JPS61175138A - Indicator in automobile - Google Patents

Abstract

PURPOSE:To provide a vehicle speed indicator by which the behind vehicle may ensure safety running and prevent an accident of tail-to-head collision, by indicating the running speed of the preceding vehicle to the following vehicle. CONSTITUTION:A running speed is detected by means of a vehicle speed sensor 2 composed of an engine speed sensor which is associated with the cable shaft of a speed meter. A processor 3 composed of a microcomputer receives the output which is the detected running speed, and computes a running speed. Then, the thus computed output signal is delivered to an indicator 5 which is arranged in the rear section of a vehicle body 1 such that its displaying surface faces rearward, through a drive device 4 associated with an indicating element. The indicator 5 comprises fluorescent character display tubes, LEDs arranged in a dot-like, segment-like or a bar graph-like pattern or a liquid crystal display, for indication.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle speed display device for an automobile, and in particular displays the vehicle speed at the rear of the automobile to notify the following vehicle of the vehicle speed to prevent rear-end collisions. It's something.

[Conventional technology]

In recent years, with the increase in the number of automobiles, traffic accidents have been occurring frequently. In particular, when many cars are traveling at high speeds, such as on expressways, rear-end collisions often occur.

Rear-end collisions can be caused by the driver's poor posture, such as drowsy driving or driving under the influence of alcohol, but rear-end collisions often occur due to insufficient following distance. .

The distance between vehicles must be set appropriately depending on the speed of the vehicle, but this must be discussed based on the relative relationship with the own troops and the vehicle in front. That is,
This value is meaningful only when the vehicle in front of the vehicle is traveling at the same speed as the vehicle in front.

However, for conventional automobiles, for example,
Publication No. 105543 describes a display device installed at the rear of the vehicle body that communicates messages to vehicles behind the vehicle and passersby, displaying messages such as "Go first" and "Let's take a slow run," but when the vehicle in front is running. There is no device to notify the following vehicle of speed, and there are only three devices to notify the driving condition: brake lights, direction indicators, and emergency flashing indicators, and the vehicle distance can be determined according to the speed. Unfortunately, there was very little information available.

First, it is difficult for automobiles to travel at a constant speed unless they are equipped with a special device (such as a constant-speed driving device), and the vehicle speed is considered to be constantly changing. When driving behind a car whose speed is constantly changing, the above-mentioned conventional device alone is not sufficient to maintain an appropriate following distance, and there are situations where a dangerous following distance can be reached in an instant. Occurred.

[Problems to be solved by the invention] As mentioned above, the automobiles of the United States and the United States do not have a device that informs the following vehicles of their own traveling speed, and it is extremely difficult for the following vehicles to maintain an appropriate inter-vehicle distance according to the vehicle speed. there were.

This invention has been made to solve this problem, and aims to provide an automobile display device that can display the entire traveling speed of your own troops to following vehicles, ensure safe driving of the following vehicles, and prevent rear-end collisions. purpose.

[Means for solving problems]

The automobile display device according to the present invention is provided with a display device that displays the traveling speed of the own army moment by moment so that the driving of the following vehicle can be confirmed.

[For production]

In this invention, the traveling speed of the own vehicle is displayed outward from the vehicle using a display device, and information for maintaining a safe inter-vehicle distance is provided to the driver of a following vehicle that is fully following the vehicle. [Example] The following , an embodiment of a display device for an automobile according to the present invention will be described with reference to the drawings. FIG. 1 is a side view of an automobile applied to one embodiment of the invention, showing a vehicle speed sensor 2 for detecting the traveling speed of the IKH vehicle, a processing device 3 for taking in the signal of this vehicle speed sensor 2 and calculating the traveling speed of the vehicle, and It is equipped with a drive device (14) that drives the display device 5 based on the output signal of the processing device 3.

As shown in an enlarged view in FIG. 2, the display device 5 is disposed, for example, on the rear tray of the vehicle body 1 with the display surface facing rearward.

The display device 5 may be composed of, for example, a fluorescent display tube, and may be configured to display the vehicle speed by arranging straddled LEDs+liquid crystals in the form of segments or dots.

The vehicle speed sensor 2 can be, for example, a magnetic or original rotation speed detection sensor that is linked to a speedometer cable shaft provided in the transmission.

A microcomputer is used as the processing device 3, and a drive circuit corresponding to the display element used in the display device 5 can be used as the drive device 4.

With this configuration, while the vehicle is being driven, the display 11 indicates that the vehicle's traveling speed is always backward, allowing the driver of the following vehicle to know the traveling speed of the preceding vehicle. Therefore, while the driver of the following vehicle is observing the speed of the preceding vehicle,
This allows you to maintain the optimal distance between vehicles and completely prevent rear-end collisions.

Fig. 3 is a perspective view showing another embodiment of the display device for an automobile according to the present invention, and in Fig. 3, 5 is a display device which also serves as a brake light; For example, a plurality of display elements 6a, 6b arranged in a matrix...
Consisted of.

@Display device 5 in Figures 3 and 4 shows σ during brake operation.
All the display elements 6a, 6b, . . . light up, and when the brake is not operated, only a predetermined display element lights up to display the traveling speed.

With this configuration, there is no need to provide an IrfcK display device for displaying the traveling speed.

In addition, in the above embodiment, an example was shown in which the traveling speed display device was installed on the rear tray or used as a brake light, but it is not necessary to be limited to these examples, and it can be seen by the driver of the following vehicle. It may be installed in any other position as long as it is in the same position.

〔Effect of the invention〕

This invention (a) As explained above, a display device that can display the traveling speed is provided at a predetermined place on the vehicle body so that the driver of the following vehicle can check the speed, so the driver of the vehicle behind can see the speed. It is possible to maintain a safe distance between vehicles and prevent rear-end collisions, thereby enabling safe driving.

[Brief explanation of drawings]

Fig. 1a is a side view showing an embodiment of the automobile display device of the present invention; Fig. 2r is an enlarged perspective view of the display device portion of the automobile display device of Fig. 1; FIG. 4 is an enlarged perspective view of a portion of the display device in another embodiment of the display device shown in FIG. DESCRIPTION OF SYMBOLS 1... Single unit, 2... Vehicle speed sensor, 3... Processing device, 4... Drive device, 5... Display device, 5a, 6b.
...Display element. Note that the same reference numerals in the figures indicate the same or corresponding parts. Figure 1 Figure 3 W 4 Me) Procedural amendment (voluntary) 2. Name of the invention Automotive display device 3. Person making the amendment Relationship to the case Patent applicant address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Title (ωl) Mitsubishi Electric Corporation Representative Hitoshi Katayama Department 4, Agent 5, Claims column 6 of the specification subject to amendment, Claims of the specification subject to amendment as attached. correct. 7 Amendment of list of attached documents Claims 1 copy 2, Claims (1) A vehicle speed sensor that detects the traveling speed of a vehicle, a processing device that takes in the signal of this vehicle speed sensor and calculates the traveling speed of the vehicle, and a following vehicle. 1. A display device for a motor vehicle, comprising a display device disposed at a predetermined location on a vehicle body and displaying the traveling speed moment by moment so that the driver of the vehicle can confirm the same, and a drive device driving the display device using an output signal from the processing device. (2) A display device for a motor vehicle according to claim 1, wherein the display device is incorporated into a brake light section of the motor vehicle and serves both as a brake light and a display device. (3) The display device is characterized in that all of its component display elements light up when the brake is operated, and only a predetermined display element that displays the traveling speed lights up when the brake is not operated. Display device for the vehicle described.

Claims (3)

[Claims] (1) A vehicle speed sensor that detects the vehicle's traveling speed, a processing device that takes in the signal from this vehicle speed sensor and calculates the vehicle's traveling speed, and is installed at a predetermined location on the vehicle body so that the driver of the following vehicle can check it. 1. A display device for an automobile, comprising a display device that displays speed moment by moment, and a drive device that drives the display device using an output signal from the processing device. (2) The display device for a motor vehicle according to claim 1, wherein the display device is incorporated into a brake light section of the motor vehicle and serves both as a brake light and a display device. (3) The display device is characterized in that all of its constituent display elements light up when the brake is operated, and only a predetermined display element that displays the speed of light lights up when the brake is not operated. Automobile display device as described in Section 1.