JP2004116927A - Ventilating opening - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a practical ventilating opening exhibiting satisfactory ventilating property with an extremely high effect of preventing penetration of noise in doors. <P>SOLUTION: This ventilating opening (a) is constituted so as to be attached to a pipe member 1 having ventilating function. The ventilating opening (a) comprises a cylindrical part 2 continued to the pipe member 1 and a ventilation part 3 continued to the front side of the cylindrical part 2, and a sound absorbing body 5 is provided in an air passing space part 4 within the ventilation part 3 with a prescribed space from the inner wall of the ventilation part 3. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vent having a function of absorbing outdoor noise.
[0002]
Problems to be solved by the prior art and the invention
A ventilation port attached to a pipe (duct) provided on a wall generally includes a cylindrical portion fitted into the pipe and a cylindrical ventilation portion connected to the front side of the cylindrical portion. The air exhausted outside reaches the ventilation opening of the ventilation section from the pipe via the space in the cylindrical section and the space in the ventilation section, and is discharged to the outside (for example, according to the prior application of the applicant). Japanese Patent No. 3285557).
[0003]
By the way, in this ventilation port, there is a problem that outdoor noise enters through the ventilation introduction opening and reaches indoors via the space in the ventilation part, the space in the cylindrical part, and the pipe.
[0004]
Therefore, in order to prevent the noise from entering the room, a method of attaching a sound absorbing material such as urethane foam to the inner wall of the ventilation section has been proposed. However, this method has an effect of preventing the noise from entering the room. Is inadequate.
[0005]
Specifically, in the case of a configuration in which a sound absorbing material is provided on the inner wall of the ventilation unit, noise that has entered the ventilation space of the ventilation unit from the ventilation introduction opening of the ventilation unit is transmitted to the inner wall (sound absorbing material) of the ventilation unit. The sound enters the tube side while being reflected. At this time, every time the noise is reflected by the sound absorbing material, the noise is gradually absorbed by the sound absorbing material and attenuated. Therefore, the greater the number of times the noise is reflected, the more the noise is absorbed and attenuated.
[0006]
In the case of this configuration, the number of times that noise is reflected is greatly affected by the length of the portion where the sound absorbing material is provided and the distance between the sound absorbing materials disposed opposite to each other in the ventilation space. That is, if the length of the portion where the sound absorbing material is provided is long, the number of times that noise is reflected when passing through the portion increases. In addition, if the distance between the sound absorbing materials disposed opposite to each other is short, the noise reflected at a certain point immediately comes into contact with the sound absorbing material on the opposite side and is reflected, and the distance traveled by the noise due to the reflection is reduced. Therefore, the number of reflections increases.
[0007]
However, there is a limit to lengthening the ventilation part in order to lengthen the portion where the sound absorbing material is provided. In addition, when the ventilation space is made narrow to shorten the distance between the sound absorbing materials, the air permeability, which is an important characteristic of the ventilation port, is deteriorated.
[0008]
The present invention solves the above-mentioned problems, and provides a highly practical ventilation port that has an extremely high effect of preventing noise from entering indoors and yet exhibits good air permeability.
[0009]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0010]
A ventilation port a attached to the pipe material 1 having a ventilation function, the ventilation port a comprising a cylindrical portion 2 connected to the pipe material 1 and a ventilation portion 3 connected to the front side of the cylindrical portion 2. The sound-absorbing body 5 is provided in the ventilation space part 4 in the ventilation part 3 at a predetermined interval from the inner wall of the ventilation part 3.
[0011]
Further, in the ventilation port according to the first aspect, a sound absorbing material 6 is provided on an inner wall of the ventilation section 3 at a predetermined interval from the sound absorbing body 5.
[0012]
Further, in the ventilation opening according to any one of claims 1 and 2, the ventilation part 3 is provided with an opening member 8 attached to the ventilation introduction opening 7 of the ventilation space part 4, and the opening member 8 absorbs sound. The present invention relates to a ventilation port characterized in that the body 5 is provided continuously.
[0013]
The ventilation port (a) according to any one of claims 1 to 3, wherein the ventilation port (a) has a configuration in which a cylindrical ventilation section (3) is connected to the cylinder section (2), and further has a shaft. The vent hole is configured such that the core and the axis of the ventilating section 3 are orthogonal to each other, and the ventilating opening 7 of the ventilating space section 4 is provided below the ventilating section 3. is there.
[0014]
Function and effect of the present invention
Since the sound absorber 5 is provided in the ventilation space part 4 of the ventilation part 3 at a predetermined distance from the inner wall of the ventilation part 3, the noise reflected on the inner wall of the ventilation part 3 moves only a short distance. , And is reflected by the sound absorbing body 5.
[0015]
Accordingly, the distance traveled by the reflection of the noise is shortened, and the number of times the noise is reflected by the sound absorbing body 5, that is, the number of times the sound is absorbed, is increased, and an excellent noise prevention effect is exhibited.
[0016]
Furthermore, even if the cross-sectional area of the ventilation space portion 4 is large, the noise reflection distance can be shortened by the presence of the sound absorbing body 5, so that the good air permeability originally required for the ventilation port a is also maintained. .
[0017]
Since the present invention is configured as described above, it has an extremely high effect of preventing the intrusion of noise into the room, and is a highly practical ventilation port that exhibits good air permeability.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
The drawings illustrate one embodiment of the present invention and will be described below.
[0019]
The present embodiment is a ventilation port a attached to a pipe material 1 having a ventilation function, and the ventilation port a is connected to a tubular portion 2 connected to the pipe material 1 and to a front side of the tubular portion 2. The ventilation space 3 in the ventilation unit 3 is provided with a sound absorber 5 at a predetermined interval from the inner wall of the ventilation unit 3.
[0020]
A sound absorbing material 6 is provided on the inner wall of the ventilation section 3 at a predetermined interval from the sound absorbing body 5.
[0021]
Further, a cylindrical tubular portion 2 is employed as the tubular portion 2.
[0022]
In addition, a cylindrical ventilation part 3 is connected to the cylinder part 2, and the axis of the cylinder part 2 and the axis of the ventilation part 3 are orthogonal to each other. Is provided with a ventilation introduction opening 7 of the ventilation space 4 at the lower part of the space.
[0023]
Although the cylindrical ventilation part 3 is adopted as the ventilation part 3, the shape of this ventilation part 3 is appropriately set by design. Further, it is preferable that the ventilation unit 3 be as long as possible.
[0024]
The tube portion 2 and the ventilation portion 3 are connected to each other via a contact tube portion 10 that comes into contact with a wall 9 on which the tube 1 is provided. Therefore, even if the ventilation part 3 has any shape, the ventilation part 3 and the cylindrical part 2 can be connected. In addition, by forming the contact cylinder portion 10 to be inclined obliquely downward, the ventilation port a can be attached to the pipe 1 with good stability even in a place where the shape is easily restricted, such as under the eaves.
[0025]
An opening member 8 with a ventilation window 11 is provided in the ventilation introduction opening 7 of the ventilation unit 3.
[0026]
The sound absorbing body 5 is provided in the opening member 8. Specifically, a rod portion 12 is provided upright on the opening member 8 and extends to the back side of the ventilation space portion 4 with the axis of the ventilation space portion 4 as the axis, and a sound absorbing member 13 is fitted on the rod portion 12 to absorb sound. It is a configuration that becomes the body 5.
[0027]
In addition, as the sound absorbing material 6 and the sound absorbing member 13, a generally used sound absorbing material, for example, urethane foam or the like is used.
[0028]
Since the present embodiment is configured as described above, the noise that has entered the ventilation space portion 4 from the ventilation introduction opening 7 of the ventilation portion 3 is reflected by the inner wall of the ventilation portion 3 and the sound absorber 5 while the tube material 1 side ( In this case, the noise reflected on the inner wall of the ventilation part 3 abuts and reflects on the sound absorbing body 5 only by moving a short distance. (See the arrow indicated by the symbol X in FIG. 2), and the noise is inevitably absorbed by the sound absorber 5 so that the noise is favorably absorbed and attenuated. It becomes a ventilation port excellent in extremely high practicality.
[0029]
Further, even if the cross-sectional areas of the ventilation introduction opening 7 and the ventilation space 4 are large, the distance in which noise is reflected can be shortened due to the presence of the sound absorber 5, which is an important characteristic inherent to the ventilation port a. It becomes a ventilation port excellent in practicality that can exhibit good air permeability.
[0030]
Further, since the sound absorbing material 6 is provided on the inner wall of the ventilation unit 3, even when the noise is reflected on the inner wall of the ventilation unit 3, the sound is absorbed by the sound absorbing material 6, and the noise is further absorbed. The frequency of the ventilation increases, and the effect of preventing the noise income to the indoors is further improved, and the ventilation opening is excellent in practicality.
[0031]
In addition, a cylindrical ventilation part 3 is adopted as the ventilation part 3, and the axis of the cylinder 2 and the axis of the ventilation part 3 are orthogonal to each other, and the ventilation introduction opening 7 is provided on the lower surface of the ventilation part 3. As a result, the noise that has entered through the ventilation introduction opening 7 cannot proceed linearly to the pipe member 1, and the effect of preventing noise income indoors is further improved, and the ventilation port is excellent in practicality. It becomes.
[0032]
Further, since the sound absorbing body 5 is provided on the axis of the ventilation introduction opening 7, the distance between the sound absorbing body 5 and the inner wall of the ventilation section 3 becomes uniform, and noise entering from any part of the ventilation introduction opening 7. Even so, it becomes a ventilation port that is even more practical than it would be to absorb sound uniformly.
[0033]
Further, since the sound absorber 5 is attached to the opening member 8 provided in the ventilation introduction opening 7, when the opening member 8 is assembled to the ventilation unit 3, the sound absorber 5 is inserted into the ventilation space 4 of the ventilation unit 3. Can be installed, it is easy to manufacture, and it can be easily modified even with existing vents.
[0034]
Further, since the sound absorbing member 5 has a structure in which the sound absorbing member 13 is fitted on the outer peripheral surface of the rod portion 12, the sound absorbing member 13 is supported by the rod portion 12, so that the sound absorbing member 13 made of a soft material has ventilation. This is a ventilation port that is well held in the introduction opening 7 and that is more practical than the sound absorbing function that the sound absorbing body 5 necessarily exerts.
[0035]
[Brief description of the drawings]
FIG. 1 is an explanatory side view of the present embodiment.
FIG. 2 is an explanatory side sectional view of the present embodiment.
FIG. 3 is an explanatory sectional view taken along line AA of the present embodiment.
[Explanation of symbols]
a Ventilation port 1 Tube material 2 Tube part 3 Ventilation part 4 Ventilation space part 5 Sound absorber 6 Sound absorbing material 7 Vent introduction opening 8 Opening member

Claims (4)

A ventilation port attached to a pipe having a ventilation function, the ventilation port is composed of a tube portion connected to the tube material and a ventilation portion connected to the front side of the tube portion, and the inside of the ventilation portion A ventilation port, wherein a sound absorber is provided in the ventilation space at a predetermined distance from an inner wall of the ventilation unit. 2. The ventilation port according to claim 1, wherein a sound absorbing material is provided on an inner wall of the ventilation section at a predetermined interval from the sound absorbing body. The ventilation port according to any one of claims 1 and 2, wherein the ventilation section is provided with an opening member attached to the ventilation introduction opening of the ventilation space section, and a sound absorber is connected to the opening member. A ventilation opening characterized by the fact that: The ventilation opening according to any one of claims 1 to 3, wherein the ventilation opening has a configuration in which a cylindrical ventilation portion is continuously provided to the cylindrical portion, and further includes a shaft center of the cylindrical portion and the ventilation portion. A ventilation port, wherein the ventilation core is configured to be orthogonal to the axis, and a ventilation introduction opening of a ventilation space is provided below the ventilation part.

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