WO2015145506A1 - Dispositif d'éclairage à led - Google Patents

Dispositif d'éclairage à led Download PDF

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Publication number
WO2015145506A1
WO2015145506A1 PCT/JP2014/006052 JP2014006052W WO2015145506A1 WO 2015145506 A1 WO2015145506 A1 WO 2015145506A1 JP 2014006052 W JP2014006052 W JP 2014006052W WO 2015145506 A1 WO2015145506 A1 WO 2015145506A1
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WO
WIPO (PCT)
Prior art keywords
dimmer
voltage
state
led lighting
lighting device
Prior art date
Application number
PCT/JP2014/006052
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English (en)
Japanese (ja)
Inventor
末広　善文
林　雅則
Original Assignee
パナソニックＩｐマネジメント株式会社
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Publication of WO2015145506A1 publication Critical patent/WO2015145506A1/fr

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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]
    • H05B45/10—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
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/38—Switched mode power supply [SMPS] using boost topology
    • 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
    • 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]
    • 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
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/375—Switched mode power supply [SMPS] using buck topology
    • 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 present invention generally relates to a light emitting diode (LED) lighting device, and more particularly to an LED lighting device provided with an LED as a light source.
  • LED light emitting diode
  • the illumination load comprises an illumination light source such as an LED.
  • the illumination power supply is connected to an AC power supply via a dimmer.
  • the dimmer can adjust the conduction period of phase control in an alternating voltage.
  • the illumination power supply includes a rectifier circuit.
  • the rectifier circuit receives an AC voltage phase-controlled by the dimmer.
  • a capacitor for reducing high frequency noise is connected to the input side of the rectifier circuit.
  • the dimmer which carries out order phase control of alternating current voltage (following, 1st dimmer), The dimmer which carries out reverse phase control of alternating current voltage (following, 2nd dimmer) And are known.
  • the first dimmer goes from the on state to the off state when the absolute value of the AC voltage is zero.
  • the second dimmer goes from the on state to the off state when the absolute value of the AC voltage is other than zero.
  • condenser is connected to the input side of the rectifier circuit in the power supply for illuminations. Therefore, in the lighting device, when the second dimmer is connected, when the second dimmer changes from the conductive state to the cut-off state, charge may be accumulated in the capacitor. Therefore, in the lighting device, when the second dimmer is connected, the light output of the illumination light source may be larger than when the first dimmer is connected. In other words, in the lighting device, it is difficult to make the change in the light output of the illumination light source by the first dimmer the same as the change in the light output of the illumination light source by the second dimmer.
  • the object of the present invention is to change the light output of the light source unit by the first dimmer that controls the AC voltage in the order phase, and change the light output of the light source unit by the second dimmer that controls the AC voltage in the reverse phase. It is in providing the LED lighting apparatus which can be made the same.
  • the LED lighting device of the present invention comprises a pair of terminals, a diode bridge for full-wave rectification of alternating current voltage, and a conversion unit for converting the voltage full-wave rectified by the diode bridge into a predetermined direct current voltage or a predetermined direct current Is equipped.
  • the LED lighting apparatus of this invention is equipped with the light source part which can be lighted with the said predetermined
  • the LED lighting device of the present invention includes a power supply unit that generates a first DC voltage from the voltage that is full-wave rectified by the diode bridge and supplies the first DC voltage to the control circuit.
  • the light source unit includes an LED.
  • the pair of input ends of the diode bridge are respectively connected to the pair of terminals.
  • a capacitor for removing noise is connected between the pair of input terminals.
  • a normally-off switching element is connected in parallel to the diode bridge.
  • the control circuit is configured such that, when a series circuit of an AC power supply that outputs the AC voltage and the dimmer is connected between the pair of terminals, the dimmer detects that the absolute value of the AC voltage is zero. It is determined whether the first dimmer performs phase control from the on state to the off state or the second dimmer performs phase control from the on state to the off state when the absolute value of the AC voltage is other than zero. And a second function that determines whether the dimmer is in the on state or the off state. The control circuit determines that the dimmer is the second dimmer by the determining unit, and determines that the dimmer has been switched from the on state to the off state by the determining unit. The switching element is turned on.
  • FIG. 2 is a circuit diagram of the LED lighting device of Embodiment 1.
  • FIG. FIG. 2 is a circuit diagram of a resistive voltage dividing circuit and a control circuit in the LED lighting device of Embodiment 1.
  • FIG. 7 is a diagram showing a first reference waveform stored in advance in the control circuit in the LED lighting device of Embodiment 1.
  • FIG. 7 is a diagram showing a second reference waveform stored in advance in the control circuit in the LED lighting device of Embodiment 1. It is a figure which shows the voltage waveform of the input voltage of LED lighting apparatus, and the current waveform of the input current of LED lighting apparatus regarding the case where a switching element is in an OFF state in the LED lighting apparatus of Embodiment 1.
  • FIG. 1 It is a figure which shows the voltage waveform of the input voltage of LED lighting apparatus, and the current waveform of the input current of LED lighting apparatus regarding the case where a switching element is in an OFF state in the LED lighting apparatus of Embodiment 1.
  • FIG. 2nd DC voltage It is a figure which shows the voltage waveform of 2nd DC voltage, and the voltage waveform of the voltage differentiated by the differential circuit regarding the case where a switching element is in an OFF state in the LED lighting apparatus of Embodiment 1.
  • FIG. 2 is a schematic side view partially broken in the LED lighting device of Embodiment 1; 5 is a circuit diagram of an LED lighting device of Embodiment 2.
  • FIG. 2 is a schematic side view partially broken in the LED lighting device of Embodiment 1; 5 is a circuit diagram of an LED lighting device of Embodiment 2.
  • phase control from the conducting state to the blocking state when the absolute value of the AC voltage is zero is referred to as order phase control.
  • the phase control from the conducting state to the blocking state when the absolute value of the AC voltage is other than zero is called reverse phase control.
  • the LED lighting device 10 includes a pair of terminals 1 and 2, a diode bridge 3 for full-wave rectification of alternating current voltage, and a conversion unit 4 for converting the voltage full-wave rectified by the diode bridge 3 into a predetermined direct current voltage ing.
  • the LED lighting device 10 includes a light source unit 5 that can be lit by the predetermined DC voltage, a control circuit 6 that controls the conversion unit 4, and a power supply unit 7 that supplies power to the control circuit 6.
  • the LED lighting device 10 can electrically connect a series circuit of an AC power supply 20 that outputs an AC voltage and a dimmer 21 that dims the LED lighting device 10 between a pair of terminals 1 and 2 .
  • the alternating current power supply 20 is, for example, a commercial power supply.
  • the LED lighting device 10 does not include the AC power supply 20 and the dimmer 21 as constituent requirements. Also, in the following, for convenience of explanation, one of the terminals 1 and 2 of the pair of terminals 1 and 2 is referred to as "first input terminal 1", and the other terminal 2 is referred to as "second input terminal 2".
  • the diode bridge 3 includes four diodes D1 to D4.
  • a first connection point between the cathode of the diode D1 and the anode of the diode D2 is electrically connected to the first input terminal 1.
  • a second connection point between the cathode of the diode D3 and the anode of the diode D4 is electrically connected to the second input terminal 2.
  • the first connection point and the second connection point correspond to a pair of input ends of the diode bridge 3. In short, the pair of input ends of the diode bridge 3 are connected to the pair of terminals 1 and 2 respectively.
  • a capacitor C1 for removing noise is electrically connected between the pair of input ends of the diode bridge 3.
  • the normally-off switching element Q1 is connected in parallel to the diode bridge 3. Specifically, the switching element Q1 is electrically connected between the pair of output ends of the diode bridge 3.
  • the switching element Q1 is, for example, a normally-off n-channel MOSFET (Metal Oxide Semiconductor Field Effect Transistor).
  • the first main terminal (the drain terminal in the present embodiment) of the switching element Q1 is electrically connected to one of the pair of output ends of the diode bridge 3.
  • the second main terminal (the source terminal in the present embodiment) of the switching element Q1 is electrically connected to the other output end of the pair of output ends of the diode bridge 3.
  • a control terminal (a gate terminal in the present embodiment) of the switching element Q1 is electrically connected to the control circuit 6.
  • the conversion unit 4 is configured to convert the voltage full-wave rectified by the diode bridge 3 into the predetermined DC voltage. Further, the conversion unit 4 is configured to output the predetermined DC voltage to the light source unit 5.
  • the conversion unit 4 is, for example, a booster circuit. Thus, the conversion unit 4 can light the light source unit 5.
  • the LED lighting apparatus 10 uses a booster circuit as the conversion part 4, it does not restrict to this.
  • the conversion unit 4 may be, for example, a step-down circuit, a step-up / step-down circuit, or the like.
  • the converter 4 is configured to convert the voltage full-wave rectified by the diode bridge 3 into the predetermined DC voltage
  • the present invention is not limited to this configuration.
  • the conversion unit 4 may be configured to convert the voltage full-wave rectified by the diode bridge 3 into a predetermined direct current. In this case, the conversion unit 4 is, for example, a constant current circuit.
  • the light source unit 5 includes a plurality of LEDs 9 (see FIG. 11).
  • the LED 9 is, for example, an LED chip.
  • the number of LED9 is made into multiple, one may be sufficient.
  • the control circuit 6 is, for example, a microcomputer equipped with a program.
  • the program is stored, for example, in a memory provided in advance in the microcomputer.
  • the LED lighting apparatus 10 uses the microcomputer as the control circuit 6, it is not restricted to this.
  • the control circuit 6 may be configured by combining discrete components, for example.
  • the power supply unit 7 is configured to generate a first DC voltage from the voltage full-wave rectified by the diode bridge 3. Further, the power supply unit 7 is configured to supply the first direct current voltage to the control circuit 6.
  • the power supply unit 7 is, for example, a three-terminal regulator. The input terminal of the three-terminal regulator is electrically connected to the one output terminal of the diode bridge 3. The output terminal of the three-terminal regulator is electrically connected to the control circuit 6. The ground terminal of the three-terminal regulator is electrically connected to the ground of the LED lighting device 10.
  • the power supply unit 7 can generate the first direct current voltage from the voltage full-wave rectified by the diode bridge 3 and supply the first direct current voltage to the control circuit 6.
  • the power supply unit 7 may be, for example, a DC-DC converter.
  • the control circuit 6 is configured to receive a second DC voltage V1 corresponding to the voltage full-wave rectified by the diode bridge 3.
  • the LED lighting device 10 includes a resistive voltage divider circuit 23.
  • the resistive voltage divider circuit 23 is a series circuit of a resistor R1 and a resistor R2.
  • One end of the resistor R 1 is electrically connected to the one output end of the diode bridge 3.
  • the other end of the resistor R1 is electrically connected to one end of the resistor R2.
  • one end of the resistor R2 is electrically connected to the control circuit 6.
  • the other end of the resistor R2 is electrically connected to the ground of the LED lighting device 10.
  • a voltage (voltage across the resistor R2) obtained by dividing the voltage that has been full-wave rectified by the diode bridge 3 by the resistor voltage dividing circuit 23 is input to the control circuit 6.
  • the control circuit 6 receives the second DC voltage V1 corresponding to the voltage full-wave rectified by the diode bridge 3. That is, in the LED lighting device 10, the voltage across the resistor R2 corresponds to the second DC voltage V1.
  • the control circuit 6 includes a differentiating circuit 13 that differentiates the second DC voltage V1.
  • the differentiating circuit 13 can be configured, for example, by an operational amplifier, a resistor and a capacitor.
  • control circuit 6 has a first function of determining whether the dimmer 21 is the first dimmer that controls the AC voltage in the order phase or the second dimmer that controls the AC voltage in the reverse phase. And a second function to determine whether the dimmer 21 is in the on state or in the off state.
  • the dimmer 21 is in the conductive state, it means that the opening / closing portion provided in advance in the dimmer 21 is in the on state.
  • the dimmer 21 is in the cut off state, it means that the opening / closing portion of the dimmer 21 is in the off state.
  • the switching unit is connected in series to the AC power supply 20.
  • the opening / closing unit is, for example, a bidirectional thyristor.
  • the switching unit is, for example, a MOSFET, an IGBT (Insulated Gate Bipolar Transistor), or the like.
  • the determination unit 8 determines whether the dimmer 21 is the first dimmer or the second dimmer, the first determination unit 11 determines whether the dimmer 21 is in the on state or the off state. And a second determination unit 12 that determines whether the
  • the first determination unit 11 is configured to determine whether the dimmer 21 is the first dimmer or the second dimmer based on the waveform of the second DC voltage V1. .
  • the first determination unit 11 determines whether the dimmer 21 is the first dimmer based on the degree of coincidence between the waveform of the second DC voltage V1 and the first reference waveform (see FIG. 3) stored in advance. It is comprised so that it may determine whether or not.
  • the first determination unit 11 is configured, for example, by combining an arithmetic circuit provided in advance in the microcomputer and the program.
  • the first reference waveform is a voltage waveform when the dimmer 21 is a first dimmer.
  • the first reference waveform is stored in the memory.
  • the vertical axis in FIG. 3 represents a voltage.
  • the horizontal axis of FIG. 3 represents time.
  • the first determination unit 11 uses the second dimmer as the dimmer 21 based on the degree of coincidence between the waveform of the second DC voltage V1 and the second reference waveform (see FIG. 4) stored in advance. It is configured to determine whether there is any.
  • the second reference waveform is a voltage waveform when the dimmer 21 is a second dimmer.
  • the second reference waveform is stored in the memory.
  • the vertical axis in FIG. 4 represents a voltage.
  • the horizontal axis of FIG. 4 represents time.
  • the first determination unit 11 determines whether the dimmer 21 is the first dimmer based on the degree of coincidence between the waveform of the second DC voltage V1 and the first reference waveform. Although it is comprised so that judgment may be carried out, it does not restrict to this. Moreover, in the LED lighting device 10, the first determination unit 11 determines whether the dimmer 21 is the second dimmer based on the degree of coincidence between the waveform of the second DC voltage V1 and the second reference waveform. Although it is comprised so that it may determine, it does not restrict to this. The first determination unit 11 determines whether the dimmer 21 is the first dimmer or the second dimmer based on the degree of coincidence between the waveform of the second DC voltage V1 and the first reference waveform.
  • the first determination unit 11 determines whether the dimmer 21 is the first dimmer or the second dimmer based on the degree of coincidence between the waveform of the second DC voltage V1 and the second reference waveform. It may be configured to determine whether there is any.
  • the second determination unit 12 is configured to determine whether the dimmer 21 is in the on state or in the off state based on the second DC voltage V1.
  • the second determination unit 12 It is comprised so that it may determine with 21 having become the interruption
  • the second determination unit 12 is, for example, a determination circuit provided in advance in the microcomputer.
  • T10 in FIG. 7 represents the point in time when the dimmer 21 is switched from the on state to the off state. Further, t11 in FIG. 7 represents a point in time when the voltage value of the voltage V2 becomes equal to or less than the threshold value Vth.
  • the first determination unit 11 determines that the dimmer 21 is the second dimmer, and the second determination unit 12 determines that the dimmer 21 is switched off from the conductive state.
  • the switching element Q1 is turned on.
  • the determination unit 8 determines that the dimmer 21 is the second dimmer, and the determination unit 8 determines that the dimmer 21 is switched from the conductive state to the disconnected state.
  • the switching element Q1 is turned on.
  • the inventors of the present application considered an LED lighting device (hereinafter, referred to as an LED lighting device of a comparative example) provided with a control circuit different from the control circuit 6.
  • symbol is attached
  • the control circuit 6 in the LED lighting device 10 may be referred to as "first control circuit 6"
  • the control circuit in the LED lighting device of the comparative example may be referred to as "second control circuit”.
  • the present inventors connected a first dimmer as the dimmer 21 between the pair of terminals 1 and 2 and a second dimmer as the dimmer 21. Device was considered to be connected.
  • the second control circuit keeps the switching element Q1 in the off state regardless of whether the dimmer 21 is the first dimmer or the second dimmer and the dimmer 21 is in the on state or the off state. It is configured to
  • the voltage waveform of the input voltage V3 in the LED lighting device of the comparative example and the current waveform of the input current I1 in the LED lighting device of the comparative example Is shown in FIG. T1 and t3 in FIG. 5 represent the time when the dimmer 21 is switched from the disconnection state to the conduction state.
  • T2 and t4 in FIG. 5 represent the time when the dimmer 21 is switched from the on state to the off state.
  • the voltage waveform of the input voltage V3 in the LED lighting device of the comparative example and the current of the input current I1 in the LED lighting device of the comparative example represent the time when the dimmer 21 is switched from the on state to the off state.
  • T6 and t9 in FIG. 6 represent the time when the charge stored in advance in the capacitor C1 in the LED lighting device of the comparative example is discharged.
  • T7 in FIG. 6 represents the point in time when the dimmer 21 becomes conductive from the cutoff state.
  • the relationship between the conduction angle by the dimmer 21 and the light output of the light source unit 5 as shown in FIG. 8 is obtained.
  • the vertical axis in FIG. 8 represents the magnitude of the light output of the light source unit 5.
  • the horizontal axis in FIG. 8 represents the magnitude of the conduction angle by the dimmer 21.
  • the curve shown by the solid line in FIG. 8 represents the case where the dimmer 21 is a second dimmer.
  • a curve indicated by an alternate long and short dash line in FIG. 8 represents the case where the dimmer 21 is the first dimmer.
  • the light output of the light source unit 5 when the dimmer 21 is the second dimmer in the LED lighting device of the comparative example is, as shown in FIG. 8, the minimum value and the maximum value of the conduction angle by the dimmer 21 respectively.
  • the light output of the light source unit 5 corresponding to the light source unit 5 is larger than the light output of the light source unit 5 when the dimmer 21 excluding the light output of the light source unit 5 is the first light controller.
  • charge is accumulated in the capacitor C1 in the LED lighting device of the comparative example even when the dimmer 21 is switched from the conduction state to the cutoff state. It may have been.
  • the electric charge accumulated in the capacitor C1 may be supplied to the light source unit 5, and the light output of the light source unit 5 is set to, for example, the light source unit 5 set by the dimmer 21. May be greater than the light output of the Therefore, in the LED lighting device of the comparative example, it is difficult to make the change of the light output of the light source unit 5 by the first dimmer the same as the light output of the light source unit 5 by the second dimmer.
  • the determination unit 8 determines that the dimmer 21 is the second dimmer, and the determination unit 8 changes the dimmer 21 from the conduction state to the disconnection state.
  • the switching element Q1 is turned on.
  • T12 and t14 in FIG. 9 represent the time when the dimmer 21 is switched from the on state to the off state.
  • T13 in FIG. 9 represents the time when the dimmer 21 is switched from the cutoff state to the conductive state.
  • the relationship between the conduction angle by the dimmer 21 and the light output of the light source unit 5 as shown in FIG. 10 is obtained.
  • the vertical axis in FIG. 10 represents the magnitude of the light output of the light source unit 5.
  • the horizontal axis in FIG. 10 represents the magnitude of the conduction angle of the dimmer 21.
  • the curve indicated by the solid line in FIG. 10 represents the case where the dimmer 21 is the first dimmer and the case where the dimmer 21 is the second dimmer.
  • the light output of the light source unit 5 when the dimmer 21 is the second dimmer in the LED lighting device 10 is, as shown in FIG. 10, the dimmer as the conduction angle by the dimmer 21 increases. It changes in the same manner as the change of the light output of the light source unit 5 in the case where 21 is the first dimmer.
  • the LED lighting device 10 is, for example, an LED bulb as shown in FIG.
  • the LED lighting apparatus 10 includes a module substrate including a pair of terminals 1 and 2, a capacitor C 1, a diode bridge 3, a switching element Q 1, a resistance voltage dividing circuit 23, a conversion unit 4, a control circuit 6 and a power supply unit 7. .
  • the LED lighting device 10 includes a housing 15 for housing a module substrate, a base 16, a light source unit 5 attached to one surface of the housing 15, and a globe 17 for diffusing light emitted from the light source unit 5. Is equipped. Note that A1 in FIG. 11 represents an area in which the module substrate is disposed.
  • the module substrate includes a pair of terminals 1 and 2, a capacitor C 1, a diode bridge 3, a switching element Q 1, a resistance voltage dividing circuit 23, a conversion unit 4, a control circuit 6 and a power supply unit 7 on a printed circuit board on which a conductor pattern is formed. Are electrically mounted.
  • the material of the housing 15 is, for example, a material having a high thermal conductivity compared to a resin.
  • the material having high thermal conductivity compared to resin is, for example, aluminum.
  • the light source unit 5 includes a plurality of LEDs 9, a metal base printed wiring board 18 on which the plurality of LEDs 9 are electrically mounted, and a fluorescent member 19 covering the plurality of LEDs 9.
  • the emission color of the light source unit 5 is, for example, white.
  • Each LED 9 is, for example, an LED chip that emits blue light.
  • the connection relationship of each LED 9 may be, for example, a series connection, a parallel connection, a connection combining a series connection and a parallel connection, or the like.
  • the metal base printed wiring board 18 is thermally coupled to the housing 15 via the heat dissipating sheet having electrical insulation and thermal conductivity on the one surface of the housing 15.
  • the fluorescent member 19 is formed of, for example, a mixture of a yellow phosphor that is excited by blue light emitted from each of the LEDs 9 and emits broad yellow light and a translucent resin (hereinafter, first resin).
  • the first resin is, for example, a silicone resin.
  • the material of the globe 17 is, for example, a translucent material.
  • the translucent material may be, for example, a translucent resin (hereinafter, second resin), glass, or the like.
  • the second resin is, for example, an acrylic resin.
  • the LED lighting apparatus 10 may be, for example, an LED lighting apparatus including an LED light bulb and a tool body that holds the LED light bulb.
  • the LED lighting apparatus is, for example, a ceiling light.
  • the LED lighting device 10 includes the pair of terminals 1 and 2, the diode bridge 3 for full-wave rectification of alternating current voltage, and the voltage full-wave rectified by the diode bridge 3 to a predetermined direct voltage or And a converter 4 for converting the current into a direct current. Further, the LED lighting device 10 includes a light source unit 5 that can be lit by the predetermined DC voltage converted by the conversion unit 4 or the predetermined DC current, and a control circuit 6 that controls the conversion unit 4. Furthermore, the LED lighting device 10 includes a power supply unit 7 that generates a first DC voltage from the voltage full-wave rectified by the diode bridge 3 and supplies the first DC voltage to the control circuit 6.
  • the light source unit 5 includes an LED 9.
  • the pair of input ends of the diode bridge 3 are connected to the pair of terminals 1 and 2 respectively.
  • a capacitor C1 for removing noise is connected between the pair of input terminals.
  • the normally-off switching element Q1 is connected in parallel to the diode bridge 3.
  • the control circuit 6 is configured such that when the series circuit of the AC power supply 20 for outputting the AC voltage and the dimmer 21 is connected between the pair of terminals 1 and 2, the dimmer 21 has an absolute value of the AC voltage.
  • the first dimmer performs phase control from the conducting state to the blocking state when it is zero
  • the second dimmer performs phase control from the conducting state to the blocking state when the absolute value of the AC voltage is other than zero.
  • the determination unit 8 is provided with a first function of determining presence or absence and a second function of determining whether the dimmer 21 is in the on state or in the off state.
  • the switching element Q1 is turned on.
  • the control circuit 6 is configured to receive a second DC voltage V1 corresponding to the voltage full-wave rectified by the diode bridge 3.
  • the determination unit 8 determines whether the dimmer 21 is the first dimmer or the second dimmer, the first determination unit 11 determines whether the dimmer 21 is in the on state and the off state. And a second determination unit 12 that determines which of the two.
  • the first determination unit 11 is configured to determine whether the dimmer 21 is the first dimmer or the second dimmer based on the waveform of the second DC voltage V1.
  • the second determination unit 12 is configured to determine whether the dimmer 21 is in the on state or in the off state based on the second DC voltage V1.
  • the control circuit 6 determines that the first determination unit 11 determines that the dimmer 21 is the second dimmer, and the second determination unit 12 determines that the dimmer 21 has been switched off from the conductive state. When it is turned on, the switching element Q1 is turned on. Thereby, in the LED lighting device 10, the change of the light output of the light source unit 5 by the first dimmer that controls the AC voltage in the order phase, and the light of the light source unit 5 by the second dimmer that controls the AC voltage in reverse phase It is possible to make the output change the same.
  • the control circuit 6 includes a differentiating circuit 13 that differentiates the second DC voltage V1.
  • the second determination unit 12 starts the dimmer 21 from the conductive state. It is comprised so that it may determine with having become the interruption
  • the switching element Q1 is connected between a pair of output ends of the diode bridge 3.
  • a normally-off n-channel MOSFET can be used as the switching element Q1.
  • the switching element Q1 is a normally-off n-channel MOSFET.
  • the first main terminal (the drain terminal in the present embodiment) of the switching element Q1 is connected to one of the pair of output ends of the diode bridge 3.
  • the second main terminal (the source terminal in the present embodiment) of the switching element Q1 is connected to the other one of the pair of output terminals.
  • a control terminal (in the present embodiment, a gate terminal) of the switching element Q1 is connected to the control circuit 6.
  • the basic configuration of the LED lighting device 30 according to the present embodiment is the same as that of the LED lighting device 10 according to the first embodiment, and the switching element Q2 is connected between a pair of input ends of the diode bridge 3 as shown in FIG. Is different from the first embodiment.
  • symbol is attached
  • the switching element Q 2 includes a light emitting diode 14 and a photo triac 22.
  • the switching element Q2 is configured such that the light emitting diode 14 and the photo triac 22 are optically coupled.
  • a photo triac coupler for example, product number APT1221 manufactured by Panasonic Corporation may be used.
  • the anode of the light emitting diode 14 is electrically connected to the control circuit 6.
  • the cathode of the light emitting diode 14 is electrically connected to the other output end of the diode bridge 3. In short, the cathode of the light emitting diode 14 is connected to the low potential side of the pair of output ends of the diode bridge 3.
  • the first main terminal of the photo triac 22 is electrically connected to the one input end of the diode bridge 3.
  • the second main terminal of the photo triac 22 is electrically connected to the other input end of the diode bridge 3.
  • the control circuit 6 emits light when the determination unit 8 determines that the dimmer 21 is the second dimmer and the determination unit 8 determines that the dimmer 21 has changed from the on state to the off state.
  • a light emission signal for causing the diode 14 to emit light is output to the light emitting diode 14.
  • the switching element Q2 when the light emitting diode 14 emits light, the photo triac 22 is switched from the off state to the on state.
  • the LED lighting device 30 when the dimmer 21 which is the second dimmer changes from the conductive state to the cut-off state, it is possible to discharge the charge stored in advance in the capacitor C1.
  • the charge stored in advance in the capacitor C1 is discharged via the switching element Q2 when the switching element Q2 is turned on from the off state.
  • the switching element Q 2 is connected between the pair of input ends of the diode bridge 3.
  • the switching element Q 2 includes a light emitting diode 14 and a photo triac 22.
  • the switching element Q2 is configured such that the light emitting diode 14 and the photo triac 22 are optically coupled.
  • the anode of the light emitting diode 14 is connected to the control circuit 6.
  • the cathode of the light emitting diode 14 is connected to the low potential side (the other output end of the diode bridge 3) of the pair of output ends of the diode bridge 3.
  • the first main terminal of the photo triac 22 is connected to one of the pair of input ends of the diode bridge 3.
  • the second main terminal of the photo triac 22 is connected to the other one of the pair of input terminals.

Landscapes

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

Abstract

La présente invention a pour objectif de permettre d'égaliser le changement de la sortie optique d'une source de lumière engendré par un premier gradateur qui effectue une commande de phase avancée d'une tension CA et le changement de la sortie optique d'une source de lumière engendré par un deuxième gradateur qui effectue une commande de phase inverse d'une tension CA. Le dispositif d'éclairage LED (10) selon l'invention est doté d'une paire de bornes (1, 2), d'un pont à diodes (3), d'une unité de conversion (4), d'une unité source de lumière (5), d'un circuit de commande (6) et d'une unité source d'énergie (7). Le circuit de commande (6) est doté d'une unité de détermination (8) qui a une première fonction permettant de déterminer si un gradateur (21) est un premier gradateur qui effectue la commande de phase de la tension CA ou un deuxième gradateur qui effectue la commande de phase de la tension CA, et une deuxième fonction permettant de déterminer si le gradateur (21) est dans un état conducteur ou un état coupé.
PCT/JP2014/006052 2014-03-24 2014-12-04 Dispositif d'éclairage à led WO2015145506A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-060933 2014-03-24
JP2014060933A JP2015185380A (ja) 2014-03-24 2014-03-24 Ｌｅｄ照明装置

Publications (1)

Publication Number Publication Date
WO2015145506A1 true WO2015145506A1 (fr) 2015-10-01

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Application Number Title Priority Date Filing Date
PCT/JP2014/006052 WO2015145506A1 (fr) 2014-03-24 2014-12-04 Dispositif d'éclairage à led

Country Status (3)

Country Link
JP (1) JP2015185380A (fr)
TW (1) TW201547327A (fr)
WO (1) WO2015145506A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013149498A (ja) * 2012-01-19 2013-08-01 Toshiba Lighting & Technology Corp 調光装置
JP2014026883A (ja) * 2012-07-27 2014-02-06 Toshiba Lighting & Technology Corp インタフェース回路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013149498A (ja) * 2012-01-19 2013-08-01 Toshiba Lighting & Technology Corp 調光装置
JP2014026883A (ja) * 2012-07-27 2014-02-06 Toshiba Lighting & Technology Corp インタフェース回路

Also Published As

Publication number Publication date
TW201547327A (zh) 2015-12-16
JP2015185380A (ja) 2015-10-22

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