JP2002138419A - Glare-shielding soundproof panel for road, and road structure of expressway and ordinary-road parallel running section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of the glare to a driver for a car traveling on the ordinary road side of a soundproofing panel installed on the road boundary of an expressway and ordinary-road parallel running section. SOLUTION: In the glare-shielding acoustical panel 1 for the road in which a sound absorbing material is housed in the contours 2 made of a metal plate in which a large number of openings for sound absorption are formed to front sections (front plates 4), the back sections (back plates 5) of the contours 2 are composed of the glare-shielded metal plate. Since the back sections of the contours 2 are glare-shielded and the reflection of light is reduced, the problem of the glare by reflection from the back sections of the contours of solar rays or the like is not generated as the driver for the car traveling on the ordinary road side in the expressway and ordinary-road parallel running section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-glare soundproof panel for roads which is installed on a side of a road and has an anti-glare function as well as an anti-glare function as well as an anti-glare function.
Also, the present invention relates to a road structure of an expressway and a general road running section using the antiglare soundproof panel for roads.

[0002]

2. Description of the Related Art In places where noise must be prevented on expressways, soundproof panels are installed on the sides of the road. As the soundproof panel, there is a conventional soundproof panel having a structure in which a sound absorbing material such as glass wool is housed inside a metal shell provided with a large number of sound absorbing openings in a front portion.

[0003] If equipment such as a protective fence installed on an expressway is dazzling due to the reflection of sunlight, anti-glare measures must be taken. However, in the case of the soundproofing panel, since the front side has a large number of sound-absorbing openings such as a perforated plate, there is little reflection, and therefore, there is no problem that the driver of a passing vehicle is dazzling. There is little need to take measures. For this reason, in the conventional soundproof panel,
Anti-glare measures were not considered.

[0004]

However, the back surface of the metal plate outer shell of the soundproof panel is, of course, not a perforated plate or the like but a mere plate. Therefore, the back surface is made of a galvanized steel plate or the like. In this case, sunlight is reflected and dazzling.

[0005] Therefore, if the above soundproof panel is installed at the boundary between the expressway and the general road at the same time, even if there is no problem for the driver of the vehicle running on the expressway, For a driver of a vehicle running on the road side, the reflection of sunlight or the like on the metal plate on the back of the soundproof panel is dazzling, which hinders driving. In addition, it is 2 from setting
After three months, the glare of the reflected light usually disappears due to dust adhering to the surface of the galvanized steel sheet, but until then the reflected light is glare. The present invention has been made in view of the above circumstances, and mainly when a soundproof panel is installed at the road boundary of both an expressway and a general road parallel running section, a driver of a vehicle traveling on a general road side receives sunlight. It is an object of the present invention to provide an anti-glare soundproof panel for roads, which does not cause a problem that the reflection of light is dazzling and hinders traveling, and a road structure using the same.

[0006]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problems is directed to a road anti-glare soundproof panel in which a sound-absorbing material is housed inside a metal plate outer shell provided with a large number of sound-absorbing openings in the front part. The back surface of the outer shell made of a metal plate is made of a metal plate subjected to an anti-glare treatment.

According to a second aspect of the present invention, in the road anti-glare soundproof panel of the first aspect, the metal plate subjected to the anti-glare treatment is a galvanized steel sheet subjected to the anti-glare treatment.

According to a third aspect of the present invention, in the anti-glare soundproof panel for roads according to the first or second aspect, the glossiness (G value) of the metal plate subjected to the antiglare treatment is 180 or less.

According to a fourth aspect of the present invention, in the antiglare soundproof panel for roads according to the first, second or third aspect, a front portion of a metal plate outer shell is formed of an aluminum plate.

According to a fifth aspect of the present invention, in a road structure in which an expressway and a general road run side by side, the antiglare soundproof panel for a road according to the first to fourth aspects is provided on a boundary between the two roads.
It is characterized in that the rear part faces toward the general road and is fitted and installed between pillars that are erected at many intervals.

According to a sixth aspect of the present invention, in the road structure of the fifth aspect, the highway and the general road run side by side at substantially the same height level.

[0012]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. FIG. 1 is a front view of an antiglare soundproof panel for roads (hereinafter, simply referred to as antiglare soundproof panel) 1 according to an embodiment of the present invention, FIG. 2 is a rear view thereof, and FIG. It is sectional drawing. This anti-glare soundproof panel 1
For example, it is usually installed in a plurality of steps between columns (not shown) erected at predetermined intervals on the side of a highway,
This is a structure in which a sound absorbing material 3 is accommodated inside a metal plate outer shell 2 provided with a number of sound absorbing openings in the front part. As shown in FIG. 4, the expressway on which the anti-glare soundproof panel 1 of this embodiment is installed is a highway 10 and a general road 11 at locations where the expressway 10 and the general road 11 run at almost the same height level. 11
Road boundary. The outer shell 2 made of a metal plate is formed in a substantially thin box shape by joining the front plate 4, the rear plate 5, and the side plate 6 by welding and rivets. The front plate 4 is
It is an aluminum alloy plate and has a louver shape having a number of sound absorbing openings 4a formed by cutting and pushing. The back plate 5 is a galvanized steel plate and has a trapezoidal groove 5a at the center of the height for increasing rigidity. The trapezoidal groove 5a also has a function of pressing down the sound absorbing material 3. The side plate 6 is also a galvanized steel plate and has a groove-shaped cross section when viewed from above. 7 is a rivet fixing part, and 8 is a spot welding fixing part.

In the present invention, the rear portion of the metal plate shell 2 is
It is composed of a metal plate that has been subjected to anti-glare treatment. The anti-glare treatment is to make the surface a diffuse reflection surface. The back surface of this embodiment, that is, the back plate 5 is a galvanized steel plate as described above. Therefore, a galvanized steel plate subjected to an antiglare treatment is used.

Various methods can be adopted as a method for performing anti-glare treatment on the galvanized steel sheet. For example, a steel sheet material or a molded article material obtained by cold-forming the steel sheet material is immersed in a molten zinc bath to perform plating, and a plating surface is roughened by adjusting a cooling rate immediately after being taken out of the bath. As a method of adjusting the cooling rate in this method, a method of spraying air-water (spraying water droplets with air) on a molten plating surface at a plate temperature of a certain temperature or more immediately after taking out from the bath and performing gas wiping, or , A method in which the surface of a plated steel sheet plated under ordinary conditions is lightly reduced using a roughened roll to roughen the surface, or a method in which the surface of a plated steel sheet is lightly reduced using a roughened roll during cold forming of the plated steel sheet. Then, various methods such as a method of forming a rough surface, or a shot blast method of forming a rough surface by spraying fine solid particles on a plated steel sheet or a cold-formed product of the plated steel sheet can be adopted. In addition,
The above-described anti-glare treatment may be performed on at least the outer surface of the back plate 5 (the rear surface of the soundproof panel), but may be performed on both surfaces.

The antiglare performance of the galvanized steel sheet subjected to the antiglare treatment is, for example, 20% when evaluated by luminous reflectance ρ.
The above is appropriate, more preferably 30% or more.
The luminous reflectance is defined as φi of the light beam incident on the sample surface from the normal direction, and φr of the light beam reflected at 360 ° around the normal line at an angle of 45 ° to the normal line of the sample surface. Then, the ratio between φr and φi, that is, the luminous reflectance ρ = φr
/ Φi. When evaluated by the G value (Gs (60)) of the specular gloss, the effect can be expected if it is 180 or less, and more preferably 150 or less, and more preferably 100 or less. It is preferable to set the value of the specular gloss to a low value, but it is likely to be up to about 15 in consideration of the manufacturing cost.

According to the above-mentioned anti-glare soundproof panel 1, since the back plate 5 is a galvanized steel sheet subjected to an anti-glare treatment, even if the surface of the galvanized steel sheet is new immediately after installation, it may be new. However, for a driver of a vehicle running on a general road running alongside an expressway, there is no problem that sunlight or reflected light of headlights of an oncoming vehicle is reflected on the back plate 5 of the anti-glare soundproof panel 1 and is dazzling. However, there is no problem that hinders traveling.

The above-mentioned anti-glare soundproof panel 1 is installed at a location where an expressway and an ordinary road run in parallel, and is effective. However, the expressway and the ordinary road run together at almost the same height level. In some places, the effect of the reflected light on the driver is particularly large, so that it is more effective.

In the above embodiment, a galvanized steel plate is used as the back plate 5 of the outer shell 2 made of a metal plate, but other metal plates can be used. In that case, anti-glare treatment according to the used metal plate can be considered. Further, in the embodiment, the front portion having a large number of sound absorbing openings is made of an aluminum alloy plate, but another metal plate may be used, or a metal plate of the same type as the back plate may be used. Further, the structure of the metal plate shell is not particularly limited, and for example, the cross-sectional shape of the metal plate shell may be slightly different.

[0019]

According to the anti-glare soundproof panel for roads of the present invention, the back surface of the metal plate outer shell provided with a large number of sound absorbing openings on the front surface is made of a metal plate subjected to antiglare treatment. However, for a driver of a vehicle traveling on a road near the road on which the anti-glare soundproof panel is installed, there is no problem that sunlight or the like is reflected on the rear portion of the metal plate outer shell and is dazzling. No problem arises.

Since the galvanized steel sheet reflects light well and is dazzling, when the back surface of the metal plate outer shell is a galvanized steel sheet as described in claim 2, the galvanized steel sheet is obtained by subjecting this to an antiglare treatment. The use of a sheet has a particularly great effect.

When the glossiness (G value) of the metal plate subjected to the antiglare treatment is 180 or less, an antiglare effect can be expected.

When the above-mentioned anti-glare soundproof panel for a road is installed on the road boundary of both the expressway and the general road parallel running section, the rear surface of the soundproof panel on the road boundary has good light. If the present invention is applied to a soundproof panel installed on a road boundary, the effect of the antiglare treatment is particularly large, as long as it reflects light, the driver of a vehicle traveling on the general road side has a large effect of glare.

As described in claim 6, in a place where an expressway and a general road run side by side at substantially the same level, the influence of reflected light on the driver is particularly large, so that the antiglare property for roads according to the present invention is obtained. The effect of the soundproof panel is even greater.

[Brief description of the drawings]

FIG. 1 is a front view of a road anti-glare soundproof panel according to an embodiment of the present invention.

FIG. 2 is a rear view of the antiglare soundproof panel for roads of FIG. 1;

FIG. 3 is an enlarged sectional view taken along line AA of FIG.

FIG. 4 is a front view showing a road structure in which the above-mentioned anti-glare soundproof panel for roads is installed at a road boundary between both a highway and a general road running section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anti-glare soundproof panel for roads 2 Outer shell made of metal plate 3 Sound absorbing material 4 Front plate (front portion) 4a Sound absorbing opening 5 Back plate (rear portion) 6 Side plate

Claims (6)

[Claims] An anti-glare soundproof panel for a road in which a sound absorbing material is housed inside a metal plate outer shell provided with a number of sound absorbing openings at a front portion thereof, wherein a back surface of the metal plate outer shell is subjected to an anti-glare treatment. An anti-glare soundproof panel for roads, characterized by being made of a metal plate. 2. The anti-glare soundproof panel for roads according to claim 1, wherein the anti-glare metal plate is a galvanized steel sheet subjected to anti-glare treatment. 3. The glossiness (G) of the metal plate subjected to the antiglare treatment.
3. The anti-glare soundproof panel for roads according to claim 1, wherein the value is 180 or less. 4. The metal shell according to claim 1, wherein the front part of the shell is made of an aluminum plate.
The antiglare soundproof panel for roads according to the above. 5. A road structure in which an expressway and a general road run side by side, a road boundary between the two roads.
4. A highway and a general road, characterized in that the anti-glare soundproof panel for roads according to 4 is installed with a rear portion thereof facing the general road and fitted between pillars that are erected at many intervals. Road structure of the road side running section. 6. The road structure of an expressway / general road parallel running section according to claim 5, wherein the expressway and the general road run at substantially the same height level.