An induction heating cooker, comprising: a body that structures an outer casing; a top plate that covers a top portion of the body; a heating coil that is placed below the top plate, the heating coil heating a cooking vessel placed on the top plate; an infrared sensor that is disposed inside a casing having a plurality of airflow vents (35a, 35b), wherein the casing is disposed lower than the heating coil, the infrared sensor sensing infrared radiation radiated from the cooking vessel; a control circuit that is placed lower than the heating coil, the control circuit controlling an output of a high frequency current that energizes the heating coil based on an output of the infrared sensor; an air blower that is placed lower than the heating coil, the air blower producing cooling air; and a duct that forms a cooling air path guiding the cooling air to the control circuit, through the plurality of airflow vents (35a, 35b), and to the infrared sensor, characterized in that: the duct is a tubular duct that is connected to an outlet of the cooling air of the air blower; the casing and the control circuit are placed at least partially inside the duct; and a heat dissipating plate disposed below the heating coil and above the duct to partition a space on a side of the heating coil, and a space on a side of the duct, the infrared sensor, and the control circuit, said heat dissipating plate being disposed below ferrite elements and the heat dissipating plate being biased upwards by springs, placed at the bottom portion of the body, wherein a bottom surface of the heat dissipating plate abuts a top surface of the duct, and wherein at least part of a surface of the heat dissipating plate is exposed to the space inside the body to facilitate dissipating heat transferred from the heating coil or the cooking vessel toward the space inside the body. a body that structures an outer casing; a top plate that covers a top portion of the body; a heating coil that is placed below the top plate, the heating coil heating a cooking vessel placed on the top plate; an infrared sensor that is disposed inside a casing having a plurality of airflow vents (35a, 35b), wherein the casing is disposed lower than the heating coil, the infrared sensor sensing infrared radiation radiated from the cooking vessel; a control circuit that is placed lower than the heating coil, the control circuit controlling an output of a high frequency current that energizes the heating coil based on an output of the infrared sensor; an air blower that is placed lower than the heating coil, the air blower producing cooling air; and a duct that forms a cooling air path guiding the cooling air to the control circuit, through the plurality of airflow vents (35a, 35b), and to the infrared sensor, characterized in that: the duct is a tubular duct that is connected to an outlet of the cooling air of the air blower; the casing and the control circuit are placed at least partially inside the duct; and a heat dissipating plate disposed below the heating coil and above the duct to partition a space on a side of the heating coil, and a space on a side of the duct, the infrared sensor, and the control circuit, said heat dissipating plate being disposed below ferrite elements and the heat dissipating plate being biased upwards by springs, placed at the bottom portion of the body, wherein a bottom surface of the heat dissipating plate abuts a top surface of the duct, and wherein at least part of a surface of the heat dissipating plate is exposed to the space inside the body to facilitate dissipating heat transferred from the heating coil or the cooking vessel toward the space inside the body. the duct is a tubular duct that is connected to an outlet of the cooling air of the air blower; the casing and the control circuit are placed at least partially inside the duct; and a heat dissipating plate disposed below the heating coil and above the duct to partition a space on a side of the heating coil, and a space on a side of the duct, the infrared sensor, and the control circuit, said heat dissipating plate being disposed below ferrite elements and the heat dissipating plate being biased upwards by springs, placed at the bottom portion of the body, wherein a bottom surface of the heat dissipating plate abuts a top surface of the duct, and wherein at least part of a surface of the heat dissipating plate is exposed to the space inside the body to facilitate dissipating heat transferred from the heating coil or the cooking vessel toward the space inside the body.