Multi-Layer Sealing Ring Structure for Waterproof LED Displays
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Solution Overview
Problem
LED display screens suffer from poor waterproofing, allowing moisture and dust to enter, which shortens their service life and can cause short circuits, especially when installed outdoors in rainy or snowy conditions.
Innovation Solution
A sealing ring with a ring body featuring a ring groove, first and second convex rings, and a flange structure that increases pressure to prevent air and water infiltration, combined with multiple ring grooves and a wavy cross-section for enhanced sealing, and the use of sealing rings between the power box and the box, and between the box and the module to create a multi-layer sealing effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple sealing structure is used, then the device complexity is reduced, but the waterproofing performance deteriorates
Solution Approach 1:
The sealing ring is divided into multiple functional segments: a base sealing layer, multiple convex rings (first convex ring, second convex ring, third convex ring) at different positions, and a flange structure. Each segment performs a specific sealing function at different locations along the groove, creating a multi-stage sealing system that enhances waterproofing without requiring complex external components
Solution Approach 2:
The sealing structure transitions from a simple single-dimensional ring to a multi-dimensional configuration with convex rings extending radially outward at different heights and positions. The flange adds another dimensional element by extending perpendicular to the main ring plane, creating a three-dimensional sealing profile that effectively blocks water infiltration paths
2Reliability
If multiple convex rings and flange structures are added to improve sealing, then the waterproofing performance is improved, but the manufacturing complexity increases
Solution Approach 1:
Multiple sealing functions (base sealing, convex ring sealing, flange sealing) are merged into a single integrated sealing ring component. The first convex ring, second convex ring, and third convex ring are all formed as part of the same ring body, eliminating the need for separate sealing components and reducing assembly steps while maintaining effective multi-stage sealing
Solution Approach 2:
The sealing ring utilizes material parameter changes through elastic deformation. The rubber or elastomer material deforms elastically under compression to conform to the groove geometry and maintain sealing pressure. The flange structure leverages elastic recovery to ensure continuous contact and sealing effectiveness, transforming material properties into functional sealing behavior
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 sealing ring effectively prevents air and water from entering the LED display screen, significantly reducing the risk of moisture-related damage and short circuits, thereby improving the waterproofing performance and extending the service life of the LED display screen.
Implementation Method 1
The pressure between the first convex ring and the sealed body is increased, so that the first convex ring is squeezed to a great extent, and the infiltration of air and water can be effectively prevented
Implementation Method 2
The material of the sealing ring is rubber or elastomer, which has good elasticity and can be deformed to fit the groove
Data Source
Figure 1
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AI summary
Provided is a sealing ring, including a ring body, wherein the ring body includes a ring groove, a first convex ring is provided on each of the upper and lower surfaces of the bottom wall of the ring groove, and the first convex ring is a closed ring with the same extension direction as the ring groove. The side wall of the ring groove reduces the impact force of water, pressure between the first convex ring and sealed body is increased, and the sealing performance of the first convex ring is improved. Further provided is An LED display screen, including a module, box, power box and a plurality of sealing rings, wherein a first sealing ring is disposed between the power box and box, a second sealing ring is disposed between the box and module; the two rings have good sealing performance, which improves sealing performance of the LED screen.