WO2021210678A1

WO2021210678A1 - Heater device

Info

Publication number: WO2021210678A1
Application number: PCT/JP2021/015723
Authority: WO
Inventors: 田中　祐介; 祐哉鈴木; 卓也井頭
Original assignee: 株式会社デンソー
Priority date: 2020-04-17
Filing date: 2021-04-16
Publication date: 2021-10-21

Abstract

Provided is a heater device comprising a heat generating unit (21) which is formed in a linear shape on one surface of an insulating substrate (25) and which generates heat when electrically energized, and a plurality of detection units (27) that radiate heat from the heat generating unit and also detect the proximity or contact of an object. The heat generating unit includes a first heating generating unit (21A) and second heat generating units (21B) disposed to sandwich the first heat generating unit, and the plurality of detection units include a plurality of first detection units (27A) disposed between one second heat generating unit and the first heat generating unit and a plurality of second detection units (27B) disposed between the other second heat generating unit and the first heat generating unit. The plurality of first detection units (27A) are disposed in a first column at predetermined intervals in a certain direction on one surface of the insulating substrate, the plurality of second detection units (27B) are disposed in a second column at predetermined intervals offset in the certain direction with respect to the plurality of detection units in the first column, and the first and second columns are disposed alternately in a direction intersecting the certain direction.

Description

Heater device

Cross-reference to related applications

This application is based on Japanese Patent Application No. 2020-074421 filed on April 17, 2020 and Japanese Patent Application No. 2020-180821 filed on October 28, 2020. The description is incorporated by reference.

This disclosure relates to a heater device.

Conventionally, there is a heater device described in Patent Document 1. In this device, a heat generating portion that is arranged on one surface side of an insulating substrate and generates heat by energization, a transmitting electrode and a receiving electrode that are arranged on one surface side of an insulating substrate and form an electric field, and a change in the electric field formed by each of these electrodes. It is provided with a detection circuit that detects the contact or proximity of an object based on the above. Then, when the detection circuit detects the contact or proximity of the object, the amount of energization to the heat generating portion is lowered from the normal state or the energization is stopped.

Japanese Unexamined Patent Publication No. 2019-184171

In the apparatus described in Patent Document 1, the transmitting electrode and the receiving electrode receive the heat of the heat generating portion and diffuse it in the surface direction to improve the surface temperature distribution. However, according to the study of the inventor, in this device, the temperature distribution becomes uneven because the density difference between the wirings of the heat generating portion, the transmitting electrode, and the receiving electrode is large. An object of the present disclosure is to further make the temperature distribution uniform.

According to one aspect of the present disclosure, the heater device is formed in a linear shape on one surface of an insulating substrate, and a plurality of heat generating portions that generate heat by energization and a plurality of heater devices that dissipate heat from the heat generating portion and detect proximity or contact of an object. The heat-generating unit includes a first heat-generating unit and a second heat-generating unit arranged so as to sandwich the first heat-generating unit, and a plurality of detection units are of the second heat-generating unit. It has a plurality of first detection units arranged between one and the first heat generation unit, and a plurality of second detection units arranged between the other of the second heat generation units and the first heat generation unit. , The plurality of second detection units are shifted in one direction with respect to the first row in which a plurality of first detection units are arranged at predetermined intervals in one direction on one surface of the insulating substrate and the plurality of detection units in the first row. The second row arranged at predetermined intervals is alternately arranged in a direction intersecting with one direction.

According to such a configuration, the first detection unit and the second detection unit that dissipate the heat of the heat generating portion are uniformly arranged, so that the temperature distribution can be further made uniform.

Note that the reference symbols in parentheses attached to each component or the like indicate an example of the correspondence between the component or the like and the specific component or the like described in the embodiment described later.

It is a figure which showed the mounting position of the heater device which concerns on 1st Embodiment. It is an external view of the heater device which concerns on 1st Embodiment. It is a front view of the heater device which concerns on 1st Embodiment, and is the figure which transmitted through the cover member. FIG. 6 is a sectional view taken along line IV-IV in FIG. It is a figure which showed the temperature distribution of the comparative example which arranged the plurality of 1st detection part and the plurality of 2nd detection part in a grid pattern. It is a figure which showed the temperature distribution when a plurality of 1st detection part and a plurality of 2nd detection part were staggered arrangement. It is a partially enlarged view of the front view of the heater device which concerns on 2nd Embodiment, and is the figure which transmitted through the cover member. It is a partially enlarged view of the front view of the heater device which concerns on 3rd Embodiment, and is the figure which transmitted through the cover member. It is a front view of the heater device which concerns on 4th Embodiment, and is the figure which passed through the cover member.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In each of the following embodiments, the same or equal parts are designated by the same reference numerals, and the description thereof will be omitted.

(First Embodiment)
The heater device according to the first embodiment will be described with reference to FIGS. 1 to 5B. As shown in FIG. 1, the heater device 20 is installed in the room of a moving body such as a road traveling vehicle. The heater device 20 constitutes a part of the heating device for the room. The heater device 20 is an electric heater that generates heat by being supplied with power from a power source such as a battery or a generator mounted on a moving body. The heater device 20 is formed in a thin plate shape. The heater device 20 generates heat when electric power is supplied.

As shown in FIG. 2, the heater device 20 has a surface having a heat generating surface 24a that radiates radiant heat H mainly in a direction perpendicular to the surface in order to warm an object positioned in a direction perpendicular to the surface thereof. It can be called a state heater.

A seat 11 is installed in the room for the occupant 12 to sit on. The heater device 20 is installed indoors so as to radiate radiant heat H to the feet of the occupant 12. The heater device 20 can be used as a device for promptly providing warmth to the occupant 12 immediately after the start of another heating device, for example. The heater device 20 is installed on the wall surface of the room.

The heater device 20 is installed so as to face the occupant 12 in the assumed normal posture. The road vehicle has a steering column 14 for supporting the steering wheel 13. The heater device 20 is installed on the lower surface of the steering column 14 and the lower surface of the instrument panel cover 15 so as to face the occupant 12.

Next, the configuration of the heater device 20 will be described. As shown in FIGS. 3 to 4, the heater device 20 includes a heat generating portion 21, a transmitting electrode 23, a receiving electrode 24, an insulating substrate 25, and a cover member 26.

The insulating substrate 25 is composed of a plate-shaped member extending along an XY plane defined by an axis X and an axis Y. The insulating substrate 25 has a thickness in the direction of the axis Z. The insulating substrate 25 is formed in a substantially quadrangular thin plate shape. The insulating substrate 25 is made of a resin material having high insulating properties and withstanding high temperatures, for example, a polyimide film. A heat generating portion 21, a transmitting electrode 23, a receiving electrode 24, and a cover member 26 are formed on the surface of the insulating substrate 25 on the occupant side.

The heat generating portion 21 is linear and is formed so as to meander on one surface of the insulating substrate 25. That is, the heat generating portion 21 having a linear shape is formed on one surface of the insulating substrate 25 so as to meander greatly.

In this way, since the heat generating portion 21 is formed so as to meander greatly, the temperature distribution can be made uniform.

Further, since the heat generating portion 21 has a linear shape, when the occupant's fingers or the like come into contact with each other, the heat transfer flowing into the fingers is suppressed. As a result, the temperature of the contacted portion can be rapidly lowered, and the thermal discomfort of the occupant can be suppressed.

The heat generating unit 21 has a first heat generating unit 21A, a second heat generating unit 21B, and a third heat generating unit 21C. As shown in FIG. 3, the first heat generating unit 21A, the second heat generating unit 21B, and the third heat generating unit 21C are connected so as to form a single wire. The second heat generating portion 21B can be regarded as being arranged so as to sandwich the first heat generating portion 21A.

The heat generating portion 21 is made of a conductive member. Specifically, the heat generating portion 21 can be configured by using a metal such as copper, an alloy of copper and tin (Cu—Sn), silver, tin, stainless steel, nickel, and nichrome, and an alloy containing these. ..

Connection terminals 28 are formed at both ends of the heat generating portion 21. Each connection terminal 28 is connected to a control unit (not shown).

The transmitting electrode 23 and the receiving electrode 24 are formed of a conductive metal material, and are formed between adjacent heat generating portions 21.

The heat generating portion 21, the transmitting electrode 23, and the receiving electrode 24 are made of a material having a higher thermal conductivity than the insulating substrate 25 and the cover member 26. The transmitting electrode 23 and the receiving electrode 24 have a function of diffusing the heat generated by the heat generating portion 21 in the plane direction.

The transmitting electrode 23 has a linear transmitting electrode main wire portion 231 and a transmitting electrode branch wire portion 232 branching from the transmitting electrode main wire portion 231 and extending toward the receiving electrode 24 side. The transmitting electrode branch line portion 232 of the present embodiment is formed so as to extend in a direction orthogonal to the transmitting electrode main line portion 231. The transmission electrode main wire portion 231 extends along one of the adjacent heat generating portions 21. A connection terminal 291 is connected to the transmission electrode 23.

The receiving electrode 24 has a linear receiving electrode main wire portion 241 and a receiving electrode branch wire portion 242 branching from the receiving electrode main wire portion 241 and extending toward the transmitting electrode 23 side. The receiving electrode branch line portion 242 of the present embodiment is formed so as to extend in a direction orthogonal to the receiving electrode main line portion 241. The receiving electrode main line portion 241 extends along the other adjacent heat generating portion 21. A connection terminal 292 is connected to the receiving electrode 24.

Further, a control device (not shown) is connected to the connection terminal 28, the connection terminal 291 and the connection terminal 292 described above.

Further, the two transmitting electrode branch line portions 232 of the transmitting electrode 23 are formed so as to sandwich one receiving electrode branch line portion 242 of the receiving electrode 24.

The detection unit 27 is composed of the transmission electrode main line portion 231 of the transmission electrode 23, the two transmission electrode branch line portions 232, the reception electrode main line portion 241 of the reception electrode 24, and one reception electrode branch line portion 242. The plurality of detection units 27 diffuse the heat of the heat generation unit 21 in the plane direction to dissipate heat, and form an electric field E1 for detecting the proximity or contact of an object.

In the present embodiment, among the plurality of detection units 27, the detection unit 27 arranged between one of the second heat generation units 21B and the first heat generation unit 21A is called the first detection unit 27A, and the second heat generation unit 21B The detection unit 27 arranged between the other and the first heat generation unit 21A is referred to as a second detection unit 27B.

In this heater device, the first row and the second row are alternately arranged in the Y direction orthogonal to the X direction. The first row is a row in which a plurality of first detection units 27A are arranged at predetermined intervals on one surface of the insulating substrate 25 in the X direction. The second row is a row in which a plurality of second detection units 27B are arranged at predetermined intervals with respect to the first detection unit 27A in the first row by shifting them in the X direction.

Further, the plurality of second detection units 27B are arranged at positions shifted in the X direction with respect to the plurality of first detection units 27A at 1/2 intervals of the predetermined intervals of the plurality of first detection units 27A. That is, the plurality of second detection units 27B are arranged at positions shifted in the X direction by half a pitch of the pitch which is a predetermined interval of the plurality of first detection units 27A. In this way, the plurality of first detection units 27A and the plurality of second detection units 27B are staggered.

Next, the operation of this heater device will be described.

When a voltage is applied between the two connection terminals 28 arranged at both ends of the heat generating unit 21, the heat generating unit 21 generates heat. The heat of the heat generating unit 21 propagates to the detection unit 27 and is dissipated by the detection unit 27.

Further, when a predetermined voltage is applied between the connection terminal 291 and the connection terminal 292, an electric field E is formed between the transmission electrode 23 and the reception electrode 24, as shown in FIG. Here, for example, when a human finger comes close to or comes into contact between the transmitting electrode 23 and the receiving electrode 24, a part of the electric field E moves to the human finger, the electric field E detected by the receiving electrode 24 decreases, and the transmitting electrode The capacitance between the 23 and the receiving electrode 24 changes.

In a control device (not shown), the human finger determines proximity or contact based on whether or not the change in capacitance between the transmitting electrode 23 and the receiving electrode 24 is equal to or greater than a threshold value. When contact or proximity of an object is detected, this control device lowers the amount of energization to the heat generating portion 21 or stops energization. As a result, the thermal discomfort of the occupant can be reduced.

In FIG. 5A, the plurality of second detection units 80B are shifted in one direction with respect to the first row in which a plurality of first detection units 80A are arranged at predetermined intervals in one direction and the first detection unit 80A in the first row. A comparative example is shown in which the second column, which is arranged in one direction at predetermined intervals, is alternately arranged in the Y direction.

In this comparative example, a region where the first detection unit 80A and the second detection unit 80B are dense and a region where the second detection unit 80B is dense are formed, the temperature is high in the dense region, and the temperature is low in the sparse region. Therefore, the temperature unevenness becomes large.

On the other hand, in FIG. 5B, the plurality of second detection units 27B are arranged in one direction with respect to the first row in which the plurality of first detection units 27A are arranged at predetermined intervals and the first detection unit 27A in the first row. The second row, which is staggered and arranged at predetermined intervals, is alternately arranged in the Y direction. That is, FIG. 5B has the same configuration as the heater device of the present embodiment.

In the heater device of the present embodiment, since the first detection unit 27A and the second detection unit 27B in the first row are uniformly arranged, the temperature distribution is also uniform and the temperature unevenness is reduced.

As described above, the heater device of the present embodiment is formed in a linear shape on one surface of the insulating substrate 25, and the heat generating portion 21 that generates heat by energization dissipates the heat of the heat generating portion and brings the objects close to or in contact with each other. It includes a plurality of detection units 27 for detecting. Further, the heat generating portion includes a first heat generating portion 21A and a second heat generating portion 21B arranged so as to sandwich the first heat generating portion 21A. Further, the plurality of detection units 27 include a plurality of first detection units 27A arranged between one of the second heat generation units 21B and the first heat generation unit 21A, and the other of the second heat generation units 21B and the first heat generation unit. It has a plurality of second detection units 27B arranged between the 21A and the 21A. Then, the plurality of second detection units 27B are provided to the first row in which the plurality of first detection units 27A are arranged at predetermined intervals on one surface of the insulating substrate 25 and the plurality of detection units 27 in the first row. The second row, which is staggered in one direction and arranged at predetermined intervals, is alternately arranged in the direction intersecting the one direction.

According to such a configuration, the first detection unit 27A and the second detection unit 27B that dissipate the heat of the heat generating unit 21 are uniformly arranged, so that the temperature distribution can be further made uniform.

Further, the plurality of second detection units 27B are arranged at positions shifted in one direction with respect to the plurality of first detection units 27A at 1/2 intervals of the predetermined intervals of the plurality of first detection units 27A.

As a result, the plurality of first detection units 27A and the plurality of second detection units 27B are staggered, so that the temperature distribution can be further made uniform.

Further, the heat generating portion 21 is linear and is formed so as to meander on one surface of the insulating substrate 25. Therefore, the temperature distribution can be further made uniform.

(Second Embodiment)
The heater device according to the second embodiment will be described with reference to FIG. As shown in the figure, the heat generating portion 21 of the heater device of the present embodiment has a curved portion 211 having a curved shape. Further, the transmitting electrode main line portion 231 of the transmitting electrode 23 and the receiving electrode main wire portion 241 of the receiving electrode 24 each have a waveform.

The heat generating unit 21 has a first heat generating unit 21A and a second heat generating unit 21B arranged so as to sandwich the first heat generating unit 21A.

Further, the plurality of detection units 27 include a plurality of first detection units 27A arranged between one of the second heat generation units 21B and the first heat generation unit 21A, and the other of the second heat generation units 21B and the first heat generation unit. It has a plurality of second detection units 27B arranged between the 21A and the 21A.

Further, the first heat generating portion 21A and the second heat generating portion 21B each have a wave-shaped peak portion 21M protruding in a direction intersecting one direction and a wave-shaped valley portion protruding in a direction opposite to the direction intersecting one direction. It has 21V.

Further, the mountain portion 21M of the second heat generating portion 21B and the peak portion 21M of the first heating portion 21A face each other, and the valley portion 21V of the second heating portion 21B and the valley portion 21V of the first heating portion 21A are opposed to each other. Are facing each other.

Then, the detection unit 27 is located between the mountain portion 21M of one second heat generation unit 21B and the mountain portion 21M of the first heat generation unit 21A, and the valley portion 21V and the first heat generation portion of the other second heat generation portion 21B. It is arranged between the valley portion 21V of 21A and the valley portion 21V.

As described above, between the mountain portion 21M of the second heat generating portion 21B and the peak portion 21M of the first heating portion 21A, and the valley portion 21V of the second heating portion 21B and the valley portion 21A of the first heating portion 21A. The detection unit 27 can be arranged between the unit 21V and the unit 21V.

Further, the first heat generating portion 21A and the second heat generating portion 21B have a curved portion 211 forming a waveform.

The heat generating portion 21 having a linear shape can be regarded as a wire stretched in a tense state, and it is not possible to sufficiently secure the strength when an external force is applied to the heat generating portion 21.

On the other hand, the curved portion 211 having a curved shape can be regarded as a wire loosely stretched so as to be curved, and when an external force is applied to the heat generating portion 21 as compared with the heat generating portion having a linear shape. More strength can be secured.

Further, the transmitting electrode main wire portion 231 of the transmitting electrode 23 and the receiving electrode main wire portion 241 of the receiving electrode 24 are located between one of the second heat generating portions 21B and the first heat generating portion 21A, and the other of the second heat generating portion 21B, respectively. It is arranged between the first heat generating portion 21A and the first heat generating portion 21A.

The transmitting electrode main wire portion 231 of the transmitting electrode 23 and the receiving electrode main wire portion 241 of the receiving electrode 24 are formed so as to extend along the first heat generating portion 21A and the second heat generating portion 21B, respectively.

Then, the transmitting electrode main line portion 231 of the transmitting electrode 23 and the receiving electrode main wire portion 241 of the receiving electrode 24 each have a waveform. Therefore, the strength when an external force is applied to the transmitting electrode 23 and the receiving electrode 24 is higher than that in the case where the transmitting electrode main wire portion 231 of the transmitting electrode 23 and the receiving electrode main wire portion 241 of the receiving electrode 24 are formed in a straight line. Can be secured.

(Third Embodiment)
The heater device according to the third embodiment will be described with reference to FIG. As shown in the figure, the heat generating portion 21 of the heater device of the present embodiment has a curved portion 211 having a curved shape. Further, the transmitting electrode main line portion 231 of the transmitting electrode 23 and the receiving electrode main wire portion 241 of the receiving electrode 24 each have a waveform.

Further, the mountain portion 21M of the second heat generating portion 21B and the valley portion 21V of the first heat generating portion 21A face each other. Further, the valley portion 21V of the other second heat generating portion 21B and the mountain portion 21M of the first heat generating portion 21A face each other.

Then, the detection unit 27 is located between the mountain portion 21M of one second heat generation portion 21B and the valley portion 21V of the first heat generation portion 21A, and the valley portion 21V and the first heat generation portion of the other second heat generation portion 21B. It is arranged between the mountain part 21M of 21A and the mountain part 21M.

According to this, the heat of the heat generating unit 21 is sufficiently dissipated from the detection unit 27 formed at the position where the distance between the first heat generating unit 21A and the second heat generating unit 21B is maximum, so that the temperature unevenness is further further increased. Can be reduced.

Further, the transmitting electrode main line portion 231 of the transmitting electrode 23 and the receiving electrode main wire portion 241 of the receiving electrode 24 each have a waveform. Therefore, the strength when an external force is applied to the transmitting electrode 23 and the receiving electrode 24 is higher than that in the case where the transmitting electrode main wire portion 231 of the transmitting electrode 23 and the receiving electrode main wire portion 241 of the receiving electrode 24 are formed in a straight line. Can be secured.

(Fourth Embodiment)
The heater device according to the fourth embodiment will be described with reference to FIG. As shown in the figure, the first detection unit 27A and the second detection unit 27B of the heater device of the present embodiment each have a receiving electrode 24 and a transmitting electrode 23 arranged so as to sandwich the receiving electrode 24. There is. Specifically, the transmitting electrode 23 is formed so as to sandwich the receiving electrode 24 in the Y direction of the insulating substrate 25.

Further, the first detection unit 27A and the second detection unit 27B are arranged so as to be sandwiched between the adjacent heat generating units 21.

Specifically, the heat generating section 21 has a first heating section 21A, a second heating section 21B, and a third heating section 21C. The first heat generating portion 21A and the second heat generating portion 21B are formed so as to extend in the X direction. Further, the first heat generating portion 21A and the second heat generating portion 21B are arranged alternately as they proceed in the Y direction. Then, the third heat generating portion 21C connects one end of the first heating portion 21A in the X direction and one end of the second heating portion 21B in the X direction, and connects the other end of the first heating portion 21A in the X direction and the second heating portion. It is formed so as to connect the other end of 21B in the X direction. In this way, the first heat generating portion 21A, the second heat generating portion 21B, and the third heat generating portion 21C are formed so as to form a meandering line. The first detection unit 27A is arranged between the adjacent second heat generation unit 21B and the adjacent first heat generation unit 21A, and the second detection unit 27B is adjacent to the adjacent second heat generation unit 21B. It is arranged between the heat generating portion 21A and the heat generating portion 21A.

The receiving electrode 24 has a receiving electrode main line portion 241 extending in the same direction as the first heat generating portion 21A and the second heating portion 21B, and a receiving electrode branch line extending from the receiving electrode main line portion 241 in a direction intersecting the receiving electrode main line portion 241. It has a part 242 and a part 242. The receiving electrode branch line portion 242 of the present embodiment is formed so as to extend in a direction orthogonal to the receiving electrode main line portion 241.

The transmitting electrode 23 is in the same direction as the first heat generating portion 21A and the second heating portion 21B, that is, in the direction intersecting the transmitting electrode main wire portion 231 extending in the X direction and the transmitting electrode main wire portion 231 to the transmitting electrode main wire portion 231. It has an extending transmission electrode branch line portion 232 and. The transmitting electrode 23 further has a transmitting electrode connecting portion 233 connecting between two transmitting electrode main wire portions 231 extending in parallel in the X direction. The transmitting electrode branch line portion 232 of the present embodiment is formed so as to extend toward the adjacent receiving electrode 24 side. Further, the transmitting electrode 23 is formed in a U shape on one surface of the insulating substrate 25.

Connection terminals

291 and 293 are formed at both ends of the transmitting electrode 23, respectively.

The receiving electrode 24 and the transmitting electrode 23 are each connected to a signal terminal of an integrated circuit (not shown). Further, the transmitting electrode 23 is grounded inside the integrated circuit.

By the way, according to the study by the inventors, in the heater device in which the heat generating unit 21 and the detecting unit 27 are arranged on one surface of the insulating substrate 25, the detecting unit 27 is easily affected by the noise emitted from the heat generating unit 21. It turned out.

Therefore, in the heater device of the present embodiment, the transmitting electrode 23 is arranged so as to sandwich the receiving electrode 24 between the heat generating unit 21 and the receiving electrode 24 of the detecting unit 27. Specifically, a U-shaped transmitting electrode 23 is formed between the first heat generating portion 21A and the second heating portion 21B, and the receiving electrode 24 is placed inside the transmitting electrode 23 so as to be sandwiched between the transmitting electrodes 23. It is formed. As a result, the influence of noise emitted from the heat generating portion 21 is suppressed.

As described above, in the present heater device, the plurality of detection units include a transmission electrode 23 and a reception electrode 24 that form an electric field for detecting the proximity or contact of an object. Further, the receiving electrode 24 is arranged between one of the second heat generating parts 21B and the first heat generating part 21A, and between the other of the second heat generating parts 21B and the first heat generating part 21A, and the first heat generating part 21A. It also has a receiving electrode main wire portion 241 extending along the second heat generating portion 21B. Further, the transmitting electrode 23 sandwiches the receiving electrode main wire portion 241 between one of the second heat generating portions 21B and the first heat generating portion 21A and between the other of the second heat generating portions 21B and the first heat generating portion 21A. It has a transmission electrode main wire portion 231 arranged in such a manner. The transmission electrode main wire portion 231 extends along the first heat generating portion 21A and the second heat generating portion 21B.

According to the above configuration, the transmitting electrode 23 is a receiving electrode between one of the second heat generating parts 21B and the first heat generating part 21A, and between the other of the second heat generating parts 21B and the first heat generating part 21A. It has a transmitting electrode main wire portion 231 arranged so as to sandwich the main wire portion 241. The transmission electrode main wire portion 231 extends along the first heat generating portion 21A and the second heat generating portion 21B. Therefore, it is possible to suppress the influence of noise emitted from one or the other of the first heat generating unit 21A and the second heat generating unit 21B on the receiving electrode 24.

Further, the transmitting electrode 23 has a transmitting electrode branch line portion 232 extending from the transmitting electrode main line portion 231 in a direction intersecting the transmitting electrode main wire portion 231. Further, the receiving electrode 24 has a receiving electrode branch line portion 242 extending from the receiving electrode main line portion 241 in a direction intersecting the receiving electrode main line portion 241.

In this way, the transmitting electrode 23 can be configured to have the transmitting electrode branch line portion 232 extending from the transmitting electrode main line portion 231 in the direction intersecting the transmitting electrode main wire portion 231. Further, the receiving electrode 24 can be configured to have a receiving electrode branch line portion 242 extending from the receiving electrode main line portion 241 in a direction intersecting with the receiving electrode main line portion 241.

(Other embodiments)
(1) In each of the above embodiments, the detection unit 27 is formed by the transmission electrode main line portion 231 of the transmission electrode 23, the two transmission electrode branch line portions 232, the reception electrode main line portion 241 of the reception electrode 24, and one reception electrode branch line portion 242. Was configured. However, the configuration of the detection unit 27 is not limited to such a configuration.

(2) In each of the above embodiments, the plurality of second detection units 27B are shifted in one direction with respect to the plurality of first detection units 27A at 1/2 intervals of the predetermined intervals of the plurality of first detection units 27A. Placed in position.

However, the length of shifting the plurality of second detection units 27B with respect to the plurality of first detection units 27A is not 1/2 of the predetermined interval of the first detection unit 27A. May be good.

(3) In each of the above embodiments, a plurality of second detection units 27B are provided for a first row in which a plurality of first detection units 27A are arranged at predetermined intervals in one direction and a plurality of detection units 27 in the first row. The second row, which was arranged at predetermined intervals by shifting in one direction, was alternately arranged in a direction orthogonal to one direction. However, the direction in which the first row and the second row are alternately arranged does not have to be a direction orthogonal to one direction.

Note that this disclosure is not limited to the above-described embodiment, and can be changed as appropriate. Further, the above-described embodiments are not unrelated to each other, and can be appropriately combined unless the combination is clearly impossible. Further, in each of the above embodiments, it goes without saying that the elements constituting the embodiment are not necessarily essential except when it is clearly stated that they are essential and when they are clearly considered to be essential in principle. stomach. Further, in each of the above embodiments, when numerical values such as the number, numerical values, quantities, and ranges of the constituent elements of the embodiment are mentioned, when it is clearly stated that they are particularly essential, and in principle, the number is clearly limited to a specific number. It is not limited to the specific number except when it is done. Further, in each of the above embodiments, when referring to the material, shape, positional relationship, etc. of the constituent elements, etc., except when specifically specified or when the material, shape, positional relationship, etc. are limited to a specific material, shape, positional relationship, etc. in principle. , The material, shape, positional relationship, etc. are not limited.

(summary)
According to the first aspect shown in a part or all of the above-described embodiments, the heater device is formed in a linear shape on one surface of the insulating substrate, and dissipates heat from the heat generating portion that generates heat by energization and the heat generating portion. It is also provided with a plurality of detection units for detecting the proximity or contact of an object. Further, the heat generating portion includes a first heat generating portion and a second heat generating portion arranged so as to sandwich the first heat generating portion. Further, the plurality of detection units are arranged between the plurality of first detection units arranged between one of the second heat generation parts and the first heat generation part, and between the other of the second heat generation parts and the first heat generation part. It has a plurality of second detection units and the like. Then, the plurality of second detection units are shifted in one direction with respect to the first row in which the plurality of first detection units are arranged at predetermined intervals in one direction on one surface of the insulating substrate and the plurality of detection units in the first row. The second row arranged at predetermined intervals is alternately arranged in a direction intersecting with one direction.

Further, according to the second viewpoint, the plurality of second detection units are located at positions shifted in one direction by 1/2 of the predetermined interval of the plurality of first detection units with respect to the plurality of first detection units. Have been placed.

As a result, the plurality of first detection units and the plurality of second detection units are staggered, so that the temperature distribution can be further made uniform.

Further, according to the third viewpoint, the first heat generating portion and the second heat generating portion have a curved portion forming a waveform.

The curved part that forms a curve can be regarded as a wire that is loosely stretched so as to bend, and the strength when an external force is applied to the heat generating part is secured more than that of the heat generating part that forms a linear shape. Can be done.

Further, according to the fourth aspect, the heater device includes a transmitting electrode and a receiving electrode that form an electric field for detecting the proximity or contact of an object. Further, the transmitting electrode is arranged between one of the second heat-generating portions and the first heat-generating portion and between the other of the second heat-generating portions and the first heat-generating portion, and is located in the first heat-generating portion and the second heat-generating portion. It has a main line that extends along it. Further, the receiving electrodes are arranged between one of the second heat-generating portions and the first heat-generating portion and between the other of the second heat-generating portions and the first heat-generating portion, and are located in the first heat-generating portion and the second heat-generating portion. It has a main line that extends along it. The main line portion of the transmitting electrode and the main line portion of the receiving electrode each have a waveform.

Therefore, it is possible to secure more strength when an external force is applied to the transmitting electrode and the receiving electrode as compared with the case where the main wire portion of the transmitting electrode and the main wire portion of the receiving electrode are formed in a straight line.

Further, according to the fifth viewpoint, the first heat generating portion and the second heat generating portion each project a wave-shaped mountain portion protruding in a direction intersecting one direction and a direction opposite to the direction intersecting one direction. It has a wavy valley and.

At least one of the peaks of the second heat generating portion and the peak of the first heat generating portion face each other, and the other valley of the second heat generating portion and the valley of the first heat generating portion face each other. It is one side.

Then, the detection unit is located between the mountain portion of one second heat generating portion and the peak portion of the first heat generating portion, and between the valley portion of the second heat generating portion and the valley portion of the first heat generating portion. Have been placed.

In this way, the detection unit is located between the mountain portion of one second heat generating portion and the peak portion of the first heat generating portion, and between the valley portion of the second heat generating portion and the valley portion of the first heat generating portion. Can be placed.

Further, according to the sixth viewpoint, the first heat generating portion and the second heat generating portion each project a wave-shaped mountain portion protruding in a direction intersecting one direction and a direction opposite to the direction intersecting one direction. It has a wavy valley and.

Further, at least one of the peaks of the second heat generating portion and the valley portion of the first heat generating portion face each other, and the other valley portion of the second heat generating portion and the valley portion of the first heat generating portion face each other. It is one side.

Then, the detection unit is located between the mountain portion of one second heat generating portion and the valley portion of the first heat generating portion, and between the valley portion of the second heat generating portion and the valley portion of the first heat generating portion. Have been placed.

According to this, the heat of the heat generating part is sufficiently dissipated from the detection part formed at the place where the distance between the first heat generating part and the second heat generating part is maximized, so that the temperature unevenness can be further reduced. Can be done.

Further, according to the seventh aspect, the plurality of detection units include a transmitting electrode and a receiving electrode that form an electric field for detecting the proximity or contact of an object. Further, the receiving electrodes are arranged between one of the second heat-generating portions and the first heat-generating portion and between the other of the second heat-generating portions and the first heat-generating portion, and are located in the first heat-generating portion and the second heat-generating portion. It has a receiving electrode main line portion extending along the line. The transmitting electrode is arranged so as to sandwich the receiving electrode main wire portion between one of the second heat generating portions and the first heat generating portion and between the other of the second heat generating portions and the first heat generating portion. It has a transmission electrode main wire portion extending along the first heat generating portion and the second heat generating portion.

According to this, the transmitting electrode is arranged so as to sandwich the receiving electrode main wire portion between one of the second heat generating portions and the first heat generating portion and between the other of the second heat generating portions and the first heat generating portion. It has a main line portion of the transmitting electrode. The main line portion of the transmitting electrode extends along the first heat generating portion and the second heat generating portion. Therefore, it is possible to suppress the influence of noise emitted from one or the other of the first heat generating portion and the second heat generating portion on the receiving electrode.

Further, according to the eighth viewpoint, the transmitting electrode has a transmitting electrode branch line portion extending from the transmitting electrode main line portion in a direction intersecting the transmitting electrode main line portion. Further, the receiving electrode has a receiving electrode branch line portion extending from the receiving electrode main line portion in a direction intersecting the receiving electrode main line portion.

In this way, the transmitting electrode can be configured to have a transmitting electrode branch line portion extending from the transmitting electrode main line portion in a direction intersecting the transmitting electrode main line portion. Further, the receiving electrode may be configured to have a receiving electrode branch line portion extending from the receiving electrode main line portion in a direction intersecting the receiving electrode main line portion.

Claims

A heat generating portion (21) formed in a linear shape on one surface of the insulating substrate (25) and generating heat by energization,
A plurality of detection units (27) that dissipate heat from the heat generating unit and detect proximity or contact of an object are provided.
The heat-generating portion includes a first heat-generating portion (21A) and a second heat-generating portion (21B) arranged so as to sandwich the first heat-generating portion.
The plurality of detection units include the plurality of first detection units (27A) arranged between one of the second heat generation units and the first heat generation unit, the other of the second heat generation units, and the first. It has a plurality of second detection units (27B) arranged between the heat generation unit and
The plurality of second detections are performed on the first row in which the plurality of first detection units (27A) are arranged at predetermined intervals in one direction on one surface of the insulating substrate, and the plurality of detection units in the first row. A heater device in which a second row in which portions (27B) are displaced in one direction and arranged at predetermined intervals are alternately arranged in a direction intersecting the one direction.
The plurality of second detection units are arranged at positions shifted in one direction from the plurality of first detection units at 1/2 intervals of the predetermined intervals of the plurality of first detection units. Item 2. The heater device according to item 1.
The heater device according to claim 1 or 2, wherein the first heat generating portion and the second heat generating portion have a curved portion (211) forming a waveform.
The plurality of detection units include a transmitting electrode (23) and a receiving electrode (24) that form an electric field for detecting the proximity or contact of the object.
The transmitting electrode is arranged between one of the second heat-generating portions and the first heat-generating portion, and between the other of the second heat-generating portions and the first heat-generating portion, and the first heat-generating portion and the first heat-generating portion. It has a transmitting electrode main wire portion (231) extending along the second heat generating portion, and has a transmitting electrode main wire portion (231).
The receiving electrode is arranged between one of the second heat-generating parts and the first heat-generating part, and between the other of the second heat-generating parts and the first heat-generating part, and the first heat-generating part and the first heat-generating part. It has a receiving electrode main wire portion (241) extending along the second heat generating portion, and has a receiving electrode main wire portion (241).
The heater device according to any one of claims 1 to 3, wherein the transmitting electrode main line portion and the receiving electrode main wire portion each have a waveform.
The first heat generating portion and the second heat generating portion have a wave-shaped mountain portion (21M) protruding in a direction intersecting the one direction and a wave shape protruding in a direction opposite to the direction intersecting the one direction, respectively. The valley portion (21V) of the second heating portion and the peak portion of the second heating portion and the peak portion of the first heat generating portion face each other, and the valley of the second heat generating portion of the other. At least one of the portion and the valley portion of the first heat generating portion face each other.
The detection unit is located between the peak portion of one of the second heat generation portions and the peak portion of the first heat generation portion, and of the valley portion and the first heat generation portion of the second heat generation portion of the other. The heater device according to any one of claims 1 to 4, which is arranged between the valley portion.
The first heat generating portion and the second heat generating portion have a wave-shaped mountain portion (21M) protruding in a direction intersecting the one direction and a wave shape protruding in a direction opposite to the direction intersecting the one direction, respectively. The valley portion (21V) of the above, and the peak portion of one of the second heat generation portions and the valley portion of the first heat generation portion face each other, and the valley of the second heat generation portion of the other. At least one of the portion and the mountain portion of the first heat generating portion face each other.
The detection unit is located between the peak portion of one of the second heat generation portions and the valley portion of the first heat generation portion, and the valley portion of the second heat generation portion and the first heat generation portion of the other. The heater device according to any one of claims 1 to 4, which is arranged between the mountain portion and the mountain portion.
The plurality of detection units include a transmitting electrode (23) and a receiving electrode (24) that form an electric field for detecting the proximity or contact of the object.
The receiving electrode is arranged between one of the second heat-generating parts and the first heat-generating part, and between the other of the second heat-generating parts and the first heat-generating part, and the first heat-generating part and the first heat-generating part. It has a receiving electrode main wire portion (241) extending along the second heat generating portion, and has a receiving electrode main wire portion (241).
The transmitting electrode sandwiches the receiving electrode main wire portion between one of the second heat generating portions and the first heat generating portion and between the other of the second heat generating portions and the first heat generating portion. The heater device according to any one of claims 1 to 3, which is arranged and has a transmission electrode main wire portion (231) extending along the first heat generating portion and the second heat generating portion.
The transmitting electrode has a transmitting electrode branch line portion (232) extending from the transmitting electrode main line portion in a direction intersecting the transmitting electrode main line portion.
The heater device according to claim 4 or 7, wherein the receiving electrode has a receiving electrode branch line portion (242) extending from the receiving electrode main line portion in a direction intersecting the receiving electrode main line portion.