Patent ID: 8286391

Claim:
A portable building comprising: a rectangular cuboid box forming a principal member of the building, the box including at least: a box frame comprising four studs, four short horizontal beams and four lengthwise beams, a fixed top plate at the top thereof; a fixed bottom plate the bottom thereof, and a fixing frame for hoisting equipment at the tops of at least one pair of the studs; at least one movable top plate forming the roof of the building, one side of the top plate pivoting on an edge of the top of the box, and the top plate being capable of pivoting downwards to rest on a side of the box; at least one movable bottom plate forming a floor of the building, one side of the bottom plate pivoting on one edge of the bottom of the box, and the bottom plate being capable of pivoting upwards to rest on the side of the box; at least one side plate forming a side wall of the building, the side plate being capable of being dismantled and providing support between the edges of the top plate and the bottom plate; at least one set of lighting equipment comprising a cabling part embedded in the fixed top plate and the movable top plate; at least two hoisting devices that are employed to stow and to open the movable top plate and the movable bottom plate, and the hoisting devices removably mounted in the fixing frame on the studs, and wherein the fixed top plate and the movable top plate provide the roof of the building, and include at least an outer rainproof layer, an internal decorative layer and a steel structural framework, wherein the outer rainproof layer on the fixed top plate is integrally formed of reinforced glass, the two longitudinal sides of the outer rainproof layer enclosing the two lengthwise beams of the fixed top plate and forming a trough shape; the outer rainproof layer of the movable top plate is coloured steel sheet which extends beyond the steel framework and the inner decorative layer of the movable top plate and joins the fixed top plate at the outer side in order to prevent the inflow of rainwater; and wherein a sealing strip is provided at a joint between the fixed top plate and the movable top plate.