| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device capable of improving an amount of light of wavelength-converted light of which the wavelength is converted and attaining bright illumination. <P>SOLUTION: In the lighting device 100, a wavelength conversion unit 300 includes a wavelength conversion member 302 for converting excited light into a desired wavelength-converted light, a light transmission section 328 having a function for transmitting the excited light and the wavelength-converted light, and a holding member 304 having a through-hole 320 having a function for internally holding the light transmission section. An excited light emitting end 206 of a light source 200 separated from a light conversion member is arranged in the vicinity of a light-incident section 322 as one end of the through-hole. The light conversion section is separated from the holding member, and a part of the light transmission section is arranged at a gap between the excited-light emitting end and the light conversion member, and at least a part of the light conversion member is continuously formed from the light-incident section to a light-emitting section 324 as the other end of the through-hole of the holding member. Further, the lighting device 100 has a function for thermally connecting the light conversion member and the holding member, and has a heat conductive member 308 having a heat conductivity higher than that of a light transmission member 306 arranged at the light transmission section. <P>COPYRIGHT: (C)2013,JPO&INPIT |
