JP2003213632A - Road reflecting mirror - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a road reflecting mirror, simple in structure, easily manufactured, and inexpensive, having a high dew condensation preventing effect and capable of preventing the growth of various germs and mildew in a heat accumulator even in a long-time use. <P>SOLUTION: This road reflecting mirror body has a mirror body having a mirror surface formed to be projected, a back plate whose periphery is welded to the back metal bowl part of the mirror body at the peripheral edge part to support the mirror body, and a metal fitting mounted on the back of the back plate. A layer of heat accumulating material is provided in contact with the back of the mirror body, and a heat insulating material layer is closely interposed between the heat accumulating material and the back plate. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road reflector installed at an intersection or the like.

[0002]

2. Description of the Related Art At present, the most serious problem with such a road reflector is the occurrence of so-called "condensation", which is "cloudiness of the mirror surface" at which the function as a mirror is completely lost. The main cause of this dew condensation is the temperature difference between the temperature of the mirror itself and the ambient air around it. As a conventional technique for eliminating the temperature difference between the outside air and the mirror, for example, the invention of Japanese Patent Publication No. 5-84764 is known. In this structure, a thin heat buffer layer is provided on the back surface of the reflecting mirror, and a heat storage device in which a container such as a bag is filled with an antifreeze liquid (including an aqueous solution) is provided on the back side of the buffer layer.

The provision of the buffer layer between the rear surface of the reflecting mirror and the heat storage layer as described above seems to be useful for preventing dew condensation as described above, but has a drawback that the heat storage effect of the heat storage device is impaired. In addition to being complicated and costly, it is difficult to evenly arrange the container on the back surface of the buffer layer, and a gap is formed, which eventually causes dew condensation on the surface of the reflecting mirror.

Further, since the heat storage device composed of such an antifreezing liquid or an aqueous solution is packed in a container such as a bag and is provided vertically on the back side of the mirror body, the antifreezing liquid or the aqueous solution which is applied only below the accumulating liquid is not placed above the accumulating device. Therefore, the reflection mirror has a crescent-shaped dew condensation above the reflection mirror, resulting in poor visibility and no effect as a mirror body.

Further, the heat storage device of this type is not only a sanitary problem because various bacteria and molds are generated in the heat storage device due to deterioration due to continuous use for a long period of time, and the heat storage device is not only a heat storage device. There was a drawback that the effect of was impaired, or that it gave off a bad odor and caused discomfort.

[0006]

The object of the present invention is that the structure is simple, it is easy to manufacture, the price is low, and the effect of preventing dew condensation is high, and even if it is used for a long period of time, various germs and mold grow in the heat storage device. It is to provide a road reflector that does not happen.

[0007]

A mirror body having a convex mirror surface and a back plate having a peripheral edge portion welded to the rear rim portion of the mirror body to support the mirror body. In the road reflector main body having a mounting bracket provided on the back surface of the back plate, the feature of the invention shown in claim 1 is that the heat storage material is in contact with the back surface of the mirror body. Is provided, and a heat insulating material having aluminum foil attached to at least one surface thereof is closely interposed between the heat storage material and the back plate.

Here, the heat storage material is composed of woody and / or non-woody fibers, a thickening agent, and a clay-like substance obtained by adding an appropriate amount of a preservative containing dimethyl phenyl sulfamide as an effective main ingredient to ethylene glycol. This is the feature of claim 2 above.

Further, it is a feature of the present invention shown in claim 3 that the heat storage material is made of expanded polystyrene containing urethane, acryl and polyethylene. Next, the heat storage material is made of expanded polystyrene containing urethane, acrylic, and polyethylene, which is also a feature of the present invention described in claim 4.

Next, an embodiment of the present invention will be described with reference to the drawings. Thus, FIG. 1 is a front view of the entire structure facing the vehicle,
2 is a side view of the same, FIG. 3 is a rear view thereof, and FIG. 4 is a partial vertical cross-sectional view of the housing body.

As can be seen in these figures, (a) is a column whose end is set up on the shoulder (b) of a road or the like, and the main body (1) is located above the column (a). It is supported by horizontal support rods (c) fixed respectively between the column (a) and the back surface of a plate plate of the mirror body (1) described later.

The longitudinal section of the main body (1) is shown in enlarged form in FIG. That is, (2) is a mirror body made of stainless steel or a synthetic resin material such as acrylic whose surface is plated, and as a matter of course, the surface has a convex shape, which is often seen in running vehicles. It has been sufficiently polished so that

(D) is a plate plate having the support rod (c) fixed to the back surface thereof and having an inner surface facing the back surface of the mirror body (2) with an appropriate gap therebetween. .

Further, in FIG. 4, (3) is a mirror body (1).
Is a heat storage material provided in contact with the back surface of the. This heat storage material (3)
Is a non-wood fiber such as wood or bamboo, which is called pulp, used alone or as a mixture, to which a thickener, ethylene glycol, and a preservative containing an appropriate amount of dimethyl phenyl sulfamide as an effective main ingredient are added. In Although,
In this case, it is important that the heat storage material (3) is clay-like in order to improve the yield when it is placed on the mirror body (2) and to improve the heat storage effect.

As the clay-like heat storage material (3), an outer phenol balloon of an acrylic balloon also has a good heat storage effect, and in particular, a Styrofoam balloon is inexpensive and can be lightened, and a Styrofoam balloon and an acrylic and / or phenol balloon are also available. Was able to obtain a good effect.

Further, a heat insulating material (4) is provided between the heat storage material (3) and the back plate (d). As the heat insulating material (4), a foamed polystyrene sheet containing many balloons such as clay, urethane, acrylic, or polyethylene is used. Furthermore, when a foamed aluminum sheet with aluminum foil attached is used, it has an excellent heat insulating effect. At this time, between the heat insulating material (4) and the heat storage material (3), an intermediate material (5) of aluminum foil is closely interposed in addition to the quality of old newspaper. Thus, the paper material such as the inner old newspaper of this intermediate material (5) has wrinkles formed over the entire surface thereof, which is the heat storage material (3).
And the heat insulating material (4) so as to prevent the heat insulating material (3) and the heat insulating material (4) from peeling off or the heat storing material (3) slipping off and impairing the heat insulating effect. In addition to the above, it has been found that the far infrared effect is particularly large when aluminum foil is used.

The intermediate material (5) is not limited to old newspapers as described above, but may be base paper such as cardboard, various printed waste papers, etc., as long as they have the above-mentioned effects of the present invention. Further, the intermediate material (5) is not only provided between the heat storage material (3) and the heat insulating material (4) as described above, but the intermediate material (5) may be provided between the heat insulating material (4) and the back plate (if necessary). It may also be provided between d). Further, (e) in the figure is a hood provided above the back plate (d) to prevent snow and frost from adhering to the mirror surface in the winter.

In manufacturing the reflecting mirror body (1), the heat storage material (3), the heat insulating material (4), and the intermediate material (5) are enclosed, and then the plate plate (d) and the mirror body ( It is important that the peripheral portions of 2) are tightly welded together to prevent rainwater and the like from entering.

Thus, the road reflector main body (1) having the above-mentioned structure is set up on the road shoulder or the like. However, the temperature rise of the outside air in the daytime or the mirror body (2) heated by direct sunlight is used. The heat is stored in the heat storage material (3) provided on the back surface of the mirror body (2). Further, most of this heat is gradually radiated to the mirror body (2) from the nighttime when the outside air temperature decreases to the morning. As a result, the heat storage material (3) provided on the back surface of the mirror body (2) is temporarily in a relatively high temperature state, which creates an environment in which various bacteria are likely to occur, but since dimethyl phenyl sulfamide was added to the raw material, , It was possible to prevent the generation of various bacteria and the growth of mold inside the heat storage material (6).

Since dimethyl / phenyl / sulfamide is a complex synthetic drug, it is difficult for resistant bacteria to form, and the antibacterial spectrum is 32, which is the conventional organic fungicide such as Bayesimidazole.
Compared with bacteria and below, 254 species are dramatically expanded, and the degree of leaching (water / temperature) is 3 ppm compared to the conventional 3,000 ppm.
And the effective PH was 4 to 8.5 PH was 1 to 1.
It became 3PH. Results Test results in mold resistance test,
The generation of germs and mold was not confirmed by the JIS modified method and the MIL modified method during the test period of 28 days.

As described above, if the mirror body (2) is manufactured in accordance with the existing road reflector, the heat storage material (3) can be obtained without separating the mirror body (2) and the back plate (d). Since the road reflector having the above structure can be attached, the conventional road reflector can be easily and inexpensively converted into a road reflector which does not cause dew condensation. In particular, the size of the mirror body (2) of the road reflector is 600, 800, 1000 mm for the round shape and 450 × 600 mm for the square shape, and the size is determined by the standard. If you make several types, you can fit most existing road reflectors.

[0022]

EXAMPLES Examples of the heat storage material in the present invention will be described. Now, the mirror body (2) is made of stainless steel SS304, 600φ with a thickness of 1 m / m, and the heat storage material (3) is 3 kg of wood fiber and 4 kg of ethylene glycol.
To a suitable thickener, a preservative containing dimethyl phenyl sulfamide as an effective main ingredient and an appropriate amount of water were added and stirred to form a clay.

The heat storage material (3) is made of 10 kg of water, a small amount of preservative containing dimethyl phenyl sulfamide as an effective main component, 3 kg of wood fiber, 4 kg of ethylene glycol (antifreeze), Rheozic 250H (adhesive / Japan). A mixture of pure chemicals manufactured by Junyaku Co., Ltd. is used.
-80 mm / mm) was added at a rate of 1 kg, and it was found that a heat storage effect was obtained by using a phenol balloon outside acrylic balloon or styrofoam and styrene foam plus acrylic and / or phenol balloon .

As this dimethyl phenyl sulfamide, a powder element, a solvent element, and a water dispersoid are known, but the water dispersoid is used here. Also this dimethyl phenyl
The drug stability temperature of sulfamide is -60 ° C to 390.
℃.

Further, as the intermediate material (5), a road reflector constructed by using a so-called ordinary old newspaper was installed in a cold region in winter and the condensation was observed for several days. I got good results. It was also proved that the far infrared ray effect was remarkable even when aluminum foil was used other than this old newspaper.

[0026]

As described above, the heat storage material provided on the back surface of the mirror body is made clay-like and is simply filled between the mirror body and the heat insulating material provided with an appropriate intermediate material, which makes the work easy. And the filled heat storage material is well familiar with the presence of an intermediate material such as paper aluminum foil like an old newspaper, the heat storage material slips down between the heat storage material and the heat insulating material, or falls down and collects, As a result, it was possible to prevent dew condensation on the lower side of the mirror surface, but to prevent scandals such as dew condensation on the upper side.

Further, as a material for the heat storage material, a non-wood fiber such as wood or bamboo, which is called pulp, is used alone or in a mixture, and a thickener, ethylene glycol and an appropriate amount of dimethyl phenyl sulfamide are effectively used. Since a preservative added as a component was used, it is difficult to form resistant bacteria due to the combined synthetic drug, and the antibacterial spectrum is 254 types dramatically compared to 32 bacteria or less of organic fungicides such as Bayes imidazole. Extending, the degree of leaching (water / temperature) is 3 ppm compared to the conventional 3,000 ppm, and effective P
H was 4 to 8.5 PH, but became 1 to 13 PH. Results Test result in mold resistance test, JIS modified method,
The modified MIL method did not confirm the generation of germs or mold during the test period of 28 days.

As an effective test method for confirming this effect, the above-mentioned MIL modified method (MIL STD 810D Me) is used.
method, 508.3 modified method), which is a setting acceleration test according to the actual site, which is more severe than the JIS standard regardless of the number of test bacteria, culture time, medium, etc. This is because it is a test method of.

It is 62 test bacteria (including JIS test bacteria), culture time 60 days, medium SDAPDA M40
Y, 5 levels of evaluation: 0 = no growth of bacteria, 1 = slight growth of bacteria, 2 = small growth of bacteria, 3 = intermediate growth of bacteria, 4 = severe growth of bacteria However, the growth of bacteria was not observed by the road reflector of the present invention.

[Brief description of drawings]

1] Front view of the entire road reflector body

[Fig. 2] Side view of the entire road reflector body

[Figure 3] Rear view of the entire road reflector body

FIG. 4 is a partial vertical sectional view of a mirror body.

[Explanation of symbols]

1, body 2, mirror body 3, heat storage material 4, insulation 5, intermediate material a, prop b, shoulder c, support rod d, back plate e, food

Claims (4)

[Claims] 1. A mirror body having a convex mirror surface, a back plate having a peripheral edge portion welded to a rear rim portion of the mirror body to support the mirror body, and a back plate of the back plate. In a road reflector body having a mounting bracket provided, a layer of a heat storage material is provided in contact with the back surface of the mirror body, and a heat insulating material layer is closely interposed between the heat storage material and the back plate. Road reflector featuring. 2. The heat storage material according to claim 1 is a clay obtained by adding a wood and / or non-wood fiber, a thickener, ethylene glycol and an appropriate amount of a preservative containing dimethyl phenyl sulfamide as an effective main component. A road reflector, which is made of a particulate material. 3. The road according to claim 2, wherein the heat storage material is mixed with styrofoam containing acrylic balloons, phenolic balloons, styrofoam balloons, styrofoam balloons and balloons selected from acryl and / or phenol and the like. Reflector. 4. The heat insulating material layer described in claim 1 comprises a clay-like or styrofoam plate-like body containing urethane, acrylic and polyethylene, or a clay or styrofoam board-like body to which aluminum foil is attached. Road reflector featuring.