| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an LED lighting system capable of providing human eye-friendly and well-balanced irradiation light. <P>SOLUTION: This LED lighting system 1 includes two or more types of LED units 2, 3 different in color temperature of emitted light. The respective LED units 2, 3 have each an LED light emitting element 24 and a phosphor arranged on its emission surface. The respective LED units 2, 3 adjacent to each other are arranged so that the respective directivity angles thereof partially overlap each other. The two types of LED units 2, 3 preferably have two kinds of emission colors such as white and warm white. The emission quantity of each of the two types of LED units 2 and 3 is controlled by a control device 7. <P>COPYRIGHT: (C)2009,JPO&INPIT |
