LIGHTING APPARATUS USING WHITE-LIGHT LEDS

• US 20110248641A1
• Filed: 04/04/2011
• Published: 10/13/2011
• Est. Priority Date: 04/09/2010
• Status: Active Grant

• Current Assignee: Lumigreen Co., Ltd.
• Original Assignee: Lumigreen Co., Ltd.
• Inventors: Ryeol, Kim Soo
• Granted Patent: US 9,322,513 B2
• Time in Patent Office: Days
• US Class Current: 315/250
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21S 6/003 for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

Disclosed herein is a lighting apparatus using white-light Light-Emitting Diodes (LEDs). The lighting apparatus includes white-light LEDs, first LEDs, second LEDs, a substrate, a driving unit, and wires. The white-light LEDs emit light having a first peak value in a wavelength range of about 440 to 460 nm and a second peak value in a wavelength range of about 520 to 600 nm as a main light source. The first LEDs emit light having a third peak value in a wavelength range of about 610 to 625 nm as an auxiliary light source. The second LEDs emit light having a fourth peak value in a wavelength range of about 492 to 500 nm as an auxiliary light source. The substrate allows the LEDs to be disposed thereon. The driving unit drives the LEDs. The wires connect the substrate to the driving unit.

Claims

1. A lighting apparatus using white-light Light-Emitting Diodes (LEDs), comprising:

white-light LEDs for emitting light having a first peak value in a wavelength range of about 440 to 460 nm and a second peak value in a wavelength range of about 520 to 600 nm as a main light source;

first LEDs for emitting light having a third peak value in a wavelength range of about 610 to 625 nm as an auxiliary light source in order to improve color rendering;

second LEDs for emitting light having a fourth peak value in a wavelength range of about 492 to 500 nm as an auxiliary light source in order to improve sharpness;

a substrate for allowing the white-light LEDs, the first LEDs, and the second LEDs to be disposed thereon;

a driving unit for driving the white-light LEDs, the first LEDs, and the second LEDs; and

wires for connecting the substrate to the driving unit.

2. The lighting apparatus as set forth in claim 1, wherein the lighting apparatus is a movable lighting apparatus.

3. The lighting apparatus as set forth in claim 2, further comprising an anti-glare filter.

4. The lighting apparatus as set forth in claim 1, wherein the lighting apparatus is a stationary lighting apparatus.

5. An LED lamp using white-light LEDs, comprising:

a base configured to receive Alternating Current (AC) power;

white-light LEDs disposed on a lower surface of the LED lamp, and configured to emit light having a first peak value in a wavelength range of about 440 to 460 nm and a second peak value in a wavelength range of about 520 to 600 nm as a main light source;

first LEDs disposed on the lower surface of the LED lamp, and configured to emit light having a third peak value in a wavelength range of about 610 to 625 nm as an auxiliary light source in order to improve color rendering;

second LEDs disposed on the lower surface of the LED lamp, and configured to emit light having a fourth peak value in a wavelength range of about 492 to 500 nm as an auxiliary light source in order to improve sharpness;

a driving unit configured to drive the white-light LEDs, the first LEDs, and the second LEDs; and

a substrate configured such that terminals of the white-light LEDs, the first LEDs and the second LEDs and the driving unit are disposed thereon and AC power is supplied by the base thereto.