Heater control device

A heater control device includes a camera sensor configured to capture an image of an outside of a vehicle through an image capturing transparent region of a window glass, and a camera heater configured to heat the image capturing transparent region. The heater control device is configured to: apply, to a correlation which is set in advance between an outside temperature, a vehicle speed, and energization electric power, and a temperature of the image capturing transparent region corresponding to the outside temperature, the vehicle speed, and the energization electric power, the outside temperature at a current time, the vehicle speed at the current time, and a target temperature equal to or higher than a dew-point temperature, to thereby determine defogging electric power so that the temperature of the image capturing transparent region is prevented from falling below the dew-point temperature.