| 摘要 |
A light-emitting device ( 1 ) is composed by integrating light-emitting diodes ( 2 R, 2 G, 2 B) and a drive IC ( 3 ) for driving these light-emitting diodes ( 2 R, 2 G, 2 B). The light-emitting device ( 1 ) is characterized in that the drive IC ( 3 ) has a built-in circuit for controlling the current value of each light-emitting diode ( 2 ) or the current proportions of the light-emitting diodes at constant values. The adjustment of the intensities of the light beams emitted from the light-emitting diodes can be simplified, and no outside circuits for adjustment are needed. The structure is excellent in assemblability. When a desired emission color is produced by mixing the emission colors, the adjustment for the mixing is easy, and a structure suited for enhancing the color rendering properties when a while light is emitted is provided.
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