LIGHT-EMITTING DIODE LIGHTING DEVICE WITH ADJUSTABLE COLOR RENDERING INDEXES
First Claim
1. A light-emitting diode (LED) lighting device, comprising:
- a first luminescent device driven by a rectified alternative-current (AC) voltage for providing light of a first color according to first current;
a second luminescent device coupled in series to the first luminescent device and driven by the rectified AC voltage for providing light of the first color according to second current;
a third luminescent device driven by the rectified AC voltage for providing light of a second color according to third current, wherein the second color is different from the first color;
a first current controller configured to regulate the first current according to a first current setting, the first current controller comprising;
a first pin coupled to the first end of the first luminescent device;
a second pin; and
a third pin coupled to the second end of the first luminescent device;
a second current controller configured to regulate the second current according to a second current setting, the second current controller comprising;
a first pin coupled to the second luminescent device;
a second pin coupled to the rectified AC voltage; and
a third pin; and
a third current controller configured to regulate the third current according to a third current setting, the third current controller comprising;
a first pin coupled to the third luminescent device; and
a second pin.
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Accused Products
Abstract
An LED lighting device includes first through third luminescent devices and first through third current controllers. The first and second luminescent devices are driven by a rectified AC voltage for providing light of a first color. The third luminescent device is driven by the rectified AC voltage for providing light of a second color different from the first color. The first through third current controllers are configured to regulate the current flowing through the first through third current controllers according to a first current setting, a second current setting and a third current setting, respectively. The color rendering index of the LED lighting device can thus be adjusted flexibly.
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Citations
11 Claims
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1. A light-emitting diode (LED) lighting device, comprising:
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a first luminescent device driven by a rectified alternative-current (AC) voltage for providing light of a first color according to first current; a second luminescent device coupled in series to the first luminescent device and driven by the rectified AC voltage for providing light of the first color according to second current; a third luminescent device driven by the rectified AC voltage for providing light of a second color according to third current, wherein the second color is different from the first color; a first current controller configured to regulate the first current according to a first current setting, the first current controller comprising; a first pin coupled to the first end of the first luminescent device; a second pin; and a third pin coupled to the second end of the first luminescent device; a second current controller configured to regulate the second current according to a second current setting, the second current controller comprising; a first pin coupled to the second luminescent device; a second pin coupled to the rectified AC voltage; and a third pin; and a third current controller configured to regulate the third current according to a third current setting, the third current controller comprising; a first pin coupled to the third luminescent device; and a second pin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification