Method and apparatus for treating an inside volume of a mobile vehicle

A method of treating an inside volume of a mobile vehicle, the method comprising the steps of:

• obtaining a treatment unit placed in an operative position with respect to the mobile vehicle, the treatment unit comprising:
• a) a frame;
• b) a source of UV light;
• and
• c) an air mover for controllably directing air within the inside volume to be exposed to UV light rays generated by the UV light source,
• the treatment unit changeable between first and second states;
• operating the air treatment unit in the second state wherein surfaces within the inside volume are directly exposed to UV light rays from the source of UV light;
• changing the air treatment unit from the second state into the first state by repositioning at least one part of the treatment unit so that the at least one part of the treatment unit strategically blocks UV light rays from the UV light source so that at least part of the surfaces directly exposed to UV light rays from the UV light source with the treatment unit in the second state are not directly exposed to UV light rays from the UV light source;
• and such that in the first state the frame defines a sub-volume through which air can circulate;
• and
• operating the treatment unit in the first state wherein air directed by the air mover is disinfected by UV light rays from the UV light source and distributed within the inside volume.