PLANAR LIGHTING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a planar lighting apparatus in which an optional emission area can be obtained with a simple structure.

SOLUTION: The planar lighting apparatus having a plurality of planar light sources 21 and a DC power supply circuit 4 is arranged in a row so that power feeding portions 22a on each of high potential side of the planar light sources 21 may be on one end side and the power feeding portions 22b on low potential side may be on the other end side. The power feeding portions 22a on each one end side of the planar light sources 21 are connected to a power feeding line 7a. The power feeding portions 22b on each other end side of the planar light sources 21 have a diode 23 and a belt-shape electrode part 24 connected in series through a conductive wire 25 between mutually adjoining parts, and each of the belt-shape electrode parts 24 is arranged aligned in a column shape. The belt-shape electrode parts 24 are connected to a power feeding line 7b through a contactor 6 which is held in free contact and movement. By this structure, the planar light sources 21 can be made to emit light by an optional area by adjusting the position of the contactor 6 without using a sensor to make energy saving.

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