Patent ID: 7016590

Claim:
Wiring device for optical fiber, the wiring device comprising: an optical plug receptacle including a plug receptacle main body which is mounted on a mounting opening opened in the outer surface of a building and a receptacle for optical fiber which is provided to the plug receptacle main body and has a plug connection hole facing the outside of the plug receptacle main body; a winder which fixes an optical fiber cable wired to the inside of a building and connected to the receptacle for optical fiber and on which the optical fiber cable is wound at a radius of curvature larger than the permitted minimum radius of curvature; and a retainer being provided on the plug receptacle main body to retain the winder in the inner side of the building, wherein the receptacle for optical fiber and the winder are arranged in parallel with each other in the front-back direction so that the core wire of the optical fiber cable is bent between the receptacle for optical fiber and the winder, are provided with expansion-preventing portions being in contact with the bent portion of the core wires so as to prevent that the bent portion is expanded in a direction away from the receptacle for optical fiber and the winder.