| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inspection opening apparatus for an air conditioning duct and the like, permitting easily confirming (looking at) the contamination state inside the air conditioning duct through a cylindrical body communicated to the air conditioning duct. <P>SOLUTION: This inspection opening apparatus 3 for the air conditioning duct and the like is installed between a ceiling plate 1 and the air conditioning duct 2 arranged on the rear surface of the ceiling plate 1 and comprises the cylindrical body 4 with one end communicated to a part of the air conditioning duct 2 and the other end opened 4a together with the ceiling plate 1. A plug member 5 for closing the opening 4a part is removably fit on the opening 4a part on the ceiling plate 1 side of the cylindrical body 3, a communication part 8 permitting communication between inside of the cylindrical body and outside of it is formed on the plug member 5, and a filter member 9 is placed on the inner part corresponding to the communication part 8 of the plug member 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
