Light guide assembly
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Solution Overview
Problem
Conventional charging devices for vehicles with lighting functionality face issues of non-uniform brightness, leading to increased costs due to the need for more LEDs to achieve uniform illumination.
Innovation Solution
A light guide assembly with a substrate and a light guide featuring slanting surfaces for reflecting light, a hollow space, and strategically placed LEDs to direct light uniformly across the surface, utilizing a transparent resin and diffusion powder for enhanced illumination, specifically designed to provide uniform brightness at a lower cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If more LEDs are used to achieve uniform brightness, then illumination uniformity is improved, but device cost increases
Solution Approach 1:
The patent introduces a light guide as an intermediary component between the LED light source and the charging port area. The light guide receives light from a single LED and redistributes it uniformly across the charging port and surrounding areas through its specially designed slanting surfaces, eliminating the need for multiple LEDs while achieving uniform illumination.
Solution Approach 2:
The light guide utilizes three-dimensional slanting surfaces with specific angle ranges (10-45 degrees) to redirect light in multiple directions. This dimensional approach to light redistribution allows a single point light source to achieve area-wide uniform illumination, transforming the problem from a two-dimensional array of LEDs to a three-dimensional light path control system.
2Illumination intensity
If more LEDs are used to achieve uniform brightness, then illumination uniformity is improved, but device complexity increases
Solution Approach 1:
The light guide serves as a mediating optical element that simplifies the overall system structure. Instead of requiring multiple LEDs and their associated control circuits, the patent uses a single LED combined with a light guide featuring slanting surfaces to achieve uniform illumination, thereby reducing structural complexity.
Solution Approach 2:
The patent changes the geometric parameters of the light guide, specifically incorporating slanting surfaces with angles between 10-45 degrees. This parameter modification allows the light guide to effectively redirect and distribute light uniformly, achieving the same illumination effect as multiple LEDs but with simpler structure.
3Device complexity
If conventional lighting structures are used, then device simplicity is maintained, but illumination uniformity deteriorates
Solution Approach 1:
The light guide incorporates localized slanting surfaces with specific angle ranges (10-45 degrees) in critical areas to optimize light reflection and distribution. This local quality enhancement at key interfaces within the light guide enables uniform illumination across the charging port area while maintaining overall structural simplicity.
Solution Approach 2:
The patent modifies the geometric parameters of the light guide structure by introducing slanting surfaces with controlled angles. This parameter change transforms the light distribution pattern from non-uniform to uniform, improving illumination quality without significantly increasing structural complexity.
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 light guide assembly achieves uniform light distribution across the charging device, improving visibility without the need for excessive LEDs, thus reducing costs while maintaining effective illumination for vehicle users.
Implementation Method 1
the top surface of the body comprises a first protrusion having a first slanting surface and a second slanting surface opposite to the first slanting surface for reflecting lights entering into the body
Implementation Method 2
utilizing a transparent resin and diffusion powder for enhanced illumination
Data Source
AI summary
A light guide assembly, comprising: a substrate and a light guide disposed on the substrate, wherein the top surface of the body comprises a first protrusion having a first slanting surface and a second slanting surface opposite to the first slanting surface for reflecting lights entering into the body, wherein a first outer surface of the body extends from a first lateral surface to the first slanting surface, wherein a highest point of the first slanting surface is located between the first lateral surface and a second lateral surface opposite to the first lateral surface, and a highest point of the second slanting surface is located between the first lateral surface and a lowest point of the second slanting surface.