Vehicle tail lamp and vehicle

Abstract

The utility model relates to the technical field of vehicle lamps, and provides a vehicle tail lamp which comprises a shell. The light-transmitting shell is mounted in the shell, and the light-transmitting shell comprises at least one light-transmitting part; the light guide plate is mounted in the shell and comprises at least one light emitting part, and the light emitting part is opposite to the light transmitting part in direction; the light-emitting assembly is arranged on the light guide plate and used for irradiating the interior of the light guide plate, and light rays emitted by the light-emitting assembly are emitted through the light-emitting part, are emitted to the light-transmitting part and are emitted outwards through the light-transmitting part. According to the utility model, the light rays are reflected and refracted for multiple times in the light guide plate and are emitted from the light transmitting part, and an optical path is fully utilized, so that the thickness requirement of the tail lamp is obviously reduced on the premise of ensuring the uniformity of the lighting effect, the phenomenon of uneven brightness is avoided, the dependence on a plurality of low-power LEDs is reduced, and the material cost and the assembly difficulty are reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lighting technology, specifically to a vehicle taillight and a vehicle. Background Technology

[0002] As an important part of traffic safety, vehicle taillights are mainly used to transmit braking, steering, or position signals to vehicles behind at night or in low visibility conditions. Traditional vehicle taillights usually use multiple low-power LEDs as light sources, combined with a red light-transmitting cover to achieve the lighting effect.

[0003] However, to achieve uniform light distribution, this design requires a relatively thick light-transmitting shell (typically over 30mm), and the distance between the light-emitting surface and the light-emitting surface of the shell needs to be relatively high. This limits the appearance design and space optimization of the taillights, hindering the streamlined design and optimized spatial layout of the vehicle. Furthermore, the thicker shell structure increases material costs and assembly complexity. Therefore, reducing the thickness of the taillight's light-transmitting shell while ensuring uniform light output has become a pressing technical challenge. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a vehicle taillight and a vehicle using the taillight with lower cost while ensuring uniform light effect.

[0005] To solve the above problems, this utility model provides the following technical solution:

[0006] A vehicle taillight, comprising:

[0007] case;

[0008] A light-transmitting shell is installed inside the housing, and the light-transmitting shell includes at least one light-transmitting part;

[0009] A light guide plate is installed inside the housing. The light guide plate includes at least one light emitting part, which is oriented opposite to the light transmitting part.

[0010] A light-emitting component is disposed on the light guide plate and used to illuminate the interior of the light guide plate. The light emitted by the light-emitting component is emitted through the light-emitting part and directed towards the light-transmitting part, and then emitted outward through the light-transmitting part.

[0011] In one embodiment, the light-emitting component includes LED beads, the light guide plate has a mounting hole, the LED beads are disposed in the mounting hole, and the light-emitting surface of the LED beads is aligned with the wall of the mounting hole.

[0012] In one embodiment, the number of LED beads is 3-9.

[0013] In one embodiment, the housing includes a bottom shell, and the bottom shell has a reflective layer on at least one side facing the light guide plate.

[0014] In one embodiment, the LED beads are configured as a plurality of LED beads, and the light-emitting surface of each LED bead opposite to the inner wall of the mounting hole is configured as a plane and / or an arc surface.

[0015] In one embodiment, the side of the light guide plate facing away from the light-transmitting shell is recessed inward to form a plurality of light-refraction grooves, and the side of the light guide plate facing the light-transmitting shell is set as a plane, and any of the light-refraction grooves are recessed inward to form an arc surface structure.

[0016] In one embodiment, the light-transmitting shell further includes a protrusion on the side of the light-transmitting portion facing the light guide plate, and the outer surface of the protrusion is configured as an arc-shaped structure.

[0017] In one embodiment, the shape of the light-transmitting portion includes any one of clover, heart, polygon, ring, and circle, and the shape of the light-emitting portion is the same as that of the light-transmitting portion.

[0018] In one embodiment, the housing includes a top shell, and the light-transmitting shell further includes a non-light-transmitting portion. The top shell is provided with a light-transmitting opening for the light-transmitting portion to be exposed outward. The light-transmitting portion protrudes outward through the light-transmitting opening, and the non-light-transmitting portion is located on the inner side of the top shell and overlaps with the inner wall of the top shell.

[0019] This embodiment also provides a vehicle that includes a taillight as described in any of the above embodiments.

[0020] The beneficial effects of this utility model are: by having light irradiate the light-transmitting shell after multiple reflections and refractions inside the light guide plate, the optical path is fully utilized, thereby significantly reducing the thickness requirement of the light-transmitting shell while ensuring the uniformity of light effect. At the same time, it avoids uneven brightness, reduces the reliance on multiple low-power LEDs, reduces material costs and assembly difficulty, meets the needs of streamlined vehicle exterior design and optimized spatial layout, and also improves the uniformity of light effect and visual effect. Attached Figure Description

[0021] Figure 1 This is a perspective view of one embodiment of a vehicle taillight according to the present invention;

[0022] Figure 2 This is an exploded view of one embodiment of a vehicle taillight according to the present invention;

[0023] Figure 3 This is a schematic diagram of one embodiment of a vehicle taillight according to the present invention;

[0024] Figure 4This is a cross-sectional view of one embodiment of a vehicle taillight according to the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of one embodiment of a vehicle according to the present invention.

[0026] Figure label:

[0027] 10. Taillight; 20. Vehicle; 110. Housing; 210. Light-transmitting shell; 221. Light-transmitting part; 222. Non-light-transmitting part; 310. Light guide plate; 321. Light-emitting part; 410. Light-emitting component; 421. LED lamp bead; 422. Circuit board; 310a. Mounting hole; 321a. Light-reflecting groove; 221a. Protrusion; 121. Top shell; 122. Bottom shell; 121a. Light-transmitting opening. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Please refer to Figure 1-4 As shown, this embodiment provides a vehicle taillight 10, which includes: a housing 110 for the structure and electronic components of the taillight 10, a light-transmitting shell 210 and a light guide plate 310 installed in the housing 110, and a light-emitting component 410 installed on the light guide plate; wherein, the light-transmitting shell 210 includes at least one light-transmitting part 221; the light guide plate 310 includes at least one light-emitting part 321, and the light-emitting part 321 is oriented opposite to the light-transmitting part 221; the light-emitting component 410 is disposed on the light guide plate 310 and is used to irradiate the interior of the light guide plate 310, and the light emitted by the light-emitting component 410 is emitted through the light-emitting part 321, and then shines outward from the light-transmitting part 221 after hitting the light-transmitting part 221.

[0031] Optionally, in one embodiment, the light-transmitting shell 210 includes three light-transmitting portions 221, and the light guide plate 310 includes three light-emitting portions 321, with each light-emitting portion 321 facing the direction of one of the light-transmitting portions 221.

[0032] Based on the above solution, it is understood that the vehicle taillight 10 provided in this embodiment effectively solves the problem of limited appearance design and space optimization caused by the large thickness of traditional taillights 10 through innovative structural design. Specifically, the taillight 10 adopts a combined design of a light-transmitting shell 210, a light guide plate 310, and a light-emitting component 410. The light-emitting part 321 on the light guide plate 310 can efficiently reflect the light emitted by the light-emitting component 410 to the direction of the light-transmitting part 221, and then uniformly emit it outward through the light-transmitting part 221. By having the light illuminate the light-transmitting shell after multiple reflections and refractions inside the light guide plate, the optical path is fully utilized. This significantly reduces the thickness requirement of the light-transmitting shell while ensuring uniform light efficiency, avoids uneven brightness, reduces reliance on multiple low-power LEDs, reduces material costs and assembly difficulty, meets the needs of streamlined vehicle appearance design and space layout optimization, and also improves light efficiency uniformity and visual effect. Therefore, this embodiment not only achieves a reduction in the thickness of the light-transmitting shell, meeting the needs of streamlined vehicle exterior design and optimized spatial layout, but also improves the uniformity of light effect and visual effect, providing a more efficient, economical and aesthetically pleasing solution for the design of vehicle taillights 10.

[0033] Preferably, the light-emitting component 410 includes LED beads 421 and a circuit board 422. A mounting hole 310a is provided in the center of the light guide plate 310. The circuit board 422 is mounted on the side of the light guide plate 310 facing away from the light-transmitting shell 210. The LED beads 421 are mounted on the circuit board 422 and located within the mounting hole 310a, with the light-emitting surface of the LED beads 421 facing the wall of the mounting hole 310a. Through this structural design, the light from the LED beads 421 can directly illuminate the interior of the light guide plate 310 through the mounting hole 310a, thereby utilizing the optical properties of the light guide plate 310 for reflection and / or refraction, ultimately transmitting the light to the light-emitting section 321. The light-emitting section 321 can focus the light entering from the mounting hole 310a and efficiently reflect it to the light-transmitting section 221, achieving uniform light distribution and efficient light output. Furthermore, the number of LED beads 421 is set to 3-9, and in this embodiment, 6 LED beads 421 are preferably used. At least one light-emitting surface (i.e., the main light-emitting surface) of each LED bead 421 is arranged opposite to the inner wall of the mounting hole 310a. This design allows the main light-emitting surface of the LED bead 421 to concentrate the light into the interior of the light guide plate 310 from the mounting hole 310a, maximizing the light utilization efficiency. By optimizing the arrangement of the LED beads 421 and the direction of the main light-emitting surface, the light can be uniformly transmitted to the light-transmitting part 221 after multiple reflections and refractions inside the light guide plate 310, thereby achieving highly uniform light output. In addition, this structural design not only reduces the reliance of the traditional taillight 10 on multiple low-power LEDs, but also significantly reduces the overall thickness and material cost of the light-transmitting shell, while improving the light utilization efficiency and visual effect.

[0034] Preferably, in this embodiment, the light-emitting surface of the LED bead 421 opposite to the inner wall of the mounting hole 310a can be set as a flat surface and / or an arc surface to meet different optical design requirements. In some embodiments, when the LED bead 421 is designed as a block structure, its light-emitting surface opposite to the inner wall of the mounting hole 310a is the main light-emitting surface. This main light-emitting surface is usually designed as a flat surface to ensure that the light can be concentrated and uniformly injected into the mounting hole 310a, and then reflected and refracted by the light guide plate 310. In other embodiments, the structure of the LED bead 421 can be further optimized, for example, by designing one side opposite to the inner wall of the mounting hole 310a as an arc surface, while the other sides remain flat. This design enables the light to have a certain scattering effect when it enters the mounting hole 310a, thereby improving the uniformity of light propagation inside the light guide plate 310. Furthermore, the LED bead 421 can be designed as a hemispherical structure, with its outer surface being entirely curved. This structure can better adapt to the inner wall shape of the mounting hole 310a, allowing light to radiate evenly in all directions from the surface of the LED bead 421, further optimizing the incident angle and propagation path of the light. Through the above-mentioned different LED bead 421 structural designs, the inner wall shape of the mounting hole 310a can be flexibly adapted, thereby maximizing the light utilization efficiency and meeting the optical performance requirements of different application scenarios.

[0035] Preferably, in this embodiment, six LED beads 421 are used, and any two adjacent LED beads 421 are equally spaced. This design ensures that light enters the mounting hole 310a uniformly from multiple directions, thereby improving the uniformity of light distribution in different directions and angles of the light guide plate 310. Specifically, the six LED beads 421 are arranged facing different directions of the inner wall of the mounting hole 310a, allowing light to enter the interior of the light guide plate 310 from multiple angles. After reflection and refraction, a more uniform light output is formed. In addition, the mounting hole 310a is preferably designed as a ring structure, and each LED bead 421 is equally spaced from the inner wall of the mounting hole 310a. This ring-shaped mounting hole 310a design not only provides symmetrical light incident conditions for the LED beads 421, but also further optimizes the propagation path of light inside the light guide plate 310, avoiding uneven light spots caused by inconsistent light incident angles.

[0036] Preferably, the side of the light guide plate 310 facing away from the light-transmitting shell 210 is recessed inward to form multiple refractive grooves 321a, and the side of the light guide plate 310 facing the light-transmitting shell 210 is set as a plane. Each refractive groove 321a is recessed inward to form an arc surface structure. It can be understood that by designing the refractive grooves 321a to be recessed inward, the light entering the light guide plate 310 from the mounting hole 310a is reflected and / or refracted when it hits the groove wall of the refractive groove 321a, thereby changing the direction of light illumination and causing the light to be emitted from the light-emitting part 321 of the light guide plate 310 in the direction of the light-transmitting part 221. Specifically, when the light enters the interior of the light guide plate 310 from the LED bead 421 and reaches the arc surface groove wall of the refractive groove 321a, due to the geometric characteristics of the arc surface, the light will be reflected or refracted according to the different incident angles, thereby changing its propagation direction. By precisely designing the curvature and distribution of the refractive groove 321a, light can be effectively guided to the direction of the light-transmitting part 221 and uniformly emitted from the light-emitting part 321 of the light guide plate 310. This optical design principle fully utilizes the reflection and refraction characteristics of light, enabling efficient light transmission and uniform light distribution after the light undergoes multiple directional adjustments within the light guide plate 310.

[0037] Preferably, the light-transmitting shell 210 further includes a protrusion 221a disposed on the side of the light-transmitting portion 221 facing the light guide plate 310, and the outer surface of the protrusion 221a is configured as an arc-shaped structure. It can be understood that in this embodiment, the protrusion 221a is integrally formed with the light-transmitting portion 221, and the protrusion 221a is configured as a hemispherical structure. With this design, the optical curved surface formed by the protrusion 221a is opposite to the direction of the light-emitting portion 321 of the light guide plate 310, so that when the light reflected from the light-emitting portion 321 reaches the arc-shaped surface of the protrusion 221a, the light will be reflected or refracted according to the different incident angles, thereby changing its propagation path. This secondary optical processing can effectively disperse the concentrated area of ​​light and further optimize the uniformity of light distribution.

[0038] Preferably, the light-transmitting portion 221 can be designed with patterns of different shapes, and the light-emitting portion 321 has the same pattern as the light-transmitting portion 221; it is understood that, for example Figure 1 As shown, the light-transmitting part 221 in this embodiment is set as a "clover" structure. In another embodiment, the light-transmitting part 221 can also be set as a "heart" shape, a "triangle" structure, a "polygon" structure, a "ring" structure, a "circle" structure, and other types of structures. This structure can be set according to user needs. That is, in the structure of the vehicle taillight 10, which uses LED beads 421 to shoot light into the light guide plate 310 and reflects or refracts light through the light-emitting part 321 of the light guide plate 310 to the light-transmitting part 221 and shoots outward from the light-transmitting part 221, the light-transmitting part 221 can be designed into any desired shape according to user needs. This embodiment does not limit it here.

[0039] Preferably, the housing 110 includes a bottom housing 122; the bottom housing has a reflective layer on at least one side facing the light guide plate 310; it is understood that in this embodiment, the reflective layer of the bottom housing 122 is made of a high-reflectivity plastic material, which can reflect the residual light on the back of the light guide plate 310 back for reuse, thereby improving the overall lighting efficiency of the taillight; furthermore, the side of the circuit board 422 close to the bottom housing 122 is attached to the bottom housing 122. This design can not only improve the installation stability of the circuit board 422, but also optimize the space utilization inside the taillight housing, while providing good heat dissipation conditions for the circuit board 422.

[0040] Preferably, the housing 110 includes a top housing 121 that is fastened to the bottom housing 122. The light-transmitting housing 210 also includes a non-light-transmitting part 222. The top housing 121 is provided with a light-transmitting opening 121a for the light-transmitting part 221 to be exposed outward. The light-transmitting part 221 protrudes outward through the light-transmitting opening 121a, so that the light-transmitting part 221 is exposed outside the housing 110 to realize the outward output of light. The non-light-transmitting part 222 is located on the inner side of the top housing 121 and overlaps with the inner wall of the top housing 121 to ensure the light blocking effect of the non-light-transmitting area and avoid light leakage.

[0041] like Figure 5 As shown, this embodiment also provides a vehicle 20, which includes a vehicle taillight 10 as described in any of the embodiments herein. When the vehicle taillight 10 is applied to the vehicle 20, it can improve the lighting effect of the rear of the vehicle 20, thereby enhancing the clarity and aesthetics of the rear of the vehicle 20. It is understood that in this embodiment, the vehicle taillight 10 is applied to an electric two-wheeled bicycle, while in other embodiments, the taillight 10 can also be applied to electric vehicles, fuel vehicles, and other types of vehicles 20. This embodiment will not elaborate on these details.

[0042] In summary, this utility model provides a vehicle taillight and vehicle, which effectively solves the problem of limited appearance design and space optimization caused by the large thickness of traditional taillights through innovative structural design. Specifically, the taillight adopts a combined design of a light-transmitting shell, a light guide plate, and a light-emitting component. The light-emitting part on the light guide plate can efficiently reflect the light emitted by the light-emitting component to the direction of the light-transmitting part, and then uniformly emit it outward through the light-transmitting part. This design allows the light to be emitted from the light-transmitting shell after multiple reflections and refractions between the light guide plate and the light-transmitting shell, making full use of the optical path, thereby significantly reducing the thickness requirement of the light-transmitting shell while ensuring uniform light efficiency. Compared with the traditional design that requires a shell thickness of more than 30mm, this solution can greatly reduce the thickness of the light-transmitting shell by optimizing the optical structure, while avoiding the uneven brightness phenomenon commonly seen in the traditional "starry sky" lighting scheme. In addition, since the light of the light-emitting component is concentrated and guided by the light-emitting part, the reliance on multiple low-power LEDs is reduced, thereby reducing material costs and assembly difficulty. Therefore, this embodiment not only achieves a reduction in taillight thickness, meeting the needs of streamlined vehicle exterior design and optimized spatial layout, but also improves light uniformity and visual effect, providing a more efficient, economical and aesthetically pleasing solution for vehicle taillight design.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A vehicle taillight, characterized in that, include: case; A light-transmitting shell is installed inside the housing, and the light-transmitting shell includes at least one light-transmitting part; A light guide plate is installed inside the housing. The light guide plate includes at least one light emitting part, which is oriented opposite to the light transmitting part. A light-emitting component is disposed on the light guide plate and used to illuminate the interior of the light guide plate. The light emitted by the light-emitting component is emitted through the light-emitting part and directed towards the light-transmitting part, and then emitted outward through the light-transmitting part.

2. The vehicle taillight according to claim 1, characterized in that: The light-emitting component includes LED beads, the light guide plate has mounting holes, the LED beads are disposed in the mounting holes, and the light-emitting surface of the LED beads is aligned with the wall of the mounting holes.

3. The vehicle taillight according to claim 2, characterized in that: The number of LED beads is 3-9.

4. The vehicle taillight according to claim 2, characterized in that: The housing includes a bottom shell, and the bottom shell has a reflective layer on at least one side facing the light guide plate.

5. The vehicle taillight according to claim 2, characterized in that: The LED beads are configured in multiple ways, and the light-emitting surface of each LED bead opposite to the inner wall of the mounting hole is configured as a plane and / or an arc surface.

6. The vehicle taillight according to claim 1, characterized in that: The light guide plate is recessed inward on the side facing away from the light-transmitting shell to form multiple light-refraction grooves. The side of the light guide plate facing the light-transmitting shell is set as a plane, and any of the light-refraction grooves are recessed inward to form an arc surface structure.

7. The vehicle taillight according to claim 1 or 6, characterized in that: The light-transmitting shell also includes a protrusion on the side of the light-transmitting portion facing the light guide plate, and the outer surface of the protrusion is configured as an arc-shaped structure.

8. The vehicle taillight according to claim 1, characterized in that: The shape of the light-transmitting part includes any one of clover, heart, polygon, ring, and circle, and the shape of the light-emitting part is the same as that of the light-transmitting part.

9. The vehicle taillight according to claim 1, characterized in that: The housing includes a top shell, and the light-transmitting shell also includes a non-light-transmitting part. The top shell is provided with a light-transmitting opening for the light-transmitting part to be exposed outward. The light-transmitting part protrudes outward through the light-transmitting opening. The non-light-transmitting part is located on the inner side of the top shell and overlaps with the inner wall of the top shell.

10. A vehicle, characterized in that: Includes the vehicle taillights as described in any one of claims 1 to 9.

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