Patent ID: 8714666

Claim:
A casing in which a module substrate is to be enclosed, wherein the casing comprising: a rail portion configured to receive and slidably support the module substrate; at least one shutter portion provided so as to open and close an opening for ventilation; a pin portion provided in the rail portion and configured to contact with an edge of the module substrate while the module substrate is supported by the rail portion; and a link mechanism that allows the shutter portion to move in accordance with the moving distance of the pin portion, the link mechanism including a lever portion that swings about a rotational shaft secured to the casing; a connector portion that links a first end of the lever portion to the pin portion, and rotates the lever portion in accordance with the moving distance of the pin portion; and a drive portion that links a second end of the lever portion to the shutter portion, and drives the shutter portion in accordance with the amount of rotation of the lever portion.