Recessed LED Fixture Power Supply Positioning
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Solution Overview
Problem
Recessed LED lighting fixtures face limitations due to the placement of the power supply above the light source, which restricts maximum power output, increases glare, and compromises aesthetics due to visibility of the light source.
Innovation Solution
The power supply is mounted below the LED light source, allowing for higher power output without overheating and positioning the light source deeper within the housing to reduce glare and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power supply is positioned above the LED light source within the housing, then the power supply receives input power and converts it to the required power for the LED light source, but the power supply operates at an elevated temperature which restricts the maximum power output of the power supply
Solution Approach 1:
The patent repositions the power supply from a vertical arrangement (above the light source) to a horizontal arrangement (adjacent to the light source within the same housing plane). This spatial reconfiguration in another dimension allows the power supply to be closer to the opening while maintaining adequate thermal separation, thus enabling higher power output without exceeding temperature limits.
Solution Approach 2:
The patent incorporates a heat sink structure that pre-cools the power supply before it operates, and provides continuous thermal management. This preliminary thermal preparation allows the power supply to start at a lower temperature and maintain operation within safe temperature boundaries, enabling higher sustained power output.
2Ease of operation
If the power supply is positioned above the light source to maintain standard overall height, then the housing space is optimized, but the light source moves closer to the opening which increases glare and visibility of the light source
Solution Approach 1:
The patent changes the spatial arrangement from a vertical stacking configuration to a horizontal adjacent configuration. This allows the light source to be positioned deeper within the housing (increasing distance from opening) while the power supply sits adjacent rather than above, thus reducing glare and improving aesthetics without compromising the overall height profile.
Solution Approach 2:
Instead of placing the power supply above the light source (conventional arrangement), the patent inverts the vertical relationship and places the power supply adjacent to the light source at the same level. This inversion allows the light source to be positioned optimally deep within the housing for reduced glare, while the power supply occupies the previously unused adjacent space.
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 configuration enables higher power output while minimizing glare and improving aesthetics by isolating the power supply from heat and positioning the light source deeper within the housing.
Implementation Method 1
A LED light source is positioned within the recess of the housing assembly such that it emits light through the opening of the housing assembly
Data Source
AI summary
A recessed LED light fixture is provided. The fixture includes a housing assembly, a power supply, and a light source. The power supply is positioned below the light source relative to an opening of the housing from which light from the light source is emitted. The power supply is positioned on an exterior side of the housing and proximate a lower-most extent of the housing.