Display Device Dual Air Circulation Heat Dissipation
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Solution Overview
Problem
Display devices exposed to outdoor environments face inefficiencies in heat dissipation due to the presence of foreign matter and temperature differences, particularly when using single air circulation structures that fail to achieve sufficient heat exchange between internal heat-generating regions and external air.
Innovation Solution
A display device incorporating a dual air circulation system, comprising a closed-loop air circulation system and an open-loop air circulation system, with heat exchangers strategically positioned to enhance heat transfer and minimize thickness, while maintaining visibility and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If indirect-cooling type heat dissipation is used to avoid foreign matter ingress, then reliability is improved, but heat dissipation efficiency deteriorates
Solution Approach 1:
The air circulation system is divided into two separate loops: a closed-loop system that circulates air internally without contacting external foreign matter, and an open-loop system that introduces external air through filters for heat exchange. This segmentation allows the device to maintain reliability by protecting internal components from foreign matter while improving heat dissipation efficiency through dedicated external air intake paths
Solution Approach 2:
Filters are introduced as intermediary components in the open-loop air circulation system. These filters serve as mediators between the external environment and the heat exchange process, allowing air to pass through for heat dissipation while blocking foreign matter. This enables the system to achieve both protection from foreign matter and efficient heat dissipation simultaneously
2Device complexity
If a single air circulation structure is used, then device complexity is reduced, but heat dissipation efficiency deteriorates
Solution Approach 1:
The air circulation system is divided into two separate loops: a closed-loop system that circulates air internally without contacting external foreign matter, and an open-loop system that introduces external air through filters for heat exchange. This segmentation allows the device to maintain reliability by protecting internal components from foreign matter while improving heat dissipation efficiency through dedicated external air intake paths
Solution Approach 2:
The patent introduces air circulation in multiple spatial dimensions by creating separate circulation paths at different locations within the housing. The closed-loop system operates in one dimensional path while the open-loop system provides additional circulation paths, enabling heat exchange to occur across multiple spatial dimensions and improving overall heat dissipation efficiency
3Length of stationary object
If heat exchangers are strategically positioned to minimize thickness, then compactness is improved, but manufacturing precision requirements increase
Solution Approach 1:
The heat exchangers are nested within the existing housing structure and air circulation channels. By integrating the heat exchangers into the nested air circulation system with defined channels and paths, the design achieves compact thickness while the structured nesting provides natural positioning references that reduce manufacturing precision requirements compared to standalone heat exchanger mounting
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 dual air circulation system improves heat dissipation efficiency, minimizes the thickness of the display device, and reduces manufacturing costs by effectively transferring heat from internal sources to external environments through a combination of closed and open-loop air circulation systems.
Implementation Method 1
a heat exchanger for transferring heat from the closed-loop air circulation system to the open-loop air circulation system
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3
AI summary
A display device is disclosed. In order to achieve air circulation through an inner structure or an outer structure of the display device for efficient heat dissipation, the display device includes a housing, a display module mounted in the housing, a closed-loop air circulation system, and an open-loop air circulation system, wherein the closed-loop air circulation system includes a first channel defined between a front surface of the display module and a front surface of the housing so as to extend along the front surface of the display module, and a second channel defined between one side surface of the display module and one side surface of the housing that is opposite the one side surface of the display module so as to extend along the one side surface of the display module in a longitudinal direction thereof, the first channel being configured to receive air from a first end of the second channel and to discharge the air to a second end of the second channel, and wherein the open-loop air circulation system includes a third channel isolated from the first channel and the second channel, an inlet port for receiving air from the outside through the third channel, and an outlet port for discharging the air to the outside through the third channel.