Headlight optical element, headlight module, vehicle headlamp and vehicle

Abstract

The present invention relates to a vehicle lighting device, and discloses a vehicle light optical element, comprising a light input portion (11), a light-through portion (12), and a light-emitting portion (13) connected in sequence, wherein the light input portion (11) comprises a plurality of light input surfaces (14) connected in sequence along the left and right directions, wherein the light input surface (14) is a curved surface convexly protruding backward along the optical axis direction, and the light-emitting surface (15) of the light-emitting portion (13) is a curved surface convexly protruding forward along the optical axis direction, and the left side and the right side of the light-through portion (12) extend forward along the optical axis direction and then approach the direction close to the optical axis, and the height of the longitudinal section of the upper side and the lower side of the light-through portion (12) along the optical axis direction gradually increases. In addition, the present invention also discloses a vehicle light module, a vehicle headlamp, and a vehicle. The vehicle light optical element of the present invention is not only small in size, but also has high optical precision, accurate light pattern, convenient installation, and low cost.

Description

Technical Field

[0001] The invention relates to a vehicle lighting device, in particular to a vehicle light optical element, and further to a vehicle light module, a vehicle headlamp and a vehicle. Background Art

[0002] For night driving, the importance of automobile lighting systems, especially headlights, is self-evident. When the car is driving at high speed, the dazzling high beam may cause the driver to lose control of the car, and then unpredictable dangers may occur. Automobile headlights should not only provide drivers with a wide visual range and good visual conditions, but also affect other road participants as little as possible and avoid dazzling other road participants. With the development of technology, matrix LED headlights have become one of the future development directions of automobile lights. The light source of the matrix LED high beam is composed of multiple LEDs, which are arranged in a certain way to form an array pattern. According to the position of vehicles and pedestrians in the field of vision in front of the vehicle, the matrix LED headlights can turn off the LEDs in the corresponding area to avoid dazzling pedestrians or oncoming drivers.

[0003] In the prior art, a general matrix-type headlight module is equipped with a variety of optical elements. In order to ensure the utilization rate of light and control the light type, the structure design of each optical element is usually relatively complex, which is difficult to be formed in one piece, and can only be processed and installed separately, resulting in complex installation, large headlight volume and high cost. The Chinese invention patent with application number CN109611780A discloses a motor vehicle high-beam lighting module, in which a concentrator is the primary optical element of the module, and a lens is the secondary optical element of the module. The concentrator is composed of a plurality of collimating units, and the light emission path is controlled by the collimating units. Therefore, the structure of the concentrator is relatively complex, and it is more reasonable to produce it separately. The Chinese invention patent application number CN109357235A discloses a matrix car light system based on flip-chip LED white light chips. Each flip-chip LED white light chip is provided with a corresponding reflector, and a light guide column is provided above each flip-chip LED white light chip. The reflector gathers the light emitted by the corresponding flip-chip LED white light chip; the light can be shaped into a rectangular spot after being shaped by the corresponding light guide column and then emitted through the lens. The reflector, light guide column and lens cooperate with each other. Although the structures of the reflector, light guide column and lens are relatively simple, the three are difficult to be formed in one piece and still need to be installed separately.

[0004] Since each optical element is installed separately, many corresponding mounting brackets need to be set, which makes the structure of the headlight module complicated, and increases the cost of the headlight module and also increases the volume of the headlight module. In the above-mentioned Chinese invention patent with application number CN109611780A, the mounting structure and mounting process of the headlight module are described in detail. Since the relative position accuracy between each optical element must be ensured to ensure the optical performance of the headlight, the manufacturing accuracy of the optical element and the positioning and mounting accuracy of the headlight module need to be very high. Therefore, it is necessary to set a special mounting structure, such as mounting grooves, positioning grooves, etc.; special parts for mounting various optical elements, such as positioning columns, pressure plates, mounting brackets, etc., increase the manufacturing cost.

[0005] As mentioned above, in order to pursue accurate light patterns and diversified light pattern superposition methods, matrix headlights are often large in size and expensive. However, matrix headlights are not only required to realize the ADB function, but also to further simplify the headlight structure and reduce the cost of the headlight on this basis, so that the price of matrix headlights is more acceptable to the public.

[0006] In view of the above-mentioned defects of the prior art, it is necessary to design a new type of vehicle light optical element. Summary of the invention

[0007] The first technical problem to be solved by the present invention is to provide a headlight optical element which is not only small in size but also has high optical precision, accurate light pattern, easy installation and low cost.

[0008] The second technical problem to be solved by the present invention is to provide a vehicle light module which is not only small in size but also has high optical precision, accurate light pattern, and simple dimming; it has fewer components, is easy to install, and has low manufacturing and process costs.

[0009] The third technical problem to be solved by the present invention is to provide a vehicle headlamp which is small in size, has high optical precision, accurate light pattern, and simple dimming, has fewer components, is easy to install, has low manufacturing and process costs, and has flexible and diverse light pattern superposition methods.

[0010] The fourth technical problem to be solved by the present invention is to provide a vehicle whose headlights are relatively small in size, have high optical precision, accurate light patterns, and simple dimming, have fewer components, are simple to install, and have lower manufacturing and process costs.

[0011] In order to achieve the above-mentioned purpose, a first aspect of the present invention provides a vehicle light optical element, comprising a light entrance portion, a light passing portion and a light emitting portion connected in sequence, the light entrance portion comprising a plurality of light entrance surfaces connected in sequence along the left-right direction, the light entrance surface is a curved surface convex backward, the light emitting surface of the light emitting portion is a curved surface convex forward, the left side surface and the right side surface of the light passing portion extend forward along the optical axis direction, and then approach the direction close to the optical axis, and the height of the longitudinal section of the upper side surface and the lower side surface of the light passing portion along the optical axis direction gradually increases.

[0012] Preferably, the contour of the front end surface of the light-passing portion is located within the contour of the rear end portion of the light-emitting portion, so that a mounting surface can be formed on the rear end surface of the light-emitting portion.

[0013] As a preferred structural form of the present invention, the surrounding side surfaces of the light-emitting portion are close to the optical axis from the back to the front, so as to be able to fully reflect the light to the side surfaces of the light-transmitting portion.

[0014] Preferably, a matte coating or a light-shielding component is provided on the surface of the light-transmitting portion.

[0015] Specifically, the headlight optical element is integrally formed.

[0016] A second aspect of the present invention provides a vehicle light module, comprising a bracket, a circuit board with a light source, and a heat sink, and also comprising a vehicle light optical element described in any one of the technical solutions of the first aspect, wherein the light-transmitting portion of the vehicle light optical element is arranged in a receiving cavity formed by the bracket, one end of the bracket is fixedly connected to the circuit board and the heat sink in turn, and the other end is connected to the mounting surface of the light-emitting portion.

[0017] Preferably, the bracket is an integral structure or a detachable structure to form a receiving cavity for receiving the light-transmitting portion.

[0018] As a specific structural form, the headlight module also includes a dimming mechanism, which includes a first ball screw, a second ball screw, a third ball screw, a fixing frame and ball nuts corresponding to the ball screws respectively, and the fixing frame is connected to the radiator through the ball screws, wherein the center line of the ball heads of the first ball screw and the second ball screw extends in the left-right direction, and the center line of the ball heads of the second ball screw and the third ball screw extends in the up-down direction.

[0019] A third aspect of the present invention provides a vehicle headlamp, comprising a headlight module as described in any one of the technical solutions of the second aspect, wherein the headlight module is arranged and distributed in a longitudinal, transverse, or oblique manner.

[0020] A fourth aspect of the present invention provides a vehicle, comprising the vehicle headlight described in any one of the technical solutions of the third aspect.

[0021] The basic technical solution of the present invention can achieve the following beneficial effects:

[0022] 1. Small size. As a car light optical element, only the corresponding light source is needed to output the required light type, integrating the various optical elements required in the traditional technical solution, and the size is small;

[0023] 2. Easy installation. In addition to the light source, there is only one optical element for the headlight. During installation, it is only necessary to ensure the position accuracy between the optical element and the light source. There is no need to adjust the complex optical system, making the installation process simple.

[0024] 3. High precision of the optical system. Only one headlight optical element is required, and no separate primary optical element and lens are required. The structure of the headlight optical element is not complicated, and its manufacturing precision is easy to ensure. When the manufacturing precision of the headlight optical element meets the requirements, during assembly, only the relative position precision of one optical element and the light source needs to be ensured, and the relative position precision between multiple optical elements and light sources does not need to be met, so that the optical system has high precision;

[0025] 4. Dimming is easy. It only needs to ensure the relative position accuracy between a headlight optical element and a light source. Compared with the existing technology, which requires more complex optical systems with more dimming designs, dimming is easy.

[0026] 5. Low cost. The simple structure and small number of parts make the manufacturing and process costs low.

[0027] In addition, in the preferred embodiment of the present invention, stray light is greatly eliminated. By providing a matte coating around the light-transmitting portion or providing the side surfaces around the light-transmitting portion with a low reflectivity structure and a light-shielding component, and providing the side surfaces around the light-emitting portion with a total reflection surface, light cannot be emitted from the side of the headlight optical element, and only a small part of the light is emitted after being reflected from the side, which basically eliminates stray light and ensures the quality of the light shape.

[0028] Other advantages of the present invention and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is one of the structural schematic diagrams of an embodiment of the vehicle light optical element of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the light incident surface and the light emitting surface of an embodiment of the automotive light optical element of the present invention;

[0031] Figure 3 This is a second structural schematic diagram of an embodiment of the vehicle light optical element of the present invention;

[0032] Figure 4 is a cross-sectional view of an embodiment of the vehicle light optical element of the present invention and a schematic diagram of its optical path;

[0033] Figure 5 is a longitudinal cross-sectional view of an embodiment of the vehicle light optical element of the present invention and a schematic diagram of its optical path;

[0034] Figure 6 is a schematic diagram of the exploded structure of an embodiment of the vehicle light module of the present invention;

[0035] Figure 7 It is a structural schematic diagram of an implementation mode of a vehicle light module of the present invention;

[0036] Figure 8 is a structural schematic diagram of another embodiment of the vehicle light module of the present invention;

[0037] Fig. 9 is a transverse cross-sectional view of an embodiment of a vehicle lamp module of the present invention;

[0038] Fig.10 is a longitudinal cross-sectional view of an embodiment of a vehicle lamp module of the present invention;

[0039] Fig.11 It is a structural schematic diagram of another embodiment of the vehicle light module of the present invention;

[0040] Fig.12 It is a schematic structural diagram of another embodiment of the vehicle light optical element of the present invention.

[0041] Description of Reference Numerals

[0042] 1 Headlight optical element 11 Light entry part

[0043] 12 light-transmitting part 13 light-emitting part

[0044] 14 Light incident surface 15 Light exit surface

[0045] 16 Mounting surface

[0046] 2 Light source 3 Bracket

[0047] 4 Circuit board 5 Radiator

[0048] 6 Dimming mechanism 61 First ball screw

[0049] 62 Second ball screw 63 Third ball screw

[0050] 64 Ball nut 65 Fixing bracket

[0051] 7 Positioning pin 8 Threaded connection DETAILED DESCRIPTION

[0052] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] It should be understood that, along the direction of light emitting, "front" refers to the end where the light-emitting part is located, "rear" refers to the end where the light-entering part is located, "left" refers to the left side along the direction of light emitting, "right" refers to the right side along the direction of light emitting, "up" refers to the upper side along the direction of light emitting, and "down" refers to the lower side along the direction of light emitting. The terms are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0055] References Figure 1 , Figure 2 and Figure 3 The headlight optical element in the basic technical solution of the present invention includes a light incident portion 11, a light passing portion 12 and a light emitting portion 13 connected in sequence. The light incident portion 11 includes a plurality of light incident surfaces 14 connected in sequence along the left and right directions. The light incident surface 14 is a curved surface convex backwards, and the light emitting surface 15 is a curved surface convex forwards.

[0056] In the above basic scheme, each light incident surface 14 protruding backward along the optical axis corresponds to a light source 2 at its focal point. After being collected by the light incident portion 11, the light enters the light exit portion 13 through the light passing portion 12, and is then projected forward by the light exit portion 13. The light exit portion 13 can be set as a grid structure for easy dimming. The grid structure is formed by connecting a plurality of protruding curved surfaces. The diffusion direction of light can be controlled by adjusting the size of the grid. Generally, the larger the area of ​​a single grid, the more obvious the diffusion of light. The appropriate grid area can be selected according to actual needs to improve the uniformity of the emitted light shape and weaken the dispersion.

[0057] Preferably, the contour of the front end surface of the light-passing portion 12 is located within the contour of the rear end portion of the light-emitting portion 13, so that a mounting surface 16 can be formed on the rear end surface of the light-emitting portion 13. Figure 3 , Figure 6 and Figure 7 When the headlight optical element 1 is installed in the headlight module, the mounting surface 16 can cooperate with the mounting bracket 3 to make the appearance of the headlight module more beautiful and the installation more convenient. Moreover, a part of the light can be prevented from being emitted to the surrounding sides of the light emitting portion 13, thereby preventing it from being emitted from the surrounding sides of the light emitting portion 13 or being reflected from the surrounding sides of the light emitting portion 13 to the light emitting surface 15 of the light emitting portion 13 to form stray light.

[0058] As a preferred structural form, refer to Figure 4 , the left side and the right side of the light-passing portion 12 extend forward along the direction of the optical axis, and then move closer to the direction close to the optical axis, forming a low reflectivity structure. During the transmission of light, usually part of the light will be directly emitted from the side of the headlight optical element 1 or reflected from the side and then refracted by the light-emitting surface 15 of the light-emitting portion 13, forming a lot of stray light, which affects the optical performance of the headlight shape. In the present invention, the light-passing portion 12 is set to the above-mentioned low reflectivity structure, and the incident angle of the light incident on the left side and the right side of the light-passing portion 12 is very small, so that the reflectivity of the left side and the right side of the light-passing portion 12 is very low. The stray light formed by the light incident on the left side and the right side of the light-passing portion 12 and reflected to the light-emitting surface 15 of the light-emitting portion 13 is effectively reduced.

[0059] As another preferred structural form, refer to Figure 5 , the height of the longitudinal section of the upper side and lower side of the light-transmitting portion 12 along the optical axis direction gradually increases, presenting a triangular structure. This is because the light-entering surfaces 14 of the light-entering portion 11 are connected in a row along the left-right direction, so the rear end of the headlight optical element 1 can be very small in the vertical direction, saving material costs and further reducing the volume of the headlight optical element 1. Under this preferred structure, basically no light is projected to the upper side and lower side of the light-transmitting portion 12, so there is almost no stray light reflected from the upper side and lower side of the light-transmitting portion 12 to the light-emitting surface 15 of the light-emitting portion 13.

[0060] The structure of the light-through portion 12 can block part of the light emitted to the surrounding sides of the light-emitting portion 13, so that the light emitted to the surrounding sides of the light-emitting portion 13 can be totally reflected. Furthermore, the surrounding sides of the light-emitting portion 13 are moved closer to the optical axis from the back to the front, so that the totally reflected light can be totally reflected to the side of the opposite 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-through portion 12. Figure 5As shown, the light-passing portion 12 having the above longitudinal cross-section emits most of the light from the light source 2 directly from the light-emitting surface 15 of the light-emitting portion 13, and a small part of the light is emitted to the side of the light-emitting portion 13. The upper (lower) side of the light-emitting portion 13 is tilted so that the light that is totally reflected from the light-emitting surface 15 can be totally reflected to the lower (upper) side of the light-emitting portion 13, and then totally reflected from the lower (upper) side to the upper (lower) side of the light-passing portion 12. Since the incident angle is very small, basically no light is reflected from the light-emitting surface 15 to form stray light. Figure 4 As shown, in the light-passing portion 12 with the above-mentioned transverse cross-section, most of the light from the light source 2 is directly emitted from the light-emitting surface 15 of the light-emitting portion 13, and a part of the light is emitted to the side of the light-passing portion 12. The incident angles of the light incident on the left and right sides of the light-passing portion 12 are very small, so the side reflectivity is very low, and the light incident on the left and right sides of the light-passing portion 12 cannot be reflected into 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 inclined, so that the light totally reflected from the light 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 from the right (left) side to the left (right) side of the light-passing portion 12. Since the reflectivity of the left and right sides of the light-passing portion 12 is very low, basically no light is reflected from them to the light-emitting surface 15 to form stray light.

[0061] However, this structure cannot effectively eliminate the stray light refracted from the side of the light-transmitting portion 12 to the outside, and light can be prevented from being emitted to the outside by setting a light-shielding component on the sides around the light-transmitting portion 12. Alternatively, it is not necessary to set the side of the light-transmitting portion 12 as a low-reflectivity structure, and only a matte coating needs to be set on the sides around the light-transmitting portion 12. The matte coating can reduce the reflection and transmission of light from the side of the light-transmitting portion 12. The matte coating can be coated with matte black paint, or the surface can be provided with leather grain and coated with ordinary black paint.

[0062] It should be noted that the light-transmitting portion 12 is not limited to the above-mentioned structure. In order to meet the needs of the appearance of the headlight or to further simplify the structure of the headlight optical element 1 to reduce costs, it can also be set to a rectangular, cylindrical or other shape, or the above-mentioned triangular structure, low-reflectivity structure and common geometric structures such as rectangle and cylinder can be freely combined, and a matte coating or a shading component can be set on the surface of the light-transmitting portion 12 to eliminate stray light.

[0063] Preferably, the headlight optical element 1 is integrally formed, and the material can be transparent plastic, silicone, glass, etc., and the plastic can be PMMA or PC. The structures of the light input part 11, the light passing part 12, and the light output part 13 of the headlight optical element 1 of the present invention are relatively simple, and can meet the process requirements of integral forming. The headlight optical element 1 is integrally formed, which not only ensures the relative position accuracy of the light input part 11 and the light output part 13, simplifies the installation structure and installation process, but also reduces the manufacturing cost.

[0064] refer to Figures 1 to 5 As shown, the headlight optical element 1 in the preferred embodiment of the present invention is integrally formed, and includes a light entrance portion 11, a light passing portion 12 and a light exit portion 13 which are connected in sequence, the light entrance portion 11 includes a plurality of light entrance surfaces 14 which are connected in sequence along the left-right direction, the light entrance surface 14 is a curved surface convex backwards, the light exit surface 15 is a curved surface convex forwards, wherein the light exit surface 15 of the light exit portion 13 can be set to a grid structure for easy dimming. The contour of the front end surface of the light-passing portion 12 is located within the contour of the rear end portion of the light-emitting portion 13, so that a mounting surface 16 can be formed on the rear end surface of the light-emitting portion 13, and the mounting surface 16 cooperates with the bracket 3 of the vehicle light module. The left and right sides of the light-passing portion 12 extend forward along the optical axis direction, and then move closer to the optical axis to form a low reflectivity structure. The height of the longitudinal section of the upper and lower sides of the light-passing portion 12 along the optical axis direction gradually increases, presenting a triangular structure, and shading components are arranged on the sides around the light-passing portion 12 to prevent light from being emitted from the sides of the light-passing portion 12 to the outside.

[0065] The structures of the light-entering part 11, the light-passing part 12, and the light-emitting part 13 of the headlight optical element 1 in the preferred embodiment are relatively simple, making it possible to form the headlight optical element 1 in one piece. Compared with the optical components in the prior art that use reflectors and light guides, or relatively complex concentrators to obtain accurate and clear light patterns, the structure of the headlight optical element 1 is very simple, but like the above-mentioned headlight optical element, it can be applied to matrix headlights, cooperate with the control system and other headlight components to realize the ADB function, and has the advantages of small size, low cost, easy installation, and accurate light pattern.

[0066] The vehicle lamp module disclosed in the present invention is referred to Figure 6 , including a bracket 3, a circuit board 4 with a light source 2, and a heat sink 5, and also includes a headlight optical element 1 described in any one of the above technical solutions, wherein the light-transmitting portion 12 of the headlight optical element 1 is arranged in a receiving cavity formed by the bracket 3, one end of the bracket 3 is fixedly connected to the circuit board 4 and the heat sink 5 in turn, and the other end is connected to the mounting surface 16 of the light-emitting portion 13.

[0067] The light source 2 corresponds to the focus of each light incident surface protruding backwards, and each light source 2 can be lit and turned off independently, wherein the light source 2 can be an LED light source. One end of the bracket 3 is fixedly connected to the circuit board 4 and the heat sink 5 in turn through a threaded connector 8. For the convenience of positioning, a positioning pin 7 is also provided on the mounting bracket 3. Correspondingly, a positioning hole that cooperates with the positioning pin 7 is provided on the circuit board 4 and the heat sink 5. The other end of the bracket 3 can be fixed to the mounting surface 16 through silicone. The headlight module has a simple structure and fewer installation parts. During the installation process, it is only necessary to ensure the position of the light source 2 relative to the headlight optical element 1, and the dimming difficulty is small.

[0068] Specifically, the bracket 3 is an integral structure or a detachable structure to form a receiving cavity for receiving the light-transmitting portion 12. The structure of the bracket 3 can match the structure of the above-mentioned headlight optical element 1. If the light-transmitting portion 12 of the headlight optical element 1 is a rectangular or cylindrical structure, the bracket 3 can be an integral structure directly connected and installed with the light-transmitting portion 12. If the light-transmitting portion 12 of the headlight optical element 1 is difficult to be directly connected, the bracket 3 can be a detachable structure, such as Figure 8 As shown, the shape of the bracket 3 accommodating cavity matches the shape of the light-transmitting portion 12. After the bracket 3 is assembled, it surrounds the light-transmitting portion 12, and then the detachable bracket 3 is fixed by the threaded connector 8 to stably support the headlight optical element 1. In order to prevent light from emitting from the periphery of the light-transmitting portion 12, the bracket 3 can act as a light-shielding component. The bracket 3 made of opaque material saves the cost of setting a matte coating. Furthermore, the bracket 3 and the headlight optical element 1 can be made into an integral part, refer to Fig.11 , Fig.12 , so as to reduce the number of parts and facilitate assembly. In order to achieve the same effect of eliminating stray light, the integrated part can be formed by two-color injection molding, and the outer bracket 3 part is made of light-absorbing material. The bracket 3 part can prevent the light incident on its surface from being emitted from the side. At the same time, the use of the above-mentioned headlight optical element 1 with low reflectivity side can greatly reduce the stray light reflected by the side of the light-transmitting part 12 and then emitted from the light-emitting surface 15 of the light-emitting part 13. Among them, the light-absorbing part material can be selected from black PC material.

[0069] The headlight module also includes a dimming mechanism 6, which includes a first ball screw 61, a second ball screw 62, a third ball screw 63, a fixing frame 65 and ball nuts 64 corresponding to the ball screws respectively, and the fixing frame 65 is connected to the radiator 5 through the ball screws, wherein the center line of the ball heads of the first ball screw 61 and the second ball screw 62 extends in the left-right direction, and the center line of the ball heads of the second ball screw 62 and the third ball screw 63 extends in the up-down direction. The dimming principle is: rotating the third ball screw 63 can make the third ball screw 63 move forward and backward, at this time, the first ball screw 61 and the second ball screw 62 are fixed, so that the above-mentioned lamp module can be rotated with the center line of the ball heads of the first ball screw 61 and the second ball screw 62 as the axis to achieve up and down dimming; rotating the first ball screw 61 can make the first ball screw 61 move forward and backward, at this time, the second ball screw 62 and the third ball screw 63 are fixed, so that the above-mentioned lamp module can be rotated with the center line of the ball heads of the second ball screw 62 and the third ball screw 63 as the axis to achieve left and right dimming. The above-mentioned dimming mechanism 6 further reduces the difficulty of dimming the lamp module.

[0070] refer to Figures 6 to 10 The headlight module in the preferred embodiment of the present invention comprises a bracket 3, a circuit board 4 provided with a light source 2, a heat sink 5 and a headlight optical element 1 described in any one of the above technical solutions. The detachable split bracket 3 tightly wraps around the light-transmitting portion 12 of the headlight optical element 1 and then the split bracket 3 is connected and fixed with screws. The positioning pin 7 on the bracket 3 is inserted into the positioning holes on the circuit board 4 and the heat sink 5 for preliminary positioning. One end of the bracket 3 is fixedly connected to the circuit board 4 and the heat sink 5 in turn through a threaded fastener 8, and the other end is connected to the mounting surface 15 of the headlight optical element 1 through silicone. The headlight module also includes a dimming mechanism 6, one end of the three ball screws is installed on the radiator 5 through a ball nut 64, and the other end is connected to the fixing frame 65, and the dimming effect is achieved by adjusting the ball screws. In this way, with the help of the headlight optical element 1 of the present invention, the headlight module has fewer parts and is highly compact, with a higher degree of integration and a smaller overall volume; it is more convenient to install, and only the relative position relationship between the headlight optical element 1 and the light source 2 is required; the optical system has high precision, because only one headlight optical element 1 is required, the structure of the headlight optical element 1 is not complicated, and its manufacturing precision is easier to ensure, so that the optical system has high precision; the cost is low, the parts and structure of the headlight module are simple, the number is small, and the manufacturing cost is low.

[0071] The vehicle headlamp disclosed in the present invention includes the headlight module described in any one of the above technical solutions, and the headlight module is arranged and distributed in a longitudinal, transverse, or oblique manner to meet the needs of different headlight shapes. In conjunction with the vehicle-mounted sensing system, the vehicle-mounted system automatically and independently controls the opening and closing of each LED light source in the headlight module, and subdivides the high-beam lighting area into multiple lighting areas. When the vehicle-mounted sensing system detects an oncoming vehicle in the opposite lane, the LED light source in the corresponding area is turned off, which effectively prevents the glare of the high beam and has a good lighting effect in other areas of the road. At the same time, the bracket 3 of the headlight module is only arranged around the light-through portion 12, and only the light-emitting portion 13 is exposed to the outside, which ensures the transparency and aesthetics of the exposed outer part of the headlight.

[0072] The vehicle disclosed in the present invention includes the vehicle headlight described in any one of the above technical solutions, and adopts all the technical solutions of all the above embodiments, so it has at least all the beneficial effects brought by the technical solutions of the above embodiments.

[0073] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A headlight optical element, characterized in that: The invention comprises a light input portion (11), a light passing portion (12) and a light output portion (13) which are connected in sequence. The light input portion (11) comprises a plurality of light input surfaces (14) which are connected in sequence along the left-right direction. The light input surface (14) is a curved surface convex backwards. The light output surface (15) of the light output portion (13) is a curved surface convex forwards. The left side surface and the right side surface of the light passing portion (12) extend forwards along the optical axis and then approach the direction close to the optical axis. The height of the longitudinal section of the upper side surface and the lower side surface of the light passing portion (12) along the optical axis gradually increases. The surrounding side surfaces of the light output portion (13) approach the direction close to the optical axis from the back to the front so as to be able to fully reflect light to the side surface of the light passing portion (12).

2. The vehicle light optical element according to claim 1, characterized in that: The contour of the front end surface of the light-passing portion (12) is located within the contour of the rear end portion of the light-emitting portion (13), so that a mounting surface (16) can be formed on the rear end surface of the light-emitting portion (13).

3. The vehicle light optical element according to claim 1 or 2, characterized in that: The surface of the light-transmitting portion (12) is provided with a matte coating or a light-shielding component.

4. The vehicle light optical element according to claim 1 or 2, characterized in that: The headlight optical element is integrally formed.

5. A vehicle lamp module, comprising a bracket (3), a circuit board (4) provided with a light source (2), and a heat sink (5), characterized in that: It also comprises a headlight optical element (1) according to any one of claims 1 to 4, wherein the light-transmitting portion (12) of the headlight optical element (1) is arranged in a receiving cavity formed by the bracket (3), and one end of the bracket (3) is fixedly connected to the circuit board (4) and the heat sink (5) in sequence, and the other end is connected to the mounting surface (16) of the light-emitting portion (13).

6. The vehicle lamp module according to claim 5, characterized in that: The bracket (3) is an integral structure or a detachable structure to form a receiving cavity for receiving the light-transmitting portion (12).

7. The vehicle light module according to claim 5, characterized in that: The vehicle light module also includes a dimming mechanism (6), which includes a first ball screw (61), a second ball screw (62), a third ball screw (63), a fixing frame (65) and ball nuts (64) corresponding to the ball screws respectively, wherein the fixing frame (65) is connected to the heat sink (5) via the ball screws, wherein a center line connecting the ball heads of the first ball screw (61) and the second ball screw (62) extends in the left-right direction, and a center line connecting the ball heads of the second ball screw (62) and the third ball screw (63) extends in the up-down direction.

8. A vehicle headlamp, characterized in that: The vehicle light module comprises at least one vehicle light module according to any one of claims 5 to 7, wherein the vehicle light modules are arranged longitudinally, transversely, or obliquely.

9. A vehicle, characterized in that: The invention comprises the vehicle headlamp as claimed in claim 8.

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