Fire protection technology of LED display

The fireproof material of LED display mainly includes the wire used in LED display, power supply, fireproof material of external protective structure and plastic package.

(1) in most LED display applications, the larger the unit area of LED display is, the greater the power consumption is, and the higher the requirement is for the electrification stability of wires.In many wire products, used to meet the requirements of national standard wire to ensure the safe stability, it requires three things: wire core line of copper conductive carrier, core area of tolerance values in the standard range, parcel wire core reach the standard of rubber insulation and flame retardancy, relatively general aluminium wire core, wire core of smaller cross-sectional area and insulation level of rubber wire, electric performance is more stable, not easy to short circuit happens.

(2) power products certified by UL are also selected for similar products. Their effective conversion rate can ensure the safety and stability of power load and can work normally under high external temperature.

(3) in the material aspect of the LED display external protection structure, high fire rating on the market of LED display products are mostly used fire aluminum-plastic plate, its excellent fire resistance, fire retardant sex is extremely strong, normal aluminum-plastic plate with high temperature, the rain cold and hot shock aging faster, the more humid climate season rain infiltration screen body internal cause short-circuit fire electronic components.

(4) LED display fire prevention materials and an important part of the plastic package, plastic package is primarily a unit module mask pan, the use of materials is mainly use the raw material which has the function of flame retardant PC + glass fiber materials, not only has the function of flame retardant, better in the high and low temperature, and long-term use, not deformation, not brittle cracking, combined with good sealing glue used at the same time, can effectively block the external environment of rainwater in internal that cause a short circuit fire.

In addition to the raw material can affect the fire prevention effect of internal and external configuration and design also is very important, but involves the fireproof problem of heat dissipation, the main external configuration will work in LED display at the same time configuration fan on the screen body internal heat cooling and air conditioning, suggested that every 8 ~ 10 m squared 1 p air conditioning assembly, to ensure that the screen is normal temperature in a constant temperature, air conditioning or fan configuration does not reach the designated position will cause uneven cooling treatment, easy to cause the screen body caused by temperature rise within safe hidden trouble.At the same time, many LED companies in the enclosure protection grade test, simply to simulate the external environment of spray waterproof test, waterproof effect on the durability and strength to research, so cause the LED display products use after a period of time will have water seepage happens, it's short service life of outdoor LED display is easy to fire or one of the important reasons.When dealing with thunderstorm weather, the lightning arrester set in the screen body is an essential device to avoid damaging the screen internal devices due to lightning strike. The lightning arrester can directly lead lightning into the ground without affecting the screen.