Display Device Partitioned Internal Space Heat Dissipation
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Solution Overview
Problem
The indirect cooling method in display devices, which is effective for outdoor use due to its resistance to dust and foreign substances, faces inefficiencies in heat radiation as external air is not directly exchanged with heat generation regions, leading to inadequate heat dissipation, especially from the display module's front panel and rear backlight unit.
Innovation Solution
The display device incorporates a partitioned internal space with separate closed regions for the front and rear surfaces of the display module, allowing direct heat exchange with external air through strategically positioned open holes that form passages for air circulation, enhancing heat radiation efficiency and minimizing air mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the indirect cooling method is used to protect against dust and foreign substances, then reliability is improved, but heat radiation efficiency deteriorates
Solution Approach 1:
The internal space is partitioned into multiple separate closed regions (first closed region for front surface, second closed region for rear surface) that are isolated from each other. Each region has its own independent air circulation path with open holes positioned to allow direct heat exchange with external air, preventing air mixing while maintaining dust protection.
Solution Approach 2:
The partition wall acts as an intermediary structure that separates the front and rear surfaces while the open holes serve as intermediary channels that allow heat exchange with external air without direct contact between internal and external environments, thus protecting against dust while enabling efficient cooling.
2Device complexity
If a single circulation structure is provided, then device complexity is reduced, but heat radiation efficiency deteriorates due to insufficient heat exchange
Solution Approach 1:
The single circulation structure is segmented into multiple independent circulation paths, with each closed region having its own air circulation system. This segmentation allows each region to optimize heat exchange independently, improving overall heat radiation efficiency without requiring a single complex unified structure.
Solution Approach 2:
The air circulation is extended from a single-dimensional path to multi-dimensional paths by positioning open holes at different locations and orientations on the housing. This creates three-dimensional air flow patterns that enhance heat exchange efficiency across different surfaces and regions.
3Loss of energy
If open holes are positioned to maximize heat exchange, then heat radiation efficiency is improved, but air mixing between regions increases
Solution Approach 1:
The partition wall with strategically positioned open holes segments the air circulation paths, allowing each closed region to have its own independent air exchange with the external environment. This prevents air mixing between regions while maintaining efficient heat radiation through direct exposure of heat-generating surfaces to circulating air.
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 significantly improves heat radiation efficiency by allowing direct heat exchange with external air for both the front and rear surfaces, reducing the risk of air mixing and optimizing natural and forced convection, thereby effectively dissipating heat generated in the display module.
Implementation Method 1
optimizing natural and forced convection
Implementation Method 2
allowing direct heat exchange with external air through strategically positioned open holes that form passages for air circulation
Implementation Method 3
a heat pipe comprising one end positioned in the inner space of the housing to be coupled to a back surface of the display and the other end positioned in the cooling unit, with a liquid flowing therein to move heat
Data Source
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AI summary
There is disclosed a display device comprising a display module, an outer case in which the display module is mounted and defining an internal space which is closed airtight from the outside, and an inner case coupled to the display module, wherein the inner case which partitions off the internal space into a first closed space having a rear surface of the display module exposed thereto and a second closed space having a front surface of the display module exposed thereto, and the first closed space is surrounded by the second closed space with respect to one cross section.