Projector Hermetic Housing Air Guide Wall Heat Dissipation
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Solution Overview
Problem
Existing projectors face issues with heat radiation performance due to trapped heat in hermetic housings, which can lead to image degradation and dust ingress when air circulation channels are not optimally designed.
Innovation Solution
The projector incorporates a hermetic housing with a heat absorption part, an air guide wall, and sirocco fans to create an air guide passage along the bottom surface, allowing for efficient heat release and dust-proofing by controlling air circulation and heat absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light modulation device is housed in a hermetic housing, then dust-proofing is improved, but heat radiation performance deteriorates due to trapped heat
Solution Approach 1:
The hermetic housing is segmented into multiple functional regions: a main housing space containing the light modulation device, and a separately formed air guide passage. This segmentation allows the housing to simultaneously maintain hermetic sealing for dust-proofing while providing dedicated pathways for heat dissipation airflow, resolving the contradiction between sealed protection and thermal management
Solution Approach 2:
The air guide passage acts as an intermediary structure that mediates between the hermetic sealed environment and the external atmosphere. It provides a controlled interface for air circulation, allowing heat to be extracted from the housing while maintaining the hermetic seal, thus enabling both dust-proofing and effective heat radiation
2Temperature
If air circulation is implemented using a circulation fan, then heat radiation is improved, but device complexity increases due to additional components
Solution Approach 1:
The air guide passage incorporates a movable panel that can change its position or orientation to dynamically adjust the airflow path. This dynamic element enables flexible control of air circulation patterns to optimize heat radiation while using a simpler fan structure, reducing overall device complexity compared to complex multi-component cooling systems
Solution Approach 2:
The air guide passage structure allows for changing airflow parameters such as flow direction, flow rate distribution, and circulation patterns by adjusting the panel position. This enables effective heat radiation through parameter optimization rather than requiring additional complex cooling components, thereby reducing device complexity while maintaining thermal performance
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 enhances heat radiation performance and maintains dust-proofing by effectively circulating air and releasing heat from the bottom surface, improving the projector's overall cooling efficiency and minimizing dust ingress.
Implementation Method 1
The heat absorption part is located at the upper section of the hermetic housing and is configured to absorb heat from the hermetic housing and to radiate the heat to the outside of the hermetic housing
Implementation Method 2
The heat absorption part is located at the upper section of the hermetic housing and is configured to absorb heat from the hermetic housing and to radiate the heat to the outside of the hermetic housing
Implementation Method 3
The first sirocco fan is located at the inlet and is configured to introduce the air in the main space into the air guide passage, to guide the air in the air guide passage to the communication part, and to blow the air from the communication part to the heat absorption part
Data Source
AI summary
A projector includes a light modulation device; a projection lens; a hermetic housing; a projector housing containing the hermetic housing; a heat exchanger; an air guide wall being located in the hermetic housing and partitioning the air guide passage from a main space containing the light modulation device, the air guide wall including: a communication part adjoining the heat exchanger and providing communication between the air guide passage and the main space, and an opening functioning as an inlet for guiding air from the main space into the air guide passage after the air has passed through the heat exchanger; and a fan located at the inlet so as to introduce the air in the main space into the air guide passage, to guide the air in the air guide passage to the communication part, and to blow the air from the communication part to the heat exchanger.