JP3486365B2 - Louver unit for vehicle running path - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a louver unit for a vehicle running path, which is installed at an entrance or exit of a tunnel of a motorway or a railroad, an opening of a cut-out shape, and the like, and exhibits the functions of light control, sound absorption, sound insulation, and ventilation. Is.

[0002]

2. Description of the Related Art A louver for a vehicle running road is constructed by arranging a number of wing-shaped louver members in parallel in the vehicle traveling direction. For example, at the entrance and exit of a tunnel, the difference between the brightness outside and inside the tunnel is reduced. It is mainly developed for the purpose of dimming.

In Japanese Examined Patent Publication No. 57-40288, as a louver for an automobile road, a large number of inclined flat plate-shaped louver members are installed in parallel from the south to the north so that light rays are projected on the inclined surface. It is described that these louver members and vertical barrier plates arranged orthogonally to the louver members are formed with light-transmitting pores to improve the light control function.

Further, in Japanese Examined Patent Publication No. 58-10523, a large number of louver members obtained by bending a flat plate into a dogleg shape or a lateral W shape are similarly installed in parallel from the south to the north, and these louver members are installed. A louver member and a vertical barrier plate arranged orthogonal to the louver member in which light transmitting pores are formed are described.

Further, in consideration of the sound absorption, sound insulation effect and ventilation effect by such a vehicle traveling road louver, for example, as described in Japanese Utility Model Publication No. 6-47932, a hollow louver member having a through hole. It has been developed that is filled with sound absorbing material such as glass wool and rock wool.

[0006]

In terms of the light control function of the louver, it is possible to keep the sunlight radiated directly to the vehicle running path as much as possible by the overlapping of the inclined surfaces or the bent surfaces between the louver members. It is necessary to allow the amount of light to be taken in, and particularly in terms of the sound insulation function, it is desirable to make the interval between the louver members as narrow as possible, or use the bending of the louver members to make it difficult for sound to escape.

On the other hand, with respect to the vehicle traveling path located below the louver, noise generated when the vehicle travels is reflected by the wall surface and reverberates. Therefore, it is desirable to have a structure having a high sound absorbing property as much as possible. These adjustments are necessary because raising the sound insulation may lower the sound insulation performance.

The present invention is intended to solve the above-mentioned problems in the prior art, is excellent in the functions of light control, sound absorption, sound insulation and ventilation, and is less likely to be clogged with dust, etc., and easy to maintain. It is intended to provide a louver unit for a vehicle traveling path.

[0009]

According to a first aspect of the present invention, there is provided a louver unit for a vehicle running path in which a plurality of wing-shaped louver members are arranged in parallel inside a frame member at intervals in the vehicle direction. As the louver member, a hollow box-shaped body having a large number of through holes on a front surface and a rear surface in the vehicle traveling direction and forming a zigzag-shaped cross section bent at one or more positions in the middle in the height direction, and the hollow box. A louver member composed of a sound absorbing material filled in the inside of the hollow body is used, and the sound absorbing material is made to have a low density in the lower part and a high density in the upper part of the hollow box-shaped body.

The most common form of the frame member is a rectangular frame of strip material made of steel or the like, but there is no particular limitation on the outer shape or the like, and the end portion is a tunnel entrance / exit or a structure part of a cut road, etc. Anything that can be installed in If necessary, a girder material or the like can be added in the middle to reinforce.

Since the front and rear surfaces of the louver member have a zigzag cross-sectional shape, the probability of sound reflection is increased and the sound insulation effect is excellent while ensuring ventilation in ventilation. Further, due to the zigzag cross-sectional shape, there is a high degree of freedom in designing regarding blocking of direct sunlight and dimming.

The zigzag cross section bent at one or more points in the middle of the height direction includes a dogleg shape bent only at one point and a lateral W shape bent at three points. As the material for the hollow box-shaped body, a metal such as steel plate, stainless steel, and aluminum is mainly used, but it is also conceivable to use reinforced plastic or other synthetic resin.

In the case of a metal hollow box-shaped body, if the surface roughness is increased by dull finish (dull gray matte finish) or the like, the reflection of light is controlled by diffusing light,
It can reduce glare.

Further, a photocatalyst may be applied to the surface of these to prevent surface contamination and purify exhaust gas. The method of forming the through holes of the hollow box-shaped body is not particularly limited, but it is economical to form the hollow box-shaped body with punching metal or expanded metal.

As the sound absorbing material, glass wool, rock wool or the like used in the conventional louver member or the like can be used, but it is particularly preferable if it is a sound absorbing material which can be filled and held in a hollow box-shaped body having a through hole. Not limited.

Further, the object of the present invention includes the reduction of noise in the vehicle traveling path located below the louver and the reduction of noise leaking to the outside. For noise, the sound absorption performance should be improved by keeping the density of the sound absorbing material in the lower part where the sound is directly transmitted relatively low. To reduce external noise, the density of the upper sound absorbing material should be higher than that in the lower part. The sound insulation performance is improved by.

The density of the sound absorbing material at the upper part and the density of the sound absorbing material at the lower part are relative, and the design is such that the cross-sectional shape, dimensions, site conditions, etc. of the tunnel or the cut road where the louver is installed. Also depends on.

The invention according to claim 2 of the present application is characterized in that, in the louver unit for a vehicle traveling path according to claim 1, a part of the louver member projects downward from other louver members. Is.

When applied to a tunnel entrance and exit or a ceiling of an excavated road, an air flow in the vehicle traveling direction is generated on the lower surface of the ceiling part by a traveling vehicle passing therethrough. Therefore, by partially protruding the louver member, It captures the airflow, discharges it together with the exhaust gas to the outside, and takes in fresh air from the outside in the form of natural circulation of air to enhance the ventilation effect.

According to a third aspect of the present invention, in the vehicle traveling path louver unit according to the first or second aspect, a through hole is not provided in a portion of the hollow box-shaped body exposed to the outside of the louver unit. The open area ratio of the through holes in the portion not exposed to the outside of the louver unit is 50 to 70%.

By not providing a through hole in the portion of the hollow box-shaped body exposed to the outside of the louver unit, rainwater and the like are mainly prevented from directly entering, and dirt and dust enter the interior filled with the sound absorbing material. This is to prevent this, but since there is no through hole in this portion, it is also advantageous in terms of sound insulation effect.

The porosity of other parts is 50 to 70%.
The reason is that the sound absorbing effect is enhanced as much as possible.
However, if the open area ratio is 70% or more, there is a risk that the surface of holding the sound absorbing material and the maintenance for some inflow of rainwater or dust will be troublesome.

In order to obtain such a porosity, it is considered economical to use punching metal or expanded metal. Further, in the case of punching metal, if the outer peripheral portion of the punching hole as a through hole projects to the outer surface of the hollow box-shaped body, the rainwater inflow suppressing effect is enhanced.

[0024]

FIG. 1 shows an embodiment of a louver unit for a vehicle running road according to the present invention. The louver unit 1 includes a frame member 2 in which vertical girders 2a and horizontal girders 2b are assembled in a rectangular shape. A large number of wing-shaped louver members 3 having a zigzag-shaped cross section inside are arranged in parallel in the vehicle traveling direction to form a panel shape.

The louver unit 1 formed in such a panel shape is, for example, in the case of the excavated road 11 shown in FIG.
It is installed on the opening and constitutes a louver for dimming, sound absorption, sound insulation and ventilation.

In this example, each louver member 3 is formed in a zigzag shape in which the front surface and the rear surface are bent at two positions in the height direction in the cross section, and the lower bent portion is convex in the vehicle traveling direction. As shown in FIG. 3, a zigzag-shaped hollow box body is filled with a sound absorbing material 4 such as glass wool so that the sound absorbing material 4 is dense at the top and coarse at the bottom.

Further, the louver member 3 filled with the sound absorbing material 4
The hollow box-shaped body is made of punching metal having a large number of through holes 5, and has a structure in which noise when the vehicle passes is absorbed by the sound absorbing material 4 through the through holes 5.

FIG. 4 is an explanatory view of the arrangement of the through holes 5 and the open area ratio. When the maintenance, sound absorption and sound insulation effects are taken into consideration, as shown in the figure, a hollow box-shaped louver unit outside which directly receives rainwater is shown. The through hole 5 is not provided in the part exposed to the side,
The open area ratio of the through holes in the part not exposed to the outside is 50 to 7
It is desirable to set it to about 0%.

FIG. 5 is an explanatory diagram regarding the packing density of the sound absorbing material 4. As described above, the sound absorbing material 4 has a low density below the louver member 3 and the sound absorbing material 4 has a high density above the louver member 3. By so doing, it is possible to enhance the sound insulation effect to the outside while enhancing the sound absorption effect to the sound generated inside.

FIG. 2 shows an embodiment of a louver unit for a vehicle running road according to claim 2 of the present application, in which a part of the louver members 3a projects downward from the other louver members 3. I am using.

This is to improve the ventilation efficiency by catching the air flow in the traveling direction of the vehicle generated by the passage of the vehicle by the louver member 3a protruding downward from the other louver members 3.

FIG. 6 shows an example of the shape and arrangement of the louver member 6 in another embodiment of the vehicle traveling road louver unit according to claim 1 of the present application. About sideways W bent at 3 points
It has a letter shape.

Also in this case, the sound absorbing material 4 has a low density in the lower part of the louver member 6 and the sound absorbing material 4 has a high density in the upper part of the louver member 3, thereby enhancing the sound absorbing effect for the sound generated inside. The sound insulation effect to the outside is enhanced.

[0034]

According to the louver unit for vehicle running road of the present invention, the probability of sound reflection is increased because the front and rear surfaces of the louver member have a zigzag shape while ensuring air permeability between the front and rear louver members. Excellent in. By making the sound absorbing material low density in the lower part of the louver member,
The sound absorbing effect against the sound generated inside is excellent, and the sound absorbing effect against the outside is also high due to the high density of the sound absorbing material above the louver member. By ensuring the air permeability, it is possible to prevent dust and dirt from accumulating between the louver members to some extent, and relatively easy maintenance for clogging between the louver members. Due to the zigzag shape of the louver member, there is a high degree of freedom in design in blocking direct sunlight and controlling light. In the invention according to claim 2, the louver member protruding downward from the other louver members has an effect of capturing the air flow in the vehicle traveling direction generated by the passage of the vehicle, and the exhaust gas generated by the vehicle is generated together with the air flow. The effect of discharging it to the outside is high. In the invention according to claim 3, the through hole is not provided in the portion of the hollow box-shaped body exposed to the outside of the louver unit,
It also prevents rainwater and dirt from entering directly, which is advantageous in terms of sound insulation. In addition, a large sound absorbing effect can be expected by setting the open area ratio of the other portions as high as 50 to 70%.

[Brief description of drawings]

1A and 1B show an embodiment of a louver unit for vehicle traveling road according to the present invention, wherein FIG. 1A is a vertical sectional view in a vehicle traveling direction, and FIG. 1B is a bottom view.

FIG. 2 is a vertical cross-sectional view in a vehicle traveling direction showing an embodiment of a louver unit for vehicle traveling road according to claim 2 of the present application.

FIG. 3 is a vertical cross-sectional view showing an example of the shape and arrangement of the louver member in the embodiment of FIG. 1 or FIG.

FIG. 4 is an explanatory diagram regarding an aperture ratio due to a through hole in claim 3 of the present application.

FIG. 5 is an explanatory diagram regarding a packing density of a sound absorbing material.

FIG. 6 is a vertical cross-sectional view showing an example of the shape and arrangement of a louver member in another embodiment of the vehicle traveling road louver unit of the present invention.

FIG. 7 shows the louver unit installation position when the vehicle traveling road louver unit of the present invention is used in the upper opening of an excavated road. (A) is a vertical cross-sectional view perpendicular to the road, (b) Is a plan view.

[Explanation of symbols]

1 ... Louver unit, 2 ... Frame member, 2a ... Vertical girder, 2b
... transverse beam, 3 ... louver member, 3a ... louver member protruding downward, 4 ... sound absorbing material, 5 ... through hole, 6 ... louver member,
11 ... Ditching road

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Chitose Shiotani 1-21 Fuso-cho, Amagasaki City, Hyogo Prefecture Sumitomo Metal Construction Materials Co., Ltd. (72) Eiji Kawasaki 2-1-1 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Sumitomo Metal Building Materials Co., Ltd. (56) References JP-A-49-88321 (JP, A) Actual development Sho-49-68818 (JP, U) Actual publication 6-47932 (JP, Y2) (58) Fields investigated ( Int.Cl. ⁷ , DB name) E01F 8/00

Claims (3)

(57) [Claims] 1. A louver unit for a vehicle running road, comprising a plurality of wing-shaped louver members arranged in parallel inside a frame member at intervals in the vehicle direction, wherein the louver members are provided on a front surface and a rear surface in the vehicle traveling direction. A louver member having a large number of through-holes and a hollow box-shaped body having a zigzag-shaped cross section bent at one or more positions in the height direction, and a sound-absorbing material filled in the hollow box-shaped body. A louver unit for a vehicle traveling path, characterized in that the sound absorbing material has a low density in the lower part of the hollow box-shaped body and a high density in the upper part. 2. The louver unit for a vehicle traveling path according to claim 1, wherein a part of the louver member projects downward from the other louver member. 3. The hollow box-shaped body is not provided with a through hole in a portion exposed to the outside of the louver unit, and the aperture ratio by the through hole of the portion not exposed to the outside of the louver unit is 50 to 7.
The louver unit for vehicle running road according to claim 1 or 2, wherein the louver unit is 0%.