WO2014184847A1 - Lamp drive power supply and method for controlling lamp drive power supply - Google Patents
Lamp drive power supply and method for controlling lamp drive power supply Download PDFInfo
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- WO2014184847A1 WO2014184847A1 PCT/JP2013/063300 JP2013063300W WO2014184847A1 WO 2014184847 A1 WO2014184847 A1 WO 2014184847A1 JP 2013063300 W JP2013063300 W JP 2013063300W WO 2014184847 A1 WO2014184847 A1 WO 2014184847A1
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- power supply
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- 238000000034 method Methods 0.000 title claims description 6
- 238000001514 detection method Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 20
- 230000015556 catabolic process Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 1
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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]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
-
- 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]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
-
- 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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/54—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a series array of LEDs
Definitions
- 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 Laid-Open No. 2012-160413 detects an LED open error based on the voltage at the negative terminal of an LED array in which a plurality of LED lamps are connected in series. And this LED lighting control device increases the LED voltage applied to the positive terminal until the LED open error is canceled when the LED open error is detected, and the voltage when the LED open error is released is temporarily Determine as voltage. And when this LED lamp lighting control apparatus lights an LED array, it controls a power supply so that the LED voltage larger only by a predetermined value than a temporary LED voltage may be applied.
- an LED open error can be detected with a simple circuit configuration, and an LED voltage that does not cause the LED open error can be determined.
- this LED lamp lighting device a plurality of LED lamps are connected in series.
- a damaged lamp cannot be lit, but an undamaged lamp can be lit by a switch operation by a user.
- the lighting operation of the LED lamp lighting device when a failure occurs in any of the LED lamps connected in series has a problem different from the lighting operation of a general bulb lamp lighting device.
- An LED lamp lighting device Connected between a first power supply terminal on the low potential side and a second power supply terminal on the high potential side of the lamp drive power supply, receives a drive current from the lamp drive power supply, and is connected in series by the drive current.
- An LED lamp lighting device for lighting a plurality of LED lamps, A first terminal connected to the first power supply terminal; A second terminal connected to the second power supply terminal; 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 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 Circuit, A switch for switching between a state in which the reference node connected to the other end of the first ramp circuit and the first contact point are in conduction, and a state in which the reference node and the second contact point are in conduction.
- a switch control circuit for controlling the control switch element according to a potential difference between the one end and the other end of the control switch element,
- the switch control circuit includes: When the magnitude of the potential difference between one end and the other end of the control switch element 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 one end and the other end of the control switch element is less than the reference voltage, the control switch element is turned off.
- 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 preset specified voltage to be a constant voltage.
- 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.
- control switch element is a thyristor having a cathode connected to the first terminal and an anode connected to the first contact.
- the switch control circuit includes: A first control resistor having one end connected to the first terminal 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 first contact.
- the lamp driving power source is 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; 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 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 lamp driving power source is A detection resistor connected between the second input terminal and the second power supply terminal;
- 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 switch circuit can be manually switched between a state in which the reference node and the first contact point are conducted and a state in which the reference node and the second contact point are conducted by a user. It is characterized by that.
- the control method of the LED lamp lighting device Connected between a first power supply terminal on the low potential side and a second power supply terminal on the high potential side of the lamp drive power supply, receives a drive current from the lamp drive power supply, and is connected in series by the drive current.
- An LED lamp lighting device for lighting a plurality of LED lamps a first terminal connected to the first power supply terminal, a second terminal connected to the second power supply terminal, and one It is composed of an LED lamp or a plurality of LED lamps connected in series, one end of which is composed of a first lamp circuit connected to the first terminal and one LED lamp or a plurality of LED lamps connected in series.
- Lead between the reference node and the first contact A switch circuit that switches between the connected state, the reference node, and a state in which the second contact is conducted, one end connected to the first terminal and the other end connected to the first contact, Or a control switch element having one end connected to the second contact and the other end connected to the second terminal, and a control method of an LED lamp lighting device comprising: When the magnitude of the potential difference between one end and the other end of the control switch element 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 one end and the other end of the control switch element is less than the reference voltage, the control switch element is turned off.
- An LED lamp lighting device is connected between a low-potential-side first power supply terminal and a high-potential-side second power supply terminal of a lamp drive power supply.
- the LED lamp lighting device receives a supply and lights a plurality of LED lamps connected in series by a driving current.
- the LED lamp lighting device includes a first terminal connected to the first power supply terminal, a second terminal connected to the second power supply terminal, and a plurality of LED lamps connected in series. It is composed of an LED lamp, one end of which is connected to the first terminal and one LED lamp or a plurality of LED lamps connected in series, and one end of the other lamp circuit.
- the second lamp circuit having the other end connected to the second terminal, the reference node connected to the other end of the first lamp circuit, and the first contact are electrically connected.
- a switch circuit that switches between a state, a reference node, and a state in which the second contact is conducted, and one end connected to the first terminal and the other end connected to the first contact, or one end connected Connected to the second contact and the other end connected to the second terminal Comprising a patronage switching element, according to the potential difference between the one end and the other end of control switch element, and a switch control circuit for controlling the control switch element.
- the switch control circuit turns on the control switch element when the magnitude of the potential difference between one end and the other end of the control switch element is equal to or higher than a preset reference voltage. When the magnitude of the potential difference between the one end and the other end of the is less than the reference voltage, the control switch element is turned off.
- the operation when a failure occurs in the LED lamp of the LED lamp lighting device can be made equivalent to the operation of a general bulb lamp lighting device.
- FIG. 1 is a circuit diagram illustrating an example of a configuration of a system including an LED lamp lighting device 100 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 switch circuit of the LED lamp lighting device shown in FIG. 1 is conducting between the reference node and the second contact.
- FIG. 3 is a circuit diagram showing an example of a state in which the switch circuit of the LED lamp lighting device shown in FIG. 1 is conducting between the reference node and the first contact.
- FIG. 4 is a circuit diagram showing an example of a state in which the switch circuit SW1 of the LED lamp lighting device 100 shown in FIG. 1 is conducting between the reference node NB and the second contact NS2.
- FIG. 2 is a circuit diagram showing an example of a state in which the switch circuit of the LED lamp lighting device shown in FIG. 1 is conducting between the reference node and the second contact NS2.
- FIG. 3 is a circuit diagram showing an example of a state in which the switch circuit SW
- FIG. 5 is a circuit diagram illustrating an example of a state in which the switch circuit SW1 of the LED lamp lighting device 100 illustrated in FIG. 1 is conducting between the reference node NB and the first contact NS1.
- FIG. 6 is a circuit diagram showing an example of a state in which the switch circuit SW1 of the LED lamp lighting device 100 shown in FIG. 1 is conducting between the reference node NB and the second contact NS2.
- FIG. 7 is a circuit diagram showing an example of a state in which the switch circuit SW1 of the LED lamp lighting device 100 shown in FIG. 1 is conducting between the reference node NB and the first contact NS1.
- FIG. 8 is a diagram showing a relationship between on / off of the switch times of a general bulb lamp lighting device and lighting of each bulb lamp.
- FIG. 8 is a diagram showing a relationship between on / off of the switch times of a general bulb lamp lighting device and lighting of each bulb lamp.
- FIG. 9 is a diagram illustrating a relationship between on / off of the switch circuit of the lamp lighting device 100 according to the first embodiment illustrated in FIG. 1 and lighting of each LED lamp.
- FIG. 10 is a circuit diagram illustrating an example of a system configuration including the LED lamp lighting device 100 according to the second embodiment which is an aspect of the present invention.
- FIG. 1 is a circuit diagram showing an example of the configuration of a system including an LED lamp lighting device 100 according to a first embodiment which is an aspect of the present invention.
- the example shown in FIG. 1 is an example of an LED lamp lighting device applied to a vehicle headlamp.
- 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.
- 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. Any one of the second contacts NS2 is conducted.
- the switch circuit SW1 switches between a state in which the reference node NB and the first contact NS1 are conducted and a state in which the reference node NB and the second contact NS2 are 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.
- the switch circuit SW1 includes a high beam (first lamp circuit L1 and second lamp circuit L2 are turned on) Hi and a low beam (second lamp circuit L2 is turned on) Lo of the vehicle headlamp described above. It is a switch for switching.
- the switch circuit SW1 is manually controlled by the user. That is, the switch circuit SW1 has a state in which the reference node NB and the first contact NS1 are electrically connected to each other and a state in which the reference node NB and the second contact NS2 are electrically connected by the user. Can be switched.
- 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.
- one end of the control switch element SCR may be connected to the first terminal Ta1, and the other end may be connected to the first contact NS1.
- the switch control circuit C1 also controls the control switch element SCR in accordance with a potential difference between one end and the other end of the control switch element SCR (potential difference between the second contact NS2 and the second terminal Ta2). Is to control.
- the magnitude (absolute value) of the potential difference between one end and the other end of the control switch element SCR (between the second contact NS2 and the second terminal Ta2) is set in advance.
- the control switch element SCR is turned on.
- the reference voltage is compared with the magnitude (absolute value) of the value (the same applies hereinafter).
- the magnitude (absolute value) of the potential difference between one end and the other end of the control switch element SCR is the reference value.
- the control switch element SCR is turned off.
- 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.
- the LED lamp lighting device 100 having the above configuration includes a plurality of LED lamps LH1, LH2, LL1, and LL2 connected in series between the first terminal Ta1 and the second terminal Ta2. LED lamps to be lit among the LED lamps LH1, LH2, LL1, and LL2 can be switched (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,
- the power switch element SX, the capacitor CX, the detection resistor RX, and the drive control circuit CON are included.
- 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 detection resistor RX is connected between the second input terminal TI2 and the second power supply terminal TS2.
- 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 is 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.
- FIG. 2 is a circuit diagram showing an example of a state in which the switch circuit of the LED lamp lighting device shown in FIG. 1 is conducting between the reference node and the second contact.
- FIG. 3 is a circuit diagram showing an example of a state in which the switch circuit of the LED lamp lighting device shown in FIG. 1 is conducting between the reference node and the first contact.
- 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 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 LED lamp lighting device 100 is configured to short-circuit any of the LED lamps that are lit from the state in which any of the plurality of LED lamps connected in series is lit. By short-circuiting the lit LED lamp, no current flows through the LED lamp, and as a result, the LED lamp is turned off.
- FIG. 4 is a circuit diagram showing an example of a state in which the switch circuit SW1 of the LED lamp lighting device 100 shown in FIG. 1 is conducting between the reference node NB and the second contact NS2.
- FIG. 5 is a circuit diagram showing an example of a state in which the switch circuit SW1 of the LED lamp lighting device 100 shown in FIG. 1 is conducting between the reference node NB and the first contact NS1.
- FIG. 6 is a circuit diagram showing an example of a state in which the switch circuit SW1 of the LED lamp lighting device 100 shown in FIG. 1 is electrically connected to the reference node NB and the second contact NS2.
- FIG. 7 is a circuit diagram showing an example of a state in which the switch circuit SW1 of the LED lamp lighting device 100 shown in FIG.
- FIG. 1 is conducting between the reference node NB and the first contact NS1.
- FIG. 8 is a diagram showing a relationship between on / off of the switch times of a general bulb lamp lighting device and lighting of each bulb lamp.
- FIG. 9 is a diagram illustrating a relationship between on / off of the switch circuit of the lamp lighting device 100 according to the first embodiment illustrated in FIG. 1 and lighting of each LED lamp.
- the state of the switch circuit SW1 is the same as the state shown in FIG.
- the switch circuit SW1 is switched by the user so that the high beam lamp Hi is selected.
- the switch control circuit C1 has the magnitude of the potential difference between the one end and the other end of the control switch element SCR (between the second contact NS2 and the second terminal Ta2) (absolute If the value is less than the reference voltage, the control switch element SCR is turned off.
- the voltage between the first power supply terminal TS1 and the second power supply terminal TS2 rises to the specified voltage.
- the current IX supplied from the lamp driving power supply 10 flows through a path of “second terminal Ta2 ⁇ control switch element SCR ⁇ switch circuit SW1 ⁇ first lamp circuit L1 ⁇ first terminal Ta1”.
- the switch circuit SW1 is switched by the user so that the low beam lamp Lo is selected.
- the switch circuit SW1 is switched by the user so that the high beam lamp Hi is selected.
- the switch circuit SW1 is operated so that the reference node NB and the second contact NS2 are electrically connected. However, no current flows through the first ramp circuit L1.
- the switch circuit SW1 is switched by the user so that the low beam lamp Lo is selected.
- the switch control circuit C1 does not operate, and the switch control circuit C1 does not affect the current i.
- the LED lamp lighting device 100 can turn on the remaining LED lamps by bypassing the failed LED lamp among the plurality of LED lamps connected in series.
- the operation when a failure occurs in the LED lamp can be made equivalent to the operation of a general bulb lamp lighting device.
- the lighting of the LED lamp can be controlled by the user's operation of the switch circuit.
- one end of the control switch element SCR may be connected to the first terminal Ta1 and the other end may be connected to the first contact NS1.
- one end of the control switch element SCR is connected to the first terminal Ta1, and the other end of the control switch element SCR is connected to the first contact NS1.
- FIG. 10 is a circuit diagram showing an example of a system configuration including the LED lamp lighting device 100 according to the second embodiment which is an aspect of the present invention.
- the same reference numerals as those in FIG. 1 indicate the same configurations as those in the first embodiment.
- the LED lamp lighting device 100 includes a first terminal Ta1, a second terminal Ta2, a first lamp circuit L1, and a second lamp circuit L2, as in the first embodiment. , A switch circuit SW1, a control switch element SCR, and a switch control circuit C1.
- control switch element SCR has one end connected to the first terminal Ta1 and the other end connected to the first contact NS1.
- the control switch element SCR is a thyristor having a cathode connected to the first terminal Ta1 and an anode connected to the first contact NS1.
- the switch control circuit C1 also controls the control switch element SCR according to the potential difference between the one end and the other end of the control switch element SCR (potential difference between the first contact NS1 and the first terminal Ta1). Is to control.
- the switch control circuit C1 includes a first control resistor Rs, a second control resistor Rt, and a Zener diode Ze as in the first embodiment.
- the first control resistor Rs has one end connected to the first terminal Ta1 and the other end connected to the gate (control terminal) of a 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 first contact NS1.
- the switch control circuit C1 monitors the voltage between the first terminal Ta1 and the first contact NS1 by the first control resistor Rs, the second control resistor Rt, and the Zener diode Ze. It is configured.
- 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.
- the other configurations and operations of the LED lamp lighting device 100 according to the second embodiment are the same as those in the first embodiment.
- the LED lamp lighting device as in the first embodiment, among the plurality of LED lamps connected in series, the failed LED lamp is bypassed and the remaining LED lamps are lit. be able to.
- the operation when a failure occurs in the LED lamp can be made equivalent to the operation of a general bulb lamp lighting device. .
- the lighting of the LED lamp can be controlled by the user's operation of the switch circuit.
- the LED lamp of the first lamp circuit is a high beam lamp of a vehicle headlamp
- the LED lamp of the second lamp circuit is a low beam lamp of the headlamp.
- 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
既述のように、このLEDランプ点灯装置においては、複数のLEDランプが直列に接続されている。 Thereby, an LED open error can be detected with a simple circuit configuration, and an LED voltage that does not cause the LED open error can be determined.
As described above, in this LED lamp lighting device, a plurality of LED lamps are connected in series.
ランプ駆動電源の低電位側の第1の電源端子と高電位側の第2の電源端子との間に接続され、前記ランプ駆動電源から駆動電流の供給を受け、前記駆動電流により直列に接続された複数のLEDランプを点灯するLEDランプ点灯装置であって、
前記第1の電源端子に接続される第1の端子と、
前記第2の電源端子に接続される第2の端子と、
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、第1の接点との間が導通した状態と、前記基準ノードと、第2の接点との間が導通した状態とを切り替えるスイッチ回路と、
一端が前記第1の端子に接続され且つ他端が前記第1の接点に接続され、又は、一端が前記第2の接点に接続され且つ他端が前記第2の端子に接続された制御用スイッチ素子と、
前記制御用スイッチ素子の前記一端と前記他端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、
前記制御用スイッチ素子の一端と他端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、
前記制御用スイッチ素子の一端と他端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。 An LED lamp lighting device according to an embodiment according to one aspect of the present invention,
Connected between a first power supply terminal on the low potential side and a second power supply terminal on the high potential side of the lamp drive power supply, receives a drive current from the lamp drive power supply, and is connected in series by the drive current. An LED lamp lighting device for lighting a plurality of LED lamps,
A first terminal connected to the first power supply terminal;
A second terminal connected to the second power supply terminal;
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 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 Circuit,
A switch for switching between a state in which the reference node connected to the other end of the first ramp circuit and the first contact point are in conduction, and a state in which the reference node and the second contact point are in conduction. Circuit,
One end connected to the first terminal and the other end connected to the first contact, or one end connected to the second contact and the other end connected to the second terminal A switch element;
A switch control circuit for controlling the control switch element according to a potential difference between the one end and the other end of the control switch element,
The switch control circuit includes:
When the magnitude of the potential difference between one end and the other end of the control switch element 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 one end and the other end of the control switch element is less than the reference voltage, the control switch element is turned off.
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する
ことを特徴とする。 In the LED lamp lighting device,
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 preset specified voltage to be a constant voltage.
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。 In the LED lamp lighting device,
The control switch element is a thyristor having a cathode connected to the second contact and an anode connected to the second terminal.
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。 In the LED lamp lighting device,
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.
前記制御用スイッチ素子は、カソードが前記第1の端子に接続され、アノードが前記第1の接点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1に記載のLEDランプ点灯装置。 In the LED lamp lighting device,
2. The LED lamp lighting device according to
前記スイッチ制御回路は、
一端が前記第1の端子に接続され、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1の接点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。 In the LED lamp lighting device,
The switch control circuit includes:
A first control resistor having one end connected to the first terminal 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 first contact.
前記ランプ駆動電源は、
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。 In the LED lamp lighting device,
The lamp driving power source is
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;
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. 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.
前記ランプ駆動電源は、
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。 In the LED lamp lighting device,
The lamp driving power source is
A detection resistor connected between the second input terminal and the second power supply terminal;
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.
前記スイッチ回路は、使用者により手動で、前記基準ノードと前記第1の接点との間を導通する状態と、前記基準ノードと前記第2の接点との間を導通する状態とを、切り替えられるようになっている
ことを特徴とする。 In the LED lamp lighting device,
The switch circuit can be manually switched between a state in which the reference node and the first contact point are conducted and a state in which the reference node and the second contact point are conducted by a user. It is characterized by that.
ランプ駆動電源の低電位側の第1の電源端子と高電位側の第2の電源端子との間に接続され、前記ランプ駆動電源から駆動電流の供給を受け、前記駆動電流により直列に接続された複数のLEDランプを点灯するLEDランプ点灯装置であって、前記第1の電源端子に接続される第1の端子と、前記第2の電源端子に接続される第2の端子と、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、第1の接点との間が導通した状態と、前記基準ノードと、第2の接点との間が導通した状態とを切り替えるスイッチ回路と、一端が前記第1の端子に接続され且つ他端が前記第1の接点に接続され、又は、一端が前記第2の接点に接続され且つ他端が前記第2の端子に接続された制御用スイッチ素子と、を備えるLEDランプ点灯装置の制御方法であって、
前記制御用スイッチ素子の一端と他端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、
前記制御用スイッチ素子の一端と他端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。 The control method of the LED lamp lighting device according to the embodiment according to one aspect of the present invention,
Connected between a first power supply terminal on the low potential side and a second power supply terminal on the high potential side of the lamp drive power supply, receives a drive current from the lamp drive power supply, and is connected in series by the drive current. An LED lamp lighting device for lighting a plurality of LED lamps, a first terminal connected to the first power supply terminal, a second terminal connected to the second power supply terminal, and one It is composed of an LED lamp or a plurality of LED lamps connected in series, one end of which is composed of a first lamp circuit connected to the first terminal and one LED lamp or a plurality of LED lamps connected in series. One end connected to the other end of the first lamp circuit, the other end connected to the second lamp circuit connected to the second terminal, and the other end of the first lamp circuit. Lead between the reference node and the first contact A switch circuit that switches between the connected state, the reference node, and a state in which the second contact is conducted, one end connected to the first terminal and the other end connected to the first contact, Or a control switch element having one end connected to the second contact and the other end connected to the second terminal, and a control method of an LED lamp lighting device comprising:
When the magnitude of the potential difference between one end and the other end of the control switch element 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 one end and the other end of the control switch element is less than the reference voltage, the control switch element is turned off.
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。 As shown in FIG. 1, 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.
第1の制御抵抗Rsは、一端が第1の端子Ta1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。 For example, the switch control circuit C1 includes a first control resistor Rs, a second control resistor Rt, and a Zener diode Ze as in the first embodiment.
The first control resistor Rs has one end connected to the first terminal Ta1 and the other end connected to the gate (control terminal) of a thyristor (control switch element) SCR.
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
RX 検出抵抗
CON 駆動制御回路
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 DESCRIPTION OF
Claims (10)
- ランプ駆動電源の低電位側の第1の電源端子と高電位側の第2の電源端子との間に接続され、前記ランプ駆動電源から駆動電流の供給を受け、前記駆動電流により直列に接続された複数のLEDランプを点灯するLEDランプ点灯装置であって、
前記第1の電源端子に接続される第1の端子と、
前記第2の電源端子に接続される第2の端子と、
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、第1の接点との間が導通した状態と、前記基準ノードと、第2の接点との間が導通した状態とを切り替えるスイッチ回路と、
一端が前記第1の端子に接続され且つ他端が前記第1の接点に接続され、又は、一端が前記第2の接点に接続され且つ他端が前記第2の端子に接続された制御用スイッチ素子と、
前記制御用スイッチ素子の一端と他端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、
前記制御用スイッチ素子の一端と他端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、
前記制御用スイッチ素子の一端と他端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LEDランプ点灯装置。 Connected between a first power supply terminal on the low potential side and a second power supply terminal on the high potential side of the lamp drive power supply, receives a drive current from the lamp drive power supply, and is connected in series by the drive current. An LED lamp lighting device for lighting a plurality of LED lamps,
A first terminal connected to the first power supply terminal;
A second terminal connected to the second power supply terminal;
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 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 Circuit,
A switch for switching between a state in which the reference node connected to the other end of the first ramp circuit and the first contact point are in conduction, and a state in which the reference node and the second contact point are in conduction. Circuit,
One end connected to the first terminal and the other end connected to the first contact, or one end connected to the second contact and the other end connected to the second terminal A switch element;
A switch control circuit for controlling the control switch element according to a potential difference between one end and the other end of the control switch element,
The switch control circuit includes:
When the magnitude of the potential difference between one end and the other end of the control switch element is equal to or higher than a preset reference voltage, the control switch element is turned on,
The LED switch lighting device, wherein when the magnitude of the potential difference between one end and the other end of the control switch element is less than the reference voltage, the control switch element is turned off. - 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する
ことを特徴とする請求項1に記載のLEDランプ点灯装置。 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 2. The LED lamp lighting device according to claim 1, wherein the output voltage output during the period is increased to a predetermined voltage set in advance to be a constant voltage. - 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1に記載のLEDランプ点灯装置。 2. The LED lamp lighting device according to claim 1, wherein the control switch element is a thyristor having a cathode connected to the second contact and an anode connected to the second terminal. - 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3に記載のLEDランプ点灯装置。 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;
The LED lamp lighting device according to claim 3, further comprising: a Zener diode having an anode connected to the other end of the second control resistor and a cathode connected to the second terminal. - 前記制御用スイッチ素子は、カソードが前記第1の端子に接続され、アノードが前記第1の接点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1に記載のLEDランプ点灯装置。 2. The LED lamp lighting device according to claim 1, wherein the control switch element is a thyristor having a cathode connected to the first terminal and an anode connected to the first contact. - 前記スイッチ制御回路は、
一端が前記第1の端子に接続され、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1の接点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5に記載のLEDランプ点灯装置。 The switch control circuit includes:
A first control resistor having one end connected to the first terminal 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;
The LED lamp lighting device according to claim 5, further comprising: a Zener diode having an anode connected to the other end of the second control resistor and a cathode connected to the first contact. - 前記ランプ駆動電源は、
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
ことを特徴とする請求項1に記載のLEDランプ点灯装置。 The lamp driving power source is
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;
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. 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 The LED lamp lighting device according to claim 1, further comprising: a drive control circuit that controls the power switch element so that a voltage between them becomes a preset specified voltage. - 前記ランプ駆動電源は、
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7に記載のLEDランプ点灯装置。 The lamp driving power source is
A detection resistor connected between the second input terminal and the second power supply terminal;
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 controls. The LED lamp lighting device of Claim 7 characterized by the above-mentioned. - 前記スイッチ回路は、使用者により手動で、前記基準ノードと前記第1の接点との間を導通する状態と、前記基準ノードと前記第2の接点との間を導通する状態とを、切り替えら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LEDランプ点灯装置。 The switch circuit can be manually switched between a state in which the reference node and the first contact point are conducted and a state in which the reference node and the second contact point are conducted by a user. The LED lamp lighting device according to claim 1, wherein the LED lamp lighting device is configured as described above. - ランプ駆動電源の低電位側の第1の電源端子と高電位側の第2の電源端子との間に接続され、前記ランプ駆動電源から駆動電流の供給を受け、前記駆動電流により直列に接続された複数のLEDランプを点灯するLEDランプ点灯装置であって、前記第1の電源端子に接続される第1の端子と、前記第2の電源端子に接続される第2の端子と、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、第1の接点との間が導通した状態と、前記基準ノードと、第2の接点との間が導通した状態とを切り替えるスイッチ回路と、一端が前記第1の端子に接続され且つ他端が前記第1の接点に接続され、又は、一端が前記第2の接点に接続され且つ他端が前記第2の端子に接続された制御用スイッチ素子と、を備えるLEDランプ点灯装置の制御方法であって、
前記制御用スイッチ素子の一端と他端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、
前記制御用スイッチ素子の一端と他端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LEDランプ点灯装置の制御方法。 Connected between a first power supply terminal on the low potential side and a second power supply terminal on the high potential side of the lamp drive power supply, receives a drive current from the lamp drive power supply, and is connected in series by the drive current. An LED lamp lighting device for lighting a plurality of LED lamps, a first terminal connected to the first power supply terminal, a second terminal connected to the second power supply terminal, and one It is composed of an LED lamp or a plurality of LED lamps connected in series, one end of which is composed of a first lamp circuit connected to the first terminal and one LED lamp or a plurality of LED lamps connected in series. One end connected to the other end of the first lamp circuit, the other end connected to the second lamp circuit connected to the second terminal, and the other end of the first lamp circuit. Lead between the reference node and the first contact A switch circuit that switches between the connected state, the reference node, and a state in which the second contact is conducted, one end connected to the first terminal and the other end connected to the first contact, Or a control switch element having one end connected to the second contact and the other end connected to the second terminal, and a control method of an LED lamp lighting device comprising:
When the magnitude of the potential difference between one end and the other end of the control switch element is equal to or higher than a preset reference voltage, the control switch element is turned on,
The method of controlling an LED lamp lighting device, wherein the control switch element is turned off when the magnitude of the potential difference between one end and the other end of the control switch element is less than the reference voltage.
Priority Applications (9)
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BR112014018489-5A BR112014018489B1 (en) | 2013-05-13 | 2013-05-13 | LAMP DRIVE POWER SUPPLY AND LAMP DRIVE POWER SUPPLY CONTROL METHOD |
EP13852349.3A EP2999312B1 (en) | 2013-05-13 | 2013-05-13 | Lamp drive power supply and method for controlling lamp drive power supply |
PCT/JP2013/063300 WO2014184847A1 (en) | 2013-05-13 | 2013-05-13 | Lamp drive power supply and method for controlling lamp drive power supply |
ES13852349.3T ES2651323T3 (en) | 2013-05-13 | 2013-05-13 | Lamp driver power supply and procedure to control the lamp driver power supply |
CN201380009757.0A CN104509212B (en) | 2013-05-13 | 2013-05-13 | LED lamp light-on device and control method thereof |
MYPI2014702087A MY170563A (en) | 2013-05-13 | 2013-05-13 | Lamp driving power supply and control method of the lamp driving power supply |
JP2014517286A JP5684432B1 (en) | 2013-05-13 | 2013-05-13 | Lamp driving power source and control method of lamp driving power source |
TW103114504A TWI554153B (en) | 2013-05-13 | 2014-04-22 | Lamp drive power and lamp drive power control method |
ZA2014/05502A ZA201405502B (en) | 2013-05-13 | 2014-07-25 | Lamp driving power supply and control method of the lamp driving power supply |
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PCT/JP2013/063300 WO2014184847A1 (en) | 2013-05-13 | 2013-05-13 | Lamp drive power supply and method for controlling lamp drive power supply |
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JP (1) | JP5684432B1 (en) |
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BR (1) | BR112014018489B1 (en) |
ES (1) | ES2651323T3 (en) |
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BR112014018489B1 (en) | 2021-12-14 |
BR112014018489A8 (en) | 2021-04-27 |
ES2651323T3 (en) | 2018-01-25 |
JP5684432B1 (en) | 2015-03-11 |
EP2999312A4 (en) | 2016-06-15 |
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CN104509212A (en) | 2015-04-08 |
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ZA201405502B (en) | 2016-05-25 |
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TWI554153B (en) | 2016-10-11 |
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