Patent ID: 7824079

Claim:
A light diffuser for use with a light tower equipped with a T-bar, crossbar or similar light support, comprising: an upper bracket, wherein said upper bracket lies in a generally horizontal plane; a lower ring, wherein said lower ring lies in a plane generally parallel to said upper bracket, wherein said lower ring and said upper bracket are generally positioned such that said upper bracket is above said lower ring such that said upper bracket and said lower ring have a central axis plane running generally through the center of said upper bracket and generally through the center of said lower ring; wherein said upper bracket is positioned above said T-bar, crossbar or similar light support of said light tower and said lower ring is positioned below said T-bar, crossbar or similar light support of said light tower; a means for moving said upper bracket and said lower ring closer together and further apart; a plurality of flexible rod assemblies connecting said upper bracket and said lower ring, said plurality of flexible rod assemblies forming a support structure between said upper bracket and said lower ring, said support structure expandably configured such that when said lower ring and said upper bracket are in a farther apart position, said flexible rod assemblies are in a generally straight position, when said lower ring and said upper bracket are moved closer together, said flexible rod assemblies flex outward to form a generally spherical or generally ellipsoidal shaped frame, said flexible rods assemblies positioned such that when said lower ring is moved away from said upper bracket, said rod assemblies straighten around said support T-bar, crossbar, or similar light structure such that said support T-bar, crossbar, or similar light structure does not interfere with said straightening of said rods; and an envelope of light diffusing material removably attached to said upper bracket and said lower ring and encapsulating said plurality of flexible rod assemblies, said envelope supported by said plurality of flexible rod assemblies, said plurality of flexible rod assemblies and said envelope forming a generally spherical or generally ellipsoidal light diffuser when said lower ring is moved towards said upper bracket.