Outdoor Display Airflow Path for Thermal Stability
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Solution Overview
Problem
Outdoor display apparatuses face temperature instability due to self-generated heat and direct sunlight, leading to malfunctions and reduced lifespan, with existing solutions increasing production costs and size through the use of air conditioners.
Innovation Solution
The apparatus employs an improved air flow path with lower rear inflows and upper rear outflows to evenly circulate air through main heat-generating parts, reducing temperature calibration time and fan operation time while maintaining stable internal temperatures without the need for an expensive air conditioner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an air conditioner including a compressor is installed to cool the heat generated inside, then the temperature control effectiveness is improved, but the production cost increases and the overall size increases
Solution Approach 1:
The invention extracts and removes the air conditioner component from the display apparatus, replacing it with a simplified air circulation system using only fans and air inlets/outlets. This eliminates the compressor and refrigerant system while maintaining temperature control functionality through natural convection and forced air circulation.
Solution Approach 2:
The invention enables the display apparatus to cool itself by utilizing the heat-generating components (display panel, backlight, processor) as heat sources that naturally create convection currents. The air circulation system leverages these self-generated thermal fields to distribute and dissipate heat without requiring active refrigeration systems.
2Loss of time
If air circulation is enhanced to improve temperature distribution, then the temperature calibration time is reduced, but the fan operation time increases
Solution Approach 1:
The invention positions air inlets at the lower rear and air outlets at the upper rear of the housing, creating localized airflow paths that directly target the main heat-generating parts (display panel, backlight unit, processor). This strategic placement ensures efficient heat removal from critical areas without requiring prolonged fan operation.
Solution Approach 2:
The invention creates a balanced air circulation system where air flows through the housing in a controlled manner, equalizing temperature distribution across all internal components. The lower inlet and upper outlet configuration establishes a natural convection current that maintains uniform temperature throughout the apparatus, reducing calibration time while minimizing fan runtime.
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 solution enhances temperature stability, prevents malfunctions, and extends the lifespan of the display apparatus by uniformly distributing air flows through the apparatus, reducing the temperature difference between the external and internal environments, and maintaining a constant internal temperature, thus lowering production costs and providing a more compact design.
Implementation Method 1
a fan 210 for inducing air flow is provided in the rear bracket 20
Implementation Method 2
the air circulates the main heat-generating parts inside the apparatus uniformly
Implementation Method 3
heat generated inside the apparatus and direct sunlight raise the temperature inside the apparatus
Data Source
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AI summary
An outdoor display apparatus having enhanced temperature stability comprises: a display panel having a driver board; a rear bracket coupled to the display panel having the driver board; and a housing for accommodating a rear bracket coupled to the display panel, being coupled to a transparent optical member disposed on a front surface of the display panel and having at least one inlet through which external air is introduced and at least one outlet through which internal air is discharged, wherein: the inlet is formed at a lower portion of a rear surface of the housing, the outlet is formed at an upper portion of a rear surface of the housing, and air flows through a first clearance space existing between the rear bracket and the housing, a second clearance space existing between the rear bracket and the rear surface of the display panel and a third clearance space existing between the front surface of the display panel and the transparent optical member.