阅读说明：本技术 车辆用灯具 (Vehicle lamp ) 是由 千竈启之 今关规文 南春奈 峰海乃 半谷明彦 伊藤功三郎 山本拓矢 于 2019-09-05 设计创作，主要内容包括：提供车辆用灯具,能够满足法规所要求的配光标准并且实现各种亮度和各种发光形状的发光模式(丰富多彩的发光图形)的新发光外观。该车辆用灯具的特征在于,具有：膜光源,其包含具有挠性的透明膜、以及多个半导体发光元件,该多个半导体发光元件在所述透明膜的至少表面以二维地配置的状态被固定；以及反射面,其以与所述膜光源的所述透明膜的背面相对的状态被配置,对从所述多个半导体发光元件中的一部分或全部放射并透过所述透明膜的光进行反射。(Provided is a vehicle lamp which can satisfy a light distribution standard required by a regulation and realize a new light emission appearance of light emission patterns (colorful light emission patterns) of various luminances and various light emission shapes. The vehicle lamp is characterized by comprising: a film light source including a flexible transparent film and a plurality of semiconductor light emitting elements fixed in a two-dimensional arrangement on at least a surface of the transparent film; and a reflecting surface that is disposed so as to face a rear surface of the transparent film of the film light source, and reflects light that is emitted from a part or all of the plurality of semiconductor light emitting elements and passes through the transparent film.)

1. A lamp for a vehicle, comprising:

a film light source including a flexible transparent film and a plurality of semiconductor light emitting elements fixed in a two-dimensional arrangement on at least a surface of the transparent film; and

and a reflecting surface which is disposed so as to face a rear surface of the transparent film of the film light source, and reflects light emitted from a part or all of the plurality of semiconductor light emitting elements and transmitted through the transparent film.

2. The vehicular lamp according to claim 1, wherein,

the vehicle lamp further includes a light distribution control lens that controls light emitted from a part or all of the plurality of semiconductor light emitting elements and transmitted through the transparent film,

the light distribution control lens is disposed between the film light source and the reflection surface, and the reflection surface reflects the light controlled by the light distribution control lens.

3. The vehicular lamp according to claim 2, wherein,

the light distribution control lens includes a plurality of lens portions corresponding to the plurality of semiconductor light emitting elements,

the plurality of lens portions control light emitted from the semiconductor light emitting element corresponding to the lens portion and transmitted through the transparent film.

4. The vehicular lamp according to claim 3, wherein,

the plurality of lens portions are each cut for a groove.

5. The vehicular lamp according to claim 3, wherein,

each of the plurality of lens sections is a lens section having a focal point set in the vicinity of the semiconductor light emitting element corresponding to the lens section,

the reflecting surface reflects the light controlled by each of the plurality of lens units toward a target direction.

6. The vehicular lamp according to claim 3, wherein,

the plurality of lens portions are fresnel lenses, respectively.

7. The vehicular lamp according to claim 2, wherein,

the vehicle lamp further includes a film light source support member that supports the film light source in a state where the transparent film is kept in a predetermined shape,

the film light source support member has a front lens, a rear lens, and a lens fixing member that fixes the front lens and the rear lens,

the lens fixing member fixes the front lens and the rear lens in a state where the film light source is disposed between the front lens and the rear lens.

8. The vehicular lamp according to claim 7, wherein,

the rear lens is configured as the light distribution control lens.

9. The vehicular lamp according to claim 7, wherein,

the light distribution control lens is disposed between the rear lens and the reflection surface.

10. The vehicular lamp according to claim 2, further comprising:

a film light source support member that supports the film light source in a state where the transparent film is kept in a predetermined shape; and

a plurality of said film light sources;

the plurality of film light sources are arranged in a state of overlapping in the vehicle front-rear direction in the same range when viewed from the front,

the plurality of film light sources includes at least a1 st film light source and a2 nd film light source,

the film light source support member has a front lens, a middle lens, a rear lens, and a lens fixing member that fixes the front lens, the middle lens, and the rear lens,

the lens fixing member fixes the front lens, the intermediate lens, and the rear lens in a state where the 1 st film light source is disposed between the front lens and the intermediate lens and the 2 nd film light source is disposed between the intermediate lens and the rear lens.

11. The vehicular lamp according to claim 10, wherein,

the intermediate lens and the rear lens are respectively configured as the light distribution control lens.

12. The vehicular lamp according to claim 10, wherein,

the light distribution control lenses are respectively arranged between the middle lens and the 2 nd film light source and between the rear lens and the reflecting surface.

13. The vehicular lamp according to claim 1, further comprising:

a film light source support member that supports the film light source in a state where the transparent film is kept in a predetermined shape;

a lamp unit having the film light source and the film light source support member; and

a transparent lamp unit supporting member supporting the lamp unit,

the lamp unit supporting member supports the lamp unit in a lamp chamber formed by the housing and the outer lens in a state where a space is kept between the lamp unit and the housing.

14. A lamp for a vehicle, comprising:

a film light source including a flexible transparent film and a plurality of semiconductor light emitting elements fixed in a two-dimensional arrangement on at least a surface of the transparent film;

a film light source support member that supports the film light source in a state where the transparent film is kept in a predetermined shape;

a lamp unit having the film light source and the film light source support member; and

a transparent lamp unit supporting member supporting the lamp unit,

the lamp unit supporting member supports the lamp unit in a lamp chamber formed by the housing and the outer lens in a state where a space is kept between the lamp unit and the housing.

15. The vehicular lamp according to claim 13, wherein,

the lamp unit support member is a transparent support portion having a part fixed to the lamp unit and the other part fixed to the housing.

16. The vehicular lamp according to claim 15, wherein,

the light unit is cantilevered by the transparent support.

17. The vehicular lamp according to claim 14, wherein,

the lamp unit support member is a transparent support portion having a part fixed to the lamp unit and the other part fixed to the housing.

18. The vehicular lamp according to claim 17,

the light unit is cantilevered by the transparent support.

19. The vehicular lamp according to claim 1, wherein,

the vehicular lamp has a plurality of the film light sources,

the plurality of film light sources are arranged in a state of overlapping in the vehicle front-rear direction in the same range when viewed from the front.

20. The vehicular lamp according to claim 19, wherein,

the semiconductor light emitting elements of the plurality of film light sources are arranged so as not to overlap with the semiconductor light emitting elements of the other film light sources when viewed from the front and so as to overlap with the film portions of the other film light sources.

Technical Field

The present invention relates to a vehicle lamp, and more particularly, to a vehicle lamp that can satisfy a light distribution standard required by regulations and realize a new light emission appearance of light emission patterns (patterns) of various luminances and various light emission shapes.

Background

Conventionally, a vehicle lamp having an organic EL has been proposed (for example, see patent document 1). Patent document 1 describes a vehicle lamp in which an organic EL panel functioning as a tail lamp and an organic EL panel functioning as a stop lamp are arranged in a lateral direction.

Patent document 1: japanese patent laid-open publication No. 2016-58136

Patent document 2: japanese laid-open patent publication (JP 2015-22917)

Disclosure of Invention

However, in the vehicle lamp described in patent document 1, since the organic EL panel functioning as a tail lamp and the organic EL panel functioning as a stop lamp are in a monotone light emission mode in which only light emission or no light emission is performed, there is a problem that it is difficult to realize a new light emission appearance. Further, the organic EL panel has a problem that luminance is low and it is difficult to satisfy a light distribution standard required by regulations (particularly, in the case of a stop lamp or a turn lamp requiring high luminance) (for example, see patent document 2).

The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicle lamp that can satisfy a light distribution standard required by a law and realize a new emission appearance of light emission patterns (colorful light emission patterns) of various luminances and various light emission shapes.

In order to achieve the above object, one aspect of the present invention is characterized by a lamp for a vehicle, having: a film light source including a flexible transparent film and a plurality of semiconductor light emitting elements fixed in a two-dimensional arrangement on at least a surface of the transparent film; and a reflecting surface that is disposed so as to face a rear surface of the transparent film of the film light source, and reflects light that is emitted from a part or all of the plurality of semiconductor light emitting elements and passes through the transparent film.

According to this aspect, it is possible to provide a vehicle lamp that can satisfy a light distribution standard required by a law and realize a new emission appearance of light emission patterns (colorful light emission patterns) of various luminances and various light emission shapes.

Further, according to this aspect, the light use efficiency of the light emitted rearward from the semiconductor light emitting element of the film light source is improved. That is, the reflecting surface can be caused to emit light by light emitted rearward from the semiconductor light emitting element of the film light source. Thus, a three-dimensional light-emitting appearance with a sense of depth in which the light-emitting reflection surface is visually recognized through the film light source (transparent film) can be realized.

Further, a semiconductor light emitting element having higher luminance than the organic EL is used to satisfy a light distribution standard required by a law (particularly, in the case of a stop lamp or a turn lamp which requires high luminance).

In the above-described invention, it is preferable that the vehicle lamp further includes a light distribution control lens that controls light that is emitted from a part or all of the plurality of semiconductor light emitting elements and passes through the transparent film, the light distribution control lens is disposed between the film light source and the reflection surface, and the reflection surface reflects the light controlled by the light distribution control lens.

In the above-described invention, it is preferable that the light distribution control lens includes a plurality of lens portions corresponding to the plurality of semiconductor light emitting elements, respectively, and the plurality of lens portions control light emitted from the semiconductor light emitting elements corresponding to the lens portions and transmitted through the transparent film, respectively.

In the above invention, it is preferable that each of the plurality of lens portions is cut into a groove.

In the above-described invention, it is preferable that each of the plurality of lens portions is a lens portion having a focal point set in the vicinity of the semiconductor light emitting element corresponding to the lens portion, and the reflection surface reflects light controlled by each of the plurality of lens portions in a target direction.

According to this aspect, the light use efficiency of the light emitted rearward from the semiconductor light emitting element of the film light source is improved. That is, by reflecting the light irradiated (radiated) rearward from the film light source toward the target direction by the reflection surface in addition to the light irradiated (radiated) forward from the film light source, a predetermined light distribution pattern (for example, a tail light distribution pattern or a parking light distribution pattern) can be formed.

In the above invention, it is preferable that each of the plurality of lens portions is a fresnel lens.

In the above-described vehicle lamp, it is preferable that the film light source support member further includes a front lens, a rear lens, and a lens fixing member that fixes the front lens and the rear lens, and the lens fixing member fixes the front lens and the rear lens in a state where the film light source is disposed between the front lens and the rear lens.

In the above invention, it is preferable that the rear lens is configured as the light distribution control lens.

In the above-described invention, it is preferable that the light distribution control lens is disposed between the rear lens and the reflection surface.

In the above invention, a preferable aspect is that the vehicle lamp further includes: a film light source support member that supports the film light source in a state where the transparent film is kept in a predetermined shape; a plurality of said film light sources; the film light sources are arranged in a state of overlapping in a vehicle front-rear direction in the same range when viewed from the front, the film light sources include at least a1 st film light source and a2 nd film light source, the film light source support member has a front lens, an intermediate lens, a rear lens, and a lens fixing member that fixes the front lens, the intermediate lens, and the rear lens, and the lens fixing member fixes the front lens, the intermediate lens, and the rear lens in a state where the 1 st film light source is arranged between the front lens and the intermediate lens and the 2 nd film light source is arranged between the intermediate lens and the rear lens.

In the above invention, it is preferable that the intermediate lens and the rear lens are each configured as the light distribution control lens.

In the above invention, it is preferable that the light distribution control lenses are disposed between the intermediate lens and the 2 nd film light source and between the rear lens and the reflection surface, respectively.

In the above invention, a preferable aspect is that the vehicle lamp further includes: a film light source support member that supports the film light source in a state where the transparent film is kept in a predetermined shape; a lamp unit having the film light source and the film light source support member; and a transparent lamp unit supporting member that supports the lamp unit, the lamp unit supporting member supporting the lamp unit in a lamp chamber configured by a housing and an outer lens in a state where a space is maintained between the lamp unit and the housing.

According to this aspect, the lamp unit is fixed in the lamp chamber with a space between the lamp unit and the housing, and the lamp unit support member is transparent and is difficult to be visually recognized, so that a light-emitting appearance can be realized as if the lamp unit were floating in the lamp chamber.

In addition, in the above invention, a preferable aspect is a vehicle lamp including: a film light source including a flexible transparent film and a plurality of semiconductor light emitting elements fixed in a two-dimensional arrangement on at least a surface of the transparent film; a film light source support member that supports the film light source in a state where the transparent film is kept in a predetermined shape; a lamp unit having the film light source and the film light source support member; and a transparent lamp unit supporting member that supports the lamp unit, the lamp unit supporting member supporting the lamp unit in a lamp chamber configured by a housing and an outer lens in a state where a space is maintained between the lamp unit and the housing.

According to this aspect, the lamp unit is fixed in the lamp chamber with a space between the lamp unit and the housing, and the lamp unit support member is transparent and is difficult to be visually recognized, so that a light-emitting appearance can be realized as if the lamp unit were floating in the lamp chamber.

In the above invention, it is preferable that the lamp unit support member is a transparent support portion having a part fixed to the lamp unit and another part fixed to the housing.

In the above invention, it is preferable that the lamp unit is supported by the transparent support portion in a cantilever manner.

Drawings

Fig. 1 is a front view of a vehicle lamp 10.

Fig. 2 (a) is a sectional view a-a of fig. 1, and (B) is a sectional view B-B of fig. 1.

Fig. 3 is an exploded perspective view of the lamp unit 20.

Fig. 4 (a) shows an example of the 1 st film light source 22A (front view), and (B) shows an example of the 2 nd film light source 22B (front view).

Fig. 5 is a partially enlarged view of the wiring pattern 22c around the semiconductor light emitting element 22 b.

Fig. 6 (a) shows an example of flip chip mounting, (b) shows an example of face-up mounting, and (c) shows another example of face-up mounting.

FIG. 7 is a perspective view of the flange portions 24a 2-24 c2 in a superposed state.

Fig. 8 is a view (front view) showing a1 st film light source 22A and a2 nd film light source 22B arranged behind the 1 st film light source 22A.

Fig. 9 is a perspective view of the housing 52.

Fig. 10 shows an example of a lamp unit configured by using 4 film light sources.

Fig. 11 shows an example of the light emission pattern of the semiconductor light emitting element of the film light source.

Fig. 12 shows an example in which a light guide plate 28 for guiding light from the semiconductor light emitting element 26 and emitting the light from the front surface is disposed between the front lens 24a and the 1 st film light source 22A.

Fig. 13 is a schematic view (longitudinal sectional view) of a vehicle lamp 10A of embodiment 2.

Fig. 14 is a schematic view (perspective view) of a vehicle lamp 10A of embodiment 2.

Fig. 15 is an example (schematic view) of the vehicle lamp 10 Al.

Fig. 16 is another example (schematic view) of the vehicular lamp 10 Al.

Fig. 17 is an example (schematic view) of the vehicular lamp 10a 2.

Fig. 18 is another example (schematic view) of the vehicular lamp 10a 2.

Fig. 19 is a schematic view (cross-sectional view) of a vehicle lamp 10B of embodiment 3.

Fig. 20 is a schematic view (cross-sectional view) of a modification of the vehicle lamp 10B of embodiment 3.

Description of the reference symbols

10: a vehicular lamp; 20. 20A: a lamp unit; 22: a semiconductor light emitting element; 22A: 1 st film light source; 22B: a2 nd film light source; 22 a: a film; 22a 1: a membrane portion; 22 b: a semiconductor light emitting element; 22b 1: an electrode pad; 22 c: a wiring pattern; 22c 1: a vertical wiring pattern; 22c 2: transversely wiring the pattern; 24: a film light source support member; 24 a: a front lens; 24a 1: a lens body; 24a 2: a flange portion; 24a 3: a frame portion; 24 b: a middle lens; 24b 1: a lens body; 24b 2: a flange portion; 24 c: a rear lens; 24c 1: a lens body; 24c 2: a flange portion; 24 d: a lens fixing member; 40: a reflective surface; 50: an outer lens; 52: a housing; 52 a: a groove portion (lamp unit support member); 54: a lamp chamber; 56: an extension portion.

Detailed Description

Hereinafter, a vehicle lamp 10 according to embodiment 1 of the present invention will be described with reference to the drawings. In each drawing, the same reference numerals are given to corresponding components, and redundant description is omitted.

Fig. 1 is a front view of a vehicle lamp 10.

The vehicle lamp 10 shown in fig. 1 is a signal lamp for a vehicle that functions as a tail lamp and a stop lamp, for example. The vehicle lamp 10 is mounted on each of the left and right sides of the rear end portion of a vehicle such as an automobile. Since the vehicle lamps 10 mounted on both the left and right sides have a bilaterally symmetrical structure, the vehicle lamp 10 mounted on the left side (the left side toward the front of the vehicle) of the rear end portion of the vehicle will be representatively described below. Hereinafter, for convenience of explanation, "front" is used as meaning behind the vehicle, and "rear" is used as meaning ahead of the vehicle.

Fig. 2 (a) is a sectional view taken along line a-a of fig. 1, and fig. 2 (B) is a sectional view taken along line B-B of fig. 1.

As shown in fig. 2, the vehicle lamp 10 of the present embodiment includes a lamp unit 20, a reflecting surface 40, and the like. The lamp unit 20 is disposed in a lamp chamber 54 formed by the outer lens 50 and the housing 52, and is attached to the housing 52.

Fig. 3 is an exploded perspective view of the lamp unit 20.

As shown in fig. 3, the lamp unit 20 includes tail lamp film light sources 22A (4 film light sources 22A are exemplified in fig. 3, hereinafter referred to as 1 st film light source 22A), parking lamp film light sources 22B (4 film light sources 22B are exemplified in fig. 3, hereinafter referred to as 2 nd film light sources 22B), and film light source support members 24(24a to 24 c). Hereinafter, the film light source 22 is referred to as "film light source 22" unless the 1 st film light source 22A and the 2 nd film light source 22B are distinguished from each other.

First, a film light source will be explained.

Fig. 4 (a) is an example of the 1 st film light source 22A (front view), and fig. 4 (B) is an example of the 2 nd film light source 22B (front view).

As shown in fig. 4 (a), the 1 st film light source 22A includes a film 22A and a plurality of semiconductor light emitting elements 22 b. The 2 nd film light source 22B is the same as the 1 st film light source 22A except that the number of the semiconductor light emitting elements 22B is different, and therefore, the 1 st film light source 22A will be representatively described below. The density of the semiconductor light emitting elements 22B disposed in both the 1 st film light source 22A and the 2 nd film light source 22B is changed within the film surface. The arrangement is dense near the ends and sparse near the center. The number of semiconductor light emitting elements 22B of the 1 st film light source 22A may be the same as the number of semiconductor light emitting elements 22B of the 2 nd film light source 22B. The arrangement of the semiconductor light emitting elements 22B of the 1 st film light source 22A may be different from and the same as the arrangement of the semiconductor light emitting elements 22B of the 2 nd film light source 22B.

The plurality of semiconductor light emitting elements 22b are fixed (mounted) on the film 22a by connecting each electrode pad to a wiring pattern 22c formed on the film 22a, for example, by bump (bump). This point will be described later.

The film 22a is a flexible transparent film having a front surface and a back surface opposite to the front surface. In addition, the film 22a may be colorless and transparent, may be colored and transparent, and may be opaque. In the present embodiment, since the 1 st and 2 nd film light sources 22A and 22B are arranged in a superimposed state, a transparent film is used as the film 22A in the 1 st film light source 22A in front so that the light Ray1 from the semiconductor light emitting element 22B of the 2 nd film light source 22B in rear is transmitted therethrough. In the 2 nd film light source 22B, the transparent film 22a is also used as the film 22a so that the light Ray2 from the semiconductor light emitting element 22B of the 2 nd film light source 22B is transmitted and directed to the reflecting surface 40 in the rear direction. The thickness of the film 22a is, for example, about 100 μm or less. The outer shape of the film 22a is, for example, rectangular. Examples of the material of the film 22a include polyesters such as polyimide, polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), cellulose nanofibers, and polyamideimide.

The film 22a has a wiring pattern 22c (22c1, 22c2) formed thereon. The wiring pattern 22c is made of metal such as silver, copper, or gold. The wiring pattern 22c may be a transparent wiring pattern such as ITO (Indium Tin Oxide).

The wiring pattern 22 includes: a plurality of vertical wiring patterns 22c1 extending in the vertical direction and in parallel; and a plurality of cross wiring patterns 22c2 extending in the cross direction and in parallel. The vertical wiring pattern 22c1 and the horizontal wiring pattern 22c2 are arranged so as to cross each other to form a lattice pattern. Various patterns having design properties (for example, a pattern including straight lines and curved lines) other than the lattice pattern may be used as the wiring pattern 22 c.

The vertical wiring pattern 22c1 is a wiring pattern for supplying a driving current to the semiconductor light emitting element 22 b.

Fig. 5 is a partially enlarged view of the wiring pattern 22c around the semiconductor light emitting element 22 b.

As shown in fig. 5, the horizontal wiring pattern 22c2 is an interrupted wiring pattern in which the vicinity of the vertical wiring pattern 22c1 is interrupted. The horizontal wiring pattern 22c2 is a wiring pattern (so-called dummy wiring pattern) for visually recognizing the entire vertical wiring pattern 22c1 and the horizontal wiring pattern 22c2 as a lattice pattern, and is not a wiring pattern for supplying a driving current to the semiconductor light emitting element 22 b. The vertical wiring pattern 22c1 and the horizontal wiring pattern 22c2 also function to radiate heat generated in the semiconductor light-emitting element 22b supplied with a drive current.

The wiring pattern 22c can be formed as follows.

First, a solution in which conductive particles (for example, conductive nanoparticles) and an insulating material are dispersed or a solution in which conductive particles coated with an insulating material layer are dispersed is applied to the surface of the film 22a, thereby forming a film of conductive particles coated with an insulating material.

Next, the film formed above is irradiated with laser light to be sintered. In this case, the silver wiring pattern 22c can be formed by using Ag as the conductive particles (see, for example, japanese patent application laid-open No. 2018-4995).

The wiring pattern 22c can be formed by forming a metal film of copper or the like on one surface of the film 22a and subjecting the metal film to known etching, for example.

A plurality of semiconductor light emitting elements 22b are mounted on the film 22 a. In addition, electronic components (e.g., resistors) other than the semiconductor light-emitting elements 22b may be mounted on the film 22 a.

The semiconductor light emitting element 22b is a semiconductor light emitting element having a red emission color (in the case of constituting a tail lamp or a stop lamp). Further, the semiconductor light emitting element 22b may be a semiconductor light emitting element having an amber light emission color (in the case of constituting a turn signal lamp), or may be a semiconductor light emitting element having a white light emission color (in the case of constituting a rear lamp).

The semiconductor light emitting element 22b is constituted only by an LED chip (LED element). In addition, the semiconductor light emitting element 22b may be configured by combining an LED chip with a wavelength conversion material such as a phosphor or a quantum dot, or the semiconductor light emitting element 22b may be configured by combining a plurality of LED chips.

The size of the semiconductor light emitting element 22b is, for example, about 300 μm square. The semiconductor light emitting element 22b has a square outer shape, for example. In addition, the outer shape of the semiconductor light emitting element 22b may be rectangular, triangular, or other shapes.

Although not shown, the semiconductor light emitting element 22b includes a substrate, an n-type semiconductor layer, a light emitting layer, a p-type semiconductor layer, an n-side electrode pad (pad), a p-side electrode pad, and the like. The substrate may be transparent or opaque to light emitted from the light-emitting layer, but the substrate of the semiconductor light-emitting element 22b flip-chip mounted is preferably transparent. The substrate of the semiconductor light emitting element 22b mounted to face upward is preferably opaque, but may be transparent. The n-type semiconductor layer, the light-emitting layer, and the p-type semiconductor layer are stacked on the substrate. Hereinafter, the n-type electrode pad and the p-type electrode pad are referred to as electrode pads 22b 1.

The semiconductor light emitting elements 22b are fixed in a state of being two-dimensionally arranged on at least the surface of the film 22a (flip chip mounting). For example, in fig. 4 (a), the semiconductor light emitting element 22b of the 1 st film light source 22A is fixed to a portion where a black dot is drawn in a portion where the vertical wiring pattern 22c1 and the horizontal wiring pattern 22c2 intersect. On the other hand, for example, in fig. 4 (b), the semiconductor light emitting element 22b of the 2 nd film light source 22 is fixed to a portion where a black dot is drawn in a portion where the vertical wiring pattern 22c1 and the horizontal wiring pattern 22c2 intersect.

The semiconductor light emitting elements 22b are two-dimensionally arranged, for example, 50cm in front view, in consideration of the area condition required for the stop lamp²On the rectangular area a (see the area surrounded by the dashed-dotted line in fig. 4 (a) and 4 (b)).

The arrangement interval of the semiconductor light emitting elements 22b (i.e., the interval between the vertical wiring patterns 22c1 and the interval between the horizontal wiring patterns 22c2) is, for example, 3 mm. The semiconductor light emitting elements 22b are not limited to being arranged in the portions where the vertical wiring patterns 22c1 and the horizontal wiring patterns 22c2 intersect, and may be arranged in various other positions in consideration of design.

Fig. 6 (a) shows an example of flip chip mounting.

As shown in fig. 6 a, the semiconductor light-emitting element 22b is mounted on the film 22a in a state where a surface on the side where the electrode pad 22b1 is provided (hereinafter, referred to as an electrode surface) faces the surface of the film 22a (flip chip mounting). Specifically, the semiconductor light emitting element 22b is fixed to the film 22a by, for example, pit-connecting the electrode pad 22b1 to the wiring pattern 22c (vertical wiring pattern 22c1) formed on the film 22 a. Although not shown, the semiconductor light emitting element 22b fixed to the film 22a may be sealed with a resin or covered with a cover member.

Fig. 6 (b) shows an example of face-up mounting.

As shown in fig. 6 (b), the semiconductor light-emitting element 22b is mounted on the film 22a in a state where the surface opposite to the electrode surface faces the surface of the film 22a (face-up mounting). In this case, the semiconductor light emitting element 22b is fixed to the film 22a (or the wiring pattern) by an adhesive such as silver paste or resin. The electrode pad 22b1 and the wiring pattern 22c (vertical wiring pattern 22c1) are electrically connected by a metal wire W (double wire).

Fig. 6 (c) shows another example of the face-up mounting.

As shown in fig. 6 c, the semiconductor light-emitting element 22 may be formed using an element in which the electrode pads 22b1 are disposed as the semiconductor light-emitting element 22, and the larger one of the electrode pads 22b1 that face each other may be mounted on the film 22a in a state where it faces the surface of the film 22a (face-up mounting). In this case, the semiconductor light emitting element 22 is fixed to the wiring pattern (vertical wiring pattern 22c1) by a conductive adhesive such as silver paste. The smaller electrode pad 22b2 and the wiring pattern 22c (vertical wiring pattern 22c1) are electrically connected by a metal wire W (single wire).

The semiconductor light emitting element 22b emits light when a drive current is supplied thereto via the wiring pattern 22c (vertical wiring pattern 22c 1). As shown in fig. 6 (a), the light emitted from the semiconductor light-emitting element 22b includes light Ray1 emitted from the surface opposite to the electrode surface and light Ray2 emitted from the electrode surface.

The ratio of the light Ray1 radiated from the surface opposite to the electrode surface to the light Ray2 radiated from the electrode surface differs depending on the structure of the semiconductor light emitting element 22b, but is, for example, 7: 3. the thickness of the arrow in fig. 6 (a) indicates this.

As shown in fig. 6 (b) and 6 (c), when the semiconductor light emitting element 22b is mounted face up, the film light source emits light from only one face. In this case, by using silver for the vertical wiring pattern 22c1 or using a reflective silver paste for the adhesive, light directed from the semiconductor light emitting element 22b toward the film 22a is reflected and emitted from the surface on the opposite side of the film 22 a.

As shown in fig. 6 (b), even when the semiconductor light emitting element 22b is mounted face-up, a film light source that emits light from both one surface and the surface opposite to the one surface can be configured as shown in fig. 6 (a) by using, for example, a transparent substrate as the substrate of the semiconductor light emitting element 22b and using a transparent adhesive as the adhesive for adhering the semiconductor light emitting element 22b and the film 22a (or the vertical wiring pattern 22c1 in the case where the vertical wiring pattern 22c1 is a transparent electrode).

Next, the film light source support member 24 will be described.

The film light source support member 24 supports the 1 st and 2 nd film light sources 22A, 22B in a state where the film 22A maintains a certain shape (for example, a planar shape or a curved shape). As shown in fig. 3, the film light source support member 24 has a front lens 24a, a middle lens 24b, a rear lens 24c, and a lens fixing member 24d (e.g., a screw). In fig. 3, the lens fixing member 24d is omitted. The material of each of the lenses 24a to 24c is a transparent resin such as acrylic or polycarbonate.

The film light source support member 24 supports the 1 st and 2 nd film light sources 22A, 22B in a state where the film 22A maintains a certain shape (for example, a planar shape or a curved shape). As shown in fig. 3, the film light source support member 24 has a front lens 24a, a middle lens 24b, a rear lens 24c, and a lens fixing member 24d (e.g., a screw). In fig. 3, the lens fixing member 24d is described in a state before assembly (fixing). The material of each of the lenses 24a to 24c is a transparent resin such as acrylic or polycarbonate.

As shown in fig. 3, the intermediate lens 24b includes a lens body 24b1 and a flange portion 24b 2. The lens body 24b1 is a lens in which a transparent plate is bent into a shape in which a longitudinal section thereof is convex forward (see fig. 2 (a)) and a cross section thereof is a straight line (see fig. 2 (b)). The 1 st film light source 22A is positioned with respect to the intermediate lens 24b, and as shown in fig. 3, the 1 st film light source 22A is fixed to the intermediate lens 24b in a state where the back surface of the 1 st film light source 22A faces the front surface of the intermediate lens 24b (for example, in a state of being bonded with a double-sided tape or being substantially in close contact therewith). Thereby, the film light source 22A is supported in a state of being curved along the intermediate lens 24 b. In addition, the 1 st film light source 22A may be sandwiched between the front lens 24a and the intermediate lens 24 b.

Like the intermediate lens 24b, the rear lens 24c includes a lens main body 24c1 and a flange portion 24c 2. The lens main body 24c1 is a lens in which a transparent plate is bent into a shape in which a longitudinal section thereof is convex forward (see fig. 2b) and a cross section thereof is a straight line (see fig. 2 b). The 2 nd film light source 22B is positioned with respect to the rear lens 24c, and as shown in fig. 3, the 2 nd film light source 22B is fixed to the rear lens 24c in a state where the back surface of the 2 nd film light source 22B faces the front surface of the rear lens 24c (for example, in a state of being bonded with a double-sided tape or being substantially in close contact therewith). Thereby, the 2 nd film light source 22B is supported in a state of being curved along the rear lens 24 c. In addition, the 1 st film light source 22A may be sandwiched between the front lens 24a and the intermediate lens 24 b.

The front lens 24a includes a lens body 24a1, a flange portion 24a2, and a frame portion 24a3 surrounding the lens body 24a 1. The lens body 24a1 is a lens in which a transparent plate is bent into a shape in which a longitudinal section thereof is convex forward (see fig. 2 (a)) and a cross section thereof is a straight line (see fig. 2 (b)). The frame portion 24a3 may be decorated with aluminum deposition or the like, or may be a transparent plate without decoration. By using a transparent member as the lenses 24a, 24B, 24c and the film 22A of the 1 st and 2 nd film light sources 22A, 22B, it is not easy to recognize the presence of the light source (for example, the semiconductor light emitting element 22B) when the light source does not emit light.

The lens fixing member 24d is a member for fixing the lens 24a, the intermediate lens 24b, and the rear lens 24c in a state of being positioned with respect to each other, and is, for example, a screw.

The front lens 24a, the intermediate lens 24B, and the rear lens 24c are fastened by screwing screws (not shown) as lens fixing members 24d inserted into screw holes N1 formed in the rear lens 24c (flange portion 24c2) and screw holes N2 formed in the intermediate lens 24B (flange portion 24B2) to the front lens 24a (flange portion 24a2) in a state where, for example, the front surface of the 1 st film light source 22A (semiconductor light emitting element 22B) faces the rear surface of the front lens 24a with a space S1 (see (a) of fig. 2) therebetween, and the front surface of the 2 nd film light source 22B (semiconductor light emitting element 22B) faces the rear surface of the intermediate lens 24B with a space S2 (see (a) therebetween, and the flange portions 24a2 to 24c2 of the lenses 24a to 24c are overlapped with each other as shown in fig. 7, so that the front lens 24a, the intermediate lens 24b, and the rear lens 24c are fixed in a state of being positioned with respect to each other. FIG. 7 is a perspective view of the flange portions 24a 2-24 c2 in a superposed state. The positions where the lenses 24a to 24c are screwed and fastened are not limited to 2 positions. For example, as shown by 6 arrows in fig. 3, there may be 6 positions.

Fig. 8 is a view (front view) showing a1 st film light source 22A and a2 nd film light source 22B arranged behind the 1 st film light source 22A. In fig. 8, reference numeral 22Ab denotes the semiconductor light emitting element 22B of the 1 st film light source 22A, and reference numeral 22Bb denotes the semiconductor light emitting element 22B of the 2 nd film light source 22B.

As described above, in the state where the lenses 24a to 24c are screwed and fastened, as shown in fig. 2, the 1 st and 2 nd film light sources 22A and 22B are arranged in a state of overlapping in the vehicle front-rear direction (i.e., in series in the vehicle front-rear direction) within the same range (see ranges indicated by reference numerals L1 and L2 in fig. 2) in front view. The same range is the range of area conditions meeting the legislative requirements, for example 50cm in the case of stop lights²。

In this way, the 1 st and 2 nd film light sources 22A and 22B are arranged in a state of overlapping in the vehicle front-rear direction in the same range in front view, which is advantageous as follows.

For example, in the above-described conventional technology (see patent document 1), the organic EL panel functioning as a tail lamp and the organic EL panel functioning as a stop lamp are arranged in parallel (laterally aligned) in front view, and therefore the size of the vehicle lamp in front view is increased.

In contrast, in the present embodiment, the 1 st and 2 nd film light sources 22A and 22B are arranged in a state of overlapping in the vehicle front-rear direction in the same range in front view (i.e., in series in the vehicle front-rear direction), and therefore, the size of the vehicle lamp in front view can be reduced compared to the above-described conventional art.

In the state where the lenses 24a to 24c are screwed and fastened and fixed as described above, as shown in fig. 8, the semiconductor light emitting elements 22B (e.g., 22Bb) of the 1 st and 2 nd film light sources 22A and 22B are arranged in a state where they do not overlap with the semiconductor light emitting elements 22B (e.g., 22Ab) and the wiring patterns 22c of the other film light sources and overlap with the film portions 22A1 of the other film light sources when viewed from the front. The semiconductor light emitting element 22b of one film light source is disposed at a position surrounded by the semiconductor light emitting element 22b of the other film light source in a front view. That is, the semiconductor light emitting element 22Ab (22Bb) is disposed at a position surrounded by the semiconductor light emitting element 22Bb (22Ab) in front view.

Thus, the light Ray1 emitted forward from the semiconductor light emitting elements 22B (22Bb) of the 2 nd film light source 22B disposed rearward is not blocked (or hardly blocked) by the semiconductor light emitting elements 22B (22Ab) of the 1 st film light source 22A disposed forward and the wiring pattern 22c, but is irradiated forward through the film portions 22A1 between the semiconductor light emitting elements 22B (22Ab) of the 1 st film light source 22A disposed forward. This improves the light use efficiency of the light Ray1 emitted forward from the semiconductor light emitting element 22B (22Bb) of the 2 nd film light source 22B disposed rearward.

On the other hand, the light Ray2 emitted rearward from the semiconductor light emitting element 22B (22Ab) of the 1 st film light source 22A disposed forward is not blocked (or hardly blocked) by the semiconductor light emitting element 22B (22Bb) of the 2 nd film light source 22B disposed rearward and the wiring pattern 22c, but is irradiated rearward through the film portion between the semiconductor light emitting elements 22B (22Bb) of the 2 nd film light source 22B disposed rearward. This improves the light use efficiency of the light Ray2 emitted rearward from the semiconductor light emitting element 22b (22Ab) of the 1 st film light source 22A disposed forward.

Fig. 9 is a perspective view of the housing 52.

The lamp unit 20 configured as described above is fixed in a state of being positioned on the housing 52. Specifically, the lamp unit 20 is fixed in a state of being positioned on the housing 52 by fitting the flange portions 24a2 to 24c2 (see fig. 7) overlapped as described above into the groove portion 52a (see fig. 9) formed in the housing 52 (see fig. 2 b). Each of the flange portions 24a 2-24 c2 corresponds to a lamp unit supporting member.

Thus, the lamp unit 20 is disposed in the lamp chamber 54 in a state of maintaining a space with the housing 52 (see fig. 2 (a) and 2 (b)). The groove portions 52a fitted to the respective flange portions 24a 2-24 c2 are covered with the extending portions 56 (see fig. 9).

As shown in fig. 2, a reflecting surface 40 is disposed behind the lamp unit 20. The reflection surface 40 can be formed by texturing the front surface of the case 52, and depositing aluminum on the front surface (textured surface) of the case 52 subjected to the texturing, for example.

The reflecting surface 40 is disposed so as to face the rear surface of the film 22a of the 2 nd film light source 22B, and reflects the light Ray2 emitted from part or all of the plurality of semiconductor light emitting elements 22B and transmitted through the film 22 a. Specifically, the reflecting surface 40 reflects the light Ray2 radiated backward from the electrode surface of the semiconductor light emitting element 22B (22Ba) of the 1 st film light source 22A and transmitted through the film portion of the 2 nd film light source 22B, and the light Ray2 radiated backward from the electrode surface of the semiconductor light emitting element 22B (22Bb) of the 2 nd film light source 22B. The reflecting surface 40 may be omitted.

Next, the light emission pattern of the 1 st and 2 nd film light sources 22A and 22B (semiconductor light emitting elements 22B) will be described. The 1 st and 2 nd film light sources 22A and 22B are connected to a control device 58 (see fig. 2B) for controlling the light emission state (lighting state) of each semiconductor light emitting element 22B.

First, an example of the light emission mode in the case where the vehicle lamp 10 functions as a tail lamp will be described.

When the vehicle lamp 10 is to function as a tail lamp, part or all of the semiconductor light emitting elements 22B of the 1 st film light source 22A and the 2 nd film light source 22B are caused to emit light in the 1 st light emission mode.

The 1 st light emission pattern is, for example, a pattern in which all the semiconductor light emitting elements 22B of the 1 st film light source 22A (see a portion drawn with black dots in fig. 4a) and all the semiconductor light emitting elements 22B of the 2 nd film light source 22B (see a portion drawn with black dots in fig. 4B) emit light at the 1 st luminance. In addition, the 1 st light emission mode is not limited thereto. For example, as the 1 st light emission mode, a light emission mode in which a part of the semiconductor light emitting elements 22b are turned on in a state of being turned off or dimmed may be used. As the 1 st light emission pattern, a light emission pattern that changes in Gradation (Gradation) may be used. As the 1 st light emission mode, a light emission mode in which the luminance of the individual semiconductor light emitting elements 22b is changed may be used. This can express a sense of distance (sense of depth).

The 1 st light emission pattern is not limited to the static light emission pattern, and may be a dynamic light emission pattern in which the luminance, the light emission shape, the light emission position, and the like change with time.

As described above, when the semiconductor light emitting elements 22B of the 1 st film light source 22A and the 2 nd film light source 22B emit light in the 1 st light emission mode, the light distribution mode for the tail lamp is formed by the light Ray1 emitted forward from the semiconductor light emitting element 22B (22Ab) of the 1 st film light source 22A disposed in front and the light Ray1 emitted forward from the semiconductor light emitting element 22B (22Bb) of the 2 nd film light source 22B disposed in rear and emitted forward through the film portion 22A1 of the 1 st film light source 22A disposed in front.

Further, the light Ray2 radiated rearward from the semiconductor light emitting element 22B (22Bb) of the 2 nd film light source 22B arranged rearward and the light Ray2 radiated rearward from the semiconductor light emitting element 22B (22Ab) of the 1 st film light source 22A arranged forward through the film 22A and through the film portion of the 2 nd film light source 22B arranged rearward are reflected by the reflecting surface 40, whereby the reflecting surface 40 emits light.

As described above, when the vehicle lamp 10 functions as a tail lamp, the 1 st film light source 22A, the 2 nd film light source 22B, and the reflection surface 40 emit light, respectively, and the 2 nd film light source 22B and the reflection surface 40 that emit light behind the light are visually recognized through the 1 st film light source 22A. Thus, a three-dimensional light-emitting appearance with a sense of depth can be realized.

Further, as described above, the film light source support members 24(24a to 24c) support the 1 st and 2 nd film light sources 22A, 22B while maintaining a certain shape (for example, a curved shape). Thus, the semiconductor light emitting elements 22B of the 1 st and 2 nd film light sources 22A and 22B are arranged three-dimensionally. Thus, a stereoscopic light-emitting appearance with a sense of depth can be realized.

Further, since the lamp unit 20 is disposed in the lamp chamber 54 in a state of keeping a space with the housing 52, a light-emitting appearance as if the lamp unit 20 floats in the lamp chamber 54 can be visually recognized.

Next, an example of a light emission mode in a case where the vehicle lamp 10 functions as a stop lamp will be described.

When the vehicle lamp 10 is to function as a stop lamp, part or all of the semiconductor light emitting elements 22B of the 1 st film light source 22A and the 2 nd film light source 22B are caused to emit light in the 2 nd light emission mode different from the 1 st light emission mode.

The 2 nd emission mode is, for example, a mode in which all the semiconductor light emitting elements 22B of the 1 st film light source 22A (see a portion drawn with black dots in fig. 4a) and all the semiconductor light emitting elements 22B of the 2 nd film light source 22B (see a portion drawn with black dots in fig. 4B) emit light at the 2 nd luminance (the 2 nd luminance > the 1 st luminance). In addition, the 2 nd light emission mode is not limited thereto. For example, as the 2 nd light emission mode, a light emission mode in which a part of the semiconductor light emitting elements 22b are turned on in a state of being turned off or dimmed may be used. As the 2 nd light emission pattern, a light emission pattern that changes in Gradation (Gradation) may be used. As the 2 nd light emission mode, a light emission mode in which the luminance of the individual semiconductor light emitting elements 22b is changed may be used. This can express a sense of distance (sense of depth).

The 2 nd light emission mode is not limited to the static light emission mode, and may be a dynamic light emission mode in which the luminance, the light emission shape, the light emission position, and the like change with time.

As described above, when the semiconductor light emitting elements 22B of the 1 st film light source 22A and the 2 nd film light source 22B emit light in the 2 nd light emission mode, the parking lamp light distribution mode is formed by the light Ray1 emitted forward from the semiconductor light emitting element 22B (22Ab) of the 1 st film light source 22A disposed in front and the light Ray1 emitted forward from the semiconductor light emitting element 22B (22Bb) of the 2 nd film light source 22B disposed in rear and emitted forward through the film portion 22A1 of the 1 st film light source 22A disposed in front.

Further, light Ray2 radiated rearward from the semiconductor light emitting element 22B (22Bb) of the 2 nd film light source 22B arranged rearward and light Ray2 radiated rearward from the semiconductor light emitting element 22B (22Ab) of the 1 st film light source 22A arranged forward, transmitted through the film 22A, and transmitted through the film portion of the 2 nd film light source 22B arranged rearward are reflected by the reflecting surface 40, whereby the reflecting surface 40 emits light.

As described above, when the vehicle lamp 10 functions as a stop lamp, the 1 st film light source 22A, the 2 nd film light source 22B, and the reflection surface 40 emit light, respectively, and the 2 nd film light source 22B and the reflection surface 40 that emit light behind them are visually recognized through the 1 st film light source 22A. Thus, a three-dimensional light-emitting appearance with a sense of depth can be realized.

Further, as described above, the film light source support members 24(24a to 24c) support the 1 st and 2 nd film light sources 22A, 22B in a state of maintaining a certain shape (for example, a curved shape). Thus, the semiconductor light emitting elements 22B of the 1 st and 2 nd film light sources 22A and 22B are arranged three-dimensionally. Thus, a stereoscopic light-emitting appearance with a sense of depth can be realized.

Further, since the lamp unit 20 is disposed in the lamp chamber 54 in a state of keeping a space with the housing 52, a light-emitting appearance as if the lamp unit 20 floats in the lamp chamber 54 can be visually recognized.

As described above, according to the vehicle lamp 10 of the present embodiment, it is possible to provide a vehicle lamp that can satisfy the light distribution standard required by the regulations and realize a new emission appearance of light emission patterns (colorful light emission patterns) of various luminances and various light emission shapes.

This is because, since the 1 st and 2 nd film light sources 22A and 22B are provided, and the 1 st and 2 nd film light sources 22A and 22B include a plurality of semiconductor light emitting elements fixed in a state of being two-dimensionally (display type) arranged on at least the surface of the film 22A, by individually turning on or off the plurality of semiconductor light emitting elements 22B, light emission patterns (colorful light emission patterns) of various luminances and various light emission shapes can be realized.

Further, according to the present embodiment, the light use efficiency of the light Ray2 emitted rearward from the semiconductor light emitting elements 22B of the 1 st and 2 nd film light sources 22A and 22B is improved. That is, the reflecting surface 40 can be caused to emit light by the light Ray2 emitted rearward from the semiconductor light emitting elements 22B of the 1 st and 2 nd film light sources 22A and 22B. This makes it possible to realize a three-dimensional light emission appearance with a sense of depth in which the light-emitting reflection surface 40 is visually recognized through the 1 st and 2 nd film light sources 22A and 22B (film 22A).

The semiconductor light emitting element 22b having a higher luminance than the organic EL is used to satisfy the light distribution standard required by the law (particularly, in the case of a stop lamp or a turn lamp which requires a high luminance).

Further, according to the present embodiment, it is possible to provide a vehicle lamp having a completely different light emission appearance (light emission pattern) and high merchantability when functioning as a tail lamp and when functioning as a stop lamp.

This is based on the fact that the 1 st film light source 22A and the 2 nd film light source 22B are arranged in a state of overlapping in the vehicle front-rear direction in the same range when viewed from the front.

Further, according to the present embodiment, since the flexible 1 st and 2 nd film light sources 22A and 22B fixed in a state where the plurality of semiconductor light emitting elements 22B are two-dimensionally arranged are used, it is possible to arrange all of the plurality of semiconductor light emitting elements 22B at a predetermined position in a two-dimensional or three-dimensional manner in a predetermined posture only by supporting the 1 st and 2 nd film light sources 22A and 22B in a state where the film 22A maintains a certain shape (for example, a curved shape) by the film light source supporting members 24(24a to 24c) as compared with a case where the plurality of semiconductor light emitting elements 22B are arranged at a predetermined position in a predetermined posture individually.

Further, according to the present embodiment, since the back surface of the 1 st film light source 22A is in surface contact with the surface of the intermediate lens 24B and the back surface of the 2 nd film light source 22B is in surface contact with the surface of the rear lens 24c, the shapes of the 1 st film light source 22A and the 2 nd film light source 22A (films) can be maintained to be a certain shape (for example, a curved shape).

In the above-described conventional technology (see patent document 1), the organic EL panel functioning as a tail lamp and the organic EL panel functioning as a stop lamp are arranged in parallel (laterally aligned) in front view, and therefore the size of the vehicle lamp in front view is increased.

In contrast, according to the present embodiment, since the 1 st and 2 nd film light sources 22A and 22B are arranged in a state of overlapping in the vehicle front-rear direction within the same range in front view (i.e., in series in the vehicle front-rear direction), the size of the vehicle lamp 10 in front view can be reduced compared to the above-described conventional art.

Further, according to the present embodiment, a thin and lightweight lamp unit can be configured in which the front lens 24a, the intermediate lens 24B, and the rear lens 24c are fixed in a state in which the 1 st and 2 nd film light sources 22A and 22B are disposed between the front lens 24a and the intermediate lens 24B, and between the intermediate lens 24B and the rear lens 24c, respectively.

Further, according to the present embodiment, since the back surface of the 1 st film light source 22A is in surface contact with the front surface of the intermediate lens 24B and the back surface of the 2 nd film light source 22B is in surface contact with the front surface of the rear lens 24c, the shapes of the 1 st film light source 22A and the 2 nd film light source 22B (films) can be maintained to be a constant shape (for example, a curved shape).

Further, according to the present embodiment, since the front surface of the 1 st film light source 22A faces the rear surface of the front lens 24a via the space S1, and the front surface of the 2 nd film light source 22B faces the rear surface of the intermediate lens 24B via the space S2, it is possible to suppress damage caused by contact or the like between the front surface of the 1 st film light source 22A and the front surface of the 2 nd film light source 22B (the plurality of semiconductor light emitting elements 22B mounted on the front surfaces) and the rear surface of the front lens 24a and the rear surface of the intermediate lens 24B.

Further, according to the present embodiment, since the emission color of the semiconductor light emitting element 22B of the 1 st film light source 22A is the same as the emission color of the semiconductor light emitting element 22B of the 2 nd film light source 22B, it is possible to realize a vehicle lamp, for example, a tail lamp (red) and a stop lamp (red), which are the same color and multifunctional, with 1 lamp unit 20.

In addition, according to the present embodiment, the 1 st light distribution pattern (for example, the tail lamp light distribution pattern) can be formed by causing part or all of the plurality of semiconductor light emitting elements 22B of the 1 st film light source 22A and the 2 nd film light source 22B to emit light in the 1 st light emission pattern. Further, by causing part or all of the plurality of semiconductor light emitting elements 22b to emit light in the 2 nd light emission pattern, the 2 nd light distribution pattern (for example, a light distribution pattern for a parking lamp) can be formed.

In addition, according to the present embodiment, since the film 22A of the 1 st and 2 nd film light sources 22A and 22B is a transparent film, the light emitted rearward from the semiconductor light emitting elements 22 of the 1 st and 2 nd film light sources 22A and 22B passes through the film 22A. This improves the light use efficiency of light emitted rearward from the semiconductor light emitting elements 22B of the 1 st and 2 nd film light sources 22A and 22B.

Further, according to the present embodiment, since the 1 st and 2 nd film light sources 22A and 22B are used, and the 1 st and 2 nd film light sources 22A and 22B are fixed in a state where the semiconductor light emitting element 22B having a luminance higher than that of the organic EL is two-dimensionally arranged, and have flexibility, the vehicle lamp 10 can be provided which is thin and flexible and has a sufficient amount of light capable of forming a parking light distribution pattern, a steering light distribution pattern, and the like.

Next, a modified example will be described.

In the above-described embodiments, the example in which the vehicle lamp of the present invention is applied to a vehicle signal lamp such as a tail lamp, a stop lamp, or a turn signal lamp is described, but the present invention is not limited thereto. For example, the vehicle lamp of the present invention can be applied to general lighting in addition to a DRL lamp, an interior lighting (for example, an indicator lamp), and a warning lamp.

In the above embodiment, the example in which the emission color of the semiconductor light emitting element 22B of the 1 st film light source 22A is the same as the emission color of the semiconductor light emitting element 22B of the 2 nd film light source 22B has been described, but the present invention is not limited thereto. For example, the emission color of the semiconductor light emitting element 22B of the 1 st film light source 22A and the emission color of the semiconductor light emitting element 22B of the 2 nd film light source 22B may be different from each other.

For example, the emission color of the semiconductor light emitting element 22B of the 1 st film light source 22A may be red, and the emission color of the semiconductor light emitting element 22B of the 2 nd film light source 22B may be amber.

In this way, it is possible to realize a vehicle lamp having different colors and multiple functions, for example, a tail lamp (red) and a turn lamp (amber) using 1 lamp unit 20.

Further, an opaque film may be used as the film 22a of the film light source.

In the above embodiment, the example in which the lamp unit 20 is configured using 2 film light sources 22 (for example, the 1 st and 2 nd film light sources 22A and 22B) in a state of being overlapped in the vehicle front-rear direction has been described, but the invention is not limited to this.

For example, the lamp unit 20 may be configured using film light sources that do not overlap in the vehicle front-rear direction.

Further, the lamp unit 20 may be configured using 3 or more film light sources that are overlapped in the vehicle front-rear direction.

Fig. 10 shows an example in which the lamp unit 20 is configured by using 4 film light sources in a state of being overlapped in the vehicle front-rear direction. In fig. 10, reference numeral 22c denotes a film light source for a turn signal (the emission color of the semiconductor light emitting element is amber), and reference numeral 22D denotes a film light source for a back signal (the emission color of the semiconductor light emitting element is white).

Fig. 11 shows an example of the light emission pattern of the film light source (semiconductor light emitting element 22 b).

As for the light emission pattern of the film light source (semiconductor light emitting element 22b), as shown in fig. 11 (a), a light emission pattern having the same light emission shape and different sizes may be used for each film light source, or as shown in fig. 11 (b), a light emission pattern having different light emission shapes may be used for each film light source. This makes it possible to further make the sense of depth and the stereoscopic effect conspicuous.

In the above-described embodiment, an example in which a screw is used as the lens fixing member 24d has been described, but the present invention is not limited to this. For example, an engaging member may be used as the lens fixing member 24 d. For example, although not shown, the 1 st claw portion is provided on the front lens 24a, the 1 st hook portion and the 2 nd claw portion are provided on the intermediate lens 24b, and the 2 nd hook portion is provided on the rear lens 24c (or, the 1 st hook portion is provided on the front lens 24a, the 1 st claw portion and the 2 nd hook portion are provided on the intermediate lens 24b, and the 2 nd claw portion is provided on the rear lens 24 c). Then, the 1 st claw portion is engaged with the 1 st hook portion, and the 2 nd claw portion is engaged with the 2 nd hook portion. In this way, the front lens 24a, the intermediate lens 24b, and the rear lens 24c can also be fixed in a mutually positioned state.

Fig. 12 shows an example in which a light guide plate 28 for guiding light from the semiconductor light emitting element 26 and emitting the light from the front surface is disposed between the front lens 24a and the 1 st film light source 22A. A structure (e.g., a lens cut such as a plurality of V-grooves) for emitting light from semiconductor light emitting element 26 guided in light guide plate 28 from the front surface is applied to the back surface of light guide plate 28.

As described above, for example, when the vehicle lamp 10 functions as a tail lamp, the 1 st light emission mode is partially or entirely emitted from the semiconductor light emitting elements 22B of the 1 st film light source 22A and the 2 nd film light source 22B, and the semiconductor light emitting elements 26 are turned on to emit light from the semiconductor light emitting elements 26 guided in the light guide plate 28 from the front surface to perform surface light emission as described above, whereby a light emission appearance with extremely high design in the 1 st light emission mode can be realized at the time of surface light emission.

Although not shown, a light guide plate 28 that guides light from the semiconductor light emitting element and emits the light from the front surface may be further provided between the intermediate lens 24B and the 2 nd film light source 22B.

Next, an example in which the lamp unit 20A is configured using the film light sources 22 that do not overlap in the vehicle front-rear direction will be described as a modification.

Although not shown, the lamp unit 20A of the present modification corresponds to the lamp unit 20 described in the above embodiment without the 1 st film light source 22A and the intermediate lens 24 b. In this case, the 2 nd film light source 22b does not overlap with other film light sources. Otherwise, the same as the vehicle lamp 10 described in the above embodiment is applied. Hereinafter, differences from the vehicle lamp 10 described in the above embodiment will be mainly described.

The light emission pattern of the 2 nd film light source 22B (semiconductor light emitting element 22B) will be described.

First, an example of a light emission mode in a case where the vehicle lamp 10 using the lamp unit 20A functions as a tail lamp will be described.

When the vehicle lamp 10 using the lamp unit 20A functions as a tail lamp, part or all of the semiconductor light emitting elements 22B of the 2 nd film light source 22B are caused to emit light in the 3 rd light emission mode.

The 3 rd light emission mode is, for example, a mode in which a portion (semiconductor light emitting element 22B) depicted by a black dot in fig. 4 (a) of the semiconductor light emitting element 22B of the 2 nd film light source 22B emits light at the 1 st luminance. In addition, the 3 rd light emission mode is not limited thereto. For example, as the 3 rd light emission pattern, a light emission pattern may be used in which a part of the semiconductor light emitting elements 22b in the portion (semiconductor light emitting elements 22b) depicted with black dots in fig. 4a is turned off or dimmed. As the 3 rd light emission pattern, a light emission pattern in which the luminance Gradation (Gradation) of the portion (semiconductor light emitting element 22b) depicted by a black dot in fig. 4 (a) changes may be used. As the 3 rd light emission mode, a light emission mode in which the luminance of the individual semiconductor light emitting elements 22b is changed may be used. This can express a sense of distance (sense of depth).

The 3 rd light emission pattern is not limited to the static light emission pattern, and may be a dynamic light emission pattern in which the luminance, light emission shape, light emission position, and the like of the portion (semiconductor light emitting element 22b) depicted with a black dot in fig. 4a change with time.

As described above, when the semiconductor light emitting element 22B of the 2 nd film light source 22B emits light in the 3 rd light emission mode, the tail light distribution mode is formed by the light Ray1 emitted forward from the semiconductor light emitting element 22B of the 2 nd film light source 22B.

Light Ray2 emitted rearward from the semiconductor light emitting element 22B of the 2 nd film light source 22B through the film 22a is reflected by the reflecting surface 40, and the reflecting surface 40 emits light.

As described above, when the vehicle lamp 10 using the lamp unit 20A functions as a tail lamp, the 2 nd film light source 22B and the reflecting surface 40 emit light, respectively, and the reflecting surface 40 that emits light behind the 2 nd film light source 22B can be visually recognized through the 2 nd film light source 22B. Thus, a three-dimensional light-emitting appearance with a sense of depth can be realized.

As described above, the film light source support members 24(24a to 24c) support the 2 nd film light source 22B in a state where the 2 nd film light source 22B is held in a predetermined shape (for example, a curved shape). Thereby, the semiconductor light emitting elements 22B of the 2 nd film light source 22B are arranged three-dimensionally. Thus, a stereoscopic light-emitting appearance with a sense of depth can be realized.

Further, since the lamp unit 20A is disposed in the lamp chamber 54 in a state of keeping a space with the housing 52, a light-emitting appearance as if the lamp unit 20A were floating in the lamp chamber 54 can be visually recognized.

Next, an example of a light emission mode in a case where the vehicle lamp 10 using the lamp unit 20A functions as a stop lamp will be described.

When the vehicle lamp 10 using the lamp unit 20A functions as a stop lamp, part or all of the semiconductor light emitting elements 22B of the 2 nd film light source 22B are caused to emit light in the 4 th light emission mode different from the 3 rd light emission mode.

The 4 th light emission mode is, for example, a mode in which a portion (semiconductor light emitting element 22B) depicted by a black dot in fig. 4 (B) among the semiconductor light emitting elements 22B of the 2 nd film light source 22B is caused to emit light at the 2 nd luminance (2 nd luminance > 1 st luminance). In addition, the 4 th light emission mode is not limited thereto. For example, as the 4 th light emission pattern, a light emission pattern may be used in which a part of the semiconductor light emitting elements 22b in the portion (semiconductor light emitting elements 22b) depicted with black dots in fig. 4b is turned off or dimmed. As the 4 th light emission pattern, a light emission pattern in which the luminance Gradation (Gradation) of the portion (semiconductor light emitting element 22b) depicted by a black dot in fig. 4 (b) changes may be used. As the 4 th light emission mode, a light emission mode in which the luminance of the individual semiconductor light emitting elements 22b is changed may be used. This can express a sense of distance (sense of depth).

The 4 th light emission pattern is not limited to the static light emission pattern, and may be a dynamic light emission pattern in which the luminance, light emission shape, light emission position, and the like of the portion (semiconductor light emitting element 22b) depicted with a black dot in fig. 4b change with time.

As described above, when the semiconductor light emitting element 22B of the 2 nd film light source 22B emits light in the 4 th light emission mode, the parking lamp light distribution mode is formed by the light Ray1 emitted forward from the semiconductor light emitting element 22B of the 2 nd film light source 22B.

Light Ray2 emitted rearward from the semiconductor light emitting element 22B of the 2 nd film light source 22B through the film 22a is reflected by the reflecting surface 40, and the reflecting surface 40 emits light.

As described above, when the vehicle lamp 10 using the lamp unit 20A functions as a stop lamp, the 2 nd film light source 22B and the reflecting surface 40 emit light, respectively, and the reflecting surface 40 that emits light behind the 2 nd film light source 22B can be visually recognized through the 2 nd film light source 22B. Thus, a three-dimensional light-emitting appearance with a sense of depth can be realized.

As described above, the film light source support members 24(24a to 24c) support the 2 nd film light source 22B in a state where the 2 nd film light source 22B is held in a predetermined shape (for example, a curved shape). Thereby, the semiconductor light emitting elements 22B of the 2 nd film light source 22B are arranged three-dimensionally. Thus, a stereoscopic light-emitting appearance with a sense of depth can be realized.

Further, since the lamp unit 20A is disposed in the lamp chamber 54 in a state of keeping a space with the housing 52, a light-emitting appearance as if the lamp unit 20A floats in the lamp chamber 54 can be visually recognized.

As described above, according to the present modification, in addition to the effects of the above-described embodiment, it is possible to configure a thin and lightweight lamp unit 20A in which the front lens 24a and the rear lens 24c are fixed in a state in which the 2 nd film light source 22B is disposed between the front lens 24a and the rear lens 24 c.

Further, according to the present modification, since the back surface of the 2 nd film light source 22B is in surface contact with the front surface of the rear lens 24c, the shape of the 2 nd film light source 22B (film 22a) can be maintained in a constant shape (for example, a curved shape).

Further, according to the present modification, since the front surface of the 2 nd film light source 22B faces the rear surface of the front lens 24a with a space therebetween, it is possible to suppress damage caused by contact or the like between the front surface of the 2 nd film light source 22B (the plurality of semiconductor light emitting elements 22B mounted on the front surface) and the rear surface of the front lens 24 a.

Further, according to the present modification, by using 1 film light source (for example, the 2 nd film light source 22B), it is possible to form a tail lamp light distribution mode and a stop lamp light distribution mode.

Next, a vehicle lamp 10A according to embodiment 2 will be described.

Fig. 13 is a schematic view (longitudinal sectional view) of a vehicle lamp 10A of embodiment 2, and fig. 14 is a schematic view (perspective view) of the vehicle lamp 10A of embodiment 2.

As shown in fig. 13 and 14, the vehicle lamp 10A according to embodiment 2 corresponds to the vehicle lamp 10 described in embodiment 1 described above, in which a light distribution control lens 60 is added and a reflecting surface 40A is used instead of the reflecting surface 40. Otherwise, the same as the vehicle lamp 10 described in embodiment 1 is applied. Hereinafter, differences from the vehicle lamp 10 described in embodiment 1 will be mainly described. The same components as those of the vehicle lamp 10 described in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted as appropriate.

The film light source 22 is a film light source including a flexible transparent film 22A and a plurality of semiconductor light emitting elements 22B fixed to at least the surface of the transparent film 22A in a two-dimensional arrangement, and is, for example, a1 st film light source 22A or a2 nd film light source 22B.

The light distribution control lens 60 controls light Ray2 that is emitted from a part or all of the semiconductor light emitting elements 22b of the film light source 22 and passes through the transparent film 22 a. The material of the light distribution control lens 60 is a transparent resin such as acrylic or polycarbonate.

The light distribution control lens 60 is a plate-shaped lens including a front surface and a back surface on the opposite side. As shown in fig. 14, the light distribution control lens 60 includes a plurality of lens portions 62 corresponding to the plurality of semiconductor light emitting elements 22b of the film light source 22, respectively. The plurality of lens portions 62 may be provided on the front surface of the light distribution control lens 60 or may be provided on the rear surface.

Each of the plurality of lens portions 62 is a lens portion having a focal point set in the vicinity of the semiconductor light emitting element 22b corresponding to the lens portion 62, and is, for example, a fresnel lens.

The plurality of lens portions 62 control light rays 2 emitted from the semiconductor light-emitting elements 22b corresponding to the lens portions 62 and transmitted through the transparent film 22 a. Specifically, each of the plurality of lens portions 62 converts light Ray2 emitted from the semiconductor light-emitting element 22b corresponding to the lens portion 62 and transmitted through the transparent film 22a into parallel light (see fig. 13).

As described above, the light distribution control lens 60 controls the light Ray2 that is emitted from a part or all of the semiconductor light emitting elements 22b of the film light source 22 and passes through the transparent film 22 a.

The light distribution control lens 60 is disposed between the film light source 22 and the reflection surface 40A in a state where the semiconductor light emitting element 22b of the film light source 22 and the lens portion 62 of the light distribution control lens 60 face each other with the film 22a interposed therebetween and the lens portion 62 of the light distribution control lens 60 faces the reflection region 42 of the reflection surface 40A (see fig. 13 and 14).

The reflection surface 40A reflects the light Ray2 controlled by the light distribution control lens 60 in the target direction. The reflecting surface 40A is formed by, for example, performing aluminum deposition on the front surface of the case 52.

As shown in fig. 14, the reflection surface 40A includes, for example, a plurality of reflection regions 42 corresponding to the plurality of lens portions 62. Each of the plurality of reflection regions 42 is a hemispherical reflection surface that is convex or concave toward the lens portion 62 corresponding to the reflection region 42. The reflecting surface 40A may be a free-form surface.

The light Ray2 controlled by the lens unit 62, that is, the light Ray2 converted into parallel light is diffused vertically and horizontally in the reflection region 42, passes through the light distribution control lens 60 and the film light source 22, and is irradiated forward (see fig. 13).

For example, the diffusion range of the light Ray2 reflected by the reflection region 42 can be adjusted by adjusting the curvature of the longitudinal section and the curvature of the cross section of the reflection region 42. For example, the curvature of the vertical section and the curvature of the horizontal section of the reflection region 42 are adjusted so that the spread range of the light Ray2 reflected by the reflection region 42 enters the range of the tail light mode or the stop light mode.

As described above, the light Ray2 controlled by the light distribution control lens 60 is reflected toward the target direction.

The light distribution control lens 60 and the reflection surface 40A configured as described above can be applied to various vehicle lamps using the film light source 22.

For example, the light distribution control lens 60 and the reflection surface 40A configured as described above can be applied to the vehicle lamp 10 according to embodiment 1 (the vehicle lamp 10 using 2 film light sources 22 in a state of being overlapped in the vehicle front-rear direction). Hereinafter, the vehicle lamp 10 according to embodiment 1 to which the light distribution control lens 60 and the reflection surface 40A are applied will be referred to as a vehicle lamp 10 Al.

Fig. 15 is an example (schematic view) of the vehicle lamp 10 Al. In fig. 15, the outer lens 50 and the front lens 24a are omitted.

In fig. 15, the intermediate lens 24b and the rear lens 24c are each configured as a light distribution control lens 60. That is, the intermediate lens 24b and the rear lens 24c also serve as the light distribution control lens 60.

Fig. 16 is another example (schematic view) of the vehicular lamp 10 Al. In fig. 16, the outer lens 50 and the front lens 24a are omitted.

In fig. 16, light distribution control lenses 60 are disposed between the intermediate lens 24B and the 2 nd film light source 22B, and between the rear lens 24c and the reflection surface 40A, respectively.

According to the vehicle lamp 10Al, in addition to the effects of embodiment 1, the light use efficiency of the light Ray2 emitted rearward from the semiconductor light emitting elements 22B of the 1 st and 2 nd film light sources 22A and 22B is improved.

That is, as shown in fig. 15 and 16, when the vehicle lamp 10A1 is caused to function as a tail lamp, the light Ray2 irradiated (radiated) backward from the 1 st and 2 nd film light sources 22A and 22B is reflected by the reflecting surface 40A in the target direction in addition to the light Ray irradiated (radiated) forward from the 1 st and 2 nd film light sources 22A and 22B, respectively, whereby a tail lamp light distribution pattern can be formed. Specifically, the tail light distribution pattern can be formed by the light Ray2 which is irradiated (radiated) rearward from the 1 st and 2 nd film light sources 22A and 22B, respectively, is controlled by the light distribution control lens 60, is reflected by the reflection surface 40A, and passes through the light distribution control lens 60 and the 1 st and 2 nd film light sources 22A and 22B. The same applies to the case where the vehicle lamp 10Al is caused to function as a stop lamp.

Further, for example, the light distribution control lens 60 and the reflection surface 40A configured as described above can be applied to the vehicle lamp 10 according to the modification of embodiment 1 (the vehicle lamp 10 using the film light sources 22 that do not overlap in the vehicle front-rear direction). Hereinafter, the vehicle lamp 10 according to the modification of embodiment 1 to which the light distribution control lens 60 and the reflection surface 40A are applied will be referred to as a vehicle lamp 10A 2.

Fig. 17 is an example (schematic view) of the vehicular lamp 10a 2. In fig. 17, the outer lens 50 and the front lens 24a are omitted.

In fig. 17, the rear lens 24c is configured as a light distribution control lens 60. That is, the rear lens 24c also serves as the light distribution control lens 60.

Fig. 18 is another example (schematic view) of the vehicular lamp 10a 2. In fig. 18, the outer lens 50 and the front lens 24a are omitted.

In fig. 18, the light distribution control lens 60 is disposed between the rear lens 24c and the reflection surface 40A.

According to the vehicular lamp 10a2, in addition to the effects of embodiment 1, the light use efficiency of the light Ray2 emitted rearward from the semiconductor light emitting element 22B of the film light source 22 (for example, the 2 nd film light source 22B) is improved.

That is, as shown in fig. 17 and 18, when the vehicle lamp 10A2 is to function as a tail lamp, the tail lamp light distribution mode can be formed by reflecting light Ray2 that is rearward irradiated (radiated) from the film light source 22 toward a target direction by the reflecting surface 40A in addition to light Ray that is forward irradiated (radiated) from the film light source 22. Specifically, the tail light distribution mode can be formed by light Ray2 which is emitted (radiated) rearward from film light source 22, is controlled by light distribution control lens 60, is reflected by reflection surface 40A, and passes through light distribution control lens 60 and film light source 22. The same applies to the case where the vehicle lamp 10a2 is caused to function as a stop lamp.

As described above, according to embodiment 2, in addition to the effects of embodiment 1, the light use efficiency of the light Ray2 emitted rearward from the semiconductor light emitting element 22b of the film light source 22 is improved. That is, in addition to the light Ray radiated (radiated) forward from the film light source 22, the light Ray2 radiated (radiated) backward from the film light source 22 is reflected in the target direction by the reflection surface 40A, whereby a predetermined light distribution pattern (for example, a tail light distribution pattern or a parking light distribution pattern) can be formed.

Next, a modified example will be described.

In embodiment 2 described above, an example in which a fresnel lens is used as the lens unit 62 of the light distribution control lens 60 is described, but the present invention is not limited to this. For example, a notch cut (flute cut) or other lens cuts may be used as the lens portion 62 of the light distribution control lens 60.

Next, a vehicle lamp 10B according to embodiment 3 will be described.

Fig. 19 is a schematic view (cross-sectional view) of a vehicle lamp 10B of embodiment 3. In fig. 19, the outer lens 50 is omitted.

As shown in fig. 19, the vehicle lamp 10B according to embodiment 3 corresponds to a vehicle lamp in which the lamp unit support member 70 is used in place of the lamp unit support members (the flange portions 24a2 to 24c2) of the vehicle lamp 10 described in embodiment 1. Otherwise, the same as the vehicle lamp 10 described in embodiment 1 is applied. Hereinafter, differences from the vehicle lamp 10 described in embodiment 1 will be mainly described. The same components as those of the vehicle lamp 10 described in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted as appropriate.

The lamp unit support member 70 supports the lamp unit 20 in the lamp chamber 54 formed by the housing 52 and the outer lens 50 in a state where a space is kept between the lamp unit and the housing 52.

For example, as shown in fig. 19, the lamp unit support member 70 is a transparent support portion 70A having a base end portion 70A (corresponding to a part of the present invention) fixed to the lamp unit 20 (for example, the front lens 24a) and a tip end portion 70b (corresponding to another part of the present invention) fixed to the housing 52.

The transparent support portion 70A extends rearward from a base end portion 70A fixed to the one end portion 24a4 of the front lens 24a, and a front end portion 70b thereof is fixed to the housing 52, whereby the lamp unit 20 is supported (cantilevered-supported) in the lamp chamber 54 with a space kept between the lamp unit and the housing 52. Transparent support portion 70A is fixed to case 52 by fitting or engaging front end portion 70b thereof into opening Hl formed in case 52, for example. The material of transparent support portion 70A is a transparent resin such as acrylic or polycarbonate.

The lamp unit support member 70 having the above-described structure can be applied to various vehicle lamps using the film light source 22. For example, the lamp unit support member 70 having the above-described structure can be applied to the vehicular lamp 10 according to embodiment 1 (the vehicular lamp 10 using 2 film light sources 22 in a state of being overlapped in the vehicle front-rear direction), the vehicular lamp 10 according to a modification of embodiment 1 (the vehicular lamp 10 using film light sources 22 that do not overlap in the vehicle front-rear direction), and the vehicular lamp 10A according to embodiment 2 (the vehicular lamp 10 using the light distribution control lens 60 and the reflection surface 40A).

As described above, according to embodiment 3, in addition to the effects of embodiment 1, the following effects can be achieved. That is, when the vehicle lamp 10B is to function as a tail lamp, the lamp unit 20 is fixed in the lamp chamber 54 with a space between the lamp unit and the housing 52, and the lamp unit support member 70 is transparent and is difficult to be visually recognized, so that a light emission appearance can be realized as if the lamp unit 20 were floating in the lamp chamber 54.

Next, a modified example will be described.

Fig. 20 is a schematic view (cross-sectional view) of a modification of the vehicle lamp 10B of embodiment 3.

In embodiment 3 described above, an example has been described in which the lamp unit supporting member 70 is a transparent support portion 70A, the transparent support portion 70A extends rearward from a base end portion 70A fixed to the one end portion 24a4 of the front lens 24a, and the front end portion 70b of the transparent support portion 70A is fixed to the housing 52, but the present invention is not limited to this. For example, as shown in fig. 20, as the lamp unit supporting member 70, in addition to the transparent support portion 70A, a transparent support portion 70B may be used, the transparent support portion 70B extending rearward from a base end portion 70A fixed to the other end portion 24a5 of the front lens 24a, and a front end portion 70B of the transparent support portion 70B being fixed to the housing 52.

In embodiment 3, an example in which the base end portion 70A of the transparent support portion 70A (70B) is fixed to the front lens 24a has been described, but the present invention is not limited to this. That is, the base end 70A of the transparent support portion 70A (70B) may be fixed to the lamp unit 20 at any position as long as it is fixed. For example, the base end 70A of the transparent support 70A (70B) may be fixed to the intermediate lens 24B or may be fixed to the rear lens 24 c.

The numerical values shown in the above embodiments are all examples, and it is needless to say that appropriate numerical values different from these numerical values can be used.

The above embodiments are merely illustrative in all respects. The present invention is not to be interpreted in a limiting manner using the description of the above embodiments. The present invention may be embodied in other various forms without departing from its spirit or essential characteristics.