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1. 发明专利

JP2009026497A Discharge lamp lighting circuit 审中-公开
标题翻译：放电灯照明电路
公开(公告)号：JP2009026497A
公开(公告)日：2009-02-05
申请号：JP2007185979
申请日：2007-07-17
申请人： Koito Mfg Co Ltd , 株式会社小糸製作所
发明人： OTA SHINJI , ICHIKAWA TOMOYUKI , TAKEDA HITOSHI
IPC分类号： H05B41/24 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a discharge lamp lighting circuit capable of reducing a loss. SOLUTION: The discharge lamp lighting circuit 1 is provided with an inverter circuit 10 which converts an input DC power into an AC power, a step-up circuit 30 which steps up the AC power from the inverter circuit 10 and generates a step-up AC power for supplying to a discharge lamp 5 and has a transformer 34 to output the step-up AC power and a resonance circuit 31 which is connected between the transformer 34 and the inverter circuit 10 and includes a primary coil 34a of the transformer 34, a starting circuit 40 which generates a starting pulse voltage for starting the discharge lamp 5 from the AC power from the inverter circuit 10 or the step-up circuit 30, and a control circuit 60 which carries out a switching control to the inverter circuit 10. The control circuit 60 carries out an intermittent switching control which has an operation period to perform a switching control and a stop period to stop the switching control alternately. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：提供能够减少损耗的放电灯点亮电路。解决方案：放电灯点亮电路1设置有将输入DC电力转换为AC电力的逆变器电路10，升压电路30，其从逆变器电路10升压AC电力，并产生步骤 - 用于向放电灯5提供的AC电力，并具有输出升压AC电力的变压器34和连接在变压器34和逆变器电路10之间并包括变压器的初级线圈34a的谐振电路31 34是从逆变器电路10或升压电路30的AC电力产生起动脉冲电压起动电路40的启动电路40以及对逆变器电路进行开关控制的控制电路60 控制电路60执行间歇切换控制，其具有执行切换控制和停止时段的操作周期以交替地停止切换控制。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2008288070A Discharge lamp lighting-up circuit 审中-公开
标题翻译：放电灯照明电路
公开(公告)号：JP2008288070A
公开(公告)日：2008-11-27
申请号：JP2007132748
申请日：2007-05-18
申请人： Koito Mfg Co Ltd , 株式会社小糸製作所
发明人： ICHIKAWA TOMOYUKI , MATSUI KOTARO
IPC分类号： H05B41/24
摘要： PROBLEM TO BE SOLVED: To provide a discharge lamp lighting circuit which can control so-called sound resonance where an airflow inside a discharge lamp and a lighting frequency resonate when the discharge lamp is lit up in high frequency and can stabilize luminescent spots generated on an electrode surface. SOLUTION: The discharge lamp lighting circuit includes a DC-AC conversion circuit 3 for supplying an AC current, a resonance follower controlling portion 6 for controlling the AC current and an input current calculating portion 11. The AC-DC conversion circuit 3 has resonance circuits 7, 8 which have half bridge inverters and are connected in parallel from output terminals of the inverters, and the resonance frequency of the resonance circuit 7 is set up in a frequency odd times the resonance frequency of the resonance circuit 8, and the resonance follower controlling portion 6 operates a resonance follower work by outputting a switching signal which is the resonance frequency of the resonance circuit 8, and the input current calculating portion 11 controls a current to the discharge lamp by a DC voltage value. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种放电灯点亮电路，其可以控制所谓的声音共振，其中当放电灯以高频点亮并且可以稳定发光点时，放电灯内部的气流和发光频率谐振在电极表面上产生。解决方案：放电灯点亮电路包括用于提供AC电流的DC-AC转换电路3，用于控制AC电流的谐振跟随器控制部分6和输入电流计算部分11.AC-DC转换电路3 具有半桥逆变器并且与逆变器的输出端并联连接的谐振电路7,8，谐振电路7的谐振频率以奇数倍的谐振电路8的谐振频率设定，谐振跟随器控制部分6通过输出作为谐振电路8的谐振频率的开关信号来操作谐振跟随器工作，并且输入电流计算部分11通过DC电压值控制到放电灯的电流。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2008171640A Discharge lamp lighting circuit 审中-公开
标题翻译：放电灯照明电路
公开(公告)号：JP2008171640A
公开(公告)日：2008-07-24
申请号：JP2007002624
申请日：2007-01-10
申请人： Koito Mfg Co Ltd , 株式会社小糸製作所
发明人： ICHIKAWA TOMOYUKI , MATSUI KOTARO , KASABA YUSUKE
IPC分类号： H05B41/24 , H02M7/00
CPC分类号： H05B41/2887 , Y02B20/202
摘要： PROBLEM TO BE SOLVED: To substantially improve lighting stability of a discharge lamp from lighting start-up through normal lighting. SOLUTION: The discharge lamp lighting circuit 1 is provided with a half-bridge inverter 5 converting an output of a direct-current power source B into an alternating-current power, a power supply part 2 equipped with a bridge driver 6 for driving the half-bridge inverter 5, and a control part 3 generating control signals S 1 for controlling driving frequencies F of the bridge driver 6. The control part 3 is provided with a random number generating circuit 21 generating random number signals, and changes the driving frequencies F by a variation volume in accordance with the random number signals at a time interval of N/F (N is an integer of 1 or more). COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过正常照明，大幅度地提高放电灯的点亮启动的照明稳定性。解决方案：放电灯点亮电路1设置有将直流电源B的输出转换为交流电力的半桥逆变器5，配备有桥式驱动器6的电源部2，用于驱动半桥逆变器5，以及控制部分3，产生用于控制电桥驱动器6的驱动频率F的控制信号S 1 。控制部分3设有随机数产生电路21，产生随机数信号，并且以N / F（N为1以上的整数）的时间间隔根据随机数信号改变驱动频率F的变化量。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2008027710A Discharge lamp lighting circuit 审中-公开
标题翻译：放电灯照明电路
公开(公告)号：JP2008027710A
公开(公告)日：2008-02-07
申请号：JP2006198535
申请日：2006-07-20
申请人： Koito Mfg Co Ltd , 株式会社小糸製作所
发明人： OTA SHINJI , ICHIKAWA TOMOYUKI
IPC分类号： H05B41/24 , H02M7/00
CPC分类号： H05B41/288
摘要： PROBLEM TO BE SOLVED: To provide a lighting circuit capable of monitoring a status of a discharge lamp without affected by an earth fault. SOLUTION: The lighting circuit 11 includes a capacitor 17 for resonance, and an inductor 19 for resonance, and further includes a first output 21, a second output 23, a resistance 25, and a monitor circuit 29. An AC/DC conversion circuit 13 of the lighting circuit 11 generates an alternating current voltage from a direct current voltage. One end 25a of the resistance 25 is connected to the second output 23, and other end 25b is connected to one end 33a of a secondary side winding wire 33. An output 27 for monitor is connected to the other end 25b of the resistance 25, and is provided in order to provide a signal for monitoring a current flowing to the discharge lamp 30. The one end 25a of the resistance 25 is connected to a grounding wire GND. The monitor circuit 29 receives a signal from the output 27 for monitor. The monitor circuit 29 generates a signal for monitoring a current IL flowing to the discharge lamp 30. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够不受接地故障影响地监视放电灯的状态的照明电路。解决方案：照明电路11包括用于谐振的电容器17和用于谐振的电感器19，并且还包括第一输出21，第二输出23，电阻25和监视器电路29. AC / DC 点亮电路11的转换电路13从直流电压产生交流电压。电阻25的一端25a连接到第二输出23，另一端25b连接到次级侧绕组33的一端33a。监视器的输出27连接到电阻25的另一端25b，并且被提供以提供用于监视流向放电灯30的电流的信号。电阻25的一端25a连接到接地线GND。监视电路29接收来自监视器的输出27的信号。监视电路29产生用于监视流向放电灯30的电流IL的信号。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2007018960A Discharge lamp lighting circuit 审中-公开
标题翻译：放电灯照明电路
公开(公告)号：JP2007018960A
公开(公告)日：2007-01-25
申请号：JP2005201444
申请日：2005-07-11
申请人： Koito Mfg Co Ltd , 株式会社小糸製作所
发明人： ICHIKAWA TOMOYUKI , MURAMATSU TAKAO
IPC分类号： H05B41/24
CPC分类号： H05B41/2883
摘要： PROBLEM TO BE SOLVED: To automatically regulate the lower limit of drive frequency of a switching element according to the change of resonance frequency, when lighting so that a state of drive frequency being less than the minimum value does not continue for a long time, in a high-frequency lighting circuit of a discharge lamp. SOLUTION: This discharge lamp lighting circuit 1 comprises a DC-AC conversion circuit 3 having a plurality of switching elements 5H, 5L and series resonance circuits 8, 9, 7p, and a control means 17 for preventing continuation of the state of the driving frequency of the switching elements being less than the lowest frequency. When the discharge lamp is on, driving control of the switching elements is performed in a frequency region higher than that of series resonance frequency, and a drive state detecting circuit 15 is used to monitor the drive state of the switching elements, based on the relation to the phase of a lamp current flowing in the discharge lamp. When the state of the drive frequency of the switching elements is detected as less than the lowest frequency, the drive frequency is heightened, to automatically regulate the lower limit of the drive frequency. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了根据共振频率的变化自动调节开关元件的驱动频率的下限，当点亮时，驱动频率小于最小值的状态不会持续很长时间时间，在放电灯的高频点亮电路中。解决方案：该放电灯点亮电路1包括具有多个开关元件5H，5L和串联谐振电路8,9,7p的DC-AC转换电路3以及用于防止持续的状态的控制装置17 开关元件的驱动频率小于最低频率。当放电灯点亮时，开关元件的驱动控制在高于串联谐振频率的频率区域中进行，并且驱动状态检测电路15用于基于关系来监视开关元件的驱动状态到在放电灯中流动的灯电流的相位。当开关元件的驱动频率的状态被检测为小于最低频率时，驱动频率提高，以自动调节驱动频率的下限。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2006244884A Vehicle lamp 审中-公开
标题翻译：车灯
公开(公告)号：JP2006244884A
公开(公告)日：2006-09-14
申请号：JP2005059928
申请日：2005-03-04
申请人： Koito Mfg Co Ltd , 株式会社小糸製作所
发明人： ICHIKAWA TOMOYUKI
IPC分类号： F21V15/00 , F21W101/10 , F21Y101/02
摘要： PROBLEM TO BE SOLVED: To reduce power consumption of a heating element in a lamp provided with the heating element for removing snow or waterdrops adhering to a front surface of a vehicle lamp.
SOLUTION: This vehicle lamp is provided with: an LED6 as a luminous element housed in a lamp body; and a resistance element 10 as the heating element heating a front cover covering a front opening of the lamp body and transmitting light emitted by the LED6. The LED6 and the resistance element 10 are connected with a power supply BAT in series. While the resistance element is used as a resistance for limiting a current in a semiconductor device, the resistance element is heated by the current flowing in the resistance element to heat the front cover. Since the consumed power by the resistance element 10 is used as power for heat generation, the power consumption in the whole lamp is reduced compared with when the resistance element 10 is connected with the power supply in parallel with the LED6.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了降低设置有用于除去附着在车辆灯的前表面上的雪或水滴的加热元件的灯的发热元件的功率消耗。解决方案：该车辆灯设置有：作为容纳在灯体中的发光元件的LED6; 以及作为加热元件的电阻元件10，其加热覆盖灯体的前开口的前盖并透射由LED6发射的光。 LED6和电阻元件10与电源BAT串联连接。虽然电阻元件用作限制半导体器件中的电流的电阻，但是电阻元件由在电阻元件中流动的电流加热以加热前盖。由于电阻元件10的消耗电力被用作发热的功率，与电阻元件10与LED6并联连接的电源相比，整个灯的功耗降低。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2005012005A Transformer 审中-公开
标题翻译：变压器
公开(公告)号：JP2005012005A
公开(公告)日：2005-01-13
申请号：JP2003174829
申请日：2003-06-19
申请人： Koito Mfg Co Ltd , 株式会社小糸製作所
发明人： ICHIKAWA TOMOYUKI , KANAMORI AKITAKA
IPC分类号： H01F27/28 , H01F38/08
摘要： PROBLEM TO BE SOLVED: To decrease the installation space and the connection man-hours for a transformer, by devising lead-out directions of primary winding and secondary winding terminals. SOLUTION: The transformer is provided with a primary winding 10p, a secondary winding 10s, and cores 21, 22. Both terminals 24a, 24b of the primary winding and both terminals 25a, 25b are located in the same direction, and the one terminal 24a of both the terminals of the primary winding is connected to the one terminal 25a of both the terminals of the secondary winding. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过设计初级绕组和次级绕组端子的引出方向，减少变压器的安装空间和连接工时。解决方案：变压器设置有初级绕组10p，次级绕组10s和磁芯21,22。初级绕组的两个端子24a，24b和两个端子25a，25b都位于相同的方向，并且初级绕组的两个端子的一个端子24a连接到次级绕组的两个端子的一个端子25a。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2003025904A Illuminating direction control device for vehicular lamp using stepping motor 审中-公开
标题翻译：使用步进电机的车辆灯的照明方向控制装置
公开(公告)号：JP2003025904A
公开(公告)日：2003-01-29
申请号：JP2001215137
申请日：2001-07-16
申请人： Koito Mfg Co Ltd , 株式会社小糸製作所
发明人： ICHIKAWA TOMOYUKI
IPC分类号： B60Q1/08 , H02P8/14
摘要： PROBLEM TO BE SOLVED: To reduce beating noises by using an illuminating direction control device for a vehicular lamp using a stepping motor. SOLUTION: The illuminating direction control device 1 comprises the stepping motor 7 and its driving circuit 6, wherein the illuminating direction of the vehicular lamp 8 can be changed by driving control by high frequency chopping. A noise spectrum is dispersed by grating fluctuation to the frequency of an oscillating signal obtained by an oscillation circuit 19 in the driving circuit 6.
摘要翻译：要解决的问题：通过使用步进电机使用用于车灯的照明方向控制装置来减少抖动噪声。解决方案：照明方向控制装置1包括步进电机7及其驱动电路6，其中可以通过高频斩波的驱动控制来改变车灯8的照明方向。噪声谱通过光栅波动分散到由驱动电路6中的振荡电路19获得的振荡信号的频率。

9. 发明专利

JP2010135276A Discharge lamp lighting circuit 有权
标题翻译：放电灯照明电路
公开(公告)号：JP2010135276A
公开(公告)日：2010-06-17
申请号：JP2009021797
申请日：2009-02-02
申请人： Koito Mfg Co Ltd , 株式会社小糸製作所
发明人： ICHIKAWA TOMOYUKI , SAITO KAZUKI , ITO MASAYASU
IPC分类号： H05B41/24 , H05B41/18 , H05B41/282
CPC分类号： H05B41/2921 , H05B41/04 , H05B41/2923 , H05B41/2925
摘要： PROBLEM TO BE SOLVED: To provide a discharge lamp lighting circuit capable of preventing light-off during re-ignition. SOLUTION: A driving voltage producing part 12 supplies AC driving voltage VL to a discharge lamp 4 to be driven. A lighting assisting circuit 10 is provided on the side of one end P1 of the discharge lamp 4. A lighting assisting capacitor C2, a lighting assisting resistor R2 and a switch SW3 are provided in series between one end P1 of the discharge lamp 4 and a fixed voltage terminal GND. A control circuit 30 controls the conducting condition of the switch SW3. The switch SW3 is turned on before lighting the discharge lamp 4 and turned off after lighting it. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够防止再点火期间的熄灯的放电灯点亮电路。解决方案：驱动电压产生部分12将AC驱动电压VL提供给待驱动的放电灯4。照明辅助电路10设置在放电灯4的一端P1侧。照明辅助电容器C2，照明辅助电阻器R2和开关SW3串联设置在放电灯4的一端P1和固定电压端子GND。控制电路30控制开关SW3的导通状态。开关SW3在点亮放电灯4之前被接通并在点亮之后被关闭。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2009004182A Discharge lamp lighting circuit 审中-公开
标题翻译：放电灯照明电路
公开(公告)号：JP2009004182A
公开(公告)日：2009-01-08
申请号：JP2007162946
申请日：2007-06-20
申请人： Koito Mfg Co Ltd , 株式会社小糸製作所
发明人： ICHIKAWA TOMOYUKI
IPC分类号： H05B41/24
摘要： PROBLEM TO BE SOLVED: To provide a discharge lamp lighting circuit that reduces losses. SOLUTION: A discharge lamp lighting circuit includes: an inverter circuit; a first booster circuit which has a first resonance circuit and generates output AC power by stepping up AC power from the inverter circuit; a second booster circuit which has a second resonance circuit and generates stepped-up AC power by stepping up AC power from the inverter circuit; a starting circuit which has a capacitance element storing the stepped-up AC power via a diode and a self-breakdown switch element generating a starting pulse voltage from power of the capacitance element; and a control circuit. A resonance frequency of the second resonance circuit is different from that of the first resonance circuit. The control circuit controls a switching frequency of the inverter circuit close to the resonance frequency of the second resonance circuit when a discharge lamp is off while controlling it close to the resonance frequency of the first resonance circuit when a discharge lamp is on. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供减少损耗的放电灯点亮电路。解决方案：放电灯点亮电路包括：逆变器电路; 第一升压电路，其具有第一谐振电路，并且通过从逆变器电路提高交流电力来产生输出交流电力; 第二升压电路，具有第二谐振电路，通过从逆变器电路加大交流电力来产生升压交流电; 启动电路，其具有通过二极管存储升压型AC电力的电容元件和从所述电容元件的功率产生起动脉冲电压的自分压开关元件; 和控制电路。第二谐振电路的谐振频率与第一谐振电路的谐振频率不同。当放电灯熄灭时，控制电路控制逆变器电路的开关频率接近第二谐振电路的谐振频率，同时当放电灯导通时控制它接近第一谐振电路的谐振频率。版权所有（C）2009，JPO＆INPIT

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