Shared Isolated Gas Cooling for Oppositely Facing Electronic Displays
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Solution Overview
Problem
Conductive and convective heat transfer systems for electronic displays are inadequate for larger screens and outdoor applications, as they primarily focus on cooling the rear interior and fail to efficiently manage radiative heat from the sun, leading to inadequate thermal management and increased spatial requirements for larger displays.
Innovation Solution
A shared cooling system for multiple electronic displays that uses an isolated gas cooling chamber with transparent exterior plates and a central cooling plenum, where a fan propels gas to absorb heat from the display surfaces, and external convective means are employed to dissipate heat efficiently, allowing for minimal space usage and optimal cooling performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If convective heat dissipation systems are used to cool the rear interior of the display, then cooling capability is improved, but the system becomes inadequate for outdoor applications and larger screens where radiative heat transfer from the sun becomes a major factor
Solution Approach 1:
The cooling system is segmented into multiple functional zones: a first region for cooling the rear interior of the display and a second region for managing radiative heat from the sun. This segmentation allows each region to address specific heat transfer mechanisms independently, making the system adaptable to both indoor and outdoor applications.
Solution Approach 2:
A transparent plate is introduced as an intermediary element between the display and the external environment. This plate allows radiative heat from the sun to pass through while enabling selective cooling of the display surface, thus mediating between the need for cooling and the need to maintain optical clarity.
2Area of moving object
If display screen size is increased to meet market demand, then display capability is improved, but heat generation and heat transmission into the display increase
Solution Approach 1:
The cooling system is divided into distinct regions: a first region that cools the rear interior and a second region that specifically addresses radiative heat from the sun. This segmentation enables the system to handle the increased heat load from larger displays by targeting different heat sources with dedicated cooling zones.
Solution Approach 2:
The cooling approach transitions from a single-dimensional rear interior cooling to a multi-dimensional system that includes front-surface cooling. By adding the dimension of front-surface heat management, the system can effectively cool larger displays that generate more heat.
3Temperature
If fans and fins are used to move air past electronic components, then heat transfer is improved, but the system occupies more space and becomes complex
Solution Approach 1:
The complex fan and fin assembly is extracted and replaced with a simpler transparent plate-based cooling system. The transparent plate performs multiple functions (structural support, optical clarity, and heat management) that previously required separate components, thereby reducing overall system complexity.
Solution Approach 2:
The transparent plate serves multiple functions simultaneously: it acts as a structural support element, maintains optical clarity for the display, and facilitates heat transfer from the front surface of the display. This multi-functionality reduces the need for separate dedicated cooling components.
4Device complexity
If natural convection is used to transfer heat from electronic components, then system simplicity is maintained, but cooling capability is insufficient for outdoor applications and larger screens
Solution Approach 1:
The cooling system is segmented into active cooling regions (with fans) and passive cooling regions (relying on natural convection). This allows the system to maintain simplicity in certain areas while providing enhanced cooling capability where needed, particularly for managing radiative heat from the sun in outdoor applications.
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 shared cooling system effectively manages heat for larger displays in various environments, maintaining optimal cooling performance even in direct sunlight and reducing spatial requirements by utilizing a common cooling system for multiple displays, ensuring consistent cooling and efficient heat dissipation.
Implementation Method 1
a fan propels gas to absorb heat from the display surfaces
Implementation Method 2
gas to absorb heat from the display surfaces
Implementation Method 3
radiative heat transfer from the sun through a display window becomes a major factor
Implementation Method 4
external convective means are employed to dissipate heat efficiently
Data Source
AI summary
A system and method for cooling back to back electronic displays. Transparent first and second gas chambers are co-existive with the front display surfaces of the first and second electronic displays. A closed loop of isolated gas enters the first and second gas chambers and contacts the front surfaces of the electronic displays, where it may extract heat from the front display surfaces. The isolated gas is then directed into a cooling chamber where it is cooled and re-introduced into the first and second gas chambers. Fans may be used to propel the isolated gas through the cooling chamber and the first and second gas chambers. The circulating gas removes heat directly from the electronic display surfaces. The isolated gas is transparent or at least semi-transparent to ensure that the image quality of the electronic displays is minimally impacted.