JP2004011205A - Venting baseboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a baseboard, having a ventilation strufcture which can prevent transmission of a floor impulsive sound generated on an upstair layer to a downstair layer through an underfloor space section, and from which a vent hole or the like is not exposed on the indoor side and which displays an excellent external appearance. <P>SOLUTION: A cover member 4 is installed at the upper end section of a baseboard body 1 in which a ventilation opening 9 is formed on the rear surface side and a large number of the vent holes 3, with which the opening 9 for the venting and an indoor space section are made to communicate, are formed, the vent holes 3 are concealed by the cover member 4, and the transmission of the impulsive sound to the downstair layer is reduced by letting air in the underfloor space section D escape to an indoor space section E through the opening 9 for the venting and the vent holes 3 from an opening between the end face of a floor B and a wall surface C2 when the impulsive sound is generated on the floor B under the state in which the baseboard A is constructed on the wall surface C2. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a ventilation skirting that can buffer and block propagation of an impact sound to a lower level via an underfloor space when a floor impact occurs in a building.
[0002]
[Prior art]
Conventionally, in high-rise houses such as condominiums, a double-floor structure having an underfloor space between a floor base such as a floor slab and a floor constructed on the floor base in each floor has been provided. The underfloor space is designed to provide a sound insulation function between the upper and lower floors.However, when floor impact noise, especially heavy floor impact sound, is applied to the upper floor, the air layer in the underfloor space is affected by the shock wave. There is a problem that a so-called taiko phenomenon occurs, which is instantaneously compressed and hits the floor base, and propagates as noise to lower layers.
[0003]
For this reason, as shown in FIG. 6, a gap 21 is provided between the end surface of the floor B constructed on the floor base C1 and the wall surface C2 such as a wall slab, and the lower end of the wall surface C2 on the gap 21 is provided. A gap 22 communicating with the gap 21 is provided on the rear side of the constructed skirting board A ', and a large number of piercings are provided between the front and rear faces at predetermined intervals in the length direction at the upper end of the skirting board A'. The air hole in the underfloor space D between the floor base C1 and the floor B is provided by the air hole 23 provided between the floor base C1 and the floor B. When compressed by the impact sound, a part of the air is released from the gap 21 to the room space E through the air gap 23 provided on the rear side of the skirting board A 'from the ventilation hole 23 of the skirting board A'. , So as to block the floor impact sound. Further, instead of a skirting board provided with a vent hole 23 penetrating between the front and rear surfaces, a skirting board formed entirely of a permeable material is also employed.
[0004]
[Problems to be solved by the invention]
However, when a skirting board provided with a large number of ventilation holes 23 penetrating between the front and rear surfaces is constructed, the open ends of the ventilation holes 23 are directly exposed to the interior space E, which may impair the aesthetic appearance of the room. In addition to this, there is a problem that dust and the like enter and adhere to the ventilation holes 23 to stain the baseboard and significantly impair the appearance. Further, when the entire skirting board is formed of a porous air-permeable material, the strength of the skirting board is weakened and the appearance is not desirable. When the aesthetics of the above are harmonized, there is a problem that the air permeability is impaired by the decorative layer and the effect of cushioning the floor impact sound cannot be performed.
[0005]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a sound-insulating floor structure having an underfloor space such as a double floor and the like, while exhibiting good floor impact sound insulation performance and external appearance. The purpose is to provide an excellent ventilation skirting.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a vented skirting board according to the present invention, as described in claim 1, has a piercing board penetrating between the front and rear surfaces at an upper end portion of a skirting board body having a ventilation gap on a rear side. A cover in which air holes are provided at predetermined intervals in the horizontal direction, the rear open ends of these air holes communicate with the ventilation gap, and the front open ends are provided at the upper end of the baseboard body. It is concealed by a member, and furthermore, a structure is provided in which a ventilation port that opens downward and communicates with the outside is provided on a surface facing the cover member and the upper end of the baseboard body.
[0007]
In the ventilation skirting board configured as described above, the invention according to claim 2 is characterized in that a concave groove section having a constant vertical width and a depth, which is recessed rearward, is provided over the entire length at an upper end portion of the skirting board main body. At the same time, a ventilation hole communicating between the front and rear surfaces of the baseboard is provided at predetermined intervals in the longitudinal direction of the groove at the upper part of the vertical inner bottom surface of the groove, and further, at the upper end of the groove. A vertical protruding piece is projected upward and a vertical groove of a downward opening provided at the center of the lower end face of the cover member is fitted to the vertical protruding piece to cover the upper end mainly of the skirting board. While the member is mounted, the lower part of the front side wall plate of the cover member is projected downward from the upper end of the opening of the concave groove so as to conceal the ventilation hole, and Do not provide a vent that opens downward between the vertical bottom surface of the groove. It has a structure.
[0008]
Further, in the invention according to claim 3, the ventilation gap on the rear surface side of the main body of the skirting board makes the rear surface of the rear wall plate portion of the cover member attached to the upper end portion of the main body of the skirting board adhere to the lower end of the wall surface. A narrow gap formed between the vertical outer bottom surface and the wall surface of the concave groove portion, and a wide gap formed between the rear surface of the skirting board and the wall surface below the lower horizontal wall portion of the concave groove portion. It is characterized by the following.
[0009]
Further, the invention according to claim 4 is arranged and fixed a strip-shaped ventilation member having a large number of small ventilation holes communicating vertically in the wide gap in the ventilation gap, and fixing the rear surface of the ventilation member to a wall surface. The invention according to claim 5 is characterized in that a rubber seal member having a constant vertical width is provided at the lower end of the main body of the skirting board so as to protrude downward. It is characterized by:
[0010]
[Action]
A skirting board of the present invention is constructed along a lower end of a wall surface on a wall of a floor constructed on a floor base such as a floor slab. At this time, a gap for ventilation is provided between the end face on the side of the wall of the floor and the wall surface, and the lower end of the gap for ventilation provided on the back side of the skirting board communicates with the gap for ventilation. Leave as a wood mounting structure. In a floor structure where a skirting board is constructed in this way, when a heavy object falls on the floor surface and a floor impact noise occurs, the air layer in the space under the floor between the floor and the floor base is instantaneously caused by the shock wave. However, due to the compression, a flow of air is generated in the underfloor space toward the ventilation gap between the end surface of the floor and the wall, and a part of the air is transmitted from the ventilation gap to the baseboard body. A downwardly-opening vent provided between the facing surface of the cover member and the upper end of the skirting board through the gap between the rear surface and the wall and the vent provided in the upper end of the skirting board sequentially. And the floor impact sound can be prevented from being transmitted down to the downstairs.
[0011]
In such a skirting board mounting structure, a large number of ventilation holes provided at the upper end of the skirting board main body are concealed by the cover member provided at the upper end of the skirting board main body. It can provide a baseboard that exhibits an excellent appearance in harmony with the indoor space without being exposed, and when dust etc. adheres to the front surface and becomes dirty, it is easy to wipe off the dirt Can be.
[0012]
The large number of ventilation holes penetrating between the front and rear surfaces of the skirting board main body are provided on the upper part of the vertical inner bottom surface of the rearwardly recessed groove formed at the upper end of the skirting board main body. Thereby, the ventilation holes are arranged rearward from the vertical front surface (surface) of the skirting board body, and a vertical protruding piece is protruded from the upper end of the concave groove to cover the vertical protruding piece. If the vertical groove of the downward opening provided in the center of the lower surface of the member is fitted, a skirting board having a structure in which all the ventilation holes are easily hidden by this cover member can be formed. The front surface of the cover member and the front surface of the skirting board main body can be aligned on the same vertical plane, so that the appearance of the skirting board as one piece looks good.
[0013]
Furthermore, when the rear surface (back surface) of the cover member is abutted against the wall surface, the groove is provided at the upper end of the baseboard body, and the rear surface side of the groove is narrow between the rear surface and the wall surface. A width gap is formed, and a wide gap is formed between the rear surface of the baseboard body and the wall surface below the concave groove portion, and a strip having a large number of small air holes vertically communicated with the wide gap. By arranging and fixing the ventilation member of the above, the ventilation member is brought into contact with the wall surface together with the cover member, so that the baseboard can be firmly constructed in an accurate and stable state. The airflow can be smoothly circulated while rectifying the airflow in parallel by the large number of small holes.
[0014]
In addition, a rubber sealing member having a constant vertical width is provided at the lower end of the baseboard body so as to protrude downward, so that the lower end is always kept in close contact with the floor surface and dust and the like are kept. Can be reliably prevented from entering the gap between the skirting board and the floor, and at the time of construction of the skirting board, this seal is used together with a cover member that can be vertically adjusted with respect to the skirting board body. The mounting position of the member in the vertical direction can be adjusted, and the construction of the baseboard with high accuracy can be performed.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a specific embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a front-side oblong rectangular baseboard body made of a wooden material or a synthetic resin material and having a constant vertical width. At the upper end thereof, a concave groove portion 2 having a constant vertical width and depth (depth) which is concave toward the rear is formed horizontally over the entire length, and the groove bottom portion of the concave groove portion 2 is formed. Are provided in the upper part of the baseboard, that is, on the upper part of the vertical inner bottom surface, at the predetermined intervals in the horizontal direction, ventilation holes 3, 3, ... penetrating between the front and rear surfaces of the baseboard main body 1. A cover member 4 made of the same material as the skirting board body 1 is attached to the upper end of the skirting board body 1, and the lower end of the front side wall plate portion 4a that covers the front side of the skirting board body 1 in the cover member 4 is opened by the opening of the recessed groove section 2. All the vent holes are suspended from the upper end of the front end downward. Together they are concealed, to form a vent hole 5 which is open downward between the facing surfaces of the recessed groove portion 2 top is provided with the lower portion and the vent hole 3 of the cover member 4.
[0016]
The concave groove portion 2 is formed by bulging a portion having a certain vertical width dimension from the upper end of the skirting board main body 1 rearward over the entire length in a U-shaped cross section. The horizontal wall portion 2a is bent at a right angle rearward from the upper end portion of the skirting board main body 1 and has a width corresponding to the depth of the groove 2 from the rear surface of the skirting board 1 below the groove 2. It protrudes backward by the dimension. Furthermore, the height of the upper horizontal wall portion 2b of the concave groove portion 2, that is, the protrusion width of the wall surface portion 2b protruding forward from the vertical groove bottom surface 2c of the concave groove portion 2 is determined by the lower horizontal wall surface. The height of the portion 2a, that is, the projection width of the wall surface portion 2a protruding forward from the vertical groove bottom surface 2c of the concave groove portion 2 is formed lower (narrower). A vertical protruding piece 6 having a certain height and thickness protrudes upward from an upper surface, that is, an upper end portion of the concave groove part 2, and has a certain width from the rear end face of the upper horizontal wall part 2 a toward the rear. A projecting piece 7 is provided.
[0017]
On the other hand, the cover member 4 has a thickness in the front-rear direction after the front surface (surface) of the skirting board body 1 below the concave groove portion 2 and the horizontal protruding piece portion 7 projecting rearward from the upper end of the concave groove portion 2. A vertical bar 6 made of a square rod member having a thickness equal to the width between the end faces and projecting from the upper horizontal wall portion 2b of the concave groove portion 2 over the entire length at the center of the lower end face. A vertical groove 8 that opens downward is provided for fitting. The depth of the vertical groove 8 is formed to be deeper than the height of the vertical protruding piece 6.
[0018]
In the front wall surface portion 4a and the rear wall surface portion 4b of the cover member 4 forming the front and rear groove wall surfaces of the vertical groove groove 8, the thickness of the front wall surface portion 4a is set to the thickness of the skirting board body 1 below the concave groove portion 2. The vertical groove 8 of the cover member 4 is formed to have a thickness equal to the width between the front surface and the front end surface of the upper horizontal wall surface portion 2b of the concave groove portion 2. When the cover member 4 is mounted on the upper end portion of the baseboard body 1 by being fitted to the baseboard, the front surface of the cover member 4 is on the same vertical plane as the front surface of the baseboard body 1 below the recessed groove 2. Is formed.
[0019]
Further, a lower portion 4a 'of the front wall surface portion 4a of the cover member 4 is projected downward from an upper end of the opening front end of the concave groove portion 2, and all the ventilation holes 3 are concealed by the projecting lower portion 4a'. At the same time, the vent 5 opened downward by a gap between the rear surface of the protruding lower portion 4a 'and the bottom of the groove 2 provided with the vent 3 is formed. The lower end of the ventilation port 5 is configured to communicate with the indoor space D through the lower end of the groove 2 that opens forward.
[0020]
Further, the thickness of the rear side wall plate portion 4b of the cover member 4 is formed to be equal to the projection width of the horizontal protruding piece portion 7 protruding rearward from the upper end of the concave groove portion 2; And the rear end surface of the horizontal clothing projecting piece 7 is formed to be flush on the vertical plane, but the thickness of the rear side wall plate 4b is slightly smaller than the projecting width of the horizontal projecting piece 7. It may be thick.
[0021]
The cover member 4 is integrated with the skirting board body 1 by inserting the vertical projection 6 projecting upward from the upper end of the skirting board body 1 into the vertical groove 8 as described above. It is attached to form a skirting board A, but at the time of construction, as shown in FIG. 4, it is attached with the rear surface of the cover member 4 in close contact with the wall surface C2, In this construction state, a narrow gap 9 is formed between the vertical outer bottom surface of the concave groove portion 2 and the wall surface C2, and the rear end of the opening of all the ventilation holes 3 faces above the narrow gap 9. In addition, a wide gap 10 is formed between the concave groove 2 and the rear surface of the lower skirting board main body 1 and the wall surface C2.
[0022]
A support piece 11 is formed at the lower end of the skirting board main body 1 so as to be bent at a right angle toward the rear, and the lower end of the skirting board body 1 has a tongue-shaped cross section having a constant vertical width over the entire length. The rubber seal member 12 is protruded downward. A decorative sheet 13 such as a PVC sheet is entirely adhered to the front surface extending from the vertical protruding piece 6 to the support piece 11 of the baseboard main body 1 and the cover member 4 is also moved forward and downward from its rear upper end. The same decorative sheet 14 as described above is stuck over the end face.
[0023]
Reference numeral 15 denotes a band-shaped ventilation member made of plastic corrugated cardboard, which is substantially entirely disposed and fixed in the wide gap 10 on the rear side of the baseboard body 1, and has a large number of straight lines communicating between upper and lower end surfaces. A small ventilation hole 16 is provided, and the lower end opening of the ventilation small hole 16 communicates with the lower space of the skirting board body 1 and the upper end opening communicates with the narrow gap 9. Further, the ventilation member 15 is formed to have a thickness equal to the width between the front surface of the baseboard main body 1 and the rear surface of the cover member 4, and the rear surface is brought into close contact with the rear surface of the cover member 4 to the wall surface C <b> 2, and A is formed so that A can be fixed to the wall surface C2 in a stable state. At this time, the ventilation member 15 has its front surface fixed to the rear surface of the baseboard body with an adhesive or the like while a part of the lower end surface is supported by the support piece 11.
[0024]
The ventilation member 15 may be made of a sound absorbing material such as glass wool other than plastic cardboard, and the wide gap 10 may be passed through the wide gap 10 without disposing the ventilation member 13 in the wide gap 10. You may use as. In this case, the skirting board A is in a fixed state in which only the rear surface of the cover member 4 mounted on the upper end portion is in close contact with and supported by the wall surface C2, and some impact force acts on the front surface of the skirting board body 1. At times, there is a possibility that the skirting board body may be dented or deformed rearward. Therefore, a rib (not shown) is protruded downward at the rear end of the skirting board body 1 and the rear end face of the rib is attached to the cover member. 4 and the wall C2 together with the rear surface. When such a rib is provided in a protruding manner, it goes without saying that a ventilation portion communicating with the rib in the vertical direction is provided.
[0025]
As shown in FIGS. 3 to 5, the skirting board A configured as described above includes a floor base C1 such as a floor slab at each level of the building and a floor B constructed on the floor base C1 via a support member or the like. In the double-floor structure in which the underfloor space D is provided between the rear surface of the cover member 4 and the ventilation member 15 at the lower end of the wall C2 composed of a wall slab that defines the indoor space E of the building. It is constructed by bonding the rear surface with an adhesive or the like. At this time, the cover member 4 is attached to the vertical protrusion 6 protruding from the upper end of the concave groove 2 of the baseboard body 1 by adjusting the fitting depth of the vertical groove 8 so that the baseboard body 1 is attached. The position is set to a predetermined position, and the sealing member 12 projecting downward from the lower end of the baseboard body 1 is elastically contacted with the edge of the floor B on the side of the wall to absorb irregularities on the floor surface. I have.
[0026]
A gap 17 is provided between the end face of the floor B on the side of the wall and the wall surface C2 to communicate the underfloor space D and the indoor space E, and the skirting board A is disposed on the gap 17. The upper end of the gap 17 is made to face the gaps 9 and 10 on the rear side of the skirting board 1 through the space 18 sealed by the sealing member 12 of the skirting board 1.
[0027]
In the floor structure configured as described above, when a heavy object falls on the floor surface and a floor impact sound is generated, the shock wave compresses the air layer in the underfloor space E. At this time, a gap 17 is provided between the end surface of the floor B and the wall surface C2. The gap 17 communicates with the indoor space E through the ventilation holes 3 from the gaps 9 and 10 on the rear side of the baseboard body. Therefore, when the air layer in the underfloor space E is compressed, an airflow toward the gap 17 is generated as shown by an arrow in FIG. The upper portion of the groove 2 formed at the upper end of the main body 1 through the small holes 9 through the small holes 9 through the small holes 9 of the ventilation member 15 provided in the wide gap 10. After flowing out into the inside, the air flows down through the downward ventilation port 5 between the lower part 4a 'of the front wall surface part 4a of the cover member 4 covering the upper part of the concave groove part 2 and the upper end part of the concave groove part 2. Through the lower end of the groove 2 opening from the lower end of the mouth 5 toward the interior space E, the indoor side It flows out into the space E.
[0028]
In this way, when the impact sound is generated on the floor, a part of the air in the underfloor space E escapes to the indoor side space E, so that the compression of the underfloor air layer is reduced and the floor impact sound is transmitted downstairs. Can be blocked.
[0029]
The shape of the large number of ventilation holes 3 provided above the concave groove portion 2 for allowing air to flow from the rear surface side to the front surface side of the baseboard body 1 may be any shape such as a circle, an ellipse, and a square hole. However, it is necessary that the cover member 4 be concealed by the lower portion of the front side wall plate portion 4a. In addition, in order to allow air to flow out with little resistance, it is desirable that the opening ratio of all the ventilation holes 3 be 30% or more of the area of the upper part of the concave groove 2.
[0030]
【The invention's effect】
As described above, according to the ventilation skirting board of the present invention, as described in claim 1, the ventilation hole penetrating between the front and rear surfaces at the upper end portion of the skirting board body having the ventilation gap on the rear side. Are provided at predetermined intervals in the horizontal direction, the rear opening ends of these ventilation holes communicate with the ventilation gaps, and the front opening ends are provided at the upper end of the baseboard body. Further, since a structure is provided in which a ventilation hole which opens downward and communicates with the outside is provided on a surface facing the cover member and the upper end portion of the skirting board body, this ventilation skirting board is When installed along the lower edge of the wall above the floor of the floor above the floor base, etc., a number of ventilation holes provided at the upper end of the baseboard are provided at the upper end of the baseboard. And is completely exposed to the indoor side Therefore, it is possible to provide a baseboard having an excellent appearance in harmony with the indoor space without giving a sense of incongruity, and to prevent dust and the like from entering and adhering to the ventilation holes from the indoor space side. Can be prevented by the cover member to provide a clean baseboard mounting structure.
[0031]
Furthermore, by constructing the baseboard at the lower end portion of the wall surface in a state where the ventilation gap portion provided between the end surface of the floor near the wall and the wall surface is connected to the ventilation gap of the back side thereof, Even if a heavy object falls on the surface and the floor impact noise is generated, the air in the underfloor space is removed from the ventilation gap through the gap between the rear surface of the baseboard and the wall and the upper end of the baseboard. Can smoothly flow through the ventilation holes provided in the interior space through the downwardly-opening ventilation holes provided between the facing surface of the cover member and the upper end of the baseboard body. The sound can be prevented from being transmitted downstairs.
[0032]
Further, according to the second aspect of the present invention, the plurality of ventilation holes penetrating between the front and rear surfaces of the skirting board main body are recessed rearwardly formed at the upper end portion of the skirting board main body. It is provided at the upper part of the vertical inner bottom surface of the groove having a vertical width and depth, and is formed at the center of the lower end surface of the cover member at the vertical protruding piece projecting at the upper end of the groove. A cover member is attached to the upper end of the baseboard by fitting the vertical groove of the downward opening, and the lower part of the front wall plate portion of the cover member is projected downward from the upper end of the opening of the concave groove. Therefore, a large number of ventilation holes provided in the upper portion of the concave groove portion can be securely hidden by the projecting lower portion of the cover member so as to be completely invisible from the indoor side. Open the specified gap between the groove and the vertical bottom surface. It is possible to form a vent which is opened downward with a width, it is possible to circulate air in the indoor space through the lower portion of the groove portion in the lower of the vent.
[0033]
In addition, by adjusting the fitting depth of the vertical groove of the cover member to the vertical protruding portion protruding upward from the upper end of the baseboard main body, the vertical width and height of the baseboard can be simplified. And the front of the cover member and the front of the skirting board main body can be aligned on the same vertical plane, so that the skirting board has the appearance of a single-piece skirting board with a good appearance. Can be.
[0034]
In addition, the ventilation gap on the rear side of the main body of the skirting board is, as described in claim 3, the back surface of the rear side wall plate portion of the cover member attached to the upper end of the main body of the skirting board, and A narrow gap formed between the vertical outer bottom surface and the wall surface of the concave groove when closely contacted with the groove, and a wide gap formed between the rear surface of the baseboard and the wall surface below the lower horizontal wall surface portion of the concave groove portion Since the cover member is in close contact with and fixed to the skirting surface, a ventilation gap having a predetermined width can be formed, and the wide gap has a large number of small ventilation holes communicating vertically. By arranging and fixing a strip-shaped ventilation member and abutting the ventilation member together with the cover member on the wall surface, the skirting board can be firmly constructed in an accurate and stable state. A large number of ventilation holes in the ventilation member direct air flow in parallel Reluctant smoothly can be circulated, it can be employed as a means of ventilation of the building using the underfloor space.
[0035]
Further, according to the invention of claim 6, since a rubber seal member having a constant vertical width is protruded downward from the lower end of the skirting board main body, the lower end of this seal member is always on the floor. It is possible to prevent dust and the like from entering the gap between the baseboard and the floor by maintaining the state of being in close contact with the surface, absorb the unevenness of the floor surface, and furthermore, At the time of construction of a tree, a vertically adjustable mounting position of the seal member can be adjusted together with a cover member capable of adjusting the position of the seal member in the vertical direction with respect to the skirting board body, thereby enabling accurate construction of the skirting board. It is.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of a ventilation skirting of the present invention,
FIG. 2 is an exploded perspective view of a part thereof from the back side,
FIG. 3 is a perspective view showing a cross section of a part of a floor structure on which a ventilation skirting is constructed.
FIG. 4 is a vertical sectional side view showing the ventilation structure.
FIG. 5 is a perspective view showing a skirting board construction state viewed from the floor side;
FIG. 6 is a simplified vertical side view showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Baseboard body 2 Concave groove part 3 Vent hole 4 Cover member 5 Vent hole 6 Vertical protruding piece part 8 Vertical groove 9 Narrow gap 10 Wide gap 12 Seal member 15 Vent member A Baseboard B Floor C1 Floor base C2 Wall D Floor under floor Space E Room space

Claims (5)

Vent holes penetrating between the front and rear surfaces are provided at predetermined intervals in the horizontal direction at the upper end portion of the skirting board body having a ventilation gap on the rear side, and the rear side open ends of these ventilation holes are ventilated as described above. The opening end on the front side is concealed by a cover member provided at the upper end of the skirting board main body. A ventilation skirting having a ventilation opening that opens downward and communicates with the outside. At the upper end of the skirting board, a concave groove having a certain vertical width and depth, which is depressed rearward, is provided over the entire length, and the concave groove is provided at the upper part of the vertical inner bottom surface of the concave groove. A ventilation hole communicating between the front and rear surfaces of the baseboard is provided at predetermined intervals in the length direction of the skirting board, and further, a vertical protruding part is formed by projecting upward at the upper end of the groove. The cover member is attached to the upper end portion of the baseboard mainly by fitting the vertical groove of the downward opening provided at the center of the lower end surface of the cover member to the lower portion of the front side wall plate portion of the cover member. Is projected downward from the upper end of the opening of the groove to cover the ventilation hole, and the ventilation opening opened downward between the lower part of the front side wall plate and the vertical inner bottom surface of the groove. The ventilation skirting board according to claim 1, which is provided. The ventilation gap on the back side of the skirting board is formed with the vertical outer bottom surface of the groove when the back surface of the rear wall plate of the cover member attached to the upper end of the skirting board is in close contact with the lower end of the wall. The narrow gap formed between the wall surfaces, and the wide gap formed between the rear surface of the main part of the skirting board and the wall surface below the lower horizontal wall surface portion of the concave groove portion. 3. The ventilation skirting according to 2. In the wide gap, a strip-shaped ventilation member having a large number of small ventilation holes communicated in the vertical direction is arranged and fixed, and the rear surface of the ventilation member is configured to contact the wall surface. The ventilation skirting according to claim 1, claim 2, or claim 3. 3. The ventilation skirting according to claim 1, wherein a rubber sealing member having a constant vertical width is provided to project downward from a lower end of the skirting main body.

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