| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow adjustment of light distribution with a luminaire installed, in a luminaire provided with an LED unit with an LED element mounted therein and a casing for housing the LED unit. <P>SOLUTION: The casing 3 includes: an opening 31 formed on the side facing to a light emission surface 2a of the LED unit 2; and a groove part 32 spirally formed on the inside wall surface of the casing 3 from the entrance side through the depth side of the opening 31 for movably holding the LED unit 2 from the entrance side through the depth side of the opening 31 by engaging with projection parts 24 of the LED unit 2. Since the LED unit 2 is movably held from the entrance side through the depth side of the opening 31 in the casing 3, light distribution can be adjusted even after luminaire installation by adjusting the relative position of the LED unit 2 with respect to the casing 3. <P>COPYRIGHT: (C)2007,JPO&INPIT |
