JP3148487U - Emergency braking display device - Google Patents

Abstract

In a braking circuit having a stop lamp connected in series to a brake switch and a lamp break indicator connected in parallel to the stop lamp via a vehicle body ground, it is retrofitted in series immediately before the stop lamp. Even so, an emergency braking display device is provided in which the lamp disconnection indicator does not malfunction and gives a disconnection warning. A current interrupter for interrupting a lamp current flowing through a series circuit of the brake switch and the stop lamp at the time of emergency braking, and a current interrupter connected in series to the brake switch when the lamp current is interrupted by the current interrupter. And a signal for operating the current interrupter from the output circuit when an emergency braking state is detected by the emergency braking sensor. And an emergency braking detection device that outputs [Selection] Figure 1

Description

The present invention relates to an improvement of an emergency braking display device that flashes a stop lamp or a hazard lamp during emergency braking of an automobile to indicate that the following vehicle is in an emergency braking state and to prevent a rear-end collision.

2. Description of the Related Art Conventionally, an emergency braking display device is known that flashes a vehicle light and issues a warning to a following vehicle during emergency braking of an automobile. For example, Japanese Patent Application Laid-Open No. 7-195976 discloses a braking state detection unit that detects a braking state of a vehicle body, a stop lamp that displays that the vehicle body is in a braking state, and a braking state that is detected by the braking state detection unit. A stop lamp control device for a vehicle, comprising: determination means for determining whether or not the state is sudden braking; and stop lamp driving means for causing the stop lamp to blink when the determination means determines that the braking is sudden. It is disclosed.

Japanese Patent Laid-Open No. 7-323783 discloses a vehicle stop acceleration (deceleration) and vehicle speed when sudden braking is applied, and controls the operation of a hazard lamp by comparing with a preset stop acceleration and vehicle speed. A vehicle safety device is disclosed.

Further, Japanese Patent Laid-Open No. 8-276785 provides a control circuit for inputting a detection signal for emergency braking of an automobile, an amplifying circuit for inputting a control signal output from the control circuit, and a lamp for outputting from the amplifying circuit. An emergency braking display device is disclosed that blinks at high speed synchronously for a certain period of time with a stop lamp, a rear turn signal lamp, and a backup lamp connected with a display signal.

However, since all of the above prior arts are based on the premise that the emergency braking display device is mounted on the vehicle from the beginning, when the emergency braking display device is mounted later on an existing vehicle, so-called retrofit connection. The following problems occur.

FIG. 2 shows a state in which an emergency braking detection device 4 is retrofitted between a brake switch 2 operated by the brake pedal 1 and a stop lamp 3 connected in series to the brake switch 2. Reference numeral 5 denotes a connection terminal. The emergency braking detection device 4 includes an input circuit 6, an emergency braking sensor 7, a control circuit 8, and an output circuit 9. When the emergency braking state is detected by the emergency braking sensor 7, the output circuit 9 stops the stop. A signal current 10 for blinking the lamp 3 is output. Reference numeral 11 denotes a lamp disconnection indicator connected in parallel to the stop lamp 3 via a vehicle body ground. The lamp disconnection indicator 11 detects a minute current flowing through the stop lamp 3 via the vehicle body ground when the emergency braking detection device 4 is not retrofitted, and when the minute current stops flowing, the lamp is disconnected. Judgment is made and there is a warning light.

In such a circuit configuration, when emergency braking is performed by depressing the brake pedal 1, the brake switch 2 is closed and the emergency braking detection device 4 operates and outputs a signal current 10 from the output circuit 9. Flashes and indicates that it is in an emergency braking state.

However, in the circuit, since the resistance component of the emergency braking detection device 4 connected in front of the stop lamp 3 is high, the minute current flowing in the lamp disconnection indicator 11 does not flow, and the warning light of the lamp disconnection indicator 11 is There is a drawback that the lamp is always lit regardless of whether or not the lamp is disconnected.
JP-A-7-195976 JP-A-7-323783 JP-A-8-276785

The present invention is to provide an emergency braking display device that does not cause a disconnection warning due to a malfunction of the lamp disconnection indicator even if it is retrofitted between the brake switch and the lamp disconnection indicator and the stop lamp. It is what.

The present invention includes a brake switch operated by a brake pedal, a stop lamp connected in series to the brake switch, and a lamp break detector connected in parallel to the stop lamp (via a vehicle body ground). An emergency braking display device retrofitted between the brake switch and the stop lamp having a circuit configuration comprising: a current that intermittently interrupts a lamp current flowing through a series circuit of the brake switch and the stop lamp during emergency braking An interrupter, a pseudo lamp resistor connected in series to the brake switch when the lamp current is interrupted by the current interrupter, an input circuit, an emergency braking sensor, a control circuit, and an output circuit, From the output circuit when an emergency braking state is detected by the emergency braking sensor Emergency brake detecting device for outputting a signal for operating the serial current interrupter, characterized by comprising a.

That is, the present invention provides a current interrupter for interrupting the lamp lighting current flowing in the existing vehicle wiring, and adds a circuit of a pseudo lamp resistor attached to the current interrupter together with a circuit for blinking the stop lamp. Therefore, the minute current that flows through the vehicle body ground can flow either as a stop lamp or a pseudo lamp resistor, so that the minute current that flows to the lamp break indicator is almost uninterrupted, and the lamp break indication is displayed. This is intended to prevent the device from malfunctioning.

The present invention also provides a brake switch operated by a brake pedal, a stop lamp connected in series to the brake switch, and a lamp disconnection detection connected in parallel to the stop lamp (via a vehicle body ground). An emergency braking display device that is retrofitted between the brake switch and the stop lamp having a circuit configuration, and interrupts the lamp current flowing through the series circuit of the brake switch and the stop lamp during emergency braking. A current interrupter, an input circuit, an emergency braking sensor, a control circuit, and an output circuit. A signal for operating the current interrupter from the output circuit when an emergency braking state is detected by the emergency braking sensor. And an emergency braking detection device for outputting.

That is, according to the present invention, a minute current flowing through the vehicle body ground is caused to flow through the lamp disconnection indicator at least when the stop lamp is turned on to prevent the lamp disconnection indicator from malfunctioning. According to this means, at the moment when the lamp current is interrupted by the current interrupter, a minute current does not flow in the lamp disconnection indicator, and the lamp disconnection indicator repeats blinking. There is an advantage that you can know.

As the current interrupter used in the emergency braking display device of the present invention, a changeover switch or a semiconductor switch using an electromagnetic relay is suitable.

By using the present invention, an emergency braking display device that can be retrofitted can be provided, and blinking display can be accurately performed during emergency braking. Thus, it is possible to display the display without obstructing the detection of the lamp breakage without giving the person a false recognition of the lamp breakage.

Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings.

FIG. 1 shows an embodiment of an emergency braking display device according to the present invention. In the figure, 21 is a brake pedal, 22 is a brake switch operated by the brake pedal 21, 23 is a stop lamp connected in series to the brake switch 22, and 24 is parallel to the stop lamp 22 via a vehicle body ground. Lamp disconnection indicator 25, which is connected to the brake switch 22 and the stop lamp 23, is connected to the emergency brake display device 25. The emergency brake display device 25 is connected to the brake switch during emergency braking. 22, a current interrupter 26 for interrupting the lamp current flowing through the series circuit of the stop lamp 23, and a pseudo lamp resistor connected in series to the brake switch 22 when the lamp current is interrupted by the current interrupter 26. Body 27, input circuit, emergency braking sensor, control circuit and output circuit Are composed of, it contains an emergency braking detection device 28 for outputting a signal for operating the interruptor 26 from the output circuit when it detects an emergency braking state by said emergency braking sensor.

In the above configuration, when emergency braking is performed by the brake pedal 21, the brake switch 22 is closed, current is supplied to the stop lamp 23 via the current interrupter 26, and the stop lamp 22 is turned on. At the same time as emergency braking is performed, an emergency braking sensor of the emergency braking detection device 28 detects that the vehicle is in an emergency braking state, and an output that causes the current interrupter 26 to interrupt the lamp current through the output circuit of the emergency braking detection device 28. A signal is sent. As a result, the stop lamp 23 blinks and an emergency braking display is performed. In this case, when the lamp current flowing through the stop lamp 22 is interrupted by the current interrupter 26, a pseudo lamp resistor 27 is connected to the brake switch 22 in series. In this way, during emergency braking, current flows alternately through the stop lamp 22 and the pseudo lamp resistor 27. Therefore, a minute current flows through the lamp disconnection indicator 24 via the vehicle body ground, and the lamp disconnection occurs. The display 24 does not malfunction.

Even if the pseudo lamp resistor 27 is removed from the circuit shown in FIG. 1, an emergency braking display device having a special effect can be obtained. That is, a brake switch operated by a brake pedal, a stop lamp connected in series to the brake switch, and a lamp disconnection detector connected in parallel to the stop lamp (via a vehicle body ground) An emergency braking display device retrofitted between the brake switch and the stop lamp having a circuit configuration as described above, and interrupts the lamp current flowing through the series circuit of the brake switch and the stop lamp during emergency braking. And an emergency circuit for outputting a signal for operating the current interrupter from the output circuit when an emergency braking state is detected by the emergency braking sensor. And an emergency braking display device characterized by comprising a detection device. That.

In such a device, when the lamp current is interrupted by the current interrupter, a minute current will not flow to the lamp disconnection detector, but a minute current flows intermittently to the lamp disconnection detector. Therefore, there is an advantage that it can be confirmed that the vehicle is in an emergency braking state by using this.

It can be widely used not only for automobiles but also for motorcycles and other vehicles.

Circuit diagram of emergency braking display device according to the present invention Circuit diagram of emergency braking display device in conventional device

Explanation of symbols

1: Brake pedal 2: Brake switch 3: Stop lamp 4: Emergency braking detection device 5: Connection terminal 6: Input circuit 7: Emergency braking sensor 8: Control circuit 9: Output circuit 10: Output waveform 11: Lamp disconnection indicator 21 : Brake pedal 22: Brake switch 23: Stop lamp 24: Lamp break indicator 25: Emergency brake indicator 26: Current interrupter 27: Pseudo lamp resistor 28: Emergency brake detector

Claims (3)

A brake switch operated by a brake pedal;
A stop lamp connected in series to the brake switch;
A lamp break detector connected in parallel (via the vehicle body ground) to the stop lamp;
An emergency braking display device retrofitted between the brake switch and the stop lamp having a circuit configuration comprising:
A current interrupter for interrupting a lamp current flowing through a series circuit of the brake switch and the stop lamp during emergency braking;
A pseudo lamp resistor connected in series with the brake switch when a lamp current is interrupted by the current interrupter;
An emergency braking detection device comprising an input circuit, an emergency braking sensor, a control circuit, and an output circuit, and outputting a signal for operating the current interrupter from the output circuit when an emergency braking state is detected by the emergency braking sensor When,
An emergency braking display device comprising: A brake switch operated by a brake pedal;
A stop lamp connected in series to the brake switch;
A lamp break detector connected in parallel (via the vehicle body ground) to the stop lamp;
An emergency braking display device retrofitted between the brake switch and the stop lamp having a circuit configuration comprising:
A current interrupter for interrupting a lamp current flowing through a series circuit of the brake switch and the stop lamp during emergency braking;
An emergency braking detection device comprising an input circuit, an emergency braking sensor, a control circuit, and an output circuit, and outputting a signal for operating the current interrupter from the output circuit when an emergency braking state is detected by the emergency braking sensor When,
An emergency braking display device comprising: The emergency brake display device according to claim 1 or 2, wherein the current interrupter is configured by an electromagnetic relay switch or a semiconductor switch.

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