WO2023179301A1 - Source de lumière bidirectionnelle à commande de ligne de signal - Google Patents

Source de lumière bidirectionnelle à commande de ligne de signal Download PDF

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Publication number
WO2023179301A1
WO2023179301A1 PCT/CN2023/078067 CN2023078067W WO2023179301A1 WO 2023179301 A1 WO2023179301 A1 WO 2023179301A1 CN 2023078067 W CN2023078067 W CN 2023078067W WO 2023179301 A1 WO2023179301 A1 WO 2023179301A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
module
port
signal line
light source
Prior art date
Application number
PCT/CN2023/078067
Other languages
English (en)
Chinese (zh)
Inventor
杨颖汉
Original Assignee
杭州昀芯光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 杭州昀芯光电科技有限公司 filed Critical 杭州昀芯光电科技有限公司
Publication of WO2023179301A1 publication Critical patent/WO2023179301A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the invention relates to the field of LED decorative lighting, and in particular to a bidirectional light source with signal line control.
  • the home decorative lighting market requires color control effects on the one hand, and warm white effects on the other.
  • the common practice is to cascade the signal lines to realize the full-color control chip to add special control channels, and form a four-channel control method including the warm white LED control channel based on the three RGB control channels.
  • This method requires the use of blue LED dot phosphor to produce warm white LEDs during lamp bead packaging, which can easily lead to deviations in the color temperature of warm white LEDs.
  • the purpose of the present invention is to provide a bidirectional light source with signal line control, which uses a warm white LED driven by a reverse current to add a warm white color to the RGB full color control, and further combines the warm white color and the RGB full color.
  • the duty cycle mixing of color systems obtains a wider high-precision spectral range.
  • a bidirectional light source with signal line control, the light source includes:
  • the signal line controls the light-emitting module and the reverse light-emitting module, and the signal line controls the light-emitting module and the reverse light-emitting module and is connected in parallel to the first port of the power line and the second port of the power line of the light source;
  • the signal line controlled lighting module includes an LED lantern group and an LED driver for driving the LED lantern group according to the signal line signal;
  • the LED driver drives the LED lantern group according to the signal line signal; the potential of the first port of the power line is lower than the power supply When the second port is connected, the reverse light-emitting module works.
  • the signal line controlled light-emitting module and the reverse light-emitting module can be packaged together, welded together through other carriers, or connected together through wires of several lengths.
  • the reverse light-emitting module may be a single light-emitting diode, a plurality of light-emitting diodes, or a light-emitting module including a control module.
  • the LED driver includes: a reverse current blocking module and a signal decoding control module;
  • the input end of the reverse current prevention module is connected to the first port of the power line, the output end of the reverse current prevention module is connected to the power supply end of the signal decoding control module, and the signal decoding control module is driven according to the signal line signal The LED lantern set. It should be understood that the working current of part of the circuits of the signal decoding control module may be passed through the reverse current blocking module, or the working current of all circuits of the signal decoding control module may be passed through the reverse current blocking module.
  • the signal decoding control The control module drives the LED lantern group according to the signal line signal.
  • the signal line signal may be valid as high pulse, valid as low pulse, or valid as a combination of high pulse and low pulse.
  • a high pulse of a given duration T 1 represents a logic 0, and a high pulse of a given duration T 2 represents a logic 1.
  • a low pulse of a given duration T3 represents a logic zero and a low pulse of a given duration T4 represents a logic one.
  • logic 0 or logic 1 can be represented by a combination of high pulses of different given durations and low pulses of different given durations.
  • the signal line signal may also be a frequency modulated signal of voltage or current.
  • the signal line signal has a high pulse length of 0.5us and a low pulse length of 2.0us to represent a logic 0, and a low pulse length of 0.5us and a high pulse length of 2.0us represents a logic 1.
  • the input end of the reverse current prevention module is connected to the first port of the power line, the output end of the reverse current prevention module is connected to the power supply end of the signal decoding control module, and the ground of the signal decoding control module is connected to the power line.
  • the signal decoding control module drives the LED lantern group.
  • the LED lantern groups can be connected to a common anode, the cathodes of the LEDs in the LED lantern group are respectively connected to the output of the signal decoding control module, and the common anode of the LED lantern group can be connected to the reverse current
  • the output terminal of the blocking module and the common anode of the LED lantern group can also be connected to the input terminal of the reverse current blocking module.
  • the LED lantern groups can be connected with a common cathode.
  • the anodes of the LEDs in the LED lantern group are respectively connected to the output of the signal decoding control module.
  • the LED lantern group has a common cathode connected with the power supply. line second port.
  • the reverse current blocking module may be a single device or a combination of multiple devices.
  • the reverse current blocking module may be a resistor, and the reverse current is limited to a range of less than 500 ma through the resistor.
  • the reverse current blocking module is a unidirectional conductive module, and the reverse current blocking module The module is turned on when the potential of the input terminal is higher than the output terminal of the reverse current blocking module, and is turned off when the potential of the input terminal of the reverse current blocking module is lower than the output terminal of the reverse current blocking module.
  • the one-way conductive module is a diode, the anode of the diode is connected to the first port of the power line, and the cathode is connected to the power supply end of the signal decoding control module; or the one-way conductive element is formed of an NPN transistor.
  • An equivalent diode, the collector and base of the NPN transistor are connected to the first port of the power line, and the emitter is connected to the power supply end of the signal decoding control module; or the unidirectional conductive element is a PNP transistor In the equivalent diode formed, the collector and base of the PNP transistor are connected and then connected to the power supply end of the signal decoding control module, and the emitter is connected to the first port of the power line.
  • the reverse current blocking module and the signal decoding control module are integrated in the same integrated circuit; integration in the same integrated circuit can reduce device costs and product production costs.
  • the reverse current prevention module and the signal decoding control module are implemented by different independent modules, which can be implemented by a single chip or module respectively.
  • the reverse lighting module is composed of several LEDs.
  • the number of LEDs may be one, or more than one.
  • the plurality of LEDs may be in a parallel structure, may be connected in parallel first and then in series, or may be connected in series first and then in parallel.
  • the reverse light-emitting module may be in a warm white color.
  • the reverse light-emitting module can operate in a constant state operating mode, a controlled changing state operating mode, or a light-emitting module with a wide spectral range controlled by a signal line.
  • the LED driver includes a signal output port, and after the signal decoding control module decodes and receives the control signal of the LED driver from the signal line, it outputs the remaining signal from the signal output port.
  • the LED driver receives an N-bit logic coded data packet from the signal line, wherein M-bit logic codes are used to control the LED lantern group, and the remaining (M-N) bits of logic codes are output by the signal. port output.
  • N bits refer to several bits, and the corresponding value can be selected according to the required application scenario or product.
  • the encoding method of the data packets received by the LED driver from the signal line may be different from the encoding method output by the LED driver.
  • the LED lantern set includes three primary color light-emitting diodes: red, green and blue.
  • the present invention uses the signal line to control the light-emitting module and the reverse light-emitting module to obtain a broad chromatographic effect.
  • the light source of the present invention uses bidirectional power supply, drives the LED lantern group through forward current and signal line signals to obtain a spectral range, and then adds another spectral range through reverse direction, without increasing the above-mentioned
  • the signal line controls the cost of the light-emitting module, a warm white color with high-precision color temperature can be obtained.
  • Figure 1 shows a two-way light source with signal line control
  • Figure 2 is a schematic diagram of the signal line signal logic 0 and logic 1;
  • FIG. 3 shows the input port data packet and the output port output data packet.
  • a bidirectional light source 1 with signal line control in this embodiment includes:
  • the signal line controls the light-emitting module 11 and the reverse light-emitting module 12.
  • the signal line controls the light-emitting module 11 and the reverse light-emitting module 12 and is connected in parallel to the first port 13 of the power line and the second port 14 of the power line of the light source;
  • the signal line controlled lighting module 11 includes an LED lantern group 111 and an LED driver 112 for driving the LED lantern group 111 according to the signal of the signal line 15;
  • the LED driver 112 drives the LED lantern group 111 according to the signal of the signal line 15; when the potential of the first port 13 of the power line is lower than the second port 14 of the power line, reversely Work to the lighting module 12.
  • the LED driver 112 includes: a reverse current prevention module 1121, a signal decoding control module 1122;
  • the input end of the reverse current prevention module 1121 is connected to the first port 13 of the power line, and the output end of the reverse current prevention module 1121 is connected to the signal decoding control module 1122.
  • the signal decoding control module 1122 drives the LED lantern group 111 according to the signal from the signal line 15.
  • the LED driver 112 includes a signal output port 16. After decoding and receiving the control signal of the LED driver from the signal line 15, the signal decoding control module 1122 outputs the remaining signal from the output port 16.
  • the LED lantern group 111 is connected with a common anode.
  • the LED lantern group 111 includes a red light-emitting diode 1111, a green light-emitting diode 1112, and a blue light-emitting diode 1113.
  • the red light-emitting diode 1111, the green light-emitting diode 1112, and the blue light-emitting diode 1113 The cathodes of the red LED 1111, the green LED 1112 and the blue LED 1113 are respectively connected to the output of the electrical signal decoding control module 1122, and the common anode of the red LED 1111, the green LED 1112 and the blue LED 1113 is connected to the output end of the reverse current prevention module 1121.
  • the reverse current blocking module 1121 is a diode, the anode of the diode is connected to the first port 13 of the power line, and the cathode is connected to the signal decoding control module 1122.
  • the high pulse length of the signal line 15 is 0.5us and the low pulse length is 2.0us, indicating logic 0 (21), and the low pulse length is 0.5us and the high pulse length is 2.0us.
  • the LED driver 112 receives 48-bit logic from the signal line 15.
  • the data bits received by the LED driver 112 can select corresponding values according to the required application scenarios or products, and the number of data bits received can be dynamically changed.
  • the invention controls the light-emitting module and the reverse light-emitting module through signal lines, and the combination obtains a broad chromatographic effect.
  • the light source of the present invention uses bidirectional power supply, drives the LED lantern group through forward current and signal line signals to obtain a spectral range, and then adds another spectral range through the reverse direction without adding a signal line.
  • a warm white color with high-precision color temperature can be obtained.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)

Abstract

Divulguée dans la présente invention est une source de lumière bidirectionnelle à commande de ligne de signal, comprenant un module électroluminescent de commande de ligne de signal et un module électroluminescent inverse. Le module électroluminescent à commande de ligne de signal et le module électroluminescent inverse sont connectés en parallèle à un premier port de ligne électrique et à un second port de ligne électrique de la source de lumière ; le module électroluminescent à commande de ligne de signal comprend un groupe de lampes colorées à DEL et un pilote de DEL utilisé pour commander le groupe de lampes colorées à DEL selon un signal de ligne de signal ; lorsque le potentiel du premier port de ligne électrique est supérieur à celui du second port de ligne électrique, le pilote de DEL commande le groupe de lampes colorées à DEL en fonction du signal de ligne de signal ; lorsque le potentiel du premier port de ligne électrique est inférieur à celui du second port de ligne électrique, le module électroluminescent inverse fonctionne. La présente invention résout le problème selon lequel, dans la mise en œuvre d'un produit de commande de couleur complète par cascade de lignes de signal, le passage d'un courant inverse n'est pas autorisé. Au moyen de DEL blanches chaudes entraînées par un courant inverse, un système de couleur blanche chaude est en outre fourni sur la base d'une commande de couleur complète RVB, et en outre, en mélangeant le rapport cyclique du système de couleur blanche chaude avec le rapport cyclique d'un système de couleur complète RVB, une plage spectrale de haute précision plus large est obtenue.
PCT/CN2023/078067 2022-03-23 2023-02-24 Source de lumière bidirectionnelle à commande de ligne de signal WO2023179301A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210291342.8 2022-03-23
CN202210291342.8A CN114554646A (zh) 2022-03-23 2022-03-23 一种带信号线控制的双向光源

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WO2023179301A1 true WO2023179301A1 (fr) 2023-09-28

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114554646A (zh) * 2022-03-23 2022-05-27 杭州昀芯光电科技有限公司 一种带信号线控制的双向光源
CN114867150A (zh) * 2022-05-30 2022-08-05 杭州昀芯光电科技有限公司 串并联的电源线脉冲信号触发运算的双向彩灯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2051565A2 (fr) * 2007-10-19 2009-04-22 Prodisc Technology Inc. Dispositif électroluminescent réglable selon la température des couleurs et son circuit de contrôle
CN208478372U (zh) * 2018-06-15 2019-02-05 永林电子有限公司 一种内置ic多功能全彩led
WO2019219518A1 (fr) * 2018-05-15 2019-11-21 Signify Holding B.V. Circuit d'éclairage et procédé de commande
CN212848092U (zh) * 2020-09-19 2021-03-30 深圳市君辰装饰设计工程有限公司 一种室内装修用多功能智能开关结构
CN215061369U (zh) * 2021-06-09 2021-12-07 中山市光圣半导体科技有限公司 一种多色光源
CN114554646A (zh) * 2022-03-23 2022-05-27 杭州昀芯光电科技有限公司 一种带信号线控制的双向光源

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2051565A2 (fr) * 2007-10-19 2009-04-22 Prodisc Technology Inc. Dispositif électroluminescent réglable selon la température des couleurs et son circuit de contrôle
WO2019219518A1 (fr) * 2018-05-15 2019-11-21 Signify Holding B.V. Circuit d'éclairage et procédé de commande
CN208478372U (zh) * 2018-06-15 2019-02-05 永林电子有限公司 一种内置ic多功能全彩led
CN212848092U (zh) * 2020-09-19 2021-03-30 深圳市君辰装饰设计工程有限公司 一种室内装修用多功能智能开关结构
CN215061369U (zh) * 2021-06-09 2021-12-07 中山市光圣半导体科技有限公司 一种多色光源
CN114554646A (zh) * 2022-03-23 2022-05-27 杭州昀芯光电科技有限公司 一种带信号线控制的双向光源

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