Tail light and electric vehicle

Abstract

The utility model provides a tail light and electric motor car relates to car lamp technical field. The utility model provides a tail light includes bottom shell, light source subassembly and lamp shade, bottom shell is connected with lamp shade, and the end surface of lamp shade has the even light area, and the side wall has the light leakage prevention area, light source subassembly includes the substrate and a plurality of light source spare, the substrate is located between bottom shell and lamp shade, and is installed in bottom shell, a plurality of light source spare interval distribution, and all install in the end surface of substrate towards lamp shade, the light emitting angle of light source spare is arranged as alpha, 90 DEG >= alpha >= 30 DEG, with the distance of the light emitting angle coincidence of two light source spare adjacent is P, with the distance between the end surface of substrate and lamp shade is H, H >= P. The utility model provides a tail light solves the technical problem of low brightness or high development design cost in prior art.

Description

Technical Field

[0001] This application relates to the field of vehicle lighting, and more specifically, to a taillight and an electric vehicle. Background Technology

[0002] With the development of LED (light emitting diode) technology, LED lights have been applied to two-wheeled vehicles and automobiles. Currently, the taillights of two-wheeled vehicles on the market integrate brake lights and rear position lights to improve vehicle safety during driving. Specifically, the brightness of the brake lights must not be less than 40 cd / m² according to regulations.

[0003] Some low-end taillights emit light directly without light diffusion, resulting in poor uniformity and failing to meet the brightness requirements of brake light regulations. Meanwhile, some high-end taillights, which need to meet both brightness and uniform light distribution requirements, require secondary optical design to meet regulatory brightness standards due to the low luminous efficiency of red light. This involves secondary optical design using techniques such as thick-walled light guides, optical lenses, and reflectors. These optical designs all require custom-made optical component molds, leading to high product development cycles and costs. Utility Model Content

[0004] The purpose of this application is to provide a taillight and a two-wheeled vehicle to alleviate the technical problems of low taillight brightness or high development and design costs in the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] In the first aspect, the taillight provided by this utility model includes a base shell, a light source assembly, and a lamp cover;

[0007] The bottom shell is connected to the lampshade, and the end face of the lampshade has a light-uniforming area and the side wall has a light-leakage-proof area.

[0008] The light source assembly includes a substrate and multiple light source elements. The substrate is located between the bottom shell and the lampshade and is installed inside the bottom shell. The multiple light source elements are spaced apart and are all installed on the end face of the substrate facing the lampshade.

[0009] The light emission angle of the light source is set to α, where 90°≥α≥30°; the distance between the overlapping light emission angles of two adjacent light sources is P, and the distance between the end faces of the substrate and the lampshade is H, where H≥P.

[0010] Furthermore, the light source includes an LED bead, which is mounted on the substrate, and the light-emitting end of the LED bead is covered with an optical lens cover.

[0011] Furthermore, multiple LED beads are evenly arranged on the substrate.

[0012] Furthermore, the light-leakage prevention zone includes matte toothed strips or matte frosted texture.

[0013] Furthermore, the uniform light region includes a grainy texture.

[0014] Furthermore, the bottom shell is provided with vent holes, and a waterproof and breathable membrane is installed at the vent holes.

[0015] Furthermore, the waterproof and breathable membrane is configured as a one-way membrane.

[0016] Furthermore, the bottom shell is provided with a cable outlet, through which the circuitry of the substrate passes for connection to external devices;

[0017] The taillight also includes a protective cover, which is connected to the bottom shell and inserted into the wiring outlet.

[0018] Furthermore, the inner wall of the bottom shell is provided with a first snap-fit ​​structure, and the peripheral wall of the substrate is provided with a second snap-fit ​​structure, wherein the first snap-fit ​​structure and the second snap-fit ​​structure are snap-fitted together.

[0019] Secondly, the electric vehicle provided by this utility model includes a frame and a taillight as described in any of the above claims, wherein the taillight is mounted on the frame.

[0020] Based on the above technical solutions, the technical effects achievable by this utility model can be analyzed as follows:

[0021] The taillight provided by this utility model includes a base shell, a light source assembly, and a lampshade. The base shell is connected to the lampshade, and the end face of the lampshade has a light-uniforming area, while the side wall has a light-leakage-preventing area. The light source assembly includes a substrate and multiple light source elements. The substrate is located between the base shell and the lampshade and is installed inside the base shell. The multiple light source elements are spaced apart and are all installed on the end face of the substrate facing the lampshade. The light emission angle of the light source elements is set to α, where 90° ≥ α ≥ 30°. The distance between the overlapping light emission angles of two adjacent light source elements is defined as P, and the distance between the end faces of the substrate and the lampshade is defined as H, where H ≥ P. The substrate is installed inside the base shell, and the base shell provides a fixed support for the substrate. The lampshade is connected to the base shell and covers the light-emitting side of the light source elements, providing isolation protection, light uniformity, and light leakage prevention for the light source elements.

[0022] The light emission angle α of the light source is greater than 30° and less than 90°, resulting in more concentrated light intensity compared to traditional 120° floodlight sources. The smaller the emission angle α, the more concentrated the light intensity. The end face of the lampshade has a uniform light distribution area. The spacing between the substrate and the lampshade is arranged according to the principle that the distance H between the substrate and the end face of the lampshade is greater than the overlap distance P between the emission angles of two adjacent light sources. This achieves both the required light intensity and uniform light distribution, eliminating the need for reflectors, optical lenses, and thick-walled light guides, thus reducing the cost of optical components. However, some light leakage exists on the sides of the lampshade. Therefore, the sidewalls of the lampshade have a light leakage prevention area, which acts as a light diffusion layer, reducing light leakage from the light source components and effectively mitigating it.

[0023] This taillight utilizes a small-angle light source. By adjusting the emission angle of the light source and the distance between the lampshade and the substrate, and by setting a light-diffusing zone on the lampshade, a balance between light emission efficiency and uniformity is achieved. This not only meets the regulatory requirement that the brake light intensity be no less than 40 cd, but also provides suitable uniformity for a better user experience. Furthermore, it increases light emission efficiency and reduces the cost of optical components without the need for a reflector bowl, optical lens, or thick-walled light guide. It eliminates the need for new optical component molds, significantly shortening the development cycle and reducing the unit price of the finished product. In addition, the lampshade of this taillight has a light-diffusing zone and a light-leakage prevention zone, which effectively reduces the refraction and reflection of light emitted by the light source, equivalent to a light diffusion effect, thus reducing light leakage from the light source. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the optical path of a taillight provided in an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the taillight provided in an embodiment of this application from a first-view perspective;

[0027] Figure 3 An exploded view of the taillight provided in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the taillight lens provided in an embodiment of this application from a first perspective.

[0029] Figure 5 This is a schematic diagram of the taillight lens provided in an embodiment of this application from a second perspective.

[0030] Figure 6 This is a schematic diagram of the taillight provided in an embodiment of this application from a second perspective.

[0031] Figure 7 This is a schematic diagram of the taillight structure provided in an embodiment of this application from a third-person perspective;

[0032] Figure 8 for Figure 6 Cross-sectional view at point AA;

[0033] Figure 9 for Figure 8 A magnified view of a section at point B in the middle;

[0034] Figure 10 This is a structural schematic diagram of the taillight provided in the embodiments of this application from a third or fourth perspective.

[0035] icon:

[0036] 100 - Bottom shell; 110 - Waterproof and breathable membrane; 120 - Cable outlet; 130 - Positioning protrusion; 140 - Positioning rib; 150 - Mounting protrusion;

[0037] 200 - Light source assembly; 210 - Substrate; 211 - Positioning groove; 220 - Light source component;

[0038] 300 - Lampshade; 310 - Uniform light zone; 320 - Light leakage prevention zone;

[0039] 400 - Protective Cover. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] Example 1

[0044] See Figure 2 , Figure 3 , Figure 6 and Figure 7 The taillight provided in this embodiment of the utility model includes a base shell 100, a light source assembly 200, and a lampshade 300. The base shell 100 is connected to the lampshade 300, and the end face of the lampshade 300 has a light-uniforming area 310, and the side wall has a light-leakage-proof area 320. The light source assembly 200 includes a substrate 210 and a plurality of light source elements 220. The substrate 210 is located between the base shell 100 and the lampshade 300 and is installed inside the base shell 100. The plurality of light source elements 220 are spaced apart and are all installed on the end face of the substrate 210 facing the lampshade 300. The light emission angle of the light source element 220 is set to α, where 90°≥α≥30°. The distance between the overlapping light emission angles of two adjacent light source elements 220 is P, and the distance between the end faces of the substrate 210 and the lampshade 300 is H, where H≥P. The substrate 210 is installed inside the base shell 100, and the base shell 100 provides a fixed support for the substrate 210. The lampshade 300 is connected to the base shell 100 and covers the light-emitting side of the light source 220, serving to isolate and protect the light source 220, uniformly distribute light, and prevent light leakage.

[0045] Specifically, in this embodiment, the emission angle α of the light source 220 is set to 30°, 45°, 60°, or 90°. See also Figure 1 , Figure 1 This is a schematic diagram of the optical path of the taillight. The distance between two adjacent light source elements 220 is set to L. When the emission angle α of the light source element 220 is fixed, as L increases, P increases with L, and correspondingly H increases with P, so that the light emitted by multiple light source elements 220 covers the entire end face of the lamp cover 300. Alternatively, when the distance L between two adjacent light source elements 220 is fixed, α increases, P decreases, and correspondingly H decreases with P. In actual production, the values ​​of α, L, P, and H can be adjusted and changed within the range of 90°≥α≥30° and H≥P. Furthermore, the larger H is, the better the uniformity of the taillight.

[0046] The light emission angle α of the light source 220 is greater than 30° and less than 90°, resulting in more concentrated light intensity compared to a traditional 120° floodlight source. Specifically, the light emission angle α concentrates 90% of the light intensity, and the smaller α is, the more concentrated the light intensity. The end face of the lampshade 300 has a uniform light area 310. The spacing between the substrate 210 and the lampshade 300 is arranged according to the principle that the distance H between the substrate 210 and the end face of the lampshade 300 is greater than the overlap distance P between the light emission angles of two adjacent light sources 220. This arrangement achieves both the required light intensity and uniform light distribution, eliminating the need for reflectors, optical lenses, and thick-walled light guides, thus reducing the cost of optical components. However, there is some light leakage on the side of the lampshade 300. Therefore, the sidewall of the lampshade 300 has a light leakage prevention area 320, which acts as a light diffusion layer, reducing light leakage from the light source assembly 200 and effectively mitigating the leakage.

[0047] This taillight utilizes a small-angle light source 220. By adjusting the emission angle of the light source 220 and the distance between the lamp cover 300 and the substrate 210, and by setting a uniform light area 310 on the lamp cover 300, a balance between light emission efficiency and uniformity is achieved. This not only meets the regulatory requirement that the brake light intensity be no less than 40 cd, but also provides suitable uniformity for a better user experience. Furthermore, it increases light emission efficiency and reduces the cost of optical components without the need for a reflector bowl, optical lens, or thick-walled light guide. It eliminates the need for new optical component molds, significantly shortens the development cycle, and reduces the unit price of the finished product. In addition, the lamp cover 300 of this taillight has a uniform light area 310 and a light leakage prevention area 320, which effectively reduces the refraction and reflection of light emitted from the light source 220, equivalent to a light diffusion effect, thus reducing light leakage from the light source 220.

[0048] The structure and shape of the taillights are described in detail below:

[0049] In the optional solution provided by this utility model embodiment, the light source 220 includes an LED bead, which is mounted on the substrate 210, and the light-emitting end of the LED bead is covered with an optical lens cover.

[0050] Specifically, the optical lens cover can be a single unit, with each cover encapsulated on multiple LED chips. Alternatively, the number of optical lens covers can be the same as the number of LED chips, with each chip having its own optical lens cover. In this embodiment, the optical lens cover is made of optical-grade PC (polycarbonate) material, and it is fixed and tightly fitted to the LED chips during the encapsulation stage. "Optical-grade" refers to the high purity of the polycarbonate material, with a light transmittance of approximately 90%, approaching that of glass, and excellent optical uniformity. It also has few internal impurities and defects, meeting the optical performance requirements for manufacturing lenses, optical components, and other optical instruments. Alternatively, the optical lens cover can be made of transparent silicone. Of course, using other high-temperature resistant optical materials for the optical lens cover is also within the scope of protection of this embodiment.

[0051] The light-emitting end cover of the lamp bead is equipped with an optical lens cover to make the light emission angle of the light source 220 less than the traditional 120° floodlight.

[0052] In the optional solutions provided by the embodiments of this utility model, see Figure 3 Multiple LEDs are evenly arranged on the substrate 210.

[0053] Specifically, the multiple light sources 220 can be divided into a rear position lamp area and a brake lamp area; and in this embodiment, the light sources 220 in the rear position lamp area and the light sources 220 in the brake lamp area are controlled independently, so that the rear position lamp area and the brake lamp area can be turned on or off simultaneously or turned on individually. The uniform arrangement of multiple LEDs means that the spacing between two adjacent LEDs is fixed, and the multiple LEDs are evenly arranged on the substrate 210.

[0054] Multiple LED beads are evenly arranged, that is, the distance L between two adjacent light source elements 220 is fixed. The value of the overlap distance P between the light emission angles of two adjacent light source elements 220 can be obtained according to the light emission angle α of the light source element 220, which makes it easier to obtain the value of the distance H between the end face of the substrate 210 and the lamp cover 300.

[0055] In the optional solutions provided by the embodiments of this utility model, see Figure 4 and Figure 5 The light-proof zone 320 includes matte toothed strips or matte frosted texture.

[0056] Specifically, the inner surface of the sidewall of the lampshade 300 is provided with matte toothed strips or matte frosted texture to eliminate stray light and light leakage from side reflections.

[0057] In the optional solution provided by this embodiment of the utility model, the uniform light region 310 includes a grain texture.

[0058] Specifically, the particle texture is provided on the inner wall of the end face of the lampshade 300, forming a 3D texture. Furthermore, in this embodiment, three light-diffusing zones 310 are provided. The lampshade 300 is located above the optical lens cover. The lampshade 300 is red and transparent, used to collect stray light from the light source 220, and to improve light output efficiency through the light-diffusing zones 310 and 320. Preferably, the lampshade 300 is made of red transparent PMMA (polymethyl methacrylate) or red transparent PC (polycarbonate). Alternatively, the lampshade 300 is made of a red semi-transparent material with light-diffusing function; in this case, its semi-transparency forms the light-diffusing zone 310, eliminating the need for a 3D texture.

[0059] 3D textures enable uniform light distribution of the light emitted by the light source 220.

[0060] In the optional solutions provided by the embodiments of this utility model, see Figure 3 The bottom shell 100 is provided with a vent, and a waterproof and breathable membrane 110 is installed at the vent.

[0061] Specifically, the substrate 210 is made of aluminum substrate to reduce the cost of substrate 210, avoid light decay caused by low infrared luminous efficiency and severe heat generation, and ensure the stability of the light source 220 in the rear position lamp area under constant light operation. The bottom shell 100 is made of engineering plastic and is equipped with a waterproof and breathable membrane 110 to balance the air pressure inside and outside the taillight.

[0062] In the optional embodiment of this utility model, the waterproof and breathable membrane 110 is configured as a one-way membrane.

[0063] Specifically, see Figures 8 to 10 The outer wall of the bottom shell 100 is provided with positioning ribs 140 along the outer periphery of the vent hole, and the waterproof and breathable membrane 110 is installed inside the positioning ribs 140.

[0064] When the internal temperature of the taillight rises, the air expands, and water vapor can be discharged through the one-way membrane, eliminating the risk of fogging; conversely, water vapor cannot enter the interior of the taillight.

[0065] In the optional solutions provided by the embodiments of this utility model, see Figure 3 and Figure 8 The bottom shell 100 is provided with a cable outlet 120, through which the wiring of the base plate 210 passes for connection with external devices; the taillight also includes a protective sleeve 400, which is connected to the bottom shell 100 and inserted into the cable outlet 120.

[0066] Specifically, the base shell 100 and the lamp cover 300 are fixed by ultrasonic welding. The cable outlet 120 and the vent are both located on the bottom wall of the base shell 100 and are spaced apart. Furthermore, the protective sleeve 400 is a waterproof rubber sleeve for protecting the cable. Of course, whether the protective sleeve 400 is an onboard waterproof connector or is formed by applying adhesive to the cable outlet 120, should also be within the protection scope of this utility model embodiment.

[0067] A protective sleeve 400 is installed on the bottom shell 100 to ensure the cable outlet is sealed and waterproof.

[0068] In the optional solutions provided by the embodiments of this utility model, see Figure 3 The inner sidewall of the bottom shell 100 is provided with a first snap-fit ​​structure, and the peripheral wall of the base plate 210 is provided with a second snap-fit ​​structure. The first snap-fit ​​structure and the second snap-fit ​​structure are snap-fitted together.

[0069] Specifically, the first snap-fit ​​structure is configured as a positioning protrusion 130, and correspondingly, the second snap-fit ​​structure is configured as a positioning groove 211; the positioning protrusion 130 and the positioning groove 211 snap-fit ​​together. Furthermore, the bottom shell 100 has an open shell structure, with its sidewalls protruding inwards to form the positioning protrusion 130; the peripheral wall of the substrate 210 is recessed inwards to form the positioning groove 211. Furthermore, multiple positioning protrusions 130 and positioning grooves 211 are provided, with multiple positioning protrusions 130 spaced apart circumferentially along the bottom shell 100, and multiple positioning grooves 211 snap-fitting one-to-one with multiple positioning protrusions 130. Alternatively, the first snap-fit ​​structure is configured as a groove structure, located on the inner sidewall of the bottom shell 100 and recessed in a direction away from the center of the bottom shell 100; the second snap-fit ​​structure is configured as a protrusion structure, located on the outer peripheral wall of the substrate 210 and protruding in a direction away from the center of the substrate 210; the groove structure and the protrusion structure snap-fit ​​together.

[0070] The first snap-fit ​​structure and the second snap-fit ​​structure engage to achieve the installation and positioning of the substrate 210, ensuring the installation accuracy of the substrate 210.

[0071] The advantages of taillights are explained in detail below:

[0072] The light source 220 of this taillight has a light emission angle of 30°, 45°, 60° or 90°. Compared with the traditional 120° floodlight source, the light intensity is more concentrated. With the reasonable arrangement of the light source 220 and the distance between the substrate 210 and the end face of the lamp cover 300, the lamp cover 300 has a uniform light area 310, which can achieve both the light intensity required by regulations and uniform light.

[0073] The absence of a reflector bowl, optical lens, and thick-walled light guide increases light output efficiency and reduces the cost of optical structural components. Furthermore, the lampshade 300 has an added light leakage prevention zone 320 on its side to reduce light leakage from the lamp source.

[0074] Red light has low luminous efficiency and high heat generation ratio. The light source 220 in the rear position lamp area has a constant light mode. The substrate 210 is set as an aluminum substrate 210 to effectively dissipate heat.

[0075] The bottom shell 100 is equipped with a one-way film to reduce the risk of fogging caused by overheating inside the taillight.

[0076] Example 2

[0077] The electric vehicle provided in this embodiment includes the taillight described in Embodiment 1, and therefore also possesses all the beneficial effects of Embodiment 1, which will not be repeated here.

[0078] In the optional embodiment of this utility model, the electric vehicle also includes a frame, and the taillight is mounted on the frame.

[0079] Specifically, the taillights are mounted at the rear of the vehicle frame, and the taillights are detachably connected to the vehicle frame; preferably, see [reference needed]. Figure 10 The outer peripheral wall of the taillight's base shell 100 is provided with mounting protrusions 150, and screws pass through the mounting protrusions 150 to connect with the vehicle frame via threads. In this embodiment, multiple mounting protrusions 150 are provided, and the multiple mounting protrusions 150 are spaced apart along the circumference of the base shell 100 to improve the installation stability of the taillight.

[0080] The taillights are mounted at the rear of the chassis, which provides support and fixation for them. The taillights serve as warning lights.

[0081] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0082] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tail light, characterized in that include: The base (100), the light source assembly (200), and the lampshade (300); The bottom shell (100) is connected to the lampshade (300), and the end face of the lampshade (300) has a light-uniforming area (310) and the side wall has a light-leakage prevention area (320). The light source assembly (200) includes a substrate (210) and a plurality of light source elements (220). The substrate (210) is located between the bottom shell (100) and the lampshade (300) and is installed inside the bottom shell (100). The plurality of light source elements (220) are spaced apart and are all installed on the end face of the substrate (210) facing the lampshade (300). The light emission angle of the light source (220) is set to α, 90°≥α≥30°; the distance between the overlapping light emission angles of two adjacent light source (220) is P, and the distance between the end face of the substrate (210) and the lampshade (300) is H, H≥P.

2. The taillight according to claim 1, characterized in that, The light source (220) includes an LED bead, which is mounted on the substrate (210), and the light-emitting end of the LED bead is covered with an optical lens cover.

3. The taillight according to claim 2, characterized in that, The multiple LED beads are evenly arranged on the substrate (210).

4. The taillight according to claim 1, characterized in that, The light-proof zone (320) includes a matte toothed strip or a matte frosted texture.

5. The taillight according to claim 1, characterized in that, The uniform light region (310) includes a grain texture.

6. The taillight according to claim 1, characterized in that, The bottom shell (100) is provided with a vent hole, and a waterproof and breathable membrane (110) is installed at the vent hole.

7. The taillight according to claim 6, characterized in that, The waterproof and breathable membrane (110) is configured as a one-way membrane.

8. The taillight according to claim 1, characterized in that, The bottom shell (100) is provided with a cable outlet (120), and the wiring of the substrate (210) passes through the cable outlet (120) for connection with external devices; The taillight also includes a protective cover (400), which is connected to the bottom shell (100) and inserted into the outlet (120).

9. The taillight according to any one of claims 1-8, characterized in that, The inner wall of the bottom shell (100) is provided with a first snap-fit ​​structure, and the peripheral wall of the substrate (210) is provided with a second snap-fit ​​structure. The first snap-fit ​​structure and the second snap-fit ​​structure are snap-fitted together.

10. An electric vehicle, characterized in that, It includes a frame and a taillight as described in any one of claims 1-9, the taillight being mounted on the frame.

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