LIGHTING DEVICE

• US 20140346966A1
• Filed: 05/23/2014
• Published: 11/27/2014
• Est. Priority Date: 05/24/2013
• Status: Active Grant

• Current Assignee: Hark Group Holding Corp.
• Original Assignee: Hark Group Holding Corp.
• Inventors: Wu, Chao-Li
• Granted Patent: US 9,119,252 B2
• Time in Patent Office: Days
• US Class Current: 315/201
• CPC Class Codes: G05F 1/455 with phase control
• CPC Class Codes: H05B 41/3924 by phase control, e.g. using a triac H05B41/3922 takes precedence
• CPC Class Codes: H05B 45/46 having LEDs disposed in parallel lines
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

A lighting device includes a switch element coupled to a power source; a bridge current rectifying unit in communication with the switch element for converting alternating current received from the power source into direct current; a driving and light-emitting module in communication with the bridge current rectifying unit; and a counting and control unit in communication with the switch element and the driving and light-emitting module. The counting and control unit counts a switching number of the switch element, and selectively outputs one or both of a first enable signal and a second enable signal to the driving and light-emitting module to emit light of a selected feature according to the switching number of the switch element.

Claims

1. A lighting device, comprising:

a switch element coupled to a power source;

a bridge current rectifying unit in communication with the switch element for converting alternating current received from the power source into direct current;

a driving and light-emitting module in communication with the bridge current rectifying unit; and

a counting and control unit in communication with the switch element and the driving and light-emitting module for counting a switching number of the switch element, and selectively outputting one or both of a first enable signal and a second enable signal to the driving and light-emitting module to execute a corresponding function according to the switching number of the switch element.

2. The lighting device according to claim 1, wherein the counting and control unit is a programmable microcontroller or a flip-flop.

3. The lighting device according to claim 1, wherein the counting and control unit starts over the counting of the switching number of the switch element once the switch element is in an off state for a time period longer than a preset time period.

4. The lighting device according to claim 3, wherein the counting and control unit includes a capacitor for power supply to the counting and control unit during the preset time period.

5. The lighting device according to claim 1, wherein the driving and light-emitting module includes:

a driving circuit;

a first LED unit coupled to and driven by the driving circuit for emitting a light of a first color temperature in response to the first enable signal; and

a second LED unit coupled to and driven by the driving circuit for emitting a light of a second color temperature in response to the second enable signal.

6. The lighting device according to claim 1, wherein the driving and light-emitting module includes:

a driving circuit; and

an LED unit coupled to and driven by the driving circuit for emitting a light of a first luminance in response to the first enable signal, and emitting a light of a second luminance in response to the second enable signal.

7. The lighting device according to claim 1, further comprising a modulating module coupled to the driving and light-emitting module for fine-tuning luminance of the emitted light.

8. The lighting device according to claim 7, wherein the modulating module includes a variable resistor and the luminance is changed with resistance of the variable resistor.

9. The lighting device according to claim 8, wherein the modulating module further includes a knob coupled to the variable resistor and rotatable to change the resistance of the variable resistor.

10. A lighting device, comprising:

a light-emitting source for providing an illumination light;

a switch element coupled to a power source; and

a driving and control device in communication with the switch element and the light-emitting source for counting a switching number of the switch element, and selectively outputting one or both of a first enable signal and a second enable signal to the driving and light-emitting module to execute a corresponding function according to the switching number of the switch element.

11. The lighting device according to claim 10, wherein the driving and control device includes a bridge current rectifying unit in communication with the switch element for converting alternating current received from the power source into direct current to be transmitted to the driving and control device.

12. The lighting device according to claim 10, wherein the driving and control device includes:

a driving circuit in communication with the light-emitting source; and

a counting and control unit in communication with the switch element and the driving circuit for counting the switching number of the switch element, and selectively outputting one or both of the first enable signal and the second enable signal to the driving and light-emitting module to execute the corresponding function according to the switching number of the switch element.

13. The lighting device according to claim 11, wherein the counting and control unit is a programmable microcontroller or a flip-flop.

14. The lighting device according to claim 11, wherein the counting and control unit starts over the counting of the switching number of the switch element once the switch element is in an off state for a time period longer than a preset time period.

15. The lighting device according to claim 14, wherein the counting and control unit includes a capacitor for power supply to the counting and control unit during the preset time period.

16. The lighting device according to claim 10, wherein the light-emitting source includes:

a first LED unit coupled to and driven by the driving and control device for emitting the illumination light with a first color temperature in response to the first enable signal; and

a second LED unit coupled to and driven by the driving and control device for emitting the illumination light with a second color temperature in response to the second enable signal.

17. The lighting device according to claim 10, wherein the light-emitting source includes an LED unit, and the driving and light-emitting module drives the LED unit to emit the illumination light with a first luminance in response to the first enable signal, and emitting the illumination light with a second luminance in response to the second enable signal.

18. The lighting device according to claim 10, further comprising a modulating module coupled to the light-emitting source for fine-tuning luminance of the illumination light.

19. The lighting device according to claim 18, wherein the modulating module includes a variable resistor and the luminance is changed with resistance of the variable resistor.

20. The lighting device according to claim 19, wherein the modulating module further includes a knob coupled to the variable resistor and rotatable to change the resistance of the variable resistor.

21. A lighting device, comprising:

a bridge current rectifying unit in communication with a mains switch for converting alternating current from a power source into direct current;

a driving and light-emitting module in communication with the bridge current rectifying unit; and

a counting and control unit in communication with the mains switch and the driving and light-emitting module for counting a switching number of the mains switch, and selectively outputting one or both of a first enable signal and a second enable signal to the driving and light-emitting module to execute a corresponding function according to the switching number of the switch element.

22. The lighting device according to claim 21, wherein the counting and control unit selects to output the first enable signal and/or the second enable signal according to a switching-on number of the mains switch, which is realized by counting an alternating-current receiving number from the power source.

23. The lighting device according to claim 21, wherein the counting and control unit starts over the counting of the switching-on number of the mains switch once the mains switch is in an off state for a time period longer than a preset time period, and the counting and control unit includes a capacitor for power supply to the counting and control unit during the preset time period.