| 摘要 |
In the upper area of the height adjustable device (5) a pivot device (11) is incorporated, on which the fan (15) is fitted. The fan is pivotable around a horizontal axis (17) vertical to the fan axis (16). The pivot device is fitted on a frame (8) on the height-adjustable device. It is U-shaped with a basic part (14) and two arms (12, 13). The horizontal pivot axis runs through both arms of the pivot device and is arranged vertically to them. The vertical rotary axis (18) runs through a cross component (9, 10) on the frame (8) and is directed vertically to the basic part (14).
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