LIGHTING LAMP

• US 20140049178A1
• Filed: 11/23/2012
• Published: 02/20/2014
• Est. Priority Date: 08/15/2012
• Status: Active Grant

• Current Assignee: National Taiwan University of Science and Technology
• Original Assignee: National Taiwan University of Science and Technology
• Inventors: HU, Neng-chung, WU, Chin-chuan, WU, Wei-zhen
• Granted Patent: US 9,119,237 B2
• Time in Patent Office: Days
• US Class Current: 315/210
• CPC Class Codes: H05B 45/20 Controlling the colour of the light

Abstract

The present invention discloses a lighting lamp (10), is used for emitting a plurality of lights with different color temperatures, and color rendering indexes of all the lights are larger than 90. The lighting lamp (10) includes a combination (100) of light sources and a driving module (200). The combination (100) of the light sources includes four LEDs with specific wavelengths. The driving module (200) is utilized to drive the LEDs to illuminate and to control energy distribution of luminous energy for the first, second, third and fourth LEDs, thereby dynamically adjusting to show the light with 9000K, 12000K and eight color temperatures defined by the ENERGY STAR.

Claims

1. A lighting lamp for emitting a plurality of lights with different color temperatures, the lighting lamp comprising:

a combination of light sources consisting essentially of;

a first LED whose main wavelength ranges from 447 nanometers to 463 nanometers;

a second LED whose main wavelength ranges from 520 nanometers to 540 nanometers;

a third LED whose main wavelength ranges from 588 nanometers to 605 nanometers; and

a fourth LED whose main wavelength ranges from 623 nanometers to 670 nanometers; and

a driving module electrically, coupled to the combination of the light sources, for driving the LEDs to illuminate and controlling energy distribution of luminous energy for the first, second, third and fourth LEDs;

wherein color rendering indexes of the lights emitted from the lighting lamp are larger than 90.

2. The lighting lamp of claim 1, wherein the color temperature comprises 2700K, 3000K, 3500K, 4000K, 4500K, 5000K, 5700K, 6500K, 9000K, and 12000K.

3. The lighting lamp of claim 2, wherein the energy distribution of the luminous energy for the first LED ranges from 0.061 to 1;

the energy distribution of the luminous energy for the second LED ranges from 0.124 to 1;

the energy distribution of the luminous energy for the third LED ranges from 0.220 to 1;

the energy distribution of the luminous energy for the fourth LED ranges from 0.178 to 1.

4. The lighting lamp of claim 2, wherein while the light with color temperature of 2700K is emitted, the energy distribution of the luminous energy for the first LED ranges from 0.061 to 0.435;

the energy distribution of the luminous energy for the second LED ranges from 0.124 to 0.925;

the energy distribution of the luminous energy for the third LED ranges from 0.220 to 1;

the energy distribution of the luminous energy for the fourth LED ranges from 0.755 to 1.

5. The lighting lamp of claim 2, wherein while the light with color temperature of 3000K is emitted, the energy distribution of the luminous energy for the first LED ranges from 0.087 to 0.569;

the energy distribution of the luminous energy for the second LED ranges from 0.144 to 1;

the energy distribution of the luminous energy for the third LED ranges from 0.229 to 1;

the energy distribution of the luminous energy for the fourth LED ranges from 0.672 to 1.

6. The lighting lamp of claim 2, wherein while the light with color temperature of 3500K is emitted, the energy distribution of the luminous energy for the first LED ranges from 0.076 to 0.799;

the energy distribution of the luminous energy for the second LED ranges from 0.132 to 1;

the energy distribution of the luminous energy for the third LED ranges from 0.229 to 1;

the energy distribution of the luminous energy for the fourth LED ranges from 0.560 to 1.

7. The lighting lamp of claim 2, wherein while the light with color temperature of 4000K is emitted, the energy distribution of the luminous energy for the first LED ranges from 0.193 to 0.977;

the energy distribution of the luminous energy for the second LED ranges from 0.212 to 1;

the energy distribution of the luminous energy for the third LED ranges from 0.252 to 1;

the energy distribution of the luminous energy for the fourth LED ranges from 0.488 to 1.

8. The lighting lamp of claim 2, wherein while the light with color temperature of 4500K is emitted, the energy distribution of the luminous energy for the first LED ranges from 0.253 to 1;

the energy distribution of the luminous energy for the second LED ranges from 0.244 to 1;

the energy distribution of the luminous energy for the third LED ranges from 0.263 to 1;

the energy distribution of the luminous energy for the fourth LED ranges from 0.424 to 1.

9. The lighting lamp of claim 2, wherein while the light with color temperature of 5000K is emitted, the energy distribution of the luminous energy for the first LED ranges from 0.314 to 1;

the energy distribution of the luminous energy for the second LED ranges from 0.267 to 1;

the energy distribution of the luminous energy for the third LED ranges from 0.268 to 1;

the energy distribution of the luminous energy for the fourth LED ranges from 0.391 to 1.

10. The lighting lamp of claim 2, wherein while the light with color temperature of 5700K is emitted, the energy distribution of the luminous energy for the first LED ranges from 0.384 to 1;

the energy distribution of the luminous energy for the second LED ranges from 0.306 to 1;

the energy distribution of the luminous energy for the third LED ranges from 0.279 to 0.949;

the energy distribution of the luminous energy for the fourth LED ranges from 0.356 to 1.

11. The lighting lamp of claim 2, wherein while the light with color temperature of 6500K is emitted, the energy distribution of the luminous energy for the first LED ranges from 0.459 to 1;

the energy distribution of the luminous energy for the second LED ranges from 0.333 to 1;

the energy distribution of the luminous energy for the third LED ranges from 0.284 to 0.885;

the energy distribution of the luminous energy for the fourth LED ranges from 0.313 to 1.

12. The lighting lamp of claim 2, wherein while the light with color temperature of 9000K is emitted, the energy distribution of the luminous energy for the first LED ranges from 0.693 to 1;

the energy distribution of the luminous energy for the second LED ranges from 0.434 to 0.888;

the energy distribution of the luminous energy for the third LED ranges from 0.263 to 0.644;

the energy distribution of the luminous energy for the fourth LED ranges from 0.205 to 1.

13. The lighting lamp of claim 2, wherein while the light with color temperature of 12000K is emitted, the energy distribution of the luminous energy for the first LED ranges from 0.759 to 1;

the energy distribution of the luminous energy for the second LED ranges from 0.455 to 0.828;

the energy distribution of the luminous energy for the third LED ranges from 0.239 to 0.579;

the energy distribution of the luminous energy for the fourth LED ranges from 0.178 to 1.

14. The lighting lamp of claim 1, wherein the driving module is a micro processor, and the micro processor synchronously outputs four pulse width modulation signals to the LEDs, respectively.