WO2015021706A1 - 调光电路及可调光照明设备 - Google Patents

调光电路及可调光照明设备 Download PDF

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Publication number
WO2015021706A1
WO2015021706A1 PCT/CN2013/087764 CN2013087764W WO2015021706A1 WO 2015021706 A1 WO2015021706 A1 WO 2015021706A1 CN 2013087764 W CN2013087764 W CN 2013087764W WO 2015021706 A1 WO2015021706 A1 WO 2015021706A1
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Prior art keywords
resistor
dimming
unit
inductor
capacitor
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PCT/CN2013/087764
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English (en)
French (fr)
Inventor
胡强龙
苏浩
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京东方科技集团股份有限公司
北京京东方茶谷电子有限公司
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Publication of WO2015021706A1 publication Critical patent/WO2015021706A1/zh

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10Controlling the intensity of the light
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30Driver circuits
    • H05B45/37Converter circuits
    • H05B45/3725Switched mode power supply [SMPS]

Definitions

  • the present invention relates to the field of lighting technologies, and in particular, to a dimming circuit and a dimmable lighting device. Background technique
  • LED Light Emitted Diode
  • traditional light-emitting devices such as incandescent lamps, CCFLs (Cold Cathode Fluorescent Lamps), etc.
  • LED light sources can save energy, highlight, and have no infrared or ultraviolet radiation. Adapt to current people's requirements for green, energy saving and environmental protection.
  • Embodiments of the present invention provide a dimming circuit and a dimmable lighting device, which can implement segmental dimming to avoid stroboscopic phenomena caused by continuous current changes.
  • An aspect of an embodiment of the present invention provides a dimming circuit, including: an input unit, a segment dimming unit, and an output unit;
  • the input unit is respectively connected to a power source and the segment dimming unit for inputting a voltage or current signal to the segment dimming unit;
  • the segmentation dimming unit is further connected to the output unit, and is configured to output a voltage or current signal corresponding to different brightness to the output unit according to a user operation;
  • the output unit is configured to output the received voltage or current signal corresponding to different brightness to the light emitting device for driving the light emitting device to emit light.
  • a dimmable lighting device including: a lamp tube, a plug at two ends of the lamp tube, a heat dissipating metal, a dimming circuit, and a light emitting device, wherein the dimming circuit is as above The dimming circuit.
  • the dimming circuit and the dimmable lighting device provided by the embodiment of the invention adopt a segmented dimming unit, so that voltage or current signals corresponding to different brightnesses can be output to the light emitting device according to the operation of the user.
  • a dimming circuit can realize segmental dimming, thereby avoiding the stroboscopic phenomenon caused by continuous current change, and greatly improving the user experience.
  • FIG. 1 is a schematic structural diagram of a dimming circuit according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of another dimming circuit according to an embodiment of the present invention
  • FIG. 3 is a dimming circuit according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a dimmable lighting device according to an embodiment of the present invention.
  • the dimming circuit provided by the embodiment of the present invention includes: an input unit 11, a segment dimming unit 12, and an output unit 13.
  • the input unit 11 is respectively connected to the power supply and the segment dimming unit 12 for inputting a voltage or current signal to the segment dimming unit 12.
  • the segment dimming unit 12 is also connected to the output unit 13 for outputting a voltage or current signal corresponding to different brightness to the output unit 13 in accordance with the user's operation.
  • the output unit 13 is configured to output the received voltage or current signal corresponding to different brightness to the light emitting device, and drive the light emitting device to emit light.
  • the dimming circuit provided by the embodiment of the invention adopts a segmentation dimming unit, so that voltage or current signals corresponding to different brightnesses can be output to the light emitting device according to the operation of the user.
  • a dimming circuit can realize segmental dimming, thereby avoiding the stroboscopic phenomenon caused by continuous current change, and greatly improving the user experience.
  • the dimming circuit provided by the embodiment of the present invention can be applied to adjust various known light- or current-driven light-emitting devices, such as incandescent lamps, fluorescent lamps or LED lamps.
  • the existing dimming circuits usually use a thyristor circuit, which is difficult to adjust the brightness of the segments.
  • the segmented dimming circuit is adopted, and the segmentation adjustment of the brightness can be implemented according to the operation of the user, wherein the user can operate in many ways, for example, by switching the circuit for different times.
  • the action realizes the segmentation switching of the brightness, of course, this is merely an example, and the present invention is not limited thereto.
  • the input unit 11 may specifically include: an electromagnetic compatibility module 1 11 (EMC) and a rectification and filtering module 112.
  • EMC electromagnetic compatibility module 1 11
  • the dimming circuit is usually connected to 220V AC, and such an electromagnetic compatibility module 1 11 and the rectifying and filtering module 112 can effectively filter out unnecessary noise and achieve stable input of the signal.
  • the electromagnetic compatibility module 11 1 may further include a first inductor L l , a second inductor L2 , and a first resistor R1 .
  • the first inductor L 1 can adopt a common mode inductor
  • the second Inductor L2 can use differential mode inductance.
  • the first end of the first inductor L 1 is connected to the power source, and the second end of the first inductor L 1 is connected to the rectifying and filtering module 1 12 .
  • the second end of the second inductor L2 is coupled to the segment dimming unit 12.
  • the first resistor R1 is connected in parallel with the second inductor L2.
  • the rectifying and filtering module 112 may further include a rectifier bridge DB, a first capacitor C1, and a second capacitor C2.
  • the two input ends of the rectifier bridge DB are respectively connected to the second end of the first inductor L 1 , and one output end of the rectifier bridge DB is connected to the first end of the second inductor L2 .
  • the two ends of the first capacitor C 1 are respectively connected to the two output ends of the rectifier bridge DB, and one end is connected to the first end of the parallel connection body of the second inductor L2 and the first resistor R1.
  • One end of the second capacitor C2 is connected to the second end of the parallel connection body of the second inductor L2 and the first resistor R1, and the other end of the second capacitor C2 is connected to the output end of the rectifier bridge DB and not connected to the second inductor L2.
  • the segment dimming unit 12 may include a booting module 121, a dimming chip 122, and a switch driving module 123.
  • the startup module 121 may specifically include a second resistor R2, a third resistor R3, a fourth resistor R4, and a third capacitor C3.
  • the second resistor R2 has one end connected to the input unit 1 1, that is, the second resistor R2 is connected to the second inductor L2, and the other end of the second resistor R2 is connected to the third resistor R3.
  • the other end of the third resistor R3 is connected to the fourth resistor R4 and the dimming chip 122, respectively.
  • the other end of the fourth resistor R4 is grounded.
  • the third capacitor C3 is connected in parallel with the fourth resistor R4.
  • the dimming chip 122 is also grounded through the fourth capacitor C4, and is connected to the input unit 1 through the fifth resistor R5, that is, connected to the second inductor L2 through the fifth resistor R5, and connected to the driving power source VDD through the fifth capacitor C5.
  • the dimming chip may specifically include: a two-stage dimming chip, a three-stage dimming chip, or a stepless dimming chip, and the like. Dimming chip for the gear position.
  • using the X-segment dimming chip means that the dimming circuit can realize the adjustment of the X brightness of the light emitting device. Taking a two-stage dimming chip as an example, when the light-emitting device is completely lit, it is in the first brightness state, and any brightness state (such as half-lighting) between full lighting and off can be specified as the second brightness.
  • the light emitting device when the user turns on the switch of the dimming circuit for the first time, the light emitting device is fully lit. When the user quickly turns off and quickly turns the switch on again, the light emitting device switches to the second brightness (semi-lighting state), and each other The same type of dimming chip is the same.
  • the stepless dimming chip is different from the segment dimming chip.
  • the stepless dimming chip does not preset various brightness state gear positions.
  • the light emitting device When the user turns on the switch of the stepless dimming circuit for the first time, the light emitting device is completely lit. State, when the user quickly turns off and quickly turns on the switch again, the brightness of the light-emitting device will gradually decrease from the full-bright state. When the brightness is reduced to the brightness required by the user, the user can quickly turn off the switch again and quickly turn on the switch again, thereby achieving illumination. Segmented dimming of the device.
  • the dimming chip provided by the embodiment of the present invention can adopt a high power factor (PF) value constant current chip with a segmented dimming function.
  • PF power factor
  • the switch driving module 123 may include a sixth resistor R6, a transistor Q, and a first diode D1.
  • the sixth resistor R6 has one end connected to the dimming chip 122, and the other end of the sixth resistor R6 is connected to the gate of the transistor Q.
  • the first pole of the transistor Q is connected to the input unit 1 1, that is, connected to the second inductor L2, and the second pole of the transistor Q is connected to the dimming chip 122 and the cathode of the first diode D1, respectively.
  • the anode of the first diode D 1 is grounded.
  • the transistor used in the embodiment of the present invention may be a thin film transistor or a field effect transistor or other devices having the same characteristics. Since the source and the drain of the transistor used herein are symmetrical, the source and the drain are indistinguishable.
  • the transistor can be divided into an N-type transistor or a P-type transistor.
  • the first pole can be the source
  • the second pole can be the drain.
  • the output unit 13 may specifically include: a third inductor L3, a seventh resistor R7, a sixth capacitor C6, and a seventh capacitor C7.
  • the first end of the third inductor L3 is connected to the segment dimming unit 12, and the second end of the third inductor L3 is connected to the first end of the light emitting device.
  • One end of the seventh resistor R7 is connected to the second end of the third inductor L3, and the other end of the seventh resistor R7 is respectively connected to the second end of the light emitting device and the ground.
  • the sixth capacitor C6 and the seventh capacitor C7 are both connected in parallel with the seventh resistor R7.
  • Such a segmented dimming chip is employed as the dimming unit of the circuit, so that voltage or current signals corresponding to different brightnesses can be output to the light emitting device according to the user's operation.
  • a dimming circuit can realize segmental dimming, thereby avoiding the stroboscopic phenomenon caused by continuous current change, and greatly improving the user experience.
  • the dimming circuit may further include:
  • the feedback detecting unit 14 is connected to the segment dimming unit 12 and the output unit 13 respectively, so that the segment dimming unit 12 adjusts the output signal according to the feedback signal of the output unit 13.
  • the feedback detecting unit 14 may include: an output sampling feedback module 141 and a detecting module 142.
  • the output sample feedback module 141 may further include an eighth resistor R8 and a ninth resistor R9.
  • One end of the eighth resistor R8 is connected to the second pole of the transistor Q, and the other end of the eighth resistor R8 is connected to the first end of the third inductor L3.
  • the ninth resistor R9 is connected in parallel with the eighth resistor R8.
  • the detecting module 142 may further include a second diode D2, a tenth resistor R10, and an eleventh resistor R l l .
  • the anode of the second diode D2 is connected to the variable end of the third inductor L3, and the cathode of the second diode D2 is connected to one end of the tenth resistor R10.
  • the other end of the tenth resistor R10 is connected to the fifth power One end of the capacitor C5 connected to the dimming chip.
  • One end of the eleventh resistor R1 1 is connected to the variable end of the third inductor L3, and the other end of the eleventh resistor R 1 1 is connected to the dimming chip 122.
  • the dimming chip may specifically adopt various segmentation dimming chips including a two-stage dimming chip, a three-stage dimming chip or a stepless dimming chip.
  • segmentation dimming chips including a two-stage dimming chip, a three-stage dimming chip or a stepless dimming chip.
  • the structure can be as shown in FIG. 3.
  • the chip includes eight pins from top left to top right, wherein the first pin is connected to one end of the third resistor R3 for controlling whether Dimming; the second pin is connected to the capacitor C4, which can stabilize the chip; the third pin is the ground terminal; the fourth pin is connected to the resistor R ll for receiving the detection current; the fifth pin is respectively The capacitor C5 and the resistor R 10 are connected, and VDD supplies power to the chip through the pin; the sixth pin is connected to the gate of the transistor Q through the resistor R6, and is used for outputting a signal for controlling the transistor Q switch; the 7th pin is connected to the resistor R8, used to receive the sampling feedback signal at the output; the 8th pin is connected to the first pole of the transistor Q through the resistor R5, and is used to start the transistor 0.
  • a dimming chip With such a dimming chip, a voltage or current signal corresponding to different brightness can be output to the light emitting device according to a user's operation, which is different from the prior art using thyristor dimming, and the dimming circuit having such a dimming chip Segmented dimming can be achieved, thereby avoiding stroboscopic phenomena caused by continuous current changes.
  • an embodiment of the present invention further provides a dimmable lighting device, including: a lamp tube 41, a plug 42 at both ends of the lamp tube, a heat dissipating metal 43, a dimming circuit, and a light emitting device 44.
  • the dimming circuit can be a dimming circuit as described above.
  • the dimmable lighting device comprises a dimming circuit, and adopts a segmentation dimming unit, so that voltage or current signals corresponding to different brightnesses can be output to the light emitting device according to the operation of the user.
  • a dimming circuit can realize segmental dimming, thereby avoiding the stroboscopic phenomenon caused by continuous current change, and greatly improving the user experience.
  • the light emitting device may include an LED.
  • the light emitting device can be a single
  • the LED can also be an LED light bar, which is not limited in the present invention.
  • LED tube lamps have been widely used as a new generation of green energy-saving light sources.
  • the existing dimmable LED tube lamp mainly adopts a semi-plastic semi-aluminum structure, that is, the lamp part is made of plastic, the plugs at the two ends of the lamp tube and the heat sink are made of aluminum, and such a structure of the LED tube lamp is in use. During the process, the plug is heated due to charging, which not only affects the quality of the lamp but also poses a great safety hazard to the user.
  • the dimming function needs to be realized by the design of the thyristor and the potentiometer.
  • the structure of the thyristor and the potentiometer is usually large, and needs to be additionally fabricated outside the LED tube lamp, which seriously affects the appearance and use of the product.
  • embodiments of the present invention provide a dimmable lighting device.
  • the heat dissipating metal 43 is disposed inside the bulb 41, and the light emitting device 44 is disposed on the surface of the heat dissipating metal 43.
  • the dimming circuit can be disposed inside the plug 42. Both the bulb 41 and the plug 42 are made of an insulating material.
  • the heat dissipating metal 43 may be made of a metal material having high thermal conductivity such as aluminum.
  • the lamp tube 41 and the plug 42 may be made of an insulating plastic, which is not limited in the present invention.
  • the light emitting device 44 is preferably an LED light bar. Of course, it can also be a single LED or other form, which is not limited by the present invention.
  • the dimmable lighting device achieves a good insulation effect by adopting the all-plastic pipe material, and solves the problem of low safety performance of the existing lighting device. Further, by adopting such a dimming circuit design, the circuit design can be directly fabricated inside the lighting device, which significantly improves the aesthetics and practicability of the product. In addition, such a dimmable lighting device can control the dimming of the lighting device through the wall switch, which is very convenient, and solves the problem that the existing lighting device is complicated to be dimmed by the thyristor and the potentiometer.
  • the dimmable lighting device realizes the segment dimming function through a segment dimming unit, and can realize two-stage, three-stage and stepless dimming by replacing different constant current chips, without stroboscopic, The problem that the existing lighting equipment cannot be staged and strobed is solved.
  • a person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions.
  • the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes The foregoing steps of the method embodiment; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Abstract

本发明实施例公开了一种调光电路及可调光照明设备,涉及照明技术领域,调光电路包括:输入单元、分段调光单元以及输出单元;所述输入单元,分别连接电源和所述分段调光单元,用于向所述分段调光单元输入电压或电流信号;所述分段调光单元,还连接所述输出单元,用于根据用户的操作向所述输出单元输出对应不同亮度的电压或电流信号;所述输出单元,用于将接收到的对应不同亮度的电压或电流信号输出至发光器件,用于驱动所述发光器件发光。采用这样一种调光电路可以实现照明设备的分段调光,避免因电流连续变化而造成的频闪现象。

Description

调光电路及可调光照明设备 技术领域
本发明涉及照明技术领域, 尤其涉及一种调光电路及可调光照明设 备。 背景技术
随着技术的不断发展, LED ( Light Emi tting Diode , 发光二极管) 作为一种发光器件, 已在各种照明领域中得到了广泛的应用。 与传统 的发光器件 (如白炽灯、 CCFL ( Cold Cathode Fluorescent Lamp , 冷 阴极荧光灯) 等) 相比, 由于 LED光源具有节能、 高亮、 无红外和紫 外辐射等优点, 因此采用 LED 制作照明灯具能够适应当前人们对于绿 色、 节能和环保的要求。
为了满足人们对于照明灯具的不同应用需求, 各种能够控制发光器 件亮度变化的调光形式也应运而生。 与通过改变施加在白炽灯上的有效 电压来改变白炽灯发光亮度的控制方式不同, 由于 LED发光器件为电流 驱动器件, 对于现有的 LED发光器件而言, 通常是采用可控硅和电位器 的组合通过改变驱动 LED发光器件的电流实现亮度控制。 这样一种采用 可控硅的调光电路的不足之处在于, 调光过程通常根据用户的操作进行 非分段式的随机连续变化, 由于电流的随机变化, 在进行调光的过程中 由于可控硅增大了谐波系数与电磁干扰, 从而会因 LED驱动电源端的滤 波器件而产生噪声, 出现肉眼能够观察到的频闪现象, 严重影响用户的 使用感受。 发明内容
本发明的实施例提供一种调光电路及可调光照明设备, 可以实现 分段调光, 避免因电流连续变化而造成的频闪现象。
为达到上述目的, 本发明的实施例采用如下技术方案: 本发明实施例的一方面, 提供一种调光电路, 包括: 输入单元、 分段调光单元以及输出单元;
所述输入单元, 分别连接电源和所述分段调光单元, 用于向所述 分段调光单元输入电压或电流信号;
所述分段调光单元, 还连接所述输出单元, 用于根据用户的操作 向所述输出单元输出对应不同亮度的电压或电流信号;
所述输出单元, 用于将接收到的对应不同亮度的电压或电流信号 输出至发光器件, 用于驱动所述发光器件发光。
本发明实施例的另一方面, 提供一种可调光照明设备, 包括: 灯 管、 位于所述灯管两端的堵头、 散热金属、 调光电路和发光器件, 所 述调光电路为如上所述的调光电路。
本发明实施例提供的调光电路及可调光照明设备, 采用分段调光单 元, 从而可以根据用户的操作来向发光器件输出对应不同亮度的电压或 电流信号。 与现有技术采用可控硅调光不同, 这样一种调光电路可以实 现分段调光, 从而避免了因电流连续变化而造成的频闪现象, 大大提高 了用户的使用感受。 附图说明
图 1为本发明实施例提供的一种调光电路的结构示意图; 图 2为本发明实施例提供的另一调光电路的结构示意图; 图 3为本发明实施例提供的一种调光电路的电路连接结构示意图; 图 4为本发明实施例提供的一种可调光照明设备的结构示意图。 具体实舫式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方 案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部 分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普 通技术人员所获得的所有其他实施例, 都属于本发明保护的范围。 本发明实施例提供的调光电路, 如图 1所示, 包括: 输入单元 11、 分段调光单元 12以及输出单元 13。
其中, 输入单元 11分别连接电源和分段调光单元 12, 用于向分段 调光单元 12输入电压或电流信号。
分段调光单元 12, 还连接输出单元 13, 用于根据用户的操作向输 出单元 13输出对应不同亮度的电压或电流信号。
输出单元 13, 用于将接收到的对应不同亮度的电压或电流信号输 出至发光器件, 驱动该发光器件发光。
本发明实施例提供的调光电路, 采用分段调光单元, 从而可以根 据用户的操作来向发光器件输出对应不同亮度的电压或电流信号。 与 现有技术采用可控硅调光不同, 这样一种调光电路可以实现分段调光, 从而避免了因电流连续变化而造成的频闪现象, 大大提高了用户的使 用感受。
需要说明的是, 本发明实施例提供的调光电路可以适用于调节已 知的各种依靠电压或电流驱动的发光器件, 例如白炽灯、荧光灯或 LED 灯。 尤其是对于 LED 灯而言, 现有的调光电路通常采用可控硅电路难 以进行亮度的分段式调节。 在本发明实施例中, 采用这样一种分段式 调光电路, 可以根据用户的操作实现亮度的分段式调节, 其中用户的 操作方式可以有很多, 例如可以通过对电路进行不同次数的开关动作 实现亮度的分段切换, 当然这仅仅是举例说明, 本发明并不局限于此。
进一步地, 如图 2所示, 输入单元 11具体可以包括: 电磁兼容模 块 1 11 ( EMC ) 和整流滤波模块 112。 在日常使用的过程中, 调光电路 通常连接 220V的交流电, 采用这样一种电磁兼容模块 1 11和整流滤波 模块 112可以有效过滤掉不必要的噪声, 实现信号的稳定输入。
如图 3所示, 电磁兼容模块 11 1又可以包括第一电感 L l、 第二电 感 L2和第一电阻 Rl。 具体的, 第一电感 L 1可以采用共模电感, 第二 电感 L2可以采用差模电感。
其中, 第一电感 L 1 的第一端连接电源, 第一电感 L 1 的第二端连 接整流滤波模块 1 12。 第二电感 L2的第二端连接分段调光单元 12。 第 一电阻 R1与第二电感 L2并联。
进一步地, 如图 3所示, 整流滤波模块 1 12还可以包括整流桥 DB、 第一电容 C 1和第二电容 C2。
其中, 整流桥 DB的两个输入端分别连接第一电感 L 1 的第二端, 整流桥 DB的一个输出端连接第二电感 L2的第一端。第一电容 C 1的两 端分别连接整流桥 DB的两个输出端, 并且, 一端连接第二电感 L2与 第一电阻 R1 的并联连接体的第一端。 第二电容 C2的一端连接第二电 感 L2与第一电阻 R1的并联连接体的第二端, 第二电容 C2的另一端连 接整流桥 DB的输出端中的、 不与第二电感 L2连接的输出端。
采用这样一种电磁兼容模块 1 1 1和整流滤波模块 1 12可以有效过 滤掉不必要的噪声, 实现信号的稳定输入。
进一步地,如图 2所示,分段调光单元 12可以包括:启动模块 121、 调光芯片 122和开关驱动模块 123。
如图 3所示, 启动模块 121具体可以包括第二电阻 R2、 第三电阻 R3、 第四电阻 R4和第三电容 C3。
其中, 第二电阻 R2的一端连接输入单元 1 1, 即第二电阻 R2与第 二电感 L2相连接, 第二电阻 R2的另一端连接第三电阻 R3。 第三电阻 R3的另一端分别连接第四电阻 R4和调光芯片 122。 第四电阻 R4的另 一端接地。 第三电容 C3与第四电阻 R4并联。
进一步地, 调光芯片 122还通过第四电容 C4接地, 通过第五电阻 R5连接输入单元 1 1, 即通过第五电阻 R5与第二电感 L2相连接, 通过 第五电容 C5连接驱动电源 VDD。
需要说明的是, 在本发明实施例中, 调光芯片具体可以采用包括: 二段式调光芯片、 三段式调光芯片或无极调光芯片等各种具有不同调 节档位的调光芯片。 其中, 采用 X段式调光芯片即代表该调光电路可 以实现对发光器件的 X种亮度的调节。 以二段式调光芯片为例, 当发 光器件完全点亮时, 其处于第一亮度状态, 可以规定完全点亮与关闭 之间的任意一种亮度状态 (如半点亮) 为第二亮度状态, 当用户第一 次打开调光电路的开关时, 发光器件处于完全点亮状态, 当用户快速 关闭并再次快速打开开关时, 发光器件切换至第二亮度 (半点亮) 状 态, 其他各种段式调光芯片同理。 无极调光芯片与段式调光芯片不同, 无极调光芯片并未预先设定各种不同的亮度状态档位, 当用户第一次 打开无极调光电路的开关时, 发光器件处于完全点亮状态, 当用户快 速关闭并再次快速打开开关时, 发光器件的亮度将从全亮状态开始亮 度逐渐降低, 当降低到用户需要的亮度时, 用户可以再次快速关闭并 再次快速打开开关, 从而实现发光器件的分段调光。
具体的, 本发明实施例提供的调光芯片可以采用具有分段式调光 功能的高功率因数 (PF ) 值恒流芯片。 这样一来, 可以在实现分段调 光的同时进一步防止频闪现象的产生, 进一步提高了产品的质量。
进一步地, 如图 3所示, 开关驱动模块 123可以包括第六电阻 R6、 晶体管 Q和第一二极管 D l。
其中, 第六电阻 R6的一端连接调光芯片 122, 第六电阻 R6的另一 端连接晶体管 Q的栅极。 晶体管 Q的第一极连接输入单元 1 1, 即与第 二电感 L2相连接, 晶体管 Q的第二极分别连接调光芯片 122以及第一 二极管 D 1的负极。 第一二极管 D 1的正极接地。
本发明实施例中采用的晶体管可以为薄膜晶体管或场效应管或其 他特性相同的器件, 由于这里采用的晶体管的源极、 漏极是对称的, 所以其源极、 漏极是没有区别的。 此外, 按照晶体管的特性区分可以 将晶体管分为 N型晶体管或 P型晶体管, 在本发明实施例中, 当采用 N 型晶体管时, 其第一极可以是源极, 第二极可以是漏极, 当采用 P 型 晶体管时, 其第一极可以是漏极, 第二极可以是源极。 进一步地, 如图 3所示, 输出单元 13具体可以包括: 第三电感 L3、 第七电阻 R7、 第六电容 C6和第七电容 C7。
该第三电感 L3的第一端连接分段调光单元 12, 第三电感 L3的第 二端连接发光器件的第一端。
第七电阻 R7的一端连接第三电感 L3的第二端, 第七电阻 R7的另 一端分别连接发光器件的第二端和接地。
第六电容 C6和第七电容 C7均与第七电阻 R7并联。
采用这样一种分段式调光芯片作为电路的调光单元, 从而可以根 据用户的操作来向发光器件输出对应不同亮度的电压或电流信号。 与 现有技术采用可控硅调光不同, 这样一种调光电路可以实现分段调光, 从而避免了因电流连续变化而造成的频闪现象, 大大提高了用户的使 用感受。
进一步地, 如图 1所示, 调光电路还可以包括:
反馈检测单元 14, 反馈检测单元 14分别与分段调光单元 12和输 出单元 13相连接, 以使得分段调光单元 12根据输出单元 13的反馈信 号调节输出信号。
具体的, 如图 2所示, 反馈检测单元 14可以包括: 输出取样反馈 模块 141和检测模块 142。
其中, 如图 3所示, 输出取样反馈模块 141还可以包括第八电阻 R8和第九电阻 R9。
第八电阻 R8的一端连接晶体管 Q的第二极, 第八电阻 R8的另一 端连接第三电感 L3的第一端。 第九电阻 R9与第八电阻 R8并联。
检测模块 142还可以包括第二二极管 D2、 第十电阻 R10和第十一 电阻 R l l。
第二二极管 D2的正极连接第三电感 L3的可变端, 第二二极管 D2 的负极连接第十电阻 R 10的一端。 第十电阻 R10 的另一端连接第五电 容 C5的、 与所述调光芯片相连接的一端。 第十一电阻 R1 1的一端连接 第三电感 L3的可变端, 第十一电阻 R 1 1的另一端连接调光芯片 122。
具体的, 在本发明实施例中, 调光芯片具体可以采用包括二段式 调光芯片、 三段式调光芯片或无极调光芯片等在内的各种分段式调光 芯片。 以二段式调光芯片为例, 其结构可以如图 3 所示, 该芯片由左 上至右上分别包括八个引脚,其中,第 1引脚连接第三电阻 R3的一端, 用于控制是否进行调光; 第 2引脚连接电容 C4, 可以起到稳定芯片工 作的作用; 第 3引脚为接地端; 第 4引脚连接电阻 R l l, 用于接收检测 电流; 第 5引脚分别与电容 C5以及电阻 R 10相连接, VDD通过该引脚 向芯片供电; 第 6引脚通过电阻 R6与晶体管 Q的栅极相连接, 用于输 出控制晶体管 Q开关的信号; 第 7引脚连接电阻 R8, 用于接收输出端 的取样反馈信号; 第 8引脚通过电阻 R5与晶体管 Q的第一极相连接, 用于启动晶体管 0。采用这样一种调光芯片, 可以根据用户的操作来向 发光器件输出对应不同亮度的电压或电流信号, 与现有技术采用可控 硅调光不同, 具有这样一种调光芯片的调光电路可以实现分段调光, 从而避免了因电流连续变化而造成的频闪现象。
进一步, 如图 4所示, 本发明实施例还提供了一种可调光照明设 备, 包括: 灯管 41、 位于灯管两端的堵头 42、 散热金属 43、 调光电路 和发光器件 44, 其中, 调光电路可以为如上任一所述的调光电路。
调光电路的具体结构已在前述实施例中做了详细的描述, 故此处 不再赘述。
本发明实施例提供的可调光照明设备, 包括调光电路, 采用分段 调光单元, 从而可以根据用户的操作来向发光器件输出对应不同亮度 的电压或电流信号。 与现有技术采用可控硅调光不同, 这样一种调光 电路可以实现分段调光, 从而避免了因电流连续变化而造成的频闪现 象, 大大提高了用户的使用感受。
进一步地, 发光器件可以包括 LED。 具体的, 发光器件可以为单个 的 LED , 也可以为 LED灯条, 本发明对此不做限制。 在现有的各种照明 设备中, LED管灯作为新一代绿色节能光源得到了广泛的应用。现有的 可调光 LED 管灯主要采用半塑半铝结构, 即灯管部分采用塑料, 位于 灯管两端的堵头以及散热片则采用铝材制作, 这样一种结构的 LED 管 灯在使用的过程中, 堵头处由于带电而产生高温, 这不仅会影响灯管 的质量且对用户的使用带来了极大的安全隐患。 此外, 调光功能需要 通过可控硅和电位器的设计来实现, 可控硅和电位器的结构通常较大, 需要额外制作在 LED 管灯之外, 这严重影响了产品的美观与使用。 针 对以上问题, 本发明实施例提出了一种可调光照明设备。
具体的, 如图 4所示, 可调光照明设备中,
散热金属 43设置于所述灯管 41内部, 发光器件 44设置于散热金 属 43的表面。 其中, 调光电路可以设置于堵头 42的内部。 灯管 41与 堵头 42均采用绝缘材料制成。
具体的, 散热金属 43可以选用铝材等具有高导热性的金属材料, 灯管 41与堵头 42可以采用绝缘塑料制成, 本发明对此并不做限制。
具体的, 图 4中, 发光器件 44优选为 LED灯条。 当然, 也可以为 单个的 LED或者其他形式, 本发明对此不做限制。
这样一来, 可调光照明设备通过采用全塑管材, 达到了良好的绝 缘效果, 解决了现有照明设备安全性能低的问题。 进一步地, 通过采 用这样一种调光电路设计, 可以直接将电路设计制作于照明设备的内 部, 显著提高了产品的美观和实用性。 此外, 这样一种可调光照明设 备能够通过墙壁开关来控制照明设备的调光, 非常方便, 解决了现有 照明设备通过可控硅和电位器来调光操作复杂的问题。
本发明实施例提供的可调光照明设备通过一种分段调光单元来实 现分段调光功能, 通过更换不同的恒流芯片可以实现两段、 三段以及 无极调光, 无频闪, 解决了现有照明设备无法分段调光且有频闪的问 题。 本领域普通技术人员可以理解: 实现上述方法实施例的全部或部 分步骤可以通过程序指令相关的硬件来完成, 前述的程序可以存储于 计算机可读取存储介质中, 该程序在执行时, 执行包括上述方法实施 例的步骤; 而前述的存储介质包括: R0M、 RAM, 磁碟或者光盘等各种 可以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不 局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围 内, 可轻易想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应以所述权利要求的保护范围为准。

Claims

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1、 一种调光电路, 其特征在于, 包括: 输入单元、 分段调光单元 以及输出单元;
所述输入单元, 分别连接电源和所述分段调光单元, 用于向所述 分段调光单元输入电压或电流信号;
所述分段调光单元, 还连接所述输出单元, 用于根据用户的操作 向所述输出单元输出对应不同亮度的电压或电流信号;
所述输出单元, 用于将接收到的对应不同亮度的电压或电流信号 输出至发光器件, 用于驱动所述发光器件发光。
2、 根据权利要求 1所述的调光电路, 其特征在于, 所述输入单元 包括: 电磁兼容模块和整流滤波模块;
所述电磁兼容模块包括第一电感、 第二电感和第一电阻; 所述第一电感的第一端连接所述电源, 所述第一电感的第二端连 接所述整流滤波模块; 所述第二电感的第二端连接所述分段调光单元; 所述第一电阻与所述第二电感并联;
所述整流滤波模块包括整流桥、 第一电容和第二电容;
所述整流桥的两个输入端分别连接所述第一电感的第二端, 所述 整流桥的一个输出端连接所述第二电感的第一端; 所述第一电容的两 端分别连接所述整流桥的两个输出端, 并且一端连接所述第二电感与 所述第一电阻的并联连接体的第一端; 所述第二电容的一端连接所述 第二电感与所述第一电阻的并联连接体的第二端, 所述第二电容的另 一端连接所述整流桥的输出端中不与所述第二电感连接的输出端。
3、 根据权利要求 1或 2所述的调光电路, 其特征在于, 所述分段 调光单元包括: 启动模块、 调光芯片和开关驱动模块;
所述启动模块包括第二电阻、 第三电阻、 第四电阻和第三电容; 所述第二电阻的一端连接所述输入单元, 所述第二电阻的另一端 连接所述第三电阻; 所述第三电阻的另一端分别连接所述第四电阻和 所述调光芯片; 所述第四电阻的另一端接地; 所述第三电容与所述第 四电阻并联;
所述调光芯片还通过第四电容接地, 通过第五电阻连接所述输入 单元, 通过第五电容连接驱动电源;
所述开关驱动模块包括第六电阻、 晶体管和第一二极管; 所述第六电阻的一端连接所述调光芯片, 所述第六电阻的另一端 连接所述晶体管的栅极; 所述晶体管的第一极连接所述输入单元, 所 述晶体管的第二极分别连接所述调光芯片以及所述第一二极管的负 极; 所述第一二极管的正极接地。
4、 根据权利要求 3所述的调光电路, 其特征在于, 所述调光芯片 采用: 二段式调光芯片、 三段式调光芯片或无极调光芯片。
5、 根据权利要求 1-4任一所述的调光电路, 其特征在于, 所述输 出单元包括:
第三电感、 第七电阻、 第六电容和第七电容,
所述第三电感的第一端连接所述分段调光单元, 所述第三电感的 第二端连接发光器件的第一端;
所述第七电阻的一端连接所述第三电感的第二端, 所述第七电阻 的另一端分别连接所述发光器件的第二端和接地;
所述第六电容和第七电容均与所述第七电阻并联。
6、 根据权利要求 1或 2所述的调光电路, 其特征在于, 所述调光 电路还包括:
反馈检测单元, 其分别与所述分段调光单元和所述输出单元相连 接, 以使得所述分段调光单元根据所述输出单元的反馈信号调节输出 信号。
7、 根据权利要求 3-5任一所述的调光电路, 其特征在于, 所述调 光电路还包括:
反馈检测单元, 其分别与所述分段调光单元和所述输出单元相连 接, 以使得所述分段调光单元根据所述输出单元的反馈信号调节输出 信号。
8、 根据权利要求 7所述的调光电路, 其特征在于, 所述反馈检测 单元包括: 输出取样反馈模块和检测模块;
所述输出取样反馈模块包括第八电阻和第九电阻;
所述第八电阻的一端连接所述晶体管的第二极, 所述第八电阻的 另一端连接所述第三电感的第一端; 所述第九电阻与所述第八电阻并 联;
所述检测模块包括第二二极管、 第十电阻和第十一电阻;
所述第二二极管的正极连接所述第三电感的可变端, 所述第二二 极管的负极连接所述第十电阻的一端; 所述第十电阻的另一端连接所 述第五电容的、 与所述调光芯片相连接的一端; 所述第十一电阻的一 端连接所述第三电感的可变端, 所述第十一电阻的另一端连接所述调 光芯片。
9、 一种可调光照明设备, 包括: 灯管、位于所述灯管两端的堵头、 散热金属、 调光电路和发光器件, 其特征在于,
所述调光电路为权利要求 1-8任一所述的调光电路。
10、 根据权利要求 9所述的可调光照明设备, 其特征在于, 所述发光器件包括发光二级管。
11、 根据权利要求 9或 10所述的可调光照明设备, 其特征在于, 所述散热金属设置于所述灯管内部;
所述发光器件设置于所述散热金属的表面;
所述调光电路设置于所述堵头的内部;
所述灯管与所述堵头均采用绝缘材料制成。
PCT/CN2013/087764 2013-08-15 2013-11-25 调光电路及可调光照明设备 WO2015021706A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107613610A (zh) * 2017-09-26 2018-01-19 深圳市中科智联科技有限公司 智能照明控制器
CN108135055A (zh) * 2018-01-12 2018-06-08 厦门恩耐照明技术有限公司 一种可自由选择调光模式的线性调光调色电路
CN108882470A (zh) * 2018-09-13 2018-11-23 茂硕科技有限公司 Led调光电路
CN108916757A (zh) * 2018-07-27 2018-11-30 佛山市塱奥照明科技有限公司 一种可实现无级调光的灯具
CN109195259A (zh) * 2018-09-30 2019-01-11 惠州三华工业有限公司 混合调光电路及调光系统
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1359255A (zh) * 2000-12-18 2002-07-17 刘英彰 数字式调光电路
CN200950687Y (zh) * 2006-09-14 2007-09-19 河南安彩照明杭州有限公司 智能灯调光系统
CN101169918A (zh) * 2006-10-23 2008-04-30 中华映管股份有限公司 光源驱动电路
CN102387625A (zh) * 2010-08-27 2012-03-21 冠捷投资有限公司 直驱式发光二极管驱动器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101801129A (zh) * 2010-01-28 2010-08-11 海洋王照明科技股份有限公司 一种led小功率驱动电路及led灯具
CN202580832U (zh) * 2012-05-15 2012-12-05 鄢照珉 Led日光灯
CN202998600U (zh) * 2012-12-20 2013-06-12 南京吉山光电科技有限公司 一种led调光灯
CN203446057U (zh) * 2013-08-15 2014-02-19 京东方科技集团股份有限公司 一种调光电路及可调光照明设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1359255A (zh) * 2000-12-18 2002-07-17 刘英彰 数字式调光电路
CN200950687Y (zh) * 2006-09-14 2007-09-19 河南安彩照明杭州有限公司 智能灯调光系统
CN101169918A (zh) * 2006-10-23 2008-04-30 中华映管股份有限公司 光源驱动电路
CN102387625A (zh) * 2010-08-27 2012-03-21 冠捷投资有限公司 直驱式发光二极管驱动器

Cited By (10)

* Cited by examiner, † Cited by third party
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CN107613610A (zh) * 2017-09-26 2018-01-19 深圳市中科智联科技有限公司 智能照明控制器
CN107613610B (zh) * 2017-09-26 2023-10-24 深圳市中科智联科技有限公司 智能照明控制器
CN108135055A (zh) * 2018-01-12 2018-06-08 厦门恩耐照明技术有限公司 一种可自由选择调光模式的线性调光调色电路
CN108916757A (zh) * 2018-07-27 2018-11-30 佛山市塱奥照明科技有限公司 一种可实现无级调光的灯具
CN108882470A (zh) * 2018-09-13 2018-11-23 茂硕科技有限公司 Led调光电路
CN108882470B (zh) * 2018-09-13 2023-08-01 深圳茂硕电子科技有限公司 Led调光电路
CN109195259A (zh) * 2018-09-30 2019-01-11 惠州三华工业有限公司 混合调光电路及调光系统
CN109195259B (zh) * 2018-09-30 2024-03-22 惠州三华工业有限公司 混合调光电路及调光系统
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