公开(公告)号：US20100103388A1

公开(公告)日：2010-04-29

申请号：US12504137

申请日：2009-07-16

申请人： Kentaro YAMAUCHI ,  Tetsuo TERASHIMA

发明人： Kentaro YAMAUCHI ,  Tetsuo TERASHIMA

IPC分类号： H05B41/26 ,  G03B21/00

CPC分类号： H05B41/2928 ,  G03B21/005 ,  H05B41/2885

摘要： A discharge lamp lighting device includes: a power control circuit adapted to generate discharge lamp driving power; an alternating current conversion circuit adapted to execute polarity reversal on a direct current output from the power control circuit, thereby generating an alternating current; and a control section adapted to perform alternating current conversion control of controlling the polarity reversal timing of the alternating current, wherein the control section executes a steady drive process of executing the alternating current conversion control at a given frequency, a first low frequency drive process of executing the alternating current conversion control at a first low frequency driving frequency lower than the given frequency, and starting from a first polarity and ending with the first polarity, and a second low frequency drive process of executing the alternating current conversion control at a second low frequency driving frequency lower than the given frequency, and starting from a second polarity and ending with the second polarity.

摘要翻译： 放电灯点亮装置包括：功率控制电路，适于产生放电灯驱动电力; 交流电转换电路，用于对从功率控制电路输出的直流电进行极性反转，从而产生交流电; 以及控制部，其适于执行控制所述交流电的极性反转定时的交流转换控制，其中，所述控制部执行以给定频率执行所述交流电转换控制的稳定驱动处理，所述第一低频驱动处理 在低于给定频率的第一低频驱动频率下执行交流转换控制，并从第一极性开始并以第一极性结束;以及第二低频驱动处理，以第二低电平执行交流电转换控制 频率驱动频率低于给定频率，并从第二极性开始并以第二极性结束。

公开(公告)号：US20100066261A1

公开(公告)日：2010-03-18

申请号：US12558908

申请日：2009-09-14

申请人： Kengo KIMURA

发明人： Kengo KIMURA

IPC分类号： H02M7/537 ,  H05B41/26

CPC分类号： H05B41/28 ,  H05B41/2827

摘要： A DC/AC converter includes a resonant circuit having a first capacitor connected to at least one of a primary winding and a secondary winding of a transformer and an output end connected to a load, the resonant circuit receiving an alternating signal having a predetermined frequency and amplitude to pass a current, a variable impedance element connected in parallel with a part of the output end of the resonant circuit, the variable impedance element changing the impedance value thereof according to a current passing through the load, and a controller to control the current passing through the load to a predetermined value by changing the resonant frequency of the resonant circuit according to the changed impedance value of the variable impedance element.

摘要翻译： DC / AC转换器包括一个谐振电路，其具有连接到变压器的初级绕组和次级绕组中的至少一个的第一电容器和连接到负载的输出端，所述谐振电路接收具有预定频率的交流信号，以及 振幅以通过电流，可变阻抗元件与谐振电路的输出端的一部分并联连接，可变阻抗元件根据通过负载的电流改变其阻抗值，以及控制器来控制电流 通过根据可变阻抗元件的改变的阻抗值改变谐振电路的谐振频率，将负载传递到预定值。

公开(公告)号：US20100033105A1

公开(公告)日：2010-02-11

申请号：US12534500

申请日：2009-08-03

申请人： Kentaro YAMAUCHI ,  Tetsuo TERASHIMA

发明人： Kentaro YAMAUCHI ,  Tetsuo TERASHIMA

IPC分类号： H05B41/26

CPC分类号： H05B41/2928

摘要： A driving device of an electric discharge lamp includes: a discharge lamp lighting unit which supplies power to the electric discharge lamp while alternately switching polarity of voltage applied between two electrodes of the electric discharge lamp to lighting the electric discharge lamp; and an anode duty ratio modulating unit which sets at least a first retention period and a second retention period having an anode duty ratio different from that of the first retention period and provided after the first retention period to modulate the anode duty ratios, assuming that each of the retention periods is a period for retaining an anode duty ratio as ratio of an anode period in which one of the electrodes operates as anode at a constant value in one cycle of the polarity switching, wherein the anode duty ratio modulating unit has a first modulation mode for operating the electric discharge lamp in steady condition and a second modulation mode for providing larger change of the anode duty ratio between the first retention period and the second retention period than change of the first modulation mode.

摘要翻译： 放电灯的驱动装置包括：放电灯点亮单元，其在交替地切换施加在所述放电灯的两个电极之间的电压的极性以点亮所述放电灯的同时向所述放电灯供电; 以及阳极占空比调制单元，其至少设置具有与第一保留期间不同的第一保留期间和第二保留期间，并且在第一保留期限之后设置以调节阳极占空比，以假设每个 保持期间是将极性切换中的一个循环中的一个电极作为阳极作为阳极的阳极周期的比例保持为阳极占空比的期间，其中，阳极占空比调制单元具有第一 用于在稳定状态下操作放电灯的调制模式和第二调制模式，用于与第一调制模式的改变相比，在第一保持期间和第二保持期间之间提供更大的阳极占空比的变化。

公开(公告)号：US20100033104A1

公开(公告)日：2010-02-11

申请号：US12532156

申请日：2007-04-23

申请人： Bernd Rudolph

发明人： Bernd Rudolph

IPC分类号： H05B41/26

CPC分类号： H05B41/2825 ,  Y10S315/05 ,  Y10S315/07

摘要： A circuit arrangement for starting and operating at least one discharge lamp is provided.

摘要翻译： 提供了用于启动和操作至少一个放电灯的电路装置。

公开(公告)号：US20100026200A1

公开(公告)日：2010-02-04

申请号：US12519408

申请日：2007-12-25

申请人： Kazuhiko Sakai ,  Yoshinori Tsuzuki

发明人： Kazuhiko Sakai ,  Yoshinori Tsuzuki

IPC分类号： H05B41/26

CPC分类号： H01J65/048 ,  H01J61/12 ,  H05B41/2806 ,  Y02B20/22

摘要： In an electrodeless discharge lamp (1) which is lit with PWM light control, a discharge gas including krypton is filled in a bulb (10), so that restriking voltage can be decreased and thus, and oscillation of the ferrite core (22) which is inserted inside of a cavity (5) of the bulb (10) can be decreased, and thus, occurrence of undesired sound can be restrained.

摘要翻译： 在用PWM控制点亮的无电极放电灯（1）中，将包括氪的放电气体填充在灯泡（10）中，从而可以减少再起弧电压，从而使铁氧体磁心（22）的摆动 插入灯泡（10）的空腔（5）的内部可以减少，从而可以抑制不期望的声音的发生。

公开(公告)号：US20090322246A1

公开(公告)日：2009-12-31

申请号：US12491083

申请日：2009-06-24

申请人： Sasakawa Tomohiro

发明人： Sasakawa Tomohiro

IPC分类号： H05B41/26

CPC分类号： H05B41/295

摘要： Electrical characteristics associated with a filament resistance are detected to control a preheating amount so as to heat a filament into an optimum state for emission in accordance with determined preheating time.A ballast for a discharge lamp includes an inverter including at least one or more switching elements connected to an output end of a DC power source, a control circuit or controlling switching in the inverter, a resonant circuit connectable to a discharge lamp with a thermionic cathode, a load circuit connected to an output end of the inverter, a preheating circuit for preheating a filament of the discharge lamp, and a detection circuit for detecting electrical characteristics associated with a filament resistance of the discharge lamp. The electrical characteristics associated with a filament resistance are detected by the detection circuit to control a preheating amount for the filament, in accordance with a filament resistance value and determined preheating time, so that a ratio of a hot resistance Rh to a cold resistance Rc in the filament falls in a range of 4.0 or more and less than 5.5.

摘要翻译： 检测与灯丝电阻相关的电特性以控制预热量，以便根据确定的预热时间将灯丝加热到发射的最佳状态。 一种用于放电灯的镇流器包括：逆变器，包括连接到直流电源的输出端，控制电路或逆变器中的开关的至少一个或多个开关元件，可连接到具有热离子阴极的放电灯的谐振电路 连接到逆变器的输出端的负载电路，用于预热放电灯的灯丝的预热电路和用于检测与放电灯的灯丝电阻相关联的电特性的检测电路。 通过检测电路检测与灯丝电阻相关的电特性，以根据灯丝电阻值和确定的预热时间来控制灯丝的预热量，使得热电阻Rh与耐冷性Rc的比率 灯丝落在4.0以上且小于5.5的范围内。

公开(公告)号：US20090267529A1

公开(公告)日：2009-10-29

申请号：US12086405

申请日：2006-11-30

申请人： Joachim Mühlschlegel

发明人： Joachim Mühlschlegel

IPC分类号： H05B41/26

CPC分类号： H05B41/2928 ,  Y02B20/208

摘要： Disclosed is a circuit arrangement for supplying a lamp wattage to a high-pressure gas discharge lamp (Lp) in the form of an alternating current having an operating frequency, said operating frequency being frequency-modulated within large limits. The time characteristic of the operating frequency is selected such that more power is supplied to the lamp at greater frequencies, thus reducing the risk of exciting acoustic resonance in the lamp. Amplitude modulation through the frequency response of an interface (L1, C2, C3) is compensated by means of the time characteristic of the operating frequency.

摘要翻译： 公开了一种用于以具有工作频率的交流电的形式向高压气体放电灯（Lp）提供灯瓦数的电路装置，所述工作频率在大范围内进行频率调制。 选择工作频率的时间特性，使得以更大的频率向灯提供更多的功率，从而降低激发灯中的声共振的风险。 通过接口（L1，C2，C3）的频率响应进行的幅度调制通过工作频率的时间特性进行补偿。

公开(公告)号：US20090243994A1

公开(公告)日：2009-10-01

申请号：US12298087

申请日：2007-04-18

申请人： Takahisa Hatano ,  Kosho Suzuki

发明人： Takahisa Hatano ,  Kosho Suzuki

IPC分类号： G09G3/36 ,  H05B41/26

CPC分类号： H05B41/3927 ,  G09G3/3406 ,  G09G2310/08 ,  G09G2320/064 ,  G09G2320/0693 ,  G09G2330/026

摘要： A PWM generation circuit generates a PWM pulse signal having a variable duty ratio in order to control the luminance of a backlight. An edge detection circuit outputs a leading edge signal in response to the rise of the PWM pulse signal generated by the PWM generation circuit. A set value pulse generation circuit generates a set width pulse signal in response to the rise of the leading edge signal. The pulse width of the set width pulse signal is set so as to be larger than the minimum PWM pulse width. An OR gate calculates the logical sum of the set width pulse signal and the PWM pulse signal. An inverter circuit feeds a driving signal to a backlight on the basis of an output signal of the OR gate.

摘要翻译： PWM生成电路生成具有可变占空比的PWM脉冲信号，以便控制背光的亮度。 边沿检测电路响应于由PWM产生电路产生的PWM脉冲信号的上升而输出前沿信号。 设定值脉冲发生电路响应于前沿信号的上升而产生设定的宽度脉冲信号。 设定宽度脉冲信号的脉冲宽度被设定为大于最小PWM脉冲宽度。 或门计算设定宽度脉冲信号和PWM脉冲信号的逻辑和。 逆变器电路基于或门的输出信号将驱动信号馈送到背光源。

公开(公告)号：US20090146579A1

公开(公告)日：2009-06-11

申请号：US12301540

申请日：2007-05-24

申请人： Takeshi Goriki ,  Akira Yufuku ,  Jun Konishi

发明人： Takeshi Goriki ,  Akira Yufuku ,  Jun Konishi

IPC分类号： H05B41/26

CPC分类号： H05B41/388 ,  Y02B20/204

摘要： There is provided a discharge-lamp lighting device that, upon start-up of a high-intensity discharge lamp, alternately outputs a period A during which a starting circuit applies a high voltage to the high-intensity discharge lamp by resonance operation when a DC/AC inverter outputs a high-frequency voltage, and a period B during which the DC/AC inverter applies a low-frequency-square-wave voltage or a DC voltage to the high-intensity discharge lamp via the starting circuit. The period A for applying the high voltage by the resonance operation is set to about a time enough for a high-intensity discharge lamp in an initial aging stage to cause a dielectric breakdown, and a period C for alternately outputting the high-voltage generating period A and the period B for outputting the low-frequency-square-wave voltage or the DC voltage is set to about a time enough for a high-intensity discharge lamp in a life's last stage to cause a dielectric breakdown.

摘要翻译： 提供了一种放电灯点亮装置，其在高亮度放电灯的启动时交替地输出一个周期A，其中启动电路通过谐振操作向高强度放电灯施加高电压，当DC / AC逆变器输出高频电压，以及DC / AC逆变器通过起动电路向高强度放电灯施加低频方波电压或直流电压的周期B. 用于通过谐振操作施加高电压的周期A被设置为在初始老化阶段中的高强度放电灯足够的时间以引起电介质击穿，以及用于交替地输出高电压产生周期的周期C A和用于输出低频方波电压或DC电压的周期B被设置为在一段最后阶段的高强度放电灯足够的时间以引起电介质击穿。

公开(公告)号：US20080198337A1

公开(公告)日：2008-08-21

申请号：US12028783

申请日：2008-02-09

申请人： Kenichi Kitagawa

发明人： Kenichi Kitagawa

IPC分类号： G03B21/14 ,  H05B41/26

CPC分类号： H05B41/2887 ,  G03B21/2026 ,  Y02B20/202

摘要： A discharge lamp control device includes: a discharge lamp driver section which drives a lamp; and a discharge lamp drive control section which performs constant current control so that a discharge lamp current that flows between electrodes of the lamp becomes constant when a discharge lamp voltage applied between the electrodes of the lamp is lower than a first voltage, and performs constant power control so that an amount of power supplied to the lamp becomes constant when the discharge lamp voltage is equal to or higher than the first voltage after the lamp has been lighted. The discharge lamp drive control section includes a discharge lamp drive frequency control section which causes the drive frequency when the discharge lamp voltage is lower than a second voltage which is equal to or lower than the first voltage to be lower than the drive frequency when the discharge lamp voltage is higher than the second voltage.

摘要翻译： 放电灯控制装置包括：驱动灯的放电灯驱动器部; 以及放电灯驱动控制部，其在施加在所述灯的电极之间的放电灯电压低于第一电压时，进行恒定电流控制，使得在所述灯的电极之间流动的放电灯电流变得恒定，并且执行恒定功率 控制使得当灯点亮之后，当放电灯电压等于或高于第一电压时，供应给灯的功率量变得恒定。 放电灯驱动控制部分包括放电灯驱动频率控制部分，当放电灯电压低于等于或低于第一电压的第二电压时，使驱动频率低于放电时的驱动频率 灯电压高于第二电压。