Thermal management system for LED array
View Patent ↗A device, comprising (a) a chamber having a liquid disposed therein, (b) an LED array having a first surface which is in contact with said liquid, and (c) at last one actuator adapted to dislodge vapor bubbles from said first surface through the emission of pressure vibrations.
1. A device, comprising:
a first set of LED arrays adapted to emit light over a first principle bandwidth;
a second set of LED arrays adapted to emit light over a second principle bandwidth;
a third set of LED arrays adapted to emit light over a third principle bandwidth; and
a synthetic jet ejector;
wherein each member of said first, second, and third sets of LED arrays comprises a transparent, essentially planar substrate having a first light emitting surface with a first set of LEDs disposed thereon and a second light emitting surface with a second set of LEDs disposed thereon, wherein the members of said first, second and third sets of LED arrays are arranged in parallel, and wherein said synthetic jet ejector is adapted to emit a synthetic jet across the first or second light emitting surface of at least one member of at least one of said first, second and third sets of LED arrays.
2. The device of claim 1 , further comprising a plurality of synthetic jet ejectors;
wherein each of said plurality of synthetic jet ejectors is adapted to emit a synthetic jet across the first or second light emitting surface of at least one member of at least one of said first, second and third sets of LED arrays.
3. The device of claim 2 , wherein the first and second sets of LEDs transmit light along a common axis and in the same direction, and wherein the first set of LEDs are staggered with respect to the second set of LEDs such that the light emitted by the first set of LEDs is transmitted through the LED array upon which it is disposed.
4. The device of claim 2 , wherein each member of said first, second, and third sets of LED arrays has a first synthetic jet ejector associated therewith which is adapted to emit a plurality of synthetic jets across said first surface of said member and has a second synthetic jet ejector associated therewith which is adapted to emit a plurality of synthetic jets across said second surface of said member.
5. The device of claim 2 , wherein each member of said first, second, and third sets of LED arrays has a synthetic jet ejector associated therewith which is adapted to emit a first plurality of synthetic jets across said first surface of said member and a second plurality of synthetic jets across said second surface of said member.
6. The device of claim 1 , wherein the LEDs in a first member of the first, second and third sets of LED arrays are staggered with respect to the LEDs in a second member of the first, second and third sets of LED arrays such that the light emitted by the LEDs in the first member are transmitted through the second member.
7. The device of claim 1 , wherein the LEDs in any member of the first, second and third sets of LED arrays are staggered with respect to the LEDs in any other member of the first, second and third sets of LED arrays.
8. The device of claim 1 , wherein the first set of LEDs are staggered with respect to the second set of LEDs.
9. The device of claim 1 , wherein said first set of LED arrays is adapted to emit red light, wherein said second set of LED arrays is adapted to emit green light, and wherein said third set of LED arrays is adapted to emit blue light.
10. The device of claim 1 , wherein said first, second and third sets of LED arrays are disposed in a liquid medium.
11. The device of claim 10 , further comprising a plurality of synthetic jet ejectors, and wherein each of said plurality of synthetic jet ejectors is adapted to emit a plurality of synthetic jets between the opposing surfaces of an adjacent pair of LED arrays.
12. The device of claim 1 , wherein each member of said first, second and third sets of LED arrays is centered on a common longitudinal axis and is adapted to emit light along said common longitudinal axis.
13. The device of claim 1 , wherein each member of said first set of LED arrays is adapted to emit light in the red region of the visible spectrum, wherein each member of said second set of LED arrays is adapted to emit light in the blue region of the visible spectrum, wherein each member of said third set of LED arrays is adapted to emit light in the green region of the visible spectrum, and further comprising a dichroic filter disposed between said first and second sets of LED arrays.
14. The device of claim 13 , wherein said dichroic filter reflects light in the blue and green regions of the spectrum, and transmits light in the red region of the spectrum.
15. The device of claim 14 , wherein the device is adapted to emit light through a first end of the device, and further comprising a reflector disposed on a second end of the device.
16. The device of claim 1 , wherein said first, second and third sets of LED arrays are disposed within a housing having a window therein, and wherein the interior of said housing has a reflective material disposed thereon.
17. A device, comprising:
a first set of LED arrays adapted to emit light over a first principle bandwidth;
a second set of LED arrays adapted to emit light over a second principle bandwidth;
a third set of LED arrays adapted to emit light over a third principle bandwidth; and
a plurality of synthetic jet ejectors;
wherein each member of said first, second, and third sets of LED arrays is disposed in a liquid medium and comprises a plurality of LEDs disposed on a transparent substrate, wherein at least one of said plurality of synthetic jet ejectors is adapted to emit a synthetic jet across a light emitting surface of at least one member of at least one of said first, second and third sets of LED arrays, and wherein at least one of said plurality of synthetic jet ejectors is adapted to emit a plurality of synthetic jets between the opposing surfaces of an adjacent pair of LED arrays.
18. The device of claim 17 , wherein said plurality of synthetic jet ejectors is adapted to emit a plurality of synthetic jets between the opposing surfaces of any adjacent pair of LED arrays.
19. The device of claim 17 , wherein each member of said first, second, and third sets of LED arrays has first and second major surfaces with first and second respective sets of LEDs disposed thereon.
20. The device of claim 19 , wherein said plurality of synthetic jet ejectors is adapted to emit a first plurality of synthetic jets across the first major surface of each member of said first, second, and third sets of LED arrays, and wherein said plurality of synthetic jet ejectors is adapted to emit a second plurality of synthetic jets across the second major surface of each member of said first, second and third sets of LED arrays.