Vehicle-mounted external sound amplification device based on Internet of Things

The utility model relates to the vehicle-mounted field, in particular to a vehicle-mounted external sound amplifying device based on the internet of things, which comprises a loudspeaker, grooves and a dustproof pad, the inner wall of the loudspeaker is provided with a plurality of grooves, the inner wall of each groove is movably connected with one side of a lug plate, the other side of each lug plate is fixedly connected to the outer side of the dustproof pad, and the dustproof pad is fixedly connected with the loudspeaker. One side of the lug plate is connected with the side edge of a clamping groove sleeve in an attached mode, the clamping groove sleeve is connected to the interior of the groove in a clamped mode, the inner wall of the loudspeaker is connected with the dustproof pad in a clamped mode, a plurality of bolts are arranged outside the loudspeaker, one end of each bolt penetrates through the outer wall of the loudspeaker to be in threaded connection with the lug plate, and the other end of each