JPH0558218A - Rear-end collision preventing system - Google Patents

Abstract

PURPOSE:To prevent a rear-end collision caused by the fact that the state is unknown before the brake pedal is depressed. CONSTITUTION:A blue-color lamp 3 is lighted during acceleration and high speed traveling, a yellow-color lamp 4 is lighted when the speed is reduced by 5km/h and the speed is 20km/h or lower, and a red lamp 5 is lighted when the brake pedal 7 is depressed. Thus, since the operating state of a preceding vehicle is found by lighting of the yellow-color lamp 4, the timing of braking of a following vehicle is not delayed. This system is especially effective for preventing the rear-end collision at the time of high speed traveling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear-end collision prevention system for automobiles and motorcycles.

[0002]

2. Description of the Related Art As a rear-end collision prevention device for automobiles, a brake lamp is mainly lit and other accessory lamps are generally attached.

[0003]

However, since the brake lamp only lights red when the brake is applied,
There are the following problems.

A. Since there are individual differences in brake operation, it may not be possible to make the brakes depending on the speed if the brakes are applied after checking the brake lights of the car ahead.

B. When driving a car, predict the danger ahead, or take your foot off the accelerator pedal for other reasons,
You may be seeing the situation before you release the accelerator and start braking. Since the state of the preceding vehicle is often unknown to the following vehicle, the timing of shifting to the braking of the following vehicle may be delayed especially on an expressway. These things run the risk of a rear-end collision.

[0006] An object of the present invention is to provide a system for preventing a rear-end collision accident by allowing the following vehicle to know the operation especially before shifting to the braking by a lamp display.

[0007]

The rear-end collision prevention system according to the present invention is as follows.

A blue, yellow, and red three-color lamp that can be seen from the rear vehicle is attached to the rear of the automobile or motorcycle,
Among the three-color lamps, the blue lamp is lit during acceleration and parallel speed, the yellow lamp is lit during natural deceleration, and the red lamp is lit when decelerated below a certain speed and when the brake pedal is depressed. A rear-end collision prevention system having a control circuit for lighting.

[0009]

[Function] As long as the driver depresses the accelerator pedal while driving, the blue lamp is lit and the blue lamp is visible from the following vehicle, so there is no danger of sudden braking in the preceding vehicle. You can judge that.

Next, when the driver releases the accelerator pedal and the speed is reduced from, for example, 90 km / h to 85 km / h by natural deceleration, the yellow lamp is turned on. As a result,
It is possible to judge that there is a possibility that braking will occur from the following vehicle, and as a result, you can be careful, that is, you can prepare to step on the brake pedal.

Next, since the speed is such that the vehicle can be suddenly stopped by braking when the speed is 20 km / h or less due to natural deceleration, the yellow lamp is unconditionally turned on in this case.

Next, when the brake pedal is depressed, the red lamp is turned on in any case.

From the above lamp indication, unless the brake lamp is lit up until now, it is not known whether or not the vehicle in front is in a braking posture. Compared with the conventional example in which the timing of braking is predicted, the specific action can be surely understood, so that an accident in which a rear-end collision occurs with a delayed timing of braking can be prevented.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 designates an automobile, and 2 designates a display portion comprising a blue lamp 3, a yellow lamp 4 and a red lamp 5 attached to the rear portion of the automobile 1, and this display portion 2
The lamp is lighted by the control circuit 8 under the following conditions from the speed signal from the speedometer 6 and the operation state signal of the accelerator pedal 7 shown in FIG.

A. The accelerator pedal 7 is depressed and the blue lamp 3 is lit during acceleration and parallel speed running.

B. The yellow lamp 4 is lit when the vehicle is running away from the accelerator pedal 7 and the traveling speed drops by 5 km / h, or when the traveling speed of the automobile 1 is 20 km / h or less.
The blue lamp 3 is lit until the yellow lamp 4 is lit. However, it does not light during acceleration.

C. When braking is performed, the red lamp 5 lights up and the other lamps go out.

In the embodiment, the speed is input from the speedometer 6 to the control circuit 8 and the operation state of the accelerator pedal is detected from the accelerator pedal 7 and input.
Other means may be used.

[0019]

As described above, the present invention has the following effects because the driver of the following vehicle can understand the behavior of the vehicle before the braking operation, in addition to the operation of the brake pedal.

A. If there is time before you release your foot from the accelerator pedal and press the brake pedal, this time will be displayed with a yellow lamp, so the following driver will be able to see if this yellow lamp is present and the braking may be performed. Can be predicted. As a result, the timing of braking will not be delayed and a rear-end collision will not occur.

B. For example, if the speed drops from parallel speed to 5 km / h, the yellow lamp will light up, so the driver in front of the vehicle may predict the danger and take his foot off the accelerator pedal.
Subsequent drivers can see the situation. As a result,
It is especially effective in preventing rear-end collisions when traveling at high speed.

C. It is also useful as a car accessory.

[Brief description of drawings]

FIG. 1 is a front view showing a rear portion of an automobile to which a system of the present invention is attached.

FIG. 2 is an explanatory diagram of a system.

[Explanation of symbols]

 1 Car 2 Display 3 Blue lamp 4 Yellow lamp 5 Red lamp 6 Speedometer 7 Accelerator pedal 8 Control circuit

Claims (1)

[Claims] 1. A three-color lamp of blue, yellow, and red that can be visually recognized from a rear vehicle is attached to a rear portion of an automobile or a motorcycle, and among the three-color lamps, a blue lamp is lit at acceleration and parallel speed, and the yellow lamp is Lights up during natural deceleration,
The red lamp is a rear-end collision prevention system with a control circuit that lights up when the vehicle decelerates below a certain speed and when the brake pedal is pressed.