| 摘要 |
PROBLEM TO BE SOLVED: To provide an opening/closing device having a standing portion capable of impressing a customer with an advertising purpose for a commodity or the like. SOLUTION: An opening/closing portion 2 is largely opened so that an opening angle 6 becomes substantially 180 degrees, a standing portion 7 is provided in a standing state, and a rotary portion 14 is disposed at a position where its angle folding line 17 is perpendicular to a folding line 5 so that a print of a front surface of the portion 14 can be visually recognized from a predetermined view point. In order to visually recognize the print on the surface of the portion 14, it is necessary to set the angle 6 of the portion 2 to substantially 180 degrees, thereby impressing an advertising purpose for a commodity or the like to a customer.
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