阅读说明：本技术 车灯光学元件、车灯模组、车辆前照灯及车辆 (Car light optical element, car light module, vehicle headlamp and vehicle ) 是由 张大攀 仇智平 祝贺 桑文慧 于 2019-08-22 设计创作，主要内容包括：本发明涉及车辆照明装置,公开了一种车灯光学元件,包括依次相连的入光部(11)、通光部(12)和出光部(13),所述入光部(11)包括多个沿左右方向依次连接的入光面(15),所述入光面(15)为沿光轴方向向后凸出的曲面,所述出光面(15)为沿光轴方向向前凸出的曲面。此外,本发明还公开了一种车灯模组、车辆前照灯和车辆。本发明的车灯光学元件不仅体积较小,而且,光学精度高、光型准确、安装方便且成本较低。(The invention relates to a vehicle lighting device, and discloses a vehicle lamp optical element, which comprises an incident part (11), a light-passing part (12) and a light-emitting part (13) which are sequentially connected, wherein the incident part (11) comprises a plurality of incident surfaces (15) which are sequentially connected along the left-right direction, the incident surfaces (15) are curved surfaces which are convex backwards along the optical axis direction, and the light-emitting surfaces (15) are curved surfaces which are convex forwards along the optical axis direction. In addition, the invention also discloses a car lamp module, a car headlamp and a car. The optical element of the vehicle lamp has the advantages of small volume, high optical precision, accurate light shape, convenience in installation and low cost.)

1. The optical element for the car lamp is characterized by comprising a light inlet part (11), a light passing part (12) and a light outlet part (13) which are sequentially connected, wherein the light inlet part (11) comprises a plurality of light inlet surfaces (15) which are sequentially connected in the left-right direction, the light inlet surfaces (15) are curved surfaces which are convex backwards, and the light outlet surfaces (15) are curved surfaces which are convex forwards.

2. The optical element for a vehicular lamp according to claim 1, wherein a contour of a front end surface of the light-passing portion (12) is located within a contour of a rear end portion of the light-exiting portion (13) so as to be able to form the mounting surface (16) on the rear end surface of the light-exiting portion (13).

3. The optical element for a vehicular lamp according to claim 1, wherein the left and right side surfaces of the light-passing portion (12) extend forward in the optical axis direction and come closer to each other in the direction closer to the optical axis.

4. The optical element for a vehicle lamp according to claim 3, wherein the height of the longitudinal section of the upper side and the lower side of the light-passing portion (12) in the optical axis direction is gradually increased.

5. The optical element for a vehicular lamp according to claim 1, wherein peripheral side surfaces of the light exit portion (13) are closed from back to front in a direction approaching the optical axis to be capable of totally reflecting light to the side surfaces of the light passing portion (12).

6. Automotive light optical element according to any one of claims 1 to 5, characterized in that the surface of the clear portion (12) is provided with a matt coating or a light blocking member.

7. The vehicular lamp optical element according to any one of claims 1 to 5, characterized in that the vehicular lamp optical element is integrally molded.

8. A car light module, including support (3), circuit board (4), radiator (5) that are equipped with light source (2), characterized by, still include according to car light optical element (1) of any one of claims 1 to 7, the portion (12) that leads to light of car light optical element (1) sets up the holding intracavity that support (3) formed, the one end of support (3) in proper order with circuit board (4), radiator (5) fixed connection, the other end with go out light portion (13) the installation face (16) and be connected.

9. The vehicle lamp module according to claim 8, wherein the bracket (6) is of an integral structure or a detachable structure to form a receiving cavity for receiving the light-passing portion (3).

10. The car light module according to claim 8, characterized in that the car light module further comprises a light adjusting mechanism (6), the light adjusting mechanism comprises a first ball screw (61), a second ball screw (62), a third ball screw (63), a fixing frame (65) and ball nuts (64) respectively corresponding to the ball screws, the fixing frame (65) is connected with the heat sink (5) through the ball screws, wherein a ball connecting line of the first ball screw (61) and the second ball screw (62) extends along the left-right direction, and a ball connecting line of the second ball screw (62) and the third ball screw (63) extends along the up-down direction.

11. A vehicle headlamp comprising at least one lamp module according to any one of claims 8 to 10, wherein the lamp modules are arranged in a longitudinal, transverse, or oblique arrangement.

12. A vehicle characterized by comprising the vehicle headlamp recited in claim 11.

Technical Field

The present invention relates to a vehicle lighting device, and particularly to a lamp optical element, and further relates to a lamp module, a vehicle headlamp, and a vehicle.

Background

The matrix type L ED headlamp is one of the directions for the future development of the automobile lamp, the light source of the matrix type L ED high beam consists of a plurality of L EDs, the L EDs are arranged in a certain mode to form an array pattern, and the matrix type L ED headlamp can extinguish L EDs of a corresponding area according to the position of a vehicle and a pedestrian in the field of view in front of the vehicle so as to avoid the glare of the pedestrian or the driver.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide an optical element for a vehicle lamp, which not only has a small volume, but also has high optical precision, accurate light shape, convenient installation and low cost.

The second technical problem to be solved by the invention is to provide a car lamp module, which not only has smaller volume, but also has high optical precision, accurate light type and simple dimming; the structure has the advantages of fewer parts, simple installation and lower manufacturing and process cost.

A third technical problem to be solved by the present invention is to provide a vehicle headlamp having a small volume; the optical precision is high, the light type is accurate, and the light modulation is simple; the light type superposition device has the advantages of fewer constituent parts, simplicity in installation, lower manufacturing and process cost and flexibility and diversity in light type superposition modes.

A fourth technical problem to be solved by the present invention is to provide a vehicle, a vehicle headlamp of which is small in volume; the optical precision is high, the light type is accurate, and the light modulation is simple; the structure has the advantages of fewer parts, simple installation and lower manufacturing and process cost.

In order to achieve the above object, a first aspect of the present invention provides an optical element for a vehicle lamp, including an incident portion, a light-passing portion and a light-emitting portion, which are sequentially connected, where the incident portion includes a plurality of incident surfaces sequentially connected in a left-right direction, the incident surfaces are curved surfaces protruding backward, and the light-emitting surfaces are curved surfaces protruding forward.

Preferably, the contour of the front end face of the light-passing portion is located within the contour of the rear end portion of the light-exiting portion so as to be able to form the mounting surface on the rear end face of the light-exiting portion.

Preferably, the left side surface and the right side surface of the light-passing portion extend forward along the optical axis direction and then approach to the direction close to the optical axis.

As a preferable configuration of the present invention, the height of the longitudinal section of the upper side and the lower side of the light-passing portion in the optical axis direction is gradually increased.

In a preferred configuration of the present invention, the peripheral side surfaces of the light exit portion are close to each other in a direction approaching the optical axis from back to front, so that the light can be totally reflected to the side surfaces of the light passing portion.

Preferably, the surface of the light-passing part is provided with a light extinction coating or a light-shielding part.

Specifically, the optical element of the vehicle lamp is integrally formed.

A second aspect of the present invention provides a vehicle lamp module, including a bracket, a circuit board provided with a light source, a heat sink, and a vehicle lamp optical element according to any one of the first aspect, wherein a light-passing portion of the vehicle lamp optical element is disposed in an accommodating cavity formed by the bracket, one end of the bracket is sequentially fixedly connected to the circuit board and the heat sink, and the other end of the bracket is connected to an installation surface of the light-emitting portion.

Preferably, the bracket is of an integral structure or a detachable structure so as to form an accommodating cavity for accommodating the light-passing part.

As a specific structural form, the car light module further comprises a dimming mechanism, the dimming mechanism comprises a first ball screw, a second ball screw, a third ball screw, a fixing frame and ball nuts respectively corresponding to the ball screws, the fixing frame is connected with the radiator through the ball screws, ball connecting lines of the first ball screw and the second ball screw extend in the left-right direction, and ball connecting lines of the second ball screw and the third ball screw extend in the up-down direction.

The invention provides a vehicle headlamp, which comprises the vehicle lamp module group in the technical scheme of the second aspect, wherein the vehicle lamp module group is distributed in a longitudinal, transverse or inclined arrangement.

A fourth aspect of the invention provides a vehicle including the vehicle headlamp of any one of the third aspect.

Through the basic technical scheme of the invention, the invention has the following beneficial effects:

1. the volume is small. As the optical element of the car light, the required light type can be output only by the corresponding light source, and all levels of optical elements required in the traditional technical scheme are integrated, so that the volume is small;

2. the installation is simple. Except the light source, the optical element of the car light is only one, in the installation, only the position precision between the optical element of the car light and the light source needs to be ensured, and a complex optical system does not need to be adjusted, so that the installation process is simple;

3. the optical system has high precision. The optical element of the vehicle lamp is only required to be arranged, a split primary optical element and a lens are not required to be arranged, the structure of the optical element of the vehicle lamp is not complex, the manufacturing precision is easy to guarantee, and under the condition that the manufacturing precision of the optical element of the vehicle lamp meets the requirement, the relative position precision of the optical element and the light source is only required to be ensured during assembly, and more relative position precision between the optical element and the light source is not required to be met, so that the precision of an optical system is high;

4. the dimming difficulty is small, and only the relative position precision between one car lamp optical element and the light source needs to be ensured, so that the dimming difficulty is small compared with a more complex optical system needing more dimming designs in the prior art;

5. the cost is low. The structure is simple, the number of parts is small, and the manufacturing cost and the process cost are low.

In addition, in a preferred embodiment of the present invention, stray light is largely eliminated. The periphery of the light-through part is provided with the extinction coating or the periphery side face of the light-through part is set to be a low-reflectivity structure with low reflectivity and is provided with the light-shielding part, and the periphery side face of the light-emitting part is set to be a total reflection face, so that light cannot be emitted from the side face of the optical element of the vehicle lamp, meanwhile, only a small part of light is emitted after being reflected by the side face, stray light is basically eliminated, and the quality of light shape is ensured.

Further advantages of the present invention, as well as the technical effects of preferred embodiments, are further described in the following detailed description.

Drawings

FIG. 1 is one of the schematic structural views of one embodiment of the optical element of the vehicular lamp according to the present invention;

FIG. 2 is a schematic structural diagram of a light incident surface and a light emitting surface of an optical element of a vehicular lamp according to an embodiment of the present invention;

FIG. 3 is a second schematic structural view of an embodiment of the optical element of the vehicular lamp according to the present invention;

FIG. 4 is a transverse cross-sectional view of one embodiment of the optical element of the vehicular lamp of the present invention and a schematic view of the optical path thereof;

FIG. 5 is a longitudinal cross-sectional view of one embodiment of the optical element of the vehicular lamp according to the present invention and its optical path schematic;

FIG. 6 is an exploded view of one embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an embodiment of the vehicle lamp module of the present invention;

FIG. 8 is a schematic structural view of another embodiment of the vehicular lamp module of the present invention;

FIG. 9 is a transverse cross-sectional view of one embodiment of the vehicle lamp module of the present invention;

FIG. 10 is a longitudinal cross-sectional view of one embodiment of the vehicle lamp module of the present invention;

FIG. 11 is a schematic structural view of a vehicle lamp module according to still another embodiment of the present invention;

FIG. 12 is a schematic structural view of another embodiment of the optical element for a vehicular lamp according to the present invention.

Description of the reference numerals

1 light-entering part of optical element 11 of vehicle lamp

12 light-passing part and 13 light-emitting part

14 incident surface and 15 emergent surface

16 mounting surface

2 light source 3 support

4 circuit board 5 radiator

6 first bulb screw rod of dimming mechanism 61

62 second ball screw 63 third ball screw

64 ball nut 65 fixing frame

7 positioning pin 8 thread connecting piece

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It should be understood that, along the light emitting direction, "front" refers to the end where the light emitting portion is located, "rear" refers to the end where the light entering portion is located, "left" refers to the left side along the light emitting direction, "right" refers to the right side along the light emitting direction, "up" refers to the upper side along the light emitting direction, "down" refers to the lower side along the light emitting direction, and the terms are based on the orientation or positional relationship shown in the drawings, and are only used for convenience of describing and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, 2 and 3, the optical element for a vehicle lamp in the basic technical solution of the present invention includes an incident portion 11, a light-passing portion 12 and a light-emitting portion 13, which are connected in sequence, where the incident portion 11 includes a plurality of incident surfaces 14 connected in sequence along the left-right direction, the incident surfaces 14 are curved surfaces protruding backward, and the light-emitting surfaces 15 are curved surfaces protruding forward.

In the above basic solution, each light source 2 corresponds to a focal point of the light incident surface 14 protruding backward along the optical axis direction, and after being collected by the light incident portion 11, the light enters the light emergent portion 13 through the light incident portion 12, and then is projected forward by the light emergent portion 13. The light emitting part 13 can be a grid structure to facilitate dimming, the grid structure is formed by connecting a plurality of convex curved surfaces, the diffusion direction of light can be controlled by adjusting the size of a grid, the larger the area of a single grid is, the more obvious the light diffusion is, a proper grid area can be selected according to actual needs to be processed, the uniformity of the emergent light shape is improved, and the dispersion is weakened.

Preferably, the contour of the front end face of the light-passing portion 12 is located within the contour of the rear end portion of the light-exiting portion 13, so that the mounting surface 16 can be formed on the rear end face of the light-exiting portion 13. Referring to fig. 3, 6 and 7, when the optical element 1 is installed in a vehicle lamp module, the installation surface 16 can be matched with the installation bracket 3, so that the vehicle lamp module has a more beautiful appearance and is more convenient to install, and a part of light can be prevented from being emitted to the peripheral side surface of the light emitting portion 13, so that the light can be prevented from being emitted from the peripheral side surface of the light emitting portion 13 or being reflected to the light emitting surface 15 of the light emitting portion 13 through the peripheral side surface of the light emitting portion 13, and stray light can be prevented.

As a preferable configuration, referring to fig. 4, the left side surface and the right side surface of the light-passing portion 12 extend forward in the optical axis direction and then approach each other in the direction close to the optical axis, thereby forming a low-reflectivity structure. During the transmission process of the light, part of the light is generally emitted from the side surface of the optical element 1 of the vehicle lamp directly or reflected by the side surface and then refracted by the light emitting surface 15 of the light emitting portion 13, so that a lot of stray light is formed, and the optical performance of the light shape of the vehicle lamp is affected. In the present invention, the light-passing part 12 is configured as the low-reflectivity structure, and the incident angles of the light rays incident to the left side surface and the right side surface of the light-passing part 12 are small, so that the reflectivity of the left side surface and the right side surface of the light-passing part 12 is low. Stray light formed by reflecting light rays emitted to the left side surface and the right side surface of the light passing part 12 to the light emitting surface 15 of the light emitting part 13 is effectively reduced.

As another preferable configuration, referring to fig. 5, the upper side and the lower side of the light-passing portion 12 have a triangular-like structure in which the height of the longitudinal section in the optical axis direction is gradually increased. This is because the light incident surfaces 14 of the light incident portion 11 are connected in a row in the left-right direction, and therefore the rear end of the optical element 1 for a vehicle lamp can be made small in the vertical direction, which saves the material cost and further reduces the volume of the optical element 1 for a vehicle lamp. In this preferred structure, substantially no light is emitted to the upper and lower sides of the light transmitting portion 12, and thus there is almost no stray light reflected from the upper and lower sides of the light transmitting portion 12 to the light exit surface 15 of the light exit portion 13.

The structure of the light-passing portion 12 can block part of the light emitted to the peripheral side of the light-emitting portion 13, so that the light emitted to the peripheral side of the light-emitting portion 13 can be totally reflected, and further, the peripheral side of the light-emitting portion 13 is closed from back to front in a direction close to the optical axis, so that the light totally reflected by the light-passing portion can be totally reflected to the opposite side of the light-emitting portion 13 through the light-emitting surface 15 of the light-emitting portion 13, and finally totally reflected to the side of the light-passing portion 12. As shown in fig. 5, the light-passing portion 12 with the longitudinal cross section can emit most of the light source 2 directly from the light-emitting surface 15 of the light-emitting portion 13, and a small portion of the light can be emitted to the side surface of the light-emitting portion 13. The upper (lower) side of the light-emitting portion 13 is disposed obliquely, so that the light totally reflected to the light-emitting surface 15 can be totally reflected to the lower (upper) side of the light-emitting portion 13, and then totally reflected to the upper (lower) side of the light-passing portion 12 from the lower (upper) side, and because of the small incident angle, the light is not reflected to the light-emitting surface 15 to form stray light. As shown in fig. 4, the light passing portion 12 having the above-mentioned transverse cross section has a majority of the light rays of the light source 2 directly emitted from the light emitting surface 15 of the light emitting portion 13, a part of the light rays are emitted to the side surface of the light passing portion 12, and the incident angles of the light rays incident on the left side surface and the right side surface of the light passing portion 12 are small, so that the side surface reflectivity is low, and the light rays emitted to the left and right side surfaces of the light passing portion 12 cannot be reflected to enter the light emitting portion 13; a part of the light is emitted to the side of the light-emitting portion 13, and the left (right) side of the light-emitting portion 13 is obliquely arranged, so that the light totally reflected to the light-emitting surface 15 can be totally reflected to the right (left) side of the light-emitting portion 13, and then totally reflected to the left (right) side of the light-passing portion 12 from the right (left) side, and because the reflectivity of the left and right sides of the light-passing portion 12 is very low, no light is reflected to the light-emitting surface 15 to form stray light.

However, this structure cannot effectively eliminate stray light refracted to the outside from the side surface of the light transmitting portion 12, and light can be prevented from being emitted to the outside by providing light blocking members on the side surfaces around the light transmitting portion 12. Or, the side surface of the light-passing portion 12 does not need to be set to be a low-reflectivity structure, and only the peripheral side surfaces of the light-passing portion 12 need to be provided with a light-extinction coating, the light-extinction coating can reduce the reflection and transmission of light from the side surface of the light-passing portion 12, and the light-extinction coating can be a matte black paint or a normal black paint coated with leather patterns on the surface.

It should be noted that, the light-passing portion 12 is not limited to the above-mentioned structure, and in order to meet the requirement of the external shape of the vehicle lamp or further simplify the structure of the optical element 1 of the vehicle lamp to reduce the cost, the light-passing portion may be provided in a shape of a rectangle, a cylinder, or the like, or the above-mentioned triangle-like structure, the low-reflectance structure, and a common geometric structure of a rectangle, a cylinder, or the like may be freely combined, and a light-extinction coating or a light-shielding member may be provided on the surface of the.

Preferably, the optical element 1 of the vehicle lamp is integrally formed, and the material can be plastic, silica gel, glass and the like made of transparent materials, and the plastic can be PMMA or PC. The structure of the light inlet part 11, the light transmitting part 12 and the light outlet part 13 of the optical element 1 of the vehicle lamp is simple, and the manufacturability requirement of integral molding can be met. The optical element 1 of the vehicle lamp is integrally formed, so that the relative position precision of the light inlet part 11 and the light outlet part 13 is ensured, the mounting structure and the mounting process are simplified, and the manufacturing cost is reduced.

Referring to fig. 1 to 5, an optical element 1 for a vehicle lamp according to a preferred embodiment of the present invention is integrally formed, and includes an incident portion 11, a light-passing portion 12, and a light-emitting portion 13, which are sequentially connected, where the incident portion 11 includes a plurality of incident surfaces 14 sequentially connected in a left-right direction, the incident surfaces 14 are curved surfaces protruding backward, and the light-emitting surfaces 15 are curved surfaces protruding forward, and the light-emitting surfaces 15 of the light-emitting portion 13 may be configured as a grid structure to facilitate dimming. The outline of the front end face of the light-passing part 12 is positioned in the outline of the rear end part of the light-passing part 13 so as to form an installation face 16 on the rear end face of the light-passing part 13, the installation face 16 is matched with the bracket 3 of the car lamp module, the left side face and the right side face of the light-passing part 12 extend forwards along the optical axis direction and then are closed to the direction close to the optical axis, a low-reflectivity structure is formed, the height of the longitudinal section of the upper side face and the lower side face of the light-passing part 12 along the optical axis direction is gradually increased to form a triangle-like structure, and the light-blocking parts are arranged on the peripheral side faces of the light-passing part 12 to prevent light from being emitted to.

The structure of the light inlet portion 11, the light transmitting portion 12, and the light outlet portion 13 of the optical element 1 for a vehicle lamp in the preferred embodiment is relatively simple, so that the optical element 1 for a vehicle lamp can be integrally molded. Compare the optical assembly among the prior art and adopt reflector and leaded light post cooperation, perhaps, means such as the condenser of mounting structure comparatively complicated are in order to obtain accurate clear light type, and this car light optical element 1's structure is very simple, nevertheless can be applicable to the matrix car light with above-mentioned car light optical element the same, and cooperation control system and other car light assemblies realize the ADB function, possess simultaneously small, with low costs, simple to operate, the accurate advantage of light type.

Referring to fig. 6, the vehicle lamp module disclosed by the invention comprises a bracket 3, a circuit board 4 provided with a light source 2, a heat sink 5 and a vehicle lamp optical element 1 according to any one of the above technical schemes, wherein a light transmitting part 12 of the vehicle lamp optical element 1 is arranged in an accommodating cavity formed by the bracket 3, one end of the bracket 3 is fixedly connected with the circuit board 4 and the heat sink 5 in sequence, and the other end of the bracket 3 is connected with an installation surface 16 of a light emitting part 13.

This light source 2 corresponds the focus of every outstanding income plain noodles backward, every light source 2 can independently light, close, wherein, light source 2 can be L ED light source, the one end of support 3 in proper order with circuit board 4, radiator 5 pass through threaded connection spare 8 fixed connection, for the convenience of location, still be equipped with locating pin 7 on the installing support 3, correspondingly, set up on circuit board 4 and the radiator 5 with locating pin 7 complex locating hole, the support 3 other end can pass through silica gel with installation face 16 and fix, this car light module simple structure, the installation part is less, only need guarantee in the installation light source 2 for car light optical element 1's position can, the degree of difficulty of adjusting luminance is little.

Specifically, the bracket 3 is an integral structure or a detachable structure to form an accommodating cavity for accommodating the light-passing part 12. The structure of the support 3 can be matched with that of the car light optical element 1, if the light-transmitting part 12 of the car light optical element 1 is rectangular, cylindrical and the like, the support 3 can be directly sleeved and installed with the light-transmitting part 12 as an integral structure; if the structure of the light-passing part 12 of the optical element 1 of the car light is difficult to directly sleeve, the bracket 3 may be a detachable structure, as shown in fig. 8, the accommodating cavity of the bracket 3 matches with the shape of the light-passing part 12, the bracket 3 surrounds the light-passing part 12 after being spliced, and then the detachable bracket 3 is fixed by the threaded connector 8 to stably support the optical element 1 of the car light. In order to prevent light from being emitted from the periphery of the light-transmitting portion 12, the support 3 can function as a light-shielding member, and the cost for arranging the extinction coating is saved by using the support 3 made of a light-tight material. Further, the bracket 3 and the optical element 1 of the vehicle lamp can be made as a single piece, and refer to fig. 11 and 12, so as to reduce the number of parts and facilitate assembly. In order to achieve the same effect of eliminating the stray light, the integrated body may be formed by two-color injection molding, the outer bracket 3 is made of light-absorbing material, the bracket 3 can prevent the light incident on the surface from emitting from the side surface, and meanwhile, the optical element 1 for the vehicle lamp with the side surface with low reflectivity can greatly reduce the stray light reflected by the side surface of the light-transmitting part 12 and then emitted from the light-emitting surface 15 of the light-emitting part 13, wherein the light-absorbing material may be black PC material.

The car light module is still including adjusting luminance mechanism 6, adjust luminance mechanism 6 includes first bulb screw 61, second bulb screw 62, third bulb screw 63, mount 65 and the bulb nut 64 that corresponds respectively with the bulb screw, mount 65 with radiator 5 passes through the bulb screw is connected, wherein, first bulb screw 61 with the bulb line of second bulb screw 62 extends along left right direction, second bulb screw 62 with the bulb line of third bulb screw 63 extends along upper and lower direction. The dimming principle is as follows: the third ball screw 63 is rotated to enable the third ball screw 63 to move back and forth, at the moment, the first ball screw 61 and the second ball screw 62 are fixed, so that the vehicle lamp module can rotate by taking a ball connecting line of the first ball screw 61 and the second ball screw 62 as an axis, and the up-down dimming is realized; the first ball screw 61 is rotated to enable the first ball screw 61 to move back and forth, at the moment, the second ball screw 62 and the third ball screw 63 are fixed, so that the car lamp module can rotate by taking a ball connecting line of the second ball screw 62 and the third ball screw 63 as an axis, and left-right dimming is realized. The dimming mechanism 6 further reduces the dimming difficulty of the car lamp module.

Referring to fig. 6 to 10, a lamp module according to a preferred embodiment of the present invention includes a bracket 3, a circuit board 4 provided with a light source 2, a heat sink 5, and a lamp optical element 1 according to any one of the above-described embodiments. And the detachable split type support 3 is tightly wrapped on the light transmitting part 12 of the car lamp optical element 1 and then the split type support 3 is fixedly connected by screws. The positioning pin 7 on the support 3 is inserted into positioning holes on the circuit board 4 and the radiator 5 for preliminary positioning, one end of the support 3 is fixedly connected with the circuit board 4 and the radiator 5 in sequence through a threaded fastener 8, and the other end of the support is connected with the mounting surface 15 of the car lamp optical element 1 through silica gel. The car light module further comprises a dimming mechanism 6, one end of each ball screw is mounted on the radiator 5 through a ball nut 64, the other end of each ball screw is connected with the fixing frame 65, and dimming is achieved through adjusting the ball screws. Thus, by means of the optical element 1 of the vehicle lamp, the vehicle lamp module has fewer parts, is highly compact, has higher integration degree and smaller overall volume; the installation is more convenient, and only the relative position relation between the optical element 1 of the vehicle lamp and the light source 2 is needed; the optical system has high precision, because only one vehicle lamp optical element 1 needs to be arranged, the structure of the vehicle lamp optical element 1 is not complicated, the manufacturing precision is easy to ensure, and the optical system has high precision; the cost is lower, and the part and the simple structure of this car light module are less, quantity, and manufacturing cost is lower.

The invention discloses a vehicle headlamp, which comprises a vehicle lamp module group according to any one of the technical schemes, wherein the vehicle lamp module group is arranged and distributed according to the longitudinal direction, the transverse direction or the inclination to adapt to the requirements of different vehicle lamp shapes, and a vehicle-mounted sensing system is matched, so that the vehicle-mounted system automatically and independently controls the on-off of L ED light sources in the vehicle lamp module group, a high beam illumination area is subdivided into a plurality of illumination areas, when the vehicle-mounted sensing system detects the coming vehicle in an opposite lane, L ED light sources in the corresponding area are turned off, the dazzling of high beams is effectively prevented, and a good illumination effect is achieved in other areas of the road surface.

The vehicle headlamp disclosed by the invention comprises the vehicle headlamp of any one of the technical schemes, adopts all the technical schemes of all the embodiments, and therefore, the vehicle headlamp at least has all the beneficial effects brought by the technical schemes of the embodiments.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.