To arrange a large display part, while solving the following problem that the visibility of a control box inside a case is impeded when the large display part is arranged so that a large amount of different kinds of game information is largely displayed on the upper part of a slot machine, for example.

A prescribed space is formed between the control box 23 and a projected surface part. Projecting information from a display controller attached onto the rear surface of the case 6 is projected through the space. Thus, only a display screen 21, for example, is arranged in an upper panel part, and it is not necessary to arrange the display control part of a display inside the case at the rear side of the panel part, so that the display with a wide area is installed for a game without impeding visibility in the control box 23 which is attached to the inner part of the case.