JP2022025920A - Ventilation device - Google Patents

Abstract

To provide a ventilation device which enables easy installation and can prevent air in a living space from flowing to another living space.SOLUTION: A ventilation device 100 according to an embodiment is installed in a ventilation hole 8 formed in a wall 89, and includes a fan 1 for discharging indoor air to the outside, a holding mechanism 2 for holding the fan 1 spaced away from the ventilation hole 8, and an annular body 3 provided between the fan 1 and the ventilation hole 8.SELECTED DRAWING: Figure 2

Description

The present invention relates to a ventilator.

Many houses have been constructed with a 24-hour ventilation system that ventilates the room 24 hours a day. The 24-hour ventilation system introduces outside air into the room through an air supply port installed on the wall surface, and discharges the introduced air into the room to the outside. At the air supply port, a register that can be opened and closed to adjust the amount of air introduced into the room is installed, and after opening the register, the ventilation fan installed in the bathroom etc. is operated to operate the outside air. Is introduced into the room from the air supply port. Even if the door of the living room is closed, the gap (undercut) between the lower part of the door of the living room and the floor surface and the ruggedness of the door become the air passage, and the outside air introduced from the air supply port passes through the room and the bathroom etc. It will be discharged to the outside and ventilated.

By the way, in the case of suffering from influenza virus, COVID-19, etc., measures are generally taken to isolate the patient in order to prevent the spread of the infection. However, when the patient is isolated in the living room in a house where a 24-hour ventilation system is installed, by operating the 24-hour ventilation system, the air in the living room where the patient is located passes through the corridor or another living room, and a ventilation fan is installed. It will reach the bathroom etc. Therefore, the air containing the virus may flow out to other living rooms or the like.

Conventionally, Patent Document 1 has been disclosed as a technique capable of ventilating a room even if it is unmanned. Patent Document 1 describes an electric fan detachably attached to a vent provided in a room, a solar panel connected so as to be able to supply power to the electric fan, and the vent as an exhaust port by driving the electric fan. Disclosed is an indoor ventilation device characterized in that a flow path of air to be ventilated can be formed to ventilate the room.

However, in the technique disclosed in Patent Document 1, since the electric fan is installed inside the vent, it is necessary to make the electric fan smaller than the vent and fill the gap between the electric fan and the vent with packing. If a register is provided in the vent, it is necessary to remove all the registers in order to install the electric fan inside the vent. As described above, the disclosure technique of Patent Document 1 has a problem that it is difficult to easily install it.

JP-A-2015-90234

The present invention has been made in view of the above problems, and an object thereof is ventilation that can be easily installed and can prevent air in a living room from flowing out to another living room. To provide the equipment.

The ventilation device according to the present invention is a ventilation device installed in a ventilation port formed on a wall, and holds a fan for discharging indoor air to the outside and the fan separated from the ventilation port. It is characterized by comprising a holding mechanism for the purpose and an annular ring body provided between the fan and the ventilation port.

According to the present invention, it can be easily installed, and it is possible to prevent the air in the living room from flowing out to another living room.

FIG. 1 is a schematic plan view showing a house in which an example of the ventilation device according to the first embodiment is installed. FIG. 2 is an exploded perspective view showing an example of the ventilation device according to the first embodiment. FIG. 3 is a side view showing an example of the ventilation device according to the first embodiment. FIG. 4A is a rear view showing a first example of the first frame body, and FIG. 4B is a side view showing the first example of the first frame body. FIG. 5A is a front view showing a first example of the second frame body, and FIG. 5B is a side view showing the first example of the second frame body. FIG. 6A is a rear view showing a first example of the annular body, and FIG. 6B is a side view showing the first example of the annular body. 7A and 7B are views for explaining the installation method of the ventilation device according to the first embodiment, FIG. 7A is a side view showing a wall before the ventilation device is installed, and FIG. 7B is a side view. , Is a side view showing a state in which the second frame is fixed to the wall. FIG. 8 is a view for explaining the installation method of the ventilation device according to the first embodiment, and FIG. 8A is a side view showing a state in which the first frame body is fitted to the second frame body. 8 (b) is a side view showing a state in which the ventilation device is installed on the wall. FIG. 9 is a schematic plan view showing a house in which an example of the ventilation device according to the first embodiment is installed. FIG. 10 (a) is a side view showing an example of a ventilation device according to the first embodiment installed in a ventilation port in which a push-type register is installed, and FIG. 10 (b) is a side view showing a push with a cover removed. It is a side view which shows an example of the ventilation apparatus which concerns on 1st Embodiment installed in the ventilation port where the type register is installed. FIG. 11 is a side view showing an example of the ventilation device according to the first embodiment in which the second example of the annular body is used. 12 (a) is a rear view showing a third example of the annular body, and FIG. 12 (b) is a side view showing the third example of the annular body. FIG. 13 is a side view showing an example of the ventilation device according to the first embodiment in which the third example of the annular body is used. 14 (a) is a rear view showing a fourth example of the annular body, and FIG. 14 (b) is a side view showing the fourth example of the annular body. 15 (a) is a rear view showing a fifth example of the annular body, and FIG. 15 (b) is a side view showing the fifth example of the annular body. FIG. 16 is a perspective view showing a second example of the first frame body. FIG. 17 is a perspective view showing a second example of the second frame body. FIG. 18 is a diagram illustrating a method of installing the ventilation device according to the second embodiment, and FIG. 18A is a plan view showing a state in which the first frame body is fitted to the second frame body. 18 (b) is a side view showing a state in which the first frame body is fitted to the second frame body. FIG. 19 is a diagram illustrating a method of installing the ventilation device according to the second embodiment, and FIG. 19A is a plan view showing a state in which the ventilation device is installed on the wall, and FIG. 19B is a plan view. Is a side view showing a state in which the ventilation device is installed on the wall.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Further, in each figure, common reference numerals are given to common parts, and duplicate explanations are omitted.

<First Embodiment>
As shown in FIG. 1, the ventilation device 100 is installed in the residence A in which the 24-hour ventilation system 9 is installed. The residence A mainly has a bathroom B, a toilet W, living rooms E, F, G, and a living room L. Ventilation ports 8 are provided in each of the living rooms E, F, G, and the living room L. The ventilation port 8 is installed on the wall 89 of the living room and communicates indoors and outdoors. The 24-hour ventilation system 9 includes a ventilation fan 91 installed in the bathroom B and the toilet W, and a register 95 installed in the ventilation port 8.

As shown in FIGS. 2 to 6, the ventilation device 100 is provided, for example, in the ventilation port 8 formed on the wall 89 in the living room E. The ventilation device 100 is arranged on the wall 89 on the indoor side. The register 95 adjusts the amount of air introduced from the outside, and is configured to be openable and closable. The ventilation device 100 includes a fan 1, a holding mechanism 2, and an annular body 3.

The fan 1 is for discharging indoor air to the outside. The fan 1 can rotate by supplying electric power from a power source (not shown) to a built-in motor. A protective cover 11 for protecting the fan 1 is provided on the outside of the fan 1.

The fan 1 is provided with a pressing portion 4. The pressing portion 4 presses the annular body 3 toward the ventilation port 8 side. A plate material is used for the pressing portion 4, and the center thereof is opened. The pressing portion 4 is in contact with the annular body 3 and is arranged between the annular body 3 and the fan 1. The pressing portion 4 is formed larger than the fan 1.

The holding mechanism 2 is for holding the fan 1 away from the ventilation port 8. The holding mechanism 2 has a first frame body 21, a second frame body 22, and a guide portion 23.

The first frame body 21 fixes the fan 1 and is fitted to the second frame body 22. The first frame body 21 has a main plate 211, a side plate 212, and a fitting claw 213. The main plate 211 is formed in a rectangular shape and is arranged on the opposite side of the annular body 3 with the fan 1 interposed therebetween. A louver 211a is formed on the main plate 211. A fan 1 arranged to face the louver 211a is fixed to the main plate 211 with screws, screws, or the like (not shown). The side plates 212 are arranged on all sides of the outer edge of the main plate 211 so as to surround the fan 1. The fitting claw 213 is formed on the lower side plate 212 and is fitted to the second frame body 22. The outer shape of the main plate 211 may be formed into a circular shape, a square shape, or the like.

The second frame body 22 is for fixing to the wall 89 on which the ventilation port 8 is formed. The second frame body 22 has a frame main body portion 221 having an open center and a rectangular outer shape, and a fitting receiving portion 222 fitted to the fitting claw 213. The fitting receiving portion 222 is formed in the lower part of the frame main body portion 221. The second frame body 22 is fixed to the wall 89 by a fixing member 5 such as an adhesive, double-sided tape, or a stapler.

The guide portion 23 is for guiding the first frame body 21 to the second frame body 22 when the first frame body 21 is fitted to the second frame body 22. The guide portion 23 swings the first frame body 21 in a state where the first frame body 21 is hooked on the second frame body 22 fixed to the wall 89, and the first frame body 21 becomes the second frame body 22. Guide.

The guide portion 23 has a first protruding portion 231 formed on the first frame body 21 and a hook 232 formed on the second frame body 22. The first protruding portion 231 has a rod-shaped portion 231a, and by hooking the rod-shaped portion 231a on the hook 232, the first frame body 21 can swing around the rod-shaped portion 231a. The first protrusion 231 is formed on the upper side plate 212. The hook 232 is formed on the upper part of the second frame body 22.

The annular body 3 is provided between the ventilation port 8 and the fan 1 and is formed in an annular shape. The annular body 3 is made of a resin foam such as urethane foam. The annular body 3 is pressed by the pressing portion 4 and can be elastically deformed. The outer shape of the annular body 3 may be polygonal.

The annular body 3 has a first opening 31 on the ventilation port 8 side and a second opening 32 on the fan 1 side. The annular body 3 is formed of an inclined surface whose inner surface 33 is inclined at a uniform angle, and the inner diameter d1 of the first opening 31 is larger than the inner diameter d2 of the second opening 32. The inner diameter d2 of the second opening 32 has substantially the same size as the opening of the pressing portion 4. In the annular body 3, the wall thickness t1 at the first opening 31 is thinner than the wall thickness t2 at the second opening 32.

Next, the method of installing the ventilation device 100 according to the first embodiment will be described by taking as an example the case where the ventilation device 100 is installed in the ventilation port 8 of the living room E.

As shown in FIG. 7A, a round register 95 having a built-in filter is installed in the ventilation port 8. The register 95 is kept open so that indoors and outdoors can communicate with each other.

Then, as shown in FIG. 7B, the second frame body 22 is fixed to the wall 89 on which the ventilation port 8 is formed by a fixing member 5 such as double-sided tape.

Next, as shown in FIG. 8, the first frame body 21 is fitted to the second frame body 22 fixed to the wall 89. A fan 1 is fixed to the first frame body 21, and a pressing portion 4 and an annular body 3 are fixed to the fan 1. Here, when the reference surface M1 connecting the tip of the upper side plate 212 and the tip of the lower side plate 212 is used, the end surface of the annular body 3 on the first opening 31 side is opposite to the fan 1 with the reference surface M1 in between. It is projected to the side.

As shown in FIG. 8A, when the first frame body 21 is fitted to the second frame body 22, the first protruding portion 231 is hooked on the hook 232. Then, with the first protruding portion 231 hooked on the hook 232, the first frame body 21 is swung around the first protruding portion 231.

As a result, as shown in FIG. 8B, the annular body 3 projecting from the reference surface M1 to the opposite side of the fan 1 is pressed toward the ventilation port 8 by the pressing portion 4. Therefore, the first opening 31 side of the annular body 3 is crushed by being in contact with one or both of the wall 89 and the register 95, the inner surface 33 is curved, and the first opening 31 side expands outward. It will be opened. After that, the fitting claw 213 is fitted to the fitting receiving portion 222, and the first frame body 21 is fitted to the second frame body 22.

With the above, the installation of the ventilation device 100 is completed. After the installation of the ventilator 100 is completed, the fan 1 is rotated. As a result, the air in the living room E can pass through the inside of the annular body 3 in the direction of the arrow P in the figure and be exhausted to the outside from the ventilation port 8. When rotating the fan 1, it is preferable to stop the ventilation fan 91 in the 24-hour ventilation system 9.

As a result, as shown in FIG. 9, the outside air introduced from each of the ventilation ports 8 of the living room F, G, and the living room L in which the ventilation device 100 is not provided flows in the direction of the arrow Q in the figure, and the living room E Introduced within. Then, the air in the living room E is discharged to the outside by the ventilation device 100. Therefore, it is possible to prevent the room E from leaking to the outside. Therefore, for example, by isolating the patient in the living room E in which the ventilation device 100 is installed, it is possible to prevent the air in the living room E containing the virus from flowing out to another living room.

According to the present embodiment, the ventilation device 100 provided in the ventilation port 8 formed on the wall 89, the fan 1 for discharging the indoor air to the outside, and the fan 1 are separated from the ventilation port 8. A holding mechanism 2 for holding and an annular body 3 provided between the ventilation port 8 and the fan 1 are provided. As a result, when the fan 1 is rotated, the air in the living room E can pass through the inside of the annular body 3 and be exhausted to the outside through the ventilation port 8. Therefore, it is possible to prevent the air in the living room from being discharged to the outside and flowing out to another living room. That is, the negative pressure chamber can be easily installed.

In addition, according to the present embodiment, it can be retrofitted to the ventilation port 8 which is the air supply port provided with the register 95 of the 24-hour ventilation device 9. As a result, there is no need to bother to remove the register 95, and no large-scale construction work is required. Therefore, it can be easily installed.

According to the present embodiment, a pressing portion 4 for pressing the annular body 3 toward the ventilation port 8 is further provided, and the annular body 3 can be pressed and deformed. As a result, the annular body 3 can be reliably pressed against the wall 89. Therefore, the air passing through the inside of the annular body 3 can be exhausted to the outside through the ventilation port 8 without leaking to the outside of the annular body 3. As a result, it is possible to efficiently discharge the air in the living room to the outside and prevent it from flowing out to another living room.

Here, the register 95 is provided in the ventilation port 8 so as to project from the wall surface on the indoor side of the wall 89. In particular, according to the present embodiment, since the annular body 3 is provided, even if the register 95 is projected from the wall surface of the wall 89, the annular body 3 can be deformed and installed along the register 95. can. Therefore, even when the register 95 is installed in the ventilation port 8, it can be easily installed.

According to the present embodiment, the annular body 3 is further provided with a pressing portion 4 for pressing the annular body 3 toward the ventilation port 8, and the annular body 3 has a wall thickness t1 of the first opening 31 and a meat thickness of the second opening 32. It is thinner than the thickness t2. As a result, when the annular body 3 is reliably pressed against the wall 89, the first opening 31 side of the annular body 3 can be easily deformed. Therefore, it is possible to prevent the air passing through the inside of the annular body 3 from leaking to the outside of the annular body 3 and exhaust the air to the outside through the ventilation port 8. As a result, it is possible to efficiently discharge the air in the living room to the outside and prevent it from flowing out to another living room.

According to the present embodiment, the holding mechanism 2 includes a first frame body 21 for fixing the fan 1 and a second frame body 22 for being fitted to the first frame body 21 and fixed to the wall 89. , Have. As a result, it is only necessary to fit the first frame body 21 to the second frame body 22 fixed to the wall 89, and the ventilation device 100 can be easily installed.

According to the present embodiment, the holding mechanism 2 further includes a guide portion 23 for guiding the first frame body 21 to the second frame body 22. This makes it possible to easily perform the work of fitting the first frame body 21 to the second frame body 22 fixed to the wall 89. Therefore, the ventilation device 100 can be easily installed.

In the above-described embodiment, the round register 95 has been described as an example, but the register 95 may be a square register.

As shown in FIG. 10A, the register 95 provided in the ventilation port 8 may be a push type register. The push-type register 95 has a cover 96 that can be opened and closed. The register 95 is formed with irregularities on the wall surface of the wall 89. Even in such a case, the ventilator 100 can be installed by deforming the annular body 3 along the register 95 and the cover 96. Therefore, even when the register 95 is installed in the ventilation port 8, it can be easily installed.

As shown in FIG. 10B, in the push-type register 95, the ventilation device 100 may be installed with the cover 96 removed. Even in such a case, the ventilator 100 can be installed by deforming the annular body 3 along the register 95. Therefore, even when the register 95 is installed in the ventilation port 8, it can be easily installed.

Although not shown, the ventilation device 100 may be installed in the ventilation port 8 in which the register 95 is not installed. Even in such a case, the ventilation device 100 can be easily installed.

As shown in FIG. 11, in the annular body 3, the end face on the side of the first opening 31 may be in contact with either one or both of the wall 89 and the register 95. At this time, the annular body 3 may not be deformed.

As shown in FIGS. 12 (a) and 12 (b), in the annular body 3, the first opening 31 may be formed in a circular shape and the second opening 32 may be formed in a square shape. At this time, as shown in FIG. 13, the second opening 32 is formed in a shape into which the fan 1 is fitted. The fan 1 is arranged and fitted inside the second opening 32 of the annular body 3. The end surface of the annular body 3 on the side of the second opening 32 is in contact with the main plate 211. The main plate 211 functions as a pressing portion 4 for pressing the annular body 3 toward the ventilation port 8.

According to this embodiment, the fan 1 is arranged inside the second opening 32. Thereby, when the ventilation device 100 is installed on the wall 89, the length of the ventilation device 100 protruding from the wall 89 can be reduced. Therefore, the ventilation device 100 can be made thinner.

As shown in FIG. 14, the annular body 3 may have a plurality of cuts 34 having a predetermined depth on the end face on the side of the first opening 31. As a result, when the annular body 3 is pressed against the wall 89, the cut 34 is widened and the first opening 31 side of the annular body 3 can be easily deformed. Therefore, the air passing through the inside of the annular body 3 can be exhausted to the outside through the ventilation port 8 without leaking to the outside of the annular body 3. As a result, it is possible to efficiently discharge the air in the living room to the outside and prevent it from flowing out to another living room.

As shown in FIG. 15, in the annular body 3, the inner diameter d1 of the first opening 31 may be the same as the inner diameter d2 of the second opening 32. According to the present embodiment, since the annular body 3 is provided, even when the register 95 protrudes from the wall surface of the wall 89, the annular body 3 can be deformed and installed along the register 95. Therefore, even when the register 95 is installed in the ventilation port 8, it can be easily installed.

<Second Embodiment>
In the ventilation device 100 according to the second embodiment, the holding mechanism 2 is mainly different from the first embodiment.

As shown in FIGS. 16 and 17, the holding mechanism 2 is for holding the fan 1 away from the ventilation port 8. The holding mechanism 2 has a first frame body 21, a second frame body 22, and a guide portion 23.

The first frame body 21 fixes the fan 1 and is fitted to the second frame body 22. The first frame body 21 has a main plate 211 and a fitting receiving portion 214. The main plate 211 is in contact with the end surface of the second opening 32 of the annular body 3 and functions as a pressing portion 4 for pressing the annular body 3 toward the ventilation port 8. The fitting receiving portion 214 is formed on the upper portion and the lower portion of the main plate 211, and is fitted to the second frame body 22.

The second frame body 22 is for fixing to the wall 89 on which the ventilation port 8 is formed. The second frame body 22 has a frame main body portion 221 having an open center and a rectangular outer shape, a fitting claw 223 for fitting into the fitting receiving portion 214, and a plurality of holes 224. The fitting claws 223 are formed on the upper portion and the lower portion of the frame main body portion 221. In the second frame body 22, the backing plate 225 is fitted into the hole 224. The second frame body 22 is fixed to the wall 89 by passing a fixing member 5 such as a stapler through a backing plate 225 fitted in the hole 224.

The guide portion 23 is for guiding the first frame body 21 to the second frame body 22 when the first frame body 21 is fitted to the second frame body 22. The guide portion 23 moves the first frame body 21 to the second frame body 22 fixed to the wall 89 along the direction orthogonal to the wall 89, and guides the first frame body 21 to the second frame body 22. ..

The guide portion 23 has a first protruding portion 233 formed on the first frame body 21 and a second protruding portion 234 formed on the second frame body 22. The first protrusion 233 extends toward the second frame 22 and is formed in an L-shaped cross section. The first protrusions 233 are arranged at the four corners of the rectangular main plate 211 and extend in parallel with the second protrusions 234. The second protruding portion 234 is formed in a rod shape and is arranged at the four corners of the frame main body portion 221 having a rectangular outer shape. The guide portion 23 slides the first protruding portion 233 to the second protruding portion 234 along the protruding direction of the first protruding portion 233, and guides the first frame body 21 to the second frame body 22.

Next, the method of installing the ventilation device 100 according to the second embodiment will be described by taking as an example the case where the ventilation device 100 is installed in the ventilation port 8 of the living room E.

As shown in FIG. 18A, a round register 95 having a built-in filter is installed in the ventilation port 8. The register 95 is kept open so that indoors and outdoors can communicate with each other.

Then, the second frame 22 is fixed to the wall 89 on which the ventilation port 8 is formed by a fixing member 5 such as a stapler.

Next, the first frame body 21 is fitted to the second frame body 22 fixed to the wall 89. A fan 1 is fixed to the first frame body 21. The fan 1 is arranged inside the second opening 32 of the annular body 3. Further, the annular body 3 is in contact with the main plate 211 which is the pressing portion 4. Here, when the reference surface M2 connecting the tip of the upper first protrusion 233 and the tip of the lower first protrusion 233 is used, the end face of the annular body 3 on the first opening 31 side serves as the reference surface M2. It is sandwiched and projected to the opposite side of the fan 1.

When fitting the first frame 21 to the second frame 22, the first protrusion 233 is slid along the second protrusion 234 in the direction of arrow X in the drawing.

As a result, as shown in FIGS. 19 (a) and 19 (b), the annular body 3 projecting from the reference surface M2 to the opposite side of the fan 1 is pressed by the pressing portion 4. Therefore, the first opening 31 side of the annular body 3 is crushed by being in contact with either one or both of the wall 89 and the register 95, the inner surface 33 is curved, and the first opening 31 side expands outward. It will be opened. After that, the fitting claw 223 is fitted to the fitting receiving portion 214, and the first frame body 21 is fitted to the second frame body 22.

With the above, the installation of the ventilation device 100 is completed. After the installation of the ventilator 100 is completed, the fan 1 is rotated. As a result, the air in the living room E can pass through the inside of the annular body 3 and be exhausted to the outside through the ventilation port 8.

According to the present embodiment, the ventilation device 100 provided in the ventilation port 8 formed on the wall 89, the fan 1 for discharging the indoor air to the outside, and the fan 1 are separated from the ventilation port 8. A holding mechanism 2 for holding and an annular body 3 provided between the ventilation port 8 and the fan 1 are provided. As a result, when the fan 1 is rotated, the air in the living room E can pass through the inside of the annular body 3 and be exhausted to the outside through the ventilation port 8. Therefore, it is possible to prevent the air in the living room from being discharged to the outside and flowing out to another living room.

In addition, according to the present embodiment, it can be retrofitted to the ventilation port 8 which is the air supply port provided with the register 95 of the 24-hour ventilation device 9. As a result, there is no need to bother to remove the register 95, and no large-scale construction work is required. Therefore, it can be easily installed.

In addition, according to the present embodiment, the guide portion 23 has a first protruding portion 233 formed on the first frame body 21, a second protruding portion 234 formed on the second frame body 22, and a first protruding portion. The portion 233 extends in parallel with the second protruding portion 234. As a result, the guide portion 23 can slide the first protruding portion 233 to the second protruding portion 234 along the protruding direction of the first protruding portion 233 to guide the first frame body 21 to the second frame body 22. .. Therefore, the annular body 3 can be uniformly pressed against the wall 89. As a result, the air passing through the inside of the annular body 3 can be exhausted to the outside through the ventilation port 8 without leaking to the outside of the annular body 3.

Although some of the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. Moreover, these embodiments can be carried out in combination as appropriate. Further, the present invention can be carried out in various novel embodiments in addition to the above-mentioned some embodiments. Therefore, each of the above-mentioned embodiments can be variously omitted, replaced, or changed without departing from the gist of the present invention. Such novel forms and modifications are included in the scope and gist of the present invention, as well as in the scope of the invention described in the claims and the equivalent of the invention described in the claims.

100: Ventilation device 1: Fan 11: Protective cover 2: Holding mechanism 21: First frame body 211: Main plate 211a: Louver 212: Side plate 213: Fitting claw 214: Fitting receiving part 22: Second frame body 221: Frame Main body 222: Fitting receiving part 223: Fitting claw 224: Hole 225: Support plate 23: Guide part 231: First protruding part 231a: Rod-shaped part 232: Hook 233: First protruding part 234: Second protruding part 3 : Circular body 31: 1st opening 32: 2nd opening 33: Inner surface 34: Cut 4: Pressing part 5: Fixing member 8: Ventilation port 89: Wall 91: Ventilation fan 95: Register 96: Cover

Claims (6)

It is a ventilation device installed in the ventilation port formed on the wall.
With a fan to exhaust the indoor air to the outside,
A holding mechanism for holding the fan away from the ventilation port,
A ventilation device comprising an annular ring body provided between the fan and the ventilation port. A pressing portion for pressing the annular body toward the ventilation port side is further provided.
The ventilation device according to claim 1, wherein the annular body is deformable by pressing. A pressing portion for pressing the annular body toward the ventilation port side is further provided.
The annular body has a first opening on the ventilation port side and a second opening on the fan side, and the wall thickness at the first opening is thinner than the wall thickness at the second opening. The ventilation device according to claim 1 or 2, characterized in that. The annular body has a first opening on the ventilation port side and a second opening on the fan side.
The ventilation device according to any one of claims 1 to 3, wherein the fan is arranged inside the second opening. The holding mechanism is characterized by having a first frame body for fixing the fan and a second frame body for being fitted to the first frame body and fixed to the wall. Item 6. The ventilation device according to any one of Items 1 to 4. The ventilation device according to claim 5, wherein the holding mechanism further includes a guide portion for guiding the first frame body to the second frame body.

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