Electronic Display Thermal Management via Dual Airflow Pathways
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Solution Overview
Problem
Existing cooling systems for electronic displays, particularly larger screens, are inadequate in managing heat dissipation due to increased heat production and radiative heat transfer from the sun, leading to temperature fluctuations that can harm electronic components.
Innovation Solution
An isolated gas cooling system that includes a closed-loop gas cooling chamber with a transparent anterior plate and a cooling plenum, where a fan propels gas to absorb heat from the electronic display surface and dissipate it through external convective or conductive means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If convective heat dissipation systems with fans and fins are used to cool the entire interior of the display, then heat can be removed from electronic components, but the system becomes inadequate when radiative heat transfer from the sun through the display window becomes a major factor, especially in larger screens
Solution Approach 1:
The cooling system is divided into separate functional zones: a first cooling region positioned to receive radiative heat directly from the sun through the display window, and a second cooling region positioned to receive conductive heat from electronic components. This segmentation allows each region to address specific heat transfer mechanisms independently, making the system effective against both radiative and conductive heat sources.
Solution Approach 2:
A heat transfer medium (gas or liquid) is introduced as an intermediary substance that circulates between the first and second cooling regions. The medium absorbs radiative heat in the first region and then transports it to the second region where it dissipates conductive heat from electronic components, effectively coupling the two cooling functions through a thermal intermediary.
2Area of stationary object
If larger screen sizes are implemented to meet market demands, then display capabilities improve, but heat generation and radiative heat transfer increase, making past cooling systems inadequate
Solution Approach 1:
The cooling system is divided into separate functional zones: a first cooling region positioned to receive radiative heat directly from the sun through the display window, and a second cooling region positioned to receive conductive heat from electronic components. This segmentation allows each region to address specific heat transfer mechanisms independently, making the system effective against both radiative and conductive heat sources.
Solution Approach 2:
The cooling approach transitions from a single interior cooling volume to a multi-dimensional cooling architecture with distinct first and second cooling regions positioned at different locations and orientations. The first region faces the sun for radiative heat absorption, while the second region contacts electronic components for conductive heat removal, creating spatial separation of cooling functions.
3Temperature
If cooling systems attempt to remove heat only through non-display sides and rear components, then electronic components can be cooled, but temperature fluctuation adversely affects electronic components and consistent cooling is not achieved
Solution Approach 1:
The cooling system is divided into separate functional zones: a first cooling region positioned to receive radiative heat directly from the sun through the display window, and a second cooling region positioned to receive conductive heat from electronic components. This segmentation allows each region to address specific heat transfer mechanisms independently, making the system effective against both radiative and conductive heat sources.
Solution Approach 2:
The heat transfer medium circulates continuously through both the first and second cooling regions in a closed-loop system. The medium continuously absorbs radiative heat from the sun and continuously dissipates conductive heat from electronic components, providing continuous and consistent cooling action that maintains temperature stability.
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 provides consistent cooling for electronic displays of various sizes, including large screens, by effectively managing heat transfer from the display surface, reducing temperature fluctuations, and ensuring excellent image quality.
Implementation Method 1
a fan propels gas to absorb heat from the electronic display surface and dissipate it through external convective or conductive means
Implementation Method 2
a fan propels gas to absorb heat from the electronic display surface and dissipate it through external convective or conductive means
Data Source
AI summary
Electronic display assemblies are disclosed which include a housing, an electronic display located within the housing, a first airflow pathway extending through the housing between an intake and an exhaust and a second airflow pathway, separated from the first airflow pathway, and forming a closed, continuous pathway within the housing. A panel is spaced apart from the electronic display and at least partially defining and separating the first and second airflow pathways, where at least a portion of the first airflow pathway extends between a rear surface of the electronic display and a forward surface of the panel, and where at least a portion of the second airflow pathway extends between a rear surface of the panel and a forward surface of a rear portion of the housing. Electronic component(s) for operating the electronic display assembly are located within the second airflow pathway.