A type of taillight

Abstract

This invention discloses a taillight, including a light guide and a light-emitting component. The light guide includes a first light cavity and a first light-emitting surface. The first light cavity includes a first incident surface, which is arc-shaped, thereby improving the utilization rate of light and increasing the brightness of light. Furthermore, the first incident surface is provided with a plurality of uniformly distributed first wave points, which are arc-shaped, so that each first wave point forms an independent light spot or light patch, thereby forming a light patch distribution effect with a sense of layering or depth, and creating a unique lighting effect.

Description

Technical Field

[0001] This invention relates to the field of vehicle lighting technology, and in particular to a taillight. Background Technology

[0002] Currently, most bicycles, electric vehicles, and electric scooters are equipped with taillights, which use LED light sources to form a surface-shaped light-emitting area. However, with the increasing market demand, consumers are pursuing more personalized and diverse lighting effects. Simple surface-shaped light-emitting effects are difficult to meet consumer needs. Furthermore, existing taillights require multiple light sources to achieve rich lighting effects, which is costly. Summary of the Invention

[0003] The purpose of this invention is to provide a taillight in which the first incident surface of the light guide is arc-shaped, which can improve the utilization rate of light and increase the brightness of light. Furthermore, it is provided with first wave points, so that each first wave point forms an independent light spot or light patch, thereby forming a light patch distribution effect with a sense of layering or depth, and creating a unique lighting effect.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A taillight, comprising a light guide and a light-emitting component;

[0006] The light guide includes a first optical cavity and a first light-emitting surface;

[0007] The first optical cavity includes a first incident surface, which is disposed opposite to the first light-emitting surface. The first incident surface has an arc-shaped surface that convexes away from the first light-emitting surface, and the first incident surface is provided with a plurality of uniformly distributed first wave points.

[0008] The first wave point has a convex arc shape that protrudes away from the first light-emitting surface;

[0009] The light-emitting component is located on the side of the first incident surface that is away from the first light-emitting surface.

[0010] In some embodiments, the first optical cavity further includes a second incident surface;

[0011] The light guide also includes a second optical cavity, which is arranged around the first optical cavity;

[0012] The second optical cavity is provided with a first cavity wall, which is located close to the first optical cavity;

[0013] The first cavity wall is inclined towards the first optical cavity in a direction away from the first light-emitting surface;

[0014] The first cavity wall is provided with multiple uniformly distributed second wave points;

[0015] The second wave point has a convex arc shape that protrudes away from the first light-emitting surface.

[0016] In some embodiments, the tilt angle β of the first cavity wall is between 25 degrees and 40 degrees.

[0017] In some embodiments, the second incident surface is tilted toward the second optical cavity in a direction away from the first light-emitting surface.

[0018] In some embodiments, the tilt angle θ of the second incident surface is between 13 and 15 degrees.

[0019] In some embodiments, the light guide further includes a second light-emitting surface;

[0020] The second optical cavity is provided with a second cavity wall, which is arranged opposite to the second light-emitting surface.

[0021] In some embodiments, the light-emitting component includes a circuit board with LED beads positioned corresponding to the first optical cavity.

[0022] In some implementations, the circuit board does not have LED beads at the position corresponding to the second optical cavity.

[0023] In some embodiments, a back cover is also included, the inner cavity of which is provided with positioning posts, and the circuit board of the light-emitting component is provided with positioning holes that cooperate with it.

[0024] The back cover and the light guide are connected by ultrasonic welding;

[0025] The back cover also houses a battery.

[0026] In some embodiments, a front cover is also included, which is fastened to the light guide;

[0027] The front cover separates the first light-emitting surface from the second light-emitting surface.

[0028] The beneficial effects of the present invention are: the first incident surface of the light guide is arc-shaped, which can improve the utilization rate of light and increase the brightness of light;

[0029] Furthermore, a first wave point is set, so that each first wave point forms an independent light spot or light patch, thereby creating a light patch distribution effect with a sense of layering or depth, forming a unique lighting effect;

[0030] Furthermore, the first cavity wall of the second light cavity is provided with a second wave point, so that each second wave point forms an independent light point or light spot, thereby forming a light spot distribution effect with a sense of layering or depth, creating a unique lighting effect, and combining with the first wave point to further enhance the lighting effect;

[0031] Finally, LED beads are installed at the position of the first light cavity. The light from the LED beads can be directed to the first and second light cavities through the light guide structure of the light guide component, so that it can be emitted from the first and second light-emitting surfaces to form a multi-faceted light-emitting effect, and it is beneficial to save the number of LED beads and save costs. Attached Figure Description

[0032] Figure 1 This is a structural diagram of a taillight according to the present invention;

[0033] Figure 2 This is a front view of a taillight according to the present invention;

[0034] Figure 3 for Figure 2 A-A cross-sectional view;

[0035] Figure 4 for Figure 2 B-B cross-sectional view;

[0036] Figure 5 This is an exploded view of a taillight according to the present invention;

[0037] Figure 6 This is a structural diagram of the light guide component of the present invention;

[0038] Figure 7 This is another view of the structure of the light guide component of the present invention;

[0039] Figure 8 This is a cross-sectional view of the light guide component of the present invention;

[0040] Figure 9 This is a cross-sectional view of the light guide component of the present invention;

[0041] Figure 10 This is a schematic diagram of the first optical path of the light guide component of the present invention;

[0042] Figure 11 This is a schematic diagram of the second optical path of the light guide component of the present invention;

[0043] Figure 12 This is a schematic diagram of the third optical path of the light guide component of the present invention.

[0044] Wherein: 1 - back cover; 11 - positioning post; 2 - battery; 3 - light-emitting component; 31 - circuit board; 311 - positioning hole; 32 - LED lamp bead; 4 - light guide; 41 - first light cavity; 411 - first incident surface; 410 - first spot; 412 - second incident surface; 42 - second light cavity; 421 - first cavity wall; 420 - second spot; 422 - second cavity wall; 43 - protrusion; 4a - first light-emitting surface; 4b - second light-emitting surface; 5 - front cover. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings.

[0046] A taillight that can be applied to electric bicycles, electric vehicles, and electric scooters.

[0047] refer to Figures 1 to 12 The taillight includes a light guide 4 and a light-emitting component 3;

[0048] refer to Figure 8 The light guide 4 includes a first light cavity 41 and a first light emitting surface 4a;

[0049] The first optical cavity 41 includes a first incident surface 411, which is disposed opposite to the first light-emitting surface 4a. The first incident surface 411 has an arc-shaped protrusion in a direction away from the first light-emitting surface 4a. The first incident surface 411 is provided with a plurality of uniformly distributed first wave points 410.

[0050] The first wave point 410 has an arc-shaped protrusion in a direction away from the first light-emitting surface 4a;

[0051] The light-emitting component 3 is located on the side of the first incident surface 411 that is away from the first light-emitting surface 4a.

[0052] Thus, the light from the light-emitting component 3 illuminates the first incident surface 411 and then exits from the first light-emitting surface 4a. The first incident surface 411 is arc-shaped, which allows the light to be focused onto the first light-emitting surface 4a with a certain light-concentrating effect, thereby improving the utilization rate of the light and increasing the brightness of the light. Furthermore, the first incident surface 411 is provided with multiple evenly distributed first wave points 410. The first wave points 410 have a light-concentrating effect, that is, a local light-concentrating effect, so that each first wave point 410 forms an independent light spot or light patch, thereby forming a light patch distribution effect with a sense of layering or depth, and forming a unique lighting effect.

[0053] The first light-emitting surface 4a can be flat or curved. The light guide 4 can be made of transparent materials such as PC, PMMA, or glass.

[0054] refer to Figure 8 The first optical cavity 41 also includes a second incident surface 412, that is, the sidewall of the first optical cavity 41 forms the second incident surface 412;

[0055] The light guide 4 also includes a second light cavity 42, which is arranged around the first light cavity 41, thereby forming an annular protrusion 43 between the first light cavity 41 and the second light cavity 42.

[0056] The second optical cavity 42 is provided with a first cavity wall 421, which is disposed close to the first optical cavity 41;

[0057] The first cavity wall 421 is inclined in a direction that gradually approaches the first optical cavity 41 away from the first light-emitting surface 4a;

[0058] The first cavity wall 421 is provided with multiple uniformly distributed second wave points 420;

[0059] The second wave point 420 has an arc-shaped shape that bulges out in a direction away from the first light-emitting surface 4a.

[0060] Therefore, some of the light from the light-emitting component 3 will illuminate the second incident surface 412, and then be reflected by the first cavity wall 421, and finally emitted from the first light-emitting surface 4a. The first cavity wall 421 is inclined to facilitate the light to be directed towards the first light-emitting surface 4a. Furthermore, the first cavity wall 421 is provided with a second spot 420, which has a light-focusing effect, that is, a local light-focusing effect, so that each first spot 410 forms an independent light spot or light patch, thereby forming a light patch distribution effect with a sense of layering or depth.

[0061] It can be seen that the combination of the first incident surface 411 and the first cavity wall 421 makes the first light-emitting surface 4a form a central light-emitting area and an edge light-emitting area. Both the central light-emitting area and the edge light-emitting area form a layered or deep light spot distribution effect due to the setting of the polka dots, forming a unique lighting effect overall.

[0062] Furthermore, the first point 410 of the first incident surface 411 has two light guiding functions. The first function is to direct part of the light to the first light-emitting surface 4a in a focused manner, and the second function is to reflect part of the light to the second incident surface 412 in a diffused manner, so that part of the light is directed to the second incident surface 412 more evenly, thereby improving the uniformity of the light.

[0063] refer to Figure 9 The tilt angle β of the first cavity wall 421 is between 25 degrees and 40 degrees, which allows light to be better directed toward the first light-emitting surface 4a and to create a certain sense of layering or depth in the lighting effect.

[0064] refer to Figure 8 and Figure 9 The second incident surface 412 is inclined and gradually approaches the second optical cavity 42 in a direction away from the first light-emitting surface 4a. The inclined second incident surface 412 can better receive the light from the light-emitting component 3. The light source of the light-emitting component 3 has a certain beam angle. The inclined first incident surface 411, in conjunction with the corresponding beam angle of the light source, helps to improve the incident rate of light and improve the utilization rate of light.

[0065] The tilt angle θ of the second incident surface 412 is between 13 and 15 degrees.

[0066] refer to Figure 8The light guide 4 also includes a second light-emitting surface 4b. The side of the light guide 4 forms the second light-emitting surface 4b. The first light-emitting surface 4a and the second light-emitting surface 4b are combined to form two light-emitting surfaces, so that the status of the taillight can be observed from the rear and side of the taillight, improving safety and creating a unique lighting effect.

[0067] The second optical cavity 42 is provided with a second cavity wall 422, which is arranged opposite to the second light-emitting surface 4b. Thus, after part of the light shines on the second wave point 420 of the first cavity wall 421, the light passes through the second wave point 420, then shines on the second cavity wall 422, and finally exits from the second light-emitting surface 4b.

[0068] Furthermore, the second light point 420 is equipped with two light guiding functions. The first function is to focus some of the light onto the first light-emitting surface 4a, and the second function is to diffuse some of the light onto the second cavity wall 422, so that some of the light is more evenly directed onto the second cavity wall 422, and finally more evenly directed onto the second light-emitting surface 4b, thereby improving the uniformity of the light.

[0069] To further explain, the second light-emitting surface 4b can be a planar, inclined, or arc-shaped surface, and the corresponding second cavity wall 422 can be a planar, inclined, or arc-shaped surface.

[0070] refer to Figures 3 to 5 The light-emitting component 3 includes a circuit board 31, and LED beads 32 are provided on the circuit board 31 at the position corresponding to the first light cavity 41.

[0071] The circuit board 31 may not have LED beads 32 at the position corresponding to the second light cavity 42. Through the light guiding structure of the light guide 4, light can enter the second light cavity 42 from the first light cavity 41, thereby reducing the number of LED beads 32 and saving costs.

[0072] As can be seen from the above, the light-emitting component 3 can form three light-guiding optical paths;

[0073] refer to Figure 10 The first optical path: part of the light rays illuminate the first incident surface 411 and then shine on the first emitting surface 4a;

[0074] refer to Figure 11 The second optical path: some light rays illuminate the second incident surface 412, and then the first cavity wall 421 reflects the light rays to the first light-emitting surface 4a; of course, the first incident surface 411 will also reflect some light rays to the second incident surface 412.

[0075] refer to Figure 12 The third optical path: part of the light rays illuminate the second incident surface 412, then pass through the first cavity wall 421, then shine on the second cavity wall 422, and finally shine on the second light-emitting surface 4b;

[0076] It can be seen that a light source at one or the same location forms two light-emitting surfaces through multiple light-guiding paths, which helps to improve the utilization rate of light and create a unique lighting effect.

[0077] refer to Figure 1 and Figure 5 The taillight also includes a rear cover 1, the inner cavity of the rear cover 1 is provided with a positioning post 11, the circuit board 31 of the light-emitting component 3 is provided with a positioning hole 311 that cooperates with it, and the light-emitting component 3 is assembled and fixed through the structure of the positioning post 11 and the positioning hole 311.

[0078] refer to Figure 3 and Figure 4 The back cover 1 and the light guide 4 are connected by ultrasonic welding. Ultrasonic welding is beneficial for saving assembly structure, and ultrasonic welding is firm and has good sealing performance.

[0079] refer to Figure 3 and Figure 5 The inner cavity of the back cover 1 also houses a battery 2. The battery 2 provides power to the light-emitting component 3. The battery 2 can be attached to the back cover 1 with double-sided adhesive. The back cover 1 also has a USB interface for charging or powering and a switch button.

[0080] refer to Figure 1 and Figure 5 The taillight also includes a front cover 5, which can be fastened to the light guide 4. The front cover 5 may have a protruding buckle, and the light guide 4 may have a matching buckle groove. The fastening structure facilitates assembly.

[0081] The front cover 5 separates the first light-emitting surface 4a from the second light-emitting surface 4b, so that the first light-emitting surface 4a and the second light-emitting surface 4b do not cross-contaminate, and each forms an independent light shape and effect. Furthermore, the combination of the two light-emitting surfaces can create a unique lighting effect.

[0082] The above description only discloses some embodiments of the present invention. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the invention.

Claims

1. A tail light, characterized in that The light guide piece (4) and the light emitting assembly (3) are included. The light guide piece (4) includes a first light cavity (41) and a first light exit surface (4a); the first light exit surface (4a) is planar. The first light cavity (41) includes a first incident surface (411) which is oppositely arranged with the first light exit surface (4a); the first incident surface (411) is in the shape of a convex surface which protrudes away from the first light exit surface (4a); and the first incident surface (411) is provided with a plurality of first wave points (410) which are uniformly distributed. The first wave points (410) are in the shape of a convex surface which protrudes away from the first light exit surface (4a). The light emitting assembly (3) is located on the side of the first incident surface (411) which is away from the first light exit surface (4a). The first light cavity (41) further includes a second incident surface (412). The light guide piece (4) further includes a second light cavity (42) which is arranged around the first light cavity (41). The second light cavity (42) is provided with a first cavity wall (421) which is arranged close to the first light cavity (41). The first cavity wall (421) is arranged in an inclined manner which gradually approaches the first light cavity (41) in a direction away from the first light exit surface (4a). The first cavity wall (421) is provided with a plurality of second wave points (420) which are uniformly distributed. The second wave points (420) are in the shape of a convex surface which protrudes away from the first light exit surface (4a). The inclination angle (β) of the first cavity wall (421) is between 25 degrees and 40 degrees. The inclination angle (θ) of the second incident surface (412) is between 13 degrees and 15 degrees. The light emitting assembly (3) includes a circuit board (31) which is provided with LED lamp beads (32) at positions corresponding to the first light cavity (41); and the circuit board (31) is not provided with LED lamp beads (32) at positions corresponding to the second light cavity (42).

2. The taillight of claim 1, wherein The second incident surface (412) is arranged in an inclined manner which gradually approaches the second light cavity (42) in a direction away from the first light exit surface (4a).

3. The taillight of claim 1, wherein The light guide piece (4) further includes a second light exit surface (4b). The second light cavity (42) is provided with a second cavity wall (422) which is oppositely arranged with the second light exit surface (4b).

4. The taillight of claim 1, wherein A rear cover (1) is further included, the inner cavity of the rear cover (1) is provided with a positioning column (11), and the circuit board (31) of the light emitting assembly (3) is provided with a positioning hole (311) which cooperates with the positioning column (11). The rear cover (1) and the light guide piece (4) are connected through ultrasonic welding. The inner cavity of the rear cover (1) is further provided with a storage battery (2).

5. The taillight of claim 1 wherein, A front cover (5) is further included, and the front cover (5) is buckled to the light guide piece (4). The front cover (5) separates the first light exit surface (4a) and the second light exit surface (4b).

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