Retractable LED Display Protective Devices for Collision Prevention
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Solution Overview
Problem
Existing LED display screens are vulnerable to damage during mounting or dismounting processes, particularly those with dot pitches below 2 mm, as they lack effective protective devices to prevent scraping and impact.
Innovation Solution
The implementation of retractable protective devices with a parallel four-linkage mechanism on adjacent display screen boxes, which protrude to protect the sides during non-spliced states and retract during splicing, ensuring collision protection without interfering with the splicing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed protective covers are used to protect display screen boxes during transportation, then the display screen boxes are protected from shaking and stacking pressure, but the protective covers cannot protect the boxes during mounting or dismounting processes and are not easy to manage
Solution Approach 1:
The protective device is designed to be retractable rather than fixed, allowing it to dynamically change its state between extended (for protection) and retracted (for splicing). This dynamic characteristic enables the same device to provide protection during transportation while not interfering with mounting and dismounting operations, thus resolving the contradiction between protection capability and ease of operation
Solution Approach 2:
The protective device is divided into movable and fixed parts, with the protective plate being movable relative to the display screen box. This segmentation allows the protective function to be separated from the splicing function, enabling independent optimization of each function without mutual interference
2Reliability
If retractable protective devices are used to protect display screen boxes during mounting or dismounting, then the boxes are protected from collision, but the devices must not interfere with the splicing process between adjacent boxes
Solution Approach 1:
The protective device utilizes dynamic movement through a parallel four-bar linkage mechanism that allows the protective plate to extend and retract. During splicing, the device retracts to maintain precision; during handling, it extends to provide protection. This dynamic adjustment resolves the contradiction between protection capability and splicing precision
Solution Approach 2:
The protective device extends in advance before potential damage occurs during mounting or dismounting operations. By proactively positioning the protective plate outward, it prevents collision damage before it can happen, while the ability to retract ensures it does not interfere with the splicing process that requires high precision
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 retractable protective devices effectively prevent damage to the display screen boxes during handling while allowing seamless splicing and maintaining high precision, ensuring the integrity and quality of the LED display.
Implementation Method 1
the first protective device and the second protective device respectively comprises a parallel four-linkage mechanism which comprises a protective plate
Data Source
Figure 1
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AI summary
An LED display screen with protective devices is disclosed. Two adjacent display screen boxes are respectively provided with a first protective device (1) and a second protective device (2) which are retractable; first protective device (1) and second protective device (2) are correspondingly arranged; first protective device (1) is linked with second protective device (2) so that the two adjacent display screen boxes are spliced; and a portion of first protective device (1) and second protective device (2) respectively protrude from the display screen boxes when the two adjacent display screen boxes are not spliced. When the display screen boxes are not spliced, the protruding portions of protective devices may protect the sides of display screen boxes to prevent damage to the display screen boxes caused by collision, etc. Because the protective devices are retractable, they can retract without affecting the splicing between display screen boxes when the display screen boxes are spliced.