Ceiling Lighting Assembly with Below-Ceiling Junction Box
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Solution Overview
Problem
Ceiling-mounted LED lights are susceptible to heat gain and temperature fluctuations due to conventional above-the-ceiling junction boxes, which reduce their lifespan and require complex, costly installation processes, and do not provide a finished look.
Innovation Solution
A ceiling-mounted lighting assembly with a self-contained below-the-ceiling junction box that acts as a thermal barrier, using thermally insulating materials and a decorative trim to conceal the junction box, allowing for easy installation without conventional above-the-ceiling junction boxes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional above-the-ceiling junction boxes are used to mount ceiling lights, then electrical supply and mounting are provided, but heat gain and temperature fluctuations from attic air directly affect the LED lights, reducing their lifespan
Solution Approach 1:
The junction box is divided into two separate sections: an above-ceiling portion for electrical connections and a below-ceiling portion for mounting the light fixture. This segmentation allows the electrical components to remain in the attic space while the light fixture and heat-sensitive LED components are isolated in the conditioned living space below, preventing direct thermal coupling between attic heat and LED lights.
Solution Approach 2:
A thermal barrier (insulation material) is introduced between the above-ceiling junction box portion and the below-ceiling light fixture portion. This intermediary thermal barrier blocks heat transfer from the hot attic air to the LED light components, allowing electrical connections to pass through while preventing thermal coupling.
2Ease of manufacture
If conventional above-the-ceiling junction boxes are used, then electrical supply is provided, but the installation process becomes complex requiring large ceiling openings, support brackets, and professional electricians
Solution Approach 1:
The junction box, electrical wiring access, and light fixture mounting are merged into a single integrated unit. The above-ceiling portion provides electrical access while the below-ceiling portion provides mounting, combining functions that were previously separate into one assembly that simplifies installation.
Solution Approach 2:
The dual-section junction box serves multiple functions: it provides electrical connections through the ceiling, acts as a mounting structure for the light fixture, and serves as a thermal barrier. This multi-functional design eliminates the need for separate support brackets and complex wiring arrangements.
3Ease of operation
If conventional above-the-ceiling junction boxes are used, then mounting is provided, but the junction box appearance is unsightly and does not provide a finished look to the ceiling
Solution Approach 1:
The junction box is segmented so that the portion containing electrical connections remains in the attic space above the ceiling, while only the necessary mounting portion extends into the living space below. This allows the electrical box to be hidden while maintaining functional access.
Solution Approach 2:
The below-ceiling portion of the junction box is designed to resemble a standard ceiling light fixture mounting canopy, providing a finished aesthetic appearance that matches conventional installations while hiding the actual electrical junction box above the ceiling.
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
Prolongs the lifespan of LED lights by reducing thermal exposure and simplifies installation, making it user-friendly and aesthetically pleasing by minimizing attic air coupling and eliminating the need for complex ceiling openings.
Implementation Method 1
the first end of the below-the-ceiling junction box is operable as a thermal barrier between the above-the-ceiling area and the below-the-ceiling area; the ceiling-mounting surface of the first end is of a thermally insulating material
Data Source
AI summary
A ceiling mounted lighting assembly is disclosed having a below-the-ceiling junction box with a ceiling-mounting surface and a light socket disposed at least partially within the below-the-ceiling junction box; a terminal block disposed at least partially within the below-the-ceiling junction box and electrically couplable to the light socket; and at least one fastener coupled to the ceiling-mounting surface and extending in a direction away from the ceiling-mounting surface.