Phosphor Wheel Brazed Substrate Heat Dissipation
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Solution Overview
Problem
Existing phosphor wheels and light source devices face limitations in cooling performance, leading to increased costs and noise due to the use of separate heat radiators and heat sinks, which also compromise reliability at high temperatures and speeds.
Innovation Solution
A phosphor wheel design featuring a first substrate with a phosphor ring and a second substrate with heat dissipation fins joined by brazing, where the second substrate is rotated to enhance heat dissipation, reducing the need for external cooling components and improving thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If separate heat radiators and heat sinks are used to cool the phosphor layer, then cooling performance is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges the heat dissipation function with the phosphor wheel structure by integrating heat dissipation fins directly onto the phosphor wheel substrate. This eliminates the need for separate heat radiators and heat sinks, reducing device complexity while maintaining effective cooling performance. The phosphor wheel itself becomes the heat dissipation component, combining multiple functions into a single integrated structure.
Solution Approach 2:
The phosphor wheel is designed to serve multiple functions: it acts as both the phosphor coating substrate and the heat dissipation structure. The heat dissipation fins integrated on the phosphor wheel substrate enable the same component to perform both optical conversion and thermal management, eliminating the need for dedicated separate cooling components.
2Temperature
If separate heat radiators and heat sinks are used to cool the phosphor layer, then cooling performance is improved, but cost increases
Solution Approach 1:
By combining the heat dissipation function into the phosphor wheel structure itself, the patent eliminates the need for additional separate components. This integration reduces the total number of parts, simplifies assembly processes, and lowers manufacturing costs while achieving effective cooling performance.
Solution Approach 2:
The phosphor wheel structure is designed to be self-sufficient for heat dissipation through its integrated fins, eliminating the need for external cooling components. This self-service approach reduces dependency on additional expensive cooling systems and simplifies the overall device architecture.
3Temperature
If separate heat radiators and heat sinks are used to cool the phosphor layer, then cooling performance is improved, but noise increases
Solution Approach 1:
The integration of heat dissipation fins onto the phosphor wheel eliminates the need for separate rotating heat sink components that generate noise. The phosphor wheel itself becomes the rotating heat dissipation element, reducing mechanical noise while maintaining effective thermal management.
4Temperature
If separate heat radiators and heat sinks are used to cool the phosphor layer, then cooling performance is improved, but reliability at high temperatures and speeds decreases
Solution Approach 1:
The integrated heat dissipation fins are directly mounted on the phosphor wheel substrate, creating a unified structure that operates as a single component. This integration improves reliability at high temperatures and speeds by eliminating the interfaces and potential failure points between separate heat radiator and phosphor wheel components.
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 enhances cooling performance while reducing costs and noise, ensuring reliable operation by integrating heat dissipation directly into the phosphor wheel structure, thus improving the efficiency and longevity of the light source.
Implementation Method 1
The excitation light source emits excitation light in a predetermined wavelength band. The inorganic binder phosphor layer emits fluorescent light upon irradiation with the excitation light.
Implementation Method 2
a plurality of heat dissipation fins disposed on the fourth main surface of the second substrate
Implementation Method 3
The second substrate is rotated to enhance heat dissipation
Implementation Method 4
The second main surface of the first substrate and the third main surface of the second substrate are joined by brazing
Data Source
AI summary
A phosphor wheel according to the present disclosure includes: a first substrate having a first main surface and a second main surface opposite to the first main surface, the first substrate including a metal material; a phosphor ring provided on the first main surface of the first substrate; a second substrate having a third main surface and a fourth main surface being opposite to the third main surface, the second substrate including a metal material; a plurality of heat dissipation fins disposed on the fourth main surface of the second substrate; and a motor mounted on the first substrate. The second main surface of the first substrate and the third main surface of the second substrate are joined by brazing. The motor is mounted on the first substrate with a gap interposed between the motor and the second substrate.