Ridge ventilation system

Abstract

To provide a ridge ventilation device capable of preventing rainwater blowing up from an eaves side from entering through drain holes, smoothly discharging rainwater, and further improving ventilation performance.SOLUTION: A ridge ventilation device is provided with a bottom shielding plate 15 that shields between a rising plate lower part 22u of a rising guide plate 22 and an inclined plate lower part 23u of an inclined guide plate 23. A recessed space 16 is formed between the rising guide plate 22 and a front plate 11. A drainage stock space 17 is formed by the inclined guide plate 23, the bottom shielding plate 15, and the rising guide plate 22. Rainwater in the recessed space 16 is guided into the drainage stock space 17 by drain holes 21. The rainwater guided into the drainage stock space 17 is discharged from both ends 20s of a wind and rain guide portion 20.SELECTED DRAWING: Figure 1

Description

Technical Field

[0004]

[0001] The present invention relates to a building ventilation device arranged near the top of a roof surface having a gradient.

Background Art

[0002] In recent years, building ventilation that prevents rainwater from entering even in heavy rain accompanied by strong winds in large typhoons, which are on the rise, is desired, and sufficient waterproof performance is required even for guerrilla heavy rain with a large amount of rain falling in a short time. Ventilation in the attic is important for the long life of a house, and improvement in both waterproof performance and ventilation performance is required. Furthermore, a design in which the ventilation device is not conspicuous with a clean appearance is preferred for building ventilation itself. Patent Documents 1 to 3 propose a ventilation device provided with a wind and rain guiding portion opposed to a front opening for a ventilation portion that forms a front opening in a front panel arranged on the eaves side and a rear opening in a rear panel arranged on the top side of the roof surface. In Patent Documents 1 to 3, it is described that the eaves side end of the lower panel covering the lower surface of the ventilation portion and the lower end of the guiding plate of the wind and rain guiding portion are continuously formed, and a drain hole is provided at the lower end of the wind and rain guiding portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the ventilation devices described in Patent Documents 1 to 3, if a large amount of rain falls in a short period of time, rainwater tends to accumulate between the front panel of the ventilation section and the wind and rain guide section, and overflow may occur, especially when installed on a gently sloping roof. Furthermore, if many drainage holes are provided in the wind and rain guide section to prevent overflow, rainwater may seep in through the drainage holes during strong winds such as those caused by large typhoons. Furthermore, conventional techniques for dealing with wind and rain accompanied by crosswinds typically involved installing baffles or similar measures, meaning there was a trade-off between waterproofing performance and ventilation performance.

[0005] Therefore, the present invention aims to provide a ridge ventilation device that can prevent rainwater blown up from the eaves from entering through drainage holes, allows rainwater to be discharged smoothly, and improves both waterproofing and ventilation performance against wind and rain accompanied by crosswinds. [Means for solving the problem]

[0006] The ridge ventilation device of the present invention as described in claim 1 comprises a ventilation section 10 positioned near the top of a sloped roof surface, with a front opening 11A formed in a front panel 11 positioned on the eaves side, and a rear opening 12A formed in a rear panel 12 positioned on the top side of the roof surface; a wind and rain guide section 20 positioned at a predetermined distance from the front panel 11 and facing the front opening 11A; and a top cover 30 that covers the upper surface of the ventilation section 10 and forms a ventilation passage between the rear opening 12A and an opening 5 formed in the roof decking 3, wherein the wind and rain guide section 20 has a vertical guide plate 22 and an inclined guide plate 23, the vertical guide plate 22 is positioned facing the front panel 11, and the inclined guide plate 2 3 is a ridge ventilation device positioned on the eaves side of the rising guide plate 22, and the rising guide plate 22 has drainage holes 21, wherein a bottom shielding plate 15 is provided to shield the space between the lower part 22u of the rising guide plate 22 and the lower part 23u of the inclined guide plate 23, a recessed space 16 is formed between the rising guide plate 22 and the front plate 11, a drainage stock space 17 is formed by the inclined guide plate 23, the bottom shielding plate 15 and the rising guide plate 22, rainwater in the recessed space 16 is guided to the drainage stock space 17 by the drainage holes 21, and the rainwater guided to the drainage stock space 17 is discharged from both ends 20s of the wind and rain guide section 20. The present invention as described in claim 2 is characterized in that, in the ridge ventilation device as described in claim 1, the lower part 23u of the inclined plate is provided with an inclined plate lower extension plate 24 that extends in the direction of the lower part 22u of the upright plate, the back plate 12 is provided at the rear end of the bottom plate 14 that covers the lower surface of the ventilation section 10, and the front end of the bottom plate 14 is installed overlapping the inclined plate lower extension plate 24. The present invention as described in claim 3 is a ridge ventilation device as described in claim 2, characterized in that the lower part 22u of the rising plate is provided with a lower extension plate 25 extending in the direction of the front plate 11, and the position where the lower extension plate 25 and the bottom plate 14 overlap is designated as a fastening position by fasteners 52 and 53. The present invention as described in claim 4 is a ridge ventilation device as described in claim 3, characterized in that the front plate 11 is provided at the eaves-side end of the top cover 30, the lower part of the front plate 11 is extended toward the eaves side and a front plate extension plate 11C is provided, the front plate extension plate 11C is positioned at the fastening position and the front plate extension plate 11C is fastened by the fastening material 53. The present invention as described in claim 5 is a ridge ventilation device as described in any one of claims 1 to 3, characterized in that the front plate 11 is provided at the eaves side end of the top cover 30, and the angle γ between the top cover 30 and the front plate 11 is greater than 90 degrees. [Effects of the Invention]

[0007] According to the ridge ventilation device of the present invention, by providing a bottom shielding plate that shields the space between the lower part of the upright guide plate and the lower part of the inclined guide plate, rainwater blown up from the eaves side can be prevented from entering through the drainage holes provided in the upright guide plate. On the other hand, by discharging the rainwater guided into the drainage storage space by the drainage holes from both ends of the wind and rain guide section, rainwater that flows down from the top cover into the recessed space can be smoothly discharged. Furthermore, when a crosswind blows, negative pressure is generated in the recessed space by the wind and rain guide section. This negative pressure pulls air from the ventilation section into the attic, promoting ventilation. By having a vertical guide plate in the wind and rain guidance section, the negative pressure generated in the recessed space effectively expels air from the ventilation section, thus achieving both waterproofing and ventilation performance. [Brief explanation of the drawing]

[0008] [Figure 1] A figure showing a ridge ventilation device according to one embodiment of the present invention. [Figure 2] Enlarged view of the main part of Figure 1 [Figure 3] Cross-sectional view of the main components of the ventilation system in the building. [Figure 4] Disassembled perspective view of the ventilation system in the building. [Figure 5] Diagram showing the top cover that constitutes the ventilation system of the building. [Figure 6]The wind and rain induction part that constitutes the same-building ventilation device [Figure 7] Figure showing the bottom panel that constitutes the same-building ventilation device [Figure 8] Side cross-sectional view showing the construction state of the building ventilation device using the building ventilation device according to this embodiment [Figure 9] Explanatory drawing showing the function and effect according to this embodiment [Figure 10] Figure showing the building ventilation device corresponding to Figure 1 [Figure 11] Figure showing the building ventilation device corresponding to Figure 5 [Figure 12] Figure showing the building ventilation device corresponding to Figure 6 [Figure 13] Figure showing the building ventilation device corresponding to Figure 7 [Figure 14] Figure showing the building ventilation device corresponding to Figure 8 [Figure 15] Figure showing the building ventilation device according to another embodiment of the present invention [Figure 16] Figure showing the building ventilation device according to another embodiment of the present invention

Mode for Carrying Out the Invention

[0009] The building ventilation device according to the first embodiment of the present invention is provided with a bottom shielding plate that shields the space between the lower part of the rising plate of the rising induction plate and the lower part of the inclined plate of the inclined induction plate. A recessed space is formed between the rising induction plate and the front panel. A drainage stock space is formed by the inclined induction plate, the bottom shielding plate, and the rising induction plate. The rainwater in the recessed space is guided to the drainage stock space through the drain hole, and the rainwater guided to the drainage stock space is discharged from both ends of the wind and rain induction part. According to this embodiment, by providing a bottom shielding plate that shields the space between the lower part of the rising plate of the rising induction plate and the lower part of the inclined plate of the inclined induction plate, it is possible to prevent the rainwater blown up from the eaves side from entering through the drain hole provided in the rising induction plate. On the other hand, by discharging the rainwater guided to the drainage stock space from both ends of the wind and rain induction part, it is possible to smoothly discharge the rainwater that particularly flows down from the top surface cover into the recessed space. Also, when a crosswind blows, a negative pressure is generated in the recessed space by the wind and rain guiding portion, and the negative pressure generated pulls the air inside the eaves from the ventilation portion, promoting ventilation. By having the upward guiding plate in the wind and rain guiding portion, the negative pressure generated in the recessed space can effectively discharge the air in the ventilation portion, thus realizing both waterproof performance and ventilation performance.

[0010] The second embodiment of the present invention is the building ventilation device according to the first embodiment, in which an inclined plate lower part extension plate extending in the direction of the lower part of the rising plate is provided at the lower part of the inclined plate, a back plate is provided at the rear end of the lower surface plate covering the lower surface of the ventilation portion, and the front end portion of the bottom shielding plate of the bottom shielding plate is installed overlapping the inclined plate lower part extension plate. According to this embodiment, by installing the front end portion of the bottom shielding plate of the bottom shielding plate overlapping the inclined plate lower part extension plate, rainwater blown up from the eaves side does not enter the drainage stock space. Note that the lower surface plate can be used as the bottom shielding plate by overlapping the front end portion of the lower surface plate with the inclined plate lower part extension plate.

[0011] The third embodiment of the present invention is the building ventilation device according to the second embodiment, in which an upward plate lower part extension plate extending in the direction of the front plate is provided at the lower part of the upward plate, and the position where the upward plate lower part extension plate and the lower surface plate overlap is set as the fastening position by the fastening material, and the upward plate lower part extension plate overlaps above the lower surface plate. According to this embodiment, the lower surface plate provided with the back plate forming the rear opening and the wind and rain guiding portion can be fastened with the fastening material using the upward plate lower part extension plate, and the fastened lower surface plate and the wind and rain guiding portion can be installed on the roof surface, and then the top surface cover can be installed for construction, so it is excellent in workability. Furthermore, since the lower surface plate is not exposed on the surface, it can be made into parts regardless of the color tone of the top surface cover and the wind and rain guiding portion. As a result, the types of the lower surface plate's fittings can be reduced, exerting effects such as improvement in productivity and reduction in inventory quantity.

[0012] A fourth embodiment of the present invention is a ridge ventilation device according to the third embodiment, wherein a front plate is provided at the eaves-side end of the top cover, and a front plate extension plate is provided that extends the lower part of the front plate toward the eaves, and the front plate extension plate is positioned at a fastening position and fastened with a fastening material. According to this embodiment, the bottom plate with a back plate that forms a rear opening, the wind and rain guide section, and the top cover with a front plate that forms a front opening can be attached to the roof surface with a fastening material using the lower extension plate of the rising plate and the front plate extension plate, thus providing excellent workability.

[0013] A fifth embodiment of the present invention is a ridge ventilation device according to any of the first to third embodiments, wherein a front plate is provided at the eaves-side end of the top cover, and the angle between the top cover and the front plate is greater than 90 degrees. According to this embodiment, rainwater flowing down the top cover is more likely to fall along the front plate, thus guiding the rainwater into the recessed space, and the top covers can be stacked without creating dead space during storage or transport. [Examples]

[0014] A ridge ventilation device according to one embodiment of the present invention will be described below. Figure 1 shows a ridge ventilation system according to this embodiment; Figure 1(a) is a perspective view of the ridge ventilation system, and Figure 1(b) is a cross-sectional view of the ridge ventilation system. Figure 2 is an enlarged view of the main part of Figure 1, where Figure 2(a) is an enlarged view of the main part of Figure 1(a), and Figure 1(b) is a cross-sectional view of the ventilation system in the same building as Figure 1(b).

[0015] The ridge ventilation device according to this embodiment includes a ventilation section 10 positioned near the top of a sloped roof surface, with a front opening 11A formed in a front panel 11 positioned on the eaves side and a rear opening 12A formed in a rear panel 12 positioned on the top side of the roof surface; a wind and rain guide section 20 positioned at a predetermined distance from the front panel 11 and facing the front opening 11A; and a top cover 30 that covers the upper surface of the ventilation section 10 and forms a ventilation passage between the rear opening 12A and an opening 5 (see Figure 8) formed in the roof decking 3 (see Figure 8). The wind and rain guide section 20 includes a vertical guide plate 22 and an inclined guide plate 23. The vertical guide plate 22 is positioned opposite the front plate 11, and the inclined guide plate 23 is positioned closer to the eaves than the vertical guide plate 22. The vertical guide plate 22 has drainage holes 21. The bottom panel 14 covers the bottom surface of the ventilation section 10. The rear panel 12 is provided at the rear end of the bottom panel 14. The ventilation section 10 is a space enclosed by the front panel 11, the rear panel 12, the bottom panel 14, and the top cover 30. Both ends of the ventilation section 10 are closed off by the ventilation section side panels 18. The bottom shielding plate 15 shields the space between the lower part 22u of the upright guide plate 22 and the lower part 23u of the inclined guide plate 23. A recessed space 16 is formed between the vertical guide plate 22 and the front plate 11, and a drainage stock space 17 is formed by the inclined guide plate 23, the bottom shielding plate 15 and the vertical guide plate 22. Both ends 20s of the wind and rain guide section 20 are open. By opening both ends 20s of the wind and rain guide section 20, rainwater guided into the drainage storage space 17 can be discharged from both ends 20s of the wind and rain guide section 20. The upper end of the back panel 12 is bent and extended along the lower surface of the top cover 30 to form a fastening surface 12B, and after forming the fastening surface 12B, it is bent towards the bottom panel 14 to form the back hanging portion 12C. As shown in Figure 2(a), the lower part 23u of the inclined plate is provided with an inclined plate lower extension plate 24 that extends in the direction of the lower part 22u of the upright plate. Then, the front end of the bottom plate 14 is overlapped with the lower extension plate 24 of the inclined plate. By overlapping the front end of the bottom plate 14 with the lower extension plate 24 of the inclined plate in this way, and by forming a bottom shielding plate 15 with the bottom plate 14, rainwater blown up from the eaves side will not enter the drainage storage space 17.

[0016] Thus, according to this embodiment, by providing a bottom shielding plate 15 that shields the space between the lower part 22u of the upright guide plate 22 and the lower part 23u of the inclined guide plate 23, it is possible to prevent rainwater blown up from the eaves side from entering through the drainage holes 21 provided in the upright guide plate 22. On the other hand, by discharging the rainwater guided to the drainage storage space 17 by the drainage holes 21 from both ends 20s of the wind and rain guide section 20, it is possible to smoothly discharge rainwater that flows down from the top cover 30 into the recessed space 16.

[0017] Figure 3 is a cross-sectional view of the main part of the ventilation system in the building. With respect to the bottom plate 14, if the height of the wind and rain guide section 20 is Ha and the height of the top cover 30 is Hb, it is preferable that Ha > Hb. If W is the distance between the lower part 22u of the upright guide plate 22 and the lower part 23u of the inclined guide plate 23, then the distance W is determined such that the angle α between the upright guide plate 22 and the inclined guide plate 23 is 30 degrees ≤ α ≤ 40 degrees. The rising angle β of the rising guide plate 22, relative to the lower plate 14, is preferably 90 degrees. By using these parameters, the system achieves the required waterproofing performance regardless of the roofing material 4 (see Figure 8) or the slope of the roof surface. In addition, the drainage performance of rainwater that accumulates in the drainage storage space 17 during rainfall is improved according to the length of the distance W. While increasing the angle α improves waterproofing performance, it is not aesthetically pleasing. From the standpoint of both waterproofing performance and aesthetics, a value of 35 degrees is preferable.

[0018] Figure 4 is an exploded perspective view of the ventilation system in the building. The ridge ventilation device according to this embodiment can be composed of a top cover 30, a wind and rain guide section 20, and a bottom plate 14.

[0019] Figure 5 shows the top cover that constitutes the ventilation system of the building; Figure 5(a) is a perspective view of the top cover, and Figure 5(b) is a cross-sectional view of the top cover. The top cover 30 has a plurality of first fastening holes 31. The first fastening holes 31 are used to fasten the top cover 30 to the fastening surface 12B. A first fastening material 51 (see Figures 1 to 3) is used to fasten the top cover 30 to the fastening surface 12B. For example, a rivet is used as the first fastening material 51. By fastening the top cover 30 and the fastening surface 12B with the first fastening member 51, the bottom plate 14 and the back plate 12 can be attached to the top cover 30, and the ventilation section 10 is formed. A front panel 11 is provided at the eaves-side end of the top cover 30, and a front panel extension plate 11C is provided by extending the lower part of the front panel 11 toward the eaves. The front panel extension 11C has a plurality of second fastening holes 32. The second fastening holes 32 are used to fasten the front panel extension 11C to the lower extension 25 of the riser plate (see Figure 6) and the bottom panel 14. A second fastening member 52 (see Figures 1 to 3) is used to fasten the front panel extension 11C to the lower extension 25 of the riser plate and the bottom panel 14. For example, a rivet is used for the second fastening member 52. The wind and rain guide section 20 and the bottom panel 14 can be attached to the top cover 30 by fastening the front panel extension 11C, the lower vertical panel extension 25 and the bottom panel 14 with the second fastening member 52. The front extension plate 11C has a plurality of third fastening holes 33. The third fastening holes 33 are used to attach the front extension plate 11C, the wind and rain guide section 20, and the bottom plate 14 to the roof surface. A third fastening member 53 (Figure 8) is used to attach the front extension plate 11C, the wind and rain guide section 20, and the bottom plate 14 to the roof surface. For example, screws are used for the third fastening member 53.

[0020] In this embodiment, the angle γ between the top cover 30 and the front panel 11 is greater than 90 degrees. Therefore, rainwater flowing down the top cover 30 easily falls along the front panel 11, making it easier to guide the rainwater into the recessed space 16, and allowing the top covers 30 to be stacked without creating dead space during storage or transport.

[0021] Figure 6 shows the wind and rain guide section that constitutes the ventilation system of the building; Figure 6(a) is a perspective view of the wind and rain guide section, and Figure 6(b) is a cross-sectional view of the wind and rain guide section. The lower part 22u of the riser plate is provided with a lower extension plate 25 that extends in the direction of the front plate 11. The lower extension plate 25 of the rising plate has a plurality of fourth fastening holes 34. The fourth fastening hole 34 is used to fasten the front panel extension plate 11C, the lower extension plate 25 of the rising panel, and the bottom panel 14. The second fastening member 52 (see Figures 1 to 3) is used to fasten the front panel extension plate 11C, the lower extension plate 25 of the rising panel, and the bottom panel 14. The lower extension plate 25 of the upright plate has a plurality of fifth fastening holes 35. The fifth fastening holes 35 are used to attach the front extension plate 11C, the wind and rain guide section 20, and the bottom plate 14 to the roof surface. A third fastening member 53 (Figure 8) is used to attach the front extension plate 11C, the wind and rain guide section 20, and the bottom plate 14 to the roof surface.

[0022] Figure 7 shows the bottom panel that constitutes the ventilation system for the building; Figure 7(a) is a perspective view of the bottom panel, and Figure 7(b) is a cross-sectional view of the bottom panel. The rear panel 12 has a rear riser portion 12D formed below the rear opening 12A. By forming the rear hanging portion 12C and the rear riser portion 12D, the watertight performance can be improved. The fastening surface 12B has a plurality of sixth fastening holes 36. The sixth fastening holes 36 are used to fasten the top cover 30 to the fastening surface 12B. A first fastening material 51 (see Figures 1 to 3) is used to fasten the top cover 30 to the fastening surface 12B. The bottom plate 14 has a number of seventh fastening holes 37. The seventh fastening holes 37 are used to fasten the front panel extension plate 11C, the lower extension plate 25 of the rising panel, and the bottom plate 14. A second fastening member 52 (see Figures 1 to 3) is used to fasten the front panel extension plate 11C, the lower extension plate 25 of the rising panel, and the bottom plate 14. The bottom plate 14 has a plurality of eighth fastening holes 38. The eighth fastening holes 38 are used to attach the front extension plate 11C, the wind and rain guide section 20, and the bottom plate 14 to the roof surface. A third fastening member 53 (Figure 8) is used to attach the front extension plate 11C, the wind and rain guide section 20, and the bottom plate 14 to the roof surface.

[0023] As described above, in this embodiment, the position where the lower extension plate 25 of the rising plate and the bottom plate 14 overlap is designated as the fastening position by the second fastener 52. The bottom plate 14, which has a back plate 12 forming a back opening 12A, and the wind and rain guide section 20 can be fastened together using the lower extension plate 25 of the rising plate and the second fastener 52. The fastened bottom plate 14 and wind and rain guide section 20 can then be installed on the roof surface, and the top cover 30 can be installed afterward, thus offering excellent workability. Furthermore, in this embodiment, the position where the lower extension plate 25 of the upright plate and the bottom plate 14 overlap is designated as the fastening position by the third fastener 53, the front extension plate 11C is positioned at the fastening position, and the bottom plate 14, which has a back plate 12 forming a back opening 12A, and the top cover 30, which has a wind and rain guide section 20 and a front plate 11 forming a front opening 11A, can be attached to the roof surface with the third fastener 53 using the lower extension plate 24 of the inclined plate and the front extension plate 11C, thus offering excellent workability.

[0024] The following describes a method for installing a ridge ventilation system using a ridge ventilation system according to one embodiment of the present invention. Figure 8 is a side cross-sectional view showing the installation state of a ridge ventilation system using the ridge ventilation system according to this embodiment, and shows the installation state on a flat ridge. Figure 8 shows the roof structure of a slate flat ridge. In the structure shown in Figure 8, a ridge beam 2 is provided at the top of the column, and rafters 1 are provided above the ridge beam 2, sloping diagonally downwards. Roof sheathing 3 is provided above the rafters 1, and roofing material 4 is laid on the upper surface of the roof sheathing 3. The opening 5 is formed in a part of the ridge-side end of the roof sheathing 3. A flashing 60 is attached to the opening end of the roof sheathing 3. The ridge ventilation device is fixed to the roof decking 3 by a third fastening member 53. As shown in Figure 8(b), according to this embodiment, by providing a bottom shielding plate 15 in the wind and rain guide section 20, it is possible to prevent rainwater blown up from the eaves side from entering through the drainage holes 21. As described above, the ridge ventilation devices shown in Figures 1 to 7 can be installed on a slate flat ridge roof structure, and although they were described as being for double-slope roofs, they can also be applied to single-slope roofs.

[0025] Figure 9 is an explanatory diagram illustrating the effects of this embodiment. Figure 9(a) shows a ridge ventilation system according to this embodiment, and Figure 9(b) shows a ridge ventilation system as a comparative example. The arrows indicate airflow. As shown in the figure, when a crosswind blows, negative pressure is generated in the recessed space 16 by the wind and rain guide section 20. This negative pressure pulls air from the ventilation section 10 into the attic, promoting ventilation. In this case, by having a rising guide plate 22 as in the wind and rain guide section 20 of this embodiment, the recessed space 16 is narrower compared to the case without the rising guide plate 22 as shown in the comparative example, and therefore the ventilation promotion effect can be enhanced by a higher negative pressure effect.

[0026] Figures 10 to 14 will be used to describe another embodiment of the ridge ventilation device according to the present invention. This embodiment is a ridge ventilation device used for metal roofs, and the same reference numerals are used for components that have already been described, and their descriptions are omitted. Figure 10 shows the ridge ventilation system corresponding to Figure 1, Figure 11 corresponds to Figure 5, Figure 12 corresponds to Figure 6, Figure 13 corresponds to Figure 7, and Figure 14 corresponds to Figure 8.

[0027] As shown in Figure 10(b), in the ridge ventilation device according to this embodiment, a columnar elastic material 45 is provided between the top cover 30 and the bottom plate 14. By providing the columnar elastic material 45 between the top cover 30 and the bottom plate 14, the strength of the top cover 30 in particular can be increased. As shown in Figure 11, the top cover 30 has a plurality of ninth fastening holes 39. The ninth fastening holes 39 are used to fix the columnar elastic material 45 and to attach the top cover 30 to the bottom plate 14 to the roof surface. A fourth fastening member 54 (Figure 14) is used to attach the top cover 30 to the bottom plate 14 to the roof surface. For example, screws are used for the fourth fastening member 54. In this embodiment of the ridge ventilation device, the multiple fifth fastening holes 35 shown in Figure 12 are not used. However, if the fifth fastening holes 35 are provided, the device can also be used as a component for a ridge ventilation device that can be installed on a slate flat ridge roof structure. As shown in Figure 13, the bottom plate 14 has a plurality of tenth fastening holes 40. The tenth fastening holes 40 are used to fix the columnar elastic material 45 and to attach the top cover 30 and the bottom plate 14 to the roof surface. A fourth fastening member 54 (Figure 14) is used to attach the top cover 30 and the bottom plate 14 to the roof surface. As shown in Figure 14, the ridge ventilation device according to this embodiment can be installed on a metal flat ridge roof structure. In this embodiment as well, by providing a bottom shielding plate 15 in the wind and rain guide section 20, it is possible to prevent rainwater blown up from the eaves side from entering through the drainage holes 21. Furthermore, the ridge ventilation system according to this embodiment can also be applied to single-slope roofs.

[0028] Figures 15 and 16 show a ridge ventilation device according to yet another embodiment of the present invention. As shown in Figures 15(a) and 16(a), the configuration is the same as in Figure 1(b) when the components are attached.

[0029] In the embodiment shown in Figure 15, as shown in Figure 15(b), the top cover 30 and the wind and rain guide section 20 are formed from the same material. That is, the top cover 30 and the wind and rain guide section 20 are formed from a single sheet of material. As shown in Figure 15(c), the bottom plate 14 has the same configuration as in Figures 7 and 13. In the embodiment shown in Figure 16, as shown in Figure 16(c), the wind and rain guide section 20 and the bottom plate 14 are formed from the same material. That is, the wind and rain guide section 20 and the bottom plate 14 are formed from a single sheet of material. Then, as shown in Figure 16(d), the bottom shielding plate 15 is used as a separate, independent component. As shown in Figure 16(a), the top cover 30 has the same configuration as in Figure 7. Although Figures 15 and 16 describe the ridge ventilation system corresponding to the embodiments shown in Figures 1 to 8, the embodiments shown in Figures 15 and 16 can also be applied to the ridge ventilation systems of the embodiments shown in Figures 10 to 14. [Industrial applicability]

[0030] This invention can be applied not only to single-slope roofs and double-slope roofs, but also to lower roofs. [Explanation of Symbols]

[0031] 1 Rafter 2 ridge trees 3 Field board 4. Roofing materials 5 Openings 10 Ventilation section 11 Front plate 11A front opening 11C Front plate extension plate 12 Back plate 12A back opening 12B Fastening surface 12C Back hanging part 12D rear standing part 14 Bottom plate 15 Bottom shielding plate 16 Recessed space 17 Drainage storage space 18 Ventilation side panel 20 Wind and rain guidance section 20s both ends 21 drainage holes 22 Upright guide board 22u Lower part of the riser plate 23 Inclined guide plate 23u lower part of inclined plate 24 Slanted plate lower extension plate 25 Lower extension plate of the riser plate 30 Top cover 31 First fastening hole 32 Second fastening hole 33 Third fastening hole 34. Fourth fastening hole 35 Fifth fastening hole 36. Sixth fastening hole 37. Seventh fastening hole 38. Eighth fastening hole 39. 9th fastening hole 40 10th fastening hole 45 Columnar elastic material 51 First fastening material 52 Second fastening material 53 Third fastening material 54. Fourth fastening material 60 Drainage Ha (height of the wind and rain guidance section) Hb (height of top cover) W distance α angle β Rising angle γ angle

Claims

1. It is positioned near the top of the sloping roof surface, A ventilation section is provided, which has a front opening formed in the front panel located on the eaves side and a rear opening formed in the rear panel located on the top side of the roof surface, A wind and rain guide section is positioned at a predetermined distance from the front panel and facing the front opening, A top cover that covers the upper surface of the ventilation section and forms a ventilation passage between the rear opening and the opening formed in the roof sheathing. Equipped with, The wind and rain guidance section has a vertical guidance plate and an inclined guidance plate. The aforementioned riser guide plate is positioned opposite the front panel. The inclined guide plate is positioned on the eaves side of the upright guide plate. The aforementioned riser guide plate has drainage holes. It is a ridge ventilation device, A bottom shielding plate is provided to shield the space between the lower part of the upright plate of the upright guide plate and the lower part of the inclined plate of the inclined guide plate. A recessed space is formed between the aforementioned riser guide plate and the aforementioned front plate. The inclined guide plate, the bottom shielding plate, and the upright guide plate form a drainage storage space. The rainwater in the recessed space is guided to the drainage storage space through the drainage hole. The rainwater guided into the drainage storage space is discharged from both ends of the wind and rain guide section, and an inclined plate extension plate is provided at the lower part of the inclined plate, extending in the direction of the lower part of the upright plate. The rear plate is provided at the rear end of the bottom plate that covers the lower surface of the ventilation section. The bottom plate is formed by the lower plate, The front end of the bottom shielding plate is installed overlapping the lower extension plate of the inclined plate. A ridge ventilation system characterized by the following features.

2. An extension plate is provided at the lower part of the riser plate, extending in the direction of the front plate. The position where the lower extension plate of the rising plate and the bottom plate overlap is defined as the fastening position by the fastener, and the lower extension plate of the rising plate overlaps above the bottom plate. The ridge ventilation device according to feature 1.

3. The front panel is provided at the eaves-side end of the top cover. An extension plate is provided on the front panel, extending the lower part of the front panel toward the eaves. The front panel extension is positioned at the fastening location. The front panel extension is fastened with the aforementioned fastening material. The ridge ventilation device according to feature 2.

4. The front panel is provided at the eaves-side end of the top cover. The angle between the top cover and the front panel is made greater than 90 degrees. A ridge ventilation device according to claim 1 or 2.

Images