LED fluorescent lamp
AssigneesKumho Electric Inc., Myung Koo Park
InventorMyung Koo Park
Life of this patent
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Abstract
A light-emitting diode (LED) fluorescent lamp which can replace a typical fluorescent lamp is provided. The LED fluorescent lamp includes an LED array including a plurality of LEDs connected in series; first through fourth connection pins; first through fourth capacitors connected to the first through fourth connection pins, respectively; a first diode having an commonly connected to second ends of the first and third capacitors and a cathode connected to a first end of the LED array; a second diode having an anode connected to a second end of the LED array and a cathode commonly connected to second ends of the second and fourth capacitors. The LED fluorescent lamp can replace a typical fluorescent lamp without a requirement of the installation of additional equipment or the change of wiring.
Claims10
A light-emitting diode (LED) lamp comprising:
- four external connection pins having at least two connection pins connected to an electronic or magnetic fluorescent lamp ballast;
- an LED array including a plurality of LEDs in series;
- one or more capacitors connected between the LED array and the external connection pins, the one or more capacitors varying an impedance of the electronic or magnetic fluorescent lamp ballast connected to the LED lamp through the external connection pins;
- and
- one or more diodes, each of said one or more diodes being connected in parallel with corresponding one of said one or more capacitors.
An LED lamp comprising:
- an LED array including a plurality of LEDs connected in series;
- first through fourth connection pins;
- first through fourth capacitors, each of first ends of the first through fourth capacitors connected to the first through fourth connection pins, respectively;
- a first diode having an anode connected to a second end of the first capacitor and a cathode connected to a first end of the led array;
- a second diode having an anode connected to a second end of the LED array and a cathode connected to a second end of the second capacitor;
- a third diode having an anode connected to a second end of the third capacitor and a cathode connected to the first end of the led array;
- a fourth diode having an anode connected to the second end of the LED array and a cathode connected to a second end of the fourth capacitor;
- a fifth diode having an anode connected to the second end of the LED array and a cathode connected to the second end of the first capacitor;
- and
- a sixth diode having an anode connected to the second end of the second capacitor and a cathode connected to the first end of the LED array.
A light-emitting diode (LED) lamp comprising:
- four external connection pins;
- an LED array including a plurality of LEDs in series;
- one or more capacitors connected between the LED array and the external connection pins;
- and
- one or more diodes, each of said one or more diodes being connected in parallel with corresponding one of said one or more capacitors.
Dependencies are inferred from the claim text.