LED Waveguide Edge Optics for Serviceable Canopy Fixtures
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Solution Overview
Problem
Existing canopy-mounted light fixtures face challenges in servicing and replacing components like LED drivers due to their overhead positioning, which complicates maintenance and is not suitable for installations with close beam interference.
Innovation Solution
A light fixture design with a driver assembly above the canopy sheet and a light-emitting assembly below, allowing for detachable components and easy servicing by removing the driver downward through the base portion, along with optical structures for controlled light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the driver assembly is positioned above the canopy sheet for aesthetic purposes, then the light fixture appearance is improved, but the ease of servicing deteriorates
Solution Approach 1:
The light fixture is divided into separable modules: a driver assembly positioned above the canopy sheet and a light-emitting assembly positioned below. This segmentation allows the driver assembly to remain in its aesthetically pleasing overhead position while enabling service personnel to access and replace components by removing the light-emitting assembly from below the canopy sheet.
Solution Approach 2:
The light-emitting assembly is designed to be detachably connected to the driver assembly, allowing it to be extracted or removed from below the canopy sheet. This extraction mechanism enables service personnel to access the driver assembly for maintenance without requiring access from above the canopy sheet, thus resolving the contradiction between aesthetic positioning and servicing ease.
2Ease of repair
If the light-emitting assembly is detachably secured to the driver assembly, then the ease of servicing is improved, but the device complexity increases
Solution Approach 1:
The light fixture is divided into separable modules: a driver assembly positioned above the canopy sheet and a light-emitting assembly positioned below. This segmentation allows the driver assembly to remain in its aesthetically pleasing overhead position while enabling service personnel to access and replace components by removing the light-emitting assembly from below the canopy sheet.
Solution Approach 2:
The light-emitting assembly is designed to be detachably connected to the driver assembly, allowing it to be extracted or removed from below the canopy sheet. This extraction mechanism enables service personnel to access the driver assembly for maintenance without requiring access from above the canopy sheet, thus resolving the contradiction between aesthetic positioning and servicing ease.
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
Facilitates easy servicing and replacement of components while maintaining aesthetic appeal, and provides flexible installation options and controlled light emission patterns.
Implementation Method 1
an optic covering the LED array, the optic comprising an arrangement of optical structures for providing one or more down lighting distributions from the LED array, and a waveguide edge for providing one or more up-lighting distributions from the LED array
Implementation Method 2
an arrangement of optical structures for providing one or more down lighting distributions from the LED array
Data Source
AI summary
An optic for a light-emitting diode (LED) array comprises an arrangement of optical structures for providing down lighting distribution from the LED array and a waveguide edge for providing up-lighting distribution from the LED array. Luminaires are described comprising an LED array and the optic. An overhead light fixture includes a driver assembly and a light-emitting assembly. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.