Phosphor Rod Support Structure for Heat Dissipation in Projectors
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Solution Overview
Problem
The existing light source devices using a phosphor rod face challenges in effectively transferring heat generated during fluorescence emission, leading to excessive phosphor rod temperatures and reduced wavelength conversion efficiency due to temperature quenching.
Innovation Solution
A light source device design incorporating a support member with a heat transfer member that extends in a direction intersecting the longitudinal direction of the light guide member, featuring higher thermal conductivity than the holding section, to efficiently transfer and radiate heat away from the phosphor rod.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a phosphor rod is used to convert excitation light into fluorescence, then wavelength conversion is achieved, but heat generated in the phosphor rod causes excessive temperature rise and temperature quenching, reducing conversion efficiency
Solution Approach 1:
The support member is segmented into a holding section and a heat transfer member. The heat transfer member is disposed inside the holding section and extends in a direction intersecting the longitudinal direction of the light guide member, creating multiple heat dissipation pathways that segment the heat transfer process and prevent temperature concentration in the phosphor rod.
Solution Approach 2:
The heat transfer member acts as an intermediary between the phosphor rod and the external environment. With higher thermal conductivity than the holding section, it mediates heat transfer from the phosphor rod, conducting heat away efficiently while the holding section provides mechanical support and structural stability.
2Ease of manufacture
If the phosphor rod is rod-shaped, then it is easy to manufacture and install, but heat transfer in directions intersecting the longitudinal direction is difficult, leading to excessive temperature
Solution Approach 1:
The heat transfer member extends in a second direction that intersects the longitudinal direction of the light guide member. This dimensional change creates heat dissipation pathways that are not aligned with the phosphor rod's longitudinal axis, enabling efficient heat transfer in multiple directions simultaneously while maintaining the simple rod-shaped phosphor rod design.
3Temperature
If heat transfer is improved by adding a heat transfer member, then temperature control is enhanced, but device complexity increases
Solution Approach 1:
The heat transfer member and holding section are merged into a single integrated support member structure. The heat transfer member is disposed inside the holding section, combining mechanical support and heat transfer functions in one component, which reduces overall device complexity compared to having separate heat sink and support structures.
Solution Approach 2:
The support member is designed with multi-functionality: the holding section provides mechanical support and positioning, while the heat transfer member provides thermal management. This universal design allows a single component to fulfill multiple functions, reducing the need for additional separate parts and simplifying the overall device 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 design effectively manages heat transfer, preventing excessive phosphor rod temperatures and maintaining high wavelength conversion efficiency by ensuring efficient heat dissipation.
Implementation Method 1
a heat transfer member extending in a second direction intersecting the longitudinal direction; and a holding section configured to hold the heat transfer member, the heat transfer member is disposed on an inside of the holding section, and thermal conductivity of the heat transfer member is higher than thermal conductivity of the holding section
Implementation Method 2
a light guide member on which the light emitted from the light emitting element is made incident, the light guide member emitting the light
Data Source
AI summary
A light source device according to an aspect of the present disclosure includes a light source unit including a light emitting element configured to emit light, a light guide member on which the light emitted from the light emitting element is made incident, the light guide member emitting the light, and a support member configured to support the light guide member. The support member includes a support surface facing a first direction intersecting a longitudinal direction, which is a direction in which the light guide member extends, and configured to support the light guide member, a heat transfer member extending in a second direction intersecting the longitudinal direction, and a holding section configured to hold the heat transfer member, the heat transfer member is disposed on the inside of the holding section, and the thermal conductivity of the heat transfer member is higher than the thermal conductivity of the holding section.