| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a luminaire for having high efficiency while obtaining high rendering properties, and also economically advantageous. <P>SOLUTION: A reference value IF1 to determine a constant current passing through an LED lighting lamp 26 by the constant current control part 272 of a control part 27, and a reference value IF2 for obtaining a constant current larger than the constant current determined by this reference value IF1 is selectively set. Thereby, the LED lighting lamp 26 using a high efficiency type LED element obtains highly efficient optical output by setting this reference value IF1, and the LED lighting lamp 26 using an LED element of a high rendering property type obtains high optical output having high rendering properties by setting the reference value IF2. <P>COPYRIGHT: (C)2010,JPO&INPIT |
