The present invention is directed to reliably prevent a trouble that a battery is loaded either in a state where a ribbon is entirely housed in a battery housing or without a ribbon by a simple method using a ribbon. Guide parts (83, 84) are provided on both side walls (57, 58) of a battery housing (53). A ribbon (81) is set so as to cross the battery housing (53) in a stretched state by the guide parts (83, 84) in a position where the battery can be taken out by drawing the ribbon (81). With the configuration, at the time of loading a battery, by making the ribbon (81) extend outside, the ribbon (81) is not entirely housed in the battery housing (53) or absence of the ribbon (81) in the battery housing (53) can be prevented. By making the battery front end face come into contact with the stretched ribbon (81) and inserting a battery, a normal loading state in which the ribbon (81) is pushed to the deepest place can be assured. The battery ejecting function with a simple ribbon (81) can be reliably displayed.
