JP5465918B2 - Noise suppression structure - Google Patents

Noise suppression structure Download PDF

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JP5465918B2
JP5465918B2 JP2009116584A JP2009116584A JP5465918B2 JP 5465918 B2 JP5465918 B2 JP 5465918B2 JP 2009116584 A JP2009116584 A JP 2009116584A JP 2009116584 A JP2009116584 A JP 2009116584A JP 5465918 B2 JP5465918 B2 JP 5465918B2
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涼亮 増田
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Yazaki Corp
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本発明は、昇圧回路部と昇圧用コンデンサとの間をコネクタによって結合する構成におけるノイズ対策構造に関する。   The present invention relates to a noise countermeasure structure in a configuration in which a booster circuit unit and a boosting capacitor are coupled by a connector.

従来、液晶ディスプレイ（以下、ＬＣＤとする）が搭載された配線基板などに設けられるコネクタとしては、配線基板と他の基板や外部機器との間を電気的に接続させるものが知られている（例えば、特許文献１参照）。   Conventionally, as a connector provided on a wiring board or the like on which a liquid crystal display (hereinafter referred to as LCD) is mounted, a connector that electrically connects a wiring board to another board or an external device is known ( For example, see Patent Document 1).

このようなコネクタでは、ＬＣＤの端子が挿入されるＬＣＤ端子挿入部が複数列設けられ、この各ＬＣＤ端子挿入部の一側にはコネクタ端子が設けられている。このコネクタ端子は、配線基板に設けられた昇圧回路部や配線基板外に設けられた昇圧用コンデンサなどに接続される。   In such a connector, a plurality of LCD terminal insertion portions into which LCD terminals are inserted are provided, and a connector terminal is provided on one side of each LCD terminal insertion portion. This connector terminal is connected to a booster circuit section provided on the wiring board, a boosting capacitor provided outside the wiring board, and the like.

特開２００８−１０２３３６号公報JP 2008-102336 A

ところで、各ＬＣＤ端子挿入部の一側にコネクタ端子を設ける構成ではコネクタのサイズが大型化していたため、各ＬＣＤ端子挿入部の一側と他側にそれぞれ交互に（千鳥足状に）コネクタ端子を設けることで、同一側に設けられた隣接するコネクタ端子間のピッチを変えずにコネクタ端子間の反対側にコネクタ端子を設けることができ、コネクタのサイズを小型化させることができる。   By the way, in the configuration in which the connector terminal is provided on one side of each LCD terminal insertion portion, the size of the connector has been increased. Therefore, the connector terminals are provided alternately (in a staggered pattern) on one side and the other side of each LCD terminal insertion portion. Thus, the connector terminals can be provided on the opposite side between the connector terminals without changing the pitch between the adjacent connector terminals provided on the same side, and the size of the connector can be reduced.

しかしながら、千鳥足状にコネクタ端子を設けたコネクタでは、隣接するコネクタ端子間に昇圧用コンデンサを設けようとすると、コネクタ端子−昇圧用コンデンサ−コネクタ端子を結ぶ配線パターンがＬＣＤ端子挿入部を囲むように配置され、昇圧用コンデンサに接続するための配線パターンが長距離となってしまう。このため、昇圧用コンデンサから発生するノイズが長い配線パターンから放射されてしまい、耐ノイズ性能が悪化してしまう懸念があった。   However, in a connector with staggered connector terminals, when a boosting capacitor is provided between adjacent connector terminals, the wiring pattern connecting the connector terminal-boosting capacitor-connector terminal surrounds the LCD terminal insertion portion. The wiring pattern that is disposed and connected to the boosting capacitor becomes a long distance. For this reason, there is a concern that noise generated from the boosting capacitor is radiated from the long wiring pattern and the noise resistance performance is deteriorated.

そこで、この発明は、部品サイズを小型化することができ、耐ノイズ性能を向上させることができるノイズ対策構造の提供を目的としている。   Accordingly, an object of the present invention is to provide a noise countermeasure structure that can reduce the component size and improve the noise resistance performance.

請求項１記載の発明は、第１の配線基板に設けられた昇圧回路部と、第２の配線基板に設けられた昇圧用コンデンサとをコネクタにより電気的に接続するノイズ対策構造であって、前記コネクタは長方形状の筐体からなり、長さ方向に複数列設けられ前記第１の配線基板側に電気的に接続可能な端子挿入部と、この各端子挿入部から幅方向の一側と他側にそれぞれ交互に設けられ前記第２の配線基板側に電気的に接続可能なコネクタ端子とを有し、前記昇圧用コンデンサは、幅方向の同一側で隣接する前記コネクタ端子に電気的に接続され、前記昇圧回路部は、昇圧用コンデンサに接続されたコネクタ端子が位置する前記端子挿入部に電気的に接続され、昇圧用コンデンサに接続されたコネクタ端子の間に位置するコネクタ端子は、前記第２の配線基板側に電気的に接続不能な空き端子であることを特徴とする。   The invention according to claim 1 is a noise countermeasure structure in which a booster circuit portion provided on a first wiring board and a boosting capacitor provided on a second wiring board are electrically connected by a connector, The connector includes a rectangular housing, and is provided with a plurality of rows in the length direction and terminal insertion portions that can be electrically connected to the first wiring board side, and one side in the width direction from each terminal insertion portion. Connector terminals alternately provided on the other side and electrically connectable to the second wiring board side, and the boosting capacitor is electrically connected to the adjacent connector terminal on the same side in the width direction. The boosting circuit portion is electrically connected to the terminal insertion portion where the connector terminal connected to the boosting capacitor is located, and the connector terminal located between the connector terminals connected to the boosting capacitor is: The second Characterized in that the wiring substrate side are electrically connected non vacant terminals.

請求項１のノイズ対策構造は、コネクタ端子が各端子挿入部から幅方向の一側と他側にそれぞれ交互に設けられているので、コネクタのサイズを小型化することができる。また、幅方向の同一側で隣接するコネクタ端子に昇圧用コンデンサが接続されるので、昇圧用コンデンサに接続されるコネクタ端子間のピッチを従来のコネクタ端子間のピッチと同等にすることができる。   In the noise countermeasure structure according to the first aspect, since the connector terminals are alternately provided on one side and the other side in the width direction from each terminal insertion portion, the size of the connector can be reduced. In addition, since the boosting capacitor is connected to the adjacent connector terminal on the same side in the width direction, the pitch between the connector terminals connected to the boosting capacitor can be made equal to the pitch between the conventional connector terminals.

このため、コネクタ端子−昇圧用コンデンサ−コネクタ端子を結ぶ配線パターンを長距離にする必要がなく、昇圧用コンデンサから発生するノイズの配線パターンからの放射を抑制することができる。また、昇圧用コンデンサが位置する部分に設けられた空き端子となるコネクタ端子は、複数のコネクタ端子の一部であるので、コネクタや周辺部材の大きな設計変更を伴うことなく、コネクタのサイズの小型化を維持することができる。   For this reason, it is not necessary to make the wiring pattern connecting the connector terminal-capacitor for boosting-connector terminal long distance, and radiation from the wiring pattern of noise generated from the boosting capacitor can be suppressed. In addition, the connector terminal that is an empty terminal provided in the part where the boosting capacitor is located is a part of the plurality of connector terminals, so the connector size is small without major design changes of the connector and peripheral members. Can be maintained.

従って、部品サイズを小型化することができ、耐ノイズ性能を向上させることができる。   Accordingly, the component size can be reduced and the noise resistance performance can be improved.

本発明の実施の形態に係るコネクタにおけるノイズ対策構造を示す概略図である。It is the schematic which shows the noise countermeasure structure in the connector which concerns on embodiment of this invention. 本発明の実施の形態に係るノイズ対策構造のブロック図である。It is a block diagram of the noise countermeasure structure which concerns on embodiment of this invention. 本発明の実施の形態に係る第２の配線基板上にコネクタを配置したときの平面図である。It is a top view when arrange | positioning a connector on the 2nd wiring board which concerns on embodiment of this invention. 本発明の実施の形態に係るノイズ対策構造の回路図である。It is a circuit diagram of a noise countermeasure structure according to an embodiment of the present invention. 従来の構成における周波数に対するノイズを示す図である。It is a figure which shows the noise with respect to the frequency in the conventional structure. 本発明の実施の形態に係るノイズ対策構造における周波数に対するノイズを示す図である。It is a figure which shows the noise with respect to the frequency in the noise countermeasure structure which concerns on embodiment of this invention.

図１〜図６を用いて本発明の実施の形態に係るノイズ対策構造について説明する。   A noise countermeasure structure according to an embodiment of the present invention will be described with reference to FIGS.

本実施の形態に係るノイズ対策構造は、ＬＣＤ１内に搭載されたＬＣＤドライバ３の第１の配線基板（不図示）に設けられた昇圧回路部５と、ＬＣＤ１外に配置された第２の配線基板７に設けられた昇圧用コンデンサ９とをコネクタとしてのＬＣＤコネクタ１１により電気的に接続する構成に適用されている。また、ＬＣＤコネクタ１１は長方形状の筐体からなり、長さ方向に複数列設けられ第１の配線基板側に電気的に接続可能な端子挿入部１３と、この各端子挿入部１３から幅方向の一側と他側にそれぞれ交互に設けられ第２の配線基板７側に電気的に接続可能なコネクタ端子１５とを有している。   The noise countermeasure structure according to the present embodiment includes a booster circuit unit 5 provided on a first wiring board (not shown) of an LCD driver 3 mounted in the LCD 1 and a second wiring arranged outside the LCD 1. This is applied to a configuration in which a boosting capacitor 9 provided on a substrate 7 is electrically connected by an LCD connector 11 as a connector. Further, the LCD connector 11 is composed of a rectangular housing, and is provided with a plurality of rows in the length direction and is electrically connectable to the first wiring board side, and a width direction from each terminal insertion portion 13. Connector terminals 15 that are alternately provided on one side and the other side and that can be electrically connected to the second wiring board 7 side.

そして、昇圧用コンデンサ９は、幅方向の同一側で隣接するコネクタ端子１５ａ，１５ｂに電気的に接続され、昇圧回路部５は、昇圧用コンデンサ９に接続されたコネクタ端子１５ａ，１５ｂが位置する端子挿入部１３ａ，１３ｂに電気的に接続され、昇圧用コンデンサ９に接続されたコネクタ端子１５ａ，１５ｂの間に位置するコネクタ端子１５ｃは、第２の配線基板７側に電気的に接続不能な空き端子となっている。   The boosting capacitor 9 is electrically connected to the adjacent connector terminals 15a and 15b on the same side in the width direction, and the boosting circuit unit 5 has the connector terminals 15a and 15b connected to the boosting capacitor 9 positioned therein. The connector terminal 15c that is electrically connected to the terminal insertion portions 13a and 13b and located between the connector terminals 15a and 15b connected to the boosting capacitor 9 cannot be electrically connected to the second wiring board 7 side. It is an empty terminal.

図１〜図４に示すように、ＬＣＤ１は、ＬＣＤ表示部１７が設けられ、車両の速度計や燃料計などの部分に設けられる情報表示手段となっている。このＬＣＤ１内にはＬＣＤドライバ３が収容され、ＬＣＤドライバ３には第１の配線基板に設けられた昇圧回路部５や駆動信号処理部１９などが設けられている。   As shown in FIGS. 1 to 4, the LCD 1 is provided with an LCD display unit 17 and serves as an information display unit provided in a vehicle speedometer, fuel gauge, and the like. An LCD driver 3 is accommodated in the LCD 1, and the LCD driver 3 is provided with a booster circuit unit 5 and a drive signal processing unit 19 provided on the first wiring board.

昇圧回路部５は、第１の配線基板上に設けられ、ＬＣＤ１に設けられたＬＣＤ端子２１と電気的に接続されている。この昇圧回路部５での状況は、第１の配線基板上に設けられた駆動信号処理部１９に伝達される。駆動信号処理部１９は、ＬＣＤ端子２１とＬＣＤコネクタ１１とを介してＬＣＤ１外に配置されたＣＰＵ２３に電気的に接続され、ＣＰＵ２３へ昇圧回路部５の情報を伝達すると共にＣＰＵ２３からの制御情報が伝達される。このようなＬＣＤ１内に設けられた昇圧回路部５は、ＬＣＤコネクタ１１を介して昇圧用コンデンサ９に電気的に接続され、昇圧用コンデンサ９によって昇圧される。   The booster circuit unit 5 is provided on the first wiring board and is electrically connected to the LCD terminal 21 provided in the LCD 1. The situation in the booster circuit unit 5 is transmitted to the drive signal processing unit 19 provided on the first wiring board. The drive signal processing unit 19 is electrically connected to the CPU 23 disposed outside the LCD 1 via the LCD terminal 21 and the LCD connector 11, and transmits the information of the booster circuit unit 5 to the CPU 23 and receives control information from the CPU 23. Communicated. The booster circuit unit 5 provided in the LCD 1 is electrically connected to the boosting capacitor 9 via the LCD connector 11 and boosted by the boosting capacitor 9.

昇圧用コンデンサ９は、ＬＣＤ１外に配置された第２の配線基板７上に設けられている。この昇圧用コンデンサ９は、第２の配線基板７に設けられたランド２５と配線パターン２７によってＬＣＤコネクタ１１のコネクタ端子１５ａ，１５ｂと電気的に接続されている。このコネクタ端子１５ａ，１５ｂが位置する部分の端子挿入部１３ａ，１３ｂに昇圧回路部５に接続されたＬＣＤ端子２１が挿入されることにより、昇圧用コンデンサ９と昇圧回路部５とが電気的に接続される。このように昇圧回路部５と昇圧用コンデンサ９とは、ＬＣＤコネクタ１１を介して電気的に接続されている。   The step-up capacitor 9 is provided on the second wiring board 7 arranged outside the LCD 1. The boosting capacitor 9 is electrically connected to the connector terminals 15 a and 15 b of the LCD connector 11 by lands 25 and wiring patterns 27 provided on the second wiring board 7. By inserting the LCD terminal 21 connected to the booster circuit unit 5 into the terminal insertion portions 13a and 13b where the connector terminals 15a and 15b are located, the booster capacitor 9 and the booster circuit unit 5 are electrically connected. Connected. Thus, the booster circuit unit 5 and the booster capacitor 9 are electrically connected via the LCD connector 11.

ＬＣＤコネクタ１１は、長方形状の筐体からなり、複数の端子挿入部１３と、複数のコネクタ端子１５とを有している。複数の端子挿入部１３は、筐体の長さ方向に複数列設けられ、ＬＣＤ１のＬＣＤ端子２１が挿入されてＬＣＤ１とＬＣＤコネクタ１１とが電気的に接続される。なお、ＬＣＤ１のＬＣＤ端子２１には、ＬＣＤ１内に設けられたＬＣＤドライバ３などと電気的に接続されていない空き端子があり、この空き端子が端子挿入部１３に挿入されている部位はＬＣＤ１とＬＣＤコネクタ１１とが電気的に接続されない。   The LCD connector 11 is formed of a rectangular housing and includes a plurality of terminal insertion portions 13 and a plurality of connector terminals 15. The plurality of terminal insertion portions 13 are provided in a plurality of rows in the length direction of the housing, and the LCD terminal 21 of the LCD 1 is inserted to electrically connect the LCD 1 and the LCD connector 11. The LCD terminal 21 of the LCD 1 has a vacant terminal that is not electrically connected to the LCD driver 3 or the like provided in the LCD 1, and the portion where the vacant terminal is inserted into the terminal insertion portion 13 is the LCD 1. The LCD connector 11 is not electrically connected.

複数のコネクタ端子１５は、各端子挿入部１３から筐体の幅方向の一側と他側にそれぞれ交互に千鳥足状に設けられている。複数のコネクタ端子１５のうち同一方向（筐体の幅方向の一側、もしくは他側）に設けられたコネクタ端子（例えば、１５ａ，１５ｂなど）は、隣接するコネクタ端子間のピッチが従来の千鳥足状にコネクタ端子が設けられていないコネクタの隣接するコネクタ端子間のピッチと同等に設定されている。このため、従来のコネクタに対応されているＬＣＤのＬＣＤ端子にも、ＬＣＤコネクタ１１の端子挿入部１３とコネクタ端子１５とを対応させることができ、ＬＣＤコネクタ１１の汎用性を向上させることができる。   The plurality of connector terminals 15 are alternately provided in a staggered pattern from each terminal insertion portion 13 on one side and the other side in the width direction of the housing. The connector terminals (for example, 15a, 15b, etc.) provided in the same direction (one side or the other side in the width direction of the housing) among the plurality of connector terminals 15 have a pitch between adjacent connector terminals of the conventional staggered feet. The pitch is set to be equal to the pitch between adjacent connector terminals of a connector that is not provided with a connector terminal. For this reason, the terminal insertion part 13 of the LCD connector 11 and the connector terminal 15 can be made to correspond also to the LCD terminal of LCD corresponding to the conventional connector, and the versatility of the LCD connector 11 can be improved. .

このようなＬＣＤコネクタ１１では、幅方向の同一側で隣接するコネクタ端子１５ａ，１５ｂに昇圧用コンデンサ９が電気的に接続される。また、コネクタ端子１５ａ，１５ｂが位置する端子挿入部１３ａ，１３ｂに昇圧回路部５が電気的に接続され、昇圧用コンデンサ９と昇圧回路部５とがＬＣＤコネクタ１１を介して電気的に接続される。この状態では、コネクタ端子１５ａ，１５ｂの間に位置してコネクタ端子１５ａ，１５ｂと筐体の幅方向の反対側に設けられたコネクタ端子１５ｃは、第２の配線基板７に電気的に接続されない空き端子となっている。なお、空き端子となっているコネクタ端子１５ｃが位置する端子挿入部１３ｃに挿入されるＬＣＤ端子２１も、第１の配線基板には電気的に接続されずに空き端子となっている。   In such an LCD connector 11, the boosting capacitor 9 is electrically connected to adjacent connector terminals 15a and 15b on the same side in the width direction. Further, the booster circuit unit 5 is electrically connected to the terminal insertion portions 13 a and 13 b where the connector terminals 15 a and 15 b are located, and the booster capacitor 9 and the booster circuit unit 5 are electrically connected via the LCD connector 11. The In this state, the connector terminal 15c located between the connector terminals 15a and 15b and provided on the opposite side of the housing in the width direction is not electrically connected to the second wiring board 7. It is an empty terminal. Note that the LCD terminal 21 inserted into the terminal insertion portion 13c where the connector terminal 15c that is an empty terminal is located is also an empty terminal without being electrically connected to the first wiring board.

ここで、図５，６にコネクタ端子１５ａとコネクタ端子１５ｃの間に端子挿入部１３を囲むようにランドと配線パターンによって昇圧用コンデンサ９を接続したとき（図５）と、コネクタ端子１５ａ，１５ｂに昇圧用コンデンサ９を接続し、コネクタ端子１５ａ，１５ｂの間に位置するコネクタ端子１５ｃを空き端子としたとき（図６）の周波数に対するノイズを示す。なお、上部に位置する線は周波数のピーク時の平均値であり、下部に位置する線は周波数の全体の平均値である。また、上部の線側に位置する線をノイズのリミット値とする。このように、コネクタ端子１５ａ，１５ｂに昇圧用コンデンサ９を接続し、コネクタ端子１５ａ，１５ｂの間に位置するコネクタ端子１５ｃを空き端子とすることにより、ノイズの発生を抑制することができる。   5 and 6, when the boosting capacitor 9 is connected by the land and the wiring pattern so as to surround the terminal insertion portion 13 between the connector terminal 15a and the connector terminal 15c (FIG. 5), the connector terminals 15a and 15b are connected. FIG. 6 shows noise with respect to frequency when the step-up capacitor 9 is connected to the connector terminal 15c and the connector terminal 15c located between the connector terminals 15a and 15b is an empty terminal (FIG. 6). The line located at the top is the average value at the peak of the frequency, and the line located at the bottom is the average value of the entire frequency. Further, a line located on the upper line side is set as a noise limit value. In this way, by connecting the boosting capacitor 9 to the connector terminals 15a and 15b and using the connector terminal 15c positioned between the connector terminals 15a and 15b as an empty terminal, the generation of noise can be suppressed.

このようなノイズ対策構造では、コネクタ端子１５が各端子挿入部１３から幅方向の一側と他側にそれぞれ交互に設けられているので、ＬＣＤコネクタ１１のサイズを小型化することができる。また、幅方向の同一側で隣接するコネクタ端子１５ａ，１５ｂに昇圧用コンデンサ９が接続されるので、昇圧用コンデンサ９に接続されるコネクタ端子１５ａ，１５ｂ間のピッチを従来のコネクタ端子間のピッチと同等にすることができる。   In such a noise countermeasure structure, the connector terminals 15 are alternately provided on the one side and the other side in the width direction from the respective terminal insertion portions 13, so that the size of the LCD connector 11 can be reduced. Further, since the boosting capacitor 9 is connected to the adjacent connector terminals 15a and 15b on the same side in the width direction, the pitch between the connector terminals 15a and 15b connected to the boosting capacitor 9 is set to the pitch between the conventional connector terminals. Can be equivalent.

このため、コネクタ端子１５ａ−昇圧用コンデンサ９−コネクタ端子１５ｂを結ぶ配線パターン２７を長距離にする必要がなく、昇圧用コンデンサ９から発生するノイズの配線パターン２７からの放射を抑制することができる。また、昇圧用コンデンサ９が位置する部分に設けられた空き端子となるコネクタ端子１５ｃは、複数のコネクタ端子１５の一部であるので、ＬＣＤコネクタ１１やＬＣＤ１などの周辺部材の大きな設計変更を伴うことなく、ＬＣＤコネクタ１１のサイズの小型化を維持することができる。   For this reason, it is not necessary to make the wiring pattern 27 connecting the connector terminal 15a, the boosting capacitor 9 and the connector terminal 15b long, and radiation of noise generated from the boosting capacitor 9 from the wiring pattern 27 can be suppressed. . In addition, the connector terminal 15c, which is an empty terminal provided in the portion where the boosting capacitor 9 is located, is a part of the plurality of connector terminals 15, and thus involves a large design change of peripheral members such as the LCD connector 11 and the LCD1. Therefore, the size of the LCD connector 11 can be kept small.

従って、部品サイズを小型化することができ、耐ノイズ性能を向上させることができる。   Accordingly, the component size can be reduced and the noise resistance performance can be improved.

なお、本発明の実施の形態に係るノイズ対策構造では、ＬＣＤ内に設けられた昇圧回路部とＬＣＤ外に設けられた昇圧用コンデンサとをコネクタによって接続した構成に適用しているが、これに限らず、昇圧回路部と昇圧用コンデンサとをコネクタによって接続する構成であれば、どのような装置にも適用することができる。   The noise countermeasure structure according to the embodiment of the present invention is applied to a configuration in which a booster circuit unit provided in the LCD and a boosting capacitor provided outside the LCD are connected by a connector. The present invention is not limited to this, and can be applied to any device as long as the booster circuit unit and the booster capacitor are connected by a connector.

５…昇圧回路部
７…第２の配線基板
９…昇圧用コンデンサ
１１…ＬＣＤコネクタ（コネクタ）
１３…端子挿入部
１５…コネクタ端子 DESCRIPTION OF SYMBOLS 5 ... Boosting circuit part 7 ... 2nd wiring board 9 ... Boosting capacitor 11 ... LCD connector (connector)
13 ... Terminal insertion part 15 ... Connector terminal

Claims (1)

第１の配線基板に設けられた昇圧回路部と、第２の配線基板に設けられた昇圧用コンデンサとをコネクタにより電気的に接続するノイズ対策構造であって、
前記コネクタは長方形状の筐体からなり、長さ方向に複数列設けられ前記第１の配線基板側に電気的に接続可能な端子挿入部と、この各端子挿入部から幅方向の一側と他側にそれぞれ交互に設けられ前記第２の配線基板側に電気的に接続可能なコネクタ端子とを有し、
前記昇圧用コンデンサは、幅方向の同一側で隣接する前記コネクタ端子に電気的に接続され、前記昇圧回路部は、昇圧用コンデンサに接続されたコネクタ端子が位置する前記端子挿入部に電気的に接続され、
昇圧用コンデンサに接続されたコネクタ端子の間に位置するコネクタ端子は、前記第２の配線基板側に電気的に接続不能な空き端子であることを特徴とするノイズ対策構造。 A noise countermeasure structure in which a booster circuit portion provided on a first wiring board and a boosting capacitor provided on a second wiring board are electrically connected by a connector,
The connector includes a rectangular housing, and is provided with a plurality of rows in the length direction and terminal insertion portions that can be electrically connected to the first wiring board side, and one side in the width direction from each terminal insertion portion. A connector terminal provided alternately on the other side and electrically connectable to the second wiring board side;
The boosting capacitor is electrically connected to the connector terminal adjacent on the same side in the width direction, and the boosting circuit unit is electrically connected to the terminal insertion portion where the connector terminal connected to the boosting capacitor is located. Connected,
The noise countermeasure structure, wherein the connector terminals located between the connector terminals connected to the boosting capacitor are empty terminals that cannot be electrically connected to the second wiring board side.
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