Reflective LED Lighting Module for Wider Uniform Emission
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Solution Overview
Problem
Conventional LED lighting modules for vehicles have a limited light-emitting area due to the small emitting angle of LEDs, which results in reduced lighting effectiveness.
Innovation Solution
A lighting module design that includes a substrate with multiple LEDs, a resin layer, and reflective layers, where the resin layer features convex and concave portions to diffuse and refract light, increasing the light-emitting area and improving light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional LEDs are used for vehicle lighting, then power consumption is reduced, but the light-emitting area is limited due to small emitting angle
Solution Approach 1:
The patent transitions from point-source LED emission to line-shaped surface light source emission by arranging multiple LEDs in a linear configuration with reflective surfaces, effectively changing the dimensional characteristic of the light-emitting area from zero-dimensional point to one-dimensional line, thereby increasing the overall light-emitting area while maintaining LED energy efficiency
Solution Approach 2:
The patent combines multiple LEDs with reflective surfaces (first and second reflective surfaces) to create a unified line-shaped light source system, merging individual point sources into a collective linear emission structure that achieves both energy efficiency and increased light-emitting area
2Area of stationary object
If multiple LEDs are arranged to increase light-emitting area, then lighting effectiveness is improved, but light uniformity deteriorates due to hot spots
Solution Approach 1:
The patent applies different optical characteristics to different regions of the lighting module by positioning reflective surfaces at specific locations (first reflective surface at one end, second reflective surface at the other end) to locally control light distribution, thereby achieving uniform overall illumination while preventing hot spots in specific areas
Solution Approach 2:
The patent introduces reflective surfaces as intermediary elements between the LEDs and the external environment, using these reflective surfaces to mediate and redistribute light paths, which smooths out light distribution uniformity and eliminates hot spots caused by direct LED emission
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 design enhances light uniformity and luminous intensity, reducing hot spots and increasing the design freedom of LED lighting applications, particularly in vehicle lighting.
Implementation Method 1
the resin layer features convex and concave portions to diffuse and refract light
Implementation Method 2
the resin layer features convex and concave portions to diffuse and refract light
Implementation Method 3
A lighting module design that includes a substrate with multiple LEDs, a resin layer, and reflective layers
Data Source
AI summary
Lighting module disclosed in an embodiment of the invention, a substrate; a plurality of light emitting devices disposed on the substrate; a first reflective layer disposed on the substrate; a resin layer disposed on the first reflective layer and the light emitting device; and a second reflective layer disposed on the resin layer, wherein the resin layer is a front side surface on which light generated from the plurality of light emitting devices is emitted, a rear side surface facing the front side surface, and first and second side surfaces connecting the front side surface and the rear side surface with each other. A distance between the first reflective layer and the second reflective layer is smaller than a distance between the front side surface and the rear side surface of the resin layer, and the front side surface of the resin layer has a plurality of convex portions convex toward the front side surface from the light emitting device and a plurality of concave portions recessed in a direction of the rear side surface.