Patent ID: 7743815

Claim:
A roller shutter ( 1 ) comprising: a plurality of roller shutter laths ( 3 ) each made from a rolled and formed one piece sheet material; said laths ( 3 ) each comprising a slat ( 5 ) extending the length of the roller shutter lath ( 3 ), said slat ( 5 ) being curved at a lengthwise edge thereof to form a channel ( 6 ) and a hook arrangement; a plurality of light/air slots ( 22 ) arranged in the slat ( 5 ), said light/air slots ( 22 ) being arranged adjacent each other in the lengthwise direction of the roller shutter lath ( 3 ), said light/air slots ( 22 ) having a height corresponding to 40% to 80% of the height of the slat ( 5 ) such that in the suspended state of the roller shutter ( 1 ) the proportion of surface area of the light/air slots ( 22 ) amounts to about 20% to 30% of the total surface area of the roller shutter ( 1 ); a lath body ( 4 ) having a top side ( 13 ) from which the slat ( 5 ) emerges and extends, said channel ( 6 ) being arranged a distance from the lath body ( 4 ) such that the height of the slat ( 5 ) measured between the channel ( 6 ) and the top side of the lath body ( 4 ) is more than 30% of the height of the lath body ( 4 ); said lath body ( 4 ) having an underside ( 10 ) and defining an interengagement slot ( 7 ) extending along the length of the lath ( 3 ), said interengagement slot ( 7 ) opening downwardly away from the slat ( 5 ) and being configured such that the channel ( 6 ) of a second identically configured roller shutter lath ( 3 ) can be hooked therein; and a canopy-like projection ( 10 ) formed by said underside ( 10 ) between the interengagement slot ( 7 ) and a front side ( 8 , 9 ) of the lath ( 3 ) that extends along the length of the roller shutter lath ( 3 ) alongside the slot ( 7 ) and forms a sunroof protruding forwardly of the light/air slots ( 22 ) in the lath ( 3 ) located underneath which shades the light/air slots ( 22 ) of an underlying lath ( 3 ).