Bay window structure reserving interior space and bay window interior decoration system

Abstract

This utility model relates to a bay window structure with reserved interior space and an interior decoration system for the bay window. The bay window structure includes an opening unit, a first cantilever unit, a second cantilever unit, a third cantilever unit, a shielding unit, a cavity unit, and a window unit. The opening unit is located on the exterior wall of the building. The first cantilever unit is located at the bottom of the exterior of the opening unit. The second cantilever unit is located at the top of the exterior of the opening unit. The third cantilever unit is located outside the second cantilever unit. The shielding unit is located at the top of the interior of the opening unit. The cavity unit is located between the shielding unit and the third cantilever unit. The window unit is located between the first cantilever unit and the third cantilever unit. Its advantage is that by setting an L-shaped third cantilever unit below the second cantilever unit to form a cavity for installing lighting devices and sliding rail devices, the problems of installing curtain tracks, lighting equipment, and decorative panels on the top of the existing bay window affecting the opening of the bay window sash are solved.

Description

Technical Field

[0001] This utility model relates to the field of architectural design technology, and in particular to a bay window structure with reserved interior space and a bay window interior decoration system. Background Technology

[0002] A bay window is an architectural design element, usually referring to a window structure that protrudes outward from the wall. It can increase interior space and provide additional usable area, and is therefore widely used in residential buildings.

[0003] To maximize the use of bay window space, curtain tracks are typically installed at the top of the bay window during renovation. However, with existing bay window frames installed directly under the top, some curtain tracks, especially those that are quite high, can interfere with the opening of the bay window's operable sash. Additionally, some homeowners install lighting fixtures at the top of the bay window for nighttime use. The wiring and protective structure for these lighting fixtures usually require additional decorative panels for concealment, which can also affect the opening of the bay window's operable sash.

[0004] To meet fire safety requirements, there needs to be a certain distance between exterior windows on different floors, and decorative structures are generally required to enclose the external cavity between upper and lower bay window panels.

[0005] Currently, no effective solutions have been proposed for the problems existing in related technologies, such as the installation of curtain tracks, lighting equipment, and decorative panels on the top of bay windows affecting the opening of the bay window sash. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by providing a bay window structure with reserved interior space and a bay window interior decoration system, so as to solve the problems in related technologies such as the installation of curtain tracks, lighting equipment, and decorative panels on the top plate of existing bay windows affecting the opening of the bay window sash.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] Firstly, a bay window structure is provided for residential buildings, including:

[0009] An opening unit, wherein the opening unit is disposed on the exterior wall of the building;

[0010] The first cantilever unit is located at the bottom outside the opening unit and is connected to the building's exterior wall. The top surface of the first cantilever unit is coplanar with the bottom surface of the opening unit.

[0011] The second cantilever unit is located at the top outside the opening unit and is connected to the building's exterior wall. The bottom surface of the second cantilever unit is coplanar with the top surface of the opening unit, and the outer side of the second cantilever unit is located inside the first cantilever unit.

[0012] The third cantilever unit is disposed outside the second cantilever unit and connected to the second cantilever unit. The outer side of the third cantilever unit is coplanar with the outer side of the first cantilever unit. The bottom surface of the third cantilever unit is lower than the top surface of the opening unit.

[0013] A shielding unit is disposed at the top inside the opening unit and connected to the building's exterior wall. The bottom surface of the shielding unit is coplanar with the bottom surface of the third cantilever unit.

[0014] A cavity unit is disposed between the shielding unit and the third cantilever unit, and a lighting device and a sliding rail device are installed inside the cavity unit;

[0015] A window unit is disposed between the first cantilever unit and the third cantilever unit, and is connected to the outer end of the first cantilever unit and the outer end of the third cantilever unit, respectively.

[0016] In some embodiments, the opening unit includes:

[0017] An opening element is provided on the exterior wall of a building. The bottom of the opening element is provided with a first cantilever unit, the top of the opening element is provided with a second cantilever unit, and the top of the opening element is provided with a shielding unit.

[0018] In some embodiments, the first cantilever unit includes:

[0019] The first cantilever element is disposed at the bottom outside the opening unit and connected to the building exterior wall. The top surface of the first cantilever element is coplanar with the bottom surface of the opening unit, and the top of the outer end of the first cantilever element is connected to the window unit.

[0020] The first insulation element is disposed covering the bottom surface of the first cantilever element.

[0021] In some embodiments, the second cantilever unit includes:

[0022] The second cantilever element is disposed at the top of the outside of the opening unit and connected to the building exterior wall. The bottom surface of the second cantilever element is coplanar with the top surface of the opening unit. The outer side of the second cantilever element is located inside the first cantilever unit. The third cantilever unit is disposed at the outer end of the second cantilever element.

[0023] The second insulation element is disposed covering the top surface of the second cantilever element.

[0024] In some embodiments, the third cantilever unit includes:

[0025] A wall element is disposed on the outside of the second cantilever unit and connected to the second cantilever unit, wherein the bottom surface of the wall element is lower than the top surface of the opening unit;

[0026] The third cantilever element is disposed at the outer bottom end of the wall element. The outer side of the third cantilever element is coplanar with the outer side of the first cantilever unit. The bottom surface of the third cantilever element is coplanar with the bottom surface of the shielding unit. The bottom of the outer end of the third cantilever element is connected to the window unit.

[0027] The third insulation element is provided to cover the outer side of the wall element.

[0028] In some embodiments, the occlusion unit includes:

[0029] A shielding element is disposed at the top of the interior of the opening unit and connected to the exterior wall of the building. The bottom surface of the shielding element is coplanar with the bottom surface of the third cantilever unit.

[0030] In some of these embodiments, it also includes:

[0031] A protective unit is disposed on the top of the third cantilever unit and is connected to the top outer end of the third cantilever unit and the bottom outer end of the first cantilever unit of the other bay window structure, respectively, for protection.

[0032] Secondly, a bay window interior decoration system is provided for residential buildings, including:

[0033] The bay window structure as described in the first aspect;

[0034] A lighting device is disposed inside the cavity unit of the bay window structure and connected to the second cantilever unit of the bay window structure;

[0035] A sliding rail device is disposed inside the cavity unit of the bay window structure and connected to the second cantilever unit of the bay window structure for installing curtains.

[0036] In some of these embodiments, it also includes:

[0037] A decorative structure is disposed below the cavity unit and connected to the second cantilever unit, for use in shielding the lighting device.

[0038] In some embodiments, the decorative structure includes:

[0039] A decorative unit is disposed below the cavity unit and connected to the second cantilever unit, for use in shielding the lighting device;

[0040] A heat insulation unit is disposed between the lighting device and the slide rail device and is connected to the second cantilever unit to isolate the lighting device from the slide rail device.

[0041] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0042] This utility model discloses a bay window structure with reserved interior space and an interior decoration system for bay windows. By setting an L-shaped third cantilever unit below the second cantilever unit, a cavity is formed between the second cantilever unit, the third cantilever unit, and the shielding unit to install lighting devices and sliding rail devices. This can meet the fireproof distance requirements of the upper and lower exterior windows, while the lighting devices and sliding rail devices will not affect the opening of the window unit. It solves the problems of existing bay window top panels affecting the opening of the bay window sash due to the installation of curtain tracks, lighting equipment, and decorative panels. Attached Figure Description

[0043] Figure 1 This is a schematic diagram (a) of the bay window structure according to an embodiment of the present utility model;

[0044] Figure 2 This is a schematic diagram of the opening unit according to an embodiment of the present utility model;

[0045] Figure 3 This is a schematic diagram of the first cantilever unit according to an embodiment of the present utility model;

[0046] Figure 4 This is a schematic diagram of the second cantilever unit according to an embodiment of the present utility model;

[0047] Figure 5 This is a schematic diagram of the third cantilever unit according to an embodiment of the present utility model;

[0048] Figure 6This is a schematic diagram of the shielding unit according to an embodiment of the present utility model;

[0049] Figure 7 This is a schematic diagram (II) of the bay window structure according to an embodiment of the present utility model;

[0050] Figure 8 This is a schematic diagram (a) of the interior decoration system of the bay window according to an embodiment of the present utility model;

[0051] Figure 9 This is a schematic diagram (II) of the interior decoration system for a bay window according to an embodiment of the present utility model;

[0052] Figure 10 This is a schematic diagram of the decorative structure according to an embodiment of the present utility model.

[0053] The attached diagram is labeled as follows: 100, bay window structure;

[0054] 110. Opening unit; 111. Opening element;

[0055] 120. First cantilever unit; 121. First cantilever element; 122. First insulation element;

[0056] 130. Second cantilever unit; 131. Second cantilever element; 132. Second insulation element;

[0057] 140. Third cantilever unit; 141. Wall component; 142. Third cantilever component; 143. Third insulation component;

[0058] 150. Blocking unit; 151. Blocking element;

[0059] 160. Cavity unit;

[0060] 170. Window unit;

[0061] 180. Protective Unit;

[0062] 200. Lighting device;

[0063] 300. Slide rail device;

[0064] 400. Decorative structure; 410. Decorative unit; 420. Thermal insulation unit. Detailed Implementation

[0065] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0066] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0067] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0068] Example 1

[0069] This embodiment relates to the bay window structure of this utility model.

[0070] An illustrative embodiment of this utility model, such as Figure 1 As shown, a bay window structure 100 for residential buildings includes an opening unit 110, a first cantilever unit 120, a second cantilever unit 130, a third cantilever unit 140, a shielding unit 150, a cavity unit 160, and a window unit 170. The opening unit 110 is located on the exterior wall of the building; the first cantilever unit 120 is located at the bottom of the exterior of the opening unit 110 and connected to the exterior wall, with its top surface coplanar with the bottom surface of the opening unit 110; the second cantilever unit 130 is located at the top of the exterior of the opening unit 110 and connected to the exterior wall, with its bottom surface coplanar with the top surface of the opening unit 110, and its outer surface located inside the first cantilever unit 120; the third cantilever unit 140 is located outside the second cantilever unit 130 and connected to it, with its outer surface... The side surface of the third cantilever unit 140 is coplanar with the outer surface of the first cantilever unit 120, and the bottom surface of the third cantilever unit 140 is lower than the top surface of the opening unit 110. The shielding unit 150 is located at the top inside the opening unit 110 and is connected to the building's exterior wall. The bottom surface of the shielding unit 150 is coplanar with the bottom surface of the third cantilever unit 140. The cavity unit 160 is located between the shielding unit 150 and the third cantilever unit 140. The cavity unit 160 is equipped with a lighting device and a sliding rail device. The window unit 170 is located between the first cantilever unit 120 and the third cantilever unit 140 and is connected to the outer ends of the first cantilever unit 120 and the third cantilever unit 140, respectively.

[0071] In some of these embodiments, the cavity unit 160 has a rectangular cross-section.

[0072] In some of these embodiments, the window unit 170 has a rectangular cross-section.

[0073] In some of these embodiments, window unit 170 is a thermally broken metal profile window.

[0074] like Figure 2 As shown, the opening unit 110 includes an opening element 111. The opening element 111 is disposed on the exterior wall of the building. A first cantilever unit 120 is disposed at the bottom of the exterior of the opening element 111, a second cantilever unit 130 is disposed at the top of the exterior of the opening element 111, and a shielding unit 150 is disposed at the top of the interior of the opening element 111.

[0075] The dimensions of the opening element 111 are matched with the dimensions of the window unit 170. Generally, the height of the opening element 111 is greater than the height of the window unit 170, and the width of the opening element 111 is equal to the width of the window unit 170.

[0076] In some of these embodiments, the opening element 111 has a rectangular cross-section.

[0077] The opening unit 110 also includes two sealing plate elements. The two sealing plate elements are respectively disposed on both sides of the opening unit 111 and connected to the building exterior wall. The two sealing plate elements are respectively connected to the first cantilever unit 120, the second cantilever unit 130, the third cantilever unit 140, and the window unit 170.

[0078] The dimensions of the sealing element are matched with the dimensions of the opening element 111. Generally, the height of the sealing element is greater than the height of the opening element 111.

[0079] In some of these embodiments, the width of the sealing element is 600 mm.

[0080] In some of these embodiments, the sealing element is a bay window side wall panel.

[0081] like Figure 3 As shown, the first cantilever unit 120 includes a first cantilever element 121 and a first thermal insulation element 122. The first cantilever element 121 is disposed at the bottom of the outside of the opening unit 110 and is connected to the building's exterior wall. The top surface of the first cantilever element 121 is coplanar with the bottom surface of the opening unit 110, and the top of the outer end of the first cantilever element 121 is connected to the window unit 170. The first thermal insulation element 122 is disposed covering the bottom surface of the first cantilever element 121.

[0082] Specifically, the first cantilever element 121 is disposed at the bottom outside the opening element 111, the top surface of the first cantilever element 121 is coplanar with the bottom surface of the opening element 111, and the ends of the first cantilever element 121 are respectively connected to the two sealing plate elements.

[0083] The dimensions of the first cantilever element 121 are matched with the dimensions of the opening element 111. Generally, the length of the first cantilever element 121 is equal to the width of the opening element 111.

[0084] The dimensions of the first cantilever element 121 are matched with the dimensions of the sealing element. Generally, the width of the first cantilever element 121 is equal to the width of the sealing element.

[0085] In some of these embodiments, the first cantilever element 121 has a rectangular cross-section.

[0086] In some of these embodiments, the first cantilever element 121 is a concrete cantilever slab.

[0087] In some of these embodiments, the first insulation element 122 is connected to the first cantilever element 121 via a metal connector.

[0088] The dimensions of the first insulation element 122 are matched with the dimensions of the first cantilever element 121. Generally, the width of the first insulation element 122 is equal to the width of the first cantilever element 121, and the length of the first insulation element 122 is equal to the length of the first cantilever element 121.

[0089] In some of these embodiments, the first insulation element 122 includes, but is not limited to, an insulation rock wool board.

[0090] like Figure 4 As shown, the second cantilever unit 130 includes a second cantilever element 131 and a second insulation element 132. The second cantilever element 131 is disposed on the top of the exterior of the opening unit 110 and connected to the building's exterior wall. The bottom surface of the second cantilever element 131 is coplanar with the top surface of the opening unit 110. The outer side of the second cantilever element 131 is located inside the first cantilever unit 120. A third cantilever unit 140 is disposed at the outer end of the second cantilever element 131. The second insulation element 132 covers the top surface of the second cantilever element 131.

[0091] Specifically, the second cantilever element 131 is disposed on the top outside of the opening element 111; the bottom surface of the second cantilever element 131 is coplanar with the top surface of the opening element 111, the ends of the second cantilever element 131 are respectively connected to the two sealing plate elements, and the outer side of the second cantilever element 131 is located inside the first cantilever element 121.

[0092] The dimensions of the second cantilever element 131 are matched with the dimensions of the opening element 111. Generally, the length of the second cantilever element 131 is equal to the width of the opening element 111.

[0093] The dimensions of the second cantilever element 131 are matched with the dimensions of the first cantilever element 121. Generally, the width of the second cantilever element 131 is smaller than the width of the first cantilever element 121.

[0094] In some of these embodiments, the second cantilever element 131 has a rectangular cross-section.

[0095] In some of these embodiments, the second cantilever element 131 is a concrete cantilever slab.

[0096] In some of these embodiments, the second insulation element 132 is connected to the second cantilever element 131 via a metal connector.

[0097] The dimensions of the second insulation element 132 are matched with the dimensions of the second cantilever element 131. Generally, the width of the second insulation element 132 is equal to the width of the second cantilever element 131, and the length of the second insulation element 132 is equal to the length of the second cantilever element 131.

[0098] In some of these embodiments, the second insulation element 132 includes, but is not limited to, an insulation rock wool board.

[0099] like Figure 5 As shown, the third cantilever unit 140 includes a wall element 141, a third cantilever element 142, and a third insulation element 143. The wall element 141 is located outside and connected to the second cantilever unit 130, with its bottom surface lower than the top surface of the opening unit 110. The third cantilever element 142 is located at the bottom outer end of the wall element 141, with its outer surface coplanar with the outer surface of the first cantilever unit 120 and its bottom surface coplanar with the bottom surface of the shielding unit 150. The bottom outer end of the third cantilever element 142 is connected to the window unit 170. The third insulation element 143 covers the outer surface of the wall element 141.

[0100] Specifically, the wall element 141 is disposed on the outside of the second cantilever element 131 and connected to the second cantilever element 131, and the bottom surface of the wall element 141 is lower than the top surface of the opening element 111; the outer side of the third cantilever element 142 is coplanar with the outer side of the first cantilever element 121; the third insulation element 143 is connected to the second insulation element 132.

[0101] In some of these embodiments, the wall element 141 is integrally formed with the second cantilever element 131.

[0102] The dimensions of the wall element 141 are matched with the dimensions of the second cantilever element 131. Generally, the length of the wall element 141 is equal to the length of the second cantilever element 131, and the thickness of the wall element 141 is equal to the thickness of the second cantilever element 131.

[0103] In some of these embodiments, the wall element 141 is a concrete slab.

[0104] The third cantilever element 142 is integrally formed with the wall element 141.

[0105] The dimensions of the third cantilever element 142 are matched with the dimensions of the second cantilever element 131. Generally, the width of the third cantilever element 142 is equal to the difference between the width of the first cantilever element 121 and the width of the second cantilever element 131.

[0106] In some of these embodiments, the third cantilever element 142 has a rectangular cross-section.

[0107] In some of these embodiments, the third cantilever element 142 is a concrete cantilever slab.

[0108] The third insulation element 143 is integrally formed with the second insulation element 132.

[0109] The dimensions of the third insulation element 143 are matched with the dimensions of the third cantilever element 142. Generally, the thickness of the third insulation element 143 is less than the distance from the outer side of the third cantilever element 142 to the outer side of the wall element 141.

[0110] In some of these embodiments, the third insulation element 143 includes, but is not limited to, insulation rock wool board.

[0111] like Figure 6 As shown, the shielding unit 150 includes a shielding element 151. The shielding element 151 is disposed at the top inside the opening unit 110 and connected to the building's exterior wall. The bottom surface of the shielding element 151 is coplanar with the bottom surface of the third cantilever unit 140.

[0112] Specifically, the shielding element 151 is disposed at the top inside the opening element 111, and the bottom surface of the shielding element 151 is coplanar with the bottom surface of the third cantilever element 142.

[0113] In some of these embodiments, the shielding element 151 is integrally formed with the building exterior wall.

[0114] The dimensions of the blocking element 151 are matched with the dimensions of the opening element 111. Generally, the length of the blocking element 151 is equal to the width of the opening element 111.

[0115] In some of these embodiments, the shielding element 151 has a rectangular cross-section.

[0116] In some of these embodiments, the shielding element 151 is a concrete structural beam.

[0117] The advantage of this embodiment is that by setting an L-shaped third cantilever unit below the second cantilever unit, a cavity is formed between the second cantilever unit, the third cantilever unit, and the shielding unit to install lighting devices and sliding rail devices. This can meet the fire-resistant distance requirements of the upper and lower exterior windows, while the lighting devices and sliding rail devices will not affect the opening of the window unit. This solves the problems of existing bay window top panels affecting the opening of the bay window sash by installing curtain tracks, lighting equipment, and decorative panels.

[0118] Example 2

[0119] like Figure 7 As shown, the bay window structure 100 also includes a protective unit 180. The protective unit 180 is disposed on the top of the third cantilever unit 140 and is connected to the top outer end of the third cantilever unit 140 and the bottom outer end of the first cantilever unit 120 of the other bay window structure 100, respectively, for protection.

[0120] Specifically, the protective unit 180 is connected to the top of the outer end of the third cantilever element 142 and the bottom of the outer end of the other first cantilever element 121.

[0121] In some of these embodiments, the protective unit 180 is connected to the third cantilever element 142 and the first cantilever element 121 via metal connectors.

[0122] In some of these embodiments, the protective unit 180 includes, but is not limited to, decorative metal panels, decorative louvers, glass curtain walls, etc.

[0123] The advantage of this embodiment is that by setting up a protective unit, rainwater can be prevented from contacting the first cantilever unit and the second cantilever unit, thereby improving the waterproof performance of the bay window structure.

[0124] Example 3

[0125] This embodiment relates to the interior decoration system for bay windows of this utility model.

[0126] Figure 8 As shown, a bay window interior decoration system for residential buildings includes a bay window structure 100, a lighting device 200, and a sliding rail device 300 as described in Embodiments 1 and 2. The lighting device 200 is disposed inside the cavity unit 160 of the bay window structure 100 and connected to the second cantilever unit 130 of the bay window structure 100; the sliding rail device 300 is disposed inside the cavity unit 160 of the bay window structure 100 and connected to the second cantilever unit 130 of the bay window structure 100, and is used for installing curtains.

[0127] Specifically, the lighting device 200 is connected to the second cantilever element 131; the slide rail device 300 is connected to the second cantilever element 131.

[0128] In some of these embodiments, the lighting device 200 is connected to the second cantilever element 131 by expansion screws.

[0129] In some of these embodiments, the lighting device 200 includes, but is not limited to, light strips.

[0130] In some of these embodiments, the slide rail assembly 300 is connected to the second cantilever element 131 by expansion bolts.

[0131] In some of these embodiments, the slide rail device 300 is a curtain slide rail.

[0132] Example 4

[0133] like Figure 9 As shown, the interior decoration system of the bay window also includes a decorative structure 400. The decorative structure 400 is located below the cavity unit 160 and connected to the second cantilever unit 130, and is used to shield the lighting device 200.

[0134] like Figure 10 As shown, the decorative structure 400 includes a decorative unit 410 and a heat insulation unit 420. The decorative unit 410 is disposed below the cavity unit 160 and connected to the second cantilever unit 130, and is used to shield the lighting device 200. The heat insulation unit 420 is disposed between the lighting device 200 and the slide rail device 300 and is connected to the second cantilever unit 130, and is used to isolate the lighting device 200 from the slide rail device 300.

[0135] Specifically, the decorative unit 410 is connected to the second cantilever element 131; the heat insulation unit 420 is connected to the second cantilever element 131.

[0136] In some embodiments, the decorative unit 410 includes a mounting element and a decorative element. The mounting element is disposed inside the cavity unit 160 and connected to the second cantilever element 131; the decorative element is disposed below the cavity unit 160 and connected to the mounting element.

[0137] In some of these embodiments, the mounting element is connected to the second cantilever element 131 by expansion bolts.

[0138] In some of these embodiments, the mounting elements include, but are not limited to, suspension keels.

[0139] The dimensions of the decorative element are matched to the dimensions of the cavity unit 160. Generally, the width of the decorative element is smaller than the width of the cavity unit 160, and the length of the decorative element is equal to the length of the cavity unit 160.

[0140] In some of these embodiments, the decorative element includes, but is not limited to, plasterboard.

[0141] In some of these embodiments, the insulation unit 420 is connected to the second cantilever element 131 by expansion bolts.

[0142] The dimensions of the insulation unit 420 are matched with the dimensions of the cavity unit 160. Generally, the height of the insulation unit 420 is less than the height of the cavity unit 160.

[0143] In some embodiments, the insulation unit 420 includes, but is not limited to, an insulation panel.

[0144] The advantage of this utility model is that by setting the decorative structure 400, the wiring of the lighting device 200 can be hidden, and the lighting device 200 is separated from the curtain to prevent the curtain from affecting the heat dissipation of the lighting device 200.

[0145] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bay window structure with reserved interior space for residential buildings, characterized in that, include: An opening unit, wherein the opening unit is disposed on the exterior wall of the building; The first cantilever unit is located at the bottom outside the opening unit and is connected to the building's exterior wall. The top surface of the first cantilever unit is coplanar with the bottom surface of the opening unit. The second cantilever unit is located at the top outside the opening unit and is connected to the building's exterior wall. The bottom surface of the second cantilever unit is coplanar with the top surface of the opening unit, and the outer side of the second cantilever unit is located inside the first cantilever unit. The third cantilever unit is disposed outside the second cantilever unit and connected to the second cantilever unit. The outer side of the third cantilever unit is coplanar with the outer side of the first cantilever unit. The bottom surface of the third cantilever unit is lower than the top surface of the opening unit. A shielding unit is disposed at the top inside the opening unit and connected to the building's exterior wall. The bottom surface of the shielding unit is coplanar with the bottom surface of the third cantilever unit. A cavity unit is disposed between the shielding unit and the third cantilever unit, and a lighting device and a sliding rail device are installed inside the cavity unit; A window unit is disposed between the first cantilever unit and the third cantilever unit, and is connected to the outer end of the first cantilever unit and the outer end of the third cantilever unit, respectively.

2. The bay window structure of claim 1, wherein The opening unit includes: An opening element is provided on the exterior wall of a building. The bottom of the opening element is provided with a first cantilever unit, the top of the opening element is provided with a second cantilever unit, and the top of the opening element is provided with a shielding unit.

3. The bay window structure according to claim 1, characterized in that, The first cantilever unit includes: The first cantilever element is disposed at the bottom outside the opening unit and connected to the building exterior wall. The top surface of the first cantilever element is coplanar with the bottom surface of the opening unit, and the top of the outer end of the first cantilever element is connected to the window unit. The first insulation element is disposed covering the bottom surface of the first cantilever element.

4. The bay window structure of claim 1, wherein The second cantilever unit includes: The second cantilever element is disposed at the top of the outside of the opening unit and connected to the building exterior wall. The bottom surface of the second cantilever element is coplanar with the top surface of the opening unit. The outer side of the second cantilever element is located inside the first cantilever unit. The third cantilever unit is disposed at the outer end of the second cantilever element. The second insulation element is disposed covering the top surface of the second cantilever element.

5. The bay window structure of claim 1, wherein The third cantilever unit includes: A wall element is disposed on the outside of the second cantilever unit and connected to the second cantilever unit, wherein the bottom surface of the wall element is lower than the top surface of the opening unit; The third cantilever element is disposed at the outer bottom end of the wall element. The outer side of the third cantilever element is coplanar with the outer side of the first cantilever unit. The bottom surface of the third cantilever element is coplanar with the bottom surface of the shielding unit. The bottom of the outer end of the third cantilever element is connected to the window unit. The third insulation element is provided to cover the outer side of the wall element.

6. The bay window structure according to claim 1, characterized in that, The blocking unit includes: A shielding element is disposed at the top inside the opening unit and connected to the building's exterior wall. The bottom surface of the shielding element is coplanar with the bottom surface of the third cantilever unit.

7. The bay window structure according to any one of claims 1 to 6, characterized in that, Also includes: A protective unit is disposed on the top of the third cantilever unit and is connected to the top outer end of the third cantilever unit and the bottom outer end of the first cantilever unit of the other bay window structure, respectively, for protection.

8. A bay window interior trim system for a residential building, characterized by, include: The bay window structure as described in any one of claims 1 to 7; A lighting device is disposed inside the cavity unit of the bay window structure and connected to the second cantilever unit of the bay window structure; A sliding rail device is disposed inside the cavity unit of the bay window structure and connected to the second cantilever unit of the bay window structure for installing curtains.

9. The bay window interior trim system of claim 8, wherein, Also includes: A decorative structure is disposed below the cavity unit and connected to the second cantilever unit, for use in shielding the lighting device.

10. The bay window interior decoration system according to claim 9, characterized in that, The decorative structure includes: A decorative unit is disposed below the cavity unit and connected to the second cantilever unit, for use in shielding the lighting device; A heat insulation unit is disposed between the lighting device and the slide rail device and is connected to the second cantilever unit to isolate the lighting device from the slide rail device.

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