Vehicle trim part

By setting a low-refractive-index layer or a high-refractive-index layer between the light guide and the adhesive layer, the problem of decreased light guiding efficiency after the light guide and the functional layer are bonded is solved, achieving efficient light transmission of the light guide layer and reducing light loss.

CN224408661UActive Publication Date: 2026-06-26YANFENG INTERNATIONAL AUTOMOTIVE TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANFENG INTERNATIONAL AUTOMOTIVE TECHNOLOGY CO LTD
Filing Date
2025-07-02
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In the prior art, after the light guide and the functional layer are bonded together with adhesive, the light guiding efficiency of the light guide decreases, and some light rays leave the light guide through the adhesive layer, resulting in light loss.

Method used

A low-refractive-index layer or a high-refractive-index layer is placed between the light guide layer and the adhesive layer to restrict light from entering the adhesive layer. Total internal reflection is maintained by adjusting the refractive index difference, thereby reducing light loss.

Benefits of technology

By setting low-refractive-index or high-refractive-index layers, the light guiding efficiency of the light guide layer is improved, light loss is reduced, and the effective transmission of light from the light guide layer between the adhesive layer and the functional layer is ensured.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of improved vehicle ornament to improve the light guide efficiency of light guide layer needing to be bonded.The vehicle ornament includes: light guide layer (100);Functional layer (200);Glue layer (300);And low refractive index layer (400), the low refractive index layer (400) is arranged between the light guide layer (100) and the glue layer (300), the glue layer (300) is arranged between the low refractive index layer (400) and the functional layer (200) to the light guide layer (100) and the low refractive index layer (400) are bonded to the functional layer (200);Wherein, the refractive index of the low refractive index layer (400) is less than the refractive index of the light guide layer (100) to limit the light ray conducted by the light guide layer (100) from the light guide layer (100) into the low refractive index layer (400).
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