LED display fireproof raw materials mainly include the LED display internal use of wire, power supply, external protection structure fireproof materials and plastic sets of these four aspects.
(1) in most LED display applications, the larger the unit area of the LED display, the greater the power consumption, the higher the requirements of the wire power stability. In many wire products, the use of wire to meet the requirements of the national standard to ensure its safety and stability, its requirements are three points: the core of the copper conductive carrier, the core cross-sectional area tolerance in the standard range of values, wrapping the core of the rubber insulation and flame retardant to meet the standard, compared to the general aluminum core, the core cross-sectional area is small, the insulation level of the rubber is not enough wire, the energized performance is more stable, not easy to short-circuit situation.
(2) through the UL certification of power supply products is also the choice when choosing similar products, its effective conversion rate can ensure the safety and stability of the power supply load, in the case of high external ambient temperature, can also work normally.
(3) in the LED display external protective structure of the material, the market is a higher level of fire protection LED display products are mostly used fireproof aluminum plastic plate, its excellent fire resistance, fire retardancy is also extremely strong, conventional aluminum plastic plate with high temperature, rain and cold heat shock aging faster, in the more humid climate season rain dew is easy to penetrate into the screen body inside leading to electronic components short circuit caused by fire.
(4) LED display fireproof raw materials and an important part, that is, the plastic set, plastic set is mainly the unit module mask bottom shell of the use of materials, the main raw materials used is a flame retardant PC + glass fiber material, not only has a flame retardant function, more in high and low temperatures and long-term use, not deformed, will not become brittle and cracked, while combined with the use of better sealing glue, can effectively block External environment of rainwater penetration into the interior and thus cause a short circuit fire.
In addition to the internal raw materials will affect the effect of fire, the external configuration and design is also very important, but the external configuration is mainly related to the fire problem in the heat, in the LED display work at the same time will be configured exhaust fans and air conditioning on the internal cooling of the screen body, it is recommended that every 8 to 10m² assembly 1P air conditioning, to ensure that the temperature inside the screen to maintain a normal constant temperature, air conditioning or exhaust fan configuration is not in place will Caused by uneven heat dissipation treatment, easily lead to the internal security risks caused by the temperature rise screen. At the same time, many LED companies in the protection level of the box test, only a simple simulation of the external environment of the spray waterproof test, waterproof effect durability and strength to be proven, so caused in the LED display products after a period of time there is water seepage, which is an important reason for the outdoor LED display is prone to fire or short life. In response to thunderstorms, the lightning arrester set up inside the screen is a necessary device to avoid strong lightning strikes and damage to the internal devices of the screen, the lightning arrester can directly import lightning into the ground, and will not have an impact on the screen.
