LED Module Thermal Management via Segmented Mounting Plate
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Solution Overview
Problem
Existing LED lighting fixtures face challenges in thermal management, which affects the life and reliability of LEDs, efficiency of lumens generation, and the risk of fire, particularly in designs that do not allow for easy replacement or retrofitting of LED modules with effective heat conduction paths.
Innovation Solution
The LED light module assembly features a thermally conductive mounting plate with a printed circuit board directly mounted to it for efficient heat transfer, a retainer mechanism for easy assembly and disassembly, and a modular design with a light transmissive and reflective diffuser, allowing for easy swapping of components and compatibility with various junction box sizes using adapters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LEDs are permanently integrated into the fixture, then thermal management is improved, but ease of repair and replacement deteriorates
Solution Approach 1:
The LED lighting system is divided into separate modular components: a replaceable LED module and a fixture body. The LED module includes the printed circuit board with LEDs mounted on a thermally conductive substrate, while the fixture contains the mounting structure and power supply. This segmentation allows the LED module to be easily replaced while maintaining effective thermal management through the thermally conductive substrate that contacts the fixture housing.
2Ease of repair
If a replaceable LED module design is used, then ease of repair is improved, but thermal management deteriorates
Solution Approach 1:
A thermally conductive substrate serves as an intermediary between the LED module and the fixture housing. The substrate has high thermal conductivity to efficiently conduct heat away from the LEDs. The substrate includes a mounting surface that contacts the fixture housing, creating a thermal pathway that maintains effective heat dissipation even with a replaceable module design.
3Illumination intensity
If dedicated LEDs are used, then lumens output optimization is improved, but adaptability deteriorates
Solution Approach 1:
The LED module is designed as a universal, standardized component that can be retrofitted into various fixture types. The module includes a standardized mounting structure with mounting tabs that engage with corresponding receptacles in different fixture housings. This universality allows the same LED module design to be used across multiple fixture applications while maintaining optimized lumens output through proper LED arrangement and optical design.
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 solution enhances thermal management, extends the life of LEDs, improves lumens efficiency, and reduces the risk of fire by providing efficient heat dissipation and a modular, user-friendly installation process, while maintaining a low profile and aesthetically pleasing appearance.
Implementation Method 1
the printed circuit board is directly mounted and abuts to the bottom surface of the mounting plate for thermal conduction therebetween
Implementation Method 2
the mounting plate includes uncovered areas on the top and bottom surfaces to radiate heat
Data Source
AI summary
An LED light module assembly for a light fixture is disclosed. The LED light module assembly includes a light source having a printed circuit board containing an LED driver and LEDs. The printed circuit board is directly attached to a mounting plate that includes a thermally conductive and radiating material. An LED cover overlies the LEDs. Spring retainer clips hold a decorative trim ring in a spaced-apart relationship from the mounting plate, creating an air gap for cooling and keeping the trim ring cool. A light diffuser lens has hooked legs that twist lock to the mounting plate and diffuses the light from the LEDs.