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    • 76. 发明专利
    • Discharge lamp lighting device
    • 放电灯照明装置
    • JP2006079830A
    • 2006-03-23
    • JP2002283169
    • 2002-09-27
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • YAMAMOTO NORIKAZU
    • H05B41/392H05B41/28
    • H05B41/3927H05B41/2806Y02B20/22
    • PROBLEM TO BE SOLVED: To provide a discharge lamp device of which light flickering, even when its dimming rate is made small, to provide a backlight and to provide a backlight for a liquid crystal display. SOLUTION: The lighting device 4 comprises a rectangular wave generating circuit 5, a drive signal generation circuit 6, a dimming control circuit 7, a switching circuit 8, and a pulse transformer 9. The rectangular wave generating circuit 5 inputs a rectangular wave signal Sb to the drive signal generating circuit 6. The drive signal generating circuit 6 inputs the switching circuit 8 a drive signal Sc which is generated, on the basis of rectangular wave signal Sb and a dimming signal Sa inputted from the dimming control circuit 7. The switching circuit 8 controls an input to the pulse transformer 9, based on the drive signal Sc and applies the applying voltage Va of the raised output voltage of the pulse transformer 9, and an alternating rectangular voltage starting with a negative rectangular wave voltage between the first electrode 2 and the grounded second electrode 3 of an arc tube 1. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供一种即使在其调光速度较小时也闪烁的放电灯装置来提供背光并提供用于液晶显示器的背光源。 解决方案:照明装置4包括矩形波发生电路5,驱动信号产生电路6,调光控制电路7,开关电路8和脉冲变压器9.矩形波发生电路5输入矩形波 波形信号Sb发送到驱动信号发生电路6.驱动信号发生电路6根据矩形波信号Sb和从调光控制电路7输入的调光信号S向切换电路8输入驱动信号Sc 开关电路8基于驱动信号Sc来控制对脉冲变压器9的输入,并且施加脉冲变压器9的升高的输出电压的施加电压Va和从负矩形波电压开始的交替矩形电压 第一电极2和电弧管1的接地第二电极3.版权所有(C)2006,JPO&NCIPI