CRIME PREVENTIVE CONFIRMATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a crime preventive confirmation device allowing the sure confirmation of the locking state of a window from a remote place while realizing a low cost by simplifying the structure or manufacturing process. SOLUTION: A first light emitting element 9 and a first light receiving element 11 are provided on the upper part 1A of a window frame 1 corresponding to the inner meeting rails 6 of an inner sash 2 provided with a crescent 4. A first reflector 17 rotated in interlocking with the handle 5 of the crescent 4 to reflect an incident light A emitted from the first light emitting element 9 in the locked state of the crescent 4 so that it can be detected by the first light receiving element 11 is provided within the inner meeting rails 6 of the inner sash 2, and translucent pipes 13 and 14 for passing the incident light A emitted from the first light emitting element 9 and the reflected light B reflected by the first reflector 17 and received by the first light receiving element 11 are further provided within the inner meeting rails 6 of the inner wash 2. The translucent pipes 13 and 14 are integrally formed with the inner meeting rails 6 of the inner sash 2, whereby the structure and manufacturing process can be simplified to realize the low cost.