Slim Digital Signage Cooling with Pre-Filter and Membrane
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Solution Overview
Problem
Digital signage faces challenges in effectively exhausting heat generated by display panels and driving circuit boards, especially in outdoor environments with high temperatures and humidity, where conventional cooling methods may lead to reduced durability due to foreign substance ingress and frequent filter replacements.
Innovation Solution
A slim-designed digital signage incorporating a cooling structure with a pre-filter and membrane filter configuration, where the pre-filter is spaced apart from the inlet and the membrane filter is positioned under the display panel, using a Gore-Tex material to filter fine dust and moisture, and a fan to direct air flow for efficient heat dissipation, while maintaining a compact size and extending filter lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling methods are used with filters close to the inlet, then heat dissipation is achieved, but foreign substances ingress and filters require frequent replacement
Solution Approach 1:
The pre-filter is positioned to intercept foreign substances before they reach the membrane filter, performing preliminary filtration action. This protects the main filter from contamination and extends its lifespan while maintaining effective heat dissipation
Solution Approach 2:
The pre-filter acts as an intermediary element between the inlet and the membrane filter, capturing larger particles and reducing the load on the main filter. This mediator approach allows the system to maintain reliability while achieving effective cooling
2Duration of action of stationary object
If filter area is increased to extend replacement cycles, then filter lifespan is improved, but device width increases
Solution Approach 1:
The pre-filter is arranged obliquely rather than parallel to the inlet, utilizing the vertical dimension and diagonal space. This dimensional reconfiguration allows a larger filter area to be accommodated within the existing device width constraints, extending filter lifespan without increasing overall device dimensions
3Length of moving object
If pre-filter is positioned close to inlet for compact design, then device slimness is maintained, but filter effectiveness is reduced
Solution Approach 1:
The pre-filter performs preliminary filtration of larger particles before air reaches the membrane filter, ensuring that even with compact positioning, the main filter remains protected and effective. This preliminary action maintains filtration effectiveness while enabling slim device design
Solution Approach 2:
The pre-filter serves as a protective intermediary that captures contaminants early in the airflow path, allowing the membrane filter to focus on fine particle removal. This intermediary function maintains high filtration effectiveness despite the compact arrangement
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 solution effectively manages heat dissipation in a slim design, reducing the risk of foreign substance ingress and extending filter replacement cycles, ensuring reliable operation in harsh outdoor conditions while maintaining image quality and visibility.
Implementation Method 1
a membrane filter positioned under the display panel using a Gore-Tex material to filter fine dust and moisture
Implementation Method 2
a fan to direct air flow for efficient heat dissipation
Implementation Method 3
a digital signage having a slim design that may exhaust the heat generated from a display panel and a driving circuit board effectively
Data Source
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AI summary
There is disclosed a digital signage including a fan, a display panel, a housing having the display panel arranged in a front surface, the housing comprising an inlet formed in a lower portion of a lateral surface and an outlet formed in an upper portion of a back surface or a top surface, a fan configured to suck air into the housing via the inlet and to blow the air exhausting via the outlet after penetrating a back surface of the display, a pre-filter mounted adjacent to the inlet, the pre-filter comprising a plurality of mesh holes, and a membrane filter configured to penetrate the air having penetrated the pre-filter there through and to filter moisture and foreign substances, such that may have a slim design and exhaust the heat generated from a display panel and a driving circuit board effectively.