WO2018072486A1 - 发光二极体装置 - Google Patents

发光二极体装置 Download PDF

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Publication number
WO2018072486A1
WO2018072486A1 PCT/CN2017/092427 CN2017092427W WO2018072486A1 WO 2018072486 A1 WO2018072486 A1 WO 2018072486A1 CN 2017092427 W CN2017092427 W CN 2017092427W WO 2018072486 A1 WO2018072486 A1 WO 2018072486A1
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Prior art keywords
emitting diode
signal
light emitting
voltage value
string
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PCT/CN2017/092427
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English (en)
French (fr)
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高延增
吴明浩
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漳洲立达信光电子科技有限公司
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Publication of WO2018072486A1 publication Critical patent/WO2018072486A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/237—Details of housings or cases, i.e. the parts between the light-generating element and the bases; Arrangement of components within housings or cases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/238—Arrangement or mounting of circuit elements integrated in the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/105—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening using magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/005—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by permanent fixing means, e.g. gluing, riveting or embedding in a potting compound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • This invention relates to the field of illumination, and more particularly to the field of Light Emitting Diode (LED) devices.
  • LED Light Emitting Diode
  • the electrolytic capacitor Since the electrolytic capacitor is large in size and takes up a large space of the driving circuit, it is difficult to further miniaturize the driving circuit. Moreover, the life of the electrolytic capacitor is greatly affected by the ambient temperature of the driving circuit space, which causes the electrolytic capacitor to fail prematurely, resulting in a shortened life of the entire lamp. Larger inductors and transformer volumes also make it difficult to miniaturize the drive structure. In addition, efficient dimming control LED devices are very important for modern lighting applications.
  • Another object of the present invention is to provide a dimming control that can use a phase dimmer to control pulse width modulation of a light emitting diode device (Pulse Width Modulation, PWM) switch.
  • PWM Pulse Width Modulation
  • the pulse width modulation controller converts the rectified signal into a switching signal according to the rectified signal, and the control unit is connected in series to the first LED dipole and the second LED string.
  • the pulse width modulation controller stops converting the rectified signal into a switching signal, and the control unit connects the first LED dipole and the second LED string in parallel.
  • a light emitting diode device for receiving an adjustment signal.
  • the adjustment signal is output by a phase dimmer that reduces a portion of the phase of an input signal to output the adjustment signal.
  • the light emitting diode device comprises a first light emitting diode light string, a second light emitting diode light string, a rectifying module and a control unit.
  • the rectifier module rectifies the adjustment signal and outputs the rectified signal.
  • the control unit receives the rectified signal.
  • the control unit has a parallel mode and a series mode.
  • the control unit includes a pulse width modulation controller.
  • the pulse width modulation controller generates a switching signal based on at least one parameter calculated from the rectified signal.
  • control unit When the control unit is in the parallel mode, the control unit is connected in parallel with the first LED string and the second LED lamp. When the control unit is in the series mode, the control unit is connected in series to the first LED string and the second LED string.
  • a light emitting diode device for receiving an adjustment signal.
  • the adjustment signal is output by a phase dimmer that reduces a portion of the phase of an input signal to output the adjustment signal.
  • the light emitting diode device includes a first light emitting diode light string, a first pulse width modulation transistor, a second light emitting diode light string, a second pulse width modulation transistor, a rectifying module, and a control unit.
  • the first pulse width modulation transistor is coupled to the first light emitting diode string.
  • the second pulse width modulation transistor is coupled to the second light emitting diode string.
  • the rectifier module rectifies the adjustment signal and outputs the rectified signal.
  • the control unit includes a pulse width modulation controller and an input voltage detecting unit.
  • the control unit receives the rectified signal.
  • the pulse width modulation controller fabricates the pulse width modulated signal to control the first pulse width modulation transistor and the second pulse width modulation transistor.
  • the input voltage detecting unit compares the rectified signal with a preset voltage value.
  • the light emitting diode device can have efficient dimming control.
  • the dimming control can be a pulse width modulation switch that uses a phase dimmer to control the light emitting diode device. Dimming control helps the LED device to be used for traditional phase dimming control.
  • Another embodiment of a light emitting diode device is illustrated.
  • a waveform of a rectified signal and an output current when a part of the phase is cut.
  • Figure 1 illustrates an embodiment of a light emitting diode device.
  • Figure 2 illustrates another embodiment of a light emitting diode device.
  • Figure 3 illustrates the waveform of the rectified signal and the output current.
  • Fig. 4 illustrates waveforms of a rectified signal and an output current when a part of the phase is cut.
  • Figure 5 illustrates the waveforms of the rectified signal and the output current when the phase of the other portion is cut.
  • Figure 6 illustrates the waveforms of the rectified signal and the output current when the phase of the other portion is cut.
  • Figure 7 illustrates an example of output current when a switching signal is applied.
  • Figure 8 illustrates another example of output current when a switching signal is applied.
  • Figure 9 illustrates an example of a pulse width modulation transistor connected to a light emitting diode string.
  • a light emitting diode device 100 is configured to receive an adjustment signal 12.
  • the adjustment signal 12 is output by a phase dimmer 13 that reduces a portion of the phase of an input signal 11 to output the adjustment signal 12.
  • the light emitting diode device 100 includes a first light emitting diode light string 21 , a second light emitting diode light string 22 , a rectifying module 10 , and a control unit 30 .
  • the rectifier module 10 rectifies the adjustment signal 12 and outputs the rectified signal 14.
  • the phase dimmer 13 reduces the phase of a portion of the input signal 11 and outputs the rectified signal 14.
  • Control unit 30 includes a pulse width modulation controller 506.
  • phase dimmer 13 is a leading edge phase cut dimmer. In some embodiments, phase dimmer 13 is a silicon controlled rectifier. In some embodiments, phase dimmer 13 is a TRIAC dimmer. In some embodiments, phase dimmer 13 is a trailing edge phase cut dimmer. In some embodiments, phase dimmer 13 is a MOS dimmer.
  • control unit 30 also includes a switch combination 31.
  • the switch combination 31 can be a switch combination 503.
  • the switch combination 503 When the voltage value of the rectified signal 14 is higher than the first preset voltage value U1 and lower than the second preset voltage value U2, the switch combination 503 is connected in parallel to the first LED string 21 and the second LED lamp. String 22.
  • the switch combination 503 When the voltage value of the rectified signal 14 is higher than the second preset voltage value U2, the switch combination 503 is connected in series to the first LED array 21 and the second LED string 22.
  • the switch combination 31 includes a first switch 311, a second switch 312, and a third switch 313.
  • a first switch 311, a second switch 312, and a third switch 313. Referring to FIG. 1, FIG. 2, and FIG. 3, when the voltage value of the rectified signal 14 is higher than the first preset voltage value U1 and lower than the second voltage value U2, the first switch 311 is connected, and the second switch 312 is connected. The third switch 313 is turned off, so that the first LED array 21 and the second LED string 22 are connected in parallel.
  • the first switch 311 is turned off, the second switch 312 is turned off, and the third switch 313 is connected, so that the first LED string 21 and The second light emitting diode strings 22 are connected in series.
  • the rising phase of a portion of the rectified signal is cut by phase dimmer 13 at point 401 to form a leading edge phase cut reduction effect.
  • the voltage value of the point 401 is higher than the first preset voltage value U1 and lower than the second preset voltage value.
  • the corresponding drive current is also reduced, so the brightness is represented by the remaining phase of the rectified signal.
  • the average voltage value of the rectified signal is proportional to the brightness of the light emitting diode device 100.
  • the rising phase of a portion of the rectified signal is cut by phase dimmer 13 at point 501 to form a leading edge tangential reduction effect.
  • the voltage value of point 501 is higher than the second preset voltage value U2.
  • the corresponding drive current is also reduced, so the brightness is represented by the remaining phase of the rectified signal.
  • the duty cycle of the drive current is proportional to the brightness of the light emitting diode device 100.
  • the rising phase of a portion of the rectified signal is cut by phase dimmer 13 at point 601 to form a leading edge phase cut reduction effect.
  • the voltage value of the point 601 is higher than the first preset voltage value U1 and lower than the second preset voltage value U2.
  • the corresponding drive current is also reduced, so the brightness is represented by the remaining phase of the rectified signal.
  • the average voltage value of the rectified signal is proportional to the brightness of the light emitting diode device.
  • a light emitting diode device 100 for receiving an adjustment signal 12 is disclosed.
  • the adjustment signal 12 is output by a phase dimmer 13 that reduces a portion of the phase of an input signal 11 to output the adjustment signal 12.
  • the light emitting diode device 100 includes a first light emitting diode light string 21 , a second light emitting diode light string 22 , a rectifying module 10 , and a control unit 30 .
  • the rectifier module 10 rectifies the adjustment signal 12 and outputs the rectified signal 14.
  • the phase dimmer 13 cuts the phase of the partially rectified signal 12 and outputs the rectified signal 14.
  • Control unit 30 receives rectified signal 14.
  • the control unit 30 has a parallel mode and a series mode.
  • Control unit 30 includes a pulse width modulation controller 506.
  • the pulse width modulation controller 506 generates the switching signal 15 in accordance with at least one parameter calculated from the rectified signal.
  • control unit 30 When the control unit 30 is in the parallel mode, the control unit 30 connects the first LED array 21 and the second LED string 22 in parallel. When the control unit 30 is in the series mode, the control unit connects the first LED array 21 and the second LED string 22 in series.
  • the parameter is a root mean square value calculated from the rectified signal. In some embodiments, the parameter is an average voltage value calculated from the rectified signal. In some embodiments, pulse width modulation controller 506 only outputs switching signal 15 when control unit 30 is in series mode. In some embodiments, the pulse width modulation controller 506 outputs the switching signal 15 in both the parallel mode and the series mode. In some embodiments, the duty cycle of the switching signal 15 is the same as the duty cycle of the rectified signal.
  • a light emitting diode device is configured to receive an adjustment signal 12.
  • the adjustment signal 12 is output by a phase dimmer 13 that reduces a portion of the phase of an input signal 11 to output the adjustment signal 12.
  • the light emitting diode device includes a light emitting diode light string 21, a first pulse width modulation transistor 81, a second light emitting diode light string 22, a second pulse width modulation transistor 82, a rectifying module 10, and a control unit 30.
  • the first pulse width modulation transistor 81 is connected to the first light emitting diode string 21.
  • the second pulse width modulation transistor 82 is connected to the second light emitting diode string 22.
  • the rectifier module 10 rectifies the adjustment signal 12 and outputs the rectified signal 14.
  • the phase dimmer 13 reduces the phase of a part of the rectified signal 12 and outputs the rectified signal 14.
  • the first LED array 21 and the second LED string 22 share the first pulse width modulation transistor 81.
  • the first LED array 21 and the second LED string 22 do not share the first pulse width modulation transistor 81.
  • the preset voltage value U2 is a second predetermined voltage value U2.
  • Control unit 30 also includes a switch combination 503.
  • the switch combination 503 When the voltage value of the rectified signal 14 is higher than the first preset voltage value U1 and lower than the second preset voltage value U2, the switch combination 503 is connected in parallel to the first light emitting diode string and the second LED string .
  • the switch combination 503 When the voltage value of the rectified signal is higher than the second preset voltage value U2, the switch combination 503 is connected in series to the first LED array 21 and the second LED string 21.
  • control unit 30 further includes an adjustment module 504 for generating a constant current to each of the first LED string 21 and the second LED string 22 .
  • control unit 30 further includes a logic circuit 505, a switch combination 503, and an adjustment module 504 for controlling the input voltage detection unit 502.
  • the pulse width modulation controller generates the switching signal 15 based on at least one parameter 506 calculated from the rectified signal.
  • the adjustment module 504 can provide an appropriate current value such that each of the first LED string 21 and the second LED string 22 can have a constant current, whether in a parallel mode or a series mode.
  • the parameter is a root mean square value calculated from the rectified signal. In some embodiments, the parameter is an average voltage value calculated from the rectified signal. In some embodiments, the duty cycle of the switching signal 15 is the same as the duty cycle of the rectified signal. In some embodiments, the second pulse width modulation transistor 82 is turned off when the voltage value of the rectified signal is greater than the preset voltage value U2.
  • the pulse width modulation signal 15 controls the on/off states of the pulse width modulation transistors 81, 82. Therefore, the corresponding current flowing through the first LED array 21 and the second LED string 22 can be controlled.
  • the two pulse width modulation transistors 81, 82 are used to respectively control two LED strings.
  • only one pulse width modulation transistor 81 is used to control the driving voltage. In this case, the first light-emitting diode string 21 and the second light-emitting diode string 22 share the pulse width modulation transistor 81.
  • a switched drive current having a current value of I2 can be generated.
  • the duty cycle of the drive current in the switching is proportional to the brightness of the light emitting diode device.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

一种发光二极体装置（100），包括整流模块（10）、第一发光二极体灯串（21）、第二发光二极体灯串（22）以及控制单元（30）。发光二极体用于接收调整信号（12）。该调整信号（12）由整流模块（10）前端的相位调光器（13）输出，该相位调光器（13）削减输入信号（11）的一部分相位以输出该调整信号（12）。发光二极体装置（100）的整流模块（10）整流调整信号（12）及输出整流信号（14）。控制单元（30）接收整流信号（14），控制单元（30）将整流信号（14）与预设电压值进行比较。该控制单元（30）还包括脉冲宽度调制控制器（506），脉冲宽度调制控制器（506）在串联模式时转换该整流信号（14）成为开关信号（15），在并联模式时选择性地转换整流信号（14）成为开关信号（15）。该发光二极体装置（100）可具有有效率的调光控制。调光控制可以是使用相位调光器（13）以控制发光二极体装置（100）的脉冲宽度调制开关。

Description

发光二极体装置
本发明是关于照明领域，且特别是关于发光二极体（Light Emitting Diode, LED）装置的领域。
发光二极体光源具有高发光效率、低发热、省电和寿命长的优点，因此其应用愈来愈广泛。发光二极体灯将逐渐取代如白炽灯和卤素灯等传统照明灯具。随着发光二极体灯的发展，驱使发光二极体灯朝向结构微型化的趋势。目前市场上常见的发光二极体灯驱动电路是在整流输入电压后，使用电解电容来滤波。电路中也需要使用电感和变压器。
由于电解电容体积大，占用了较大的驱动电路空间，驱动电路难以进一步微型化。而且电解电容的寿命受到驱动电路空间的环境温度影响非常大，使得电解电容过早失效，造成整灯的寿命缩短。较大的电感和变压器体积亦造成驱动结构难以微型化。除此之外，有效率的调光控制发光二极体装置是非常重要的现代照明应用。
本发明的其中一个目的是提供一种有效率的发光二极体装置调光控制器。
本发明的另一个目的是提供一种调光控制，其可以使用相位调光器以控制发光二极体装置的脉冲宽度调制（Pulse Width Modulation, PWM）开关。
本发明的再另一个目的是提供一种调光控制，其可帮助发光二极体装置适用于传统相位调光控制。
根据本发明的一个方面，其揭露了一种发光二极体装置，用于接收调整信号。所述调整信号由相位调光器输出，所述相位调光器削减输入信号的一部分相位以输出所述调整信号。发光二极体装置包括第一发光二极体灯串、第二发光二极体灯串、整流模块以及控制单元。整流模块整流调整信号及输出整流信号。控制单元接收整流信号。控制单元将整流信号与预设电压值进行比较。
当整流信号的电压值大于预设电压值时，脉冲宽度调制控制器依据整流信号转换整流信号成为开关信号，控制单元串联连接第一发光二极体灯串及第二发光二极体灯串。
当整流信号的电压值低于预设电压值时，脉冲宽度调制控制器停止转换整流信号成为开关信号，控制单元并联连接第一发光二极体灯串及第二发光二极体灯串。
根据本发明的另一个方面，其揭露了一种发光二极体装置，用于接收一调整信号。所述调整信号由一相位调光器输出，所述相位调光器削减一输入信号的一部分相位以输出所述调整信号。发光二极体装置包括第一发光二极体灯串、第二发光二极体灯串、整流模块以及控制单元。整流模块整流调整信号及输出整流信号。
控制单元接收整流信号。控制单元具有并联模式及串联模式。控制单元包括脉冲宽度调制控制器。脉冲宽度调制控制器根据至少一个由整流信号计算出的参数来产生开关信号。
当控制单元为并联模式时，控制单元并联连接第一发光二极体灯串及第二发光二极体灯。当控制单元为串联模式时，控制单元串联连接第一发光二极体灯串及第二发光二极体灯串。
根据本发明的又另一个方面，其揭露了一种发光二极体装置，用于接收一调整信号。所述调整信号由一相位调光器输出，所述相位调光器削减一输入信号的一部分相位以输出所述调整信号。发光二极体装置包括第一发光二极体灯串、第一脉冲宽度调制晶体管、第二发光二极体灯串、第二脉冲宽度调制晶体管、整流模块以及控制单元。第一脉冲宽度调制晶体管连接至第一发光二极体灯串。第二脉冲宽度调制晶体管连接至第二发光二极体灯串。整流模块整流调整信号及输出整流信号。
控制单元包括脉冲宽度调制控制器及输入电压侦测单元。控制单元接收整流信号。脉冲宽度调制控制器制造脉冲宽度调制信号已控制第一脉冲宽度调制晶体管及第二脉冲宽度调制晶体管。输入电压侦测单元将整流信号及预设电压值做比较。
当整流信号的电压值大于预设电压值时，第一发光二极体灯串及第二发光二极体灯串共用第一脉冲宽度调制晶体管。当整流信号的电压值低于预设电压值时，第一发光二极体灯串及第二发光二极体灯串不共用第一脉冲宽度调制晶体管。
依据上述实施例的发光二极体装置可具有有效率的调光控制。调光控制可以是使用相位调光器以控制发光二极体装置的脉冲宽度调制开关。调光控制可帮助发光二极体装置适用于传统相位调光控制。
 图1
说明一种发光二极体装置的实施例。
图2
说明发光二极体装置的另一个实施例。
图3
说明整流信号和输出电流的波形。
图4
说明当一部分的相位被削减的整流信号和输出电流的波形。
图5
说明当另一个部分的相位被削减时整流信号和输出电流的波形。
图6
说明当另一个部分的相位被削减时整流信号和输出电流的波形。
图7
说明当开关信号被应用时输出电流的例子。
图8
说明当开关信号被应用时另一个输出电流例子。
图9
说明连接发光二极体灯串的脉冲宽度调制晶体管的例子。
下面结合附图与具体实施方式对本发明发光二极管装置作进一步描述。
图1说明一种发光二极体装置的实施例。图2说明发光二极体装置的另一个实施例。图3说明整流信号和输出电流的波形。图4说明当一部分的相位被削减的整流信号和输出电流的波形。图5说明当另一个部分的相位被削减时整流信号和输出电流的波形。图6说明当另一个部分的相位被削减时整流信号和输出电流的波形。图7说明当开关信号被应用时输出电流的例子。图8说明当开关信号被应用时另一个输出电流例子。图9说明连接发光二极体灯串的脉冲宽度调制晶体管的例子。
参考图1及图2，依据一实施例，发光二极体装置100用于接收一调整信号12。所述调整信号12由一相位调光器13输出，所述相位调光器13削减一输入信号11的一部分相位以输出所述调整信号12。所述发光二极体装置100包括第一发光二极体灯串21、第二发光二极体灯串22、整流模块10以及控制单元30。整流模块10整流调整信号12及输出整流信号14。同时参考图4、图5及图6，相位调光器13削减一部分输入信号11的相位及输出整流信号14。控制单元30包括脉冲宽度调制控制器506。控制单元30接收整流信号14。控制单元30将整流信号14与第一预设电压值U1及第二预设电压值U2进行比较。第一发光二极体灯串21具有第一开启电压。第二发光二极体灯串22具有第二开启电压。第一预设电压值U1可以是第一开启电压或第二开启电压中的任一个。第二预设电压值U2至少是第一开启电压和第二开启电压的总和。在一些实施例中，第一开启电压和第二开启电压相同。
参考图1、图2、图3、图4、图5及图6，当整流信号14的电压值大于第一预设电压值U1但低于第二预设电压值U2时，控制单元30并联连接第一发光二极体灯串21及第二发光二极体灯串22。
当整流信号14的电压值大于预设电压值U2时，脉冲宽度调制控制器506依据整流信号14将整流信号14转换成为开关信号15，而控制单元30串联连接第一发光二极体灯串21及第二发光二极体灯串22。
在一些实施例中，当整流信号14的电压值低于第二预设电压值U2时，脉冲宽度调制控制器506停止转换整流信号14成为开关信号15，而控制单元30并联连接第一发光二极体灯串21与第二发光二极体灯串22。开关信号15可以用于实现脉冲宽度调制。
在一些实施例中，相位调光器13是前沿切相调光器。在一些实施例中，相位调光器13是可控硅整流器。在一些实施例中，相位调光器13是TRIAC调光器。在一些实施例中，相位调光器13是后沿切相调光器。在一些实施例中，相位调光器13是MOS调光器。
在一些实施例中，控制单元30还包括开关组合31。在一些实施例中，开关组合31可以是开关组合503。当整流信号14的电压值高于第一预设电压值U1且低于第二预设电压值U2时，开关组合503并联连接第一发光二极体灯串21及第二发光二极体灯串22。当整流信号14的电压值高于第二预设电压值U2时，开关组合503串联连接第一发光二极体灯串21及第二发光二极体灯串22。
在一些实施例中，开关组合31包括第一开关311、第二开关312及第三开关313。参考图1、图2、及图3，当整流信号14的电压值高于第一预设电压值U1且低于第二电压值U2时，第一开关311连接，第二开关312连接，而第三开关313断开，使得第一发光二极体灯串21及第二发光二极体灯串22并联连接。当整流信号14的电压值高于第二预设电压值U2时，第一开关311断开，第二开关312断开，而第三开关313连接，使得第一发光二极体灯串21及第二发光二极体灯串22串联连接。
参考图3，在一些实施例中，当第一发光二极体灯串21及第二发光二极体灯串22并联连接时，控制单元30输出驱动电流I1。当第一发光二极体灯串21及第二发光二极体灯串22串联连接时，控制单元30输出驱动电流I2。在此情形中，由于每一个第一发光二极体灯串21及第二发光二极体灯串22具有相同的定值驱动电流，因此驱动电流I1是两倍的驱动电流I2。
参考图3，当整流信号14低于第一预设电压值U1时，无驱动电流流经第一发光二极体灯串21及第二发光二极体灯串22。因此，当整流信号14的相位的削减部分低于第一预设电压U1时，其不影响发光二极体装置100的亮度。
参考图4，一部分整流信号的上升相位在点401处被相位调光器13削减，形成前沿切相削减效应。点401的电压值高于第一预设电压值U1且低于第二预设电压值。对应的驱动电流也被削减，因此亮度是由整流信号剩余的相位来表示。在一些实施例中，整流信号的平均电压值正比于发光二极体装置100的亮度。
参考图5，一部分整流信号的上升相位在点501被相位调光器13削减，形成前沿切向削减效应。点501的电压值高于第二预设电压值U2。对应的驱动电流也被削减，因此亮度是由整流信号剩余的相位来表示。在一些实施例中，驱动电流的占空比正比于发光二极体装置100的亮度。
参考图6，一部分整流信号的上升相位在点601处被相位调光器13削减，形成前沿切相削减效应。点601的电压值高于第一预设电压值U1且低于第二预设电压值U2。对应的驱动电流也被削减，因此亮度是由整流信号剩余的相位来表示。在一些实施例中，整流信号的平均电压值正比于发光二极体装置的亮度。
参考图1、图2、图3及图4，根据另一实施例，揭露了一种发光二极体装置100，用于接收一调整信号12。所述调整信号12由一相位调光器13输出，所述相位调光器13削减一输入信号11的一部分相位以输出所述调整信号12。所述发光二极体装置100包括第一发光二极体灯串21、第二发光二极体灯串22、整流模块10及控制单元30。
整流模块10整流调整信号12及输出整流信号14。相位调光器13削减部分整流信号12的相位及输出整流信号14。控制单元30接收整流信号14。控制单元30具有并联模式及串联模式。控制单元30包括脉冲宽度调制控制器506。脉冲宽度调制控制器506依据至少由整流信号计算出的一个参数产生开关信号15。
当控制单元30在并联模式时，控制单元30并联连接第一发光二极体灯串21及第二发光二极体灯串22。当控制单元30在串联模式时，控制单元串联连接第一发光二极体灯串21及第二发光二极体灯串22。
在一些实施例中，参数是由整流信号计算出的均方根值。在一些实施例中，参数是由整流信号计算出的平均电压值。在一些实施例中，脉冲宽度调制控制器506只在当控制单元30在串联模式下输出开关信号15。在一些实施例中，脉冲宽度调制控制器506在并联模式及串联模式中皆输出开关信号15。在一些实施例中，开关信号15的占空比和整流信号的占空比相同。
参考图1、图2、图3、图4及图9，根据另一实施例，发光二极体装置用于接收一调整信号12。所述调整信号12由一相位调光器13输出，所述相位调光器13削减一输入信号11的一部分相位以输出所述调整信号12。所述发光二极体装置包括发光二极体灯串21、第一脉冲宽度调制晶体管81、第二发光二极体灯串22、第二脉冲宽度调制晶体管82、整流模块10以及控制单元30。
第一脉冲宽度调制晶体管81连接至第一发光二极体灯串21。第二脉冲宽度调制晶体管82连接至第二发光二极体灯串22。整流模块10整流调整信号12及输出整流信号14。相位调光器13削减一部分整流信号12的相位及输出整流信号14。
控制单元30包括脉冲宽度调制控制器506及输入电压侦测单元502。控制单元30接收整流信号14。脉冲宽度调制控制器506产生脉冲宽度调制信号15以控制第一脉冲宽度调制晶体管81及第二脉冲宽度调制晶体管82。输入信号侦测单元502将整流信号14与第一预设电压值U1及第二预设电压值U2进行比较。
当整流信号14的电压值大于预设电压值U2时，第一发光二极体灯串21及第二发光二极体灯串22共享第一脉冲宽度调制晶体管81。当整流信号14的电压值低于预设电压值U2时，第一发光二极体灯串21及第二发光二极体灯串22不共用第一脉冲宽度调制晶体管81。
在一些实施例中，预设电压值U2是第二预设电压值U2。控制单元30还包括开关组合503。当整流信号14的电压值高于第一预设电压值U1且低于第二预设电压值U2时，开关组合503并联连接第一发光二极体灯串及第二发光二极体灯串。当整流信号的电压值高于第二预设电压值U2时，开关组合503串联连接第一发光二极体灯串21及第二发光二极体灯串21。
在一些实施例中，控制单元30还包括用以产生定值电流给每一个第一发光二极体灯串21及第二发光二极体灯串22的调整模块504。在一些实施例中，控制单元30还包括用以控制输入电压侦测单元502的逻辑电路505、开关组合503及调整模块504。在一些实施例中，脉冲宽度调制控制器根据由整流信号计算出的至少一个参数506产生开关信号15。调整模块504可提供适当的电流值，使得每一个第一发光二极体灯串21及第二发光二极体灯串22无论是在并联模式或串联模式都可具有定值电流。
在一些实施例中，参数是由整流信号计算出的方均根值。在一些实施例中，参数是由整流信号算出的平均电压值。在一些实施例中，开关信号15的占空比和整流信号的占空比相同。在一些实施例中，当整流信号的电压值大于预设电压值U2时，关掉第二脉冲宽度调制晶体管82。
参考图9，在一些实施例中，脉冲宽度调制信号15控制脉冲宽度调制晶体管81、82的开／关状态。因此，可控制流经第一发光二极体灯串21及第二发光二极体灯串22之对应的电流。在一些实施例中，当第一发光二极体灯串21及第二发光二极体灯串并联连接时，两个脉冲宽度调制晶体管81、82用来分别控制两个发光二极体灯串。然而，当第一发光二极体灯串21和第二发光二极体灯串22串联连接時，只有一个脉冲宽度调制晶体管81用来控制驱动电压。在此情形中，第一发光二极体灯串21及第二发光二极体灯串22共用脉冲宽度调制晶体管81。
参考图5及图7，在一些实施例中，只有在控制单元30在串联模式时制造脉冲宽度调制信号15，可产生电流值為I2的切换驱动电流。切换中的驱动电流的占空比正比于发光二极体装置的亮度。
参考图5及图8，在一些实施例中，在串联模式和并联模式下皆产生脉冲宽度调制信号15，可产生电流值I1的切换驱动电流及另一个电流值I2。切换驱动电流的占空比正比于发光二极体装置的亮度。
以上仅为本发明较佳实施例而已，并不用以限制本发明，凡在本发明精神和原则之内，所做的任何修改、同等替换、改进等，均应包含在本发明保护的范围之内。

Claims (20)

  1. 一种发光二极体装置，用于接收一调整信号，所述调整信号由一相位调光器输出，所述相位调光器削减一输入信号的一部分相位以输出所述调整信号，其特征在于，所述发光二极体装置包括：第一发光二极体灯串；第二发光二极体灯串；整流模块，用以整流所述调整信号及输出整流信号；以及控制单元，所述控制单元包括一脉冲宽度调制控制器，所述控制单元接收所述整流信号，所述控制单元将所述整流信号及预设电压值进行比较；其中当整流信号的一电压值大于所述预设电压值时，所述脉冲宽度调制控制器依据所述整流信号转换所述整流信号成为一开关信号，所述控制单元串联连接所述第一发光二极体灯串及所述第二发光二极体灯串；以及其中当所述整流信号的所述电压值低于所述预设电压值时，所述脉冲宽度调制控制器停止转换所述整流信号成为所述开关信号，所述控制单元并联连接所述第一发光二极体灯串及所述第二发光二极体灯串。
  2. 如权利要求1所述的发光二极体装置，其特征在于，其中所述相位调光器是前沿切相调光器。
  3. 如权利要求1所述的发光二极体装置，其特征在于，其中所述相位调光器是后沿切相调光器。
  4. 如权利要求1所述的发光二极体装置，其特征在于，其中所述预设电压值是一第二预设电压值，所述控制单元还包括一开关组合，当所述整流信号的电压值高于第一预设电压值且低于所述第二预设电压值时，所述开关组合并联连接所述第一发光二极体灯串及所述第二发光二极体灯串，而当所述整流信号的所述电压值高于所述第二预设电压值时，所述开关组合串联连接所述第一发光二极体灯串及所述第二发光二极体灯串。
  5. 如权利要求4所述的发光二极体装置，其特征在于，其中所述开关组合包括第一开关、第二开关及第三开关，当所述整流信号的所述电压值高于所述第一预设电压值时，所述第一开关连接，所述第二开关连接，且所述第三开关断开，使得所述第一发光二极体灯串及所述第二发光二极体灯串并联连接，而当所述整流信号的所述电压值高于所述第二预设电压值时，所述第一开关断开，所述第二开关断开，且所述第三开关连接，使得所述第一发光二极体灯串及所述第二发光二极体灯串串联连接。
  6. 一种发光二极体装置，用于接收一调整信号，所述调整信号由一相位调光器输出，所述相位调光器削减一输入信号的一部分相位以输出所述调整信号，其特征在于，包括：第一发光二极体灯串；第二发光二极体灯串；整流模块，用以整流所述调整信号及输出整流信号；以及控制单元，所述控制单元接收所述整流信号，所述控制单元具有一并联模式及一串联模式，所述控制单元包括一脉冲宽度调制控制器，所述脉冲宽度调制控制器根据由所述整流信号计算出的至少一参数产生一开关信号；其中当所述控制单元在所述并联模式时，所述控制单元并联连接所述第一发光二极体灯串及所述第二发光二极体灯串，且当所述控制单元在所述串联模式时，所述控制单元串联连接所述第一发光二极体灯串及所述第二发光二极体灯串。
  7. 如权利要求6所述的发光二极体装置，其特征在于，其中所述参数是由所述整流信号计算出的一方均根值。
  8. 如权利要求6所述的发光二极体装置，其特征在于，其中所述参数是由所述整流信号计算出的一平均电压值。
  9. 如权利要求6所述的发光二极体装置，其特征在于，其中所述脉冲宽度调制控制器只有当所述控制单元在所述串联模式时输出所述开关信号。
  10. 如权利要求6所述的发光二极体装置，其特征在于，其中所述脉冲宽度调制控制器在所述并联模式及所述串联模式时皆输出所述开关信号。
  11. 如权利要求6所述的发光二极体装置，其特征在于，其中所述开关信号的占空比与所述整流信号的一占空比相同。
  12. 一种发光二极体装置，用于接收一调整信号，所述调整信号由一相位调光器输出，所述相位调光器削减一输入信号的一部分相位以输出所述调整信号，其特征在于，包括：第一发光二极体灯串；第一脉冲宽度调制晶体管连接至所述第一发光二极体灯串；第二发光二极体灯串；第二脉冲宽度调制晶体管连接至所述第二发光二极体灯串；整流模块，用以整流所述调整信号及输出一整流信号；以及控制单元，所述控制单元包括脉冲宽度调制控制器及输入电压侦测单元，所述控制单元接收所述整流信号，所述脉冲宽度调制控制器产生脉冲宽度调制信号以控制所述第一脉冲宽度调制晶体管及所述第二脉冲宽度调制晶体管，所述输入电压侦测单元将所述整流信号及所述预设电压值做比较；其中当所述整流信号的一电压值大于所述预设电压值时，所述第一发光二极体灯串及所述第二发光二极体灯串共用所述第一脉冲宽度调制晶体管；以及其中当所述整流信号的所述电压值低于所述预设电压值时，所述第一发光二极体灯串及所述第二发光二极体灯串不共用所述第一脉冲宽度调制晶体管。
  13. 如权利要求12所述的发光二极体装置，其特征在于，其中所述预设电压值是一第二预设电压值，所述控制单元还包括一开关组合，当所述整流信号的所述电压值高于一第一预设电压值且低于所述第二预设电压值时，所述开关组合并联连接所述第一发光二极体灯串及所述第二发光二极体灯串，当所述整流信号的所述电压值高于所述第二预设电压值时，所述开关组合串联连接所述第一发光二极体灯串及所述第二发光二极体灯串。
  14. 如权利要求13所述的发光二极体装置，其特征在于，其中所述控制单元还包括一调节模块，用以产生一定值电流给每一个所述第一发光二极体灯串及所述第二发光二极体灯串。
  15. 如权利要求13所述的发光二极体装置，其特征在于，其中所述控制单元还包括逻辑电路，用以控制所述输入电压侦测单元、所述开关组合及所述调整模块。
  16. 如权利要求12所述的发光二极体装置，其特征在于，其中所述脉冲宽度调制控制器根据由所述整流信号计算出的至少一参数产生所述开关信号。
  17. 如权利要求16所述的发光二极体装置，其特征在于，其中所述参数是由所述调整信号计算出的一方均根值。
  18. 如权利要求16所述的发光二极体装置，其特征在于，其中所述参数是由所述调整信号计算出的平均电压值。
  19. 如权利要求16所述的发光二极体装置，其特征在于，其中所述开关信号的占空比和所述整流信号的占空比相同。
  20. 如权利要求16所述的发光二极体装置，其特征在于，其中当所述整流信号的所述电压值大于所述预设电压值时，关掉所述第二脉冲宽度调制晶体管。
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US20210207777A1 (en) 2021-07-08
US20190195436A1 (en) 2019-06-27
EP3312505A1 (en) 2018-04-25
US10253931B2 (en) 2019-04-09
EP3312505B1 (en) 2021-08-11
US10760744B2 (en) 2020-09-01
US20200347998A1 (en) 2020-11-05

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