JP3153379B2 - Noise barrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof wall which is installed around a road or a factory to prevent noise, and more particularly to a soundproof wall for attenuating a diffracted sound from the upper edge of the wall to the backside thereof. .

[0002]

2. Description of the Related Art Conventionally, as this kind of sound insulating wall, for example, Japanese Patent Publication No. 51-46969 discloses a sound insulating wall having a columnar sound absorbing material fixed along the upper edge of the sound insulating wall. Japanese Utility Model Laid-Open Publication No. 1-138909 discloses a sound absorbing tube provided along an upper edge of a sound insulating wall, and the inside of the sound absorbing tube is divided into a plurality of parts by a partition plate.

[0003]

However, in each of the conventional soundproof walls, the sound absorbing material or the sound absorbing cylinder is provided continuously over the entire length of the upper edge portion of the sound insulating wall. However, it is necessary to increase the surface area of the sound absorbing material or the sound absorbing cylinder, and there is a problem that a considerably large sound absorbing material or the sound absorbing cylinder is required. Moreover, when the sound insulation wall is made of a transparent plate, there is a problem that the transparency of the upper edge of the sound insulation wall is impaired. In addition, since the peripheral surface of the sound absorbing material or the sound absorbing cylinder is formed as a sound absorbing surface, the sound absorbing surface facing upwards is easily affected by ultraviolet rays, rain, snow, etc., and the sound absorbing effect is easily reduced as a whole, and the durability is improved. There is a problem that is inferior.

An object of the present invention is to provide a soundproof wall which solves such a conventional problem.

[0005]

In order to solve the above-mentioned problems, the present invention provides a large number of sound absorbers along the upper edge of a sound insulation wall, and makes the sound absorption surface of the sound absorber a vertical shape substantially perpendicular to the sound insulation wall. The sound absorbing power is increased by increasing the area.
That is, the soundproof wall of the present invention is provided with a large number of sound absorbers at predetermined intervals along the upper edge of the sound insulation wall, and each sound absorber is formed in a substantially vertical thick plate shape substantially orthogonal to the sound insulation wall. Both sides are sound absorbing surfaces, and the sound absorbing surfaces of adjacent sound absorbing bodies are opposed to each other.

[0006]

[Function] Even if the height of the sound insulating wall is not increased, the diffracted sound circling from the upper edge to the back side is absorbed from the sound absorbing surface of the sound absorbing body. Since the sound absorbing surface of the sound absorbing body is made vertical,
It is hardly affected by ultraviolet rays, rain, snow, and the like, and a decrease in the sound absorbing effect of the sound absorbing body is suppressed. In addition, by adjusting the intervals between the sound absorbers, the sound absorbing effect in a specific frequency region can be improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a sound insulating wall, which may be any conventionally known one made of a suitable material such as concrete, metal, synthetic resin, or a composite material thereof, and the structure is not particularly limited. The sound insulating wall 1 has a sound absorbing function.
It may have, or may not have.
The sound insulating wall 1 is provided at a road side end, around a factory, or the like to prevent noise.

Reference numeral 2 denotes a sound absorber, for example, as shown in FIG.
A large number are provided at predetermined intervals along the upper edge of the sound insulating wall 1. The sound absorbing body 2 is formed in a substantially vertical thick plate shape that is substantially perpendicular to the sound insulating wall 1, and has a circular shape as shown in FIG. 3 or a triangular shape, a square shape, a polygonal shape, and a long shape as shown in FIGS. Any shape such as a circular shape may be used.

Generally, as shown in FIGS. 2 and 3, the substantially vertical thick plate-shaped sound absorbing body 2 is protected by a surrounding edge 3 made of a steel plate, an aluminum molded product, or the like, and has a vertical sound absorbing surface. A perforated plate 5 such as a punched metal or an expanded metal is provided on both left and right side surfaces of the frame 4, and a sound absorbing material 6 is filled in a frame formed by the surrounding edge 3 and the perforated plate 5. As the sound absorbing material 6, a material absorbing noise of an unspecified frequency, such as glass wool or rock wool, is used, and is generally used by being covered with a resin film and protected. The surrounding edge 3 is a perforated plate and has a sound absorbing hole.
May be. The sound absorbing body 2 may be one in which aluminum fiber or ceramic sound absorbing plates are provided on both left and right sides to be the sound absorbing surface 4 and the inside is hollow.

When the sound absorbing body 2 is mounted on the sound insulating wall 1, generally, the sound absorbing body 2 is provided with an insertion recess 7 extending from the lower end thereof to the vicinity of the upper portion via a central portion. As shown in FIG. That is, if the insertion concave portion 7 is provided in the sound absorbing body 2, it can be easily attached to the existing sound insulating wall 1, which is convenient.

The sound absorbers 2 are individually inserted one by one into the upper edge of the sound insulating wall 1 and bolts, nuts and the like are used.
2, or a plurality of sound absorbing members 2 are inserted into the upper edge of the sound insulating wall 1 at the same time, and bolts, nuts, etc. are connected at predetermined intervals as shown in FIG. May be fixed to the sound insulating wall 1.

As shown in FIGS. 5 and 6, the sound absorbing body 2 is inserted into a horizontally long sound insulating panel 9 and a plurality of recesses 7 are inserted and fixed.
May be attached to the sound insulation wall 1 by being placed on the upper end of the sound insulation wall 1. In this case, the sound insulation panel 9 may have both ends fitted into the groove of the H-shaped support 12 and fixed. The frame 1 is used as the sound insulation panel 9.
A light-transmitting panel in which the light-transmitting plate 11 is provided within 0 is preferably used, but is not necessarily limited to this, and may be any as long as it has sound insulation.

The sound absorber 2 may be mounted so as to protrude above the upper edge of the sound insulating wall 1 without providing the insertion recess 7. In this case, it is preferable that the sound absorbing body 2 is attached using a reinforcing material as appropriate so as not to be unstable. The sound absorber 2 is located above the sound insulating wall 1 as shown in FIG.
It does not protrude, but protrudes only on the front and back sides of the sound insulation wall 1.
It may be. In the case of FIG. 7, FIG. 5, FIG.
Similarly, a panel having a sound absorber 2 is provided on the top of the sound insulating wall 1.
Have been killed.

[0014]

As described above in detail, the soundproof wall according to the present invention has a large number of sound absorbers provided at predetermined intervals along the upper edge of the sound insulation wall, and the sound absorber is a substantially vertical thick plate substantially orthogonal to the sound insulation wall. Since the left and right sides of the vertical shape are sound absorbing surfaces, the sound absorbing area is increased and the sound absorbing power is increased compared to the past.
Diffraction sound can be attenuated.

Also, since the left and right sides of the sound absorbing body are vertical sound absorbing surfaces, the sound absorbing surface is hardly affected by ultraviolet rays, rain, snow, etc., and the sound absorbing effect can be maintained for a long time. Can be improved in durability. Furthermore, since a large number of sound absorbers are provided at predetermined intervals along the upper edge of the sound insulation wall, when the sound insulation wall is made of a transparent plate, the space between the sound absorbers has a see-through effect, and the sound insulation wall has a see-through effect. There is no such thing as spoiling the nature.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing one embodiment of a soundproof wall of the present invention.

FIG. 2 is a partially cutaway enlarged front view of the soundproof wall of FIG.

FIG. 3 is a partially cut-away enlarged sectional view of the soundproof wall of FIG. 1;

FIG. 4 is a partially cutaway sectional view showing another embodiment of the soundproof wall of the present invention.

FIG. 5 is a partially cutaway front view showing still another embodiment of the soundproof wall of the present invention.

FIG. 6 is a partially cutaway front view of the soundproof wall in FIG. 5;

FIG. 7 FIG. 6 is a partial cutaway view showing still another embodiment of the soundproof wall of the present invention.
FIG.

Claims (1)

(57) [Claims] 1. A large number of sound absorbers are provided at predetermined intervals along an upper edge of a sound insulating wall, and each sound absorbing body is formed in a substantially vertical thick plate shape substantially orthogonal to the sound insulating wall, and the left and right sides of the vertical shape are A soundproof wall that is a sound-absorbing surface and has sound-absorbing surfaces of adjacent sound-absorbing bodies facing each other.