JP2002115458A - Bay window unit and method for constructing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bay window unit, which has a separate roof and is constructed through simplified work in the construction field, and to provide a method for constructing the bay window unit. SOLUTION: The roof of the bay window is constructed, such that an eaves edge of a bay window roof component forming the bay window roof engages with a receiving member arranged on the front surface of a bay window body, and that a side surface of the bay window body abuts on the bay window roof component. Thus, the construction of the bay window roof is facilitated. With respect to mounting work of an soffit drip cap on a bay window soffit, the soffit drip cap is mounted via a mounting member which is arranged between the bay window body and the soffit drip cap, and therefore it is easily mounted on an accurate location.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bay window unit constituting a bay window provided so as to protrude from a frame of a building, and a method of constructing the bay window unit.

[0002]

2. Description of the Related Art Generally, when a bay window is provided, an independent roof is often provided on the bay window. However, providing an independent roof for the bay window requires a lot of time and labor for construction because the structure is complicated, and there is a demand for improvement in the workability of the bay window. To solve such a problem, Japanese Patent Application Laid-Open No. H10-306
In the technology described in Japanese Patent Publication No. 656, a configuration is adopted in which a bay window is provided at a position close to the eaves of a building, and a gutter cover at the eaves of the building roof is also used as the roof of the bay window.

[0003]

The above prior art has the following problems. According to the technology described in Japanese Patent Application Laid-Open No. H10-306656, instead of providing an independent roof for a bay window, the bay window is provided at a position reaching a height close to the eaves of a building. Can be The present invention has been made in view of the above problems, and an object of the present invention is to provide a bay window unit and a bay window unit construction method capable of simplifying construction of a bay window having a roof independently at a construction site.

[0004]

In order to solve the above-mentioned problems, the invention of claim 1 provides a bay window 2 which is provided to protrude outward from a frame 1 as shown in FIGS. 1, 3, 4, and 5, for example. In the bay window unit, the bay window main body 3 attached to the skeleton 1, the bay window roof component 4 attached to the upper portion of the bay window main body 3, and the eaves tip 41 of the bay window roof component 4 attached to the bay window main body 3. A receiving member 5 that engages with the bay window main body 3; the eaves tip 41 of the bay window roof component 4 is engaged with the receiving material 5 at the front surface of the bay window main body 3; 42 is the bay window main body 3
Are characterized in that they are in contact with the surfaces of the exterior materials 6 and 6 attached to the side surfaces of.

According to the first aspect of the present invention, the bay window main body 3 is provided.
A receiving member 5 is provided on the front surface of the bay window roof part 4.
Since the eaves tip 41 is engaged with the receiving member 5, the bay window roof part 4 can be easily locked to the bay window main body 3. At this time, since the side portions 42, 42 of the bay window roof part 4 are in contact with the surfaces of the exterior materials 6, 6 of the bay window main body 3, the bay window roof part 4 can move up and down. The operation of engaging the receiving member 4 with the receiving member 5 can be easily performed. Therefore, the bay window roof part 4 can be easily attached to the bay window main body 3, and the construction work can be reduced.

The bay window main body 3 is a member constituting a main part of the bay window 2. For example, there is a bay window main body 3 in which a frame is formed by a plurality of panels according to a window frame attached to the bay window 2. In some cases, the exterior material 6 is provided on the surface of the frame.

The bay window roof component 4 is a component forming a bay window roof that covers the upper surface of the bay window main body 3, and has a decorative effect on the appearance of the bay window 2 and a function of an eave.
Some have a sloping roof shape and others have a flat roof shape.

As shown in FIGS. 4 and 5, in the bay window unit according to the first aspect of the present invention, a back surface of a base end portion 44 of the bay window roof part 4 abutting on the frame 1 is provided. An adjusting member 7 is provided between the bayonet main body 3 and the upper surface of the base end of the bayonet main body 3 which comes into contact with the frame 1.

The adjusting member 7 is, for example, a long rectangular member.
It is made of a scrap of the exterior material, and is provided such that a long side extends along the base end of the bay window 2.

According to the invention of claim 2, the back surface of the base end portion 44 of the bay window roof part 4 abutting on the frame 1 and the upper surface of the base end of the bay window main body 3 abutting on the frame 1 are formed. Since the adjusting member 7 is provided therebetween, the bay window roof component 4 is stably supported, and the bay window roof component 4 can be easily attached to the bay window main body 3 and the frame 1. In addition, it has an effect as a reinforcing material against the force applied from the upper part of the bay window roof part 4. For example, even when a worker gets on the bay window roof part 4 during construction, the bay window roof part 4 is moved downward from a predetermined mounting position. To prevent slippage.

According to a third aspect of the present invention, as shown in FIGS. 3 and 7, in the bay window unit according to the first or second aspect, a lower end drainer 17 is provided at a lower end of the bay window main body 3. The lower end drainer 17 is provided along the edge.
Are attached to the lower edge of the bay window main body 3 via a plurality of mounting members 18, and the mounting members 18 are attached to the lower edge drainer 17 or the lower edge of the bay window main body 3 at predetermined intervals. It is characterized by having.

According to the third aspect of the present invention, the bay window main body 3 is provided.
Since the lower end draining material 17 is provided at the lower end along the lower end edge of the bay window main body 3, in the bay window 2 which is prone to rain because it protrudes from the frame 1, rainwater or the like is applied to the wall surface below the bay window 2. To prevent the wall surface from being stained or flooded. In addition, the lower end drainer 17
Are attached to the lower edge of the bay window main body 3 via a plurality of mounting members 18, and the mounting members 18 are attached to the lower edge drainer 17 or the lower edge of the bay window main body 3 at predetermined intervals. Therefore, the mounting position of the lower end drainer 17 does not shift or be distorted. Therefore, the work of attaching the lower end drainer 17 can be performed easily and accurately.

According to a fourth aspect of the present invention, in the bay window unit according to any one of the first to third aspects, the exterior material 6 is attached so as to cover the entire side surface of the bay window main body 3. I have.

According to the invention of claim 4, the exterior material 6
Is attached so as to cover the entire side surface of the bay window main body 3, so that the bay window roof part 4 covers the upper end of the exterior material 6 as shown in FIG. Never enter. Therefore, it is possible to more reliably prevent the bay window main body 3 from being flooded. Furthermore, the caulking work for waterproofing at the junction between the bay window roof part 4 and the bay window main body 3 can be simplified, and the construction work is reduced. Moreover, since the exterior material 6 covers the lower end of the side surface of the bay window main body 3, it is possible to prevent infiltration of rainwater or the like into the inside of the lower end of the bay window main body 3.

According to a fifth aspect of the present invention, in the method for constructing a bay window unit according to any one of the first to fourth aspects, first, the bay window main body 3 is attached to the frame 1, and then the bay window roof part 4 is attached. The bay window main body 3 is covered with the side surfaces 42, 42 of the bay window roof component 4 so as to abut against the surfaces of the exterior materials 6, 6, and then the bay window roof component 4 is covered with the eaves tip 41 of the bay window roof component 4. Is characterized by being engaged with the receiving member 5.

According to the invention of claim 5, first, the bay window main body 3 is attached to the frame 1, and then the bay window roof part 4 is attached to the bay window main body 3 by the side surfaces 42, 42 of the bay window roof part 4. Since the cover 42 is in contact with the exterior materials 6 and 6, if the bay window roof part 4 is put on the bay window main body 3, it can be easily guided to an appropriate mounting position. Next, since the bay window roof part 4 is engaged with the receiving material 5 at the eave part 41 thereof, the bay window roof part 4 is engaged with the receiving material 5 only at the eave part of the bay window 2. The bay window part 4 is easily attached. At this time, since the side portions 42, 42 of the bay window roof component 4 only abut the surfaces of the exterior materials 6, 6 of the bay window main body 3, the bay window roof component 4 can be moved up and down, and the bay window roof component 4 can be moved. The operation of engaging the receiving member 4 with the receiving member 5 can be easily performed. This can simplify the construction of the bay window 2 having a roof independently at a construction site.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a bay window unit according to the present invention will be described with reference to the drawings. FIG. 3 is an exploded perspective view showing an example of the embodiment of the bay window unit of the present invention.
In FIG. 3, reference numeral 3 denotes a bay window main body, reference numeral 4 denotes a bay window roof part, reference numeral 5 denotes a receiving member, reference numeral 6 denotes an exterior material, and reference numeral 17 denotes a lower end drainage material, and these constitute a main part of the bay window unit. .

As shown in the perspective view of the bay window main body 3 in FIG. 2 and the cross section of the upper end of the bay window unit in FIGS. 4 and 5, the bay window main body 3 is adapted to the size of the window frame attached to the bay window 2.
It is assembled in a rectangular frame by a roof panel 8, a floor panel 9, and side wall panels 10, 10. On the front side of this rectangular frame, a frame 11 made of four square members is attached. At the upper end of the front surface of the frame 11, a horizontal trunk edge 19 made of plywood is adhered along the upper portion of the frame 11, and the exterior material 6 is adhered to the surface. A waterproof sheet 22 is attached to the surface of the plywood 21 attached to the upper surface of the roof panel 8, and the waterproof sheet 22 is provided at the upper front end of the bay window main body 3 and the frame of the bay window main body 3. 11 and is stuck to the end of the frame 11 at the upper part of the front surface.
Vertical trunk edges 15, 15 are attached to the side surfaces of the bay window main body 3, and an exterior material 6 is attached to the entire surface of the side wall panels 10, 10 on the surface thereof. Further, at the protruding corner portion of the joint between the front portion and the side portion of the bay window main body 3, a protruding corner member 20 of the exterior material 6 is further attached.

As shown in FIG. 3, the bay window roof part 4 has an area covering the roof panel 8 of the bay window main body 3, and has a front inclined portion 46a inclined downward toward the front edge of the bay window main body 3. Bay window roof main body 4 which is composed of a sloping portion 46b and a sloping portion 46b sloping downward toward edges of both side surfaces.
6 and a side wall portion 47 formed continuously from the leading edge of the bay window roof main body 46. As shown in FIGS. 4 and 5, the side wall portion 47 forms a side surface continuously from the edge of the bay window roof body 46, and a groove 45 that opens outward is provided at the upper end thereof. I have.
The lower part of the groove 45 protrudes outward. And
Further below the protruding portion, it is bent inward at a right angle to form a horizontal lower end surface, and further bent vertically upward, the end of which is the bay window roof part 4.
The configuration differs between the eaves portion 41 and the side portions 42, 42. The eaves tip 41 is provided with an engaging portion 43 projecting in a hook shape inward of the bay window 2, whereas the side portions 42, 42 have a shape in which the ends extend vertically upward as they are. I have.

In addition, the front inclined portion 46 of the bay window roof main body 46.
A plywood 14 for reinforcing the front inclined portion 46a is attached to the back surface of a. Further, an adjusting member 7, which is a long rectangular member made of an end material of the exterior material, is provided along an end on the base end side of the plywood 14.

As shown in FIG. 4, the receiving member 5 is a member formed of a steel plate and having a substantially J-shaped cross section. The receiving member 5 has a groove that opens in a U-shape in the horizontal direction and a substantially U-shaped opening that opens upward. The groove is continuously and vertically opposed, and the end of the substantially U-shaped groove side is bent at an acute angle inward of the groove to form an engaging portion 51. The receiving member 5 has an upper end portion of the bay window main body 3 in contact with a horizontal torso edge 19 at the upper front surface and is attached to the frame body 11. The gap S provided between the back surface of the lower end of the receiving member 5 and the frame 11 serves as a groove into which the sash frame 25 is inserted.

The exterior member 6 is a member attached so as to cover the side surface and the front surface of the bay window main body 3, and is made of a plate-like material having fire resistance or the like, and is formed with a pattern for enhancing design. The exterior material 6 is attached to the horizontal waist edges 19, 19 or the vertical waist edges 15, 15.

The lower end drainer 17 is shown in FIGS. 3, 6, and 7.
As shown in (1), it is composed of one member formed so as to surround the three edges of the lower end of the bay window. The cross-section has a groove shape with an open top, and the front end of the groove extends inclining inward and upward, and the upper end extends vertically along the wall surface of the bay window main body 3. . On the other hand, the upper end of the groove on the rear side protrudes vertically to the rear side and extends along the lower surface of the bay window main body 3.

As shown in FIGS. 6, 7 and 8, the mounting member 18 is an auxiliary member for accurately and easily mounting the lower end drainer 17, and its two planes are perpendicular to each other and are L-shaped. The flat portion has a nail hole into which the nail 12 is driven. The mounting member 18 is attached to the lower end drainer 1
By providing a plurality of pieces at a predetermined interval inside 7, the mounting position of the lower end drainer 17 can be guided, and distortion of the mounting position can be prevented.

Next, a method of constructing the bay window unit of the present embodiment will be described. First, the bay window main body 3 previously formed in the factory is attached to the wall surface constituting the frame 1. At this time, as shown in FIG.
Is inserted into a predetermined position from the back surface of the wall surface of the wall panel 1 constituting the skeleton. On the side wall panel 10 on the contact surface side between the bay window main body 3 and the wall panel (frame body) 1, insertion holes (not shown) into which the coach screws 23 are screwed are attached to the left and right. , 23 are screwed together and the bay window main body 3 is attached to the frame 1, and is fixed with an adhesive and nails (not shown).

Next, the bay window roof part 4 is attached to the bay window main body 3. The bay window roof component 4 is placed from above the bay window main body 3 at both ends of the bay window main body 3 and the side portions 4 of the bay window roof component 4.
The upper surface of the bay window main body 3 is covered so as to be fitted at a position where the inside of the main window 2442 and the inner side of the main window 2442 are joined. Subsequently, the bay window roof part 4 is set to a position where the engagement part 51 of the receiving member 5 attached to the front part of the bay window main body 3 and the engagement part 43 of the eaves part 41 of the bay window roof part 4 come into contact with each other. Push it into the end 44 side,
At that position, while lifting the bay window roof part 4 upward,
Further, the engaging portion 43 of the bay window roof part 4 is engaged with the receiving member 5 by pushing. At this time, the bay window roof part 4
Since the adjusting member 7 is provided on the back surface of the base end portion 44, the base end portion 44 of the bay window roof component 4 may be shifted downward from a predetermined position due to the inclination angle of the upper surface of the bay window roof component 4. And can be easily attached. Then
The nail 12 is driven into a nail hole (not shown) provided at a predetermined interval in the groove 45 of the bay window roof part 4 from the outside, and the bay window roof part 4 is fixed to the bay window main body 3.

After the bay roof component 4 is fixed to the bay window main body 3, the base roof 44 of the bay roof component 4 is provided with the bay roof of the bay roof component 4 as shown in FIGS. A cover 48 that covers the side inclined portion 46b of the main body 46 and the uneven portion on the side surface is attached. At this time, the fixing member 16 is attached to a gap generated between the cover 48 and the side surface portions 42 of the bay window roof part 4. This cover 4
8 covers the base end 44 of the bay window roof part 4.
It is not necessary to cut the exterior material 24 of the wall panel (frame) 1 in accordance with the shape of the end on the base end portion 44 side of the bay window roof part 4, and the exterior material 24 of the wall panel (frame) 1 at the base end portion is not required. Can be easily mounted. Furthermore, the side part 4 of the bay window roof part 4 which is only in contact with the bay window main body 3
2 and 42, and the side portions 42 and 4 of the bay window roof part 4 are reinforced.
2 has an effect of preventing floating.

Next, as shown in FIGS. 7 and 8, 9 is attached to a predetermined position inside the lower end drainer 17 in advance.
The lower end drainer 17 is attached so as to sandwich the mounting members 18, and the lower end drainer 17 and the mounting member 1 are attached from outside.
8 is nailed to the lower end portion of the bay window main body 3 with a nail 12 through a nail hole provided in the hole 8 and fixed. Next, the exterior material 6 is attached to the horizontal trunk edge 19 that is previously attached to the lower end of the bay window main body 3. Therefore, the lower end drainer 17 on the front side of the bay window main body 3
The attachment member 18 is attached to the gap between the exterior material 6 and the bay window main body 3. By attaching the lower end drainer 17 in such a configuration, the joint surface between the lower end drainer 17 and the mounting member 18 is covered with the exterior material 6 and is not exposed to the outside. Is not flooded.

After the bay window unit has been mounted in this manner, the sealing material 13 is attached to the joint between the base end portion 44 of the bay window roof component 4 and the frame 1 or the side surfaces 42, 42 of the bay window roof component 4 are attached. The entire finishing process is appropriately performed such as applying caulking to each joint portion for waterproofing or the like, and the construction is completed.

According to the above embodiment, the side panels 10 and 1 of the bay window main body 3 are provided on both side surfaces of the bay window roof part 4.
0 so as to come into contact with the exterior material 6 provided on the entire surface of the
Since the upper part of the bay window main body 3 is covered, the bay window roof part 4 can be easily attached. Further, when the front portion is engaged with the receiving member 5, it does not shift left and right. Therefore, bay window roof part 4 can be easily attached to bay window main body 3.

As shown by a two-dot chain line in FIG. 5, unlike the embodiment of the present invention, for example, the side wall panels 10, 10 of the bay window main body 3 are also provided with receiving members 30 each having an engaging portion. In the case, the vertical trunk edge 15, attached to the side wall panels 10, 10,
15 and the exterior material 6 cut the upper part at the position of L in the figure,
The receiving member 30 comes into contact with the lower end surface. Then, it is necessary to perform caulking at the position indicated by the reference numeral 31 in order to prevent water intrusion in the contact portion. On the other hand, according to the example of the embodiment according to the present invention, since the bay window roof component 4 is configured to cover the upper end of the exterior material 6 of the bay window main body 3, the roof window component 4 covers the bay window roof component 4. Rainwater or the like does not enter from the upper end of the exterior material 6 and the bay window main body 3
It is possible to prevent the inside from being flooded. With such a configuration, it is possible to reduce the number of caulks on the contact surface between the exterior material 6 and the bay window roof part 4, and the construction work is reduced.

Further, since the inside of the corner of the attachment member 18 attached to the inside of the lower end drainage member 17 and the corner of the lower end of the bay window main body 3 come into contact with each other, the lower end of the drainage member 17 is attached by the attachment member 18. Is guided, and the lower end drainer 17 can be easily and accurately attached.

As described above, according to the example of the bay window unit, it is possible to easily construct a bay window in which the roof of the bay window is independently provided without being restricted by the installation position.

In the example of this embodiment, the bay window main body 3
Has a rectangular shape, but is not limited to this.
For example, the shape of the side surface is inclined inward, in short,
What is necessary is just to follow the shape of the window provided in the bay window 2.
Further, the bay window roof part 4 is made of steel plate, but is not limited to this, and it is only necessary that the part has water resistance. In addition, although the skeleton 1 to which the bay window unit is attached is a wall panel, the invention is not limited to this, and it may be a wall of the skeleton constructed by a general construction method, in other words, the bay window 2 can be attached to the wall constituting the skeleton. Any configuration may be used. Further, the shape of the receiving member 5 is also an example of the embodiment, and may be any as long as it has an engaging portion 51 for engaging the bay window roof part 4.

The mounting member 18 is connected to the lower end drainer 17.
Is provided at a position in contact with the bay window main body 3 inside, but is not limited to this. For example, a plurality of mounting members 18 may be provided at predetermined intervals at the lower end of the frame 11 of the bay window main body 3. In short, the mounting member 18 is provided between the lower end drainer 17 and the lower end of the bay window main body 3. The lower end drainer 17 may be attached to the lower end edge of the bay window main body 3 via 18.

[0036]

According to the first aspect of the present invention, the bay window roof component is engaged with the receiving member by the receiving member provided on the bay window main body, so that the bay window roof component can be easily attached to the bay window main body. it can. At this time, since the side portion of the bay window roof part is in contact with the exterior material of the bay window main body, the bay window roof part can be moved up and down, and the work of engaging the bay window roof part with the receiving material can be easily performed. I can do it. Therefore, the bay window roof part can be easily attached to the bay window main body,
Construction work can be reduced. Since the side portion of the bay window roof part abuts on the surface of the exterior material, rainwater or the like applied to the bay window roof component is waterproofed by the exterior material, and is prevented from being flooded inside the bay window main body. it can.

According to the second aspect of the present invention, the same effects as those of the first aspect can be obtained, and of course, the rear surface of the base end of the bay window roof part abutting on the skeleton and the skeleton can be provided. The bay roof component is stably supported by the adjusting member provided between the bay window main body and the upper surface of the base end of the bay window main body, and the bay roof component can be easily attached to the bay window main body and the frame. Further, the effect as a reinforcing material against the force applied from the upper part of the bay window roof component is obtained, and the bay window roof component does not shift downward from the predetermined mounting position.

According to the third aspect of the present invention, the same effect as in the first or second aspect can be obtained, and the lower end of the main body of the exit window is provided with a drainage material at the lower end. It is possible to prevent rainwater or the like from being transmitted to a lower wall surface, thereby preventing the wall surface from becoming dirty or flooded. Further, the lower end drainage material is attached to a lower end edge of the bay window main body via a plurality of mounting members, and the mounting member is attached to the lower end drainage material or a lower end edge of the bay window main body at a predetermined interval. As a result, the attachment position to the bay window main body can be easily known, and the attachment position of the lower end drainage material does not shift or be distorted. Therefore, the work of attaching the lower end drainer can be performed easily and accurately.

According to the fourth aspect of the present invention, the same effect as any one of the first to third aspects can be obtained, and the bay window roof part covers the upper end of the exterior material. Does not enter inside the exterior material. Therefore, it is possible to more reliably prevent the bay window main body from being flooded.
Furthermore, the caulking work for waterproofing at the joint between the bay window roof component and the bay window main body can be simplified, and the construction work is reduced. In addition, since the exterior material covers up to the lower end of the side surface of the bay window main body, it is possible to prevent infiltration of rainwater or the like into the lower end of the bay window main body.

According to the fifth aspect of the present invention, the same effect as any one of the first to fourth aspects can be obtained, and the bay window roof part can be connected to the bay window main body by the method of mounting the bay window unit. Can easily be guided to an appropriate mounting position. Further, at the eaves of the bay window, the bay window roof component can be easily attached only by engaging the bay window roof component with the exterior material. Also, when the bay window roof part is engaged with the receiving material, the bay window roof part can be moved up and down,
The work of engaging the bay window part with the receiving material can be easily performed. Therefore, it is possible to simplify the construction of the bay window where the roof is independently provided at the construction site.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a bay window using a bay window unit of the present invention.

FIG. 2 is a perspective view showing an example of a bay window main body of the bay window unit of the present invention.

FIG. 3 is an exploded perspective view of the bay window unit of the present invention.

FIG. 4 is a cross-sectional view showing an engagement portion between a bay window main body of the bay window unit of the present invention and an eaves portion of a bay window roof component.

FIG. 5 is a sectional view showing a contact portion between a bay window main body and a side surface of a bay window roof component of the bay window unit of the present invention.

FIG. 6 is a perspective view showing an example in which an attachment member is attached to a drainage material at the lower end of the bay window unit of the present invention.

FIG. 7 is a cross-sectional view showing how the lower end drainer and the mounting member of the bay window unit of the present invention are mounted.

FIG. 8 is a plan view showing a mounting position of a mounting member of the bay window unit of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2 Bay window 3 Bay window main body 4 Bay window roof part 5 Receiving material 6 Exterior material 7 Adjusting material 17 Lower end draining material 18 Mounting member 41 House front 42 Side surface 44 Base end

Claims (5)

[Claims] 1. A bay window unit that constitutes a bay window provided so as to protrude outward from a frame, comprising: a bay window main body attached to a frame; a bay window roof part attached to an upper portion of the bay window main body; A receiving material for engaging the eaves part of the bay window roof part with the bay window main body, wherein the eaves part of the bay window roof part is engaged with the receiving material at the front part of the bay window main body, and a side part of the bay window roof part is provided. A bay window unit, wherein the bay window unit is in contact with a surface of an exterior material attached to a side surface of the bay window main body. 2. The bay window unit according to claim 1, wherein a distance between a back surface of a base end of the bay window roof part abutting on the skeleton and an upper surface of a base end of the bay window main body abutting on the skeleton. A bay window unit provided with an adjusting material. 3. The bay window unit according to claim 1, wherein a bottom drainage material is provided at a lower end portion of the bay window main body along a lower edge of the bay window body, and the lower drainage material includes a plurality of mounting members. And a plurality of the attachment members are attached to the lower end drainer or the lower end edge of the bay window main body at predetermined intervals. 4. The bay window unit according to claim 1, wherein the exterior material is attached so as to cover an entire side surface of the bay window main body. 5. The bay window unit construction method according to claim 1, wherein the bay window main body is first attached to the skeleton, and then the bay window roof component is attached to the bay window main body. And covering the side wall portion so as to abut against the surface of the exterior material, and then engaging the bay window roof component with the receiving material at the eaves of the bay window roof component. .