Vehicle Light Lateral Emission via Refractive Housing
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Solution Overview
Problem
Existing vehicle signal lights face challenges in achieving improved light distribution, particularly in lateral radiation, due to limitations in LED lighting's lateral emission capabilities and the negative impact of additional reflectors on light distribution.
Innovation Solution
The use of a plurality of reflector-like optical elements, including prism-shaped ones, arranged to deflect partial light beams laterally while maintaining the main emission direction, ensuring shadow-free and redundant lateral deflection for enhanced luminous intensity and area coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an additional reflector is provided as a side light deflection means to achieve lateral emission, then lateral radiation is improved, but the actual light distribution of the lighting unit is negatively affected
Solution Approach 1:
The patent extracts the light deflection function from a traditional reflector and implements it through the housing structure itself. The housing is designed with specific geometric features (inclined surfaces, recesses) that naturally deflect light laterally without requiring an additional separate reflector component, thereby avoiding the negative impact on light distribution while achieving the required lateral radiation
Solution Approach 2:
The housing serves multiple functions: it provides structural support, defines the lamp geometry, and simultaneously acts as the side light deflection means through its designed inclined surfaces and recesses. This multi-functionality eliminates the need for a separate reflector component while maintaining both lateral radiation and light distribution quality
2Use of energy by moving object
If LED lighting elements are used as light sources, then energy efficiency is improved, but lateral emission capability is limited
Solution Approach 1:
The housing acts as an intermediary between the LED light source and the external environment. Through its inclined surfaces and recesses, the housing mediates the light emission by redirecting a portion of the LED's forward emission laterally, thereby enabling LED energy efficiency to be maintained while achieving the required lateral radiation capability
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 solution enables improved light distribution with increased lateral emission, ensuring compliance with legal radiation requirements and maintaining high luminous intensity, even if one or more light sources fail, while maintaining a flat and geometrically clear design.
Implementation Method 1
a first optical surface of the at least one optical element being aligned in a stepped manner to form a lighting unit in such a way that the partial light beam impinging relatively flatly on the first optical surface is deflected in the lateral direction
Implementation Method 2
the second and third optical surfaces connecting the first optical surfaces of adjacent optical elements. The relatively large-area first optical surfaces enable lateral emission with a relatively high luminous intensity. Due to the fact that the second and third optical surfaces are arranged at an incline
Data Source
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AI summary
The light (1) has multiple light units (2), which have light emitting light sources on one side and light guiding units (3'') on other side for generating a predetermined light distribution, where optical axes of the light units are parallel to each other. A side refraction unit extends into the extension of an edge of the light guiding unit and formed by multiple reflective unit optical elements.