Control method for vehicle headlight, and vehicle

Abstract

Disclosed in the present invention are a control method for a vehicle headlight, and a vehicle. The vehicle headlight comprises an illumination module for illumination and a projection module for projection. The control method for a vehicle headlight comprises: when it is determined that a vehicle has a path change intention, acquiring path change information; and on the basis of the path change information, controlling a projection module to project, in front of the travelling vehicle, a projection image for guiding a user to change a path, such that a driver can conveniently and clearly view road conditions ahead and obstacles in blind areas in a timely manner, and the projection image can also attract the attention of surrounding vehicles, pedestrians and non-motor vehicles to remind same to yield in time, thereby improving traffic safety. Therefore, using the control method for a vehicle headlight provided in the present invention can solve the problem of the warning effect of conventional turn signals at night or under poor visibility conditions being insufficient, and also provides more intuitive and accurate visual assistance for drivers by means of illuminating a path change section, thereby helping to improve the overall high-tech and intelligent feel of a vehicle.

Description

Vehicle headlight control method and vehicle

[0001] The present application claims priority to the applications with the application number 202411377166.5, the title of "Vehicle headlight control method, device, vehicle and computer readable storage medium" and the application number 202411377066.2, the title of "Vehicle headlight control method, device, vehicle and computer readable storage medium" filed with the China Patent Office on September 30, 2024, the entire contents of which are hereby incorporated by reference in the present application. TECHNICAL FIELD

[0002] The present application relates to the technical field of vehicles, in particular to a vehicle headlight control method and vehicle. BACKGROUND

[0003] In the modern traffic environment, vehicle driving safety is increasingly concerned by all sectors of society, especially when driving at night, the driver often has difficulty accurately judging the road conditions in front and obstacles in the blind area when turning, increasing the risk of traffic accidents, at the same time, other vehicles, pedestrians and non-motor vehicles also often fail to avoid in time due to the inability to obtain the vehicle's turning intention, lane changing intention and other path change intentions in time, further exacerbating the traffic safety hazards.

[0004] In related technologies, the turning intention, lane changing intention and other path change intentions of the vehicle are usually conveyed to surrounding vehicles and pedestrians through the turn signal, however, to some extent, it improves the traffic safety, but its range of action is limited, especially at night or in complex road conditions, its warning effect is often not significant enough, in addition, the turn signal can only provide simple direction indication and cannot directly illuminate the path change section such as the turning section and the lane changing section, the driver still needs to rely on his own visual judgment when turning, lane changing and other path changes, increasing the operation difficulty and safety hazards. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the related art. To this end, the purpose of the present application is to propose a vehicle headlight control method and vehicle.

[0006] The vehicle headlight control method proposed by the present application, the vehicle headlight includes an illumination module for illumination and a projection module for projection, the vehicle headlight control method includes:

[0007] When it is determined that the vehicle has a path change intention, the path change information is acquired; based on the path change information, the projection module is controlled to project a projection image for guiding the user to change the path in front of the vehicle driving.

[0008] In view of the above problems, the present application further provides a control device of a vehicle headlamp, the vehicle headlamp comprising an illumination module for illumination and a projection module for projection, the control device of the vehicle headlamp comprising: an acquisition module configured to acquire path change information when the vehicle has a path change intention; and a control module configured to control the projection module to project a projection image for guiding a user to change path in front of the vehicle based on the path change information.

[0009] In view of the above problems, the present application further provides a vehicle comprising the control device of the vehicle headlamp according to the second aspect of the present application, or the vehicle comprising a processor, a memory, and a control program of the vehicle headlamp stored in the memory and executable on the processor, the control program of the vehicle headlamp being executed by the processor to implement the control method of the vehicle headlamp according to the first aspect of the present application.

[0010] In view of the above problems, the present application further provides a computer readable storage medium, the computer readable storage medium storing a control program of a vehicle headlamp, the control program of the vehicle headlamp being executed by a processor to implement the control method of the vehicle headlamp according to the first aspect of the present application.

[0011] The control method, device, vehicle and readable storage medium of the vehicle headlamp provided by the present application can project a projection image for guiding a user to change path in front of the vehicle based on path change information when the vehicle changes path, so that the driver can clearly view the road conditions and obstacles in the blind area in front of the vehicle in time, and 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, the control method of the vehicle headlamp provided by the present application can not only solve the problem of insufficient warning effect of the traditional turn signal in the night or poor visibility conditions, but also provide more intuitive and accurate visual assistance for the driver by illuminating the path change section such as the turning section and the variable road section, thereby helping to improve the overall sense of technology and intelligence of the vehicle.

[0012] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0013] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings.

[0014] Fig. 1 is a structural schematic view of a headlamp according to an embodiment of the present application;

[0015] Fig. 2 is a partial structural schematic view of a vehicle lamp (without lens assembly) according to an embodiment of the present application;

[0016] Fig. 3 is an exploded structural schematic view of the vehicle lamp in Fig. 2;

[0017] Fig. 4 is a structural schematic view of a heat-conducting gasket according to an embodiment of the present application;

[0018] Fig. 5 is a rear view of the vehicle lamp in Fig. 1 (part of the heat-dissipating assembly is omitted, and only one heat-dissipating copper pipe is reserved);

[0019] Fig. 6 is a structural schematic view of a heat-dissipating fin and a heat-dissipating copper pipe according to an embodiment of the present application;

[0020] Fig. 7 is a structural schematic view of a heat-dissipating copper pipe according to an embodiment of the present application;

[0021] Fig. 8 is a structural schematic view of the heat-dissipating copper pipe in Fig. 7 from another perspective;

[0022] Fig. 9 is a structural schematic view of a heat-dissipating fin according to an embodiment of the present application;

[0023] Fig. 10 is an assembly schematic view of a heat-dissipating assembly (without heat-conducting gasket) according to an embodiment of the present application;

[0024] Fig. 11 is an exploded structural schematic view of the heat-dissipating assembly in Fig. 10;

[0025] Fig. 12 is a structural schematic view of a fan cover according to an embodiment of the present application;

[0026] Fig. 13 is a structural schematic view of the fan cover in Fig. 12 from another perspective;

[0027] Fig. 14 is an assembly structural schematic view of a lens assembly and a circuit board according to an embodiment of the present application;

[0028] Fig. 15 is an exploded structural schematic view of the lens assembly and the circuit board in Fig. 14;

[0029] Fig. 16 is a structural schematic view of a support structure according to an embodiment of the present application;

[0030] Fig. 17 is a structural schematic view of the support structure in Fig. 16 from another perspective;

[0031] Fig. 18 is a structural schematic view of a lens structure according to an embodiment of the present application;

[0032] Fig. 19 is a structural schematic view of the lens structure in Fig. 18 from another perspective;

[0033] Fig. 20 is a structural schematic view of a lens according to an embodiment of the present application;

[0034] FIG. 21 is a graph of the astigmatism curve and distortion curve of the lens structure according to an embodiment of the present application;

[0035] FIG. 22 is a front view of the lens structure and light source module according to an embodiment of the present application;

[0036] FIG. 23 is a left view of the lens structure and light source module according to an embodiment of the present application;

[0037] FIG. 24 is a top view of the lens structure and light source module according to an embodiment of the present application;

[0038] FIG. 25 is a schematic diagram of the relationship between the emission field of view of the light source module and the first optical axis according to an embodiment of the present application;

[0039] FIG. 26 is a schematic diagram of the light source module according to an embodiment of the present application;

[0040] FIG. 27 is a schematic diagram of the grouping of the light source module according to an embodiment of the present application;

[0041] FIG. 28 is a schematic diagram of the grouping of the light source module according to another embodiment of the present application;

[0042] FIG. 29 is a schematic diagram of the structure of the heat insulation sheet and lens assembly according to an embodiment of the present application;

[0043] FIG. 30 is a schematic diagram of the structure of the heat insulation sheet according to an embodiment of the present application;

[0044] FIG. 31 is a schematic diagram of the structure of the heat insulation sheet in another view according to an embodiment of the present application;

[0045] FIG. 32 is a schematic diagram of the structure of the lens structure and heat insulation sheet according to an embodiment of the present application;

[0046] FIG. 33 is a flowchart of a control method of a vehicle headlamp according to an embodiment of the present application;

[0047] FIG. 34 is a block diagram of the vehicle headlamp structure according to an embodiment of the present application;

[0048] FIG. 35 is a schematic diagram of the projection of an image in front of a vehicle by a vehicle headlamp according to an embodiment of the present application;

[0049] FIG. 36 is a block diagram of a control device of a vehicle headlamp according to an embodiment of the present application.

[0050] Reference signs: 10-headlamp; 100-lens assembly; 101-lens; 102-first optical axis; L1-first lens; L2-second lens; L3-third lens; L4-fourth lens; 110-lens structure; 111-first positioning member; 112-second positioning member; 113-limiting member; 114-lens barrel; 115-second connecting member; 116-limiting member; 120-bracket structure; 121-base; 1211-housing part; 1212-light passing opening; 1213-weight reduction cavity; 1214-rib part; 1215-receiving 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-thermally conductive heat sink; 400-radiating assembly; 401-mounting plate; 4001-first thermally conductive hole; 4002-connecting column; 410-radiating copper pipe; 411-heat absorbing pipe segment; 412-radiating pipe segment; 413-connecting pipe segment; 420-radiating fin; 421-through hole; 422-protruding part; 430-thermally conductive gasket; 431-second thermally conductive hole; 432-first avoiding notch; 433-avoiding hole; 440-radiating fan; 441-air inlet; 442-air outlet; 443-clamping groove; 444-wire harness; 450-fan cover; 4501-recessed part; 451-guiding part; 4511-bent segment; 4512-erecting segment; 452-mounting notch; 4521-claw; 453-extended plate; 4531-second avoiding notch; 454-wiring notch; 4541-wire clamping part; 455-baffle; 4551-connecting hole; 456-guiding plate; 457-first protrusion; 458-second protrusion; 600-heat insulation sheet; 610-main body part; 611-light passing hole; 612-positioning edge; 6121-first segment; 6122-second segment; 613-engaging groove; 620-connecting part; 630-positioning part; 631-positioning hole; 640-weight reduction opening; 700-emission field of view; 701-center line; 702-first sub field of view; 703-second sub field of view; 800-illumination module; 900-projection module; 20-vehicle; 30-projected image; 1000-control device of vehicle headlamp; 1001-acquiring module; 1002-controlling module. DETAILED DESCRIPTION

[0051] Embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0052] A control method, device, vehicle and storage medium of a vehicle headlamp according to embodiments of the present application are described below with reference to Figs. 1-36.

[0053] First, the related structure of the vehicle headlamp involved in the embodiment of the present application is described in combination with FIGS. 1-32.

[0054] With the development of vehicle technology, the function of the vehicle headlamp has become more and more rich. In the related art, a headlamp can not only be used for illumination, but also can project a static pattern or a dynamic image on the road in front of the vehicle.

[0055] In order to achieve the best projection performance, it is necessary to keep the power of the headlamp at a high value. However, in the related art, the light source module of the headlamp is usually integrated on a circuit board, and the high heat energy generated by the light source module is easy to cause damage to the components on the circuit board, thereby reducing the service life of the headlamp.

[0056] Based on the above problems, the embodiment of the present application provides a headlamp 10 and a vehicle with the headlamp 10. As shown in FIGS. 1, 2 and 3, the headlamp 10 includes a circuit board 300, a light source module 200, a lens assembly 100 and a heat dissipation assembly 400. The light source module 200 is arranged on one side of the circuit board 300, the light source module 200 has an illumination mode and a projection mode, and the light source module 200 can project an image when it is in the projection mode; the lens assembly 100 is arranged on the light emitting side of the light source module 200 to receive and disperse the light emitted by the light source module 200. The heat dissipation assembly 400 includes at least one heat dissipation copper pipe 410 and a heat conduction gasket 430, the heat conduction gasket 430 is arranged on the surface of the circuit board 300 away from the light source module 200, and the heat dissipation copper pipe 410 is located on the side of the heat conduction gasket 430 away from the circuit board 300 and in contact with the heat conduction gasket 430. The heat conduction gasket 430 is provided with a second heat conduction hole 431, the second heat conduction hole 431 is arranged opposite to the light source module 200, and the at least one heat dissipation copper pipe 410 dissipates heat to the light source module 200 through the second heat conduction hole 431.

[0057] In the present application, the headlamp 10 refers to the lamps on the vehicle. There are many lamps on the car, including headlamps, tail lamps, turn signals, brake lights, projection lamps, etc. Among them, the headlamp is the most important lighting device on the car, which plays a role in illuminating the road and objects in front of the car at night to ensure driving safety. The headlamp can emit alternating light signals of high beam and low beam to facilitate overtaking at night and avoid dazzling the driver of the opposite vehicle. The headlamp 10 provided by the embodiment of the present application is not limited to a headlamp, but can also be a tail lamp, a projection lamp or other lamps.

[0058] The light source module 200 is installed on the circuit board 300 as a light source of the headlamp 10. The light source module 200 can include a plurality of micron-level light emitting points, each of which can be independently controlled, for example, to control a single light emitting point to emit light or not to emit light, or to change the light intensity of a single light emitting point, etc. The control mode of the light emitting point is a prior art, which can be realized by a control circuit composed of a thin film transistor TFT, and the present application does not expand on it. The light source module 200 has an illumination mode and a projection mode, and the light emitting mode of the light emitting point can be adjusted according to different working modes. For example, in the illumination mode, all light emitting points can be controlled to emit white light to maximize the illumination brightness. For example, in the projection mode, part of the light emitting points can be controlled to emit light, so that a specific image 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 by color combination, and dynamic images can be projected in combination with existing display technology. Alternatively, referring to FIG. 26, the light source module 200 includes a plurality of light emitting devices 201 arranged in an array, and the light emitting device 201 is a Mini LED or a Micro LED. The Mini LED is a light emitting device 201 with a size of tens of microns, and the Micro LED is a light emitting device 201 with a size of less than ten microns.

[0059] The lens assembly 100 is a lens assembly 100 with light converging effect. The lens assembly 100 is located at the light emitting end of the light source module 200, which is conducive to improving the clarity of projection.

[0060] The heat dissipation assembly 400 is used for heat dissipation of the structure in the headlamp 10. Specifically, the heat dissipation assembly 400 includes at least one heat dissipation copper pipe 410 and a heat conduction gasket 430. The at least one heat dissipation copper pipe 410 means that the heat dissipation copper pipe 410 can be two, three, four, etc. The heat conduction gasket 430 is located between the circuit board 300 and the heat dissipation copper pipe 410, and the heat conduction gasket 430 can improve the heat transfer efficiency between the circuit board 300 and the heat dissipation copper pipe 410.

[0061] The scheme provided by the present application is that the heat-conducting gasket 430 is arranged on the side surface of the circuit board 300 away from the light source module 200, so that the heat transferred from the light source module 200 to the circuit board 300 can be transferred to the heat dissipation copper pipe 410 through the heat-conducting gasket 430 and then dissipated to the outside. Further, the heat-conducting gasket 430 is provided with a second heat-conducting hole 431 opposite to the light source module 200. In this way, the heat dissipation copper pipe 410 can also directly dissipate the heat generated by the light source module 200 through the second heat-conducting hole 431. In this way, on the one hand, the heat dissipation copper pipe 410 can indirectly dissipate the heat transferred from the light source module 200 to the circuit board 300 through the heat-conducting gasket 430, and on the other hand, the heat dissipation copper pipe 410 can directly dissipate the heat generated by the light source module 200 through the second heat-conducting hole 431 on the heat-conducting gasket 430. It can be seen that through the scheme, the high heat energy of the light source module 200 of the headlamp 10 can be effectively dissipated, the probability of damage of 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.

[0062] Referring to FIG. 2 and FIG. 3, which is an exploded structural schematic diagram of FIG. 2, in some embodiments, the circuit board 300 is provided with a mounting hole 311 opposite to the light source module 200. The heat dissipation assembly 400 further comprises a heat-conducting heat sink 320, one side of the heat-conducting heat sink 320 is in contact with the light source module 200 through the mounting hole 311, and the other side is in contact with at least one heat dissipation copper pipe 410 through the second heat-conducting hole 431.

[0063] The shape of the heat-conducting heat sink 320 is similar to that of the mounting hole 311, and the heat-conducting heat sink 320 can be embedded in the mounting hole 311, for example. Exemplarily, as shown in FIG. 2, the mounting hole 311 is rectangular, and the heat-conducting heat sink 320 can adopt a rectangular copper block, aluminum block, etc. The heat-conducting heat sink 320 can conduct the heat of the light source module 200 to the heat dissipation copper pipe 410.

[0064] In order to further improve the heat dissipation effect and heat conduction speed of the light source module 200, in some embodiments, a phase-change heat-conducting material can also be coated between the heat-conducting heat sink 320 and the light source module 200 and / or between the heat-conducting heat sink 320 and the heat dissipation copper pipe 410. In this way, the air gap between the heat-conducting heat sink 320 and the light source module 200 and the heat dissipation copper pipe 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. The thermal conductivity of the phase-change heat-conducting material is ≥6 W / mk, and the thickness is ≤0.1 mm. The phase-change heat-conducting material can specifically adopt various suitable phase-change heat-conducting glues. There are various types of phase-change heat-conducting glues, and the designer can flexibly select according to actual needs.

[0065] Please refer to FIG. 3, in some embodiments, the heat dissipation assembly 400 further comprises a mounting plate 401, which is located between the heat dissipation copper pipe 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 pipe 410. As shown in FIG. 3, the mounting plate 401 is also provided with a first heat conduction hole 4001, which serves as a channel for guiding the heat generated by the light source module 200 to the heat dissipation copper pipe 410. The first heat conduction hole 4001 can be polygonal, circular, elliptical, etc., which is not specifically limited in the present application.

[0066] Please refer to FIGS. 3 to 5, the shape of the second heat conduction hole 431 is similar to that of the first heat conduction hole 4001, and the second heat conduction hole 431 can be quadrangular. In addition, in order to avoid various electrical elements 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 avoiding gap 432 and / or an avoiding hole 433.

[0067] Further, the orthographic projection of the second heat conduction hole 431 on the mounting plate 401 is located within the first heat conduction hole 4001, that is, the size of the second heat conduction hole 431 is smaller than that of the first heat conduction hole 4001, so that part of the heat conduction gasket 430 can be exposed to the mounting plate 401. Therefore, the heat conduction gasket 430 can be in direct contact with the heat dissipation copper pipe 410 through the first heat conduction hole 4001, and the heat dissipation copper pipe 410 can further dissipate the heat of the circuit board 300 collected by the heat conduction gasket 430.

[0068] The structure of the heat dissipation copper pipe 410 can be various, for example, referring to FIGS. 3, 6 and 7, in some embodiments, the heat dissipation copper pipe 410 can comprise a heat absorption pipe segment 411, a heat dissipation pipe segment 412 and a connecting pipe segment 413. The heat absorption pipe segment 411 has a first adhering surface which adheres to the heat conduction gasket 430; the heat dissipation pipe segment 412 is spaced apart from the heat absorption pipe segment 411; and the two ends of the connecting pipe segment 413 are in communication with the heat absorption pipe segment 411 and the heat dissipation pipe segment 412, respectively. The heat generated by the light source module 200 can be sequentially conducted out of the headlamp 10 through the heat absorption pipe segment 411, the connecting pipe segment 413 and the heat dissipation pipe segment 412.

[0069] Since the size of the second heat conduction hole 431 is smaller than that of the first heat conduction hole 4001, part of the structure of the heat conduction gasket 430 will not be blocked by the mounting plate 401, and the heat conduction gasket 430 can be in direct contact with the first adhering surface of the heat absorption pipe segment 411 of the heat dissipation copper pipe 410 corresponding to the first heat conduction hole 4001. Then, through the connecting pipe segment 413 and the heat dissipation pipe segment 412, the heat on the circuit board 300 absorbed by the heat conduction gasket 430 can be conducted out of the headlamp 10, effectively reducing the heat of the circuit board 300.

[0070] 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 pipe 410 can be formed with micro-channels, and the inside of the heat dissipation copper pipe 410 is a negative pressure environment and is filled with cooling liquid. Among them, the cooling liquid can be pure water, or can be alcohol type, glycerol type and other special cooling liquid. The negative pressure state inside the heat dissipation copper pipe 410 can reduce the boiling point of the cooling liquid inside the heat dissipation copper pipe 410.

[0071] In this way, when the heat generated by the headlamp 10 is transferred to the heat absorption pipe section 411 of the heat dissipation copper pipe 410, the cooling liquid in the heat absorption pipe section 411 under the negative pressure environment is heated and evaporated, and flows from the heat absorption 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 absorption pipe section 411, and the gaseous cooling liquid condenses in the heat dissipation pipe section 412 and the heat is dissipated from the headlamp 10. Subsequently, the cooling liquid in the heat dissipation pipe section 412 can gradually flow back to the heat absorption pipe section 411 under the capillary action of the micro-channels on the inner wall of the heat dissipation copper pipe 410. Specifically, because the inner wall of the heat dissipation copper pipe 410 has many small micro-channels, the cooling liquid is adsorbed in these small micro-channels, and under the joint action of the surface tension, cohesion and adhesion of the cooling liquid, it can gradually flow back to the heat absorption pipe section 411 from the heat dissipation pipe section 412. Therefore, the cooling liquid can be circulated between the heat absorption pipe section 411 and the heat dissipation pipe section 412, so as to continuously transfer the heat generated by the headlamp 10 from the heat absorption pipe section 411 to the heat dissipation pipe section 412 and dissipate to the outside of the headlamp 10. It can be seen that the heat dissipation effect of the headlamp 10 can be further improved by the scheme.

[0072] It can be understood that the structure of the heat dissipation copper pipe 410 can be various. In a possible implementation, the heat dissipation copper pipe 410 can be formed by twice bending to form a structure similar to a “Fang” character, and in addition, the heat absorption pipe section 411 and the heat dissipation pipe section 412 of the heat dissipation copper pipe 410 can be arranged in a staggered manner. For example, referring to FIGS. 6 and 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 a certain angle with the heat absorption pipe section 411 and the heat dissipation pipe section 412. For example, referring to FIG. 7, the connecting pipe section 413 can be arranged perpendicular to the heat absorption pipe section 411 and the heat dissipation pipe section 412. In addition, it can also be arranged at an acute angle or an obtuse angle according to actual needs, and the embodiments of the present application do not make specific limitations.

[0073] The heat absorption pipe section 411 can have a fitting plane, which 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 relatively fitting planes by stamping, extruding, etc.

[0074] In some embodiments, as shown in FIGS. 6-8, the heat dissipation copper pipe 410 is two, and the heat absorption pipe sections 411 of the two heat dissipation copper pipes 410 are adjacent and arranged in an upper and lower side-by-side manner. It can be understood that the adjacent arrangement of multiple heat absorption pipe sections 411 is more compact, which can better cover the heat dissipation component. The upper and lower side-by-side arrangement of the heat absorption pipe sections 411 also facilitates the installation and fixation of the heat dissipation copper pipe 410.

[0075] Further, as shown in FIGS. 7 and 8, in the vertical direction, in the upper heat dissipation copper pipe 410, the heat dissipation pipe section 412 is located more upward relative to the heat absorption pipe section 411. In this way, in addition to the capillary effect, the heat dissipation pipe section 412 can accelerate the return flow to the heat absorption pipe section 411 under the action of gravity, so that the cooling liquid in the heat dissipation copper pipe 410 can return to the heat absorption pipe section 411 more quickly.

[0076] Please continue to refer to FIGS. 7 and 8, in the lower heat dissipation copper pipe 410, the heat dissipation pipe section 412 is located more downward relative to the heat absorption pipe section 411. In this way, the heat dissipation pipe section 412 of the upper heat dissipation copper pipe 410 and the heat dissipation pipe section 412 of the lower heat dissipation copper pipe 410 can maintain sufficient space to avoid affecting the heat dissipation effect of each other.

[0077] As shown in FIGS. 6-9, in some embodiments, the heat dissipation assembly 400 can further include a plurality of heat dissipation fins 420, which are arranged in a spaced manner 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 fin 420, and the heat dissipation fin 420 is provided with a through hole 421 for accommodating the heat dissipation pipe section 412. In this way, the heat of the heat dissipation pipe section 412 can be better conducted out through the heat dissipation fin 420.

[0078] In order to further improve the heat dissipation effect, the heat absorption pipe section 411 further has a second abutting surface which abuts with the end of the heat dissipation fin 420. That is, the first abutting surface abuts with the heat conduction pad 430 and the heat conduction heat sink 320, and the second abutting surface abuts with the end of the heat dissipation fin 420. In this way, the heat absorbed by the heat absorption pipe section 411 from the heat conduction pad 430 and the light source module 200 can be dissipated to the outside of the headlamp 10 through the heat dissipation fin 420. The heat dissipation copper pipe 410 can be a round pipe as a whole, and the heat absorption pipe section 411 is processed into a flat structure with the first abutting surface and the second abutting surface by stamping, extruding or the like.

[0079] In some embodiments, as shown in FIG. 2, FIG. 10 to FIG. 13, the heat dissipation assembly 400 can further include a heat dissipation fan 440 and a fan housing 450. The plurality of heat dissipation fins 420 are arranged in parallel and spaced apart from each other. The heat dissipation fan 440 has an air inlet 441 and an air outlet 442. The heat dissipation fan 440 provides a heat dissipation airflow to the gap between the adjacent heat dissipation fins 420 through the air outlet 442. The fan housing 450 is connected with the mounting plate 401. The fan housing 450 is arranged around the outer periphery of the heat dissipation fan 440. The fan housing 450 is provided with at least two flow guide portions 451 corresponding to the air outlet 442 of the heat dissipation fan 440, so as to converge the heat dissipation airflow between the at least two flow guide portions 451.

[0080] In the embodiments of the present application, the heat dissipation assembly 400 further includes the heat dissipation fan 440 and the fan housing 450. The fan housing 450 is arranged around the outer periphery of the heat dissipation fan 440. By arranging at least two flow guide portions 451 on the fan housing 450 corresponding to the air outlet 442 of the heat dissipation fan 440, the heat dissipation airflow generated by the heat dissipation fan 440 can be converged between the flow guide portions. In this way, the heat dissipation airflow can be reduced, and more heat dissipation airflow can act on the gap between the heat dissipation fins 420, thereby improving the heat dissipation efficiency of the heat dissipation assembly 400. It can be seen that the present solution can further improve the heat dissipation effect of the headlamp 10, reduce the probability of damage of the headlamp 10 due to overheating, and further improve the service life of the headlamp 10.

[0081] It can be understood that the number of flow guide portions 451 is at least two, that is, the number of flow guide portions 451 can be two, three, four, etc. Referring to FIG. 13, the two flow guide portions 451 can be oppositely arranged. The oppositely arranged two flow guide portions 451 can be in a shape of eight characters or a horn shape, and play a role in converging the heat dissipation airflow.

[0082] Exemplarily, referring to FIGS. 11-13, in some embodiments, the guide portion 451 comprises a bent segment 4511 and a vertical segment 4512. The bent segment 4511 is connected to the fan cover 450 and is inclined away from the cooling fan 440. In this case, the lower end of the bent segment 4511 can be connected to or integrally formed with the fan cover 450, and the upper end of the bent segment 4511 is inclined outwardly away from the cooling fan 440. The vertical segment 4512 is fixed to the end of the bent segment 4511 and extends towards the cooling fins 420. The vertical segment 4512 is slightly shorter than the bent segment 4511 and is mainly used to abut the bottom surface of the cooling fins 420.

[0083] In order to better connect with the cooling fins 420, referring to FIG. 11, in some embodiments, the plurality of cooling fins 420 are provided with protrusions 422 close to one side of the fan cover 450. The fan cover 450 is provided with recesses 4501 corresponding to the air outlets 442 of the cooling fan 440, and the recesses 4501 are in abutment with the protrusions 422. In this way, when the fan cover 450 is installed, the recesses 4501 of the fan cover 450 can be buckled on the protrusions 422, so as to tightly seal the gap between the cooling fan 440 and the cooling fins 420, avoid the overflow of cooling air from the gap between the cooling fan 440 and the cooling fins 420, and thus improve the cooling effect of the cooling assembly.

[0084] In addition, in order to facilitate the connection of the cooling fan 440 and the fan cover 450 and avoid the relative displacement between the cooling fan 440 and the fan cover 450 during use, the cooling fan 440 and the fan cover 450 can be connected by clamping. There are various clamping connection modes, and in some embodiments, a clamping groove 443 can be arranged on the peripheral side of the cooling fan 440, and a mounting notch 452 corresponding to the clamping groove 443 can be arranged on the fan cover 450, and the edge of the mounting notch 452 is provided with a clamping claw 4521 for clamping the clamping groove 443. In this way, the clamping claw 4521 on the fan cover 450 and the clamping groove 443 on the cooling fan 440 can be used to very conveniently connect the cooling fan 440 and the fan cover 450. When it is necessary to disassemble the fan cover 450, the clamping claw 4521 can be pried up, and the fan cover 450 can be separated from the cooling fan 440.

[0085] The claw 4521 and the clamping groove 443 can be multiple. For example, referring to FIG. 11, for the heat dissipation fan 440 having four sides, the claw 4521 and the clamping groove 443 can be arranged on each side. Of course, two sides can be selected, and the claw 4521 and the clamping groove 443 can be arranged on the two sides. For the claw 4521 and the clamping groove 443 arranged on each side, the number of the claw 4521 and the clamping groove 443 can be multiple. For example, referring to FIGS. 12 and 13, the claw 4521 can be two and arranged at intervals. It can be understood that the more the number of the claw 4521, the tighter the clamping connection between the heat dissipation fan 440 and the fan housing 450.

[0086] Please continue to refer to FIGS. 10 to 13. In order to effectively support the heat dissipation fan 440, in some embodiments, the fan housing 450 is bent to extend the 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 can abut against the heat dissipation fan 440 through the extension plate 453, thereby providing effective support for the heat dissipation fan 440.

[0087] It should be noted that the number and mounting position of the extension plate 453 are related to the number and position of the mounting gap 452 or the claw 4521 on the fan housing 450. For example, referring to FIGS. 12 and 13, when the number of the mounting gap 452 or the claw 4521 is two and arranged opposite to each other at the air inlet 441 of the fan housing 450, the number of the extension plate 453 can be one or two, and arranged adjacent to the mounting gap 452 or the claw 4521.

[0088] In order to avoid the extension plate 453 affecting the heat dissipation airflow of the air inlet 441 of the fan housing 450, in some embodiments, a second avoiding gap 4531 can also be arranged on the extension plate 453.

[0089] Referring to FIGS. 11 and 13, the heat dissipation fan 440 is connected to the power supply through the wire harness 444. In order to facilitate wiring and fixation of the wire harness, in some embodiments, a wiring gap 454 can also be arranged on the fan housing 450, and a wire clamping part 4541 can be formed corresponding to the wiring gap 454. The wire harness can extend out of the fan housing 450 through the wiring gap 454 and be connected to the power supply. The wire clamping part 4541 is used to provide clamping force to the wire harness. As shown in FIG. 13, the wire clamping part 4541 can be arranged on the side wall of the wiring gap 454 and in a cantilevered manner. When the wire harness is clamped in the wire clamping part 4541, the cantilevered end of the wire clamping part 4541 can provide clamping force to the wire harness, thereby fixing the wire harness. In addition, arranging the second avoiding gap 4531 and the wiring gap 454 can also reduce the weight of the heat dissipation assembly 400.

[0090] The fixing connection between the fan cover 450 and the mounting plate 401 can be in various forms, such as bonding, buckle connection, screw connection, etc. Referring to FIGS. 11-12, in some embodiments, a connecting column 4002 extending away from the mounting plate 401 can be provided on one side of the mounting plate 401, and an internally threaded hole is provided on the connecting column 4002. Meanwhile, a baffle 455 abutting against the mounting plate 401 is provided on the peripheral side of the fan cover 450, and a connecting hole 4551 is provided on the baffle 455 corresponding to the internally threaded hole. In this way, the fan cover 450 and the mounting plate 401 can be fixedly connected by a screw passing through the connecting hole 4551 and the internally threaded hole.

[0091] In order to quickly install the fan cover 450 and the mounting plate 401, referring to FIGS. 11-12, in some embodiments, a guide plate 456 can be provided on the fan cover 450 corresponding to both sides of the connecting column 4002. When installing the fan cover 450 and the mounting plate 401, the connecting column 4002 is only needed to be inserted into the two guide plates 456, and the mounting plate 401 or the fan cover 450 is pushed along the guide plates 456, so that the connecting column 4002 abuts against the baffle 455, and the fan cover 450 and the mounting plate 401 can be installed in place. It can be understood that the distance between the two guide plates 456 can be gradually reduced in the direction close to the baffle 455, and at the same time, the connecting column 4002 can also be correspondingly provided in a tapered shape and the small end is close to the baffle 455. In this way, the connecting column 4002 can be more easily aligned when being inserted towards the two guide plates 456.

[0092] In addition, referring to FIG. 12, in some embodiments, a first protrusion 457 protruding towards the connecting column 4002 is formed on the guide plate 456, and / or a second protrusion 458 protruding towards the connecting column 4002 is formed on the fan cover 450. The two first protrusions 457 on the two guide plates 456 are oppositely arranged, and when the connecting column 4002 is inserted into the baffle 455, the two first protrusions 457 can press the connecting column 4002 to prevent the connecting column 4002 from shaking relative to the baffle 455. On the basis of the first protrusion 457 protruding towards the connecting column 4002 provided on the guide plate 456, the second protrusion 458 protruding towards the connecting column 4002 can also be formed on the fan cover 450. Under the joint action of the first protrusion 457 and the second protrusion 458, the connecting column 4002 can be further pressed to prevent the connecting column 4002 from shaking relative to the baffle 455 and the fan cover 450.

[0093] Please refer to Fig. 1, Fig. 14 to Fig. 17, in some embodiments, the lens assembly 100 comprises a lens structure 110 and a support structure 120. The lens structure 110 is used for receiving and diverging the light emitted by the light source module 200, one side of the support structure 120 is connected with the lens structure 110, and the other side is connected with the circuit board 300. The support structure 120 is used for supporting the lens structure 110. By arranging the support structure 120, on the one hand, the lens structure 110 can be supported, and on the other hand, the support structure 120 can be used as a substrate for fixing the circuit board 300, thereby facilitating the improvement of the strength of the lens assembly 100 and the convenience of connection with other components.

[0094] Further, the support structure 120 comprises a base 121 and a first connecting piece 122 connected with each other, the first connecting piece 122 is connected with the lens structure 110, and the base 121 is connected with the circuit board 300. The base 121 comprises a housing part 1211 and a rib part 1214. The housing part 1211 surrounds a light transmission opening 1212 for transmitting light, and the housing part 1211 has a weight-reducing cavity 1213. The rib part 1214 is located in the weight-reducing cavity 1213 and connected with the housing part 1211.

[0095] In the embodiment of the present application, the light transmission opening 1212 is used for the light emitted by the light source module 200 to pass through. The size, shape, etc. of the light transmission opening 1212 are not limited in the embodiment of the present application, as long as the light transmission opening 1212 can pass the light emitted by the light source module 200. In some embodiments, the light transmission opening 1212 is configured as a rectangular hole.

[0096] The rib part 1214 is used for strengthening the structural strength of the housing part 1211. The structure of the rib part 1214 is not limited in the embodiment of the present application, as long as the rib part 1214 can support the housing part 1211. For example, the rib part 1214 in the embodiment of the present application is configured as a grid structure, and the grid structure is connected between the grid bars to better support the housing part 1211.

[0097] The support structure 120 of the embodiment of the present application supports the lens structure 110, the first connecting piece 122 connects the support structure 120 and the lens structure 110, the housing part 1211 is provided with the light transmission opening 1212, so that the light can pass through the support structure 120 and enter the lens structure 110, the housing part 1211 is provided with the weight-reducing cavity 1213, so that the weight of the support structure 120 can be reduced, and the rib part 1214 is located in the weight-reducing cavity 1213, so that the structure of the housing part 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.

[0098] Please refer to FIG. 15 to FIG. 17, in some embodiments, the shell part 1211 is recessed to form a weight-reducing cavity 1213 on the side close to the light source module 200 in the direction away from the light source module 200, and the first connecting piece 122 is protruded on the end face of the base 121 away from the light source module 200.

[0099] The shell part 1211 is recessed to form a weight-reducing cavity 1213 on the side close to the light source module 200, which ensures that the shell part 1211 has a solid structure on the side away from the light source module 200. At this time, the first connecting piece 122 can be protruded on 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 large space in the length direction of the lens assembly 100, the first connecting piece 122 is protruded on the end face of the base 121 away from the light source module 200, so that the first connecting piece 122 and the base 121 are arranged along the axis direction of the lens structure 110, thereby reducing the space occupied by the lens structure 110 in the radial direction of the lens assembly 100.

[0100] The weight-reducing cavity 1213 is used to reduce the weight of the base 121. In the embodiments of the present application, the shape of the weight-reducing cavity 1213 is not limited, as long as the weight-reducing cavity 1213 can reduce the weight of the base 121. In some embodiments, the shell part 1211 is made of sheet metal stamping, so that the weight-reducing cavity 1213 can be arranged around the shell part 1211 when the shell part 1211 is manufactured. After the shell part 1211 is manufactured, the shell part 1211 is connected with the rib part 1214. In other embodiments of the present application, the shell part 1211 and the rib part 1214 are integrally injection molded, that is, the shell part 1211 forms the weight-reducing cavity 1213 after the base 121 is injection molded, and the shell part 1211 is connected with the rib part 1214.

[0101] Please refer to FIG. 15 to FIG. 18, in some embodiments, the lens structure 110 includes a lens barrel 114 and a second connecting piece 115 fixed on the side of the lens barrel 114, the second connecting piece 115 is fixedly connected with the first connecting piece 122, and the mutual connection of the second connecting piece 115 and the first connecting piece 122 realizes the mutual connection of the lens structure 110 and the support structure 120.

[0102] The connection mode of the first connecting piece 122 and the second connecting piece 115 is not limited in the embodiments of the present application. For example, in some embodiments, one of the first connecting piece 122 and the second connecting piece 115 has a connecting groove 1221, and the other is at least partially in the connecting groove 1221. The preliminary connection of the first connecting piece 122 and the second connecting piece 115 is achieved by clamping the second connecting piece 115 into the connecting groove 1221 provided on the first connecting piece 122, or clamping the first connecting piece 122 into the connecting groove 1221 provided on the second connecting piece 115. On this basis, the first connecting piece 122 and the second connecting piece 115 can be further connected by bolts, pins or other connecting pieces to reinforce the connection strength between the first connecting piece 122 and the second connecting piece 115.

[0103] Please refer to FIGS. 16-18. In some embodiments, the second connecting piece 115 and the connecting groove 1221 are arranged along the axis direction of the lens structure 110. The first connecting piece 122 has the connecting groove 1221 which is communicated with the side wall of the first connecting piece 122 away from the base 121. The second connecting piece 115 is in sliding connection with the groove wall of the connecting groove 1221. When the first connecting piece 122 has the connecting groove 1221, the second connecting piece 115 is slid along the groove wall of the connecting groove 1221 into the connecting groove 1221 during the assembly of the lens structure 110 and the support structure 120. Since the connecting groove 1221 and the second connecting piece 115 are arranged along the axis direction of the lens structure 110, the connecting groove 1221 can guide the second connecting piece 115 at this time, and the relative positions of the lens structure 110 and the support structure 120 can be fixed when the second connecting piece 115 is in the connecting groove 1221.

[0104] In other embodiments, the first connecting piece 122 and the connecting groove 1221 are arranged along the axis direction of the lens structure 110. The second connecting piece 115 has the connecting groove 1221 which is communicated with the side wall of the second connecting piece 115 away from the base 121. The first connecting piece 122 is in sliding connection with the groove wall of the connecting groove 1221. When the second connecting piece 115 has the connecting groove 1221, the first connecting piece 122 is slid along the groove wall of the connecting groove 1221 into the connecting groove 1221 during the assembly of the lens structure 110 and the support structure 120. Since the connecting groove 1221 and the first connecting piece 122 are arranged along the axis direction of the lens assembly 100, the connecting groove 1221 can guide the first connecting piece 122 at this time, and the relative positions of the lens structure 110 and the support structure 120 can be fixed when the first connecting piece 122 is in the connecting groove 1221.

[0105] In some embodiments, the first connecting member 122 has a connecting groove 1221, and the lens structure 110 further comprises a limiting member 113 fixed to the circumferential side of the lens barrel 114, and the limiting member 113 is connected to the end surface of the second connecting member 115 away from the base 121, so that the first connecting member 122 or the second connecting member 115 can be prevented from completely entering into the connecting groove 1221. In some embodiments, the limiting member 113 and the first connecting member 122 form a "T" shape.

[0106] Please refer to FIG. 15 and FIG. 17, in some embodiments, the end surface of the base 121 away from the first connecting member 122 has a receiving groove 1215, and the support structure 120 further comprises a sealing member 123, the sealing member 123 is partially in the receiving groove 1215, and protrudes from the end surface of the base 121 away from the first connecting member 122. The sealing member 123 can improve the sealing 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.

[0107] Optionally, the sealing member 123 is an elastic sealing ring, and the elastic sealing ring is partially in the receiving groove 1215, and the elastic sealing ring is pressed between the circuit board 300 and the base 121 when the circuit board 300 and the base 121 are connected to each other, so that the elastic sealing ring is in close contact with the circuit board 300 and the groove wall of the receiving groove 1215.

[0108] Please refer to FIG. 1, FIG. 2, FIG. 19 to FIG. 21, in some embodiments, the light source module 200 is located at the image source side, and the lens structure 110 is located at the imaging side, and the lens structure 110 further comprises a plurality of lenses 101 with optical power located in the lens barrel 114, and the plurality of lenses 101 along the first optical axis 102 from the imaging side to the image source side comprises a first lens L1, a second lens L2, a third lens L3 and a fourth lens L4 in sequence, and 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, and each lens 101 in the lens structure 110 is coaxially arranged, and the common axis of each lens 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.

[0109] 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; the imaging side surface S3 of the second lens L2 is convex near the first optical axis 102, and the image source side surface S4 is concave near the first optical axis 102; the light rays are converged by the first lens L1 and then expanded by the second lens L2, so that the light rays entering the lens structure 110 are gradually flattened, the second lens L2 is designed as a convex-concave surface, which helps to reduce the chief ray incidence angle of the light rays on the imaging side surface and the image source side surface of the above two lenses, and reduces the generation of off-axis aberrations; 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, which helps to expand the light rays, and is beneficial to the miniaturization design of the lens, and plays an important role in reducing the thickness of the lens; the imaging side surface S7 of the fourth lens L4 is convex near the first optical axis 102, and the image source side surface S8 is concave near the first optical axis 102, which further shortens the length of the lens structure 110 in the direction of the first optical axis 102, and the convex-concave surface design avoids the light rays converging too fast on the first optical axis 102, thereby effectively reducing the field curvature and improving the overall imaging quality. Through the reasonable design of the surface type of the first lens L1 to the fourth lens L4, the use of lenses can be reduced, and the lens structure 110 only uses four lenses 101, that is, on the basis of miniaturization design of the lens assembly 100, the imaging quality is improved.

[0110] In the embodiment of the application, the imaging side surface S1 and the image source side surface S2 of the first lens L1 are both aspherical surfaces; and the imaging side surface S3 and the image 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 is called to have an aspherical surface type. The aspherical surface design can help the lens structure 110 to more effectively eliminate aberrations and improve imaging quality. When a certain lens surface is an aspherical surface, the lens surface can have a reverse point, at which the type of the surface 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 image source side surface S4 is concave near the first optical axis 102. The aspherical surface design of the reverse point can correct the field curvature and distortion aberration of the edge field in the lens structure 110, and improve the imaging quality. The imaging side surface S5 and the image source side surface S6 of the third lens L3 are both spherical surfaces; and the imaging side surface S7 and the image source side surface S8 of the fourth lens L4 are both spherical surfaces. The spherical surface type design can reduce the difficulty of lens preparation and the preparation cost. In the embodiment of the application, in order to balance the preparation cost, the preparation difficulty, the imaging quality, the assembly difficulty and the like, the design of the surface of each lens in the lens structure 110 is a combination of spherical and aspherical surface types.

[0111] The first lens L1 and the second lens L2 are plastic lenses. The material of the plastic lenses can be polycarbonate, gum, etc. The lenses made of plastic material can reduce the production cost of the lens structure 110. The use of plastic lenses can effectively reduce the aberration of the lens structure 110, reduce the length of the lens structure 110, and make the overall weight of the lens structure 110 lighter. The third lens L3 and the fourth lens L4 are glass lenses. The glass lenses can withstand high or low temperatures and have excellent optical effects and better stability. The use of the temperature compensation effect of the glass material of the third lens L3 and the fourth lens L4 can effectively reduce the influence of temperature changes of the projection light on the lens structure 110, thereby maintaining better and stable imaging quality. The combination of glass lenses and plastic lenses can adjust the temperature compensation of the entire lens structure 110 by using the smaller expansion coefficient of glass and the larger expansion coefficient of plastic, and is conducive to reducing the spherical aberration of the lens structure 110 and optimizing the field curvature and distortion of the lens structure 110.

[0112] 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 reflected light, thereby increasing the intensity of transmitted light, making the lens assembly 100 image clearer. The principle is to use the interference effect of different optical material film layers to eliminate incident light and 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 transmittance of the second lens L2 to reduce the surface reflection of the second lens L2 and increase the transmittance of the second lens L2. 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 transmittance 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.

[0113] In some embodiments, the light source module 200 emits light on the image source side of the lens assembly 100, thereby increasing 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, i.e., the fourth lens L4 is closest to the light source module 200, the temperature resistance of the fourth lens L4 in the embodiment is not less than 150°C, and the temperature resistance of the first lens L1, the second lens L2, and the third lens L3 is not less than 105°C, thereby ensuring the normal work of the four lenses.

[0114] In some embodiments, the lens structure 110 satisfies the condition formula: 30mm≤f≤40mm, for example, f can be 30mm, 31mm, 32mm, 35mm, 36mm or 40mm, etc., where f is the effective focal length of the lens assembly 100. Based on the above embodiments, by reasonably limiting the effective focal length of the lens structure 110, the lens assembly 100 can improve the imaging quality while ensuring miniaturization.

[0115] In some embodiments, the lens structure 110 satisfies the condition 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 use requirements of the lens structure 110.

[0116] Further, the lens structure 110 satisfies the condition formula: 40mm≤EDP≤55mm, for example, EDP can be 40mm, 43mm, 45mm, 46mm, 50mm or 55mm, etc., where EDP is the entrance pupil diameter of the lens structure 110.

[0117] Based on the above embodiments, by reasonably limiting 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, so that the lens structure 110 can meet the large image surface and high-quality imaging while ensuring that the lens structure 110 meets the sufficient image surface brightness of the edge field of view to prevent the small entrance pupil diameter from being not conducive to the improvement of the large aperture lens structure 110 and the image surface brightness, and at the same time, it can prevent the entrance pupil diameter from being too large, thereby reducing the astigmatism of the edge field of view light bundle, which is beneficial to the improvement of the imaging quality of the lens structure 110 and prevents the image surface from being curved, which is beneficial to improving the lens resolution of the lens structure 110.

[0118] Further, in some embodiments, the lens structure 110 satisfies the condition 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 limiting 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 demand for field of view angle, providing a combination effect of large view angle and large aperture. When f / EDP<0.55, that is, when a small view angle is selected with a large aperture, the design difficulty will be increased, the lens aperture will be further expanded, which is not conducive to reducing tolerance sensitivity and improving yield; when f / EDP>0.7, that is, when a large view angle is selected with a small aperture, the relative luminance of the peripheral field of view will be insufficient, and the resolving power will be insufficient, thereby not conducive to improving the imaging quality of the lens structure 110.

[0119] In summary, the embodiment of the present application balances the optical path difference between the central field of view and the edge field of view by reasonably designing the surface type and material of the first lens L1 to the fourth lens L4 and reasonably limiting the maximum field of view angle and the entrance pupil diameter of the lens structure 110, thereby effectively improving the field curvature value and the distortion of the lens assembly 100 to control the distortion of the lens assembly 100 within-5% to 5% and improve the imaging quality.

[0120] The lens structure 110 will be described in detail below in combination with specific parameters.

[0121] The structural schematic diagram of the lens structure 110 of the embodiment of the present application is shown in FIG. 20. The lens structure 110 includes the first lens L1, the second lens L2, the third lens L3 and the fourth lens L4 in sequence from the imaging side to the image source side along the first optical axis 102, wherein the first lens L1 and the second lens L2 are plastic lenses, and the third lens L3 and the fourth lens L4 are glass lenses.

[0122] 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 aspheric lens. The imaging side surface S3 of the second lens L2 is convex near the first optical axis 102, the image source side surface S4 is concave near the first optical axis 102, and the second lens L2 is a plastic aspheric 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, the image source side surface S8 is concave near the first optical axis 102, and the fourth lens L4 is a glass spherical lens.

[0123] In an embodiment, the focal length reference wavelength of each lens is 546.1 nm, and the reference wavelength of the refractive index and the Abbe number is 546.1 nm. In the lens structure 110, f=30.56 mm, FNO=0.63, FOV=9°, and TTL=63.8 mm, where f is the effective focal length of the lens structure 110, FNO represents the aperture number, FOV represents the maximum field of view angle of the lens structure 110, and TTL represents the distance from the imaging side of the first lens L1 to the image source side on the first optical axis 102.

[0124] For the aspheric first lens L1 and the second lens L2, the aspheric surface satisfies the aspheric equation:

[0125] wherein Z is the distance from the corresponding point on the aspheric surface to the plane tangent to the surface vertex, r is the distance from the corresponding point on the aspheric surface to the first optical axis 102, c represents the curvature of the surface at the vertex, K represents the conic constant, A4, A6, A8, A10 and A12 are aspheric coefficients, and the aspheric surface is a paraxial surface. 10, A 12 , A 14 , A 16 , A 18 , A 20 respectively represent the aspherical surface coefficients of 4th order, 6th order, 8th order, 10th order and 12th order.

[0126] Fig. 21 is a graph of the astigmatism curve and the distortion curve in an embodiment.

[0127] The horizontal axis of the astigmatism curve represents the image surface offset, and the vertical axis represents the field of view. In Fig. 21, the image surface offset of different fields of view is within -17.5 microns to 10.5 microns when the wavelengths 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, which indicates that the spherical aberration of the lens structure 110 in the embodiment is small, and the imaging quality is good.

[0128] The horizontal axis of the distortion curve represents the distortion rate, and the vertical axis represents the field of view. The distortion curve in Fig. 21 shows that the distortion of the lens structure 110 in the embodiment is well corrected when the wavelengths are 656 nm, 486 nm, 435 nm, 387 nm and 346 nm respectively.

[0129] As can be seen from the astigmatism curve and the distortion curve in Fig. 21, the astigmatism and the distortion of the lens structure 110 are well controlled, so that the lens structure 110 of the embodiment has good imaging quality.

[0130] Please refer to Figs. 22 to 25. In some embodiments, the lens structure 110 has a first optical axis 102. The center of the light source module 200 deviates from the first optical axis 102, so that the center line 701 of the emission field of view 700 corresponding to the light source module 200 intersects the first optical axis 102.

[0131] In the embodiment, the center of the light source module 200 is arranged to deviate from the first optical axis 102, so that the corresponding emission field of view 700 of the light source module 200 is deflected relative to the first optical axis 102. When the headlamp in the application is applied to a vehicle, the lens structure 110 of the lens assembly 100 can be arranged towards the front of the vehicle, so that the first optical axis 102 extends along the front-rear direction of the vehicle. If the left headlamp of the vehicle adopts the headlamp in the application, the center of the light source module 200 can be arranged to deviate rightward relative to the first optical axis 102, so that the corresponding emission field of view 700 of the light source module 200 is deflected leftward relative to the first optical axis 102, so that the illumination range of the left front of the vehicle can be widened in the illumination mode, so that the illumination range of the whole vehicle can be widened. Similarly, if the right headlamp of the vehicle adopts the headlamp in the application, the center of the light source module 200 can be arranged to deviate leftward relative to the first optical axis 102, so that the corresponding emission field of view 700 of the light source module 200 is deflected rightward relative to the first optical axis 102, so that the illumination range of the right front of the vehicle can be widened in the illumination mode, so that the illumination range of the whole vehicle can be widened. In this way, the purpose of improving the projection clarity can be achieved, and the observation range of the driver will not be affected.

[0132] In some embodiments, as shown in FIG. 25, 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 arranged on both sides of the first optical axis 102 along a second direction, the first direction is the front-rear direction of the vehicle, and the second direction is the left-right direction of the vehicle, wherein the field of view angle α of the first sub-field of view 702 is greater than the field of view angle β of the second sub-field of view 703.

[0133] As shown in FIGS. 26 and 27, it can be understood that the light emitting devices 201 in the light source module 200 can be divided into two parts by the first optical axis 102, and each part contains a plurality of light emitting devices 201. The part on the right side of the first optical axis 102 is referred to as the first part 230, and the part on the left side of the first optical axis 102 is referred to as the second part 240. Based on the imaging law of the lens assembly 100, the light emitted by the first part 230 forms a sub-field of view on the left side of the first optical axis 102 after passing through the lens assembly 100, and the light emitted by the second part 240 forms a sub-field of view on the right side of the first optical axis 102 after passing through the lens assembly 100.

[0134] In the embodiment, the first sub-field of view 702 and the second sub-field of view 703 are respectively the sub-fields of view on both sides of the first optical axis 102, wherein the field of view angle of the first sub-field of view 702 is greater than the field of view angle of the second sub-field of view 703, that is, the emission field of view 700 of the light source module 200 is deflected relative to the first optical axis 102.

[0135] Further, the first sub field of view 702 has a field of view angle a of 15 degrees, and the second sub field of view 703 has a field of view angle of 9 degrees. At this time, the light source module 200 corresponds to a field of view angle b of the emission field of view 700 of 24 degrees. Through testing, if one of the left headlamp and the right headlamp of the vehicle has a field of view angle of 24 degrees and is deflected by 3°, and the other has a field of view angle of 36 degrees and is not deflected, then the left headlamp and the right headlamp can jointly illuminate six lanes when used together, thereby well meeting the observation requirements of the driver when driving.

[0136] Further, along the second direction, the center of the light source module 200 is offset from the first optical axis 102 by a distance 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 also can ensure that the degree of deflection is not too large.

[0137] Further, along the height direction of the vehicle, the center of the light source module 200 is offset from the first optical axis 102 by a distance greater than or equal to 0.7 mm and less than or equal to 1.2 mm. In this way, when the headlamp 10 is installed on the vehicle, the center of the light source module 200 is higher than the first optical axis 102 by a distance of 0.7 mm to 1.2 mm, which is conducive to causing the projected image or video to fall on the ground in front of the vehicle.

[0138] In some embodiments, as shown in FIG. 28, a portion of the plurality of light emitting devices 201 constitutes a first device group 210, and another portion constitutes a second device group 220, and the light emitting devices 201 in the first device group 210 and the second device group 220 are both plural. In the illumination mode, all of the light emitting devices 201 in the first device group 210 emit light, and all of the light emitting devices 201 in the second device group 220 emit light. In the projection mode, all of the light emitting devices 201 in the first device emit light, and all of the light emitting devices 201 in the second device do not emit light.

[0139] In the embodiment of the present application, 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 the functional requirements, wherein the light emitting devices 201 in the first device group 210 are used for both projection and illumination, and the light emitting devices 201 in the second device group 220 are used for illumination only. That is, when the light source module 200 is in the illumination mode, the light emitting devices 201 in the first device group 210 and the second device group 220 emit light, so as to maximize the illumination brightness. In the projection mode, only the light emitting devices 201 in the first device group 210 emit light, so that when the light emitting devices 201 in the first device group 210 are distributed in a specific pattern, the projected light can form an image in a specific pattern. It can be understood that, in the projection mode, the light emitting devices 201 in the second device group 220 do not emit light in the embodiment of the present application, which makes the illumination range smaller in the mode, and therefore, the mode is suitable for projection when the vehicle is in the parking state.

[0140] In some other embodiments, a part of the plurality of light emitting devices 201 constitutes the first device group 210, and the other part constitutes the second device group 220, and the light emitting devices 201 in the first device group 210 and the second device group 220 are both 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 light emitting intensity of the light emitting devices 201 in the first device group 210 is equal to the light emitting 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 group 210 emit light, all the light emitting devices 201 in the second device group 220 emit light, and the light emitting intensity of the light emitting devices 201 in the first device group 210 is greater than the light emitting intensity of the light emitting devices 201 in the second device group 220.

[0141] In the embodiment of the present application, 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, and similarly, the light emitting devices 201 in the first device group 210 are used for both projection and illumination, and the light emitting devices 201 in the second device group 220 are used for illumination only. However, different from the foregoing embodiment, in the projection mode, the light emitting devices 201 in the first device group 210 and the second device group 220 both emit light, but the light emitting intensities of the two groups of light emitting devices 201 are different, that is, the light emitting intensity of the light emitting devices 201 in the first device group 210 is greater, so that the light emitting devices 201 in the second device group 220 can also provide illumination while forming the projected image. This mode can be used for projection when the vehicle is in the parking state, and can also be used for projection when the vehicle is in the driving state.

[0142] In one embodiment, the center of the first device group 210 is located on the first optical axis 102. In this way, in the projection mode, the projected image or video is in the front of the headlamp 10, not in the center of the front of the vehicle.

[0143] In another embodiment, the center of the first device group 210 deviates from the first optical axis 102. In this way, in the projection mode, the projected image or video deviates from the front of the headlamp. For example, the projected image or video can be at the center of the front of the vehicle.

[0144] Referring to FIGS. 14, 15 and 29, in some embodiments, the headlamp 10 further comprises a heat shield 600 located between the circuit board 300 and the lens assembly 100 and connected with the lens assembly 100, and the heat shield 600 has a light transmission hole 611 corresponding to the light source module 200.

[0145] In the embodiment of the present application, when the headlamp 10 is working, the circuit board 300 supplies power to the light source module 200 to make the light source module 200 emit light, the light emitted by the light source module 200 passes through the light transmission hole 611 on the heat shield 600 and enters the lens assembly 100, and after being dispersed by the lens assembly 100, a lighting or projection area is formed in front of the headlamp 10. Since the light source module 200 generates heat when working, at this time, the heat shield 600 can reduce the heat transferred from the light source module 200 to the lens assembly 100, and can block stray light generated by the light source module 200 from entering the lens assembly 100 to affect the lighting quality of the headlamp 10 module.

[0146] When the headlamp 10 is not working, part of the external light will enter the headlamp 10 module through the lens assembly 100. Since the lens assembly 100 has a dispersing effect on the light emitted by the light source module 200, the lens assembly 100 has a focusing effect on the light entering the headlamp 10 module from the outside, resulting in the external natural light entering the headlamp 10 module being converged into light with higher energy. At this time, the heat shield 600 can reduce the part of the external natural light entering the headlamp 10 module from shining on the circuit board 300 and the light source module 200, reducing the damage of the external natural light entering the headlamp 10 to the circuit board 300 and the light source module 200, and prolonging the service life of the headlamp 10 module.

[0147] It can be understood that the heat shield 600 in the embodiment of the present application can adopt two ways of physical extinction and chemical extinction. Physical extinction is to add an extinction agent to the paint, so that during the film forming process of the paint on the surface of the heat shield 600, the paint is precipitated to the surface of the coating to make the surface of the coating uneven, thereby increasing the scattering of light and reducing reflection. Chemical extinction is to introduce some structures or groups that can absorb light, such as polypropylene grafting substances, to obtain low gloss.

[0148] In some embodiments, the heat shield 600 is provided with a light-absorbing layer at least on the side facing the lens assembly 100. After the light-absorbing layer is provided on the side facing the lens assembly 100, the heat shield 600 can improve the ability of the heat shield 600 to absorb light entering the light source module 200 from the outside, further improving the protection of the circuit board 300 and the light source module 200 by the heat shield 600. After the light-absorbing layer is provided on the side facing away from the lens assembly 100, the heat shield 600 can absorb part of the stray light generated by the light source module 200, further improving the lighting quality of the headlamp 10. In the embodiments of the present application, the outer surface of the heat shield 600 is provided with a light-absorbing layer.

[0149] In some embodiments, the light-absorbing layer is a black zinc plating layer. The black zinc plating layer has good light extinction ability and solar heat absorption ability, which helps the heat shield 600 to eliminate stray light and external natural light emitted by the light source module 200 and to absorb stray light and external natural light emitted by the light source module 200. The light-absorbing layer in the embodiments of the present application can also be configured as other light-absorbing and / or light-absorbing materials, such as light-absorbing resin, etc.

[0150] Please refer to FIGS. 30 and 31. In some embodiments, the heat shield 600 includes a main body part 610 and a connecting part 620. The main body part 610 has a light transmission hole 611. The connecting part 620 is connected with the main body part 610, and the connecting part 620 is connected with the lens assembly 100.

[0151] The main body part 610 and the light source module 200 are arranged in the axial direction of the lens assembly 100 and do not directly contact each other. The heat generated after the external natural light is incident on the heat shield 600 can only be transmitted through the air. The heat shield 600 is connected with the lens assembly 100 through the connecting part 620, which can reduce the heat transmitted from the heat shield 600 to the light source module 200.

[0152] In order to ensure that the heat shield 600 blocks external natural light, in some embodiments, along the axial direction of the lens structure 110, the main body part 610 coincides with the end of the lens structure 110 close to the light source module 200. In this way, the external natural light can only be incident on the heat shield 600.

[0153] Please refer to FIGS. 29 to 32. In some embodiments, part of the edge of the main body part 610 forms a positioning edge 612. The lens structure 110 is provided with a first positioning part 111. The first positioning part 111 abuts against the positioning edge 612 to position the heat shield 600 when the heat shield 600 is assembled with the lens assembly 100.

[0154] The first positioning member 111 in the embodiment of the present application can be configured as a positioning protrusion. Any side wall of the positioning protrusion abuts against the positioning edge 612. The shape of the side wall of the positioning protrusion abutting against one side of the positioning edge 612 should be configured according to the shape of the positioning edge 612. Preferably, any side wall of the positioning protrusion can be arranged in close contact with the positioning edge 612.

[0155] Please refer to FIGS. 29-32. In some embodiments, the heat insulation sheet 600 further comprises a positioning portion 630 connected with the main body portion 610. The positioning portion 630 has a positioning hole 631. The lens assembly 100 is provided with a second positioning member 112. The second positioning member 112 is arranged in the positioning hole 631. When the heat insulation sheet 600 and the lens assembly 100 are assembled, the second positioning member 112 arranged in the positioning hole 631 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.

[0156] Please refer to FIGS. 29 and 30. In some embodiments, the second positioning member 112 is configured as a positioning column. After the positioning column is arranged in the positioning hole 631, the positioning column is in close contact with the hole wall of the positioning hole 631.

[0157] Please refer to FIGS. 29-32. In some embodiments, the heat insulation sheet 600 can be configured as a central symmetric structure. The main body portion 610 is configured as a central symmetric 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. The two connecting portions 620 are symmetrically arranged about the center of the main body portion 610.

[0158] Please refer to FIGS. 29-32. In some embodiments, the main body portion 610 is arranged to extend towards the circuit board 300 relative to the connecting portion 620 to form an adapter groove 613. The end of the lens structure 110 close to the circuit board 300 is arranged in the adapter groove 613 and connected with the heat insulation sheet 600. The lens holder 120 is connected with the lens structure 110 and connected with the circuit board 300.

[0159] After the main body portion 610 forms the adapter groove 613, one end of the lens structure 110 is arranged in the adapter groove 613. That is, the end of the lens structure 110 close to the light source module 200 is at least partially wrapped by the groove wall of the adapter groove 613. When the external natural light enters the headlamp 10 module through the lens structure 110, the groove wall of the adapter groove 613 can better block the external natural light and absorb the heat of the external natural light.

[0160] Please refer to FIG. 30 and FIG. 31, in some embodiments, the heat insulation sheet 600 has a weight-reducing opening 640, the weight-reducing opening 640 penetrates the heat insulation sheet 600 at the bending position of the main body part 610 and the connecting part 620, and the weight-reducing opening 640 penetrates the heat insulation sheet 600 at the bending position of the bottom wall and the side wall of the connecting groove 613. The weight-reducing opening 640 can reduce the weight of the heat insulation sheet 600, and in the manufacturing process of the heat insulation sheet 600, the sheet metal part needs to be bent to form the main body part 610, the connecting part 620 and the positioning part 630. Since the weight-reducing opening 640 is located at the position where the sheet metal part needs to be bent, it is convenient to bend the sheet metal part to form the heat insulation sheet 600. In order to reduce the weight-reducing opening 640 without affecting the light extinction and heat absorption capacity of the heat insulation sheet 600, in some embodiments, the weight-reducing opening 640 coincides with one end of the lens structure 110 in the connecting groove 613, that is, the lens structure 110 can abut the bottom wall of the connecting groove 613 to make the end of the lens structure 110 block the weight-reducing opening 640, preventing the light emitted by the light source module 200 and the external natural light from passing through the weight-reducing opening 640.

[0161] Please refer to FIG. 16 and FIG. 29, in some embodiments, the lens holder 120 is surrounded by a light passing opening 1212, and the heat insulation sheet 600 is located in the light passing opening 1212, which is protected by the lens holder 120, especially the black zinc plating layer on the heat insulation sheet 600, to ensure the light extinction and heat absorption capacity of the heat insulation sheet 600.

[0162] Another embodiment of the present application provides a vehicle, which comprises a left headlamp and a right headlamp, wherein at least one of the left headlamp and the right headlamp is the headlamp of the first aspect. Exemplarily, the vehicle can be a family car, a commercial car or a freight car, etc. The driving type of the vehicle is not limited, which can be a fuel car, an electric car or a hybrid car.

[0163] The vehicle of the embodiment of the present application has the same application concept as the headlamp in the above-mentioned embodiment, and therefore, the vehicle in the embodiment of the present application can obtain the technical effects of the headlamp in the above-mentioned embodiment.

[0164] It can be understood that the vehicle comprises a left headlamp and a right headlamp, wherein one of the left headlamp and the right headlamp adopts the headlamp in the above-mentioned embodiment, or both of the left headlamp and the right headlamp adopt the headlamp in the above-mentioned embodiment.

[0165] In one of the embodiments, the left headlamp is the headlamp in the above-mentioned embodiments, and the center of the light source module 200 is located right above the first optical axis 102. In this way, the corresponding emission field of view 700 of the light source module 200 is deflected to the left, which can expand the illumination range of the left front of the vehicle. In the case where the illumination field of view of the right headlamp is not deflected, 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 image or video is formed on the ground.

[0166] In another embodiment, the right headlamp is the headlamp, and the center of the light source module 200 is located left above the first optical axis 102. In this way, the corresponding emission field of view 700 of the light source module 200 is deflected to the right, which can expand the illumination range of the right front of the vehicle. In the case where the illumination field of view of the left headlamp is not deflected, 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 image or video is formed on the ground.

[0167] FIG. 33 is a flowchart of a control method of a vehicle headlamp according to an embodiment of the present application, and FIG. 34 is a structural block diagram of the vehicle headlamp in FIG. 33. The vehicle headlamp 10 involved includes an illumination module 800 for illumination and a projection module 900 for projection. The illumination module 800 is used to make the vehicle headlamp in the illumination mode as described above, and the projection module 900 is used to make the vehicle headlamp in the projection mode as described above. It is understood that the vehicle headlamp provided by the embodiment of the present application is suitable for scenes with relatively dark light, especially for night scenes.

[0168] Based on this, as shown in FIG. 33, the control method of the vehicle headlamp according to an embodiment of the present application specifically includes the following steps:

[0169] Step S1: When it is determined that the vehicle has a path change intention, acquiring path change information.

[0170] Specifically, the path change intention includes a turning intention and a lane change intention. The turning of the vehicle refers to deviating from the original straight trajectory by the steering wheel or automatic driving control, changing the forward direction, such as left turn, right turn, etc. at the intersection. Lane changing refers to the vehicle driving in the same direction from the current lane into the adjacent lane, such as entering the left lane from the right lane for overtaking, or changing from the straight lane to the left turn lane before the intersection. Whether it is turning or lane changing, it is an operation to change the current driving path, that is, to deviate from the current driving path and enter a new driving path. In the execution process, the road conditions, the surrounding traffic environment and the safety distance are comprehensively considered to ensure that the vehicle drives smoothly and safely on the new path. Further, during the operation of the vehicle, the rotation angle of the steering wheel can be monitored in real time by sensors to determine whether the vehicle has a turning intention or a lane change intention. For example, when the steering wheel starts to rotate from the center position (usually defined as 0°), when the rotation angle reaches a certain degree, it indicates that the driver has a turning or lane changing intention. Further, the driver's line of sight, head or hand movements, etc. can be monitored by cameras, sensors and other devices, and machine learning algorithms can be used to analyze the driver's intention to determine whether the vehicle has a turning intention or a lane change intention.

[0171] Further, when it is determined that the vehicle has a turning intention or a change intention, the rotation angle, rotation rate, etc. of the steering wheel collected by the sensor arranged inside the vehicle in real time can be obtained, and then the path change information of the vehicle is obtained. The path change information includes turning information and lane change information. The turning information includes but is not limited to the turning direction of the vehicle (left turn or right turn), the turning angle of the vehicle, and the lane change information includes but is not limited to the lane change direction of the vehicle (left lane change or right lane change), the lane change angle of the vehicle, etc.

[0172] Step S2: based on the path change information, controlling the projection module to project a projection image for guiding the user to change the path in front of the vehicle driving.

[0173] Specifically, according to the path change information of the vehicle obtained above, the projection module is controlled to project a projection image for guiding the user to change the path in front of the vehicle, wherein the projection image includes, but is not limited to, a turn sign, a lane change sign, a road profile, etc., so that the driver can clearly view the road conditions in front and the obstacles in the blind area in time, and at the same time, the attention of surrounding vehicles, pedestrians and non-motor vehicles is attracted, reminding them to avoid in time, and the traffic safety is improved; thus, the control method of the vehicle headlamp provided by the embodiment of the application can not only solve the problem of insufficient warning effect of the traditional turn signal in the night or poor visibility conditions, but also provide more intuitive and accurate visual assistance for the driver by illuminating the path change section such as the turning section and the lane changing section, which helps to improve the overall sense of technology and intelligence of the vehicle. Specifically, the specific structure and working principle of the vehicle headlamp and the projection module can be referred to the foregoing, which will not be repeated here.

[0174] Therefore, according to the control method of the vehicle headlamp, when the vehicle changes the path, the projection module can be controlled to project a projection image for guiding the user to change the path in front of the vehicle based on the path change information, so that the driver can clearly view the road conditions in front and the obstacles in the blind area in time through the projection image, and at the same time, the projection image can attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time, and improving the traffic safety; thus, the control method of the vehicle headlamp provided by the application can not only solve the problem of insufficient warning effect of the traditional turn signal in the night or poor visibility conditions, but also provide more intuitive and accurate visual assistance for the driver by illuminating the path change section such as the turning section and the lane changing section, which helps to improve the overall sense of technology and intelligence of the vehicle.

[0175] In an embodiment of the application, the path change intention includes a turning intention, and the path change information includes turning information, and based on the path change information, the projection module is controlled to project a projection image for guiding the user to change the path in front of the vehicle, including:

[0176] Based on the turning information, the projection module is controlled to project a projection image for guiding the user to turn in front of the vehicle.

[0177] Specifically, according to the above-obtained steering information of the vehicle, the projection module is controlled to project a projection image for guiding the user to perform a special task in front of the vehicle, wherein the projection image includes but is not limited to a steering sign, a road profile, etc., so as to facilitate the driver to clearly view the road conditions in front and the obstacles in the blind area in time, and at the same time, attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, and remind them to avoid in time, thereby improving the traffic safety; thus, by using the control method of the vehicle headlamp provided in the embodiment of the application, the problem of insufficient warning effect of the traditional steering lamp under the condition of night or poor visibility can be solved, and at the same time, the steering section is illuminated, thereby providing more intuitive and accurate visual assistance for the driver, which is helpful to improve the overall sense of technology and intelligence of the vehicle.

[0178] In an embodiment of the application, the steering information includes a steering direction and a steering amplitude, and based on the steering information, the projection module is controlled to project a projection image for guiding the user to steer in front of the vehicle, including: planning a steering path based on the steering direction and the steering amplitude, and controlling the projection module to project the projection image along the steering path in front of the vehicle.

[0179] In a specific embodiment, the steering information includes a steering direction and a steering amplitude, wherein the current steering direction of the vehicle, i.e., whether the vehicle turns left or right, can be obtained in real time by a steering wheel angle sensor or the like, and the steering amplitude of the vehicle can be determined by the angle or speed of the steering wheel rotation; further, when the projection module is controlled to project the projection image for guiding the user to steer in front of the vehicle, high-precision map data provided by the vehicle navigation system can be used in combination with the surrounding environment information collected in real time by the sensors such as cameras and radars installed on the vehicle, and based on the steering direction and the steering amplitude of the vehicle, specific steering points and steering paths are planned, so as to ensure that the projection image can accurately and timely guide the driver to complete the steering action.

[0180] Specifically, according to the above planning of the steering path based on the steering direction and the steering amplitude, the projection module is controlled to project the projection image along the steering path in front of the vehicle, which can facilitate the driver to clearly view the road conditions in front and the obstacles in the blind area in time, and at the same time, attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, and remind them to avoid in time, thereby improving the traffic safety; thus, by using the control method of the vehicle headlamp provided in the embodiment of the application, the problem of insufficient warning effect of the traditional steering lamp under the condition of night or poor visibility can be solved, and at the same time, the steering section is illuminated, thereby providing more intuitive and accurate visual assistance for the driver, which is helpful to improve the overall sense of technology and intelligence of the vehicle.

[0181] In an embodiment of the present application, the turning path comprises a first turning path for turning left or a second turning path for turning right, and the projection image comprises a first projection image projected along the first turning path or a second projection image projected along the second turning path.

[0182] In a specific embodiment, when the vehicle is turning, a first turning path for turning left or a second turning path for turning right can be planned according to the turning direction and the turning amplitude; correspondingly, the projection module can project a corresponding projection image, i.e., a first projection image or a second projection image, in front of the vehicle according to the planned path to guide the driver to complete the turning action.

[0183] Specifically, according to the first projection image projected along the first turning path and the second projection image projected along the second turning path, the driver can clearly view the road conditions and obstacles in the blind area in front of the vehicle in a timely manner, at the same time, the attention of surrounding vehicles, pedestrians and non-motor vehicles is attracted, and they are reminded to avoid in time, thereby improving the traffic safety; thus, by using the control method of the vehicle headlamp provided in the embodiments of the present application, the problem of insufficient warning effect of the traditional turning light under night or poor visibility conditions can be solved, and the driver is provided with more intuitive and accurate visual assistance by illuminating the turning path, which helps to improve the overall sense of technology and intelligence of the vehicle.

[0184] In an embodiment of the present application, the projection image comprises a projection light beam covering the turning path and completely matching the turning path.

[0185] In a specific embodiment, the shape of the projection image should match the shape of the planned turning path, i.e., the size (including length and width) of the projection light beam can be adjusted according to the specific size of the turning path to ensure that the length of the projection light beam is long enough, and the width of the projection light beam should match the width of the turning path. For example, if the turning path is a smooth arc, the projection light beam should also be a corresponding arc-shaped light beam, and if the planned turning path is to turn left, the left-curved light beam is projected, and if the planned turning path is to turn right, the right-curved light beam is projected, to ensure that the projection light beam can accurately cover and guide the entire turning process of the vehicle.

[0186] Specifically, according to the projection light beam matching the turning path and covering the turning path, the driver can clearly view the road conditions and obstacles in the blind area in front of the vehicle in time, and the projection light beam can attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improving traffic safety. Therefore, the control method of the vehicle headlamp provided by the embodiment of the present application can not only solve the problem of insufficient warning effect of the traditional turning light in the night or poor visibility conditions, but also provide more intuitive and accurate visual assistance for the driver by illuminating the turning path, which helps to improve the overall sense of technology and intelligence of the vehicle.

[0187] In an embodiment of the present application, the projection image includes two projection lines, and the two projection lines respectively correspond to the two side edges of the turning path. In a specific embodiment, as the vehicle travels and turns, 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, so as to ensure that the projection lines always correspond to and are accurately aligned with the two side edges of the turning path, i.e., the two projection lines respectively correspond to the two side edges of the turning path. Specifically, by matching the two projection lines with the two side edges of the turning path respectively, the driver can be provided with clear turning path guidance, so that the driver can intuitively see the driving route to be followed, helping the driver to better identify the road boundary and turning point, providing more intuitive and accurate visual assistance for the driver, thereby improving driving safety and the overall sense of technology and intelligence of the vehicle.

[0188] In an embodiment of the present application, the path change intention includes a lane change intention, and the path change information includes lane change information. Based on the path change information, the projection module is controlled to project a projection image for guiding the user to change the path in front of the vehicle, which includes:

[0189] Based on the lane change information, the projection module is controlled to project a projection image for guiding the user to change the lane in front of the vehicle.

[0190] Specifically, according to the lane change information of the vehicle obtained, the projection module is controlled to project a projection image for guiding the user to change the lane in front of the vehicle, wherein the projection image includes but is not limited to a lane change sign, a road contour, etc., so that the driver can clearly view the road conditions and obstacles in the blind area in front of the vehicle in time, and 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, the control method of the vehicle headlamp provided by the present application can not only solve the problem of insufficient warning effect of the traditional turning light in the night or poor visibility conditions, but also provide more intuitive and accurate visual assistance for the driver by illuminating the turning path, which helps to improve the overall sense of technology and intelligence of the vehicle.

[0191] In one embodiment of the present application, the lane changing information comprises a lane changing direction, and based on the lane changing information, the control of the projection module to project the projection image for guiding the user to change lanes in front of the vehicle driving comprises: 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 driving. In a specific embodiment, the lane changing information comprises a lane changing direction, for example, the current lane changing direction of the vehicle, i.e. whether the vehicle changes lanes to the left or to the right, can be obtained in real time through a steering wheel angle sensor or other devices. Further, when controlling the projection module to project the projection image for guiding the user to change lanes in front of the vehicle driving, high-precision map data provided by the vehicle navigation system can be used in combination with surrounding environment information collected in real time by sensors such as cameras and radars installed on the vehicle, and a specific lane changing path can be planned based on the lane changing direction of the vehicle, so as to ensure that the projection image can accurately and timely guide the driver to complete the lane changing action.

[0192] Specifically, according to the above-mentioned control of the projection module to project the projection image along the lane changing path in front of the vehicle driving based on the lane changing direction to plan the lane changing path, the driver can conveniently and clearly view the road conditions in front and obstacles in the blind area in time, and 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 the traffic safety. Thus, by using the control method of the vehicle headlamp provided by the present application, the problem of insufficient warning effect of the traditional turn signal under night or poor visibility conditions can be solved, and at the same time, by illuminating the lane changing section, more intuitive and accurate visual assistance is provided for the driver, which helps to improve the overall sense of technology and intelligence of the vehicle.

[0193] In one embodiment of the present application, the lane changing path comprises a first lane changing path for changing lanes to the left or a second lane changing path for changing lanes to the right, and the projection image comprises a first projection image projected along the first lane changing path and a second projection image projected along the second lane changing path.

[0194] In specific embodiments, when the vehicle is changing lanes, a first lane-changing path for changing lanes to the left or a second lane-changing path for changing lanes to the right can be planned according to the lane-changing direction; correspondingly, the projection module can project a corresponding projection image in front of the vehicle according to the planned path, i.e., a first projection image projected along the first lane-changing path and a second projection image projected along the second lane-changing path, to guide the driver to complete the lane-changing action. Specifically, according to the first projection image projected along the first lane-changing path and the second projection image projected along the second lane-changing path, the driver can clearly view the obstacles in the front road condition and the blind area in time, and at the same time, the projection image can attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improve traffic safety. Thus, the control method of the vehicle headlamp provided by the present application can not only solve the problem of insufficient warning effect of the traditional turn signal under night or poor visibility conditions, but also provide more intuitive and accurate visual assistance for the driver by illuminating the lane-changing section, which helps to improve the overall sense of technology and intelligence of the vehicle.

[0195] In an embodiment of the present application, the projection image includes a projection light beam covering and completely matching the lane-changing path.

[0196] In specific embodiments, the shape of the projection image should cover the planned lane-changing path and completely match the shape of the lane-changing path, i.e., the size (including length and width) of the projection light beam can be adjusted according to the specific size of the lane-changing path to ensure that the length of the projection light beam is long enough, and the width of the projection light 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 left-curved light beam is projected, and if the planned lane-changing path is to change lanes to the right, a right-curved light beam is projected to ensure that the projection light beam can accurately cover and guide the entire lane-changing process of the vehicle.

[0197] Specifically, according to the projection light beam covering and completely matching the lane-changing path, the driver can clearly view the obstacles in the front road condition and the blind area in time, and at the same time, the projection image can attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time and improve traffic safety; thus, the control method of the vehicle headlamp provided by the present application can not only solve the problem of insufficient warning effect of the traditional turn signal under night or poor visibility conditions, but also provide more intuitive and accurate visual assistance for the driver by illuminating the lane-changing section, which helps to improve the overall sense of technology and intelligence of the vehicle.

[0198] In an embodiment of the present application, the projected image comprises two projected line strips, which are respectively one-to-one matched with the two side edges of the lane-changing path. In specific embodiments, as the vehicle travels and changes lanes, the control module can dynamically adjust the position and shape of the projected line strips in the projected image emitted by the projection module according to real-time data, so as to ensure that the projected line strips are always one-to-one matched and accurately aligned with the two side edges of the lane-changing path, i.e., the two projected line strips are respectively one-to-one matched with the two side edges of the lane-changing path. Specifically, by matching the two projected line strips with the two side edges of the lane-changing path respectively one-to-one, clear lane-changing path guidance can be provided for the driver, so that the driver can intuitively see the driving route to be followed, helping the driver to better identify the road boundary and the lane-changing point, providing the driver with more intuitive and accurate visual assistance, thereby improving driving safety and the overall sense of technology and intelligence of the vehicle.

[0199] In an embodiment of the present application, the projection light beam is a monochromatic projection light beam. In specific embodiments, the projection light beam is a monochromatic projection light beam, i.e., the projection light beam is composed of a single color of light throughout the projection process, and there is no color change or mixing. Specifically, when the projection module is projecting, since the monochromatic projection light beam has a single color, the brightness is generally stable and will not fluctuate 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, does not require the use of multiple color channels (usually red, green, and blue three primary colors) for color synthesis, i.e., does not require a complex color management and correction system, thereby reducing the manufacturing cost of the equipment and reducing the difficulty and cost of maintenance.

[0200] In an embodiment of the present application, the single-color projection light beam is a white projection light beam. In specific embodiments, the single-color projection light beam is a white projection light beam, i.e., the light beam emitted by the projection module is composed of white light, and the white light has high brightness and good visibility. Specifically, the white light is usually composed of multiple colors, and has higher brightness than other single-color light and is more easily seen under various conditions. Moreover, the white light has good visibility in the daytime and at night, and does not significantly decrease in effect due to changes in ambient light, and is easily recognized by drivers and other road users. Thus, by setting the single-color projection light beam as a white projection light beam, when the vehicle is changing path, such as turning or changing lanes, the driver can clearly and timely view the road conditions and obstacles in the blind area in front of the vehicle, and at the same time, the attention of surrounding vehicles, pedestrians and non-motor vehicles is attracted, prompting them to avoid in time, thereby improving traffic safety. Thus, by using the control method of the vehicle headlamp provided in the embodiments of the present application, the problem of insufficient warning effect of the traditional turn signal in the nighttime or poor visibility conditions can be solved, and by illuminating the path-changing section, such as the turning section or the lane-changing section, a more intuitive and accurate visual aid is provided for the driver, which helps to improve the overall sense of technology and intelligence of the vehicle.

[0201] In an embodiment of the present application, 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 path-changing intention. Specifically, when the driver is preparing to turn during the driving of the vehicle, 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 path, such as a turning intention or a lane-changing intention. Similarly, during the driving of the vehicle, the angle change of the steering wheel can be continuously monitored and compared with the 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 path, such as a turning intention or a lane-changing intention. In specific embodiments, the preset angle can be set according to actual conditions.

[0202] In an embodiment of the present application, when the turn signal of the vehicle is triggered and the steering wheel angle of the vehicle is greater than a first preset angle, it is determined that the vehicle has a turning intention. Specifically, the preset angle includes the first preset angle. When the driver is preparing to turn during the driving of the vehicle, the corresponding turn signal will be turned on in advance. During the driving of the vehicle, the angle change of the steering wheel can be continuously monitored and compared with the first preset angle. When the turn signal of the vehicle is triggered and the steering wheel angle of the vehicle is greater than the first preset angle, it can also be determined that the driver has a clear turning intention. In specific embodiments, the first preset angle can be set according to actual conditions.

[0203] In one embodiment of the present application, when the turn signal of the vehicle is triggered and the steering wheel angle of the vehicle is greater than a second preset angle, it is determined that the vehicle has a lane changing intention. Specifically, the preset angle includes the second preset angle. When the driver prepares to change lanes during the driving of the vehicle, the corresponding turn signal will be turned on in advance. At the same time, the change of the steering wheel angle during the driving of the vehicle can be continuously monitored and compared with the second preset angle. When the steering wheel angle of the vehicle is greater than the second preset angle, it can also be determined that the driver has a clear lane changing intention. In specific embodiments, the second preset angle can be set according to actual conditions.

[0204] In one embodiment of the present application, whether the vehicle has a turning intention is determined based on the road marking of the current lane of the vehicle.

[0205] Specifically, the road marking of the current lane of the vehicle can be recognized by a camera or other image sensor on the vehicle, including but not limited to lane lines, turning signs, etc., so as to predict the future driving path of the vehicle according to the recognized road marking, and further determine whether the vehicle has a turning intention. For example, if a turning sign or a lane line is recognized in front of the current lane of the vehicle, it can be determined that the vehicle has a turning intention.

[0206] In one embodiment of the present application, the vehicle headlamp includes a light source module and a lens assembly. The light source module has an illumination mode and a projection mode. The light source module can project an image when in the projection mode. The illumination module is used to make the vehicle headlamp in the illumination mode, and the projection module is used to make the vehicle headlamp in the projection mode. The lens assembly includes a lens structure, and the lens structure includes a plurality of lenses. The common axis of the lenses is a first optical axis. The center of the light source module is arranged offset from the first optical axis, so that the corresponding emission field of view of the light source module is deflected relative to the first optical axis, and the projected image falls on the ground in front of the vehicle.

[0207] Specifically, referring to FIGS. 2 and 3, the headlamp 10 includes a light source module 200 and a lens assembly 100. The light source module 200 has an illumination mode and a projection mode. The light source module 200 can project an image when in the projection mode. The lens assembly 100 is arranged on the light exit side of the light source module 200 to receive and diverge the light rays emitted by the light source module 200.

[0208] Referring to FIGS. 17-21, the lens assembly 100 includes a lens structure 110 and a support structure 120; the lens structure 110 includes a lens barrel 114 and a second connecting member 115 fixed to the lens barrel 114; 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, in order from the imaging side to the light source side along a first optical axis 102, a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4, 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 order to reach the imaging side of the lens assembly 100, each lens 101 in the lens structure 110 is coaxially arranged, 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.

[0209] Referring to FIG. 35, the light source module 200 is arranged with its center offset from the first optical axis 102, so that the corresponding emission field of view 700 of the light source module 200 is deflected relative to the first optical axis 102. In this way, when the headlamp 10 is installed on the vehicle 20, the center of the light source module 200 is offset from the first optical axis 102, which is beneficial to make the projected image or image, such as the arrow indicating projection image 30 shown in FIG. 35, fall on the ground in front of the vehicle 20.

[0210] Further, the projection module 900 includes a first device group 210 including a plurality of light emitting devices 201, and the illumination module 800 includes a second device group 220 including a plurality of light emitting devices 201.

[0211] In some embodiments, the light emitting devices 201 in the first device group 210 are used for both projection and illumination, and the light emitting devices 201 in the second device group 220 are only used for illumination. In some cases, when the light source module 200 is in the illumination mode, the light emitting devices 201 in the first device group 210 and the second device group 220 are all emitting light, thereby maximizing the illumination brightness. In the projection mode, only the light emitting devices 201 in the first device group 210 emit light, so that when the light emitting devices 201 in the first device group 210 are distributed in a specific pattern, the projected light can form an image in a specific pattern. It can be understood that in the projection mode, the light emitting devices 201 in the second device group 220 do not emit light in the manner of the embodiments of the present application, which makes the illumination range smaller in the mode, and therefore, the projection is suitable for the vehicle in the parked state.

[0212] In other embodiments, in the illumination mode, all light emitting devices 201 in the first device group 210 emit light, all light emitting devices 201 in the second device group 220 emit light, and the light emitting intensity of the light emitting devices 201 in the first device group 210 is equal to the light emitting intensity of the light emitting devices 201 in the second device group 220. In the projection mode, all light emitting devices 201 in the first device emit light, all light emitting devices 201 in the second device emit light, and the light emitting intensity of the light emitting devices 201 in the first device group 210 is greater than the light emitting intensity of the light emitting devices 201 in the second device group 220. In this example, unlike the foregoing embodiments, in the projection mode, the light emitting devices 201 in the first device group 210 and the second device group 220 all emit light, but the light emitting intensity of the two groups of light emitting devices 201 is different, that is, the light emitting intensity of the light emitting devices 201 in the first device group 210 is greater, so that the light emitting devices 201 in the second device group 220 can also provide illumination while forming the projection image. This mode can be used for projection when the vehicle is in a parking state, and can also be used for projection when the vehicle is in a driving state. In summary, according to the control method of the vehicle headlamp provided in the embodiments of the present application, when the vehicle changes path, such as steering or lane changing, the projection module can project a projection image for guiding the user to change the path based on the path change information. The driver can clearly see the road conditions and obstacles in the blind area in front of the vehicle in time through the projection image, and at the same time, the projection image can attract the attention of surrounding vehicles, pedestrians and non-motor vehicles, reminding them to avoid in time, thereby improving traffic safety. Therefore, by using the control method of the vehicle headlamp provided in the present application, the problem of insufficient warning effect of the traditional turn signal lamp in the night or poor visibility conditions can be solved, and at the same time, the driver is provided with more intuitive and accurate visual assistance by illuminating the path change section, such as the steering section or the lane changing section, which helps to improve the overall sense of technology and intelligence of the vehicle.

[0213] Further embodiments of the present application also disclose a control device 1000 of a vehicle headlamp, as described above, the vehicle headlamp comprises an illumination module for illumination and a projection module for projection, wherein the illumination module is used to make the vehicle headlamp in the illumination mode as described above, and the projection module is used to make the vehicle headlamp in the projection mode as described above. It is understood that the vehicle headlamp provided in the embodiments of the present application is suitable for scenes with relatively dark light, and is particularly suitable for night scenes.

[0214] FIG. 36 is a structural block diagram of a control device of a vehicle headlamp according to an embodiment of the present application. As shown in FIG. 36, the control device 1000 of the vehicle headlamp comprises an acquisition module 1001 and a control module 1002.

[0215] Specifically, the acquisition module 1001 is configured to acquire path change information when the vehicle has a path change intention.

[0216] The control module 1002 is configured to control the projection module to project the projection image for guiding the user to change the path based on the path change information.

[0217] In an embodiment of the present application, the path change intention includes a turning intention, and the path change information includes turning information. When the control module 1002 controls the projection module to project the projection image for guiding the user to change the path based on the path change information, the control module 1002 is specifically configured to control the projection module to project the projection image for guiding the user to turn based on the turning information.

[0218] In an embodiment of the present application, the turning information includes a turning direction and a turning amplitude. When the control module 1002 controls the projection module to project the projection image for guiding the user to turn based on the turning information, the control module 1002 is specifically configured to plan a turning path based on the turning direction and the turning amplitude, and control the projection module to project the projection image along the turning path in front of the vehicle.

[0219] In an embodiment of the present application, the path change intention includes a lane changing intention, and the path change information includes lane changing information. When the control module 1002 controls the projection module to project the projection image for guiding the user to change the path based on the path change information, the control module 1002 is specifically configured to control the projection module to project the projection image for guiding the user to change lanes based on the lane changing information.

[0220] It should be noted that the control device 1000 of the vehicle headlamp in the embodiments of the present application is similar to the specific implementation manners of the control method of the vehicle headlamp described in any of the above embodiments when controlling the vehicle headlamp, and specific descriptions can be made with reference to the descriptions in the method part. In order to reduce redundancy, the descriptions are not repeated here.

[0221] The device in the above embodiments is used to implement the control method of the vehicle headlamp in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0222] A further embodiment of the present application also discloses a vehicle.

[0223] In some embodiments, the vehicle includes the control device 1000 of the vehicle headlamp as described in any of the above embodiments of the present application.

[0224] In some embodiments, the vehicle includes a processor, a memory, and a control program of the vehicle headlamp stored in the memory and executable on the processor. The control program of the vehicle headlamp is executed by the processor to implement the control method of the vehicle headlamp as described in any of the above embodiments of the present application.

[0225] In specific embodiments, the vehicle can be any one of a pure electric vehicle, a fuel vehicle or a hybrid vehicle.

[0226] The control program of the vehicle headlamp run by the processor of the vehicle of the above embodiments implements the control method of the vehicle headlamp as described in any one of the above embodiments of the present application, and has the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0227] A further embodiment of the present application also discloses a computer readable storage medium, and the control program of the vehicle headlamp is stored on the computer readable storage medium, and the control program of the vehicle headlamp, when executed by a processor, implements the control method of the vehicle headlamp as described in any one of the above embodiments of the present application.

[0228] The control program of the vehicle headlamp stored on the storage medium of the above embodiments, when executed by a processor, is used to implement the control method of the vehicle headlamp of any one of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0229] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A control method of a vehicle headlamp, wherein, The vehicle headlamp comprises an illumination module for illumination and a projection module for projection, and a control method of the vehicle headlamp comprises: When it is determined that the vehicle has a path change intention, path change information is acquired; Based on the path change information, the projection module is controlled to project a projection image for guiding the user to change the path in front of the vehicle driving.

2. The control method of a vehicle headlamp according to claim 1, wherein The path change intention comprises a turning intention, and the path change information comprises turning information, and the control of the projection module to project the projection image for guiding the user to change the path in front of the vehicle driving based on the path change information comprises: Based on the turning information, the projection module is controlled to project a projection image for guiding the user to turn in front of the vehicle driving.

3. The control method of a vehicle headlamp according to claim 2, wherein The turning information comprises a turning direction and a turning amplitude, and the control of the projection module to project the projection image for guiding the user to turn in front of the vehicle driving based on the turning information comprises: A turning path is planned based on the turning direction and the turning amplitude, and the projection module is controlled to project the projection image along the turning path in front of the vehicle driving.

4. The control method of a vehicle headlamp according to claim 3, wherein The turning path comprises a first turning path for turning left or a second turning path for turning right, and the projection image comprises a first projection image projected along the first turning path or a second projection image projected along the second turning path.

5. The control method of a vehicle headlamp according to claim 3, wherein The projection image comprises a projection light beam covering the turning path and completely matching the turning path.

6. The control method of a vehicle headlamp according to claim 3, wherein The projection image comprises two projection line bars, and the two projection line bars respectively one-to-one correspond to the two side edges of the turning path.

7. The control method of a vehicle headlamp according to claim 1, wherein The path change intention comprises a lane change intention, and the path change information comprises lane change information, and the control of the projection module to project the projection image for guiding the user to change the path in front of the vehicle driving based on the path change information comprises: 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 driving.

8. The control method of a vehicle headlamp according to claim 7, wherein The lane change information comprises a lane change direction, and the control of the projection module to project the projection image for guiding the user to change lanes in front of the vehicle driving based on the lane change information comprises: A lane change path is planned based on the lane change direction, and the projection module is controlled to project the projection image along the lane change path in front of the vehicle driving.

9. The control method of a vehicle headlamp according to claim 8, wherein The lane change path comprises a first lane change path for changing lanes left or a second lane change path for changing lanes right, and the projection image comprises a first projection image projected along the first lane change path or a second projection image projected along the second lane change path.

10. The control method of a vehicle headlamp according to claim 8, wherein The projection image comprises a projection light beam covering the lane change path and completely matching the lane change path.

11. The control method of a vehicle headlamp according to claim 8, wherein The projection image comprises two projection line bars, and the two projection line bars respectively one-to-one correspond to the two side edges of the lane change path.

12. The control method of a vehicle headlamp according to claim 1, wherein 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 path change intention.

13. The control method of a vehicle headlamp according to claim 1, wherein The path change intention comprises a turning intention, and whether the vehicle has a turning intention is determined based on the road identification of the current lane of the vehicle.

14. The control method of a vehicle headlamp according to claim 1, wherein The vehicle headlamp comprises a light source module and a lens assembly, the light source module has an illumination mode and a projection mode, the light source module can project an image when in the projection mode, the illumination module is used to make the vehicle headlamp in the illumination mode, and the projection module is used to make the vehicle headlamp in the projection mode; The lens assembly comprises a lens structure, the lens structure comprises a plurality of lenses, and the common axis of each lens is a first optical axis; The light source module is arranged to deviate from the first optical axis, so that the corresponding emission field of view of the light source module is deflected relative to the first optical axis, and the projected image falls on the ground in front of the vehicle.

15. A vehicle, wherein, Comprise: A processor, a memory, and a vehicle headlamp control program stored on the memory and executable on the processor, the vehicle headlamp control program, when executed by the processor, implements the vehicle headlamp control method of any one of claims 1-14.

Images