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公开(公告)号：US20190104583A1
公开(公告)日：2019-04-04
申请号：US16139010
申请日：2018-09-22
Inventor： Hirofumi KONISHI , Kenichi FUKUDA , Masashi MOTOMURA , Kiyoshi OGASAWARA
IPC: H05B33/08
Abstract: A power supply system includes a power supply circuit and an output unit. The power supply circuit generates a pulsating voltage. The output unit is to be connected to a pair of electric wires to apply the pulsating voltage to the pair of electric wires. The power supply circuit generates the pulsating voltage such that the pulsating voltage has a full-wave rectified waveform obtained by full-wave rectifying an alternating voltage as a wave alternating between a positive voltage and a negative voltage.
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公开(公告)号：US20170305328A1
公开(公告)日：2017-10-26
申请号：US15479411
申请日：2017-04-05
Inventor： Kazuya KATO , Toshiaki NAKAMURA , Akihiro KISHIMOTO , Kenichi FUKUDA , Masaaki TAKAMATSU
IPC: B60Q1/14 , H05B33/08 , F21S8/10 , F21Y2115/10
CPC classification number: B60Q1/143 , B60Q1/0023 , B60Q1/0035 , B60Q1/0041 , B60Q1/0094 , B60Q2300/146 , F21S41/141 , F21S41/148 , F21S41/19 , F21S41/20 , F21S41/255 , F21S41/285 , F21S41/321 , F21S41/39 , F21Y2115/10 , H05B33/0854 , H05B33/089
Abstract: A lighting device includes a thermal sensor, power converter circuits and a control circuit. The thermal sensor is configured to measure an internal temperature of a case. The power converter circuits are housed in the case and configured to be connected with different types of light sources, respectively. The control circuit is housed in the case and has priorities that are provided with respect to the different types of light sources according to their respective types. The control circuit is configured to, when the internal temperature is greater than a threshold, control the respective outputs of the power converter circuits so as to preferentially decrease an output for a light source corresponding to a first priority.
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公开(公告)号：US20160073469A1
公开(公告)日：2016-03-10
申请号：US14831398
申请日：2015-08-20
Inventor： Kenichi FUKUDA , Sana YAGI
IPC: H05B33/08
CPC classification number: H05B33/0857 , H05B33/0815 , H05B33/0863
Abstract: A lighting device includes: a first input terminal for receiving an AC voltage phase-controlled by a first phase-control dimmer; a first light source unit which emits light of a first color; a second light source unit which emits light of a second color different from the first color; a control circuit which controls a total amount of light emitted from the first and second light source units and the color of combined light including the light emitted from the first and second light source units. The control signal includes first and second control information. The first control information is for controlling either one of the total amount of light and the color of combined light, and corresponds to the conduction angle of the first phase-control dimmer. The second control information is for controlling the other of the total amount of light and the color of combined light.
Abstract translation: 照明装置包括：第一输入端子，用于接收由第一相位控制调光器相位控制的AC电压; 第一光源单元，其发射第一颜色的光; 第二光源单元，其发射与第一颜色不同的第二颜色的光; 控制电路，其控制从第一和第二光源单元发射的光的总量以及包括从第一和第二光源单元发射的光的组合光的颜色。 控制信号包括第一和第二控制信息。 第一控制信息用于控制总光量和组合光的颜色之一，并且对应于第一相位控制调光器的导通角。 第二控制信息用于控制总光量和组合光的颜色中的另一个。
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4.发明申请公开(公告)号：US20170318634A1
公开(公告)日：2017-11-02
申请号：US15494604
申请日：2017-04-24
Inventor： Masashi MOTOMURA , Hirofumi KONISHI , Kenichi FUKUDA
IPC: H05B33/08 , H02M7/04 , F21V23/06 , F21V21/34 , F21V3/00 , F21S8/04 , H05B37/02 , H02M3/158 , F21Y2115/10
CPC classification number: H05B33/0815 , F21S8/046 , F21V3/00 , F21V21/34 , F21V23/06 , F21Y2115/10 , H02M3/158 , H02M3/1588 , H02M7/04 , H02M2001/0048 , H05B33/0845 , H05B37/02
Abstract: A signal transmitting device includes an input unit, an output unit, and a step-down circuit. The input unit is configured to receive an input voltage. The output unit is configured to output an output voltage. The step-down circuit is configured to controllably adjust the output voltage by stepping down the input voltage. The step-down circuit includes first and second capacitors, a switch circuit, an inductor, first and second diodes, and a control circuit. The switch circuit includes a series circuit of first and second switches. The control circuit is configured to control the first and second switches to change a voltage value of the output voltage in order to transmit transmission data from the output unit.
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公开(公告)号：US20170188421A1
公开(公告)日：2017-06-29
申请号：US15373324
申请日：2016-12-08
Inventor： Masashi MOTOMURA , Hirofumi KONISHI , Kenichi FUKUDA
CPC classification number: H05B33/0815 , H05B33/0845 , H05B37/0272
Abstract: The signal transmitting device includes: a transmitter-side input for receiving a first DC voltage; a transmitter-side output for outputting a second DC voltage; and a voltage conversion circuit configured to convert the first DC voltage into the second DC voltage. Further, the signal transmitting device includes a control circuit configured to control the voltage conversion circuit so that the second DC voltage has a voltage value (selected from a first voltage value and a second voltage value) which changes according to transmission data in a predetermined transmission period.
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Patent Agency Ranking
公开(公告)号：US20170223790A1
公开(公告)日：2017-08-03
申请号：US15406848
申请日：2017-01-16
Inventor： Masashi MOTOMURA , Hirofumi KONISHI , Kenichi FUKUDA
IPC: H05B33/08
CPC classification number: H05B33/0815 , H05B33/0884
Abstract: A power supply includes an input for receiving a first DC voltage, an output for outputting a second DC voltage, a voltage conversion circuit configured to convert the first DC voltage into the second DC voltage, and a control circuit configured to control the voltage conversion circuit to vary a voltage value of the second DC voltage. The control circuit is configured to control the voltage conversion circuit so as to decrease the voltage value of the second DC voltage from a first voltage value to a second voltage value for a predetermined duration every time a predetermined period elapses. The first voltage value is equal to or greater than a voltage value necessary to keep lighting a light source. The second voltage value is smaller than the voltage value necessary to keep lighting the light source.
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公开(公告)号：US20160270178A1
公开(公告)日：2016-09-15
申请号：US15047446
申请日：2016-02-18
Inventor： Masahiro NARUO , Kenichi FUKUDA , Shinji MAKIMURA , Akira NAKAJO
IPC: H05B33/08
CPC classification number: H05B33/0815 , H05B33/0827 , H05B33/0866
Abstract: A lighting device that supplies current to light-emitting units includes: a DC-to-DC converter; a switch unit connected to the light-emitting units; and a control circuit which controls the DC-to-DC converter and the switch unit. The DC-to-DC converter includes: an inductor through which current from the DC-to-DC converter is provided to the light-emitting units; and a first switch element connected in series with the inductor and which switches ON/OFF. The control circuit includes: a zero-crossing detector that detects that current flowing in the inductor is substantially zero due to the first switch element switching OFF, and outputs a zero-current detection signal; and a switch controller that selects one of the light-emitting units and controls the switch unit to cause the current from the DC-to-DC converter to be supplied to the selected light-emitting unit when the first switch element subsequently switches ON, each time the switch controller receives the zero-current detection signal.
Abstract translation: 向发光单元供电的照明装置包括：DC-DC转换器; 连接到发光单元的开关单元; 以及控制DC-DC转换器和开关单元的控制电路。 DC-DC转换器包括：电感器，通过该电感器将来自DC-DC转换器的电流提供给发光单元; 以及与电感器串联连接并且接通/断开的第一开关元件。 控制电路包括：过零检测器，其检测由于第一开关元件断开而在电感器中流动的电流基本为零，并输出零电流检测信号; 以及开关控制器，当所述第一开关元件随后接通时，选择所述发光单元中的一个并且控制所述开关单元使得来自所述DC-DC转换器的电流被提供给所选择的发光单元， 时间开关控制器接收零电流检测信号。
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公开(公告)号：US20190306952A1
公开(公告)日：2019-10-03
申请号：US16358270
申请日：2019-03-19
Inventor： Masashi MOTOMURA , Hirofumi KONISHI , Kenichi FUKUDA
Abstract: In a signal transmitter, a control circuit is configured to control a discharge switch and a control switch to transmit a transmission signal for causing the value of the output voltage to be a first voltage value or a second voltage value smaller than the first voltage value for each constant period. The control circuit controls the discharge switch and the control switch such that a voltage gradient becomes a prescribed gradient in a case where the control circuit changes the value of the output voltage from the first voltage value to the second voltage value.
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公开(公告)号：US20180070416A1
公开(公告)日：2018-03-08
申请号：US15694821
申请日：2017-09-03
Inventor： Kazuya KATO , Toshiaki NAKAMURA , Akihiro KISHIMOTO , Kenichi FUKUDA
CPC classification number: H05B33/089 , B60Q1/04 , B60Q11/005 , H05B33/0848 , H05B33/0854
Abstract: In a lighting device, when determining that both of a first measuring value and a second measuring value are not an abnormal value, a controller is configured to control an output of a power converter based on the first and second measuring values. The first measuring value is a temperature inside a main body of the lighting device, sensed by a first temperature sensor. The second measuring value is a temperature of a light source, sensed by a second temperature sensor. When determining that at least one of the first and second measuring values is the abnormal value, the controller is configured to control the output of the power converter to another value that is different from a value of the output set based on the first and second measuring values.
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公开(公告)号：US20180063909A1
公开(公告)日：2018-03-01
申请号：US15681053
申请日：2017-08-18
Inventor： Akihiro KISHIMOTO , Toshiaki NAKAMURA , Kenichi FUKUDA , Kazuya KATO
CPC classification number: H05B33/0815 , B60Q1/0094 , B60Q1/04 , B60Q1/1415 , B60Q1/1423 , H02M3/33507 , H02M3/33523 , H05B33/0845 , H05B33/0851
Abstract: A power supply device includes converters, a command circuit, and a setter. The converters correspond to loads. The command circuit controls the converters. The setter sets a magnitude of an output of at least one target converter of the converters in accordance with an output characteristic representing a relationship between an input voltage of the at least one target converter and an output limit value which is an upper limit value of the output from the at least one target converter. The output characteristic is a characteristic that the output limit value decreases as the input voltage lowers when the input voltage is lower than a threshold. The setter varies the threshold of the output characteristic in accordance with an operation status of the converters and sets the magnitude of the output from the at least one target converter in accordance with the output characteristic whose threshold has been varied.
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