JP2002309729A - Snowmelt drain device of roof for cold district - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a snowmelt drain device of a roof for a cold district allowed to be installed in various forms of roofs, and capable of surely draining snowmelt on the roof to effectively prevent generation of re-icing and icicles. SOLUTION: In this snowmelt drain device of the roof for the cold district, snowmelt on the roof is drained from the eaves. A heating unit 118 for melting at least some of frozen snowmelt to secure a snowmelt channel on the inside of the frozen snowmelt is provided on the roof 130, and at least a part of the heating unit 118 is extended to the tip of the eaves 131. Preferably the heating unit 118 is a linear heating unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigeration system capable of effectively preventing phenomena such as dusting and icing by effectively guiding snowmelt water on a roof to the eaves and draining the water from the roof. The present invention relates to a snow melting water drainage device for a roof for land use.

[0002]

2. Description of the Related Art In cold regions such as Hokkaido, snowmelt water on the roof freezes and grows thickly like an ice embankment, or hangs down as a icicle on the eaves. Social problems that frequently cause phenomena and accidents such as falling snow and ice that cause personal injuries have become major problems. The icy and warming phenomena are attributable to the fact that snowmelt water on the roof melted by solar heat or indoor living heat freezes at the eaves with low temperature and hinders smooth drainage of snowmelt water.

[0003] In view of such problems, Patent No. 2
Japanese Patent Application Publication No. 966998 discloses a method and an apparatus for preventing freezing of a roof for a cold region, in which the snowmelt water is discharged without freezing or generating icicles when the temperature of the snowmelt water becomes freezing. According to the invention described in this publication, a rain gutter or drainage channel of an outside air blocking type is provided along the eaves, and a snowfall prevention frame plate is provided on the eaves adjacent to the rain gutter or drainage flow passage. And stand up integrally with it.

[0004] Further, at the lower end portion of the snow fall prevention frame plate connected to the rain gutter or the drain passage, an inflow port for passing snowmelt water on the roof to the rain gutter or the drain passage is opened, and the rain gutter or the drain gutter is opened. A heating element for preventing freezing of snowmelt water is attached to the drain channel and the roof. The rain gutter or the drainage channel can be opened and closed by a lid so that outside air can be shut off. Then, when the temperature sensor detects the temperature of the frozen outside air of the snowmelt water, the heating element is energized to heat the snowmelt water. Further, the heat of the heat generating element in the rain gutter or the drain passage is trapped in the outside air shielding type rain gutter or the drain passage to prevent icing on the surface of the lid.

However, the device described in this publication is
Although a heating element was mounted on the eaves, snowmelt water could freeze further on the eaves or between the eaves and the rain gutter or drainage channel, preventing smooth drainage of snowmelt water. . For this reason, measures such as increasing the area of the planar heating element and increasing the heat generation temperature have been taken, but none of these are effective means, and there are problems such as an increase in electricity bills and equipment costs. there were. In addition, the device described in the above publication becomes difficult to install when the shape of the roof is complicated, and
There has been a problem that the drainage of the snowmelt water cannot be performed smoothly, and the formation of puffing and icing cannot be sufficiently prevented.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and can be installed on a roof of any shape, can be easily installed, and costs for equipment and operation are low. An object of the present invention is to provide a snow melting water drainage device for a roof for a cold region, which is inexpensive and can surely drain the snow melting water on the roof and effectively prevent the formation of burrs and icicles.

[0007]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent No. 2966 is disclosed.
A conventional anti-icing apparatus and a snow melting apparatus, such as Japanese Patent Application Laid-Open No. 998, have been aimed at preventing icing of snow-melting water at the eaves or melting the frozen snow-melting water. Therefore, it is necessary to provide a heating element having an area and a calorific value capable of obtaining a calorific value for melting the frozen snowmelt water. The inventor of the present invention measures the change of conventional ideas such as icing prevention and snow melting, and allows a certain amount of icing of snow melting water at the eaves, while establishing a flow path through which snow melting water can flow inside the frozen part. , And the snowmelt water can be drained from the roof through this channel.

Specifically, as described in claim 1,
In a snow melting water drainage device for a cold region for draining snow melting water on a roof from an eaves tip, for melting at least a part of frozen snow melting water to secure a snow melting water channel inside the frozen snow melting water. A heating element is provided on the roof, and at least a part of the heating element is extended to the tip of the eaves. With this configuration, even if the snowmelt water freezes at the eaves tip, it is possible to secure a water channel for the snowmelt water to flow inside the frozen snowmelt water, preventing the occurrence of drifting and icing etc. can do.

According to a second aspect of the present invention, the heating element is a linear heating element. Further, the invention according to claim 3 is configured such that the heating element is a planar heating element. As described above, the heating element for forming the snow melting water channel may be linear or planar. The linear heating element has an advantage that it can be installed on a roof of any shape and is easy to install. Also,
The planar heating element can not only secure a snowmelt channel in the frozen snowmelt water, but also can prevent icing and melt snow, similarly to the conventional heating element. Melting snow at the eaves portion has the advantage that the load on the eaves portion can be reduced and damage to the eaves portion due to the load can be prevented.

According to a fourth aspect of the present invention, a heating element for preventing icing or snow melting for preventing the snow melting water from icing on the eaves is provided on the roof. In the present invention, a heating element for preventing icing or snow melting and a heating element for preventing generation of a icicle may be provided in addition to a heating element for securing a snowmelt water channel. By doing so, it is possible to more reliably prevent the occurrence of a counterbore or a flicker.

According to a fifth aspect of the present invention, the heating element is suspended from the eaves by a predetermined length. The invention according to claim 6 is characterized in that, when a rain gutter or a drain channel for draining the snowmelt water is provided along the eaves, a part of the heating element is removed by the rain gutter or drain. The configuration extends to the inside of the flow path. With this configuration, the snowmelt water is drained from the roof along the heating element that hangs down from the eaves, so that the snowmelt water can be more reliably drained from the roof. Preferably, a heating element for preventing icing is also provided inside the rain gutter or the drain passage.

[0012] According to a seventh aspect of the present invention, the heating element comprises:
The structure extends from the eaves to the snow stopper above the roof. Usually, when snow melting or icing prevention is performed on the eaves, a snow stopper is provided 0.5 m to 2.5 m above the eaves. This snow stopper is for preventing snow accumulated on the roof from falling. However, there is a case where snow is hardly accumulated and frozen in the snow stopper, and the flow of the snowmelt water is obstructed. Therefore, by extending the heating element to such a snow stopper and securing a snow melting water channel from the portion to the eaves, it is possible to drain snow melting water.

[0013] The present invention can be applied to a roof of a complicated form in which it has been difficult to install a heating element for preventing icing or melting snow, and it has been difficult to prevent the formation of dusting and icing. is there. In particular, the effect of the present invention is achieved in a folded plate roof having a sawtooth cross section as described in claim 8, a radial folded plate roof as described in claim 9, and a nose folded plate roof as described in claim 10. Is big.

[0014] The invention described in claim 11 is configured such that the start and stop of the snow melting water drainage device are performed by a timer. The start and stop of the snowmelt water drainage device may be performed manually, but problems such as forgetting to turn on the switch in winter when freezing occurs and forgetting to turn off the switch in spring when freezing does not occur easily occur. Therefore, it is preferable that the switch is automatically turned on and off by an outside air temperature sensor, a roof surface temperature sensor, or a timer.
In particular, by using an annual timer that can set the date and time throughout the year as described in claim 12, it is possible to obtain a device that does not require complicated control and does not forget to turn on or turn off the switch.

Further, according to the invention of claim 13,
The start and stop of the snow melting water drainage device may be configured to be performed by a temperature sensor that detects the temperature of the roof surface. In this way, the temperature sensor detects the temperature of the roof surface and automatically turns on the switch of the snow melting water drainage device.
/ OFF can be performed. The invention according to claim 14, wherein the heating element disposed on the roof is divided into a plurality of sections, and a drive circuit for energizing the heating element is provided for each section, and the heat generated by the drive circuit is provided. The configuration is such that switching means for switching the power supply to the body is provided. The switching of the energization may be performed at predetermined intervals, for example, every 30 minutes. With this configuration, power consumption per unit time can be reduced, which is economical.

Also, as described in claim 15,
The heating element disposed on the roof is divided into a plurality of sections, and a drive circuit for energizing the heating element is provided for each section, and the heating element and / or heat for preventing icing for each section are provided. The amount of electricity supplied to the body is made different depending on the icing condition on the roof. According to this configuration,
For example, an economical operation can be performed by reducing the amount of energization in a sunny part where freezing hardly occurs.

The invention according to claim 16 is configured such that a metal plate is disposed near the tip of the eaves or near the tip of the eaves, and the metal plate is heated by a heating element. With this configuration, it is possible to prevent icing at or near the tip of the eaves. In this case, the heating element that heats the metal plate may be a heating element that is separate from a heating element that secures a snowmelt water channel. It may be a heating element for securing.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. [First Embodiment] FIG. 1 is a perspective view illustrating a first embodiment of a snow melting water drainage device according to the present invention, and FIG. FIG. 3 is a schematic cross-sectional side view, and FIG. 3 is a schematic view for explaining the operation of the snow melting water drainage device of the present invention, and shows a cross section taken along the line II of FIG.

The roof 130 on which the snowmelt drainage device 100 of this embodiment is installed is a flat-roofed roof in which roof metal plates are attached in parallel. Between the flat plate and the flat plate,
Is provided. In addition, the roof 13 includes the roof 13.
The lower snow stopper 122 and the upper snow stopper 123 are attached above and below the zero. The snow melting water drainage device 100 includes a planar second heating element 125 provided near the lower snow stopper 122.
And a rain gutter 110 provided with a snow fall prevention plate 115 and a bracket 121 for supporting the rain gutter (drain passage) 110. The second heating element 125 is one known for preventing the freezing of snowmelt water near the eaves 131 or melting snow in the vicinity of the eaves, such as that disclosed in Japanese Patent No. 2,966,998. It can be attached to the roof 130 by using, for example. The second heating element 125 is mainly used for preventing the generation of the pumbling and the glazing, and when it is not necessary to freeze or melt the snow near the eaves.
May not be particularly provided.

As shown in FIG. 2, the snow fall prevention plate 115
It is formed from a plate-like member standing on the roof 130, and has a lower bent portion 115a at a lower end portion and an upper bent portion 115b at an upper end portion, each of which is bent so as to face the outside of the roof 130. Have been. This snow fall prevention plate 115
The lower end is the roof part 1 of the roof 130 by the bolt 133a.
32, and the upper end is the roof 1
It is supported by the bracket 121 so that it does not fall outside the 30.

An opening 124 for draining snowmelt water is formed between the lower end of the snowfall prevention plate 115 and the surface of the roof 130 so that the snowmelt water can flow into the rain gutter 110. I have. One end 121b of the bracket 121 is fixed to a bracket to which the lower snow stopper 122 is attached by a bolt 133b, and the other end 121a is formed in a U-shape and has an upper bent portion 11 of a snow fall prevention plate 115.
5b. The rain gutter 110 includes a rain gutter main body (drain passage main body) 111 attached along the eaves 131 of the roof 130, and an opening / closing lid 113 attached to the rain gutter main body 111 so as to shield an upper opening of the rain gutter main body 111.
And a snowfall prevention plate 115 attached to the opening / closing lid 113 and erected on the eave 131 of the roof 130, and a linear heat generation disposed in the rain gutter main body 111 and extending in the longitudinal direction of the rain gutter main body 111. And a body 112.

The surface of the roof 130 has
A first linear heating element 118 is looped between the 2 and the brim section 132 in a loop shape. The first heating element 118 is
The part located in the middle of the fly part 132 and the fly part 132,
It hangs down from the eaves 131 into the rain gutter main body 111.
In this embodiment, as shown in FIG. 2, the first heating element 118 is located on the upper side of the roof of the lower snow stopper 122 (on the right side of FIG. 2).
Then, it is attached to the bulge 132. First heating element 118
Can be fixed to the barb 132 by, for example, covering with an adhesive sheet and sticking. At this time, it is preferable that the first heating element 118 be passed through a protective tube for protecting the first heating element 118 and attached to the head 132. The cross-sectional shape of the first heating element 118 is not limited to a circular shape as shown in FIG. 3, and may be any of a rectangular shape, a polygonal shape, an elliptical shape, and an irregular shape. In addition, as shown by a virtual line in FIG.
Through the metal fitting that attaches the lower end of 5 to the eaves 131,
The first heating element 118 ′ may be attached to the fly 132.

First heating element 11 arranged as described above
8,118 'is preferably set to generate heat at a temperature (2 to 3C) slightly higher than the temperature (0C) at which the snowmelt water begins to freeze. Therefore, the first heating elements 118, 11
By energizing 8 ', as shown in FIG. 3, the frozen snow-melt water S around the first heating elements 118, 118' melts, and a tunnel-like shape along the first heating elements 118, 118 'is formed. A snowmelt water channel 119 is formed. The snowmelt water is supplied to the snowmelt channel 11
9, through the eaves 131 to the gutter main body 111,
Drained. Thus, the snow melting water drainage device 10 of the present invention
0, the second heating element 12 for preventing icing or melting snow
Even if the snowmelt water freezes at the eaves tip 131 or near the eaves tip 131 below 5, the snowmelt water channel 11 is contained in the frozen snowmelt water S.
9 can be secured. For this reason, snowmelt water can flow to the rain gutter main body 111 through the snowmelt water channel 119, and it is possible to prevent the formation of drifting and icicles due to the stagnation of snowmelt water at or near the eaves 131.

FIG. 4 is a block diagram of a control device for controlling the first heating elements 118 and 118 ′ and the second heating element 125 disposed on the roof 130. In this embodiment, as shown in FIG. 4, the roof 130 has two sections B1,
B2. The first heating element 118 and the planar second heating element 125 are provided in each of the two sections B1 and B2. Then, the first heating element 118 and the second heating element 125 disposed in each of the sections B1 and B2.
Independent drive circuits 161 and 162 are provided for each. Each of the sections B1 and B2 may be selected such that the power consumption of the first heating element 118 and the second heating element 125 is the same in each of the sections B1 and B2, or a sunny part. And may be selected in a sunny part.

The control device is provided between the controller 150 for switching between the driving circuits 161 and 162 and the controller 150 and the driving circuits 161 and 162 and the power supply P. And a main switch 153 for performing Further, the ON / OFF of the main switch 153 is performed at a preset timing.
A timer 152 for performing FF may be provided. This timer 1
52 can use a so-called annual timer that can set the date and time throughout the year. If such a timer 152 is used, for example, the main switch 153 is set to be turned on at midnight on December 1 in winter, and
The main switch 153 can be set to be turned off at midnight on the first day of the month. Main switch 153
It is preferable to determine the timing of turning ON and OFF the power supply with reference to the outside air temperature record in the ordinary year.

By doing so, the main switch 153 may be forgotten to be turned on in early winter, or the main switch 153 may be turned off in early spring.
Inconveniences such as forgetting to cut 3 can be prevented. Note that the main switch 153 is automatically turned ON or O
If the FF can be performed, other means such as a temperature sensor can be used instead of the timer 152.
When the temperature sensor is used, the main switch 153 is used when the outside air temperature or the temperature of the roof surface becomes lower than the freezing temperature.
Is turned on, and the main switch 153 is turned on when the outside air temperature or the roof surface temperature becomes higher than the freezing temperature.
What is necessary is just to set so that it may be set to FF. Further, the timer 152 and the temperature sensor may be provided in the controller 150 described below.

The controller 150 controls each drive circuit 16
1 and 162, and a timer 150b for switching the switch 150a at a preset time interval. By switching the switch 150a at intervals of, for example, 30 minutes, the energization of the heating elements 118 and 125 in the section B1 and the energization of the heating elements 118 and 125 in the section B2 can be alternately switched every 30 minutes. I can do it. By doing so, the power consumption per unit time can be reduced, and the operating cost of the snow melting water drainage device 100 can be reduced. Further, even if the roof 130 has a relatively large area, the power receiving capacity can be reduced, and the snow melting water drainage device 100 of the present invention can be installed.

Although not particularly shown, the timer 150
Instead of b, a temperature sensor that detects the temperature of the surface of the roof 130 may be provided, and a control unit that controls the amount of current supplied to each of the drive circuits 161 and 162 according to the temperature detected by the temperature sensor may be provided. Then, for example, the energization amount may be made different between a sunny part on the roof where the temperature is high and a shade part where the temperature is low. This makes it possible to operate the snow melting water drainage device 100 more economically. The number of divisions of the roof 130 is not limited to two, but may be three or more.

[Second Embodiment] FIG. 5 is a perspective view of a snow melting water drainage device according to a second embodiment of the present invention. Note that, in this embodiment, the same parts and members as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The roof 230 on which the snow melting drainage device 200 of the second embodiment is installed is a folded plate roof having a sawtooth cross section. In the snow melting drainage device 200 of the second embodiment, the linear heating element 218 is
Are located along the bottom of the valley between. Heating element 21
8 is the gutter main body 1 from the snow stopper 223 through the eaves 231.
11, is looped back in the gutter main body 111, and is directed toward the upper snow stopper 223 along a valley between the adjacent fly portions 232 and 232.

Conventionally, it has been difficult to provide a heating element for preventing icing or melting snow on such a folded-plate roof. In the present invention, the linear heating element 218 is connected to the
It can be easily arranged along the bottom of the valley between the two. And since a snowmelt waterway can be secured at the bottom of the valley, even in a folded-plate roof such as the roof 230, drainage of the snowmelt water can be performed smoothly, thereby effectively preventing the generation of puffing and icicles. Can be. In the second embodiment, the linear heating element 218 is extended from the eaves 231 to the snow stopper 223. However, this is because the snow blocked by the snow stopper 223 accumulates and freezes. This is because there is a possibility that the flow of snowmelt water may be hindered. Therefore, when there is no such fear, the linear heating element 21 is folded back by the snow stopper 222.
8 may be provided.

Third Embodiment FIG. 6 is a perspective view of a snow melting water drainage device according to a third embodiment of the present invention, and FIG.
It is the elements on larger scale which looked at the snow fall prevention board from the rain gutter main body 111 side of FIG. In this embodiment, the same parts and members as those of the second embodiment are denoted by the same reference numerals, and detailed description will be omitted. The roof 230 on which the snow melting drainage device 300 of the third embodiment is installed is the same folded plate roof as the second embodiment. In the snowmelt drainage device 300 of the third embodiment, the linear heating element 318 is provided with the lower snow stopper 222 along the bottom of the valley between the barb 232 and the barb 232.
Through the eaves 231 to the inside of the gutter main body 111.

As shown in FIG. 7A, an inverted trapezoidal shape is formed at the lower end of the snow fall prevention plate 115, which is a snow stopper in this embodiment, so that it can be inserted into the valley between the barbs 232 and 232. Metal plate 325 is attached. A gap is provided between the metal plate 325 and the bottom of the valley, through which snowmelt water can flow. In addition, the linear heating element 31
8, a linear heating element 327 is bridged from one of the adjacent metal plates 325 to the other metal plate 325 around the tip of the spat part 232 located at the tip of the eaves 231. And a part thereof is fixed to the surface of the metal plate 325 (the surface on the side of the rain gutter main body 111). Then, the metal plate 325 is heated by the heating element 327. This makes it possible to prevent freezing at or near the tip of the eaves 231 provided with the snow fall prevention plate 115. A linear heating element 3 is provided on a metal plate 325 provided at or near the tip of the eaves 231.
There is an advantage that the work of bridging the 27 can be performed relatively easily. In some cases, depending on local weather conditions, it is possible to secure a snowmelt drainage channel at the eaves 231 of the roof 230 using only the heating element 327. In such a case, the heating element 318 is particularly provided. It is not necessary. Also, as shown in FIG. 7B, a part of the linear heating element 318 is fixed to the surface of the metal plate 325 in a loop, and the heating element 318 heats the metal plate 325. By doing so, the heating element 327 can be omitted.

[Fourth Embodiment] FIG. 8 is a perspective view of a snow melting water drainage device according to a fourth embodiment of the present invention. Roof 4 on which snow melting water drainage device 400 of this embodiment is installed
Numeral 30 is a so-called radial folded-plate roof whose eaves protrude in an arc shape. A snow fall prevention plate 115 is erected between the arc-shaped overhanging portion 430a and the roof upper portion 430b constituting the roof 430, and furthermore, at the overhanging portion 430a between the snow fall prevention plate 115 and the rain gutter main body 111, A removable cover 435 is covered.

In this embodiment, a linear heating element 418 is provided between the bulges 432 and 432 of the overhanging portion 430a. The heating element 418 is disposed along the fly portion 432, and the tip of the eaves 431 (the overhang portion 430).
a from the lower end) to the inside of the rain gutter main body 111, and folded back inside the rain gutter main body 111 to form an adjacent fly portion 432,
You are heading to the valley between 432. Therefore, even if the snowmelt water is frozen at the overhang portion 430a, the roof portion 4
A snowmelt waterway can be secured along the heating element 418 extending from 30b to the gutter main body 111.

[0035] Further, a bulge portion 432 and a bulge portion 432 located between the overhang portion 430a and the roof upper portion 430b.
In between, the snow melting water drainage device 300 of the third embodiment,
Similar to 300 ', an inverted trapezoidal metal plate 425 is attached. A part of the linear heating element 418 is fixed to the surface of the metal plate 425, and the heating element 418
Thereby, the metal plate 425 is heated.
Although not specifically shown, also in this embodiment, as shown in FIG. 6, the metal plate 425 can be heated by a heating element different from the linear heating element 418. By doing so, it is possible to prevent freezing of snowmelt water between the overhanging portion 430a and the roof upper portion 430b.

Conventionally, such a radially folded plate roof 430
Although it was difficult to install a heating element for preventing icing or melting snow on the overhanging portion 430a of the present invention, the snow melting water drainage device 400 of the present invention can be easily applied to such an overhanging portion 430a of the radial folded plate roof. It is possible to install in. In this embodiment, as shown by the imaginary line in FIG. 8, a planar heating element 427 for preventing icing or melting snow similar to that of the first embodiment may be provided on the roof upper portion 430b. . In addition, instead of the linear heating element 418, a planar heating element 428 is provided as shown by a virtual line in FIG.
0a may be arranged.

[Fifth Embodiment] FIG. 9 is a perspective view of a snow melting water drainage device according to a fifth embodiment of the present invention. The roof 530 according to this embodiment includes an overhanging portion 5
Reference numeral 30a denotes a so-called nose-folded folded plate roof that bends linearly with respect to the roof upper portion 530b. Overhang part 5
A snowfall prevention plate 115, which is a snow stopper in this embodiment, is erected between the snowfall prevention plate 115 and the rain gutter main body 111, and is detachable between the snowfall prevention plate 115 and the rain gutter main body 111. Cover 535 is covered.

In this embodiment, a linear heating element 518 is provided between the bulges 532 and 532 of the overhanging portion 530a. The heating element 518 is disposed along the fly portion 532, and the tip of the eaves 531 (the overhang portion 530).
a from the lower end) to the inside of the rain gutter main body 111, and turned back inside the rain gutter main body 111 to form the adjacent bulge portion 532,
You are heading to the valley between 532. Therefore, even if the snowmelt water is frozen at the overhanging part 530a, the roof part 5
A snowmelt waterway can be secured along the heating element 518 extending from 30b to the gutter main body 111.

[0039] Also, a bulge portion 532 and a bulge portion 532 located between the overhang portion 530a and the roof upper portion 530b.
Between them, an inverted trapezoidal metal plate 525 is attached similarly to the snow melting water drainage device 400 of the fourth embodiment. Then, a part of the linear heating element 518 is fixed to the surface of the metal plate 525 (the surface on the side of the rain gutter main body 111), and the metal plate 525 is heated by the heating element 518. . By doing so, it is possible to prevent freezing of snowmelt water between the overhanging portion 530a and the roof upper portion 530b.

FIG. 10 shows a modification of the fifth embodiment. In the snowmelt water drainage device 500 'shown in FIG. 10, the linear heating element 518 is disposed so as to extend to the snow stopper 523, and goes around the rear of the snow stopper 523 (above the roof 530). The hair part 5 that straddles and crosses over the hair part 532
Heading to the valley between 32,532. And eaves 5
31 extends from the tip end (lower end of the overhang portion 530a) to the inside of the rain gutter main body 111, turns back inside the rain gutter main body 111, and faces the valley between the adjacent bulges 532 and 532. The number of the linear heating elements 518 passing through the valley between the seams 532 and 532 is two in the example of FIG. 9, but is one in this modification.

Further, similarly to the third embodiment, a linear heating element 527 different from the linear heating element 518 is used to remove the bulge portion 532 of the overhang portion 530a from one adjacent metal plate 525. It is straddled and bridged over the other metal plate 525, and a part thereof is fixed to the surface of the metal plate 525 (the surface on the rain gutter main body 111 side). In this way, the metal plate 525 can be heated by the heating element 527, and the freezing of snowmelt water between the overhanging portion 530a and the roof top portion 530b can be prevented. Conventionally, it has been difficult to install a heating element for preventing icing or melting snow on such a nose-folded plate roof. However, the snow-melting water drainage devices 500 and 500 'of the present invention employ such nose-folding folds. It can be easily installed on a flat roof. Also in the fifth embodiment, the linear heating element 518 is replaced with the one shown in FIG.
And a planar heating element 528 as shown by a virtual line in FIG.
May be arranged along the overhang portion 530a.

[Sixth Embodiment] FIG. 11 is a perspective view of a snow melting water drainage device according to a sixth embodiment of the present invention. The roof 130 of this embodiment is the same flat roof as the first embodiment. The basic configuration of the snowmelt water drainage device 600 is the same as the snowmelt water drainage device 10 of the first embodiment shown in FIG.
Same as 0. However, in the first embodiment, a linear heating element 118 is used, whereas in this embodiment, a planar heating element 618 is used. Planar heating element 6
Reference numeral 18 is provided between the barbs 132, 132 and extends from the lower snow stopper 122 to the eaves 131. Then, the tip thereof hangs down from the eaves 131 into the rain gutter main body 111. In this embodiment, the wide snowmelt channel is
0, and there is an advantage that a large amount of snowmelt water can be smoothly drained to the rain gutter 110. Although not specifically shown, one or a plurality of linear heating elements may be extended from the lower snow stopper 122 to the eaves tip 131 in place of the sheet-like heating elements 618.

[Seventh Embodiment] FIG. 12 is a perspective view of a snow melting water drainage device according to a seventh embodiment of the present invention. The roof 730 of this embodiment is the same flat roof as the first embodiment. The roof 730 has a box-shaped gutter (box gutter) 710 along the eaves 731. The box gutter 710 has a box gutter main body 711 attached to the eaves 131 and an opening / closing lid 713 attached to the box gutter main body 711 so as to be openable and closable. A signboard 715 and the like are attached to the front surface of the box gutter 710.

The planar heating element 718 extends from the L-shaped snow stopper 722 to the eaves 731 and hangs from the eaves 731 into the box gutter body 711. The total length of the heating element 718 along the vertical direction of the roof 730 is preferably 30 cm or more, and particularly preferably 50 cm or more. The length of the eaves 731 that hangs down is preferably about several cm. Further, a planar heating element 712 is provided at the bottom of the box gutter main body 711 so that the inside of the box gutter main body 711 can be warmed. The snowmelt water drainage device 700 of this embodiment includes a planar heating element 712, 71 on a roof 730 having a box gutter 710.
8 is easy to install, and the planar heating elements 712, 7
18 has the advantage that the snow-melted water can be efficiently melted and the snow-melted water can be discharged smoothly. Note that, also in this embodiment, it is possible to use a linear heating element as in the first embodiment. in this case,
As shown by a virtual line in FIG. 12, a linear heating element 718 ′ is suspended from the eaves 731 and disposed inside the box gutter main body 711, and the heating element 718 ′ is fixed by a fixing tool 719 above the roof.
May be fixed to the fly portion 732.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and various changes can be made within the scope of the present invention. For example, the heating element for preventing icing or melting snow (for example, the second heating element 125 shown in the first embodiment) disposed on the roof may be a planar heating element. According to this configuration, it is possible to prevent freezing of snowmelt water at the eaves portion and to perform snowmelt at the eaves portion, thereby reducing the load on the eaves portion and preventing damage to the eaves portion due to the load. There is an advantage.

Further, among the above-mentioned heating elements, the planar heating elements include a stainless steel tape heater, a stainless steel heater, an aluminum etching heater, a carbon heater, a self-temperature controllable carbon heater, a ceramic heater, a self-temperature controllable ceramic heater, A well-known thing, such as what processed the heating wire into a planar shape, can be used. Among them,
Stainless steel tape heaters and self-temperature controllable carbon heaters are particularly preferred. Further, as the linear heating element, a self-temperature controllable carbon heater, a self-temperature controllable ceramic heater, a heating wire, or the like is preferable.

Further, in the above embodiment, the heating element for forming the snowmelt water channel is described as extending to the inside of the rain gutter main body. However, by forming the snowmelt water channel to the eaves tip, the snowmelt water can be removed from the eaves tip. If the drainage can be surely performed, the heating element only needs to reach at least the tip of the eaves tip, and it is not always necessary to extend the heating element to the inside of the rain gutter main body.

[0048]

According to the apparatus for draining snowmelt water of the present invention, snowmelt water on the roof can be reliably drained to effectively prevent the formation of plows and icicles. In addition, the snow melting water drainage device of the present invention can be easily installed on roofs of any shape, so that the conventional icing prevention device or snow melting device is insufficient for the radial folded roof and the nose folded folding plate. Even on a roof having a complicated shape such as a roof, it is possible to effectively prevent the generation of a stunning or glaring.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining a configuration of a first embodiment of a snow melting water drainage device according to the present invention.

FIG. 2 is a sectional side view of the snow melting water drainage device of the first embodiment.

FIG. 3 is a schematic view for explaining the operation of the snow melting water drainage device of the present invention, and shows a cross section in the II direction of FIG. 1;

FIG. 4 is a block diagram of a control device that controls a linear heating element and a planar heating element disposed on a roof.

FIG. 5 is a perspective view of a snow melting water drainage device according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a snow melting water drainage device according to a third embodiment of the present invention.

FIG. 7 is a partially enlarged view showing an arrangement of a metal plate attached to a snow stopper and a heating element for heating the metal plate;
(A) shows a case where a heating element separate from a linear heating element for forming a snow melting water channel is fixed to a metal plate, and (b) shows a case where a linear heating element for forming a snow melting water channel is formed of metal. The figure shows a case where it is fixed to a plate.

FIG. 8 is a perspective view of a snow melting water drainage device according to a fourth embodiment of the present invention.

FIG. 9 is a perspective view of a snow melting water drainage device according to a fifth embodiment of the present invention.

FIG. 10 is a perspective view showing a modification of the fifth embodiment.

FIG. 11 is a perspective view of a snow melting water drainage device according to a sixth embodiment of the present invention.

FIG. 12 is a perspective view of a snow melting water drainage device according to a seventh embodiment of the present invention.

[Explanation of symbols]

 100-700 Snowmelt water drainage device 110-710 Rain gutter (drainage channel) 118-718 Heating element (for forming snowmelt water channel) 125 Heating element for preventing icing 130-730 Roof 111 Rain gutter main body (drainage channel main body) 112 Heat generation Body 113 Opening / closing lid 115 Snow fall prevention board 131-731 Eave 132-732 Balm

Claims (17)

[Claims] 1. A snow melting water drainage device for a roof for a cold region for draining snow melting water on a roof from an eaves tip, wherein at least a part of the frozen snow melting water is melted, and a snow melting channel is formed inside the frozen snow melting water. A heating element for securing the temperature is provided on the roof, and at least a part of the heating element is extended to a tip end of the eaves, the snow melting water drainage device for a roof for cold regions. 2. The apparatus according to claim 1, wherein the heating element is a linear heating element. 3. The drainage device according to claim 1, wherein the heating element is a planar heating element. 4. The snow melting on a roof for a cold region according to claim 1, wherein a second heating element for preventing icing or melting of the snow melting water is provided on the roof. Water drainage. 5. The snow melting water drainage device for a roof for a cold region according to claim 1, wherein the heating element is suspended from the eave tip by a predetermined length. 6. In a case where a rain gutter or a drain channel for draining the snow melting water is provided along the eaves, a part of the heating element is extended to the inside of the rain gutter or the drain channel. The snow melting water drainage device for a roof for a cold region according to claim 5, wherein: 7. The snow melting water drainage device for a roof for a cold region according to claim 1, wherein the heating element extends from the eaves to the snow stopper above the roof. 8. The snow melting water drainage device for a roof for cold regions according to claim 1, wherein the roof is a folded plate roof having a sawtooth cross section. 9. The roof according to claim 1, wherein the roof is a radially folded plate roof that bends in an arc shape at an eaves portion.
8. The snowmelt water drainage device for a roof for cold regions according to any one of claims 7 to 7. 10. The roof according to claim 1, wherein the roof is a nose-folded folded-plate roof that bends linearly at an eaves portion.
8. The snowmelt water drainage device for a roof for cold regions according to any one of claims 7 to 7. 11. The starting and stopping of the snow melting water drainage device,
The snow melting water drainage device for a roof for a cold region according to any one of claims 1 to 10, wherein the drainage is performed by a timer. 12. The timer according to claim 11, wherein the timer is an annual timer that can set a date and time throughout the year.
A snowmelt water drainage device for a roof for cold regions according to the item. 13. The starting and stopping of the snow melting water drainage device,
The snow melting water drainage device for a roof for a cold region according to any one of claims 1 to 10, wherein the temperature is measured by a temperature sensor that detects a temperature of a roof surface. 14. The heating element disposed on the roof is divided into a plurality of sections, and a drive circuit for energizing the heating element is provided independently for each section, and the heating element is driven by the drive circuit. Switching means for switching the energization of the power supply at predetermined time intervals.
13. The snow melting water drainage device for a roof for cold regions according to any one of 13). 15. The heating element provided on the roof is divided into a plurality of sections, and a drive circuit for energizing the heating element is provided for each section, and the heating element for each section is energized. The snow melting water drainage device for a roof for a cold region according to any one of claims 1 to 14, wherein the amount of energization to be performed is varied according to the icing condition on the roof. 16. The method according to claim 1, wherein a metal plate is arranged near the tip of the eaves or near the tip of the eaves, and the metal plate is heated by a heating element. Snow melting water drainage device for roofs in cold regions. 17. The apparatus according to claim 16, wherein the heating element for heating the metal plate is a heating element for securing a snowmelt water channel.