JP5322303B2 - Snowfall / icicle prevention device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snow fall and icicle prevention device capable of accurately preventing snow fall from occurring at the edge of eaves by naturally and efficiently dissolving the lump of ice and snow fallen on a roof, a tunnel mouth, a culvert, or the like, and of preventing icicle, leakage of melted snow, entrainment of snow, or the like from occurring. <P>SOLUTION: This snow fall and icicle prevention device includes: a frame body 1 in which a vertical front wall frame 4a is vertically installed at the front end of a square base frame 3, arcuate frames 5 with the arcuate surfaces thereof facing upward are provided to the inside of the front wall frame 4a, and the crests of the arcuate frames 5 are connected to the rear end of the base frame 3 through beam frames 6; and a mesh-like body 2 disposed along the frame body 1. The front end of the base frame 3 is installed on the eaves edge side to form a cylindrical air layer part 20 extending from the front end of the base frame 3 to the rear end thereof on the lower surface of the mesh-like body 2. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention can efficiently prevent snowfall at the eaves by melting ice and snow lump piled up on the roof etc. efficiently, and also prevent the occurrence of icicles, spills, snow entrainment, etc. The present invention relates to a snowfall / icicle prevention device that can be used.

In the snowfall area, snow piled up on the roofs, tunnel pits, culverts, etc. was accumulated to form gradually larger snow masses, and various problems occurred if left untreated. For example, a snow mass formed on a roof melts its lower surface due to radiant heat from the sun and conduction heat from the indoors due to weather recovery, causing an avalanche phenomenon on the inclined roof surface, and the snow mass falls from the eaves This causes damage such as breaking things under the eaves and hitting passersby.
In addition, even if it does not fall, the molten water moves along the slope of the snow lump along the slope, freezes by being exposed to the outside air at the edge of the snow lump, and hangs down as dangerous icicles and snow lees from the eaves. There are problems such as the phenomenon of pushing and destroying the wall directly underneath, and the fact that melt water that does not lead to freezing sometimes travels along the eaves and causes leakage.

Many techniques have been proposed in the past for preventing such falling of snow blocks, preventing the occurrence of icicles, snow traps, etc., and preventing the occurrence of snow leakage and snow entrainment.
For example, as an example of having a non-slip projection on the roof surface, an anti-skid device is provided on the roof surface, tiles with projections are used, a roof surface part is selected and weirs are prevented, and an avalanche of the roof surface is prevented. The technique to do is proposed (for example, refer patent documents 1-2). However, with the techniques disclosed in Patent Documents 1 and 2, it has been difficult to obtain a sufficient snowfall prevention effect.

  Moreover, the technique which attaches a heating apparatus to a roof surface, promotes snow melting by this, and flows into a rain gutter is proposed (for example, refer patent documents 3-4). However, the techniques disclosed in Patent Documents 3 to 4 have problems such as an increase in equipment cost and complicated installation work and maintenance work.

  In addition, a technique has been proposed in which a gap is provided between the snow cover surface and the roof surface to promote snow melting, or a snow fall prevention device in which a net is disposed on the upper surface of the triangular prism at the lower end of the roof. (For example, see Patent Documents 5 to 6). However, the techniques disclosed in Patent Documents 5 to 6 have a problem in that it is difficult to obtain a sufficient snow fall prevention effect because the gap volume for promoting snow melting is small.

Japanese Utility Model Publication No.59-47022 Japanese Utility Model Publication No. 1-82226 Japanese Patent Application Laid-Open No. 5-98562 JP-A-5-280226 JP 2002-30769 A JP 2004-270222 A

  The present invention solves the above problems, and can be easily and inexpensively installed on roofs, tunnel wellheads, culverts, etc., and has a sufficient volume of voids to promote snow melting, such as roofs. A snowfall that can efficiently prevent snowfall, icicles, spills, etc. at the eaves by melting ice and snow masses that have accumulated on top of each other, as well as easy installation and maintenance. -Completed for the purpose of providing an icicle prevention device.

  The snowfall and icicle prevention device of the present invention, which has been made to solve the above-mentioned problems, has a front wall frame perpendicular to the front end of the square base frame, and has a circular arc surface in the front wall frame. An arc-shaped frame is provided, and a frame body in which the apex of the arc-shaped frame and the rear end of the base frame are connected by a beam frame, and a net-like body disposed along the frame body Thus, the front end of the base frame is installed on the eaves side, and a cylindrical air layer portion extending from the front end of the base frame to the rear end is formed on the lower surface of the mesh body.

  The net-like body may be made of a synthetic resin net containing an infrared ray generating material, which is an invention according to claim 2.

  Moreover, the water conveyance part extended to the inside of a ridge can be formed in the lower end of the mesh body arrange | positioned along with a wall frame, and let this be the invention which concerns on Claim 3.

  Further, the cylindrical air layer portion can be a saddle type, and this is the invention according to claim 4.

  In addition, a rear wall frame perpendicular to the rear end of the base frame is erected, and an arc-shaped frame with an arc surface up is provided in the rear wall frame, and the apexes of the front and rear arc-shaped frames are beam frames. And a saddle-shaped air layer portion is formed on the lower surface of the mesh body disposed along the frame body. This is the invention according to claim 5.

  Further, the height of the front wall frame is higher than the height of the rear wall frame, and the front and rear wall frames may be provided with a net-like body, respectively, which is the invention according to claim 6. And

  Furthermore, the cylindrical air layer portion may be a semi-conical shape that is gradually sharpened from the front end toward the rear end, and this is the invention according to claim 7.

  In the invention according to claim 1, the frame includes a base frame, a front wall frame, an arc-shaped frame, and a beam frame, and a net-like body disposed along the frame, and the front end of the base frame is connected to the eaves side. Since a cylindrical air layer portion extending from the front end to the rear end of the base frame is formed on the lower surface of the net-like body, the snow melting of the snow accumulated by this cylindrical air layer portion is naturally promoted and the snow mass It is possible to prevent the occurrence of falling snow, icicles, and snowfall, and the prevention of leakage and snow entrainment.

  In addition, when the mesh body is made of a synthetic resin net as in the invention according to claim 2, it is difficult to freeze, and the weight can be reduced, and the load on the roof can be reduced. When the synthetic resin net including the generating material is used, the snow melting effect can be further increased.

  In the case where the water guide portion is formed as in the invention according to claim 3, water generated by melting snow can be reliably guided into the cage.

  Further, when the air layer portion is of a saddle shape as in the invention according to claim 4, the volume of the air layer portion can be increased and the snow melting action can be further enhanced.

  Further, as in the invention according to claim 5, a rear wall frame perpendicular to the rear end of the base frame is erected, and an arc-shaped frame with an arc surface facing upward is provided in the rear wall frame. When the apexes of the arc-shaped frame are connected by a beam frame, and a bowl-shaped air layer is formed on the lower surface of the net-like body disposed along the frame, the volume is large. A bowl-shaped air layer portion can be easily formed.

  Further, as in the invention according to claim 6, when the height of the front wall frame is higher than the height of the rear wall frame, and the mesh body is disposed on each of the front and rear wall frames, It is possible to more reliably prevent the snow block from falling at the eaves.

  Further, as in the invention according to claim 7, when the cylindrical air layer portion is a semi-conical shape that is gradually sharpened from the front end toward the rear end, the rear wall frame of the frame can be eliminated. A simple frame structure can be obtained.

It is a perspective view which shows embodiment of this invention. FIG. 2 is an exploded perspective view of FIG. 1. It is a front view of FIG. It is a side view which shows a frame. It is explanatory drawing which shows the use condition of FIG. It is a perspective view which shows other embodiment. FIG. 7 is an exploded perspective view of FIG. 6. It is explanatory drawing which shows the use condition of FIG. It is a front view which shows other embodiment. It is a perspective view which shows other embodiment. It is a perspective view which shows other embodiment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 is a perspective view of the present invention, FIG. 2 is an exploded perspective view, FIG. 3 is a front view of FIG. 1, and FIG. 4 is a side view showing a frame. The snowfall and icicle prevention device of the present invention is applied in principle to flat roofs, tunnel wellheads, culverts, etc., but is also applicable to folded plate roofs in which peaks and valleys are alternately provided. (This point will be described later).

The snowfall / icicle prevention device of the present invention basically comprises a frame 1 made of metal or hard resin, and a net-like body 2 disposed along the frame 1. The frame 1 is provided with a front wall frame 4a perpendicular to the front end of a square base frame 3, and an arcuate frame 5 with an arc surface facing upward is provided in the front wall frame 4a. The top of the arcuate frame 5 and the rear end of the base frame 3 are connected by a beam frame 6.
In the illustrated example, only one beam frame 6 is provided, but it is needless to say that a plurality of beam frames 6 may be provided on the arcuate frame 5. Of course, reinforcing frames (not shown) may be provided on the front, rear, left and right sides of the square base frame 3.

Further, a mesh body 2 is disposed on the frame body 1 so as to follow the outer shape of the frame body. The front end of the base frame 3 is installed on the eaves side, and the base frame 3 is placed on the lower surface of the mesh body 2. A cylindrical air layer portion 20 extending from the front end to the rear end is formed. Due to the structure in which the cylindrical air layer portion 20 having such a large accumulation is formed, the snow that has accumulated on the snowfall / icicle prevention device is naturally promoted to melt by the air of the cylindrical air layer portion 20. Thus, it is possible to effectively prevent the falling of snow blocks, the occurrence of icicles and snowfalls, and the prevention of leakage and snow entrainment.
The air layer portion 20 can be easily made by simply attaching the mesh body 2 so as to follow the outer shape of the frame body 1 and is firmly reinforced by the arc-shaped frame 5 and the beam frame 6. It has enough strength to withstand snow.

1-2, the base frame 3 is provided with two arcuate frames 5, 5 and beam frames 6, 6, and two rows of saddle-shaped air layer portions 20 are formed from the front and rear wall frames 4a. It is configured to extend to the rear wall frame 4b. The saddle-shaped air layer portion 20 may be in one row or three or more rows.
In the illustrated example, a vertical rear wall frame 4b is also erected on the rear end of the base frame 3 so as to form a bowl-shaped air layer portion. The arcuate frame 5 is provided, and the frame 1 is formed by connecting the apexes of the front and rear arcuate frames 5 and 5 with a beam frame 6. A mesh body 2 is disposed along with the frame body 1, and a bowl-shaped air layer portion 20 is formed on the lower surface of the mesh body 2.

As shown in FIG. 4, the height of the front wall frame 4a is higher than the height of the rear wall frame 4b, and the front and rear wall frames 4a and 4b are provided with nets 2a and 2b, respectively. It has a structure. Thereby, the fall of the snow lump in the eaves end can be prevented more reliably. Further, as shown in FIG. 3, the net-like body 2a is disposed so as to cover the entire front wall frame 4a, but as shown in FIG. 9, a portion corresponding to the arc-shaped frame 5 is cut out. Thus, the fluidity of the air in the air layer portion 20 can be enhanced by forming the hole portion 8.
Further, as shown in FIG. 5, a water guide portion 7 extending to the inside of the eaves 21 is formed at the lower end of the mesh body 2 a of the front wall frame 4 a, and water generated by melting snow is transmitted to the water guide portion 7. Thus, it is more reliably guided into the cage 21, and is also configured to prevent freezing in the cage 21.

As the mesh body 2, a plate-like body or a synthetic resin net in which a wire mesh or a metal wire is combined in a lattice shape can be used, but a synthetic resin net that is hard to freeze and lightweight and has a low load on the roof is suitable. ing.
Synthetic resin nets that can be molded by melt extrusion, such as vinyl-based vinyl chloride, vinyl acetate, olefin-based polyethylene, polypropylene, etc., mixtures of these synthetic resins, these synthetic resins and ethylene-vinyl acetate, etc. Thermoplastic resins such as copolymers can be used. In particular, an olefin resin such as polyethylene to which a weathering agent, a heat-resistant agent and the like are added according to the installation environment of the snowfall / icicle prevention device can be optimally used in terms of economy, strength, and pollution-free.
In addition, the shape of the mesh of the synthetic resin net may be any shape such as a rectangle, a round shape, a turtle shell shape, and the size of the mesh is not particularly limited. a network of plastic net designed to aperture ratio is in the range of 1 cm ² to 50 cm ^2, it is preferable that the easily available cavity between the roof. In addition, for joining the synthetic resin net and the frame body 1, it is possible to select an appropriate means such as known pressure bonding, adhesion, fusion, fastening, clamping, fastening, fastening or the like.

  Further, the infrared ray generating material that can be used in the present invention is a material having high heat conduction and infrared emissivity, and any material that emits infrared rays when given heat, such as carbon fine powder. Alternatively, fine powder made of aluminum hydroxide and silica can be used.

As shown in FIG. 5, the snowfall / icicle prevention device configured in this way is installed and used for example at the eaves of the front end of the roof surface. The unevenness of the body 2 suppresses slipping off, and snowfall from the eaves is effectively prevented. Further, during snowfall, snow can be taken into the air layer portion 20 through the mesh of the mesh body 2 and melted quickly. Further, during snow accumulation, the air layer of the air layer portion 20 is above the mesh body 2. Since the snow can be melted, the amount of snow on the eaves can be reduced, the formation of snow ridges is suppressed, and the risk of falling snow is eliminated. In addition, since the snow melting phenomenon always occurs due to the presence of the air layer portion 20, the flow of the molten water increases, and it is possible to prevent the occurrence of icicles, snow leopards, and leaks.
Furthermore, the snowfall / icicle prevention device of the present invention can be easily and inexpensively manufactured with a simple structure, can be easily attached to and detached from the roof, and uses a lightweight synthetic resin net. Thus, there is also an advantage that the load on the roof surface can be reduced.

6 to 8 show other embodiments. In this case, the cylindrical air layer portion 20 is formed in a semiconical shape that is gradually sharpened from the front end toward the rear end, and the rear wall frame and the arcuate frame do not exist at the rear end of the base frame 3. Structure. That is, the beam frame 6 is connected between the apex of the arcuate frame 5 provided on the front wall frame 4a and the rear end of the base frame 3, and is supported by the arcuate frame 5 and the beam frame 6 so as to form a semiconical shape. A mold air layer portion 20 is formed.
FIG. 8 shows the state of use. Since the volume of the air layer portion 20 is smaller than that in FIG. 1, it is suitable for installation in a place where the amount of snow is slightly smaller.

  In addition, when applying to the folded-plate roof which provided the mountain part and the trough part alternately, as shown in FIG. 10, FIG. 11, the shielding part 9 for preventing the movement of the snow in a trough part is rear end. The shielding part 9 can be installed in the valley and used for use. Of course, the present invention can be similarly applied to tunnel wellheads and culverts.

DESCRIPTION OF SYMBOLS 1 Frame 2 Net-like body 2a Net-like body 2b Net-like body 3 Base frame 4a Front wall frame 4b Rear wall frame 5 Arc-shaped frame 6 Beam frame 7 Water conveyance part 8 Hole part 9 Shield part 20 Air layer part 21 樋

Claims (7)

  A front wall frame perpendicular to the front end of the square base frame is erected, and an arc-shaped frame with an arc surface facing upward is provided in the front wall frame. It consists of a frame that is connected to the rear end of the frame with a beam frame, and a net-like body that is placed along the frame. A snowfall and icicle prevention device characterized by forming a cylindrical air layer portion extending from the front end to the rear end of the frame.   The snow fall / icicle prevention device according to claim 1, wherein the mesh body is made of a synthetic resin net including an infrared ray generating material.   The snowfall / icicle prevention device according to claim 1 or 2, wherein a water guide portion extending to the inside of the ridge is formed at a lower end of the mesh body disposed along the wall frame.   The snowfall / icicle prevention device according to any one of claims 1 to 3, wherein the cylindrical air layer portion is bowl-shaped.   A rear wall frame perpendicular to the rear end of the base frame is erected, and an arc-shaped frame with an arc surface facing upward is provided in the rear wall frame, and the apexes of the front and rear arc-shaped frames are connected by a beam frame. The snowfall / icicle prevention device according to claim 4, wherein a saddle-shaped air layer portion is formed on the lower surface of the mesh body disposed along the frame body.   The snowfall / icicle prevention device according to claim 5, wherein the height of the front wall frame is higher than the height of the rear wall frame, and a net-like body is provided on each of the front and rear wall frames. The snow fall / icicle prevention device according to any one of claims 1 to 3, wherein the cylindrical air layer portion is a semi-conical shape gradually sharpened from the front end toward the rear end.

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