Light Engine Retrofit Kit with Mounting Brackets and Tethers
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Solution Overview
Problem
The installation of light engines, especially in large or heavy lighting systems, is difficult and often requires multiple installers due to size and accessibility issues, and existing light engines lack effective sealing mechanisms to prevent dust, dirt, and debris from entering the lens compartment, reducing performance and causing unsightly dark spots.
Innovation Solution
The development of installation kits that include mounting brackets, end caps, a retainer bracket, and a tether bracket to facilitate single-person installation of light engines into new or existing fixtures, along with sealing features such as flanges and ridges on the lens to prevent debris ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional installation methods are used for light engines, then the light engine can be installed, but multiple installers are required due to size and accessibility issues
Solution Approach 1:
The installation kit divides the installation process into manageable segments: mounting brackets are installed in the fixture first, then the light engine is attached to these brackets using retainer brackets and tethers. This segmentation allows a single installer to work with smaller, more manageable components rather than handling the entire heavy light engine at once.
Solution Approach 2:
The mounting brackets serve as intermediary components between the fixture housing and the light engine. These brackets are installed in the fixture first and provide attachment points that simplify the connection process. The retainer brackets and tethers act as additional intermediaries that allow the installer to secure and position the light engine gradually, making the installation process feasible for one person.
2Illumination intensity
If light engines are installed in high or hard-to-reach locations, then lighting coverage is improved, but installation becomes difficult and dangerous requiring multiple installers
Solution Approach 1:
The mounting brackets are installed in the fixture housing before the light engine is attached. This preliminary action creates secure anchor points in the fixture that are ready to receive the light engine. By preparing these attachment points in advance, the actual installation of the heavy light engine becomes safer and more manageable for a single installer working at height.
Solution Approach 2:
The mounting brackets and retainer brackets serve as intermediary components that bridge the gap between the fixed fixture structure and the movable light engine. These intermediaries provide secure attachment points that distribute the load and reduce the risk of injury during installation at high locations.
3Ease of manufacture
If light engines operate without sealing mechanisms, then manufacturing is simpler, but dust, dirt, and insects enter the lens compartment reducing performance
Solution Approach 1:
The lens is designed with localized sealing features including flanges at specific locations that engage with the wireway cover, and ridges at the lens periphery that abut the wireway cover edges. These local sealing structures are integrated into the lens design to prevent contaminant ingress without requiring complete redesign of the entire light engine assembly.
Solution Approach 2:
The sealing mechanism uses flexible sealing elements that can deform to accommodate manufacturing tolerances and thermal expansion. The flanges and ridges create flexible sealing interfaces that maintain their sealing function under varying operating conditions while preventing dust, dirt, and insect intrusion.
4Device complexity
If light engines lack sealing barriers, then device complexity is reduced, but contaminants accumulate causing unsightly dark spots and reduced output
Solution Approach 1:
The lens incorporates localized sealing features (flanges and ridges) at specific critical locations where contaminant ingress is most likely to occur. This approach provides effective sealing protection without adding complex sealing structures throughout the entire device, maintaining relative simplicity while preventing contaminant accumulation that causes dark spots and performance degradation.
Data Source
AI summary
Described are embodiments of a light engine installation kit and methods of installation that allow a single technician to install large, heavy, or awkwardly shaped light engines into new or existing fixture housings. The installation kits include mounting brackets that install into the fixture housing. The mounting brackets can then support the light engine by a retention tab at one end, and a tether at the other. In this intermediate position, an installer can complete the wiring before raising the light engine into its final position. Also described are lenses, wireway covers, reflectors, and end caps that provide improved sealing of the lens compartment of a light engine. The fitting of the parts provides better sealing to prevent dirt, debris, or insects from migrating into the lens compartment of the light engine and causing reduced light output or unsightly dark spots in the lens.