Control Method, Device, Vehicle and Computer Readable Storage Medium for Vehicle Headlights

Abstract

The present invention discloses a control method, device, vehicle and computer-readable storage medium for vehicle headlights. Among them, the vehicle headlights include an illumination module for lighting and a projection module for projection. The control method for vehicle headlights includes: when it is determined that the vehicle has a lane-changing intention, obtaining lane-changing information; based on the lane-changing information, controlling the projection module to project a projection image for guiding the user to change lanes in front of the vehicle, which is convenient for the driver to clearly view the road conditions ahead and the obstacles in the blind area in a timely manner. At the same time, it can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety; thus, by using the control method for vehicle headlights provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals under night or poor visibility conditions be solved, but also by illuminating the lane-changing section, a more intuitive and accurate visual aid is provided for the driver, which helps to enhance the overall technological sense and intelligence of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a control method, device, vehicle and computer-readable storage medium for vehicle headlights. Background Art

[0002] In the modern traffic environment, vehicle driving safety has attracted increasing attention from all sectors of society. Especially when driving at night, it is often difficult for drivers to accurately judge the road conditions ahead and the obstacles in the blind area when changing lanes, increasing the risk of traffic accidents. At the same time, other vehicles, pedestrians and non-motor vehicles often fail to avoid in time because they cannot obtain the lane-changing intention of the vehicle in time, further exacerbating the potential safety hazards in traffic.

[0003] In the prior art, the lane-changing intention of the vehicle is usually conveyed to surrounding vehicles and pedestrians through the turn signal. However, although it improves traffic safety to a certain extent, its range of action is limited. Especially at night or in complex road conditions, its warning effect is often not significant. In addition, the turn signal can only provide simple direction indication and cannot directly illuminate the lane-changing section. The driver still needs to rely on his own vision to judge when changing lanes, increasing the operation difficulty and potential safety hazards. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the object of the present invention is to provide a control method, device, vehicle and storage medium for vehicle headlights.

[0005] A control method for vehicle headlights provided by the present invention, the vehicle headlights include a lighting module for lighting and a projection module for projection, and the control method for the vehicle headlights includes: when it is determined that the vehicle has a lane-changing intention, obtaining lane-changing information; based on the lane-changing information, controlling the projection module to project a projection image for guiding the user to change lanes in front of the vehicle when the vehicle is driving.

[0006] According to the control method for vehicle headlights of the embodiment of the present invention, when the vehicle changes lanes, the projection module can be controlled to project a projection image for guiding the user to change lanes in front of the vehicle based on the lane-changing information, so that the driver can clearly view the road conditions ahead and the obstacles in the blind area in time. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety; thus, by using the control method for vehicle headlights provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals at night or under poor visibility conditions be solved, but also by illuminating the lane-changing section, a more intuitive and accurate visual aid is provided for the driver, which helps to enhance the overall sense of technology and intelligence of the vehicle.

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

[0008] Further, the lane change information includes a lane change direction, and based on the lane change information, controlling the projection module to project a projection image for guiding the user to change lanes in front of the vehicle traveling includes: planning a lane change path based on the lane change direction, and controlling the projection module to project the projection image along the lane change path in front of the vehicle traveling.

[0009] Further, the lane change path includes a first lane change path for changing lanes to the left or a second lane change path for changing lanes to the right, and the projection image includes a first projection image projected along the first lane change path and a second projection image projected along the second lane change path.

[0010] Further, the projection image includes a projection beam that covers the lane change path and completely matches the lane change path.

[0011] Further, the projection beam is a monochromatic projection beam.

[0012] Further, the monochromatic projection beam is a white projection beam.

[0013] Further, the projection image includes two projection lines, and the two projection lines respectively correspond to and match the two side edges of the lane change path.

[0014] Further, when the turn signal of the vehicle is triggered and / or the steering wheel angle of the vehicle is greater than a preset angle, it is determined that the vehicle has a lane change intention.

[0015] In view of the above existing problems, the present invention further provides a control device for a vehicle headlamp. The vehicle headlamp includes an illumination module for illumination and a projection module for projection. The control device for the vehicle headlamp includes: an acquisition module, configured to acquire lane change information when it is determined that the vehicle has a lane change intention; and a control module, configured to control the projection module to project a projection image for guiding the user to change lanes in front of the vehicle traveling based on the lane change information.

[0016] The control device of a vehicle headlamp according to an embodiment of the present invention implements the control method of the vehicle headlamp in the above embodiment of the present invention. When the vehicle changes lanes, based on the lane change information, it can control the projection module to project a projection image for guiding the user to change lanes in front of the vehicle, so that the driver can timely and clearly view the road conditions ahead and the obstacles in the blind area. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time, improving traffic safety. Thus, by using the control method of the vehicle headlamp provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals under night or poor visibility conditions be solved, but also by illuminating the lane change section, a more intuitive and accurate visual aid is provided for the driver, which helps to enhance the overall technological sense and intelligence of the vehicle.

[0017] In view of the above existing problems, the present invention also proposes a vehicle, including: the control device of the vehicle headlamp as described in the above second aspect embodiment of the present invention, or, the vehicle includes: a processor, a memory, and a vehicle headlamp control program stored on the memory and executable on the processor. When the vehicle headlamp control program is executed by the processor, it implements the control method of the vehicle headlamp as described in the above first aspect embodiment of the present invention.

[0018] The vehicle according to an embodiment of the present invention implements the control method of the vehicle headlamp in the above embodiment of the present invention. When the vehicle changes lanes, based on the lane change information, it can control the projection module to project a projection image for guiding the user to change lanes in front of the vehicle, so that the driver can timely and clearly view the road conditions ahead and the obstacles in the blind area. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time, improving traffic safety. Thus, by using the control method of the vehicle headlamp provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals under night or poor visibility conditions be solved, but also by illuminating the lane change section, a more intuitive and accurate visual aid is provided for the driver, which helps to enhance the overall technological sense and intelligence of the vehicle.

[0019] In view of the above existing problems, the present invention also proposes a computer-readable storage medium, on which a vehicle headlamp control program is stored. When the vehicle headlamp control program is executed by a processor, it implements the control method of the vehicle headlamp as described in the above first aspect embodiment of the present invention.

[0020] A computer-readable storage medium according to an embodiment of the present invention, when a control program of a vehicle headlight stored thereon is executed by a processor, implements the control method of the vehicle headlight in the above embodiment of the present invention. When the vehicle changes lanes, based on the lane change information, the projection module can be controlled to project a projection image for guiding the user to change lanes in front of the vehicle, so that the driver can clearly view the road conditions ahead and the obstacles in the blind area in a timely manner. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety. Therefore, by using the control method of the vehicle headlight provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals at night or under poor visibility conditions be solved, but also by illuminating the lane change section, a more intuitive and accurate visual assistance is provided for the driver, which helps to enhance the overall technological sense and intelligence sense of the vehicle.

[0021] Additional aspects and advantages of the present invention 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 invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a schematic structural diagram of a headlight provided by an embodiment of the present invention;

[0024] Figure 2 is a partial structural schematic diagram of a vehicle lamp (excluding the lens assembly) provided by an embodiment of the present invention;

[0025] Figure 3 is Figure 2 a disassembled structural schematic diagram of the vehicle lamp in;

[0026] Figure 4 is a schematic structural diagram of a heat conducting gasket provided by an embodiment of the present invention;

[0027] Figure 5 is Figure 1 a rear view of the vehicle lamp in (part of the heat dissipation components are omitted, only one heat dissipation copper tube is retained);

[0028] Figure 6 is a schematic structural diagram of a heat dissipation fin and a heat dissipation copper tube provided by an embodiment of the present invention;

[0029] Figure 7 is a schematic structural diagram of a heat dissipation copper tube provided by an embodiment of the present invention;

[0030] Figure 8 is Figure 7 a structural schematic diagram of the heat dissipation copper tube in from another perspective;

[0031] Figure 9 Schematic diagram of the structure of the heat dissipation fin provided by an embodiment of the present invention;

[0032] Figure 10 Assembly schematic diagram of the heat dissipation component (removing the thermal conductive gasket) provided by an embodiment of the present invention;

[0033] Figure 11 For Figure 10 Exploded structure schematic diagram of the heat dissipation component in

[0034] Figure 12 Schematic diagram of the structure of the fan housing provided by an embodiment of the present invention;

[0035] Figure 13 For Figure 12 Schematic diagram of the structure of the fan housing in another perspective in

[0036] Figure 14 Assembly structure schematic diagram of the lens assembly and the circuit board provided by an embodiment of the present invention;

[0037] Figure 15 For Figure 14 Exploded structure schematic diagram of the lens assembly and the circuit board in

[0038] Figure 16 Schematic diagram of the structure of the bracket structure provided by an embodiment of the present invention;

[0039] Figure 17 For Figure 16 Schematic diagram of the bracket structure in another perspective in

[0040] Figure 18 Schematic diagram of the structure of the lens structure provided by an embodiment of the present invention;

[0041] Figure 19 Schematic diagram of the lens structure in another perspective provided by an embodiment of the present invention;

[0042] Figure 20 Schematic diagram of the structure of the lens provided by an embodiment of the present invention;

[0043] Figure 21 Astigmatism curve graph and distortion curve graph of the lens structure provided by an embodiment of the present invention;

[0044] Figure 22 Front view schematic diagram of the lens structure and the light source module provided by an embodiment of the present invention;

[0045] Figure 23 Left view schematic diagram of the lens structure and the light source module provided by an embodiment of the present invention;

[0046] Figure 24 A top view schematic diagram of a lens structure and a light source module provided by an embodiment of the present invention;

[0047] Figure 25 A schematic diagram showing the relationship between the emission field of view corresponding to the light source module provided by an embodiment of the present invention and the first optical axis;

[0048] Figure 26 A schematic diagram of a light source module provided by an embodiment of the present invention;

[0049] Figure 27 A schematic diagram of the grouping of the light source module provided by an embodiment of the present invention;

[0050] Figure 28 A schematic diagram of the grouping of the light source module provided by another embodiment of the present invention;

[0051] Figure 29 A schematic diagram of the structure of a heat insulation sheet and a lens assembly provided by an embodiment of the present invention;

[0052] Figure 30 A schematic diagram of the structure of a heat insulation sheet provided by an embodiment of the present invention;

[0053] Figure 31 is Figure 30 A schematic diagram of the structure of the heat insulation sheet in from another perspective;

[0054] Figure 32 A schematic diagram of the structure of a lens structure and a heat insulation sheet provided by an embodiment of the present invention;

[0055] Figure 33 A flowchart of a control method for a vehicle headlight according to an embodiment of the present invention;

[0056] Figure 34 A structural block diagram of a control device for a vehicle headlight according to an embodiment of the present invention.

[0057] Reference numerals:

[0058] 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 portion; 1212 - Light - passing opening; 1213 - Weight - reducing cavity; 1214 - Rib portion; 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 post; 410 - Heat - dissipation copper tube; 411 - Heat - absorbing tube section; 412 - Heat - dissipating tube section; 413 - Connecting tube section; 420 - Heat - dissipation fins; 421 - Through - hole; 422 - Protruding portion; 430 - Heat - conducting gasket; 431 - Second heat - conducting hole; 432 - First avoiding notch; 433 - Avoiding hole; 440 - Heat - dissipation fan; 441 - Air inlet; 442 - Air outlet; 443 - Clamping groove; 444 - Wiring harness; 450 - Fan cover; 4501 - Concave portion; 451 - Flow - guiding portion; 4511 - Bent section; 4512 - Upright section; 452 - Mounting notch; 4521 - Claw; 453 - Extension plate; 4531 - Second avoiding notch; 454 - Wiring notch; 4541 - Wire - clamping portion; 455 - Baffle; 4551 - Connecting hole; 456 - Guide plate; 457 - First protrusion; 458 - Second protrusion; 600 - Heat - insulating sheet; 610 - Main body portion; 611 - Light - passing hole; 612 - Positioning edge; 6121 - First section; 6122 - Second section; 613 - Connecting groove; 620 - Connecting portion; 630 - Positioning portion; 631 - Positioning hole; 640 - Weight - reducing opening; 700 - Emission field of view; 701 - Center line; 702 - First sub - field of view; 703 - Second sub - field of view;

[0059] 1000 - Control device of vehicle headlamp; 1001 - Acquisition module; 1002 - Control module. Detailed implementation manners

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

[0061] Next, refer to Figures 1 - 34 Describe a control method, device, vehicle, and storage medium of a vehicle headlamp according to an embodiment of the present invention.

[0062] First, in combination withFigures 1 - 32 Describe the relevant structure of the vehicle headlight involved in the embodiments of the present invention.

[0063] Among them, with the development of vehicle technology, the functions of vehicle headlights have become more diverse. A type of headlight in the related art can not only be used for lighting but also for projection, 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, the power of the headlight needs to be maintained at a relatively high value. However, in the related art, 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, the embodiments of the present invention provide a headlight 10 and a vehicle having the headlight 10. Among them, refer 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 disposed 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 disposed 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 disposed 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 disposed 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, tail lights, turn signals, brake lights, projection lights, etc. Among them, the headlight is the most important lighting device on the vehicle, and 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 when meeting. The headlight 10 provided by the embodiments of the present invention is not limited to the headlight, and can also be other lamps such as tail lights 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, a single light-emitting point can be controlled to emit light or not emit light, or the light-emitting intensity of a single light-emitting point can be changed, etc. Among them, the control method of the light-emitting points is an existing means and can be achieved through a control circuit composed of thin-film transistors (TFTs). 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 order of dozens 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-converging 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 thermal conductive 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 dissipation copper tube 410 through the thermal conductive gasket 430, and then led out to the outside. Further, a second thermal conductive hole 431 opposite to the light source module 200 is provided on the thermal conductive gasket 430. In this way, the heat dissipation copper tube 410 can also directly dissipate the heat generated by the light source module 200 by means of the second thermal conductive hole 431. Thus, on the one hand, the heat dissipation 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 thermal conductive gasket 430. On the other hand, the heat dissipation copper tube 410 can directly lead out the heat generated by the light source module 200 by means of the second thermal conductive hole 431 on the thermal conductive gasket 430. It can be seen that through this solution, the high thermal 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 is reduced, and the service life of the headlamp 10 is improved.

[0071] See Figure 2 and Figure 3 , Figure 3 is Figure 2 the explosion structure schematic diagram of. 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 thermal conductive heat sink 320. One side of the thermal conductive 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 dissipation copper tube 410 through the second thermal conductive hole 431.

[0072] The shape of the thermal conductive heat sink 320 is similar to the shape of the mounting hole 311. The thermal conductive 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 thermal conductive heat sink 320 can be made of a rectangular copper block, aluminum block, etc. The thermal conductive heat sink 320 can conduct the heat of the light source module 200 to the heat dissipation 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 thermal conductive material can also be coated between the thermal conductive heat sink 320 and the light source module 200, and / or between the thermal conductive heat sink 320 and the heat dissipation copper tube 410. In this way, the air gap between the thermal conductive heat sink 320 and the light source module 200 and the heat dissipation 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 thermal conductive material is ≥6W / mk, and the thickness is ≤0.1mm. The phase change thermal conductive material can specifically adopt various suitable phase change thermal conductive adhesives. There are various types of phase change thermal conductive 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 heat conduction 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 thereon.

[0075] Please refer to Figures 3 - 5 , the shape of the second heat conduction hole 431 is similar to the shape 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 heat conduction 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 the size of the first heat conduction hole 4001. In this way, part of the heat conduction gasket 430 can be exposed from the mounting plate 401. Therefore, the heat conduction gasket 430 can be in direct contact with the heat dissipation copper tube 410 through the first heat conduction hole 4001, and then the heat dissipation copper tube 410 dissipates the heat of the circuit board 300 collected by the heat conduction 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 fitted with the heat conduction 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 respectively communicated with the heat absorption tube section 411 and the heat dissipation tube section 412. 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 arranged 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 arranged 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 arranged perpendicular to both the heat absorption pipe section 411 and the heat dissipation pipe section 412. In addition, it can also be set to an acute angle or an obtuse angle according to actual needs, and the embodiments of the present invention do not make specific limitations in this regard.

[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, extrusion, 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 upper heat dissipation copper pipe 410, the heat dissipation pipe section 412 is higher relative to the heat absorption pipe section 411. In this way, in addition to 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 lower heat dissipation copper pipe 410, the heat dissipation pipe section 412 is lower relative to the heat absorption pipe section 411. In this way, enough 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 to avoid affecting each other's heat dissipation effects.

[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, and by stamping, extruding, etc. 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 a 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 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 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 guiding portions 451 corresponding to the air outlet 442 of the heat dissipation fan 440 on the fan housing 450, the heat dissipation air flow generated by the heat dissipation fan 440 can be converged between the guiding portions. Such a setting can reduce the loss of the heat dissipation air flow, make more heat dissipation air flow 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 flow guiding parts 451 is at least two. That is to say, the number of the flow guiding parts 451 can be two, three, four, etc. Refer to Figure 13 , two flow guiding parts 451 can be arranged oppositely. The two oppositely arranged flow guiding parts 451 can be in a V shape or a horn shape, which plays a role in converging the heat dissipation air flow.

[0091] Exemplarily, refer to Figures 11 - 13 , in some embodiments, the flow guiding 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 to fit 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 assembly.

[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 clamping method. There are various clamping connection methods. In some embodiments, a clamping groove 443 can be arranged on the peripheral side of the heat dissipation fan 440, and at the same time, an installation notch 452 is arranged on the fan housing 450 corresponding to the clamping groove 443, and a clamping claw 4521 for clamping with the clamping groove 443 is arranged on the edge of the installation notch 452. In this way, through the clamping claw 4521 on the fan housing 450 and the clamping 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 clamping 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 mounting notches 452 or clamping claws 4521 on the fan housing 450. Exemplarily, referring to Figure 12 and Figure 13 , when the number of the mounting notches 452 or clamping claws 4521 is two and they are oppositely arranged at the air inlet 441 of the fan housing 450, the number of the extension plates 453 can be one or two, and they are arranged adjacent to the mounting notches 452 or clamping claws 4521.

[0097] Considering avoiding the influence of the extension plate 453 on the heat dissipation airflow 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 fixing the wire harness, in some embodiments, a wire routing notch 454 can also be provided on the fan housing 450, and a wire clamping portion 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 portion 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; meanwhile, 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 screwing the screw 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 and the end close to the baffle 455 is 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 column 4002 is formed on the guiding plate 456, and / or a second protrusion 458 convex toward the connecting column 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 column 4002 is inserted into the baffle 455, the two first protrusions 457 can press the connecting column 4002 tightly to prevent the connecting column 4002 from shaking relative to the baffle 455. On the basis of providing the first protrusion 457 convex toward the connecting column 4002 on the guiding plate 456, a second protrusion 458 convex toward the connecting column 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 column 4002 can be further pressed tightly to prevent the connecting column 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, shape, etc. 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 support the housing portion 1211. For example, the rib plate portion 1214 in the embodiments of the present invention is configured as a grid structure, and the grid bars in the grid structure are connected to each other, which can better support the housing portion 1211.

[0106] The bracket structure 120 in the embodiments of the present invention supports the lens structure 110. The first connecting member 122 realizes the connection between the bracket 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 bracket 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 bracket 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 protrude 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 on 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 part 1211 is made by stamping a sheet, and then the weight reduction cavity 1213 can be surrounded when the housing part 1211 is manufactured; after the housing part 1211 is manufactured, the housing part 1211 is connected to the rib plate part 1214. In other embodiments of the present invention, the housing part 1211 and the rib plate part 1214 are integrally injection-molded, that is, the weight reduction cavity 1213 can be formed in the housing part 1211 after the base 121 is injection-molded, and the housing part 1211 and the rib plate part 1214 are completely connected.

[0110] Please refer to Figures 15 - 18 , in some embodiments, the lens structure 110 includes a lens barrel 114 and a second connecting member 115 fixed to the peripheral side of the lens barrel 114. The second connecting member 115 is fixedly connected to the first connecting member 122, and the mutual connection between the second connecting member 115 and the first connecting member 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 connecting member 122 and the second connecting member 115 is not limited. For example, in some embodiments, one of the first connecting member 122 and the second connecting member 115 has a connection groove 1221, and the other is at least partially located in the connection groove 1221. By snapping the second connecting member 115 into the connection groove 1221 provided on the first connecting member 122, or snapping the first connecting member 122 into the connection groove 1221 provided on the second connecting member 115, the preliminary connection between the first connecting member 122 and the second connecting member 115 is realized; on this basis, the first connecting member 122 and the second connecting member 115 can still be further connected by connecting members such as bolts and pins to strengthen the connection strength between the first connecting member 122 and the second connecting member 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 the connecting groove 1221, and the connecting groove 1221 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 the connecting groove 1221, and the connecting groove 1221 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 the connecting groove 1221, and the lens structure 110 further includes a limiting member 113. The limiting member 113 is fixed on the circumferential side of the lens barrel 114, and the limiting member 113 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. The sealing member 123 is partially 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. The elastic sealing ring is partially 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] Referring 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 include a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4 in sequence along the first optical axis 102 from the imaging side to the image source side. The light from the light source module 200 can pass through the fourth lens L4, the third lens L3, the second lens L2, and the first lens L1 in sequence 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 them, 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, 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 conducive 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 too-fast convergence of light rays on the first optical axis 102, effectively reducing the field curvature and improving the overall imaging quality. Through the reasonable design of the surface types of the first lens L1 to the fourth lens L4 in the embodiments 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 miniaturized 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 surface type design of the inflection point 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 embodiments 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 composed of 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 glass lens 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, thereby maintaining better and more stable imaging quality. 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. The 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 transmission 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 transmission 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 is not less than 150 °C in the embodiments of the present invention, and the temperature tolerances of the first lens L1, the second lens L2, and the third lens L3 are not less than 105 °C, thereby ensuring the normal operation of the four lenses.

[0124] In some embodiments, the lens structure 110 satisfies the conditional formula: 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 formula: -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 formula: 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 can ensure that the lens structure 110 satisfies sufficient image plane brightness in the edge field of view, preventing the entrance pupil diameter from being too small and being unfavorable to 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 light beam in the edge field of view, being conducive to the improvement of the imaging quality of the lens structure 110, preventing image plane curvature, and being conducive to improving the lens resolution of the lens structure 110.

[0128] Even further, in some embodiments, the lens structure 110 satisfies the conditional formula: 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 design difficulty and the requirements of the 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 aperture of the lens will be further enlarged, which is unfavorable to the reduction of tolerance sensitivity and the improvement of 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 to 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 improving 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 with specific parameters.

[0131] For the structural schematic diagram of the lens structure 110 in the embodiments of the present invention, see 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 of the second lens L2 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 of the fourth lens L4 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 of the focal length of each lens is 546.1 nm, and the reference wavelengths of 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 f-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 is 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 microns to 10.5 microns, 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 with the first optical axis 102.

[0142] In the embodiments 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 headlight 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, such that the first optical axis 102 extends along the front-back direction of the vehicle. If the left headlight of the vehicle adopts the headlight in the present invention, then 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 headlight of the vehicle adopts the headlight in the present invention, then 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. Thus, 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-back 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 includes 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 the embodiments 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] Further, 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] Further, 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, the emission field of view 700 of the light source module 200 can be deflected relative to the first optical axis 102, but it can also be ensured that the degree of deflection is not too large.

[0148] Further, 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, which is beneficial to making 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 a first device group 210, and another part constitutes a 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 an embodiment 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 manner of the embodiment 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 multiple 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 an embodiment 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 headlight 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 headlight. For example, the projected pattern or image can be located at the center position in front of the vehicle.

[0155] Referring to Figure 14 、 Figure 15 and Figure 29 , in some embodiments, the headlight 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 headlight 10 works, the circuit board 300 supplies power to the light source module 200 to cause 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 headlight 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 headlight 10 module.

[0157] When the headlight 10 is not working, some external light will enter the headlight 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 headlight 10 module from the outside, resulting in the external natural light entering the headlight 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 part of the external natural light entering the headlight 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 headlight 10 to the circuit board 300 and the light source module 200, and extend the service life of the headlight 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 coating. During the film-forming process of the coating on the surface of the heat insulation sheet 600, the coating precipitates on the surface of the coating, making the surface of the coating uneven, increasing the scattering of light and reducing reflection. Chemical light extinction is achieved by introducing some light-absorbing structures or groups such as polypropylene grafted substances into the coating to obtain low gloss.

[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 the protection of the heat insulation sheet 600 for the circuit board 300 and the light source module 200 can be further improved; 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 some stray light generated by the light source module 200, further improving 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-absorbing 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 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 transmitted through the air. And by connecting the heat insulation sheet 600 to the lens assembly 100 through the connecting portion 620, the heat transferred from the heat insulation sheet 600 to the light source module 200 can be reduced.

[0163] To ensure the blocking of the external natural light by the heat insulation sheet 600, in some embodiments, along the axial direction of the lens structure 110, the main body portion 610 coincides with the end portion 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 the heat insulation sheet 600 is assembled with the lens assembly 100, the first positioning member 111 is made to abut 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 the heat insulation sheet 600 is assembled with 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 symmetrically arranged about the center of the main body portion 610, the number of the connecting portions 620 is two, and the two connecting portions 620 are symmetrically arranged about the center of the main body portion 610.

[0169] Please refer to Figures 29 - 32 , in some embodiments, the main body portion 610 extends towards the circuit board 300 relative to the connecting portion 620 to form an engaging groove 613. The end portion of the lens structure 110 close to the circuit board 300 is located in the engaging 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 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 needs to be bent, it is convenient to bend the sheet metal 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 the 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 to prevent 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 within 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 driving type of the vehicle is not limited, and it can be a fuel vehicle, an electric vehicle, or a hybrid vehicle.

[0176] The vehicle of the embodiment of the present invention has the same application concept as the headlight in the above embodiment. Therefore, the vehicle of the embodiment of the present invention can obtain the technical effects of 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-mentioned embodiment, or both the left headlight and the right headlight adopt the headlight in the above-mentioned embodiment.

[0178] In one embodiment, the left headlight is the headlight in the above-mentioned 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 the front left 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 the front right 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 flowchart of a control method for a vehicle headlight according to an embodiment of the present invention. Among them, the vehicle headlight involved includes an illumination module for illumination and a projection module for projection. The illumination module is used to make the vehicle headlight in the illumination mode as described above, and the projection module is used to make the vehicle headlight in the projection mode as described above. It is not difficult to understand that the vehicle headlight provided by the embodiment of the present invention is applicable to scenes with relatively dim light, especially applicable to night scenes.

[0181] Based on this, as Figure 33 shown, a control method for a vehicle headlight according to an embodiment of the present invention specifically includes the following steps:

[0182] Step S1: When it is determined that the vehicle has a lane-changing intention, obtain lane-changing information.

[0183] In a specific embodiment, during the running of the vehicle, the steering angle of the steering wheel can be monitored in real time through a sensor to determine whether the vehicle has a lane-changing intention. For example, when the steering wheel starts to turn from the center position (usually defined as 0°), when the turning angle reaches a certain degree, it indicates that the driver has a lane-changing intention; further, the driver's line of sight, head or hand movements, etc. can be monitored through devices such as cameras and sensors, and machine learning algorithms are used to analyze the driver's intention, so as to determine whether the vehicle has a lane-changing intention.

[0184] Further, when it is determined that the vehicle has a lane-changing intention, data such as the steering wheel angle and angle rate collected in real time by sensors installed inside the vehicle can be obtained, and then the lane-changing information of the vehicle can be obtained, including but not limited to the lane-changing direction of the vehicle (changing lanes to the left or to the right), the lane-changing angle of the vehicle, etc.

[0185] Step S2: Based on the lane-changing information, control the projection module to project a projection image for guiding the user to change lanes in front of the vehicle while driving.

[0186] Specifically, that is, according to the above-obtained lane-changing information of the vehicle, control the projection module to project a projection image for guiding the user to change lanes in front of the vehicle while driving. Among them, the projection image includes but is not limited to lane-changing signs, road contours, etc., so that the driver can clearly view the road conditions ahead and obstacles in the blind area in a timely manner. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety; thus, by using the vehicle headlight control method provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals at night or under poor visibility conditions be solved, but also a more intuitive and accurate visual aid can be provided for the driver by illuminating the lane-changing section, which helps to enhance the overall technological and intelligent sense of the vehicle.

[0187] Specifically, regarding the specific structures and working principles of the vehicle headlights and the projection module, reference can be made to the foregoing for details, and no further elaboration will be provided here.

[0188] Therefore, according to the vehicle headlight control method of the embodiment of the present invention, when the vehicle changes lanes, a projection image for guiding the user to change lanes can be projected in front of the vehicle while driving based on the lane-changing information, so that the driver can clearly view the road conditions ahead and obstacles in the blind area in a timely manner. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety; thus, by using the vehicle headlight control method provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals at night or under poor visibility conditions be solved, but also a more intuitive and accurate visual aid can be provided for the driver by illuminating the lane-changing section, which helps to enhance the overall technological and intelligent sense of the vehicle.

[0189] In an embodiment of the present invention, the lane-changing information includes the lane-changing direction. Based on the lane-changing information, controlling the projection module to project a projection image for guiding the user to change lanes in front of the vehicle while driving includes: planning a lane-changing path based on the lane-changing direction, and controlling the projection module to project the projection image along the lane-changing path in front of the vehicle while driving.

[0190] In a specific embodiment, the lane change information includes the lane change direction. For example, through devices such as a steering wheel angle sensor, the current lane change direction of the vehicle can be obtained in real time, that is, whether the vehicle changes lanes to the left or to the right. Further, when controlling the projection module to project a projection image for guiding the user to change lanes in front of the vehicle, the high-precision map data provided by the in-vehicle navigation system can be utilized, combined with the surrounding environment information collected in real time by sensors such as cameras and radars installed on the vehicle, and a specific lane change path can be planned based on the lane change direction of the vehicle to ensure that the projection image can accurately and timely guide the driver to complete the lane change action.

[0191] Specifically, that is, according to the above-mentioned lane change path planned based on the lane change direction, controlling the projection module to project a projection image along the lane change path in front of the vehicle can facilitate the driver to clearly view the road conditions ahead and the obstacles in the blind area in a timely manner. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety; thus, by using the vehicle headlight control method provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals at night or under poor visibility conditions be solved, but also a more intuitive and accurate visual assistance can be provided for the driver by illuminating the lane change section, which helps to enhance the overall technological sense and intelligence of the vehicle.

[0192] In an embodiment of the present invention, the lane change path includes a first lane change path for changing lanes to the left or a second lane change path for changing lanes to the right, and the projection image includes a first projection image projected along the first lane change path and a second projection image projected along the second lane change path.

[0193] In a specific embodiment, when the vehicle changes lanes, a first lane change path for changing lanes to the left or a second lane change path for changing lanes to the right can be planned according to the lane change direction; correspondingly, the projection module can project corresponding projection images in front of the vehicle according to the planned path, that is, a first projection image projected along the first lane change path and a second projection image projected along the second lane change path, to guide the driver to complete the lane change action.

[0194] Specifically, that is, according to the first projection image projected along the first lane change path and the second projection image projected along the second lane change path, it can facilitate the driver to clearly view the road conditions ahead and the obstacles in the blind area in a timely manner. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety; thus, by using the vehicle headlight control method provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals at night or under poor visibility conditions be solved, but also a more intuitive and accurate visual assistance can be provided for the driver by illuminating the lane change section, which helps to enhance the overall technological sense and intelligence of the vehicle.

[0195] In an embodiment of the present invention, the projected image includes a projection beam that covers the lane-changing path and perfectly matches the lane-changing path.

[0196] In a specific embodiment, the shape of the projected image should cover the planned lane-changing path and perfectly match the shape of the lane-changing path. That is, the size (including length and width) of the projection beam can be adjusted according to the specific size of the lane-changing path to ensure that the length of the projection beam is long enough, and the width of the projection beam should match the width of the lane-changing path. For example, if the planned lane-changing path is to change lanes to the left, a beam that bends to the left is projected; if the planned lane-changing path is to change lanes to the right, a beam that bends to the right is projected, so as to ensure that the projection beam can accurately cover and guide the entire lane-changing process of the vehicle.

[0197] Specifically, based on the above projection beam that covers the lane-changing path and perfectly matches the lane-changing path, it is convenient for the driver to clearly view the road conditions ahead and the obstacles in the blind area in a timely manner. At the same time, the projected image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety. Therefore, by using the vehicle headlight control method provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals at night or under poor visibility conditions be solved, but also by illuminating the lane-changing section, a more intuitive and accurate visual aid is provided for the driver, which helps to enhance the overall technological and intelligent sense of the vehicle.

[0198] In an embodiment of the present invention, the projection beam is a monochromatic projection beam.

[0199] In a specific embodiment, the projection beam is a monochromatic projection beam, that is, during the entire projection process, the projection beam is composed of light of a single color and there is no color change or mixing.

[0200] Specifically, when the projection module projects, since the color of the monochromatic projection beam is single, the brightness is usually relatively stable and there will be no brightness fluctuation due to color mixing, which can ensure the clarity and stability of the projection effect. At the same time, from the perspective of equipment cost and maintenance, monochromatic projection is relatively simple and does not require the use of multiple color channels (usually the three primary colors of red, green, and blue) for color synthesis, that is, no complex color management and calibration system is required, thereby reducing the manufacturing cost of the equipment and the difficulty and cost of maintenance.

[0201] In an embodiment of the present invention, the monochromatic projection beam is a white projection beam.

[0202] In a specific embodiment, the monochromatic projection beam is a white projection beam, that is, the beam emitted by the projection module is composed of white light. White light has high brightness and good visibility. Specifically, white light is usually composed of a combination of multiple colors, and it is stronger in brightness than light of other single colors and is easier to be seen under various conditions. Moreover, white light has good visibility both during the day and at night and will not be significantly affected by changes in ambient light, making it easy to be recognized by drivers and other road users.

[0203] Therefore, setting the monochromatic projection beam as a white projection beam can facilitate the driver to clearly view the road conditions ahead and obstacles in the blind area in a timely manner. At the same time, it can attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety. Thus, by using the vehicle headlight control method provided by the embodiments of the present invention, not only can the problem of insufficient warning effect of traditional turn signals at night or under poor visibility conditions be solved, but also by illuminating the turning section, a more intuitive and accurate visual aid is provided for the driver, which helps to enhance the overall technological and intelligent sense of the vehicle.

[0204] In an embodiment of the present invention, the projection image includes two projection lines, and the two projection lines respectively correspond to and match the two side edges of the lane change path one by one.

[0205] In a specific embodiment, as the vehicle travels and changes lanes, the control module can dynamically adjust the position and shape of the projection lines in the projection image emitted by the projection module according to real-time data to ensure that the projection lines always correspond to and are precisely aligned with the two side edges of the lane change path one by one, that is, the two projection lines respectively match the two side edges of the lane change path one by one.

[0206] Specifically, by respectively corresponding the two projection lines to the two side edges of the lane change path one by one, a clear lane change path guidance can be provided for the driver, enabling the driver to intuitively see the driving route to be followed, helping the driver better identify the road boundary and lane change points, providing a more intuitive and accurate visual aid for the driver, and thus improving driving safety and the overall technological and intelligent sense of the vehicle.

[0207] In an embodiment of the present invention, when the vehicle's turn signal is triggered and / or the steering wheel angle of the vehicle is greater than a preset angle, it is determined that the vehicle has an intention to change lanes.

[0208] Specifically, during the vehicle driving process, when the driver is preparing to change lanes, the corresponding turn signal will be turned on in advance. Therefore, when the turn signal of the vehicle is triggered, it can be determined that the driver has a clear intention to change lanes. Similarly, during the vehicle driving process, the angle change of the steering wheel can be continuously monitored and compared with a preset angle. When the steering wheel angle of the vehicle is greater than the preset angle, it can also be determined that the driver has a clear intention to change lanes.

[0209] In a specific embodiment, the preset angle can be set according to the actual situation.

[0210] Generally speaking, according to the vehicle headlight control method of the embodiments of the present invention, when the vehicle is changing lanes, based on the lane change information, the projection module can be controlled to project a projection image for guiding the user to change lanes in front of the vehicle, so that the driver can timely and clearly view the road conditions ahead and the obstacles in the blind area. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety. Therefore, by using the vehicle headlight control method provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals under night or poor visibility conditions be solved, but also by illuminating the lane change section, a more intuitive and accurate visual assistance is provided for the driver, which helps to enhance the overall technological sense and intelligence of the vehicle.

[0211] A further embodiment of the present invention also discloses a vehicle headlight control device. As mentioned above, the vehicle headlight involved includes an illumination module for lighting and a projection module for projection. Among them, the illumination module is used to make the vehicle headlight in the illumination mode as before, and the projection module is used to make the vehicle headlight in the projection mode as before. It is not difficult to understand that the vehicle headlight provided by the embodiments of the present invention is applicable to scenes with relatively dim light, especially suitable for night scenes.

[0212] Figure 34 is a structural block diagram of a vehicle headlight control device according to an embodiment of the present invention, as Figure 34 shown, the vehicle headlight control device 1000 includes: an acquisition module 1001 and a control module 1002.

[0213] Specifically, the acquisition module 1001 is used to acquire lane change information when it is determined that the vehicle has an intention to change lanes.

[0214] The control module 1002 is used to control the projection module to project a projection image for guiding the user to change lanes in front of the vehicle based on the lane change information.

[0215] In an embodiment of the present invention, the lane change information includes the lane change direction. Based on the lane change information, the projection module is controlled to project a projection image for guiding the user to change lanes in front of the vehicle. Specifically, the control module 1002 is configured to: plan a lane change path based on the lane change direction, and control the projection module to project a projection image along the lane change path in front of the vehicle.

[0216] In an embodiment of the present invention, the lane change path includes a first lane change path for changing lanes to the left or a second lane change path for changing lanes to the right, and the projection image includes a first projection image projected along the first lane change path and a second projection image projected along the second lane change path.

[0217] In an embodiment of the present invention, the projection image includes a projection beam that covers the lane change path and completely matches the lane change path.

[0218] In an embodiment of the present invention, the projection beam is a monochromatic projection beam.

[0219] In an embodiment of the present invention, the monochromatic projection beam is a white projection beam.

[0220] In an embodiment of the present invention, the projection image includes two projection lines, and the two projection lines respectively correspond to and match the two side edges of the lane change path.

[0221] In an embodiment of the present invention, when the turn signal of the vehicle is triggered and / or the steering wheel angle of the vehicle is greater than a preset angle, it is determined that the vehicle has a lane change intention.

[0222] It should be noted that when the vehicle headlight control device 1000 of the embodiment of the present invention controls the vehicle headlight, its specific implementation manner is similar to the specific implementation manner of the vehicle headlight control method described in any of the above embodiments of the present invention. For details, please refer to the description in the method part. To reduce redundancy, it will not be elaborated here.

[0223] According to the vehicle headlight control device 1000 of the embodiment of the present invention, the vehicle headlight control method of the above embodiment of the present invention is implemented. When the vehicle changes lanes, the projection module can be controlled to project a projection image for guiding the user to change lanes in front of the vehicle, so that the driver can timely and clearly view the road conditions ahead and the obstacles in the blind area. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time, improving traffic safety; thus, by using the vehicle headlight control method provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals at night or under poor visibility conditions be solved, but also a more intuitive and accurate visual assistance is provided for the driver by illuminating the lane change section, which helps to enhance the overall technological sense and intelligence of the vehicle.

[0224] A further embodiment of the present invention also discloses a vehicle.

[0225] In some embodiments, the vehicle includes: a control device 1000 for vehicle headlights as described in any of the above embodiments of the present invention.

[0226] In other embodiments, the vehicle includes: a processor, a memory, and a control program for vehicle headlights stored on the memory and executable on the processor. When the control program for vehicle headlights is executed by the processor, it implements the control method for vehicle headlights as described in any of the above embodiments of the present invention.

[0227] In a specific embodiment, the vehicle can be any one of a pure electric vehicle, a fuel vehicle, or a hybrid vehicle.

[0228] The vehicle according to the embodiment of the present invention implements the control method for vehicle headlights in the above embodiments of the present invention. First, by determining that there is an obstacle in front of the vehicle during driving, it is used as a judgment condition for controlling the vehicle headlights. When it is determined that there is an obstacle in front of the vehicle during driving, by obtaining the obstacle information corresponding to the obstacle, it is used as the basis for controlling the vehicle headlights. Finally, according to the obtained obstacle information corresponding to the obstacle, the projection module is controlled to project a projection image corresponding to the obstacle information in front of the vehicle during driving, facilitating the driver to view the information of the obstacle clearly and in a timely manner; thus, by using the control method for vehicle headlights provided by the present invention, not only can the driving safety of the vehicle be improved, but also the display form of the vehicle headlights can be enriched and intelligent interaction can be achieved, which helps to enhance the overall technological sense and intelligent sense of the vehicle.

[0229] A further embodiment of the present invention also discloses a computer-readable storage medium. A control program for vehicle headlights is stored on the computer-readable storage medium. When the control program for vehicle headlights is executed by the processor, it implements the control method for vehicle headlights as described in any of the above embodiments of the present invention.

[0230] For the computer-readable storage medium according to the embodiment of the present invention, when the control program for vehicle headlights stored thereon is executed by the processor, it implements the control method for vehicle headlights in the above embodiments of the present invention. When the vehicle changes lanes, based on the lane change information, the projection module can be controlled to project a projection image for guiding the user to change lanes in front of the vehicle during driving, so that the driver can view the road conditions ahead and the obstacles in the blind area clearly and in a timely manner. At the same time, the projection image can also attract the attention of surrounding vehicles, pedestrians, and non-motor vehicles, reminding them to avoid in a timely manner and improving traffic safety; thus, by using the control method for vehicle headlights provided by the present invention, not only can the problem of insufficient warning effect of traditional turn signals under night or poor visibility conditions be solved, but also by illuminating the lane change section, a more intuitive and accurate visual assistance is provided for the driver, which helps to enhance the overall technological sense and intelligent sense of the vehicle.

[0231] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean 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 invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0232] Although the embodiments of the present invention 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 invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A control method for a vehicle headlight, characterized in that, The vehicle headlamp includes a circuit board, a light source module, a lens assembly, and a heat dissipation assembly. Among them, the light source module is disposed on one side of the circuit board and includes an illumination module for lighting and a projection module for projection. The lens assembly is arranged on the light-emitting side of the light source module to receive and diverge the light emitted by the light source module. The heat dissipation assembly includes at least one heat dissipation copper tube, a heat conduction gasket, and a mounting plate. The mounting plate is located between the heat dissipation copper tube and the heat conduction gasket and is used to provide support for the circuit board and the heat dissipation copper tube. The mounting plate is provided with a first heat conduction hole. The heat conduction gasket is disposed on the surface of the circuit board facing away from the light source module. The heat dissipation copper tube is located on the side of the heat conduction gasket facing away from the circuit board and is in contact with the heat conduction gasket. Among them, the heat conduction gasket is provided with a second heat conduction hole, and the second heat conduction hole is disposed opposite to the light source module. At least one heat dissipation copper tube dissipates heat from the light source module through the second heat conduction hole. The control method of the vehicle headlamp includes: When it is determined that the vehicle has a lane-changing intention, lane-changing information is obtained, where the lane-changing information includes the lane-changing direction; Based on the lane-changing direction, a lane-changing path is planned, and the projection module is controlled to project a projection image for guiding the user to change lanes along the lane-changing path in front of the vehicle during driving. Among them, the projection image includes a projection beam that covers the lane-changing path and completely matches the lane-changing path.

2. The control method of the vehicle headlight according to claim 1, wherein, The lane-changing path includes a first lane-changing path for changing lanes to the left or a second lane-changing path for changing lanes to the right. The projection image includes a first projection image projected along the first lane-changing path and a second projection image projected along the second lane-changing path.

3. The control method of the vehicle headlight according to claim 1, wherein, The projection beam is a monochromatic projection beam.

4. The control method of the vehicle headlamp according to claim 3, wherein The monochromatic projection beam is a white projection beam.

5. The control method of the vehicle headlamp according to claim 1, wherein The projection image includes two projection lines, and the two projection lines respectively correspond to and match the two side edges of the lane-changing path.

6. The control method of the vehicle headlamp according to claim 1, characterized in that, When the turn signal of the vehicle is triggered and / or the steering wheel angle of the vehicle is greater than a preset angle, it is determined that the vehicle has a lane-changing intention.

7. A control device for a vehicle headlight, characterized in that, The vehicle headlamp includes a circuit board, a light source module, a lens assembly, and a heat dissipation assembly. Among them, the light source module is disposed on one side of the circuit board and includes an illumination module for lighting and a projection module for projection. The lens assembly is arranged on the light-emitting side of the light source module to receive and diverge the light emitted by the light source module. The heat dissipation assembly includes at least one heat dissipation copper tube, a heat conduction gasket, and a mounting plate. The mounting plate is located between the heat dissipation copper tube and the heat conduction gasket and is used to provide support for the circuit board and the heat dissipation copper tube. The mounting plate is provided with a first heat conduction hole. The heat conduction gasket is disposed on the surface of the circuit board facing away from the light source module. The heat dissipation copper tube is located on the side of the heat conduction gasket facing away from the circuit board and is in contact with the heat conduction gasket. Among them, the heat conduction gasket is provided with a second heat conduction hole, and the second heat conduction hole is disposed opposite to the light source module. At least one heat dissipation copper tube dissipates heat from the light source module through the second heat conduction hole. The control device of the vehicle headlamp includes: An acquisition module, configured to acquire lane change information when it is determined that the vehicle has a lane change intention, wherein the lane change information includes a lane change direction. A control module, configured to plan a lane change path based on the lane change direction, and control the projection module to project a projection image for guiding the user to change lanes along the lane change path in front of the vehicle during driving, wherein the projection image includes a projection light beam that covers the lane change path and completely matches the lane change path.

8. A vehicle, characterized in that, including: The control device of the vehicle headlight according to claim 7, or A processor, a memory, and a control program of the vehicle headlight stored on the memory and executable on the processor, wherein when the control program of the vehicle headlight is executed by the processor, the control method of the vehicle headlight according to any one of claims 1-6 is implemented.

9. A computer-readable storage medium, characterized in that, A control program of the vehicle headlight is stored on the computer-readable storage medium, and when the control program of the vehicle headlight is executed by a processor, the control method of the vehicle headlight according to any one of claims 1-6 is implemented.

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