DISCHARGE LAMP LIGHTING SYSTEM
PROBLEM TO BE SOLVED: To provide a discharge lamp lighting system capable of making a voltage value applied to a discharge lamp constant.SOLUTION: A discharge lamp lighting system includes: a power supply section supplying an AC current to a discharge lamp; a voltage detection section detecting a la...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a discharge lamp lighting system capable of making a voltage value applied to a discharge lamp constant.SOLUTION: A discharge lamp lighting system includes: a power supply section supplying an AC current to a discharge lamp; a voltage detection section detecting a lamp voltage value applied to the discharge lamp; a storage section storing a target voltage value of a lamp voltage value; and a control section controlling, as a control object, at least one of the frequency and the current value of an AC current that is supplied to the discharge lamp by the power supply section so that the lamp voltage value remains constant at a target voltage value, on the basis of a deviation between a detected voltage value detected by the voltage detection section and the target voltage value.SELECTED DRAWING: Figure 2
【課題】 放電ランプに印加される電圧値を一定にすることができる放電ランプ点灯装置を提供する。【解決手段】 放電ランプ点灯装置は、放電ランプに交流電流を供給する給電部と、放電ランプに印加されるランプ電圧値を検出する電圧検出部と、ランプ電圧値の目標電圧値を記憶する記憶部と、ランプ電圧値が目標電圧値で一定となるように、電圧検出部が検出した検出電圧値と目標電圧値との偏差に基づいて、給電部が放電ランプに供給する交流電流の周波数及び電流値の少なくとも一方を制御対象として制御する制御部と、を備える。【選択図】 図２ |
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