CN115289432A - Rear lamp and brake lamp multiplexing light-emitting structure capable of achieving uniform lighting effect - Google Patents

Abstract

The invention provides a multiplexed light-emitting structure for a rear position light and a brake light to achieve uniform lighting effect, comprising an LED light source, a circuit board, a radiator, a reflector, and an additional mask; the LED light source is mounted on the circuit board, and the circuit board is fixed On the radiator, the radiator is fixed on the reflector, and the reflector is fixed on the additional mask; the LED light source is a point light source, and a plurality of reflection areas are arranged in the middle of the reflector, and each reflection area is provided with a rectangular light distribution The accessory mask includes a light-emitting area and a non-light-emitting area, and the non-light-emitting area is on the upper and lower sides of the light-emitting area. Scattering materials constantly refract, reflect and scatter in both media. The present invention utilizes a reflector and an additional mask to realize the double diffusion of the light source, so that the light can be emitted uniformly, and the effect of uniform light emission at different angles is achieved.

Description

A multiplexing light-emitting structure for rear position lights and brake lights to achieve uniform lighting effects

technical field

The invention belongs to the technical field of automobile lamp structures, and in particular relates to a rear position lamp and brake lamp multiplexing light emitting structure that realizes a uniform lighting effect.

Background technique

The function of the rear position light adopts the LED light source and the optical scheme of the uniform scattering mask, which can realize the lighting effect of uniform light from all angles. The function of the brake light generally adopts the form of LED light source plus direct reflection mirror or transparent additional mask or thick-walled light guide. The light is diffused through the direct light of the reflector, the additional mask and the light distribution pattern on the surface of the thick-walled light guide, so that the light-emitting area changes. Evenly. However, limited by the processing precision of the mold, the light distribution pattern can be about 0.5*0.5mm~1*1mm in the extreme case, and its diffusion effect on light is limited, and there will be different brightness states when viewed from different angles, and it is impossible to achieve uniformity under different angles. The lighting effect, the effect presented after lighting has light and dark changes.

Contents of the invention

The present invention aims to solve the problem of light and dark changes in the effect of the brake lights after they are lit, so as to provide a rear position light and brake light multiplexing light-emitting structure that achieves a uniform lighting effect. To make the brake lights achieve the same uniform lighting effect as the rear position lights.

In order to solve the above-mentioned problems, the present invention proposes a rear position lamp and brake lamp multiplexing light emitting structure that realizes uniform lighting effect, including LED light sources, circuit boards, radiators, reflectors, and additional masks; LED light sources are installed on the line On the board, the circuit board is fixed to the radiator, the radiator is fixed to the reflector, and the reflector is fixed to the additional mask; the LED light source is a point light source, and a plurality of reflection areas are set in the middle of the reflector, and each reflector The area is provided with a rectangular light distribution pattern; the accessory mask includes a light-emitting area and a non-light-emitting area, and the non-light-emitting area is on the upper and lower sides of the light-emitting area; When the light passes through the scattering material, it continuously refracts, reflects and scatters in the two media.

Further, columnar light distribution patterns are provided on the side walls around the reflector.

Further, the light distribution pattern surface of the reflector is a frosted surface.

Further, the light-emitting area and the non-light-emitting area of the additional mask are integrally formed.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

(1) Use the reflector and the additional mask to realize the double diffusion of the light source, so that the light can be emitted evenly, and the effect of uniform lighting at different angles can be achieved.

(2) The structure is simple, and it can be applied to the rear position lamp and the brake lamp, so that the brake lamp can achieve the same lighting effect as the rear position lamp.

(3) Compared with the existing light-emitting structure that achieves a similar light-emitting effect, the uniformity of lighting at different angles is better.

Description of drawings

Fig. 1 is an outline drawing one of the present invention;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is an explosion diagram of the present invention;

Fig. 4 is a layout diagram of light distribution patterns of reflectors;

Fig. 5 is a schematic diagram of a reflector structure;

Fig. 6 is a B-B sectional view of Fig. 5 and a light diffusion path of a rectangular light distribution pattern;

Fig. 7 is a schematic diagram of the reflector structure II;

Fig. 8 is a C-C sectional view of Fig. 7 and a light diffusion path of a columnar light distribution pattern;

Fig. 9 is the outline drawing 2 of the present invention;

Fig. 10 is a D-D sectional view of Fig. 9 .

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Referring to FIG. 1 to FIG. 10 , a rear position lamp and brake lamp multiplexing lighting structure for achieving uniform lighting effect of the present invention includes an LED light source 1 , a circuit board 2 , a radiator 3 , a reflector 4 , and an additional mask 5 . The LED light source 1 is welded on the circuit board 2, the circuit board 2 is fixed to the heat sink 3 by clamping and screws, the radiator 3 is fixed to the reflector 4 by clamping and screws, and the reflector 4 is fixed to the reflector 4 by clamping and screws Attach mask 5 on. The LED light source is a point light source. Multiple reflection areas are set in the middle of the reflector 4, and each reflection area is provided with a rectangular light distribution pattern. Through the reflection of a single reflection area, the rectangular light distribution pattern 4-1 improves the utilization rate of light efficiency and realizes the first Secondary diffusion to achieve a rectangular glow effect in a single reflective area. At the same time, the surface of the rectangular light distribution pattern 4-1 of the reflector is frosted to disperse the reflected light and avoid graininess.

The side walls around the reflector will produce concentrated reflections. In order to avoid this situation, R0.75mm columnar light distribution patterns 4-2 are made to diffuse the reflected light and prevent excessively bright areas from being observed from different angles.

The accessory mask includes a light-emitting area 5-1 and a non-light-emitting area 5-2, and the non-light-emitting area is on the upper and lower sides of the light-emitting area. In order to avoid the reduction of uniformity caused by the clamping and welding structure areas of the two separate parts, an integrally formed two-color injection molding process is adopted. The non-luminous area is made of black PC material to provide limited shielding of the internal structure. The light-emitting area is in the shape of a band, using a milky white dispersion material with a scattering rate of 35.7% and a transmittance of 73% for a wall thickness of 2.5mm. The light-emitting area is in a band shape, which contains two media with different refractive indices. When the light passes through the scattering material Continuous refraction, reflection and scattering occur in the two media to realize the diffusion of light again and achieve the effect of uniform lighting at different angles.

Its light-emitting principle: first, the LED light source realizes point-like light emission, and the rectangular light distribution pattern 4-1 of the single reflection area in the middle of the reflector diffuses for the first time to realize the rectangular light-emitting effect of the single reflection area, and at the same time, the columnar light distribution pattern 4-1 around the reflector 2 Diffusion of the reflected light, and then through the additional mask 5 made of scattering materials, the light is diffused again, and finally the effect of uniform lighting at different angles is achieved.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (4)

1. The utility model provides a realize the multiplexing light emitting structure of back position lamp and stop lamp of even effect of lighting which characterized in that: the LED light source comprises an LED light source (1), a circuit board (2), a radiator (3), a reflector (4) and an additional mask (5); the LED light source (1) is arranged on a circuit board (2), the circuit board (2) is fixed on a radiator (3), the radiator (3) is fixed on a reflector (4), and the reflector (4) is fixed on an additional mask (5); the LED light source (1) is a point light source, a plurality of reflecting areas are arranged in the middle of the reflector (4), and each reflecting area is provided with a rectangular light distribution pattern (4-1); the accessory mask comprises a light-emitting area (5-1) and a non-light-emitting area (5-2), wherein the non-light-emitting area (5-1) is arranged on the upper side and the lower side of the light-emitting area (5-2); the light emitting region (5-1) is in a strip shape, and adopts a scattering material containing two mediums with different refractive indexes, so that light rays are continuously refracted, reflected and scattered in the two mediums when passing through the scattering material.

2. The multiplexing light-emitting structure of the back position lamp and the stop lamp for realizing the uniform lighting effect according to claim 1, wherein the reflector (4) is provided with a columnar light distribution pattern (4-2) on the peripheral side wall.

3. The multiplexing lighting structure of back position lamp and stop lamp for realizing uniform lighting effect according to claim 1 or 2, characterized in that the light distribution pattern surface of the reflector (4) is frosted.

4. The multiplexing lighting structure of back light and stop light for realizing uniform lighting effect as claimed in claim 1, wherein the light-emitting area (5-1) and the non-light-emitting area (5-2) of the additional mask (5) are integrally formed.

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