PURPOSE: To select a purchase commodity by forming a housing space having a front surface opening in a window, and housing a display surface in the housing space so as to turn toward the side.

CONSTITUTION: A display body 44 whose display surface is turned toward the side through this front surface opening is housed in a housing space 42 formed between transparent plates 7 by removing a cover 43. Then, since the display body 44 is supported with a side wall 5 of a case 1, the display body 44 can be supported with the case 1 by a display body support device 45. Since a cover 40 where the housing space 42 blocked up by being surrounded with the side wall and plywood 41 and by being covered with a cover 43 is formed inside is high in heat insulating performance, heat insulating performance of the case 1 can be heightened, and dew can be made unsticky even if outside high temperature and highly humid air of the case 1 touches an outside surface of the cover 40. Thereby, the display surface of the display body 44 can be always made easy to see through the undewed cover 40 for a customer trying to select and purchase a commodity in the case 1 while looking at it through a window 6 from the oblique front or the side of the case 1.