LED intelligent conference screen based on COB packaging

The utility model relates to the technical field of conference screens, in particular to an LED intelligent conference screen based on COB packaging, which is characterized in that after the conference screen is used, the conference screen enters the interior of a shell through the contraction of a plurality of groups of electric push rods, and then two groups of sliding doors are pulled and closed, so that dust falling on the conference screen is reduced, and the service life of the conference screen is prolonged. Then an exhaust pump is turned on to exhaust air into an exhaust pipe, the air is exhausted through multiple sets of nozzles at the rear end of the exhaust pipe, meanwhile, two sets of driving motors are turned on, two sets of sliding blocks move leftwards through transmission of two sets of lead screws, the air is sprayed to the front end of the conference screen through the multiple sets of nozzles, and particles at the front end of the conference screen are blown off; the front end of the confer