Light Emitting Device Cooling Unit Flow Path Regulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light emitting devices with forced air cooling mechanisms experience temperature variations due to turbulence in gas flow, leading to uneven light output.
Innovation Solution
A light emitting device with a cooling unit that uses compressed gas to reduce fluid energy through a specific flow path configuration, including an introduction portion, a circulation portion with intersecting flow paths, and a heat exchange portion, to suppress turbulence and maintain uniform gas flow, thereby reducing temperature variations and ensuring consistent light output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If compressed air is used for forced air cooling, then cooling efficiency is improved, but turbulence is generated in the gas flow causing temperature variations
Solution Approach 1:
A flow path regulation mechanism is introduced as an intermediary between the compressed air source and the heat radiation member. This mechanism includes a flow path regulator that adjusts and stabilizes the gas flow before it reaches the heat radiation member, preventing turbulence while maintaining cooling efficiency
Solution Approach 2:
The flow path configuration is modified to include expansion sections and direction change sections that gradually adjust the gas flow parameters. The flow path area is increased in specific sections to reduce flow velocity and turbulence, while the gas flow direction is changed progressively rather than abruptly
2Productivity
If high flow rate gas is provided to heat radiation member, then heat discharge is improved, but temperature difference between hot and cool portions increases
Solution Approach 1:
The flow path is segmented into multiple sections with different functions: a first flow path section for initial gas flow, a second flow path section with expanded area for flow regulation, and a third flow path section for final direction control. This segmentation allows progressive adjustment of flow characteristics
Solution Approach 2:
The flow path is designed to extend in multiple spatial dimensions rather than a straight line. The gas flow is directed to move in different directions through the flow path sections, increasing the path length and allowing more gradual flow regulation while maintaining high flow rate
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 achieves a uniform light output by minimizing temperature variations in the light source, maintaining a temperature difference within 10°C, and efficiently transferring heat from the light source to the gas, enhancing the light emitting device's performance.
Implementation Method 1
a heat exchange portion that causes the gas to receive the heat generated by the light source unit
Implementation Method 2
a cooling unit provided in the housing to discharge heat to an outside of the housing by means of a gas
Data Source
AI summary
A light emitting device includes a housing; a light source unit; and a cooling unit provided in the housing to discharge heat to an outside of the housing by means of a gas, the heat being generated by the light source unit. The cooling unit includes an introduction portion, a heat exchange portion, and a circulation portion that guides the gas from the introduction portion to the heat exchange portion. The circulation portion includes a first flow path receiving the gas from the introduction portion, and a second flow path receiving the gas from the first flow path, and being connected to the heat exchange portion. The first flow path includes a portion having a flow path area larger than a flow path area of the introduction portion.