JPH10131137A - Nighttime visible member for fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve visibility at night even to a pedestrian, a bicycle without a light, etc., by holding a luminous phosphor on the surface of an annular elastic body, in which an inside diameter is made slightly smaller than the outside diameter of a guard fence post. SOLUTION: Posts 1 are disposed in upright on a ground surface at proper intervals, a plurality of beam pipes 2 are built among the posts 1 and used as guard fences, and annular elastic bodies are clamped near top sections and employed as a nighttime visible members 3. The member 3 is prepared by annularly molding a material, in which a luminous phosphor is kneaded into an elastic high-molecular material such as a synthetic rubber, an elastomer, a natural rubber or the like, at that time. An oxide, a sulfide, a silicate, a phosphate, etc., are mainly comprised as the luminous phosphor. An oxide group has particularly excellent weather resistance, and is proper for outdoor usage and is easy to accumulate light by solar rays and other ultraviolet rays. Accordingly, the member 3 is clamped easily to the post 1 of the guard fence by spreading the member 3 by a hand and a finger, and height after clamping is adjusted readily and the luminous phosphor can be held on the surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member attached to a column of a protective fence to enhance nighttime visibility of the protective fence.

[0002]

2. Description of the Related Art Heretofore, as a method for improving night visibility of a protective fence, a protective fence having a retroreflective reflective material attached thereto or a protective fence to which a reflective sheet is attached has been known.

[0003]

However, in the above-mentioned protective fence, since the nighttime visibility is enhanced by the reflected light, the reflected light of the headlight is visually recognized by the driver of the vehicle. However, the visibility cannot be improved for pedestrians and non-lighted bicycles that do not emit irradiation light. In addition, there was almost no effect immediately before the vehicle turned on the small lamp and turned on the headlight, such as at sunset. In recent years, the above-mentioned problem has been remarkable particularly in a protective fence made to have a color such as dark brown in consideration of the surrounding scenery.

Accordingly, the present inventor has conducted intensive studies in view of the conventional drawbacks, and as a result, has improved nighttime visibility even for pedestrians and non-lighted bicycles that do not emit irradiation light, so that the vehicle can be headed at dusk or the like. It is an object of the present invention to provide a member for night vision of a protective fence capable of obtaining sufficient visibility even before the lamp is turned on.

[0005]

According to a first aspect of the present invention, there is provided a member for visually recognizing a protective fence at night, wherein a phosphorescent phosphor is provided on a surface of an annular elastic body having an inner diameter slightly smaller than an outer diameter of a protective fence post. The night vision member absorbs daytime sunlight and emits night fluorescence to enhance the visibility of the protective fence at night. The annular elastic body refers to an annular body made of an elastic polymer material such as synthetic resin or rubber, and the luminous phosphor is held and the luminous phosphor is applied to the surface of the molded elastic body. This shows not only the affixed material but also a material obtained by kneading a phosphorescent phosphor into a polymer material such as the synthetic resin or rubber and molding the phosphor.

According to the second aspect of the present invention, the nighttime visual recognition member of the protective fence is made of an annular elastic body formed by molding an elastic polymer material into which a phosphorescent phosphor is kneaded, and is easy to manufacture. The phosphorescent phosphor is stably used for a long time without peeling off from the surface.

According to a third aspect of the present invention, the member for night viewing of the protective fence is formed by applying or sticking a phosphorescent phosphor on the surface of an annular elastic body, and the phosphorescent phosphor is coated on the surface of the annular elastic body. Since only a small amount of the phosphorescent phosphor is retained, a sufficient amount of fluorescent light can be obtained, which is economical.

According to the fourth aspect of the present invention, the member for night vision of the protective fence is made of an elastomer having a ring-shaped elastic body, and the elastomer is generally superior in weatherability to natural rubber and thus deteriorates over a long period of time. It is used without stability.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a support, which is erected on the ground surface at appropriate intervals. A plurality of beam pipes 2 are erected between the columns 1 and serve as protective fences. An annular elastic body is fastened to the vicinity of the top of the support column 1 to form a night viewing member 3. The support 1 is generally made of a metal tube having a circular cross section or the like, but is not limited to this, and may have another shape such as a square cross section, or may be made of another material such as stone or concrete.

The night viewing member 3 is made of a material obtained by kneading a phosphorescent phosphor in an elastomer such as synthetic rubber or thermoplastic elastomer or an elastic polymer material such as natural rubber, and has an inner diameter slightly smaller than the outer diameter of the column 1. It is made by molding into a ring,
Elastomers such as synthetic rubbers and thermoplastic elastomers are generally excellent in weatherability and are preferably used.

The luminous phosphor used in the member for night viewing according to the present invention is a light-emitting phosphor which absorbs and accumulates the energy of light such as sunlight or electric light, removes the light source, and gradually emits light in a dark place to emit light. Fluorescent material, such as calcium,
It is mainly composed of oxides such as barium and zinc, sulfides, silicates, phosphates and the like. Of these, oxides are particularly excellent in weather resistance and are suitable for outdoor use. In addition, they are easily stored by sunlight or other ultraviolet light, and shine all night if they absorb and accumulate daytime sunlight. Further, the emitted luminescence can be visually recognized even from a distance, and the luminescence peak is generally around 520 nm, and the visibility is good as a color.

Attachment of the member for night viewing of the protective fence of the present invention
The ring-shaped night-vision member is spread by hand and fastened near the top of the column of the protective fence. In addition, it is preferable that the protection fence is installed below the uppermost beam pipe 2 if it is installed below the uppermost beam pipe 2, and it is preferable that the protection fence is installed above the uppermost beam pipe 2 when it is installed on the existing protection fence. good. Attach double-sided tape to the inner surface of the night vision member,
It is preferable to apply an adhesive because it is harder to come off.

[0014]

As described above, since the nighttime visual recognition member of the protective fence according to the first aspect of the present invention is an annular elastic body whose inner diameter is slightly smaller than the outer diameter of the protective fence post, it can be spread by fingers. It is easily fastened to the column of the protective fence and the height adjustment after fastening is easy, and the phosphorescent phosphor is held on the surface. It fluoresces and enhances the visibility of the protective fence at night.

Further, the member for night vision of the protective fence according to claim 2 of the present invention is formed by molding an annular elastic body by molding an elastic polymer material into which a phosphorescent phosphor is kneaded. It is easy and can be used stably for a long time without the phosphorescent phosphor being peeled off from the surface.

Further, the member for night vision of the protective fence according to claim 3 of the present invention is a member in which a phosphorescent phosphor is applied or affixed to the surface of a ring-shaped elastic body, and the phosphorescent phosphor is made of a ring-shaped elastic body. Since the phosphor is held only on the surface, a sufficient amount of fluorescent light can be obtained with a small amount of the phosphorescent phosphor, so that it is economically excellent.

Further, in the night vision member according to the fourth aspect of the present invention, the annular elastic body is made of an elastomer, and the elastomer generally has better weatherability than natural rubber, so that it deteriorates for a long time. It is used without stability.

[Brief description of the drawings]

FIG. 1 is a front view of a protective fence showing an example of an embodiment of the present invention.

FIG. 2 is an enlarged front view around a column shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Prop 2 Beam pipe 3 Night viewing member

Claims (4)

[Claims] 1. A member for night vision of a protective fence, wherein a phosphorescent phosphor is held on a surface of an annular elastic body having an inner diameter slightly smaller than an outer diameter of the protective fence post. 2. The member for night vision of a protective fence according to claim 1, wherein the annular elastic body is formed by molding an elastic polymer material into which a phosphorescent phosphor is kneaded. 3. The member for night viewing of a protective fence according to claim 1, wherein a phosphorescent phosphor is applied or affixed to the surface of the annular elastic body. 4. The member for night viewing of a protective fence according to claim 1, wherein the annular elastic body is formed by molding an elastomer.