LIGHT SOURCE DEVICE

WIPO Patent Application WO/2012/008132

A1

Disclosed is a light source device that is a globe-type light source that uses a laser diode (LD) and that obtains white light emission with a high light flux and is almost uniform in all directions. The light source device has a dual-tube structure comprising a transparent light-emitting tube (11) and a transparent outer tube (15). The light-emitting tube (11) is sealed (112) and the tip of the straight tube (111) is rounded. A fluorescent material layer (12) is formed on an inner surface of a light-emitting region (11a) in the light-emitting tube (11) in the vicinity of the seal (112) and a reflective film (13) is formed on an inner surface of a straight tube region (11b) which is a non-light-emitting section of the light-emitting tube (11). The outer tube (15) is frosted (151). The LD (16) with suppressed temperature increase and attached to a heat radiator (17) is disposed on the release end section of the light-emitting tube (11) and the fluorescent material emits light by the LD (16) radiating laser light on the fluorescent material layer (12). This enables white light emission that has high light flux and is almost uniform in all direction to be obtained while using an LD.

TAKEDA YUJI (JP)

PCT/JP2011/003941

January 19, 2012

July 08, 2011

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HARISON TOSHIBA LIGHTING CORP (JP)
TAKEDA YUJI (JP)

F21S2/00; F21V3/04; F21V29/00; H01S5/022; F21Y101/02

JP2003515899A	2003-05-07
JP3148997U	2009-03-05
JP2010153101A	2010-07-08
JP2008135210A	2008-06-12
JP2009170114A	2009-07-30
JP2003031005A	2003-01-31
JP2003347595A	2003-12-05
JP2001156338A	2001-06-08

AMAGI INTERNATIONAL PATENT LAW OFFICE (JP)
Patent business corporation Amagi international patent firm (JP)

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