JPH1171707A - Road surface snow melting heater unit - Google Patents

Abstract

[PROBLEMS] To easily and inexpensively configure a heater buried road surface having a desired area and length by a very simple construction without any pavement work. SOLUTION: A heater 3 made of a heating wire is buried inside a plate-like block 2 which can form a continuous road surface by being juxtaposedly arranged on a road surface, and on both sides of the plate-like block 2. Are lead wire connecting portions 5 and 5 for electrically connecting the heater lead wires 4 and 4 of the adjacent blocks 2 and 2 to each other, and the connected heater lead wires 4 and 4 and the lead wire connecting portion. Notched space portions 6 and 6 capable of accommodating lead wires 5 and 5 are provided, and heater lead wires 4 and 4 are connected to lead wire connecting portions 5 and 5 by plate-like block 2.
Is set to a length that can be pulled out from the end face 2a of the base member 1 and connected to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater for melting snow on a road surface, which is used to heat snow melted on a road surface by a heating wire heater installed below the road surface to melt it and remove it as snowmelt. It is about a unit.

[0002]

2. Description of the Related Art When melting snow using a heating wire heater, a heating wire heater 21 having a wiring structure as shown in FIG. 6 is generally provided in a pavement 20 constituting a road surface as shown in FIG. Buried means are employed.

[0003]

However, in the case of the conventional road surface snow melting means as described above, the existing pavement is dug up and heated by the heating wire regardless of the size and length of the road surface where snow melting is required. Laying and construction of a new pavement require a lot of labor and cost. Also, if there is a pavement such as the above when there is a drain etc. in the lower part of the road surface,
There is a problem that the construction is more difficult and the construction cost is further increased.

The present invention has been made in view of the above-mentioned circumstances, and provides a road surface snow melting heater unit capable of forming a heater-embedded road surface having a desired area and length by a very simple construction without paving work. It is intended to provide.

[0005]

In order to achieve the above object, a road surface snow melting heater unit according to the first aspect of the present invention has a continuous road surface by being closely juxtaposed on a road surface. Inside the possible plate-shaped block, a heater made of a heating wire is embedded, and on both sides of the plate-shaped block, leads for electrically connecting the heater lead wires of the adjacently installed blocks to each other are provided. A wire connection part is provided.

According to the first aspect of the present invention having the above constitutional requirements, an arbitrary number of plate-like blocks are installed on an existing road surface, and the heater lead wires of the adjacently installed plate-like blocks are provided. While electrically connecting each other through the lead wire connection portion, by the very simple construction without the pavement construction such that the adjacent plate-shaped blocks are juxtaposed in a state where the end faces are closely attached, the desired area and It is possible to easily and inexpensively configure a long heater embedded road surface.

In the heater unit for melting snow on a road surface according to the first aspect of the present invention, the lead wire connecting portions on both sides of the plate-shaped block are directed outward from the end face of the block. Attached to the end of a heater lead wire having a drawable length, so that when the adjacent blocks are placed close to each other, the heater lead wire and the lead wire connection portion can be housed inside the end face of the block. By forming a cut-out space at the lower portion on both sides of the plate-shaped block, a space is secured between the end faces of the adjacent blocks before the adjacent blocks are brought into close contact with each other. After the blocks are installed in close contact with each other, the heater lead wires and the lead wire connection parts can be easily connected to each other. It can be accommodated in a notch-shaped space formed below the bottom of the vehicle, so that no gap is generated between the end faces of the adjacent blocks, or the gap is minimized to provide a continuous road surface that does not hinder the running of an automobile or the like. At the same time, it is possible to achieve a protection function for the heater lead wire and the lead wire connection part.

In particular, as described in claim 3, the heater lead wires on both sides of the plate-like block are shifted in the longitudinal direction of the end face which is in close contact with the adjacent block of the block, and are inserted into the cut-out space. When adopting the configuration to take out,
When installing adjacent blocks, both blocks can be shifted in the length direction of the end faces that are in close contact with each other, so that the electrical connection work between the lead wire connecting portions can be performed more easily, and the connection can be performed easily. The notch-shaped space for accommodating the subsequent heater lead wire and lead wire connection part is reduced, and the heater lead wire and the lead wire connection part are placed in a small space notch space while suppressing the reduction in strength of the plate-shaped block. Can be stored without causing any overhang.

[0009] In the heater unit for melting snow on a road surface according to the second or third aspect of the present invention,
As described in claim 4, a lead-shaped disconnection-preventing cord having a length shorter than the total length of both the lead wires and the connection portion in a state where the lead connection portions of the plate-like blocks placed adjacent to each other are connected to each other. When adopting a configuration in which metal fittings capable of fixing the ends of the body are attached to both sides of the plate-like block, the string-like body is stretched between the metal fittings of the plate-like blocks installed adjacent to each other so that the road surface can be prevented. Even if the blocks installed on the road are lifted off the road surface, or one block before installation is moved away from the other block, unreasonable pulling force is not applied to the heater leads, and unexpected Cutting can be prevented.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of a heater unit for melting snow on a road surface according to the present invention. The heater unit 1 is made of a material having mechanical strength and weather resistance, such as reinforced concrete, which sufficiently withstands the running of an automobile and is viewed in a plan view. And a plate-like block 2 which is formed into a rectangular plate-like shape, and a plurality of which are arranged side by side closely on a road surface to form a continuous road surface A (see FIG. 4) which allows a vehicle to travel or the like. A heater 3 made of a heating wire such as a nichrome wire buried in a zigzag shape so as to cover almost the entire area inside the plate-shaped block 2; And a lead wire connection part 5, 5 such as a one-touch connection type connector for electrically connecting the heater lead wires 4, 4 of the two blocks 2, 2 provided and installed adjacent to each other. Rannahli, the heater unit 1 is intended to be manufactured in the factory.

On both sides of the plate-like block 2 in the long side direction,
Notched space portions 6 and 6 are formed in the lower part of the short side direction, and the heater lead wires 4 and 4 on both sides in the long side direction are, as shown in FIG. The plate-shaped block 2 is taken out from the position shifted in the short side direction into each of the notched space portions 6 and 6. The heater lead wires 4, 4 have a length that can be pulled out from both end surfaces 2a, 2a in the long side direction of the plate-like block 2 and have a free end portion such as the one-touch connection type connector described above. The heater lead wires 4 and 4 and the lead wire connection portions 5 and 5 are attached.
When the adjacent plate-like blocks 2, 2 are installed in close contact with each other, as shown in FIG. 3, the notch-shaped space inside the long-side end faces 2a, 2a of both blocks 2, 2 It can be stored in the parts 6,6.

Further, the heater lead wires 4, 4 are formed in the cut-out spaces 6, 6 on both sides of the plate-like block 2 in the long side direction.
Near the take-out portion 4, metal fittings 8, 8 which can lock and fix the end of a lead-shaped wire 7 for preventing cutting of a lead wire such as a wire or a chain are attached. The lead wire cutting preventing cords 7 are connected to the two heater lead wires 4, 4 and the connection portion 5 in a state where the lead connection portions 5, 5 of the plate-like blocks 2, 2 placed adjacent to each other are connected to each other. , 5 are set slightly shorter than the total length.

Next, a description will be given of a construction procedure for forming a continuous road surface A buried with a heater by using the road surface snow melting heater unit 1 configured as described above. As shown in FIG. 4, a plurality of plate-shaped blocks 2 are installed on an existing road surface, and heater leads 4, 4 of adjacently installed plate-shaped blocks 2, 2 are connected to lead wire connecting portions 5, 5. By electrically connecting the plate-shaped blocks 2 and 2 adjacent to each other in such a manner that the end faces 2a and 2a facing each other in the long side direction are in close contact with each other, a desired area and length are obtained. A continuous road surface A buried with a heater that allows the vehicle to travel, for example, is formed. If there is snow on the continuous road surface A after construction, the heater 3 of each plate-shaped block 2 is energized to generate heat. Then, each plate-like block 2 is heated to melt the snow, and it is possible to remove the snow as melt water.

At the time of the construction of the continuous road surface A with the heater embedded therein, as shown in FIG. It is possible to secure a space indicated by W between 2a and 2a, and to draw out the heater lead wires 4 and 4 and the lead wire connecting portions 5 and 5 of both plate-like blocks 2 and 2 into this space W. Thereby, the electrical connection work between the lead wire connecting portions 5, 5 of the adjacent plate-like blocks 2, 2 can be easily performed. After the electrical connection work is completed, the adjacent plate-shaped blocks 2 are placed in close contact with each other so that their opposing end faces 2a, 2a come into contact with each other. , 4 and the lead wire connecting portions 5, 5 are changed to the postures shown in FIG.
6, so that no gap is generated between the end faces 2a, 2a of the adjacent plate-like blocks 2, 2 or the gap is minimized so as not to hinder the running of an automobile or the like. It is possible to provide a buried continuous road surface A, and also to achieve a protection function for the heater lead wires 4 and 4 and the lead wire connecting portions 5 and 5.

The plate-like blocks 2 and 2 installed adjacent to each other
The heater leads 4 and 4 in the notched space portions 6 and 6 of FIG.
The ends of the cords 7 for preventing the cutting of the lead wire such as a wire or a chain are respectively locked and fixed to the metal fittings 8 and 8 attached near the take-out portion, and the string 7 is placed between the metal fittings 8 and 8. By hanging over, the plate-shaped block 2 installed on the road surface is lifted from the road surface, or even if one plate-shaped block 2 before installation is moved in a direction away from the other plate-shaped block 2, The allowable range of the movement is limited by the length of the string-shaped body 7. Therefore, an unreasonable pulling force or the like is applied to the heater lead wires 4 and 4 to unexpectedly cut the heater lead wires 4 or the connected lead wires. The connection of the connection portions 5 and 5 is not accidentally disconnected.

In the above-described embodiment, the one-touch connection type connector is used as the lead wire connection parts 5 and 5. However, in addition to this, for example, a plate-like block having a connection form such as a socket and an outlet is used. 2 may be molded.

[0017]

As described above, according to the first aspect of the present invention, the heater leads of an arbitrary number of plate-like blocks installed on the existing road surface are electrically connected to each other via the lead wire connecting portions. Very simple construction without any pavement work, regardless of the size of the area or the presence of grooves for drainage, etc., only by laying the adjacent plate-shaped blocks side-by-side while connecting to Accordingly, there is an effect that a heater-embedded road surface having a desired area and length can be easily and at low cost.

Further, according to the second aspect of the present invention, a space is secured between the end faces of the adjacent plate-like blocks so that the electrical connection work between the lead wire connecting portions can be easily performed. After installation, the heater lead wire and the lead wire connection are housed in the cut-out space at the bottom of the plate-shaped block, so that no gap is generated between the end faces of adjacent blocks, or the gap is minimized for running automobiles etc. A continuous road surface without any hindrance can be provided, and a sufficient protection function can be achieved for the heater lead wire and the lead wire connection portion.

In particular, according to the third aspect of the present invention, it is possible to displace the adjacent plate-shaped blocks in the length direction of their end faces that are in close contact with each other, and to connect the lead wire connecting portions with each other. In addition to making the electrical connection work easier, the heater lead wire and the notch-shaped space for accommodating the lead wire connection part are made smaller, and the heater lead is reduced while reducing the strength of the plate-shaped block. The wire and the lead wire connection portion can be accommodated in the notch-shaped space portion of the small space without causing any protrusion or the like.

Further, according to the invention described in claim 4,
Even if the blocks installed on the road surface are lifted off the road surface or one block before installation is moved away from the other block, no excessive pulling force is applied to the heater leads, Inadvertent disconnection and inadvertent disconnection of the lead wire connection portion can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a road surface snow melting heater unit according to the present invention.

FIG. 2 is an enlarged plan view of a main part for explaining a situation at the time of lead wire connecting work of a plate-like block in an adjacent heater unit.

FIG. 3 is an enlarged plan view of a main part for explaining a situation when plate-like blocks in adjacent heater units have been installed in a close state.

FIG. 4 is a schematic plan view showing a constructed continuous road surface with embedded heaters.

FIG. 5 is a schematic perspective view showing an outline of a conventional heater embedded road surface.

FIG. 6 is an example of a wiring structure of a buried heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Snow melting heater unit on road surface 2 Plate block 3 Heating wire heater 4 Heater lead wire 5 Lead wire connection part 6 Notch-shaped space part 7 String for preventing lead wire cutting 8 Metal fitting

Claims (4)

[Claims] 1. A heater made of a heating wire is buried inside a plate-like block capable of forming a continuous road surface by being closely juxtaposed on a road surface, and on both sides of the plate-like block. A heater unit for melting snow on a road surface, further comprising a lead wire connecting portion for electrically connecting heater leads of adjacent blocks to each other. 2. A lead wire connecting portion on both sides of the plate-like block is attached to an end portion of a heater lead wire having a length that can be drawn out from an end surface of the block. The notch-shaped space part which can accommodate the said heater lead wire and a lead wire connection part inside the end face of a block when installed in close contact state is formed in the lower part of both sides of a plate-shaped block. Heating unit for snow melting on road surfaces. 3. The notch-shaped space portion wherein the heater lead wires on both sides of the plate-shaped block are shifted in the length direction of an end face which is in close contact with an adjacent block of the block and are taken out of the notched space portion. Heating unit for snow melting on road surfaces. 4. An end of a lead-cut prevention string having a length shorter than the total length of both the lead wires and the connection portion in a state where the lead wire connection portions of the plate-like blocks placed adjacent to each other are connected to each other. The heater unit for melting snow on a road surface according to claim 2 or 3, wherein metal fittings capable of fixing are mounted on both sides of the plate-like block.