Combined With Parallel Connected Load Device Patents (Class 315/192)
  • Patent number: 10757776
    Abstract: An input device includes a universal serial bus interface, a white light-emitting diode unit, a red light-emitting diode unit, a green light-emitting diode unit, a blue light-emitting diode unit and a driving part. The driving part receives electricity through the universal serial bus and drives at least one of the white light-emitting diode unit, the red light-emitting diode unit, the green light-emitting diode unit and the blue light-emitting diode unit to emit a light beam. Consequently, the light beam with a higher luminous intensity and a specified color is outputted from the input device.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: August 25, 2020
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Ding-Hsiang Pan, Hui-Ling Lin, Chuan-Tai Hsiao, Chun-Han Huang
  • Patent number: 10743384
    Abstract: Systems and methods for a current sharing driver for light emitting diodes are disclosed. One disclosed system includes: a first string of LEDs; a second string of LEDs connected in parallel with the first string; a first current control device connected in series with the first string of LEDs; a second current control device connected in series with the second string of LEDs; a first voltage measurement device coupled to the first string of LEDs and the second string of LEDs, the first voltage measurement circuit coupled to the first current control device and configured to control the first current control device; and a second voltage measurement device coupled to the first string of LEDs and the second string of LEDs, the second voltage measurement circuit coupled to the second current control device and configured to control the second current control device.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: August 11, 2020
    Assignee: Ideal Industries Lighting LLC
    Inventors: Yuequan Hu, Liqin Ni
  • Patent number: 10694595
    Abstract: The present invention provides a light emitting diode (LED) driving circuit with low harmonic distortion. The LED driving circuit comprises: a rectifying circuit, a linear constant current circuit, a current limiting circuit, and a current limiting ramp slope determining circuit. The rectifying circuit is utilized for rectifying an alternating current (AC) power source to provide a direct current (DC) voltage output. The linear constant current circuit is utilized for driving at least an LED. The current limiting circuit is connected in parallel between the rectifying circuit and the linear constant current circuit, and utilized for generating a current limiting effect and determining a current limiting height. The current limiting ramp slope determining circuit is connected in parallel between the rectifying circuit and the linear constant current circuit and connected in series with the current limiting circuit, and utilized for determining a current limiting ramp slope.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: June 23, 2020
    Assignee: EDISON OPTO (DONGGUAN) CO., LTD.
    Inventors: Yu-Chen Lin, Hung-Chan Wang, Jin-Ping Liu
  • Patent number: 10670244
    Abstract: The present invention relates to a light emitting device comprising a transparent substrate which light can pass through and at least one LED chip emitting light omni-directionally. Wherein the LED chip is disposed on one surface of the substrate and the light emitting angle of the LED chip is wider than 180°, and the light emitted by the LED chip will penetrate into the substrate and at least partially emerge from another surface of the substrate. According to the present invention, the light emitting device using LED chips can provide sufficient lighting intensity and uniform lighting performance.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: June 2, 2020
    Assignee: EPISTAR CORPORATION
    Inventors: Chi-Chih Pu, Chen-Hong Lee, Shih-Yu Yeh, Wei-Kang Cheng, Shyi-Ming Pan, Siang-Fu Hong, Chih-Shu Huang, Tzu-Hsiang Wang, Shih-Chieh Tang, Cheng-Kuang Yang
  • Patent number: 10661702
    Abstract: A device controls at least a first light source of a motor vehicle. The motor vehicle includes at least the first light source to provide a first light function and a second light source to provide a second light function. The device includes an electrical structure to detect activation of the second light source, and to deactivate the first light source after detection of activation of the second light source. Also, a method controls at least a first light source of the motor vehicle. The method includes electrically detecting activation of the second light source and electrically deactivating the first light source after detecting activation of the second light source.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: May 26, 2020
    Assignee: VALEO ILUMINACION
    Inventors: Juan-Jose Santaella, Miguel-Angel Pena, Maria Marin, Antonio Domingo Illan, Juan Lara-Cabeza
  • Patent number: 10638582
    Abstract: Disclosed is a light emitting device having a configuration that, when a magnitude of an input voltage is greater than a minimum light emitting voltage, all light emitting devices are turned on regardless of the magnitude of the voltage. As the magnitude of the voltage is smaller, the light emitting devices are connected in parallel. As the magnitude of the voltage is greater, the light emitting devices are serially connected.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: April 28, 2020
    Assignee: LUMENS CO., LTD.
    Inventors: Soogeun Yoo, Honggeol Choi, Hoyoung Lee
  • Patent number: 10624189
    Abstract: A controller provides power to (i) a first light-emitting device that emits a first white light of a first correlated color temperature (CCT) and (ii) a second light-emitting device that emits a second white light of a second CCT lower than the first CCT. The first and second white lights mix to yield a combined white light having a combined-light CCT with a combined-light brightness. The controller receives electrical supply power in the form of segments of power. The controller distributes the supply power to the first and second light-emitting devices according to a power-distribution scheme that differentiates between whether segment duration of the segments is in an upper range or a lower range such that: (i) throughout the upper range: as segment duration decreases, combined-light CCT decreases and combined-light brightness remains substantially constant, and (ii) throughout the lower range: as the segment duration decreases, combined-light brightness decreases.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: April 14, 2020
    Inventor: Tiejun Wang
  • Patent number: 10598315
    Abstract: A lighting device is provided, which includes a first lighting unit, a heat-dissipating unit heat-conductively connected to the first lighting unit; a second lighting unit, a second heat-dissipating unit heat-conductively connected to the second lighting unit; and a driver electrically connected with the first lighting unit and the second lighting unit. Furthermore, a method of assembling a lighting device is provided.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: March 24, 2020
    Assignee: LEDVANCE GMBH
    Inventors: Haitao Wen, Jun Liu, Ran Lin, HongWei Zhang
  • Patent number: 10588196
    Abstract: The invention relates to a lighting load abnormality detecting device, the device including a power supply module, which is configured to provide power supply for the detecting device and the lighting load connected with the detecting device; a detecting circuit is configured to detect the abnormal state of the lighting load; a control module is configured to judge whether the lighting load is abnormal or not according to the detecting circuit feedback detection information; the detecting circuit includes a parallel PWM detection circuit and a static detection circuit; the static detecting circuit is configured to independently detect anomalies when the abnormality detecting device has no pulse loading or to cooperate with the pulse width modulation detecting circuit to jointly detect anomalies when there is pulse loading.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: March 10, 2020
    Assignee: Self Electronics Co., Ltd.
    Inventor: Xuejun Zou
  • Patent number: 10560087
    Abstract: A passive leakage management circuit for a switch leakage current including a switch having operable in a first operating mode, wherein the switch output supplies an output current having a first predetermined voltage, and a second operating mode, wherein the switch output supplies a leakage current having a second voltage, a first current path, and a leakage current path.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: February 11, 2020
    Assignee: GE Aviation Systems Limited
    Inventors: Peter James Handy, Nicholas George Tembe
  • Patent number: 10531531
    Abstract: A system and method for controlling a light output from a LED-based lighting solution is provided that may receive phase-cut AC signals and/or external digital control signals. The invention is capable of receiving both a phase-cut AC signal and an external digital control signal simultaneously and providing a desired light output from a LED-based lighting solution. The system generally includes a power source electronically connected to one or more dimmers and an AC power output of the dimmer connected to a solid state lighting device such as an LED. The system is capable of receiving signals from a wired and/or wireless external digital control device to additionally control the desired light output from a LED-based lighting solution.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: January 7, 2020
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Xiaoyan Wang, Nan Shi
  • Patent number: 10440900
    Abstract: A grow light system is disclosed that can produce an adjustable combined emission spectrum, as is useful to growing plants of different types, or as is useful to adjusting the spectrum provided to a given plant as it grows. The grow light can include a sensor system to detect the height of plants it is illuminating, and can via a cable hoist adjust the height of the grow light to maintain an optimal distance between the plants and the grow light. The grow light system preferably includes a computer device with a graphical user interface useable to set a plant-to-grow light distance, and/or to select a combined emission spectrum for the grow light, which may occur by selecting a particular plant type, variety, or group. The system may include a library of optimal settings to configure the system to optimally grow each selected plant type, variety, or group.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: October 15, 2019
    Assignee: Calyx Cultivation Tech. Corp.
    Inventors: John Higgins, James Higgins
  • Patent number: 10412804
    Abstract: A thermal foldback control system electrically connected to a light emitting diode (LED) driver. The thermal foldback control system including a temperature sensitive circuit and a shunt regulator. The temperature sensitive circuit includes first and second resistances that vary in response to a temperature at a reference point. Wherein the temperature sensitive circuit outputs a reference voltage based on the first and second resistances. The shunt regulator is configured to control a driver output of the LED driver based on the reference voltage.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: September 10, 2019
    Assignee: Hubbell Incorporated
    Inventors: Michael W. Bandel, Ray M. Lazalier
  • Patent number: 10407113
    Abstract: An LED driver is provided. The LED driver comprises a plurality of driving units and a fold circuit. The driving units are coupled to an LED string including a plurality of LEDs for driving the LEDs. The fold circuit is coupled to the LED string and divides the LED string into a plurality of LED segments when an input voltage is lower than a threshold voltage. The LED segments are coupled to each other in parallel, and the input voltage is supplied to the LED segments.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: September 10, 2019
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Chen-Hua Chiu, Moon-Ho Choi, Gwan-Bon Koo
  • Patent number: 10383188
    Abstract: An outdoor luminaire comprises a housing adapted to be mounted on an outdoor structure, an input disposed in the housing that receives AC power, and at least one rectification element coupled to the input and which produces rectified AC electrical power comprising a plurality of cycles. At least one LED driver circuit is coupled to the at least one rectification element and a plurality of LEDs is coupled to the at least one LED driver circuit. The LEDs are turned on at different points during each of the plurality of cycles and together develop an output level of at least about 2000 lumens.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: August 13, 2019
    Assignee: IDEAL INDUSTRIES LIGHTING LLC
    Inventors: Andrew Dan Bendtsen, Kurt S. Wilcox, John Sobieski
  • Patent number: 10372401
    Abstract: Provided is a display module including: a cabinet; and a plurality of Light Emitting Diode (LED) panels arranged on the cabinet in an array, each LED panel of the plurality of LED panels having a plurality of LEDs, wherein the cabinet includes a plurality of level regulators configured to regulate level differences amongst the plurality of LED panels, and wherein the plurality of level regulators include first level regulators provided at respective corners of the plurality of LED panels.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: August 6, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Won Ryu, Nguyen huu lam Vuong
  • Patent number: 10368408
    Abstract: A light emitting device includes: a first white light source which includes N pieces of first white light emitting diodes and emits a first white light; and a second white light source which includes M pieces of second white light emitting diodes and a first resistance element electrically connected in series to the second white light emitting diodes and having a first resistance value, is electrically connected in parallel to the first white light source, and emits a second white light, the light emitting device emitting a mixed white light of the first white light and the second white light. The drive voltage of the first white light source is higher than a drive voltage of the second white light source, and a color temperature of the mixed white light is higher as a total luminous flux of the mixed white light is higher.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: July 30, 2019
    Assignee: Toshiba Materials Co., Ltd.
    Inventors: Hiroyasu Kondo, Masahiko Yamakawa, Yasuhiro Shirakawa, Ryoji Tsuda, Atsuji Nakagawa, Toshitaka Fujii, Tomohiko Inoue
  • Patent number: 10368409
    Abstract: A light emitting device includes: a first white light source which includes N pieces of first white light emitting diodes and emits a first white light; and a second white light source which includes M pieces of second white light emitting diodes and a first resistance element electrically connected in series to the second white light emitting diodes and having a first resistance value, is electrically connected in parallel to the first white light source, and emits a second white light, the light emitting device emitting a mixed white light of the first white light and the second white light. The drive voltage of the first white light source is higher than a drive voltage of the second white light source, and a color temperature of the mixed white light is higher as a total luminous flux of the mixed white light is higher.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 30, 2019
    Assignee: Toshiba Materials Co., Ltd.
    Inventors: Hiroyasu Kondo, Masahiko Yamakawa, Yasuhiro Shirakawa, Ryoji Tsuda, Atsuji Nakagawa, Toshitaka Fujii, Tomohiko Inoue
  • Patent number: 10349479
    Abstract: The purposes of the devices described herein are to provide an LED lighting device capable of efficiently and economically emitting light having a selectable color temperature or a warm-on-dim feature when driven with AC power and to provide LED lighting devices which have an improved power factor and a reduced total harmonic distortion when powered with AC power.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: July 9, 2019
    Assignee: Lynk Labs, Inc.
    Inventors: Michael Miskin, Robert L. Kottritsch
  • Patent number: 10327297
    Abstract: A control circuit for an LED driving circuit having a rectifier and a power transistor for driving an LED load, can include: a control signal regulation circuit configured to control a driving voltage of the power transistor to vary with a rectifier output voltage to control the variation of a current flowing through the power transistor to be consistent with that of the rectifier output voltage to decrease a power loss of the power transistor; and the control signal regulation circuit being configured to control the driving voltage of the power transistor to vary with the rectifier output voltage to control the variation of the current flowing through the power transistor to be opposite to that of the rectifier output voltage to improve a power factor of the LED driving circuit.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: June 18, 2019
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Jianxin Wang, Huiqiang Chen
  • Patent number: 10299324
    Abstract: Provided is a lighting apparatus. The lighting apparatus may include two or more lighting units each including a plurality of LED groups which sequentially emit light in response to changes of a rectified voltage. The two or more lighting units may include one or more LED groups having the same light emitting sequence but having different light emitting points of time. Thus, current harmonic can be reduced, and power efficiency can be improved.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: May 21, 2019
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Gyeong Sik Mun, Sang Young Lee, Ki Chul An, Yong Geun Kim
  • Patent number: 10299337
    Abstract: Certain aspects involve lighting systems relating to control of light fixture dimming. For instance, a lighting system may include a first light source that outputs a first light color and a second light source that outputs a second light color. The lighting system also includes a switching device that couples and decouples the second light source in parallel with the first light source. The switching device includes a first setting that couples the second light source in parallel with the first light source and enables a variable color dimming operation. The switching device also includes a second setting that decouples the second light source from the first light source and enables a static color dimming operation.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: May 21, 2019
    Assignee: ABL IP Holding LLC
    Inventors: Feng Chen, Towfiq M. Chowdhury
  • Patent number: 10278245
    Abstract: A light-emitting device includes a substrate and a plurality of light-emitting elements disposed above the substrate. In the plurality of light-emitting elements, a first light-emitting element and a second light-emitting element different in a rate of decrease in light output along with a temperature increase are included. The plurality of light-emitting elements include: a first serial element group including some light-emitting elements connected in series among the plurality of light-emitting elements; and a second serial element group connected in parallel with the first serial element group and including some light-emitting elements connected in series among the plurality of light-emitting elements. A ratio between a total number of first light-emitting elements and a total number of second light-emitting elements is different between the first serial element group and the second serial element group.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: April 30, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masumi Abe, Yasuharu Ueno, Koji Omura, Kenji Sugiura, Toshifumi Ogata, Atsuyoshi Ishimori, Toshiaki Kurachi
  • Patent number: 10271397
    Abstract: Disclosed is a control circuit of an LED lighting apparatus, capable of reducing total harmonic distortion (THD). The control circuit may include a THD reduction circuit configured to control a driving current on a current path corresponding to light emission of an LED group in response to a change of a rectified voltage.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: April 23, 2019
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Yong Geun Kim
  • Patent number: 10257899
    Abstract: An automatically reconfiguring light-emitting circuit includes a first and second block of electric lights, a switching mechanism, the switching mechanism having (i) a first state in which the switching mechanism electrically connects the first block of electric lights in parallel with the second block of electric lights and (ii) a second state in which the switching mechanism electrically connects the first block of electric lights in series with the second block of electric lights, a current regulator that generates a current control signal in response to a current in the first group of lights and second group of lights, and a controller electrically connected to the switching mechanism, the controller configured to switch the switching mechanism between the first state and the second state based on the current control signal.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: April 9, 2019
    Assignee: LiteIdeas, LLC
    Inventor: Paul D Rucker
  • Patent number: 10237935
    Abstract: An emission control device includes: a switching circuit for switching which light-emitting element or light-emitting elements from among a plurality of light-emitting elements is supplied with current; a detection circuit which detects current or voltage supplied from a DC-power supply circuit; and a control circuit which controls the switching circuit to switch which of the light-emitting element or light-emitting elements from among the plurality of light-emitting elements is supplied with the current when a power switch is turned from on to off and back to on within a predefined period and the current or the voltage detected by the detection circuit is less than when the power switch is on.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: March 19, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Keisuke Seki
  • Patent number: 10159131
    Abstract: An LED light fixture, in the form of lamps or luminaires, is comprised on a plurality of LED lights producing bright white or warm light and a plurality of color LED lights producing light of a visibly different color. The fixture includes control circuitry for receiving an input voltage signal from a dimmer switch wherein when the dimmer switch reduces the input voltage to the LED light fixture within a top range setting of the dimmer switch, the brightness of the light is maintained while the color Kelvin temperature of the light spectrum is reduced. If the dimmer switch is increased in the top range, the color temperature increases. This is achieved by increasing the frequency of a reduced input voltage signal during a reduction of the dimmer switch in the top range thereof to supply full driver current to the white or warm light LED's while reducing the driver current to the color LED's.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: December 18, 2018
    Inventor: Adam Chaimberg
  • Patent number: 10139551
    Abstract: An apparatus includes a first display, an indicium, and a second display. The second display can include a light-generating source deposited on a substrate. The second display illuminates the indicium and the second display has a thickness of less than 0.25 millimeters. The apparatus also includes one or more controllers communicatively coupled to the first display and the second display and configured to control states of the first display and the second display.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: November 27, 2018
    Assignee: Rohinni, LLC
    Inventors: Cody Peterson, Andrew Huska
  • Patent number: 10136485
    Abstract: In accordance with various embodiments, an overall optical characteristic of light emitted by an illumination system having multiple strings of light-emitting elements, as well as an overall intensity of the light emitted by the illumination system, are independently selected via controlling the strings over multiple time intervals.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: November 20, 2018
    Assignee: COOLEDGE LIGHTING INC.
    Inventors: William P. Coetzee, Paul Jungwirth, Michael A. Tischler
  • Patent number: 10104730
    Abstract: Described is an LED replacement bulb having the same physical shape and appearance as a fluorescent bulb, but having the superior illumination characteristics of LED lights (e.g., the ability to dim, the absence of flicker) and the ability to switch (with or without transition) from a first color to a second color while the LED lighting assembly undergoes a dimming or brightening procedure. Furthermore, because the bulb uses the output of the light fixture (e.g., the output of the ballast of a fluorescent light fixture) as the cue for whether to change colors, no retrofitting of the lighting system is required (as might be the case if more modern, network-addressable light units were required).
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: October 16, 2018
    Assignee: B/E Aerospace, Inc.
    Inventors: Luis Sam, Brendan Upton, Eric Johannessen, Denis Velis
  • Patent number: 10098195
    Abstract: A circuit arrangement for operating at least a first and a second cascade of LEDs is provided including an input having a first and a second input connection for coupling to a rectified AC supply voltage, a voltage equalization series impedance, and at least a higher and a lower LED units which include cascades. The connection of the LED cascade that is not coupled to a first diode is a second node, and the second node of the lowest LED unit is coupled to a voltage equalization series impedance such that the impedance is coupled in series between the second node and the second input connection. In not-the-lowest LED unit, a fourth node is at any rate a node of the circuit arrangement that is at a lower potential, at least during a prescribable period during the circuit arrangement operation, than the second node.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: October 9, 2018
    Assignee: OSRAM GmbH
    Inventor: Andreas Seider
  • Patent number: 10088133
    Abstract: A mounting substrate includes: a substrate; a first terminal, a fifth terminal, and a sixth terminal which are disposed in a first region; a second terminal disposed in a second region; a third terminal and a seventh terminal which are disposed in a third region; and a fourth terminal disposed in a fourth region. The mounting substrate includes: a first connecting line which electrically connects the fifth terminal and the second terminal; a second connecting line which electrically connects the sixth terminal and the third terminal; and a third connecting line which electrically connects the seventh terminal and the fourth terminal.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: October 2, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masumi Abe, Toshifumi Ogata, Toshiaki Kurachi
  • Patent number: 10076011
    Abstract: A method of adjusting a correlated color temperature (CCT) of a light provided by a lighting fixture includes receiving, by a DALI command converter device, a DALI dim level command indicating a dim level for the light provided by the lighting fixture. The method further includes providing a first output signal to adjust a dim level of a first light emitted by a first light emitting diode (LED) light source to a first dim level. The method also includes providing a second output signal to adjust a dim level of a second light emitted by a second LED light source to a second dim level that is different from the first dim level. The light provided by the lighting fixture is a combination of the first light and the second light. The DALI command converter device generates the first output signal and the second output signal based on the DALI dim level command.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: September 11, 2018
    Assignee: Cooper Technologies Company
    Inventors: Soroush Amidi, Kyle Joseph Van Bavel
  • Patent number: 10056561
    Abstract: The present invention discloses an novel organic material containing indenotriphenylene derivatives and organic EL device using the indenotriphenylene derivatives as hole blocking layer(HBL), electron transport layer(ETL) and/or phosphorescent host can efficiently lower driving voltage, lower power consumption and increase the efficiency. The present invention further relates to the methods of preparation for the indenotriphenylene derivatives and organic EL device comprising these derivatives.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: August 21, 2018
    Inventor: Feng-Wen Yen
  • Patent number: 10057953
    Abstract: The present application relates to a LED module (10) for being connected to a DC power supply (11), the LED module comprising a multilayer board (2) comprising a metal surface (2a) and a dielectric layer (2b) arranged thereon, at least one LED chip (1) arranged on the metal surface (2a) of the multilayer board, an encapsulation layer (3) arranged above the at least one LED chip (1), and current regulator means (4) arranged on the multilayer board, wherein the current regulator means (4) are designed to convert a DC input provided to the module (10) to a predefined DC output for being provided to the at least one LED chip (1).
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: August 21, 2018
    Assignees: TRIDONIC JENNERSDORF GMBH, TRIDONIC GMBH & CO KG
    Inventors: Florian Wimmer, Steffen Riemer, Istvan Bakk, Eduardo Pereira, John Schonberger
  • Patent number: 10045419
    Abstract: A color-temperature adjustable light-emitting diode (LED) lighting device and a method for adjusting the color temperature of an LED lighting device are provided. The color-temperature adjustable LED lighting device includes: a power supply module, a micro-control unit (MCU), an adjustable LED driving power supply having a positive output terminal and a negative output terminal, a cool white LED array, a warm white LED array, a first switch circuit, a second switch circuit, a first current detection circuit, and a second current detection circuit. The power supply module is connected to an input terminal of the MCU and an input terminal of the adjustable LED driving power supply.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: August 7, 2018
    Assignee: SENGLED CO., LTD.
    Inventors: Mingshuai Wang, Zhenfeng Ding, Zhibin Tian, Jinxiang Shen
  • Patent number: 10015855
    Abstract: Various embodiments are described herein that relate to systems and methods for selectively providing current to power LEDs. The techniques introduced here can enable smooth dimming of the LEDs from maximum brightness down to “actual extinction” or “pseudo-extinction.” More specifically, the LEDs can be dimmed to extinction without any significant gaps in the levels of brightness (i.e., a noticeable drop rather than a smooth transition between brightness levels). Various pulse width modulation (PWM) and shunting techniques may be used to control the power provided to each color channel of an LED board. Conventionally, PWM often causes LEDs to produce an undesirable acoustic effect. However, by dithering the PWM signals between multiple predetermined positions once the frequency enters the audible range (e.g., below 25 kHz), the cumulative acoustic effect instead becomes white noise.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: July 3, 2018
    Assignee: LUMENETIX, INC.
    Inventor: Herman Ferrier
  • Patent number: 10004128
    Abstract: In embodiments of the present invention improved capabilities are described for systems and methods that employ a control component and/or power source integrated in an LED based light source to control and/or power the LED light source wirelessly. In embodiments, the LED based light source may take the form of a standard light bulb that plugs into a standard lighting socket or fixture.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: June 19, 2018
    Assignee: WIRELESS ENVIRONMENT, LLC
    Inventors: Michael V. Recker, David B. Levine
  • Patent number: 9999104
    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.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: June 12, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masahiro Naruo, Kenichi Fukuda, Shinji Makimura, Akira Nakajo
  • Patent number: 9974137
    Abstract: A light emitting device which can adjust color temperature as power is supplied from a single power source comprises an anode electrode land; a cathode electrode land; a first light emitting unit and a second light emitting unit; a low pass filter including a capacitance member which is provided in parallel with the first light emitting unit and the second light emitting unit; and a resistance member which is provided in series with the first light emitting unit and the second light emitting unit. A phosphor which is included in the first light emitting unit and the second light emitting unit includes a red phosphor which is excited by the primary light that is emitted from the LED element and emits light with a peak light emission wavelength into a red region, and a green phosphor which is excited by the primary light that is emitted from the LED element and emits light with a peak light emission wavelength into a green region.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: May 15, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yoshihiro Kawaguchi, Tomokazu Nada, Makoto Matsuda, Hiroaki Onuma, Osamu Jinushi, Toshio Hata
  • Patent number: 9970628
    Abstract: An LED unit module, a light-emitting device, and a light source system. The LED unit module comprises a substrate and an LED chipset arranged on the substrate. The LED chipset comprises at least five LED chips, where the LED chips are in a tight arrangement with each other, and the contour of a light-emitting side of the LED chipset is close to a regular hexagon. The LED chipset comprises LED chips of at least four colors, where the four colors are red, blue, green, and amber. The LED unit module allows for prevention of increased etendue and for uniform mixing of lights.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: May 15, 2018
    Inventor: Quan Zhang
  • Patent number: 9974131
    Abstract: The present invention provides a light-emitting component for a backlight module, which comprises a first positive input end, a first negative input end and a plurality of branches connected in parallel therebetween, each of the plurality of the branches comprising a plurality of LEDs connected in series, wherein, in the case that the numbers of LEDs in the respective branches are not exactly the same, a voltage divider is connected in series in at least one of the branches so that currents flowing through respective branches are the same. Correspondingly, the present invention further provides a backlight module and a liquid crystal display device. In the present invention, any number of LEDs can be provided in each of the branches in the light-emitting component, which expands the irradiation scope of light, guarantees the safe distance between adjacent LEDs, and further improves product quality.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: May 15, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhihui Zeng, Lingyun Shi
  • Patent number: 9955537
    Abstract: Disclosed is a rectifierless light string that uses bidirectional LEDs. Each LED is illuminated on both the positive and the negative portion of an AC signal so that the AC signal does not have to be rectified. In addition, LEDs are mounted on LED holder plugs, which are designed to allow the LEDs and bypass resistors to be automatically inserted in the LED holder plug. The LED holder plugs are inserted into a light string socket that contains a shunt switch that provides a conduction path when the LED holder plug is not firmly inserted in the light string socket. In this manner, conduction can occur in the light string when the LED holder plug is dislodged.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 24, 2018
    Assignee: 1 ENERGY SOLUTIONS, INC.
    Inventor: Jing Jing Yu
  • Patent number: 9949340
    Abstract: The present invention discloses a color changing light and controlling method and apparatus thereof. The controlling method for a color changing light includes: each terminal of one way of four color substrate being connected together and acted as a common end, the common end being connected to a first voltage; two ways of the four color substrate being set up as a group, other terminals of the two ways being connected to a second voltage and a third voltage respectively; and polarities and voltages of the first voltage, the second voltage, and the third voltage being adjusted to turn on or turn off the four color substrate.
    Type: Grant
    Filed: January 22, 2017
    Date of Patent: April 17, 2018
    Assignee: NINGBO WELL ELECTRIC APPLIANCE CO., LTD.
    Inventor: Guolin Yu
  • Patent number: 9936549
    Abstract: Lighting and/or display device with low-voltage individual lighting components such as a light-emitting diode, characterized in that it comprises a plurality of individual modules (1) electrically connected together so as to be able to be arranged in series, at least one module comprising a lower terminal (2) and a upper terminal (3), between which are arranged at least two individual lighting components and a plurality of switches (5, 7, 8), so as to be able to arrange two individual lighting components in series or in parallel between the two lower (2) and upper (3) terminals.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: April 3, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Ghislain Despesse
  • Patent number: 9907135
    Abstract: For controlling a level of luminance produced by a color light-emitting diode (LED) array, a method includes: for a predetermined flux bit-slice period, activating a color enable signal to select a primary color LED and to select a predetermined light flux magnitude set-point; selectively charging an energy storage device and discharging the energy storage device through the selected primary color LED to generate a light flux output during the flux bit-slice period; adjusting a rate of selectively charging the energy storage device to maintain a magnitude of the light flux output at the predetermined light flux magnitude set-point during the flux bit-slice period; and adjusting the predetermined light flux magnitude set-point over the life of the selected LED as the selected LED ages as a function of an anode-to-cathode voltage drop across the selected LED for a given magnitude of current flowing through the selected LED.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: February 27, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jeffrey Scott Farris, Michael David McCormick, Jason Ryan Thompson
  • Patent number: 9872358
    Abstract: A light unit (10) is disclosed including a plurality of lighting devices (22, 24, 26), in particular a plurality of LEDs, for emitting light. The light unit comprises connection terminals (12, 14) for connecting the light unit to an external power supply (16) and for receiving an input voltage (V10) and/or an input current (IT) from the external power supply. A first current path (18) and a second current path (20) are connected to the connection terminals each comprising at least one lighting device, wherein the first current path and the second current path are connected in parallel to each other. The second current path has a controllable resistor (28) for controlling an electrical current I1 in the second current path and a current limiter (30) for limiting the current in the second current path.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: January 16, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Johannes Gerrit Jan Beijer, Bertrand Johan Edward Hontele, Patrick Alouisius Martina De Bruycker
  • Patent number: 9872355
    Abstract: A control circuit for an LED driving circuit having a rectifier and a power transistor for driving an LED load, can include: a control signal regulation circuit configured to control a driving voltage of the power transistor to vary with a rectifier output voltage to control the variation of a current flowing through the power transistor to be consistent with that of the rectifier output voltage to decrease a power loss of the power transistor; and the control signal regulation circuit being configured to control the driving voltage of the power transistor to vary with the rectifier output voltage to control the variation of the current flowing through the power transistor to be opposite to that of the rectifier output voltage to improve a power factor of the LED driving circuit.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: January 16, 2018
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Jianxin Wang, Huiqiang Chen
  • Patent number: 9867243
    Abstract: Apparatus and associated methods reduce harmonic distortion of a excitation current by diverting the excitation current substantially away from a number of LEDs arranged in a series circuit until the current or its associated periodic excitation voltage reaches a predetermined threshold level, and ceasing the current diversion while the excitation current or voltage is substantially above the predetermined threshold level. In an illustrative embodiment, a rectifier may receive an AC (e.g., sinusoidal) voltage and deliver unidirectional current to a string of series-connected LEDs. An effective turn-on threshold voltage of the diode string may be reduced by diverting current around at least one of the diodes in the string while the AC voltage is below a predetermined level. In various examples, selective current diversion within the LED string may extend the input current conduction angle and thereby substantially reduce harmonic distortion for AC LED lighting systems.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: January 9, 2018
    Assignee: Once, Inc.
    Inventor: Zdenko Grajcar
  • Patent number: 9867240
    Abstract: A filter circuit comprising a first feedback circuit configured to: receive a sensed-voltage-level-signal representative of a sensed voltage across a current sensing element; receive a voltage-set-point-signal; and set a regulation-control-signal for a current regulation device such that the sensed-voltage-level-signal tends towards the voltage-set-point-signal. The filter circuit also comprises a second feedback circuit configured to: receive a predetermined-threshold-signal; and receive a regulation-control-voltage-signal, representative of a voltage level of the regulation-control-signal. The second feedback circuit is configured to adjust the voltage-set-point-signal in accordance with a comparison between the regulation-control-voltage-signal and the predetermined-threshold-signal.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: January 9, 2018
    Assignee: NXP B.V.
    Inventors: Leendert van den Broeke, Tobias Doom