TW202123768A - Heating element - Google Patents

Abstract

The purpose of the present invention is to provide a heating element which suppresses power consumption, excessive heat generation and short-circuiting during use, and also has excellent followability. The present invention comprises: a heat emission part body (10) that has a woven fabric or knitted fabric containing a conductive yarn coated with a conductive metal; and electrode parts (30) that are provided at intervals in a direction along the conductive yarn in the heat emission part body, and include a material having a conductive metal.

Description

heating stuff

The present invention relates to a heating element. This application claims priority based on Japanese Patent Application No. 2019-208251, which was filed in Japan on November 18, 2019, and the content is cited here.

As the planar heating element, for example, one using carbon composite fiber is known. Carbon composite fiber requires more electricity due to its higher electrical resistance, so safety is a concern.

Therefore, Patent Document 1 discloses a cloth heater as a heating element. The cloth heater includes a conductive wire coated with a conductive layer (copper, copper alloy, silver, etc.) on the surface of a core wire and arranged to form a plurality of loops. Wind the knitted fabric and electrode part. The electrode part in the heating element is composed of a first electrode wire and a second electrode wire formed by twisting copper of different thicknesses on the outer periphery of the core wire (synthetic fiber, etc.), and the first electrode wire and the second electrode wire are sewn Into the other side of the fabric. [Prior Art Literature] [Patent Literature]

[Patent Document 1] International Publication No. 2013/085051

[The problem to be solved by the invention] However, in the heating element described in Patent Document 1, the conductive portion of the electrode portion is copper, and the electrical resistance is different from that of silver as the conductive portion of the cloth. Therefore, problems of excessive heat generation or temperature unevenness occur. In addition, excessive heat generation may cause a short circuit, so excessive heat generation must be avoided.

For example, when the heating element is used in a protective body that directly comes into contact with the skin, it may cause skin burns, and problems such as failure to function due to a temperature that does not reach the required temperature.

The present invention was completed in consideration of the above points, and its object is to provide a heating element that suppresses power consumption, excessive heat generation or temperature unevenness, and short-circuits during use, and is also excellent in followability. [Means to solve the problem]

According to a first aspect of the present invention, there is provided a heating element including a heating portion main body and an electrode portion, the heating portion main body having a fabric or braid including conductive wires coated with a conductive metal, and the electrode portion is positioned on the heating element. The main body is provided at intervals along the direction of the conductive wire, and includes a material having the conductive metal.

In addition, in the heating element according to one aspect of the present invention, the electrode portion is formed in a region where the conductive metal particles are arranged in the heating portion main body.

In addition, in the heating element of the one aspect of the present invention, the electrode portion is a fabric or a fabric including conductive wires that are covered by the conductive metal and arranged in a direction crossing the direction of the conductive wires. Knitting.

In addition, in the heating element according to one aspect of the present invention, the electrode portion is a foil formed of the conductive metal and arranged in a direction crossing the direction along the conductive line.

In addition, in the heating element according to one aspect of the present invention, at least one of the heating portion main body and the electrode portion has the braid.

In addition, in the heating element of one aspect of the present invention, the knitted object is formed by warp knitting.

In addition, in the heating element of one aspect of the present invention, a plastic film is layered on at least one area of the heating portion main body. [Effects of the invention]

The present invention can provide a heating element that suppresses power consumption, excessive heat generation, temperature unevenness, and short-circuit during use, and has excellent followability.

Hereinafter, an embodiment of the heating element of the present invention will be described with reference to Figs. 1 to 3. In addition, the following embodiments show one aspect of the present invention, and do not limit the present invention, and can be arbitrarily changed within the scope of the technical idea of the present invention. In addition, in the following drawings, in order to make each structure easy to understand, the scale or number of each structure is different from the actual structure.

Fig. 1 is a schematic plan view showing the heating element of the present embodiment. Fig. 2 is a front view of Fig. 1.

As shown in FIG. 1, the heating element 1 includes a heating portion main body 10, an electrode portion 30 and a plastic film 40 (not shown in FIG. 1 ). The heating part main body 10 is formed in a substantially rectangular shape in plan view. The electrode portions 30 are arranged at intervals along the longitudinal direction of the heating portion main body 10. The electrode unit 30 of the present embodiment is arranged with an interval at both ends in the longitudinal direction of the heat generating unit main body 10.

In addition, in the following description, the direction along the conductive line of the heating part body described below and the direction in which the electrode part 30 is arranged on the heating part body 10 is referred to as the X direction, and will cross the direction along the conductive line and be the X direction. The direction orthogonal to the direction is referred to as the Y direction, and the thickness direction of the heat generating portion main body 10 orthogonal to the X direction and the Y direction is referred to as the Z direction, and is appropriately described.

The heat generating body 10 has a rectangular portion 11 located closer to the -Y side than the center in the Y direction, and extends from both ends of the rectangular portion 11 in the X direction to the +Y side and then bends to the center side in the X direction and follows the X direction. The curved portion 12 extending in the direction and the protrusion 13 extending from the front end of the curved portion 12 to the +Y side. The curved portion 12 extending in the X direction is arranged with a gap from the rectangular portion 11. In addition, the front ends of the curved portion 12 and the protrusions 13 are arranged with a gap therebetween.

A terminal 14 is provided in each protrusion 13, respectively. The terminal 14 is connected to the power source 16 via the wiring 15. As the power source 16, either a DC power source or an AC power source can be used. In the case of using a direct current power supply, the power supply 16 can be used to output a direct current (DC) voltage of 1.5 V or more and DC 25 V or less. In this case, as the power source 16, for example, a dry battery of DC 1.5 V, a lithium polymer battery, a lithium battery, and a solid lithium battery can be cited. In addition, the power supply 16 can also use an alternating current (AC)/DC converter to convert AC100 V or AC200 V AC power into, for example, DC 1.5 V or more, DC 25 V or less, and output the converted DC. Constant voltage device for current. When the heating element 1 is used as a protective body or the like, from the viewpoint of portability, the power source 16 is preferably a DC power source (battery). The temperature setting of the heating part body is not particularly specified, and it is preferably set between 20°C and 100°C. As the temperature of the electrode part in this case, it is preferable to be lower than the temperature of the heat-generating part main body, or 20 degrees C or less with respect to the temperature of the heat-generating part main body.

The heating part main body 10 is formed of fabric or knitted fabric. The woven fabric is constructed by woven orthogonally woven threads extending linearly in the longitudinal direction and threads extending linearly in the lateral direction. The braid is constructed by arranging a plurality of loops with threads and winding the loops regularly. As the heat generating part main body 10 of the present embodiment, a knitted fabric is preferable from the viewpoint of stretchability. In addition, as the heat generating body 10 of this embodiment, from the viewpoint that the temperature rises excessively if the expansion and contraction is too large, it is preferable to use the warp knitting which makes the knitted fabric through the loop forward movement rather than the weft knitting which makes the knitted fabric through the horizontal advancement of the loop. .

FIG. 3 is a diagram partially showing the structure of an example of the warp knitted fabric forming the heat generating portion main body 10. As shown in Figure 3, the solid line represents the dyeability thread 61, the dyeability thread 63, and the dyeability thread 65 supplied by the same reed, and the solid line represents the dyeability supplied by other same reeds. Thread 62, dyeable thread 64, dyeable thread 66, dyeable thread 61, dyeable thread 63, dyeable thread 65 and dyeable thread 62, dyeable thread 64, dyeable thread 66 They are grouped in a mirror-symmetrical manner to form a mesh warp knitted fabric. The lines represented by the thick solid lines are the conductive lines 71, 73, and 75 supplied by the same reed, and the lines represented by the thick dashed lines are the conductive lines 72, 74, and 76 supplied by the same reed. 71. The conductive thread 73, the conductive thread 75, the conductive thread 72, the conductive thread 74, and the conductive thread 76 are inserted into a mesh warp knitted fabric formed by grouping dyeable threads.

In FIG. 3, the conductive wires 71, 73, 75 group and another group of conductive wires 72, 74, 76 cross in the warp knitted fabric. As mentioned above, the conductive wires are coated with metal on the surface. Therefore, the adjacent conductive wires cross and are arranged along the X direction to electrically connect substantially all the conductive wires in the warp knitted fabric. As a result, even when one conductive wire is disconnected, it is possible to suppress excessive heat generation or temperature unevenness without heating at a specific position in the Y direction.

The conductive wires 71 to 76 are composed of, for example, a core wire containing fibers and a conductive layer (conductive material) covering the surface of the core wire. As the conductive layer, for example, it is formed of metal such as gold, silver, copper, zinc, lead, tin, aluminum, and iron. The conductive layer can be formed by, for example, vapor deposition, electroplating, etc., depending on the metal used. That is, the conductive wires 71 to 76 are metal-plated wires. The metal forming the conductive layer is preferably silver, copper, gold, and iron, and more preferably silver and copper, considering cost, allergic reactions to living organisms, and resistance.

As the core thread, for example, various synthetic fibers such as polyamide fiber, polyester fiber, polyurethane fiber, nylon fiber, acrylic fiber, vinylon fiber, polyethylene fiber, polyvinyl chloride fiber, polypropylene fiber, etc. can be used; acetate fiber , Polylactic acid fiber and other semi-synthetic fibers; cotton, hemp and other natural fibers; rayon and other regenerated fibers. Regarding the thickness of the conductive thread 71 to the conductive thread 76, in the case of a silver-plated wire, a single or multiple filaments of about 10 d to 110 d are used. In the case of this kind of thread, the silver content rate is calculated as 10 by weight. %～50%.

The electrode portion 30 is formed at both ends of the rectangular portion 11 in the X direction, the curved portion 12 and the protrusion 13 in the heating portion main body 10. As shown in FIGS. 1 and 2, the electrode portion 30 has metal particle layers 31 provided on both end portions of the heating portion main body 10 and the +Z side surface 10a of the heating portion main body 10 as a material having a conductive metal. The metal particle layer 31 is formed in a region where the conductive metal is arranged in the heat generating part main body 10. The method for forming the metal particle layer 31 is not particularly limited. For example, various printing methods such as screen printing, offset printing, and inkjet printing using ink containing metal particles can be selected.

As the metal fine particles forming the metal fine particle layer 31, fine particles of the same metal as the metal forming the conductive layer of the conductive wire 71 to the conductive wire 76 are selected. In this embodiment, as described above, silver fine particles are used in consideration of cost and an allergic reaction to a living body. In more detail, the fine particles are nano-silver particles with a silver particle size of the nanometer level (0.01-50 microns).

Regarding the particles shown in the present embodiment, there are no restrictions on the shape, etc., and they refer to particles having an average particle diameter of 0.01 to 50 μm in the measurement using a dynamic (or static) light scattering measurement device. The average particle diameter of the fine particles is preferably 0.01-50 micrometers, more preferably 0.5-50 micrometers, and still more preferably 1-20 micrometers. As a method for measuring the particle diameter of the fine particles, for example, CGS-3 manufactured by ALV Corporation in Germany, SAXSess mc2 manufactured by Anton Paar Corporation, and the like can be cited.

The electrode part 30 in which the metal particle layer 31 is laminated on the heating part main body 10 functions as a linear conductor by an aggregate of fine metal particles densely arranged. In addition, by attaching the metal particles to the conductive wires, the conductive wires of the heating portion main body 10 and the metal particle layer 31 are electrically connected.

As shown in FIG. 2, the plastic film 40 is laminated on the surface 10 b on the -Z side of the heating part main body 10. The plastic film 40 may also be a structure laminated on both surfaces of the heating part main body 10 in the Z direction. As the plastic film 40, in order to maintain the stretchability of the heat generating part main body 10, it is formed of, for example, an elastomer such as polyester, polyurethane, or polyolefin.

The heating element 1 of the structure can be widely used, for example, to be installed on the inner side of a blanket, etc., installed on the seat surface of a chair, installed on underwear or footwear, or at least a part of a protective body, other equipment or materials, and water contained therein. Insulation and so on.

The heating element 1 of the above-mentioned structure is supplied with power from the power supply 16 via the wiring 15, the terminal 14 and the electrode portion 30, and the conductive wire 71 to the conductive wire 76 are energized, and the heating portion main body 10 generates heat.

In the heating element 1 of the present embodiment, since the metal forming the conductive layer of the conductive wires 71 to 76 in the heating portion main body 10 and the metal forming the electrode portion 30 (metal particle layer 31) are formed of the same metal, it generates heat The difference in resistance between the main body and the electrode portion is reduced, and the risk of excessive heat generation and short circuit of the electrode portion 30 can be suppressed, and safety can be improved. In addition, in the heating element 1 of the present embodiment, since the resistance difference between the heating section main body 10 and the electrode section 30 is small, it is possible to suppress excessive heat generation or temperature unevenness, thereby suppressing repeated use and washing. Deterioration caused by sweat, water, and active agents, and can be kept uniformly at a certain temperature for a long time.

In addition, in the heating element 1 of the present embodiment, since the conductive portions of the heating portion main body 10 and the electrode portion 30 are made of metal and have low electrical resistance, the power required for heating at 40°C, for example, is reduced, and power consumption can be suppressed. In particular, in the heating element 1 of the present embodiment, if silver is used as the conductive metal, power consumption can be further suppressed. In addition, in the heating element 1 of the present embodiment, if the metal fine particle layer 31 is provided as the electrode portion 30, the electrical resistance becomes small. Therefore, excessive heat generation of the electrode portion 30 can be suppressed, and the occurrence of temperature unevenness can be further suppressed.

In addition, in the heating element 1 of the present embodiment, if the heat generating portion main body 10 is formed of warp-knitted fabric, the shrinkage caused by washing or repeated use is relatively small compared with the case of weft-knitted fabric, and therefore the shrinkage accompanying shrinkage can be suppressed. When the temperature of the heating element 1 rises, the temperature change caused by the deformation of the fabric can also be suppressed.

Furthermore, in the heating element 1 of this embodiment, if the plastic film 40 is layered on an area of the heating section body 10, the stretchability of the heating section body 10 can be maintained, and the conductive wires 71 to 76 and the electrode section 30 can be suppressed. Deteriorating, a heating element 1 that stably generates heat even after washing or repeated use can be obtained. In addition, it is also possible to suppress the risk of short circuits due to deterioration.

[Example] Hereinafter, the present invention will be described in detail with examples, but the present invention is not limited to the following examples, and can be implemented with appropriate changes within the scope not departing from the gist of the present invention.

(Example 1 to Example 6, Comparative Example 1 to Comparative Example 2) According to the specifications shown in the following [Table 1], heating elements of Examples 1 to 6, and Comparative Examples 1 to 2 were produced. Specifically, with regard to Examples 1 to 6 and Comparative Example 2, the heat-generating portion main body in which the conductive wire is a silver-plated wire is used. Regarding Comparative Example 1, a heat generating part body in which the conductive thread is a carbon composite fiber is used. In addition, with regard to Examples 1 to 4, the heat generating part body whose knitting method was warp knitting was used. Regarding Example 5 and Comparative Example 1, the heat generating part main body which is a fabric was used. Regarding Example 6 and Comparative Example 2, the heat generating part body whose knitting method was weft knitting was used. In addition, regarding Example 1, an electrode portion formed of a silver conductive wire whose surface of a core wire was coated with silver was used. Regarding Example 2 to Example 3, Example 5 to Example 6, and Comparative Example 1, an electrode portion formed of a silver conductive wire and a silver fine particle layer was used. Regarding Example 4, it was set as an electrode part formed of a silver fine particle layer. Regarding Comparative Example 2, an electrode portion formed of a copper conductive wire whose surface of a core wire was coated with copper was used. Regarding Examples 3 to 6, a heating element with a plastic film layered on one area was set. Regarding Example 1 to Example 2, Comparative Example 1, and Comparative Example 2, a heating element in which a plastic film was not laminated on one side was used.

In the heating element, Silber ZAG (SilbernZAG) (registered trademark) silver ion fiber is used as the silver conductive wire used in the heating part body and the electrode part; 14 copper wires of 50 microns that are plated with nickel are used A conductive thread made of aromatic polyamide fiber wound on 33 decitex is used as a copper conductive thread. The average particle size of the silver fine particle layer is 1 to 5 microns, no other conductive material is blended, and a plastic resin is included in order to make the coating film stretchable. The plastic film is made of polyester and has a thickness of 50 μm. The plastic film is laminated on the body of the heating part and the electrode part by laminating processing.

[Evaluation method] Each of the heating elements of Examples 1 to 6 and Comparative Example 1 used a heat generating body of about 10 cm×about 20 cm, and Comparative Example 2 used a heat of about 8 cm×about 13 cm.

For each of the heating elements, the heating part main body was energized at 7 V. The line passing through the center of each side of the heating part is divided into four parts about 5 cm × about 10 cm (comparative example 2 is about 4 cm × about 6.5 cm). The intermediate temperature calculated by the temperature and the minimum temperature ((maximum temperature + minimum temperature)/2, rounded to the second decimal place), the intermediate temperature of the four parts of the heating part and the intermediate temperature of the two electrode parts total six The difference in the intermediate temperature of the part, the difference in the intermediate temperature caused by repeated use or washing, and the presence or absence of poor energization caused by disconnection, the temperature change of the intermediate temperature of the heating part body caused by repeated use or washing, the knee of the person in charge The flexibility of the bent portion was evaluated separately. The above-mentioned temperatures were measured by a FLIR C2 small thermal imaging camera, and the maximum temperature and the minimum temperature were confirmed for evaluation. Regarding the intermediate temperature of the electrode portion (the + portion and the-portion), the maximum temperature and the minimum temperature of the electrode portion are measured by the thermal imager, and the average value of the temperature at the two points is used as the intermediate temperature of the electrode portion.

Regarding the evaluation of whether the main body of the heating element can generate heat to 40°C at 7 V. When the main body of the heating element is energized at 7 V, set the intermediate temperature of all the four parts to be able to generate heat to 40°C as "○" (OK (okay, OK)), set the case of not heating to 40°C under 7 V as "×" (not good (NG)).

The presence or absence of excessive heat generation (the presence or absence of temperature unevenness) is evaluated based on whether the difference in the intermediate temperature of the four parts of the heating part body and the two parts of the electrode part in total is within 20°C. The case where the difference between the highest temperature and the lowest temperature among the six intermediate temperatures is within 20°C is set to "○" (OK), and the case where the difference exceeds 20°C is set to "×" (NG).

Regarding the evaluation of excessive heat generation (uneven temperature) and poor energization caused by repeated use or washing, the cycle of energizing for 1 hour (7 V), washing and drying with detergent in the washing machine was repeated six times to be the same as the above The method evaluates the difference in the intermediate temperature of a total of six parts. Set the case where the difference between the highest temperature and the lowest temperature of the six intermediate temperatures exceeds 20°C as "×" (NG), and the case where the heating body does not generate heat (due to disconnection) as "△" (No Bad ). In addition, the heating element of Comparative Example 1 in which the intermediate temperature of the four parts of the heating part main body did not generate heat to 40° C. was not evaluated.

Regarding the evaluation of the heating temperature change of the heating part body caused by repeated use or washing, the difference between the initial (six repeated use, before washing) intermediate temperature of each of the four parts of the heating part body and the intermediate temperature after the test If all four parts are below 2°C, set it as "○" (OK), and if the difference in intermediate temperature exceeds 2°C in at least one of the four parts, set it as "△" (No Bad). In addition, the heating elements of Comparative Example 2 in which excessive heat was generated due to repeated use and washing and Example 4 in which energization failure occurred were not evaluated.

The flexibility of the bend is evaluated. The flexibility evaluation was performed by installing each heating element in a cylindrical knee pad (manufactured by Tung Ash Chemical Co., Ltd., auxiliary holder of "Knee Hotton"), and performed ten times by three persons in charge (adults) After the flexion and extension exercises, the case where you feel softness is set to 3 points, the case where you feel a little softness is set to 2 points, and the case where no flexibility is felt is set to 1 point, with one decimal place Calculate the average of 3 people's evaluations. Set 2.5 to 3 points as "○" (OK), 1.5 to 2.4 as "△" (No Bad), and 1.4 or less as "×" (NG).

The body protector is a support device that supports the movable parts (knees, elbows, neck, ankles, shoulders, wrists, waist, hip joints and their surrounding parts) of a person. As the protective body, a protective body having a structure in which a heating element can be incorporated into the human movable part is preferable. As the protective body, a structure formed in a cylindrical shape or a structure formed in a cylindrical shape by connecting the ends of at least one planar body can be adopted. As materials for body protection, such as stretch net material, soft plush material, double needle bed raschel material, single needle bed raschel material, net material and combinations thereof, circular knit fabrics, knitted fabrics, etc., as long as they are stretchable There are no particular limitations on the properties and flexibility of the movable parts (joint parts, etc.) of a person when they are compressed when worn by a person. In addition, in order to obtain cushioning properties and thermal insulation effects, an elastomer foam may be formed.

[Table 1] Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative example 1 Comparative example 2 Conductive thread Silver-plated wire Silver-plated wire Silver-plated wire Silver-plated wire Silver-plated wire Silver-plated wire Carbon composite fiber Silver-plated wire Weaving method Warp knitting Warp knitting Warp knitting Warp knitting Fabric Weft knitting Fabric Weft knitting Electrode Silver conductive wire Silver conductive wire + silver particle layer Silver conductive wire + silver particle layer Silver particle layer Silver conductive wire + silver particle layer Silver conductive wire + silver particle layer Silver conductive wire + silver particle layer Copper conductive wire Membrane layer structure no no Have Have Have Have no no Heat up to 40℃ under 7 V ○ ○ ○ ○ ○ ○ X ○ No excessive heat generation (uneven temperature) ○ ○ ○ ○ ○ ○ - X No excessive heat caused by repeated use or washing (uneven temperature), poor power supply ○ ○ ○ △ ○ ○ - X The difference between the initial temperature and the initial temperature caused by the shrinkage and deformation of the heating part caused by repeated use and washing is less than 2℃ ○ ○ ○ - △ △ - - Flexibility of the bend ○ ○ ○ ○ △ ○ - ○

As shown in [Table 1], in the heating elements of Examples 1 to 6 in which the conductive wire of the heating part body and the conductive layer of the electrode part are made of the same metal, the electric power used for the heating part body to generate heat at 40°C is used. And the difference between the heating temperature of the heating part main body and the electrode part was well evaluated. That is, in the heating elements of Examples 1 to 6, the result that power consumption, excessive heat generation, and temperature unevenness can be suppressed is obtained. In addition, in the heating elements of Examples 1 to 6 in which the conductive wires of the heating portion main body and the conductive layers of the electrode portions are made of the same metal, the difference in resistance is reduced, so it can be estimated that excessive heating and short circuits during use can be suppressed.

In contrast, the heating element of Comparative Example 1 in which the conductive wire of the heating part body and the conductive layer of the electrode part are made of different metals did not receive a good evaluation for the electric power used for the heating part body to generate heat at 40°C. In addition, In Comparative Example 2, a good evaluation was not obtained in terms of excessive heat generation (temperature unevenness). Therefore, when the conductive layer of the conductive wire and the conductive layer of the electrode part are different metals, the result is that at least one of power consumption and excessive heat generation (temperature unevenness) cannot be suppressed.

In addition, in the heating elements of Examples 1 to 3, and Examples 5 to 6 in which the electrode portion is formed of a silver conductive wire and a layer of silver particles, the heating element of the electrode portion caused by repeated use or washing and poor current flow , Get a good evaluation.

In addition, in the heating elements of Examples 1 to 3 in which the knitting method of the heating section body was warp knitting, a good evaluation was obtained that the change in the heating temperature of the heating section body caused by repeated use or washing was 2° C. or less. On the other hand, in the heating element of Example 5, which is a woven fabric, and the heating element of Example 6 in which the weaving method is weft knitting, it is evaluated that the change in the heating temperature of the heating portion body is not controlled to 2°C or less. Therefore, by setting the knitting method of the heat generating part main body to warp knitting, the temperature change of the heat generating part main body caused by repeated use or washing can be suppressed.

In addition, in the heating elements of Examples 1 to 4, Example 6, and Comparative Example 2 in which the conductive wires were silver-plated wires and were knitted fabrics, good evaluations were obtained regarding flexibility. In addition, in the heating element of Example 5, which is a woven fabric, although it is inferior to Examples 1 to 4, it exhibits flexibility.

Above, the preferred embodiments of the present invention have been described with reference to the accompanying drawings, but of course, the present invention is not limited to these examples. The respective shapes or combinations of the constituent members shown in the above examples are just examples, and various changes can be made based on design requirements and the like within the scope not departing from the gist of the present invention.

For example, in the above-mentioned embodiment, the structure in which the heat generating part main body 10 is formed of a warp-knitted fabric is illustrated, but it is not limited to this structure. For example, it may be a structure formed of a weft-knitted fabric. In addition, it may be a structure in which the heating part main body 10 is fabric instead of knitting. When the heating part main body 10 is a fabric, any one of a line extending linearly in the longitudinal direction and a line extending linearly in the lateral direction is a conductive thread, and the above-mentioned electrode portions may be provided on both ends of the conductive thread.

In addition, in the above-mentioned embodiment, the electrode part has at least one of the conductive wire and the metal particle layer, but it is not limited to this structure. For example, it may be formed of conductive metal and crossed along the conductive wire. The foil is configured in the direction of the formation. Even in the case of adopting this structure, the same functions and effects as in the above-mentioned embodiment can be obtained. [Industrial availability]

The present invention can be applied to heating elements.

1: heating element 10: Heating part body 10a: The +Z side surface of the heating part body 10 10b: The surface on the -Z side of the heating part body 10 11: Rectangular part 12: Bend 13: protrusion 14: Terminal 15: Wiring 16: power supply 30: Electrode 31: Metal particle layer 40: plastic film 61, 62, 63, 64, 65: dyeable thread 71, 72, 73, 74, 75, 76: conductive wire

Fig. 1 is a schematic plan view showing the heating element of the present embodiment. Fig. 2 is a front view of Fig. 1. FIG. 3 is a diagram partially showing the structure of an example of the warp knitted fabric forming the heat generating portion main body 10.

1: heating element

10: Heating part body

10a: The +Z side surface of the heating part body 10

11: Rectangular part

12: Bend

13: protrusion

14: Terminal

15: Wiring

16: power supply

30: Electrode

31: Metal particle layer

Claims (7)

A heating element, characterized in that it comprises: The heating element body has a fabric or knitted fabric containing conductive threads covered by conductive metal; and The electrode part is provided at intervals in the direction along the conductive wire in the heating part main body, and includes a material having the conductive metal. The heating element according to claim 1, wherein The electrode portion is formed in a region where the conductive metal particles are arranged in the heating portion main body. The heating element according to claim 1, wherein The electrode part is a woven or knitted fabric including conductive threads that are covered by the conductive metal and arranged in a direction crossing the direction of the conductive threads. The heating element according to claim 1, wherein The electrode part is a foil formed of the conductive metal and arranged in a direction crossing the direction along the conductive line. The heating element according to any one of claim 1 to claim 4, wherein At least one of the heating part main body and the electrode part has the braid. The heating element according to claim 5, wherein The knitting is formed by warp knitting. The heating element according to any one of claim 1 to claim 6, wherein A plastic film is layered on at least one area of the heating part main body.

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