Display Assembly Airflow Layout for Cooling and EV Charger Integration
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Solution Overview
Problem
Display assemblies face challenges in thermal management due to heat generation from solar loading and internal component operation, particularly in outdoor applications, and require efficient manufacturing processes.
Innovation Solution
The design incorporates multiple electronic display subassemblies with closed loop fan units that induce turbulent flow in a common rear passageway and laminar flow in front and illumination device passageways, enhancing heat exchange efficiency and integrating electric vehicle chargers within the structural framework for shared thermal management and power supplies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If multiple electronic display subassemblies are positioned at opposing sides of a structural framework with a common rear passageway, then thermal management efficiency is improved through shared cooling infrastructure, but device complexity increases due to the integrated configuration
Solution Approach 1:
The patent combines multiple electronic display subassemblies into a single integrated structure with a common rear passageway and shared cooling infrastructure. This merging approach allows heat from multiple displays to be managed through a unified thermal management system, improving energy efficiency while the modular design keeps complexity manageable.
Solution Approach 2:
The common rear passageway serves multiple functions: it provides structural support, enables shared thermal management for multiple displays, and facilitates airflow distribution. This multi-functionality reduces the need for separate systems for each display, improving thermal management efficiency without proportionally increasing complexity.
2Loss of energy
If closed loop fan units induce turbulent flow in the rear passageway, then heat exchange efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent changes the flow regime parameter from laminar to turbulent flow in the rear passageway to enhance heat exchange efficiency. This parameter change is achieved through the geometry of the passageway and fan unit configuration, which naturally promote turbulence without requiring extremely tight manufacturing tolerances.
Solution Approach 2:
Different flow conditions are created in different regions: turbulent flow is induced in the rear passageway for efficient heat exchange, while laminar flow is maintained in the front passageway for optimal display performance. This local differentiation of flow quality allows each region to operate at its optimal performance point.
3Productivity
If the same subassembly design is used for all displays, then manufacturing efficiency is improved through standardization, but adaptability to different thermal loads decreases
Solution Approach 1:
The patent employs dynamic fan units that can adjust their operation to match varying thermal loads. While the subassembly hardware remains standardized for efficient manufacturing, the fan control systems can be dynamically adjusted to optimize cooling performance for different thermal conditions, maintaining both manufacturing efficiency and adaptability.
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 configuration improves heat exchange efficiency, maintains a flat electronic display layer for better optics, and allows for efficient manufacturing, while enabling the integration of electric vehicle chargers for simultaneous charging and display functionality.
Implementation Method 1
This may induce at least a partial cross-flow of circulating gas within the rear passageway and/or at least a partial counter flow of the circulating gas within the rear passageway when the closed loop fan unit(s) are activated, thereby resulting in relatively turbulent flow within the rear passageway, which may improve heat exchange efficiency.
Implementation Method 2
Each of the subassemblies may be configured to provide a relatively laminar flow through one or both of a front passageway and an illumination device passageway.
Implementation Method 3
Display assemblies often generate heat, such as from solar loading, ingestion of relatively warm ambient air, and/or powering of internal components such as a backlight.
Data Source
AI summary
A display assembly for inducing turbulent flow and integrating an electric vehicle charger. A first and second subassembly are connected to a structural framework, each including a cover, an electronic display layer located behind the cover, a rear panel located behind the electronic display layer, and a fan assembly located at a rear surface of the rear panel. The electric vehicle charger is also connected to the structural framework.