Patent ID: 8578650

Claim:
A greenhouse for year-round usage comprising outside walls, a roof structure, a fixed roof provided with an insulating material portion, the outside walls being provided with translucent surfaces such that light may be received into the greenhouse from at least two geographic directions, light reflecting surfaces being provided in connection with the translucent surfaces on the outside walls, wherein the light reflecting surfaces are positioned below the translucent surfaces on a ground surface, such that the light reflecting surfaces extend away from the outside wall, said light reflecting surfaces being arranged to extend from the outside wall in a direction advancing downwardly in an inclined manner, thus forming a part of a yard solution surrounding the greenhouse, the downwardly inclined direction of one of said light reflecting surfaces is towards the south 0 to 10 degrees and the downwardly inclined direction of another of said light reflecting surfaces is towards the east 5 to 15 degrees or the west 5 to 15 degrees, and the light reflecting surfaces are made from metal plates.