JP2020133140A - Roof snow melting and cornice prevention method - Google Patents

Abstract

To provide a roof snow melting and cornice prevention method installable to a roof at low cost, and having low rubbing cost.SOLUTION: As snow melting and cornice prevention construction, belt-like or sheet-lie heating elements 12. 16 and heat-transfer sheets 13, 14 are laid on a roof tile 11. The construction can be carried out at low cost, and even through post-processing. Heat generated from a row of LED chips 12a consuming limited power is used as a heat source, and thus a freezing preventing and snow melting method can be implemented at low running cost. The row of the LED chips 12a is actuated by a DC power supply, and thus there is no possibility of electrical leakage or electrical shock. The row of the LED chips 12a is covered with a transparent soft polyvinyl chloride resin 12e to provide waterproofness, and energization of the belt-like or sheet-lie heating elements 12. 16 can be viewed by light of the LED chips 12a leaked from a gap between the heat-transfer sheets 13, 14, ad thus the belt-like or sheet-lie heating elements 12. 16 have high usability.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method for melting snow on a roof and preventing snow cornice from forming a cornice on the eaves by melting the snow on the roof.

Conventionally, various roof snow melting methods have been proposed. For example, Japanese Patent Application Laid-Open No. 1-122150 discloses a method in which a pipe is laid under a roofing material and hot water warmed by a heater is circulated in the pipe to melt snow.
Japanese Utility Model Registration No. 3207650 discloses a method of melting snow by circulating warm air from an air conditioner through a pipe laid under a roofing material.
Japanese Unexamined Patent Publication No. 2018-190741 discloses a method of laying a heat-generating sheet provided with a carbon nanotube layer that generates heat when energized on a roof to melt snow.

Actual Opening 1-122150 Utility Model Registration No. 3207650 JP-A-2018-190741

In the conventional snow melting method using hot water or hot air described above, piping work for laying pipes on the roof is indispensable, and installation costs and time are required.
Further, since the heat generating sheet provided with the carbon nanotube layer is expensive, the installation is also costly.

In view of the above problems, an object of the present invention is to provide a method for preventing snow melting and cornice on a roof, which can be installed on a roof at low cost and has a low running cost.

In the method for preventing snow melting and cornice of a roof according to the present invention, a strip-shaped or sheet-shaped heating element in which a plurality of LED chips are arranged and coated with a resin to impart waterproofness is laid on the roof material, and the LED chips emit light. It is characterized by melting the snow on the roofing material due to heat generation or preventing the formation of a cornice on the roofing material.

Then, preferably, the circuit element included in the lighting circuit of the LED chip is coated with the resin together with the LED chip, and the heat generated by the circuit element is used for snow melting and prevention of cornice.

Preferably, a translucent resin is used as the resin.

Preferably, a heat transfer sheet is laid on the roofing material, and a band-shaped or sheet-shaped heating element is laid on the heat transfer sheet.

Preferably, a band-shaped or sheet-shaped heating element is covered with a heat transfer sheet.

Preferably, a strip-shaped or sheet-shaped heating element is attached on the heat insulating sheet, and the heat insulating sheet is laid on the roofing material.

Further, preferably, a strip-shaped or sheet-shaped heating element is laid so as to extend from the ridge side to the eaves side along the slope of the roof.

According to the present invention, as a snow melting and cornice prevention work, it is only necessary to lay a strip-shaped or sheet-shaped heating element on the roofing material, so that the work can be carried out at low cost and by post-processing.

Since the heat generated by the LED chip, which consumes less power, is used as the heat generation source, it is possible to melt the snow at a low running cost and prevent the occurrence of a cornice. Moreover, since the LED chip operates with a DC power supply, there is no concern about electric leakage or electric shock.

If the LED chip is coated with a translucent resin, the light emission of the LED chip energizes the band-shaped or sheet-shaped heating element to visually indicate that the snow is being melted, which improves usability.

By also utilizing the heat generated by the circuit element, it is possible to more efficiently melt snow and prevent cornice.

If a heat transfer sheet is laid on the roof material and a band-shaped or sheet-shaped heating element is laid on it, the heat of the LED chip is transferred to a wide range of roofing material covered with the heat transfer sheet, so that snow melting and snow melting can be effectively performed. It is possible to prevent snow roofs.

If a heat insulating sheet is laid on the roof material and a strip-shaped or sheet-shaped heating element is laid on it, the heat of the strip-shaped or sheet-shaped heating element is transferred to the roof and transferred to the snow without escaping, thus preventing snow melting and cornice. The effect can be enhanced.

If a strip-shaped or sheet-shaped heating element is laid along the slope of the roof from the ridge side to the eaves side, the thawed water flows down from the eaves along the slope of the roof. Therefore, the snow cover disappears quickly, and the cornice does not occur at the eaves.

It is explanatory drawing which shows the roof to which the snow melting and the cornice prevention method which concerns on 1st Example of this invention are applied. It is explanatory drawing which shows the band-shaped heating element used for the snow melting and the cornice prevention method. It is sectional drawing which cut from the 3-3 line of FIG. It is a partially enlarged explanatory view of the roof to which the snow melting and cornice prevention method which concerns on 1st Example of this invention are applied. It is explanatory drawing which shows the roof to which the snow melting and cornice prevention method which concerns on 2nd Example of this invention are applied. It is a partially enlarged explanatory view of the roof to which the snow melting and cornice prevention method which concerns on 2nd Embodiment of this invention are applied. It is explanatory drawing which shows the sheet-shaped heating element used for the snow melting and the cornice prevention method which concerns on 3rd Example of this invention.

The present invention will be described below with reference to the drawings. FIG. 1 shows a roof 10 provided with a snow melting and cornice prevention method according to a first embodiment of the present invention. A folded plate 11 is laid on the roof 10 as a roofing material, and a plurality of strip-shaped heating elements 12 are laid on the valley portion 11a of the laid roof tile 11. The band-shaped heating element 12 extends from the ridge side 10a to the eaves side 10b along the slope of the roof.

As shown enlarged in FIGS. 2 and 3, the strip-shaped heating element 12 includes a flexible printed wiring board 12b on which a plurality of LED chips 12a are mounted. The plurality of LED chips 12a are arranged along the longitudinal direction of the flexible printed wiring board 12b to form a row of LED chips 12a. A power supply circuit 12c that converts household AC power to direct current, supplies required power to each LED chip 12a, and controls lighting of the LED chip 12a is connected to a flexible printed wiring board 12b via a power cord 12d. There is.

Both the front and back surfaces of the flexible printed wiring board 12b are coated with a thermoplastic transparent soft polyvinyl chloride resin 12e including the LED chip 12a mounted on the board 12b. In this resin 12e, the connection portion between the power cord 12d and the flexible printed wiring board 12b, that is, the electric wire 12f exposed from the vinyl insulator at the tip of the power cord 12d is soldered to the printed wiring 12g of the flexible printed wiring board 12b. The portion 12h is also covered.

The power cord 12d is originally waterproof, and the row of the flexible printed wiring board 12b and the LED chip 12a is covered with the resin 12e including the connection portion between the substrate 12b and the power cord 12d, so that it has a strip shape. The heating element 12 of the above is waterproof.

As shown enlarged in FIG. 4, a heat transfer sheet 13 made of a material having high thermal conductivity such as metal or silicon resin is attached to the folded plate 11, and a strip-shaped heat transfer sheet 13 is attached on the attached heat transfer sheet 13. A heating element 12 is laid. A heat transfer sheet 14 is further covered on the laid band-shaped heating element 12, and the covered heat transfer sheet 14 is attached to the band-shaped heating element 12 and the heat transfer sheet 13 below.

The structure of the roof 10 provided with the snow melting and cornice prevention method according to the first embodiment is as described above, and the power cord 12d is connected to a household power outlet installed indoors or outdoors to form a strip-shaped heating element 12. When the row of the LED chips 12a is made to emit light, the snow accumulated on the folded plate 11 is melted by the heat generated by the light emission, and it is possible to prevent the cornice from being generated at the eaves 10b.

According to the snow melting and cornice prevention method according to the present embodiment, it is only necessary to lay the strip-shaped heating element 12 and the heat transfer sheets 13 and 14 on the folded plate 11 as the snow melting and cornice prevention work, so that the cost is low. Moreover, it can be constructed by post-processing.

Since the heat generated by the row of the LED chips 12a, which consumes less power, is used as the heat generation source, the anti-freezing and snow melting methods can be implemented at a low running cost. Further, since the row of LED chips 12a is operated by a DC power supply, there is no concern about electric leakage or electric shock.

Since the band-shaped heating element 12 is provided with waterproofness by coating a row of LED chips 12a with a transparent soft polyvinyl chloride resin 12e, the light of the LED chips 12a leaking from the gaps between the heat transfer sheets 13 and 14 at the eaves. It is easy to use because it can be visually recognized that the band-shaped heating element 12 is energized.

Since the heat transfer sheet 13 is laid on the folded plate 11 and the band-shaped heating element 12 is laid on the folded plate 11, the heat of the row of the LED chips 12a is transferred to the folded plate 11 in a wide range covered with the heat transfer sheet 13, which is effective. It is possible to melt snow and prevent snow shelters.

Further, since the strip-shaped heating element 12 is laid so as to extend from the ridge side 10a to the eaves side 10b along the slope of the roof 10, the thawed water flows down from the eaves 10b along the slope of the roof 10. Therefore, the snow cover disappears quickly, and the cornice does not occur at the eaves 10b.

FIG. 5 shows a roof 20 provided with a snow melting and cornice prevention method according to a second embodiment of the present invention. A tin plate 21 is laid on the roof 20 as a roofing material, and a plurality of strip-shaped heating elements 12 are laid on the laid tin plate 21. The band-shaped heating element 12 extends from the ridge side 10a to the eaves side 10b along the slope of the roof 20.

As shown enlarged in FIG. 6, a heat insulating sheet 15 having heat insulating properties such as a resin foam material, a wood material, and a gypsum material is attached to the galvanized iron plate 21, and a heat transfer sheet 13 is attached to the heat insulating sheet 15. .. Then, a band-shaped heating element 12 is laid on the attached heat transfer sheet 13. A heat transfer sheet 14 is further covered on the laid band-shaped heating element 12, and the covered heat transfer sheet 14 is attached to the band-shaped heating element 12 and the heat transfer sheet 13 below.

According to the method for preventing snow melting and cornice according to the present embodiment, since the heat insulating sheet 15 is laid on the galvanized iron plate 21 and the band-shaped heating element 12 is laid on the heat insulating sheet 15, the heat of the band-shaped heating element 12 is transferred to the galvanized iron plate 21. It is transmitted to the snow without escaping due to heat, and the effect of preventing snow melting and cornice can be enhanced.

FIG. 7 shows a sheet-shaped heating element 16 used in the snow melting and cornice prevention method according to the third embodiment of the present invention. In the sheet-shaped heating element 16, a plurality of LED chips 12a are arranged vertically and horizontally on a flexible substrate 12b to form a planar light emitting surface. Further, a chip resistor 12k is provided in the lighting circuit of the LED chip 12a in order to prevent the LED chip 12a from being damaged by an overcurrent. The LED chip 12a and the chip resistor 12k are coated with the resin 12e to provide waterproofness.
Since the other configuration of the sheet-shaped heating element 16 according to this embodiment is the same as that of the strip-shaped heating element 12 shown in FIG. 2, the same components are designated by the same reference numerals and the description thereof will be omitted.

The configuration of the sheet-shaped heating element 16 used in the method for preventing snow melting and cornice according to the third embodiment of the present invention is as described above. By using this sheet-shaped heating element 16 for preventing snow melting and cornice, a short operation is performed. It can be laid over a wide area of the roof in time, facilitating construction work.
In this embodiment, the chip resistor 12k is coated with the resin 12e together with the LED chip 12a, but other circuit elements such as integrated circuits and transistors constituting the lighting circuit of the LED chip 12a are also coated with the resin 12e. The heat generated by them can also be used for melting snow.
Further, although the LED chips 12a are regularly arranged vertically and horizontally, it is also possible to arrange them irregularly to form a planar light emitting surface.

10 ... Roof 10a ... Building side 10b ... Eaves side 11 ... Folded plate 12 ... Band-shaped heating element 12a ... LED chip 12b ... Board 12c ... Power supply circuit 12e ... Resin 13, 14 ... Heat transfer sheet 15 ... Insulation sheet 16 ... Sheet shape Heating element 20 ... Roof 21 ... Galvanized iron plate

Claims (7)

A strip-shaped or sheet-shaped heating element that is made by arranging multiple LED chips and covering them with resin to provide waterproofness is laid on the roof material, and the heat generated by the light emission of the LED chips melts the snow on the roof material or the roof. A method for preventing snow melting and cornice on a roof, which comprises preventing the formation of cornice on a material. The roof snow melting and cornice according to claim 1, wherein the circuit element included in the lighting circuit of the LED chip is coated with the resin together with the LED chip, and the heat generated by the circuit element is used for snow melting and cornice prevention. Prevention method. The method for preventing snow melting and cornice on a roof according to claim 1, wherein a translucent resin is used as the resin. The method for preventing snow melting and cornice on a roof according to claim 1, wherein a heat transfer sheet is laid on the roof material, and a band-shaped heating element or a sheet-shaped heating element is laid on the heat transfer sheet. The method for preventing snow melting and cornice on a roof according to claim 1, wherein a heat transfer sheet is placed on a strip-shaped or sheet-shaped heating element. The method for preventing snow melting and cornice of a roof according to claim 1, wherein a band-shaped or sheet-shaped heating element is attached on the heat insulating sheet, and the heat insulating sheet is laid on the roof material. The method for preventing snow melting and cornice of a roof according to claim 1, wherein a strip-shaped or sheet-shaped heating element is laid so as to extend from the ridge side to the eaves side along the slope of the roof.

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