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    • 8. 发明授权
    • Discharge lamp lighting device and lighting fixture
    • 放电灯照明装置和照明灯具
    • US08164269B2
    • 2012-04-24
    • US12438582
    • 2007-07-23
    • Kenichi FukudaNobutoshi Matsuzaki
    • Kenichi FukudaNobutoshi Matsuzaki
    • H05B41/16
    • H05B41/386H05B41/2928H05B41/388Y02B20/204
    • One output power characteristic curve for supplying constant power is provided with respect to a raging voltage range of a discharge lamp, and in addition, a plurality of output power characteristic curves W1, W2 and W3 are provided with respect to a lamp voltage before the rating voltage range. There is provided minimum lamp voltage detecting means for detecting a minimum lamp voltage after a high intensity discharge lamp shifts to an arc discharge in an event where lamp power is supplied to a high intensity discharge lamp based on any initially set output power characteristic curve after the high intensity discharge lamp is started. As the minimum lamp voltage detected by the minimum lamp voltage detecting means is larger in a predetermined minimum lamp voltage range, any larger output power characteristic curve is reset from the plurality of output power characteristic curves W1, W2 and W3, and subsequent power control is performed.
    • 针对放电灯的炽热电压范围提供一个用于提供恒定功率的输出功率特性曲线,此外,相对于额定值之前的灯电压设置多个输出功率特性曲线W1,W2和W3 电压范围 提供了最低灯电压检测装置,用于在高强度放电灯转换到电弧放电之后检测灯电压的最小值,在灯功率被提供给高强度放电灯的情况下,基于任何初始设定的输出功率特性曲线 高亮度放电灯启动。 由于最小灯电压检测装置检测出的最小灯电压在预定的最小灯电压范围内较大,因此,从多个输出功率特性曲线W1,W2和W3中复位更大的输出功率特性曲线,随后的功率控制为 执行。