JP7654955B2

JP7654955B2 - Heater Device

Info

Publication number: JP7654955B2
Application number: JP2020180821A
Authority: JP
Inventors: 祐介田中; 祐哉鈴木; 卓也井頭
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2020-04-17
Filing date: 2020-10-28
Publication date: 2025-04-02
Anticipated expiration: 2040-10-28
Also published as: JP2021174763A

Description

本発明は、ヒータ装置に関するものである。 The present invention relates to a heater device.

従来、特許文献１に記載のされたヒータ装置がある。この装置は、絶縁基板の一面側に配置され通電により発熱する発熱部と、絶縁基板の一面側に配置され電界を形成する発信電極および受信電極と、これらの各電極により形成された電界の変化に基づいて物体の接触または近接を検出する検出回路と、を備えている。そして、検出回路により物体の接触または近接が検出されると発熱部への通電量を通常状態より低くするか又は通電を停止する。 A conventional heater device is described in Patent Document 1. This device is equipped with a heat generating section that is disposed on one side of an insulating substrate and generates heat when electricity is applied, a transmitting electrode and a receiving electrode that are disposed on one side of the insulating substrate and form an electric field, and a detection circuit that detects contact with or proximity to an object based on changes in the electric field formed by these electrodes. When the detection circuit detects contact with or proximity to an object, it reduces the amount of electricity applied to the heat generating section below the normal state or stops the electricity application.

特開２０１９－１８４１７１号公報JP 2019-184171 A

上記特許文献１に記載された装置は、発信電極および受信電極が、発熱部の熱を受けて面方向に拡散させることで、面温度分布を向上している。しかし、この装置は、発熱部、発信電極および受信電極の各配線の密度差が大きいため、温度分布にムラが生じるといった問題がある。 In the device described in Patent Document 1, the transmitting electrode and receiving electrode receive heat from the heat generating part and diffuse it in the surface direction, improving the surface temperature distribution. However, this device has a problem in that there is a large difference in the density of the wiring of the heat generating part, transmitting electrode, and receiving electrode, which causes unevenness in the temperature distribution.

本発明は上記点に鑑みたもので、温度分布のさらなる均一化を図ることを目的とする。 The present invention was developed in consideration of the above points, and aims to achieve a more uniform temperature distribution.

上記目的を達成するため、請求項１に記載の発明は、絶縁基板（２５）の一面に線形状に形成され、通電により発熱する発熱部（２１）と、発熱部の熱を放熱するとともに物体の近接または接触を検出する複数の検知部（２７）と、を備え、発熱部は、第１発熱部（２１Ａ）と、第１発熱部を挟むように配置された第２発熱部（２１Ｂ）と、を有し、複数の検知部は、第２発熱部の一方と第１発熱部との間に配置された複数の第１検知部（２７Ａ）と、第２発熱部の他方と第１発熱部との間に配置された複数の第２検知部（２７Ｂ）と、を有し、絶縁基板の一面の一方向に複数の第１検知部（２７Ａ）を所定間隔毎に配置した第１列と、第１列の複数の検知部に対し、複数の第２検知部（２７Ｂ）を一方向にずらして所定間隔毎に配置した第２列とが、一方向と交差する方向に交互に配置されている。 In order to achieve the above object, the invention described in claim 1 comprises a heat generating portion (21) formed in a linear shape on one surface of an insulating substrate (25) and generating heat when current is applied, and a plurality of detection portions (27) that dissipate heat from the heat generating portion and detect the proximity or contact of an object. The heat generating portion has a first heat generating portion (21A) and a second heat generating portion (21B) arranged to sandwich the first heat generating portion. The plurality of detection portions have a plurality of first detection portions (27A) arranged between one side of the second heat generating portion and the first heat generating portion, and a plurality of second detection portions (27B) arranged between the other side of the second heat generating portion and the first heat generating portion. A first row in which a plurality of first detection portions (27A) are arranged at a predetermined interval in one direction on one surface of the insulating substrate, and a second row in which a plurality of second detection portions (27B) are arranged at a predetermined interval with a shift in one direction from the plurality of detection portions in the first row are arranged alternately in a direction intersecting the one direction.

このような構成によれば、発熱部の熱を放熱する第１検知部および第２検知部が均一に配置されるので、温度分布のさらなる均一化を図ることができる。 With this configuration, the first and second detectors that dissipate heat from the heat generating section are evenly positioned, making it possible to achieve a more uniform temperature distribution.

なお、各構成要素等に付された括弧付きの参照符号は、その構成要素等と後述する実施形態に記載の具体的な構成要素等との対応関係の一例を示すものである。 The reference symbols in parentheses attached to each component indicate an example of the correspondence between the component and the specific components described in the embodiments described below.

第１実施形態に係るヒータ装置の取り付け位置を示した図である。FIG. 2 is a diagram showing an installation position of a heater device according to the first embodiment. 第１実施形態に係るヒータ装置の外観図である。1 is an external view of a heater device according to a first embodiment; 第１実施形態に係るヒータ装置の正面図であって、カバー部材を透過した図である。FIG. 2 is a front view of the heater device according to the first embodiment, showing a cover member in perspective; 図３中のIV－IV断面図である。4 is a cross-sectional view taken along line IV-IV in FIG. （ａ）は、複数の第１検知部と複数の第２検知部を格子状に配置した比較例の温度分布を示した図であり、（ｂ）は、複数の第１検知部と複数の第２検知部を千鳥配置した場合の温度分布を示した図である。1A is a diagram showing the temperature distribution in a comparative example in which a plurality of first detection units and a plurality of second detection units are arranged in a lattice pattern, and FIG. 1B is a diagram showing the temperature distribution when a plurality of first detection units and a plurality of second detection units are arranged in a staggered pattern. 第２実施形態に係るヒータ装置の正面図の部分拡大図であって、カバー部材を透過した図である。FIG. 11 is a partially enlarged front view of a heater device according to a second embodiment, showing a cover member in perspective; 第３実施形態に係るヒータ装置の正面図の部分拡大図であって、カバー部材を透過した図である。FIG. 11 is a partially enlarged front view of a heater device according to a third embodiment, the view being seen through a cover member. 第４実施形態に係るヒータ装置の正面図であって、カバー部材を透過した図である。FIG. 13 is a front view of a heater device according to a fourth embodiment, seen through a cover member.

以下、本発明の実施形態について図面を参照しつつ説明する。なお、以下の各実施形態相互において、互いに同一もしくは均等である部分には、同一符号を付し、その説明を省略する。 Embodiments of the present invention will be described below with reference to the drawings. Note that in the following embodiments, parts that are identical or equivalent to each other will be given the same reference numerals and their description will be omitted.

（第１実施形態）
第１実施形態に係るヒータ装置について図１～図５を用いて説明する。図１に示すように、ヒータ装置２０は、道路走行車両などの移動体の室内に設置されている。ヒータ装置２０は、室内のための暖房装置の一部を構成している。ヒータ装置２０は、移動体に搭載された電池、発電機などの電源から給電されて発熱する電気的なヒータである。ヒータ装置２０は、薄い板状に形成されている。ヒータ装置２０は、電力が供給されると発熱する。 First Embodiment
A heater device according to a first embodiment will be described with reference to Figs. 1 to 5. As shown in Fig. 1, a heater device 20 is installed in the interior of a mobile object such as a road vehicle. The heater device 20 constitutes a part of a heating device for the interior of the vehicle. The heater device 20 is an electric heater that generates heat when powered from a power source such as a battery or generator mounted on the mobile object. The heater device 20 is formed in a thin plate shape. The heater device 20 generates heat when power is supplied.

図２に示すように、ヒータ装置２０は、その表面と垂直な方向に位置付けられた対象物を暖めるために、主としてその表面と垂直な方向へ向けて輻射熱Ｈを放射する発熱面２４ａを有する面状ヒータと呼ぶことができる。 As shown in FIG. 2, the heater device 20 can be called a planar heater having a heat generating surface 24a that radiates radiant heat H primarily in a direction perpendicular to its surface in order to heat an object positioned in a direction perpendicular to its surface.

室内には、乗員１２が着座するための座席１１が設置されている。ヒータ装置２０は、乗員１２の足元に輻射熱Ｈを放射するように室内に設置されている。ヒータ装置２０は、たとえば他の暖房装置の起動直後において、乗員１２に対して即効的に暖かさを提供するための装置として利用することができる。ヒータ装置２０は、室内の壁面に設置される。 A seat 11 for a passenger 12 to sit on is installed inside the vehicle. The heater device 20 is installed inside the vehicle so as to radiate radiant heat H to the feet of the passenger 12. The heater device 20 can be used as a device for providing immediate warmth to the passenger 12, for example, immediately after starting up another heating device. The heater device 20 is installed on a wall surface inside the vehicle.

ヒータ装置２０は、想定される通常の姿勢の乗員１２に対向するように設置される。道路走行車両は、ハンドル１３を支持するためのステアリングコラム１４を有している。ヒータ装置２０は、ステアリングコラム１４の下面と、インパネカバー１５の下面に、それぞれ乗員１２に対向するように設置されている。 The heater device 20 is installed so as to face the occupant 12 in an assumed normal posture. The road vehicle has a steering column 14 for supporting a steering wheel 13. The heater device 20 is installed on the underside of the steering column 14 and on the underside of the instrument panel cover 15 so as to face the occupant 12.

次に、ヒータ装置２０の構成について説明する。図３～図４に示すように、ヒータ装置２０は、発熱部２１、発信電極２３、受信電極２４、絶縁基板２５およびカバー部材２６を備えている。 Next, the configuration of the heater device 20 will be described. As shown in Figures 3 and 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.

絶縁基板２５は、軸Ｘと軸Ｙによって規定されるＸ－Ｙ平面に沿って広がる板状部材によって構成されている。絶縁基板２５は、軸Ｚの方向に厚さをもつ。絶縁基板２５は、ほぼ四角形の薄い板状に形成されている。絶縁基板２５は、高い絶縁性を有し、かつ、高温に耐える樹脂材料、例えば、ポリイミドフィルムによって構成されている。絶縁基板２５における乗員側の面に、発熱部２１、発信電極２３、受信電極２４およびカバー部材２６が形成されている。 The insulating substrate 25 is composed of a plate-like member extending along the X-Y plane defined by the X-axis and the Y-axis. The insulating substrate 25 has a thickness in the direction of the Z-axis. The insulating substrate 25 is formed in a thin, substantially rectangular plate shape. The insulating substrate 25 is composed of a resin material that has high insulating properties and can withstand high temperatures, such as a polyimide film. The heating portion 21, the transmitting electrode 23, the receiving electrode 24, and the cover member 26 are formed on the surface of the insulating substrate 25 facing the occupant.

発熱部２１は、線状を成しており、絶縁基板２５の一面に蛇行するように形成されている。すなわち、絶縁基板２５の一面に、線形状を成す発熱部２１が大きく蛇行するように形成されている。 The heat generating portion 21 is linear and formed in a meandering manner on one surface of the insulating substrate 25. In other words, the heat generating portion 21 is linear and formed in a large meandering manner on one surface of the insulating substrate 25.

このように、発熱部２１は大きく蛇行するように形成されているので、温度分布を均一化することができる。 In this way, the heat generating portion 21 is formed in a large meandering shape, which allows for a uniform temperature distribution.

また、発熱部２１は線形状を成しているので、乗員の指などが接触した際、その指へ流入する熱移動が抑制される。これにより、接触した部位の温度を急速に低下させることができ、乗員の熱的不快感を抑制することができる。 In addition, because the heat generating portion 21 has a linear shape, when an occupant's finger or the like comes into contact with it, the transfer of heat to the finger is suppressed. This makes it possible to rapidly lower the temperature of the contact area, thereby suppressing thermal discomfort felt by the occupant.

発熱部２１は、第１発熱部２１Ａ、第２発熱部２１Ｂおよび第３発熱部２１Ｃを有している。図３に示すように、第１発熱部２１Ａ、第２発熱部２１Ｂおよび第３発熱部２１Ｃが１本の線となるよう接続されている。なお、第２発熱部２１Ｂは、第１発熱部２１Ａを挟むように配置されているとみなすことができる。 The heat generating portion 21 has a first heat generating portion 21A, a second heat generating portion 21B, and a third heat generating portion 21C. As shown in FIG. 3, the first heat generating portion 21A, the second heat generating portion 21B, and the third heat generating portion 21C are connected to form a single line. The second heat generating portion 21B can be considered to be disposed so as to sandwich the first heat generating portion 21A.

発熱部２１は、導電性を有する部材によって作られている。具体的には、発熱部２１は、銅、銅とスズとの合金（Ｃｕ－Ｓｎ）、銀、スズ、ステンレス鋼、ニッケル、ニクロムなどの金属およびこれらを含む合金を用いて構成することができる。 The heat generating portion 21 is made of a conductive material. Specifically, the heat generating portion 21 can be made of metals such as copper, an alloy of copper and tin (Cu-Sn), silver, tin, stainless steel, nickel, and nichrome, as well as alloys containing these metals.

発熱部２１の両端には、それぞれ接続端子２８が形成されている。各接続端子２８は、不図示の制御部に接続されている。 A connection terminal 28 is formed on each end of the heat generating portion 21. Each connection terminal 28 is connected to a control unit (not shown).

発信電極２３および受信電極２４は、導電性金属材料によって形成されており、隣り合う発熱部２１の間に形成されている。 The transmitting electrode 23 and the receiving electrode 24 are made of a conductive metal material and are formed between adjacent heating elements 21.

発熱部２１、発信電極２３および受信電極２４は、絶縁基板２５およびカバー部材２６よりも高い熱伝導率を有する材料で形成されている。発信電極２３および受信電極２４は、発熱部２１が発熱した熱を面方向へ拡散させる機能を有している。 The heat generating portion 21, the transmitting electrode 23, and the receiving electrode 24 are formed 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 the function of diffusing the heat generated by the heat generating portion 21 in the planar direction.

発信電極２３は、直線状を成す発信電極主線部２３１と、発信電極主線部２３１から分岐して受信電極２４側に延びる発信電極枝線部２３２と、を有している。本実施形態の発信電極枝線部２３２は、発信電極主線部２３１と直交する方向に延びるように形成されている。発信電極主線部２３１は、隣り合う一方の発熱部２１に沿うように延びている。発信電極２３には接続端子２９１が接続されている。 The transmitting electrode 23 has a linear transmitting electrode main line portion 231 and a transmitting electrode branch line portion 232 that branches off from the transmitting electrode main line portion 231 and extends toward the receiving electrode 24. In this embodiment, the transmitting electrode branch line portion 232 is formed to extend in a direction perpendicular to the transmitting electrode main line portion 231. The transmitting electrode main line portion 231 extends along one of the adjacent heat generating portions 21. A connection terminal 291 is connected to the transmitting electrode 23.

受信電極２４は、直線状を成す受信電極主線部２４１と、受信電極主線部２４１から分岐して発信電極２３側に延びる受信電極枝線部２４２と、を有している。本実施形態の受信電極枝線部２４２は、受信電極主線部２４１と直交する方向に延びるように形成されている。受信電極主線部２４１は、隣り合う他方の発熱部２１に沿うように延びている。受信電極２４には、接続端子２９２が接続されている。 The receiving electrode 24 has a linear receiving electrode main line portion 241 and a receiving electrode branch line portion 242 that branches off from the receiving electrode main line portion 241 and extends toward the transmitting electrode 23. In this embodiment, the receiving electrode branch line portion 242 is formed to extend in a direction perpendicular 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.

また、上記した接続端子２８、接続端子２９１および接続端子２９２には、不図示の制御装置が接続されている。 In addition, a control device (not shown) is connected to the above-mentioned connection terminals 28, 291, and 292.

また、発信電極２３の２つの発信電極枝線部２３２が受信電極２４の１つの受信電極枝線部２４２を挟むように形成されている。 In addition, the two transmitting electrode branch wires 232 of the transmitting electrode 23 are formed to sandwich one receiving electrode branch wire 242 of the receiving electrode 24.

発信電極２３の発信電極主線部２３１、２つの発信電極枝線部２３２、受信電極２４の受信電極主線部２４１および１つの受信電極枝線部２４２によって検知部２７が構成されている。複数の検知部２７は、発熱部２１の熱を面方向へ拡散させて放熱するとともに物体の近接または接触を検出するための電界を形成する。 The detection unit 27 is composed of the transmitting electrode main line 231 of the transmitting electrode 23, two transmitting electrode branch lines 232, and the receiving electrode main line 241 and one receiving electrode branch line 242 of the receiving electrode 24. The multiple detection units 27 dissipate heat from the heat generating unit 21 by diffusing it in the planar direction, and also form an electric field for detecting the proximity or contact of an object.

本実施形態では、複数の検知部２７のうち、第２発熱部２１Ｂの一方と第１発熱部２１Ａとの間に配置された検知部２７を第１検知部２７Ａと呼び、第２発熱部２１Ｂの他方と第１発熱部２１Ａとの間に配置された検知部２７を第２検知部２７Ｂと呼ぶ。 In this embodiment, of the multiple detection units 27, the detection unit 27 arranged between one side of the second heat generating unit 21B and the first heat generating unit 21A is called the first detection unit 27A, and the detection unit 27 arranged between the other side of the second heat generating unit 21B and the first heat generating unit 21A is called the second detection unit 27B.

本ヒータ装置は、絶縁基板２５の一面のＸ方向に複数の第１検知部２７Ａを所定間隔毎に配置した第１列と、第１列の第１検知部２７Ａに対し、複数の第２検知部２７ＢをＸ方向にずらして所定間隔毎に配置した第２列とが、Ｘ方向と直交するＹ方向に交互に配置されている。 In this heater device, a first row in which multiple first detectors 27A are arranged at a predetermined interval in the X direction on one surface of an insulating substrate 25, and a second row in which multiple second detectors 27B are arranged at a predetermined interval and shifted in the X direction relative to the first detectors 27A in the first row, are arranged alternately in the Y direction perpendicular to the X direction.

また、複数の第２検知部２７Ｂは、複数の第１検知部２７Ａに対して、複数の第１検知部２７Ａの所定間隔の１／２間隔、Ｘ方向にずらした位置に配置されている。すなわち、複数の第２検知部２７Ｂは、複数の第１検知部２７Ａの所定間隔であるピッチの半ピッチ分、Ｘ方向にずらした位置に配置されている。このように、複数の第１検知部２７Ａと複数の第２検知部２７Ｂとが千鳥配置されている。 The second detectors 27B are arranged at positions shifted in the X direction by half the pitch, which is the predetermined interval between the first detectors 27A, relative to the first detectors 27A. In other words, the second detectors 27B are arranged at positions shifted in the X direction by half the pitch, which is the predetermined interval between the first detectors 27A. In this way, the first detectors 27A and the second detectors 27B are arranged in a staggered manner.

次に、本ヒータ装置の作動について説明する。 Next, we will explain how this heater device works.

発熱部２１の両端に配置された２つの接続端子２８間に電圧が印加されると、発熱部２１は発熱する。この発熱部２１の熱は、検知部２７に伝搬して、検知部２７で放熱される。 When a voltage is applied between the two connection terminals 28 arranged at both ends of the heat generating portion 21, the heat generating portion 21 generates heat. The heat from the heat generating portion 21 is transmitted to the detection portion 27 and dissipated by the detection portion 27.

また、接続端子２９１と接続端子２９２の間に所定電圧が印加されると、図４に示すように、発信電極２３と受信電極２４の間に電界Ｅが形成される。ここで、例えば、発信電極２３と受信電極２４の間に人体の指が近接または接触すると、電界Ｅの一部が人体の指に移り、受信電極２４で検知する電界Ｅが減少し、発信電極２３と受信電極２４の間の静電容量が変化する。 When a predetermined voltage is applied between connection terminal 291 and connection terminal 292, an electric field E is formed between transmitting electrode 23 and receiving electrode 24, as shown in FIG. 4. Here, for example, when a human finger approaches or comes into contact with transmitting electrode 23 and receiving electrode 24, part of the electric field E is transferred to the human finger, the electric field E detected by receiving electrode 24 decreases, and the electrostatic capacitance between transmitting electrode 23 and receiving electrode 24 changes.

図示しない制御装置は、発信電極２３と受信電極２４の間の静電容量の変化が閾値以上であるか否かに基づいて人体の指が近接または接触を判定する。この制御装置は、物体の接触または近接が検出されると発熱部２１への通電量を通常状態より低くするか又は通電を停止する。これにより、乗員の熱的不快感を低減することができる。 A control device (not shown) determines whether a human finger is approaching or touching the heating element 21 based on whether 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, the control device reduces the amount of electricity supplied to the heating element 21 below the normal level or stops the electricity supply. This reduces the thermal discomfort felt by the occupants.

図５（ａ）は、一方向に複数の第１検知部８０Ａを所定間隔毎に配置した第１列と、第１列の第１検知部８０Ａに対し、複数の第２検知部８０Ｂを一方向にずらすことなく所定間隔毎に一方向に配置した第２列とを、Ｙ方向に交互に配置した比較例を示している。 Figure 5 (a) shows a comparative example in which a first row in which multiple first detectors 80A are arranged at a predetermined interval in one direction and a second row in which multiple second detectors 80B are arranged at a predetermined interval in one direction without being shifted in one direction relative to the first detectors 80A in the first row are arranged alternately in the Y direction.

この比較例では、第１検知部８０Ａと第２検知部８０Ｂが密となる領域と疎となる領域が形成され、密となる領域では温度が高くなり、疎となる領域では温度が低くなる。このため、温度ムラが大きくなる。 In this comparative example, the first detection unit 80A and the second detection unit 80B are arranged in dense and sparse regions, with the temperature being higher in the dense regions and lower in the sparse regions. This results in greater temperature unevenness.

これに対し、図５（ｂ）は、複数の第１検知部２７Ａを所定間隔毎に配置した第１列と、第１列の第１検知部２７Ａに対し、複数の第２検知部２７Ｂを一方向にずらして所定間隔毎に配置した第２列とを、Ｙ方向に交互に配置した構成となっている。すなわち、図５（ｂ）は、本実施形態のヒータ装置と同様の構成をしている。 In contrast, FIG. 5(b) shows a configuration in which a first row in which multiple first detectors 27A are arranged at a predetermined interval and a second row in which multiple second detectors 27B are arranged at a predetermined interval, shifted in one direction relative to the first detectors 27A in the first row, are arranged alternately in the Y direction. In other words, FIG. 5(b) has the same configuration as the heater device of this embodiment.

本実施形態のヒータ装置では、第１列の第１検知部２７Ａと第２検知部２７Ｂが均一に配置されるため、温度分布も均一となり、温度ムラが小さくなる。 In the heater device of this embodiment, the first detectors 27A and second detectors 27B in the first row are evenly arranged, resulting in a uniform temperature distribution and reduced temperature unevenness.

以上、説明したように、本実施形態のヒータ装置は、絶縁基板２５の一面に線形状に形成され、通電により発熱する発熱部２１と、発熱部の熱を放熱するとともに物体の近接または接触を検出する複数の検知部２７と、を備えている。また、発熱部は、第１発熱部２１Ａと、第１発熱部２１Ａを挟むように配置された第２発熱部２１Ｂと、を有している。また、複数の検知部２７は、第２発熱部２１Ｂの一方と第１発熱部２１Ａとの間に配置された複数の第１検知部２７Ａと、第２発熱部２１Ｂの他方と第１発熱部２１Ａとの間に配置された複数の第２検知部２７Ｂと、を有している。そして、絶縁基板２５の一面の一方向に複数の第１検知部２７Ａを所定間隔毎に配置した第１列と、第１列の複数の検知部２７に対し、複数の第２検知部２７Ｂを一方向にずらして所定間隔毎に配置した第２列とが、一方向と交差する方向に交互に配置されている。 As described above, the heater device of this embodiment includes a heat generating portion 21 formed in a linear shape on one surface of an insulating substrate 25, which generates heat when current is applied, and a plurality of detection portions 27 that dissipate heat from the heat generating portion and detect the proximity or contact of an object. The heat generating portion includes a first heat generating portion 21A and a second heat generating portion 21B arranged to sandwich the first heat generating portion 21A. The plurality of detection portions 27 include a plurality of first detection portions 27A arranged between one side of the second heat generating portion 21B and the first heat generating portion 21A, and a plurality of second detection portions 27B arranged between the other side of the second heat generating portion 21B and the first heat generating portion 21A. A first row in which a plurality of first detection portions 27A are arranged at a predetermined interval in one direction on one surface of the insulating substrate 25, and a second row in which a plurality of second detection portions 27B are arranged at a predetermined interval with respect to the plurality of detection portions 27 in the first row, are alternately arranged in a direction intersecting the one direction.

このような構成によれば、発熱部２１の熱を放熱する第１検知部２７Ａおよび第２検知部２７Ｂが均一に配置されるので、温度分布のさらなる均一化を図ることができる。 With this configuration, the first detector 27A and the second detector 27B that dissipate heat from the heat generating portion 21 are evenly arranged, making it possible to achieve a more uniform temperature distribution.

また、複数の第２検知部２７Ｂは、複数の第１検知部２７Ａに対して、複数の第１検知部２７Ａの所定間隔の１／２間隔、一方向にずらした位置に配置されている。 The second detectors 27B are also positioned at positions offset in one direction from the first detectors 27A by half the predetermined interval between the first detectors 27A.

これにより、複数の第１検知部２７Ａと複数の第２検知部２７Ｂとが千鳥配置されるので、さらに、温度分布を均一化することができる。 As a result, multiple first detection units 27A and multiple second detection units 27B are arranged in a staggered manner, further making the temperature distribution uniform.

また、発熱部２１は、線状を成しており、絶縁基板２５の一面に蛇行するように形成されている。したがって、さらに、温度分布の均一化を図ることができる。 The heat generating portion 21 is linear and formed in a serpentine pattern on one surface of the insulating substrate 25. This makes it possible to achieve a more uniform temperature distribution.

（第２実施形態）
第２実施形態に係るヒータ装置について図６を用いて説明する。図に示すように、本実施形態のヒータ装置の発熱部２１は、曲線状を成す曲線部２１１を有している。また、発信電極２３の発信電極主線部２３１および受信電極２４の受信電極主線部２４１は、それぞれ波形を成している。 Second Embodiment
The heater device according to the second embodiment will be described with reference to Fig. 6. As shown in the figure, the heat generating portion 21 of the heater device according to this embodiment has a curved portion 211. Furthermore, 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 each have a waveform.

発熱部２１は、第１発熱部２１Ａと、第１発熱部２１Ａを挟むように配置された第２発熱部２１Ｂと、を有している。 The heat generating portion 21 has a first heat generating portion 21A and a second heat generating portion 21B arranged so as to sandwich the first heat generating portion 21A.

また、複数の検知部２７は、第２発熱部２１Ｂの一方と第１発熱部２１Ａとの間に配置された複数の第１検知部２７Ａと、第２発熱部２１Ｂの他方と第１発熱部２１Ａとの間に配置された複数の第２検知部２７Ｂと、を有している。 The multiple detection units 27 also include multiple first detection units 27A arranged between one side of the second heat generating unit 21B and the first heat generating unit 21A, and multiple second detection units 27B arranged between the other side of the second heat generating unit 21B and the first heat generating unit 21A.

また、第１発熱部２１Ａおよび第２発熱部２１Ｂは、それぞれ一方向と交差する方向に突出する波形状の山部２１Ｍと、一方向と交差する方向と反対方向に突出する波形状の谷部２１Ｖと、を有している。 In addition, the first heating portion 21A and the second heating portion 21B each have a wave-shaped peak portion 21M that protrudes in a direction intersecting with one direction, and a wave-shaped valley portion 21V that protrudes in a direction opposite to the direction intersecting with the one direction.

また、一方の第２発熱部２１Ｂの山部２１Ｍと第１発熱部２１Ａの山部２１Ｍとが対向するとともに、他方の第２発熱部２１Ｂの谷部２１Ｖと第１発熱部２１Ａの谷部２１Ｖとが対向している。 In addition, the peaks 21M of the second heat generating portion 21B on one side face the peaks 21M of the first heat generating portion 21A, and the valleys 21V of the second heat generating portion 21B on the other side face the valleys 21V of the first heat generating portion 21A.

そして、検知部２７は、一方の第２発熱部２１Ｂの山部２１Ｍと第１発熱部２１Ａの山部２１Ｍとの間、および、他方の第２発熱部２１Ｂの谷部２１Ｖと第１発熱部２１Ａの谷部２１Ｖとの間に配置されている。 The detection unit 27 is disposed between the peaks 21M of the second heat generating unit 21B on one side and the peaks 21M of the first heat generating unit 21A on the other side, and between the valleys 21V of the second heat generating unit 21B on the other side and the valleys 21V of the first heat generating unit 21A on the other side.

このように、一方の第２発熱部２１Ｂの山部２１Ｍと第１発熱部２１Ａの山部２１Ｍとの間、および、他方の第２発熱部２１Ｂの谷部２１Ｖと第１発熱部２１Ａの谷部２１Ｖとの間に検知部２７を配置することができる。 In this way, the detection unit 27 can be disposed between the peaks 21M of the second heat generating portion 21B on one side and the peaks 21M of the first heat generating portion 21A, and between the valleys 21V of the second heat generating portion 21B on the other side and the valleys 21V of the first heat generating portion 21A.

また、第１発熱部２１Ａおよび第２発熱部２１Ｂは、波形を成す曲線部２１１を有している。 In addition, the first heat generating portion 21A and the second heat generating portion 21B have a curved portion 211 that forms a wave shape.

直線形状を成す発熱部２１は、緊張状態で張られたワイヤーのようにみなすことができ、発熱部２１に外力が加わったときの強度を十分に確保できない。 The straight-line heating section 21 can be considered as a wire stretched under tension, and does not have sufficient strength when an external force is applied to the heating section 21.

これに対し、曲線状を成す曲線部２１１は、湾曲するように緩く張られたワイヤーのようにみなすことができ、直線形状を成す発熱部と比較して発熱部２１に外力が加わったときの強度をより確保することができる。 In contrast, the curved portion 211 can be considered as a wire that is loosely stretched so that it curves, and can ensure greater strength when an external force is applied to the heat generating portion 21 compared to a heat generating portion that is linear.

また、発信電極２３の発信電極主線部２３１および受信電極２４の受信電極主線部２４１は、それぞれ第２発熱部２１Ｂの一方と第１発熱部２１Ａとの間と、第２発熱部２１Ｂの他方と第１発熱部２１Ａとの間に配置されている。 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 respectively disposed between one side of the second heating portion 21B and the first heating portion 21A, and between the other side of the second heating portion 21B and the first heating portion 21A.

発信電極２３の発信電極主線部２３１および受信電極２４の受信電極主線部２４１は、それぞれ第１発熱部２１Ａおよび第２発熱部２１Ｂに沿って延びるよう形成されている。 The transmitting electrode main line portion 231 of the transmitting electrode 23 and the receiving electrode main line portion 241 of the receiving electrode 24 are formed to extend along the first heating portion 21A and the second heating portion 21B, respectively.

そして、発信電極２３の発信電極主線部２３１および受信電極２４の受信電極主線部２４１は、それぞれ波形を成している。したがって、発信電極２３の発信電極主線部２３１および受信電極２４の受信電極主線部２４１を直線状として構成した場合と比較して、発信電極２３および受信電極２４に外力が加わったときの強度をより確保することができる。 The transmitting electrode main line portion 231 of the transmitting electrode 23 and the receiving electrode main line portion 241 of the receiving electrode 24 each have a waveform. Therefore, compared to a case in which the transmitting electrode main line portion 231 of the transmitting electrode 23 and the receiving electrode main line portion 241 of the receiving electrode 24 are configured as straight lines, it is possible to ensure greater strength when an external force is applied to the transmitting electrode 23 and the receiving electrode 24.

（第３実施形態）
第３実施形態に係るヒータ装置について図７を用いて説明する。図に示すように、本実施形態のヒータ装置の発熱部２１は、曲線状を成す曲線部２１１を有している。また、発信電極２３の発信電極主線部２３１および受信電極２４の受信電極主線部２４１は、それぞれ波形を成している。 Third Embodiment
A heater device according to a third embodiment will be described with reference to Fig. 7. As shown in the figure, the heat generating portion 21 of the heater device of this embodiment has a curved portion 211. Also, 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 each have a waveform.

また、一方の第２発熱部２１Ｂの山部２１Ｍと第１発熱部２１Ａの谷部２１Ｖとが対向している。また、他方の第２発熱部２１Ｂの谷部２１Ｖと第１発熱部２１Ａの山部２１Ｍとが対向している。 The peaks 21M of the second heat generating portion 21B on one side face the valleys 21V of the first heat generating portion 21A. The valleys 21V of the second heat generating portion 21B on the other side face the peaks 21M of the first heat generating portion 21A.

そして、検知部２７は、一方の第２発熱部２１Ｂの山部２１Ｍと第１発熱部２１Ａの谷部２１Ｖとの間、および、他方の第２発熱部２１Ｂの谷部２１Ｖと第１発熱部２１Ａの山部２１Ｍとの間に配置されている。 The detection unit 27 is disposed between the peak 21M of the second heat generating unit 21B on one side and the valley 21V of the first heat generating unit 21A on the other side, and between the valley 21V of the second heat generating unit 21B on the other side and the peak 21M of the first heat generating unit 21A.

これによれば、第１発熱部２１Ａと第２発熱部２１Ｂの間の距離が最大となる箇所に形成された検知部２７から発熱部２１の熱が十分に放熱されるので、さらに、温度ムラを低減することができる。 As a result, the heat from the heat generating portion 21 is sufficiently dissipated from the detection portion 27 formed at the point where the distance between the first heat generating portion 21A and the second heat generating portion 21B is maximum, thereby further reducing temperature unevenness.

また、発信電極２３の発信電極主線部２３１および受信電極２４の受信電極主線部２４１は、それぞれ波形を成している。したがって、発信電極２３の発信電極主線部２３１および受信電極２４の受信電極主線部２４１を直線状として構成した場合と比較して、発信電極２３および受信電極２４に外力が加わったときの強度をより確保することができる。 In addition, the transmitting electrode main line portion 231 of the transmitting electrode 23 and the receiving electrode main line portion 241 of the receiving electrode 24 each have a waveform. Therefore, compared to a case in which the transmitting electrode main line portion 231 of the transmitting electrode 23 and the receiving electrode main line portion 241 of the receiving electrode 24 are configured as straight lines, it is possible to ensure greater strength when an external force is applied to the transmitting electrode 23 and the receiving electrode 24.

（第４実施形態）
第４実施形態に係るヒータ装置について図８を用いて説明する。図に示すように、本実施形態のヒータ装置の第１検知部２７Ａおよび第２検知部２７Ｂは、それぞれ受信電極２４と、この受信電極２４を挟むように配置された発信電極２３を有している。具体的には、絶縁基板２５のＹ方向において受信電極２４を挟むように発信電極２３が形成されている。 (Fourth embodiment)
A heater device according to a fourth embodiment will be described with reference to Fig. 8. As shown in the figure, a first detector 27A and a second detector 27B of the heater device of this embodiment each have a receiving electrode 24 and a transmitting electrode 23 arranged to sandwich the receiving electrode 24. Specifically, the transmitting electrode 23 is formed in the Y direction of an insulating substrate 25 so as to sandwich the receiving electrode 24.

また、第１検知部２７Ａおよび第２検知部２７Ｂは、それぞれ隣合う発熱部２１の間に挟まれるように配置されている。 The first detection unit 27A and the second detection unit 27B are also arranged so that they are sandwiched between adjacent heat generating units 21.

具体的には、発熱部２１は、第１発熱部２１Ａ、第２発熱部２１Ｂおよび第３発熱部２１Ｃを有している。第１発熱部２１Ａおよび第２発熱部２１Ｂは、Ｘ方向に延びるように形成されている。また、第１発熱部２１Ａおよび第２発熱部２１Ｂは、Ｙ方向に進むにつれて交互に配置されている。そして、第３発熱部２１Ｃは、第１発熱部２１ＡのＸ方向の一端と第２発熱部２１ＢのＸ方向の一端を接続するとともに第１発熱部２１ＡのＸ方向の他端と第２発熱部２１ＢのＸ方向の他端を接続するよう形成されている。このように、第１発熱部２１Ａ、第２発熱部２１Ｂおよび第３発熱部２１Ｃが蛇行する１本の線となるよう形成されている。そして、第１検知部２７Ａは、隣り合う第２発熱部２１Ｂと隣り合う第１発熱部２１Ａとの間に配置され、第２検知部２７Ｂは、隣り合う第２発熱部２１Ｂと隣り合う第１発熱部２１Ａとの間に配置されている。 Specifically, the heat generating portion 21 has a first heat generating portion 21A, a second heat generating portion 21B, and a third heat generating portion 21C. The first heat generating portion 21A and the second heat generating portion 21B are formed to extend in the X direction. The first heat generating portion 21A and the second heat generating portion 21B are arranged alternately as they proceed in the Y direction. The third heat generating portion 21C is formed to connect one end of the first heat generating portion 21A in the X direction to one end of the second heat generating portion 21B in the X direction, and to connect the other end of the first heat generating portion 21A in the X direction to the other end of the second heat generating portion 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 to form a single meandering line. The first detector 27A is disposed between the adjacent second heat generating portion 21B and the adjacent first heat generating portion 21A, and the second detector 27B is disposed between the adjacent second heat generating portion 21B and the adjacent first heat generating portion 21A.

受信電極２４は、第１発熱部２１Ａおよび第２発熱部２１Ｂと同一方向に延びる受信電極主線部２４１と、受信電極主線部２４１から該受信電極主線部２４１と交差する方向に延びる受信電極枝線部２４２と、を有している。本実施形態の受信電極枝線部２４２は、受信電極主線部２４１と直交する方向に延びるように形成されている。 The receiving electrode 24 has a receiving electrode main line portion 241 that extends in the same direction as the first heating portion 21A and the second heating portion 21B, and a receiving electrode branch line portion 242 that extends from the receiving electrode main line portion 241 in a direction that intersects with the receiving electrode main line portion 241. In this embodiment, the receiving electrode branch line portion 242 is formed to extend in a direction perpendicular to the receiving electrode main line portion 241.

発信電極２３は、第１発熱部２１Ａおよび第２発熱部２１Ｂと同一方向、すなわち、Ｘ方向に延びる発信電極主線部２３１と、発信電極主線部２３１から該発信電極主線部２３１と交差する方向に延びる発信電極枝線部２３２と、を有している。発信電極２３は、さらに、Ｘ方向に平行に延びる２つの発信電極主線部２３１の間を接続する発信電極接続部２３３を有している。本実施形態の発信電極枝線部２３２は、隣り合う受信電極２４側に延びるように形成されている。また、発信電極２３は、絶縁基板２５の一面にＵ字状に形成されている。発信電極２３の両端には、それぞれ接続端子２９１、２９３が形成されている。 The transmitting electrode 23 has a transmitting electrode main line portion 231 that extends in the same direction as the first heating portion 21A and the second heating portion 21B, i.e., in the X direction, and a transmitting electrode branch line portion 232 that extends from the transmitting electrode main line portion 231 in a direction intersecting the transmitting electrode main line portion 231. The transmitting electrode 23 further has a transmitting electrode connection portion 233 that connects between the two transmitting electrode main line portions 231 that extend parallel to the X direction. In this embodiment, the transmitting electrode branch line portion 232 is formed so as to extend toward the adjacent receiving electrode 24. The transmitting electrode 23 is also formed in a U-shape on one surface of the insulating substrate 25. Connection terminals 291 and 293 are formed on both ends of the transmitting electrode 23, respectively.

受信電極２４および発信電極２３は、それぞれ不図示の集積回路の信号端子に接続されている。また、発信電極２３は、この集積回路の内部で接地されている。 The receiving electrode 24 and the transmitting electrode 23 are each connected to a signal terminal of an integrated circuit (not shown). In addition, the transmitting electrode 23 is grounded inside the integrated circuit.

ところで、発明者らの検討によれば、このような発熱部２１と検知部２７を絶縁基板２５の一面に配置したヒータ装置では、検知部２７が発熱部２１から発せられるノイズの影響を受けやすいことが分かった。 However, according to the inventors' investigations, it was found that in a heater device in which the heat generating portion 21 and the detection portion 27 are arranged on one side of the insulating substrate 25, the detection portion 27 is easily affected by noise emitted from the heat generating portion 21.

そこで、本実施形態のヒータ装置は、発熱部２１と検知部２７の受信電極２４の間に、該受信電極２４を挟むように発信電極２３が配置されている。具体的には、第１発熱部２１Ａと第２発熱部２１Ｂの間にＵ字状に発信電極２３が形成され、この発信電極２３の内部に、該発信電極２３に挟まれるよう受信電極２４が形成されている。これにより、発熱部２１から発せられるノイズの影響が抑制される。 Therefore, in the heater device of this embodiment, the transmitting electrode 23 is disposed between the heat generating portion 21 and the receiving electrode 24 of the detection portion 27 so as to sandwich the receiving electrode 24. Specifically, the transmitting electrode 23 is formed in a U-shape between the first heat generating portion 21A and the second heat generating portion 21B, and the receiving electrode 24 is formed inside this transmitting electrode 23 so as to be sandwiched between the transmitting electrode 23. This suppresses the effects of noise emitted from the heat generating portion 21.

以上、説明したように、本ヒータ装置は、複数の検知部は、物体の近接または接触を検出するための電界を形成する発信電極２３および受信電極２４を備えている。また、受信電極２４は、第２発熱部２１Ｂの一方と第１発熱部２１Ａとの間と、第２発熱部２１Ｂの他方と第１発熱部２１Ａとの間に配置され、第１発熱部２１Ａおよび第２発熱部２１Ｂに沿って延びる受信電極主線部２４１を有している。また、発信電極２３は、第２発熱部２１Ｂの一方と第１発熱部２１Ａとの間と、第２発熱部２１Ｂの他方と第１発熱部２１Ａとの間に、受信電極主線部２４１を挟むように配置された発信電極主線部２３１を有している。なお、発信電極主線部２３１は、第１発熱部２１Ａおよび第２発熱部２１Ｂに沿って延びている。 As described above, the heater device includes a plurality of detection sections each having a transmitting electrode 23 and a receiving electrode 24 that form an electric field for detecting the proximity or contact of an object. The receiving electrode 24 is disposed between one side of the second heat generating section 21B and the first heat generating section 21A, and between the other side of the second heat generating section 21B and the first heat generating section 21A, and has a receiving electrode main line portion 241 that extends along the first heat generating section 21A and the second heat generating section 21B. The transmitting electrode 23 has a transmitting electrode main line portion 231 that is disposed between one side of the second heat generating section 21B and the first heat generating section 21A, and between the other side of the second heat generating section 21B and the first heat generating section 21A, so as to sandwich the receiving electrode main line portion 241. The transmitting electrode main line portion 231 extends along the first heat generating section 21A and the second heat generating section 21B.

上記した構成によれば、発信電極２３は、第２発熱部２１Ｂの一方と第１発熱部２１Ａとの間と、第２発熱部２１Ｂの他方と第１発熱部２１Ａとの間に、受信電極主線部２４１を挟むように配置された発信電極主線部２３１を有している。そして、発信電極主線部２３１は、第１発熱部２１Ａおよび第２発熱部２１Ｂに沿って延びている。したがって、第１発熱部２１Ａ、第２発熱部２１Ｂの一方あるいは他方から発せられる受信電極２４へのノイズの影響を抑制することができる。 According to the above-mentioned configuration, the transmitting electrode 23 has a transmitting electrode main wire portion 231 arranged between one side of the second heating portion 21B and the first heating portion 21A, and between the other side of the second heating portion 21B and the first heating portion 21A, so as to sandwich the receiving electrode main wire portion 241. The transmitting electrode main wire portion 231 extends along the first heating portion 21A and the second heating portion 21B. Therefore, the influence of noise emitted from one or the other of the first heating portion 21A and the second heating portion 21B on the receiving electrode 24 can be suppressed.

また、発信電極２３は、発信電極主線部２３１から該発信電極主線部２３１と交差する方向に延びる発信電極枝線部２３２を有してる。また、受信電極２４は、受信電極主線部２４１から該受信電極主線部２４１と交差する方向に延びる受信電極枝線部２４２を有している。 The transmitting electrode 23 has a transmitting electrode branch line portion 232 that extends from the transmitting electrode main line portion 231 in a direction intersecting with the transmitting electrode main line portion 231. The receiving electrode 24 has a receiving electrode branch line portion 242 that extends from the receiving electrode main line portion 241 in a direction intersecting with the receiving electrode main line portion 241.

このように、発信電極主線部２３１から該発信電極主線部２３１と交差する方向に延びる発信電極枝線部２３２を有するように発信電極２３を構成することができる。さらに、受信電極主線部２４１から該受信電極主線部２４１と交差する方向に延びる受信電極枝線部２４２を有するように受信電極２４を構成することもできる。 In this way, the transmitting electrode 23 can be configured to have a transmitting electrode branch line portion 232 that extends from the transmitting electrode main line portion 231 in a direction intersecting with the transmitting electrode main line portion 231. Furthermore, the receiving electrode 24 can be configured to have a receiving electrode branch line portion 242 that extends from the receiving electrode main line portion 241 in a direction intersecting with the receiving electrode main line portion 241.

（他の実施形態）
（１）上記各実施形態では、発信電極２３の発信電極主線部２３１、２つの発信電極枝線部２３２、受信電極２４の受信電極主線部２４１および１つの受信電極枝線部２４２によって検知部２７を構成した。しかし、検知部２７の構成は、このような構成に限定されるものではない。 Other Embodiments
(1) In each of the above embodiments, the detection unit 27 is configured by the transmitting electrode main line portion 231 of the transmitting electrode 23, the two transmitting electrode branch lines 232, and the receiving electrode main line portion 241 and one receiving electrode branch line 242 of the receiving electrode 24. However, the configuration of the detection unit 27 is not limited to this configuration.

（２）上記各実施形態では、複数の第２検知部２７Ｂを、複数の第１検知部２７Ａに対して、複数の第１検知部２７Ａの所定間隔の１／２間隔、一方向にずらした位置に配置した。 (2) In each of the above embodiments, the multiple second detectors 27B are positioned at positions offset in one direction from the multiple first detectors 27A by half the predetermined interval between the multiple first detectors 27A.

しかし、複数の第２検知部２７Ｂを、複数の第１検知部２７Ａに対して、複数の第１検知部２７Ａをずらす長さは、第１検知部２７Ａの所定間隔の１／２でなくてもよい。 However, the length by which the multiple second detection units 27B are shifted relative to the multiple first detection units 27A does not have to be 1/2 the specified spacing of the first detection units 27A.

（３）上記各実施形態では、一方向に複数の第１検知部２７Ａを所定間隔毎に配置した第１列と、第１列の複数の検知部２７に対し、複数の第２検知部２７Ｂを一方向にずらして所定間隔毎に配置した第２列とを、一方向と直交する方向に交互に配置するようにした。しかし、第１列と第２列を交互に配置する方向は、一方向と直交する方向でなくてもよい。 (3) In each of the above embodiments, a first row in which a plurality of first detectors 27A are arranged at a predetermined interval in one direction, and a second row in which a plurality of second detectors 27B are arranged at a predetermined interval in one direction, shifted from the plurality of detectors 27 in the first row, are arranged alternately in a direction perpendicular to the one direction. However, the direction in which the first row and the second row are arranged alternately does not have to be a direction perpendicular to the one direction.

なお、本発明は上記した実施形態に限定されるものではなく、特許請求の範囲に記載した範囲内において適宜変更が可能である。また、上記各実施形態は、互いに無関係なものではなく、組み合わせが明らかに不可な場合を除き、適宜組み合わせが可能である。また、上記各実施形態において、実施形態を構成する要素は、特に必須であると明示した場合および原理的に明らかに必須であると考えられる場合等を除き、必ずしも必須のものではないことは言うまでもない。また、上記各実施形態において、実施形態の構成要素の個数、数値、量、範囲等の数値が言及されている場合、特に必須であると明示した場合および原理的に明らかに特定の数に限定される場合等を除き、その特定の数に限定されるものではない。また、上記各実施形態において、構成要素等の材質、形状、位置関係等に言及するときは、特に明示した場合および原理的に特定の材質、形状、位置関係等に限定される場合等を除き、その材質、形状、位置関係等に限定されるものではない。 The present invention is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the claims. The above-described embodiments are not unrelated to each other, and can be combined as appropriate, except when the combination is clearly impossible. In the above-described embodiments, the elements constituting the embodiments are not necessarily essential, except when they are specifically stated to be essential or when they are clearly considered to be essential in principle. In the above-described embodiments, when the numbers, values, amounts, ranges, etc. of the components of the embodiments are mentioned, they are not limited to the specific numbers, except when they are specifically stated to be essential or when they are clearly limited to a specific number in principle. In the above-described embodiments, when the materials, shapes, positional relationships, etc. of the components are mentioned, they are not limited to the materials, shapes, positional relationships, etc., except when they are specifically stated to be essential or when they are clearly limited to a specific material, shape, positional relationship, etc. in principle.

（まとめ）
上記各実施形態の一部または全部で示された第１の観点によれば、ヒータ装置は、絶縁基板の一面に線形状に形成され、通電により発熱する発熱部と、発熱部の熱を放熱するとともに物体の近接または接触を検出する複数の検知部と、を備えている。また、発熱部は、第１発熱部と、第１発熱部を挟むように配置された第２発熱部と、を有している。また、複数の検知部は、第２発熱部の一方と第１発熱部との間に配置された複数の第１検知部と、第２発熱部の他方と第１発熱部との間に配置された複数の第２検知部と、を有している。そして、絶縁基板の一面の一方向に複数の第１検知部を所定間隔毎に配置した第１列と、第１列の複数の検知部に対し、複数の第２検知部を一方向にずらして所定間隔毎に配置した第２列とが、一方向と交差する方向に交互に配置されている。 (summary)
According to a first aspect shown in some or all of the above embodiments, the heater device includes a heat generating portion formed in a linear shape on one surface of an insulating substrate, which generates heat when current is applied, and a plurality of detection portions which dissipate heat from the heat generating portion and detect the proximity or contact of an object. The heat generating portion includes a first heat generating portion and a second heat generating portion arranged to sandwich the first heat generating portion. The plurality of detection portions include a plurality of first detection portions arranged between one side of the second heat generating portion and the first heat generating portion, and a plurality of second detection portions arranged between the other side of the second heat generating portion and the first heat generating portion. A first row in which a plurality of first detection portions are arranged at a predetermined interval in one direction on one surface of the insulating substrate, and a second row in which a plurality of second detection portions are arranged at a predetermined interval with a shift in one direction from the plurality of detection portions in the first row, are alternately arranged in a direction intersecting the one direction.

また、第２の観点によれば、複数の第２検知部は、複数の第１検知部に対して、複数の第１検知部の所定間隔の１／２間隔、一方向にずらした位置に配置されている。 Furthermore, according to the second aspect, the multiple second detection units are arranged at positions shifted in one direction from the multiple first detection units by half the predetermined interval between the multiple first detection units.

これにより、複数の第１検知部と複数の第２検知部とが千鳥配置されるので、さらに、温度分布を均一化することができる。 This allows multiple first detectors and multiple second detectors to be arranged in a staggered pattern, further improving the uniformity of the temperature distribution.

また、第３の観点によれば、第１発熱部および第２発熱部は、波形を成す曲線部を有している。 Furthermore, according to a third aspect, the first heat generating portion and the second heat generating portion have a curved portion that forms a wave shape.

曲線状を成す曲線部は、湾曲するように緩く張られたワイヤーのようにみなすことができ、直線形状を成す発熱部と比較して発熱部に外力が加わったときの強度をより確保することができる。 The curved portion can be thought of as a wire that is loosely stretched so that it curves, and compared to a straight-line heating portion, it is possible to ensure greater strength when an external force is applied to the heating portion.

また、第４の観点によれば、ヒータ装置は、物体の近接または接触を検出するための電界を形成する発信電極および受信電極を備えている。また、発信電極は、第２発熱部の一方と第１発熱部との間と、第２発熱部の他方と第１発熱部との間に配置され、第１発熱部および第２発熱部に沿って延びる主線部を有している。また、受信電極は、第２発熱部の一方と第１発熱部との間と、第２発熱部の他方と第１発熱部との間に配置され、第１発熱部および第２発熱部に沿って延びる主線部を有している。そして、発信電極の主線部および受信電極の主線部は、それぞれ波形を成している。 According to a 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. The transmitting electrode is disposed between one side of the second heating portion and the first heating portion, and between the other side of the second heating portion and the first heating portion, and has a main line portion that extends along the first heating portion and the second heating portion. The receiving electrode is disposed between one side of the second heating portion and the first heating portion, and between the other side of the second heating portion and the first heating portion, and has a main line portion that extends along the first heating portion and the second heating portion. The main line portion of the transmitting electrode and the main line portion of the receiving electrode each form a waveform.

したがって、発信電極の主線部および受信電極の主線部を直線状として構成した場合と比較して、発信電極および受信電極に外力が加わったときの強度をより確保することができる。 Therefore, compared to when the main wire portion of the transmitting electrode and the main wire portion of the receiving electrode are configured as straight lines, it is possible to ensure greater strength when an external force is applied to the transmitting electrode and the receiving electrode.

また、第５の観点によれば、第１発熱部および第２発熱部は、それぞれ一方向と交差する方向に突出する波形状の山部と、一方向と交差する方向と反対方向に突出する波形状の谷部と、を有している。 Furthermore, according to a fifth aspect, the first heating section and the second heating section each have a wave-shaped peak portion that protrudes in a direction intersecting with one direction, and a wave-shaped valley portion that protrudes in a direction opposite to the direction intersecting with the one direction.

また、一方の第２発熱部の山部と第１発熱部の山部とが対向することと、他方の第２発熱部の谷部と第１発熱部の谷部とが対向することの少なくとも一方となっている。 In addition, at least one of the peaks of the second heat generating portion and the peaks of the first heat generating portion face each other, and the valleys of the second heat generating portion and the valleys of the first heat generating portion face each other.

そして、検知部は、一方の第２発熱部の山部と第１発熱部の山部との間、および、他方の第２発熱部の谷部と第１発熱部の谷部との間に配置されている。 The detection unit is disposed between the peaks of the second heat generating unit on one side and the peaks of the first heat generating unit on the other side, and between the valleys of the second heat generating unit on the other side and the valleys of the first heat generating unit on the other side.

このように、一方の第２発熱部の山部と第１発熱部の山部との間、および、他方の第２発熱部の谷部と第１発熱部の谷部との間に検知部を配置することができる。 In this way, the detection unit can be disposed between the peaks of the second heat generating unit on one side and the peaks of the first heat generating unit on the other side, and between the valleys of the second heat generating unit on the other side and the valleys of the first heat generating unit.

また、第６の観点によれば、第１発熱部および第２発熱部は、それぞれ一方向と交差する方向に突出する波形状の山部と、一方向と交差する方向と反対方向に突出する波形状の谷部と、を有している。 Furthermore, according to a sixth aspect, the first heating section and the second heating section each have a wave-shaped peak portion that protrudes in a direction intersecting with one direction, and a wave-shaped valley portion that protrudes in a direction opposite to the direction intersecting with the one direction.

また、一方の第２発熱部の山部と第１発熱部の谷部とが対向することと、他方の第２発熱部の谷部と第１発熱部の山部とが対向することの少なくとも一方となっている。 In addition, at least one of the peaks of the second heat generating portion and the valleys of the first heat generating portion face each other, and the valleys of the second heat generating portion and the peaks of the first heat generating portion face each other.

そして、検知部は、一方の第２発熱部の山部と第１発熱部の谷部との間、および、他方の第２発熱部の谷部と第１発熱部の山部との間に配置されている。 The detection unit is disposed between the peaks of the second heat generating unit on one side and the valleys of the first heat generating unit on the other side, and between the valleys of the second heat generating unit on the other side and the peaks of the first heat generating unit on the other side.

これによれば、第１発熱部と第２発熱部の間の距離が最大となる箇所に形成された検知部から発熱部の熱が十分に放熱されるので、さらに、温度ムラを低減することができる。 This allows the heat from the heat generating section to be sufficiently dissipated from the detection section formed at the point where the distance between the first heat generating section and the second heat generating section is maximum, further reducing temperature unevenness.

また、第７の観点によれば、複数の検知部は、物体の近接または接触を検出するための電界を形成する発信電極および受信電極を備えている。また、受信電極は、第２発熱部の一方と第１発熱部との間と、第２発熱部の他方と第１発熱部との間に配置され、第１発熱部および第２発熱部に沿って延びる受信電極主線部を有している。そして、発信電極は、第２発熱部の一方と第１発熱部との間と、第２発熱部の他方と第１発熱部との間に、受信電極主線部を挟むように配置されるとともに第１発熱部および第２発熱部に沿って延びる発信電極主線部を有している。 According to a seventh aspect, the multiple detection units include a transmitting electrode and a receiving electrode that form an electric field for detecting the proximity or contact of an object. The receiving electrode is disposed between one side of the second heat generating unit and the first heat generating unit, and between the other side of the second heat generating unit and the first heat generating unit, and has a receiving electrode main line portion that extends along the first heat generating unit and the second heat generating unit. The transmitting electrode is disposed between one side of the second heat generating unit and the first heat generating unit, and between the other side of the second heat generating unit and the first heat generating unit, so as to sandwich the receiving electrode main line portion, and has a transmitting electrode main line portion that extends along the first heat generating unit and the second heat generating unit.

これによれば、発信電極は、第２発熱部の一方と第１発熱部との間と、第２発熱部の他方と第１発熱部との間に、受信電極主線部を挟むように配置された発信電極主線部を有している。そして、発信電極主線部は、第１発熱部および第２発熱部に沿って延びている。したがって、第１発熱部、第２発熱部の一方あるいは他方から発せられる受信電極へのノイズの影響を抑制することができる。 According to this, the transmitting electrode has a transmitting electrode main line portion arranged between one side of the second heating portion and the first heating portion, and between the other side of the second heating portion and the first heating portion, so as to sandwich the receiving electrode main line portion. The transmitting electrode main line portion extends along the first heating portion and the second heating portion. Therefore, the influence of noise emitted from one or the other of the first heating portion and the second heating portion on the receiving electrode can be suppressed.

また、第８の観点によれば、発信電極は、前記発信電極主線部から該発信電極主線部と交差する方向に延びる発信電極枝線部を有している。また、受信電極は、前記受信電極主線部から該受信電極主線部と交差する方向に延びる受信電極枝線部を有している。 According to an eighth aspect, the transmitting electrode has a transmitting electrode branch line portion extending from the transmitting electrode main line portion in a direction intersecting with the transmitting electrode main line portion. The receiving electrode has a receiving electrode branch line portion extending from the receiving electrode main line portion in a direction intersecting with the receiving electrode main line portion.

このように、発信電極主線部から該発信電極主線部と交差する方向に延びる発信電極枝線部を有するように発信電極を構成することができる。さらに、受信電極主線部から該受信電極主線部と交差する方向に延びる受信電極枝線部を有するように受信電極を構成することもできる。 In this way, the transmitting electrode can be configured to have a transmitting electrode branch line portion that extends from the transmitting electrode main line portion in a direction that intersects with the transmitting electrode main line portion. Furthermore, the receiving electrode can be configured to have a receiving electrode branch line portion that extends from the receiving electrode main line portion in a direction that intersects with the receiving electrode main line portion.

２０ヒータ装置
２１発熱部
２１Ａ第１発熱部
２１Ｂ第２発熱部
２１Ｍ山部
２１Ｖ谷部
２３発信電極
２４受信電極
２５絶縁基板
２６カバー部材
２７検知部
２７Ａ第１検知部
２７Ｂ第２検知部
２１１曲線部 20 heater device 21 heat generating portion 21A first heat generating portion 21B second heat generating portion 21M peak portion 21V valley portion 23 transmitting electrode 24 receiving electrode 25 insulating substrate 26 cover member 27 detecting portion 27A first detecting portion 27B second detecting portion 211 curved portion

Claims

A heat generating portion (21) formed in a linear shape on one surface of an insulating substrate (25) and generating heat when electricity is applied thereto;
a plurality of detection units (27) that dissipate heat from the heat generating unit and detect the proximity or contact of an object;
The heat generating portion has 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 sections include the plurality of first detection sections (27A) arranged between one of the second heat generating sections and the first heat generating section, and a plurality of second detection sections (27B) arranged between the other of the second heat generating sections and the first heat generating section,
A heater device in which a first row in which the multiple first detection portions (27A) are arranged at a predetermined interval in one direction on one surface of the insulating substrate, and a second row in which the multiple second detection portions (27B) are arranged at a predetermined interval offset in the one direction relative to the multiple detection portions in the first row, are alternately arranged in a direction intersecting the one direction.

The heater device according to claim 1, wherein the second detectors are arranged at positions offset from the first detectors in the one direction by half the predetermined interval between the first detectors.

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) that forms a wave shape.

The plurality of detection units each 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 disposed 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 has a transmitting electrode main line portion (231) extending along the first heat generating portion and the second heat generating portion;
the receiving electrode is disposed 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 has a receiving electrode main line portion (241) extending along the first heat generating portion and the second heat generating portion;
4. The heater device according to claim 1, wherein the transmitting electrode main line portion and the receiving electrode main line portion each have a waveform.

The first heat generating portion and the second heat generating portion each have a wave-shaped peak portion (21M) protruding in a direction intersecting with the one direction, and a wave-shaped valley portion (21V) protruding in a direction opposite to the direction intersecting with the one direction, and at least one of the peak portion of the second heat generating portion and the peak portion of the first heat generating portion face each other, and the valley portion of the second heat generating portion and the valley portion of the first heat generating portion face each other,
5. A heater device as described in any one of claims 1 to 4, wherein the detection portion is arranged between the peak portion of one of the second heating portions and the peak portion of the first heating portion, and between the valley portion of the other of the second heating portion and the valley portion of the first heating portion.

The first heat generating portion and the second heat generating portion each have a wave-shaped peak portion (21M) protruding in a direction intersecting with the one direction, and a wave-shaped valley portion (21V) protruding in a direction opposite to the direction intersecting with the one direction, and at least one of the peak portion of the second heat generating portion and the valley portion of the first heat generating portion face each other, and the valley portion of the second heat generating portion and the peak portion of the first heat generating portion face each other,
5. A heater device as described in any one of claims 1 to 4, wherein the detection portion is arranged between the peak portion of one of the second heating portions and the valley portion of the first heating portion, and between the valley portion of the other of the second heating portions and the peak portion of the first heating portion.

The plurality of detection units each 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 disposed 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 has a receiving electrode main line portion (241) extending along the first heat generating portion and the second heat generating portion;
4. The heater device according to claim 1, wherein the transmitting electrode has a transmitting electrode main wire portion (231) that is arranged between one side of the second heating portion and the first heating portion, and between the other side of the second heating portion and the first heating portion, so as to sandwich the receiving electrode main wire portion, and that extends along the first heating portion and the second heating portion.

the transmitting electrode has a transmitting electrode branch portion (232) extending from the transmitting electrode main line portion in a direction intersecting the transmitting electrode main line portion,
8. The heater device according to claim 4, wherein the receiving electrode has a receiving electrode branch portion (242 ) extending from the receiving electrode main portion in a direction intersecting the receiving electrode main portion.