JP2021141666A

JP2021141666A - Switching power supply and illumination device

Info

Publication number: JP2021141666A
Application number: JP2020035889A
Authority: JP
Inventors: 洋山下; Hiroshi Yamashita
Original assignee: Daiko Electric Co Ltd
Current assignee: Daiko Electric Co Ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2021-09-16
Anticipated expiration: 2040-03-03
Also published as: JP7455615B2

Abstract

To provide a switching power supply and an illumination device capable of achieving noise reduction effect similar to a twist wiring pattern using no expensive multilayer substrate.SOLUTION: A switching power supply 40 using a single layer substrate 10 is formed on the single layer substrate 10. A current path through which a reciprocating current flows is twisted by arranging a jumper unit so as to cross a printed wiring unit where a pair of reciprocating currents flow.SELECTED DRAWING: Figure 2

Description

この発明は、照明装置等の電源として使用されるスイッチング電源、及びこのスイッチング電源を使用した照明装置に関する。 The present invention relates to a switching power supply used as a power source for a lighting device or the like, and a lighting device using the switching power supply.

スイッチング電源には、スイッチング用半導体の電圧変動部分からなるスイッチング周波数(数１０ｋＨｚ〜数１００ｋＨｚ)に同期したＲ／Ｎ成分ノイズが発生する。このノイズが電源外部へ流出するのを抑えるため、入力もしくは出力にフィルタを構成することが一般的で、ノイズ対策が高価になっていた。 In the switching power supply, R / N component noise synchronized with the switching frequency (several tens of kHz to several hundreds of kHz) composed of the voltage fluctuation portion of the switching semiconductor is generated. In order to prevent this noise from flowing out to the outside of the power supply, it is common to configure a filter on the input or output, and noise countermeasures have become expensive.

入出力線をツイスト構造にするとノイズの流出を防止でき、フィルタを簡素化できることは知られている(例えば特許文献１)。しかし、入出力線をツイスト構造にすると、工数が高くなる欠点がある。 It is known that if the input / output lines have a twisted structure, noise can be prevented from flowing out and the filter can be simplified (for example, Patent Document 1). However, if the input / output lines have a twisted structure, there is a drawback that man-hours are increased.

また、特許文献２の特に図５には、印刷配線基板上で配線パターンをツイストさせることが記載されている。 Further, in particular, FIG. 5 of Patent Document 2 describes that the wiring pattern is twisted on the printed wiring board.

特開２００４−３２７３５３号公報Japanese Unexamined Patent Publication No. 2004-327353 特開平１１−３０６７０３号公報JP-A-11-306703

しかしながら、特許文献２では、段落００２５に記載されているように、パターンが２層になるために製造方法が複雑になり、高価な多層パターン基板の使用を余儀なくされている。 However, in Patent Document 2, as described in paragraph 0025, since the pattern has two layers, the manufacturing method becomes complicated, and an expensive multilayer pattern substrate is obliged to be used.

この発明は、このような背景に鑑みてなされたものであって、高価な多層基板を使用することなく、ツイスト配線パターンと同様のノイズ低減効果を実現できるスイッチング電源及び照明装置の提供を目的とする。 The present invention has been made in view of such a background, and an object of the present invention is to provide a switching power supply and a lighting device capable of realizing a noise reduction effect similar to a twisted wiring pattern without using an expensive multilayer substrate. do.

上記目的は、以下の手段によって達成される。
（１）単層基板を使用するスイッチング電源であって、前記単層基板に形成され、対となる往復電流が流れる印刷配線部に交差するように、ジャンパー部を配置することにより、前記往復電流が流れる電流経路をツイストさせたことを特徴とするスイッチング電源。
（２）前記単層基板の一面側に前記印刷配線部が形成され、前記ジャンパー部は、前記単層基板の他面側に配置されている前項１に記載のスイッチング電源。
（３）前記単層基板の一面側に前記印刷配線部が形成され、前記ジャンパー部も前記印刷配線部と同じ前記単層基板の一面側に配置されている前項１に記載のスイッチング電源。
（４）前記ジャンパー部は、前記単層基板とは別体の導電部品から構成されている前項２または３に記載のスイッチング電源。
（５）前記ジャンパー部は、印刷配線によって形成されている前項２に記載のスイッチング電源。
（６）商用電源から供給される電力を所定の電力に変換する前項１〜５のいずれかに記載のスイッチング電源と、前記スイッチング電源によって変換された電力を受けて駆動される光源と、を備えたことを特徴とする照明装置。 The above object is achieved by the following means.
(1) A switching power supply that uses a single-layer substrate, and by arranging a jumper portion so as to intersect a printed wiring portion formed on the single-layer substrate and through which a pair of reciprocating currents flow, the reciprocating current is generated. A switching power supply characterized by twisting the current path through which the current flows.
(2) The switching power supply according to item 1, wherein the printed wiring portion is formed on one surface side of the single-layer substrate, and the jumper portion is arranged on the other surface side of the single-layer substrate.
(3) The switching power supply according to item (1) above, wherein the printed wiring portion is formed on one surface side of the single-layer substrate, and the jumper portion is also arranged on one surface side of the single-layer substrate which is the same as the printed wiring portion.
(4) The switching power supply according to item 2 or 3 above, wherein the jumper portion is composed of a conductive component that is separate from the single-layer substrate.
(5) The switching power supply according to item 2 above, wherein the jumper portion is formed by printed wiring.
(6) The switching power supply according to any one of items 1 to 5 above, which converts the electric power supplied from the commercial power supply into a predetermined electric power, and a light source driven by receiving the electric power converted by the switching power supply. A lighting device characterized by that.

前項（１）に記載の発明によれば、単層基板に形成され、対となる往復電流が流れる印刷配線部に交差するように、ジャンパー部を配置することにより、往復電流が流れる電流経路をツイストさせたから、高価な多層基板を使用するのではなく、単層基板を使用するものでありながら、ノイズ低減効果を有するスイッチング電源となる。 According to the invention described in the previous section (1), by arranging the jumper portion so as to intersect the printed wiring portion formed on the single-layer substrate and through which the paired reciprocating current flows, the current path through which the reciprocating current flows can be established. Since it is twisted, it is a switching power supply that has a noise reduction effect while using a single-layer board instead of using an expensive multi-layer board.

前項（２）に記載の発明によれば、単層基板の一面側に、対となる往復電流が流れる印刷配線部が形成され、ジャンパー部は、単層基板の他面側に配置されているから、簡素な構成で、往復電流が流れる電流経路をツイストさせることができる。 According to the invention described in the previous section (2), a printed wiring portion through which a pair of reciprocating currents flows is formed on one surface side of the single-layer substrate, and a jumper portion is arranged on the other surface side of the single-layer substrate. Therefore, it is possible to twist the current path through which the reciprocating current flows with a simple configuration.

前項（３）に記載の発明によれば、単層基板の一面側に、対となる往復電流が流れる印刷配線部が形成され、ジャンパー部も印刷配線部と同じ単層基板の一面側に配置されているから、単層基板の片面のみを使用して、往復電流が流れる電流経路をツイストさせることができる。 According to the invention described in the previous section (3), a printed wiring portion through which a pair of reciprocating currents flows is formed on one surface side of the single-layer substrate, and a jumper portion is also arranged on one surface side of the same single-layer substrate as the printed wiring portion. Therefore, it is possible to twist the current path through which the reciprocating current flows by using only one side of the single-layer substrate.

前項（４）に記載の発明によれば、ジャンパー部を、単層基板とは別体の導電部品で構成することができる。 According to the invention described in the preceding paragraph (4), the jumper portion can be composed of a conductive component that is separate from the single-layer substrate.

前項（５）に記載の発明によれば、ジャンパー部を印刷配線によって形成することができる。 According to the invention described in the preceding paragraph (5), the jumper portion can be formed by printed wiring.

前項（６）に記載の発明によれば、スイッチング電源によって発生したノイズのスイッチング電源からの流出を抑制した照明装置となる。 According to the invention described in the previous section (6), the lighting device suppresses the outflow of noise generated by the switching power supply from the switching power supply.

この発明の一実施形態に係るスイッチング電源が用いられた照明装置の構成図である。It is a block diagram of the lighting apparatus which used the switching power supply which concerns on one Embodiment of this invention. スイッチング電源に用いられている回路基板の入力側の一部を、基板の一面側から見た図である。It is a figure which looked at a part of the input side of the circuit board used for a switching power supply from one side of the board. 図２の一部を拡大して示す図である。It is a figure which shows the part of FIG. 2 enlarged. 基板を他面側から見た図である。It is the figure which looked at the substrate from the other side. 図２のＶ−Ｖ線断面図である。FIG. 2 is a sectional view taken along line VV of FIG. 図２のＶＩ−ＶＩ線断面図である。FIG. 2 is a sectional view taken along line VI-VI of FIG. 図２の回路基板における電流経路を示す図である。It is a figure which shows the current path in the circuit board of FIG. 図２〜図７に示した実施形態の変形例を示すもので、スイッチング電源に用いられている回路基板の入力側の一部を基板の一面側から見た図である。2 shows a modified example of the embodiment shown in FIGS. 2 to 7, and is a view of a part of the input side of the circuit board used for the switching power supply as viewed from one side of the board. この発明のさらに他の実施形態を示すもので、スイッチング電源に用いられている回路基板の入力側の一部を、基板の一面側から見た図である。Another embodiment of the present invention is shown, and is a view of a part of the input side of the circuit board used for the switching power supply as viewed from one side of the board. 図９のＸ−Ｘ線断面図である。9 is a cross-sectional view taken along line XX of FIG. 図９のＸＩ−ＸＩ線断面図である。FIG. 9 is a cross-sectional view taken along the line XI-XI of FIG. 図９〜図１１に示した実施形態の変形例を示すもので、スイッチング電源に用いられている回路基板の入力側の一部を基板の一面側から見た図である。9 is a modification of the embodiment shown in FIGS. 9 to 11, and is a view of a part of the input side of the circuit board used for the switching power supply as viewed from one side of the board.

以下、この発明の実施形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１はこの発明の一実施形態に係るスイッチング電源が搭載された照明装置の構成図である。この装置は、商用電源１に電源スイッチ２を介して並列に接続されたフィルタユニット３と、フィルタユニット３の出力側において２本の接続ライン７１、７２を介して接続されたスイッチング電源４と、スイッチング電源４の出力側に接続されたフィルタユニット５と、LED等の光源からなる負荷６を備えている。 FIG. 1 is a configuration diagram of a lighting device equipped with a switching power supply according to an embodiment of the present invention. This device includes a filter unit 3 connected in parallel to the commercial power supply 1 via a power switch 2, and a switching power supply 4 connected to the commercial power supply 1 via two connection lines 71 and 72 on the output side of the filter unit 3. It includes a filter unit 5 connected to the output side of the switching power supply 4, and a load 6 composed of a light source such as an LED.

図２はスイッチング電源４の回路基板の入力側の一部を示す図である。スイッチング電源４は単層基板１０を使用しており、この単層基板１０上に銅等の導電性材料からなる印刷配線パターンが形成されるとともに、スイッチング電源４を構成する回路部品が実装されている。 FIG. 2 is a diagram showing a part of the input side of the circuit board of the switching power supply 4. The switching power supply 4 uses a single-layer board 10, and a printed wiring pattern made of a conductive material such as copper is formed on the single-layer board 10, and circuit components constituting the switching power supply 4 are mounted. There is.

図２に示す印刷配線パターンは、フィルタユニット３からの２本の接続ライン７１と７２と接続されており、一方の接続ライン７１から入力された往路電流が印刷配線パターンの一部を通ってスイッチング電源の回路部品へ流れ、スイッチング電源の回路部品から出力された復路電流が印刷配線パターンの別の一部を通って接続ライン７２へと流れるようになっている。あるいは逆に、他方の接続ライン７２から印刷配線パターンを通って入力され、一方の接続ライン７１から出力されることもあるが、いずれの場合も、印刷配線パターンには対となる往路の電流経路と復路の電流経路が形成されている。 The printed wiring pattern shown in FIG. 2 is connected to two connection lines 71 and 72 from the filter unit 3, and the outward current input from one of the connection lines 71 is switched through a part of the printed wiring pattern. It flows to the circuit component of the power supply, and the return current output from the circuit component of the switching power supply flows to the connection line 72 through another part of the printed wiring pattern. Alternatively, conversely, it may be input from the other connection line 72 through the print wiring pattern and output from one connection line 71. In either case, the printed wiring pattern has a pair of outbound current paths. And the current path of the return path is formed.

この実施形態では、往路の電流経路と復路の電流経路が捻れたツイスト状態に形成されている。具体的には、基板１０の表面には、接続ライン７１側と接続され基板１０の幅方向の一端側において図２の左右方向に延びる第１配線部１１と、接続ライン７２側と接続され基板１０の幅方向の他端側において第１配線部１１と平行に第１配線部１１の長さの途中の位置まで左右方向に延びる第２配線部１２と、第２配線部１２の右端部に連続し、第１配線部１１の右側前方の位置まで斜めに延びる第３配線部１３と、基板１０の幅方向の他端側において第１配線部１１の右端部と同位置を開始端部とし、第３配線部１３と間隔を開けて平行に延びる第４配線部１４と、基板１０の幅方向の他端側において第３配線部１３の右端部と同位置を開始端部とし、第４配線部１４と間隔を開けて平行に延びる第５配線部１５と、基板１０の幅方向の他端側において第４配線部１４の右端部と同位置を開始端部とし、第５配線部１５と間隔を開けて平行に延びる第６配線部１６と、基板１０の幅方向の他端側において第５配線部１５の右端部と同位置を開始端部とし、第６配線部１６と間隔を開けて平行に延びる第７配線部１７と、基板１０の幅方向の一端側において第７配線部１５の右端部に連続して左右方向に伸びる第８配線部１８と、基板１０の幅方向の他端側において第６配線部１６の右端部と同位置を開始端部とし、第８配線部１８と平行に左右方向に伸びる第９配線部１９が、それぞれ形成されている。 In this embodiment, the outward current path and the return current path are formed in a twisted state. Specifically, on the surface of the substrate 10, a first wiring portion 11 connected to the connection line 71 side and extending in the left-right direction of FIG. 2 on one end side in the width direction of the substrate 10 and a substrate connected to the connection line 72 side. On the other end side in the width direction of 10, the second wiring portion 12 extending in the left-right direction to a position in the middle of the length of the first wiring portion 11 parallel to the first wiring portion 11 and the right end portion of the second wiring portion 12 The start end is the same position as the right end of the first wiring 11 on the other end side in the width direction of the third wiring portion 13 that is continuous and extends diagonally to the position in front of the right side of the first wiring portion 11. The fourth wiring portion 14 extending in parallel with the third wiring portion 13 and the other end side in the width direction of the substrate 10 have the same position as the right end portion of the third wiring portion 13 as the start end portion. The fifth wiring portion 15 extending in parallel with the wiring portion 14 at a distance, and the fifth wiring portion 15 having the same position as the right end portion of the fourth wiring portion 14 on the other end side in the width direction of the substrate 10 as the start end portion. The 6th wiring portion 16 extending in parallel with the 6th wiring portion 16 and the other end side in the width direction of the substrate 10 are set at the same position as the right end portion of the 5th wiring portion 15 as the start end portion, and the distance from the 6th wiring portion 16 is set. A seventh wiring portion 17 that opens and extends in parallel, an eighth wiring portion 18 that extends in the left-right direction continuously to the right end portion of the seventh wiring portion 15 on one end side in the width direction of the substrate 10, and a width direction of the substrate 10. A ninth wiring portion 19 extending in the left-right direction in parallel with the eighth wiring portion 18 is formed at the same position as the right end portion of the sixth wiring portion 16 on the other end side.

また、第１配線部１１の右端部、第３配線部１３の右端部、第４配線部１４〜第６配線部１６の両端部、第７配線部１７の左端部、第９配線部１９の左端部には、図３に基板１０の一部を拡大して示すように、それぞれ径大部１４ａ、１６ａ、・・・が形成されるとともに、径大部１４ａ、１６ａ、・・・の中心には基板１０を厚さ方向に貫通するスルーホール２１が形成されている。 Further, the right end of the first wiring portion 11, the right end of the third wiring portion 13, both ends of the fourth wiring portion 14 to the sixth wiring portion 16, the left end portion of the seventh wiring portion 17, and the ninth wiring portion 19. Large diameter portions 14a, 16a, ... Are formed at the left end portion, respectively, as shown by enlarging a part of the substrate 10 in FIG. 3, and the centers of the large diameter portions 14a, 16a, ... Is formed with a through hole 21 that penetrates the substrate 10 in the thickness direction.

一方、図４に示すように、基板１０の裏面には、基板表面の２個の配線部を接続するための複数のジャンパー部３１〜３５が配置されている。この実施形態では、ジャンパー部３１〜３５は、基板１０とは別体のジャンパー抵抗（抵抗ゼロオーム）と称されるような導電部品から構成されている。具体的には、第１配線部１１の右端部と第４配線部１４の左端部を接続するための第１ジャンパー部３１と、第３配線部１３の右端部と第５配線部１５の左端部を接続するための第２ジャンパー部３２と、第４配線部１４の右端部と第６配線部１６の左端部を接続するための第３ジャンパー部３２と、第５配線部１５の右端部と第７配線部１７の左端部を接続するための第４ジャンパー部３４と、第６配線部１６の右端部と第９配線部１９の左端部を接続するための第５ジャンパー部３５が、それぞれ配置されている。 On the other hand, as shown in FIG. 4, a plurality of jumper portions 31 to 35 for connecting the two wiring portions on the surface of the substrate are arranged on the back surface of the substrate 10. In this embodiment, the jumper portions 31 to 35 are composed of a conductive component called a jumper resistor (resistance zero ohm), which is separate from the substrate 10. Specifically, the first jumper portion 31 for connecting the right end portion of the first wiring portion 11 and the left end portion of the fourth wiring portion 14, the right end portion of the third wiring portion 13, and the left end of the fifth wiring portion 15 The second jumper portion 32 for connecting the portions, the third jumper portion 32 for connecting the right end portion of the fourth wiring portion 14 and the left end portion of the sixth wiring portion 16, and the right end portion of the fifth wiring portion 15. The fourth jumper portion 34 for connecting the left end portion of the seventh wiring portion 17 and the fifth jumper portion 35 for connecting the right end portion of the sixth wiring portion 16 and the left end portion of the ninth wiring portion 19 Each is arranged.

また、図４及び図５の各断面図に示すように、各ジャンパー部３１〜３５の端部にも貫通穴２２が形成され、基板１０のスルーホール２１と対応するジャンパー部３１〜３５の貫通穴２２に、ハンダ４０が充填されて、各配線部と各ジャンパー部３１〜３５とが電気的、物理的に接続されている。 Further, as shown in the cross-sectional views of FIGS. 4 and 5, through holes 22 are also formed at the ends of the jumper portions 31 to 35, and the through holes 21 of the substrate 10 and the jumper portions 31 to 35 corresponding to the through holes 21 are penetrated. The holes 22 are filled with solder 40, and each wiring portion and each jumper portion 31 to 35 are electrically and physically connected.

このような各配線部１１〜１９とジャンパー部３１〜３５との接続状態では、図７に回路図で示すように、接続ライン７１→第１配線部１１→第１ジャンパー部３１→第４配線部１４→第３ジャンパー部３３→第６配線部１６→第５ジャンパー部３５→第９配線部１９→スイッチング用半導体を含む回路部品４００へと至る第１電流経路と、回路部品４００→第８配線部１８→第７配線部１７→第４ジャンパー部３４→第５配線部１５→第２ジャンパー部３２→第３配線部１３→第２配線部１２→接続ライン７２へと至る第２電流経路の２つの電流経路が形成され、各電流経路には回路部品４００への往路電流と、回路部品４００からの復路電流が対になって流れるようになっている。 In such a connected state between the wiring portions 11 to 19 and the jumper portions 31 to 35, as shown in the circuit diagram in FIG. 7, the connection line 71 → the first wiring portion 11 → the first jumper portion 31 → the fourth wiring. Section 14 → 3rd jumper section 33 → 6th wiring section 16 → 5th jumper section 35 → 9th wiring section 19 → 1st current path leading to circuit component 400 including switching semiconductor, and circuit component 400 → 8th Wiring section 18 → 7th wiring section 17 → 4th jumper section 34 → 5th wiring section 15 → 2nd jumper section 32 → 3rd wiring section 13 → 2nd wiring section 12 → 2nd current path to connection line 72 Two current paths are formed, and the outbound current to the circuit component 400 and the return current from the circuit component 400 flow in pairs in each current path.

そして、２つの電流経路において、基板１０の表裏面で第１ジャンパー部３１と第３配線部１３が交差し、第２ジャンパー部３２と第４配線部１４が交差し、第３ジャンパー部３３と第５配線部１５が交差し、第４ジャンパー部３４と第６配線部１６が交差し、第５ジャンパー部３５と第７配線部１７が交差した状態となっている。従って、往路の電流経路と復路の電流経路が捻れたツイスト状態に形成されており、このツイスト状態の電流経路を往復電流が対向して流れる結果、回路部品４００に含まれるスイッチング用半導体の電圧変動部分からなるスイッチング周波数に同期したＲ／Ｎ成分ノイズが発生しても、このノイズを抑制でき、接続ライン７１及び接続ライン７２を通じて商用電源２側に流出するのを抑制できる。このため、図１に示した照明装置におけるフィルタユニット３を小型化することができる。しかも、基板１０は単相基板であって高価な多層基板を使用しないから、安価である。 Then, in the two current paths, the first jumper portion 31 and the third wiring portion 13 intersect, the second jumper portion 32 and the fourth wiring portion 14 intersect, and the third jumper portion 33 and the front and back surfaces of the substrate 10. The fifth wiring portion 15 intersects, the fourth jumper portion 34 and the sixth wiring portion 16 intersect, and the fifth jumper portion 35 and the seventh wiring portion 17 intersect. Therefore, the outbound current path and the inbound current path are formed in a twisted state, and as a result of the reciprocating current flowing in opposition to the twisted current path, the voltage fluctuation of the switching semiconductor included in the circuit component 400 Even if R / N component noise synchronized with the switching frequency composed of the parts is generated, this noise can be suppressed, and the outflow to the commercial power supply 2 side through the connection line 71 and the connection line 72 can be suppressed. Therefore, the filter unit 3 in the lighting device shown in FIG. 1 can be miniaturized. Moreover, since the substrate 10 is a single-phase substrate and does not use an expensive multilayer substrate, it is inexpensive.

図８は、図２〜図７に示した実施形態の変形例を示すもので、図２と同様に、スイッチング電源４の回路基板の入力側の一部を示す図である。 FIG. 8 shows a modified example of the embodiment shown in FIGS. 2 to 7, and is a diagram showing a part of the input side of the circuit board of the switching power supply 4 as in FIG. 2.

この実施形態では、基板１０の表面に形成された印刷パターン配線における第３配線部１３〜第７配線部１７と、裏面に配置された第１ジャンパー部３１〜第５ジャンパー部３５を、それぞれ上面視Ｘ状をなすように交差させて、対応する配線部とジャンパー部同士を接続している。この実施形態においても、往路の電流経路と復路の電流経路が捻れたツイスト状態に形成されており、このツイスト状態の電流経路を往復電流が対向して流れる結果、回路部品４００に含まれるスイッチング用半導体の電圧変動部分からなるスイッチング周波数に同期したＲ／Ｎ成分ノイズが発生しても、このノイズを抑制でき、第１接続ライン７１及び第２接続ライン７２を通じて商用電源２側に流出するのを、安価な単相基板１０を使用したものでありながら抑制できる。 In this embodiment, the third wiring portions 13 to 7 wiring portions 17 in the print pattern wiring formed on the front surface of the substrate 10 and the first jumper portions 31 to 5 jumper portions 35 arranged on the back surface are respectively on the upper surface. The corresponding wiring portions and jumper portions are connected to each other by intersecting them in a visual X shape. Also in this embodiment, the outbound current path and the inbound current path are formed in a twisted state, and as a result of the reciprocating current flowing in opposition to the twisted current path, for switching included in the circuit component 400. Even if R / N component noise synchronized with the switching frequency consisting of the voltage fluctuation part of the semiconductor is generated, this noise can be suppressed, and the current can be prevented from flowing out to the commercial power supply 2 side through the first connection line 71 and the second connection line 72. Although it uses an inexpensive single-phase substrate 10, it can be suppressed.

図９〜図１１はこの発明のさらに他の実施形態を示すもので、図９は図２と同様に、スイッチング電源４の回路基板の入力側の一部を示す図である。また、図１０は図９のＸ−Ｘ線断面図であり、図１１は図９のＸＩ−ＸＩ線断面図である。 9 to 11 show still another embodiment of the present invention, and FIG. 9 is a diagram showing a part of the input side of the circuit board of the switching power supply 4 as in FIG. 2. 10 is a cross-sectional view taken along the line XX of FIG. 9, and FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG.

この実施形態では、基板１０の片面において印刷配線部とジャンパー部が配置され、復電流が流れる電流経路がツイスト状態となっている。 In this embodiment, the printed wiring portion and the jumper portion are arranged on one side of the substrate 10, and the current path through which the recovery current flows is in a twisted state.

すなわち、図２に示す実施形態と同様に、基板１０の表面に、第１配線部１１、第２配線部１２、第３配線部１３、第４配線部１４、第５配線部１５、第６配線部１６、第７配線部１７、第８配線部１８、第９配線部１９が、それぞれ形成されている。各配線部の構成も図２に示す実施形態と同じである。 That is, as in the embodiment shown in FIG. 2, on the surface of the substrate 10, the first wiring portion 11, the second wiring portion 12, the third wiring portion 13, the fourth wiring portion 14, the fifth wiring portion 15, and the sixth The wiring portion 16, the seventh wiring portion 17, the eighth wiring portion 18, and the ninth wiring portion 19 are formed, respectively. The configuration of each wiring portion is also the same as that of the embodiment shown in FIG.

この実施形態では、各配線部が形成された基板１０の表面に、２個の配線部を接続するための複数のジャンパー部３１０〜３５０が配置されている。この実施形態では、ジャンパー部３１０〜３５０は、基板１０とは別体で構成され、絶縁部材の表面に銅箔等の導通材３１１〜３５１が配置されている。具体的には、第１配線部１１の右端部と第４配線部１４の左端部を接続するための第１ジャンパー部３１０と、第３配線部１３の右端部と第５配線部１５の左端部を接続するための第２ジャンパー部３２０と、第４配線部１４の右端部と第６配線部１６の左端部を接続するための第３ジャンパー部３３０と、第５配線部１５の右端部と第７配線部１７の左端部を接続するための第４ジャンパー部３４０と、第６配線部１６の右端部と第９配線部１９の左端部を接続するための第５ジャンパー部３５０が、それぞれ絶縁面が各配線部１１〜１９側に位置し、絶縁面と反対側に導通材３１１〜３５１が位置する態様で各配線部１１〜１９を跨いで配置されている。なお、導通材３１１〜３５１の形成位置や形成態様は任意であり、この実施形態のものに限定されることはない。 In this embodiment, a plurality of jumper portions 310 to 350 for connecting the two wiring portions are arranged on the surface of the substrate 10 on which each wiring portion is formed. In this embodiment, the jumper portions 310 to 350 are formed separately from the substrate 10, and conductive materials 31 to 351 such as copper foil are arranged on the surface of the insulating member. Specifically, the first jumper portion 310 for connecting the right end portion of the first wiring portion 11 and the left end portion of the fourth wiring portion 14, the right end portion of the third wiring portion 13, and the left end of the fifth wiring portion 15 The second jumper portion 320 for connecting the portions, the third jumper portion 330 for connecting the right end portion of the fourth wiring portion 14 and the left end portion of the sixth wiring portion 16, and the right end portion of the fifth wiring portion 15. The fourth jumper portion 340 for connecting the left end portion of the seventh wiring portion 17 and the fifth jumper portion 350 for connecting the right end portion of the sixth wiring portion 16 and the left end portion of the ninth wiring portion 19 The insulating surfaces are located on the respective wiring portions 11 to 19 side, and the conductive materials 31 to 351 are located on the opposite side to the insulating surface, and are arranged so as to straddle the respective wiring portions 11 to 19. The forming position and forming mode of the conductive materials 31 to 351 are arbitrary and are not limited to those of this embodiment.

そして、基板１０のスルーホール２１と対応するジャンパー部３１０〜３５０の貫通穴２２に、ハンダ４０が充填されて、各配線部と各ジャンパー部３１０〜３５０の各導通材３１１〜３５１とが電気的、物理的に接続されている。なお、ジャンパー部３１０〜３５０の絶縁面が各配線部側に位置しているから、ジャンパー部３１０〜３５０と各配線部が交差面で導通することはない。 Then, the through holes 22 of the jumper portions 310 to 350 corresponding to the through holes 21 of the substrate 10 are filled with solder 40, and each wiring portion and each conductive material 31 to 351 of each jumper portion 310 to 350 are electrically connected. , Physically connected. Since the insulating surfaces of the jumper portions 310 to 350 are located on each wiring portion side, the jumper portions 310 to 350 and each wiring portion do not conduct with each other at the intersection surface.

このような各配線部１１〜１９とジャンパー部３１〜３５の各導通材３１ａ〜３５ａとの接続状態では、図７に回路図に示したのと同様に、接続ライン７１→第１配線部１１→第１ジャンパー部３１０の導通材３１１→第４配線部１４→第３ジャンパー部３３０の導通材３３１→第６配線部１６→第５ジャンパー部３５０の導通材３５１→第９配線部１９→スイッチング用半導体を含む回路部品４００へと至る第１電流経路と、回路部品４００→第８配線部１８→第７配線部１７→第４ジャンパー部３４０の導通材３４１→第５配線部１５→第２ジャンパー部３２０の導通材３２１→第３配線部１３→第２配線部１２→接続ライン７２へと至る第２電流経路の２つの電流経路が形成され、各電流経路には回路部品４００への往路電流と、回路部品４００からの復路電流が対になって流れるようになっている。そして、往路の電流経路と復路の電流経路が捻れたツイスト状態に形成されており、このツイスト状態の電流経路を往復電流が対向して流れる結果、回路部品４００に含まれるスイッチング用半導体の電圧変動部分からなるスイッチング周波数に同期したＲ／Ｎ成分ノイズが発生しても、このノイズを抑制でき、接続ライン７１及び接続ライン７２を通じて商用電源２側に流出するのを抑制できる。しかも、ジャンパー部３１０〜３５０も各配線部１１〜１９も単層基板１０の一面側に配置されているから、単層基板１０の片面のみを使用して、往復電流が流れる電流経路をツイストさせることができる。 In such a connection state between the wiring portions 11 to 19 and the conductive materials 31a to 35a of the jumper portions 31 to 35, the connection line 71 → the first wiring portion 11 as shown in the circuit diagram in FIG. → Conducting material 311 of the first jumper section 310 → Fourth wiring section 14 → Conducting material 331 of the third jumper section 330 → Sixth wiring section 16 → Conducting material 351 of the fifth jumper section 350 → Ninth wiring section 19 → Switching The first current path leading to the circuit component 400 including the semiconductor for use, the circuit component 400 → the eighth wiring section 18 → the seventh wiring section 17 → the conductive material 341 of the fourth jumper section 340 → the fifth wiring section 15 → the second Two current paths of a second current path from the conductive material 321 of the jumper portion 320 → the third wiring portion 13 → the second wiring portion 12 → the connection line 72 are formed, and each current path is an outward path to the circuit component 400. The current and the return current from the circuit component 400 flow in pairs. The outbound current path and the inbound current path are formed in a twisted twisted state, and as a result of the reciprocating current flowing in opposition to the twisted current path, the voltage fluctuation of the switching semiconductor included in the circuit component 400 Even if R / N component noise synchronized with the switching frequency composed of the parts is generated, this noise can be suppressed, and the outflow to the commercial power supply 2 side through the connection line 71 and the connection line 72 can be suppressed. Moreover, since the jumper portions 310 to 350 and the wiring portions 11 to 19 are arranged on one side of the single-layer board 10, only one side of the single-layer board 10 is used to twist the current path through which the reciprocating current flows. be able to.

なお、ジャンパー部３１０〜３５０と各配線部１３〜１７との交差状態は図９の状態のものに限定されることはなく、図１２に示すように上面視Ｘ状をなすように交差させても良い。 The crossing state of the jumper portions 310 to 350 and the wiring portions 13 to 17 is not limited to the state shown in FIG. 9, and is crossed so as to form an X shape in a top view as shown in FIG. Is also good.

以上、本発明のいくつかの実施形態を説明したが、本発明はこれらの実施形態に限定されることはない。 Although some embodiments of the present invention have been described above, the present invention is not limited to these embodiments.

例えば、裏面に配置される第１ジャンパー部３１〜第５ジャンパー部３５を、基板１０とは別体の導電部品で構成した場合を説明したが、印刷配線によって形成し、スルーホールを介して表裏で接続されても良い。 For example, the case where the first jumper portions 31 to 5 jumper portions 35 arranged on the back surface are composed of conductive parts that are separate from the substrate 10 has been described, but they are formed by printed wiring and are formed on the front and back surfaces through through holes. It may be connected with.

また、スイッチング電源４の入力側において、往路の電流経路と復路の電流経路をツイスト状態に形成したが、スイッチング電源４の出力側において形成し、ノイズがスイッチング電源４の出力側に流出するのを抑制しても良い。この場合は、図１の照明装置におけるスイッチング電源４の出力側に搭載されたフィルタユニット５の小型化を図ることができる。 Further, on the input side of the switching power supply 4, the outbound current path and the inbound current path are formed in a twisted state, but they are formed on the output side of the switching power supply 4 so that noise flows out to the output side of the switching power supply 4. It may be suppressed. In this case, the size of the filter unit 5 mounted on the output side of the switching power supply 4 in the lighting device of FIG. 1 can be reduced.

また、印刷配線部１１〜１９は直線状に形成したが、曲線状に形成しても良く、ジャンパー部３１〜３５、３１０〜３５０も曲線状のものに構成しても良い。 Further, although the printed wiring portions 11 to 19 are formed in a straight line, the printed wiring portions 11 to 19 may be formed in a curved shape, and the jumper portions 31 to 35 and 310 to 350 may also be formed in a curved shape.

１商用電源
２電源スイッチ
３、５フィルタユニット
４スイッチング電源
６負荷(光源)
１０基板
１１〜１９配線部
１４ａ〜１６ａ径大部
２１スルーホール
２２貫通孔
３１〜３５、３１０〜３５０ジャンパー部
３１１〜３５１導通材
４０ハンダ 1 Commercial power supply 2 Power supply switch 3, 5 Filter unit 4 Switching power supply 6 Load (light source)
10 Substrate 11-19 Wiring part 14a to 16a Large diameter part 21 Through hole 22 Through hole 31 to 35, 310 to 350 Jumper part 31 to 351 Conductive material 40 Solder

Claims

A switching power supply that uses a single-layer board
A switching power supply characterized in that a jumper portion is arranged so as to intersect a printed wiring portion formed on the single-layer substrate and through which a pair of reciprocating currents flow, thereby twisting the current path through which the reciprocating current flows. ..

The switching power supply according to claim 1, wherein the printed wiring portion is formed on one surface side of the single-layer substrate, and the jumper portion is arranged on the other surface side of the single-layer substrate.

The switching power supply according to claim 1, wherein the printed wiring portion is formed on one surface side of the single-layer substrate, and the jumper portion is also arranged on one surface side of the single-layer substrate which is the same as the printed wiring portion.

The switching power supply according to claim 2 or 3, wherein the jumper portion is composed of a conductive component that is separate from the single-layer substrate.

The switching power supply according to claim 2, wherein the jumper portion is formed by printed wiring.

The switching power supply according to any one of claims 1 to 5, which converts the power supplied from the commercial power supply into a predetermined power.
A light source driven by receiving the power converted by the switching power supply,
A lighting device characterized by being equipped with.