WO2019163078A1

WO2019163078A1 - Vehicular led lighting control device and method for controlling vehicular led lighting control device

Info

Publication number: WO2019163078A1
Application number: PCT/JP2018/006642
Authority: WO
Inventors: 豊隆 ▲高▼嶋
Original assignee: 新電元工業株式会社
Priority date: 2018-02-23
Filing date: 2018-02-23
Publication date: 2019-08-29
Also published as: JP6884919B2; JPWO2019163078A1

Abstract

This vehicular LED lighting control device is provided with: an LED thyristor having a cathode connected to an electric generator terminal; an LED capacitor having one end connected to an anode of the LED thyristor and having the other end connected to a ground terminal; an LED lamp having a cathode connected to one end of the LED capacitor; an LED resistor having one end connected to an anode of the LED lamp and having the other end connected to the other end of the LED capacitor; a voltage detection circuit for detecting an electric generator terminal voltage of the electric generator terminal; and an LED control circuit for controlling the LED thyristor on the basis of the electric generator terminal voltage detected by the voltage detection circuit and a capacitor voltage at the one end of the LED capacitor.

Description

VEHICLE LED LIGHTING CONTROL DEVICE AND CONTROL METHOD FOR VEHICLE LED LIGHTING CONTROL DEVICE

The present invention relates to a vehicle LED lighting control device and a control method for the vehicle LED lighting control device.

Conventionally, a vehicle LED lighting control device that controls the lighting of an LED lamp is known (see, for example, WO2016 / 189581).

In such a conventional vehicle LED lighting control device 100 (FIG. 2), for example, when the user starts kicking despite the ignition switch being off and the engine not starting, single-phase alternating current The generator G rotates to output an alternating voltage, and the LED voltage control circuit LZ turns on the thyristor S2, whereby the capacitor C is charged.

Thus, even when the engine is not started, the LED lamp X is turned on when a voltage necessary for lighting is applied to the LED lamp X.

Thus, in the conventional vehicle LED lighting control device, even when the AC voltage output from the single-phase AC generator is less than a predetermined range, such as at the time of kick start, the LED lamp is lit unnecessarily. There is.

Therefore, an object of the present invention is to provide a vehicle LED lighting control device capable of appropriately lighting an LED lamp when an AC voltage output from a single-phase AC generator is within a predetermined range. *

A vehicle LED lighting control device according to an embodiment of one aspect of the present invention is:
A vehicle LED lighting control device that rectifies an AC voltage output from a single-phase AC generator between a ground terminal and a generator terminal and supplies a driving voltage to the LED lamp to control lighting of the LED lamp. And
An LED thyristor having a cathode connected to the generator terminal;
An LED capacitor having one end connected to the anode of the LED thyristor and the other end connected to the ground terminal;
An LED lamp having a cathode connected to the one end of the LED capacitor;
An LED resistor having one end connected to the anode of the LED lamp and the other end connected to the other end of the LED capacitor;
A voltage detection circuit for detecting a generator terminal voltage of the generator terminal;
An LED control circuit that controls the LED thyristor based on the generator terminal voltage detected by the voltage detection circuit and the capacitor voltage at the one end of the LED capacitor;
In the state where the single-phase AC generator rotates and outputs the AC voltage,
The LED control circuit is:
When the generator terminal voltage detected by the voltage detection circuit is equal to or higher than a preset first threshold voltage, control to turn on the LED thyristor,
Thereafter, the LED capacitor is charged until the capacitor voltage reaches a voltage at which the LED lamp can be lit, thereby lighting the LED lamp,
Thereafter, when the capacitor voltage at the one end of the LED capacitor is equal to or higher than a preset second threshold voltage, the LED thyristor is controlled to be continuously turned on,
Thereafter, when the capacitor voltage becomes lower than the second threshold voltage, the LED thyristor is controlled to be turned off.

In the vehicle LED lighting control device,
After the single-phase AC generator starts rotating and starts outputting the AC voltage,
The LED control circuit is:
While the generator terminal voltage is less than the first threshold voltage, the LED thyristor is controlled to be turned off.

In the vehicle LED lighting control device,
The first threshold voltage is higher than the generator terminal voltage of the generator terminal when the single-phase AC generator G is rotated by a user kick start.

In the vehicle LED lighting control device,
The voltage detection circuit W is
Having a Zener diode with an anode connected to the generator terminal;
The LED control circuit is:
A first diode having a cathode connected to the cathode of the Zener diode;
A first resistor having one end connected to the anode of the first diode;
A transistor having one end connected to the ground terminal and a control terminal connected to the other end of the first resistor;
A second resistor having one end connected to the other end of the transistor;
A second diode having an anode connected to the other end of the second resistor and a cathode connected to the gate of the LED thyristor;
A third diode having a cathode connected to the one end of the LED capacitor and an anode connected to the anode of the first diode;

In the vehicle LED lighting control device,
The transistor is a PNP-type bipolar transistor having a base connected to the other end of the first resistor, an emitter connected to the ground terminal, and a collector connected to one end of the second resistor. To do.

In the vehicle LED lighting control device,
In the state where the single-phase AC generator rotates and outputs the AC voltage,
The LED control circuit is:
When the generator terminal voltage becomes equal to or higher than the first threshold voltage, the transistor is turned on due to the avalanche breakdown of the Zener diode, so that a current flows to the gate of the LED thyristor and the LED thyristor is turned on. To control and
Thereafter, by turning on the LED thyristor, the LED capacitor is charged until the capacitor voltage reaches a voltage at which the LED lamp can be turned on, thereby turning on the LED lamp X,
Thereafter, when the capacitor voltage at the one end of the LED capacitor is equal to or higher than the second threshold voltage, the transistor is turned on by the capacitor voltage, thereby causing a current to flow to the gate of the LED thyristor, Control to turn on the LED thyristor continuously,
Thereafter, when the capacitor voltage becomes lower than the second threshold voltage, the transistor is turned off by the capacitor voltage, thereby cutting off the current of the gate of the LED thyristor and turning off the LED thyristor. It is characterized by being controlled.

In the vehicle LED lighting control device,
An ignition switch for controlling ignition of an engine that drives the single-phase AC generator G is further provided.

In the vehicle LED lighting control device,
After the ignition switch is turned on, the single-phase AC generator starts generating power and outputs an AC voltage by the engine.

In the vehicle LED lighting control device,
A battery TB having a negative electrode connected to the ground terminal and a positive electrode connected to the battery terminal;
A battery thyristor having an anode connected to the generator terminal and a cathode connected to the battery terminal;
And a battery control circuit for controlling the battery thyristor so that the battery charging voltage becomes a preset target voltage value.

In the vehicle LED lighting control device,
The battery control circuit includes:
The battery thyristor is turned on when the generator terminal voltage of the generator terminal is equal to or higher than a positive specified voltage and the charge voltage of the positive electrode of the battery is less than the target voltage value.

In the vehicle LED lighting control device,
The ignition switch is operated on or off by a user.

In the vehicle LED lighting control device,
The vehicle LED lighting control device is mounted on a motorcycle,
The LED lamp is any one of the headlight, turn signal, tail lamp, position lamp, and meter illumination of the motorcycle.

In the vehicle LED lighting control device,
The apparatus further comprises a kick starter that kicks the single-phase AC generator by a user's kick.

In the vehicle LED lighting control device,
The kick starter starts power generation of the single-phase AC generator by kick start of the user, whereby an AC voltage is output from the coil of the single-phase AC generator, and the generator terminal voltage is applied to the generator terminal. Is applied.

A control method for a vehicle LED lighting control device according to an embodiment of one aspect of the present invention is as follows.
A vehicle LED lighting control device that rectifies an AC voltage output from a single-phase AC generator between a ground terminal and a generator terminal and supplies a driving voltage to the LED lamp to control lighting of the LED lamp. An LED thyristor having a cathode connected to the generator terminal, an LED capacitor having one end connected to the anode of the LED thyristor and the other end connected to the ground terminal, and a cathode being the LED capacitor An LED lamp connected to the one end of the LED, one end connected to the anode of the LED lamp, the other end connected to the other end of the LED capacitor, and a generator terminal of the generator terminal A voltage detection circuit for detecting a voltage, the generator terminal voltage detected by the voltage detection circuit, and a capacitor voltage at the one end of the LED capacitor. Zui and a control method for a vehicle LED lighting control device and a LED control circuit for controlling the LED thyristor,
In the state where the single-phase AC generator rotates and outputs the AC voltage,
The LED control circuit is:
When the generator terminal voltage detected by the voltage detection circuit is equal to or higher than a preset first threshold voltage, control to turn on the LED thyristor,
Thereafter, the LED capacitor is charged until the capacitor voltage reaches a voltage at which the LED lamp can be lit, thereby lighting the LED lamp,
Thereafter, when the capacitor voltage at the one end of the LED capacitor is equal to or higher than a preset second threshold voltage, the LED thyristor is controlled to be continuously turned on,
Thereafter, when the capacitor voltage becomes lower than the second threshold voltage, the LED thyristor is controlled to be turned off.

An LED lighting control device for a vehicle according to an aspect of the present invention rectifies an AC voltage output from a single-phase AC generator between a ground terminal and a generator terminal, and supplies a drive voltage to the LED lamp. An LED lighting control device for a vehicle that controls lighting of an LED lamp, wherein an LED thyristor having a cathode connected to a generator terminal, one end connected to an anode of the LED thyristor, and the other end connected to a ground terminal An LED capacitor having a cathode connected to one end of the LED capacitor, an LED resistor having one end connected to the anode of the LED lamp and the other end connected to the other end of the LED capacitor, and power generation Based on the voltage detection circuit for detecting the generator terminal voltage of the machine terminal, the generator terminal voltage detected by the voltage detection circuit, and the capacitor voltage at one end of the LED capacitor. There are provided an LED control circuit for controlling the LED thyristor, a.

In the state where the single-phase AC generator G rotates and outputs an AC voltage, the LED control circuit has a generator terminal voltage detected by the voltage detection circuit equal to or higher than a preset first threshold voltage (negative voltage). Then, the LED thyristor is controlled to be turned on, and then the LED capacitor is charged until the capacitor voltage V2 reaches a voltage at which the LED lamp can be turned on. When the capacitor voltage at one end of the capacitor is equal to or higher than a preset second threshold voltage, the LED thyristor is controlled to be continuously turned on. After that, when the capacitor voltage becomes lower than the second threshold voltage, the LED thyristor is turned on. Control to turn off (do not turn on).

Thereby, according to the vehicle LED lighting control device of the present invention, the LED lamp can be appropriately lit when the AC voltage output from the single-phase AC generator is within a predetermined range.

FIG. 1 is a diagram illustrating an example of a configuration of a vehicle LED lighting control apparatus 1000 according to the first embodiment. FIG. 2 is a diagram illustrating an example of a configuration of a conventional vehicle LED lighting control device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram illustrating an example of a configuration of a vehicle LED lighting control apparatus 1000 according to the first embodiment.

As shown in FIG. 1, the vehicle LED lighting control device 1000 according to the first embodiment is mounted on a vehicle (not shown) such as a two-wheeled vehicle using an AC voltage generated by a single-phase AC generator G. The lighting of the LED lamp X is controlled. The vehicle LED lighting control device 1000 is mounted on, for example, the aforementioned vehicle (two-wheeled vehicle).

In particular, as shown in FIG. 1, the vehicle LED lighting control device 1000 rectifies the AC voltage output from the single-phase AC generator G between the ground terminal GND and the generator terminal TG, A driving voltage is supplied to control the lighting of the LED lamp X.

Here, for example, as shown in FIG. 1, the vehicle LED lighting control device 1000 includes an LED thyristor SWX, an LED capacitor CX, an LED lamp X, an LED resistor RX, and a voltage detection circuit W. , LED control circuit Z, ignition control circuit IGC, ignition switch IGSW, battery BAT, battery thyristor SWY, battery control circuit Y, kick starter K, and single-phase AC generator G.

The single-phase AC generator G has a coil LG having one end connected to the generator terminal TG and the other end connected to the ground terminal GND. The potential of the ground terminal GND is not limited to 0 V, and is set to a fixed potential lower than the power supply voltage so that at least the LED lamp can be turned on.

Also, the single-phase AC generator G generates an AC voltage for charging the battery BAT and lighting the LED lamp X, and outputs the AC voltage from both ends of the coil LG.

This single-phase AC generator G is an alternator that is directly driven by an engine of a vehicle such as a motorcycle. Moreover, this single-phase alternating current generator G may be driven by a user's kick drive.

As will be described later, the single-phase AC generator G and the LED control circuit Z constitute a vehicle LED lighting control device 1000.

In the LED thyristor SWX, the cathode is connected to the generator terminal TG, the anode is connected to one end of the LED capacitor CX, and the current flowing through the gate is controlled by the LED control circuit Z. The LED thyristor SWX is controlled to be turned on / off by a current flowing through the gate.

The LED capacitor CX has one end connected to the anode of the LED thyristor SWX and the other end connected to the ground terminal GND. The voltage charged in the LED capacitor CX is applied to the LED lamp X.

Further, the LED lamp X has a cathode connected to one end of the LED capacitor CX.

The LED lamp X has at least one LED element. For example, the LED lamp X is configured by connecting a plurality of LED elements in series.

The LED lamp X is, for example, any one of the above-described two-wheeled vehicle headlight, turn signal, tail lamp, position lamp, and meter illumination.

Further, the LED resistor RX has one end connected to the anode of the LED lamp X and the other end connected to the other end of the LED capacitor CX.

Further, the voltage detection circuit W detects the generator terminal voltage V1 of the generator terminal TG. And the voltage detection circuit W outputs the signal which detected the generator terminal voltage V1 of the generator terminal TG to the 1st input (the cathode of the 1st diode D1) of LED control circuit Z. .

In this voltage detection circuit W, for example, as shown in FIG. 1, the anode is connected to the generator terminal TG, and the cathode is connected to the first input of the LED control circuit Z (the cathode of the first diode D1). It has a Zener diode.

The LED control circuit Z controls the LED thyristor SWX based on the generator terminal voltage V1 detected by the voltage detection circuit W and the capacitor voltage V2 at one end of the LED capacitor CX.

For example, as shown in FIG. 1, the LED control circuit Z includes a first diode D1, a first resistor R1, a transistor M, a second resistor R2, a second diode D2, and a third diode. The diode D3.

The cathode of the first diode D1 is connected to the cathode of the Zener diode W.

Also, one end of the first resistor R1 is connected to the anode of the first diode D1 and the anode of the third diode D3.

The transistor M has one end (emitter) connected to the ground terminal GND and the control terminal (base) connected to the other end of the first resistor R1.

For example, as shown in FIG. 1, the transistor M has a base connected to the other end of the first resistor R1, an emitter connected to the ground terminal GND, and a collector connected to one end of the second resistor R2. This is a PNP-type bipolar transistor.

Further, one end of the second resistor R2 is connected to the other end (collector) of the transistor M.

The second diode D2 has an anode connected to the other end of the second resistor R2, and a cathode connected to the gate of the LED thyristor SWX.

The third diode D3 has a cathode connected to one end of the LED capacitor CX and an anode connected to the anode of the first diode D1.

The LED control circuit Z is configured such that the generator terminal voltage V1 detected by the voltage detection circuit W is set to a first threshold voltage (negative voltage) in a state where the single-phase AC generator G rotates and outputs an AC voltage. ) When the above size is reached, the LED thyristor SWX is controlled to be turned on, and then the LED capacitor CX is charged until the capacitor voltage V2 reaches a voltage at which the LED lamp X can be turned on. X is turned on, and then the LED thyristor SWX is continuously turned on when the capacitor voltage V2 at one end of the LED capacitor CX is greater than or equal to a preset second threshold voltage (negative voltage). Thereafter, when the capacitor voltage V2 becomes lower than the second threshold voltage, the LED thyristor SWX is turned off (not turned on). It is adapted to control.

More specifically, the LED control circuit Z, when the single-phase AC generator G rotates and outputs an AC voltage, generates a Zener diode (voltage) when the generator terminal voltage V1 becomes equal to or higher than the first threshold voltage. Detection circuit) When the transistor M is turned on by avalanche breakdown of W, a current is supplied to the gate of the LED thyristor SWX, and the LED thyristor SWX is turned on.

Thereafter, the LED control circuit Z turns on the LED thyristor SWX, whereby the LED capacitor CX is charged until the capacitor voltage V2 reaches a voltage at which the LED lamp X can be turned on, thereby turning on the LED lamp X. It is like that.

After that (after the LED lamp X is turned on), the LED control circuit Z turns on the transistor M by the capacitor voltage V2 when the capacitor voltage V2 at one end of the LED capacitor CX is equal to or higher than the second threshold voltage. Thus, a current is supplied to the gate of the LED thyristor SWX, and the LED thyristor SWX is controlled to be continuously turned on.

Thereafter, when the capacitor voltage becomes less than the second threshold voltage, the LED control circuit Z shuts off the current of the gate of the LED thyristor SWX by turning off the transistor M by the capacitor voltage V2, and the LED thyristor. SWX is controlled to be turned off (not turned on).

In addition, after the single-phase AC generator G starts rotating and starts to output an AC voltage, the LED control circuit Z performs LED thyristors until the generator terminal voltage V1 is less than the first threshold voltage. Is controlled so that it is turned off (not turned on).

The first threshold voltage described above is higher (the absolute value is larger) than the generator terminal voltage V1 (negative voltage) of the generator terminal TG when the single-phase AC generator G is rotated by the user's kick start. ).

In this way, the LED control circuit Z controls the LED thyristor SWX for hysteresis based on the generator terminal voltage V1 at which the single-phase AC generator G rotates and outputs an AC voltage, and sets the LED lamp X to a predetermined value. It is designed to light up in the range.

Further, the ignition control circuit IGC operates by being supplied with the charging voltage of the battery BAT via the ignition switch IGSW, and ignites the engine E.

Further, the ignition switch IGSW is turned on or off by the user. The ignition switch IGSW is turned on to conduct between one end and the other end, and is turned off to block between one end and the other end.

The ignition switch IGSW is turned on / off to control the ignition of the engine that drives the single-phase AC generator G.

For example, after the ignition switch TGSW is turned on by a user operation, the ignition control circuit IGC ignites and drives the engine E, and the single-phase AC generator G starts generating power by the driven engine E, and the coil LG AC voltage is output from.

The battery BAT has a negative electrode connected to the ground terminal TG and a positive electrode connected to the battery terminal TB. This battery B is, for example, the battery of the motorcycle described above.

The battery thyristor SWY has an anode connected to the generator terminal TG and a cathode connected to the battery terminal TB, and the battery control circuit Y controls the current flowing through the gate. The battery thyristor SWY is controlled to be turned on / off by a current flowing through the gate.

Also, the battery control circuit Y controls the battery thyristor SWY so that the charging voltage of the battery BAT becomes a preset target voltage value.

The battery control circuit Y turns on the battery thyristor SWY when the generator terminal voltage V1 of the generator terminal TG is equal to or higher than a positive specified voltage and the charge voltage of the positive electrode of the battery BAT is less than the target voltage value. It has become. Thereby, the charging current is supplied from the single-phase AC generator G to the battery B.

That is, when the generator terminal voltage V1 of the single-phase AC generator G is equal to or higher than the specified voltage and the charging voltage of the battery BAT is lower than the target voltage, the charging voltage of the battery BAT approaches the target voltage. The battery BAT is charged.

On the other hand, the battery control circuit Y is used when the generator terminal voltage V1 of the generator terminal TG output from the single-phase AC generator G is less than a positive specified voltage or a negative voltage, or when the charging voltage of the battery BAT is already present. When the voltage is equal to or higher than the target voltage, the battery thyristor SWY is turned off. Thereby, supply of the charging current from the single-phase AC generator G to the battery BAT is stopped.

That is, when the generator terminal voltage V1 of the single-phase AC generator G is less than the positive specified voltage or a negative voltage, or when the charging voltage of the battery BAT is equal to or higher than the target voltage, charging of the battery BAT is stopped. .

In addition, the kick starter K is configured to kick start the single-phase AC generator G by a user's kick operation.

The kick starter K starts the power generation of the single-phase AC generator G by the user's kick start, whereby an AC voltage is output from the coil LG of the single-phase AC generator G, and the generator terminal TG is connected to the generator terminal TG. A voltage V1 is applied.

Next, an example of a control method of the vehicle LED lighting control device 1000 having the above configuration will be described. When the ignition switch IGSW is off, the above-described engine is not driven, and the single-phase AC generator G is basically not generating power. However, even when the ignition switch IGSW is off, the AC voltage is output from the coil LG of the single-phase AC generator G by starting power generation of the single-phase AC generator G by the user's kick start, It is assumed that the generator terminal voltage V1 may be applied to the generator terminal TG.

First, when an ignition switch IGSW is turned on by a user operation and then a starter switch (not shown) is turned on, the engine E is rotated and the engine E is ignited by a single-phase AC generator G or a cell motor (not shown). . Thereby, an engine starts and the electric power generation of the single phase alternating current generator G is started.

Then, after the single-phase AC generator G starts rotating and starts outputting the AC voltage, the LED control circuit Z determines that the LED thyristor SWX is used until the generator terminal voltage V1 is less than the first threshold voltage. Control to turn off (do not turn on).

More specifically, after the single-phase AC generator G starts rotating and starts outputting the AC voltage, the LED control circuit Z determines that the Zener diode is in a state where the generator terminal voltage V1 is less than the first threshold voltage. (Voltage detection circuit) Since no avalanche breakdown of W occurs and the transistor M is turned off, control is performed so that no current flows to the gate of the LED thyristor SWX and the LED thyristor SWX is turned off.

Thus, no current is supplied to the LED capacitor CX, and the LED capacitor CX is not charged.

The LED control circuit Z is configured so that the generator terminal voltage V1 detected by the voltage detection circuit W is a first threshold voltage (negative) in a state where the single-phase AC generator G rotates and outputs an AC voltage. When the voltage becomes larger than the above, the LED thyristor SWX is controlled to be turned on.

More specifically, in a state where the single-phase AC generator G rotates and outputs an AC voltage, the LED control circuit Z determines that a zener diode (voltage detection) when the generator terminal voltage V1 becomes equal to or higher than the first threshold voltage. Circuit) When the transistor M is turned on by the avalanche breakdown of W, a current is supplied to the gate of the LED thyristor SWX, and the LED thyristor SWX is turned on.

As a result, when the output voltage of the single-phase AC generator G has a negative polarity, current is supplied to the LED capacitor CX so that the voltage of the LED capacitor CX approaches a preset value. The capacitor CX is charged.

Thereafter, the LED control circuit Z turns on the LED lamp X by charging the LED capacitor CX until the capacitor voltage V2 reaches a voltage at which the LED lamp X can be turned on.

More specifically, the LED control circuit Z turns on the LED thyristor SWX so that the LED capacitor CX is charged until the capacitor voltage V2 reaches a voltage at which the LED lamp X can be turned on. Turn on X.

Thereafter, when the capacitor voltage V2 at one end of the LED capacitor CX is equal to or higher than a preset second threshold voltage, the LED control circuit Z performs control so that the LED thyristor SWX is continuously turned on.

More specifically, when the capacitor voltage V2 at one end of the LED capacitor CX is equal to or higher than the second threshold voltage, the LED control circuit Z turns on the transistor M with the capacitor voltage V2, thereby causing the LED thyristor SWX to turn on. The LED thyristor SWX is controlled to continue to be turned on by passing a current through the gate.

Thus, even when the generator terminal voltage V1 is less than the first threshold voltage described above, when the capacitor voltage V2 at one end of the LED capacitor CX is greater than or equal to the second threshold voltage, Current is supplied to the LED capacitor CX, and the LED lamp X can be continuously lit.

Thereafter, when the capacitor voltage V2 becomes lower than the second threshold voltage, the LED control circuit Z performs control so that the LED thyristor SWX is turned off (not turned on).

More specifically, the LED control circuit Z shuts off the current of the gate of the LED thyristor SWX by turning off the transistor M by the capacitor voltage V2 when the capacitor voltage becomes lower than the second threshold voltage. The LED thyristor SWX is controlled to be turned off (not turned on).

Thus, when the capacitor voltage V2 becomes lower than the second threshold voltage, no current is supplied to the LED capacitor CX, and the LED capacitor CX is not charged. Then, when the capacitor voltage V2 becomes equal to or lower than the voltage at which the LED lamp X can be turned on, the LED lamp X is turned off.

Here, as described above, after the single-phase AC generator G starts rotating and the output of the AC voltage is started, the LED control circuit Z starts until the generator terminal voltage V1 is less than the first threshold voltage. In the meantime, the LED thyristor SWX is controlled to be turned off (not turned on).

Furthermore, as described above, the first threshold voltage (negative voltage) is the generator terminal voltage V1 (negative voltage) of the generator terminal TG when the single-phase AC generator G is rotated by the user's kick start. Is set to be higher (absolute value is larger).

As a result, when the single-phase AC generator G is rotated by the kick start of the user, the LED control circuit Z controls the LED thyristor SWX to be turned off (not to be turned on), so that the LED lamp X is lit. Can be suppressed.

That is, since the AC voltage output from the single-phase AC generator G is less than the first threshold voltage even when the user kicks the start with the ignition switch IGSW turned off, the LED control circuit Z has the LED lamp X Do not light up. Then, after the engine E is started, the LED control circuit Z determines that the AC voltage output from the single-phase AC generator G is within a predetermined range (after the first threshold voltage is exceeded, the first threshold voltage is higher than the first threshold voltage). The LED lamp X is turned on in a range equal to or higher than the low second threshold voltage.

Therefore, the vehicle LED lighting control device 1000 can appropriately light the LED lamp when the AC voltage output from the single-phase AC generator G is within a predetermined range.

As a result, according to the vehicle LED lighting control device of the present invention, the LED lamp can be appropriately lit when the AC voltage output from the single-phase AC generator is within a predetermined range (the ignition switch is in an off state). Thus, even if the user starts kicking, the LED lamp is not turned on, and the LED lamp is turned on after the engine is started).

In the second embodiment, another example of the control method of the vehicle LED lighting control device 1000 will be described. Here, the control method of the vehicle LED lighting control device 1000 related to the charging of the battery BAT according to the second embodiment will be described, which is executed together with the control method of the vehicle LED lighting control device 1000 related to the LED lamp X described in the first embodiment. To do.

As described above, the battery control circuit Y of the vehicle LED lighting control device 1000 controls the battery thyristor SWY so that the charging voltage of the battery BAT becomes a preset target voltage value.

The battery control circuit Y turns on the battery thyristor SWY when the generator terminal voltage V1 of the generator terminal TG is equal to or higher than the positive specified voltage and the positive charging voltage of the battery BAT is lower than the target voltage value.

Thereby, a charging current is supplied from the single-phase AC generator G to the battery B.

On the other hand, the battery control circuit Y is used when the generator terminal voltage V1 of the generator terminal TG output from the single-phase AC generator G is less than a positive specified voltage or a negative voltage, or when the charging voltage of the battery BAT is already present. When the voltage is equal to or higher than the target voltage, the battery thyristor SWY is turned off.

This stops the supply of charging current from the single-phase AC generator G to the battery BAT.

That is, when the generator terminal voltage V1 of the single-phase AC generator G is less than the positive specified voltage or a negative voltage, or when the charging voltage of the battery BAT is equal to or higher than the target voltage, charging of the battery BAT is stopped. It will be.

As described above, the vehicle LED lighting control device according to one aspect of the present invention rectifies the AC voltage output from the single-phase AC generator G between the ground terminal GND and the generator terminal TG, and the LED lamp Is a vehicle LED lighting control device that controls the lighting of the LED lamp by supplying a drive voltage to the LED thyristor SWX with the cathode connected to the generator terminal TG and one end connected to the anode of the LED thyristor. The other end of the LED capacitor CX is connected to the ground terminal, the other end of the LED capacitor X is connected to the anode of the LED lamp X, and the other end is connected to the anode of the LED lamp X. LED resistor RX connected to the other end of voltage, voltage detection circuit W for detecting the generator terminal voltage of the generator terminal, and generator terminal voltage detected by the voltage detection circuit Comprising 1, based on the capacitor voltage V2 of one end of the LED capacitor, and the LED control circuit Z that controls the LED thyristor, a.

Then, in a state where the single-phase AC generator G rotates and outputs an AC voltage, the LED control circuit Z has a first threshold voltage (negative voltage) set in advance by the generator terminal voltage V1 detected by the voltage detection circuit. ) When the above is reached, control is performed so that the LED thyristor is turned on, and then the LED capacitor is charged until the capacitor voltage V2 reaches a voltage at which the LED lamp can be turned on. When the capacitor voltage at one end of the LED capacitor is equal to or higher than a preset second threshold voltage, the LED thyristor is controlled to continue to be turned on, and then the LED voltage is less than the second threshold voltage. Control the thyristor to turn off (do not turn on).

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

1000 Vehicle LED Lighting Control Device SWX LED Thyristor CX LED Capacitor X LED Lamp RX LED Resistance W Voltage Detection Circuit Z LED Control Circuit IGC Ignition Control Circuit IGSW Ignition Switch BAT Battery SWY Battery Thyristor Y Battery Control Circuit K Kick Starter G single-phase AC generator D1 first diode R1 first resistor M transistor R2 second resistor D2 second diode D3 third diode

Claims

A vehicle LED lighting control device that rectifies an AC voltage output from a single-phase AC generator between a ground terminal and a generator terminal and supplies a driving voltage to the LED lamp to control lighting of the LED lamp. And
An LED thyristor having a cathode connected to the generator terminal;
An LED capacitor having one end connected to the anode of the LED thyristor and the other end connected to the ground terminal;
An LED lamp having a cathode connected to the one end of the LED capacitor;
An LED resistor having one end connected to the anode of the LED lamp and the other end connected to the other end of the LED capacitor;
A voltage detection circuit for detecting a generator terminal voltage of the generator terminal;
An LED control circuit that controls the LED thyristor based on the generator terminal voltage detected by the voltage detection circuit and the capacitor voltage at the one end of the LED capacitor;
In the state where the single-phase AC generator rotates and outputs the AC voltage,
The LED control circuit is:
When the generator terminal voltage detected by the voltage detection circuit is equal to or higher than a preset first threshold voltage, control to turn on the LED thyristor,
Thereafter, the LED capacitor is charged until the capacitor voltage reaches a voltage at which the LED lamp can be lit, thereby lighting the LED lamp,
Thereafter, when the capacitor voltage at the one end of the LED capacitor is equal to or higher than a preset second threshold voltage, the LED thyristor is controlled to be continuously turned on,
Thereafter, when the capacitor voltage becomes lower than the second threshold voltage, the LED thyristor is controlled to be turned off. The vehicle LED lighting control device.
After the single-phase AC generator starts rotating and starts outputting the AC voltage,
The LED control circuit is:
2. The vehicle LED lighting control device according to claim 1, wherein the LED thyristor is controlled to be turned off while the generator terminal voltage is less than the first threshold voltage. 3.
2. The vehicle according to claim 1, wherein the first threshold voltage is higher than the generator terminal voltage of the generator terminal when the single-phase AC generator G is rotated by a user kick start. LED lighting control device.
The voltage detection circuit W is
Having a Zener diode with an anode connected to the generator terminal;
The LED control circuit is:
A first diode having a cathode connected to the cathode of the Zener diode;
A first resistor having one end connected to the anode of the first diode;
A transistor having one end connected to the ground terminal and a control terminal connected to the other end of the first resistor;
A second resistor having one end connected to the other end of the transistor;
A second diode having an anode connected to the other end of the second resistor and a cathode connected to the gate of the LED thyristor;
The vehicle LED lighting control according to claim 2, further comprising: a third diode having a cathode connected to the one end of the LED capacitor and an anode connected to the anode of the first diode. apparatus.
The transistor is a PNP-type bipolar transistor having a base connected to the other end of the first resistor, an emitter connected to the ground terminal, and a collector connected to one end of the second resistor. The vehicle LED lighting control device according to claim 4.
In the state where the single-phase AC generator rotates and outputs the AC voltage,
The LED control circuit is:
When the generator terminal voltage becomes equal to or higher than the first threshold voltage, the transistor is turned on due to the avalanche breakdown of the Zener diode, so that a current flows to the gate of the LED thyristor and the LED thyristor is turned on. To control and
Thereafter, by turning on the LED thyristor, the LED capacitor is charged until the capacitor voltage reaches a voltage at which the LED lamp can be turned on, thereby turning on the LED lamp X,
Thereafter, when the capacitor voltage at the one end of the LED capacitor is equal to or higher than the second threshold voltage, the transistor is turned on by the capacitor voltage, thereby causing a current to flow to the gate of the LED thyristor, Control to turn on the LED thyristor continuously,
Thereafter, when the capacitor voltage becomes lower than the second threshold voltage, the transistor is turned off by the capacitor voltage, thereby cutting off the current of the gate of the LED thyristor and turning off the LED thyristor. The vehicle LED lighting control device according to claim 4, wherein
The vehicle LED lighting control device according to claim 4, further comprising an ignition switch that controls ignition of an engine that drives the single-phase AC generator G.
The vehicular LED lighting control device according to claim 7, wherein after the ignition switch is turned on, the single-phase AC generator starts power generation by the engine and outputs an AC voltage.
A battery TB having a negative electrode connected to the ground terminal and a positive electrode connected to the battery terminal;
A battery thyristor having an anode connected to the generator terminal and a cathode connected to the battery terminal;
The vehicle LED lighting control device according to claim 4, further comprising: a battery control circuit that controls the battery thyristor so that the charging voltage of the battery becomes a preset target voltage value.
The battery control circuit includes:
The battery thyristor is turned on when the generator terminal voltage of the generator terminal is equal to or higher than a positive specified voltage and the charge voltage of the positive electrode of the battery is less than the target voltage value. The vehicle LED lighting control device according to the above.
The vehicle LED lighting control device according to claim 7, wherein the ignition switch is turned on or off by a user.
The vehicle LED lighting control device is mounted on a motorcycle,
The vehicle LED lighting control device according to claim 4, wherein the LED lamp is any one of a headlight, a blinker, a tail lamp, a position lamp, and a meter illumination of the motorcycle.
The vehicle LED lighting control device according to claim 3, further comprising a kick starter that kicks the single-phase AC generator by a user kick.
The kick starter starts power generation of the single-phase AC generator by kick start of the user, whereby an AC voltage is output from the coil of the single-phase AC generator, and the generator terminal voltage is applied to the generator terminal. The LED lighting control device for a vehicle according to claim 13, wherein:
A vehicle LED lighting control device that rectifies an AC voltage output from a single-phase AC generator between a ground terminal and a generator terminal and supplies a driving voltage to the LED lamp to control lighting of the LED lamp. An LED thyristor having a cathode connected to the generator terminal, an LED capacitor having one end connected to the anode of the LED thyristor and the other end connected to the ground terminal, and a cathode being the LED capacitor An LED lamp connected to the one end of the LED, one end connected to the anode of the LED lamp, the other end connected to the other end of the LED capacitor, and a generator terminal of the generator terminal A voltage detection circuit for detecting a voltage, the generator terminal voltage detected by the voltage detection circuit, and a capacitor voltage at the one end of the LED capacitor. Zui and a control method for a vehicle LED lighting control device and a LED control circuit for controlling the LED thyristor,
In the state where the single-phase AC generator rotates and outputs the AC voltage,
The LED control circuit is:
When the generator terminal voltage detected by the voltage detection circuit is equal to or higher than a preset first threshold voltage, control to turn on the LED thyristor,
Thereafter, the LED capacitor is charged until the capacitor voltage reaches a voltage at which the LED lamp can be lit, thereby lighting the LED lamp,
Thereafter, when the capacitor voltage at the one end of the LED capacitor is equal to or higher than a preset second threshold voltage, the LED thyristor is controlled to be continuously turned on,
Thereafter, when the capacitor voltage becomes lower than the second threshold voltage, the LED thyristor is controlled to be turned off. A control method for a vehicle LED lighting control device.