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公开(公告)号：US20160066388A1
公开(公告)日：2016-03-03
申请号：US14822054
申请日：2015-08-10
Inventor： Keisuke SEKI , Takeshi KAMOI , Daisuke YAMAHARA
IPC: H05B33/08
CPC classification number: H05B33/0815 , H02M3/33546 , H05B37/0227 , Y02B20/346
Abstract: Lighting apparatus includes: AC/DC converter which converts AC voltage Vac to DC voltage Vdc; DC/DC converter which converts DC voltage Vdc to a DC voltage to be applied to LED; and detection circuit which detects AC voltage Vac. DC/DC converter includes switching element, and control circuit that performs a control of repeatedly turning on and off switching element in a boundary conduction mode. Control circuit performs the control under which ON time Ton is kept from exceeding an upper limit that is previously determined, and raises the upper limit when AC voltage Vac detected by detection circuit falls below a predetermined value. ON time Ton is a period of time during which switching element is kept ON.
Abstract translation: 照明装置包括：将AC电压Vac转换为DC电压Vdc的AC / DC转换器; DC / DC转换器，其将DC电压Vdc转换为施加到LED的DC电压; 以及检测AC电压Vac的检测电路。 DC / DC转换器包括开关元件和控制电路，其执行在边界导通模式中重复接通和断开开关元件的控制。 控制电路进行使ON时刻Ton不超过预先确定的上限的控制，并且在检测电路检测到的交流电压Vac低于预定值的情况下升高上限。 接通时间Ton是开关元件保持接通的时间段。
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公开(公告)号：US20190132054A1
公开(公告)日：2019-05-02
申请号：US16168221
申请日：2018-10-23
Inventor： Shigeru IDO , Keisuke SEKI , Kazuhiko HAYASHI
IPC: H04B10/516 , H04L7/00 , H04B10/80
Abstract: A modulation device includes: a signal input circuit that receives an external input signal and outputs the signal downstream as a first signal; and an arithmetic processor positioned downstream of the signal input circuit. The arithmetic processor is configured to: determine when an external ID signal including ID information has been input as the first signal, and when determining that an external ID signal including ID information has been input as the first signal, acquire the ID information from the external ID signal, obtain transmission timing synchronizing with the first signal based on the external ID signal, and output a light source drive signal that drives a light source according to the ID information based on the transmission timing synchronizing with the input signal.
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公开(公告)号：US20180343057A1
公开(公告)日：2018-11-29
申请号：US15984368
申请日：2018-05-20
Inventor： Keisuke SEKI , Shigeru IDO , Kazuhiko HAYASHI
IPC: H04B10/116 , H05B33/08 , H05B37/02
CPC classification number: H04B10/116 , H02M1/14 , H02M1/4225 , H02M3/156 , H02M3/33507 , H02M2001/007 , H02M2001/008 , H04B10/502 , H05B33/0815 , H05B33/0824 , H05B33/0845 , H05B37/0272
Abstract: A lighting device includes: a constant current supply circuit; and a first modulation circuit and a second modulation circuit that are connected in series between output terminals of the constant current supply circuit. The first modulation circuit includes a first capacitor that is connected in parallel to the first modulation circuit. The second modulation circuit includes a second capacitor that is connected in parallel to the second modulation circuit.
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4.发明申请公开(公告)号：US20170339759A1
公开(公告)日：2017-11-23
申请号：US15596478
申请日：2017-05-16
Inventor： Keisuke SEKI
IPC: H05B33/08 , F21V3/00 , F21V19/00 , F21Y2115/10
CPC classification number: H05B33/0827 , F21S8/026 , F21V19/003 , F21Y2115/10 , H05B33/0803 , H05B33/0809 , H05B33/0866
Abstract: An emission control device includes: a switching circuit for switching which light-emitting element or light-emitting elements from among a plurality of light-emitting elements is supplied with current; a detection circuit which detects current or voltage supplied from a DC-power supply circuit; and a control circuit which controls the switching circuit to switch which of the light-emitting element or light-emitting elements from among the plurality of light-emitting elements is supplied with the current when a power switch is turned from on to off and back to on within a predefined period and the current or the voltage detected by the detection circuit is less than when the power switch is on.
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公开(公告)号：US20150173133A1
公开(公告)日：2015-06-18
申请号：US14572990
申请日：2014-12-17
Inventor： Keisuke SEKI , Takeshi KAMOI , Daisuke YAMAHARA
IPC: H05B33/08
CPC classification number: H05B33/0818
Abstract: A lighting device includes a constant-current circuit, a smoothing capacitor, a bypass circuit, a detection unit, and a bypass control unit. The constant-current circuit supplies a constant current to a plurality of solid-state light-emitting elements connected in series. The smoothing capacitor is connected between output terminals of the constant-current circuit. The bypass circuit is connected in parallel to one or more of the plurality of solid-state light-emitting elements. The detection unit detects whether the one or more solid-state light-emitting elements are open-circuited. When the detection unit detects that at least one of the one or more solid-state light-emitting elements is open-circuited, the bypass control unit discharges the smoothing capacitor during a discharge period to then bypass the one or more solid-state light-emitting elements through the bypass circuit.
Abstract translation: 照明装置包括恒流电路，平滑电容器，旁路电路，检测单元和旁路控制单元。 恒流电路向串联连接的多个固态发光元件供给恒定电流。 平滑电容器连接在恒流电路的输出端子之间。 旁路电路与多个固态发光元件中的一个或多个并联连接。 检测单元检测一个或多个固态发光元件是否开路。 当检测单元检测到一个或多个固态发光元件中的至少一个是开路时，旁路控制单元在放电期间对平滑电容器进行放电，从而绕过一个或多个固态发光元件， 通过旁路电路发射元件。
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180352625A1
公开(公告)日：2018-12-06
申请号：US15984385
申请日：2018-05-20
Inventor： Keisuke SEKI , Shigeru IDO , Kazuhiko HAYASHI
Abstract: Provided is a control circuit (modulation circuit) that receives output current determined based on a dimming signal, from a lighting device, consumes, as consumption current, part of the output current, and supplies supply current to a light-emitting element. The control circuit includes a regulator circuit that regulates the consumption current. The regulator circuit monotonously increases a magnitude of the consumption current relative to a magnitude of the output current.
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公开(公告)号：US20170339760A1
公开(公告)日：2017-11-23
申请号：US15596446
申请日：2017-05-16
Inventor： Keisuke SEKI
IPC: H05B33/08
CPC classification number: H05B33/0827 , H05B33/083 , H05B33/0866
Abstract: A lighting device is configured to be connected to a power switch and supply a plurality of light-emitting elements with current and includes: a DC-power supply circuit configured to supply the plurality of light-emitting elements with the current when the power switch is turned on; a switching circuit for switching which light-emitting element or light-emitting elements among the plurality of light-emitting elements is supplied with the current; a detection circuit which detects current or voltage supplied from the DC-power supply circuit; and a control circuit which controls the switching circuit to switch which of the light-emitting element or light-emitting elements from among the plurality of light-emitting elements is supplied with the current, when the power switch is turned from on to off and back to on within a predefined period and the current or the voltage detected by the detection circuit is less than when the power switch is on.
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公开(公告)号：US20170171931A1
公开(公告)日：2017-06-15
申请号：US15371583
申请日：2016-12-07
Inventor： Keisuke SEKI
IPC: H05B33/08
CPC classification number: H05B33/0845 , F21V23/001 , F21V23/009 , F21Y2115/10 , H05B33/0827 , H05B33/0857 , H05B33/0866 , H05B33/0887
Abstract: A light-emitting apparatus includes: a light source unit to which constant current corresponding to a dimming level is supplied from a constant current supply (dimming LED driver), and which includes a first light-emitting element column and a second light-emitting element column connected in parallel with the first light-emitting element column; a first detector circuit (resistor) which is connected in series to the first light-emitting element column, and detects a magnitude of a current flowing through the first light-emitting element column; a current adjuster circuit which adjusts a relationship of the magnitude of the current flowing through the first light-emitting element column to the constant current, based on the magnitude of the detected current; and a relationship adjuster circuit (variable resistor) which adjusts the dimming level at a changing point where a relationship of the magnitude of the current flowing through the first light-emitting element column to the dimming level changes.
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公开(公告)号：US20160150609A1
公开(公告)日：2016-05-26
申请号：US14944272
申请日：2015-11-18
Inventor： Keisuke SEKI , Takeshi KAMOI , Daisuke YAMAHARA , Hiroyuki ASANO , Masafumi YAMAMOTO , Masato HIMEDA , Katsuyuki DOI
IPC: H05B33/08
CPC classification number: H05B33/0815 , H05B33/0812 , H05B33/0842 , Y02B20/343 , Y02B20/346
Abstract: A lighting device includes a rectifier circuit, a conversion circuit and a control circuit. A first inductor of a first series circuit and a second inductor of a second series circuit have inductances by which a time period, during which a diode is electrically conducted, is made shorter than a half period of a resonance period of a closed loop circuit. The closed loop circuit includes a first capacitor, the first inductor, a second capacitor and a third capacitor. The control circuit is configured to control a switching element in such a manner that the switching element is turned on at fixed periods.
Abstract translation: 照明装置包括整流电路，转换电路和控制电路。 第一串联电路的第一电感器和第二串联电路的第二电感器具有电感，通过该电感使二极管导通的时间周期短于闭环回路的谐振周期的半周期。 闭环电路包括第一电容器，第一电感器，第二电容器和第三电容器。 控制电路被配置为以这样的方式控制开关元件，使得开关元件以固定的周期接通。
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公开(公告)号：US20160066375A1
公开(公告)日：2016-03-03
申请号：US14824590
申请日：2015-08-12
Inventor： Keisuke SEKI , Takeshi KAMOI , Daisuke YAMAHARA
IPC: H05B33/08
CPC classification number: H05B33/0815 , H01L29/1608 , H02M1/42 , H02M3/33523 , H05B33/0812 , H05B33/0851 , H05B33/0896
Abstract: Lighting apparatus which supplies a current to solid-state light-emitting device (LED) includes: DC power supply circuit (AC/DC converter); and DC/DC converter that converts an output voltage of DC power supply circuit and applies, to solid-state light-emitting device, the output voltage converted. DC/DC converter includes: switching element; and DC/DC control circuit that performs a control of repeatedly turning ON and OFF switching element in a boundary conduction mode, and DC power supply circuit adjusts the output voltage to make a switching frequency of switching element higher than a first frequency, based on a forward voltage to be applied to solid-state light-emitting device.
Abstract translation: 向固态发光装置（LED）供给电流的照明装置包括：直流电源电路（AC / DC转换器）; DC / DC转换器，其对直流电源电路的输出电压进行转换，并将其转换为固态发光装置。 DC / DC转换器包括：开关元件; 以及直流/直流控制电路，其在边界导通模式中进行反复导通和断开开关元件的控制，并且直流电源电路基于以下步骤调整输出电压以使开关元件的开关频率高于第一频率 要施加到固态发光器件的正向电压。
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