Light emitting diode lamp and illumination system
A light emitting diode (LED) lamp electrically connected to a switch is provided. The LED lamp includes a lamp body, an LED array disposed inside the lamp body, and a current control circuit disposed inside the lamp body. The current control circuit is electrically connected between the LED array and the switch. The current control circuit is capable of outputting various driving currents to the LED array according to the number of flashing times of the switch, so as to modulate the intensity of light emitted from the LED array. Since the above-mentioned LED lamp has the built-in current control circuit, users are capable of modulating the intensity of light emitted from the above-mentioned LED lamp by flashing the switch.
1. An illumination system, comprising:
a switch;
an LED light source; and
a current control circuit electrically connected between the switch and the LED light source, wherein when the switch is turned ON, the current control circuit outputs a driving current to change a brightness of the LED light source from a first brightness to a second brightness, and wherein the switch is intermittently actuated-deactuated to stop the change of the brightness, thereby maintaining the brightness of the LED light source at a third brightness.
2. The illumination system as claimed in claim 1 , wherein the switch comprises a tactile switch or a button switch.
3. The illumination system as claimed in claim 1 , wherein the LED light source comprises an LED lamp.
4. The illumination system as claimed in claim 1 , wherein the current control circuit is built in the switch.
5. The illumination system as claimed in claim 1 , wherein the current control circuit is built in the LED light source.
6. The illumination system as claimed in claim 1 , wherein the LED light source further comprises a temperature sensor electrically connected to the current control circuit, and the current control circuit modulates the driving current provided to an LED array according to a feedback signal provided by the temperature sensor.
7. The illumination system as claimed in claim 1 , wherein when the brightness of the LED light source changes from the first brightness to the second brightness during a time period of 0 to t 2 , the switch is not intermittently actuated-deactuated during said time period.
8. The illumination system as claimed in claim 1 , wherein when the brightness of the LED light source changes from the first brightness to the second brightness during a time period of 0 to t 2 , the switch is intermittently actuated-deactuated after the time period of 0 to t 2 , and the brightness of the LED light source is an over-drive brightness.
9. The illumination system as claimed in claim 8 , wherein the first brightness is greater than the second brightness, and the over-drive brightness is greater than the first brightness.
10. The illumination system as claimed in claim 9 , wherein the over-drive brightness is 1.5 times to 3 times of the first brightness.
11. The illumination system as claimed in claim 8 , wherein the second brightness is greater than the first brightness, and the over-drive brightness is greater than the second brightness.
12. The illumination system as claimed in claim 11 , wherein the over-drive brightness is 1.5 times to 3 times of the second brightness.
13. An illumination system comprising:
a switch;
an LED light source; and
a current control circuit electrically connected between the switch and the LED light source, wherein when the switch is turned ON, the current control circuit outputs a driving current to change a brightness of the LED light source from a first brightness to a second brightness, and wherein the switch is intermittently actuated —deactuated to stop the change of the brightness, thereby maintaining the brightness of the LED light source at a third brightness ranging between the first brightness and the second brightness.
14. The illumination system as claimed in claim 13 , wherein the first brightness is greater than the second brightness.
15. The illumination system as claimed in claim 13 , wherein the first brightness is lower than the second brightness.
16. The illumination system as claimed in claim 13 , wherein during the change of the brightness of the LED light source from the first brightness to the second brightness, the brightness of the LED light source changes non-continuously.
17. The illumination system as claimed in claim 13 , wherein during the change of the brightness of the LED light source from the first brightness to the second brightness, the brightness of the LED light source changes continuously.
18. The illumination system as claimed in claim 17 , wherein during the change of the brightness of the LED light source from the first brightness to the second brightness, the brightness of the LED light source changes linearly or non-linearly.