JPH08152147A - Panel for floor heating - Google Patents

Abstract

PURPOSE: To provide a panel for floor heating which is satisfactory in heat resistance of a foamed heat-insulating body therein and in heating efficiency. CONSTITUTION: There are provided a heat-evolving body 1, a heat-leveling body 5, a joining body 6, and a foamed heat-insulating body 7. The heat-evolving body 1 is more or less tabular in shape, in which a heat-evolving line 2 consisting of a metal wire designed to evolve heat when charged with electricity and sheathed in an insulating member and having a substantially circular cross section is laid in a manner of a track in a zigzag patter. The heat-leveling body 5 is more or less tabular in shape, which is placed on the upper surface of the heat-evolving body and disperses heat evenly in conducting it upward. The joining body 6 is placed between the heat-leveling body and the heat- evolving body and joins the two bodies by thermal fusion. The foamed heat- insulating body 7 is of a polypropylene resin with closed cells, formed in a more or less tabular shape by a mold, has conduits 9 for holding the heat- evolving line in a buried state, and, placed under the heat-evolving body, resists the downward conduction of the heat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating panel which is arranged under the floor of a house or the like and warms the floor surface.

[0002]

2. Description of the Related Art As a floor heating panel A of this type, there is one shown in FIGS. This thing is a heating element 1
And a heat equalizing body 5, a connecting body 6, and a foamed heat insulating body 7. The heating element 1 is a line-shaped heating wire 2 arranged in a zigzag shape with a substantially circular cross section in which a metal wire that generates heat when energized is covered with an insulating member made of polyvinyl chloride resin or the like. Is formed. The heat equalizer 5 is made of metal and has a substantially flat plate shape. The heat equalizer 5 is on the upper surface of the heating element 1 and disperses and heats the heat upward to conduct the heat. The connecting body 6 is a soaking body 5 and a heating body.
Bonds 1 and consists of modified polyester resin, etc., and is fused by applying heat. The foamed heat insulator 7 is made of urethane resin or the like and has a substantially flat plate shape.
Has a groove 9 for burying. Also, 30 is a soaking sheet,
It is a thin aluminum plate whose one surface is coated with a vinyl chloride resin, and is arranged so that the coating surface faces the heat equalizer 5. Further, although not shown, in order to control the energization of the heating wire 2, the floor heating panel has an operating temperature of 6
A thermostat of 0 to 70 ° C is 3 to 5 per 1 m ^2.
About one piece is provided, and it works as an excessive temperature rise prevention device.

In this floor heating panel A, the coating surface of the heat equalizing sheet 30 is heat-fused to the insulating member of the heating wire 2, and is also heat-fused to the heat equalizing member 5 via the connecting member 6 so that It is formed by injecting the material of the foamed heat insulator 7 under the sheet 30 and curing it. During use, the heat generated in the heating wire 2 is directly conducted to the heat equalizing body 5, and the heat is also conducted by the heat equalizing sheet 30, so that the heat is efficiently transmitted to the heat equalizing body 5. be able to.

Another conventional example is shown in FIG. This is composed of a heating element 1 having a heating wire 2 and a soaking element.
5, a connecting body 6, and a wood fiber heat insulating body 31 having a groove portion 9 in which the heating wire 2 is embedded. In this floor heating panel A, the heat insulating body 31 can be easily manufactured, and the heating wire 2 can be easily arranged in the groove 9.

[0005]

However, in the former floor heating panel described above, when the portion other than the place where the thermostat is provided is partially insulated by a cushion or the like, it is partially insulated up to about 100 ° C. The temperature of the center part is increased. However, the urethane resin as the foamed heat insulating body has a temperature at which it can be continuously used at about 85 ° C., and the foamed heat insulating body may be thermally deteriorated depending on how the heat insulation is performed. Also, in the latter floor heating panel, since the heat insulator is in the form of wood fiber, in the case like the above, not only is the risk of heat deterioration higher, but also the thermal conductivity is large, so the heat generated by the heating wire is below the floor. It is easy to escape to and the heating efficiency is not good.

The present invention has been made in view of the above points, and an object thereof is to provide a floor heating panel in which the heat insulation of the foamed heat insulating material is good and the heating efficiency is high. .

[0007]

In order to solve the above-mentioned problems, the floor heating panel according to claim 1 has a substantially circular cross section and a line-shaped heat generation in which a metal wire that generates heat when energized is covered with an insulating member. A substantially flat plate-shaped heating element in which wires are arranged in a zigzag shape, a substantially flat plate-shaped uniform heating element on the upper surface of the heating element, which disperses and heats heat upward to conduct the heat, and the uniform heating element and heat generation A floor provided with a connecting body between the bodies for joining the two and a substantially flat foamed heat insulating body having a groove on the lower surface of the heat generating body for suppressing downward heat conduction and burying the heat generating wire In the heating panel, the foamed heat insulating body is made of polypropylene resin.

A floor heating panel according to a second aspect of the present invention has a structure in which the connecting body according to the first aspect is formed of a substantially flat plate-shaped adhesive member having a plurality of ventilation holes and adhesives laid on both sides. There is.

The floor heating panel according to a third aspect of the present invention is configured such that the groove portion of the foamed heat insulating body according to the first or second aspect is formed so that the depth thereof is slightly smaller than the outer dimension of the heating wire.

The floor heating panel according to a fourth aspect of the present invention is configured such that the outer periphery of the insulating member of the heating wire according to the first to third aspects is coated with a conductor having good thermal conductivity.

The floor heating panel according to a fifth aspect of the present invention has a structure in which the outer periphery of the heating wire according to the first to fourth aspects is covered with a fusion body that is fused to the connection body by heating.

The floor heating panel according to a sixth aspect of the present invention is configured such that the groove portion of the foamed heat insulating body according to the first to fifth aspects is formed such that the width thereof is slightly smaller than the outer dimension of the heating wire.

The floor heating panel according to a seventh aspect of the present invention has a structure in which a projecting gap preventing member having elasticity is provided on the lower surface of the foamed heat insulating body according to the first to sixth aspects.

[0014]

According to the structure of claim 1, since the foamed heat insulating body is made of polypropylene resin, the heat resistant temperature is high and the heat insulating performance is excellent.

According to the structure of claim 2, in addition to the function of claim 1, when the soaking body and the heating element are joined,
Since the air interposed therebetween escapes through the vent hole, the heat equalizer and the heat generator are surely brought into close contact with each other, and the heat of the heat generator is efficiently conducted to the heat equalizer.

According to the third aspect of the present invention, in addition to the effect of the first or second aspect, the heating wire is compressed by the heat equalizer and the foam heat insulator, so that the heat equalizer and the heat generator are The contact area is increased, and the heat of the heating element is efficiently conducted to the heat equalizing element.

According to the structure of claim 4, in addition to the effects of claims 1 to 3, the heat conducted to the lower part of the heating element by the conductor also goes to the upper part, so that the heat of the heating element is further increased. Conducts heat efficiently to a soaking body.

According to the structure of claim 5, in addition to the functions of claims 1 to 4, by heating the fusion body, the fusion body is melted and a gap between the heating wire and the heat equalizer is formed. Because of filling, the contact area between the heat equalizer and the heat generator is further increased, and the heat of the heat generator is more efficiently conducted to the heat equalizer.

According to the structure of claim 6, in addition to the effects of claims 1 to 5, the heating wire is fixed by press-fitting the heating wire into the groove of the foamed heat insulating body.

Further, according to the configuration of claim 7, in addition to the actions of claims 1 to 6, the gap preventing member is deformed according to the height of the installation place of the floor heating panel, so that the soaking temperature is uniform. The plate uniformly adheres to the floor plate on its upper surface.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. Members having the same basic functions as those described in the conventional example are designated by the same reference numerals.
FIG. 1 is a partial cross-sectional view of a floor heating panel A according to the present invention, in which a heating element 1 having heating wires 2 arranged in a zigzag pattern and a soaking element 5
The connecting body 6 and the foam heat insulating body 7 having the groove 9 are the main constituent members.

The heating element 1 is formed by arranging heating wires 2 that generate heat when connected to a commercial power source and energized in a zigzag shape, and is formed in a substantially flat plate shape. As shown in FIG. 2, the heating wire 2 is formed by spirally winding a metal wire 3 that generates heat when an electric current is applied to an insulating core material 2a, and uses polyvinyl chloride resin or the like as a material around the outer circumference thereof. The insulating member 4 is covered, has a substantially circular cross section, and is formed in a line shape.

The heat equalizer 5 is on the upper surface of the heating element 1 and has a substantially flat plate shape that disperses and heats the heat upward to conduct the heat.
For example, it is formed of a metal such as a colored galvanized steel plate. Specifically, in order to position and store a foamed heat insulating body 7 and the like, which will be described later, the soaking body 5 is not limited to the flat plate-shaped upper surface portion 5a, and
It has a side surface portion 5b bent downward at the end surface of the upper surface portion 5a.

The connecting body 6 is provided between the soaking body 5, the heat generating body 1 and the foamed heat insulating body 7 which will be described later, and joins these members. As the connecting body 6, for example, a film having a heat-fusible property, a double-sided adhesive material, an adhesive material or the like having a small thickness and a small heat resistance is used.

The foamed heat insulating body 7 is located on the lower surface of the heat generating body 1 to suppress downward heat conduction and to position and fix the heat generating wire 2. As shown in FIG. 3, the foam insulation 7 is made of polypropylene resin particles 8 having closed cells 8a.
Is molded with a mold and is formed into a substantially flat plate shape having closed cells 7a. Specifically, the upper surface 7b of the foamed heat insulator 7 has a zigzag-shaped groove portion 9 and is formed so as to be a flat skin layer having no irregularities other than the groove portion 9. The groove 9 is for embedding the heating wire 2, and is formed in a rectangular shape having a width and a depth in which the heating wire 2 is just buried. The groove 9 may be U-shaped or V-shaped in addition to the rectangular shape as shown in FIG. 1. Protrusions may be provided on the mold, or the foam insulation 7 may be cut out after molding with the mold. To form.

In such a floor heating panel, the heating wire 2 is embedded in the groove 9 of the foam heat insulating body 7, and then the upper surface 7b of the foam heat insulating body 7 is formed.
The heating element 2 and the heating wire 2 are joined to each other by joining the heat equalizing element 5 via the connecting element 6 to be integrated. This product has a heating wire in the groove 9.
Since 2 is embedded, its positioning is easy, and since the upper surface 7b of the foamed heat insulating body 7 is a flat skin layer, a strong joint strength with the heat equalizing body 5 can be obtained. Further, since the foamed heat insulating body 7 is formed of the resin having the closed cells 7a, the amount of heat conducted from the heating wire 2 to the foamed heat insulating body 7 side is reduced, and the heat generated in the heating wire 2 adheres closely. Since the heat is directly conducted to the heat equalizing body 5, high heating efficiency can be obtained.

FIG. 4 is a diagram showing the thermal conductivity and heat resistant temperature of polypropylene resin and other materials. Of the three types of foamed resin (polypropylene, polystyrene, polyurethane), only polypropylene resin has a heat resistant temperature of 100 ° C or higher, and polystyrene resin and polyurethane resin have a maximum temperature of 100 ° C as far as the heat resistant temperature is concerned. It is not suitable as a foam insulation for a simple floor heating panel. Further, comparing the thermal conductivity of the wood fiberboard and the foamed polypropylene resin, the heat conductivity of the foamed polypropylene resin is about ¼ of that of the wood fiberboard, and therefore, the foamed polypropylene resin is used as the heat insulating material. It is clear that the polypropylene resin is superior.

FIG. 5 is a modification of the first embodiment, in which the heating wire 2 has a temperature detecting function. This exothermic line 2
Is a metal wire 3 of the heating wire 2 of the first embodiment. The outer circumference of the metal wire 3 is covered with an organic heat sensitive member 10 having a characteristic that the impedance changes negatively according to temperature, and the outer circumference of the metal sensing wire 10 is made of metal. 11
Is wound in a spiral shape and the insulating member 4
Is provided. In this device, the temperature of the heating wire 2 can be detected by the detection wire 11 only by disposing the heating wire 2.

FIG. 6 shows another modification of the first embodiment, which is a connecting body.
6 is formed of a substantially flat plate-shaped adhesive member 14 made of an acrylic polymer resin or the like having a plurality of ventilation holes 12, 12, ... This is because when the floor heating panel is assembled, the air accumulated between the heat equalizer 5 and the adhesive member 14 or between the foamed heat insulator 7 and the adhesive member 14 is
Since it is formed so as to come out from the vent holes 12, 12, ..., Adhesion between the heating wire 2 and the heat equalizer 5 is improved.

The adhesive member 14 may be composed of a single layer of adhesive resin, or may be one in which an adhesive resin layer is provided on both sides of a base material such as nonwoven fabric. Further, the shape, size, and quantity of the vent holes 12 are not particularly limited as long as they fulfill the purpose of removing air.

Next, the second embodiment of the present invention will be described with reference to FIG.
A description will be given based on FIG. This has improved adhesion between the heating wire 2 and the heat equalizer 5.

The groove portion 9 of the foamed heat insulating body 7 is formed so that the depth thereof is smaller than the outer dimension of the heating wire 2 by x. By doing so, the heating wire 2 projects by x from the upper surface 7a of the foamed heat insulating body 7 at the stage of being buried in the groove portion 9. By compressing it with the heat equalizer 5, the insulating member 4 of the heating wire 2 is made of soft vinyl chloride resin, so that the insulating member 4 is embedded in the groove 9 in a deformed state as shown in FIG. As a result, the contact width w between the heat equalizer 5 and the heating wire 2 increases.

Therefore, since the heat of the heating wire 2 is efficiently guided to the heat equalizing body 5, the temperature of the heating wire 2 can be set low, so that the heat deterioration of the insulating member 4 and the foamed heat insulating body 7 can be reduced and the reliability can be improved. Property and durability are improved.

Next, the third embodiment of the present invention will be described with reference to FIG.
It will be described with reference to FIGS. In this embodiment, the adhesion between the heating wire 2 and the heat equalizer 5 is further improved.

Reference numeral 15 denotes a fusion body, which is the heating wire 2 of the second embodiment.
The insulating member 4 is coated on the outer periphery of the insulating member 4 and is fused to the soaking body 5 by heating. The fused body 15 is formed of, for example, polyethylene resin.

Since the depth of the groove portion 9 is smaller than the outer diameter of the insulating member 4 of the heating wire 2 by x, the thickness of the fused body 15 is t, so that the foamed heat insulating body 7 has Top
It projects by x + 2t from 7a. By compressing it with a soaking body 5 and heating it with a hot press, the insulating member 4 is embedded in the groove 9 in a deformed state, the fusion body 15 is melted, and the soaking wire 2 and the soaking line 2 are soaked. It adheres to the soaking body 5 so that the gap of the body 5 is filled. Therefore, the width at which the insulating member 4 contacts the heat equalizer 5 is w ₁ , and the width at which the fusion member 15 contacts the heat equalizer 5 is w _2.
Therefore, the heat of the heating wire 2 is more efficiently conducted to the heat equalizer 5.

Next, the fourth embodiment of the present invention will be described with reference to FIG.
And it demonstrates based on FIG. In this example, the heating wire 2
The assembling property of is improved.

The groove 9 of the foamed heat insulating body 7 is formed so that the width of the opening 9a is smaller than the outer diameter of the heating wire 2. In this case, the heating wire 2 is press-fitted and embedded in the groove portion 9, but as a result, the heating wire 2 is not easily detached and the assembling workability is improved. Further, since the opening 9a of the groove 9 acts to restore to the heating wire 2 side, when the fusion body 15 is heated by the hot press, the melted fusion body 15 is heated by the heating wire 2. Since it becomes easier to fill the gap between 2 and the heat equalizer 5, the heat of the heating wire 2 is more efficiently conducted to the heat equalizer 5.

Next, the fifth embodiment of the present invention will be described with reference to FIG.
And it demonstrates based on FIG. In this example, the heating wire 2
This makes it easier to transfer the heat of the above to the soaking body 5.

Reference numeral 16 is a conductor, which is a strip-shaped metal film made of aluminum foil or the like having high heat conductivity, and is wound around the insulating member 4 in a spiral shape. As shown in Figure 15,
The outer periphery of the conductor 16 may be further covered with the fusion body 15.

In this structure, the heat of the heating wire 2 is efficiently guided to the heat equalizer 5. That is, the portion of the outer periphery of the heating wire 2 that contacts the foamed heat insulator 7 has a higher temperature than the portion that contacts the heat equalizer 5 through the connector 6, but the conductor 16 having high thermal conductivity is wound around it. By mounting it, the heat of the portion in contact with the foamed heat insulating body 7 is promptly guided to the soaking body 5 via the conductor 16. In this way, the heat of the heating wire 2 is efficiently guided to the soaking body 5, so that the temperature of the heating wire 2 can be set low, so that the thermal deterioration of the insulating member 4 and the foamed heat insulating body 7 is reduced, and the reliability is improved. , Durability is improved.

The conductor 16 is not limited to the one made of a single metal, but may be made of, for example, an alloy of a plurality of metals, or a metal film and a resin film bonded together. Further, the conductor 16 is not limited to the spirally wound structure, and may have a structure in which the conductor 16 is covered along the length direction of the heating wire 2. Further, the fusion body 15 may be formed in advance on one surface of the metal film, and the fusion body 15 may be coated so as to be exposed on the outer peripheral surface of the heating wire 2.

Next, a sixth embodiment of the present invention will be described with reference to FIG.
It will be described with reference to FIG. In this embodiment, the adhesion between the floor heating panel A and the floor plate 21 on the upper surface thereof is improved.

Numeral 17 is a gap preventing member, which is made of a polypropylene resin which is integrally foamed with the foamed heat insulating material 7,
A plurality of protrusions are provided on the lower surface 7c of 7. The gap prevention member 17 has elasticity and is formed to have a height a little larger than the difference between the space between the floor plate 21 and the base floor material 18, which will be described later, and the thickness of the floor heating panel.

18 and 19 show the construction of the floor heating panel A. The floor heating panel A is laid between the small joists 19 attached to the upper surface of the base floor material 18, and the floor heating panel A is installed. A is fixed with a screw 20, a floor plate 21 which is a surface finishing material is laid on it, and is fixed with a screw 22 at a portion of the small joist 19. 23 is joist.

At this time, since the gap preventing member 17 is formed so as to have a height slightly larger than the difference between the space between the floor plate 21 and the base floor material 18 and the thickness of the floor heating panel A, the foamed heat insulating body is formed. Since it is compressed between the lower surface 7c of 7 and the base floor material 18 and works to lift the floor heating panel A, the upper surface portion 5a of the heat equalizer 5 of the floor heating panel A is in close contact with the floor plate 21 and heat is efficiently generated. Floorboard
Conducted to 21. Further, due to the close contact between the floor heating panel A and the floor plate 21, the temperature distribution of the floor plate 21 becomes close to uniform. Also,
Even when the floor heating panel A warps due to the temperature rise, the warp is absorbed by the gap prevention member 17, so that the thermal stress to each member is reduced and the friction noise between the members due to thermal expansion is reduced.

Although the gap preventing member 17 is made of the same material as the foamed heat insulating body 7 so as to be integrated therewith, it is not limited to this and may be made of a different material as a separate member. A material having elasticity and being compressed may be interposed between the lower surface 7c of the foamed heat insulating body 7 and the base floor material 18.

[0048]

In the floor heating panel according to the first aspect of the present invention, since the foamed heat insulating body is formed of polypropylene resin, the heat resistant temperature is high and the heat insulating performance is excellent. Therefore, even if the temperature of the heating element rises, it is thermally deteriorated. Less, and the heating efficiency is improved.

In addition to the effect of the first aspect, the floor heating panel according to the second aspect, when joining the soaking body and the heating element, the air interposed therebetween escapes through the vent hole, Since the soaking body and the heating element are surely brought into close contact with each other and the heat of the heating element is efficiently conducted to the soaking body, the heating efficiency is further increased.

Further, in the floor heating panel according to claim 3, in addition to the effect of claim 1 or 2, since the heating wire is compressed by the soaking body and the foamed heat insulating body, the soaking body and the heating body are Since the contact area is increased and the heat of the heating element is efficiently conducted to the heat equalizing element, the heating efficiency is further increased.

Further, in the floor heating panel according to the fourth aspect, in addition to the effects of the first to third aspects, the heat conducted to the lower side of the heating element by the conductor also goes to the upper side, and the heat of the heating element is further increased. Since the heat is efficiently conducted to the soaking body, the heating efficiency is further increased.

Further, in addition to the effects of the first to fourth aspects, the floor heating panel according to a fifth aspect of the invention heats the fused body to melt the fused body and form a gap between the heating wire and the heat equalizing body. Because of filling, the contact area between the heat equalizer and the heat generator is further increased, and the heat of the heat generator is more efficiently conducted to the heat equalizer, so that the heating efficiency is further increased.

In addition to the effects of claims 1 to 5, the floor heating panel according to claim 6 fixes the heating wire by press-fitting the heating wire into the groove portion of the foamed heat insulating body. Is improved.

According to the floor heating panel of claim 7, in addition to the effects of claims 1 to 6, the gap preventing member is deformed according to the height of the installation place of the floor heating panel.
Since the soaking plate is evenly attached to the floor plate on the upper surface thereof, the heating efficiency is further increased.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a floor heating panel showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the heating line.

FIG. 3 is a cross-sectional view of a polypropylene resin forming the foamed heat insulating body.

FIG. 4 is a diagram showing the thermal conductivity and heat resistant temperature of the polypropylene resin.

FIG. 5 is a perspective view of a heating wire showing a modification of the first embodiment.

FIG. 6 is a perspective view of a connection body showing another modification of the first embodiment.

FIG. 7 is a partial cross-sectional view of a floor heating panel before assembly showing a second embodiment of the present invention.

FIG. 8 is a partial cross-sectional view of the floor heating panel after the assembly.

FIG. 9 is a perspective view of a heating line of a floor heating panel showing a third embodiment of the present invention.

FIG. 10 is a partial cross-sectional view of the floor heating panel before its assembly.

FIG. 11 is a partial cross-sectional view of the floor heating panel after the assembly.

FIG. 12 is a partial cross-sectional view of a floor heating panel before assembly showing a fourth embodiment of the present invention.

FIG. 13 is a partial cross-sectional view of the floor heating panel after the assembly.

FIG. 14 is a perspective view of a heating line of a floor heating panel showing a fifth embodiment of the present invention.

FIG. 15 is a perspective view of a heating wire showing a modified example thereof.

FIG. 16 is a perspective view of a floor heating panel according to a sixth embodiment of the present invention as seen from below.

FIG. 17 is a sectional view of the floor heating panel.

FIG. 18 is a plan view of the floor heating panel during construction.

FIG. 19 is a cross-sectional view of the floor heating panel during construction.

FIG. 20 is a perspective view of a floor heating panel showing a conventional example of the present invention.

FIG. 21 is a perspective view of the floor heating panel viewed from below.

FIG. 22 is a partial cross-sectional view of the floor heating panel.

FIG. 23 is a partial cross-sectional view of a floor heating panel showing another conventional example.

[Explanation of symbols] A Floor heating panel 1 Heating element 2 Heating wire 3 Metal wire 4 Insulation member 5 Uniform heating body 6 Coupling body 7 Foam insulation 9 Groove 12 Vent hole 14 Adhesive member 15 Fusion body 16 Conductor 17 Preventing gap Material 18 Base floor material 21 Floor board

Claims (7)

[Claims] 1. A substantially flat plate-shaped heating element in which metal wires that generate heat when energized are covered with an insulating member, and substantially line-shaped heating wires having a substantially circular cross section are arranged in a zigzag shape, and an upper surface of the heating element. And a substantially plate-shaped heat equalizer that disperses and equalizes heat upward and conducts the heat, a connecting body that joins the heat equalizer and the heating element, and joins the heat equalizer and the heating element. A floor heating panel comprising: a substantially flat plate-shaped foamed heat insulator having a groove portion for suppressing heat conduction and for burying a heating wire, wherein the foamed heat insulator is formed of polypropylene resin. panel. 2. The floor heating panel according to claim 1, wherein the connecting body is formed of a substantially flat plate-like adhesive member having a plurality of ventilation holes and adhesives laid on both surfaces. 3. The floor heating panel according to claim 1, wherein the groove portion of the foamed heat insulating body is formed so that the depth thereof is slightly smaller than the outer dimension of the heating wire. 4. The conductor having good thermal conductivity is coated on the outer periphery of the insulating member of the heating wire.
The floor heating panel according to 1 to 3. 5. The floor heating panel according to claim 1, wherein an outer periphery of the heating wire is covered with a fusion body which is fused to the connection body by heating. 6. The floor heating panel according to claim 1, wherein the groove portion of the foamed heat insulating body is formed so that its width is slightly smaller than the outer dimension of the heating wire. 7. The floor heating panel according to claim 1, wherein a protruding gap preventing member having elasticity is provided on the lower surface of the foamed heat insulating body.