Patent ID: 7511283

Claim:
An ultraviolet disinfection device comprising: (a) a body for accepting at least one object to be disinfected, said body containing at least one germicidal UV lamp; (b) a top cover that is supported by said body, said top cover having at least one opening for accepting the objects to be disinfected into at least one disinfecting cell; said top cover having at least one triggering hook for extending into said body of the ultraviolet disinfection device; (c) at least one protective shield that surrounds said at least one germicidal UV lamp, said protective shield being made of a material that is opaque to ultraviolet light, said protective shield having a hollow body and a stack of parallel slats with spacing in between the said slats, said slats of said stack being connected by at least one link extending from the said body of said protective shield, the center of each said slat having a hole larger than the diameter of said UV lamp, the hollow center of the said body of said protective shield and said holes at the center of all layers of slats altogether forming a cavity for accommodating the said UV lamp, at least a portion of the light-emitting length of said at least one germicidal UV lame being surrounded by said stack of slats, wherein said protective shield prevents direct leakage of UV light generated from said germicidal UV lamp through said at least one opening on said top cover; wherein said disinfection device further includes at least one additional feature selected from the group consisting of: (d) the density of vertical spacing of said horizontal slats of said protective shield is lower at the bottom, and higher on the top; (e) i. said body of the device has at least one supporting pole extended unwards from the bottom; ii. said protective shield has a least one fixing arm protruding outwards from the body of said protective shield; iii. said at least one fixing arm of said protective shield is mounted on top of said at least one supporting pole, and said top cover has at least one positioning and locking hook extending downwards from the bottom surface of said top cover; (f) wherein the protective shield reduces the ultraviolet light emitted from the device eight fold; and (g) wherein the protective shield reduces the ultraviolet light emitted from the device to 20 Î¼Wcm âˆ’2 .