JP2001081710A - Antifreeze and snow melting structure of road - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently prevent freezing and fallen snow by burying a far infrared electric heater in the form of a sheet formed by sandwiching the electric heater between resin sheets mixed with a far infrared element in the pavement of a road, and mixing the far infrared element on the pavement material of the upper side from the far infrared electric heater member. SOLUTION: A far infrared electric sheet 30 is interposed between the finder course 21 and the surface course 22 of an asphalt pavement 20 executed on a base 10 in a prescribed thickness, and the far infrared element is blended on the asphalt of the surface course 22. A far infrared electric sheet 30 is formed by sandwiching a thin film sheet-like heater by a specific snow melting sheet as the resin sheet blending the far infrared element having the characteristic of high thermal conduction on polyvinyl chloride and the characteristic of warm keeping effect. When the electric thermal sheet 30 is electrified, the specific snow melting sheet emits far infrared rays, which are absorbed by the far infrared element mixing the far infrared rays on the surface layer 22 to be radiated. Thereby the freezing and fallen snow of the road can be efficiently melted by low power.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road freezing / snow melting structure for preventing freezing and snow accumulation on a road surface with little sunshine in winter.

[0002]

2. Description of the Related Art In winter, on roads with little sunshine, freezing and snow accumulation tend to occur on the road surface. Freezing of the road surface and snow cover can cause accidents and are extremely dangerous.

[0003] As a means for preventing such freezing and snow accumulation on the road surface, there is known a structure in which an electric heating element or a hot water circulation pipe is buried under the road surface.

[0004]

However, the conventional configuration in which an electric heating element or a hot water circulation pipe is buried under a road surface as described above has a problem that the equipment cost is high, the efficiency is low, and the economy is uneconomical. Was.

The present invention has been made in view of the above problems, and has as its object to provide a road freezing / snow melting structure that can efficiently prevent freezing and snow accumulation with a simple and low-cost configuration. I do.

[0006]

According to the present invention, there is provided a road freezing prevention and snow melting structure for achieving the above object, which is formed in a pavement of a road by sandwiching an electric heater between resin sheets containing a far-infrared ray element. A far-infrared electric heater member having a predetermined size is embedded in the sheet, and a far-infrared ray element is mixed in a pavement material above the far-infrared electric heater member.

Further, a far-infrared ray element is mixed into the pavement material of the road, and further comprises far-infrared ray irradiating means for irradiating far-infrared rays toward the road surface.

Further, a sheet-like far-red electric heater member of a predetermined size formed by sandwiching an electric heater between resin sheets containing far-infrared elements is embedded in pavement of a road, and the far-red electric heater member is embedded in the pavement. A far-infrared ray element is mixed with the pavement material above the red electric heater member, and is provided with a far-infrared ray irradiating means for irradiating far-infrared rays toward a road surface.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 conceptually shows a road in which an example of a road deicing / snow-melting structure according to the present invention is applied to an entrance to a tunnel opening on a northern slope where the sunshine is low and freezing and snow accumulation are likely to occur. It is a sectional perspective view.

The illustrated road 1 is provided with an asphalt pavement 20 having a predetermined thickness on a roadbed 10, which is composed of a base layer 21 and a surface layer 22, which are upper and lower layers.

In the anti-freezing / snow-melting structure, a far-infrared electric heating sheet 30 as a far-infrared electric heating member is interposed between the base layer 21 and the surface layer 22 of the asphalt pavement 20, and the asphalt of the surface layer 22 is not shown. A far-infrared ray element is blended, and further, a far-infrared ray lamp 40 as a far-infrared ray irradiating means is arranged on the road shoulder.

As shown in a conceptual cross-sectional view in FIG. 2, the far-infrared electric heating sheet 30 has a thin-film sheet heater 31 as an electric heating heater formed by laminating a foil-like electrode with a polyester heat-resistant polymer film. It is formed by sandwiching a special snowmelt sheet 32 as a resin sheet formed by mixing a far-infrared ray element having high thermal conductivity and a far-infrared ray element having a heat retaining effect in vinyl. The special snow melting sheet 32 keeps the heat generated by the sheet-shaped heater 31 (by acting on the included far-infrared ray element) and emits far-infrared rays.

Here, the far-infrared ray element is formed by mixing carbon, alumina, silica and the like at a predetermined ratio to form particles and absorb far infrared rays (wavelength: 4 μm to 999 μm) well.
It is set to radiate. For snow melting,
It is most preferable to set so as to absorb and emit far infrared rays in a wavelength range of 9.8 μm. This is because crystals of water such as snow and ice have the property of absorbing far infrared rays, and the peak of the absorption coefficient is at a wavelength of 9.8 μm. The absorption of far-infrared rays having a wavelength of 9.8 μm occurs due to resonance of water crystals, and the absorption of far-infrared rays increases the calorific value of the water crystals and rapidly dissolves the crystals. Far-infrared rays are electromagnetic waves and, unlike heat conduction, are effective even when the source and target are separated. Further, it is not necessary to heat the far-infrared ray element to a high temperature.

The far-infrared electric heating sheet 30 as described above is formed into a thin plate having a predetermined planar shape, and is provided with an adhesive or a fixing fitting in a corresponding planar-shaped accommodation recess 21A formed on the surface of the base layer 21. And is intermittently arranged at predetermined intervals, not entirely.

The laying of the far-infrared electric heating sheet 30 in the accommodation recess 21A is performed by arranging a template having a shape corresponding to the far-infrared heating sheet 30 at a predetermined position on the surface when laying the asphalt base layer 21. The accommodation recess 21A is formed by rolling up, and the far infrared heating sheet 30 is immovably fixed inside the accommodation recess 21A by an adhesive or by using a fixture.

The far-infrared lamp 40 has a lamp head 41 composed of a lamp 41A for emitting far-infrared rays and a reflector 41B located on the back, supported by a pole 42 having a predetermined height.
Far infrared rays emitted from the lamp 41A are directly or reflected by the reflection plate 41.
B is provided so as to reflect the light to B and irradiate the road surface.
Note that the arrangement structure is not limited to this, and can be changed as appropriate, such as being provided on a soundproof wall or a guardrail.

In the anti-freezing / snow-melting structure configured as described above, when the far-infrared electric heating sheet 30 is energized, far-infrared rays are emitted from the special snow melting sheet 32,
The far-infrared rays are absorbed and emitted by the far-infrared ray element mixed in the surface layer 22, and the far-infrared lamp 40 emits far-infrared rays toward the road surface. -It is melted and absorbed / emitted by the far-infrared ray element mixed with the surface layer 22 of the pavement 20. As a result, it is possible to efficiently thaw and freeze the snow on the road surface and snow with low power.

[0019]

As described above, according to the road freezing prevention and snow melting structure according to the present invention, the electric heater is formed between the resin sheets containing the far-infrared ray element in the pavement of the road. The far-infrared electric heater member is embedded with a sheet-shaped far-infrared electric heater member having a predetermined size, and a far-infrared ray element is mixed in a pavement material above the far-infrared electric heater member. When electricity is supplied to the vehicle, the far-infrared rays emitted from the resin sheet are absorbed and radiated by the far-infrared ray element mixed with the pavement material. With a simple and low-cost configuration, it is possible to efficiently prevent freezing and snow accumulation.

Further, a far-infrared ray element is mixed into the pavement material of the road, and far-infrared ray irradiating means for irradiating far-infrared ray toward the road surface is provided. The far-infrared light irradiated directly thaws and freezes the snow and snow on the road surface, and is absorbed and radiated by the far-infrared ray element mixed with the pavement material. With a simple and low-cost configuration, it is possible to efficiently prevent freezing and snow accumulation.

Further, a sheet-shaped far-infrared electric heater member of a predetermined size formed by sandwiching an electric heater between resin sheets containing far-infrared elements is embedded in the pavement of the runway. A far-infrared ray element is mixed into the pavement material above the red-electron heater member, and is configured with far-infrared irradiating means for irradiating far-infrared rays toward the road surface. The far-infrared rays emitted from the resin sheet are absorbed and radiated by the far-infrared ray element mixed with the pavement material, and the far-infrared rays emitted from the far-infrared ray irradiating means toward the road surface directly thaw the frozen road surface and snow. -It melts snow, and is absorbed and radiated by the far-infrared ray element mixed with the pavement material, so that it is possible to efficiently thaw and melt snow on the road surface and snow with low power. That is, it is possible to efficiently prevent freezing and snow accumulation with a simple and low-cost configuration.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view conceptually showing a road to which an example of a road freezing prevention and snow melting structure according to the present invention is applied.

FIG. 2 is a conceptual cross-sectional view of a far infrared heating sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road 20 Asphalt pavement (paving) 22 Surface layer (paving material above a red electric heater member) 30 Far red electric heating sheet (far red electric heating member) 31 Thin film sheet heater (electric heating) 32 Special snow melting sheet (resin sheet) 40 Far-infrared lamp (far-infrared irradiation means)

Claims (3)

[Claims] 1. A sheet-like far-red electric heater member having a predetermined size formed by sandwiching an electric heater between resin sheets containing far-infrared elements is embedded in a pavement of a road. A road freezing prevention and snow melting structure, wherein a far-infrared ray element is mixed in a pavement material above the red electric heater member. 2. A method for preventing freezing and snow melting on roads, wherein a far-infrared ray element is mixed into a pavement material of the road and a far-infrared ray irradiating means for irradiating far-infrared rays toward the road surface is provided. Construction. 3. A sheet-shaped far-infrared electric heater member of a predetermined size formed by sandwiching an electric heater between resin sheets containing far-infrared elements is embedded in pavement of a road. A road freezing prevention and snow melting structure comprising a far infrared ray irradiating means for irradiating far infrared rays toward a road surface, wherein a far infrared ray element is mixed into a pavement material above the red electric heater member.