SYNTHETIC JET EJECTOR EQUIPPED WITH COLD TEMPERATURE START CONTROL DELAY

1 . A device, comprising:

a host device;

a synthetic jet ejector embedded in said host device;

a temperature sensor; and

a controller which controls the operation of the synthetic jet ejector, and which is in communication with said temperature sensor;

wherein the controller starts the synthetic jet ejector only when the temperature sensed by the temperature sensor exceeds a minimum threshold value T v .

2 . The device of claim 1 , wherein T v ≧0° C.

3 . The device of claim 1 , wherein 0° C.≦T v ≦50° C.

4 . The device of claim 1 , wherein said temperature sensor is mounted on said synthetic jet ejector.

5 . The device of claim 1 , wherein the controller starts the synthetic jet ejector when the host device is powered up if T v ≧0° C.

6 . The device of claim 1 , wherein the host device is an LED fixture.

7 . The device of claim 6 , wherein the LED fixture is a vehicle headlight.

8 . The device of claim 1 , wherein the host device is a computational device.

9 . The device of claim 8 , wherein the host device is a handheld device.

10 . The device of claim 8 , wherein the host device is a desktop PC or a laptop PC.