Closed Display Metal Cover Heat Dissipation
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Solution Overview
Problem
Conventional display apparatuses fail to maintain effective heat dissipation in closed environments, such as those required for medical or scuba diving applications, leading to temperature buildup and potential device failure, especially when ventilation holes are blocked for waterproof and dustproof requirements.
Innovation Solution
A closed type display apparatus design featuring a metal cover and cooling fin configuration that transfers heat from high thermal power consumption circuit boards to the metal cover for efficient dissipation, combined with a resilient thermal conductive element and thermoelectric generator for enhanced heat management and energy harvesting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ventilation holes are blocked to meet waterproof and dustproof requirements, then waterproof level is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The patent divides the housing into two separate chambers: a first chamber containing high thermal power consumption devices with dedicated heat dissipation pathways, and a second chamber containing low thermal power consumption devices. This segmentation allows independent heat management for each chamber, enabling the high-power chamber to maintain effective heat dissipation while the overall device achieves waterproof sealing by blocking ventilation holes.
Solution Approach 2:
The patent introduces a heat dissipation channel that extends from the first chamber through the housing to the external environment. This intermediary pathway allows heat to escape from the sealed first chamber without requiring ventilation holes on the external housing surface, thus maintaining both waterproof sealing and heat dissipation capability.
2Reliability
If a closed structure is used to achieve waterproof and dustproof standards, then sealing performance is improved, but heat dissipation efficiency deteriorates
Solution Approach 1:
The patent extends the heat dissipation channel in a directional manner from the first chamber through the housing wall to the external environment. This dimensional extension creates a three-dimensional heat dissipation pathway that bypasses the need for surface ventilation holes, allowing the housing to maintain full sealing while heat efficiently escapes through the extended channel.
3Reliability
If high thermal power consumption devices are placed in a sealed environment, then waterproof protection is improved, but temperature control deteriorates
Solution Approach 1:
The patent segments the internal housing space into distinct chambers based on thermal characteristics. The first chamber housing high thermal power consumption devices is separated from the second chamber containing low power devices. This segmentation enables targeted heat management strategies for each chamber, allowing the high-power chamber to maintain effective temperature control through dedicated heat dissipation channels while remaining fully sealed.
Solution Approach 2:
The extended heat dissipation channel acts as an intermediary between the sealed first chamber and the external environment. It provides a controlled pathway for heat transfer without compromising the sealing integrity of the chamber, allowing high thermal power consumption devices to operate in a waterproof environment while maintaining effective temperature control.
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 ensures stable operation in high-temperature environments by effectively dissipating heat without ventilation holes, meeting waterproof and dustproof standards while extending the lifespan of the display apparatus.
Implementation Method 1
a cooling fin disposed between the higher heating device and the metal cover and configured to transfer heat from the higher heating device to the metal cover
Implementation Method 2
a resilient thermal conductive element is disposed on at least one side of the cooling fin, and is configured to strengthen the thermal contact formed among the higher heating device, the cooling fin and the metal cover
Implementation Method 3
a thermoelectric generator is disposed on an outer side surface of the metal cover
Data Source
AI summary
The present disclosure relates to a closed type display apparatus. In an embodiment, the closed type display apparatus includes a front housing, a rear housing, and a closed space which is defined by the front housing and the rear housing and in which first and second circuit boards used in the display apparatus are disposed; wherein, a metal cover is formed as at least a portion of the rear housing, and a higher heating device of the first circuit board is disposed to be adjacent to the metal cover. The present disclosure also relates to a method of assembling a closed type display apparatus.