JPS6231989Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an improvement of a roof heater that is placed under a long roof iron plate and heated with electricity in snowy and cold regions to prevent snow and ice formation at the eaves and prevent icicles from forming at the eaves. As shown in the figure, in a roof heater in which a surface heating element is sandwiched between protective sheets, a protective film 1 made of aluminum foil laminated with polyethylene on one side is coated with a foamed synthetic resin such as foamed polypropylene. A protective sheet 2 is pasted, a circuit is formed by etching a metal foil such as aluminum foil on top of the protective sheet 2, and a film-like planar heating element 3 is pasted and laminated on both sides of which are sandwiched and insulated with a near-laminate film. At the same time, a protective iron plate 4 is adhered and covered with an adhesive film 5 on the surface thereof, and a near-laminate film 6 made of polyethylene polyester or the like printed with display characters etc. is further covered on the upper surface to form an integrated sheet a. The upper edge of the sheet a is formed into a nailing band b excluding the planar heating element, and a junction box c is provided in one corner in which a connection part 8 between the planar heating element 3 and the power cable 7 is housed. be. 9 indicated earth.

This application has the structure as described above, and during construction, it is laid on top of the roof sheathing board, and on top of that, a long iron plate is installed to complete the construction of the roof surface.
The entire sheet is one sheet, and the protective iron plate is embedded within the plastic film, so there is no need for anti-corrosion treatment, so you can use an inexpensive iron plate, and the connection box is only one side, so the material and assembly costs are low, and there are various precautions. The display is printed entirely on the near-laminate film on the surface, so there is no need for separate display labels, resulting in a beautiful finish.
In addition, since the inside of the film is printed, the surface will not rub off and the display will not disappear, allowing a clear display to be maintained.The upper and lower protective iron plates are integrated, so only one plate needs to be installed, making it easy to set up the nailing belt. Therefore, construction is extremely easy and reliable, and since the protective sheet is made of flexible materials such as foamed polypropylene and foamed polyethylene, it is soft throughout and easily conforms to the underlying roofing board, and the protective sheet does not touch the surface. Since the heating element does not come out and everything goes inside the plastic film, it is isolated from the outside air and does not rust, and the sheet heating element and the upper protective iron plate are bonded together with an adhesive film.
It has good thermal conductivity, and since the lower protective sheet is made of foam, it has good insulation, blocks heat downwards, and increases heat conduction upwards, resulting in extremely high thermal efficiency.

Furthermore, the upper protective iron plate and lower protective film are made of conductive material such as iron aluminum and are grounded, so even if the insulation of the sheet heating element breaks down, there will be no leakage of current to the roofing material. It is extremely safe as it can be prevented.

As described above, according to the sheet of the present invention, construction is easy and reliable, extremely flexible, the rust prevention effect of the protective iron plate is large, the product image is improved, material costs and assembly costs are both low, thermal efficiency is extremely high, and safety is achieved. It has the effect of increasing wealth.

[Brief explanation of the drawing]

The drawings show the product of the present invention; FIG. 1 is an overall perspective view, FIG. 2 is a sectional view of the main part, and FIG. 3 is a sectional view of the junction box. 1 is a protective film, 2 is a protective sheet, 3 is a planar heating element, 4 is a protective iron plate, 5 is an adhesive film, 6 is a near laminate film, 7 is a power cable, 8
1 shows a connection part, a shows a sheet body, b shows a nailing band, and c shows a connection box.

Claims (1)

[Scope of utility model registration request] A film in which a protective sheet 2 made of foamed synthetic resin is pasted on a protective film 1 made of aluminum foil, a circuit is formed by etching metal foil on top of the protective sheet 2, and both sides are sandwiched and insulated with a near-laminate film. A sheet heating element 3 of the shape of the shape is formed into an adhesive layer, a protective iron plate 4 is adhered and coated on the surface thereof with an adhesive film 5, and the upper surface is further covered with a near-laminate film 6 on which display characters are printed. The upper edge of the sheet a is a nailing strip b excluding the sheet heating element, and a junction box c containing a connection part 8 between the sheet heating element 3 and the power cable 7 is placed in one corner. Roof heater provided.