Vehicle Lamp Light Guide Vertical Stacking
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Solution Overview
Problem
Existing vehicle lamp designs face limitations in design freedom and color uniformity when using multiple colored light sources, as the extended shape of the light guiding lens restricts the arrangement of light sources and leads to color irregularities during lighting.
Innovation Solution
A vehicle lamp configuration with a light guiding body featuring separate light guide sections for each color of light, connected via a third light guide section, and emitting surfaces that are inclined to refract light in a way that improves the appearance of light emission by allowing efficient guidance and diffusion of light from different positions, reducing color irregularities and enhancing design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light sources having different colored lights are disposed side by side at a position opposite to an incidence section of the light guiding lens, then the light emitting surface can emit different colored lights, but the light guiding lens becomes horizontally extended which restricts design freedom and causes color irregularity
Solution Approach 1:
The patent changes the arrangement dimension from horizontal (side-by-side) to vertical (stacked) configuration. Multiple light sources having different colored lights are disposed in a vertical direction overlapping each other at the same position, which eliminates the horizontal extension of the light guiding lens while maintaining the capability to emit different colored lights from the same light emitting surface.
2Adaptability or versatility
If light sources having different colored lights are disposed side by side, then different colored lights can be emitted, but the interval between light sources of the same color becomes longer causing color irregularity in appearance
Solution Approach 1:
By stacking light sources vertically instead of arranging them horizontally, the patent reduces the spatial interval between light sources of the same color in the horizontal direction. This vertical stacking configuration maintains color uniformity in the appearance while enabling emission of different colored lights through the same light emitting surface.
3Adaptability or versatility
If light sources are arranged to emit different colored lights from the same surface, then design freedom is improved, but the light guiding lens shape becomes restricted
Solution Approach 1:
The vertical stacking configuration allows the light guiding lens to maintain a compact, non-horizontal shape while still achieving the effect of emitting different colored lights. This resolves the conflict between design freedom and structural complexity by using a vertical arrangement that does not extend the lens horizontally.
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
The solution enhances the appearance of light emission by ensuring uniformity and reducing color irregularities, allowing for a more compact design and efficient light distribution, while maintaining the ability to emit different colored lights from a combined light source.
Implementation Method 1
light emitted from the light source is incident on the light guiding lens from an incidence surface of the light guiding lens, and the light is emitted from the light emitting surface of the light guiding lens to the outside of the light guiding lens while the light is guided into the inside of the light guiding body
Implementation Method 2
emitting surfaces that are inclined to refract light in a way that improves the appearance of light emission by allowing efficient guidance and diffusion of light from different positions
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
In a light guiding body (4) of a vehicle lamp (1), a first light guide section (4a) is connected to a rearward side of a third light guide section (4c), a second light guide section (4b) is connected to a lateral side of the third light guide section (4c), the third light guide section (4c) is provided to protrude forward from a position where the first light guide section (4a) and the second light guide section (4b) are connected, and a reflecting section (13) includes a reflecting surface (13b) that is located at a side of the third light guide section (4c) which is opposite to a position where the second light guide section (4b) is connected with the third light guide section (4c) and that is configured to reflect second light (L2) toward an emitting section (12) at front.