An electronic radial type ultrasonic transducer arraying, in a cylindrical form, a plurality of ultrasonic transducer elements for transmitting and receiving ultrasound, and for internally storing cables corresponding to the respective ultrasonic transducer elements for transmitting a drive signal for driving each of the ultrasonic transducer elements, featuring a conductive film on a surface of an insulator through which the cable group is led, and also comprising an acoustic lens constituted of a lens part which is connected to a ground wire and featured as a convex form and a cover part covering an easily breakable part or conductor material which is electrically connected to a plurality of ultrasonic transducers.
