Exterior lamp set and vehicle

Abstract

The invention relates to the technical field of exterior trimming lamps, in particular to an exterior trimming lamp set and a vehicle, the exterior trimming lamp set comprises an exterior trimming plate, a diffusion plate, an adhesive tape layer and a lamp shell, the diffusion plate is located between the exterior trimming plate and the lamp shell, the diffusion plate is connected with the lamp shell, the adhesive tape layer is used for connecting the diffusion plate and the exterior trimming plate, and the exterior trimming plate is provided with a light-transmitting area and a non-light-transmitting area surrounding the light-transmitting area; the diffusion plate is installed on the light-transmitting area, a light-emitting module with the light-emitting end facing the diffusion plate is arranged in the lamp shell, and through structural integration and function optimization of the whole exterior trimming lamp set, the space adaptability and use reliability of the lamp set can be improved, meanwhile, the optical display effect is improved, and the manufacturing cost is reduced. The problems of bloated space, complex structure and insufficient optical performance in the traditional design are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of exterior lamps, and in particular to an exterior lamp assembly and a vehicle. Background Art

[0002] In traditional automotive lighting technology, the optical structure typically includes a light guide module consisting of a horizontal light guide plate, a concentrator, and a vertical light guide plate, and a light emitting module consisting of a light emitting element and a light emitting substrate. Light must pass through the concentrator to enter the horizontal light guide plate, then be emitted in irregular directions before entering the vertical light guide plate to illuminate the lamp. This design has the following significant drawbacks: (1) Space occupation and installation limitations: In order to achieve the display effect, a three-dimensional light-guiding structure must be used, which results in a large overall thickness of the lamp and makes it difficult to fit into the narrow installation area of ​​the vehicle exterior (such as the front grille, taillight cover, and other locations with small gaps).

[0003] (2) Structural complexity and reliability issues: Multi-component optical systems (such as light guide plates, concentrators, etc.) require precise assembly, and the large number of structural parts leads to high processing and manufacturing costs; at the same time, complex assembly is prone to reliability issues such as component wear and abnormal noise during vehicle driving vibration.

[0004] (3) Insufficient optical performance: Traditional light-guiding paths rely on multiple refractions and reflections, resulting in severe light loss and uneven brightness distribution, making it difficult to meet the high-precision requirements of modern vehicles for display uniformity. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an exterior lamp group and a vehicle, which can improve the spatial adaptability and reliability of the lamp group, while improving the optical display effect and reducing the manufacturing cost.

[0006] In order to solve the above technical problems, the first technical solution adopted by the present invention is: An exterior lamp group includes an exterior panel, a diffuser, a tape layer and a lamp housing. The diffuser is located between the exterior panel and the lamp housing, and the diffuser is connected to the lamp housing. The tape layer is used to connect the diffuser and the exterior panel. The exterior panel has a light-transmitting area and a non-light-transmitting area surrounding the light-transmitting area. The diffuser is installed on the light-transmitting area. A light-emitting module with a light-emitting end facing the diffuser is provided inside the lamp housing.

[0007] The second technical solution adopted by the present invention is: A vehicle comprises the above-mentioned exterior lamp assembly, wherein the exterior panel is arranged outside the vehicle, and the diffusion plate, the tape layer and the lamp housing are all arranged inside the vehicle.

[0008] The beneficial effects of the present invention are: The exterior lamp group in this solution adopts a planar layered arrangement of exterior panels, tape layers, diffusers, and lamp shells. The various components fit tightly together to form a compact structure without redundant space, significantly reducing the overall volume, so that it can adapt to the narrow installation area of ​​the vehicle exterior; by replacing the horizontal light guide plate, concentrator and other complex components in the traditional light guide module with a single diffuser, the multi-component refraction path is eliminated, the number of optical structural parts is greatly reduced, and the processing and assembly processes are simultaneously simplified, fundamentally reducing manufacturing costs and installation complexity; the light-emitting end of the light-emitting module faces the diffuser, and the light-emitting end is directly incident on the diffuser without an intermediate medium, which shortens the light transmission path, improves the light efficiency with the reflection design, and simplifies the optical path structure to achieve a uniform light-emitting effect; the overall exterior lamp group can improve the spatial adaptability and use reliability of the lamp group through structural integration and function optimization, while improving the optical display effect and reducing manufacturing costs, effectively solving the problems of bloated space, complex structure and insufficient optical performance in traditional designs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 An exploded view of the exterior lamp assembly of the present invention; Figure 2 is a cross-sectional view of an exterior panel of an exterior lamp assembly of the present invention; Figure 3 is a cross-sectional view of the tape layer of the exterior lamp assembly of the present invention; Figure 4 This is a schematic structural diagram of the diffuser plate of the exterior lamp assembly of the present invention; Figure 5 is a cross-sectional view of a diffuser plate of an exterior lamp assembly of the present invention; Figure 6 A cross-sectional view of the exterior lamp assembly of the present invention, wherein the exterior panel, the tape layer, the diffuser plate and the light-emitting module are integrated together; Description of labels: 1. Exterior panel; 11. UV coating; 12. Shading coating; 13. Translucent substrate; 2. Diffuser plate; 21. Optical opaque area; 22. Light diffusion area; 221. Arc peak; 222. 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 lamp beads; 6. Wires. DETAILED DESCRIPTION

[0010] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0011] Please refer to Figures 1 to 6 , the first technical solution adopted by the present invention is: An exterior lamp group includes an exterior panel, a diffuser, a tape layer and a lamp housing. The diffuser is located between the exterior panel and the lamp housing, and the diffuser is connected to the lamp housing. The tape layer is used to connect the diffuser and the exterior panel. The exterior panel has a light-transmitting area and a non-light-transmitting area surrounding the light-transmitting area. The diffuser is installed on the light-transmitting area. A light-emitting module with a light-emitting end facing the diffuser is provided inside the lamp housing.

[0012] From the above description, it can be seen that the beneficial effects of the present invention are: The exterior lamp group in this solution adopts a planar layered arrangement of exterior panels, tape layers, diffusers, and lamp shells. The various components fit tightly together to form a compact structure without redundant space, significantly reducing the overall volume, so that it can adapt to the narrow installation area of ​​the vehicle exterior; by replacing the horizontal light guide plate, concentrator and other complex components in the traditional light guide module with a single diffuser, the multi-component refraction path is eliminated, the number of optical structural parts is greatly reduced, and the processing and assembly processes are simultaneously simplified, fundamentally reducing manufacturing costs and installation complexity; the light-emitting end of the light-emitting module faces the diffuser, and the light-emitting end is directly incident on the diffuser without an intermediate medium, which shortens the light transmission path, improves the light efficiency with the reflection design, and simplifies the optical path structure to achieve a uniform light-emitting effect; the overall exterior lamp group can improve the spatial adaptability and use reliability of the lamp group through structural integration and function optimization, while improving the optical display effect and reducing manufacturing costs, effectively solving the problems of bloated space, complex structure and insufficient optical performance in traditional designs.

[0013] Furthermore, the exterior panel includes a UV coating, a light-shielding coating and a light-transmitting substrate which are sequentially stacked on a side of the diffuser away from the lamp housing.

[0014] From the above description, it can be seen that through the layered design of light-transmitting substrate, light-shielding coating and UV coating, the light-transmitting substrate serves as the basic carrier for light transmission, the light-shielding coating covers its entire surface and forms a light-transmitting area (such as the brand logo display area) through an engraving process, and the UV coating hardens and protects the surface; this structure accurately defines the light-transmitting and non-light-transmitting areas through full coverage and selective engraving of the light-shielding coating, making the optical display boundary clear and sharp; at the same time, the UV coating improves the surface's scratch resistance and weather resistance, prevents the light-shielding coating from falling off due to long-term light exposure or wear, ensures the long-term stability of the optical contrast between the light-transmitting and non-light-transmitting areas, and solves the problems of blurred light-transmitting boundaries or easy aging of the coating in traditional spraying processes.

[0015] Furthermore, the tape layer includes a first adhesive layer and two second adhesive layers stacked together, the first adhesive layer is located between the two second adhesive layers, the first adhesive layer is made of 3M adhesive, and the second adhesive layer is made of EPDM rubber.

[0016] From the above description, it can be seen that 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 the tight connection between the exterior panel and the lamp body, reduce the difficulty of assembly, and reduce the risk of abnormal noise or loose components caused by vibration during vehicle driving, thereby improving the reliability of the lamp group installation.

[0017] Furthermore, the diffusion plate has a plurality of light-proof areas and a plurality of light diffusion areas, and the plurality of light-proof areas and the plurality of light diffusion areas are alternately arranged.

[0018] As can be seen from the above description, the diffuser plate adopts a composite structural design, with alternating opaque and light-diffusing areas on its surface. This structure blocks stray light by blocking it in the opaque areas, preventing light leakage from non-display areas. At the same time, the material properties of the light-diffusing area work synergistically with the arc optical structure to scatter the light emitted by the light source, transforming the point source into a uniform surface light source. Compared to traditional light guide plate designs that rely on complex refraction paths, this diffuser plate integrates material composites with optical structures, significantly improving the uniformity and softness of light distribution while simplifying the optical components. This solves the problem of uneven brightness caused by complex optical paths in traditional technologies, provides a stable optical display foundation for exterior lighting systems, and its overall structure is compact and highly adaptable.

[0019] Furthermore, the light emitting module includes a PCB board and a plurality of light sources arranged on the PCB board. The light sources are arranged in a one-to-one correspondence with the light diffusion areas of the diffusion plate, and the light emitting ends of the light sources face the light diffusion areas.

[0020] From the above description, it can be seen that the precise correspondence between the light source of the light-emitting module and the light diffusion area of ​​the diffuser ensures that light is directly incident on the target area, reduces light loss and improves light efficiency utilization, enables the lamp group to achieve a higher brightness display effect under the same power consumption, and simplifies the optical path design to reduce energy consumption.

[0021] Furthermore, an end surface of each light diffusion region close to the light source is a wavy surface formed by connecting a plurality of continuous arc wave crests and arc wave troughs.

[0022] As can be seen from the above description, the light diffusion zone's end surface, closest to the light source, is designed as a wavy surface formed by a series of continuous arc-shaped peaks and troughs. This structure, through the micro-optical refraction effect of the wavy surface, performs a secondary homogenization on the incident light, resulting in a softer surface light distribution after diffusion. Compared to traditional flat diffusion structures, the wavy surface's arc-shaped transition geometry increases the diversity of light scattering paths, effectively improving the uniformity of light distribution. This solves the brightness unevenness problem caused by direct light in traditional technologies, providing a more stable optical display effect for exterior lighting systems.

[0023] Furthermore, each of the light sources includes a plurality of LED lamp beads, one LED lamp bead is arranged corresponding to one arc trough, and the central axis of the LED lamp bead coincides with the central axis of the arc trough.

[0024] From the above description, it can be seen that the coaxial design of the LED lamp beads and the arc trough of the light diffusion area can ensure that the light is incident vertically on the light diffusion area, maximize the light transmission efficiency and reduce the reflection loss, while ensuring the consistency of the light path of each light-emitting unit (ie LED lamp beads), and improving the uniformity and stability of the overall light emission of the lamp group.

[0025] Furthermore, one end surface of the PCB board where the light source is provided is coated with a white paint layer.

[0026] From the above description, we can see that the white paint layer on the surface of the PCB board can reflect the light that is directly emitted by the light source and does not directly pass through the diffuser plate onto the board surface, and redirect this part of the light into the light path, effectively improving the overall brightness of the lamp group, enhancing the display effect without increasing the power consumption of the light source, and achieving the dual goals of energy saving and high brightness.

[0027] Furthermore, the interior of the lamp housing is hollow, and an end surface of the lamp housing close to the diffusion plate has an opening, and the diffusion plate cover is arranged at the opening and seals the opening.

[0028] From the above description, it can be seen that the sealed cavity design formed by the lamp housing and the diffuser plate provides a dust-proof and waterproof protective environment for the light-emitting module, improves the reliability of the lamp group under harsh working conditions, avoids circuit failure or optical performance degradation caused by water vapor and dust intrusion, and extends the service life.

[0029] Please refer to Figures 1 to 6 , the second technical solution adopted by the present invention is: A vehicle comprises the above-mentioned exterior lamp assembly, wherein the exterior panel is arranged outside the vehicle, and the diffusion plate, the tape layer and the lamp housing are all arranged inside the vehicle.

[0030] From the above description, it can be seen that the beneficial effects of the present invention are: By integrating compact and highly reliable exterior lighting groups 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 vehicle models, providing technical support for the personalized and functional design of the vehicle exterior.

[0031] Please refer to Figures 1 to 6 As shown, the first embodiment of the present invention is: Please refer to Figures 1 to 6A decorative lamp group includes an exterior panel 1, a diffuser plate 2, a 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 the diffuser plate 2 is connected to the lamp housing 4. The 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. A light-emitting module 41 with the light-emitting end facing the diffuser plate 2 is provided inside the lamp housing 4.

[0032] Please refer to Figure 2 The exterior panel 1 includes a UV coating 11, a light-shielding coating 12, and a light-transmitting substrate 13, which are sequentially stacked on a side of the diffuser 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 black, light-transmitting material made of PMMA+ABS (ABS is the abbreviation of AcrylonitrileButadieneStyrene, which refers to a copolymer of acrylonitrile-butadiene-styrene copolymer). The light-shielding coating 12 can be made of electroplated aluminum or a black primer that is light-proof and can be adhered. The UV coating 11 is mainly made of UV paint. The transparent substrate has the functions of surface protection and light transmission. After a layer of light-shielding coating 12 is sprayed or plated on the transparent substrate, a LOGO pattern is engraved, and then a layer of UV paint is sprayed on the transparent substrate to perform functions such as surface hardening and light resistance enhancement to form the exterior panel 1.

[0033] 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 material of the first adhesive layer 31 is 3M adhesive, and the material of the second adhesive layer 32 is EPDM rubber.

[0034] Please refer to Figure 4 and Figure 5 The diffuser plate 2 has multiple opaque areas 21 and multiple light-diffusing areas 22, which are alternately arranged. The opaque areas 21 are made of black opaque plastic, and the light-diffusing areas 22 are made of light-diffusing material. This improves the uniformity of the product's light and makes the logo display more uniform and softer.

[0035] The thickness of the diffuser plate 2 at its thickest position is in the range of 4 mm to 6 mm, and the thickness of the diffuser plate 2 at its thinnest position is in the range of 3 mm to 5 mm.

[0036] Please refer to Figure 6 The light emitting module 41 includes a PCB board 411 and a plurality of light sources arranged on the PCB board 411 . The light sources are arranged in a one-to-one correspondence with the light diffusion areas 22 of the diffusion plate 2 , and the light emitting ends of the light sources face the light diffusion areas 22 .

[0037] Please refer to Figure 4 、 Figure 5 and Figure 6 The end surface of each light diffusion area 22 close to the light source is a wavy surface formed by connecting multiple continuous arc peaks 221 and arc troughs 222; the width of the arc peaks 221 and the arc troughs 222 are both in the range of 8mm-20mm.

[0038] Please refer to Figure 6 Each of the light sources includes a plurality of LED lamp beads 412 , one LED lamp bead 412 is arranged corresponding to one arc trough 222 , and the central axis of the LED lamp bead 412 coincides with the central axis of the arc trough 222 .

[0039] One end surface of the PCB board 411 where the light source is located is coated with a white paint layer.

[0040] Please refer to Figure 1 The interior of the lamp housing 4 is hollow, and an end surface of the lamp housing 4 close to the diffusion plate 2 has an opening, and the diffusion plate 2 covers the opening and seals the opening.

[0041] Please refer to Figure 1 The lamp housing 4 further 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 , playing the role of circuit signal transmission, and is generally composed of two or more wires 6 .

[0042] The working principle of the above-mentioned exterior lamp group is as follows: Light source emission: After the vehicle is powered on, the LED lamp bead 412 emits light, and the light is vertically directed toward the center of the arc trough 222 of the diffuser plate 2; Light diffusion: Light enters the light diffusion area 22 and is refracted by the wavy surface and scattered by the light diffusion material, forming a uniform surface light source, thereby improving the uniformity of brightness distribution; Optical display: Uniform light passes through the light-transmitting substrate 13 of the exterior panel 1, and the unengraved area of ​​the light-shielding coating 12 blocks the light, allowing the LOGO pattern to be clearly displayed, and the UV coating 11 protects the surface from scratches; Structural coordination: The 3M adhesive in tape layer 3 secures exterior panel 1 to diffuser panel 2. The EPDM rubber layer compensates for the 0.5mm installation tolerance on the vehicle body curve, ensuring a smooth installation of exterior panel 1. The lamp housing 4 and diffuser panel 2 form an IP67 sealed cavity to prevent moisture intrusion. Circuit connection: Wire 6 transmits current to LED lamp bead 412, and the white paint layer on PCB board 411 reflects excess light to increase overall brightness.

[0043] Please refer to Figures 1 to 6 As shown, the second embodiment of the present invention is: A vehicle includes the exterior lamp assembly of the first embodiment, wherein the exterior panel 1 is arranged outside the vehicle, and the diffuser 2, the tape layer 3 and the lamp housing 4 are all arranged inside the vehicle.

[0044] In summary, the present invention provides an exterior lamp group and a vehicle, wherein the exterior lamp group adopts an exterior panel, a tape layer, a diffuser plate, and a lamp shell in a planar stacked arrangement, and the various components are tightly fitted to form a compact structure without redundant space, which significantly reduces the overall volume, so that it can adapt to the narrow installation area of ​​the vehicle exterior; by replacing the horizontal light guide plate, concentrator and other complex components in the traditional light guide module with a single diffuser plate, the multi-component refraction path is eliminated, the number of optical structural parts is greatly reduced, and the processing and assembly processes are simultaneously simplified, which fundamentally reduces the manufacturing cost and installation complexity; the light-emitting end of the light-emitting module faces the diffuser plate, and the light-emitting end is directly incident on the diffuser plate without an intermediate medium, which shortens the light transmission path, improves the light efficiency with the reflection design, and simplifies the light path structure to achieve a uniform light-emitting effect; the exterior lamp group as a whole can improve the spatial adaptability and use reliability of the lamp group through structural integration and function optimization, while improving the optical display effect and reducing manufacturing costs, effectively solving the problems of bloated space, complex structure and insufficient optical performance in traditional designs. By integrating compact and highly reliable exterior lighting groups 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 vehicle models, providing technical support for the personalized and functional design of the vehicle exterior.

[0045] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An exterior lamp assembly, characterized in that: The lamp comprises an outer decorative panel, a diffuser plate, a tape layer and a lamp housing, wherein the diffuser plate is located between the outer decorative panel and the lamp housing, the diffuser plate is connected to the lamp housing, the tape layer is used to connect the diffuser plate and the outer decorative panel, the outer decorative panel has a light-transmitting area and a non-light-transmitting area surrounding the light-transmitting area, the diffuser plate is installed on the light-transmitting area, and a light-emitting module with the light-emitting end facing the diffuser plate is provided inside the lamp housing.

2. The exterior lamp assembly according to claim 1, characterized in that: The exterior decoration plate includes a UV coating, a light-shielding coating and a light-transmitting substrate which are sequentially stacked on a side of the diffusion plate away from the lamp housing.

3. The exterior lamp assembly according to claim 1, characterized in that: The tape layer includes a first adhesive layer and two second adhesive layers stacked together, wherein the first adhesive layer is located between the two second adhesive layers. The material of the first adhesive layer is 3M adhesive, and the material of the second adhesive layer is EPDM rubber.

4. The exterior lamp assembly according to claim 1, characterized in that: The diffusion plate has a plurality of light-proof areas and a plurality of light diffusion areas, and the plurality of light-proof areas and the plurality of light diffusion areas are alternately arranged.

5. The exterior lamp assembly according to claim 4, characterized in that: The light emitting module includes a PCB board and a plurality of light sources arranged on the PCB board. The light sources are arranged in a one-to-one correspondence with the light diffusion areas of the diffusion plate, and the light emitting ends of the light sources face the light diffusion areas.

6. The exterior lamp assembly according to claim 5, characterized in that: An end surface of each light diffusion area close to the light source is a wavy surface formed by connecting a plurality of continuous arc wave crests and arc wave troughs.

7. The exterior lamp assembly according to claim 6, characterized in that: Each of the light sources includes a plurality of LED lamp beads, one LED lamp bead is arranged corresponding to one circular arc trough, and the central axis of the LED lamp bead coincides with the central axis of the circular arc trough.

8. The exterior lamp assembly according to claim 5, characterized in that: A white paint layer is coated on one end surface of the PCB board where the light source is located.

9. The exterior lamp assembly according to claim 1, characterized in that: The interior of the lamp housing is hollow, and an end surface of the lamp housing close to the diffusion plate is provided with an opening, and the diffusion plate cover is arranged at the opening and seals the opening.

10. A vehicle, characterized in that: The exterior lamp assembly comprises the exterior decorative panel arranged outside the vehicle, and the diffuser plate, the tape layer and the lamp housing are all arranged inside the vehicle.

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