Fire hazards are a serious concern for LED displays, which are widely used in various fields. To prevent fire accidents and protect people and property, this article proposes five strategies for fire protection of LED displays:

LED Screen Fire Analysis

• Wire rods: The wire rods used for LED displays should conform to the national standard, as they need to withstand high power consumption and ensure electrification stability. Low-quality wire rods can cause overheating and short circuits.
• Power supply: The power supply products for LED displays should be certified by UL, as they have a scientific conversion rate and can work under hot external environments. Inferior power supply products can cause voltage fluctuations and fire hazards.
• Protective materials: The protective materials for outdoor LED displays should be resistant to aging, rain, and high temperatures. Aluminum-plastic plates are prone to crack and let moisture penetrate into the screens, resulting in short circuits and fire accidents.
• Plastic housing : The plastic kit for LED displays should be inflaming retarding and durable, as it can prevent deformation and brittleness under high and low temperatures. It should also be combined with glue with fine sealing performance, as it can prevent rain from entering the interior and causing short circuits and fire accidents.

How to prevent fire accidents

• Power supply: The power supply products should have safety certification and a high conversion rate. They should be able to work under high-temperature environments and prevent harmonic currents from causing fires. Large-scale LED displays should have a built-in PLC circuit switch to control the power load.

• Protective materials: The protective materials for outdoor LED displays should be fire-resistant and durable. They should not crack or age under different temperatures and rainy environments. They should prevent rain or moisture from penetrating into the screens and causing short circuits and fire accidents.

• Plastic protection kit: The plastic protection kit for LED modules should be made of flame-retardant PC glass fiber material. It should resist fire and various temperatures for a long time. It should not deform or embrittle. It should also be bonded with glue to prevent rainwater from entering the interior and causing short trouble and fire disaster

UL 94 is a plastics flammability standard released by the Underwriters Laboratories (USA). The standard classifies plastics according to how they burn in various orientations and part thicknesses from the lowest flame-retardant to the most flame-retardant in six different classifications.

Thermal and Ventilation Design

Outdoor LED displays generate a lot of heat, which can be dissipated by two common methods: fan or air conditioner. The choice depends on the maximum heat dissipation. Moreover, a scientific thermal balance design is important for the whole heat dissipation solution, which is sometimes neglected or underestimated. Thermal balance design aims to distribute the heat of the whole system evenly, so as to reduce the risk of fire disaster caused by excessive heat accumulation.

Fire-proof LED Display 

The impact of  led display working in Extreme Weather

Outdoor LED displays in cold climates face the problem of different thermal expansion coefficients and uneven changes in the physical dimensions of their materials, such as masks, PCBs, module kits, and cabinet frames

• Crack between module and module, cabinet and cabinet.
• The shrinkage and breakage of the led modules’housing kits and cabinet frame.
• The uneven shrinkage between the LED lamp and the mask, causing the LED lamp to loosen and display failure;
• The potential dangers of water intrusion caused by the shrinkage of the waterproof rubber ring of the cabinet in low temperature.
• The Power supply cease to work.
• the protective(PVC) layer of the cable is easily broken, which will cause serious problems such as short circuit or even fire.
  

Selection of Low Temperature Resistant Raw Materials.

Adopt low-temperature resistant raw materials and devices, such as cold-resistant masks and bottom shell kits, low-temperature resistant waterproof glue, low-temperature power supply(meanwell) (can be started in an environment of -40℃; -25℃); Adopt low-temperature resistant cabinets, low-temperature resistant electronic devices and connectors.

Extra high protection ability

As outdoor fixed LED display works in outdoor environment for a long time, the PCB, power supply, soldering joints, etc. have high requirements for high and low temperature resistance, water resistance and corrosion resistance ability. It is recommended to carry out the coating and cold-proof treatment for PCB, components and parts, solder joints, etc., to protect the circuits from damage under the environments containing chemical substances (such as: fuel, coolant, etc.), vibration, moisture, salt spray, humidity and high temperature, low temperature conditions, thereby prolonging their service life.

Strong LED cabinets

The use of low-temperature resistant LED Cabinets: when the temperature reaches minus thirty degrees or even lower, the box of the LED display will shrink and deform, which will cause the gap between the box and the box to become larger, and even cause the peer lamps are not in the same straight line.

Heating Devices

Installing heating devices or fans inside the cabinets to keep the temperature within a reasonable range.

Daily Maintenance in extrem cold weather.

To prevent damage to your led screen in very cold conditions, follow these tips:

• The best option is to keep your led screen on all the time
• If you can’t do that, at least use the stand-by mode when you are not using it
• If you have to turn it off and it doesn’t turn on easily, then you may need to heat up the led screen gently

VISIONPI Low Temperature resistant Outdoor led display

Low Temperature resistant COB LED Display

Our COB LED display, equipped with a patented three-layer surface treatment, is specifically designed for extreme cold weather resistance. The advanced Black Bottom Adhesive Layer enhances contrast without affecting brightness, while the Buffer Layer ensures exceptional durability and impact resistance in freezing conditions. Additionally, the Highly Transparent Top Layer provides superior surface protection, maintaining clarity and performance, making this display ideal for reliable operation in harsh, low-temperature environments.