Wavelength Conversion Element Heat Dissipation Tooth Portions
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Solution Overview
Problem
The existing fluorescent color wheels in projection devices suffer from low heat dissipation efficiency, leading to reduced wavelength conversion efficiency and shortened service life due to inadequate heat management.
Innovation Solution
A wavelength conversion element with a heat dissipation member featuring a heat dissipation plate and heat dissipation tooth portions that clamp the substrate and disturb airflow to enhance heat dissipation, improving the thermal management of the wavelength conversion layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a substrate with good thermal conductivity is used to dissipate heat from the phosphor layer, then heat dissipation capacity is improved, but the heat dissipation efficiency remains insufficient due to limited substrate capabilities
Solution Approach 1:
The heat dissipation function is segmented into multiple components: the substrate provides baseline thermal conductivity, while additional heat dissipation plates and heat dissipation tooth portions are added to enhance heat dissipation efficiency through increased surface area and improved airflow, thereby resolving the contradiction between temperature control and service life
Solution Approach 2:
The heat dissipation structure transitions from a two-dimensional substrate surface to a three-dimensional structure with protruding heat dissipation tooth portions. This dimensional enhancement increases the heat dissipation surface area and creates airflow channels, significantly improving heat dissipation efficiency without compromising the substrate's structural integrity and service life
2Temperature
If the substrate material is optimized for thermal conductivity, then heat dissipation capacity is improved, but wavelength conversion efficiency decreases due to insufficient heat management
Solution Approach 1:
The heat dissipation function is segmented into multiple components: the substrate provides baseline thermal conductivity, while additional heat dissipation plates and heat dissipation tooth portions are added to enhance heat dissipation efficiency through increased surface area and improved airflow, thereby resolving the contradiction between temperature control and service life
Solution Approach 2:
Heat dissipation tooth portions act as intermediary structures between the substrate and the ambient air. These teeth enhance convective heat transfer by disrupting boundary layers and increasing airflow turbulence, serving as an effective mediator to improve heat dissipation capacity and thereby maintain wavelength conversion efficiency
3Device complexity
If the existing substrate structure is used, then device simplicity is maintained, but heat dissipation efficiency is insufficient leading to adhesive layer deterioration
Solution Approach 1:
The heat dissipation function is segmented into multiple components: the substrate provides baseline thermal conductivity, while additional heat dissipation plates and heat dissipation tooth portions are added to enhance heat dissipation efficiency through increased surface area and improved airflow, thereby resolving the contradiction between temperature control and service life
Solution Approach 2:
The heat dissipation tooth portions are pre-designed with optimized geometry and distribution to proactively enhance heat dissipation before adhesive layer deterioration occurs. This preliminary thermal management prevents excessive temperature buildup that would otherwise degrade the adhesive layer, maintaining reliability without significantly increasing device complexity
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 significantly increases the heat dissipation efficiency of the wavelength conversion element, enhancing both its reliability and wavelength conversion efficiency, thereby improving image brightness and extending the service life of the projection device.
Implementation Method 1
the heat dissipation tooth portions can disturb the surrounding airflow when the wavelength conversion element rotates and then quickly dissipate the heat of the substrate and the wavelength conversion layer
Implementation Method 2
The wavelength conversion layer is used to convert the excitation beam into a converted beam
Data Source
AI summary
A wavelength conversion element includes a substrate, a wavelength conversion layer and a heat dissipation member. The substrate has a supporting surface. The wavelength conversion layer is disposed on the supporting surface. The heat dissipation member is disposed on the supporting surface and is surrounded by the wavelength conversion layer. The heat dissipation member has a heat dissipation plate and a plurality of heat dissipation tooth portions. The heat dissipation plate is fixed on the supporting surface. The heat dissipation plate has an outer side surface. The outer side surface is perpendicular to the supporting surface. The heat dissipation tooth portions are respectively connected to the outer side surface. A projection device including the wavelength conversion element is also provided. The wavelength conversion element can improve wavelength conversion efficiency and reliability, and the projection device can improve image brightness and service life.