(57) A ventilation device (1) for the provision of ventilating air to a room comprises
a main body structure (2, 3, 4, 5) adapted for location at the edge (4) of a door
or window and having an internal air channel (6) whereby air can flow across said
edge (4) from an external side (E) to an internal side (I) i.e. within the room. An
airflow control serves to control airflow through the channel (6) and comprises a
plate-form flap (8) pivotal on a hinge (9) on the body structure so as to be swingable
between a closed position (A) and a maximum open position (B). Additionally the hinge
(9) is so arranged that when the flap (8) is moved to a predetermined third position
(C), specifically slightly away from the closed position (A), the flap (8) can be
lifted away from the main body structure, thereby facilitating for example cleaning
of the internals of the body structure. An external canopy (15) can be provided, and
sound insulating material (17, 20) can be located internally on both the body structure
and the canopy (15).
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