KR20050013385A - Apparatus of head lamp with bridge circuit for vehicle - Google Patents

Abstract

PURPOSE: A headlamp device using a bridge circuit of a vehicle is provided to easily mount and operate by using two bridge circuits and a high-speed diode together without changing a circuit and to prevent the electrode direction of a solenoid coil from being changed according to a control method. CONSTITUTION: A headlamp device using one lamp for low and high beams in common is coupled from a high terminal(12) and a common terminal(11) of a connector(10) for a headlamp through a high beam driving solenoid coil(18) to a lamp(14). Power of a battery(16) operated by a motion of a relay(17) actuated according to a signal applied to a low terminal and the common terminal of the connector for the headlamp is supplied to the lamp through a ballast(15). A bridge circuit(20) comprising diodes(D1,D2,D3,D4) is interposed between the high terminal and the common terminal of the connector and extended to the high beam driving solenoid coil. A bridge circuit(21) comprising diodes(D5,D6,D7,D8) is interposed between the low terminal and the common terminal of the connector and extended to the relay.

Description

Headlamp device for vehicle using bridge circuit {APPARATUS OF HEAD LAMP WITH BRIDGE CIRCUIT FOR VEHICLE}

The present invention relates to a vehicle head lamp device, and more particularly, in a head lamp device in which one lamp is commonly used for low beam and high beam, a bridge circuit that can be installed regardless of a (+) (-) control vehicle is provided. It relates to a vehicle head lamp device used.

Conventionally, the control method of a switch for turning on a lighting device of a vehicle is mainly a common (-) pole of a battery, and controls the (+) side by switching on, or conversely, There is a way to use the positive pole in common and the negative pole for control. At this time, the (-) terminal among the (+) and (-) terminals of the battery is always grounded to the vehicle body.

In the HEAD LAMP for HID and LOW / HIGH BEAM combined conversion kits, the kit circuit has to be changed according to the (+) and (-) control. Because of this, there is a problem that is difficult to install unless the expert at the time of mounting.

1 is a circuit diagram of a conventional vehicle headlamp device, FIG. 2 is a detailed circuit diagram showing a diode connection state of a conventional (+) control vehicle, and FIG. 3 is a detailed circuit diagram showing a diode connection state of a conventional (-) control vehicle.

As shown in FIG. 1, when the vehicle is connected to the vehicle in a normal state and the head lamp switch is left in the low beam position, the common terminal 11 of the connector 10 for the head lamp connected from the vehicle wire harness is turned on. Current flows from the low terminal 13 to the relay 17 to conduct the relay contact "E", and the input of the ballast (BALLAST) 15 by the battery 16 power supply connected to the relay 17 contact "E". The current flows in the line, and the lamp 14 lights up.

On the other hand, when the vehicle head lamp switch is turned on to the high beam position, the connection with the relay 17 is disconnected, and thus the lamp 14 is turned off while a current flows in the high beam solenoid coil (not shown) to direct the lamp 14 in the high beam direction. Move to.

In order to solve the problem that the lamp 14 is turned off when the high beam is turned on, as shown in FIG. 2, the diode D1 is connected between the contacts “A” and “B” in a direction in which current flows from B to A. FIG.

When the high beam is turned on, the contacts "B" and "A" are in the forward direction and current flows, and the relay 17 is attracted and the ballast 15 is operated to turn on the light, and at the same time, a current is generated between the contacts "B" and "C". The high beam solenoid is activated to produce a high beam pattern. At this time, the high beam indicator on the instrument panel lights up.

When the low beam is turned on, the contact between "A" and "B" is reversed so that no current flows from the low terminal 13 to the high terminal 12, so that the high beam solenoid does not operate and the high beam indicator of the instrument panel Does not light up.

In the case of a (-) control car, as shown in FIG. 3, the diode D1 is connected in the opposite direction to that of the (+) control car. Therefore, the positive control vehicle or the negative control vehicle must change the direction of the diode D1 connected between the contacts "A" and "B" according to the control.

Therefore, in the conventional vehicle headlamp device, since one lamp is used in common for the low beam and the high beam, there is a contradiction in which the high beam pilot is turned on in the instrument panel even when the low beam is turned on. In order to solve this problem, a diode was inserted to block the high beam electric signal so that the high beam pilot was not turned on at the instrument panel when the low beam was turned on. However, depending on whether the diode is a positive or negative control vehicle, Failure to artificially change the direction will cause malfunctions and the device will not operate correctly. Therefore, in the head lamp apparatus in which one lamp is used in common for the low beam and the high beam as described above, the diode between the (+) terminal and the (-) terminal is changed every time according to the (+) and (-) control method. There is a problem that it is difficult to install because of the hassle to change the wiring circuit.

In addition, since a single lamp is used for both low beam and high beam, the lamp is mechanically moved backward to light during high beam lighting to satisfy its function. At this time, motor or solenoid coil and magnet are used to move the lamp. In case of using solenoid and magnet, the + and-directions of the electrodes entering the solenoid coil should always be fixed. This is because the direction of the magnetic field is determined by the direction of the current entering the coil. Therefore, in the related art, the electrode direction of the solenoid coil for the movement of the lamp also needs to be changed every time according to the (+) and (-) control methods.

Accordingly, the present invention is to solve the above-mentioned conventional problems, in the head lamp device in which one lamp is used in common for the low beam and high beam, by using two high speed diodes and a bridge circuit composed of diodes It is an object of the present invention to provide a headlamp device for a vehicle using a bridge circuit that can be easily installed and operated without changing a separate circuit regardless of a (+) (-) control vehicle.

1 is a circuit diagram of a conventional vehicle headlamp device.

2 is a detailed circuit diagram illustrating a diode connection state of a conventional (+) control vehicle.

3 is a detailed circuit diagram illustrating a diode connection state of a conventional (-) control vehicle.

4 is a circuit diagram of a vehicle headlamp device using a bridge circuit according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: connector 11: common terminal (COM)

12: High terminal (HI) 13: Low terminal (LO)

14 lamp 15 ballast

16: battery 17: relay

18: solenoid coil 20, 21: bridge circuit

D1 ~ D10: Diode

The vehicle head lamp device using the bridge circuit according to the present invention for achieving the above object is connected to the lamp via a high-beam driving solenoid coil from the high terminal and the common terminal of the head lamp connector, In the headlamp device of an automobile commonly used for low beam and high beam as a lamp by supplying the battery power to the lamp through the ballast by the operation of a relay operated according to the signal applied to the low terminal and the common terminal And extending to the high beam driving solenoid coil through a bridge circuit composed of D1 to D4 diodes between the high terminal and the common terminal of the head lamp connector, and between the low terminal and the common terminal of the head lamp connector. When extending to the relay through a bridge circuit composed of ~ D8 diode High speed diode D9 is connected in a forward direction from the output lines of the D2 and D4 diodes of the bridge circuit to the output lines of the D6 and D8 diodes of the bridge circuit connected to one side of the relay, and the D1 and D3 diodes of the bridge circuit. The high-speed diode D10 is connected in a reverse direction to an output line of the diodes D5 and D7 of the bridge circuit connected to one side of the relay from an output line of the circuit.

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

4 is a circuit diagram of a vehicle headlamp device using a bridge circuit according to the present invention.

As shown, the present invention is connected to the lamp 14 from the high terminal 12 and the common terminal 11 of the head lamp connector 10 via the high beam driving solenoid coil 18, for the head lamp The power of the battery 16 is supplied to the lamp 14 via the ballast 15 by the operation of the relay 17 operated according to the signal applied to the low terminal 13 and the common terminal 11 of the connector 10. In the headlamp device of an automobile commonly used for low and high beams by supplying one lamp 14, two bridge circuits 20 and 21 and a high speed diode composed of a plurality of diodes D1 to D8 are provided. (D9) (D10) is provided.

Between the high terminal 12 of the headlamp connector 10 and the common terminal 11 and extending to the high beam driving solenoid coil 18 through a bridge circuit 20 composed of D1 to D4 diodes; The relay 17 extends between the low terminal 13 and the common terminal 11 of the headlamp connector 10 via a bridge circuit 21 composed of D5-D8 diodes.

In addition, the high-speed diode D9 is connected in a forward direction from the output lines of the D2 and D4 diodes of the bridge circuit 20 to the output lines of the D6 and D8 diodes of the bridge circuit 21 connected to one side of the relay 17. The high-speed diode D10 is connected in a reverse direction from the output lines of the D1 and D3 diodes of the bridge circuit 20 to the output lines of the D5 and D7 diodes of the bridge circuit 21 connected to one side of the relay 17.

Referring to the operation of the present invention configured in this way in more detail as follows.

The present invention converts an electric signal applied to the headlamp on the vehicle side through the bridge circuits 20 and 21, so that the ballast 15 is connected to the vehicle regardless of whether the vehicle's electrical system is a (+) control or a (-) control. To supply a constant amount of electricity.

That is, in general, rectifier diodes are used to convert AC electricity into DC electricity in an electric circuit. Among the rectifier diodes, there is a bridge circuit in which four diodes are connected by a bridge for onion rectification. When an alternating current is connected to the input electrode of this diode, the positive side always induces positive or negative direct current at the constant electrode. By using this property to connect the headlamp electricity of the vehicle to the AC input terminal of the bridge, it is possible to use a current with a constant polarity regardless of the circuit of the (+) control (-) control of the vehicle. Is there.

In more detail, first, the operation of the circuit in the case of mounting in a (+) control vehicle will be described. In the case of (+) control, the low and high signal lines are positive and the common terminal, common, is negative.

Here, in the case of the low beam, (+) is introduced into the low terminal 13 and (-) is introduced into the common terminal 11. Therefore, as shown in FIG. 4, when (+) is connected between the diodes D7 and D8, current flows in the direction of the diode D8, and the common terminal 11 is connected between the diodes D5 and D6 to become a (-) pole. The current flows toward the common terminal 11 through D5. This current activates a relay 17 which imparts a current to the ballast 15 input.

In the case of the high beam, the positive terminal of the high terminal 12 is connected between the diodes D1 and D2 by the same principle as the low beam, and the current flows into the D2 to become the (+) pole, and the common terminal 11 is connected to the diode D3. This current, connected between D4 and -pole through D3, also actuates the relay 17 which energizes the ballast 15 input. At the same time, current flows through the solenoid coil 18 connected to the (+) and (-) electrodes of the bridge circuit 20 to move the capsule in the high beam direction (see the lamp arrow in FIG. 4) to form a high beam pattern in the lamp 14. do. The following describes the operation of the circuit when mounted on a negative control vehicle.

In the case of (-) control, the signal lines of the low terminal 13 and the high terminal 12 are negative and the common terminal 11 is positive.

Here, the case of the low beam will be described first. (-) Is introduced into the row terminal 13 and (+) is introduced into the common terminal 11. Therefore, as shown in FIG. 4, when (-) is connected between the diodes D7 and D8, current flows in the direction of the diode D7 to become a (-) pole, and the common terminal 11 is connected between the diodes D5 and D6. Pass D6 to become a positive pole. Thus, even if the input polarity is reversed, it can be seen that the output polarity is always constant. The current acts on a relay 17 which imparts a current to the ballast 15 input.

On the other hand, in the case of a high beam, when (-) is applied to the high terminal 12, the (-) pole is connected between the diode D1 and D2 in the same principle as above, and current flows to the diode D1 to become the (-) pole. The common terminal 11 is connected between the diodes D3 and D4 and becomes a (+) pole through the diode D4, which in turn activates a relay 17 which supplies a current to the ballast 15 input.

At the same time, current flows through the solenoid coil 18 connected to the positive and negative electrodes of the bridge circuit 20, and the capsule is moved in the high beam direction to form a high beam pattern on the lamp 14.

When the circuit of the present invention is used, the switching speed is much faster, and thus the blinking of the lamp cannot be visually confirmed. In addition, since the switching speed is extremely fast even during passing, a quick change is performed immediately before the actual gas discharge lamp is turned off and cooled. Therefore, it is impossible to read the light off state with eyes. Therefore, the lamp life will not be adversely affected.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments without departing from the spirit of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such modifications are intended to fall within the scope of the appended claims.

As described above, according to the vehicle headlamp device using the bridge circuit according to the present invention, in the conventional vehicle headlamp device, the direction of the diode is artificially changed depending on whether it is a (+) control vehicle or a (-) control vehicle. If not, there is a problem that the device does not operate correctly due to a malfunction, but the present invention uses two bridge circuit consisting of a diode and a high-speed diode together, without having to change a separate circuit regardless of the (+) (-) control vehicle It is easy to install and operate. In addition, by supplying a constant direction current to the solenoid coil used to move the lamp during the high beam operation through the bridge circuit, there is no need to change the electrode direction of the solenoid coil according to the (+), (-) control method during installation. As the switching speed is much faster, the blinking of the lamp cannot be seen with eyes. Also, because the switching speed is extremely fast even during passing, fast switching is performed immediately before the actual gas discharge lamp is turned off and cooled. The eye cannot read the off state, but in fact, there is an effect of switching from the lit state to the high beam, so there are various effects that do not adversely affect the lamp life.

Claims (3)

It is connected to the lamp 14 from the high terminal 12 and the common terminal 11 of the head lamp connector 10 via the high beam driving solenoid coil 18, and the low terminal of the head lamp connector 10 ( 13 and one lamp 14 by supplying the power of the battery 16 to the lamp 14 via the ballast 15 by the operation of the relay 17 is operated according to the signal applied to the common terminal 11. In the head lamp device of a vehicle commonly used for low beam and high beam, Between the high terminal 12 and the common terminal 11 of the headlamp connector 10 to extend to the high beam driving solenoid coil 18 through a bridge circuit 20 composed of D1 to D4 diodes; Characterized in that the relay (17) is extended between the low terminal (13) of the headlamp connector (10) and the common terminal (11) via a bridge circuit (21) composed of D5-D8 diodes. Vehicle headlamp device using a bridge circuit. The method of claim 1, The high-speed diode D9 is connected in a forward direction from the output lines of the D2 and D4 diodes of the bridge circuit 20 to the output lines of the D6 and D8 diodes of the bridge circuit 21 connected to one side of the relay 17. Vehicle head lamp device using a bridge circuit. The method of claim 1, The high-speed diode D10 is connected in a reverse direction from the output lines of the D1 and D3 diodes of the bridge circuit 20 to the output lines of the D5 and D7 diodes of the bridge circuit 21 connected to one side of the relay 17. A vehicle head lamp device using a bridge circuit.