| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that the opening of a body frame is essential for recognizing a fraud done to a board box, however, the body frame is less frequently opened in regular work in parlors and the fraud cannot be found before the body frame opening work. SOLUTION: An opening part sealing structure 133 of the board box 130 is formed visible via an opening part 150, so that a parlor worker can view the opening part sealing structure 133 through the opening part 150 by opening a glass door frame 60 and recognize the sealing structure. This constitution enable the worker to check the fraud done to the board box 130 while doing various types of work by opening the glass door frame 60 and promptly find the fraud done to the board box 130 which may be done even during the business hours. COPYRIGHT: (C)2008,JPO&INPIT
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