JPS6040347Y2 - Left turn accident prevention warning device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing accidents by sounding a buzzer to attract the attention of passersby when a vehicle turns left.

Devices that issue warnings to prevent left-turn accidents have been proposed in the past, but this device connects a warning buzzer to the turn signal lamp circuit, and the circuit is configured so that the buzzer does not sound when a hazard is used. However, it has the following drawbacks.

The first problem is that the alarm buzzer sounds even when the vehicle is not running, such as when the vehicle is parked.

The second problem is that the vehicle also makes a loud noise when turning left when driving at night.

These problems not only cause noise at night, but also pose a problem in the durability of the buzzer, as the buzzer often sounds.

The present invention was obtained in order to eliminate the drawbacks of the conventional devices described above, and provides a device configured so that an alarm buzzer sounds under the following conditions.

A. The left flasher switch is ON. B. When the vehicle is running, C. The lighting switch is OFF. The configuration of this invention to achieve the above purpose is to connect the left and right flasher lamp circuits and connect the alarm buzzer and controller in series. The controller has a relay that opens in response to a signal from the speed sensor or lighting circuit, and this relay connects the right flasher lamp via the alarm buzzer from the left flasher lamp circuit. This left turn accident warning device is characterized in that it comprises a circuit that energizes the circuit, and that this circuit is configured to operate only when a left turn is made while driving when the lights are off.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic circuit diagram showing the configuration of the present invention, in which a battery 1, a fuse 2, a Hubbard unit 3, and a hubbard switch 4 are connected to a flasher lamp 5 on the right side. , Fuyuse 7,
Turn signal unit 8, turn signal switch 9
It is connected to the flasher lamp 10 on the left side via.

This circuit is similar to conventional circuits.

The feature of the present invention is that an alarm buzzer 20 and a controller 21 are connected in series between the circuit connecting the turn signal switch 9 and the flasher lamp 5 on the right side and the circuit connecting the turn signal switch 9 and the flasher lamp 10 on the left side. A speed sensor, such as a vehicle speed sensor 22, is connected between the controller 21 and the ground, and the controller 21 is connected to the lighting circuit (tail).

FIG. 2 is a circuit diagram of the controller 21, in which a signal from the vehicle speed sensor 22 is supplied to a comparator 23, and this comparator 2
3 is connected to the left flasher lamp 1 via a resistor 24.
0 and a reference voltage 25 is applied.

One end of 26 is connected to the lighting 1-stage (tail) circuit, and the other end is connected to an OR circuit 27 together with the output of the comparator 23, and an example output of this is connected to a relay 29.

The connection connected to the flasher 10 on the left is diode 2.
8, is connected to the flasher lamp 5 on the right side via a relay 29 and an alarm buzzer 30.

Further, the controller 21 is configured to operate as follows.

(1) Vehicle speed sensor 22 (
Compare the ON/OFF signal of the speedometer or transmission) with the reference voltage 25, and set the comparator 23 to be ON when the vehicle is stopped and OFF when the vehicle is moving. are doing.

(2) Lighting switch circuit signal processing Potential signal of lighting 1-stage circuit (tail lamp circuit) (e.g. 12
V or QV) and guides it to the OR circuit 27.

(3) When the output of the circuit comparator 23 is OFF and the lighting circuit (tail) is OFF, the output of the OR circuit 27 is OFF,
When either the comparator 23 or the lighting circuit is ON, the output of the OR circuit 27 is ON and drives the relay 29 (the relay circuit is OFF).

(4) The relay contact operates ON when the excitation coil is not energized and OFF when energized.

Next, the operation of the apparatus shown in FIGS. 1 and 2 will be explained.

During daytime driving When the vehicle is traveling with the daytime lighting switch in the OFF state, there is no circuit output from the OR circuit 27 of the controller 21, and the contact of the relay 29 is in the ON state.

Therefore, turn the turn signal switch 9 to the left (O
N) Then, the alarm buzzer 20 sounds using the right flasher lamp 10 as a ground circuit.

When the turn signal switch 9 is turned off, the alarm buzzer 20 stops sounding.

Also, turn the turn signal switch 9 to the right side (ON)
Then, the current in the buzzer circuit is cut off by the diode 28 inside the controller 21, so the buzzer 20 does not sound.

When the lights are turned on at night when driving at night, the signal from the lighting circuit 26 is applied to the OR circuit 27, so the output of the OR circuit 27 operates the relay 29 and turns it off.

Therefore, even if you make a left turn when the light is on, the alarm buzzer 2
0 does not sound.

When parking When parking, the right and left flasher lamps 5.10 are turned on at the same time, so both ends of the circuit of the alarm buzzer 20 and controller 21, which are provided by connecting the circuits of both lamps, are at the same potential, and the circuit No current flows through the alarm buzzer 20.
does not sound.

As detailed above, the present invention configures the controller 21 so that the circuit of the relay 29 is turned off by either the signal from the vehicle speed sensor 22 or the signal from the first-stage lighting (tail) circuit 26. Since the alarm buzzer 20 and the controller 21 are installed in series so as to connect the left and right flasher lamps 5 and 10, the alarm buzzer 20 is sounded only when the vehicle is running and turns left during daytime to prevent an accident. This can be prevented.

Therefore, while driving at night or parking, the visual alarm buzzer 20
Since it does not blow, there is no risk of unnecessarily generating noise.

Note that an engine rotation sensor may be used instead of the vehicle speed sensor in the above embodiment, and in this case, a warning can be issued even when the vehicle is temporarily stopped when turning left, thereby further increasing safety.

[Brief explanation of the drawing]

Figure 1 is a schematic circuit diagram of the left turn accident prevention warning device of the present invention.
FIG. 2 is a circuit diagram of a controller etc. incorporated in the device of FIG. 1.

Claims (1)

[Scope of utility model registration request] The left and right flasher lamp circuits are connected to create a series circuit of the alarm buzzer and the controller.
It has a relay that opens in response to a signal from the speed sensor or lighting circuit, and this relay constitutes a circuit that energizes the right flasher lamp circuit from the left flasher lamp circuit via an alarm buzzer. A left turn accident prevention/warning device, characterized in that this circuit is configured to operate only when a left turn is made while driving with the lights off.