COMFORTABLE TEMPERATURE CONTROL DEVICE UTILIZING HEAT FLUX SENSOR

A comfortable temperature control apparatus used for a vehicle is provided with a temperature-change element (20) that changes a temperature thereof by being energized; a heat flux sensor (10) outputting a sensor signal corresponding to a heat flux; a heat diffusion layer (40) disposed on the heat flux sensor (10); and a control unit (2) that energizes the temperature-change element so as to adjust the temperature of the temperature-change element (20). In a seat (200) provided in a vehicle cabin of a vehicle, a cover surface (201a) side in contact a passenger being seated, the heat diffusion layer, the heat flux sensor and the temperature-change element are arranged in this order. The heat flux sensor outputs the sensor signal to the control unit, the sensor signal corresponding to the heat flux between the cover surface and the temperature-change element. The control unit adjusts an energization of the temperature-change element, based on the sensor signal outputted by the heat flux sensor, such that the heat flux between the cover surface and the temperature-change element is a predetermined value.