JP6093155B2 - Lighting device - Google Patents

Description

  The present invention relates to an illumination device installed at a corner cut portion of an intersection.

According to the “Road Lighting Facility Installation Standard” by the Ministry of Land, Infrastructure, Transport and Tourism, the following three are listed as the role of intersection lighting.
i) The existence of an intersection can be seen from a distance.
ii) Other cars, pedestrians, etc. existing near the intersection can be identified from the front of the intersection.
iii) Other automobiles, pedestrians, etc. existing in the intersection can be identified in the intersection.

  An arrangement example of the intersection illumination that satisfies the above requirements is shown in FIG. Conventionally, lighting devices are arranged at four locations (A in the figure) slightly apart from the intersection, and the pedestrian is visually recognized by the silhouette view in which the pedestrian in the intersection illuminates light from the viewer in the opposite direction.

  In recent years, in order to prevent a right-handed accident at an intersection, it has been recommended that an additional lighting device be arranged at a corner cutout (B in the figure) of the intersection. FIG. 2 shows an irradiation range C when the lighting device is installed at the four corner cut portions B. FIG. Each lighting device illuminates the pedestrian crossing C, the sidewalk waiting part D, and further to the central part of the intersection centering on the corner cutting part. As in FIG. 2, Patent Literature 1 discloses a state in which a lighting device installed at a corner cut portion of an intersection illuminates a sidewalk standby unit and a pedestrian crossing.

JP 2006-190624 A

  Compared with the case where the lighting device is installed only at the part A away from the intersection by installing the lighting device at the corner cutout B as described above, the visibility of the pedestrians present in the pedestrian crossing and the sidewalk standby unit Will improve. However, the visibility of a pedestrian traversing a runway outside the intersection (for example, position E in FIG. 2) is not ensured. Normally, when a vehicle travels from this intersection to this position, the lighting suddenly becomes darker than in the intersection, so it is considered that an accident is likely to occur.

  The present invention has been made in view of such a situation, and an object thereof is to increase the visibility of a pedestrian on a pedestrian crossing and to ensure the visibility of a pedestrian or the like traversing a runway outside an intersection. Is to provide.

  An aspect of the present invention is an illuminating device installed at a corner cut portion of an intersection or a pole near the intersection, a vehicle runway located on the opposite side of the corner cut portion across the intersection, and adjacent to the runway Configured to illuminate corner cuts and pedestrian crossings.

  According to this aspect, in order to irradiate the runway of the vehicle located on the opposite side across the intersection of the corner cut portion where the lighting device is installed, a reverse silhouette view in which a pedestrian crossing the runway is illuminated from the near side Thus, the visibility of a pedestrian from a vehicle traveling in or near an intersection is improved.

  A plurality of lamp assemblies having different main optical axes may be configured, or a plurality of lamp units having different main optical axes may be incorporated into one lamp assembly.

  A light emitting diode divided into a plurality of blocks may be used as a light source of the lamp assembly or the lamp unit.

  ADVANTAGE OF THE INVENTION According to this invention, while the visibility of the pedestrian on a pedestrian crossing increases, the visibility of the pedestrian who crosses the runway outside an intersection irregularly improves.

It is an example of arrangement | positioning of the conventional intersection illumination device. It is a figure which shows the irradiation range of the illuminating device of FIG. (A) is an external view of the illuminating device which concerns on one Embodiment of this invention, (b) is a side view of an illuminating device. It is a figure which shows the irradiation range of the 1st lamp assembly of the illuminating device installed in the corner cut part of an intersection. It is a figure which shows the irradiation range of a 2nd lamp assembly in addition to the irradiation range of a 1st lamp assembly. It is a figure which shows the irradiation range of a 3rd lamp assembly in addition to the irradiation range of a 1st and 2nd lamp assembly. It is sectional drawing which shows an example of the lamp unit which comprises a lamp assembly. It is sectional drawing which shows an example of the lamp unit which comprises a lamp assembly. It is sectional drawing which shows an example of the lamp unit which comprises a lamp assembly. It is sectional drawing which shows an example of the lamp unit which comprises a lamp assembly. It is sectional drawing which shows an example of the lamp unit which comprises a lamp assembly.

  FIG. 3A is an external view of the illumination device 10 according to an embodiment of the present invention, and FIG. 3B is a side view of the illumination device 10. The lighting device 10 includes a pole 12 installed at or near a corner of an intersection, a first lamp assembly 14 attached to the top of the pole 12, a second lamp assembly 16, and a first attached to the middle of the pole 12. A three-lamp assembly 18. The lamp assemblies 14, 16, 18 have different irradiation ranges and irradiation directions. Each lamp assembly is constituted by a combination of a plurality of lamp units 20 using light emitting diodes as light sources.

  The first lamp assembly 14 is configured to irradiate the running path of the vehicle located on the opposite side across the intersection of the corner cut section where the lighting device 10 is installed, and the corner cut section and the pedestrian crossing adjacent to the run path. Is done. For this reason, as shown in FIG. 3B, the first lamp assembly 14 is attached to the pole 12 so that the irradiation surface is slightly upward rather than directly below.

  FIG. 4 shows the irradiation range 44 of the first lamp assembly 14 of the lighting device 10 installed at the corner cut portion of the intersection. Hereinafter, the irradiation range of one lighting device installed at the upper left corner of the intersection will be described, but the same applies to the irradiation ranges of the lighting devices installed at the other three corner cut portions of the intersection.

  As illustrated, the first lamp assembly 14 does not illuminate the corner section where the lighting device 10 is installed, but extends in a straight line direction of the runway 34 adjacent to the lower side of the lighting device 10 from within the intersection. Mainly lighting. Further, the first lamp assembly 14 also illuminates substantially the entire crosswalk 36 on the runway 34. It is preferable to form a cut-off line 44a that crosses in front of the oncoming vehicle 32 so as not to cause glare to the oncoming vehicle 32 traveling on the oncoming lane 35.

  As shown in FIG. 4, the first lamp assembly 14 irradiates a wide area not only within the intersection but also to the runway 34 that is far from the intersection. The traveling bicycle 52 can be illuminated from the front side of the illumination device 10. For this reason, when viewed from the driver of the vehicle 30 on the runway 34, the pedestrian 50 and the bicycle 52 are in reverse silhouette, so the visibility of the pedestrian and the bicycle is improved.

  Returning to FIG. 3, the second lamp assembly 16 is attached to the pole 12 so as to extend in a direction substantially perpendicular to the first lamp assembly 14. Similarly to the first lamp assembly 14, the second lamp assembly 16 is also mounted so that the irradiation surface is slightly upward rather than directly below.

  FIG. 5 shows the illumination area 46 of the second lamp assembly 16 in addition to the illumination area 44 of the first lamp assembly. The second lamp assembly 16 is adjacent to the left side of the sidewalk standby unit 37 and the left side of the sidewalk standby unit 37 at the corner cutout (lower right corner) located diagonally to the corner cutout (upper left corner) where the lighting device 10 is installed. Configured to illuminate a pedestrian crossing 38 and a lane 39. It is preferable to form a cut-off line 46a that crosses in front of the oncoming vehicle 33 so as not to cause glare to the oncoming vehicle 33 traveling on the oncoming lane 31.

  By providing the second lamp assembly 16, even when the vehicle 30 makes a right turn at the intersection, a pedestrian on the pedestrian crossing 38, a pedestrian crossing the lane 39, or a bicycle is viewed in reverse silhouette when viewed from the driver of the vehicle 30. Therefore, the visibility of pedestrians and bicycles is improved.

  Returning to FIG. 3, the third lamp assembly 18 is mounted in the middle of the pole 12 below the first and second assemblies. The third lamp assembly 18 emits light downward so as to illuminate the corner cut portion where the pole is installed, the sidewalk standby portion around the corner cut portion, and the intersection.

  FIG. 6 is a view showing the irradiation range 48 of the third lamp assembly 18 in addition to the irradiation ranges 44 and 46 of the first and second lamp assemblies. The 3rd lamp assembly 18 illuminates the periphery of the corner cutting part in which the illuminating device was installed similarly to the illuminating device demonstrated in FIG.

  In FIG. 3, it has been described that a plurality of lamp assemblies 14, 16, and 18 having different irradiation ranges and irradiation directions are provided on one pole. Instead, a plurality of lamp units constituting the irradiation range shown in FIGS. 4 to 6 may be incorporated in one lamp assembly (for example, the first lamp assembly 14).

  As described above, each lamp assembly is composed of a combination of a plurality of lamp units each using a light emitting diode as a light source. A configuration example of the lamp unit is shown in FIGS.

  FIG. 7 shows the configuration of the lamp unit 70 that irradiates the sidewalk standby section and the runway on the facing side of the lighting device in the irradiation range of the first and second lamp units. A reflection surface having a substantially paraboloidal shape is formed inside the reflector 74, and reflects the light emitted from the light emitting diode 72.

  FIG. 8 shows the configuration of the lamp unit 80 that irradiates the sidewalk standby part and the running path on the facing side of the lighting device in the irradiation range of the first and second lamp units. A reflection surface having a substantially spheroidal shape is formed inside the reflector 84, and the light emitted from the light emitting diode 82 is reflected and irradiated through the projection lens 86.

  FIG. 9 shows a configuration of the lamp unit 90 for forming the cut-off line 44a of the irradiation range 44 of the first lamp unit and the cut-off line 46a of the irradiation range 46 of the second lamp unit. A reflection surface having a substantially spheroidal shape is formed inside the reflector 94, and reflects the light emitted from the light emitting diode 92 and irradiates it through the projection lens 98. A cutoff line is formed by the shade 96 positioned between the reflector 94 and the projection lens 98.

  FIG. 10 shows a configuration of the lamp unit 100 for forming the cut-off line 44a of the irradiation range 44 of the first lamp unit and the 46 cut-off lines 46a for the irradiation of the second lamp unit. Inside the reflectors 104 and 108, a substantially paraboloidal reflecting surface is formed, which reflects the light emitted from the light emitting diode 102, respectively. A cut-off line is formed by the shade 106 located between the reflectors 104 and 108.

  FIG. 11 shows the lamp unit 110 incorporated in the third lamp assembly 18 that illuminates the corner cut portion where the lighting device is installed and the periphery thereof. A substantially parabolic reflecting surface is formed inside the reflector 114 of the lamp unit 110, and diffuses light emitted from the light emitting diode 112.

  As described above, according to the present embodiment, a pedestrian or the like traversing the runway in order to irradiate the runway of the vehicle located on the opposite side across the intersection of the corner cut portion where the lighting device is installed. It becomes the state of the reverse silhouette view irradiated from the near side, and the visibility of a pedestrian or the like from a vehicle traveling in or near the intersection is improved. Also, by installing this lighting device at all corners of the intersection, pedestrians in the intersection will always be in reverse silhouette with at least one lighting device as seen from the vehicle at any position in the intersection. Therefore, the visibility of pedestrians and the like near the intersection is improved.

  The present invention is not limited to the above-described embodiments, and various modifications such as design changes can be added based on the knowledge of those skilled in the art. The configuration shown in each figure is for explaining an example, and any configuration that can achieve the same function can be changed as appropriate, and the same effect can be obtained.

  In the embodiment, it has been described that the light distribution is adjusted by the shape of the reflecting surface of each lamp unit. However, the outer lens of each lamp unit is provided with a plurality of lens steps having different diffusion angles, and the light distribution is adjusted by this lens step. May be.

  DESCRIPTION OF SYMBOLS 10 Lighting device, 12 poles, 14 1st lamp assembly, 16 2nd lamp assembly, 18 3rd lamp assembly, 20 lamp unit, B corner cutting part, C crosswalk, D sidewalk waiting part.

Claims (3)

A lighting device installed on a pole at or near a corner of an intersection,
Of exit track for entry road to the intersection adjacent to the corner cutting portion, irradiation and exit track which is not adjacent to the corner cutting portion, and the corner cutting portion adjacent to said exit track, a pedestrian crossing the retractable race path, the It is comprised so that it may carry out, The illuminating device characterized by the above-mentioned.   2. The lamp assembly according to claim 1, wherein a plurality of lamp assemblies each having a different main optical axis or a plurality of lamp units each having a different main optical axis are assembled in one lamp assembly. Lighting device.   The lighting device according to claim 2, wherein a light emitting diode divided into a plurality of blocks is used as a light source of the lamp assembly or the lamp unit.

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