CN111197728A

CN111197728A - A signal lamp with a symmetrical light guide structure

Info

Publication number: CN111197728A
Application number: CN201811364213.7A
Authority: CN
Inventors: 张颖
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2018-11-16
Filing date: 2018-11-16
Publication date: 2020-05-26

Abstract

The invention relates to a signal lamp with a symmetrical light guide structure, which comprises an outer lamp cover, an inner lamp cover, a decorative ring, a bracket, a light guide and an LED light source, wherein the two sides of the central symmetrical plane are symmetrical. The light guide is arranged between the inner lampshade and the bracket, the inner lampshade is made of a diffusible material, the light guide is light entering from two ends, and the light guide can be a straight light guide or a long light guide with a certain radian. Light enters from two ends, and the symmetrical light guide structure can solve the problem of front and back brightness consistency of the long light guide, so that the application of the light guide in the field of car lamps is improved. The invention has simple structure, can realize the integral uniformity effect of the light-emitting surface and improve the design efficiency of longer light guide.

Description

Signal lamp with symmetrical light guide structure

Technical Field

The invention belongs to the technical field of automobile illumination, and particularly relates to a signal lamp with a symmetrical light guide structure.

Background

Along with the development of economy, the popularization rate of automobile families is higher and higher, people not only realize the requirement of riding instead of walk, but also pay more attention to the appearance and shape of automobiles. At present, the style of car lights is changeable, wherein the light-emitting surface breaks through the tradition gradually, pursues longer narrower visual effect, appears many run-through high-order stop lamps and tail lamps. The reflective LED lamp needs more LEDs, and has the effect of granular sensation when being lighted. At present, the light guide structure is widely used in the field of automobile illumination, the number of LEDs can be reduced, the cost of the whole lamp is reduced, the granular sensation of the LEDs can be well eliminated, the uniformity of the whole light emitting surface is realized, and the light guide structure is more skillful. However, light rays propagating inside the light guide become weaker and weaker with increasing distance, and for the existing long light guide, the light guide structure with light entering from one end is difficult to realize the brightness consistency between the tail part and the front end. And light enters from two ends, and the symmetrical light guide structure can solve the problem of the consistency of the front and rear brightness of the long light guide, thereby improving the application of the light guide in the field of car lamps.

Disclosure of Invention

The invention provides a signal lamp with a symmetrical light guide structure, aiming at solving the problems that the signal lamp with the symmetrical light guide structure is simple in structure and low in manufacturing cost, the lighting uniformity of a long light guide can be realized, and the lighting uniformity effect of a narrow and long light emitting surface is solved.

The utility model provides a signal lamp with symmetry formula light guide structure, includes the casing, the casing in by interior support, light guide, interior lamp shade and the outer lamp shade of having set gradually outside to, the PCB board sets up perpendicularly the both ends of light guide, be equipped with the light source on the PCB board, the light guide with the PCB board is symmetrical about the central symmetry plane, the light guide is close to the one end of support and is equipped with the light guide tooth.

Preferably, in order to achieve the uniformity of light, the light guide teeth gradually change from low to high and from sparse to dense from two ends to the central symmetry plane.

Further, in order to better enlarge the refraction range, the light source is better utilized, and the angles A and B formed by the two inclined edges of the light guide teeth and the tooth base surface are both 0-45 degrees.

Preferably, the light source is 1 or more LEDs.

Furthermore, in order to realize the light-emitting uniformity under the condition that the light source is not shielded, the two ends of the light guide are provided with convex blocks, the convex blocks are provided with tooth shapes, one end, close to the inner lampshade, of the light guide is provided with a stripe structure, and the tooth shapes on the convex blocks reflect light to the two ends of the inner lampshade completely to realize the uniformity of the light.

Preferably, the light is diffused up and down to achieve uniformity of the light, and the height of the stripe structure is 0.1mm to 1 mm.

Further, the inner lampshade is made of scattering materials, such as: DF23, DF22 and the like, wherein the surface of the inner lampshade is a plane or has a diffused pattern structure, so that the light diffusion rate is improved, and the light brightness is increased.

Has the advantages that: the light guide of the invention has light entering from two ends and symmetrical from two ends of the central position, thus the length of uniformity to be considered of each end LED is half of the length of the original light guide, the height and density of the optical teeth at the front end of the light guide are reduced, the light leakage of light at the front end is reduced, enough light is ensured to ensure the central brightness when reaching the central position, the problem of dark center of the long light guide is solved, and the lighting uniformity of the long light guide is realized.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a convex tooth structure of a light guide tooth according to the present invention;

FIG. 5 is a concave tooth structure of a light guide tooth according to the present invention;

FIG. 6 is an enlarged view of the structure of one end of the light guide of the present invention;

1. a light guide; 2. a housing; 3. an inner lampshade; 4. a support; 5. a PCB board; 6. a central symmetry plane; 7. an LED light source; 8. an outer lamp cover; 9. a light guide tooth; 10. and (4) a bump.

Detailed Description

As shown in fig. 1, a signal lamp with symmetrical light guide structure, includes casing 2, including casing 2, casing 2 in by interior support 4, light guide 1, interior lamp shade 3 and the outer lamp shade 8 of having set gradually outward, PCB board 5 sets up perpendicularly the both ends of light guide 1, the light source be 1 or many LEDs, light guide 1 with PCB board 5 is symmetrical about central symmetry plane 6, the one end that light guide 1 is close to support 4 is equipped with light guide tooth 9. In order to realize the light-emitting uniformity under the condition that a light source is not shielded, the two ends of the light guide 1 are provided with the convex blocks 10, the convex blocks 10 are provided with tooth shapes, the tooth shapes on the convex blocks 10 totally reflect light to the two ends of the inner lampshade, one end of the light guide 1 close to the inner lampshade 3 is provided with a stripe structure, and the arch height of the stripe structure is 0.1-1 mm. As shown in fig. 4, the light guide teeth 9 gradually change from low to high and from sparse to dense from two ends to the central symmetry plane 6. In order to increase the refraction range and to make better use of the light source, the light-guiding teeth 9 are convex or concave teeth, as shown in fig. 5 and 6, the angles a and B formed by the two oblique sides of the convex or concave teeth and the tooth base surface are both 0 to 45 °, and the angles a and B formed by the two oblique sides of each convex or concave tooth and the tooth base surface are identical and symmetrical about the central symmetry plane 6. The inner lampshade 3 is made of scattering materials, such as: DF23, DF22 and the like, the surface of the inner lampshade 3 is a plane or has a diffused pattern structure, the light diffusion rate is improved, and the light brightness is increased.

Claims

1. The utility model provides a signal lamp with symmetry formula light guide structure, includes casing (2), casing (2) in by interior support (4), light guide (1), interior lamp shade (3) and outer lamp shade (8) have set gradually outward, PCB board (5) set up perpendicularly the both ends of light guide (1), be equipped with the light source on PCB board (5), light guide (1) with PCB board (5) are symmetrical about central symmetry plane (6), the one end that light guide (1) is close to support (4) is equipped with light guide tooth (9).

2. A signal lamp with a symmetrical light-guiding structure as claimed in claim 1, wherein: the light guide teeth (9) gradually change from low to high and from sparse to dense from two ends to the central symmetrical plane (6).

3. A signal lamp with a symmetrical light-guiding structure as claimed in claim 2, wherein: the angles A and B formed by the two bevel edges of the light guide tooth (9) and the tooth base surface are both 0-45 degrees.

4. A signal lamp with a symmetrical light-guiding structure as claimed in claim 1, wherein: the light source is 1 or more LEDs.

5. A signal lamp with a symmetrical light-guiding structure as claimed in claim 1, wherein: the LED lamp is characterized in that protruding blocks (10) are arranged at two ends of the light guide (1), tooth shapes are arranged on the protruding blocks (10), and a stripe structure is arranged on one side, close to the inner lampshade (3), of the light guide (1).

6. A signal lamp with a symmetrical light-guiding structure as claimed in claim 5, wherein: the arch height of the stripe structure is 0.1 mm-1 mm.

7. A signal lamp with a symmetrical light-guiding structure as claimed in claim 1, wherein: the inner lampshade (3) is made of scattering materials, and the surface of the inner lampshade (3) is a plane or has a diffused pattern structure.