JP2001349149A - Ventilating apparatus and door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilating apparatus which can carry out ventilation, is high in safety in terms of crime prevention and fire protection, and can protect privacy. SOLUTION: The ventilating apparatus has a ventilating passage 65 connecting slits 22a and 23a formed on both sides of a casing 21, and a damper 29 arranged in a downward movable manner from an opening position to a lower closing position. Then, a metal fixture 30 for supporting the damper 29 or releasing the support of the damper depending on the temperature thereof is provided. Further, a slit 29a of the damper 29 opens the ventilating passage 65 at the opening position, and a closing portion 29t of the damper 29 closes the ventilating passage 65 at the closing position. Thus, the ventilating passage 65 is interrupted in the event of a fire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator and a door which can be installed at an entrance of a condominium or the like and which can suitably ventilate inside and outside without opening the door.

[0002]

2. Description of the Related Art Ventilation inside an entrance, where air tends to stay,
A possible method is to open the entrance door and ventilate it. However, the use of open holding devices for entrance doors of condominiums and the like is not permitted by the Building Standards Law for crime prevention and fire prevention. Therefore, for example, in many cases, each individual purchases an open holding device at a home center or the like and installs it at a front door to perform the above-described ventilation method.

[0003]

However, from the viewpoint of crime prevention and fire prevention, the entrance door of an apartment (condominium) or the like must always be closed except when it is open for access. Therefore, the above-described ventilation method for opening the entrance door has a problem in safety such as crime prevention and fire prevention. Above all,
It is impossible to go out at night with ventilation. In addition, since the entrance door is opened, the interior of the dwelling unit can be seen from the outside, which causes a problem in privacy.

In view of the above circumstances, an object of the present invention is to provide a ventilation device and a door which can perform ventilation, have high security for crime prevention and fire prevention, and can protect privacy.

[0005]

Means for Solving the Problems According to the present invention for solving the above-mentioned problems, a ventilating device (2) installed on a door body (2) capable of opening and closing a dwelling unit opening (60) is provided.
0, 200), a casing (21) installed through the front and back of the door main body, a first air hole (22a) formed through one of the front and back walls (22) of the casing. A second air hole (23a) opened on the other side of the casing, an air flow passage (65) formed in the casing so as to connect the first and second air holes, and the wall portion Along the open position (O
(P) a shielding member (29) movably provided from a lower position to a closed position (CP), and support means for supporting and releasing the shielding member at the open position with respect to the casing in accordance with temperature. (30), wherein the shielding member is formed so as to penetrate the shielding member, and the opening hole is arranged corresponding to the first air hole in a state where the shielding member is arranged at the opening position. (29a), and a closing portion (29t) corresponding to the first air hole in a state where the shielding member is disposed in the closed position.

According to a second aspect of the present invention, the support means is a support fitting (30) formed of a thermal fuse and supporting the shielding member at the open position with respect to the casing in a non-fused state. It is characterized by the following.

According to a third aspect of the present invention, the supporting means is formed of a shape memory alloy, and supports and releases the shielding member with respect to the casing at the open position by a deformation operation according to temperature. It is a support fitting.

According to a fourth aspect of the present invention, a blade member (46, 460) is provided in the casing, and the air flow is formed in a cross-sectional shape by a plane along a direction connecting the first and second air holes. The blade member is arranged so that a road has a meandering shape.

According to a fifth aspect of the present invention, the blade member is formed so that a cross-sectional shape of the bent portion (47c) of the air flow passage by the plane is curved.

According to a sixth aspect of the present invention, the blade member is formed such that the width of the air flow passage increases toward the first and second air holes in the cross-sectional shape of the plane. Features.

According to a seventh aspect of the present invention, there is provided a door body capable of opening and closing a dwelling unit opening, wherein the ventilating device according to any one of the first to sixth aspects is installed in the door body. It is a door (1) configured.

According to the present invention, there is provided a lighting unit (5) which allows light to pass through the front and back of the door body.
Is provided.

The numbers and the like in parentheses are for convenience showing the corresponding elements in the drawings, and therefore, the description is not limited to the description on the drawings.

[0014]

As described above, according to the first aspect of the present invention, normally, the first and second air holes and the open hole of the shielding member disposed at the open position are normally provided. Thus, ventilation can be performed through an air flow passage communicating between the front and back of the door. In other words, the door on which the ventilation device of the present invention is installed
Ventilation is possible even when closed. Naturally, ventilation is possible even with the door closed and locked. Therefore, since it is not necessary to open the door for ventilation as in the conventional case, security is high in terms of crime prevention, and privacy protection is realized. In a fire or the like, when the support means releases the support of the shielding member, the shielding member falls from the open position to the closed position below. Thereby, the closing portion of the shielding member is arranged corresponding to the first air hole, so that the air flow passage is shut off. As described above, in the event of a fire or the like, the air flow passage communicating between the front and back of the door is shut off, so that safety is high in terms of fire prevention.

According to the second aspect of the present invention, since the supporting means is formed of a thermal fuse, the support and release of the shielding member can be realized by a simple mechanism, and the manufacturing, miniaturization, operation reliability, and maintenance can be realized. Excellent in properties and the like.

According to the third aspect of the present invention, since the supporting means is formed of a shape memory alloy, it is possible to realize the support and release of the shielding member by a simple mechanism. Excellent in maintainability and so on. In addition, since the shape memory alloy performs a reversible operation, it is advantageous in that an operation test or the like can be performed before installation.

According to the fourth aspect of the present invention, since the air flow passage has a meandering shape, even if the user looks into the other side of the door through the first or second air hole, his line of sight is obstructed. I can not see it because it is rare. This further protects the resident's privacy.

According to the fifth aspect of the present invention, since the cross-sectional shape of the bent portion of the air flow passage is curved, the air flowing through the air flow passage hardly forms an eddy, and the turbulence is reduced. Thereby, the wind noise generated by the air passing through the air flow passage can be reduced.

According to a sixth aspect of the present invention, since the width of the air flow passage increases toward the first and second air holes, the amount of air taken in increases, and efficient ventilation is realized.

According to the seventh aspect of the present invention, since the door is provided with the above-described ventilation device, ventilation can be performed, security for crime prevention and fire prevention is high, and privacy can be protected. .

According to the eighth aspect of the present invention, light can be collected through a light collecting section, which is convenient.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan sectional view showing details of the vicinity of the ventilator, FIG. 2 is a view taken in the direction of the arrow I in FIG. 1, FIG. 3 is a side sectional view of the ventilator, FIG. 4 is a side view schematically showing a cylinder,
FIG. 5 is a rear view schematically showing the damper, and FIG. 6 is a front view showing the entire door.

As shown in FIG. 6, each dwelling unit of the condominium (a multi-family house) has an entrance opening 60 communicating with the inside and outside of the dwelling unit, and the entrance opening 60 has a substantially plate-like door 1.
Is installed to be freely opened and closed by a hinge or the like (not shown).
FIG. 6 is a view of the door 1 as viewed from the outside of the dwelling unit. (The door may be of a sliding type other than the rotating type as in the present embodiment.)

As shown in FIG. 6, the door 1 has a plate-shaped main body 2 fitted in an entrance opening 60, and the main body 2 is provided with an appropriate knob 3. Further, a slit 5 extending vertically is formed in the main body 2 so as to penetrate the front and back sides, and frosted glass or the like is fitted into the slit 5. That is, the slit 5 is a lighting part that allows light to pass through the front and back of the main body 2. Further, the main body 2 is formed with a vertically extending slit-shaped device installation part 6 penetrating the front and back, and a ventilation device 20 is installed in the device installation part 6.

As shown in FIGS. 1 to 3, the ventilation device 20 includes a casing 21 fitted and installed in the device installation portion 6.
The wall portion of the casing 21 which is disposed on the front side of the door 1 (on the front side in FIG. 6) passes through the inside and outside of the casing 21 (penetrates the front and back of the wall portion). Front plate unit 2 with slits formed with slits 22a
It is 2. In addition, a large number of walls of the casing 21 that are disposed on the back side of the door 1 (the side opposite to the slitted front plate section 22) pass through the inside and outside of the casing 21 (through the front and back of the wall). Are formed to form the slit-back plate portion 23.

As shown in FIGS. 2 and 3, the slits 22a of the front plate portion 22 with slits and the slits 23a of the back plate portion 23 with slits have the same shape elongated in the horizontal direction. Upper and lower adjacent slits 22a, 22a and slits 23a, 23a are arranged at a constant interval L1. In the present embodiment, the slits 22a and the slits 23a are arranged in a one-to-one correspondence with each other in the horizontal direction (the direction of the arrow A in the drawing, which is the communication direction of the entrance opening 60). The flat cross-sectional shape of the slit-equipped front plate portion 22 is a circular arc protruding toward the front side of the door 1.

As shown in FIGS. 1 to 3, a sheet-like mesh member 25 is provided in the casing 21 so as to cover the inner surface of the front plate portion 22 with slits. This mesh material 25 is a metal plate 26 for fixing which sandwiches the mesh material 25 between itself and the front plate portion 22 with slits.
(Having a shape that is appropriately curved in accordance with the surface of the front plate portion 22 with slits) and screws 27 that pass through the metal plate 26 and are screwed and fixed to the inner surface side of the front plate portion 22 with slits. It is fixed in place. The mesh material 25 allows air to pass freely, but does not allow insects such as mosquitoes and flies and large dust to pass therethrough, and is used for general screens and the like.

1 to 3 are provided in the casing 21.
As shown in FIG. 7, a plate-shaped damper 29 is provided so as to cover substantially the entire surface of the mesh material 25 between the front plate portion 22 and the slit. The damper 29 is a front plate part 2 with a slit.
2, so that it is elongated vertically and has a flat cross section in an arc shape. The damper 29 is formed with a number of slits 29a penetrating the front and back of the damper 29, and has the same shape as the slits 22a and 23a described above. The arrangement interval between the vertically adjacent slits 29a, 29a is also a constant interval L1, similarly to the above-described slits 22a, 23a. Note that the slit 22a of the front plate portion 22 with a slit and the slit 29 of the damper 29 are provided.
"a" is arranged in a one-to-one correspondence in the horizontal direction (the direction of arrow A in the figure). The portion of the damper 29 other than the slit 29a is a closed portion 29t in which no hole or the like is formed.

By the way, the damper 29 is fixed by a fixing bracket 30 composed of a known temperature fuse which melts in a predetermined high temperature state such as a fire. Specifically, as shown in FIGS. 2 and 3, one of the fixing portions of the mesh member 25 including the metal plate 26 and the screw 27 is located almost directly above the damper 29, and the screw 2
The plate-shaped fixing bracket 30 is also fixed to the slit-equipped front plate portion 22 by utilizing the 7. An end portion 30a of the fixture 30 projects downward, and presses and sandwiches the damper 29 between the end portion 30a and the front plate portion 22 with slits on which the mesh material 25 is installed. The damper 29 is fixedly supported by being pressed and sandwiched in this manner.

As shown in FIG. 5, the lower end 29b of the damper 29 fixed and supported as described above is disposed at a position spaced a predetermined distance L2 upward from the bottom 21a in the casing 21. That is, the fixedly supported damper 29 is in a state of floating from the bottom 21a. The distance L2 is about half the distance L1 between the slits 22a, 22a and between the slits 29, 29a.

FIGS. 1 to 5 show the inside of the casing 21.
As shown in (1), guide fittings 33 are provided near the upper end and the lower end of the damper 29. Each guide fitting 3
Reference numeral 3 denotes a substantially rectangular plate-shaped member parallel to the surface of the door 1. Each of the guide fittings 33 is joined to the inside of the casing 21 on both sides of the paper surface of FIGS. 1 and 2, and a predetermined guide space 35 is formed between the guide fitting 33 and the front plate portion 22 with slits. . That is, the damper 29 and the like are arranged in the guide space 35, and the damper 29 can be moved downward by being guided by the guide fittings 33, 33 so as not to be inadvertently displaced in the horizontal direction. .

Further, in the casing 21, FIGS.
As shown in FIG. 1, a cylinder 40 is provided. The cylinder 40 has a cylindrical body 41, and the cylindrical body 41 has a substantially cylindrical shape whose outer surface extends vertically. Shafts 42 and 42 are provided concentrically at the upper end and the lower end of the cylindrical body 41, and each shaft 42 is connected to the casing 21 so as to be rotatable. That is, the cylindrical body 41 is
1 is rotatable in the direction of arrow B in FIG.

In the vicinity of the upper end and the lower end of the cylindrical body 41,
Grooves 43 are formed on the surface side along the circumferential direction (the direction of arrow B in FIG. 6).
Each of the guide fittings 33 is inserted into each of the guides. That is, when the guide fitting 33 is inserted into the groove 43, the cylindrical body 41 is prevented from being accidentally shifted in the vertical direction. Since each groove 43 is formed along the circumferential direction of the column 41 as described above, the guide fitting 33 can move along the groove 43 when the column 41 rotates.
Thereby, rotation of the columnar body 41 can be performed without hindrance. Further, by adopting a structure in which the guide fitting 33 is inserted into the groove 43, the cylindrical body 41 is arranged close to the damper 29. In other words, the above-described arc-shaped shapes of the slit-equipped front plate portion 22 and the damper 29 are shapes that match the cylindrical body 41.

An air circulating portion 45 is formed between the grooves 43 in the cylindrical body 41 as shown in FIGS. 1, 3 and 4 (however, it is simply shown in FIG. 4).
The horizontal cross-sectional shape of the air circulating portion 45 is constant in the vertical direction, and the horizontal cross-sectional shape is as shown in FIG. That is, the air circulating portion 45 has a shape in which a hole penetrating in the horizontal direction is formed in a cylindrical shape, and the hole forms a flow path 47 having a substantially S-shaped horizontal cross section. The width of the flow channel 47 in the horizontal section at the opening portions 47a at both ends thereof is slightly widened in the opening direction, and is slightly narrowed at the center portion 47b. The bent portions 47c, 47c of the flow path 47 have a smooth curved horizontal cross section.

As described above, the air circulating portion 45 is divided into two by the flow path 47, and each of the two divided portions is
6, 46. In the state shown in FIG.
One opening 47a is located corresponding to the front plate portion 22 with slits, and the other opening 47a is located corresponding to the back plate portion 23 with slits. Hereinafter, this state is referred to as a state in which the cylinder 40 is at the ventilation position. Also,
When the cylinder 40 is in the ventilation position,
Rotating by 0 ° (counterclockwise in FIG. 1),
The outer peripheral surface 46a forming the surface of the column can be located corresponding to the front plate portion 22 with slits and the back plate portion 23 with slits, respectively. Hereinafter, this state is referred to as a state in which the cylinder 40 is at the shielding position.

As shown in FIG. 1, an appropriate frame member 50 adjacent to the side of the cylinder 40 is provided in the casing 21. A protrusion-like stopper 49 is provided on a side of the cylinder 41 of the cylinder 40. The frame member 50 has a groove 51 into which the stopper 49 is inserted.
The groove 51 is formed in a streak shape along the circumferential direction of the surface of the cylindrical body 41. That is, when the cylinder 41 rotates, the stopper 49 moves in the groove 51,
The stopper 49 abuts on both ends of the cylindrical body 41 to form the cylindrical body 41.
Rotation is regulated. The grooves 51 are formed at a pitch of about 90 ° about the center of rotation of the cylindrical body 41. As a result, the cylindrical body 41 can rotate only within a range of about 90 °.

As shown in FIGS. 1 and 4, the cylinder 41 of the cylinder 40 is provided with an operation lever 55 projecting in the horizontal direction. The operating lever 55 is the casing 2
1 protrudes to the outside on the side of the back plate portion with slits 23. That is, by operating the operation lever 55, the cylinder 40 can be rotated. Of course, the casing 21 is formed with a hole penetrating inside and outside so that the operation lever 55 can move (the detailed description is omitted because this part is a known technical content).

Since the door 1 is configured as described above, the inside of the entrance can be ventilated as follows when the door 1 is closed (the state shown in FIG. 6). That is, by operating the operation lever 55, the cylinder 40 is rotated to place the cylinder 40 in the ventilation position shown in FIG.

Thus, one opening 47a of the cylinder 40 is arranged corresponding to the front plate portion 22 with a slit of the casing 21, and the other opening 47a corresponds to the back plate portion 23 with a slit of the casing 21. Was placed. Accordingly, the slit 22a of the slit-equipped plate portion 22, the mesh material 25 for passing air, the slit 29a of the damper 29 at a position corresponding to the slit 22a, and the two openings 47a, 47a of the cylinder 40 are provided.
The ventilation path 65 through which air can flow is formed by the flow path 47 connecting the slits 22a and 29a and the slit 23a of the back plate portion 23 with a slit located at a position corresponding to the slits 22a and 29a. reference).

Since the air flows through the ventilation path 65 across the door 1, the inside of the entrance can be ventilated even when the door 1 is closed or, of course, when the door 1 is locked. That is, ventilation can be performed very safely from the viewpoint of crime prevention. Since there is no need to open the door 1 during ventilation, privacy protection is also realized.

Privacy protection is also considered in the following respects. That is, since the flow path 47 of the cylinder 40 has an S-shaped flat cross-sectional shape as shown in FIG. 1, even if the interior of the dwelling unit is viewed from the slit 22a of the casing 21 or the like, the bent portion of the flow path 47 The interior of the dwelling unit cannot be seen because it is shielded by the wing portion 46 forming 47c. Therefore, the privacy of residents is highly protected. In addition, it has the effect of blocking sound and light and the effect of preventing rainwater from entering.

In this embodiment, the flow path 47 is formed in an S-shape in plan view for the reason that the inside of the dwelling unit cannot be seen. However, the flow path 47 may be formed in a shape other than S-shape in plan view. Can obtain the same effect. For example, the shape of the flow path in plan view may be a meandering shape in which the number of meanders is larger or smaller than the S-shape. Alternatively, one of the openings 47a
, The flow path may be divided into two branches in a Y shape (in this case, the other end of the two divided flow paths may converge into one at the other opening 47a).

Further, in the plan view of the flow path 47, the bent portion 47c has a smooth curved shape. Opening 47a
In this example, the width of the horizontal section was slightly widened in the opening direction. Thereby, as is clear from the viewpoint of fluid dynamics, turbulence is reduced in the airflow flowing through the ventilation path 65, generation of eddies is prevented, and a smooth flow is realized. Therefore, the wind noise generated when the air flows is greatly reduced. In addition, the amount of air increases and efficient ventilation is realized.

Also, the air volume at the time of ventilation can be adjusted. That is, by operating the operation lever 55, the cylinder 40 is rotated counterclockwise (less than 90 °) so that the openings 47a, 47a of the cylinder 40 are turned into the slitted front plate portion 22 and the slitted back plate portion 23 of the casing 21. It is shifted from the position of. Since the area through which the air can flow in the openings 47a, 47a is narrowed by such a shift, the air flow of the air flowing through the ventilation path 65 can be adjusted to be reduced.

When it is not desired to perform ventilation (when it is not desired to take in outside air), the operating lever 55 may be operated to set the cylinder 40 to the shielding position. In other words, when the outer peripheral surface 46a of the blade portion 46 is aligned with the positions of the slit front plate portion 22 and the slit back plate portion 23 of the casing 21 by disposing the cylinder 40 at the shielding position, the ventilation path 65 is closed and ventilation is performed. There is no air flow through the device 20.

When a fire or the like occurs, the fixing bracket 30 formed of the thermal fuse shown in FIGS. 2 and 3 melts. Before the melting, the end 30a of the fixing bracket 30 is
9, the support of the damper 29 is released. As described above, since the lower end 29b of the damper 29 floats from the bottom 21a of the casing 21, the release of the fixed support causes the damper 29 to drop from the original open position OP to the closed position CP shown in FIG. 21a. By the way, since the lower end 29b of the damper 29 was separated from the bottom 21a of the casing 21 by the distance L2,
The damper 29 has dropped and moved for a distance L2. The distance L2 is half the distance L1 between the slits 22a of the front plate portion 22 with slits of the casing 21. In other words, the slit 29a of the damper 29 at the open position OP corresponds to the position of the slit 22a of the front plate portion 22 with a slit, and therefore the slit 29a of the damper 29 at the closed position CP.
As shown by the two-dot chain line in FIG. 2, a is located between the slits 22a, 22a of the slit-equipped front plate portion 22, and the slit 22a is provided with a corresponding closed portion 29t of the damper 29.

As described above, the slit 22a of the front plate portion 22 with slit is closed by the closing portion 29t of the damper 29, and the ventilation path 65 is shut off. That is, in the event of a fire, the inside and outside of the dwelling unit are closed, so that the safety is high. In the present embodiment, the damper 29 is fixedly supported by the fixing member 30 made of a thermal fuse, but the mechanism for causing the damper 29 to drop and move is not limited to this example. In addition, a structure in which the damper 29 is suspended by a thermal fuse,
A structure in which the lower end 29b is supported by a thermal fuse or the like is also possible. Alternatively, the fixing bracket 30 may be formed of a shape memory alloy, and the fixing bracket 30 may be bent and deformed in a direction away from the damper 29 when the temperature of the fixing bracket 30 becomes high during a fire. Alternatively, a sensor for detecting a high temperature at the time of a fire or the like, and a support /
An appropriate drive device (an actuator or the like) such as an electric motor for performing the support release drive may be provided.

In the above example, only one cylinder 40 is provided in the casing 21 for the sake of simplicity. For example, the cylinder is made half as large as the vertical length of the casing. It is also possible to prepare two and arrange them in a casing in two stages vertically. Of course, in addition to the two cylinders, three or more cylinders are also possible.

In the above example, the slit-equipped front plate portion 22 of the casing 21 is disposed outside the door (front of the door 1), and the slit-equipped back plate portion 23 of the casing 21 is disposed inside the door (the back of the door 1). May be reversed inside and outside. The above-described ventilator 20 may be attached at the time of manufacturing the door 1, or the ventilator 20 may be retrofitted by processing and forming the device installation part 6 on the existing door 1.

In the above example, the operation of the cylinder 40 is performed by the operation lever 55. However, an operation knob is used in place of the operation lever 55, and the operation knob is slid left and right or the shaft is rotated. The power from the operation knob is transferred to the cylinder 4 via appropriate power transmission means.
0 may be transmitted to move the cylinder 40.

FIG. 7 is a plan sectional view showing details around another type of ventilation device. Ventilation device 200 of the type of FIG.
Has almost the same structure as that of the above-described ventilator 20, and therefore, in FIG. The only difference between the ventilator 200 and the ventilator 20 is the shape of the blade of the cylinder 40. As shown in FIG. 7, the blade 460 of the ventilator 200 is formed so that the flow path 47 has an S-shape in plan view, but the bent part 470c has a square planar shape. The ventilator 200 can also provide substantially the same effect as the above-described ventilator 20, but in the case of the ventilator 200, the wind noise of the air flowing through the ventilation path 65 because the bent portion 470 c has an angular planar shape. Is larger than the ventilation device 20 described above. However, since the blade portion 460 can be formed in an angular shape, manufacturing becomes easy.

[Brief description of the drawings]

FIG. 1 is a plan sectional view showing details in the vicinity of a ventilation device.

FIG. 2 is a view as seen from an arrow I in FIG. 1;

FIG. 3 is a side sectional view of the ventilation device.

FIG. 4 is a side view schematically showing a cylinder.

FIG. 5 is a rear view schematically showing a damper.

FIG. 6 is a front view showing the entire door.

FIG. 7 is a cross-sectional plan view showing details near another type of ventilation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 2 Door main body (main body) 5 Lighting part (slit) 20 Ventilation device 21 Casing 22 Wall part (front plate part with a slit) 22a 1st air hole (slit) 23a 2nd air hole (slit) 29 Shielding member ( Damper) 29a Open hole (slit) 30 Support means (fixing fitting) 46 Blade member (blade portion) 47c Bent portion 60 Residential unit opening (entrance opening) 65 Air flow passage (ventilation path) 200 Ventilation device 460 Blade member (blade) Part)

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Ryoichi Misawa 1-11-8 Tsukuda, Chuo-ku, Tokyo Inside Misawa Associates Co., Ltd. (72) Satoshi Tetsuya 1-8-7 Ginza, Chuo-ku, Tokyo (72) Inventor Daisuke Goto 3-20-5 Kikukawa, Sumida-ku, Tokyo Joe Prince Takeshita Corporation Tokyo Branch F-term (reference) 2E036 JA03 JB03 JC03 KA06 KB01 LA06 LA07 LB05 MA03 MA08 NA07 3L081 AA04 AB01 EA03 HA09

Claims (8)

[Claims] 1. A ventilator installed on a door body capable of opening and closing an opening of a dwelling unit, wherein a casing is installed through the door body so as to penetrate the door body, and a casing is formed so as to penetrate one of the front and back walls of the casing. A first air hole, a second air hole opened on the other side of the casing, an air flow passage formed in the casing so as to connect the first and second air holes, A shielding member arranged along the wall portion and movably dropped from an open position to a closed position below, and supporting / releasing the shielding member with respect to the casing at the open position with respect to the casing according to temperature. Supporting means, wherein the shielding member is formed to penetrate the shielding member, and the opening is arranged corresponding to the first air hole in a state where the shielding member is arranged at the opening position. And the shielding member is in front A ventilating device comprising: a closing portion arranged in correspondence with the first air hole in a state where the ventilating portion is arranged in the closed position. 2. The ventilation according to claim 1, wherein said support means is a support fitting formed of a thermal fuse and supporting said shielding member at said open position with respect to said casing in a non-fused state. apparatus. 3. The support means is formed of a shape memory alloy, and is a support fitting for supporting and releasing the shielding member at the open position with respect to the casing by a deformation operation according to temperature. 2. The ventilation device according to claim 1, wherein 4. A blade member is provided in the casing, and the blade member is arranged such that the air flow passage has a meandering shape in a cross-sectional shape taken along a plane along a direction connecting the first and second air holes. The ventilation device according to claim 1, wherein: 5. The ventilation device according to claim 4, wherein the blade member is formed such that a cross-sectional shape of the bent portion of the air flow passage by the plane is curved. 6. The blade member according to claim 4, wherein said blade member is formed such that a width of said air flow passage increases toward said first and second air holes in a cross-sectional shape of said plane. Ventilation equipment. 7. A door comprising a door body capable of opening and closing a dwelling unit opening, wherein the ventilator according to claim 1 is installed in the door body. 8. The door according to claim 7, wherein the door body is provided with a lighting portion through which light can pass through the front and back of the door body.