LED Light Sign with Optical Fiber Voltage Groups
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Solution Overview
Problem
Conventional light emitting sign boards using optical fibers face issues with durability and visibility due to disconnection of light emitting diodes and inefficient power management, leading to increased risk of traffic accidents, especially in adverse weather conditions.
Innovation Solution
A light emitting sign apparatus with a front panel and optical fibers connected to a light source assembly, featuring multiple groups of light emitting diodes with different power voltages and a controller for managing battery charging and light emission modes, including solar cell integration for autonomous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If reflection paper is used on road sign boards, then the sign board can reflect light from vehicles, but reflection performance deteriorates in fog, rain, or when dewdrops form
Solution Approach 1:
The patent replaces the passive reflection paper mechanism with an active light emitting diode system. Instead of relying on external light reflection, LEDs actively emit light through optical fibers to illuminate the sign board, ensuring visibility independent of external light conditions or weather.
2Productivity
If reflection paper is used on road sign boards, then the sign board can provide traffic information, but the reflection paper deteriorates under ultraviolet light exposure reducing its lifespan
Solution Approach 1:
The patent substitutes the degradable reflection paper with durable light emitting diodes and optical fibers. The LED-based system actively generates light rather than relying on UV-sensitive reflection materials, eliminating the lifespan limitation imposed by ultraviolet degradation.
3Power
If conventional light emitting diodes are used in light emitting sign boards, then light emission is achieved, but unnecessary power is lost in resistor elements and power management is inefficient
Solution Approach 1:
The patent applies different power voltages to different groups of light emitting diodes based on their specific requirements. This parameter differentiation optimizes power distribution, allowing each group to operate at its optimal voltage level and reducing unnecessary power loss that would occur with uniform voltage distribution and resistor-based control.
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
Enhances durability and visibility of the sign board, prevents damage from transient currents, and optimizes power usage, reducing the risk of traffic accidents by ensuring consistent and efficient light emission across varying conditions.
Implementation Method 1
a plurality of optical fibers having one ends respectively connected to the plurality of emission holes and the other ends constituting a concentrated bundle
Implementation Method 2
a light source assembly including a plurality of light emitting diodes optically coupled to the other ends of the plurality of optical fibers
Data Source
AI summary
A light emitting sign apparatus using an optical fiber includes: a front panel including a plurality of emission holes; a plurality of optical fibers having one ends respectively connected to the plurality of emission holes and the other ends constituting a concentrated bundle; and a light source assembly including a plurality of light emitting diodes optically coupled to the other ends of the plurality of optical fibers, wherein the plurality of light emitting diodes are located on a plane. Each of the plurality of light emitting diodes belongs to any one of a plurality of groups, one ends of the plurality of groups are connected to the same node, and different power voltages are applied to the other ends of the plurality of groups.