| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved heat radiation structure of an ultrasonic probe. SOLUTION: An inner shell 14 is cylindrically formed on the whole, and an electronic circuit 30 is housed inside the cylindrical form, and an oscillator 12 is also housed in the inner shell with the oscillator face side exposed. An outer shell 16 is cylindrically formed on the whole in such a way as to surround the inner shell 14. A fan 18 for circulating air is disposed between the inner shell 14 and the outer shell 16. The fan 18 is attached to a rotating shaft 36. According to the rotation of a motor 32, the rotating shaft 36 is rotated via a gear 34 and the fan 18 is rotated. When the fan 18 is rotated, air is taken from an air intake 42 in the front and discharged from an air outlet 44 in the rear. In this way, air is circulated between the inner shell 14 and the outer shell 16, and heat generated inside a probe head 10 is radiated. Specifically, heat generated in the electronic circuit 30 and in the oscillator 12 is radiated. COPYRIGHT: (C)2009,JPO&INPIT
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