JP2009043671A - On-vehicle discharge lamp lighting device, on-vehicle headlight unit, and vehicle - Google Patents

On-vehicle discharge lamp lighting device, on-vehicle headlight unit, and vehicle Download PDF

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JP2009043671A
JP2009043671A JP2007210061A JP2007210061A JP2009043671A JP 2009043671 A JP2009043671 A JP 2009043671A JP 2007210061 A JP2007210061 A JP 2007210061A JP 2007210061 A JP2007210061 A JP 2007210061A JP 2009043671 A JP2009043671 A JP 2009043671A
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case
vehicle
discharge lamp
coupler
lighting device
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JP4966131B2 (en
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健一 ▲高▼松
Kenichi Takamatsu
Kousaku Arita
公策 有田
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Panasonic Electric Works Co Ltd
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Panasonic Electric Works Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle discharge lamp lighting device improved in airtightness and waterproofness of a case for housing a lighting circuit section for a discharge lamp, and also to provide an on-vehicle headlight unit, and a vehicle. <P>SOLUTION: In the on-vehicle discharge lamp lighting device 1, an opening section 50a is formed on one wall section of the case 5 where the lighting circuit section for generating electric power for lighting a discharge lamp from the power obtained from an input coupler 2 is housed. The input coupler 2 comprises: a coupler body 20 installed on one wall section while the opening section 40a is blocked; and a projection section 22 projecting in a location of the coupler body 20 facing the opening section 50a and inserted into the opening section 50a so as to generate a gap between the input coupler 2 and the whole inner peripheral surface of the opening section 50a. A packing 6 interposed between the input coupler 2 and the case 5 comprises: a cylinder section 60 for blocking the gap between an inner peripheral surface of the opening section 50a fitting on the projection section 22 and the projection section 22; and a flange section 61 integrally arranged on an end of the cylinder section 60 on a coupler body 20 side and interposed between the coupler body 20 and one wall section. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、車載用放電灯点灯装置、車載用前照灯装置、および車両に関するものである。   The present invention relates to an in-vehicle discharge lamp lighting device, an in-vehicle headlamp device, and a vehicle.

従来から、自動車の車両２００（図４参照）に搭載され、車両の前照灯などに用いられる高輝度放電灯（ＨＩＤランプともいう）などの放電灯Ｌ（図３参照）を点灯させる車載用放電灯点灯装置が提案されている（例えば、特許文献１参照）。以下、図９〜図１３を参照してこのような車載用放電灯点灯装置１について説明する。   Conventionally, a vehicle mounted on a vehicle 200 (see FIG. 4) for lighting a discharge lamp L (see FIG. 3) such as a high-intensity discharge lamp (also referred to as an HID lamp) used for a vehicle headlamp or the like. A discharge lamp lighting device has been proposed (see, for example, Patent Document 1). Hereinafter, such an in-vehicle discharge lamp lighting device 1 will be described with reference to FIGS. 9 to 13.

車載用放電灯点灯装置１は、車両２００に設置された灯体１００（図３参照）に取り付けられるケース５を備えている。このケース５の一壁部には、車載の図示しない直流電源であるバッテリ（一般的には１２Ｖのバッテリ）との接続に用いられる入力カプラ（入力用カプラ）２が設けられ、上記一壁部とは別の壁部（図９における上壁部）には、放電灯Ｌとの接続に用いられる出力カプラ（出力用カプラ）３が設けられている。そして、このケース５には、図１０に示すように、入力カプラ２を経由して上記バッテリより得た電力を元にして放電灯点灯用の電力を生成し、出力カプラ３を経由して放電灯Ｌに供給する点灯回路部４が収納されている。   The in-vehicle discharge lamp lighting device 1 includes a case 5 that is attached to a lamp body 100 (see FIG. 3) installed in a vehicle 200. One wall portion of the case 5 is provided with an input coupler (input coupler) 2 used for connection to a battery (generally a 12V battery) which is a DC power source (not shown) mounted on the vehicle. An output coupler (output coupler) 3 used for connection to the discharge lamp L is provided on a wall portion (upper wall portion in FIG. 9) different from the above. In this case 5, as shown in FIG. 10, electric power for lighting the discharge lamp is generated based on the electric power obtained from the battery via the input coupler 2, and is discharged via the output coupler 3. The lighting circuit unit 4 to be supplied to the lamp L is accommodated.

ここで、ケース５は、図１０に示すように、厚み方向の一面側（図１０における上面側）が開口した低背な箱状に形成されたケースボディ５０と、ケースボディ５０の一面開口を閉塞する形でケースボディ５０に取り付けられる平板状のケースカバー５１とで構成されている。なお、ケースボディ５０およびケースカバー５１はいずれも金属製のものである。   Here, as shown in FIG. 10, the case 5 has a case body 50 formed in a low-profile box shape with one surface side in the thickness direction (upper surface side in FIG. 10) opened, and one surface opening of the case body 50. A flat case cover 51 is attached to the case body 50 so as to be closed. The case body 50 and the case cover 51 are both made of metal.

ケース５の上記一壁部にあたるケースボディ５０の一側壁部には、ケースボディ５０の内外（すなわちケース５の内外）を連通する形の矩形状の開孔部５０ａが形成されている。ケースボディ５０の上記一側壁部における開孔部５０ａの長手方向両側それぞれには、入力カプラ２の取り付けに用いられる取付ねじＳ１用のねじ穴５０ｂが形成されている。さらに、ケースボディ５０の上記一側壁部における長手方向両側それぞれには突片５０ｃが一体に突設され、各突片５０ｃにはねじ挿通孔５０ｄが厚み方向に貫設されており、このねじ挿通孔５０ｄには、ケースボディ５０とケースカバー５１とを結合するための結合ねじＳ２がワッシャＷ２を通して挿通される。また、図１０では図示していないが、上記突片５０ｃと同様の突片５０ｃは、ケースボディ５０の上記一側壁部とは反対側の他側壁部にも１つ設けられている。また、ケースボディ５０の内底面には、点灯回路部４を固定するための固定ねじＳ３用のねじ穴５０ｅを備えたボス５０ｆが突設されている。   In one side wall portion of the case body 50 corresponding to the one wall portion of the case 5, a rectangular opening 50 a that communicates the inside and outside of the case body 50 (that is, the inside and outside of the case 5) is formed. Screw holes 50b for mounting screws S1 used for mounting the input coupler 2 are formed on both sides in the longitudinal direction of the opening 50a in the one side wall portion of the case body 50. Further, projecting pieces 50c are integrally projected on both sides in the longitudinal direction of the one side wall portion of the case body 50, and screw insertion holes 50d are formed through the projecting pieces 50c in the thickness direction. A coupling screw S2 for coupling the case body 50 and the case cover 51 is inserted through the washer W2 into the hole 50d. Although not shown in FIG. 10, one protruding piece 50 c similar to the protruding piece 50 c is also provided on the other side wall portion of the case body 50 opposite to the one side wall portion. Further, a boss 50f provided with a screw hole 50e for the fixing screw S3 for fixing the lighting circuit portion 4 is projected from the inner bottom surface of the case body 50.

ケースカバー５１におけるケースボディ５０側とは反対側（図９における上面側）には、円筒状の取付用筒部５１ａが突設されている。ケースカバー５１における取付用筒部５１ａで囲まれた部位には、出力カプラ３を外方に突出させる窓孔５１ｂがケースカバー５１を厚み方向に貫通する形に形成され、上記部位における窓孔５１ｂの近傍には、出力カプラ３に接続された電線Ｈ２（図３参照）を保持するＬ字状の保持片５１ｃがケースカバー５１の一部を切り起こすことによって２つ形成されている。また、ケースカバー５１におけるケースボディ５０との対向面側には、ケースボディ５０のねじ挿通孔５０ｄを挿通した結合ねじＳ２用のねじ穴（図示せず）が形成されている。また、ケースカバー５１の側部には、ケース５を灯体１００に取り付けるための取付片５１ｄが突設されており、各取付片５１ｄには、ねじ挿通孔５１ｅが設けられている。したがって、ケース５は、ねじ止めによって灯体１００に取り付けることができるようになっている。   On the opposite side (upper surface side in FIG. 9) of the case cover 51 to the case body 50 side, a cylindrical mounting cylinder portion 51a is projected. A window hole 51b for projecting the output coupler 3 outward is formed in a portion of the case cover 51 surrounded by the mounting cylinder portion 51a so as to penetrate the case cover 51 in the thickness direction. Two L-shaped holding pieces 51c for holding the electric wire H2 (see FIG. 3) connected to the output coupler 3 are formed by cutting up a part of the case cover 51. Further, a screw hole (not shown) for the coupling screw S2 that is inserted through the screw insertion hole 50d of the case body 50 is formed on the surface of the case cover 51 that faces the case body 50. Further, on the side of the case cover 51, mounting pieces 51d for mounting the case 5 to the lamp body 100 are projected, and each mounting piece 51d is provided with a screw insertion hole 51e. Therefore, the case 5 can be attached to the lamp body 100 by screwing.

入力カプラ２は、車載のバッテリと点灯回路部４との電気的接続に利用されるコネクタからなり、開孔部５０ａを閉塞する形でケース５の上記一壁部の外面側に取り付けられるカプラ本体２０を有している。このカプラ本体２０には、図１１に示すように、一端が車載のバッテリとの接続用の電線Ｈ１（図３参照）に接続され、他端が点灯回路部４に接続される一対の接続端子２１がその長さ方向をカプラ本体２０の軸方向に沿わせた形で収納されている。また、カプラ本体２０においてケース５と対向する側の端部には、入力カプラ２をケース５に取り付ける際に用いられる鍔部２０ａが設けられており、この鍔部２０ａには、取付ねじＳ１がワッシャＷ１を通して挿通されるねじ挿通孔２０ｂが形成されている。   The input coupler 2 is a connector that is used for electrical connection between the on-vehicle battery and the lighting circuit portion 4, and is a coupler main body that is attached to the outer surface side of the one wall portion of the case 5 so as to close the opening portion 50 a. 20. As shown in FIG. 11, the coupler body 20 has a pair of connection terminals, one end of which is connected to the electric wire H <b> 1 (see FIG. 3) for connection with the on-vehicle battery and the other end is connected to the lighting circuit unit 4. 21 is accommodated in such a manner that its length direction is along the axial direction of the coupler body 20. Further, a flange portion 20a used when attaching the input coupler 2 to the case 5 is provided at an end portion of the coupler body 20 facing the case 5, and the attachment screw S1 is provided on the flange portion 20a. A screw insertion hole 20b that is inserted through the washer W1 is formed.

出力カプラ３は、放電灯Ｌと点灯回路部４との電気的接続に利用されるコネクタからなり、筒状のカプラ本体３０を有し、カプラ本体３０には、一端が放電灯Ｌとの接続用の電線Ｈ２に接続され、他端が点灯回路部４に接続される一対の接続端子（図示せず）が収納されている。   The output coupler 3 includes a connector used for electrical connection between the discharge lamp L and the lighting circuit unit 4, and includes a cylindrical coupler body 30, one end of which is connected to the discharge lamp L at the coupler body 30. A pair of connection terminals (not shown) that are connected to the electric wire H2 and whose other end is connected to the lighting circuit unit 4 are housed.

点灯回路部４は、上述したように、入力カプラ２を経由して上記バッテリより得た電力を元にして放電灯点灯用の電力を生成し出力カプラ３を経由して放電灯Ｌに供給するものであって、例えば、入力カプラ２より得た直流電圧を所定の直流電圧に変換するＤＣ／ＤＣコンバータ（図示せず）や、ＤＣ／ＤＣコンバータの出力を平滑化する平滑回路（図示せず）、平滑回路で平滑された直流電圧を元に放電灯Ｌ点灯用の交流電圧を生成するインバータ（図示せず）、ＤＣ／ＤＣコンバータおよびインバータの動作制御を行うＩＣチップなどの制御部（図示せず）などからなる点灯回路を構成する種々の回路部品４０と、回路部品４０が実装された実装基板４１とを備えている。実装基板４１には、固定ねじＳ３がワッシャＷ３を通して挿通されるねじ挿通孔４１ａが厚み方向に貫設され、この固定ねじＳ２によって、ケース５（ケースボディ５０）に電気的に接続されるようになっており、ケース５をフレームグラウンドとしている。また、実装基板４１には、入力カプラ２の一対の接続端子２１それぞれの他端部が挿通される一対のスルーホール４１ｂが貫設されている。   As described above, the lighting circuit unit 4 generates power for lighting the discharge lamp based on the power obtained from the battery via the input coupler 2 and supplies the power to the discharge lamp L via the output coupler 3. For example, a DC / DC converter (not shown) that converts a DC voltage obtained from the input coupler 2 into a predetermined DC voltage, or a smoothing circuit (not shown) that smoothes the output of the DC / DC converter. ), An inverter (not shown) that generates an AC voltage for lighting the discharge lamp L based on the DC voltage smoothed by the smoothing circuit, a DC / DC converter, and a control unit such as an IC chip that controls the operation of the inverter (see FIG. (Not shown) and the like, and a mounting substrate 41 on which the circuit component 40 is mounted. A screw insertion hole 41a through which the fixing screw S3 is inserted through the washer W3 is provided in the mounting substrate 41 in the thickness direction. The fixing screw S2 is electrically connected to the case 5 (case body 50). The case 5 is a frame ground. The mounting substrate 41 is provided with a pair of through holes 41b through which the other end portions of the pair of connection terminals 21 of the input coupler 2 are inserted.

上述した車載用放電灯点灯装置１において、入力カプラ２は、ケース５に対しカプラ本体２０で開孔部５０ａを閉塞する形に配置され、カプラ本体２０のねじ挿通孔２０ｂを挿通した取付ねじＳ１をケースボディ５０のねじ孔５０ｂに螺着することによって取り付けられている。また、点灯回路部４は、実装基板４１のねじ挿通孔４１ａを挿通した固定ねじＳ３をケースボディ５０のねじ穴５０ｅに螺着することによってケースボディ５０に固定されるとともに、ケースボディ５０内において、スルーホール４１ｂを利用して入力カプラ２の一対の端子部２１それぞれと半田付けなどにより接続される。これによって、入力カプラ２を経由して点灯回路部４に車載のバッテリの電力が供給可能となっている。また、出力カプラ３は、上述したように点灯回路部４の実装基板４１に実装され、これによって、出力カプラ３を経由して放電灯Ｌに放電灯点灯用の電力を供給可能となっている。   In the above-described in-vehicle discharge lamp lighting device 1, the input coupler 2 is arranged so as to close the opening 50 a with the coupler body 20 with respect to the case 5, and the mounting screw S <b> 1 inserted through the screw insertion hole 20 b of the coupler body 20. Is attached to the screw hole 50b of the case body 50 by screwing. The lighting circuit unit 4 is fixed to the case body 50 by screwing a fixing screw S3 inserted through the screw insertion hole 41a of the mounting substrate 41 into the screw hole 50e of the case body 50, and in the case body 50, The through-hole 41b is used to connect to each of the pair of terminal portions 21 of the input coupler 2 by soldering or the like. As a result, the on-board battery power can be supplied to the lighting circuit unit 4 via the input coupler 2. Further, as described above, the output coupler 3 is mounted on the mounting substrate 41 of the lighting circuit unit 4, and thereby, the discharge lamp lighting power can be supplied to the discharge lamp L via the output coupler 3. .

そして、このように入力カプラ２が上記一側壁部に取り付けられ、点灯回路部４が収納されたケースボディ５０には、出力カプラ３を窓孔５１ｂより外部に露出させる形でケースカバー５１が被着され、ケースボディ５０のねじ挿通孔５０ｄを挿通した結合ねじＳ２をケースカバー５１のねじ穴に螺着することで、ケースボディ５０とケースカバー５１とが結合され、図９に示す車載用放電灯点灯装置１が得られる。なお、図９では取付ねじＳ１およびねじ挿通孔２０ｃは図示を省略している。   Then, the case cover 51 is covered with the case body 50 in which the input coupler 2 is attached to the one side wall portion and the lighting circuit portion 4 is housed in this manner so that the output coupler 3 is exposed to the outside through the window hole 51b. The case body 50 and the case cover 51 are coupled to each other by screwing the connecting screw S2 inserted through the screw insertion hole 50d of the case body 50 into the screw hole of the case cover 51. An electric lamp lighting device 1 is obtained. In FIG. 9, the mounting screw S1 and the screw insertion hole 20c are not shown.

このようにケース５には、点灯回路部４が収納され、且つ入力カプラ２が一壁部（図９における左下側の壁部）に設けられるとともに、出力カプラ３が上記一壁部とは別の壁部（図９に示す例では上壁部）に設けられ、ケース５は、車両に設置された灯体１００内に出力カプラ３を臨ませる形で灯体２００に取り付けられる。   As described above, the lighting circuit portion 4 is accommodated in the case 5, the input coupler 2 is provided on one wall portion (the lower left wall portion in FIG. 9), and the output coupler 3 is different from the one wall portion. The case 5 is attached to the lamp body 200 in such a manner that the output coupler 3 faces the lamp body 100 installed in the vehicle.

ここで、車載用放電灯点灯装置１は、車両２００の前照灯用の点灯装置としてされることが多く、前照灯用の灯体１００は車両２００のエンジンルーム内に設置されているため、車載用放電灯点灯装置１は、被水環境下で使用される。   Here, the in-vehicle discharge lamp lighting device 1 is often used as a lighting device for a headlamp of the vehicle 200, and the lamp body 100 for the headlamp is installed in the engine room of the vehicle 200. The in-vehicle discharge lamp lighting device 1 is used in a wet environment.

したがって、車載用放電灯点灯装置１のケース５には、ケース５内部の点灯回路部４を水などから保護する機能、すなわち、気密性や、防水性が要求されている。   Therefore, the case 5 of the in-vehicle discharge lamp lighting device 1 is required to have a function of protecting the lighting circuit portion 4 inside the case 5 from water, that is, airtightness and waterproofness.

そのため、このような車載用放電灯点灯装置１では、図１０に示すように、ケースボディ５０とケースカバー５１との間に、ケース用パッキン５２が介在されている。このケース用パッキン５２は、弾性体（例えば、エラストマなど）により形成されており、ケースボディ５０とケースカバー５１との隙間を閉塞することによって、ケース５の気密性、防水性の向上を図っている。   Therefore, in such an in-vehicle discharge lamp lighting device 1, a case packing 52 is interposed between the case body 50 and the case cover 51 as shown in FIG. 10. The case packing 52 is formed of an elastic body (e.g., an elastomer) and closes the gap between the case body 50 and the case cover 51 to improve the airtightness and waterproofness of the case 5. Yes.

また、図９に示す車載用放電灯点灯装置１では、ケース５に入力カプラ２を取り付けているので、入力カプラ２とケース５との隙間より水などが浸入するおそれがあるから、図１２（ａ），（ｂ）に示すようなパッキン６を用いて、ケース５の気密性、防水性の向上を図っている。このパッキン６は、ケース用パッキン５２同様、エラストマなどの弾性体により略矩形の細枠状に形成されており、図１３に示すように、ケース５の開孔部５０ａの周縁部（図１３（ａ）中においてＰで示す部分）に配置され、入力カプラ２のカプラ本体２０とケース５の一壁部との間に介在されている。
特許第３９０３７４５号公報 Further, in the in-vehicle discharge lamp lighting device 1 shown in FIG. 9, since the input coupler 2 is attached to the case 5, water or the like may enter through the gap between the input coupler 2 and the case 5. The packing 6 as shown in a) and (b) is used to improve the airtightness and waterproofness of the case 5. Like the case packing 52, the packing 6 is formed in a substantially rectangular thin frame shape by an elastic body such as an elastomer. As shown in FIG. 13, the peripheral portion of the opening portion 50a of the case 5 (FIG. 13 ( a) and is interposed between the coupler body 20 of the input coupler 2 and one wall portion of the case 5.
Japanese Patent No. 3903745

上記のパッキン６は、車両２００の静止時には有効であったが、運転時（運動時）には車両２００に様々な環境負荷、例えば、温度、熱、機械的な引っ張り、こじりなどが生じ、このような環境負荷が車載用放電灯点灯装置１にかかった際には、パッキン６とケース５との間に隙間ができて、この隙間から水などが浸入してしまうおそれがあった。従来、このような場合には、グリス（グリース）などの漏れ止め防止剤を塗布することによって対処していた。しかしながら、グリスを塗布した場合であっても、機械的な引っ張りなどが強い場合には、気密性や防水性が悪化してしまうことがエアリーク試験によって確認された。   The packing 6 was effective when the vehicle 200 was stationary, but various environmental loads such as temperature, heat, mechanical pulling, and squeezing occurred during driving (exercising). When such an environmental load is applied to the in-vehicle discharge lamp lighting device 1, a gap is formed between the packing 6 and the case 5, and water or the like may enter through this gap. Conventionally, such a case has been dealt with by applying an anti-leakage agent such as grease. However, even when grease was applied, it was confirmed by an air leak test that airtightness and waterproofness would deteriorate if mechanical pulling or the like was strong.

本発明は上述の点に鑑みて為されたもので、その目的は、放電灯用の点灯回路部が収納されたケースの気密性や防水性を向上できる車載用放電灯点灯装置、車載用前照灯装置、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 points, and an object of the present invention is to provide an in-vehicle discharge lamp lighting device capable of improving the airtightness and waterproofness of a case in which a discharge lamp lighting circuit unit is housed. An object is to provide an illumination device and a vehicle.

上述の課題を解決するために、請求項１の発明では、車載の直流電源との接続に用いられる入力カプラと、放電灯との接続に用いられる出力カプラと、入力カプラを経由して直流電源より得た電力を元にして放電灯点灯用の電力を生成し出力カプラを経由して放電灯に供給する点灯回路部と、点灯回路部が収納され且つ入力カプラが一壁部に設けられるとともに出力カプラが上記一壁部とは別の壁部に設けられ、車両に設置された灯体内に出力カプラを臨ませる形で当該灯体に取り付けられたケースと、弾性体よりなり当該ケースと入力カプラとの間に介在されたパッキンとを備え、ケースの上記一壁部には、ケースの内外を連通する形の開孔部が形成され、入力カプラは、開孔部を閉塞する形でケースの上記一壁部の外面側に取り付けられるカプラ本体と、カプラ本体において開孔部に臨む部位に突設され開孔部の内周面全面との間に隙間が生じる形で開孔部内に入り込む突出部とを備え、パッキンは、入力カプラの突出部に被嵌され開孔部の内周面と突出部との隙間を閉塞する筒体部と、筒体部におけるカプラ本体側の端部に一体に設けられカプラ本体とケースの上記一壁部との間に介在されたフランジ部とを備えていることを特徴とする。   In order to solve the above-mentioned problem, in the invention of claim 1, an input coupler used for connection to an in-vehicle DC power supply, an output coupler used for connection to a discharge lamp, and a DC power supply via the input coupler A lighting circuit unit that generates electric power for lighting a discharge lamp based on the obtained electric power and supplies the electric power to the discharge lamp via an output coupler, a lighting circuit unit is housed, and an input coupler is provided on one wall portion An output coupler is provided on a wall portion different from the one wall portion, and a case attached to the lamp body in such a manner that the output coupler faces the lamp body installed in the vehicle, and an elastic body and the case input. A gasket interposed between the coupler and the one wall portion of the case is formed with an opening portion that communicates the inside and outside of the case, and the input coupler closes the opening portion. Attached to the outer surface of the one wall The packing body is provided with a coupler body and a projecting portion that protrudes from a portion of the coupler body facing the opening portion and enters the opening portion so as to create a gap between the entire inner peripheral surface of the opening portion. A cylindrical body portion that is fitted on the protruding portion of the opening portion and closes the gap between the inner peripheral surface of the opening and the protruding portion, and the coupler body and the case are integrally provided at an end portion on the coupler main body side of the cylindrical body portion. And a flange portion interposed between the wall portion and the wall portion.

請求項１の発明によれば、パッキンが、入力カプラのカプラ本体とケースの一壁部との間に介在されるフランジ部と、入力カプラの突出部とケースの開孔部の内周面との隙間を閉塞する筒体部とを備えているので、単に入力カプラのカプラ本体とケースとの間にだけ介在される従来例のパッキンに比べれば、放電灯用の点灯回路部が収納されたケースの気密性および防水性を向上できる。また、入力カプラは、突出部と当該突出部に被嵌されたパッキンの筒体部がケースの開孔部内に挿入されることによって、ケースに対し仮保持されるから、入力カプラをケースに取り付けるにあたって、仮保持用の治具などが不要になる。   According to the invention of claim 1, the packing includes a flange portion interposed between the coupler main body of the input coupler and the one wall portion of the case, the protruding portion of the input coupler, and the inner peripheral surface of the opening portion of the case. And a cylindrical body portion that closes the gap between them, so that the lighting circuit portion for the discharge lamp is housed in comparison with the conventional packing simply interposed between the coupler main body and the case of the input coupler. The airtightness and waterproofness of the case can be improved. Further, the input coupler is temporarily held with respect to the case by inserting the protruding portion and the cylindrical portion of the packing fitted to the protruding portion into the opening portion of the case, so the input coupler is attached to the case. At this time, a temporary holding jig or the like becomes unnecessary.

請求項２の発明では、請求項１の発明において、ケースの上記一壁部の内面側における開孔部の縁部には、内周面が開孔部の内周面と連続する形で開孔部を囲繞する周壁部が突設され、入力カプラの突出部は、周壁部の内周面との間に隙間が生じる形で周壁部の内側に入り込むように延設され、パッキンの筒体部は、入力カプラの突出部と周壁部の内周面との隙間を閉塞する形に延設さ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 of the invention, the edge of the opening on the inner surface side of the one wall portion of the case is opened so that the inner peripheral surface is continuous with the inner peripheral surface of the opening. A peripheral wall portion surrounding the hole portion is projected, and the protruding portion of the input coupler extends so as to enter the inside of the peripheral wall portion with a gap formed between the inner peripheral surface of the peripheral wall portion and a cylindrical body of the packing The portion is characterized by extending so as to close a gap between the protruding portion of the input coupler and the inner peripheral surface of the peripheral wall portion.

請求項２の発明によれば、放電灯用の点灯回路部が収納されたケースの気密性および防水性をさらに向上できる。   According to invention of Claim 2, the airtightness and waterproofness of the case where the lighting circuit part for discharge lamps was accommodated can be improved further.

請求項３の発明では、請求項１または２の発明において、パッキンの筒体部の外周面には、ケースにおける筒体部の外周面との対向面と入力カプラの突出部の外周面との隙間を閉塞する複数の突起部が筒体部の軸方向において互いに離間する形に形成されていることを特徴とする。   According to a third aspect of the present invention, in the first or second aspect of the invention, the outer peripheral surface of the cylindrical portion of the packing includes a surface facing the outer peripheral surface of the cylindrical portion of the case and an outer peripheral surface of the protruding portion of the input coupler. A plurality of protrusions that close the gap are formed so as to be separated from each other in the axial direction of the cylindrical body.

請求項３の発明によれば、パッキンの筒体部の外周面全体がケースの対向面に当接する場合に比べれば、パッキンの筒体部におけるケースの対向面との接触面積が減少するので、筒体部とケースの対向面との接圧が向上するから、放電灯用の点灯回路部が収納されたケースの気密性および防水性をさらに向上できる。   According to the invention of claim 3, the contact area of the cylindrical body portion of the packing with the opposing surface of the case is reduced as compared with the case where the entire outer peripheral surface of the cylindrical body portion of the packing is in contact with the opposing surface of the case. Since the contact pressure between the cylindrical portion and the facing surface of the case is improved, the airtightness and waterproofness of the case in which the discharge lamp lighting circuit portion is housed can be further improved.

請求項４の発明では、請求項３の発明において、ケースの上記対向面には、突起部と凹凸嵌合する嵌合凹部が形成されていることを特徴とする。   The invention according to claim 4 is characterized in that, in the invention according to claim 3, a fitting recess is formed on the facing surface of the case to be engaged with the protrusion.

請求項４の発明によれば、パッキンの複数の突起部とケースの対向面に形成された嵌合凹部とを凹凸嵌合させることによって、入力カプラをケースに取り付けることができ、このときパッキンが入力カプラとケースとの寸法誤差を吸収するから、入力カプラがケースに対してがたついてしまうことを抑制でき、しかも、入力カプラをケースに取り付けるためのねじ止めなどが必要なくなって、部品点数および組立工数を削減でき、組立作業の容易化が図れる。   According to the invention of claim 4, the input coupler can be attached to the case by fitting the plurality of protrusions of the packing and the fitting recess formed on the facing surface of the case to the concave and convex portions. Absorbing dimensional errors between the input coupler and the case, it is possible to suppress the input coupler from rattling against the case, and it is no longer necessary to use screws to attach the input coupler to the case. Assembling man-hours can be reduced, and assembly work can be facilitated.

請求項５の発明では、請求項１〜４のうちいずれか１項の発明において、突出部におけるカプラ本体との反対側には、カプラ本体との間でケースおよびパッキンのフランジ部を挟み込む狭持部が設けられていることを特徴とする。   According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects of the present invention, the projecting portion is sandwiched between the coupler main body and the flange portion of the case and the packing on the opposite side of the coupler main body. A portion is provided.

請求項５の発明によれば、入力カプラおよびケースとフランジ部との接圧を高めることができるから、入力カプラがケースに対してがたついてしまうことをさらに抑制でき、その上、さらなる気密性、防水性の向上が図れる。   According to the invention of claim 5, since the contact pressure between the input coupler and the case and the flange portion can be increased, it is possible to further suppress the input coupler from rattling with respect to the case, and to achieve further airtightness. The waterproofness can be improved.

請求項６の発明では、請求項１〜５のうちいずれか１項記載の車載用放電灯点灯装置と、当該車載用放電灯点灯装置により点灯される前照灯用の放電灯が収納された灯体とを備えていることを特徴とする。   In the invention of claim 6, the in-vehicle discharge lamp lighting device according to any one of claims 1 to 5 and a discharge lamp for a headlamp that is turned on by the in-vehicle discharge lamp lighting device are housed. And a lamp body.

請求項６の発明によれば、放電灯用の点灯回路部が収納されたケースの気密性や防水性を向上できる。   According to invention of Claim 6, the airtightness and waterproofness of the case where the lighting circuit part for discharge lamps was accommodated can be improved.

請求項７の発明では、請求項６記載の車載用前照灯装置を車体に備えていることを特徴とする。   The invention according to claim 7 is characterized in that the vehicle-mounted headlamp device according to claim 6 is provided in a vehicle body.

請求項７の発明によれば、放電灯用の点灯回路部が収納されたケースの気密性や防水性を向上できる。   According to the invention of claim 7, the airtightness and waterproofness of the case in which the lighting circuit for the discharge lamp is accommodated can be improved.

本発明は、放電灯用の点灯回路部が収納されたケースの気密性および防水性を向上できるという効果を奏する。   The present invention has an effect that the airtightness and waterproofness of a case in which a lighting circuit portion for a discharge lamp is housed can be improved.

（実施形態１）
本実施形態の車載用放電灯点灯装置１は、上記従来例（図９，１０に示す車載用放電灯点灯装置１）と同様に、車載のバッテリとの接続に用いられる入力カプラ２と、放電灯Ｌとの接続に用いられる出力カプラ３と、入力カプラ２を経由してバッテリより得た電力を元にして放電灯点灯用の電力を生成し出力カプラ３を経由して放電灯Ｌに供給する点灯回路部４と、点灯回路部４が収納され且つ入力カプラ２が一壁部に設けられるとともに出力カプラ３が上記一壁部とは別の壁部に設けられ、車両２００に設置された灯体１００内に出力カプラ３を臨ませる形で当該灯体１００に取り付けられたケース５と、弾性体よりなり当該ケース５と入力カプラ２との間に介在されたパッキン６とを備えているが、入力カプラ２とパッキン６の構成は上記従来例（図９に示す車載用放電灯点灯装置１）と異なっている。尚、本実施形態におけるその他の構成（出力カプラ３、点灯回路部４、およびケース５）については上記従来例と同様であるから、同一の符号を付して詳細な説明は省略する。 (Embodiment 1)
The in-vehicle discharge lamp lighting device 1 of the present embodiment is similar to the above-described conventional example (the in-vehicle discharge lamp lighting device 1 shown in FIGS. 9 and 10), the input coupler 2 used for connection to the in-vehicle battery, and the release coupler. Based on the output coupler 3 used for connection with the electric lamp L and the electric power obtained from the battery via the input coupler 2, electric power for lighting the discharge lamp is generated and supplied to the discharge lamp L via the output coupler 3. The lighting circuit unit 4 to be mounted, the lighting circuit unit 4 is housed, the input coupler 2 is provided on one wall portion, and the output coupler 3 is provided on a wall portion different from the one wall portion, and is installed in the vehicle 200 A case 5 attached to the lamp body 100 so that the output coupler 3 faces the lamp body 100, and a packing 6 made of an elastic body and interposed between the case 5 and the input coupler 2 are provided. However, the configuration of the input coupler 2 and packing 6 is It is different from the conventional example (the vehicle discharge lamp lighting device 1 shown in FIG. 9). In addition, since it is the same as that of the said prior art example about the other structure (the output coupler 3, the lighting circuit part 4, and the case 5) in this embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

本実施形態における入力カプラ２は、図１（ａ）に示すように、ケース５の開孔部５０ａを閉塞する形でケース５の一壁部の外面側に取り付けられる筒状のカプラ本体２０と、一対の接続端子２１とを備えている点は上記従来例と同様であるが、このカプラ本体２０において開孔部５０ａに臨む部位に一対の接続端子２１を囲繞する筒状の突出部２２を一体に突設し、この突出部２２の外形サイズを開孔部５０ａの開口サイズよりも小さく（例えば一回り小さく）することで、入力カプラ２をケース５に取り付けた状態では、突出部２２と開孔部５０ａの内周面全面との間に隙間が生じるようにしている点で上記従来例と異なっている。   As shown in FIG. 1A, the input coupler 2 in the present embodiment includes a cylindrical coupler body 20 that is attached to the outer surface side of one wall portion of the case 5 so as to close the opening 50a of the case 5. In this coupler body 20, a cylindrical projecting portion 22 that surrounds the pair of connection terminals 21 is provided at a portion facing the opening 50 a in the point that the pair of connection terminals 21 are provided. When the input coupler 2 is attached to the case 5 by projecting integrally and making the outer size of the projecting portion 22 smaller (for example, one size smaller) than the opening size of the opening portion 50a, This is different from the conventional example in that a gap is generated between the entire inner peripheral surface of the opening 50a.

本実施形態におけるパッキン６は、従来例と同様に弾性体よりなるが、入力カプラ２の突出部２２に被嵌される筒体部６０と、筒体部６０におけるカプラ本体２０側の端部に一体に設けられたフランジ部６１とを備えている点で従来例と異なっている。   The packing 6 in the present embodiment is made of an elastic body as in the conventional example, but at the end of the cylindrical body portion 60 on the coupler body 20 side and the cylindrical body portion 60 that is fitted to the protruding portion 22 of the input coupler 2. This is different from the conventional example in that a flange portion 61 provided integrally is provided.

筒体部６０は突出部２２と凹凸嵌合する嵌合孔６０ａを備えており、その外形形状は開孔部５０ａと隙間なく凹凸嵌合する形に形成されている。また、筒体部６０の外周面は、筒体部６０の外周面全面が開孔部５０ａの内周面と当接するように平坦な面になっている。さらに、筒体部６０の内側の空間形状は突出部２２と凹凸嵌合する形状となっている。フランジ部６１の外形サイズは筒体部６０の外形サイズよりも大きくなっており、これによって、筒体部６０を開孔部５０ａに凹凸嵌合させた際に、フランジ部６１がケース５の上記一壁部の外面側における開孔部５０ａの周縁部に重なるようにしている。   The cylindrical body part 60 is provided with a fitting hole 60a for engaging with the protruding part 22 in a concave and convex manner, and the outer shape thereof is formed so as to fit with the opening part 50a without a gap. Moreover, the outer peripheral surface of the cylinder part 60 is a flat surface so that the whole outer peripheral surface of the cylinder part 60 may contact | abut with the inner peripheral surface of the opening part 50a. Furthermore, the space shape inside the cylindrical part 60 is a shape that is unevenly fitted to the protruding part 22. The outer size of the flange portion 61 is larger than the outer size of the cylindrical body portion 60, so that when the cylindrical body portion 60 is concavo-convexly fitted to the opening portion 50 a, the flange portion 61 becomes the above-described case 5. It is made to overlap with the peripheral part of the opening part 50a in the outer surface side of one wall part.

このように本実施形態におけるパッキン６は、入力カプラ２の突出部２２に被嵌され開孔部５０ａの内周面と突出部２２との隙間を閉塞する筒体部６０と、筒体部６０におけるカプラ本体２０側の端部に一体に設けられカプラ本体２０とケース５の上記一壁部との間に介在されたフランジ部６１とを備えている。   As described above, the packing 6 in the present embodiment includes the cylindrical body portion 60 that is fitted on the protruding portion 22 of the input coupler 2 and closes the gap between the inner peripheral surface of the opening portion 50a and the protruding portion 22, and the cylindrical body portion 60. And a flange portion 61 that is integrally provided at the end of the coupler main body 20 and is interposed between the coupler main body 20 and the one wall portion of the case 5.

そして、本実施形態における入力カプラ２およびパッキン６をケース５に取り付けるにあたっては、まず、入力カプラ２の突出部２２にパッキン６の筒体部６０を被嵌してから、突出部２２を開孔部５０ａに上記一側部の外面側より挿入した後に、カプラ本体２０のねじ挿通孔２０ｂを挿通した取付ねじＳ１をケースボディ５０のねじ孔５０ｂに螺着し、これによって、図１（ｂ）に示すように、入力カプラ２およびパッキン６がケース５に取り付けられる。   In attaching the input coupler 2 and the packing 6 to the case 5 in the present embodiment, first, the cylindrical portion 60 of the packing 6 is fitted on the protruding portion 22 of the input coupler 2, and then the protruding portion 22 is opened. After being inserted into the portion 50a from the outer surface side of the one side portion, the mounting screw S1 inserted through the screw insertion hole 20b of the coupler main body 20 is screwed into the screw hole 50b of the case body 50, whereby FIG. The input coupler 2 and the packing 6 are attached to the case 5 as shown in FIG.

以上述べた本実施形態の車載用放電灯点灯装置１では、パッキン６は入力カプラ２のカプラ本体２０とケース５の上記一壁部との間に介在されるフランジ部６１と、入力カプラ２の突出部２２とケース５の開孔部５０ａの内周面との隙間を閉塞する筒体部６０とを備えている。ここで、フランジ部６１は、ケース５の上記一壁部の厚み方向に沿った方向においてケース５と当接しているのに対し、筒体部６０は、ケース５の上記一壁部の厚み方向に交差する方向に沿った方向においてケース５と当接しているので、パッキン６とケース５との間に隙間が生じるためには、フランジ部６１とケース５との間、および筒体部６０とケース５との間の両方に隙間が生じ、かつこれらの隙間が連通する必要があるから、運転時（運動時）に車両２００に様々な環境負荷、例えば、温度、熱、機械的な引っ張り、こじりなどが生じ、このような環境負荷によってフランジ部とケースとの間に隙間が生じた場合であっても、パッキン６とケース５との間に隙間が生じ難くなる。   In the on-vehicle discharge lamp lighting device 1 of the present embodiment described above, the packing 6 includes the flange portion 61 interposed between the coupler body 20 of the input coupler 2 and the one wall portion of the case 5, and the input coupler 2. A cylindrical body portion 60 that closes a gap between the protruding portion 22 and the inner peripheral surface of the opening portion 50a of the case 5 is provided. Here, the flange portion 61 is in contact with the case 5 in the direction along the thickness direction of the one wall portion of the case 5, whereas the cylindrical body portion 60 is in the thickness direction of the one wall portion of the case 5. Since the contact is made with the case 5 in the direction along the direction intersecting with each other, in order to create a gap between the packing 6 and the case 5, the flange portion 61 and the case 5, and the cylindrical body portion 60 Since gaps are generated between the case 5 and these gaps need to communicate with each other, various environmental loads such as temperature, heat, mechanical tension, etc. are applied to the vehicle 200 during driving (during exercise). Even when a galling or the like occurs and a gap is generated between the flange portion and the case due to such an environmental load, the gap is hardly generated between the packing 6 and the case 5.

そのため、本実施形態の車載用放電灯点灯装置１によれば、パッキン６が平面的（２次元的）ではなく立体的（３次元的）にケース５と当接しているから、単に入力カプラ２のカプラ本体２０とケース５との間にだけ介在される従来例のパッキン６（図１２，１３に示すパッキン６）に比べれば、放電灯用の点灯回路部４が収納されたケース５の気密性および防水性を向上できる。   Therefore, according to the in-vehicle discharge lamp lighting device 1 of the present embodiment, the packing 6 is in contact with the case 5 in a three-dimensional (three-dimensional) rather than a two-dimensional (two-dimensional) manner. Compared to the conventional packing 6 (packing 6 shown in FIGS. 12 and 13) interposed only between the coupler main body 20 and the case 5, the airtightness of the case 5 in which the lighting circuit portion 4 for the discharge lamp is accommodated. And waterproofness can be improved.

また、本実施形態において入力カプラ２およびパッキン６をケース５に取り付けるにあたっては、上述したように、入力カプラ２の突出部２２にパッキン６の筒体部６０を被嵌してから、突出部２２を開孔部５０ａに上記一側部の外面側より挿入するのであるが、このとき、入力カプラ２は、突出部２２およびパッキン６の筒体部６０によってケース５に仮保持されることになる。したがって、本実施形態の車載用放電灯点灯装置１によれば、入力カプラ２をケース５に取り付けるにあたって、仮保持用の治具などが不要になり、取付作業が容易に行えるようになる。   In addition, in attaching the input coupler 2 and the packing 6 to the case 5 in the present embodiment, as described above, the cylindrical portion 60 of the packing 6 is fitted on the protruding portion 22 of the input coupler 2 and then the protruding portion 22. The input coupler 2 is temporarily held in the case 5 by the protruding portion 22 and the cylindrical portion 60 of the packing 6 at this time. . Therefore, according to the in-vehicle discharge lamp lighting device 1 of the present embodiment, when the input coupler 2 is attached to the case 5, a temporary holding jig or the like is not required, and the attaching operation can be easily performed.

上述した本実施形態の車載用放電灯点灯装置１は、例えば、図２に示すような放電灯用のソケット装置３００とともに、車載用前照灯装置に利用される。ここで、ソケット装置３００は、放電灯Ｌを装着するソケット本体３１０と、電線Ｈ２とを備え、電線Ｈ２を出力カプラ３に接続することによって、車載用放電灯点灯装置１の点灯回路部４と電気的に接続され、これによって、ソケット本体３１０に装着された放電灯Ｌに給電可能となる。なお、ソケット装置３００にはイグナイタなどが設けられる。   The above-described in-vehicle discharge lamp lighting device 1 of the present embodiment is used in an in-vehicle headlamp device together with a discharge lamp socket device 300 as shown in FIG. 2, for example. Here, the socket device 300 includes a socket main body 310 to which the discharge lamp L is mounted and an electric wire H2, and the electric wire H2 is connected to the output coupler 3 so that the lighting circuit unit 4 of the in-vehicle discharge lamp lighting device 1 It is electrically connected, so that power can be supplied to the discharge lamp L attached to the socket body 310. The socket device 300 is provided with an igniter or the like.

上記車載用前照灯装置は、図３に示すように、本実施形態の車載用放電灯点灯装置１と、当該車載用放電灯点灯装置により点灯される前照灯用の放電灯Ｌが収納された灯体１００とを備えている。   As shown in FIG. 3, the in-vehicle headlamp device stores the in-vehicle discharge lamp lighting device 1 of the present embodiment and the discharge lamp L for the headlamp that is lit by the in-vehicle discharge lamp lighting device. The lamp body 100 is provided.

灯体１００は、前面が開口した箱状のハウジング１１０と、ハウジング１１０の前面開口を閉塞する透光カバー１２０とで構成されている。また、ハウジング１１０の後壁部には、ハウジング１１０内に放電灯Ｌを挿入するための挿入孔１１１が開孔されており、ハウジング１１０の後壁部における外面側には当該孔部１１１を閉塞するためのキャップ１３０が着脱自在に取り付けられ、ハウジング１１０内には、放電灯Ｌが放射する光を前方に反射して光の利用効率を高めるための反射板１４０が収納されている。なお、ハウジング１１０と透光カバー１２０との間、ハウジング１１０とキャップ１３０との間はそれぞれ防水処理がされている。   The lamp body 100 includes a box-shaped housing 110 whose front surface is open, and a translucent cover 120 that closes the front opening of the housing 110. Further, an insertion hole 111 for inserting the discharge lamp L into the housing 110 is opened in the rear wall portion of the housing 110, and the hole portion 111 is closed on the outer surface side of the rear wall portion of the housing 110. A cap 130 is detachably attached, and a reflecting plate 140 is housed in the housing 110 for reflecting the light emitted from the discharge lamp L forward and improving the light utilization efficiency. The housing 110 and the translucent cover 120 and the housing 110 and the cap 130 are waterproofed, respectively.

一方、ハウジング１１０の底壁部には、車載用放電灯点灯装置１の出力カプラ３を灯体１００内に臨ませるための開口部１１２が設けられている。この開口部１１２は、ケース５の取付用筒部５１ａの外径よりもやや大きい内径を有する円形状の孔部であり、車載用放電灯点灯装置１は、取付用筒部５１ａを開口部１１２の内側に配置する形で灯体１００の底壁部における外面側に、ねじ止めなどによって取り付けられる。このとき、灯体１００の気密性、防水性を確保するために、取付用筒部５１ａと開口部１１２の内周面との間には、Ｏリング１５０が介在される。   On the other hand, an opening 112 for allowing the output coupler 3 of the in-vehicle discharge lamp lighting device 1 to face the lamp body 100 is provided in the bottom wall portion of the housing 110. The opening 112 is a circular hole having an inner diameter that is slightly larger than the outer diameter of the mounting cylinder 51 a of the case 5, and the in-vehicle discharge lamp lighting device 1 has the mounting cylinder 51 a as the opening 112. Is attached to the outer surface of the bottom wall of the lamp body 100 by screwing or the like. At this time, an O-ring 150 is interposed between the mounting cylinder portion 51 a and the inner peripheral surface of the opening 112 in order to ensure the airtightness and waterproofness of the lamp body 100.

このような車載用前照灯装置では、車載用放電灯点灯装置１が防水処理されている灯体１００内ではなく、灯体１００外に配置されることになるが、車載用放電灯点灯装置１として本実施形態の車載用放電灯点灯装置１を用いることにより、放電灯用の点灯回路部４が収納されたケース５の気密性や防水性を向上できる。この効果は、このような車載用前照灯装置を車体２１０に備えている車両２００においても同様に得られることはいうまでもない。   In such an in-vehicle headlamp device, the in-vehicle discharge lamp lighting device 1 is disposed outside the lamp body 100, not in the waterproof lamp body 100, but the in-vehicle discharge lamp lighting device. By using the in-vehicle discharge lamp lighting device 1 of the present embodiment as 1, the airtightness and waterproofness of the case 5 in which the discharge lamp lighting circuit unit 4 is housed can be improved. Needless to say, this effect can also be obtained in the vehicle 200 in which the vehicle body 210 includes such an on-vehicle headlamp device.

ところで、気密性、防水性を考慮すれば、パッキン６のフランジ部６１とケース５との接触面積は大きいほうが好ましいが、フランジ部６１は、カプラ本体２０とケース５の上記一側壁部との間に介在されていなければ所望の効果が発揮されない。そこで、図５に示すように、フランジ部６１の外形サイズを大きくしてケース５との接触面積の拡大を図った場合には、カプラ本体２０（主としてカプラ本体２０の鍔部２０ａ）の外形サイズもフランジ部６１に合わせて大きくすることが好ましく、このようにすれば、さらなる気密性、防水性の向上が図れる。なお、図５においてＧで示す破線は、図１１に示す従来のカプラ本体２０における鍔部２０ａの外形サイズを示している。   By the way, in consideration of airtightness and waterproofness, it is preferable that the contact area between the flange portion 61 of the packing 6 and the case 5 is large, but the flange portion 61 is between the coupler main body 20 and the one side wall portion of the case 5. If it is not interposed, the desired effect is not exhibited. Therefore, as shown in FIG. 5, when the outer size of the flange portion 61 is increased to increase the contact area with the case 5, the outer size of the coupler body 20 (mainly the flange portion 20a of the coupler body 20). Also, it is preferable to increase the size in accordance with the flange portion 61. In this way, further airtightness and waterproofing can be improved. In addition, the broken line shown by G in FIG. 5 has shown the external size of the collar part 20a in the conventional coupler main body 20 shown in FIG.

また、上述したように鍔部２０ａの外形サイズを大きくする代わりに、カプラ本体２０（主にカプラ本体２０の鍔部２０ａ）の強度を強くするようにしてもよく、このようにすれば、カプラ本体２０の強度が相対的に弱い場合に比べれば、フランジ部６１とケース５との間の接圧を大きくできるから、さらなる気密性、防水性の向上が図れる。例えば、カプラ本体２０が絶縁性樹脂により形成されている場合には、より強度が高い絶縁性樹脂を用いればよく、カプラ本体２０が無機フィラ（例えばグラスファイバや、タルクなど）を充填した樹脂（例えば、エポキシ樹脂や、ポリイミド樹脂など）により形成されている場合いは、無機フィラの充填量を増やせばよい。   Further, as described above, instead of increasing the outer size of the flange portion 20a, the strength of the coupler body 20 (mainly the flange portion 20a of the coupler body 20) may be increased. Compared with the case where the strength of the main body 20 is relatively weak, since the contact pressure between the flange portion 61 and the case 5 can be increased, further airtightness and waterproofing can be improved. For example, when the coupler body 20 is made of an insulating resin, an insulating resin having higher strength may be used, and the coupler body 20 is filled with an inorganic filler (for example, glass fiber, talc, etc.) For example, when it is formed of an epoxy resin or a polyimide resin, the filling amount of the inorganic filler may be increased.

一方、本実施形態において突出部２２は、カプラ本体２０において開孔部５０ａに臨む部位に一体に突設されているが、突出部２２は必ずしもカプラ本体２０と一体である必要はなく、図６に示すように、突出部２２とカプラ本体２０とを別部材とし、突出部２２をカプラ本体２０における開孔部５０ａに臨む部位に固定することで、当該部位に突設するようにしてもよい。この場合、突出部２２としては、フェライトコアを用いることができ、このようにすれば、入力カプラ２を経由して点灯回路部４にノイズとなる高周波電流が流れ込まないようにすることができる。   On the other hand, in the present embodiment, the protruding portion 22 is integrally projected at a portion of the coupler main body 20 facing the opening 50a. However, the protruding portion 22 is not necessarily integral with the coupler main body 20, and FIG. As shown in FIG. 4, the protruding portion 22 and the coupler main body 20 may be separate members, and the protruding portion 22 may be fixed to a portion of the coupler main body 20 facing the opening portion 50a so as to protrude from the portion. . In this case, a ferrite core can be used as the protruding portion 22, and in this way, it is possible to prevent a high-frequency current that becomes noise from flowing into the lighting circuit portion 4 via the input coupler 2.

なお、本実施形態の車載用放電灯点灯装置１は、上記の例に限られるものではなく、本発明の趣旨を逸脱しない程度の変更は可能である。また、車載用放電灯点灯装置１を備えた車載用前照灯装置の構成は、図３に示す例に限定されるものではない。また、本実施形態の車載用放電灯点灯装置１により点灯させる放電灯は、前照灯に用いられるものに限られるものではなく、その他種々の用途の放電灯にも利用できる。また、図４に示す車両２００もあくまで一例であって、これに限定されない。これらの点は後述する実施形態２，３においても同様である。   Note that the in-vehicle discharge lamp lighting device 1 of the present embodiment is not limited to the above example, and can be changed without departing from the gist of the present invention. Moreover, the structure of the vehicle-mounted headlamp apparatus provided with the vehicle-mounted discharge lamp lighting device 1 is not limited to the example shown in FIG. Further, the discharge lamp to be lit by the in-vehicle discharge lamp lighting device 1 of the present embodiment is not limited to that used for the headlamp, and can be used for discharge lamps for various other purposes. The vehicle 200 shown in FIG. 4 is merely an example, and the present invention is not limited to this. These points are the same in the second and third embodiments described later.

（実施形態２）
本実施形態の車載用放電灯点灯装置１は、入力カプラ２の突出部２２と、ケース５のケースボディ５０と、パッキン６の筒体部６０の構成が上記実施形態１と異なっており、その他の構成は実施形態１と同様であるから、同一の符号を付して図示および説明を省略する。 (Embodiment 2)
The on-vehicle discharge lamp lighting device 1 of the present embodiment is different from the first embodiment in the configuration of the protruding portion 22 of the input coupler 2, the case body 50 of the case 5, and the cylindrical body portion 60 of the packing 6. Since the configuration is the same as that of the first embodiment, the same reference numerals are given and the illustration and description are omitted.

本実施形態におけるケースボディ５０は、図７に示すように、上記一側壁部の内面側における開孔部５０ａの縁部（すなわちケース５の上記一壁部の内面側における開孔部５０ａの縁部）に、周壁部５０ｇが突設されてなる。周壁部５０ｇは、内周面が開孔部５０ａの内周面と連続する形で開孔部５０ａを囲繞する筒状に形成されている。ここで、周壁部５０ｇの軸方向（ケースボディ５０の上記一側壁部の厚み方向に沿った方向）に直交する面内における周壁部５０ｇの内部空間の断面形状と、ケースボディ５０の上記一側壁部の厚み方向に沿った方向に直交する面内における開孔部５０ａの断面形状とは等しくなっている。   As shown in FIG. 7, the case body 50 in the present embodiment has an edge portion of the opening portion 50 a on the inner surface side of the one side wall portion (that is, an edge of the opening portion 50 a on the inner surface side of the one wall portion of the case 5. Part) is provided with a projecting peripheral wall 50g. The peripheral wall portion 50g is formed in a cylindrical shape surrounding the opening portion 50a so that the inner peripheral surface is continuous with the inner peripheral surface of the opening portion 50a. Here, the cross-sectional shape of the internal space of the peripheral wall portion 50g in a plane orthogonal to the axial direction of the peripheral wall portion 50g (the direction along the thickness direction of the one side wall portion of the case body 50), and the one side wall of the case body 50 The cross-sectional shape of the hole portion 50a in the plane orthogonal to the direction along the thickness direction of the portion is equal.

これに伴って、本実施形態における入力カプラ２の突出部２２は、周壁部５０ｇの内周面との間に隙間が生じる形で周壁部５０ｇの内側に入り込むように延設され、本実施形態におけるパッキン６の筒体部６０は、入力カプラ２の突出部２２と周壁部５０ｇの内周面との隙間を閉塞する形に延設されている。   Accordingly, the protruding portion 22 of the input coupler 2 in the present embodiment is extended so as to enter the inside of the peripheral wall portion 50g in a form in which a gap is formed with the inner peripheral surface of the peripheral wall portion 50g. The cylindrical portion 60 of the packing 6 extends so as to close the gap between the protruding portion 22 of the input coupler 2 and the inner peripheral surface of the peripheral wall portion 50g.

つまり、本実施形態の車載用放電灯点灯装置１では、パッキン６の筒体部６０を、周壁部５０ｇと突出部２２との間にも介在されるように延設しているので、実施形態１に比べれば、パッキン６の筒体部６０とケース５との接触面積が増加することになるから、本実施形態の車載用放電灯点灯装置１によれば、放電灯用の点灯回路部４が収納されたケース５の気密性および防水性をさらに向上できる。   That is, in the in-vehicle discharge lamp lighting device 1 according to the present embodiment, the cylindrical body portion 60 of the packing 6 is extended so as to be interposed between the peripheral wall portion 50g and the protruding portion 22. 1, the contact area between the cylindrical portion 60 of the packing 6 and the case 5 is increased. Therefore, according to the in-vehicle discharge lamp lighting device 1 of the present embodiment, the lighting circuit portion 4 for the discharge lamp. Can further improve the airtightness and waterproofness of the case 5 in which is stored.

なお、本実施形態では、周壁部５０ｇを設けるようにしているが、少なくともケースボディ５０の上記一側壁部における開孔部５０ａの縁部の厚みを実施形態１よりも厚くしてもよく、つまることころ本実施形態にのけるケースボディ５０では開孔部５０ａの長さが実施形態１よりも長くなるようになっていればよい。そして、開孔部５０ａの長さを長くした分だけ、突出部２２および筒体部６０を延設すればよい。   In the present embodiment, the peripheral wall portion 50g is provided, but at least the edge portion of the opening portion 50a in the one side wall portion of the case body 50 may be thicker than in the first embodiment. In the case body 50 according to the present embodiment, the length of the opening 50a may be longer than that of the first embodiment. And what is necessary is just to extend the protrusion part 22 and the cylindrical part 60 by the part which lengthened the length of the opening part 50a.

そして、本実施形態の車載用放電灯点灯装置１も、実施形態１と同様に、車載用前照灯装置に利用でき、車載用放電灯点灯装置１として本実施形態の車載用放電灯点灯装置１を用いることにより、実施形態１の車載用放電灯点灯装置１を用いる場合よりも放電灯用の点灯回路部４が収納されたケース５の気密性や防水性を向上できる。この点は、このような車載用前照灯装置を車体２１０に備えている車両２００においても同様である。   The in-vehicle discharge lamp lighting device 1 of the present embodiment can also be used for the in-vehicle headlamp device as in the first embodiment, and the in-vehicle discharge lamp lighting device of the present embodiment is used as the in-vehicle discharge lamp lighting device 1. By using 1, the airtightness and waterproofness of the case 5 in which the discharge lamp lighting circuit unit 4 is housed can be improved as compared with the case where the in-vehicle discharge lamp lighting device 1 of the first embodiment is used. This also applies to the vehicle 200 having such a vehicle-mounted headlamp device in the vehicle body 210.

（実施形態３）
本実施形態の車載用放電灯点灯装置１は、パッキン６の筒体部６０の構成が上記実施形態２と異なっており、その他の構成は実施形態２と同様であるから、同一の符号を付して図示および説明を省略する。 (Embodiment 3)
The on-vehicle discharge lamp lighting device 1 of the present embodiment is different from that of the second embodiment in the configuration of the cylindrical portion 60 of the packing 6, and the other configurations are the same as those of the second embodiment. Therefore, illustration and description are omitted.

本実施形態におけるパッキン６の筒体部６０の外周面は、実施形態１とは異なり、筒体部６０の外周面全面が開孔部５０ａの内周面と当接するように平坦な面になっておらず、当該外周面には、図８（ａ）に示すように上記外周面を一周する形（つまり鍔状）の突起部６０ｂが一体に突設されている。このような突起部６０ｂは、パッキン６の筒体部６０の外周面に複数（図示例では３つ）設けられており、複数の突起部６０ｂは、筒体部６０の軸方向において互いに離間している。このような突起部６０ｂは、外周面全面がケース５における筒体部６０の外周面との対向面に当接する形に形成されている。したがって、本実施形態における筒体部６０は、複数の突起部６０ｂによって、入力カプラ２の突出部２２とケース５との隙間を閉塞するようになっている。   Unlike Embodiment 1, the outer peripheral surface of the cylinder part 60 of the packing 6 in this embodiment becomes a flat surface so that the whole outer peripheral surface of the cylinder part 60 may contact | abut with the inner peripheral surface of the opening part 50a. However, as shown in FIG. 8A, the outer peripheral surface is integrally provided with a protruding portion 60b having a shape (that is, a bowl shape) that goes around the outer peripheral surface. A plurality (three in the illustrated example) of the protrusions 60 b are provided on the outer peripheral surface of the cylindrical body 60 of the packing 6, and the plurality of protrusions 60 b are separated from each other in the axial direction of the cylindrical body 60. ing. Such a protrusion 60 b is formed so that the entire outer peripheral surface abuts against the surface of the case 5 facing the outer peripheral surface of the cylindrical body 60. Therefore, the cylinder part 60 in this embodiment closes the gap between the protruding part 22 of the input coupler 2 and the case 5 by a plurality of protrusions 60b.

以上述べた本実施形態の車載用放電灯点灯装置１によれば、パッキン６の筒体部６０の外周面には、ケース５の上記対向面と突出部２２の外周面との隙間を閉塞する複数の突起部６０ｂが筒体部６０の軸方向において互いに離間する形に形成されているので、パッキン６の筒体部６０の外周面全体がケース５の上記対向面に当接する場合に比べれば、パッキン６の筒体部６０におけるケース５の上記対向面との接触面積が減少するものの、所定部位において筒体部６０とケース５の上記対向面との接圧が向上するから、筒体部６０の長さを長くしなくても、放電灯用の点灯回路部４が収納されたケース５の気密性および防水性をさらに向上できる。なお、上記の例では、筒体部６０の外周面に突起部６０ｂを設けるとしたが、筒体部６０に突起部６０を設ける代わりに、ケース５の上記対向面に筒体部６０に当接する突起部（図示せず）を設けるようにしてもよい。   According to the on-vehicle discharge lamp lighting device 1 of the present embodiment described above, a gap between the facing surface of the case 5 and the outer peripheral surface of the protruding portion 22 is closed on the outer peripheral surface of the cylindrical body portion 60 of the packing 6. Since the plurality of protrusions 60b are formed so as to be separated from each other in the axial direction of the cylindrical body portion 60, as compared with the case where the entire outer peripheral surface of the cylindrical body portion 60 of the packing 6 is in contact with the facing surface of the case 5. Although the contact area of the cylindrical body portion 60 of the packing 6 with the facing surface of the case 5 is reduced, the contact pressure between the cylindrical body portion 60 and the facing surface of the case 5 is improved at a predetermined portion. Even if the length 60 is not increased, the airtightness and waterproofness of the case 5 in which the discharge lamp lighting circuit portion 4 is housed can be further improved. In the above example, the protruding portion 60b is provided on the outer peripheral surface of the cylindrical portion 60, but instead of providing the protruding portion 60 on the cylindrical portion 60, the cylindrical portion 60 is abutted against the opposing surface of the case 5. You may make it provide the protrusion part (not shown) which touches.

ところで、図８（ｂ）に示すように、ケース５の上記対向面に、筒体部６０の複数の突起部６０ｂそれぞれと凹凸嵌合する複数の嵌合凹部５０ｈを形成するようにしてもよい。ここで、嵌合凹部５０ｈは、突起部６０ｂと凹凸嵌合した際に、突起部６０ｂとの間に隙間が生じない形に形成されている。   By the way, as shown in FIG.8 (b), you may make it form in the said opposing surface of the case 5 the some fitting recessed part 50h which carries out uneven fitting with each of the some projection part 60b of the cylindrical part 60. As shown in FIG. . Here, the fitting recess 50h is formed in such a shape that no gap is formed between the protrusion 60b and the protrusion 60b when the protrusion 60b is engaged with the protrusion 60b.

図８（ｂ）に示す例によれば、ケース５の上記対向面には、筒体部６０の突起部６０ｂと凹凸嵌合する嵌合凹部５０ｈが形成されているので、パッキン６の複数の突起部６０ｂとケース５の上記対向面に形成された嵌合凹部５０ｈとを凹凸嵌合させることによって、入力カプラ２をケース５に取り付けることができ、このときパッキン６が入力カプラ２とケース５との寸法誤差を吸収するから、入力カプラ２がケース５に対してがたついてしまうことを抑制でき、しかも、入力カプラ２をケース５に取り付けるためのねじ止めなどが必要なくなり、部品点数および組立工数を削減でき、組立作業の容易化が図れる。   According to the example shown in FIG. 8 (b), the opposing surface of the case 5 is formed with a fitting recess 50 h that fits with the protrusion 60 b of the cylindrical body 60. The input coupler 2 can be attached to the case 5 by fitting the projection 60b and the fitting recess 50h formed on the facing surface of the case 5 to the concave and convex portions. At this time, the packing 6 is connected to the input coupler 2 and the case 5 Therefore, the input coupler 2 can be prevented from rattling with respect to the case 5, and screwing or the like for attaching the input coupler 2 to the case 5 is not required. Man-hours can be reduced and assembly work can be facilitated.

また、図８（ｃ）に示すように、入力カプラ２の突出部２２におけるカプラ本体２０との反対側（ケース５内に露出する側）には、Ｌ字状の一対の係止爪よりなる狭持部２３が設けられている。この狭持部２３は、周壁部５０ｇの端面に係止されることで、カプラ本体２０との間で、ケース５（図示例ではケースボディ５０の上記一側壁部および周壁部５０ｇ）およびパッキン６のフランジ部６１を挟み込むようになっている。   Further, as shown in FIG. 8C, the protruding portion 22 of the input coupler 2 has a pair of L-shaped locking claws on the side opposite to the coupler body 20 (the side exposed in the case 5). A sandwiching portion 23 is provided. The holding portion 23 is locked to the end surface of the peripheral wall portion 50g, so that the case 5 (in the illustrated example, the one side wall portion and the peripheral wall portion 50g of the case body 50) and the packing 6 are provided between the sandwiching portion 23 and the coupler main body 20. The flange portion 61 is sandwiched.

図８（ｃ）に示す例によれば、突出部２２におけるカプラ本体２０との反対側には、カプラ本体２との間でケース５およびパッキン６のフランジ部６１を挟み込む狭持部２３が設けられているので、入力カプラ２およびケース５とフランジ部６１との接圧を高めることができるから、入力カプラ２がケース５に対してがたついてしまうことをさらに抑制でき、その上、さらなる気密性、防水性の向上が図れる。   According to the example shown in FIG. 8C, the holding portion 23 that sandwiches the flange portion 61 of the case 5 and the packing 6 between the coupler main body 2 and the coupler main body 2 is provided on the opposite side of the protruding portion 22 from the coupler main body 20. Therefore, since the contact pressure between the input coupler 2 and the case 5 and the flange portion 61 can be increased, it is possible to further suppress the input coupler 2 from rattling against the case 5 and to further increase the airtightness. And water resistance can be improved.

ところで、図８（ｃ）に示す例では狭持部２３は、周壁部５０ｇの端面に係止される係止爪であったが、図８（ｄ）に示すように、狭持部２３を樹脂により形成し、熱圧着などによって変形させて、周壁部５０ｇの端面に固定するようにしてもよく、このようにすれば、入力カプラ２およびケース５とフランジ部６１との接圧を図８（ｃ）に示す場合よりも高めることができるから、入力カプラ２がケース５に対してがたついてしまうことをさらに抑制でき、その上、さらなる気密性、防水性の向上が図れる。   By the way, in the example shown in FIG. 8C, the holding portion 23 is a locking claw locked to the end face of the peripheral wall portion 50g. However, as shown in FIG. It may be formed of resin, deformed by thermocompression bonding or the like, and fixed to the end surface of the peripheral wall portion 50g. In this way, the contact pressure between the input coupler 2 and the case 5 and the flange portion 61 is shown in FIG. Since it can be higher than the case shown in (c), it is possible to further suppress the input coupler 2 from rattling against the case 5, and to further improve the airtightness and waterproofness.

そして、本実施形態の車載用放電灯点灯装置１も、実施形態２と同様に、車載用前照灯装置に利用でき、車載用放電灯点灯装置１として本実施形態の車載用放電灯点灯装置１を用いることにより、放電灯用の点灯回路部４が収納されたケース５の気密性や防水性を向上できる。この点は、このような車載用前照灯装置を車体２１０に備えている車両２００においても同様である。   The in-vehicle discharge lamp lighting device 1 of the present embodiment can also be used for the in-vehicle headlamp device as in the second embodiment, and the in-vehicle discharge lamp lighting device of the present embodiment as the in-vehicle discharge lamp lighting device 1. By using 1, the airtightness and waterproofness of the case 5 in which the lighting circuit portion 4 for the discharge lamp is housed can be improved. This also applies to the vehicle 200 having such a vehicle-mounted headlamp device in the vehicle body 210.

なお、本実施形態の車載用放電灯点灯装置１の技術的思想は実施形態１にも適用でき、この場合、ケース５における筒体部６０の外周面との対向面は、ケースボディ５０の開孔部５０ａの内周面となる。   The technical idea of the in-vehicle discharge lamp lighting device 1 of the present embodiment can also be applied to the first embodiment. In this case, the surface of the case 5 that faces the outer peripheral surface of the cylindrical portion 60 is the opening of the case body 50. It becomes an inner peripheral surface of the hole 50a.

実施形態１の車載用放電灯点灯装置の要部を示し、（ａ）は分解斜視図、（ｂ）は概略断面図である。The principal part of the vehicle-mounted discharge lamp lighting device of Embodiment 1 is shown, (a) is a disassembled perspective view, (b) is a schematic sectional drawing. 同上の車載用放電灯点灯装置の使用例を示す説明図である。It is explanatory drawing which shows the usage example of a vehicle-mounted discharge lamp lighting device same as the above. 同上の車載用放電灯点灯装置の使用例を示す説明図である。It is explanatory drawing which shows the usage example of a vehicle-mounted discharge lamp lighting device same as the above. 同上の車載用放電灯点灯装置の使用例を示す説明図である。It is explanatory drawing which shows the usage example of a vehicle-mounted discharge lamp lighting device same as the above. 同上における他例の入力カプラの平面図である。It is a top view of the input coupler of the other example same as the above. 同上の他例の車載用放電灯点灯装置の要部の概略断面図である。It is a schematic sectional drawing of the principal part of the vehicle-mounted discharge lamp lighting device of the other example same as the above. 実施形態２の車載用放電灯点灯装置の要部の概略断面図である。It is a schematic sectional drawing of the principal part of the vehicle-mounted discharge lamp lighting device of Embodiment 2. 実施形態３の車載用放電灯点灯装置の要部の概略断面図である。It is a schematic sectional drawing of the principal part of the vehicle-mounted discharge lamp lighting device of Embodiment 3. 従来例の車載用放電灯点灯装置の斜視図である。It is a perspective view of the vehicle-mounted discharge lamp lighting device of a prior art example. 同上の車載用放電灯点灯装置の分解斜視図である。It is a disassembled perspective view of the vehicle-mounted discharge lamp lighting device same as the above. 同上における入力カプラの平面図である。It is a top view of the input coupler same as the above. （ａ）は同上におけるケースの部分斜視図、（ｂ）は同上の車載用放電灯点灯装置の要部の分解斜視図である。(A) is the fragmentary perspective view of the case in the same as the above, (b) is an exploded perspective view of the principal part of a vehicle-mounted discharge lamp lighting device same as the above. （ａ）は同上におけるケースの一部を切り欠いた側面図、（ｂ）は同上の車載用放電灯点灯装置の要部の概略断面図である。(A) is the side view which notched a part of case in the same as the above, (b) is a schematic sectional drawing of the principal part of a vehicle-mounted discharge lamp lighting device same as the above.

符号の説明Explanation of symbols

１ 車載用放電灯点灯装置
２ 入力カプラ
５ ケース
６ パッキン
２０ カプラ本体
２２ 突出部
２３ 狭持部
５０ａ 開孔部
５０ｇ 周壁部
５０ｈ 嵌合凹部
６０ 筒体部
６０ｂ 突起部
６１ フランジ部
１００ 灯体
２００ 車両
２１０ 車体
Ｌ 放電灯 DESCRIPTION OF SYMBOLS 1 Vehicle-mounted discharge lamp lighting device 2 Input coupler 5 Case 6 Packing 20 Coupler main body 22 Projection part 23 Nipping part 50a Opening part 50g Peripheral wall part 50h Fitting recessed part 60 Cylindrical part 60b Protrusion part 61 Flange part 100 Lamp body 200 Vehicle 210 Body L Discharge lamp

Claims (7)

車載の直流電源との接続に用いられる入力カプラと、放電灯との接続に用いられる出力カプラと、入力カプラを経由して直流電源より得た電力を元にして放電灯点灯用の電力を生成し出力カプラを経由して放電灯に供給する点灯回路部と、点灯回路部が収納され且つ入力カプラが一壁部に設けられるとともに出力カプラが上記一壁部とは別の壁部に設けられ、車両に設置された灯体内に出力カプラを臨ませる形で当該灯体に取り付けられたケースと、弾性体よりなり当該ケースと入力カプラとの間に介在されたパッキンとを備え、
ケースの上記一壁部には、ケースの内外を連通する形の開孔部が形成され、
入力カプラは、開孔部を閉塞する形でケースの上記一壁部の外面側に取り付けられるカプラ本体と、カプラ本体において開孔部に臨む部位に突設され開孔部の内周面全面との間に隙間が生じる形で開孔部内に入り込む突出部とを備え、
パッキンは、入力カプラの突出部に被嵌され開孔部の内周面と突出部との隙間を閉塞する筒体部と、筒体部におけるカプラ本体側の端部に一体に設けられカプラ本体とケースの上記一壁部との間に介在されたフランジ部とを備えていることを特徴とする車載用放電灯点灯装置。 Generates power for discharge lamp lighting based on input coupler used for connection to in-vehicle DC power supply, output coupler used for connection to discharge lamp, and power obtained from DC power supply via input coupler A lighting circuit unit that supplies the discharge lamp via the output coupler, and the lighting circuit unit is housed and the input coupler is provided on one wall, and the output coupler is provided on a wall different from the one wall. A case attached to the lamp body so that the output coupler faces the lamp body installed in the vehicle, and a packing made of an elastic body and interposed between the case and the input coupler,
The one wall portion of the case is formed with an opening that communicates the inside and outside of the case.
The input coupler includes a coupler main body that is attached to the outer surface side of the one wall portion of the case so as to close the opening portion, and an entire inner peripheral surface of the opening portion that protrudes from a portion of the coupler body that faces the opening portion. And a protrusion that enters the aperture in a form that creates a gap between
The packing is integrally provided at the end of the cylindrical body portion that is fitted to the protruding portion of the input coupler and closes the gap between the inner peripheral surface of the opening and the protruding portion, and at the end of the cylindrical portion on the coupler main body side. And a flange portion interposed between the case and the one wall portion of the case. ケースの上記一壁部の内面側における開孔部の縁部には、内周面が開孔部の内周面と連続する形で開孔部を囲繞する周壁部が突設され、
入力カプラの突出部は、周壁部の内周面との間に隙間が生じる形で周壁部の内側に入り込むように延設され、
パッキンの筒体部は、入力カプラの突出部と周壁部の内周面との隙間を閉塞する形に延設されていることを特徴とする請求項１記載の車載用放電灯点灯装置。 At the edge of the opening portion on the inner surface side of the one wall portion of the case, a peripheral wall portion is provided so as to surround the opening portion so that the inner peripheral surface is continuous with the inner peripheral surface of the opening portion,
The protruding portion of the input coupler extends so as to enter the inside of the peripheral wall portion in a form in which a gap is formed between the inner peripheral surface of the peripheral wall portion,
The in-vehicle discharge lamp lighting device according to claim 1, wherein the cylindrical portion of the packing is extended so as to close a gap between the protruding portion of the input coupler and the inner peripheral surface of the peripheral wall portion. パッキンの筒体部の外周面には、ケースにおける筒体部の外周面との対向面と入力カプラの突出部の外周面との隙間を閉塞する複数の突起部が筒体部の軸方向において互いに離間する形に形成されていることを特徴とする請求項１または２記載の車載用放電灯点灯装置。   On the outer peripheral surface of the cylindrical body portion of the packing, there are a plurality of protrusions that close the gap between the surface of the case facing the outer peripheral surface of the cylindrical body portion and the outer peripheral surface of the protruding portion of the input coupler in the axial direction of the cylindrical body portion. The in-vehicle discharge lamp lighting device according to claim 1 or 2, wherein the lighting device is formed in a shape separated from each other. ケースの上記対向面には、突起部と凹凸嵌合する嵌合凹部が形成されていることを特徴とする請求項３記載の車載用放電灯点灯装置。   4. The in-vehicle discharge lamp lighting device according to claim 3, wherein a fitting recess is formed on the facing surface of the case so as to be engaged with the protrusion. 突出部におけるカプラ本体との反対側には、カプラ本体との間でケースおよびパッキンのフランジ部を挟み込む狭持部が設けられていることを特徴とする請求項１〜４のうちいずれか１項記載の車載用放電灯点灯装置。   5. The nipping portion for sandwiching the flange portion of the case and the packing with the coupler main body is provided on the opposite side of the protrusion from the coupler main body. 6. The in-vehicle discharge lamp lighting device described. 請求項１〜５のうちいずれか１項記載の車載用放電灯点灯装置と、当該車載用放電灯点灯装置により点灯される前照灯用の放電灯が収納された灯体とを備えていることを特徴とする車載用前照灯装置。   An in-vehicle discharge lamp lighting device according to any one of claims 1 to 5 and a lamp body in which a discharge lamp for a headlamp that is lit by the in-vehicle discharge lamp lighting device is housed. An in-vehicle headlamp device characterized by that. 請求項６記載の車載用前照灯装置を車体に備えていることを特徴とする車両。   A vehicle comprising the vehicle headlamp device according to claim 6 on a vehicle body.
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JP2012113832A (en) * 2010-11-19 2012-06-14 Panasonic Corp Lighting device for vehicle-mounted headlamp
KR20150115551A (en) * 2014-04-04 2015-10-14 엘지이노텍 주식회사 Light emitting module and lighting apparatus having thereof
KR102310644B1 (en) * 2014-04-04 2021-10-14 쑤저우 레킨 세미컨덕터 컴퍼니 리미티드 Light emitting module and lighting apparatus having thereof

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