(57) The present invention refers to a device to increase the discharge of smoke through
a fire gas vent (1), which is arranged through the roof of a building, comprising
an essentially rectangular frame (2) with two at the frame pivoting doors (4, 5),
which by means of at least one opening device (6) which can bring the doors (4, 5),
at smoke emission in the building, from an essentially horizontal closed position
to an essentially vertically open position, wherein the doors (4, 5) in open position
forms side walls (7, 8), which extends along the long sides (9, 10) of the rectangular
frame (2), and at the short sides (11, 12) of the frame (2) arranged upright foldable
windshield (13, 14).
The essential for the invention is that at least one windshield (13, 14) is arranged
at each short side (11, 12) of the frame (2) and is pivotable attached at the frame
(2) and at respectively door (4, 5), wherein said windshield (13, 14) folds up at
opening of the doors (4, 5) and in upright unfolded position extends to a height which
essentially correspond to the height of the doors (4, 5) along essentially the entire
short sides (10, 11) of the frame, wherein the doors (4, 5) and the windshields (13,
14) form an extension of the side walls (9, 10, 11, 12) of the frame in upright unfolded
position.
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