The LED display is arranged from the matrix of the LED chip that can emit light. The voltage is low. The normal power supply power supply of the indoor display is 5V, the normal working voltage of the outdoor display is 5-9V, and the chip can be emitted after the chip is powered on. And the wavelength of each chip is fixed, the range of changes is narrow, and it does not produce light with radiation capacity. Therefore, the LED display will not have radiation.
If the outdoor LED display is radiated, the largest electromagnetic volume of the entire screen should be its transformer, which turns 220V into 12V. But now it is used for switching power. Generally, it is about 200W. It is distributed. It is no longer from it to 1m.