Heating device suitable for terminal box

The utility model discloses a heating device. The heating device includes an electric heating plate, the electric heating plate is in a square, prismatic, oval or another irregular shape, the middle of the electric heating plate is provided with a groove, the groove is internally provided with a heating wire, and the heating wire is connected with a lead used for being connected with a power supply to perform heating; and a board of the electric heating plate, which is away from the groove, is provided with a plurality of cooling fins integral with the electric heating plate, gaps are arranged among the cooling fins, and the cooling fins are through from top to bottom. When the heating device provided by the utility model is used for a terminal box, heat emitted by the electric heating plate disperses rapidly, thereby improving dehumidification and heat preservation efficiency, greatly improving working environment of a temperature and humidity controller inside the terminal box, effectively prolonging the service life of the temperature and humidity controller, and guaranteeing safe and stable operation of a power grid.