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公开(公告)号：US20110248647A1
公开(公告)日：2011-10-13
申请号：US13083170
申请日：2011-04-08
IPC分类号： H05B37/02
CPC分类号： H02M1/36 , H02M3/156 , H05B33/0815 , H05B33/0821 , H05B33/0887
摘要： A lighting device reliably detects a status (i.e., existence or absence) of a load connection, and enables or disables power output based on the detected load connection status. The device includes a DC-DC converter having input and output terminals, and a DC current conducting element coupled across the output terminals. A load terminal is also coupled across the output terminals and configured to receive an LED unit. A load detection circuit coupled between an input terminal and the load terminal detects the connection status of an LED unit via a DC current passing through the load terminal, and controls a switching operation of the DC-DC converter based on the detected connection status. A diode coupled between the load terminal and the DC current conducting element blocks a DC current path from the input terminals to the load detection circuit through the DC current conducting element.
摘要翻译： 照明装置可靠地检测负载连接的状态（即，是否存在），并且基于检测到的负载连接状态来启用或禁用电力输出。 该装置包括具有输入和输出端子的DC-DC转换器和耦合在输出端子两端的直流电流传导元件。 负载端子也耦合在输出端子之间并被配置为接收LED单元。 耦合在输入端子和负载端子之间的负载检测电路经由穿过负载端子的直流电流来检测LED单元的连接状态，并且基于检测到的连接状态来控制DC-DC转换器的切换操作。 耦合在负载端子和直流导电元件之间的二极管通过直流电导体元件阻挡从输入端子到负载检测电路的直流电流路径。
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公开(公告)号：US5942859A
公开(公告)日：1999-08-24
申请号：US865561
申请日：1997-05-29
申请人： Akio Okude , Kouji Noro , Hiromitsu Mizukawa , Jun Kumagai
发明人： Akio Okude , Kouji Noro , Hiromitsu Mizukawa , Jun Kumagai
IPC分类号： H05B41/285 , H05B41/36 , H05B37/02
CPC分类号： H05B41/36 , H05B41/2855
摘要： A discharge lamp lighting device include an inverter circuit section supplying a square wave AC power from a DC power source to a discharge lamp, and a high voltage pulse generating unit applying, upon starting, a high voltage pulse to the discharge lamp to have it started, with an arrangement for lighting the discharge lamp by the square wave AC power made to be lower in the square wave frequency upon non-loading than that upon lighting, and controlling the square wave frequency to remain as that upon the non-loading for a fixed period immediately after detection of the start of discharge of the lamp.
摘要翻译： 放电灯点亮装置包括从直流电源向放电灯提供方波交流电力的逆变器电路部，以及高压脉冲发生部，其在启动时向放电灯施加高电压脉冲使其起动 具有通过与非点亮时不同的矩形波频率的方波交流电源照明放电灯的布置，并且控制方波频率保持为不加载时的方波频率 在检测到灯的放电开始后立即固定的时间段。
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公开(公告)号：US08482222B2
公开(公告)日：2013-07-09
申请号：US13083170
申请日：2011-04-08
CPC分类号： H02M1/36 , H02M3/156 , H05B33/0815 , H05B33/0821 , H05B33/0887
摘要： A lighting device reliably detects a status (i.e., existence or absence) of a load connection, and enables or disables power output based on the detected load connection status. The device includes a DC-DC converter having input and output terminals, and a DC current conducting element coupled across the output terminals. A load terminal is also coupled across the output terminals and configured to receive an LED unit. A load detection circuit coupled between an input terminal and the load terminal detects the connection status of an LED unit via a DC current passing through the load terminal, and controls a switching operation of the DC-DC converter based on the detected connection status. A diode coupled between the load terminal and the DC current conducting element blocks a DC current path from the input terminals to the load detection circuit through the DC current conducting element.
摘要翻译： 照明装置可靠地检测负载连接的状态（即，是否存在），并且基于检测到的负载连接状态来启用或禁用电力输出。 该装置包括具有输入和输出端子的DC-DC转换器和耦合在输出端子两端的直流电流传导元件。 负载端子也耦合在输出端子之间并被配置为接收LED单元。 耦合在输入端子和负载端子之间的负载检测电路经由穿过负载端子的直流电流来检测LED单元的连接状态，并且基于检测到的连接状态来控制DC-DC转换器的切换操作。 耦合在负载端子和直流导电元件之间的二极管通过直流电导体元件阻挡从输入端子到负载检测电路的直流电流路径。
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14.发明申请LED DRIVER CIRCUIT WITH OPEN LOAD DETECTION AND ASSOCIATED CONTROL METHOD 有权具有开路负载检测和相关控制方法的LED驱动电路公开(公告)号：US20110204823A1
公开(公告)日：2011-08-25
申请号：US13031836
申请日：2011-02-22
IPC分类号： H05B41/285
CPC分类号： H05B33/089 , H05B33/0815 , Y02B20/347
摘要： An LED driver circuit prevents an increase in output voltage of a DC/DC converter in an open circuit condition associated with removal or failure of an LED lighting device. A DC power source provides a first DC voltage across positive and negative voltage rails. A DC/DC converter includes a switching element which when turned ON/OFF provides a second DC voltage across first and second ends of a capacitor which further define first and second LED lighting device connection terminals. A control circuit, upon receiving a drive power signal, turns ON/OFF the switching element to provide constant current control. A power supply circuit is coupled between the second LED lighting device connection terminal and the negative voltage rail and generates the drive power signal to the control circuit during a detected lighting condition. The power supply circuit further disables the drive power signal during a detected open circuit condition.
摘要翻译： LED驱动器电路防止在与LED照明装置的去除或故障相关的开路状态下DC / DC转换器的输出电压增加。 直流电源在正负电压轨上提供第一直流电压。 DC / DC转换器包括开关元件，其在接通/断开时提供跨越电容器的第一和第二端的第二DC电压，其进一步限定第一和第二LED照明器件连接端子。 控制电路在接收到驱动功率信号时，将开关元件接通/断开，以提供恒定的电流控制。 电源电路耦合在第二LED照明装置连接端子和负电压轨道之间，并且在检测到的照明条件期间产生到控制电路的驱动电力信号。 在检测到的开路状态期间，电源电路进一步禁止驱动电力信号。
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15.发明授权公开(公告)号：US08502463B2
公开(公告)日：2013-08-06
申请号：US13031836
申请日：2011-02-22
IPC分类号： H05B39/02
CPC分类号： H05B33/089 , H05B33/0815 , Y02B20/347
摘要： An LED driver circuit prevents an increase in output voltage of a DC/DC converter in an open circuit condition associated with removal or failure of an LED lighting device. A DC power source provides a first DC voltage across positive and negative voltage rails. A DC/DC converter includes a switching element which when turned ON/OFF provides a second DC voltage across first and second ends of a capacitor which further define first and second LED lighting device connection terminals. A control circuit, upon receiving a drive power signal, turns ON/OFF the switching element to provide constant current control. A power supply circuit is coupled between the second LED lighting device connection terminal and the negative voltage rail and generates the drive power signal to the control circuit during a detected lighting condition. The power supply circuit further disables the drive power signal during a detected open circuit condition.
摘要翻译： LED驱动器电路防止在与LED照明装置的去除或故障相关的开路状态下DC / DC转换器的输出电压增加。 直流电源在正负电压轨上提供第一直流电压。 DC / DC转换器包括开关元件，其在接通/断开时提供跨越电容器的第一和第二端的第二DC电压，其进一步限定第一和第二LED照明器件连接端子。 控制电路在接收到驱动功率信号时，将开关元件接通/断开，以提供恒定的电流控制。 电源电路耦合在第二LED照明装置连接端子和负电压轨道之间，并且在检测到的照明条件期间产生到控制电路的驱动电力信号。 在检测到的开路状态期间，电源电路进一步禁止驱动电力信号。
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公开(公告)号：US08390213B2
公开(公告)日：2013-03-05
申请号：US12697187
申请日：2010-01-29
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0809 , Y02B20/346 , Y02B20/348
摘要： An LED power-source circuit includes an input filter circuit including noise prevention capacitors and a line filter, a diode bridge connected to the input filter circuit, a smoothing capacitor connected to an output of the diode bridge and having a capacitance of 1 μF or less, a DC-DC conversion circuit connected to the smoothing capacitor, and an LED assembly connected to an output of the DC-DC conversion circuit. Grounding capacitors are coupled to ground from an input power line between the line filter and the diode bridge. The total capacitance from the input power line to ground is set to be 1/200 or less of that of the smoothing capacitor.
摘要翻译： LED电源电路包括具有防噪电容器和线路滤波器的输入滤波器电路，连接到输入滤波器电路的二极管电桥，连接到二极管桥的输出并具有1μF以下电容的平滑电容器 连接到平滑电容器的DC-DC转换电路和连接到DC-DC转换电路的输出的LED组件。 接地电容器从线路滤波器和二极管桥之间的输入电源线耦合到地。 从输入电源线到地线的总电容设置为平滑电容器的总电容的1/200以下。
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公开(公告)号：US20100231138A1
公开(公告)日：2010-09-16
申请号：US12697187
申请日：2010-01-29
IPC分类号： H05B41/36
CPC分类号： H05B33/0815 , H05B33/0809 , Y02B20/346 , Y02B20/348
摘要： An LED power-source circuit includes an input filter circuit including noise prevention capacitors and a line filter, a diode bridge connected to the input filter circuit, a smoothing capacitor connected to an output of the diode bridge and having a capacitance of 1 μF or less, a DC-DC conversion circuit connected to the smoothing capacitor, and an LED assembly connected to an output of the DC-DC conversion circuit. Grounding capacitors are coupled to ground from an input power line between the line filter and the diode bridge. The total capacitance from the input power line to ground is set to be 1/200 or less of that of the smoothing capacitor.
摘要翻译： LED电源电路包括具有防噪电容器和线路滤波器的输入滤波器电路，连接到输入滤波器电路的二极管电桥，连接到二极管桥的输出并具有1μF以下电容的平滑电容器 连接到平滑电容器的DC-DC转换电路和连接到DC-DC转换电路的输出的LED组件。 接地电容器从线路滤波器和二极管桥之间的输入电源线耦合到地。 从输入电源线到地线的总电容设置为平滑电容器的总电容的1/200以下。
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公开(公告)号：US09510411B2
公开(公告)日：2016-11-29
申请号：US13398023
申请日：2012-02-16
申请人： Miyo Hayashi , Hiromitsu Mizukawa
发明人： Miyo Hayashi , Hiromitsu Mizukawa
CPC分类号： H05B33/0821 , H05B33/089
摘要： An illumination device includes a light emitting unit; and a lighting circuit, to which the light emitting unit is installed, for supplying an output voltage to the light emitting unit. The light emitting unit includes a light emitting element which is connected to an output terminal of the lighting circuit and emits light by the output voltage supplied from the lighting circuit; and a current limiting unit which limits a current flowing into the light emitting element portion from the lighting circuit at the time when the light emitting unit is installed to the lighting circuit.
摘要翻译： 照明装置包括发光单元; 以及安装有发光单元的照明电路，用于向发光单元提供输出电压。 发光单元包括发光元件，该发光元件连接到点亮电路的输出端并通过从照明电路提供的输出电压发光; 以及电流限制单元，其限制在发光单元安装到点亮电路时从点灯电路流入发光元件部分的电流。
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公开(公告)号：US08957591B2
公开(公告)日：2015-02-17
申请号：US13405460
申请日：2012-02-27
申请人： Yoshinobu Murakami , Koji Nakagawara , Masahito Ohnishi , Masahiro Naruo , Shigeru Ido , Kazuhiro Nisimoto , Hiromitsu Mizukawa
发明人： Yoshinobu Murakami , Koji Nakagawara , Masahito Ohnishi , Masahiro Naruo , Shigeru Ido , Kazuhiro Nisimoto , Hiromitsu Mizukawa
CPC分类号： H05B33/0845 , H05B33/0815 , H05B33/0818 , Y02B20/383
摘要： An illumination system includes a lighting apparatus having a solid-state light emitting element as a light source; and a dimmer including a bidirectional switching element having a self-sustaining function and connected to a serial circuit of the lighting apparatus and an external power source. The dimmer varies a conduction angle of the bidirectional switching element by controlling a phase of an AC voltage of the external power source, wherein the lighting apparatus performs dimming of the light source based on the conduction angle of the bidirectional switching element, and the dimmer continues to apply driving current to the bidirectional switching element during a first period, which is a part of a second period, the bidirectional switching element being allowed to conduct throughout the second period.
摘要翻译： 照明系统包括具有固态发光元件作为光源的照明装置; 以及包括具有自持功能并连接到照明装置的串行电路和外部电源的双向开关元件的调光器。 调光器通过控制外部电源的AC电压的相位来改变双向开关元件的导通角，其中照明装置基于双向开关元件的导通角度对光源进行调光，并且调光器继续 在作为第二周期的一部分的第一周期期间将驱动电流施加到双向开关元件，双向开关元件被允许在整个第二周期内进行。
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20.发明授权公开(公告)号：US08664883B2
公开(公告)日：2014-03-04
申请号：US13187321
申请日：2011-07-20
IPC分类号： H05B37/02
CPC分类号： H05B37/0281 , H05B33/0815 , Y02B20/42
摘要： A lighting device is provided for lighting control of an LED module based on an externally provided dimming control signal. A chopper circuit includes a switch coupled across a DC input and an inductor which receives and stores energy when the switch is turned on, and discharges energy to the LED module when the switch is turned off. A control circuit determines a current value to the switch, and compares the current value to a predetermined value. During normal operation, the switch is turned off when the detected current value reaches the predetermined value and turned back on when inductor discharge has completed. During a dimming operation, the normal operation is intermittently disabled in accordance with the dimming control signal. The dimming control signal may be a low-frequency PWM signal, with the lighting output being dimmed as a result of a duty ratio of the PWM signal.
摘要翻译： 提供照明装置，用于基于外部提供的调光控制信号对LED模块进行照明控制。 斩波电路包括耦合在DC输入端的开关和当开关接通时接收和存储能量的电感器，并且当开关断开时，将能量放电到LED模块。 控制电路确定开关的当前值，并将当前值与预定值进行比较。 在正常工作期间，当检测到的电流值达到预定值时，开关断开，当电感放电完成时，开关转向导通。 在调光操作期间，根据调光控制信号间歇地禁用正常操作。 调光控制信号可以是低频PWM信号，由于PWM信号的占空比，照明输出变暗。
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