Compact Multi-Color Vehicular Lamp via Merged Light Guide
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Solution Overview
Problem
Existing vehicular lamps require multiple pairs of light sources and light guide bodies to achieve a luminescent region with multiple colors, leading to a non-compact configuration.
Innovation Solution
A vehicular lamp design featuring a light guide body with a first and second rod-shaped light guiding portion spaced apart, connected by a planar light guiding portion, and utilizing two light sources emitting different colors, allowing for a compact configuration while creating a widened luminescent region with multiple colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple pairs of light sources and light guide bodies are used to achieve multi-color luminescence, then the luminescent region can display multiple colors, but the configuration becomes non-compact and complex
Solution Approach 1:
The patent merges multiple light guide bodies into a single integrated light guide body that contains multiple rod-shaped light guiding portions (first, second, third rod-shaped portions) within one structure. This allows multiple light sources to be accommodated in a unified configuration, achieving multi-color luminescence while maintaining compactness and reducing overall structural complexity.
Solution Approach 2:
The light guide body is designed as a multi-functional component that can guide light from multiple different light sources (white light source, first colored light source, second colored light source) simultaneously. The single light guide body performs multiple functions of guiding different colored lights through its different rod-shaped portions, eliminating the need for separate light guide bodies for each color.
2Adaptability or versatility
If multiple pairs of light sources and light guide bodies are used to achieve multi-color luminescence, then the luminescent region can display multiple colors, but the vehicular lamp cannot be configured compactly
Solution Approach 1:
The patent combines multiple light guide functions into a single light guide body structure, allowing multiple light sources to be positioned closely together. The rod-shaped light guiding portions are arranged within one compact light guide body, significantly reducing the overall volume required compared to using separate light guide bodies for each light source.
Solution Approach 2:
The patent employs a nested arrangement where multiple rod-shaped light guiding portions are positioned within or alongside each other in a single light guide body. The first, second, and third rod-shaped light guiding portions are arranged in a space-efficient manner, with some portions positioned adjacent to or overlapping in projection, creating a compact nested structure that accommodates multiple light guiding functions in minimal space.
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
Enables a compact vehicular lamp with a luminescent region that can display multiple colors, with the planar light guiding portion appearing in different colors or mixed colors depending on the light sources' activation, and can be made brighter with a rear light source.
Implementation Method 1
a light guide body disposed to cause light emitted from a light source to be incident thereto and then emitted toward the front side of the vehicular lamp
Data Source
AI summary
Disclosed is a vehicular lamp having a light source and a light guide body. In the vehicular lamp, the light guide body is configured by a first and a second rod shaped light guiding portions disposed at positions spaced apart from each other, and a planar light guiding portion disposed to connect the circumferential surface portions of the first and second rod shaped light guiding portions with each other. Further, the light source configured to include a first light source and a second light source disposed to cause light to be incident from an end portion surfaces of the first and the second rod shaped light guiding portions, respectively, and then configured to make each of the first light source and the second light source to emit a different color light with each other.