LIGHTING FIXTURE
A luminaire is mechanically attached to a mounting structure, mounted and positioned to illuminate a space adjacent to the luminaire The luminaire comprises at least one light source mounted on a substrate, and a thermal bus transporting heat from the substrate to a heat sink that is veiled from view. The at least one light source and the substrate are exposed to, and illuminate, the space. Another disclosed luminaire includes LEDs and a fixture on which the LEDs are disposed. The fixture is configured to install onto a grid of a suspension ceiling by hooking or clamping onto the grid of the suspension ceiling with the LEDs disposed on the installed fixture facing downward from the suspension ceiling.
1 . A luminaire attached to a grid of a suspended ceiling, positioned to illuminate a space below the suspended ceiling, the luminaire comprising at least one ultraviolet light source mounted on a substrate having a minimum dimension less than or equal to 30 mm, the at least one ultraviolet light source being exposed to, and directly illuminating, the space below the suspended ceiling.
2 . The luminaire of claim 1 wherein the substrate has the shape of long plate having a width of less than or equal to 30 mm and a thickness less than about 5 mm and a length much greater than the width.
3 . The luminaire of claim 1 wherein the substrate has the shape of long plate having a width of 5-30 mm and a length of 50-1300 mm.
4 . The luminaire of claim 1 wherein the at least one ultraviolet light source comprises at least one ultraviolet LED or ultraviolet OLED or ultraviolet laser diode, or an array of ultraviolet mini-LEDs or an array of ultraviolet micro-LEDs.
5 . The luminaire of claim 4 wherein the ultraviolet LED or LEDs have peak wavelength less than about 380 nm.
6 . The luminaire of claim 1 wherein the at least one ultraviolet light source comprises at least one ultraviolet LED and the at least one ultraviolet LED does not include primary or secondary optics.
7 . The luminaire of claim 1 wherein the substrate comprises a printed circuit board providing electrical, mechanical, and thermal connections to the at least one ultraviolet light source mounted on the grid of the suspended ceiling.
8 . (canceled)
9 . The luminaire of claim 1 further comprising:
an electronic driver disposed above the suspended ceiling and electrically connected to power the at least one ultraviolet light source.
10 . A luminaire mechanically mounted to a suspended ceiling comprising ceiling tiles and positioned to illuminate a space below the suspended ceiling, the luminaire comprising at least one ultraviolet LED light source mounted on a substrate, the at least one ultraviolet LED light source exposed below the ceiling tiles, and directly illuminating the space below the suspended ceiling.
11 . The luminaire of claim 10 wherein the substrate has the shape of long plate having a width of 5-30 mm and a length of 50-1300 mm.
12 . The luminaire of claim 10 wherein the long plate is arranged parallel with a grid segment of the suspended ceiling.
13 . The luminaire of claim 10 further comprising:
an electronic driver disposed above the suspended ceiling and electrically connected to power the at least one ultraviolet LED.
14 . A luminaire comprising:
a printed circuit board (PCB);
LEDs mounted on the PCB; and
a fixture including an LED mount section on which the PCB is disposed and a connector section joined to the LED mount section and configured to connect with the grid of the suspension ceiling with the LEDs mounted on the PCB disposed on the LED mount section facing downward from the suspension ceiling.
15 . The luminaire of claim 14 wherein the fixture is a thermal bus effective to provide heat dissipation for the LEDs on the PCB disposed on the LED mount section of the fixture.
16 . The luminaire of claim 14 wherein the joined connector section and LED mount section of the fixture are oriented at an angle of at least 45° to one another.
17 . The luminaire of claim 14 wherein the joined connector section and LED mount section of the fixture are oriented at an angle of at least 80° to one another.
18 . The luminaire of claim 14 wherein the connector section of the fixture is shaped to connect with the grid of the suspension ceiling by hooking onto the grid of the suspension ceiling.
19 . The luminaire of claim 14 wherein the connector section is configured to connect with the grid of the suspension ceiling without using any fasteners or adhesive.
20 . The luminaire of claim 14 wherein the LEDs comprise ultraviolet (UV) LEDs.
21 . A disinfection system comprising:
a luminaire as set forth in claim 14 installed onto a grid of a suspension ceiling;
wherein the LEDs of the luminaire emit ultraviolet light effective to perform disinfection.