US 2010/0244713 A1 · ILLUMINATION APPARATUS USING LIGHT EMITTING DIODE

Abstract

An illumination apparatus using a light emitting diode is directly driven by an alternating current (AC) power source, displays colors and simultaneously controls a color's brightness level. The illumination apparatus includes a power terminal unit to which an AC power source is applied; a variable current unit connected to one end of the power terminal unit, dividing current provided from the power terminal unit into a plurality of current levels, and including first, second and third variable current units controlling the plurality of divided current levels, respectively; and a light emitting unit including red, green, and blue light emitting units, respectively disposed between the first variable current unit and the other end of the power terminal unit, between the second variable current unit and the other end of the power terminal unit, and between the third variable current unit and the other end of the power terminal unit.

Claims14

Dependent claims

An illumination apparatus using a light emitting diode (LED), comprising:

a power terminal unit having one end and the other end to which an alternating current power source is applied;
a variable current unit connected to one end of the power terminal unit, dividing current provided from the power terminal unit into a plurality of current levels corresponding to a plurality of paths, and comprising first, second and third variable current units controlling the plurality of divided current levels, respectively;
and
a light emitting unit comprising a red light emitting unit disposed between the first variable current unit and the other end of the power terminal unit, a green light emitting unit disposed between the second variable current unit and the other end of the power terminal unit, and a blue light emitting unit disposed between the third variable current unit and the other end of the power terminal unit.

1 more element

An illumination apparatus using a light emitting diode (LED), comprising:

a power terminal unit having one end and the other end to which an alternating current power source is applied;
a main variable current unit connected to one end of the power terminal unit and controlling current;
an auxiliary variable current unit connected to an output port of the main variable current unit, dividing current provided from the main variable current unit into a plurality of current levels corresponding to a plurality of paths, and comprising first, second and third auxiliary variable current units controlling the plurality of divided current levels, respectively;
and
a light emitting unit comprising a red light emitting unit disposed between the first auxiliary variable current unit and the other end of the power terminal unit, a green light emitting unit disposed between the second auxiliary variable current unit and the other end of the power terminal unit, and a blue light emitting unit disposed between the third auxiliary variable current unit and the other end of the power terminal unit.

2 more elements

Dependencies are inferred from the claim text.

Illumination apparatus using light emitting diode

Life of this patent

Illumination apparatus using light emitting diode

Life of this patent

Abstract

Claims14