Composite Reflector Light Fixture Movable Housing

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Solution Overview

Problem

Existing light fixtures face challenges in easy installation and maintenance, particularly due to hard-to-reach ballast compartments and the need for substantial disassembly for access, which can damage the housing and alter optical characteristics, leading to maintenance difficulties and reduced fixture life.

Innovation Solution

A light fixture design featuring first and second housing members that are movable between closed and open positions, allowing for easy access to the ballast and electrical components without disassembly, with a composite reflector formed by interconnected reflector members that separate to provide barrier-free access to the lamp socket and ballast wiring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the housing and reflector are designed as integrated units for optimal optical performance, then optical efficiency is improved, but maintenance access and ease of repair deteriorate

Engineering Contradiction:
Improveoptical efficiencyVSAvoidmaintenance access
Core Design Contradiction:
Use of energy by moving objectVSEase of repair

Solution Approach 1:

The reflector is divided into multiple segments that can be independently moved or removed. When the housing is opened, the reflector segments separate to allow access to electrical components, while maintaining the integrated optical surface when closed for optimal light distribution.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If the ballast compartment is positioned in hard-to-reach areas to save space, then device compactness is improved, but ease of operation for maintenance deteriorates

Engineering Contradiction:
Improvefixture compactnessVSAvoidballast access
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The ballast compartment is designed with movable walls or panels that can be opened independently when the housing is in open position, allowing easy access to the ballast without requiring complete disassembly, while maintaining compact configuration during normal operation.

Inventive Principle:
Principle #15Dynamics

3Strength

If substantial disassembly is required for component access, then structural integrity is maintained, but ease of repair and installation deteriorates

Engineering Contradiction:
Improvehousing structural integrityVSAvoidinstallation simplicity
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The housing is divided into modular sections with standardized connection interfaces. Components such as the ballast compartment and lamp socket can be accessed by opening specific sections rather than complete disassembly, maintaining structural integrity while simplifying installation and maintenance.

Inventive Principle:
Principle #1Segmentation

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 installation, maintenance, and lamp replacement while maintaining optical efficiency and extending the life of the light fixture by allowing complete exposure of electrical connections without disassembly, reducing the risk of damage and altering optical characteristics.

Implementation Method 1

a composite reflector configured to envelope a light-emitting portion of the lamp to efficiently utilize the luminescence of the lamp to direct maximum light out through a lens

Methodology Applied
Scientific EffectReflection: Reflection

Data Source

PatentUS7354177B2Light fixture with composite reflector system
Publication Date: 2008.04.08 IDEAL IND LIGHTING LLC
  • US7354177B2 patent drawing
  • US7354177B2 patent drawing
  • US7354177B2 patent drawing

AI summary

A light fixture having first and second housing members movable between closed-fixture and open-fixture positions for lamp-changing purposes, in which a first reflector member is secured to the first housing member and includes a first connection-edge, a separate second reflector member is separately secured to the second housing member and includes a second connection-edge abutting the first connection-edge when the housing members are in closed-fixture position, and a lamp-opening is between the first and second connection-edges, such that, when the housing members are in closed-fixture position, the reflector members together form a composite reflector in the fixture housing.