Switched-Mode LED Display Unit for Fire Smoke Exhaust Ventilation
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Solution Overview
Problem
Conventional LED display screens struggle to meet fire-fighting smoke exhaust and ventilation requirements without reducing screen area or parameter configurations, limiting their application in building designs.
Innovation Solution
A switched-mode LED display unit incorporating a mounting member, an opening-closing actuator, and a pressing member, where the actuator, such as a spring hinge, motor assembly, or pneumatic/hydraulic rod, and the pressing member, like an electrically controlled switch gear or high-temperature automatic tripping gear, work together to release the mounting member upon a triggering command, allowing the LED display unit to open and close, thus meeting ventilation requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional LED display screen is used to meet fire-fighting smoke exhaust requirements, then the screen area or parameter configuration must be reduced, but this reduces the display performance and visual effect
Solution Approach 1:
The display screen is designed with dynamic opening and closing capability through a mounting member that can rotate between a first position (closed) and a second position (open). This dynamic structure allows the screen to switch between providing full display area and providing smoke exhaust access, resolving the contradiction between maintaining large screen area and meeting fire safety requirements.
Solution Approach 2:
The display system is segmented into a display unit and a mounting member that can be independently controlled. The mounting member can be opened to allow smoke exhaust while the display unit remains intact, separating the fire safety function from the display function and allowing both to operate optimally without compromising screen area.
2Reliability
If a conventional LED display screen is used to meet fire-fighting smoke exhaust requirements, then the screen area or parameter configuration must be reduced, but this reduces the display quality
Solution Approach 1:
The dynamic opening and closing mechanism allows the display to maintain full parameter configuration and brightness quality when closed, while providing smoke exhaust access when opened. The display quality is preserved in the closed state, and fire safety is activated only when needed.
3Reliability
If an opening-closing mechanism is added to the LED display unit, then fire smoke exhaust ventilation is enabled, but the device complexity increases
Solution Approach 1:
The mounting member is designed with a self-locking feature that automatically locks in the closed position through a locking member engaging with a limiting structure. This self-locking mechanism eliminates the need for continuous active control to maintain the closed position, reducing system complexity while ensuring fire safety compliance.
Solution Approach 2:
The opening-closing function is extracted as a separate mounting member that can rotate independently, rather than integrating the mechanism directly into the display unit. This separation simplifies the overall system design and allows the mounting member to be optimized specifically for the opening-closing and locking functions.
4Stability of the object's composition
If a locking mechanism is added to keep the display unit closed, then seamless integration is maintained, but the device complexity increases
Solution Approach 1:
The locking member automatically engages with the limiting structure when the mounting member is in the closed position, providing self-locking functionality. This passive locking mechanism maintains seamless integration without requiring complex active control systems or additional components.
Solution Approach 2:
The locking member acts as an intermediary element between the mounting member and the support structure, providing a simple mechanical engagement that ensures seamless integration while minimizing complexity. The limiting structure provides the engagement point, and the locking member connects them in a straightforward manner.
Data Source
AI summary
A switched-mode light-emitting diode (LED) display unit satisfying fire-fighting smoke exhaust and ventilation requirements includes an LED display unit, a mounting member, an opening-closing actuator and a pressing member. The LED display unit is mounted on the mounting member and the mounting member is mounted on a display panel by an opening-closing actuator and pressed against the display panel by a pressing member. The switched-mode LED display unit provides the pressing member that works to release the pressed mounting member after obtaining a triggering command and the opening-closing actuator that turns on the LED display unit subsequently, thereby meeting the fire smoke exhaust ventilation requirement of the internal surface or the external surface of a building.