Lighting device and motor vehicle

Abstract

The invention provides a lighting device and a motor vehicle, the lighting device comprises a light source assembly, and the light source assembly is used for emitting light; the front lens is arranged on the front side of the light source assembly and used for emitting light rays emitted by the light source assembly towards the front side of the front lens; the heating film is arranged on the rear side of the front lens and the front side of the light source assembly; wherein the heating film comprises a film sheet and a heating assembly formed on the film sheet, the heating assembly is used for generating heat to heat the front lens, the heating assembly comprises a first heating structure, and a hollow structure is formed in the first heating structure.

Description

Technical Field

[0001] The present application relates to the technical field of lighting devices, and more particularly, to a luminous and radar-compatible lighting device and a motor vehicle. Background Art

[0002] In the technical field of lighting devices, various lighting or signaling devices are known for providing lighting or signaling light. For example, headlights are used in motor vehicles to provide lighting or signaling functions to ensure safe driving or provide decorative functions. However, in cold weather, when the surface of the headlights is covered with ice, the functions of the headlights cannot be effectively used.

[0003] Therefore, how to propose a lighting device that can satisfy customers' demands for styling while taking into account the normal use of its functions is a technical problem that urgently needs to be solved. Summary of the invention

[0004] An object of the present application is to overcome at least one of the problems and drawbacks in the prior art.

[0005] A first aspect of the present application provides a lighting device, comprising:

[0006] A light source assembly, the light source assembly is used to emit light;

[0007] a front lens, the front lens being disposed at the front side of the light source assembly and being used to direct the light emitted by the light source assembly toward the front side of the front lens; and

[0008] A heating film, the heating film being arranged on the rear side of the front lens and the front side of the light source assembly;

[0009] Wherein, the heating film includes a diaphragm and a heating component formed on the diaphragm, the heating component is used to generate heat to heat the front lens, and the heating component includes a first heating structure, and the first heating structure is formed with a hollow structure.

[0010] In some embodiments, the lighting device further comprises a logo structure;

[0011] The marking structure is arranged on the rear side or the front side of the heating film, or the marking structure is arranged on the rear side of the outer lens.

[0012] In some embodiments, the logo structure is configured to be transparent, and when the light source assembly emits light, the light emitted by the light source assembly illuminates the logo structure.

[0013] In some embodiments, the front lens includes a first region, the first heating structure is located in the first region at least partially in an orthographic projection of the front lens, and the first heating structure is used to heat the first region of the front lens;

[0014] The lighting device includes a shell, the front lens is installed on the shell, and a radar mounting structure is provided on the shell. The radar mounting structure is used to install a radar detection device on the rear side of the lighting device. When the radar detection device is installed on the lighting device, the signal window of the radar detection device is located in the first area at the orthographic projection of the front lens.

[0015] In some embodiments, the first heating structure completely covers the first area in the minimum envelope circle of the orthographic projection of the front lens, and the first heating structure enables the signal window of the radar detection device to normally receive and send radar signals by forming the hollow structure.

[0016] In some embodiments, the first heating structure is in a grid shape, the width of the heating wires of the first heating structure is between 2 and 30 um, and the width of each grid formed by the first heating structure is between 50-1000 um and the height is between 1000-4000 um; or

[0017] The first heating structure is in the shape of strips spaced apart from each other, the width of the heating wires of the first heating structure is less than 5 mm, and the width of the hollow structure between adjacent heating wires is less than 10 mm.

[0018] In some embodiments, the heating wire of the first heating structure comprises at least one of silver nanowires, micro-copper wires, micro-alloy wires, carbon nanotubes, and nanowires.

[0019] In some embodiments, the orthographic projection of the marking structure on the front lens and the orthographic projection of the first heating structure on the front lens include an overlapping portion, and the first heating structure is transparent.

[0020] In some embodiments, the lighting device further comprises an inner lens and a heat sink;

[0021] The light source assembly is mounted on the heat sink, and the inner lens is used to receive and transmit the light emitted by the light source assembly, so that the light is emitted from the front lens.

[0022] In some embodiments, the front lens and the heating film are formed as a single piece.

[0023] In some embodiments, the lighting device further includes a rear lens, the heating film is disposed between the front lens and the rear lens, and the front lens, the heating film and the rear lens are formed as an integral part;

[0024] In some embodiments, the rear side of the rear lens is provided with a white paint layer and a black paint layer.

[0025] In some embodiments, the lighting device further comprises a protective layer, the protective layer being coated on the front side of the front lens, the protective layer comprising an anti-UV material.

[0026] In some embodiments, the heating assembly further comprises a second heating structure, wherein the second heating structure is transparent;

[0027] The front lens further comprises a second region, the second heating structure is located in the second region at least partially in the orthographic projection of the front lens, and the second heating structure is used to heat the second region of the front lens;

[0028] The housing is provided with a camera mounting structure, and the camera mounting structure is used to mount a camera on the rear side of the lighting device. When the camera is mounted on the lighting device, the orthographic projection of the camera lens on the front lens is located within the second area.

[0029] A second aspect of the present application provides a motor vehicle, which includes a lighting device as provided in the first aspect and the above-mentioned embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the three-dimensional structure of the lighting device according to the first embodiment of the present application at a first viewing angle;

[0031] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the lighting device in the middle under a second viewing angle;

[0032] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the lighting device;

[0033] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure of the lighting device;

[0034] Figure 5 for Figure 1 A partial structural schematic diagram of the lighting device in FIG. 1 shows a heating film and a first area and a second area of ​​a front lens;

[0035] Figure 6 for Figure 5 The equivalent circuit schematic diagram of the heating component of the light-emitting component;

[0036] Figure 7 is a schematic diagram of the three-dimensional structure of the lighting device according to the second embodiment of the present application at a first viewing angle;

[0037] Figure 8 for Figure 7 A schematic diagram of the three-dimensional structure of the lighting device in the middle under a second viewing angle;

[0038] Fig. 9 for Figure 7 A schematic diagram of the cross-sectional structure of the lighting device;

[0039] Fig.10 for Figure 7 Schematic diagram of the exploded structure of the lighting device;

[0040] Fig.11 for Figure 7 A schematic diagram of a part of the structure of the lighting device;

[0041] in:

[0042] 100 - lighting fixtures,

[0043] 110-front lens, 111-first area, 112-second area,

[0044] 120-heating film, 12a-film, 12b-heating component, 12c-camera shooting area, 12d-marking structure, 12d1-first marking structure, 12d2-second marking structure,

[0045] 121-first heating structure, 121a-hollow structure,

[0046] 122-second heating structure, 123-third heating structure,

[0047] V1-first electrode, V2-second electrode, Vm-middle electrode, GND-reference electrode

[0048] 130-housing, 131-radar mounting structure, 132-camera mounting structure,

[0049] 20-radar bracket, 30-camera bracket, 40-screws,

[0050] 140-light source assembly, 150-inner lens, 160-heat sink,

[0051] 170-rear lens, 170a-through hole, 180-shading ring,

[0052] 191- white paint layer, 192- black paint layer, 193- protective layer,

[0053] 200- radar detection device, 210- signal window,

[0054] 300-camera, 310-lens, D-front direction. DETAILED DESCRIPTION

[0055] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that the embodiments of the present application are mainly for illustrating possible implementation methods of the technical solution of the present application and should not be understood as limiting the technical solution of the present application. In this specification, the same or similar parts are indicated by the same or similar reference numerals.

[0056] Currently, more and more motor vehicles are using cameras and radar detection devices (such as millimeter wave radar or laser radar) for advanced driver assistance systems (ADAS). One feasible solution is to integrate cameras and radar detection devices into the headlights, but in cold weather, when the surface of the headlights is covered with ice, the functions of the cameras and radar detection devices will be disturbed. In this case, it is necessary to install heaters for deicing the cameras and radar detection devices. The heaters known to the applicant mostly use metal wires for heating and deicing, but these heaters often affect the shape of the headlights and even affect the normal use functions of the cameras and radar detection devices.

[0057] Therefore, the embodiments of the present application provide a lighting device that can satisfy the customer's demand for styling while taking into account the normal use of the radar detection device.

[0058] Figure 1 1 is a schematic diagram of the three-dimensional structure of the lighting device 100 according to the first embodiment of the present application at a first viewing angle. Figure 2 for Figure 1 FIG. 1 is a schematic diagram of the three-dimensional structure of the lighting device 100 at a second viewing angle. Figure 3 for Figure 1 The exploded structural diagram of the lighting device 100 is also shown, and the radar detection device 200 and the camera 300 are also shown. Figure 4 for Figure 1 The cross-sectional structural diagram of the lighting device 100 also shows the radar detection device 200 and the camera 300. Figure 5 for Figure 1 A partial structural schematic diagram of the lighting device 100 in FIG. 1 shows the heating film 120 and the first area 111 and the second area 112 of the front lens 110 . Figure 6 for Figure 5 Schematic diagram of the equivalent circuit of the heating component of the light-emitting component.

[0059] like Figure 1-Figure 5As shown, the first embodiment of the present application proposes a lighting device 100, which includes a light source assembly 140, a front lens 110 and a heating film 120. The light source assembly 140 may include a circuit board and a light-emitting element arranged on the circuit board, the light-emitting element is, for example, an LED, and the light source assembly 140 is used to emit light; the front lens 110 is arranged on the front side of the light source assembly 140, and is used to emit the light emitted by the light source assembly 140 toward the front side of the front lens 110; the heating film 120 is arranged on the rear side of the front lens 110 and the front side of the light source assembly 140, that is, the heating film 120 is arranged between the front lens 110 and the light source assembly 140. Among them, the heating film 120 includes a diaphragm 12a and a heating assembly 12b formed on the diaphragm 12a, the heating assembly 12b is used to generate heat to heat the front lens 110, and the heating assembly 12b includes a first heating structure 121, and the first heating structure 121 is formed with a hollow structure 121a.

[0060] In this embodiment, the lighting device 100 includes a light source assembly 140, which can emit light, so that the entire lighting device 100 is luminous, and the shape is very eye-catching, which improves driving safety. In addition, the heating film 120 is arranged on the rear side of the front lens 110, and the heating film 120 can be heated by power, and the heat generated by the heating can remove the ice formed on the front side of the front lens 110; when the radar detection device 200 is integrated on the rear side of the lighting device 100, the ice on the front side of the front lens 110 is removed, thereby avoiding the ice on the front side of the front lens 110 in cold weather from interfering with the function of the radar detection device 200. Finally, the first heating structure 121 is formed with a hollow structure 121a, where the hollow structure 121a refers to the space not covered by the first heating structure 121. By setting the first heating structure 121, the hollow structure 121a is formed, so that when the radar detection device 200 is integrated on the rear side of the lighting device 100, the radar signal of the radar detection device 200 can be normally transmitted through the hollow structure 121a, so that the signal window 210 of the radar detection device 200 can normally receive and send radar signals without being affected by the first heating structure 121. On the contrary, if the hollow structure 121a is not set, the entire first heating structure 121 is a complete plate-like structure, and the first heating structure 121 will seriously affect the transmission of the radar signal. In this embodiment, the front side refers to the side along the Figure 3 The front direction D shown is close to the front side, such as Figure 3 The left side of the perspective, the rear side refers to the side behind along the front direction D, such as Figure 3 When the lighting device 100 is installed on a motor vehicle, the front direction D is approximately or exactly toward the front of the motor vehicle.

[0061] In this embodiment, the heating assembly 12b may further include a second heating structure 122, which is transparent. The heating film 120 is disposed on the rear side of the front lens 110, and the heating film 120 can be heated by power supply, and the heat generated by the heating can remove the ice formed on the front side of the front lens 110; when the camera 300 is integrated on the rear side of the lighting device 100, the ice on the front side of the front lens 110 is removed, thereby preventing the ice on the front side of the front lens 110 from interfering with the function of the camera 300 in cold weather. In addition, by setting the second heating structure 122 to be optically transparent, when the camera 300 is integrated on the rear side of the lighting device 100, the lens 310 of the camera 300 can normally shoot images or videos through the transparent second heating structure 122 without being affected by the second heating structure 122.

[0062] The lighting device 100 can be used as a logo lamp that can emit light. Specifically, the lighting device 100 may also include a logo structure 12d, which is disposed on the film 12a of the heating film 120. For example, the logo structure 12d is disposed on the rear side or the front side of the heating film 120. In other embodiments, the logo structure 12d may also be disposed on the rear side of the outer lens 110. The present application does not specifically limit the position of the logo structure 12d, as long as the logo structure 12d can be presented on the outside of the outer lens. The logo structure 12d is set to be transparent. When the light source assembly 140 of the lighting device 100 emits light, the light emitted by the light source assembly 140 will illuminate the logo structure 12d. The logo structure 12d may include a first logo structure 12d1 and a second logo structure 12d2, for example, the first logo 12d1 presents a "V" shape as shown in the figure, and the second logo 12d2 presents a closed circle as shown in the figure. In other embodiments, the sign structure 12d may also be in other shapes, and the lighting device 100 may also be used as a lighting lamp or a signal lamp with other functions.

[0063] In order to set a transparent camera shooting area 12c and a marking structure 12d, the diaphragm 12a can be set to be transparent, and opaque ink is applied to the area outside the camera shooting area 12c and the marking structure 12d, so that the ink area of ​​the diaphragm 12a is opaque, while the camera shooting area 12c and the marking structure 12d are transparent.

[0064] In this embodiment, the orthographic projection of the marking structure 12d on the front lens 110 and the orthographic projection of the first heating structure 121 on the front lens 110 include an overlapping portion. In order to avoid the first heating structure 121 from blocking the marking structure 12d, the first heating structure 121 can be set to be transparent, so that the heating function of the first heating structure 121 and the marking function of the marking structure 12d can be used normally without interfering with each other.

[0065] In this embodiment, the orthographic projection of the first marking structure 12d1 on the front lens and the orthographic projection of the first heating structure 121 on the front lens include an overlapping portion. The orthographic projection of the second marking structure 12d2 on the front lens and the orthographic projection of the heating component on the front lens include an overlapping portion, and the heating components corresponding to the overlapping portion are all transparent. For example, the first heating structure 121, the second heating structure 122, and the third heating structure 123 that overlap with the second marking structure 12d2 are all transparent to prevent the heating component 12b from affecting the function of the second marking structure 12d2.

[0066] In this embodiment, the diaphragm 12a can be made of PC material, PET material, a mixed material of PET and PC or other suitable non-metallic materials, which are not listed here. These non-metallic materials will not interfere with the radar signal, so the function of the radar detection device 200 is not affected by the diaphragm 12a. Figure 3 As shown, at least the camera shooting area 12c corresponding to the camera lens on the film 12a can be set to be transparent, so that the setting of the film 12a does not affect the camera function. In addition, the entire heating film 120 can achieve the heating and deicing function without affecting the normal use of the radar detection device 200 and the camera 300. Since the transparent camera shooting area 12c does not affect the camera function, it is not necessary to open an avoidance hole on the front lens 110, that is, the front lens 110 is set to a complete solid structure to reduce the pollution of external dust and other pollution sources to the internal components of the lighting device 100.

[0067] In some embodiments, the entire film 12a may be set to be transparent, and the first heating structure 121 may also be set to be transparent, so that the first heating structure 121 and the second heating structure 122 are transparent and invisible from the outside, and will not affect the overall appearance of the lighting device 100. In other embodiments, the first heating structure 121 may also be opaque, and the present application does not limit this.

[0068] like Figure 5As shown, the front lens 110 includes a first area 111 and a second area 112 spaced apart from each other. The first heating structure 121 is located in the first area 111 at least partially in the orthographic projection of the front lens 110, and the first heating structure 121 is used to heat the first area 111 of the front lens 110. Preferably, the minimum envelope circle of the orthographic projection of the first heating structure 121 on the front lens 110 completely covers the first area 111, so that the first heating structure 121 can fully heat the first area 111 of the front lens 110. The second heating structure 122 is located in the second area 112 at least partially in the orthographic projection of the front lens 110, and the second heating structure 122 is used to heat the second area 112 of the front lens 110. Preferably, the minimum envelope circle of the orthographic projection of the second heating structure 122 on the front lens 110 completely covers the second area 112, so that the second heating structure 122 can fully heat the second area 112 of the front lens 110. During manufacturing, the heating film 120 may be manufactured first, and then the heating film 120 and the front lens 110 may be injection molded together by in-mold injection. When manufacturing the heating film 120, a film 12a may be provided first, and then the first heating structure 121 and the second heating structure 122 may be electroplated on the film 12a.

[0069] like Figure 3 and 4 As shown, the lighting device 100 may further include a housing 130 , and an integral part formed by the front lens 110 and the heating film 120 is installed on the housing 130 , and a radar mounting structure 131 and a camera mounting structure 132 are provided on the housing 130 .

[0070] The radar mounting structure 131 cooperates with the external radar bracket 20 and the screw 40 to install the radar detection device 200 on the rear side of the lighting device 100. When the radar detection device 200 is installed on the rear side of the lighting device 100, the signal window 210 of the radar detection device 200 is projected on the front lens 110 in the first area 111, and the first area 111 is the transmission area of ​​the radar signal on the front lens 110.

[0071] The camera mounting structure 132 cooperates with the external camera bracket 30 and the screw 40 to install the camera 300 on the rear side of the lighting device 100. When the camera 300 is installed on the rear side of the lighting device 100, the orthographic projection of the lens 310 of the camera 300 on the front lens 110 is located in the second area 112, and the second area 112 is the corresponding shooting area of ​​the lens 310 of the camera 300 on the front lens 110.

[0072] like Figure 5As shown, the first heating structure 121 is in the shape of strips spaced apart from each other, and a plurality of strip-shaped first heating structures 121 are arranged in parallel. In order to allow the radar signal to pass through the first heating structure normally, the width of each strip-shaped heating wire in the first heating structure 121 can be set to be less than 5 mm, and the width of the hollow structure 121a formed by the first heating structure 121 can be less than 10 mm, and greater than the width of the heating wire. In other embodiments, the first heating structure 121 can also be set to be in the shape of a grid. In this case, the width of the heating wire of the first heating structure 121 can be between 2 and 30 um, and the width of each grid formed by the first heating structure 121 is between 50-1000 um, and the height is between 1000-4000 um. The present application does not limit the specific shape of the first heating structure 121.

[0073] The second heating structure 122 may also be in the form of strips spaced apart from each other. In order to make the second heating structure 122 appear transparent, it does not affect the normal shooting of the camera 300. In other embodiments, the second heating structure may also be arranged in a grid shape or a continuous plate shape, and the present application does not limit the specific shape of the second heating structure 122.

[0074] In some embodiments, the heating wire of the first heating structure 121 may include at least one of silver nanowires, micro-copper wires, micro-alloy wires, carbon nanotubes, and nanowires. The heating wire of the second heating structure 122 may also include at least one of silver nanowires, micro-copper wires, micro-alloy wires, carbon nanotubes, and nanowires.

[0075] like Figure 5 and 6 As shown, in addition to the first heating structure 121 and the second heating structure 122, the heating assembly 12b also includes a first electrode V1, a second electrode V2, an intermediate electrode Vm and a reference electrode GND. The first heating structure 121 is electrically connected between the first electrode V1 and the intermediate electrode Vm, and the equivalent resistance of the first heating structure 121 is R1. The second heating structure 122 is electrically connected between the second electrode V2 and the intermediate electrode Vm, and the equivalent resistance of the second heating structure 122 is R2. The intermediate electrode Vm is electrically connected to the reference electrode GND.

[0076] The first electrode V1 and the reference electrode GND are used to receive a first control signal, which is, for example, a voltage signal or a current signal, and the first control signal is used to control the first heating structure 121 to generate heat. The second electrode V2 and the reference electrode GND are used to receive a second control signal, which is, for example, a voltage signal or a current signal, and the second control signal is used to control the second heating structure 122 to generate heat.

[0077] In this embodiment, the heating component 12b may further include a third heating structure 123, the third heating structure 123 is electrically connected between the middle electrode Vm and the reference electrode GND, the equivalent resistance of the third heating structure 123 is R3, and the third heating structure 123 may be set to be transparent. In particular, when light needs to be transmitted on the connection path between the middle electrode Vm and the reference electrode GND, it is necessary to set a transparent third heating structure 123 in order to avoid the influence of the connection line on the light. In other embodiments, the third heating structure 123 may also be omitted, in which case the middle electrode Vm and the reference electrode GND are directly electrically connected through a copper busbar.

[0078] exist Figure 5 In the embodiment shown, the first heating structure 121 and the second heating structure 122 receive different control signals respectively, and the two can be controlled separately. In other embodiments, the first heating structure 121 and the second heating structure 122 can also be arranged to be connected in series, and the two receive the same control signal so as to be controlled synchronously.

[0079] like Figure 3 and 4 As shown, the lighting device 100 further includes an inner lens 150 and a heat sink 160. The light source assembly 140 is mounted on the heat sink 160, and the light source assembly 140 and the heat sink 160 can be connected by a thermally conductive adhesive, and the heat sink 160 can dissipate heat for the light source assembly 140. The light source assembly 140 and the heat sink 160 are mounted on the housing 130. The inner lens 150 is used to receive and transmit the light emitted by the light source assembly 140, so that the light is emitted from the front lens 110.

[0080] like Figure 3 and 4 As shown, the lighting device 100 may further include a rear lens 170, and the heating film 120 is disposed between the front lens 110 and the rear lens 170, and the front lens 110, the heating film 120 and the rear lens 170 form an integral part. During manufacturing, the heating film 120 may be manufactured first, and then the heating film 120, the front lens 110 and the rear lens 170 may be injection molded together by in-mold injection molding. At this time, the front lens 110 and the rear lens 170 together constitute an outer lens, that is, the front lens 110 refers to a part of the front side of the entire outer lens, and the rear lens 170 refers to a part of the rear side of the entire outer lens. It is worth noting that the front lens 110, the heating film 120 and the rear lens 170 are basically overlapping and are all circular, but the three may also be other shapes that are the same or different from each other. In addition, in some embodiments, the rear lens 170 may be omitted and only the front lens 110 may be used as an outer lens; or the rear lens 170 and the inner lens 150 may be made into one lens element for transmitting the light beam emitted by the light source assembly 140 .

[0081] Furthermore, a through hole 170a is provided on the rear lens 170 at a position corresponding to the lens 310 of the camera 300, and the lens 210 of the camera 300 can be disposed in the through hole 170a. The lighting device 100 further includes a light shielding ring 180, which can be disposed in the through hole 170a to prevent light from leaking from the inner wall of the through hole 170a. It is worth noting that in order to prevent the external environment (such as dust, rain, etc.) from affecting the internal components of the lighting device 100, the front lens 110 is configured as a closed structure, that is, the front lens 110 does not have an opening.

[0082] Figure 7 3D is a schematic diagram of the three-dimensional structure of the lighting device 100 according to the second embodiment of the present application at a first viewing angle. Figure 8 for Figure 7 FIG. 1 is a schematic diagram of the three-dimensional structure of the lighting device 100 at a second viewing angle. Fig. 9 for Figure 7 Schematic diagram of the cross-sectional structure of the lighting device. Fig.10 for Figure 7 Schematic diagram of the exploded structure of the lighting device, in which the heating film 120 is integrated on the rear side of the front lens 110. Fig.11 for Figure 7 FIG. 1 is a partial structural diagram of the lighting device 100 , showing the structural details of each layer of the outer lens.

[0083] like Figure 7-11 As shown, the lighting device 100 in the second embodiment is similar in structure to the lighting device 100 in the first embodiment, and the main difference is that the overall appearance of the lighting device 100 is different. In the first embodiment, the lighting device 100 is approximately circular, while in the second embodiment, the lighting device 100 is approximately square. The present application does not specifically limit the shape of the lighting device 100. It is worth noting that the same reference numerals in the second embodiment and the first embodiment represent the same elements, and the same contents will not be repeated here.

[0084] like Figure 10-11 As shown, the outer lens of the lighting device 100 includes a front lens 110, a rear lens 170, and a heating film 120 disposed between the front lens 110 and the rear lens 170. In addition, a white paint layer 191 and a black paint layer 192 are disposed on the rear side of the rear lens 170. The white paint layer 191 has a light-reflecting effect, so that the light emitted by the light source assembly 140 is more reflected toward the front side of the rear lens 170. The black paint layer 192 is used to block light to prevent the light from leaking toward the rear side of the rear lens 170. Thereby, the light output efficiency of the light source assembly 140 is improved as a whole.

[0085] In this embodiment, the lighting device 100 also includes a protective layer 193, which is coated on the front side of the front lens 110. The protective layer 193 contains an anti-UV material so that the front lens 110 has the function of resisting ultraviolet radiation, thereby avoiding the problem of discoloration of the front lens 110 due to long-term ultraviolet radiation.

[0086] The embodiments of the present application further provide a motor vehicle, which may include the lighting device 100 described in any of the above embodiments.

[0087] In some embodiments, the motor vehicle may further include a radar detection device 200 and a camera 300 , both of which are installed on the rear side of the lighting device 100 .

[0088] Although the present application is described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred embodiments of the present application and should not be construed as limiting the present application. The size ratios in the accompanying drawings are merely illustrative and should not be construed as limiting the present application.

[0089] Although some embodiments of the overall concept of the present application have been shown and described, those skilled in the art will understand that the present application may include more other equivalent embodiments without departing from the overall inventive concept of the present application, and the protection scope of the present application is defined by the claims.

Claims

1. A lighting device (100), characterized in that, comprising: a light source assembly (140) for emitting light; a front lens (110) disposed on the front side of the light source assembly for emitting the light emitted by the light source assembly toward the front side of the front lens; and a heating film (120) disposed on the rear side of the front lens (110) and the front side of the light source assembly (140); wherein, the heating film (120) includes a film sheet (12a) and a heating component (12b) formed on the film sheet (12a), the heating component (12b) is used to generate heat to heat the front lens (110), and the heating component (12b) includes a first heating structure (121) formed with a hollow structure (121a).

2. The lighting device according to claim 1, characterized in that, the lighting device further includes a marking structure (12d); the marking structure is disposed on the rear side or the front side of the heating film, or the marking structure is disposed on the rear side of the outer lens.

3. The lighting device according to claim 2, characterized in that, the marking structure is set to be transparent, and when the light source assembly emits light, the light emitted by the light source assembly lights up the marking structure.

4. The lighting device according to claim 1, characterized in that, the front lens (110) includes a first area (111), at least part of the orthographic projection of the first heating structure (121) on the front lens is located in the first area (111), and the first heating structure is used to heat the first area of the front lens; the lighting device includes a housing (130), the front lens (110) is mounted on the housing, and a radar mounting structure (131) is provided on the housing, and the radar mounting structure (131) is used to mount a radar detection device (200) on the rear side of the lighting device. When the radar detection device is mounted on the lighting device, the signal window (210) of the radar detection device is located in the first area (111) in the orthographic projection of the front lens.

5. The lighting device according to claim 4, characterized in that, the minimum circumscribed circle of the orthographic projection of the first heating structure (121) on the front lens (110) completely covers the first area (111), and the first heating structure (121) enables the signal window (210) of the radar detection device (200) to normally receive and transmit radar signals by forming the hollow structure (121a).

6. The lighting device according to claim 1, characterized in that, the first heating structure (121) is in a grid shape, the width of the heating wire of the first heating structure is between 2 and 30 um, the width of each grid formed by the first heating structure is between 50 - 1000 um, and the height is between 1000 - 4000 um; or The first heating structure (121) is in the form of strips spaced from each other, the width of the heating wire of the first heating structure is less than 5 mm, and the width of the hollow structure between adjacent heating wires is less than 10 mm.

7. The lighting device according to claim 1, characterized in that the heating wire of the first heating structure (121) comprises at least one of silver nanowires, micro copper wires, micro alloy wires, carbon nanotubes and nanowires.

8. The lighting device according to claim 1, characterized in that the orthographic projection of the logo structure (12d) on the front lens and the orthographic projection of the first heating structure (121) on the front lens include an overlapping part, and the first heating structure is transparent.

9. The lighting device according to claim 1, characterized in that the lighting device further comprises an inner lens (150) and a radiator (160); wherein, the light source assembly (140) is installed on the radiator (160), and the inner lens (150) is used to receive and transmit the light emitted by the light source assembly (140), so that the light is emitted from the front lens (110).

10. The lighting device according to claim 1, characterized in that the front lens and the heating film are formed as an integral part.

11. The lighting device according to any one of claims 1 to 10, characterized in that the lighting device (100) further comprises a rear lens (170), the heating film (120) is arranged between the front lens (110) and the rear lens (170), and the front lens, the heating film and the rear lens are formed as an integral part.

12. The lighting device according to claim 11, characterized in that a white paint layer (191) and a black paint layer (192) are arranged on the rear side of the rear lens.

13. The lighting device according to any one of claims 1 to 10, characterized in that the lighting device further comprises a protective layer (193), the protective layer is coated on the front side of the front lens, and the protective layer contains anti-UV material.

14. The lighting device according to any one of claims 1 to 10, characterized in that the heating assembly (12b) further comprises a second heating structure (122), and the second heating structure (122) is transparent; the front lens (110) further comprises a second area (112), at least part of the orthographic projection of the second heating structure (122) on the front lens is located in the second area (112), and the second heating structure is used to heat the second area of the front lens; a camera mounting structure (132) is arranged on the housing, and the camera mounting structure (132) is used to mount a camera (300) on the rear side of the lighting device. When the camera is mounted on the lighting device, the lens (310) of the camera is located in the second area (112) in the orthographic projection of the front lens.

15. A motor vehicle, characterized in that the motor vehicle comprises the lighting device (100) according to any one of claims 1-14.

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