LED Thermal Management with Synthetic Jet Ejectors
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Solution Overview
Problem
Existing thermal management systems for LED-based illumination devices face challenges in reducing size while maintaining effective cooling performance, as they often require larger components and more complex designs to achieve efficient heat dissipation.
Innovation Solution
The integration of a synthetic jet ejector and heat sink into a single unit, with the synthetic jet ejector directing jets in orthogonal directions across heat fins, and utilizing the internal volume of components like Edison sockets to form nozzles for enhanced airflow, allows for compact designs with improved thermal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional thermal management systems are used for LED-based illumination devices, then effective cooling performance is achieved, but device size increases and design complexity increases
Solution Approach 1:
The patent combines the synthetic jet ejector and heat sink into a single integrated unit, eliminating the need for separate cooling components. This merging of functions allows effective heat dissipation while reducing overall device volume and design complexity.
Solution Approach 2:
The synthetic jet ejector directs jets in orthogonal directions across the heat fins, utilizing three-dimensional airflow patterns to enhance cooling efficiency within a compact form factor, rather than relying on single-direction airflow that would require larger component dimensions.
2Temperature
If conventional thermal management systems are used for LED-based illumination devices, then effective cooling performance is achieved, but device complexity increases
Solution Approach 1:
By integrating the synthetic jet ejector and heat sink into one unit, the patent reduces the number of separate components and assembly steps, thereby simplifying the overall design while maintaining effective cooling performance.
Solution Approach 2:
The integrated unit performs multiple functions simultaneously: the heat sink dissipates heat while the synthetic jet ejector provides active cooling through orthogonal jet directions. This multi-functionality reduces design complexity by eliminating the need for separate cooling systems.
3Temperature
If synthetic jet ejector directs jets in orthogonal directions across heat fins, then thermal performance is enhanced, but manufacturing complexity increases
Solution Approach 1:
The integration of the synthetic jet ejector and heat sink into a single unit allows for streamlined manufacturing processes, where the orthogonal jet directions are built into the unified structure rather than requiring assembly of multiple components with precise alignment.
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 configuration enables efficient heat dissipation in smaller form factors, reducing size and cost while maintaining or improving thermal management capabilities, allowing for more effective cooling of LED-based illumination devices.
Implementation Method 1
synthetic jet ejector directing jets in orthogonal directions across heat fins
Implementation Method 2
heat sink disposed between said light emitting portion and said connector module
Implementation Method 3
synthetic jet ejector directing jets in orthogonal directions across heat fins
Data Source
AI summary
An illumination device 1701 is provided which includes a light emitting portion 1703; an LED 1715 disposed within said light emitting portion; a threaded connector module 1705 adapted to rotatingly engage said illumination device to a source of electricity; a heat sink 1759 disposed between said light emitting portion and said connector module; and a synthetic jet ejector 1709 disposed between said light emitting portion and said connector module.