Reverse Electromagnet for LED Lamp Panel Maintenance

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Solution Overview

Problem

Traditional front-maintenance methods for LED display screens are complex, costly, and prone to damage, with existing tools either causing disengagement of LED lamp beads, damage to face masks, and deformation of Printed Circuit Boards, or being inefficient and costly.

Innovation Solution

A display screen assembly with a reverse electromagnet provided at the rear side of the lamp panel, allowing magnetic attraction for fixation and demagnetization for easy disassembly, combined with a safety pin and positioning pin for secure positioning and easy maintenance, and a ferromagnet for additional support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a strongly-magnetic tool is used to pull down LED display units for maintenance, then the display units can be removed from the frame structure, but LED lamp beads disengage, face masks are damaged, and PCB boards are deformed

Engineering Contradiction:

Improvemaintenance operationVSAvoidcomponent integrity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the strongly-magnetic tool with a reverse electromagnet that uses electromagnetic fields to generate controlled magnetic attraction forces. The electromagnet can be precisely controlled to provide just enough force to remove display units without causing damage to LED lamp beads, face masks, and PCB boards, thus substituting a controllable electromagnetic system for a purely mechanical/magnetic system that causes harm.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of repair

If a specially-made barb tool is used to hook out LED lamp panels through square holes, then the lamp panels can be removed for maintenance, but the maintenance process becomes complex and costly, and face masks and lamp beads are easily destroyed

Engineering Contradiction:

Improvelamp panel removalVSAvoidmaintenance process

Core Design Contradiction:

Ease of repairVSDevice complexity

Solution Approach 1:

The patent replaces the complex mechanical barb tool system with a reverse electromagnet that uses electromagnetic fields for attachment and removal. This eliminates the need for square holes, face masks, and complex manual manipulation, simplifying the maintenance process while reducing the risk of damaging components.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The reverse electromagnet acts as an intermediary device that provides a controlled magnetic field between the maintenance tool and the display unit. This intermediary mechanism allows for gentle attachment and removal without direct mechanical contact that could damage the LED components, replacing the need for specialized barb tools and face masks.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If LED display units are forcibly pulled down using a strongly-magnetic tool, then maintenance can be achieved, but maintenance cost increases and maintenance efficiency decreases

Engineering Contradiction:

Improvemaintenance capabilityVSAvoidmaintenance efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The reverse electromagnet provides a controlled and efficient method for removing display units compared to the strongly-magnetic tool. The electromagnetic field can be precisely controlled to attach and release units quickly without causing damage that would require rework, thereby improving maintenance efficiency while reducing costs associated with component replacement.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Enables efficient and cost-effective front-maintenance of LED display screens by avoiding damage and reducing maintenance complexity, ensuring reliable operation and cost savings.

Implementation Method 1

a reverse electromagnet provided at a rear side of the lamp panel

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Implementation Method 2

When the reverse electromagnet is energized, the magnetism of the reverse electromagnet disappears

Methodology Applied

Scientific EffectElectromagnet: Electromagnet

Implementation Method 3

A display screen assembly and display device having the same... a ferromagnet for additional support

Methodology Applied

Scientific EffectFerromagnetism: Ferromagnetism

Data Source

PatentEP3193321B1Display screen assembly and display device having the same

Publication Date: 2023.11.08 LEYARD

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AI summary

The invention provides a display screen assembly and a display device having the same. The display screen assembly includes a lamp panel (10) and a reverse electromagnet (21) provided at a rear side of the lamp panel (10). The technical solution of the invention effectively solves the problem in the prior art that a display screen assembly is difficult to dismount.