JPH0137069Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roof snow removal and water leak prevention device used in snowy areas.

[Conventional technology]

In snowy regions, it is necessary to remove snow accumulated on roofs, and a known snow removal device for this purpose uses a band-shaped electric heating sheet 2, as shown in FIGS. 6 to 8.

That is, in the structure shown in FIG. 6, an electric heating sheet 2 is placed horizontally in the direction of the eaves 1a of a sloped roof 1, that is, in the center in the vertical direction, and on the back side of the roof board 3 along the horizontal direction perpendicular to this direction. This is what was installed. The electric heating sheet 2 is a conventionally known electric heating carpet used as an electric heating carpet made into a long and narrow strip. In addition, in FIG. 6, 4 is a heating device placed in the room 5.

However, in the snow removal/water leakage prevention device shown in FIG. Since the outside temperature is low on the side, ice forms along the horizontal direction of the roof, and a puddle 9 of melted snow forms on the side of the building 8 where the ice forms.

In addition, as shown in FIGS. 7 and 8, the electric heating sheet 2 may be arranged along the eaves edge 1b of the roof 1 in the lateral direction, or a plurality of electric heating sheets 2 may be arranged from the eaves edge 1b to the ridge side. It is also possible to arrange . Note that the same reference numerals in FIGS. 7 and 8 as in FIG. 1 indicate the same parts.

Furthermore, as shown in Utility Model Application Publication No. 54-31338,
Some had a single heating wire installed vertically from the edge of the eaves of the roof toward the ridge.

[Problem that the invention attempts to solve]

However, with the roof snow removing devices shown in Figures 6, 7, and 8, when the outside temperature is low, not only the snow around the roof directly above the electric heating sheet melts, forming a cavity, but also the snow at the eaves. A small mound of frozen snow forms an embankment, making it difficult for snow to slide down from this embankment towards the eaves, and snow water from the roof that has melted due to indoor heating accumulates in these areas, and this accumulated water flows towards the ridge. Backflow and water leakage from the joints of the roof panels, so-called ``suga leaks,'' were a problem, and they tend to occur in buildings with gentle slopes such as those with metal roof panels.

Note that when the electric heating sheet 2 is placed along the eaves edge 1b of the roof 1 in the horizontal direction as shown in FIGS.
a and hanging from the edge of the eaves of the roof 1, the above-mentioned problem can hardly be solved, and the 8th
In the case shown in the figure, the number of cavities 7 in the roof 1 is only three in the vertical direction, and the above-mentioned problems can hardly be solved.

Furthermore, what is shown in Utility Model Application Publication No. 54-31338 is
In one horizontal part of the roof, heating with electric heating wires creates a part without a cavity, but in the part without horizontal heating wires, the snow does not melt and forms a frozen embankment.
Almost the same as shown in Figures 6 to 8 above, snow on the roof other than directly above the electric heating source is difficult to slide down to the eaves, and snow water collects on the ridge side of the embankment, preventing water leakage. There was a problem that I couldn't do it.

Furthermore, if the area of the electric heating sheet is increased, or in extreme terms, if the roof surface is completely covered with electric heating sheet, it is possible to eliminate or reduce the formation of ice on the eaves of the roof, and water puddles can also be eliminated. Electric heating sheets require something that generates heat at a temperature of 30 to 100°C, which increases electricity consumption and is not practical.

This invention was developed to solve the above-mentioned problem, and in order to prevent water leakage called "suga leakage", it is necessary to prevent water from pooling at the boundary between the eaves of the roof and the upper part of the main roof. Focusing on things that can be prevented from occurring, we use a large number of vertically elongated electric heating sheets to reliably prevent water leaks, called ``suga leaks,'' in addition to snow removal, even though electricity consumption is low. The purpose is to provide a roof snow removal and water leakage prevention device that can be used.

[Means for solving problems]

The roof snow removal and water leakage prevention device according to this invention is
A large number of flexible electric heating sheets in a vertically rectangular shape are installed between the edge of the eaves of the sloped roof and the boundary between the eaves and the upper part of the main roof, extending slightly to the ridge side.
These are installed side by side across the entire horizontal direction of the roof, closely attached to the back surface of the roof shingles at regular intervals.

[Effect]

The roof snow removal and water leakage prevention device according to this invention is
Since a large number of vertically rectangular electric heating sheets are arranged side by side over the entire horizontal direction of the roof at regular intervals, the total area of the electric heating sheets is smaller compared to one without such spacing, and these electric heating sheets can be used to cover the eave edges of the roof. The electric heating sheet is placed slightly closer to the ridge than the boundary between the eaves and the upper part of the main roof, so the total area of the electric heating sheet is smaller than if it were extended further toward the ridge, and the electric heating sheet is also flexible. Since it was tightly attached to the back side of the roof board using
Heat from the electric heating sheet can be transmitted to the roof without waste, and therefore electricity consumption during use is relatively low.

In addition, the present invention has a large number of vertically rectangular electric heating sheets arranged in the vertical direction of the roof from the edge of the eaves to the boundary between the eaves and the upper part of the main roof to the slightly ridge side. A large number of electric heating sheets are installed horizontally at regular intervals across the entire area, so when snow accumulates on the roof, electricity is applied to the electric heating sheets to generate heat, and the upper surface of the roof where the electric heating sheets are in close contact with the back of the roof shingles. Snow that comes into contact with or is close to the eaves is heated and melted by electric heating sheets at multiple locations across the entire lateral area, from the edge of the eaves to slightly toward the ridge side of the boundary between the eaves and the upper part of the main roof. Therefore, if the snow is not frozen, the snow in the areas facing the electric heating sheet will tend to slide off the edge of the eaves due to the slope of the roof and gravity, and if the snow slides down, the snow will fall on these areas. Snow slides in from the ridge side and also from both the left and right sides, making the movement of snow uneven both vertically and horizontally, making it difficult to form cavities. Even if the cold weather is strong and the snow freezes on the eaves and ice forms, the electric heating sheet can be used to generate heat in a tunnel-like manner from the edge of the eaves to the boundary with the upper part of the main roof or slightly to the side of the ridge. As many vertically elongated cavities as there are sheets are formed. Therefore, even if the snow on the roof on the ridge side of the boundary melts due to indoor heating, there will be no puddles at the boundary where water flows back toward the ridge, and the water will flow into the tunnel-like cavity. The water then flows towards the edge of the eaves due to the slope of the roof, and flows down from the edge of the eaves, thus making it possible to reliably prevent water leakage called ``suga leak''. Moreover, the width of the tunnel-like cavity expands due to the heating by the electric heating sheet and the water flowing toward the edge of the eaves, so that the width of the tunnel-like cavity increases from the part where the cavity is formed to the edge of the eaves, similar to when the snow does not freeze. Snow slides off the edge of the eaves.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In FIG. 1, reference numeral 1 indicates a roof having a slope, and the roof 1 has a plurality of roofs extending from the eaves edge 1b toward the ridge side, slightly beyond the boundary 1c between the eaves 1a and the upper part of the main building 10. vertically elongated electric heating sheet 11
are arranged at regular intervals over the entire horizontal area of the back side of the roof board 3.

That is, as shown in FIGS. 2 and 3, the roof 1 has rafters 13 fixed on the main building 12 and perpendicular to the rafters 13, and a base material 14 such as a wood wool board is laid on the rafters 13. The electric heating sheet 11 is disposed between a roof plate 3 made of a long metal plate such as a galvanized steel plate or a painted steel plate placed horizontally thereon.

The electric heating sheet 11 is made of a conventionally known flexible surface heating element, such as one used as an electric heating carpet, and is closely attached to the back surface of the roof board 3 by means of adhesion or the like in accordance with the shape thereof. . Also,
The electric heating sheet 11 has a width of about 100 mm and a length of about 100 mm.
They are formed into a vertically long rectangular shape of about 1500 mm, and are arranged at regular intervals of about 450 to 600 mm, and generate heat to a temperature of about 30 to 100 degrees Celsius when energized.

In the snow removal/water leak prevention device of the embodiment configured as described above, when snow 6 is piled up on the roof 1, when electricity is applied to the electric heating sheet 11, the electric heating sheet 11 generates heat. Therefore, snow that comes into contact with and approaches the top surface of the roof 1 where the electric heating sheet 11 is in close contact with the back surface of the roof shingle 3,
It is heated and melted by the electric heating sheet 11 at multiple locations over the entire lateral area from the edge 1b of the eave to the boundary 1c between the eave 1a and the upper part of the main house 10, slightly toward the ridge.
Therefore, if the snow is not frozen, the snow on the part facing the electric heating sheet 11 will be removed from the roof 1.
Due to the slope and gravity of the eaves, it is easy to slide off the eaves edge 1b, and when snow slides down, it not only slides into these areas from the ridge side, but also enters from both the left and right sides, and at this time, the snow moves vertically and horizontally. Since it is uneven in both directions, cavities as shown in FIGS. 6 to 8 are less likely to occur. In addition, the cold air was strong, and the eaves 1a
Even if the snow freezes on the top and a frozen area 8 is formed, when the electric heating sheet 11 is energized, it generates heat and forms a water puddle at the boundary 1c between the eaves edge 1b and the upper part of the main house 10, or slightly on the side of the ridge. However, a large number of vertically elongated cavities 15 are formed in a tunnel-like manner up to the portions where this is likely to occur in the past, as many as the number of electric heating sheets 11. For this reason, even if the snow 6 on the roof 1 on the ridge side from the boundary part 1c melts due to indoor heating, water will not flow back to the boundary part 1c to the joint part 3a of the roof shingles 3 on the ridge side. Water does not accumulate, and water flows through the tunnel-shaped cavity 15 and flows down from the eaves edge 1b due to the slope of the roof 1, thereby ensuring that water leakage, which is called "suga leakage", is prevented. can be prevented. Moreover, the heating by the electric heating sheet 11 and the eaves edge 1b
Since the width of the tunnel-like cavity 15 is expanded by the water flowing toward the eaves, the snow on the eaves edge 1b side from the part where the cavity 15 is formed slides down from the eaves edge in an action similar to that in the case where the snow does not freeze.

4 and 5 show other embodiments of the present invention,
In this embodiment, an electric heating sheet 11 having a vertically elongated rectangular shape and an electric heating sheet 2 having a horizontally elongated band shape orthogonal thereto are closely attached to the back surface of a roof board 3. In addition, the fourth
5, the same reference numerals as in FIGS. 1 to 3 indicate corresponding parts.

In this embodiment, when the snow on the roof 1 freezes, in addition to the vertically long cavities 15 of the embodiments shown in FIGS. , 7 are connected at the intersection, and melted snow between the vertically long cavities 15 flows into the horizontally long cavities 7.
through which it is led into the elongated cavity 15, which provides better drainage and snow sliding than that shown in FIGS. 1-3.

In addition, in this example, the vertically long electric heating sheet 1
A plurality of horizontally elongated electric heating sheets 2 perpendicular to 1 may be provided in the direction of the eaves.

[Effect of idea]

As explained above, according to the present invention, a large number of vertically rectangular electric heating sheets are arranged side by side over the entire horizontal direction of the roof at regular intervals, so the total area of the electric heating sheets is smaller than when there is no such spacing. By the way, these electric heating sheets are installed from the edge of the eaves of the roof to the boundary between the eaves and the upper part of the main roof, slightly towards the ridge side, so the total area of the electric heating sheets is smaller than if they were extended from this point towards the ridge side. In addition, since the electric heating sheet is made of a flexible material and is placed in close contact with the back of the roof board, the heat of the electric heating sheet can be transferred to the roof without waste, and therefore electricity consumption during use is relatively low. It takes less.

In addition, according to the present invention, a large number of vertically elongated rectangular electric heating sheets are arranged in the vertical direction of the roof from the edge of the eaves to the boundary between the eaves and the upper part of the main roof to slightly toward the ridge side, We installed a large number of them in parallel at regular intervals across the entire area of the roof, so when snow accumulates on the roof, electricity is applied to the electric heating sheets to generate heat, and the electric heating sheets are placed in close contact with the back of the roof shingles. Snow that comes into contact with or is close to the top surface is heated and melted by electric heating sheets at multiple locations across the entire lateral area, from the edge of the eaves to slightly closer to the ridge than the boundary between the eaves and the upper part of the main roof. Therefore, if the snow is not frozen, the snow in the areas facing the electric heating sheet will tend to slide off the edge of the eaves due to the slope of the roof and gravity, and if the snow slides down, the snow will fall on these areas. Snow slides in from the ridge side and also from both the left and right sides, making the movement of snow uneven both vertically and horizontally, making it difficult to form cavities. Even when the cold weather is strong and the snow freezes on the eaves and ice forms, the electric heating sheet can be heated in a tunnel shape from the edge of the eaves to the boundary with the upper part of the main roof or slightly towards the ridge. A large number of vertically elongated cavities are formed. Therefore, even if the snow on the roof on the ridge side of the boundary melts due to indoor heating, there will be no puddles at the boundary where water flows back toward the ridge, and the water will flow into the tunnel-like cavity. The water then flows towards the edge of the eaves due to the slope of the roof, and flows down from the edge of the eaves, thus making it possible to reliably prevent water leakage called ``suga leak''. Moreover, due to the heating by the electric heating sheet and the water flowing towards the edge of the eaves,
Since the width of the tunnel-shaped cavity is expanded, the effect is that the snow on the eaves edge side slides away from the eaves edge from the part where the cavity is formed, in a similar manner to the case where the snow does not freeze.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of a roof equipped with a snow removal/water leak prevention device according to an embodiment of the present invention, Fig. 2 is an enlarged side sectional view of the main part, Fig. 3 is a front sectional view of the same part, and Fig. 3 is a front sectional view of the same part. Figure 4 is a schematic perspective view of a roof equipped with a snow removal and water leakage prevention device according to another embodiment of the present invention, Figure 5 is a front cross-sectional view of the same part, and Figures 6 to 8 are different types of conventional snow removal devices. FIG. 3 is a partial schematic side sectional view showing a roof equipped with a water drop and water leakage prevention device. 1... Roof, 1a... Eave part, 1b... Eave edge, 1c... Boundary part, 2, 11... Electric heating sheet,
7, 15... hollow, 8... frozen part, 9... puddle, 10... main house.

Claims (1)

[Scope of utility model registration request] It extends from the edge of the eaves of a sloped roof to slightly toward the ridge from the boundary between the eaves and the upper part of the main roof.
This roof snow removal and water leakage prevention device is characterized by a large number of flexible electric heating sheets in the shape of a vertically elongated rectangle, which are arranged side by side over the entire horizontal direction of the roof in close contact with the back surface of the roof board at regular intervals.