LED Lighting Units for Sign Boxes with Adjustable Distribution
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Solution Overview
Problem
Conventional lighting units for light boxes and sign cabinets face issues with short lifespan, low electrical efficiency, and limited flexibility in adjusting the density of light sources, leading to increased energy consumption and maintenance challenges.
Innovation Solution
The development of a lighting system comprising a light box housing with interconnected LED lighting units on a printed circuit board, where the LEDs emit light in a direction away from the board, and a mounting mechanism to adjust the light distribution pattern, allowing for flexible configuration and reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional light sources (incandescent bulbs, neon bulbs, fluorescent tubes) are used in light boxes, then sufficient illumination can be achieved, but the lifespan is short and energy consumption is high
Solution Approach 1:
The patent changes the fundamental parameter of the light source from conventional technologies (incandescent, neon, fluorescent) to LED technology. This parameter change resolves the contradiction by providing a light source that delivers sufficient illumination intensity while simultaneously achieving significantly extended operational lifespan of 50,000-70,000 hours compared to the short lifespan of conventional light sources
2Illumination intensity
If conventional light sources (incandescent bulbs, fluorescent tubes) are used to provide sufficient lighting in large lighting applications, then illumination requirements are met, but energy consumption is significant
Solution Approach 1:
The patent changes the energy efficiency parameter by transitioning to LED technology. LEDs convert electric energy to light with minimal energy loss, achieving the same luminous flux as incandescent and fluorescent lights but consuming only a fraction of the energy. This resolves the contradiction between meeting illumination requirements and reducing energy consumption
3Ease of manufacture
If fixed density lighting units are used in light boxes, then manufacturing is simplified, but flexibility in adjusting light distribution pattern is limited
Solution Approach 1:
The patent applies the dynamics principle by making the lighting unit adaptable and reconfigurable. The lighting unit can be configured in different densities and arrangements (single-sided, double-sided, multi-sided) to match various light box configurations. This dynamic adaptability allows the same basic lighting unit design to serve multiple applications, resolving the contradiction between manufacturing simplicity and flexibility
4Adaptability or versatility
If multiple different density lighting chains are maintained to accommodate different applications, then customer needs are met, but inventory complexity and cost increase
Solution Approach 1:
The patent applies the universality principle by designing a lighting unit that can serve multiple functions and configurations. A single lighting unit design can be adapted to create different density configurations and can be used in various light box applications (single-sided, double-sided, multi-sided). This universal design eliminates the need to maintain multiple different density chains in inventory, resolving the contradiction between application coverage and inventory 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 system provides efficient, reliable, and cost-effective illumination with extended lifespan, reduced energy usage, and flexibility in light distribution, enhancing the aesthetic appeal and operational efficiency of light boxes and sign cabinets.
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
AI summary
A lighting system having a light box housing, a plurality of lighting units, a plurality of light emitting elements mounted on a PCB. 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 has one or more arrays of lighting units.