Light Fixture Adjustment Arm for Precise Positioning
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Solution Overview
Problem
Existing light fixtures with directional light scattering characteristics are often cumbersome and difficult to position, especially for large or linear systems, and current adjustable fixtures struggle with heat dissipation for LED light engines.
Innovation Solution
A light fixture design featuring a gear housing, optical housing, and an adjustment arm with independent rotation points and indexing grooves/teeth, allowing for precise positioning and thermal separation of LED components, enabling easy adjustment by a single person without specialized tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light fixtures are made adjustable to change light direction, then versatility is improved, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The adjustment mechanism is divided into discrete indexed positions rather than continuous adjustment, allowing the optical housing to be positioned at specific predetermined angles. This segmentation enables easy selection of light direction without complex continuous adjustment mechanisms.
Solution Approach 2:
An adjustment arm with indexing features (teeth and grooves) acts as an intermediary between the optical housing and mounting structure, providing predefined angular positions. This intermediary mechanism simplifies the adjustment process by offering discrete, easily selectable positions rather than requiring direct manual positioning.
2Adaptability or versatility
If light fixtures are made adjustable to change light direction, then versatility is improved, but device complexity increases
Solution Approach 1:
The adjustment mechanism uses discrete indexed positions with teeth and grooves instead of continuous adjustment components. This segmentation reduces mechanical complexity by eliminating the need for complex gears, motors, or continuous friction-based adjustment mechanisms.
Solution Approach 2:
The indexing mechanism uses simple, inexpensive features such as molded teeth and grooves in the adjustment arm and housing, rather than precision mechanical components. These simple features provide sufficient functionality without requiring complex manufacturing or assembly.
3Volume of moving object
If LED light engines are positioned close to heat-generating components, then compactness is improved, but temperature increases
Solution Approach 1:
The optical housing containing the LED light engine is physically separated from the gear housing containing heat-generating electronics by the adjustment arm. This extraction of the optical component from the thermal environment of the electronics allows for better heat dissipation while maintaining a compact overall fixture design.
Solution Approach 2:
The adjustment arm provides both mechanical adjustment functionality and thermal separation by positioning the optical housing in a different spatial location relative to the electronics. This dimensional separation allows the LED components to be thermally isolated from heat-generating components while maintaining fixture compactness.
Data Source
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AI summary
A light fixture (10) includes a gear housing (14), an optical housing (16), and an adjustment arm (12) connecting the gear housing (14) with the optical housing (16). The adjustment arm (12) is connected to the optical housing (16) and the gear housing (14) such that the adjustment arm (12) is rotatable relative to the gear housing (14) and the optical housing (16) is rotatable relative to the adjustment arm (12).