一種PTC加熱裝置,可廣泛地用作各種電器(如電子驅蚊器,電子罐等)的熱源. One kind of PTC heating device can be widely used for various electrical appliances (such as electronic insect repellent, electronic cans, etc.) of heat. 該PTC加熱裝置包括一個瓷盒,瓷盒中放入一個電極結構件,該電極結構件由上,下表面都有電極的PTC加熱元件和二塊電極板組成,該PTC加熱裝置還包括一塊散熱板,該板通過絕緣板置于電極結構件之上,散熱板的凸緣上有一些固定爪,可靠地將散熱板和瓷盒固定在一起,并保證固定爪和接線端之間有足夠的絕緣距離. The PTC heating device comprises a ceramic box, placed in a porcelain box electrode structure, the electrode structure by the upper and lower surfaces has a PTC heating element and a second electrode composed of the electrode plates, the PTC heating device further comprises a heat sink plate which is placed above the electrode plate through the insulating structural member, there are a number of fixed jaws on the flange of the heat radiating plate, the heat radiating plate and securely fixed together ceramic cartridge, and to ensure that there is sufficient between the fixed jaw and terminal insulation distance. 上電極板上有一狹窄段,過流時會熔斷. The electrode plate with a narrow segment, will fuse overcurrent.