Low-Profile Display Enclosure Thermal Management
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Solution Overview
Problem
Flat-panel display devices are vulnerable to environmental contaminants and thermal extremes when exposed to outdoor or inhospitable environments, requiring protection from liquids and temperature fluctuations.
Innovation Solution
A low-profile, weatherproof enclosure system with a rigid bezel, transparent front cover, and rear cover assembly that includes a heat sink and thermal control unit to maintain optimal temperature and prevent liquid ingress, featuring a heat pipe assembly and thermal control devices for active and passive temperature modulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealed weatherproof enclosure is used to protect the display device from liquid ingress and environmental contaminants, then the protection level improves, but the thermal management becomes more difficult and temperature control becomes challenging
Solution Approach 1:
The enclosure is divided into separate functional zones: a sealed protective enclosure for liquid protection, and integrated thermal management components (heat sink, heat pipe, thermal control device) that are spatially separated but thermally connected. This segmentation allows the enclosure to maintain its sealed protective function while accommodating thermal management systems independently.
Solution Approach 2:
A heat pipe assembly acts as an intermediary thermal conductor between the display device and the heat sink portion of the rear cover assembly. This intermediary component efficiently transfers heat from the display device through the sealed enclosure walls to the external environment, resolving the thermal management challenge without compromising the sealed protective function.
2Shape
If a low-profile enclosure is used to minimize visual impact, then the aesthetic appearance improves, but the thermal dissipation capability deteriorates
Solution Approach 1:
The rear cover assembly incorporates a heat sink portion with locally optimized thermal features (fins or extended surfaces) concentrated in the rear profile area. This local quality enhancement provides effective thermal dissipation capability within the constrained low-profile geometry, allowing the enclosure to maintain both aesthetic appearance and thermal performance.
Solution Approach 2:
Thermal management is shifted from the front profile view to the rear dimension. The heat sink portion is positioned in the rear cover assembly, utilizing the depth dimension rather than increasing the front profile thickness. This dimensional repositioning maintains the low-profile aesthetic while providing adequate thermal dissipation surface area in the rear direction.
3Temperature
If thermal control devices are added to maintain operating temperature, then the temperature control improves, but the device complexity increases
Solution Approach 1:
The thermal control device is integrated with the power supply unit within the same housing space. This merging of functions reduces overall device complexity by consolidating components rather than adding separate dedicated thermal control housings. The thermal control device shares structural and spatial resources with the power supply, maintaining temperature control capability while minimizing system complexity.
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 enclosure system effectively protects flat-panel displays from environmental hazards, maintaining operational temperatures and preventing liquid ingress, while minimizing the visual impact of the enclosure and ensuring reliable performance in challenging conditions.
Implementation Method 1
A heat pipe assembly includes a first attachment portion coupled to the display device and a second attachment portion coupled to the rear cover assembly
Implementation Method 2
At least a portion of the rear cover assembly comprises a heat sink portion
Data Source
AI summary
A low profile display enclosure system for enclosing a display device for viewing that protects the display device from environmental effects and is configured to dissipate heat generated within the display enclosure. The substantially sealed display enclosure comprises a rigid bezel, a substantially transparent front cover coupled to the bezel, and a rear cover assembly that includes a heat sink portion. The thickness of the bezel is minimized to provide the enclosure with a low profile about the periphery of the display device enclosed therein. Thermal control devices may be mounted within the enclosure to modulate a temperature within the enclosure.