Ultrasonic endoscope

An ultrasonic endoscope comprising:

• a laminated body that comprises
• an ultrasonic transducer array in which a plurality of ultrasonic transducers are arranged, and
• a backing material layer that is disposed on a back surface side of the plurality of ultrasonic transducers;
• a wiring board that comprises a plurality of electrode pads each of which is electrically connected to a corresponding one of the plurality of ultrasonic transducers of the ultrasonic transducer array;
• a plurality of shield cables that comprise
• a plurality of signal wires each of which is electrically connected to a corresponding one of the plurality of ultrasonic transducers, and
• shield members for the plurality of signal wires;
• a wiring portion that comprises a plurality of connection portions at each which a corresponding one of the plurality of signal wires of the plurality of shield cables is electrically connected to a corresponding one of the plurality of electrode pads of the wiring board;
• a ground portion that is electrically connected to the shield members of the shield cables and that has heat conductivity;
• and
• a first heat conductive member that is disposed on a side surface of the laminated body that comprises the ultrasonic transducer array and the backing material layer, that extends beyond the backing material layer to a side opposite to the ultrasonic transducer array with respect to the backing material layer, and that is thermally connected to the ground portion.