Light-emitting sign for vehicle

Abstract

The invention belongs to the technical field of automobiles, and relates to a vehicle light-emitting sign which comprises a circuit board, a light uniformizing plate and a sign board, a vehicle sign pattern is formed on the sign board through cooperation of a shading area and a light-transmitting area, a light-emitting source is arranged on the circuit board, and incident light of the light-emitting source points to the light uniformizing plate. Incident light of the light emitting source can enter the light uniformizing plate in the thickness direction of the light uniformizing plate, a light reflecting cone is arranged on the surface, opposite to the light emitting source, of the light uniformizing plate, and the light reflecting cone and the light emitting source are arranged correspondingly. The surface of the light reflecting cone is subjected to surface treatment so as to reflect incident light of the light emitting source to the peripheral area of the light reflecting cone in the plate surface direction of the light homogenizing plate, and light scattering concave points are arranged on the surface, facing the light emitting source, of the light homogenizing plate. The problem of convenient manufacturing is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobiles, and in particular relates to a vehicle luminous sign. Background Art

[0002] There is a kind of luminous sign used on vehicles, which not only increases the aesthetics, but also makes it easier to identify at night, and can even be used for lighting. For example, Chinese patent document "CN105189214A" discloses such a structure. However, its processing requirements are relatively high, and because the LED embedded in the light guide is side-emitting, the layout of the LED light, such as the direction, needs to be calculated, and the design requirements are relatively high. Summary of the invention

[0003] The purpose of the present invention is to provide a vehicle luminous sign which solves the problem of how to make it more convenient to manufacture.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: The present invention provides a vehicle luminous sign, comprising a circuit board, a light-diffusing plate and a sign board, wherein a vehicle sign pattern is formed on the sign board by the cooperation of a shading area and a light-transmitting area, a light source is arranged on the circuit board, incident light from the light source points to the light-diffusing plate, and the incident light from the light source can be incident into the light-diffusing plate along the thickness direction of the light-diffusing plate, a reflective cone is arranged on the surface of the light-diffusing plate facing away from the light source, the reflective cone is arranged corresponding to the light source, the surface of the reflective cone is surface-treated so as to reflect the incident light from the light source along the board surface direction of the light-diffusing plate to the outer area of ​​the reflective cone, and a scattered light concave point is arranged on the surface of the light-diffusing plate facing the light source.

[0005] Preferably, the shape of the reflective cone matches the shape of the vehicle logo pattern.

[0006] Furthermore, the shape of the reflective cone is a circular cone or an elliptical cone, corresponding to the circular or elliptical shape of the vehicle logo pattern.

[0007] Preferably, the astigmatism concave point close to the reflective cone is smaller than the astigmatism concave point far from the reflective cone.

[0008] Preferably, the surface of the light-diffusing plate facing the light source is a flat surface.

[0009] Preferably, the light source and the reflective cone are aligned with the light shielding area on the sign plate.

[0010] Preferably, there are more than two reflective cones, which are symmetrically distributed on the light-dispersing plate.

[0011] Preferably, the surface treatment includes one of coating a reflective layer, polishing the surface, and attaching a reflective mirror.

[0012] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The vehicle luminous sign of the present invention has a reflective cone on the light-diffusing plate. When the light from the light source hits the bottom surface of the reflective cone, the bottom surface of the reflective cone reflects the light into the light-diffusing plate. When the light source and the reflective cone are arranged in this way, the light source can be directed toward the light-diffusing plate, and the manufacturing process is faster. Moreover, the reflective cone can reflect light in all directions, and the light distribution is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings: Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of a vehicle luminous sign of the present invention; Figure 2 yes Figure 1 A top view of Figure 3 yes Figure 2 AA section view; Figure 4 yes Figure 3 A magnified view of point B; The reference numerals are described as follows: 1. Circuit board; 11. Light source; 2. Light-diffusing plate; 21. Reflection cone; 22. Scattering pit; 3. Marking plate; 31. Shading area; 32. Translucent area. DETAILED DESCRIPTION

[0014] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] like Figure 1 The vehicle luminous sign shown in the figure has a light-shielding area 31 and a light-transmitting area 32 on the sign plate 3. The light-transmitting area 32 can be illuminated, and the vehicle sign pattern is formed by the cooperation of the light-shielding area 31 and the light-transmitting area 32. This example only takes the Volkswagen vehicle sign pattern as an example. With the cooperation of the light-shielding area 31 and the light-transmitting area 32 in other shapes, various vehicle sign patterns can be formed.

[0016] like Figure 2 and Figure 3As shown, the vehicle luminous sign includes a circuit board 1, a light diffuser 2 and a sign board 3 arranged from bottom to top (the top and bottom do not limit the state of the product when in use, but are only for the convenience of describing the embodiment). Among them, a light source 11 is arranged on the circuit board 1, and the light source 11 is an LED lamp bead in this example. The light diffuser 2 reflects and disperses the light from the light source 11, so that the light evenly illuminates the light diffuser 2. The light-transmitting area 32 in the sign board 3 receives the light passing through the light diffuser 2 and is illuminated.

[0017] like Figure 3 and Figure 4 As shown, a reflective cone 21 is provided on the surface of the light diffuser 2 facing away from the light source 11. The bottom surface of the reflective cone 21 is surface treated, such as coating a reflective layer, polishing the surface, or attaching a reflector, so that the bottom surface of the reflective cone 21 can better reflect the light emitted from the top of the light source 11. The light source 11 is a top-emitting LED lamp bead. The light emitted is incident into the light diffuser 2 along the thickness direction of the light diffuser 2, and then reflected by the bottom surface of the reflective cone 21. The reflected light is irradiated along the surface direction of the light diffuser 2, as shown in FIG. Figure 4 As indicated by the arrow.

[0018] The surface of the light-diffusing plate 2 facing the light source 11 is a flat surface, which is beneficial to reducing the volume of the entire component and making the manufacturing process more efficient.

[0019] In this example, two light sources 11 are provided, and the reflective cones 21 are provided corresponding to the light sources 11, and are aligned in position and correspond in number. The number of light sources 11 and the number of corresponding reflective cones 21 are not limited, and can be at least one, or more. In this example, the two light sources 11 are symmetrically arranged. If there is only one light source 11, it can be arranged in the center of the circuit board 1. If there are multiple light sources 11, evenly distributing the light sources 11 is conducive to improving light uniformity.

[0020] The light source 11 and the corresponding reflective cone 21 are aligned with the shading area 31 on the sign plate 3 , so that the shading area 31 blocks the part with stronger light, which is beneficial to improve the light uniformity of the light-transmitting area 32 .

[0021] The reflective cone 21 in this example is in the shape of a cone, which corresponds to the disc shape of the sign board 3. If the shape of the sign board 3 is an ellipse, then the reflective cone 21 is set as an ellipse to make the light uniform across the entire surface of the sign board 3. In short, the shape of the reflective cone 21 is adapted to the shape of the sign board 3.

[0022] like Figure 4The surface of the light scattering plate 2 facing the light source 11 is provided with a plurality of light scattering concave points 22. The light scattering concave points 22 are grooves carved inward from the surface of the light scattering plate 2, and the bottom surface of the groove is a part of the spherical surface. The light scattering concave points 22 can reflect light toward the direction of the sign plate 3, increase the light intensity of the light-transmitting area 32 in the sign plate 3, and the light scattering concave points 22 can also increase the light uniformity. It should be noted that Figure 4 The astigmatism pits 22 shown in the figure are magnified effects and are actually very small micro-dots.

[0023] In this example, if Figure 4 It is shown that the size of the astigmatism concave point 22 far away from the reflective cone 21 is larger than the size of the astigmatism concave point 22 close to the reflective cone 21. In this way, a large point reflection is used in the area with weak light to enhance the reflected light intensity, and a small point reflection is used in the area with strong light to reduce the reflected light intensity, thereby further improving the light uniformity of the light-transmitting area 32.

[0024] To sum up, the vehicle luminous sign of this example uses the reflective cone 21 to reflect the light incident from the light source 11, so that the light is dispersed in the light-diffusing plate 2, and assisted by the light-scattering concave points 22 to illuminate the light-transmitting area 32 in the sign plate 3, while the shading area 31 does not emit light. The cooperation between the shading area 31 and the light-transmitting area 32 allows the sign plate 3 to display the vehicle logo pattern at night, which plays a role in aesthetics, night identification or lighting.

[0025] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle luminous sign, characterized in that: The invention comprises a circuit board (1), a light-diffusing plate (2) and a logo plate (3); a vehicle logo pattern is formed on the logo plate (3) by the cooperation of a light-shielding area (31) and a light-transmitting area (32); a light source (11) is arranged on the circuit board (1); incident light from the light source (11) is directed toward the light-diffusing plate (2); the incident light from the light source (11) can be incident into the light-diffusing plate (2) along the thickness direction of the light-diffusing plate (2); a reflective cone (21) is arranged on the surface of the light-diffusing plate (2) facing away from the light source (11); the reflective cone (21) is arranged corresponding to the light source (11); the surface of the reflective cone (21) is surface-treated so as to reflect the incident light from the light source (11) along the plate surface direction of the light-diffusing plate (2) to the peripheral area of ​​the reflective cone (21); and a scattered light concave point (22) is arranged on the surface of the light-diffusing plate (2) facing the light source (11).

2. The vehicle luminous sign according to claim 1, characterized in that: The shape of the reflective cone (21) matches the shape of the vehicle logo pattern.

3. The vehicle luminous sign according to claim 2, characterized in that: The reflective cone (21) is in the shape of a circular cone or an elliptical cone, corresponding to the circular or elliptical shape of the vehicle logo pattern.

4. The vehicle luminous sign according to claim 1, characterized in that: The astigmatism concave point (22) close to the reflective cone (21) is smaller than the astigmatism concave point (22) far from the reflective cone (21).

5. The vehicle luminous sign according to claim 1, characterized in that: The surface of the light homogenizing plate (2) facing the light source (11) is a flat surface.

6. The vehicle luminous sign according to claim 1, characterized in that: The light source (11) and the reflective cone (21) are aligned with the light shielding area (31) on the sign plate (3).

7. The vehicle luminous sign according to claim 1, characterized in that: More than two reflective cones (21) are provided and symmetrically distributed on the light homogenizing plate (2).

8. The vehicle luminous sign according to claim 1, characterized in that: The surface treatment includes coating a reflective layer, polishing the surface, and attaching a reflective mirror.

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