JP2005282016A - Wooden soundproof wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wooden soundproof wall capable of providing the soundproof effect, the sound insulating effect and the purification effect of exhaust gas and air, capable of improving an areal scenery of an installation place, and capable of providing even the healing effect by harmony with nature. <P>SOLUTION: A sound coming out of an automobile traveling on a road, is absorbed by a carbonized sound absorbing material B formed by mixing a charcoal chip and a raw chip filled or stored inside a wall frame 2 for constituting the wooden soundproof wall 1, and is reflected and diffused in the various directions by a plate material 3 fixed to a front face of the wall frame 2. The sound intruding inside the wall frame 2 is mutually reflected on the reverse surface side of the plate material 3 and a plate material 6. The sound reflected toward the road side is reduced. The sound is prevented and insulated by preventing the sound from leaking to an external part of the wall frame 2 and the sound from passing through to the rear side. A toxic substance included in the exhaust gas and the air of the automobile, is decomposed, absorbed and purified by a component included in the raw chip of the carbonized sound absorbing material B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wooden sound barrier that reduces noise and exhaust gas emitted from, for example, roads, railways, airfields, factories, construction sites, etc., or is used as a sound barrier for buildings such as houses and buildings.

  Conventionally, as the above-mentioned soundproof wall, for example, a moistureproof soundproof wall of Patent Document 1 in which wood chips are packed in a box-type external main body made of iron bond plywood, a sound absorbing material such as glass wool, and a plurality of logs are laminated. There is a wooden soundproof wall of Patent Document 2 housed in a space inside a wooden panel. However, the moisture-proof and sound-proof wall of Patent Document 1 is made of metal for the entire outer wall surface of the external main body, so that the sound reflectivity is high, and most of the sound emitted from the automobile is reflected toward the sound source side. Sound absorption and absorption effects cannot be obtained sufficiently. In addition, the wood chip does not have a function of adsorbing or holding fine substances and fine particles contained in the exhaust gas and air, and an effect of purifying the exhaust gas and air of the automobile cannot be obtained. On the other hand, the sound-absorbing material filled in the wooden soundproof wall of Patent Document 2 has no function of decomposing and absorbing harmful substances contained in the exhaust gas and air of automobiles and is purified so as to reduce the influence on the natural environment. Effect is not obtained.

JP 2002-201616 A. Utility Model Registration No. 3040316

  In view of the above problems, the present invention fills the inside of a wooden wall frame having a substantially box shape with a carbonized sound absorbing material obtained by mixing charcoal chips obtained by carbonizing a tree and raw chips obtained by crushing the tree at a predetermined ratio. Alternatively, it is an object to provide a wooden soundproof wall that can provide a soundproofing effect, a soundproofing effect, and an exhaust gas / air purification effect by housing.

  The present invention relates to a wooden soundproof wall in which a carbonized sound absorbing material in which charcoal chips obtained by carbonizing a tree and raw chips obtained by pulverizing the tree are mixed in a predetermined ratio is filled in a wooden wall frame having a substantially box shape. It is characterized by being. Alternatively, a carbonized sound-absorbing material in which charcoal chips obtained by carbonizing a tree and raw chips obtained by pulverizing the tree are mixed in a predetermined ratio is filled in a breathable storage bag, and the carbonized sound-absorbing material is filled. It is characterized by being a wooden soundproof wall in which the storage bag is accommodated inside a wooden wall frame having a substantially box shape.

  The trees used for the above-mentioned charcoal chips and raw chips can be composed of, for example, thinned wood, waste wood, dead trees, garden trees, pruned wood, street trees, bamboo, and the like. Carbonized sound-absorbing materials include the above-mentioned waste wood, dead trees, garden trees, pruned wood, street trees, bamboo, and other single or composite charcoal chips (charcoal, bamboo charcoal, etc.), cedar and bamboo charcoal. It is preferable to use a carbonized material in which a single or composite raw chip obtained by pulverizing, crushing, or chopping thinned wood is mixed in a desired ratio (1: 1). The raw chip contains a component that decomposes and absorbs, for example, nitrogen dioxide (NO2). When the carbonized sound absorbing material is filled or contained inside the wall frame, for example, the inside of the wall frame is directly filled, or the gap between each plate material fixed to the front of the wall frame with a breathable net-like sheet is covered Then, the sheet is directly filled into the wall frame where the sheet is laid, or the breathable accommodation bag filled with the carbonized sound absorbing material is accommodated inside the wall frame. In addition, the wooden wall frame can be formed or assembled into a substantially box shape using, for example, a plate or a pillar made of thinned wood such as cedar or straw. The above-mentioned tree can also be used instead of the thinned wood.

  That is, the sound emitted from a sound source such as an automobile traveling on a road is absorbed and absorbed by a carbonized sound absorbing material formed by mixing charcoal chips and raw chips filled or housed in a wall frame constituting a wooden soundproof wall. Reflects and diffuses in various directions on the outer peripheral surface of the plate material fixed to at least one of the front and rear surfaces of the frame, reducing the sound reflected toward the sound source side (road side), outside the wall frame The sound is prevented from leaking and passing through to the rear side, and sound insulation and sound insulation are performed. In addition, harmful substances contained in exhaust gas and air are decomposed and absorbed by components contained in the raw chips and purified.

  As an embodiment, at least one of the charcoal chips and the raw chips can be made of thinned wood. A plurality of plate members fixed to at least one of the front and rear surfaces of the wall frame can be arranged at a predetermined interval along one surface of the wall frame. Further, a plurality of plate members fixed to the front and rear surfaces of the wall frame can be arranged alternately. Further, the plate member fixed to at least one of the front and rear surfaces of the wall frame can be formed of a plate member having a cross-sectional shape that reduces the reflectance of the sound reflected toward the sound source side. Further, the cross-sectional shape of the plate material is, for example, a substantially semicircular shape, a substantially arc shape, a substantially semielliptical shape, a substantially saddle shape, a substantially hemispherical shape, a substantially round shape, a substantially trapezoidal shape, or an uneven shape having a distorted surface, a porous shape A single or composite cross-sectional shape such as a shape or a polyhedral shape can be used. In addition, a sound insulating plate that insulates or reflects sound that passes through the wall frame in the thickness direction can be disposed on the rear surface of the wall frame or inside the wall frame. In addition, the sound insulating plate can be constituted by a plate made of a single material or a composite material such as wood, metal, plastic, ceramics or the like. Moreover, the said wall frame can be comprised with a thinning material of a cedar or a cocoon, and the utilization range of a thinning material becomes wide.

  According to this invention, the sound emitted from the sound source is absorbed and absorbed by the carbonized sound-absorbing material obtained by mixing the charcoal chips filled with or housed in the wall frame constituting the wooden soundproof wall and the raw chips, and before and after the wall frame. Reflected and diffused in various directions on the outer peripheral surface of the plate fixed to at least one side of both surfaces, reducing the sound reflected toward the sound source side, leaking sound outside the wall frame and sound on the rear side Since passing through is prevented, a higher soundproofing effect and soundproofing effect than the conventional wooden soundproof wall can be obtained. In addition, since harmful substances contained in exhaust gas, air, and the like are decomposed and absorbed by the components contained in the raw chips, a purification effect that reduces the influence on the natural environment can be obtained. In addition, the improvement of the local landscape of the road / installation location and the harmony with nature can provide a driver's healing effect, and the range of use of thinned wood can be widened to enhance forest maintenance.

  The wooden soundproof wall of the present invention is a mixture of charcoal chips obtained by carbonizing a tree and raw chips obtained by pulverizing the tree in a predetermined ratio for the purpose of obtaining a soundproofing effect, a sound insulating effect, and an exhaust gas / air purification effect. The carbonized sound-absorbing material thus formed can be achieved by filling or accommodating the inside of a wooden wall frame having a substantially box shape.

  An embodiment of the present invention will be described in detail with reference to the drawings.

  The drawings show a first example of a wooden noise barrier installed to reduce noise and exhaust gas emitted from an automobile traveling on a road which is an example of a sound source. In FIG. 1 and FIG. 7, this wooden noise barrier is shown. 1 includes, for example, charcoal chips Ba ... and raw chips Bc made of trees such as waste wood and thinned wood, in the left and right space portions 2A, 2A inside the wall frame 2 having a substantially box shape made of thinned wood such as cedar and firewood. The carbonized sound-absorbing material B, which is substantially uniformly mixed, is placed directly on one side or both sides of the road, for example, by filling or bagging.

  The above-mentioned wall frame 2 is composed of plate members 3, columns 4, 4, core columns 5, plate members 6, headboard 7, and bottom plate 8, as shown in FIGS. 2 and 3. Surrounding these members, the space portions 2A and 2A are divided into left and right parts.

  In addition, the right and left sides of the back side of the plate member 3 formed in a substantially semicircular shape with a substantially semi-circular shape so that the reflectance of the sound reflected toward the road side as the sound source is reduced substantially correspond to a predetermined installation size. Pressed against the front surfaces of a pair of left and right support columns 4 and 4 formed in a substantially cross-sectional square shape arranged at intervals and the front surface of the core column 5 disposed approximately in the middle of the left and right support columns 4 and 4 and viewed from the front surface And the bolts 9 fitted or embedded so as to protrude to the front side of the columns 4 and 4 and the core column 5 are formed at both ends and the center of the plate 3. 3a is inserted through the hole 3a, and nuts 10 are screwed from the front side to the projecting side ends of the bolts 9 so that a gap is formed between the plate members 3 ... A plurality of sheets are fixed in the up-down direction (or left-right direction) along the front surface of the wall frame 2. It is also possible to change the space between the plate members 3 to a desired interval.

  Note that the front side of the plate 3 directed toward the sound source side is, for example, a substantially arc shape or a substantially semi-elliptical shape having a smooth curved surface in which sound emitted from the sound source is reflected and diffused in various directions and the sound reflectance is small. It can be formed into a desired cross-sectional shape such as a shape, a substantially saddle shape, a substantially hemispherical shape, an uneven shape having a distorted surface, a porous shape, or a polyhedral shape. Further, instead of the plate 3, for example, a single plate in which a large number of holes are formed at a predetermined interval can be used.

  Further, the rear surface of the wall frame 2 is formed so as to be substantially horizontal when viewed from the front surface by pressing the rear surface side flat portion of the curtain plate side plate material 6 formed in a substantially rectangular cross section against the rear surfaces of the columns 4, 4 and the core column 5. And a plurality of concave portions 6b and convex portions 6c that are continuously formed in the longitudinal direction along the upper and lower opposing ends of the plate 6 that has been subjected to eye-jipping. The bolts 9 fitted or embedded so as to protrude to the rear side of the columns 4 and 4 and the core column 5 are inserted into the holes 6a formed at both ends and the center of the plate 6. Then, the nuts 10 are screwed into the projecting side ends of the bolts 9 inserted through the holes 6a from the rear surface side so that the entire rear surface side of the wall frame 2 is closed and concealed. The wall frame 2 having a substantially cylindrical shape whose upper and lower surfaces are opened Put. Instead of the plate 6, one plate formed in a size and shape that conceals the entire rear surface of the wall frame 2 can be used. The bolts 9 project from the front and rear surfaces of the metal plate at a predetermined interval.

  In addition, the lower surface side plane portion of the headboard 7 having a substantially cross-sectional semicircular shape formed in such a size and shape that the upper surface side opening 2a of the wall frame 2 is closed is formed by using the uppermost plate members 3 and 6 and the columns 4 and 4. And the bolts 12 which are pressed against the upper end surfaces of the core pillars 5 so as to protrude toward the upper end sides of the pillars 4 and 4 and the core pillars 5 are formed in the hole portions 7a formed at both ends and the central portion of the headboard 7. The nut 13 is screwed from the upper surface side to the projecting side end of the bolt 12 inserted through the hole 7a, so that the upper surface side opening 2a of the wall frame 2 is closed and concealed. Fasten and fix the coping 7 to the top.

  On the other hand, if the fastening with the bolts 12 and nuts 13 is released and the headboard 7 is removed, the upper surface side opening 2a of the wall frame 2 is fully opened, and as shown in FIG. The left and right space portions 2A and 2A inside the wall frame 2 on which the net-like sheet Ca is laid are directly charged and filled with a predetermined amount, or as shown in FIG. 5, the carbonized sound absorbing material B is filled with a predetermined amount. Operations such as accommodating the cartridge-type accommodation bag Cb in the space portions 2A and 2A inside the wall frame 2 can be performed. In addition, when replacing the carbonized sound absorbing material B with reduced sound absorbing ability and purification capacity, the headboard 7 is removed and the carbonized sound absorbing material B is discharged from the upper surface side opening 2a of the wall frame 2 or filled with the carbonized sound absorbing material B. The stored storage bag Cb can be easily and easily replaced by taking it out from the upper surface side opening 2a of the wall frame 2. The carbonized sound absorbing material B may be directly filled into the left and right space portions 2A and 2A inside the wall frame 2. Further, the space portions 2A and 2A can be integrated into one. Further, in place of or in combination with the bolts 9 and 12 and the nuts 10 and 13, for example, a fixing means such as a nail, a screw, a clasp, a wire, or an adhesive can be used.

  In addition, the upper surface side plane portion of the bottom plate 8 having a substantially cross-sectional rectangular shape formed in such a size and shape that the lower surface side opening 2b of the wall frame 2 is closed is pressed against the lower end surfaces of the columns 4, 4 and the core column 5. Alternatively, the bottom plate 8 is fastened and fixed with the above-described bolts, screws, or the like in a state where the lower surface side opening 2b of the wall frame 2 is closed and concealed by pressing against the lower end surfaces of the lowermost plate members 3 and 6.

  In addition, although the above-mentioned board | plate materials 3, 6, the support | pillar 4 and the core pillar 5, the headboard 7, the bottom board 8, etc. use thinning materials, such as a cedar, a firewood, and a lauan, for example, wood other than the thinning material is used. You can also. In the embodiment, the preservative is injected or applied only to the plate members 3 and 6, but the preservative is also injected or applied to the column 4, the core column 5, the headboard 7, and the bottom plate 8 other than the plate members 3 and 6. Also good.

  The carbonized sound absorbing material B includes, for example, single or composite charcoal chips Ba (charcoal, bamboo charcoal, etc.) obtained by carbonizing wood such as waste wood, dead trees, garden trees, pruned wood, street trees, bamboo, and cedar. It is composed of a carbonized material obtained by substantially uniformly mixing a single or composite raw chip Bb. In addition, the carbonized carbon chips Ba... Are fine holes so that harmful substances, odor particles, and other fine particles contained in, for example, exhaust gas and air are adsorbed and sound is absorbed and absorbed. Many are formed. In addition, the raw chips Bb... Contain components that decompose and absorb, for example, nitrogen dioxide (NO2). It is also possible to change the ratio of the charcoal chips Ba ... and the raw chips Bb ... so that one of the ratios increases. Further, the thinned material can be used for at least one of the char chips Ba ... or the char chips Ba ... and the raw chips Bc ... constituting the carbonized sound absorbing material B.

  When the above-described carbonized sound-absorbing material B is filled or accommodated in the wall frame 2, as shown in FIG. 4, a waterproof net-like sheet Ca having air permeability is provided in the space portions 2A and 2A inside the wall frame 2. The wall frame in which the sheet Ca is laid after being inserted and laid in a state where the gap between the plate members 3 fixed to the front surface of the wall frame 2 is covered and prevented from flowing out from the gap. 2 is charged directly into the internal space 2A, 2A and filled with a predetermined amount. Alternatively, as shown in FIG. 5, the carbonized sound-absorbing material B is filled and packed in a predetermined amount in a waterproof net-like storage bag Cb having air permeability, and then the storage bag Cb containing the carbonized sound-absorbing material B is filled. It is accommodated in the space portions 2A and 2A inside the wall frame 2. In addition, if it is a raw material which has air permeability, the sheet | seat and bag which were formed, for example with a textile fabric, a nonwoven fabric, paper, cloth, etc., or the sheet | seat, bag, etc. in which many ventilation holes were formed can also be used.

  The belts Cc attached to the four corners or both ends of the storage bag Cb are gripped by the operator's hand to facilitate the operation of taking out the storage bag Cb from the space portions 2A, 2A inside the wall frame 2. . Instead of the belt Cc, for example, a string, a ring, a hook, or the like may be attached.

  As shown in FIGS. 6, 7, and 8, the wooden sound barrier 1 assembled as described above has a substantially cross-sectional H-shaped (commonly known as H steel) embedded in the upper end of a concrete base 14. The support frames 15 and 15 are fitted and fixed between the frames 15 and 15 from above. The support frames 15 and 15 are arranged on one side or both sides (or the center) of the road with a left and right interval at which the left and right ends of the wooden soundproof wall 1 are allowed to be fitted. It is erected on the upper end of the base 14 driven into a separation band or the like. In addition, the front support piece 15a and the rear support piece 15a of the support frame 15 are separated from each other by a front-rear interval in which the outer end portions of the support column 4 and the plate member 6 are allowed to be inserted. In addition, the groove portions 4a and 4a having a groove width into which the end portion of the front support piece 15a of the support frame 15 is allowed to be inserted are arranged along the front-side outer edge portions of the support columns 4 and 4 facing the both end portions on the back surface side of the plate 3. It is formed continuously in the vertical direction.

  The support frames 15 and 15 may be fixed to the upper end of the base 14 with, for example, bolts or screws, or the base 14 may be constructed of a material other than concrete, such as metal, wood, or plastic. Further, the support frames 15 and 15 may be made of a metal, wooden, or plastic frame having a cross-sectional shape such as a substantially T-shaped shape or a substantially cross-sectional L-shaped shape in addition to H steel, for example.

  9 and 10, the wooden soundproof wall 1 of the second example is configured by fixing plate members 3 having substantially the same cross-sectional shape so as to be symmetric with respect to the front and rear surfaces of the wall frame 2. The front and rear support pieces 15a and 15a have groove widths 4a and 4a having a groove width that is allowed to be inserted in the vertical direction along the front and rear surface outer edges of the columns 4 and 4, and are made of, for example, a metal such as a zinc iron plate or a stainless steel plate. The sound insulation plate 16 made of metal is fitted into the left and right space portions 2A and 2A inside the wall frame 2 and divided into two front and rear portions, and the divided front and rear space portions 2A and 2A are directly filled with the carbonized sound absorbing material B or carbonized. The housing bag Cb filled with the sound absorbing material B is accommodated. In addition, since the front and back and the top and bottom of the wooden soundproof wall 1 are symmetrical, the directionality is not limited, and either one of the surfaces can be installed in the front-rear direction or can be installed upside down. Moreover, it can be installed not only on one side and both sides of the road, but also in the median strip of the road. In addition, the part of the same structure as the wooden soundproof wall 1 of a 1st example attaches | subjects the same code | symbol, and abbreviate | omits the detailed description.

  When the sound absorption coefficient of the wooden soundproof wall 1 is measured by the reverberation chamber method sound absorption coefficient measurement method, a measurement result is obtained that the sound absorption coefficient (%) is equal to or less than a legally stipulated reference value. Moreover, when the transmission loss of the wooden soundproof wall 1 is measured by the sound transmission loss measurement method, a measurement result is obtained that the transmission loss (dB) can be reduced to a reference value or less stipulated by law.

  The illustrated embodiment is configured as described above, and a method for absorbing, soundproofing and purifying with the wooden soundproof wall 1 will be described below.

  First, the wooden soundproof wall 1 shown in FIG. 1 in which the plate 3 is fixed to the front side of the wall frame 2 or the wooden soundproof wall 1 shown in FIG. 10 in which the plate 3 is fixed symmetrically on both front and rear surfaces of the wall frame 2. 6 to 9, one piece is fitted between the support frames 15 and 15 of the base 14 driven along one side or both sides of the road, or a plurality of pieces are stacked vertically. The plate 3 fixed to the front of the wall frame 2 or one of the surfaces of the wooden soundproof wall 1 by being fitted or the like is directed toward the road as the sound source, and continuously along one or both sides of the road. Install.

  The sound emitted from the automobile traveling on the road is reflected in a direction orthogonal to the sound source of the plate member 3 fixed to the front surface of the wall frame 2 of the wooden soundproof wall 1 and is opposite to the sound source. The sound hitting the outer peripheral surface of the plate material 3 is reflected and diffused in various directions. And the sound which reflects mutually on the back surface side of the board | plate material 3 ... and the board | plate material 6 ... and reduces toward the road side (or front side) reduces the sound which tries to pass through the thickness direction of the wall frame 2. 6 and the sound insulating plate 16 are sound-insulated or reflected to prevent the sound from leaking outside the wall frame 2 and passing through the rear side.

  Moreover, the wooden soundproof wall 1 shown in FIG. 6 absorbs and absorbs the sound that passes through the gap between the front side plate members 3 and enters the inside of the wall frame 2 with the carbonized sound absorbing material B filled or accommodated in the wall frame 2. Soundproof and soundproof. On the other hand, the wooden soundproof wall 1 shown in FIG. 9 is a carbonized sound absorbing material B in which the sound that passes through the gap between the front and rear plate members 3 and enters the inside of the wall frame 2 is filled or accommodated in the front and rear and left and right space portions 2A and 2A. Absorbs and absorbs sound and provides sound insulation.

  In addition, nitrogen dioxide (NO2), which is the main element of nitrogen oxides contained in the exhaust gas and air of the automobile that enters through the gap between the front and front and rear plate members 3 ..., is filled with or contained in the wall frame 2 and is contained in the carbonized sound absorbing material. While being decomposed and absorbed by the components contained in the raw chips Bb of B, the chemical substances and odor particles contained in the exhaust gas and air are the surfaces of the carbon chips Ba ... and the raw chips Bb of the carbonized sound absorbing material B. Or is adsorbed in a number of holes formed in the charcoal chips Ba to purify the exhaust gas and air of the automobile.

  As described above, with the carbonized sound-absorbing material B formed by mixing the sound emitted from the automobile traveling on the road with the charcoal chips Ba ... and the raw chips Bc ... filled or contained in the wall frame 2 constituting the wooden soundproof wall 1. The sound is absorbed and absorbed, and is reflected and diffused in various directions on the outer peripheral surface of the plate 3 fixed to the front side and the front and rear surfaces of the wall frame 2 to reduce the sound reflected toward the road side, and the wall frame 2 Since the sound is prevented from leaking to the outside and the sound from passing through to the rear side, a higher soundproofing effect and soundproofing effect can be obtained than the wooden soundproof wall of the conventional example. Moreover, since harmful substances contained in the exhaust gas, air, etc. are decomposed and absorbed by the components contained in the raw chips Bc..., A purification effect that reduces the influence on the natural environment can be obtained. In addition, the improvement of the local landscape of the road / installation location and the harmony with nature can provide a driver's healing effect, and the range of use of thinned wood can be widened to enhance forest maintenance.

  FIG. 11 shows a third example of the wooden soundproof wall 1 in which a plate material 3 </ b> A having a substantially round cross-section with approximately 1/4 cut is fixed to the front surface of the wall frame 2, and the front surface of the wall frame 2 constituting the wooden soundproof wall 1. The plate material 3A fixed to the road is the sound source, and the sound that penetrates through the gap between the plate material 3A and enters the wall frame 2 is absorbed by the carbonized sound absorbing material B filled or accommodated in the wall frame 2. Absorbs and absorbs sound to purify automobile exhaust and air. Further, the sound hitting the circumferential surface of the plate material 3A ... other than the portion orthogonal to the sound source is reflected and diffused in various directions, and the sound hitting the opposing outer peripheral surface between the upper and lower plate materials 3A ... Reflect towards In addition, since the sound reflected by the back surfaces of the plate material 3A and the plate material 6 is reduced and the sound reflected toward the road side is reduced, and the sound that tries to pass back and forth is blocked by the plate material 6 ..., the wall frame 2 It is difficult for sound to leak to the outside, and operations and effects substantially equivalent to those of the above-described embodiments can be achieved. In addition, the amount of excision of the plate material 3A can be changed to, for example, about 1/4 or less.

  FIG. 12 shows a fourth example of a wooden soundproof wall 1 in which plate members 3 having a substantially semicircular cross-section are fixed to the front and rear surfaces of the wall frame 2 so as to be alternately staggered, opposite to the gap between the front plate members 3. The rear plate member 3 is fixed, the front plate member 3 is fixed opposite to the gap between the rear plate members 3, and the sound that penetrates through the gap between the front and rear plate members 3 into the wall frame 2 is 2. Sound absorption and absorption are performed by the carbonized sound absorbing material B filled or accommodated in the interior to purify the exhaust gas and air of the automobile. In addition, the sound reflected on the back side of the front and rear plate members 3 is reduced to reduce the sound reflected toward the road side, and the sound that passes through the front and rear is blocked by the plate members 6. Is less likely to leak, and can exhibit substantially the same operations and effects as the above-described embodiments. Moreover, it can be installed not only on one side and both sides of the road, but also in the median strip of the road. Moreover, it is also possible to fix the plate members 3.

  FIG. 13 shows a fifth example of the wooden soundproof wall 1 in which the plate members 3 having substantially the same cross-sectional shape are fixed so as to be symmetric with respect to the front and rear surfaces of the wall frame 2, and pass through the gap between the front and rear plate members 3. The sound entering the inside of the wall frame 2 is absorbed and absorbed by the carbonized sound absorbing material B filled or accommodated in the inside of the wall frame 2 to purify the exhaust gas and air of the automobile. In addition, in order to reduce the sound reflected on the back side of the front and rear plate members 3 and 6 and the intermediate plate member 6 to reduce the sound reflected toward the road side, and to intercept the sound that tries to pass back and forth with the intermediate plate member 6. It is difficult for sound to leak to the outside of the wall frame 2, and operations and effects substantially the same as those of the above-described embodiments can be achieved. Moreover, it can be installed not only on one side and both sides of the road, but also in the median strip of the road. Also, the front and rear plate members 3 can be fixed so as to be staggered vertically. Since the wooden soundproof wall 1 in FIGS. 12 and 13 is symmetrical in front and back, the directionality is not limited, and any one surface can be installed in a desired direction.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The sound insulation plate of the present invention corresponds to the plate materials 3 and 6 and the sound insulation plate 16 of the embodiment,
The present invention is not limited to the configuration of the above-described embodiment.

  For example, the plate members 3A shown in FIG. 11 can be fixed on the front and rear surfaces of the wall frame 2 shown in FIG. 10, FIG. 12, and FIG. Further, the plate members 3 and 6 are changed to a cross-sectional shape such as a substantially semi-elliptical shape, a substantially bowl shape, a substantially arc shape, or a substantially trapezoidal shape, or a plurality of plate materials 3 and 6 having various cross-sectional shapes as described above are combined. Can also be used.

  The wooden soundproof wall of the present invention can be used as a soundproof wall for buildings such as houses and buildings.

The perspective view which shows the assembly | attachment state of the wooden soundproof wall of a 1st example. The perspective view which shows the method of filling and accommodating the carbonization sound-absorbing material in the soundproof wall. The vertical side view which shows the assembly | attachment structure of a wooden sound barrier. Longitudinal side view showing a state where carbonized sound absorbing material is filled in the soundproof wall The vertical side view which shows the state which accommodated the bag containing a carbonization sound-absorbing material in the inside of a sound-proof wall. The cross-sectional top view which shows the installation state of a wooden sound barrier. The front view which shows the installation state of a wooden sound barrier. The side view which shows the installation state of a wooden sound barrier. The cross-sectional top view which shows the 2nd example of the wooden soundproof wall which fixed the board | plate material symmetrically back and forth. The side view which shows the installation state of the wooden soundproof wall of FIG. The side view which shows the 3rd example of the wooden soundproof wall which fixed the board | plate material of a substantially cross-sectional round shape. The side view which shows the 4th example of the wooden sound-proof wall which fixed the front-and-back board material alternately. The side view which shows the 5th example of the wooden soundproof wall which fixed the board | plate material symmetrically back and forth.

Explanation of symbols

B ... Carbonized sound absorbing material Ba ... Charcoal chip Bb ... Raw chip Ca ... Sheet Cb ... Housing bag 1 ... Wooden sound barrier 2 ... Wall frame 2A ... Space part 3, 3A ... Plate material 4 ... Post 5 ... Core pillar 6 ... Plate material 7 ... Kasagi 8 ... Bottom plate 16 ... Sound insulation board

Claims (8)

A wooden soundproof wall in which a carbonized sound absorbing material in which charcoal chips obtained by carbonizing a tree and raw chips obtained by pulverizing the tree are mixed in a predetermined ratio is filled in a wooden wall frame having a substantially box shape. Filling a carbonized sound-absorbing material in which charcoal chips obtained by carbonizing a tree and raw chips obtained by pulverizing the tree are mixed at a predetermined ratio into a storage bag having air permeability,
A wooden soundproof wall in which the storage bag filled with the carbonized sound absorbing material is stored inside a wooden wall frame having a substantially box shape. The wooden soundproof wall according to claim 1 or 2, wherein at least one of the charcoal chip and the raw chip is made of thinned wood. The wooden soundproof wall according to claim 1 or 2, wherein a plurality of plate members fixed to at least one of the front and rear surfaces of the wall frame are arranged at predetermined intervals along one surface of the wall frame. The wooden soundproof wall according to claim 1 or 2, wherein a plurality of plate members fixed to the front and rear surfaces of the wall frame are arranged alternately. The wood according to claim 1 or 2, wherein the plate fixed to at least one of the front and rear surfaces of the wall frame is formed of a cross-sectional plate that reduces the reflectance of sound reflected toward the sound source side. Noise barrier. The wooden soundproof wall according to claim 1 or 2, wherein a sound insulation plate for sound insulation or reflection of a sound that attempts to pass through in a thickness direction of the wall frame is disposed on the rear surface of the wall frame or inside the wall frame. The wooden soundproof wall according to claim 1 or 2, wherein the wall frame is made of thinned cedar or birch.

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