PROBLEM TO BE SOLVED: To provide an infrared radiation thermometer that is used by inserting a probe to the external auditory canal, wherein a body temperature is measured continuously and accurately.SOLUTION: A probe 5 of an infrared radiation thermometer includes a temperature difference sensor, a light guiding member 18 that is provided on a measuring surface 17a side of the temperature difference sensor and is inserted to the external auditory canal, a light guiding member-side heating body 20 that heats the light guiding member 18, a light guiding member-temperature sensor 22 that measures the temperature of the light guiding member 18, and a temperature difference sensor-temperature sensor 23 that measures the temperature of other portions of the temperature difference sensor than the measuring surface 17a.COPYRIGHT: (C)2014,JPO&INPIT【課題】外耳道にプローブを挿入して使用する赤外放射温度計において、継続的にかつ高精度に体温を測定すること。【解決手段】赤外放射温度計のプローブ5を温度差センサと、前記温度差センサの測定面17a側に設けられ、外耳道に挿入される導光部材18と、導光部材18を加熱する導光部材側発熱体20と、導光部材18の温度を測定する導光部材温度センサ22と、前記温度差センサの測定面17a以外の部分の温度を測定する温度差センサ温度センサ23と、を有するものとする。【選択図】図4
