TEMPERATURE MEASURING DEVICE

To accurately measure the temperature of a measurement target site and suppress damages due to heat of the measurement target site.SOLUTION: A temperature measuring device 1 includes: a cylindrical part 11 having an opening in one end, the opening facing a measurement target site; a temperature measurement unit 13 located in the cylindrical part 11 and in the other end of the cylindrical part 11, the temperature measurement unit measuring the temperature of the measurement target site on the basis of the intensity of radiation light that a sensor unit 25 for receiving radiation light from the measurement target site received; and an aperture 14 located between the temperature measurement unit 13 and the measurement target site, the aperture limiting the vision from the temperature measurement unit 13 more than the opening to mainly see the measurement target site.SELECTED DRAWING: Figure 2 【課題】計測対象部位の熱に起因した損傷を抑制するとともに、計測対象部位の温度を正確に計測することを目的とする。【解決手段】温度計測装置１は、一端に形成された開口が計測対象部位と面するように配置される筒部１１と、筒部１１の内部であって、かつ、筒部１１の他端に設けられ、計測対象部位からの放射光を受光するセンサ部２５が受光した放射光の強度に基づいて、計測対象部位の温度を計測する温度計測部１３と、温度計測部１３と計測対象部位との間に設けられ、温度計測部１３から見た視野を、主として計測対象部位を見るように開口よりも限定するアパーチャ１４と、を備えている。【選択図】図２