公开(公告)号：US06429603B1

公开(公告)日：2002-08-06

申请号：US09559174

申请日：2000-04-27

申请人： Kazuhiko Tsugita ,  Kouji Shibata ,  Tetsuya Kobayashi ,  Isamu Ogawa ,  Kenji Hamazaki ,  Hiroaki Nishikawa ,  Naoki Wada ,  Osamu Ishikawa ,  Moriaki Okuda ,  Yasunori Ieki

发明人： Kazuhiko Tsugita ,  Kouji Shibata ,  Tetsuya Kobayashi ,  Isamu Ogawa ,  Kenji Hamazaki ,  Hiroaki Nishikawa ,  Naoki Wada ,  Osamu Ishikawa ,  Moriaki Okuda ,  Yasunori Ieki

IPC分类号： H05B3702

CPC分类号： H05B41/2855 ,  Y10S315/04 ,  Y10S315/07

摘要： The discharge lamp lighting apparatus includes: a direct current power supply E; switching elements Q1 and Q2 for switching a direct current supplied from the direct current power supply E so as to generate a high frequency current; a discharge lamp load circuit LAC1 which is constructed in a manner that a discharge lamp LA and a coupling capacitor C4 are connected in series, and the discharge lamp LA is lit by a high frequency current generated by the switching elements Q1 and Q2; a switching element control circuit IC1 for controlling the switching elements Q1 and Q2. The discharge lamp lighting apparatus is further provided with a protective circuit NP2 which distinguishes a fault of the discharge lamp LA by detecting a voltage generated in the coupling capacitor C4, and outputs a control signal to the switching element control circuit IC1.

摘要翻译： 放电灯点亮装置包括：直流电源E; 开关元件Q1和Q2，用于切换从直流电源E提供的直流电流，以产生高频电流; 放电灯负载电路LAC1以放电灯LA和耦合电容器C4串联连接的方式构成，放电灯LA由开关元件Q1和Q2产生的高频电流点亮; 用于控制开关元件Q1和Q2的开关元件控制电路IC1。 放电灯点亮装置还设置有保护电路NP2，其通过检测耦合电容器C4中产生的电压来区分放电灯LA的故障，并将控制信号输出到开关元件控制电路IC1。