To permit confirming a suitably inserted and connected state of a connector to a connector receiver and prevent the connector inserted and connected to the connector receiver from being removed.
Fitting ports 35, 36 capable of facing connector receivers 15, 17 of a board 10 received and protected on an outside are provided at prescribed positions of a board case 25. Holding means 40, 45 having engaging claw portions 42, 47 projecting on the side of the fitting ports 35, 36 are provided adjacently to the fitting ports 35, 36. When connectors 16, 18 are suitably inserted and connected to the connector receivers 15, 17 facing outside through the fitting ports 35, 36, the engaging claw portions 42, 47 of the holding means 40, 45 engage with engaging receivers 50, 51 provided at the connectors 16, 18, thereby permitting confirming a suitably inserted and connected state of the connectors 16, 18 to the connector receivers 15, 17 and preventing the connectors 16, 18 from being removed from the connector receivers 15, 17.
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MIZUKAI NOBUAKI
HAJI MASAKI
