| 摘要 |
A board is easily and securely mounted on a panel. Projecting parts are formed on the panel, and arc open grooves which are inserted onto the projecting parts are formed in a bulb board. The open grooves of the bulb board each are inserted onto the projecting parts, then the bulb board is turned within the surface of the panel to lock the bulb board to the panel by bringing the bottom surfaces of the bent parts formed at the ends of the projecting parts into contact with the surface of the bulb board. A stopper rib is formed on the panel to prevent the bulb board from turning backward, thereby preventing the board from being separated from the panel.
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