Projection Device Heat Dissipation via Spatial Segmentation
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Solution Overview
Problem
Ultra-short focal projectors face heat dissipation challenges due to hot air recirculation when placed adjacent to walls, as the designed air outlets and inlets lead to increased internal component temperatures.
Innovation Solution
The projection device is designed with a housing that divides the accommodation space into areas based on the optical axis, placing heat dissipation modules adjacent to air inlets and the air outlet on the opposite side, preventing hot air recirculation and enhancing heat dissipation by using multiple heat dissipation fin assemblies and heat pipes connected to light source modules, along with system fans and air guides to direct airflow effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the air outlet and air inlet are designed with inclined ribs for hidden internal arrangement, then the aesthetic appearance is improved, but hot air recirculation occurs causing internal component temperature to increase
Solution Approach 1:
The housing internal space is segmented into a first area containing light source modules and a second area containing other components, with dedicated air inlets for the first area and a separate air outlet for the second area. This spatial segmentation prevents hot air recirculation to the light source modules while maintaining the aesthetic hidden rib design on external surfaces.
Solution Approach 2:
Different regions of the housing are assigned different functional qualities: the first side cover and rear cover have air inlets positioned to supply cool air to light source modules, while the second side cover has an air outlet positioned to exhaust hot air from other components. This local functional differentiation resolves the heat recirculation issue without compromising overall aesthetic design.
2Temperature
If multiple heat dissipation modules are added to improve heat dissipation, then heat dissipation effect is improved, but device complexity increases
Solution Approach 1:
The housing structure itself is designed to serve as the heat dissipation system, with air inlets and outlets integrated into the side covers and rear cover. The housing walls and internal partitions act as heat conduction paths, merging the structural and thermal management functions into a unified design that avoids additional complex heat dissipation components.
Solution Approach 2:
The housing performs multiple functions simultaneously: it provides mechanical protection, defines the aesthetic appearance with hidden ribs, and serves as the heat dissipation system through integrated air flow paths and heat conduction structures. This multi-functionality reduces the need for separate dedicated heat dissipation components.
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 significantly improves heat dissipation by ensuring that heat generated by light source modules is efficiently directed away from the internal components, maintaining optimal operating temperatures and preventing hot air from flowing back into the projector.
Implementation Method 1
heat pipes connected to light source modules
Implementation Method 2
heat dissipation fin assemblies and heat pipes connected to light source modules
Implementation Method 3
system fans and air guides to direct airflow effectively
Data Source
AI summary
A projection device includes a housing, a projection lens, a first light source module, a second light source module, a first heat dissipation module and a second heat dissipation module. The housing includes a front cover, a rear cover, a first side cover, a second side cover, a first air inlet, a second air inlet and an air outlet. The front cover, the rear cover, the first side cover and the second side cover define an accommodation space. A direction of an optical axis of the projection lens divides the accommodation space into a first area and a second area. The second air inlet is located at the first area, and the air outlet is located at the second area. The first heat dissipation module is connected to the first light source module, and the second heat dissipation module is connected to the second light source module.