HEATING DEVICE

A heating device for off-vehicle information acquisition means, which has high heating efficiency, which is thin, and which has a high degree of freedom for layout of a heating element is provided. A heating device (), which is arranged inside a vehicle, heats a window glass portion (Wa) located in an information acquisition path () of an off-vehicle information acquisition means () for acquiring information outside the vehicle. The heating device () comprises a hood () provided inside the vehicle below the information acquisition path () of the off-vehicle information acquisition means () and a heating element () provided on the surface of the hood () or inside the hood () and having a PTC heater layer ().