Projection type head lamp
阅读说明:本技术 投射式头灯 (Projection type head lamp ) 是由 施明智 于 2019-04-26 设计创作,主要内容包括:一种投射式头灯,包含反射镜、遮光板、反射件、透镜,及发光单元。该反射镜包括第一反射面。该遮光板位于该反射镜内,并包括朝后的第二反射面。该反射件位于该遮光板后方,并包括朝前的第三反射面。该发光单元位于该遮光板后方,该发光单元发出的部分光线能被该反射镜的第一反射面朝该遮光板的第二反射面反射,再被该第二反射面朝该反射件的第三反射面反射,再被该第三反射面朝前且朝上反射并通过该透镜向前射出。通过第一反射面、第二反射面与第三反射面搭配来补强暗区光线,补光效果佳,且方便因应灯壳种类作光学调整。(A projection type head lamp includes a reflector, a light shielding plate, a reflector, a lens, and a light emitting unit. The reflector includes a first reflective surface. The light shielding plate is positioned in the reflector and comprises a second reflecting surface facing backwards. The reflector is positioned behind the shading plate and comprises a third reflecting surface facing forwards. The light-emitting unit is positioned behind the shading plate, and partial light rays emitted by the light-emitting unit can be reflected by the first reflecting surface of the reflector towards the second reflecting surface of the shading plate, reflected by the second reflecting surface towards the third reflecting surface of the reflecting piece, reflected by the third reflecting surface forwards and upwards and emitted forwards through the lens. The first reflecting surface, the second reflecting surface and the third reflecting surface are matched to reinforce light in a dark area, so that the light supplementing effect is good, and optical adjustment according to the type of the lamp shell is convenient.)
1. A projector headlamp comprising: define out installation space and include the speculum of first plane of reflection, be located this installation space and include the light screen of the second plane of reflection backward, be located this speculum and the lens in light screen the place ahead to and be located this installation space and be located the luminescence unit at this light screen rear, its characterized in that: the projective head lamp also comprises a reflecting piece which is positioned in the mounting space and behind the shading plate, the reflecting piece comprises a third reflecting surface facing forwards, part of light rays emitted by the light-emitting unit can be reflected by the first reflecting surface of the reflecting mirror towards the second reflecting surface of the shading plate, the light rays are reflected by the second reflecting surface towards the third reflecting surface of the reflecting piece, and then the light rays are reflected by the third reflecting surface forwards and upwards and are emitted forwards through the lens.
2. The projector headlamp as defined in claim 1, wherein: the projection head lamp also comprises a heat dissipation part, the heat dissipation part comprises a substrate extending into the installation space and a plurality of heat dissipation fins connected with the substrate, and the reflection part is integrally connected with the front side of the substrate.
3. The projector headlamp as defined in claim 2, wherein: the third reflecting surface of the reflecting piece is formed on the substrate in a vacuum coating mode.
4. The projector headlamp as defined in claim 1, wherein: the second reflecting surface of the light shading plate is provided with a plurality of diffusing surface parts which are arranged left and right and can diffuse light left and right.
5. The projector headlamp as defined in claim 1, wherein: the third reflecting surface of the reflecting piece is provided with a plurality of diffusion structures which are arranged left and right and can diffuse light left and right.
6. The projector headlamp as defined in claim 4, wherein: the third reflecting surface of the reflecting piece is provided with a plurality of diffusion structures which are arranged left and right and can diffuse light left and right, the surface of each diffusion structure is forward arc-bent or backward arc-bent, and the surface of each diffusion surface part is forward arc-bent or backward arc-bent.
7. The projector headlamp as defined in claim 1, wherein: the lens is a convex lens, the focus of the lens is positioned behind the lens, and the position of the shading plate is positioned behind the focus.
8. The projector headlamp as defined in claim 1, wherein: the reflector comprises an upper mirror part and a lower mirror part which is matched with the upper mirror part to define the installation space, the first reflecting surface is provided with an upper reflecting surface part formed on the upper mirror part and a lower reflecting surface part formed on the lower mirror part, the light-emitting unit comprises a first light-emitting part facing the upper mirror part and a second light-emitting part facing the lower mirror part, the first light-emitting part emits light upwards, partial light is reflected by the upper reflecting surface part to the second reflecting surface, the second light-emitting part emits light downwards, partial light is reflected by the lower reflecting surface part, and the light is emitted out towards the lens after being reflected by the light shielding plate.
Technical Field
The present invention relates to a head lamp, and more particularly, to a projector type head lamp.
Background
A projector Headlamp (PES) mainly includes a light source, a reflector, a light shielding plate, and a lens. Projection headlamps with light-emitting diodes (LEDs) as the light source can be moved in an electrically controlled manner, or else can be static or unmoved. The static light shading plate is mainly used for projecting the required far light or near light shape by matching with the switching of a far light source and a near light source through the proper design of the structure. Generally, a region with insufficient light is located above the cutoff line, which is called a dark region, and the light intensity in the dark region must reach a certain basic brightness to meet the regulations.
Most of the projection headlamps project light from a light source to a dark area through a lens after the light is reflected twice by a reflector and a light shielding plate. Although the function of compensating light in a dark area can be achieved, in practice, it is found that a headlamp module is formed by mounting a headlamp in a lamp housing, and then the whole headlamp module is mounted on a vehicle body. When the projection type headlamp is applied to the lamp shell with smooth shell wall, the light effect of the dark area is good, but when the projection type headlamp is applied to the lamp shell with more three-dimensional fluctuation structures, part of light can be deflected towards a non-preset direction by the lamp shell, the whole light form projected by the headlamp is damaged, and the light effect of the dark area is poor. In order to improve this problem, there is a method of improving the arrangement position, orientation angle and structure of the reflector and the light shielding plate, so as to first finely adjust the light path in the headlamp. Therefore, the applicant researches and develops another headlamp, and the good light-shading effect of the dark area can be maintained no matter what structure of the lamp housing is adopted.
Disclosure of Invention
The object of the invention is to provide a projector headlamp which overcomes the disadvantages of the background art.
The invention relates to a projection type head lamp, which comprises a reflector, a shading plate, a reflector, a lens positioned in front of the reflector and the shading plate, and a light-emitting unit.
The reflector defines an installation space and includes a first reflection surface. The light shielding plate is positioned in the mounting space and comprises a second reflecting surface facing backwards. The reflecting piece is positioned in the mounting space and behind the shading plate and comprises a third forward reflecting surface. The light-emitting unit is positioned in the mounting space and behind the light shielding plate, part of light rays emitted by the light-emitting unit can be reflected by the first reflecting surface of the reflector towards the second reflecting surface of the light shielding plate, the light rays are reflected by the second reflecting surface towards the third reflecting surface of the reflecting piece, and then the light rays are reflected by the third reflecting surface forwards and upwards and are emitted forwards through the lens.
The projection head lamp also comprises a heat dissipation part, wherein the heat dissipation part comprises a substrate extending into the installation space and a plurality of heat dissipation fins connected with the substrate, and the reflection part is integrally connected with the front side of the substrate.
In the projection headlamp of the present invention, the third reflecting surface of the reflector is formed on the substrate by vacuum deposition.
The second reflecting surface of the shading plate is provided with a plurality of diffusion surface parts which are arranged left and right and can diffuse light left and right.
The projection head lamp of the invention has a plurality of diffusion structures which are arranged left and right and can diffuse light left and right on the third reflection surface of the reflection member.
The projection head lamp of the invention is characterized in that a plurality of diffusion structures which are arranged left and right and can diffuse light left and right are formed on the third reflecting surface of the reflecting piece, the surface of each diffusion structure is forward arc-bent or backward arc-bent, and the surface of each diffusion surface part is forward arc-bent or backward arc-bent.
The projection type headlamp of the invention has the advantages that the lens is a convex lens, one focus of the lens is positioned behind the lens, and the position of the shading plate is positioned behind the focus.
The invention relates to a projection type head lamp, wherein the reflector comprises an upper mirror part and a lower mirror part which is matched with the upper mirror part to define an installation space, the first reflecting surface is provided with an upper reflecting surface part formed on the upper mirror part and a lower reflecting surface part formed on the lower mirror part, the light-emitting unit comprises a first light-emitting part facing to the upper mirror part and a second light-emitting part facing to the lower mirror part, the first light-emitting part emits light upwards, part of light is reflected by the upper reflecting surface part to the second reflecting surface, the second light-emitting part emits light downwards, part of light is reflected by the lower reflecting surface part, and then the light is reflected by the light shielding plate and then emitted out towards the lens.
The invention has the beneficial effects that: the first reflecting surface, the second reflecting surface and the third reflecting surface are used for reinforcing light rays in a dark area, the light supplementing effect is good, the application is flexible, and optical adjustment can be conveniently carried out according to the types of the lamp shells.
Drawings
Other features and effects of the present invention will become apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which:
fig. 1 is a perspective view illustrating a first embodiment of a projector headlamp and a lamp housing according to the present invention;
FIG. 2 is an exploded perspective view of the first embodiment;
FIG. 3 is a combined cross-sectional view of the first embodiment;
FIG. 4 is a sectional view similar to FIG. 3, illustrating the ray paths when the first embodiment projects a near light pattern;
FIG. 5 is a combined cross-sectional view similar to FIG. 3, illustrating the light path of the first embodiment for reinforcing the light in the dark area, and the light path of a second light emitting element;
FIG. 6 is a rear perspective view illustrating another aspect of a shutter plate of the first embodiment;
FIG. 7 is a perspective view illustrating a reflector and the visor of a second embodiment of the projector headlamp of the present invention;
fig. 8 is a perspective view illustrating the reflector and the visor of a third embodiment of the projector headlamp of the present invention.
Detailed Description
Before the present invention is described in detail, it should be noted that in the following description, like elements are represented by like reference numerals.
Referring to fig. 1, 2 and 3, a first embodiment of the projector headlamp of the present invention is adapted to be mounted in a lamp housing 1, where the lamp housing 1 includes a housing wall 11, and a light-transmitting wall 12 mounted in the housing wall 11 and capable of emitting light of the projector headlamp forward. The wall 11 has a plurality of turning portions 111, so that the lamp housing 1 has a three-dimensional shape. The projector headlamp of the first embodiment includes a reflector 2, a
The reflector 2 includes an upper mirror portion 21, a lower mirror portion 22 cooperating with the upper mirror portion 21 to define a mounting space 20, and a first reflecting surface 23 formed by the upper mirror portion 21 and the lower mirror portion 22. The first reflecting surface 23 has an upper reflecting surface 231 formed on the upper mirror portion 21 and a lower reflecting surface 232 formed on the lower mirror portion 22. The lower reflecting surface 232 and the upper reflecting surface 231 are preferably elliptical reflecting surfaces.
The
The
The
The lens 6 is located in front of the reflector 2 and the
Referring to fig. 4, when the present invention is used, a part of light (such as the light path a in fig. 4) emitted from the first light-emitting element 71 is reflected by the upper reflecting surface 231 of the first reflecting surface 23 towards the front lower direction, and is emitted forward through the lens 6; part of the light (as the light path B in fig. 4) is reflected by the upper reflecting surface 231 toward the
Referring to fig. 5, on the other hand, a part of the light emitted from the second light emitting element 72 (as the light path C in fig. 5) is reflected by the lower reflecting surface 232 toward the front and upper direction, and then reflected by the
It should be noted that a part of the light emitted from the first light-emitting element 71 (as the light path D in fig. 5) can be reflected by the upper reflecting surface 231 of the first reflecting surface 23 toward the second reflecting
Therefore, the light for reinforcing the dark area of the present invention is formed by matching the first reflection surface 23, the
The present invention is not limited to headlamps having both a high beam and a low beam, and is not limited to high beams and low beams. Other headlamps that require reinforcement of the projected area light can be used with the triple reflection design of the present invention.
It should be noted that a focus 61 of the lens 6 of the present embodiment is located behind the lens 6, and the
Referring to fig. 6, in another aspect of the
Referring to fig. 7, a second embodiment of the projector headlamp of the present invention has substantially the same structure as the first embodiment, except that the
Referring to fig. 8, a third embodiment of the projector headlamp of the present invention is substantially the same as the first embodiment, except that the surface of the diffusing surface 311 of the second reflecting
The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and the invention is still within the scope of the present invention by simple equivalent changes and modifications made according to the claims and the contents of the specification.
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