SANITIZING SYSTEMS AND METHODS FOR COMMERCIAL PASSENGER VEHICLES

1 . A sanitizing system for a commercial passenger vehicle comprising:

at least one air distribution system with at least one filter positioned in the air stream of the at least one air distribution system,

the at least one filter having an intake side and an exhaust side, and comprising filter media to remove contaminants,

at least one irradiation system positioned in proximity to at least one of the intake side or exhaust side of the at least one filter,

the at least one irradiation system including a plurality UV radiation sources in an array configured to irradiate exposed surfaces of the filter media with UV radiation of a predetermined wavelengths or range of wavelengths, and at a predetermined energy level; and

at least one support system for the array of UV radiation sources to position the array in predetermined relationship to the surfaces of the filter media in the at least one filter.

2 . The sanitizing system of claim 1 , wherein said filter media includes surface discontinuities to increase surface area, and the at least one support system positions UV radiation sources to irradiate all of the surface areas exposed by the surface discontinuities.

3 . The sanitizing system of claim 2 , wherein said surface discontinuities are pleats and the support system positions UV radiation sources in association with the pleats.

4 . The sanitizing system of claim 1 , wherein the system is configured to be positioned in the filter housing of the at least one air distribution system or adjacent the filter housing of the at least one air distribution system in association with an extension duct.

5 . The sanitizing system of claim 1 , wherein the plurality UV radiation sources are selected from the group consisting of UV LED's, UV mercury lamps, UV excimer lamps or combinations thereof.

6 . The sanitizing system of claim 1 , wherein the filter media is formed in a substantially cylindrical form and the array is configured to irradiate the cylindrical surfaces of the at least one filter.

7 . The sanitizing system of claim 6 , wherein the array is positioned on the exhaust side of the at least one filter, interior to the cylindrical form or on the intake side of the at least one filter, exterior to the cylindrical form.

8 . The sanitizing system of claim 1 , further comprising a photo catalytic oxidation (PCO) system positioned in proximity to the at least one irradiation system.

9 . The sanitizing system of claim 1 , further comprising a reflector associated with at least one UV radiation source positioned to reflect UV radiation toward the at least one filter.

10 . The sanitizing system of claim 1 , wherein the predetermined wavelengths of the plurality of UV radiation sources is between 200 and 280 nm.

11 . The sanitizing system of claim 1 , wherein the array includes a plurality of UV LED emitters provided on PCB assemblies on a support, the support configured to correspond to the shape and configuration of the at least one filter.

12 . The sanitizing system of claim 1 , wherein the system includes at least one structure to cause the speed of the circulated air to be slowed for treatment by the at least one irradiation system.

13 . The sanitizing system of claim 1 , further comprising an air motion sensor and associated system to turn the array on in the event that the air distribution system is activated and off in the event that the air distribution system is deactivated.

14 . The sanitizing system of claim 1 , wherein at least one sanitizing UV array is provided in a position adjacent to at least one outlet of an air distribution system of the commercial passenger vehicle that recirculates air to the passenger cabin of the commercial passenger vehicle or at least one surface in the cabin to treat air distributed to the passenger cabin of the commercial passenger vehicle from at least one outlet of an air distribution system of the commercial passenger vehicle.

15 . The sanitizing system of claim 1 , wherein the at least one irradiation system is provided with the at least one filter to provide a drop-in replacement for an existing filter of the commercial passenger vehicle.

16 . The sanitizing system of claim 1 , wherein the at least one irradiation system is powered using a power supply of the commercial passenger vehicle.

17 . The sanitizing system of claim 1 , wherein the at least one irradiation system is operated at a precise operating current level over temperature.

18 . The sanitizing system of claim 1 , wherein the at least one irradiation system is mounted on a framework and does not substantially impede air flow through the at least one filter.

19 . The sanitizing system of claim 1 , wherein the at least one irradiation system further includes at least one pre-filter.

20 . A method for sanitizing in a commercial passenger vehicle comprising:

providing at least one filter in an air distribution system of the commercial passenger vehicle;

positioning at least one sanitizing UV array in close proximity to at least one exposed surface of the at least one filter in the air distribution system;

causing the flow of air through the air distribution system and at least one filter and activating the at least one sanitizing UV array to irradiate the air stream adjacent the at least one filter and irradiate the exposed surfaces of the at least one filter, and distributing air treated by the at least one sanitizing UV array and at least one filter to a passenger cabin of the commercial passenger vehicle.