JPS6277251A - Cornering lamp system for vehicle - Google Patents

Abstract

PURPOSE:To illuminate the advance direction and front direction of a car simultaneously for safety during travel at night by making the illumination direction of a lamp on the steering direction side variable together with the handle steering and making the illumination direction of a lamp opposite to the steering direction side fixed or smaller than that on the steering direction side. CONSTITUTION:The level condition of the electric pulse signal sent, when a handle is rotated clockwise or counter-clockwise from a neutral point, from output terminals 17, 18 of a photosensor 1 fitted to a slit disk interlocked with the handle is processed by an AND gate 26 of 27 of a processing circuit 2. Next, it is converted into a count value by an UP/DOWN counter 28 to select the output terminal of a decoder/driver 29. Then, a DC motor 39 is rotated, and the illumination direction of a lamp is changed in response to the steering direction and quantity. In this case, the DC motor 42 opposite to the steering direction is stopped. In addition, contact points of slide substrates 31, 42 on both sides are made asymmetric, and the deflection angle of the lamp opposite to the steering direction side is made smaller than that of the steering direction side, thus a wide illumination range can be secured.

Description

[Detailed description of the invention] [Industrial application field] The present invention is equipped with all lighting means on the left and right sides of the front of the vehicle.

The present invention relates to a cornering lamp system for a vehicle in which the irradiation direction of the lamp light means is varied in conjunction with steering wheel steering.

[Prior Art] Vehicles, especially automobiles, are equipped with headlamps on the left and right sides of the front as the next lighting means for illuminating the front at night, but these headlamps are completely fixed only in the front of the automobile. However, when the vehicle approaches a curve, the direction in which the vehicle is traveling cannot be sufficiently illuminated. 9. When cornering around a curve, etc., there was a risk that sufficient illumination would not be provided in the direction in which the vehicle was actually traveling, creating a danger.

Therefore, in order to improve this kind of problem, conventional methods,
A cornering lamp system has been proposed in which the direction of illumination of headlights is varied in conjunction with the steering of the vehicle's steering wheel, and is configured to illuminate the direction of travel.

[Problem that the invention seeks to solve]

However, with conventional cornering lamp systems, the illumination direction of the headlights installed on the left and right sides of the front is symmetrically variable in conjunction with steering wheel steering to illuminate the direction of travel. When driving on a road, for example, a problem arises in that the front view that was previously visible suddenly disappears from view.

Means for Solving the Problems] The present invention has been made in view of the above problems.
The irradiation direction of the lighting means on the steering direction side is made variable in conjunction with steering wheel steering, and the irradiation direction of the lighting means on the side opposite to the steering direction is fixed.

Further, the deflection angle in the irradiation direction of the lighting means on the side opposite to the steering direction is made smaller than the deflection angle in the irradiation direction of the lighting means on the side in the steering direction.

[Effect]

Therefore, according to the present invention, the lighting means on the side in the steering direction can illuminate the entire direction of travel, and the lighting means on the side opposite to the steering direction can illuminate the front direction across the width of the vehicle.

〔Example〕

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, reference numeral 1 denotes a slit disk linked to the handle (not shown); a photosensor 52 attached to 9 is a processing circuit that processes the electrical signal sent out from this photosensor 1;
4 is a processing signal sent from the Ishigaki circuit 2, which drives a headlight (not shown) installed on the right side of the front of the vehicle (hereinafter referred to as the right lamp) based on the processing signal sent by the A left lamp drive unit 5 is a DC power supply that drives a headlamp (not shown) (hereinafter referred to as a left lamp) mounted on the left side of the front of the vehicle based on No. 1. The photosensor 1 is a light emitting diode 11. A first photo-interrupter 13 consisting of a phototransistor 12 and resistors R1+R2, and a light emitting diode 14. It is composed of a phototransistor 15 and a second photo-interrupter 16 consisting of resistors R3r and R4, and the output terminal 17 of the 7-oto-interrupter 13 and the output terminal 18 of the photo-interrupter 16 are connected to the steering wheel of the automobile. 11 as shown in Figure 2 (a) and (b).
Pulsed electrical signals of the same waveform are generated which alternate between level and 1-OJ level. That is,
By rotating the handle clockwise (clockwise) from the neutral point, electric No. 4g in the positive direction centered at 0° will be
By rotating counterclockwise (slightly rotating to the left), a negative electric signal centered at 0' is generated, and (a) shows the electric signal generated at the output terminal 17.
indicates an electrical signal generated at the output terminal 18. The electrical signal generated at the output terminal 1γ leads the electrical signal generated at the output terminal 18 by 90′ in phase.

When the handle is at the neutral point, that is, θ in Figure 2
'', the electrical signal generated at the output terminal 18 is in the falling or rising period when it changes from the rlJ level to the "0" level, and from the rOJ level to the "1" level, and the output The electrical signal generated at terminal 17 is at the "0" level.

On the other hand, the processing circuit 2 includes Nant gates 21, 22, inverters 23. It is composed of an R-S flip 70 tube circuit 24゜25, AND gates 26, 2γ, an UP/DOWN counter 28, and a decoder/driver 29.30, and the R-8 flip 70 tube circuits 24 and 25 receive negative logic inputs. Or game) 241° 242 and 251, 2
52. Then, the electrical signal generated at the output terminal 17 of the photosensor 1 is transmitted to the Nant gate 21.
and one end of 22, and one end of R-87 lip 70 tube circuit 24.
and 25 reset terminals 24r and 25r, and the output terminal 1 of the photosensor 1
-5 Ki Ig generated at 8 is one end of AND gate 26.

The signal is input to the other end of the Nant gate 22 and the inverter 23. The electrical signal output from the inverter 23 is input to the other end of the Nandt gate 21 and one end of the AND gate 27.

In addition, the outputs of the Nant gates 21 and 22 are R-87
Lip 70 tube circuit 24 and 25 set terminal 24g
and 25a, R-S
The outputs of the flip 70 tube circuits 24 and 25 are input to the other ends of AND gates 26 and 27 via Q output terminals 24q and 25q'e. Then, the outputs of AND gates 26 and 21 are UP/DOWN.
It is designed to be input to the up input terminal 28u and down input terminal 28d of the counter 28, and the UP/DO
The WN counter 28 outputs a signal to the input terminal 28u or 28d.
Each time a signal of level 1 is input, the count value is increased or decreased, and a digital signal corresponding to the count value is sent to input terminals 29A to 29D and of decoders/drivers 29 and 30 via output terminals 28A to 28D. 30A to 30D. and,
Decoders/drivers 29 and 30 receive this digital signal and output terminals 29a to 29o and 30a to 30.
A predetermined output terminal among the terminals o is selected and its level is set to "0". That is, at point N in FIG.
0h' is selected, and only the levels of the output terminals 29h and 30h are set to the 10'' level. Then, each time the count value in the U P/D OWN counter 28 increases by 1, the output terminals ffi 29h to 29g, 29f, etc., go to the 10'' level.
30g from a and 30h, 30f...30
It is designed to be incremented sequentially as a. Also, U P/
D The count value in the OWN counter 28 changes from zero to 1.
Each time the output terminal metal 2 reaches the rOJ level,
From 9h, 29i = 29j...29o, and from 30h, 30i, 3Qj...300, and so on. It goes without saying that even during countdown after count-up or count-up after countdown, the output terminals that reach the "0" level are successively incremented or incremented to the adjacent output terminals. Output terminals 29a and 29b of the decoder/driver 29 are connected to the output terminal 2a of the processing circuit 2, 29c and 29d are connected to the output terminal 2b, 29e and 29f are connected to the output terminal 2c, and 29a to 29o are connected to the output terminal 2d. are connected to each other. In addition, output terminals 30a to 3 of the decoder/driver 30
0i is connected to the output terminal 2e of the processing circuit 2, 30j and 3
0k is connected to the output terminal 2f, 30t and 30m are connected to the output terminal 2g, and 30n and 30o are connected to the output terminal 2h.

Thus, the sliding contacts 3 in which the output terminals 2a to 2d of the processing circuit 2 are in sliding contact with the semicircular band-shaped conductor patterns 32 and 33 formed on the sliding board 31 of the right 7 lamp drive unit 3
The sliding contact 34a adjacent to the sliding contact 34b is connected to the positive polarity side of the DC power source 5 via the coil 351 of the relay 35. Further, the positive polarity side of the DC power supply 5 is connected to the sliding contact 341 via the coil 361 of the relay 36, and the coils 351 and 36
1 has diodes 37 and 38 connected 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 5 is connected to one end of the DC motor 39. Further, when the relay 36 is in the energized state,
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 5 is connected to the other end of the DC motor 39. That is, normally open/normally closed reading points 352 and 362 are normally connected to their common terminals 352c and 362c and normally closed contact terminal 35.
2b and 362b are in a conductive state, and at this time both ends of the DC motor 39 are grounded. When 1 current power is supplied to the DC motor 39 through the normally open/normally closed contacts 352, the motor causes the lamp drive shaft 6 to rotate clockwise (clockwise rotation in the figure). 6 rotates clockwise, the conductive patterns 32 and 33 also rotate clockwise together with the sliding substrate 31. Further, when DC power is supplied to the DC motor 39 via the normally open/normally closed contacts 362, the lamp drive shaft 6 rotates counterclockwise, and as the lamp drive shaft 6 rotates counterclockwise, the conductor pattern 32 and 33 rotates counterclockwise integrally with the sliding base plate 31. Note that by rotating the lamp drive shaft 6 clockwise and counterclockwise, the irradiation direction of the right lamp installed on the right side of the front of the vehicle changes. The illumination direction of the lamp rotates to the right when viewed from the driver's seat.

By rotating the lamp drive shaft 6 to the left, the irradiation direction of the right lamp is rotated to the left.

On the other hand, the output terminals 20 to 2h of the processing circuit 2 are connected to sliding contacts 44e to 44h that are in sliding contact with the conductor patterns 42 and 43 of the left lamp drive unit 4.
The sliding contact 441 adjacent to h is the coil 46 of the relay 46.
1 is connected to the positive polarity side of the DC power supply 5 via fc. The coil 45 of the relay 45 is also connected to the sliding contact 44a.
The positive polarity side of the DC power supply 5 is connected through the DC motor 49, and the normally open/normally closed contacts 452 of the relay 45 and the normally open/normally closed contacts 462 of the relay 46 are connected to both ends of the DC motor 49. Then, when DC power is supplied to the DC motor 49 through the normally open/normally closed contacts 452, the motor rotates the lamp drive shaft 7t clockwise to rotationally move the emission direction of the left lamp to the right. When DC power is supplied to the DC motor 49 via the normally open/normally closed contacts 462, the drive shaft 7 is rotated to the left, and the irradiation direction of the left lamp is rotationally moved to the left.

Next, the operation of the vehicle cornering lamp system configured as described above will be explained. In other words, it is assumed that the Kinpaku motor vehicle is traveling straight and the steering wheel is located at the neutral point (point N in FIG. 2).

At this time, the count value of the UP/DOWN counter 28 is zero, and only the output terminals 29h and 30h of the decoders/drivers 29 and 3υ are at the 10'' level. In other words, the output terminal 29 of the decoder/driver 29
a to 29g and 29i to 29o, output terminals 30a to 30g and 30i to 30o of the decoder/driver 30 are all at the "1" level, and the sliding contacts 34b to 34d of the right lamp drive unit 3 and the left lamp drive The sliding contacts 44f to 44h of the unit 4 are at UrlJ level. Therefore, the coil 3 of the right lamp drive unit 3
51 and 361, coil 4 of left lamp drive unit 4
51 and 461 are not energized and the DC motors 39 and 49 do not rotate. In other words, the irradiation directions of the right lamp and the left lamp are stopped facing the front at this time.

However, in such a situation, turn the steering wheel to the right and use the right edge rudder? When started, photo interrupters 13 and 16
The electrical signal sent out by rxJs becomes the "0" level (point a in FIG. 2). As a result, Nantes Gate 2
The output of 1 changes from the "1" level to the "QJ level," the L@S frig flow knob circuit 24 is set, and the Q
The output terminal 24q becomes 1-1'' level. Further right edge r
(e ff: "f") When reaching point b in Fig. 2, both output terminals 1T and 1B of photosensor 1 become [1
”Level 9 and ANDGATE 26 are both 1-
1” level, and the UP/D OWN counter 28
A signal of level "1.j" is input to the up input terminal 28u of the
Only count up. As a result, the decoders/drivers 29 and 30 begin to send out the "O" level signals that they had been sending out to the output terminals 29g and 30g. At this time, output terminals 29g and 3
Since 0g is connected to the output terminals 2d and 2e of the processing circuit 2, no power is supplied to the motors 39 and 49. Then, when steering further to the right, 7 Otosensors 1
The output terminals 17 and 18 of the R-S flip-flop circuit 24 become the 1-O level, and the flip-flop is reset. The Q output terminal 24q becomes 10'' level and prepares for the first count. However, when the 6th point in Figure 2 is reached, the output of the Nantes gate 21 reaches the "L" level! Changed to 2rOJ level.

The R・S7 lip 70 tube circuit 24 is in the set state,
When the Q output terminal 24q becomes "1" level again and reaches point e in FIG. 2, the output of the AND gate 26 becomes "1".
When the level reaches 9, the count value in the UP/DOWN counter 28 further increases by one. Please increase this count value.

The decoders/drivers 29 and 30 output the "0" level signals that had been sent to output terminals 29f and 30f.
The sliding contact 34a and the conductor pattern 32. are attached to the coil 351 of the right lamp drive unit 3. Current flows through the path between the sliding contact 34d and the output terminal 2C. and,
By energizing this coil 351, the normally open/normally closed contact 3
52 common terminal 352C and the normally open contact terminal 352a are not electrically connected, the DC motor 39 rotates and the lamp drive shaft 6 rotates clockwise.

This clockwise rotation of the lamp drive shaft 6 moves the irradiation direction of the right lamp clockwise, that is, in the direction 1e.

The sliding substrate 31 rotates clockwise while bringing the sliding contacts 34a to 34i into sliding contact with the conductive patterns 32 and 33 thereof. When the sliding contact 34d moves away from the conductor pattern 32, the energization of the coil 351 of the relay 35 is released, and the common terminal 352c of the normally open/normally closed contact 352 and the normally open contact terminal 352a are connected to each other. becomes non-conductive, and the DC motor 39
The power supply to is cut off.

The DC motor 39 rotates a little due to inertia and then stops, and the sliding shaft 31 stops with the sliding point 34d located approximately in the center of the 21 interspaces 31a between the four-body patterns 32 and 33. The DC motor 49 is connected to the decoder/driver 3
Even if 0 manipulates and sends out a signal at the OJ level from its output terminal 3Llf, the output terminal 30f will not reach the sliding contact 44e.
Because it is connected to the lamp, it does not rotate, and the left lamp remains in a stopped state. Thereafter, in the same manner, by continuing to steer to the right, the count value in the 5 UP/DOWN counter 28 increases sequentially, and the position of the "0" level signals sent by the decoders/drivers 29 and 30 increases sequentially. , while the 11i flow motor 49 is stopped, the DC motor 39 rotates four times, and the irradiation direction of the right lamp shifts clockwise in stages! help

Next, the operation when the handle is moved to the left once to the neutral point will be described. That is, when the left hand control e is performed from point N in FIG. 2, both output terminals 17 and 18 of photosensor v1 become "1" level (point f in FIG. 2),
The output of the Nant gate 22 becomes “0” level, and R”
The S flip-flop circuit 25 is set, and the Q output terminal 25q goes to the "1" level. When point g in FIG. 2 is reached, output terminals 17 and 18 become "1" and rO
The power of J Level, Nashi, and Gate 27 together became ``1''.
'' level, a signal of level ``1'' is input to the down input terminal 28d of the UP/D OWN counter 28, and the count value of the UP/D OWN counter 28f'iJ is counted down by 1. This countdown causes the -decoders/drivers 29 and 30 to raise the 1-0'' level signals that they had been sending out to the output terminals 29i and 30i and send them out. When the point h in FIG. 2 is reached, the output terminals 17 and 18 both go to the "0" level, the R-S flip 70 tube circuit 25 is reset, and the Q output terminal 25q goes to the "10" level. and prepare for the next count. 2, the count value in the UP/DOWN counter 28 further counts down by 1, and the position of the "0" level signal sent by the decoders/drivers 29 and 30 is at the output terminal 29j. and moves down to 30j. As a result, the coil 46 of the left lamp drive unit 4
1 has a sliding contact 441. Conductor pattern 43. Sliding contact 44
f, a current t flows in the path of the output terminal 2f, the common terminal 462c of the normally open/normally closed contact 462 and the normally open contact terminal 462a become electrically connected, the DC motor 49 rotates, and the lamp drive shaft 7 rotates counterclockwise. do. This counterclockwise rotation of the lamp drive shaft 7 causes the irradiation direction of the left lamp to move counterclockwise, and the sliding contact 44f separates from the conductor pattern 43, and the energization of the coil 461 of the relay 46 is removed, leaving the relay 46 normally open. Normally closed contact 4
The common terminal 462c of 62 and the normally open contact terminal 462a become non-conductive, and the power supply to the DC motor 49 is cut off.

As a result, the DC motor 49 rotates slightly due to inertia and then stops. On the other hand, the DC motor 39 does not rotate because the output terminal 291 that sends out the "0" level is connected to the manual contact 34e, and the right lamp remains in a stopped state. Hereafter, by continuing the left edge fi in the same way, UP/DOWN
The count value in the counter 28 decreases sequentially, and the DC motor 49 rotates intermittently until the rOJ level sent out by the decoders/drivers 29 and 30 (m position is reached at 9 and the DC motor 39 stops!). , the irradiation direction of the left lamp moves stepwise DK to the left.

In this embodiment, the operations for right steering and left steering from the neutral point have been described, but even in the case of left steering after right steering, or right steering after left steering, the UP It goes without saying that the count value in the /DOWN counter 28 is sequentially counted down or counted up, and the irradiation direction of the other lamp changes while one lamp is fixed in accordance with this count value. In other words, when steering from right to left until reaching the neutral point, the left lamp is fixed and the direction of illumination of the right lamp changes; when steering from left to right until reaching the neutral point, the left lamp is fixed. , the irradiation direction of the left lamp changes while the right lamp remains fixed.

At this time, right steering and left steering in the right direction centering on the neutral point are defined as the right steering direction, and right steering and left steering in the left direction centering on the neutral point are defined as the left steering direction. In addition, in this actual leak, the stepwise swing angle of the irradiation direction of the right lamp and left lamp is 10", so the right lamp swings to the right at a maximum of 30°, and the left lamp swings to the left by a maximum of 30". It is now possible to do so. In order to maximize such a leaning angle, the sliding contacts 34b to 34e and the sliding contacts 44e to 44h are arranged at equal angular intervals of \'1,
Also, change the irradiation direction of the right lamp and left lamp to 1 in one step.
The distance is sufficient for a 0" swing.

As explained above, according to the cornering lamp system according to the present embodiment, while the illumination direction of the lamp in the anti-steering direction is fixed to the front, the illumination direction of the lamp in the steering direction is varied in conjunction with the steering wheel steering, and This allows for a wider field of vision when cornering, and eliminates the problem of conventional cornering lamp systems where the front of the vehicle, which was previously visible, suddenly disappears from view. Improves safety when driving at night. In this embodiment, the irradiation direction of the right lamp and the left lamp is swung at equal angular intervals and 10 degrees in one step, but the irradiation direction may be swung at unequal angular intervals.
For example, as shown in FIG. 3, the swing angle of the lamp 8 may be configured to increase as it moves away from the center.

That is, in the same figure, the deflection angle θ1 is gradual.

θ2. θ3 is in the relationship θ1 × θ2 × θ3, and the deflection angle θ1. θ2. The relationship between θ3 and vehicle speed is θri, θ2°θ3
The steering angle of the car increases as it rotates, υ.
The speed is getting lower. In other words, near the center, θ′
2. Since the speed is higher than θ3, fine light distribution is required, and it is necessary to rotate at a small angle.

By the way, conventionally proposed cornering lamp systems that perform symmetrical operation on both sides have an advantage in that visibility in the direction of travel is improved. Therefore, if you switch between two-sided operation and one-sided operation according to the user's preference, road conditions, weather conditions, etc.,
It is possible to take advantage of the advantages of both, and to respond to more diverse needs. FIG. 4 shows an embodiment of a cornering lamp system in which switching between two-side operation and one-side operation is possible. In this figure, the same reference numerals as in FIG. 1 indicate the same parts, and the explanation thereof will be omitted.

This cornering lamp system has gjX 2 (f) UP/DO'wN cow:/Y2 in its processing circuit 2.
01. And Kate 202~2 (17, A:y Hearta 2
08, 209. R-S flip-flop circuit 21υ
, 211, and a changeover switch 212, and when the changeover switch 212 is off, that is, the changeover switch 21
When the first to fourth contacts 212a to 212d of 2 are in the open state, the AND gates 202, 203, 2
(An 11" level signal is input to one input terminal of 16 and 207. Therefore, the UP/DOWN counter 1.%- and 201 can perform up-counting and down-counting, and the right ramp and left ramp is both 0!
l] Perform a symmetrical operation.

On the other hand, when the changeover switch 212 is turned on.

In other words, the contacts 212a" to 212 of the changeover switch 212
When d is in the closed state, when the output terminals 29h and 30h of the decoders/drivers 29 and 30 are at the "0" level, the R-S flip-flop circuits 210 and 211 are not in the set state, and the AND gates 203 and 30 are in the set state. One input terminal of 202 becomes "O" level. Therefore, U.P.
/DOWN counter 28 only counts up.
The UP/DOWN counter 201 is in a state where it can only count down. However.

From this state, the output of the AND gate 26 becomes r I
JL/to #tonal, UP/DOWN counter 2B
counts up, and the signal position of the "0" level sent by the decoder/driver 29 is carried to the output terminal 29g, and the R"S7', j block flop circuit 211 enters the reset state. gate 207
At the same time that one input terminal of the AND gate 202 reaches the "0" level, a signal of the Ill level is input to one input terminal of the AND gate 202, and the UP/DOWN counter 201 cannot perform up-counting or down-counting. In this state, the UP/DOWN counter 28 is in a state where it can perform up-counting and down-counting. This state continues until the R-S flip-flop circuit 211 enters the next set state. Therefore, the decoder/driver 30 sends out a fixed "0" level signal from its output terminal 30h, and the decoder/driver 30 29 is UP/
An output terminal corresponding to the count value of the DOWN counter 28 is selected and a signal of "0" level is sent out. In other words, when steering the steering wheel in the right steering direction, only the direction of illumination of the right lamp changes while the direction of illumination of the left lamp is fixed to the front.

Also, output terminals 2 of decoders/drivers 29 and 30
When 9h and 30h are at “o” level, AND gate 2
When the output of 7 reaches the 11" level, the UP/DOWN counter 201 counts down, and the 0 level signal sent by the decoder/driver 30 is transferred to the output terminal 30i. R-87 lip 70 tube circuit 21
0 is the reset state. Korenyoshi, And Gate 2
At the same time that one input terminal of the AND gate 203 reaches the "10" level, a signal of the "L" level is input to one input terminal of the AND gate 203, and the Up/noXvN counter 28
is in a state where it cannot perform up-counting and down-counting, and the UP/DOWN counter 201 is in a state where it can perform up-counting and down-counting. This state continues until the R-S flip 7o tube circuit 210 enters the next set state. Therefore, the decoder/driver 29 sends out a fixed "O" level signal from its output terminal 29h, and the decoder/driver 29 sends out a fixed "O" level signal from its output terminal 29h. The driver 30 selects an output terminal according to the count value of the U P/D OWN counter 201, and sends out a "0" level signal. When steering the steering wheel in the left steering direction, only the direction of illumination of the left lamp changes while the direction of illumination of the right lamp is fixed to the front.

In the above-mentioned embodiments (FIGS. 1 and 4), a cornering lamp system was described in which the direction of illumination of only the lamp on the steering direction side is changed during cornering. The irradiation direction of the lamp on the anti-steering direction side is swung at an angle smaller than the oscillation angle of the irradiation direction of the rung on the direction side.

It is generally sufficient to perform a so-called bilateral asymmetric operation. In other words, in a cornering lamp system that operates on one side, when driving around a corner with a small radius, the lamp on the side in the steering direction rotates by a large angle, so the illumination range of the lamp on the side in the opposite steering direction that illuminates the front and the progress A dark area may occur between the irradiation range of the lamp on the steering direction side that illuminates the direction.

Therefore, if the illumination direction of the lamp on the side opposite to the steering direction is set at such a small angle that the entire dark area is not covered, the entire dark area can be covered by the illumination range of the lamp on the side opposite to the steering direction, thereby improving safety.

Further, if configured as shown in FIG. 6, switching 7t between symmetrical operation on both sides and asymmetrical operation on both sides can be performed according to the user's preference, road conditions, weather conditions, and other conditions. That is, this cornering lamp system includes frequency dividers 220 to 223 and an AND gate 224 in the processing circuit 2.
~231, inverters 232~235, or gate 23
6 to 239, and when the changeover switch 212 is off, the antgelt 224, 226, 2213
, 23t), a 10" bell signal is input to one input of
Since a "1" level signal is input manually to one input of the
UP/DOWN counters 28 and 201 are input with signals output from AND gates 26 and 27 without being frequency divided.
1 performs both the valley amplifier count and the down count normally, and the right lamp and left lamp perform symmetrical operation on both sides.

On the other hand, when the changeover switch 212 is turned on, when the output terminals 29h and 30h of the decoders/drivers 29 and 30 are at the "0" level, the R-87 lip-flop circuits 211 and 210 are set, and the AND gate 22
5, 227, 229, 231 input “1”
” level signal is input to the 5 AND gate 224, 2
A "0" level signal is input to one of the human input terminals 26, 228, and 230. However, when the AND gate 26 sends out a signal of "L" level in such a state, U
The P/DOWN terminals 28 and 201 count up, and the "0" level signals sent from the decoders/drivers 29 and 30 reach the output terminals 29g and 3.
Carry up to 0g is 9, R@S flip-flop circuit 210
is reset.

“1” on one input of AND gates 228 and 230
A signal of level 4S is input to one input of AND gates 229 and 231, and a signal of level "0" is input.

Therefore, during count-up and count-down after the R@S flip-flop circuit 210 is reset, the inputs of the UP/Do~■ counter 28 are not frequency-divided, and the inputs of the UP/DOWN counter 201 are frequency-divided. As a result, the right lamp swings at a large angle, and the left lamp swings at a small angle, resulting in an asymmetrical operation.

On the other hand, output terminals 2 of decoders/drivers 29 and 30
When the AND gate 27 sends out a signal at the "1" level from the state where 9h and 31)h are at the "10" level, the UP/
DOWN power +77 E28 O and 201 count down, and the "0" level signal position sent by decoders/drivers 29 and 30 is transferred to output terminals 29i and 3tli by 9, and R-S flip-flop circuit 211 is reset. and gates 224 and 22
A “1” level signal is input to one input of the AND gate 6, and a “0” level signal is input to one input of the AND gates 225 and 227. Therefore, in the countdown and countup after the R-87 lip-flop circuit 211 is reset, the UP/DOWN counter 211
The input of 01 is not frequency-divided, and the input of the U P/D OWN counter 28 is frequency-divided.The left lamp swings by a large angle and the right lamp swings by a small angle, resulting in an asymmetrical operation.

By switching between the symmetrical motion and the asymmetrical motion in this manner, the advantages of the symmetrical motion and the asymmetrical motion can be mutually utilized, and safety during night driving can be improved.

In this embodiment (FIG. 1 and FIGS. 4 to 6), the processing circuit 2 is constructed of a hardware circuit, but it is also possible to perform the program-controlled H' using a microcomputer or the like. Although a sliding contact is used to detect the rotational position of the headlamp, it may also be detected using light. Further, the deflection angle of the lamp in the irradiation direction may be changed stepwise in conjunction with the steering wheel, and fc may be changed continuously. Furthermore, although this embodiment has been described with reference to an electric cornering lamp, it may also be applied to a mechanical cornering lamp system in which the lamp is moved from a steering wheel blonde via a link, for example, and the lighting means may be In addition to the headlights, auxiliary lights may also be movable.

〔Effect of the invention〕

As explained above, according to the vehicle cornering system according to the present invention, the irradiation direction of the lighting means on the steering direction side is variable in conjunction with steering wheel steering.

Since the irradiation direction of the lighting means on the side opposite to the steering direction is fixed, the deflection angle of the irradiation direction of the lighting means on the side opposite to the steering direction is made smaller than the deflection angle of the irradiation direction of the lighting means on the side of the steering direction. As described below, the lighting means on the steering direction side illuminates the direction of travel.

The lighting means on the side opposite to the steering direction can illuminate the front direction of the vehicle, improving safety during night driving.

[Brief explanation of drawings]

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 diagram showing an output waveform of a photo sensor used in this cornering lamp system. Fig. 4 is a circuit configuration diagram of a cornering lamp system that enables switching between one-sided operation and two-sided symmetrical operation. , FIG. 5 is a circuit diagram of a cornering lamp system that allows asymmetric operation on both sides, and FIG. 6 is a circuit diagram of a cornering lamp system that allows switching between symmetric operation on both sides and asymmetric operation on both sides. 1...7 auto sensor, 2...processing circuit, 3...
...Right lamp drive unit, 4...Left lamp drive unit = 7, 28, 201...UP/DOWN counter, 29.30--Decoder/driver, 31.
41...Sliding board, 32°33.42.43...
・Conductor pattern, 34&~34i, 44a~44i
...Sliding contact, 39.49 ...DC motor, 6
...Right lamp drive shaft, 7...Left lamp drive shaft.

Claims (2)

[Claims] (1) In a cornering lamp system for a vehicle, in which lighting means are provided on the left and right sides of the front of the vehicle, and the irradiation direction of the lighting means is varied in conjunction with steering wheel steering, the irradiating direction of the lighting means on the steering direction side is linked to steering wheel steering. 1. A cornering lamp system for a vehicle, characterized in that a irradiation direction variable means is provided for making the irradiation direction of the lighting means on the opposite steering direction variable and fixed the irradiation direction. (2) In a cornering lamp system for a vehicle, in which lighting means are provided on each side of the front left and right of the vehicle, and the direction of illumination of the lighting means is varied in conjunction with steering wheel steering, the direction of illumination of the lighting means on the steering direction side is linked to steering wheel steering. A cornering lamp system for a vehicle, characterized in that it is provided with an irradiation direction variable means that is variable and makes the deflection angle of the illumination direction of the illumination means on the side opposite to the steering direction smaller than the deflection angle of the illumination means on the side of the steering direction.