PURPOSE: To allow the reuse of a card read writer and its control device from an old machine to a new machine at the time of exchanging pachinko game machines by mounting the card inserting part of a card type ball lending device on the front surface of an outer frame and its control part on the back surface of the outer frame.

CONSTITUTION: The card inserting part 5a of a card type ball lending device and its control part are mounted onto the front surface of an outer frame 14 and the back surface of the outer frame 14, respectively. Thus, at the time of exchanging pachinko game machines, exchanging work for connecting the outer frame of an old machine with the front frame of a new one through a hinge can be performed, and the card read writer and its control device integrated into the old machine can be reused as it is.