Electronic Display Access Panel Ambient Air Cooling Channel
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Solution Overview
Problem
Electronic displays in DOOH applications face challenges with heat removal due to environmental conditions and solar loading, while also requiring accessible designs for maintenance and service.
Innovation Solution
An electronic display assembly with a channel for ambient air in an access panel, which includes a frame, a digital side assembly, and an access panel with open loop channels for ambient air, forming a closed loop with a heat exchanger and circulating gas to facilitate heat removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the assembly is placed in a ruggedized enclosure to protect from environmental conditions, then reliability is improved, but heat removal becomes more difficult
Solution Approach 1:
The cooling system is segmented into multiple independent channels: a first cooling channel with a first fan for general cooling, and a second cooling channel with a second fan specifically for the access panel. This segmentation allows targeted cooling of different components without requiring the entire enclosure to be opened for maintenance.
Solution Approach 2:
The access panel is introduced as an intermediary element that provides access to internal components while maintaining the protective enclosure. It includes a second cooling channel that allows air circulation for cooling electronic components without compromising the sealed enclosure's protective function.
2Adaptability or versatility
If the rear surface receives high solar loading to enable outdoor placement, then adaptability is improved, but heat accumulation increases
Solution Approach 1:
The cooling system applies local quality by providing different cooling capacities to different areas. The first cooling channel with its dedicated fan provides enhanced cooling to the access panel area that receives high solar loading, while other areas receive cooling according to their specific thermal requirements.
Solution Approach 2:
The cooling channels and fans are pre-configured within the enclosure to proactively manage heat before it accumulates to problematic levels. The system is designed to actively circulate air through specific channels to prevent heat buildup from solar loading before it affects component performance.
3Reliability
If the access panel is sealed for protection, then reliability is improved, but ease of repair deteriorates
Solution Approach 1:
The access panel is extracted as a separate, removable component from the main enclosure. This allows the panel to be opened and removed for accessing electronic components without compromising the sealed protection of the main enclosure. The panel can be easily detached and reattached while maintaining the protective seal of the overall assembly.
Solution Approach 2:
The access panel is designed with dynamic characteristics, being removable and reconfigurable. This allows the system to transition between a sealed protective state during operation and an open accessible state during maintenance, providing both reliability during operation and ease of repair during maintenance cycles.
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 assembly effectively manages heat through the circulation of ambient air and gas, enhancing the durability and maintainability of electronic displays in harsh environments.
Implementation Method 1
A heat exchanger may be located in the cooling channel which may form part of an open loop and the cooling loop
Implementation Method 2
The various ambient air flows may be separately exhausted from the assembly or may be merged before being exhausted. In other exemplary embodiments the access panel may be cooled by natural convection
Implementation Method 3
The ambient air may be ingested by way of intakes located on the access panel. The ingested ambient air may be initially or subsequently separated into a number of flows
Data Source
AI summary
An electronic display assembly includes a side assembly having a cover panel forming, at least in part, a front portion of said side assembly, and an electronic display located interior to said cover panel. An access panel is located rearward of the electronic display and includes an intake and a spaced apart exhaust. An airflow pathway for ambient air extends between the intake and the exhaust. The airflow pathway separates into at least a first and second sub-pathway at a first location fluidly adjacent to the intake. The first sub-pathway extends along a rear surface of the electronic display. The second sub-pathway extends along an interior surface of the access panel. At least the first and second sub-pathways rejoin at a second location fluidly adjacent to the exhaust.