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    Tubular LED lamp and a circuit used for the lamp
    1.
    发明授权
    Tubular LED lamp and a circuit used for the lamp 有权

    公开(公告)号：US12063727B2

    公开(公告)日：2024-08-13

    申请号：US17928111

    申请日：2021-06-15

    Applicant: SIGNIFY HOLDING B.V.

    Inventor： Deyong Kong ,  Xin Liu ,  Feng Ju ,  Liwei Sun ,  Han Lu ,  Jing Yang ,  Yuanqiang Liu

    IPC: H05B45/50 ,  H05B45/10

    CPC classification number: H05B45/50 ,  H05B45/10

    Abstract: A tubular LED lamp to be used with an external electronic power controlling device which is adapted to provide an input voltage to the lamp, comprising: a LED unit; a driving circuit for the LED unit; and a safety detection circuit adapted to detect whether the tubular LED lamp is correctly connected to an external lamp fixture; characterized in that further comprising: a holding current providing circuit adapted to provide a holding current through the electronic controlling device so as to maintain the electronic controlling device to be conductive; and a controlling circuit adapted to synchronize the safety detection circuit with the holding current providing circuit such that the safety detection circuit is adapted to carry out the detection when the hold current providing circuit is adapted to provide the holding current and the electronic controlling device is conductive; wherein the controlling circuit is adapted to deactivate the holding current providing circuit and the safety detection circuit after the detection in one cycle of the input voltage, and re-activate and deactivate them in a later cycle.

    Tubular device for fitting to a tubular light fitting
    3.
    发明授权
    Tubular device for fitting to a tubular light fitting 有权

    公开(公告)号：US11137119B2

    公开(公告)日：2021-10-05

    申请号：US16096231

    申请日：2017-05-08

    Applicant: SIGNIFY HOLDING B.V.

    Inventor： Haimin Tao ,  Tian Xiang Wen ,  Feng Ju ,  Frits Tobi De Jongh ,  Han Lu ,  Pieter Johannes Stobbelaar

    IPC: F21V25/04 ,  H05B45/37 ,  F21V23/00 ,  F21Y115/10 ,  F21K9/278 ,  H05B45/382 ,  F21V23/06 ,  F21Y103/10

    Abstract: A tubular solid state lighting device has a pin safety circuit electrically connected to connection pins of the one end. The pin safety circuit comprises two protection components, of different types. In one set of examples, there is an electrically controlled isolation switch and an electronic switch which functions as a high voltage isolation barrier. The switch provides full galvanic contact separation, whereas the isolation barrier provides current protection if the isolation switch is not functional. In another set of examples, there is a mechanically controlled isolation switch and an electrical or electronic isolation barrier. This provides two levels of protection, but requiring only a single manual operation by the installer of the lighting device. It avoids end-of-life protection circuitry being triggered during the installation of the lighting device.

    Retrofit LED lamp
    4.
    发明授权
    Retrofit LED lamp 有权

    公开(公告)号：US10667344B2

    公开(公告)日：2020-05-26

    申请号：US16393097

    申请日：2019-04-24

    Applicant: SIGNIFY HOLDING B.V.

    Inventor： Xiujuan Wu ,  Han Lu ,  Jing Xu Zhou ,  Jason J. Yang ,  Jessie Wang ,  Tian Ella

    IPC: H05B33/08 ,  F21K9/27 ,  F21V23/02 ,  F21Y103/10 ,  F21Y115/10

    Abstract: A retrofit lamp is for use with a fluorescence lighting ballast. The retrofit lamp comprises a filament emulation circuit. A detection circuit detects (at least) if a connected ballast is an instant start electronic ballast or an electromagnetic ballast by detecting a potentially existing heating voltage across the filament emulation circuit. In response, an LED arrangement may be connected in a series configuration (for an instant start electronic ballast) or in a parallel configuration (for an electromagnetic ballast). In this way, the output power is managed to ensure efficient operation. A different pin safety function may also be provided in the different configurations.

    Detection circuit and LED tube including the same
    6.
    发明授权
    Detection circuit and LED tube including the same 有权

    公开(公告)号：US10334688B2

    公开(公告)日：2019-06-25

    申请号：US15683501

    申请日：2017-08-22

    Applicant: SIGNIFY HOLDING B.V.

    Inventor： Han Lu ,  Jingxu Zhou ,  DeYong Kong

    IPC: H05B33/08 ,  F21Y115/10 ,  F21Y103/10

    Abstract: Embodiments of the present disclosure involve a detection circuit for a tube and a tube including the detection circuit. The detection circuit comprises: impedance connected between two ends of a tube; a voltage detector configured to detect voltage on the impedance; a voltage threshold circuit configured to provide a voltage threshold; a first control circuit configured to compare voltage across the two ends of the tube to the voltage threshold, and to control the voltage detector to detect only when the voltage across the two ends of the tube is smaller than the voltage threshold. By using the detection circuit of the present disclosure, it can detect whether a human body contacts the tube under protection state, to avoid of the risk of getting an electrical shock.

    Retrofit LED lamp
    7.
    发明授权
    Retrofit LED lamp 有权

    公开(公告)号：US10314134B1

    公开(公告)日：2019-06-04

    申请号：US16135514

    申请日：2018-09-19

    Applicant: SIGNIFY HOLDING B.V.

    Inventor： Xiujuan Wu ,  Han Lu ,  Jing Xu Zhou ,  Jason J Yang ,  Jessie Wang ,  Tian Ella

    IPC: H05B33/08 ,  F21K9/27 ,  F21V23/02 ,  F21Y103/10 ,  F21Y115/10

    Abstract: A retrofit lamp is for use with a fluorescence lighting ballast. The retrofit lamp comprises a filament emulation circuit. A detection circuit detects (at least) if a connected ballast is an instant start electronic ballast or an electromagnetic ballast by detecting a potentially existing heating voltage across the filament emulation circuit. In response, an LED arrangement may be connected in a series configuration (for an instant start electronic ballast) or in a parallel configuration (for an electromagnetic ballast). In this way, the output power is managed to ensure efficient operation. A different pin safety function may also be provided in the different configurations.

    Circuit board arrangement to prevent overvoltage and arcing
    9.
    发明授权
    Circuit board arrangement to prevent overvoltage and arcing 有权

    公开(公告)号：US11353166B2

    公开(公告)日：2022-06-07

    申请号：US17254949

    申请日：2019-06-18

    Applicant: SIGNIFY HOLDING B.V.

    Inventor： Zhaoting Li ,  Peng Chen ,  Han Lu ,  Feng Wang ,  Wei Xia ,  Yun Wang ,  Ai Ling Xu

    IPC: H05B45/34 ,  H05B45/54 ,  F21K9/278 ,  H05B45/40

    Abstract: A circuit board arrangement assembled by at least a first and a second circuit boards, each circuit board comprising: a portion of a circuit; and a first and a second electrical terminals to be electrically connected to a respective first and a second electrical terminals of the other circuit board of the first and the second circuit boards, so as to couple the portions of the circuit of the first and the second circuit boards, wherein the first and second electrical terminals on the circuit board are coupled with each other via the portion of the circuit on the other circuit board of the first and the second circuit boards, at least one board further comprising: a voltage suppression element (TSS1, TSS2) in the board connected across the first and second electrical terminals of the board, said voltage suppression element (TSS1, TSS2) is adapted to become conductive when a voltage thereacross reaches a threshold; characterized in that the portion of the circuit comprising at least one LED, and said LED (LED1) of the first circuit board (B1) and said LED (LED4) of the second circuit board (B2) are forwarded in the same direction and to be series connected between a first interconnection (LED+) of the first electrical terminals of the first and the second circuit boards and a second interconnection (LED−) of the second electrical terminal of the first and the second circuit boards. The voltage suppression element is able to prevent overvoltage/arcing due to a disconnection of the series connection of the LEDs of the first and second circuit boards, as well as a disconnection of a interconnection of first terminals, and a interconnection of the second terminals.

    Emergency inverter and emergency lighting system
    10.
    发明授权
    Emergency inverter and emergency lighting system 有权

    公开(公告)号：US10432021B2

    公开(公告)日：2019-10-01

    申请号：US15220704

    申请日：2016-07-27

    Applicant: SIGNIFY HOLDING B.V.

    Inventor： Xi Quan Shen ,  James Nourse ,  Han Lu ,  Jerzy Janczak

    IPC: H02J9/06 ,  H05B37/02

    Abstract: Embodiments of the present disclosure relate to an emergency inverter and an emergency lighting system. The emergency inverter comprises a power detecting module and a dimming signal generating module. The power detecting module is configured to detect an output power of the emergency inverter in an emergency state. The dimming signal generating module is coupled to the power detection module and configured to generate a dimming signal based on the output power of the emergency inverter in the emergency state.

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