Modular LED Lighting System for Sign Boxes
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Solution Overview
Problem
Conventional lighting units for light boxes and sign cabinets face issues with short lifespans and low electrical efficiency, particularly with incandescent and fluorescent bulbs, and lack flexibility in adjusting LED density for varying illumination needs.
Innovation Solution
A lighting system comprising interconnected LED units on a printed circuit board within a light box housing, with a mounting mechanism and center-stripped conductors for easy assembly and flexible light distribution, allowing for efficient and reliable illumination with adjustable LED density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional light sources (incandescent, fluorescent, neon) are used in light boxes, then sufficient illumination can be achieved, but the lifespan is short and electrical efficiency is low
Solution Approach 1:
The patent changes the fundamental parameters of the light source by transitioning from gas-discharge (fluorescent, neon) and thermal radiation (incandescent) mechanisms to solid-state LED technology. This parameter change achieves both extended lifespan (50,000-70,000 hours vs. 750-20,000 hours for conventional sources) and improved electrical efficiency, as LEDs convert electric energy to light with minimal heat loss
Solution Approach 2:
The patent replaces conventional lighting mechanisms with LED technology, substituting the mechanical and chemical processes of incandescent filaments, fluorescent gas discharge, and neon bulb operation with solid-state electroluminescence. This substitution eliminates the short lifespan and low efficiency issues inherent in conventional light sources
2Illumination intensity
If LED density is increased to improve illumination, then lighting performance improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent segments the lighting system into modular LED units that can be independently manufactured and then assembled in various densities. Each LED module is a discrete component that can be configured in different arrangements, allowing flexible illumination design without increasing overall system complexity
Solution Approach 2:
The patent creates universal LED modules that can serve multiple functions and be applied in various configurations. These standardized modules can be used at different densities depending on illumination requirements, simplifying manufacturing while maintaining flexibility in lighting performance
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 system provides efficient, reliable, and cost-effective illumination with extended LED lifespan, reduced energy consumption, and flexibility in adjusting LED density for different lighting applications, enhancing both aesthetic and functional aspects.
Implementation Method 1
LEDs are solid state devices that convert electric energy to light and generally comprise one or more active regions of semiconductor material interposed between oppositely doped semiconductor layers. When a bias is applied across the doped layers, holes and electrons are injected into the active region where they recombine to generate light.
Data Source
Figure 1~2a
Figure 2b~2d
Figure 2e~3a
AI summary
A lighting system comprising a light box housing, a plurality of lighting units including a housing, a plurality of light emitting elements mounted on a PCB within the housing. The lighting units can also be interconnected in a daisy-chain configuration on at least one carrier, such that the lighting units form an array of lighting units. The array of lighting units adapted to be mounted within the light box housing, wherein the light box housing comprises one or more arrays of lighting units.