JP2010108883A

JP2010108883A - Cap, discharge lamp therewith, and light source device

Info

Publication number: JP2010108883A
Application number: JP2008282570A
Authority: JP
Inventors: Yoshikazu Kobayashi; 義和小林; Hirotaka Suzu; 浩隆鈴
Original assignee: Sanken Electric Co Ltd
Current assignee: Sanken Electric Co Ltd
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2010-05-13

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that it is difficult to connect a cap with a lead in a good condition in a cold-cathode discharge lamp. <P>SOLUTION: The cap 11 to be mounted in the discharge lamp has a metallic cap body 12 with an inner diameter large enough to put the glass tube 4 of the discharge lamp therein, a lead connecting unit 13, and a coupling unit 14. The lead connecting unit 13 includes: first and second lead holding units 19, 20 disposed opposite to each other so as to interpose the lead, extending in the axial direction of the cap body, and formed to hold the lead 6; and an intermediate portion 21 connecting these lead holding units to each other, formed opposite to the end side of the glass tube 4, and having an opening 22 to pass the lead 6 therethrough. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、例えば冷陰極蛍光放電灯（ＣＣＦＬ）等の放電灯、及びこの放電灯のための口金、及び放電灯を使用した光源装置に関する。 The present invention relates to a discharge lamp such as a cold cathode fluorescent discharge lamp (CCFL), a base for the discharge lamp, and a light source device using the discharge lamp.

ＴＶモニター、パソコン等の液晶表示装置のバックライト光源として使用する冷陰極蛍光放電灯（ＣＣＦＬ）は、例えば特開２００７−２３４５５１号公報（特許文献１）で公知である。図１に特許文献１に開示されたものと実質的に同一の口金無し冷陰極蛍光放電管１（以下、単に口金無し放電管と呼ぶ。）が示されている。この口金無し放電管１は、対の電極２，３を包囲し且つ水銀が封入されている円筒状のガラス管４と、このガラス管４の内壁に形成された蛍光体層５と、ガラス管４の対の端部の中心からガラス管４の軸方向外側に導出された対のリード６，７とから成る。図１の口金無し放電管１を点灯させるためには、図示されていない電源から対のリード６，７に所定の電圧を印加しなければならない。口金無し放電管１を電源に容易に接続するために、図１の口金無し放電管１に図示されていないベース又はキャップ又はランプベース又はコネクタと呼ぶこともできる口金を装着して口金付き放電管即ち放電灯を構成し、基板又は固定板に配置されている対のコネクタ（ホルダー）に口金付き放電灯を装着する。対のコネクタ（ホルダー）は電源に接続されているので、図１の口金無し放電管１の対のリード６，７は対の口金と対のコネクタ（ホルダー）とを介して電源に接続される。 A cold cathode fluorescent discharge lamp (CCFL) used as a backlight light source of a liquid crystal display device such as a TV monitor or a personal computer is known, for example, in Japanese Patent Application Laid-Open No. 2007-234551 (Patent Document 1). FIG. 1 shows a cold cathode fluorescent discharge tube 1 without a cap substantially the same as that disclosed in Patent Document 1 (hereinafter simply referred to as a discharge tube without a cap). The capless discharge tube 1 includes a cylindrical glass tube 4 that surrounds a pair of electrodes 2 and 3 and is filled with mercury, a phosphor layer 5 formed on the inner wall of the glass tube 4, and a glass tube. It consists of a pair of leads 6 and 7 led out from the center of the ends of the four pairs outward in the axial direction of the glass tube 4. In order to light the discharge tube 1 without a cap in FIG. 1, a predetermined voltage must be applied to the pair of leads 6 and 7 from a power source (not shown). In order to easily connect the discharge tube 1 without a cap to a power source, a discharge tube 1 with a cap by mounting a cap, which can be called a base, a cap, a lamp base, or a connector, not shown, is attached to the discharge tube 1 without a cap in FIG. That is, a discharge lamp is configured, and a discharge lamp with a cap is attached to a pair of connectors (holders) arranged on a substrate or a fixed plate. Since the pair of connectors (holders) are connected to the power source, the pair of leads 6 and 7 of the discharge tube 1 without cap shown in FIG. 1 are connected to the power source via the pair of bases and the pair of connectors (holders). .

ところで、口金は、特許文献１に開示されているように、放電管１の対のリード６，７と口金本体とを電気的に接続するために、リード接続部と、リード接続部を口金本体に電気的且つ機械的に連結するための連結部とを有する。特許文献１に開示されているリード接続部は、帯状の連結部よりも幅広に形成され、リードを位置決めするための孔又は溝を有する。従って、リードをリード接続部の所望位置に比較的に正確に接続することができる。しかし、リードとリード接続部との接続の信頼性を更に高めることが要求されている。 By the way, as disclosed in Patent Document 1, in order to electrically connect the pair of leads 6 and 7 of the discharge tube 1 to the base body, the base is connected to the lead connection portion and the lead connection portion. And a connecting portion for electrical and mechanical connection. The lead connecting portion disclosed in Patent Document 1 is formed wider than the strip-shaped connecting portion, and has a hole or a groove for positioning the lead. Therefore, it is possible to connect the lead to the desired position of the lead connection portion relatively accurately. However, it is required to further improve the reliability of the connection between the lead and the lead connection portion.

また、小型化された光源装置において、放電灯の熱で放電灯近傍の他の部品（例えば樹脂製光学シート）の変形又は劣化が生じるおそれがあるので、放電灯又は光源装置の放熱性の向上が要求されている。
特開２００７−２３４５５１号公報 Further, in a miniaturized light source device, the heat of the discharge lamp may cause deformation or deterioration of other components in the vicinity of the discharge lamp (for example, a resin optical sheet), so that the heat dissipation of the discharge lamp or the light source device is improved. Is required.
JP 2007-234551 A

従って、本発明の目的はリードとリード接続部との接続の信頼性を高めることができる口金、放電灯、及び光源装置を提供することである。 Accordingly, an object of the present invention is to provide a base, a discharge lamp, and a light source device that can improve the reliability of connection between a lead and a lead connection portion.

上記課題を解決するための本発明は、
対の電極と、該対の電極を包囲しているガラス管と、前記対の電極にそれぞれ接続され且つ前記ガラス管の両端部から前記ガラス管の外側にそれぞれ導出された対のリードとを有する放電管に装着するための口金であって、
前記ガラス管の一端部分を覆い且つ保持するための筒状の口金本体と、
前記リードを接続するためのリード接続部と、
前記リード接続部を前記口金本体に電気的及び機械的に連結させるために前記リード接続部と前記口金本体との間に設けられた連結部と、
を備え、前記リード接続部は、相互間に前記リードを介在させることができるように互いに対向配置され且つ前記リードに沿って前記連結部から遠ざかる方向に延び且つ前記リードと接触することができるように形成されている第１及び第２の部分と、前記第１及び第２の部分を相互に連結しており且つ且つ前記リードを挿通させるための開口を有している中間部分とから成ることを特徴とする口金に係わるものである。 The present invention for solving the above problems is as follows.
A pair of electrodes, a glass tube surrounding the pair of electrodes, and a pair of leads respectively connected to the pair of electrodes and led out from both ends of the glass tube to the outside of the glass tube A base for mounting on a discharge tube,
A cylindrical base body for covering and holding one end of the glass tube;
A lead connection for connecting the leads;
A connecting portion provided between the lead connecting portion and the base body for electrically and mechanically connecting the lead connecting portion to the base body;
And the lead connecting portions are arranged so as to face each other so that the leads can be interposed therebetween, and extend in a direction away from the connecting portion along the leads, and can be in contact with the leads. A first portion and a second portion formed in the first portion; and an intermediate portion that interconnects the first and second portions and has an opening through which the lead is inserted. It is related to the base characterized by the above.

なお、請求項７に示すように、対の電極と、該対の電極を包囲しているガラス管と、前記対の電極にそれぞれ接続され且つ前記ガラス管の両端部から前記ガラス管の外側にそれぞれ導出された対のリードとを有する放電管と、該放電管に装着された口金とから成る放電灯において、前記口金は、前記ガラス管の一端部分を覆い且つ保持している筒状の口金本体と、前記リードが接続されたリード接続部と、前記リード接続部を前記口金本体に電気的及び機械的に連結させるために前記リード接続部と前記口金本体との間に設けられた連結部とを備え、前記リード接続部は、相互間に前記リードを介在させることができるように互いに対向配置され且つ前記リードに沿って前記連結部から遠ざかる方向に延び且つ前記リードを挟持している第１及び第２の部分と、前記第１及び第２の部分を相互に連結しており且つ前記リードを挿通させるための開口を有している中間部分とから成ることが望ましい。
また、請求項２及び請求項８に示すように、前記リード接続部の前記第１及び第２の部分は、前記ガラス管に前記口金本体が装着される前に前記リードの径よりも広い対向間隔を有し、前記ガラス管に前記口金本体が装着された後に塑性変形されて前記リードを挟持することが望ましい。
また、請求項３及び請求項９に示すように、前記リード接続部の前記第１及び第２の部分は、前記ガラス管に前記口金本体が装着される前に前記リードの径よりも狭い対向間隔を有し、前記ガラス管に前記口金本体が装着された時に対向間隔が広がるように弾性変形して前記リードを挟持することが望ましい。
また、請求項４及び請求項１０に示すように、前記中間部分の前記開口は、前記リードよりも大きい径を有する孔であることが望ましい。
また、請求項５及び請求項１１に示すように、前記中間部分の前記開口は、Ｕ字状又はコ字状の切り欠きであることが望ましい。
また、請求項６及び請求項１２に示すように、前記連結部は、前記リード接続部の前記中間部分に結合されていることが望ましい。
また、請求項１３に示すように、前記第１及び第２のリード挟持部分は、前記リードに対して溶接されていることが望ましい。
また、請求項１４に示すように、対の電極と、該対の電極を包囲しているガラス管と、前記対の電極にそれぞれ接続され且つ前記ガラス管の両端部から前記ガラス管の外側にそれぞれ導出された対のリードとを有する放電管と該放電管に装着された口金とから成る放電灯を複数個配置した光源装置において、各放電灯の口金は、前記ガラス管の一端部分を覆い且つ保持している筒状の口金本体と、前記リードが接続されたリード接続部と、前記リード接続部を前記口金本体に電気的及び機械的に連結させるために前記リード接続部と前記口金本体との間に設けられた連結部とを備え、前記リード接続部は、相互間に前記リードを介在させることができるように互いに対向配置され且つ前記リードに沿って前記連結部から遠ざかる方向に延び且つ前記リードを挟持している第１及び第２の部分と、前記第１及び第２の部分を相互に連結しており且つ前記リードを挿通させるための開口を有している中間部分とから成ることが望ましい。 According to a seventh aspect of the present invention, a pair of electrodes, a glass tube surrounding the pair of electrodes, and connected to the pair of electrodes, respectively, and from both ends of the glass tube to the outside of the glass tube In a discharge lamp comprising a discharge tube having a pair of leads led out and a base mounted on the discharge tube, the base covers and holds one end portion of the glass tube, and is a cylindrical base. A main body; a lead connecting portion to which the lead is connected; and a connecting portion provided between the lead connecting portion and the base body for electrically and mechanically connecting the lead connecting portion to the base body. The lead connecting portions are arranged to face each other so that the leads can be interposed therebetween, extend in a direction away from the connecting portion along the leads, and sandwich the leads. 1 And beauty second part, that consists of the first and second portions are connected to each other and the intermediate portion has an opening for inserting the lead is desirable.
Further, as shown in claim 2 and claim 8, the first and second portions of the lead connecting portion are opposed to each other wider than the diameter of the lead before the base body is mounted on the glass tube. It is desirable that the lead body is clamped by being plastically deformed after the base body is mounted on the glass tube.
Further, as shown in claim 3 and claim 9, the first and second portions of the lead connecting portion are opposed to each other with a diameter smaller than the diameter of the lead before the base body is attached to the glass tube. It is desirable that the lead is sandwiched by being elastically deformed so that the facing interval is widened when the base body is mounted on the glass tube.
In addition, as shown in claim 4 and claim 10, it is desirable that the opening of the intermediate portion is a hole having a larger diameter than the lead.
Moreover, as shown in Claim 5 and Claim 11, it is desirable that the opening of the intermediate portion is a U-shaped or U-shaped notch.
Moreover, as shown in Claim 6 and Claim 12, it is desirable that the connecting portion is coupled to the intermediate portion of the lead connecting portion.
According to a thirteenth aspect of the present invention, it is desirable that the first and second lead clamping portions are welded to the leads.
Furthermore, as shown in claim 14, a pair of electrodes, a glass tube surrounding the pair of electrodes, and connected to the pair of electrodes, respectively, and from both ends of the glass tube to the outside of the glass tube In a light source device in which a plurality of discharge lamps each including a discharge tube having a pair of leads led out and a base attached to the discharge tube are arranged, the base of each discharge lamp covers one end portion of the glass tube. And a cylindrical base body holding the lead connection part to which the lead is connected, and the lead connection part and the base body to electrically and mechanically connect the lead connection part to the base body. And the lead connecting portions are arranged to face each other so that the leads can be interposed therebetween, and extend in a direction away from the connecting portion along the leads. And The first and second portions sandwiching the lead, and an intermediate portion interconnecting the first and second portions and having an opening through which the lead is inserted. It is desirable.

本発明に従う口金のリード接続部は、放電管に口金が装着された時に相互間にリードを介在させることができるように互いに対向配置され且つリードに沿って連結部から遠ざかる方向に延び且つリードと接触することができるように形成されている第１及び第２の部分と、第１及び第２の部分を相互に連結しており且つ且つリードを挿通させるための開口を有している中間部分とから成る。口金のリード接続部の第１及び第２の部分はリードを挟み込むように塑性変形（カシメによる変形）させること、又は弾性を有してリードを挟持することができる。これにより、リードとリード接続部との電気的及び機械的に結合の信頼性が特許文献１よりも高くなる。 The lead connecting portions of the base according to the present invention are arranged to face each other so that the leads can be interposed between the bases when the base is mounted on the discharge tube, and extend in a direction away from the connecting portion along the leads. First and second portions formed so as to be in contact with each other, and an intermediate portion interconnecting the first and second portions and having an opening for inserting a lead It consists of. The first and second portions of the lead connecting portion of the base can be plastically deformed (deformed by caulking) so as to sandwich the lead, or the lead can be sandwiched with elasticity. Thereby, the reliability of electrical and mechanical coupling between the lead and the lead connection portion is higher than that of Patent Document 1.

次に、図面を参照して本発明の実施形態に従う口金及びこれを装着した口金付き放電灯及び光源装置を説明する。 Next, a base according to an embodiment of the present invention, a discharge lamp with a base attached thereto, and a light source device will be described with reference to the drawings.

先ず、図１〜図１４を参照して本発明の実施例１に従う口金、放電灯、及び光源装置を説明する。実施例１に従う放電灯１０が図２〜図７に示され、放電灯１０に使用されている口金１１が図８〜図１０に示され、口金１１のリード接続部１３の第１及び第２の板状部分１９，２０が図１１に示され、口金１１の拡大されたリード接続部１３及び連結部１４が図１２に示され、光源装置３０の一部が図１３に示され、ホルダー３１に装着された放電灯１０が図１４に示されている。 First, a base, a discharge lamp, and a light source device according to Embodiment 1 of the present invention will be described with reference to FIGS. The discharge lamp 10 according to the first embodiment is shown in FIGS. 2 to 7, the base 11 used in the discharge lamp 10 is shown in FIGS. 8 to 10, and the first and second of the lead connection portion 13 of the base 11. The plate-like portions 19 and 20 are shown in FIG. 11, the enlarged lead connecting portion 13 and the connecting portion 14 of the base 11 are shown in FIG. 12, a part of the light source device 30 is shown in FIG. The discharge lamp 10 mounted on is shown in FIG.

放電灯１０は、図２〜図７に示すように口金無し放電管１と口金１１との組立体から成る。実施例１の口金無し放電管１は、図１において同一符号で示すものと同一に構成され、対の電極２，３を包囲し且つ水銀が封入されている円筒状のガラス管４と、このガラス管４の内壁に形成された蛍光体層５と、ガラス管４の対の端部からガラス管４の軸方向に直線状に導出された対のリード６，７とから成る。図２、図３、図６には、図示を簡略化するために放電灯１０の一部のみが示され、一方のリード６に接続された一方の口金１１のみが示されているが、図２、図３、図６に図示されていない他方のリード７に対しても図２、図３、図６に示す口金１１と同一構成の別な口金が接続されている。
なお、放電管１の対のリード６，７に対して互いに異なる構成の口金を接続することもできる。 As shown in FIGS. 2 to 7, the discharge lamp 10 includes an assembly of a discharge tube 1 without a cap 1 and a cap 11. A discharge tube 1 without a cap according to the first embodiment is configured in the same manner as that indicated by the same reference numeral in FIG. 1, and includes a cylindrical glass tube 4 that surrounds a pair of electrodes 2 and 3 and is filled with mercury. It consists of a phosphor layer 5 formed on the inner wall of the glass tube 4 and a pair of leads 6 and 7 led out linearly in the axial direction of the glass tube 4 from the ends of the pair of glass tubes 4. 2, 3 and 6, only a part of the discharge lamp 10 is shown to simplify the illustration, and only one base 11 connected to one lead 6 is shown. 2. Another base having the same configuration as the base 11 shown in FIGS. 2, 3 and 6 is connected to the other lead 7 which is not shown in FIGS.
It is also possible to connect bases having different configurations to the pair of leads 6 and 7 of the discharge tube 1.

口金１１は、これのみを示す図８〜図１１から明らかなように、ガラス管４を挿入することができる内径を有する金属性の円筒口金本体１２と、リード６に接続されるリード接続部１３と、リード接続部１３を口金本体１２に電気的及び機械的に結合している連結部１４と、放電管１の位置を制限するための突出片１５とを有する。この口金１１は、例えば表面にニッケルメッキが施された燐青銅から成る厚み０．３ｍｍの金属板をプレス加工することによって形成されている。勿論、口金１１を別の金属板（例えば金メッキが施された銅合金）で形成することもできる。 As is apparent from FIGS. 8 to 11 showing only this, the base 11 is a metallic cylindrical base body 12 having an inner diameter into which the glass tube 4 can be inserted, and a lead connecting portion 13 connected to the lead 6. And a connecting portion 14 that electrically and mechanically couples the lead connecting portion 13 to the base body 12 and a protruding piece 15 for limiting the position of the discharge tube 1. The base 11 is formed, for example, by pressing a metal plate having a thickness of 0.3 mm made of phosphor bronze whose surface is plated with nickel. Of course, the base 11 can also be formed of another metal plate (for example, a copper alloy plated with gold).

口金本体１２は、円筒状のガラス管４を挿入するためにガラス管４の外径（例えば４．４ｍｍ）よりも大きい内径（例えば４．６ｍｍ）を有する円筒状に形成されている。但し、この実施例１の口金本体１２は図１０から明らかなように軸方向に延びているスリット１６を有している。従って、口金本体１２は完全な円筒では無く、スリット１６及び突起１７を有する円筒である。口金本体１２の円周方向におけるスリット１６の幅は例えば０．２ｍｍであり、口金本体１２の円周の数十分の１以下であるので、口金本体１２は全体として円筒と見なせる形状を有する。本願において、円筒状又は筒状の口金本体は、スリット１６を有するものと有さないものとの両方を意味している。口金本体１２はスリット１６を有するので、口金本体１２はこの径方向に弾性変形可能である。口金本体１２の軸方向の長さは例えば７ｍｍであり、図６から明らかなようにガラス管４の端部１８から一方の電極２の右端までを覆うように決定されている。しかし、口金本体１２の軸方向の長さを、図６よりも短く又は長くなるように変えることもできる。 The base body 12 is formed in a cylindrical shape having an inner diameter (for example, 4.6 mm) larger than the outer diameter (for example, 4.4 mm) of the glass tube 4 in order to insert the cylindrical glass tube 4. However, the base body 12 of the first embodiment has a slit 16 extending in the axial direction as is apparent from FIG. Accordingly, the base body 12 is not a complete cylinder but a cylinder having slits 16 and protrusions 17. The width of the slit 16 in the circumferential direction of the base body 12 is, for example, 0.2 mm, and is less than one tenth of the circumference of the base body 12, so that the base body 12 has a shape that can be regarded as a cylinder as a whole. In the present application, a cylindrical or cylindrical base body means both having a slit 16 and not having a slit 16. Since the base body 12 has the slit 16, the base body 12 can be elastically deformed in this radial direction. The length of the base body 12 in the axial direction is, for example, 7 mm, and is determined so as to cover from the end 18 of the glass tube 4 to the right end of one electrode 2 as is apparent from FIG. However, the axial length of the base body 12 can be changed to be shorter or longer than that in FIG.

図４及び図５に最も明らかに示されている口金本体１２に設けられた３個の突起１７は、口金本体１２の径方向内側に半球状に突出し、ガラス管４の外周面に弾性を有して当接するように形成されている。突起１７の口金本体１２からの突出の高さは、口金本体１２にガラス管４を挿入することができ且つ口金本体１２がガラス管４を弾性的に保持することができるように決定され、例えば０．１５ｍｍである。また、突起１７の平面的に見た直径は例えば１ｍｍである。この突起１７は口金１１のプレス加工時に同時に形成されている。３個の突起１７は、口金本体１２の周方向において約１２０度間隔に配置されている。口金本体１２にガラス管４を挿入する前における３個の突起１７の内接円の直径はガラス管４の直径よりも少し小さい。口金本体１２にガラス管４を挿入した状態では、突起１７の僅かな弾性変形及びスリット１６に基づく口金本体１２の弾性変形によって３個の突起１７の内接円の直径はガラス管４の直径と同一になり、口金本体１２はガラス管４に安定的に嵌合され、ガラス管４は口金本体１２に安定的に保持される。なお、口金本体１２の軸方向において突起１７と異なる位置に、口金本体１２の径方向内側に半球状に突出する突起１７と同じ形状又は異なる形状の突起を追加して設けることができる。 The three protrusions 17 provided on the base body 12 most clearly shown in FIGS. 4 and 5 project in a hemispherical shape on the inner side in the radial direction of the base body 12 and have elasticity on the outer peripheral surface of the glass tube 4. And are formed so as to contact each other. The height of the protrusion 17 protruding from the base body 12 is determined so that the glass tube 4 can be inserted into the base body 12 and the base body 12 can elastically hold the glass tube 4. 0.15 mm. Further, the diameter of the protrusion 17 in a plan view is 1 mm, for example. The protrusions 17 are formed at the same time as the die 11 is pressed. The three protrusions 17 are arranged at intervals of about 120 degrees in the circumferential direction of the base body 12. The diameter of the inscribed circle of the three protrusions 17 before inserting the glass tube 4 into the base body 12 is slightly smaller than the diameter of the glass tube 4. In a state where the glass tube 4 is inserted into the base body 12, the diameter of the inscribed circle of the three protrusions 17 is equal to the diameter of the glass tube 4 due to slight elastic deformation of the protrusion 17 and elastic deformation of the base body 12 based on the slit 16. The base body 12 is stably fitted to the glass tube 4, and the glass tube 4 is stably held by the base body 12. In addition, in the axial direction of the base body 12, a protrusion having the same shape or different shape as the protrusion 17 protruding in a hemispherical shape can be provided on the radial inner side of the base body 12.

口金本体１２に対してリード接続部１３を電気的及び機械的に結合させるための連結部１４は、例えば０．５〜１．０ｍｍの幅を有している帯状導体であり、口金本体１２からこの軸方向に導出された部分と半径方向（垂直方向）に屈曲された部分とを有し、口金本体１２の軸方向と半径方向とのいずれの方向にも僅かに弾性変形可能に形成されている。図６の口金本体１２の半径方向における連結部１４の高さは、口金本体１２とリード６との間隔よりも低い。 The connecting portion 14 for electrically and mechanically coupling the lead connecting portion 13 to the base body 12 is a strip-shaped conductor having a width of 0.5 to 1.0 mm, for example. It has a portion led in the axial direction and a portion bent in the radial direction (vertical direction), and is formed so as to be slightly elastically deformable in both the axial direction and the radial direction of the base body 12. Yes. The height of the connecting portion 14 in the radial direction of the base body 12 in FIG. 6 is lower than the distance between the base body 12 and the lead 6.

リード接続部１３は、口金本体１２及び連結部１４と一体に形成され、互いに対向する対の突片又は対の板状体又は対の部分と呼ぶこともできる第１及び第２のリード挟持部分１９，２０とこれ等の相互連結部分と呼ぶこともできる中間部分２１とから成る。この実施例１及び後述する各実施例において、第１及び第２の部分としての第１及び第２のリード挟持部分１９，１９ａ、１９ｂ及び２０，２０ａ、２０ｂと中間部分２１，２１ａとのそれぞれの境界は、鎖線１００で示されている。この鎖線１００で示されている境界を第１及び第２のリード挟持部分１９，１９ａ、１９ｂ及び２０，２０ａ、２０ｂの先端側又は中間部分２１，２１ａの開口２２，２２ａ側に移動することができる。また、第１及び第２のリード挟持部分１９，１９ａ、１９ｂ及び２０，２０ａ、２０ｂを形成するための中間部分２１，２１ａにおける屈曲箇所を図１２の開口２２，２２ａの左端及び右端に一致させること、又は開口２２，２２ａの左端及び右端よりも口金本体１２の径方向内側にすることができる。
第１及び第２のリード挟持部分１９，２０は、これらの相互間にリード６を介在させることができるように互いに対向配置され且つリード６に沿って連結部１４から遠ざかる方向に延び且つリード６を少なくとも一部で挟持することができるように形成されている。図１１に示すようにガラス管４に口金本体１１が装着される前における第１及び第２のリード挟持部分１９，２０の相互間隔Ｗ１は、リード６の径よりも僅かに広い例えば１．２ｍｍに設定されている。なお、後述から明らかになるように第１及び第２のリード挟持部分１９，２０の相互間隔をリード６の径よりも僅かに狭くすることもできる。筒状の口金本体１２の径方向即ちリード６の径方向における第１及び第２のリード挟持部分１９，２０の幅は、これ等の塑性変形を容易にするために中間部分２１の径方向の幅よりも狭い。第１及び第２のリード挟持部分１９，２０は、これ等の少なくとも一部の塑性変形によってリード６を挟持し、リード６との電気的及び機械的結合を成立させることができるように形成されている。即ち、第１及び第２のリード挟持部分１９，２０は、ガラス管４に口金本体１１が装着された後に、周知のカシメ工程によって図５に示すように互いに接近する方向に塑性変形することができるように形成されている。これにより、リード６は変形された第１及び第２のリード挟持部分１９´，２０´によって挟持され、これらの電気的及び機械的結合が成立する。 The lead connecting portion 13 is formed integrally with the base body 12 and the connecting portion 14, and can be called a pair of projecting pieces, a pair of plate-like bodies, or a pair of opposing portions, and a first lead holding portion and a second lead holding portion. 19 and 20 and an intermediate portion 21 which can also be referred to as an interconnecting portion thereof. In the first embodiment and each of the embodiments described later, first and second lead clamping portions 19, 19a, 19b and 20, 20a, 20b as first and second portions and intermediate portions 21, 21a, respectively. The boundary is indicated by a chain line 100. The boundary indicated by the chain line 100 can be moved to the distal end side of the first and second lead clamping portions 19, 19a, 19b and 20, 20a, 20b or to the openings 22 and 22a side of the intermediate portions 21 and 21a. it can. Further, the bent portions in the intermediate portions 21 and 21a for forming the first and second lead clamping portions 19, 19a and 19b and 20, 20a and 20b are made to coincide with the left and right ends of the openings 22 and 22a in FIG. Or the inner side of the base body 12 in the radial direction from the left and right ends of the openings 22 and 22a.
The first and second lead sandwiching portions 19 and 20 are disposed so as to face each other so that the lead 6 can be interposed therebetween, and extend in a direction away from the connecting portion 14 along the lead 6. Is formed so that it can be held at least partially. As shown in FIG. 11, the interval W1 between the first and second lead clamping portions 19 and 20 before the base body 11 is mounted on the glass tube 4 is slightly wider than the diameter of the lead 6, for example 1.2 mm. Is set to As will become apparent from the description below, the distance between the first and second lead clamping portions 19 and 20 can be made slightly narrower than the diameter of the lead 6. The widths of the first and second lead clamping portions 19 and 20 in the radial direction of the cylindrical base body 12, that is, in the radial direction of the lead 6 are set in the radial direction of the intermediate portion 21 in order to facilitate these plastic deformations. Narrower than width. The first and second lead clamping portions 19 and 20 are formed so as to hold the lead 6 by at least some of these plastic deformations and establish electrical and mechanical coupling with the lead 6. ing. That is, the first and second lead clamping portions 19 and 20 may be plastically deformed in a direction approaching each other as shown in FIG. 5 by a known caulking process after the base body 11 is mounted on the glass tube 4. It is formed to be able to. As a result, the lead 6 is sandwiched by the deformed first and second lead sandwiching portions 19 ′ and 20 ′, and the electrical and mechanical coupling is established.

中間部分２１は、第１及び第２のリード挟持部分１９，２０を相互に連結しており、且つガラス管４に口金本体１２が装着された時にガラス管４の端面１８に対向するように形成され、且つリード６を挿通させるための貫通孔から成る開口２２を有し、且つ連結部１４に結合されている。図４から明らかなように、口金本体１２の径方向において、中間部分２１の開口２２の下側部分の幅は、連結部１４の幅よりも広い。こうすることで、連結部１４とリード接続部１３との機械的結合（保持）を良好にすることができる。
第１及び第２のリード挟持部分１９，２０の口金本体１２側の端に中間部分２１が連結されているので、図３及び図９から明らかなようにリード接続部１３はほぼＵ字状平面形状を有する。中間部分２１の開口２２はリード６の位置決め又は位置制限機能を有する。なお、この実施例では中間部分２１の開口２２を有する部分が平坦に形成されているが、この部分も円弧状に湾曲させることができる。 The intermediate portion 21 connects the first and second lead clamping portions 19 and 20 to each other, and is formed so as to face the end surface 18 of the glass tube 4 when the base body 12 is mounted on the glass tube 4. And has an opening 22 formed of a through-hole for inserting the lead 6, and is coupled to the connecting portion 14. As apparent from FIG. 4, the width of the lower portion of the opening 22 of the intermediate portion 21 is wider than the width of the connecting portion 14 in the radial direction of the base body 12. By doing so, the mechanical coupling (holding) between the connecting portion 14 and the lead connecting portion 13 can be improved.
Since the intermediate portion 21 is coupled to the ends of the first and second lead clamping portions 19 and 20 on the base body 12 side, the lead connecting portion 13 is substantially U-shaped as is apparent from FIGS. Has a shape. The opening 22 of the intermediate portion 21 has a function of positioning or position limiting the lead 6. In this embodiment, the portion having the opening 22 of the intermediate portion 21 is formed flat, but this portion can also be curved in an arc shape.

口金１１を製造する時には、金属板を用意し、これに周知のプレス加工を施す。このプレス加工時に突起１７を同時に形成する。しかる後、またリード接続部１３及び連結部１４を形成し、また金属板を円筒状に成形して口金本体１１を形成する。 When manufacturing the base 11, a metal plate is prepared and subjected to a well-known press process. The protrusions 17 are simultaneously formed during this pressing. Thereafter, the lead connecting portion 13 and the connecting portion 14 are formed again, and the base body 11 is formed by forming a metal plate into a cylindrical shape.

図２〜図７に示す口金付き放電灯１０を製造する時には、口金本体１２を固定して口金本体１２のリード接続部１３が配置されている側と反対の端面２４側から放電管１を口金本体１２の中に挿入する。又は、放電管１を固定して放電管１の例えばリード６側からガラス管４側に口金本体１２を移動して口金本体１２をガラス管４に嵌合させる。又は、放電管１と口金本体１２との両方を互いに接近する方向に移動して口金本体１２をガラス管４に嵌合させる。既に説明したように口金１１の装着前において、口金本体１２に形成された３個の突起１７の内接円の直径はガラス管４の外周の直径よりも小さいので、口金１１をガラス管４に装着すると、口金本体１２がその直径は大きくなる方向に弾性変形し、３個の突起１７がガラス管４に弾性を有して接触し、口金本体１２とガラス管４との嵌合が成立する。 2 to 7, when the discharge lamp 10 with the cap is manufactured, the discharge tube 1 is connected to the cap 1 from the end surface 24 side opposite to the side where the lead connecting portion 13 of the cap body 12 is fixed. Insert into the body 12. Alternatively, the discharge tube 1 is fixed and the base body 12 is moved from the lead 6 side to the glass tube 4 side of the discharge tube 1 to fit the base body 12 to the glass tube 4. Alternatively, both the discharge tube 1 and the base body 12 are moved toward each other to fit the base body 12 to the glass tube 4. As described above, the diameter of the inscribed circle of the three protrusions 17 formed on the base body 12 is smaller than the diameter of the outer periphery of the glass tube 4 before the base 11 is mounted. When attached, the base body 12 is elastically deformed in the direction in which the diameter increases, and the three protrusions 17 elastically contact the glass tube 4, and the base body 12 and the glass tube 4 are fitted. .

口金本体１２をガラス管４に装着すると、放電管１のリード６はリード接続部１３の中間部分２１の開口２２を介して第１及び第２のリード挟持部分１９，２０の間に配置される。次に、図示されていないカシメ工具によって第１及び第２のリード挟持部分１９，２０の少なくとも一部を塑性変形し、変形された第１及び第２のリード挟持部分１９´，２０´によってリード６を挟持して、これ等の電気的且つ機械的結合を成立させる。しかる後、レーザーをリード接続部１３´の変形された第１及び第２のリード挟持部分１９´，２０´に照射して変形された第１及び第２のリード挟持部分１９´，２０´とリード６との電気的且つ機械的結合を更に安定化させる。なお、必要に応じてリード接続部１３´の少なくとも一部とリード６とを半田で結合することもできる。 When the base body 12 is attached to the glass tube 4, the lead 6 of the discharge tube 1 is disposed between the first and second lead sandwiching portions 19 and 20 through the opening 22 of the intermediate portion 21 of the lead connecting portion 13. . Next, at least a part of the first and second lead clamping portions 19 and 20 is plastically deformed by a caulking tool (not shown), and the leads are deformed by the deformed first and second lead clamping portions 19 ′ and 20 ′. These 6 are clamped to establish these electrical and mechanical couplings. Thereafter, the deformed first and second lead sandwiching portions 19 ′, 20 ′ are irradiated with laser to the deformed first and second lead sandwiching portions 19 ′, 20 ′. It further stabilizes the electrical and mechanical coupling with the lead 6. If necessary, at least a part of the lead connecting portion 13 ′ and the lead 6 can be joined with solder.

図２〜図７に示す口金付き放電灯１０は例えば図１３に示す液晶表示装置のバックライト光源装置３０として使用される。光源装置３０は、複数の放電灯１０を並置することにより構成された面光源である。各放電灯１０の両端の口金１１はそれぞれの金属性ホルダーと呼ぶこともできるコネクタ３１に保持されている。各コネクタ３１は、共通の固定基板３２に固着されており、図１４に示すように口金１１を弾性的に保持するための対の金属製バネ片３３，３４を有する。各コネクタ３１は図示されていない電源に接続されているので、コネクタ３１に対して放電灯１０の口金１１の外周面を接触させると、放電灯１０のリード６、７間に電圧が印加され、放電灯１０が点灯する。 2 to 7 is used as a backlight light source device 30 of a liquid crystal display device shown in FIG. 13, for example. The light source device 30 is a surface light source configured by juxtaposing a plurality of discharge lamps 10. The caps 11 at both ends of each discharge lamp 10 are held by connectors 31 that can be called metal holders. Each connector 31 is fixed to a common fixed substrate 32, and has a pair of metal spring pieces 33 and 34 for elastically holding the base 11 as shown in FIG. Since each connector 31 is connected to a power source (not shown), when the outer peripheral surface of the base 11 of the discharge lamp 10 is brought into contact with the connector 31, a voltage is applied between the leads 6 and 7 of the discharge lamp 10, The discharge lamp 10 is turned on.

本実施例は次の効果を有する。
（１）口金１１のリード接続部１３は、放電管１に口金本体１２が装着された時に相互間にリード６を介在させることができるように互いに対向配置され且つ筒状の口金本体１２の軸方向に延びていている第１及び第２のリード挟持部分１９，２０と、第１及び第２のリード挟持部分１９，２０を相互に連結しており且つガラス管４の端面１８に対向するように形成され且つリードを挿通させるための開口２を有している中間部分２１とから成る。例えば、リード接続部１３は、特許文献１に開示されているリード挿通孔又は溝を有しているリード接続部に対して第１及び第２のリード挟持部分１９，２０を付加した構成に相当する。本発明に従う第１及び第２のリード挟持部分１９，２０はリード６を挟み込むように容易に塑性変形（カシメによる変形）させることができる。これにより、リード６とリード接続部１３との電気的及び機械的結合の信頼性が特許文献１よりも高くなる。
（２）第１及び第２のリード挟持部分１９，２０は、中間部分２１からリード６の延びる方向に導出されている。従って、リード６の延びる方向において第１及び第２のリード挟持部分１９，２０は中間部分２１で連結されていない。このため、第１及び第２のリード挟持部分１９，２０をリード６に接続させるように塑性変形させる時に、この塑性変形を中間部分２１の干渉の少ない状態で達成することができる。
（３）第１及び第２のリード挟持部分１９，２０は放電管１で発生した熱の放熱体として機能する。これにより、特許文献１よりも放熱性の良い放電灯又は光源装置を提供することができる。
（４）リード接続部１３と口金本体１２との間の連結部１４が口金本体１２からほぼ垂直に立ち上がっているので、連結部１４に妨害されずにガラス管４の端部１８をリード接続部１３に接近させることが可能になる。これにより、口金１１を装着した放電灯１０の軸方向の長さを短くすることができる。
（５）リード接続部１３と口金本体１２との間の連結部１４は弾性変形可能な帯状であるので、放電灯１０に口金１１を装着する時に連結部１４に直接又は間接にストレスが加わった時の連結部１４の破損を防ぐことができ、且つ連結部１４からガラス管４にストレスが波及することを防ぐことができる。
（６）口金本体１２はこの内側に突起１７を有し、且つ弾性変形可能であるので、ガラス管４に容易且つ良好に嵌合することができ、且つ口金本体１２とガラス管４との間に断熱作用を有する所望の空間を設けることができる。
（７）第１及び第２のリード挟持部分１９，２０は連結部１４から遠ざかる方向に延びているので、第１及び第２のリード挟持部分１９，２０をカシメ加工する際、ガラス管４に傷等を生じさせることなく、ガラス管４とリード接続部１３とをできる限り接近させることができる。 This embodiment has the following effects.
(1) The lead connecting portions 13 of the base 11 are arranged opposite to each other so that the leads 6 can be interposed between the main bodies 12 when the base body 12 is mounted on the discharge tube 1, and the axis of the cylindrical base body 12. The first and second lead clamping portions 19 and 20 extending in the direction and the first and second lead clamping portions 19 and 20 are connected to each other and face the end face 18 of the glass tube 4. And an intermediate portion 21 having an opening 2 for inserting a lead. For example, the lead connection portion 13 corresponds to a configuration in which first and second lead clamping portions 19 and 20 are added to the lead connection portion having a lead insertion hole or groove disclosed in Patent Document 1. To do. The first and second lead clamping portions 19 and 20 according to the present invention can be easily plastically deformed (deformed by caulking) so as to sandwich the lead 6. As a result, the reliability of electrical and mechanical coupling between the lead 6 and the lead connecting portion 13 is higher than that of Patent Document 1.
(2) The first and second lead clamping portions 19 and 20 are led out from the intermediate portion 21 in the direction in which the leads 6 extend. Accordingly, the first and second lead clamping portions 19 and 20 are not connected by the intermediate portion 21 in the extending direction of the lead 6. For this reason, when the first and second lead clamping portions 19 and 20 are plastically deformed so as to be connected to the lead 6, this plastic deformation can be achieved in a state in which the intermediate portion 21 has little interference.
(3) The first and second lead clamping portions 19 and 20 function as a radiator for the heat generated in the discharge tube 1. Thereby, the discharge lamp or light source device whose heat dissipation is better than patent document 1 can be provided.
(4) Since the connecting portion 14 between the lead connecting portion 13 and the base body 12 rises substantially vertically from the base body 12, the end portion 18 of the glass tube 4 is connected to the lead connecting portion without being obstructed by the connecting portion 14. 13 can be approached. Thereby, the length of the axial direction of the discharge lamp 10 which mounted | wore with the nozzle | cap | die 11 can be shortened.
(5) Since the connecting portion 14 between the lead connecting portion 13 and the base body 12 has a belt shape that can be elastically deformed, stress is applied to the connecting portion 14 directly or indirectly when the base 11 is attached to the discharge lamp 10. It is possible to prevent breakage of the connecting portion 14 at the time, and to prevent stress from spreading from the connecting portion 14 to the glass tube 4.
(6) Since the base body 12 has a protrusion 17 on the inner side and can be elastically deformed, it can be easily and satisfactorily fitted to the glass tube 4 and between the base body 12 and the glass tube 4. It is possible to provide a desired space having a heat insulating function.
(7) Since the first and second lead clamping portions 19 and 20 extend in the direction away from the connecting portion 14, when the first and second lead clamping portions 19 and 20 are caulked, The glass tube 4 and the lead connecting portion 13 can be brought as close as possible without causing scratches or the like.

次に実施例２に従う放電灯の口金１１ａを、図１５を参照して説明する。但し、図１５において、実施例１を示す図１〜図１４と実質的に同一の部分には同一の参照符号を付してその説明を省略する。また、実施例２及び後述する別の実施例の説明において必要に応じて図１〜図１４を参照する。図１５に示されている実施例２に従う口金１１ａは、変形された連結部１４ａを除いて実施例１の口金１１と同一に構成されている。変形された連結部１４ａは、口金本体１２の軸方向に対して傾いている傾斜部分４０ａを有する。即ち、連結部１４ａは口金本体１２の軸方向に対して平行に導出された部分４０ｂと傾斜部分４０ａと軸方向に対して垂直な部分４０ｃとから成る。傾斜部分４０ａは口金本体１２の軸方向と径方向との両方に弾性変位可能である。従って、図１５に示されている実施例２に従う変形された連結部１４ａは、リード接続部１３と口金本体１２との間の緩衝機能が実施例１の連結部１４よりも大きい。
なお、傾斜部分４０ａと垂直な部分４０ｃとの間、又は垂直な部分４０ｃと中間部分２１との間に軸方向に対して平行な部分を追加して設けることもできる。また、平行に導出された部分４０ｂと垂直な部分４０ｃとのいずれか一方又は両方を省くこともできる。要するに、連結部１４、１４ａは弾性変形する種々の形状に変形可能である。 Next, the base 11a of the discharge lamp according to the second embodiment will be described with reference to FIG. However, in FIG. 15, parts that are substantially the same as those in FIGS. 1 to 14 showing the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Moreover, FIGS. 1-14 is referred as needed in description of Example 2 and another Example mentioned later. The base 11a according to the second embodiment shown in FIG. 15 has the same configuration as the base 11 of the first embodiment except for the deformed connecting portion 14a. The deformed connecting portion 14 a has an inclined portion 40 a that is inclined with respect to the axial direction of the base body 12. That is, the connecting portion 14a includes a portion 40b led out in parallel to the axial direction of the base body 12, an inclined portion 40a, and a portion 40c perpendicular to the axial direction. The inclined portion 40a can be elastically displaced in both the axial direction and the radial direction of the base body 12. Accordingly, the deformed connecting portion 14a according to the second embodiment shown in FIG. 15 has a larger buffering function between the lead connecting portion 13 and the base body 12 than the connecting portion 14 of the first embodiment.
In addition, a portion parallel to the axial direction may be additionally provided between the inclined portion 40a and the vertical portion 40c, or between the vertical portion 40c and the intermediate portion 21. Moreover, it is also possible to omit either one or both of the portion 40b derived in parallel and the vertical portion 40c. In short, the connecting portions 14 and 14a can be deformed into various shapes that are elastically deformed.

次に実施例３に従う口金の変形されたリード接続部１３ａを、図１６を参照して説明する。図１６のリード接続部１３ａは、中間部分２１と変形された第１のリード挟持部分１９ａとの境界に対の溝４１を有し、中間部分２１と変形された第２のリード挟持部分２０ａとの境界に対の溝４２を有する。第１のリード挟持部分１９ａは対の溝４１の間の残存部分で中間部分２１に連結され、第２のリード挟持部分２０ａは対の溝４２の間の残存部分で中間部分２１に連結されている。従って、口金本体１２の径方向における第１及び第２のリード挟持部分１９ａ、２０ａの幅が実施例１の第１及び第２のリード挟持部分１９、２０の幅よりも広いにも拘らずこの第１及び第２のリード挟持部分１９ａ、２０ａの塑性変形によってリード６を容易且つ良好に挟持することができる。リード６の軸方向における第１及び第２のリード挟持部分１９ａ、２０ａの大部分又は全部でリード６を挟持することが可能になり、第１及び第２のリード挟持部分１９ａ、２０ａとリード６との強固な電気的及び機械的結合が得られる。またリード接続部１３ａとリード６との溶接を良好に達成することができる。
なお、２つの対の溝４１、４２を第１及び第２のリード挟持部分１９ａ、２０ａの中又は中間部分２１の中に設けることができる。また、口金本体１２の径方向における第１及び第２のリード挟持部分１９ａ、２０ａの幅を実施例１の第１及び第２のリード挟持部分１９、２０と同様に中間部分２１よりも狭くすることができる。また、対の溝４１、４２の上又は下を省いて第１及び第２のリード挟持部分１９ａ、２０ａにそれぞれ１つの溝を設けることができる。また、図１６の連結部１４を、図１５の連結部１４ａ又はこれに類似の別の形状にすることができる。 Next, the deformed lead connecting portion 13a of the base according to the third embodiment will be described with reference to FIG. 16 has a pair of grooves 41 at the boundary between the intermediate portion 21 and the deformed first lead holding portion 19a, and the intermediate portion 21 and the deformed second lead holding portion 20a. A pair of grooves 42 is provided at the boundary between the two. The first lead holding portion 19a is connected to the intermediate portion 21 at the remaining portion between the pair of grooves 41, and the second lead holding portion 20a is connected to the intermediate portion 21 at the remaining portion between the pair of grooves 42. Yes. Therefore, although the width of the first and second lead clamping portions 19a and 20a in the radial direction of the base body 12 is wider than the width of the first and second lead clamping portions 19 and 20 of the first embodiment, The lead 6 can be easily and satisfactorily clamped by plastic deformation of the first and second lead clamping portions 19a and 20a. The lead 6 can be clamped by most or all of the first and second lead clamping portions 19a, 20a in the axial direction of the lead 6, and the first and second lead clamping portions 19a, 20a and the lead 6 can be clamped. And a strong electrical and mechanical connection. Further, the welding of the lead connecting portion 13a and the lead 6 can be achieved satisfactorily.
Two pairs of grooves 41, 42 can be provided in the first and second lead clamping portions 19 a, 20 a or in the intermediate portion 21. Further, the widths of the first and second lead clamping portions 19a and 20a in the radial direction of the base body 12 are made narrower than the intermediate portion 21 in the same manner as the first and second lead clamping portions 19 and 20 of the first embodiment. be able to. In addition, one groove can be provided in each of the first and second lead clamping portions 19a and 20a, omitting the top or bottom of the pair of grooves 41 and 42. Moreover, the connection part 14 of FIG. 16 can be made into the connection part 14a of FIG. 15, or another shape similar to this.

次に実施例４に従う放電灯１０ａを、図１７及び図１８を参照して説明する。図１７の放電灯１０ａは変形された口金１１ａを有する他は実施例１に従う放電灯１０と同一に構成されている。また、図１７の口金１１ａは変形されたリード接続部１３ｂを有する他は実施例１に従う口金１１と同一に構成されている。図１７及び図１８に示す変形されたリード接続部１３ｂは、変形された第１及び第２のリード挟持部分１９ｂ，２０ｂを有する他は実施例１に従うリード接続部１３と同一に構成されている。図１７及び図１８に示す変形された第１及び第２のリード挟持部分１９ｂ，２０ｂは、リード６を弾性的に挟持する突出部５１，５２をそれぞれ有する。リード６をリード接続部１３ｂに挿入する前において、対の突出部５１，５２の相互間隔Ｗ２はリード６の径よりも少し狭く設定されている。なお、図１７から明らかなように対の突出部５１，５２は平面的に見て円弧状に形成されている。リード６を中間部分２１の開口２２を介して第１及び第２のリード挟持部分１９ｂ，２０ｂの間に挿入すると、第１及び第２のリード挟持部分１９ｂ，２０ｂは相互間隔が広がる方向に弾性変形し、バネ作用を有してリード６を図１７に示すように挟持し、リード６と第１及び第２のリード挟持部分１９ｂ，２０ｂとの電気的及び機械的結合が成立する。更に、第１及び第２のリード挟持部分１９ｂ，２０ｂの突出部５１，５２をレーザーで溶接すると、リード６と第１及び第２のリード挟持部分１９ｂ，２０ｂとの電気的及び機械的結合がより強固になる。
なお、実施例４は実施例１と同一の効果も有する。
また、必要に応じて、実施例４のリード６と第１及び第２のリード挟持部分１９ｂ，２０ｂを実施例１と同様にカシメによって塑性変形することもできる。また、実施例４の第１及び第２のリード挟持部分１９ｂ，２０ｂに図１６の溝４１，４２と同様なものを設けることができる。また、実施例４の連結部１４を図１５の傾斜を有する連結部１４ａに変形することができる。また、突出部５１，５２と同様なものをリード６の延びる方向に複数個設けることができる。また、突出部５１，５２を第１及び第２のリード挟持部分１９ｂ，２０ｂの先端に移動することができる。また、突出部５１，５２の代りに第１及び第２のリード挟持部分１９ｂ，２０ｂの先端部分を互いに近づくように変形し、且つ先端部分にバネ作用を付与し、先端部分の相互間隔をリード６の径よりも少し狭く設定し、先端部分の相互間隔に挿入されたリード６を第１及び第２のリード挟持部分の先端部分で挟持することができる。 Next, a discharge lamp 10a according to the fourth embodiment will be described with reference to FIGS. The discharge lamp 10a of FIG. 17 is configured in the same manner as the discharge lamp 10 according to the first embodiment except that it has a deformed base 11a. Also, the base 11a of FIG. 17 has the same configuration as the base 11 according to the first embodiment except that the lead connection portion 13b is modified. The deformed lead connecting portion 13b shown in FIGS. 17 and 18 has the same configuration as the lead connecting portion 13 according to the first embodiment except that the deformed first and second lead holding portions 19b and 20b are provided. . The deformed first and second lead holding portions 19b and 20b shown in FIGS. 17 and 18 have protrusions 51 and 52 that elastically hold the lead 6, respectively. Before the lead 6 is inserted into the lead connecting portion 13b, the mutual interval W2 between the pair of projecting portions 51 and 52 is set slightly smaller than the diameter of the lead 6. As is apparent from FIG. 17, the pair of projecting portions 51 and 52 are formed in an arc shape when seen in a plan view. When the lead 6 is inserted between the first and second lead sandwiching portions 19b and 20b through the opening 22 of the intermediate portion 21, the first and second lead sandwiching portions 19b and 20b are elastic in the direction in which the mutual interval increases. The lead 6 is deformed and has a spring action so that the lead 6 is clamped as shown in FIG. 17, and electrical and mechanical coupling between the lead 6 and the first and second lead clamping portions 19b and 20b is established. Furthermore, when the projecting portions 51 and 52 of the first and second lead holding portions 19b and 20b are welded by laser, electrical and mechanical coupling between the lead 6 and the first and second lead holding portions 19b and 20b is achieved. Become stronger.
The fourth embodiment has the same effect as the first embodiment.
If necessary, the lead 6 of the fourth embodiment and the first and second lead clamping portions 19b and 20b can be plastically deformed by caulking as in the first embodiment. Further, the first and second lead holding portions 19b and 20b of the fourth embodiment can be provided with the same as the grooves 41 and 42 of FIG. Moreover, the connection part 14 of Example 4 can be deform | transformed into the connection part 14a which has the inclination of FIG. Further, a plurality of protrusions 51 and 52 can be provided in the direction in which the leads 6 extend. Further, the protruding portions 51 and 52 can be moved to the tips of the first and second lead clamping portions 19b and 20b. In addition, instead of the protrusions 51 and 52, the tip portions of the first and second lead clamping portions 19b and 20b are deformed so as to approach each other, and a spring action is applied to the tip portions so that the distance between the tip portions is read. The leads 6 set to be slightly narrower than the diameter of 6 and inserted at the interval between the tip portions can be clamped by the tip portions of the first and second lead clamping portions.

次に実施例５に従う放電灯１０ｂを、図１９及び図２０を参照して説明する。図１９の放電灯１０ｂは変形された口金１１ｂを有する他は実施例１に従う放電灯１０と同一に構成されている。また、図１９の口金１１ｂは変形されたリード接続部１３ｃを有する他は実施例１に従う口金１１と同一に構成されている。また、図１９及び図２０に示す変形されたリード接続部１３ｃは、変形された中間部分２１ａと開口２１ａを有する他は実施例１に従うリード接続部１３と同一に構成されている。図１９及び図２０に示す変形された中間部分２１ａの開口２１ａはＵ字状の溝から成る。実施例１の孔から成る開口２１を図１９及び図２０に示すＵ字状の溝から成る開口２１ａに変形しても実施例１と同一の効果を得ることができる。
なお、図１９及び図２０において、連結部１４を図１５の連結部１４ａに変形すること、リード接続部１３ｃに図１６と同様な溝４１，４２を設けること、第１及び第２のリード挟持部分１９，２０を図１７及び図１８に示す第１及び第２のリード挟持部分１９ｂ，２０ｂに変形することが可能である。 Next, a discharge lamp 10b according to the fifth embodiment will be described with reference to FIGS. The discharge lamp 10b shown in FIG. 19 has the same configuration as the discharge lamp 10 according to the first embodiment except that it has a deformed base 11b. Further, the base 11b in FIG. 19 has the same configuration as the base 11 according to the first embodiment except that the lead connection portion 13c is modified. 19 and 20 is the same as the lead connection portion 13 according to the first embodiment except that it has a deformed intermediate portion 21a and an opening 21a. The opening 21a of the deformed intermediate portion 21a shown in FIGS. 19 and 20 is formed of a U-shaped groove. The same effect as that of the first embodiment can be obtained even if the opening 21 made of the hole of the first embodiment is transformed into the opening 21a made of a U-shaped groove shown in FIGS.
19 and 20, the connecting portion 14 is transformed into the connecting portion 14a in FIG. 15, the grooves 41 and 42 similar to those in FIG. 16 are provided in the lead connecting portion 13c, and the first and second leads are clamped. The portions 19 and 20 can be transformed into first and second lead clamping portions 19b and 20b shown in FIGS.

図２１に実施例６に従う放電灯１０ｃの一部が示されている。図２１の放電灯１０ｃは、変形された口金１１ｃを有する他は実施例１に従う放電灯１０と同一に構成されている。また、図２１の口金１１ｃは図７等に示す３個の突起１７の代りに複数個の弾性保持片１７ａを有する口金本体１２ａを設けた他は実施例１に従う口金１１と同一に構成されている。図２１の弾性保持片１７ａは円筒状の口金本体１２ａの内側に突出した先端を有するバネ片であり、ガラス管４の外周面に当接してガラス管４を保持し、図７等に示す突起１７と同様に機能する。なお、口金本体１２ａの周方向に図７等に示す突起１７と図２１の弾性保持片１７ａとの両方を配置することができる。また、弾性保持片１７ａをこれと等価な機能を有する種々の形状の弾性保持片に変形することができる。 FIG. 21 shows a part of a discharge lamp 10c according to the sixth embodiment. The discharge lamp 10c of FIG. 21 is configured in the same manner as the discharge lamp 10 according to the first embodiment, except that it has a deformed base 11c. 21 is the same as the base 11 according to the first embodiment except that a base body 12a having a plurality of elastic holding pieces 17a is provided instead of the three protrusions 17 shown in FIG. Yes. The elastic holding piece 17a in FIG. 21 is a spring piece having a tip protruding inward of the cylindrical base body 12a. The elastic holding piece 17a is in contact with the outer peripheral surface of the glass tube 4 to hold the glass tube 4, and the protrusion shown in FIG. Functions in the same way as 17. In addition, both the protrusion 17 shown in FIG. 7 etc. and the elastic holding piece 17a of FIG. 21 can be arrange | positioned in the circumferential direction of the nozzle | cap | die main body 12a. Further, the elastic holding piece 17a can be transformed into various shapes of elastic holding pieces having functions equivalent to this.

図２２に実施例７に従う放電灯１０ｄの断面が示されている。図２２の放電灯１０ｄは、変形された口金１１ｄを有する他は実施例１に従う放電灯１０と同一に構成されている。また、図２２の口金１１ｄは変形されたスリット１６ａを有する口金本体１２ｂを設けた他は実施例１に従う口金１１と同一に構成されている。変形された口金本体１２ｂは、スリット１６ａを介して対向している端部６１，６２が口金本体１２ｂの内側に少し曲げられている点で実施例１の口金本体１２と相違し、この他は実施例１の口金本体１２と同一に構成されている。口金本体１２ｂを図２２に示すように構成すると、口金本体１２ｂのスリット１６ａに隣接する部分にプレス加工時に起因してバリ即ち微小突起が生じていても、バリが口金本体１２ｂの外接円から外に出なくなり、口金１０ｄのガラス管４に対する装着時又は図１４のコネクタ３１に対する放電灯１０ｄの装着時にバリ即ち微小突起による妨害を受けなくなる。
なお、実施例１以外の実施例においても図２２の口金本体１２ｂと同様なものを設けることができる。 FIG. 22 shows a cross section of a discharge lamp 10d according to the seventh embodiment. The discharge lamp 10d of FIG. 22 is configured in the same manner as the discharge lamp 10 according to the first embodiment except that it has a deformed base 11d. The base 11d shown in FIG. 22 has the same configuration as the base 11 according to the first embodiment except that a base body 12b having a deformed slit 16a is provided. The deformed base body 12b is different from the base body 12 of the first embodiment in that the end portions 61 and 62 facing each other through the slit 16a are slightly bent inside the base body 12b. This is the same as the base body 12 of the first embodiment. When the base body 12b is configured as shown in FIG. 22, even if burrs, that is, minute protrusions are generated in the portion adjacent to the slit 16a of the base body 12b due to pressing, the burrs are removed from the circumscribed circle of the base body 12b. 14 and when the discharge lamp 10d is attached to the connector 31 shown in FIG.
Note that in embodiments other than the first embodiment, the same one as the base body 12b of FIG. 22 can be provided.

図２３に実施例８に従う放電灯１０ｅの断面が示されている。図２３の放電灯１０ｅは、変形された口金１１ｅを有する他は実施例１に従う放電灯１０と同一に構成されている。また、図２３の口金１１ｅは変形された口金本体１２ｃを設けた他は実施例１に従う口金１１と同一に構成されている。図２３の口金本体１２ｃは、実施例１の口金本体１２におけるスリット１６を有さない他は実施例１の口金本体１２と同一に構成されている。従って、図２３の口金本体１２ｃはスリット無しの円筒体である。口金本体１２ｃにスリットがなくとも突起１７を変形可能に構成することにより、口金本体１２ｃをガラス管４に嵌合させることができる。
なお、突起１７の代りに図２１の弾性保持片１７ａを設けることができる。 FIG. 23 shows a cross section of a discharge lamp 10e according to the eighth embodiment. The discharge lamp 10e of FIG. 23 is configured in the same manner as the discharge lamp 10 according to the first embodiment except that it has a deformed base 11e. The base 11e shown in FIG. 23 is configured in the same manner as the base 11 according to the first embodiment, except that the base body 12c is modified. The base body 12c of FIG. 23 is configured the same as the base body 12 of the first embodiment, except that the slit body 16 in the base body 12 of the first embodiment is not provided. Accordingly, the base body 12c of FIG. 23 is a cylindrical body without a slit. The base body 12c can be fitted to the glass tube 4 by configuring the protrusion 17 so that the base body 12c can be deformed without a slit.
Note that the elastic holding piece 17a shown in FIG.

本発明は、上述の実施例に限定されるものでなく、例えば、次の変形が可能なものである。
（１）図１に示す口金無し冷陰極蛍光放電管１以外のこれに類似した形状を有する別の放電管にも本発明の口金を適用することができる。
（２）ガラス管４又はこの端部を円筒形以外の別な形状、例えば断面形状４角形等の筒状に変形することができる。
（３）リード６の断面形状は円形でなくとも良い。また、リード接続部１３と対向するリード６の一部を潰して楕円体又は平坦化した板状体等にすることができる。これにより、リード接続部１３とリード６とを接続するためのカシメ加工、溶接、半田付けの少なくとも１つを良好に行うことができる。この場合、リード６の平坦面を第１及び第２のリード挟持部分１９，１９ａ，１９ｂ、２０，２０ａ、２０ｂの平坦面に対向させることが望ましい。
（４）各実施例において、第１及び第２のリード挟持部分１９，１９ａ，１９ｂ、２０，２０ａ、２０ｂとリード６との電気的且つ機械的結合を、第１及び第２のリード挟持部分１９，１９ａ，１９ｂ、２０，２０ａ、２０ｂによるリード６の挟持のみで行っても良いし、更に、溶接と半田付けとのいずれか一方又は両方を伴って行っても良い。
（５）第１及び第２のリード挟持部分１９，１９ａ，１９ｂ、２０，２０ａ、２０ｂとリード６とをレーザー溶接以外のスポット溶接等で行うことができる。 The present invention is not limited to the above-described embodiments, and for example, the following modifications are possible.
(1) The base of the present invention can be applied to another discharge tube having a shape similar to this other than the baseless cold cathode fluorescent discharge tube 1 shown in FIG.
(2) The glass tube 4 or its end can be transformed into another shape other than a cylindrical shape, for example, a cylindrical shape such as a quadrangular cross-sectional shape.
(3) The cross-sectional shape of the lead 6 may not be circular. In addition, a part of the lead 6 facing the lead connection portion 13 can be crushed into an ellipsoid or a flat plate. Thereby, at least one of caulking, welding, and soldering for connecting the lead connecting portion 13 and the lead 6 can be satisfactorily performed. In this case, it is desirable that the flat surface of the lead 6 be opposed to the flat surfaces of the first and second lead clamping portions 19, 19a, 19b, 20, 20a, and 20b.
(4) In each embodiment, the first and second lead clamping portions are electrically and mechanically coupled to the lead 6 and the first and second lead clamping portions 19, 19a, 19b, 20, 20a, 20b. 19, 19 a, 19 b, 20, 20 a, 20 b may be performed only by holding the lead 6, and further, it may be performed with either or both of welding and soldering.
(5) The first and second lead clamping portions 19, 19a, 19b, 20, 20a, 20b and the lead 6 can be performed by spot welding or the like other than laser welding.

各実施例において使用する口金無し放電管を示す断面図である。It is sectional drawing which shows the nozzleless discharge tube used in each Example. 本発明の実施例１に従う放電灯の一部を示す正面図である。It is a front view which shows a part of discharge lamp according to Example 1 of this invention. 図２の放電灯を、リード接続部を塑性変形する前の状態で示す平面図である。It is a top view which shows the discharge lamp of FIG. 2 in the state before carrying out plastic deformation of the lead connection part. 図２の放電灯を、リード接続部を塑性変形する前の状態で示す左側面図である。FIG. 3 is a left side view showing the discharge lamp of FIG. 2 in a state before plastic deformation of a lead connecting portion. 図２の放電灯を、リード接続部を塑性変形した後の状態で示す左側面図である。FIG. 3 is a left side view showing the discharge lamp of FIG. 2 in a state after a lead connecting portion is plastically deformed. 図３の放電灯のＡ−Ａ線断面図である。It is the sectional view on the AA line of the discharge lamp of FIG. 図３の放電灯のB−B線断面図である。It is a BB sectional view of the discharge lamp of FIG. 図２の放電灯の口金のみを示す正面図である。It is a front view which shows only the nozzle | cap | die of the discharge lamp of FIG. 図８の口金を示す平面図である。It is a top view which shows the nozzle | cap | die of FIG. 図９の口金のC−C線断面図である。It is CC sectional view taken on the line of the nozzle | cap | die of FIG. 図９のリード接続部のD-D線断面図である。FIG. 10 is a sectional view taken along line DD of the lead connection portion of FIG. 9. 図８の口金のリード接続部及び連結部を示す拡大斜視図である。It is an expansion perspective view which shows the lead connection part and connection part of a nozzle | cap | die of FIG. 実施例１に従う光源装置を概略的に示す平面図である。1 is a plan view schematically showing a light source device according to Embodiment 1. FIG. 図１３の光源装置の一部を拡大して示す断面図である。It is sectional drawing which expands and shows a part of light source device of FIG. 実施例２に従う口金を示す正面図である。6 is a front view showing a base according to Embodiment 2. FIG. 実施例３に従う口金のリード接続部及び連結部を示す拡大斜視図である。It is an expansion perspective view which shows the lead connection part and connection part of a nozzle | cap | die according to Example 3. 実施例４に従う放電灯の一部を示す平面図である。6 is a plan view showing a part of a discharge lamp according to Embodiment 4. FIG. 図１７の口金のリード接続部及び連結部を示す拡大斜視図である。FIG. 18 is an enlarged perspective view showing a lead connecting portion and a connecting portion of the base of FIG. 17. 実施例５に従う放電灯の一部を、リード接続部の塑性変形前の状態で示す平面図である。It is a top view which shows a part of discharge lamp according to Example 5 in the state before plastic deformation of a lead connection part. 図１９の口金のリード接続部及び連結部を示す斜視図である。FIG. 20 is a perspective view showing a lead connecting portion and a connecting portion of the base of FIG. 19. 実施例６に従う放電灯の一部を示す断面図である。10 is a cross-sectional view showing a part of a discharge lamp according to Example 6. FIG. 実施例７に従う放電灯の一部を図７と同様に示す断面図である。It is sectional drawing which shows a part of discharge lamp according to Example 7 similarly to FIG. 実施例８に従う放電灯の一部を図７と同様に示す断面図である。It is sectional drawing which shows a part of discharge lamp according to Example 8 similarly to FIG.

Explanation of symbols

１放電管
６，７リ−ド
１１口金
１２口金本体
１３リード接続部
１４連結部
１９，２０第１及び第２の挟持部分
２１中間部分 1 discharge tube 6, 7 lead 11 base 12 base body 13 lead connection part 14 connection part 19, 20 first and second clamping part 21 intermediate part

Claims

A pair of electrodes, a glass tube surrounding the pair of electrodes, and a pair of leads respectively connected to the pair of electrodes and led out from both ends of the glass tube to the outside of the glass tube A base for mounting on a discharge tube,
A cylindrical base body for covering and holding one end of the glass tube;
A lead connection for connecting the leads;
A connecting portion provided between the lead connecting portion and the base body for electrically and mechanically connecting the lead connecting portion to the base body;
And the lead connecting portions are arranged so as to face each other so that the leads can be interposed therebetween, and extend in a direction away from the connecting portion along the leads, and can be in contact with the leads. A first portion and a second portion formed in the first portion; and an intermediate portion that interconnects the first and second portions and has an opening through which the lead is inserted. A base characterized by.

The first and second portions of the lead connecting portion have a facing interval wider than the diameter of the lead before the base body is attached to the glass tube, and the base body is attached to the glass tube. 2. The base according to claim 1, wherein the lead is formed so as to be sandwiched by plastic deformation after being formed.

The first and second portions of the lead connecting portion have a facing interval narrower than the diameter of the lead before the base body is attached to the glass tube, and the base body is attached to the glass tube. 2. The base according to claim 1, wherein the base is formed so as to be elastically deformed so as to widen a facing interval when sandwiched.

4. The base according to claim 1, wherein the opening of the intermediate portion is a hole having a diameter larger than that of the lead.

4. The base according to claim 1, 2 or 3, wherein the opening of the intermediate portion is a U-shaped or U-shaped notch.

6. The base according to claim 1, wherein the connecting portion is coupled to the intermediate portion of the lead connecting portion.

A pair of electrodes, a glass tube surrounding the pair of electrodes, and a pair of leads respectively connected to the pair of electrodes and led out from both ends of the glass tube to the outside of the glass tube A discharge lamp comprising a discharge tube and a base attached to the discharge tube,
The base includes a cylindrical base body that covers and holds one end portion of the glass tube, a lead connection portion to which the lead is connected, and the lead connection portion that is electrically and mechanically connected to the base body. A coupling portion provided between the lead connection portion and the base body for coupling,
The lead connecting portions are arranged to face each other so that the leads can be interposed between each other, extend in a direction away from the connecting portion along the leads, and sandwich the leads. And a middle portion that connects the first and second portions to each other and has an opening through which the lead is inserted.

The first and second portions of the lead connecting portion have a facing interval wider than the diameter of the lead before the base body is attached to the glass tube, and the base body is attached to the glass tube. 8. The discharge lamp according to claim 7, wherein the lead is sandwiched by being plastically deformed after being formed.

The first and second portions of the lead connecting portion have a facing interval narrower than the diameter of the lead before the base body is attached to the glass tube, and the base body is attached to the glass tube. The discharge lamp according to claim 7, wherein the lead is sandwiched by being elastically deformed so that a facing interval is widened when being applied.

The discharge lamp according to claim 7, wherein the opening of the intermediate portion is a hole having a larger diameter than the lead.

The discharge lamp according to claim 7, wherein the opening of the intermediate portion is a U-shaped or U-shaped notch.

The discharge lamp according to claim 7, 8, 9, 10, or 11, wherein the connecting portion is coupled to the intermediate portion of the lead connection portion.

The discharge lamp according to claim 7, 8, 9, 10, 11, or 12, wherein the first and second portions of the lead connection portion are welded to the lead.

A pair of electrodes, a glass tube surrounding the pair of electrodes, and a pair of leads respectively connected to the pair of electrodes and led out from both ends of the glass tube to the outside of the glass tube A light source device in which a plurality of discharge lamps composed of a discharge tube and a base attached to the discharge tube are arranged,
The base of each discharge lamp includes a cylindrical base body that covers and holds one end portion of the glass tube, a lead connection portion to which the lead is connected, and the lead connection portion that is electrically connected to the base body. A connecting portion provided between the lead connecting portion and the base body for mechanically connecting;
The lead connecting portions are arranged to face each other so that the leads can be interposed between each other, extend in a direction away from the connecting portion along the leads, and sandwich the leads. And a middle portion that connects the first and second portions to each other and has an opening for inserting the lead.