JP6045282B2 - Road lighting equipment - Google Patents

Description

  The present invention relates to a road lighting device that is installed on a column or the like on the side of a road to illuminate a road below.

  The light distribution required for a road lighting device that is installed on an upper portion of a support column standing on the side of a road and illuminates the road below is varied depending on the installation location. For example, as shown in FIG. 1, when installed on the side of the road at intervals of about several tens of meters, the road 2 is illuminated in a wide range in the longitudinal direction L, and the entire width direction W of the road 2 is illuminated brightly. A light distribution pattern is required. On the other hand, as shown in FIG. 2, in the case of being installed on the pillars 3 erected at the four corners of the intersection 5, a light distribution pattern capable of illuminating the sidewalk 6 and the like in the intersection 5 and around the intersection 5 is required.

  In recent years, LEDs (light emitting diodes) have been adopted as light sources due to demands for energy saving and the like, and road lighting devices having lenses for individually responding to the above demands have been proposed. For example, Patent Documents 1 and 2 below disclose a lens and a road lighting device having a special shape that can efficiently illuminate the longitudinal direction of a road using an LED as a light source.

JP 2010-177028 A Special table 2010-524170 gazette

  When a road lighting device is manufactured by designing a lens having a light distribution pattern required for each installation location, the design, manufacture, management, and the like of the lens and the instrument become complicated.

  An object of the present invention is to provide a road lighting device that can cope with various light distribution patterns without individually designing lenses.

  The gist of the present invention for achieving the object lies in the inventions of the following items.

[1] In a road lighting device that illuminates a road from below to above,
A plurality of light emitting units each having a light emitting element and a lens for controlling light distribution;
A main body to which the plurality of light emitting units are attached;
With
Wherein the plurality of light emitting portions state, and are not a plurality of types of light-emitting unit for emitting light in different light distribution patterns are combined,
Installed on the side of the road or above the intersection,
The main body unit is configured by alternately arranging a first light emitting unit and a second light emitting unit that irradiates light more obliquely to the opposite bank side of a road or an intersection than the first light emitting unit in the opposite bank direction. Have
An interval from the second light emitting unit to the first light emitting unit adjacent to the opposite bank side is longer than an interval from the first light emitting unit to the second light emitting unit adjacent to the opposite bank side. A road lighting device characterized by being made .

In the said invention, the road lighting apparatus of desired light distribution can be obtained by changing the combination of the several light emission part attached to a main-body part from the multiple types of light emission part which irradiates light with a different light distribution pattern. . In addition, even when the first light emitting unit and the second light emitting unit are mixed, the course of light obliquely irradiated from the second light emitting unit to the opposite bank side of the road or intersection is the opposite bank of the second light emitting unit. It is prevented that the first light emitting unit arranged next to the side is obstructed.

[2] A plurality of light emitting modules configured by arranging a plurality of the light emitting units are attached to the main body.
The road illuminating device according to [1], wherein the plurality of light emitting modules attached to the main body are a combination of a plurality of types of light emitting modules that emit light with different light distribution patterns.

  In the above-described invention, a plurality of types of light emitting modules having different light distribution patterns configured by arranging a plurality of light emitting units are prepared, and a desired arrangement is changed by changing the combination of the plurality of light emitting modules attached to the main body. A light road lighting device can be obtained.

[ 3 ] The light emitting module includes the first light emitting unit and the second light emitting unit arranged in a row in the opposite bank direction, and the light emitting module is mounted on the main body unit on the opposite bank. When a plurality of the light emitting elements are arranged in the direction, an interval from the second light emitting unit to the first light emitting unit adjacent to the opposite bank side is the second light emitting unit adjacent to the opposite bank side from the second light emitting unit. The road illumination device according to [2 ], wherein the road illumination device is longer than a distance to the light emitting portion.

  In the above invention, when the light emitting module in which the first light emitting unit and the second light emitting unit are mixed is provided, the path of light obliquely irradiated from the second light emitting unit to the opposite shore side of the road or the intersection is the first. It is prevented that the first light emitting unit disposed next to the opposite bank side of the second light emitting unit is inhibited.

[ 4 ] The light distribution pattern of the light emitting module can change a combination of a plurality of light emitting units arranged in the light emitting module among the plurality of types of light emitting units. [2] or [ 3 ] The road lighting device described in the above.

  In the said invention, the light distribution pattern of a light emitting module is changed by changing the combination of the several light emission part which comprises a light emitting module.

[ 5 ] The road lighting device according to any one of [1] to [ 4 ], wherein at least one of the number and arrangement of the light emitting units attached to the main body is changeable.

  In the said invention, the light distribution pattern of a road lighting apparatus is changed also with the number and arrangement | sequence of those which attach a light emission part other than the kind of light emission part attached to a main-body part. This change depends on the number and arrangement of the light emitting modules in the case where the light emitting unit is formed as a light emitting module.

[ 6 ] One of a light distribution road illumination device that illuminates the intersection and its periphery from above the corner of the intersection, and a light distribution road illumination device that is installed above the side of the road other than the intersection to illuminate the road. The road illumination device according to any one of [1] to [ 5 ], wherein the road illumination device can be changed from one to the other.

[ 7 ] The road illumination device according to any one of [1] to [ 6 ], wherein the light emitting unit is configured by covering a light emitting diode with a lens.

  According to the road lighting device according to the present invention, it is possible to deal with various light distribution patterns without individually designing lenses, and the effort of design, manufacturing, production management, and the like is reduced.

It is a figure which shows the 1st example of installation of the road lighting apparatus which concerns on embodiment of this invention. It is a figure which shows the 2nd example of installation of the road lighting apparatus which concerns on embodiment of this invention. 1 is a perspective view showing a road lighting device according to an embodiment of the present invention. It is a figure which shows the front of the road illuminating device which concerns on embodiment of this invention, a lower surface, an upper surface, a back surface, and a side surface. It is a figure which shows the inside (array of light emitting modules) of a road illuminating device. It is a figure which shows the cross section of W direction of the various types of lens used for a light emitting module, and the L direction, and the course of light. It is explanatory drawing which shows the cross section of W direction of a type A lens, and the L direction, and the course of light. It is a figure which shows the front of the lens unit which arranged the lens of type A, a side surface, and an AA cross section. It is a figure which shows equi-illuminance distribution of the road illuminating device using the light emitting module which has a lens unit of FIG. It is a front view of a lens unit in which lenses of type C and D are arranged. It is a figure which shows the cross section of the W direction in the state which arranged the light emitting module which inserted the lens unit shown in FIG. 10 in the main-body part. It is a figure which shows equi-illuminance distribution of the road illuminating device using the light emitting module which has a lens unit of FIG. It is a figure which shows the front of the lens unit which arranged the lens of type E, AA cross section, and BB cross section. It is a figure which shows the isoilluminance distribution of the road illuminating device using the light emitting module which has a lens unit of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a first installation example of a road lighting device 10 according to an embodiment of the present invention. The road illuminating device 10 is attached to the upper part of a column 3 having a height of about 10 m provided on the side of the road 2 to illuminate the road and its surroundings from above. The road lighting device 10 is installed at intervals of several tens of meters (for example, 40 m) along the longitudinal direction of the road.

  FIG. 2 shows a second installation example of the road lighting device 10. The road lighting device 10 is attached to the upper part of a support column 3 that is erected at the four corners of the intersection 5 and has a height of about 10 m, and illuminates the sidewalk 6 and the like in the intersection 5 and its surroundings from above. The road illumination device 10 for a roadway shown in FIG. 1 and the road illumination device 10 for an intersection shown in FIG. 2 have different light distribution patterns.

  In each figure, the arrow L indicates the longitudinal direction (longitudinal direction) of the road 2, and the arrow W indicates the width direction (crossing direction) of the road 2 or in the road illumination device 10 for an intersection as viewed from the road illumination device 10. Indicates the center direction. Further, the direction in which the main illumination target such as the road 2 or the intersection 5 is located with respect to the installation position of the road illumination device 10 (direction indicated by the arrow W) is referred to as “front”, and the opposite side is referred to as “rear”.

  FIG. 3 is a perspective view of the road illumination device 10 as viewed obliquely from above and front. FIG. 4 shows the front, bottom, top, back and side of the road lighting device 10. The road lighting device 10 includes a casing 11 having a light irradiation port on the lower surface side, a plurality of light emitting modules 30 (see FIG. 5) housed in the casing 11, and a control (not shown) that drives the light emitting modules 30. It consists of a circuit. The main part of the housing 11 is a cast product manufactured by pouring molten metal into a mold, cooling and solidifying it.

  A housing 11 of the road lighting device 10 includes a base 12 that houses a metal fitting for fixing the road lighting device 10 to the support column 3 and a terminal block for power supply, and a horizontally-oriented substantially rectangular shape that extends forward from the base 12. And a main body portion 14 having a relatively thin hollow box shape.

  A substantially rectangular irradiation port 16 is opened on the lower surface of the main body 14. A translucent plate 18 is fitted in the irradiation port 16 with packing interposed therebetween. The translucent plate 18 is a plate-like member that transmits light, and is made of glass, resin, or the like.

  FIG. 5 shows a state in which the road lighting device 10 with the light-transmitting plate 18 removed is viewed from the lower surface side. A plurality of light emitting modules 30 are accommodated in the main body 14 so as to face the irradiation port 16 from the inside of the main body 14.

  The light emitting module 30 is configured by arranging a plurality of LEDs (light emitting diodes) 34 on a flat substrate and covering each LED 34 with a lens 42. Here, 14 LEDs 34 covered with lenses 42 are arranged in a 2 × 7 matrix on a rectangular substrate. In the main body 14, the six light emitting modules 30 are arranged in a 3 × 2 matrix and attached. The number of light emitting modules 30 attached can be increased or decreased. The LED 34 emits light in a range from the center of the sphere to a substantially hemisphere. That is, light is emitted like a point light source provided on the surface side of the substrate.

  FIG. 6 shows various types of lenses 42 and optical paths used in the light emitting module 30. An LED 34 is arranged at the starting point of the emitted optical path. Hereinafter, the alphabet at the end of the reference numerals attached to the lenses indicates the lens type.

  Each type of lens 42A to 42E has a different light distribution pattern. The type A lens 42A has a light distribution suitable for the road illumination device 10 for a roadway. In the W direction (the width direction of the road), control is performed so that light emitted from the LED 34 is directed more forward (road side) and less light is directed rearward (sidewalk side). In the L direction (longitudinal direction of the road), the light distribution is controlled over a wide range and symmetrical with respect to the lens 42A.

  The type B lens 42B has a light distribution pattern similar to that of the type A lens 42A. However, as compared with the type A lens 42A, the light toward the front (road side) in the W direction (the width direction of the road). Light distribution is controlled to increase. The type B lens 42B is suitable for roads with more lanes than the type A lens. The control in the L direction (the longitudinal direction of the road) is the same as that of the type A lens 42A.

  The type C lens 42C is suitable for the road illumination device 10 for an intersection, and has a light distribution that illuminates the rear side (the sidewalk side) of the road illumination device 10 in the W direction (the center direction of the intersection). Yes. In the control in the L direction (longitudinal direction of the road), the illumination range is narrower than that of the type A lens 42A, and the light distribution is controlled symmetrically around the lens 42C.

  The type D lens 42D is suitable for an intersection like the type C lens 42C, but has a wider irradiation range on the front side (road side) than the type C lens.

  The type E lens 42E has a light distribution suitable for the road illumination device 10 for a roadway. The type E lens 42E is distributed to some extent also on the rear side (on the sidewalk side) compared to the type A lens 42A. Further, the light traveling to the area beyond the opposite shore of the road is less than the type A and type B lenses 42A and 42B. Suitable for lighting roads and sidewalks next to this road. Or, it is suitable for the case where it is attached to a position inside the road to some extent by an arm or the like from a post next to the road.

  Next, the characteristics of the lens shape will be described.

  FIG. 7A shows a cross section of the type A lens 42A in the W direction (transverse direction of the road 2) and the optical path, and FIG. 7B shows a cross section of the lens 42A in the L direction (longitudinal direction of the road 2). The optical path is shown.

  The lens 42 </ b> A is flattened by dividing the sphere into two by a plane passing through the center thereof, and has a shape with a recess 43 on the cut surface. The lens 42A is attached so that the concave portion 43 covers the LED 34 on the substrate on which the LEDs 34 are arranged. At this time, the LED 34 is accommodated in a predetermined position in the recess 43. The same applies to the other types of lenses 42B to 42E.

  As shown in FIG. 4B, the lens 42A controls the path of the light emitted from the LED 34 so as to have a symmetrical light distribution around the lens 42A in the longitudinal direction (L direction) of the road 2. . On the other hand, as shown in FIG. 5A, the lens 42A controls the path of light in the width direction (W direction) of the road 2 so as to have an asymmetric light distribution around the lens 42A. Specifically, in the control in the width direction of the road 2, the light directed toward the front (opposite side) of the road 2 is increased, and the light directed toward the rear (opposite side of the road 2) is reduced with respect to the installation position of the road lighting device 10. Control to do.

  In the lens 42A shown in FIG. 7, the light distribution mainly in the width direction (W direction) of the road 2 is controlled by the shape of the incident surface 44 (the inner surface of the concave portion 43 of the lens 42A) on which the light emitted from the LED 34 enters. The light distribution in the longitudinal direction (L direction) of the road 2 is mainly controlled by the shape of the emission surface 45.

  That is, the emission surface 45 has a symmetrical shape with respect to the center of the lens 42A in the longitudinal direction L of the road. In general, the shape of the ellipsoid obtained by rotating the ellipse by 180 degrees about its major axis is a half-ellipsoid curved surface divided by a plane passing through the major axis, and the center of the lens in the longitudinal direction L of the road It is symmetrical with respect to. The LED 34 is at the center position of the lens 42 </ b> A in the longitudinal direction L of the road 2.

  On the entrance surface 44, the cross section of the road 2 in the longitudinal direction L (see FIG. 7B) has a substantially semicircular or semielliptical shape. The cross-section (see FIG. 7A) in the width direction (W direction) of the road 2 is a lens so that the above-mentioned light distribution (light distribution with increased forward light and less backward light) can be obtained. It is asymmetric with respect to the center of the shape, and has a shape combining a convex surface and a concave surface. Further, the LED 34 is in a position shifted rearward from the center of the lens 42 </ b> A in the width direction W of the road 2.

  In the cross section in the width direction (W direction) of the road 2, the incident surface 44 has a first concave surface portion 44 a that is convex when viewed from the LED 34 and a convex surface portion 44 b that is convex when viewed from the LED 34 from the rear to the front (opposite side). The second concave surface 44c that is concave as viewed from the LED 34 is smoothly connected.

  When the light from the LED 34 is transmitted without being refracted, the semicircular concave surface centering on the LED 34 becomes the incident surface, but the first concave surface portion 44a is compared with the semicircular concave surface. As a result, the incident angle to the incident surface is increased almost horizontally and acts to bend the incident light forward (opposite side) and slightly diffuse. The light incident on the first concave surface portion 44a is refracted further forward when it exits from the exit surface 45.

The portion of the convex surface portion 44b has a larger effect of condensing incident light than the first concave surface portion 44a. The light incident on the convex surface portion 44b is further refracted forward when it exits from the exit surface 45, and illuminates the range where the road 2 exists. The road 2 is illuminated more brightly by the light collection at the convex surface portion 44b.

  Compared to the semicircular concave surface described above, the second concave surface portion 44c is also made closer to the horizontal and has a larger incident angle on the incident surface, and the light traveling further beyond the opposite shore of the road 2 is transmitted to the road. Bends back to 2 and plays a slightly diffusing function. The light incident from the second concave surface portion 44c is incident from the normal direction with respect to the emission surface 45 and is emitted without being refracted.

  In this way, the exit surface 45 is merely a convex surface, but due to the shift of the shape of the entrance surface 44 and the position of the LED 34, in the width direction W of the road 2, the light forward (opposite side) is increased, The light distribution is asymmetric, reducing the amount of light behind.

  Similar to the type A lens 42A, in the type B lens 42B and the type E lens 42E, light distribution in the W direction is mainly controlled by the shape of the entrance surface, and mainly in the L direction by the shape of the exit surface. Control the light distribution. In the type D lens 42D, the entrance surface is a semicircular concave surface, the exit surface is mainly in the W direction, and light is emitted without being refracted by the lens in the L direction with almost no control.

  FIG. 8 shows a front surface, a side surface, and an AA cross section of the lens unit 40 included in the light emitting module 30. Fourteen lenses 42 that cover the fourteen LEDs 34 arranged in one light emitting module 30 are integrally molded into a lens unit 40. The lens unit 40 is manufactured by molding a resin. FIG. 8 shows the lens unit 40 in the case where all of the 14 type A lenses 42A are employed. 7A is a BB cross section of FIG. 8, and FIG. 7B is a CC cross section of FIG.

  As shown in FIG. 8, the lens unit 40 includes all types A of lenses 42 </ b> A, other types of lenses, and a plurality of types of lenses mixed together. Multiple types are prepared. The light distribution pattern of the light emitting module 30 in which the lens unit 40 is inserted is changed depending on the types of lenses included in the lens unit 40 or combinations thereof. Various light distribution patterns of the road lighting device 10 can be changed depending on the type, combination, number, and arrangement of the light emitting modules 30 attached to the main body 14.

  FIG. 9 shows an isoilluminance distribution of the road illumination device 10 in which six light emitting modules 30 each having a lens unit 40 in which all type A lenses 42A are arranged are attached to the main body unit 14 in the arrangement shown in FIG. Yes. The road illuminating device 10 is attached to a column 3 erected on the side of the road 2 at an inclination of 5 degrees at a position 10 m above the road surface. The light distribution pattern in FIG. 9 shows the illuminance distribution on the ground surface.

  The light distribution pattern is symmetrical in the longitudinal direction L of the road 2 with respect to the installation position of the road illumination device 10 (appliance position in the figure), and the road 2 is illuminated in a wide range in the longitudinal direction L.

  On the other hand, in the width direction (W direction) of the road 2, the light distribution pattern is asymmetric with respect to the appliance position. That is, although the road lighting device 10 is installed almost horizontally, the light distribution center in the width direction W of the road 2 is shifted from the appliance position to the opposite shore side of the road 2, and is almost in the width direction W of the road 2. It is in the center. Further, beyond the road 2, the light gradually weakens as the distance from the road 2 increases. On the other hand, in the area behind the appliance position, the light distribution suddenly decreases as the distance from the road 2 increases.

  By such light distribution, the road 2 is brightly illuminated on the entire width direction W with the road lighting device 10 mounted horizontally or with a small inclination on the column 3 erected on the side of the road 2, while the side of the road 2 (rear side) ) The light that reaches private houses, etc. can be weakened. Further, the road 2 can be illuminated in a wide range in the longitudinal direction L symmetrically about the installation position of the road lighting device 10.

  FIG. 10 shows the lens unit 40B of the light emitting module 30 employed in the road lighting device 10 at the intersection. A type C lens 42C and a type D lens 42D shown in FIG. 6 are mixedly used.

  FIG. 11 shows a cross section in the W direction in a state in which the light emitting modules 30 with the lens units 40 </ b> B attached are arranged on the main body 14. Each light emitting module 30 shown in FIG. 11 has a cross section taken along line AA in FIG.

  The type D lens 42D and the type C lens 42C are alternately arranged in the W direction which is the opposite bank direction of the intersection and the crossing direction of the road. The type D lens 42D irradiates light obliquely forward (opposite side) as compared to the type C lens 42C. Therefore, in order not to obstruct the obliquely traveling light (in front of the type D lens 42D ( It is desirable to provide a wider space without obstacles on the opposite shore.

  Therefore, the distance d1 from the type D lens 42D to the type C lens 42C next to the front (opposite side) is equal to the distance D1 from the type C lens 42C to the front (opposite side). Is longer than the interval d2.

  Here, in one light emitting module 30, a type D lens 42D is arranged on the front side (opposite side). When a plurality of light emitting modules 30 are arranged in the W direction, there is no obstacle (other lens) on the further front side of the frontmost light emitting module 30, and the inclined light is emitted from the road lighting device 10 without being obstructed. The

  When the plurality of light emitting modules 30 are juxtaposed in the W direction, the distance d1 is the distance L1 from the type D lens 42D to the front end of the substrate of the light emitting module 30, the distance L2 between the substrate and the substrate, and the type. This is the total distance L3 from the C lens 42C to the rear end of the substrate of the light emitting module 30. In view of this, the arrangement and interval of the lenses 42C and 42D on the substrate of one light emitting module 30 are determined.

  The type C lens 42C is arranged so as to be positioned at the rearmost end in one light emitting module 30, and d1 and d2 are taken into consideration with reference to this in the light emitting module 30 of the type D lens 42D. The arrangement at may be determined. In this way, the distance from the lens 42D in the foremost light emitting module 30 to the front end of the substrate of the light emitting module 30 is secured to the maximum, so that another obstacle (lens) is located near the front of the foremost light emitting module 30. Even if there are other obstacles), the distance to the obstacle can be earned, and the path of the light inclined forward is hardly obstructed.

  FIG. 12 shows a light distribution pattern of the road lighting device 10 in which six light emitting modules 30 having the lens unit 40B shown in FIG. 10 are attached to the main body 14 in the arrangement as shown in FIG. In this example, a road lighting device 10 for an intersection is used. The road lighting device 10 is attached to a support column 3 erected at the corner of the intersection 5 at an inclination of 5 degrees at a position 10 m above the road surface. The equal illuminance distribution of FIG. 12 shows the illuminance distribution on the ground surface.

  The road lighting device 10 illuminates an area that is a little over half of the intersection 5 from the installation position of the road lighting device 10 (apparatus position in the figure), and also illuminates the rear (sidewalk side) area. In addition, in the case where it is installed on the side of the road 2 as shown in FIG. 1, the lens unit 40B may be entirely or partially used when it is desired to illuminate the road 2 and a relatively wide sidewalk beside the road. Use it. For example, two of the six lenses are attached in a combination of the lens unit 40B and four of the lens units 40.

  FIG. 13 shows the front, AA cross section, and BB cross section of the lens unit 40E in which all 14 lenses of the type E lens 42E are arranged. FIG. 14 shows an isoilluminance distribution of the road lighting device 10 in which six light emitting modules 30 having the lens unit 40E shown in FIG. 13 are attached to the main body 14 in the arrangement as shown in FIG.

  As described above, the road lighting device 10 is provided with a plurality of types of lens units in which a desired lens is selected and arranged from a plurality of types of lenses 42A to 42E, and a plurality of types of light emission to which any lens unit is attached. By selecting the light emitting module 30 to be attached to the main body 14 from the modules 30, it is possible to manufacture the road lighting device 10 having different light distribution patterns while commonly using other components of the road lighting device 10. .

  Thereby, the road illuminating device 10 of various light distribution can be obtained only by changing the kind and combination of the light emitting module 30 attached to the main-body part 14 of the road illuminating device 10. FIG. Therefore, it is not necessary to individually design a lens or the like according to the light distribution pattern required for each installation place, and it is possible to reduce time and effort required for design, production, production management, and the like.

  The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration is not limited to that shown in the embodiment, and there are changes and additions within the scope of the present invention. Are also included in the present invention.

  In the embodiment, six light emitting modules 30 adopting the same type of lens unit are arranged in the main body portion 14 of one road lighting device 10, but a plurality of types of light emission adopting different types of lens units are used. The modules 30 may be combined and mixed. Further, the number of the light emitting modules 30 attached is not limited to six. Further, when six light emitting modules 30 are attached, they are arranged in a 3 × 2 matrix, but other arrangements may be used, and the attachment positions of the light emitting modules 30 can be variously changed.

  In the embodiment, the lens unit 40B of FIG. 10 is illustrated as an example in which a plurality of types of lenses 42 are mixed in one lens unit. However, a combination of lenses to be mixed, a mixing ratio, an arrangement, and the like are intended light distributions. What is necessary is just to change arbitrarily according to a pattern.

  In the embodiment, the lens unit 40 in which the plurality of lenses 42 are integrated is provided, but each lens 42 may be made independent and one lens may be attached to the substrate of the light emitting module 30.

  The lenses 42 </ b> A to 42 </ b> E shown in the embodiment are merely examples, and the present invention is not limited to this. The light source is not limited to the LED 34.

  The road illumination device 10 may be attached to, for example, the tip of an arm that extends slightly from the support 3 installed on the side of the road 2 to the inside of the road 2. That is, it is not limited to the side of the road, and may be installed above one side of the road. Further, the road lighting device 10 may be installed to be inclined to a certain degree (for example, 5 degrees) toward the opposite bank side.

  The shape of the housing 11 and the like of the road lighting device 10 shown in the embodiment is an example, and is not limited to this.

DESCRIPTION OF SYMBOLS 2 ... Road 3 ... Post 5 ... Intersection 6 ... Sidewalk 10 ... Road lighting device 11 ... Housing 12 ... Base 14 ... Main part 16 ... Irradiation port 18 ... Translucent plate 30 ... Light emitting module 34 ... LED
40, 40B, 40E ... lens unit 42, 42A-42E ... lens 43 ... concave portion 44 ... incident surface 44a ... first concave surface portion 44b ... convex surface portion 44c ... second concave surface portion 45 ... exit surface

Claims (7)

In the road lighting device that illuminates the road from the top to the bottom,
A plurality of light emitting units each having a light emitting element and a lens for controlling light distribution;
A main body to which the plurality of light emitting units are attached;
With
Wherein the plurality of light emitting portions state, and are not a plurality of types of light-emitting unit for emitting light in different light distribution patterns are combined,
Installed on the side of the road or above the intersection,
The main body unit is configured by alternately arranging a first light emitting unit and a second light emitting unit that irradiates light more obliquely to the opposite bank side of a road or an intersection than the first light emitting unit in the opposite bank direction. Have
An interval from the second light emitting unit to the first light emitting unit adjacent to the opposite bank side is longer than an interval from the first light emitting unit to the second light emitting unit adjacent to the opposite bank side. A road lighting device characterized by being made . A plurality of light emitting modules configured by arranging a plurality of the light emitting units are attached to the main body,
The road lighting device according to claim 1, wherein the plurality of light emitting modules attached to the main body are a combination of a plurality of types of light emitting modules that emit light with different light distribution patterns. The light emitting module includes the first light emitting unit and the second light emitting unit arranged in a line in the opposite bank direction, and the main body unit includes a plurality of the light emitting modules in the opposite bank direction. When arranged, an interval from the second light emitting unit to the first light emitting unit adjacent to the opposite bank side is the second light emitting unit adjacent to the opposite bank side from the first light emitting unit. The road illumination device according to claim 2, wherein the road illumination device is longer than the interval of the road illumination device. The light distribution pattern of the light emitting module, a road according to claim 2 or 3, characterized in that a combination of a plurality of light emitting sections arranged on the light emitting module from among the plurality of types of light emitting portion can be changed Lighting device. The road lighting device according to any one of claims 1 to 4 , wherein at least one of the number and arrangement of the light emitting units attached to the main body is changeable. From one to the other among the light distribution road illumination device that illuminates the intersection and its surroundings from above the corner of the intersection, and the light distribution road illumination device that is installed above the side of the road other than the intersection and illuminates the road The road lighting device according to any one of claims 1 to 5 , wherein the road lighting device is changeable. The road illuminator according to any one of claims 1 to 6 , wherein the light emitting unit is configured by covering a light emitting diode with a lens.

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