PROTECTIVE DEVICE OF CYLINDER LOCK

摘要

PROBLEM TO BE SOLVED: To provide a protective device of a cylinder lock capable of improving operability when inserting an ignition key by irradiating a key hole with light by light emission means, and capable of improving a degree of freedom of a layout of a shutter and the light emission means with respect to a housing.SOLUTION: A shutter 2 and light emission means 10 are formed on a case part 1a constituting a housing 1, and a clearance (t) capable of passing the light is formed between the shutter 2 and the case part 1a in an irradiation range α of the light applied to the key hole Ra from the light emission means 10.