Adjustable Optic Lighting Device Assembly Heat Dissipation
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Solution Overview
Problem
Lighting devices with moveable LED fixtures face challenges in heat dissipation, leading to reduced brightness due to inefficient heat transfer, and adjusting the light beam direction often results in light loss as the fixture head moves, blocking the light source.
Innovation Solution
A lighting device assembly featuring a heat sink with a light source attached to one end and an optic assembly that includes a recess to house the light source, allowing the optic to pivot while maintaining the light source within the recess, thereby improving heat transfer and minimizing light loss during beam adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the LED component is mounted on a moveable structure to adjust light beam direction, then the adaptability is improved, but the heat transfer efficiency deteriorates
Solution Approach 1:
The patent divides the lighting device into separate functional components: a stationary heat sink assembly that remains fixed to the housing, and a moveable optic assembly that can rotate independently. This segmentation allows the heat sink to maintain optimal thermal contact with the LED while the optic rotates to adjust beam direction, resolving the contradiction between adaptability and heat transfer efficiency.
2Temperature
If the light source is mounted directly to a fixture housing of substantial mass for heat dissipation, then the heat transfer efficiency is improved, but the light beam direction cannot be adjusted
Solution Approach 1:
The patent separates the light source mounting from the housing by introducing an intermediate heat sink assembly. The light source is mounted to the heat sink, which provides substantial mass for heat dissipation, while the optic assembly that enables beam direction adjustment is separated and can rotate independently. This resolves the contradiction by allowing both effective heat sinking and beam direction adjustment.
3Adaptability or versatility
If the fixture head is moved to adjust light direction, then the adaptability is improved, but light loss increases due to blocking by the bezel or housing
Solution Approach 1:
The patent extracts the optic assembly from the moveable fixture head and makes it independently rotateable. The optic is separated from the housing structure, allowing it to rotate freely without the housing or bezel blocking the light path. This extraction eliminates light loss while maintaining the ability to adjust beam direction.
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 heat dissipation and maintains light intensity by keeping the light source at the focal point throughout its range of motion, reducing light loss and allowing for adjustable beam direction without blocking the light source.
Implementation Method 1
heat may not be efficiently transferred from the LED component through the moveable structure
Implementation Method 2
an optic having a recess configured to receive at least a portion of the light source, the optic being configured to pivot about the light source
Data Source
AI summary
A lighting device assembly includes: a heat sink; a light source attached to one end of the heat sink; and an optic assembly including an optic having a recess to receive at least a portion of the light source, the optic being configured to pivot about the light source while the portion of the light source remains within the recess.