LED Heat Sink Alignment Key for Trim Orientation
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Solution Overview
Problem
Traditional light fixtures often suffer from performance issues due to the use of non-specifically designed trims, which can lead to suboptimal lighting and thermal management, resulting in perceived inefficiencies.
Innovation Solution
The integration of a heat sink with alignment features and a trim system that includes specific apertures and alignment features, allowing only qualified trims to properly mate with the LED light source, ensuring proper orientation and thermal management, while also serving as a directional light element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If generic trims are used to attach to luminaires, then the variety and availability of trim options increase, but the lighting performance and thermal management deteriorate
Solution Approach 1:
The patent employs asymmetric alignment features including a keyed protrusion on the heat sink that mates with a corresponding keyed aperture in the trim. This asymmetric geometry ensures only trims specifically designed for this luminaire type can be properly installed, preventing generic incompatible trims from being used while maintaining thermal and optical performance
2Ease of operation
If trim orientation is not controlled, then installation ease increases, but light distribution and performance deteriorate
Solution Approach 1:
The keyed alignment feature acts as a mechanical guide that automatically orients the trim in the correct angular position during installation. The asymmetric key geometry prevents incorrect rotation, ensuring the trim's light distribution characteristics are properly aligned with the luminaire's optical axis while maintaining simple installation through push-on attachment
3Device complexity
If thermal management is insufficient, then device complexity decreases, but LED lifespan and reliability deteriorate
Solution Approach 1:
The patent integrates the thermal management function directly into the trim assembly by incorporating a heat sink with fins that extend into the trim's interior cavity. This merged design allows the trim to serve both its decorative/light-distribution function and its thermal management function, conducting heat from the LED through the heat sink to the trim's exterior surface for dissipation
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 the performance of light fixtures by ensuring proper trim orientation and thermal management, improving light distribution and reducing perceived inefficiencies, while also providing aesthetic and decorative options.
Implementation Method 1
a heat sink, coupled to the LED light source
Implementation Method 2
heat sink...can include an alignment feature protruding from a bottom end of the heat sink
Data Source
AI summary
The luminaire includes a light emitting diode (LED) module that includes a heat sink with an outer wall defining a top cavity and a bottom cavity and a mounting flange generally positioned along the bottom of the outer wall. A LED light source is positioned within the bottom cavity and in thermal communication with the heat sink. The bottom surface of the mounting flange includes one or more alignment features or keys extending out from the bottom surface. A trim having a corresponding alignment aperture is matingly engaged by positioning all or a portion of the alignment feature into the alignment aperture to ensure proper orientation of the trim with the LED module and to provide sufficient surface area for good thermal transfer between the heat sink and the trim.