Title:
防火扉
Document Type and Number:
Japanese Patent JP5565702
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to suppress temperature rise of non-fire side surface by making heat of a fire side surface hardly transfer to the non-fire side surface.SOLUTION: A fire door 1 has a door body 3 openably/closably arranged in a door frame 2 and having an inner hollow part R liquid-tightly surrounded by a plate-like member, a reflecting film 4 arranged along the inside face of the door body 3, and two sheets of reflecting plates 5A, 5B arranged parallel to the door feces in the inner hollow part R, the inner hollow part R of the door body 3 is constituted such that vacuum condition such as high vacuum is maintained, thereby heat transfer from the fire side surface 3a to the non-fire side surface 3b through the fire door 1 is suppressed, consequently the temperature rise of the non-fire side surface 3b is suppressed.
Inventors:
Masayuki Hirota
Application Number:
JP2010231567A
Publication Date:
August 06, 2014
Filing Date:
October 14, 2010
Export Citation:
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
A62C2/06; E06B5/16
Domestic Patent References:
| JP2005120804A | ||||
| JP7011687U | ||||
| JP6200676A | ||||
| JP9268852A | ||||
| JP56146735U | ||||
| JP7293127A |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Yoshifumi Saeki
Tadashi Takahashi
Takashi Watanabe
Yoshifumi Saeki