JP5399884B2 - Turn signal lighting control device - Google Patents

Description

  The present invention relates to turn signal lighting control of a vehicle, and more particularly to a turn signal lighting control device that automatically turns off a turn signal that is lit.

  The vehicle is provided with a turn signal indicating the direction of turning left or right or changing the course. The turn signal lighting control device controls turning on and off of the turn signal according to the operation of the turn lever provided near the steering of the driver's seat. The turn signal lighting control device performs control to turn off the turn signal at an appropriate timing when the vehicle turns right or left or changes lanes. For example, the turn signal lighting control device described in Patent Literature 1 determines whether or not a turn-off condition is satisfied based on a detection result of a steering angle sensor that detects a steering angle amount of steering. The turn signal lighting control device turns off the turn signal when it is determined that the turn-off condition is satisfied.

First, a determination method related to automatic turn-off of the turn signal at the time of turning left or right will be described.
In the case of turning right, the steering is turned clockwise from the neutral position and then returned counterclockwise. Therefore, at the time of a right turn, as shown in FIG. 7, the steering angle θ detected through the steering angle sensor changes in a sine wave shape for a half period. With reference to the neutral position of the steering, a cancel preparation angle θ1 and a cancel angle θ2 that is smaller than the cancel preparation angle θ1 are set. For example, in the case of a right turn, when the steering is turned clockwise and the steering angle θ reaches the cancel preparation angle θ1, the steering is turned counterclockwise and becomes less than the cancel angle θ2, so that the right turn It is determined that the extinguishing condition is satisfied. Then, the turn signal is turned off. Similarly, when turning left, the steering is turned counterclockwise and the steering angle θ reaches the cancel preparation angle θ1, and then turned counterclockwise and turned off when the steering angle θ becomes equal to or less than the cancel angle θ2. .

Next, a determination method related to automatic turn-off of the turn signal when changing lanes will be described.
When changing to the right lane, the steering is turned counterclockwise after the steering is turned clockwise from the neutral position. Therefore, as shown in FIG. 8, the steering angle θ detected through the steering angle sensor changes in a sinusoidal shape for one cycle. Here, as compared with the case of the right turn described above, an additional steering operation is required for a half cycle before the lane change is completed. By this half-cycle operation, the vehicle is returned to the course direction before the lane change.

  Therefore, in the lane change, the steering angle θ is detected as the first peak P1 associated with the turning operation of the steering and the second peak P2 associated with the returning operation. Both peaks P1, P2 are determined on condition that, for example, the slope of the waveform is zero, that is, the increase / decrease of the steering angle θ is zero. When both peaks P1 and P2 are detected, it is determined that the turn-off condition related to the lane change is satisfied, and the turn signal is turned off. When changing to the left lane, the turn signal is turned off when both peaks P1 and P2 are detected as described above.

  As described above, the turn signal is automatically turned off regardless of the lane change and the left / right turn.

JP-A-11-70833

  By the way, in the said turn signal lighting control apparatus, there exists a possibility that the light extinction condition which concerns on a lane change may be satisfied at the time of a right or left turn. Specifically, at the time of turning left or right, the steering is not necessarily smoothly rotated by the driver, and the steering is operated according to the situation at that time. For example, the turning direction of the vehicle may be corrected when turning left or right, or the steering may be slightly turned unintentionally by the driver. In these cases, as shown in FIG. 9, the vehicle turns right through a meandering locus 81 instead of the arcuate locus 80 by the turning operation as shown in FIG. 7. Therefore, as shown in FIG. 10, the first peak P1 and the second peak P2 of the steering angle θ may be detected when the steering operation corresponding to the trajectory 81 is performed. In this case, it is determined that the turn-off condition related to the lane change is satisfied, even though the vehicle is turning right or left, and the turn signal is turned off. Thus, the turn signal may not be turned off at an appropriate timing when turning right or left.

  An object of the present invention is to provide a turn signal lighting control device that can prevent an erroneous turn-off of a turn signal when turning right or left.

Hereinafter, means for achieving the above-described object and its operation and effects will be described.
According to the first aspect of the present invention, when the operation means provided in the vicinity of the driver's seat of the vehicle is operated, the turn signal is switched from the previously turned off state to the lit state, and the turning state detecting means turns the turning state of the vehicle. And detecting a turning mode of the vehicle based on a predetermined detection value detected in response to the detection value, and the detection value reaches a first value set in advance based on a detection value assumed to be detected when turning right or left. Then, in the turn signal lighting control device that determines that the turn-off condition is satisfied when the second value is smaller than the first value, and automatically turns off the turn signal, the detected value is the first value. If the value is less than the first value, the first detected value detected when the turning operation is started in the second direction opposite to the first direction after the steering operation in the first direction is performed. 1 peak and 1st peak And when the second peak of the detected value detected when the rotation operation is started again in the first direction, it is determined that the extinction condition is satisfied, The gist is to turn off the turn signal.

  According to this configuration, the turn-off condition changes based on whether or not the detection value of the rotation mode detection means reaches the first value. That is, when the detected value reaches the first value, it is determined that the vehicle is turning right or left, and when the detected value reaches the second value, it is determined that the light-off condition is satisfied, and the turn signal is turned off. On the other hand, when the detected value is less than the first value, it is determined that the lane change has occurred, and when the detected value detects the first peak and the second peak, it is determined that the extinction condition is satisfied, and the turn signal is automatically extinguished. . Here, during a right or left turn, for example, the vehicle traveling direction may be readjusted, or the driver may unintentionally rotate the steering. In such a case, even if the detected value detects the first peak and the second peak, after the detected value reaches the first value, both the peaks are not detected and the turn signal is automatically turned off. There is nothing. Thereby, it is possible to prevent erroneous turn-off of the turn signal when turning right or left.

  According to a second aspect of the present invention, in the turn signal lighting control device according to the first aspect, when the second peak is detected when the detected value at the first peak is less than the first value. The gist is to turn off the turn signal after determining that the turn-off condition is satisfied.

  According to the same configuration, when the detected value at the first peak is less than the first value, it is assumed that the lane change has occurred, and when the second peak is detected thereafter, the extinction condition is established. A decision is made and the turn signal is turned off. Thereby, the turn signal lighting control device may compare the detected value with the first value when the first peak is detected. Therefore, it is possible to more easily prevent the turn signal from being erroneously turned off when turning right or left.

  According to the present invention, in the turn signal lighting control device, it is possible to prevent the turn signal from being erroneously turned off when turning right or left.

(A) in a 1st embodiment is a top view of vehicles, and (b) is a front view of steering. The block diagram which shows the electric constitution of the direction indicator in 1st Embodiment. The graph which shows the change of the steering angle (theta) detected at the time of the left-right turn in 1st Embodiment. The graph which shows the change of the steering angle (theta) detected at the time of lane change in 1st Embodiment. The flowchart which shows the process sequence of the lighting control program in 1st Embodiment. The flowchart which shows the process sequence of the lighting control program in 2nd Embodiment. The graph which shows the change of the steering angle (theta) detected at the time of the conventional left-right turn. The graph which shows the change of the steering angle (theta) detected at the time of the lane change in the past. The top view which showed the locus | trajectory of the vehicle at the time of the conventional right turn. The graph which shows the change of the steering angle (theta) detected at the time of the conventional left-right turn.

(First embodiment)
Hereinafter, a first embodiment in which a turn signal lighting control device according to the present invention is embodied in a vehicle direction indicating device will be described with reference to the drawings.

  As shown in FIG. 1 (a), the direction indicating device informs the driver of the other vehicle of the traveling direction of the host vehicle by turning on a pair of left and right turn signals 2 and 3 provided in front and rear of the vehicle 1, respectively. A direction indicating operation is performed. As shown in FIG. 1B, the base end portion of the turn lever 4 is cantilevered on the steering column 5 of the vehicle 1, and the tip end portion of the turn lever 4 protrudes outside the steering column 5. . The base end portion of the turn lever 4 is supported with respect to the steering column 5 so as to be tiltable by a predetermined angle in a direction along the rotation direction of the steering 6 about a rotation axis disposed inside the steering column 5. ing. The direction indicating operation is performed through the tilting operation of the turn lever 4.

  Specifically, the turn lever 4 is held at the operation neutral position P indicated by a one-dot chain line in FIG. When the turn lever 4 is tilted upward from the operation neutral position P, the turn lever 4 tilts to the left turn operation position PL. Thereby, the turn signal 2 on the left side starts lighting. Further, when the turn lever 4 is tilted downward from the operation neutral position P, the turn lever 4 tilts to the right turn operation position PR. Thereby, the turn signal 3 on the right side starts lighting. When the operating force to the turn lever 4 is released, the turn lever 4 returns to the operation neutral position P by the action of a return mechanism (not shown). That is, in this example, a momentary turn lever is employed. Even if the turn lever 4 returns to the operation neutral position P, the turn signals 2 and 3 are continuously lit unless the turn-off condition described later is satisfied.

Next, the electrical configuration of the direction indicating device will be described.
As shown in FIG. 2, the direction indicating device 10 includes a turn signal lighting control device 11 including a CPU, a ROM, a RAM, and the like (not shown). The ROM of the turn signal lighting control device 11 stores a lighting control program for controlling turning on and off of the turn signals 2 and 3. The RAM is a work area for the CPU to execute various processes by developing the lighting control program stored in the ROM.

  A steering angle sensor 13 is connected to the turn signal lighting control device 11. The steering angle sensor 13 detects the steering angle θ, which is the rotation angle when the steering 6 is rotated by the driver, and turns on the steering angle detection signal Sθ according to the detected steering angle θ. Output to the control device 11. The steering angle sensor 13 functions as a rotation mode detection unit that detects a steering angle θ, which is information indicating a rotation mode with respect to the traveling direction of the vehicle.

  The turn signal lighting control device 11 is connected to a turn switch 16 that is turned on and off in conjunction with the operation of the turn lever 4. When the turn switch 16 detects that the turn lever 4 is tilted from the operation neutral position P to the left turn operation position PL, the turn switch 16 outputs an operation position detection signal SP indicating that to the turn signal lighting control device 11. Further, when the turn switch 16 detects that the turn lever 4 has been rotated to the right turn operation position PR, the turn switch 16 outputs an operation position detection signal SP indicating that to the turn signal lighting control device 11.

  Turn signals 2 and 3 are connected to the turn signal lighting control device 11. When the turn signal lighting control device 11 detects the operation of the turn lever 4 to the operation positions PL and PR based on the operation position detection signal SP, the turn signal lighting control device 11 lights the turn signals 2 and 3 according to the detection result.

  Further, when the turn signal lighting control device 11 starts to turn on the turn signals 2 and 3, the turn signal lighting control device 11 determines whether or not the turn-off condition is satisfied based on the detection signal Sθ from the steering angle sensor 13. The turn signal lighting control device 11 turns off the turn signals 2 and 3 when determining that the turn-off condition is satisfied.

  As shown in FIGS. 1B and 3, the ROM of the turn signal lighting control device 11 has a cancel preparation angle θ1 and a cancel preparation angle θ1 based on the neutral position of the steering 6 (steering angle 0 °). A small cancel angle θ2 is stored. The turn signal lighting control device 11 determines whether or not the steering angle θ has changed based on the steering angle detection signal Sθ from the steering angle sensor 13. Then, the turn signal lighting control device 11 turns off the turn signals 2 and 3 assuming that the turn-off condition is satisfied when the steering angle θ reaches the cancel preparation angle θ1 and then becomes equal to or less than the cancel angle θ2. The cancel preparation angle θ1 corresponds to a first value and a threshold value, and the cancel angle θ2 corresponds to a second value.

  Specifically, the turn signal lighting control device 11 starts detecting the steering angle θ of the steering 6 from the time when the turn signals 2 and 3 are turned on by the direction indicating operation. The position of the steering 6 when the vehicle 1 goes straight is set to the neutral position, and the steering angle θ at that time is set to zero. In this example, the steering angle sensor 13 outputs a positive steering angle θ with respect to 0 ° when the steering 6 is turned clockwise from the neutral position, and the steering 6 is also counterclockwise. When the turning operation is performed, a negative steering angle θ is output. Therefore, when the steering 6 is rotated clockwise from the neutral position, the value of the steering angle θ increases and the course of the vehicle 1 changes from straight to right. Further, when the steering 6 is rotated counterclockwise from the neutral position, the value of the steering angle θ is decreased, and the course of the vehicle 1 is changed from straight to left.

  When turning left or right, as shown in FIG. 3, the steering angle θ changes by a half cycle in a sine wave shape. This is because the steering wheel 6 is turned to turn right and left, and the steering wheel 6 is returned when the vehicle 1 takes a course after turning right and left, so that the vehicle 1 goes straight on the course after turning right and left. Because. When turning right, the turn signal lighting control device 11 determines that the turn-off condition is satisfied when the steering angle θ reaches the cancel preparation angle θ1 (time t1) and then becomes the cancel angle θ2 or less (time t2). Turn off the turn signal 3. Similarly, when turning left, the left turn signal 2 is turned off. Here, the cancel preparation angle θ1 is set to the steering angle θ that is assumed to be detected when turning right or left. In other words, the cancel preparation angle θ1 is set to the steering angle θ that is difficult to detect when the lane is changed. Therefore, when the steering angle θ reaches the cancel preparation angle θ1, it can be estimated that the operation is the steering 6 related to the right / left turn.

  Further, when the lane is changed, as shown in FIG. 4, the steering angle θ changes by one cycle in a sine wave shape. For example, when the lane is changed to the right lane, the steering angle θ increases with the turning operation of the steering 6, and the returning operation of the steering 6 starts when the vehicle 1 takes a course necessary for changing the lane. Is done. At this time, the steering angle θ takes the first peak P1 that switches from increasing to decreasing (time t3). After taking the first peak P1, the steering angle θ decreases toward the neutral position (steering angle 0 °) by the return operation of the steering 6. This return operation is performed beyond the neutral position, that is, to a position where the steering angle θ is a negative value. This is to return the traveling direction of the vehicle 1 to the same direction as before the lane change. When the traveling direction of the vehicle 1 returns, a return operation to the neutral position of the steering 6 is started. At this time, the steering angle θ takes the second peak P2 that switches from decreasing to increasing (time t4).

  The turn signal lighting control device 11 detects the first peak P1 and the second peak P2. Specifically, both peaks P1, P2 are detected on condition that, for example, the slope of a sinusoidal curve indicating the change in the steering angle θ is zero, that is, the increase / decrease in the steering angle θ is zero.

  The turn signal lighting control device 11 detects both peaks P1 and P2, and determines that the turn-off condition is satisfied when the steering 6 is returned by the predetermined amount Δθ from the second peak P2 (time t5). The turn signal lighting control device turns off the right turn signal 3 when it is determined that the turn-off condition related to the lane change is satisfied. Thus, by waiting for the return operation of the steering wheel 6 by a predetermined amount Δθ from the detection of the second peak P2, the turn signals 2 and 3 are turned off at a more appropriate timing. Even when the lane is changed to the left lane, the left turn signal 2 is turned off when both peaks P1 and P2 are detected and the return operation is performed by a predetermined amount Δθ as described above.

  In this way, the turn signal is automatically turned off based on different criteria for changing lanes and turning left and right. Specifically, the turn signal lighting control device 11 changes the judgment criterion for automatic turn-off depending on whether or not the steering angle θ reaches the cancel preparation angle θ1.

  Here, the amount of turning operation of the steering wheel 6 differs between a lane change and a left / right turn. That is, the amount of turning operation of the steering wheel 6 relating to the left / right turn is larger than the amount of turning operation of the steering wheel 6 relating to the lane change. Therefore, as described above, the cancel preparation angle θ1 is assumed to be detected when turning right or left, and the steering angle θ that is difficult to detect when changing lanes, the steering 6 operation relates to either lane change or right / left turn. Can be estimated.

  Specifically, as shown in FIG. 3, when the steering angle θ reaches the cancel preparation angle θ1, it is determined that a right / left turn is made, and thereafter, when the steering angle θ becomes the cancellation angle θ2, it is determined that the turn-off condition is satisfied. The turn signal is turned off. That is, when the steering angle θ reaches the cancel preparation angle θ1, the peaks P1 and P2 are not detected thereafter. Therefore, after the steering angle θ reaches the cancel preparation angle θ1, the turn signals 2 and 3 are not automatically turned off even if both peaks P1 and P2 are seen as shown by the one-dot chain line in FIG. Absent. Here, after the steering angle θ reaches the cancel preparation angle θ1, both peaks P1 and P2 can be seen, for example, when the course direction of the vehicle is corrected, or the steering wheel is turned unintentionally by the driver. It may be operated. Even if such a situation occurs, it is not erroneously determined as a lane change. For this reason, it is possible to prevent erroneous turn-off of the turn signals 2 and 3 when turning right or left.

Further, by comparing the steering angle θ and the cancel preparation angle θ1, it is possible to easily determine whether to change lanes or turn left or right regardless of information such as the vehicle speed.
Next, the operation of the turn signal lighting control device 11 configured as described above will be described with reference to the flowchart shown in FIG. This flowchart is executed by the turn signal lighting control device 11 according to the lighting control program stored in its own ROM.

  First, the turn signals 2 and 3 are turned on based on the operation position detection signal SP (S101). Then, it is determined whether or not the steering angle θ is equal to or greater than the cancel preparation angle θ1 (S102). When it is determined that the steering angle θ is equal to or greater than the cancel preparation angle θ1 (YES in S102), it is determined whether the steering angle θ is equal to or less than the cancel angle θ2 as an operation of the steering 6 accompanying the right / left turn. (S103). Waiting for the steering angle θ to be equal to or less than the cancel angle θ2 (NO in S103), and when the steering angle θ is equal to or less than the cancel angle θ2 (YES in S103), it is determined that the turn-off condition is satisfied (S104). . Then, the turn signals 2 and 3 are turned off (S105).

  On the other hand, when it is determined that the steering angle θ is less than the cancel preparation angle θ1 (NO in S102), it is determined whether or not the first peak P1 is detected (S106). If the first peak P1 is not detected (NO in S106), the process proceeds to step S102, and it is determined again whether or not the steering angle θ is equal to or greater than the cancel preparation angle θ1, and is equal to or greater than the cancel preparation angle θ1. If it is determined, the process proceeds to step S103. That is, after the turn signals 2 and 3 are turned on, the steering angle θ and the cancellation preparation angle θ1 are always compared until the steering angle θ becomes equal to or greater than the cancellation preparation angle θ1 or until the first peak P1 is detected.

  When the first peak P1 is detected (YES in S106), it is determined whether or not the second peak P2 is detected as an operation of the steering 6 accompanying the lane change (S107). Then, waiting for the detection of the second peak P2 (NO in S107), when the second peak P2 is detected (YES in S107), it is determined whether or not the steering 6 has been returned by a predetermined amount Δθ. (S108). Waiting for the steering 6 to be returned by the predetermined amount Δθ (NO in S108), and when the steering 6 is returned by the predetermined amount Δθ (YES in S108), it is determined that the turn-off condition is satisfied (S104). Then, the turn signals 2 and 3 are turned off (S105). Thus, a series of processing from turning on and off of the turn signals 2 and 3 is completed.

  In the above processing procedure, the steering angle θ compared with the cancel preparation angle θ1 and the cancel angle θ2 is determined by an absolute value. Thereby, even when the steering 6 is turned counterclockwise and the steering angle θ having a negative value is output, it is correctly determined.

As described above, according to the embodiment described above, the following effects can be obtained.
(1) The turn-off condition changes based on whether or not the steering angle θ of the steering angle sensor 13 reaches the cancel preparation angle θ1. That is, when the steering angle θ reaches the cancel preparation angle θ1, it is determined that a right / left turn is made, and when the steering angle θ becomes the cancellation angle θ2, it is determined that the light-off condition is satisfied, and the turn signals 2 and 3 are turned off. The On the other hand, when the steering angle θ is less than the cancel preparation angle θ1, it is determined that the lane change has occurred, and when the steering angle θ detects the first peak and the second peak, it is determined that the turn-off condition is satisfied, and the turn signals 2 and 3 Is automatically turned off. Here, during a right or left turn, for example, the vehicle traveling direction may be readjusted, or the driver may unintentionally rotate the steering. In such a case, even if the steering angle θ detects the first peak and the second peak, after the steering angle θ reaches the cancel preparation angle θ1, the detection of both peaks P1 and P2 is not performed, so the turn signal 2 and 3 are not automatically turned off. Thereby, it is possible to prevent erroneous turn-off of the turn signals 2 and 3 when turning right or left.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to FIG. In this embodiment, the lighting control program is different from that of the first embodiment. Hereinafter, a description will be given focusing on differences from the first embodiment. The direction indicating device of this embodiment has the same configuration as the direction indicating device of the first embodiment shown in FIG.

The operation of the turn signal lighting control device 11 in this embodiment will be described with reference to the flowchart shown in FIG.
First, the turn signals 2 and 3 are turned on based on the operation position detection signal SP (S151). And it is judged whether the 1st peak P1 was detected (S152). Waiting for detection of the first peak P1 (NO in S152), it is determined whether or not the steering angle θ when the first peak P1 is detected is equal to or greater than the cancel preparation angle θ1 (S153). When it is determined that the steering angle θ is equal to or greater than the cancel preparation angle θ1 (YES in S153), it is determined whether the steering angle θ is equal to or less than the cancel angle θ2 as an operation of the steering 6 accompanying the right / left turn. (S154). Waiting for the steering angle θ to become equal to or less than the cancel angle θ2 (NO in S154), when the steering angle θ becomes equal to or less than the cancel angle θ2 (YES in S154), it is determined that the turn-off condition is satisfied (S155). . Then, the turn signals 2 and 3 are turned off (S156).

  On the other hand, when it is determined that the steering angle θ is less than the cancel preparation angle θ1 (NO in S153), it is determined whether or not the second peak P2 is detected as an operation of the steering 6 accompanying the lane change. (S157). Waiting for the second peak P2 to be detected (NO in S157), when the second peak P2 is detected (YES in S157), it is determined whether or not the steering 6 has been returned by a predetermined amount Δθ (see FIG. 5). S158). Waiting for the steering 6 to be returned by the predetermined amount Δθ (NO in S158), and when the steering 6 is returned by the predetermined amount Δθ (YES in S158), it is determined that the turn-off condition is satisfied (S154). Then, the turn signals 2 and 3 are turned off (S155).

  As described above, when the first peak P1 is detected, the steering angle θ and the cancel preparation angle θ1 may be compared. Therefore, unlike the first embodiment, it is not always necessary to compare the steering angle θ with the cancel preparation angle θ1 after the turn signals 2 and 3 are turned on. For this reason, it is possible to prevent erroneous turn-off of the turn signals 2 and 3 when turning right and left with easier control.

As described above, according to the embodiment described above, in addition to the function and effect of (1) of the first embodiment, the following function and effect can be achieved.
(2) When the steering angle θ at the first peak P1 is less than the cancel preparation angle θ1, it is determined that the lane change has occurred, and thereafter, when the second peak P2 is detected, it is determined that the turn-off condition is satisfied. The turn signals 2 and 3 are turned off. Thereby, the turn signal lighting control device 11 may compare the steering angle θ and the cancel preparation angle θ1 when the first peak P1 is detected. Therefore, it is possible to more easily prevent the turn signals 2 and 3 from being erroneously turned off when turning right or left.

In addition, the said embodiment can be implemented with the following forms which changed this suitably.
In the above embodiment, the cancellation preparation angle θ1 and the cancellation angle θ2 are constant, but the cancellation preparation angle θ1 and the cancellation angle θ2 may be variable according to the vehicle speed. In this case, it is necessary to provide the vehicle 1 with a vehicle speed sensor.

  In general, when the vehicle is traveling at a low speed, the steering can be greatly rotated. However, when the vehicle is traveling at a high speed, excessive lateral acceleration is applied to the driver, etc. As with the inside, the steering cannot be rotated greatly. Therefore, the amount of turning operation and returning operation of the steering wheel 6 decreases as the speed increases even during a right or left turn. Therefore, for example, when the cancel angle θ2 and the cancel preparation angle θ1 are set uniformly, the steering angle θ of the steering wheel 6 does not reach the cancel preparation angle θ1 when turning right or left, or the timing when the cancel angle θ2 or less is delayed. It is assumed that By changing the cancel angle θ2 and the cancel preparation angle θ1 according to the vehicle speed, the above problem can be solved and the turn signals 2 and 3 can be turned off at an appropriate timing. Specifically, the cancellation preparation angle θ1 and the cancellation angle θ2 are set smaller as the vehicle speed increases.

  In both the above embodiments, both peaks P1 and P2 are detected on condition that the slope of the sinusoidal curve indicating the change in the steering angle θ is zero, that is, the increase or decrease in the steering angle θ is zero. However, the detection method of both peaks P1, P2 is not limited to this, and for example, the maximum value of the steering angle θ may be determined as the first peak P1, and the minimum value may be determined as the second peak P2.

  In both the above embodiments, it is determined that the turn-off condition is satisfied when the steering 6 is returned by the predetermined amount Δθ from the second peak P2 in the lane change. However, when the second peak P2 is detected, it may be determined that the turn-off condition is satisfied.

  In both of the above embodiments, the steering angle sensor 13 is provided as the turning mode detection means. However, the rotation angle detection means is not limited to the steering angle sensor 13, and for example, the rotation accompanying the change in the course of the vehicle is detected as the turning mode detection means. A yaw rate sensor may be provided. In this configuration, the yaw rate is detected through the yaw rate sensor as the steering 6 is turned, and the change in the detected value is detected as a sinusoidal waveform as in FIGS. At this time, by changing the cancel preparation angle θ1 and the cancel angle θ2 to set the first yaw rate value and the second yaw rate value, the same effects as those of the both embodiments can be obtained.

Next, the technical idea that can be grasped from the embodiment will be described together with the effects.
(A) In the turn signal lighting control device according to claim 1 or 2, the turning mode detecting means is a yaw rate sensor that detects a rotation accompanying a change in the course of a vehicle, and the detected value is detected by the yaw rate sensor. Turn signal lighting control device that is the yaw rate to be.

  According to this configuration, the turning mode of the vehicle can be determined through the yaw rate detected by the yaw rate sensor, and erroneous turn-off of the turn signal at the time of right / left turn can be prevented.

(B) In the turn signal lighting control device according to any one of claims 1 and 2 , and (a), the first signal is increased as the vehicle speed increases based on a detection result of a vehicle speed sensor that detects the vehicle speed. A turn signal lighting control device for setting the value and the second value small.

  In general, when the vehicle is traveling at a low speed, the steering can be greatly rotated. However, when the vehicle is traveling at a high speed, excessive lateral acceleration is applied to the driver, etc. As with the inside, the steering cannot be rotated greatly. Accordingly, the amount of steering rotation and return operation decreases as the speed increases even during a right or left turn. Therefore, for example, when the first value and the second value are set uniformly, the detected value does not reach the first value at the time of turning left or right, or the timing when the value becomes equal to or less than the second value is delayed. It is assumed that By changing the first value and the second value according to the vehicle speed, the above problem can be solved, and the turn-off timing of the turn signal can be made more appropriate.

  DESCRIPTION OF SYMBOLS 2,3 ... Turn signal, 4 ... Turn lever (operation means), 10 ... Direction indication apparatus, 11 ... Turn signal lighting control apparatus, 13 ... Steering angle sensor.

Claims (2)

When the operating means provided in the vicinity of the driver's seat of the vehicle is operated, the turn signal is switched from the extinguished state to the lit state, and the predetermined detection detected according to the turning mode of the vehicle by the turning mode detecting unit. Based on the value, the turning mode of the vehicle is detected, and after the detection value reaches a first value that is set in advance based on a detection value that is assumed to be detected when turning right or left, the first value is In the turn signal lighting control device for determining that the turn-off condition is satisfied when the second value is small, and automatically turning off the turn signal,
When the detected value is less than the first value, when the steering operation is started in a second direction that is opposite to the first direction after the steering is rotated in the first direction. A first peak of the detected value detected at a second time and a second peak of the detected value detected when the rotation operation is started again in the first direction after the first peak is detected. A turn signal lighting control device that turns off the turn signal by determining that the light extinction condition is satisfied when the peak is detected. In the turn signal lighting control device according to claim 1,
Turn signal lighting control for turning off the turn signal by determining that the turn-off condition is satisfied when the second peak is detected when the detection value at the first peak is less than the first value. apparatus.

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