Linear LED Fixture Waterproof Junction Box Design
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Solution Overview
Problem
Industrial LED lighting fixtures face challenges in harsh environments due to exposure to fluids and water, which can damage electrical components, and there is a need for a waterproof solution that provides efficient and accessible lighting.
Innovation Solution
A linear LED light fixture with a waterproof junction box formed between two end caps, featuring elastomeric gaskets for sealing, a heat sink for electronic circuitry, and a motion sensor with waterproof connections, designed to withstand high-pressure washdowns and provide efficient lighting in demanding conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lighting fixture is used in harsh industrial conditions with fluid exposure, then the lighting can reach remote or hard-to-access locations, but water or fluid exposure to electrical power cords, LEDs or associated electronic circuitry can have deleterious effects
Solution Approach 1:
The lighting fixture is divided into separate sealed modules: a waterproof housing containing LEDs, an interior end cap with junction box, and an exterior end cap. Each segment is independently sealed with gaskets to prevent fluid intrusion while maintaining overall functionality in harsh environments.
Solution Approach 2:
Waterproof gaskets serve as intermediary sealing elements between the housing and end caps, creating a barrier that prevents direct contact between water/fluids and electrical components. The gaskets mediate the connection while maintaining waterproof integrity.
2Reliability
If a junction box is placed away from the light fixture for safety, then electrical connections can be made safely, but the junction box becomes less accessible for maintenance and installation
Solution Approach 1:
The junction box is merged with the lighting fixture housing by forming it within the interior end cap, which is integrated into the waterproof housing assembly. This combines the electrical connection function with the lighting structure, making the junction box both safe and accessible during installation and maintenance.
3Device complexity
If LED electronic circuitry components are placed within the housing, then the lighting fixture can be compact and efficient, but the components become vulnerable to water and fluid damage
Solution Approach 1:
The heat sink containing LED electronic circuitry components is nested within the waterproof housing, which is further nested within the end cap assembly. This nested structure provides multiple layers of protection, allowing compact integration while shielding electronic components from water and fluid exposure through the waterproof barriers.
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
The solution ensures the protection of electrical components from water and fluids, providing reliable and efficient LED lighting in harsh environments while allowing for easy mounting and interconnection of fixtures.
Implementation Method 1
A heat sink supporting LED electronic circuitry components may extend from the interior end cap into the housing
Implementation Method 2
The first gasket may comprise an open-face groove that receives the end of the housing therein. The open-faced groove may be defined by elastomeric walls having an inward taper
Data Source
AI summary
A linear LED lighting fixture includes an elongated housing having a plurality of LEDs and a light transmissive cover. An interior end cap is attached to an end of the housing. An exterior end cap is attached to the interior end cap to form a junction box therebetween. Waterproof seals are formed between the housing and the junction box.