JPS60251500A - Traffic signal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Description of the technical field to which the invention pertains The present invention mainly relates to a traffic signal temporarily installed on a road where one-way traffic is restricted due to road construction or the like.

(2) Prior art and its problems When one side of the road is under construction and vehicles cannot cross each other, temporary traffic signals are installed at both ends of the one-way section of the road to control one-way traffic. It is often done. In other words, signal lamps are installed at both ends of the nine one-way traffic sections, and when the lamp on the first direction side displays a green light to allow traffic from the first direction, the lamp on the second direction side displays a green signal. The idea is to display a green light and stop traffic from the second direction in order to facilitate vehicle traffic. Traffic signals used temporarily for such purposes naturally require the same system as permanently installed traffic signals, but for transportation and handling purposes, it is necessary to install between the lights installed at both ends of the equipment necessary for the system Must be connected with a cable. If the one-way traffic section is a few tens of meters long, it is not a big problem to lay the cable, but if it is more than a few hundred meters long, the work of transporting, bringing in, and laying the cable becomes troublesome. If there are obstacles along the way, it may not be possible to simply detour the cable, and special construction may be required to lay the cable.

(3) Detailed Description of the Invention An object of the present invention is to provide a traffic signal that can be easily installed on roads with one-way traffic sections without requiring any special construction work.

(4) Detailed description of the invention The present invention consists of a first container body and a second container body, and the first container has a signal light for the first direction and a signal display for the first and second directions can be switched. A control unit for controlling the display, a code conversion circuit for encoding the current ladder command for displaying the signal in the second direction, and a transmitting unit for transmitting the encoded signal are installed, and the encoded signal is transmitted to the second body. A receiving section for receiving signals, a code demodulation circuit for the received signal, and a second direction signal light for displaying signals based on the received signals are installed, and the transmitting section for the first device and the receiving section for the second device are installed. This traffic signal is characterized by having both parts connected to electric light lines.

(5) Description of examples Embodiments of the present invention will be described below with reference to the drawings.

In Figure 1, there is a
traffic light 1 for one direction, and traffic light 2 for a second direction at the other entrance/exit.
Set up each. The present invention incorporates a first direction signal lamp 3, a control section 4, a transmitter 5, etc. in a body (hereinafter referred to as the first body) la of a first direction signal 1, and a body of a second direction signal 2. (hereinafter referred to as the second vessel body) 2a is equipped with a receiving section 6 and a signal light 7 for the second direction, and both vessel bodies 1a +
By connecting the signal cables 8 and 9 pulled out from 2a to the outdoor power line 10, the current staircase command signal issued from the control unit 4 is transmitted to the first direction signal light 3 and the second direction signal light 7 by the power line conveyance. In addition, the switching control of the signal display is performed.

FIG. 2 shows an example of a specific configuration of the control section 4 and the transmission section 5 provided in the first vessel 1a. Note that the configuration of the control section 4 is basically no different from a general signal controller.

That is, the clock generated by the timer 11 is used to set the display time of each rung by the time setting unit 12, and the signal is controlled by the step counter 13, and the display rung is set in advance by the matrix circuit 14 according to the display time of each rung. The step signal in the first direction and the step signal in the second direction are taken out, and the step signal in the first direction is introduced into the lamp switching circuit 15. ) lights up. On the other hand, the step signal in the second direction is introduced into the transmitter 5,
First, a signal is encoded in the code conversion circuit 16, and the encoded signal is sent to the transmitter 17, for example, as FSX (Fr1quen
cy 5hift Keying) method,
It is sent to the power line 10 through a matching transformer 18 .

FIG. 3 shows the configuration of the receiving section 6 and the lighting circuit for the signal lamp 7 provided in the second vessel. A step signal in the second direction transmitted from the first body 1a side is introduced into the receiver 20 via the power line 10, the matching transformer 19 of the receiving section 6, and then the control signal via the code demodulator 21. The control signal is used to operate the lamp opening/closing circuit 22 to turn on the second direction signal lamp 7 (blue lamp 2G or red lamp 2R). Note that 23 is a latch circuit provided before the lamp opening/closing circuit 22. The latch circuit 23 is a circuit for keeping the signal lighting 70 on continuously when the step signal in the second direction is interrupted. Figure 4 shows an example of the staircase displayed by both signal lights.

As shown in FIG. 5, the traffic signal of the present invention has a signal cable 819 and a power cable 24, 25 pulled out from a body 1a+2a on which signal lights 3 and 7 are installed, respectively.
Leg stands 26 and 27 are attached to the bottom surface of the container body 1a+2a, so that it can be installed on the ground. Of course, it may be attached to an existing pillar by attaching a hook or other attachment tool.

In the embodiment, the first vessel 1a and the second vessel 1a are brought into the entrance/exit of a section where traffic is one-sided due to road construction, etc., and each signal light 3, 7 is placed in the first direction of the road and in the second direction. Install it on the street, facing the direction. Note that the meaning of the first direction and the second direction is to distinguish between one direction of approach to a one-sided road and the other, and it is free to set which side is the first direction. Next, the power cables 23, 24 and signal cables 8, 9 pulled out from each vessel 1a+2a are connected to the power distribution line (light line) 10 stretched along the road, and then connected to each vessel 1a.

While supplying power to the system, one line of the power distribution line is used as a signal transmission path to electrically connect the two bodies 1a and 2a.

That is, the first step signal generated in the first vessel 1a is used to light the signal lamp 3 in the first direction, and the step signal in the second direction is transmitted to the second vessel 2a by so-called electric light line conveyance. The signal lamp 7 in the second direction is turned on and the lighting is switched according to a predetermined current ladder.

(6) Detailed Description of the Invention As described above, the present invention uses electric light lines to transmit control signals for traffic lights, and is applicable to most roads since power distribution lines are generally installed along roads. be able to.

Regarding the power line transport system, it is generally said that power lines are unsuitable as signal transmission paths because their impedance is not constant, there is a lot of noise, and the load is undefined, but encoded signals are used. Therefore, it is less likely to be affected by noise.

In addition, since the present invention incorporates the control equipment into the vehicle body together with the signal light, it is only necessary to carry the vehicle body onto the road and connect it to the electric light line, making it easy to install and remove the vehicle from the road. Excellent effects can be obtained as traffic signals temporarily installed on roads under construction. Of course, the present invention is not limited to temporarily installed traffic signals, but can also be applied to lighting equipment wiring for general traffic signals, interlocking between intersections having relatively short distances, and the like.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the configuration of the device of the present invention, FIG. 2 is a block diagram showing the configuration of the first direction signal, and FIG. 3 is a block diagram showing the configuration of the first direction signal.
FIG. 4 is a block diagram showing the configuration of the directional signal, FIG. 4 is a current ladder diagram, and FIG. 5 is a front view of the first directional signal and the second directional signal. 1..First direction signal 1a+.First vessel 2...Second direction signal 2a...Second vessel 3..Signal lamp (first direction) 4...Control section 5 Transmission section 6・Receiving section 7...Signal light (second direction) 8, 9...Signal cable 1
0.Light line patent applicant: Sanko Co., Ltd. Agent: Patent attorney: Kanno Nakashi Figure 1

Claims (1)

[Claims] (1) A first container and a second container are installed at both ends of the road in a one-way section, and the first container has a signal light for the first direction and a signal display for the first and second directions. A control unit for switching control, a code conversion circuit for coding the current ladder command of the signal display in the second direction, and a transmitter for transmitting the coded signal are installed in the second body, and the code a receiving section for receiving the encoded signal, a code demodulation circuit for the received signal, and a second direction signal light for displaying a signal based on the received signal; A traffic signal characterized in that a receiving part and a receiving part are respectively connected to an electric light line.