| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilation device capable of continuing ventilation to prevent fog from entering into a room even in an air state where fog occurs in nighttime.SOLUTION: A ventilation device includes: a duct 6 communicating the outside and inside of a room; an air supply blower 5 introducing air from the outside to the inside; and a hood 1 linked to the outside side of the duct 6, and having an opening part formed below. The hood 1 includes a plurality of nets 2 in an air channel of air introduced from the outside to the inside by the air supply blower 5.SELECTED DRAWING: Figure 1 |
