Window blind with illuminated lamellae

1. A window blind ( 10 )

with at least one lamella ( 25 ) and at least one lighting element ( 20 ), wherein

the lamella ( 25 ) comprises an illuminating body ( 30 ),

the lighting element ( 20 ) injects an artificial light ( 21 ) into the illuminating body ( 30 ),

the illuminating body ( 30 ) comprises a light guiding material, configured to transport the artificial light ( 21 ),

the illuminating body ( 30 ) comprises a light extraction means ( 40 ), configured to receive and to deflect the artificial light ( 21 ) out of the illuminating body ( 30 ),

characterized in that,

the light extraction means ( 40 ) is embedded within the illuminating body ( 30 ), and

the light extraction means ( 40 ) is controllable, in order to vary the degree of deflection of the artificial light ( 21 ).

2. A window blind ( 10 ) according to claim 1 ,

characterized in that the light extraction means ( 40 ) comprises a plurality of light extraction particles ( 41 , 41 ′), preferably that the light extraction particles ( 41 , 41 ′) are homogeneously aligned, if a voltage is applied, and wherein the light extraction particles ( 41 , 41 ′) are randomly arranged, if no voltage is applied.

3. A window blind ( 10 ) according to claim 1 ,

characterized in that the illuminating body ( 30 ) and the light extraction means ( 40 ) form at least one of the following: a suspended particle device, a LCD (Liquid Crystal Display) structure or an electro-chromic device.

4. A window blind ( 10 ) according to claim 1 ,

characterized in that the illuminating body ( 30 ) covers one of the surfaces of the lamella ( 25 ), preferably that the illuminating body ( 30 ) and the lamella ( 25 ) are one piece.

5. A window blind ( 10 ) according to claim 1 ,

characterized in that the window blind ( 10 ) comprises a computerized control system ( 70 ) to control the light extraction means ( 40 ).

6. A window blind ( 10 ) according to claim 1 ,

characterized in that each lamella ( 25 ) comprises a computerized control element ( 71 ) to control the light extraction means ( 40 ).

7. A window blind ( 10 ) according to claim 6 ,

characterized in that the computerized control element ( 71 ) of the lamella ( 25 ) is connected to and controlled by the computerized control system ( 70 ), preferably that the computerized control system ( 70 ) or the computerized control element ( 71 ) are connected via a LAN (Local Area Network) or WLAN (Wireless Local Area Network) with an computer ( 72 ).

8. A window blind ( 10 ) according to claim 1 ,

characterized in that the illuminating body ( 30 ) comprises a plurality of segments ( 31 , 31 ′), wherein the light extraction means ( 40 ) of each segment ( 31 , 31 ′) is independently controllable.

9. A window blind ( 10 ) according to claim 8 ,

characterized in that each segment ( 31 , 31 ′) is connected with the computerized control element ( 71 ).

10. A window blind ( 10 ) according to claim 1 ,

characterized in that the illuminating body ( 30 ) comprises a surface pattern ( 80 ), forming a Fresnel-type lens.

11. A window blind ( 10 ) according to claim 10 ,

characterized in that the surface pattern ( 80 ) comprises a plurality of refractor means ( 81 ), preferably that the surface pattern ( 80 ) covers one of the surfaces of the illuminating body ( 30 ), more preferably that the illuminating body ( 30 ) and the surface pattern ( 80 ) are one piece.

12. A window blind ( 10 ) according to claim 1 ,

characterized in that the lighting element ( 20 ) is embedded in a enclosure element ( 65 ), preferably that the enclosure element ( 65 ) is arranged on one of the side faces of the illuminating body ( 30 ).

13. A window blind system comprising at least one window blind ( 10 ) according to claim 1 and a computer ( 72 ),

wherein the window blind ( 10 ) is connected via a network with the computer ( 72 ), and

the computer ( 72 ) controls at least the light extraction means ( 40 ) of the at least one window blind ( 10 ).