Led display fire prevention and control technology is mainly good and led display fireproof raw materials, box technology has a great relationship.
Fireproof raw materials mainly include led display inside the use of wire, power, external protective structure of fire protection materials and plastic sets of these four aspects:
The first point: in most of the led display applications, led display unit area display the greater the greater the power consumption, the stability of the wire power also has a higher demand. Many wire products, the use of GB requirements in line with the requirements of the wire to ensure its safety and stability, and its requirements are three points: the core for the copper wire conductive carrier, core cross-sectional area tolerance in the standard range, wrapped wire core insulation And flame retardant to achieve the standard, compared to the general copper clad aluminum core, core cross-sectional area is too small, the insulation rubber grade is not enough wire, power performance is more stable, not prone to short circuit conditions;
The second point: UL certified power supply products is also the best choice for the selection of similar products, the effective conversion rate to ensure the power load safety and stability in the external environment, hot conditions, but also work properly;
The third point: the LED display in the external protective structure of the material, the market higher fire rating led display products are mostly using fire-resistant aluminum-plastic panels, the fire resistance is excellent, fire resistance is also strong, Oxygen aging performance is also very strong, the melting point temperature 135 ℃, decomposition temperature ≥ 300 ℃, environmental performance, low smoke zero halogen, in line with SGS, flame retardant B-S1, d0, t0, reference standard UL94, GB / 8624- 2006. The general outdoor led display products of aluminum-plastic plate with high temperature, rain and hot and cold impact aging faster, so that in the relatively humid climate season, rain easily penetrate into the screen inside the electronic components lead to short-circuit caused by fire;
The fourth point: led display fireproof raw materials there is an important part, that is, plastic kits, plastic kits are mainly unit module mask shell material, the main use of raw materials is a flame retardant PC + fiberglass material, not only has Flame-retardant function, more at high and low temperature and long-term use, no deformation, no brittle cracking, combined with good sealing glue used, can effectively block the external environment of the rain into the internal short-circuit Fire.
In addition to the internal raw materials will affect the fire effects, external configuration and design is also very important, but the external configuration is mainly related to the fire problem in the heat, led display work at the same time will configure the exhaust fan and air conditioning on the screen body cooling , It is recommended that every 8-10 square assembly 1P air conditioning to ensure that the temperature inside the screen to maintain normal temperature, air conditioning or exhaust fan configuration is not in place will cause uneven heat treatment, easily lead to the temperature rise caused by internal safety hazards. At the same time a lot of LED enterprises in the box of the protection level test, just a simple simulation of the external environment, spray waterproof test, waterproof effect of persistence and strength to be verified, resulting in led display products used after a period of time There is the case of water seepage, which is the outdoor led display prone to fire or short life of the important reasons. In response to thunderstorms, the screen device arrester is to avoid lightning strikes and burn the internal parts of the device essential tools, you can directly into the ground lightning, and will not affect the screen body.
The above are the internal reasons for the led display, we certainly can not ignore the late maintenance process caused by human factors, such as in the subsequent maintenance work, the operator did not follow the strict process of operation (module screw did not tighten, Wire polarity reversed, after the operation of conductive objects, etc.), easily lead to fire house.
Similarly, in the lighting industry, the main cause of the fire is due to the installation location is not standardized or improper use of materials, etc., to prevent lighting the main measures is to strictly control the distance between the combustible, standard installation and insulation protection.