Phosphor Wheel Radial Blades for Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Projection-type image display devices face challenges in effectively cooling phosphor wheels, which leads to increased temperature and reduced light emission efficiency, as well as motor deterioration due to inadequate heat management.
Innovation Solution
A phosphor wheel device incorporating a disc-shaped substrate with phosphor disposed circumferentially, a motor for rotational driving, and a fan member with blades extending radially to generate an air flow for cooling, integrated within a housing with heat exchange elements to efficiently dissipate heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the phosphor wheel rotates at high speed to improve light emission efficiency, then the light emission efficiency is improved, but the heat generated by the phosphor and motor increases causing temperature rise and motor deterioration
Solution Approach 1:
The cooling system is segmented into multiple functional components: rotating blades attached to the phosphor wheel for direct cooling, stationary blades positioned around the motor for motor cooling, and heat exchange elements in the housing for heat dissipation. This segmentation allows simultaneous cooling of different heat-generating components while maintaining high-speed rotation for light emission efficiency
Solution Approach 2:
Air acts as an intermediary cooling medium that transfers heat from the phosphor wheel and motor to the heat exchange elements. The air flow is generated by the rotating and stationary blades, creating a convection current that continuously removes heat while allowing the phosphor wheel to maintain high rotation speeds for efficient light emission
2Temperature
If cooling structures are added to the phosphor wheel device, then heat dissipation is improved, but the device complexity increases
Solution Approach 1:
The cooling functionality is merged with the existing phosphor wheel structure by attaching blades directly to the wheel. The stationary blades are integrated into the housing structure, and the heat exchange elements are incorporated into the existing housing. This merging approach provides effective heat dissipation while minimizing additional structural complexity
Solution Approach 2:
The housing serves multiple functions: it encloses the phosphor wheel device, provides structural support, and incorporates heat exchange elements for thermal management. The rotating blades serve both as cooling elements and as part of the phosphor wheel assembly. This multi-functionality reduces overall device complexity while maintaining effective heat dissipation
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 effectively cools the phosphor wheel and substrate, maintaining light emission efficiency and extending the lifespan of the motor by efficiently managing heat generated during excitation, thereby enhancing the performance and durability of the projection-type image display device.
Implementation Method 1
The plurality of blades are fixed to the other surface of the substrate so as to be integrally rotated with the phosphor wheel, and extend in a radial direction of the phosphor wheel from an axis of rotation of the motor
Implementation Method 2
The plurality of blades are fixed to the other surface of the substrate so as to be integrally rotated with the phosphor wheel, and extend in a radial direction of the phosphor wheel from an axis of rotation of the motor
Implementation Method 3
A phosphor wheel device accommodating housing according to this disclosure has a heat exchange element and hermetically accommodates the above-mentioned phosphor wheel device therein
Data Source
AI summary
A phosphor wheel device includes: a phosphor wheel; a motor; and a plurality of blades. The phosphor wheel has: a disc-shaped substrate; and a phosphor disposed on one surface of the substrate in a circumferential direction. The motor rotatably drives the phosphor wheel. The plurality of blades are fixed to the other surface of the substrate so as to be integrally rotated with the phosphor wheel, and extend in a radial direction of the phosphor wheel from an axis of rotation of the motor.