阅读说明：本技术 一种微型车灯模组 (Miniature car light module ) 是由 陆剑清 仇智平 李聪 李辉 祝贺 桑文慧 于 2019-08-23 设计创作，主要内容包括：本发明涉及车辆照明技术领域,尤其涉及一种微型车灯模组,包括光源、反射结构和透镜,光源发出的光线经反射结构反射后从透镜射出,形成照明光形,光源为激光光源,反射结构包括用于形成中心区域光形的第一反射面和用于形成展宽区域光形的第二反射面,第一反射面反射的光线扩散角度小于第二反射面反射的光线扩散角度。可以有效提高由第一反射面形成的中心区域光形的亮度,从而提高驾驶员的路面可视性。光源采用发光面积小且单位面积发光强度高的激光光源,可使得反射镜和透镜的尺寸和焦距都大大减小,结构紧凑、小巧,使得整个车灯模组的体积大大减小,相应制造成本也大大降低。(The invention relates to the technical field of vehicle illumination, in particular to a miniature car lamp module which comprises a light source, a reflecting structure and a lens, wherein light rays emitted by the light source are reflected by the reflecting structure and then emitted from the lens to form an illumination light shape, the light source is a laser light source, the reflecting structure comprises a first reflecting surface used for forming the light shape of a central area and a second reflecting surface used for forming the light shape of a widening area, and the light diffusion angle reflected by the first reflecting surface is smaller than the light diffusion angle reflected by the second reflecting surface. The brightness of the light pattern of the central area formed by the first reflecting surface can be effectively improved, thereby improving the road surface visibility of the driver. The light source adopts the laser light source that luminous area is little and luminous intensity is high per unit area, can make the size and the focus of speculum and lens all reduce greatly, compact structure, small and exquisite for the volume of whole car light module reduces greatly, corresponding manufacturing cost is greatly reduced also.)

1. The utility model provides a miniature car light module, includes light source (1), reflection configuration and lens (3), the light warp that light source (1) sent follow behind the reflection configuration reflection lens (3) jet out, form the illumination light shape, its characterized in that, light source (1) is laser source, reflection configuration is including first plane of reflection (2a) that are used for forming central zone (A) light shape and second plane of reflection (2B) that are used for forming the regional (B) light shape of widening, the light diffusion angle of first plane of reflection (2a) reflection is less than the light diffusion angle of second plane of reflection (2B) reflection.

2. The miniature vehicular lamp module according to claim 1, wherein a step difference is formed between the first reflecting surface (2a) and the second reflecting surface (2 b).

3. The miniature vehicular lamp module of claim 1 wherein the curvature of said first reflective surface (2a) is greater than the curvature of said second reflective surface (2 b).

4. The miniature vehicular lamp module according to claim 1, wherein the reflective structure further comprises a third reflective surface (2C) and a fourth reflective surface (2d), and a part of the light emitted from the light source (1) is reflected from the third reflective surface (2C) to the fourth reflective surface (2d), and is reflected from the fourth reflective surface (2d) and then exits from the lens (3) to form a zone iii light shape.

5. The miniature vehicle lamp module set according to claim 4, wherein the first reflective surface (2a), the second reflective surface (2b) and the third reflective surface (2c) are sequentially connected from back to front to form a reflector (2), and the third reflective surface (2c) and the first reflective surface (2a), the third reflective surface (2c) and the second reflective surface (2b) are located on different ellipsoids.

6. The miniature car light module according to claim 5, wherein a reflector connecting part (21) is arranged at the front end of the reflector (2), a lens connecting part (31) is arranged at the rear end of the lens (3), and the reflector connecting part (21) is in fit connection with the lens connecting part (31) so that the reflector (2) and the lens (3) are relatively fixed.

7. The miniature car light module set according to claim 6, wherein the light source (1) is disposed on a circuit board (4), a positioning hole (41) is disposed on the circuit board (4), and a positioning pin (23) is disposed at the rear end of the reflector (2) and is in plug-in fit with the positioning hole (41).

8. The miniature vehicular lamp module according to claim 5, wherein the fourth reflecting surface (2d) is of an integral structure with the reflector (2).

9. The miniature vehicle lamp module set according to claim 5 or 8, further comprising a cut-off line structure (8) for forming a cut-off line (E) of an optical shape, wherein the cut-off line structure (8) is an integral structure integrally provided with the reflector (2).

10. The miniature vehicle lamp module set according to claim 5 or 8, further comprising a shielding block (9) for controlling the brightness of a 50L dark area (D) of a light shape, wherein the shielding block (9) and the reflector (2) are integrally arranged in a whole structure.

11. The miniature vehicular lamp module according to claim 1, further comprising a light shield (7), wherein the light shield (7) is connected to the lens (3).

12. The miniature vehicular lamp module according to claim 1, wherein the radius of curvature of the lens (3) is R, the height of the lens (3) is H and satisfies: h is less than or equal to 4R/3.

13. The miniature vehicular lamp module according to claim 1, wherein the height of the lens (3) is 5mm-15 mm.

14. The miniature vehicular lamp module according to claim 1, wherein the focal length of the lens (3) is 10mm-20 mm.

Technical Field

The invention relates to the technical field of vehicle illumination, in particular to a miniature vehicle lamp module.

Background

In the field of vehicle lamp technology, a vehicle lamp module refers to a device having a lens or a component of equivalent structure as a final light-emitting element and used for low beam or high beam illumination of an automotive headlamp. In recent years, as the development of the automobile industry is matured and stabilized, the variety of the lamp modules is diversified, and more requirements are put on the comprehensive performance of the lamp modules, such as the uniformity of the shape of the low beam or the high beam of the automobile headlamp, the visibility of the low beam, the heat dissipation performance, the brightness of the high beam, the structure, the weight and the volume of the module, and the like.

Taking low beam illumination as an example, according to the law, as shown in fig. 1, the low beam shape formed by the lamp module includes a central region a, a widened region B, a iii-region C, a 50L dark region D, and a cut-off line E, as shown in fig. 2, the widened region B partially coincides with the central region a for increasing the low beam illumination range. Accordingly, the vehicle lamp module has an optical structure for forming light shapes of the respective regions. The vehicle lamp module in the prior art mainly has the following defects.

(1) The brightness of the central region of the light shape is low. The reflector of the existing car lamp module is only provided with a smooth reflecting surface, the size of the light diffusion angle reflected by the reflecting surface is basically consistent, the diffusion angle reflected to the light shape of the finally formed car lamp is also consistent, so that the light emitted to the light shape central area is not concentrated enough, the light shape brightness of the central area is not high enough, but the higher the brightness of the light shape central area is in the allowed range of the regulations, the better the visibility of the road surface of a driver is improved, and the reflecting surface of the reflector of the existing car lamp module cannot meet the requirement.

(2) The volume is large. The existing mirror is used as the primary stageThe lamp module of the optical element adopts an LED light source, and the luminous flux of the unit area is only 300-400lm/mm²If the light shape meeting the regulation brightness is obtained, a plurality of LED light sources need to be arranged, so that the light emitting area is large, a reflector with a large reflecting surface is needed to be matched, correspondingly, the focal length of the reflector is long, the size of a lens matched with the reflector is also large, generally, the lens is 50mm high and 70mm wide, and in order to ensure the light efficiency, the focal length of the lens is also long, so that the size of the whole car lamp module is large.

(3) The optical system has low accuracy. On one hand, if an ideal light shape of the car lamp is to be obtained, the relative position precision of the primary optical element and the lens needs to be ensured, and the existing car lamp module is characterized in that the primary optical element and the radiator are positioned and installed, and the lens support are positioned and installed, and then are positioned and installed with the radiator or are positioned and installed with the radiator through a transition support. On the other hand, the optical structures that present car light module group is used for forming cut-off line, 50L dark space and III district etc. all set up on the lens support, and the lens support front end is used for installing lens, and the rear end is used for carrying out fixed connection with the radiator, need guarantee the relative position precision of primary optical element, lens support and lens three in other words, just can obtain the light shape that accords with the regulation requirement, and the relative position precision of three is more difficult to guarantee, leads to optical system precision also more difficult to guarantee.

(4) The dispersion phenomenon is severe. The thickness of the upper end and the lower end of a lens adopted by the existing car lamp module is very thin, and light rays which are irradiated to the upper end and the lower end of the lens can generate large deflection, so that the serious dispersion phenomenon is caused, and the regulation requirement is not met.

Disclosure of Invention

The present invention provides a miniature vehicle lamp module, which can improve the brightness of the light shape central region to overcome the above-mentioned defects of the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a miniature car light module, includes light source, reflection configuration and lens, and the light that the light source sent jets out from lens after reflection configuration reflection, forms the illumination light shape, and the light source is laser source, and reflection configuration is including the second plane of reflection that is used for forming the first plane of reflection of central region light shape and is used for forming the regional light shape of widening, and the light diffusion angle that first plane of reflection reflects is less than the light diffusion angle that the second plane of reflection reflects.

Preferably, a level difference is formed between the first reflecting surface and the second reflecting surface.

Preferably, the curvature of the first reflective surface is greater than the curvature of the second reflective surface.

Preferably, the reflecting structure further includes a third reflecting surface and a fourth reflecting surface, and a part of the light emitted by the light source is reflected to the fourth reflecting surface by the third reflecting surface and is emitted from the lens after being reflected by the fourth reflecting surface, so as to form a zone iii light shape.

Preferably, the first reflecting surface, the second reflecting surface and the third reflecting surface are sequentially connected from back to front to form a reflecting mirror, and the third reflecting surface and the first reflecting surface, and the third reflecting surface and the second reflecting surface are all located on different ellipsoids.

Preferably, the front end of the reflector is provided with a reflector connecting part, the rear end of the lens is provided with a lens connecting part, and the reflector connecting part is connected with the lens connecting part in a matching manner, so that the reflector and the lens are relatively fixed.

Preferably, the light source is arranged on a circuit board, the circuit board is provided with a positioning hole, and the rear end of the reflector is provided with a positioning pin which is in inserted fit with the positioning hole.

Preferably, the fourth reflecting surface and the reflector are integrally arranged in a whole structure.

Preferably, the reflector further comprises a cut-off line structure for forming a cut-off line of the light shape, and the cut-off line structure and the reflector are integrally arranged to form a whole structure.

Preferably, the LED lamp further comprises a shielding block for controlling the brightness of a 50L dark space of the light shape, and the shielding block and the reflector are integrally arranged.

Preferably, the lens further comprises a light shield, and the light shield is connected with the lens.

Preferably, the radius of curvature of the lens is R, the height of the lens is H and satisfies: h is less than or equal to 4R/3.

Preferably, the height of the lens is 5mm to 15 mm.

Preferably, the focal length of the lens is 10mm-20 mm.

Compared with the prior art, the invention has the remarkable progress that:

under the same luminous flux, the smaller the light diffusion angle is, the more the light is converged, and the brightness of the formed light shape is higher. In the invention, the light diffusion angle reflected by the first reflecting surface is smaller than that reflected by the second reflecting surface, so that the brightness of the light shape of the central area formed by the first reflecting surface can be effectively improved, and the road surface visibility of a driver is improved. In the invention, the light source adopts the laser light source with small light-emitting area and high light-emitting intensity per unit area, so that the sizes and focal lengths of the reflector and the lens are greatly reduced, the structure is compact and small, the volume of the whole car lamp module is greatly reduced, and the corresponding manufacturing cost is also greatly reduced.

Drawings

Fig. 1 is a schematic view of a low beam pattern.

Fig. 2 is a schematic diagram of the center region and the widening region of the low beam shape.

FIG. 3 is a schematic view of an optical assembly of the miniature vehicular lamp module according to the embodiment of the present invention.

FIG. 4 is a schematic longitudinal sectional view of a reflection structure of a miniature lamp module according to an embodiment of the present invention.

Fig. 5 is a schematic view of an optical path of a light beam reflected by the first reflecting surface in the miniature vehicle lamp module according to the embodiment of the invention.

Fig. 6 is a schematic view of the light path of the light reflected by the second reflecting surface in the miniature vehicle lamp module according to the embodiment of the invention.

Fig. 7 is a schematic view of the light path of the light reflected by the third reflective surface and the fourth reflective surface in the miniature vehicle lamp module according to the embodiment of the present invention.

FIG. 8 is a schematic view of a view angle of the miniature vehicular lamp module according to the embodiment of the present invention.

Fig. 9 is a schematic structural view of another view angle of the miniature vehicular lamp module according to the embodiment of the present invention.

FIG. 10 is a schematic longitudinal sectional view of a miniature lamp module according to an embodiment of the present invention.

FIG. 11 is an exploded view of the miniature vehicular lamp module according to the embodiment of the present invention.

FIG. 12 is a schematic view of a connection structure between a lens and a reflector in the miniature vehicular lamp module according to the embodiment of the present invention.

FIG. 13 is a schematic view of a connection structure of a lens, a reflector and a circuit board in the miniature vehicular lamp module according to the embodiment of the present invention.

Fig. 14 is a longitudinal sectional view of fig. 13.

Fig. 15 is a schematic structural diagram of a viewing angle when the reflector is used to form a low beam shape in the miniature vehicle lamp module according to the embodiment of the present invention.

Fig. 16 is a schematic structural diagram of another viewing angle when the reflector is used to form a low beam shape in the miniature vehicle lamp module according to the embodiment of the present invention.

Wherein the reference numerals are as follows:

A. central region B, widened region

C. III zone D, 50L dark zone

E. Cut-off line 1, light source

2. Mirror 2a, first reflecting surface

2b, a second reflecting surface 2c, and a third reflecting surface

2d, fourth reflecting surface 21, and mirror connecting part

22. First connecting hole 23 and positioning pin

3. Lens 3a and light-emitting surface of lens

31. Lens connection part 32 and first connection pin

33. Second connecting pin 4 and circuit board

41. Positioning hole 5 and heat sink

6. Mounting screw 7, lens hood

71. Second connecting hole 8 and cut-off line structure

9. Stop block

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 to 16, an embodiment of a miniature vehicle lamp module according to the present invention is disclosed. The miniature car lamp module of the embodiment is used for forming a car lamp illumination light shape. As shown in fig. 1 and 2, according to the law, the low beam shape formed by the miniature lamp module of the present embodiment includes a central region a, a widened region B, a iii-region C, a 50L dark region D, and a cut-off line E, and the widened region B partially overlaps with the central region a for increasing the low beam irradiation range.

Referring to fig. 3 and 4, the miniature car light module of the present embodiment includes a light source 1, a reflection structure and a lens 3, wherein light emitted from the light source 1 is reflected by the reflection structure and then enters the lens 3, and is refracted by the lens 3 and then exits from a light exit surface 3a of the lens 3, so as to form an illumination light shape. Herein, the side closer to the light source 1 and the side farther from the lens 3 is defined as the rear side, and the side closer to the lens 3 and the side farther from the light source 1 is defined as the front side. In this embodiment, the reflective structure includes a first reflective surface 2a and a second reflective surface 2B, the first reflective surface 2a is used to form the central area a light shape, and the second reflective surface 2B is used to form the extended area B light shape. Referring to fig. 5, a first part of light beams emitted by the light source 1 are emitted to the first reflecting surface 2a, are emitted to the lens 3 after being reflected by the first reflecting surface 2a, and are emitted from the light emitting surface 3a of the lens 3 after being refracted by the lens 3, so as to form a central area a light shape. Referring to fig. 6, a second part of the light emitted from the light source 1 is emitted to the second reflecting surface 2B, reflected by the second reflecting surface 2B, emitted to the lens 3, and refracted by the lens 3 and emitted from the light emitting surface 3a of the lens 3, so as to form a light shape of the widened region B. Under the same luminous flux, the smaller the light diffusion angle is, the more the light is converged, and the brightness of the formed light shape is higher. In this embodiment, the light diffusion angle reflected by the first reflection surface 2a is smaller than the light diffusion angle reflected by the second reflection surface 2 b. This effectively increases the brightness of the light pattern in the central area a formed by the first reflecting surface 2a, thereby improving the road surface visibility for the driver. In this embodiment, the light source 1 is a laser light source, and the luminous flux per unit area of the laser light source can reach 1200lm/mm²And on the left and right sides, the light shape brightness required by the regulations can be achieved only by one laser light source, the light emitting area is very small, and therefore, the size of an optical element (a reflecting structure and a lens 3) matched with the laser light source can be very small, so that a miniature car lamp module with the size is formed, the structure is compact and small, the size of the whole car lamp module is greatly reduced, and the corresponding manufacturing cost is also greatly reduced.

Referring to fig. 4, in the present embodiment, a step may be formed between the first reflective surface 2a and the second reflective surface 2b, and the first reflective surface 2a and the second reflective surface 2b may be connected to each other, and the step may be formed between the first reflective surface 2a and the second reflective surface 2b through a connection surface. Therefore, the first reflecting surface 2a and the second reflecting surface 2b are not on the same smooth surface, and the first reflecting surface 2a and the second reflecting surface 2b are located on different ellipsoidal surfaces, so that different light diffusion angles can be formed after the first reflecting surface 2a and the second reflecting surface 2b reflect light, and the light diffusion angle reflected by the first reflecting surface 2a is smaller than that reflected by the second reflecting surface 2 b. The first reflecting surface 2a and the second reflecting surface 2b may be connected without forming a step, but the curvature of the first reflecting surface 2a is larger than that of the second reflecting surface 2b, so that the light diffusion angle reflected by the first reflecting surface 2a can be smaller than that reflected by the second reflecting surface 2 b. Of course, the curvatures of the first reflective surface 2a and the second reflective surface 2b may be the same, and such a reflective structure is easier to process on the same smooth surface, but the brightness of the light shape formed in the central area a is relatively low.

Referring to fig. 3 and 4, in the present embodiment, the reflective structure further includes a third reflective surface 2C and a fourth reflective surface 2d, and the third reflective surface 2C and the fourth reflective surface 2d are used to form a iii-block C light shape together. Referring to fig. 7, a third part of the light emitted from the light source 1 is emitted to the third reflective surface 2C, reflected by the third reflective surface 2C and then emitted to the fourth reflective surface 2d, reflected by the fourth reflective surface 2d and then emitted to the lens 3, and refracted by the lens 3 and then emitted from the light emitting surface 3a of the lens 3, thereby forming a zone iii C light shape. The fourth reflective surface 2d may be any one of a flat surface, an inwardly concave curved surface, and an outwardly convex curved surface, as long as it can form a iii-zone C light shape meeting the requirements of the regulations.

Referring to fig. 8, 9 and 10, preferably, the first reflection surface 2a, the second reflection surface 2b and the third reflection surface 2c are connected in sequence from back to front to form the reflection mirror 2, and the engagement surface between the first reflection surface 2a and the second reflection surface 2b is such that a step is formed between the first reflection surface 2a and the second reflection surface 2 b. Because the light reflected by the third reflecting surface 2c needs to be reflected by the fourth reflecting surface 2d and then to the lens 3, and the light reflected by the first reflecting surface 2a and the second reflecting surface 2b directly reaches the lens 3, the third reflecting surface 2c and the first reflecting surface 2a, and the third reflecting surface 2c and the second reflecting surface 2b are located on different ellipsoidal surfaces.

Referring to fig. 10 and 11, in the present embodiment, a reflector connecting portion 21 is disposed at a front end of the reflector 2, a lens connecting portion 31 is disposed at a rear end of the lens 3, and the reflector connecting portion 21 is connected to the lens connecting portion 31 in a matching manner, so that the reflector 2 and the lens 3 are relatively fixed. Therefore, the reflector 2 and the lens 3 are assembled into an integral structure through the matching connection of the reflector connecting part 21 and the lens connecting part 31, so that the relative positions of the reflector 2 and the lens 3 are directly determined, and the reflector 2 and the lens 3 are directly positioned. Therefore, in the miniature car light module of the present embodiment, when the reflector 2 and the lens 3 are assembled on the circuit board 4 and the heat sink 5, because the reflector 2 and the lens 3 have a fixed assembling and positioning relationship, a positioning error between the reflector 2 and the lens 3 due to the assembly with the circuit board 4 and the heat sink 5 is avoided, that is, a plurality of assembling errors are reduced, so that the positioning accuracy and the installation reliability of the reflector 2 and the lens 3 can be ensured, and the miniature car light module has high optical system accuracy. It should be noted that, in the prior art, there is an implementation manner in which the mirror and the lens holder are integrated and then directly positioned with the lens, and the mirror and the lens holder of this implementation manner are integrated, so that the structure is very complex, and the mirror is used as an important optical element, so that the processing accuracy of the mirror can be guaranteed to ensure a high accuracy of the optical system. Compare prior art, speculum 2 and the lens 3 direct positioning connection in this embodiment, simple structure, speculum 2 processing is easy moreover, and optical system precision is higher.

The matching connection mode of the reflector connection part 21 and the lens connection part 31 can be any one of threaded connection, riveting, gluing and welding. Preferably, in the present embodiment, the reflector connecting portion 21 and the lens connecting portion 31 are connected in a riveting manner, and have the advantages of convenient operation and accurate positioning.

Specifically, referring to fig. 11 and 12, the reflector connecting portion 21 is provided with a first connecting hole 22, the lens connecting portion 31 is provided with a first connecting pin 32, and the first connecting pin 32 is inserted into and matched with the first connecting hole 22. During assembly, the reflector connecting part 21 is butted with the lens connecting part 31, the first connecting pin 32 is inserted into the first connecting hole 22 and can be riveted with the first connecting hole 22, and positioning connection between the reflector connecting part 21 and the lens connecting part 31, namely positioning connection between the reflector 2 and the lens 3 is realized. Preferably, the reflector connecting portion 21 may be provided with two first connecting holes 22, and correspondingly, the lens connecting portion 31 is provided with two first connecting pins 32 respectively engaged with the two first connecting holes 22. One of the two first connection holes 22 is a round hole or a waist-shaped hole with the diameter matched with that of the corresponding first connection pin 32, and is used for positioning the relative position of the reflector 2 and the lens 3; the other first connection hole 22 is a circular hole having a diameter larger than that of the corresponding first connection pin 32 for accomplishing the riveting of the mirror connection part 21 and the lens connection part 31. Preferably, one mirror connecting portion 21 is provided above and below the front end of the mirror 2, and two first connecting holes 22 are provided on each mirror connecting portion 21, preferably, two first connecting holes 22 at opposite corners are used as positioning holes for positioning, and in order to avoid over-positioning, one of which is a round hole and the other is a waist-shaped hole, correspondingly, a lens connecting part 31 is respectively arranged at the upper part and the lower part of the rear end of the lens 3, when assembling, the upper mirror connecting portion 21 is butted against the upper lens connecting portion 31, the lower mirror connecting portion 21 is butted against the lower lens connecting portion 31, therefore, the relative positions of the reflector 2 and the lens 3 are jointly limited by the two pairs of connected reflector connecting parts 21 and lens connecting parts 31, and the positioning accuracy and the assembling stability of the reflector 2 and the lens 3 can be ensured.

Referring to fig. 11, 13 and 14, the light source 1 is disposed on the circuit board 4, the circuit board 4 is provided with a positioning hole 41, the rear end of the reflector 2 is provided with a positioning pin 23, and the positioning pin 23 is inserted into and matched with the positioning hole 41. When the reflector 2 is assembled on the circuit board 4, the relative position of the reflector 2 and the circuit board 4 can be limited through the insertion fit of the positioning pin 23 and the positioning hole 41, and the accurate positioning between the reflector 2 and the circuit board 4 is realized. Therefore, the reflector 2 and the circuit board 4 are assembled together through the insertion fit connection of the positioning pin 23 and the positioning hole 41, the relative position of the reflector 2 and the circuit board 4 is determined, and the reflector 2 and the circuit board 4 are directly positioned. Because the lens 3 is also assembled with the reflector 2 into an integral structure and is directly positioned, the miniature car lamp module of the embodiment can ensure the precision of the optical system only by ensuring the positioning accuracy between the lens 3 and the reflector 2 and between the reflector 2 and the circuit board 4, thereby reducing multiple assembly errors and ensuring that the precise assembly is simpler and more convenient. Preferably, the circuit board 4 may be provided with two positioning holes 41, and correspondingly, the rear end of the reflector 2 is provided with two positioning pins 23, and the two positioning pins 23 are respectively in insertion fit with the two positioning holes 41, so that the positioning accuracy and the assembling stability between the reflector 2 and the circuit board 4 can be improved.

In this embodiment, the circuit board 4 is connected to and positioned on the heat sink 5. Referring to fig. 11, the reflector 2, the circuit board 4 and the heat sink 5 may be fixedly connected by mounting screws 6 (holes through which the mounting screws 6 pass on the circuit board 4 are not shown).

Referring to fig. 10 and 11, preferably, the miniature vehicle lamp module of the present embodiment further includes a light shield 7, the light shield 7 is connected to the lens 3, the lens 3 is accommodated in the light shield 7, only the light emitting surface 3a is exposed, and the light can be prevented from being emitted from the side surface of the lens 3 by the light shield 7. The connection mode of the light shield 7 and the lens 3 can be any one of threaded connection, riveting, gluing and welding. Preferably, in this embodiment, the light shield 7 is connected to the lens 3 by riveting, which has the advantages of convenient operation and accurate positioning.

Specifically, referring to fig. 10 and 11, the light shield 7 is provided with a second connection hole 71, the lens connection portion 31 of the lens 3 is provided with a second connection pin 33, and the second connection pin 33 is in inserted fit with the second connection hole 71. During assembly, the light shield 7 is sleeved on the lens 3, and the second connecting pin 33 is inserted into the second connecting hole 71 and can be riveted with the second connecting hole 71, so that the positioning connection between the light shield 7 and the lens 3 is realized. Preferably, two second connection holes 71 may be formed in the light shield 7, and correspondingly, two second connection pins 33 respectively inserted into and engaged with the two second connection holes 71 are formed on the lens connection portion 31. One second connecting hole 71 of the two second connecting holes 71 is a round hole or a waist-shaped hole with the diameter matched with that of the corresponding second connecting pin 33, and is used for positioning the relative position of the light shield 7 and the lens 3; the other second connecting hole 71 is a circular hole having a diameter larger than that of the corresponding second connecting pin 33, and is used for riveting the light shield 7 and the lens 3. Preferably, one lens connecting portion 31 is provided at the upper and lower portions of the rear end corresponding to the lens 3, two second connecting pins 33 are provided at each lens connecting portion 31, two second connecting holes 71 are provided at the upper and lower portions of the rear end of the light shielding cover 7, preferably, two diagonal second connecting holes 71 are used as positioning holes for positioning, and one of the two second connecting holes is a round hole and the other is a waist-shaped hole to avoid over-positioning, so that the positioning accuracy and the assembling stability of the light shielding cover 7 and the lens 3 can be ensured.

Referring to fig. 13 and 14, in the present embodiment, the fourth reflecting surface 2d is preferably an integral structure provided integrally with the reflector 2. Therefore, the first reflecting surface 2a, the second reflecting surface 2b, the third reflecting surface 2c and the fourth reflecting surface 2d in the reflecting structure have relatively fixed position relation, errors caused by the assembling relation between the reflecting mirror 2 and the lens 3 can be avoided, and the precision of the optical system can be ensured only by ensuring the assembling precision between the reflecting mirror 2 and the lens 3. Preferably, the fourth reflecting surface 2d may be provided on the mirror connecting portion 21, at which the front end of the mirror 2 is located downward.

Referring to fig. 15 and 16, the miniature vehicle lamp module of the present embodiment further includes a cut-off line structure 8 and a shielding block 9. The cut-off line structure 8 is used for forming a cut-off line E of a light shape, light emitted to the first reflecting surface 2a from the light source 1 is reflected by the first reflecting surface 2a, is cut off by the cut-off line structure 8, then is emitted to the lens 3, is refracted by the lens 3, and then is emitted from the light emitting surface 3a of the lens 3, so that the light shape of a central area A with the cut-off line E is formed; the light emitted from the light source 1 to the second reflecting surface 2B is reflected by the second reflecting surface 2B, then is cut by the cut-off line structure 8, and then is emitted to the lens 3, and is refracted by the lens 3 and then is emitted from the light emitting surface 3a of the lens 3, so as to form a light shape of the widening area B. The shielding block 9 is used for controlling the brightness of the 50L dark area D of the light shape, and the shielding block 9 can shield part of light rays before being cut off by the cut-off line structure 8, so that the illumination of the 50L dark area D of the light shape is reduced to a value meeting the requirements of regulations, and the brightness of the 50L dark area D of the light shape is controlled. The stopper 9 may be a cylindrical or a slope-shaped protrusion. In the prior art, the blocking block mostly adopts a convex point or a rectangular block, but the convex point can make a 50L dark area be a dark point which is more abrupt; the rectangular block can enable another inflection point except for the original inflection point to appear near the cut-off line, so that when the inflection point is captured in the light distribution, the inflection point is captured by mistake to influence the light distribution effect. Therefore, the shielding block 9 is cylindrical or convex, so as to avoid the phenomenon of abrupt light shape or false inflection point capture.

In this embodiment, the cut-off line structure 8 and the reflector 2 may be an integral structure, and the shielding block 9 and the reflector 2 may also be an integral structure. Therefore, the cut-off line structure 8, the shielding block 9 and the reflector 2 have relatively fixed position relation, no error is generated due to the assembly relation between the reflector 2 and the lens 3, and the precision of the optical system can be ensured only by ensuring the assembly precision between the reflector 2 and the lens 3. Preferably, the cut-off line structure 8 and the blocking piece 9 are integrally formed with the reflector 2, and both the cut-off line structure 8 and the blocking piece 9 can be disposed on the reflector connecting portion 21 below the front end of the reflector 2.

Preferably, the fourth reflective surface 2d, the cut-off structure 8 and the blocking piece 9 are integrally formed with the reflector 2. Then, the positional relationships of the first reflecting surface 2a, the second reflecting surface 2b, the third reflecting surface 2c, the fourth reflecting surface 2d, the cut-off line structure 8 and the blocking piece 9 are all fixed, so that no error is generated due to the assembling relationship between the reflecting mirror 2 and the lens 3, and the precision of the optical system can be ensured only by ensuring the assembling precision between the reflecting mirror 2 and the lens 3.

The miniature car lamp module of this embodiment can realize the low beam, also can realize the distance light. When the miniature vehicle lamp module is applied to main low beam, the shape of the cut-off line structure 8 is the same as the shape of the bright-dark cut-off line of the low beam, which has a step difference (see fig. 16). When the miniature vehicle lamp module is applied to assist the near light, the shape of the cut-off line structure 8 can be smooth and has no level difference, and can also be the same as the shape of a bright and dark cut-off line of the near light. When the exterior of the miniature vehicle lamp module is applied to high beam, the shape of the cut-off line structure 8 may be set according to the shape of the lower boundary of the high beam shape.

In this embodiment, the curvature radius of the lens 3 is R, the height of the lens 3 is H, and the following are satisfied: h is less than or equal to 4R/3, the height H can be realized by cutting the upper end and the lower end of the existing lens and only reserving the thicker part in the middle, so that the size of the lens 3 can be reduced on the premise of ensuring the lighting effect of the lens 3, the size of the whole car lamp module is greatly reduced, the miniature car lamp module is formed, and the corresponding manufacturing cost is also greatly reduced. If the size of the optical element of the car lamp module in the prior art is simply reduced in proportion, the reduced car lamp module has the defects of unsatisfactory light shape effect, poor light effect and incapability of providing a good lighting effect for a driver. In the present embodiment, the size of the lens 3 is not simply scaled down, but the upper and lower ends of the lens are cut off based on the existing lens, and the height of the lens 3 is reduced under the same curvature, so that the light efficiency of the lens 3 is ensured, and the size of the lens 3 is reduced. Meanwhile, the thickness of the reserved middle part of the lens 3 is thick, so that the serious dispersion caused by the excessively thin thickness of the lens is weakened, and the dispersion phenomenon can be effectively improved. In practical applications, the cutting sizes of the upper and lower ends of the existing lens may be the same, and the heights of the obtained lens 3 extending from the center to the upper and lower ends are both H/2, and of course, the cutting sizes of the upper and lower ends of the existing lens may also be different. The left and right width of the lens can be made long without affecting dispersion, so the forward projection of the lens 3 in this embodiment is a horizontally-oriented rectangle.

The miniature car light module of this embodiment, its light source 1 adopts laser source, is equipped with above-mentioned optical assembly structure, has reduced the volume of car light module greatly. The luminous flux of the laser light source per unit area can reach 1200lm/mm²On the left and right sides, only one laser light source is needed to achieve the light shape brightness required by the regulations, the light emitting area is small, therefore, the size of the reflector 2 can be small, and correspondingly, the size of the lens 3 can be small. The focal length of the reflector 2 in this embodiment can be madeTo 10mm-20mm, preferably 10mm, whereas the prior art mirrors can only achieve focal lengths of 30mm-40 mm. The lens 3 in this embodiment can: the upper and lower height H is 5mm-15mm, preferably 10 mm; the width is 15mm-35mm, preferably 30 mm. In order to make as much light reflected by the mirror 2 incident on the lens 3 as possible, the focal length of the lens 3 is reduced accordingly. The focal length of the lens 3 in the embodiment can be 10mm-20mm, while the focal length of the lens in the prior art can only be 30mm-40 mm. Therefore, in the embodiment, the length of the whole car lamp module in the front-back direction is greatly reduced, the length can be about 80mm, and the length of the car lamp module in the prior art is about 130mm-150 mm; similarly, the width and height of the whole vehicle lamp module are reduced, and the width is about 35mm and the height is about 40mm, while the width of the vehicle lamp module in the prior art is about 90mm-100mm and the height is about 90mm-100 mm. Compared with the prior art, the volume of the whole car lamp module is greatly reduced, and the car lamp module belongs to a size mini car lamp module.

From this, the miniature car light module of this embodiment is because of adopting the laser light source that luminous area is little and unit area luminous intensity is high for the size and the focus of speculum 2 and lens 3 all reduce greatly, compact structure, small and exquisite, make the volume of whole car light module reduce greatly, corresponding manufacturing cost is greatly reduced also. Have good commercial value prospect simultaneously, because miniature car lamp module very adapts to the figurative development trend of vehicle, can make current headlight disappear even, arrange the car lamp module in unobtrusive position in order to be used for the illumination of vehicle, for example positions such as bumper, grid, help further promoting the pleasing to the eye degree of car appearance.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.