JPH11348653A - Direction indicator lighting circuit for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a direction indicator lighting circuit for a vehicle which can be realized in a simple and low cost structure without making a winker relay and a hazard relay synchronous. SOLUTION: The power source terminal of a winker relay 7, and the earthing terminal of a hazard relay 81, are connected to the downstream side of a load releasing switch 1. The hazard switch 81 is connected to warning lamps 56 and 57 through a hazard switch 2, and diodes 58 and 59. When a winker SW 77 is operated, a pulse is output from the winker relay 71, and one side of the warning lamps 56 and 57 is driven to flash. And when a hazard SW is turned ON, the load releasing switch 1 is turned OFF, the driving circuit of the hazard relay 81 is earthed, and a pulse line is output from the hazard relay 81. As a result, the warning lamps 65 and 67 are flashed simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular turn signal lighting circuit, and more particularly to a vehicular turn signal lighting device having a simple and inexpensive configuration and having a predetermined operation without influence of blinker blinking and hazard blinking. The present invention relates to a turn signal lighting circuit.

[0002]

2. Description of the Related Art A motorcycle such as a motorcycle is provided with a hazard circuit that simultaneously blinks lamps mounted on the front, rear, left and right of the vehicle when an emergency stop or the like is performed (for example, Japanese Patent Publication No. 59-9377). reference). In some vehicles, a position lamp that is lit in all running states is provided in the width direction of the vehicle. In many cases, the position lamp is provided together with a blinker lamp in a blinker (for example, Japanese Patent Publication No. No. 15138).

In a vehicle equipped with a lamp indicating a hazard, a blinker, and a position as described above, the same lamp is commonly used for the lamp for the hazard and the blinker. Kosho 59
It is driven by a circuit as shown in FIG. In this device, a dual switch (hereinafter, referred to as a double switch)
FIG. 3 shows a circuit in which a switch is replaced by one circuit SW and two commutators in order to reduce the cost.

When the power supply voltage is applied to the hazard blinker relay 51 and the drive circuit thereof is grounded, the relay contacts are turned on and off with a preset time constant. Hazard S
W52 and the first position SW53 are formed by a double switch, and when one is closed, the other is open. In the normal running state, the first position SW53
Is in the ON state, and the movable contact of the blinker SW54 is at the middle point.
And L are in contact with both position lamps 60, 6
1 is lit. Now, assuming that the turn signal SW54 is connected to the L contact point because the vehicle turns to the left,
The second position SW55 is connected to the fixed contact R only and is not connected to the fixed contact L as shown in the figure. As a result, the left warning lamp 56 blinks, and the left position lamp 60 is turned off. On the other hand, the position lamp 61 on the right side maintains the lighting state.

Next, when the hazard SW 52 is turned on for emergency stop of the vehicle at the road edge or the like, the pulse train output from the hazard blinker relay 51 is a diode 5
8 and 59, left and right warning lamps 56 and 57
At the same time, and the left and right warning lamps 56,
57 flashes simultaneously. At this time, the first position SW
53 is turned off, and the position lamps 60 and 61 are turned off.

In the above circuit, it is not necessary to synchronize the blinker and the hazard. However, the blinker does not automatically return after the vehicle turns a corner, which is inconvenient for the driver.

On the other hand, as a circuit for automatically returning the blinker after the cornering is over, Japanese Patent Publication No. 4-1513
No. 8 has been proposed as shown in FIG. FIG. 4 shows an equivalent circuit obtained by redrawing FIG. 2 of the publication for comparison with FIG. In the figure, FIG.
The same reference numerals indicate the same or equivalent.

When the winker SW 77 is connected to the L contact to turn the vehicle, for example, to the left, the win cassette off SW 73 contacts the left set contact. Then,
The set signal enters the automatic blinker return (automatic blinker cancel) circuit 72, whereby the MPU 72a outputs a signal for turning on the transistor 72b. When the transistor 72b is turned on, the drive circuit of the turn signal relay 71 is grounded, and the turn signal relay 71 is activated. Therefore, a pulse signal having a predetermined duty is continuously output from the winker relay 71, and the warning lamp 56 blinks.

Next, when the MPU 72a detects that the vehicle has turned the corner based on the speed pulse signal from the speedometer 74 or the angle signal from the angle sensor 75, the MPU 72a outputs a signal for turning off the transistor 72b. Output. Then, the drive circuit of the turn signal relay 71 is not grounded, and stops operating. As a result, the blinking of the warning lamp 56 automatically stops. The position relay 76 is off during normal running, and its contact is closed. Therefore, the position lamps 60 and 61 are turned on regardless of the position of the movable contact of the second position SW55. When the blinker is activated, the position relay 76
Is turned on and its contact is opened, so that the blinking blinker lamp and the position lamp provided in parallel are turned off as described above.

[0010] However, this circuit has a problem that no special consideration is given to the hazard circuit. Therefore, FIG. 5 shows a configuration in which a hazard relay is added to the configuration shown in FIG. 5, reference numeral 81 denotes a hazard relay, reference numeral 82 denotes a hazard SW, reference numeral 83 denotes a synchronous short-circuit relay, and other reference numerals indicate the same as or equivalent to those in FIGS.

In this proposed example, two relays, a blinker relay 71 and a hazard relay 81, are used, and when the hazard lamp blinks, the hazard SW 82 is turned on. Then, the drive circuit of the hazard relay 81 is grounded, and the hazard relay 81 outputs a pulse train having a duty determined by a preset time constant. Also,
The synchronous short-circuit relay 83 operates to short-circuit both contacts. Therefore, the pulse train output from the hazard relay 81 is simultaneously input to the warning lamps 56 and 57, and the warning lamps 56 and 57 blink at the same time. The automatic return operation of the blinker is the same as that of FIG.

If the hazard is activated while the blinker is operating and the pulse trains output from the blinker relay 71 and the hazard relay 81 are not synchronized, the warning lamps 56 and 57 do not blink at a predetermined cycle, and The diodes 58 and 59 in FIG.

[0013]

However, in this proposed example, since the synchronous short relay 83 is used, the cost required to realize the circuit is high.
In addition, there is a problem that the blinker relay 71 and the hazard relay 81 may operate simultaneously. SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicular turning indicator lighting circuit which can solve the above-mentioned problems of the prior art and can be realized with a simple and inexpensive configuration. Another object of the present invention is to provide a vehicular turning indicator lighting circuit that does not require simultaneous operation of a blinker relay and a hazard relay and does not need to synchronize with a pulse train output therefrom.

[0014]

As is apparent from the above description, according to the present invention, a blinker relay and a hazard relay with a ground terminal and at least two warning lamps provided on both sides in the width direction of the vehicle are provided. A blinker switch for connecting the blinker relay to a warning lamp on the side on which the closing operation is performed to blink the warning lamp; a hazard switch for connecting the at least two warning lamps to a hazard relay to blink when the closing operation is performed; In a vehicle turn signal lighting circuit including a load release switch for releasing a predetermined resistance load from a power supply in conjunction with a switch closing operation, a power supply terminal of the blinker relay is provided downstream of the resistance load release switch. It is characterized in that it is connected to the ground terminal of the hazard relay. According to this feature, when one of the winker relay and the hazard relay is operating, the other can be disabled, so that it is not necessary to synchronize the winker relay and the hazard relay.

According to the present invention, the at least two
It is characterized in that two rectifiers whose cathodes are connected to each other are connected between the warning lamps, and the hazard switch is connected to the cathode connection point of the rectifier. According to this feature, the circuit can be realized using an inexpensive rectifying element without using the expensive short-circuit relay for synchronization included in the circuit of FIG.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a circuit diagram showing a configuration of one embodiment of the present invention. In this embodiment, a normally closed load release switch (SW) 1 is provided between the power supply and the second position SW 55, and the hazard relay 81 and a rectifying element, for example, a midpoint between the diodes 58 and 59. A normally-open (normally-off) hazard switch (SW) 2 is provided between the two switches. The load release SW1 and the hazard SW2 form a double switch. The winker SW 77, the second position SW 55, and the win cassette off SW 73 constitute a triple switch. The blinker SW77 is a switch having no contact at the middle point.

The power supply terminal of the blinker relay 71 and the ground terminal of the hazard relay 81 are connected to the downstream side of the fixed contact 1a of the load release SW1. The hazard relay 81 is connected to the midpoint between the diodes 58 and 59 via the hazard SW2. In addition, the same code | symbol as FIG. 3-FIG. 5 shows the same or equivalent thing as the thing of the same code | symbol of FIG. The other circuit configuration of FIG. 1 is the same as the circuit configuration of FIG.

FIG. 2 is a circuit diagram showing a specific example of the blinker relay 71 and the hazard relay 81. Each of the relays 71 and 81 includes an oscillation circuit 21 and a switch section 22. The oscillation circuit 21 starts operating when connected to a power supply and a ground. The oscillation circuit 21 oscillates at a frequency determined by a predetermined time constant, and turns on and off the switch unit 22. Therefore, a pulse train having a predetermined duty is output from the switch unit 22.

Next, the operation of the present embodiment will be described with reference to FIG. When the vehicle attempts to turn to the left, for example, when the winker SW 77 is brought into contact with the L contact, the movable contact of the win cassette off SW 73 comes into contact with the set contact, and the set signal is input to the automatic winker return circuit 72. Then, since MPU 72a outputs a signal for turning on transistor 72b, the drive circuit of blinker relay 71 is grounded, and blinker relay 71 outputs a pulse train with a predetermined duty. As a result, the pulse train is supplied to the left warning lamp 56, and the warning lamp 5
6 blinks.

When the vehicle turns around the corner, the MPU 72a of the automatic blinker return circuit 72 outputs a signal for turning off the transistor 72b according to a speed pulse output from the speedometer 74 and / or a detection signal from the angle sensor 75. . As a result, the operation of the blinker relay 71 automatically stops. Obviously, the same operation as described above is performed when the winker is operated to turn right.

When the driver manually pushes the win cassette off SW 73 in the direction of arrow a to bring the movable contact into contact with the off contact, an off signal enters the automatic blinker return circuit 72, and the MPU 72a turns off the transistor 72b. . In this way, the blinker can be returned manually. The position relay 76 is off during normal running, and its contact is closed. Therefore, the position lamps 60 and 61 are turned on regardless of the position of the movable contact of the second position SW55. When the blinker is activated, the position relay 76 is turned on and its contact is opened, so that the blinking blinker lamp and the position lamp attached thereto are turned off as described above.

Next, when the hazard is turned on, the load release SW1 is turned off and the hazard SW2 is turned on. Then, since the load release SW1 is turned off, the blinker relay 71 is disconnected from the power supply and stops operating. Further, the supply of power to the position lamps 60 and 61 is shut off. Therefore, the blinker blinks and the position lamps 60 and 61 are turned off. On the other hand, the drive circuit of the hazard relay 81 is grounded via the second position SW 55 and the position lamp 60 or 61. Therefore, the hazard relay 81 operates and outputs a pulse train having a predetermined duty. The pulse train passes through the diodes 58 and 59 via the hazard SW2 and is simultaneously supplied to the left and right warning lamps 56 and 57. As a result, the warning lamps 56 and 57 blink.

According to the present embodiment, as in the proposed circuit of FIG.
Since the circuits 8 and 59 are used, the circuit can be configured simply and inexpensively. Further, when the hazard is turned on while the blinker is operating, the load release SW1 is turned off as described above, so that the blinker relay 71 is disconnected from the power supply and stops operating. Further, the supply of power to the position lamps 60 and 61 is shut off. Therefore, the blinker blinks and the position lamps 60 and 61 are turned off. On the other hand, the hazard relay 81 operates, and the right and left warning lamps 56 and 57 are simultaneously energized through the hazard SW2 and the diodes 58 and 59, so that it is not necessary to synchronize the blinker of the blinker and the blink of the hazard. Further, the present invention was able to be realized without increasing the number of interlocking of the switch circuits.

[0024]

As is apparent from the above description, according to the first aspect of the present invention, when one of the blinker relay and the hazard relay is operating, the other can be completely disabled. Therefore, there is an effect that it is not necessary to synchronize the blinker relay and the hazard relay.

According to the second aspect of the present invention, the position lamp is opened from the power supply and turned off in conjunction with the closing operation of the hazard switch.
There is an effect that blinking of the warning lamps can be clearly seen.

According to the third aspect of the present invention, the expensive short-circuit relay for synchronization is eliminated, and two inexpensive rectifying elements having cathodes connected to each other are connected between at least two warning lamps. Therefore, there is an effect that an inexpensive vehicle turn signal lighting circuit can be provided.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a circuit diagram showing a specific example of a blinker relay and a hazard relay.

FIG. 3 is a circuit diagram showing an example of a conventional blinker hazard circuit.

FIG. 4 is a circuit diagram showing an example of a conventional blinker circuit with an automatic return function.

FIG. 5 is a circuit diagram showing an example of a conventional blinker circuit with a hazard function.

[Explanation of symbols]

1 ... Load release SW, 2 ... Hazard SW, 55 ... Second position SW, 56, 57 ... Warning lamp, 5
8, 59: diode, 60, 61: position lamp, 71: blinker relay, 72: automatic blinker return circuit, 73: win cassette off SW, 74: speedometer, 7
5: Angle sensor, 76: Synchronous short relay, 77: blinker SW, 81: Hazard relay.

Claims (3)

[Claims] 1. A blinker relay having a ground terminal and a hazard relay, at least two warning lamps provided on both sides in the width direction of the vehicle, and the blinker relay connected to a warning lamp on a closing operation side. A blinker switch for turning on, a hazard switch for connecting the at least two warning lamps to a hazard relay by a closing operation to blink, and a load for releasing a predetermined resistance load from a power supply in conjunction with the closing operation of the hazard switch. A vehicle direction indicator lighting circuit including an open switch, wherein a power terminal of the blinker relay and a ground terminal of the hazard relay are connected downstream of the load open switch. Lighting circuit. 2. The vehicular turning indicator lighting circuit according to claim 1, wherein the predetermined load is a position lamp. 3. The vehicular turning indicator lighting circuit according to claim 1, wherein two rectifying elements each having a cathode connected to each other are connected between the at least two warning lamps, and the hazard switch is turned on. A vehicular turning indicator lighting circuit, which is connected to a cathode connection point of the rectifying element.