JP3349726B2 - Roadway lighting system for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for a vehicle road, and more particularly to an improvement of a street light installed along a vehicle road.

[0002]

2. Description of the Related Art Conventionally, lighting of a vehicle road is performed by street lights provided along the road.

[0003]

However, the conventional street light has a problem that the power consumption is extremely large because the street light is always lit at night even when the vehicle is not running at all.

On the other hand, Japanese Patent Application Laid-Open No. Sho 62-55799 discloses an apparatus for detecting a vehicle approaching an intersection near a road intersection and transmitting the detected information to another vehicle. Is disclosed. By applying such a technique, it is conceivable to turn on the street light only when the vehicle is running. But,
In this case, a large number of devices having a detection function and a transmission function must be provided on the road side, which is costly and has many problems in terms of maintenance, and it is not easy to implement.

The present invention has been made in view of the above points, and an object of the present invention is to provide a vehicle having a relatively simple configuration so that a street light along a road is turned on only when the vehicle is running. It is an object of the present invention to provide a vehicle road lighting device capable of effectively saving power consumption while sufficiently lighting a road ahead.

[0006]

In order to achieve the above object, an invention according to claim 1 is mounted on a vehicle as an illumination device for a road for vehicles, and emits electromagnetic waves toward the front of the vehicle. Means, a plurality of street lights installed along the vehicle road on which the vehicle travels, and a plurality of street lights provided respectively at the lower portions of the posts of the respective street lights, and when receiving the electromagnetic waves emitted from the electromagnetic wave emitting means, A detector that turns on the street light for a predetermined time, and the street light in front of the detector is sequentially turned on as the vehicle travels ,
The vehicle road has two opposite lanes and is curved
If there is a street light installed outside the curve of the road,
Two detectors are provided, one of which is
The tractor uses the street light on the lane near the street light.
It is located facing the approaching vehicle and
When a magnetic wave is received, the street light on the detector
The other detector
-Approach the street light in the lane far from the street light
Is located facing the incoming vehicle and emits electromagnetic waves from the vehicle.
When it is received, the street light and the road on the side with the detector
To turn on the street light located on the opposite side for a predetermined time.
It is shall have been kicked.

[0007]

According to the above construction, according to the first aspect of the present invention,
When a vehicle travels on a road, electromagnetic waves (light waves or radio waves) are emitted forward from electromagnetic wave emitting means of the vehicle,
The detector below the support of each street light installed along the road in front of the vehicle receives the electromagnetic force as the vehicle travels, and turns on a specific street light for a predetermined time. The lights are sequentially turned on as the vehicle travels.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show a lighting device for a vehicle road according to an embodiment of the present invention. In the case of this embodiment, the vehicle road R has two opposite lanes R1 and R2.

In FIG. 1, reference numerals A and B denote vehicles which travel in opposite lanes R1 and R2 on a road R, respectively. These vehicles A and B have laser light emitting devices 1 as electromagnetic wave emitting means, respectively. , 1 are mounted. The laser beam emitting device 1 is conventionally known, and its specific configuration is not described. However, the laser beam is emitted from the beam emitting device 1 in a horizontal direction at a predetermined angle in front of the vehicle body with respect to the center line of the vehicle. Fired over the range of θ.

Reference numerals 2a, 2b and 2c denote a plurality of street lights provided along the road R.
To 2c, as shown in FIG.
And a hollow pillar 4 for supporting the street light body 3. Among the street lights 2a to 2c, the street light 2 installed outside the curved portion of the curved portion of the road R.
a (shown by a black circle in FIG. 1), as shown in FIG.
a, 5b are provided. Each of the detectors 5a, 5
Each of b is disposed in the column 4 and is provided so as to face the opposite side outside the column 4 through the laser light transmitting glass 6 fitted into the outer wall of the column 4. For more information,
One detector 5a is located on the lane R1 or R2 near the street light 2a toward the vehicle A or B approaching the street light 2a, and the laser light of the vehicle A or B It is electrically connected so that the streetlight main body 3 of the streetlight 2a is turned on when the laser beam emitted from the launching device 1 is received. Also, the other detector 5b
Is located on the lane R2 or R1 on the far side of the street light 2a toward the vehicle B or A approaching the street light 2a and from the laser light emitting device 1 of the vehicle B or A. When the emitted laser beam is received, the streetlight 2 is electrically connected to the streetlight 2a on the opposite side of the streetlight 2a with respect to the road, that is, the streetlight 2c on the inside of the corner.

In the street lamp 2c (shown by a white circle in FIG. 1) installed inside the curve at the corner of the road, no detector is provided at all as in the case of the street lamp 2a outside the curve. Further, in a street light 2b (shown by a circle in FIG. 1) installed on a straight portion of the road R, one laser light detector is provided at a lower portion of the support 4 although not shown. The detector is located on the lane R1 or R2 on the side close to the street light 2b toward the vehicle A or B approaching the street light 2b, and the laser light emitting device 1 of the vehicle A or B Is electrically connected to turn on the street light main body 3 of the street light 2b on the side with the detector when receiving the laser beam emitted from the detector.

Next, the operation and effect of the above embodiment will be described with reference to FIG. 4 showing a state in which vehicles A and B pass through a corner of a road R. In FIG. 4, suffixes 1 to 12 are respectively assigned to the twelve street lights 2a along the outside of the curve and the twelve street lights 2c along the inside of the curve.
Add 12 to distinguish. In addition, these street lights 2a, 2b
Among them, those that are turned on are indicated by black circles, and those that are turned off are indicated by white circles.

When the vehicle A travels on the lane R1 outside the curve at the corner of the road, laser light is emitted forward from the laser light emitting device 1 of the vehicle A over a range of a predetermined angle θ in the horizontal direction. The road R within the range of the angle θ
In each of the street lights 2a7 to 2a10 along the outside of the curve, the laser light detector 5a at one of the lower portions of the columns 4 (the side positioned toward the vehicle A) receives the laser light and receives the laser light. 3 lights up for a predetermined time. As the vehicle A travels, the area of the laser light emitted from the laser light emitting device 1 of the vehicle A also sequentially moves in the traveling direction of the vehicle A. It will light up sequentially.

The lane R inside the curve at the corner of the road
2 When the vehicle B travels above, the laser light from the laser light emitting device 1 of the vehicle B is directed forward by a predetermined angle θ
Is fired over the range of and is within the range of the angle θ,
In each of the street lights 2a4 to 2a8 along the outside of the curve of the road R, the other laser beam detector 5b (the side located toward the vehicle B) below the support 4 receives the laser beam, The streetlight main bodies 3 of the streetlights 2c4 to 2c8 inside the curved portions of the corners facing the streetlights 2a4 to 2a8 with the road interposed therebetween are lit for a predetermined time. Then, as the vehicle B travels, the area of the laser light emitted from the laser light emitting device 1 of the vehicle B also sequentially moves in the traveling direction of the vehicle B. It will light up sequentially.

As described above, the street lights 2a to 2c installed along the road are not always lit at night as in the related art, but the street lights 2a located ahead of the vehicles A and B when the vehicles A and B run. 2c are sequentially turned on as the vehicles A and B run, so that it is possible to save the power consumption by eliminating the unnecessary lighting of the street lights when unnecessary while ensuring sufficient illumination of the road ahead of the vehicles. it can.

Further, the lighting device for the vehicle road is a road R.
As a side component, in addition to the street lights 2a to 2c, only the laser beam detector 6 is provided below the support post 4, so that maintenance and management thereof can be easily performed, and the cost is reduced. In addition, it is inexpensive, and is advantageous in realizing the implementation.

In the above embodiment, the case where the laser light emitting device 1 is provided as the electromagnetic wave emitting means for emitting the electromagnetic wave toward the front of the vehicles A and B has been described. Alternatively, a headlight mounted on a normal vehicle may be used, and a streetlight along a road may be sequentially turned on by a detector receiving the light of the headlight as the vehicle travels. In addition, it goes without saying that a device that emits electromagnetic waves (light waves or radio waves) other than laser light may be used.

[0019]

As described above, according to the vehicle road lighting device of the present invention, only when the vehicle is running, the street lights along the road in front of the vehicle are sequentially turned on in response to the electromagnetic waves from the vehicle. In addition, it is possible to save the power consumption by eliminating unnecessary lighting of the street lights while ensuring sufficient illumination of the road ahead of the vehicle. In addition, on the road side, only a detector is provided at the lower part of the column along with the street light, and maintenance and management thereof are easy and inexpensive, which is advantageous for implementation. Things.

[Brief description of the drawings]

FIG. 1 is a layout view of a lighting device for a vehicle road according to an embodiment of the present invention.

FIG. 2 is a side view showing street lights on both sides of a road.

FIG. 3 is an enlarged sectional view taken along line AA of FIG. 2;

FIG. 4 is a diagram for explaining the operation of the lighting device.

[Explanation of symbols]

 R vehicle road R1, R2 lane A, B vehicle 1 laser light emitting device (electromagnetic wave emitting means) 2a, 2b, 2c street light 4 support 5a, 5b laser light detector

Continuing on the front page (72) Inventor Kenichi Okuda 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Corporation (72) Inventor Yasunori Yamamoto 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Corporation (72) Inventor Tomohiko Adachi 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Inside Mazda Corporation (56) References JP-A-4-92393 (JP, A) JP-A-4-92396 (JP, A) JP-A-5-13174 (JP, A) JP-A-5-321215 (JP, A) JP-A-6-52701 (JP, A) JP-A-4-24196 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H05B 37/02 E01F 9/00 G08G 1/095

Claims (1)

(57) [Claims] 1. An electromagnetic wave emitting means mounted on a vehicle and emitting electromagnetic waves toward the front of the vehicle, a plurality of street lights installed along a vehicle road on which the vehicle runs, and each of the street lights A detector that is provided at the lower part of the column, and turns on a specific street light for a predetermined time when receiving an electromagnetic wave emitted from the electromagnetic wave emitting means, and the street light in front of the detector is sequentially turned on as the vehicle travels is configured to, curved has a two-lane road vehicle faces and curved
If there is a street light installed outside the curve of the road,
Two detectors are provided, one of which is
The tractor uses the street light on the lane near the street light.
It is located facing the approaching vehicle and
When a magnetic wave is received, the street light on the detector
The other detector
-Approach the street light in the lane far from the street light
Is located facing the incoming vehicle and emits electromagnetic waves from the vehicle.
When it is received, the street light and the road on the side with the detector
To turn on the street light located on the opposite side for a predetermined time.
Lighting device of a road vehicle, characterized by being kicked.