VESTIBULE SYSTEM

摘要

PURPOSE:To prevent the outside heat and the like from infiltrating into a house when a person goes in or out and receive delivered objects several times while the inhabitant of the house is absent. CONSTITUTION:An outer door 2 is provided on the outdoor side of a cylindrical vestibule main body 1, and an inner door 3 is provided on the indoor side openably respectively. The outer door 2 and the inner door 3 are not opened concurrently. The inner door 2 and the outer door 3 are not opened concurrently when a person goes in or out, thus outdoor heat or coldness is prevented from infiltrating into a house. The outer door 2 is locked so as to be unlocked with a simple action for home delivery. A home deliverer operates a control device to open the outer door 2 and puts a baggage in an inner space 6. He closes the outer door 2 after putting the baggage and going out.