Vehicle Light Reflector Layout for Wider Uniform Output
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Solution Overview
Problem
Existing vehicle lighting systems using LEDs require a large number of LEDs to achieve desired light output, leading to increased cost, heat dissipation issues, and precise fitting challenges.
Innovation Solution
A light-emitting device with a reflective unit comprising a first and second reflective portion, connected by a bridging portion, and featuring reflective sub-faces that increase light beam width and uniformity, allowing fewer LEDs to be used while maintaining desired illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a large number of LEDs are used to achieve desired light output and illumination area, then light intensity and light distribution requirements are met, but cost increases and heat dissipation requirements increase
Solution Approach 1:
Multiple LEDs are arranged in an array within a single light-emitting unit and their light outputs are combined and redirected together by a reflective unit, achieving the desired light output with fewer individual LED components
Solution Approach 2:
A reflective unit with specifically designed reflective faces acts as an intermediary to redirect and combine light from multiple LEDs, enhancing the overall light output and distribution without requiring each LED to individually meet the illumination requirements
2Illumination intensity
If a large number of LEDs are used to achieve desired light output, then illumination area is covered, but heat dissipation requirements increase
Solution Approach 1:
By combining the light output from multiple LEDs into a single redirected beam through the reflective unit, the patent reduces the total number of LEDs required, thereby reducing the cumulative heat generation and simplifying heat dissipation requirements
3Illumination intensity
If a large number of LEDs are used to achieve desired light output, then light distribution is improved, but assembly precision requirements increase
Solution Approach 1:
The patent divides the lighting system into modular light-emitting units, each containing a controlled array of LEDs and an integrated reflective unit, which can be manufactured and assembled as standardized modules with consistent optical performance
Solution Approach 2:
By integrating the reflective unit as a single component that works with the LED array, the patent reduces the number of individual optical components that need to be precisely aligned and assembled, thereby reducing assembly precision requirements
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 reflective design enhances light uniformity and reduces the number of LEDs needed, simplifying assembly and manufacturing, and allows for dynamic lighting effects.
Implementation Method 1
The reflective unit comprises: a first reflective portion, having a first reflective face facing the light source; and a second reflective portion, having a second reflective face facing a light output region of the light-emitting unit
Data Source
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AI summary
The present invention relates to a light-emitting device and a vehicle. The light-emitting device (1) is for a vehicle and has at least one light-emitting unit (1A), the light-emitting unit (1A) comprising a light source (52) and a reflective unit (11), the reflective unit (11) comprising: a first reflective portion (20), having a first reflective face (21) facing the light source (52); and a second reflective portion (40), having a second reflective face (41) facing a light output region of the light-emitting unit (1A), wherein the reflective unit (11) further comprises a bridging portion (30) connecting the first reflective portion (20) and the second reflective portion (40).