JP2012146527A - Road lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a road lighting system in which emergency can be clearly recognized as more serious to a driver and the driver can meet such emergency immediately so as to prepare himself against a traffic jam in front.SOLUTION: The road lighting system is provided with a case 100 located at a balustrade part 900 of a road R, a lighting part 200 which is housed in this case 100 and irradiates light to a road surface, a sensor part 400 which is housed in the case 100 and detects a speed of a vehicle running on the road R, and an attention-rousing light emitting part 300 which is housed in the case 100 and emits light when the speed of the vehicle detected by the sensor part 400 becomes a predetermined speed or slower. The light emitted from the attention-rousing light emitting part 300 has a different hue from that of the light emitted from the lighting part 200.

Description

  The present invention relates to a road lighting device installed at a rail of a road.

  For example, a high rail is often provided on the shoulder of an expressway that is about the height of an automobile. The railing may be provided with a lighting device that irradiates light on the road surface at night.

  As disclosed in Japanese Patent Application Laid-Open No. 2005-327748 (Patent Document 1), such an illumination device includes “an instrument body having an opening on one side surface in the longitudinal direction and both ends opened, and both ends of the instrument body. An end plate attached to the opening, a U-shaped cross-section, a reinforcing plate that fixes one side to the end plate and the other side to the instrument body, and is housed in the instrument body and disposed opposite the opening A balustrade lighting fixture comprising: a light source lamp that is provided; and an opening cover that is disposed so as to cover the opening and is attached to the fixture main body. It has become.

  In addition, in this lighting device (railway lighting fixture), when an emergency lighting control signal is received, the light source lamp is subjected to emergency point reduction control. For example, the accident section is all light and the illuminance is increased from other parts, It is also considered to turn on the light source lamps alternately.

JP 2005-327748 A

However, even if the above-described lighting device (railway lighting fixture) performs emergency lighting control in an emergency such as the occurrence of a traffic accident, it only changes the illuminance of the light source lamp that is normally used, or performs on / off control. , It does not make the driver more clearly aware that it is an emergency.
In addition, the emergency lighting control signal is input from an ITV camera or a disaster prevention control device arranged at various places, and there is a point of lack of immediate response.
Furthermore, emergency lighting control cannot be performed for a forward traffic jam that causes a large traffic accident.

  The present invention was devised in view of the above circumstances, and allows a driver to clearly recognize that it is an emergency, can respond immediately in an emergency, and can also handle forward traffic jams. It aims at providing the illuminating device.

  A road lighting device according to the present invention includes a casing installed in a railing section of a road, an illumination section that is stored in the casing and irradiates light on a road surface of the road, and is stored in the casing. A sensor unit for detecting the speed of a traveling vehicle; and a warning light-emitting unit that is stored in the housing and emits light when the speed of the vehicle detected by the sensor unit is equal to or lower than a preset speed. The light emitted from the warning light emitting unit has a different hue from the light emitted from the illumination unit.

  In addition, the illumination unit of the road illumination device according to the present invention is configured so that the illuminance is lower in a preset time zone than in other time zones, and when the warning light emitting unit emits light, the illumination unit is fully lit. It is desirable that

  Further, the light from the alert light emitting unit is red light.

The road lighting device according to the present invention has a warning light emitting unit that indicates to the driver of the car when the speed of the car traveling on the road is equal to or lower than a preset speed, for example, when a traffic jam occurs. Emits light.
For this reason, the driver of the car can quickly know that there is a traffic jam ahead, and can prevent the accident by suppressing the speed of the own vehicle.

  Moreover, the light from the warning light emitting unit is set to have a different hue from the light of the lighting unit incorporated together, so that the light from the warning light emitting unit is not mixed into the light of the lighting unit. Absent. In addition, since the vehicle speed detection and the alarm device (speed lamp etc.) regarding the speed are incorporated together, the cost can be reduced rather than installing separately, and the construction can be simplified and shortened. .

It is a schematic front view which shows the state by which the road illuminating device which concerns on embodiment of this invention was installed in the handrail part. 1 is a schematic side cross-sectional view of a road lighting device according to an embodiment of the present invention. It is a schematic block diagram of the illuminating device for roads concerning embodiment of this invention. It is a schematic block diagram of the illuminating device for roads concerning embodiment of this invention.

  A road lighting apparatus A according to an embodiment of the present invention includes a housing 100 installed in a railing 900 of a road R, and an illumination unit 200 that is stored in the housing 100 and irradiates light on the road surface of the road R. And a sensor unit 400 that detects the speed of the automobile that is stored in the housing 100 and travels on the road R, and the speed of the automobile that is stored in the housing 100 and detected by the sensor unit 400 is a preset speed. The light emitting unit 300 for alerting that emits light when it is below is provided, and the light emitted from the light emitting unit 300 for alerting has a different hue from the light emitted from the illumination unit 200.

The casing 100 is installed on the top surface of the rail section 900 of the road R, is formed in a horizontally long rectangular parallelepiped shape with a stainless steel plate, has an opening 110 on the front surface facing the road R, and is transparent. It is covered with a transparent cover 120 made of a synthetic resin.
At both ends of the bottom surface of the casing 100, flat mounting legs 130 projecting laterally from the casing 100 are welded. The mounting leg 130 is used to install the casing 100 on the rail section 900.

  Inside the casing 100 are stored an illumination unit 200, a sensor unit 400, a warning light emitting unit 300, and a control unit 500 for controlling them. In particular, in the sensor unit 400, the sensing unit 410 is provided at a position where the sensing vehicle 410 can be seen from the transparent cover 120 so that a traveling automobile can be seen.

  The illumination unit 200 is a line-shaped LED element module, and is attached to the inside of the housing 100. The light from the illumination unit 200 is preferably white light. The light from the illuminating unit 200 does not go directly to the outside of the housing 100, but goes to the reflecting plate 210 that is attached to the inside of the housing 100 and is subjected to the mirror surface treatment. The reflector 210 reflects light from the illumination unit 200 toward the road surface of the road R. In order to prevent danger, the reflector 210 prevents the light from the illumination unit 200 from being directly irradiated toward the driver of the traveling vehicle.

The lighting unit 200 divides a day into three time zones, and performs lighting that matches the time zones. It is turned off during the daytime (sunrise to sunset), lights 100% during the night (after sunset to 22:00), and lights 50% during the midnight (22:00 to sunrise).
This division of time zone is operated by external input from the field, but can be set by the control unit 500 and can be arbitrarily set according to the installation area and season, and is limited to the above. It goes without saying that it is not done.
In addition, 100% lighting means a lighting state when the rated power is supplied, and 50% lighting means a lighting state that is ½ of that.

On the other hand, the attention light emitting unit 300 is also configured by a line-shaped white LED element module and a red panel provided on the front side of the LED element module, and is attached to the inside of the housing 100. However, the light emitted from the warning light emitting unit 300 has a different hue from the light from the illumination unit 200 and is red light. If the light from the alert light emitting unit 300 is different in hue from the light from the illumination unit 200, the light from the alert light emitting unit 300 will not be mixed into the light from the illumination unit 200 and can be surely seen by the driver. become.
In particular, red light is suitable for alerting the driver.

  The sensor unit 400 includes a sensing unit 410 that is an infrared sensor, and a determination unit 420 that receives a signal from the sensing unit 410 and determines whether the speed of the automobile is equal to or lower than a preset speed. is doing. The sensor unit 400 is also stored inside the housing 100. If the determination unit 420 determines that the speed of the automobile is equal to or less than a preset speed, the determination light emitting unit 300 is turned on or reduced through the control unit 500. Note that lighting or point reduction of the alert light emitting unit 300 can be arbitrarily selected.

  Further, the output of the determination unit 420 is introduced not only into the alerting unit light emitting unit 300 but also into the illumination unit 200 via the control unit 500. In other words, when it is determined that the speed of the automobile is equal to or lower than a preset speed at midnight when 50% lighting is performed, the illumination unit 200 switches from 50% lighting to 100% lighting.

  By the way, a threshold value indicating whether or not there is a traffic jam may be used for the preset speed. Generally, traffic congestion occurs when the traveling speed is 20 kh / h or less on a general road and the traveling speed is 40 kh / h on a highway. Since this speed is used in the traffic volume statistics table of the Metropolitan Police Department, the present invention is not limited to such a numerical value, and can be arbitrarily changed.

  A plurality of road lighting devices A configured in this way are installed in the balustrade section 900 every 3 to 5 m, and all operate synchronously.

The operation of the road illumination device thus configured is as follows.
(1) Daytime zone In the daytime zone, all operations are turned off due to power failure.
(2) Night zone In the night zone, the illumination unit 200 is lit 100%. Then, when the speed of the automobile is equal to or lower than a preset speed, that is, when it is determined that an emergency has occurred, the alert light emitting unit 300 is also turned on or reduced.
And if the speed of a motor vehicle becomes more than the preset speed, the alert light emission part 300 will be turned off. In addition, 100% lighting of the illumination part 200 is continued as it is.
(3) Midnight Zone In the late night zone, the illumination unit 200 is lit by 50%. And if the speed of a motor vehicle becomes below preset speed, ie, when it is judged that the emergency situation occurred, the alert light emission part 300 will be lighted or reduced, and the illumination part 200 will also light 100%.
And if the speed of a motor vehicle becomes more than the preset speed, the alert light emission part 300 will be turned off and the illumination part 200 will return from 100% lighting to 50% lighting.
In addition, when the speed of the automobile is equal to or lower than a preset speed, the illumination unit 200 is turned on 100%, so that visibility in front of traffic jams can be improved.

For example, it is assumed that there is a traffic jam on the exit side of the curve as shown in FIG. In FIG. 4, C1 represents the last car in the queue of traffic jams, and C2 is the car that is about to enter the curve.
(1) Daytime day It does not work because it is turned off due to power interruption.
(2) Night Zone The lighting units 200 of all road lighting devices A are lit 100%. In this state, even if a traffic jam occurs on the exit side of the curve, it is not visually recognized by the driver of the automobile C2.
However, among the plurality of road illumination devices A installed in the curb rail 900, the road illumination device A1 on the exit side detects a traffic jam. As a result, all the road lighting devices A turn on or light down the alert light emitting unit 300 in synchronization.
The red light from the warning light emitting unit 300 is visually recognized by the driver of the automobile C2, and the speed of the automobile C2 is suppressed by the driver. In addition, even if the alerting light emitting unit 300 is turned on or reduced, the lighting unit 200 does not change. For this reason, the last car C1 in the row of traffic jams is easily visually recognized by the driver of the car C2.
When the traffic jam is eliminated, the warning light emitting units 300 of all the road lighting devices A are turned off.
(3) Late night zone The lighting units 200 of all road lighting devices A are lit by 50%. In this state, even if a traffic jam occurs on the exit side of the curve, it is not visually recognized by the driver of the automobile C2.
However, among the plurality of road illumination devices A installed in the curb rail 900, the road illumination device A1 on the exit side detects a traffic jam. As a result, all the road lighting devices A return the lighting unit 200 to 100% lighting and simultaneously turn on or reduce the warning light emitting unit 300.
The red light from the warning light emitting unit 300 is visually recognized by the driver of the automobile C2, and the speed of the automobile C2 is suppressed by the driver. Moreover, since the illumination part 200 returns to 100% lighting, the forward visibility in which the traffic congestion has generate | occur | produced improves. For this reason, the last car C1 in the row of traffic jams is easily visually recognized by the driver of the car C2.
When the traffic jam is eliminated, the illumination unit 200 returns to 50% lighting and the attention light emitting unit 300 is turned off.

That is, when a traffic jam occurs in any time zone, the alert light emitting unit 300 is turned on or reduced, and alerts the driver of the car C2 who is about to enter the curve.
In particular, the road illumination device A is effective in a curve.
That is, as shown in FIG. 4, when there is a traffic jam at the end of the curve that cannot be directly seen by the driver of the car C2 before entering the curve, all roads installed in front of the curve When the warning light emitting unit 300 of the lighting device A is turned on or pointed off, the driver of the car C2 is notified that a traffic jam has occurred at the end of the curve. Since the driver can detect the occurrence of traffic congestion from the notice, the speed of the own vehicle (automobile C2) can be suppressed when entering the curve, and the occurrence of a collision accident can be prevented.

There is already an indication of the existence of the curve to the driver of the car trying to enter the curve by constantly lighting or reducing the red light on the curve. The driver cannot receive the information even if there is a traffic jam ahead of the curve that cannot be directly seen.
On the other hand, in the case of this road lighting device A, the warning light emitting unit 300 can be turned on or reduced only when a traffic jam occurs, so that the driver can recognize the traffic jam more. It becomes easy.

  In addition, when an accident or the like occurs at other places such as the entrance side instead of the exit side of the curve, and the automobile stops at the position of the automobile C1 or falls below a preset speed, the road lighting device A is described above. Operates in the same way as traffic jams occur on the exit side of the curve.

In the above-described embodiment, the alert light emitting unit 300 emits red light, but it is needless to say that light of other colors may be used. However, the hue of the light emitted from the illumination unit 200 needs to be different from that of the light emitted from the illumination unit 200 so as not to be mixed into the light of the illumination unit 200.
Moreover, although the alert light emission part 300 was made into the line-shaped LED element module, other types which are not line shapes, for example, a round shape, a rectangle, etc., may be sufficient.
Furthermore, although the sensing unit 410 of the sensor unit 400 is an infrared sensor, it is needless to say that other sensors may be used as long as they are non-contact type speed sensors.

Next, a road lighting device according to another embodiment of the present invention will be described.
In the above-described road lighting device A, when the speed of the vehicle is equal to or lower than a preset speed, that is, when a traffic jam occurs, the warning light emitting unit 300 is turned on or reduced. In the lighting device for lighting, when the speed of the automobile is equal to or higher than a preset speed, the attention light emitting unit 300 is turned on or reduced.

Since the configuration of each part in the road lighting device is the same as that described above, the detailed description thereof will be omitted and the operation will be described.
(1) Daytime zone In the daytime zone, all operations are turned off in the daytime zone due to power interruption.
(2) Night zone In the night zone, the illumination unit 200 is lit 100%. And if the speed of a motor vehicle becomes more than the preset speed, the alerting light emission part 300 will also be lighted or reduced.
And the alerting light emission part 300 continues lighting or dot reduction until a motor vehicle passes the preset area. In addition, 100% lighting of the illumination part 200 is continued as it is.
And if a motor vehicle passes through the preset area, the alert light emission part 300 will be turned off and the illumination part 200 will continue lighting 100%.
Whether or not the automobile passes through a preset section is calculated from the detected speed of the automobile and the distance of the section.
(3) Midnight Zone In the late night zone, the illumination unit 200 is lit by 50%. And if the speed of a motor vehicle becomes more than the preset speed, the attention light emission part 300 will be lighted or reduced, and the illumination part 200 will also light 100%.
And if the speed of a motor vehicle becomes below the preset speed, the alert light emission part 300 will be turned off and the illumination part 200 will return from 100% lighting to 50% lighting.
And the alerting light emission part 300 continues lighting or dot reduction until a motor vehicle passes the preset area. In addition, 100% lighting of the illumination part 200 is continued as it is.
When the vehicle passes through a preset section, the alert light emitting unit 300 is turned off and the lighting unit 200 returns to 50% lighting.
Whether or not the automobile passes through a preset section is calculated from the detected speed of the automobile and the distance of the section.

  In such a road lighting device, when the speed of the vehicle enters at a speed higher than a preset speed (for example, a speed limit), the driver is warned of the danger of overspeeding. Can contribute to reducing traffic accidents.

In the above description, in the daytime period, it is assumed that all the operations are turned off due to power interruption, but the present invention is not limited to this.
That is, even in the daytime period, when the speed of the automobile is equal to or lower than a preset speed, that is, when it is determined that an emergency has occurred, the alert light emitting unit 300 is also turned on or reduced, and the speed of the automobile is reduced. The alert light emitting unit 300 may be turned off when the speed exceeds a preset speed.
The illumination unit 200 may be turned on or off.

DESCRIPTION OF SYMBOLS 100 Case 200 Illumination part 300 Warning light emission part 400 Sensor part 900 Railing part

Claims (3)

  A housing installed in the rail of the road, an illumination unit that illuminates the road surface of the road and is stored in the housing, and a sensor unit that is stored in the housing and detects the speed of the automobile traveling on the road And a warning light-emitting unit that emits light when the speed of the automobile detected by the sensor unit is equal to or lower than a preset speed, and is emitted from the warning light-emitting unit. The road lighting device, wherein the light has a hue different from that of the light emitted from the lighting unit.   3. The road lighting device according to claim 2, wherein the illumination unit is configured to be fully lit when the illuminating unit emits light when the warning light emitting unit emits light in a preset time zone, compared to other time zones. Lighting device.   The road illumination device according to claim 1 or 2, wherein the light emitted from the warning light emitting unit is red light.

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