Cross-Shaped Light Guide for 360-Degree LED Illumination
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Solution Overview
Problem
Conventional light guides made of optical grade materials like acrylic resin, polycarbonate, and glass suffer from inadequate light transmission efficiency and are prone to breakage and vibration, limiting their effectiveness in LED lamp applications.
Innovation Solution
The design incorporates a light guide with a cross-shaped configuration of wing plates and grooves, allowing for 360-degree light emission by refracting light through the grooves and cross grains, combined with an integral or separable long-strip bar structure, and a lamp holder formed by one-time injection molding for enhanced durability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional optical grade materials (acrylic resin, polycarbonate, glass) are used for light guide, then light transmission is achieved, but light transmission efficiency is inadequate and the material is prone to breakage and vibration
Solution Approach 1:
The patent changes the material parameter from conventional optical grade materials to ultra-clear plastic material with specific optical properties (transmittance ≥90%, refractive index 1.49-1.55). This parameter change resolves the contradiction by providing both high light transmission efficiency and improved resistance to breakage and vibration through the superior mechanical and optical properties of the ultra-clear plastic material.
2Illumination intensity
If traditional LED lamp structure is used, then manufacturing is simple, but light-emitting angle is limited and cannot simulate traditional lamp effects
Solution Approach 1:
The light guide is segmented into a cross-shaped structure with four wing plates extending in different directions. This segmentation enables light to be emitted in multiple directions (achieving 360-degree illumination angle) while the entire cross-shaped light guide remains a single integrated component, avoiding excessive structural complexity.
Solution Approach 2:
The patent transitions from a conventional linear or simple geometric light guide to a cross-shaped three-dimensional structure with wing plates extending in multiple spatial dimensions. This dimensional change enables 360-degree light emission by distributing light pathways in different spatial directions, achieving traditional lamp effects while maintaining manufacturing simplicity through integral molding.
3Productivity
If conventional light guide structure is used, then manufacturing is straightforward, but light transmission effect is not ideal and energy efficiency is low
Solution Approach 1:
The patent optimizes the refractive index parameter of the light guide material to 1.49-1.55, which matches well with the LED light source and enables more efficient light coupling and transmission. This parameter optimization reduces light transmission loss and improves energy efficiency while maintaining straightforward manufacturing processes through integral molding.
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 configuration achieves a large light-emitting angle close to 360 degrees, simulating traditional lamp effects, while being energy-efficient, environmentally friendly, and simplifying manufacturing and assembly, with improved resistance to water, dust, and impact.
Implementation Method 1
Light is transmitted through light guide by means of total internal reflection
Implementation Method 2
allowing for 360-degree light emission by refracting light through the grooves and cross grains
Data Source
AI summary
An LED lamp with an LED lamp light guide of ultra-high brightness and large angle, including a lamp holder, a lampshade, an LED light source, and the light guide is provided. The lamp holder is fastened with the lampshade, the LED light source is arranged in the lamp holder and connected to a power source through the lamp holder, the light guide is arranged inside the lamp holder and the lampshade, and the light guide is a long bar with four wing plates perpendicularly connected to each other in a cross shape when viewed longitudinally.