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    LIGHTING DEVICE, ILLUMINATION DEVICE, AND ELECTRONIC DEVICE
    4.
    发明公开
    LIGHTING DEVICE, ILLUMINATION DEVICE, AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：EP3370482A1

    公开(公告)日：2018-09-05

    申请号：EP18157307.2

    申请日：2018-02-19

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Kido, Hiroshi ,  Ido, Shigeru ,  Kataoka, Hisao

    IPC: H05B33/08

    CPC classification number: H05B33/0857 ,  H05B33/0827 ,  H05B33/0845 ,  H05B33/0866 ,  H05B37/0209

    Abstract: A lighting device (10) which causes a first light source (31) to emit illumination light and a second light source (32) to emit illumination light having a color temperature higher than the illumination light emitted by the first light source (31) includes: an illuminator (30) which includes a first switching element (Q1) connected in series to the first light source (31), and a second switching element (Q2) connected in series to the second light source (32); an illumination controller (20) which controls the illuminator (30) to place at least one of the first switching element (Q1) and the second switching element (Q2) into an off state; and a constant-current controller (50) which detects a sum of values of currents flowing through the first light source (31) and the second light source (32), and controls the first switching element (Q1) and the second switching element (Q2) based on the sum.

    DETERMINING PROPERTY OF UNCHANGED LOAD DEVICE
    5.
    发明公开
    DETERMINING PROPERTY OF UNCHANGED LOAD DEVICE 审中-公开

    公开(公告)号：EP3348119A1

    公开(公告)日：2018-07-18

    申请号：EP16756657.9

    申请日：2016-08-16

    Applicant: Philips Lighting Holding B.V.

    Inventor： HAGELAAR, Joris, Hubertus, Antonius ,  VAN DER HAM, Marcel ,  VROEGOP, Aart, Jan

    IPC: H05B33/08

    CPC classification number: H05B33/0851 ,  H05B33/0815 ,  H05B33/0827 ,  H05B33/0866 ,  H05B33/0893

    Abstract: Determination devices (1) determine properties of load devices (2) that may remain unchanged for said determining and that comprise first channels with first elements (20, 25). The determination devices comprise first switches (10) for providing first invitation signals to the first channels, detectors (15, 16) for detecting first response signals that result from the first invitation signals, and controllers (17) for deriving the properties of the load devices (2) from detections of the first response signals. The properties define first maximum values of first loads of the first channels, and the controllers (17) calculate first maximum duty cycles of first supply signals for supplying the first channels in view of the first maximum values of the first loads and power capacities of power supplies (3) that produce the first supply signals. The load devices (2) may further comprise second channels with second elements (21, 26), and the determination devices (1) may further comprise second switches (11).

    LED DRIVING CIRCUIT
    6.
    发明公开
    LED DRIVING CIRCUIT 有权

    公开(公告)号：EP3193565A4

    公开(公告)日：2018-06-06

    申请号：EP15840624

    申请日：2015-09-11

    Applicant: CITIZEN ELECTRONICS ,  CITIZEN WATCH CO LTD

    Inventor： AKIYAMA TAKASHI ,  YAMADA TATSURO ,  GOTO SATOSHI

    IPC: H05B33/08

    CPC classification number: H05B33/0812 ,  H05B33/0824 ,  H05B33/0827 ,  H05B33/0845 ,  H05B33/0857 ,  H05B33/0866 ,  H05B37/02

    Abstract: The purpose of the present invention is to provide an LED driving circuit with which it is possible to easily manage the color temperature by adjusting light. An LED driving circuit, characterized in having: a first LED group in which a plurality of first LEDs are serially connected, the first LED group contributing to emission of light having a first color temperature; a second LED group in which a plurality of second LEDs are serially connected, the second LED group contributing to emission of light having a second color temperature; a third LED group in which a plurality of second LEDs are serially connected, the second LED group contributing to emission of light having the second color temperature; and a control unit for switching, in response to an increase in a rectified output voltage, from illumination of only the first LED group to illumination of only the second LED group and then from illumination of only the second LED group to illumination of the second LED group and the third LED group, the number of first LEDs included in the first LED group being less than the number of second LEDs included in the second LED group.

    LIGHTING SYSTEM AND RELATED METHOD OF OPERATING A LIGHTING SYSTEM
    8.
    发明公开
    LIGHTING SYSTEM AND RELATED METHOD OF OPERATING A LIGHTING SYSTEM 审中-公开
    照明系统及操作照明系统的相关方法

    公开(公告)号：EP3280228A1

    公开(公告)日：2018-02-07

    申请号：EP17182080.6

    申请日：2017-07-19

    Applicant: OSRAM GmbH ,  OSRAM S.P.A. - SOCIETA' RIUNITE OSRAM EDISON CLERICI

    Inventor： RANIERO, Enrico ,  ANGELIN, Francesco

    IPC: H05B33/08

    CPC classification number: H05B33/0827 ,  H05B33/0842 ,  H05B33/0848 ,  H05B33/0866 ,  H05B33/089

    Abstract: There is described a lighting system. The lighting system comprises a voltage source (12) configured to generate a constant direct current adapted to supply a plurality of lighting modules (20a..20n). Moreover, the system comprises a number n of electronic switches (SWa..SWn), wherein each electronic switch (SWa..SWn) is configured to selectively connect a respective lighting module (20a..20n) to the voltage source (12) as a function of respective drive signals ( PWMa..PWMn ) generated by a control unit (102). A current sensor (104) is connected in series with the voltage source (12), in order to detect a measurement signal (CS) indicative of the current provided by the voltage source (12).
    Specifically, the control unit (102) varies the drive signals ( PWMa..PWMn ) , such that:
    - in a first instant, all lighting modules (20a..20n) are connected to the voltage source (12); and
    - during a sequence of (n - 1) instants, each time a different set of lighting modules (20a..20n) is connected to the voltage source (12).
    The control unit (102) then determines the current flowing through all lighting modules (20a..20n) as a function of the measurement signal (CS) detected in the first instant, and determines the currents which flow through the various lighting modules (20a..20n) as a function of the measurement signals (CS) detected during the sequence of instants.

    Abstract translation: 描述了照明系统。 照明系统包括电压源（12），该电压源（12）被配置为产生适于供应多个照明模块（20a..20n）的恒定直流电。 此外，该系统包括n个电子开关（SWa ... SWn），其中每个电子开关（SWa ... SWn）被配置为选择性地将相应的照明模块（20a..20n）连接到电压源（12） 作为由控制单元（102）产生的各个驱动信号（PWMa..PWMn）的函数。 电流传感器（104）与电压源（12）串联连接，以便检测指示由电压源（12）提供的电流的测量信号（CS）。 具体而言，控制单元（102）改变驱动信号（PWMa..PWMn），使得： - 在第一时刻，所有照明模块（20a..20n）连接到电压源（12）; 和 - 在（n-1）个时刻的序列期间，每次将不同组的照明模块（20a..20n）连接到电压源（12）时。 然后，控制单元（102）根据在第一时刻检测到的测量信号（CS）来确定流过所有照明模块（20a..20n）的电流，并且确定流过各种照明模块（20a ... 20n）作为在瞬时序列期间检测到的测量信号（CS）的函数。

    METHOD AND APPARATUS FOR PROVIDING FEEDBACK IN AN ISOLATED OPERATING DEVICE FOR LIGHTING
    9.
    发明公开
    METHOD AND APPARATUS FOR PROVIDING FEEDBACK IN AN ISOLATED OPERATING DEVICE FOR LIGHTING 审中-公开
    在用于照明的隔离式操作装置中提供反馈的方法和设备

    公开(公告)号：EP3244696A1

    公开(公告)日：2017-11-15

    申请号：EP16169281.9

    申请日：2016-05-12

    Applicant: Helvar Oy Ab

    Inventor： Hakkarainen, Petri

    IPC: H05B33/08

    CPC classification number: H05B33/0851 ,  H05B33/0866

    Abstract: An operating device for lighting comprises a primary side circuit (201) configured to receive electric power and a secondary side circuit (203) galvanically isolated from the primary side circuit (201) and configured to produce an output voltage and an output current. A transformer (202) between said primary (201) and secondary (203) side circuits transfers electric power from the former to the latter. A first detector (204) and a second detector (205, 209) probe first and second quantities in isolation from said primary side circuit (201) and produce electric indications of detected values of said first and second quantities. A controllable oscillator circuit (206) produces a common oscillating signal with at least two variable characteristics, where-in values of said at least two variable characteristics are controlled by said electric indications of the detected values of said first and second quantities. A galvanically isolated feedback coupling (207) conveys said common oscillating signal from said secondary side circuit to said primary side circuit.

    Abstract translation: 用于照明的操作设备包括被配置为接收电力的初级侧电路（201）以及与初级侧电路（201）电流隔离并且被配置为产生输出电压和输出电流的次级侧电路（203）。 所述初级（201）和次级（203）侧电路之间的变压器（202）将来自前者的电力传输到后者。 第一检测器（204）和第二检测器（205,209）探测与所述初级侧电路（201）隔离的第一和第二量，并产生所述第一和第二量的检测值的电指示。 可控振荡器电路（206）产生具有至少两个可变特性的公共振荡信号，其中所述至少两个可变特性的值通过所述第一和第二量的检测值的所述电指示来控制。 电流隔离的反馈耦合（207）将来自所述次级侧电路的所述公共振荡信号传送到所述初级侧电路。

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