-
公开(公告)号：US10278258B2
公开(公告)日：2019-04-30
申请号：US15981553
申请日：2018-05-16
Inventor： Shigeru Ido , Keisuke Seki , Kazuhiko Hayashi
Abstract: A lighting device is a device that is for supplying current to an LED unit, is connected to a constant current source having output terminals to which a capacitor is connected, and includes: a transistor connected in parallel with the capacitor and connected in series with the LED unit; a modulation circuit (a microcomputer of a modulator, etc.) that causes the transistor to switch ON and OFF based on a signal for visible light communication; and a constant current control circuit that maintains a current flowing through the transistor at a constant current when the current flowing through the transistor is greater than a first predetermined value.
-
公开(公告)号：US09974127B2
公开(公告)日：2018-05-15
申请号：US15426127
申请日：2017-02-07
Inventor： Shigeru Ido
CPC classification number: H05B33/0815 , H02M7/06 , H05B33/083 , H05B33/0887
Abstract: A lighting device includes a rectifier circuit, a drive circuit and a current control circuit. Rectifier circuit rectifies an AC voltage into a pulsating voltage to be output. A load circuit including two or more solid light sources connected in series is connected between output terminals of rectifier circuit. The drive circuit changes a number of solid light sources emitting light, according to a change in a voltage value of the pulsating voltage, so that a period of the pulsating voltage includes: a first time period during which a part of the two or more solid light sources emits light; and a second time period during which all of the two or more solid light sources emit light. The current control circuit controls, in at least the second time period, a value of current flowing through load circuit according to an average voltage of the pulsating voltage.
-
公开(公告)号：US09265120B2
公开(公告)日：2016-02-16
申请号：US14428712
申请日：2013-10-24
Inventor： Shigeru Ido
IPC: H05B33/08
CPC classification number: H05B33/0887 , H05B33/0815 , H05B33/089 , H05B33/0896 , Y02B20/341 , Y02B20/346
Abstract: A lighting device includes a step-down circuit configured to convert an input voltage into a DC voltage by no insulation, and a control circuit configured to control the step-down circuit. The step-down circuit has an input end, and the step-down circuit is provided on a side of the input end with an overcurrent protector. The overcurrent protector is configured to be fused by flowing of an overcurrent. The step-down circuit has an output end, a side of which is connected in parallel with a switching circuit. The switching circuit includes a switching element. The control circuit is configured to turn on the switching element according to an output voltage of the step-down circuit.
Abstract translation: 照明装置包括：降压电路，其被配置为通过无绝缘性将输入电压转换为直流电压;以及控制电路，被配置为控制降压电路。 降压电路具有输入端，并且降压电路在输入端的一侧设置有过电流保护器。 过电流保护器被配置为通过过电流的流动而熔断。 降压电路具有输出端，其一侧与开关电路并联连接。 开关电路包括开关元件。 控制电路被配置为根据降压电路的输出电压来接通开关元件。
-
公开(公告)号：US09232597B2
公开(公告)日：2016-01-05
申请号：US14619645
申请日：2015-02-11
Inventor： Daisuke Ueda , Hiroshi Kido , Akinori Hiramatu , Junichi Hasegawa , Shigeru Ido
CPC classification number: H05B33/0848 , H05B33/0815 , H05B33/089
Abstract: A lighting device includes: first and second power feed terminals between which a light source of a light source device is configured to be electrically connected; a power supply circuit having output ends electrically connected respectively to the first and second power feed terminals and configured to output a DC power across the first and second power feed terminals; a control circuit configured to control the power supply circuit; and at least one identifying terminal for identifying a rated current of a light source. The control circuit is configured to identify a rated current of a light source connected between the first and second power feed terminals by detecting whether the identifying terminal is in floating state or not, and to control the power supply circuit so as to supply a current corresponding to the identified rated current through the first and second power feed terminals.
Abstract translation: 照明装置包括：第一和第二馈电端子，其中光源装置的光源被配置为电连接; 电源电路，其输出端分别电连接到第一和第二馈电端子，并且被配置为在第一和第二馈电端子上输出DC电力; 控制电路，被配置为控制所述电源电路; 以及用于识别光源的额定电流的至少一个识别终端。 该控制电路被配置为通过检测识别终端是否处于浮置状态来识别连接在第一和第二馈电端子之间的光源的额定电流，并且控制电源电路以便提供对应的电流 通过第一和第二馈电端子到所识别的额定电流。
-
公开(公告)号：US10439719B2
公开(公告)日：2019-10-08
申请号：US15984368
申请日：2018-05-20
Inventor： Keisuke Seki , Shigeru Ido , Kazuhiko Hayashi
IPC: H04B10/116 , H05B33/08 , H05B37/02 , H02M3/335 , H02M1/42 , H02M3/156 , H02M1/14 , H04B10/50 , H02M1/00
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.
-
Patent Agency Ranking
公开(公告)号：US10021755B1
公开(公告)日：2018-07-10
申请号：US15848015
申请日：2017-12-20
Inventor： Shigeru Ido
Abstract: A first control circuit is configured to detect a value of a load current flowing through a solid-state light source in a lighting time period, and control a control element at a first response speed so as to make the value of the load current agree with a first target value. A second control circuit is configured to detect the value of the load current in the lighting time period, and control the control element at a second response speed so that the value of the load current does not exceed an upper limit that is larger than a first target value. The second response speed is higher than the first response speed.
-
公开(公告)号：US09615424B2
公开(公告)日：2017-04-04
申请号：US14615739
申请日：2015-02-06
Inventor： Shigeru Ido , Hiroshi Kido , Akinori Hiramatu , Junichi Hasegawa , Daisuke Ueda
IPC: H05B33/08
CPC classification number: H05B33/089 , H05B33/0815 , H05B33/0824 , H05B33/0827 , H05B33/0845 , Y02B20/346
Abstract: A control unit of a light source device after activation time is configured to turn on switches respectively connected in series with light sources, in prescribed order. The light source device and a lighting device are configured to transmit characteristics of the light sources, based on a voltage change depending on a pattern of on and off of the switches.
-
公开(公告)号：US09485820B2
公开(公告)日：2016-11-01
申请号：US14639234
申请日：2015-03-05
Inventor： Shigeru Ido , Hiroshi Kido , Akinori Hiramatu , Junichi Hasegawa , Daisuke Ueda
CPC classification number: H05B33/0815
Abstract: A lighting device includes a power conversion unit, an impedance adjustment unit, a first control unit, and a second control unit. The power conversion unit is configured to convert input power to direct-current power used for a light source. The impedance adjustment unit is formed of a series circuit of a resistor element and a switch element and is coupled to the light source in parallel, relative to the power conversion unit. The second control unit is configured to cause the power conversion unit to operate, for each burst cycle, for an operation period which is not longer than the burst cycle, and increase and reduce the ratio of the operation period to the burst cycle. The first control unit is configured to make the switch element conductive for a predetermined adjustment period which is not longer than the operation period, during the operation period.
Abstract translation: 照明装置包括功率转换单元，阻抗调节单元，第一控制单元和第二控制单元。 电力转换单元被配置为将输入功率转换为用于光源的直流电力。 阻抗调整单元由电阻元件和开关元件的串联电路形成，并且相对于功率转换单元并联耦合到光源。 第二控制单元被配置为使得功率转换单元在每个突发周期中操作不长于突发周期的操作周期，并且增加和减少操作周期与突发周期的比率。 第一控制单元被配置为在操作周期期间使开关元件导通预定调节周期，其不长于操作周期。
-
公开(公告)号：US09374864B2
公开(公告)日：2016-06-21
申请号：US14734566
申请日：2015-06-09
Inventor： Takeshi Kamoi , Akinori Hiramatu , Hiroshi Kido , Katsushi Seki , Shigeru Ido , Daisuke Yamahara , Daisuke Ueda
CPC classification number: H05B33/083
Abstract: A controller circuit is configured to adjust the number of light-emitting diodes that a current flows from a rectifier circuit through so that: the number of light-emitting diodes, which are lit, of the plurality of light-emitting diodes increases according to a value of a pulsating voltage during a time period that the value of the pulsating voltage increases; and the number of light-emitting diodes, which are lit, of the plurality of light-emitting diodes decreases according to the value of the pulsating voltage during a time period that the value of the pulsating voltage decreases. Light-emitting diodes, which start to emit light by a higher voltage value, of the plurality of light-emitting diodes are disposed at a position nearer to an outside of a mounting region of a substrate than light-emitting diodes, which start to emit light by a lower voltage value, of the plurality of light-emitting diodes.
Abstract translation: 控制器电路被配置为调节电流从整流电路流过的发光二极管的数量，使得：多个发光二极管的发光二极管的数量根据 在脉动电压值增加的时间段内脉动电压的值; 并且多个发光二极管中发光二极管的数量根据脉动电压值减小的时间段内的脉动电压的值而减小。 多个发光二极管开始发射较高电压值的发光二极管被设置在比开始发射的发光二极管更靠近基板的安装区域的外侧的位置 在多个发光二极管中通过较低的电压值进行光照射。
-
公开(公告)号：US10237937B2
公开(公告)日：2019-03-19
申请号：US15898458
申请日：2018-02-17
Inventor： Hiroshi Kido , Shigeru Ido , Hisao Kataoka , Naohiro Toda
Abstract: A lighting device is provided that includes a lighting controller that controls a light emitter that emits illumination light. The lighting controller includes a first filter that converts a first signal waveform that is defined by a first piecewise linear curve and whose intensity repeatedly increases and decreases into a signal waveform having a smooth rounded curve, and outputs the converted signal waveform as a first output waveform. The lighting controller causes the light emitter to repeatedly increase and decrease the intensity of the illumination light in accordance with the first output waveform.
-
-
-
-
-
-
-
-
-
Search Results
24
records
(took 0.025 seconds)
