THERMAL MANAGEMENT OF LED ILLUMINATION DEVICES WITH SYNTHETIC JET EJECTORS
An illumination device (b 1 - 01 ) is provided which comprises a housing (b 1 - 03 ) equipped with an aperture (b 1 - 37 ), first (b 1 - 33 ) and second (b 1 - 35 ) diaphragms disposed in said housing and in fluidic communication with said aperture, and an LED (b 1 - 15 ) disposed between said first and second diaphragms.
1 . An illumination device, comprising:
a housing;
a pedestal disposed in said housing;
a synthetic jet ejector supported by said pedestal; and
at least one LED supported by said synthetic jet ejector.
2 . The illumination device of claim 1 , wherein said synthetic jet ejector comprises first and second diaphragms.
3 . The illumination device of claim 1 , wherein said synthetic jet ejector has first and second opposing surfaces having first and second LEDs, respectively, disposed thereon.
4 . The illumination device of claim 1 , wherein said synthetic jet ejector has third and fourth opposing surfaces having third and fourth LEDs, respectively, disposed thereon.
5 . The illumination device of claim 1 , wherein said synthetic jet ejector is essentially polyhedral in shape, wherein said synthetic jet ejector is attached to said pedestal across a first face of said polyhedron, and wherein at least one LED is disposed on each of the remaining faces of said polyhedron.
6 . The illumination device of claim 5 , wherein said polyhedron has six faces.
7 . The illumination device of claim 5 , wherein said polyhedron has five faces.
8 . The illumination device of claim 5 , wherein said polyhedron has four faces.
9 . The illumination device of claim 1 , wherein said LED is supported on a surface of said synthetic jet ejector, and wherein said synthetic jet ejector is adapted to emit a plurality of synthetic jets across said surface.
10 . The illumination device of claim 1 , wherein said LED is supported on a surface of said synthetic jet ejector, and wherein said synthetic jet ejector is adapted to emit a plurality of synthetic jets across said surface and adjacent to said LED.
11 . The illumination device of claim 1 , wherein said housing is diffusely transmissive.
12 . The illumination device of claim 1 , wherein said synthetic jet ejector has first and second diaphragms, wherein said housing has a longitudinal axis, and wherein said first and second diaphragms are oriented parallel to said longitudinal axis.
13 . The illumination device of claim 1 , further comprising:
a threaded connector adapted to rotatingly engage said illumination device to a source of electricity.
14 . The illumination device of claim 10 , wherein said housing is bulbous in shape.
15 . The illumination device of claim 1 , wherein said housing has at least one aperture therein such that the interior of said housing is in fluidic communication with the exterior of said housing.
16 . The illumination device of claim 1 , wherein said synthetic jet ejector has a plurality of fins disposed on an external surface thereof.
17 . The illumination device of claim 13 , wherein said synthetic jet ejector is adapted to emit a synthetic jet into a channel formed by opposing fins of said plurality of fins.
18 . An illumination device, comprising:
a housing;
a threaded connector adapted to rotatingly engage said illumination device to a source of electricity;
a synthetic jet actuator disposed in said connector;
a manifold disposed on said housing and having a plurality of apertures therein;
an LED disposed on said manifold; and
a conduit in fluidic communication with said manifold and said synthetic jet actuator.
19 . The illumination device of claim 18 , wherein said conduit is cylindrical in shape.
20 . The illumination device of claim 18 , wherein said synthetic jet actuator has first and second diaphragms.
21 . The illumination device of claim 18 , wherein said synthetic jet actuator is a magneto-electrical device.
22 . The illumination device of claim 18 , wherein said synthetic jet actuator is a piezoelectric device.
23 . The illumination device of claim 18 , wherein said LED is disposed adjacent to at least one of said plurality of apertures.