LIGHT EMITTING DIODE ILLUMINATION DEVICE

• US 20150028755A1
• Filed: 06/20/2014
• Published: 01/29/2015
• Est. Priority Date: 07/26/2013
• Status: Abandoned Application

• Current Assignee: Advanced Optoelectronic Technology, Inc.
• Original Assignee: Advanced Optoelectronic Technology, Inc.
• Inventors: CHANG, CHUNG-MIN, CHANG-CHIEN, CHIEN-LIN, HU, HSUEN-FENG, WU, YA-TING, YANG, ZHENG-HUA
• Application Number:
  US14/310,543
• Publication Number:
  US 20150028755A1
• Time in Patent Office: Days
• US Class Current: 315/192
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 45/46 having LEDs disposed in parallel lines

Abstract

An LED illumination device includes an LED package and a switch electrically connecting the LED package. The LED package includes a first lamp group and a second lamp group installed in parallel. A direction of the current of the first lamp group is inverted to that of the second lamp group. Different contact parts of the switch respectively connect a power source to make the first lamp group and the second lamp group on or off respectively.

Claims

1. An LED (light emitting diode) illumination device comprising:

an LED package, the LED package comprising a first lamp group and a second lamp group installed in parallel; and

a switch electrically connected to the LED package;

wherein a direction of a current of the first lamp group is inverted to that of the second lamp group, and different contact parts of the switch respectively connect to a power source to turn the first lamp group and the second lamp group on or off respectively.

2. The LED illumination device of claim 1, wherein the first lamp group comprises a plurality of first LEDs installed in series.

3. The LED illumination device of claim 2, wherein a first slide rheostat connects the first LEDs in series.

4. The LED illumination device of claim 2, wherein the second lamp group comprises a plurality of second LEDs installed in series.

5. The LED illumination device of claim 4, wherein a second slide rheostat connects the second LEDs in series.

6. The LED illumination device of claim 1, wherein the minimal light intensity of the first lamp group is equal to or larger than 20% of the largest light intensity of the first lamp group.

7. The LED illumination device of claim 6, wherein the largest light intensity of the second lamp group is less than 20% of the largest light intensity of the first lamp group.

8. The LED illumination device of claim 4, wherein each first LED of the first lamp group has a first color temperature, and each second LED of the second lamp group has a second color temperature

9. The LED illumination device of claim 4, wherein a part of the first LEDs has a first color temperature, and another first LEDs of the first lamp group has a third color temperature, and each second LED of the second lamp group has a second color temperature

10. The LED illumination device of claim 1, wherein each first LED of the first lamp group has a first color temperature, and a part of the second LED has a second lamp group has a second color temperature, and another second LED has a fourth color temperature.