Sealed Dual-Chamber Display Cooling With Dust Isolation
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Solution Overview
Problem
Outdoor display devices face challenges with reduced heat dissipation due to the use of a transparent cover plate, which also allows dust and dirt ingress, degrading display quality.
Innovation Solution
A display device design with a housing, cover plate, main board, display module, and heat exchanger, featuring separate chambers and airflow channels to enhance heat dissipation while preventing dust and moisture ingress, utilizing fans and heat exchangers to manage airflow effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent cover plate is used to protect the display module, then the display device can be identified at night or in shadows, but the heat dissipation capacity of the display module is reduced
Solution Approach 1:
The patent divides the internal space into a sealed first chamber (containing the display module) and a second chamber (for heat dissipation), separated by the display module itself. This segmentation allows the cover plate to protect the display module while the second chamber handles heat dissipation independently, resolving the contradiction between protection/visibility and heat dissipation.
2Temperature
If the distance between the display module and the cover plate is increased to allow airflow for heat dissipation, then heat dissipation improves, but dust and dirt may enter the gap and reduce display quality
Solution Approach 1:
The patent creates a sealed first chamber that completely isolates the gap between the display module and cover plate from the external environment. This segmentation prevents dust and dirt ingress while maintaining the necessary distance for heat dissipation through the sealed chamber design.
Solution Approach 2:
The patent introduces a sealed chamber structure as an intermediary between the external environment and the display module. This sealed chamber acts as a mediator that allows controlled airflow for heat dissipation while preventing direct contact between dust particles and the display module surface.
3Reliability
If the display module is arranged behind the cover plate to avoid direct exposure, then protection from external environment is achieved, but heat dissipation capacity is reduced
Solution Approach 1:
The patent segments the internal structure into a sealed protection chamber (first chamber) and a heat dissipation chamber (second chamber). The display module is positioned in the sealed first chamber for protection, while the second chamber is dedicated to heat dissipation, allowing both protection and heat dissipation to function independently without compromising either.
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 design achieves effective heat dissipation from both sides of the display module and main board, maintaining display quality by preventing contamination and enhancing thermal management.
Implementation Method 1
a heat exchanger, wherein the heat exchanger is located in the accommodation space
Implementation Method 2
both surfaces of the display module...can dissipate heat and have good heat participation capability
Implementation Method 3
A direction of the first airflow is opposite to a direction of the second airflow in the heat exchanger
Data Source
AI summary
A display includes a housing, a cover plate, a main board, a display module, and a heat exchanger. The housing has an opening and an accommodation space. The cover plate covers the opening. The main board is arranged in the accommodation space. The display module arranges in the accommodation space and electrically connects to the main board. The display module has a display side and a backside. The display side is located between the cover plate and the backside. The heat exchanger is located in the accommodation space which includes a first chamber and a second chamber. The display module separates the first chamber and the second chamber. The heat exchanger locates in the second chamber. The first chamber communicates to an outside of the housing having a first channel included the main board and the backside. The second chamber is not communicated to the outside of the housing.