JPH04155499A - Automatic traffic signal device - Google Patents

Abstract

PURPOSE:To attain simple and economic automatic traffic accident prevention by driving the automatic traffic signal device when an automobile or walker passes an intersection or a pedestrian crossing. CONSTITUTION:When a vehicle or a walker arrives at a position between transmitters 3, 4 or a mat switch 5, a signal circuit is driven by the switching action of the unit 3, 4, or 5 and a signal lamp 2 indicating 'GO' (blue) or 'STOP' (red) is turned on. When the automatic traffic signal device is arranged on a pedestrian crossing having no signal device and a traffic signal is automatically generated at the time of passage of a vehicle or a walker, the generation of a traffic accident can be prevented by the simple device.

Description

[Detailed description of the invention] (b) Industrial application fields This invention relates to a traffic signal device.

(b) Conventional technology and problems Many intersections and crosswalks on roads with relatively low traffic volume do not have signal devices (approximately 65% of intersections where accidents occur), which is one of the causes of frequent traffic accidents (accidents (over 60% of the total). The purpose of this invention is to provide a simple and economical automatic signal device for installation in such locations, thereby playing a role in preventing traffic accidents.

(8) Means and action for solving the problem Various types of devices such as the photoelectric switch type, ultrasonic switch type, and mud switch type can be considered as the above-mentioned device types.
The figure is an explanatory diagram of the former two, and FIG. 2 is an explanatory diagram of the latter. In each figure, A, B, C, and D are the corners of the intersection, ■ is the pillar of the signal light 2, 3 is the transmitter (light projector or wave transmitter), 4 is the receiver (light receiver or receiver), and 5 is the The mud switch and arrows a, b, c, and d indicate the direction of travel of the vehicle or pedestrian. Also, Figure 3 shows the coil spring 6 of the mud switch 5.
In one example using
and a conductor 11 to a power source (12 in FIG. 4). A leaf spring may be used instead of a coil spring, and it goes without saying that it must have a high load capacity. 3. When a car or pedestrian reaches between the transmitters 3 and 4 or on the mud switch 5, respectively.
By the action of switch 4 or 5, a signal circuit as shown in Fig. 4 is activated, and the signal light 2 for proceeding (blue) and stopping (red) is activated.
is lit. The signal activation time is regulated by a timer.

(d) Effects of the invention This device is installed at intersections and crosswalks without signal devices, and automatically issues traffic signals when cars or pedestrians pass, so it is possible to prevent traffic accidents by using a relatively simple device. This is thought to contribute to reducing the number of deaths.

[Brief explanation of drawings]

The drawings are explanatory diagrams of an automatic signal device according to the present invention, and FIG. 1 shows a photoelectric switch type (or ultrasonic switch type).
, FIG. 2 shows the structure of a switch part using a mud switch type coil switch. Moreover, FIG. 4 shows a signal circuit common to each system.

Claims (1)

[Claims] An automatic traffic signal device that operates when a car or pedestrian passes through a road intersection or crosswalk.