A radiant heater device is provided with: a heater main body (10) that comprises a heat generation unit (11) that generates heat by conducting electricity and that radiates radiant heat using heat that is supplied from the heat generation unit; an output control unit (30) that controls the output of the heat generation unit; and a maximum output determination unit (31) that determines an upper limit value for the output of the heat generation unit in accordance with the heat load around the heater main body. The output control unit controls the output of the heat generation unit in accordance with the heat load so that the upper limit value for output that is determined by the maximum output determination unit is not surpassed.
