| 摘要 |
PROBLEM TO BE SOLVED: To eliminate deviation of ventilation quantity passing a deodorizing filter 28, and secure a deodorizing function. SOLUTION: In sending air from either one opened introducing port of an outside air introducing port 18 and an inside air introducing port 19 through the deodorizing filter 28, an upstream side surface of the deodorizing filter 28 to air is formed as a flat or dented surface to an air flow from the opened introducing port. In a semi-deodorizing state where the deodorizing filter 28 is exposed about by half at the introducing port, part of air introduced from the opened introducing port first invades into a dent in an upper surface of the deodorizing filter 28, and then goes from there to pass through the whole surface of the deodorizing filter 28 uniformly. Deviation of ventilation quantity in passing the deodorizing filter 28 is thus eliminated, and deodorizing performance of the whole deodorizing filter 28 is achieved to improve deodorizing performance. Since air uniformly passes the whole surface of the deodorizing filter 28, deodorizing performance can be maintained for a long time.
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