Display Device Air Tunnel Segmentation for Heat Dissipation
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Solution Overview
Problem
High-brightness liquid crystal displays for outdoor applications face heat dissipation inefficiencies due to blocked airflow from uneven components, which can lead to overheating and contamination from dust and water vapor, affecting the lifespan and stability of the power and core plates.
Innovation Solution
A display device with an independent air tunnel for heat dissipation, featuring a blower fan, ejector fan, and partition plates to isolate the power and core plates, along with a surface roughness greater than Ra0.04 on the air tunnel's inner wall for enhanced heat dissipation, preventing external contaminants from entering the sealed chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an independent air tunnel design is adopted to enhance heat dissipation, then heat dissipation efficiency is improved, but dust and water vapor from outside air enter the air tunnel and affect the lifespan of power plate and core plate
Solution Approach 1:
The air tunnel is segmented into a first air tunnel for heat dissipation and a second air tunnel for dust and water vapor isolation. The first air tunnel is dedicated to heat dissipation airflow, while the second air tunnel is specifically designed to prevent contaminants from reaching the power plate and core plate, thus resolving the contradiction between heat dissipation efficiency and component reliability.
Solution Approach 2:
A filtering system is introduced as an intermediary component in the second air tunnel to remove dust and water vapor from the airflow before it reaches the power plate and core plate. This mediator protects the sensitive components while allowing the heat dissipation function to continue through the first air tunnel.
2Temperature
If power plate and core plate are installed in the air tunnel for heat dissipation, then heat dissipation is enhanced, but airflow is blocked by unevenness of components affecting heat dissipation efficiency
Solution Approach 1:
The air tunnel is divided into two separate channels: the first air tunnel for heat dissipation and the second air tunnel for component placement. This segmentation allows the power plate and core plate to be installed in the second air tunnel without blocking the airflow in the first air tunnel, thus maintaining high heat dissipation efficiency while still providing thermal management for the components.
Solution Approach 2:
The power plate and core plate are extracted from the first air tunnel and placed in the second air tunnel. This extraction removes the obstruction that was blocking airflow in the heat dissipation channel, allowing air to flow freely through the first air tunnel for efficient heat dissipation, while the components are still thermally managed through the second air tunnel.
3Temperature
If functional device is installed inside the air tunnel, then heat dissipation is improved, but airflow resistance increases and heat dissipation efficiency decreases
Solution Approach 1:
The air tunnel is segmented into two independent channels, allowing functional devices to be installed in the second air tunnel without obstructing the first air tunnel's airflow. This segmentation enables heat dissipation functionality while minimizing airflow resistance in the primary heat dissipation path.
Solution Approach 2:
Partition plates are introduced as intermediary structures to separate the functional devices from the main airflow path in the first air tunnel. These partition plates allow thermal management while maintaining smooth airflow with minimal resistance, thus preserving heat dissipation efficiency.
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 improves heat dissipation efficiency, reduces airflow resistance, and extends the service life of the power and core plates by isolating them from outdoor dust and water vapor, ensuring operational stability and reliability.
Implementation Method 1
a heat dissipation layer disposed on an inner wall of the air tunnel
Implementation Method 2
a blower fan disposed on a terminal of the air tunnel close to the air inlet
Implementation Method 3
an ejector fan disposed on a terminal of the air tunnel close to the air outlet
Data Source
AI summary
The present disclosure provides a display device, including a housing, an air tunnel, and a functional device. The housing includes an air inlet and an air outlet, wherein the air inlet and the air outlet are disposed on two sides of the housing opposite to each other. The air tunnel is disposed in the housing and extends from the air inlet to the air outlet; and the functional device is disposed in the housing and located outside the air tunnel.