Color Wheel Concave-Convex Structures Heat Dissipation
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Solution Overview
Problem
Conventional color wheels in projection devices face challenges in heat dissipation without increasing noise levels, which can lead to excessive temperature and reduced performance.
Innovation Solution
The implementation of a color wheel with a disc featuring concave-convex structures in the non-light converting region, which increases heat dissipation and air disturbing effects without adding noise, using materials like stainless steel, aluminum, or copper for effective thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a color wheel is continually irradiated by a light source, then the color wheel converts illumination beams into required color beams, but the operation temperature of the color wheel increases excessively
Solution Approach 1:
The color wheel is segmented into multiple regions including light converting regions and non-light converting regions. The non-light converting regions act as heat dissipation zones that do not absorb light energy, allowing thermal energy to be dissipated more effectively while maintaining the color conversion function in the light converting regions.
Solution Approach 2:
The patent introduces a temporal dimension by rotating the color wheel to periodically expose different regions to the light source. This rotational movement creates time-varying heat generation and dissipation patterns, allowing heat to be managed through both spatial distribution and temporal cycling, reducing peak temperatures.
2Loss of energy
If thermal conductive materials are used for the color wheel, then heat dissipation is improved, but operation noise increases
Solution Approach 1:
The color wheel structure itself serves dual functions: it performs color conversion in the light converting regions and acts as its own heat dissipation mechanism through the non-light converting regions. This self-service approach eliminates or reduces the need for additional active cooling systems that would generate noise, while still achieving effective heat management.
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 effectively reduces the operation temperature of the color wheel by 11-17% while maintaining noise levels, enhancing heat dissipation without increasing noise, even without the use of fans for cooling.
Implementation Method 1
The disc has a plurality of first disturbing portions and a plurality of second disturbing portions... effectively reduces the operation temperature of the color wheel by 11-17%... enhancing heat dissipation
Implementation Method 2
The disc has a plurality of first disturbing portions and a plurality of second disturbing portions... enhancing heat dissipation without increasing noise
Implementation Method 3
a material of the color wheel generally adopts a thermal conductive material such as stainless steel, aluminium, copper, etc., so as to decrease an operation temperature of the color wheel
Implementation Method 4
The disc has a plurality of first disturbing portions and a plurality of second disturbing portions... enhancing heat dissipation... without increasing noise
Data Source
AI summary
A color wheel is suitable for being disposed at a transmission path of an illumination beam emitted from a light source of a projection device. The color wheel includes a disc. The disc is suitable for rotating with respect to an axis. The disc has a non-light converting region and a light converting region. The disc has a first reference surface and a second reference surface opposite to the first reference surface. The disc has a plurality of first disturbing portions and a plurality of second disturbing portions. The first disturbing portions are located at the first reference surface and in the non-light converting region. The second disturbing portions are located at the second reference surface and in the non-light converting region. The first disturbing portions and the second disturbing portions are structurally continuous relative to the disc.