UV-C upper air purifier with down lighting combined fixture
View Patent ↗An air purifying light system using unsafe UV-C emitters mounted on an upward facing portion of the frame of the system and at least visible light LEDs mounted on a lower facing portion of the frame, wherein the UV-C emitters are configured to kill viruses and pathogens in a sanitization zone formed between the frame and the ceiling.
1. An air purifying light system, comprising:
a frame having an upper facing portion and a lower facing portion;
a plurality of visible light emitting LEDs positioned on the lower facing portion of the frame, to direct visible light below; and
a plurality of UV-C emitters positioned on the upward facing portion, which are configured to kill viruses and pathogens, thus sterilizing the air above the frame; and
a second plurality of UV-C emitters positioned on the lower facing portion of the frame; and
a room occupancy sensor, and a controller; and
wherein the room occupancy sensor and controller are configured to control the second plurality of UV-C emitters positioned on the lower facing portion, based on the sensed occupancy in a room or area where the air purifying light system is installed by the room occupancy sensor independently of control of the plurality of UV-C emitters positioned on the upward facing portion.
2. The air purifying light system of claim 1 further comprising a suspension system, configured to suspend the frame from below the ceiling.
3. The air purifying light system of claim 2 , wherein the suspension system is configured to suspend the frame at least 1 foot below the ceiling, at least 2 feet below the ceiling, and at least 4 feet below the ceiling.
4. The air purifying light system of claim 1 wherein the plurality of UV-C emitters positioned on the upward facing portion emit UV-C in the range of 235-280 nm.
5. The air purifying light system of claim 4 wherein the second plurality of UV-C emitters positioned on the lower facing portion emit UV-C in in the range of 200-235 nm.
6. The air purifying light system of claim 1 wherein the second plurality of UV-C emitters positioned on the lower facing portion emit UV-C in in the range of 200-235 nm.
7. The air purifying light system of claim 1 , further including one or more sensors positioned to form an invisible barrier shield at the level of the frame, wherein the one or more sensors are in communication with a controller that once an object is detected that passes through or interrupts the barrier causes the controller to turn off the plurality of UV-C emitters on the upward facing portion of the frame.
8. The air purifying light system of claim 1 , further including an air circulating system that causes air below the frame to circulate with air above the frame.
9. The air purifying light system of claim 8 , wherein the air circulating system includes one or more ceiling fans.
10. The air purifying light system of claim 9 , wherein the one or more ceiling fans are directly connected to the frame.
11. The air purifying light system of claim 1 , wherein the upward facing UV-C emitters are either 254 nm, 270 nm or 272 nm wavelength emitters.
12. The air purifying light system of claim 1 , wherein the frame is comprised of an outer perimeter and an inner perimeter, having an aperture formed about the inner perimeter.
13. The air purifying light system of claim 1 , wherein the ceiling is devoid of any of material that can reflect greater than 5% of the light generated by the UV-C emitters in the range of 235-280 nm on the upward facing portion.