JP3990220B2 - Road marking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an arrow blade for marking a road width such as a snow-covered road or guiding a driver's line of sight in bad weather or at night.
[0002]
[Prior art]
Arrow feathers are road marking devices that hang downward on the road, and the roadside is directly under the arrow feathers. By connecting them along the road, the position of the external survey line on the snow-covered road This is to make the driver recognize the camera, and to guide the eyes during bad weather or at night. Arrow feathers include those in which a reflective sheet is simply pasted on a base material such as metal, and those in which a light emitter is provided. By providing the illuminant, it is possible to urge the driver to be alerted by the lighting or flashing thereof, and to improve visibility in bad weather or at night.
[0003]
In order to turn on the light emitter, a power source is required, and some of them use a commercial power source or a solar battery. In particular, solar cells do not require wiring from the outside, and can be installed stand-alone, so the location is limited. Arrow feathers are often installed in places where power is difficult to draw in, for example, in the suburbs of mountainous areas, and the use of solar cells is effective. Recently, not only arrow feathers but also self-luminous road products using solar cells as a power source are widely used.
[0004]
When a solar cell is used, it is necessary to install a light receiving cell that receives sunlight to generate electricity. The solar cells are installed at an angle facing the south surface above a product that is easily susceptible to sunlight. In some cases, there is an automatic tracking type in which the orientation of the solar cells changes depending on the position of the sun.
[0005]
[Problems to be solved by the invention]
In order to cover a sufficient power generation with a solar cell, it is necessary to install the solar cell at an angle at which light is sufficiently incident and to have a certain wide area. However, depending on the installation location, a sufficient installation location may not be obtained, or the cell may not be directed at a suitable angle, and a power generation amount sufficient to light the light emitter may not be obtained.
[0006]
Moreover, since the position of the sun is low in the morning or evening, sunlight is not sufficiently applied to the solar cells, and the electromotive force is extremely reduced. Although there is a solar automatic tracking type to solve these problems, it is not practical because it is expensive.
[0007]
In general, a unit is attached to a solar battery cell separately from an arrow blade, and it takes time and labor to attach it, and attention to handling of wiring and the like is required. Furthermore, attention must be paid to the installation angle of the cell during installation, and the power generation amount may be insufficient if the installation is incorrect.
[0008]
Therefore, the present invention has been made in view of the above problems, and is a light emitting type equipped with a solar cell that can be easily handled and can secure a high power generation amount without much consideration of the position and installation angle of sunlight. The arrow feathers are to be provided.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present inventors have conducted intensive research. As a result, by providing solar cells so that light can be received from both sides in parallel with the surface of the arrow blade body, the installation angle of the solar cells does not matter. Therefore, it has been found that the installation effort is small, and that an extreme electromotive force drop can be prevented in the cycle of the day, and the present invention has been completed.
[0010]
In order to achieve the above object, the present invention is configured as follows. That is, a road marking device in which an arrow feather is suspended downward on a road, and the arrow feather is provided with a solar cell parallel to the surface, and a light receiving surface of the solar battery cell is an arrow. A reflective sheet is affixed to the rectangular portion where the solar cells are arranged, avoiding the light receiving surface, and a horizontal stripe pattern is formed by the reflective sheet and the solar cells. It is a feature.
[0011]
By providing solar cells on the surface of the arrow blade so as to be parallel to the surface, the planar portion of the arrow blade can be used effectively, and a wide light receiving area can be secured. Moreover, installation and handling are easy because the main body of the photovoltaic cell and the arrow blade are integrated. In addition, if it is designed to receive light from both the front and back sides of the arrow blade, it can generate electricity throughout the day without considering the installation direction, and pay attention to the installation angle and orientation of the solar cell. No need to pay.
[0012]
The light emitter attached to the arrow blade is not particularly limited, but an LED is generally used. One or more light emitters may be used, but for example, if a plurality of light emitters are attached so as to follow the outer periphery of the arrow blade, the shape of the arrow blade can be recognized at night and the outer line of the road can be easily recognized. it can. In addition, a plurality of light emitters may be arranged in a line in a straight line, and the driver can easily recognize if there is an outer line below the straight line.
[0013]
Further, the arrow blade is characterized in that a light-transmitting synthetic resin is attached to both surfaces of a double-sided light receiving solar cell. Sunlight can be received from both sides by sandwiching a double-sided light receiving solar cell with a translucent synthetic resin. If sunlight can be received from both sides, the amount of power generation can be secured without much influence on the position of the sun. Therefore, it is not necessary to take the installation direction into consideration during construction. In addition, with double-sided light reception, it is possible to receive not only direct sunlight but also scattered light such as the surrounding snow surface even on a surface where sunlight is not directly irradiated.
[0014]
A normal single-sided solar cell is installed at an angle of 30 degrees on the south surface. The amount of power generation increases with the rise of the sun, reaches a peak around noon, and decreases in the evening. If it is a double-sided light-receiving solar cell, it is not necessary to incline to the south surface, and a high power generation amount can be maintained even when it is installed vertically. For example, when a solar cell is installed in a vertical plane, east-west, there is a peak in the amount of power generation twice a day in the morning and evening due to the position of the sun. In the case of a normal single-sided light receiving cell, even if the power generation amount of both is compared, the power generation amount of the double-sided light receiving type installed vertically should be equal to or greater than that of the single-sided light receiving type cell installed at the optimum angle. Can do.
[0015]
Moreover, the thing which is made to adhere to a photovoltaic cell and pinches | interposes a cell is good for a synthetic resin. The object to be deposited may be made of glass or tempered glass, but if an arrow feather falls in some accident or something collides, there is a risk of cracking or scattering, heavy weight, Since the cost increases, it is preferable to use a synthetic resin. Synthetic resins are relatively resistant to impacts and hardly cracked, and the weight can be significantly reduced, so that handling is easy and the cost can be reduced. Moreover, it is excellent also in terms of workability, and can be easily processed into a desired size and shape. As the synthetic resin, for example, those having translucency such as polycarbonate resin, acrylic resin, polyacrylonitrile resin, vinyl chloride resin, and ABS resin can be used. You may mix and laminate using.
[0016]
The synthetic resin material suitably used as the synthetic resin according to the present invention is a polycarbonate resin. Polycarbonate resin is preferable because it is difficult to crack due to impact, and even if it is cracked, almost no fragments are scattered. The surface of the polycarbonate resin may be subjected to a surface treatment such as coating. Resins are more susceptible to scratches than glass, etc., and are susceptible to yellowing due to deterioration due to ultraviolet rays. In order to prevent this, for example, a silicone or acrylic hard coat may be coated, or a coating containing an ultraviolet absorber may be performed. Moreover, you may give a functional coating to the surface. For example, by forming a photocatalyst layer on a substrate, the dirt can be decomposed by the oxidative decomposition power of the photocatalyst, or dirt attached by super hydrophilicity can be easily washed away by rain, and the surface can be kept clean. It is possible to prevent power generation efficiency from being deteriorated due to dirt. Moreover, if a snow-ice-like covering is formed, even if snow or ice adheres to the surface, it can be quickly slid down. Arrow feathers are often installed especially in snowy countries, and countermeasures against snow and ice are important. If snow or ice adheres to the surface of the solar power generation cell, the power generation efficiency is remarkably lowered. Therefore, the formation of such a covering layer on the surface can prevent the power generation efficiency from being lowered.
[0017]
In addition, when a synthetic resin is applied to both sides of a double-sided light receiving solar cell and the solar cell is sandwiched, it is sealed with a light-transmitting adhesive synthetic resin, and moisture enters from the edge of the base material, causing adverse effects. It is preferable that they are not affected. In this case, a translucent resin can be used as the adhesive synthetic resin. For example, urethane or epoxy adhesives, ethylene-vinyl acetate (EVA), modified polyethylene, modified polypropylene or the like is preferable.
[0018]
In addition, the arrow blade is characterized in that a reflection sheet is attached to the surface other than the solar battery cell. By attaching the reflection sheet, not only the light emitter but also the color tone and retroreflectivity of the reflection sheet can prompt the driver to be alerted. At nighttime, the reflection sheet is retroreflected by the light from the headlight, and the visibility can be improved. In addition, since arrow feathers are often attached to snowy areas, for example, if a red reflective sheet that is easy to visually recognize against surrounding snow is used in combination, the visibility of the color contrast between snow and arrow feathers is improved. Can be increased.
[0019]
Further, a frame having a hollow portion is attached around the arrow blade, and an electric wire connected to a solar cell is inserted into the hollow portion. By attaching the frame body around the arrow blades, the overall rigidity is increased and the strength can be increased. Moreover, an edge part can be protected and there exists an effect which prevents the approach of the water from an edge part. In addition, the frame body can be colored to improve the visibility or to improve the appearance. The material of the frame is preferably a metal such as aluminum or a synthetic resin because it is lightweight. A hollow part that is continuous in the circumferential direction is provided inside the frame body, and if the electric wire that transmits power generated by the solar cell or the electric wire that supplies electric power to the light emitter is inserted into the hollow part, the wiring is protected. In addition, the wiring is not exposed to the outside, which is preferable in terms of appearance. Moreover, since the wiring is not exposed to the outside, it is possible to prevent a person or an object from coming into contact with an electric shock or a short circuit.
[0020]
Further, if the light emitter is attached to the frame, the electric wire for supplying electricity to the light emitter can be inserted into the hollow portion of the frame, and the light emitter can be easily attached.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a general installation view of arrow blades. A pillar 2 is erected on the road side, and an arrow blade is attached to the upper part of the pillar that curves and projects toward the road. This arrow blade is installed to indicate the width of the road to the driver by attaching it over the head of the outer line because the outer line and the side groove of the road cannot be recognized when the road surface is buried during snowfall.
[0022]
FIG. 2 shows an embodiment of the arrow blade according to the present invention. A double-sided light-receiving cell 11 of a solar battery is arranged in parallel with the surface on the plane portion of the arrow blade. The arrow blades are made of a translucent synthetic resin, and the solar battery cell is sandwiched from both sides by the translucent synthetic resin 14. The base material on both sides uses a polycarbonate resin, and is resistant to cracking and hardly scatters even if cracked. When the solar battery cell is sandwiched between synthetic resins, a sealing agent such as EVA resin is used for lamination. If it does in this way, a photovoltaic cell can be sealed and a moisture etc. can be prevented from entering.
[0023]
The arrow blade of FIG. 2 is provided with a light emitter 13 using a solar cell as a power source. In addition, a light emitter control portion 12 is attached to control light emission such as turning on / off or flashing the power. The location and arrangement method of the light emitters are not particularly limited. For example, only the arrow at the tip may be arranged, or the light emitters may be arranged in a row over the entire length. It may be arranged all around. Moreover, LED is generally used for a light-emitting body. The color of the illuminant is preferably red, but is not particularly limited, and may be orange or white depending on the case. The front surface of the LED is preferably covered with a transparent covering and waterproofed.
[0024]
In FIG. 2, when the reflective sheet 16 is affixed to the surface of the translucent synthetic resin 14, since it reflects with the light of a headlight and a color can also be added, visibility improves further. The color of the reflective sheet is not particularly limited, but red is often used because it stands out in the snow. The reflection sheet may be the entire surface other than the solar battery cell portion, or may be a part thereof, and the location to be attached is not particularly limited. In FIG. 2, the reflection sheet is affixed to the arrow part at the tip of the arrow blade, and is affixed to the rectangular part where the solar cells are arranged so as to be striped away from the light receiving part.
[0025]
An aluminum frame 15 is attached to the outer periphery of the arrow blade of FIG. By surrounding the periphery with the frame, the strength of the arrow blade itself can be improved. A hollow portion is provided inside the aluminum frame so that wiring from the solar battery cell, wiring of the light emitting body and a terminal block can be accommodated. Therefore, when the light emitter is attached to the frame, the wiring is not visible from the outside, and looks good.
[0026]
FIG. 3 shows a part of a cross-sectional view of the arrow blade of FIG. A double-sided light-receiving type solar cell 11 is sandwiched between translucent synthetic resins 14 from both sides by using a translucent adhesive synthetic resin sealing material 3. A frame 15 is attached to the end of the arrow blade 1 and has a hollow portion 151 continuous in the circumferential direction of the arrow blade. An electric wire 4 is inserted through the hollow portion, and transmits electricity generated by the solar cell and electricity supplied to the light emitter. In addition, the light emitter 13 is attached to the frame 15. If the light emitter is attached to the frame in this manner, the light emitter can be fixed and wired easily.
[0027]
【The invention's effect】
As described above, by integrating the solar battery, which is the power source of the light emitter for improving the visibility of the arrow blades, with the arrow blades, the wiring and structure are simplified and the handling becomes easy. In addition, by using a double-sided light-receiving cell for the solar cell and placing it on the flat surface of the arrow blade, a sufficient power generation area can be secured and sunlight can be taken in from both sides. A sufficient amount of power generation can be obtained without consideration. As a result, it is possible to reduce the labor and trouble of installation.
[Brief description of the drawings]
FIG. 1 is an installation diagram of a general road marking device of the present invention.
FIG. 2 is a diagram showing an embodiment according to the present invention.
FIG. 3 is a view showing a part of a cross section showing an embodiment according to the present invention.
DESCRIPTION OF SYMBOLS 1 Arrow blade main body 11 Double-sided light reception type solar cell 12 Control part 13 Light-emitting body 14 Transparent base material 15 Aluminum frame body 151 Hollow part 16 Reflective sheet 10 Road outside line 2 Strut 3 Sealing material 4 Electric wire

Claims (3)

A road marking device in which an arrow blade is suspended downward on a road, wherein the arrow blade is provided with a solar cell parallel to the surface, and a light receiving surface of the solar cell is an arrow blade A reflective sheet is affixed to the rectangular portion where the solar cells are arranged, avoiding the light receiving surface, and a horizontal stripe pattern is formed by the reflective sheet and the solar cells. Road marking device.   The road marking device according to claim 1, wherein the arrow blade is formed by attaching a translucent synthetic resin to both surfaces of the double-sided light receiving solar cell. The road marking device according to claim 1 or 2 , wherein a frame having a hollow portion is attached around the arrow blade, and an electric wire connected to a solar cell is inserted into the hollow portion.

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