Patent attributes
A device for disinfecting the interior of a drain pipe having a tubular wall formed with a hole between the sink drain inlet and the U-shaped trap. A UV-C LED module is positioned to register with the hole and includes a UV-C LED that generates a radiation beam having a predetermined radiation angle to transmit UV-C light into the drain pipe through the hole to irradiate at least a portion of said interior surface and expose airborne pathogens contained therein to UV-C light. A lens generally coextensive with the tubular wall has a peripheral edge aligned with the hole. The UV-C LED is spaced from the lens a distance to cause the radiation beam to extend up to but not beyond the peripheral edge of the lens to maximize transmission of UV-C light through the lens to maximize exposure of the interior surface and airborne pathogens to the UV-C light.
