JP2018166037A - Traffic signal system for traffic control - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a plurality of traffic signals from being damaged due to the lightning strike by forming a light strike protection region in a wide range surrounding the plurality of traffic signals.SOLUTION: A traffic signal system is configured by installing light strike protection type lightning protection means 4 that protects the light strike to the circumference of a junction S or the like by distributing a minus electric charge at an upstream of a plurality of traffic signals 3 to the junction S or the like in which the plurality of traffic signals 3 are provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a traffic control traffic signal system installed at an intersection or the like.

  In general, a traffic signal system for traffic control for vehicles and pedestrians is installed on roads where intersections and pedestrian crossings are installed.

  The traffic control traffic signal system includes a traffic signal installed at a predetermined height from a road by a support column, and the traffic signal is operated by an external power source.

  By the way, when a lightning strike occurs, the power supplied from the external power source to the traffic light may stop due to the lightning strike, or the traffic light itself may be damaged. The traffic control function of the traffic system for traffic control is lost, resulting in traffic congestion and accidents.

  The above-mentioned lightning strike is a discharge phenomenon that occurs in the atmosphere, and lightning discharge includes in-cloud discharge, cloud-to-cloud discharge, cloud-to-ground discharge, and the like. It is the cloud-to-ground discharge (hereinafter referred to as lightning strike) that causes significant damage from lightning discharge. A lightning strike is a phenomenon that occurs when the electric field strength between a thundercloud (cloud bottom) and a structure constructed on the earth or ground becomes very large, and its charge is saturated to break the insulation of the atmosphere. is there.

When lightning phenomena are observed in detail, in the case of a general lightning (summer lightning) that occurs in the summer, when the thundercloud matures, the steppedore approaches the ground from the thundercloud, selecting where it is likely to discharge air.
When the stepreader is at a certain distance from the ground, a weak current upward streamer (greeting discharge) extends from the ground, a building (lightning rod), a tree, or the like toward the stepreader.
When this streamer and steppeda are coupled, a large current (feedback current) flows between the thundercloud and the ground through the path.
This is a lightning phenomenon.

  For such a lightning phenomenon, a conventional lightning protection concept cannot prevent lightning strikes, and a projecting lightning rod (Franklin rod) is installed to attract lightning to one point of the lightning rod. Most of the methods were used to flow through (see Patent Document 1).

  Therefore, in order to protect the traffic control signal system from lightning strikes, the external light source or It is common to prevent lightning strikes to the power supply path from the external power source and to the traffic light itself.

JP 2012-80018 A

  According to such a lightning prevention method for traffic control signal system using the needle type lightning rod, depending on the weather conditions such as the weather, the lightning strike is not attracted to the needle type lightning rod, the surroundings of the traffic control signal system Therefore, a traffic control traffic signal system having a more effective lightning prevention function is desired.

  The traffic control traffic signal system according to the present invention is made based on the above-mentioned demand, and distributes negative charges above the plurality of traffic lights at the intersections where a plurality of traffic lights are installed, It is characterized by the installation of lightning suppression type lightning arrester that suppresses lightning strikes to the surroundings.

  With such a configuration, negative charges are distributed above the intersection or the like by the lightning-suppressing lightning arrester.

  When a thundercloud with a negative charge approaches the intersection, etc., the negative charge is distributed above the intersection, etc., thereby suppressing the occurrence of an upward streamer toward the cloud bottom. This suppresses lightning strikes on the traffic light and its surroundings.

Thus, a lightning protection area is formed above the intersection or the like by the negative charge distributed by the lightning suppression type lightning arrester.
The lightning strike protection range is widened so as to cover the traffic light, thereby greatly suppressing lightning strikes to the traffic light and intersections.

  The lightning strike suppression type lightning arrester can be constituted by a capacitor including a grounded first electrode body and a second electrode body opposed to the first electrode body via an electrical insulating layer.

  When a thundercloud having a negative charge approaches the bottom of the cloud, a positive charge is attracted to the ground, and accordingly, the first electrode body installed on the ground also has a positive charge.

  Thus, when the first electrode body is positively charged, the second electrode body opposed to the first electrode body via the electrical insulating layer is negatively charged.

  As a result, the above-described lightning protection region due to negative charges is effectively formed by the second electrode body of the capacitor.

  And the said lightning suppression type | mold lightning arrester may be mounted | worn with the said signal apparatus, and when the said signal apparatus is installed with two or more, you may mount | wear with each signal apparatus.

  With such a configuration, it is possible to install the lightning-suppressing type lightning arrester using the existing traffic light and to install in the vicinity of an object to be protected from lightning.

  Moreover, by attaching to each of the plurality of traffic lights, it is possible to expand the lightning protection area formed by the lightning suppression lightning protection means.

  Moreover, the electric power for operating the said traffic light can be ensured by producing | generating with the photovoltaic power generation panel which converts solar energy into electric power, and charging this electric power to a secondary battery.

  By having such a configuration, the driving power of the traffic signal system for traffic control is made independent and external power is unnecessary, and the solar power generation panel and the secondary battery are installed in the vicinity of the traffic signal. These power supplies can be located in the lightning protection area together with the traffic light.

Accordingly, not only the traffic light but also a power source that supplies power to the traffic light can be protected from lightning strikes, and power supply to the traffic light can be ensured.
As a result, the entire traffic control signal system can be protected from lightning.

  The secondary battery and the photovoltaic power generation panel can be provided in each signal device when a plurality of the signal devices are installed.

  In addition, a controller for controlling charging of the secondary battery by the solar power generation panel and controlling supply of lighting power to the traffic light may be provided.

  As a result, the controller for controlling the lighting of the traffic light can also be positioned within the lightning strike protection region, and the operation of the traffic light can be maintained.

  The controller is provided at each of the intersections or at each of the plurality of traffic lights.

  Further, the controller may be provided with lighting synchronization means for controlling the lighting mode among the plurality of traffic signals, and each signal device may be provided with a transceiver for transmitting and receiving control signals sent from the lighting synchronization means. desirable.

  By adopting such a configuration, it is possible to prevent the traffic control from being disturbed at an intersection or the like while maintaining the lighting state between the traffic lights.

  According to the traffic control traffic light system of the present invention, a lightning strike protection area due to negative charges is formed around the traffic control traffic signal system, and the occurrence of upward streamers from this area is effectively suppressed, Lightning strikes to traffic control traffic signal systems can be suppressed.

It is a perspective view which shows the outline of one Embodiment of this invention. It is a longitudinal cross-sectional view which shows the lightning strike suppression type lightning arrester used for one Embodiment of this invention. It is the schematic for demonstrating the generation | occurrence | production suppression effect | action of the upward streamer in one Embodiment of this invention. It is a system configuration figure of one embodiment of the present invention. It is a front view which shows the modification of the lightning strike suppression type lightning arrester used for this invention. It is a longitudinal cross-sectional view which shows the modification of the lightning strike suppression type lightning arrester used for this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, the code | symbol 1 shows the traffic signal system for traffic control concerning this embodiment.

  The traffic control signal system 1 according to the present embodiment is installed at an intersection S of a crossroad, and supports 2 are erected at each of four corners of the intersection S, and traffic is provided at the upper ends of these supports 2. Arrangement traffic lights 3 are mounted, and further, negative charges are distributed on one of these pillars 2 above the plurality of traffic lights 3 (that is, above the intersection S) and around the intersection S. A lightning suppression type lightning protection means 4 for suppressing lightning strikes is installed.

  In the present embodiment, as shown in FIG. 2, the lightning-suppressing lightning protection means 4 is provided so as to wrap the grounded first electrode body 5 and the first electrode body 5 with a predetermined gap. The second electrode body 6 is disposed in a gap between the first electrode body 5 and the second electrode body 6, and the first electrode body 5 and the second electrode body 6 are kept in an electrically insulated state. A capacitor is constituted by the insulating layer 7, the first electrode body 5 is formed in a substantially spherical shape, and the second electrode body 6 is formed in a shape similar to the outer shape of the first electrode body 5. Thus, the first electrode body 5 is covered with the second electrode body 6 over almost the entire surface.

  The first electrode body 5 has a true spherical shape and is formed in a hollow shape having a predetermined thickness as shown in FIG.

  A nut 8 is integrally attached to the lower portion of the first electrode body 5, and the first electrode body 5 is screwed to the tip of the support rod 9 through the nut 8.

  A lock nut 10 is screwed on the support rod 9, and the support rod 9 and the first electrode body 5 are fixed by pressing the lock nut 10 to the nut 8.

The second electrode body 6 is composed of a pair of second electrode structures 6a and 6b formed by being divided into two parts in the vertical direction.
The pair of second electrode constituting bodies 6a and 6b are abutted so as to sandwich the electrical insulating layer 7 from above and below, thereby encasing the electrical insulating layer 7 together with the first electrode body 5, and this abutted. The parts are integrated by welding (welded portion W), for example.

  A through hole 11 that communicates the inside and outside of the second electrode constituting body 6a is formed in the lower center of the lower electrode structure 6a, and the support electrically connected to the first electrode body 5 is formed in the through hole 11. A rod 9 is inserted, and the first electrode body 5 is grounded through the support rod 9.

  The electrical insulating layer 7 is composed of a lower spacer 7 a and an upper spacer 7 b that are divided into two parts in the vertical direction, like the second electrode body 6.

  The support rod 9 is passed through the central portion of the lower spacer 7a, and a part of the lower spacer 7a extends into the through hole 11 of the lower second electrode structure 6a. The support rod 9 and the lower second electrode structure 6a are held in an electrically insulated state, and are projected downward from the lower second electrode structure 6a.

The lightning suppression type lightning arresting means 4 of the present embodiment configured as described above is installed above the intersection S by connecting the support rod 9 to one of the columns 2.
Alternatively, the support column 2 can be extended upward and used as the support rod 9.

  In the state of being installed as described above, the first electrode body 5 is grounded via the support rod 9 and the support column 2.

  On the other hand, in this embodiment, as shown in FIG. 1, a photovoltaic power generation panel 12 that generates lighting power supplied to the traffic light 3 and a control box 13 that controls the power are provided. Yes.

  As shown in FIG. 4, the control box 13 includes a secondary battery 14 that stores electric power generated by the solar power generation panel 12, charging control for the secondary battery 14, lighting control of the traffic light 3, and the like. And a transmitter / receiver 16 for exchanging information of lighting forms of the plurality of traffic lights 3.

  As shown in FIG. 4, the controller 15 includes an I / O interface 17 to which the traffic light 3, the photovoltaic power generation panel 12, the secondary battery 14, and the transceiver 16 are connected, and this I / O. Charging control means 18, lighting control means 19, and lighting synchronization means 20 connected to the traffic light 3, the photovoltaic panel 12, the secondary battery 14, and the transceiver 16 via the interface 17. It has.

  Based on the voltage information of the secondary battery 14, the charging control means 18 continues to charge the secondary battery 14 when the voltage of the secondary battery 14 is below a reference value, and when the reference value is reached The charging is stopped to prevent overcharging.

  The lighting control means 19 controls the lighting mode of the traffic light 3 by controlling the power supplied to the traffic light 3.

  Further, the lighting synchronization means 20 uses the transceiver 16 to acquire information on the lighting mode of each traffic signal 3, and adjusts the lighting mode of each traffic signal 3 based on this information. .

  An antenna 21 attached to the support column 2 is connected to the transmitter / receiver 16 so as to exchange signals to the transmitter / receiver 16.

  Next, the lightning suppression function by the lightning suppression type lightning arrester 4 used in the present embodiment will be described.

  As shown in FIG. 3, when a thundercloud C in which a negative charge is distributed on the cloud bottom approaches, a charge opposite to that (positive charge) is distributed on the surface of the ground E, and the ground E passes through the support rod 9. The first electrode body 5 that is grounded also has a positive charge (not shown).

On the other hand, the second electrode body 6 opposed to the first electrode body 5 through the electrical insulating layer 7 is negatively charged by the action of a capacitor.
By this action, the second electrode body 6 makes a negative charge confront the cloud bottom of the thundercloud C.

  As a result, upward streamers are unlikely to occur in the vicinity, and as a result, lightning strikes are suppressed.

  Here, the negative charge of the second electrode body 6 is caused by the fact that the lightning-suppressing lightning arresting means 4 is installed above the intersection S, so that the lightning-suppressing lightning-protecting means 4 has a circular shape. Span the territory.

  Then, by adjusting the installation height or the like of the lightning suppression type lightning protection means 4, a wide lightning protection region surrounding the plurality of traffic lights 3 is formed around the intersection S as indicated by reference numeral A in FIG. can do.

  Since the traffic light 3 is positioned in the lightning protection area A thus formed, it is possible to prevent the traffic light 3 from being damaged by lightning.

  As a result, it is possible to protect the traffic light 3 from lightning and to ensure that it is turned on, and to prevent disturbance of traffic control at the intersection S.

  In this embodiment, the power source of the traffic light 3 is a self-supporting power source using the photovoltaic power generation panel 12, and this power source is also disposed in the lightning strike protection area A. Damage can also be prevented, and power supply to the traffic light 3 can be ensured reliably.

  From this point as well, it is possible to prevent the traffic control signal system 1 from functioning when a lightning strike occurs, and to prevent traffic jams and accidents at the intersection S.

  The various shapes, dimensions, and the like of the constituent members shown in the embodiments are merely examples, and various changes can be made based on design requirements and the like.

  For example, although the example in which the lightning suppression type lightning protection means 4 is provided in one signal device 3 is shown, it can also be provided in each of a plurality of signal devices 3.

  As a result, the lightning protection area A formed by the lightning suppression lightning protection means 4 can be enlarged.

  Moreover, although the solar power generation panel 12, the control box 13, and the like described above are provided for each of the traffic lights 3, they can be provided in one place in the lightning protection area A described above.

  Furthermore, other structural examples of the lightning-suppressing lightning arresting means 4 shown in the embodiment are shown in FIGS.

  In these drawings, a lightning-suppressing lightning arrester indicated by reference numeral 30 includes a substantially bowl-shaped upper electrode body 31 (corresponding to the second electrode body 6 in the embodiment) and a lower electrode body 32 (first electrode body in the embodiment). 5) and an electrical insulator 33 (which is interposed between a peripheral portion of the upper electrode body 31 and a peripheral portion of the lower electrode body 32 and connects them in an insulated state at a predetermined interval) Equivalent to the electrical insulating layer 7 in the embodiment) and a support rod 34 attached to the lower electrode body 32, and the electrical insulator 33 has a peripheral edge of the upper electrode body 31, as shown in FIG. A cylindrical portion 33a connected to the peripheral portion of the lower electrode body 32 and covering between the peripheral portions, an annular flange portion 33b provided on the inner periphery of the cylindrical portion 33a, and the cylindrical portion 33a Of the cylindrical portion 33a It has a configuration including a cover portion 33c that covers the periphery.

  The lightning-suppressing type lightning arrester 30 configured as described above is installed in a state of being grounded by the support rod 34.

  When a positive charge is distributed to the ground E due to the approach of the thundercloud C, the lower electrode body 32 grounded to the ground E via the support rod 34 also has a positive charge, and the lower electrode body 32 has the electric charge. The upper electrode body 31 facing the insulator 33 is negatively charged.

  As a result, it is possible to obtain the same operation as that of the lightning-suppressing lightning protection means 4 of the above-described embodiment.

DESCRIPTION OF SYMBOLS 1 Traffic control signal system 2 Support | pillar 3 Signal 4 Lightning suppression type lightning protection means 5 1st electrode body 6 2nd electrode body 6a 2nd electrode structure 6b 2nd electrode structure 7 Electrical insulation layer 7a Lower spacer 7b Upper spacer 8 Nut 9 Support rod 10 Lock nut 11 Through hole 12 Solar power generation panel 13 Control box 14 Secondary battery 15 Controller 16 Transceiver 17 I / O interface 18 Charging control means 19 Lighting control means 20 Lighting synchronization means 21 Antenna 30 Lightning suppression type lightning protection Means 31 Upper electrode body 32 Lower electrode body 33 Electrical insulator 33a Cylindrical portion 33b Gutter portion 33c Cover portion 34 Support rod A Lightning protection area C Thundercloud E Ground S Intersection

The traffic control traffic signal system according to the present invention is based on the above-mentioned demand, and distributes a negative charge above the plurality of traffic lights at the intersection where a plurality of traffic lights are installed, and around the intersection . A lightning suppression type lightning arrester that suppresses lightning strikes is installed, and at least one lightning suppression type lightning arrester is provided for the plurality of traffic lights, and a circular shape centering on one lightning suppression type lightning arrester. The lightning protection area is adjusted to an installation height that surrounds a plurality of traffic lights .

Claims (9)

  A lightning suppression type lightning arrester that distributes negative charges above the plurality of traffic lights and suppresses lightning strikes around the traffic lights, etc. is installed at an intersection where a plurality of traffic lights are installed. Traffic control traffic signal system.   The lightning-suppressing type lightning arrester is constituted by a capacitor including a grounded first electrode body and a second electrode body opposed to the first electrode body through an electrical insulating layer. The traffic control traffic signal system according to claim 1.   The traffic signal system according to claim 1 or 2, wherein the lightning suppression type lightning protection means is attached to the traffic signal.   The traffic control traffic signal system according to claim 1 or 2, wherein the lightning suppression type lightning arrester is attached to each of the plurality of traffic signals.   The secondary battery which stores the electric power for lighting of the said signal apparatus, and the photovoltaic power generation panel which converts solar energy into the electric power which charges the said secondary battery are provided. A traffic control signal system according to any one of the above.   The traffic signal system according to claim 5, wherein the secondary battery and the photovoltaic power generation panel are provided in each of the plurality of traffic lights.   The controller for controlling charging of the secondary battery by the photovoltaic power generation panel and controlling supply of lighting power to the traffic light is provided. Traffic signal system for traffic control.   The traffic controller traffic signal system according to claim 7, wherein the controller is provided in each of the plurality of traffic lights. The controller is provided with a lighting synchronization means for controlling a lighting mode among the plurality of traffic lights, and each of the traffic lights is provided with a transceiver for transmitting and receiving a control signal transmitted from the lighting synchronization means. The traffic signal system for traffic control according to claim 8, wherein