Light guide structure, vehicle lamp, vehicle and manufacturing method of light guide structure

Abstract

The invention relates to a light guide structure, a vehicle lamp, a vehicle and a manufacturing method of the light guide structure. The light guide structure comprises a light source assembly, a light guide and colloid, wherein the light guide is arranged at one end of the light source assembly, and the side wall of the light guide is a paraboloid protruding outwards; the colloid is arranged between the light guide and the light source assembly and used for fixed connection. The colloid is arranged in the gap between one end of the light guide-in light surface and the light source, so that the interface light loss on one side of the light guide-in light surface is reduced, light escaping from the cylindrical surface of the light guide head is eliminated and reduced, the optical efficiency is improved, and the cost is also reduced; and according to the manufacturing method of the light guide structure, the positioning requirement between the light source and the light guide is reduced to a certain extent, the assembling difficulty of the light source assembly is reduced, and the product percent of pass is improved.

Description

technical field [0001] The present application relates to the technical field of vehicle lamps, in particular, to a light guide structure, a vehicle lamp, a vehicle and a manufacturing method thereof. Background technique [0002] A light guide is a structural component that guides the light emitted by the LED from the PCB to the front panel or the desired lighting position. This structural part is generally made of PC material or PMMA material with good light guiding performance. [0003] Light guides are already a common form of lighting for headlights and rear lights. Because of their low cost and rich styling designs, they are recognized by customers. At present, conventional light guide member structures such as figure 1 As shown, the installation of the LED light source assembly and the light guide is generally completed by screwing or hot riveting, but in this way, there must be a certain gap between the LED light source and the light-introducing surface, which will...

AI Technical Summary

Problems solved by technology

In addition, since one end of the light-incident surface of the light guide is generally set as a cylinder with equal cross-section, while the light-emitting envelope of the LED light source is a cone, part of the light will overflow from the side of the light guide head, reducing the optical efficiency.

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