Thermally Conductive Extrusion for LED Retrofit in Fluorescent Fixtures
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Solution Overview
Problem
Traditional fluorescent light fixtures are inefficient and have short lamp life, and retrofitting with LED light sources is labor-intensive, costly, and poses safety hazards due to inadequate thermal dissipation, leading to reduced LED system lifespan.
Innovation Solution
An LED lighting assembly comprising a thermally conductive extrusion, light emitting diodes, and a diffuser, which can be easily integrated into existing fluorescent light fixtures, providing effective heat dissipation and improved LED performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED light sources are retrofitted into existing fluorescent fixtures, then energy efficiency and lamp life are improved, but thermal dissipation becomes inadequate leading to reduced LED system lifespan
Solution Approach 1:
The LED lighting assembly is divided into separate functional modules: LED modules mounted on a support structure, a diffuser module for light distribution, and a ballast housing for electrical components. This segmentation allows each module to be optimized independently, with the support structure specifically designed with thermal management features to dissipate heat from the LED modules while maintaining overall system efficiency.
2Duration of action of stationary object
If LED light sources are retrofitted into existing fluorescent fixtures, then lamp life is extended, but installation becomes labor-intensive and costly
Solution Approach 1:
The LED lighting assembly is designed with universal mounting features that adapt to various existing fluorescent fixture configurations. The support structure includes mounting brackets and attachment mechanisms that can be installed in standard fluorescent fixtures without requiring custom fabrication or extensive electrical modifications, thereby reducing installation complexity while preserving the extended lamp life benefit of LEDs.
3Reliability
If LED light sources are retrofitted into existing fluorescent fixtures, then operational benefits are improved, but safety hazards increase due to exposed electrical wiring
Solution Approach 1:
The ballast housing serves as an intermediary component that provides a safe, enclosed environment for electrical wiring and connections. By routing all electrical connections through this protected housing rather than leaving them exposed in the fixture, the design maintains reliable electrical connections while eliminating safety hazards from exposed wiring, thus preserving operational benefits while reducing harmful factors.
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 solution allows for efficient heat management, extending LED lifespan and reducing installation costs and safety hazards, making it feasible to replace fluorescent fixtures with LED sources without compromising performance.
Implementation Method 1
a thermally conductive extrusion, light emitting diodes, and a diffuser
Data Source
AI summary
Described are LED lighting assemblies that may be used to replace a light source in a light fixture. The LED lighting assembly may include a thermally conductive extrusion, a plurality of light emitting diodes, and a diffuser. The diffuser is positioned below the light emitting diodes and also releasably engages the extrusion. The light fixture may include a housing, a reflector assembly with at least one longitudinally extending trough, at least one light source, and at least one lens assembly. As an example, the at least one lens assembly and the at least one light source are removed, and at least one LED lighting assembly is provided. At least a portion of the extrusion of the at least one LED lighting assembly is placed adjacent the at least one longitudinally extending trough. The diffuser of the at least one LED lighting assembly is connected to the at least one longitudinally extending trough.