Lighting device and motor vehicle

Abstract

The present application provides a lighting device and a motor vehicle. The lighting device (100) comprises: a light source assembly (140), the light source assembly (140) being used to emit light; a front lens (110), the front lens being disposed on a front side of the light source assembly, and being used to make the light emitted by the light source assembly exit towards a front side of the front lens; and a heating film (120), the heating film (120) being disposed on a rear side of the front lens (110) and the front side of the light source assembly; wherein the heating film (120) comprises a membrane (12a) and a heating assembly (12b) formed on the membrane (12a), the heating assembly (12b) is used to generate heat to heat the front lens (110), the heating assembly (12b) comprises a first heating structure (121), and the first heating structure (121) is formed with a hollowed-out structure (121a), and the first heating structure (121) is transparent.

Description

LIGHTING DEVICE AND MOTOR VEHICLE

[0001] The present application relates to the technical field of lighting devices, and more specifically, to a lighting device that can emit light and is compatible with a radar, and a motor vehicle.

[0002] In the technical field of lighting devices, various lighting or signal indicating 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, so as to ensure safe travel or provide an ornamental function. However, in cold weather, when the surfaces of the vehicle lamps are covered with ice, the functions of vehicle lamps cannot be effectively used.

[0003] Therefore, how to propose a lighting device that can not only meet customers' demand for styling, but also take into account the normal use of its functions, which is a technical problem that currently needs to be solved urgently.Summary of the Invention

[0004] An objective of the present application is to overcome at least one of the problems and shortcomings 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 being used to emit light;

[0007] a front lens, the front lens being disposed on a front side of the light source assembly and being used to make the light emitted by the light source assembly exit towards a front side of the front lens; and

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

[0009] wherein the heating film comprises a membrane and a heating assembly formed on the membrane, the heating assembly is used to generate heat to heat the front lens, the heating assembly comprises a first heating structure, and the first heating structure is formed with a hollowed-out structure, and the first heating structure is transparent.

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

[0011] the logo structure is disposed on a rear side surface or a front side surface of the heating film, or the logo structure is disposed on a rear side of an outer lens.

[0012] In some embodiments, the logo structure is set 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 comprises a first area, at least part of the orthographic projection of the first heating structure on the front lens is located in the first area, and the first heating structure is used to heat the first area of the front lens; and

[0014] the lighting device comprises a housing, the front lens is mounted on the housing, a radar mounting structure is provided on the housing, the radar mounting structure is used to mount a radar detection device on a rear side of the lighting device, and when the radar detection device is mounted on the lighting device, the orthographic projection of a signal window of the radar detection device on the front lens is located in the first area.

[0015] In some embodiments, a minimum envelope circle of the orthographic projection of the first heating structure on the front lens completely covers the first area, and the first heating structure is formed with the hollowed-out structure so that the signal window of the radar detection device normally receives and sends a radar signal.

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

[0017] the first heating structure is in a shape of strips spaced apart from each other, a heating wire of the first heating structure has a width less than 5 mm, and the hollowed-out structure between adjacent heating wires has a width less than 10 mm.

[0018] In some embodiments, the heating wire of the first heating structure comprises at least one of a silver nano wire, a micro copper wire, a micro alloy wire, a carbon nano tube and a nano wire.

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

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

[0021] wherein the light source assembly is mounted on the heat sink, and the inner lens is used to receive and transmit 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 an integral part.

[0023] In some embodiments, the lighting device further comprises 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, a white paint layer and a black paint layer are provided on a rear side of the rear lens.

[0025] In some embodiments, the lighting device further comprises a protective layer, the protective layer being applied to the front side of the front lens, and the protective layer including an anti-UV material.

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

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

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

[0029] A second aspect of the present application provides a motor vehicle, comprising the lighting device as provided in the first aspect and the above embodiments.Brief Description of the Drawings

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

[0031] is a schematic diagram of a three-dimensional structure of the lighting device inat a second viewing angle;

[0032] is a schematic diagram of an exploded structure of the lighting device in;

[0033] is a schematic diagram of a cross-sectional structure of the lighting device in;

[0034] is a schematic diagram of a partial structure of the lighting device in, showing a heating film and a first area and a second area of a front lens;

[0035] is a schematic diagram of an equivalent circuit of a heating assembly of a light-emitting assembly in;

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

[0037] is a schematic diagram of a three-dimensional structure of the lighting device inat a second viewing angle;

[0038] is a schematic diagram of a cross-sectional structure of the lighting device in;

[0039] is a schematic diagram of an exploded structure of the lighting device in; and

[0040] is a schematic diagram of a partial structure of the lighting device in.

[0041] In the figures:

[0042] 100-lighting device,

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

[0044] 120-heating film, 12a-membrane, 12b-heating assembly, 12c-camera capture area, 12d-logo structure, 12d1-first logo structure, 12d2-second logo structure,

[0045] 121-first heating structure, 121a-hollowed-out structure,

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

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

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

[0049] 20-radar holder, 30-camera holder, 40-screw,

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

[0051] 170-rear lens, 170a-through hole, 180-light shielding 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 of the Embodiments

[0055] Embodiments of the present application will be described in detail below with reference to the drawings. It should be understood that the embodiments of the present application are mainly possible implementations intended to describe the technical solutions of the present application, and should not be construed as limiting the technical solutions of the present application. In the description, identical or similar components are indicated by identical or similar reference numerals.

[0056] At present, more and more motor vehicles are using cameras and radar detection devices (such as millimetre wave radars or laser radars) for advanced driver assistance systems (ADAS). One feasible solution is to integrate the cameras and radar detection devices into the vehicle lamps. However, in cold weather, when the surfaces of the vehicle lamps are covered with ice, the functions of the cameras and radar detection devices will be interfered with by the ice. In this case, it is necessary to mount heaters for the cameras and radar detection devices to remove ice. The heaters known by the applicant mostly use metal wire for heating to remove ice, but these heaters often affect the shape of the vehicle lamps and even affect the normal use functions of the cameras and radar detection devices.

[0057] Therefore, the embodiments of the present application propose a lighting device that can not only meet customers' demand for styling, but also take into account the normal use of cameras and radar detection devices.

[0058] is a schematic diagram of a three-dimensional structure of a lighting device 100 according to a first embodiment of the present application at a first viewing angle.is a schematic diagram of a three-dimensional structure of the lighting device 100 inat a second viewing angle.is a schematic diagram of an exploded structure of the lighting device 100 in, and also shows a radar detection device 200 and a camera 300.is a schematic diagram of a cross-sectional structure of the lighting device 100 in, and also shows the radar detection device 200 and the camera 300.is a schematic diagram of a partial structure of the lighting device 100 in, showing a heating film 120 and a first area 111 and a second area 112 of a front lens 110.is a schematic diagram of an equivalent circuit of a heating assembly of a light-emitting assembly in.

[0059] As shown in FIGS. 1 to 5, the first embodiment of the present application proposes a lighting device 100. The lighting device 100 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 disposed on the circuit board, the light-emitting element being, for example, an LED, and the light source assembly 140 is used to emit light. The front lens 110 is disposed on a front side of the light source assembly 140, and is used to make the light emitted by the light source assembly 140 exit towards a front side of the front lens 110. The heating film 120 is disposed on a rear side of the front lens 110 and the front side of the light source assembly 140, that is, the heating film 120 is disposed between the front lens 110 and the light source assembly 140. The heating film 120 includes a membrane 12a and a heating assembly 12b formed on the membrane 12a. The heating assembly 12b is used to generate heat to heat the front lens 110. The heating assembly 12b includes a first heating structure 121. The first heating structure 121 is formed with a hollowed-out structure 121a.

[0060] In this embodiment, the lighting device 100 includes a light source assembly 140. The light source assembly 140 can emit light, so that the entire lighting device 100 is capable of emitting light, and has a very eye-catching shape, thereby improving driving safety. In addition, the heating film 120 is disposed on the rear side of the front lens 110. The heating film 120 can be energized for heating, and heat generated by heating can remove 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 preventing the ice on the front side of the front lens 110 from interfering with the functions of the radar detection device 200 in cold weather. Finally, the first heating structure 121 is formed with a hollowed-out structure 121a. The hollowed-out structure 121a here refers to a space not covered by the first heating structure 121. By providing the first heating structure 121 that is formed with the hollowed-out structure 121a, when the radar detection device 200 is integrated on the rear side of the lighting device 100, a radar signal of the radar detection device 200 can be normally transmitted through the hollowed-out structure 121a, so that a signal window 210 of the radar detection device 200 normally receives and sends the radar signal without being affected by the first heating structure 121. On the contrary, if the hollowed-out structure 121a is not provided, the entire first heating structure 121 is a complete plate-like structure, and in this case, the first heating structure 121 seriously affects the transmission of the radar signal. In this embodiment, the front side refers to a side close to the front along a front direction D shown in, such as the left side in the perspective of, and the rear side refers to a side close to the rear along the front direction D, such as the right side in the perspective of. When the lighting device 100 is mounted on a motor vehicle, the front direction D is generally or exactly directly towards the front of the motor vehicle.

[0061] In this embodiment, the heating assembly 12b may further include a second heating structure 122. The second heating structure 122 is transparent. The heating film 120 is disposed on the rear side of the front lens 110. The heating film 120 can be energized for heating, and heat generated by heating can remove 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 functions of the camera 300 in cold weather. In addition, by providing the second heating structure 122 that 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 an image or a video through the transparent second heating structure 122 without being affected by the second heating structure 122.

[0062] The lighting device 100 may be used as a logo lamp capable of emitting light. Specifically, the lighting device 100 may further include a logo structure 12d. The logo structure 12d is disposed on the membrane 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 an outer lens 110. The position of the logo structure 12d is not specifically limited in the present application, as long as the style of 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 logo structure 12d may also be in other shapes, and the lighting device 100 may also be used as a lighting lamp or signal lamp with other functions.

[0063] In order to obtain a camera capture area 12c and a logo structure 12d that are transparent, the membrane 12a may be set to be transparent, and an opaque ink may be applied to the area outside the camera capture area 12c and the logo structure 12d, so that the ink area of the membrane 12a is opaque, while the camera capture area 12c and the logo structure 12d are transparent.

[0064] 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 portion. In order to prevent the first heating structure 121 from blocking the logo structure 12d, the first heating structure 121 may also be set to be transparent, so that both the heating function of the first heating structure 121 and the logo function of the logo structure 12d can be used normally without interfering with each other.

[0065] 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 portion. 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 portion, and all of the heating assembly corresponding to the overlapping portion is 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 to prevent the heating assembly 12b from affecting the function of the second logo structure 12d2.

[0066] In this embodiment, the membrane 12a may be made of PC material, PET material, a mixed material of PET and PC, or other suitable non-metallic materials, which are not enumerated here one by one. These non-metallic materials do not interfere with the radar signal, so the function of the radar detection device 200 is not affected by the membrane 12a. In addition, as shown in, at least the camera capture area 12c on the membrane 12a corresponding to the camera lens may be set to be transparent, so that the provision of the membrane 12a does not affect the camera function. Thus, the entire heating film 120 can realize the heating and ice removal functions without affecting the normal use of the radar detection device 200 and the camera 300. Since the transparent camera capture area 12c does not affect the camera function, it is not necessary to provide 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 components inside the lighting device 100.

[0067] In some embodiments, the entire membrane 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 without affecting the overall appearance of the lighting device 100. In other embodiments, the first heating structure 121 may also be opaque, and it is not limited in the present application.

[0068] As shown in, the front lens 110 includes a first area 111 and a second area 112 spaced from each other. At least part of the orthographic projection of the first heating structure 121 on the front lens 110 is located in the first area 111, and the first heating structure 121 is used to heat the first area 111 of the front lens 110. Preferably, a 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. At least part of the orthographic projection of the second heating structure 122 on the front lens 110 is located in the second area 112, and the second heating structure 122 is used to heat the second area 112 of the front lens 110. Preferably, a 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 are injection-moulded together by means of in-mould injection. When manufacturing the heating film 120, a membrane 12a may be provided first, and then a first heating structure 121 and a second heating structure 122 are electroplated on the membrane 12a.

[0069] As shown in FIGS. 3 and 4, the lighting device 100 may also include a housing 130. The integrated part formed by the front lens 110 and the heating film 120 is mounted on the housing 130, and a radar mounting structure 131 and a camera mounting structure 132 is provided on the housing 130.

[0070] The radar mounting structure 131 cooperates with an external radar holder 20 and a screw 40 to mount a radar detection device 200 on the rear side of the lighting device 100. When the radar detection device 200 is mounted on the rear side of the lighting device 100, the orthographic projection of a signal window 210 of the radar detection device 200 on the front lens 110 is located in the first area 111, and the first area 111 is a transmission area of a radar signal on the front lens 110.

[0071] The camera mounting structure 132 cooperates with an external camera holder 30 and a screw 40 to mount a 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 in the second area 112, and the second area 112 is a corresponding capture area of the lens 310 of the camera 300 on the front lens 110.

[0072] As shown in, the first heating structure 121 is in a shape of strips spaced apart from each other, and a plurality of strip-shaped first heating structures 121 are disposed 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 may be set to be less than 5 mm, and the width of the hollowed-out structure 121a formed by the first heating structure 121 is less than 10 mm, and is greater than the width of the heating wire. In other embodiments, the first heating structure 121 may be set in a grid shape. In this case, the heating wire of the first heating structure 121 may have a width between 2 and 30 um, and each grid formed by the first heating structure 121 has a width between 50 and 1000 um and a height between 1000 and 4000 um. The specific shape of the first heating structure 121 is not limited in the present application.

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

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

[0075] As shown in FIGS. 5 and 6, in addition to the first heating structure 121 and the second heating structure 122, the heating assembly 12b 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, such as a voltage signal or a current signal, the first control signal being 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, such as a voltage signal or a current signal, the second control signal being used to control the second heating structure 122 to generate heat.

[0077] In this embodiment, the heating assembly 12b may also include a third heating structure 123. The third heating structure 123 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 may be set to be transparent. In particular, when the connection path between the intermediate electrode Vm and the reference electrode GND needs to be light-transmitting, in order to avoid the influence of the connection line on light, it is necessary to set a transparent third heating structure 123. In other embodiments, the third heating structure 123 may also be omitted. In this case, the intermediate electrode Vm and the reference electrode GND are directly electrically connected through a copper bar.

[0078] In the embodiment shown in, the first heating structure 121 and the second heating structure 122 receive different control signals respectively, and the two may be controlled separately. In other embodiments, the first heating structure 121 and the second heating structure 122 may also be set to be connected in series, and the two receive the same control signal and are thus controlled synchronously.

[0079] As shown in FIGS. 3 and 4, 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 may be connected by thermally conductive glue. 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 light emitted by the light source assembly 140, so that the light is emitted from the front lens 110.

[0080] As shown in FIGS. 3 and 4, 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, 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 are injection-moulded together by means of in-mould injection moulding. 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 a part of the entire outer lens close to the front side, and the rear lens 170 refers to a part of the entire outer lens close to the rear side. It is worth noting that the front lens 110, the heating film 120 and the rear lens 170 are substantially overlapped, and are all circular. However, 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 also be omitted, and only the front lens 110 is be used as the outer lens. Alternatively, the rear lens 170 and the inner lens 150 may be made into a lens element for transmitting a light beam emitted by the light source assembly 140.

[0081] Further, 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 may be provided in the through hole 170a. The lighting device 100 further includes a light shielding ring 180, and the light shielding ring 180 may be provided in the through hole 170a to prevent light from leaking from an inner wall of the through hole 170a. It is worth noting that in order to avoid the influence of the external environment (such as dust, rain, etc.) on components inside the lighting device 100, the front lens 110 is set to a closed structure, that is, no hole is provided on the front lens 110.

[0082] is a schematic diagram of a three-dimensional structure of a lighting device 100 according to a second embodiment of the present application at a first viewing angle.is a schematic diagram of a three-dimensional structure of the lighting device 100 inat a second viewing angle.is a schematic diagram of a cross-sectional structure of the lighting device in.is a schematic diagram of an exploded structure of the lighting device in, wherein a heating film 120 is integrated on a rear side of a front lens 110.is a schematic diagram of a partial structure of the lighting device 100 in, showing structural details of each layer of an outer lens.

[0083] As shown in FIGS. 7 to 11, 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 shape of the lighting device 100 is not specifically limited in the present application. 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] As shown in FIGS. 10 and 11, 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 provided on a rear side of the rear lens 170. The white paint layer 191 has a reflective effect, so that the light emitted by the light source assembly 140 is more reflected towards the front side of the rear lens 170. The black paint layer 192 is used to block light to prevent the light from leaking towards the rear side of the rear lens 170. Thus, the light output efficiency of the light source assembly 140 is improved as a whole.

[0085] In this embodiment, the lighting device 100 further includes a protective layer 193. The protective layer is applied to the front side of the front lens 110. The protective layer 193 includes an anti-UV material so that the front lens 110 has the function of resisting ultraviolet radiation, and avoids the problem of discolouration 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 one of the above embodiments.

[0087] 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 mounted on the rear side of the lighting device 100.

[0088] Although the present application has been described with reference to the drawings, the embodiments disclosed in the drawings are intended to provide an exemplary description of preferred implementations of the present application, and must not be construed as limiting the present application. The dimensional proportions in the drawings are merely schematic, and must not be construed as limiting the present application.

[0089] Although some embodiments of the general concept of the present application have been presented and described, those skilled in the art will understand that the present application may also comprise other equivalent embodiments without departing from the general inventive concept of the present application. The scope of protection of the present application shall be defined by the claims.

Claims

Lighting device (100), characterized by comprising:a light source assembly (140), the light source assembly being used to emit light;a front lens (110), the front lens being disposed on a front side of the light source assembly and being used to make the light emitted by the light source assembly exit towards a front side of the front lens; anda heating film (120), the heating film (120) being disposed on a rear side of the front lens (110) and the front side of the light source assembly (140);wherein the heating film (120) comprises a membrane (12a) and a heating assembly (12b) formed on the membrane (12a), the heating assembly (12b) is used to generate heat to heat the front lens (110), the heating assembly (12b) comprises a first heating structure (121), and the first heating structure (121) is formed with a hollowed-out structure (121a), and the first heating structure is transparent.Lighting device according to Claim 1, characterized in that the lighting device further comprises a logo structure (12d); andthe logo structure is disposed on a rear side surface or a front side surface of the heating film, or the logo structure is disposed on a rear side of an outer lens.Lighting device according to Claim 2, characterized in that the logo structure is set to be transparent, and, when the light source assembly emits light, the light emitted by the light source assembly illuminates the logo structure.Lighting device according to Claim 1, characterized in that the front lens (110) comprises 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; andthe lighting device comprises a housing (130), the front lens (110) is mounted on the housing, a radar mounting structure (131) is provided on the housing, the radar mounting structure (131) is used to mount a radar detection device (200) on a rear side of the lighting device, and when the radar detection device is mounted on the lighting device, the orthographic projection of a signal window (210) of the radar detection device on the front lens is located in the first area (111).Lighting device according to Claim 4, characterized in that a minimum envelope 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) is formed with the hollowed-out structure (121a) so that the signal window (210) of the radar detection device (200) normally receives and sends a radar signal.Lighting device according to Claim 1, characterized in that the first heating structure (121) is in a grid shape, a heating wire of the first heating structure has a width between 2 and 30 um, and each grid formed by the first heating structure has a width between 50 and 1000 um, and a height between 1000 and 4000 um; orthe first heating structure (121) is in a shape of strips spaced apart from each other, a heating wire of the first heating structure has a width less than 5 mm, and the hollowed-out structure between adjacent heating wires has a width less than 10 mm.Lighting device according to Claim 1, characterized in that the heating wire of the first heating structure (121) comprises at least one of a silver nano wire, a micro copper wire, a micro alloy wire, a carbon nano tube and a nano wire.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 portion.Lighting device according to Claim 1, characterized in that the lighting device further comprises an inner lens (150) and a heat sink (160);wherein the light source assembly (140) is mounted on the heat sink (160), and the inner lens (150) is used to receive and transmit light emitted by the light source assembly (140), so that the light is emitted from the front lens (110).Lighting device according to Claim 1, characterized in that the front lens and the heating film are formed as an integral part.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 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.Lighting device according to Claim 11, characterized in that a white paint layer (191) and a black paint layer (192) are provided on a rear side of the rear lens.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 being applied to the front side of the front lens, and the protective layer including an anti-UV material.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), the second heating structure (122) being 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; anda camera mounting structure (132) is provided on the housing, the camera mounting structure (132) is used to mount a camera (300) on a rear side of the lighting device, and, when the camera is mounted on the lighting device, the orthographic projection of the lens (310) of the camera on the front lens is located in the second area (112).Motor vehicle, characterized by comprising the lighting device (100) according to any one of Claims 1 to 14.

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