LED Display Water-Retaining Structure for Position Stability
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Solution Overview
Problem
The rebound force of seals in existing LED display devices causes the display module to deviate from its original installation position, leading to abnormal display screens and water ingress into the device.
Innovation Solution
The LED display device incorporates a water-retaining structure with an outer surrounding plate and an inner water-retaining plate, forming drainage channels to block water entry and reduce contact points between the module and the box, eliminating the need for additional fixing forces and preventing module deviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seal is used with larger squeezing pressure to achieve better sealing effect, then the sealing performance is improved, but the rebound force causes the display module to deviate from its original installation position
Solution Approach 1:
The sealing structure is divided into multiple independent sealing regions: a first sealing region with a first seal and a second sealing region with a second seal. Each sealing region operates independently with its own compression and rebound forces, preventing the cumulative rebound force from causing display module deviation while maintaining effective sealing at each region.
Solution Approach 2:
Different sealing structures are applied to different regions: the first sealing region uses a seal abutting against the box, while the second sealing region uses a seal abutting against the display module. This localized differentiation allows each seal to be optimized for its specific position, achieving effective sealing without excessive overall compression that would cause rebound-induced deviation.
2Reliability
If a seal is compressed to generate sealing force, then water-retaining sealing is achieved, but the rebound force creates additional fixing force requirements between display module and box
Solution Approach 1:
The sealing function is segmented into two separate sealing regions with distinct seals. The first seal handles sealing at the box interface, while the second seal handles sealing at the display module interface. This segmentation distributes the sealing force requirements, reducing the need for excessive compression and minimizing rebound forces that would increase fixing force requirements.
Solution Approach 2:
The water-retaining structures act as intermediaries between the seals and the external environment. These structures guide water flow and provide drainage channels, allowing the seals to function at lower compression levels since the water-retaining structures prevent water ingress even with reduced sealing pressure, thereby reducing rebound forces.
3Manufacturing precision
If the display module is fixed firmly to the box to prevent deviation, then position stability is improved, but water may still ingress through the sealing interface
Solution Approach 1:
The sealing system is segmented into two independent sealing regions, allowing the display module to be firmly positioned for stability while each seal independently prevents water ingress at its respective interface. The first seal protects the box interface, and the second seal protects the display module interface, providing redundant water protection without compromising position stability.
Solution Approach 2:
Water-retaining structures serve as intermediaries between the sealing interfaces and the external environment. These structures with drainage channels provide an additional protective layer that guides water away from critical interfaces, allowing the display module to be firmly fixed without increasing water ingress risk through the sealing interfaces.
Data Source
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AI summary
The present invention provides an LED display device. The LED display device includes: a box provided with a first wire hole; a display module connected to the box and spaced apart from the box by a gap, and provided with a second wire hole; a first water-retaining structure including an outer water-retaining surrounding plate encircling a circumferential outer side of the first wire hole, a first drainage channel being provided between the outer water-retaining surrounding plate and the box or the display module; and a second water-retaining structure including a first mounting chamber and an inner water-retaining surrounding plate, the inner water-retaining surrounding plate extending into the first mounting chamber, the inner water-retaining surrounding plate being located on the circumferential outer side of the first wire hole and on a circumferential inner side of the outer water-retaining surrounding plate, the inner water-retaining surrounding plate being provided with a water-retaining frame on an outer wall, and the outer wall of the inner water-retaining surrounding plate being spaced apart from a side wall of the water-retaining surrounding plate frame by a second drainage channel. The technical solution of the present invention effectively solves the problem that the display module deviates from the original installation position on the box under the action of the rebound force of the seal in the related art.