JP2012255271A - Road marker device and installation structure of road marker device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a road marker device including a light-emitting diode and a projecting optical system to linearize the light from the light-emitting diode for emission to the outside, which allows the line length of the light to be adjusted for indicating road signs such as road side lines or road boundaries.SOLUTION: The projecting optical system built in a road marker device 1 attached to a column S has a light emitting direction tilted in the vertical plane to the road face. The road face is irradiated with linear light extending in the longitudinal direction along the light emitting direction from the projection part 21 of the projecting optical system, so that a line K is drawn by the light L2 from the projection part 21. A tilt angle adjusting mechanism is provided to adjust the tilt angle in the vertical plane in the light emitting direction of the projecting optical system.

Description

  The present invention relates to a road marking device that expresses a road marking such as a stop line or a road boundary such as a roadside line or a center line by light irradiation, and an installation structure of the road marking device.

  Road markings such as stop lines provided on the road and roadside lines representing road boundaries include retroreflective glass beads that reflect the irradiated light toward the light source direction, and so on. Visibility from vehicles traveling with lights on is improved.

  On the other hand, the improvement in visibility due to the glass beads is relatively ineffective for pedestrians and the like who do not have a light source, and is ineffective when buried in snow during snowfall. Various inventions have been disclosed in order to ensure the performance.

  For example, Patent Document 1 discloses a roadway outer line illumination device that illuminates a roadway outer line displayed on a road surface in order to identify a road shoulder and a roadway, and a housing that is installed on a structure on a road side portion. And an illumination unit that illuminates the roadway outer line, and a holding member that rotatably holds the illumination unit, and the illumination units are juxtaposed along the traveling direction of the vehicle. Further, there is disclosed a roadway outside line illumination device characterized by comprising a large number of light emitting diodes. This roadway outside line illuminating device includes an optical element that collects light emitted from the light emitting diode, converts it into a substantially parallel light beam, and guides it to the roadway outside line.

JP 2002-260401 A

  However, it is difficult to adjust the size of the irradiation range in the longitudinal direction with respect to the substantially parallel light rays. When illuminating a wide roadway outer line, a large number of roadway outer line illumination devices are serially arranged along the longitudinal direction. There is a problem that it is necessary to install in the.

  Accordingly, the present invention has been made to solve the above-described problems, and provides a road marking device capable of adjusting the length of a light line for marking road markings such as roadside lines and road boundaries. This is the main desired issue.

  That is, the road marking device according to the present invention is a road marking device including a light emitting diode and a light projecting optical system that shapes light from the light emitting diode into a line shape and emits the light outside. The light emission direction of the system is inclined in the vertical plane with respect to the road or the boundary of the road, and the light projecting optical system is front and back along the light emission direction on the road or the road boundary. A line is drawn by irradiating a line-shaped light extending in the direction, and has a tilt angle adjusting mechanism that adjusts a tilt angle in a vertical plane in the light emitting direction of the light projecting optical system.

  According to the road marking device of the present invention, the light emission direction of the light projecting optical system is inclined in the vertical plane with respect to the road or the road boundary, and the light is on the road or the road boundary. Since the line is drawn by irradiating the line-shaped light extending in the front-rear direction along the emission direction, the light line indicates the road marking on the road such as the stop line, and the road boundary such as the roadside line and the center line. The position can be marked efficiently, and the visibility at night or during snowfall can be improved.

  Further, the light emission direction of the light projecting optical system is inclined in the vertical plane on the road or on the road boundary, and extends in the front-rear direction along the light emission direction on the road or on the road boundary. By irradiating the line-shaped light and adjusting the tilt angle by the tilt angle adjusting mechanism, the position where the light line is formed can be adjusted in the front-rear direction along the light emission direction. By this adjustment, the length of the formed light line can be adjusted by changing the distance between the formation position of the light line and the light projecting optical system.

  In addition, if the road marking device is provided with a column mounting part and can be mounted on the side surface of the column standing through the column mounting unit, an existing installation standing on the road without newly installing a place for installation. Since it can be attached to the side surface using a support such as a gaze guidance mark, the installation can be facilitated.

  In addition, according to the installation structure of the road marking device according to the present invention, the road marking device is respectively provided on the side surfaces of the plurality of support columns standing at intervals along the road boundary via the support attachment portions. At the same time, because each road marking device irradiates the line-shaped light between the pillars to draw the line, it uses each pillar such as an existing line-of-sight guide sign placed along the road boundary. The road marking device can be easily installed. And since the said light line is drawn between each said support | pillar, the boundary of a road can be marked clearly and the driver | operator of a vehicle, a pedestrian, etc. can grasp | ascertain the linearity of the road correctly.

  According to the installation structure of the road marking device and the road marking device according to the present invention, the length of the formed light line is adjusted, and road markings such as stop lines and lane markings or roads such as roadside lines and central lines You can mark the boundaries of

The top view (I), front view (B), and side view (C) which show one Embodiment of this invention. AA sectional drawing in FIG. BB sectional drawing in FIG. It is a figure which shows the state which attached the road marking apparatus of this invention to the side surface of a support | pillar, (A) is a figure which shows the condition which irradiated the light from a light projection part to the near side, (B) from (I) The figure which shows the condition which also irradiated light forward. The figure which shows one Embodiment of the installation structure of the road marking apparatus which concerns on this invention. Sectional drawing which shows typically the road marking apparatus which concerns on deformation | transformation embodiment. The schematic diagram which shows the imaging area | region of the road marking apparatus which concerns on deformation | transformation embodiment. The figure which shows the irradiation aspect of the linear light in each image formation area | region. The schematic diagram which shows the installation structure of the road marking apparatus which concerns on deformation | transformation embodiment.

An embodiment of the present invention will be specifically described with reference to the drawings.
In the drawings, 1 is a road marking device. The road marking device 1 includes a main body 2 formed in a box shape, and a light projecting unit 21 is formed on the front surface of the main body 2. Further, the road marking device 1 is provided with a column mounting portion 5 disposed behind the main body portion 2, and this column mounting portion 5 is mounted on the main body portion 2 via a support portion 3.

2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line BB in FIG.
The main body 2 includes a case 22 that is formed in a hollow box shape and opens forward, and a translucent protective cover 23 that closes the opening. The light emitting diode 25 that is housed in the case 22 emits light. Light is transmitted through the protective cover 23 and emitted forward.

  The light emitting diodes 25 housed in the case 22 are attached with the direction of light emitted toward the front protective cover 23, and in the present embodiment, five light emitting diodes 25 are arranged in a row in the vertical direction. Are provided respectively.

  Further, a condensing lens 24 as a light projecting optical system is housed in the case 22. The condensing lens 24 is disposed between the protective cover 23 and each light emitting diode 25, and specifically, is disposed near the rear of the protective cover 23. The condensing lens 24 condenses the light L1 emitted radially from the light emitting diodes 25 arranged at the rear, and emits the light L2 from the protective cover 23 arranged at the front.

  Specifically, the condensing lens 24 is provided so as to condense the light L1 emitted radially more strongly in the left-right direction than in the up-down direction. Specifically, the condensing lens 24 condenses the light L1 in the left-right direction. The cylindrical lens is a cylindrical lens that collects light L1 as described above, and more specifically, the condensing lens 24 is formed in a substantially flat outer shape. Lens). The cylindrical Fresnel lens is provided such that the direction of the groove extends in the vertical direction.

  Further, a total of two protrusions 26 are formed on the left and right outer surfaces of the main body 2, each protruding outward. This is used for attachment to the support portion 3 to be described later.

  The column attaching part 5 is disposed behind the main body part 2 and is provided for attaching to the side surface of the pillar in which the road marking device 1 is erected. The column attachment portion 5 is configured by attaching a front plate portion 51 disposed on the front side and a rear plate portion 55 disposed on the rear side with two bolts and nuts N. Then, the front plate portion 51 and the rear plate portion 55 are sandwiched between the front plate portion 51 and the rear plate portion 55 and the bolts and nuts N are further tightened, so that the front plate portion 51 and the rear plate portion are placed on the outer surface of the column. 55 and are provided so that the column attachment portion 5 is attached to the column.

  The front plate portion 51 of the column mounting portion 5 has a flat front surface, and a bolt groove 53 that opens rearward is formed on the rear surface over the entire length of the left and right ends. The bolt groove 53 is formed between two ridges 52 protruding from the rear surface of the front plate portion 51, and the opening width is provided narrower than the back portion. Specifically, the rear end of the protrusion 52 disposed above is bent downward, and the rear end of the protrusion 52 disposed below is bent upward. The opening width of the bolt groove 53 formed therebetween is made narrow.

  The bolt groove 53 is formed in such a size that the bolt head of the bolt / nut N can be accommodated therein, and the opening width of the bolt groove 53 can be inserted into the bolt male screw portion of the bolt / nut N. It is formed in a large size. The two bolts of the bolt and nut N have their bolt heads housed in the bolt grooves 53, and the bolt male thread portions project rearward from the openings of the bolt grooves 53, so that the front plate portion 51 is attached to each.

  The rear plate portion 55 of the column attachment portion 5 has a winding plate portion 56 formed in a substantially semicircular curved plate shape projecting rearward and outward from both left and right edges of the winding plate portion 56. Each is formed into a shape including a flat plate portion 57 having a flat plate shape. The flat plate portion 57 is formed with circular through holes 58 penetrating from the front to the rear, and two through holes 58 are formed in each flat plate portion 57, one in total. And, through each through hole 58, a bolt male screw portion of a bolt and nut N protruding from the front plate portion 51 is inserted, and a nut of the bolt and nut N is fastened from the rear of each flat plate portion 57. The front plate portion 51 and the rear plate portion 55 are attached.

  The winding plate portion 56 of the rear plate portion 55 of the column attachment portion 5 has an inner surface shape corresponding to the outer surface of the column to which the road marking device 1 is attached. And by inserting a support between the front plate 51 and the rear plate 55, bringing the inner surface of the wound plate 56 into contact with the outer surface of the support, and tightening the bolts and nuts N respectively. The column attachment portion 5 is firmly fixed to the side surface of the column and can be easily removed by unfastening the bolts and nuts N.

  By providing the column attachment portion 5 as described above, the road marking device 1 can be attached to any position of the column having a circular cross section, so that the height and direction of the attachment position can be freely adjusted.

  The support portion 3 includes a flat mounting plate portion 31 and a total of two support plate portions 32 respectively extending forward from the left and right edges of the mounting plate portion 31. Is formed. Then, the rear surface of the mounting plate portion 31 and the front surface of the front plate portion 51 of the support column mounting portion 5 are brought into contact with each other, and the support portion 3 and the support column mounting portion 5 are fixed by screwing (not shown). Yes.

  Each support plate portion 32 is formed with a circular through hole 33 penetrating left and right, and each through hole 33 is located at a position corresponding to the two protrusions 26 formed in the main body portion 2. And is sized. The support plate portions 32 sandwich the left and right side surfaces of the main body 2, and the protrusions 26 are inserted into the through holes 33 so that the main body 2 is attached to the support 3. . The main body 2 is pivotally supported by the support 3 via the two protrusions 26 and is attached so as to be rotatable up and down between the support plates 32. In this way, the two projections 26 formed in the main body 2 and the through hole 33 provided in the support portion 3 and through which the projection 26 is inserted, are inclined in the vertical plane of the light emission direction of the condenser lens 24. An inclination angle adjustment mechanism for adjusting the angle is configured.

  The road marking device 1 of the present embodiment in which the main body 2, the support 3, and the column attachment portion 5 are provided as described above is provided at any position on the side surface of the column S to be erected via the column attachment portion 5. The main body 2 pivotally supported by the support 3 can be rotated up and down so that the direction of light emitted from the light projecting unit 21 provided on the front surface can be adjusted in the vertical direction. Yes. That is, the inclination angle adjustment mechanism can adjust the inclination angle in the vertical plane of the light emission direction of the condenser lens 24.

  FIG. 4 is a view showing a state in which the road marking device of FIG. 1 is attached to the side surface of the column. (A) shows a state in which light from the light projecting unit 21 is irradiated to the near side, and (b) shows ( It shows the situation where light was irradiated forward from (b).

  In this figure, the road marking device 1 attached to the column S is provided so as to direct the light projecting portion 21 forward and obliquely downward and project the light L2 emitted from the light projecting portion 21 onto the road. . That is, the light emission direction of the condenser lens 24 is inclined in the vertical plane with respect to the road. In addition, since the light L2 emitted from the light projecting unit 21 is collected in the left-right direction by the condensing lens 24 built in the main body unit 2, the light K that is long in the front-rear direction is connected to the road ahead of the column S It is injected like drawing on the top. That is, the condensing lens 24 draws a line by irradiating a line-shaped light extending in the front-rear direction along the light emission direction on the road. And the direction of the light L2 from the light projection part 21 can be adjusted up and down by rotating the main-body part 2 attached to the support part 3 by the inclination angle adjustment mechanism. That is, the inclination angle in the vertical plane of the light emission direction of the condenser lens 24 can be adjusted. Specifically, the light line K can be formed near the support column S as shown in FIG. 4A, and the light line K can be formed at a position farther forward as shown in FIG. it can.

  By installing the road marking device 1 in this way, if the light line K is formed so as to overlap the stop line of the vehicle provided on the road from the column S standing on the side of the road, the stop at night The visibility of the line can be improved, and the visibility of the stop line during snowfall can be secured. The formation position of the light line K is not limited to the vehicle stop line, and may be provided so as to overlap the lane line of the road or the parking position of the parking lot, and no lane line or the like is formed. You may provide so that the boundary of a road etc. may be shown, and you may provide on the boundary of another road or a road.

  The condensing lens 24 built in the main body 2 does not condense the light L1 emitted from the light emitting diode 25 in the vertical direction, so that the light L2 emitted from the light projecting unit 21 directed obliquely downward to the front is in the vertical direction. Are ejected radially.

  For this reason, the distance between the light projecting unit 21 and the road surface decreases as the main body unit 2 attached to the support unit 3 is rotated to irradiate the light L2 from the light projecting unit 21 to the near side. The length before and after the line K becomes shorter, and the length before and after the light line K becomes longer as the light L2 is emitted farther forward.

  In FIG. 4, the light line K formed when the light L <b> 2 from the light projecting portion 21 is emitted farther forward (b) has a length T <b> 2 before and after the light line K is emitted forward (i). It is formed longer than the length T1 before and after the formed light line K. This is because the distance between the light projecting portion 21 and the light line K is larger in (B) than in (A).

  Thus, since the front and back lengths of the light line K can be adjusted by the rotation of the main body 2, appropriate road marking can be performed without increasing the number of road marking devices 1 installed more than necessary. .

  The road marking device 1 of the present embodiment adjusts the length before and after the light line K drawn on the road by rotating the main body 2 with respect to the support 3. By adjusting the upper and lower mounting positions of the marking device 1, the distance between the light projecting unit 21 and the road can be adjusted, and the length of the light line K drawn on the road can be adjusted. .

FIG. 5 is a diagram showing an embodiment of the installation structure of the road marking device according to the present invention.
In this figure, a curb E is arranged so as to divide the road R on the near side and the sidewalk H on the far side. On the curb E, the line-of-sight guide D fixed to the upper end of the column S is provided. Are arranged along the curb E.

  In this embodiment, the road marking device 1 is attached and provided on the side surface of each column S that is erected for the installation of the line-of-sight guidance mark D. In addition, the road marking device 1 used for the installation structure of the road marking device of this embodiment is the same as that of the embodiment shown in FIGS.

  Each road marking device 1 attached to the support pillar S has its light projecting portion 21 directed obliquely downward in the forward direction, and forms a light line K on the curb E between the adjacent support pillars S arranged. It is provided to do.

  As described above, since each road marking device 1 is provided, the light line K can be clearly seen even at night or when there is snow, so that the boundary and alignment of the road R can be grasped. The occurrence of an accident that contacts the curb E can be suppressed, and the occurrence of an accident such as a pedestrian walking on the sidewalk H kicking the curb E can be suppressed.

  In addition, since each road marking device 1 can be attached to the side surface of the pillar S, in order to install other traffic safety facilities such as the line-of-sight guidance sign D without providing a new pillar S for the installation of the road marking device 1. The road marking device 1 can be installed using a support column S provided near the road.

  In the installation structure of the road marking device of the present embodiment, one road marking device 1 is attached to one column S. However, the present invention is not limited to this, and a plurality of road marking devices 1 are mounted on one column S. May be attached.

  In this case, it is possible to attach the road marking device 1 to the vehicle traveling direction side of the road R and the opposite side thereof to form the light lines K on both sides of the column S, respectively. Assuming the occurrence of an accident such as contact with S, by attaching the road marking device 1 to the side opposite to the side facing the vehicle, the situation where the vehicle directly contacts the road marking device 1 occurs. Is preferable. Further, by installing the road marking device 1 in this way, the light from the light projecting unit 21 is emitted toward the traveling direction of the vehicle, so that this light can be directly input to the driver of the traveling vehicle. Therefore, it is possible to suppress the occurrence of a problem in which the driver of the vehicle is blinded by the light from the road marking device 1.

  Moreover, in the installation structure of the road marking device of the present embodiment, each road marking device 1 is installed using the support column S for installing the line-of-sight guidance mark D. However, the present invention is not limited to this. You may install and attach to the support | pillar S for installing a traffic safety facility.

  Moreover, in the installation structure of the road marking device of the present embodiment, each road marking device 1 is provided at the boundary between the road R and the sidewalk H. However, the present invention is not limited to this, and at the boundary between the roadside belt and the outside thereof. Each road marking device 1 may be provided, or may be provided at the boundary of other roads.

  In addition, in the road marking device 1 shown in FIGS. 1 to 4, if the eaves formed so as to extend along the outer periphery of the light projecting unit 21 are provided to protrude forward of the main body unit 2, Since snow accretion and raindrop adhesion can be suppressed, the light line K can be formed efficiently.

  Further, the light projecting optical system refracts light from the light emitting diode to make it substantially parallel light (including parallel light, light that slightly spreads from this parallel light, or light that is slightly narrowed), and the light collecting lens. And an optical element (for example, a cylindrical lens or a lenticular lens) that spreads light collected by the condenser lens in the vertical direction. If it is such, while being able to adjust the width of a line with the focal length of a condensing lens, the length of a line can be adjusted with the focal length of a cylindrical lens. If comprised in this way, not only the width and length of a line can be adjusted with an inclination angle adjustment mechanism like the said embodiment, but the shape of a line can be adjusted with the lens of a light projection optical system.

  Further, as shown in FIG. 6, the light projecting optical system refracts the light from the light emitting diode 25 to enlarge and form an image of the light emission shape seen from the optical axis direction of the light emitting diode 25 at a predetermined position. The first refracting element 71 and the second refracting element 72 that expands the light emitted from the first refracting element 71 in the vertical direction and deforms the light-emitting image viewed from the optical axis direction of the light emitting diode 25 into a line shape. May be included.

  The first refracting element 71 is, for example, a Fresnel lens (imaging lens), and the distance between the Fresnel lens 71 and the light emitting diode 25 is adjusted so as to form an image on the road by a position adjusting mechanism (not shown). In addition, as a position adjustment mechanism, what adjusts the position of the support member 8 which supports the light emitting diode 25 to the front-back direction, an up-down direction, and the left-right direction can be considered, for example. The second refractive element 72 is a lenticular lens, and is provided in front of the Fresnel lens 71 in the optical axis direction. The shape is that a number of thin semi-cylindrical kamaboko lenses are arranged in the vertical direction. Since the kamaboko type lenses are arranged in the vertical direction in this way, the image of the light emitting diode 25 emitted from the light emitting diode 25 and imaged on the road is in a state of being extended in the vertical direction. Note that the second refractive element 72 may be a cylindrical lens, and more specifically, a cylindrical Fresnel lens (linear Fresnel lens).

  By configuring in this way, the light irradiated on the road is not parallel light but formed as an image, and it is possible to prevent the occurrence of a problem that the outline of the irradiation shape (light line) is blurred. A well-defined line can be drawn on the road or on the road boundary.

  Here, since the light emission direction of the light projecting optical system is inclined in the vertical plane with respect to the road, a part of the line-shaped light irradiated on the road forms an image ( (See FIG. 7). Here, the appearance of the line accompanying the imaging region is shown in FIG. In FIG. 8, when the imaging region is on the near side of the line, the back line becomes thick and blurry. On the other hand, when the imaging region is the center of the line and the back side of the line, it can be seen that the entire line has almost the same thickness and the outline of the line is clear. That is, when the image of the light emitting diode is formed on the road in this way, it is desirable that the image formation region be located from the center of the line to the back side.

  As can be seen from FIG. 8, in any case, it can be seen that although the amount of light on the near side is large, the amount of light on the back side decreases and the line becomes thin. In order to suitably solve this problem, as shown in FIG. 9, two road marking devices 1 are arranged opposite to each other, and the lines from the respective road marking devices 1 are overlapped, so that the light intensity of the entire line is increased. It is possible to make it uniform.

  In addition, some or all of the above-described embodiments and modified embodiments may be combined as appropriate, and the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. .

DESCRIPTION OF SYMBOLS 1 Road marking apparatus 2 Main body part 21 Light projection part 22 Case 23 Protective cover 24 Condensing lens 25 Light emitting diode 26 Protrusion part 3 Support part 31 Attachment plate part 32 Support plate part 33 Through-hole 5 Strut attachment part 51 Front plate part 52 Protrusion Thread 53 Bolt groove 55 Rear plate portion 56 Winding plate portion 57 Flat plate portion 58 Through hole N Bolt / nut D Line-of-sight guide mark E Curbstone H Sidewalk K Line of light R Road S Post

Claims (3)

A road marking device including a light emitting diode and a light projecting optical system that shapes light from the light emitting diode into a line shape,
The light emission direction of the light projecting optical system is inclined in a vertical plane on the road or on the road boundary, and the light projecting optical system is on the road or on the road boundary. The line is drawn by irradiating line-shaped light extending in the front-rear direction along
A road marking device having an inclination angle adjusting mechanism for adjusting an inclination angle in a vertical plane of the light emitting direction of the light projecting optical system.   The road marking device according to claim 1, further comprising a column mounting portion that can be mounted on a side surface of the column to be erected. An installation structure of a road marking device,
The road marking device includes a light emitting diode and a light projecting optical system that shapes light from the light emitting diode into a line shape and emits the light outside, and a light emitting direction of the light projecting optical system is on a road or on a road The light projecting optical system draws linear light extending back and forth along the light emission direction on the road or on the road boundary. And having a tilt angle adjusting mechanism for adjusting the tilt angle in the vertical plane of the light emitting direction of the light projecting optical system, and having a column mounting portion that can be mounted on the side surface of the column to be erected,
The road marking devices are attached to the side surfaces of a plurality of pillars standing at intervals along the road via the pillar attachment portions, respectively.
An installation structure of a road marking device, wherein a line is drawn by irradiating a line-shaped light between the pillars by the road marking devices.