| 摘要 |
Bed ventilation device comprising a flexible inflatable envelope (2) for permanent placement between a bed (1) and bed covers (7, 8, 9) and an air supply unit (6) connected on an air inlet (4) of the envelope for supplying air to the envelope, the inflatable envelope comprising air-flow channels (2) with air outlet holes (3) distributed over the air-flow channels, characterised in that the air-flow channels (2) have a predetermined air permeability which is chosen such that upon activation of the air supply unit (6), the channels are substantially completely inflated before air escapes through the air outlet holes.
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