| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting fixture in which an optical member for controlling light distribution of the light from an LED is made to correspond to the change in the preset number of Tatami mats, and whose appearance is satisfactory as illuminance unevenness hardly occurs.SOLUTION: A lighting fixture 1 comprises: a fixture body 2; LED groups 3a to 3c configured by arranging a plurality of LEDs 3 in an annular manner; and an optical member 4 for controlling light distribution of the light emitted from the LEDs 3. The LED groups 3a to 3c are provided concentrically with a central part of the fixture body 2 being the center. The optical member 4 has gutter-shaped lenses 4a for covering the LEDs 3 configuring the LED groups 3a and 3b collectively, and a plurality of single lenses 4b for individually covering each of the LEDs 3 configuring one of the LED groups 3c, and these are provided selectively by the unit of row of the LED groups. In this configuration, in the LED groups where the gutter-shaped lenses 4a are provided, the number of the LEDs 3 can be changed so that they can correspond to the change in the preset number of Tatami mats. Also, in the LED group where the single lenses 4b are provided, illuminance unevenness hardly occurs and the appearance becomes satisfactory. |
