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公开(公告)号：US12133303B2
公开(公告)日：2024-10-29
申请号：US18374046
申请日：2023-09-28
发明人： Ming-Shun Lee , Wei-Long Lee , Shih-Meng Liao , Chih-Wei Liu
摘要： A light emitting device controls its mixed CCT by the configuration of at least one light emitter, at least one diode and at least two power distribution components. The present disclosure is mainly based on the hardware design of diode and jumper, which effectively replaces the resistors and manual switches of the conventional light emitting device with diodes, wherein the resistors and the manual switches of the conventional light emitting device cause voltage instability and other problems. The present disclosure can achieve the demand for miniaturization of the light emitting device by plugging the jumper into pins, and further can achieve the main advantages of stabilizing the voltage of the overall light emitting device, thereby stabilizing the luminous performance of the overall light emitting device, and emitting the mixed light with the required CCT. The present disclosure also illustrates a lamp assembly using the aforementioned light emitting device.
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公开(公告)号：US20240130017A1
公开(公告)日：2024-04-18
申请号：US18466857
申请日：2023-09-14
IPC分类号： H05B45/325 , H05B45/10 , H05B45/34
CPC分类号： H05B45/325 , H05B45/10 , H05B45/34
摘要： A control method for a lamp system based on RGB wiring arrangement includes outputting a first PWM signal through a connecting line and a second PWM signal through another connecting line; wherein, the first PWM signal is used for controlling an on/off time interval of a first switch device on the connecting line to generate a continuous variable level at two terminals of the resistor on the connecting line, the continuous variable level forms a digital signal, and the second PWM signal is used for controlling the second switch device on the another connecting line to be normally-off to provide a stable power supply; the lamps acquiring corresponding control information from the digital signal through ID matching; and after the control information is decoded by the decoding module, currents transmitted to the coloured light emitting modules being regulated to control the coloured light emitting modules.
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公开(公告)号：US11950338B2
公开(公告)日：2024-04-02
申请号：US17366257
申请日：2021-07-02
发明人： Wen-Chi Peng
摘要： A parallel sequenced LED light string includes a plurality of LED modules. The LED modules are connected in parallel through a power wire with a plurality of wire resistances. Each of the LED modules includes an impedance component capable of providing an impedance characteristic. The parallel-connected LED modules receive a supply power, and the LED modules respectively get different voltages through the wire resistances and the impedance components from the supply power so as to sequencing the LED modules.
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公开(公告)号：US11825578B2
公开(公告)日：2023-11-21
申请号：US17628067
申请日：2020-07-16
申请人： eldoLAB Holding B.V.
IPC分类号： H05B45/385 , H05B45/34 , H05B45/54
CPC分类号： H05B45/385 , H05B45/34 , H05B45/54
摘要： A method for starting up an illuminating process of a plurality of series connected LEDs by means of a LED driver is described, whereby a maximum allowed voltage output of the LED driver is lower than a forward voltage of the plurality of series connected LEDs in a cold state.
The method comprises:
d) providing a first current, in value lower than a desired current, by the LED driver to the plurality of series connected LEDs, resulting in a forward voltage across the plurality of series connected LEDs lower than the maximum allowed voltage output of the LED driver,
e) waiting during a predetermined wait time period,
f) stepping up of the first current to a second current provided by the LED driver to the plurality of series connected LEDs.-
公开(公告)号：US11812526B2
公开(公告)日：2023-11-07
申请号：US17504646
申请日：2021-10-19
发明人： Ming-Shun Lee , Wei-Long Lee , Shih-Meng Liao , Chih-Wei Liu
摘要： A light emitting device controls its mixed CCT by the configuration of at least one light emitter, at least one diode and at least two power distribution components. The present disclosure is mainly based on the hardware design of diode and jumper, which effectively replaces the resistors and manual switches of the conventional light emitting device with diodes, wherein the resistors and the manual switches of the conventional light emitting device cause voltage instability and other problems. The present disclosure can achieve the demand for miniaturization of the light emitting device by plugging the jumper into pins, and further can achieve the main advantages of stabilizing the voltage of the overall light emitting device, thereby stabilizing the luminous performance of the overall light emitting device, and emitting the mixed light with the required CCT. The present disclosure also illustrates a lamp assembly using the aforementioned light emitting device.
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公开(公告)号：US11737185B2
公开(公告)日：2023-08-22
申请号：US17406484
申请日：2021-08-19
发明人： Wang Zhanxiang , Weng Shengying , Kailang Huang
IPC分类号： H05B45/24 , H05B45/3725 , H05B45/34 , H05B45/325
CPC分类号： H05B45/24 , H05B45/325 , H05B45/34 , H05B45/3725
摘要： The present invention discloses lamp bead chipsets and colored lamp devices. The colored lamp device includes a power off signal controller and several lamp bead chipsets connected in series and/or in parallel. The power off signal controller generates power supply signals having alternating high and low levels and different high level widths, and load the power supply signals onto a power cord and a ground wire. The lamp bead chipset controls the display state of each LED in an LED lamp set according to the different high level widths and output on the power cord and the ground wire. Several power supply high level widths on the power cord and the ground wire are adjusted to generate codes, so as to achieve different color change effects. The lamp bead chipsets and colored lamp devices described herein reduce the complexity of traces and the wire costs.
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公开(公告)号：US20230217565A1
公开(公告)日：2023-07-06
申请号：US17926249
申请日：2021-05-26
申请人： SIGNIFY HOLDING B.V.
发明人： Haimin TAO , Werner Friedrich HORIKX , Matthias WENDT , Martinus Petrus CREUSEN , Bernd ACKERMANN
IPC分类号： H05B45/345 , H05B45/56 , H05B45/14 , H05B45/34
CPC分类号： H05B45/345 , H05B45/56 , H05B45/14 , H05B45/34
摘要： The invention relates to an incorporation of a current limiting/regulating circuit on a luminaire board for ensuring that the luminaire board will automatically operate at its desired current after a replacement. Since the current control at the luminaire board causes an initial mismatch between the current supply of the driver and the demand of the luminaire board, the driver output voltage will drift towards the maximum output voltage of the driver. When the maximum output voltage is reached, the driver is configured to operate in constant-voltage (CV) mode, sense the output current and reduce its output current to the same value as consumed by current-controlled luminaire board. Alternatively, the driver may gradually reduce the setpoint of the output current until it just leaves the CV mode and stay at that setpoint. In this way, the driver will automatically operate at the correct current of a newly installed luminaire board without any action from the user.
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公开(公告)号：US20240349408A1
公开(公告)日：2024-10-17
申请号：US18755296
申请日：2024-06-26
发明人： Chao XU , Yifan DAI , Hao XUE , Zhengyi WEI
IPC分类号： H05B45/34 , H05B45/355 , H05B45/50
CPC分类号： H05B45/34 , H05B45/355 , H05B45/50
摘要： The invention relates to an integrated circuit and a driving application circuit for a LED tunnel lamp using a three-phase alternating-current mains power supply. The integrated circuit includes a voltage stabilizing circuit (1), an under-voltage protection circuit (2), a comparison amplification circuit (3), and a low-voltage control circuit (4). The invention has the characteristics of high LED driving power source efficiency, high power factor (PF), small harmonic distortion, high reliability, good optical strobe resistance, low cost, etc. In addition, as a result of the three-phase alternating-current mains power supply, an input voltage is high, and for tunnel lamps with the same power, the current flowing through a wire cable of an illumination system is particularly small, such that the cost of the wire cable can be greatly reduced, the power source conversion efficiency is greater than 95%, the PF is greater than 0.92, the harmonic distortion is less than 20%, the optical strobe depth is less than 20%, and the luminous efficacy is increased by more than 20%.
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公开(公告)号：US20240334565A1
公开(公告)日：2024-10-03
申请号：US18604826
申请日：2024-03-14
申请人： ROHM CO., LTD.
发明人： Daisuke KAMBARA
IPC分类号： H05B45/34 , H05B45/10 , H05B45/3725
CPC分类号： H05B45/34 , H05B45/10 , H05B45/3725
摘要： A light emitting element drive device includes: a first voltage holder configured to hold a first difference voltage, which is a difference between an error voltage when a light emitting element is in an off state and a first voltage that is a lowest voltage of a slope voltage; a second voltage holder configured to hold a second difference voltage, which is a difference between the error voltage when the light emitting element is in an on state and the first voltage of the slope voltage; and a corrector configured to correct a voltage difference between the error voltage and the first voltage of the slope voltage based on a difference between the second difference voltage and the first difference voltage.
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公开(公告)号：US20240206038A1
公开(公告)日：2024-06-20
申请号：US18178106
申请日：2023-03-03
发明人： Wen-Chi PENG
摘要： An LED equipment with constant voltage control receives a DC voltage and includes a first controller, at least one LED, at least one switch and a voltage control circuit. The first controller includes a positive end and a negative end, and the positive end receives the DC voltage. The LED includes an anode end and a cathode end, and the LED is correspondingly coupled in series with the switch, so that a number of the LED corresponds to the number of switch. The voltage control circuit is coupled to the positive end and the negative end, and the voltage control circuit controls a voltage across the positive end and the negative end to a fixed voltage, so that a first current flowing through the LED inside each LED equipment is consistent.
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