JP3089415B1 - Sheet-shaped surface heating element and surface heating device - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To improve the difficulty of nailing and fixing a sheet-like sheet heating element for floor heating and to fix a sheet-like sheet heating element and a sheet heating element that can be nailed to a joist of a floor base without reducing a heating surface. Provide equipment. SOLUTION: Conductive trunk lines 2, 3 and conductive branch lines 4, 5 are provided on the inner surface of a front-side insulating film 1, and a heat generating surface 6 is provided on the lower surface of a printed region portion of the conductive branch lines, Is connected to one terminal 9A of the power supply unit 9 and between the heat generating surface portion at the center position and the conductive trunk line 3 on the power supply unit side from the other conductive trunk line 3 located on the opposite side to the power supply unit 9. A longitudinal conductive trunk 8 extending toward the trunk line 2 is provided, and the other terminal 9B of the power supply unit 9 is connected to a tip end of the longitudinal conductive trunk 8 so that the heating surface and the lower surface of the printing area of the current circuit are provided. Protective film 11
The front-side insulating film and the back-side insulating film were bonded at the peripheral edge thereof, and a nailable area 12 free of a heat-generating substance or a conductive substance was formed on both sides of the heat-generating surface 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-shaped surface heating element and a sheet heating device, and more particularly, to a sheet-shaped surface heating element which is rich in flexibility and has a nailable area on both sides of a heating surface, and this sheet-shaped surface. The present invention relates to a sheet-shaped surface heating element and a surface heating device suitable for floor heating, in which the heating element is lined with a heat insulating sheet that can be nailed.

[0002]

2. Description of the Related Art In recent years, as houses have become Westernized, flooring, that is, rooms having a floor plate structure, have become preferred, and floor heating devices have begun to spread accordingly. An electric heating plate formed by sandwiching a thin plate-like surface heating element between a protective plate, a holding plate, and a heat insulating material is applied to this floor heating device, for example, as disclosed in JP-A-8-303802, By arranging this heating plate on the back of a floor plate or a tatami surface, the floor surface or the tatami surface can be warmed.

[0003]

However, as described above, the conventional surface heating element for floor heating has a considerable thickness so that the construction is complicated and the flexibility is poor. The construction accuracy is required, and furthermore, the waterproof measures are complicated, resulting in an increase in cost, and further, it is difficult to fix the surface heating element. Further, since the surface heating element is fixed to the joists constituting the floor base, nailing work cannot be performed, so that the fixing operation of the surface heating element on the floor base was extremely complicated.

[0004] The present invention provides a sheet having a high flexibility, an apparent thickness of 1 mm or less, a sheet having excellent waterproofness, and excellent workability in which a nailing fixing operation can be performed safely and reliably. An object of the present invention is to provide a surface heating element and a sheet heating device in which a heat insulating material sheet is lined with the sheet heating element.

[0005]

The basic structure of the sheet-like surface heating element of the present invention is that a plurality of sheet-like heating elements extending parallel to each other in the width direction of both ends of the inner surface on the short side of the front-side insulating film . electrically <br/> conductive trunk and a conductive branch line extending alternately from a plurality of conductive main line to conductive trunk close to opposite each of its both end portions are printed with a conductive material, next to the plurality of
The contacting conductive trunk is made by an electric wire inserted through a metal pipe.
And connect the conductive trunks between the opposing conductive trunks at both ends.
Electric heating material is printed on the printed area of the conductive branch line.
A plurality of rows of heat generating surfaces are formed, and between the heat generating surface portions at the center position, the conductive trunks on the power supply unit side and the conductive trunks from the conductive trunk on the opposite side to the power supply unit toward the conductive trunk on the power supply unit side. A conductive trunk line on the opposite side to the power supply unit without contacting the conductive branch line extending from the trunk line, and a tape-shaped vertical conductive trunk line connected to one conductive branch line extending from the conductive line trunk line are provided. One current terminal extending from the power supply unit is connected to the conductive trunk on the power supply unit side, and the other current terminal is connected to the vertical conductive trunk, respectively, so that a current circuit is formed on each heating surface. A protective film is disposed on the lower surface of the printing area portion, and an insulating film on the rear surface is further disposed on the lower surface, and the insulating film on the front surface and the insulating film on the rear surface are adhered at least at the peripheral portion thereof, and heat is generated. Exothermic in the vertical direction on both sides of the surface It is intended that wherein the nailing can range quality and the conductive material is not present is provided.

Further, the configuration of the surface heating device according to the present invention includes a plurality of conductive trunk lines extending in parallel in opposite width directions at both ends of the inner surface on the short side of the front-side insulating film, and the both ends of the conductive trunks. Conductive branch lines extending alternately from each of the plurality of conductive trunks to the vicinity of each of the opposing conductive trunks are printed with a conductive material, and the plurality of adjacent conductive trunks are inserted through a metal pipe. A plurality of rows of heating surfaces are formed by printing a conductive heating substance on a printed area portion of a conductive branch line between the opposite conductive trunk lines at both ends, which are connected by an electric wire, thereby forming a plurality of rows of heating surfaces. Between the conductive trunk on the side opposite to the power supply unit and the conductive trunk on the power supply unit side, without contacting the conductive trunk on the power supply unit side and the conductive branch line extending from the conductive trunk. Opposite conductive trunk and its conductive trunk A tape-shaped vertical conductive trunk connected to one conductive branch extending from the wire is provided, and one current terminal extending from the power supply unit is connected to the one conductive trunk and the other current terminal is connected to the vertical. A current circuit is formed on each heating surface connected to the conductive trunk, and a protective film is disposed on the lower surface of the heating region and the printed area of the current circuit, and further on the lower surface, an insulating film on the back surface is disposed. A sheet-like surface in which a front-side insulating film and a back-side insulating film are adhered at least at the peripheral edge thereof, and a nailable area free of a heat-generating substance and a conductive substance is provided in a longitudinal direction on both sides of each heat-generating face. A heating element is formed, and a heat insulating material sheet is attached to the back surface of the sheet-shaped surface heating element.

The insulating film on the front side and the insulating film on the back side of the sheet-like surface heating element of the present invention are not particularly limited as long as they have durability and waterproofness in addition to electric insulation. Instead, polyethylene, polyester, polypropylene, or a composite film thereof can be used, and the thickness is desirably about 250 to 500 μm. Further, as the protective film disposed on the inner surface side of the back side insulating film, a film having a thickness of about 30 to 50 μ selected from polyethylene, polyester, polypropylene or the like is sufficient.

[0008] For printing of the conductive trunks and the conductive branch lines opposite to each other that form the electrodes of the heat generating portion, a conductive fine powder, for example, a silver fine powder or a mixed fine powder of silver and aluminum is mixed with a printing ink. It is preferable to use a conductive paste formed as described above. Examples of the heat-generating substance for forming a heat-generating surface by printing on the printed area of the conductive branch line include, for example, fine particles of polyethylene glycol which are baked at a high temperature to transform into semiconductors, and phenol resin or carbon black. It is preferable to use a paste obtained by adding the conductive fine particles and a printing ink and kneading them.

The width dimension of the conductive trunk printed on both ends of the inner surface on the short side of the front-side insulating film is about 10 to 30 m.
It is preferable that the length of the branch line branching at a right angle from the main line is about 1 to 3 mm, which is smaller than the width of the main line. Conductive trunks are formed in parallel so as to face each other at both ends of the inner surface on the short side, and alternate between the facing conductive trunks from one conductive trunk to the other conductive trunk. The conductive branch line is printed so as to extend in parallel with the current, and a current circuit is formed. At the same time, a heat-generating substance is printed on the printed area of the conductive branch line. A heat generating surface can be obtained by configuring the material to generate heat.

[0010] The vertical conductive trunk for supplying electricity to the conductive trunk on the side opposite to the power supply section is provided with a metal foil tape having good conductivity in order to improve conductivity efficiency, for example, a width of 5 to 10 m.
An electrically conductive copper foil tape or aluminum foil tape having a thickness of 20 to 40 μm is suitable.

[0011] Furthermore, as a backing heat insulating sheet for forming a surface heating device by backing the sheet-like surface heating element, the outer diameter of the metal pipe between adjacent conductive trunks is equal to or smaller than the outer diameter of the metal pipe. Also, a synthetic resin foam sheet having a thickness slightly larger than that and easily penetrating a nail is preferable.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an embodiment of a sheet-like surface heating element according to the present invention; FIG.
FIG. 2 is a partially omitted cross-sectional enlarged view in the width direction of FIG.
Is an insulating film on the surface side, 2, 3 is a conductive trunk, 4,
Reference numeral 5 denotes a conductive branch line, 6 denotes a heating surface, 7 denotes an insulating film on the back side, 8 denotes a vertical conductive trunk line, 9 denotes a power supply unit, and 10 denotes a sheet-like surface heating element.

The front side insulating film 1 and the back side insulating film 7 in the embodiment of the present invention have a thickness of 2
A 50μ polyethylene film is used. Opposite conductive trunks 2 and 3 are printed in the width direction at both ends of the inner surface on the short side of the front-side insulating film 1 using a mixed paste of fine silver powder and printing ink. A plurality of parallel conductive branches 4 and conductive branches extending alternately from the conductive trunks 2, 3 to the opposing conductive trunks 2 or 3, respectively, to the vicinity of the conductive trunks 2 and 3. The line 5 is printed using a mixed paste of fine silver powder and a printing ink similar to the conductive trunk. And the conductive branch line 4 between the conductive trunks 2 and 3,
In the present embodiment, a paste which is formed by baking high-temperature substances, polyethylene glycol fine particles at a high temperature and transforming them into semiconductors, adding carbon black fine particles and printing ink thereto and kneading the conductive branches is used as the conductive branch. The heating surface 6 is formed by printing over the lines 4 and 5.
Are formed.

FIG. 1 and FIG. 2 show the present invention.
Thus, both ends of the inner surface on the short side of the front side insulating film 1
Opposing conductive trunks 2, 2, 3 and 3 are spaced apart in the width direction, and between each of the opposing conductive trunks 2, 3, The conductive branch lines 4, 5 extending alternately toward the opposing conductive trunks 3, 3 and 2, 2 to the vicinity of the opposing conductive trunks, and materials that generate heat when energized, are printed in three rows. a rectangular heating surface 6,6 are formed, adjacent double
Several conductive trunks 2, 2, 3 and 3 have an outer diameter of about 5 mm
Are connected by an electric wire 14 inserted into a metal pipe 13 of the first embodiment, and conductive between the conductive trunk line 3 and the conductive trunk line 2 between the central heating surfaces 6 in the same manner as in the sheet-like surface heating element of the above embodiment. The tape-shaped member connected to the conductive trunk 3 and one central conductive branch 5 extending from the conductive trunk 3 without contacting the trunk 2 and the conductive branch 4 extending from the conductive trunk 2. A vertical conductive trunk 8 is provided, and one current terminal 9A extending from the power supply unit 9 is connected to the conductive trunk 2 on the power supply unit side.
The other current terminal 9B is connected to the vertical conductive trunk 8 to form a current circuit on each of the heat generating surfaces 6, 6, and a protective film 11 is further provided on the lower surface of the heat generating surface and the printed area of the current circuit. Each of the heat generating surfaces is provided by disposing an insulating film 7 on the back surface on the lower surface thereof and bonding the insulating film 1 on the front surface and the insulating film 7 on the back surface at least at the peripheral portion thereof. Nailable area 1 in which exothermic substance and conductive substance do not exist in both longitudinal directions of 6, 6
This is a sheet-like surface heating element 10 provided with 2, 12.

In the above-described embodiment, since the metal pipe 13 exists between the conductive trunks 2 and 2 and 3 and 3 adjacent to each other at both ends, the portion of the metal pipe 13 is locally thick. As shown in FIG. 4 , a heat insulating material sheet 15 is preferably attached to the sheet-shaped surface heating element 10 as shown in FIG. That is, as shown in FIGS. 5 and 6, when bonding a heat insulating material sheet 15 to be backed, for example, a synthetic resin foam sheet having a thickness of about 5 mm, the metal pipe 13 of the synthetic resin foam sheet is used. A hole 16 is provided at a position where the metal pipe 13 is in contact with the metal pipe 13, and more preferably a hole 17 for accommodating the power supply unit 9 is also provided so that the power supply unit 9 can be accommodated. The heat generating device 20 can be obtained, and the workability of laying on the floor base is improved.

In the embodiment in which the heat insulating material sheet 15 is attached to the back surface of the sheet-shaped surface heating element 10 having the plurality of rows of heating surfaces 6 and 6 as described above, the surface heating device 20 for floor heating is used. , The width of the nailable area 12, 12 is about 30
mm, interval is 30.3c according to the interval of joist of floor base
It is desirable that the sheet-shaped surface heating element 10 be set to m (one scale). That is, many of the floor foundation 12 and 13
As shown in the figure, a joist 31 is disposed and fixed at a distance of about one foot in a direction perpendicular to the hoist 30 on the hoist 30, and a heat insulating material 32 is interposed between the joists 31 or Or joist 3
A water-resistant plywood 33 is stretched over the first ply. And since the surface heating device 20 to be placed thereon, the distance between the nailing possible range 12, 12 may be set to match the spacing of the joists 31 of the bed foundation, as shown in FIG. 7 ,
If the rows of the nailable areas 12, 12 are arranged on the joists 31, the tips of the nails driven into the nailable areas 12, 12 from the floorboard (flooring material) 34 reach the joists 31. The heating device 20 can be accurately fixed to the floor base.

When a synthetic resin foam sheet is used as the heat insulating material sheet 15, as shown in FIG. 8 , the synthetic resin foam sheet is divided so as to be connectable into a plurality of sheets, and the pieces 15 a, 15 b, and 15 c are separated. Alternatively, a gap 21 may be provided in the length direction, and a gap 22 may be provided in the width direction to be connected to each other and bonded with an adhesive. According to such an embodiment, even if each piece 15a, 15b, 15c of the synthetic resin foam sheet expands due to the heat generation temperature of the heat generation surface 6, each piece 15a is formed by a slight gap at the joint boundary of each piece.
The effect is obtained that the vertical and horizontal dimensional changes of a, 15b and 15c are absorbed.

Further, as shown in FIGS. 8 and 9 , as a method of attaching the heat insulating material sheet 15 to the sheet-like surface heating element 10, elongated woods 18, 18 are provided on the back side of the nailable area line. It is also a preferred embodiment to configure the surface heating device 20 to dispose and attach a synthetic resin foam sheet between the woods 18. Thus if by disposing timber 18 on the back surface of the nailing possible area 12, as shown in FIG. 10, since the nailing possible range 12 and timber 18 can be placed on the joists 31, The nailing portion does not sink down like a synthetic resin foam sheet due to nailing, and the surface heating device 20 can be securely fixed to the joist 31.

[0019]

As described above, the sheet heating element 1 of the present invention is described.
Reference numeral 0 denotes a plurality of opposed conductive trunks 2 and 3 which are printed with a conductive material in the width direction at both ends on the short side of the front side insulating film 1 and extend in parallel with each other. br /> extending a plurality of alternately from between each conductive trunk 2 and 3 to opposing conductive trunk 3 and 2 close to toward the conductive trunk 3 and 2 opposing each of the ends conductive branch line 4 And 5 are printed, and a heat generating surface 6 is printed on the printing area portion of the conductive branch lines 4 and 5, and furthermore, between the heat generating surfaces 6 at the center position, the conductive trunk line 3 on the opposite side of the power feeding unit is connected to the power feeding unit. Towards the conductive trunk 2 on the side, the conductive trunk 2 and the conductive trunk 3 on the opposite side of the power supply unit are not in contact with one conductive trunk 2 and the conductive branch 4 extending from the conductive trunk 2. Tape-like vertical conductive trunk 8 connected to one extending conductive branch 5 One current terminal 9A extending from the power supply unit 9 is connected to the conductive trunk 2 on the power supply unit side, and the other current terminal 9B is connected to the vertical conductive trunk 8 on the heat generation surface 6 so that a current circuit is formed on the heat generating surface 6. A vertical conductive trunk 8 for energizing the conductive trunk 3 formed and located far from the power supply unit 9 side
Is provided between the heat-generating surfaces 6 at the central position, so that a nailable area 12 in which no conductive substance is present can be provided adjacent to the heat-generating surface 6, and the heat generation occupying the entire size can be provided. The area of the surface 6 can be increased.

Further, not only the nailable area 12 can be provided adjacent to each of the heat generating surfaces 6, 6, but also the interval between the nailable areas 12 can be set to the interval between the joists 31 of the floor base. The nail 3 is driven into the nailable area 12 by positioning the nailable area 12 on the joist 31.
5 can accurately fix the joist and fix it without damaging the heat generating surface 6, thereby avoiding the risk of electric leakage.

Furthermore, a heat insulating material sheet 15 is provided on the back surface of the sheet-like surface heating element 10 provided with the nailable area 12 where no conductive substance is present adjacent to the plurality of rows of the heating surfaces 6, 6.
In the surface heat generating device 20 having the heat-insulating material sheet, the adjacent conductive trunks 2, 2, 3 and 3 of the sheet-shaped surface heat generator 10 are connected by the electric wire 14 inserted through the metal pipe 13. By providing a hole 16 at a position where the metal pipe 13 abuts on the metal pipe 13, the metal pipe 13 is housed, and more preferably, a housing hole 17 of the power feeding unit 9 is also provided so that the power feeding unit 9 can be housed. The surface heating device 20 having a uniform thickness can be obtained, and workability is also improved. In addition, although the connecting wires of the conductive trunks 2, 2, 3 and 3 adjacent to the sheet-like surface heating element 10 are present on the above-mentioned line of the nailable area 12, they are protected by the metal pipe 13. even if the tip of the nail 35 implanted into the as shown in Figure 11 is brought into contact with the metal pipe 13 by accident because it has been derived outside or inside the rounded pipe slips its nails destination, the wire 14 Unforeseen situations, such as the nail 35 being driven in, are avoided.

Further, the plurality of rows of heat generating surfaces 6, 6
A heat insulating sheet 1 is provided on the back surface of a sheet-like surface heating element 10 provided with a nailable area 12 adjacent to each of the heating surfaces 6 and 6.
In the case where the heat insulating material sheet 15 is attached to the sheet-shaped surface heating element 10 in the surface heating device 20 to which the sheet 5 is attached, an elongated wood 18 is attached to the back surface of the nailable area 12 of the sheet-shaped heating element 10. By forming a structure in which a synthetic resin foam sheet is bonded between the woods 18, 18, the wood 18 does not sink into the nailed portion like a synthetic resin foam sheet due to nailing, and the surface heating device 20 can be used. It has an advantageous effect for floor heating, for example, it can be fixed to the joists 31 in an orderly and reliable manner.

Further, a plurality of synthetic resin foam sheets are provided.
It consists of connectable beads divided into sheets and
Gaps 21 and 22 are provided in the length direction and the width direction.
Therefore, the synthetic resin foam sheet depends on the heating temperature of the heating surface 6.
Vertical and horizontal dimensions due to the gap between each piece even if the
The effect is obtained that the change is absorbed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a basic mode of a sheet-like surface heating element of the present invention.

Is a partial sectional enlarged view in FIG. 2 A-A line in FIG.

FIG. 3 is a partially enlarged cross-sectional view taken along the line BB of FIG. 1 ;

FIG. 4 is a simplified enlarged cross-sectional view in the width direction of the surface heating device of the present invention.

FIG. 5 is a perspective view showing a state in which a power supply unit side of the surface heating device of the present invention is peeled off.

FIG. 6 is an enlarged cross-sectional view showing a state in which a metal pipe is housed in the surface heating device of the present invention.

FIG. 7 is an enlarged schematic cross-sectional view of a state in which the surface heating device of the present invention is used as floor heating.

FIG. 8 is a rear view showing another embodiment of the heat insulating material sheet of the surface heating device of the present invention.

9 is a simplified cross-sectional enlarged view of the surface heating device of FIG. 8 in a width direction.

10 is an enlarged schematic cross-sectional view of a state in which the surface heating device of FIG. 9 is used as floor heating.

FIG. 11 is a partial cross-sectional view shown for explaining a state where a nail hits a metal pipe during a nailing operation of a floorboard.

FIG. 12 is a perspective view showing an embodiment of a floor base.

FIG. 13 is a perspective view showing another embodiment of the floor base.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 front side insulating film 2 conductive line trunk 3 conductive trunk line 4 conductive branch line 5 conductive branch line 6 heating surface 7 back side insulating film 8 vertical conductive trunk line 9 power supply unit 10 sheet-like surface heating element 11 protective film 12 Nailable area 13 Metal pipe 14 Electric wire 15 Insulation sheet 18 Wood 20 Surface heating device 21 Gap 22 Gap

Claims (4)

(57) [Claims] 1. A surface side from each of the short side of the inner surface at both ends a plurality of conductive main line and a plurality of respective conductive trunk of its ends which is opposed in the width direction extending parallel to the relative insulating film conductive branch line extending alternately to each conductive trunk near are printed with a conductive material that direction, next to the plurality of
The contacting conductive trunk is made by an electric wire inserted through a metal pipe.
The heating material is printed on the printed area of the conductive branch between the opposing conductive trunks at both ends.
A plurality of rows of heat generating surfaces are formed, and between the heat generating surface portions at the center position, the conductive trunks on the power supply unit side and the conductive trunks from the conductive trunk on the opposite side to the power supply unit toward the conductive trunk on the power supply unit side. A tape-shaped vertical conductive trunk line connected to a conductive trunk line on the opposite side of the power supply unit without contacting the conductive branch line extending from the trunk line and one conductive branch line extending from the conductive trunk line is provided. One current terminal extending from the power supply unit is connected to the conductive trunk on the power supply unit side, and the other current terminal is connected to the vertical conductive trunk, respectively, so that a current circuit is formed on each heating surface. disposing a protective film on the lower surface of the printed region portion of the further on its lower surface, the insulating film and the back side insulating film on the back side of the insulating film is disposed is the surface side is bonded at least a peripheral edge portion thereof, each Heat is generated vertically on both sides of the heating surface Sheet surface heating element, characterized in that nailing can range absence of material and the conductive material is provided. 2. A plurality of conductive trunks extending in parallel in the width direction of both ends of the inner surface on the short side of the front side insulating film and a plurality of conductive trunks at both ends thereof, respectively. Conductive branches extending alternately to the vicinity of each of the conductive trunks facing each other are printed with a conductive material, and the plurality of adjacent conductive trunks are connected by an electric wire inserted through a metal pipe, A plurality of rows of heat generating surfaces are formed by printing a conductive heating substance on the printed area of the conductive branch line between the opposing conductive trunks, and further, between the heat generating surfaces in the center, opposite to the power supply section. From the conductive trunk on the side to the conductive trunk on the power supply unit side, without contacting the conductive trunk on the power supply unit and the conductive branch line extending from the conductive trunk, the conductive trunk on the opposite side to the power supply unit and its Connected to one conductive branch extending from the conductive trunk One of the current terminals extending from the power supply unit is connected to the conductive trunk on the power supply unit side, and the other current terminal is connected to the vertical conductive trunk line, respectively. A current circuit is formed on the surface, a protective film is arranged on the lower surface of the heating surface and the printed area portion of the current circuit, and further on the lower surface, an insulating film on the back side is arranged, and the insulating film on the front side and the back side are disposed. An insulating film is adhered at least at the periphery thereof, and a sheet-like surface heating element provided with a nailable area in which a heating substance and a conductive substance do not exist in both longitudinal directions of each heating surface is formed,
Furthermore, a heat insulating sheet is attached to the back of the sheet-shaped surface heating element.
The heat insulation sheet contains the metal pipe and the power supply.
The metal pipe and the power supply section are provided in the holes.
A surface heating device which is housed. 3. The synthetic resin foam sheet bonded to the back surface of the heat-generating surface of the sheet-shaped surface heating element, and the synthetic resin foam sheet bonded to the back surface of the nailable area in the vertical direction. Composed of wood of equal thickness,
Hole for accommodating metal pipe and power supply part is synthetic resin foam sheet
3. The surface emitting device according to claim 2, wherein
Thermal equipment. 4. The synthetic resin foam sheet is divided into a plurality of sheets.
Connected pieces, and between each piece
That they are connected with a gap in the length and width directions
4. The surface heating device according to claim 3, wherein: