Light-emitting diode light source and light-emitting diode lamp

• US 8,421,367 B2
• Filed: 10/24/2007
• Issued: 04/16/2013
• Est. Priority Date: 08/27/2007
• Status: Expired due to Fees

• Current Assignee: GE Investment Co., Ltd.
• Original Assignee: GE Investment Co., Ltd.
• Inventors: Tsai, Wen-Kuei, Chang, Sheng-ho, Wang, Chun-Chien
• Primary Examiner(s): Nguyen, Danny
• Application Number:
  US11/923,645
• Publication Number:
  US 20090058317A1
• Time in Patent Office: 2,001 Days
• Field of Search: 307/1, 307/64, 307/66, 315/195, 315/291, 315/307
• US Class Current: 315/291
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21V 23/009 the casing being inside the housing of the lighting device
• CPC Class Codes: F21V 3/04 characterised by materials, surface treatments or coatings
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 47/185 via power line carrier transmission

Abstract

A light-emitting diode (LED) light source suitable for being electrically connected with a power line is provided. The LED light source includes an LED array, a power line communication (PLC) unit and a current control unit. The PLC unit is electrically connected with the power line, and the current control unit is electrically connected with the LED array and the PLC unit.

Claims

1. A light-emitting diode (LED) light source suitable for being electrically connected with a power line, the LED light source comprising:

an LED array;

a power line communication (PLC) unit electrically connected with the power line, the PLC unit receiving a control signal transmitted with electric power through the power line, wherein the PLC unit comprises a high definition PLC unit (HD-PLC unit);

an image-capturing apparatus electrically connected with the PLC unit; and

a current control unit electrically connected with the power line, the LED array and the PLC unit,

wherein the PLC unit controls the current control unit to selectively output driving and over-driving current to the LED array according to the control signal, so as to control the luminance of the LED array.

2. The LED light source according to claim 1, wherein the LED array comprises:

a carrier; and

a plurality of LEDs arranged in an array on the carrier and electrically connected with the carrier.

3. The LED light source according to claim 2, wherein the carrier comprises a circuit board.

4. The LED light source according to claim 3, wherein the circuit board comprises a metal core printed circuit board.

5. The LED light source according to claim 3, wherein the PLC unit is integrated in the circuit board.

6. The LED light source according to claim 3, wherein the PLC unit is a power line communication chip electrically connected with the circuit board.

7. The LED light source according to claim 3, wherein the current control unit is integrated in the circuit board.

8. The LED light source according to claim 2, wherein the LEDs comprise surface mounted device (SMD) type packages or pin through hole (PTH) type packages.

9. The LED light source according to claim 1, further comprising a wireless communication unit electrically connected with the PLC unit.

10. The LED light source according to claim 1, wherein the PLC unit comprises an Ethernet network port, and the image-capturing apparatus comprises an internet protocol camera (IP camera) electrically connected with the Ethernet network port.

11. An LED amp suitable for being electrically connected with a power line, the LED lamp comprising:

an LED light source wherein the LED light source includes;

an LED array;

a power line communication (PLC) unit electrically connected with the power line, the PLC unit receiving a control signal transmitted with electric power through the power line, wherein the PLC unit comprises a high definition PLC unit (HD-PLC unit);

an image-capturing apparatus electrically connected with the PLC unit; and

a current control unit electrically connected with the power line, the LED array and the PLC unit,

wherein the PLC unit controls the current control unit to selectively output driving and over-driving current to the LED array according to the control signal, so as to control the luminance of the LED array;

a housing;

a plastic lampshade, wherein the housing and the lampshade are provided for accommodating the LED array, the PLC unit and the current control unit; and

a photocatalyst layer coated on the plastic lampshade.

12. The LED lamp according to claim 11, wherein the LED array comprises:

a carrier; and

a plurality of LEDs arranged in an array on the carrier and electrically connected with the carrier.

13. The LED lamp according to claim 12, wherein the carrier comprises a circuit board.

14. The LED lamp according to claim 13, wherein the circuit board comprises a metal core printed circuit board.

15. The LED lamp according to claim 13, wherein the PLC unit is integrated in the circuit board.

16. The LED lamp according to claim 13, wherein the PLC unit is a PLC chip electrically connected with the circuit hoard.

17. The LED lamp according to claim 13, wherein the current control unit is integrated in the circuit hoard.

18. The LED lamp according to claim 12, wherein the LEDs comprise SMD type packages or PTH type packages.

19. The LED lamp according to claim 11, further comprising a wireless communication unit electrically connected with the PLC unit.

20. The LED tamp according to claim 11, wherein the PLC unit comprises an Ethernet network port, and the image-capturing apparatus comprises an IP camera electrically connected with the Ethernet network port.