PURPOSE: To enable a flat plate-like displayer, on which advertisements and prices of articles displayed in a case are displayed, to be supported within the case with the front surface of the displayer oriented forward by utilizing supporters for supporting the upper and the lower ends respectively of a rectangular plate-like mirror body provided at the depth in the case.

CONSTITUTION: A sandwiching mechanism 47 having, as its components, a pair of opposing surfaces 46 which are juxtaposed up and down, formed to project forward from the supporters 41, facing respectively the upper and the lower end surfaces 46 of the displayer 26 to face each other, and laterally extending, for sandwiching detachably the flexible and laterally long displayer 26 from both the upper and the lower sides, is provided at the supporters 41.