WO2014171015A1 - ランプ駆動電源、および、ランプ駆動電源の制御方法 - Google Patents
ランプ駆動電源、および、ランプ駆動電源の制御方法 Download PDFInfo
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- WO2014171015A1 WO2014171015A1 PCT/JP2013/061668 JP2013061668W WO2014171015A1 WO 2014171015 A1 WO2014171015 A1 WO 2014171015A1 JP 2013061668 W JP2013061668 W JP 2013061668W WO 2014171015 A1 WO2014171015 A1 WO 2014171015A1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- the present invention relates to a lamp driving power source and a method for controlling the lamp driving power source.
- LED (Light Emitting Diode) lamps can be driven at a low voltage and have longer life, lower power consumption, faster reaction speed, and higher impact resistance than filament lamps (bulb lamps). Therefore, the size and weight can be reduced.
- the LED lamp can be suitably used for, for example, a vehicle headlamp.
- LED lamp driving device for example, there is an LED lighting control device as disclosed in JP 2012-160413 A.
- the LED lighting control device described in Japanese Patent Application Laid-Open No. 2012-160413 can detect an LED open error with a simple circuit configuration and determine an LED voltage that does not cause the LED open error.
- the LED lamp lighting device lights up when the voltage applied to the LED lamp lighting device is maintained. There is a problem that a rush current flows through the LED lamp.
- a lamp driving power source is: An alternator having an LED lamp lighting device having a plurality of LED lamps connected in series between a first terminal and a second terminal and capable of switching an LED lamp to be lit among the plurality of LED lamps.
- a lamp driving power source for supplying a driving current for rectifying the alternating current and lighting the LED lamp, A first power supply terminal on the low potential side connected to the first terminal; A second power supply terminal on the high potential side connected to the second terminal; A first input terminal connected to one end of the AC generator; A second input terminal connected to the other end of the AC generator; A power switch element having one end connected to the first input terminal and the other end connected to the first power terminal; A capacitor having one end connected to the other end of the power switch element and the other end connected to the second input terminal; A first protective resistor connected between the second input terminal and the second power supply terminal; A second protective resistor connected in series with the first protective resistor between the second input terminal and the second power supply terminal; A protective switch element having one end connected to one end of the first protective resistor and the other end connected to the other end of the first protective resistor; When the voltage drop in the second protection resistor is less than a preset threshold voltage, the protection switch element is turned on, while the voltage drop in the second protection resistor is greater than or equal
- a current protection control circuit for turning off the protection switch element When a current flows between the second input terminal and the second power supply terminal, the current flowing between the second input terminal and the second power supply terminal is constant.
- the power switch element When the power switch element is controlled and no current flows between the second input terminal and the second power supply terminal, the first power supply terminal and the second power supply terminal And a drive control circuit that controls the power switch element so that a voltage between them becomes a predetermined voltage set in advance.
- the LED lamp lighting device short-circuits any of the LED lamps that are lit from a state in which any of the plurality of LED lamps connected in series is lit.
- the current protection control circuit includes: In a state where any one of the plurality of LED lamps connected in series is lit, when the voltage drop in the second protective resistor is less than the threshold voltage, the protective switch element is turned on, After that, when the voltage drop in the second protective resistor becomes equal to or higher than the threshold voltage by short-circuiting any of the LED lamps that are lit by the LED lamp lighting device, the protective switch element It is characterized by turning off.
- the first protective resistor has one end connected to the second input terminal and the other end connected to one end of the second protective resistor.
- the other end of the second protective resistor is connected to the second power supply terminal
- the protective switch element is an NPN bipolar transistor having a collector connected to one end of the first protective resistor and an emitter connected to the other end of the first protective resistor;
- the current protection control circuit includes: A resistor having one end connected to the collector of the NPN bipolar transistor and the other end connected to the base of the NPN bipolar transistor; A first diode having an anode connected to a base of the NPN bipolar transistor; And an anode connected to a cathode of the first diode, and a cathode connected to the other end of the second protective resistor.
- the drive control circuit includes: When a current flows through the detection resistor, the power switch element is controlled so that the current flowing through the detection resistor is constant, On the other hand, when no current flows through the detection resistor, the power switch element is set so that the voltage between the first power supply terminal and the second power supply terminal is a preset specified voltage. It is characterized by control.
- the LED lamp lighting device is A first lamp circuit comprising one LED lamp or a plurality of LED lamps connected in series, one end of which is connected to the first terminal;
- a second lamp circuit comprising one LED lamp or a plurality of LED lamps connected in series, one end connected to the other end of the first lamp circuit and the other end connected to the second terminal
- a switch circuit that conducts only one of them,
- a control switch element having one end connected to the second contact and the other end connected to the second terminal;
- a switch control circuit that controls the control switch element in accordance with a potential difference between the second contact and the second terminal;
- the switch control circuit includes: When the magnitude of the potential difference between the second contact and the second terminal is equal to or higher than a preset reference voltage, the control switch element is turned on, When the magnitude of the potential difference between the second contact and the second terminal is less than the reference voltage, the control switch element is
- the control switch element is a thyristor having a cathode connected to the second contact and an anode connected to the second terminal.
- the switch control circuit includes: A first control resistor having one end connected to the second contact and the other end connected to the gate of the thyristor; A second control resistor having one end connected to the other end of the first control resistor; And a Zener diode having an anode connected to the other end of the second control resistor and a cathode connected to the second terminal.
- the lamp driving power source is It has a constant voltage control function and a constant current control function, When a current can be supplied to any of the LED lamps in the first lamp circuit and the second lamp circuit, a constant current is supplied to the LED lamp by the constant current control function, When no current can flow through any of the LED lamps in the first lamp circuit and the second lamp circuit, the constant voltage control function causes the first power supply terminal and the second power supply terminal to The output voltage output during the period is raised to a predetermined voltage set in advance and limited to a constant voltage.
- the switch circuit is configured to be manually controlled by a user.
- An alternator having an LED lamp lighting device having a plurality of LED lamps connected in series between a first terminal and a second terminal and capable of switching an LED lamp to be lit among the plurality of LED lamps.
- a first driving terminal on the low potential side connected to the first terminal, and a second driving power supply that supplies a driving current for rectifying the alternating current of the LED lamp to turn on the LED lamp.
- a high-potential-side second power supply terminal connected to the terminal, a first input terminal connected to one end of the AC generator, and a second input terminal connected to the other end of the AC generator And one end connected to the first input terminal, the other end connected to the first power supply terminal, one end connected to the other end of the power switch element, and the other end A capacitor connected to the second input terminal; and A first protective resistor connected between the second input terminal and the second power supply terminal, and the first protective resistor between the second input terminal and the second power supply terminal.
- a second protection resistor connected in series to the first protection resistor, one end connected to one end of the first protection resistor, and the other end connected to the other end of the first protection resistor
- a lamp driving power source includes a plurality of LED lamps connected in series between a first terminal and a second terminal, and switches an LED lamp to be lit among the plurality of LED lamps.
- a drive current for lighting the LED lamp is supplied to a possible LED lamp lighting device by rectifying the AC current of the AC generator.
- the lamp driving power source includes a low-potential side first power source terminal connected to the first terminal, a high-potential side second power source terminal connected to the second terminal, and an AC generator A first input terminal connected to one end, a second input terminal connected to the other end of the AC generator, one end connected to the first input terminal, and the other end connected to the first power supply terminal And a capacitor having one end connected to the other end of the power switch element and the other end connected to the second input terminal.
- the lamp driving power source includes a first protective resistor connected between the second input terminal and the second power source terminal, and a second input terminal between the second input terminal and the second power source terminal.
- a second protective resistor connected in series with the first protective resistor, and one end connected to one end of the first protective resistor and the other end connected to the other end of the first protective resistor
- the protection switch element is turned on, while the voltage drop in the second protection resistor is the threshold voltage
- the power switch element is controlled so that the current flowing between the On the other hand, when no current flows between the second input terminal and the second power supply terminal, the voltage between the first power supply terminal and the second power supply terminal becomes a preset specified voltage.
- a drive control circuit for controlling the power switch element.
- the current protection control circuit when the rush current is generated due to the switching of the switch circuit of the LED lamp lighting device, the current protection control circuit according to the present invention provides the protection switch element according to the magnitude of the current. To control. Thereby, the rush current is limited by controlling the resistance value of the current path through which the current flows.
- the rush current can be suppressed.
- FIG. 1 is a circuit diagram illustrating an example of a configuration of a system including a lamp driving power source according to a first embodiment which is an aspect of the present invention.
- FIG. 2 is a circuit diagram showing an example of a state in which the protective switch element Q1 of the lamp driving power source 10 shown in FIG. 1 is turned on.
- FIG. 3 is a circuit diagram showing an example of a state in which the protection switch element Q1 of the lamp driving power source 10 shown in FIG. 1 is turned off.
- FIG. 4 is a waveform diagram showing an example of changes in the current IX output from the lamp driving power supply 10 shown in FIG. 1 and the voltage VC of the capacitor CX.
- FIG. 1 is a circuit diagram showing an example of the configuration of a system including a lamp driving power source according to a first embodiment which is an aspect of the present invention.
- the example shown in FIG. 1 is an example of a lamp driving power source that drives a headlamp of a vehicle.
- an LED lamp lighting device 100 is connected to the lamp driving power source 10.
- An AC generator G is connected to the lamp driving power source 10.
- the AC generator G is a single-phase AC generator, and is configured to generate AC power by rotating in conjunction with an engine of a vehicle, for example.
- One end G1 of the AC generator G is connected to the first input terminal TI1 of the lamp driving power source 10, and the other end G2 is grounded.
- the AC generator G is configured to output the generated AC voltage VA to the lamp driving power source 10.
- the first power supply terminal TS1 on the negative voltage side (low potential side) of the lamp driving power supply 10 is connected to the first terminal Ta1 of the LED lamp lighting device 100, and the positive voltage side (high potential) of the lamp driving power supply 10 is used.
- Side) second power supply terminal TS2 is connected to the second terminal Ta2 of the LED lamp lighting device 100.
- the lamp driving power supply 10 supplies the LED lamp lighting device 100 with a driving current for rectifying the AC current of the AC generator G and lighting the LED lamp.
- the LED lamp lighting device 100 is connected between the low-potential-side first power supply terminal TS1 and the high-potential-side second power supply terminal TS2 of the lamp drive power supply 10, and the drive current from the lamp drive power supply 10 is reduced.
- a plurality of LED lamps connected in series are lit by the drive current when supplied.
- This LED lamp lighting device 100 has a plurality of LED lamps LH1, LH2, LL1, and LL2 connected in series between a first terminal Ta1 and a second terminal Ta2, and a plurality of LED lamps LH1, LH2. , LL1 and LL2 can be switched among the LED lamps to be lit (FIG. 1).
- the lamp driving power source 10 includes, for example, a first input terminal TI1, a second input terminal TI2, a first power terminal TS1, a second power terminal TS2, Power switch element SX, capacitor CX, first protection resistor R1, second protection resistor R2, detection resistor RX, protection switch element Q1, current protection control circuit SC, and drive control And a circuit CON.
- the first power supply terminal TS1 on the low potential side is connected to the first terminal Ta1.
- the second power supply terminal TS2 on the high potential side is connected to the second terminal Ta2.
- the first input terminal TI1 is connected to one end G1 of the AC generator G.
- the second input terminal TI2 is connected to the other end G2 of the AC generator G via a ground.
- the power switch element SX has one end connected to the first input terminal TI1 and the other end connected to the first power terminal TS1.
- the power switch element SX has, for example, a cathode connected to the first input terminal TI1, an anode connected to the first power terminal TS1, and a gate supplied with a control signal from the drive control circuit CON. Is a thyristor to which is input.
- the capacitor CX has one end connected to the other end of the power switch element SX and the other end connected to the second input terminal TI2 (the other end G2 of the AC generator G).
- This capacitor CX is a smoothing capacitor (electrolytic capacitor).
- the first protective resistor R1 is connected between the second input terminal TI2 and the second power supply terminal TS2.
- the second protection resistor R2 is connected in series with the first protection resistor R1 between the second input terminal TI2 and the second power supply terminal TS2.
- the detection resistor RX is connected in series with the first protection resistor R1 and the second protection resistor R2 between the second input terminal TI2 and the second power supply terminal TS2.
- the detection resistor RX is connected between the second input terminal TI2 and one end of the first protection resistor R1.
- the first protection resistor R1 has one end connected to the second input terminal TI2 (via the detection resistor RX) and the other end connected to one end of the second protection resistor R2.
- the other end of the second protective resistor R2 is connected to the second power supply terminal TS2.
- the detection resistor RX is a resistor for detecting the current IX. Therefore, the resistance value of the detection resistor RX is set to be smaller than the resistance values of the first protection resistor R1 and the second protection resistor R2.
- the drive control circuit CON is between the second input terminal TI2 and the second power supply terminal TS2.
- the power switch element SX is controlled so that the flowing current is constant.
- the drive control circuit CON is between the first power supply terminal TS1 and the second power supply terminal TS2.
- the power switch element SX is controlled so that the voltage of the power supply becomes a predetermined voltage set in advance.
- the drive control circuit CON detects the current IX flowing through the detection resistor RX.
- the drive control circuit CON controls the power switch element SX so that the current IX flowing through the detection resistor RX is constant.
- the power switch element (thyristor) SX rectifies the voltage on the negative phase side of the AC voltage VA output from the AC generator G by half-wave based on the control of the drive control circuit CON, and supplies it to the LED lamp lighting device 100. A drive current is supplied.
- the power switch element (thyristor) SX charges the capacitor CX during the conduction period.
- the capacitor CX serves as a rectifying and smoothing capacitor for supplying current to the LED lamp lighting device 100 during the non-conduction period of the power switch element (thyristor) SX.
- the drive control circuit CON controls the conduction timing (ignition phase) of the power switch element (thyristor) SX so that the effective value or average value of the current flowing through the LED lamp lighting device 100 is constant.
- the drive control circuit CON is configured so that the potential difference between the first power supply terminal TS1 and the second power supply terminal TS2 becomes a preset specified voltage.
- the power switch element SX is controlled.
- the lamp driving power source 10 has a constant voltage control function and a constant current control function.
- the constant current control function allows a constant current to flow to the LED lamp ( A constant current is output from the second power supply terminal TS2.
- the case where the current can be supplied to the LED lamp is a case where the LED lamp is not broken (conducted).
- the constant voltage control function The output voltage output between the first power supply terminal TS1 and the second power supply terminal TS2 is raised to a preset specified voltage to be a constant voltage.
- the case where the current cannot be supplied to the LED lamp is a case where the LED lamp is broken (disconnected) and is in an open load state.
- one end of the protective switch element Q1 is connected to one end of the first protective resistor R1, and the other end is connected to the other end of the first protective resistor R1.
- the protective switch element Q1 is an NPN bipolar transistor having a collector connected to one end of the first protective resistor R1 and an emitter connected to the other end of the first protective resistor R1. is there.
- the current protection control circuit SC turns on the protection switch element Q1 when the voltage drop in the second protection resistor R2 is less than a preset threshold voltage.
- the current protection control circuit SC is configured to turn off the protection switch element Q1 when the voltage drop in the second protection resistor R2 is equal to or higher than the threshold voltage.
- the current protection control circuit SC has, for example, a resistor Rb, a first diode Dr1, and a second diode Dr2, as shown in FIG.
- the resistor Rb has one end connected to one end (collector) of the protective switch element (NPN type bipolar transistor) Q1, and the other end connected to the control terminal (base) of the protective switch element (NPN type bipolar transistor) Q1. Yes.
- the anode of the first diode Dr1 is connected to the control terminal (base) of the protective switch element (NPN type bipolar transistor) Q1.
- the second diode Dr2 has an anode connected to the other end (cathode) of the protection switch element (NPN bipolar transistor) Q1, and a cathode connected to the other end of the second protection resistor R2.
- the current protection control circuit SC having such a configuration controls the protection switch element (NPN bipolar transistor) Q1 when the voltage drop in the second protection resistor R2 is less than a preset threshold voltage.
- a base current is supplied to the terminal (base) to turn on the protection switch element Q1.
- the current protection control circuit SC determines the base current of the control terminal (base) of the protection switch element (NPN bipolar transistor) Q1. And the protective switch element Q1 is turned off.
- the current IX flows through the first protective resistor R1 bypassing the protective switch element (NPN bipolar transistor) Q1.
- the LED lamp lighting device 100 includes a first terminal Ta1, a second terminal Ta2, a first lamp circuit L1, a second lamp circuit L2, and a switch circuit.
- SW1, a control switch element SCR, and a switch control circuit C1 are included.
- the first terminal Ta1 is connected to the first power supply terminal TS1.
- the second terminal Ta2 is connected to the second power supply terminal TS2.
- the first lamp circuit L1 is composed of one LED lamp or a plurality of LED lamps connected in series, and one end thereof is connected to the first terminal Ta1.
- the first lamp circuit L1 is configured by connecting two LED lamps LH1 and LH2 in series.
- one end of the first lamp circuit L1 is the cathode side of the LED lamp LH1 of the first lamp circuit L1.
- the other end of the first lamp circuit L1 is the anode side of the LED lamp LH2 of the first lamp circuit L1.
- the LED lamp of the first lamp circuit L1 is, for example, a high beam lamp (for example, a driving headlamp) of a vehicle headlamp.
- the second lamp circuit L2 is composed of one LED lamp or a plurality of LED lamps connected in series, one end is connected to the other end of the first lamp circuit L1, and the other end is connected to the second terminal Ta2. It is connected.
- the second lamp circuit L2 includes two LED lamps LL1 and LL2 connected in series.
- one end of the second lamp circuit L2 is the cathode side of the LED lamp LL1 of the second lamp circuit L2.
- the other end of the second lamp circuit L2 is the anode side of the LED lamp LL2 of the second lamp circuit L2.
- the LED lamp of the second lamp circuit L2 is, for example, a low beam lamp (for example, a headlight for passing) of the headlamp.
- the switch circuit SW1 is connected between the reference node NB connected to the other end of the first ramp circuit L1 and the first contact NS1 connected to the first terminal Ta1, or the reference node NB. Only one of the second contacts NS2 is conducted.
- the switch circuit SW1 when the switch circuit SW1 is operated, the reference node NB connected to the other end of the first ramp circuit L1 and the first contact NS1 connected to the first terminal Ta1 become conductive.
- the LED lamps LH1 and LH2 of the first lamp circuit L1 are short-circuited. Thereby, since no current flows through the first lamp circuit L1, the LED lamps LH1 and LH2 of the first lamp circuit L1 are turned off.
- the switch circuit SW1 switches between the high beam (the first lamp circuit L1 and the second lamp circuit L2 are turned on) Hi and the low beam (the second lamp circuit L2 is turned on) Lo of the vehicle headlamp described above. It is a switch for.
- the switch circuit SW1 is manually controlled by the user.
- the control switch element SCR has one end connected to the second contact NS2 and the other end connected to the second terminal Ta2.
- the control switch element SCR is a thyristor having a cathode connected to the second contact NS2 and an anode connected to the second terminal Ta2.
- the switch control circuit C1 controls the control switch element SCR according to the potential difference between the second contact NS2 and the second terminal Ta2.
- the switch control circuit C1 controls the switch element SCR for control. Is supposed to turn on.
- the reference voltage is compared with the magnitude (absolute value) of the value (the same applies hereinafter).
- the switch control circuit C1 turns off the control switch element SCR when the magnitude (absolute value) of the potential difference between the second contact NS2 and the second terminal Ta2 is less than the reference voltage. It is like that.
- the switch control circuit C1 includes, for example, a first control resistor Rs, a second control resistor Rt, and a Zener diode Ze.
- One end of the first control resistor Rs is connected to the second contact NS2, and the other end is connected to the gate (control terminal) of the thyristor (control switch element) SCR.
- One end of the second control resistor Rt is connected to the other end of the first control resistor Rs.
- the Zener diode Ze has an anode connected to the other end of the second control resistor Rt and a cathode connected to the second terminal Ta2.
- the switch control circuit C1 is configured to monitor the voltage of the second contact NS2 by the first control resistor Rs, the second control resistor Rt, and the Zener diode Ze.
- Zener diode Ze is turned on and a current flows through the second control resistor Rt, whereby a voltage is generated between the anode and the gate of the control switch element (thyristor) SCR. This voltage causes a gate current to flow through the gate of the control switch element SCR, and the control switch element SCR is turned on.
- the reference voltage can be set to a desired value by the resistance values of the first control resistor Rs and the second control resistor Rt and the breakdown voltage of the Zener diode Ze.
- FIG. 2 is a circuit diagram showing an example of a state in which the protective switch element Q1 of the lamp driving power source 10 shown in FIG. 1 is turned on.
- FIG. 3 is a circuit diagram showing an example of a state in which the protection switch element Q1 of the lamp driving power source 10 shown in FIG. 1 is turned off.
- the LED lamp lighting device 100 is configured to short-circuit any one of the LED lamps that are lit from a state in which any one of the plurality of LED lamps connected in series is lit. Yes. By short-circuiting the lit LED lamp, no current flows through the LED lamp, and as a result, the LED lamp is turned off.
- the current protection control circuit SC of the lamp driving power source 10 has a voltage drop in the second protection resistor R2 less than the threshold voltage in a state where any one of the plurality of LED lamps connected in series is lit.
- the protective switch element Q1 is turned on. Thereafter, by short-circuiting any of the LED lamps whose LED lamp lighting device is lit, the current protection control circuit SC is protected when the voltage drop in the second protection resistor becomes equal to or higher than the threshold voltage. Switch element Q1 is turned off.
- the switch circuit SW1 is electrically connected between the reference node NB and the first contact NS1.
- the switch circuit SW1 is switched by the user so that the high beam Hi is selected.
- the current protection control circuit SC has the second LED lamps LH1, LH2, LL1, and LL2 out of the plurality of LED lamps LH1, LH2, LL1, and LL2 connected in series. Since the voltage drop in the protective resistor R2 is less than the threshold voltage, the protective switch element Q1 is turned on.
- the current IX flows through the protective switch element (NPN type bipolar transistor) Q1 (FIG. 2).
- the switch circuit SW1 is operated by the user, and the first contact point connected to the reference node NB and the first terminal Ta1 from the state where the reference node NB and the second contact point NS2 are conducted.
- the state is switched to NS1 (FIG. 3).
- the switch control circuit C1 turns off the control switch element SCR.
- the switch circuit SW1 is switched by the user so that the low beam Lo is selected.
- the LED lamp lighting device 100 is lit from a state in which all the LED lamps LH1, LH2, LL1, and LL2 among the plurality of LED lamps LH1, LH2, LL1, and LL2 connected in series are lit. LED lamps LH1 and LH2 are short-circuited.
- the current IX bypasses the protective switch element (NPN type bipolar transistor) Q1 and flows through the first protective resistor R1 (FIG. 3).
- FIG. 4 is a waveform diagram showing an example of changes in the current IX output from the lamp driving power source 10 shown in FIG. 1 and the voltage VC of the capacitor CX.
- the constant current control function of the lamp driving power source 10 maintains the current IX constant, and the voltage VX of the capacitor CX is also constant.
- the switch circuit SW1 is operated by the user, and the state is switched between the reference node NB and the first contact NS1 connected to the first terminal Ta1.
- the number of LED lamps to be lit decreases, so the load decreases and the current IX increases (a rush current flows).
- the current protection control circuit SC detects that the voltage drop in the second protection resistor R2 is equal to or higher than the threshold voltage, and turns off the protection switch element Q1. Thereby, compared with a prior art, the increase in the current IX is suppressed.
- the current protection control circuit SC turns on the protection switch element Q1 when the voltage drop in the second protection resistor R2 becomes less than the threshold voltage. Thereafter, the constant current control function of the lamp driving power supply 10 maintains the current IX constant, and the voltage VX of the capacitor CX also becomes constant.
- the switch circuit SW1 is operated to conduct between the reference node NB and the second contact NS2 (FIG. 3) Even though, no current flows through the second ramp circuit L2.
- the switch control circuit C1 is used for the control when the magnitude (absolute value) of the potential difference between the second contact NS2 and the second terminal Ta2 is less than the reference voltage.
- the switch element SCR is turned off. Therefore, current IX does not flow.
- the switch control circuit C1 turns on the control switch element SCR.
- the LED lamps LH1 and LH2 of the first lamp circuit L1 are turned on.
- the lamp driving power source 10 is configured so that the current protection control circuit SC performs the protection switch according to the magnitude of the current IX. Control element Q1. Thereby, the rush current is limited by controlling the resistance value of the current path through which the current IX flows.
- the rush current can be suppressed.
- the loss when the rush current does not flow can be reduced by controlling the resistance value of the current path through which the current IX flows.
- the LED lamp of the first lamp circuit is a high beam lamp of a head lamp of a vehicle
- the LED lamp of the second lamp circuit is a low beam lamp of the head lamp.
- the LED lamp of the first lamp circuit may be a low beam lamp of a vehicle headlamp
- the LED lamp of the second lamp circuit may be a high beam lamp of the headlamp.
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Abstract
Description
第1の端子と第2の端子との間で直列に接続された複数のLEDランプを有し且つ前記複数のLEDランプのうち点灯するLEDランプを切替え可能なLEDランプ点灯装置に、交流発電機の交流電流を整流して前記LEDランプを点灯するための駆動電流を供給するランプ駆動電源であって、
前記第1の端子に接続される低電位側の第1の電源端子と、
前記第2の端子に接続される高電位側の第2の電源端子と、
前記交流発電機の一端に接続された第1の入力端子と、
前記交流発電機の他端に接続された第2の入力端子と、
一端が前記第1の入力端子に接続され、他端が前記第1の電源端子に接続された電源用スイッチ素子と、
一端が前記電源用スイッチ素子の他端に接続され、他端が前記第2の入力端子に接続されたコンデンサと、
前記第2の入力端子と前記第2の電源端子との間に接続された第1の保護用抵抗と、
前記第2の入力端子と前記第2の電源端子との間で前記第1の保護用抵抗と直列に接続された第2の保護用抵抗と、
一端が前記第1の保護用抵抗の一端に接続され、他端が前記第1の保護用抵抗の他端に接続された保護用スイッチ素子と、
前記第2の保護用抵抗における電圧降下が予め設定された閾値電圧未満である場合には、前記保護用スイッチ素子をオンし、一方、前記第2の保護用抵抗における電圧降下が前記閾値電圧以上である場合には、前記保護用スイッチ素子をオフする電流保護制御回路と、
前記第2の入力端子と前記第2の電源端子との間に電流が流れる場合には、前記第2の入力端子と前記第2の電源端子との間に流れる電流が一定になるように前記電源用スイッチ素子を制御し、一方、前記第2の入力端子と前記第2の電源端子との間に電流が流れない場合には、前記第1の電源端子と前記第2の電源端子との間の電圧が予め設定された規定電圧になるように、前記電源用スイッチ素子を制御する駆動制御回路と、を備える
ことを特徴とする。
前記LEDランプ点灯装置は、前記直列に接続された複数のLEDランプのうちの何れかを点灯させた状態から、点灯している前記LEDランプの何れかを短絡させる
ことを特徴とする。
前記電流保護制御回路は、
前記直列に接続された複数のLEDランプのうちの何れかを点灯させた状態において、前記第2の保護用抵抗における電圧降下が前記閾値電圧未満であるときには、前記保護用スイッチ素子をオンし、
その後、前記LEDランプ点灯装置が点灯している前記LEDランプの何れかを短絡させることにより、前記第2の保護用抵抗における電圧降下が前記閾値電圧以上になったときに、前記保護用スイッチ素子をオフする
ことを特徴とする。
前記第1の保護用抵抗は、一端が前記第2の入力端子に接続され、他端が前記第2の保護用抵抗の一端に接続され、
前記第2の保護用抵抗は、他端が前記第2の電源端子に接続され、
前記保護用スイッチ素子は、コレクタが前記第1の保護用抵抗の一端に接続され、エミッタが前記第1の保護用抵抗の他端に接続されたNPN型バイポーラトランジスタであり、
前記電流保護制御回路は、
一端が前記NPN型バイポーラトランジスタのコレクタに接続され、他端が前記NPN型バイポーラトランジスタのベースに接続された抵抗と、
アノードが前記NPN型バイポーラトランジスタのベースに接続された第1のダイオードと、
アノードが前記第1のダイオードのカソードに接続され、カソードが前記第2の保護用抵抗の他端に接続された第2のダイオードと、を有する
ことを特徴とする。
前記ランプ駆動電源において、
前記第2の入力端子と前記第2の電源端子との間で、前記第1の保護用抵抗および前記第2の保護用抵抗と直列に接続された検出抵抗をさらに備え、
前記駆動制御回路は、
前記検出抵抗に電流が流れる場合には、前記検出抵抗に流れる電流が一定になるように前記電源用スイッチ素子を制御し、
一方、前記検出抵抗に電流が流れない場合には、前記第1の電源端子と前記第2の電源端子との間の電圧が予め設定された規定電圧になるように、前記電源用スイッチ素子を制御する
ことを特徴とする。
前記LEDランプ点灯装置は、
1つのLEDランプ又は直列に接続された複数のLEDランプで構成され、一端が前記第1の端子に接続された第1のランプ回路と、
1つのLEDランプ又は直列に接続された複数のLEDランプで構成され、一端が前記第1のランプ回路の他端に接続され、他端が前記第2の端子に接続された第2のランプ回路と、
前記第1のランプ回路の他端に接続された基準ノードと、前記第1の端子に接続された第1の接点との間、又は、前記基準ノードと、第2の接点との間の何れか一つのみを導通するスイッチ回路と、
一端が前記第2の接点に接続され、他端が前記第2の端子に接続された制御用スイッチ素子と、
前記第2の接点と前記第2の端子との間の電位差に応じて、前記制御用スイッチ素子を制御するスイッチ制御回路と、を備え、
前記スイッチ制御回路は、
前記第2の接点と前記第2の端子との間の電位差の大きさが、予め設定された基準電圧以上の場合には、前記制御用スイッチ素子をオンし、
前記第2の接点と前記第2の端子との間の電位差の大きさが、前記基準電圧未満の場合には、前記制御用スイッチ素子をオフする
ことを特徴とする。
前記制御用スイッチ素子は、カソードが前記第2の接点に接続され、アノードが前記第2の端子に接続されたサイリスタである
ことを特徴とする。
前記スイッチ制御回路は、
一端が前記第2の接点に接続され、他端が前記サイリスタのゲートに接続された第1の制御抵抗と、
一端が前記第1の制御抵抗の他端に接続された第2の制御抵抗と、
アノードが前記第2の制御抵抗の他端に接続され、カソードが前記第2の端子に接続されたツェナーダイオードと、を有する
ことを特徴とする。
定電圧制御機能と定電流制御機能を有して構成されており、
前記第1のランプ回路および前記第2のランプ回路中の何れかのLEDランプに電流を流せる場合には、前記定電流制御機能により、前記LEDランプに定電流を流し、
前記第1のランプ回路および前記第2のランプ回路中の何れのLEDランプにも電流を流せない場合には、前記定電圧制御機能により、前記第1の電源端子と前記第2の電源端子との間に出力する出力電圧を、予め設定された規定電圧まで上昇させて一定の電圧に制限する
ことを特徴とする。
前記スイッチ回路は、使用者により手動で制御されるようになっていることを特徴とする。
第1の端子と第2の端子との間で直列に接続された複数のLEDランプを有し且つ前記複数のLEDランプのうち点灯するLEDランプを切替え可能なLEDランプ点灯装置に、交流発電機の交流電流を整流して前記LEDランプを点灯するための駆動電流を供給するランプ駆動電源であって、前記第1の端子に接続される低電位側の第1の電源端子と、前記第2の端子に接続される高電位側の第2の電源端子と、前記交流発電機の一端に接続された第1の入力端子と、前記交流発電機の他端に接続された第2の入力端子と、一端が前記第1の入力端子に接続され、他端が前記第1の電源端子に接続された電源用スイッチ素子と、一端が前記電源用スイッチ素子の他端に接続され、他端が前記第2の入力端子に接続されたコンデンサと、前記第2の入力端子と前記第2の電源端子との間に接続された第1の保護用抵抗と、前記第2の入力端子と前記第2の電源端子との間で前記第1の保護用抵抗と直列に接続された第2の保護用抵抗と、一端が前記第1の保護用抵抗の一端に接続され、他端が前記第1の保護用抵抗の他端に接続された保護用スイッチ素子と、前記第2の入力端子と前記第2の電源端子との間に電流が流れる場合には、前記第2の入力端子と前記第2の電源端子との間に流れる電流が一定になるように前記電源用スイッチ素子を制御し、一方、前記第2の入力端子と前記第2の電源端子との間に電流が流れない場合には、前記第1の電源端子と前記第2の電源端子との間の電圧が予め設定された規定電圧になるように、前記電源用スイッチ素子を制御する駆動制御回路と、を備えるランプ駆動電源の制御方法であって、
前記第2の保護用抵抗における電圧降下が予め設定された閾値電圧未満である場合には、前記保護用スイッチ素子をオンし、
一方、前記第2の保護用抵抗における電圧降下が前記閾値電圧以上である場合には、前記保護用スイッチ素子をオフする
ことを特徴とする。
このような構成を有する電流保護制御回路SCは、第2の保護用抵抗R2における電圧降下が予め設定された閾値電圧未満である場合には、保護用スイッチ素子(NPN型バイポーラトランジスタ)Q1の制御端子(ベース)にベース電流を流して、保護用スイッチ素子Q1をオンする。
第1の制御抵抗Rsは、一端が第2の接点NS2に接続され、他端がサイリスタ(制御用スイッチ素子)SCRのゲート(制御端子)に接続されている。
そして、時間t2において、電流保護制御回路SCは、第2の保護用抵抗R2における電圧降下が閾値電圧未満になると、保護用スイッチ素子Q1をオンする。その後、ランプ駆動電源10の該定電流制御機能により、電流IXが一定に維持され、コンデンサCXの電圧VXも一定となる。
100 LEDランプ点灯装置
G 交流発電機
G1 交流発電機の一端
G2 交流発電機の他端
Ta1 第1の端子
Ta2 第2の端子
IX 電流
TI1 第1の入力端子
TI2 第2の入力端子
TS1 第1の電源端子
TS2 第2の電源端子
SX 電源用スイッチ素子
CX コンデンサ
R1 第1の保護用抵抗
R2 第2の保護用抵抗
RX 検出抵抗
Q1 保護用スイッチ素子
SC 電流保護制御回路
CON 駆動制御回路
SC 電流保護制御回路
Rb 抵抗
Dr1 第1のダイオード
Dr2 第2のダイオード
L1 第1のランプ回路
L2 第2のランプ回路
SW1 スイッチ回路
SCR 制御用スイッチ素子
C1 スイッチ制御回路
LH1、LH2、LL1、LL2 LEDランプ
Claims (11)
- 第1の端子と第2の端子との間で直列に接続された複数のLEDランプを有し且つ前記複数のLEDランプのうち点灯するLEDランプを切替え可能なLEDランプ点灯装置に、交流発電機の交流電流を整流して前記LEDランプを点灯するための駆動電流を供給するランプ駆動電源であって、
前記第1の端子に接続される低電位側の第1の電源端子と、
前記第2の端子に接続される高電位側の第2の電源端子と、
前記交流発電機の一端に接続された第1の入力端子と、
前記交流発電機の他端に接続された第2の入力端子と、
一端が前記第1の入力端子に接続され、他端が前記第1の電源端子に接続された電源用スイッチ素子と、
一端が前記電源用スイッチ素子の他端に接続され、他端が前記第2の入力端子に接続されたコンデンサと、
前記第2の入力端子と前記第2の電源端子との間に接続された第1の保護用抵抗と、
前記第2の入力端子と前記第2の電源端子との間で前記第1の保護用抵抗と直列に接続された第2の保護用抵抗と、
一端が前記第1の保護用抵抗の一端に接続され、他端が前記第1の保護用抵抗の他端に接続された保護用スイッチ素子と、
前記第2の保護用抵抗における電圧降下が予め設定された閾値電圧未満である場合には、前記保護用スイッチ素子をオンし、一方、前記第2の保護用抵抗における電圧降下が前記閾値電圧以上である場合には、前記保護用スイッチ素子をオフする電流保護制御回路と、
前記第2の入力端子と前記第2の電源端子との間に電流が流れる場合には、前記第2の入力端子と前記第2の電源端子との間に流れる電流が一定になるように前記電源用スイッチ素子を制御し、一方、前記第2の入力端子と前記第2の電源端子との間に電流が流れない場合には、前記第1の電源端子と前記第2の電源端子との間の電圧が予め設定された規定電圧になるように、前記電源用スイッチ素子を制御する駆動制御回路と、を備える
ことを特徴とするランプ駆動電源。 - 前記LEDランプ点灯装置は、前記直列に接続された複数のLEDランプのうちの何れかを点灯させた状態から、点灯している前記LEDランプの何れかを短絡させる
ことを特徴とする請求項1に記載のランプ駆動電源。 - 前記電流保護制御回路は、
前記直列に接続された複数のLEDランプのうちの何れかを点灯させた状態において、前記第2の保護用抵抗における電圧降下が前記閾値電圧未満であるときには、前記保護用スイッチ素子をオンし、
その後、前記LEDランプ点灯装置が点灯している前記LEDランプの何れかを短絡させることにより、前記第2の保護用抵抗における電圧降下が前記閾値電圧以上になったときに、前記保護用スイッチ素子をオフする
ことを特徴とする請求項2に記載のランプ駆動電源。 - 前記第1の保護用抵抗は、一端が前記第2の入力端子に接続され、他端が前記第2の保護用抵抗の一端に接続され、
前記第2の保護用抵抗は、他端が前記第2の電源端子に接続され、
前記保護用スイッチ素子は、コレクタが前記第1の保護用抵抗の一端に接続され、エミッタが前記第1の保護用抵抗の他端に接続されたNPN型バイポーラトランジスタであり、
前記電流保護制御回路は、
一端が前記NPN型バイポーラトランジスタのコレクタに接続され、他端が前記NPN型バイポーラトランジスタのベースに接続された抵抗と、
アノードが前記NPN型バイポーラトランジスタのベースに接続された第1のダイオードと、
アノードが前記第1のダイオードのカソードに接続され、カソードが前記第2の保護用抵抗の他端に接続された第2のダイオードと、を有する
ことを特徴とする請求項1に記載のランプ駆動電源。 - 前記第2の入力端子と前記第2の電源端子との間で、前記第1の保護用抵抗および前記第2の保護用抵抗と直列に接続された検出抵抗をさらに備え、
前記駆動制御回路は、
前記検出抵抗に電流が流れる場合には、前記検出抵抗に流れる電流が一定になるように前記電源用スイッチ素子を制御し、
一方、前記検出抵抗に電流が流れない場合には、前記第1の電源端子と前記第2の電源端子との間の電圧が予め設定された規定電圧になるように、前記電源用スイッチ素子を制御する
ことを特徴とする請求項4に記載のランプ駆動電源。 - 前記LEDランプ点灯装置は、
1つのLEDランプ又は直列に接続された複数のLEDランプで構成され、一端が前記第1の端子に接続された第1のランプ回路と、
1つのLEDランプ又は直列に接続された複数のLEDランプで構成され、一端が前記第1のランプ回路の他端に接続され、他端が前記第2の端子に接続された第2のランプ回路と、
前記第1のランプ回路の他端に接続された基準ノードと、前記第1の端子に接続された第1の接点との間、又は、前記基準ノードと、第2の接点との間の何れか一つのみを導通するスイッチ回路と、
一端が前記第2の接点に接続され、他端が前記第2の端子に接続された制御用スイッチ素子と、
前記第2の接点と前記第2の端子との間の電位差に応じて、前記制御用スイッチ素子を制御するスイッチ制御回路と、を備え、
前記スイッチ制御回路は、
前記第2の接点と前記第2の端子との間の電位差の大きさが、予め設定された基準電圧以上の場合には、前記制御用スイッチ素子をオンし、
前記第2の接点と前記第2の端子との間の電位差の大きさが、前記基準電圧未満の場合には、前記制御用スイッチ素子をオフする
ことを特徴とする請求項1に記載のランプ駆動電源。 - 前記制御用スイッチ素子は、カソードが前記第2の接点に接続され、アノードが前記第2の端子に接続されたサイリスタである
ことを特徴とする請求項6に記載のランプ駆動電源。 - 前記スイッチ制御回路は、
一端が前記第2の接点に接続され、他端が前記サイリスタのゲートに接続された第1の制御抵抗と、
一端が前記第1の制御抵抗の他端に接続された第2の制御抵抗と、
アノードが前記第2の制御抵抗の他端に接続され、カソードが前記第2の端子に接続されたツェナーダイオードと、を有する
ことを特徴とする請求項7に記載のランプ駆動電源。 - 前記ランプ駆動電源は、
定電圧制御機能と定電流制御機能を有して構成されており、
前記第1のランプ回路および前記第2のランプ回路中の何れかのLEDランプに電流を流せる場合には、前記定電流制御機能により、前記LEDランプに定電流を流し、
前記第1のランプ回路および前記第2のランプ回路中の何れのLEDランプにも電流を流せない場合には、前記定電圧制御機能により、前記第1の電源端子と前記第2の電源端子との間に出力する出力電圧を、予め設定された規定電圧まで上昇させて一定の電圧に制限する
ことを特徴とする請求項1に記載のランプ駆動電源。 - 前記スイッチ回路は、使用者により手動で制御されるようになっていることを特徴とする請求項1に記載のランプ駆動電源。
- 第1の端子と第2の端子との間で直列に接続された複数のLEDランプを有し且つ前記複数のLEDランプのうち点灯するLEDランプを切替え可能なLEDランプ点灯装置に、交流発電機の交流電流を整流して前記LEDランプを点灯するための駆動電流を供給するランプ駆動電源であって、前記第1の端子に接続される低電位側の第1の電源端子と、前記第2の端子に接続される高電位側の第2の電源端子と、前記交流発電機の一端に接続された第1の入力端子と、前記交流発電機の他端に接続された第2の入力端子と、一端が前記第1の入力端子に接続され、他端が前記第1の電源端子に接続された電源用スイッチ素子と、一端が前記電源用スイッチ素子の他端に接続され、他端が前記第2の入力端子に接続されたコンデンサと、前記第2の入力端子と前記第2の電源端子との間に接続された第1の保護用抵抗と、前記第2の入力端子と前記第2の電源端子との間で前記第1の保護用抵抗と直列に接続された第2の保護用抵抗と、一端が前記第1の保護用抵抗の一端に接続され、他端が前記第1の保護用抵抗の他端に接続された保護用スイッチ素子と、前記第2の入力端子と前記第2の電源端子との間に電流が流れる場合には、前記第2の入力端子と前記第2の電源端子との間に流れる電流が一定になるように前記電源用スイッチ素子を制御し、一方、前記第2の入力端子と前記第2の電源端子との間に電流が流れない場合には、前記第1の電源端子と前記第2の電源端子との間の電圧が予め設定された規定電圧になるように、前記電源用スイッチ素子を制御する駆動制御回路と、を備えるランプ駆動電源の制御方法であって、
前記第2の保護用抵抗における電圧降下が予め設定された閾値電圧未満である場合には、前記保護用スイッチ素子をオンし、
一方、前記第2の保護用抵抗における電圧降下が前記閾値電圧以上である場合には、前記保護用スイッチ素子をオフする
ことを特徴とするランプ駆動電源の制御方法。
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WO2016157318A1 (ja) * | 2015-03-27 | 2016-10-06 | 新電元工業株式会社 | 車両用ledランプ点灯回路、車両用ledランプ点灯装置、および車両用ledランプ点灯回路の制御方法 |
CN108601136A (zh) * | 2018-03-19 | 2018-09-28 | 厦门阳光恩耐照明有限公司 | 一种拨动开关切换不同状态的驱动电路 |
WO2019163077A1 (ja) * | 2018-02-23 | 2019-08-29 | 新電元工業株式会社 | 車両用led点灯制御回路、車両用led点灯制御装置、及び、車両用led点灯制御回路の制御方法 |
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CN104730986A (zh) * | 2015-03-19 | 2015-06-24 | 天津市中环三峰电子有限公司 | 一种定时调节功率的紫外线灯控制电路 |
JP6717652B2 (ja) * | 2016-04-28 | 2020-07-01 | 株式会社ケーヒン | Ledランプ点灯装置 |
CN112738939B (zh) * | 2020-12-24 | 2023-04-18 | 深圳市裕富照明有限公司 | 车灯照明双路控制电子装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001298857A (ja) * | 2000-04-13 | 2001-10-26 | Cosel Co Ltd | 突入電流抑制回路 |
WO2009096414A1 (ja) * | 2008-01-31 | 2009-08-06 | Idec Corporation | 電気回路 |
JP2012147650A (ja) * | 2011-01-07 | 2012-08-02 | Advance Connectek Inc | 出力短絡保護を有する電流制限回路 |
JP2013020755A (ja) * | 2011-07-08 | 2013-01-31 | Shindengen Electric Mfg Co Ltd | 制御装置、及び制御方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4360310B2 (ja) * | 2004-10-22 | 2009-11-11 | サンケン電気株式会社 | 駆動装置 |
CN102006699B (zh) * | 2009-09-02 | 2013-04-17 | 海洋王照明科技股份有限公司 | 一种警用拍照灯电路 |
JP5641400B2 (ja) * | 2010-07-26 | 2014-12-17 | 東芝ライテック株式会社 | Ledランプ用電源装置およびledランプシステム |
-
2013
- 2013-04-19 CN CN201380002447.6A patent/CN105284189B/zh active Active
- 2013-04-19 JP JP2014501112A patent/JP5635209B1/ja active Active
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001298857A (ja) * | 2000-04-13 | 2001-10-26 | Cosel Co Ltd | 突入電流抑制回路 |
WO2009096414A1 (ja) * | 2008-01-31 | 2009-08-06 | Idec Corporation | 電気回路 |
JP2012147650A (ja) * | 2011-01-07 | 2012-08-02 | Advance Connectek Inc | 出力短絡保護を有する電流制限回路 |
JP2013020755A (ja) * | 2011-07-08 | 2013-01-31 | Shindengen Electric Mfg Co Ltd | 制御装置、及び制御方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016157318A1 (ja) * | 2015-03-27 | 2016-10-06 | 新電元工業株式会社 | 車両用ledランプ点灯回路、車両用ledランプ点灯装置、および車両用ledランプ点灯回路の制御方法 |
JPWO2016157318A1 (ja) * | 2015-03-27 | 2017-04-27 | 新電元工業株式会社 | 車両用ledランプ点灯回路、車両用ledランプ点灯装置、および車両用ledランプ点灯回路の制御方法 |
WO2019163077A1 (ja) * | 2018-02-23 | 2019-08-29 | 新電元工業株式会社 | 車両用led点灯制御回路、車両用led点灯制御装置、及び、車両用led点灯制御回路の制御方法 |
JPWO2019163077A1 (ja) * | 2018-02-23 | 2020-12-10 | 新電元工業株式会社 | 車両用led点灯制御回路、車両用led点灯制御装置、及び、車両用led点灯制御回路の制御方法 |
JP7052004B2 (ja) | 2018-02-23 | 2022-04-11 | 新電元工業株式会社 | 車両用led点灯制御回路、車両用led点灯制御装置、及び、車両用led点灯制御回路の制御方法 |
CN108601136A (zh) * | 2018-03-19 | 2018-09-28 | 厦门阳光恩耐照明有限公司 | 一种拨动开关切换不同状态的驱动电路 |
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