JP3187467U - Road display device - Google Patents

Abstract

[PROBLEMS] To provide a display device for roads which can exhibit good alertness regardless of day and night and can be manufactured at a low cost with a simple structure.
A display unit 12 for alerting a person is provided. The display unit 12 includes a windmill 14 that can rotate by receiving wind from the front or the back, a back plate 16 that is disposed behind the windmill 14 and has a plurality of air vents 30 formed therein, and a back plate 16. A shaft member 18 that is attached to the face plate 16 and rotatably supports the windmill 14 is provided. The windmill 14 is formed by extending a plurality of plate-like blades 24 around a central member 22. A light reflecting sheet 24a is affixed to the front surface of the blades 24, and the plurality of blades 24 are arranged radially with a gap in front view. The windmill 14 is rotatable by receiving natural wind that has passed through the through holes 30 of the back plate 16.
[Selection] Figure 1

Description

  The present invention relates to a road display device that is installed at a road construction site, an accident handling site, or the like and alerts a driver of a traveling car.

  Conventionally, as disclosed in Patent Document 1, an arm-shaped member that is rotatably provided so that a rotation locus draws a disk-shaped plane, and a plurality of members disposed at predetermined positions on the front surface of the arm-shaped member. There has been a rotary display device provided with a small light emitter, a rotating means for rotationally driving an arm-like member, and a control means for controlling light emission of the light emitter. Compared with a stationary display device, this rotary display device can improve the visibility of the driver of the automobile by the rotation operation of the arm-like member and the blinking operation of the light emitter.

JP-A-8-179712

  In the case of the rotary display device of Patent Document 1, during the daytime, the presence of the illuminant is reduced by receiving sunlight, and only an effect equivalent to the rotation of an arm member that is not easily noticeable can be obtained. Can not realize sufficient alertness. In addition, a power source (for example, a power source for driving the motor) and a control device for rotating the arm-shaped member have to be prepared, which causes inconvenience in terms of installation cost and maintainability. .

  The present invention has been made in view of the above-described background art, and can provide a road display device that can exhibit good alertness regardless of day and night and can be manufactured at a low cost with a simple structure. The purpose is to do.

In this device, a display unit that alerts a person's attention is a windmill that can be rotated by receiving wind from the front or behind, and a plate that is disposed behind the windmill, and a plurality of wind vents are provided on the inside. And a shaft member that is attached to the back plate and rotatably supports the windmill,
The windmill has a plurality of plate-shaped blades extending around a central member, a light reflecting sheet is attached to the front surface of the blades, and the blades are spaced from each other when viewed from the front. It is a road display device that is arranged in a radial pattern and is rotatable by receiving natural wind that has passed through the plurality of through holes of the back plate.

  The back plate preferably has a black surface color on the front side. Further, the central member has a low-profile columnar outer shape, provided with a plurality of streak-like grooves arranged spirally along the peripheral surface thereof, and provided with an attachment portion at one end of the plurality of blades, The attachment portions of the plurality of blades are fitted and fixed inside the streak-like grooves of the central member.

  The display device for roads of this invention is different from the stationary display device in that the rotating motion of the blade with the light reflecting sheet attached, the change of the pattern drawn by the back plate and the plurality of through holes that are visible and hidden from the gap between the blades of the windmill Thus, visibility from the driver side can be improved, and good alertness can be exhibited regardless of day or night. In addition, since the windmill can rotate by receiving natural wind, no special power source or control device is required, the structure can be simple and can be manufactured at low cost, and maintenance is easy.

It is a perspective view which shows the display apparatus for roads of one Embodiment of this invention. It is a front view which shows the windmill of FIG. It is a bottom view which shows the center member of FIG. It is the front view (a) which shows the blade | wing of FIG. 2, and a right view (b). It is a bottom view explaining the structure of the part which attaches a blade | wing to a center member. They are the front view (a) right side view (b) and bottom view (c) which show the backplate of FIG.

  Hereinafter, an embodiment of a road display device of the present invention will be described with reference to the drawings. In the road display device 10 of this embodiment, as shown in FIG. 1, the display unit 12 is attached to the windmill 14, the rear plate 16 disposed behind the windmill 14, and the rear plate 16 to rotate the windmill 14. The display unit 12 is supported by the support unit 20 at a predetermined height.

  As shown in FIG. 2, the windmill 14 includes a center member 22 and four blades 24. The center member 22 is obtained by attaching a slightly large-diameter decorative plate 28 to one end face of a low-profile columnar main body 26. As shown in FIG. 3, the main body 26 is provided with a plurality of streak-like grooves 22 a arranged spirally along a cylindrical peripheral surface. The width of the streak-like groove 22a is slightly narrower than the thickness of the blade 24 described later. In addition, a shaft hole 22b is formed at a center position of the center member 22 by providing a bearing (not shown) that penetrates the main body 26 and the decorative plate 28 and supports the shaft member 18. The outer shape of the main body 26 is, for example, about 80 mm in diameter and about 30 mm in height.

  As shown in FIG. 4, the blade 24 is a substantially trapezoidal plate having a light reflecting sheet 24 a attached to one surface, and has an arc shape at an end portion on the short side (left end portion in FIG. 4). A mounting portion 24b is provided. The light reflecting sheet 24a is a sheet of a retroreflecting material that reflects light incident from any direction in the direction of the light source, and a high brightness reflecting sheet using a prism lens or a light reflecting capsule as a reflecting element is suitable. is there. For example, the outer shape of the blade 24 may be set to about 250 mm in length and about 150 mm in the long side according to visibility from the driver, standards, and the like.

  When attaching the blades 24 to the central member 22, as shown in FIG. 5, the attachment portions 24b of the blades 24 are inserted into the corresponding streak-like grooves 22a to be firmly fixed. At this time, the four blades 24 are arranged so that the light reflection sheet 24a is on the front side, and the blades 24 are attached so as to be radially positioned with a gap therebetween when viewed from the front. In the case of the windmill 14, the gaps between the adjacent blades 24 are about 70 degrees in rotation angle, and the back plate 16 is visually recognized as the background from the gap of about 70 degrees. The four blades 24 are substantially parallel to each other along the inclination of each streak-like groove 22a, and can rotate by receiving wind from the front and rear while the windmill 14 is pivotally supported by the shaft member 18. Become.

  As shown in FIG. 6, the back plate 16 is a disk-like plate that is slightly larger than the windmill 14, and the entire front surface is colored black. In addition, a shaft member 18 that is a rod-shaped rotating shaft projects from a center position on the front side of the back plate 16. The shaft member 18 is inserted into the shaft hole 22b of the center member 22, and supports the windmill 14 rotatably with low friction. In addition, a plurality of air vents 30 for air vents are formed in the back plate 16 in a rotationally symmetrical position around the shaft member 18. The outer shape of the back plate 16 is, for example, an outer diameter of about 600 mm and an inner diameter of one through hole 30 of about 60 mm.

  A fixing bracket 32 for fixing the back plate 16 to the upper end portion of the support column 20 a of the support unit 20 is attached to the back side of the back plate 16. The fixing metal fittings 32 are formed by bending the central portion of a metal plate into a substantially U shape, and are provided at two locations away from the center of the back plate 16 in the diametrical direction.

  The support unit 20 includes a tripod 20b installed on the ground and a support column 20a that rises substantially vertically from the upper end of the tripod 20b. The height adjustment unit 20c can change the height of the upper end of the support 20a. it can. The upper end portion of the support column 20a is inserted into the U-shaped inner side of the two fixing brackets 32 of the back plate 16, and the U-shaped both end portions are screwed to the back plate 16 to be fixed to the back plate 16. It is clamped between the metal fittings 32 and fixed.

  When the road display device 10 is installed at a road construction site or the like in the state of FIG. 1, the windmill 14 rotates by receiving natural wind passing through the through holes 30 of the back plate 16. For example, even when there is no meteorological atmospheric flow (even in a so-called no wind condition), a car that wants to be alerted rotates in response to the entrainment wind when passing nearby. During the daytime, as the windmill 14 rotates, the back plate 16 and the plurality of through holes 30 appear and disappear from the gaps between the blades 24, and the change in the pattern alerts the driver. In particular, since the front side of the back plate 16 is colored black, the contrast with the portion of the through hole 30 becomes clear and the change in the pattern is conspicuous. On the other hand, at night, although the contrast between the back plate 16 and the through hole 30 becomes somewhat unclear, the light reflecting sheet attached to the rotating blades 24 reflects the light emitted from the automobile light and reflects it. The rotating pattern drawn by the light strongly draws the driver's attention.

  As described above, the road display device 10 is different from the stationary display device in that the blade 24 with the light reflecting sheet 24a is rotated, the back plate 16 and the transparent plate 16 that are visible and hidden from the gap between the rotating blades 24. Visibility from the driver's side can be improved by changing the pattern drawn by the holes 30, and good alertness can be exhibited regardless of day or night.

  In addition, the windmill 14 can rotate by receiving natural winds (meteorological atmospheric flow, entrainment wind when the automobile passes, etc.), so that no special power source or control device is required and the structure is simple. It can be manufactured at low cost and is easy to maintain. In particular, as shown in FIGS. 2 to 5, the windmill 14 has a structure in which a plurality of blades 24 are attached to the center member 22, and the size and number of blades 24 of the windmill 14 can be freely changed. The ease of rotation of the wind turbine 14 with respect to the natural wind can be freely adjusted according to the environmental conditions of the installation location. The same effect can also be obtained by preparing a plurality of central members 22 having different streak-like grooves 22a and using the central member 22 for each installation location.

  The road display device of the present invention is not limited to the above embodiment. The wind turbine 14 is assembled by separately forming the center member and the blades. For example, when mass-producing wind turbines having the same shape, the center member and the blades are integrally formed to improve the production efficiency. Can be improved.

  The outer shape of the back plate can be freely set such as a circle, an ellipse, a triangle, a quadrangle, and a polygon as long as it can be a background of the windmill when viewed from the front side. In addition, the plurality of through holes can be easily viewed from the driver, and the natural wind for rotating the windmill can pass sufficiently. The arrangement can be changed freely. The color of the surface on the front side of the back plate is not limited to black, and other colors may be selected in consideration of design and the like within a range where the contrast of the pattern drawn by the back plate and the through holes is clear.

  The bearing structure in which the rod-shaped shaft member 18 of the windmill 14 is supported is also selected as appropriate, and the shaft member 18 is inserted into the shaft hole 22b for bearing by the center member 22 itself in order to reduce the cost. If a structure using a ball bearing for the bearing is used, the frictional resistance when the windmill rotates can be further reduced.

  In addition, the structure for installing the display unit can be changed as appropriate depending on the installation location. For example, instead of the installation structure using the support unit 20 described above, a structure may be employed in which the back plate of the display unit is screwed or suspended on a structure such as a guard rail.

DESCRIPTION OF SYMBOLS 10 Road display apparatus 12 Display part 14 Windmill 16 Back plate 18 Axis member 22 Center member 22a Streaky groove 24 Blade 24a Light reflection sheet 24b Attachment part 26 Main body 30 Through-hole

Claims (3)

A display unit for alerting a person's attention is a windmill that can be rotated by receiving wind from the front or from the back, and a plate disposed behind the windmill, and a plurality of through holes for venting are provided inside. The formed back plate, and a shaft member attached to the back plate and rotatably supporting the windmill,
The windmill has a plurality of plate-shaped blades extending around a central member, a light reflecting sheet is attached to the front surface of the blades, and the blades are spaced from each other when viewed from the front. A road display device that is arranged in a radial pattern and is rotatable by receiving natural wind that has passed through the plurality of through holes of the back plate.   The road display device according to claim 1, wherein the back plate has a black front surface. The central member has a low-profile columnar outer shape, provided with a plurality of streak-like grooves arranged spirally along its peripheral surface, and provided with an attachment portion at one end of the plurality of blades,
The road display device according to claim 1, wherein the attachment portions of the plurality of blades are fitted and fixed inside the streak-like grooves of the central member.

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