Vibration-Driven Airflow Cooling for LED Headlamp Packages
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Solution Overview
Problem
Conventional cooling methods for light emitting device packages in vibration generating machines, such as head lamps, face inefficiencies with passive cooling methods and require additional energy and space with forced cooling methods, leading to potential overheating and reduced LED lifespan.
Innovation Solution
A cooling device utilizing a heat releasing plate and a vibrator connected by an elastic vibration transfer unit, where the vibrator generates airflow through machine vibrations to enhance heat dissipation, eliminating the need for external cooling fans or pumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If passive cooling method using heat sink is used, then device complexity is reduced, but cooling efficiency is insufficient
Solution Approach 1:
The patent applies mechanical vibration principle by utilizing the vibration of the vibration generating machine to drive air flow through the heat sink. The heat sink is designed with vibration transmission structures that convert the machine's vibration into airflow, enhancing heat dissipation without requiring additional active cooling components. This resolves the contradiction by maintaining simple device structure while significantly improving cooling efficiency through vibration-induced convection.
2Temperature
If forced cooling method using cooling fan or pump is used, then cooling efficiency is improved, but energy consumption and space requirements increase
Solution Approach 1:
The patent implements self-service principle by designing the cooling system to utilize the vibration generating machine's own vibration for cooling purposes. The heat sink structure includes vibration transmission elements that automatically convert the machine's operational vibration into effective airflow for heat dissipation. This eliminates the need for separate cooling fans or pumps, achieving high cooling efficiency without additional energy consumption or space requirements.
3Temperature
If forced cooling method using cooling fan or pump is used, then cooling efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies merging principle by integrating the cooling function directly into the heat sink structure and combining it with the vibration transmission system. The heat sink includes built-in vibration transmission structures that leverage the machine's existing vibration to generate cooling airflow. This integration eliminates the need for separate cooling components, achieving enhanced cooling efficiency while maintaining simple device structure.
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 solution provides improved cooling efficiency compared to passive methods and reduces energy consumption and space requirements, maintaining the LED package at a safe temperature without external energy use, thus enhancing the lifespan and usability of the light emitting device.
Implementation Method 1
a vibrator disposed to face the heat releasing plate and vibrating to generate an air flow according to vibration of the vibration generating machine
Implementation Method 2
a heat releasing plate provided at one side of the light emitting device package
Data Source
AI summary
A cooling device for a light emitting device package of a vibration generating machine, includes: a heat releasing plate provided at one side of the light emitting device package; a vibrator disposed to face the heat releasing plate and vibrating to generate an air flow according to vibration of the vibration generating machine; and a vibration transfer unit configured to connect the vibrator and the heat releasing plate to allow the air flow generated from the vibrator to be transferred to the heat releasing plate so as to be cooled.