1. Direct lightning protection: When outdoor LED display screens are not within the direct lightning protection range of nearby high-rise buildings, lightning rods should be installed on the top of the display screen or near the steel structure;
2. Induction lightning protection: The outdoor LED display power supply system is equipped with level 1-2 power supply lightning protection, and the signal line is installed with signal lightning protection. The power supply system in the computer room is equipped with level 3 lightning protection, and the signal input/output equipment is equipped with signal lightning protection terminals;
3. All LED display circuits (power and signal) should be shielded and buried.
4. The grounding system between the front end of the outdoor LED display screen and the room should meet the system requirements. In general, the grounding resistance of the front end should be less than or equal to 4 ohms, and the grounding resistance of the room should be less than or equal to 1 ohm.