JPH0433653B2 - - Google Patents

Abstract

PURPOSE:To obtain a system of low cost further with high reliability simplifying constitution, by fixing the irradiation direction of a lighting means in the steering direction side to its one point interlocking to the steering action of a handle with a straight advancing steering position serving as the start point. CONSTITUTION:A handle is turned to the right, and even if the steering action is started to the right, right and left lamps continue their irradiating direction to stop being left as directed toward the front. However, if the steering action is continued further to the right, output terminals 17, 18 of a photosensor 1 obtain 0, 1 and an up/down counter 28 counts its counting value up further by 1. Then DC motors 39, 49 are rotated turning lamp driving shafts 6, 7 to the right and moving clockwise the irradiating direction of the right and left lamps. And the irradiating direction of the right and left lamps is stopped to a deflective angle position of 30 deg. in the right direction by separating slide contacts 34b, 44b from conductor patterns 32, 44. In this way, a system of low cost further with high reliability can be constituted simplifying its construction because the irradiating direction is fixed to one point in the steering direction side interlocking to the steering action of the handle.

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 based on steering wheel operation.

[Prior Art] Vehicles, especially automobiles, are equipped with headlights on the left and right sides of the front of the vehicle as lighting means for illuminating the front at night, but these headlights illuminate only the front of the vehicle. Therefore, when the vehicle approaches a curve, the direction in which the vehicle is traveling cannot be sufficiently illuminated. In other words, when cornering around a curve, sufficient illumination is not provided 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 type configured to detect the rotation angle of the headlights with a rotary encoder and controlled by a servo motor. cornering lamp systems and the like have been proposed.

[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, and its position is controlled. The problem was that it required multiple wiring lines and had low reliability despite its high cost.

[Means for solving problems]

The present invention was made in view of these problems, and includes a sub-reflector rotatably arranged on the back side of a light source, and a sub-reflector fixedly arranged on the back side of the sub-reflector to reflect light from the light source. The first reflector has a main reflector that is directed toward the front.
A second lighting means having the same structure as the first lighting means is placed on the left of the front of the vehicle, and a sub-reflector of the first lighting means is driven by a first motor. The sub-reflector of the second lighting means is rotationally driven by a second motor, and the conductor pattern of the first sliding contact mechanism slides in conjunction with the rotation of the first motor. The position relative to the contact point shall be moved, and the second
The relative position of the conductor pattern of the second sliding contact mechanism and the sliding contact is moved in conjunction with the rotation of the motor, and the relative position of the conductor pattern of the second sliding contact mechanism and the sliding contact is moved in conjunction with the steering wheel steering starting from the straight-ahead steering position. The motor on the steering direction side is driven through the sliding contact mechanism, and the power supply to this motor is cut off when the sliding contact mechanism reaches the second relative position, and the sub-reflector of the lighting means on the steering direction side is driven. is rotated and fixed at a second deflection angle position, and the light from the light source reflected by this sub-reflector is directed in one direction toward the steering direction. The motor on the anti-steering direction side is driven via the sliding contact mechanism on the direction side, the power supply to this motor is cut off when the sliding contact mechanism reaches the first relative position, and the motor on the anti-steering direction side is driven. The sub-reflector is rotationally fixed at a first deflection angle position, and the light from the light source reflected by the sub-reflector is directed toward the front.

[Effect]

Therefore, according to the present invention, in conjunction with, for example, steering the steering wheel to the right starting from the straight steering position, the main reflector continues to irradiate the front direction with the light reflected from the main reflector, and the steering direction side (right The sub-reflector of the lighting means on the steering direction side (direction side) is rotationally fixed at the second deflection angle position, and the reflected light of this sub-reflector is directed in one direction on the steering direction side (rightward side), widening the total diffusion angle. As a result, visibility in both the traveling direction and the front direction is ensured.

Here, the second deflection angle position at which the sub-reflector is rotationally fixed is the relative position between the sliding contact and the conductor pattern of the sliding contact mechanism that moves in conjunction with the rotation of the motor that rotationally drives this sub-reflector. , i.e. by reaching the second relative position of this sliding contact mechanism.

Then, when the steering wheel is steered from this state to the straight-ahead steering position, the sub-reflector of the lighting means on the opposite steering direction side (rightward side) is rotated and fixed at the first deflection angle position in conjunction with this steering wheel steering. The light reflected by the sub-reflector is returned to the front.

Here, the first deflection angle position at which the upper sub-reflector is rotationally fixed is the relative position between the sliding contact and the conductor pattern of the sliding contact mechanism that moves in conjunction with the rotation of the motor that rotationally drives this sub-reflector. , i.e. by reaching the first relative position of this sliding contact mechanism.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The vehicle cornering lamp system according to the present invention will be described 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 slit disk (not shown) linked to the handle, 2 is a processing circuit that processes the electrical signal sent out by the photo sensor 1, and 3 is a processing circuit that processes the electrical signal sent out by the processing circuit 2. A right lamp drive unit 4 drives a headlamp (not shown) (hereinafter referred to as the right lamp) installed on the right side of the front of the vehicle based on the processing signal sent from the processing circuit 2. A left lamp drive unit 5, which drives a headlamp (hereinafter referred to as a left lamp) not shown, is a DC power supply. The photo sensor 1 includes a light emitting diode 11 and a photo transistor 1.
2 and resistors R ₁ and R ₂ ; and a second photo interrupter 16 that includes a light emitting diode 14, a photo transistor 15, and resistors R ₃ and R ₄ .・Output terminal 17 of interrupter 13
and output terminal 18 of photo interrupter 16
In this system, a pulsed electrical signal having the same waveform and alternating "1" level and "0" level as shown in FIGS. 2a and 2b is generated in conjunction with the steering of the vehicle. In other words, by rotating the steering wheel clockwise (clockwise) from the neutral point (straight steering position), the electrical signal in the positive direction centered at 0° is rotated counterclockwise. A negative electrical signal centered at 0° is generated, and a indicates an electrical signal generated at the output terminal 17, 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 rising or falling period 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 AND 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 28u 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 "1" level signal is input to the input terminal 28u 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. Then, 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".
It is becoming more and more level. That is, the second
At point N in the figure, the count value in 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". It is becoming more and more level.
Then, each time the count value of the UP/DOWN counter 28 increases by 1, the output terminals set to the "0" level are set from 29h to 29g, 29f...2.
9a and so on. Also,
Every time the count value in the UP/DOWN counter 28 decreases by 1 from zero, the output terminal to be set to the "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 during countdown after count-up or counter-up after countdown, the output terminals that reach the "0" level are successively incremented or incremented to the adjacent output terminals. Output terminals 29a to 29f of the decoder/driver 29 are connected to output terminals 29g to 29i of the processing circuit 2.
are connected to output terminals 2b and 2e, and 29j to 29o are connected to output terminals 2c and 2f, respectively.

Therefore, the output terminals 2a and 2 of the processing circuit 2
c is connected to the sliding contacts 34b and 34d that are in sliding contact with the semicircular band-shaped conductor patterns 32 and 33 formed on the sliding board 31 of the right lamp drive unit 3, and the driving contact adjacent to the sliding contact 34b is Contact 34 a is connected to the positive polarity side of DC power supply 5 via coil 351 of relay 35 . Further, the sliding contact 34e adjacent to the sliding contact 34d is also connected to the positive polarity side of the DC power supply 5 via the coil 361 of the relay 36, and the coils 351 and 361
Diodes 37 and 38 are connected in parallel. The normally open/normally closed contacts 352 of the relay 35 and the relay 3 are connected to both connection ends of the DC motor 39.
6 normally open/normally closed contacts 362 are connected, relay 3
5 is in the energized state, the common terminal 352c of the normally open/normally closed contact 352 and the normally open contact terminal 35
2a, and one end of the DC motor 39 is connected to the positive polarity side of the DC power supply 5.
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 DC motor 39
The other end is connected to the positive polarity side of the DC power supply 5. That is, normally open/normally closed contacts 352
and 362 normally have their common terminals 352c and 362c and normally closed contact terminals 352b and 36
2b is in a conductive state, and at this time, the DC motor 39
Both ends of are grounded. And DC motor 3
When DC power is supplied to the motor 9 through the normally open/normally closed contact 352, the motor rotates the lamp drive shaft 6 clockwise (clockwise rotation in the figure), and as the lamp drive shaft 6 rotates clockwise, The conductive patterns 32 and 33 are configured to rotate clockwise together with the sliding substrate 31. Further, when DC power is supplied to the DC motor 39 through the normally open/normally closed contact 362, the lamp drive shaft 6 rotates counterclockwise, and as the lamp drive shaft 6 rotates counterclockwise, the conductor pattern 32 The shaft 33 is integrated with the sliding base plate 31 and rotates counterclockwise. Furthermore, by rotating the lamp drive shaft 6 clockwise or counterclockwise, the irradiation direction of the right lamp installed on the right side of the front of the vehicle changes.
As the lamp drive shaft 6 rotates, the irradiation direction of the right lamp rotates to the right as viewed from the driver's seat, and as the lamp drive shaft 6 rotates to the left,
The irradiation direction of the right lamp rotates to the left.

On the other hand, output terminals 2d and 2f of the processing circuit 2
is the conductor pattern 42 of the left lamp drive unit 4.
The sliding contact 44a adjacent to the sliding contact 44b is connected to the positive polarity side of the DC power supply 5 via the coil 451 of the relay 45. Also,
The sliding contact 44e adjacent to the sliding contact 44d is also connected to the positive polarity side of the DC power supply 5 via the coil 461 of the relay 46, and the normally open/normally closed contacts 452 and 452 of the relay 45 are connected to both ends of the DC motor 49. A normally open/normally closed contact 462 of the relay 46 is connected.
Then, normally open/normally closed contacts 452 are connected to the DC motor 49.
When DC power is supplied through the motor, the motor rotates the lamp drive shaft 7 to the right, rotates the irradiation direction of the left lamp installed on the left side of the front of the vehicle to the right, and causes the DC motor 49 to operate normally open. Normally closed contact 46
When DC power is supplied through 2, the lamp drive shaft 7 is rotated to the left, and the irradiation direction of the left lamp is rotated to the left. Note that the output terminals 2b and 2e of the processing circuit 2 are connected to the sliding contacts 34c and 44c of the right lamp drive unit 3 and the left lamp drive unit 4.

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 (straight steering position) (second straight steering position).
point N in the figure). At this time, UP/DOWN counter 28
The count value at is zero, and only the output terminal 29h of the decoder/driver 29 is at the "0" level. In other words, the output terminals 29a to 29
g and 29i to 29o are all at the "1" level, and the sliding contact 3 of the right lamp drive unit 3
4b, 34d and the sliding contacts 44b, 44d of the left lamp drive unit 4 are at the "1" level. Therefore, the coils 351 and 361 of the right lamp drive unit 3 and the left lamp drive unit 4
The coils 451 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.

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.
A signal of level "1" is input to the up input terminal 28u of the UP/DOWN counter 28, and the count value of the UP/DOWN counter 28 is incremented by 1. This results in
The decoder/driver 29 moves up the "0" level signal that it had been sending out from the output terminal 29h to the output terminal 29g and sends it out. However, since the output terminal 29g is connected to the output terminals 2b and 2e of the processing circuit 2 in the same way as the output terminal 29h, power is not supplied to the motors 39 and 49, and the irradiation direction of the right lamp and the left lamp is directed toward the front. Continue to stop while facing. Then, by continuing to steer to the right, the output terminals 17 and 18 of the photo sensor 1 go to the "0" and "1" levels (point c in FIG. 2), and the reset terminal 24r of the R/S flip-flop circuit 24 goes to "0" and "1" levels. '' level, the flip-flop is reset, and the Q output terminal 24q becomes ``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 24
When q becomes ``1'' level again and reaches point e in FIG. 2, the output of AND gate 26 becomes ``1'' level, and the count value in UP/DOWN counter 28 is further incremented by 1.
As the count value increases, the decoder/driver 29 increments the "0" level signal that had been sent out until then and sends it out from the output terminal 29g to the output terminal 29f, thereby driving the coil 351 of the right lamp drive unit 3 and the left lamp drive. Coil 4 of unit 4
51, the sliding contact 34a, the conductor pattern 32, the sliding contact 34b, the output terminal 2a, and the sliding contact 44.
A, a current flows through the path of the conductor pattern 42, the sliding contact 44b, and the output terminal 2d. By energizing the coil 351 and the coil 451,
Common terminals 352c and 452c of normally open/normally closed contacts 352 and 452 and normally open contact terminal 352a
and 452a become electrically connected, the DC motors 39 and 49 rotate, and the lamp drive shaft 6 and lamp drive shaft 7 rotate clockwise. This lamp drive shaft 6
By clockwise rotation of and 7, the irradiation direction of the right and left lamps moves clockwise, and the sliding substrate 31
and 41 rotate clockwise while bringing the sliding contacts 34a to 34e and 44a to 44e into sliding contact with the conductor patterns 32, 33 and 42, 43, that is, while moving the relative positions of the conductor patterns and the sliding contacts. and sliding contacts 34b and 44b
by moving away from conductor patterns 32 and 42 (by reaching a second relative position),
The coils 351 and 451 are de-energized, and the common terminals 352c and 452c of the normally open/normally closed contacts 352 and 452 and the normally open contact terminal 35
2a and 452a become non-conductive, and power supply to DC motors 39 and 49 is cut off. The DC motors 39 and 49 rotate a little due to inertia and then stop, and the sliding substrates 31 and 41 close the opposing gaps 31a and 42 between the conductor patterns 32 and 33.
Sliding contact 3 is located approximately in the center of the opposing gap 41a between and 43.
It stops with 4b and 44b arranged. In this embodiment, at this time, the irradiation direction of the right lamp and the left lamp is at a deflection angle position of 30° to the right (second
It is designed to stop at the deflection angle position).

If you continue to steer to the right even after reaching this state, the count value in the UP/DOWN counter 28 will increase sequentially in the same manner as described above, and the "0" level signal position sent by the decoder/driver 29 will be output. The terminals 29e, 29d...29a are sequentially moved up, but the output terminals 29a to 29e, like the output terminal 29f, are connected to the sliding contacts 34b and 44b via the output terminals 2a and 2d of the processing circuit 2. DC motors 39 and 49
does not rotate, and the irradiation directions of the right and left lamps maintain a deflection angle of 30° to the right.

Next, the operation when the steering wheel is rotated to the left from the straight-ahead steering position will be described. 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 is input to the down input terminal 28d, and the UP/DOWN counter 28 counts the count value by 1. Due to this countdown, the decoder/driver 29 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, the UP/DOWN counter 2
The count value at 8 further counts down by 1, and the "0" level signal sent from the decoder/driver 29 is output from the output terminals 29i to 29j.
It moves back to . As a result, the coil 361 of the right lamp drive unit 3 and the coil 461 of the left lamp drive unit 4 are connected to the sliding contact 34e, the conductor pattern 33, the sliding contact 34d, the output terminal 2c and the sliding contact 44e, the conductor pattern 43, the sliding contact Contact 4
4d, the current flows through the output terminal 2f path, and the normally open/
Common terminal 362 of normally closed contacts 362 and 462
c and 462c and normally open contact terminals 362a and 462a are brought into conduction, DC motors 39 and 49 rotate, and lamp drive shaft 6 and lamp drive shaft 7 rotate counterclockwise. As the lamp drive shafts 6 and 7 rotate counterclockwise, the irradiation directions of the right and left lamps move counterclockwise, and the sliding substrates 31 and 41 rotate counterclockwise, causing the sliding contacts 34d and 44d to rotate counterclockwise.
is separated from the conductor patterns 33 and 43, the energization of the coils 361 and 461 is released, and the common terminal 3 of the normally open and normally closed contacts 362 and 462 is removed.
62c and 462c and the normally open contact terminals 362a and 462a are disconnected, and the DC motor 3
Power supply to 9 and 49 is cut off. As a result, the DC motors 39 and 49 rotate slightly due to their inertia and then stop. In this example,
At this time, the irradiation directions of the right lamp and the left lamp stop at a deflection angle position of 30° in the left direction.

If the left steering is continued even after reaching this state, the count value in the UP/DOWN counter 28 will sequentially decrease in the same manner as described above, and the "0" level signal position sent by the decoder/driver 29 will be output. The terminals 29k, 29l...29o are sequentially moved down, but the output terminals 29k to 29o, like the output terminal 29j, are connected to the sliding contacts 34d and 44d via the output terminals 2c and 2f of the processing circuit 2. DC motors 39 and 49
does not rotate, and the irradiation directions of the right and left lamps maintain a deflection angle of 30° to the left.

In this embodiment, the operation was explained when the steering wheel was rotated clockwise and counterclockwise from the straight-ahead steering position. However, the count value in the UP/DOWN counter 28 is sequentially counted down or counted up, and the count value in the decoder/driver 29 is "0".
The output terminal position that becomes the level moves. but,
The output terminal position at "0" level is 29a to 29
e, 29j to 29o, the DC motors 39 and 49 are not driven again, and the right lamp and left lamp continue to maintain the deflection angle position of 30 degrees to the right or left. And UP/DOWN counter 2
The count value at 8 goes down and the decoder/
When the output terminal 29g of the driver 29 starts sending out a "0" level signal, or UP/DOWN
The count value in the counter 28 increases,
When the output terminal 29i of the decoder/driver 29 begins to send out a "0" level signal, the DC motors 39 and 49 are re-driven, and the sliding contact 3
4c and 44c are conductor patterns 33 and 43
By moving further away (by reaching the first relative position), the irradiation directions of the right and left lamps face forward (first deflection angle position).
It is returned to and stopped.

As described above, according to the cornering lamp system according to the present embodiment, the irradiation directions of the right lamp and the left lamp can be moved and fixed to one point on the steering direction side in conjunction with the steering wheel steering starting from the straight-ahead steering position. Therefore, it is possible to cover the movement of the field of view during cornering, improving safety when driving at night. In other words, even by simply moving and fixing the irradiation directions of the right and left lamps to one point in the direction of travel, it is possible to ensure sufficient visibility during cornering by appropriately selecting the deflection angle position. Compared to a conventional continuously variable irradiation direction system using a servo motor or the like, the configuration is simplified, and a low-cost and highly reliable system can be configured.

Note that the rotational movement of the right lamp and left lamp in the irradiation direction by the lamp drive shafts 6 and 7 may move the entire right lamp and left lamp, but in this embodiment, visibility in the front direction is also ensured. For this purpose, a movable lamp system using a sub-reflector is adopted. That is, FIG. 3 shows an example of this sub-reflector movable lamp system, in which 51 is a main reflector, 52 is a sub-reflector, and 53 is a light source. The sub-reflector 52 is adapted to rotate in conjunction with the lamp drive shaft 6 or 7 shown in FIG. When the automobile is traveling straight, the directions of light reflected by the main reflector 51 and the sub-reflector 52 are in the same direction (front direction). For example, when steering to the right from such a state, the lamp drive shafts 6 and 7 rotate clockwise in conjunction with the steering wheel steering, as explained using FIG. It rotates to the swing angle position of 30° to the right and stops as shown in the figure. That is, while the light reflected from the main reflector 51 continues to illuminate the front, the light reflected from the sub-reflector 52 illuminates 30° to the right, and the total diffusion angle expands to reflect the direction of travel and the direction of travel. Visibility to both sides in the front direction is ensured. By using such a sub-reflector movable lamp system, the cornering lamp system of this embodiment can achieve a practically sufficient performance.

In addition, it is possible to apply a technology that uses a flexible wire and moves the sub-reflector mechanically in conjunction with steering wheel steering, but if such technology is applied, the wire will stretch due to temperature changes and changes over time. There is a possibility that a deviation will occur between the first deflection angle position and the second deflection angle position at which the sub-reflector is rotationally fixed. In particular, if a deviation occurs in the first deflection angle position (front-facing state), this is dangerous because it gives a phantom feeling to the driver of an oncoming vehicle when the vehicle is traveling straight ahead. On the other hand, according to the sub-reflector movable lamp system according to this embodiment, the first deflection angle position and the second deflection angle position are determined by the relative positions of the conductor pattern and the sliding contact. , which is not affected by temperature changes, aging, etc., and in particular does not cause any deviation in the first deflection angle position, so that it is possible to eliminate the illusion that may be given to the driver of an oncoming vehicle when driving straight. This improves both reliability and safety.

FIG. 5 is a circuit diagram showing another embodiment of this vehicle cornering lamp system. In this figure, the same reference numerals as in FIG. 1 indicate the same constituent elements, and the explanation thereof will be omitted. However, in the processing circuit 2 in this embodiment, the decoder/driver 2
9 output terminals 29a to 29f and 29j to 29
o is connected to the output terminals 2a and 2c via inverters 54 and 55, and the relay coil 81 of the right lamp drive unit 8 and the left lamp drive unit 9 are connected to the output terminals 2a and 2c.
One end of the relay coil 91 is connected.

The right lamp drive unit 8 includes a DC motor 82 and a lamp drive shaft 83 that is rotationally driven by the DC motor 82, and a movable contact (sliding contact) 84 rotates integrally with this lamp drive shaft 83. It is configured as follows. This movable contact 84 is connected to the positive polarity side of the DC power supply 5, and contact portions 84a and 84b formed at both ends thereof are arranged at the lower end as the lamp drive shaft 83 rotates. Arc-shaped conductor pattern 85
and 86 in sliding contact. The conductor pattern 85 is the normally closed contact terminal 8 of the first normally open/normally closed contact 87 driven by the relay coil 81.
7b, and its common terminal 87c is connected to one end of the DC motor 82. Also,
The conductor pattern 86 is connected to the normally open contact terminal 88a of the second normally open/normally closed contact 88 driven by the relay coil 81, and the common terminal 88a of the second normally open/normally closed contact 88 is driven by the relay coil 81.
8c is connected to the other end of the DC motor 82.
The relative positional relationship between the movable contact 84 and the conductor patterns 85 and 86 is such that when power is not supplied to the relay coil 81, normally open and normally closed contacts 87 and 8
When the common terminals 87c and 88c of 8 are connected to the normally closed contact terminals 87b and 88b, the contact portions 84a and 84b are in a non-contact and contact state with the conductor patterns 85 and 86, as shown in the figure. It's getting old. Then, the contact portion 84b, the conductor pattern 86, the normally open/normally closed contact 8
By the current supplied through the path 8, the DC motor 8
2 rotates clockwise to rotate the lamp drive shaft 83 to the right in the figure, and even after the contact portion 84b of the movable contact 84 is separated from the conductor pattern 86, the contact portion 84a and the conductor pattern 85 remain connected. is designed to maintain that contact. It goes without saying that the DC motor 82 is rotated counterclockwise by the current supplied through the path of the contact portion 84a, the conductor pattern 85, and the normally open/normally closed contacts 87, thereby rotating the lamp drive shaft 83 to the left. Relay coil 8
1, the normally open contact terminal 87a and the normally closed contact terminal 88b of the normally open/normally closed contacts 87 and 88 are grounded.

Although the structure of the right lamp drive unit 8 has been described above, the structure of the left lamp drive unit 9 is similar, and each part is given a number corresponding to that of the right lamp drive unit 8, and a description thereof will be omitted. In this embodiment, as the lamp drive shafts 93 and 83 rotate, the
A left lamp system 101 and a right lamp system 1 with movable sub-reflectors as shown in FIG.
00 is now driven. That is,
In the figure, 100a and 101a are main reflectors, 100b and 101b are sub-reflectors, and 100c and 101c are light sources. Lenses 100d and 101d are arranged in front of the light sources 100c and 101c, and the lens 100d has a wave ridge portion 100d ₁ that is sparse on the left side and dense on the right side when facing the front direction of irradiation.
A wave crest portion 101d ₁ is formed in the lens 101d, with a sparse shape on the right side and a dense shape on the left side. The sub-reflector 100b is configured to rotate clockwise (clockwise in the figure) by clockwise rotation of the lamp drive shaft 83, and the sub-reflector 101b is rotated counterclockwise (clockwise in the figure) by clockwise rotation of the lamp drive shaft 93. (Turn left (as shown)). Further, when the lamp drive shafts 83 and 93 of the sub-reflectors 100b and 101b are positioned as shown in FIG. 5, the sub-reflectors 100b and 101b are stopped facing forward as shown in FIG. 6.

The operation of the cornering lamp system configured as described above will be explained below. That is, it is assumed that the automobile is currently traveling straight ahead and the steering wheel is in the straight ahead steering position. At this time, the decoder/
Output terminals 29a to 29e and 2 of driver 29
9j to 29o are in the "1" level state, so the output levels of the output terminals 2a and 2c are inverted by the inverters 54 and 55 and become the "0" level. That is, at this time, no current flows through the relay coils 81 and 91 of the right lamp drive unit 8 and the left lamp drive unit 9, and the normally open and normally closed contacts 87, 88 and 97, 98 maintain the state shown in the figure. Therefore, the DC motors 82 and 92 are not supplied with power from the DC power supply 5, and the lamp drive shafts 83 and 93 do not rotate, so that the sub-reflectors 100b and 101b shown in FIG.
continues to stop facing forward. Thereby, the light emitted from the light sources 100c and 101c is reflected in the same direction by the main reflector 100a, the sub-reflector 100b, the main reflector 101a, and the sub-reflector 101b, and is irradiated in the front direction via the lenses 100d and 101d. Ru. At this time, the light emitted through the wave crest parts 100d ₁ and 101d ₁ of the lenses 100d and 101d is slightly diffused to the right and left through the dense parts, and the total diffusion angle as a lamp system is Expand.

However, when right steering is started from such a state, the output terminal position of the decoder/driver 29 at the "0" level moves from 29h to 29g, and the output terminal 29f outputs a "0" level signal. At the time of starting, the output terminal 2a becomes the "1" level, and the relay coil 8 of the right lamp drive unit 8
1 is energized and energized. By energizing this relay coil 81, its normally open and normally closed contacts 87 and 8
The common terminals 87c and 88c of 8 and the normally open contact terminals 87a and 88a are electrically connected, and the DC motor 82 has the contact part 84b of the movable contact 84, the conductor pattern 86, the normally open/normally closed contact 88, and the normally open/normally closed contact. A drive current begins to flow through the path of contact 87. This drive current rotates the DC motor 82 clockwise, rotates the lamp drive shaft 83 clockwise, and rotates the sub-reflector 100b clockwise. Due to this rotation of the sub-reflector 100b, the irradiation direction of the reflected light on the sub-reflector 100b starts to move rightward with respect to the irradiation direction of the reflected light on the main reflector 100a. Then, as the lamp drive shaft 83 rotates clockwise, the contact portion 84a of the movable contact 84 comes into contact with the conductor pattern 85 and moves, that is, the relative position between the conductor pattern and the movable contact moves. When the contact portion 84b separates from the conductor pattern 86 (at the time when it reaches the second relative position), the supply of drive current to the DC motor 82 is cut off. That is, at this point, the rotational movement of the sub-reflector 100b is stopped, and the irradiation direction of the reflected light on the sub-reflector 100b is fixed at one point (second deflection angle position) in the steering direction of the steering wheel. FIG. 7b shows the stopped state of the sub-reflector 100b at this time, and the reflected light at the sub-reflector 100b is reflected by the lens 10.
The light is further diffused to the right through the dense portion of the wave crest portion 100d1 at 0d and is emitted.

On the other hand, the relay coil 91 in the left lamp drive unit 9 is connected to the output terminal 2 of the processing circuit 2 at this time.
Since c continues to maintain the "0" level, no energizing current flows, and the sub-reflector 101b of the left lamp system 101 continues to face the front and stop.
In other words, when right steering is performed with the straight-ahead steering position as the starting point, only the sub-reflector 100b of the right lamp system 100 moves to a predetermined deflection angle position on the steering direction side in conjunction with the steering wheel steering and stops, and the right lamp The spread angle of the system 100 spreads in the steering direction, ie, the direction of travel, to ensure visibility during cornering. At this time, the front visibility is secured by the left lamp system 101 and the main reflector 100a of the right lamp system 100, so cornering to the right can be performed more safely.

When steering to the left starting from the straight-ahead steering position, the output terminal 2c of the processing circuit 2 becomes the "1" level, and the relay coil 9 of the left lamp drive unit 9
1 is energized, the lamp drive shaft 93 is driven by the DC motor 92, and the left lamp system 10
The first sub-reflector 101b rotates counterclockwise. Then, when the contact portion 94b of the movable contact 94 is separated from the conductor pattern 96, the DC motor 9
2 stops, and the irradiation direction of the reflected light on the sub-reflector 101b is fixed at one point on the steering direction side. FIG. 7a shows the sub-reflector 101 at this time.
b shows the stopped state, and the reflected light at the sub-reflector 101b is reflected by the wave crest portion 101d ₁ of the lens 101d.
The light is further diffused to the left through the dense portion of the light beam and then emitted. On the other hand, since the output terminal 2a of the processing circuit 2 continues to maintain the "0" level at this time, no energizing current flows through the relay coil 81 in the right lamp drive unit 8, and the sub-reflector 100b of the right lamp system 100 Continue to stop facing forward. In other words, when left steering is performed with the straight-ahead steering position as the starting point, only the sub-reflector 101b of the left lamp system 101 moves to a predetermined deflection angle position on the steering direction side in conjunction with the steering wheel steering and stops, and the left lamp The divergence angle of the system 101 spreads in the steering direction, ie, the direction of travel, to ensure visibility during cornering. At this time, the front visibility is secured by the right lamp system 100 and the main reflector 101a of the left lamp system 101, so cornering to the left can be performed more safely.

In this embodiment, the operation was explained when the steering wheel was rotated clockwise and counterclockwise from the straight-ahead steering position. Even if the output terminal position of the decoder/driver 29 becomes "0" level is 29a to 29e, 29j
~29o, the DC motors 82 and 92 are not driven again, and the right lamp system 100 and the left lamp system 101 continue to maintain fixed expanded irradiation in the right and left directions. and,
When the count value in the UP/DOWN counter 28 goes down and the output terminal 29g of the decoder/driver 29 starts to send out a "0" level signal, or when the count value in the UP/DOWN counter 28 goes up and the decoder /driver 2
At the point when the output terminal 29i of the motor 9 begins to send out a "0" level signal, the DC motor 82 or 92
However, the movable contact 84, contact portion 84a, conductor pattern 85, normally open/normally closed contact 87, normally open/normally closed contact 88
Alternatively, the movable contact 94 is redriven through the path of the contact portion 94a, the conductor pattern 95, the normally open/normally closed contact 97, and the normally open/normally closed contact 98, and the contact portions 84a and 9
4a away from the conductor patterns 85 and 95 (by reaching the first relative position), the sub-reflectors 100b or 101b of the right lamp system 100 and the left lamp system 101 face forward (first deflection). angle position) and stop.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the light reflected from the main reflector continues to be irradiated in the front direction in conjunction with, for example, steering the steering wheel to the right starting from the straight-ahead steering position. , the sub-reflector of the lighting means on the steering direction side (right side) is rotationally fixed at the second deflection angle position, and the reflected light of this sub-reflector is directed in one direction on the steering direction side (right side), and the total The diffusion angle widens, ensuring visibility both in the forward direction and in the front direction.If the steering wheel is steered from this state to the straight-ahead steering position, the steering wheel will move in the opposite direction in conjunction with this steering wheel steering. (right side)
The sub-reflector of the lighting means is rotated and fixed at the first deflection angle position, and the reflected light of the sub-reflector is returned to the front direction, which is compared to a conventional system that continuously changes the irradiation direction using a servo motor or the like. , the configuration is simplified, and a low-cost and highly reliable system can be configured.

Further, according to the present invention, the first and second deflection angle positions at which the sub-reflector is rotationally fixed are determined by the conductor pattern of the sliding contact mechanism that moves in conjunction with the rotation of the motor that rotationally drives the sub-reflector. and the sliding contact, i.e. by reaching the first and second relative positions of this sliding contact mechanism, such as when moving the sub-reflector using a flexible wire. It is not affected by changes or aging, etc.
In particular, as long as there is no deviation in the first deflection angle position (facing the front), it is possible to eliminate the illusion that may be given to the driver of an oncoming vehicle when driving straight, and improve reliability and safety. Improve together.

[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 an explanatory diagram of the operation of the right lamp and left lamp, and FIG. 5 is a circuit configuration showing another embodiment of the vehicle cornering lamp system according to the present invention. 6 is a schematic configuration diagram of a right lamp and left lamp system driven using this cornering lamp system, and FIG. 7 is an explanatory diagram of the operation of this right lamp and left lamp system. 1...Photo sensor, 2...Processing circuit, 3...
Right lamp drive unit, 4...Left lamp drive unit, 5...DC power supply, 6, 7...Lamp drive shaft, 39, 49...DC motor, 51...Main reflector, 52...Sub reflector, 53... …
Light source, 32, 33, 42, 43... Conductor pattern, 34a to 34e, 44a to 44e... Sliding contact, 35, 36, 45, 46... Relay.

Claims (1)

[Claims] 1. A sub-reflector rotatably arranged on the back side of the light source, and a main reflector fixedly arranged on the back side of the sub-reflector to reflect the light from the light source and direct it towards the front. a first lighting means arranged on the right side of the front of the vehicle; a second lighting means configured similarly to the first lighting means and arranged on the left side of the front of the vehicle; and a sub-reflector of the first lighting means. a first motor that rotationally drives the sub-reflector of the second lighting means; a second motor that rotationally drives the sub-reflector of the second lighting means; and a relative movement between the conductor pattern and the sliding contact in conjunction with the rotation of the first motor. a first sliding contact mechanism whose position moves; a second sliding contact mechanism whose relative position between the conductor pattern and the sliding contact moves in conjunction with the rotation of the second motor; and a straight steering position. The motor on the steering direction side is driven via the sliding contact mechanism on the steering direction side in conjunction with the steering wheel steering starting at The sub-reflector of the lighting means on the steering direction side is rotated and fixed at the second deflection angle position, the light from the light source reflected by this sub-reflector is directed in one direction on the steering direction side, and from this state When the steering wheel is steered to the straight steering position, the motor on the side opposite to the steering direction is driven via the sliding contact mechanism on the side opposite to the steering direction, and power is supplied to this motor through the sliding contact mechanism on the side opposite to the steering direction. irradiation direction variable means that cuts off when the light source reaches the relative position, rotates and fixes the sub-reflector on the side opposite to the steering direction at a first deflection angle position, and directs the light from the light source reflected by the sub-reflector toward the front. Cornering lamp system for vehicles.