JPH0125063Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is an improvement of a hazard warning device that lights up a hazard indicator lamp together with the left and right turn signal indicator lamps in the event of parking failure, etc., to warn occupants. This invention relates to improvements in lamp lighting circuits for lamps.

Conventionally, this type of hazard warning device has been installed in automobiles.It gives a warning by flashing the left and right turn signal lamps on the outside of the car, and at the same time gives a warning by flashing the left and right turn signal lamps inside the car. A warning is given to the occupants by flashing the signal indicator lamp and the hazard indicator lamp. This type of hazard warning device has conventionally been provided in a form attached to a lighting circuit for left and right turn signal lamps and corresponding left and right turn signal indicator lamps. That is,
In the event of a parking breakdown, etc., switch the four hazard switches 1 in the direction shown by the arrows as shown in Figure 1 to place the left and right turn signal lamps 2, 3 and the meter case 4 inside the meter case. The left and right turn signal indicator lamps 5 and 6 and the hazard indicator lamp 7 are directly connected to a battery 9 via a flasher unit 8. As a result, all of the lamps 2, 3, 5, 6, and 7 are flashed by the flasher unit 8 to warn of hazards both outside and inside the vehicle.

However, in the conventional hazard warning device described above, it is necessary to provide four switches as the hazard switch 1, which complicates the structure of the switch itself. Since the harness 10 for connection is required separately from the harnesses for the turn signal lamps 2 and 3 and the turn signal indicator lamps 5 and 6, there is a drawback that the connection relationship becomes complicated.

The present invention has been made to solve these conventional problems, and includes simplifying the structure of the hazard switch itself and providing a special harness between the hazard indicator lamp inside the meter case and the hazard switch. The purpose of the present invention is to provide a hazard warning device with a simple structure that does not require the following.

Therefore, in the present invention, an in-vehicle power supply whose one end is grounded, a flasher unit that periodically turns on and off the current drawn from the other end of the in-vehicle power supply, and a movable contact on the output side of this flasher unit are used. and a turn signal switch in which the movable contact is connected to a left turn side fixed contact and a right turn side fixed contact in response to a left turn operation and a right turn operation, respectively, and a hazard having two switching operation positions, a normal position and a hazard position. A switch, left and right turn signal lamps, a left turn signal indicator lamp whose one end and the other end are connected to both ends of the left turn signal lamp, and the other end is grounded, and a right turn signal lamp. a right-hand turn signal indicator lamp, which has one end and the other end connected to both ends thereof, and the other end is grounded; and a hazard indicator lamp, which is arranged in the meter case together with the left-hand and right-hand turn signal indicator lamps. In the hazard warning device, the hazard switch is a first switch that switches between connecting the input side of the flasher unit to the power source through an ignition switch or directly to the power source in the normal position and the hazard position, respectively. and a second switch that switches the one end of the left turn signal indicator lamp to the left turn side fixed contact of the turn signal switch and the output side of the flasher unit at the normal position and the hazard position, respectively; A third switch is provided for switching the one end of the right turn signal indicator lamp to the right turn side fixed contact of the turn signal switch and the output side of the flasher unit, and when the hazard switch is switched to the hazard position, the left side The on/off signal for the flasher unit is input from one end of the turn signal indicator lamp and the one end of the left turn signal indicator lamp, respectively, and the on/off signal is input from one end of each of the left and right turn signal indicator lamps. The present invention is characterized in that it includes a switch circuit that turns on and off power supply to the hazard indicator lamp in response to input of an off signal.

Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments.

In Fig. 2, reference numeral 11 is a battery as an in-vehicle power source whose one end is grounded, 12 is an ignition switch, and 13 is a hazard switch. position) and a second position (hazard position) where the battery 11 is connected to the flasher unit 14 without going through the ignition switch 12. This is a triple switch consisting of a second switch 16 and a third switch 17 that are operated in series. The second switch 16 and the third switch 17 of the hazard switch 13 are in first positions connected to the left-turn side fixed contact 18a and the right-turn side fixed contact 18b, respectively, of the turn signal switch 18 provided at the next stage of the flasher unit 14. (normal position) and a second switch directly connected to the output side of the flasher unit 14 without going through this turn signal switch.
position (hazard position). As a result, during a normal turn, for example, the turn signal switch 18
When the movable contact is connected to the left turn side fixed contact 18a, the left turn signal lamp 19 and the left turn signal indicator lamp 22 connected to the second switch 16 of the hazard switch 13 are connected to the left turn side fixed contact 18a.
will now flash to indicate the direction of the turn. Further, when the right turn side fixed contact 18b of the turn signal switch 18 is switched, the right turn signal lamp 20 and the right turn signal indicator lamp 23 connected to the third switch 17 flash to indicate the turn direction. It's getting old. Therefore, the left turn signal indicator lamp 22 has one end and the other end connected to both ends of the left turn signal lamp 19, and the other end is grounded. The one end of the left turn signal indicator lamp 22 is connected to the second switch 1 of the hazard switch 13.
6 movable contacts. Further, the right turn signal indicator lamp 23 has one end and the other end connected to both ends of the right turn signal lamp 20, respectively, and the other end is grounded. The above one end of the right turn signal indicator lamp 23 is connected to the third switch 1 of the hazard switch 13.
7 movable contacts.

On the other hand, 21 is a meter case attached to the instrument panel inside the vehicle, and this meter case 21 includes the hazard indicator lamp 24, a transistor 25, resistors 26, 27, and a diode 28 for protecting the transistor 25. A switch circuit is arranged. The emitter of the transistor 25 of this switch circuit is grounded, and the base is connected to the connection point of the resistors 26 and 27 connected in series between one end and the other end of the right turn signal indicator lamp 23. The hazard lamp 24 is connected between the collector of the transistor 25 and one end of the left turn signal indicator lamp 22, and when the hazard switch 13 is switched to the second position (hazard position), the transistor 2
Current is supplied from the flasher unit 14 to the base and collector of 5.

Next, the operation of the embodiment of the above configuration will be explained.

Now, during normal driving, the hazard switch 13 is held at the solid line position in the figure, and when the vehicle turns, for example, to the left, when the turn signal switch 18 turns on the left turn side fixed contact 18a. Correspondingly, one end of each of the left turn signal lamp 19 and the corresponding left turn signal indicator lamp 22 is connected to the output side of the flasher unit 14 via the second switch 16 of the hazard switch 13. , flashes repeatedly to notify the vehicle of a left turn. In this case, one end of each of the right turn signal indicator lamp 23 and the right turn signal lamp 20 is at ground potential because the right turn side fixed contact 18b of the turn signal switch 18 is off.
The base of the transistor 24 is also at ground potential, so the transistor 24 is always off, and the hazard indicator lamp 24 is never lit.

Similarly, the hazard switch 13 is held at the solid line position in FIG. 2, and when the turn signal switch 18 turns on its right-turn side fixed contact 18b when turning to the right, contrary to the above, the corresponding Third switch 17 of hazard switch 13
One end of each of the right turn signal lamp 20 and the corresponding right turn signal indicator lamp 23 is connected to the flasher unit 14 via the
It is connected to the output side of the vehicle and flashes repeatedly to notify the vehicle of a right turn. In this case, one end of each of the left turn signal indicator lamp 22 and the left turn signal lamp 19 is at ground potential because the left turn side fixed contact 18a of the turn signal switch 18 is off, and the collector of the transistor 24 has a voltage is not applied, the hazard indicator lamp 24 is not lit in this case as well.

On the other hand, if a malfunction occurs in the vehicle, the occupant operates the hazard switch 13 to switch from the first position to the second position, which is indicated by a solid line in FIG.
As a result, the first switch 15 connects the battery 11 to the flasher unit 14 without going through the ignition switch 12. Furthermore, by switching the second switch 16 and the third switch 17 as described above, one end of each of the left and right turn signal lamps 19 and 20 and one end of each of the left and right turn signal indicator lamps 22 and 23 in the meter case 21 are switched to the turn signal switch 18. They are directly connected to the output side of the flasher unit 14 without going through the flasher, and each flashes repeatedly at the same time to give a warning to the outside of the vehicle. At the same time,
Inside the vehicle, the meter case 21 warns you of this. In this case, one end of each of the left and right turn signal indicator lamps 22 and 23 is connected to the output side of the flasher unit 14, so the output of the flasher unit 14 is applied to the base and collector sides of the transistor 25 at the same time. Therefore, the transistor 25 is turned on and off in accordance with the on and off operations of the flasher unit 14. Therefore, the hazard indicator lamp 24 repeatedly blinks in synchronization with the left and right turn signal indicator lamps 22 and 23 due to the above-mentioned on/off operation of the transistor 25, thereby indicating to the occupants in the vehicle that a hazard is detected. Make sure that it is.

Note that in the above embodiment, although not specifically shown, a relay may be used instead of the transistor 25. In this case, the drive coil of the relay is connected to one end of each of the left and right turn signal indicator lamps 22 and 23, and the normally closed contact of the relay turns on the electricity from the flasher unit 14 to the hazard indicator lamp 24. , just turn it off. In this way, when the hazard switch 13 is switched to the hazard position, both ends of the drive coil of the relay are short-circuited, so the normally closed contact of the relay is always on, and the flasher unit 14 outputs the hazard indicator lamp 24. The hazard indicator lamp 24 will blink.

As described above, the present invention provides a switch that is activated by detecting the simultaneous lighting of the left and right turn signal indicator lamps for the hazard indicator lamps that are placed in the meter case together with the left and right turn signal indicator lamps. To provide a hazard warning device in which a circuit is provided and a hazard indicator lamp is lit together with indicator lamps for left and right turn signals in the event of a hazard by this switch circuit.

According to the present invention, it is only necessary to provide three hazard switches instead of the four switches that were conventionally required for lighting hazard indicator lamps, and in addition, the hazard switch and the hazard indicator lamp inside the meter case can be connected to each other. Therefore, it is possible to provide a hazard warning device that has a simple structure as a whole and is inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the configuration of a conventional hazard warning device, and FIG. 2 is a circuit diagram of a warning lamp lighting circuit according to an embodiment of the present invention. 11...Battery (power supply), 12...Ignition switch, 13...Hazard switch,
14... Flasher unit, 18... Turn signal switch, 19, 20... Left and right turn signal lamps, 21... Meter case, 22,
23... Indicator lamp for left and right turn signals, 24... Hazard indicator lamp,
25...Transistor, 26,27...Resistor, 2
8...Diode.

Claims (1)

[Scope of utility model registration request] A vehicle-mounted power supply 11 whose one end is grounded, a flasher unit 14 that periodically turns on and off the current taken out from the other end of the vehicle-mounted power supply, and a movable contact connected to the output side of this flasher unit. , the movable contacts change to the left-turn side fixed contact 18a and the right-turn side fixed contact 1 in response to the left-turn operation and the right-turn operation.
Turn signal switch 1 connected to 8b respectively
8, a hazard switch 13 having two switching operation positions: a normal position and a hazard position, left and right turn signal lamps 19, 20, and one end and the other end connected to both ends of the left turn signal lamp, respectively. and a left turn signal indicator lamp 22 whose other end is grounded;
A right turn signal indicator lamp 23 having one end and the other end connected to both ends of the right turn signal lamp, respectively, and the other end being grounded.
and a hazard indicator lamp 24 disposed in the meter case 21 together with the indicator lamps for the left and right turn signals, wherein the hazard switch switches the flasher at the normal position and the hazard position, respectively. A first switch 15 for switching whether the input side of the unit is connected to the power supply through the ignition switch or directly to the power supply.
and a second switch 16 that switches the one end of the left turn signal indicator lamp to the left turn side fixed contact of the turn signal switch and the output side of the flasher unit in the normal position and the hazard position, respectively, and and a third switch 17 for switching the one end of the right turn signal indicator lamp to the right turn side fixed contact of the turn signal switch and the output side of the flasher unit, and when the hazard switch is switched to the hazard position. On and off signals for the flasher unit are input from one end of the left turn signal indicator lamp and one end of the right turn signal indicator lamp, respectively, and from one end of each of the left and right turn signal indicator lamps. 1. A hazard warning device comprising a switch circuit that turns on power supply to the hazard indicator lamp by synchronously inputting an on signal of the hazard indicator lamp.