公开(公告)号：US20060197467A1

公开(公告)日：2006-09-07

申请号：US11367106

申请日：2006-03-02

申请人： Shinji Ohta ,  Masayasu Ito

发明人： Shinji Ohta ,  Masayasu Ito

IPC分类号： H05B41/36

CPC分类号： H05B41/2882 ,  Y10S315/07

摘要： A DC/AC converter 3 performs AC conversion and a boosting function upon the reception of a DC voltage. A control unit 6 controls the DC/AC converter 3 to perform the lighting control of a discharge lamp. The DC/AC converter includes an AC conversion transformer 7, switching devices 5H, 5L and a resonance capacitor 8, and drives the switching devices to produce series resonance in the capacitor 8 and an inductance component for the transformer 7 or the inductance device 9. Before the discharge lamp 9 is turned on, the drive frequency for the switching devices gradually nears a resonance frequency f1 to increase an unloaded output, and a start signal is supplied to the discharge lamp. After the lighting of the discharge lamp has been initiated, the drive frequency is defined that is higher, by a predetermined frequency displacement value ΔF, than the drive frequency immediately before the discharge lamp is turned on. And the drive frequency for the switching device is shifted to a frequency area fb that is higher than a resonance frequency f2 when the discharge lamp is turned on.

摘要翻译： DC / AC转换器3在接收到DC电压时执行AC转换和升压功能。 控制单元6控制DC / AC转换器3执行放电灯的点亮控制。 DC / AC转换器包括AC转换变压器7，开关器件5H，5L和谐振电容器8，并且驱动开关器件以在电容器8中产生串联谐振和用于变压器7或电感器件的电感元件 9。 在放电灯9接通之前，开关器件的驱动频率逐渐接近谐振频率f 1，以增加无负载输出，并且向放电灯提供启动信号。 在放电灯的点亮已经开始之后，驱动频率被定义为比放电灯开启之前的驱动频率高出预定的频率位移值ΔF。 并且当放电灯导通时，开关器件的驱动频率被移动到高于谐振频率f 2的频率区域fb。

公开(公告)号：US20060082332A1

公开(公告)日：2006-04-20

申请号：US11242756

申请日：2005-10-04

申请人： Masayasu Ito ,  Hitoshi Takeda

发明人： Masayasu Ito ,  Hitoshi Takeda

IPC分类号： B60Q1/14

CPC分类号： H05B33/0815 ,  H05B33/0827 ,  H05B33/089 ,  Y02B20/341

摘要： The supply of a predetermined current to LEDs is controlled by using series regulators. In accordance with the controlled states of the series regulators, a switching regulator adjusts an output voltage relative to the LEDs to the maximum voltage. When a ground fault occurs at the anode of one of the LEDs, and when a short circuit occurs at the output terminal of the switching regulator and the output voltage drops abnormally, the operation of the switching regulator is halted. When the gate voltage of an NMOS transistor is raised due to the disconnection of one of the LEDs, or when the drain voltage of the transistor is raised due to a short circuit at one of the LEDs, a Zener diode becomes conductive and an NPN transistor and a PNP transistor are rendered on. Then, a current flows through a diode, and as the gate voltage has been lowered, the operation of the NMOS transistor is halted, so that the remaining, normal LEDs are protected when an abnormality occurs.

摘要翻译： 通过使用串联调节器来控制向LED提供预定电流。 根据串联稳压器的受控状态，开关稳压器将相对于LED的输出电压调整到最大电压。 在一个LED的阳极发生接地故障时，在开关稳压器的输出端发生短路，输出电压异常下降时，停止开关调节器的动作。 当NMOS晶体管的栅极电压由于其中一个LED的断开而升高时，或者当晶体管的漏极电压由于其中一个LED处的短路而升高时，齐纳二极管变为导通状态，而NPN晶体管 并且形成PNP晶体管。 然后，电流流过二极管，并且随着栅极电压降低，NMOS晶体管的操作停止，使得当发生异常时保留正常的LED。

公开(公告)号：US20060061303A1

公开(公告)日：2006-03-23

申请号：US11225730

申请日：2005-09-13

申请人： Hitoshi Takeda ,  Masayasu Ito

发明人： Hitoshi Takeda ,  Masayasu Ito

IPC分类号： H05B39/04 ,  H05B37/02

CPC分类号： H05B33/0893

摘要： An LED is connected to a power supply circuit, and a Zener diode is reverse-connected to the LED and then packaged in an LED package. When a load of the power supply circuit is lightened due to disconnection in the LED package, an output voltage of the power supply circuit shows a rising tendency. However, the power supply circuit limits the maximum voltage applied to the LED within a specified range between a forward voltage of the LED and a forward voltage+a Zener voltage of the Zener diode to prevent that a current flows through the Zener diode. As a result, no current flows through a resistor R1, then an NPN transistor is turned on, and then the LED acting as a disconnection sensing indicator lamp is turned on.

摘要翻译： LED连接到电源电路，并且齐纳二极管与LED反向连接，然后封装在LED封装中。 当由于LED封装中的断开而使电源电路的负载变轻时，电源电路的输出电压呈上升趋势。 然而，电源电路将施加到LED的最大电压限制在LED的正向电压和齐纳二极管的正向电压+齐纳电压之间的特定范围内，以防止电流流过齐纳二极管。 结果，没有电流流过电阻器R 1，则NPN晶体管导通，然后用作断路检测指示灯的LED导通。

公开(公告)号：US20060061301A1

公开(公告)日：2006-03-23

申请号：US11225250

申请日：2005-09-13

申请人： Masayasu Ito ,  Hitoshi Takeda

发明人： Masayasu Ito ,  Hitoshi Takeda

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0845

摘要： When an H signal of H/L binary signals is input into a control signal input terminal, a PWM signal is output from a multivibrator. When this PWM signal is input into a power supply circuit via a voltage converter circuit, such a control is repeated that a rated current flows through an LED at an ON time of the PWM signal and a supply of current to the LED is stopped at an OFF time of the PWM signal. An average current flowing through the LED is lowered and thus an emission of light is weakened, nevertheless an emitted light of the LED can be kept white because the rated current is supplied to the LED while the LED emits the light.

摘要翻译： 当H / L二进制信号的H信号被输入到控制信号输入端时，从多谐振荡器输出PWM信号。 当该PWM信号通过电压转换器电路输入到电源电路时，重复这样的控制，即在PWM信号的接通时间内，额定电流流过LED，并且在LED的电流被停止 OFF时间。 流过LED的平均电流降低，因此光的发射被削弱，然而由于在LED发光的同时向LED提供额定电流，LED的发射光可以保持白色。

公开(公告)号：US20060055245A1

公开(公告)日：2006-03-16

申请号：US11217883

申请日：2005-09-01

申请人： Masayasu Ito ,  Hitoshi Takeda

发明人： Masayasu Ito ,  Hitoshi Takeda

IPC分类号： B60L1/14 ,  B60Q1/26

CPC分类号： H05B33/0812 ,  H05B33/0845

摘要： A PMOS transistor is inserted in a circuit connecting a power supply terminal of a power supply circuit and a battery terminal. When a control signal input terminal goes to a low level, it is decided that a PWM signal or an H control signal is input into the control signal input terminal. Then, transistors are turned on, and then the PMOS transistor is turned on to apply a battery voltage to the power supply circuit via a power supply terminal, whereby a supply of current to an LED is controlled by the control signal. When the control signal input terminal goes to a high level, it is decided that an L control signal is input as the control signal. Then, the transistors are turned off, and then the PMOS transistor is turned off to cut off a power supply to the power supply circuit from a battery, whereby a dark current can be prevented from flowing through the power supply circuit when the LED is turned off.

摘要翻译： PMOS晶体管插入连接电源电路的电源端子和电池端子的电路中。 当控制信号输入端子变为低电平时，决定将PWM信号或H控制信号输入到控制信号输入端子。 然后，晶体管导通，然后PMOS晶体管导通，经由电源端子向电源电路施加电池电压，由此通过控制信号控制向LED供电的电流。 当控制信号输入端子变为高电平时，决定输入L控制信号作为控制信号。 然后，晶体管截止，然后关断PMOS晶体管，以从电池切断对电源电路的电源，由此当LED转向时，可以防止暗电流流过电源电路 关闭

公开(公告)号：US06989635B2

公开(公告)日：2006-01-24

申请号：US10670822

申请日：2003-09-25

申请人： Kazuhito Iwaki ,  Hitoshi Takeda ,  Masayasu Ito

发明人： Kazuhito Iwaki ,  Hitoshi Takeda ,  Masayasu Ito

IPC分类号： B60Q1/02

CPC分类号： H05B33/0809 ,  H05B33/0812 ,  H05B33/0818 ,  H05B33/0845 ,  Y02B20/341 ,  Y02B20/345 ,  Y10S362/80 ,  Y10S362/801 ,  Y10S362/806

摘要： A vehicular lamp used in a vehicle, includes: a light source for emitting light in accordance with power given thereto; a lamp body for accommodating the light source and protecting the light source from water; a first resistor provided in the outside of the lamp body and connected in series with the light source; and a current limiting circuit, provided in the inside of the lamp body, for preventing an excess current supplied to the light source in a case where dump surge occurs in a supplied voltage or current to be supplied to the light source.

摘要翻译： 一种用于车辆的车灯包括：用于根据给予的功率发光的光源; 用于容纳光源并保护光源免受水的灯体; 第一电阻器，设置在灯体的外部并与光源串联连接; 以及设置在灯体内部的电流限制电路，用于防止在提供给光源的供给电压或电流中发生倾倒电压的情况下供给到光源的过剩电流。

公开(公告)号：US20050248282A1

公开(公告)日：2005-11-10

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： B60Q1/04 ,  B60Q1/00 ,  H05B41/24 ,  H05B41/282 ,  H05B41/38

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：US06963177B2

公开(公告)日：2005-11-08

申请号：US10825408

申请日：2004-04-15

申请人： Masayasu Ito ,  Kouichi Isobe

发明人： Masayasu Ito ,  Kouichi Isobe

IPC分类号： B60Q1/00 ,  B60Q11/00 ,  H01L33/00 ,  H05B33/08 ,  H05B37/03 ,  G05F1/00

CPC分类号： H05B33/0845 ,  B60Q11/005 ,  H05B33/0884

摘要： A vehicular lamp used for a vehicle includes a semiconductor light emitting element for emitting light, a resistor for current detection for causing a current detection voltage in response to a current flowing through the semiconductor light emitting element, the resistor being coupled in series to the semiconductor light emitting element, a serial diode being coupled in series to the resistor for current detection and the semiconductor light emitting element in a forward direction, and an open circuit detecting unit for detecting an open circuit of the semiconductor light emitting element based on a sum voltage, which is a sum of a forward voltage of the serial diode and the current detection voltage.

摘要翻译： 用于车辆的车灯包括用于发射光的半导体发光元件，用于电流检测的电阻器，用于响应于流过半导体发光元件的电流引起电流检测电压，该电阻器与半导体串联耦合 发光元件，串联二极管串联耦合到用于电流检测的电阻器和正向的半导体发光元件;以及开路检测单元，用于基于和电压来检测半导体发光元件的开路 ，其是串联二极管的正向电压和电流检测电压的和。

公开(公告)号：US20050236999A1

公开(公告)日：2005-10-27

申请号：US11108702

申请日：2005-04-19

申请人： Masayasu Ito ,  Kentarou Murakami

发明人： Masayasu Ito ,  Kentarou Murakami

IPC分类号： B60Q1/00 ,  H05B33/08 ,  H05B41/36

CPC分类号： H05B33/0815 ,  H05B33/0845

摘要： There is provided a vehicular lamp that can flow an electric current having a predetermined variation ratio into each of a plurality of semiconductor light-emitting element units and can individually illuminate each of the plurality of semiconductor light-emitting element units. The vehicular lamp includes a first and a second semiconductor light-emitting element units that are connected to each other in parallel, a switching regulator transformer operable to supply electric power to the first and the second semiconductor light-emitting element units, a first secondary side transformer that magnetically couples a first power supply path from the switching regulator transformer to the first semiconductor light-emitting element unit and a second power supply path from the switching regulator transformer to the second semiconductor light-emitting element unit in order to regulate a current variation ratio between these paths, and a first switch operable to control whether the power is supplied to the first semiconductor light-emitting element unit, in which the first switch is provided at least on the first power supply path.

摘要翻译： 提供一种车灯，其可以将具有预定变化比例的电流流动到多个半导体发光元件单元中的每一个中，并且可以分别照亮多个半导体发光元件单元中的每一个。 车灯包括并联连接的第一和第二半导体发光元件单元，可操作地向第一和第二半导体发光元件单元供给电力的开关调节变压器，第一二次侧 变压器，其将第一电源路径从开关调节器变压器耦合到第一半导体发光元件单元，以及从开关调节器变压器到第二半导体发光元件单元的第二电源路径，以便调节电流变化 这些路径之间的比率，以及第一开关，其可操作以控制是否向第一半导体发光元件单元供电，其中第一开关至少设置在第一电源路径上。

公开(公告)号：US20050201115A1

公开(公告)日：2005-09-15

申请号：US11076782

申请日：2005-03-10

申请人： Masayasu Ito ,  Hitoshi Takeda

发明人： Masayasu Ito ,  Hitoshi Takeda

IPC分类号： F21S8/10 ,  B60Q1/00 ,  B60Q1/04 ,  B60Q1/26 ,  F21S8/12 ,  F21V5/04 ,  F21V7/08 ,  F21V19/00 ,  F21V29/15 ,  F21W101/10 ,  F21Y101/02 ,  H05B37/02

CPC分类号： B60Q1/0088 ,  F21S41/147 ,  F21S41/192

摘要： There is provided a vehicular lamp that can be miniaturized and can efficiently radiate heat of a light-emitting diode element. A vehicular lamp that is used for a vehicle includes a plurality of light source modules for emitting light. Each of the plurality of light source modules includes a semiconductor light-emitting element, a lighting circuit operable to control an electric current flowing into the semiconductor light-emitting element to turn the semiconductor light-emitting element on and off, a power cable operable to supply electric power from a power source located in the outside of the vehicular lamp to the lighting circuit, a control cable operable to transmit a control signal that controls turning the semiconductor light-emitting element on and off to the lighting circuit, and a mounting substrate that mounts the semiconductor light-emitting element and the lighting circuit. One of the light source modules is connected to the power source by means of the power cable, and the light source modules other than the one light source module are connected to the one light source module in parallel via the power cable in the vehicular lamp.

摘要翻译： 提供了可以小型化并且可以有效地辐射发光二极管元件的热量的车灯。 用于车辆的车灯包括用于发光的多个光源模块。 多个光源模块中的每一个包括半导体发光元件，可操作以控制流入半导体发光元件的电流以使半导体发光元件接通和断开的点亮电路，可操作为 将来自位于车辆灯外部的电源的电力供给到照明电路;控制电缆，其可操作以传输控制信号，所述控制信号控制将所述半导体发光元件接通和断开到所述照明电路;以及安装基板 其安装半导体发光元件和照明电路。 其中一个光源模块通过电力电缆连接到电源，除了一个光源模块之外的光源模块通过车灯中的电力电缆并联连接到一个光源模块。