LED LIGHT BULB - TOSHIBA KK

Title:

LED LIGHT BULB

Document Type and Number:

WIPO Patent Application WO/2012/029305

Kind Code:

A1

Abstract:

An LED light bulb (1) is provided with an LED module (2), a base portion (3) on which the LED module (2) is disposed, and a globe (4) attached to the base portion (3). The LED module (2) is provided with an LED chip (8) mounted on a substrate (7) and emitting ultra-violet to violet light. A lighting circuit and a base (6) are disposed on the base portion (3). A fluorescent film (9) emitting white light by absorbing the ultra-violet to violet light emitted from the LED chip is disposed on the inner surface of the globe (4). When the body color of the fluorescent film (9) is represented by the L*a*b* color space, the a* coordinate ranges from -10 to +10, the b* coordinate ranges from 0 to +30, and the L* coordinate is +40 or more.

Inventors:

OOYA YASUMASA (JP)
YAMAKAWA MASAHIKO (JP)
SHIRAKAWA YASUHIRO (JP)
NAKAGAWA KATSUTOSHI (JP)

Application Number:

PCT/JP2011/004863

Publication Date:

March 08, 2012

Filing Date:

August 31, 2011

Export Citation:

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Assignee:

TOSHIBA KK (JP)
TOSHIBA MATERIALS CO LTD (JP)
OOYA YASUMASA (JP)
YAMAKAWA MASAHIKO (JP)
SHIRAKAWA YASUHIRO (JP)
NAKAGAWA KATSUTOSHI (JP)

International Classes:

F21S2/00; F21V3/00; F21V3/04; H01L33/50; F21Y101/02

Foreign References:

JP2007081234A	2007-03-29
JP2009040918A	2009-02-26
JP2010027725A	2010-02-04
JP2002359404A	2002-12-13
JP2001172623A	2001-06-26
JP2000109826A	2000-04-18
JPH08283712A	1996-10-29
JP2010040364A	2010-02-18
JP2010016223A	2010-01-21
JP2005005546A	2005-01-06
JP2009170114A	2009-07-30

Other References: