| 摘要 |
PROBLEM TO BE SOLVED: To reduce the production cost of a filter 20, to facilitate its disposal after the use, and to provide it with a prescribed filtering performance when the filter 20 filtering air for air conditioning is provided in a ventilation unit 3 ventilating an air conditioner unit 4. SOLUTION: The ventilation unit 3 is formed with a filter storage part 21 in the lower part of its air introduction part 7, and the filter storage part 21 stores the filter 20 formed by molding a filter medium, with its air passing surface facing approximately horizontally. The filter storage part 21 is provided with a filter insertion port 80 in its rear wall part 21a and a U-cross-sectional recessed part 81 continuing to the lower side of the opening part of the filter insertion port 80. The filter storage part 21 is formed with ribs 85-87 in its left wall part 21b, right wall part 21c, and front wall part respectively so as to constitute a rectangular-frame lower-side filter support part 88 along with the upper wall part 84 of the recess part 81, and the outer circumferential part in the lower surface of the filter 20 is joined thereon to be retained.
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