公开(公告)号：US06967446B2

公开(公告)日：2005-11-22

申请号：US10481638

申请日：2002-12-17

申请人： Takahisa Hamaguchi ,  Hiroyasu Kisaichi

发明人： Takahisa Hamaguchi ,  Hiroyasu Kisaichi

IPC分类号： H05B41/24 ,  H05B41/292 ,  H05B37/02

CPC分类号： H05B41/2928 ,  Y02B20/208 ,  Y10S315/07

摘要： A high pressure discharge lamp lighting apparatus is provided which prevents dying out or instabilities of the discharge arc inside the arc tube due to the acoustic resonance phenomena and enables to light the high pressure discharge lamp in a steady state. In the high pressure discharge lamp lighting apparatus having the high pressure discharge lamp, the lamp voltage detecting device, the high frequency power supplying device, and the control circuit, the apparatus includes an extracting device for extracting an upper limit frequency and a lower limit frequency of the resonance-free frequency band, and the control circuit includes a frequency moving device for changing the frequency of the high frequency power within a range defined by the upper limit frequency and the lower limit frequency extracted by the extracting device and then moving the frequency to a predetermined frequency which is determined based on the upper limit frequency and the lower limit frequency.

摘要翻译： 提供一种高压放电灯点亮装置，其防止由于声共振现象引起的电弧管内的放电电弧的熄灭或不稳定，并且能够使稳定状态的高压放电灯点亮。 在具有高压放电灯，灯电压检测装置，高频供电装置和控制电路的高压放电灯点亮装置中，该装置包括：提取装置，用于提取上限频率和下限频率 并且所述控制电路包括频率移动装置，用于在由所述提取装置提取的所述上限频率和下限频率限定的范围内改变所述高频功率的频率，然后移动所述频率 到基于上限频率和下限频率确定的预定频率。

公开(公告)号：US6133697A

公开(公告)日：2000-10-17

申请号：US381690

申请日：1999-09-23

申请人： Satoshi Nagai ,  Kenichiro Nishi ,  Takahisa Hamaguchi ,  Kentaro Eguchi ,  Jun Bunya ,  Osamu Ishikawa

发明人： Satoshi Nagai ,  Kenichiro Nishi ,  Takahisa Hamaguchi ,  Kentaro Eguchi ,  Jun Bunya ,  Osamu Ishikawa

IPC分类号： H05B41/392 ,  G05F1/00

CPC分类号： H05B41/3921 ,  H05B41/3925 ,  Y10S315/04

摘要： The present invention is to provide a fluorescent lamp dimming apparatus capable of continuously dimming the fluorescent lamp, and capable of eliminating a fluctuation of light outputs, and in particular, capable of turning ON the fluorescent lamp in a low temperature. The fluorescent lamp dimming apparatus is comprised of a lamp voltage detecting circuit for detecting a discharge voltage of the fluorescent lamp, and a control unit intermittently controls the output frequency of a high frequency power supply in such a manner that the output frequency becomes higher than a dimming frequency based on the dimming signal so as to periodically change a current supplied to the fluorescent lamp into a low current; and when the output frequency of the high frequency power supply becomes higher than the dimming frequency, the control unit sets a lower limit dimming set value based upon a detection voltage of the lamp voltage detecting circuit in order that the output frequency of the high frequency power supply is controlled to become lower than, or equal to the upper limit frequency in accordance with the lower limit dimming set value.

摘要翻译： PCT No.PCT / JP98 / 02073 Sec。 371 1999年9月23日第 102（e）1999年9月23日PCT PCT日期：1998年5月11日PCT公布。 公开号WO99 /​​ 59383 日期：1999年11月18日本发明提供一种荧光灯调光装置，其能够对荧光灯进行连续调光，能够消除光输出的波动，特别是能够在低温下接通荧光灯。 荧光灯调光装置包括用于检测荧光灯的放电电压的灯电压检测电路，并且控制单元以这样的方式间歇地控制高频电源的输出频率，使得输出频率变得高于 基于所述调光信号的调光频率，以便周期性地将提供给所述荧光灯的电流改变为低电流; 并且当高频电源的输出频率变得高于调光频率时，控制单元基于灯电压检测电路的检测电压设定下限调光设定值，以使高频电源的输出频率 电源根据下限调光设定值被控制为低于或等于上限频率。

公开(公告)号：US06181087B2

公开(公告)日：2001-01-30

申请号：US09485386

申请日：2000-02-09

申请人： Takahisa Hamaguchi ,  Osamu Ishikawa

发明人： Takahisa Hamaguchi ,  Osamu Ishikawa

IPC分类号： H05B3702

CPC分类号： H05B41/2827 ,  H05B41/2828 ,  H05B41/2855 ,  H05B41/3925

摘要： A discharge lamp lighting apparatus according to this invention comprises: an inverting circuit for converting a DC input into a high frequency output; a load circuit which is connected to the inverting circuit and is constructed by a plurality of discharge lamps; a detecting resistor connected between a terminal of the inverting circuit and a ground; an integrating circuit for integrating a voltage generated in the detecting resistor; an operational amplifier which receives an output of the integrating circuit as a negative input, receives a predetermined target value as a positive input, and performs an error amplification; a driver for controlling a switching frequency of the inverting circuit on the basis of an output of the operational amplifier; a frequency detecting comparator which inputs the output of the operational amplifier and whose output value is switched in the case where a frequency converted at an input value exceeds a predetermined value; a control circuit for switching an operating state of the driver depending on the output value of the frequency detecting comparator; and a latch circuit for holding the operating state switched by the control circuit in the case where the converted frequency exceeds the predetermined value. Therefore, even if a plurality of lamps are mounted, the circuit can be protected from a life ending lamp without performing a life ending detection for each lamp. The burden of the inverting circuit can certainly be detected and a protection can be performed, since the life states of a plurality of the lamps are detected in total.

摘要翻译： 根据本发明的放电灯点亮装置包括：反相电路，用于将DC输入转换成高频输出; 负载电路，连接到反相电路并由多个放电灯构成; 连接在反相电路的端子和地之间的检测电阻器; 用于积分在检测电阻器中产生的电压的积分电路; 接收积分电路的输出作为负输入的运算放大器接收预定的目标值作为正输入，并执行误差放大; 用于根据运算放大器的输出来控制反相电路的开关频率的驱动器; 在输入值变换的频率超过预定值的情况下，输入运算放大器的输出并输出输出值的频率检测比较器; 控制电路，用于根据频率检测比较器的输出值切换驾驶员的运行状态; 以及在转换频率超过预定值的情况下用于保持由控制电路切换的操作状态的锁存电路。 因此，即使安装了多个灯，也可以不对寿命终止灯进行保护，而不对每个灯进行寿命终止检测。 由于总共检测到多个灯的寿命，所以可以肯定地检测反相电路的负担并且可以进行保护。