An exterior lighting assembly and vehicle

Abstract

This utility model relates to the field of exterior lighting technology, and particularly to an exterior lighting assembly and vehicle, including an exterior panel, a diffuser plate, and a lamp housing. The diffuser plate is located between the exterior panel and the lamp housing, and is connected to both the exterior panel and the lamp housing. The diffuser plate has an opaque area and a light-diffusing area. A light-emitting module is provided inside the lamp housing, with the light-emitting end of the light-emitting module facing the light-diffusing area of ​​the diffuser plate. The diffuser plate divides the opaque area and the light-diffusing area, and the light-emitting module inside the lamp housing faces the light-diffusing area. This eliminates redundant components such as a concentrator and a vertical light guide plate, making the lighting assembly structure more compact, reducing space occupation, and adapting to various exterior panels. The partitioned design of the diffuser plate achieves uniform light diffusion, eliminating the need for the complex light path of multi-plate refraction in traditional technologies. This avoids brightness attenuation caused by optical components, thereby improving display uniformity. This not only improves the spatial adaptability and reliability of the lighting assembly, but also improves the optical display effect and reduces manufacturing costs.

Description

Technical Field

[0001] This utility model relates to the field of exterior lighting technology, and in particular to an exterior lighting assembly and a vehicle. Background Technology

[0002] In the field of automotive lighting technology, the optical structure of traditional automotive lights typically includes a light guide module (generally consisting of a horizontal light guide plate, a concentrator, and a vertical light guide plate) and a light-emitting module (generally consisting of a light-emitting element and a light-emitting substrate). Its working principle is as follows: the light-emitting element emits light, part of which is transmitted through the concentrator into the horizontal light guide plate and then emitted irregularly; the remaining part is directly transmitted into the long end of the vertical light guide plate and emitted irregularly. Finally, the light is refracted through the short end of the vertical light guide plate and the horizontal light guide plate to illuminate the window, achieving a wide-angle lighting effect.

[0003] However, existing technologies have significant drawbacks:

[0004] 1. Large space occupation and complex structure: In order to achieve the lighting effect, complex optical lens components and reflective surfaces need to be designed, resulting in a large overall size of the lamp and occupying too much space in the car;

[0005] 2. High cost and complicated installation: The large number of structural components results in high processing, manufacturing and assembly costs, and the complex installation process increases the difficulty of assembly.

[0006] 3. Low reliability: The assembly of multiple parts is prone to abnormal noises during vehicle operation or damage to parts, affecting the service life of the lamps. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide an exterior lighting assembly and vehicle that can improve the spatial adaptability and reliability of the lighting assembly, while improving the optical display effect and reducing the manufacturing cost.

[0008] To solve the above-mentioned technical problems, the first technical solution adopted by this utility model is as follows:

[0009] An exterior lighting assembly includes an exterior panel, a diffuser plate, and a lamp housing. The diffuser plate is located between the exterior panel and the lamp housing and is connected to both the exterior panel and the lamp housing. The diffuser plate has an opaque area and a light-diffusing area. The lamp housing contains a light-emitting module, and the light-emitting end of the light-emitting module is positioned facing the light-diffusing area of ​​the diffuser plate.

[0010] The second technical solution adopted in this utility model is:

[0011] A vehicle includes the aforementioned exterior lighting assembly, wherein the exterior panel is disposed on the exterior of the vehicle, and the diffuser and the lamp housing are both disposed inside the vehicle.

[0012] The beneficial effects of this utility model are as follows:

[0013] The exterior lighting unit in this solution consists of a modular structure comprising an exterior panel, a diffuser plate, and a lamp housing. The diffuser plate is located between the exterior panel and the lamp housing, connecting both and replacing traditional complex light guide and reflection components. The diffuser plate divides the light-emitting area into an opaque area and a light-diffusing area, and the light-emitting module inside the lamp housing is positioned towards the light-diffusing area. This eliminates redundant components such as concentrators and vertical light guide plates, making the lighting unit structure more compact, reducing space occupation, and adapting to various exterior panel installations. The partitioned design of the diffuser plate achieves uniform light diffusion, eliminating the need for the complex light path of multi-plate refraction in traditional technologies. This avoids brightness attenuation caused by optical components, thereby improving display uniformity. Through structural integration and functional optimization, the exterior lighting unit in this solution improves the spatial adaptability and reliability of the lighting unit, while also improving optical display effects and reducing manufacturing costs. It effectively solves the problems of bulky space, complex structure, and insufficient optical performance in traditional designs. Attached Figure Description

[0014] Figure 1 This is an exploded view of the exterior lighting assembly of this utility model;

[0015] Figure 2 This is a cross-sectional view of the exterior panel of the exterior lighting assembly of this utility model;

[0016] Figure 3 This is a cross-sectional view of the tape layer of the exterior lighting assembly of this utility model;

[0017] Figure 4 This is a schematic diagram of the diffuser plate of the exterior lighting assembly of this utility model;

[0018] Figure 5 This is a cross-sectional view of the diffuser plate of the exterior lighting assembly of this utility model;

[0019] Figure 6 This is a cross-sectional view of the exterior panel, tape layer, diffuser plate, and light-emitting module of the exterior light assembly of this utility model.

[0020] Label Explanation:

[0021] 1. Exterior panel; 11. UV coating; 12. Light-shielding coating; 13. Transparent substrate; 2. Diffuser plate; 21. Opaque area; 22. Light diffusion area; 221. Circular arc peak; 222. Circular arc trough; 3. Adhesive tape layer; 31. First adhesive layer; 32. Second adhesive layer; 4. Lamp housing; 41. Light-emitting module; 411. PCB board; 412. LED beads; 6. Wires. Detailed Implementation

[0022] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0023] Please refer to Figures 1 to 6 The first technical solution adopted by this utility model is:

[0024] An exterior lighting assembly includes an exterior panel, a diffuser plate, and a lamp housing. The diffuser plate is located between the exterior panel and the lamp housing and is connected to both the exterior panel and the lamp housing. The diffuser plate has an opaque area and a light-diffusing area. The lamp housing contains a light-emitting module, and the light-emitting end of the light-emitting module is positioned facing the light-diffusing area of ​​the diffuser plate.

[0025] As can be seen from the above description, the beneficial effects of this utility model are as follows:

[0026] The exterior lighting unit in this solution consists of a modular structure comprising an exterior panel, a diffuser plate, and a lamp housing. The diffuser plate is located between the exterior panel and the lamp housing, connecting both and replacing traditional complex light guide and reflection components. The diffuser plate divides the light-emitting area into an opaque area and a light-diffusing area, and the light-emitting module inside the lamp housing is positioned towards the light-diffusing area. This eliminates redundant components such as concentrators and vertical light guide plates, making the lighting unit structure more compact, reducing space occupation, and adapting to various exterior panel installations. The partitioned design of the diffuser plate achieves uniform light diffusion, eliminating the need for the complex light path of multi-plate refraction in traditional technologies. This avoids brightness attenuation caused by optical components, thereby improving display uniformity. Through structural integration and functional optimization, the exterior lighting unit in this solution improves the spatial adaptability and reliability of the lighting unit, while also improving optical display effects and reducing manufacturing costs. It effectively solves the problems of bulky space, complex structure, and insufficient optical performance in traditional designs.

[0027] Furthermore, there are multiple opaque areas and multiple light-diffusing areas, and these multiple opaque areas and multiple light-diffusing areas are alternately arranged.

[0028] As described above, the diffuser plate adopts a composite structure design, with alternating opaque and light-diffusing areas on its surface. This structure prevents light leakage from non-display areas by blocking stray light through the opaque areas. Compared to traditional light guide plates that rely on complex refraction paths, this diffuser plate, through material composites and optical structure integration, simplifies optical components while significantly improving the uniformity and softness of light distribution. It solves the problem of uneven brightness caused by complex optical paths in traditional technologies, providing a stable optical display foundation for external lighting assemblies, and its overall structure is compact and highly adaptable.

[0029] Furthermore, the light-emitting module includes a PCB board and multiple light sources disposed on the PCB board. Each light source corresponds to a light diffusion area of ​​a diffusion plate, and the light-emitting end of the light source faces the light diffusion area.

[0030] As can be seen from the above description, the precise correspondence between the light source of the light-emitting module and the light diffusion area of ​​the diffuser plate ensures that the light is directly incident on the target area, reducing light loss and improving light efficiency, enabling the lamp group to achieve a higher brightness display effect under the same power consumption, while simplifying the optical path design to reduce energy consumption.

[0031] Furthermore, the end face of each light diffusion region near the light source is a wavy surface formed by connecting multiple continuous arc peaks and arc troughs.

[0032] As described above, the end face of the light diffusion area near the light source is designed as a wavy surface formed by the connection of multiple continuous arc peaks and troughs. This structure uses the micro-optical refraction effect of the wavy surface to perform secondary homogenization of the incident light, resulting in a softer surface light source distribution after diffusion. Compared with traditional planar diffusion structures, the wavy surface increases the diversity of light scattering paths through its arc-transition geometry, effectively improving the uniformity of light distribution and solving the problem of uneven brightness caused by direct light in traditional technologies, thus providing a more stable optical display effect for the exterior lighting assembly.

[0033] Furthermore, each of the light sources includes a plurality of LED beads arranged at intervals, with each LED bead corresponding to a circular arc trough and the central axis of the LED bead coinciding with the central axis of the circular arc trough.

[0034] As can be seen from the above description, the coaxial design of the LED beads and the arc-shaped trough of the light diffusion area ensures that the light is incident perpendicularly into the light diffusion area, maximizing the light transmission efficiency and reducing reflection loss. At the same time, it ensures the consistency of the light path of each light-emitting unit (i.e., LED beads), improving the uniformity and stability of the overall light emission of the lamp group.

[0035] Furthermore, the end face of the PCB board with the light source is coated with a white paint layer.

[0036] As described above, the white paint layer on the PCB board surface can reflect light that is directly incident on the board surface but does not pass directly through the diffuser plate. This light is then reintroduced into the light path, effectively improving the overall brightness of the lamp assembly. This enhances the display effect without increasing the power consumption of the light source, achieving the dual goals of energy saving and high brightness.

[0037] Furthermore, the exterior panel has a light-transmitting area and a non-light-transmitting area surrounding the light-transmitting area, and the diffuser plate is installed on the light-transmitting area.

[0038] Furthermore, the outer panel includes a UV coating, a light-shielding coating, and a light-transmitting substrate, which are sequentially stacked on the side of the diffuser away from the lamp housing.

[0039] As described above, through the layered design of a light-transmitting substrate, a light-shielding coating, and a UV coating, the light-transmitting substrate serves as the basic carrier for light transmission. The light-shielding coating covers the entire surface and forms light-transmitting areas (such as the brand logo display area) through an engraving process. The UV coating then hardens and protects the surface. This structure, through the full coverage and selective engraving of the light-shielding coating, precisely defines the light-transmitting and non-light-transmitting areas, making the optical display boundary clear and sharp. At the same time, the UV coating improves the surface's scratch resistance and weather resistance, preventing the light-shielding coating from peeling off due to long-term exposure to light or wear, ensuring the long-term stability of the optical contrast between the light-transmitting and non-light-transmitting areas, and solving the problems of blurred light-transmitting boundaries or easy aging of coatings in traditional spraying processes.

[0040] Furthermore, the lamp housing is hollow inside, and the end face of the lamp housing near the diffuser plate has an opening, and the diffuser plate covers the opening and seals the opening.

[0041] As can be seen from the above description, the sealed cavity design formed by the lamp housing and the diffuser plate provides a dustproof and waterproof protective environment for the light-emitting module, improves the reliability of the lamp assembly under harsh working conditions, avoids circuit failures or optical performance degradation caused by moisture and dust intrusion, and extends the service life.

[0042] Please refer to Figures 1 to 6 The second technical solution adopted by this utility model is as follows:

[0043] A vehicle includes the aforementioned exterior lighting assembly, wherein the exterior panel is disposed on the exterior of the vehicle, and the diffuser and the lamp housing are both disposed inside the vehicle.

[0044] As can be seen from the above description, the beneficial effects of this utility model are as follows:

[0045] By integrating compact and highly reliable exterior lighting units into the vehicle, and through optimized spatial layout and optical design, the vehicle exterior is equipped with flexible lighting display functions, while meeting the installation and adaptation requirements of different models, providing technical support for the personalized and functional design of vehicle exteriors.

[0046] Please refer to Figures 1 to 6 As shown, Embodiment 1 of this utility model is as follows:

[0047] Please refer to Figures 1 to 6 An exterior lighting assembly includes an exterior panel 1, a diffuser plate 2, an adhesive tape layer 3, and a lamp housing 4. The diffuser plate 2 is located between the exterior panel 1 and the lamp housing 4 and is connected to the lamp housing 4. The adhesive tape layer 3 is used to connect the diffuser plate 2 and the exterior panel 1. The exterior panel 1 has a light-transmitting area and a non-light-transmitting area surrounding the light-transmitting area. The diffuser plate 2 is installed on the light-transmitting area. The lamp housing 4 has a light-emitting module 41 inside.

[0048] Please refer to Figure 4 and Figure 5The diffuser plate 2 has multiple opaque areas 21 and multiple light-diffusing areas 22, which are alternately arranged. The light-emitting end of the light-emitting module 41 faces the light-diffusing area 22 of the diffuser plate 2. The opaque areas 21 are formed of black opaque plastic, and the light-diffusing areas 22 are formed of light-diffusing material, mainly to improve the light uniformity of the product and make the logo pattern display more uniform and softer.

[0049] The thickness of the thickest part of the diffuser plate 2 ranges from 4mm to 6mm, and the thickness of the thinnest part of the diffuser plate 2 ranges from 3mm to 5mm.

[0050] Please refer to Figure 6 The light-emitting module 41 includes a PCB board 411 and a plurality of light sources disposed on the PCB board 411. The light sources are disposed in a one-to-one correspondence with the light diffusion areas 22 of the diffusion plate 2, and the light-emitting end of the light source faces the light diffusion area 22.

[0051] Please refer to Figure 4 , Figure 5 and Figure 6 Each light diffusion region 22 has a wave-like surface formed by connecting multiple continuous arc peaks 221 and arc valleys 222 on one end face near the light source; the width of the arc peaks 221 and arc valleys 222 is 8mm-20mm.

[0052] Please refer to Figure 6 Each of the light sources includes multiple LED beads 412, with each LED bead 412 corresponding to a circular arc valley 222 and the central axis of the LED bead 412 coinciding with the central axis of the circular arc valley 222.

[0053] The PCB board 411 has a white paint layer on one end face where the light source is located.

[0054] Please refer to Figure 2 The outer panel 1 includes a UV coating 11, a light-shielding coating 12, and a light-transmitting substrate 13, which are sequentially stacked on the side of the diffuser plate 2 away from the lamp housing 4. The light-transmitting substrate 13 can be any light-transmitting material such as PMMA (polymethyl methacrylate), glass, or a PMMA+ABS integrated black material that is light-transmitting (ABS is an abbreviation for Acrylonitrile Butadiene Styrene copolymer). The light-shielding coating 12 can be composed of electroplated aluminum or black primer that is opaque and adhesive. The UV coating 11 is mainly composed of UV paint. The transparent substrate provides surface protection and light transmission. After spraying or plating a layer of light-shielding coating 12 onto the transparent substrate, a logo pattern is engraved, and then a layer of UV paint is sprayed on to provide surface hardening and enhanced light resistance, thus forming the outer panel 1.

[0055] Please refer to Figure 3 The tape layer 3 includes a first adhesive layer 31 and two second adhesive layers 32 stacked together. The first adhesive layer 31 is located between the two second adhesive layers 32. The first adhesive layer 31 is made of 3M adhesive, and the second adhesive layers 32 are made of EPDM rubber. The layered elastic design of the tape layer enables it to compensate for installation tolerances, adapt to the irregular shape of the vehicle body surface, ensure a tight connection between the exterior panel and the lamp body, reduce assembly difficulty, and lower the risk of abnormal noise or component loosening caused by vibration during vehicle operation, thereby improving the reliability of the lamp assembly installation.

[0056] Please refer to Figure 1 The lamp housing 4 is hollow inside, and the lamp housing 4 has an opening on one end face near the diffuser plate 2. The diffuser plate 2 covers the opening and seals it.

[0057] Please refer to Figure 1 The lamp housing 4 also includes a wire 6, which passes through the lamp housing 4 to the inside of the lamp housing 4 and is electrically connected to the PCB board 411, serving to transmit circuit signals. It is generally composed of two or more wires 6.

[0058] The working principle of the above-mentioned exterior lighting units is as follows:

[0059] Light source emission: After the vehicle is powered on, the LED lamp bead 412 emits light, and the light beam is directed perpendicularly to the center of the arc trough 222 of the diffuser plate 2;

[0060] Light diffusion: When light enters the light diffusion zone 22, it is refracted by the wavy surface and scattered by the light diffusion material to form a uniform surface light source, which improves the uniformity of brightness distribution.

[0061] Optical display: Uniform light passes through the light-transmitting substrate 13 of the outer panel 1, and the light-shielding coating 12 blocks the light in the un-engraved areas, so that the LOGO pattern is clearly displayed. The UV coating 11 protects the surface from scratches.

[0062] Structural coordination: The 3M adhesive of the tape layer 3 fixes the outer trim panel 1 and the diffuser plate 2, and the EPDM rubber layer compensates for the 0.5mm installation tolerance of the body surface curvature to ensure that the outer trim panel 1 is installed flat; the lamp housing 4 and the diffuser plate 2 form an IP67 sealed cavity to prevent moisture intrusion.

[0063] Circuit connection: Wire 6 transmits current to LED bead 412, and the white paint layer on PCB board 411 reflects excess light, improving the overall brightness.

[0064] Please refer to Figures 1 to 6 As shown, Embodiment 2 of this utility model is as follows:

[0065] A vehicle includes the exterior lighting assembly as described in Embodiment 1, wherein the exterior panel 1 is disposed on the exterior of the vehicle, and the diffuser 2, the tape layer 3, and the lamp housing 4 are all disposed inside the vehicle.

[0066] In summary, this utility model provides an exterior lighting assembly and a vehicle. The exterior lighting assembly comprises a modular structure consisting of an exterior panel, a diffuser plate, and a lamp housing. The diffuser plate is located between the exterior panel and the lamp housing and connects the two, replacing traditional complex light guide and reflection components. The diffuser plate divides the light-blocking area into an opaque area and a light-diffusing area, and the light-emitting module inside the lamp housing is positioned towards the light-diffusing area, eliminating redundant components such as concentrators and vertical light guide plates, making the lighting assembly structure more compact, reducing space occupation, and adapting to various exterior panels. The partitioned design of the diffuser plate achieves uniform light diffusion, eliminating the need for the complex light path of multi-plate refraction in traditional technologies. This avoids brightness attenuation caused by optical components, thereby improving display uniformity. The exterior lighting assembly in this solution, through structural integration and functional optimization, can improve the spatial adaptability and reliability of the lighting assembly, while improving optical display effects and reducing manufacturing costs, effectively solving the problems of bulky space, complex structure, and insufficient optical performance in traditional designs. By integrating compact and highly reliable exterior lighting units into the vehicle, and through optimized spatial layout and optical design, the vehicle exterior is equipped with flexible lighting display functions, while meeting the installation and adaptation requirements of different models, providing technical support for the personalized and functional design of vehicle exteriors.

[0067] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An exterior lighting assembly, characterized in that, It includes an outer trim panel, a diffuser plate, and a lamp housing. The diffuser plate is located between the outer trim panel and the lamp housing, and is connected to both the outer trim panel and the lamp housing. The diffuser plate has an opaque area and a light-diffusing area. The lamp housing is equipped with a light-emitting module, and the light-emitting end of the light-emitting module is arranged facing the light-diffusing area of ​​the diffuser plate.

2. The exterior lighting assembly according to claim 1, characterized in that, The number of opaque areas and light-diffusing areas are both multiple, and the multiple opaque areas and multiple light-diffusing areas are alternately arranged.

3. The exterior lighting assembly according to claim 2, characterized in that, The light-emitting module includes a PCB board and multiple light sources disposed on the PCB board. Each light source corresponds to a light diffusion area of ​​a diffusion plate, and the light-emitting end of the light source faces the light diffusion area.

4. The exterior lighting assembly according to claim 3, characterized in that, Each of the light diffusion regions has a wave-like surface formed by connecting multiple continuous arc peaks and arc troughs on one end face near the light source.

5. The exterior lighting assembly according to claim 4, characterized in that, Each of the light sources includes a plurality of LED beads arranged at intervals, with each LED bead corresponding to a circular arc trough and the central axis of the LED bead coinciding with the central axis of the circular arc trough.

6. The exterior lighting assembly according to claim 3, characterized in that, The PCB board has a white paint layer on the end face where the light source is located.

7. The exterior lighting assembly according to claim 1, characterized in that, The exterior panel has a light-transmitting area and a non-light-transmitting area surrounding the light-transmitting area, and the diffuser is installed on the light-transmitting area.

8. The exterior lighting assembly according to claim 7, characterized in that, The outer panel includes a UV coating, a light-shielding coating, and a light-transmitting substrate, which are sequentially stacked on the side of the diffuser away from the lamp housing.

9. The exterior lighting assembly according to claim 1, characterized in that, The lamp housing is hollow inside, and the end face of the lamp housing near the diffuser plate has an opening, and the diffuser plate covers the opening and seals the opening.

10. A vehicle, characterized in that, The exterior lighting assembly includes any one of claims 1-9, wherein the exterior panel is disposed on the exterior of the vehicle, and the diffuser and the lamp housing are both disposed inside the vehicle.

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