JP2005241141A - Floor heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the deformation of an underfloor in accompany with thermal expansion of an electrically-heated mat and to improve the installability of an electric floor heating device. <P>SOLUTION: In this floor heating device comprising the electrically-heated mats 11a, 11b mounted on an underfloor base plate 1, a peripheral mat 12 mounted at the circumference of the electrically-heated mats, a floor plate 18 laid on the electrically-heated mats and the peripheral mat, and a controller 20 for electrically controlling the electrically-heated mats, the electrically-heated mats respectively have electric heater wires on their surfaces or inside thereof, and have small joists 17a, 17b at positions not overlapping with the electric heater wire. The peripheral mat is made out of a flexible base material, and has a thickness approximately same as that of the electrically-heated mat in such a state that the floor plate is laid. The peripheral mat having a second joist on a surface of the flexible base material or an integrated electrically-heated mat wherein the peripheral mat is continuously formed integrally with the electrically-heated mat, may be used. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electric floor heating apparatus.

  As a conventional electric floor heating device, as described in Patent Document 1 below, electric heating having a heater sheet laminated on a flexible substrate and a small joist laminated on the heater sheet One with a mat is known.

When this floor heating apparatus is installed in a room, the electric heating mat is placed on the floor base plate of the room, and the electric heating mat is fixed to the floor base plate with screws at the position of the small joists. The electric heating mat is smaller than the floor of the room, and when the electric heating mat is placed on the floor base plate, there is a part where the electric heating mat is not laid between the electric heating mat and the wall of the room. Peripheral panels such as plywood with approximately the same thickness as the electric heating mat are provided. Furthermore, a floor heater is installed by laying a floor board on the electric heating mat and the peripheral panel.
JP 2003-166720 A

  According to the above-described conventional floor heating apparatus, when electric power is supplied to the electric heating mat and the temperature thereof rises, the temperature of the peripheral panel provided between the electric heating mat and the wall of the room also rises. If the temperature of the peripheral panel rises excessively, it will thermally expand and cause deformation due to pressure on the electric mat or pushing it up to the floor, so generally it is between the electric mat and the peripheral panel and between the peripheral panels. In order to prevent the above problems from occurring, a gap of about several millimeters is provided in the construction.

  However, on the other hand, when laying the peripheral panel, it is necessary to consider the size and arrangement of the panel, which causes a problem that it takes a lot of work.

  Accordingly, an object of the present invention is to prevent the floor plate from being deformed due to thermal expansion due to the temperature rise of the electric heating mat in the electric floor heating apparatus, and to improve its workability.

  In order to achieve the above object, a floor heating apparatus according to a first aspect of the present invention includes an electric heating mat disposed on a floor base plate, a peripheral mat provided around the electric heating mat, the electric heating mat, and the peripheral mat. And a controller for electrically controlling the electric heating mat. The electric heating mat has an electric heater wire on the surface or inside thereof and a small joist provided at a position not overlapping the electric heater wire. The peripheral mat is formed of a flexible base material and is formed to have substantially the same thickness as the electrothermal mat in a state where the floor board is laid.

  According to a second aspect of the present invention, in the floor heating apparatus according to the first aspect, the peripheral mat has a second small joist on the surface of the flexible base material.

  According to a third aspect of the present invention, in the floor heating apparatus according to the first or second aspect, the peripheral mat is continuously formed integrally with the electric heating mat.

  The floor heating apparatus of the present invention heats a floor board using electric energy, and thereby heats the upper space of the floor board.

  As described above, the floor heating apparatus according to the present invention includes an electric heating mat, a peripheral mat, a floor board, and a controller.

  The electric heating mat has a base material, an electric heater wire, and a small joist. The substrate is preferably formed of an elastic material such as a nonwoven fabric, a net-like sheet, paper, a perforated sheet, etc., and its thickness is generally about several mm, and electric heater wires meander on its surface or inside. It is provided in the shape. Furthermore, it is preferable to provide a heat sensitive wire in a meandering manner along the electric heater wire. By providing the heat sensitive wire, the controller can prevent overheating of the electric heater wire. The electric heater wire and the heat sensitive wire wired in a meandering manner in the electric heating mat enter and exit a wiring box provided in the electric heating mat.

  In the electric heating mat, it is preferable to use a heat dispersion sheet in an overlapping manner on the electric heater wire. The heat dispersion sheet is preferably provided on the entire surface of the electrothermal mat. The thickness of the electric heating mat is, for example, 3 mm when the electric heating mat is sandwiched between the floor base plate and the floor plate, and the heat dispersion sheet and the base material are compressed. This thickness is the sum of the thickness of the small joist, the thickness of the compressed heat dispersion sheet, and the thickness of the compressed substrate.

  The electric heating mat is further provided with a small joist on the electric heating mat at a position where it does not overlap with the electric heater wire and the heat sensitive wire, thereby preventing the load from above directly acting on the heater wire and the heat sensitive wire. Protect the electric heater wires and heat sensitive wires. The small joists are temporarily fixed to the electric heating mat with an adhesive or double-sided tape. The shape of the small joist is not particularly limited, but generally, an elongated or strip-like thin plate or rod-like material is used. Small joists are made of wood such as plywood, wood board, wood fiber board (MDF, etc.), wood chipboard, and single board laminated board, as well as metal materials such as synthetic resin, iron, copper, and aluminum alloy. Alternatively, a profile or the like can be used. When the small joist is provided on the base material or the heat dispersion sheet, the place where the electric heating mat is fixed to the floor base plate with a nail or a screw in the small joist is clarified, and the nail It is also possible to prevent the electric heater wire and the heat sensitive wire from being damaged by screws and screws. The small joists are preferably provided at a predetermined interval so that the electric heating mat before use in the floor heating apparatus can be rolled and stored.

  The peripheral mat is provided on the floor base plate between the electric heating mat and the wall surface of the room, and is provided at least around the electric heating mat side, but may be provided over the entire surface of the floor base plate between the electric heating mat and the wall surface. . In the case where the peripheral mat is provided only on the periphery of the electric heating mat side, a peripheral panel such as a plywood is further provided in the remaining portion of the periphery.

  The peripheral mat is formed of a flexible base material and is compressed in a state where the floor board is laid, and is formed to have substantially the same thickness as the electric heating mat, so that the floor board becomes flat in the laid state. It is preferable to arrange the second small joist on the surface of the flexible base material to constitute the peripheral mat, since the flatness of the floor board in the laid state is further improved. The second small joist in the peripheral mat is preferably the same material as the small joist in the electric heating mat. The second small joists in the peripheral mat may be provided at the same interval as the small joists in the electric heating mat (the pitch between the small joists), or the pitch of the second small joists may be reduced. You may arrange | position adjacent so that 2nd small joists may contact. In either case, like the electric heating mat, the peripheral mat can be rolled and stored. Further, as in the electric heating mat, the second small joist is also temporarily fixed to the peripheral mat with an adhesive or a double-sided tape.

  The peripheral mat may be configured as a member independent of the electric heating mat, but may be formed integrally with the electric heating mat. By forming the peripheral mat integrally with the electrothermal mat, the workability is further improved. In the case of integral formation, the small joist on the electric heating mat side can be extended to the peripheral mat side at a portion that does not intersect with the electric heater wire to form a second small joist. Further, in this case, the periphery of the integrated mat in which the electric heating mat and the peripheral mat are continuous is cut out according to the size of the room.

  According to the floor heating apparatus of the present invention according to claim 1, since the peripheral mat formed of a flexible base material is laid around the electric heating mat, a conventional peripheral panel such as a plywood is laid. Thus, it is not necessary to provide a predetermined fine gap while taking into account the size and arrangement, and workability is improved.

  Further, even if the peripheral mat thermally expands due to the temperature rise of the electric heating mat, the flexibility of the base material does not cause the electric heating mat to be deformed by being pressed or pushed up to the floor board.

  Furthermore, since the electric heating mat is not compressed and deformed by the thermal expansion of the peripheral mat, the electric heating mat can maintain a predetermined shape, and the heat transfer efficiency to the floor board is maintained.

  According to the floor heating apparatus of the present invention according to claim 2, since the peripheral mat has a structure having the second small joist on the surface of the flexible base material, in addition to the above-described effects, the electrothermal mat In addition, it is easy to make the peripheral mat substantially the same thickness as the electric heating mat in a state where the floor plate is laid on the peripheral mat, and the flatness of the floor plate can be improved.

  According to the floor heating device of the present invention according to claim 3, since the peripheral mat is continuously formed integrally with the electric heating mat, it is not necessary to construct the peripheral mat independently, and the workability is further improved. .

  Hereinafter, an embodiment of a floor heating apparatus according to the present invention will be described with reference to the accompanying drawings.

  1 to 5, this floor heating device 10 is provided around an electric heating mat 11 (a pair of electric heating mats 11 a and 11 b) disposed on the floor base plate 1 and the electric heating mat 11. A peripheral mat 12 disposed on the floor base plate 1, the electric heating mat 11, a floor plate 18 laid on the peripheral mat 12, and a controller 20 that electrically controls the electric heating mat 11 are provided.

  The floor base plate 1 is laid on the joists 3, and between the joists 3 is filled with a heat insulating material 4 such as polystyrene foam. The floor base plate 1 supports the load applied to the floor plate 18 through the electric heating mats 11a and 11b and the peripheral mat 12, and the wood material such as plywood, wood board, wood fiber board (MDF, etc.) is generally used as the material. The The thickness of the floor base plate 1 is selected from a range of 12 to 30 mm, for example.

  Each of the electric heating mats 11a and 11b is made of a non-woven fabric 13 having elasticity, and on its surface, electric heater wires 14 and heat sensitive wires 15 are provided in a meandering manner. It has a small joist 17 (17a, 17b) juxtaposed with each other (FIG. 3). The heat sensitive wire 15 is arranged so as not to overlap with the heater wire 14, and controls the heating temperature by the heater wire 14 via a controller 20 described later and senses and prevents abnormal overheating. The electric heating mats 11a and 11b have a common wiring box 23 in which terminals of the electric heater wire 14 and the heat sensitive wire 15 are gathered.

  An example of the heat dispersion sheet 16 is, as shown in FIG. 4, a thin plate (copper foil, aluminum, etc.) having heat conductivity and flexibility on the surface of a base material sheet 16a such as a nonwoven fabric, a net having a certain degree of heat resistance, and paper. A foil or the like) having a two-layer structure in which 16b is laminated and adhered. As another example, it is possible to use a three-layer structure in which the base sheet is used on the front and back, and a thin plate having thermal conductivity and flexibility is sandwiched between them and laminated and adhered and integrated. The heat dispersion sheet 16 is provided on the entire surface of the nonwoven fabric 13 via the electric heater wire 14 and the heat sensitive wire 15, and the heat generated by the electric heater wire 14 is dispersed in a plane and efficiently transmitted to the floor board 18.

  In the electrothermal mats 11 a and 11 b, a plurality of small joists 17 are provided in parallel to each other on the surface side of the base material 13, in this embodiment, on the surface of the heat dispersion sheet 16. The small radish 17a provided on the electric heating mat 11a and the small radish 17b provided on the electric heating mat 11b are in a substantially point-symmetrical positional relationship, and are arranged in parallel with each other at an appropriate interval and alternately at one end in the longitudinal direction. It is provided in a zigzag pattern with a gap as a passage for the heater wire 14 (FIGS. 1 and 2). The small joist 17 is temporarily fixed with a double-sided tape or the like (not shown). The small joists 17 are elongated or strip-shaped, and are disposed between the heat dispersion sheet 16 and the floor plate 18 provided on the surface of the electrothermal mat 11. As the material of the small joist 17, woody materials such as plywood, wood board, wood fiber board (MDF, etc.), wood chipboard, and single board laminate board can be used. Further, the small joists 17 are arranged so as not to overlap the heater wires 14 and the heat sensitive wires 15, and are fixed to the floor base plate 1 with wood screws (screws) 19 through the heat dispersion sheet 16 and the nonwoven fabric 13 (FIG. 3). At this time, since the nonwoven fabric 13 has elasticity, the nonwoven fabric 13 located under the small joist 17 is in a compressed state. Between the small joists 17, 17, the nonwoven fabric 13 is formed so as to be substantially in surface contact with the floor plate 18 via the heat dispersion sheet 16.

  The peripheral mat 12 is provided on the floor base plate 1 between the four peripheral edges of the electric heating mats 11a and 11b and the walls 2 and 2 of the room, and the electric heating mats 11a and 11b and the floor mat 18 are laid thereon. They are formed to have substantially the same thickness (3 mm in this embodiment). The peripheral mat 12 is formed of a flexible base material such as a nonwoven fabric.

  The floor board 18 is configured by attaching a decorative material to the surface of a base material. Plywood, wood board, wood fiber board (MDF, etc.), wood chipboard, single board laminated board, etc., wood, styrene resin board, vinyl chloride resin board, reinforced plastic board, polystyrene foam resin board, urethane foam resin It consists of a synthetic resin system such as a board, or a composite laminated board of a wood system and a synthetic resin system. As a decorative material to be stuck on such a substrate, a natural veneer obtained by cutting natural wood, an artificial veneer, a nonwoven fabric, paper, a synthetic resin sheet, or the like can be used, and a sheet of flexible material. You may use what printed various patterns on. As a synthetic resin sheet used as a decorative material, for example, an olefin resin, a vinyl chloride resin, a polyester resin, an acrylic resin, or the like can be used. The thickness of the decorative material is determined in the range of 0.05 to 1 mm, for example. Since the decorative material is extremely thin, the illustration is omitted and the thickness thereof is ignored, and the thickness of each floor board is assumed to be equal to the thickness of the plywood substrate. As an example, a decorative board obtained by sticking an optional decorative material as described above to the surface of a 9 mm thick plywood as a base material can be used as the floor board 18. The size of the floor board 18 is, for example, width 303 mm × length 1818 mm.

  The floor board 18 is laid in a direction orthogonal to the longitudinal direction of the small joists 17 so that the joint between the floor boards 18 is located on the small joists 17. Thereby, the deformation | transformation of the joint part of the floor board 18 not jumping up arises, and the floor surface without unevenness can be given. Further, the floor board 18 is formed with a male fruit 18a and a female fruit 18b along the longitudinal direction and the short side direction, and the nape 24 is driven into the base end portion of the male fruit 18a so as to be compressed under the small joist 17 and below. It is fixed to the floor base plate 1 through the nonwoven fabric 13.

  The controller 20 is connected to a wiring box 23 provided at one end of the joining edge of the electrothermal mats 11 a and 11 b via a cable 21 and is supplied with power via a power cord 22. The power cord 22 may be used while being connected to the controller 20, but the power cord 22 is detachably connected to the controller 20 and a plug (not shown) is provided at the tip thereof. A plug is inserted into an outlet (not shown) and temporarily used for an energization test of the electric heating mats 11a and 11b. When the energization test is completed, the power cord 22 is removed, and the controller 20 and the distribution board (see FIG. (Not shown) may be connected to the power supply. The controller 20 controls on / off of the electric heating mats 11a, 11b, strength of heating, prevention of overheating, prevention of electric leakage, and the like, and also performs other heating reservations as necessary.

  As described above, the thickness of the floor plate 18 is 9 mm, and the thickness of the electric heating mats 11a and 11b provided below the floor plate 18 (that is, the nonwoven fabric 13 and the heat dispersion sheet 16 overlap below the small joists 17 to overlap the nonwoven fabric 13). Is set so as to be 3 mm, the apparent thickness from the surface of the floor base plate 1 to the surface of the floor plate 18 is 12 mm. Further, in this embodiment, the peripheral mat 12 is disposed around the electric heating mats 11a and 11b on the floor base plate 1, and the thickness of the peripheral mat 12 is laid on the peripheral mat 12 with the thickness of the electric heating mat. Since the thickness is 3 mm, which is the same thickness as 11a and 11b, the total thickness of the peripheral mat 12 and the floor board 18 is also 12 mm, and the floor board 18 constructed on the electric heating mats 11a and 11b and the floor board 18 constructed on the peripheral mat 12 are. The surface of becomes the same.

  The construction method of the floor heating apparatus 10 demonstrated above is demonstrated with reference to FIGS. In order to install the floor heating device 10 in a room, first, the installation positions of the electric heating mats 11a and 11b on the floor base plate 1 in the room and the installation position of the controller 20 on the wall 2 are determined. When furniture or the like is placed near the window of the room, positioning is performed so that the electric heating mats 11a and 11b are not positioned under the furniture or the like.

  After the installation positions of the electric heating mats 11a and 11b and the controller 20 are determined, as shown in FIG. 6, a line 25 indicating the position of the center line of the electric heating mats 11a and 11b and the electric heating mats 11a and 11b are provided on the floor base plate 1. A line 26 indicating the position of the edge on the wiring box 23 side is marked. Further, a hole 27 for accommodating the wiring box 23 is formed in the floor base plate 1 at the intersection of the marking lines 25 and 26.

  Next, as shown in FIG. 7, the abutting edges (center line) of the electric heating mats 11a and 11b are aligned with the inking line 25, and the edges of the electric heating mats 11a and 11b on the wiring box 23 side are aligned with the inking line 26. Then, the electric heating mats 11 a and 11 b are arranged on the floor base plate 1. Further, the electrothermal mats 11a and 11b are fixed to the floor base plate 1 at the portions of the small joists 17a and 17b. In order to fix the electric heating mats 11a, 11b to the floor base plate 1, first, each small joist 17a1, 17b1 located on the center line side of the electric heating mats 11a, 11b is fixed with screws 19, 19,. Similarly, after fixing each small joist 17a5, 17b5 located on the outermost side of the mats 11a, 11b with screws 19, 19,..., The remaining small joists 17a2-17a4, 17b2-17b4 are similarly used in an arbitrary order. It is fixed with screws 19, 19. When fixing with the screws 19, 19..., The screws 19, 19... May be sequentially driven from one end on the wiring box 23 side to the other end of the small joists 17a1 to 17a5 and 17b1 to 17b5.

  After fixing the electric heating mats 11a and 11b in a predetermined position on the floor base plate 1, the cable 21 coming out from the wiring box 23 is placed on the surface of the floor base plate 1 as shown in FIG. Connect to.

  Next, the peripheral mat 12 is laid in a frame shape around the electrothermal mats 11a and 11b. The peripheral mat 12 is fixed on the floor base plate 1 by driving a screw (not shown) into an appropriate position or using an adhesive or the like. Although the peripheral mat 12 is also laid on the cable 21 on the floor base plate 1, the peripheral mat 12 is formed of a flexible base material such as a non-woven fabric as described above, and thus covers the cable 21. Maintains a flat surface without swelling at any point.

  After laying the electrothermal mats 11a and 11b and the peripheral mat 12 in this manner, an energization test of the electrothermal mats 11a and 11b is performed to confirm that the electric heater wire 14 operates normally.

  Next, inking for assigning the floor board 18 is performed. In the method of allocating the floor board 18, first, a reference line 28 to match the males 18 a along the longitudinal direction of the floor board 18 is drawn in a direction perpendicular to the longitudinal direction of the small joists 17. The reference line 28 is drawn from the ends of the electric heating mats 11a and 11b on the side of the wiring box 23 to a position where the predetermined distance D is smaller than the floor board width B1 = 303 mm, for example, D = 230 ± 35 mm.

  Further, a reference line 29 is drawn at a position separated from the reference line 28 by a distance corresponding to the floor board width B1 = 303 mm. The distance between the reference line 29 and the outer edge of the peripheral mat 12 corresponds to the width B2 of the floor board laid near the wall. The width B2 of the floorboard at the wall is adjusted to be a certain dimension, for example, 75 mm or more. The laying of the floor board 18 starts to be stretched with reference to the reference line 29, and the floor board is laid on the entire floor surface including the floor board at the window. When the floor board is stretched, the nail 24 and an adhesive may be used in combination. In addition, as mentioned above, the floor board 18 is allocated so that the joint line is located on the small joist 17.

  In the floor heating apparatus 10 according to this embodiment, since the peripheral mat 12 is laid around the electric heating mats 11a and 11b, the construction is easy. Further, even if the temperature of the peripheral mat 12 rises due to the heat generated by the electric heater wires 14 in the electric heating mats 11a and 11b, the peripheral mat 12 itself is thermally expanded because it is formed of a flexible base material. Even so, there is almost no deformation due to the pressure on the electric heating mats 11a, 11b arranged around them or the pushing up to the floor board 18. Furthermore, since the deformation of the electrothermal mats 11a and 11b is suppressed, the original heating function is not impaired, and the expected heat transfer efficiency to the floor board 18 is maintained.

  FIG. 9 shows a floor heating device 30 according to another embodiment of the present invention. The floor heating device 30 according to this embodiment is different from the floor heating device 10 according to the above-described embodiment in that the peripheral mat 31 provided in a frame shape around the electric heating mats 11a and 11b has a small joist 32. It is a point that has been. The components other than the peripheral mat have substantially the same configuration as that of the floor heating device 10, and the same reference numerals are given to these and description thereof is omitted.

  As shown in FIG. 9, the small joists 32 in the peripheral mat 31 may be provided at the same intervals as the small joists 17a and 17b in the electric heating mats 11a and 11b, or may be provided at different intervals. By providing the small joist 32 on the peripheral mat 31, the floor board 18 laid on the peripheral mat 31 can be assigned so that the joint between the floor boards is located on the small joist 32. And the peripheral mat 31 is kept flat by the thickness of the small joists 32, so that the flatness can be further maintained over the entire floor surface.

  The configuration of the peripheral mat 31 in this embodiment is substantially the same as the configuration of the electrothermal mats 11a and 11b described in detail with reference to FIG. 3 for the above-described embodiment, and on a flexible base material such as a nonwoven fabric. The small joists 32 are juxtaposed at an arbitrary interval and temporarily fixed with a double-sided tape or the like. The small joists 32 are fixed and laid on the floor base plate 1 over the base material by driving screws into the portions. However, since the electric heater wire 14, the heat sensitive wire 15, and the heat dispersion sheet 16 are not provided in the peripheral mat 31, it is not necessary to make a gap as a passage for the electric heater wire 14 and the heat sensitive wire 15, and therefore The small joist 32 can be extended from end to end, and the flatness can be further enhanced over the entire floor surface.

  FIG. 10 shows a floor heating device 40 according to still another embodiment of the present invention. The floor heating device 40 according to this embodiment is different from the floor heating device 10 according to the above-described embodiment in that a peripheral mat 12 provided in a frame shape around the electric heating mats 11a and 11b is continuous with the electric heating mats 11a and 11b. The integrated electrothermal mat 41 is laid over the entire floor surface. Thus, by using the integrated electrothermal mat 41, it is not necessary to lay a peripheral mat separately from the laying of the electrothermal mat, and the workability is improved. In addition, since the small joists 17a and 17b can be provided up to the wall after opening a gap to be a passage for the electric heater wire 14 and the heat sensitive wire 15, the floor board laid on the wall side is similar to the embodiment shown in FIG. It is possible to assign the joints so that the seams are located on the small joists, and the flatness can be further enhanced over the entire floor surface. About another point, it has the structure substantially the same as the floor heating apparatus 10, and attaches | subjects the same code | symbol to these and abbreviate | omits description.

It is a perspective view which shows one Embodiment of the floor heating apparatus by this invention in the state in the middle of construction of a floor board. It is a top view which omits a floor board and shows the construction state of this floor heating apparatus. It is BB expanded sectional drawing in FIG. FIG. 4 is an enlarged cross-sectional view of the heat dispersion sheet shown in FIG. 3. It is an AA expanded sectional view in FIG. It is a perspective view which shows one state of construction of the floor heating apparatus of this embodiment. It is a perspective view which shows the construction state following FIG. It is a perspective view which shows the construction state following FIG. It is a perspective view similar to FIG. 1 which shows another embodiment of the floor heating apparatus by this invention in the state in the middle of construction of a floor board. It is a perspective view similar to FIG. 1 which shows another embodiment of the floor heating apparatus by this invention in the state in the middle of construction of a floor board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor base plate 10 Floor heating apparatus 11 (11a, 11b) Electric heating mat 12 Perimeter mat 14 Electric heater wire 17 (17a, 17b) Electric heating mat small joist 18 Floor board 20 Controller 30 Floor heating apparatus 31 Perimeter mat 32 Small joisting of surrounding mat (Second small joist)
40 Floor heating device 41 Integrated electric heating mat

Claims (3)

An electric heating mat disposed on the floor base plate, a peripheral mat provided around the electric heating mat, a floor mat laid on the electric heating mat and the peripheral mat, and a controller for electrically controlling the electric heating mat The electric heating mat has an electric heater wire on the surface or inside thereof and has a small joist provided at a position not overlapping the electric heater wire, and the peripheral mat is formed of a flexible base material and a floor board A floor heating apparatus, wherein the floor heating apparatus is formed to have substantially the same thickness as the electric heating mat in a laid state. The floor heating apparatus according to claim 1, wherein the peripheral mat is configured to have a second small joist on the surface of a flexible base material. The floor heating apparatus according to claim 1 or 2, wherein the peripheral mat is formed integrally with the electric heating mat.

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