KR101145338B1

KR101145338B1 - Road stud

Info

Publication number: KR101145338B1
Application number: KR1020100018397A
Authority: KR
Inventors: 김희규
Original assignee: 김희규
Priority date: 2010-03-02
Filing date: 2010-03-02
Publication date: 2012-05-14
Also published as: WO2011108806A2; WO2011108806A3; KR20110099407A

Abstract

The present invention relates to a road sign bottle having a structure in which the road sign bottle is not easily damaged by an impact, but having excellent reflex reflection performance of the retroreflective body, that is, having a high luminance and a wide range of retroreflective area. In a road sign bottle including an exposed display portion, an anchor portion provided below the display portion and embedded in a pavement, and a plurality of retroreflective bodies mounted on the display portion, the retroreflective body is positioned so that the vehicle irradiation light is incident on the front side of the vehicle. A reflector comprising a reflecting surface formed with a plurality of right-sided conical reflection patterns protruding in a right-angled conical shape toward the rear to recursively reflect the incident surface formed in the incident surface and the refracted light incident on the incident surface and the half of the reflector It includes a reflective coating film formed on the surface of the slope; The central axis CL of the rectangular conical reflection pattern is inclined upward with respect to the imaginary waterline H passing through the vertex of the rectangular conical reflection pattern while forming a right angle with the reflective surface on which the rectangular conical reflection pattern is formed. Having; .

Description

Road Sign {ROAD STUD}

The present invention relates to a road sign bottle, and more particularly to a road sign bottle with improved retroreflective efficiency.

Road signs are installed at regular intervals along the center line, lane, roadside of the paved road to induce the driver to drive safely. In particular, the retroreflective body attached to the road sign bottle reflexes the irradiation light of the headlight of the car to recognize the position of the center line and the shape of the road as in the daytime.

The structure of the road sign bottle generally includes a body 10 installed on the surface of the pavement as shown in FIG. 1, and a plurality of retroreflectors 20 provided on the body 10 to reflect light.

The body 10 of the road sign bottle may be divided into a display unit 11 on which the reflector 20 is mounted and exposed to the outside, and an anchor unit 12 disposed below the display unit 11 and embedded in the pavement. The display portion and the anchor portion may be integrally formed or assembled.

The body of the road sign bottle 10 requires a structure that can prevent the damage of the road sign bottle itself or the departure from the pavement surface.

On the other hand, the retroreflective body 20 of the road sign bottle is very important in that it improves the cognitive performance of the road sign bottle at night or in rainy weather. In particular, due to the development of automobiles and road conditions that are gradually increasing speed, the brightness of the retroreflective body directly affects the safe driving of the car.

A general retroreflective body, as shown in Figure 2 is used in the form of a combination of a triangle faceted by a rhombus or a triangle as a base, produced in the form of a flat film is attached to the road sign.

Such a retroreflective body has the most excellent retroreflective efficiency when installed at right angles to the irradiated light, and the retroreflective efficiency rapidly decreases as the inclination of the irradiated light deviates from the right angle.

On the other hand, since the road sign bottle is directly impacted while contacting the tire of the car, the retroreflective body is installed to be inclined to enhance the durability of the road sign bottle without disturbing the operation of the car. However, the oblique installation of the retroreflective body in this way is a factor that drastically lowers the retroreflective efficiency.

Domestic Registration No. 20-0281813 (registered June 29, 2002) Domestic Publication No. 10-2004-0012643 (published February 11, 2004) Korean Patent Publication No. 2003-0026768 (April 3, 2003)

The present invention has been made to solve the problems of the prior art as described above, the road marker bottle has a structure that is not easily damaged by impact, but excellent in the retroreflective performance of the retroreflective body, that is, having a high luminance and a wide retroreflective range We want to provide a road sign.

In order to solve the above problems, the present invention includes a display unit which is installed on the surface of the pavement, but exposed to the outside, an anchor portion provided below the display unit and embedded in the pavement, and a plurality of retroreflectors mounted on the display unit. In the road sign bottle, the retroreflective body is a right angle projecting in a right angled cone shape toward the rear to retroreflect the incident surface formed in front so that the automobile irradiation light is incident and the irradiation light incident and refracted by the incident surface. A reflector comprising a reflecting surface formed with a plurality of conical reflection patterns, and a reflecting coating film formed on the reflecting surface of the reflector; The central axis CL of the rectangular conical reflection pattern is inclined upward with respect to the imaginary waterline H passing through the vertex of the rectangular conical reflection pattern while forming a right angle with the reflective surface on which the rectangular conical reflection pattern is formed. Having; .

In the above, it is preferable that the reflector is manufactured by injection molding. In the above, the inclination angle θ of the central axis of the rectangular conical reflection pattern is a refractive angle at the incident surface where the rectangular conical reflection pattern is located. It is preferable to have a relationship of 1/2 of b).

In the above, it is preferable that the inclination angle (theta) of the center axis | shaft of the said rectangular cone shaped pattern is 8.9 degrees-18.0 degrees.

In the above, the incidence surface is a plane inclined in the vertical direction with respect to the pavement surface, each of the central axes of the right angled conical reflection pattern formed on the reflective surface may have the same inclination angle.

The incidence surface of the incidence surface has an arc shape, and the central axis of each of the right-angled conical reflection patterns formed on the reflective surface is formed such that the inclination angle increases as the height of the right-sided conical reflection pattern is increased. It may be that.

The present invention as described above, the road sign bottle has a structure that is not easily damaged by the impact, but excellent in the retroreflective performance of the retroreflective body, that is to provide a road sign bottle having a high brightness and a wide range of retroreflective.

1 is a perspective view of a conventional road sign bottle,
2 is a schematic perspective view of a conventional retroreflective body viewed from the rear,
3 is a schematic perspective view of a road sign bottle which is an embodiment according to the present invention;
4 is a plan view of FIG.
5 is a schematic cross-sectional view taken along AA of FIG. 4;
Schematic perspective view of the retroreflective body of FIG.
7 is a view for showing the relationship between the incident angle and the refractive angle,
8 shows a path of irradiated light of a retroreflector to partially retroreflect;
9 shows the path of the irradiation light in the retroreflective body according to the present invention,
10 is a modification of FIG. 5,
11 is a plan view of a road sign bottle according to another embodiment of the present invention;
12 is a schematic front view of FIG. 11;
FIG. 13 is a schematic sectional view taken along line BB of FIG. 12;
14 is another modified example of FIG.
15 is a plan view of a road sign bottle according to another embodiment of the present invention;
16 is a schematic front view of FIG. 15.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

3 is a perspective view of a road marking bottle display unit according to the present invention, FIG. 4 is a plan view of FIG. 3, FIG. 5 is a sectional view taken along line A-A of FIG. 4, and FIG. 6 is a schematic perspective view of the retroreflective body of FIG. 3 viewed from the rear.

The road sign bottle includes a body installed on the surface of the pavement, and a plurality of retroreflectors 200 provided on the body to retroreflect the irradiation light of the vehicle.

The body of the road sign bottle may be divided into a hemispherical display unit 110 mounted with a retroreflective body 20 and exposed to the outside, and an anchor unit (not shown) provided in the lower portion of the display unit 110 and embedded in the pavement. The display unit and the anchor unit may be integrally formed or assembled.

The shape of the body of the road sign bottle can be variously changed according to the embodiment.

In the display unit 110, a plurality of retroreflector seating portions 111 on which the retroreflector 20 is mounted are formed.

The retroreflector 200 is seated on each of the retroreflector seating portions 111.

The retroreflective body 200 includes a reflector 210 manufactured by injection molding, and a reflective coating film 220 coated on the reflecting surface 212 of the reflector 210.

The reflector 210 has an incidence surface 211 formed in front thereof so that the car irradiation light is incident thereon, and a reflecting surface 212 is formed behind the reflector 210 to reflect the irradiation light refracted by the incident surface 211. have.

In addition, a plurality of right angled conical reflection patterns 212a protruding in a right angled cone shape are formed on the reflective surface 212. The right angled conical reflection pattern 212a is formed for retroreflective reflection.

The right angled conical reflection pattern 212a has an angle of 90 ° at its vertices.

In addition, the central axis CL of each rectangular conical reflective pattern 212a is perpendicular to the reflective surface 212 on which the rectangular conical reflective pattern 2212a is formed and passes through a vertex of the rectangular conical reflective pattern 212a. It has an inclination angle θ inclined upward with respect to H).

That is, the angle formed by the central axis CL of the right-angled conical reflection pattern 212a passing through the vertex with all the inclined surfaces of the cone is 45 °.

On the surface of the reflective surface 212, a reflective coating film 220 coated with a material such as aluminum, silver, or the like is formed.

The incidence surface 211 of the reflector 210 of this embodiment is arc-shaped in longitudinal section structure.

Accordingly, as shown in FIG. 7, when the incident angle of the automobile irradiation light incident on the incident surface 211 of the reflector 210 is a, the refractive angle b of the irradiation light incident and refracted by the incident surface 211 may be defined as follows. Can be.

At this time, the angle of incidence and the angle of refraction are angles inclined with respect to an imaginary straight line perpendicular to the plane of incidence 211.

sin b = sin a / refractive index of the reflector

In this embodiment the reflector is polycarbonate and its refractive index is 1.585.

It is assumed that the incident surface 211 extends from 30 ° to 70 ° in the vertical direction with respect to the horizontal plane (paved road surface), and the automobile irradiation light is assumed to be radiated downward by 1 ° based on the vertical direction.

Therefore, the relationship between the incident angle and the refraction angle of the irradiation light according to the vertical position of the incident surface may be illustrated as follows.

Vertical position of the entrance face: 30 ° (P1), 50 ° (P2), 70 ° (P3)

Incident angle of the irradiation light for each position of the incident surface in the vertical direction: 29 ° (a1), 49 ° (a2), 69 ° (a3)

Refractive angle of irradiated light for each vertical position of the incident surface: 17.81 ° (b1), 28.43 ° (b2), 36.09 ° (b3)

As described above, when the longitudinal cross-sectional structure of the incident surface 211 is arc-shaped, the angle of refraction of the irradiation light of the vehicle is different, and the angle of refraction of the irradiation light increases as the vertical position of the incident surface increases (that is, increases from 30 ° to 70 °). Will increase.

As such, irradiated light having different refractive angles must be retroreflected upon encountering a right angled conical reflection pattern 212a.

Even in the case of the incident surface of which the longitudinal cross-sectional structure is arc-shaped, the light path at a predetermined point can be interpreted assuming an inclined plane.

FIG. 8 illustrates the refraction and reflection paths when the central axis of the right-angled conical reflection pattern coincides with a virtual waterline passing through the vertices of the right-sided conical reflection pattern while forming a right angle with the reflective surface on which the right-sided conical reflection pattern is formed.

In this case, light incident between the b and c sections may be retroreflected, but light incident between the a and b sections may not be retroreflected.

Therefore, only about 20-40% of the irradiated light may be retroreflected, and about 60-80% of the irradiated light may not be retroreflected by the rectangular conical reflection pattern of FIG. 8.

FIG. 9 illustrates the refraction and reflection paths when the central axis of the right-angled conical reflection pattern forms a right angle with the reflective surface on which the right-sided conical reflection pattern is formed and has an inclined angle upwardly with respect to an imaginary waterline passing through a vertex of the right-sided conical reflection pattern. It is shown.

At this time, if the irradiated light incident to P1 can be retroreflected past P2, P3, and P4, and if the irradiated light incident to P4 can be retroreflected past P3, P2, and P1, it can be retroreflected over all areas. .

In FIG. 9, the inclination angle θ tilted upward with respect to the imaginary waterline H passing through the vertex of the right angled conical reflection pattern 212a while making the center axis CL of the right angled conical reflection pattern perpendicular to the reflection surface 212 is It can be defined by the following equation.

θ + c = 45 °

b + 2c = 90 °

Thus θ = b / 2

That is, it is possible to retroreflect all the light when the inclination angle θ is 1/2 of the refractive angle b at the incident surface on which the right angle conical reflection pattern is located.

Therefore, when the longitudinal cross-sectional structure of the incident surface is arced, the inclination angle θ in which the central axis CL of the right-angled conical reflection pattern on the reflective surface is inclined with respect to the virtual waterline H is designed as shown in the following example (see FIG. 7). It is desirable to be.

Vertical position of the entrance face: 30 ° (P1), 50 ° (P2), 70 ° (P3)

Angles of inclination of the right-angled conical reflection pattern on the reflective surface: 8.9 °, 14.2 °, 18.0 °

As described above, in the case where the longitudinal cross-sectional structure of the incident surface 211 is arc-shaped, the angles of refraction of the irradiation light of the cars are different, and as the vertical position of the incident surface increases (that is, increases from 30 ° to 70 °), the right-angled conical reflection If the inclination angle of the pattern is increased by the above method, it becomes possible to retroreflect light of 99% or more.

FIG. 10 illustrates a case in which the longitudinal cross-sectional structure of the incident surface forms an inclined straight line, that is, the incident surface forms an inclined plane with respect to the pavement surface.

In this case, the incident angles a in the vertical direction of the incident surface 211 of the reflector 210 are all the same, and therefore, the angles of refraction b in the vertical direction of the incident surface 211 are also the same.

Since the refraction angles b are all the same, each central axis of the right-angled conical reflection pattern 212a has the same inclination angle.

When the incident surface is mounted at an angle of 40 ° with respect to the pavement surface, the incident angle, the refractive angle, and the inclined angle at this time may be designed as follows.

Incident angle of irradiation light: 49 °

Refractive angle of irradiation light: 28.43 °

Tilt angle of right-angled conical reflection pattern: 14.2 °

That is, it is preferable that the inclination angle θ of the central axis is designed to have 14.2 ° in all right-angled conical reflection patterns.

Figure 11 is a plan view of another embodiment according to the present invention, Figure 12 is a front view of Figure 11, Figure 13 is a B-B reference cross-sectional view of FIG.

14 is another modified example of FIG.

15 is a plan view of another embodiment according to the present invention, Figure 16 is a front view of FIG.

11 to 16, a variety of methods may be applied to the method of arranging the retroreflector 200 on the road sign bottle.

In addition, each of the retroreflectors 200 may be disposed to form a right angle in the horizontal direction with respect to the irradiation light as shown in FIG. 13, and may be disposed to be inclined in the horizontal direction with respect to the irradiation light as shown in FIG. 14.

In this case, the horizontal inclination of the central axis of the rectangular conical reflection pattern is preferably 0 °. In some cases, a method in which the central axis has an inclination angle inclined in the vertical direction may also be applied to the horizontal direction.

On the other hand, the reflector 210 requires a fine diffusion function, but the incident surface 211 is exposed to the outside to generate low haze due to scratches, denaturation, etc. of the surface naturally, and the rectangular conical reflection pattern has a mirror surface roughness during mold processing It is not enough to have a diffusion function, so that no separate diffusion treatment is required as a whole.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

The present invention can be used as a road sign.

110: display unit 111: retroreflective body seat
200: retroreflective body 210: reflector
211: incident surface 212: reflective surface
212a: right angle cone reflection pattern
220: reflective coating film

Claims

delete

In a road sign bottle including a display unit installed on a pavement surface and exposed to the outside, an anchor portion provided below the display unit and embedded in a pavement, and a plurality of retroreflectors mounted on the display unit:
The retro-reflective body is a half formed with a plurality of right-sided cone-shaped reflection patterns protruding in a right-angled conical shape toward the rear to retroreflect the incident surface formed in front so that the automobile irradiation light is incident and the irradiated light incident and refracted into the incident surface. It comprises a reflector comprising a slope and a reflective coating film formed on the surface of the reflecting surface of the reflector;
The central axis CL of the rectangular conical reflection pattern is inclined upward with respect to the virtual waterline H passing through the vertex of the rectangular conical reflection pattern while forming a right angle with the reflective surface on which the rectangular conical reflection pattern is formed. Has;
The inclination angle [theta] of the central axis of the rectangular conical reflection pattern has a relationship of 1/2 of the angle of refraction b at the incident surface on which the rectangular conical reflection pattern is located;
Road markers characterized in that.

In a road sign bottle including a display unit installed on a pavement surface and exposed to the outside, an anchor portion provided below the display unit and embedded in a pavement, and a plurality of retroreflectors mounted on the display unit:
The retro-reflective body is a half formed with a plurality of right-sided cone-shaped reflection patterns protruding in a right-angled conical shape toward the rear to retroreflect the incident surface formed in front so that the automobile irradiation light is incident and the irradiated light incident and refracted into the incident surface. It comprises a reflector comprising a slope and a reflective coating film formed on the surface of the reflecting surface of the reflector;
The central axis CL of the rectangular conical reflection pattern is inclined upward with respect to the virtual waterline H passing through the vertex of the rectangular conical reflection pattern while forming a right angle with the reflective surface on which the rectangular conical reflection pattern is formed. Has;
The inclination angle θ of the central axis of the right-angled conical reflection pattern is 8.9 ° to 18.0 °;
Road markers characterized in that.

The method according to claim 3 or 4,
The incident surface is a plane inclined in the vertical direction with respect to the pavement road surface,
And a central axis of each of the right-angled conical reflective patterns formed on the reflective surface has the same inclination angle to each other.

The method according to claim 3 or 4,
The incidence surface has an arcuate profile, and the central axis of each of the right-angled conical reflection patterns formed on the reflective surface is formed such that the inclination angle increases as the height of the right-sided conical reflection pattern is increased. Road sign.