Light Source Cooling Structure with Planar Fins and Covers
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Solution Overview
Problem
The miniaturization of light source devices, such as projectors, often restricts the space available for heat dissipation fins, leading to inadequate cooling of the light source and a need for improved cooling efficiency.
Innovation Solution
A cooling structure for light source devices that includes a heat dissipation plate, heat dissipation fins arranged in a specific pattern, and a blower fan that blows air toward the back surface of the heat dissipation plate, enhancing heat dissipation without protruding fins outside the plate edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat dissipation fins protrude from above and below a holding member, then cooling efficiency is improved, but device space requirements increase
Solution Approach 1:
The patent transitions from three-dimensional protruding fins to two-dimensional planar fins arranged in a matrix pattern on the holding member surface. This dimensional reduction allows the same heat dissipation function to be achieved within a constrained space, resolving the contradiction between cooling efficiency and device volume.
Solution Approach 2:
The patent extracts the essential heat dissipation function from the protruding fin structure and implements it through a simplified planar fin configuration. By taking out only the necessary heat dissipation capability rather than using full three-dimensional fins, the design achieves adequate cooling with reduced space requirements.
2Temperature
If heat dissipation fins are arranged densely to improve cooling, then cooling efficiency increases, but manufacturing precision requirements increase
Solution Approach 1:
The patent divides the heat dissipation function into multiple discrete planar fins arranged in a matrix pattern. This segmentation allows each fin to be manufactured independently with standard precision, avoiding the need for high-precision complex three-dimensional fin structures while maintaining effective heat dissipation through the collective action of multiple fins.
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 effectively improves the cooling efficiency of the light source even in space-restricted environments, ensuring optimal performance of light source devices and projectors.
Implementation Method 1
a blower fan disposed to face the back surface via the plurality of heat dissipation fins and blowing air toward the back surface
Implementation Method 2
a plurality of heat dissipation fins formed in a plate shape in which a first direction along a back surface of the heat dissipation plate opposite to the mounting surface is a thickness direction
Data Source
AI summary
A cooling structure for a light source device includes a light source, a heat dissipation plate having a mounting surface on which the light source is mounted, a plurality of heat dissipation fins arranged at intervals at intervals in a first direction along a back surface of the heat dissipation plate, and a blower fan that blows air toward the back surface via the plurality of heat dissipation fins. The plurality of heat dissipation fins are provided with a cover that is provided at each first end of the plurality of heat dissipation fines in a second direction along the back surface and covers a region corresponding to each distal end of the plurality of heat dissipation fins extending from the back surface toward the blower fan in a gap between the heat dissipation fins adjacent in the first direction. The plurality of first ends do not protrude outside the first edge of the heat dissipation plate in the second direction. An opening is formed at a position of the plurality of first ends corresponding to each basal end of the plurality of heat dissipation fins such that the gap between adjacent heat dissipation fins faces the outside of the plurality of heat dissipation fins.