Fluorescent Device Convex-Concave Heat Dissipation
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Solution Overview
Problem
Conventional fluorescent devices using semiconductor light sources suffer from wavelength shifting and decreased light emission intensity due to temperature increases, leading to luminosity deterioration, as they employ binders like transparent silicone or epoxy resin with low heat conductivity.
Innovation Solution
A fluorescent device is designed with a light-transmissible inorganic binder, such as Al2O3, and scattered fluorescent materials, featuring a convex-concave shape for enhanced heat radiation, preventing wavelength shifting and intensity loss by efficiently dissipating heat through cooling fins and a reflective layer to improve light projection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If resinous binder (silicone or epoxy resin) is used to form the light emission layer, then the fluorescent device can be manufactured with ease, but the heat conductivity is low causing temperature increase and wavelength shifting
Solution Approach 1:
The invention changes the material parameter from organic resinous binder to inorganic binder with different thermal properties, fundamentally altering the heat conductivity parameter to resolve the temperature increase issue while maintaining manufacturing feasibility
Solution Approach 2:
The invention uses a composite structure combining inorganic binder with fluorescent materials, creating a new material system that integrates both the structural integrity needed for manufacturing and the high heat conductivity required to prevent temperature increase
2Illumination intensity
If high intensity excitation light is used to improve luminosity, then the light output increases, but the temperature increases causing wavelength shifting and intensity decrease
Solution Approach 1:
The invention converts the harmful thermal effect of high-intensity excitation light into a manageable parameter by using the inorganic binder's high heat conductivity to channel and dissipate the generated heat, allowing high luminosity operation without temperature-induced wavelength shifting
Solution Approach 2:
By changing the thermal conductivity parameter of the binder material from low (resinous) to high (inorganic), the system can operate at high illumination intensities without the temperature increase that would otherwise cause wavelength shifting and intensity decrease
3Device complexity
If conventional resinous binder is used, then the device structure is simple, but the heat dissipation is poor leading to temperature quenching and luminosity deterioration
Solution Approach 1:
The invention changes the thermal parameter of the binder from low conductivity (resinous) to high conductivity (inorganic), fundamentally improving heat dissipation capability while maintaining the basic structural simplicity of the device
Solution Approach 2:
The inorganic binder serves dual functions: it binds the fluorescent materials together structurally and simultaneously acts as a heat dissipation pathway, eliminating the need for separate cooling structures and maintaining device simplicity while improving reliability
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 stabilizes light emission wavelengths and maintains light emission intensity, preventing temperature-induced luminosity deterioration, thus enhancing the performance and reliability of the fluorescent device and projector apparatus.
Implementation Method 1
A fluorescent device with a convex-concave shape on a surface opposite to the irradiation surface, formed from a light-transmissible inorganic material, which effectively radiates heat
Implementation Method 2
A fluorescent device according to a first aspect of the present invention comprises a fluorescent material which radiates emission light as the fluorescent material is irradiated with excitation light
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
A fluorescent device includes a fluorescent material (3) which radiates emission light as the fluorescent material is irradiated with excitation light, with a convex-concave shape (7) being provided on a surface (5) different from an irradiation surface (4) which is irradiated with the excitation light.