A plasma display device is provided with a chassis supporting a PDP on its front surface, circuit boards located within a specific region of the back surface of the chassis, a back cover including an edge portion covering the outside of the specific region of the back surface of the chassis and a projecting portion accommodating the plurality of the circuit boards, and a fan arranged inside a space defined by the projecting portion. The peripheral wall of the projecting portion is provided with a plurality of air inlets and a plurality of air outlets.