| 摘要 |
PROBLEM TO BE SOLVED: To reduce a dead space and extend the distance between two openings in a double damper device. SOLUTION: The double damper device is provided with two opening/closing boards 5, 5 for two openings 4, 4. A driving part 2 for driving both boards 5, 5 is provided between the openings 4, 4. In this case, driving shafts are provided to the respective boards 5, 5, side walls 3a, 3a supporting the driving shafts are provided to frames 3, 3 in which opening 4, 4 are formed, and the driving part 2 may be provided between the central both side-walls 3a, 3a adjacent to each other. |
