Light Source Device Elastic Fixation Phosphor Heat Transfer
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Solution Overview
Problem
Existing light source devices for projectors face challenges in achieving stable fluorescence intensity due to inadequate heat transfer and dimensional errors, leading to potential phosphor damage and inconsistent performance.
Innovation Solution
A light source device design featuring a light emitting element, a wavelength conversion member with a phosphor, a support member, fixation members made of elastic material, and spacer members to securely position and separate components, ensuring appropriate force distribution and heat transfer without adhesive intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the adhesive force of the phosphor is increased to improve heat transfer, then the temperature control is improved, but the phosphor may be damaged due to excessive load
Solution Approach 1:
The invention changes the parameter of bonding mechanism from adhesive bonding to mechanical interference bonding. The recess structure allows the phosphor to be mechanically interlocked with the holder, providing sufficient holding force without excessive adhesive strength that could damage the phosphor while maintaining effective thermal contact.
2Loss of energy
If the phosphor is fixed directly to the holder without adhesive to improve heat transfer efficiency, then the heat transfer is improved, but the stability of fixation is worsened
Solution Approach 1:
The recess structure acts as an intermediary mechanism between the phosphor and holder. It provides mechanical interlocking without requiring adhesive materials, thereby maintaining direct thermal contact for efficient heat transfer while ensuring stable fixation through geometric constraint.
3Ease of manufacture
If dimensional errors occur in manufacturing to reduce production cost, then the manufacturing ease is improved, but the contact force between rib and phosphor becomes unstable
Solution Approach 1:
The recess structure in the holder serves as a cushioning mechanism that compensates for dimensional errors in the phosphor or rib. The recess provides clearance and adjustment room, allowing the assembly to accommodate manufacturing variations while maintaining stable contact force between the rib and phosphor.
4Temperature
If the phosphor is pressed too strongly by the rib to ensure good contact, then the heat transfer is improved, but the phosphor may be damaged
Solution Approach 1:
The invention changes the pressure distribution parameter by using the recess structure to distribute the contact force over a larger area and control the compression level. This ensures adequate thermal contact without concentrating excessive force that could damage the phosphor structure.
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 stabilizes fluorescence intensity, prevents phosphor damage, and enhances reliability by effectively managing heat transfer and absorbing dimensional errors, resulting in a projector with improved efficiency and reduced size.
Implementation Method 1
The fixation member is configured including an elastic member, and is configured to fix the support member to the substrate in a state of pressing the third surface toward the first surface
Implementation Method 2
a wavelength conversion member which includes a phosphor, and which is configured to convert the first light emitted from the light emitting element into second light having a second wavelength band different from the first wavelength band
Data Source
AI summary
A light source device according to the present disclosure includes a light emitting element, a substrate having a first surface and a second surface, a wavelength conversion member which includes a phosphor, a support member having a third surface having contact with the first surface of the substrate, and a fourth surface located at an opposite side to the third surface, and configured to support the wavelength conversion member, a fixation member configured to fix the support member to the substrate, and a spacer member having contact with each of the substrate and the wavelength conversion member to hold the light emitting element and the wavelength conversion member at positions separated from each other. The fixation member is configured including an elastic member, and is configured to fix the support member to the substrate in a state of pressing the third surface toward the first surface.