CN115899611A - Thick-walled photoconductive light-emitting structure of rear turn signal - Google Patents

Abstract

The invention discloses a thick-wall light guide light-emitting structure of a rear steering lamp, belonging to the technical field of automobile lamps. The invention discloses a thick-wall light guide light-emitting structure of a rear steering lamp, which realizes light condensation through a light-gathering bowl of a thick-wall light guide, realizes light reflection on a lateral reflecting surface, and realizes light re-diffusion on a diffusion pattern surface through total reflection and full mixing when light enters a thick-wall light guide, thereby realizing uniform light-emitting effects at different angles.

Description

Thick-walled photoconductive light-emitting structure of rear turn signal

technical field

The invention discloses a thick-walled photoconductive light-emitting structure of a rear turn signal, which belongs to the technical field of automobile lamps.

Background technique

At present, the rear turn signal adopts the form of thick-walled light guide, and the LED light source is mostly arranged directly behind the thick-walled light guide, and the light shines forward. Through the mixing of thick-walled light guides, the purpose of uniform light emission is achieved. In the lighted state, since the light emitting angle of the LED light source generally does not exceed 120°, the light intensity in the area outside the light emitting range is small, resulting in high brightness in the center and dark surrounding areas. At the same time, in the off state, the yellow phosphor part of the LED light source can be observed through the transparent thick-walled light guide, resulting in poor appearance.

The transparent texture and rich line changes of the thick-walled light guide can express a recognizable band-shaped luminous effect after being lit. When the light is not lit, it can present a crystal clear shape inside the lamp. The more and more OEMs The LED light source + thick-walled light guide optical solution is increasingly used in the function of the rear turn signal. In the traditional thick-walled light guide solution, the LED light source is generally arranged directly behind the thick-walled light guide, which is prone to obvious graininess after being lit, and when it is not lit, it is easy to show internal appearance defects through the transparent thick-walled light guide.

Contents of the invention

The object of the present invention is to provide a thick-walled photoconductive light-emitting structure of a rear turn signal lamp, which can achieve a lighting effect of uniform lighting and avoid poor appearance caused by the exposed internal LED light source and other structures in a non-lighting state.

The problem to be solved by the present invention is achieved by the following technical solutions:

A light-emitting structure of a rear turn signal thick-walled light guide, comprising a thick-walled light guide, the thick-walled light guide includes an upper mounting surface and a lower mounting surface parallel to each other, the inner side of the thick-walled light guide is provided with an upper mounting surface and a lower mounting surface Reflective surface, the outer side of the thick-walled light guide is provided with an installation platform that matches the decorative frame, the outer side of the installation platform is provided with a diffusion pattern surface, the position corresponding to the upper installation surface and the reflection surface is provided with a concentrating bowl, and the LED light source is set At the bottom of the circuit board, a radiator is arranged on the top of the LED light source integrated board, the edge of the focusing bowl intersects with the reflecting surface, the radiator is installed on the upper mounting surface and the LED light source corresponds to the focusing bowl.

preferably

Preferably, the included angle between the reflective surface and the lower installation surface is 135 degrees.

Preferably, the included angle between the diffusion pattern surface and the lower mounting surface is 75.35 degrees.

The beneficial effect that the present invention has with respect to existing:

The invention discloses a light-emitting structure of a thick-walled light guide for a rear turn signal. The light is concentrated through the light-concentrating bowl of the thick-walled light guide, and the reflection of light is realized on the side reflection surface. The light enters the thick-walled light guide, undergoes total reflection and fully Mixing, the light can be re-diffused on the diffusion pattern surface, and the uniform luminous effect at different angles can be realized.

Description of drawings

Figure 1 is an exploded view of the present invention.

Fig. 2 is an overall structural diagram of the present invention.

Fig. 3 is a sectional view at A of Fig. 2 of the present invention.

Figure 4 is a cross-sectional view of a thick-walled light guide of the present invention.

Among them, 1-LED light source, 2-circuit board, 3-radiator, 4-thick wall light guide, 41-condensing bowl, 42-reflecting surface, 43-installation table, 44-upper installation surface, 45-lower installation surface , 46-diffusion pattern surface.

Detailed ways

Below according to accompanying drawing 1-4, the present invention will be further described:

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

As shown in Figures 1-4, the first embodiment of the present invention provides a thick-walled light-guide light-emitting structure for a rear turn signal on the basis of the prior art, including a thick-walled light guide 4, a heat sink 3, a circuit board 2 and an LED light source 1. The installation structure of the above-mentioned components will be introduced in detail below.

The thick-walled light guide 4 includes an upper installation surface 44 and a lower installation surface 45 parallel to each other. The inner side of the thick-walled light guide 4 is provided with a reflective surface 42 connected with the upper installation surface 44 and the lower installation surface 45. The outer side of the thick-walled light guide 4 is provided with a decorative frame. 5 Cooperating mounting table 43, the outer side of mounting table 43 is provided with diffusion pattern surface 46, and the position corresponding to upper mounting surface 44 and reflecting surface 42 is provided with concentrating bowl 41, and the included angle between reflecting surface 42 and lower mounting surface 45 is 135 degrees, and the angle between the diffusion pattern surface 46 and the lower mounting surface 45 is 75.35 degrees. The LED light source 1 is welded on the bottom of the circuit board 2, the top of the circuit board 2 has a radiator 3 through screws, the edge of the concentrating bowl 41 intersects with the reflective surface 42, the upper mounting surface 44 is fixed with a bracket by bolts, and the radiator 3 is installed on the upper surface. The LED light source 1 is on the bracket of the mounting surface 44 and the light collecting bowl 41 is corresponding.

The LED light source 1 realizes point-like light emission, the light is concentrated through the light-concentrating bowl 41 of the thick-walled light guide 4, and the reflection of light is realized on the side reflective surface 42. The patterned surface 46 realizes the re-diffusion of light, and realizes the uniform lighting effect at different angles. The light source part is covered by the decorative frame 5, so as to avoid direct observation of the LED light source 1 and produce a bright and dark lighting appearance.

Although embodiments of the present invention have been disclosed above, it is not limited to the applications set forth in the specification and examples. It can be fully applied to various fields suitable for the present invention. Additional modifications can readily be made by those skilled in the art. Therefore, the invention should not be limited to the specific details and examples shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (3)

1. A thick-walled light-guide light-emitting structure for a rear turn signal, characterized in that it comprises a thick-walled light guide (4), and the thick-walled light guide (4) includes an upper mounting surface (44) and a lower mounting surface (45) parallel to each other , the inner side of the thick-walled light guide (4) is provided with a reflective surface (42) with the upper installation surface (44) and the lower installation surface (45), and the outer side of the thick-walled light guide (4) is provided with a decorative frame (5) A matching mounting table (43), the outer side of the mounting table (43) is provided with a diffusion pattern surface (46), and the position corresponding to the upper mounting surface (44) and the reflecting surface (42) is provided with a concentrating bowl (41 ), the LED light source (1) is arranged on the bottom of the circuit board (2), the top of the circuit board (2) is provided with a radiator (3), and the edge of the concentrating bowl (41) intersects with the reflective surface (42), The heat sink (3) is installed on the upper mounting surface (44), and the LED light source (1) corresponds to the focusing bowl (41). 2 . The thick-walled light-guiding light-emitting structure of the rear turn signal according to claim 1 , characterized in that the angle between the reflective surface ( 42 ) and the lower mounting surface ( 45 ) is 135 degrees. 3. The thick-walled light-guiding light-emitting structure of the rear turn signal according to claim 2, characterized in that the angle between the diffusion pattern surface (46) and the lower mounting surface (45) is 75.35 degrees.

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