WO2012139293A1 - Led light-emitting device - Google Patents

Led light-emitting device Download PDF

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Publication number
WO2012139293A1
WO2012139293A1 PCT/CN2011/072781 CN2011072781W WO2012139293A1 WO 2012139293 A1 WO2012139293 A1 WO 2012139293A1 CN 2011072781 W CN2011072781 W CN 2011072781W WO 2012139293 A1 WO2012139293 A1 WO 2012139293A1
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WO
WIPO (PCT)
Prior art keywords
constant current
led
led lighting
control chip
emitting diode
Prior art date
Application number
PCT/CN2011/072781
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French (fr)
Chinese (zh)
Inventor
文茂强
Original Assignee
深圳市长运通光电技术有限公司
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Application filed by 深圳市长运通光电技术有限公司 filed Critical 深圳市长运通光电技术有限公司
Priority to PCT/CN2011/072781 priority Critical patent/WO2012139293A1/en
Publication of WO2012139293A1 publication Critical patent/WO2012139293A1/en

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    • 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
    • H05B45/395—Linear regulators
    • 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]
    • H05B45/10—Controlling the intensity 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
    • H05B45/345—Current stabilisation; Maintaining constant current
    • 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
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the invention belongs to the technical field of LEDs, and in particular to an LED lighting device.
  • LEDs are widely used in the field of lighting and display technology due to their small size, low power consumption and long service life.
  • the power supply mode of the LED generally adopts two types of constant current driving or constant voltage driving.
  • a constant current source is generally configured for each single LED, or a plurality of LEDs are connected in series, and is supplied by a constant current source, and the latter has the advantage of lowering the circuit design than the former. The complexity and cost savings of the product.
  • LED lighting devices such as LED display screens, various LED lamps, etc.
  • each LED module is composed of a plurality of LEDs, and in order to realize LED
  • the different display functions of the illuminating device often require different illuminating brightness of the plurality of LED modules. Therefore, the above-mentioned constant current driving power supply mode is not suitable for the power supply of the LED module in the LED illuminating device.
  • the LED power supply device provided by the prior art currently adopts a power supply mode for separately supplying power to each LED module. Referring to the above-mentioned LED power supply mode, the circuit design of the power supply mode currently used by the LED light-emitting device is complicated, and the cost is high. .
  • An object of the present invention is to provide an LED lighting device, which aims to solve the problem that the power supply mode of the LED lighting device provided by the prior art is to separately supply power to each LED module, and the circuit design is complicated and the cost is high.
  • an LED lighting device the device comprising:
  • the LED lighting unit having an LED lighting module
  • a constant current source power supply unit connected to one of the plurality of LED lighting units
  • the constant current source power supply unit is configured to supply a constant current to the LED lighting unit connected to the constant current source power supply unit, and the other LED lighting units acquire the constant current from the upper stage, and provide the constant current to the lower
  • the LED lighting unit converts the constant current received by the LED lighting unit into a constant current required for each LED of the corresponding LED lighting module to drive the corresponding LED lighting module to emit light.
  • a plurality of LED lighting units with LED lighting modules are connected in cascade, and are powered by a constant current source connected to one of the LED lighting units, thereby realizing power supply of a plurality of LED lighting units.
  • the step-by-step transmission has the advantages of simple circuit design and low cost compared with the prior art power supply mode of the LED lighting device with multiple LED lighting modules.
  • FIG. 1 is a schematic structural diagram of an LED lighting device according to an embodiment of the present invention.
  • FIG. 2 is a circuit diagram of an LED lighting device according to an embodiment of the present invention.
  • FIG. 3 is an internal circuit diagram of the third LED constant current driving control chip of FIG. 2.
  • a plurality of LED lighting units with LED lighting modules are connected in cascade, and are powered by a constant current source connected to one of the LED lighting units.
  • FIG. 1 shows the structural principle of an LED lighting device provided by an embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
  • the LED lighting device comprises: a plurality of LED lighting units with LED lighting modules connected in cascade, and a constant current source power supply unit 2 connected to one of the plurality of LED lighting units.
  • the constant current source power supply unit 2 is configured to supply a constant current to the LED lighting unit connected to the constant current source power supply unit 2, and the other LED lighting units obtain the constant current from the upper stage, and provide the constant current to the next stage.
  • Each LED lighting unit converts the constant current it receives into a constant current required for each LED of the corresponding LED lighting module to drive the corresponding LED lighting module to emit light.
  • the LED light-emitting device provided by the embodiment of the invention realizes the voltage-order transmission of the power supply of the plurality of LED light-emitting units, and has the circuit design simple and cost compared with the power supply mode of the LED light-emitting device with multiple LED light-emitting modules in the prior art. Low advantage.
  • the LED lighting device provided by the embodiment of the present invention may further include: a dimming control unit 1 connected to one of the plurality of LED lighting units for controlling the brightness of the LED lighting module in each of the LED lighting units.
  • FIG. 1 is an example in which the dimming control unit 1 and the constant current source power supply unit 2 are both connected to the LED lighting unit 3.
  • the dimming control unit 1 is configured to transmit the dimming signal sent by the dimming signal to the LED lighting unit connected to the dimming control unit 1.
  • the other LED lighting unit acquires the dimming signal from the upper stage and transmits the dimming signal to the next level.
  • Each LED lighting unit adjusts the luminous intensity of each LED in the corresponding LED lighting module according to the dimming signal received by the LED lighting unit to drive the corresponding LED lighting module to emit light of a corresponding intensity with the dimming signal.
  • the dimming signal includes at least one set of address bits, and data bits corresponding to the corresponding address bits
  • each of the LED lighting units internally stores address identification information
  • the plurality of LED lighting units respectively store the plurality of addresses.
  • the identification information is different from each other.
  • the LED lighting unit performs automatic addressing according to the dimming signal received by the LED, and compares the address bit in the dimming signal with the stored address identification information to determine an address bit corresponding to the address identification information, thereby obtaining and determining the address.
  • the bit corresponding to the data bit, and according to the data bit adjust the luminous intensity of each LED in the corresponding LED lighting module.
  • the LED lighting device includes three LED lighting units having the same structure.
  • the structure of each LED lighting unit and the cascade connection relationship between them can be referred to this example.
  • the plurality of LED lighting units specifically includes a first LED lighting unit 21, a second LED lighting unit 22, and a third LED lighting unit 23.
  • the first LED lighting unit 21 includes a first LED constant current driving control chip U1, and an LED lighting module composed of the LED D1, the LED D2, and the LED D3.
  • the anode of the light-emitting diode D1, the anode of the light-emitting diode D2, and the anode of the light-emitting diode D3 are connected to the positive terminal of the DC output unit, the cathode of the LED D1, the cathode of the LED D2, and the cathode of the LED D3 are respectively respectively respectively respectively.
  • the three constant current output driving terminals R, G, and B of the LED constant current driving control chip U1 are connected one by one, and the power supply pin VCC of the first LED constant current driving control chip U1 is connected to the positive terminal of the direct current output unit, the first LED
  • the control signal input pin IN of the constant current drive control chip U1 is connected to the dimming control unit 1.
  • the second LED lighting unit 22 includes a second LED constant current driving control chip U2, and an LED lighting module composed of the LED D4, the LED D5 and the LED D6.
  • the anode of the light-emitting diode D4, the anode of the light-emitting diode D5, and the anode of the light-emitting diode D6 are all connected to the ground pin GND of the first LED constant current drive control chip U1, the cathode of the light-emitting diode D1, the cathode of the light-emitting diode D2, and the light-emitting diode
  • the cathode of D3 is respectively connected to the three constant current output driving ends R, G, and B of the second LED constant current driving control chip U2, and the power supply pin VCC of the second LED constant current driving control chip U2 is connected to the first LED.
  • the constant current drive controls the ground pin GND of the chip U1, and the control signal input pin IN of the second LED constant current drive control chip U2 is connected
  • the third LED lighting unit 23 includes a third LED constant current driving control chip U3, and an LED lighting module composed of the LED D7, the LED D8 and the LED D9.
  • the anode of the light-emitting diode D7, the anode of the light-emitting diode D8, and the anode of the light-emitting diode D9 are connected to the ground pin GND of the second LED constant current drive control chip U2, the cathode of the light-emitting diode D7, the cathode of the light-emitting diode D8, and the light-emitting diode
  • the cathodes of the D9 are respectively connected to the three constant current output driving terminals R, G, and B of the third LED constant current driving control chip U3, and the power supply pins VCC of the third LED constant current driving control chip U3 are connected to the second LED.
  • Constant current drive control chip U2 ground pin GND third LED constant current drive control chip U3 control signal input pin IN is connected to the second LED constant current drive control chip U2 control signal output pin OUT, the third LED constant
  • the ground pin GND of the flow drive control chip U3 is connected to the output end of the constant current source power supply unit 2, and the input end of the constant current source power supply unit 2 is connected to the negative terminal of the direct current output unit.
  • the DC output unit can take AC power from the outside through the interface, and rectify and filter the AC power obtained, and then output DC power; it can also take power from the battery and directly output it, or output after filtering.
  • the constant current source power supply unit 2 outputs a constant current to the third LED constant current drive control chip U3, and the third LED constant current drive control chip U3 supplies a constant current to the second LED constant current drive control chip U2 through its power supply pin VCC.
  • the two LED constant current driving control chip U2 supplies a constant current to the first LED constant current driving control chip U1 through its power supply pin VCC.
  • the third LED constant current driving control chip U3 internally outputs a PWM signal having a constant driving current through three constant current output driving terminals R, G, B according to the constant current to drive the light emitting of the three light emitting diodes, the second LED
  • the constant current driving control chip U2 and the first LED constant current driving control chip U1 respectively drive the corresponding LED modules to emit light in the same manner.
  • the dimming control unit 1 sends a dimming signal to the first LED constant current driving control chip U1, and the first LED constant current driving control chip U1 transmits the tuning to the second LED constant current driving control chip U2 through its control signal output pin OUT.
  • the optical signal, the second LED constant current driving control chip U2 transmits the dimming signal to the third LED constant current driving control chip U3 through its control signal output pin OUT.
  • the first LED constant current driving control chip U1 controls the duty ratios of the PWM signals outputted by the three constant current output driving terminals R, G, and B according to the dimming signal to adjust the luminous intensity of the three LEDs, and secondly
  • the LED constant current driving control chip U2 and the third LED constant current driving control chip U3 respectively drive the corresponding LED modules to emit light in the same manner.
  • FIG. 3 shows the internal circuit of the third LED constant current driving control chip U3 of FIG. 2, the internal circuit of the second LED constant current driving control chip U2 and the third LED constant current driving control chip U3 and the first LED constant current driving The internal circuit of the control chip U1 is the same.
  • the third LED constant current driving control chip U3 includes a central logic module 231, a first constant current source A1, a second constant current source A2, a third constant current source A3, a resistor R1, and a first diode formed by a plurality of diodes connected in series.
  • the anode of the first diode group connected in series is connected to the ground pin GND of the second LED constant current driving control chip U2 as the power supply pin VCC of the third LED constant current driving control chip U3, and the first diode group is connected in series.
  • the cathode is connected to the output terminal of the constant current source power supply unit 2 as the ground pin GND of the third LED constant current drive control chip U3; the anode of the second diode group connected in series is used as the third LED constant current drive control chip U3.
  • the control signal input pin IN is connected to the control signal output pin OUT of the second LED constant current drive control chip U2, the cathode of the second diode group is connected to one end of the resistor R1, and the other end of the resistor R1 is used as the third LED constant.
  • the cathode, the three constant current output pins of the central logic module 231 are respectively connected to the input end of the first constant current source A1, the input end of the second constant current source A2 and the input end of the third constant current source A3, the first constant The output of the stream source A1 as the first
  • the constant current output driving end of the LED constant current driving control chip U3 is connected to the cathode of the light emitting diode D7, and the output end of the second constant current source A2 is used as the constant current output driving end of the third LED constant current driving control chip U3 to connect the light emitting diode
  • the cathode of D8 the output end of the third constant current source A3 is connected to the cathode of the light-emitting diode D9 as the constant current output driving end B of the third LED constant current driving control chip U3.
  • a plurality of LED lighting units with LED lighting modules are connected in cascade, and are powered by a constant current source connected to one of the LED lighting units, thereby realizing power supply of a plurality of LED lighting units.
  • the step-by-step transmission has the advantages of simple circuit design and low cost compared with the prior art power supply mode of the LED lighting device with multiple LED lighting modules.
  • the device further includes a dimming control unit connected to one of the LED lighting units to implement adjustment of the light intensity of each LED lighting module, and expands the application field.

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Abstract

An LED light-emitting device is provided, comprising: a plurality of LED light-emitting units (3) cascaded connected, which comprises LED light-emitting modules; and a constant current source power supply unit (2) connecting with one of the plurality of the LED light-emitting units (3); the constant current source power supply unit (2) is used for supplying a constant current for the LED light-emitting unit (3) connected with it, and other LED light-emitting units (3) obtain the constant current from their respective proceeding stages and supply the constant current for their respective following stages; the LED light-emitting units (3) transform the constant current received to the constant current required by every LED for light-emitting in their corresponding LED light-emitting modules to drive their corresponding LED light-emitting modules illuminating. The present invention realizes a cascaded transmission of power supply for a plurality of LED light-emitting units (3) and presents the advantages of simple design of circuit and less cost, comparing with the power supply means in the prior art using an LED light-emitting device with a plurality of LED light-emitting modules.

Description

一种LED发光装置  LED light emitting device 技术领域Technical field
本发明属于LED技术领域，尤其涉及一种LED发光装置。 The invention belongs to the technical field of LEDs, and in particular to an LED lighting device.
背景技术Background technique
LED以其体积小、耗电量低、使用寿命长等特点，被广泛应用于照明及显示技术领域。LEDs are widely used in the field of lighting and display technology due to their small size, low power consumption and long service life.
目前LED的供电方式一般采用恒流驱动或恒压驱动两种。对于其中的恒流驱动方式，一般是为每一单颗LED配置一恒流源，或者是将多颗LED串联后，由一恒流源供电，后者相对于前者的优点是降低了电路设计的复杂度，并且节约了产品的成本。At present, the power supply mode of the LED generally adopts two types of constant current driving or constant voltage driving. For the constant current driving mode, a constant current source is generally configured for each single LED, or a plurality of LEDs are connected in series, and is supplied by a constant current source, and the latter has the advantage of lowering the circuit design than the former. The complexity and cost savings of the product.
然而，现有技术提供的各种LED发光装置，如LED显示屏、各种LED灯具等，往往是由多个LED模组构成，每一LED模组是由多颗LED构成，而为了实现LED发光装置的不同显示功能，往往需要多个LED模组的发光亮度不同，因此，上述的恒流驱动供电方式不适用于LED发光装置中LED模组的供电， 现有技术提供的LED发光装置目前采用的供电方式是向每一LED模组单独供电，参照上述的LED供电方式可知，此种LED发光装置目前采用的供电方式的电路设计复杂，且成本较高。However, various LED lighting devices provided by the prior art, such as LED display screens, various LED lamps, etc., are often composed of a plurality of LED modules, each LED module is composed of a plurality of LEDs, and in order to realize LED The different display functions of the illuminating device often require different illuminating brightness of the plurality of LED modules. Therefore, the above-mentioned constant current driving power supply mode is not suitable for the power supply of the LED module in the LED illuminating device. The LED power supply device provided by the prior art currently adopts a power supply mode for separately supplying power to each LED module. Referring to the above-mentioned LED power supply mode, the circuit design of the power supply mode currently used by the LED light-emitting device is complicated, and the cost is high. .
技术问题technical problem
本发明实施例的目的在于提供一种LED发光装置，旨在解决现有技术提供的LED发光装置采用的供电方式是向每一LED模组单独供电，电路设计复杂、成本较高的问题。 An object of the present invention is to provide an LED lighting device, which aims to solve the problem that the power supply mode of the LED lighting device provided by the prior art is to separately supply power to each LED module, and the circuit design is complicated and the cost is high.
技术解决方案Technical solution
本发明实施例是这样实现的，一种LED发光装置，所述装置包括：The embodiment of the invention is implemented as follows, an LED lighting device, the device comprising:
级联连接的多个LED发光单元，所述LED发光单元带有LED发光模组；以及a plurality of LED lighting units connected in cascade, the LED lighting unit having an LED lighting module;
与所述多个LED发光单元中的一个LED发光单元连接的恒流源供电单元；a constant current source power supply unit connected to one of the plurality of LED lighting units;
所述恒流源供电单元用于提供恒定电流给与所述恒流源供电单元连接的LED发光单元，其它LED发光单元从上一级获取所述恒定电流，并将所述恒定电流提供给下一级；所述LED发光单元将其接收到的所述恒定电流转换为相应的LED发光模组中每一LED发光所需的恒定电流，以驱动所述相应的LED发光模组发光。The constant current source power supply unit is configured to supply a constant current to the LED lighting unit connected to the constant current source power supply unit, and the other LED lighting units acquire the constant current from the upper stage, and provide the constant current to the lower The LED lighting unit converts the constant current received by the LED lighting unit into a constant current required for each LED of the corresponding LED lighting module to drive the corresponding LED lighting module to emit light.
有益效果Beneficial effect
本发明实施例提供的LED发光装置中，多个带有LED发光模组的LED发光单元级联连接，并由与其中一个LED发光单元连接的恒流源供电，实现了多个LED发光单元供电的压阶传输，相较于现有技术带有多个LED发光模组的LED发光装置的供电方式，具有电路设计简单、成本低的优点。 In the LED lighting device provided by the embodiment of the invention, a plurality of LED lighting units with LED lighting modules are connected in cascade, and are powered by a constant current source connected to one of the LED lighting units, thereby realizing power supply of a plurality of LED lighting units. The step-by-step transmission has the advantages of simple circuit design and low cost compared with the prior art power supply mode of the LED lighting device with multiple LED lighting modules.
附图说明DRAWINGS
图1是本发明实施例提供的LED发光装置的结构原理图；1 is a schematic structural diagram of an LED lighting device according to an embodiment of the present invention;
图2是本发明实施例提供的LED发光装置的一种电路图；2 is a circuit diagram of an LED lighting device according to an embodiment of the present invention;
图3是图2中第三LED恒流驱动控制芯片的内部电路图。3 is an internal circuit diagram of the third LED constant current driving control chip of FIG. 2.
本发明的实施方式Embodiments of the invention
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
本发明实施例提供的LED发光装置中，多个带有LED发光模组的LED发光单元级联连接，并由与其中一个LED发光单元连接的恒流源供电。In the LED lighting device provided by the embodiment of the invention, a plurality of LED lighting units with LED lighting modules are connected in cascade, and are powered by a constant current source connected to one of the LED lighting units.
图1示出了本发明实施例提供的LED发光装置的结构原理，为了便于说明，仅示出了与本发明实施例相关的部分。FIG. 1 shows the structural principle of an LED lighting device provided by an embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
本发明实施例提供的LED发光装置包括：级联连接的多个带有LED发光模组的LED发光单元、以及与多个LED发光单元中的一个LED发光单元连接的恒流源供电单元2。其中，恒流源供电单元2用于提供恒定电流给与恒流源供电单元2连接的LED发光单元，其它LED发光单元从上一级获取该恒定电流，并将该恒定电流提供给下一级。每一LED发光单元将其接收到的恒定电流转换为相应的LED发光模组中每一LED发光所需的恒定电流，以驱动相应的LED发光模组发光。The LED lighting device provided by the embodiment of the invention comprises: a plurality of LED lighting units with LED lighting modules connected in cascade, and a constant current source power supply unit 2 connected to one of the plurality of LED lighting units. The constant current source power supply unit 2 is configured to supply a constant current to the LED lighting unit connected to the constant current source power supply unit 2, and the other LED lighting units obtain the constant current from the upper stage, and provide the constant current to the next stage. . Each LED lighting unit converts the constant current it receives into a constant current required for each LED of the corresponding LED lighting module to drive the corresponding LED lighting module to emit light.
本发明实施例提供的LED发光装置实现了多个LED发光单元供电的压阶传输，相较于现有技术带有多个LED发光模组的LED发光装置的供电方式，具有电路设计简单、成本低的优点。The LED light-emitting device provided by the embodiment of the invention realizes the voltage-order transmission of the power supply of the plurality of LED light-emitting units, and has the circuit design simple and cost compared with the power supply mode of the LED light-emitting device with multiple LED light-emitting modules in the prior art. Low advantage.
为了实现对每一LED发光单元中LED发光模组的发光亮度控制，本发明实施例提供的LED发光装置还可以包括：与多个LED发光单元中的一个LED发光单元连接的调光控制单元1，图1以调光控制单元1和恒流源供电单元2均与LED发光单元3连接为例。调光控制单元1用于将其发出的调光信号传送给与调光控制单元1连接的LED发光单元，其它LED发光单元从上一级获取该调光信号，并将该调光信号传送给下一级。每一LED发光单元根据其接收到的调光信号对相应的LED发光模组中的每一LED的发光强度进行调节，以驱动相应的LED发光模组发出与调光信号相应强度的光。The LED lighting device provided by the embodiment of the present invention may further include: a dimming control unit 1 connected to one of the plurality of LED lighting units for controlling the brightness of the LED lighting module in each of the LED lighting units. FIG. 1 is an example in which the dimming control unit 1 and the constant current source power supply unit 2 are both connected to the LED lighting unit 3. The dimming control unit 1 is configured to transmit the dimming signal sent by the dimming signal to the LED lighting unit connected to the dimming control unit 1. The other LED lighting unit acquires the dimming signal from the upper stage and transmits the dimming signal to the next level. Each LED lighting unit adjusts the luminous intensity of each LED in the corresponding LED lighting module according to the dimming signal received by the LED lighting unit to drive the corresponding LED lighting module to emit light of a corresponding intensity with the dimming signal.
具体地，其中的调光信号包括至少一组地址位，以及与相应地址位对应的数据位，每一LED发光单元内部均存储有地址标识信息，且多个LED发光单元分别存储的多个地址标识信息互不相同。LED发光单元根据其接收到的调光信号进行自动寻址，将调光信号中的地址位与其存储的地址标识信息进行比较，以确定与地址标识信息相应的地址位，进而获取与确定的地址位对应的数据位，并根据数据位对相应的LED发光模组中每一LED的发光强度进行调节。Specifically, the dimming signal includes at least one set of address bits, and data bits corresponding to the corresponding address bits, each of the LED lighting units internally stores address identification information, and the plurality of LED lighting units respectively store the plurality of addresses. The identification information is different from each other. The LED lighting unit performs automatic addressing according to the dimming signal received by the LED, and compares the address bit in the dimming signal with the stored address identification information to determine an address bit corresponding to the address identification information, thereby obtaining and determining the address. The bit corresponding to the data bit, and according to the data bit, adjust the luminous intensity of each LED in the corresponding LED lighting module.
图2示出了本发明实施例提供的LED发光装置的一种电路，由于各LED发光单元的结构均相同，为了便于说明，图中以该LED发光装置包括三个结构相同的LED发光单元为例进行说明，对于带有三个以上LED发光单元的LED发光装置，其各LED发光单元的结构及相互之间的级联连接关系可参考此例。2 shows a circuit of an LED lighting device according to an embodiment of the present invention. Since the structures of the LED lighting units are the same, for convenience of description, the LED lighting device includes three LED lighting units having the same structure. For example, for the LED lighting device with three or more LED lighting units, the structure of each LED lighting unit and the cascade connection relationship between them can be referred to this example.
其中，多个LED发光单元具体包括第一LED发光单元21、第二LED发光单元22、以及第三LED发光单元23。The plurality of LED lighting units specifically includes a first LED lighting unit 21, a second LED lighting unit 22, and a third LED lighting unit 23.
第一LED发光单元21包括第一LED恒流驱动控制芯片U1，以及由发光二极管D1、发光二极管D2和发光二极管D3构成的LED发光模组。发光二极管D1的阳极、发光二极管D2的阳极、以及发光二极管D3的阳极均连接一直流电输出单元的正极端，发光二极管D1的阴极、发光二极管D2的阴极、以及发光二极管D3的阴极分别与第一LED恒流驱动控制芯片U1的三个恒流输出驱动端R、G、B一一对应连接，第一LED恒流驱动控制芯片U1的供电引脚VCC连接直流电输出单元的正极端，第一LED恒流驱动控制芯片U1的控制信号输入引脚IN连接调光控制单元1。The first LED lighting unit 21 includes a first LED constant current driving control chip U1, and an LED lighting module composed of the LED D1, the LED D2, and the LED D3. The anode of the light-emitting diode D1, the anode of the light-emitting diode D2, and the anode of the light-emitting diode D3 are connected to the positive terminal of the DC output unit, the cathode of the LED D1, the cathode of the LED D2, and the cathode of the LED D3 are respectively respectively The three constant current output driving terminals R, G, and B of the LED constant current driving control chip U1 are connected one by one, and the power supply pin VCC of the first LED constant current driving control chip U1 is connected to the positive terminal of the direct current output unit, the first LED The control signal input pin IN of the constant current drive control chip U1 is connected to the dimming control unit 1.
第二LED发光单元22包括第二LED恒流驱动控制芯片U2，以及由发光二极管D4、发光二极管D5和发光二极管D6构成的LED发光模组。发光二极管D4的阳极、发光二极管D5的阳极、以及发光二极管D6的阳极均连接第一LED恒流驱动控制芯片U1的接地引脚GND，发光二极管D1的阴极、发光二极管D2的阴极、以及发光二极管D3的阴极分别与第二LED恒流驱动控制芯片U2的三个恒流输出驱动端R、G、B一一对应连接，第二LED恒流驱动控制芯片U2的供电引脚VCC连接第一LED恒流驱动控制芯片U1的接地引脚GND，第二LED恒流驱动控制芯片U2的控制信号输入引脚IN连接第一LED恒流驱动控制芯片U1的控制信号输出引脚OUT。The second LED lighting unit 22 includes a second LED constant current driving control chip U2, and an LED lighting module composed of the LED D4, the LED D5 and the LED D6. The anode of the light-emitting diode D4, the anode of the light-emitting diode D5, and the anode of the light-emitting diode D6 are all connected to the ground pin GND of the first LED constant current drive control chip U1, the cathode of the light-emitting diode D1, the cathode of the light-emitting diode D2, and the light-emitting diode The cathode of D3 is respectively connected to the three constant current output driving ends R, G, and B of the second LED constant current driving control chip U2, and the power supply pin VCC of the second LED constant current driving control chip U2 is connected to the first LED. The constant current drive controls the ground pin GND of the chip U1, and the control signal input pin IN of the second LED constant current drive control chip U2 is connected to the control signal output pin OUT of the first LED constant current drive control chip U1.
第三LED发光单元23包括第三LED恒流驱动控制芯片U3，以及由发光二极管D7、发光二极管D8和发光二极管D9构成的LED发光模组。发光二极管D7的阳极、发光二极管D8的阳极、以及发光二极管D9的阳极均连接第二LED恒流驱动控制芯片U2的接地引脚GND，发光二极管D7的阴极、发光二极管D8的阴极、以及发光二极管D9的阴极分别与第三LED恒流驱动控制芯片U3的三个恒流输出驱动端R、G、B一一对应连接，第三LED恒流驱动控制芯片U3的供电引脚VCC连接第二LED恒流驱动控制芯片U2的接地引脚GND，第三LED恒流驱动控制芯片U3的控制信号输入引脚IN连接第二LED恒流驱动控制芯片U2的控制信号输出引脚OUT，第三LED恒流驱动控制芯片U3的接地引脚GND连接恒流源供电单元2的输出端，恒流源供电单元2的输入端连接直流电输出单元的负极端。The third LED lighting unit 23 includes a third LED constant current driving control chip U3, and an LED lighting module composed of the LED D7, the LED D8 and the LED D9. The anode of the light-emitting diode D7, the anode of the light-emitting diode D8, and the anode of the light-emitting diode D9 are connected to the ground pin GND of the second LED constant current drive control chip U2, the cathode of the light-emitting diode D7, the cathode of the light-emitting diode D8, and the light-emitting diode The cathodes of the D9 are respectively connected to the three constant current output driving terminals R, G, and B of the third LED constant current driving control chip U3, and the power supply pins VCC of the third LED constant current driving control chip U3 are connected to the second LED. Constant current drive control chip U2 ground pin GND, third LED constant current drive control chip U3 control signal input pin IN is connected to the second LED constant current drive control chip U2 control signal output pin OUT, the third LED constant The ground pin GND of the flow drive control chip U3 is connected to the output end of the constant current source power supply unit 2, and the input end of the constant current source power supply unit 2 is connected to the negative terminal of the direct current output unit.
此电路在工作时，直流电输出单元可以通过接口从外部取交流电，并对取到的交流电进行整流及滤波处理后，输出直流电；还可以从电池取电并直接输出，或者经滤波处理后输出。恒流源供电单元2向第三LED恒流驱动控制芯片U3输出恒定电流，第三LED恒流驱动控制芯片U3通过其供电引脚VCC向第二LED恒流驱动控制芯片U2提供恒定电流，第二LED恒流驱动控制芯片U2通过其供电引脚VCC向第一LED恒流驱动控制芯片U1提供恒定电流。第三LED恒流驱动控制芯片U3在内部根据该恒定电流分别通过三个恒流输出驱动端R、G、B输出具有恒定驱动电流的PWM信号，以驱动三个发光二极管的发光，第二LED恒流驱动控制芯片U2以及第一LED恒流驱动控制芯片U1分别以同样的方式驱动相应的LED模组发光。When the circuit is in operation, the DC output unit can take AC power from the outside through the interface, and rectify and filter the AC power obtained, and then output DC power; it can also take power from the battery and directly output it, or output after filtering. The constant current source power supply unit 2 outputs a constant current to the third LED constant current drive control chip U3, and the third LED constant current drive control chip U3 supplies a constant current to the second LED constant current drive control chip U2 through its power supply pin VCC. The two LED constant current driving control chip U2 supplies a constant current to the first LED constant current driving control chip U1 through its power supply pin VCC. The third LED constant current driving control chip U3 internally outputs a PWM signal having a constant driving current through three constant current output driving terminals R, G, B according to the constant current to drive the light emitting of the three light emitting diodes, the second LED The constant current driving control chip U2 and the first LED constant current driving control chip U1 respectively drive the corresponding LED modules to emit light in the same manner.
调光控制单元1向第一LED恒流驱动控制芯片U1发出调光信号，第一LED恒流驱动控制芯片U1通过其控制信号输出引脚OUT向第二LED恒流驱动控制芯片U2传送该调光信号，第二LED恒流驱动控制芯片U2通过其控制信号输出引脚OUT向第三LED恒流驱动控制芯片U3传送该调光信号。第一LED恒流驱动控制芯片U1根据该调光信号，控制其三个恒流输出驱动端R、G、B输出的PWM信号的占空比，以调节三个发光二极管的发光强度，第二LED恒流驱动控制芯片U2以及第三LED恒流驱动控制芯片U3分别以同样的方式驱动相应的LED模组发光。The dimming control unit 1 sends a dimming signal to the first LED constant current driving control chip U1, and the first LED constant current driving control chip U1 transmits the tuning to the second LED constant current driving control chip U2 through its control signal output pin OUT. The optical signal, the second LED constant current driving control chip U2 transmits the dimming signal to the third LED constant current driving control chip U3 through its control signal output pin OUT. The first LED constant current driving control chip U1 controls the duty ratios of the PWM signals outputted by the three constant current output driving terminals R, G, and B according to the dimming signal to adjust the luminous intensity of the three LEDs, and secondly The LED constant current driving control chip U2 and the third LED constant current driving control chip U3 respectively drive the corresponding LED modules to emit light in the same manner.
图3示出了图2中第三LED恒流驱动控制芯片U3的内部电路，第二LED恒流驱动控制芯片U2以及第三LED恒流驱动控制芯片U3的内部电路与第一LED恒流驱动控制芯片U1的内部电路相同。3 shows the internal circuit of the third LED constant current driving control chip U3 of FIG. 2, the internal circuit of the second LED constant current driving control chip U2 and the third LED constant current driving control chip U3 and the first LED constant current driving The internal circuit of the control chip U1 is the same.
第三LED恒流驱动控制芯片U3包括中央逻辑模块231、第一恒流源A1、第二恒流源A2、第三恒流源A3、电阻R1、由多个二极管串联构成的第一二极管组以及由多个二极管串联构成的第二二极管组。其中，第一二极管组串联后的阳极作为第三LED恒流驱动控制芯片U3的供电引脚VCC连接第二LED恒流驱动控制芯片U2的接地引脚GND，第一二极管组串联后的阴极作为第三LED恒流驱动控制芯片U3的接地引脚GND连接恒流源供电单元2的输出端；第二二极管组串联后的阳极作为第三LED恒流驱动控制芯片U3的控制信号输入引脚IN连接第二LED恒流驱动控制芯片U2的控制信号输出引脚OUT，第二二极管组串联后的阴极连接电阻R1的一端，电阻R1的另一端作为第三LED恒流驱动控制芯片U3的控制信号输出引脚OUT；中央逻辑模块231的正极引脚连接第二二极管组串联后的阳极，中央逻辑模块231的正极引脚连接第一二极管组串联后的阴极，中央逻辑模块231的三个恒流输出引脚分别连接第一恒流源A1的输入端，第二恒流源A2的输入端以及第三恒流源A3的输入端，第一恒流源A1的输出端作为第三LED恒流驱动控制芯片U3的恒流输出驱动端R连接发光二极管D7的阴极，第二恒流源A2的输出端作为第三LED恒流驱动控制芯片U3的恒流输出驱动端G连接发光二极管D8的阴极，第三恒流源A3的输出端作为第三LED恒流驱动控制芯片U3的恒流输出驱动端B连接发光二极管D9的阴极。The third LED constant current driving control chip U3 includes a central logic module 231, a first constant current source A1, a second constant current source A2, a third constant current source A3, a resistor R1, and a first diode formed by a plurality of diodes connected in series. A tube group and a second diode group consisting of a plurality of diodes connected in series. The anode of the first diode group connected in series is connected to the ground pin GND of the second LED constant current driving control chip U2 as the power supply pin VCC of the third LED constant current driving control chip U3, and the first diode group is connected in series. The cathode is connected to the output terminal of the constant current source power supply unit 2 as the ground pin GND of the third LED constant current drive control chip U3; the anode of the second diode group connected in series is used as the third LED constant current drive control chip U3. The control signal input pin IN is connected to the control signal output pin OUT of the second LED constant current drive control chip U2, the cathode of the second diode group is connected to one end of the resistor R1, and the other end of the resistor R1 is used as the third LED constant. The control signal output pin OUT of the flow drive control chip U3; the positive pin of the central logic module 231 is connected to the anode of the second diode group connected in series, and the positive pin of the central logic module 231 is connected to the first diode group in series. The cathode, the three constant current output pins of the central logic module 231 are respectively connected to the input end of the first constant current source A1, the input end of the second constant current source A2 and the input end of the third constant current source A3, the first constant The output of the stream source A1 as the first The constant current output driving end of the LED constant current driving control chip U3 is connected to the cathode of the light emitting diode D7, and the output end of the second constant current source A2 is used as the constant current output driving end of the third LED constant current driving control chip U3 to connect the light emitting diode The cathode of D8, the output end of the third constant current source A3 is connected to the cathode of the light-emitting diode D9 as the constant current output driving end B of the third LED constant current driving control chip U3.
本发明实施例提供的LED发光装置中，多个带有LED发光模组的LED发光单元级联连接，并由与其中一个LED发光单元连接的恒流源供电，实现了多个LED发光单元供电的压阶传输，相较于现有技术带有多个LED发光模组的LED发光装置的供电方式，具有电路设计简单、成本低的优点。另外，该装置还包括与其中一个LED发光单元连接的调光控制单元，以实现对每一LED发光模组的光强的调节，拓展了应用领域。In the LED lighting device provided by the embodiment of the invention, a plurality of LED lighting units with LED lighting modules are connected in cascade, and are powered by a constant current source connected to one of the LED lighting units, thereby realizing power supply of a plurality of LED lighting units. The step-by-step transmission has the advantages of simple circuit design and low cost compared with the prior art power supply mode of the LED lighting device with multiple LED lighting modules. In addition, the device further includes a dimming control unit connected to one of the LED lighting units to implement adjustment of the light intensity of each LED lighting module, and expands the application field.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims (8)

  1. 一种LED发光装置，其特征在于，所述装置包括：An LED lighting device, characterized in that the device comprises:
    级联连接的多个LED发光单元，所述LED发光单元带有LED发光模组；以及a plurality of LED lighting units connected in cascade, the LED lighting unit having an LED lighting module;
    与所述多个LED发光单元中的一个LED发光单元连接的恒流源供电单元；a constant current source power supply unit connected to one of the plurality of LED lighting units;
    所述恒流源供电单元用于提供恒定电流给与所述恒流源供电单元连接的LED发光单元，其它LED发光单元从上一级获取所述恒定电流，并将所述恒定电流提供给下一级；所述LED发光单元将其接收到的所述恒定电流转换为相应的LED发光模组中每一LED发光所需的恒定电流，以驱动所述相应的LED发光模组发光。The constant current source power supply unit is configured to supply a constant current to the LED lighting unit connected to the constant current source power supply unit, and the other LED lighting units acquire the constant current from the upper stage, and provide the constant current to the lower The LED lighting unit converts the constant current received by the LED lighting unit into a constant current required for each LED of the corresponding LED lighting module to drive the corresponding LED lighting module to emit light.
  2. 如权利要求1所述的LED发光装置，其特征在于，所述LED发光装置还包括：与所述多个LED发光单元中的一个LED发光单元连接的调光控制单元；The LED lighting device of claim 1 , wherein the LED lighting device further comprises: a dimming control unit connected to one of the plurality of LED lighting units;
    所述调光控制单元用于将其发出的调光信号传送给与所述调光控制单元连接的LED发光单元，其它LED发光单元从上一级获取该调光信号，并将所述调光信号传送给下一级；所述LED发光单元根据其接收到的所述调光信号对相应的LED发光模组中的每一LED的发光强度进行调节，以驱动所述相应的LED发光模组发出与所述调光信号相应强度的光。The dimming control unit is configured to transmit the dimming signal sent by the dimming signal to the LED lighting unit connected to the dimming control unit, and the other LED lighting units acquire the dimming signal from the upper stage, and divert the dimming signal Transmitting the signal to the next stage; the LED lighting unit adjusts the luminous intensity of each LED in the corresponding LED lighting module according to the dimming signal received by the LED lighting unit to drive the corresponding LED lighting module Light of a corresponding intensity to the dimming signal is emitted.
  3. 如权利要求2所述的LED发光装置，其特征在于，所述调光信号包括至少一组地址位，以及与相应地址位对应的数据位，所述LED发光单元内部存储有地址标识信息，且所述多个LED发光单元分别存储的多个地址标识信息互不相同；The LED lighting device of claim 2, wherein the dimming signal comprises at least one set of address bits and data bits corresponding to respective address bits, and the LED lighting unit internally stores address identification information, and The plurality of address identification information respectively stored by the plurality of LED lighting units are different from each other;
    所述LED发光单元根据其接收到的所述调光信号进行自动寻址，将所述调光信号中的地址位与其存储的地址标识信息进行比较，以确定与地址标识信息相应的地址位，进而获取与确定的地址位对应的数据位，并根据所述数据位对相应的LED发光模组中每一LED的发光强度进行调节。The LED lighting unit performs automatic addressing according to the dimming signal received by the LED lighting unit, and compares the address bit in the dimming signal with the stored address identification information to determine an address bit corresponding to the address identification information. Further, data bits corresponding to the determined address bits are obtained, and the illumination intensity of each LED in the corresponding LED lighting module is adjusted according to the data bits.
  4. 如权利要求3所述的LED发光装置，其特征在于，所述多个LED发光单元包括第一LED发光单元、第二LED发光单元、以及第三LED发光单元；The LED lighting device of claim 3, wherein the plurality of LED lighting units comprise a first LED lighting unit, a second LED lighting unit, and a third LED lighting unit;
    所述第一LED发光单包括第一LED恒流驱动控制芯片，以及由发光二极管D1、发光二极管D2和发光二极管D3构成的LED发光模组；发光二极管D1的阳极、发光二极管D2的阳极、以及发光二极管D3的阳极均连接一直流电输出单元的正极端，发光二极管D1的阴极、发光二极管D2的阴极、以及发光二极管D3的阴极分别与所述第一LED恒流驱动控制芯片的三个恒流输出驱动端一一对应连接，所述第一LED恒流驱动控制芯片的供电引脚连接所述直流电输出单元的正极端，所述第一LED恒流驱动控制芯片的控制信号输入引脚连接所述调光控制单元。The first LED light emitting unit includes a first LED constant current driving control chip, and an LED lighting module composed of the light emitting diode D1, the light emitting diode D2 and the light emitting diode D3; an anode of the light emitting diode D1, an anode of the light emitting diode D2, and The anode of the light-emitting diode D3 is connected to the positive end of the DC output unit, the cathode of the LED D1, the cathode of the LED D2, and the cathode of the LED D3 and the three constant currents of the first LED constant current driving control chip, respectively. The output driving terminals are connected in one-to-one correspondence, the power supply pin of the first LED constant current driving control chip is connected to the positive terminal of the DC output unit, and the control signal input pin connection of the first LED constant current driving control chip is The dimming control unit.
  5. 如权利要求4所述的LED发光装置，其特征在于，所述第二LED发光单元包括第二LED恒流驱动控制芯片，以及由发光二极管D4、发光二极管D5和发光二极管D6构成的LED发光模组；发光二极管D4的阳极、发光二极管D5的阳极、以及发光二极管D6的阳极均连接所述第一LED恒流驱动控制芯片的接地引脚，发光二极管D1的阴极、发光二极管D2的阴极、以及发光二极管D3的阴极分别与所述第二LED恒流驱动控制芯片的三个恒流输出驱动端一一对应连接，所述第二LED恒流驱动控制芯片的供电引脚连接所述第一LED恒流驱动控制芯片的接地引脚，所述第二LED恒流驱动控制芯片的控制信号输入引脚连接所述第一LED恒流驱动控制芯片的控制信号输出引脚。The LED lighting device of claim 4, wherein the second LED lighting unit comprises a second LED constant current driving control chip, and an LED lighting module comprising a light emitting diode D4, a light emitting diode D5 and a light emitting diode D6. The anode of the light-emitting diode D4, the anode of the light-emitting diode D5, and the anode of the light-emitting diode D6 are all connected to the grounding pin of the first LED constant current driving control chip, the cathode of the light-emitting diode D1, the cathode of the light-emitting diode D2, and The cathodes of the LEDs D3 are respectively connected to the three constant current output driving ends of the second LED constant current driving control chip, and the power supply pins of the second LED constant current driving control chip are connected to the first LEDs. The constant current drives the ground pin of the control chip, and the control signal input pin of the second LED constant current drive control chip is connected to the control signal output pin of the first LED constant current drive control chip.
  6. 如权利要求5所述的LED发光装置，其特征在于，所述第三LED发光单元包括第三LED恒流驱动控制芯片，以及由发光二极管D7、发光二极管D8和发光二极管D9构成的LED发光模组；发光二极管D7的阳极、发光二极管D8的阳极、以及发光二极管D9的阳极均连接所述第二LED恒流驱动控制芯片的接地引脚，发光二极管D7的阴极、发光二极管D8的阴极、以及发光二极管D9的阴极分别与所述第三LED恒流驱动控制芯片的三个恒流输出驱动端一一对应连接，所述第三LED恒流驱动控制芯片的供电引脚连接所述第二LED恒流驱动控制芯片的接地引脚，所述第三LED恒流驱动控制芯片的控制信号输入引脚连接所述第二LED恒流驱动控制芯片的控制信号输出引脚，所述第三LED恒流驱动控制芯片的接地引脚连接所述恒流源供电单元的输出端，所述恒流源供电单元的输入端连接所述直流电输出单元的负极端。The LED lighting device of claim 5, wherein the third LED lighting unit comprises a third LED constant current driving control chip, and an LED lighting module comprising a light emitting diode D7, a light emitting diode D8 and a light emitting diode D9. The anode of the light-emitting diode D7, the anode of the light-emitting diode D8, and the anode of the light-emitting diode D9 are connected to the ground pin of the second LED constant current drive control chip, the cathode of the light-emitting diode D7, the cathode of the light-emitting diode D8, and The cathodes of the LEDs D9 are respectively connected to the three constant current output driving ends of the third LED constant current driving control chip, and the power supply pins of the third LED constant current driving control chip are connected to the second LEDs. a constant current driving control chip grounding pin, a control signal input pin of the third LED constant current driving control chip is connected to a control signal output pin of the second LED constant current driving control chip, the third LED is constant a ground pin of the flow drive control chip is connected to an output end of the constant current source power supply unit, and an input end of the constant current source power supply unit is connected to the DC output unit The negative end.
  7. 如权利要求6所述的LED发光装置，其特征在于，所述第三LED恒流驱动控制芯片包括中央逻辑模块、第一恒流源、第二恒流源、第三恒流源、电阻R1、由多个二极管串联构成的第一二极管组以及由多个二极管串联构成的第二二极管组；所述第一二极管组串联后的阳极作为所述第三LED恒流驱动控制芯片的供电引脚连接所述第二LED恒流驱动控制芯片的接地引脚，所述第一二极管组串联后的阴极作为所述第三LED恒流驱动控制芯片的接地引脚连接所述恒流源供电单元的输出端；所述第二二极管组串联后的阳极作为所述第三LED恒流驱动控制芯片的控制信号输入引脚连接所述第二LED恒流驱动控制芯片的控制信号输出引脚，所述第二二极管组串联后的阴极连接电阻R1的一端，电阻R1的另一端作为所述第三LED恒流驱动控制芯片的控制信号输出引脚；所述中央逻辑模块的正极引脚连接所述第二二极管组串联后的阳极，所述中央逻辑模块的正极引脚连接所述第一二极管组串联后的阴极，所述中央逻辑模块的三个恒流输出引脚分别连接所述第一恒流源的输入端，第二恒流源的输入端以及第三恒流源的输入端，所述第一恒流源的输出端作为所述第三LED恒流驱动控制芯片的恒流输出驱动端连接发光二极管D7的阴极，所述第二恒流源的输出端作为所述第三LED恒流驱动控制芯片的恒流输出驱动端连接发光二极管D8的阴极，所述第三恒流源的输出端作为所述第三LED恒流驱动控制芯片的恒流输出驱动端连接发光二极管D9的阴极。The LED lighting device of claim 6, wherein the third LED constant current driving control chip comprises a central logic module, a first constant current source, a second constant current source, a third constant current source, and a resistor R1. a first diode group consisting of a plurality of diodes connected in series and a second diode group consisting of a plurality of diodes connected in series; the anode of the first diode group connected in series as the third LED constant current driving a power supply pin of the control chip is connected to a ground pin of the second LED constant current drive control chip, and a cathode of the first diode group connected in series is connected as a ground pin of the third LED constant current drive control chip An output end of the constant current source power supply unit; an anode connected in series with the second diode group as a control signal input pin of the third LED constant current drive control chip is connected to the second LED constant current drive control a control signal output pin of the chip, a cathode of the second diode group connected in series is connected to one end of the resistor R1, and the other end of the resistor R1 is used as a control signal output pin of the third LED constant current driving control chip; Positive of the central logic module a pole pin is connected to the anode of the second diode group connected in series, a positive pole of the central logic module is connected to a cathode of the first diode group connected in series, and three constant currents of the central logic module The output pins are respectively connected to the input end of the first constant current source, the input end of the second constant current source, and the input end of the third constant current source, and the output end of the first constant current source serves as the third LED The constant current output driving end of the constant current driving control chip is connected to the cathode of the light emitting diode D7, and the output end of the second constant current source is connected to the light emitting diode D8 as the constant current output driving end of the third LED constant current driving control chip. The cathode, the output end of the third constant current source is connected to the cathode of the light-emitting diode D9 as a constant current output driving end of the third LED constant current driving control chip.
  8. 如权利要求1至7任一项所述的LED发光装置，其特征在于，所述LED发光装置是LED显示屏。The LED lighting device according to any one of claims 1 to 7, wherein the LED lighting device is an LED display.
PCT/CN2011/072781 2011-04-14 2011-04-14 Led light-emitting device WO2012139293A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107620908A (en) * 2017-08-28 2018-01-23 欧普照明股份有限公司 High voltage and constant current chip and constant-current supply
CN108488642A (en) * 2018-05-25 2018-09-04 深圳市明微电子股份有限公司 A kind of light emitting diode illuminating apparatus and light emitting diode
CN114863867A (en) * 2022-03-27 2022-08-05 深圳市美矽微半导体有限公司 Hard screen and display device thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005167406A (en) * 2003-11-28 2005-06-23 Mikami:Kk Led illuminator for television camera
WO2010055456A1 (en) * 2008-11-13 2010-05-20 Koninklijke Philips Electronics N.V. Lighting system with a plurality of leds
CN101783116A (en) * 2010-03-01 2010-07-21 友达光电股份有限公司 LED drive device used in liquid crystal display backlight module
CN102141202A (en) * 2010-01-29 2011-08-03 深圳市长运通集成电路设计有限公司 LED light emitting device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005167406A (en) * 2003-11-28 2005-06-23 Mikami:Kk Led illuminator for television camera
WO2010055456A1 (en) * 2008-11-13 2010-05-20 Koninklijke Philips Electronics N.V. Lighting system with a plurality of leds
CN102141202A (en) * 2010-01-29 2011-08-03 深圳市长运通集成电路设计有限公司 LED light emitting device
CN101783116A (en) * 2010-03-01 2010-07-21 友达光电股份有限公司 LED drive device used in liquid crystal display backlight module

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107620908A (en) * 2017-08-28 2018-01-23 欧普照明股份有限公司 High voltage and constant current chip and constant-current supply
CN107620908B (en) * 2017-08-28 2023-11-21 欧普照明股份有限公司 High-voltage constant-current chip and constant-current power supply
CN108488642A (en) * 2018-05-25 2018-09-04 深圳市明微电子股份有限公司 A kind of light emitting diode illuminating apparatus and light emitting diode
CN114863867A (en) * 2022-03-27 2022-08-05 深圳市美矽微半导体有限公司 Hard screen and display device thereof

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