Patent ID: 7458482

Claim:
A protective cover placed on a side wall of a casing and covering a hollow part in which an output part of an apparatus housed in the casing is provided, comprising: an outer lid supported by an hinge provided at an upper end of the hollow part to be openable and closable in an up-and-down direction, and provided, at a part close to a lower end, with a first locking member engaging with a catching member that is provided at a lower part of the hollow part; and an internal lid rotatablv mounted to a position corresponding to the output part in an inner surface of said outer lid to cover the output part, with its upper end rotatably supported by a hinge, the first locking member in said outer lid including a hook locked at the catching member, a spring biasing the hook to be locked and held at the catching member, and an operation member which releases the biasing by the spring, said internal lid having a second locking member which is locked at an inner surface of said outer lid at a position close to the lower end, and the first locking member being released with release of locking of the second locking member by an operation of the operation lever.