JP4066720B2 - Vehicle headlight system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the visibility in a rectilinear travel direction immediately after a steering wheel is started to be returned in the rectilinear travel direction during lighting of a winker. <P>SOLUTION: The headlamp system for the vehicle comprises movable reflectors 12, 22 provided at an interval in a vehicle widthwise direction on the front surface of the vehicle. The headlamp system further comprises a CPU 53 which inputs signals from a steering wheel steering angle detector 30 and a vehicle speed detector 40, calculates the target positions of the irradiating angles of the reflectors 12, 22, sets the target positions of the irradiating angles of the reflectors 12, 22 only at the time of operating winker switches SW4, SW5 to a predetermined irradiating angle, and eliminates the setting of the predetermined angle when the steering angle of the steering wheel once exceeds the steering angle corresponding to the predetermined irradiating angle even when a headlamp switch SW2 is on, the vehicle speed is the predetermined value and the winker switches SW3, SW4 are on, thereby controlling so that the illuminating axes of the reflectors 12, 22 are directed to the irradiating angle target position based on the CPU 53. <P>COPYRIGHT: (C)2003,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a vehicle headlamp system that controls rotation of a movable reflector serving as a light distribution unit according to a steering angle of a steering wheel.
[0002]
[Prior art]
Conventionally, in a vehicle headlamp system, as shown in FIG. 17, headlamps 2 and 3 having movable reflectors 4 and 5 as light distribution means that can be rotated in the left-right direction, a steering angle of a steering wheel, and steering A steering angle detector for detecting a direction, and a signal from the steering angle detector of the steering wheel and a signal from the vehicle speed detector are input to calculate the irradiation angle target position of the irradiation axis of the movable reflectors 4 and 5 Then, while the movable reflectors 4 and 5 are moved toward the irradiation angle target position, when the turn signal switch is turned on, the irradiation axis of the movable reflectors 4 and 5 is fixed at a predetermined irradiation angle. ing.
[0003]
[Problems to be solved by the invention]
However, in this conventional vehicle headlamp system, when the turn signal switch is turned on at an intersection or the like, the irradiation axis of the movable reflector is fixed at a predetermined irradiation angle, and unless the turn signal switch is turned off, the turn angle of the steering wheel is linked. Therefore, the structure is not movable.
[0004]
Therefore, even if you turn around the intersection and start to return the handle to the center, it will not turn off until the winker switch returns the handle to the vicinity of the center, even though the driver has already seen the straight direction. The illumination direction by the movable reflector is directed to the predetermined irradiation angle direction, and the light distribution is diffused. For this reason, there is a difficulty in the visibility in the straight direction immediately after the steering wheel is started to return in the straight direction while the blinker is turned on.
[0005]
In addition, when exiting a blinker at an intersection or the like and entering the intersection, it is difficult to visually recognize a pedestrian at the beginning of a crosswalk if the maximum angle of the illumination axis of the light distribution means is determined based on the steering angle of the steering wheel. There is also a problem.
[0006]
The present invention has been made in view of the above circumstances, and an object of the present invention is to improve the visibility in the straight traveling direction immediately after the steering wheel is returned to the straight traveling direction while the blinker is turned on. The object is to provide a vehicle headlamp system.
[0007]
Moreover, it is providing the vehicle headlamp system which can aim at the improvement of the visibility during turn-on lighting.
[0008]
[Means for Solving the Problems]
The vehicle headlamp system according to claim 1, a steering wheel steering angle detector that outputs a detection signal based on an operation of the steering wheel,
A vehicle speed detector that detects the vehicle speed and outputs a detection signal;
A detection signal from the steering wheel steering angle detection unit and a detection signal from the vehicle speed detection unit are input to calculate an irradiation angle target position of the light distribution means, a headlamp switch is on, and the vehicle speed is a predetermined value or less. And only during turn signal operation Corresponds to the turned blinker Set the target irradiation angle position of the light distribution means to the predetermined irradiation angle. Set the irradiation axis of the other light distribution means to the front Setting means;
Even when the headlamp switch is on and the vehicle speed is equal to or less than a predetermined value and the turn signal switch is on, the steering angle of the steering wheel once exceeds the steering angle corresponding to the predetermined irradiation angle. Irradiation axis control linked with steering wheel operation is performed even when the steering angle is below Release means for releasing the setting of the predetermined irradiation angle;
A motor control unit that controls a motor for driving the light distribution unit so that an irradiation axis of the light distribution unit is directed to the irradiation angle target position based on the setting unit and the release unit; .
[0009]
The vehicle headlamp system according to claim 2, a steering wheel steering angle detector that outputs a detection signal based on an operation of the steering wheel,
A vehicle speed detector that detects the vehicle speed and outputs a detection signal;
When a detection signal from the steering wheel steering angle detection unit and a detection signal from the vehicle speed detection unit are input to calculate the irradiation angle target position of the light distribution means, the clearance switch is on, and the vehicle speed is equal to or less than a predetermined value Moreover, when operating the blinker, regardless of whether the headlamp switch is on or off Corresponds to the turned blinker The irradiation angle target position of the light distribution means is set to a predetermined irradiation angle. Set the irradiation axis of the other light distribution means to the front Setting means;
Even when the clearance switch is on and the vehicle speed is equal to or less than a predetermined value and the turn signal switch is on, the steering angle of the steering wheel once exceeds the steering angle corresponding to the predetermined irradiation angle The irradiation axis control linked to the steering wheel operation is performed even when the steering angle is below Release means for releasing the setting of the predetermined irradiation angle;
And a motor control unit that controls a motor for driving the light distribution means so that an irradiation axis of the light distribution means faces an irradiation angle target position based on the setting means and the release means.
[0010]
The vehicle headlamp system according to claim 3, a steering wheel steering angle detector that outputs a detection signal based on an operation of the steering wheel,
A vehicle speed detector that detects the vehicle speed and outputs a detection signal;
A detection signal from the steering wheel steering angle detector and a detection signal from the vehicle speed detector are input to calculate an irradiation angle target position of the light distribution means, the headlamp switch is on, and the vehicle speed is the first. When the speed is lower than the low-speed mode judgment reference value, the low-speed mode is set. Corresponds to the turned blinker The irradiation angle target position of the light distribution means is set to a predetermined irradiation angle. Set the irradiation axis of the other light distribution means to the front Setting means;
The low-speed mode is maintained when the headlamp switch is on and the vehicle speed is equal to or higher than the first low-speed mode determination reference value and the vehicle speed is equal to or lower than a second low-speed mode determination reference value greater than the first low-speed mode determination reference value. When the steering angle of the steering wheel exceeds the steering angle corresponding to the predetermined irradiation angle, the setting of the predetermined irradiation angle is canceled, but the low speed mode is canceled unless the vehicle speed exceeds the second low speed mode determination reference value. A release prohibition means to prohibit,
A motor control unit that controls a motor for driving the light distribution unit so that an irradiation axis of the light distribution unit faces an irradiation angle target position based on the setting unit and the release prohibiting unit; .
[0011]
The vehicle headlamp system according to claim 4 includes a steering wheel steering angle detector that outputs a detection signal based on an operation of the steering wheel,
A vehicle speed detector that detects the vehicle speed and outputs a detection signal;
A calculation means for receiving a detection signal from the steering wheel steering angle detection section and a detection signal from the vehicle speed detection section to calculate an irradiation angle target position of the light distribution means;
A motor control unit that controls a motor for driving the light distribution means so that an irradiation axis of the light distribution means is directed to the irradiation angle target position based on a calculation result of the calculation means;
The calculation means is based on a setting means for fixing the irradiation axis of the light distribution means to a first maximum angle when the steering angle of the steering wheel is equal to or greater than a predetermined value, and on the operation of the blinker switch. Corresponds to the turned blinker The irradiation axis of the light distribution means is set to a second maximum angle larger than the first maximum angle. Set the irradiation axis of the other light distribution means to the front And setting means.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Example 1
Embodiments of a vehicle headlamp system according to the present invention will be described below with reference to the drawings.
[0013]
FIG. 1 is a block circuit diagram of a vehicle headlamp system. In FIG. 1, 10 is a left headlamp illuminating device, 20 is a right headlamp illuminating device, 30 is a steering rudder angle detecting unit for detecting a steering angle and a steering direction of a steering wheel, 40 is a vehicle speed detecting unit for detecting a vehicle speed, 50 is a light distribution control device for controlling the light distribution of the left headlamp illumination device 10 and the right headlamp illumination device 20 based on the detection signal of the steering angle detection unit 30 and the detection signal of the vehicle speed detection unit 40, and 60 is this light distribution. A power supply circuit that supplies power to the control device 50, SW1 is an ignition switch, SW2 is a headlamp switch, SW3 is a clearance switch, SW4 is a right turn signal switch, SW5 is a left turn signal switch, and E is a battery.
[0014]
As shown in FIG. 2, the left headlamp illumination device 10 includes a bulb 11, a movable reflector 12 as a diffused light distribution means disposed behind the bulb 11, a fixed reflector 13, and a movable reflector in this example. A four-phase stepping motor 14 that rotates the left and right 12 is provided. The stepping motor 14 rotates the movable reflector 12 by 0.17 degrees every time one step is rotated. As a different headlamp illumination device, there is a type in which the fixed reflector 13 is changed to a movable type, or a type in which a lens is attached to the movable reflector 12.
[0015]
As shown in FIG. 2, the left headlamp illumination device 10 has a housing 15. A rotating shaft 16 is rotatably provided in the housing 15, and the movable reflector 12 is fixed to a lower portion of the rotating shaft 16. Yes.
[0016]
As shown in FIGS. 2 and 3, the rotating shaft 16 is provided with a helical gear 17, the output shaft 14a of the stepping motor 14 is provided with a worm gear 18, and the helical gear 17 and the worm gear 18 are engaged with each other. The rotation of the worm gear 18 is transmitted to the helical gear 17.
[0017]
A sleeve 19 that rotates integrally with the rotation shaft 16 is fixed to the rotation shaft 16, and a protrusion 19 </ b> A is integrally formed on the sleeve 19.
[0018]
The stepping motor 14 is fixed to the bracket B, and the bracket B is attached to the housing 15. A concave portion Ba is formed at the tip of the bracket B, and the rotation shaft 16, the sleeve 19, and the protrusion 19A are disposed in the concave portion Ba. Further, as shown in FIG. 4, a stopper surface Bm is formed in the recess Ba so that the projection 19 </ b> A contacts when the rotation shaft 16 rotates by a predetermined angle.
[0019]
When the projection 19A abuts against the stopper surface Bm, the movable reflector 12 is prevented from rotating toward the left outer side than the position shown in FIG. The movable reflector 12 is mechanically set so as not to rotate more than 35 degrees from the front to the left and right. Since the configuration of the right headlamp illumination device 20 is the same as that of the left headlamp illumination device, detailed description thereof is omitted. The light distribution control device 50 includes a motor control unit 51 that drives and controls the stepping motor 14, a motor control unit 52 that drives and controls the stepping motor 24, and a CPU 53 that controls the motor control units 51 and 52.
[0020]
The CPU 53 has output terminals INAl, INB1, ST1 and output terminals INAr, INBr, STr. The output terminals INAl, INBr, STl are connected to the motor control unit 51, and the output terminals INAr, INBr, STr are motor control units. 52.
[0021]
The motor control unit 51 has output terminals Φ1l, Φ2l, Φ3l, and Φ4l, and these output terminals Φ1l, Φ2l, Φ3l, and Φ4l are connected to the input terminals of the stepping motor 14, respectively. Similarly, the motor control unit 52 has output terminals Φ1r, Φ2r, Φ3r, and Φ4r, and these output terminals Φ1r, Φ2r, Φ3r, and Φ4r are connected to the input terminals of the stepping motor 24, respectively.
[0022]
As shown in FIG. 5, when the output terminal ST1 of the CPU 53 is at the H level, the pulse signal P1 is output from the output terminal INAl, and the pulse signal P2 whose phase is delayed by 90 degrees from the pulse signal P1 is output from the output terminal INB1. Is done. Thus, during the drive period T1 shown in FIG. 5, the pulse signals PS1 to PS4 are output from the output terminals Φ1l, Φ2l, Φ3l, and Φ4l of the motor control unit 51, and the stepping motor 14 is rotated clockwise.
[0023]
Conversely, when the pulse signal P2 is output first from the output terminal INBl and the pulse signal P1 whose phase is delayed by 90 degrees from the pulse signal P2 is output from the output terminal INAl, the output terminals Φ1l, Φ2l, During the drive period T2 shown in FIG. 5 from Φ3l and Φ4l, the pulse signals PS1 to PS4 are output, and the stepping motor 14 is rotated counterclockwise.
[0024]
When the stepping motor 14 rotates counterclockwise, the movable reflector 12 is rotated outward, and when the stepping motor 14 rotates clockwise, the movable reflector 12 is rotated inward.
[0025]
Similarly, when the pulse signals P1 and P2 are output from the output terminals INAr and INBr, the stepping motor 24 is rotated clockwise and counterclockwise. When the stepping motor rotates clockwise, the movable reflector 22 is rotated outward, and when the stepping motor 24 is rotated counterclockwise, the movable reflector 22 is rotated inward. Further, when the output terminals ST1 and STr of the CPU 53 become L level, the rotation of the stepping motors 14 and 24 is stopped.
[0026]
The movable speed of the movable reflector 12 is 60 degrees / sec, that is, the drive frequency of the stepping motors 14 and 24 is 350 pulse persecond (pps). In addition, the movable reflectors 12 and 22 are rotated by 0.17 degrees with respect to one step of the stepping motors 14 and 24. Although the movable reflectors 12 and 22 can be rotated in the vertical direction, the description of the drive mechanism is omitted here.
[0027]
When the ignition switch SW1 is turned on, power is turned on from the power supply circuit 60 to the light distribution control device 50, and the microcomputer 53 starts operating.
[0028]
Then, first, the interrupt process execution cycle setting circuit (S.1) of the main flowchart shown in FIG. 6 is executed. Thereby, the driving frequency 350pps of the stepping motors 14 and 24 is set, and the interrupt cycle is set to 2.8 ms.
[0029]
Next, it is determined whether or not the initialization process for adjusting the movable reflectors 12 and 22 to the center position is completed (S.2). This initialization process is performed during execution of the interrupt process every 2.8 ms shown in FIG.
[0030]
In the interrupt process shown in FIG. 7, first, it is determined whether or not the initialization is completed (S. 101). When the initialization process has been completed, S.E. When the process proceeds to 102 and the initialization process is not completed, the process proceeds to the initialization process (S.103).
[0031]
In this initialization process, as shown in FIG. In step 1031, it is determined whether or not the initialization is completed. If yes, the process proceeds to the RTE in FIG. Go to step 3 If no at 1031, S.I. Proceed to 1032.
[0032]
S. In 1032, it is determined whether or not the movable reflectors 12 and 22 are rotated until the projection 19 </ b> A of the sleeve 19 of the headlamp lighting devices 10 and 20 comes into contact with the stopper surface Bm of the bracket B. Here, the movable reflector is still here. 12 and 22 are not started to rotate. Go to 1033.
[0033]
S. In step 1033, the initialization pulse is counted, and this is read into an internal counter (not shown). 1034.
[0034]
S. In 1034, it is determined whether the count value Io of the internal counter is 420 or not. Here, the internal count value Io is set to 420 by reliably setting the count value slightly larger than when the movable reflectors 12 and 22 are rotated to the maximum from the vehicle inner position to the vehicle outer position. This is because the projection 19A is brought into contact with the reference plane Bm. Here, since the movable reflectors 12 and 22 have not yet started to be driven, the count value Io of the internal counter is “0”, and it is determined as NO. Proceed to 1035.
[0035]
S. At 1035, “+1” is added to the count value of the internal counter. 1036. S. At 1036, the stepping motor 14 is driven to rotate leftward, and the movable reflector 12 is rotated 0.17 degrees outward.
[0036]
Then S. 1037, the stepping motor 24 is driven to rotate rightward, and the movable reflector 22 is rotated 0.17 degrees outward. Then, after returning to the RTE of FIG. 3
[0037]
S. of FIG. In 3, it is determined whether or not a straight traveling position of the vehicle has been detected. S. 3, when no, S.I. Then, the process proceeds to 4 to perform a vehicle straight position detection process. For this purpose, the detection signal of the steering angle detection unit 30 is used, but since the vehicle straight position detection process is known, the description thereof is omitted. Until the straight position is detected, S.M. 3, S.M. 4 is repeated, and when 2.8 ms elapses, the process shifts again to the interrupt process shown in FIG. 7, and it is determined whether or not the initialization is completed (S.101).
[0038]
And S. If the initialization process is not completed in S101, S.I. The process proceeds to 103 and the initialization process shown in FIG. 8 is executed again. When the initialization process shown in FIG. 1031-S. 1037 is executed, the movable reflectors 12 and 22 are both moved toward the outside of the vehicle by 0.17 °, and after counting “420” pulses, the protrusion 19A should be surely in contact with the reference plane Bm. It is. Here, the “420” pulse is 71.4 ° in terms of the rotation angle of the movable reflectors 12 and 22.
[0039]
That is, since the mechanical movable range of the movable reflectors 12 and 22 is set to 35 degrees from the front to the left and right, as shown in FIG. It abuts against Bm. After the projection 19A comes into contact with the stopper surface Bm, the stepping motor 14 steps out.
[0040]
When the pulse count value Io is determined to be “420”, S.P. 1038, after the vehicle outer direction movable end setting is set, the count value Io of the internal counter is cleared, “Io = 0” is set, and after returning to the RTE of FIG. 2 or S.M. Return to 4.
[0041]
Then, when 2.8 ms elapses again, S. of FIG. 101, S.M. The initialization process of FIG. 8 is re-executed via 103. Then, S. of FIG. 1031 is determined to be no. In 1032 S.E. In 1038, the vehicle outward direction movable setting is completed, so it is determined as YES. Move to 1040. S. In 1040, the initialization end setting is executed, and then the count values I1 and I2 of the internal counter are set to “0” and “400”, respectively (S.1041), and the S in FIG. . 3 or S.M. Return to 4 again.
[0042]
Therefore, as shown in FIG. 9, the irradiation axis O1 of the movable reflector 12 is set to the left oblique direction outside 35 degrees with reference to the vehicle straight traveling direction O0, and the count pulse value I1 at that time is initialized to “0”. . Further, the irradiation axis O2 of the movable reflector 22 is set to a right oblique direction of 35 degrees with respect to the vehicle straight traveling direction O0, and the count pulse value I2 at that time is initialized to “400”.
[0043]
And S. of FIG. 3 or S.M. If 2.8 ms elapses again during execution of the process of No. 4, the process proceeds to the interrupt process of FIG. In 101, it is determined whether or not the initialization process has been completed. Here, in FIG. Since the initialization end setting process is performed in 1041, it is determined as YES, and S.P. 102.
[0044]
S. If the straight-ahead position detection is not completed in 102, S. of FIG. 3 or S.M. 4, the straight position detection process is executed, and when the straight position detection has been completed, S. 104, the current position Rn of the movable reflector 22 is read. 102, it is assumed that the vehicle straight-ahead position detection process has not been completed. It is assumed that the straight-ahead position detection process is completed immediately after returning to 4.
[0045]
S. 3, the vehicle straight-ahead position detection process is completed. Then, the process proceeds to step 5, where the steering angle, steering direction, and vehicle speed detection processing is performed, and then it is determined whether or not the headlamp switch SW2 is on (S.6). It is assumed that the headlamp switch SW2 is off, that is, the bulbs 11 and 21 are off. S. 6 is determined to be no. 7, the target pulse value Rt of the movable reflector 22 and the target pulse value Lt of the movable reflector 12 are both set to “200”. Here, the target pulse value “200” means that the irradiation axes O1 and O2 of the movable reflectors 12 and 22 are directed in the vehicle straight traveling direction O0.
[0046]
This S.I. 5-S. 7, if 2.8 ms elapses, S. of FIG. 101 is executed, but since initialization has already been completed, it is determined as NO and S.101 is completed. The process proceeds to 102 to determine whether or not the straight position detection has been completed. S. In 102, the straight-ahead position detection is also completed. 104, after reading the current position Rn of the movable reflector 22, 105. The current position Rn of the movable reflector 22 is “400” because the count value I2 of the internal counter is “400”.
[0047]
S. In 105, it is determined whether or not the current position Rn matches the target pulse value Rt. When the current position Rn and the target pulse value Rt coincide with each other, the excitation of the stepping motor 24 is turned off (S.105 ′). Jump to 112. S. 105, when the current position Rn and the target pulse value Rt are different from each other, it is determined as NO. In step 106, the stepping motor 24 is turned on. Then S. Moving to 107, it is determined whether or not the target pulse value Rt is larger than the current position Rn.
[0048]
This S.I. When the target pulse value Rt is larger than the current position Rn at 107, after the movable reflector 22 is rotated 0.17 degrees to the right (S.108), the current position Rn of the movable reflector 22 is incremented by “+1”. This is set to the current position Rn (S.109). The S. When the target pulse value Rt is smaller than the current position Rn at 107, the movable reflector 22 is rotated 0.17 degrees to the left (S.110), and the current position Rn of the movable reflector 22 is subtracted by “1”. This is set to the current position Rn (S.111). Thereby, the irradiation axis O2 of the movable reflector 22 is set in the vehicle straight traveling direction O0.
[0049]
Then, the CPU 53 performs S.I. 107-S. 109 processing or S.I. 107, S.M. 110, S.M. After executing the process 111, the current position Ln of the movable reflector 12 is read. The current position Ln of the movable reflector 12 is “0” because the counter value I1 of the internal counter is “0”.
[0050]
Next, the CPU 53 performs S.I. Moving to 113, it is determined whether or not the current position Ln of the movable reflector 12 matches the target pulse value Lt. S. 113, when the current position Ln and the target pulse value Lt coincide with each other, it is determined that the answer is YES. 113 ′, after stepping motor 12 is turned off, S.E. 114-S. 117 jump to S. of FIG. Move to 6. S. 113, when the current position Ln and the target pulse value Lt are different from each other, it is determined as NO. In step 114, the stepping motor 14 is turned on. Then S. The process proceeds to 115 to determine whether or not the target pulse value Lt is larger than the current position Ln.
[0051]
This S.I. When the target pulse value Lt is larger than the current position Ln at 115, after the movable reflector 12 is rotated 0.17 degrees to the right (S.116), the current position Ln of the movable reflector 12 is incremented by “+1”. This is set to the current position Ln (S.117). The S. When the target pulse value Lt is smaller than the current position Ln at 115, after the movable reflector 12 is rotated 0.17 degrees to the left (S.118), the current position Ln of the movable reflector 12 is decremented by “1”. This is set to the current position Rn (S.119). And S. of FIG. Move to 6. Thereby, the irradiation axis O1 of the movable reflector 12 is set in the straight traveling direction O0 of the vehicle.
[0052]
In FIG. 5-S. When the headlamp switch SW2 is turned on during the process of step S7, the S.E. 6 is judged as yes and S. 8 and it is determined whether or not the vehicle speed is a predetermined value of 30 km / h or less. When the vehicle speed is 30 km / h or less, S.I. Then, it is determined whether the right turn signal switch SW4 is turned on. S. 8 when the vehicle speed exceeds 30 km / h. The process proceeds to 8 ′, and the winker mode release flag KAIJYO is cleared and set to “0”. Thereafter, the CPU 53 performs S.I. The process proceeds to a movable angle calculation process and a target pulse value setting process for the 16 movable reflectors 12 and 22. Here, the movable angle calculation process is a process for calculating the irradiation angle target position of the irradiation axes O1 and O2 of the movable reflectors 12 and 22 according to the steering angle of the steering wheel, and the target pulse value setting process is This is a process for setting the number of pulses required for driving the movable reflectors 12 and 22 from the current angular position of the irradiation axes O1 and O2 of the movable reflectors 12 and 22 to the irradiation angle target position, and is a conventional light distribution. It corresponds to the calculation processing of the control system. The role of the blinker mode release flag KAIJYO will be described later.
[0053]
S. At 9, it is determined whether or not the right turn signal switch SW4 is on. When the right turn signal switch SW4 is on, S.M. In order to set the irradiation axis O2 of the movable reflector 22 to 20 degrees diagonally to the right, and to set the irradiation axis O1 of the movable reflector 12 to the front, the target pulse value Rt of the movable reflector 22 is set to “ 317 ”and the target pulse value Lt of the movable reflector 12 is set to“ 200 ”. S. 9 when the right turn signal switch SW4 is not turned on. 11 and it is determined whether or not the left turn signal switch SW5 is turned on. S. 11 when the left turn signal switch SW5 is on. 12, in order to set the irradiation axis O1 of the movable reflector 12 to the left oblique 20 degrees and to set the irradiation axis O2 of the movable reflector 22 to the front, the target pulse value Lt of the movable reflector 12 is set to “ 83 ”and the target pulse value Rt of the movable reflector 12 is set to“ 200 ”. S. 11 when the left turn signal switch SW5 is off. The process proceeds to 8 ′, and the winker mode release flag KAIJYO is cleared and set to “0”.
[0054]
CPU 53 is S.I. 9, S.M. 10 or S.M. 9, S.M. 11, S.M. After performing the process of S.12. Move to 13. S. In 13, it is determined whether the rudder angle is 100 degrees or less. Here, the steering angle of 100 degrees corresponds to the direction of the irradiation axis of the movable reflectors 12 and 22 being a predetermined irradiation angle (20 degrees oblique) as shown in FIG.
[0055]
S. 13, when the steering angle is 100 degrees or less, it is determined whether or not the winker mode release flag KAIJO is “1” (S.15). Return to 5. S. 15, when Jesus, 16, the movable angle calculation process of the movable reflectors 12 and 22 is executed, and the target pulse value setting process is executed. Return to 5. S. 13 when the rudder angle exceeds 100 degrees. 14 and the winker mode release flag KAIJO is set to “1”. 16 and S. 16 is executed, S.16. Return to 5.
[0056]
Here, the role of the blinker mode release flag KAIJYO will be described. The blinker mode release flag KAIJYO is used to determine whether the CPU 53 should perform the process of fixing the irradiation axes O1 and O2 of the movable reflectors 12 and 22 in a predetermined direction, or by linking the irradiation axes O1 and O2 of the movable reflectors 12 and 22 with the steering angle. This is used to determine whether or not to perform the moving process. When the turn signal mode release flag KAIJO is “0”, it means that the turn signal mode should not be released, and when the turn signal mode release flag KAIJO is “1”, it means that the turn signal mode should be released.
[0057]
Now, in the main flowchart shown in FIG. 6, if the headlamp switch SW2 is turned on, the CPU 53 performs S.I. 8 determines whether the vehicle speed is 30 km / h or less. S. 8 when the vehicle speed is 30 km / h or higher. 8 'and the winker mode release flag KAIJYO is set to “0”. Then, the movable angle calculation process and the target pulse value setting process of the reflectors 12 and 22 are performed. This S.I. 6, S.M. 8, S.M. 8 ′, S.M. Reference numeral 16 corresponds to a conventional light distribution control processing loop for setting the irradiation axes O1 and O2 of the movable reflectors 12 and 22 in conjunction with the steering angle of the steering wheel. Further, when the winker mode release flag KAIJO is set to “0”, the irradiation axes O1 and O2 of the movable reflector 22 or the movable reflector 12 are fixed when the winker switch SW4 or the winker switch SW5 is turned on. Will be done.
[0058]
That is, S.M. 8, the vehicle speed is determined to be 30 km or less. 9, when it is determined that the right turn signal switch SW4 is ON, S.E. 10, the target pulse value Rt of the movable reflector 22 is set to “317” and the target pulse value Lt of the movable reflector 12 is set in order to fix the irradiation axis O2 of the movable reflector 22 in the oblique 20 ° direction. Is set to “200” and S. 13 to determine whether or not the steering angle of the steering wheel is 100 degrees or less. Then, it is determined whether the winker mode release flag KAIJO is “1”. The winker mode release flag KAIJO is “0” immediately after turning on the winker switch Sw4. 15 is determined to be no and S.I. Returning to FIG. 5, S.M. 6, S.M. 8, S.M. 9, S.M. 10, S.M. 13, S.M. 15 processes are repeated. When 2.8 ms elapses during the series of processes, the process proceeds to the interrupt process of FIG. 102-S. The process of 119 is executed, and the movable reflector 22 is driven until the irradiation axis O2 of the movable reflector 22 is directed 20 degrees to the right, and the movable reflector 12 is moved until the irradiation axis O1 of the movable reflector 12 is directed to the front. Driven. In this way, the irradiation axis O2 of the movable reflector 22 is fixed at an angle of 20 degrees to the right, and the irradiation axis O1 of the movable reflector 12 is fixed to the front. That is, the irradiation axes O1 and O2 are set as shown in FIG.
[0059]
When the left turn signal switch SW5 is turned on instead of the right turn signal switch SW4, S.E. 11, S.M. 12, S.M. 13, S.M. 15 is performed, the irradiation axis O1 of the movable reflector 12 is fixed to the left oblique 20 degrees, and the irradiation axis O2 of the movable reflector 22 is fixed to the front. Even when the vehicle speed is 30 km / h or less, when both the right turn signal switch SW4 and the left turn signal switch SW5 are off, the turn signal mode release flag KAIJO is cleared and then the S.E. Then, the conventional light distribution control is performed.
[0060]
S. 8-S. 10 or S.M. 8, S.M. 9, S.M. 11, S.M. When the steering angle of the steering wheel exceeds 100 degrees during the process of No. 12, the S.E. 13 is determined to be no, S.P. 14, after the winker mode release flag KAIJO is set to “1”, the conventional light distribution control is performed (S.16).
[0061]
And S. Returning to FIG. 8-S. 10 treatments or S.I. 8, S.M. 9, S.M. 11, S.M. 12 after processing. When it is determined that the steering angle of the steering wheel is 100 degrees or less when the process proceeds to S.13. Then, it is determined whether the winker mode release flag KAIJO is “1”. S. 15, the winker mode release flag KAIJO is set to “1”. 15, it is determined as YES, and the fixing of the irradiation axes O1 and O2 of the movable reflectors 12 and 22 is released, and normal light distribution control is performed.
[0062]
Therefore, S. 9, S.M. 10, S.M. 13, S.M. 14, S.M. After passing through the loop 16, the right turn signal switch SW4 is turned on, and once the irradiation axis O2 of the movable reflector 22 is fixed to 20 degrees diagonally to the right and the irradiation axis O1 of the movable reflector 12 is fixed to the front, the steering of the steering wheel When the angle exceeds 100 degrees in the clockwise direction, the fixing of the irradiation axis O2 of the movable reflector 22 is released, and light distribution control is performed in conjunction with the operation of the handle when the steering angle of the handle is 100 degrees or more. . S. 9, S.M. 11, S.M. 12, S.M. 13, S.M. 14, S.M. After passing through the loop 16, the left turn signal switch S5 is turned on, and once the irradiation axis O1 of the movable reflector 12 is fixed to 20 degrees diagonally to the left and the irradiation axis O2 of the movable reflector 22 is fixed to the front, the steering of the steering wheel When the angle exceeds 100 degrees in the counterclockwise direction, the fixing of the irradiation axis O1 of the movable reflector 12 is released, and light distribution control is performed in conjunction with the operation of the handle when the steering angle of the handle is 100 degrees or more. .
[0063]
Further, even if the turn signal switches SW4 and SW5 are kept on, the turn signal mode release flag KAIJO becomes “1”. Once the steering angle of the steering wheel exceeds 100 degrees, light distribution control linked to the operation of the steering wheel is performed even when the steering angle of the steering wheel subsequently becomes 100 degrees or less.
[0064]
Therefore, in the first embodiment, when any one of the turn signal switches SW4 and SW5 is turned on before the vehicle has completely turned the intersection, the irradiation axis of the movable reflector corresponding to the turned-on switch is fixed to 20 degrees obliquely. After the other irradiation axis is fixed to the front, the light distribution control according to the steering of the steering wheel is performed even when the turn signal switches SW4 and SW5 remain turned on when the intersection is completely turned.
[0065]
11 shows a modification of the main flowchart shown in FIG. 1-S. 9 is the same as the process of the main flow of FIG. 13-S. 16 is the same as the main flow of FIG. 8 to S.M. The process up to 13 is modified.
[0066]
Here, S.M. 9 when the right turn signal switch SW4 is determined to be on or 10, after the left turn signal switch SW5 is determined to be on, after setting the irradiation axis O2 of the movable reflector 22 to 20 degrees diagonally to the right (target pulse value Rt is “317”) (S.10 ′ ), The irradiation axis O1 of the movable reflector 12 is set to 20 degrees diagonally to the left (the target pulse value Lt is “83”). Move to 13.
[0067]
In this modification, regardless of whether the right turn signal switch SW4 or the left turn signal switch SW5 is operated, the irradiation axis O1 of the movable reflector 12 is fixed to 20 degrees diagonally to the left and the irradiation axis O2 of the movable reflector 22 is fixed to 20 degrees diagonally to the right. Is done.
(Example 2)
FIG. 12 shows a main flowchart of Embodiment 2 of the vehicle headlamp system according to the present invention.
[0068]
In FIG. 20-S. Up to the process of 24, S. of FIG. 1-S. 5 processing is supported.
[0069]
When the CPU 53 completes the detection processing of the straight-ahead position (S.22), the CPU 53 executes the detection processing of the steering angle, the steering direction, and the vehicle speed (S.24), and determines whether or not the clearance switch SW3 is turned on. (S.25). This is because if the clearance switch SW3 is turned on, the headlamp may be turned on thereafter.
[0070]
When the clearance switch SW3 is OFF, S.I. Then, the target pulse value Rt of the movable reflector 22 and the target pulse value Lt of the movable reflector 12 are both set to 200.
[0071]
When the clearance switch SW3 is on, it is determined whether or not the vehicle speed is 30 km / h or less (S.27). 28, it is determined whether or not the right turn signal switch SW4 is on. When the vehicle speed is 30 km / h or higher, the S.E. Then, the process goes to 27 'and the winker mode release flag KAIJO is cleared and set to "0".
[0072]
S. After execution of the process 27 ', it is determined whether or not the headlamp switch SW2 is on (S.38). Returning to 26, the target pulse value Rt of the movable reflector 22 and the target pulse value Lt of the movable reflector 12 are both set to “200”. S. 38, when the headlamp switch SW2 is on, the S.E. The process proceeds to 35, and the process proceeds to a movable angle calculation process and a target pulse value setting process for the movable reflectors 12 and 22.
[0073]
S. 28, when the right turn signal switch SW4 is off, it is determined whether or not the left turn signal switch SW5 is on (S.30). 27 ', the winker mode release flag KAIJO is cleared and set to "0". 38, S.M. 26 processing or S.P. 38, S.M. The process proceeds to 35.
[0074]
S. In 28, when the right turn signal switch SW4 is ON, the movable reflector 22 is set to set the irradiation axis O2 of the movable reflector 22 to the right diagonal 20 degrees and to set the irradiation axis O1 of the movable reflector 12 to the front. Is set to “317”, and the target pulse value Lt of the movable reflector 12 is set to “200” (S. 29).
[0075]
S. 30 when the left turn signal switch SW5 is ON. In order to shift to 31 and set the irradiation axis O1 of the movable reflector 12 to the left diagonal 20 degrees and to set the irradiation axis O2 of the movable reflector 22 to the front, the target pulse value Lt of the movable reflector 12 is set to “ 83 ”and the target pulse value Rt of the movable reflector 22 is set to“ 200 ”.
[0076]
CPU 53 is S.I. 29 treatment or S.E. After executing the process of S.31, S.E. It shifts to 32 and it is judged whether a rudder angle is 100 degrees or less.
[0077]
S. In 29, when the steering angle is 100 degrees or less, it is determined whether or not the winker mode release flag KAIJO is “1” (S.32). When the rudder angle exceeds 100 degrees, S.I. 33, the winker mode release flag KAIJO is set to “1”, The process proceeds to 35, and the process proceeds to a movable angle calculation process and a target pulse value setting process for the movable reflectors 12 and 22. S. 32, when the rudder angle is 100 degrees or less, 34, it is determined whether or not the winker mode release flag KAIJO is “1”. Returning to S.24, S.M. The process after 25 is continued. S. 34. If yes then S. 35, the movable angle calculation process and the target pulse value setting process of the movable reflectors 12 and 22 are executed. Returning to FIG. The process after 25 is continued.
[0078]
In the second embodiment, when the clearance switch SW3 is turned on and the vehicle speed is 30 km or more, the turn signal mode release flag KAIJO is set to “0” in advance regardless of whether the headlamp switch SW2 is turned on or off. When the left turn signal switch SW5 is turned on, the process of setting the movable reflector 22 to the right diagonal 20 degrees (S.29) or the process of setting the left diagonal 20 degrees (S.31) is executed. .
[0079]
That is, in the second embodiment, when the clearance switch SW3 is turned on (S.25) and the vehicle speed is 30 Km / h or more (S.27), the winker mode release flag clear KAIJO is set unless the headlamp switch SW2 is turned on. Set to “0” (S.27 ′) 38, S.M. 26, S.M. 24 and subsequent loops are repeated, and when the headlamp switch SW2 is turned on, S.E. 38, S.M. Via S.35. Thus, the conventional light distribution control according to the steering angle is performed when the vehicle speed is 30 km / h or higher. Even when the vehicle speed is 30 km / h or less and the right turn signal switch SW4 and the left turn signal switch SW5 are off (via the route of S.27, S.28, S.30, S.38, S.35) Similar light distribution control is performed.
[0080]
When the right turn signal switch SW4 or the left turn signal switch SW5 is turned on, the irradiation axis O2 of the movable reflector 22 is fixed to 20 degrees diagonally to the right or the irradiation axis O1 of the movable reflector 12 is fixed to 20 degrees diagonally to the left (S.28). , S.29 route or S.30, S.31 route).
[0081]
When the rudder angle is 100 degrees or less, S.I. 32, S.M. Via route 34. Returning to FIG. Since the process after 24 is continued, unless the rudder angle exceeds 100 degrees, the state where the irradiation axes O1 and O2 of the movable reflectors 12 and 22 are fixed is maintained.
[0082]
Next, when the steering angle of the steering wheel exceeds 100 degrees, the blinker mode release flag KAIJO is set to “1”, the movable angle calculation process and the target pulse value setting process are performed, and the conventional steering angle corresponding to the steering angle of the steering wheel is set. Light distribution control is performed (routes S.32, S.33, and S.35). Return to 24.
[0083]
After that, when the steering angle of the steering wheel becomes 100 degrees or less, the winker mode release flag KAIJO is set to “1”. Therefore, even if the steering angle of the steering wheel is 100 degrees or less, the movable angle calculation process and the target pulse value setting process are performed. The conventional light distribution control is performed (routes S.32, S.34, and S.35). Therefore, the light distribution control according to the steering of the steering wheel is performed even when the turn signal switches SW4 and SW5 are turned on.
[0084]
According to the second embodiment, when the clearance switch SW3 is on, the irradiation speed of the movable reflectors 12 and 22 when the vehicle speed is equal to or lower than the predetermined speed and the winker switch SW4 or SW5 is on, even when the headlamp switch SW2 is off. Is fixed at 20 degrees to the left or 20 degrees to the right. Even if the turn signal switch SW3 is turned on at an intersection or the like and the headlamp switch SW2 is turned on from a temporarily stopped state, the movable reflectors 12, 22 are already turned on. Since the irradiation axis is fixed at 20 degrees to the left or 20 degrees to the right, the front of the turning direction around the intersection is illuminated before the start of traveling, and the movable reflectors 12 and 22 immediately after the headlamp switch SW2 is turned on. Can be prevented from moving, and driver discomfort can be eliminated. After fully bend, the steering angle of the steering wheel is fixed in the irradiation axis of the movable reflector in conjunction with more than the the steering a predetermined angle is canceled.
[0085]
FIG. 13 shows a modification of the main flowchart of FIG. 20-S. The process of FIG. 27 is the same as the process of the main flow of FIG. 32-S. 38 is the same as the main flow in FIG. 28 to S.M. The process up to 32 is modified.
[0086]
Here, S.M. 28 when the right turn signal switch SW4 is determined to be on or S.E. In any case when the left turn signal switch SW5 is determined to be on at 30, the irradiation axis O2 of the movable reflector 22 is set to 20 degrees diagonally to the right (target value Rt is 317) (S. 29 ') and then movable. The irradiation axis O1 of the reflector 12 is set to 20 degrees diagonally to the left (target value Lt is 83) (S.30 '). 32.
[0087]
In this modification, regardless of whether the right turn signal switch SW4 or the left turn signal switch SW5 is operated, the irradiation axis O1 of the movable reflector 12 is fixed to 20 degrees diagonally to the left and the irradiation axis O2 of the movable reflector 22 is fixed to 20 degrees diagonally to the right. Is done.
(Example 3)
FIG. 14 shows a main flowchart of the third embodiment. S. of the main flow chart of FIG. The processing of 40 to S43 is the same as that of FIG. 1-S. This is the same as the processing of 4.
[0088]
Here, S.M. In 44, the CPU 53 calculates a steering angle and a steering direction after detecting the straight-ahead position of the vehicle. Next, it is determined whether or not the headlamp switch SW2 is turned on (S.45). When the headlamp switch SW2 is off, S.M. 46, the target pulse values Rt and Lt of the movable reflectors 22 and 12 are both set to “200”, and then the S.E. Return to 44.
[0089]
When the headlamp switch SW2 is on, it is determined whether or not the low-speed mode is set (S.45). The determination as to whether or not the vehicle is in the low speed mode is made according to the vehicle speed interruption process flow shown in FIG.
[0090]
This interrupt processing cycle is executed in the interrupt processing execution cycle setting processing (S.40 in FIG. 14). The interrupt process is executed every predetermined millisecond while the main flow is being executed.
[0091]
When entering the vehicle speed interruption process flow, the CPU 53 reads the vehicle speed (S.201), determines whether or not the previous low speed mode was selected (S.202), and when the previous low speed mode was selected, the vehicle speed is the second low speed. It is determined whether or not the mode determination reference value is 40 Km / h or more (S.203), and it is determined whether or not the vehicle speed is the first low speed mode determination reference value 30 Km / h or less when the previous low speed mode was set. (S.204), S.E. When the vehicle speed is 40 km / h or higher at 203, the low speed mode is canceled (S.205), and the process returns to the main flow of FIG. Step 205 is skipped and the process returns to the main flow.
[0092]
S. In 204, when the vehicle speed is 30 km / h or less, low speed mode setting processing is performed (S.206), and the process returns to the main flow of FIG. Skip 206 and return to the main flow.
[0093]
Here, S. of the main flow. In 47, it is determined that the low-speed mode is not set. Then, the CPU 53 performs S.I. 47 'and the winker mode release flag KAIJO is cleared. 55, and after executing the movable angle calculation process and the target pulse value light distribution control process, S.E. Return to 44.
[0094]
S. of the main flow. If it is determined at 47 that the low-speed mode is selected, it is determined whether or not the right turn signal switch SW4 is ON (S.48). When the right turn signal switch SW4 is off, it is determined whether or not the left turn signal switch SW5 is on (S.50). When both turn signal switches SW4 and SW5 are off, the turn signal mode release flag KAIJO is cleared. 55, and after executing the movable angle calculation process and the target pulse value light distribution control process, S.E. Return to 44.
[0095]
S. If the right turn signal switch SW4 is ON at 48, the target pulse value Rt of the movable reflector 22 is set to “317” and the target pulse value Lt of the movable reflector 12 is set to “200” (S). 49). S. 50, if the left turn signal switch SW5 is on, the target pulse value Lt of the movable reflector 12 is set to “83” and the target pulse value Rt of the movable reflector 22 is set to “200” (S. 51).
[0096]
After executing these processes, the CPU 53 determines whether or not the steering angle is 100 degrees or less (S.52). When the steering angle is 100 degrees or less, whether or not the turn signal mode release flag KAIJO is “1”. Is determined (S.54). When the winker mode release flag KAIJO is not “1”, the S.I. Returning to FIG. The processing after 44 is continued. Therefore, the vehicle travels while the irradiation axes O1 and O2 of the movable reflector 12 or 22 are fixed.
[0097]
S. 52, when the steering angle exceeds 100 degrees, the turn signal mode release flag KAIJO is set to “1” (S.53). 55, the movable angle calculation process and the target pulse value setting process are performed. Return to 44. Therefore, when the rudder angle exceeds 100 degrees, the process shifts to normal light distribution control.
[0098]
S. 44 to S.M. During execution of the process 55, the steering angle becomes 100 degrees or less. 52, if it is determined that the rudder angle is 100 degrees or less, S.E. 54, it is determined that the blinker mode release flag KAIJO is “1”. The process proceeds to 55, where the movable angle calculation process and the target pulse value setting process are performed, and the normal light distribution control is performed.
[0099]
Therefore, in the third embodiment, the second low-speed mode determination reference value in which the headlamp switch SW2 is on, the vehicle speed is equal to or higher than the first low-speed mode determination reference value 30 Km / h, and the vehicle speed is larger than the first low-speed mode determination reference value. When the steering speed exceeds 40 Km / h, the low speed mode is maintained, and when the steering angle of the steering wheel exceeds the steering angle corresponding to the predetermined irradiation angle, the setting of the predetermined irradiation angle is canceled, but the vehicle speed is the second low speed mode determination reference value 40 Km / Cancellation of the low speed mode is prohibited unless h is exceeded, so when the vehicle is traveling at low speed and the headlamp is on and the turn signal switch is on, the movable reflector is frequently between the front and the diagonal 20 degrees. Therefore, it is possible to prevent the driver from feeling uncomfortable due to the movement of the movable reflector while the vehicle is traveling straight ahead at a low speed.
[0100]
FIG. 16 shows a modification of the main flow shown in FIG. Here, S.M. 48, when it is determined that the right turn signal switch SW4 is ON or 50, when the left turn signal switch SW5 is determined to be on, the irradiation axis O2 of the movable reflector 22 is set to 20 degrees diagonally to the right (the target pulse value Rt is “317”) (S. 49 ′ ), The irradiation axis O1 of the movable reflector 12 is set to 20 degrees diagonally to the left (the target pulse value Lt is “83”) (S.50 ′). 52.
[0101]
In this modification, regardless of whether the right turn signal switch SW4 or the left turn signal switch SW5 is operated, the irradiation axis O1 of the movable reflector 12 is fixed to 20 degrees diagonally to the left and the irradiation axis O2 of the movable reflector 22 is fixed to 20 degrees diagonally to the right. Is done.
[0102]
[Example 4]
The fourth embodiment is intended to improve visibility during turn-on of the winker. A vehicle headlamp system according to the fourth embodiment will be described with reference to FIGS. 19 to 14.
[0103]
When the ignition switch SW1 shown in FIG. 1 is turned on, power is turned on from the power supply circuit 60 to the light distribution control device 50, and the microcomputer 53 starts operating.
[0104]
Then, the interrupt process execution cycle setting circuit (S. 61) of the main flowchart shown in FIG. 19 is executed. Thereby, the driving frequency 350pps of the stepping motors 14 and 24 is set, and the interrupt cycle is set to 2.8 ms.
[0105]
Next, an initialization process for adjusting the movable reflectors 12 and 22 to the center position is executed (see FIG. 7). Next, it is determined whether or not the initialization process has been completed (S.62), and after the initialization process has been completed, it is determined whether or not a straight-ahead position of the vehicle has been detected (S.63). When the detection of the straight-ahead position has not been completed, S.I. 64, the straight position detection process is executed. Returning to 63, it is determined again whether or not the straight position of the vehicle has been detected.
[0106]
When the detection of the straight-ahead position of the vehicle is completed, S.E. The process proceeds to 65 to determine the steering angle, the steering direction, and the vehicle speed. Then, the microcomputer 53 determines whether or not the headlamp switch SW2 is on (S.66). When the headlamp switch SW2 is off, the left and right diffusion reflex target pulse setting process Rt = 200 and Lt = 200 are set (S.67), and the irradiation axis of the movable reflectors 12 and 22 is set to the front of the vehicle. When the headlamp switch SW2 is OFF, S.I. 65-S. The process 67 is repeated. Therefore, at a steering angle of 40 degrees or less, the irradiation axis of the light distribution means is fixed to the front.
[0107]
S. 65-S. When the headlamp switch SW2 is turned on during the processing of No. 67, S.E. The process proceeds to 68 to determine whether the vehicle speed is 30 km / h or less. When the vehicle speed exceeds 30 km / h, Moving to 69, it is determined whether the rudder angle is 40 ° or more. When the rudder angle is 40 degrees or less, S.I. Then, the microcomputer 53 performs a setting process of left and right diffusion reflex front drive pulse processing Lt = 200 and Rt = 200. Then S. Returning to S. 65-S. The process of 70 is repeated. S. 69, when the rudder angle is 40 degrees or more, S.E. It transfers to 71 and it is judged whether a rudder angle is 100 degrees or less. When the steering angle is 100 degrees or more, the right diffusion reflex target pulse setting process Lt = 83 and the left diffusion reflex target pulse setting process Rt = 317 are set (S.72). The process proceeds to 65 and this process is repeated. Therefore, when the rudder angle is 100 degrees or more, the light distribution means is set to the first maximum angle of 20 degrees, that is, the irradiation axis of the light distribution means is fixed at 20 degrees to the right and 20 degrees to the left with respect to the front of the vehicle. Is done.
[0108]
When the steering angle of the steering wheel is 40 degrees or more and 100 degrees or less, S.E. 73, after performing the ref movable angle calculation process and the target pulse value setting process, Returning to 65, this process is repeated. Therefore, when the steering angle of the steering wheel is 40 degrees or more and 100 degrees or less, the angle of the irradiation axis of the right diffusion reflex and the angle of the irradiation axis of the left diffusion reflex are changed in proportion to the steering angle of the steering wheel. .
[0109]
When the vehicle speed is 30 km / h or less, it is determined whether or not the right turn signal switch SW4 is on (S.74). When the right turn signal switch SW4 is on, S.M. 75, the setting process of Rt = 376 and Lt = 200 is performed to set the irradiation axis of the right diffusion reflex to 30 degrees and the irradiation axis of the left diffusion reflex to the front. Return to 65. Then, this process is repeated. Therefore, when the vehicle speed is 30 km or less and the right turn signal switch SW4 is on, the irradiation axis of the right light distribution means is set to the second maximum angle 30 degrees to the right regardless of the steering angle of the steering wheel. When the right turn signal switch SW4 is off, it is determined whether the left turn signal switch SW5 is turned on (S.76). When the left turn signal switch SW5 is turned on, the irradiation axis of the left diffusion reflex is 30 degrees left and the right diffusion reflex In order to set the irradiation axis of the front side to the front side, the setting process of Lt = 24 and Rt = 200 is performed (S.77). Returning to 65, this process is repeated. Therefore, when the vehicle speed is 30 km / h or less and the left turn signal switch SW5 is on, the irradiation axis of the left light distribution means is fixed at the second maximum angle 30 degrees to the left regardless of the steering angle of the steering wheel.
[0110]
When the vehicle speed is 30 km / h or less and the right turn signal switch SW4 and the left turn signal switch SW5 are also off, S.E. 69, S.M. 71, S.M. 72 or S.I. 69, S.M. 71, S.M. The process 73 is repeated. Therefore, when the winker switches SW4 and SW5 are off, the characteristic Q1 shown in FIG. 20 is drawn according to the steering angle and steering direction of the steering wheel. When the winker switches SW4 and SW5 are on, the characteristic Q2 shown in FIG. I will draw.
[0111]
Accordingly, in the first embodiment, as shown in FIG. 22, for example, when the right turn signal switch SW4 is turned on, the irradiation axis of the right light distribution means is fixed to the first maximum angle 20 degrees to the right with respect to the front of the vehicle. In this embodiment, as shown in FIG. 23, for example, when the right turn signal switch SW4 is turned on, the right light distribution means The irradiation axis is fixed to the right of the second maximum angle of 30 degrees with respect to the front of the vehicle, and illumination for a pedestrian who starts to cross at the intersection is ensured.
[0112]
In this embodiment, the irradiation axis of the left and right light distribution means at the steering angle center of the steering wheel is set to the front of the vehicle. However, as shown in FIG. The irradiation axis of the left light distribution means can be set to 5 degrees diagonally to the left with respect to the front of the vehicle. In this case, S67, S. of FIG. In the processing of 70, the target pulse value of the right diffusion reflex may be set to Rt = 230 pulses, and the target pulse value of the left diffusion reflex may be set to Lt = 170 pulses.
[0113]
[Other examples of light distribution means]
In the above embodiment, a part of the headlamps 2 and 3 is constituted by the movable reflector, but the lamp unit 60 shown in FIGS. 24 and 25 may be incorporated in the headlamps 2 and 3.
[0114]
The lamp unit 70 has a base portion 71 and a movable unit portion 72. The base portion 71 is provided with mounting portions 71A and 71B and a motor 73. The base portion 71 is fixed inside the lamp housings of the headlamps 2 and 3.
[0115]
The movable unit 72 is provided with a housing 74, and a fixed reflector (not shown) and a valve (not shown) are provided in the housing 74. The motor 73 is provided with an output shaft 75, and the movable unit 72 is moved in the horizontal direction about the rotation shaft 76 as a support shaft as shown in FIG. In FIGS. 24 and 25, reference numeral 77 denotes a socket portion, and 78 denotes a lens portion. The motor 73 can be a stepping motor, and is not limited to a stepping motor.
[0116]
【The invention's effect】
Since the invention described in claim 1 is configured as described above, there is an effect that it is possible to improve the visibility in the straight traveling direction immediately after starting to return the handle to the straight traveling direction while the blinker is turned on.
[0117]
Since the invention described in claim 2 is configured as described above, the movable reflector can be prevented from moving immediately after the headlamp switch is turned on, the driver's discomfort can be eliminated, and the steering angle of the steering wheel can be reduced. When the angle exceeds a predetermined angle, the irradiation axis of the movable reflector is released in conjunction with the steering, so that it is possible to improve the visibility in the straight direction immediately after starting to return the handle to the straight direction while the turn signal is on. There is also an effect that can be done.
[0118]
Since the invention described in claim 3 is configured as described above, when the vehicle is traveling straight ahead at a low speed, the headlamp is on, and the turn signal switch is on, the movable reflector is 20 degrees oblique to the front. It is possible to prevent the driver from feeling uncomfortable due to the movement of the movable reflector while the vehicle is traveling straight ahead at a low speed.
[0119]
Since the invention described in claim 4 is configured as described above, it is possible to improve the visibility of a pedestrian who starts to cross the intersection when entering the intersection by entering a winker.
[Brief description of the drawings]
FIG. 1 is a block circuit diagram showing an example of a headlamp control circuit according to an embodiment of the present invention.
FIG. 2 is a side view showing the structure of the movable reflector according to the embodiment of the present invention.
FIG. 3 is a plan view showing a structure of a movable reflector according to the embodiment of the present invention.
FIG. 4 is a side view showing an example of the movable state of the movable reflector according to the embodiment of the present invention, and shows a state in which the irradiation axis is directed obliquely at 35 degrees.
FIG. 5 is an explanatory diagram of pulses applied to the stepping motor for driving the movable reflector according to the embodiment of the present invention.
FIG. 6 is an explanatory diagram of a main flowchart according to the first embodiment of the invention.
FIG. 7 is an explanatory diagram of a flowchart of interrupt processing according to the embodiment of the present invention.
FIG. 8 is an explanatory diagram showing an example of initialization processing according to the embodiment of the present invention.
9 is a schematic diagram showing the direction of the irradiation axis of the movable reflector immediately after the initialization process shown in FIG.
10 is a schematic diagram showing a fixed direction of the irradiation axis of the movable reflector when the right turn signal switch according to the first embodiment is turned on. FIG.
FIG. 11 is an explanatory diagram showing a modification of the main flowchart of the first embodiment of the present invention.
FIG. 12 is an explanatory diagram of a main flowchart according to the second embodiment of the present invention.
FIG. 13 is an explanatory diagram of a main flowchart according to the second embodiment of the present invention.
FIG. 14 is an explanatory diagram of a main flowchart according to the third embodiment of the present invention.
FIG. 15 is an explanatory diagram of a flowchart of a vehicle speed interruption process according to the third embodiment of the present invention.
FIG. 16 is an explanatory diagram of a modification of the main flowchart according to the third embodiment of the present invention.
FIG. 17 is an explanatory diagram of a headlamp provided at the front of the vehicle.
FIG. 18 is an explanatory diagram showing the relationship between the steering angle of the steering wheel and the irradiation axis of the movable reflector.
FIG. 19 is an explanatory diagram of a main flowchart according to the fourth embodiment of the present invention.
FIG. 20 is an explanatory diagram showing an example of the relationship between the steering angle and the irradiation axis of the light distribution means according to the fourth embodiment of the present invention.
FIG. 21 is an explanatory diagram showing another example of the relationship between the steering angle and the irradiation axis of the light distribution means according to the fourth embodiment of the present invention.
FIG. 22 is an explanatory diagram of an illumination state by the light distribution means when the processing of the first embodiment is performed when the right turn signal switch is turned on.
FIG. 23 is an explanatory diagram of the illumination state by the light distribution means when the processing of the fourth embodiment is performed when the right turn signal switch is turned on.
FIG. 24 is a perspective view showing another example of the light distribution means.
25 is a plan view of the light distribution means shown in FIG. 24. FIG.
[Explanation of symbols]
12, 22 ... Movable reflector
14, 24 ... Stepping motor
30: Steering wheel angle detector
40 ... Vehicle speed detector
51, 52 ... Motor control unit
53 ... CPU (setting means, releasing means)
SW2 ... Headlamp switch
SW4, SW5 ... Blinker switch

Claims (4)

In the vehicle headlamp system in which the light distribution means for illuminating the front in the vehicle traveling direction is provided on the front surface of the vehicle and at intervals in the vehicle width direction,
A steering angle detector that outputs a detection signal based on the operation of the steering wheel;
A vehicle speed detector that detects the vehicle speed and outputs a detection signal;
A detection signal from the steering wheel steering angle detection unit and a detection signal from the vehicle speed detection unit are input to calculate an irradiation angle target position of the light distribution means, a headlamp switch is on, and the vehicle speed is a predetermined value or less. And setting means for setting the irradiation angle target position of the light distribution means corresponding to the turn signal turned on only at the time of turn signal operation to a predetermined irradiation angle and setting the irradiation axis of the other light distribution means to the front ,
Below the steering angle when the headlamp switch is is a and the vehicle speed on exceeding the steering angle steering angle corresponding to the predetermined irradiation angle of once the handle even when even only below a predetermined value the turn signal switch is on Release means for canceling the setting of the predetermined irradiation angle so that the irradiation axis control linked to the handle operation is performed even when
A motor control unit that controls a motor for driving the light distribution unit so that an irradiation axis of the light distribution unit is directed to the irradiation angle target position based on the setting unit and the release unit; Vehicle headlamp system. In the vehicle headlamp system in which the light distribution means for illuminating the front in the vehicle traveling direction is provided on the front surface of the vehicle and at intervals in the vehicle width direction,
A steering angle detector that outputs a detection signal based on the operation of the steering wheel;
A vehicle speed detector that detects the vehicle speed and outputs a detection signal;
A detection signal from the steering wheel steering angle detection unit and a detection signal from the vehicle speed detection unit are input to calculate an irradiation angle target position of the light distribution means, a clearance switch is on, and the vehicle speed is less than a predetermined value. When the blinker is operated, the irradiation angle target position of the light distribution means corresponding to the turned blinker is set to a predetermined irradiation angle regardless of whether the headlamp switch is on or off, and the irradiation axis of the other light distribution means is set to the front. Setting means to set to,
Even when the clearance switch is on and the vehicle speed is equal to or less than a predetermined value and the turn signal switch is on, once the steering angle of the steering wheel exceeds the steering angle corresponding to the predetermined irradiation angle, the steering angle becomes equal to or less than the steering angle. Release means for releasing the setting of the predetermined irradiation angle so that the irradiation axis control linked to the handle operation is performed even when
And a motor control unit that controls a motor for driving the light distribution means so that an irradiation axis of the light distribution means faces an irradiation angle target position based on the setting means and the release means. Headlamp system. In the vehicle headlamp system in which the light distribution means for illuminating the front in the vehicle traveling direction is provided on the front surface of the vehicle and at intervals in the vehicle width direction,
A steering angle detector that outputs a detection signal based on the operation of the steering wheel;
A vehicle speed detector that detects the vehicle speed and outputs a detection signal;
A detection signal from the steering wheel steering angle detector and a detection signal from the vehicle speed detector are input to calculate an irradiation angle target position of the light distribution means, the headlamp switch is on, and the vehicle speed is the first. When the low speed mode determination reference value or less is set, the low speed mode is set, and the irradiation angle target position of the light distribution means corresponding to the turn signal turned on at the time of the winker operation is set to a predetermined irradiation angle. Setting means for setting the irradiation axis of the light distribution means to the front ,
The low-speed mode is maintained when the headlamp switch is on and the vehicle speed is equal to or higher than the first low-speed mode determination reference value and the vehicle speed is equal to or lower than a second low-speed mode determination reference value greater than the first low-speed mode determination reference value. When the steering angle of the steering wheel exceeds the steering angle corresponding to the predetermined irradiation angle, the setting of the predetermined irradiation angle is canceled, but the low speed mode is canceled unless the vehicle speed exceeds the second low speed mode determination reference value. A release prohibition means to prohibit,
A motor control unit that controls a motor for driving the light distribution unit so that an irradiation axis of the light distribution unit faces an irradiation angle target position based on the setting unit and the release prohibiting unit; Vehicle headlamp system. In the vehicle headlamp system in which the light distribution means for illuminating the front in the vehicle traveling direction is provided on the front surface of the vehicle and at intervals in the vehicle width direction,
A steering angle detector that outputs a detection signal based on the operation of the steering wheel;
A vehicle speed detector that detects the vehicle speed and outputs a detection signal;
A calculation means for receiving a detection signal from the steering wheel steering angle detection section and a detection signal from the vehicle speed detection section to calculate an irradiation angle target position of the light distribution means;
A motor control unit that controls a motor for driving the light distribution means so that an irradiation axis of the light distribution means is directed to the irradiation angle target position based on a calculation result of the calculation means;
The calculation means includes a setting means for fixing a steering angle of the steering wheel at a predetermined value or more and fixing an irradiation axis of the light distribution means at a first maximum angle, and the light distribution corresponding to the turn signal turned on based on an operation of the turn signal switch. And a setting means for setting the irradiation axis of the other light distribution means to the front, and setting the irradiation axis of the means to a second maximum angle larger than the first maximum angle. system.

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