JP2005180831A - Floor heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and freely wire an electric floor heating device from a heater to a controller. <P>SOLUTION: The floor heating device includes electric heating mats 1a, 1b each of which has an electric heater wire 12 provided in a meandering pattern and an elongated or short joist 15 provided in a position not overlapping the electric heater wire; a peripheral panel 10 disposed around each electric heating mat and having approximately the same thickness as the joist; a heating floor panel 2 laid on top of each electric heating mat; a controller 3 for controlling the electric heating mats; and a cable 4 for electrically connecting the electric heating mats to the controller. The peripheral panel is formed with a cable storage groove 8 along the wiring path of the cable and a hole 19 facing downwards from the bottom of the cable storage groove is formed in the portion of the panel where the wiring direction of the cable changes. The cable housed in the cable storage groove is bent within the cable and changes its wiring direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electric floor heating apparatus.

  In an electric floor heating system, if the wiring cord from the heater part to the controller part is to be connected to the wall controller through the floor base plate and under the floor, the worker must enter the floor and perform wiring work. Therefore, complicated work was required. In addition, this method cannot be used when floor heating is installed at the time of renovation (floor plate replacement).

In order to solve these problems, it is necessary to wire a cord between the base plate and the floor plate. For example, as described in Patent Document 1 below, a technique is known in which a groove is formed on the back surface of a floor board and a cable is wired in the groove.
No. 6-2233

  According to the above prior art, the wiring work under the floor is not required, but a step of grooving the back surface of the floor board is required, and the strength of the floor board is lowered, causing warping and cracking.

  In general, it is rare that the cable can be wired in a straight line from the heater cord take-out position to the controller, and in many actual construction rooms, the cord is arranged according to the installation direction and installation position of the heater, the installation position of the controller, etc. Wiring must be done while being bent several times, but the work of processing the groove corresponding to such bending into the floor board on site must be very complicated.

  In addition, even if the wiring work was performed along the groove on the back side of the floor board, if the floor board was laid as it was, the cable would fall out of the groove due to its own weight, so it had to be temporarily fixed to prevent this .

  Therefore, the problem of the present invention is that in the electric floor heating apparatus, the wiring from the heater to the controller does not pass under the floor, and it is not necessary to process the wiring cord housing groove on the back surface of the floor plate. It is to provide a new configuration for easy implementation.

  Another object of the present invention is to provide a floor heating device that can be wired freely according to the installation direction and installation position of a heater, the installation position of a controller, and the like.

  In order to achieve the above object, a floor heating apparatus according to the present invention includes an electric heating mat in which an electric heater wire is provided in a meandering shape, and an elongated or strip-shaped small joist is provided at a position not overlapping the electric heater wire. The electrical panel is electrically connected to the peripheral panel of the same thickness as the small joist around the electric heating mat, the heating floor plate laid on the electric heating mat, the controller controlling the electric heating mat, and the electric heating mat. And a cable housing groove is formed in the peripheral panel along the cable wiring path, and a hole is formed further downward from the groove bottom of the cable housing groove at a portion where the cable wiring direction changes. The cable formed and accommodated in the cable accommodation groove is bent in the hole to change the wiring direction.

  In the electric heating mat, electric heater wires are arranged in a meandering manner on an elastic mat. 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, overheating of the electric heater wire can be prevented. The electric heater wires and the heat sensitive wires wired in a meandering manner in the mat enter and exit the wiring box provided in the electric heating mat. The electric heating mat is further provided with an elongated or strip-shaped thin plate (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. Prevents direct action on the heat rays to protect the electric heater wires and heat sensitive wires.

  Around the electric heating mat, a peripheral panel having the same thickness as Kokoneta is arranged. A heating floor is laid on the electric heating mat. The heating floor board is laid on at least the electric heating mat, and the heating floor board may be laid over the peripheral panel or on the peripheral panel.

  The wiring box also serves as a switching means for electrically connecting the electric heater wire and the heat sensitive wire on the electric heating mat side to a cable formed of a normal electric wiring material.

  One or more connectors are provided in the middle of the cable connecting the wiring box and the controller.

  The controller performs control such as turning on / off the electric heating mat, strength of heating, selection of a heating location, and prevention of overheating of the electric heater wire. In addition, a power cord for supplying power is drawn from the controller, but a screwless terminal may be provided on the controller side for connecting the power cord. This makes it easier for an electrician to remove the power cord after the carpenter performs an energization test on the electrothermal mat, and the work efficiency is improved. A plug is provided at the tip of the power cord.

  The cable that electrically connects the electrothermal mat and the controller is preferably a wide flat type cable in which a plurality of cords are combined into one. The cable is accommodated in a cable accommodation groove formed by cutting out a part of the peripheral panel along the wiring path of the cable. Depending on the location of the storage furniture, opening, etc. in the room where the floor heating system is installed, and other factors, it may not be possible to route the cable straight from the electric heating mat wiring box to the controller. Grooves are formed in a zigzag shape. The cable housing groove is formed by engraving work on site according to the situation of the construction site after the peripheral panel is constructed around the electric heating mat. It may be produced in the factory and then installed. Further, the cable housing groove may be formed so as to penetrate the front and back of the peripheral panel, or may be formed by cutting out from the surface of the peripheral panel to the middle of its thickness. It is necessary to have a groove depth of

  In the cable housing groove, a hole is formed in a portion where the wiring direction of the cable changes from the bottom of the groove further downward. The shape of the hole is arbitrary and can be circular or rectangular in plan view. The cable housed in the cable housing groove is bent in the hole along the shape of the cable housing groove to change the wiring direction.

  In addition, if burrs or the like remain at the corners when processing holes, there is a risk of disconnection due to the load applied from the surface side when the floorboard is placed and fixed. It is preferable that chamfering is performed. Alternatively, a cylindrical body or a box-like body processed into an arc shape or a taper shape that gradually narrows as the inner side surface of the upper end opening portion goes downward is fitted into the hole, and the cable is bent therein. Thus, the risk of cable disconnection may be avoided while omitting chamfering of the hole. When a plurality of claws are provided along the entire circumference or at intervals so as to extend outward from the upper end opening edge of the cylindrical body or the box-shaped body, and this claw is locked to the opening edge of the hole, The cylindrical body or the box-shaped body can be fixed in a stable state while preventing the tubular body or the box-shaped body from being excessively fitted into the hole.

  According to the floor heating device of the present invention, the cable for electrically connecting the electric heating mat and the controller is wired while being accommodated in the cable accommodation groove formed in the peripheral panel. Wiring work can be easily performed from above. Even when the floor heating device is installed at the time of renovation, the wiring work can be smoothly performed in a short time.

  Further, even when the cable has to be routed along the bent wiring path, the cable is accommodated in the cable accommodation groove formed in the peripheral panel along the wiring path, and the cable wiring direction is Since the direction of wiring can be changed by bending the cable in the hole formed downward from the bottom of the cable housing groove at the changing part, the wiring work is easy, and the cable is also on the surface at the bent part. Since it does not protrude to the side, the floor board can be smoothly constructed without causing unevenness in the floor board, and the problem of cable disconnection does not occur.

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

  1 to 4 and 9 to 10, this floor heating apparatus includes a pair of electric heating mats 1 a and 1 b provided with electric heater wires 12 in a meandering manner. A mat 1, a heating floor plate 2 laid on the electric heating mat 1, a controller 3 for controlling the electric heating mat 1, and cables 4 and 5 for electrically connecting the electric heating mat 1 and the controller 3 are provided. ing. A power cord (not shown) is pulled out from the controller 3, and a power source can be obtained by connecting a plug (not shown) provided at the tip of the power cord to an outlet (not shown). ing. The power cord is preferably detachably connected to a screwless terminal (not shown) provided in the controller 3.

  The electric heating mat 1 (1a, 1b) has a non-woven fabric 11 having elasticity as a base material, and an electric heater wire 12 and a heat sensitive wire 13 are stuck on the non-woven fabric 11, and a laminate 14 is laminated thereon in contact therewith. (FIG. 10). An example of the laminated body 14 has a three-layer structure in which laminated aluminum is laminated and laminated with an aluminum foil having thermal conductivity and flexibility between front and back sheets formed of a nonwoven fabric or the like. The laminated body 14 is provided on the entire surface of the nonwoven fabric 11 via the heater wire 12 and the heat sensitive wire 13, and is used to disperse the heat generated by the heater wire 12 in a plane and efficiently transmit it to the floor plate 2 for heating. .

  A plurality of small joists 15 that are vertically long thin plates are bonded in parallel to the electric heating mat 1 (1a, 1b). The small joists 15 are elongated or strip-shaped, and are disposed between the laminate 14 provided on the surface of the electric heating mat 1 and the floor plate 2 for heating. As the material of the small joist 15, 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 15 are arranged so as not to overlap with the heater wires 12 and the heat sensitive wires 13, and are fixed to the base material 17 with wood screws (screws) 16 through the laminate 14 and the nonwoven fabric 11 (FIG. 10). In this case, since the nonwoven fabric 11 has elasticity, the nonwoven fabric 11 located under the small joist 15 is in a compressed state. The small joists 15 have a point-symmetrical positional relationship with respect to the center of the electric heating mat 1 and are arranged in a staggered manner with reference to the edge of the electric heating mat 1 (FIGS. 1 to 3 and FIG. 9). The material of the base material 17 uses a wood system such as plywood, wood board, wood fiber board (MDF, etc.), and its thickness is, for example, 15 mm. The base material 17 is laid on the joists 26, and a heat insulating material 27 is filled between the joists 26.

  The heater wire 12 of the electric heating mat 1 is attached in a meandering manner between the small joists 15 and 15 (FIG. 9). The heat sensitive wire 13 (not shown in FIG. 9) is provided in the vicinity of the small joist 15 and along the heater wire 12, but is arranged so as not to overlap the heater wire 12 (FIG. 10). The heat sensitive wire 13 functions to sense and prevent abnormal overheating caused by the heater wire 12.

  The floor plate 2 for heating is configured by sticking a decorative material on the surface of a base material, and a male fruit 20a and a female fruit 20b (FIGS. 4 and 10) are formed along the longitudinal direction thereof. 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 heating floor board 2. A peripheral panel 10 made of plywood having the same thickness as the thickness of the electric heating mat 1 (3 mm in this embodiment) is applied in a frame shape on the base material 17 in a portion where the electric heating mat 1 is not applied.

  As described above, the thickness of the heating floor board 2 is 9 mm, but the total thickness of the small joist 15 and the electric heating mat 1 provided below (more strictly speaking, the nonwoven fabric 11 and the laminate below the small joist 15. 14 is overlapped and the total thickness when the nonwoven fabrics are arranged in a compressed state) is set to 3 mm. Therefore, the apparent thickness from the surface of the base material 17 to the surface of the floor board 2 for heating is set. Is 12 mm. Further, in this embodiment, a peripheral panel 10 (shaded portion in FIG. 2) made of plywood or the like in a frame shape is disposed on the base material 17 so as to surround the electrothermal mat 1, and the thickness of the peripheral panel 10 is Is 3 mm, the total thickness of the peripheral panel 10 and the floor plate 2 for heating is 12 mm, and the surface of the floor plate 2 constructed on the electric heating mat 1 and the floor plate 2 constructed on the peripheral panel 10 is flush with each other. Become. By providing the peripheral panel 10 in close contact with the four peripheral edges of the heating floor plate 2, the load resistance and caster resistance of the floor plate are improved.

  The pair of left and right electric heating mats 1 a and 1 b constituting the electric heating mat 1 is provided with one common wiring box 9, and a cable 4 having a connector 6 at the tip is drawn from the wiring box 9. The cable 4 requires a plurality of cords such as a heater wire, a temperature sensing wire, and a signal wire. In order to perform the connection work reliably and easily, a connection method using a connector 6 is adopted. A plurality of (four in the illustrated embodiment) cords have a wide and flat shape (FIGS. 5, 7, and 12).

  When wiring the cable 4, the wiring path is determined according to the positions of the wiring box 9 and the controller 3, and the cable is stored in the cable storing groove 8 formed by cutting the peripheral panel 10 along the wiring path. When the cable 4 cannot be linearly routed from the wiring box 9 to the vicinity of the controller 3 due to the arrangement and other conditions of the storage furniture and openings of the room where the floor heating device is installed, FIG. As shown, the cable housing groove 8 is formed so as to form a bent cable wiring path. Or you may form a cable accommodation groove | channel so that it may become a skewed cable wiring path | route from the wiring box 9 to the cable outlet 25. FIG.

  The cable housing groove 8 is formed so as to penetrate the peripheral panel 10 on the front and back sides. As described above, the peripheral panel 10 has the same thickness as the small joist 15 and is 3 mm thick in this embodiment, so that it can be easily cut by a cutter or the like. Since the cable 4 has a wide and flat shape, if the cable housing groove 8 is formed to be sufficiently wider than the width, it can be completely accommodated in the cable housing groove 8 having a thickness of 3 mm (FIG. 11). .

  The bent portion of the cable housing groove 8 is provided with a hole 19 formed by cutting out the lower base plate 17 from the groove bottom, and the cable 4 is bent at a right angle in the hole 19 (FIG. 5). . When the wide flat cable 4 is bent on the flat surface, twisting occurs with the bent inner peripheral side protruding upward or downward, and the protruding length is about 0.7 times the width dimension, and the wide cable 4 is used. In this case, the protrusion length is extremely large. Even when the cable 4 is bent at a right angle while being folded (FIG. 12), the folded portion has a thickness at least twice that of the cable 4. Since the base plate 17 is present below the cable housing groove 8, when the hole 19 is not present, the bent inner peripheral side of the cable 4 has no choice but to project upward and twist, and is applied on the peripheral panel 10. A large unevenness will occur in the floor plate 2. Even when the cable 4 is folded and bent, the depth of the cable housing groove 8 is the same thickness (3 mm) as the small joist 15 and has only a dimension to accommodate the thickness of the cable 4. Unevenness occurs at the folded portion having the above thickness. In any case, if the bent portion of the cable 4 protrudes upward, a load is applied every time the floor 4 of this portion is walked, and the cable 4 may be disconnected.

However, since the hole 19 is provided in a portion where the cable 4 is to be bent (the bent portion of the cable housing groove 8), the cable 4 is bent so that the inner circumferential side of the cable 4 protrudes downward into the hole 19. Therefore, the cable 4 does not protrude upward in the bent portion, the unevenness of the floor board 2 can be prevented, and the risk of cable disconnection due to walking is also avoided.
The shape of the hole 19 is arbitrary, and may be a circular shape, an elliptical shape, an oval shape or the like in plan view in addition to the illustrated rectangular shape.

  When the base plate 17 is notched in forming the hole 19, if a burr remains at the opening edge of the base plate 17, the cable 4 may hit the burr and break due to a load applied from the surface side when the flooring 2 is placed and fixed. Therefore, it is preferable to provide means for preventing this. One means is to chamfer the corners 19a, 19b (FIG. 11) against which the cable 4 hits (not shown), but another preferred approach is gradually as the inner side of the upper end opening goes downward. A cylindrical body or a box-shaped body processed into an arc shape or a taper shape that narrows in a hole is fitted into the hole, and the cable 4 is bent therein, whereby the opening edge of the hole 19 is chamfered. Is to avoid the risk of cable disconnection.

  An example of such a box-like body is shown in FIG. The box-like body 21 has a box shape with an upper end opened corresponding to the shape and size of the hole 19, and arc-shaped chamfered portions 22 a and 22 b are formed at the four peripheral edges of the opening. . In this embodiment, arc-shaped chamfered portions 22a and 22b are formed at the four peripheral edges of the opening, but at least two chamfered portions 22a and 22b are provided at two opening edges through which the cable 4 passes while being bent. Just do it.

  This box-like body 21 is fitted from above into a hole 19 formed in the bent portion of the cable housing groove 8, and the claws 23, 23... In this way, it is placed (FIG. 7). The thickness of the claw 23 is set to be equal to or less than the thickness of the peripheral panel 10 and the small joist 15 in order to prevent unevenness in the floor board 2.

  FIG. 8 shows another embodiment used for the same purpose. The cylindrical body 28 has a substantially truncated cone shape or a substantially bucket shape in which the opening diameter gradually decreases from the upper side to the lower side as a whole, and the hole 19 is formed as a circular shape in plan view (FIG. (Not shown). .. Are provided at predetermined angular intervals on the upper edge of the opening. Like the above, these claws 24 are supported by being hooked on the edge of the hole 19. The tubular body 28 is fitted and placed in the hole 19.

  The cable 4 wired in the cable housing groove 8 bent from the wiring box 9 as described above is guided from the outlet 25 into the wall. The wall 30 in this embodiment is shown as having a configuration in which a wall material 32 is constructed on a wall base such as a stud 31 and a base board 33 is fixed to a lower end of the wall material 33 with a nail 34.

  The extension cable 4 is appropriately fixed to the wall base 31 with a fixing bracket (not shown) and pulled up to an arbitrary height position, and then electrically connected to the controller-side cable 5 via the connector 6. When the extension cable 4 is wired in the wall, the extension cable 4 is routed so as to pass through a position away from the wall surface so as not to be damaged by the nail when the skirting board 33 is hit with the nail 34.

  Construction of the floor heating apparatus configured as described above can be performed in the following order.

(1) First, the base material 17 is pasted on the place where the heating floor is to be constructed.

(2) The position of the electrothermal mat 1 (1a, 1b) to be constructed on the base material 17 is determined in consideration of the size of the room and the required heating location, and the hole 7 for attaching the wiring box 9 according to this (Fig. 11) is opened in the base material 17, and the electrothermal mat 1 is arranged at a predetermined position. Since the small joist 15 is attached to the electric heating mat 1 in advance, the electric heating mat 1 can be fixed at a predetermined position by driving a screw 16 into the base material 17 from the small joist 15 (FIG. 10).

(3) The peripheral panels 10, 10... Are applied on the base material 17 around the electric heating mat 1. The construction of the peripheral panel 10 can be performed using an adhesive, double-sided tape, nailing, or any other fixing means.

(4) The wiring box 9 is attached in the hole 8 of the base material 17.

(5) The wiring path of the cable 4 drawn from the wiring box 9 is determined, and based on this, the peripheral panel 10 is cut out with a cutter or the like to form the cable housing groove 8 extending from the wiring box 9 to the outlet 25.

(6) The base material 17 is notched with a cutter or the like in the bent portion of the cable receiving groove 8 to form a hole 19 for receiving the protruding portion accompanying the bending of the cable 4. If necessary, the opening edge of the hole 19 is chamfered, or a member such as the box-shaped body 21 in FIG. 6 or the cylindrical body 28 in FIG.

(7) The cable 4 is accommodated in the cable accommodating groove 8, and the bent projecting portion is projected downward to be accommodated in the hole 19 or the members 21 and 28 fitted in the hole, and wired. After being led out from the outlet 25, it is led to the wall 30 and fixed in the wall by a fixing bracket (not shown).

(8) The extension cable 4 wired in the wall is connected to the connector 6 at the tip of the controller-side cable 5 drawn from the controller 3 attached to the wall.

(9) An energization test of the electric heating mat 1 is performed through the operation of the controller 3, and it is confirmed that the electric heating mat 1 operates normally.

(10) The floor board 2 is constructed sequentially from the wall side. The construction of the peripheral floor board can be performed using an adhesive, a double-sided tape, nailing at the male 22a portion, or any other fixing means. For floorboards (peripheral floorboards) to be installed in the corners of the room, determine the number of sheets to be used, cut out either male or female seeds, adjust the width, and cut off the male side First, the cut end face of the floor plate (the peripheral floor plate 18a shown in the leftmost column of FIG. 1) is applied to the wall base 31, and then a predetermined number of sheets are sequentially applied by actual fitting.

(11) The floor board 2 is constructed by fitting the female fruit of the peripheral floor board 18a to the male fruit 20a of the floor board 2 (FIGS. 1 and 11), and the floor boards 2 are fitted to each other with the male fruit 20a and the female fruit 20b. Through the joint, the floor boards 2 having a predetermined number of rows (6 rows in the illustrated embodiment in total) are sequentially subjected to horizontal joining (FIG. 4). Construction of the floor board 2 is preferably performed by driving a nail 36 (FIG. 10) into the male fruit 20a at a position where the small joist 15 exists and fixing it to the small joist 15 and the base material 17. At this time, an adhesive may be applied on the small joists 15 and the heating floor board 2 may be fixed by using a combination of a nail and an adhesive.

(12) After adjusting the number of peripheral floor boards 18b used and the width for the outermost side (see the peripheral floor board 18b shown at the lower end of FIG. 3 and the right end of FIG. 11), The male floor of the floor board 18b is fitted, and the peripheral floor board 18b is sequentially constructed by actual fitting, and finally the outer peripheral floor board 18b (the peripheral floor board 18b shown at the right end in FIG. 11 is cut off). ) Is applied so that the cut end surface of () is brought into contact with the wall base 31. The construction of the peripheral floor board 18b can be performed in the same manner as described above for the construction of the peripheral floor board 18a.

(13) Finally, the wall material 32 and the skirting board 33 are constructed, and the construction of the floor heating device is completed.

  As mentioned above, this floor heating device can perform the construction from the laying of the electric heating mat to the floor finish only by carpentry work, and eliminates the complexity and interference with the electric work like the conventional technology. The construction can be completed efficiently in a short period of time.

  When installing the controller 3 on the wall after completing the installation of the floor heating system, unplug the power cord from the screwless terminal of the controller 3, and instead connect the power wiring that has been wired in the wall in advance. After performing the above, the controller 3 is fixed to the wall.

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 shows the construction state of this floor heating apparatus. It is a top view of the state which removed the floor board from FIG. FIG. 5 is an enlarged cross-sectional view taken along line FF in FIG. 2. It is explanatory drawing which shows the state in which the cable bending part protrudes and is accommodated in the hole formed in the bending part of a cable accommodation groove | channel. It is a perspective view which shows the box-shaped body fitted to the hole formed in the bending part of a cable accommodation groove | channel. It is a perspective view which shows the relationship between the box-shaped body of FIG. 6 fitted to the hole, and a cable bending part. It is a perspective view which shows the cylindrical body fitted to the hole formed in the bending part of a cable accommodation groove | channel. FIG. 3 is a detailed view of an electrothermal mat portion in FIG. 2. It is DD expanded sectional drawing in FIG. It is a cutaway view along the cable wiring path. It is a top view which shows the state which bent the wide flat cable at right angle.

Explanation of symbols

1 (1a, 1b) Electric heating mat 2 Heating floor board 3 Controller 4 Cable 8 Cable housing groove 9 Wiring box 10 Peripheral panel 12 Electric heater wire 15 Radish 17 Base material 19 Hole 21 Box-shaped body 28 Cylindrical body

Claims (1)

An electric heating mat in which the electric heater wire is provided in a meandering manner, and an elongated or strip-shaped small joist is provided at a position that does not overlap with the electric heater wire, and is approximately the same thickness as the small joist arranged around the electric heating mat. In a floor heating apparatus having a peripheral panel, a heating floor laid on an electric heating mat, a controller that controls the electric heating mat, and a cable that electrically connects the electric heating mat and the controller, A cable housing groove is recessed along the peripheral panel, and a hole is formed further downward from the groove bottom of the cable housing groove at a portion where the cable wiring direction changes, and the cable is housed in the cable housing groove. Is a floor heating device, wherein the wiring direction is changed by being bent in the hole.

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