Directionally-Adjustable LED Spotlight with Ball-and-Socket Heat Sink
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Solution Overview
Problem
Existing LED spotlight fixtures face challenges in repositioning due to the fixed relationship between the heat sink and LED array, which complicates effective positioning and locking, especially at considerable heights, while maintaining efficient heat dissipation.
Innovation Solution
A directionally-adjustable LED spotlight design featuring a socket-shaped heat sink and a ball-shaped LED-array-bearing structure with a retention assembly, allowing for adjustable attachment and efficient heat transfer through a ball and socket mechanism, enabling easy repositioning while maintaining effective heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the heat sink is fixed in a fixed relationship to the LED array, then heat dissipation is effective, but the fixture becomes difficult to reposition and requires a tall structure
Solution Approach 1:
The fixture is divided into two separable components: a heat sink assembly and an LED array assembly. The LED array can be detached from the heat sink, allowing the LED array to be positioned independently at height while the heat sink remains accessible for heat dissipation. This segmentation resolves the contradiction by enabling easy repositioning while maintaining effective heat transfer through the thermal interface material and heat sink structure.
2Temperature
If the heat sink and LED array are combined into a fixed arrangement, then heat transfer is efficient, but the fixture height increases making positioning difficult
Solution Approach 1:
The design transitions from a vertical stacking arrangement (increasing height) to a lateral extension arrangement. The heat sink extends horizontally from the mounting surface, allowing the LED array to be positioned at height while the heat dissipation structure spreads out in the horizontal plane. This dimensional change maintains thermal efficiency through direct contact while reducing the vertical profile of the fixture.
3Adaptability or versatility
If an adjustable attachment is added between the LED array and heat sink, then repositioning becomes easy, but the heat transfer relationship may be compromised
Solution Approach 1:
A thermal interface material acts as an intermediary between the LED array and heat sink, maintaining thermal contact while allowing for adjustment and repositioning. This intermediary layer ensures continuous heat transfer pathways are preserved even when the LED array is repositioned, resolving the contradiction between adjustability and heat transfer reliability.
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
This design allows for safe and efficient operation of LEDs by ensuring reliable heat transfer and easy repositioning of the spotlight, overcoming the limitations of fixed heat sink configurations.
Implementation Method 1
heat management is a highly important criteria since LEDs produce heat that is directed primarily in the direction opposite from the light emanation. Therefore, it is desirable to have a heat sink or other heat dissipation apparatus located behind the LED array
Implementation Method 2
The ball and socket design allows for maximum contact between the heat sink and the LED-array-bearing structure thus facilitating the maximum transfer of heat to the heat sink
Implementation Method 3
the heat sink includes a plurality of fins extending outwardly from the ball-shaped LED-array-bearing structure. This construction from a heat conducting material facilitates the transfer of heat from the LEDs to the heat sink and the fins provide increased surface area from which the heat can dissipate
Data Source
AI summary
The inventive directionally-adjustable LED spotlight is comprised of a fixed heat sink and an LED-array-bearing structure. The LED-array-bearing structure is adjustably attached in a heat transfer relationship to the fixed heat sink.