A plasma display device includes a radiation wave blocking structure for preventing discharged heat, generated inevitably as a result of discharge, from being emitted into the surrounding environment, thereby reducing discomfort normally experienced by users of plasma display devices due to the discharged heat. The plasma display device includes a plasma display panel (PDP) for realizing an image formed due to a discharge, and a heat prevention layer disposed on a side of an image display surface of the PDP. The heat prevention may be included in a directly attached filter or a glass filter, each of which includes a reflection prevention layer or an anti-glare layer, and an electromagnetic wave shielding layer.