Lighting device and motor vehicle

Abstract

The invention provides a lighting device and a motor vehicle. The lighting device comprises a front lens and a heating film arranged on the rear side of the front lens. 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 second heating structure, the first heating structure forms a hollow structure, and the second heating structure is transparent.

Description

Technical Field

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

[0002] In the technical field of lighting devices, various lighting or signal indication devices are known for providing light for lighting or signal indication. For example, vehicle lamps are used in motor vehicles to provide lighting or signal indication functions to ensure safe driving or provide decorative functions. However, in cold weather, when the surface of the vehicle lamp is covered with ice, the functions of the vehicle lamp cannot be effectively used. Therefore, how to propose a lighting device that can meet the customer's requirements for styling and also take into account the normal use of its functions is actually a technical problem that needs to be solved urgently at present. Summary of the Invention

[0003] An object of the present application is to overcome at least one of the problems and defects existing in the prior art.

[0004] A first aspect of the present application provides a lighting device, which includes a front lens and a heating film disposed behind the front lens;

[0005] Wherein, the heating film includes a film sheet and a heating component formed on the film sheet, the heating component is used to generate heat to heat the front lens, the heating component includes a first heating structure and a second heating structure, the first heating structure is formed with a hollow structure, and the second heating structure is transparent.

[0006] In some embodiments, the front lens includes a first region and a second region,

[0007] At least a part of the orthographic projection of the first heating structure on the front lens is located in the first region, and the first heating structure is used to heat the first region of the front lens,

[0008] At least a part of the orthographic projection of the second heating structure on the front lens is located in the second region, and the second heating structure is used to heat the second region of the front lens.

[0009] In some embodiments, the lighting device includes a housing, the front lens is mounted on the housing, and a radar mounting structure and a camera mounting structure are provided on the housing;

[0010] The radar mounting structure is used to mount a radar detection device behind the lighting device. When the radar detection device is mounted on the lighting device, the signal window of the radar detection device is orthographically projected on the front lens and is located in the first region;

[0011] The camera mounting structure is used to mount the 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 region.

[0012] In some embodiments, the minimum circumscribed circle of the orthographic projection of the first heating structure on the front lens completely covers the first region. The first heating structure is formed with the hollow structure so that the signal window of the radar detection device can normally receive and transmit radar signals.

[0013] The minimum circumscribed circle of the orthographic projection of the second heating structure on the front lens completely covers the second region. The second heating structure is made transparent so that the camera lens can normally capture images and / or video data.

[0014] In some embodiments, the camera shooting area corresponding to the camera lens on the diaphragm is made transparent.

[0015] In some embodiments, the first heating structure is in a grid shape. The width of the heating wire of the first heating structure is between 2 and 30 μm. The width of each grid formed by the first heating structure is between 50 - 1000 μm, and the height is between 1000 - 4000 μm. Or the first heating structure (121) is in the form of spaced strips. 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 and greater than the width of the heating wire.

[0016] The second heating structure is in a plate shape, grid shape or in the form of spaced strips.

[0017] In some embodiments, the heating wire of the first heating structure includes at least one of silver nanowires, micro copper wires, micro alloy wires, carbon nanotubes and nanowires.

[0018] The heating wire of the second heating structure includes at least one of silver nanowires, micro copper wires, micro alloy wires, carbon nanotubes and nanowires.

[0019] In some embodiments, the heating assembly further includes a first electrode, a second electrode, an intermediate electrode and a reference electrode. The first heating structure is electrically connected between the first electrode and the intermediate electrode. The second heating structure is electrically connected between the second electrode and the intermediate electrode. The intermediate electrode is electrically connected to the reference electrode.

[0020] The first electrode and the reference electrode are configured to receive a first control signal for controlling the first heating structure to generate heat. The second electrode and the reference electrode are configured to receive a second control signal for controlling the second heating structure to generate heat.

[0021] In some embodiments, the heating assembly further includes a third heating structure electrically connected between the intermediate electrode and the reference electrode;

[0022] The third heating structure is transparent.

[0023] In some embodiments, the heating assembly further includes a first electrode, an intermediate electrode, and a reference electrode. The first heating structure is electrically connected between the first electrode and the intermediate electrode, and the second heating structure is electrically connected between the intermediate electrode and the reference electrode;

[0024] The first electrode and the reference electrode are configured to receive a control signal for controlling the first heating structure and the second heating structure to generate heat.

[0025] In some embodiments, the lighting device serves as a marker lamp, and the lighting device further includes a light source assembly;

[0026] A marker structure is provided on the diaphragm, and the marker structure is configured to be transparent;

[0027] When the light source assembly emits light, the outgoing light from the front lens towards the front side presents the shape of the marker structure.

[0028] In some embodiments, the orthographic projection of the marker 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.

[0029] In some embodiments, the marker structure includes a first marker structure and a second marker structure. The orthographic projection of the first marker structure on the front lens and the orthographic projection of the first heating structure on the front lens include an overlapping portion;

[0030] The orthographic projection of the second marker structure on the front lens and the orthographic projection of the heating assembly on the front lens include an overlapping portion, and all of the heating assembly corresponding to the overlapping portion is transparent.

[0031] In some embodiments, the lighting device further includes an inner lens and a radiator;

[0032] Wherein, the light source assembly is mounted on the radiator, and the inner lens is configured to receive and transmit the light emitted by the light source assembly, so that the light is emitted from the front lens.

[0033] 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 piece.

[0034] In some embodiments, a through hole is provided at a position on the rear lens corresponding to the camera lens;

[0035] The lighting device further includes a light shield, and the light shield is disposed in the through hole to prevent light from leaking from the inner wall of the through hole.

[0036] The second aspect of the present application provides a motor vehicle, which includes the lighting device provided in the first aspect and the above embodiments.

[0037] In some embodiments, the motor vehicle further includes a radar detection device and a camera, and both the radar detection device and the camera are installed at the rear side of the lighting device. Description of the Drawings

[0038] Figure 1a FIG. 20 is a perspective structural view of the lighting device according to an embodiment of the present application from a first perspective;

[0039] Figure 1b is Figure 1a a perspective structural view of the lighting device in FIG. 20 from a second perspective;

[0040] Figure 1c is Figure 1a an exploded structural view of the lighting device in FIG. 20;

[0041] Figure 1d is Figure 1a a cross-sectional structural view of the lighting device in FIG. 20;

[0042] Figure 2a FIG. 42 is a partial structural view of the lighting device provided by the embodiment of the present application, showing the first region and the second region of the heating film and the front lens;

[0043] Figure 2b is Figure 2a an equivalent circuit schematic diagram of the heating component of the light-emitting component in FIG. 42;

[0044] Figure 3a FIG. 52 is a partial structural view of the lighting device provided by another embodiment of the present application, showing the first region and the second region of the heating film and the front lens, wherein the first heating structure and the second heating structure are connected in series;

[0045] Figure 3b is Figure 3a an equivalent circuit schematic diagram of the heating component of the light-emitting component in FIG. 52;

[0046] Wherein:

[0047] 100 - Lighting device,

[0048] 110 - Front lens, 111 - First region, 112 - Second region,

[0049] 120 - Heating film, 12a - Film piece, 12b - Heating component, 12c - Camera shooting area, 12d - Marking structure, 12d1 - First marking structure, 12d2 - Second marking structure,

[0050] 121 - First heating structure, 121a - Hollow structure,

[0051] 122 - Second heating structure, 123 - Third heating structure,

[0052] V1 - First electrode, V2 - Second electrode, Vm - Intermediate electrode, GND - Reference electrode

[0053] 130 - Housing, 131 - Radar mounting structure, 132 - Camera mounting structure,

[0054] 20 - Radar bracket, 30 - Camera bracket, 40 - Screw,

[0055] 140 - Light source assembly, 150 - Inner lens, 160 - Radiator,

[0056] 170 - Rear lens, 170a - Through hole, 180 - Light shielding ring,

[0057] 200 - Radar detection device, 210 - Signal window,

[0058] 300 - Camera, 310 - Lens, D - Front side direction. Detailed implementation manners

[0059] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments of the present application are mainly for illustrating possible implementation manners of the technical solutions of the present application, and should not be construed as a limitation on the technical solutions of the present application. In this specification, the same or similar components are indicated by the same or similar reference numerals.

[0060] Currently, more and more motor vehicles are using cameras and radar detection devices (such as millimeter-wave radars or lidar) for Advanced Driver Assistance Systems (ADAS). A feasible solution is to integrate the camera and radar detection devices into the vehicle lights. However, in cold weather, when the surface of the vehicle lights is covered with ice, the functions of the camera and radar detection devices will be interfered. In this case, it is necessary to install heaters for de-icing the camera and radar detection devices. Most of the heaters known to the applicant use metal wires for heating and de-icing, but these heaters often affect the shape of the vehicle lights and even the normal use functions of the camera and radar detection devices.

[0061] Therefore, the embodiments of the present application propose an illumination device that can meet the customer's requirements for the shape and also take into account the normal use of the camera and radar detection devices.

[0062] Figure 1a FIG. 7 is a schematic perspective view of the illumination device 100 according to an embodiment of the present application from a first perspective. Figure 1b For Figure 1a FIG. 11 is a schematic perspective view of the illumination device 100 in FIG. 7 from a second perspective. Figure 1c For Figure 1a FIG. 15 is an exploded schematic view of the illumination device 100 in FIG. 7, and also shows the radar detection device 200 and the camera 300. Figure 1d For Figure 1a FIG. 19 is a schematic cross-sectional view of the illumination device 100 in FIG. 7, and also shows the radar detection device 200 and the camera 300. Figure 2a FIG. 21 is a partial schematic view of the illumination device 100 provided by an embodiment of the present application, showing the first region 111 and the second region 112 of the heating film 120 and the front lens 110. Figure 2b For Figure 2a FIG. 25 is an equivalent circuit schematic diagram of the heating component 12b of the light-emitting component 100 in FIG. 21.

[0063] As Figure 1a - Figure 2b shown, the embodiments of the present application propose an illumination device 100, which includes a front lens 110 and a heating film 120 located behind the front lens 110. 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. The heating component 12b includes a first heating structure 121 and a second heating structure 122. The first heating structure 121 is formed with a hollow structure 121a, and the second heating structure 122 is transparent.

[0064] In this embodiment, the heating film 120 is disposed on the rear side of the front lens 110. The heating film 120 can be heated by being energized, 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 and the camera 300 are integrated on the rear side of the lighting device 100, since the ice on the front side of the front lens 110 is removed, the functions of the radar detection device 200 and the camera 300 are prevented from being interfered by the ice on the front side of the front lens 110 in cold weather. In addition, the first heating structure 121 is formed with a hollow structure 121a. Here, the hollow structure 121a refers to the space not covered by the first heating structure 121. By providing the first heating structure 121 with the hollow structure 121a, 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 transmit radar signals without being affected by the first heating structure 121. On the contrary, if the hollow structure 121a is not provided and the entire first heating structure 121 is a complete plate-like structure, the first heating structure 121 will seriously affect the transmission of radar signals. Finally, by providing that the second heating structure 122 is 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 capture images or videos through the transparent second heating structure 122 without being affected by the second heating structure 122. In this embodiment, the front side refers to the side closer to the front along the front side direction D shown as Figure 1c shown, and the rear side refers to the side closer to the rear along the front side direction D. When the lighting device 100 is installed on a motor vehicle, the front side direction D generally or accurately faces the due front of the motor vehicle.

[0065] In this embodiment, the diaphragm 12a can be made of PC material, PET material, a mixture of PET and PC, or other suitable non-metallic materials, which will not be listed one by one 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. In addition, as Figure 1c shown, at least the camera shooting area 12c corresponding to the camera lens on the diaphragm 12a can be set to be transparent, so that the setting of the diaphragm 12a does not affect the camera function. Furthermore, the entire heating film 120 can realize the function of heating and deicing and does not affect the normal use of the radar detection device 200 and the camera 300 at all. Since the transparent camera shooting area 12c does not affect the camera function, there is no need to open an avoidance hole on the front lens 110, that is, the front lens 110 is set as a complete solid structure to reduce the pollution of the internal components of the lighting device 100 by external dust and other pollution sources.

[0066] In some embodiments, the entire diaphragm 12a may be set to be transparent, and the first heating structure 121 may also be set to be transparent, so that both 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.

[0067] As Figure 2a shown, the front lens 110 includes a first region 111 and a second region 112 that are spaced apart from each other. At least a part of the orthographic projection of the first heating structure 121 on the front lens 110 is located in the first region 111, and the first heating structure 121 is used to heat the first region 111 of the front lens 110. Preferably, the minimum circumscribed circle of the orthographic projection of the first heating structure 121 on the front lens 110 completely covers the first region 111, so that the first heating structure 121 can fully heat the first region 111 of the front lens 110. At least a part of the orthographic projection of the second heating structure 122 on the front lens 110 is located in the second region 112, and the second heating structure 122 is used to heat the second region 112 of the front lens 110. Preferably, the minimum circumscribed circle of the orthographic projection of the second heating structure 122 on the front lens 110 completely covers the second region 112, so that the second heating structure 122 can fully heat the second region 112 of the front lens 110. During manufacturing, the heating film 120 can be manufactured first, and then the heating film 120 and the front lens 110 can be injection-molded together by in-mold injection. When manufacturing the heating film 120, the diaphragm 12a can be provided first, and then the first heating structure 121 and the second heating structure 122 can be electroplated on the diaphragm 12a.

[0068] As Figure 1c and 1d shown, the lighting device 100 may further include a housing 130, and the integrated part formed by the front lens 110 and the heating film 120 is installed in the housing 130. The housing 130 is provided with a radar mounting structure 131 and a camera mounting structure 132.

[0069] The radar mounting structure 131 cooperates with an external radar bracket 20 and screws 40 to install the radar detection device 200 at the rear side of the lighting device 100. When the radar detection device 200 is installed at the rear side of the lighting device 100, the signal window 210 of the radar detection device 200 is located in the first region 111 in the orthographic projection of the front lens 110, and the first region 111 is the transmission region of the radar signal on the front lens 110.

[0070] The camera mounting structure 132 cooperates with the external camera bracket 30 and the screw 40 to mount the camera 300 on the rear side of the lighting device 100. When the camera 300 is mounted 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 within 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.

[0071] As Figure 2a shown, the first heating structure 121 is in the form of strips spaced apart from each other, and a plurality of strip-shaped first heating structures 121 are arranged in parallel. In order to enable the radar signal to pass through the first heating structure normally, the width of each 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 is 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 a grid shape. At this time, the width of the heating wire of the first heating structure 121 can be between 2 and 30 μm, the width of each grid formed by the first heating structure 121 is between 50 - 1000 μm, and the height is between 1000 - 4000 μm. The present application does not limit the specific shape of the first heating structure 121.

[0072] The second heating structure 122 can also be in the form of strips spaced apart from each other. In order to make the second heating structure 122 look transparent and not affect the normal shooting of the camera 300. In other embodiments, the second heating structure can also be set to be in a grid shape or a continuous plate shape. The present application does not limit the specific shape of the second heating structure 122.

[0073] In some embodiments, the heating wire of the first heating structure 121 can 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 can also include at least one of silver nanowires, micro copper wires, micro alloy wires, carbon nanotubes, and nanowires.

[0074] As Figure 2a and 2b shown, in addition to including the first heating structure 121 and the second heating structure 122, the heating assembly 12b further 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.

[0075] 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 this 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 this second control signal is used to control the second heating structure 122 to generate heat.

[0076] In this embodiment, the heating assembly 12b may further include a third heating structure 123, which is electrically connected between the intermediate electrode Vm and the reference electrode GND. The equivalent resistance of the third heating structure 123 is R3, and the third heating structure 123 can be set to be transparent. Especially when light transmission is required on the connection path between the intermediate electrode Vm and the reference electrode GND, it is necessary to set the transparent third heating structure 123 to avoid the influence of the connection line on light. In other embodiments, the third heating structure 123 can also be omitted. At this time, the intermediate electrode Vm and the reference electrode GND are directly electrically connected through a copper bar.

[0077] In Figure 2a - 2b In the illustrated embodiment, 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 set to be connected in series, and the two receive the same control signal and are thus controlled synchronously.

[0078] Specifically, as Figure 3a - 3b shown, Figure 3a is a partial structural schematic diagram of the lighting device provided by another embodiment of the present application, showing the first region 111 and the second region 112 of the heating film 120 and the front lens 110, wherein the first heating structure 121 and the second heating structure 122 are connected in series. Figure 3b For Figure 3a is the equivalent circuit schematic diagram of the heating assembly of the light-emitting component in

[0079] In addition to including the first heating structure 121 and the second heating structure 122, the heating assembly 100 further includes a first electrode V1, 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 is electrically connected between the intermediate electrode Vm and the reference electrode GND, and the equivalent resistance of the second heating structure 122 is R2. The first electrode V1 and the reference electrode GND are used to receive a control signal, which is, for example, a voltage signal or a current signal, and this control signal is used to control the first heating structure 121 and the second heating structure 122 to generate heat.

[0080] Continue to refer to Figure 1a - 1d, the lighting device 100 can be used as a logo light. Specifically, the lighting device 100 may further include a light source assembly 140, and the light source assembly 140 may include a circuit board and light-emitting elements disposed on the circuit board. The light-emitting elements are, for example, LEDs. A logo structure 12d is provided on the diaphragm 12a, and the logo structure 12d is provided to be transparent. When the light source assembly 140 of the lighting device 100 emits light, the light emitted from the front lens 110 toward the front side presents the shape of 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 in the figure, and the second logo 12d2 presents a closed circle as shown in the figure. In other embodiments, the logo structure 12d may also be other shapes, and the lighting device 100 may also be used as a lighting lamp or a signal lamp with other functions.

[0081] In order to provide a transparent camera shooting area 12c and a logo structure 12d, the diaphragm 12a can be set to be transparent, and an opaque ink is applied to the areas outside the camera shooting area 12c and the logo structure 12d, so that the ink area of the diaphragm 12a is opaque, while the camera shooting area 12c and the logo structure 12d are transparent.

[0082] In this embodiment, the orthographic projection of the logo 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 part. In order to prevent the first heating structure 121 from blocking the logo structure 12d, the first heating structure 121 can be set to be transparent as well, so that the heating function of the first heating structure 121 and the logo function of the logo structure 12d can both be used normally without interference.

[0083] In this embodiment, the orthographic projection of the first logo structure 12d1 on the front lens and the orthographic projection of the first heating structure 121 on the front lens include an overlapping part. The orthographic projection of the second logo structure 12d2 on the front lens and the orthographic projection of the heating assembly on the front lens include an overlapping part, and all the heating assemblies corresponding to this overlapping part are transparent. For example, the first heating structure 121, the second heating structure 122, and the third heating structure 123 overlapping with the second logo structure 12d2 are all transparent, so as to prevent the heating assembly 12b from affecting the function of the second logo structure 12d2.

[0084] As Figure 1c and 1dAs shown, the lighting device 100 further includes an inner lens 150 and a radiator 160. Among them, the light source assembly 140 is installed on the radiator 160, and the light source assembly 140 and the radiator 160 can be connected by a thermal conductive adhesive. The radiator 160 can dissipate heat for the light source assembly 140. The light source assembly 140 and the radiator 160 are installed 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.

[0085] As Figure 1c and 1d As shown, the lighting device 100 may further include a rear lens 170. The heating film 120 is disposed between the front lens 110 and the rear lens 170. The front lens 110, the heating film 120, and the rear lens 170 are formed as an integral part. During manufacturing, the heating film 120 can be manufactured first, and then the heating film 120 is injection-molded with the front lens 110 and the rear lens 170 by in-mold injection. At this time, the front lens 110 and the rear lens 170 together form an outer lens. That is, the front lens 110 refers to the front-side part of the entire outer lens, and the rear lens 170 refers to the rear-side part of the entire outer lens. It should be noted that the front lens 110, the heating film 120, and the rear lens 170 are basically overlapped and are all circular, but the three can also be other shapes that are the same or different from each other. In addition, in some embodiments, the rear lens 170 can also be omitted, and only the front lens 110 is used as the outer lens; or the rear lens 170 and the inner lens 150 are made into a lens element for transmitting the light beam emitted by the light source assembly 140.

[0086] Further, a through hole 170a is provided at a position on the rear lens 170 corresponding to the lens 310 of the camera 300. The lens 210 of the camera 300 can be disposed in the through hole 170a. The lighting device 100 further includes a light shield 180, and the light shield 180 can be disposed in the through hole 170a to prevent light from leaking from the inner wall of the through hole 170a. It should be noted that in order to prevent the influence of the external environment (such as dust, rain, etc.) on the internal components of the lighting device 100, the front lens 110 is set to a closed structure, that is, the front lens 110 does not have an opening.

[0087] The embodiments of the present application also provide a motor vehicle, which may include the lighting device 100 described in any of the above embodiments.

[0088] In some embodiments, the motor vehicle may further include a radar detection device 200 and a camera 300. The radar detection device 200 and the camera 300 are both installed on the rear side of the lighting device 100.

[0089] Although the present application has been described with reference to the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the present application and should not be construed as a limitation on the present application. The dimensional ratios in the drawings are merely illustrative and should not be construed as a limitation on the present application.

[0090] Although some embodiments of the general concept of the present application have been shown and described, those of ordinary skill in the art will understand that the present application may further include more other equivalent embodiments without departing from the general 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, it includes: a front lens (110) and a heating film (120) disposed behind the front lens (110); 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), the heating component (12b) includes a first heating structure (121) and a second heating structure (122), the first heating structure (121) is formed with a hollow structure (121a), and the second heating structure (122) is transparent.

2. The lighting device according to claim 1, characterized in that, the front lens (110) includes a first area (111) and a second area (112), 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, 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.

3. The lighting device according to claim 2, characterized in that, the lighting device includes a housing (130), the front lens (110) is installed on the housing, and a radar installation structure (131) and a camera installation structure (132) are provided on the housing; the radar installation structure (131) is used to install a radar detection device (200) on the rear side of the lighting device. When the radar detection device is installed 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; the camera installation structure (132) is used to install a camera (300) on the rear side of the lighting device. When the camera is installed 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.

4. The lighting device according to claim 3, 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 receive and transmit radar signals normally by forming the hollow structure (121a); the minimum circumscribed circle of the orthographic projection of the second heating structure (122) on the front lens (110) completely covers the second area (112), and the second heating structure (122) enables the lens (310) of the camera (300) to capture images and / or video data normally by being set to be transparent.

5. The lighting device according to claim 4, characterized in that, The camera shooting area (12c) corresponding to the lens (310) of the camera (300) on the diaphragm (12a) is set to be transparent.

6. The lighting device according to claim 1, wherein, 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 apart 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 and greater than the width of the heating wire; the second heating structure (122) is in a plate shape, a grid shape or in the form of strips spaced apart from each other.

7. The lighting device according to claim 6, wherein, the heating wire of the first heating structure (121) includes 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) includes at least one of silver nanowires, micro copper wires, micro alloy wires, carbon nanotubes and nanowires.

8. The lighting device according to any one of claims 1 to 7, wherein, the heating component (12b) further 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 and the intermediate electrode, the second heating structure (122) is electrically connected between the second electrode and the intermediate electrode, and the intermediate electrode is electrically connected to the reference electrode; the first electrode (V1) and the reference electrode (GND) are used to receive a first control signal, 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, and the second control signal is used to control the second heating structure (122) to generate heat.

9. The lighting device according to claim 8, wherein, the heating component (12b) further includes a third heating structure (123), and the third heating structure is electrically connected between the intermediate electrode and the reference electrode; the third heating structure is transparent.

10. The lighting device according to any one of claims 1 to 7, wherein, the heating component further includes a first electrode (V1), an intermediate electrode (Vm) and a reference electrode (GND), the first heating structure (121) is electrically connected between the first electrode and the intermediate electrode, and the second heating structure (122) is electrically connected between the intermediate electrode and the reference electrode; the first electrode (V1) and the reference electrode (GND) are used to receive a control signal, and the control signal is used to control the first heating structure (121) and the second heating structure (122) to generate heat.

11. The lighting device according to any one of claims 1 to 7, It is characterized in that the lighting device (100) is used as a marker lamp, and the lighting device further includes a light source assembly (140); a marking structure (12d) is provided on the diaphragm (12a), and the marking structure is provided to be transparent; when the light source assembly emits light, the light rays emitted forward by the front lens (110) present the shape of the marking structure (12d).

12. The lighting device according to claim 11, It is characterized in that the orthographic projection of the marking 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.

13. The lighting device according to claim 11, It is characterized in that the marking structure (12d) includes a first marking structure (12d1) and a second marking structure (12d2), and the orthographic projection of the first marking structure on the front lens and the orthographic projection of the first heating structure on the front lens include an overlapping part; the orthographic projection of the second marking structure on the front lens and the orthographic projection of the heating assembly on the front lens include an overlapping part, and all of the heating assemblies corresponding to the overlapping part are transparent.

14. The lighting device according to claim 11, It is characterized in that the lighting device further includes 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 rays emitted by the light source assembly (140), so that the light rays are emitted from the front lens (110).

15. The lighting device according to any one of claims 1 to 7, It is characterized in that the lighting device (100) further includes a rear lens (170), the heating film (120) is disposed 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.

16. The lighting device according to claim 15, It is characterized in that a through hole (170a) is provided at a position corresponding to the camera lens (310) on the rear lens (170); the lighting device further includes a light shield (180), and the light shield is disposed in the through hole to prevent light from leaking from the inner wall of the through hole.

17. A motor vehicle, It is characterized in that the motor vehicle includes the lighting device (100) according to any one of claims 1-16.

18. The motor vehicle according to claim 17, It is characterized in that the motor vehicle further includes a radar detection device (200) and a camera (300), and both the radar detection device and the camera are installed at the rear side of the lighting device.

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