LED Display Plug-In Power Connection With Switchable Contacts

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Solution Overview

Problem

The assembly of LED display units is complicated by the need for flexible power and data line connections, which can lead to safety accidents when connecting with an external power supply.

Innovation Solution

A plug-in connection device with a power supply plug-in connection structure, featuring a first receptacle assembly and a first plug assembly, where a switch allows for the electrically conductive members to be connected or disconnected, simplifying wiring and ensuring safety by preventing continuous assembly with an external power supply.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If flexible and independent power lines are used for connection between display units, then wiring flexibility is improved, but wiring complexity increases and safety risks occur during continuous assembly

Engineering Contradiction:
Improvewiring flexibilityVSAvoidwiring complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The power line connection is segmented into modular plug and receptacle components. Each display unit is equipped with a plug assembly containing electrically conductive members that can be independently connected to receptacle assemblies on adjacent units, eliminating the need for continuous wiring throughout the entire display structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A switch assembly is introduced as an intermediary component between the electrically conductive members and the external power supply. This switch assembly controls the electrical connection state, allowing the system to transition between connected and disconnected states, thereby simplifying the wiring control mechanism while maintaining flexibility.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Use of energy by moving object

If power lines are connected with external power supply during continuous assembly, then power supply capability is improved, but safety accidents are likely to occur

Engineering Contradiction:
Improvepower supply capabilityVSAvoidsafety during assembly
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The electrical connection state is made dynamic through the switch assembly, which can transition the electrically conductive members between connected and disconnected states. This dynamic control allows the system to be safely disconnected during assembly operations and connected during normal operation, eliminating safety hazards while maintaining power supply capability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The plug and receptacle assemblies are designed to be self-contained with integrated switch control, allowing each display unit to independently manage its own electrical connection state without requiring external intervention or complex centralized control systems.

Inventive Principle:
Principle #25Self-service

3Productivity

If display units are continuously assembled with power lines connected, then assembly continuity is improved, but safety hazards increase

Engineering Contradiction:
Improveassembly continuityVSAvoidsafety hazards during assembly
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The electrical connection is implemented as a periodic action rather than a continuous state. The switch assembly enables the system to alternate between disconnected states during assembly operations and connected states during normal display operation, allowing continuous productivity while eliminating safety hazards through periodic disconnection.

Inventive Principle:
Principle #19Periodic action

Data Source

PatentEP4287415B1Plug-in connection device of LED display device, and LED display device
Publication Date: 2026.04.08 LEYARD
  • EP4287415B1 patent drawingFigure 1
  • EP4287415B1 patent drawingFigure 2
  • EP4287415B1 patent drawingFigure 3

AI summary

The present invention provides a plug-in connection device of an LED display device, and the LED display device. The plug-in connection device includes a power supply plug-in connection structure, the power supply plug-in connection structure includes: a first receptacle assembly (10) including a first base (11), a first electrically conductive member (12), and a switch (13), the switch (13) is able to make the first electrically conductive member (12) in a connected state or a disconnected state; and a first plug assembly (20) including a second base (21), a second electrically conductive member (22), and a first driving member (23), the second electrically conductive member (22) has a first connection position penetrating out of the second base (21) and being in contact conduction with the first electrically conductive member (12) and a first disconnection position retracted into the second base (21) and separated from the first electrically conductive member (12).