JP4239871B2

JP4239871B2 - Discharge lamp starting device, discharge lamp lighting device, vehicle headlamp apparatus, and vehicle

Info

Publication number: JP4239871B2
Application number: JP2004093335A
Authority: JP
Inventors: 健一 ▲高▼松; 英毅濱田; 智之中野; 公明中田; 瑞人井田; 久尚梶浦; 和彦絹谷; 昌紀佐藤
Original assignee: Panasonic Corp; Matsushita Electric Works Ltd
Current assignee: Panasonic Corp; Panasonic Electric Works Co Ltd
Priority date: 2004-03-26
Filing date: 2004-03-26
Publication date: 2009-03-18
Anticipated expiration: 2024-03-26
Also published as: JP2005285363A

Description

本発明は、放電灯始動装置および放電灯点灯装置および車両用前照灯器具および車両に関するものである。 The present invention relates to a discharge lamp starting device, a discharge lamp lighting device, a vehicle headlamp, and a vehicle.

従来より、図２３に示すような回路構成を有する放電灯始動装置が提供されている。この放電灯始動装置Ａは、メタルハライドランプのような放電灯Ｌａを始動するために放電灯Ｌａに高圧パルスを印加するものであり、入力端子ｔ１１，ｔ１３間に接続された充電コンデンサＣ１と、この充電コンデンサＣ１に並列に接続されたパルストランスＰＴの１次巻線ｎ１と放電ギャップＳＧとの直列回路と、入力端子ｔ１１と出力端子ｔ２１との間に接続されたパルストランスＰＴの２次巻線ｎ２とを備えている。そして、入力端子ｔ１１〜ｔ１３にはインバータ回路ＩＮＶの出力端が接続され、出力端子ｔ２１，ｔ２２間に放電灯Ｌａが接続されている。また、入力端子ｔ１３と出力端子ｔ２２との間は短絡されている。 Conventionally, a discharge lamp starting device having a circuit configuration as shown in FIG. 23 has been provided. The discharge lamp starting device A applies a high-pressure pulse to the discharge lamp La to start a discharge lamp La such as a metal halide lamp, and includes a charging capacitor C1 connected between input terminals t11 and t13, A series circuit of the primary winding n1 of the pulse transformer PT and the discharge gap SG connected in parallel to the charging capacitor C1, and the secondary winding of the pulse transformer PT connected between the input terminal t11 and the output terminal t21. n2. The output terminal of the inverter circuit INV is connected to the input terminals t11 to t13, and the discharge lamp La is connected between the output terminals t21 and t22. Further, the input terminal t13 and the output terminal t22 are short-circuited.

ここで、ランプ始動時にインバータ回路ＩＮＶから入力端子ｔ１１，ｔ１３を介して充電コンデンサＣ１に充電電流が供給されて、充電コンデンサＣ１の両端電圧が所定の電圧に達すると、放電ギャップＳＧが放電してパルストランスＰＴの１次巻線ｎ１に電流が流れて、２次巻線ｎ２に高圧パルスが発生し、出力端子ｔ２１，ｔ２２間に接続された放電灯Ｌａに高圧パルスを印加して放電灯Ｌａを始動させるのである。 Here, when the charging current is supplied from the inverter circuit INV to the charging capacitor C1 through the input terminals t11 and t13 at the time of starting the lamp, and the voltage across the charging capacitor C1 reaches a predetermined voltage, the discharge gap SG is discharged. A current flows through the primary winding n1 of the pulse transformer PT, a high-pressure pulse is generated in the secondary winding n2, and the high-pressure pulse is applied to the discharge lamp La connected between the output terminals t21 and t22 to discharge the discharge lamp La. Is started.

ところで近年、自動車の前照灯にメタルハライドランプなどの高輝度の放電灯が使用されるようになり、このような前照灯器具では器具の収納スペースが限られるため、放電灯Ｌａを装着するソケットの内部に、放電灯Ｌａに高圧パルスを印加する上記の回路を収納した放電灯始動装置が従来より提案されている（例えば特許文献１参照）。 In recent years, high-intensity discharge lamps such as metal halide lamps have been used for automobile headlamps, and in such headlamp fixtures, the storage space for the appliance is limited, so a socket for mounting the discharge lamp La is used. In the past, a discharge lamp starting device has been proposed in which the above-described circuit for applying a high-pressure pulse to the discharge lamp La is housed (see, for example, Patent Document 1).

図２４はこのような放電灯始動装置の外観図であり、ソケット本体５０の外郭は上カバー５０ａと下カバー５０ｂとで構成され、上カバー５０ａに設けた絶縁円筒５０ｃから、内部に収納した高圧パルス発生部５４のソケット口５１が露出している。またソケット本体５０には、インバータ回路ＩＮＶからの電線を接続するためのコネクタ５２が設けられており、コネクタ５２には上記の入力端子ｔ１１〜ｔ１３を構成する３本の接続端子５３が配置されている。 FIG. 24 is an external view of such a discharge lamp starting device. The outer shell of the socket main body 50 is composed of an upper cover 50a and a lower cover 50b, and a high-pressure housed inside the insulating cylinder 50c provided on the upper cover 50a. The socket port 51 of the pulse generator 54 is exposed. The socket body 50 is provided with a connector 52 for connecting an electric wire from the inverter circuit INV. The connector 52 is provided with three connection terminals 53 constituting the input terminals t11 to t13. Yes.

図２５（ｃ）はソケット本体５０内に収納される高圧パルス発生部５４の外観を示しており、上カバー５０ａの絶縁円筒５０ｃに臨む位置にソケット口５１が設けられるとともに、パルストランスＰＴ、放電ギャップＳＧ、および充電コンデンサＣ１などの回路部品が実装され、高圧パルスを発生する回路が形成されている。ソケット口５１には、放電灯Ｌａの円柱状の口金７０が嵌合する円筒状の外側筒部６３と、口金７０底面を円形に凹没させた凹所と係合する円筒状の内側筒部６４とが同心に形成されており、内側筒部６４の内部には口金７０底面の凹所内に配置された中心電極（図示せず）と電気的に接続するための内側電極６５が配置され、外側筒部６３には口金７０周面の上側部に設けられた外周電極７１と電気的に接続するための外側電極６６が配置されている。そして組立状態において外側筒部６３の外周には上カバー５０ａの絶縁円筒５０ｃが配置されており、絶縁円筒５０ｃが外側電極６６の外側に配置されて、絶縁を確保している。 FIG. 25 (c) shows the appearance of the high-voltage pulse generator 54 accommodated in the socket body 50. A socket port 51 is provided at a position facing the insulating cylinder 50c of the upper cover 50a, and the pulse transformer PT, discharge Circuit parts such as the gap SG and the charging capacitor C1 are mounted to form a circuit that generates a high-voltage pulse. The socket mouth 51 has a cylindrical outer tube portion 63 into which a columnar cap 70 of the discharge lamp La is fitted, and a cylindrical inner tube portion engaged with a recess in which the bottom surface of the cap 70 is recessed in a circle. 64 is formed concentrically, and an inner electrode 65 for electrical connection with a center electrode (not shown) disposed in a recess on the bottom surface of the base 70 is disposed inside the inner cylindrical portion 64, An outer electrode 66 for electrically connecting to the outer peripheral electrode 71 provided on the upper portion of the peripheral surface of the base 70 is disposed in the outer cylindrical portion 63. In the assembled state, the insulating cylinder 50c of the upper cover 50a is disposed on the outer periphery of the outer cylindrical portion 63, and the insulating cylinder 50c is disposed outside the outer electrode 66 to ensure insulation.

この高圧パルス発生部５４は以下の手順で組み立てられる。すなわち、断面形状が長円形状の棒状のフェライトコア５５の外周に平角線よりなる２次巻線ｎ２および１次巻線ｎ１をエッジワイズ巻きし（図２５（ａ）参照）、１次巻線ｎ１の両端６７ａ，６７ｂに接続端子５６，５７を、二次巻線ｎ２の両端６８ａ，６８ｂに接続端子５８，５９をそれぞれ電気的に接続した後、合成樹脂で樹脂封止してトランスブロック６０を形成する（図２５（ｂ）参照）。その後トランスブロック６０を別の樹脂で封止して、ソケット口５１を一体に備える本体部６１を形成し、放電ギャップＳＧや充電コンデンサＣ１などの回路部品を取り付けて、高圧パルス発生部５４の組立を完了する。
特開２００２−２１７０５０号公報 The high voltage pulse generator 54 is assembled in the following procedure. That is, the secondary winding n2 and the primary winding n1 made of a rectangular wire are edgewise wound around the outer periphery of a rod-shaped ferrite core 55 having an elliptical cross section (see FIG. 25A). The connection terminals 56 and 57 are electrically connected to both ends 67a and 67b of n1, and the connection terminals 58 and 59 are electrically connected to both ends 68a and 68b of the secondary winding n2, respectively. (See FIG. 25B). After that, the transformer block 60 is sealed with another resin to form the main body 61 integrally including the socket port 51, and circuit components such as the discharge gap SG and the charging capacitor C1 are attached to assemble the high voltage pulse generator 54. To complete.
JP 2002-2107050 A

上記構成の放電灯始動装置では、高電圧を発生するパルストランスＰＴを樹脂封止してトランスブロック６０を形成した後、このトランスブロック６０を別の樹脂で封止してソケット本体６１を形成しており、高圧部を２重に封止して絶縁しているため、パルストランスＰＴを封止する樹脂と、ソケット本体６１を形成する樹脂の間に界面ができ、この界面を伝って２次側の接続端子５８と１次側の接続端子５７との間で高電圧が漏洩する可能性があった。そのため、両端子５７，５８間の沿面距離を確保するために、トランスブロック６０の表面に複数の凹溝６２を形成して、凹凸形状を設ける必要があり、このような凹凸形状を形成すると、トランスブロック６０を封止する樹脂の厚みを厚くしなければならず、小型化を阻害してしまうという問題があった。 In the discharge lamp starting device configured as described above, the pulse transformer PT that generates high voltage is sealed with resin to form the transformer block 60, and then the transformer block 60 is sealed with another resin to form the socket body 61. Since the high voltage portion is double sealed and insulated, an interface is formed between the resin that seals the pulse transformer PT and the resin that forms the socket body 61, and the secondary is transmitted along this interface. There is a possibility that a high voltage leaks between the connection terminal 58 on the side and the connection terminal 57 on the primary side. Therefore, in order to ensure the creepage distance between both terminals 57 and 58, it is necessary to form a plurality of concave grooves 62 on the surface of the transformer block 60 to provide a concave and convex shape. When such a concave and convex shape is formed, The thickness of the resin that seals the transformer block 60 has to be increased, which hinders downsizing.

また、パルストランスＰＴの２次巻線ｎ２の一端に設けた接続端子５８は、放電灯Ｌａの口金部の底面中央に設けられた中心電極に接続され、パルストランスＰＴにより発生される高圧パルスを放電灯Ｌａの中心電極に印加するのであるが、口金部の周面に設けられた外周電極との間の絶縁距離を確保するために、接続端子５８と外周電極との間には円筒状の内側筒部６４および外側筒部６３が二重に設けられている。ここで、ソケット口５１に設けた内側筒部６４は口金７０底面の凹部に嵌合して、沿面距離を確保しているが、口金７０底面の凹部と嵌合させるために内側筒部６４の高さをある程度高くする必要があり、しかもソケット口５１とトランスブロック６０とは放電灯Ｌａの装着方向と直交する平面内で一部が重なるように配置されているので、放電灯Ｌａの装着方向においてソケット本体５０の厚み寸法が大きくなり、薄型化の要求を満たせないという問題があった。 A connection terminal 58 provided at one end of the secondary winding n2 of the pulse transformer PT is connected to a center electrode provided at the center of the bottom surface of the base of the discharge lamp La, and a high-voltage pulse generated by the pulse transformer PT is received. Although it is applied to the center electrode of the discharge lamp La, a cylindrical shape is provided between the connection terminal 58 and the outer peripheral electrode in order to ensure an insulation distance between the outer peripheral electrode provided on the peripheral surface of the base part. The inner cylinder part 64 and the outer cylinder part 63 are provided twice. Here, the inner cylindrical portion 64 provided in the socket mouth 51 is fitted into the recess on the bottom surface of the base 70 to ensure a creepage distance, but the inner cylindrical portion 64 of the inner cylindrical portion 64 is fitted to the concave portion on the bottom surface of the base 70. Since the height needs to be increased to some extent, and the socket 51 and the transformer block 60 are arranged so as to partially overlap in a plane orthogonal to the mounting direction of the discharge lamp La, the mounting direction of the discharge lamp La However, the thickness dimension of the socket body 50 is large, and there is a problem that the demand for thinning cannot be satisfied.

また、パルストランスＰＴはフェライトコア５５の断面形状を長円形状として薄型化を図っていたが、平角線をエッジワイズ巻きする際に、フェライトコア５５の断面で曲率半径が最も小さくなる角部で、平角線の絶縁樹脂の伸び率が大きくなったり、絶縁皮膜が破れたりして、絶縁性の確保が困難になるため、フェライトコア５５の薄型化には限界があり、ソケット本体５０の薄型化の制約となっていた。 In addition, the pulse transformer PT is thinned by making the cross-sectional shape of the ferrite core 55 into an oval shape. However, when winding a rectangular wire edgewise, the pulse transformer PT has a corner portion where the radius of curvature is the smallest in the cross-section of the ferrite core 55. Further, since the elongation rate of the insulating resin of the rectangular wire becomes large or the insulating film is broken and it becomes difficult to ensure insulation, there is a limit to making the ferrite core 55 thinner, and the socket body 50 is made thinner. It was a restriction.

本発明は、上記事由に鑑みてなされたものであり、その目的は、絶縁性能を向上させた小型の放電灯始動装置および放電灯点灯装置および車両用前照灯器具および車両を提供することにある。 The present invention has been made in view of the above-described reasons, and an object thereof is to provide a small discharge lamp starting device, a discharge lamp lighting device, a vehicle headlamp apparatus, and a vehicle with improved insulation performance. is there.

請求項１の発明は、放電灯の円柱状の口金が装着される円筒状のソケット口を有し、前記口金の底面に設けた中心電極と電気的に接続するための内側電極が前記ソケット口の底部に配置され、前記口金の周面に設けた外周電極と電気的に接続するための外側電極が前記ソケット口の外周に配置された合成樹脂成形品からなるソケット部と、第１の巻線が巻回されて、前記放電灯の装着方向と略直交する平面内で前記ソケット口の外周近傍に配置される磁気コアと、前記第１の巻線の一端と前記内側電極の間を電気的に接続する導電部と、前記ソケット部に合成樹脂で一体成形されて前記磁気コアと前記第１の巻線と前記導電部とを樹脂封止する封止部と、前記封止部において前記第１の巻線を封止する部位の外面に巻回されて、前記第１の巻線とともに前記放電灯に始動パルスを与えるパルストランスを構成する第２の巻線とを備え、前記外側電極と前記導電部とは、前記ソケット口の中心を挟んで前記ソケット口の外周の同一直径上に各々配置されることを特徴とする。 The invention according to claim 1 has a cylindrical socket port to which a cylindrical cap of a discharge lamp is mounted, and an inner electrode for electrically connecting to a center electrode provided on the bottom surface of the cap is the socket port. A socket part made of a synthetic resin molded product in which an outer electrode for electrical connection with an outer peripheral electrode provided on the peripheral surface of the base is disposed on the outer periphery of the socket opening, and a first winding A wire is wound between the one end of the first winding and the inner electrode between the magnetic core disposed in the vicinity of the outer periphery of the socket opening in a plane substantially orthogonal to the mounting direction of the discharge lamp. Electrically connecting the conductive portion, a sealing portion integrally molded with the socket portion with a synthetic resin, and sealing the magnetic core, the first winding, and the conductive portion; and The first winding is wound around the outer surface of the portion that seals the first winding. And a second winding that constitutes a pulse transformer that applies a starting pulse to the discharge lamp, and the outer electrode and the conductive portion are on the same diameter on the outer periphery of the socket port across the center of the socket port. Are arranged respectively.

この発明によれば、磁気コアに巻回された第１の巻線と、第１の巻線の一端と内側電極の間を電気的に接続する導電部とを樹脂封止して封止部を形成するとともに、第１の巻線を封止する封止部の部位の外面に第２の巻線を巻回して第１の巻線とともに放電灯に始動パルスを与えるパルストランスを構成しており、第１の巻線と導電部とを１種類の樹脂で封止しているので、従来のように２種類の樹脂で封止した場合のように２種類の樹脂の界面を伝って漏電が発生するのを防止でき、したがって従来のように封止樹脂の表面に凹凸形状を設ける必要がないから、封止部を小型にでき、絶縁性を向上させた小型の放電灯始動装置を提供することができる。また磁気コアは、放電灯の装着方向と略直交する平面内でソケット口の外周近傍に配置されているので、放電灯の装着方向において磁気コアとソケット口とを一部重ね合わせて配置することができ、放電灯の装着方向における厚み寸法を小さくできるという効果もある。さらに、第１の巻線の一端と導電部周辺の高電圧領域から外周電極を離して配置しているので、電極間の絶縁性能の確保が容易となり、さらなる小型化が可能となる。 According to the present invention, the first winding wound around the magnetic core and the conductive portion that electrically connects one end of the first winding and the inner electrode are sealed with the resin. And forming a pulse transformer that winds the second winding around the outer surface of the sealing portion that seals the first winding and applies a starting pulse to the discharge lamp together with the first winding. In addition, since the first winding and the conductive portion are sealed with one type of resin, the leakage current is transmitted through the interface between the two types of resin as in the case of sealing with two types of resin as in the past. Therefore, there is no need to provide a concave-convex shape on the surface of the sealing resin as in the prior art. Therefore, a compact discharge lamp starting device that can reduce the size of the sealing portion and improve insulation is provided. can do. In addition, since the magnetic core is disposed in the vicinity of the outer periphery of the socket port in a plane substantially orthogonal to the mounting direction of the discharge lamp, the magnetic core and the socket port must be partially overlapped in the mounting direction of the discharge lamp. And the thickness dimension in the mounting direction of the discharge lamp can be reduced. Furthermore, since the outer peripheral electrode is arranged away from the one end of the first winding and the high voltage region around the conductive portion, it is easy to ensure the insulation performance between the electrodes, and further miniaturization is possible.

請求項２の発明は、請求項１において、前記ソケット部は、円筒状の第１の筒体と、該第１の筒体内に形成された円筒状の第２の筒体とを備え、前記外側電極は前記第１の筒体の外周に配置され、前記内側電極は前記第２の筒体内に配置され、前記第１の筒体の中心と前記第２の筒体の中心とは互いにずれていることを特徴とする。 According to a second aspect of the present invention, in the first aspect, the socket portion includes a cylindrical first cylindrical body, and a cylindrical second cylindrical body formed in the first cylindrical body, The outer electrode is disposed on the outer periphery of the first cylinder, the inner electrode is disposed in the second cylinder, and the center of the first cylinder and the center of the second cylinder are shifted from each other. It is characterized by.

この発明によれば、外側電極を高電圧領域からさらに離して配置することができ、絶縁性能がさらに向上する。 According to the present invention, the outer electrode can be arranged further away from the high voltage region, and the insulation performance is further improved.

請求項３の発明は、請求項１において、前記ソケット部は、円筒状の第１の筒体と、該第１の筒体内に形成された円筒状の第２の筒体とを備え、前記外側電極は前記第１の筒体の外周に配置され、前記内側電極は前記第２の筒体内に配置され、前記第１の筒体の中心を挟んで前記外側電極に対向する前記第１の筒体の内側面に突部を設けたことを特徴とする。 The invention of claim 3 is the invention according to claim 1, wherein the socket portion includes a cylindrical first cylinder and a cylindrical second cylinder formed in the first cylinder, The outer electrode is disposed on the outer periphery of the first cylinder, the inner electrode is disposed in the second cylinder, and the first electrode is opposed to the outer electrode across the center of the first cylinder. A protrusion is provided on the inner surface of the cylindrical body.

この発明によれば、放電灯とソケット部との各中心位置を合わせて、放電灯の電極とソケット部の電極との接触状態を安定させることができる。 According to the present invention, it is possible to stabilize the contact state between the electrode of the discharge lamp and the electrode of the socket part by aligning the center positions of the discharge lamp and the socket part.

請求項４の発明は、請求項１乃至３いずれかにおいて、前記第２の巻線に通電することで前記第１の巻線に始動パルスを発生させる始動回路を前記ソケット部の底面近傍に備え、前記始動回路の少なくとも一部、および前記第２の巻線の少なくとも一部を絶縁物で封止することを特徴とする。 According to a fourth aspect of the present invention, in any one of the first to third aspects, a start circuit for generating a start pulse in the first winding by energizing the second winding is provided near the bottom surface of the socket portion. The at least part of the starting circuit and the at least part of the second winding are sealed with an insulator.

この発明によれば、コロナ放電の原因となる装置内の空気を排除することができる。 According to the present invention, air in the apparatus that causes corona discharge can be eliminated.

請求項５の発明は、請求項１乃至３いずれかにおいて、前記第１の巻線の一端と前記内側電極と前記導電部との周辺を絶縁物で封止することを特徴とする。 According to a fifth aspect of the present invention, in any one of the first to third aspects, the periphery of one end of the first winding, the inner electrode, and the conductive portion is sealed with an insulator.

この発明によれば、コロナ放電の原因となる装置内の空気を排除しつつ、絶縁物の量を削減することができ、軽量化を図ることができる。 According to the present invention, the amount of the insulator can be reduced and the weight can be reduced while excluding air in the apparatus that causes corona discharge.

請求項６の発明は、請求項４または５において、上記絶縁物で封止する領域と封止しない領域とを分離する手段を設けることを特徴とする。 A sixth aspect of the present invention is characterized in that in the fourth or fifth aspect, means for separating the region sealed with the insulator and the region not sealed is provided.

請求項７の発明は、請求項１乃至６いずれかにおいて、互いに組み合わせることで本装置を覆う導電性の第１のカバーと第２のカバーとを備え、前記第１，第２のカバーと本装置との間の隙間の少なくとも一部を樹脂で埋めることを特徴とする。 A seventh aspect of the present invention is the method according to any one of the first to sixth aspects, further comprising a conductive first cover and a second cover that cover the apparatus by being combined with each other, and the first and second covers and the book. It is characterized in that at least a part of the gap between the apparatus is filled with resin.

この発明によれば、コロナ放電の原因となるカバー内の空気を排除することができる。 According to the present invention, air in the cover that causes corona discharge can be eliminated.

請求項８の発明は、請求項７において、前記第１のカバーと前記第２のカバーとのうち少なくとも一方は、組み合わせた状態で他方に当接するように端部をカーリングさせることを特徴とする。 The invention of claim 8 is characterized in that, in claim 7, at least one of the first cover and the second cover is curled at an end so as to contact the other in a combined state. .

この発明によれば、第１のカバーと第２のカバーとの間の電気的接触状態を良好にして、第１のカバー−第２のカバー間のインピーダンスが低くなるので、ノイズシールド効果が向上する。 According to the present invention, since the electrical contact state between the first cover and the second cover is improved and the impedance between the first cover and the second cover is reduced, the noise shielding effect is improved. To do.

請求項９の発明は、請求項７または８において、前記第１のカバーと前記第２のカバーとのうち少なくとも一方は磁性体からなることを特徴とする。 A ninth aspect of the invention is characterized in that, in the seventh or eighth aspect, at least one of the first cover and the second cover is made of a magnetic material.

この発明によれば、パルス電圧の高電圧化を図ることができる。 According to the present invention, the pulse voltage can be increased.

請求項１０の発明は、請求項１〜９の何れか１つの放電灯始動装置を用いたことを特徴とする。 The invention of claim 10 uses the discharge lamp starting device according to any one of claims 1 to 9.

この発明によれば、請求項１乃至９いずれかと同様の効果を奏する放電灯点灯装置を提供できる。 According to this invention, it is possible to provide a discharge lamp lighting device having the same effects as any one of the first to ninth aspects.

請求項１１の発明は、請求項１０記載の放電灯点灯装置を用いたことを特徴とする。 The invention of claim 11 is characterized in that the discharge lamp lighting device according to claim 10 is used.

この発明によれば、請求項１乃至９いずれかと同様の効果を奏する車両用前照灯器具を提供できる。 According to this invention, the vehicle headlamp apparatus having the same effects as any one of claims 1 to 9 can be provided.

請求項１２の発明は、請求項１１記載の車両用前照灯器具を用いたことを特徴とする。 The invention of claim 12 is characterized in that the vehicle headlamp apparatus according to claim 11 is used.

この発明によれば、請求項１乃至９いずれかと同様の効果を奏する車両を提供できる。 According to the present invention, a vehicle having the same effects as any one of claims 1 to 9 can be provided.

以上説明したように、本発明では、磁気コアに巻回された第１の巻線と、第１の巻線の一端と内側電極の間を電気的に接続する導電部とを樹脂封止して封止部を形成するとともに、第１の巻線を封止する封止部の部位の外面に第２の巻線を巻回して第１の巻線とともに放電灯に始動パルスを与えるパルストランスを構成しており、第１の巻線と導電部とを１種類の樹脂で封止しているので、従来のように２種類の樹脂で封止した場合のように２種類の樹脂の界面を伝って漏電が発生するのを防止でき、したがって従来のように封止樹脂の表面に凹凸形状を設ける必要がないから、封止部を小型にでき、絶縁性を向上させた小型の放電灯始動装置を提供することができるという効果がある。また磁気コアは、放電灯の装着方向と略直交する平面内でソケット口の外周近傍に配置されているので、放電灯の装着方向において磁気コアとソケット口とを一部重ね合わせて配置することができ、放電灯の装着方向における厚み寸法を小さくできるという効果もある。さらに、第１の巻線の一端と導電部周辺の高電圧領域から外周電極を離して配置しているので、電極間の絶縁性能の確保が容易となり、さらなる小型化が可能となるという効果もある。 As described above, in the present invention, the first winding wound around the magnetic core and the conductive portion that electrically connects one end of the first winding and the inner electrode are resin-sealed. A pulse transformer that forms a sealing portion and winds a second winding around the outer surface of the portion of the sealing portion that seals the first winding, and applies a starting pulse to the discharge lamp together with the first winding. Since the first winding and the conductive portion are sealed with one type of resin, the interface between the two types of resin as in the case of sealing with two types of resin as in the prior art. Therefore, it is not necessary to provide an uneven shape on the surface of the sealing resin as in the prior art, so that the sealing portion can be made smaller and a small discharge lamp with improved insulation. There is an effect that a starting device can be provided. In addition, since the magnetic core is disposed in the vicinity of the outer periphery of the socket port in a plane substantially orthogonal to the mounting direction of the discharge lamp, the magnetic core and the socket port must be partially overlapped in the mounting direction of the discharge lamp. And the thickness dimension in the mounting direction of the discharge lamp can be reduced. Further, since the outer peripheral electrode is arranged away from the one end of the first winding and the high voltage region around the conductive portion, it is easy to ensure the insulation performance between the electrodes, and further miniaturization is possible. is there.

以下、本発明の実施の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.

（実施形態１）
本発明の実施形態１を図１〜図１２に基づいて説明する。本実施形態の放電灯始動装置Ａは、メタルハライドランプのような放電灯Ｌａを始動するために放電灯Ｌａに高圧パルスを印加するものであり、高圧ブロック１と、低圧回路ブロック２と、上面樹脂カバー３と、下面樹脂カバー４と、上面シールドカバー５と、下面シールドカバー６とを主要な構成として有する。尚、本実施形態の放電灯始動装置Ａは従来技術で説明した図２３に示す放電灯始動装置とほぼ同じ回路構成を有しており、本実施形態では図２３の回路において、パルス発生時のバイパスループを形成するバイパスコンデンサＣ２を入力端子ｔ１１，ｔ１２間に接続してある。 (Embodiment 1)
Embodiment 1 of this invention is demonstrated based on FIGS. The discharge lamp starting device A of the present embodiment applies a high-pressure pulse to the discharge lamp La to start a discharge lamp La such as a metal halide lamp, and includes a high-pressure block 1, a low-pressure circuit block 2, and an upper surface resin. The cover 3, the lower surface resin cover 4, the upper surface shield cover 5, and the lower surface shield cover 6 are included as main components. Note that the discharge lamp starting device A of the present embodiment has substantially the same circuit configuration as the discharge lamp starting device shown in FIG. 23 described in the prior art. In the present embodiment, in the circuit of FIG. A bypass capacitor C2 forming a bypass loop is connected between the input terminals t11 and t12.

図２は高圧ブロック１の製造工程を示しており、高圧ブロック１は、１０^３Ωｍ以上の固有抵抗を有する棒状のロッド型のフェライトコア７と、このフェライトコア７の側面に、絶縁部材としてのボビンを使用しないで平角線を１層にエッジワイズ巻きにして成る第１の巻線８（２次巻線ｎ２）と、磁性材料により矩形板状に形成された高圧ヨーク４０と、フェライトコア７および高圧ヨーク４０を保持する樹脂成型品からなるコアホルダ１０と、コアホルダ１０に取り付けられて第１の巻線８の両端にそれぞれ電気的に接続される２つの端子１１，１２とを備える。なお本実施形態ではフェライトコア７に直接第１の巻線８を巻回しているが、ボビンを用いて第１の巻線８を巻回するようにしても良い。 FIG. 2 shows a manufacturing process of the high-voltage block 1. The high-pressure block 1 has a rod-shaped rod-shaped ferrite core 7 having a specific resistance of 10 ³ Ωm or more and a side surface of the ferrite core 7 as an insulating member. A first winding 8 (secondary winding n2) in which a rectangular wire is edgewise wound in one layer without using a bobbin, a high-voltage yoke 40 formed into a rectangular plate shape from a magnetic material, and a ferrite core 7 And a core holder 10 made of a resin molded product that holds the high-pressure yoke 40, and two terminals 11 and 12 that are attached to the core holder 10 and electrically connected to both ends of the first winding 8. In the present embodiment, the first winding 8 is wound directly around the ferrite core 7, but the first winding 8 may be wound using a bobbin.

コアホルダ１０は、フェライトコア７の長手方向において対向配置され、図中上側に開放された保持溝１３ａを有する一対の側壁１３，１３と、フェライトコア７の長手方向に沿うように配置されて両側壁１３の下端部の間をそれぞれ連結する一対の連結片１４と、一対の連結片１４の間を橋絡する橋絡部１５と、一方の側壁１３と一体的に形成され、上面およびフェライトコア７の長手方向における両側面が開放された略箱状のヨーク収納部１６とを備える。 The core holder 10 is disposed so as to face the ferrite core 7 in the longitudinal direction and has a pair of side walls 13 and 13 having a holding groove 13a opened on the upper side in the figure, and is disposed along the longitudinal direction of the ferrite core 7 so as to be disposed on both side walls. 13 is formed integrally with a pair of connecting pieces 14 for connecting the lower end portions of each of 13, a bridging portion 15 for bridging between the pair of connecting pieces 14, and one side wall 13. And a substantially box-shaped yoke housing portion 16 having both side surfaces opened in the longitudinal direction.

端子１１は、第１の巻線８の低圧側の端部８ａが挿入されるコ字状の挟持片１１ａを有し、この挟持片１１ａと連続一体に形成された圧入片１１ｂを、端部８ａ近傍に配置されるコアホルダ１０の部位（側壁１３）に設けた圧入孔１７に圧入することによってコアホルダ１０に固定される。また端子１２は、第１の巻線８の高圧側の端部８ｂが挿入されるコ字状の挟持片１２ａを有し、この挟持片１２ａと連続一体に形成された圧入片１２ｂを、端部８ｂ近傍に配置されるコアホルダ１０の部位（ヨーク収納部１６）に設けた圧入孔１８に圧入することによってコアホルダ１０に固定される。 The terminal 11 has a U-shaped sandwiching piece 11a into which the low-voltage end 8a of the first winding 8 is inserted. The press-fitting piece 11b formed integrally with the sandwiching piece 11a is connected to the end 11a. The core holder 10 is fixed to the core holder 10 by press-fitting into a press-fitting hole 17 provided in a portion (side wall 13) of the core holder 10 disposed in the vicinity of 8a. The terminal 12 has a U-shaped sandwiching piece 12a into which the high-voltage side end 8b of the first winding 8 is inserted, and the press-fitting piece 12b formed integrally with the sandwiching piece 12a is connected to the end 12b. The core holder 10 is fixed to the core holder 10 by press-fitting into a press-fitting hole 18 provided in a portion (yoke housing portion 16) of the core holder 10 disposed near the portion 8b.

上述のような高圧ブロック１を組み立てるに当たっては、先ずコアホルダ１０の圧入孔１７，１８に端子１１，１２の圧入片１１ｂ，１２ｂを圧入して、端子１１，１２を保持させるとともに、ヨーク収納部１６内に上側から高圧ヨーク４０を挿入して高圧ヨーク４０をコアホルダ１０に収納保持させた後、各側壁１３に設けた保持溝１３ａ内に上側からフェライトコア７の端部をそれぞれ挿入して、フェライトコア７をコアホルダ１０に保持させる。このとき各保持溝１３ａの開口縁に設けた爪１３ｂがフェライトコア７の端部に係止することで、フェライトコア７の抜け止めが行われる。またフェライトコア７の長手方向における一方の端面に対向して高圧ヨーク４０が配置されている。ここで図６（ａ）（ｂ）は、フェライト７、第１の巻線８、端子１２の上記接続を示す概略図であり、端子１２は後述する内側電極２４に接続している。 In assembling the high-pressure block 1 as described above, first, the press-fitting pieces 11 b and 12 b of the terminals 11 and 12 are press-fitted into the press-fitting holes 17 and 18 of the core holder 10 to hold the terminals 11 and 12, and the yoke storage portion 16. After inserting the high-pressure yoke 40 from above into the core holder 10 and holding and holding the high-pressure yoke 40 in the core holder 10, the end of the ferrite core 7 is inserted into the holding groove 13 a provided in each side wall 13 from above, respectively. The core 7 is held by the core holder 10. At this time, the nail | claw 13b provided in the opening edge of each holding groove | channel 13a latches to the edge part of the ferrite core 7, and the retaining of the ferrite core 7 is performed. Further, a high-pressure yoke 40 is disposed so as to face one end face in the longitudinal direction of the ferrite core 7. Here, FIGS. 6A and 6B are schematic views showing the connection of the ferrite 7, the first winding 8, and the terminal 12, and the terminal 12 is connected to an inner electrode 24 described later.

そして、コアホルダ１０にフェライトコア７および高圧ヨーク４０を保持させた後、絶縁性を有する合成樹脂により樹脂封止して封止部１９を形成し、封止部１９の表面に第１の巻線８の外周に配置されるように第２の巻線９（１次巻線ｎ１）を巻回し（図３（ｃ）参照）、第１および第２の巻線８，９とフェライトコア７とで高圧パルスを発生するパルストランスＰＴを構成する。ここで、封止部１９の第２の巻線９が巻回される巻回部１９ａは略楕円の棒状に成形されており、封止部１９を樹脂成形する際には、放電灯Ｌａの口金７０が装着されるソケット口２０ａを有するソケット部２０が封止部１９の成型樹脂により形成されており、封止部１９とソケット部２０とで高圧ブロック１の本体部２１が構成されている。図７（ａ）（ｂ）は、フェライト７、第１の巻線８、端子１２が封止部１９に封止された上記状態を示す概略図である。 Then, after holding the ferrite core 7 and the high-pressure yoke 40 on the core holder 10, a sealing portion 19 is formed by resin sealing with an insulating synthetic resin, and the first winding is formed on the surface of the sealing portion 19. The second winding 9 (primary winding n1) is wound so as to be disposed on the outer periphery of the coil 8 (see FIG. 3C), and the first and second windings 8, 9 and the ferrite core 7 A pulse transformer PT that generates a high-voltage pulse is configured. Here, the winding part 19a around which the second winding 9 of the sealing part 19 is wound is formed in a substantially elliptical rod shape, and when the sealing part 19 is molded with resin, A socket part 20 having a socket opening 20a to which a base 70 is attached is formed by molding resin of the sealing part 19, and the main body part 21 of the high-pressure block 1 is constituted by the sealing part 19 and the socket part 20. . FIGS. 7A and 7B are schematic views showing the above-described state in which the ferrite 7, the first winding 8, and the terminal 12 are sealed by the sealing portion 19.

ソケット口２０ａは口金７０の外周面と嵌合する円筒状の外筒部２２（第１の筒体）の内側に、口金７０の底面に設けた環状の溝と嵌合する円筒状の内筒部２３（第２の筒体）が形成され、これら２つの筒部２２，２３が同心に配置されている。そして、内筒部２３の底部には端子１２に設けた接続片１２ｃの先端が露出しており、先端が互いに近付く向きに突出する弾接ばね片を具備した内側電極２４が接続片１２ｃに電気的に接続されている。つまり、放電灯Ｌａの中心電極に電気的に接続される内側電極２４は端子１２を介して第１の巻線８の高圧側の端部８ｂに電気的に接続されている。 The socket port 20 a is a cylindrical inner tube that fits into an annular groove provided on the bottom surface of the base 70 inside the cylindrical outer tube part 22 (first tube) that fits the outer peripheral surface of the base 70. A portion 23 (second cylindrical body) is formed, and these two cylindrical portions 22 and 23 are arranged concentrically. The tip of the connection piece 12c provided on the terminal 12 is exposed at the bottom of the inner cylinder portion 23, and the inner electrode 24 having a resilient spring piece protruding in a direction in which the tips approach each other is electrically connected to the connection piece 12c. Connected. That is, the inner electrode 24 that is electrically connected to the center electrode of the discharge lamp La is electrically connected to the high-voltage end 8 b of the first winding 8 via the terminal 12.

また低圧側の端部８ａに電気的に接続された端子１１の圧入片１１ｂの先端部は、封止部１９の表面から外側に突出しており、外側に突出した圧入片１１ｂの先端部が接続端子１１ｃとなる。また外筒部２２の外側には、口金７０の周面に設けた外周電極に電気的に接続される一対の外側電極２５が配置されている。各外側電極２５は、外筒部２２の開口縁に設けた切欠２２ａから内側に突出して外周電極に弾接する弾接ばね部２５ａを２個ずつ備え、外筒部２２に設けた圧入孔（図示せず）に上面側から圧入片２５ｂを圧入することによってソケット口２０ａに固定されている。なお圧入片２５ｂの先端部は圧入孔を貫通してソケット口２０ａの下面側に突出しており、外側に突出する先部が低圧回路ブロック２に電気的に接続するための端子片となっている。 The tip of the press-fitting piece 11b of the terminal 11 electrically connected to the end 8a on the low-pressure side protrudes outward from the surface of the sealing part 19, and the tip of the press-fitting piece 11b protruding outward is connected. It becomes the terminal 11c. A pair of outer electrodes 25 that are electrically connected to outer peripheral electrodes provided on the peripheral surface of the base 70 are disposed outside the outer cylindrical portion 22. Each outer electrode 25 includes two elastic contact spring portions 25a that protrude inward from a notch 22a provided at the opening edge of the outer cylindrical portion 22 and elastically contact the outer peripheral electrode. It is fixed to the socket port 20a by press-fitting the press-fitting piece 25b into the upper surface side (not shown). The tip of the press-fitting piece 25b passes through the press-fitting hole and projects to the lower surface side of the socket port 20a, and the tip projecting outward serves as a terminal piece for electrical connection to the low-voltage circuit block 2. .

一方、低圧回路ブロック２は、図３（ａ）（ｂ）に示すように、リードフレームをインサート成形して形成された基板３６に充電コンデンサＣ１、バイパスコンデンサＣ２、放電ギャップＳＧ、コネクタＣＮなどの回路部品を実装して形成され、第２の巻線９に通電することで第１の巻線８に始動パルスを発生させる始動回路を構成している。なお、プリント配線板からなる基板に上記の各回路部品を実装して低圧回路ブロック２を構成してもよい。 On the other hand, as shown in FIGS. 3A and 3B, the low-voltage circuit block 2 includes a charging capacitor C1, a bypass capacitor C2, a discharging gap SG, a connector CN and the like on a substrate 36 formed by insert molding of a lead frame. A starting circuit is formed by mounting circuit components, and generates a starting pulse in the first winding 8 by energizing the second winding 9. The low-voltage circuit block 2 may be configured by mounting each of the circuit components on a substrate made of a printed wiring board.

上面樹脂カバー３は、図４（ａ）に示すように絶縁性を有する合成樹脂により下面が開口した直方体状に形成され、ソケット口２０ａの外周に配置される絶縁円筒２６が上面に形成されるとともに、コネクタＣＮを挿通させるための切欠２７が一側面の開口縁を矩形状に凹没させることで形成されている。そして、絶縁円筒２６には一端部が上側に開放された複数のガイド溝２８が周方向に沿って形成されており、これらガイド溝２８に放電灯Ｌａの口金７０の周面に設けたガイドピン（図示せず）が係入されるようになっている。また下面樹脂カバー４は絶縁性を有する合成樹脂により形成され、矩形板状の主部２９の周縁部から上側に向かって鍔部３０が突出している。 As shown in FIG. 4A, the upper surface resin cover 3 is formed in a rectangular parallelepiped shape whose lower surface is opened by an insulating synthetic resin, and an insulating cylinder 26 disposed on the outer periphery of the socket port 20a is formed on the upper surface. In addition, a notch 27 for inserting the connector CN is formed by recessing the opening edge on one side in a rectangular shape. The insulating cylinder 26 is formed with a plurality of guide grooves 28 whose one ends are opened upward along the circumferential direction, and guide pins provided on the peripheral surfaces of the cap 70 of the discharge lamp La in the guide grooves 28. (Not shown) is engaged. Further, the lower surface resin cover 4 is formed of an insulating synthetic resin, and a collar portion 30 protrudes upward from the peripheral edge portion of the rectangular plate-shaped main portion 29.

一方、上面シールドカバー５は、図５（ａ）に示すように導電材料により下面が開口した直方体状に形成され、上面には上面樹脂カバー３の絶縁円筒２６の周りを囲む円筒状の筒部３１が形成されている。また下面シールドカバー６は導電材料により形成され、矩形板状の主部３２の周縁部から上側に向かって側部３３が突出されている。そして上面シールドカバー５および下面シールドカバー６の接合部位にはそれぞれコネクタＣＮを挿通させるための矩形状に凹んだ切欠が形成され、これらの切欠の周縁から側方に向かってコネクタＣＮの上下両面をそれぞれ覆うカバー部３４，３５が延出している。 On the other hand, the upper shield cover 5 is formed in a rectangular parallelepiped shape having a lower surface opened by a conductive material as shown in FIG. 5A, and a cylindrical tube portion surrounding the insulating cylinder 26 of the upper resin cover 3 on the upper surface. 31 is formed. The lower shield cover 6 is made of a conductive material, and the side portion 33 protrudes upward from the peripheral edge of the rectangular plate-shaped main portion 32. A rectangular recess for inserting the connector CN is formed at the joining portion of the upper shield cover 5 and the lower shield cover 6, and the upper and lower surfaces of the connector CN are formed laterally from the periphery of these notches. Cover portions 34 and 35 are respectively extended.

而して、放電灯始動装置Ａを組み立てるにあたっては、先ず図３（ｃ）に示すように低圧回路ブロック２の上側に高圧ブロック１を載置し、第２の巻線９の両端部を低圧回路ブロック２に設けた接続片３７に電気的に接続して、第２の巻線９の両端を放電ギャップＳＧの一端と充電コンデンサＣ１の一端とにそれぞれ接続した後（図８（ａ）（ｂ）参照）、図４（ａ）（ｂ）に示すように上面樹脂カバー３および下面樹脂カバー４を上下両側から被せ（図９（ａ）（ｂ）参照）、さらに図５（ａ）（ｂ）に示すように上面シールドカバー５および下面シールドカバー６を上下両側から被せることで、放電灯始動装置Ａの組立が完了する（図１（ａ）（ｂ）参照）。 Thus, when assembling the discharge lamp starting device A, first, as shown in FIG. 3 (c), the high voltage block 1 is placed on the upper side of the low voltage circuit block 2, and both ends of the second winding 9 are connected to the low pressure circuit. After electrically connecting to the connection piece 37 provided in the circuit block 2 and connecting both ends of the second winding 9 to one end of the discharge gap SG and one end of the charging capacitor C1 (FIG. 8A ( 4 (a) and 4 (b), the upper surface resin cover 3 and the lower surface resin cover 4 are covered from the upper and lower sides (see FIGS. 9 (a) and 9 (b)), and FIG. As shown in b), the upper and lower shield covers 5 and 6 are covered from the upper and lower sides, whereby the assembly of the discharge lamp starting device A is completed (see FIGS. 1A and 1B).

そして、本実施形態では、外側電極２５と導電部１２とは、外筒部２２の中心を挟んで外筒部２２の同一直径上に各々配置されており、外側電極２５を高電圧領域Ｈ外に配置している。ここで、高電圧領域Ｈとは、第１の巻線８の高圧側の端部８ｂと、内側電極２４と、第１の巻線８の高圧側の端部８ｂと内側電極２４とを電気的に接続する端子１２とが位置している近傍の領域で、第１の巻線８に放電灯Ｌａを始動させるためのパルス電圧が発生するときには、第１の巻線８の高圧側の端部８ｂ、内側電極２４、端子１２が高電圧となるため、高電圧領域Ｈには、電位の異なる導電物やコロナ放電を誘発する空気層がないことが望ましい。そこで、本実施形態では、外側電極２５を高電圧領域Ｈ外に配置することで、絶縁性能の確保を容易にして小型化を図っている。 In the present embodiment, the outer electrode 25 and the conductive part 12 are respectively disposed on the same diameter of the outer cylinder part 22 with the center of the outer cylinder part 22 interposed therebetween, and the outer electrode 25 is located outside the high voltage region H. Is arranged. Here, the high voltage region H means that the high voltage side end 8b of the first winding 8, the inner electrode 24, the high voltage side end 8b of the first winding 8 and the inner electrode 24 are electrically connected. When the pulse voltage for starting the discharge lamp La is generated in the first winding 8 in the vicinity of the position where the terminal 12 to be connected is located, the end of the first winding 8 on the high voltage side Since the portion 8b, the inner electrode 24, and the terminal 12 are at a high voltage, it is desirable that the high voltage region H does not have conductive materials having different potentials or air layers that induce corona discharge. Therefore, in the present embodiment, the outer electrode 25 is disposed outside the high voltage region H, so that the insulation performance can be easily ensured and the size can be reduced.

また本実施形態では、フェライトコア７に巻回された第１の巻線８と、第１の巻線８の高圧側の端部８ｂと内側電極２４との間を電気的に接続する端子１２とを樹脂封止して封止部１９を形成し、この封止部１９の巻回部１９ａ表面に第１の巻線８の外周に配置されるように第２の巻線９を巻回して、パルストランスＰＴを形成しており、２種類の樹脂で封止した従来例のように２種類の樹脂の界面を伝って漏電が発生することがないから、絶縁性能を向上させることができる。また、従来例では絶縁性能を高めるために封止樹脂の表面に凹凸形状を設けて沿面距離を確保しているが、本実施形態では第１の巻線８と端子１２とを１種類の封止樹脂で形成しているので、２種類の樹脂で封止した場合のように樹脂の界面が存在しないから、従来例のように封止樹脂の表面に凹凸形状を形成する必要が無く、絶縁性を向上させた小型の放電灯始動装置Ａを実現できる。またフェライトコア７および第１の巻線８からなる高圧部とソケット口２０ａとは、放電灯Ｌａの装着方向と略直交する平面内において高圧部がソケット口２０ａの外周近傍に、高圧部とソケット口２０ａとが重ならないようにして配置され、且つ、放電灯Ｌａの装着方向において高圧部とソケット口２０ａとを一部重ね合わせて配置しているので、放電灯Ｌａの装着方向における放電灯始動装置Ａの厚み寸法を小さくして、全体の小型化を図ることができる。 Further, in the present embodiment, the first winding 8 wound around the ferrite core 7 and the terminal 12 that electrically connects the end 8b on the high voltage side of the first winding 8 and the inner electrode 24. Is sealed with resin to form a sealing portion 19, and the second winding 9 is wound around the surface of the winding portion 19 a of the sealing portion 19 so as to be disposed on the outer periphery of the first winding 8. In addition, since the pulse transformer PT is formed and no leakage occurs through the interface between the two types of resin as in the conventional example sealed with two types of resin, the insulation performance can be improved. . Further, in the conventional example, in order to improve the insulation performance, the surface of the sealing resin is provided with a concavo-convex shape to ensure the creepage distance. However, in this embodiment, the first winding 8 and the terminal 12 are connected to one type of seal. Since it is formed of a stop resin, there is no resin interface as in the case of sealing with two types of resins, so there is no need to form uneven shapes on the surface of the sealing resin as in the conventional example, and insulation A small discharge lamp starting device A with improved performance can be realized. Further, the high-pressure portion composed of the ferrite core 7 and the first winding 8 and the socket port 20a are arranged so that the high-pressure portion is in the vicinity of the outer periphery of the socket port 20a in a plane substantially orthogonal to the mounting direction of the discharge lamp La. Since the high-pressure portion and the socket port 20a are arranged so as to overlap each other in the mounting direction of the discharge lamp La, the discharge lamp is started in the mounting direction of the discharge lamp La. By reducing the thickness dimension of the device A, the overall size can be reduced.

なお、図４，図５に示す上面樹脂カバー３、下面樹脂カバー４、上面シールドカバー５、下面シールドカバー６と、図１、図６〜図９に示す上面樹脂カバー３、下面樹脂カバー４、上面シールドカバー５、下面シールドカバー６との各形状は、互いに異なる部位があるが、同様の部位には同一の符号を付す。 4 and 5, the upper surface resin cover 3, the lower surface resin cover 4, the upper surface shield cover 5, and the lower surface shield cover 6, and the upper surface resin cover 3 and the lower surface resin cover 4 illustrated in FIGS. Each shape of the upper surface shield cover 5 and the lower surface shield cover 6 has different portions, but the same portions are denoted by the same reference numerals.

ところで本実施形態は、メタルハライドランプのようなＨＩＤランプからなる放電灯Ｌａを始動するために放電灯Ｌａに高圧パルスを印加するものであり、本実施形態を用いた放電灯点灯装置のブロック図を図１０に示す。この放電灯点灯装置は、直流電源Ｅの直流電圧を矩形波電圧に変換して放電灯始動装置Ａに装着された放電灯Ｌａに供給するインバータＩＮＶと、放電灯始動装置Ａとで構成される。 By the way, this embodiment applies a high-pressure pulse to the discharge lamp La in order to start the discharge lamp La which consists of a HID lamp like a metal halide lamp, and the block diagram of the discharge lamp lighting device using this embodiment is shown. As shown in FIG. This discharge lamp lighting device includes an inverter INV that converts a DC voltage of a DC power source E into a rectangular wave voltage and supplies the rectangular wave voltage to a discharge lamp La mounted on the discharge lamp starting device A, and a discharge lamp starting device A. .

また図１１は本実施形態を用いた車両用前照灯器具Ｂの一実施形態を示し、この前照灯器具Ｂは、車体に固定される灯体ハウジング１００の内部に上記の放電灯始動装置Ａと反射板１０１とを収納したものであり、灯体ハウジング１００の前面に設けた開口部にはレンズ１０２が取り付けられている。また灯体ハウジング１００の後部には放電灯Ｌａを交換するための開口部１０４が設けられており、この開口部１０４にはキャップ１０５が被着されている。また灯体ハウジング１００の下側部にはバッテリ（図示せず）から直流電源の供給を受けて動作するインバータＩＮＶが取着されており、このインバータＩＮＶからの電線１０３が放電灯始動装置ＡのコネクタＣＮに接続されている。なお図中の１０６はバッテリからの給電線を接続する接続コネクタである。 FIG. 11 shows an embodiment of a vehicle headlamp fixture B using this embodiment. The headlamp fixture B is mounted on the inside of the lamp housing 100 fixed to the vehicle body, and the discharge lamp starting device described above. A and the reflecting plate 101 are accommodated, and a lens 102 is attached to an opening provided on the front surface of the lamp housing 100. An opening 104 for replacing the discharge lamp La is provided at the rear of the lamp housing 100, and a cap 105 is attached to the opening 104. Further, an inverter INV that operates by receiving a DC power supply from a battery (not shown) is attached to the lower side of the lamp housing 100, and an electric wire 103 from the inverter INV is connected to the discharge lamp starting device A. It is connected to the connector CN. Reference numeral 106 in the figure denotes a connection connector for connecting a power supply line from the battery.

また図１２は上述の車両用前照灯器具Ｂを備えた車両Ｃの一実施形態を示し、車体１１０の前面の左右両側には車両用前照灯器具Ｂが１台ずつ取り付けられている。 FIG. 12 shows an embodiment of a vehicle C provided with the above-described vehicle headlamp fixture B. One vehicle headlamp fixture B is attached to each of the left and right sides of the front surface of the vehicle body 110.

（実施形態２）
図１３は本実施形態の放電灯始動装置Ａを構成する高圧ブロック１を上面からみた概略構成を示しており、実施形態１と異なる点は、外筒部２２の中心と内筒部２３の中心とを互いにずらした偏心状態に配置したもので、その偏心方向は、外側電極２５と内側電極２４とが互いに離れる方向となる。したがって、実施形態１に比べて外側電極２５を高電圧領域Ｈからさらに離すことができ、絶縁性能を確保することがさらに容易となる。 (Embodiment 2)
FIG. 13 shows a schematic configuration of the high-pressure block 1 constituting the discharge lamp starting device A of the present embodiment as viewed from above. The difference from the first embodiment is that the center of the outer cylinder portion 22 and the center of the inner cylinder portion 23 are different. Are arranged in an eccentric state shifted from each other. The eccentric direction is a direction in which the outer electrode 25 and the inner electrode 24 are separated from each other. Therefore, the outer electrode 25 can be further separated from the high voltage region H as compared with the first embodiment, and it becomes easier to ensure the insulation performance.

（実施形態３）
図１４は本実施形態の放電灯始動装置Ａを構成する高圧ブロック１を上面からみた概略構成を示す。ここで、図２２（ａ）（ｂ）に示す装置では２対の外側電極２５を備えて、各一対の外側電極２５は、外筒部２２の中心を挟んで外筒部２２の外周に対向して配置されており、放電灯Ｌａ装着時には、放電灯Ｌａの口金７０の中心と内筒部２３との中心とを、対向配置した外側電極２５の各ばね力によって合致させるセルフセンタリング機能を有している。しかし、実施形態１，２では、外筒部２３の側面に１対の外側電極２５を片側配置しているだけなので、放電灯Ｌａの口金７０は、外側電極２５のばね力によって、外側電極２５から外筒部２２の中心方向へ向かって押しつけられ、放電灯Ｌａの口金７０の中心と内筒部２３の中心とが互いにずれた状態となる。 (Embodiment 3)
FIG. 14 shows a schematic configuration of the high-pressure block 1 constituting the discharge lamp starting device A of the present embodiment as viewed from above. Here, in the apparatus shown in FIGS. 22A and 22B, two pairs of outer electrodes 25 are provided, and each pair of outer electrodes 25 faces the outer periphery of the outer tube portion 22 with the center of the outer tube portion 22 in between. When the discharge lamp La is mounted, it has a self-centering function for matching the center of the base 70 of the discharge lamp La and the center of the inner cylinder portion 23 with each spring force of the outer electrode 25 arranged to face each other. is doing. However, in the first and second embodiments, since the pair of outer electrodes 25 are only arranged on one side of the side surface of the outer cylinder portion 23, the base 70 of the discharge lamp La is moved by the spring force of the outer electrode 25. The center of the base 70 of the discharge lamp La and the center of the inner cylinder 23 are shifted from each other.

そこで、本実施形態では、図１４（ａ）（ｂ）に示すように、外筒部２２の中心を挟んで外側電極２５に対向する外筒部２２の内側面に凸部４１を形成して、外側電極２５と凸部４１とを外筒部２２の側面に互いに対向配置している。したがって、放電灯Ｌａ装着時には、放電灯Ｌａの口金７０は、外側電極２５のばね力と凸部４１の反力とによって、外筒部２２の中心方向に向かって反対方向の力が作用して、放電灯Ｌａの口金７０の中心と内筒部２３の中心とが合致するセルフセンタリング機能を有しており、ソケット部２０と放電灯Ｌａとの各電極同士の接触状態を安定したものにできる。 Therefore, in the present embodiment, as shown in FIGS. 14A and 14B, a convex portion 41 is formed on the inner side surface of the outer cylindrical portion 22 facing the outer electrode 25 with the center of the outer cylindrical portion 22 interposed therebetween. The outer electrode 25 and the convex portion 41 are disposed opposite to each other on the side surface of the outer cylinder portion 22. Accordingly, when the discharge lamp La is mounted, the base 70 of the discharge lamp La is subjected to a force in the opposite direction toward the center of the outer cylinder portion 22 due to the spring force of the outer electrode 25 and the reaction force of the convex portion 41. In addition, the center of the base 70 of the discharge lamp La and the center of the inner cylinder portion 23 have a self-centering function, and the contact state between the electrodes of the socket portion 20 and the discharge lamp La can be stabilized. .

（実施形態４）
高電圧領域Ｈの周辺に空気があるとコロナ放電が発生しやすく、樹脂絶縁の劣化や、第１の巻線８に発生する高圧パルスの減衰の要因となり、放電灯始動装置Ａとして機能不全となる可能性がある。 (Embodiment 4)
If there is air around the high voltage region H, corona discharge is likely to occur, causing deterioration of the resin insulation and attenuation of the high-pressure pulse generated in the first winding 8, and malfunctioning as the discharge lamp starting device A. There is a possibility.

そこで、本実施形態では、図１５（ａ）（ｂ）に示すように、上面樹脂カバー３と下面樹脂カバー４とを組み合わせた樹脂カバー内の全領域、すなわち高電圧領域Ｈに限らず、基板３６上の素子周辺、基板３６下面と下面樹脂カバー４との間等に絶縁物４２を充填して、樹脂カバー内を封止しており、コロナ放電の原因となる上面樹脂カバー３、下面樹脂カバー４内の空気を排除している。 Therefore, in the present embodiment, as shown in FIGS. 15A and 15B, the substrate is not limited to the entire region in the resin cover in which the upper surface resin cover 3 and the lower surface resin cover 4 are combined, that is, the high voltage region H. An insulating material 42 is filled in the periphery of the element 36, between the lower surface of the substrate 36 and the lower surface resin cover 4, and the inside of the resin cover is sealed, and the upper surface resin cover 3 and the lower surface resin that cause corona discharge Air in the cover 4 is excluded.

絶縁物としては、ＢＭＣやエポキシ等の熱硬化性樹脂を使用している。熱硬化性樹脂を用いることで、上面樹脂カバー３、下面樹脂カバー４がない状態でも、金型を用いて絶縁物４２の成形ができるので作業性や生産性がよい。 As the insulator, a thermosetting resin such as BMC or epoxy is used. By using the thermosetting resin, the insulator 42 can be molded using a mold even when the upper surface resin cover 3 and the lower surface resin cover 4 are not provided, so that workability and productivity are good.

また、絶縁物４２として、ウレタンやシリコンのポッティング材を使用すれば、流動性の液状のポッティング材を、充填時や硬化前に真空状態とすることで内部に残存するボイド等の空気層を減らすことができ、コロナ放電抑制効果をより高めることができる。 Further, if a potting material such as urethane or silicon is used as the insulator 42, a fluid liquid potting material is evacuated at the time of filling or before curing to reduce an air layer such as voids remaining inside. And the corona discharge suppression effect can be further enhanced.

さらに、絶縁物４２として、ホットメルトを使用すれば、上面樹脂カバー３、下面樹脂カバー４がない状態で、金型を用いて絶縁物の成形ができるので作業性や生産性がよくなる。また、射出成形に比べて、成形圧力や温度が低いので、部品類への熱的および機械的ストレスを抑制できる。 Furthermore, if hot melt is used as the insulator 42, the insulator can be molded using a mold without the upper surface resin cover 3 and the lower surface resin cover 4, so that workability and productivity are improved. In addition, since the molding pressure and temperature are lower than those of injection molding, thermal and mechanical stress on the parts can be suppressed.

なお、電子部品Ｚ１，Ｚ２は、コンデンサＣ１，Ｃ２、放電ギャップＳＧ等の始動回路を構成する部品である。 The electronic components Z1 and Z2 are components constituting a starting circuit such as capacitors C1 and C2 and a discharge gap SG.

（実施形態５）
実施形態４では、上面樹脂カバー３と下面樹脂カバー４とを組み合わせた樹脂カバー内の全領域に絶縁物を充填したが、本実施形態では図１６（ａ）（ｂ）に示すように、樹脂カバー内の高電圧領域Ｈ周辺のみに絶縁物４２を充填している。したがって、コロナ放電の原因となる上面樹脂カバー３、下面樹脂カバー４内の空気を排除しながら、絶縁物４２の量を低減することができ、製品全体の軽量化を図ることができる。 (Embodiment 5)
In the fourth embodiment, the entire region in the resin cover in which the upper surface resin cover 3 and the lower surface resin cover 4 are combined is filled with an insulator. However, in this embodiment, as shown in FIGS. The insulator 42 is filled only around the high voltage region H in the cover. Therefore, the amount of the insulator 42 can be reduced while eliminating the air in the upper surface resin cover 3 and the lower surface resin cover 4 that causes corona discharge, and the overall weight of the product can be reduced.

絶縁物４２としては、実施形態４と同様に、ＢＭＣやエポキシ等の熱硬化性樹脂、あるいはウレタンやシリコンのポッティング材、あるいはホットメルトを使用する。 As the insulator 42, as in the fourth embodiment, a thermosetting resin such as BMC or epoxy, a potting material of urethane or silicon, or hot melt is used.

（実施形態６）
本実施形態では、図１７に示すように、基板３６の上面、下面に、高電圧領域Ｈと高電圧領域Ｈ以外の領域とを分離する分離壁３６ａ，３６ｂを突設しており、高電圧領域Ｈに充填される絶縁材４２は分離壁３６ａ，３６ｂによって阻止されて、高電圧領域Ｈ以外へは充填されない。すなわち、絶縁物Ｈで封止される領域（高電圧領域Ｈの周辺でコロナ放電が発生しやすい領域）と絶縁物Ｈで封止されない領域（コロナ放電が発生しにくく、空気が存在していても使用上問題とならない領域）とを分離壁３６ａ，３６ｂによって仕切っているのである。その結果、実施形態５と同様に、コロナ放電の原因となる樹脂カバー内の空気を排除しながら、絶縁物４２の量を低減することができ、製品全体の軽量化を図ることができる。 (Embodiment 6)
In the present embodiment, as shown in FIG. 17, separation walls 36 a and 36 b that separate the high voltage region H and regions other than the high voltage region H are provided on the upper and lower surfaces of the substrate 36 so as to project the high voltage. The insulating material 42 filled in the region H is blocked by the separation walls 36 a and 36 b, and is not filled outside the high voltage region H. That is, a region sealed with the insulator H (region where corona discharge is likely to occur around the high voltage region H) and a region not sealed with the insulator H (corona discharge hardly occurs and air is present. Are separated from each other by separation walls 36a and 36b. As a result, as in the fifth embodiment, the amount of the insulator 42 can be reduced while eliminating the air in the resin cover that causes corona discharge, and the overall weight of the product can be reduced.

なお、電子部品Ｚ１〜Ｚ３は、コンデンサＣ１，Ｃ２、放電ギャップＳＧ等の始動回路を構成する部品である。 The electronic components Z1 to Z3 are components constituting a starting circuit such as capacitors C1 and C2 and a discharge gap SG.

（実施形態７）
本実施形態では、図１８に示すように、基板３６上方のソケット部２０下面に突設した分離壁２０ｂ、基板３６の下面に突設した分離壁３６ｂ、基板３６の上面に実装している電子部品Ｚ１によって、高電圧領域Ｈに充填される絶縁材４２は阻止されて、高電圧領域４２以外へ絶縁材４２は充填されない。すなわち、絶縁物４２で封止される領域（高電圧領域Ｈの周辺でコロナ放電が発生しやすい領域）と絶縁物４２で封止されない領域（コロナ放電が発生しにくく、空気が存在していても使用上問題とならない領域）とを分離壁３６ｂ、電子部品Ｚ１、分離壁２０ｂによって仕切っているのである。その結果、実施形態５と同様に、コロナ放電の原因となる樹脂カバー内の空気を排除しながら、絶縁物４２の量を低減することができ、製品全体の軽量化を図ることができる。 (Embodiment 7)
In this embodiment, as shown in FIG. 18, the separation wall 20 b protruding from the lower surface of the socket portion 20 above the substrate 36, the separation wall 36 b protruding from the lower surface of the substrate 36, and the electrons mounted on the upper surface of the substrate 36. The insulating material 42 filled in the high voltage region H is blocked by the component Z1, and the insulating material 42 is not filled outside the high voltage region 42. That is, a region sealed with the insulator 42 (region where corona discharge is likely to occur around the high voltage region H) and a region not sealed with the insulator 42 (corona discharge is unlikely to occur and air is present. Are separated from each other by the separation wall 36b, the electronic component Z1, and the separation wall 20b. As a result, as in the fifth embodiment, the amount of the insulator 42 can be reduced while eliminating the air in the resin cover that causes corona discharge, and the overall weight of the product can be reduced.

また、電子部品Ｚ１を用いずに、分離壁２０ｂ，３６ｂのみを用いても、絶縁物４２で封止される領域と封止されない領域とを分離することが可能である。 Further, even if only the separation walls 20b and 36b are used without using the electronic component Z1, the region sealed with the insulator 42 and the region not sealed can be separated.

（実施形態８）
図１９に示すように、上面シールドカバー５は、下面に開口を有し、下部が上部より外側に張り出すように段部５ａを形成されており、下面シールドカバー６は、上面に開口を有しており、組み合わせ時には上面シールドカバー５の下面開口に挿入される。そして、本実施形態では、上面樹脂カバー３の側面に凸部３ａを形成し、下面シールドカバー６の開口端６ｂと上面シールドカバー５の段部５ａとの間に凸部３ａが嵌合する状態で、上面シールドカバー５と下面シールドカバー６とが組み合わされる。したがって、上面シールドカバー５と下面シールドカバー６との間に形成される隙間に凸部３ａが位置しており、コロナ放電の原因となるシールドカバー内の空気を排除している。この凸部３ａは、上面樹脂カバー３に一体成形する場合もあり、あるいは下面樹脂カバー４に一体成形する場合もある。 (Embodiment 8)
As shown in FIG. 19, the upper shield cover 5 has an opening on the lower surface, and a step portion 5a is formed so that the lower portion projects outward from the upper portion, and the lower shield cover 6 has an opening on the upper surface. In the combination, it is inserted into the lower surface opening of the upper surface shield cover 5. And in this embodiment, the convex part 3a is formed in the side surface of the upper surface resin cover 3, and the convex part 3a fits between the opening end 6b of the lower surface shield cover 6, and the step part 5a of the upper surface shield cover 5. Thus, the upper shield cover 5 and the lower shield cover 6 are combined. Therefore, the convex portion 3a is located in the gap formed between the upper shield cover 5 and the lower shield cover 6 to eliminate air in the shield cover that causes corona discharge. The convex portion 3 a may be integrally formed with the upper surface resin cover 3 or may be integrally formed with the lower surface resin cover 4.

（実施形態９）
本実施形態では、図２０に示すように、実施形態８の上面樹脂カバー３と下面樹脂カバー４とを組み合わせた樹脂カバー内、下面シールドカバー６と樹脂カバーとの間に絶縁材４２を充填したものであって、絶縁物４２としては、実施形態４と同様に、ＢＭＣやエポキシ等の熱硬化性樹脂、あるいはウレタンやシリコンのポッティング材、あるいはホットメルトを使用する。したがって、実施形態４の効果に加えて、コロナ放電の原因となる下面シールドカバー６と樹脂カバーとの間の空気を排除でき、コロナ放電をさらに抑制できる。 (Embodiment 9)
In the present embodiment, as shown in FIG. 20, an insulating material 42 is filled in the resin cover in which the upper surface resin cover 3 and the lower surface resin cover 4 of the eighth embodiment are combined, and between the lower surface shield cover 6 and the resin cover. As the insulator 42, as in the fourth embodiment, a thermosetting resin such as BMC or epoxy, a potting material of urethane or silicon, or a hot melt is used. Therefore, in addition to the effects of the fourth embodiment, air between the lower shield cover 6 and the resin cover that causes corona discharge can be eliminated, and corona discharge can be further suppressed.

（実施形態１０）
上面シールドカバー５、下面シールドカバー６によるノイズシールド効果は、上面シールドカバー５と下面シールドカバー６との電気的接続状態によって大きく左右され、上面シールドカバー５−下面シールドカバー６間のインピーダンスが低いほど、ノイズシールド効果は高くなる。そこで、本実施形態では、図２１に示すように、上面シールドカバー５の開口端、下面シールドカバー６の開口端にカーリングを施したカーリング部５ａ，６ａを各々設けて、カーリング部５ａが下面シールドカバー６の外側面に当接し、カーリング部６ａが上面シールドカバー５の内側面に当接することで、上面シールドカバー５と下面シールドカバー６との電気的接続状態を良好なものとして、相互間のインピーダンスを低下させている。 (Embodiment 10)
The noise shielding effect by the upper shield cover 5 and the lower shield cover 6 depends greatly on the electrical connection state between the upper shield cover 5 and the lower shield cover 6, and the lower the impedance between the upper shield cover 5 and the lower shield cover 6, the lower the impedance. The noise shielding effect will be high. Therefore, in the present embodiment, as shown in FIG. 21, curling portions 5a and 6a each provided with curling are provided on the opening end of the upper shield cover 5 and the opening end of the lower shield cover 6, respectively. By contacting the outer surface of the cover 6 and the curling portion 6a contacting the inner surface of the upper shield cover 5, the electrical connection between the upper shield cover 5 and the lower shield cover 6 is improved, Impedance is lowered.

なお、上記カーリング部は、上面シールドカバー５と下面シールドカバー６とのいずれか一方のみに設けてもよい。 The curling portion may be provided only on one of the upper shield cover 5 and the lower shield cover 6.

（実施形態１１）
本実施形態では、実施形態１乃至１０において、上面シールドカバー５と下面シールドカバー６とのいずれか一方を磁性体で構成したものである。鉄系材料やアルミ系材料でシールドカバーを構成すると、第１の巻線８と第２の巻線９との間の磁気特性に影響を与え、第１の巻線８に発生するパルス電圧が低下する傾向があるが、磁性体でシールドカバーを構成すると、第１の巻線８と第２の巻線９との間の磁気特性が適切な特性となり、第１の巻線８に発生するパルス電圧を高電圧化することができる。 (Embodiment 11)
In this embodiment, in Embodiments 1 to 10, one of the upper shield cover 5 and the lower shield cover 6 is made of a magnetic material. If the shield cover is made of an iron-based material or an aluminum-based material, the magnetic characteristics between the first winding 8 and the second winding 9 are affected, and the pulse voltage generated in the first winding 8 is reduced. However, if the shield cover is made of a magnetic material, the magnetic characteristic between the first winding 8 and the second winding 9 becomes an appropriate characteristic and is generated in the first winding 8. The pulse voltage can be increased.

実施形態１の放電灯始動装置の構成を示し、（ａ）は上面図、（ｂ）は側面断面図である。The structure of the discharge lamp starting device of Embodiment 1 is shown, (a) is a top view, (b) is a side sectional view. 高圧ブロックの組立手順を説明する説明図である。It is explanatory drawing explaining the assembly procedure of a high voltage | pressure block. （ａ）は低圧回路ブロックの分解斜視図、（ｂ）は低圧回路ブロックの外観斜視図、（ｃ）は低圧回路ブロックと高圧ブロックの組立状態の外観斜視図である。(A) is an exploded perspective view of the low voltage circuit block, (b) is an external perspective view of the low voltage circuit block, and (c) is an external perspective view of the assembled state of the low voltage circuit block and the high voltage block. （ａ）は上面樹脂カバーおよび下面樹脂カバーの結合前の状態を示す分解斜視図、（ｂ）は上面樹脂カバーおよび下面樹脂カバーを結合した状態の外観斜視図である。(A) is an exploded perspective view showing a state before the upper surface resin cover and the lower surface resin cover are combined, and (b) is an external perspective view of the state in which the upper surface resin cover and the lower surface resin cover are combined. （ａ）はシールドカバーの取付前の状態を示す分解斜視図、（ｂ）はシールドカバーを取り付けた状態の外観斜視図である。(A) is a disassembled perspective view which shows the state before attachment of a shield cover, (b) is an external appearance perspective view of the state which attached the shield cover. パルストランス内部の概略構成を示し、（ａ）は上面図、（ｂ）は側面断面図である。The schematic structure inside a pulse transformer is shown, (a) is a top view, and (b) is a side sectional view. 本体部の概略構成を示し、（ａ）は上面図、（ｂ）は側面断面図である。The schematic structure of a main-body part is shown, (a) is a top view, (b) is side surface sectional drawing. 低圧回路ブロックと高圧ブロックの組立状態を示し、（ａ）は上面図、（ｂ）は側面断面図である。The assembled state of a low voltage circuit block and a high voltage block is shown, (a) is a top view and (b) is a side sectional view. 上面樹脂カバーおよび下面樹脂カバーを結合した状態を示し、（ａ）は上面図、（ｂ）は側面断面図である。The state which couple | bonded the upper surface resin cover and the lower surface resin cover is shown, (a) is a top view, (b) is side surface sectional drawing. 同上を用いた放電灯点灯装置のブロック図である。It is a block diagram of the discharge lamp lighting device using the same. 同上を用いた車両用前照灯器具の断面図である。It is sectional drawing of the vehicle headlamp fixture using the same as the above. 同上を用いた車両の一部省略せる外観斜視図である。It is an external appearance perspective view which can omit a part of vehicle using the same as the above. 実施形態２の高圧ブロックの概略構成を示す上面図である。It is a top view which shows schematic structure of the high voltage | pressure block of Embodiment 2. FIG. 実施形態３の高圧ブロックの概略構成を示す上面図である。It is a top view which shows schematic structure of the high voltage | pressure block of Embodiment 3. 実施形態４の構成を示し、（ａ）は上面図、（ｂ）は側面断面図である。The structure of Embodiment 4 is shown, (a) is a top view, (b) is side sectional drawing. 実施形態５の構成を示し、（ａ）は上面図、（ｂ）は側面断面図である。The structure of Embodiment 5 is shown, (a) is a top view, (b) is side sectional drawing. 実施形態６の構成の要部を示す側面断面図である。FIG. 10 is a side cross-sectional view showing the main part of the configuration of Embodiment 6. 実施形態７の構成の要部を示す側面断面図である。FIG. 10 is a side sectional view showing a main part of the configuration of the seventh embodiment. 実施形態８の構成の要部を示す側面断面図である。FIG. 10 is a side cross-sectional view showing the main part of the configuration of Embodiment 8. 実施形態９の構成の要部を示す側面断面図である。10 is a side cross-sectional view showing a main part of the configuration of Embodiment 9. FIG. 実施形態１０の構成の要部を示す側面断面図である。FIG. 10 is a side cross-sectional view showing a main part of the configuration of Embodiment 10. 従来の高圧ブロックの概略構成を示し、（ａ）は上面図、（ｂ）は側面断面図である。The schematic structure of the conventional high voltage | pressure block is shown, (a) is a top view, (b) is side sectional drawing. 従来の放電灯始動装置を用いる放電灯点灯装置のブロック回路図である。It is a block circuit diagram of a discharge lamp lighting device using a conventional discharge lamp starting device. 同上に放電灯を装着する前の状態を示す分解斜視図である。It is a disassembled perspective view which shows the state before mounting | wearing a discharge lamp on the same as the above. 同上を示し、（ａ）はパルストランスの外観斜視図、（ｂ）はトランスブロックの外観斜視図、（ｃ）は高圧パルス発生部の外観斜視図である。FIG. 2A is an external perspective view of a pulse transformer, FIG. 2B is an external perspective view of a transformer block, and FIG. 3C is an external perspective view of a high-voltage pulse generator.

Explanation of symbols

７フェライトコア
８第１の巻線
８ｂ端部
９第２の巻線
１２端子片
１９封止部
２０ソケット部
２１本体部
２４内側電極
２５外側電極
Ｈ高電圧領域 7 Ferrite core 8 First winding 8b End portion 9 Second winding 12 Terminal piece 19 Sealing portion 20 Socket portion 21 Body portion 24 Inner electrode 25 Outer electrode H High voltage region

Claims

A cylindrical socket port to which a cylindrical base of a discharge lamp is mounted; an inner electrode for electrical connection with a central electrode provided on the bottom surface of the base is disposed at the bottom of the socket port; A socket part made of a synthetic resin molded product in which an outer electrode for electrical connection with an outer peripheral electrode provided on the peripheral surface of the base is disposed on the outer periphery of the socket opening, and the first winding is wound, A magnetic core disposed in the vicinity of the outer periphery of the socket opening within a plane substantially perpendicular to the mounting direction of the discharge lamp, and a conductive portion electrically connecting one end of the first winding and the inner electrode A sealing portion that is integrally molded with the socket portion with a synthetic resin and seals the magnetic core, the first winding, and the conductive portion with resin, and the first winding is sealed in the sealing portion. It is wound on the outer surface of the part to be stopped and the discharge together with the first winding And a second winding that constitutes a pulse transformer that applies a starting pulse to the outer periphery of the socket opening, and the outer electrode and the conductive portion are disposed on the same diameter on the outer periphery of the socket opening across the center of the socket opening. A discharge lamp starting device.

The socket portion includes a cylindrical first cylindrical body and a cylindrical second cylindrical body formed in the first cylindrical body, and the outer electrode is disposed on an outer periphery of the first cylindrical body. The center of the 1st cylinder and the center of the 2nd cylinder are mutually shifted from each other, and the inside electrode is arranged in the 2nd cylinder. Discharge lamp starter.

The socket portion includes a cylindrical first cylindrical body and a cylindrical second cylindrical body formed in the first cylindrical body, and the outer electrode is disposed on an outer periphery of the first cylindrical body. The inner electrode is disposed in the second cylinder, and a protrusion is provided on the inner surface of the first cylinder facing the outer electrode across the center of the first cylinder. The discharge lamp starting device according to claim 1.

A starting circuit for generating a starting pulse in the first winding by energizing the second winding is provided in the vicinity of the bottom surface of the socket portion, and at least a part of the starting circuit, and the second winding 4. The discharge lamp starting device according to claim 1, wherein at least a part of the lamp is sealed with an insulator.

The discharge lamp starting device according to any one of claims 1 to 3, wherein a periphery of one end of the first winding, the inner electrode, and the conductive portion is sealed with an insulator.

6. The discharge lamp starting device according to claim 4, further comprising means for separating a region sealed with the insulator and a region not sealed.

A conductive first cover and a second cover that cover the apparatus by being combined with each other are provided, and at least part of a gap between the first and second covers and the apparatus is filled with resin. The discharge lamp starting device according to any one of claims 1 to 6.

8. The discharge lamp starting device according to claim 7, wherein at least one of the first cover and the second cover is curled at an end so as to abut against the other in a combined state.

The discharge lamp starting device according to claim 7 or 8, wherein at least one of the first cover and the second cover is made of a magnetic material.

A discharge lamp lighting device using the discharge lamp starting device according to any one of claims 1 to 9.

A vehicle headlamp apparatus using the discharge lamp lighting device according to claim 10.

A vehicle using the vehicle headlamp apparatus according to claim 11.