KR970004732B1 - Head lamp control circuit of a car - Google Patents

Abstract

When the combination switches(S/W3)(SW/3)(S/W4) are turned on to the 1st step(TNS) terminal, the relay(RY1) for the headlight control is turned off and in the tail selecting relay(RY2), a relay coil pointing loop is formed and the relay contact switch is turned on. As a result, the taillight(TNS-L) related lamp(ILL-L) is turned on and the power is supplied to the off terminal of the 2nd relay(RY12). At this time, only when the pass switch is on or the headlight selection relay(RY1) is on and the dimmer switch(S/W5) selects a high beam, the 1st and the 2nd relay(RY11)(RY12) are turned on. So, when the 1st step of the combination switches(S/W3)(S/W4) are selected, the high beam lamps of the two headlights are on.

Description

Headlight control circuit of car

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

2 is a headlight control circuit diagram of an automobile according to the present invention.

* Explanation of symbols for main parts of the drawings

S / W1: Passing Switch S / W2: Fog Light Switch

S / W3, S / W4: Combination Switch S / W5: Dimmer Switch

R1, RY2, RY11, RY12: Relay HU-L: Headlight High Beam Lamp

HL-L: Headlight low beam lamp F1, F2, FOG-F, TAIL-F, ILL-F: Fuse

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headlight control circuit of a motor vehicle, and more particularly, to a headlight control circuit of a motor vehicle capable of securing a forward field of view at a stop or low-speed driving at night when driving at night. In general, the headlights of a car can select a high beam and a low beam through a DIMMER switch, and the left and right sides are connected in parallel. FIG. 1 is a circuit diagram of a conventional lighting device for a vehicle. As shown therein, the headlight high beam lamp HU-L and the low beam lamp HL-L pass through the headlight control relay RY1 and the dimmer switch S /. The headlight high beam and low beam are selected by W5) to control lighting. In addition, the headlight high beam lamp (HU-L) is controlled by a padding switch (overtaking switch) S / W1, and a tail lamp (Tail-L; tail light) is provided through a tail control relay (RY2). And the guide light (Fog-L) is to be controlled again through the fog light switch (S / W2), the headlight control relay (RY1) is turned off (OFF), the first stage by the combination selection switch (S / W3) When the TNS and the HEAD terminals are selected, the relay is operated, and the tail selection relay RY2 is commonly connected by the selection switch S / W4 interlocked with the selection switch S / W3. When the TNS and HEAD terminals are selected, the relay operates to control the lighting.

In addition, the left and right two high beam lamps HU-L, such as the headlamp, are connected in parallel, and the two left and right sides of the low beam lamp HL-L are connected in parallel. However, when the headlights are turned on when stopping at the road due to a signal or a traffic jam at night, the lights are turned off because they impede the front or front vehicle, and only the left and right position lamps are lit. The identification of the front and the clock is not good. However, due to the traffic jam, the headlights cannot be turned on for other vehicles at the time of slow moving, so that the identification of the vehicle is difficult and the front clock is difficult to secure, resulting in contact accidents and difficulty in driving. There was this.

The present invention by reducing the brightness of the headlamp in light of the conventional problems as described above by lighting for securing the clock when the vehicle is congested, to provide a headlight control circuit of the vehicle easy to secure the front clock and identify the vehicle even when the vehicle is stopped. will be. SUMMARY OF THE INVENTION An object of the present invention is to provide a lighting device for a vehicle, in which a first beam and a second relay are controlled by a high beam lamp selection of a dimmer switch and a passing switch, and an on-contact switch of the first relay and a second relay is provided. The two headlight high beam lamps are connected in parallel to be lit with normal brightness, and the two high beam lamps are connected in series through the off-contact switch of the second relay, and the two high beam lamps are connected in series to provide low brightness. According to the present invention, when the combination switch is turned on in the first stage, the tail select relay is turned on so that the two high beam lamps are connected in series and lighted with low brightness. It is possible to secure the front clock and identify the position by lighting the headlamp with low brightness with the signal waiting lamp.

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

FIG. 2 is a headlight control circuit diagram of a vehicle according to the present invention, and the headlight selection relay RY1 and the tail selection relay RY2 are coupled to each other by a combination switch S / W3 and S / W4 as shown in FIG. Is controlled so that the contact switch output of the headlight selector relay RY1 can select the point of the headlight high beam lamp HU-L and the low beam lamp HL-L by the dimmer switch S / W5. The lighting of the fog lamp (FOG-L) is controlled again through the tail lamp (TNS-L), the instrument lamp (ILL-L), and the fog lamp switch (S / W2) through the contact switch of the tail selection relay (RY2). In the lighting device of a vehicle, the first and second relays RY11 and RY12 controlled by the high beam selection of the dimmer switch S / W5 and the passing switch S / W1 are provided. Through contact switch of 1 relay (RY11), it is common to one end of two headlight high beam lamps (HU-L). The other end of one of the two high beam lamps is grounded, and the other end of the other high beam lamp is connected to the common contact of the second relay RY12, and the second relay RY12 of The off point is grounded, and the on contact of the second relay RY12 is connected to the switch output terminal of the tail select relay RY2, and the two high beam lamps HU are connected through the on contact of the second relay RY12. -L) is configured to be connected in series.

Here, in the drawings, reference numerals F1, F2, FOG-F, TAiL-F, and ILL-F are fuses, and two headlight low beam lamps HL-L are connected in parallel but only one is shown in the drawing. It was. According to the present invention configured as described above, when the combination switch (S / W3) (S / W4) is turned on at the first stage (TNS) terminal, the headlight control relay (RY1) is in the off state, and the tail selection relay (RY2). The relay coil has a pointed loop formed so that the relay contact switch is turned on.

Accordingly, the tail lamp TNS-L and the meter lamp ILL-L are turned on, and power is supplied to the off contact of the second relay RY12 provided by the present invention. At this time, the first and second relays RY11 and RY12 are applied only when the pass switch S / W1 is turned on or the headlight selection relay RY1 is turned on and the dimmer switch S / W5 selects a high beam. Since it is turned on, when the first stage of the combination switch S / W3 (S / W4) is selected, the first and second relays RY11 and RY12 are turned off, and the contact switch of the tail selection relay RY2 is turned off. And two headlamp high beam lamps HU-L are connected in series through the off contact of the second relay RY12 and turned on.

Therefore, the two high beam lamps are connected in series and lighted, so the brightness is reduced to 1/4 of the brightness as compared to the case in which the light is connected in parallel. The driver can secure a forward watch in traffic jams or signal waits without disturbing the opposite vehicle, and can accurately identify the vehicle identification and position in other vehicles.

On the other hand, in the circuit according to the present invention, when the combination switch S / W3 (S / W4) is turned on at the second stage HEAD terminal, the headlight selection relay RY1 and the tail selection relay RY2 are simultaneously turned on. The high beam lamp HU-L and the low beam lamp HL-L, such as a headlamp, are selected and switched on by switching the dimmer switch S / W5. The high beam is switched by the dimmer switch S / W5. When the lamp HU-L is selected, since the first relay RY11 is turned on to supply power to the two high beam lamps, and the second relay RY12 is turned on and connected to the ground side, the two high beam lamps HU -L) is turned on in parallel. Accordingly, the high beam lamps are each turned on at normal brightness to serve as headlights.

As described in detail above, according to the present invention, when the combination switch is selected as the first stage, the headlight high beam lamp is turned on at 1/4 brightness, so that the driver can secure the front clock when the vehicle is stopped at night or when waiting for traffic. The effect is to provide location identification to the car.

Claims (1)

In the lighting device of a vehicle, a high beam lamp selection of a dimmer switch and a first relay controlled by a pass switch and a second relay for switching contacts are provided, and two headlamps are provided through the on-contact switch of the first relay. The high beam lamps are connected in parallel to be lit with normal brightness, and the two high beam lamps are connected in series by receiving power from the switch of the tail selection relay when the combination switch is selected in one stage through the on-contact switch of the second relay. A headlight control circuit for a vehicle, characterized in that configured to be turned on at an intensity.