| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a ventilation device capable of safely and securely replacing a relatively large and heavy filter. <P>SOLUTION: The ventilation device includes a pressure fan unit 14 mounted to an opening 11 of a wall W for separating inside and outside of a building, and a duct 12 connected to the unit 1. The upstream side of the duct 12 is made to pass through a lower side of a corridor S which is a stage installed on the upper side of an indoor space and permitting access, and the suction port side end of the duct 12 is protruded over an outer edge Se of the corridor S. A filter mounting part 17 including a pair of guide rails 21 opposing to each other while sandwiching a passage within the duct 12 and extended along the outer edge Se of the corridor S near the outer edge Se is formed in a duct portion 16 positioned immediately below the outer edge Se of the corridor S. The filter 18 is made to enter/leave from a filter attachment/detachment opening 20 of a duct top plate 12a while hung from the corridor S by a hanging wire 25 with both sides of the filter 18 positioned along the guide rails 21 and is attached/detached to/from the filter mounting part 17. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
