Vehicle headlamp and vehicle

Abstract

The utility model discloses a vehicle headlamp and a vehicle, the vehicle headlamp comprises an illumination module used for illumination and a projection module used for projection, and the projection module comprises a first projection unit and a second projection unit; the first projection unit and the second projection unit are independently arranged, and the first projection unit and the second projection unit are suitable for being used under different projection distances; and the controller is respectively connected with the first projection unit and the second projection unit, and the controller is used for receiving the projection signal and controlling the operation states of the first projection unit and the second projection unit according to the projection signal. According to the utility model, more convenient, efficient and high-quality projection experience can be provided for a user, the display form of the vehicle headlight is enriched, intelligent interaction is realized, and the overall science and technology feeling and intelligence feeling of the vehicle are improved, so that more efficient and accurate projection control is realized, the identification degree of the surrounding environment in the driving process is enhanced, and the driving experience of the vehicle is improved. Therefore, the driving safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle headlamp and a vehicle. Background Art

[0002] Vehicle lamps are important components of vehicles, mainly playing roles such as lighting and prompting. With the progress of technology, the shapes of vehicle lamps are becoming more and more diverse and personalized. While providing lighting and prompting, good lamp shapes can also enhance the aesthetic feeling of the whole vehicle and the competitiveness of products.

[0003] The headlamp is an important part of vehicle lamps, mainly playing a role of lighting indication during driving, facilitating the driver to view the road conditions in front of the vehicle, thereby improving driving safety. However, currently, the functions of vehicle headlamps are relatively single, mainly used for lighting indication. Due to problems such as the single display form of headlamps and the inability to achieve intelligent interaction, the overall sense of technology and intelligence of the vehicle is insufficient. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the purpose of the utility model is to provide a vehicle headlamp and a vehicle.

[0005] A vehicle headlamp provided by the utility model includes a lighting module for lighting and a projection module for projection. The projection module includes a first projection unit and a second projection unit; the first projection unit and the second projection unit are independently arranged, and the first projection unit and the second projection unit are adapted to be used at different projection distances; a controller, the controller is respectively connected to the first projection unit and the second projection unit, and the controller is used to receive projection signals and control the operating states of the first projection unit and the second projection unit according to the projection signals.

[0006] According to the vehicle headlamp of the embodiment of the utility model, the first projection unit and the second projection unit are independently arranged, and the first projection unit and the second projection unit can be used at different projection distances. The controller is respectively connected to the first projection unit and the second projection unit. When the controller receives a projection signal, it can control the operating states of the first projection unit and the second projection unit according to the projection signal, enhancing the flexibility and adaptability of the projection module. Through precise control, the optimization and stability of the projection effect are ensured, providing users with a more convenient, efficient and high-quality projection experience. It not only enriches the display form of vehicle headlamps and realizes intelligent interaction, but also helps to enhance the overall sense of technology and intelligence of the vehicle, thereby realizing more efficient and accurate projection control, further enhancing the recognition of the surrounding environment during driving, and thus improving driving safety.

[0007] In addition, the vehicle headlamp according to the embodiment of the present utility model may further have the following additional technical features:

[0008] Further, the projection signal includes a target projection distance; the controller is configured to control the first projection unit to turn on for projection when the target projection distance does not exceed a set distance; the controller is configured to control the second projection unit to turn on for projection when the target projection distance reaches or exceeds the set distance.

[0009] Further, the controller at least includes a comparison unit, a storage unit, and a control unit; the storage unit is configured to store the set distance; the comparison unit is configured to compare the size of the target projection distance and the set distance; the control unit is configured to control the operating states of the first projection unit and the second projection unit according to the comparison result output by the comparison unit.

[0010] Further, the resolution of the projection image of the first projection unit is higher than that of the second projection unit.

[0011] Further, the brightness of the projection image of the second projection unit is higher than that of the first projection unit, and the projection range of the second projection unit is larger than that of the first projection unit.

[0012] Further, the first projection unit includes a DLP (Digital Light Processing) module.

[0013] Further, the pixel resolution of the DLP module is greater than or equal to 400,000.

[0014] Further, the first projection unit includes a MicroLED (Micro Light Emitting Diode) module.

[0015] Further, the pixel resolution of the MicroLED module is greater than or equal to 25,000.

[0016] In view of the above problems, the present utility model also proposes a vehicle, including: the vehicle headlamp as described in the embodiment of the first aspect of the present utility model.

[0017] According to the vehicle of the embodiment of the present utility model, the first projection unit and the second projection unit are independently arranged, and the first projection unit and the second projection unit can be used at different projection distances. The controller is respectively connected to the first projection unit and the second projection unit. When the controller receives a projection signal, it can control the operating states of the first projection unit and the second projection unit according to the projection signal, enhancing the flexibility and adaptability of the projection module. Through precise control, the optimization and stability of the projection effect are ensured, providing users with a more convenient, efficient and high-quality projection experience. It not only enriches the display form of vehicle headlights and realizes intelligent interaction, but also helps to enhance the overall technological sense and intelligent sense of the vehicle, thereby realizing more efficient and accurate projection control, further enhancing the recognition of the surrounding environment during driving, and thus improving driving safety.

[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 is a schematic structural diagram of a headlight provided by an embodiment of the present utility model;

[0021] Figure 2 is a partial structural diagram of a vehicle lamp (removing the lens assembly) provided by an embodiment of the present utility model;

[0022] Figure 3 is Figure 2 the exploded structural diagram of the vehicle lamp in

[0023] Figure 4 is a schematic structural diagram of a heat-conducting gasket provided by an embodiment of the present utility model;

[0024] Figure 5 is Figure 1 the rear view of the vehicle lamp in

[0025] Figure 6 is a schematic structural diagram of a heat-dissipating fin and a heat-dissipating copper tube provided by an embodiment of the present utility model;

[0026] Figure 7 is a schematic structural diagram of a heat-dissipating copper tube provided by an embodiment of the present utility model;

[0027] Figure 8 is Figure 7 the structural diagram of the heat-dissipating copper tube in

[0028] Figure 9 Structural schematic diagram of the heat dissipation fins provided by an embodiment of the present utility model;

[0029] Figure 10 Assembly schematic diagram of the heat dissipation component (removing the thermal conductive gasket) provided by an embodiment of the present utility model;

[0030] Figure 11 For Figure 10 Exploded structural schematic diagram of the heat dissipation component in

[0031] Figure 12 Structural schematic diagram of the fan housing provided by an embodiment of the present utility model;

[0032] Figure 13 For Figure 12 Structural schematic diagram of the fan housing in another perspective in

[0033] Figure 14 Assembly structural schematic diagram of the lens assembly and the circuit board provided by an embodiment of the present utility model;

[0034] Figure 15 For Figure 14 Exploded structural schematic diagram of the lens assembly and the circuit board in

[0035] Figure 16 Structural schematic diagram of the bracket structure provided by an embodiment of the present utility model;

[0036] Figure 17 For Figure 16 Structural schematic diagram of the bracket structure in another perspective in

[0037] Figure 18 Structural schematic diagram of the lens structure provided by an embodiment of the present utility model;

[0038] Figure 19 Structural schematic diagram of the lens structure provided by an embodiment of the present utility model in another perspective;

[0039] Figure 20 Structural schematic diagram of the lens provided by an embodiment of the present utility model;

[0040] Figure 21 Astigmatism curve graph and distortion curve graph of the lens structure provided by an embodiment of the present utility model;

[0041] Figure 22 Front view schematic diagram of the lens structure and the light source module provided by an embodiment of the present utility model;

[0042] Figure 23Left view schematic diagram of the lens structure and the light source module provided by an embodiment of the present utility model;

[0043] Figure 24 Top view schematic diagram of the lens structure and the light source module provided by an embodiment of the present utility model;

[0044] Figure 25 Schematic diagram of the relationship between the emission field of view corresponding to the light source module and the first optical axis provided by an embodiment of the present utility model;

[0045] Figure 26 Schematic diagram of the light source module provided by an embodiment of the present utility model;

[0046] Figure 27 Grouping schematic diagram of the light source module provided by an embodiment of the present utility model;

[0047] Figure 28 Grouping schematic diagram of the light source module provided by another embodiment of the present utility model;

[0048] Figure 29 Schematic diagram of the structure of the heat insulation sheet and the lens assembly provided by an embodiment of the present utility model;

[0049] Figure 30 Schematic diagram of the structure of the heat insulation sheet provided by an embodiment of the present utility model;

[0050] Figure 31 For Figure 30 Schematic diagram of the structure of the heat insulation sheet in from another perspective;

[0051] Figure 32 Schematic diagram of the structure of the lens structure and the heat insulation sheet provided by an embodiment of the present utility model;

[0052] Figure 33 Structural block diagram of a vehicle headlight according to an embodiment of the present utility model;

[0053] Figure 34 Structural block diagram of a controller according to an embodiment of the present utility model;

[0054] Figure 35 Structural block diagram of a vehicle according to an embodiment of the present utility model.

[0055] Reference numerals:

[0056] 10 - Headlamp; 100 - Lens assembly; 101 - Lens; 102 - First optical axis; L1 - First lens; L2 - Second lens; L3 - Third lens; L4 - Fourth lens; 110 - Lens structure; 111 - First positioning member; 112 - Second positioning member; 113 - Limiting member; 114 - Lens barrel; 115 - Second connecting member; 116 - Limiting member; 120 - Bracket structure; 121 - Base; 1211 - Housing part; 1212 - Light passing opening; 1213 - Weight reduction cavity; 1214 - Rib plate part; 1215 - Accommodating groove; 122 - First connecting member; 1221 - Connecting groove; 123 - Sealing member; 200 - Light source module; 201 - Light emitting device; 210 - First device group; 220 - Second device group; 230 - First part; 240 - Second part; 300 - Circuit board; 311 - Mounting hole; 320 - Heat conducting heat sink; 400 Heat dissipation assembly; 401 - Mounting plate; 4001 - First heat conducting hole; 4002 - Connecting column; 410 - Heat dissipation copper tube; 411 - Heat absorption tube section; 412 - Heat dissipation tube section; 413 - Connecting tube section; 420 - Heat dissipation fins; 421 - Through hole; 422 - Protruding part; 430 - Heat conducting gasket; 431 - Second heat conducting hole; 432 - First avoidance notch; 433 - Avoidance hole; 440 - Heat dissipation fan; 441 - Air inlet; 442 - Air outlet; 443 - Clamping groove; 444 - Wiring harness; 450 - Fan cover; 4501 - Depressed part; 451 - Flow guiding part; 4511 - Bent section; 4512 - Upright section; 452 - Mounting notch; 4521 - Claw; 453 - Extension plate; 4531 - Second avoidance notch; 454 - Wiring notch; 4541 - Wire clamping part; 455 - Baffle; 4551 - Connecting hole; 456 - Guide plate; 457 - First protrusion; 458 - Second protrusion; 600 - Heat insulation sheet; 610 - Main body part; 611 - Light passing hole; 612 - Positioning edge; 6121 - First section; 6122 - Second section; 613 - Connecting groove; 620 - Connecting part; 630 - Positioning part; 631 - Positioning hole; 640 - Weight reduction opening; 700 - Emission field of view; 701 - Center line; 702 - First sub - field of view; 703 - Second sub - field of view;

[0057] 1000 - Vehicle headlamp; 1001 - Lighting module; 1002 - Projection module; 1003 - Controller;

[0058] 10031 - Comparison unit; 10032 - Storage unit; 10033 - Control unit;

[0059] 2000 - Vehicle. Detailed implementation manners

[0060] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model will be described in detail below.

[0061] Reference will be made below to Figures 1 - 35 describe a vehicle headlight and a vehicle according to an embodiment of the present invention.

[0062] First, in combination with Figures 1 - 32 describe the related structure of the vehicle headlight according to an embodiment of the present invention.

[0063] Among them, with the development of vehicle technology, the functions of vehicle headlights have become more abundant. A kind of headlight in the related technology can not only be used for lighting, but also can project, so as to project static patterns or dynamic images on the road surface in front of the vehicle.

[0064] In order to achieve the best projection performance, it is necessary to keep the power of the headlight at a relatively high value. However, in the related technology, the light source module of the headlight is usually integrated on the circuit board, and the high heat energy generated by the light source module is likely to cause damage to the components on the circuit board, thereby reducing the service life of the headlight.

[0065] Based on the above problems, an embodiment of the present invention provides a headlight 10 and a vehicle having the headlight 10. Among them, referring to Figure 1 、 Figure 2 and Figure 3 , the headlight 10 includes a circuit board 300, a light source module 200, a lens assembly 100 and a heat dissipation assembly 400. The light source module 200 is arranged on one side of the circuit board 300. The light source module 200 has a lighting mode and a projection mode, and can project a pattern when the light source module 200 is in the projection mode; the lens assembly 100 is arranged on the light-emitting side of the light source module 200 to receive and diverge the light emitted by the light source module 200. The heat dissipation assembly 400 includes at least one heat dissipation copper tube 410 and a heat conduction gasket 430. The heat conduction gasket 430 is arranged on the surface of the circuit board 300 facing away from the light source module 200, and the heat dissipation copper tube 410 is located on the side of the heat conduction gasket 430 facing away from the circuit board 300 and is in contact with the heat conduction gasket 430. Among them, the heat conduction gasket 430 is provided with a second heat conduction hole 431, the second heat conduction hole 431 is arranged opposite to the light source module 200, and at least one heat dissipation copper tube 410 dissipates heat from the light source module 200 through the second heat conduction hole 431.

[0066] In the present invention, the headlight 10 refers to the lamps on the vehicle. There are many lamps on the vehicle, including headlights, taillights, turn signals, brake lights, projection lights, etc. Among them, the headlight is the most important lighting device on the vehicle. Its function is to illuminate the road and objects in front of the vehicle during night driving to ensure driving safety. The headlight can emit light signals that alternate between high beam and low beam, so as to overtake at night and avoid dazzling the driver of the oncoming vehicle. The headlight 10 provided by the embodiment of the present invention is not limited to the headlight, and can also be other lamps such as taillights and projection lights.

[0067] The light source module 200 is installed on the circuit board 300 as the light source of the headlamp 10. The light source module 200 may include a plurality of micron-level light-emitting points, and each light-emitting point can be independently controlled. For example, it can control a single light-emitting point to emit light or not emit light, or change the light-emitting intensity of a single light-emitting point, etc. Among them, the control method of the light-emitting points is an existing means, which can be realized by a control circuit composed of thin-film transistors TFT, and the present invention will not elaborate on this in detail. The light source module 200 has an illumination mode and a projection mode, and the light-emitting mode of the light-emitting points can be adjusted according to different working modes. For example, in the illumination mode, all the light-emitting points can be controlled to emit white light to maximize the illumination brightness. Another example is that in the projection mode, some of the light-emitting points can be controlled to emit light, so that a specific pattern can be projected. It can be understood that if the light-emitting points in each light source module 200 are composed of red light-emitting points, green light-emitting points, and blue light-emitting points, then various colors of light can be modulated through color combination, and dynamic images can be projected in combination with existing display technologies. Optionally, referring to Figure 26 , the light source module 200 includes a plurality of light-emitting devices 201 arranged in an array, and the light-emitting devices 201 are Mini LEDs or Micro LEDs. Among them, the Mini LED is a light-emitting device 201 with a size in the tens of microns, and the Micro LED is a light-emitting device 201 with a size below ten microns.

[0068] The lens assembly 100 is a lens assembly 100 with a light-gathering effect. The lens assembly 100 is located on the light-emitting side of the light source module 200, which is beneficial to improving the clarity of the projection.

[0069] The heat dissipation assembly 400 is used to dissipate heat from the structures inside the headlamp 10. Specifically, the heat dissipation assembly 400 includes at least one heat dissipation copper tube 410 and a heat conduction gasket 430. The at least one heat dissipation copper tube 410 means that the heat dissipation copper tube 410 can be two, three, four, etc. The heat conduction gasket 430 is located between the circuit board 300 and the heat dissipation copper tube 410, and the heat conduction gasket 430 can improve the heat transfer efficiency between the circuit board 300 and the heat dissipation copper tube 410.

[0070] In the solution provided by the present invention, the heat-conducting gasket 430 is disposed on the surface of the circuit board 300 facing away from the light source module 200. In this way, the heat transferred from the light source module 200 to the circuit board 300 can be transferred to the heat-dissipating copper tube 410 through the heat-conducting gasket 430, and then led out to the outside. Further, a second heat-conducting hole 431 opposite to the light source module 200 is provided on the heat-conducting gasket 430. In this way, the heat-dissipating copper tube 410 can also directly dissipate the heat generated by the light source module 200 by means of the second heat-conducting hole 431. Thus, on the one hand, the heat-dissipating copper tube 410 can indirectly lead out the heat transferred from the light source module 200 to the circuit board 300 by means of the heat-conducting gasket 430, and on the other hand, the heat-dissipating copper tube 410 can directly lead out the heat generated by the light source module 200 by means of the second heat-conducting hole 431 on the heat-conducting gasket 430. It can be seen that through this solution, the high heat energy of the light source module 200 of the headlamp 10 can be effectively led out, the probability of damage to the components on the light source module 200 and the circuit board 300 can be reduced, and the service life of the headlamp 10 can be improved.

[0071] See Figure 2 and Figure 3 , Figure 3 is Figure 2 the schematic explosion structure diagram. In some embodiments, the circuit board 300 is provided with a mounting hole 311, and the mounting hole 311 is disposed opposite to the light source module 200. The heat dissipation assembly 400 further includes a heat-conducting heat sink 320. One side of the heat-conducting heat sink 320 is in contact with the light source module 200 through the mounting hole 311, and the other side is in contact with at least one heat-dissipating copper tube 410 through the second heat-conducting hole 431.

[0072] The shape of the heat-conducting heat sink 320 is similar to the shape of the mounting hole 311. The heat-conducting heat sink 320 can be embedded in the mounting hole 311, for example. Exemplarily, as Figure 2 shown, the mounting hole 311 is rectangular, and the heat-conducting heat sink 320 can be made of a rectangular copper block, aluminum block, etc. The heat-conducting heat sink 320 can conduct the heat of the light source module 200 to the heat-dissipating copper tube 410.

[0073] In order to further improve the heat dissipation effect and heat conduction speed of the light source module 200, in some embodiments, a phase change heat-conducting material can also be coated between the heat-conducting heat sink 320 and the light source module 200, and / or between the heat-conducting heat sink 320 and the heat-dissipating copper tube 410. In this way, the air gap between the heat-conducting heat sink 320 and the light source module 200 and the heat-dissipating copper tube 410 can be reduced, the effective contact area can be increased, an effective heat conduction channel can be established, the contact thermal resistance can be reduced, and the heat dissipation performance of the heat dissipation assembly 400 can be fully exerted. Among them, the thermal conductivity of the phase change heat-conducting material ≥ 6W / mk, and the thickness ≤ 0.1mm. The phase change heat-conducting material can specifically adopt various suitable phase change heat-conducting adhesives. There are various types of phase change heat-conducting adhesives, and designers can flexibly select according to actual needs.

[0074] Please refer to Figure 3 , in some embodiments, the heat dissipation component 400 further includes a mounting plate 401, and the mounting plate 401 is located between the heat dissipation copper tube 410 and the thermal conductive gasket 430. The mounting plate 401 is used to provide support for the circuit board 300 and the heat dissipation copper tube 410. As Figure 3 shown, the mounting plate 401 is further provided with a first heat conduction hole 4001, and the first heat conduction hole 4001 serves as a channel for guiding the heat generated by the light source module 200 to the heat dissipation copper tube 410. The first heat conduction hole 4001 can be polygonal, circular, elliptical, etc., and the present invention does not make specific limitations thereto.

[0075] Please refer to Figures 3 - 5 , the shape of the second heat conduction hole 431 is similar to that of the first heat conduction hole 4001, and the second heat conduction hole 431 can be quadrilateral. In addition, in order to avoid various electrical components on the circuit board 300, such as capacitors, inductors, chips, etc., in some embodiments, the thermal conductive gasket 430 can also be provided with a first avoidance notch 432 and / or avoidance holes 433.

[0076] Furthermore, the orthographic projection of the second heat conduction hole 431 on the mounting plate 401 is located within the first heat conduction hole 4001, that is, the size of the second heat conduction hole 431 is smaller than that of the first heat conduction hole 4001. In this way, part of the thermal conductive gasket 430 can be exposed from the mounting plate 401. Therefore, the thermal conductive gasket 430 can be in direct contact with the heat dissipation copper tube 410 through the first heat conduction hole 4001, and further, the heat dissipation copper tube 410 dissipates the heat of the circuit board 300 collected by the thermal conductive gasket 430.

[0077] The structure of the heat dissipation copper tube 410 can be various. Exemplarily, refer to Figure 3 , Figure 6 and Figure 7 , in some embodiments, the heat dissipation copper tube 410 can include a heat absorption tube section 411, a heat dissipation tube section 412, and a connecting tube section 413. The heat absorption tube section 411 has a first fitting surface, and the first fitting surface is in contact with the thermal conductive gasket 430; the heat dissipation tube section 412 is spaced apart from the heat absorption tube section 411; both ends of the connecting tube section 413 are communicated with the heat absorption tube section 411 and the heat dissipation tube section 412 respectively. The heat generated by the light source module 200 can be sequentially led out of the headlight 10 through the heat absorption tube section 411, the connecting tube section 413, and the heat dissipation tube section 412.

[0078] Since the size of the second heat-conducting hole 431 is smaller than that of the first heat-conducting hole 4001, part of the structure of the thermal gasket 430 will not be blocked by the mounting plate 401, and the thermal gasket 430 can directly contact the first fitting surface of the heat-absorbing pipe segment 411 of the heat-dissipating copper tube 410 corresponding to the first heat-conducting hole 4001, and then the heat on the circuit board 300 absorbed by the thermal gasket 430 is conducted out of the headlight 10 through the connecting pipe segment 413 and the heat-dissipating pipe segment 412, thereby effectively reducing the heat of the circuit board 300.

[0079] It should be noted that, in order to further improve the heat dissipation effect, in some embodiments, the inner wall of the heat dissipation copper tube 410 may be formed with a microchannel, and the interior of the heat dissipation copper tube 410 is a negative pressure environment and filled with a coolant. The coolant may be pure water, or a special coolant such as an alcohol type or a glycerin type. The negative pressure state inside the heat dissipation copper tube 410 can reduce the boiling point of the coolant inside the heat dissipation copper tube 410.

[0080] With such a configuration, when the heat generated by the headlight 10 is transferred to the heat absorbing pipe section 411 of the heat dissipation copper tube 410, the coolant in the heat absorbing pipe section 411 in a negative pressure environment is evaporated by the heat, and flows from the heat absorbing pipe section 411 to the heat dissipation pipe section 412 through the connecting pipe section 413. The temperature of the heat dissipation pipe section 412 is lower than that of the heat absorbing pipe section 411, and the gaseous coolant condenses when it is cold in the heat dissipation pipe section 412 and conducts the heat out of the headlight 10. Subsequently, the coolant in the heat dissipation pipe section 412 can gradually flow back from the heat dissipation pipe section 412 to the heat absorbing pipe section 411 under the capillary action of the microchannels on the inner wall of the heat dissipation copper tube 410. Specifically, since the inner wall of the heat dissipation copper tube 410 has many tiny microchannels, the coolant is adsorbed in these tiny microchannels, and under the combined action of the surface tension, cohesive force and adhesive force of the coolant, it can gradually flow back from the heat dissipation pipe section 412 to the heat absorbing pipe section 411. Therefore, the coolant can circulate back and forth between the heat absorbing pipe section 411 and the heat dissipating pipe section 412, thereby continuously transferring the heat generated by the headlamp 10 from the heat absorbing pipe section 411 to the heat dissipating pipe section 412 and dissipating it outside the headlamp 10. It can be seen that the heat dissipation effect of the headlamp 10 can be further improved through this solution.

[0081] It is understandable that the heat dissipation copper tube 410 may have a variety of structures. In a possible implementation, the heat dissipation copper tube 410 may be bent twice to form a "匚"-shaped structure. In addition, the heat absorption pipe section 411 and the heat dissipation pipe section 412 of the heat dissipation copper tube 410 may also be staggered. Figure 6 and Figure 7, in some embodiments, in the vertical direction, the heat absorption pipe section 411 can be set higher or lower relative to the heat dissipation pipe section 412. Among them, for the connecting pipe section 413 connecting the heat absorption pipe section 411 and the heat dissipation pipe section 412, the connecting pipe section 413 can be set at an angle with both the heat absorption pipe section 411 and the heat dissipation pipe section 412. Exemplarily, referring to Figure 7 , the connecting pipe section 413 can be set perpendicular to both the heat absorption pipe section 411 and the heat dissipation pipe section 412. In addition, it can also be set as an acute angle or an obtuse angle according to actual needs, and the embodiments of the present invention do not make specific limitations on this.

[0082] The heat absorption pipe section 411 can have a fitting plane, and the fitting plane can increase the effective contact area between the heat dissipation copper pipe 410 and other components, thereby improving the heat dissipation efficiency. The heat absorption pipe section 411 can be a cuboid structure or other structures, such as a flat structure. Considering the convenience of processing and manufacturing the heat absorption pipe section 411, the heat dissipation copper pipe 410 can be a circular pipe as a whole, and the heat absorption pipe section 411 is processed into a flat structure with two opposite fitting planes by stamping, extruding, etc. on the heat absorption pipe section 411.

[0083] In some embodiments, as Figures 6 - 8 shown, there are two heat dissipation copper pipes 410, and the heat absorption pipe sections 411 of the two heat dissipation copper pipes 410 are adjacent and arranged side by side up and down. It can be understood that multiple adjacent heat absorption pipe sections 411 are arranged more closely, which can better cover the component to be cooled. And the heat absorption pipe sections 411 are arranged side by side up and down, which is also convenient for the installation and fixation of the heat dissipation copper pipes 410.

[0084] Furthermore, as Figure 7 and Figure 8 shown, in the vertical direction, in the heat dissipation copper pipe 410 located above, the heat dissipation pipe section 412 is higher relative to the heat absorption pipe section 411. In this way, in addition to being affected by the capillary action, the heat dissipation pipe section 412 can accelerate the return flow to the heat absorption pipe section 411 under the action of gravity. Therefore, the coolant in the heat dissipation copper pipe 410 can flow back to the heat absorption pipe section 411 more quickly.

[0085] Please continue to refer to Figure 7 and Figure 8 , in the heat dissipation copper pipe 410 located below, the heat dissipation pipe section 412 is lower relative to the heat absorption pipe section 411. In this way, sufficient space can be maintained between the heat dissipation pipe sections 412 of the upper heat dissipation copper pipe 410 and the heat dissipation pipe sections 412 of the lower heat dissipation copper pipe 410, avoiding mutual influence on the heat dissipation effect.

[0086] As Figures 6 - 9As shown, in some embodiments, the heat dissipation component 400 may further include a plurality of heat dissipation fins 420. The plurality of heat dissipation fins 420 are arranged at intervals and perpendicular to the heat absorption pipe section 411 and the heat dissipation pipe section 412. The heat dissipation fins 420 are in contact with the heat dissipation copper pipe 410. The heat absorption pipe section 411 is located at one end of the heat dissipation fins 420. A through hole 421 for accommodating the heat dissipation pipe section 412 is formed in the heat dissipation fins 420. In this way, the heat of the heat dissipation pipe section 412 can be better dissipated through the heat dissipation fins 420.

[0087] To further improve the heat dissipation effect, the heat absorption pipe section 411 further has a second fitting surface, and the second fitting surface is in contact with the end of the heat dissipation fins 420. That is, the first fitting surface is in contact with the heat conduction gasket 430 and the heat conduction heat sink 320, and the second fitting surface is in contact with one end of the heat dissipation fins 420. In this way, the heat transmitted by the heat conduction gasket 430 absorbed by the heat absorption pipe section 411 and the heat of the light source module 200 can be dissipated to the outside of the headlight 10 through the heat dissipation fins 420. Among them, the heat dissipation copper pipe 410 can be integrally a round pipe. By stamping, extruding, etc. on the heat absorption pipe section 411, the heat absorption pipe section 411 is processed into a flat structure with a first fitting surface and a second fitting surface.

[0088] In some embodiments, as Figure 2 , Figures 10 - 13 As shown, the heat dissipation component 400 may further include a heat dissipation fan 440 and a fan housing 450. The plurality of heat dissipation fins 420 are parallel to each other and arranged at intervals. The heat dissipation fan 440 has an air inlet 441 and an air outlet 442. The heat dissipation fan 440 provides heat dissipation air flow to the gap between adjacent heat dissipation fins 420 through the air outlet 442; the fan housing 450 is connected to the mounting plate 401, the fan housing 450 is disposed around the outer periphery of the heat dissipation fan 440, and the fan housing 450 is provided with at least two flow guiding portions 451 corresponding to the air outlet 442 of the heat dissipation fan 440, so that the heat dissipation air flow converges between the at least two flow guiding portions 451.

[0089] In the embodiments of the present invention, the heat dissipation component 400 further includes a heat dissipation fan 440 and a fan housing 450. A fan housing 450 is disposed on the outer periphery of the heat dissipation fan 440. By providing at least two flow guiding portions 451 on the fan housing 450 corresponding to the air outlet 442 of the heat dissipation fan 440, the heat dissipation air flow generated by the heat dissipation fan 440 can be converged between the flow guiding portions. Such a setting can reduce the loss of the heat dissipation air flow, enable more heat dissipation air flow to act on the gap between the heat dissipation fins 420, and further improve the heat dissipation efficiency of the heat dissipation component 400. It can be seen that through this solution, the heat dissipation effect of the headlight 10 can be further improved, the probability of the headlight 10 being damaged due to overheating can be reduced, and thus the service life of the headlight 10 can be further improved.

[0090] It can be understood that the number of the diversion parts 451 is at least two, that is to say, the number of the diversion parts 451 can be two, three, four, etc. Refer to Figure 13 , two diversion parts 451 can be arranged oppositely. The two oppositely arranged diversion parts 451 can be in a V shape or a horn shape, so as to converge the heat dissipation air flow.

[0091] Exemplarily, refer to Figures 11 - 13 , in some embodiments, the diversion part 451 includes a bent section 4511 and an erected section 4512. The bent section 4511 is connected to the fan housing 450 and is inclined in a direction away from the heat dissipation fan 440. At this time, the lower end of the bent section 4511 can be connected to the fan housing 450 or integrally formed, and the upper end of the bent section 4511 is inclined outward away from the heat dissipation fan 440. The erected section 4512 is fixedly arranged at the end of the bent section 4511 and extends towards the heat dissipation fins 420. The erected section 4512 is slightly shorter than the bent section 4511, and is mainly used for fitting with the bottom surface of the heat dissipation fins 420.

[0092] In order to better connect with the heat dissipation fins 420, refer to Figure 11 , in some embodiments, a plurality of heat dissipation fins 420 are provided with protruding parts 422 on the side close to the fan housing 450; the fan housing 450 is provided with a recessed part 4501 corresponding to the air outlet 442 of the heat dissipation fan 440, and the recessed part 4501 is docked with the protruding part 422. In this way, when installing the fan housing 450, the recessed part 4501 of the fan housing 450 can be buckled on the protruding part 422, so as to tightly seal the gap between the heat dissipation fan 440 and the heat dissipation fins 420, prevent the heat dissipation air flow from overflowing from the gap between the heat dissipation fan 440 and the heat dissipation fins 420, and further improve the heat dissipation effect of the heat dissipation component.

[0093] In addition, considering the convenience of connecting the heat dissipation fan 440 and the fan housing 450 and avoiding relative displacement between the heat dissipation fan 440 and the fan housing 450 during use, the heat dissipation fan 440 and the fan housing 450 can be connected by a snap connection method. There are various snap connection methods. In some embodiments, a snap groove 443 can be arranged on the periphery of the heat dissipation fan 440, and at the same time, an installation notch 452 is provided on the fan housing 450 corresponding to the snap groove 443, and a claw 4521 for snap connection with the snap groove 443 is arranged on the edge of the installation notch 452. In this way, through the claw 4521 on the fan housing 450 and the snap groove 443 on the heat dissipation fan 440, the connection between the heat dissipation fan 440 and the fan housing 450 can be very conveniently realized. When it is necessary to disassemble the fan housing 450, only need to pry up the claw 4521, and the fan housing 450 can be separated from the heat dissipation fan 440.

[0094] Among them, there can be multiple clamping claws 4521 and clamping grooves 443. Exemplarily, referring to Figure 11 , for the heat dissipation fan 440 with four sides, clamping claws 4521 and clamping grooves 443 can be provided corresponding to each side. Of course, two sides can also be selected, and clamping claws 4521 and clamping grooves 443 are provided on both sides. For the clamping claws 4521 and clamping grooves 443 provided on each side, the number of clamping claws 4521 and clamping grooves 443 can also be multiple. For example, referring to Figure 12 and Figure 13 , there can be two clamping claws 4521 which are arranged at intervals. It can be understood that the more the number of clamping claws 4521, the tighter the clamping connection between the heat dissipation fan 440 and the fan housing 450.

[0095] Please continue to refer to Figures 10 - 13 , in order to effectively support the heat dissipation fan 440, in some embodiments, the fan housing 450 bends and extends an extension plate 453 corresponding to the air inlet 441 of the heat dissipation fan 440, and the extension plate 453 abuts against the end of the air inlet 441 of the heat dissipation fan 440. In this way, the fan housing 450 fixedly connected to the mounting plate 401 abuts against the heat dissipation fan 440 through its extension plate 453, and can provide effective support for the heat dissipation fan 440.

[0096] It should be noted that the number and installation position of the extension plate 453 are related to the number and position of the installation notch 452 or the clamping claw 4521 on the fan housing 450. Exemplarily, referring to Figure 12 and Figure 13 , when the number of the installation notch 452 or the clamping claw 4521 is two and they are oppositely arranged at the air inlet 441 of the fan housing 450, the number of the extension plate 453 can be one or two, and they are arranged adjacent to the installation notch 452 or the clamping claw 4521.

[0097] Considering avoiding the influence of the extension plate 453 on the heat dissipation air flow of the air inlet 441 of the fan housing 450, in some embodiments, a second avoidance notch 4531 can also be provided on the extension plate 453.

[0098] Referring to Figure 11 and Figure 13 , the heat dissipation fan 440 is connected to the power supply through its wire harness 444. In order to facilitate wire routing and fix the wire harness, in some embodiments, a wire routing notch 454 can also be provided on the fan housing 450, and a wire clamping part 4541 is formed by extending corresponding to the wire routing notch 454. The wire harness can extend out of the fan housing 450 through the wire routing notch 454 to be connected to the power supply. The wire clamping part 4541 is used to provide a clamping force for the wire harness, as Figure 13As shown, the wire clamping part 4541 can be arranged on the side wall of the wire routing notch 454 and is in a cantilever shape. When the wire harness is clamped to the wire clamping part 4541, the cantilever end of the wire clamping part 4541 can provide a clamping force to the wire harness to fix the wire harness. In addition, setting the second avoidance notch 4531 and the wire routing notch 454 can also reduce the weight of the heat dissipation component 400.

[0099] There can be various ways to fixedly connect the fan housing 450 and the mounting plate 401. For example, bonding, snap connection, screw connection, etc. can be adopted. Refer to Figures 11 - 12 , in some embodiments, connection posts 4002 extending away from the mounting plate 401 can be arranged on one side of the mounting plate 401, and internal threaded holes can be arranged on the connection posts 4002; at the same time, a baffle 455 abutting against the mounting plate 401 is arranged on the periphery of the fan housing 450, and a connection hole 4551 is arranged on the baffle 455 corresponding to the internal threaded hole. In this way, the fan housing 450 and the mounting plate 401 can be fixedly connected by screws passing through the connection hole 4551 and the internal threaded hole.

[0100] In order to quickly install the fan housing 450 and the mounting plate 401, in some embodiments, refer to Figures 11 - 12 , guide plates 456 can also be respectively arranged on both sides of the fan housing 450 corresponding to the connection posts 4002. When installing the fan housing 450 and the mounting plate 401, only need to insert the connection posts 4002 into the two guide plates 456, and push the mounting plate 401 or the fan housing 450 along the guide plates 456 to make the connection posts 4002 abut against the baffle 455, then the fan housing 450 and the mounting plate 401 can be installed in place. It can be understood that along the direction close to the baffle 455, the distance between the two guide plates 456 can be set to gradually decrease. At the same time, the connection posts 4002 can also be correspondingly set to be conical with the end close to the baffle 455 being the small end. In this way, when starting to insert the connection posts 4002 into the two guide plates 456, it can be aligned more easily.

[0101] In addition, refer to Figure 12, in some embodiments, a first protrusion 457 convex toward the connecting post 4002 is formed on the guiding plate 456, and / or a second protrusion 458 convex toward the connecting post 4002 is formed on the fan housing 450. The two first protrusions 457 on the two guiding plates 456 are arranged oppositely. When the connecting post 4002 is inserted into the baffle 455, the two first protrusions 457 can press the connecting post 4002 tightly to prevent the connecting post 4002 from shaking relative to the baffle 455. On the basis of forming the first protrusion 457 convex toward the connecting post 4002 on the guiding plate 456, a second protrusion 458 convex toward the connecting post 4002 can be further formed on the fan housing 450. Under the combined action of the first protrusion 457 and the second protrusion 458, the connecting post 4002 can be further pressed tightly to prevent the connecting post 4002 from shaking relative to the baffle 455 and the fan housing 450.

[0102] Please refer to Figure 1 、 Figures 14 - 17 , in some embodiments, the lens assembly 100 includes a lens structure 110 and a bracket structure 120. The lens structure 110 is configured to receive and diverge the light emitted by the light source module 200. One side of the bracket structure 120 is connected to the lens structure 110, and the other side is connected to the circuit board 300. The bracket structure 120 is configured to support the lens structure 110. By providing the bracket structure 120, on the one hand, the lens structure 110 can be supported, and on the other hand, it can serve as a substrate for fixing the circuit board 300, thereby facilitating improving the strength of the lens assembly 100 and the convenience of connection with other components.

[0103] Furthermore, the bracket structure 120 includes a base 121 and a first connecting member 122 connected to each other. The first connecting member 122 is connected to the lens structure 110, and the base 121 is connected to the circuit board 300. The base 121 includes a housing portion 1211 and a rib portion 1214. The housing portion 1211 is provided with a light passing opening 1212 for passing light, and the housing portion 1211 has a weight reduction cavity 1213. The rib portion 1214 is located in the weight reduction cavity 1213 and is connected to the housing portion 1211.

[0104] In the embodiments of the present invention, the light passing opening 1212 is configured to allow the light emitted by the light source module 200 to pass through. In the embodiments of the present invention, the size and shape of the light passing opening 1212 are not limited as long as the light passing opening 1212 can allow the light emitted by the light source module 200 to pass through. In some embodiments, the light passing opening 1212 is configured as a rectangular hole.

[0105] The rib plate portion 1214 is used to strengthen the structural strength of the housing portion 1211. In the embodiments of the present invention, the structure of the rib plate portion 1214 is not limited, as long as the rib plate portion 1214 can form a support for the housing portion 1211. For example, in the embodiments of the present invention, the rib plate portion 1214 is configured as a grid structure, and the grid bars in the grid structure are connected to each other, which can provide better support for the housing portion 1211.

[0106] The support structure 120 in the embodiments of the present invention supports the lens structure 110. The first connecting member 122 realizes the connection between the support structure 120 and the lens structure 110. The housing portion 1211 is provided with a light passing opening 1212 so that light can pass through the support structure 120 and enter the lens structure 110. After the housing portion 1211 is provided with a weight reduction cavity 1213, the weight of the support structure 120 can be reduced. After the rib plate portion 1214 is located in the weight reduction cavity 1213, the structure of the housing portion 1211 can be strengthened. At this time, the base 121 not only has a lighter weight but also ensures that it has sufficient structural strength.

[0107] Please refer to Figures 15 - 17 , in some embodiments, along the axis direction of the lens structure 110, the side of the housing portion 1211 close to the light source module 200 is recessed away from the light source module 200 to form a weight reduction cavity 1213, and the first connecting member 122 protrudes from the end face of the base 121 away from the light source module 200.

[0108] The side of the housing portion 1211 close to the light source module 200 is recessed to form a weight reduction cavity 1213, which ensures that the side of the housing portion 1211 away from the light source module 200 has a solid structure. At this time, the first connecting member 122 can be protruded from the end face of the base 121 away from the light source module 200. Since the lens structure 110 usually has a relatively long length along the lens assembly 100, that is, the lens structure 110 itself needs to occupy a relatively large space in the length direction of the lens assembly 100. By protruding the first connecting member 122 from the end face of the base 121 away from the light source module 200, the first connecting member 122 and the base 121 are arranged along the axis direction of the lens structure 110, reducing the space occupied by the lens structure 110 in the radial direction of the lens assembly 100.

[0109] The weight reduction cavity 1213 is used to reduce the weight of the base 121. In the embodiments of the present invention, the shape of the weight reduction cavity 1213 is not limited, as long as the weight reduction cavity 1213 can reduce the weight of the base 121. In some embodiments, the housing portion 1211 is made by stamping a sheet, and then the weight reduction cavity 1213 can be surrounded when the housing portion 1211 is manufactured; after the housing portion 1211 is manufactured, the housing portion 1211 is connected to the rib plate portion 1214. In other embodiments of the present invention, the housing portion 1211 and the rib plate portion 1214 are integrally injection-molded, that is, the weight reduction cavity 1213 can be formed in the housing portion 1211 after the base 121 is injection-molded, and the housing portion 1211 and the rib plate portion 1214 are completed in connection.

[0110] Please refer to Figures 15 - 18 , in some embodiments, the lens structure 110 includes a lens barrel 114 and a second connector 115 fixed to the peripheral side of the lens barrel 114. The second connector 115 is fixedly connected to the first connector 122, and the mutual connection between the second connector 115 and the first connector 122 realizes the mutual connection between the lens structure 110 and the bracket structure 120.

[0111] In the embodiments of the present invention, the connection manner between the first connector 122 and the second connector 115 is not limited. For example, in some embodiments, one of the first connector 122 and the second connector 115 has a connection groove 1221, and the other is at least partially located in the connection groove 1221. By snapping the second connector 115 into the connection groove 1221 provided on the first connector 122, or snapping the first connector 122 into the connection groove 1221 provided on the second connector 115, the preliminary connection between the first connector 122 and the second connector 115 is realized; on this basis, the first connector 122 and the second connector 115 can still be further connected by connectors such as bolts and pins to strengthen the connection strength between the first connector 122 and the second connector 115.

[0112] Please refer to Figures 16 - 18, in some embodiments, both the second connecting member 115 and the connecting groove 1221 are arranged along the axial direction of the lens structure 110. The first connecting member 122 has a connecting groove 1221 which communicates with the side wall of the first connecting member 122 away from the base 121. The second connecting member 115 is slidably connected to the groove wall of the connecting groove 1221. When the lens structure 110 and the bracket structure 120 are assembled with the first connecting member 122 having the connecting groove 1221, the second connecting member 115 is slid along the groove wall of the connecting groove 1221 into the connecting groove 1221. Since both the connecting groove 1221 and the second connecting member 115 are arranged along the axial direction of the lens structure 110, at this time, the connecting groove 1221 can guide the second connecting member 115, and can fix the relative positions of the lens structure 110 and the bracket structure 120 when the second connecting member 115 is in the connecting groove 1221.

[0113] In other embodiments, both the first connecting member 122 and the connecting groove 1221 are arranged along the axial direction of the lens structure 110. The second connecting member 115 has a connecting groove 1221 which communicates with the side wall of the second connecting member 115 away from the base 121. The first connecting member 122 is slidably connected to the groove wall of the connecting groove 1221. When the lens structure 110 and the bracket structure 120 are assembled with the second connecting member 115 having the connecting groove 1221, the first connecting member 122 is slid along the groove wall of the connecting groove 1221 into the connecting groove 1221. Since both the connecting groove 1221 and the first connecting member 122 are arranged along the axial direction of the lens assembly 100, at this time the connecting groove 1221 can guide the first connecting member 122, and can fix the relative positions of the lens structure 110 and the bracket structure 120 when the first connecting member 122 is in the connecting groove 1221.

[0114] In some embodiments, the first connecting member 122 has a connecting groove 1221, and the lens structure 110 further includes a limiting member 113 which is fixed on the periphery of the lens barrel 114 and is connected to the end face of the second connecting member 115 away from the base 121. The limiting member 113 can prevent the first connecting member 122 or the second connecting member 115 from completely entering the connecting groove 1221. In some embodiments, the limiting member 113 and the first connecting member 122 form a "T" shape.

[0115] Please refer to Figure 15 and Figure 17, in some embodiments, the end face of the base 121 away from the first connecting member 122 has a receiving groove 1215. The bracket structure 120 further includes a sealing member 123. Part of the sealing member 123 is located in the receiving groove 1215 and protrudes from the end face of the base 121 away from the first connecting member 122. The sealing member 123 can improve the sealing performance between the circuit board 300 and the base 121, and prevent the light emitted by the light source module 200 from escaping through the gap between the circuit board 300 and the base 121.

[0116] Optionally, the sealing member 123 is an elastic sealing ring. Part of the elastic sealing ring is located in the receiving groove 1215. When the circuit board 300 and the base 121 are connected to each other, the circuit board 300 and the base 121 squeeze the elastic sealing ring therebetween, so that the elastic sealing ring is in close contact with the circuit board 300 and the groove wall of the receiving groove 1215.

[0117] Refer to Figure 1 , Figure 2 , Figures 19 - 21 , in some embodiments, the light source module 200 is located on the image source side, and the lens structure 110 is located on the imaging side. The lens structure 110 further includes a plurality of lenses 101 with optical power located in the lens barrel 114. The plurality of lenses 101 sequentially include a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4 along the first optical axis 102 from the imaging side to the image source side. The light from the light source module 200 can sequentially pass through the fourth lens L4, the third lens L3, the second lens L2, and the first lens L1 to reach the imaging side of the lens assembly 100. The lenses 101 in the lens structure 110 are coaxially arranged, and the common axis of the lenses 101 is the first optical axis 102 of the lens structure 110, and each lens 101 can be installed in the lens barrel 114 of the lens structure 110.

[0118] The imaging-side surface S1 and the object-source-side surface S2 of the first lens L1 are both convex near the first optical axis 102; the imaging-side surface S3 of the second lens L2 is convex near the first optical axis 102, and the object-source-side surface S4 is concave near the first optical axis 102; after the first lens L1 converges light rays, the second lens L2 moderately expands the light rays, making the light rays tend to be gentle after entering the lens structure 110. The second lens L2 is designed with a convex-concave surface type, which helps to reduce the principal ray incident angle on the imaging-side surface and the object-source-side surface of the above two lenses, reducing the generation of off-axis aberration; the imaging-side surface S5 and the object-source-side surface S6 of the third lens L3 are both convex near the first optical axis 102, which helps to expand the light rays, and thus is beneficial to the design of lens miniaturization and plays an important role in reducing the lens thickness; the imaging-side surface S7 of the fourth lens L4 is convex near the first optical axis 102, and the object-source-side surface S8 is concave near the first optical axis 102, further shortening the length of the lens structure 110 in the direction of the first optical axis 102. The convex-concave surface design avoids the excessive convergence of light rays on the first optical axis 102, and thus effectively reduces the field curvature and improves the overall imaging quality. Through the reasonable design of the surface types of the first lens L1 to the fourth lens L4 in the embodiment of the present invention, relatively fewer lenses can be used. The lens structure 110 only uses four lenses 101, that is, on the basis of the miniaturization design of the lens assembly 100, the imaging quality is improved.

[0119] Among them, the imaging-side surface S1 and the object-source-side surface S2 of the first lens L1 are both aspherical surfaces; and the imaging-side surface S3 and the object-source-side surface S4 of the second lens L2 are both aspherical surfaces. When at least one side surface of a lens is an aspherical surface, the lens can be said to have an aspherical surface type. The aspherical design can help the lens structure 110 more effectively eliminate aberration and improve the imaging quality. When a lens surface is an aspherical surface, there may be an inflection point on the surface. At this time, the surface type will change along the radial direction. For example, the imaging-side surface S3 of the second lens L2 is convex near the first optical axis 102, and the object-source-side surface S4 is concave near the first optical axis 102. The inflection point surface design can achieve good correction of the field curvature and distortion aberration of the marginal field of view in the lens structure 110 and improve the imaging quality. The imaging-side surface S54 and the object-source-side surface S6 of the third lens L3 are both spherical surfaces; and the imaging-side surface S7 and the object-source-side surface S8 of the fourth lens L4 are both spherical surfaces. The spherical surface type design can reduce the preparation difficulty of the lens and the preparation cost. In the embodiment of the present invention, in order to balance the preparation cost, preparation difficulty, imaging quality, assembly difficulty, etc., the design of each lens surface in the lens structure 110 is a combination of spherical and aspherical surface types.

[0120] The first lens L1 and the second lens L2 are both plastic lenses. The material of the plastic lens can be polycarbonate, gum, etc. The lens made of plastic material can reduce the production cost of the lens structure 110. Moreover, using plastic lenses can not only effectively reduce the aberration of the lens structure 110, reduce the length of the lens structure 110, but also make the overall weight of the lens structure 110 lighter. The third lens L3 and the fourth lens L4 are both glass lenses. The lens made of glass material can withstand higher or lower temperatures and has excellent optical effects and better stability. By using the temperature elimination effect of the glass materials of the third lens L3 and the fourth lens L4, the influence of the temperature change of the projection light on the lens structure 110 can be effectively reduced, and then a better and more stable imaging quality can be maintained. The design of combining glass lenses and plastic lenses can utilize the smaller coefficient of thermal expansion of glass and the larger coefficient of thermal expansion of plastic to adjust the temperature compensation of the entire lens structure 110, and is beneficial to reducing the spherical aberration of the lens structure 110 and optimizing the field curvature and distortion of the lens structure 110.

[0121] In some embodiments, at least one of the imaging-side surface S3 and the image-source-side surface S4 of the second lens L2 is coated with an anti-reflection film. The anti-reflection film can reduce the intensity of the reflected light, thereby increasing the intensity of the transmitted light and making the imaging of the lens assembly 100 clearer. Its principle is to use the interference effect generated by different optical material films to eliminate the incident light and the reflected light, thereby improving the light transmittance. The anti-reflection film is deposited on the surface of the second lens L2, thereby increasing the light-transmitting performance of the second lens L2 to reduce the surface reflection of the second lens L2 and increase the transmittance of the second lens L2.

[0122] Similarly, at least one of the imaging-side surface S5 and the image-source-side surface S6 of the third lens L3 is coated with an anti-reflection film, and at least one of the imaging-side surface S7 and the image-source-side surface S8 of the fourth lens L4 is coated with an anti-reflection film, thereby increasing the light-transmitting performance of the third lens L3 and the fourth lens L4 to reduce the surface reflection of the third lens L3 and the fourth lens L4 and increase the transmittance of the third lens L3 and the fourth lens L4.

[0123] In some embodiments, a light source module 200 emits light on the image-source side of the lens assembly 100, which will increase the temperature inside the lens structure 110, so that the internal lenses are in a high-temperature working environment. Since the fourth lens L4 is closest to the image-source side of the lens assembly 100, that is, the fourth lens L4 is closest to the light source module 200, the temperature tolerance of the fourth lens L4 in the embodiments of the present invention is not lower than 150 °C, and the temperature tolerances of the first lens L1, the second lens L2, and the third lens L3 are not lower than 105 °C, thereby ensuring the normal operation of the four lenses.

[0124] In some embodiments, the lens structure 110 satisfies the conditional expression: 30 mm ≤ f ≤ 40 mm. For example, f can be 30 mm, 31 mm, 32 mm, 35 mm, 36 mm, or 40 mm, etc., where f is the effective focal length of the lens assembly 100. Based on the above embodiments, by reasonably defining the effective focal length of the lens structure 110, the lens assembly 100 can improve the imaging quality while ensuring miniaturization.

[0125] In some embodiments, the lens structure 110 satisfies the conditional expression: -20° ≤ FOV ≤ 20°. FOV can be -20°, -10°, -5°, 5°, 15°, or 20°, etc., where FOV is the maximum field of view angle of the lens structure 110 to meet the usage requirements of the lens structure 110.

[0126] Furthermore, the lens structure 110 satisfies the conditional expression: 40 mm ≤ EDP ≤ 55 mm. For example, EDP can be 40 mm, 43 mm, 45 mm, 46 mm, 50 mm, or 55 mm, etc., where EDP is the entrance pupil diameter of the lens structure 110.

[0127] Based on the above embodiments, by reasonably defining the maximum field of view angle and the entrance pupil diameter of the lens structure 110, the relationship between the focal length and the maximum field of view angle of the lens structure 110 is coordinated. While the lens structure 110 satisfies large image plane and high-quality imaging, by controlling the entrance pupil diameter of the lens structure 110, it is ensured that the lens structure 110 satisfies sufficient image plane brightness in the marginal field of view, preventing the entrance pupil diameter from being too small and being unfavorable for the improvement of the large-aperture lens structure 110 and the image plane brightness. At the same time, it can prevent the entrance pupil diameter from being too large, thereby reducing the astigmatism of the marginal field of view light beam, being beneficial to the improvement of the imaging quality of the lens structure 110, preventing image plane curvature, and being beneficial to improving the lens resolution of the lens structure 110.

[0128] Even further, in some embodiments, the lens structure 110 satisfies the conditional expression: 0.55 ≤ f / EDP ≤ 0.75. For example, f / EDP can be 0.55, 0.6, 0.61, 0.64, 0.68, or 0.75, etc. Based on the above embodiments, by reasonably defining the ratio of the maximum field of view angle and the entrance pupil diameter of the lens structure 110, it is beneficial to realize the miniaturization of the lens structure 110, while taking into account the requirements of design difficulty and field of view angle, providing a combined effect of a large viewing angle and a large aperture. When f / EDP < 0.55, that is, when selecting a small viewing angle with a large aperture, the design difficulty will increase, the diameter of the lens will be further enlarged, which is unfavorable for reducing the tolerance sensitivity and improving the yield. When f / EDP > 0.7, that is, when matching a large viewing angle with a small aperture, the relative illuminance in the peripheral field of view will be insufficient and the resolution will be insufficient, which is thus unfavorable for improving the imaging quality of the lens structure 110.

[0129] In summary, in the embodiments of the present invention, through the reasonable design of the surface shapes and materials of the first lens L1 to the fourth lens L4, and at the same time through the reasonable limitation of the maximum field of view angle and the entrance pupil diameter of the lens structure 110, the balance of the optical path difference between the central field of view and the peripheral field of view is achieved, thereby effectively improving the field curvature value and reducing the distortion of the lens assembly 100, so as to control the distortion of the lens assembly 100 within -5% to 5%, and improving the imaging quality.

[0130] The lens structure 110 will be described in detail below in combination with specific parameters.

[0131] For the structural schematic diagram of the lens structure 110 in the embodiments of the present invention, refer to Figure 20 , the lens structure 110 sequentially includes a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4 along the first optical axis 102 from the imaging side to the image source side. Among them, both the first lens L1 and the second lens L2 are plastic lenses, and both the third lens L3 and the fourth lens L4 are glass lenses.

[0132] The imaging side surface S1 and the image source side surface S2 of the first lens L1 are both convex near the first optical axis 102, and the first lens L1 is a plastic aspherical lens. The imaging side surface S3 of the second lens L2 is convex near the first optical axis 102, and the image source side surface S4 is concave near the first optical axis 102, and the second lens L2 is a plastic aspherical lens. The imaging side surface S5 and the image source side surface S6 of the third lens L3 are both convex near the first optical axis 102, and the third lens L3 is a glass spherical lens. The imaging side surface S7 of the fourth lens L4 is convex near the first optical axis 102, and the image source side surface S8 is concave near the first optical axis 102, and the fourth lens L4 is a glass spherical lens.

[0133] In one embodiment, the reference wavelength for the focal length of each lens is 546.1 nm, and the reference wavelengths for the refractive index and Abbe number are 546.1 nm. In the lens structure 110, f = 30.56 mm, FNO = 0.63, FOV = 9°, TTL = 63.8 mm. Here, f is the effective focal length of the lens structure 110, FNO represents the aperture number, FOV represents the maximum field of view angle of the lens structure 110, and TTL represents the distance from the imaging side to the image source side of the first lens L1 on the first optical axis 102.

[0134] For the aspherical first lens L1 and second lens L2, the aspherical surface satisfies the following aspherical equation:

[0135]

[0136] Wherein, Z is the distance from the corresponding point on the aspherical surface to the plane tangent to the surface vertex, r is the distance from the corresponding point on the aspherical surface to the first optical axis 102, c represents the curvature of the surface at the vertex, K represents the conic constant, and A4, A6, A8, A10, A12, A14, A16, A18, A20 respectively represent the aspherical coefficients of the corresponding orders of the 4th order, 6th order, 8th order, 10th order, and 12th order.

[0137] Figure 21 are the astigmatism curve graph and distortion curve graph in an embodiment.

[0138] The abscissa of the astigmatism curve graph represents the image plane offset, and the ordinate represents the field angle. Figure 21 When the wavelengths given in are 644.00 nm, 620.00 nm, 580.00 nm, 520.00 nm, 500.00 nm, 480.00 nm, 440.00 nm, and 436.00 nm respectively, the image plane offsets of different fields of view are all within -17.5 μm to 10.5 μm, indicating that the spherical aberration of the lens structure 110 in the embodiment of the present invention is small and the imaging quality is good.

[0139] The abscissa of the distortion curve graph represents the distortion rate, and the ordinate represents the field angle. From Figure 21 the distortion curves given in show that when the wavelengths are 656 nm, 486 nm, 435 nm, 387 nm, and 346 nm respectively, the distortion of the lens structure 110 in the embodiment of the present invention is well corrected.

[0140] From Figure 21 the astigmatism curve graph and distortion curve graph in, it can be seen that both the astigmatism and distortion of the lens structure 110 are well controlled, so the lens structure 110 of this embodiment has good imaging quality.

[0141] Please refer to Figures 22 - 25 , in some embodiments, the lens structure 110 has a first optical axis 102. Wherein, the center of the light source module 200 deviates from the first optical axis 102 so that the center line 701 of the emission field of view 700 corresponding to the light source module 200 intersects the first optical axis 102.

[0142] In an embodiment of the present invention, the center of the light source module 200 is disposed offset from the first optical axis 102. In this way, the emission field of view 700 corresponding to the light source module 200 will be deflected relative to the first optical axis 102. When the headlamp in the present invention is applied to a vehicle, the lens structure 110 of the lens assembly 100 can be disposed facing the front of the vehicle, so that the first optical axis 102 extends along the front-rear direction of the vehicle. If the left headlamp of the vehicle uses the headlamp in the present invention, the center of the light source module 200 can be offset to the right relative to the first optical axis 102. In this way, the emission field of view 700 corresponding to the light source module 200 will be deflected to the left relative to the first optical axis 102, and the illumination range of the left front of the vehicle can be broadened in the illumination mode, thereby broadening the illumination range of the entire vehicle. Similarly, if the right headlamp of the vehicle uses the headlamp in the present invention, the center of the light source module 200 can be offset to the left relative to the first optical axis 102. In this way, the emission field of view 700 corresponding to the light source module 200 will be deflected to the right relative to the first optical axis 102, and the illumination range of the right front of the vehicle can be broadened in the illumination mode, thereby broadening the illumination range of the entire vehicle. In this way, the purpose of improving the projection clarity can be achieved, and the driver's viewing range will not be affected.

[0143] In some embodiments, as Figure 25 shown, the emission field of view 700 corresponding to the light source module 200 includes a first sub-field of view 702 and a second sub-field of view 703. The first optical axis 102 extends along a first direction, and the first sub-field of view 702 and the second sub-field of view 703 are respectively disposed on both sides of the first optical axis 102 along a second direction. The first direction is the front-rear direction of the vehicle, and the second direction is the left-right direction of the vehicle. Among them, the field angle α of the first sub-field of view 702 is greater than the field angle β of the second sub-field of view 703.

[0144] It can be understood that, as Figure 26 shown, the light-emitting devices 201 in the light source module 200 can be divided into two parts with the first optical axis 102 as the boundary. Each part contains a plurality of light-emitting devices 201. Denote the part on the right side of the first optical axis 102 as the first part 230, and denote the part on the left side of the first optical axis 102 as the second part 240. Based on the imaging law of the lens assembly 100, the sub-field of view formed by the light emitted by the first part 230 after passing through the lens assembly 100 is located on the left side of the first optical axis 102, and the sub-field of view formed by the light emitted by the second part 240 after passing through the lens assembly 100 is located on the right side of the first optical axis 102.

[0145] In an embodiment of the present invention, the first sub-field of view 702 and the second sub-field of view 703 are respectively the sub-fields of view located on both sides of the first optical axis 102. Among them, the field angle of the first sub-field of view 702 is greater than the field angle of the second sub-field of view 703, which means that the emission field of view 700 of the light source module 200 is deflected relative to the first optical axis 102.

[0146] Furthermore, the field of view angle α of the first sub-field of view 702 is 15 degrees, and the field of view angle of the second sub-field of view 703 is 9 degrees. At this time, the field of view angle β of the emission field of view 700 corresponding to the light source module 200 is 24 degrees. After testing, for the left and right headlights of a vehicle, if the field of view angle of one of them is 24 and it is deflected by 3°, and the field of view angle of the other is 36 degrees and it is not deflected, then when the left and right headlights are used in combination, six lanes can be illuminated, thus well meeting the observation requirements of the driver when driving.

[0147] Furthermore, along the second direction, the distance by which the center of the light source module 200 deviates from the first optical axis 102 is greater than or equal to 1 mm and less than or equal to 2 mm. In this way, it can not only make the emission field of view 700 of the light source module 200 deflect relative to the first optical axis 102, but also ensure that the deflection degree is not too large.

[0148] Furthermore, along the height direction of the vehicle, the distance by which the center of the light source module 200 deviates from the first optical axis 102 is greater than or equal to 0.7 mm and less than or equal to 1.2 mm. In this way, when the headlight 10 is installed on the vehicle, the distance by which the center of the light source module 200 is higher than the first optical axis 102 is 0.7 mm to 1.2 mm. In this way, it is beneficial to make the projected pattern or image fall on the ground in front of the vehicle.

[0149] In some of the embodiments, as Figure 28 shown, a part of the plurality of light-emitting devices 201 constitutes the first device group 210, and another part constitutes the second device group 220. The light-emitting devices 201 in both the first device group 210 and the second device group 220 are plural in number. In the illumination mode, all the light-emitting devices 201 in the first device group 210 emit light, and all the light-emitting devices 201 in the second device group 220 emit light. In the projection mode, all the light-emitting devices 201 in the first device emit light, and all the light-emitting devices 201 in the second device do not emit light.

[0150] In the embodiments of the present invention, the light-emitting devices 201 in the light source module 200 can be divided into a first device group 210 and a second device group 220 according to functional requirements. Among them, the light-emitting devices 201 in the first device group 210 are used for both projection and illumination, while the light-emitting devices 201 in the second device group 220 are only used for illumination. That is, when the light source module 200 is in the illumination mode, the light-emitting devices 201 in both the first device group 210 and the second device group 220 emit light, thereby maximizing the illumination brightness. In the projection mode, only the light-emitting devices 201 in the first device group 210 emit light. In this way, when the light-emitting devices 201 in the first device group 210 are distributed in a specific form, the projected light can form a pattern with a specific form. It can be understood that in the embodiments of the present invention, in the projection mode, the light-emitting devices 201 in the second device group 220 do not emit light, which results in a smaller illumination range in this mode. Therefore, it is applicable to projection when the vehicle is in a parked state.

[0151] In some other embodiments, a part of the plurality of light-emitting devices 201 constitutes the first device group 210, and another part constitutes the second device group 220. The light-emitting devices 201 in both the first device group 210 and the second device group 220 are plural. In the illumination mode, all the light-emitting devices 201 in the first device group 210 emit light, all the light-emitting devices 201 in the second device group 220 emit light, and the luminous intensity of the light-emitting devices 201 in the first device group 210 is equal to the luminous intensity of the light-emitting devices 201 in the second device group 220. In the projection mode, all the light-emitting devices 201 in the first device emit light, all the light-emitting devices 201 in the second device emit light, and the luminous intensity of the light-emitting devices 201 in the first device group 210 is greater than the luminous intensity of the light-emitting devices 201 in the second device group 220.

[0152] In the embodiments of the present invention, the light-emitting devices 201 in the light source module 200 are also divided into a first device group 210 and a second device group 220. Similarly, the light-emitting devices 201 in the first device group 210 are used for both projection and illumination, while the light-emitting devices 201 in the second device group 220 are only used for illumination. However, different from the foregoing embodiments, in the projection mode, the light-emitting devices 201 in both the first device group 210 and the second device group 220 emit light, but the luminous intensities of the two groups of light-emitting devices 201 are different. That is to say, the luminous intensity of the light-emitting devices 201 in the first device group 210 is greater. In this way, while forming the projected pattern, the light-emitting devices 201 in the second device group 220 can also provide illumination. This mode can be used for projection when the vehicle is in a parked state or when the vehicle is in a driving state.

[0153] In one embodiment, the center of the first device group 210 is located on the first optical axis 102. With such an arrangement, in the projection mode, the projected pattern or image will be directly in front of the headlamp 10, rather than at the center position in front of the vehicle.

[0154] In another embodiment, the center of the first device group 210 deviates from the first optical axis 102. With such an arrangement, in the projection mode, the projected pattern or image will deviate from directly in front of the headlamp. For example, the projected pattern or image can be at the center position in front of the vehicle.

[0155] Referring to Figure 14 、 Figure 15 and Figure 29 , in some embodiments, the headlamp 10 further includes a heat insulation sheet 600. The heat insulation sheet 600 is located between the circuit board 300 and the lens assembly 100 and is connected to the lens assembly 100. The heat insulation sheet 600 has a light passing hole 611 corresponding to the light source module 200.

[0156] In the embodiments of the present invention, when the headlamp 10 works, the circuit board 300 supplies power to the light source module 200 to enable the light source module 200 to emit light. The light emitted by the light source module 200 passes through the light passing hole 611 on the heat insulation sheet 600 and enters the lens assembly 100. After being diverged by the lens assembly 100, an illumination or projection area is formed in front of the headlamp 10. Since the light source module 200 generates heat during operation, at this time, the heat insulation sheet 600 can reduce the heat transferred from the light source module 200 to the lens assembly 100, and can block the stray light generated by the light source module 200 from entering the lens assembly 100 and affecting the illumination quality of the headlamp 10 module.

[0157] When the headlamp 10 is not working, some external light will enter the headlamp 10 module through the lens assembly 100. Since the lens assembly 100 has a diverging effect on the light emitted by the light source module 200, the lens assembly 100 has a focusing effect on the light entering the headlamp 10 module from the outside, resulting in the external natural light entering the headlamp 10 module being converged into light with higher energy. This light can release a large amount of heat. At this time, the heat insulation sheet 600 can reduce the partial external natural light entering the headlamp 10 module from irradiating the circuit board 300 and the light source module 200, reduce the damage caused by the external natural light entering the headlamp 10 to the circuit board 300 and the light source module 200, and extend the service life of the headlamp 10 module.

[0158] It can be understood that in the embodiments of the present invention, the heat insulation sheet 600 can adopt two methods of physical light extinction and chemical light extinction. Physical light extinction is to add a light extinction agent to the paint, so that during the film formation process of the paint on the surface of the heat insulation sheet 600, the paint precipitates to the surface of the coating, making the surface of the coating uneven, increasing the scattering of light and reducing reflection. Chemical light extinction is to obtain low gloss by introducing some light-absorbing structures or groups such as polypropylene grafted substances in the paint.

[0159] In some embodiments, the heat insulation sheet 600 is provided with a light-absorbing layer at least on the side facing the lens assembly 100. After the heat insulation sheet 600 is provided with a light-absorbing layer on the side facing the lens assembly 100, the ability of the heat insulation sheet 600 to absorb the light entering the headlight 10 module from the outside can be improved, and further protect the circuit board 300 and the light source module 200 by the heat insulation sheet 600; after the heat insulation sheet 600 is provided with a light-absorbing layer on the side facing away from the lens assembly 100, the heat insulation sheet 600 can absorb part of the stray light generated by the light source module 200, and further improve the lighting quality of the headlight 10. In the embodiments of the present invention, light-absorbing layers are provided on the outer surfaces of the heat insulation sheet 600.

[0160] In some embodiments, the light-absorbing layer is a black zinc coating. The black zinc coating has good light extinction ability and solar heat absorption ability, which helps the heat insulation sheet 600 to eliminate the stray light emitted by the light source module 200 and the external natural light, and absorb the stray light emitted by the light source module 200 and the external natural light. The light-absorbing layer in the embodiments of the present invention can also be configured with other light extinction and / or light absorption materials, such as, light extinction resin, etc.

[0161] Please refer to Figure 30 and Figure 31 , in some embodiments, the heat insulation sheet 600 includes a main body portion 610 and a connecting portion 620. The main body portion 610 has a light passing hole 611; the connecting portion 620 is connected to the main body portion 610, and the connecting portion 620 is connected to the lens assembly 100.

[0162] The main body portion 610 and the light source module 200 are axially spaced apart from each other in the lens assembly 100, and there is no direct contact between them. The heat generated after the external natural light irradiates on the heat insulation sheet 600 will only be able to spread through the air, and the heat insulation sheet 600 is connected to the lens assembly 100 through the connecting portion 620, which can reduce the heat transferred from the heat insulation sheet 600 to the light source module 200.

[0163] To ensure the blocking of the external natural light by the heat insulation sheet 600, in some embodiments, along the axis of the lens structure 110, the main body portion 610 coincides with the end of the lens structure 110 close to the light source module 200. In this way, the external natural light will only be able to irradiate on the heat insulation sheet 600.

[0164] Please refer to Figures 29 - 32, in some embodiments, a positioning edge 612 is formed at a partial edge of the main body portion 610. The lens structure 110 is provided with a first positioning member 111, and the first positioning member 111 abuts against the positioning edge 612. When assembling the heat insulation sheet 600 and the lens assembly 100, the first positioning member 111 abuts against the positioning edge 612 to achieve the positioning of the heat insulation sheet 600.

[0165] In the embodiment of the present invention, the first positioning member 111 can be configured as a positioning bump, and any side wall of the positioning bump abuts against the positioning edge 612. The shape of the side of the positioning bump that abuts against the positioning edge 612 should be set corresponding to the shape of the positioning edge 612. Preferably, any side wall of the positioning bump can be arranged to fit the positioning edge 612.

[0166] Please refer to Figures 29 - 32 , in some embodiments, the heat insulation sheet 600 further includes a positioning portion 630. The positioning portion 630 is connected to the main body portion 610, and the positioning portion 630 has a positioning hole 631; the lens assembly 100 is provided with a second positioning member 112, and the second positioning member 112 is inserted into the positioning hole 631; when assembling the heat insulation sheet 600 and the lens assembly 100, the second positioning member 112 is inserted into the positioning hole 631, which can guide the assembly of the heat insulation sheet 600 and the lens assembly 100, and facilitate the subsequent connection between the heat insulation sheet 600 and the lens assembly 100.

[0167] Please refer to Figure 29 and Figure 30 , in some embodiments, the second positioning member 112 is configured as a positioning post, and after the positioning post is inserted into the positioning hole 631, the positioning post fits against the hole wall of the positioning hole 631.

[0168] Please refer to Figures 29 - 32 , in some embodiments, the heat insulation sheet 600 can be configured as a centrosymmetric structure, that is, the main body portion 610 is configured as a centrosymmetric structure, the number of the positioning portions 630 is two, the two positioning portions 630 are centrosymmetrically arranged with respect to the center of the main body portion 610, the number of the connecting portions 620 is two, and the two connecting portions 620 are centrosymmetrically arranged with respect to the center of the main body portion 610.

[0169] Please refer to Figures 29 - 32 , in some embodiments, the main body portion 610 extends toward the circuit board 300 relative to the connecting portion 620 to form an engagement groove 613. The end portion of the lens structure 110 close to the circuit board 300 is located in the engagement groove 613 and is connected to the heat insulation sheet 600. The lens bracket 120 is connected to the lens structure 110 and is connected to the circuit board 300.

[0170] After the main body portion 610 forms the connection groove 613, one end of the lens structure 110 is located in the connection groove 613, that is, at least part of the end of the lens structure 110 close to the light source module 200 is wrapped by the groove wall of the connection groove 613. When external natural light enters the headlight 10 module through the lens structure 110, the groove wall of the connection groove 613 can better block the external natural light and absorb the heat of the external natural light.

[0171] Please refer to Figure 30 and Figure 31 , in some embodiments, the heat insulation sheet 600 has a weight reduction opening 640. The weight reduction opening 640 penetrates the heat insulation sheet 600 at the bending portion of the main body portion 610 and the connecting portion 620, and the weight reduction opening 640 penetrates the heat insulation sheet 600 at the bending portion of the bottom wall and the side wall of the connection groove 613.

[0172] The weight reduction opening 640 can reduce the weight of the heat insulation sheet 600. During the manufacturing process of the heat insulation sheet 600, it is necessary to bend the sheet metal part to form the main body portion 610, the connecting portion 620 and the positioning portion 630. Since the weight reduction opening 640 is located at the position where the sheet metal part needs to be bent, it is convenient to bend the sheet metal part to form the heat insulation sheet 600.

[0173] In order for the weight reduction opening 640 not to affect the light extinction and heat absorption capabilities of the heat insulation sheet 600, in some embodiments, the weight reduction opening 640 coincides with one end of the lens structure 110 located in the connection groove 613, that is, the lens structure 110 can abut against the bottom wall of the connection groove 613 so that the end of the lens structure 110 blocks the weight reduction opening 640, preventing the light emitted by the light source module 200 and the external natural light from passing through the weight reduction opening 640.

[0174] Please refer to Figure 16 and Figure 29 , in some embodiments, the lens bracket 120 is provided with a light passing opening 1212. The heat insulation sheet 600 is located in the light passing opening 1212, and the lens bracket 120 protects the heat insulation sheet 600, especially the black zinc coating on the heat insulation sheet 600, to ensure the light extinction and heat absorption capabilities of the heat insulation sheet 600.

[0175] Another embodiment of the present invention provides a vehicle, which includes a left headlight and a right headlight. Among them, at least one of the left headlight and the right headlight is the headlight described in the first aspect. Exemplarily, the vehicle can be a household car, a commercial vehicle or a freight vehicle, etc. The drive type of the vehicle is not limited, and it can be a fuel vehicle, an electric vehicle, or a hybrid vehicle.

[0176] The vehicle according to the embodiment of the present invention has the same application concept as the headlight in the above embodiment. Therefore, the vehicle according to the embodiment of the present invention can obtain the technical effects possessed by the headlight in the above embodiment.

[0177] It can be understood that the vehicle includes a left headlight and a right headlight. Among them, one of the left headlight and the right headlight adopts the headlight in the above embodiment, or both the left headlight and the right headlight adopt the headlight in the above embodiment.

[0178] In one embodiment, the left headlight is the headlight in the above embodiment, and the center of the light source module 200 is located at the upper right of the first optical axis 102. With such a setting, the emission field of view 700 corresponding to the light source module 200 deflects to the left, which can widen the illumination range in front of the left side of the vehicle. Without deflection of the illumination field of view of the right headlight, the illumination range of the entire vehicle can be widened. In addition, the light source module 200 is located above the first optical axis 102, which can ensure that the projected pattern or image is formed on the ground.

[0179] In another embodiment, the right headlight is the headlight, and the center of the light source module 200 is located at the upper left of the first optical axis 102. With such a setting, the emission field of view 700 corresponding to the light source module 200 deflects to the right, which can widen the illumination range in front of the right side of the vehicle. Without deflection of the illumination field of view of the left headlight, the illumination range of the entire vehicle can be widened. In addition, the light source module 200 is located above the first optical axis 102, which can ensure that the projected pattern or image is formed on the ground.

[0180] Figure 33 It is a structural block diagram of a vehicle headlight according to an embodiment of the present invention. As Figure 33 shown, the vehicle headlight 1000 includes an illumination module 1001, a projection module 1002, and a controller 1003.

[0181] Among them, the projection module 1002 includes a first projection unit and a second projection unit; the first projection unit and the second projection unit are independently arranged, and the first projection unit and the second projection unit are adapted to be used at different projection distances; the controller 1003 is respectively connected to the first projection unit and the second projection unit, and the controller 1003 is used to receive projection signals and control the operating states of the first projection unit and the second projection unit according to the projection signals.

[0182] In a specific embodiment, the projection module 1002 is composed of two independently operating but mutually cooperative projection units, namely the first projection unit and the second projection unit. These two projection units can each adapt to different projection distance requirements, thus significantly improving the projection flexibility and coverage range.

[0183] Specifically, the first projection unit may be used for short-distance or medium-to-long-distance projection, providing higher-resolution image quality and being suitable for scenarios that require fine display effects, such as near-field road signs or in-vehicle entertainment displays. The second projection unit, on the other hand, is suitable for long-distance projection. By utilizing its powerful light output ability and optimized optical design, etc., it ensures that clear and bright images can be presented even at a relatively far distance, and is suitable for far-field lighting or long-distance information prompts.

[0184] The controller 1003 is respectively connected to the first projection unit and the second projection unit and can receive projection signals from external devices or systems. Once the projection signal is received, the controller 1003 will immediately perform analysis and processing, and according to the information carried in the projection signal and preset parameters, intelligently adjust the operating states of the first projection unit and the second projection unit. For example, it adjusts the operating states of the first projection unit and the second projection unit according to the target projection distance to ensure the best projection effect under different distances and environments. Through such collaborative work, the projection module 1002 can fully meet the projection requirements in different scenarios, enhance the recognition of road signs, bring a more flexible, efficient, and convenient projection experience to users, thereby improving the safety of vehicle driving. It can also enrich the display form of vehicle headlights and achieve intelligent interaction, which helps to enhance the overall technological and intelligent sense of the vehicle.

[0185] Thus, for the vehicle headlight 1000 according to the embodiment of the present invention, the first projection unit and the second projection unit are independently arranged, and the first projection unit and the second projection unit can be used at different projection distances. The controller is respectively connected to the first projection unit and the second projection unit. When the controller 1003 receives the projection signal, it can control the operating states of the first projection unit and the second projection unit according to the projection signal, enhancing the flexibility and adaptability of the projection module 1002. Through precise control, it ensures the optimization and stability of the projection effect, provides a more convenient, efficient, and high-quality projection experience for users, not only enriches the display form of vehicle headlights and achieves intelligent interaction, but also helps to enhance the overall technological and intelligent sense of the vehicle, thereby realizing more efficient and accurate projection control, and further enhancing the recognition of the surrounding environment during driving, thus improving driving safety.

[0186] In an embodiment of the present invention, the projection signal includes the target projection distance; the controller 1003 is used to control the first projection unit to turn on for projection when the target projection distance does not exceed the set distance; the controller 1003 is used to control the second projection unit to turn on for projection when the target projection distance reaches or exceeds the set distance.

[0187] In a specific embodiment, the controller 1003 can control the operating states of the first projection unit and the second projection unit according to the target projection distance. Specifically, when the controller 1003 receives a projection signal, that is, when the controller 1003 controls the first projection unit and the second projection unit based on the target projection distance, it will control the operating states of the first projection unit and the second projection unit according to the comparison result between the target projection distance and the set distance.

[0188] If the target projection distance does not exceed this set distance, the controller 1003 will automatically select the first projection unit for projection. Among them, the first projection unit is more suitable for near or medium-to-far distance projection and can provide a finer and higher-resolution image quality. On the contrary, if the target projection distance reaches or exceeds the set distance, the controller 1003 will switch to the second projection unit for projection to utilize its stronger light output ability and long-distance projection optimization to ensure a clear and bright projection effect even at a long distance. Such a design greatly improves the flexibility and adaptability of the projection module 1002, can automatically select the most suitable projection unit according to actual needs, thereby realizing more efficient and accurate projection control, and further enhancing the recognition of the surrounding environment during driving, thus improving driving safety.

[0189] In an embodiment of the present invention, as Figure 34 shown, the controller 1003 at least includes a comparison unit 10031, a storage unit 10032, and a control unit 10033; the storage unit 10032 is used to store the set distance; the comparison unit 10031 is used to compare the magnitudes of the target projection distance and the set distance; the control unit 10033 is used to control the operating states of the first projection unit and the second projection unit according to the comparison result output by the comparison unit.

[0190] In a specific embodiment, the storage unit 10032 is used to store a set distance, where the set distance is used as a reference for judging the proximity of the target projection distance. When the target projection distance information included in the projection signal is received by the controller 1003, the comparison unit 10031 is immediately activated to precisely compare the target projection distance with the set distance in the storage unit 10032. The comparison result between the set distance and the target projection distance will be transmitted to the control unit 10033, and the control unit 10033 will then intelligently control the operating states of the first projection unit and the second projection unit according to this result. If the target projection distance is less than the set distance, the control unit 10033 will issue an instruction to control the first projection unit to turn on and project; if the target projection distance reaches or exceeds the set distance, the control unit 10033 will issue an instruction to control the second projection unit to start and project. In other words, when the detected target projection distance is small, for example, in the case of a short distance or a medium-to-long distance, the control unit 10033 will control the first projection unit to start. When the detected target projection distance is large, the control unit 10033 will control the second projection unit to start to meet the projection requirements for a farther distance. In this way, according to the comparison result between the target projection distance and the set distance, that is, the proximity of the target projection distance, the controller 1003 can better control the projection module 1002 to quickly and accurately respond to various projection distance requirements, ensuring full-scenario projection coverage of short-distance scenarios, medium-to-long distance scenarios, and long-distance scenarios, thereby improving the driving experience.

[0191] In an embodiment of the present invention, the resolution of the projection image of the first projection unit is higher than that of the second projection unit.

[0192] In a specific embodiment, the resolution of the projection image of the first projection unit is higher than that of the second projection unit, so that the operating states of the first projection unit and the second projection unit can be controlled based on the specific application scenario.

[0193] Among them, the first projection unit having a higher resolution of the projection image means that the first projection unit can present more delicate and clear image details, which is very suitable for occasions that require high-resolution display, such as short-distance scenarios and medium-to-long distance scenarios. In contrast, although the second projection unit may have advantages in light output ability or long-distance projection effect, its resolution of the projection image is relatively low, which is suitable for application scenarios with not particularly high requirements for resolution, such as long-distance scenarios. Such a design not only improves the flexibility and adaptability of the projection module 1002, but also ensures that the driver can select the appropriate projection unit according to actual needs to achieve the best visual effect.

[0194] In an embodiment of the present invention, the brightness of the projection image of the second projection unit is higher than that of the first projection unit, and the projection range of the second projection unit is larger than that of the first projection unit.

[0195] In a specific embodiment, the brightness of the projection image of the second projection unit is higher than that of the first projection unit, and the projection range of the second projection unit is also larger than that of the first projection unit. That is, the second projection unit can display a higher brightness of the projection image, enhancing the visual experience of the user when viewing and making the projection image more vivid. At the same time, the second projection unit also expands the projection range. Compared with the first projection unit, the second projection unit can cover a wider display area. For example, when the target projection distance is relatively large, the second projection unit can be controlled to start and project. By significantly increasing the brightness of the projection image, the second projection unit brings a more vivid and lively visual experience to the user, making the projection content more engaging. At the same time, its enhanced projection range ability enables it to easily cover a wider display area even at a large target projection distance, thus meeting the projection requirements in various scenarios and further improving the driving experience.

[0196] In an embodiment of the present invention, the first projection unit includes a DLP module.

[0197] In a specific embodiment, the first projection unit uses a DLP module as its core component. The DLP module converts the projection signal into a digital image through advanced digital processing technology, and finally projects a bright, clear, and colorful image, enhancing the brightness and contrast of the projection image.

[0198] In an embodiment of the present invention, the pixel resolution of the DLP module is greater than or equal to 400,000.

[0199] In a specific embodiment, the adopted DLP module has the characteristic of high pixel resolution. Its pixel resolution is greater than or equal to 400,000, which means that the DLP module can present extremely delicate and clear images. Each pixel point can accurately express color and brightness information, thus greatly enhancing the detail expression and visual impact of the projection image. The high pixel resolution not only enables the projection image to remain clear when viewed at a close distance but also maintains the fineness of the image at a large projection size, meeting the user's requirements for high-quality projection images, thereby providing excellent projection effects and further improving the driving experience.

[0200] In an embodiment of the present invention, the first projection unit includes a MicroLED module.

[0201] In a specific embodiment, the first projection unit integrates a MicroLED module, which can improve the performance and efficiency of the projection module 1002. Among them, the MicroLED module, with its tiny light-emitting units, high brightness, high contrast, long lifespan, and excellent color saturation, can achieve a clearer, more delicate, and color-rich projection effect. By precisely controlling the light emission of each LED micro-unit, the first projection unit can not only reduce energy consumption while ensuring the picture quality but also greatly enhance the reliability and durability of the projection module 1002, improving the user's visual experience.

[0202] In an embodiment of the present utility model, the pixel resolution of the MicroLED module is greater than or equal to 25,000.

[0203] In a specific embodiment, the MicroLED module exhibits an extremely high pixel resolution, with a value greater than or equal to 25,000. Among them, each pixel point is extremely tiny and independently controllable, thus achieving precise restoration of picture details. The high pixel resolution not only improves the quality of the visual experience, making the image more vivid and the colors more rich, thus meeting the user's pursuit of high-quality projection effects and improving the user experience.

[0204] Therefore, for the vehicle headlight 1000 according to the embodiment of the present utility model, the first projection unit and the second projection unit are independently arranged, and the first projection unit and the second projection unit can be used at different projection distances. The controller is respectively connected to the first projection unit and the second projection unit. When the controller 1003 receives a projection signal, it can control the operating states of the first projection unit and the second projection unit according to the projection signal, enhancing the flexibility and adaptability of the projection module 1002. Through precise control, it ensures the optimization and stability of the projection effect, providing the user with a more convenient, efficient, and high-quality projection experience. It not only enriches the display form of the vehicle headlight and realizes intelligent interaction but also helps to enhance the overall technological sense and intelligence of the vehicle, thus achieving more efficient and accurate projection control, further enhancing the recognition of the surrounding environment during driving, and thereby improving driving safety.

[0205] A further embodiment of the present utility model also discloses a vehicle.

[0206] In some embodiments, as Figure 35 shown, the vehicle 2000 includes: the vehicle headlight 1000 described in any one of the above embodiments of the present utility model.

[0207] In a specific embodiment, the vehicle can be any one of a pure electric vehicle, a fuel vehicle, or a hybrid vehicle.

[0208] According to the vehicle of the embodiment of the present utility model, the first projection unit and the second projection unit are independently arranged, and the first projection unit and the second projection unit can be used at different projection distances. The controller is respectively connected to the first projection unit and the second projection unit. When the controller 1003 receives a projection signal, it can control the operating states of the first projection unit and the second projection unit according to the projection signal, enhancing the flexibility and adaptability of the projection module 1002. Through precise control, the optimization and stability of the projection effect are ensured, providing users with a more convenient, efficient and high-quality projection experience. It not only enriches the display form of the vehicle headlight and realizes intelligent interaction, but also helps to enhance the overall technological sense and intelligent sense of the vehicle, thus realizing more efficient and accurate projection control, further enhancing the recognition of the surrounding environment during driving, and thus improving driving safety.

[0209] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0210] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A vehicle headlight, characterized in that: The vehicle headlight comprises a lighting module for lighting and a projection module for projection, wherein the projection module comprises a first projection unit and a second projection unit; The first projection unit and the second projection unit are independently arranged, and the first projection unit and the second projection unit are suitable for use at different projection distances; A controller is connected to the first projection unit and the second projection unit respectively, and is used to receive a projection signal and control the operation status of the first projection unit and the second projection unit according to the projection signal.

2. The vehicle headlight according to claim 1, characterized in that: The projection signal includes a target projection distance; The controller is used to control the first projection unit to turn on for projection when the target projection distance does not exceed the set distance; The controller is used for controlling the second projection unit to turn on for projection when the target projection distance reaches or exceeds the set distance.

3. The vehicle headlight according to claim 2, characterized in that: The controller at least includes a comparison unit, a storage unit and a control unit; The storage unit is used to store the set distance; The comparison unit is used to compare the target projection distance with the set distance; The control unit is used to control the operating states of the first projection unit and the second projection unit according to the comparison result output by the comparison unit.

4. The vehicle headlight according to claim 1 or 2, characterized in that: The resolution of the projected image of the first projection unit is higher than that of the second projection unit.

5. The vehicle headlight according to claim 1 or 2, characterized in that: The brightness of the projected image of the second projection unit is higher than that of the first projection unit, and the projection range of the second projection unit is larger than that of the first projection unit.

6. The vehicle headlight according to claim 1 or 2, characterized in that: The first projection unit includes a DLP module.

7. The vehicle headlight according to claim 6, characterized in that: The pixel resolution of the DLP module is greater than or equal to 400,000.

8. The vehicle headlight according to claim 1 or 2, characterized in that: The first projection unit includes a MicroLED module.

9. The vehicle headlight according to claim 8, characterized in that: The pixel resolution of the MicroLED module is greater than or equal to 25,000.

10. A vehicle, characterized in that: Comprising the vehicle headlight as described in any one of claims 1-9.

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