| 摘要 |
This air vent intended for private or office rooms, or for the passenger compartments of vehicles, notably automobiles, comprises an air outlet and a diffuser movable fitted therein to permit a variable and orientable diffusion of the air stream flowing therefrom, said outlet comprising part-cylindrical lips receiving a drum-shaped diffuser comprising in turn two opposite cylindrical sectors rotatably fitted in said lips about their common axis, at least one of said sectors being adapted to act a shutter to close said outlet completely in one position, air circulation passage being formed between said sectors, said passages being wider at one end than at the opposite end, whereby a divergent diffusion or a convergent projection is obtained accordingly as the drum is disposed with the wider or narrower ends of its air circulation passages on the outlet side of the diffuser, the air stream thus obtained being adapted to be oriented at will also by rotating said drum. |
