Junction Box LED Downlight Housing With Recessed-Look Trim
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Solution Overview
Problem
Existing LED downlights require costly recessed housings for fireproof installations, which are not compatible with standard junction boxes and necessitate additional planning and costs in new construction applications.
Innovation Solution
A surface-mounted LED downlight design that fits within a standard junction box, utilizing a hat-shaped light housing with fitting holes for secure attachment and a removable trim plate to conceal installation components, achieving a recessed appearance without custom recessed housings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If custom recessed housings are used for LED downlights to achieve fireproof installation, then fire safety is improved, but installation cost and complexity increase
Solution Approach 1:
The light housing is designed to perform multiple functions: it provides structural support for the LED engine, ensures fireproof installation through the hat-shaped configuration that fits standard junction boxes, and enables surface-mounted installation without requiring custom recessed housings. This universal design resolves the contradiction by making a single housing type suitable for both fire safety requirements and simple installation.
Solution Approach 2:
The light housing is divided into a hat-shaped configuration with a brim portion and hat body portion, allowing it to be installed over standard junction boxes. The brim portion fits over the junction box while the hat body portion contains the LED engine, enabling fireproof installation through segmentation rather than requiring a completely custom recessed housing.
2Reliability
If custom recessed housings are used for LED downlights to meet fire-rated assemblies, then fire rating compliance is improved, but cost increases
Solution Approach 1:
The hat-shaped light housing is designed to be universally compatible with standard junction boxes while meeting fire rating requirements. This eliminates the need for expensive custom recessed housings, as the same housing design achieves both fire compliance and compatibility with widely available standard junction boxes, thereby reducing cost.
Solution Approach 2:
Instead of creating custom recessed housings for each fire-rated application, the invention uses a standardized hat-shaped housing design that can be copied and installed over standard junction boxes. This copying approach maintains fire rating compliance while avoiding the high costs associated with custom manufacturing.
3Ease of manufacture
If surface-mounted installation is used for LED downlights to reduce cost, then installation cost is reduced, but recessed appearance is lost
Solution Approach 1:
The trim plate acts as an intermediary component that covers the brim portion of the hat-shaped light housing. This mediator element provides the desired recessed appearance by concealing the surface-mounted installation structure, while the actual installation remains cost-effective surface-mounted rather than requiring expensive custom recessed housings.
4Ease of manufacture
If standard junction boxes are used for LED downlight installation to reduce cost, then cost is reduced, but compatibility with LED downlights is poor
Solution Approach 1:
The light housing is segmented into a hat-shaped configuration where the brim portion is specifically designed to fit over standard junction boxes. This segmentation allows the housing to adapt to standard junction box dimensions and mounting patterns, improving compatibility while maintaining cost-effectiveness by using widely available standard components.
Solution Approach 2:
The hat-shaped light housing changes its structural parameters to accommodate standard junction boxes. The brim portion is designed with specific dimensions and mounting hole patterns that match standard junction boxes, enabling compatibility through parameter adaptation rather than requiring custom junction boxes for each LED downlight application.
Data Source
AI summary
A recessed LED downlight with surface mount installation on a junction box may comprise a light housing, a light engine housing, and a trim plate. The light housing may be a hat shape and comprise a brim portion and a hat body portion. The light engine housing may be installed inside the hat body portion. The brim portion may include fitting holes that are sized to receive one or more fixing members for connection with the junction box. The trim plate may be installed to the light housing in a removable manner, and the trim plate may cover the brim portion to shield the fitting holes.