JPH04286100A - Traffic accident preventing device - Google Patents

Abstract

PURPOSE:To provide the device notifying drivers of each other's approaching state so as to prevent accidents between a cars running on the road of an intersection hard to take a view of other cars without a signal, especially between a car running on the road intersected with three-forked road at right angle and a car running on the road with passing priority at intersection. CONSTITUTION:To solve a problem not knowing the mutual approaching state of cars, an alarm 1 equipped with light projection receiver of each car and a repeating device 2 at the center of the intersection are provided. The repeating device 2 consists of a photodetector receiving a first emitting light notifying the aapproach from the light projection receiver of each car and an optical projector dtransmitting second emitting light in at least two directions except the traveling direction at the intersection.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic accident prevention device for preventing accidents between vehicles that occur when vehicles fail to stop temporarily at intersections with poor visibility and no traffic lights.

0002

2. Description of the Related Art Currently, the only equipment available to prevent accidents at intersections with poor visibility and no traffic lights is a reflector. However, there are countless three-way intersections in Japan that do not even have reflectors. For this reason, vehicles that want to check left and right visibility may jump out a little and stop, or vehicles that turn left or right without stopping will not follow you. As a result, collisions with vehicles traveling straight through three-way intersections occur frequently.

0003

[Problems to be Solved by the Invention] The present invention is aimed at preventing vehicles from failing to stop because they cannot see that vehicles are approaching each other at intersections without traffic lights and poor visibility, especially at three-way intersections. Accidents such as collisions with vehicles traveling straight are common, but the problem is that it is unclear how close the vehicles are to each other.

0004

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and is intended to improve mutual understanding between vehicles traveling perpendicularly to intersections with poor visibility, especially three-way intersections, and vehicles traveling on priority roads passing straight through the intersection. It is an object of the present invention to provide a device that notifies each driver of an approaching state by a warning.

[0005]

[Means for solving the problem] In order to solve the above problem,
It consists of a warning device (1) equipped with a vehicle-mounted light emitter and receiver, and a relay device (2) installed at the center of a road intersection. The relay device (2) includes a photodetector that receives a first emitted light from a light emitter/receiver of the vehicle that indicates the approach of a vehicle, and a second emitted light in at least two directions other than the traveling direction of the road intersection. It is equipped with a light projector that transmits light.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below with reference to the drawings. FIG. 1 is an explanatory diagram showing an intersection situation. Warning device for drivers equipped with a vehicle-mounted emitter and receiver (1)
A relay device (2) will be installed at the center of the road intersection. The warning device (1) for a vehicle (3) traveling perpendicular to a three-way intersection emits a first emitted light (
5) is output to the relay device (2) installed at the center of the intersection. When the relay device (2) receives the first transmitted light (5), the relay device (2) transmits a second light beam toward a vehicle (4) passing straight through the three-way intersection.
It outputs the transmitted light (6) and (7). The straight vehicle (
Upon receiving the second transmission light (6), the warning device (8) of 4) flashes a red lamp or sounds a buzzer to alert the driver that the vehicle (3) is approaching at right angles to the three-way intersection. etc. to warn you. Figure 1 shows a straight vehicle (4
) The first emitted light (dashed line) from the alarm device (8) installed in
Although the direction in which the second transmitted light travels is output from the relay device (2) in two directions orthogonal to the vehicle (4), it approaches the three-way intersection orthogonally. The vehicle (
3) is simultaneously receiving the above-mentioned warning such as the red lamp from the warning device (1) mounted on his own vehicle. Next, embodiments and effects of the present invention will be described in more detail with reference to FIGS. 2 and 3. FIG. 2 is a block diagram showing an embodiment of an alarm device (1) equipped with a light emitter and receiver mounted on each vehicle. FIG. 3 is a block diagram showing an embodiment of a relay device (2) installed at the center of a road intersection. Alarm device (1) in Figure 2
The operation and effects will be explained using examples. When the driver turns on the floodlight switch (11), the transmitter circuit (12) operates at a predetermined frequency, and the semiconductor laser (14) that is the floodlight is activated.
) operates the drive circuit (13), so the laser light
The light is focused by the projecting lens (15), and the first emitted light (5
). Next, when the second transmission light emitted from the relay device (2) toward the own vehicle from the competing vehicle reaches the main alarm device (1) via the optical path (17), the light receiver (18) The amplifier circuit (19) operates and amplifies the minute signal. The second emitted light is identified and decoded as a disturbance noise light by the decoder (20), and a warning red lamp (22) is turned on by the drive stage circuit (21). It should be noted that the red lamp (22) may be any other alarm or buzzer sound. Next, with reference to FIG. 3, the operation and effect of the relay device (2) installed at the center of the road intersection will be explained. The relay device (
2) is placed at the center of a cross-shaped intersection, and vehicles A, B, C, and D are approaching from four directions. Assuming that vehicle A first advances into the reception range of the relay device (2), the light receiver (104) receives the first transmitted light from vehicle A, is amplified by the amplifier (105), and is transmitted to the decoder ( The signal identified in step 106) enters the second transmission light transmission circuit (114) through the OR circuit (113), and is transmitted to the parking circuit (123) of the semiconductor laser (122) and the semiconductor laser (125) at a predetermined frequency. drive circuit (124). As a result, second emitted light is emitted toward vehicles B and D, which are traveling on a road orthogonal to vehicle A and approaching the intersection. Next, when vehicle C enters the reception range of relay device (2), the receiver (110) and amplifier (11
1) The decoder (112) operates and the first emitted light from the vehicle C is identified and enters the OR circuit (113). As a result, the second emitted light enters the oscillation circuit (114) again in the same manner as described above, and the semiconductor lasers (122) and (125) emit light with the second emitted light again at the predetermined frequency. The light will be projected towards approaching vehicles B and D. The operation of vehicles B and D receiving the second transmitted light from vehicles A and C and issuing a warning to the driver is as described in the embodiment of the warning device in FIG. Also, this situation is the relay device (2)
Vehicles B and D enter the receiving range first, and the competing vehicles A,
The same thing happens when C enters later, and the light emitting lights arranged in parallel,
The light receiving circuit system switches and operates.

[0007]

[Effects of the Invention] According to the present invention, a major purpose is to provide a device for preventing accidents with vehicles proceeding straight on three-way intersections without traffic lights. If there are two circuits arranged perpendicularly to each other that simultaneously output the second emitted light in two directions perpendicular to the direction of incidence and reception of the first emitted light, it will be sufficient for crossroads without traffic lights. It becomes possible to correspond to Also, even in the same three-way intersection or cross intersection, the angle of the road is not necessarily 90 degrees at right angles, but the mounting direction of the receiver and emitter (semiconductor laser in Fig. 3) of the relay device (2) can also be rotated. If you design it in advance, you will have the advantage of being able to easily make adjustments at the construction site. Next, it goes without saying that the relay device (2) can be constructed by being built into a road flashing installed at the center of an intersection, which is already in general use.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an intersection situation in which the device according to the present invention operates.

FIG. 2 is a block diagram showing an embodiment of an alarm device (1) equipped with a light emitter and receiver mounted on each vehicle.

FIG. 3 is a block diagram showing an embodiment of a relay device (2) installed at the center of an intersection.

[Explanation of symbols]

1 is an alarm device 2 is a relay device 3 is the vehicle to play against 4 is the vehicle to play against 5 is the first emitted light from the floodlight 6 is the second transmitted light from the repeater 7 is the second transmitted light from the repeater 8 is an alarm device 11 is the alarm switch 12 is an oscillation circuit 13 is a laser drive circuit 14 is a floodlight (semiconductor laser) 15 is a lens for projecting light 16 is the first emitted light from the floodlight 17 is the second emitted light that enters the alarm device 18 is a light receiver 19 is an amplifier circuit 20 is a decoder 21 is a lamp drive circuit 22 is a warning lamp 101 is a floodlight (semiconductor laser) 102 is a laser drive circuit 103 is a transmitting circuit 104 is a light receiver 105 is an amplifier circuit 106 is a decoder 107 is OR circuit 108 is a laser drive circuit 109 is a floodlight (semiconductor laser) 110 is a light receiver 111 is an amplifier circuit 112 is a decoder 113 is OR circuit 114 is a transmitting circuit 116 is a light receiver 117 is an amplifier circuit 118 is a decoder 119 is a decoder 120 is an amplifier circuit 121 is a light receiver 122 is a floodlight (semiconductor laser) 123 is a laser drive circuit 124 is a laser drive circuit 125 is a floodlight (semiconductor laser)

Claims (1)

[Claims] Claim 1: An alarm device (1) equipped with a vehicle-mounted light emitter and receiver and installed at the center of a road intersection to receive a first emitted light from the light emitter and receiver of the vehicle to notify the state of vehicle approach. and a relay device (2) installed at the center of the road intersection, which is equipped with a photodetector that transmits the second transmitted light in at least two directions other than the traveling direction of the road intersection. Traffic accident prevention device.