JP2547191B2 - Directional lamp control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direction indicator lamp control device capable of sending a thank-you greeting signal to a succeeding vehicle when an interruption occurs in a traveling train.

[0002]

2. Description of the Related Art Conventionally, for example, when a lane change is made by interruption while the vehicle is traveling, there are cases where it is desired to express some gratitude to the drivers of the vehicle who made the interruption. To do this, turn on the hazard light switch or a direct expression method such as raising the hand lightly to the drivers of other vehicles, and turn on the existing direction indicators or headlamps on the vehicle for a certain period of time. At present, there is only such an indirect expression method.

[0003]

However, the expressions such as the above-mentioned thank-you are simple because they need to concentrate on driving, and
It is desirable to be able to communicate reliably. For this reason, operations such as raising the hand or pressing down the hazard lamp switch are not preferable because they cannot concentrate on driving or require operation of switches that are not in the original driving operation. Further, even if the above operation is performed, it was doubtful whether or not the intention here is transmitted to the drivers of other vehicles.

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to ensure that the driver of another vehicle can thank others by a simple operation. An object of the present invention is to provide a directional lamp control device capable of transmitting.

[0005]

SUMMARY OF THE INVENTION The present invention detects an on / off signal having a predetermined cycle for turning on a turn signal lamp of a vehicle, and when only one on / off signal is detected within a predetermined time, The direction indicator lamp is driven to blink for a predetermined time. In particular, the control means can be constituted by the following means. Timing is started in synchronization with the level transition of the on / off signal having a predetermined cycle for blinking the direction indicator lamp of the vehicle, and a first predetermined time longer than one cycle of the on / off signal and shorter than two cycles is measured. A first timer for resetting and restarting time measurement at each level transition of the on / off signal, and outputting a duration signal indicating a duration during which the on / off signal is continuously output, and a duration time The clock is reset and started in synchronization with the start of the duration indicated by the signal, and the first
Of the timer (23), which is longer than the first predetermined time and is shorter than two cycles of the on / off signal, and measures the second predetermined time, which is the judgment reference indicating the time when the second predetermined time has elapsed after the start of the continuation period. A second timer (24) that outputs a signal and a duration signal and a determination reference signal are input, and a display that blinks and drives all the direction indicator lamps when the duration is over at the determination reference time. A signal output means for outputting a signal only for a predetermined time.

Further, another configuration of the control means can be as follows. The control means measures a time that is longer than one cycle of the on / off signal and shorter than two cycles as a predetermined time, starts the clock in synchronization with the level transition of the on / off signal, and measures the time every time the level transition of the on / off signal occurs. Timer means for resetting and restarting and defining a duration for which the on / off signal is continuously output, level transition detecting means for detecting the level transition of the on / off signal during counting by the timer means, and level transition detecting means According to the present invention, when a predetermined time elapses without detecting a level transition, the signal output means can output a display signal for driving all direction indicator lamps to blink for a predetermined time.

Further, according to another aspect of the invention, the cycle detecting means is provided for detecting the cycle of level transition of the on / off signal for blinking the direction indicator lamp of the vehicle, and the cycle detecting means detects the predetermined time measured by the timer means. It is characterized in that it is set based on the cycle. In this case, it is possible to freely deal with vehicles having different on / off signal periods.

[0008]

The first timer starts the timing of the level transition of the on / off signal during the time counting by the timer means in synchronization with the level transition of the on / off signal having a predetermined cycle for blinking the direction indicator lamp of the vehicle. To do. Further, the first timer measures a first predetermined time which is longer than one cycle of the on / off signal and shorter than the two cycles thereof. Further, the first timer resets and restarts the time measurement each time the level of the on / off signal changes. Therefore, when the on / off signal is output at a predetermined cycle and the level transition occurs, the first
The period from the start of time counting by the timer is successively updated and recognized as a continuous period, and the first timer outputs a continuous period signal corresponding to the continuous period. The second timer resets and starts clocking in synchronization with the start of the continuation period indicated by the continuation period signal output from the first timer. The second timer counts a second predetermined time which is longer than the first predetermined time of the first timer and shorter than two cycles of the on / off signal. Then, the second timer outputs a determination reference signal for setting the determination reference time to the time point at which the second predetermined time has elapsed after the start of the duration of the duration signal in the first timer.

Here, if the ON / OFF signal is once, the first
The duration signal output from the timer is the first predetermined time. In this case, since the judgment reference signal from the second timer is originally set longer than the first predetermined time, the duration of the first timer ends when the judgment reference signal of the second timer ends. There is. Therefore, in this case, the signal output means outputs the ON / OFF display signal for blinking the direction indicator lamp to the direction indicator lamp. Next, when the on / off signal is twice, the duration signal output from the first timer is the sum of the time of one cycle of the on / off signal and the first predetermined time. The duration signal at this time is longer than at least two cycles of the on / off signal because the first predetermined time is longer than one cycle of the on / off signal. Then, the duration of the first timer has not expired at the time of the determination reference by the second timer.
Therefore, in this case, the signal output means does not output the display signal for driving the direction indicating lamp to blink to the direction indicating lamp. Similarly, when the on / off signal is three times or more, the display signal is not output to the direction indicator lamp.

As described above, it is determined whether the ON / OFF signal for blinking the direction indicator lamp within the duration of the first timer is present as one pulse or as a plurality of continuous pulses within the predetermined time. In the case of only one pulse, a thank-you signal is output by blinking all the direction indicator lamps simultaneously for a predetermined time.
Further, in the case of continuous pulses, only the direction indicator lamp on one side blinks because of the normal direction change. In another invention, it works as follows. The timer means operates similarly to the first timer means described above. The level transition detecting means detects the presence or absence of level transition of the on / off signal during the time counting by the timer means. If a new on / off signal is not read within a predetermined time measured by the timer means, the level transition detection means determines that the on / off signal is not detected, and the signal output means causes the display signal for driving the direction indicator lamp to blink to indicate the direction. Output to the lamp. On the other hand, when a new on / off signal is read within a predetermined time measured by the timer means, the level transition detection means determines that the on / off signal is detected, and the signal output means turns on / off the display signal for driving the direction indicator lamp to blink. Will not be output to the direction indicator lamp. In another invention, in the above invention, the first timer measured by the first timer is used.
Of the predetermined time, the second predetermined time measured by the second timer,
The predetermined time measured by the timer means is set by actually detecting the cycle of the on / off signal for blinking the direction indicator lamp and based on the detected cycle. Therefore, even if the cycle of the on / off signal differs depending on the vehicle type, it can be easily dealt with.

[0011]

EXAMPLES The present invention will be described below based on specific examples. First Embodiment FIG. 1 is a block diagram showing a direction indicator lamp control device according to the present invention. The direction indicator lamp control device 100 mainly includes a control device 20, clips 30R and 30L, a power plug outlet 40, and an operation confirmation lamp 50.

The clips 30R, 30L receive the right or left direction indicating signals S _R, S _L which are ON / OFF signals having a predetermined cycle for blinking the right or left direction indicating lamps L _R, L _L of the vehicle. Are provided at the tips of the signal input lines L _S. Then, the direction instruction rear right and left wired in a vehicle trunk lamp L _R, is electrically connected to the signal line L _L. The front and rear direction indicator lamps on one side are connected in parallel, and the front and rear direction indicator lamps flash at the same time. Further, the power plug outlet 40 is inserted into a socket (not shown) for a cigarette lighter of a vehicle, and supplies electric power to the control device 20 through a power supply line L _D. The operation confirmation lamp 50 is a power plug outlet 4
It is possible to confirm whether the direction indicator lamps L _{R and} L _L are arranged in the middle of the power supply line L _D from 0 to the control device 20 by blinking the lamp 50. The operation confirmation lamp 50 is fixed on the front panel of the driver at a place where it is easy to confirm without disturbing. Further, the central portion of the lamp 50 serves as a push button switch 51. By pressing this push button switch 51, the direction indicator lamp control device 10
Even if 0 is in the middle of operation, the operation can be interrupted.

FIG. 2 is a block diagram showing the control unit 20. By operating a direction indicating lever (not shown) of the vehicle, either the right or left direction indicating signal S _{R or} S _L is output to the right or left direction indicating lamp L _{R or} L _L. From the clips 30R, 30L electrically connected to the signal lines of the direction indicating lamps L _R, L _L , either the direction indicating signals S _R, S _{L on the} right or left side.
Via the signal input line L _S respectively.
Input to R and 21L. The waveform shaping circuit 21R, 2
At 1L, the direction indicating signals S _{R and} S _L are respectively shaped into a square wave and then input to the OR circuit 22. The output signal A from the OR circuit 22 is input to the input terminal (T) of the retriggerable one-shot multivibrator 23 which constitutes a first timer (first predetermined time = 1 second).
The signal A is a signal having a cycle of about 0.7 sec.

The output signal B from the output terminal (Q) of the retriggerable one-shot multivibrator 23 is output from the one-shot multivibrator 24 which constitutes a second timer (second predetermined time = about 1.2 sec) in the subsequent stage. It is input to the input terminal (T). Further, the output signal E from the output terminal (-Q) of the retriggerable one-shot multivibrator 23 is input to the input terminal (D) of the flip-flop circuit 25 which achieves the determination means at the subsequent stage. An output signal C is output from the output terminal (Q) of the one-shot multivibrator 24, and an output signal D from the output terminal (-Q) is input to the clock input terminal (CK) of the flip-flop circuit 25. . Then, the output signal F from the output terminal (Q) of the flip-flop circuit 25 is input to the input terminal (T) of the one-shot multivibrator 26 that achieves the signal output means of the subsequent stage, and at the same time, the reset input terminal (R) of itself. ) Is entered.

The output signal G from the output terminal (Q) of the one-shot multivibrator 26 is input to the multivibrator (oscillator) 28. Then, the multivibrator 28 outputs a rectangular wave to the transistors 29 and 30 only while the signal G is being input. As a result, the transistors 29, 30 are repeatedly turned on and off only during that period, and the direction indicator lamps L _L, L _R are intermittently supplied with current from the battery 60. The front left and right direction indicator lamps are the rear direction indicator lamps L _{L and} L _R , respectively.
Since the four direction indicator lamps are connected in parallel with each other, an intermittent current is simultaneously supplied to the four direction indicator lamps, and the four direction indicator lamps flash simultaneously for a predetermined time. This signal allows the driver of another vehicle behind to receive a thank-you signal from the driver ahead. At this time, the direction indicator lamp L _L,
Since L _R blinks once or more repeatedly, this signal does not serve as an activation signal for the next thank-you signal. Can be a direction indicator lamp L _R by turning on the operation confirmation lamp _50, also the direction indication lamp control device 100 by depressing the push button switch 51 it is confirmed flashing L _L is a middle operation suspend its operation . The push button switch 51 has a built-in delay timer longer than the output time of the signal G. Therefore, when the push button switch 51 is once pushed to stop the power supply to the direction indicating lamps L _{R and} L _L , during the output time of the same signal G, the direction indicating lamp L
_R, not the power supply is to _L L.

First, the operation of the apparatus of this embodiment at the time of normal direction change will be described with reference to FIG. The direction indicating signal S _R or S _L at the time of normal direction conversion is input to the waveform shaping circuits 21R and 21L, and the OR circuit 22 outputs the signal A.
Repetitive square wave of about 0.7 sec is output as shown in. For example, in one normal right turn operation, the signal A is repeatedly output as a rectangular wave five times. Then, the signal B from the retriggerable one-shot multivibrator 23 is
The signal A rises at the same time as the first rising t ₀ , and is reset and restarted every time the signal A rises in a repeating rectangular wave of about 0.7 sec. Then, the signal B is about 1 sec after the fifth rising edge t ₂ of the rectangular wave which is the last of the signal A.
After that, it falls to t ₃ . That is, the signal B is about 3.8 sec (= (0.7
It becomes H level during the period of x4) +1) and becomes a continuous period signal.

On the other hand, the signal E from the retriggerable one-shot multivibrator 23 is the inverted state of the signal B. Further, the signal C from the one-shot multivibrator 24 rises at the same time as the first rising t ₀ of the signal A, and falls at t ₁ about 1.2 seconds after the timer time. That is, the signal C becomes H level for a period of about 1.2 sec, and becomes the judgment reference signal. On the other hand, the signal D from the one-shot multivibrator 24 is in the inverted state of the signal C.
Then, in the flip-flop circuit 25, the signal D is at the H level for about 1.2 seconds and the signal E is for about 3.8 seconds. Therefore, at the time (determination reference time) t ₁ at which the clock input terminal (CK) transitions from the L level to the H level, the input terminal (D) is at the H level, so that the output terminal (Q) of the flip-flop circuit 25 Signal F remains at L level. Here, for example, the direction indicating signal S is input twice, and the signal A from the waveform shaping circuit 21 is assumed to be two rectangular waves. Then, the signal B is at the H level for a period of about 1.7 sec (= 0.7 + 1), and the signal C is at the H level for a period of about 1.2 sec, so that the signal F does not transit to the H level as described above.

Next, referring to FIG. 4, a case where the apparatus of this embodiment is operated will be described. Direction signal S at this time
, The waveform shaping circuit 21 outputs a rectangular wave once like the signal A. Then, the signal B from the retriggerable one-shot multivibrator 23 rises at the same time as the first rising t ₀₀ of the signal A, and falls at t ₀₁ after about 1 second. That is, the signal B is at H level for a period of about 1 sec, and becomes a continuous period signal. On the other hand, the signal E from the retriggerable one-shot multivibrator 23 is the above-mentioned signal B.
Will be in the reverse state. Further, the signal C from the one-shot multivibrator 24 rises at the same time as the first rising t ₀₀ of the signal A, and about 1.2 sec after the timer time t.
_Get down to ₀₂ . That is, the signal C is approximately the same as in the above case.
It becomes H level for a period of 1.2 sec and becomes a judgment reference signal.

On the other hand, the one-shot multivibrator 2
The signal D from 4 becomes the inversion state of the signal C. Then, in the flip-flop circuit 25, the signal D is about 1.
For 2 seconds, the signal E is at H level for about 1 second. Therefore, at the time (judgment reference time) t ₀₂ at which the clock input terminal (CK) changes from the L level to the H level, the input terminal (D) has already changed from the L level to the H level. The signal F from the output terminal (Q) of the flip-flop circuit 25
Rises from the L level to the H level at the judgment reference time t ₀₂ . Also, at the same time as the rising, the flip-flop circuit 2
Since the signal 5 is reset, the signal F becomes a pulse signal having a constant width. Then, the one-shot multi-vibrator 26
The signal G from 1 rises at the same time as the rising t _{02 of the} signal F and falls after a predetermined time (for example, 5 seconds). Then, the multi-vibrator 2 only for this predetermined time.
8 operates, and the on / off signal H is output. The on / off signal H turns on / off the transistors 29 and 30 _, and current is intermittently supplied from the battery 60 to all the direction indicator lamps L _{R and} L _L. As a result, all the direction indicator lamps L _{R and} L _L blink for a predetermined time.

As described above, in the direction indicating lamp control device of the present invention, since the direction indicating signal from the direction indicating lever arranged near the steering wheel of the vehicle is also used,
There is no need to provide a special switch or the like for the signal input. The input by this direction indicating lever is no different from the operation when changing direction, and the number of times of operation is 1
Since it is limited to only once, you can concentrate on driving and not interfere with the original driving operation. That is, by a simple operation using the direction indicating lever, it is possible to transmit a thank-you signal to the drivers of other vehicles who have been interrupted by blinking all the direction indicating lamps for, for example, 3 seconds. As a result, it is possible to expect an effect that communication between vehicles, which has been rare in the past, can be achieved.

Second Embodiment The structure of the direction indicator lamp control device according to the second embodiment of the present invention is the same as that of FIG. The control device of this device is composed of a computer system. The present device actually detects the cycle of the on / off signal that causes the turn signal lamp to blink with respect to the first embodiment device, and based on the detected cycle,
The predetermined time is set. FIG. 5 is a block diagram showing the configuration of the control device 20 in the turn signal lamp control device 100 according to the present embodiment.

The control unit 20 includes an interface 321, a CPU 322, and a ROM 323 storing a control program.
And a RAM 324 for storing various data. The on / off signal, which is a direction instruction signal, is sent to the interface 32.
1 is input to the CPU 322. Also, the CPU 32
The output signal from 2 is output to the direction indicator lamps L _{R and} L _L via the interface 321, and the direction indicator lamps L _{R and} L _L are operated based on this output signal. RAM324
A signal cycle storage area 3241 for storing the signal cycle of the on / off signal and a predetermined time storage area 3242 for storing a predetermined time set based on the signal cycle of the on / off signal are formed therein. The contents of the signal cycle storage area 3241 and the predetermined time storage area 3242 are updated each time a direction instruction signal is input, as described later.

Next, the CP used in the apparatus of this embodiment.
This will be described based on the flowchart of FIG. 6 showing the processing procedure of U322 and with reference to the time charts of FIGS. 7 and 8. The time chart of FIG. 7 corresponds to the case where the direction indicator lamp blinks to change the direction of the vehicle, and the time chart of FIG. 8 corresponds to the case where the device of this embodiment for outputting a thank-you signal is activated.

When the ignition switch of the vehicle is turned on, first, in step 100, initialization is executed.
Next, the process proceeds to step 102, waits until the on-off signal X is read (level transition), and then step 104
Then, the timer starts timing (time t ₀ shown in FIG. 7). Next, in step 106, it is determined whether or not there is a new level transition of the on / off signal X.
The determination in step 106 is repeatedly executed until the predetermined time Ta in step 108 has elapsed. The predetermined time Ta in this case is preset to, for example, 2 sec, which is the maximum time of the direction instruction signal output based on the direction instruction lever of the vehicle in the initial setting of step 100 described above.

First, the processing in the case where the direction indicator lamp on one side shown in FIG. 7 blinks to turn the vehicle will be described. The on / off signal X for blinking the direction indicator lamp has the input of the next pulse by the time when the preset predetermined time Ta ends, and there is a new level transition, so the routine proceeds to step 110. Step 11
At 0, the period Tc of the on / off signal read in step 102 and step 106 is calculated by the timer counter and stored in the signal period storage area 3241 of the RAM 324. Next, the routine proceeds to step 112, where the actual predetermined time Ta which is longer than one cycle and shorter than two cycles of the on / off signal calculated in step 110 instead of the above-mentioned initial setting value is set.
Is set, and the storage area 3242 of the RAM 324 for a predetermined time is set.
Is stored. Here, the relationship between the period Tc of the on / off signal and the predetermined time Ta is 2Tc>Ta> Tc, and for example, Ta = Tc × 1.5 is set.

Next, in step 114, the timer of the predetermined time Ta is reset and restarted, and then the process proceeds to step 116, in the same manner as in step 106 described above, is there a new level transition of the on / off signal X? It is determined whether or not. If there is a level transition in step 116, step 1
18, the predetermined time T set in step 112
The timer of a is reset and restarted repeatedly (from time t ₀ to time t ₁ shown in FIG. 7).
Then, if there is no new level transition of the on / off signal X even if the predetermined time Ta has elapsed in step 120, it is determined that the on / off signal X, which is a series of directional signals, has ended, and the process proceeds to step 102 described above. The same processing is repeatedly executed after waiting for the reading of the on / off signal. Based on the ON / OFF signal X, the period from time t ₀ to time t ₂ shown in FIG. 7 is set as the continuous period Y, and the display signal Z is prohibited from being output within the continuous period Y.

Next, the processing for outputting a thank-you signal as shown in FIG. 8 will be described. In step 102,
After waiting for the reading of the on / off signal X, the routine proceeds to step 104, and the time counting by the timer is started (time t ₀₀ shown in FIG. 8). Next, move to step 106,
It is determined whether or not there is a new level transition of the on / off signal X. The determination in step 106 is repeatedly executed until the predetermined time Ta in step 108 has elapsed.
This on / off signal X is at time t ₀₁ when the predetermined time Ta ends.
Since there is no new level transition by (= t ₀₀ + Ta), the process proceeds to step 122. In step 122, after the display signal Z that repeats on / off for about 3 seconds is output to the direction indicating lamps L _{R and} L _L , the process proceeds to step 102 described above, and the same processing is repeatedly executed after waiting for the reading of the next on / off signal. To be done. When the direction switch lever is first operated once to output a thank-you signal after the ignition switch is turned on, the predetermined time Ta is set to a preset value, for example, 2 seconds, which is slightly longer. However, when the predetermined time Ta has ended, the display signal Z which is repeatedly turned on and off is output similarly. As described above, the device of the second embodiment has the same effect as the device of the first embodiment.

Third Embodiment FIG. 9 is a block diagram showing a control device 20 of a turn signal lamp control device 100 according to a third embodiment of the present invention. The hardware configuration of this embodiment is the same as that of the first embodiment. As in the second embodiment, the cycle of the on / off signal for blinking the direction indicator lamp is actually detected, and a predetermined time period is determined based on the cycle. Make settings.

Similar to the first embodiment, the direction indicating signals S _R, S
_L is input to each of the waveform shaping circuits 210R and 210L, each of which is shaped into a square wave, and then the OR circuit 2
It is input to 20. The output signal A from the OR circuit 220 is input to the input terminal (T) of the retriggerable one-shot multivibrator 230 which constitutes the timer means and the timer circuit 280 which counts one cycle Tc of the on / off signal A. The output of the timer circuit 280 is the latch circuit 29.
It is input to the retriggerable one-shot multivibrator 230 and the one-shot multivibrator 240 via 0. The output signal A of the timer circuit 280 is 1
If it is a level transition only once, it is cleared when the timer time overflows. In this case, the previous value stored in the latch circuit 290 is adopted again.

The above-mentioned output is connected to the resistors R _1, R _2, R _3, R ₄ of the retriggerable one-shot multivibrator 230 and the one-shot multivibrator 240 in series, and the transistors Tr ₁ , Tr ₂ , Tr ₃ , Tr ₃ , It is input to the base of Tr ₄ and turns on the transistor. Then, the time constants of the retriggerable one-shot multi-vibrator 230 and the one-shot multi-vibrator 240 are set by the CR circuit formed by the combination of one or more resistors and capacitors in which the transistors are turned on. That is, for example, the resistance R ₁ is 100 kΩ, the resistance R ₂ is (1/2) 100 kΩ, the resistance R
Let ₃ be (1/4) 100kΩ and resistor R ₄ be (1/8) 100kΩ. Then, for example, the output from the latch circuit 290 is (1,1,1,1)
Then, all the transistors Tr ₁ , Tr ₂ , Tr ₃ , Tr _{4 are}
Turns on. At this time, the total resistance is [1 / {1+ (1/2) + (1/4) + (1/8)}] 100 kΩ because of the parallel connection.
In this way, by the resistance and the capacitance of the capacitor C ₀ ,
In the retriggerable one-shot multivibrator 230, a time constant is set that corresponds to the time interval at which the level of the turn signal changes. Further, the time constant of the one-shot multivibrator 240, which is slightly longer than the time constant of the retriggerable one-shot multivibrator 230, is set by the resistance of the total resistance and the resistance of the capacitor C ₀ added to the resistance R ₅ .

The time constant of the retriggerable one-shot multivibrator 230 becomes the predetermined time Ta. Further, the time constant of the one-shot multivibrator 240 becomes the judgment time Tj for detecting the level transition for judging the continuation of the on / off signal. One-shot multi-vibrator 2
Reference numeral 40 constitutes a level transition detecting means. The output signal B from the output terminal (Q) of the retriggerable one-shot multivibrator 230 is input to the input terminal (T) of the one-shot multivibrator 240. Also, the output signal E from the output terminal (-Q) of the retriggerable one-shot multivibrator 230 is input to the input terminal (D) of the flip-flop circuit 250 that achieves the level transition means of the subsequent stage. The signal G from the one-shot multivibrator 260 is the multivibrator 31.
Are typing in. Then, the multi-vibrator 31 outputs a rectangular wave to the transistor 3 only while the signal G is being input.
It outputs to 2, 33. As a result, the transistors 32,
33 repeatedly turns on and off only during that period, and the current is supplied from the battery 60 to the direction indicator lamps L _{L and} L _R.
The front left and right direction indicator lamps are connected in parallel with the rear direction indicator lamps L _{L and} L _R , respectively.
An intermittent current is simultaneously supplied to the four turn signal lamps, and the four turn signal lamps simultaneously flash for a predetermined time. This signal allows the driver of another vehicle behind to receive a thank-you signal from the driver ahead. At this time, since the direction indicator lamps L _{L and} L _R blink repeatedly more than once, this signal does not become a start signal for the next thank-you signal.

Next, the operation of the control circuit of the apparatus of this embodiment at the time of changing the direction will be described with reference to FIG. The device of the present embodiment operates in the same manner as the device of the first embodiment, except that the predetermined times Ta and Tj are set based on the cycle Tc of the on / off signal X actually detected.

The output signal A is a repetitive rectangular wave having a Tc period, and the retriggerable one-shot multivibrator 2
The signal B from 30 is the first rising time t of the signal A.
_It rises at the same time as ₀ , and is reset and restarted each time the repeating rectangular wave of the Tc cycle of the signal A rises. Then, the signal B falls at a time t ₃ which is a predetermined time Ta after the rising time t ₂ of the fifth rectangular wave which is the last of the signal A. That is, the signal B is at the H level during the period from the time t ₀ to the time t ₃ and is in the continuous period. On the other hand, the signal E is the inverted state of the signal B. Further, the signal C from the one-shot multivibrator 240 rises at the same time as the first rising time t ₀ of the signal A and falls at the time t ₁ set by the time constant. That is, the signal C is at time t _0.
It becomes H level in a period until time t ₁ from a determination time Tj for detecting a level transition of the on-off signals. Incidentally, Tj
> Ta. On the other hand, the signal D becomes the inverted state of the signal C.

Then, in the flip-flop circuit 250, the signal D is at H level from time t ₀ to time t ₁ and the signal E is at H level from time t ₀ to time t ₃ . Therefore, at the time t ₁ when the clock input terminal (CK) transits from the L level to the H level, the input terminal (D) is at the H level, and therefore the signal F from the output terminal (Q) of the flip-flop circuit 250 is at L level. It remains at the level. here,
For example, the direction indication signal S is input twice, and the signal A from the waveform shaping circuit 210 has two rectangular waves. Then, the signal B is at the H level during the period (Tc + Ta) from the time t ₀ , and the signal C is during the period H from the time t ₀ to the time t _1.
Since the level is (Tc + Ta)> Tj, the signal F does not transition to the H level as described above.

Next, with reference to FIG. 11, a case where the apparatus of this embodiment is operated will be described. As the direction indicating signal S at this time, a single rectangular wave is output from the waveform shaping circuit 210 like the signal A. Then, the signal B from the retriggerable one-shot multivibrator 230 rises at the same time as the first rising t ₀₀ of the signal A, and the predetermined time Ta
It falls at a later time t ₀₁ . That is, the signal B is at the H level during the period from time t ₀₀ to time t ₀₁ , which is a continuous period.

On the other hand, the signal E from the retriggerable one-shot multivibrator 230 is in the inverted state of the signal B. The signal C from the one-shot multivibrator 240 is first rising t ₀₀ simultaneously with the rise of the signal A, it falls at a time t ₀₂ which is set by the time constant. That is, the signal C is at H level during the period from time t ₀₀ to time t _02, which is the determination time Tj for detecting the level transition of the on / off signal. Incidentally, Tj> Ta.

On the other hand, the one-shot multivibrator 2
The signal D from 40 is the inverted state of the signal C. Therefore, in the flip-flop circuit 250, the signal D is at H level during the period from time t ₀₀ to time t ₀₂ , and the signal E is during the period from time t ₀₀ to time t ₀₁ . Therefore, the time t at which the clock input terminal (CK) transitions from the L level to the H level
_{In 02} , the input terminal (D) has already transited from the L level to the H level. The signal F from the output terminal (Q) of the flip-flop circuit 250 rises from the L level to the H level at time t ₀₂ . Further, since the flip-flop circuit 250 is reset at the same time as the rising edge, the signal F becomes a pulse signal having a constant width. Then, the signal G from the one-shot multivibrator 260 rises at the same time as the rising time t ₀₂ of the signal F and falls after a predetermined time (for example, 5 seconds). That is, the signal G is output to the multivibrator (oscillator) 31 for this predetermined time, and the direction indicating lamps L _{R and} L _L are blinked. Then, the multi-vibrator 3 only for this predetermined time.
1 is activated and the on / off signal H is output. The on / off signal H turns on / off the transistors 32 and 33 _, and current is intermittently supplied from the battery 60 to all the direction indicator lamps L _{L and} L _R. As a result, all the direction indicator lamps L _{L and} L _R blink for a predetermined time.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a direction indicator lamp control device according to a specific embodiment of the present invention.

FIG. 2 is a block diagram showing a control circuit of the apparatus of the embodiment.

FIG. 3 is a timing chart showing a signal state in each signal line in the case of normal direction conversion in which a direction instruction signal is input a plurality of times in FIG.

FIG. 4 is a timing chart showing a signal state in each signal line when the turn signal is input once in FIG. 2 and the turn signal control device of the present invention operates.

FIG. 5 is a block diagram showing a control device of a turn signal lamp control device according to a second exemplary embodiment of the present invention.

FIG. 6 is a flowchart showing a processing procedure of a CPU used in the apparatus of the embodiment.

FIG. 7 is a timing chart illustrating a case where a direction instruction signal is input a plurality of times to change the direction in the apparatus of the embodiment.

FIG. 8 is a timing chart illustrating a case where a turn signal is input once and all turn lamps flash at the same time in the apparatus of the embodiment.

FIG. 9 is a block diagram showing a control device of a turn signal lamp control device according to a third embodiment.

10 is a timing chart showing a signal state in each signal line when a direction indicating signal is input a plurality of times in FIG. 9 to change the direction.

FIG. 11 is a timing chart showing a signal state in each signal line when a direction indicating signal is inputted once in FIG. 9 and all the direction indicating lamps blink at the same time.

[Explanation of symbols]

20 ... Control device 30R, 30L ... Clip 40 ... Power plug outlet 50 ... Operation confirmation lamp 100 ... Direction indicator lamp Controller L _D ... Power supply line L _S ... Signal input line

Claims (4)

(57) [Claims] 1. An on / off signal (S _R, S _L ) having a predetermined cycle for lighting a turn indicator lamp (L _L, L _R ) of a vehicle.
Detecting means (30L, 30R, L _S ) for detecting the above, and when only one ON / OFF signal is detected by the detecting means within a predetermined time, all the direction indicator lamps (L _L, L _R ) for a predetermined time Control means for driving blinking (2
0) and a turn signal lamp controller (100). 2. The turn signal lamp control device according to claim 1, wherein the control means counts the time in synchronization with a level transition of an on / off signal having a predetermined cycle for blinking the turn signal lamp of the vehicle. And a timer for counting a first predetermined time longer than one cycle of the on / off signal and shorter than two cycles, resetting and restarting the time measurement at each level transition time of the on / off signal. , A first timer (23) that outputs a duration signal (B, E) indicating a duration during which the ON / OFF signal is continuously output, and a start time that the duration signal (B) starts And resets and starts time counting, and measures a second predetermined time that is longer than the first predetermined time of the first timer and shorter than two cycles of the on / off signal and before the start of the continuation period. The second timer (24) that outputs the determination reference signal (D) indicating the determination reference time when the second predetermined time has elapsed, the duration signal (E) and the determination reference signal are input, and At the time of the judgment reference, when the continuation period has ended, the signal output means (25, 25) for outputting the display signal (H) for blinking the direction indicator lamp for a predetermined time.
26, 28, 29, 30). 3. The direction indicator lamp control device according to claim 1, wherein the control means measures a time longer than one cycle of the on / off signal and shorter than two cycles as a predetermined time, and at the same time, the on / off. Timer means for starting timekeeping in synchronization with the level transition of the signal, resetting and restarting the timekeeping at each time of the level transition of the on / off signal, and defining a duration for which the on / off signal is continuously output (322, 324, 2
30), and level transition detection means for detecting the level transition of the on / off signal during the time counting by the timer means (3)
22, 324, 240), when the predetermined time has elapsed without the level transition being detected by the level transition detection means, a predetermined display signal (Z, H) for driving all the direction indicator lamps to blink. Signal output means (322, 250,
260, 31, 32, 33). 4. The direction indicator lamp control device according to claim 1, wherein the control unit detects a period of a level transition of an on / off signal for blinking a direction indicator lamp of the vehicle.
324, 280, 290), and a time longer than one cycle of the on / off signal detected by the cycle detection means and shorter than two cycles as a predetermined time, and in synchronization with the level transition of the on / off signal. Timer means (322, 324, 230) for resetting and restarting clocking at each level transition time of the on / off signal, and defining a continuation period during which the on / off signal is continuously output. (3) level transition detection means for detecting the level transition of the on / off signal during the time counting by the timer means;
22, 324, 240), when the predetermined time has elapsed without the level transition being detected by the level transition detection means, a predetermined display signal (Z, H) for driving all the direction indicator lamps to blink. Signal output means (322, 250,
260, 31, 32, 33).