| 摘要 |
PROBLEM TO BE SOLVED: To prevent a sealing structure from being released from the outer part of a board case, and also to release the sealing structure by heating without adversely affecting the board case and an electronic component mounted on a circuit board. SOLUTION: The board case 1 arranged in a game machine and storing a main board 2 includes the sealing structure for sealing a main body case 3 and a cover case 4 so as not to be opened from the outer part. The sealing structure includes: a locking rod 30 arranged inside the main body case 3; and a locking material 40 arranged inside the cover case 4 and locked by the locking rod 30 when the main body case 3 is fitted to the cover case 4. The locking material 40 is formed of a shape memory alloy. The shape of the locking material 40 whose shape is stored to recover at transformation temperature or more has the shape for releasing locking with the locking rod 30. COPYRIGHT: (C)2009,JPO&INPIT
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