Lighting device and motor vehicle

Abstract

The present application provides a lighting device and a motor vehicle. The lighting device (100) comprises a front lens (110) and a heating film (120) disposed on a rear side of the front lens (110), 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 a second heating structure (122), the first heating structure (121) is formed with a hollowed-out structure (121a), and the second heating structure (122) 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 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. 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

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

[0004] A first aspect of the present application provides a lighting device comprising a front lens and a heating film disposed on a rear side of the front lens;

[0005] 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 a second heating structure, the first heating structure is formed with a hollowed-out structure, and the second heating structure is transparent.

[0006] In some embodiments, the front lens comprises a first area and a second 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 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.

[0007] In some embodiments, the lighting device comprises 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;

[0008] 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; and

[0009] the camera mounting structure is used to mount a camera on the 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.

[0010] 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 forms the hollowed-out structure so that the signal window of the radar detection device normally receives and sends a radar signal; and

[0011] a minimum envelope circle of the orthographic projection of the second heating structure on the front lens completely covers the second area, and the second heating structure is set to be transparent so that the lens of the camera normally captures an image and / or video data.

[0012] In some embodiments, a camera capture area on the membrane corresponding to the lens of the camera is set to be transparent.

[0013] 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 the 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 and greater than the width of the heating wire; and

[0014] the second heating structure is in a plate shape, a grid shape or a shape of strips spaced apart from each other.

[0015] 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; and

[0016] the heating wire of the second 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.

[0017] In some embodiments, the heating assembly further comprises a first electrode, a second electrode, an intermediate electrode and a reference electrode, wherein 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, and the intermediate electrode is electrically connected to the reference electrode; and

[0018] the first electrode and the reference electrode are used to receive a first control signal, the first control signal being used to control the first heating structure to generate heat, and the second electrode and the reference electrode are used to receive a second control signal, the second control signal being used to control the second heating structure to generate heat.

[0019] In some embodiments, the heating assembly further comprises a third heating structure, the third heating structure being electrically connected between the intermediate electrode and the reference electrode; and

[0020] the third heating structure is transparent.

[0021] In some embodiments, the heating assembly further comprises 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; and

[0022] the first electrode and the reference electrode are used to receive a control signal, the control signal being used to control the first heating structure and the second heating structure to generate heat.

[0023] In some embodiments, the lighting device is used as a logo lamp, and the lighting device further comprises a light source assembly;

[0024] a logo structure is provided on the membrane, and the logo structure is set to be transparent; and

[0025] when the light source assembly emits light, light emitted from the front lens towards a front side presents the shape of the logo structure.

[0026] 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, and the first heating structure is transparent.

[0027] In some embodiments, the logo structure comprises a first logo structure and a second logo structure, wherein the orthographic projection of the first logo structure on the front lens and the orthographic projection of the first heating structure on the front lens include an overlapping portion; and

[0028] the orthographic projection of the second logo 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.

[0029] In some embodiments, the lighting device further comprises an inner lens and a heat sink;

[0030] 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.

[0031] 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.

[0032] In some embodiments, a through hole is provided on the rear lens at a position corresponding to the camera lens; and

[0033] the lighting device further comprises a light shielding ring, and the light shielding ring is disposed in the through hole to prevent light from leaking from an inner wall of the through hole.

[0034] 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.

[0035] In some embodiments, the motor vehicle further comprises a radar detection device and a camera, wherein the radar detection device and the camera are both mounted on a rear side of the lighting device.Brief Description of the Drawings

[0036] is a schematic diagram of a three-dimensional structure of a lighting device according to an 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 an exploded structure of the lighting device in;

[0039] is a schematic diagram of a cross-sectional structure of the lighting device in;

[0040] is a schematic diagram of a partial structure of the lighting device provided by the embodiment of the present application, showing a heating film and a first area and a second area of a front lens;

[0041] is a schematic diagram of an equivalent circuit of a heating assembly of a light-emitting assembly in;

[0042] is a schematic diagram of a partial structure of a lighting device provided by another embodiment of the present application, showing a heating film and a first area and a second area of a front lens, wherein a first heating structure and a second heating structure are connected in series; and

[0043] is a schematic diagram of an equivalent circuit of a heating assembly of a light-emitting assembly in.

[0044] In the figures:

[0045] 100-lighting device,

[0046] 110-front lens, 111-first area, 112-second area,

[0047] 120-heating film, 12a-membrane, 12b-heating assembly, 12c-camera capture area, 12d-logo structure, 12d1-first logo structure, 12d2-second logo structure,

[0048] 121-first heating structure, 121a-hollowed-out structure,

[0049] 122-second heating structure, 123-third heating structure,

[0050] V1-first electrode, V2-second electrode, Vm-intermediate electrode, GND -reference electrode

[0051] 130-housing, 131-radar mounting structure, 132-camera mounting structure,

[0052] 20-radar holder, 30-camera holder, 40-screw,

[0053] 140-light source assembly, 150-inner lens, 160-heat sink,

[0054] 170-rear lens, 170a-through hole, 180-light shielding ring,

[0055] 200-radar detection device, 210-signal window,

[0056] 300-camera, 310-lens, D-front direction.Detailed Description of the Embodiments

[0057] 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.

[0058] 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.

[0059] 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.

[0060] is a schematic diagram of a three-dimensional structure of a lighting device 100 according to an 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 provided by the embodiment of the present application, 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 12b of a light-emitting assembly 100 in.

[0061] As shown in FIGS. 1a to 2b, the embodiment of the present application proposes a lighting device 100. The lighting device includes a front lens 110 and a heating film 120 located on a rear side of the front lens 110. 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 and a second heating structure 122. The first heating structure 121 is formed with a hollowed-out structure 121a, and the second heating structure 122 is transparent.

[0062] In this embodiment, 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 a front side of the front lens 110. When the radar detection device 200 and the camera 300 are integrated on a 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 and the camera 300 in cold weather. In addition, 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. Finally, 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. In this embodiment, the front side refers to a side close to the front along a front direction D as shown in, and the rear side refers to a side close to the rear along the front direction D. 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] As shown in FIGS. 1c and 1d, 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] As shown in FIGS 2a and 2b, 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.

[0073] 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.

[0074] 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.

[0075] In the embodiment shown in FIGS. 2a and 2b, 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.

[0076] Specifically, as shown in FIGS. 3a and 3b,is a schematic diagram of a partial structure of a lighting device provided by another embodiment of the present application, showing a heating film 120 and a first area 111 and a second area 112 of a front lens 110, wherein a first heating structure 121 and a second heating structure 122 are connected in series.is a schematic diagram of an equivalent circuit of a heating assembly of a light-emitting assembly in.

[0077] In addition to the first heating structure 121 and the second heating structure 122, the heating assembly 100 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, such as a voltage signal or a current signal, the control signal being used to control the first heating structure 121 and the second heating structure 122 to generate heat.

[0078] Continuing to refer to FIGS 1a to 1d, the lighting device 100 may be used as a logo lamp. Specifically, the lighting device 100 may also include a light source assembly 140. The light source assembly 140 may include a circuit board and a light-emitting element disposed on the circuit board, and the light-emitting element is, for example, an LED. A logo structure 12d is provided on the membrane 12a, and the logo structure 12d is set to be transparent. When the light source assembly 140 of the lighting device 100 emits light, 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 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.

[0079] In order to dispose 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.

[0080] 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.

[0081] 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.

[0082] As shown in FIGS. 1c and 1d, 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 thermal 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.

[0083] As shown in FIGS. 1c and 1d, 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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

A lighting device (100), characterised by comprising: a front lens (110) and a heating film (120) disposed on a rear side of the front lens (110);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 a second heating structure (122), the first heating structure (121) is formed with a hollowed-out structure (121a), and the second heating structure (122) is transparent.The lighting device according to claim 1, characterised in that the front lens (110) comprises 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; andat 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.The lighting device according to claim 2, characterised in that the lighting device comprises a housing (130), the front lens (110) is mounted on the housing, and a radar mounting structure (131) and a camera mounting structure (132) are 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); andthe camera mounting structure (132) is used to mount a camera (300) on the 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).The lighting device according to claim 3, characterised 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) forms the hollowed-out structure (121a) so that the signal window (210) of the radar detection device (200) normally receives and sends a radar signal; anda minimum envelope 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) is set to be transparent so that the lens (310) of the camera (300) normally captures an image and / or video data;wherein a camera capture area (12c) on the membrane (12a) corresponding to the lens (310) of the camera (300) is set to be transparent.The lighting device according to claim 1, characterised 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; or the 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 and greater than the width of the heating wire; andthe second heating structure (122) is in a plate shape, a grid shape or a shape of strips spaced apart from each other.The lighting device according to claim 6, characterised 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; andthe heating wire of the second heating structure (122) 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.The lighting device according to any one of claims 1 to 6, characterised in that the heating assembly (12b) further comprises a first electrode (V1), a second electrode (V2), an intermediate electrode (Vm) and a reference electrode (GND), wherein 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; andthe first electrode (V1) and the reference electrode (GND) are used to receive a first control signal, the first control signal being used to control the first heating structure (121) to generate heat, and the second electrode (V2) and the reference electrode (GND) are used to receive a second control signal, the second control signal being used to control the second heating structure (122) to generate heat.The lighting device according to claim 7, characterised in that the heating assembly (12b) further comprises a third heating structure (123), the third heating structure being electrically connected between the intermediate electrode and the reference electrode; andthe third heating structure is transparent.The lighting device according to any one of claims 1 to 6, characterised in that the heating assembly further comprises 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; andthe first electrode (V1) and the reference electrode (GND) are used to receive a control signal, the control signal being used to control the first heating structure (121) and the second heating structure (122) to generate heat.The lighting device according to any one of claims 1 to 6, characterised in that the lighting device (100) is used as a logo lamp, and the lighting device further comprises a light source assembly (140);a logo structure (12d) is provided on the membrane (12a), and the logo structure is set to be transparent; andwhen the light source assembly emits light, light emitted from the front lens (110) towards a front side presents the shape of the logo structure (12d).The lighting device according to claim 10, characterised 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, and the first heating structure is transparent.The lighting device according to claim 10, characterised in that the logo structure (12d) comprises a first logo structure (12d1) and a second logo structure (12d2), wherein the orthographic projection of the first logo structure on the front lens and the orthographic projection of the first heating structure on the front lens include an overlapping portion; andthe orthographic projection of the second logo 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.The lighting device according to claim 10, characterised 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).The lighting device according to any one of claims 1 to 6, characterised 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;wherein a through hole (170a) is provided on the rear lens (170) at a position corresponding to the camera lens (310); andthe lighting device further comprises a light shielding ring (180), and the light shielding ring is disposed in the through hole to prevent light from leaking from an inner wall of the through hole.A motor vehicle, characterized by comprising the lighting device (100) according to any one of claims 1 to 14.

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