| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device using a light guide plate with an LED as a light source, although it is a lighting device but its light distribution characteristics can be easily changed without exchanging for every fixture. <P>SOLUTION: The LED lighting device includes a first light source unit 14 having a light guide plate and an LED array fitted on an end surface of the light guide plate, and having a structure emitting light incident from the LED array to the end surface from one of main surfaces of the light guide plate, a second light source unit 16 having a basic structure same as the above, and having different light distribution characteristics from the first light source unit 14, and a lighting fixture 12 capable of attaching a plurality of the light source units 14, 16, respectively, those 14, 16 are fitted at the lighting fixture 12 in free detachment. <P>COPYRIGHT: (C)2010,JPO&INPIT |
