Light Shielding Component Snap-Fit for Vehicle Lamp Light Leakage

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Solution Overview

Problem

Light leakage at the end of light guides in vehicle lamps affects the overall visual effect, as the light guides are not effectively sealed.

Innovation Solution

A light shielding component with a covering portion and a snap-fit portion, featuring slots and snap joints, is used to fix the light shielding component onto a supporting member of the light guide, ensuring a firm connection and blocking light rays.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a light guide is installed into the vehicle lamp via a supporting member without treatment, then the installation is simple, but light leaks out at the end of the light guide affecting the visual effect

Engineering Contradiction:
Improveinstallation simplicityVSAvoidlight leakage
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The invention introduces a separate light shielding component as an independent element that can be attached to the light guide. This segmentation allows the light guide to maintain its simple installation while the added shielding component specifically addresses the light leakage problem at the end of the light guide.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The light shielding component acts as an intermediary element between the light guide and the surrounding environment. It is positioned at the end of the light guide to intercept and block stray light rays, preventing them from leaking out and affecting the visual effect, while not interfering with the simple installation of the light guide itself.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a light shielding component is added to block light leakage, then light leakage is prevented, but the device complexity increases

Engineering Contradiction:
Improvelight leakageVSAvoidstructure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The light shielding component is designed as a simple, inexpensive accessory that can be easily attached and removed. It does not require complex integration into the light guide structure, and its simple snap-fit design allows for easy installation and replacement without adding significant complexity to the overall system.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The light shielding component采用 a thin-walled structure with a covering portion that can flexibly conform to the end of the light guide. This thin-film approach provides effective light blocking without requiring bulky or complex structural elements, thereby minimizing the increase in device complexity.

Inventive Principle:
Principle #30Flexible shells and thin films

3Reliability

If a snap-fit portion with slots and snap joints is used to fix the light shielding component, then the connection firmness is improved, but the manufacturing complexity increases

Engineering Contradiction:
Improveconnection firmnessVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The snap-fit portion with slots and snap joints is designed to be self-aligning and self-securing. The slots guide the snap joints into proper alignment during installation, and the snap joints automatically engage with the supporting member to provide firm connection. This self-service mechanism reduces the need for complex alignment procedures or additional fastening steps, balancing connection firmness with manufacturing simplicity.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11920756B2Light shielding component, and corresponding optical assembly, vehicle lamp and vehicle
Publication Date: 2024.03.05 VALEO VISION SA
  • US11920756B2 patent drawing
  • US11920756B2 patent drawing
  • US11920756B2 patent drawing

AI summary

One of the problems solved by an embodiment of the present invention is to solve the problem of light leakage. A light shielding component according to the present invention comprising a covering portion, and a snap-fit portion, wherein the covering portion is used to cover a light guide to block the transmission of light rays; and the snap-fit portion comprises at least one slot, which is used to fix the light shielding component. Compared with the prior art, the advantage of the solution of the present invention is that by using a light shielding component, the light beam leakage is better blocked, and a better visual effect is achieved.