JP2011254020A - Wiring board and method for manufacturing the same - Google Patents

Wiring board and method for manufacturing the same Download PDF

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JP2011254020A
JP2011254020A JP2010128185A JP2010128185A JP2011254020A JP 2011254020 A JP2011254020 A JP 2011254020A JP 2010128185 A JP2010128185 A JP 2010128185A JP 2010128185 A JP2010128185 A JP 2010128185A JP 2011254020 A JP2011254020 A JP 2011254020A
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wiring board
connection terminal
heat dissipation
high heat
substrate
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JP5590713B2 (en
Inventor
Akira Harao
彰 原尾
Minoru Kubota
実 久保田
Genshin Matsunaga
元辰 松永
Yasuhiro Sugiura
康広 杉浦
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Yazaki Corp
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Yazaki Corp
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Priority to JP2010128185A priority Critical patent/JP5590713B2/en
Priority to CN201110149817.1A priority patent/CN102271459B/en
Priority to US13/152,419 priority patent/US9888558B2/en
Publication of JP2011254020A publication Critical patent/JP2011254020A/en
Priority to US14/289,335 priority patent/US20140268581A1/en
Priority to US14/289,401 priority patent/US9480142B2/en
Application granted granted Critical
Publication of JP5590713B2 publication Critical patent/JP5590713B2/en
Priority to US15/077,211 priority patent/US9980364B2/en
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Abstract

PROBLEM TO BE SOLVED: To provide a wiring board achieving high heat dissipation effect and high density mounting, and a method for manufacturing the wiring board.SOLUTION: A wiring board 11A includes: a highly heat-dissipating substrate 21 having a highly thermally conductive layer, at least one surface of the front face and the rear face of the highly heat-dissipating substrate 21 being a mounting surface 21a of various kinds of components; a connection terminal 31 extending from the highly heat-dissipating substrate 21 and bent in a direction perpendicular to a surface of the highly heat-dissipating substrate 21; and a heat-dissipating piece 35 provided integrally with the connection terminal 31.

Description

本発明は、各種の電気・電子部品が実装される配線基板及びその製造方法に関する。   The present invention relates to a wiring board on which various electric / electronic components are mounted and a method for manufacturing the same.

従来より、各種の電気・電子部品が実装される配線基板として、基板の実装面に立設されて延びる接続端子を有し、この接続端子を、例えば、他の配線基板に接続するものが知られている。例えば、基板のスルーホールにリード端子を挿通、固定して互いの基板を接続する構造や(例えば、特許文献1参照)、配線パターン状に打ち抜かれた金属板と高熱伝導性の複合絶縁材料により少なくとも電子部品の搭載部分を露出した状態で一体成形した回路基板で金属板の一部を他の回路基板との外部接続端子として利用し、外部接続端子に設けた凸部で回路基板を容易に位置規制するようにした構造(例えば、特許文献2参照)などがある。特許文献2の回路基板では、金属板によって実装部品の熱を拡散させ、複合絶縁材料によって放熱させる。   Conventionally, as a wiring board on which various electric / electronic components are mounted, there is a connection terminal that is erected on the mounting surface of the board and extends, and this connection terminal is connected to, for example, another wiring board. It has been. For example, a structure in which lead terminals are inserted and fixed in through-holes in a substrate to connect the substrates to each other (see, for example, Patent Document 1), a metal plate punched into a wiring pattern, and a highly heat-conductive composite insulating material A circuit board that is integrally molded with at least the electronic component mounting part exposed. Part of the metal plate can be used as an external connection terminal with other circuit boards, and the circuit board can be easily formed with the protrusions provided on the external connection terminals. There is a structure in which the position is regulated (for example, see Patent Document 2). In the circuit board of Patent Document 2, the heat of the mounted component is diffused by the metal plate and is radiated by the composite insulating material.

特開平6−275328号公報JP-A-6-275328 特開平10−303522号公報JP-A-10-303522

上記のように配線基板を接続端子によって接続して並設させることにより、高密度実装が可能であるが、このように高密度実装化を図ると、金属板と高熱伝導性の複合絶縁材料とから基板を構成して放熱効果を高めただけでは、放熱が不十分となるおそれがあった。   High-density mounting is possible by connecting the wiring boards with the connection terminals in parallel as described above. However, when high-density mounting is achieved in this way, the metal plate and the high thermal conductivity composite insulating material However, if the substrate is simply constructed to enhance the heat dissipation effect, the heat dissipation may be insufficient.

つまり、配線基板を並設させるなどにより電気・電子部品のさらなる高密度実装化を図る場合、より高い放熱効果が必要であった。   In other words, a higher heat dissipation effect is required in order to further increase the density of electrical / electronic components by arranging wiring boards in parallel.

本発明は、上述した事情に鑑みてなされたものであり、その目的は、高い放熱効果が得られ、高密度実装が可能な配線基板及びその製造方法を提供することにある。   The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a wiring board capable of obtaining a high heat dissipation effect and capable of high-density mounting, and a manufacturing method thereof.

前述した目的を達成するために、本発明に係る配線基板は、下記(1)〜(8)を特徴としている。
(1) 表面及び裏面の少なくとも一方の面が各種部品の実装面とされた高熱伝導層を有する高放熱基板と、前記高放熱基板から延出し、該高放熱基板の面に対して直交する方向へ屈曲された接続端子と、前記接続端子に一体的に設けられた放熱片部と、を備えること。
(2) 上記(1)の構成の配線基板において、前記高放熱基板は、前記高熱伝導層である金属コアの表裏に絶縁層が設けられた金属コア基板からなること。
(3) 上記(1)または(2)の構成の配線基板において、前記接続端子の屈曲部分が側面視で円弧状に湾曲した湾曲部とされていること。
(4) 上記(1)〜(3)のいずれかの構成の配線基板において、前記高熱伝導層と前記接続端子が同一層に形成されていること。
(5) 上記(1)〜(4)のいずれかの構成の配線基板において、前記接続端子は複数個設けられ、該複数の接続端子のうち、少なくとも2個の接続端子は高放熱基板内部で電気的に接続されていること。
(6) 上記(1)〜(5)のいずれかの構成の配線基板において、前記高放熱基板の少なくとも一側縁部に凹部が形成され、前記接続端子が前記凹部の側面部から延出されていること。
(7) 上記(1)〜(5)のいずれかの構成の配線基板において、前記高放熱基板に窓部が形成され、前記接続端子が前記窓部の内側面部から延出されていること。
(8) 上記(1)〜(7)のいずれかの構成の配線基板において、前記接続端子は、前記高放熱基板に対して間隔をあけて並設される他の配線基板に接続されること。
In order to achieve the above-described object, a wiring board according to the present invention is characterized by the following (1) to (8).
(1) A high heat dissipation substrate having a high heat conductive layer in which at least one of the front and back surfaces is a mounting surface for various components, and a direction extending from the high heat dissipation substrate and orthogonal to the surface of the high heat dissipation substrate A connecting terminal bent to the connecting terminal, and a heat dissipating piece provided integrally with the connecting terminal.
(2) In the wiring board configured as described in (1) above, the high heat dissipation board is made of a metal core board in which an insulating layer is provided on the front and back of the metal core that is the high thermal conduction layer.
(3) In the wiring board configured as described in (1) or (2) above, the bent portion of the connection terminal is a curved portion that is curved in an arc shape in a side view.
(4) In the wiring board having any one of the constitutions (1) to (3), the high thermal conductive layer and the connection terminal are formed in the same layer.
(5) In the wiring board having any one of the constitutions (1) to (4), a plurality of the connection terminals are provided, and at least two of the connection terminals are provided inside the high heat dissipation board. Be connected electrically.
(6) In the wiring board having any one of the constitutions (1) to (5), a recess is formed in at least one side edge of the high heat dissipation substrate, and the connection terminal is extended from a side surface of the recess. That.
(7) In the wiring board having any one of the constitutions (1) to (5), a window portion is formed on the high heat dissipation substrate, and the connection terminal extends from an inner side surface portion of the window portion.
(8) In the wiring board having any one of the constitutions (1) to (7), the connection terminal is connected to another wiring board that is arranged in parallel with the high heat dissipation board. .

上記(1)の構成の配線基板では、高熱伝導層を有する高放熱基板に、放熱片部が一体的に設けられて表面積が大きくされた接続端子が設けられているので、高放熱基板自体の放熱効果とともに、接続端子による放熱効果も得ることができる。これにより、例えば、接続端子に各種の発熱する部品や他の基板を接続して高密度実装化を図ったとしても、十分な放熱効果を得ることができる。つまり、放熱効果を大幅に向上させて高密度実装を可能とすることができる。
また、接続端子において良好な放熱効果が得られるので、この接続端子の部品や他の基板との半田付け等による接続箇所への熱の伝達を極力抑えることができる。これにより、接続端子の接続箇所が熱により劣化して接続不良が生じるような不具合を防止し、接続の信頼性を維持することができる。
上記(2)の構成の配線基板では、金属コアの表裏に絶縁層が設けられた金属コア基板からなる高放熱基板であるので、実装された部品等の熱を金属コアによって均熱化して良好に放熱することができる。
上記(3)の構成の配線基板では、高放熱基板の面に対して直交する方向へ屈曲された接続端子の屈曲部分が側面視で円弧状に湾曲した湾曲部とされているので、接続端子に作用する外力や応力を湾曲部によって良好に吸収させることができ、接続端子の基板との固定箇所や接続端子の他の部品や他の基板等との接続箇所へ無理な力が作用して損傷するような不具合をなくすことができる。
上記(4)の構成の配線基板では、高熱伝導層と接続端子を同一層として形成するので、これら高熱伝導層と接続端子を同一の工程で作製することができ、配線基板の作製工程を低減することができる。
上記(5)の構成の配線基板では、複数の接続端子のうち少なくとも2個の接続端子が互いに電気的に接続されるので、この2個の接続端子を基板の表面で接続するための回路パターンを配索する必要がなく、基板上の各種部品を搭載するスペースを小さくすることができ、配線基板を小型化することができる。
上記(6)の構成の配線基板では、接続端子が、基板の少なくとも一側縁部に形成された凹部の側面部から延出されているので、実装面に接続端子を設ける場合と比較して、接続端子による実装面の占有を極力抑えて小型化を図ることができる。また、接続端子を、例えば、コネクタ等の部品に収容させる場合においても、その部品を凹部に配置することができるので、実装面に部品を配置させる場合と比較して、高さ寸法を抑えることができる。
上記(7)の構成の配線基板では、高熱伝導層を有する高放熱基板に窓部が形成されて通気性が高められているので、高放熱基板自体の放熱効果、接続端子の放熱片部による放熱効果とともに、窓部を形成したことによる放熱効果も得ることができる。これにより、例えば、窓部の内側面部から延出させた接続端子に他の基板を接続して高密度実装化を図ったとしても、十分な放熱効果を得ることができる。
上記(8)の構成の配線基板では、高い放熱性を有する高放熱基板に、放熱片部が形成された接続端子が設けられて放熱効果が大幅に高められているので、他の配線基板が並設されて高密度実装された状態においても、十分な放熱効果を得ることができ、また、接続端子を介した他の配線基板への熱の伝達も極力抑えることができる。
In the wiring board having the above configuration (1), the high heat dissipation board having the high heat conduction layer is provided with the connection terminals in which the heat dissipation pieces are integrally provided to increase the surface area. In addition to the heat dissipation effect, a heat dissipation effect by the connection terminals can be obtained. Thereby, for example, even if various heat-generating components and other substrates are connected to the connection terminals to achieve high-density mounting, a sufficient heat dissipation effect can be obtained. That is, it is possible to greatly improve the heat dissipation effect and enable high-density mounting.
In addition, since a good heat dissipation effect can be obtained at the connection terminal, it is possible to suppress heat transfer to the connection location by soldering the component of the connection terminal and other substrates as much as possible. As a result, it is possible to prevent a problem that the connection location of the connection terminal deteriorates due to heat and causes connection failure, and it is possible to maintain connection reliability.
The wiring board having the configuration (2) is a high heat dissipation board made of a metal core board having an insulating layer provided on the front and back of the metal core. Can dissipate heat.
In the wiring board having the configuration of (3) above, the bent portion of the connection terminal bent in the direction orthogonal to the surface of the high heat dissipation board is a curved portion that is curved in an arc shape when viewed from the side. The external force and stress acting on the board can be absorbed well by the curved part, and an unreasonable force acts on the place where the connection terminal is fixed to the board and the connection part where the connection terminal is connected to other parts or other boards. It is possible to eliminate defects that cause damage.
In the wiring board having the configuration (4), since the high thermal conductive layer and the connection terminal are formed as the same layer, the high thermal conductive layer and the connection terminal can be manufactured in the same process, and the manufacturing process of the wiring board is reduced. can do.
In the wiring board configured as described in (5) above, at least two of the plurality of connection terminals are electrically connected to each other. Therefore, a circuit pattern for connecting the two connection terminals on the surface of the board. It is not necessary to route the wiring board, the space for mounting various components on the board can be reduced, and the wiring board can be miniaturized.
In the wiring board having the configuration of (6) above, the connection terminal extends from the side surface of the recess formed in at least one side edge of the board, so that compared to the case where the connection terminal is provided on the mounting surface. Further, it is possible to reduce the size by suppressing the occupation of the mounting surface by the connection terminals as much as possible. In addition, when the connection terminal is accommodated in a component such as a connector, for example, the component can be disposed in the recess, so that the height dimension is suppressed as compared with the case where the component is disposed on the mounting surface. Can do.
In the wiring board configured as described in (7) above, since the window portion is formed on the high heat dissipation substrate having the high heat conduction layer to enhance the air permeability, the heat dissipation effect of the high heat dissipation substrate itself, the heat dissipation piece portion of the connection terminal, In addition to the heat dissipation effect, the heat dissipation effect due to the formation of the window portion can also be obtained. Thereby, for example, even if another substrate is connected to the connection terminal extended from the inner side surface portion of the window portion to achieve high-density mounting, a sufficient heat dissipation effect can be obtained.
In the wiring board having the above configuration (8), since the connection terminal having the heat radiating piece is provided on the high heat radiating board having high heat radiating property, the heat radiating effect is greatly enhanced. Even in the state of being arranged side by side and mounted at a high density, a sufficient heat dissipation effect can be obtained, and the transfer of heat to other wiring boards via the connection terminals can be suppressed as much as possible.

また、上述した目的を達成するために、本発明に係る配線基板の製造方法は、下記(9)を特徴としている。
(9) 表面及び裏面の少なくとも一方の面が各種部品の実装面とされた高熱伝導層を有する高放熱基板と、前記高放熱基板から延出し、該高放熱基板の面に対して直交する方向へ屈曲された接続端子と、前記接続端子に一体的に設けられた放熱片部とを備える配線基板の製造方法であって、前記接続端子となる導電性の金属板の表裏に絶縁層を積層させて前記高放熱基板を形成する基板形成工程と、前記高放熱基板の一部における前記絶縁層を除去して前記金属板を露出させる金属板露出工程と、露出させた前記金属板を加工して前記放熱片部が側方へ突出した前記接続端子を形成する接続端子形成工程と、を含むこと。
In order to achieve the above-described object, the method for manufacturing a wiring board according to the present invention is characterized by the following (9).
(9) A high heat dissipation substrate having a high heat conductive layer in which at least one of the front and back surfaces is a mounting surface for various components, and a direction extending from the high heat dissipation substrate and orthogonal to the surface of the high heat dissipation substrate A method of manufacturing a wiring board comprising a bent connection terminal and a heat dissipating piece provided integrally with the connection terminal, wherein insulating layers are laminated on the front and back of a conductive metal plate to be the connection terminal A substrate forming step of forming the high heat dissipation substrate, a metal plate exposing step of removing the insulating layer in a part of the high heat dissipation substrate to expose the metal plate, and processing the exposed metal plate. And a connecting terminal forming step for forming the connecting terminal in which the heat dissipating piece protrudes laterally.

上記(9)の構成の配線基板の製造方法では、高放熱基板に放熱片部を備えた接続端子を有した高密度実装が可能で放熱性に優れた配線基板を容易に製造することができる。また、放熱片部が側方へ突出した接続端子を形成するので、接続端子を形成する際に廃棄処分となる接続端子の周囲のブランク部分に放熱片部を形成することができる。これにより、接続端子を形成する際に金属板を有効に活用することができ、無駄を極力抑えて低コストで放熱効果を高めることができる。   In the method for manufacturing a wiring board having the above configuration (9), a high-heat-dissipating board having a connection terminal provided with a heat-dissipating piece can be mounted at high density, and a wiring board excellent in heat dissipation can be easily manufactured. . Moreover, since the connection terminal which the heat radiation piece part protruded to the side is formed, a heat radiation piece part can be formed in the blank part around the connection terminal used as disposal when forming a connection terminal. Thereby, when forming a connection terminal, a metal plate can be used effectively, waste can be suppressed as much as possible, and the heat dissipation effect can be enhanced at low cost.

本発明によれば、高い放熱効果が得られ、高密度実装が可能な配線基板及びその製造方法を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the high thermal radiation effect is acquired and the wiring board which can be mounted in high density, and its manufacturing method can be provided.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。   The present invention has been briefly described above. Further, details of the present invention will be further clarified by reading through the modes for carrying out the invention described below with reference to the accompanying drawings.

本発明の第1実施形態に係る配線基板の斜視図である。1 is a perspective view of a wiring board according to a first embodiment of the present invention. 本発明の第1実施形態に係る配線基板の一部の断面図である。It is a partial sectional view of a wiring board concerning a 1st embodiment of the present invention. 配線基板を構成する基板の構造を示す断面図である。It is sectional drawing which shows the structure of the board | substrate which comprises a wiring board. 配線基板の一部の平面図である。It is a top view of a part of wiring board. 配線基板の接続端子部分における斜視図である。It is a perspective view in the connection terminal part of a wiring board. 他の配線基板を並設させた第1実施形態の配線基板の一部の断面図である。It is a partial sectional view of the wiring board of the first embodiment in which other wiring boards are arranged side by side. コネクタを装着した第1実施形態の配線基板の斜視図である。It is a perspective view of the wiring board of 1st Embodiment equipped with the connector. 配線基板の変形例を示す一部の平面図である。It is a partial top view which shows the modification of a wiring board. 配線基板の変形例を示す一部の平面図である。It is a partial top view which shows the modification of a wiring board. 本発明の配線基板の製造工程を説明する図であって、(a)〜(f)は、それぞれ製造途中の配線基板の平面図及び断面図である。It is a figure explaining the manufacturing process of the wiring board of this invention, Comprising: (a)-(f) is the top view and sectional drawing of a wiring board in the middle of manufacture, respectively. 本発明の第2実施形態に係る配線基板の斜視図である。It is a perspective view of a wiring board concerning a 2nd embodiment of the present invention. 本発明の第2実施形態に係る配線基板の一部の断面図である。It is a partial sectional view of a wiring board concerning a 2nd embodiment of the present invention. 配線基板の一部の平面図である。It is a top view of a part of wiring board. 他の配線基板を並設させた第2実施形態の配線基板の一部の断面図である。It is sectional drawing of a part of wiring board of 2nd Embodiment which arranged other wiring boards side by side. 配線基板の変形例を示す一部の平面図である。It is a partial top view which shows the modification of a wiring board. 配線基板の変形例を示す一部の平面図である。It is a partial top view which shows the modification of a wiring board.

以下、本発明に係る実施形態の例を、図面を参照して説明する。   Hereinafter, examples of embodiments according to the present invention will be described with reference to the drawings.

(第1実施形態)
図1は本発明の第1実施形態に係る配線基板の斜視図、図2は本発明の第1実施形態に係る配線基板の一部の断面図、図3は配線基板を構成する基板の構造を示す断面図、図4は配線基板の一部の平面図、図5は配線基板の接続端子部分における斜視図である。
(First embodiment)
1 is a perspective view of a wiring board according to a first embodiment of the present invention, FIG. 2 is a partial cross-sectional view of the wiring board according to the first embodiment of the present invention, and FIG. 3 is a structure of the board constituting the wiring board. 4 is a plan view of a part of the wiring board, and FIG. 5 is a perspective view of a connection terminal portion of the wiring board.

図1及び図2に示したように、第1実施形態の配線基板11Aは、高放熱基板(以下、単に「基板」ともいう。)21と、この高放熱基板21に設けられた複数の接続端子31とを備えている。   As shown in FIGS. 1 and 2, the wiring substrate 11 </ b> A of the first embodiment includes a high heat dissipation substrate (hereinafter also simply referred to as “substrate”) 21 and a plurality of connections provided on the high heat dissipation substrate 21. And a terminal 31.

図3に示したように、基板21は、厚さ方向の中央に、銅または銅合金などから形成された板状の金属コア(高熱伝導層)22を有し、この金属コア22の表裏面に、熱硬化性及び絶縁性を有する合成樹脂などからなる絶縁層23が形成されている。そして、絶縁層23の表面に、回路パターン24が形成され、その表面がレジスト層25で覆われている。つまり、この基板21は、金属コア22が設けられて放熱性及び均熱性に優れた金属コア基板(高放熱基板)であり、図2に示したように、その表裏面が、回路パターン24を有する実装面21aとされ、この実装面21aに各種の電気・電子部品12が実装される。この金属コア基板である基板21において生じた電気・電子部品12等の熱は、金属コア22によって円滑に均熱されて外部に放熱される。   As shown in FIG. 3, the substrate 21 has a plate-like metal core (high thermal conductive layer) 22 formed of copper or a copper alloy at the center in the thickness direction. In addition, an insulating layer 23 made of a synthetic resin having thermosetting properties and insulating properties is formed. A circuit pattern 24 is formed on the surface of the insulating layer 23, and the surface is covered with a resist layer 25. That is, the substrate 21 is a metal core substrate (high heat dissipation substrate) provided with a metal core 22 and excellent in heat dissipation and heat uniformity, and as shown in FIG. The mounting surface 21a includes various electrical / electronic components 12 mounted on the mounting surface 21a. The heat of the electric / electronic component 12 and the like generated on the substrate 21 which is the metal core substrate is smoothly heated by the metal core 22 and radiated to the outside.

図1および図4に示したように、基板21には、両側縁部にそれぞれ凹部26が形成されており、これらの凹部26の長手方向の側面部26aから複数の接続端子31が整列状態で延出されている。これらの接続端子31は、例えば、基板21に形成されたスルーホール(図示略)によって回路パターン24と導通されている。   As shown in FIGS. 1 and 4, the substrate 21 is formed with recesses 26 at both side edges, and a plurality of connection terminals 31 are aligned from the longitudinal side surfaces 26 a of these recesses 26. It has been extended. These connection terminals 31 are electrically connected to the circuit pattern 24 by, for example, through holes (not shown) formed in the substrate 21.

接続端子31は、金属コア22と同じ銅または銅合金などの導電性を有する金属材料から形成されたもので、絶縁層23によって挟持されて固定され、金属コア22と同一層に形成されている。   The connection terminal 31 is formed from the same conductive metal material as the metal core 22, such as copper or copper alloy, and is sandwiched and fixed by the insulating layer 23 and formed in the same layer as the metal core 22. .

これらの接続端子31は、図2、図4および図5に示したように、基板21に固定された固定部32と、凹部26の側面部26aから延出された端子部33とを有している。端子部33は、基板21の表面に対して直交する上方向へ屈曲されており、この接続端子31の端子部33の屈曲部分は、側面視で円弧状に湾曲した湾曲部34として構成されている。尚、接続端子31は、その端子部33が基板21の側面の内側に位置するように設けられている。   As shown in FIGS. 2, 4, and 5, these connection terminals 31 include a fixing portion 32 that is fixed to the substrate 21 and a terminal portion 33 that extends from the side surface portion 26 a of the recess 26. ing. The terminal portion 33 is bent in an upward direction orthogonal to the surface of the substrate 21, and the bent portion of the terminal portion 33 of the connection terminal 31 is configured as a curved portion 34 that is curved in an arc shape in a side view. Yes. The connection terminal 31 is provided such that the terminal portion 33 is located inside the side surface of the substrate 21.

また、接続端子31の端子部33には、放熱片部35が一体的に設けられている。この放熱片部35は、プレス加工によって接続端子31の端子部33に形成されたもので、端子部33の一側部から側方へ延出されている。   Further, the heat radiating piece 35 is provided integrally with the terminal portion 33 of the connection terminal 31. The heat radiating piece 35 is formed in the terminal portion 33 of the connection terminal 31 by press working, and extends from one side portion of the terminal portion 33 to the side.

接続端子31は、放熱片部35が形成されたことにより、外部に露出する部分の表面積が大きくされ、よって、放熱性が大幅に向上されている。   Since the connection terminal 31 is formed with the heat radiation piece 35, the surface area of the portion exposed to the outside is increased, and thus the heat dissipation is greatly improved.

上記構成の配線基板11Aでは、例えば、接続端子31を他の配線基板へ接続したり、あるいは、接続端子31に、コネクタ等の部品が装着される。   In the wiring board 11A having the above configuration, for example, the connection terminal 31 is connected to another wiring board, or a component such as a connector is attached to the connection terminal 31.

この配線基板11Aによれば、高熱伝導層である金属コア22の表裏に絶縁層23が設けられた金属コア基板からなる基板21に、放熱片部35が一体的に設けられて表面積が大きくされた接続端子31が設けられているので、基板21自体の放熱効果とともに、接続端子31による放熱効果も得ることができる。つまり、金属コア基板からなる基板21と接続端子31とがそれぞれ離間している場合でも、放熱片部35により接続端子31の放熱効果が得られる。これにより、例えば、接続端子31に各種の発熱する部品や他の基板を接続して高密度実装化を図ったとしても、十分な放熱効果を得ることができる。つまり、放熱効果を大幅に向上させて高密度実装を可能とすることができる。   According to this wiring board 11A, the heat radiating piece 35 is integrally provided on the substrate 21 made of the metal core substrate in which the insulating layer 23 is provided on the front and back of the metal core 22 which is a high thermal conductive layer, thereby increasing the surface area. Since the connection terminal 31 is provided, the heat dissipation effect of the connection terminal 31 can be obtained in addition to the heat dissipation effect of the substrate 21 itself. That is, even when the substrate 21 made of the metal core substrate and the connection terminal 31 are separated from each other, the heat radiation effect of the connection terminal 31 can be obtained by the heat radiation piece 35. Thereby, for example, even if various heat-generating components and other substrates are connected to the connection terminal 31 to achieve high-density mounting, a sufficient heat dissipation effect can be obtained. That is, it is possible to greatly improve the heat dissipation effect and enable high-density mounting.

また、接続端子31において良好な放熱効果が得られるので、この接続端子31の部品や他の基板との半田付け等による接続箇所への熱の伝達を極力抑えることができる。これにより、接続端子31の接続箇所が熱により劣化して接続不良が生じるような不具合を防止し、接続の信頼性を維持することができる。   In addition, since a good heat dissipation effect can be obtained at the connection terminal 31, it is possible to suppress heat transmission to the connection location by soldering the component of the connection terminal 31 and other substrates as much as possible. As a result, it is possible to prevent a problem that the connection location of the connection terminal 31 deteriorates due to heat and causes a connection failure, and it is possible to maintain connection reliability.

図6は、第1実施形態の配線基板11Aに他の配線基板41を並設させて接続した状態を示す図である。図6に示したように、配線基板11Aの接続端子31の端子部33が、基板21に対して間隔をあけて並設される他の配線基板41に半田付け等によって接続される。   FIG. 6 is a diagram illustrating a state in which another wiring board 41 is arranged in parallel and connected to the wiring board 11A of the first embodiment. As shown in FIG. 6, the terminal portion 33 of the connection terminal 31 of the wiring board 11 </ b> A is connected by soldering or the like to another wiring board 41 that is arranged in parallel with the board 21.

そして、このように、配線基板11Aに他の配線基板41を並設して高密度実装しても、配線基板11Aが高い放熱性を有する金属コア基板からなる基板21に高い放熱性を有する接続端子31を設けているので、十分な放熱効果を得ることができる。   Thus, even if another wiring board 41 is arranged side by side on the wiring board 11A and mounted at a high density, the wiring board 11A is connected to the substrate 21 made of a metal core substrate having a high heat dissipation property. Since the terminal 31 is provided, a sufficient heat dissipation effect can be obtained.

例えば、大電流が流されることにより発熱量が多いトランジスター等を実装した電源用の配線基板と、熱に弱い集積回路を実装した制御用の配線基板とを並設するような場合、上記の配線基板11Aを電源用とし、制御用の配線基板を他の配線基板41として並設するのが好ましい。このようにすると、電源用とした配線基板11Aにおいて、十分に放熱させることができ、また、接続端子31を介した熱の伝達も極力抑えることができ、よって、制御用とした他の配線基板41への熱の影響を極力抑えることができる。   For example, in the case where a power supply wiring board mounted with a transistor that generates a large amount of heat due to a large current flow and a control wiring board mounted with a heat-sensitive integrated circuit are arranged in parallel, the above wiring It is preferable that the board 11 </ b> A is used as a power source and the control wiring board is arranged in parallel as another wiring board 41. In this way, in the wiring board 11A for power supply, heat can be sufficiently dissipated, and heat transfer through the connection terminal 31 can be suppressed as much as possible, so that another wiring board for control can be used. The influence of heat on 41 can be suppressed as much as possible.

また、接続端子31は、基板21の凹部26の側面部26aから延出されて凹部26に配置されているので、接続端子31の他の配線基板41との接続位置を、配線基板11Aの側部よりも内側にすることができ、よって、配線基板11Aに並設させる他の配線基板41として、配線基板11Aと同等の大きさの配線基板41、または配線基板11Aよりも小さい配線基板41を並設させることができ、小型化を図ることができる。   Moreover, since the connection terminal 31 is extended from the side surface part 26a of the recessed part 26 of the board | substrate 21, and is arrange | positioned at the recessed part 26, the connection position of the connection terminal 31 with the other wiring board 41 is set to the wiring board 11A side. Therefore, as another wiring board 41 arranged in parallel with the wiring board 11A, a wiring board 41 having the same size as the wiring board 11A or a wiring board 41 smaller than the wiring board 11A is used. They can be arranged side by side, and downsizing can be achieved.

また、この配線基板11Aによれば、接続端子31が、凹部26の側面部26aから基板21の面に対して直交する方向へ屈曲され、その屈曲部分が側面視で円弧状に湾曲した湾曲部34とされているので、接続端子31に作用する外力や応力を湾曲部34によって良好に吸収させることができる。例えば、配線基板11Aを収容した機器を自動車等の車両へ搭載したとしても、走行時等における振動が湾曲部34によって円滑に吸収され、また、接続端子31を他の部品等に接続する際に寸法ずれがあったとしても、寸法ずれによって生じる応力が湾曲部34によって円滑に吸収される。   Further, according to the wiring substrate 11A, the connection terminal 31 is bent in a direction orthogonal to the surface of the substrate 21 from the side surface portion 26a of the recess 26, and the bent portion is curved in an arc shape in a side view. Therefore, the external force and stress acting on the connection terminal 31 can be satisfactorily absorbed by the curved portion 34. For example, even when a device containing the wiring board 11A is mounted on a vehicle such as an automobile, vibrations during traveling and the like are smoothly absorbed by the curved portion 34, and when the connection terminal 31 is connected to another component or the like. Even if there is a dimensional deviation, the stress caused by the dimensional deviation is smoothly absorbed by the curved portion 34.

このように、接続端子31に湾曲部34が形成されているので、接続端子31の基板21との固定箇所や接続端子31の端子部33の半田付け等による接続箇所へ無理な力が作用して損傷するような不具合をなくすことができる。   As described above, since the curved portion 34 is formed on the connection terminal 31, an unreasonable force acts on the connection portion 31 where the connection terminal 31 is fixed to the substrate 21 or the connection portion where the terminal portion 33 of the connection terminal 31 is soldered. Can be eliminated.

図7は、上記の配線基板11Aにコネクタ45を設けた例であり、コネクタ45は、各電子機器や電源等に設けられた相手側のコネクタに接続される。図7に示したように、この配線基板11Aでは、周囲の四辺の側縁部に凹部26が形成されており、これらの凹部26に、コネクタ45を構成するハウジング46が配置されている。そして、これらのハウジング46に、凹部26の側面部26aから延出された接続端子31が収容されている。このように、凹部26にコネクタ45のハウジング46が配置された配線基板11Aによれば、高密度に実装しても良好な放熱効果を得ることができるとともに、高さ寸法を抑えて薄型化を図ることができる。例えば、実装面21aにハウジング46を配置させる場合では、基板21及びハウジング46の厚み以上の高さ寸法となるが、本実施形態の配線基板11Aでは、高さ寸法をハウジング46の厚みだけに抑えることができる。   FIG. 7 shows an example in which a connector 45 is provided on the above-described wiring board 11A. The connector 45 is connected to a mating connector provided in each electronic device, power source, or the like. As shown in FIG. 7, in this wiring board 11 </ b> A, recesses 26 are formed on the side edges of the four surrounding sides, and a housing 46 constituting the connector 45 is disposed in these recesses 26. The housing 46 accommodates the connection terminal 31 extending from the side surface portion 26 a of the recess 26. Thus, according to the wiring board 11A in which the housing 46 of the connector 45 is disposed in the recess 26, a good heat dissipation effect can be obtained even when mounted at a high density, and the height can be reduced and the thickness can be reduced. Can be planned. For example, when the housing 46 is disposed on the mounting surface 21a, the height dimension is equal to or greater than the thickness of the substrate 21 and the housing 46. However, in the wiring board 11A of the present embodiment, the height dimension is limited to the thickness of the housing 46. be able to.

なお、上記の配線基板11Aでは、金属コア22と分離した接続端子31を設けた場合を例にとって説明したが、図8に示すように、接続端子31を金属コア22と一体に形成してもよい。金属コア22と一体に形成された接続端子31を有する配線基板11Aでは、金属コア22の一部に接続端子31を形成し、これらの接続端子31を、凹部26の側面部26aから側方へ延出させる。このように金属コア22と一体に形成した接続端子31では、例えば、金属コア22をグランドとして用い、接続端子31をグランド端子として容易に用いることができる。   In the wiring board 11A, the case where the connection terminal 31 separated from the metal core 22 is provided has been described as an example. However, as shown in FIG. 8, the connection terminal 31 may be formed integrally with the metal core 22. Good. In the wiring board 11 </ b> A having the connection terminal 31 formed integrally with the metal core 22, the connection terminal 31 is formed in a part of the metal core 22, and these connection terminals 31 are laterally extended from the side surface portion 26 a of the recess 26. Extend. In the connection terminal 31 formed integrally with the metal core 22 in this manner, for example, the metal core 22 can be used as a ground and the connection terminal 31 can be easily used as a ground terminal.

また、図9に示すように、配線基板11Aとしては、複数の接続端子31のうち少なくとも2個の接続端子31aを、基板21の内部で電気的に接続するように一体に形成してもよい。このように接続端子31のうちの少なくとも2個の接続端子31aを電気的に接続するように構成すれば、この2個の接続端子を基板の表面で接続するための回路パターンを配索する必要がなく、基板上の各種部品を搭載するスペースを小さくすることができ、配線基板を小型化することができる。   As shown in FIG. 9, as the wiring substrate 11 </ b> A, at least two connection terminals 31 a among the plurality of connection terminals 31 may be integrally formed so as to be electrically connected inside the substrate 21. . Thus, if at least two of the connection terminals 31 are configured to be electrically connected, it is necessary to route a circuit pattern for connecting the two connection terminals on the surface of the substrate. Therefore, the space for mounting various components on the board can be reduced, and the wiring board can be reduced in size.

次に、第1実施形態の配線基板11Aを製造する場合について、金属コア22と分離した接続端子31を有する構造のものを例にとって説明する。   Next, the case where the wiring board 11A of the first embodiment is manufactured will be described by taking as an example a structure having the connection terminal 31 separated from the metal core 22.

図10は配線基板の製造工程を説明する図であって、(a)〜(f)は、それぞれ製造途中の配線基板の平面図及び断面図である。   FIG. 10 is a diagram for explaining a manufacturing process of a wiring board, and (a) to (f) are a plan view and a cross-sectional view of the wiring board in the middle of manufacturing.

<金属コア加工工程>
まず、図10(a)に示したように、平板状の金属コア22にプレス加工を施すことによって、接続端子31の固定部32を有する開口部51を形成する。
<Metal core processing process>
First, as shown in FIG. 10A, the flat metal core 22 is pressed to form the opening 51 having the fixing portion 32 of the connection terminal 31.

<マスキング工程>
次に、図10(b)に示したように、凹部26を形成する予定の箇所における金属コア22の表裏に、耐熱性のマスキングテープ52を貼り付ける。
<Masking process>
Next, as shown in FIG. 10B, heat-resistant masking tape 52 is affixed to the front and back of the metal core 22 where the recess 26 is to be formed.

<基板形成工程>
次に、金属コア22の表裏面を、例えば、サンドブラストによって粗面化し、その後、図10(c)に示したように、金属コア22の表裏面に絶縁層23を積層させて基板21を形成する。これにより、開口部51が絶縁層23によって塞がれる。このとき、凹部26を形成する箇所は、マスキングテープ52によって保護されているため、サンドブラストによる粗面化が防がれ、また、絶縁層23が付着されることがない。
<Substrate formation process>
Next, the front and back surfaces of the metal core 22 are roughened by, for example, sandblasting, and then the substrate 21 is formed by laminating the insulating layer 23 on the front and back surfaces of the metal core 22 as shown in FIG. To do. Thereby, the opening 51 is closed by the insulating layer 23. At this time, since the portion where the recess 26 is formed is protected by the masking tape 52, roughening by sandblasting is prevented and the insulating layer 23 is not attached.

<金属板(高熱伝導層)露出工程>
図10(d)に示したように、マスキングテープ52が貼り付けられた凹部26の形成箇所における絶縁層23を、ざぐり加工等によって除去し、マスキングテープ52を剥がして金属コア22を露出させる。
<Metal plate (high thermal conductive layer) exposure process>
As shown in FIG. 10 (d), the insulating layer 23 in the formation portion of the recess 26 where the masking tape 52 is attached is removed by spotting or the like, and the masking tape 52 is peeled off to expose the metal core 22.

<接続端子形成工程>
そして、図10(e)に示したように、露出させた金属コア22を、プレス加工またはルータを用いた切削加工等によって凹部26及び放熱片部35が側方へ突出した接続端子31の端子部33を形成する。その後、形成した接続端子31の端子部33には、メッキ処理を施す。
<Connecting terminal formation process>
Then, as shown in FIG. 10 (e), the exposed metal core 22 is connected to the terminal of the connection terminal 31 in which the recess 26 and the heat radiating piece 35 protrude laterally by pressing or cutting using a router. A portion 33 is formed. Thereafter, the terminal portion 33 of the formed connection terminal 31 is subjected to a plating process.

<接続端子加工工程>
最後に、図10(f)に示したように、プレス加工等によって接続端子31の端子部33を所定の形状に成形する。具体的には、基板21の一方の面側へ屈曲させるとともに、屈曲箇所を湾曲させて湾曲部34を形成し、また、放熱片部35を折り曲げる。
<Connecting terminal machining process>
Finally, as shown in FIG. 10F, the terminal portion 33 of the connection terminal 31 is formed into a predetermined shape by pressing or the like. Specifically, the bending portion 34 is formed by bending the one side of the substrate 21, the bending portion is bent, and the heat radiating piece 35 is bent.

上記の工程によって、金属コア基板である基板21に放熱片部35を備えた接続端子31を有した高密度実装が可能で放熱性に優れた配線基板11Aを容易に製造することができる。また、放熱片部35が側方へ突出した接続端子31を形成するので、接続端子31を形成する際に廃棄処分となる接続端子31の周囲のブランク部分に放熱片部35を形成することができる。これにより、接続端子31を形成する際に金属コア22を有効に活用することができ、無駄を極力抑えて低コストで放熱効果を高めることができる。   Through the above steps, the wiring board 11A having high heat dissipation and capable of high-density mounting having the connection terminals 31 provided with the heat dissipating pieces 35 on the substrate 21 which is a metal core substrate can be easily manufactured. Moreover, since the heat radiation piece part 35 forms the connection terminal 31 which protruded to the side, the heat radiation piece part 35 can be formed in the blank part around the connection terminal 31 which is disposed of when the connection terminal 31 is formed. it can. Thereby, when forming the connection terminal 31, the metal core 22 can be utilized effectively, waste can be suppressed as much as possible, and the heat dissipation effect can be enhanced at low cost.

なお、金属コア22に接続端子31が一体に設けられた配線基板11A(図8参照)を製造する場合、上記の金属コア加工工程は省略となる。   In addition, when manufacturing the wiring board 11A (refer FIG. 8) by which the connection terminal 31 was integrally provided in the metal core 22, said metal core processing process is abbreviate | omitted.

(第2実施形態)
次に、第2実施形態に係る配線基板について説明する。
なお、上記の第1実施形態に係る配線基板11Aと同一構成部分は、同一符号を付して説明を省略する。
(Second Embodiment)
Next, the wiring board according to the second embodiment will be described.
Note that the same components as those of the wiring board 11A according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

図11は本発明の第2実施形態に係る配線基板の斜視図、図12は本発明の第2実施形態に係る配線基板の一部の断面図、図13は配線基板の一部の平面図である。   11 is a perspective view of a wiring board according to the second embodiment of the present invention, FIG. 12 is a sectional view of a part of the wiring board according to the second embodiment of the present invention, and FIG. 13 is a plan view of a part of the wiring board. It is.

図11〜図13に示したように、第2実施形態に係る配線基板11Bも、金属コア22の表裏面に絶縁層23が形成された高放熱基板21と、この高放熱基板21に設けられた複数の接続端子31とを備えている。   As shown in FIGS. 11 to 13, the wiring board 11 </ b> B according to the second embodiment is also provided on the high heat dissipation substrate 21 having the insulating layer 23 formed on the front and back surfaces of the metal core 22 and the high heat dissipation substrate 21. And a plurality of connection terminals 31.

基板21には、金属コア22部分に窓部27が形成されており、この窓部27を構成する一つの内側面部、すなわち長手方向の内側面部27aから複数の接続端子31が整列状態で延出されている。接続端子31は、金属コア22と同じ銅または銅合金などの導電性を有する金属材料から形成されたもので、絶縁層23によって挟持されて固定され、金属コア22と同一層に形成されている。   A window portion 27 is formed in the metal core 22 portion of the substrate 21, and a plurality of connection terminals 31 extend in an aligned state from one inner side surface portion constituting the window portion 27, that is, the inner side surface portion 27a in the longitudinal direction. Has been. The connection terminal 31 is formed from the same conductive metal material as the metal core 22, such as copper or copper alloy, and is sandwiched and fixed by the insulating layer 23 and formed in the same layer as the metal core 22. .

これらの接続端子31も、基板21に固定された固定部32と、窓部26の内側面部26aから延出された端子部33とを有しており、端子部33は、基板21の表面に対して直交する上方向へ屈曲されている。また、この接続端子31の端子部33の屈曲部分は、側面視で円弧状に湾曲した湾曲部34として構成されており、また、一側部から側方へ延出する放熱片部35が形成されて表面積が大きくされている。   These connection terminals 31 also have a fixing portion 32 fixed to the substrate 21 and a terminal portion 33 extending from the inner side surface portion 26 a of the window portion 26, and the terminal portion 33 is formed on the surface of the substrate 21. It is bent upward in the direction perpendicular to it. Further, the bent portion of the terminal portion 33 of the connection terminal 31 is configured as a curved portion 34 that is curved in an arc shape when viewed from the side, and a heat radiating piece portion 35 extending from one side to the side is formed. The surface area has been increased.

上記構成の配線基板11Bでも、例えば、接続端子31を他の配線基板へ接続したり、あるいは、接続端子31に、コネクタ等の部品が装着される。   Also in the wiring board 11B having the above configuration, for example, the connection terminal 31 is connected to another wiring board, or a component such as a connector is attached to the connection terminal 31.

この配線基板11Bの場合も、高熱伝導層である金属コア22の表裏に絶縁層23が設けられた金属コア基板からなる基板21に、放熱片部35が一体的に設けられて表面積が大きくされた接続端子31が設けられているので、基板21自体の放熱効果とともに、接続端子31による放熱効果も得ることができる。つまり、金属コア基板からなる基板21と接続端子31とがそれぞれ離間している場合でも、放熱片部35により接続端子31の放熱効果が得られる。これにより、例えば、接続端子31に各種の発熱する部品や他の基板を接続して高密度実装化を図ったとしても、十分な放熱効果を得ることができる。つまり、放熱効果を大幅に向上させて高密度実装を可能とすることができる。   Also in the case of this wiring board 11B, the heat radiating piece 35 is integrally provided on the substrate 21 made of the metal core substrate in which the insulating layer 23 is provided on the front and back of the metal core 22 which is a high thermal conductive layer, thereby increasing the surface area. Since the connection terminal 31 is provided, the heat dissipation effect of the connection terminal 31 can be obtained in addition to the heat dissipation effect of the substrate 21 itself. That is, even when the substrate 21 made of the metal core substrate and the connection terminal 31 are separated from each other, the heat radiation effect of the connection terminal 31 can be obtained by the heat radiation piece 35. Thereby, for example, even if various heat-generating components and other substrates are connected to the connection terminal 31 to achieve high-density mounting, a sufficient heat dissipation effect can be obtained. That is, it is possible to greatly improve the heat dissipation effect and enable high-density mounting.

特に、基板21に窓部27が形成されて通気性が高められているので、基板21自体の放熱効果、接続端子31の放熱片部35による放熱効果とともに、窓部27を形成したことによる放熱効果も得ることができる。   In particular, since the window portion 27 is formed on the substrate 21 and the air permeability is enhanced, the heat radiation effect of the substrate 21 itself, the heat radiation effect by the heat radiation piece portion 35 of the connection terminal 31, and the heat radiation due to the formation of the window portion 27. An effect can also be obtained.

ここで、図14に第2実施形態の配線基板11Bに他の配線基板41を並設させた例を示す。図14に示したように、配線基板11Bの接続端子31の端子部33が、基板21に対して間隔をあけて並設される他の配線基板41に半田付け等によって接続される。   Here, FIG. 14 shows an example in which another wiring board 41 is juxtaposed with the wiring board 11B of the second embodiment. As shown in FIG. 14, the terminal portion 33 of the connection terminal 31 of the wiring board 11 </ b> B is connected by soldering or the like to another wiring board 41 that is arranged in parallel with the board 21.

そして、このように、配線基板11Bに他の配線基板41を並設して高密度実装しても、配線基板11Bが高い放熱性を有する金属コア基板からなる基板21に高い放熱性を有する接続端子31を設けて放熱効果が大幅に向上されているので、十分な放熱効果を得ることができる。   Thus, even when another wiring board 41 is arranged in parallel on the wiring board 11B and mounted at high density, the wiring board 11B has a high heat dissipation connection to the substrate 21 made of a metal core substrate having a high heat dissipation characteristic. Since the terminal 31 is provided and the heat dissipation effect is greatly improved, a sufficient heat dissipation effect can be obtained.

また、接続端子31は、基板21の窓部27を構成する内側面部27aから延出されて窓部27に配置されているので、接続端子31の他の配線基板41との接続位置を、配線基板11Bの側部よりも内側にすることができ、よって、第2実施形態の配線基板11Bに並設させる他の配線基板41として、配線基板11Bと同等の大きさの配線基板41、または配線基板11Bよりも小さい配線基板41を並設させることができ、小型化を図ることができる。   Further, since the connection terminal 31 extends from the inner side surface portion 27a constituting the window portion 27 of the substrate 21 and is disposed in the window portion 27, the connection position of the connection terminal 31 with the other wiring substrate 41 is determined by wiring. The wiring board 41 can be located on the inner side of the side of the board 11B. Therefore, as the other wiring board 41 arranged in parallel with the wiring board 11B of the second embodiment, the wiring board 41 having the same size as the wiring board 11B, or the wiring Wiring boards 41 smaller than the board 11B can be provided side by side, and downsizing can be achieved.

また、この配線基板11Bの場合も、接続端子31が、内側面部27aから基板21の面に対して直交する方向へ屈曲され、その屈曲部分が側面視で円弧状に湾曲した湾曲部34とされているので、接続端子31に作用する外力や応力を湾曲部34によって良好に吸収させることができる。例えば、配線基板11Bを収容した機器を自動車等の車両へ搭載したとしても、走行時等における振動が湾曲部34によって円滑に吸収され、また、接続端子31を他の部品等に接続する際に寸法ずれがあったとしても、寸法ずれによって生じる応力が湾曲部34によって円滑に吸収される。   Also in the case of this wiring board 11B, the connection terminal 31 is bent in a direction perpendicular to the surface of the substrate 21 from the inner side surface portion 27a, and the bent portion is a curved portion 34 curved in an arc shape in a side view. Therefore, the external force and stress acting on the connection terminal 31 can be favorably absorbed by the curved portion 34. For example, even when a device containing the wiring board 11B is mounted on a vehicle such as an automobile, vibrations during traveling and the like are smoothly absorbed by the curved portion 34, and when the connection terminal 31 is connected to other components or the like. Even if there is a dimensional deviation, the stress caused by the dimensional deviation is smoothly absorbed by the curved portion 34.

また、接続端子31に湾曲部34が形成されていることで、接続端子31の基板21との固定箇所や接続端子31の端子部33の半田付け等による接続箇所へ無理な力が作用して損傷するような不具合をなくすことができる。   Further, since the curved portion 34 is formed on the connection terminal 31, an unreasonable force acts on the connection portion 31 where the connection terminal 31 is fixed to the substrate 21 or the connection portion due to soldering of the terminal portion 33 of the connection terminal 31. It is possible to eliminate defects that cause damage.

なお、上記の配線基板11Bでは、金属コア22と分離した接続端子31を設けた場合を例にとって説明したが、図15に示すように、接続端子31を金属コア22と一体に形成してもよい。金属コア22と一体に形成された接続端子31を有する配線基板11Bでは、金属コア22の一部に接続端子31を形成し、これらの接続端子31を、窓部27の内側面部27aから側方へ延出させる。このように、金属コア22と接続端子31とを一体に形成することでより放熱効果が高くなる。また、このように金属コア22と一体に形成した接続端子31では、例えば、金属コア22をグランドとして用い、接続端子31をグランド端子として容易に用いることができる。   In the wiring board 11B, the case where the connection terminal 31 separated from the metal core 22 is provided has been described as an example. However, as shown in FIG. 15, the connection terminal 31 may be formed integrally with the metal core 22. Good. In the wiring board 11 </ b> B having the connection terminal 31 formed integrally with the metal core 22, the connection terminal 31 is formed in a part of the metal core 22, and these connection terminals 31 are laterally connected from the inner side surface portion 27 a of the window portion 27. To extend. Thus, the heat dissipation effect becomes higher by forming the metal core 22 and the connection terminal 31 integrally. Moreover, in the connection terminal 31 formed integrally with the metal core 22 in this way, for example, the metal core 22 can be used as a ground and the connection terminal 31 can be easily used as a ground terminal.

また、図16に示すように、配線基板11Bとしては、複数の接続端子31のうち少なくとも2個の接続端子31aを、基板21の内部で電気的に接続するように一体に形成してもよい。このように接続端子31のうちの少なくとも2個の接続端子31aを電気的に接続するように構成すれば、この2個の接続端子を基板の表面で接続するための回路パターンを配索する必要がなく、基板上の各種部品を搭載するスペースを小さくすることができ、配線基板を小型化することができる。   As shown in FIG. 16, as the wiring board 11 </ b> B, at least two connection terminals 31 a among the plurality of connection terminals 31 may be integrally formed so as to be electrically connected inside the board 21. . Thus, if at least two of the connection terminals 31 are configured to be electrically connected, it is necessary to route a circuit pattern for connecting the two connection terminals on the surface of the substrate. Therefore, the space for mounting various components on the board can be reduced, and the wiring board can be reduced in size.

尚、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

11A,11B 配線基板
12 電気・電子部品(部品)
21 基板(高放熱基板)
21a 実装面
22 金属コア(高熱伝導層)
23 絶縁層
26 凹部
26a 側面部
27 窓部
27a 内側面部
31 接続端子
34 湾曲部
35 放熱片部
41 他の配線基板
11A, 11B Wiring board 12 Electrical / electronic components (components)
21 Substrate (High heat dissipation substrate)
21a Mounting surface 22 Metal core (high thermal conductivity layer)
23 Insulating layer 26 Recessed portion 26a Side surface portion 27 Window portion 27a Inner side surface portion 31 Connection terminal 34 Bending portion 35 Heat radiation piece portion 41 Other wiring board

Claims (9)

表面及び裏面の少なくとも一方の面が各種部品の実装面とされた高熱伝導層を有する高放熱基板と、
前記高放熱基板から延出し、該高放熱基板の面に対して直交する方向へ屈曲された接続端子と、
前記接続端子に一体的に設けられた放熱片部と、
を備えることを特徴とする配線基板。
A high heat dissipation substrate having a high thermal conductive layer in which at least one of the front surface and the back surface is a mounting surface of various components;
A connection terminal extending from the high heat dissipation substrate and bent in a direction perpendicular to the surface of the high heat dissipation substrate;
A heat dissipating piece provided integrally with the connection terminal;
A wiring board comprising:
前記高放熱基板は、前記高熱伝導層である金属コアの表裏に絶縁層が設けられた金属コア基板からなることを特徴とする請求項1に記載の配線基板。   The wiring board according to claim 1, wherein the high heat dissipation substrate includes a metal core substrate in which an insulating layer is provided on both sides of the metal core that is the high thermal conductive layer. 前記接続端子の屈曲部分が側面視で円弧状に湾曲した湾曲部とされていることを特徴とする請求項1または請求項2に記載の配線基板。   The wiring board according to claim 1, wherein a bent portion of the connection terminal is a curved portion that is curved in an arc shape in a side view. 前記高熱伝導層と前記接続端子が同一層に形成されていることを特徴とする請求項1〜請求項3のいずれか1項に記載の配線基板。   The wiring board according to any one of claims 1 to 3, wherein the high thermal conductive layer and the connection terminal are formed in the same layer. 前記接続端子は複数個設けられ、該複数の接続端子のうち、少なくとも2個の接続端子は高放熱基板内部で電気的に接続されていることを特徴とする請求項1〜請求項4のいずれか1項に記載の配線基板。   5. The connection terminal according to claim 1, wherein a plurality of the connection terminals are provided, and at least two of the connection terminals are electrically connected inside the high heat dissipation substrate. The wiring board according to claim 1. 前記高放熱基板の少なくとも一側縁部に凹部が形成され、前記接続端子が前記凹部の側面部から延出されていることを特徴とする請求項1〜請求項5のいずれか1項に記載の配線基板。   6. The recess according to claim 1, wherein a recess is formed in at least one side edge of the high heat dissipation substrate, and the connection terminal extends from a side surface of the recess. Wiring board. 前記高放熱基板に窓部が形成され、前記接続端子が前記窓部の内側面部から延出されていることを特徴とする請求項1〜請求項5のいずれか1項に記載の配線基板。   6. The wiring board according to claim 1, wherein a window portion is formed on the high heat dissipation substrate, and the connection terminal extends from an inner side surface portion of the window portion. 前記接続端子は、前記高放熱基板に対して間隔をあけて並設される他の配線基板に接続されることを特徴とする請求項1〜請求項7のいずれか1項に記載の配線基板。   The wiring board according to any one of claims 1 to 7, wherein the connection terminal is connected to another wiring board that is arranged in parallel with the high heat dissipation board at an interval. . 表面及び裏面の少なくとも一方の面が各種部品の実装面とされた高熱伝導層を有する高放熱基板と、前記高放熱基板から延出し、該高放熱基板の面に対して直交する方向へ屈曲された接続端子と、前記接続端子に一体的に設けられた放熱片部とを備える配線基板の製造方法であって、
前記接続端子となる導電性の金属板の表裏に絶縁層を積層させて前記高放熱基板を形成する基板形成工程と、
前記高放熱基板の一部における前記絶縁層を除去して前記金属板を露出させる金属板露出工程と、
露出させた前記金属板を加工して前記放熱片部が側方へ突出した前記接続端子を形成する接続端子形成工程と、
を含むことを特徴とする配線基板の製造方法。
A high heat dissipation substrate having a high heat conduction layer in which at least one of the front surface and the back surface is a mounting surface for various components, and is bent in a direction perpendicular to the surface of the high heat dissipation substrate, extending from the high heat dissipation substrate. A wiring board comprising a connection terminal and a heat dissipating piece provided integrally with the connection terminal,
A substrate forming step of forming the high heat dissipation substrate by laminating insulating layers on the front and back of the conductive metal plate to be the connection terminal;
A metal plate exposing step of removing the insulating layer in a part of the high heat dissipation substrate to expose the metal plate;
A connecting terminal forming step of processing the exposed metal plate to form the connecting terminal in which the heat dissipating piece protrudes laterally;
A method for manufacturing a wiring board, comprising:
JP2010128185A 2010-06-03 2010-06-03 Wiring board and manufacturing method thereof Active JP5590713B2 (en)

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US13/152,419 US9888558B2 (en) 2010-06-03 2011-06-03 Wiring substrate and manufacturing method thereof
US14/289,335 US20140268581A1 (en) 2010-06-03 2014-05-28 Wiring substrate and manufacturing method thereof
US14/289,401 US9480142B2 (en) 2010-06-03 2014-05-28 Wiring substrate and manufacturing method thereof
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019040976A (en) * 2017-08-24 2019-03-14 田淵電機株式会社 Conductive fixing member
JP2019197762A (en) * 2018-05-07 2019-11-14 パナソニックIpマネジメント株式会社 Electronic component

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02199894A (en) * 1989-01-30 1990-08-08 Ok Print Haisen Kk Metal printed circuit board
JPH03119793A (en) * 1989-10-02 1991-05-22 Toyo Commun Equip Co Ltd Multi-core hybrid ic
JPH09298344A (en) * 1996-05-08 1997-11-18 Matsushita Electric Ind Co Ltd Wiring board with connecting terminals
JPH10261503A (en) * 1997-03-19 1998-09-29 Teikoku Tsushin Kogyo Co Ltd Self-standing type fixed resistor
JPH10303522A (en) * 1997-04-25 1998-11-13 Matsushita Electric Ind Co Ltd Circuit board
JP2000022303A (en) * 1998-07-06 2000-01-21 Matsushita Electric Ind Co Ltd Metal insert resin molded circuit board and its manufacture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02199894A (en) * 1989-01-30 1990-08-08 Ok Print Haisen Kk Metal printed circuit board
JPH03119793A (en) * 1989-10-02 1991-05-22 Toyo Commun Equip Co Ltd Multi-core hybrid ic
JPH09298344A (en) * 1996-05-08 1997-11-18 Matsushita Electric Ind Co Ltd Wiring board with connecting terminals
JPH10261503A (en) * 1997-03-19 1998-09-29 Teikoku Tsushin Kogyo Co Ltd Self-standing type fixed resistor
JPH10303522A (en) * 1997-04-25 1998-11-13 Matsushita Electric Ind Co Ltd Circuit board
JP2000022303A (en) * 1998-07-06 2000-01-21 Matsushita Electric Ind Co Ltd Metal insert resin molded circuit board and its manufacture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019040976A (en) * 2017-08-24 2019-03-14 田淵電機株式会社 Conductive fixing member
JP7102111B2 (en) 2017-08-24 2022-07-19 ダイヤゼブラ電機株式会社 Conductive fixing member
JP2019197762A (en) * 2018-05-07 2019-11-14 パナソニックIpマネジメント株式会社 Electronic component
JP7209476B2 (en) 2018-05-07 2023-01-20 ミネベアミツミ株式会社 electronic components

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