Electronic Display Cooling With Separate ECA Housing
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Solution Overview
Problem
Existing cooling systems for large-scale electronic displays are inefficient, bulky, and complex, leading to spatial constraints, increased costs, and potential quality issues due to complex ducting and fan arrangements, which are exacerbated by higher heat demands and hotter climates.
Innovation Solution
The system features a separate Electronics Control Assembly (ECA) housing with its own cooling system, a counterflow heat exchanger with parallel tubes, and a dual-enclosure design that separates internal and external air flows, minimizing temperature differences and optimizing cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple heat exchangers or cooling chambers are used to optimise differential air temperature, then cooling efficiency is improved, but device complexity and spatial requirements increase
Solution Approach 1:
The display is divided into multiple temperature zones with different heat exchangers positioned at specific locations (top, bottom, sides) to create localized cooling regions. This segmentation allows each heat exchanger to serve a specific area, optimizing the differential air temperature across different zones without requiring a single complex centralized system.
Solution Approach 2:
Heat exchangers are integrated within the display structure itself, with cooling chambers nested between display panels and structural elements. The cooling system is embedded within the display housing, allowing multiple cooling components to occupy overlapping spatial volumes and reducing the overall footprint of the cooling infrastructure.
2Reliability
If multiple fans, cooling chambers and ducting are used to reach heat generating areas, then cooling coverage is improved, but volume and weight increase
Solution Approach 1:
Multiple cooling functions are merged into integrated heat exchanger assemblies that combine heating and cooling capabilities in single units. The ducting and fan arrangements are consolidated into unified airflow paths that serve multiple heat-generating areas simultaneously, reducing the total number of discrete components and their associated weights.
Solution Approach 2:
The cooling system utilizes vertical airflow paths and three-dimensional heat exchanger configurations within the display depth, rather than only horizontal expansion. By exploiting the vertical dimension and internal volume of the display structure, adequate cooling coverage is achieved without proportionally increasing the display's external dimensions and weight.
3Reliability
If dedicated heat exchangers and crossflow arrangements are used, then cooling performance is improved, but depth and weight increase
Solution Approach 1:
Different heat exchanger types and configurations are applied to different locations within the display based on local thermal requirements. High-heat areas receive more aggressive cooling arrangements, while lower-heat areas use simpler exchangers, optimizing performance without uniformly increasing depth across the entire display structure.
Solution Approach 2:
The system incorporates variable speed fans and controllable heat exchanger configurations that can dynamically adjust airflow rates and thermal exchange efficiency. This dynamic capability allows the cooling system to achieve high performance when needed while operating more compactly during lower thermal loads, effectively reducing the required depth.
4Reliability
If complex ducting and fan arrangements are used for air flow control, then cooling efficiency is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The heat exchanger assemblies are designed as universal modules that can be installed in multiple locations and orientations within the display. These multi-functional units serve both heating and cooling purposes, and can be configured to work with different fan arrangements, reducing the need for location-specific custom components and simplifying manufacturing and assembly procedures.
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 results in a thinner, more efficient cooling system that reduces manufacturing complexity and costs, minimizes hot spots, and ensures effective cooling of both display panels and ECA components, while allowing for flexible temperature control.
Implementation Method 1
a heat exchanger within the housing, adjacent to the display panel
Implementation Method 2
a counterflow heat exchanger with parallel tubes
Implementation Method 3
at least one fan is arranged to pass external air around or through the plurality of tubes to cool them
Implementation Method 4
heat exchangers often have limited size, occupying only a partial display screen area
Data Source
AI summary
An electronic display includes a main housing, a display panel having a display surface that is visible through the main housing, and an electronics control assembly (ECA) that controls and manages the electronic display. The ECA has its own ECA housing that is separate from the main housing. The ECA housing is provided with its own ECA cooling system that is separate from the main housing. Electrical connections are provided between the main housing and ECA housing.