JP4461477B2 - Intersection lighting device - Google Patents

Description

  More particularly, the present invention relates to an intersection illumination device capable of increasing safety at an intersection.

  In general, in order to recognize automobiles other than the own vehicle at intersections, horns and traveling vehicle lights are used in addition to illumination lights. In order to recognize pedestrians on pedestrian crossings, lighting and vehicle lights are used at night. In some pedestrian crossings, when a vehicle approaches, a signal from a sensor is received to lighten or flash the lighting by dimming.

JP 2001-338773 (FIG. 2) JP-A-6-173227 (FIG. 1)

According to past survey reports, accidents that occur at the above-mentioned intersection facilities frequently occur at intersections in densely populated areas and at intersections where lighting devices are incomplete and it is difficult to see objects. In particular, the lack of illuminance near the center of the intersection causes serious accidents. In addition, there are many cases where a pedestrian cannot be recognized by a driver of a vehicle or a recognition delay leads to an accident due to insufficient illuminance in the vicinity of a pedestrian crossing and a sidewalk waiting for crossing. Also, if there is little difference in illuminance between the continuous illumination part of the road and the intersection, it will be delayed for the driver of the vehicle to recognize the situation in the intersection, causing an accident at the intersection facility.
From such a background, for example, as shown in Patent Document 1, an invention that alerts a person who a vehicle driver crosses, and as shown in Patent Document 2, a right-turn vehicle at an intersection is detected to prevent a collision accident. There is an invention to do.

  The present invention has been invented in view of the above points, and solves the lack of illuminance near the center of the intersection and the vicinity of the pedestrian crossing and the sidewalk waiting for crossing, and the situation in the vicinity of the intersection where the driver of the vehicle includes the inside of the intersection It is an object of the present invention to provide an intersection lighting device that can accurately recognize and prevent accidents at intersection facilities.

In order to solve the above problems, the present invention has the following configuration. [Claim 1] Intersection illumination with a pedestrian crossing, in which a reflector is provided in the interior of the luminaire body, and a luminaire located inside the reflector is mounted with a light source at the corner of the intersection Relates to the device.
The reflecting mirror is configured to project the irradiation light toward the center of the intersection, the irradiation light toward the adjacent pedestrian crossing, and the irradiation light that illuminates the area behind.
In addition, the irradiation light that combines the reflected light from the reflecting surface of the reflecting mirror and the direct light from the light source in each lighting fixture arranged at the corner of the intersection is the irradiation light toward the adjacent pedestrian crossing and the area behind it Is configured so that the irradiation light toward the center of the intersection is maximized, and the uniformity of the horizontal illuminance inside the intersection is increased .

According to a second aspect of the present invention, in the intersection illumination device according to the first aspect, the irradiation light that is a combination of the reflected light from the reflecting surface of the reflecting mirror and the direct light from the light source is 55 percent toward the center of the intersection. It is constituted as follows.

According to a third aspect of the present invention, in the intersection illumination device according to the first aspect, the reflecting mirror includes an upper / back reflecting surface located on the back surface of the light source from a top surface located above the light source, and both reflecting surfaces located on both sides of the light source. The front side reflection surface located on the front side of the light source and the front reflection surface located on the front side of the light source are integrally configured.
In addition, the irradiation light on the upper and rear reflection surfaces is mainly configured to go from the direct lower direction of the lighting fixture to the center of the intersection, and the irradiation light on both side reflection surfaces is mainly configured to go to the center of the pedestrian crossing at the intersection, The irradiation light of the front side reflection surface is mainly configured to be directed to the adjacent pedestrian crossing and the standby unit, and the irradiation light of the front reflection surface is mainly configured to irradiate the rear of the lighting fixture .

Claim 4, and at the intersection lighting device請Motomeko 1 to claim 3, wherein the luminaire to be used for continuous illumination range of the road, the shape and size of the lighting fixture to be used at the intersection lighting the same or road When the lighting equipment used for the continuous lighting range and the lighting equipment used for the intersection lighting are configured with the same wattage, the brightness should be equal to or greater than the irradiation range of the continuous lighting section. It is configured to illuminate and increase the uniformity of the horizontal illuminance inside the intersection .

According to the first to fourth aspects of the present invention, the vehicle driver can recognize the presence and shape of the intersection, and can accurately confirm the presence of other vehicles, the presence of pedestrians, bicycles, and the like.

  According to the invention of the above configuration, the lack of illuminance in the vicinity of the intersection and in the vicinity of the pedestrian crossing and the sidewalk waiting for crossing is resolved, and the vehicle driver accurately recognizes the situation in the vicinity of the intersection including the inside of the intersection, Accidents at intersection facilities can be prevented.

  Next, the best mode for carrying out the present invention will be described.

  FIG. 1 is a plan view of an intersection illumination device according to the present invention. In FIG. 1, 1 indicates an intersection of a crossroad, for example, and the road width is configured to have a width of 16 m, for example. Reference numeral 2 denotes a pedestrian crossing that is attached to the intersection and is provided at four target positions. A lighting fixture 3 is provided at the corner of the intersection. The lighting fixture is provided at a height of about 10 m by a column. In addition, a high-pressure discharge lamp of about 20,000 lm is mounted inside the lighting fixture.

1 to 8, reference numeral 10 denotes a luminaire main body constituting the luminaire 3, which supports the front glass 11. Reference numeral 12 denotes a lid configured to open and close upward relative to the luminaire body 10. Reference numeral 13 denotes a reflecting mirror provided inside the lighting fixture body 10. As shown in FIG. 1, the illuminating light from the luminaire is roughly divided into an illuminating light 14 directed toward the center of the intersection, an illuminating light 15 directed on the adjacent pedestrian crossing, and an illuminating light 16 that illuminates the area behind. It is configured. Further, as shown in FIGS. 1 and 7, the entire light distribution from each lighting fixture is configured to have a fan shape on the irradiated surface.

As shown in FIG. 4, the reflecting mirror 13 includes upper and rear reflecting surfaces 20 located on the back surface of the light source from the top surface located on the upper side of the light source, and both side reflecting surfaces 21 located on both sides of the light source. The front side reflection surface 22 is located on the front side of the light source, and the front reflection surface 23 is located on the front side of the light source.
As shown in FIG. 7, the irradiation light of the upper and rear reflection surfaces 20 is mainly configured to go from the direction directly below the lighting fixture to the center 30 of the intersection, and the irradiation light of the both-side reflection surfaces 21 mainly crosses the intersection. The illumination light from the front side reflection surface 22 is mainly directed to the adjacent pedestrian crossing and the standby unit 32, and the illumination light from the front reflection surface 23 is mainly a lighting fixture. It is comprised so that back 33 may be irradiated. The reflecting mirror is made of, for example, an aluminum material. The size of the reflecting mirror is configured such that the vertical dimension is 320 mm to 380 mm, the horizontal dimension is 270 mm to 310 mm, and the height is 160 mm to 180 mm.

Further, the irradiation light obtained by combining the reflected light from each reflecting surface and the direct light using the reflecting mirror 13 is 55 percent from the upper and rear reflecting surfaces, 25 percent from both reflecting surfaces, and 10 from the front side reflecting surfaces. It is configured to irradiate at a rate of 10% from the front and front reflecting surfaces. This ratio is measured in a range that falls within the fan-shaped light distribution range on the irradiation surface shown in FIG.
Moreover, if comprised in such a ratio, the uniformity of the horizontal surface illuminance inside the intersection can be increased.

Further, the upper and rear reflecting surfaces 20, the both-side reflecting surface 21, the front side reflecting surface 22, and the front reflecting surface 23 of the reflecting mirror 13 are configured by connecting a plurality of planes and / or a plurality of curved surfaces. . When each reflecting surface is constituted by connecting a plurality of planes and / or a plurality of curved surfaces, reflected light can be effectively controlled.

Further, the upper / back reflecting surface 20, the both-side reflecting surface 21, the front side reflecting surface 22, and the front reflecting surface 23 of the reflecting mirror 13 are integrally formed. If each surface of the reflecting mirror 13 is formed integrally, the reflecting mirror can be easily formed, and a reflecting mirror with uniform accuracy can be configured.

In addition, when the lighting equipment used for the continuous lighting range of the road and the light source of the lighting equipment used for the intersection lighting are configured with the same wattage, the brightness should be equal to or higher than the irradiation range of the continuous lighting section. It is configured to illuminate and increase the uniformity of the horizontal illuminance inside the intersection.
In order to increase the illuminance at the intersection, the lighting fixtures used at both portions are of different shapes. However, a vehicle driver who has traveled toward the intersection from the continuous lighting range of the road may feel uncomfortable if the shape and size of the two lighting fixtures differ greatly, which may hinder driving. Therefore, the lighting fixtures used for the intersection lighting shown in FIGS. 1 and 2 are configured using the same shape and size as the continuous lighting range of the road. In addition, even when the reflecting mirror is formed as described above and the light source is configured using the same wattage as the continuous illumination range of the road, it is illuminated with a brightness equal to or greater than the irradiation range of the continuous illumination unit. Furthermore, the uniformity of the horizontal illuminance inside the intersection can be increased. For example, when the 180-watt high-pressure sodium lamp 40 is mounted as the light source on the lighting apparatus shown in FIGS. 1 and 2, the average horizontal illuminance inside the intersection is about 15 lux. Moreover, the ratio of the minimum horizontal surface and the average horizontal surface illuminance is about 0.4. The light emitting part of the high-pressure sodium lamp 40 is mounted so as to be positioned inside the reflecting mirror 13.

Next, Example 2 will be described with reference to FIG. In the second embodiment, unlike the first embodiment, as shown in FIG. 3, two lighting fixtures are installed at the opposite positions of the intersection of the crossroads. At this time, the road width has a width of, for example, 10 m. The lighting fixture is provided with a height of about 8 m by a support column. The light source is configured by mounting a high-pressure discharge lamp of about 20,000 lm, similar to that shown in the first embodiment.
One lighting fixture is configured in the same manner as the structure shown in the first embodiment. If comprised in this way, like the intersection illumination device shown in Example 1, in addition to maintaining the illuminance, it is possible to improve the illuminance uniformity inside the intersection and the vertical plane illuminance on the pedestrian crossing.

According to the intersection illumination device shown in Example 1 and Example 2 described above,
(A) The vehicle driver can recognize the existence and shape of the intersection, and can accurately confirm the presence of other vehicles, pedestrians, bicycles, and the like.
(B) In addition, the vehicle driver can grasp the position and movement of the vehicle in the intersection, the position and movement of the vehicle approaching the intersection, and can recognize the existence position, speed and course direction of the own vehicle. It is possible to prevent traffic accidents in and near the intersection.
(C) In addition, the pedestrian can recognize the vehicles in the intersection and the vicinity of the intersection, and can prevent the occurrence of an accident due to unreasonable crossing or the like.

1 is a schematic plan view of an intersection illumination device according to the present invention. The schematic plan view when four lighting fixtures are installed in the intersection lighting device according to the present invention. The schematic plan view when installing two lighting fixtures in the intersection illumination device according to the present invention. The bottom view of the reflective mirror accommodated in the intersection lighting device lighting fixture concerning this invention. The side view of the reflective mirror of FIG. The perspective view of the reflective mirror of FIG. The light distribution map of the intersection illumination device which concerns on this invention. The external view which shows the support state of the lighting fixture in the intersection illumination device which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Intersection 2 Pedestrian crossing 3 Lighting fixture 10 Lighting fixture main body 11 Front glass 12 Cover body 13 Reflector 14 Irradiation light 15 toward the center 15 Irradiation light 16 on the adjacent pedestrian crossing Irradiation light 20 for illuminating the area behind Back reflecting surface 21 Both side reflecting surfaces 22 Front side reflecting surface 23 Front reflecting surface 30 Center of intersection 31 Center of pedestrian crossing 32 On pedestrian crossing and standby unit 33 Back of lighting fixture 40 Light source

Claims (4)

In the intersection lighting device with a pedestrian crossing formed by providing a reflecting mirror inside the lighting fixture main body, and placing a lighting fixture located inside the reflecting mirror and mounting a light source at the corner of the intersection ,
The reflector is configured to project irradiation light toward the center of the intersection, irradiation light toward the adjacent pedestrian crossing, and irradiation light that illuminates the area behind.
In addition, the irradiation light that combines the reflected light from the reflecting surface of the reflecting mirror and the direct light from the light source in each lighting fixture arranged at the corner of the intersection is the irradiation light toward the adjacent pedestrian crossing and the area behind it The intersection illumination device is configured such that the irradiation light toward the center of the intersection is maximized with respect to the irradiation light that illuminates the light, and further, the uniformity of the horizontal illuminance within the intersection is increased . The intersection illumination device according to claim 1 , wherein the irradiation light obtained by combining the reflected light from the reflection surface of the reflecting mirror and the direct light from the light source is configured such that the irradiation light toward the center of the intersection is 55% . The reflecting mirror includes an upper / back reflecting surface located on the rear surface of the light source from a top surface located on the upper side of the light source, both side reflecting surfaces located on both sides of the light source, and a front side reflecting surface located on the front side portion of the light source. The front and back reflection surfaces are located in front of the light source, and the light is applied to the upper and rear reflection surfaces mainly from the direction directly below the lighting fixture to the center of the intersection. The illumination light on the surface is mainly directed to the center of the pedestrian crossing at the intersection, and the illumination light on the front side reflection surface is mainly directed on the nearby pedestrian crossing and to the standby part, The intersection illumination device according to claim 1, wherein the irradiation light is configured to mainly irradiate the rear of the lighting fixture . The shape and size of the lighting fixture used for the continuous lighting range of the road and the lighting fixture used for the intersection lighting are the same, and the lighting fixture used for the continuous lighting range of the road and the lighting fixture used for the intersection lighting When the light source to be used is configured with the same wattage, it illuminates at a brightness equal to or higher than the irradiation range of the continuous illumination unit, and increases the uniformity of the horizontal illuminance inside the intersection. The intersection illumination device according to any one of claims 1 to 3.

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