Light emitting diode lamp with synchronous pins and synchronous light emitting diode lamp string

• US 20060133078A1
• Filed: 04/29/2005
• Published: 06/22/2006
• Est. Priority Date: 12/22/2004
• Status: Active Grant

• Current Assignee: Semisilicon Technology Corp.
• Original Assignee: Semisilicon Technology Corp.
• Inventors: Peng, Jacky
• Granted Patent: US 7,465,056 B2
• Time in Patent Office: Days
• US Class Current: 362/231
• CPC Class Codes: F21S 6/001 being candle-shaped with varying lighting effect of simulating flames F21S10/04; string of light sources F21S4/00
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/30 Driver circuits
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

The present invention provides a light emitting diode lamp, which includes at least a light emitting diode and a control circuit. The light emitting diode lamp has an anode pin, a cathode pin, and a synchronous pin. The anode pin and the cathode pin receive a DC voltage, and the synchronous pin is connected to the control circuit. Moreover, the present invention provides a synchronous light emitting diode lamp string, which includes a plurality of light emitting diode lamps and at least a power adapter. Each light emitting diode lamp has a synchronous pin, and all synchronous pins are connected together. The control circuit can control the color changing of the light emitting diode based on a reference signal from the synchronous pin.

Claims

1. A light emitting diode lamp comprising at least a light emitting diode and a control circuit, which is characterized in:

said light emitting diode lamp has an anode pin, a cathode pin and a synchronous pin, said synchronous pin is electrically connected to said control circuit, and said control circuit controls the lighting of said light emitting diode based on the signal from said synchronous pin.

2. The light emitting diode lamp as claimed in claim 1, wherein comprises a red light emitting diode, a green light emitting diode and a blue light emitting diode, and said control circuit controls the flashing or color changing of said red light emitting diode, said green light emitting diode and said blue light emitting diode based on said synchronous signal.

3. The light emitting diode lamp as claimed in claim 1, wherein said synchronous pin receives a synchronous signal to input to said control circuit, and said control circuit controls the lighting of said light emitting diode based on said synchronous signal.

4. The light emitting diode lamp as claimed in claim 1, wherein said control circuit outputs a synchronous signal to said synchronous pin.

5. A synchronous light emitting diode lamp string comprising a plurality of light emitting diode lamps and a power adapter, said power adapter providing a DC voltage required by said light emitting diode lamps, and said light emitting diode lamp including at least a light emitting diode and a control circuit for controlling the color changing, which is characterized in:

said light emitting diode lamp has an anode pin, a cathode pin and a synchronous pin, and said synchronous pins for each said light emitting diode lamp are connected together, and said control circuit controls the color changing of said light emitting diode based on a reference signal from said synchronous pin.

6. The synchronous light emitting diode lamp string as claimed in claim 5,

wherein said light emitting diode lamp is a RGB light emitting diode lamp unit, and said RGB light emitting diode lamp unit includes a red light emitting diode, a green light emitting diode, a blue light emitting diode and said control circuit, said control circuit controls the color changing of said red light emitting diode, said green light emitting diode and said blue light emitting diode based on said reference signal.

7. The synchronous light emitting diode lamp string as claimed in claim 5,

wherein the plurality of said light emitting diode lamps are composed of a main light emitting diode lamp and a plurality of sub light emitting diode lamps, and the control circuit of said main light emitting diode lamp outputs the reference signal to said synchronous pin, and the control circuits of the sub light emitting diode lamps receive said reference signal through said synchronous pin.

8. The synchronous light emitting diode lamp string as claimed in claim 5,

wherein said power adapter outputs said reference signal to said synchronous pin of each said light emitting diode lamp, and said control circuit of each said light emitting diode lamp receives said reference signal through said synchronous pin.

9. The synchronous light emitting diode lamp string as claimed in claim 5,

wherein said power adapter outputs said reference signal, and said reference signal is a rhythm signal representing music so that said light emitting diode lamps change colors following the music rhythm.

10. The synchronous light emitting diode lamp string as claimed in claim 5,

wherein said light emitting diode lamps are serially connected, and the previous level of said synchronous pins and the next level of said synchronous pins are connected through a capacitor.

11. The synchronous light emitting diode lamp string as claimed in claim 5,

wherein the plurality of said light emitting diode lamps are connected in parallel with each other, and said light emitting diode lamps in parallel are serially connected with each other.

12. The synchronous light emitting diode lamp string as claimed in claim 5,

wherein said reference signal is a square wave with a constant frequency.

13. The synchronous light emitting diode lamp string as claimed in claim 5,

wherein the frequency of said reference signal is generated by the frequency of the AC power inputted from said power adapter.

14. A synchronous light emitting diode lamp string comprising a plurality of light emitting diode lamps and a plurality of power adapters, and each of said power adapters providing the DC voltage required by one of said light emitting diode lamps, and said light emitting diode lamp including at least a light emitting diode and a control circuit for controlling the color changing, which is characterized in:

said light emitting diode lamp unit has an anode pin, a cathode pin and a synchronous pin, and each said power adapter provides a reference signal to a synchronous pin for each said light emitting diode lamp, and said control circuit controls the color changing based on said reference signal.

15. The synchronous light emitting diode lamp string as claimed in claim 14,

wherein said light emitting diode lamp is a RGB light emitting diode lamp unit, and said RGB light emitting diode lamp unit includes a red light emitting diode, a green light emitting diode, a blue light emitting diode and said control circuit, said control circuit controls the color changing of said red light emitting diode, said green light emitting diode and said blue light emitting diode based on said reference signal.

16. The synchronous light emitting diode lamp string as claimed in claim 14,

wherein said reference signal is a signal with a constant frequency.

17. The synchronous light emitting diode lamp string as claimed in claim 14,

wherein the frequency of said reference signal is generated by the frequency of the AC power inputted from said power adapter.

18. The synchronous light emitting diode lamp string as claimed in claim 14,

wherein said power adapters are connected in parallel with each other, and said power adapters in parallel are serially connected with each other.

19. The synchronous light emitting diode lamp string comprising a plurality of light emitting diode lamps and a power adapter, said power adapter providing the DC voltage required by said light emitting diode lamps, and said light emitting diode lamp including at least a light emitting diode and a control circuit for controlling the color changing, which is characterized in:

the DC voltage has a carrier signal, and said control circuit of each said light emitting diode lamp demodulates the carrier signal from the DC voltage, and said control circuit controls the color changing of said light emitting diode according to the carrier signal.

20. The synchronous light emitting diode lamp string as claimed in claim 19,

wherein the carrier signal has a constant frequency, and said control circuit controls the color changing of said light emitting diode based on the constant frequency of the carrier signal.

21. The synchronous light emitting diode lamp string as claimed in claim 19,

wherein the carrier signal is modulated on the DC voltage by said power adapter.

22. The synchronous light emitting diode lamp string as claimed in claim 19,

wherein the plurality of said light emitting diodes include a main light emitting diode lamp and a plurality of sub light emitting diode lamps, and the control circuit of said main light emitting diode lamp modulates the carrier signal on the DC voltage, and the control circuit of said sub light emitting diode lamp demodulates the carrier signal from the DC voltage.

23. A light emitting diode lamp including at least a light emitting diode and a control circuit, which is characterized in:

said light emitting diode has an anode pin, a cathode pin, a data input pin and a data output pin, said data input pin and data output pin electrically connect with said control circuit and said control circuit control illumination of said light emitting diode based on the data from said data input pin.

24. The light emitting diode lamp as claimed in claim 23, which includes a red light emitting diode, a green light emitting diode and a blue light emitting diode, and said control circuit controls flashing type or color change of said red light emitting diode, said green light emitting diode and said blue light emitting diode based on the data from said data input pin.

25. The light emitting diode lamp as claimed in claim 23, wherein said control circuit includes a recognition block for receiving the data from said data input pin to recognize, a shift register for receiving data transmitted from said recognition block, a register for receiving complete data stored in said shift register, a driving circuit for driving said light emitting diode to illuminate based on the complete data of said register, and an encoding block for receiving an instruction from said recognition block to determine encoding the complete data of said shift register and outputting to said data output pin.

26. A synchronous light emitting diode lamp string, including a plurality of light emitting diode lamps and a power adapter, said power adapter providing a DC voltage to said light emitting diode lamp, and said light emitting diode lamp having at least a light emitting diode and a control circuit for controlling color change, which is characterized in:

said light emitting diode lamp has an anode pin, a cathode pin, a data input pin and a data output pin, said light emitting diode lamps serially connect to each other, said data input pin of one said light emitting diode lamp connects to said data input pin of next one said light emitting diode lamp, said control circuit of each said light emitting diode lamp controls illumination of said light emitting diode lamp based on the data of said data input pin.

27. The synchronous light emitting diode lamp string, wherein said power adapter installs a microprocessor and a memory, said microprocessor outputs data to said data input pin of the first one of said serially-connected light emitting diode lamps, and the output data of said microprocessor is able to be transmitted among said light emitting diode lamps.