JPH0523974B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cornering lamp system for a vehicle that changes the irradiation direction of a lighting means in conjunction with steering wheel steering.

[Conventional technology]

Vehicles, especially automobiles, are equipped with headlights to illuminate the road ahead at night, but these headlights illuminate only the front of the vehicle, and when approaching a curve. In such a case, the direction in which the vehicle is traveling cannot be sufficiently illuminated. In other words, when cornering or the like, the vehicle is not sufficiently illuminated in the direction in which the vehicle is actually traveling, which may pose a danger.

To solve this problem, cornering lamp systems have been proposed in which the direction of the headlights is varied in conjunction with the steering wheel of the vehicle, and the direction of travel is illuminated. . For example, a mechanical cornering lamp system configured to move the headlights from the steering rod via a link, or an electric system configured to detect the rotation angle of the headlights with a rotary encoder and controlled by a servo motor. Cornering lamp systems have been proposed. Mechanical cornering lamp systems are not very versatile because they must be specially designed for each vehicle type, and from this point of view, electric cornering lamp systems are more advantageous because of their versatility.

[Problem that the invention seeks to solve]

However, in conventional cornering lamp systems, the irradiation direction of the headlights is continuously changed in conjunction with the steering wheel of the vehicle, so the configuration is particularly complex, especially in electric cornering lamp systems. However, there was a problem of low reliability considering the high cost.

[Means for solving problems]

The present invention has been made in view of these problems, and includes a steering amount detection means that transmits an up signal and a down signal according to the amount of steering in conjunction with steering of the steering wheel to one side and the other side, and a counter means that increases and decreases the count value based on the up signal and down signal from the quantity detection means; A decoder means for selecting a predetermined processing output terminal and setting it to the "0" level, a board rotating in conjunction with a motor that changes the direction of irradiation of the lighting means, and a board arranged circumferentially at a given interval on the board. arc-shaped first and second conductor patterns formed by providing the first and second conductor patterns, and first to N+2 sliding contacts that are arranged in order facing each other on the movement locus of the first and second conductor patterns. A first sliding contact is provided as a contact that is always in sliding contact with the first conductive pattern when the substrate is rotated, and an N+2 sliding contact is provided as a contact that is always in sliding contact with the second conductive pattern. 2nd to (N+1)th sliding contacts are provided such that one of them is always positioned at the predetermined interval and is in sliding contact with the first and second conductor patterns, and the first sliding contact The moving contact is connected to the "1" level power supply through the coil of the first relay, the N+2 sliding contact is connected to the "1" level power supply through the second relay coil, and the 2nd to N+1th sliding contacts are connected to the "1" level power supply through the second relay coil. and a sliding contact mechanism in which sliding contacts are connected to the first to Nth processing output terminals respectively, and when current flows through the coil of the first relay and the relay contacts are closed, "0" The motor is rotated in the direction of positioning the sliding contacts connected to the processing output terminals that are set at a predetermined interval at a predetermined interval, and current flows through the coil of the second relay to close the relay contacts. The motor is configured to rotate in a direction to position sliding contacts connected to the processing output terminal set to the "0" level at predetermined intervals.

[Effect]

Therefore, according to the present invention, an up/down signal is sent out in conjunction with steering wheel steering, the count value of the counter means changes based on this up/down signal, and the count value of the decoder means changes according to this count value. The processing output terminal that is set to the "0" level changes.

Here, for example, the processing output terminal connected to the sliding contact in contact with the first conductor pattern is "0".
When the level is set, the first sliding contact is set to the "0" level using the first conductor pattern as a conduction path, and current flows through the coil of the first relay to close the relay contact. This causes the motor to rotate and
The board rotates in conjunction with this, and when the sliding contact connected to the processing output terminal that is at the "0" level leaves the first conductor pattern, the first sliding contact becomes "1". ' level, the relay contact of the first relay is opened, and the power supply to the motor is cut off. As a result, the irradiation direction of the lighting means changes to a stepwise position according to the steering operation of the steering wheel.

Further, for example, when the processing output terminal connected to the sliding contact in contact with the second conductive pattern is set to the "0" level, the N+2 sliding contact is set to the "0" level using the second conductive pattern as a conductive path. 0” level,
Current flows in the coil of the second relay, closing its relay contacts. This causes the motor to rotate and
The board rotates in conjunction with this, and when the sliding contact connected to the processing output terminal, which is at the "0" level, leaves the second conductor pattern, the N+th
The sliding contact of the second relay is returned to the "1" level, the relay contact of the second relay is opened, and the power supply to the motor is cut off. As a result, the irradiation direction of the lighting means changes to a stepwise position in accordance with the steering operation of the steering wheel.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The vehicle cornering lamp system according to the present invention will be explained in detail below. FIG. 1 is a circuit diagram showing one embodiment of this cornering lamp system. In the figure, 1 is a photo sensor attached to a disc with a slit (not shown) that is linked to the handle, 2 is a processing circuit that processes the electrical signals sent out by the photo sensor 1, and 3 is the processing circuit that processes the electrical signals sent out by the processing circuit 2. A lamp drive unit 4, which drives a headlamp (not shown) based on a processed signal, is a DC power supply.
The photo sensor 1 consists of a light emitting diode 11, a photo transistor 12, and resistors R ₁ and R ₂ .
a photo interrupter 13, a light emitting diode 14, a photo transistor 15 and a resistor R ₃ ,
A second photo interrupter 16 consisting of _R4 , a photo interrupter 13
output terminal 17 and photo interrupter 16
At the output terminal 18 of the controller, a pulsed electrical signal having the same waveform and alternating "1" level and "0" level as shown in FIG. 2 a and b is generated in conjunction with the steering wheel of the automobile. It's summery. In other words, by rotating the handle clockwise (clockwise) from the neutral point, a positive electric signal centered at 0° will be turned counterclockwise (clockwise), causing the electric signal to change to 0°. A negative electrical signal centered at ° is generated, and a is the output terminal 17.
b indicates an electrical signal generated at the output terminal 18, and b indicates an electrical signal generated at the output terminal 18. The electrical signal generated at the output terminal 17 is 90 degrees ahead of the electrical signal generated at the output terminal 18, and when the handle is at the neutral point, that is, at 0 degrees in FIG. The generated electrical signal changes from the "1" level to the "0" level, or from the "0" level to the "1" level.
The electric signal generated at the output terminal 17 is in the "0" level state at the falling or rising time when the output terminal changes to the "0" level.

On the other hand, the processing circuit 2 includes NAND gates 21, 2
2. Inverter 23, R/S flip-flop circuits 24, 25, AND gates 26, 27, UP/
It is composed of a DOWN counter 28 and a decoder/driver 29, and the R.S flip-flop circuits 24 and 25 are composed of OR gates 241, 242 and 251, 252 with negative logic inputs. Then, the electrical signal generated at the output terminal 17 of the photo sensor 1 is transmitted to the NAND gate 21.
and 22, and the reset terminals 24r and 2 of the R/S flip-flop circuits 24 and 25.
5r, and the electrical signal generated at the output terminal 18 of the photo sensor 1 is input to one end of the NAND gate 26, the other end of the NAND gate 22, and the inverter 23. There is. The electrical signal output from the inverter 23 is input to the other end of the NAND gate 21 and one end of the AND gate 27. Further, the outputs of the NAND gates 21 and 22 are connected to the R/S flip-flop circuits 24 and 25.
It is designed to be input to the set terminals 24s and 25s of the R.S. flip-flop circuit 2.
The outputs of 4 and 25 are Q output terminals 24q and 2
5q to the other ends of AND gates 26 and 27. The outputs of the AND gates 26 and 27 are input to the up input terminal 28μ and the down input terminal 28d of the UP/DOWN counter 28,
The UP/DOWN counter 28 increases or decreases the count value each time a signal of level "1" is input to the input terminal 28μ or 28d, and outputs a digital signal corresponding to the count value to the output terminal 2.
The signals are sent to input terminals 29A to 29D of the decoder/driver 29 via terminals 8A to 28D. The decoder/driver 29 receives this digital signal, selects a predetermined output terminal from among the output terminals 29a to 29o, and sets the level to "0". That is, the second
At point N in the figure, the count value of the UP/DOWN counter 28 is set to zero, and at this time the decoder/driver 29 selects the output terminal 29h and sets only the level of this output terminal 29h to "0". ” level. Then, each time the count value in the UP/DOWN counter 28 increases by 1, the output terminals 29h to 29g, 29f, . . . 29a go to the "0" level.
This is gradually increasing. Also,
Every time the count value in the UP/DOWN counter 28 decreases by 1 from zero, the output terminal that becomes "0" level is changed from 29h to 29i, 29j...29
It is designed to be carried down sequentially as o. It goes without saying that even in a countdown after a count-up or a count-up after a countdown, the output terminals at the "0" level are successively carried down or carried up to the adjacent output terminals. Then, the output terminals 29a and 29b of the decoder/driver 29 are connected to the processing output terminal 2a of the processing circuit 2, and the output terminals 29c and 29
d to the processing output terminal 2b, 29e and 29f to the processing output terminal 2c, 29g, 29h and 29
i is connected to the processing output terminal 2d, 29j and 29k are connected to the processing output terminal 2e, 29l and 29m are connected to the processing output terminal 2f, and 29n and 29o are connected to the processing output terminal 2g.

Therefore, the processing output terminals 2a to 2 of the processing circuit 2
g slides into semicircular band-shaped (arc-shaped) conductor patterns 32 and 33 formed on the sliding substrate 31 of the lamp drive unit 3 at a predetermined interval 31a (see FIG. 3) along the circumference. Sliding contact 34b~
34h, and the sliding contact 34a adjacent to the sliding contact 34b is connected to the coil 3 of the relay 35.
It is connected to the positive polarity side ("1" level power supply) of the DC power supply 4 via 51. In addition, the sliding contact 34
The sliding contact 34i adjacent to h is also connected to the positive polarity side (“1”) of the DC power supply 4 via the coil 361 of the relay 36.
Diodes 37 and 38 are connected to the coils 351 and 361 in parallel. The normally open/normally closed contacts 352 of the relay 35 and the normally open/normally closed contacts 362 of the relay 36 are connected to both connection ends of the DC motor 39, and when the relay 35 is energized, the normally open/normally closed contacts 352 of the relay 35 and the normally open/normally closed contacts 362 of the relay 36 are connected. The common terminal 352c of the normally closed contact 352 and the normally open contact terminal 352a are electrically connected, and the positive polarity side of the DC power supply 4 is connected to one end of the DC motor 39. Further, when the relay 36 is energized, the common terminal 362c of the normally open/normally closed contact 362 and the normally open contact terminal 362a are electrically connected, and the positive polarity side of the DC power supply 4 is connected to the other end of the DC motor 39. It is becoming connected. That is, the normally open and normally closed contacts 352 and 362 are normally connected to their common terminals 352c and 362c and the normally closed contact terminal 352.
b and 362b are in a conductive state, and at this time both ends of the DC motor 39 are grounded. and,
When DC power is supplied to the DC motor 39 through the normally open/normally closed contacts 352, the motor rotates the lamp drive shaft 5 clockwise (clockwise rotation in the figure); Conductor pattern 3
2 and 33 are also adapted to rotate clockwise integrally with the sliding substrate 31. In addition, the DC motor 39
When DC power is supplied through the normally open/normally closed contacts 362, the lamp drive shaft 5 rotates counterclockwise, and as the lamp drive shaft 5 rotates counterclockwise, the conductor patterns 32 and 33 move toward the sliding substrate. It is designed to rotate counterclockwise in unison with 31. In addition, the lamp drive shaft 5
It goes without saying that the irradiation direction of the headlight changes by clockwise and counterclockwise rotation of the lamp drive shaft 5, and by clockwise rotation of the lamp drive shaft 5,
The irradiation direction of the headlights is rotated to the right when viewed from the driver's seat, and the lamp drive shaft 5 is rotated to the left, so that the irradiation direction of the headlights is rotated to the left. Furthermore, as is clear from FIG. 1, the sliding contacts 34a to 34i are arranged in order to face each other on the movement locus of the conductor patterns 32 and 33, and are always in contact with the conductor pattern 32 when the sliding substrate 31 rotates. A sliding contact 34a is used as a sliding contact.
A sliding contact 34i is provided as a contact that is always in sliding contact with the conductive pattern 33, and one of the sliding contacts 34i is always positioned at a predetermined interval 31a and is in sliding contact with the conductive patterns 32 and 33. Moving contacts 34b to 34h are provided.

Next, the operation of the vehicle cornering lamp system configured as described above will be explained. That is,
Assume that the car is now traveling straight and the steering wheel is at the neutral point (N in Figure 2).
point). At this time, the count value in the UP/DOWN counter 28 is zero, and the decoder/driver 2
9, only the output terminal 29h is at the "0" level. In other words, the output terminals 29a to 29g and the output terminals 29i to 29o are all at the "1" level, and the sliding contacts 34b to 34d and 34f to 34h in contact with the conductor patterns 32 and 33 are at the "1" level. There is. Therefore, power is not supplied to relays 35 and 36, and DC motor 39 does not rotate. In other words, the irradiation direction of the headlights is stopped facing forward at this time.

When the steering wheel is rotated to the right in such a state to start steering to the right, the electric signals sent by the photo interrupters 13 and 16 become "1" and "0" levels (point a in FIG. 2). As a result, the output of the NAND gate 21 changes from the "1" level to the "0" level, the R.S flip-flop circuit 24 is set, and the Q output terminal 24q becomes the "1" level. Then, when the right steering is further performed and point b in FIG.
level, a “1” level signal (UP signal) is input to the UP input terminal 28u of the UP/DOWN counter 28, and the UP/DOWN counter 28
The count value at is incremented by 1. As a result, the decoder/driver 29 moves up the "0" level signal that it has been sending out until then and sends it out from the output terminal 29h to the output terminal 29g. However, since the output terminal 29g is connected to the output terminal 2d of the processing circuit 2 in the same way as the output terminal 29h, power is not supplied to the motor 39, and the headlight continues to stop while facing forward. . Then, by continuing to steer to the right, the output terminals 17 and 18 of the photo sensor 1 become "0" and "1" levels (c in Fig. 2).
(point), the reset terminal 24r of the R/S flip-flop circuit 24 goes to the "0" level, the flip-flop is reset, and the Q output terminal 24q goes to the "0" level to prepare for the next count. When the point d in FIG. 2 is reached, the output of the NAND gate 21 changes from the "1" level to the "0" level, the R/S flip-flop circuit 24 enters the set state, and the Q output terminal 24q becomes "1" again. level, and when it reaches point e in Fig. 2, the output of the AND gate 26 becomes the "1" level and the UP/
The count value in the DOWN counter 28 further increases by one. As the count value increases, the decoder/driver 29 transfers the "0" level signal that had been sent to the output terminal 2.
9g and sends it out to the output terminal 29f, and the processing output terminal 2c becomes the "0" level, so that the sliding contact 34 is connected to the coil 351 of the relay 35.
A, a current flows through the path of the conductor pattern 32, the sliding contact 34d, and the output terminal 2c. By energizing this coil 351, the normally open/normally closed contact 35
2 common terminal 352c and normally open contact terminal 352a
are brought into conduction, the DC motor 39 rotates, and the lamp drive shaft 5 rotates clockwise. This lamp drive shaft 5
By clockwise rotation of
2 and 33 while sliding the sliding contacts 34a to 34i to the right. Then, when the sliding contact 34d connected to the processing output terminal 2c, which is at the "0" level, separates from the conductor pattern 32, the sliding contact 34a is returned to the "1" level, and the relay 3
The energization of the coil 351 of No. 5 is released, the common terminal 352c of the normally open/normally closed contact 352 and the normally open contact terminal 352a become non-conductive, and the power supply to the DC motor 39 is cut off. The DC motor 39 rotates slightly due to inertia and then stops, and the sliding board 31
is the conductor pattern 32 and 3 as shown in FIG.
A sliding contact 34 is located approximately at the center of a predetermined distance 31a from 3.
Stop with d in position. As a result, the irradiation direction of the headlight changes to one step to the right in accordance with the steering wheel steering.

Similarly, by continuing to steer to the right,
The count value in the UP/DOWN counter 28 increases sequentially, and the processing output terminal which is selected by the decoder/driver 29 and set to the "0" level is set to 2.
b, 2a, and as a result, the DC motor 3
9 rotates intermittently, and the irradiation direction of the headlight moves clockwise in stages.

Next, the operation when the handle is rotated to the left from the neutral point will be explained. That is, when the left steering is performed from point N in FIG. 2, the output terminals 17 and 18 of the photo sensor 1 both go to the "1" level (point f in FIG. 2), and the output of the NAND gate 22 goes to the "0" level. Then, the R.S flip-flop circuit 25 is set, and the Q output terminal 25q goes to the "1" level. When point g in FIG. A “1” level signal (down signal) is input to the down input terminal 28d, and the UP/DOWN
The counter 28 counts down the count value by one. This countdown allows the decoder/
The driver 29 now lowers the "0" level signal that it had been sending out from the output terminal 29h to the output terminal 29i and sends it out. When the point h in FIG. 2 is reached, both the output terminals 17 and 18 go to the "0" level, the R/S flip-flop circuit 25 is reset, and the Q output terminal 25q goes to the "0" level and the next Prepare for the count. However, when it reaches point i in Figure 2, UP/
The count value in the DOWN counter 28 further counts down by 1, and the position of the "0" level signal sent out by the decoder/driver 29 moves down from the output terminals 29i to 29j. As a result, the processing output terminal 2e becomes the "0" level, and current flows through the coil 361 of the relay 36 through the path of the sliding contact 34i, the conductor pattern 33, the sliding contact 34f, and the output terminal 2e, and the normally open/normally closed contact The common terminal 362c of 362 and the normally open contact terminal 362a are brought into conduction, the DC motor 39 rotates, and the lamp drive shaft 5 rotates to the left. This counterclockwise rotation of the lamp drive shaft 5 moves the irradiation direction of the headlight counterclockwise, and at the same time, the sliding board 31 rotates counterclockwise, and the sliding board 31 connected to the processing output terminal 2e, which is set at the "0" level, moves counterclockwise. When the contact point 34f is separated from the conductor pattern 33,
The sliding contact 34i is returned to the "1" level, the energization of the coil 361 of the relay 36 is released, and the common terminal 362c of the normally open/normally closed contact 362 and the normally open contact terminal 362a become non-conductive. Then, the power supply to the DC motor 39 is cut off. As a result, the DC motor 39 rotates slightly due to inertia and then stops.
The irradiation direction of the headlight changes to one position to the left in response to steering wheel steering.

In the same way, by continuing to steer to the left,
The count value in the UP/DOWN counter 28 decreases sequentially, and the processing output terminal is selected by the decoder/driver 29 and set to the "0" level.
f, 2g, and as a result, the DC motor 3
9 rotates intermittently, and the irradiation direction of the headlight moves counterclockwise in stages.

Incidentally, in this embodiment, the stepwise swing angle of the headlight irradiation direction is set to 10 degrees, so that the headlight irradiation direction can be swung left and right by a maximum of 30 degrees each. In order to obtain such a deflection angle, the sliding contacts 34b to 34h are arranged at equal angular intervals, and the intervals are sufficient to swing the irradiation direction of the headlight by 10 degrees in one step. The field of view obtained when the direction of irradiation of the headlights was changed stepwise in this manner was sufficient for practical purposes. Generally, automobile headlights have a light distribution pattern of several tens of degrees;
If you move the headlights in steps of ~30%,
Practically sufficient visibility can be obtained without having to continuously move the headlight as in the conventional case.

In addition, in this embodiment, the operation was explained when the handle was rotated clockwise and counterclockwise from the neutral point. too,
It goes without saying that the count value in the UP/DOWN counter 28 is sequentially counted down or counted up, and the irradiation direction of the headlight changes according to this count value.

As described above, according to the cornering lamp system according to the present embodiment, since it is possible to illuminate the direction of travel in conjunction with the steering wheel of the automobile when cornering, safety during driving is ensured, and Since the irradiation direction is changed in stages using a DC motor, the configuration is simpler than a system using a conventional servo motor, resulting in a low-cost and highly reliable system. ing. Additionally, in a system using a servo motor, there was a problem in which the rotational position became uncontrollable if the rotational position detection terminal of the motor was disconnected. This provides a fail-safe operation in which the operation only stops in the event of a wire breakage.

In this embodiment, the processing circuit 2 is constituted by a hardware circuit, but it may be program-controlled using a microcomputer or the like. Also,
In this embodiment, the stepwise deflection angle of the headlamp's irradiation direction is set to 10 degrees and at equal intervals, but for example, the intervals between the sliding contacts 34b to 34h are close to 0 degrees, and become sparse as they move outward. It is also possible to configure the configuration so that

Further, the rotational movement of the headlight in the irradiation direction by the lamp drive shaft 5 may be performed by moving the entire headlight, but generally the space for installing the headlight in a car is narrow, and it is necessary to move the entire headlight. In many cases, it is not possible to secure the necessary space. Furthermore, even if the entire headlight is movable, there is a problem in cold regions where it will freeze and stop working, so recently a method has been proposed in which the reflector inside the headlight is movable. However, since a space is required inside the headlamp to move the reflector, the entire headlamp becomes large, making it impractical due to space constraints. In view of these points, the cornering lamp system of this embodiment uses a sub-reflector movable headlamp as shown in FIG. 4. That is, in the figure, 6 is a main reflector, 7 is a sub-reflector, and 8 is a light source. The sub-reflector 7 is adapted to rotate in conjunction with the lamp drive shaft 5 shown in FIG. When the car is traveling straight,
The directions of light reflected by the main reflector 6 and the sub-reflector 7 are the same. In such a state, when the car turns right, for example, the lamp drive shaft 5 intermittently rotates to the right in conjunction with steering wheel steering, as explained using FIG. Rotate and move as shown. Due to this rotational movement of the sub-reflector 7, the light reflected by the sub-reflector 7 is irradiated rightward in the figure. In other words, sub-reflector 7
The reflected light will illuminate the direction of travel. At this time, the reflected light from the main reflector 6 illuminates the front, and compared to a method in which the entire main reflector 6 is moved, visibility during night driving is expanded and safety is improved. Furthermore, by configuring the sub-reflector 7, which is smaller than the main reflector 6, to be movable, it is possible to take up a space for moving the headlamp without increasing the size of the headlamp, making it possible to fully realize this.

In addition, in this embodiment, the headlights are made to move in conjunction with steering wheel steering, but the direction of illumination of the headlights is fixed to the front as before, and serves as an auxiliary lighting device that moves in conjunction with steering wheel steering. Lights may also be used. By providing such an auxiliary light, the same effect as the sub-reflector 7 described above can be obtained.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, the irradiation direction changes in stages in conjunction with steering wheel steering, making it possible to simplify the configuration of an electric cornering lamp system. This makes it possible to achieve lower cost and higher reliability than a conventional cornering lamp system using a servo motor.

[Brief explanation of the drawing]

Fig. 1 is a circuit configuration diagram showing an embodiment of a vehicle cornering lamp system according to the present invention, Fig. 2 is an output waveform diagram of a photo sensor used in this cornering lamp system, and Fig. 3 is a sliding diagram in this cornering lamp system. FIG. 4 is a state diagram explaining the operation of the board, FIG. 4 is a schematic diagram of the internal structure of a headlamp driven using this cornering lamp system, and FIG. 5 is an explanatory diagram of the operation of this headlamp. 1...Photo sensor, 2...Processing circuit, 3...
Lamp drive unit, 4...DC power supply, 28...
UP/DOWN counter, 29...Decoder/driver, 31...Sliding board, 32, 33...Conductor pattern, 34a to 34i...Sliding contact, 39...
DC motor.

Claims (1)

[Claims] 1. In a vehicle cornering lamp system that changes the direction of illumination of a lighting device in conjunction with steering wheel steering, an up signal and a down signal are generated in conjunction with steering wheel steering to one side and the other side in accordance with the amount of steering. a steering amount detecting means for sending out a signal; a counter means for increasing and decreasing its count value based on the up signal and down signal from the steering amount detecting means;
- a decoder means for selecting a predetermined processing output terminal from among the N-th (N≧3) processing output terminals and setting it to the "0"level; and a board rotating in conjunction with a motor that changes the irradiation direction of the lighting means. and arc-shaped first holes formed at predetermined intervals along the circumferential direction on this substrate.
and a second conductor pattern, and first to N+2 sliding contacts arranged in order facing each other on the movement locus of the first and second conductor patterns,
When the substrate rotates, the first sliding contact is always provided in sliding contact with the first conductive pattern, and the N+2 sliding contact is provided as always in sliding contact with the second conductive pattern. The second to N+1 sliding contacts are provided such that one of them is always positioned at the predetermined interval and is in sliding contact with the first and second conductor patterns; one sliding contact is connected to a "1" level power supply through a coil of a first relay, and the N+2 sliding contact is connected to a "1" level power supply through a coil of a second relay; and a sliding contact mechanism in which the second to N+1 sliding contacts are respectively connected to the first to Nth processing output terminals, and current flows through the coil of the first relay to cause the relay contacts to flow through the coil of the first relay. is closed, the motor is rotated in a direction that positions the sliding contact connected to the processing output terminal, which is set at the "0" level, at the predetermined interval, and current is applied to the coil of the second relay. flows and the relay contact is closed, whereby the motor is rotated in a direction that positions the sliding contact connected to the processing output terminal, which is set at the "0" level, at the predetermined interval. A cornering lamp system for vehicles.