| 摘要 |
PROBLEM TO BE SOLVED: To provide a security door having a pocket window through which a pizza, a piece of mail, or the like can be received while the door is tied with an entrance door chain.SOLUTION: A pocket window formed with such a width that a large size pizza having a horizontally long shape can be received through while keeping the horizontal position and with such an approximate height that the human head cannot pass through is arranged approximately above a door knob 6 of an entrance door. A pocket window door 7 which corresponds to the size of the pocket window is arranged inside the pocket window. The pocket window door 7 is fixed at the lower side in the horizontally long position, attached in such a manner that the pocket window door 7 can be opened inward up to the angle of 90 degrees, and formed to extend beyond the lateral width of the pocket window toward the door knob 6 such that the pocket window door 7 sufficiently covers the door knob 6 from above when the pocket window door 7 is fully opened and the plate surface of the pocket window door 7 becomes horizontal.SELECTED DRAWING: Figure 4 |
