JP4927780B2

JP4927780B2 - Power supply

Info

Publication number: JP4927780B2
Application number: JP2008124915A
Authority: JP
Inventors: 宏治竹島; 暁江小林
Original assignee: Cosel Co Ltd
Current assignee: Cosel Co Ltd
Priority date: 2008-05-12
Filing date: 2008-05-12
Publication date: 2012-05-09
Anticipated expiration: 2028-05-12
Also published as: JP2009277707A

Description

この発明は、冷却用ファンが設けられた電源装置に関する。 The present invention relates to a power supply device provided with a cooling fan.

従来、発熱が大きい電源装置には、冷却用ファンが設けられている。例えば、図６に示す電源装置１には、筐体の底面を形成する底板２と、底板２にスペーサ３を介して取付けられたプリント基板４が設けられ、プリント基板４には複数の電子部品５が表裏面に取付けられている。電源装置１の図示しない筐体の側面側であって底板２の近傍には、冷却用のファン６が設けられている。この電源装置１は、ファン６によりプリント基板４に向かって冷却用空気が送られて、電子部品５を冷却するものである。しかし送風の際に、底板２とプリント基板４の間に、冷却用の空気とともにほこり等の導電性の異物等が流れ込み、プリント基板４のはんだ面の電極露出部を短絡する事故が発生することがある。これを防ぐために、底板２の内側面に沿って絶縁紙７が設けられ、絶縁紙７のファン６側の端部７ａは、ほぼ直角にプリント基板４へ向かって折り曲げられ、底板２とプリント基板４の隙間を塞ぎ、ファン６の風を遮断して異物等の侵入を防いでいる。 Conventionally, a cooling fan is provided in a power supply device that generates a large amount of heat. For example, the power supply device 1 shown in FIG. 6 includes a bottom plate 2 that forms the bottom surface of the housing, and a printed board 4 that is attached to the bottom plate 2 via a spacer 3. The printed board 4 includes a plurality of electronic components. 5 is attached to the front and back surfaces. A cooling fan 6 is provided in the vicinity of the bottom plate 2 on the side surface of the casing (not shown) of the power supply device 1. In the power supply device 1, cooling air is sent toward a printed circuit board 4 by a fan 6 to cool the electronic component 5. However, when air is blown, conductive foreign matter such as dust flows between the bottom plate 2 and the printed circuit board 4 together with cooling air, and an accident occurs in which the electrode exposed portion of the solder surface of the printed circuit board 4 is short-circuited. There is. In order to prevent this, the insulating paper 7 is provided along the inner surface of the bottom plate 2, and the end 7 a on the fan 6 side of the insulating paper 7 is bent toward the printed circuit board 4 at a substantially right angle. 4 is closed, and the wind of the fan 6 is blocked to prevent entry of foreign matter or the like.

また、異物による短絡を防ぐため、プリント基板４にコーティング処理を施す方法がある。例えば、特許文献１に開示されているブラシレスファンモータは、ファンに形成された平板体により外気を撹拌して強制的に通風口から入流させてモータの電子部品を冷却し、モータの駆動制御回路には、防湿・防滴コーティング材を塗布して強制流入空気に含まれるほこりや湿気から駆動制御回路を保護するものである。 In addition, there is a method of performing a coating process on the printed circuit board 4 in order to prevent a short circuit due to foreign matter. For example, a brushless fan motor disclosed in Patent Document 1 is a motor drive control circuit that cools electronic components of a motor by stirring outside air with a flat plate formed on the fan and forcing it to flow through a vent hole. In this case, a moisture-proof / drip-proof coating material is applied to protect the drive control circuit from dust and moisture contained in the forced inflow air.

その他、冷却用の空気とともに侵入する異物を防ぐ遮蔽物を設けたものとして、特許文献２の電子機器や特許文献３の電子機器があった。
特開平１０−１０８４３５号公報実開平５−４３９６号公報特開２００４−２５３４３８号公報 In addition, there are electronic devices disclosed in Patent Document 2 and Patent Document 3 that are provided with a shield that prevents foreign matter that enters with the cooling air.
JP-A-10-108435 Japanese Utility Model Publication No. 5-4396 JP 2004-253438 A

図６に示す電源装置１の場合、プリント基板４と絶縁紙７の端部７ａの間に隙間ができ、この隙間からわずかに風が入り込んで異物等が侵入するおそれがあった。また、ファン６との接触を避けるため、及びファン６等との放電によるショートを防ぐため、ファン６から底板２とプリント基板４を離して設置しなければならず、電源装置１の小形化を図る上での障害となっていた。 In the case of the power supply device 1 shown in FIG. 6, there is a gap between the printed circuit board 4 and the end portion 7a of the insulating paper 7, and there is a possibility that a small amount of wind enters the gap and foreign matter or the like enters. Further, in order to avoid contact with the fan 6 and to prevent a short circuit due to discharge with the fan 6 or the like, the bottom plate 2 and the printed circuit board 4 must be separated from the fan 6, thereby reducing the size of the power supply device 1. It was an obstacle to plan.

また、特許文献１に開示されているブラシレスファンモータは、コーティング処理の塗布管理が難しく、塗りむらなどが発生することがある。また、空冷ファン近傍の部品は風速が早いため、空気とともに細かい粒子或いは水分等が当たり、コーティング膜がはげてしまい、経時的に効果がなくなるものであった。 In addition, the brushless fan motor disclosed in Patent Document 1 is difficult to manage the coating process, and uneven coating may occur. Further, since the parts near the air-cooling fan have a high wind speed, fine particles or moisture hits with the air, and the coating film peels off, so that the effect is lost over time.

その他、特許文献２，３に開示されたものも、簡単な構成で電子部品に対する風の影響を抑えることできるものではなかった。 In addition, those disclosed in Patent Documents 2 and 3 have not been able to suppress the influence of wind on electronic components with a simple configuration.

この発明は、上記背景技術の問題点に鑑みてなされたものであり、遮蔽部材の位置決めが簡単で、取付工程も容易で作業効率が高く、不用な箇所への冷却用のファンの風を確実に遮断して異物の侵入による短絡事故を防ぐ電源装置を提供することを目的とする。 The present invention has been made in view of the problems of the background art described above, and the positioning of the shielding member is simple, the mounting process is easy, the work efficiency is high, and the cooling fan wind to an unnecessary place is ensured. An object of the present invention is to provide a power supply device that can be cut off to prevent a short-circuit accident due to entry of foreign matter.

本発明は、筐体の底面を形成する底板と、前記底板にスペーサを介して設けられ電子部品が取り付けられたプリント基板と、前記底板に近接し前記筐体の側面側に設けられて前記プリント基板の前記電子部品に向かって送風する冷却用のファンを有した電源装置であって、前記プリント基板の端部に形成された開口部と、前記開口部に取り付けられ前記底板と前記プリント基板間の空間と前記ファンとの間を仕切る遮蔽部材とを備え、前記遮蔽部材により、前記プリント基板と前記底板の間に送られる前記ファンからの風が遮断される電源装置である。前記遮蔽部材は、絶縁性の合成樹脂で作られている。 The present invention includes a bottom plate that forms a bottom surface of a housing, a printed circuit board on which electronic components are attached to the bottom plate via a spacer, and a printed circuit board that is provided on a side surface of the housing in the vicinity of the bottom plate. A power supply device having a cooling fan that blows air toward the electronic component of a board, the opening formed at an end of the printed circuit board, and the bottom plate and the printed circuit board attached to the opening A shield member that partitions the space between the fan and the fan, and the wind from the fan sent between the printed circuit board and the bottom plate is blocked by the shield member. The shielding member is made of an insulating synthetic resin.

さらに、前記底板と前記プリント基板は互いに平行に位置し、前記プリント基板が前記底板の上方に設けられ、前記プリント基板の端部は前記底板の端部よりも内側に位置し、前記遮蔽部材には、前記プリント基板に対して交差して設けられ下端部が前記底板の上側面に当接し上端部が前記プリント基板の上側面よりも上方に突出する遮蔽板と、前記遮蔽板の上端部に連続し前記プリント基板の前記開口部に向かって突出する連結部と、前記連結部の先端に設けられ前記開口部に差し込み嵌合される差込突起が設けられ、前記連結部は前記プリント基板の上側面に離間して位置し、前記遮蔽板の下端部は、前記底板の上側面に自重をかけて当接するものである。 Further, the bottom plate and the printed circuit board are positioned in parallel with each other, the printed circuit board is provided above the bottom plate, and an end portion of the printed circuit board is positioned on an inner side than an end portion of the bottom plate, Are provided so as to intersect with the printed circuit board, with a lower end contacting the upper surface of the bottom plate and an upper end projecting upward from the upper surface of the printed circuit board, and an upper end of the shielding plate. A connecting portion that continuously protrudes toward the opening of the printed circuit board, and an insertion protrusion that is provided at the front end of the connecting portion and is inserted and fitted into the opening, are provided on the printed circuit board. The lower end portion of the shielding plate is positioned apart from the upper side surface and abuts against the upper side surface of the bottom plate with its own weight.

または、前記底板と前記プリント基板は互いに平行に位置し、前記プリント基板が前記底板の上方に設けられ、前記プリント基板の端部は前記底板の端部よりも内側に位置し、前記遮蔽部材には、前記プリント基板に対して交差して設けられ下端部が前記底板の上側面に当接し上端部が前記プリント基板の上側面よりも上方に突出する遮蔽板と、前記遮蔽板の下端部に連続し前記底板の上側面に沿って前記プリント基板の前記開口部に対向する位置に向かって突出する連結部と、前記連結部の先端に設けられ前記開口部に下方から差し込み嵌合される差込突起が設けられ、前記遮蔽板の下端部は前記底板の上側面に自重をかけて当接するものである。 Alternatively, the bottom plate and the printed circuit board are positioned parallel to each other, the printed circuit board is provided above the bottom plate, and an end portion of the printed circuit board is positioned inside an end portion of the bottom plate, and the shielding member Are provided so as to intersect the printed circuit board, with a lower end contacting the upper surface of the bottom plate and an upper end projecting above the upper surface of the printed circuit board, and a lower end of the shielding plate A connecting portion that continuously protrudes along the upper surface of the bottom plate toward the position facing the opening of the printed circuit board, and a difference that is provided at the tip of the connecting portion and is inserted and fitted into the opening from below. A protrusion is provided, and the lower end of the shielding plate abuts against the upper surface of the bottom plate with its own weight.

前記開口部は、前記プリント基板の端部に開放された小幅部と、この小幅部に連通して側方に広がった大幅部とからなる。 The opening includes a small width portion opened to an end portion of the printed circuit board and a large portion that communicates with the small width portion and widens laterally.

本発明の電源装置は、遮蔽部材の位置決めが簡単で取付工程も容易で作業効率が高く、プリント基板と筐体の底板の間にファンの風が流入することを確実に遮断し、風による導電性の異物等の侵入を防ぎ、短絡事故を防ぐことができる。さらに、冷却用のファンとの距離が一定となり、ファンと接触することによるファンの破損や回転不良、電子部品との間の放電によるショートを防ぐことができ、安全性の高い装置を提供することができる。 The power supply device of the present invention has a simple positioning of the shielding member, an easy mounting process, high work efficiency, and reliably blocks the flow of fan wind between the printed circuit board and the bottom plate of the housing. Invasion of sexual foreign matters can be prevented and short circuit accidents can be prevented. Furthermore, the distance from the cooling fan is constant, and it is possible to prevent damage to the fan due to contact with the fan, rotation failure, and short circuit due to electric discharge between electronic components, and to provide a highly safe device. Can do.

以下、この発明の実施形態について図面に基づいて説明する。図１〜図４はこの発明の一実施形態を示すもので、この実施形態の電源装置１０は、筐体の底部を形成する底板１２がほぼ水平に設けられ、底板１２の上側面１２ｂにはスペーサ１４を介して底板１２に対してほぼ平行にプリント基板１６が設けられている。プリント基板１６の底板１２側にはチップ部品等の複数の電子部品１８が取り付けられ、底板１２と反対側の上側面１６ｃには、トランスやパワートランジスタ等の比較的大きな電子部品１８が設けられている。そして、底板１２の一方の端部１２ａ近傍の筐体側面側には、大きな電子部品１８の発熱を冷却するファン２０が設けられている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show an embodiment of the present invention. In a power supply device 10 according to this embodiment, a bottom plate 12 forming a bottom portion of a housing is provided substantially horizontally, and an upper side surface 12b of the bottom plate 12 is provided on an upper surface 12b. A printed circuit board 16 is provided substantially parallel to the bottom plate 12 via the spacers 14. A plurality of electronic components 18 such as chip components are attached to the bottom plate 12 side of the printed circuit board 16, and relatively large electronic components 18 such as a transformer and a power transistor are provided on the upper side surface 16 c opposite to the bottom plate 12. Yes. A fan 20 that cools the heat generated by the large electronic component 18 is provided on the side of the casing near the one end 12 a of the bottom plate 12.

プリント基板１６のファン２０に近い端部１６ａは、底板１２の端部１２ａよりも内側に位置し、プリント基板１６の端部１６ａには、外側に開口した開口部である切欠部２２が形成されている。切欠部２２は、図２に示すように端部１６ａの中心付近に設けられ、端部１６ａに対してほぼ直角に切り欠かれた一定幅の小幅部２２ａと、小幅部２２ａのプリント基板１６内側に連続して形成され、小幅部２２ａよりも幅が広い大幅部２２ｂが設けられている。大幅部２２ｂは、端部１６ａに対して平行な一対の長辺を有する細長い矩形であり、大幅部２２ｂと端部１６ａの間に切り残され小幅部２２ａの両側に位置する部分は、係止突起２４となる。 An end portion 16a of the printed circuit board 16 close to the fan 20 is positioned on the inner side of the end portion 12a of the bottom plate 12, and a cutout portion 22 that is an opening opening outward is formed in the end portion 16a of the printed circuit board 16. ing. As shown in FIG. 2, the notch 22 is provided in the vicinity of the center of the end 16a. The notch 22 is cut out at a substantially right angle with respect to the end 16a, and the inside of the printed board 16 of the small width 22a. A large portion 22b that is formed continuously and wider than the small width portion 22a is provided. The large portion 22b is an elongated rectangle having a pair of long sides parallel to the end portion 16a, and the portions located on both sides of the small width portion 22a that are left uncut between the large portion 22b and the end portion 16a are latched. It becomes the protrusion 24.

なお、大幅部２２ｂは、後述する遮蔽部材２６の差込突起３２が差し込まれるもので、差込突起３２の断面形状に対してややゆとりを有して大きく設けられている。これは、差込突起３２を大幅部２２ｂに差し込む際の作業性を良好とするためである。また、ゆとりを有しているため、差込突起３２は大幅部２２ｂの中で水平方向に僅かに移動するが、遮蔽部材２６がファン２０に最も近づいてもファン２０に接触しない位置に設定され、安全性が確保されている。 Note that the large portion 22b is inserted with an insertion protrusion 32 of a shielding member 26 described later, and is largely provided with a slight clearance with respect to the cross-sectional shape of the insertion protrusion 32. This is to improve workability when inserting the insertion protrusion 32 into the large portion 22b. Since the insertion protrusion 32 slightly moves in the horizontal direction in the large portion 22 b because it has a clearance, it is set at a position where it does not come into contact with the fan 20 even when the shielding member 26 is closest to the fan 20. , Safety is ensured.

プリント基板１６の端部１６ａには、遮蔽部材２６が取り付けられている。遮蔽部材２６は、絶縁性の合成樹脂で一体成形され、プリント基板１６に対してほぼ直角に位置する遮蔽板２８が設けられている。遮蔽板２８は、プリント基板１６の端部１６ａに対して平行な方向に長細い矩形であり、遮蔽板２８の一方の長辺である下端部２８ａは、底板１２の上側面１２ｂにほぼ直角に当接し、他方の長辺である上端部２８ｂは、プリント基板１６の上側面１６ｃよりも上方に突出するものである。遮蔽板２８の下端部２８ａと上端部２８ｂに対して直角な一対の側端部２８ｃ，２８ｄは、プリント基板１６の、端部１６ａに対して直交する一対の端部１６ｂ付近に達し、プリント基板１６の両側縁より僅かに内側に位置している。 A shielding member 26 is attached to the end portion 16 a of the printed circuit board 16. The shielding member 26 is integrally formed of an insulating synthetic resin, and is provided with a shielding plate 28 that is positioned substantially perpendicular to the printed circuit board 16. The shielding plate 28 is a long and narrow rectangle in a direction parallel to the end portion 16 a of the printed circuit board 16, and the lower end portion 28 a which is one long side of the shielding plate 28 is substantially perpendicular to the upper side surface 12 b of the bottom plate 12. The upper end portion 28b that is in contact with the other long side protrudes above the upper side surface 16c of the printed circuit board 16. The pair of side end portions 28c and 28d perpendicular to the lower end portion 28a and the upper end portion 28b of the shielding plate 28 reach the vicinity of the pair of end portions 16b orthogonal to the end portion 16a of the printed circuit board 16. It is located slightly inside the side edges of 16.

遮蔽板２８の上端部２８ｂの、長手方向の中間には連結部３０が設けられている。連結部３０は、一定幅で遮蔽板２８に対してほぼ直角にプリント基板１６の表面に沿って突出して形成されている。連結部３０の先端には、差込突起３２が設けられている。差込突起３２は、連結部３０と同じ幅の矩形の板状であり、連結部３０に対して略直角で遮蔽板２８に対してほぼ平行に突出して設けられている。差込突起３２の、突出方向に交差する断面形状は、プリント基板１６の切欠部２２の大幅部２２ｂにゆとりを有して差し込まれる形状であり、小幅部２２ａの幅よりも大きく形成され、係止突起２４に係止されて小幅部２２ａから抜けない形状である。 A connecting portion 30 is provided in the middle of the upper end portion 28b of the shielding plate 28 in the longitudinal direction. The connecting portion 30 is formed to protrude along the surface of the printed circuit board 16 at a constant width and at a right angle to the shielding plate 28. An insertion protrusion 32 is provided at the tip of the connecting portion 30. The insertion protrusion 32 is a rectangular plate having the same width as the connecting portion 30, and is provided so as to protrude substantially parallel to the shielding plate 28 at a substantially right angle to the connecting portion 30. The cross-sectional shape of the insertion protrusion 32 that intersects the protruding direction is a shape that is inserted into the large portion 22b of the cutout portion 22 of the printed circuit board 16 with a space, and is formed larger than the width of the small width portion 22a. It is a shape that is locked to the stop protrusion 24 and does not come out of the small width portion 22a.

次に、遮蔽部材２６のプリント基板１６への取付方法について説明する。まず、プリント基板１６の切欠部２２の大幅部２２ｂに、差込突起３２をプリント基板１６の上側面１６ｃから差し込み嵌合する。このとき、遮蔽板２８の下端部２８ａは底板１２の上側面１２ｂに当接し、上端部２８ｂはプリント基板１６の上側面１６ｃよりも上方に突出し、連結部３０はプリント基板１６の上側面１６ｃの少し上方に離間してほぼ平行に位置する。これにより遮蔽板２８はプリント基板１６に制限されることがなく、遮蔽板２８の下端部２８ａは底板１２の上側面１２ｂに自重をかけて当接し、隙間を生じることがない。また、差込突起３２は大幅部２２ｂの中でゆとりを有して嵌合されているが、差込突起３２は、大幅部２２ｂの中で水平方向には所定の位置に位置決めされ、遮蔽部材２６がファン２０に最も近づいたとしてもファン２０に接触しない位置に設定され、安全性を確保している。 Next, a method for attaching the shielding member 26 to the printed circuit board 16 will be described. First, the insertion protrusion 32 is inserted and fitted into the large portion 22 b of the notch portion 22 of the printed circuit board 16 from the upper side surface 16 c of the printed circuit board 16. At this time, the lower end portion 28a of the shielding plate 28 abuts on the upper side surface 12b of the bottom plate 12, the upper end portion 28b projects upward from the upper side surface 16c of the printed circuit board 16, and the connecting portion 30 is connected to the upper side surface 16c of the printed circuit board 16. They are spaced slightly upward and are approximately parallel. As a result, the shielding plate 28 is not limited to the printed circuit board 16, and the lower end portion 28 a of the shielding plate 28 abuts against the upper side surface 12 b of the bottom plate 12 with its own weight, and no gap is generated. Further, the insertion protrusion 32 is fitted with a space in the large portion 22b, but the insertion protrusion 32 is positioned at a predetermined position in the horizontal direction in the large portion 22b, and is a shielding member. Even if 26 is closest to the fan 20, the position is set so as not to contact the fan 20, thereby ensuring safety.

この実施形態の電源装置１０によれば、簡単な構造で遮蔽部材２６の位置決めが簡単で、取付工程も容易で作業効率が良好である。遮蔽部材２６の遮蔽板２８が、プリント基板１６と底板１２の間の空間に隙間なく取付けられるため、ファン２０の風の流入を確実に遮断し、風とともに吹き込まれる導電性の異物の侵入を防ぎ、短絡事故を防ぐことができる。また、コーティングされた部品の皮膜が剥離されることもない。 According to the power supply device 10 of this embodiment, the positioning of the shielding member 26 is simple with a simple structure, the attachment process is easy, and the working efficiency is good. Since the shielding plate 28 of the shielding member 26 is attached to the space between the printed circuit board 16 and the bottom plate 12 without a gap, the inflow of the wind of the fan 20 is surely blocked and the intrusion of conductive foreign matter blown together with the wind is prevented. Can prevent short circuit accidents. Moreover, the coating of the coated part is not peeled off.

さらに、冷却用のファン２０と遮蔽部材２６の距離が一定となり、ファン２０と遮蔽部材２６が接触することによるファン２０の破損や回転不良を防ぐことができ、安全である。大幅部２２ｂは、差込突起３２の厚みに対してややゆとりを有して形成されているため差込突起３２を大幅部２２ｂに差し込む作業性はゆとりがあるために良好で、また大幅部２２ｂの位置は、遮蔽部材２６が最もファン２０に近づいたとしてもファン２０に接触しない位置に設定され、安全性が高いものである。 In addition, the distance between the cooling fan 20 and the shielding member 26 is constant, and the fan 20 and the shielding member 26 are in contact with each other, so that damage or rotation failure of the fan 20 can be prevented, which is safe. Since the large portion 22b is formed with a slight clearance with respect to the thickness of the insertion protrusion 32, the workability of inserting the insertion protrusion 32 into the large portion 22b is good because there is room, and the large portion 22b. Even if the shielding member 26 is closest to the fan 20, the position is set at a position where it does not come into contact with the fan 20, and the safety is high.

遮蔽部材２６は、絶縁性の合成樹脂で作られているため、ファン２０と電子部品１８等との間の放電を確実に防ぐことができる。また、ファン２０との絶縁のために距離を置く必要が無く、装置の小形化が可能となる。遮蔽部材２６は、プリント基板１６の切欠部２２に差し込まれて係止され、接着やネジによる固定等が不要で、作業工程が簡単なものとなる。遮蔽部材２６は、底板１２から連結部３０までの遮蔽板２８の高さがプリント基板１６までの高さより高いため、連結部３０がプリント基板１６に係止されずに底板１２に置かれるため遮蔽板２８の下端部２８ａが底板１２の内側面１２ｂに、自重をかけて隙間なく当接することができる。 Since the shielding member 26 is made of an insulating synthetic resin, the discharge between the fan 20 and the electronic component 18 can be reliably prevented. Further, there is no need to provide a distance for insulation from the fan 20, and the apparatus can be miniaturized. The shielding member 26 is inserted and locked in the cutout portion 22 of the printed circuit board 16, and does not need to be bonded or fixed with screws, and the work process is simplified. Since the height of the shielding plate 28 from the bottom plate 12 to the connecting portion 30 is higher than the height from the printed board 16 to the shielding member 26, the shielding portion 26 is placed on the bottom plate 12 without being locked to the printed board 16. The lower end portion 28a of the plate 28 can contact the inner surface 12b of the bottom plate 12 with its own weight without any gap.

なお、この実施形態の電源装置は、遮蔽部材の形状が異なるものでも良い。例えば図５に示す電源装置３４の遮蔽部材３６は、遮蔽板３８を有し、遮蔽板３８の底板１２側の下端部３８ａに連結部４０が設けられている。連結部４０の先端には差込突起４２が設けられている。差込突起４２の断面形状は、プリント基板１６の切欠部２２の大幅部２２ｂにゆとりを有して差し込まれる形状であり、垂直方向の長さは遮蔽板２８とほぼ等しく形成されている。遮蔽部材３６のプリント基板１６への取付方法は、プリント基板１６の切欠部２２の大幅部２２ｂに、差込突起４２を下から差し込み嵌合する。このとき、連結部４０は底板１２の上側面１２ｂに重ねられ、遮蔽部材３６の下端部３８ａは底板１２の上側面１２ｂに当接し、上端部３８ｂはプリント基板１６の上側面１６ｃよりも上方に突出する。 Note that the power supply device of this embodiment may have a different shape of the shielding member. For example, the shielding member 36 of the power supply device 34 shown in FIG. 5 has a shielding plate 38, and a connecting portion 40 is provided at a lower end portion 38 a on the bottom plate 12 side of the shielding plate 38. An insertion protrusion 42 is provided at the tip of the connecting portion 40. The cross-sectional shape of the insertion protrusion 42 is a shape that is inserted into the large portion 22 b of the cutout portion 22 of the printed circuit board 16 with a space, and the length in the vertical direction is substantially equal to that of the shielding plate 28. As a method of attaching the shielding member 36 to the printed circuit board 16, the insertion protrusion 42 is inserted and fitted into the large portion 22 b of the notch 22 of the printed circuit board 16 from below. At this time, the connecting portion 40 is overlapped on the upper side surface 12b of the bottom plate 12, the lower end portion 38a of the shielding member 36 is in contact with the upper side surface 12b of the bottom plate 12, and the upper end portion 38b is higher than the upper side surface 16c of the printed board 16. Protruding.

この電源装置３４によれば、電源装置１０と同様に遮蔽部材３６の取付けの作業効率が良く、ファン２０との距離が一定となり、ファン２０の風を確実に遮断することができる。遮蔽板３８は、上記実施形態の遮蔽部材２６の差込突起３２を長く形成したもので、上記実施形態の取付方法と兼用可能としてもよい。 According to the power supply device 34, the work efficiency of attaching the shielding member 36 is good as in the power supply device 10, the distance from the fan 20 is constant, and the wind of the fan 20 can be reliably blocked. The shielding plate 38 is formed by extending the insertion protrusion 32 of the shielding member 26 of the above-described embodiment, and may be combined with the attachment method of the above-described embodiment.

なお、この発明の電源装置は上記実施の形態に限定されるものではなく、各部材の形状は適宜変更可能であり、プリント基板の切欠部の数や形状は自由に変更可能であり、切欠部の大幅部がプリント基板の端部に連通せず透孔のように形成されてもよい。遮蔽部材の差込突起の数や形状も、切欠部にあわせて適宜変更可能である。遮蔽部材の材質は、絶縁性の合成樹脂であればいろいろな材質を用いることが出来る。遮蔽部材がプリント基板に接着されてもよい。また、プリント基板を取り付ける方向は、水平以外でもよい。 In addition, the power supply device of this invention is not limited to the said embodiment, The shape of each member can be changed suitably, The number and shape of the notch part of a printed circuit board can be changed freely, Notch part However, the large portion may not be communicated with the end portion of the printed circuit board and may be formed like a through hole. The number and shape of the insertion protrusions of the shielding member can also be appropriately changed according to the notch. As the material of the shielding member, various materials can be used as long as they are insulating synthetic resins. The shielding member may be bonded to the printed board. The direction in which the printed board is attached may be other than horizontal.

この発明の一実施形態の電源装置の正面図である。It is a front view of the power supply device of one Embodiment of this invention. この実施形態の電源装置のプリント基板の平面図である。It is a top view of the printed circuit board of the power supply device of this embodiment. この実施形態の電源装置のプリント基板と遮蔽部材の斜視図である。It is a perspective view of the printed circuit board and shielding member of the power supply device of this embodiment. この実施形態の電源装置の縦断面図である。It is a longitudinal cross-sectional view of the power supply device of this embodiment. この実施形態の電源装置の変形例を示す正面図である。It is a front view which shows the modification of the power supply device of this embodiment. 従来の技術の電源装置を示す正面図である。It is a front view which shows the power supply device of a prior art.

符号の説明Explanation of symbols

１０電源装置
１２底板
１４スペーサ
１６プリント基板
１８電子部品
２０ファン
２２切欠部
２４係止突起
２６遮蔽部材
２８遮蔽板
３０連結部
３２差込突起 DESCRIPTION OF SYMBOLS 10 Power supply device 12 Bottom plate 14 Spacer 16 Printed circuit board 18 Electronic component 20 Fan 22 Notch part 24 Locking protrusion 26 Shielding member 28 Shielding board 30 Connecting part 32 Insertion protrusion

Claims

筐体の底面を形成する底板と、前記底板にスペーサを介して設けられ電子部品が取り付けられたプリント基板と、前記底板に近接し前記筐体の側面側に設けられて前記プリント基板の前記電子部品に向かって送風する冷却用のファンを有した電源装置において、
前記プリント基板の端部に形成された開口部と、前記開口部に取り付けられ前記底板と前記プリント基板間の空間と前記ファンとの間を仕切る遮蔽部材とを備え、前記遮蔽部材により、前記プリント基板と前記底板の間に送られる前記ファンからの風が遮断されることを特徴とする電源装置。 A bottom plate that forms a bottom surface of the housing; a printed circuit board on which electronic components are attached to the bottom plate via a spacer; and an electronic device that is disposed on a side surface of the housing in the vicinity of the bottom plate. In a power supply device having a cooling fan that blows air toward a component,
An opening formed at an end of the printed circuit board; and a shielding member that is attached to the opening and partitions the space between the bottom plate, the printed circuit board, and the fan. A power supply apparatus characterized in that the wind from the fan sent between a substrate and the bottom plate is blocked.

前記遮蔽部材は、絶縁性の合成樹脂で作られていることを特徴とする請求項１記載の電源装置。 The power supply apparatus according to claim 1, wherein the shielding member is made of an insulating synthetic resin.

前記底板と前記プリント基板は互いに平行に位置し、前記プリント基板が前記底板の上方に設けられ、前記プリント基板の端部は前記底板の端部よりも内側に位置し、前記遮蔽部材には、前記プリント基板に対して交差して設けられ下端部が前記底板の上側面に当接し上端部が前記プリント基板の上側面よりも上方に突出する遮蔽板と、前記遮蔽板の上端部に連続し前記プリント基板の前記開口部に向かって突出する連結部と、前記連結部の先端に設けられ前記開口部に差し込み嵌合される差込突起が設けられ、前記連結部は前記プリント基板の上側面に離間して位置し、前記遮蔽板の下端部は、前記底板の上側面に自重をかけて当接することを特徴とする請求項１または２記載の電源装置。 The bottom plate and the printed circuit board are positioned parallel to each other, the printed circuit board is provided above the bottom plate, the end of the printed circuit board is positioned inside the end of the bottom plate, and the shielding member includes A shielding plate provided so as to intersect with the printed circuit board and having a lower end contacting the upper surface of the bottom plate and an upper end projecting upward from the upper surface of the printed circuit board, and an upper end of the shielding plate. A connecting portion that protrudes toward the opening of the printed circuit board; and an insertion protrusion that is provided at a distal end of the connecting portion and is fitted into the opening. The connecting portion is an upper side surface of the printed circuit board. 3. The power supply device according to claim 1, wherein the power supply device is positioned so as to be spaced apart from each other, and the lower end portion of the shielding plate abuts against the upper side surface of the bottom plate with its own weight.

前記底板と前記プリント基板は互いに平行に位置し、前記プリント基板が前記底板の上方に設けられ、前記プリント基板の端部は前記底板の端部よりも内側に位置し、前記遮蔽部材には、前記プリント基板に対して交差して設けられ下端部が前記底板の上側面に当接し上端部が前記プリント基板の上側面よりも上方に突出する遮蔽板と、前記遮蔽板の下端部に連続し前記底板の上側面に沿って前記プリント基板の前記開口部に対向する位置に向かって突出する連結部と、前記連結部の先端に設けられ前記開口部に下方から差し込み嵌合される差込突起が設けられ、前記遮蔽板の下端部は前記底板の上側面に自重をかけて当接することを特徴とする請求項１または２記載の電源装置。 The bottom plate and the printed circuit board are positioned parallel to each other, the printed circuit board is provided above the bottom plate, the end of the printed circuit board is positioned inside the end of the bottom plate, and the shielding member includes A shielding plate provided so as to intersect with the printed circuit board and having a lower end contacting the upper surface of the bottom plate and an upper end projecting upward from the upper surface of the printed circuit board, and a lower end of the shielding plate. A connecting portion protruding toward a position facing the opening of the printed circuit board along the upper side surface of the bottom plate, and an insertion protrusion provided at the tip of the connecting portion and inserted and fitted into the opening from below The power supply apparatus according to claim 1, wherein a lower end portion of the shielding plate abuts against an upper side surface of the bottom plate with its own weight.

前記開口部は、前記プリント基板の端部に開放された小幅部と、この小幅部に連通して側方に広がった大幅部とからなることを特徴とする請求項１記載の電源装置。

2. The power supply device according to claim 1, wherein the opening includes a small width portion opened to an end portion of the printed circuit board and a large portion that communicates with the small width portion and widens laterally.