ULTRASONIC WAVE-GENERATING DEVICE

摘要

Provided is an ultrasonic wave-generating device capable of outputting ultrasonic waves having high sound pressure. The ultrasonic wave-generating device (100) in the present invention is provided with: a frame (2), the center of which has a through-hole (2a) formed therein; a plate-shaped first transducer (3) joined to one principal surface of the frame (2), and a plate-shaped second transducer (4) joined to the other principal surface of the frame (2); an ultrasonic wave-generating element (1) for outputting ultrasonic waves in a buckling tuning fork vibration mode in a manner such that the first transducer (3) and the second transducer (4) transduce in opposite phases from one another; and a first acoustic path (S1) that is formed on at least one side of the two principal surfaces of the ultrasonic wave-generating element (1), compresses the ultrasonic waves outputted by the ultrasonic wave-generating element (1), and transmits the ultrasonic waves in a direction along the principal surfaces of the ultrasonic wave-generating element (1).