| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an attic ventilation system capable of reducing the temperature of an attic regardless of a new building or an existing building. Ž<P>SOLUTION: To efficiently discharge heated air in the attic and prevent thermal conduction, the attic is divided into two of a primary air layer 8 and a secondary air layer 9 by a heat insulating material 1, and heated and accumulated air in a ridge of the primary air layer with reduced volume is drawn out through an intake duct by a ventilation fan 2 and discharged to the outside. At this time, since air is sucked to the ventilation fan, fresh air is made to enter from a surrounding suction hole to reduce the temperature of the attic. Thus, the temperature of the lower secondary air layer divided by the heat insulating material is further lowered. As a result, in the attic ventilation system, almost no radiant heat is generated to a room. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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