JP2000225322A - Wall structure for removing air pollutant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply attach a wall surface structure retaining a photocatalytic sheet on a frame, a bracket attached to a pillar on a road and another bracket for fitting the frame on the former bracket, on an existing installation to certainly remove air pollutants and at the same time, facilitate replacement of a photocatalyst by providing the wall surface structure, the bracket and the other bracket. SOLUTION: A fixture 4 consisting of plural brackets 9, 14 is fitted to an existing pillar 2 supporting a sound barrier 8 and a wall face structure 1 is also fitted to the pillar 2 through plural fitting bolts 13, 19, and further, a photocatalytic sheet 7 bearing a photocatalyst is installed. When a solar light is emitted to this photocatalytic sheet 7, air pollutants contained in the air are removed coming into contact with the photocatalyst. When the photocatalytic sheet 7 is qualitatively deteriorated, the wall face structure 1 can be removed without the removal of the sound barrier 8 supported on the pillar 2 by demounting both brackets 9, 14. In addition, it is possible to certainly remove the air pollutants by providing a wire meshlike retainer member 6 for supporting the photocatalytic sheet 7 on the frame 5 of the wall face structure 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall structure for removing air pollutants attached to a support of a road.

[0002]

2. Description of the Related Art Conventionally, as shown in, for example, Japanese Patent Application Laid-Open No. 9-173776, a sound absorber made of a porous material supporting titanium dioxide is provided, and the sound absorber is irradiated with light. By doing so, the noise caused by the running of the vehicle or the like is reduced by the sound absorber, and the air pollutant composed of nitrogen oxides contained in the exhaust gas is oxidized and removed by contacting the titanium dioxide. Known sound absorber structures are known. That is, the nitrogen oxides in the air are changed to nitric acid by a photocatalytic reaction caused by irradiating light to a photocatalyst made of titanium dioxide supported by being deposited on a porous material constituting the sound absorber, and removed. That is being done.

[0003]

As described above, by supporting a photocatalyst made of titanium dioxide on a sound absorber made of a porous material as described above, the above-mentioned air pollutant removing effect and sound absorbing effect can be obtained simultaneously. In this case, if the photocatalyst deteriorates with time and the effect of removing air pollutants decreases, the sound absorber itself needs to be replaced, which is uneconomical. Further, in order for the existing soundproof wall made of the porous body or the like to have a function of removing contaminants, the soundproof wall must be replaced with a sound absorber supporting the photocatalyst, and this operation is complicated. There was a problem that is.

In view of such circumstances, the present invention can provide a function of removing air pollutants by simply installing the photocatalyst in an existing facility, and can easily replace the photocatalyst when it has deteriorated. The present invention provides an air pollutant removal wall structure that can be used.

[0005]

The invention according to claim 1 is
A wall structure in which a photocatalyst sheet carrying a photocatalyst is held by a frame, a first bracket fixed to a column erected on a road, and the frame being detachably attached to the first bracket. And a second bracket to be attached.

[0006] According to the above configuration, for example, the second bracket is fixed to the first bracket fixed to the existing column standing on the road.
By attaching the frame of the wall structure via the bracket, air pollutants such as nitrogen oxides trapped in the photocatalyst sheet of the wall structure are effectively removed in an oxidized state. . When the photocatalyst sheet has deteriorated, the photocatalyst sheet held by the frame of the wall structure can be easily replaced by removing the second bracket from the first bracket.

According to a second aspect of the present invention, in the air contaminant removal wall structure according to the first aspect, a wire mesh holding member for supporting a photocatalyst sheet is provided on the frame.

According to the above configuration, the photocatalyst sheet is stably held by the frame in a state where the photocatalyst sheet is supported by the wire mesh pressing member.

According to a third aspect of the present invention, in the wall structure for removing air pollutants according to the first or second aspect,
The first bracket is provided with a mounting hole formed of a long hole extending in a direction orthogonal to the installation surface of the wall structure, and the second bracket is detachably mounted in the mounting hole.

[0010] According to the above configuration, the first bracket is provided within the installation range of the mounting hole formed of the elongated hole provided in the first bracket.
By changing the attachment position of the second bracket with respect to the bracket, the installation position of the wall structure is adjusted in a direction orthogonal to the installation surface.

According to a fourth aspect of the invention, in the wall structure for removing an air pollutant according to any one of the first to third aspects, the second bracket is provided along the installation surface of the wall structure. A mounting hole extending in the direction is provided, and the wall structure is detachably mounted in the mounting hole.

[0012] According to the above configuration, the second bracket is provided within the installation range of the mounting hole composed of the elongated hole provided in the second bracket.
By changing the attachment position of the wall structure to the bracket, the installation position of the wall structure is adjusted in a direction along the installation surface.

According to a fifth aspect of the present invention, in the air contaminant removal wall structure according to any one of the first to fourth aspects, the wall structure is attached to a support supporting a soundproof wall of a road. The wall structure is installed inside the soundproof wall (on the side of the road) at a predetermined interval.

According to the above configuration, the wall structure can be easily attached to the inside of the existing soundproof wall via the bracket.

According to a sixth aspect of the present invention, there is provided an air contaminant removing wall structure according to any one of the first to fifth aspects, wherein an upper cover for covering an upper end of the column is provided, and the upper cover is provided. Provided with a photocatalyst sheet carrying a photocatalyst.

According to the above configuration, air pollutants such as nitrogen oxides trapped in the photocatalyst sheet provided on the upper cover are effectively removed in an oxidized state.

According to a seventh aspect of the present invention, there is provided a wall structure having a photocatalyst sheet carrying a photocatalyst held on a frame,
A mounting bracket that detachably attaches the wall structure to a pillar for a guardrail erected on the road side,
The mounting bracket includes a holding portion that is detachably attached to the mounting bracket while holding the column, and an attachment portion of the frame protruding from the holding portion.

According to the above construction, the frame of the wall structure is attached to the mounting portion of the mounting bracket fixed to the existing guard rail support standing upright on the road side, so that the photocatalyst of this wall structure is provided. Air contaminants such as nitrogen oxides captured on the sheet are effectively removed in an oxidized state.

[0019] The invention according to claim 8 is an antiglare plate formed by providing a photocatalyst sheet carrying a photocatalyst with a light blocking function, a holding member for holding the antiglare plate, and a glare provided on a road. And a fixture for detachably attaching the frame to the support portion of the prevention plate.

According to the above configuration, glare caused by the headlights of the vehicle or the like is provided by the glare prevention plate attached to the support portion provided upright on the road side portion or the median strip through the holding member and the fixture. While being effectively prevented, air pollutants such as nitrogen oxides captured by the glare prevention plate are effectively removed by contacting the photocatalyst.

[0021]

FIG. 1 shows an embodiment of an air pollutant removal wall structure according to the present invention. The removal wall structure includes a wall structure 1 in which a photocatalyst sheet carrying a photocatalyst is held by a frame, as described later, and an upper cover 3 that covers an upper end of a column 2 erected on a road. At the corner portion of the wall structure 1, a mounting member 4 for detachably attaching the wall structure 1 to the column 2 is provided.

As shown in FIGS. 2 and 3, the wall structure 1 has a pair of front and back frame members 5 made of a combination of a vertically extending plate member and a horizontally extending plate member, and an inner surface of the frame member 5. Wire-like holding member 6 attached to the side, and a photocatalyst sheet 7 whose front and back surfaces are sandwiched by the holding member 6
And is constituted by.

The photocatalyst sheet 7 is provided with a photocatalyst which undergoes a photocatalytic reaction upon receiving light energy, for example, a metal compound semiconductor such as titanium oxide, zinc oxide, tungsten oxide, iron oxide or strontium titanate, which is passed through glass wool or rock wool. It is made of a porous sheet material which is supported by a sheet material having a property by a spray method or a vacuum evaporation method.

The support column 2 is made of H-shaped steel for supporting the soundproof wall 8, and a first bracket 9 constituting the mounting member 4 is fixed to a wall surface on the roadway side by means such as welding or bolting. I have. As shown in FIGS. 3 and 4, the first bracket 9 includes a mounting portion 10 that is mounted on the wall surface of the column 2, and a standing portion that extends from the mounting portion 10 in a direction perpendicular to the installation surface of the wall structure 1. 11 are formed by an L-shaped member. At the upright portion 11 of the first bracket 9, a mounting hole 12 formed of a long hole extending in the length direction is formed, and the second bracket 14 can be mounted by the mounting bolt 13 passing through the mounting hole 12. ing.

As shown in FIG. 5, the second bracket 14 has a mounting portion 15 that is mounted on the wall of the wall structure 1 on the roadway side, and an upright portion 16 that extends in a direction perpendicular to the mounting portion 15. It is made of an L-shaped member. The upright portion 16 of the second bracket 14 is provided with a bolt hole 17 through which the mounting bolt 13 is inserted. Further, the mounting portion 15 is provided with a mounting hole 18 formed of a long hole extending in a direction along the installation surface of the wall structure 1, and the wall structure 1 is fixed by a mounting bolt 19 inserted through the mounting hole 18. With the position adjusted, it is configured to be detachably attached (see FIG. 3).

The upper cover 3 is, as shown in FIG.
Similar to the wall structure 1, a pair of front and back holding walls each having a frame made of a combination of a plate extending in the vertical direction and a plate extending in the horizontal direction, and a wire mesh holding member attached to the inner surface side of the frame. 20 and 21 and a photocatalyst sheet 22 sandwiched between the front and back surfaces by the holding walls 20 and 21. The upper cover 3 is formed in a hollow shape having a spherical head and a pair of front and rear legs,
A mounting bracket 23 that is detachably mounted to the upper end of the column 2 via a mounting bolt (not shown) is fixed to the leg.

In the above configuration, the wall structure 1 is attached to the existing support 2 supporting the soundproof wall 8 via the mounting fixture 4 including the first bracket 9 and the second bracket 14 and the mounting bolts 13 and 19. By attaching the photocatalyst sheet 7, the photocatalyst sheet 7 carrying the photocatalyst is installed on the road side of the soundproof wall 8 at a predetermined interval from the soundproof wall 8.
When the photocatalyst sheet 7 is irradiated with sunlight, the air pollutants in the air come into contact with the photocatalyst, whereby the air pollutants are removed. For example, the nitrogen oxide component contained in the exhaust gas of the vehicle is oxidized by a photocatalytic reaction to be converted to nitric acid, and then collected on the photocatalyst sheet 7, and the nitric acid is washed out and removed with water during rainfall. Can be.

The photocatalyst sheet 7 is formed of a porous sheet having air permeability, and is provided at a predetermined interval from the soundproof wall 8. The airflow flowing to the back side can be formed smoothly. Therefore, the air pollutant can be actively collected by the photocatalyst sheet 7, and an excellent purification function can be obtained.

When the photocatalyst sheet 7 has deteriorated, the second bracket 14 is removed from the first bracket 9 or the second bracket 1 is removed from the wall structure 1.
Since the wall structure 1 can be removed without removing the soundproof wall 8 supported by the support column 2 by removing the support 4, the photocatalyst carried on the photocatalyst sheet 7 can be activated, or the photocatalyst sheet can be activated. 7 can be easily replaced with a new one.

In the above embodiment, the frame 5 of the wall structure 1
Since the metal mesh-shaped holding member 6 for supporting the photocatalyst sheet 7 is provided, the frame member 5 is stably held in a state where the photocatalyst sheet 7 is sandwiched by the holding member 6 without lowering the air permeability of the wall structure 1. The air pollutant can be reliably contacted with the photocatalyst of the photocatalyst sheet 7 and oxidized effectively.

In the above embodiment, the photocatalyst sheet 7
Has been described in which the front and back surfaces of the photocatalyst sheet 7 are held by the holding member 6. However, if one surface of the photocatalyst sheet 7 can be supported by the frame 5, the above-mentioned press only on the other side of the photocatalyst sheet 7. The structure in which the member 6 is provided may be adopted.
In this case, there is an advantage that the exposed area of the surface of the photocatalyst sheet 7 is increased, and the function of removing air pollutants can be further improved.

Further, as shown in the above embodiment, the first bracket 9 constituting the mounting fixture 4 is provided with a mounting hole 12 consisting of a long hole extending in a direction perpendicular to the installation surface of the wall structure 1. When the second bracket 14 is configured to be detachably attached to the hole 12, the attachment position of the second bracket 14 with respect to the first bracket 9 is arbitrarily changed within the installation range of the attachment hole 12 formed of the elongated hole. Can be done. Therefore, by changing the installation position of the wall structure 1 in a direction orthogonal to the installation surface, the distance between the wall structure 1 and the soundproof wall 8 is appropriately adjusted, for example, on the front and back of the photocatalyst sheet 7. The interval can be adjusted in consideration of the state of the air flow, the state of the installation place, and the like.

Further, in the above embodiment, the second bracket 14 constituting the mounting fixture 4 is provided with the mounting hole 18 extending in the direction along the installation surface of the wall structure 1.
Since the wall structure 1 is configured to be detachably mounted on the second bracket 14, the mounting position of the wall structure 1 with respect to the second bracket 14 can be arbitrarily changed within the installation range of the mounting hole 18 formed of the elongated hole. Therefore, by adjusting the installation position of the wall structure 1 in a direction along the installation surface, the dimensions of the wall structure 1 and
Even if there are some manufacturing errors between the installation intervals of the columns 2, the wall structures 1 can be attached to the columns 2 by absorbing the errors.

In the above embodiment, since the upper cover 3 is provided at the upper end of the column 2 and the photocatalyst sheet 22 carrying the photocatalyst is provided on the upper cover 3, the nitrogen oxide supplemented by the photocatalyst sheet 22 is provided. Air pollutants such as substances can be effectively removed in an oxidized state. When the upper cover 3 is formed in a hollow shape as described above, the soundproofing effect can be effectively improved by using the internal space of the upper cover 3 as a noise absorbing chamber.

The specific structure of the first bracket 9 and the second bracket 14 and the like is not limited to the above embodiment, and various changes can be made. For example, as shown in FIG. The first bracket 9 may be configured by a U-shaped member having the mounting portion 11 of the first embodiment.

In the above embodiment, the example in which the wall structure 1 is attached to the column 2 made of H-shaped steel that supports the soundproof wall 8 has been described. However, as shown in FIG. 7, the wall structure 1 is erected on the road side. A mounting bracket 26 attached to a support 25 made of a round pipe material or the like that supports the guardrail 24 includes:
The wall structure 1 may be configured to be detachably attached. As shown in FIG. 8, the mounting bracket 26 has a holding portion 27 that is detachably attached while holding the support 25, and an attachment portion 28 protruding from the holding portion 27. ing.

The holding portion 27 is composed of a pair of left and right holding pieces 30 and 31 connected to be openable and closable by hinges 29. It is configured to be attached in a state where it is sandwiched. The frame 5 of the wall structure 1 is mounted on the mounting portion 28 of the mounting bracket 26.
The second bracket 14 attached to the
The frame 5 of the wall structure 1 is detachably attached directly.

Although FIG. 7 shows an example in which the wall structure 1 is mounted on the guard rail 24 erected on the roadside, the wall structure 1 is mounted on the guard rail erected on the median strip. May be configured.

As shown in FIGS. 9 and 10, the antiglare plate 31 formed by providing the photocatalyst sheet carrying the photocatalyst with a light blocking function is held by the holding member 32, and the photocatalyst sheet stands on the road side. It may be configured to be attached to a support portion including the support pillar 25 for the guardrail 24 provided by the attachment 33 and to remove the air pollutant by the glare prevention plate 31.

That is, the glare prevention plate 31 is formed of a porous sheet material formed in a mesh shape or the like by supporting a photocatalyst such as titanium oxide on a gas-permeable sheet material such as glass wool or rock wool. It has a function of blocking light emitted from a vehicle headlight or the like and a function of capturing and oxidizing and removing air pollutants such as nitrogen oxides.

The holding member 32 has, for example, a frame made of a combination of a plate extending in the vertical direction and a plate extending in the horizontal direction, and a wire mesh holding member attached to the inner side of the frame. It has a pair of front and back holding walls 34 and support legs 35 projecting downward from the holding walls 34, and is configured to hold and hold the glare preventing plate 31 from the front and back by the holding walls 34. .

The mounting member 33 comprises a pair of upper and lower mounting brackets 37 and 38 which are mounted by mounting bolts 36 while holding the support 25 for the guard rail 24. The mounting brackets 37 and 38
The two support legs 35 are detachably mounted by mounting bolts 39.

In the case where the anti-glare plate 31 is mounted on the support portion composed of the support 25 for the guardrail 24 erected on the road side portion via the holding member 32 and the mounting member 33 as described above. The anti-glare plate 31 blocks the light emitted from the headlights or the like of the vehicle, thereby providing an anti-glare effect. At the same time, the air pollutants such as nitrogen oxides captured by the anti-glare plate 31 are brought into contact with the photocatalyst. In the oxidized state, it can be effectively removed.

As shown in FIG. 11, the glare preventing plate 3
One holding member 32 is provided with a pair of left and right support legs 35, and both support legs 35 are attached to a support column 25 for the guardrail 24 by a mounting member 33 including a pair of upper and lower mounting brackets 37 and 38.
It may be configured to be removably attached to the camera.

In the case of the above construction, the anti-glare plate 31 is mounted on the support 25 or the like provided upright at the median strip of the road.
Can be attached stably, and the adverse effect on the oncoming vehicle due to the light emitted from the headlights of the vehicle,
The glare prevention plate 31 can effectively suppress the glare. In addition, the mounting bracket 3 for the support 25
By adjusting the mounting angles of 7, 38, there is an advantage that the installation angle of the glare plate can be easily and appropriately set so that glare to oncoming vehicles can be effectively prevented.

As shown in FIGS. 12 and 13, a mounting comprising a pair of upper and lower mounting brackets 40 mounted on the holding member 32 of the glare prevention plate 31 and a U bolt 41 fixed to the mounting bracket 40. The holding member 32 of the glare prevention plate 31 may be configured to be detachably attached to the guard cable 43 installed on the road side or the like by the tool 42.

Further, as shown in FIG.
Alternatively, a dazzling prevention plate 3 is attached to a fixture consisting of a mounting bracket 46 fixed to a railing or the like by an anchor bolt 45 or the like.
The support leg 35 provided on one holding member 32 may be configured to be detachably attached.

[0048]

As described above, the present invention relates to a wall structure having a photocatalyst sheet carrying a photocatalyst held by a frame, and a first bracket fixed to a column erected on a road. Since the second bracket for detachably attaching the frame body to the first bracket is provided, the first bracket fixed to the existing support standing upright on the road is provided with the wall surface via the second bracket. By attaching the frame of the structure, air pollutants such as nitrogen oxides trapped in the photocatalyst sheet of the wall structure can be effectively removed in an oxidized state. Further, when the photocatalyst sheet is deteriorated, by removing the wall structure from the support, the photocatalyst carried on the photocatalyst sheet can be activated, or the photocatalyst sheet can be easily replaced with a new one. There is the advantage that it can be done.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of an air pollutant removal wall structure according to the present invention.

FIG. 2 is a front view showing a specific structure of the wall structure.

FIG. 3 is a plan view showing a specific structure of the wall structure.

FIG. 4 is an explanatory diagram showing a configuration of an upper cover.

FIG. 5 is a perspective view showing a specific structure of a second bracket.

FIG. 6 is a plan view showing another example of the first bracket.

FIG. 7 is an explanatory diagram showing another installation example of the wall structure.

FIG. 8 is a plan view showing a specific configuration of a fixture.

FIG. 9 is an explanatory view showing another embodiment of the air pollutant removal wall structure according to the present invention.

FIG. 10 is a plan sectional view showing a configuration of a mounting portion of the air contaminant removing wall structure.

FIG. 11 is an explanatory view showing still another embodiment of the air pollutant removal wall structure according to the present invention.

FIG. 12 is an explanatory view showing still another embodiment of the air pollutant removal wall structure according to the present invention.

FIG. 13 is a perspective view showing a configuration of a mounting portion of the wall structure for removing air pollutants.

FIG. 14 is an explanatory view showing still another embodiment of the air pollutant removal wall structure according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wall structure 2 Prop 3 Upper cover 5 Frame 6 Holding member 7,22 Photocatalyst sheet 8 Soundproof wall 9 First bracket 12 First bracket mounting hole 14 Second bracket 18 Second bracket mounting hole 24 Guard rail 25 For guard rail Support 26 mounting bracket 27 holding part 28 mounting part 31 glare prevention plate 32 holding member 33, 42 mounting tool 43 guard cable (supporting part) 44 road wall part (supporting part) 46 mounting bracket (mounting tool)

Claims (8)

[Claims] 1. A wall structure in which a photocatalyst sheet carrying a photocatalyst is held by a frame, a first bracket fixed to a support standing upright on a road, and the frame with respect to the first bracket. A wall structure for removing air pollutants, comprising: a second bracket for detachably attaching a body. 2. The air pollutant removal wall structure according to claim 1, wherein a wire mesh holding member for supporting the photocatalyst sheet is provided on the frame. 3. The wall structure for removing air pollutants according to claim 1 or 2, wherein the first bracket is provided with a mounting hole made of a long hole extending in a direction perpendicular to the installation surface of the wall structure. An air pollutant removal wall structure, wherein a second bracket is detachably attached to the attachment hole. 4. The air pollutant removal wall structure according to claim 1, wherein the second bracket is provided with a mounting hole extending in a direction along an installation surface of the wall structure. A wall structure for removing air pollutants, wherein a wall structure is detachably attached to the attachment hole. 5. The air pollutant removal wall structure according to claim 1, wherein the wall structure is attached to a support for supporting a soundproof wall of a road, and the wall structure is A wall structure for removing air pollutants, wherein said wall structure is provided at a predetermined interval inside said soundproof wall. 6. The photocatalyst according to claim 1, further comprising an upper cover that covers an upper end of the column, and a photocatalyst carried on the upper cover. An air pollutant removal wall structure comprising a sheet. 7. A wall structure in which a photocatalyst sheet carrying a photocatalyst is held by a frame, and a mounting bracket which detachably attaches the wall structure to a guardrail support provided on a road side. Air provided with a holding portion detachably attached to the mounting bracket while holding the support column, and an attachment portion for the frame protruding from the holding portion. Pollutant removal wall structure. 8. A glare preventing plate formed by giving a light blocking function to a photocatalyst sheet carrying a photocatalyst, a holding member for holding the glare preventing plate, and a supporting portion of the glare preventing plate provided on a road. And a fixture for detachably attaching the holding member.