JPH09263178A - Vehicle headlamp lighting control device - Google Patents

Abstract

In a vehicle headlamp lighting control device, a simple and inexpensive structure is provided to prevent an exhaustion of a battery even when the engine is started well and the main switch is forgotten to be turned off. SOLUTION: PTC heater control means 28 and battery 2
2, the head lamp 10 is provided in parallel with the PTC heater 16, and the PTC heater control means 28 turns on the main switch 24 and then turns on the starter switch 20 to rotate the starter motor 18.
When the PTC heater 16 and the headlamp 10 are turned off and the starter switch 20 is turned off after the engine is operated, the operation of the engine is detected to detect the PTC heater 1.
6 is a lighting control device for a motorcycle headlamp that turns on 6 and the headlamp 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle headlamp lighting control device.

[0002]

2. Description of the Related Art Conventionally, in some countries, it is obligatory to turn on a headlamp during daytime driving, and safety of small vehicles, especially motorcycles, is being improved during driving. Normally, when the headlamp is constantly turned on, the headlamp is set to be always on when the main switch (ignition switch) is on.

[0003]

However, if the headlamp is constantly turned on when the main switch is ON, the headlamp will be turned on even when a large current is required at the time of starting the engine, so that the starter motor is supplied. There is an inconvenience that the available power is insufficient. Further, even if the main switch is turned on and the user forgets to turn it off, the headlamp continues to light up, which causes a problem that the battery runs out.

In order to solve such a problem, for example, as disclosed in Japanese Utility Model Laid-Open No. 59-57246, a headlamp lighting device is proposed in which the headlamp is not lit while the starter motor is operating. However, this device is dedicated to the control of the headlamps, and is therefore costly and complicated in structure.

Conventionally, a carburetor has a PTC (Positive Temp) for operating a starter plunger.
By providing an erasure coefficient) heater, and after starting the engine, the PTC heater heats the ceramic plate to expand the thermowax,
Although an auto choke for activating a starter plunger is known, a device for simultaneously controlling the PTC heater and the head lamp with the same control means has not been developed.

The present invention has been made in order to solve the above-mentioned conventional problems, and has a simple and inexpensive structure which effectively utilizes an existing control device for controlling a PTC heater.
An object of the present invention is to provide a vehicle headlamp lighting control device that prevents the battery from running out even when the engine is properly started and the main switch is forgotten to be turned off.

[0007]

The present invention has the following constitution in order to solve the above problems. That is, the present invention comprises a PTC heater control means for controlling the PTC heater while connecting a parallel circuit formed of a starter switch for operating the starter motor and the PTC heater, a battery, and a main switch in series. The PTC heater control means is configured to turn on the main switch and then turn on the starter switch. While the starter motor is rotating, the PTC heater and the head lamp are turned off, and when the starter switch is turned off after the engine is operated, the operation of the engine is detected and the PTC heater and the head lamp are turned on. Characteristic vehicle headlamps A lighting control device.

According to the present invention, while the starter motor is operating by turning on the main switch and then turning on the starter switch, the PTC heater control means turns off the headlamp as well as the PTC heater.
Is held in the state. Then, when the engine is operated by the starter motor and the starter switch is turned off,
The PTC heater control means detects the operation of the engine by, for example, a signal from the ignition coil, and turns on the PTC heater and the headlamp.

As a result, the headlamp is always off when the starter motor is in operation, so that a large current can be supplied to the starter motor and the engine can be started well. Also, the main switch is O
If the engine is not operating even in the N state, the headlamp and the PTC heater are in the OFF state, so that the battery consumption is reduced and the battery exhaustion is prevented even when the main switch is turned on and the switch is forgotten to be turned off. .

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this embodiment, the headlamp lighting control device of the present invention is applied to a motorcycle. FIG. 1 is a side view of the motorcycle according to this embodiment. FIG. 2 is a diagram showing a circuit of the lighting control device of the present embodiment.

As shown in FIG. 1, the motorcycle according to the present embodiment has a footrest space 6 between a handlebar 2 and a seat 4.
It is a so-called scooter type with a handle 2
It has a handle cover 8 for covering. A head lamp 10 is provided at the center of the front portion of the handle cover 8. Also, this motorcycle has a rear wheel 12 at the rear end.
Is equipped with a so-called unit swing type engine 14 which rotatably holds the axle of the vehicle and whose front end is rotatably supported by the vehicle body frame. (Not shown) is connected.

As shown in FIG. 2, the headlamp lighting control apparatus according to the present embodiment has a parallel circuit formed by a starter switch 20 for operating the starter motor 18 and a PTC heater 16, a battery 22, and a main circuit. A switch 24 is connected in series, and a starter motor operating relay 26 is inserted between the starter switch 20 and ground, and a PTC heater 16 and ground are connected by a PT.
The C heater control means 28 is inserted to start the starter switch 20.
And the starter motor operating relay 26 are branched to P
The head lamp 10 is connected to the TC heater control means 28, and the head lamp 10 is connected to the main switch 24 and the PTC heater control means 28.
And PTC heater 16 are connected in parallel between. Hereinafter, the configuration of each unit will be described in detail.

The negative terminal of the battery 22 is grounded. The positive terminal of the battery 22 is connected to one end of the manual main switch 24 and the starter motor operating relay 26.
Is connected to one end of the switch contact 26a, and is further connected to the starter motor 18 via the switch contact 26a.

One end of the main switch 24 is the battery 2
2 is connected to the positive terminal and the other end is connected to the PTC via the brake switch 30 and the starter switch 20.
It is connected to the heater control means 28. Starter switch 2
0 and the PTC heater control means 28 are branched and grounded via a switch contact 26a driving coil 26b. In addition, the PTC heater 16 and the headlamp 10
Are connected in parallel between the main switch 24 and the PTC heater control means 28.

The PTC heater control means 28 maintains the PTC heater 16 and the headlamp 1 while the main switch 24 is turned on and the starter motor 18 is rotated by the starter switch 20 and the brake switch 30.
When 0 is held OFF and the starter switch 20 is turned OFF after engine operation, engine operation is detected and the PTC heater 16 and headlamp 10 are turned ON.

That is, the PTC heater control means 28 has a detection circuit 28a connected between the starter switch 20 and the coil 26b and connected to the ignition coil 32a of the generator 32 of the engine 14, and the detection circuit 28a and the base. And a transistor 28b having electrodes connected thereto. The detection circuit 28a is turned off when the starter switch 20 is on, while the engine 14 is started to operate the generator 32 and the starter switch 20 is off.
When it becomes F, it is activated by a signal from the ignition coil 32a to cause a current to flow through the base electrode of the transistor 28b. The collector electrode of the transistor 28b is P in parallel.
It is connected to each of the TC heater 16 and the headlamp 10, and the emitter electrode is grounded. The engine 1
The means for detecting the operation of No. 4 may be a means other than the ignition coil 32a, such as a pickup coil 32b provided in the generator 32.

The operation of the lighting control device of the present embodiment configured as described above will be described. (1) When the driver or the like turns on the main switch 24 and turns on the brake switch 30 and the starter switch 20, the coil 26b is energized, the switch contact 26a is turned on, and the starter motor 18 rotates. (2) When the engine 14 is started by the operation of the starter motor 18, the generator 32 directly connected to the crankshaft end of the engine 14 operates. When the starter motor 18 is in the operating state, the starter switch 20 is in the ON state, so the detection circuit 28a of the PTC heater control means 28 does not operate and no current flows in the headlamp 10 and the PTC heater 16. (3) When the driver or the like confirms that the engine 14 has started and turns off the starter switch 20, the detection circuit 28a
The starter switch 20 is turned off and a signal from the ignition coil 32a is detected to activate the transistor 2
8b is turned on between the collector electrode and the emitter electrode. As a result, current flows through the headlamp 10 and the PTC heater 16, respectively, so that the headlamp 10 is turned on and the PTC heater 16 begins to warm the ceramic plate in the carburetor.

According to this embodiment which operates in this way,
Since the headlamp 10 and the PTC heater 16 are always off when the starter motor 18 is operating, a large current can be supplied to the starter motor 18 and the engine 14 can be started well. Even if the main switch 24 is ON, the engine 14
If not working, headlamp 10 and PTC
Since the heater 16 is in the OFF state, even if the main switch 24 is turned on and is forgotten to be turned off, the consumption of the battery 22 can be reduced and the battery exhaustion can be prevented.

In this embodiment, the PTC heater 16 also maintains the same control as the conventional one. That is, since the PTC heater 16 is controlled so as not to be energized when the starter motor 18 is in the operating state, there is no need to warm the ceramic plate to operate the starter plunger when the engine 14 is not in the operating state. ,
The engine 14 is energized only after the engine has been reliably started. Therefore, even if the engine 14 is difficult to start and the starter motor 18 is operated many times, there is no problem such as a thin mixture being supplied to the engine 14.

The present embodiment is a preferred embodiment of the present invention, and the technical scope of the present invention is not limited to this embodiment.

[0021]

As described above, according to the present invention, PT
With a simple and inexpensive configuration using an existing device for controlling the C heater, the engine can be started well, and even if the main switch is turned off and the switch is forgotten, the battery can be prevented from running out.

[Brief description of drawings]

FIG. 1 is a side view of a motorcycle according to an embodiment.

FIG. 2 is a diagram showing a circuit of a lighting control device of the present embodiment.

[Explanation of symbols]

 10 Head Lamp 14 Engine 16 PTC Heater 18 Starter Motor 20 Starter Switch 22 Battery 24 Main Switch 28 PTC Heater Control Means 32 Generator 32a Ignition Coil

Claims (1)

[Claims] 1. A parallel circuit formed by a starter switch for activating a starter motor and a PTC heater, a battery, and a main switch are connected in series, and
A device provided with a PTC heater control means for controlling the PTC heater is provided with a means for adjusting lighting of a head lamp in accordance with an operation timing of the PTC heater, and the PTC heater control means turns on the main switch. After that, the PTC heater and the head lamp are turned off while the starter motor is rotated by turning on the starter switch, and when the starter switch is turned off after the engine is operated, the operation of the engine is detected and the A lighting control device for a vehicle headlamp, wherein a PTC heater and the headlamp are turned on.