| 摘要 |
PROBLEM TO BE SOLVED: To provide an air filter which can arrange a filter material at a desired position with a simple constitution when assembling a filter frame. SOLUTION: The air filter has the filter frame having a bottom board 12 and a top board and the filter material arranged in a V shape viewed from the top board side. A front bridge part 25F displaying a plurality of sections of U-character is arranged at a front opening part 39F of the filter frame. A top part of the V shape of the filter material is arranged in the front bridge part 25F. A first front curved part 16F curvedly formed toward the top board and a second front curved part 17F curvedly formed from the first front curved part 16F further into the filter frame are arranged at an edge part 12F of the bottom board 12. A front concave part 21F, with which the front bridge part 25F is engaged, is formed at the second front curved part 17F. A concave part is formed at a rear edge part 12B of the bottom board 12 and a front edge part and also a rear edge part of the top board. COPYRIGHT: (C)2008,JPO&INPIT
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