公开(公告)号：US20180288846A1

公开(公告)日：2018-10-04

申请号：US15935039

申请日：2018-03-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takahiro OHORI ,  Takahiro FUKUI ,  Masanobu MURAKAMI

IPC: H05B33/08 ,  B60Q1/14 ,  H02P7/18

CPC classification number: H05B33/0845 ,  B60Q1/0017 ,  B60Q1/1407 ,  B60Q1/1415 ,  H02P7/18 ,  H05B33/0809 ,  H05B33/0842

Abstract: In a power supply, a first output terminal and a second output terminal are electrically connected to each other, and a first common terminal and a second common terminal are electrically connected to each other. When a value of a consumption current of a motor is equal to or smaller than a value of a maximum output current of a second constant voltage circuit, the second constant voltage circuit keeps a second voltage at a steady voltage value. When the value of the consumption current of the motor is larger than the value of the maximum output current, the second constant voltage circuit control the second voltage to have a value smaller than a value of the first voltage, and a first constant voltage circuit supplies a differential current which corresponds to a difference between the consumption current of the motor and the maximum output current of the second constant voltage circuit.

公开(公告)号：US20160262232A1

公开(公告)日：2016-09-08

申请号：US15042610

申请日：2016-02-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takahiro FUKUI ,  Toshifumi TANAKA ,  Kazutoshi SUGANUMA

IPC: H05B33/08 ,  B60Q1/04

CPC classification number: H05B33/0842 ,  B60Q1/04 ,  B60Q11/00 ,  H05B33/0815 ,  H05B33/0824

Abstract: A lighting device includes first to third output terminals, a power converter, a bypass switch, and a controller. A first light source is connected between the first and third output terminals. A second light source is connected between the second and third output terminals. The bypass switch is connected between the second and third output terminals. The controller switches the bypass switch between ON-state and OFF-state. The controller controls the power converter to adjust an output current. The controller includes a voltage meter for measuring a voltage corresponding to an output voltage of the power converter. The controller compares a measured voltage of the voltage meter with a first threshold voltage while keeping the bypass switch in OFF-state. The controller compares the measured voltage with a second threshold voltage while keeping the bypass switch in ON-state. The second threshold voltage is smaller than the first threshold voltage.

Abstract translation: 照明装置包括第一至第三输出端子，功率转换器，旁路开关和控制器。 第一光源连接在第一和第三输出端之间。 第二光源连接在第二和第三输出端之间。 旁路开关连接在第二和第三输出端子之间。 控制器将旁路开关切换到ON状态和OFF状态。 控制器控制电源转换器调节输出电流。 控制器包括用于测量与功率转换器的输出电压相对应的电压的电压计。 控制器将电压表的测量电压与第一阈值电压进行比较，同时将旁路开关置于OFF状态。 控制器将测量的电压与第二阈值电压进行比较，同时保持旁路开关处于导通状态。 第二阈值电压小于第一阈值电压。

公开(公告)号：US20180283643A1

公开(公告)日：2018-10-04

申请号：US15927762

申请日：2018-03-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takahiro FUKUI ,  Masanobu MURAKAMI ,  Takahiro OHORI

IPC: F21S45/10 ,  F21V23/02 ,  F21S45/43

CPC classification number: F21S45/10 ,  F21S41/141 ,  F21S45/43 ,  F21V23/02 ,  F21Y2115/10

Abstract: A lighting device includes an output adjustment circuit, a smoothing circuit and a control circuit. The smoothing circuit receives a binary rotation detection signal according to the rotation of a fan and smooths the rotation detection signal to produce a smoothed signal. The control circuit detects a rotation malfunction of the fan when the smoothed signal is greater than or equal to an upper limit threshold over first predetermined time or when the smoothed signal is smaller than or equal to a lower limit threshold over second predetermined time.

公开(公告)号：US20150353001A1

公开(公告)日：2015-12-10

申请号：US14707359

申请日：2015-05-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takahiro FUKUI

IPC: B60Q1/04 ,  H02M3/335

CPC classification number: B60Q1/04 ,  H02M3/33507 ,  H02M2001/0022 ,  H05B33/0809 ,  H05B33/0815 ,  H05B33/0845 ,  Y02B20/346

Abstract: A control circuit is configured to compare an input voltage measured through an input voltage detection circuit with a first threshold which is lower than a rated voltage of an external DC power supply and with a second threshold which is lower than the first threshold. The control circuit is configured, when detecting that a duration time in which the input voltage is kept lower than the first threshold reaches a predetermined holding period, to stop operating a switching device. The control circuit is configured, after detecting that the input voltage is lower than the second threshold, to more shorten a maximum ON time than that during a normal operation or lengthen an OFF time of the switching device than a maximum OFF time during the normal operation.

Abstract translation: 控制电路被配置为将通过输入电压检测电路测量的输入电压与低于外部DC电源的额定电压的第一阈值和低于第一阈值的第二阈值进行比较。 控制电路被配置为当检测到输入电压保持低于第一阈值的持续时间达到预定的保持期间时，停止操作开关装置。 控制电路在检测到输入电压低于第二阈值之后被配置为比正常操作期间的最大接通时间更短，而在正常操作期间比在正常操作期间的最大关闭时间延长开关装置的断开时间 。

公开(公告)号：US20170008447A1

公开(公告)日：2017-01-12

申请号：US15204538

申请日：2016-07-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takahiro FUKUI ,  Masaaki TAKAMATSU ,  Kazuya KATO

IPC: B60Q1/14 ,  F21S8/10 ,  H05B33/08

CPC classification number: B60Q1/1407 ,  B60Q1/0094 ,  B60Q1/1446 ,  F21S41/143 ,  F21S41/147 ,  F21S41/255 ,  F21S41/321 ,  F21S41/60 ,  F21S41/663 ,  F21Y2115/10 ,  H05B33/0815 ,  H05B33/083 ,  H05B33/0845

Abstract: The lighting device includes a control circuit performing dimming control of dimming a light source device according to a desired dimming level. In the dimming control, the control circuit sets a desired current value of amplitude control to a value corresponding to the desired dimming level, and set a desired duty cycle of pulse width modulation control to a predetermined value associated with a dimming subrange containing the desired dimming level, of multiple different dimming subranges of a total dimming range of the light source device. The predetermined value is a duty cycle allowing luminance of the light source device to be equal to upper limit luminance of the associated dimming subrange under a condition where the current value of the current of the light source device is a maximum value.

Abstract translation: 照明装置包括控制电路，根据期望的调光水平进行调光光源装置的调光控制。 在调光控制中，控制电路将期望的幅度控制电流值设置为与期望的调光电平相对应的值，并将期望的脉宽调制控制占空比设置为与包含所需调光的调光子范围相关联的预定值 水平，光源装置的总调光范围的多个不同的调光子范围。 预定值是在光源装置的电流的当前值为最大值的条件下允许光源装置的亮度等于相关联的调光子范围的上限亮度的占空比。

公开(公告)号：US20180283637A1

公开(公告)日：2018-10-04

申请号：US15936779

申请日：2018-03-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masanobu MURAKAMI ,  Takahiro FUKUI ,  Takahiro OHORI

IPC: F21S41/19 ,  F21S41/141 ,  H05B33/08

Abstract: The lighting device lights an illumination load in which a first light source block and a second light source block are coupled in series. The lighting device includes a switch unit coupled in parallel with the second light source block. The switch unit includes a series circuit of a switching element and a resistor. The lighting device keeps the switching element off to set a state of the illumination load to a first state. The lighting device keeps the switching element on to set the state of the illumination load to a second state. The resistor has its resistance allowing a value of a voltage across the switch unit to be smaller than a value of a voltage across the second light source block which causes the second light source block to light while the switching element is on.