Questions that should be considered when purchasing an outdoor LED display:

1. The LED display screen may be subject to strong electromagnetic attacks caused by wind, rain and lightning.

2. The display screen has a wide audience, long viewing distance, wide requirements, and large changes in ambient light, especially when exposed to direct sunlight.

3. The main problems of outdoor LED screens are as follows: Because the outdoor display screens are installed outdoors, they are often exposed to wind and rain, sun and rain, and the working environment is harsh. Electronic equipment getting wet or severely damp or will cause short circuit or even fire, cause malfunction or even fire, and cause great losses.

4. The ambient temperature changes greatly. When the outdoor display screen works, it will generate a certain amount of heat. If the ambient temperature is too high and the heat dissipation is poor, the integrated circuit may not work properly or even be burned, making the display system unable to work normally.

In view of the above requirements, LED display manufacturers must:

1. In order to ensure close viewing in a strong environment, ultra-high-brightness light-emitting diodes must be used.

2. The display screen and the joint between the screen and the building must be strictly waterproof and leak-proof; the screen must have good drainage measures, and once the accumulation of water occurs, it can be discharged smoothly.

3. Install lightning protection devices on LED displays and buildings. The main body and the shell of the LED display screen are well grounded, and the grounding resistance is less than 3 ohms, so that the large current caused by thunder and lightning can be discharged in time.

4. Install ventilation equipment to cool down so that the internal temperature of the screen is between -10°C and -40°C. An axial flow fan is installed on the top of the back of the screen to dissipate heat.

5. Use industrial-grade integrated circuit chips with a working temperature between -40°C and 80°C to prevent the display from starting up due to low temperatures in winter.

6. The medium of the LED display should be a new type of wide viewing angle tube, which has a wide viewing angle, pure color, consistent coordination, and a life span of more than 100,000 hours. The outer packaging of the display medium is currently the most popular rectangular tube with a cover, sealed with silicone, and no metalized assembly; its appearance is exquisite and beautiful, sturdy and durable, and has protection from direct sunlight, dust, water, high temperature, and circuit short circuit" Features of "Five Preventions". The above is the relevant precautions for purchasing outdoor LED displays summarized by Liancheng Development.