Fire-fighting linkage device applied to LED display screen

Abstract

This utility model relates to a fire-fighting linkage device for LED displays, including a support back frame, a grid frame, and multiple display modules. The grid frame is set on the support back frame, and the display modules are installed on the grid frame. The support back frame is provided with a push-out mechanism, which is located at the fire sprinkler head. This utility model can push open the corresponding display module when a fire is detected, increasing the transparency of the screen and effectively solving the problems of insufficient fire exhaust opening rate of the display screen and fire sprinkler head being blocked by the screen in the event of a fire.

Description

Technical Field

[0001] This utility model belongs to the field of LED display technology, specifically a fire alarm linkage device applied to LED displays. Background Technology

[0002] Large LED displays such as LED canopies and LED domes have appeared in indoor buildings. These displays are usually installed on the top of the building or cover part of the top space of the building, with the display surface facing downwards so that people below can easily view the screen.

[0003] National mandatory fire protection standards clearly stipulate that in locations with openwork suspended ceilings (such as grids or slats), sprinklers should be installed both above and below the ceiling when the open area accounts for no more than 70% of the total ceiling area, and a baffle plate should be installed above the sprinklers below the ceiling. In addition, the standards also stipulate that when the open area accounts for no more than 15% of the total area, smoke detectors should be installed below the ceiling.

[0004] LED displays installed on the roof of buildings may require the addition of fire sprinklers, water deflectors, smoke detectors, and other fire-fighting facilities in front of the displayed image due to fire safety reasons. This may result in partial image loss or partial obstruction of the viewing angle, which seriously affects the viewing effect of the display screen.

[0005] Adding circular or oblong holes to the display module is one way to increase the transparent area, but the LED pixel pitch determines the display's resolution and clarity. Because LED display panels are densely packed with light-emitting diodes, driving components, and printed circuitry, the area available for perforation is limited. Only when the pixel pitch is greater than 10mm can perforations in the display module potentially achieve a 70% transparency rate.

[0006] Therefore, existing LED display designs cannot meet the requirements of high-definition display while also satisfying the national fire safety requirements for high transparency area ratio.

[0007] In addition, when a fire occurs, the fire alarm control panel will cut off the non-fire-fighting power supply to the fire area and related areas. Therefore, the solution of using power connection control cannot be truly applied to indoor fire-fighting scenarios. Utility Model Content

[0008] The purpose of this utility model is to provide a device that automatically pushes out during a fire. It mainly detects the smoke concentration by connecting to the smoke sensor of the fire protection system, and then controls the push-out mechanism to push out the module to form a fire sprinkler channel. Depending on the actual fire situation, the push-out mechanism can be controlled independently to carry out targeted fire extinguishing. It is also a fire linkage device that can operate even when the power is cut off, in order to meet the fire protection requirements of LED displays.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a fire alarm linkage device applied to an LED display screen, comprising,

[0010] The back support frame and the grid frame are provided. The grid frame is set on the back support frame and multiple display modules are set on the grid frame. The back support frame is provided with an ejection mechanism.

[0011] As a preferred technical solution for fire alarm linkage devices applied to LED displays, the display module is magnetically fixed to the grid frame.

[0012] As a preferred technical solution for fire-fighting linkage devices applied to LED displays, a control module is provided on the support frame, and the control module is connected to the top-out mechanism.

[0013] As a preferred technical solution for fire-fighting linkage devices applied to LED displays, it also includes a charging energy storage device, which is connected to the control module and the ejection mechanism.

[0014] As a preferred technical solution for fire-fighting linkage devices applied to LED displays, the display module has light-emitting pixels on one side and a driving circuit and magnetic structure on the other side. Several magnetic structures are set on the edge of the display module and are attached to the grid edge of the grid frame.

[0015] As a preferred technical solution for fire-fighting linkage devices applied to LED displays, holes are provided in the middle of the grid frame and the middle of the display module to increase permeability and facilitate smoke exhaust and heat dissipation.

[0016] The beneficial effects of this utility model are: when a fire is detected, the corresponding module can be pushed open to increase the transparency so as not to hinder fire fighting. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the present invention.

[0020] Reference numerals: 200, support frame; 204, vertical frame; 205, horizontal tube; 205a, extension frame; 206, hoop; 207, charging and energy storage device; 203, control module; 201, ejection mechanism; 100, grid frame; 300, control box; 101, module; B, first oblique angle; C, second oblique angle; D, third oblique angle. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0025] Example 1

[0026] Reference Figures 1-2 This embodiment provides a fire alarm linkage device for LED displays, including a support frame 200 and a grid frame 100. The grid frame 100 is disposed on the support frame 200 and has multiple modules 101. The support frame 200 is provided with a push-out mechanism 201, which is disposed at the fire sprinkler head.

[0027] Specifically, the ejection mechanism can be an electric push rod (stable operation, high control precision, suitable for scenarios requiring fine control), a pneumatic push rod (fast response speed, suitable for rapid response scenarios), a hydraulic push rod (large thrust, suitable for scenarios requiring large force), or a cam mechanism (high reliability and fewer moving parts, suitable for extreme environments), etc., which can realize the module ejection function.

[0028] After power is supplied, the ejector mechanism starts and moves along the working track according to the control command (extend or retract). When the mechanism reaches the preset target position or the physical travel limit, the motor stops rotating, the push rod remains in the current position, and it waits for the next working command.

[0029] The front end of the ejection mechanism is either flat or curved, with a smooth contact surface covered by insulating matte black silicone. In the non-working state, the contact surface is 150mm–200mm away from the module to ensure no reflection when viewing the display screen. In the working state, to ensure even force distribution, the ejection position of the mechanism's front end is at the center of the module, ejecting the module at a uniform speed.

[0030] It should be noted that the fire-fighting ejection mechanism consists of the following core components, designed to achieve intelligent fire-fighting linkage with the LED display screen:

[0031] Ejection Mechanism 201: Utilizes a 12V DC linear motor to drive the push rod, with a stroke of 0-300mm, a thrust ≥300N, and a response time ≤0.5 seconds. The push rod is concealed within the LED module's steel structure, with a matte black coating (reflectivity <5%) that is non-reflective and completely concealed under normal conditions to avoid optical interference. Action Mechanism: Upon triggering, the push rod extends forward, ejecting the front module and creating a water spray fire extinguishing channel, increasing the per-square-meter transparency to 70%.

[0032] The charging energy storage device 207 includes a battery pack and a power management module, specifically...

[0033] Battery pack: This component outputs and stores electrical energy. When the power supply is normal, it charges the battery pack, ensuring the normal operation of the mechanism. In the event of a power outage, the battery pack provides power.

[0034] Power management module: Integrated MOSFET circuit, switching delay <10ms, seamless power supply mode transition.

[0035] The triggering logic of the smoke sensor in the fire protection system is as follows: multi-parameter detection: a laser scattering smoke sensor (detection accuracy ±5%) is used to simultaneously monitor temperature and CO concentration, reducing the false alarm rate.

[0036] This application can also be expanded with a remote control module.

[0037] A control module 203 is provided on the support frame 200, and the control module 203 is connected to the ejection mechanism 201.

[0038] Module 101 is magnetically secured to the grid frame 100. Cables are connected to the back of the LED module to prevent it from flying out and injuring people.

[0039] Specifically, a steel plate is set on the grid frame 100, and the module 101 is fixed in each slot. Magnetic cores are set around the back of the module 101, and the module 101 can be magnetically attracted to the steel plate.

[0040] The display module 101 is magnetically attached to the grid frame 100.

[0041] The support frame 200 and the grid frame 100 can be integrally formed or assembled separately.

[0042] When assembled in parts, such as when used in the case of an LED dome screen, the support frame 200 may specifically include a vertical frame 204 and a horizontal tube 205. The horizontal tube 205 is fixed to the vertical frame 204 by an extension frame 205a, and the grid frame 100 is fixed to the horizontal tube 205 by a hoop 206.

[0043] It should be noted that the number of ejection mechanisms 201 is determined according to the actual required transparency, and the preferred position of the second ejection mechanism is the first oblique angle B, which is furthest from the module 101 in the figure, followed by the second oblique angle C and the third oblique angle D, which are arranged in a rectangle with the oblique angle B and the module 101.

[0044] It also includes a charging energy storage device 207, which is connected to a control module 203 and an ejection mechanism 201.

[0045] A control box 300 is also provided on the back of the grid frame 100, and the control box 300 is connected to the module 101.

[0046] The control box 300 is used to control the display of the control module 101.

[0047] The grid frame 100 has a hollow center, and the display module 101 also has a hollow center with holes. These holes are used for smoke extraction and also serve to reduce weight, provide ventilation, dissipate heat, and allow sound to pass through.

[0048] The workflow for this application is as follows:

[0049] Step 1: Routine monitoring and power standby

[0050] During normal operation, the smoke sensors in the fire protection system continuously monitor the internal environment of the display screen and transmit real-time information to the control module. The charging and energy storage device prioritizes power supply to the system, ensuring a continuous and stable power supply. The system operates in a low-power state, ready to respond to fire signals at any time.

[0051] Step 2: Fire Detection and Signal Triggering

[0052] When the fire protection system detects that the smoke concentration exceeds a preset threshold or the temperature rises abnormally, the control module quickly determines the fire alarm status and triggers the start command of the ejector mechanism. If the main power supply is interrupted, the system automatically switches to battery power to ensure that the actuator movement is not affected by power fluctuations and to guarantee the reliability of the fire response.

[0053] Step 3: Lever Action and Fire Extinguishing Guidance

[0054] The ejection mechanism extends its full stroke within 0.5 seconds, ejecting the target LED module by 300 mm, increasing the dome's transparency per unit area to 70%. The external sprinkler system precisely covers the fire source through this channel, significantly improving fire extinguishing efficiency. Users can remotely monitor the fire situation and manually control the push rod via a mobile app for targeted firefighting in the event of a fire, minimizing damage to the dome and enabling flexible human-machine collaborative operation.

[0055] In dome theater applications, fire suppression modules are set at different angles according to their location within the dome theater scene, so that when all fire suppression modules work simultaneously, they can provide full coverage and eliminate blind spots for fire suppression. In specific applications, fire suppression modules at specific locations are selected to work and extinguish the fire based on the point of ignition.

[0056] Step 4: System Reset and Maintenance

[0057] After the fire is extinguished, the system retracts the push rod via APP command or manual operation, resetting the module to its initial position and restoring display integrity. The system automatically executes a self-test program, checking the push rod stroke, power status, and sensor sensitivity, and periodically replaces batteries and inspects key components to ensure long-term stable operation.

[0058] This application only shows the necessary hardware components. Detailed procedures such as how the smoke sensor transmits signals to the control module, how the control module judges the signals, and how the signal transmission controls the action of the ejector mechanism 201 are not described in detail. Existing electrical control methods are sufficient to achieve this, and this application does not improve upon them.

[0059] It should be noted that the ejection mechanism 201 pushes out module 101 in a destructive manner. In the event of a fire, in order to avoid greater losses and to improve the fire-fighting effect, this level of destructive damage can be disregarded, and screen replacement is also a common occurrence during normal maintenance.

[0060] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fire alarm linkage device applied to an LED display screen, characterized in that: include, Support back frame (200) and grid frame (100), the grid frame (100) is set on the support back frame (200), the grid frame (100) is provided with multiple display modules (101), and the support back frame (200) is provided with an ejection mechanism (201).

2. The fire alarm linkage device applied to an LED display screen according to claim 1, characterized in that: The display module (101) is magnetically fixed to the grid frame (100).

3. The fire alarm linkage device applied to an LED display screen according to claim 1 or 2, characterized in that: The support frame (200) is equipped with a control module (203), which is connected to the ejection mechanism (201).

4. The fire alarm linkage device applied to an LED display screen according to claim 3, characterized in that: It also includes a charging energy storage device (207), which is connected to the control module (203) and the ejection mechanism (201).

5. The fire alarm linkage device applied to an LED display screen according to claim 4, characterized in that: The display module (101) has light-emitting pixels on one side and a driving circuit and magnetic structure on the other side. Several magnetic structures are set on the edge of the display module (101) and are attached to the grid edge of the grid frame (100).

6. The fire alarm linkage device applied to an LED display screen according to claim 5, characterized in that: The grid frame (100) has a hollow center, and the display module (101) has a hollow center with holes.

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