| 摘要 |
<p>An air ventilation device (10), which is functional as both an air supply terminal device and an air exhaust terminal device, comprises one or more slot-like openings (18) which extend in the longitudinal and/or transverse direction of the device. These openings (18) are intended for the through passage of a gaseous ventilation medium and each opening co-acts with a pivotable guide vane assembly (20), such as to alter the flow conditions in the openings (18). The guide vane assembly comprises an elongated hollow body section (69) which has an appreciable thickness along the whole of its length and a guide fin (76). The guide fin (76) is flanked on both sides by longitudinally extending profiled side elements (14, 16). Extending along the whole length of the hollow thickened body section (69) of the assembly (20) and facing associated through passage openings (18) are guide vane setting means (62). The side elements (14, 16) are substantially planar and are provided with angled base surfaces (82, 106) which define the opening or openings (18).</p> |
