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1. 发明申请

US20080157678A1 LIGHT EMITTING DEVICE DRIVE CIRCUIT AND VEHICLE LAMP USING THE SAME 有权
标题翻译：发光装置驱动电路和使用相同的车灯
公开(公告)号：US20080157678A1
公开(公告)日：2008-07-03
申请号：US11962726
申请日：2007-12-21
申请人： Masayasu Ito , Yoshihiro Uchiyama , Takanori Namba
发明人： Masayasu Ito , Yoshihiro Uchiyama , Takanori Namba
IPC分类号： B60Q1/00
CPC分类号： H05B33/08
摘要： A light emitting device drive circuit includes: a power conversion unit for receiving an input electric power and performing an electric power conversion on the input electric power in accordance with a control signal so as to generate the predetermined output current; a current detection unit for detecting an output current IL of the power conversion unit; a temperature detection unit for detecting a case internal temperature TD, which is an interior temperature of a case for accommodating the light emitting device drive circuit; a regulation unit being operable to a) detect whether a temperature TL of the light emitting device has reached a first predetermined temperature TLmax based on TD, IL, and a temperature rise coefficient a relative to IL, the temperature rise coefficient a being set in advance so that TL satisfies a relationship of TL=TD+α·IL, and b) generate a regulation signal for reducing a predetermined output current IL0 so that TL does not exceed TLmax in the event that a result of the detection indicates that TL has reached TLmax; and a control unit for controlling IL0 in accordance with the regulation signal from the regulation unit.
摘要翻译：发光器件驱动电路包括：电力转换单元，用于接收输入电力，并根据控制信号对输入电力进行电力转换，以产生预定的输出电流; 电流检测单元，用于检测电力转换单元的输出电流IL; 温度检测单元，用于检测作为用于容纳发光装置驱动电路的壳体的内部温度的壳体内部温度TD; 调节单元，其可操作以：a）检测所述发光装置的温度TL是否已经基于TD，IL达到第一预定温度TLmax，以及相对于IL的升温系数a，预先设定所述升温系数a 使得TL满足TL = TD + alpha.IL的关系，并且b）产生用于减小预定输出电流IL0的调节信号，使得在检测结果指示TL达到的情况下，TL不超过TLmax TLmax; 以及控制单元，用于根据来自调节单元的调节信号来控制IL0。

2. 发明授权

US07868563B2 Light emitting device drive circuit and vehicle lamp using the same 有权
标题翻译：发光装置驱动电路和使用其的车灯
公开(公告)号：US07868563B2
公开(公告)日：2011-01-11
申请号：US11962726
申请日：2007-12-21
申请人： Masayasu Ito , Yoshihiro Uchiyama , Takanori Namba
发明人： Masayasu Ito , Yoshihiro Uchiyama , Takanori Namba
IPC分类号： G05F1/00
CPC分类号： H05B33/08
摘要： A light emitting device drive circuit includes: a power conversion unit for receiving an input electric power and performing an electric power conversion on the input electric power in accordance with a control signal so as to generate the predetermined output current; a current detection unit for detecting an output current IL of the power conversion unit; a temperature detection unit for detecting a case internal temperature TD, which is an interior temperature of a case for accommodating the light emitting device drive circuit; a regulation unit being operable to a) detect whether a temperature TL of the light emitting device has reached a first predetermined temperature TLmax based on TD, IL, and a temperature rise coefficient α relative to IL, the temperature rise coefficient α being set in advance so that TL satisfies a relationship of TL=TD+α·IL, and b) generate a regulation signal for reducing a predetermined output current IL0 so that TL does not exceed TLmax in the event that a result of the detection indicates that TL has reached TLmax; and a control unit for controlling IL0 in accordance with the regulation signal from the regulation unit.
摘要翻译：发光器件驱动电路包括：电力转换单元，用于接收输入电力，并根据控制信号对输入电力进行电力转换，以产生预定的输出电流; 电流检测单元，用于检测电力转换单元的输出电流IL; 温度检测单元，用于检测作为用于容纳发光装置驱动电路的壳体的内部温度的壳体内部温度TD; 调节单元，其可操作以：a）检测所述发光装置的温度TL是否已经基于TD，IL达到第一预定温度TLmax，以及相对于IL的升温系数α，预先设定所述升温系数α 使得TL满足TL = TD +α·IL的关系，并且b）产生用于减小预定输出电流IL0的调节信号，使得在检测结果指示TL达到的情况下，TL不超过TLmax TLmax; 以及控制单元，用于根据来自调节单元的调节信号来控制IL0。

3. 发明申请

US20130278165A1 SEMICONDUCTOR LIGHT SOURCE LIGHTING CIRCUIT 有权
标题翻译：半导体光源照明电路
公开(公告)号：US20130278165A1
公开(公告)日：2013-10-24
申请号：US13856492
申请日：2013-04-04
申请人： Satoshi Kikuchi , Takanori Namba , Masayasu Ito
发明人： Satoshi Kikuchi , Takanori Namba , Masayasu Ito
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0848
摘要： A semiconductor light source lighting circuit is provided with: a switching regulator that generates a drive current of a semiconductor light source using a switching element; and a control circuit that controls ON/OFF of the switching element. The control circuit is provided with: a comparator that compares the drive current and a target value; a counter that counts a digital value in a count direction determined by a comparison result of the comparator; a digital-analog converter that converts the digital value into an analog signal; and a drive circuit that controls the ON/OFF of the switching element based on the analog signal. The counter counts the digital value at a speed determined by an ON/OFF cycle of the switching element.
摘要翻译：半导体光源点亮电路设置有：使用开关元件产生半导体光源的驱动电流的开关调节器; 以及控制开关元件的ON / OFF的控制电路。该控制电路具有：比较器，用于比较驱动电流和目标值; 计数器，其通过比较器的比较结果确定的计数方向对数字值进行计数; 数字模拟转换器，将数字值转换为模拟信号; 以及驱动电路，其基于模拟信号来控制开关元件的接通/断开。计数器以由开关元件的ON / OFF周期确定的速度对数字值进行计数。

4. 发明授权

US07919925B2 Lighting control device of lighting device for vehicle 有权
标题翻译：车辆照明装置照明控制装置
公开(公告)号：US07919925B2
公开(公告)日：2011-04-05
申请号：US12167532
申请日：2008-07-03
申请人： Masayasu Ito , Takanori Namba
发明人： Masayasu Ito , Takanori Namba
IPC分类号： B60Q1/02 , B60L1/14
CPC分类号： H05B33/0887 , H05B33/0815 , H05B33/0827
摘要： In a process in which a control signal having a low level is output from an ON/OFF control circuit to series regulators connected to LEDs serving as lighting targets to turn ON the LEDs in accordance with digital communication information, the ON/OFF control circuit calculates a specified current value to be supplied to the LEDs serving as the lighting targets and compares the specified current value with a detected current value which is detected by a current detecting circuit, and outputs a stop signal to a control circuit on the assumption that a current flows without the series regulators with grounding generated on a cathode side of any of LEDs when the detected current value is greater than the specified current value. When the control circuit turns OFF an NMOS transistor in response to the stop signal, an operation of a switching regulator is stopped.
摘要翻译：在具有低电平的控制信号从ON / OFF控制电路输出到连接到用作照明目标的LED的串联调节器以根据数字通信信息接通LED的过程中，ON / OFF控制电路计算指定的电流值被提供给用作点亮目标的LED，并将指定的电流值与由电流检测电路检测到的检测电流值进行比较，并且在假定电流检测电路当检测到的电流值大于指定的电流值时，没有串联调节器流过在任何LED的阴极侧产生的接地。当控制电路响应于停止信号使NMOS晶体管断开时，停止开关调节器的操作。

5. 发明申请

US20090009088A1 LIGHTING CONTROL DEVICE OF LIGHTING DEVICE FOR VEHICLE 有权
标题翻译：用于车辆的照明装置的照明控制装置
公开(公告)号：US20090009088A1
公开(公告)日：2009-01-08
申请号：US12167532
申请日：2008-07-03
申请人： Masayasu Ito , Takanori Namba
发明人： Masayasu Ito , Takanori Namba
IPC分类号： H05B37/02 , H05B41/36
CPC分类号： H05B33/0887 , H05B33/0815 , H05B33/0827
摘要： In a process in which a control signal having a low level is output from an ON/OFF control circuit to series regulators connected to LEDs serving as lighting targets to turn ON the LEDs in accordance with digital communication information, the ON/OFF control circuit calculates a specified current value to be supplied to the LEDs serving as the lighting targets and compares the specified current value with a detected current value which is detected by a current detecting circuit, and outputs a stop signal to a control circuit on the assumption that a current flows without the series regulators with grounding generated on a cathode side of any of LEDs when the detected current value is greater than the specified current value. When the control circuit turns OFF an NMOS transistor in response to the stop signal, an operation of a switching regulator is stopped.
摘要翻译：在具有低电平的控制信号从ON / OFF控制电路输出到连接到用作照明目标的LED的串联调节器以根据数字通信信息接通LED的过程中，ON / OFF控制电路计算指定的电流值被提供给用作点亮目标的LED，并将指定的电流值与由电流检测电路检测到的检测电流值进行比较，并且在假定电流检测电路当检测到的电流值大于指定的电流值时，没有串联调节器流过在任何LED的阴极侧产生的接地。当控制电路响应于停止信号使NMOS晶体管断开时，停止开关调节器的操作。

6. 发明授权

US09226349B2 Semiconductor light source lighting circuit 有权
标题翻译：半导体光源照明电路
公开(公告)号：US09226349B2
公开(公告)日：2015-12-29
申请号：US13856492
申请日：2013-04-04
申请人： Satoshi Kikuchi , Takanori Namba , Masayasu Ito
发明人： Satoshi Kikuchi , Takanori Namba , Masayasu Ito
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B33/0815 , H05B33/0848
摘要： A semiconductor light source lighting circuit is provided with: a switching regulator that generates a drive current of a semiconductor light source using a switching element; and a control circuit that controls ON/OFF of the switching element. The control circuit is provided with: a comparator that compares the drive current and a target value; a counter that counts a digital value in a count direction determined by a comparison result of the comparator; a digital-analog converter that converts the digital value into an analog signal; and a drive circuit that controls the ON/OFF of the switching element based on the analog signal. The counter counts the digital value at a speed determined by an ON/OFF cycle of the switching element.
摘要翻译：半导体光源点亮电路设置有：使用开关元件产生半导体光源的驱动电流的开关调节器; 以及控制开关元件的ON / OFF的控制电路。该控制电路具有：比较器，用于比较驱动电流和目标值; 计数器，其通过比较器的比较结果确定的计数方向对数字值进行计数; 数字模拟转换器，将数字值转换为模拟信号; 以及驱动电路，其基于模拟信号来控制开关元件的接通/断开。计数器以由开关元件的ON / OFF周期确定的速度对数字值进行计数。

7. 发明授权

US08947017B2 Semiconductor light source lighting circuit 有权
标题翻译：半导体光源照明电路
公开(公告)号：US08947017B2
公开(公告)日：2015-02-03
申请号：US13644517
申请日：2012-10-04
申请人： Satoshi Kikuchi , Fuminori Shiotsu , Takanori Namba , Masayasu Ito
发明人： Satoshi Kikuchi , Fuminori Shiotsu , Takanori Namba , Masayasu Ito
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B33/089 , H05B33/0815
摘要： A circuit for lighting a semiconductor light source is provided. The circuit includes: a switching regulator including a switching element and configured to generate a drive current for the semiconductor light source using the switching element; and a control circuit configured to control on-off of the switching element such that the magnitude of the drive current comes close to a targeted value. The control circuit includes: a comparator configured to compare the magnitude of the drive current with the targeted value; an up/down counter configured to count a digital value in a counting-up direction or counting-down direction, based on a comparison result of the comparator; a digital-to-analog converter configured to convert the counted digital value into an analog signal; and a drive circuit configured to control on/off of the switching element based on the analog signal.
摘要翻译：提供一种照明半导体光源的电路。该电路包括：开关调节器，包括开关元件，并且被配置为使用开关元件产生用于半导体光源的驱动电流; 以及控制电路，被配置为控制所述开关元件的导通截止，使得所述驱动电流的大小接近目标值。控制电路包括：比较器，被配置为将驱动电流的大小与目标值进行比较; 配置为基于比较器的比较结果对计数向上或倒数方向的数字值进行计数的上/下计数器; 配置为将所计数的数字值转换为模拟信号的数模转换器; 以及驱动电路，被配置为基于所述模拟信号来控制所述开关元件的开/关。

8. 发明授权

US07291989B2 Lighting control circuit for vehicle lighting equipment 失效
标题翻译：汽车照明设备照明控制电路
公开(公告)号：US07291989B2
公开(公告)日：2007-11-06
申请号：US11296050
申请日：2005-12-06
申请人： Takanori Namba , Masayasu Ito
发明人： Takanori Namba , Masayasu Ito
IPC分类号： H05B37/02
CPC分类号： H05B33/0887 , H05B33/0815 , Y02B20/341
摘要： This disclosure relates to protecting a switching regulator by sensing immediately a change in an input voltage when the input voltage of the switching regulator is changed suddenly. When an input voltage of a switching regulator 12 is changed suddenly and an interrupt request signal IRQ is provided from an input voltage sensing circuit 16 while electromagnetic energy accumulated in the switching regulator 12 is discharged to an output block 14 by turning ON/OFF a switch SW1 in accordance with a switching signal generated by a microcomputer 18, to control a lighting of an LED1, the microcomputer 18 reduces an ON duty of the switching signal provided to the switch SW1 in response to the interrupt request signal IRQ and limits an increase of a peak value of a current flowing through a primary side of the switching regulator 12.
摘要翻译：本公开涉及当开关调节器的输入电压突然改变时，立即感测到输入电压的变化来保护开关调节器。当开关调节器12的输入电压突然改变并且从输入电压检测电路16提供中断请求信号IRQ时，同时开关调节器12中累积的电磁能量通过接通/断开来将开关放电到输出块14 SW 1根据由微计算机18产生的切换信号，为了控制LED1的点亮，微型计算机18响应于中断请求信号IRQ和限制而降低提供给开关SW 1的开关信号的导通占空比流过开关调节器12的初级侧的电流的峰值的增加。

9. 发明申请

US20070170876A1 Lighting control apparatus for vehicle lighting device 失效
标题翻译：车辆照明装置用照明控制装置
公开(公告)号：US20070170876A1
公开(公告)日：2007-07-26
申请号：US11656842
申请日：2007-01-23
申请人： Masayasu Ito , Takanori Namba
发明人： Masayasu Ito , Takanori Namba
IPC分类号： H05B39/00
CPC分类号： H05B33/0893 , H05B33/0815
摘要： A lighting control apparatus and a method of lighting control for a vehicle lighting device includes a semiconductor light source including a semiconductor light emitting element; and a current supply controller coupled between a power supply and the semiconductor light source. Supply of a current from the power supply to the semiconductor light source is restricted by the current supply controller during a current restriction period to a value smaller than a prescribed current. A microcomputer compares a forward voltage generated from the semiconductor light source during the current restriction period with an abnormality determination value to determine whether or not an abnormality occurs due to a change of the forward voltage of the semiconductor light source.
摘要翻译：照明控制装置和车辆照明装置的照明控制方法包括：半导体光源，包括半导体发光元件; 以及耦合在电源和半导体光源之间的电流供应控制器。从电源向半导体光源的电流的供给在电流限制期间被电流供给控制器限制为小于规定电流的值。微型计算机将在当前限制期间从半导体光源产生的正向电压与异常判定值进行比较，以确定是否由于半导体光源的正向电压的变化而发生异常。

10. 发明申请

US20070030138A1 Lighting control apparatus for vehicle lamp 有权
标题翻译：车灯照明控制装置
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％。

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