Importance

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Abstract

An upper portion of a case body (1) of a radiant-temperature clinical thermometer is integrally formed to include a supporting frame (11) to which a supporting cylinder (2) is secured horizontally. The tip of the supporting cylinder (2) projects outwardly and a radiant-temperature sensor (3) for sensing heat rays from the external ear is secured to the end face of the tip. A cylindrical probe (4) is supported on the supporting cylinder (2) so as to be free to slide, and the cylindrical probe (4) is biased by a coil spring (42) in a direction that thrusts the probe outwardly. A flange (41) on the base end of the cylindrical probe (4) abuts against a stopper (12) of the supporting frame (11), whereby the extended position of the cylindrical probe (4) is determined. A cover ( 9 ) is attached to the tip portion of the cylindrical probe (4). When the tip portion of the cylindrical probe (4) is inserted slightly into the orifice of the ear and pressed, the cylindrical probe (4) retracts and a lever (51) of a microswitch (5), which is attached to the supporting frame (11), is pressed by the flange (41) of the cylindrical probe (4). The switch (5) produces an ON signal as a result. The ON signal is applied as a measurement-start trigger signal to a temperature measuring circuit provided within the case body (1). Thus, the timing at which temperature measurement starts is always fixed so as to reduce a variance in measured temperature.

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First Claim