Title:
FLUORESCENT LIGHT SOURCE DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/141376
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a fluorescent light source device wherein it is possible to achieve high light-emission efficiency over a long period of time, and an increase in the temperature of a wavelength conversion member is inhibited even when the wavelength conversion member is irradiated with excitation light having a high excitation energy. This fluorescent light source device is provided with a wavelength conversion member which is disposed on a substrate and emits fluorescent light by means of excitation light, the fluorescent light source device being characterized in that a liquid refrigerant circulation mechanism for circulating a light-permeable liquid refrigerant at least along the excitation light incident surface of the wavelength conversion member is provided, and a cover layer formed from a light-permeable material and for covering the excitation light incident surface is provided to the wavelength conversion member.
Inventors:
INOUE MASAKI (JP)
KITAMURA SEIJI (JP)
KITAMURA SEIJI (JP)
Application Number:
PCT/JP2015/054734
Publication Date:
September 24, 2015
Filing Date:
February 20, 2015
Export Citation:
Assignee:
USHIO ELECTRIC INC (JP)
International Classes:
F21S2/00; F21V3/00; F21V9/16; F21V29/502; F21V29/56; G02B5/08; F21Y101/02
Foreign References:
| JP2011243375A | 2011-12-01 | |||
| JP2011198560A | 2011-10-06 | |||
| JP2013030720A | 2013-02-07 |
Attorney, Agent or Firm:
OHI, Masahiko (JP)
Masahiko Oi (JP)
Masahiko Oi (JP)
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