LUMINAIRE

To provide a luminaire capable of emitting full-color light with a small number of wires.SOLUTION: A luminaire comprises: an LED lamp body 10 as a lamp body which has a first light source, a second light source, and a third light source each emitting light of one of red, green, and blue; and a lighting control part 20 which controls the lighting state of the LED lamp body 10 through two wires 21, 22 supplying electric power to the LED lamp body 10. An anode 11a side of the blue LED 11 is connected to the wire 21 and a cathode 11b side of the blue LED 11 is connected to the wire 22. A cathode 12b side of the green LED 12 is connected to the wire 21 and an anode 12a of the green LED 12 is connected to the wire 22. An anode 13a of the red LED 13 is connected to the wire 21 and a cathode 13b of the red LED 13 is connected to the wire 22 through a transistor 50 serving as a switching element. The lighting control part 20 controls the lighting state of the LED lamp body 10 according to a combination of potentials of the wire 21 and the wire 22.SELECTED DRAWING: Figure 1 【課題】少ない配線数でフルカラー発光できる照明装置を提供する。【解決手段】赤、緑、青のいずれかの色の光を発する第１光源、第２光源、及び、第３光源を有する灯体としてのＬＥＤ灯体１０と、ＬＥＤ灯体１０に電力供給を行なう２本の配線２１、２２によりＬＥＤ灯体１０の点灯状態を制御する点灯制御部２０と、を備え、青色ＬＥＤ１１のアノード１１ａ側は配線２１に接続され、青色ＬＥＤ１１のカソード１１ｂ側は配線２２に接続され、緑色ＬＥＤ１２のカソード１２ｂ側は配線２１に接続され、緑色ＬＥＤ１２のアノード１２ａ側は配線２２に接続されている。赤色ＬＥＤ１３のアノード１３ａ側は配線２１に接続され、赤色ＬＥＤ１３のカソード１３ｂ側はスイッチング素子としてのトランジスタ５０を介して配線２２に接続されている。点灯制御部２０は、配線２１及び配線２２の電位の組み合わせにより、ＬＥＤ灯体１０の点灯状態を制御する。【選択図】図１