公开(公告)号：US20070096561A1

公开(公告)日：2007-05-03

申请号：US11590021

申请日：2006-10-31

申请人： Hitoshi Takeda ,  Masayasu Ito

发明人： Hitoshi Takeda ,  Masayasu Ito

IPC分类号： B60L1/00

CPC分类号： H05B33/0815

摘要： A lighting controller for a lighting device for a vehicle includes a semiconductor light source; a power source for supplying electric power; and control circuitry for receiving the electric power from the power source and controlling a current supplied to the semiconductor light source. The control circuitry determines an amount of time the semiconductor light source is in a turned on state and an amount of time the semiconductor light source is in a turned off state. The control circuitry controls a value of the current supplied to the semiconductor light source based on both the determined amount of time the semiconductor light source is in a turned on state and the determined amount of time the semiconductor light source is in a turned off state. A method of controlling a lighting device for a vehicle includes receiving electric power from a power source; supplying a current to a semiconductor light source, determining an amount of time the semiconductor light source is in a turned on state and an amount of time the semiconductor light source is in a turned off state, and controlling a value of the current supplied to the semiconductor light source based on both the determined amount of time the semiconductor light source is in a turned on state and the determined amount of time the semiconductor light source is in a turned off state.

摘要翻译： 一种用于车辆照明装置的照明控制器，包括半导体光源; 用于供电的电源; 以及用于从电源接收电力并控制提供给半导体光源的电流的控制电路。 控制电路确定半导体光源处于导通状态的时间量和半导体光源处于关断状态的时间量。 控制电路基于半导体光源处于导通状态的所确定的时间量和半导体光源处于断开状态的确定的时间量来控制提供给半导体光源的电流的值。 一种控制车辆照明装置的方法包括从电源接收电力; 向半导体光源提供电流，确定半导体光源处于导通状态的时间量和半导体光源处于截止状态的时间量，以及控制提供给半导体光源的电流值 半导体光源基于确定的半导体光源处于导通状态的时间量以及所确定的半导体光源处于关闭状态的时间量。

公开(公告)号：US20070085494A1

公开(公告)日：2007-04-19

申请号：US11581610

申请日：2006-10-16

申请人： Hitoshi Takeda ,  Toru Nakayama ,  Masayasu Ito

发明人： Hitoshi Takeda ,  Toru Nakayama ,  Masayasu Ito

IPC分类号： H05B37/00

CPC分类号： H05B33/0854 ,  H05B33/0815 ,  H05B33/083 ,  H05B33/0851 ,  H05B33/0893

摘要： In a process in which a current is supplied from a switching regulator to multi-chip LEDs, the forward voltages of the LEDs are respectively detected in forward detecting circuits. The detected values are sent to a microcomputer. In the microcomputer, detected values when the multi-chip LEDs are initially turned on are stored as initial values. A first abnormality deciding value is set from the initial value. The detected values are sequentially stored as updated values. Second abnormality deciding values having conditions stricter than those of the first abnormality deciding value are sequentially set in accordance with the stored updated value. A read value is compared with the first abnormality deciding value or the read value is compared with the second abnormality deciding value to decide whether or not the abnormality of the LEDs is present. When it is decided that the LEDs are abnormal, an LED is turned on to inform a driver of the presence of the abnormality.

摘要翻译： 在从开关调节器向多芯片LED提供电流的过程中，在正向检测电路中分别检测LED的正向电压。 检测到的值被发送到微型计算机。 在微型计算机中，当多芯片LED最初被接通时的检测值被存储为初始值。 从初始值设定第一异常判定值。 检测到的值被依次存储为更新值。 根据存储的更新值依次设定具有比第一异常判定值更严格的条件的第二异常判定值。 将读取值与第一异常判定值进行比较，或者将读取值与第二异常判定值进行比较，以判定是否存在LED的异常。 当判定LED异常时，LED点亮，通知驾驶员异常的存在。

公开(公告)号：US07180249B2

公开(公告)日：2007-02-20

申请号：US11219510

申请日：2005-09-01

申请人： Toshiyuki Tsuchiya ,  Masayasu Ito ,  Takao Muramatsu

发明人： Toshiyuki Tsuchiya ,  Masayasu Ito ,  Takao Muramatsu

IPC分类号： H05B41/16

CPC分类号： H05B41/2981 ,  H02M7/538

摘要： Switching elements S1, S2 connected in series are provided on the secondary side of a pulse transformer T to which an input voltage is supplied from a DC power supply E. On the primary side of the pulse transformer T, switching element S3, S4 are provided, and a regenerating unit RG including a current limiting inductor L1 and a regenerating inductor L2 is connected to the DC power supply E and the primary side of the pulse transformer T. A current is limited by the inductor L1 during an on time of the element S3 or S4, whilst a current is regeneratively supplied to the DC power supply E by using the inductor L2 during the off time of the elements S3, S4.

摘要翻译： 串联连接的开关元件S 1，S 2设置在从直流电源E向输入电压供给的脉冲变压器T的次级侧。在脉冲变压器T的初级侧，开关元件S 3， S 4，并且包括限流电感器L 1和再生电感器L 2的再生单元RG连接到直流电源E和脉冲变压器T的初级侧。电流受电感器L 1 在元件S 3或S 4的导通时间期间，在元件S 3，S 4的断开时间期间，通过使用电感器L 2将电流再生地提供给DC电源E.

公开(公告)号：US07176638B2

公开(公告)日：2007-02-13

申请号：US10385679

申请日：2003-03-12

申请人： Masayasu Ito ,  Shinji Ohta

发明人： Masayasu Ito ,  Shinji Ohta

IPC分类号： G05F1/00

CPC分类号： H05B41/2926 ,  H05B41/2886 ,  Y02B20/202 ,  Y02B20/208 ,  Y10S315/07

摘要： A discharge lamp lighting circuit has a structure of a voltage resonance type including a transformer and a switching element to be provided on a primary side thereof as a DC—DC converting circuit for converting a DC input voltage into a desirable DC voltage. The lighting circuit further includes a control circuit serving to ON/OFF control the switching element, thereby controlling an output voltage Vout of the DC—DC converting circuit, and has a function of a current limitation related to the switching element. In the lighting circuit, if the output voltage Vout is raised, a current flowing to the switching element is limited to be decreased. Consequently, a voltage applied to the switching element can be suppressed, and furthermore, the winding ratio of the transformer does not need to be increased. Accordingly, it is possible to prevent an electrical efficiency from being deteriorated.

摘要翻译： 放电灯点亮电路具有包括变压器和开关元件的电压共振型结构，作为用于将直流输入电压转换成期望的直流电压的DC-DC转换电路。 点亮电路还包括用于对开关元件进行ON / OFF控制的控制电路，从而控制DC-DC转换电路的输出电压Vout，并且具有与开关元件相关的电流限制的功能。 在点亮电路中，如果输出电压Vout升高，则流向开关元件的电流被限制为减小。 因此，可以抑制施加到开关元件的电压，此外，变压器的绕组比不需要增加。 因此，可以防止电效率劣化。

公开(公告)号：US20070030138A1

公开(公告)日：2007-02-08

申请号：US11496530

申请日：2006-07-31

申请人： Masayasu Ito ,  Takanori Namba

发明人： Masayasu Ito ,  Takanori Namba

IPC分类号： B60Q1/50

CPC分类号： B60Q1/1415 ,  H05B33/0815 ,  H05B33/0845 ,  Y02B20/346 ,  Y02B20/347 ,  Y10T307/406 ,  Y10T307/937

摘要： When the level at an input terminal goes low upon the reception of a signal to dim an LED, a PNP transistor is rendered on and a voltage at the positive input terminal of an operational amplifier is raised, in accordance with a time constant that is defined by a resistor and a capacitor. In accordance with the increase in this voltage, a source current is supplied from the operational amplifier to a current detection terminal, and as the value of the source current is gradually increased, a current flowing across the shunt resistor of the switching regulator is gradually reduced. Further, the light emission level of the LED is gradually lowered from the fully lighted state to the 70% lighted state, and there is, for the LED, a light quantity change of about 30% in ten seconds.

摘要翻译： 当输入端子的电平在接收到使暗淡LED的信号变为低电平时，根据定义的时间常数，使PNP晶体管导通，运算放大器的正输入端的电压升高 通过电阻和电容。 根据该电压的增加，源电流从运算放大器提供给电流检测端子，随着源电流的值逐渐增加，流过开关调节器的分流电阻的电流逐渐减小 。 此外，LED的发光水平从完全点亮状态逐渐降低到70％的点亮状态，对于LED，在10秒内的光量变化约为30％。

公开(公告)号：US07157864B2

公开(公告)日：2007-01-02

申请号：US11124023

申请日：2005-05-06

申请人： Masayasu Ito ,  Hitoshi Takeda

发明人： Masayasu Ito ,  Hitoshi Takeda

IPC分类号： B60Q1/00

CPC分类号： H05B41/382

摘要： There is provided a vehicular lamp that can prevent excess current from flowing between an anode and a cathode at the lighting-up start to prevent a damage and life shortening of a cold cathode fluorescent lamp at low cost. The vehicular lamp includes: a cold cathode fluorescent lamp having a cathode, a gate, and an anode; and a lighting controlling unit operable to pre-discharge electricity from the cathode to the gate prior to lighting of the cold cathode fluorescent lamp, in which the lighting controlling unit applies a voltage between the cathode and the anode after once lowering a voltage between the cathode and the gate and then again applies an extraction voltage between the cathode and the gate in order to begin to discharge electricity from the cathode to the anode. The lighting controlling unit may pre-discharge electricity from the cathode to the gate until the temperature of the cathode is substantially equal to that of lighting-up time.

摘要翻译： 提供了一种车灯，其可以防止过多的电流在点亮开始时在阳极和阴极之间流动，以便以低成本防止冷阴极荧光灯的损坏和寿命缩短。 车灯包括：具有阴极，栅极和阳极的冷阴极荧光灯; 以及照明控制单元，其可操作以在点亮冷阴极荧光灯之前从阴极向栅极预放电，其中点亮控制单元在阴极和阳极之间施加电压，一次降低阴极之间的电压 并且然后在阴极和栅极之间再次施加提取电压，以便开始从阴极向阳极放电。 照明控制单元可以从阴极向栅极预放电，直到阴极的温度基本上等于点亮时间。

公开(公告)号：US07081708B2

公开(公告)日：2006-07-25

申请号：US10684738

申请日：2003-10-14

申请人： Masayasu Ito ,  Hiroki Ishibashi ,  Kentaro Murakami ,  Hitoshi Takeda

发明人： Masayasu Ito ,  Hiroki Ishibashi ,  Kentaro Murakami ,  Hitoshi Takeda

IPC分类号： H05B37/00

CPC分类号： H05B33/0815 ,  H05B33/0845

摘要： A lighting circuit for lighting a vehicular lamp including a plurality of light-emitting diodes, includes: a selection unit for selecting the number of light-emitting diodes to be connected in series in the vehicular lamp based on an instruction from the outside; a switching regulator for applying an output voltage based on a power-supply voltage output by an external DC power supply to the selected number of light-emitting diodes to be connected in series, so as to supply a supply current to the selected number of light-emitting diodes; and an output controlling unit for controlling the output voltage of the switching regulator based on the supply current.

摘要翻译： 一种用于点亮包括多个发光二极管的车灯的照明电路，包括：选择单元，用于基于来自外部的指令在车灯中选择串联连接的发光二极管的数量; 开关调节器，用于将基于由外部DC电源输出的电源电压的输出电压施加到要串联连接的选定数量的发光二极管，以便向选定数量的光提供电源电流 二极管 以及输出控制单元，用于基于供电电流来控制开关调节器的输出电压。

公开(公告)号：US07019465B2

公开(公告)日：2006-03-28

申请号：US10914951

申请日：2004-08-10

申请人： Takao Muramatsu ,  Masayasu Ito

发明人： Takao Muramatsu ,  Masayasu Ito

IPC分类号： H05B37/02 ,  G05F1/00

CPC分类号： H05B41/2883 ,  H05B41/388 ,  Y10S315/07

摘要： A discharge lamp illumination circuit 1 has a DC-AC conversion circuit 3 which effects DC-AC conversion and boosting upon receipt of a DC input, and a starter circuit 4. The DC-AC conversion circuit 3 has an AC transformer 7, a plurality of switching elements 5H and 5L, and a resonance capacitor 8. The switching elements are activated by control means 6, thereby inducing series resonance between the resonance capacitor 8 and an inductance component of the AC transformer 7, or between the resonance capacitor 8 and an inductance element connected to the resonance capacitor 8. In connection with the operating frequency of the switching elements, a first frequency value is a frequency value of a period when outputs are open before the discharge lamp 10 is illuminated, and a second frequency value is a frequency value of a period from illumination of the discharge lamp by the starter circuit until elapse of a predetermined time period or a time period which is specified in accordance with an illumination state. The first frequency value is specified to be identical with the first frequency value, or to be close to the first frequency value.

摘要翻译： 放电灯照明电路1具有DC-AC转换电路3，其在接收到DC输入时进行DC-AC转换和升压，以及起动电路4。 DC-AC转换电路3具有AC变压器7，多个开关元件5H和5L以及谐振电容器8。 开关元件被控制装置6激活，从而在谐振电容器8和交流变压器7的电感分量之间或谐振电容器8和连接到谐振电容器8的电感元件之间引起串联谐振。 关于开关元件的工作频率，第一频率值是在放电灯10点亮之前输出开路的周期的频率值，第二频率值是来自照明的周期的频率值 通过起动器电路放电灯，直到经过预定时间段或根据照明状态指定的时间段。 第一频率值被指定为与第一频率值相同或接近于第一频率值。

公开(公告)号：US20050189822A1

公开(公告)日：2005-09-01

申请号：US11051192

申请日：2005-02-04

申请人： Takanori Namba ,  Masayasu Ito

发明人： Takanori Namba ,  Masayasu Ito

IPC分类号： B60R16/03 ,  B60Q1/00 ,  B60R16/02 ,  F21V23/02 ,  G06K1/00 ,  H02M3/28 ,  H02M3/335 ,  H05B33/08 ,  H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0818

摘要： There is provided a vehicular lamp at low cost. A power source apparatus includes: an output controlling switch operable to intermittently carry an electric current; an output coil operable to accumulate energy according to the current flowing into the output controlling switch and to output an electric power based on the accumulated energy when the output controlling switch is turned off; an end detecting unit operable to detect that the output coil ends the output of the power; and an output controlling unit, in which the output controlling unit includes: a time memorizing unit that memorizes OFF time for which the output controlling switch should be kept off; a switch controlling unit that switches the output controlling switch on and off based on the OFF time memorized in the time memorizing unit; and a time changing unit that changes the OFF time memorized in the time memorizing unit. The time changing unit increases the OFF time when the end detecting unit is not detecting the end of the output and decreases the OFF time when the end detecting unit is detecting the end of the output, in the timing when the output controlling switch is turned on.

摘要翻译： 以低成本提供车灯。 电源装置包括：输出控制开关，其可操作以间歇地携带电流; 输出线圈，用于根据流入所述输出控制开关的电流累积能量，并且当所述输出控制开关断开时，基于所述累积能量输出电力; 结束检测单元，其可操作以检测输出线圈结束电力的输出; 以及输出控制单元，其中所述输出控制单元包括：存储所述输出控制开关应关闭的OFF时间的时间存储单元; 开关控制单元，其基于存储在时间存储单元中的OFF时间来接通和断开输出控制开关; 以及更改单元，其改变存储在时间存储单元中的OFF时间。 当输出控制开关导通的定时，时间改变单元增加结束检测单元未检测到输出结束时的关闭时间，并且当结束检测单元检测到输出结束时减小关闭时间 。

公开(公告)号：US20050035723A1

公开(公告)日：2005-02-17

申请号：US10916024

申请日：2004-08-11

申请人： Takao Muramatsu ,  Masayasu Ito

发明人： Takao Muramatsu ,  Masayasu Ito

IPC分类号： H05B41/24 ,  H05B41/18 ,  H05B41/288

CPC分类号： H05B41/2881 ,  Y02B20/204

摘要： A discharge lamp lighting circuit 1 has: a DC-AC converter circuit 3 which receives a DC input, and which conducts AC conversion and a boosting operation; and a starting circuit 4 which supplies a starting signal to a discharge lamp 10. The lighting circuit has a structure in which the primary and secondary circuits of an AC conversion transformer 7 constituting the DC-AC converter circuit 3 are electrically insulated from each other. An input terminal of the starting circuit 4 is connected to the secondary winding 7s of the AC conversion transformer 7 to obtain an input voltage for the starting circuit, and a starting signal which is boosted by the AC conversion transformer 7 is superimposed on the AC-converted output to be supplied to the discharge lamp 10.

摘要翻译： 放电灯点亮电路1具有：DC-AC变换电路3，其接收DC输入，进行AC转换和升压动作; 以及将启动信号提供给放电灯10的启动电路4.点亮电路具有这样的结构，其中构成DC-AC转换器电路3的AC转换变压器7的一次和二次电路彼此电绝缘。 起动电路4的输入端子连接到AC转换变压器7的次级绕组7s以获得用于起动电路的输入电压，并且由AC转换变压器7升压的起动信号叠加在AC- 转换输出以提供给放电灯10。