Spiral LED Mounting for Thermal Isolation
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Solution Overview
Problem
Current solid state lighting devices face challenges in maintaining energy efficiency and stable color output due to temperature variations, especially for light emitting diodes (LEDs), which affect their performance and lifespan, particularly in applications where access for replacement is difficult and costly.
Innovation Solution
The distribution of solid state light emitters in a three-dimensional arrangement, such as spirals, within a lighting device, which allows for thermal isolation and improved heat dissipation, along with a support structure that includes a ledge for enhanced contact and heat management, enabling better control over light distribution and thermal aspects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If solid state light emitters are arranged in a three-dimensional spiral configuration, then heat dissipation is improved and thermal isolation is achieved, but device complexity increases
Solution Approach 1:
The patent transitions from traditional two-dimensional planar arrangements of light emitters to a three-dimensional spiral configuration. This dimensional change allows light emitters to be distributed throughout a volumetric space rather than confined to a flat surface, enabling superior thermal isolation between emitters and more efficient heat dissipation pathways in multiple spatial directions.
Solution Approach 2:
The spiral configuration naturally segments the light emitter array into distinct radial and axial positions. Each light emitter occupies a unique location along the spiral path, creating automatic spatial segmentation that reduces thermal coupling between adjacent emitters while maintaining a compact overall device footprint.
2Volume of moving object
If multiple solid state light emitters are positioned in close proximity, then device size is reduced, but thermal management becomes more difficult
Solution Approach 1:
By arranging light emitters along a three-dimensional spiral path, the design packs multiple emitters into a compact volumetric space while maintaining adequate thermal spacing. The spiral geometry distributes emitters both radially and axially, achieving high emitter density without the thermal management problems associated with planar close-proximity arrangements.
Solution Approach 2:
The spiral configuration introduces curved, three-dimensional spacing between light emitters compared to flat linear arrangements. This curvature in the spatial distribution creates more uniform thermal fields and allows heat to dissipate more effectively in multiple directions, reducing hot spots while maintaining compact device dimensions.
3Stability of the object's composition
If light emitters are distributed in a three-dimensional arrangement, then color consistency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The three-dimensional spiral arrangement provides more degrees of freedom for optimizing light emitter positioning and orientation. This volumetric distribution allows for better control over light extraction paths and reduces directional dependence of color output, improving overall color consistency while the modular spiral structure facilitates systematic manufacturing processes.
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 approach enhances the energy efficiency and stability of light output, extends the lifespan of LEDs, and simplifies fabrication, while maintaining consistent color rendering index and luminous efficacy, making them suitable for various applications including replacing traditional lighting fixtures.
Implementation Method 1
a light emitting diode, and a light emitter positioning element on which the light emitting diode is positioned
Implementation Method 2
A challenge with solid state light emitters is that the performance of many solid state light emitters may be reduced when they are subjected to elevated temperatures. Various heat sinking schemes have been developed to dissipate at least some of the heat that is generated by the LED.
Data Source
AI summary
A lighting device comprising a light emitter positioning element and first and second solid state light emitters positioned on the first light emitter positioning element, at least a first portion of the first light emitter positioning element of a spiral shape. Also, a lighting device comprising first and second solid state light emitters and means for dissipating heat from them. Also, a method of assembling a lighting device, comprising positioning a first light emitter positioning element that comprises a ledge, so that at least a part of it is in contact with a support structure, at least first and second solid state light emitters being on the positioning element, and pressing the positioning element to bring it into contact with the ledge.