JP2008156976A - Ventilation device to be mounted on window sliding screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation device capable of securing a cross-sectional area of circulation of a ventilation passage even when the vertical length is small. <P>SOLUTION: The ventilation device made of an extrusion mold material comprises a main body 10 having the ventilation passage for communicating the indoor side to the outdoor side, and an opening/closing means for opening and closing the ventilation passage. Screw hole members 40 are fixed to both ends of the main body 10, respectively, and the ventilation passage is formed between the pair of right and left screw hole members 40 so that the screw hole members 40 may overlap at least a part of the ventilation passage when seen from a longitudinal direction of the main body 10. The screw hole members 40 have screw holes 42a extending in the longitudinal direction of the main body 10. The main body 10 is fixed to a stile by driving a main screw 52 penetrating the stile into the screw holes 42a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a ventilation device attached to the upper edge of a window screen.

  As disclosed in Patent Document 1, a ventilation device attached to the upper edge of a window shoji is known. This type of ventilator includes an upper heel integrated type (a type that also serves as an upper heel) and an upper heel separate type (a type that is separated from the upper heel and is fitted into the upper heel). Both types of ventilation devices include a body made of an extruded mold that extends along the upper edge of the window screen. The main body has a ventilation passage that allows communication between indoor and outdoor, and the ventilation passage is opened and closed by an opening / closing means.

In the case of a ventilation device integrated with the upper heel, it is necessary to fix both ends of the main body to the upper end of the vertical fold of the window shoji. In addition, even in the case of a strong wind region, it is required that both ends of the main body be fixed to the vertical gutter even in the case of a separate upper type ventilation device.
Therefore, the main body has a screw hole portion, and the main body is fixed to the vertical rod by screwing the screw penetrating the upper end portion of the vertical rod into the end portion of the screw hole portion.
Japanese Utility Model Publication No. 6-76591

  By the way, since a main body consists of extrusion mold materials, the screw hole part is extended over the full length. When this screw hole part faces the ventilation passage, the flow cross-sectional area of the ventilation passage is reduced. Therefore, if it is going to secure the distribution cross-sectional area of a ventilation channel, it will be necessary to ensure an extra dimension only for the screw hole part, and the enlargement of a ventilator will be caused.

An example of the upper heel-integrated ventilation device will be described. This ventilation device requires a rail squeezing part and a shoji body squeezing part. A part of the ventilation passage is formed between the rail squeezing part and the shoji body squeezing part. Therefore, when a screw hole part is formed between the rail squeezing part and the shoji body squeezing part, the dimension between these squeezing parts must be increased in order to ensure the flow cross-sectional area of the ventilation passage. And the finding (vertical width) of the ventilator becomes larger by that amount.
Recently, from the viewpoint of the daylighting and design properties of window shoji, it has been required to make the ventilator smaller, but the above configuration cannot meet this requirement.

  In order to solve the above-mentioned problems, the present invention comprises a main body having a ventilation passage made of an extruded mold material extending along the upper edge of the window shoji and communicating indoors and outdoors, and an opening / closing means for opening and closing the ventilation passage of the main body. A ventilator in which both ends of the main body are fixed to the upper ends of the left and right vertical shafts of the window screen, screw hole members are respectively fixed to both ends of the main body, and the ventilation passage is formed between the pair of left and right screw hole members. When viewed from the longitudinal direction of the main body, at least a part of the screw hole member and the ventilation passage are overlapped, the screw hole member has a screw hole extending in the longitudinal direction of the main body, and the main screw penetrating the vertical gutter is The main body is fixed to the vertical shaft by being screwed into the screw hole.

  According to the above configuration, the screw hole portion that interferes with the ventilation passage by fixing the screw hole member that receives the main screw to both ends of the main body even if the main screw is attached to the ventilation passage when viewed from the longitudinal direction of the main body. Need not be formed on the main body. Therefore, it is possible to reduce the size of the ventilator while ensuring a sufficient cross-sectional area of the ventilation passage.

Preferably, a cap made of resin is further provided at both ends of the main body, and the cap projects from the end wall perpendicular to the longitudinal direction of the main body to the ventilation passage in the longitudinal direction of the main body. The cap receiving convex portion and the screw hole member have a receiving surface extending in the longitudinal direction of the main body and facing away from each other in a direction perpendicular to the longitudinal direction of the main body. The cap screw is attached to the main body by screwing the auxiliary screw that passes through the end wall of the cap and tapping the receiving surface between the receiving surface of the receiving convex portion of the cap and the receiving surface of the screw hole member. The main screw passes through the upper end of the vertical shaft and the end wall of the cap and is screwed into the screw hole of the screw hole member.
According to this configuration, in the ventilation device provided with the cap, it is not necessary to form a screw hole for receiving the auxiliary screw for attaching the cap in the screw hole member. Therefore, since the screw hole member can be reduced in size, the size of the ventilation passage can be minimized without being restricted by the screw hole member, and thus the ventilation device can be further reduced in size.

Preferably, the cap further has a locking projection extending in the longitudinal direction of the main body, and when the locking projection hits the main body, the cap moves in a direction perpendicular to the longitudinal direction of the main body when the auxiliary screw is screwed. It is forbidden to do.
According to this configuration, by prohibiting the cap movement, the interval between the receiving surface of the main body and the receiving surface of the cap does not widen, and tapping on both receiving surfaces of the auxiliary screw can be performed reliably.

Preferably, the main body is a shoji body squeezing part that accommodates the upper edge of the shoji of the window shoji, a rail squeezing part that accommodates the rail, and a front surface that is disposed on the indoor side of the rail squeezing part and has a vent hole. And the ventilation passage includes a first portion formed between the front wall and the indoor wall of the rail rubbing portion, an upper wall of the shoji body rubbing portion, and the rail rubbing portion. A second portion formed between the bottom wall and the opening and closing means, the opening and closing means having an opening and closing plate that is accommodated in the first portion of the ventilation passage and opens and closes the vent of the front wall. Are arranged at both ends of the second portion of the ventilation passage.
According to this configuration, even if the mounting position of the main screw overlaps with the second portion of the ventilation passage formed between the sliding body squeezing part and the rail squeezing part when viewed from the longitudinal direction of the main body, By using it, it is possible to reduce the finding (vertical width) of the ventilation device while sufficiently securing the flow cross-sectional area of the ventilation passage.

Preferably, both end portions of the rail rubbing portion of the main body protrude in the longitudinal direction of the main body from the shoji body rubbing portion, and the screw hole member is fixed to the lower surface of the end portion of the rail rubbing portion by a vertical fixing screw. And a cap made of resin disposed at both ends of the main body. The cap has an end wall perpendicular to the longitudinal direction of the main body, and the end wall of the cap corresponds to a rail entrainment portion of the main body. A notch is formed, and a projecting portion is formed to face the shoji body squeezing portion, and a receiving projection is formed on the upper surface of the projecting portion, and the receiving projection is disposed below the screw hole member. And the receiving convex portion of the cap and the screw hole member have a receiving surface that is opposed to each other and extends in the longitudinal direction of the main body, and passes through the end wall of the cap. The screw is screwed in while tapping both receiving surfaces between the receiving surface of the receiving projection of the cap and the receiving surface of the screw hole member through the end wall of the cap, so that the cap is attached to the main body. A screw penetrates the upper end of the vertical shaft and the end wall of the cap and is screwed into the screw hole of the screw hole member.
According to this configuration, in the ventilation device provided with the cap, it is not necessary to form a screw hole for receiving the auxiliary screw for attaching the cap in the screw hole member. Therefore, since the screw hole member can be reduced in size, the vertical dimension of the second portion of the ventilation passage can be minimized without being restricted by the screw hole member, and the vertical width of the ventilation device can be further reduced. Can do.

Preferably, the cap has a locking protrusion protruding in the longitudinal direction of the main body from the protruding portion of the cap in the vicinity of the receiving protrusion, and the locking protrusion is an upper surface of the obstacle body swallowing portion of the main body. This prevents the cap from moving downward when the auxiliary screw is screwed in.
According to this configuration, since the downward movement of the cap is prohibited, the interval between the receiving surface of the main body and the receiving surface of the cap is not widened, and tapping on both receiving surfaces of the sub screw can be performed reliably.

  According to the present invention, the size of the main body can be reduced by fixing the screw hole members to both ends of the main body instead of forming the screw holes in the main body.

  Hereinafter, a ventilating apparatus according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the ventilator 5 is an upper gill integrated type and also serves as an upper gutter of the window shoji 1, and both ends thereof are connected to the upper ends of the left and right vertical gutters 2 and 3 of the window shoji 1. Has been.

  As shown in FIG. 2, the ventilation device 5 includes a main body 10, and the main body 10 is configured by assembling first and second mold materials 11 and 12 made of an aluminum extrusion mold material.

  The first mold member 11 includes a shoji body squeezing portion 11a that squeezes the glass shoji 4 of the window shoji, a front wall 11b that stands up from the shoji body squeezing portion 11a and faces the indoor side, and an upper end of the front wall 11b. And a support connecting portion 11c protruding outward. A large number of vents 11x are formed in the front wall 11b with a space left and right.

The second mold member 12 has a rail squeezed part 12a that squeezes the rail 9 on the upper side of the window frame, and a back wall 12b that hangs down from the edge of the rail squeezed part 12 on the outdoor side. A large number of vent holes 12x are formed in the back wall 12b at intervals on the left and right.
The upper end of the indoor side wall of the rail squeezing part 12a of the second mold member 12 is fitted into the support connecting part 11c of the first mold member 11, and the lower end of the back wall 12b is fitted to the obstacle body squeezing part 11a of the first mold member 11. The second mold material 12 is connected to the first mold material 11 by fitting into the outer corners.

An internal space is formed between the first mold material 11 and the second mold material 12, and most of the internal space is provided as a ventilation passage 13. This ventilation passage 13 is connected to the indoor side ventilation hole 11x and the outdoor side ventilation hole 12x.
The ventilation passage 13 has an L-shaped cross section, and the vertical portion 13a (first portion) is between the front wall 11b of the first mold member 11 and the wall on the indoor side of the rail entrapment portion 12a of the second mold member 12. The lateral portion 13b (second portion) is formed between the upper wall of the shoji body squeezing portion 11a of the first mold member 11 and the bottom wall of the rail squeezing portion 12a of the second mold member 12. Yes.

A cover 14 is attached to the first mold member 11 so as to cover the indoor side surface of the front wall 11a. A large number of vent holes 14x are formed in the cover 14 at intervals in the longitudinal direction. A filter 15 is interposed between the cover 14 and the front wall 11a. Therefore, the vent 11x of the first mold member 11 is connected to the indoor space via the filter 15 and the vent 14x of the cover 14.
In order to help understanding, the flow of air between indoors and outdoors is indicated by arrows in FIG.

The horizontal portion 13b of the ventilation passage 13 is disposed between the shoji body squeezing portion 11a and the rail squeezing portion 12a, which are essential components, and the vertical dimension thereof determines the finding H (vertical width) of the entire ventilator 5. . In the present embodiment, the lateral portion 13b of the ventilation passage 13 has a dimension that is minimal or close to that, and the finding H of the ventilation device 5 is smaller than that of the prior art.
As a result, the finding H of the ventilator 5 can be made equal to the upper arm of the window shoji without the ventilator 5, so that the daylighting and the design can be improved.

  As shown in FIG. 1, a support plate 16 that is horizontally long is attached to the end of the first mold member 11, for example, the right end, covering the front wall 11 a and along with the cover 14. An operation knob 21 is supported on the support plate 16 so as to be slidable in the left-right direction. The operation knob 21 has a convex portion 21a that protrudes to the outdoor side.

  As shown in FIG. 2, an opening / closing plate 22 is accommodated in the vertical portion 13 a of the ventilation passage 13. The upper end shaft portion 22a of the opening / closing plate 22 is supported by the support connection portion 11c of the first mold member 11 so as to be rotatable and slidable in the axial direction. A hole is formed in the end of the opening / closing plate 22, and the convex portion 21 a of the operation knob 21 is fitted in the hole, so that the opening / closing plate 22 slides as the operation knob 21 slides. Yes.

  Protrusions (not shown) projecting downward are formed at, for example, two places on the lower edge of the opening / closing plate 22, and these projections are respectively inserted into inclined grooves formed on the upper surface of the cam member (not shown). Yes. As a result, when the opening / closing plate 22 slides in the axial direction as the operation knob 21 is slid in the left-right direction, the closed position in contact with the front wall 11b by the cam action of the projection and the inclined groove of the cam member, It swings between an open position away from the wall 11b.

  The operation knob 21, the opening / closing plate 22, and the cam member constitute an opening / closing means 20 for opening and closing the ventilation passage 13. Since the opening / closing means 20 is well known, detailed description thereof is omitted. Of course, as the opening / closing means, an opening / closing plate that slides in the longitudinal direction of the main body 10 while being in contact with the outdoor surface of the front wall 11b may be used instead of the swingable opening / closing plate 22.

  As shown in FIG. 1, a resin cap 30 is connected to both ends of the main body 10, and the vertical rods 2 and 3 are connected via the cap 30. The connection structure of the cap 30 and the vertical rods 2 and 3 will be described in detail below.

As shown in FIG. 8, both end portions of the second mold member 12 protrude in the longitudinal direction from the first mold member 11. Screw hole members 40 are attached to both ends of the second mold member 12.
The screw hole member 40 is made of a short aluminum extrusion mold material, and as shown best in FIGS. 9 and 10, a base portion 41 that is substantially horizontal, and a screw hole portion 42 that is connected to the indoor side edge of the base portion 41. A first rib 43 that rises from the edge of the base 41 on the outdoor side, a second rib 44 that stands from the middle of the base 41, and an engagement tongue that projects from the indoor side surface of the longitudinal middle of the screw hole 42. Part 45.

  The screw hole portion 42 has a screw hole 42a. In this embodiment, a plurality of protrusions are formed along the longitudinal direction on the inner periphery of the screw hole 42a, and a screw 52 (shown in FIGS. 1B and 4), which will be described later, is tapped in the screw hole 42a. While being screwed in. The screw hole 42a may have a female screw formed in advance.

  The screw hole member 40 is fixed to the second mold member 12 with its ends aligned. A part of the screw hole member 40 is covered with the first mold member 11 when viewed from the indoor side, and the remaining part protrudes from the first mold member 11 together with the second mold member 12.

  The fixing of the screw hole member 40 to the second mold member 12 will be described. As shown in FIGS. 9 and 10, the second rib 44 is notched at two locations, and a through hole 46 is formed in the base 41 corresponding to the notched locations. As shown in FIG. 3, a screw 50 (fixed screw) passes through the through hole 46 vertically from below and is screwed into the bottom wall of the rail squeezing portion 12 a of the second mold member 12. It is fixed to the bottom wall of the mold member 12.

  The left and right screw hole members 40 are fixed in the following order. First, the second mold member 12 is slid with respect to the first mold member 11 so that one end portion protrudes greatly, and one screw hole member 40 is fixed to the protruding end portion. Next, the second mold member 12 is slid until the one screw hole member 40 comes into contact with the cam member fixed by caulking in the locking groove 11d of the first mold member 11, thereby causing the other end to protrude greatly. The other screw hole member 40 is fixed to the end portion.

  A lateral portion 13 b of the ventilation passage 13 is formed between a pair of left and right screw hole members 40 fixed to both ends of the main body 10. In other words, when viewed from the longitudinal direction of the main body 10, the screw hole member 40 and the lateral portion 13 b of the ventilation passage 13 overlap each other.

  As shown in FIG. 3, the engagement tongue 45 of the screw hole member 40 is fitted in the engagement groove 11 d formed on the upper wall of the obstacle body squeezing portion 11 a of the first mold member 11. The screw hole member 40 is prevented from rotating when the member 40 is screwed.

As shown in FIGS. 5, 9, and 10, the cap 30 has an end wall 31 corresponding to the cross-sectional shape of the main body 10. The end wall 31 is connected to a projecting portion 32 facing the end face of the first mold member 11 against the obstacle body squeezing portion 11a and a projecting portion 33 facing the vertical portion 13a of the ventilation passage 13 and closing it. Is formed.
The portion of the end wall 31 where the protrusions 32 and 33 are not formed faces the second mold member 11 and abuts on the end surface thereof, and faces and blocks the lateral portion 13b of the ventilation passage 13. The end wall 31 is formed with a notch 31a corresponding to the rail entrainment portion 11a of the second mold member 11.

  As shown in FIGS. 9 and 10, two through holes 35 and 36 are formed in a portion of the end wall 31 of the cap 30 that faces the lateral portion 13 b of the ventilation passage 13. The through hole 35 is disposed near the center in the thickness direction (indoor / outdoor direction) of the main body 10, and the through hole 36 is disposed on the outdoor side.

As shown in FIG. 10, a receiving convex portion 37 extending in the longitudinal direction of the main body 10 is formed on the upper surface of the projecting portion 32 of the cap 30. The receiving projection 37 has a receiving surface 37a having a substantially semi-cylindrical surface shape. As shown in FIG. 6, the receiving surface 37 a faces the lower surface of the base portion 41 of the screw hole member 40 in a state where the cap 30 is attached to the main body 10. The lower surface of the base portion 41 is provided as a receiving surface 41a that performs an operation described later.
As shown in FIG. 6, a screw 51 (to be described later) is screwed between the receiving surfaces 37a and 41a.

  As shown in FIG. 10, the cap 30 has a locking protrusion 38 protruding from the protrusion 32 on the extension line of the receiving protrusion 37 (in the vicinity of the receiving protrusion 37). When the cap 30 is attached to the main body 10, the locking convex portion 38 hits the upper surface of the upper wall of the obstacle body squeezing portion 11 a of the main body 10. It is prohibited to move in the direction orthogonal to the longitudinal direction of the main body 10, that is, in the downward direction.

  The cap 30 is formed with various protrusions projecting in the longitudinal direction toward the main body 10, and these are for preventing the cap 30 from rotating relative to the main body 10. The explanation is omitted because it is not related.

The cap 30 is attached to both ends of the main body 10 in which the opening / closing means 20 is previously incorporated and the screw hole member 40 is fixed. At this time, as shown in FIGS. 4 to 6, the screw 51 (sub screw) is inserted into the through hole 36 of the cap 30 and further screwed. The screw 51 is screwed between the receiving surface 37 a of the receiving convex portion 37 of the cap 30 and the receiving surface 41 a of the base portion 41 of the screw hole member 40. Since the cap 30 is made of resin and the screw hole member 40 is made of aluminum, the screw 51 can be screwed in while tapping both the receiving surfaces 37a and 41a. Thereby, the cap 30 can be attached to both ends of the main body 10, and the assembly of the ventilation device 5 is completed.
If the screw hole member 40 is not fixed to the main body 10, the screw fixing operation of the cap 30 cannot be performed, so that forgetting to attach the screw hole member 40 can be reliably prevented.

  The window shoji 1 incorporating the ventilation device 5 is manufactured at a construction site or factory. Under the present circumstances, the upper end part of the vertical scissors 2 and 3 is fixed to the both ends of the ventilator 5 in the state which fitted the obturator body entraining part 11a of the ventilator 5. Specifically, the screw 52 (main screw) is inserted from a through hole formed in the upper end portion of the vertical shaft 2. The screw 52 passes through the through hole 35 of the cap 30 and reaches the screw hole 42 a of the screw hole member 40. When the screw 52 is screwed, the screw 52 is screwed while tapping the screw hole 42a. Thereby, the ventilator 5 as an upper rod is fixed to the upper ends of the vertical rods 2 and 3.

  In the ventilator 5 having the above-described configuration, when viewed from the longitudinal direction of the main body 10, even when screwed to the vertical rods 2 and 3 at a position overlapping the horizontal portion 13 b of the ventilation passage 13 of the main body 10, Instead of forming the screw hole portion facing the portion 13b in the main body 10, the screw hole members 40 are attached to both ends of the main body 10, so that the vertical dimension of the horizontal portion 13b can be increased without increasing the vertical dimension of the horizontal portion 13b. A sufficient cross-sectional area can be secured, and the finding H of the ventilation device 5 can be reduced.

The present invention is not limited to the above embodiment, and various forms can be adopted. For example, a female screw may be formed in advance in the screw hole of the screw hole member. The screw hole member may be made of metal such as steel harder than aluminum.
Instead of screwing the auxiliary screw 51 between the receiving surfaces 41a and 37a, the cap may be fixed to the screw hole member by screwing it into another screw hole formed in the screw hole member.
The cap may be omitted and the main body may be fixed to the vertical hook.
The screw hole member 40 may be fixed to the end portion of the first mold member 11. The screw hole member can be fixed to a surface extending in the longitudinal direction of the main body and facing the ventilation passage at the end of the main body.

The ventilator main body includes all the one constituted by one or a plurality of extrusion mold members.
The ventilator of the present invention can also be applied to a separate upper cage type. In this case, the shoji body swallowing portion is formed on the lower side, and the fitting portion to be fitted on the upper arm of the window shoji is formed on the upper side.

(A) is a front view of the upper end part of the window shoji incorporating the ventilation apparatus concerning this invention. (B) is a left side view of the same. It is II-II arrow sectional drawing in FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. It is a left view of the ventilator except a vertical fence. In the ventilation apparatus, it is sectional drawing which shows the relationship between a screw hole member, a cap, and the main screw. In the ventilation apparatus, it is an enlarged bottom view of the 2nd mold material of the main body which attached the screw hole member. It is an enlarged front view which decomposes | disassembles and shows a main body and a cap in the ventilation apparatus. It is the disassembled perspective view which looked at the screw hole member and cap of the ventilation apparatus from the indoor direction. It is the disassembled perspective view which looked at the screw hole member and cap of the ventilation apparatus from the outdoor direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Window shoji 2, 3 Longitudinal shaft 4 Shoji body 5 Ventilation device 9 Rail 10 Main body 11a The shoji body entrapment part 11b Front wall 12a Rail entrapment part 13 Ventilation passage 13a The vertical part (1st part) of a ventilation passage
13b Lateral part of ventilation passage (second part)
30 Cap 31 End wall 32 Protruding portion 35, 36 Through hole 37 Receiving convex portion 37a Receiving surface 40 Screw hole member 41a Receiving surface 42 Screw hole portion 42a Screw hole 50 Screw (fixed screw)
51 screw (sub screw)
52 Screw (Main screw)

Claims (6)

A main body having a ventilation passage made of an extruded mold extending along the upper edge of the window screen and having an indoor and outdoor communication, and an opening / closing means for opening and closing the ventilation passage of the main body. In the ventilation device fixed to the upper end of the downspout,
Screw hole members are fixed to both ends of the main body, the ventilation passage is formed between the pair of left and right screw hole members, and when viewed from the longitudinal direction of the main body, at least a part of the screw hole member and the ventilation passage overlap. ,
The ventilator characterized in that the screw hole member has a screw hole extending in the longitudinal direction of the main body, and the main screw passing through the vertical hook is screwed into the screw hole so that the main body is fixed to the vertical hook. Furthermore, it is provided with resin caps arranged at both ends of the main body, and the cap includes an end wall orthogonal to the longitudinal direction of the main body and a receiving convex portion protruding from the end wall toward the ventilation passage in the longitudinal direction of the main body. Have
The receiving convex portion of the cap and the screw hole member have a receiving surface extending in the longitudinal direction of the main body while facing away from each other in a direction orthogonal to the longitudinal direction of the main body,
By screwing the auxiliary screw penetrating the end wall of the cap through the end wall of the cap and tapping both receiving surfaces between the receiving surface of the receiving convex portion of the cap and the receiving surface of the screw hole member, The cap is attached to the main body,
The ventilator according to claim 1, wherein the main screw passes through an upper end portion of the vertical shaft and an end wall of the cap and is screwed into a screw hole of the screw hole member.   The cap further has a locking projection extending in the longitudinal direction of the main body. When the locking projection hits the main body, the cap moves in a direction perpendicular to the longitudinal direction of the main body when the auxiliary screw is screwed. The ventilator according to claim 2, wherein the ventilator is forbidden. The main body includes a shoji body squeezing portion that accommodates the upper edge of the shoji of the window shoji, a rail squeezing portion that accommodates the rail, and a front wall that is disposed on the indoor side of the rail squeezing portion and has a vent hole. Have
The ventilation passage is between a first portion formed between the front wall and the wall on the indoor side of the rail rubbing portion, and an upper wall of the shoji body rubbing portion and a bottom wall of the rail rubbing portion. A second portion formed,
The opening / closing means has an opening / closing plate that is accommodated in the first portion of the ventilation passage and opens and closes the vent of the front wall,
The ventilator according to claim 1, wherein the screw hole member is disposed at both ends of the second portion of the ventilation passage. Both end portions of the rail rubbing portion of the main body protrude in the longitudinal direction of the main body from the obstacle body rubbing portion, and a screw hole member is fixed to the lower surface of the end portion of the rail rubbing portion by a vertical fixing screw,
Furthermore, it comprises a resin cap disposed at both ends of the main body, this cap has an end wall perpendicular to the longitudinal direction of the main body,
The end wall of the cap is formed with a notch corresponding to the rail squeezing part of the main body, and a protruding part is formed to face the shoji body squeezing part, and a receiving convex part is formed on the upper surface of the protruding part. , The receiving projection is disposed below the screw hole member,
The receiving convex portion of the cap and the screw hole member have a receiving surface that faces away from each other and extends in the longitudinal direction of the main body,
By screwing the auxiliary screw penetrating the end wall of the cap through the end wall of the cap and tapping both receiving surfaces between the receiving surface of the receiving convex portion of the cap and the receiving surface of the screw hole member, The cap is attached to the main body,
The ventilator according to claim 4, wherein the main screw passes through an upper end portion of the vertical shaft and an end wall of the cap and is screwed into a screw hole of the screw hole member.   The cap has a locking projection that protrudes in the longitudinal direction of the main body from the protruding portion of the cap in the vicinity of the receiving projection, and the locking projection hits the upper surface of the main body shoveling portion of the main body. The ventilator according to claim 5, wherein the cap is prohibited from moving downward when the auxiliary screw is screwed.

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