Constricted Convection Cooling for Large Electronic Displays
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Solution Overview
Problem
Conductive and convective heat transfer systems for electronic displays are inadequate for larger screens, particularly in hot climates, as they fail to effectively manage radiative heat transfer from the sun and temperature fluctuations, leading to reduced lifespan of electronic components.
Innovation Solution
A constricted convection cooling system that directs heat transfer from the anterior of the display using an external housing with a constricted convection plate and fans to create a uniform airflow through a cooling channel, which can utilize refrigerated air or ambient air, effectively managing heat dissipation for screens larger than 12 inches, including 70-inch screens in extreme environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional convective heat transfer systems with fans and fins are used, then heat can be removed from electronic components through sidewalls, but the system is inadequate for larger screens and hot climates where radiative heat transfer from the sun becomes a major factor
Solution Approach 1:
The cooling system is divided into separate functional zones: a front cooling channel for direct anterior heat removal, rear cooling channels for backend component cooling, and side cooling channels. This segmentation allows targeted cooling of different heat-generating areas, making the system adequate for large screens in hot climates where uniform cooling is insufficient
Solution Approach 2:
The patent introduces a new cooling dimension by directing airflow through the anterior (front) surface of the display, in addition to traditional sidewall and rear cooling. This multi-dimensional approach addresses radiative heat transfer from the sun by providing direct cooling at the heat entry point, making the system adequate for hot climate conditions
2Area of stationary object
If the display screen size is increased to meet market demand, then larger screens are provided, but more heat is generated and more heat is transmitted into the displays through the display window
Solution Approach 1:
Multiple independent cooling channels are implemented: front cooling channels, rear cooling channels, and side cooling channels. Each channel handles specific heat loads, allowing the system to manage the increased heat generation from larger screens without compromising temperature control
Solution Approach 2:
Cooling airflow is directed through the anterior surface before heat can penetrate deep into the display components. This preliminary cooling action at the heat entry point prevents excessive heat accumulation, enabling larger screen sizes while maintaining acceptable operating temperatures
3Temperature
If conventional cooling systems cool the entire interior of the display, then general cooling is provided, but this is not adequate when radiative heat transfer from the sun through a display window becomes a major factor
Solution Approach 1:
The cooling system provides localized cooling at the anterior surface where radiative heat transfer enters the display. By concentrating cooling capacity at this specific location rather than distributing it uniformly throughout the interior, the system effectively counters solar heat radiation while maintaining overall temperature control
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
The system provides consistent cooling, reducing temperature fluctuations and extending the lifespan of electronic components by enhancing heat dissipation capabilities, making it suitable for larger screens and outdoor applications.
Implementation Method 1
a constricted convection cooling channel (50) adapted to receive cooling air and adapted to expel heated air from the constricted convection cooling channel
Implementation Method 2
convection cooling channel (50) adapted to receive cooling air and adapted to expel heated air
Data Source
AI summary
A system for cooling an electronic display is provided. The electronic display has a posterior surface and is located in a housing. A constricted convection plate is located behind, and covers a majority of, the posterior surface. A channel is formed between the constricted convection plate and the posterior surface. A fan draws ambient air through the channel.