| 摘要 |
PROBLEM TO BE SOLVED: To achieve a uniform planar light source in which luminance and color temperature are constant, which has no luminance unevenness and color unevenness, by a cheap configuration without involving huge cost increase.SOLUTION: A planar luminaire includes: a planar light source comprising a first housing including a plurality of light emitting elements of a single color or a plurality of colors; a second housing for including the planar light source; a light source drive circuit including a plurality of light source drive units for driving and controlling the light emitting elements belonging to each light emitting region regarding a plurality of light emitting regions in which a light emitting surface formed by a plurality of light emitting elements is divided; a calculation unit for calculating a drive condition of the plurality of light source drive units; and a storage unit for storing setting information. At least one first temperature sensor is provided inside the first housing, and at least one second temperature sensor is provided outside the first housing and inside the second housing. The calculation unit corrects the drive condition of the plurality of light source drive units on the basis of at least a measured value of the first temperature sensor, a measured value of the second temperature sensor and the setting information of the storage unit. |
