The toxins in the haze not only seriously endanger people's health, but also have a great impact on the operation of outdoor LED displays. In fact, we can distinguish fog and haze into fog and haze, because the main hazards of the two to the LED display are not the same:

1. The hazards of fog to outdoor LED displays: Fog is formed by condensation of water vapor in the air. That is to say, the humidity in the air is relatively high, which will cause the LED display to be damp. Excessive humidity will cause the PCB board, power supply, power cord and other components of the LED display to be easily oxidized and corroded, and even short-circuit, which will cause malfunction.

　　 2. The harm of haze to outdoor LED displays: Haze is a collection of dust and various tiny particles suspended in the air, among which the dust particles suspended in the air are the core material of the haze. If under the influence of haze for a long time, all kinds of fine dust in the air will enter the equipment through the ventilation holes, which will accelerate the wear and even damage to the fans and other equipment. The dust will also fall on the surface of the internal control device of the LED display, which not only reduces The heat dissipation and insulation performance of the display will also accelerate the aging of the LED display and affect the normal service life.

　　 Then, how to make the LED display screen can withstand the test in the haze weather for a long time, which requires users and engineers to pay more attention to the purchase and maintenance:

　　1. First of all, during the purchase process, the user must see whether the display screen reaches the dustproof level required by the use environment. In terms of dust prevention, the international standard is IP0X-IP6X, which is a design level to prevent foreign matter intrusion. If installed in northern areas where there are more sand, dust and haze, its front and back protection levels must reach IP65. That is to say, a completely dust-proof structure must be adopted, that is, it is airtight under the state of spraying water.

2. Be sure to pay attention to whether the PCB board of the LED display has been treated with anti-corrosion, such as coating the surface with three anti-paints, etc.; whether the power supply and power cord are selected from high-quality accessories; and check the welding place of the screen that is most likely to be corroded. Has done anti-rust treatment.

　　3. In the daily maintenance process, we must regularly remove dust to avoid damp weather, dust absorbing moisture in the air and causing short circuits, which may lead to mildew on PCB boards and electronic components.