What issues should be considered in the design and installation of outdoor LED large screens?

The main problems of outdoor screens are as follows:

(1) Display screens are installed outdoors and are often exposed to the sun, rain, wind and dust, and have a harsh working environment. Electronic equipment that is wet or severely damp can cause short circuits or even fires, leading to malfunctions or even fires, causing losses;

(2) The display screen may be attacked by strong electricity and strong magnetic fields caused by lightning;

(3) The ambient temperature changes greatly. The display screen will generate a certain amount of heat when it is working. If the ambient temperature is too high and the heat dissipation is poor, the integrated circuit may not work properly or even burn out, making the display system unable to work properly;

(4) The audience is wide, and the viewing distance and field of view are required to be long; the ambient light changes greatly, especially the possibility of being exposed to direct sunlight.

In view of the above special requirements, outdoor display screens must:

(1) The screen body and the joints between the screen body and the building must be strictly waterproof and leakproof; the screen body must have good drainage measures so that water can be discharged smoothly in case of accumulation;

(2) Install lightning protection devices on the display screen and buildings. The display screen body and shell should be well grounded, with a grounding resistance of less than 3 ohms, so that the large current caused by lightning can be discharged in time;

(3) Install ventilation equipment to cool down the screen so that the internal temperature is between -10℃ and 40℃. Install an axial fan on the upper back of the screen to discharge heat;

(4) Use industrial-grade integrated circuit chips with an operating temperature between -40°C and 80°C to prevent the display screen from failing to start due to low temperatures in winter;

(5) In order to ensure long-distance visibility under strong ambient light, ultra-high brightness LEDs must be used;

(6) The display medium uses a new wide-angle tube with a wide viewing angle, pure and consistent colors, and a service life of more than 100,000 hours. The outer package of the display medium is the most popular square cylinder with a shielding edge, silicone seal, and non-metallic assembly; its appearance is exquisite and beautiful, sturdy and durable, and has the "five protection" characteristics of anti-direct sunlight, dustproof, waterproof, high temperature, and circuit short circuit.