How to do a good job of fire prevention of LED display? The key to the application of LED display fire protection technology is closely related to the LED display fire protection raw materials and cabinet technology. Fireproof raw materials include four layers: wires and power sources used inside the LED display, fireproof materials and plastic kits for external safety protection structures;
1. In most LED display applications, the larger the display per unit area, the greater the power consumption, and the higher the requirements for the stability of the conductors. Among many wire products, only the wires that meet the requirements of national standards can ensure safety and reliability. There are three regulations: the core is a copper conductive carrier, the cross-sectional area tolerance of the core is within the standard range, and the insulation and flame retardancy of the rubber covering the core meets the standard specifications, which is different from the ordinary copper-clad aluminum core. Wires with small core cross-sectional area and insufficient insulation rubber grade have more stable charging performance and are not easy to cause short circuits;
2. UL-certified power products are the best choice for the same industry, and their reasonable conversion rate can ensure the safety and stability of the power load, and can work normally in a hot external environment.
3. As for the materials for the external safety protection structure of the LED display, most of the display products with higher fire resistance on the market are fireproof aluminum-plastic panels, which have excellent fire resistance, fire safety and flame retardancy. The special materials for core materials have relatively high fire resistance. Strong oxygen aging performance, melting point temperature 135, decomposition temperature 300, environmental protection performance, UL94 halogen-free, in line with SGS, flame retardant B-S1, d0, t0, and refer to the specifications for use. The aluminum-plastic panels of ordinary outdoor display products at high temperatures Under the impact of rainwater, it ages rapidly. Under relatively humid weather conditions, rainwater and dew can easily penetrate into the screen, causing short circuit of electronic components and fire accidents.
4. The fireproof raw material of LED display has a key part. If we talk about plastic kits, plastic kits are mainly used as the raw material for the bottom shell of the unit module mask. The key application raw material is the PC glass fiber raw material with flame-retardant effect, which not only has the flame-retardant effect, but also won't work under high temperature and long-term application Deformed or brittle and easy to crack, it can be directly combined with glue with good sealing performance to reasonably prevent rainwater from the external environment from penetrating into the interior and causing short-circuit fire.
5. In the absence of breakthroughs in key raw materials such as lamp beads, increasing the current will not improve the brightness.
In addition, internal raw materials will affect the actual effect of fire protection. The external configuration is as critical as the design, but the key to the external configuration includes heat dissipation in fire protection. When the display screen is working, it will be equipped with exhaust fans and air conditioners to dissipate heat and heat inside the screen. It is recommended that every 8-10 air conditioners in the square assembly line 1P ensure that the temperature in the screen is kept at a normal constant temperature. If the air conditioner or exhaust fan is configured improperly, the heat dissipation will not be evenly distributed, which may cause safety risks inside the screen due to the increase in temperature. In addition, many LED display companies simply simulate the test of spray waterproofing in environmental factors when testing the protection level of the cabinet. The durability and strength of the actual waterproof effect need to be verified, resulting in water seepage after a period of application. This is also the key reason why outdoor displays are very easy to catch fire or have a short service life. When dealing with thunderstorm temperatures, the lightning arrester of the screen equipment is necessary, and it is also a special tool to avoid lightning strikes and burn the internal parts of the screen. At the same time, it will cause thunder and lightning to enter the road, and it is not easy to cause damage to the screen.
6. Install correctly
Because the full-color LED display should be electronic components, some of its main raw materials are also combustibles, so it must be fundamentally "flammable", using high-quality power supplies, wires, ICs, connecting devices and other combustible electronic components to reduce the failure rate , Adjust the fire probability of the LED display; technically, in the entire process of the full-color LED display installation, professionals must do a good job in the installation, guidance and inspection, in order to prevent problems before they occur; close to the flammability of the LED display.
