Columnar Vehicle Lamp Light Guide Centering LED Source
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Solution Overview
Problem
In vehicle lamps with light guides, it is challenging to secure space for the installation of a light source without increasing the size of the lamp, as conventional designs often require the light source to be positioned at the outer edge, limiting installation space and making it difficult to expand without enlarging the lamp.
Innovation Solution
The design incorporates columnar light guides with specific extensions and reflective elements that allow the light source to be positioned at the center of the lamp, using a configuration where the light guide extends in a direction away from the center, enabling efficient light distribution while maintaining a compact size, and includes projections to guide light outside the connecting regions, ensuring continuous and uniform light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the light source is positioned at the outer edge of the lamp to use light guides, then light distribution is achieved, but the space for installation of the light source is limited and the lamp size must be increased to accommodate the light source
Solution Approach 1:
The light guide is configured with multiple extension parts that extend in different directions (first extension part in vehicle width direction, second extension part in vertical direction, third extension part in vehicle width direction), transforming the light guide from a simple linear structure to a multi-dimensional configuration. This allows the light source to be positioned at the center of the lamp while still achieving effective light distribution through the extended light guide structure, thereby securing installation space without increasing lamp size.
2Illumination intensity
If the light guide extends in multiple directions to distribute light effectively, then light distribution is improved, but the light guide structure becomes more complex
Solution Approach 1:
The light guide is divided into multiple distinct extension parts (first extension part, second extension part, third extension part), each serving a specific directional function. This segmentation allows for modular design and simplifies the overall structure by breaking down the complex multi-directional light guide into manageable sections, each extending in a specific direction to achieve comprehensive light distribution.
Solution Approach 2:
The light guide employs asymmetric extension where the first and third extension parts extend in opposite directions in the vehicle width direction, while the second extension part extends in the vertical direction. This asymmetric configuration optimizes light distribution across different regions of the lamp without requiring a symmetric complex structure, achieving efficient illumination with a streamlined design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for the secure installation of a light source, such as an LED unit, at the center of the vehicle lamp, preventing size increase, enhancing maintainability, and improving light distribution with continuous and uniform brightness across the light emitting regions.
Implementation Method 1
reflected by a reflective step provided on the inner surface of the light guide
Data Source
AI summary
A vehicle lamp includes: a first light source; and a columnar first light guide. The first light guide includes an incidence surface on which light of the first light source is incident, a first part that extends from the incidence surface toward one side in a direction of vehicle width, a second part that extends from an end of the first part toward one side in the vertical direction, and a third part that extends from an end of the second part toward the other side in the direction of vehicle width.