Heater device

A heater device having a heater surface facing one side in a predetermined direction and configured to radiate heat from the heater surface, the heater device comprising:

• a transmission electrode and a reception electrode arranged on the other side in the predetermined direction with respect to the heater surface;
• an insulation coating layer that covers the transmission electrode and the reception electrode on the one side in the predetermined direction with respect to the transmission electrode and the reception electrode;
• and
• a substrate having a surface facing toward the heater surface, the transmission electrode and the reception electrode being disposed on the surface of the substrate, wherein
• the transmission electrode and the reception electrode are electrically connected to a contact detection unit that is configured to detect a contact or a proximity of an object to the heater surface by a change in a capacitance between the transmission electrode and the reception electrode,
• the insulation coating layer has a first component part made of an insulating member having an electrical insulating property, and a second component part having a relative permittivity smaller than a relative permittivity of the first component part, and
• the second component part is located between the heater surface and at least one of the transmission electrode or the reception electrode.