LED illumination device and illumination module using the same

• US 7,976,188 B2
• Filed: 04/02/2008
• Issued: 07/12/2011
• Est. Priority Date: 12/07/2007
• Status: Expired due to Fees

• Current Assignee: Cooler Master Development Corporation
• Original Assignee: Cooler Master Co. Ltd.
• Inventors: Peng, Chang-Hung
• Primary Examiner(s): DZIERZYNSKI, EVAN P
• Application Number:
  US12/061,115
• Publication Number:
  US 20090147510A1
• Time in Patent Office: 1,196 Days
• Field of Search: 362/97.3, 362/240, 362/249.02, 362/311.02, 362/373, 362/365, 362/221, 362/646
• US Class Current: 362/249.02
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: F21V 21/005 for several lighting devices in an end-to-end arrangement, i.e. light tracks
• CPC Class Codes: F21V 23/00 Arrangement of electric circuit elements in or on lighting devices characterised by cooling arrangements F21V29/508
• CPC Class Codes: F21V 29/51 using condensation or evaporation of a fluid, e.g. heat pipes
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/717 using split or remote units thermally interconnected, e.g. by thermally conductive bars or heat pipes
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F28D 15/0275 Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores

Abstract

A LED illumination device includes a base plate, a plurality of LEDs, a driving circuit and a control circuit. The plurality of LEDs, the driving circuit and the control circuit are arranged on a surface of the base plate and electrically connected to each other. The control circuit is configured for controlling the driving circuit to output a driving power. The plurality of LEDs emit light based upon the driving power. Thus the base plate, the LEDs, the driving circuit and the control circuit are integrated in a same device for simplifying the whole structure thereof to be easily assembled.

Claims

1. A light emitting diode (LED) illumination lamp device, comprising:

a base plate;

a circuit board arranged on a first surface of the base plate;

a heat-dissipating body arranged on a second surface opposite to the first surface of the base plate, the heat-dissipating body including a plurality of heat sinks, each of the plurality of heat sinks having a through hole defined therein, a groove being defined on the second surface, and a heat pipe having a heat-absorbing portion being contained in the groove and a heat-dissipating portion passing through the through hole of each of the plurality of heat sinks;

a plurality of LEDs;

a driving circuit; and

a control circuit;

wherein the plurality of LEDs, the driving circuit and the control circuit are arranged on the circuit board and electrically connected to each other, the control circuit is configured for controlling the driving circuit to output a driving power, and the plurality of LEDs emitting light based upon the driving power,

thereby heat generated from the LEDs, the driving circuit and the control circuit are transmitted to the base plate and absorbed by the heat-absorbing portion, then the heat are transmitted to the heat sinks through the heat-dissipating portion and dissipated by the heat sinks,

wherein the circuit board is composed of a first circuit board and a second circuit board, the plurality of LEDs being arranged on the first circuit board, and the driving circuit and the control circuit being arranged on the second circuit board.

2. The LED illumination lamp device as claimed in claim 1, further comprising a lampshade configured for covering the plurality of LEDs, the driving circuit and the control circuit on the base plate.

3. The LED illumination lamp device as claimed in claim 2, further comprising a waterproof gasket arranged between the lampshade and the base plate.

4. The LED illumination lamp device as claimed in claim 1, wherein the circuit board is composed of the first circuit board, the second circuit board and a third circuit board, the plurality of LEDs being arranged on the first circuit board, the driving circuit being arranged on the second circuit board, and the control circuit being arranged on the third circuit board.

5. The LED illumination lamp device as claimed in claim 1, further comprising a fixed arm, one end of the fixed arm being arranged and fixed on the base plate, and another opposite end of the fixed arm having a through hole defined therein.

6. An illumination module, comprising:

a plurality of light emitting diode (LED) illumination lamp devices arranged in a longitudinal direction, each of the plurality of LED illumination devices including;

a base plate,

a circuit board arranged on a first surface of the base plate,

a heat-dissipating body arranged on a second surface opposite to the first surface of the base plate, the heat-dissipating body including a plurality of heat sinks, each of the plurality of heat sinks having a through hole defined therein, a groove being defined on the second surface, and a heat pipe having a heat-absorbing portion being contained in the groove and a heat-dissipating portion passing through the through hole of each of the plurality of heat sinks,

a plurality of LEDs, a driving circuit and a control circuit, the plurality of LEDs, the driving circuit and the control circuit being arranged on the circuit board and electrically connected to each other, the control circuit being configured for controlling the driving circuit to output a driving power, and the plurality of LEDs emitting light based upon the driving power,

thereby heat generated from the LEDs, the driving circuit and the control circuit are transmitted to the base plate and absorbed by the heat-absorbing portion, then the heat are transmitted to the heat sinks through the heat-dissipating portion and dissipated by the heat sinks;

two fixed arms arranged respectively on two ends of the base plate of each of the plurality of LED illumination lamp devices; and

a connecting unit arranged between two adjacent LED illumination lamp devices to connect two corresponding fixed arms thereof, such that the plurality of LED illumination lamp devices are arranged in series,

wherein the circuit board is composed of a first circuit board and a second circuit board, the plurality of LEDs are arranged on the first circuit board, and the driving circuit and the control circuit are arranged on the second circuit board.

7. The illumination module as claimed in claim 6, wherein each of the plurality of LED illumination lamp devices further includes a lampshade configured for covering the plurality of LEDs, the driving circuit and the control circuit on the base plate.

8. The illumination module as claimed in claim 7, wherein each of the plurality of LED illumination lamp devices further includes a waterproof gasket arranged between the lampshade and the base plate.

9. The illumination module as claimed in claim 6, wherein the circuit board is composed of the first circuit board, the second circuit board, and a third circuit board, the plurality of LEDs are arranged on the first circuit board, and the driving circuit is arranged on the second circuit board and the control circuit is arranged on the third circuit board.

10. The illumination module as claimed in claim 6, wherein the plurality of LED illumination devices are arranged in a longitudinal direction, the connecting unit having a plurality of screws and a supporting plate, the supporting plate is arranged above the plurality of fixed arms and fixed on the plurality of fixed arms.

11. The illumination module as claimed in claim 6, wherein the plurality of LED illumination devices are arranged in a transverse direction, the connecting unit having a plurality of screws and a supporting plate, the supporting plate is configured for fixing the plurality of fixed arms thereon by the plurality of screws, such that plurality of LED illumination devices are arranged in parallel.

12. The illumination module as claimed in claim 6, wherein each of the plurality of fixed arm is a Z-shaped plate.