Waterproof structure of large outdoor LED display screen

The utility model discloses a large outdoor LED display screen waterproof structure which comprises a display screen frame, two isolation plates are fixedly arranged on the inner wall of the display screen frame, and an installation chamber, a first sealing chamber and a second sealing chamber are arranged on the inner wall of the display screen frame through the isolation plates respectively. The first sealing chamber and the second sealing chamber are arranged on the two sides of the installation chamber respectively. The LED assembled display module is fixed in the first sealing chamber on the display screen frame through the fixing holes, rainwater can be blocked outside the display screen frame, advertisement tarpaulin wound on the outer wall of the first winding roller can be unfolded and blocked outside the LED assembled display module through the first winding roller and the second winding roller which rotate, and the advertisement tarpaulin can be effectively prevented from falling off. The LED assem