A speaker for head mounted device

The utility model discloses a loudspeaker used for a head-mounted device. The loudspeaker comprises a shell, a cover body and a loudspeaker body, a mounting chamber is welded to the middle of the interior of the shell. The interior of the outer wall of the mounting chamber is hollow and is in a vacuum state; two fixing pieces are arranged in the middle of the interior of the mounting chamber; a loudspeaker body is arranged in the middle of the two fixing pieces; connecting rods are welded to the side faces of the fixing pieces correspondingly, a first lantern ring and a second lantern ring arewelded to the bottoms of the connecting rods correspondingly, a moving mechanism is arranged on the first lantern ring and the second lantern ring, a heat dissipation mechanism is arranged in the shell, a cover body is arranged on the side face of the shell, and a fixing mechanism is arranged between the shell and the cover body. The loudspeaker is convenient and fast to install and detach, the loudspeaker body is conven