| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light-emitting device which can suppress decline in emission efficiency by temperature rise of a phosphor at the time of light-emitting and thermal degradation of color converting members. <P>SOLUTION: The light-emitting device includes two color converting members 30 and 40 arranged in concentricity focusing on an LED chip 10 at a mounting surface side of the LED chip 10 on a mounting board 20. Each of color converting members 30 and 40 is arranged so that the first regions 31 and 41 which contain a phosphor, and the second regions 32 and 42 which do not contain a phosphor may line alternately. The first regions 31 and 41 and the second regions 32 and 42 of each are arranged so that the first region 31 of the first color converting member 30 and the first region 41 of the second color converting member 40 may not overlap, and the second region 32 of the first color converting member 30 and the second region 42 of the second color converting member 40 may not overlap, seeing from the LED chip 10. <P>COPYRIGHT: (C)2009,JPO&INPIT |
