LED Area Lighting Fixture With Pivotable Driver Door
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Solution Overview
Problem
There is a need for LED-based area-lighting fixtures that provide an improved balance of energy efficiency, heat dissipation, distribution pattern, aesthetics, and installer convenience, particularly for large area illumination such as parking lots and streets, where existing high-intensity discharge lamps are being replaced by LED technology.
Innovation Solution
The design includes an integrally formed unitary housing with separate illuminating and wiring compartments, featuring a frame and lens for light emission, a reflector for light distribution, and a pivotable door for driver accessibility, along with a mounting arm for easy installation and maintenance, utilizing materials like aluminum for effective heat dissipation and a mounting system that allows for secure attachment to poles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED technology is used to replace high-intensity discharge lamps, then energy efficiency is improved, but heat dissipation becomes more challenging
Solution Approach 1:
The housing is divided into a first portion containing the illuminating compartment with LEDs and a second portion containing the wiring compartment, allowing separate thermal management zones. The illuminating compartment can be designed with specific heat dissipation features while isolating sensitive wiring components from thermal exposure.
Solution Approach 2:
A reflector is positioned between the LEDs and the surrounding environment to redirect light and heat away from sensitive areas. The reflector serves as an intermediary element that manages both optical output and thermal radiation from the LED array.
2Manufacturing precision
If the housing is made as an integrally formed unitary structure, then manufacturing precision and structural strength are improved, but ease of repair and component accessibility worsen
Solution Approach 1:
While the housing is integrally formed for structural integrity, it incorporates a pivotable door that creates an accessible opening into the wiring compartment. This segmented access point allows repair personnel to reach internal components without disassembling the entire housing structure.
Solution Approach 2:
The door is pivotably attached to the housing, allowing it to rotate between a closed position (maintaining structural integrity and aesthetics) and an open position (providing access to wiring and driver components for installation and maintenance).
3Ease of operation
If the driver is mounted to a pivotable door, then ease of operation and maintenance accessibility are improved, but device complexity increases
Solution Approach 1:
The driver is mounted directly to the interior surface of the door, combining the mounting function with the door structure itself. This eliminates the need for separate mounting brackets or fastening mechanisms, reducing overall device complexity while maintaining easy accessibility.
4Reliability
If separate illuminating and wiring compartments are provided, then reliability and heat management are improved, but device complexity increases
Solution Approach 1:
The housing is designed as an integrally formed unitary structure that simultaneously provides both the illuminating compartment and the wiring compartment as separate, thermally isolated spaces. This unified construction achieves compartment separation for reliability and thermal management without requiring multiple separate housing pieces, thereby avoiding increased device complexity.
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 enhances energy efficiency, heat management, and installer convenience, enabling single-person installation and reducing maintenance costs while providing customizable light distribution patterns and improved aesthetics.
Implementation Method 1
The illuminating compartment houses a plurality of light emitting diodes
Implementation Method 2
The illuminating compartment houses a plurality of light emitting diodes and a reflector
Implementation Method 3
utilizing materials like aluminum for effective heat dissipation
Data Source
AI summary
An LED light fixture includes an integrally formed unitary housing having a first portion and second portion laterally adjacent to one another. The first and second portions at least partially define separate illuminating and wiring compartments. The illuminating compartment houses a plurality of light emitting diodes and a reflector. The illuminating compartment is partially defined by a frame and a lens mounted to the first portion of the housing. The wiring compartment has at least one wall defined by a door. The door is pivotably attached to the housing. A driver for the plurality of light emitting diodes is mounted to the door for movement with the door.