JPH07296290A - One-way traffic signal device - Google Patents

Abstract

PURPOSE:To enable a vehicle to efficiently pass even at the time of generating the abnormality in a detection means or at night when the traffic is little. CONSTITUTION:Detection means 8 and 9 detecting the passage of the vehicle are provided corresponding to up and down signals 6 and 7. With a traffic- actuated controller 10, the up and down signals 6 and 7 are repeatedly turned on and off by taking blue and red, full red, red and blue, and full red as one cycle. A detection abnormality switching means 51 controlling the blue light of the other signal periodically till the other detection signal is inputted if no detection signal is inputted even when the switching waiting time passes after inputting the detection signal from one of the detection means 8 and 9. Thus, even when the switching waiting time is elapsed from the input of the detection signal from one detection means, the other signal is periodically operated. When the other detection signal is inputted after the periodical operation, the other signal device is recovered to the original traffic-actuated operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to traffic lights which are temporarily installed at both ends of a road construction section for one-sided traffic, and up and down detecting means which are provided corresponding to these traffic lights and detect traffic of vehicles. The present invention relates to a traffic signal device for one-sided traffic, which comprises a control device for responsively controlling and switching the lighting time of the traffic light according to detection signals detected by these detecting means.

[0002]

2. Description of the Related Art Conventionally, in a road construction section, when up and down vehicles are alternately passed by one-sided traffic, traffic signals are temporarily installed on both sides of the construction section, and one-sided traffic control is performed by these traffic signals. As the traffic light,
A two-position type that switches between red and blue for lighting is used. And as for the operation of those traffic lights, a red flashing operation that makes both traffic lights blink red by a lighting control device provided in the traffic light, and an up and down traffic light by a manual changeover switch, blue and red, both are red By the manual operation to switch to all red, red and blue lighting, and the lighting control device provided in the signal device,
There is a fixed cycle operation that repeatedly lights up and down traffic lights based on each set time with blue and red, all red, blue and red, all red as one cycle. Can be switched by. The manual operation is inconvenient because the administrator must always operate the manual changeover switch to change the display of the traffic light. Further, when each operation is switched by the operation switch in response to a change in traffic conditions or when a failure occurs in the control device, in the conventional device, when the operation is switched, another operation is immediately performed. Therefore, there was a problem that the green light suddenly changed to a red light. Specifically, when the manual operation in which one is lit in blue and the other in red is switched to the fixed cycle operation, one is immediately switched to red and the other is lit in blue, and the vehicle invaded by the manual operation being lit in blue. Then, there is a risk that the other vehicle invading by turning on the blue light of the regular operation after the switching causes a face-to-face collision in a one-side traffic section.

Further, in the above-mentioned fixed cycle operation, although each lighting time can be set, it is difficult to cope with changes in traffic volume. Therefore, when the traffic volume from one side is large and the traffic volume from the other side is small, one side is There was a problem that the waiting time was long and congestion was likely to occur. Therefore, for example, Japanese Patent Laid-Open No.
Japanese Patent Laid-Open No. 62198 has traffic signals and detection means such as a pressure sensor for detecting the number of vehicles installed at both ends of a construction section, and traffic is controlled so that the blue lighting time of the traffic signal on the side with many vehicles becomes longer. A signal controller was proposed, and also
In Japanese Utility Model Laid-Open No. 64-27798, signal indicators are provided at both ends of a road construction section, and a vehicle detection device such as an optical sensor provided near the signal indicators detects a vehicle to detect the signal. A signal device for switching the display of has been proposed.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the traffic signal control device of Japanese Patent No. 62198, since the number of vehicles waiting in a certain section before the construction section is detected, it is necessary to provide detection means at each of two locations, resulting in a large equipment cost and complicated control. There was a side that became. Also,
This is to control the blue lighting time of the traffic lights on the side with many waiting vehicles to be long, but if the lighting length of the traffic lights is controlled only by the information on the number of vehicles waiting, the vehicles in both directions can be efficiently It is difficult to reduce the waiting time of the vehicle through the route, and there is a concern that congestion will occur. Further, in the signal device of Japanese Utility Model Laid-Open No. 64-27798, since the vehicle detecting device is provided at each of the two sides, the device can be made relatively inexpensive, and the vehicle detecting device can evenly pass the vehicle in both directions. Although it was possible, if only one side was congested, it was not possible to eliminate the congestion and pass the vehicle efficiently.

By the way, in both of the above prior arts, the vehicle is detected by a detection means such as a pressure sensor or an optical sensor.
Although it is a sensitive type that controls the lighting of the traffic light based on this, there is a problem in that the control of the traffic light is hindered if the detection means fails. If, for example, the detection signal from the detection means continues for a predetermined time or longer, and if the input state continues for, for example, 15 seconds or longer, the control of the traffic light can be automatically switched as an abnormality of the detection means. When there is no detection signal of No., it was not possible to judge that an abnormality occurred in the detection means because the detection signal was not input for this predetermined time or longer. That is, in the case where one detection means is provided on each side of the road construction section, there is a restriction that the traveling direction of the vehicle cannot be determined by the detection signal. Therefore, after inputting one detection signal, the vehicle is detected. Even if the passing time of 1 has passed, it cannot be determined that the other detection means has an abnormality because the other detection signal has not been input. Specifically, if the one detection signal is a detection signal when the vehicle exits and passes through the road construction section, then the other detection means does not detect the passage of the vehicle. In addition to the above, depending on the conditions of the passing vehicle, there is a possibility that the detecting means cannot detect the passing vehicle.
Since the signaling device that performs such automatic control operates even at night when the traffic volume is disrupted, there is a problem in that it cannot be determined that the detection means is abnormal simply by the information that the detection signal is disrupted.

Therefore, an object of the present invention is to provide a one-sided traffic signal device which allows a vehicle to pass through efficiently even when an abnormality occurs in the detection means or when the nighttime traffic volume is small. The purpose is to provide a traffic signal for one-sided traffic that can ensure the safety of vehicle traffic, further reduce the waiting time of the vehicle, and efficiently drive the vehicle even when an abnormality occurs in the detection means or when night traffic is low. It is an object of the present invention to provide a one-way traffic signal device that can be passed through.

[0007]

According to the invention of claim 1, upstream and downstream traffic lights temporarily installed at both ends of a road construction section in which upstream and downstream vehicles pass alternately, and the traffic lights corresponding to these traffic lights, respectively. It is provided with an up and down detecting means provided for detecting the passage of the vehicle, and a sensitive control device for sensitively controlling and switching the lighting time of the traffic light according to the detection signals detected by these detecting means. In one-side traffic signal device that repeatedly lights up and down traffic lights with blue and red, all red, red and blue, all red as one cycle, after inputting one detection signal, switching setting time of one cycle time or more If the other detection signal is not input even after the lapse of time, a detection abnormality switching means is provided to control so that the other traffic signal is lit in blue at a constant cycle until the other detection signal is input. It is.

According to a second aspect of the present invention, the sensitive control device includes a lighting time setting means capable of setting a minimum and maximum green time of a traffic light, and the vehicle within a switching standby time before the end of the minimum green time. When the detection signal is input, the blue lighting time is extended by a unit extension time, and when the detection signal is input within the extended unit extension time, the blue lighting time is increased until the maximum blue time is reached. And a lighting time control means for extending every unit extension time.

According to a third aspect of the present invention, upstream and downstream traffic signals temporarily installed at both ends of a road construction section where upstream and downstream vehicles alternately pass through, and vehicles are provided corresponding to these traffic signals. It is equipped with an up-and-down detecting means for detecting, and a sensitive control device for sensitively controlling the lighting time of the traffic light by the detection signals detected by these detecting means to switch the up and down traffic lights by this sensitive control device. And a red, all red, red and blue, all red are repeatedly lit as one cycle, a one-side traffic signal device capable of switching between a manual operation and a fixed cycle operation, the manual operation comprising:
An operation changeover switch for changing over the display of the traffic light is provided for three operations of a fixed cycle operation and a sensitive operation, and when the operation changeover switch is used to switch from one operation to the other operation, both traffic lights are completely red for a predetermined time. After the light is turned on, a switching control device that controls to execute the other operation is provided.

According to a fourth aspect of the present invention, there is provided a sensitive operation in which the sensitive control device repeatedly lights up and down traffic lights for blue and red, all red, red and blue, and all red, and a manual operation. A traffic signal device for one-sided traffic that can be switched to a fixed cycle operation, which is provided with an operation changeover switch for changing the display of the traffic light to three operations of the manual operation, the fixed cycle operation, and the sensitive operation. When a switch switches from one operation to the other operation, a switching control device is provided to control both traffic lights to perform the other operation after being fully red-lighted for a predetermined time.

[0011]

In the above-mentioned structure of the present invention, the last detection signal is output when one or more set cycle time has elapsed from the time when the last detection signal output from both detection means was input. The other traffic signal different from the detecting means is switched to the fixed cycle operation, and only the traffic signal on the other side continues the fixed cycle operation until the detection signal is input from the detecting means on the other side. Thus, for example, when the detection signal from one detection means is the last and the detection signal of the other is not input even after the switching set time has elapsed from this time, this is considered to be an abnormality of the other detection means. Then, the other traffic signal is shifted to the fixed cycle operation, and if the other detection means is really abnormal, the vehicle can be smoothly passed by the fixed cycle operation thereafter. If the other detection signal is not input due to the small amount,
Even if the operation shifts to the fixed cycle operation, when the other detection signal is input, the other traffic signal returns to the original sensitive operation. Since there is no vehicle passing through until the vehicle returns, even if the other traffic signal operates in a fixed cycle, it does not hinder the passage of traffic.

In the above-mentioned structure of the present invention, the blue lighting time of the traffic light is switched between the minimum green time and the maximum green time depending on the presence / absence of a vehicle passing within the unit extension time.

In the structure of claim 3, when one operation is switched to another operation, both traffic lights are lit red for a predetermined time regardless of the display contents of the previous operation and the subsequent operation. After the red light is turned on, the operation is switched to the other operation display.Therefore, while the red light is on, vehicles in the road construction section can pass safely. Will never come in.

In the configuration of the above-mentioned claim 4, when the time of one cycle time or more of the set time elapses from the time when the last detection signal of both detection means is input, the detection means that outputs the last detection signal. The other different traffic light is switched to the fixed cycle, and only the traffic light on the other side continues the fixed cycle operation until the detection signal is input from the detection means on the other side. Also, if one operation is switched to another operation, both traffic lights will turn on red once regardless of the display contents of the previous operation and the subsequent operation, and after all red lights for a predetermined time, the other Since it switches to the display of the operation of, while the red light is on, vehicles in the road construction section can pass safely,
The vehicle will not come in from the other side with all red lighting.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to FIG. 1 show an embodiment of a one-sided traffic signal device according to the present invention, in which a road 1 has two lanes, an up lane 2 and a down lane 3, and in this example, the up lane 2 is a road construction 4 Accordingly, the road is closed, and the section of the one-side regulation length L meter is the road construction section 5 in which the up and down vehicles alternately pass. Simple traffic signals 6 and 7 are temporarily installed at both the up and down ends of this road construction section 5, and these traffic signals 6 and 7 are those that can switch between blue and red lighting of the second place and can blink red. Used. Reference numerals 8 and 9 denote detection means provided at stop line positions (not shown) on the up and down lanes 2 and 3 corresponding to the traffic signals 6 and 7. These detection means 8 and 9 are pressure sensors and optical sensors. Various sensors are used to detect passage of the vehicle and output a detection signal.

Reference numeral 10 denotes a sensitive control device for controlling the blue and red lighting of the traffic lights 6, 7 in accordance with the vehicle detection signal detected by the detection means 8, 9. The sensitive control device 10 includes each detection means 8 , 9 and traffic lights 6, 7 are electrically connected to each other via an electric cable, and the sensitive control device 10 controls the traffic lights 6, 7 such that one is blue and the other is red, and both are red.
One cycle is performed in which one is red, the other is blue, and further, all red is lit and displayed. The sensitive control device 10 is provided with timing means 11 such as a timer for counting the passage of time and lighting time setting means 12, and this lighting time setting means 12 is
Setting value input means 13 such as a keyboard and setting knobs described later 13
Therefore, the minimum green time Ts common to the traffic lights 6 and 7, the maximum green time Tmax that can be different from each other, the total red time Tr in which both traffic lights 6 and 7 are simultaneously lit in red, and the switching standby time Tk and the unit to be described later. The value of the extension time Te can be arbitrarily set, and these are stored in the lighting time setting means 12. The minimum green time Ts
Is the time when the traffic lights 6 and 7 continue to turn on blue regardless of the vehicle detection signal, and the maximum blue time Tmax is the time when the traffic lights 6 and 7 switch from blue to red lighting regardless of the vehicle detection signal, The switching standby time Tk is a predetermined time before the end of the minimum green time Ts, and the unit extension time Te
Is the time to extend the blue lighting time from the time when the vehicle passes by the detection signal of the vehicle. The total red time Tr is calculated by the following equation.

Tr = L / Vave where Vave is the average speed of the vehicle passing through the road construction section 5, and it is assumed that a vehicle having an average speed of 20 km / hour passes the one-side regulation length L, which is 5 The total red time Tr is obtained by dividing the total red time Tr by 6 m / sec, and the total red time Tr is set to the average time required for the vehicle to pass through the road construction section 5.

Further, the sensitive control device 10 is provided with a lighting time control means 14 for controlling the blue and red lighting times of the traffic lights 6 and 7, and the lighting time control means 14 controls the minimum blue time Ts. Before the end, when the detection signal of the vehicle is input from the detection means 8 within the switching standby time Tk equal to the unit extension time Te, the blue lighting of the traffic light 6 is extended from the input time by the unit extension time Te. If there is no traffic in the unit extension time Te, that is, if there is no detection signal input, the traffic light 6 is switched to red lighting, while the above 1
When the vehicle detection signal is input within the extended unit extension time Te for the second time, the unit extension time Te is further input from this input.
Only by extending the blue lighting, extend the extension to the maximum blue time Tmax to the maximum, and when the maximum blue time Tmax is reached,
Regardless of the remaining time of the unit extension time Te, the traffic light 6 is controlled to switch to red, and both traffic lights 6 and 7 are completely red.
When the total red time Tr has elapsed, the other traffic light 7 is switched to blue lighting, and the same blue lighting time is controlled by the detection signal from the other detecting means 9. In addition, the sensitive control device 10
Is provided with an all-red time automatic learning calculation means (hereinafter referred to as all-red time automatic learning means) 15. If the detection means is a pressure sensor, this detection means 9 is provided over the entire width of the road, that is, for up and down roads. The detecting means 8 and 9 are constructed so as to be able to detect the traffic of up and down vehicles, respectively, and the full red time automatic learning means 15 is the last one which passes when one is lit in blue based on the detection signal from the detecting means 8 and 9. Of the vehicle is measured, and the total red time Tr is set and controlled based on the required time, and thus the lighting time setting means 12 is set.
The total red time Tr can be set and controlled without depending on, for example, the average value of the required transit times every 30 minutes is input to the lighting time setting means 12 as the total red time Tr, and is set. In the time zone in which the required transit time is relatively long, such as time, the total red time Tr is set to be relatively long. On the other hand, when the number of transits is small, the vehicle can pass without stopping due to the traffic signal. Therefore, the total red time Tr can be set relatively short. Further, the sensitive control device 10 has a detecting means 8,
When the failure of 9 is detected, for example, a defect or disconnection is detected, or when an abnormality such that both traffic lights 6 and 7 are lit in bluish blue, it automatically shifts to the fixed cycle control to perform smooth signal processing. A self-judgment function can be provided to control so that when the lighting lamps of both traffic lights 6 and 7 run out, the sensitive control device 10 detects this and a warning means (not shown) is used. Control such as issuing a warning sound can be performed.

An example of the control of the traffic lights 6 and 7 by the sensitive control device 10 will be described below with reference to the flow chart of FIG. 2. During the minimum green time Ts after the blue output, the detection means 8 detects the vehicle When the detection signal is input to the sensitive control device 10, as shown in the figure, it is determined that “there is an input” and the blue lighting is extended by the unit extension time Te. If “there is no input”, the elapsed time is changed. When the check is completed and the minimum blue time Ts is finished, the control is performed so as to be "all red lighting", and when "there is input", the blue lighting is controlled until the maximum blue time Tmax is reached. .

Further, FIG. 3 is for explaining the passage of time and the lighting of the traffic lights 6 and 7 with the horizontal axis as the time axis.
Indicates the input of the detection signal from the detection means 8, and when there is no detection signal input within the switching standby time Tk as in the uppermost stage, the full red time Tr of full red lighting after the minimum blue time Ts has elapsed.
When the detection signal is input within the switching waiting time Tk before the end of the minimum green time Ts as in the middle stage, the blue lighting time is extended every unit extension time Te, that is, the arrow Y on the left side of the middle stage. During the unit extension time Te extended by the first detection signal shown, 2 indicated by the arrow Y from the left is displayed.
When the second detection signal is input, the blue lighting time is extended by the unit extension time Te from the time when the second detection signal is input, and the third detection signal indicated by the arrow Y on the right is input. After that, when there is no detection signal input, after the unit extension time Te has passed from the input of the third detection signal, the total red time Tr of all red lighting is reached, and the unit extension extended as shown in the lower row. When the detection signal is continuously input during the time Te and reaches the maximum blue time Tmax at the maximum, it switches to red lighting regardless of the remaining time of the unit extension time Te by the sixth detection signal, and the vehicle is in a traffic state. Accordingly, the optimal control of the traffic signals 6 and 7 is performed, and the blue lighting time of the downlink is similarly controlled by the detection signal from the detection means 9.

In the one-side traffic signal device in which the sensitive control device 10 performs the sensitive operation as described above, the unit extension time Te
Depending on the presence / absence of a vehicle passing inside, the blue lighting of the traffic lights 6 and 7 is switched between the minimum green time Ts and the maximum blue time Tmax, and the blue lighting is switched when the vehicle is interrupted and the traffic volume of the vehicle is increased. Since it lights up in blue according to the above, even if the up and down traffic is different, the congestion of only one is eliminated, the waiting time of the vehicle is shortened,
It is possible to efficiently control the traffic of up and down vehicles.
Further, the detecting means 8 and 9 need only be installed near the road construction section 5 such as a stop line, and wiring of an electric cable or the like connected to the sensitive control device 10 can be short and the entire device can be provided at low cost. . Further, since the length of one cycle changes depending on the traffic of the vehicle, unnecessary waiting time is eliminated, and efficient one-sided alternate traffic can be performed.

In the one-sided traffic signal device capable of performing the above-mentioned sensitive operation by the sensitive control device 10,
The sensitive control device 10 is housed in an operation box 21 shown in FIG. 4, and in the operation box 21, a lighting control device provided with a CPU and an electric circuit for controlling the operation shown in the conventional example. 22 is provided, and the sensitive control device 10 can be incorporated in a part of the lighting control device 22, as shown in FIG. 5, or the sensitive control device 10 can be provided independently. In the description, it is assumed that the indications of "Signal A" and "Signal B" located on the left and right of FIG. 4 correspond to the up and down traffic signals 6 and 7, respectively. The lighting control device 22 is provided on the front surface of the operation box 21 and a red flashing operation for simultaneously making both the traffic lights 6 and 7 blink red by operating the operation changeover switch 23 provided on the front surface of the operation box 21. Manual operation to turn on the up and down traffic lights 6 and 7 by blue and red, all red, red and blue by the switching operation of the manual changeover switch 24, and the up and down traffic lights 6 and 7 at respective set times. It is possible to switch the display of the traffic signals 6 and 7 to four operations based on a fixed cycle operation in which blue and red, all red, red and blue, and all red are repeatedly lit sequentially, and the sensitive operation. It is electrically connected to the switches 23 and 24, and when the operation selector switch 23 is switched, the manual selector switch 24
To the display side of "A blue" on the left in Fig. 4, the up and down traffic lights 6 and 7 are lit in blue and red, and both traffic lights 6 and 7 are in the center.
Is lit red, all red lights up, and when you push it to the right "B blue", the up and down traffic lights 6 and 7 are switched between red and blue lights, and the time setting knob operation is provided on the front of the operation box 21. As a result, the upstream and downstream traffic lights 6 in the fixed cycle operation
The respective blue lighting time of No. 7 and the all red lighting time of both traffic lights 6 and 7 are simultaneously lit in red are set, and the four operations are switched by operating the operation changeover switch 23 on the front surface of the operation box 21. Is configured. That is, the operation changeover switch 23 is set to "flashing red" shown in FIG.
When rotated to the display positions of "manual", "sensitive", and "fixed cycle", the red blinking operation, the manual operation, the sensitive operation,
It is possible to switch to the fixed cycle operation. As shown in FIG. 4, the time setting knob is located at the upper left of the figure and is located at the center of the upper blue time setting knob 25 for setting the blue lighting time of the up traffic light 6 in the fixed cycle operation state. All-red time setting knob 26 that sets the all-red lighting time in the fixed cycle operation state, maximum blue time adjustment knob 27 that sets the blue lighting time of the down traffic light 7 in the fixed-cycle operation state located in the upper right, and the lower row And the minimum blue time setting knob 28 located at, and the value set by rotating the maximum blue time setting knobs 25 and 27 in the fixed cycle operation state is the blue lighting of the up and down traffic lights 6 and 7. The set time is set, and the set time adjusting knobs 25, 26, 27 and 28 also serve as the set value input means 13 in the above-described sensitive operation. That is, the operation selector switch 23 is set to the "sensitive" display,
By adjusting each knob 25, 26, 27, 28 to a desired time position, the maximum green time Tmax of the up traffic light 6, the total red time Tr, and the maximum green time Tma of the down traffic light 7 are set.
x and the minimum green time Ts common to both traffic lights 6 and 7 can be set, and these set times Tmax,
The sensitive control device 10 controls the sensitive operation of the traffic signals 6 and 7 based on Tr, Tmax and Ts.

As described above, in the signal device capable of switching the traffic signals 6 and 7 to the four operations of the red blinking operation, the manual operation, the fixed cycle operation and the sensitive operation by operating the operation changeover switch 23, in the present invention, A switching control device 31 is provided in the operation box 21. The switching control device 31 is composed of a CPU, an electric circuit, and the like, and can be incorporated in the lighting control device 22. The switching control device 31 operates the operation changeover switch 23 to operate the lighting control device 22 and the sensitive control. When switching to the operation by the control of the device 10 or the like, the transition of the operation is controlled.
Shows the control contents.

[0024]

[Table 1]

Based on Table 1 above, the switching control device 31
In the red blinking operation shown in the upper part of Table 1, when shifting to another operation, it is set based on the set time by the all red time setting knob 26, that is, set by the all red time setting knob 26. During the full red time Tr, both traffic lights 6 and 7 perform full red lighting, and then the operation shifts to another operation.

In the manual operation shown in the second stage of Table 1, regardless of the current lighting of both traffic lights 6 and 7, after all red lighting is performed during the all red time Tr which is a predetermined time,
Move to another operation. If the operation switch 23 is in the all-red lighting state, the operation switch 23 is switched and then all-red lighting is continued for a predetermined time, that is, the all-red time Tr, and then another operation is performed.

In the fixed cycle operation shown in the bottom row of Table 1, when the operation is shifted to another operation, the blue lighting time is the maximum blue of the blue lighting signal with reference to the lighting of the blue lighting signal. After the time Tmax has passed, the all-red lighting is performed for the all-red time Tr, which is a predetermined time, and then the operation is shifted to another operation. After the changeover switch 23 is switched, all red lighting is continuously performed for the all red time Tr which is a predetermined time, and then another operation is performed. FIG. 6 is a time line diagram showing an example of shifting from the fixed cycle operation to the manual operation, showing the passage of time toward the right in the figure. In this manual operation, the manual changeover switch 24 is displayed as “B blue”. Push down to the side and signal up and down 6,7
If the manual operation is switched when the upstream traffic light 6 is lit in blue while the red and blue lights are being displayed, after continuing to illuminate blue until the remaining blue time Tz of the maximum blue time Tmax, which is the set time, is continued. , All red lighting is displayed for all red time Tr,
After this, the up and down traffic lights 6 and 7 which are the indications of the manual operation
Switches to red and blue lighting.

In the sensitive operation shown in the third row of Table 1, when the operation is shifted to another operation, the blue lighting time is the minimum blue of the blue lighting signal with reference to the lighting of the blue lighting signal. If the time is less than the time Ts, the blue lighting is continued until the minimum blue time Ts is reached, and after the minimum blue time Ts elapses, the all red lighting is performed for the predetermined all red time Tr, and thereafter other operations are performed. After the transition, the traffic light lit in blue is the minimum green time T
If s has elapsed, the all-red lighting is immediately switched to, all-red lighting is performed for the predetermined all-red time Tr, and then another operation is performed. If the operation switch 23 is in the all-red lighting state, the operation switch 23 is switched and then all-red lighting is continued for a predetermined time, that is, the all-red time Tr, and then another operation is performed.

Reference numeral 32 in the drawing denotes a main switch for turning on and off the electric system of the operation box 21, and an operation confirmation lamp which is turned on when the main switch 32 is turned on.
33 is provided in the upper center of the operation box 21.
Also, 34 and 35 are indicator lights for displaying the lighting states of the corresponding traffic lights 6 and 7, and the upper and lower sides are red and blue indicator lights like the traffic lights. Sensor operation indicator lamps 36 and 37 are provided at the respective positions for confirming the operation of the corresponding detecting means 8 and 9. 38 and 39 are input terminals for connecting the electric cables of the corresponding detecting means 8 and 9, and 40 and 41 are output terminals for connecting the electric cables between the corresponding traffic signals 6 and 7 and the operation box 21.

The operation of the switching control device 31, which is one of the features of the one-sided traffic signal device of the present invention, will be described in detail. The main switch 32 is turned on to operate each device, and the operation switching switch 23 is turned on. When switching, for example, before switching, when the upstream and downstream traffic lights 6 and 7 are in red and blue lights in the manual operation state, if the operation changeover switch 23 is switched to the fixed cycle operation, conventionally, the upstream and downstream traffic lights 6 immediately. , 7 were switched to the opposite blue and red lighting, but before switching to the fixed cycle operation, the switching control device 31 controls both traffic lights 6 and 7 to switch to red lighting at the same time as switching, After turning on all red during the all red time Tr which is a predetermined time,
Switch to the opposite blue and red lighting, and shift to the fixed cycle operation. For this reason, in the prior art, the lighting of each of the traffic lights 6 and 7 was switched at the same time as the operation changeover switch 23 was switched, but the switching control device 31 turned on Tr red for a predetermined time, and during this all red lighting. A vehicle running in the road construction section 5 can safely pass through the road construction section 5 and is prevented from entering from the other side because it is regulated by lighting in red. In addition, when the up and down traffic lights 6 and 7 are lit in red and blue by the fixed cycle operation, and the up and down traffic lights 6 and 7 are set to blue and red by the manual changeover switch 24, That is, when the manual changeover switch 24 is tilted to the left, if the operation changeover switch 23 is used to change over to the manual operation, conventionally, the up traffic light 6 turns red in red and the down traffic light 7 turns red in blue. There was a risk that the vehicle would switch immediately and the ingress vehicle was intruded by the uphill traffic light, and the downhill vehicle that was permitted to intrude by the uptime traffic light would have a face-to-face collision. With 31, once both traffic lights 6, 7
However, after the red light was turned on during the all red time Tr, it was switched to the blue and red lights, and the vehicles in the road construction section 5 could pass safely while the red light was turned on. Vehicles will not come in. Furthermore, when both traffic lights 6 and 7 are flashing red, the vehicle from the up and down direction will stop at the traffic lights 6 and 7 position, check the safety, and then pass through the road construction section 5. Although it does
When the operation changeover switch 23 is operated from the red blinking state to move to another operation, one traffic light is conventionally lit in blue and the other traffic light is immediately lit in red, and the intrusion is permitted by the blue lighting. There is a risk that the vehicle may collide with the invading vehicle at the time of the red flashing, but in this device, both traffic lights 6 and 7 are once changed to red lighting from the red flashing state, and the total red time Tr.
Since all red lights are turned on and then another operation is performed, a vehicle that has entered when the red lights flash can safely pass through the road construction section 5, and is controlled by the all red lights so that a vehicle enters from the other side. It won't come. Further, in the sensitive operation state, all red time Tr is always turned on before shifting to another operation, so that a vehicle invading with blue lighting can safely pass through the road construction section 5, and Since it is regulated by the red lighting, the vehicle does not come in from the other side, and the red lighting is switched to after the minimum blue time Ts elapses, so that the traffic is not obstructed according to the traffic volume of the vehicle. The operation can be smoothly switched, and the sensitive operation is suitable for use when there is a relatively large amount of traffic in the vehicle. Therefore, for example, in a vehicle that waits twice for a signal, However, if the operation is switched to another operation during the second blue lighting that is about to pass, conventionally, the blue lighting time will be suddenly shortened compared to the first time, and the driver will be frustrated and anxious. May be given, Compared to first signal latency in the apparatus, between the minimum green time Ts at a minimum, to continue the green lighting, less to give the annoyance and anxiety to the driver.

In the signal device which performs a sensitive operation based on the detection signals of the detection means 8 and 9 as described above, in the present invention, the control device 10 has a small traffic volume at the time of occurrence of an abnormality in the detection means 8 and 9 and at night. Even in such a case, it has a function of smoothly guiding the vehicle, and its configuration will be described in detail below.

The control device 10 has a detection abnormality switching means 51. The detection abnormality switching means 51 is provided with a keyboard (not shown) or a switching time setting means (not shown) having the same structure as the above-mentioned setting knobs. A switching standby time Tc is input or set, and a ROM for storing the same is provided. When a detection signal is input from one of the detection means 8 and 9 during a sensitive operation, the time counting means 11 counts the elapsed time T, Has a time elapse comparing means 52 for comparing with the switching standby time Tc, and a reset means 53 for clearing the elapsed time T to 0 when one detection signal is input and the other detection signal is input. Further, the detection abnormality switching means 51 is configured such that the elapsed time T is equal to the switching standby time Tc.
After passing, the operation of the other traffic signal is controlled to be switched to the fixed cycle operation, and the other traffic signal switched to the fixed cycle operation is returned to the sensitive operation by the detection signal from the other detection means. Having means 53. The switching control device 31 is operated by the operation of the operation changeover switch 23, and is not operated when the detection abnormality switching means is operated.

Further, the control contents of the detection abnormality switching means 51 will be described with reference to the block diagram of FIG. 7, which illustrates the operation of the upstream traffic signal 6, and the operation of the downstream traffic signal 7. "Up" is read as "Down". In the traffic signals 6 and 7 that operate by the sensitive operation,
The detection abnormality switching means 51 performs the following control. First, in the upstream operation signal 6 in the sensitive operation state, when there is no detection signal from the other down detecting means 9, the sensitive operation is continued, and when the down detecting signal is input, the up detecting means 8 detects it. The elapsed time T is counted until the signal is detected, and in the normal case, the reset means 53 resets the elapsed time T by the input of the upstream detection signal. In FIG. 7, when the down detection signal is input after the start of the sensitive operation, the time counting means 11 counts the elapsed time T, and the elapsed time comparing means 52 changes the elapsed time T to the switching standby time Tc.
Until that time, the resetting means 53 continues to wait for the upstream detection signal to be detected, and the upstream traffic signal 6 continues to operate in a fixed cycle. However, when the elapsed time T has passed the switching standby time Tc from the input of the down detection signal, the time lapse means 52
Becomes a "YES" flow, the traffic light 6 becomes "fixed cycle operation start" and switches to the fixed cycle operation. In this state, normally, only the down detecting means 9 outputs the detection signal, there is no up detecting signal even after the switching standby time Tc, and the up detecting means 8 causes an abnormality such as a failure. Considering this, the detection abnormality switching means 51 shifts only the upstream traffic signal 6 to the fixed cycle operation, and the blue lighting time of the upstream traffic signal 6 is set to the maximum blue time Tmax and the minimum green time Ts set in the sensitive operation. To average. However, at night or when the traffic volume is low, the elapsed time T may exceed the switching standby time Tc even in the case where there is no abnormality in the detection means 6, and in this case, the periodical operation is started after the switching standby time Tc has elapsed. However, when the upstream detection signal is input, the “YE
As indicated by "S", the detection abnormality switching means 51 controls so that the traffic light 6 restarts the sensitive operation. Then, the detection abnormality switching means 51 similarly switches the operation of the down traffic light 7.

FIG. 8 illustrates the passage of time and the lighting of the traffic light 7 with the horizontal axis as the time axis. The small arrows A to I, a.
The symbols f to f indicate the output of the detection signals from the respective detection means 8 and 9, and in FIG. 8, the switching standby time Tc is set to the time of 4 cycles of the traffic signals 6 and 7, and FIG. Is shown. Since one cycle time is variable between the sensitive operation and the fixed cycle operation operated by the detection abnormality switching means 51, one cycle time is set as an average of the maximum blue time Tmax and the minimum green time Ts. The calculated abnormality is stored in the detection abnormality switching means 51 and is compared with the elapsed time T. For example, if the switching standby time Tc is set to about ½ of one cycle time, it is shown in FIG. When the downward detection signal of the small arrow m is input almost at the same time as switching to the downward blue lighting, and the upward detection signal is input at the arrow M to start counting elapsed time, the next upward traffic signal 6 Before the lights up in blue, the traffic light 6 switches its periodic operation.
Since the operation switching is performed too rapidly, it is preferable that the switching standby time Tc is at least one cycle time at least, and assuming that there is little traffic such as nighttime,
The length may be about 10 cycle times, and in consideration of these, in the present embodiment, the switching standby time Tc is set to 4 cycle times which is four times as long as one cycle time. Returning to FIG. 8 again, the small arrows A and a indicate the case where the vehicle from the up direction passes through the road construction section 5, and the elapsed time T is counted by the detection signal of the small arrow A, and the other small arrow It is cleared by the downward detection signal of arrow a, and small arrows c and C are cases where the vehicle passes through the road construction section 5 from the downward direction, and counting of the elapsed time T is started by the input of the upward detection signal in the small arrow C. Is cleared by the downward detection signal in the small arrow d, and the count starting with the small arrow b is cleared by the small arrow C. Further, in the counting of the elapsed time T by the time counting means 11, in the small arrows d and e where no upstream detection signal is input, the elapsed time is counted independently from both inputs, and the upstream arrow D is detected. Cleared by signal input.
Then, when four cycles have elapsed after the upstream detection signal is input by the small arrow D, the downstream traffic signal 7 shifts to the fixed cycle operation. On the other hand, in the upstream traffic signal, the detection signal is detected by the small arrow D after the small arrows d and e. Since it has been input, continue the sensitive operation. As described above, after the input of the one upstream detection signal, even if the switching standby time Tc of 4 cycles elapses and the downstream detection signal is not input, the downstream traffic signal 7 is switched to the fixed cycle operation. , When the down detection signal is input as indicated by the small arrow f in FIG. 8, the sensing operation is restored. Further, when the downlink detecting means 9 actually causes an abnormal operation, this detection signal is not output, and therefore the downlink traffic signal 7 continues to perform the fixed cycle operation as it is. And if the detection signal is interrupted and only the information is switched, the operation of the traffic light is switched, if there is no traffic of the vehicle at night,
For example, the traffic signal upstream between the small arrow H and the small arrow I in FIG. 8 is also switched to the fixed cycle operation. However, in the present invention, when one detection signal is input and the other detection signal is not input for a predetermined time. , Since the other traffic signal is to be moved to the fixed cycle operation, the operation transition except when the means is abnormal is suppressed,
Further, as in the embodiment, even if the detecting means 8 and 9 detect only the passage of the vehicle and the direction of the vehicle is unknown, the vehicle can be smoothly guided.

As described above, in this embodiment, according to claim 1, the road construction section 5 in which the up and down vehicles alternately pass through
Upstream and downstream traffic lights 6 and 7 temporarily installed at both ends of the vehicle, and upstream and downstream detection means 8 and 9 provided corresponding to these traffic lights 6 and 7 for detecting vehicle traffic, and these detection means 8 , Signal 9 by the detection signal detected by
Sensitive control device that switches the lighting time of 7 by sensing control 10
In the one-sided traffic signal device for repeatedly lighting up and down traffic lights 6 and 7 by this sensitive control device 10 with blue and red, all red, red and blue, and all red as one cycle,
After the input of one detection signal, even if the switching standby time Tc of one cycle time or more elapses, if the other detection signal is not input, the other traffic signal is lit in blue until the other detection signal is input. Since the detection abnormality switching means 51 for controlling so as to switch to the cycle is provided, one cycle time or more, which is the set time from the time when the last detection signal output by both detection means 8 and 9 is input, When the switching set time Tc has elapsed, the other traffic signal different from the detection means that outputs the last detection signal is switched to the fixed cycle operation, and only the traffic signal on the other side is fixed until the detection signal is input from the detection means on the other side. The periodic operation is continued, whereby the detection signal from one of the detection means is the last, and from this time the switching set time T
If the other detection signal is not input even after the lapse of more than c, it is assumed that this is an abnormality of the other detection means and the other traffic signal is shifted to the fixed cycle operation. If the other detection signal is not input because the detection cycle of the other detection means and the traffic volume are small, the fixed cycle operation allows the vehicle to smoothly pass through. When the other detection signal is input even after shifting to, the other traffic signal returns to the original sensitive operation, and there was almost no vehicle traffic until this return, so the other traffic signal Even if the traffic light operates in a fixed cycle, it does not hinder the passage of traffic, and the detection means 8, 9
It is possible to drive the vehicle efficiently even when there is an abnormality in the vehicle or when there is little traffic at night.

As described above, in this embodiment, in accordance with claim 2, the sensitive control device 10 includes the lighting time setting means 12 capable of setting the minimum and maximum green times Ts and Tmax of the traffic signals 6 and 7.
When the vehicle detection signal is input within the switching standby time Tc before the end of the minimum green time Ts, the blue lighting time is extended by the unit extension time Te, and the detection signal is output within the extended unit extension time Te. When it is input, it has a lighting time control means 14 for extending the blue lighting time for each unit extension time Te until the maximum green time Tmax is reached. Therefore, depending on the presence / absence of a vehicle passing within the unit extension time Te, The green lighting time of the traffic light is switched from the minimum green time Ts to the maximum green time Tmax, and the blue lighting is switched when the traffic of the vehicle is interrupted, and the blue lighting is performed according to the traffic volume of the vehicle. Even if the traffic volume is different, the congestion of only one is eliminated, the waiting time of the vehicle is shortened, and the traffic of up and down vehicles can be efficiently controlled.

As described above, in this embodiment, according to claim 3, the road construction section 5 in which the up and down vehicles alternately pass through.
Upstream and downstream traffic lights 6 and 7 temporarily installed at both ends of the vehicle, and upstream and downstream detection means 8 and 9 provided corresponding to these traffic lights 6 and 7 for detecting vehicle traffic, and these detection means 8 , Signal 9 by the detection signal detected by
Sensitive control device that switches the lighting time of 7 by sensing control 10
With this sensitive control device 10, the up and down traffic lights 6 and 7 are repeatedly illuminated with blue and red, all red, red and blue, and all red as one cycle, manual operation, and fixed cycle. It is a one-sided traffic signal device that can be switched to operation, and is provided with an operation selector switch 23 that switches the display of the traffic signals 6 and 7 to three operations of manual operation, fixed cycle operation, and sensitive operation. When one operation is switched to another operation by the switch 23, a switching control device which controls both traffic lights 6 and 7 to perform another operation after all red lights are turned on for a predetermined red time Tr which is a predetermined time. Since 31 is provided, when one operation is switched to another operation, both traffic lights turn red once regardless of the display contents of the previous operation and the subsequent operation, and all red lights for a predetermined time. After lighting, switch to the other operation display Therefore, while the red light is on, the vehicles in the road construction section 5 can pass safely, and the red light does not allow the vehicle to come in from the other side. The safety of can be secured.

As described above, in this embodiment, according to the fourth aspect, the sensitive control device 10 repeatedly lights up and down traffic lights with blue and red, all red, red and blue, and all red as one cycle. A one-sided traffic signal device capable of switching between a sensitive operation, a manual operation, and a fixed cycle operation, and switching the display of the traffic signals 6, 7 to three operations of a manual operation, a fixed cycle operation, and a sensitive operation. An operation changeover switch 23 is provided, and when this operation changeover switch 23 is used to switch from one operation to another,
Since the switching control device 31 is provided to control both traffic lights 6 and 7 to perform another operation after all red lights are turned on for a predetermined red time Tr, which is the last of both detection means. When one cycle time or more of the set time has elapsed from the time of inputting the detection signal of, the other traffic signal different from the detection means that output the last detection signal is switched to a constant cycle, and the detection means on the other side Until the detection signal is input, only the traffic light on the other side continues to operate in a fixed cycle, and the vehicle can be efficiently passed through even when an abnormality occurs in the detection means 8 or 9 or when the night traffic is small. Also, when one operation is switched to another operation, both traffic lights 6 and 7 are lit red once regardless of the display contents of the previous operation and the subsequent operation, and the total red time Tr that is a predetermined time During this period, the red light is turned on and then the display of the other operation is switched, so that the vehicle in the road construction section 5 can pass safely and the red light is turned on during the red light. As a result, the vehicle does not come in from the other side, and the safety of one-sided traffic at the time of operation switching can be secured.

Further, as an effect of the embodiment, the blue lighting time of the traffic light which has shifted to the fixed cycle operation by the detection abnormality switching means 51 is set to the average of the maximum green time Tmax and the minimum blue time Ts set in the sensitive operation. As a result, even if an abnormality occurs in the detection means, the vehicle can be passed efficiently. Further, the switching set time Tc is 1 cycle time or more and 10 cycle times or less, preferably 4 in the embodiment.
By setting the cycle time, it is possible to smoothly guide the passage of the vehicle even when the traffic volume is small, such as at night when the detection means is not abnormal. Furthermore, when one of the red lights is blue, the transit time of the final vehicle that passes through the road construction section 5 is measured from the up and down detection signals, and the transit time is set to the total red lighting Tr. Since the time automatic learning means 15 is provided, the all red time automatic learning calculation means 15 can automatically set the all red time of all red lighting. Furthermore, the switching control device 31
When one of the up and down traffic lights 6 and 7 is lit in blue in the fixed cycle operation, when the operation changeover switch 23 is switched to another operation, the blue lit during the remaining green time Tz of the longest green time Tmax which is the set time. Since it is configured to switch all traffic lights to red after the traffic lights are lit blue, even if the fixed cycle operation is switched to another operation, it will switch to red immediately in the middle of the blue lighting setting time. Without turning on the vehicle, it continues to turn on blue for the remaining green time Tz of the set time, and then switches to full red lighting, so that it is possible to secure the safety of one-sided traffic at the time of switching the operation without disturbing the traffic of the vehicle. . Further, when the operation changeover switch 23 switches the operation other than the sensitive operation to the sensitive operation, both the traffic signals 6 and 7 are lit for the full red time Tr which is the predetermined time Tr red, and then the sensitive operation is executed and the sensitive operation is performed. When the blue lighting of the blue lighting signal is less than the minimum blue time Ts by switching to another operation described above, the blue lighting is performed until the minimum blue time Ts elapses, and then the red lighting is switched to the all red lighting for a predetermined time. When the red time Tr is all lit red, and the blue lighting of the blue lighting traffic light has exceeded the minimum blue time Ts, it is immediately switched to all red lighting and control is performed so that all red time Tr all red is lit for a predetermined time. Switching control device 31
Because it is provided with, 1 according to the traffic volume of the vehicle
If you switch from one operation to another,
Regardless of the display contents of the subsequent operation, both traffic lights 6 and 7 will be lit red once, and after all red lights for a predetermined time,
Since the display of the other operation is switched to, the vehicle in the road construction section 5 can safely pass while the red light is on, and the vehicle does not come in from the other side.
It is possible to secure the safety of one-sided traffic when switching operations. Furthermore, since the all-red time Tr, which is the predetermined time for the all-red lighting, is the average time that the vehicle passes through the road construction section 5, when the operation is switched to the time required for the vehicle to pass through the road construction section 5. Since the full red time Tr is set, even a vehicle that has entered the road construction section 5 immediately before the operation switching can reliably pass through during the full red lighting.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, as the detecting means, various sensors can be used as long as they can detect the traffic of up and down vehicles. Further, in the embodiment, the lighting time control means 12 may be controlled to extend the maximum green time of the other traffic light when the traffic of one vehicle is low. Further, in each embodiment, when a power failure or the like occurs, the function may be maintained for about 30 minutes by an internal battery (not shown).

[0041]

According to the invention of claim 1, upstream and downstream traffic lights temporarily installed at both ends of a road construction section in which upstream and downstream vehicles alternately pass, and vehicles installed respectively corresponding to these traffic lights. Upstream and downstream detection means for detecting traffic,
And a sensitive control device for sensitively controlling the lighting time of the traffic light according to the detection signals detected by these detecting means to switch the lighting time of the traffic light to blue and red, all red, red and blue. In a one-side traffic signal device that repeatedly lights all red as one cycle, after inputting one detection signal, even if the switching setting time of one cycle time or more has elapsed, if the other detection signal is not input, It is provided with detection abnormality switching means for controlling the other signal to turn on the blue light in a fixed cycle until the other detection signal is input, even when an abnormality occurs in the detection means or when night traffic is low. It is possible to provide a one-sided traffic signal device that allows a vehicle to pass through efficiently.

According to a second aspect of the present invention, the sensitive control device comprises a lighting time setting means capable of setting a minimum and maximum green time of a traffic signal, and the vehicle within a switching standby time before the end of the minimum green time. When the detection signal is input, the blue lighting time is extended by a unit extension time, and when the detection signal is input within the extended unit extension time, the blue lighting time is increased until the maximum blue time is reached. To provide a one-sided traffic signal device that has a lighting time control means that extends every unit extension time and that can efficiently pass a vehicle even when an abnormality occurs in the detection means or when the night traffic volume is small. You can

According to the third aspect of the present invention, upstream and downstream traffic lights temporarily installed at both ends of a road construction section in which upstream and downstream vehicles alternately pass, and the traffic of vehicles provided corresponding to these traffic lights. It is equipped with an up-and-down detecting means for detecting, and a sensitive control device for sensitively controlling the lighting time of the traffic light by the detection signals detected by these detecting means to switch the up and down traffic lights by this sensitive control device. And a red, all red, red and blue, all red are repeatedly lit as one cycle, a one-side traffic signal device capable of switching between a manual operation and a fixed cycle operation, the manual operation comprising:
An operation changeover switch for changing over the display of the traffic light is provided for three operations of a fixed cycle operation and a sensitive operation, and when the operation changeover switch is used to switch from one operation to the other operation, both traffic lights are completely red for a predetermined time. A switching control device that controls to execute the other operation after being lit is provided, and it is possible to provide a one-side traffic signal device that can ensure the safety of vehicle traffic at the time of switching the operation. .

According to a fourth aspect of the present invention, there is provided a sensitive operation in which the sensitive control device repeatedly lights up and down traffic lights for blue and red, all red, red and blue, and all red, and a manual operation. A traffic signal device for one-sided traffic that can be switched to a fixed cycle operation, which is provided with an operation changeover switch for changing the display of the traffic light to three operations of the manual operation, the fixed cycle operation, and the sensitive operation. When switching from one operation to another operation by a switch, a switching control device is provided to control both traffic lights to perform the other operation after being fully red-lighted for a predetermined time. It is possible to provide a one-sided traffic signal device that saves time and allows a vehicle to pass through efficiently even when an abnormality occurs in the detection means or when the night traffic volume is small.

[Brief description of drawings]

FIG. 1 is an explanatory plan view showing an embodiment of the present invention.

FIG. 2 is a flowchart showing an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing an embodiment of the present invention.

FIG. 4 is a front view of an operation box showing an embodiment of the present invention.

FIG. 5 is a block diagram showing an embodiment of the present invention.

FIG. 6 is a time diagram for explaining the shift from the fixed cycle operation to the manual operation according to the embodiment of the present invention.

FIG. 7 is a flow chart of detection abnormality switching means showing an embodiment of the present invention.

FIG. 8 is a time diagram illustrating an operation example of the detection abnormality switching unit according to the embodiment of the present invention.

FIG. 9 is a time diagram of one cycle time showing an embodiment of the present invention.

[Explanation of symbols]

 1 road 2 up lane 3 down lane 5 road construction section 6 7 traffic light 8 9 detection means 10 sensitive control device 12 lighting time setting means 14 lighting time control means Tr all red time (predetermined time) Ts minimum blue time Tmax maximum blue time (Predetermined time) Tk Switching standby time Te Unit extension time Tz Remaining green time Tc Switching setting time T Elapsed time 22 Lighting control device 23 Operation switching switch 24 Manual switching switch 25 27 Maximum blue time setting knob (setting value input means) 28 Minimum Blue time setting knob (setting input means) 31 Switching control device 51 Detection abnormality switching means

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kaoru Takeda 1-5-5 Nakajima, Igarashi, Niigata City, Niigata Prefecture

Claims (4)

[Claims] 1. Up and down traffic lights temporarily installed at both ends of a road construction section in which up and down vehicles pass alternately.
It is provided with up and down detection means provided corresponding to each of these traffic lights to detect the passage of the vehicle, and a sensitive control device for sensitively controlling and switching the lighting time of the traffic light according to the detection signals detected by these detection means. In this one-sided traffic signal device that repeatedly lights up and down traffic lights with blue and red, all red, red and blue, and all red as one cycle by this sensitive control device, after inputting one detection signal, If the other detection signal is not input even after the switching set time of more than the cycle time has elapsed, control is performed to switch the blue lighting of the other traffic light to a fixed cycle until the other detection signal is input. A one-sided traffic signal device comprising means. 2. The sensitive control device comprises a minimum of traffic lights,
When the detection signal of the vehicle is input within the switching standby time before the end of the minimum green time and the lighting time setting means capable of setting the maximum green time, the blue lighting time is extended by a unit extension time, and When the detection signal is input within the extended unit extension time, there is a lighting time control means for extending the blue lighting time for each unit extension time until the maximum green time is reached. The one-sided traffic signal device described in 1. 3. Up and down traffic lights temporarily installed at both ends of a road construction section where up and down vehicles pass alternately.
Up and down detection means provided corresponding to each of these traffic lights for detecting the passage of the vehicle, and a sensitive control device for sensitively controlling the lighting time of the traffic light by the detection signals detected by these detection means to switch. With this sensitive control device, one-sided traffic that can be switched between a sensitive operation that lights up and down traffic lights repeatedly for one cycle of blue and red, all red, red and blue, and all red, manual operation, and fixed cycle operation An operation changeover switch for changing over the display of the traffic light to three operations of the manual operation, the fixed-cycle operation, and the sensitive operation, and the operation changeover switch allows the operation signal switch to switch from the one operation to the other operation. A one-sided traffic signal device comprising a switching control device for controlling both traffic lights to be fully red for a predetermined time and then performing the other motion when switched to the operation. 4. The sensitive control device performs a sensitive operation of repeatedly lighting up and down traffic lights in blue and red, all red, red and blue, and all red as one cycle, a manual operation, and a fixed cycle operation. A switchable one-sided traffic signal device, which is provided with an operation changeover switch for changing over the display of the traffic light to three operations of the manual operation, the fixed cycle operation, and the sensitive operation. The one side according to claim 1 or 2, further comprising a switching control device that controls both traffic lights to be fully red for a predetermined time when the operation is switched to the other operation, and then performs the other operation. Traffic signal equipment.