Reversible Battery Junction Box for Downlight Emergency Backup
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Solution Overview
Problem
Existing downlight fixtures without built-in battery backups require separate emergency backup systems, which are costly and inefficient, and do not allow for seamless integration with standard fixtures, leading to visible differences and increased installation costs.
Innovation Solution
A luminaire design that includes a reversible battery backup system, where a backup battery can be easily connected to existing downlights through a battery junction box, allowing the same fixture to function as both standard and emergency backup lighting without visible differences, using a snap-fit engagement mechanism for the battery junction box and access door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate emergency backup systems are used for downlight fixtures, then emergency lighting functionality is provided, but installation costs increase and visible differences appear between standard and emergency fixtures
Solution Approach 1:
The patent combines the standard downlight fixture and emergency backup system into a single integrated unit. The battery junction box is mounted within the existing downlight housing, and the emergency light engine shares the same fixture structure as the standard light engine. This merging eliminates the need for separate emergency fixtures and reduces installation complexity by using the same mounting infrastructure.
Solution Approach 2:
The downlight fixture is designed to serve dual functions: standard lighting operation and emergency backup lighting. The same fixture housing, mounting structure, and electrical connections are used for both modes. The battery junction box and emergency light engine are integrated into the existing fixture geometry, allowing the single fixture to universally provide both normal and emergency lighting without visible differences.
2Adaptability or versatility
If battery backup systems are integrated into existing downlights, then seamless integration is achieved, but modification complexity increases
Solution Approach 1:
The battery backup system is segmented into modular components: a battery junction box that mounts to the existing housing, separate wiring connections, and an emergency light engine. This segmentation allows the backup system to be added as discrete modules to the existing downlight without requiring complete redesign or complex integration of the entire fixture. The modular approach simplifies manufacturing and installation by breaking down the modification into manageable segments.
Solution Approach 2:
The battery junction box serves as an intermediary component that bridges the existing downlight electrical system and the new emergency backup components. It provides a mounting interface on the housing and electrical connection points that facilitate the integration of the emergency light engine and battery without requiring direct modification of the main fixture structure. This intermediary element simplifies the overall integration process.
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 provides a cost-effective and efficient way to convert standard downlights into emergency backup units, simplifying installation and inventory management by using the same fixture geometry for both types, reducing visible differences and installation costs, and allowing for flexible integration of battery backups as needed.
Implementation Method 1
a battery junction box is reversibly engaged to a back surface of the housing by snap fit engagement
Data Source
AI summary
A method of adding a backup power source to a luminaire that includes exposing driver circuitry through a back surface of a housing for a luminaire having a downlight geometry. The housing contains a light engine that is positioned to emit light through a light emission end of the housing. The driver electronics controls power received by the luminaire for powering the light engine. The method may continue with connecting a battery junction box having an electrical pathway opening in reversible engagement to the back surface of the housing by snap fit engagement. The method may further include connecting a backup battery unit to the luminaire by wiring extending from the battery backup unit through the electrical pathway opening in the junction box to the driver electronics for the luminaire.