LIGHT SOURCE DRIVING DEVICE AND LIGHTING SYSTEM
To provide a light source driving device and a lighting system, capable of suppressing an increase in the number of dimming signal input terminals according to a type of dimming signal input to the light source drive.SOLUTION: The light source driving device includes: a plurality of signal input ter...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a light source driving device and a lighting system, capable of suppressing an increase in the number of dimming signal input terminals according to a type of dimming signal input to the light source drive.SOLUTION: The light source driving device includes: a plurality of signal input terminals to which a dimming signal of a method selected in advance from mutually different methods is input; a switching unit for switching a selection of an output destination of the dimming signal input to the signal input terminals; a determination unit for determining a method of the input dimming signal when selected as the output destination; a dimming rate conversion unit for converting a dimming signal value represented by the input dimming signal into a dimming rate based on the determination result of the method of the input dimming signal; and a drive current generation unit for generating a current for driving the light source unit according to the dimming rate.SELECTED DRAWING: Figure 1
【課題】光源駆動装置に入力される調光信号の方式の種類に応じて調光信号の入力端子の個数が増加することを抑止することが可能である光源駆動装置および照明システムを提供する。【解決手段】光源駆動装置は、互いに異なる方式のうちから予め選択された方式の調光信号が入力される複数の信号入力端子と、方式ごとに予め定められた切替状態に応じて、前記複数の信号入力端子に入力された調光信号の出力先の選択を切り替える切替部と、前記出力先として選択された場合、入力された調光信号の方式を判定する判定部と、入力された調光信号の方式の判定結果に基づいて、入力された調光信号が表す調光信号値を調光率に変換する調光率変換部と、光源部を駆動する電流を前記調光率に応じて生成する駆動電流生成部とを備える。【選択図】図１ |
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