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JP3783755B2 - Light bulb shaped fluorescent lamp - Google Patents
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JP3783755B2 - Light bulb shaped fluorescent lamp - Google Patents

Light bulb shaped fluorescent lamp Download PDF

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Publication number
JP3783755B2
JP3783755B2 JP34865198A JP34865198A JP3783755B2 JP 3783755 B2 JP3783755 B2 JP 3783755B2 JP 34865198 A JP34865198 A JP 34865198A JP 34865198 A JP34865198 A JP 34865198A JP 3783755 B2 JP3783755 B2 JP 3783755B2
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JP
Japan
Prior art keywords
cover
base
caulking
fluorescent lamp
bulb
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP34865198A
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Japanese (ja)
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JP2000173302A (en
Inventor
光生 松本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Lighting and Technology Corp
Original Assignee
Toshiba Lighting and Technology Corp
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Priority to JP34865198A priority Critical patent/JP3783755B2/en
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  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、口金を備えた電球形蛍光ランプに関する。
【0002】
【従来の技術】
従来、例えば、一般照明用電球のソケットに装着可能な口金を備えた電球形蛍光ランプでは、一端に口金が固定された樹脂製のカバーを備え、このカバーの内部に点灯回路を収納し、カバーの他端に発光管が保持されたホルダを取り付けるとともに、必要に応じて発光管を覆うグローブを取り付けている。
【0003】
口金とカバーとの固定は、口金をカバーの一端に設けられた口金取付部に被せて接着剤により接着固定しており、また、十分な固定強度を確保する場合には、接着剤による接着固定に加えて、口金をカバーの口金取付部にねじ込むことで補助的に仮固定するようにしている。
【0004】
【発明が解決しようとする課題】
しかしながら、従来、口金とカバーとを接着剤により接着固定しているが、十分な固定強度を確保する場合には、口金をカバーの口金取付部にねじ込んで補助的に仮固定する必要があり、口金のねじ込み作業が必要で、組立の自動化が困難となる問題を有している。
【0005】
本発明は、このような点に鑑みなされたもので、口金とカバーとの固定強度を高め、組立の自動化を容易にできる電球形蛍光ランプを提供することを目的とする。
【0006】
【課題を解決するための手段】
請求項1記載の電球形蛍光ランプは、口金取付部を有するカバーと;カバーに取り付けられる発光管と;カバー内に収納される点灯回路と;カバーの口金取付部の外側に嵌合される嵌合部、および嵌合部の外側から口金取付部にかしめられるとともにそのかしめ方向の先端側が基端部側から分離されて口金取付部が露出するかしめ部を有する口金と;を具備しているものである。
【0007】
そして、嵌合部の外側から口金取付部にかしめられるとともにそのかしめ方向の先端側が基端部側から分離されて口金取付部が露出するかしめ部を有するので、かしめ深さを深くするとともにかしめ代を増大させ、口金とカバーとの固定強度を高め、さらに、カバーの口金取付部が露出することによってかしめ状態を目視による確認を容易にし、組立の自動化にも容易に対応可能とする。
【0008】
請求項2記載の電球形蛍光ランプは、請求項1記載の電球形蛍光ランプにおいて、かしめ部は、口金取付部側を頂部とする略円錐形状であるものである。
【0009】
そして、かしめ部は口金取付部側を頂部とする略円錐形状であり、かしめ深さを深くしてかしめ代を増大させ、口金とカバーとの固定強度を高める。
【0010】
請求項3記載の電球形蛍光ランプは、請求項1または2記載の電球形蛍光ランプにおいて、かしめ部は、先端側が尖ったニードルピンによるポンチングによって形成されているものである。
【0011】
そして、先端側が尖ったニードルピンによるポンチングによってかしめ部を容易に形成可能とする。
【0012】
【発明の実施の形態】
以下、本発明の一実施の形態を図面を参照して説明する。
【0013】
図1および図2に第1の実施の形態を示し、図1は電球形蛍光ランプの口金とカバーとの固定部分を拡大した一部の断面図、図2は電球形蛍光ランプの一部を切り欠いた側面図である。
【0014】
図2において、電球形蛍光ランプは、カバー11、グローブ12、口金13、発光管14、点灯回路15およびホルダ16などにより構成され、カバー11とグローブ12とで略球状(ボール状)に形成されている。なお、以下、カバー11の一端の口金13側を上側として説明する。
【0015】
カバー11は、例えばポリブチレンテレフタレート(PBT)などの耐熱性を有する白色の合成樹脂にて形成され、下方に拡開する略円環状のカバー本体21、およびこのカバー本体21から上方に延設された略円筒状の口金取付部22を有している。カバー本体21の下端部にグローブ12が係合されて取り付けられる開口縁部23が形成され、この開口縁部23より内側に略円筒状の発光管取付部24が下方へ向けて突出形成されている。口金取付部22の下端部に口金13が嵌合される径大な口金嵌合部25が形成されている。
【0016】
また、グローブ12は、透明あるいは光拡散性を有する乳白色などで、ガラスあるいは合成樹脂により、略球状に形成されている。グローブ12の上端には、発光管14が挿通されるとともにカバー11の内側に係合される開口縁部28が形成されている。
【0017】
また、口金13は、E26形などのエジソン形の口金を構成するもので、絶縁部31を有し、この絶縁部31の上端中央に導電性を有する先端口金部32が固定され、絶縁部43の外周にソケットに螺合される導電性を有する略円筒状の螺合口金部33が形成されている。螺合口金部33の下端にはカバー11の口金取付部22の口金嵌合部25の外側すなわち外周に嵌合される嵌合部(カバー嵌合部)34が形成されている。螺合口金部33は、金属製であり、例えば、黄銅が用いられたり、金属の表面にニッケルメッキが施されて構成されている。そして、この嵌合部34の複数箇所には、嵌合部34の外側から口金取付部22にかしめられるとともにそのかしめ方向の先端側が分離されて口金取付部22が露出するかしめ部35が形成されている。かしめ部35は、嵌合部34の外周の複数方向、例えば8方向から相対してポンチングされ、それら8箇所で口金13とカバー11とをかしめて固定している。
【0018】
また、発光管14は、略同形状の3本のU字状屈曲形のバルブ38を所定の位置に配置し、図示しない連通管で順次接続して、1本の放電路が形成されている。各バルブ38は、内面に蛍光体膜が形成されているとともに、内部にアルゴンなどの希ガスや水銀などが封入されている。発光管14の両端部に位置する各バルブ38の端部には図示しない電極が配置され、各電極はバルブ38の外部に導出された図示しないワイヤを通じて点灯回路15に電気的に接続されている。
【0019】
また、点灯回路15は、回路基板41を備え、この回路基板41の上面あるいは両面に複数の電気部品42が実装され、発光管14の高周波点灯を行なうインバータ回路が構成されている。なお、回路基板41の両面に電気部品42が実装される場合には、回路基板41の上面に比較的耐熱性の弱い電解コンデンサ、フィルムコンデンサなどの電気部品42が実装され、回路基板41の下面には比較的耐熱性が強いとともに厚さ寸法が小さいダイオード、抵抗などのチップ状の電気部品42が実装される。
【0020】
また、ホルダ16は、例えばポリブチレンテレフタレート(PBT)などの耐熱性を有する合成樹脂にて形成され、下部には発光管14の各バルブ38の端部が挿通されて接着剤により接着固定され、上部には点灯回路15の回路基板41が取り付けられ、一体的にユニット化されている。そして、ホルダ16は、カバー11の発光管取付部24の内側に挿入され、図示しない爪構造によって発光管取付部24に固定されている。
【0021】
次に、図1において、かしめ部35は、嵌合部34の外側から、略円錐状の先端が尖ったニードルピン(ポンチ)によるポンチングによって形成されており、嵌合部34を口金取付部22側に突き抜けた状態で口金取付部22にかしめられている。そして、かしめ部35は、ポンチングにより、口金取付部22側を頂部とする略円錐形状に窪む形状となり、ポンチング過程でその頂部45側が基端部46側に対して引っ張られて延びるとともにその延びが限界を超えることで亀裂が生じて切り離され、分離された頂部45側と基端部46側との間に口金取付部22が露出する開口部(亀裂部)47が形成されている。
【0022】
なお、かしめ部35の各寸法は、例えば、口金13の嵌合部34の肉厚aは0.2〜0.3mm程度、カバー11の口金取付部22(口金嵌合部25)の肉厚bは3mm程度、かしめ部35の開口48側の直径cは1.5mm、かしめ部35の深さdは0.7mm程度となっている。
【0023】
そして、口金13の嵌合部34の外側からのポンチングによって嵌合部34をカバー11の口金取付部22側に突き抜けた状態で口金取付部22にかしめるので、かしめ部35のかしめ深さを深くできるとともにかしめ代を増大でき、口金13とカバー11との固定強度を高めることができ、組立の自動化にも容易に対応できる。
【0024】
また、かしめ部35において嵌合部34を突き抜けると開口部47が開口され、この開口部47を通じてカバー11の口金取付部22が露出するので、嵌合部34を突き抜けた状態すなわちかしめ状態を目視により容易に確認できる。このとき、カバー11が白色であると、例えば黄銅色などの口金13との色の区別がつきやすく、容易に確認できる。なお、カバー11の色は何色でもよいが、口金13との区別がつきやすいほうが好ましい。
【0025】
また、かしめ部35はカバー11の口金取付部22側を頂部とする略円錐形状であり、その頂部45側が分離される状態までかしめ深さを深くしてかしめ代を増大でき、口金13とカバー11との固定強度を高めることができ、しかも、かしめ深さを深くしても、カバー11の口金取付部22に割れなどが発生することがない。
【0026】
また、先端側が尖ったニードルピンによるポンチングによってかしめ部35を容易に形成でき、組立の自動化を容易にできる。
【0027】
次に、図3ないし図5に第2の実施の形態を示し、図3は電球形蛍光ランプの断面図、図4はカバーの一部を切り欠いた側面図、図5はカバーの底面図である。なお、第1の実施の形態と同一構造については同一符号を用いてその説明を省略する。
【0028】
カバー11のカバー本体21の内面に、開口縁部23の内側に沿って複数のリブ51が放射状に突出形成され、これらリブ51より上方にホルダ16を位置決めおよび係止する複数のストッパ52および複数の係止爪53が形成されている。
【0029】
グローブ12の開口縁部28にはリブ51の下面に係合される段部54が形成され、開口縁部28の先端側はリブ51の内周側に進入配置される。
【0030】
口金13は、第1の実施の形態と同様のかしめ部でカバー11の口金取付部22にかしめ固定されている。
【0031】
発光管14には1本のバルブを鞍形に屈曲したバルブ38が用いられている。
【0032】
ホルダ16は、円板状の仕切板部55、この仕切板部55の周縁から上方に向けて立設された周縁部56を有しており、カバー11の内側に挿入して取り付ける際に周縁部56の上端がストッパ52に当接されるとともに周縁部56に係止爪53が引っ掛かって係止される。
【0033】
そして、組立工程において、カバー11にホルダ16を取り付けた後、カバー11の開口縁部23の内側のリブ51とホルダ16の周縁部56との間に例えばシリコーン接着剤などの接着剤57を注入し、グローブ12の開口縁部28をカバー11の開口縁部23の内側に合わせ、グローブ12の開口縁部28の先端をリブ51とホルダ16の周縁部56との間の接着剤57に挿入する。
【0034】
グローブ12の開口縁部28の先端をリブ51とホルダ16の周縁部56との間の接着剤57に挿入すると、接着剤57が複数のリブ51の間に押し出されるため、カバー11に対する接着剤57の接着面積が増大し、カバー11とグローブ12との接着強度を高めることができる。
【0035】
また、グローブ12の開口縁部28がリブ51に係合し、グローブ12をカバー11に位置決めできる。
【0036】
そして、上述した各実施の形態の電球形蛍光ランプを備えることで照明器具を構成することができる。
【0037】
なお、かしめ部35は、略円錐形状とすることでかしめ深さを深くすることができるが、略円錐形状に限らず、例えば略角錐形状、略円筒形状、略球曲面形状などでもよく、いずれの形状でも嵌合部34をカバー11の口金取付部22側に突き抜けた状態で口金取付部22にかしめることにより、かしめ部35のかしめ深さを深くしてかしめ代を増大でき、口金13とカバー11との固定強度を高めることができる。
【0038】
また、上述の各実施の形態では、発光管14を覆うグローブ12を備えた構成としたが、発光管14が露出する構成としてもよい。
【0039】
また、発光管の形状は、例えばU字状あるいはH字状のバルブを2本、3本あるいは4本などを接続して構成したり、1本のバルブを鞍形に屈曲して構成してもよい。
【0040】
【発明の効果】
請求項1記載の電球形蛍光ランプによれば、口金の嵌合部の外側からカバーの口金取付部にかしめられるとともにそのかしめ方向の先端側が基端部側から分離されて口金取付部が露出するかしめ部を有するので、かしめ部のかしめ深さを深くできるとともにかしめ代を増大でき、口金とカバーとの固定強度を高めることができ、さらに、カバーの口金取付部が露出することによってかしめ状態を目視により容易に確認でき、組立の自動化にも容易に対応できる。
【0041】
請求項2記載の電球形蛍光ランプによれば、請求項1記載の電球形蛍光ランプの効果に加えて、かしめ部は口金取付部側を頂部とする略円錐形状であり、かしめ深さを深くしてかしめ代を増大させ、口金とカバーとの固定強度を高めることができる。
【0042】
請求項3記載の電球形蛍光ランプによれば、請求項1または2記載の電球形蛍光ランプの効果に加えて、先端側が尖ったニードルピンによるポンチングによってかしめ部を容易に形成できる。
【図面の簡単な説明】
【図1】本発明の一実施の形態を示す電球形蛍光ランプの口金とカバーとの固定部分を拡大した一部の断面図である。
【図2】同上電球形蛍光ランプの一部を切り欠いた側面図である。
【図3】本発明の他の実施の形態を示す電球形蛍光ランプの断面図である。
【図4】同上カバーの一部を切り欠いた側面図である。
【図5】同上カバーの底面図である。
【符号の説明】
11 カバー
13 口金
14 発光管
15 点灯回路
22 口金取付部
34 嵌合部
35 かしめ部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bulb-type fluorescent lamp provided with a base.
[0002]
[Prior art]
Conventionally, for example, a light bulb-type fluorescent lamp having a base that can be attached to a socket of a general lighting bulb has a resin cover with a base fixed to one end, and a lighting circuit is housed inside the cover. At the other end, a holder holding the arc tube is attached, and a glove that covers the arc tube is attached if necessary.
[0003]
The base and cover are fixed with an adhesive covering the base mounting part provided at one end of the cover, and adhesive fixing with an adhesive to ensure sufficient fixing strength. In addition to this, the base is screwed into the base mounting portion of the cover so as to be temporarily fixed.
[0004]
[Problems to be solved by the invention]
However, conventionally, the base and the cover are bonded and fixed with an adhesive, but when securing a sufficient fixing strength, it is necessary to screw the base into the base mounting portion of the cover and temporarily fix it. There is a problem that it is difficult to automate the assembly because the screwing operation of the base is necessary.
[0005]
The present invention has been made in view of these points, and an object of the present invention is to provide a light bulb-type fluorescent lamp that can increase the fixing strength between the base and the cover and can facilitate the automation of assembly.
[0006]
[Means for Solving the Problems]
The bulb-type fluorescent lamp according to claim 1 is a cover having a base attaching portion; an arc tube attached to the cover; a lighting circuit housed in the cover; and a fitting fitted to the outside of the base attaching portion of the cover. And a base having a caulking part that is caulked to the base attaching part from the outside of the fitting part and the fitting part, and the tip end side in the caulking direction is separated from the base end part side, and the base attaching part is exposed. It is.
[0007]
Further, since there is a caulking portion that is caulked from the outer side of the fitting portion to the base attaching portion and the distal end side in the caulking direction is separated from the base end side and the base attaching portion is exposed, the caulking depth is increased and the caulking allowance is increased. , The fixing strength between the base and the cover is increased, and further, the caulking state is easily confirmed by visual inspection by exposing the base mounting portion of the cover, and the assembly can be easily handled.
[0008]
The bulb-type fluorescent lamp according to claim 2 is the bulb-type fluorescent lamp according to claim 1, wherein the caulking portion has a substantially conical shape with the cap mounting portion side as a top portion.
[0009]
The caulking portion has a substantially conical shape with the cap mounting portion side as the top, and the caulking depth is increased to increase the caulking allowance, and the fixing strength between the cap and the cover is increased.
[0010]
The bulb-type fluorescent lamp according to claim 3 is the bulb-type fluorescent lamp according to claim 1 or 2, wherein the caulking portion is formed by punching with a needle pin having a sharp tip.
[0011]
The caulking portion can be easily formed by punching with a needle pin having a sharp tip.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0013]
1 and 2 show a first embodiment. FIG. 1 is a partial cross-sectional view in which a fixing portion between a cap and a cover of a light bulb shaped fluorescent lamp is enlarged, and FIG. 2 is a part of the light bulb shaped fluorescent lamp. It is a cutaway side view.
[0014]
In FIG. 2, the bulb-type fluorescent lamp includes a cover 11, a globe 12, a base 13, an arc tube 14, a lighting circuit 15, a holder 16, and the like, and the cover 11 and the globe 12 are formed in a substantially spherical shape (ball shape). ing. In the following description, the base 13 side at one end of the cover 11 is described as the upper side.
[0015]
The cover 11 is formed of a heat-resistant white synthetic resin such as polybutylene terephthalate (PBT), for example, and has a substantially annular cover body 21 that extends downward, and extends upward from the cover body 21. Furthermore, it has a substantially cylindrical base mounting portion 22. An opening edge 23 to which the globe 12 is engaged and attached is formed at the lower end portion of the cover body 21, and a substantially cylindrical arc tube attaching portion 24 is formed to project downward from the inside of the opening edge 23. Yes. A large-diameter base fitting part 25 to which the base 13 is fitted is formed at the lower end part of the base attaching part 22.
[0016]
The globe 12 is milky white having transparency or light diffusibility, etc., and is formed in a substantially spherical shape with glass or synthetic resin. At the upper end of the globe 12, an opening edge portion 28 is formed through which the arc tube 14 is inserted and engaged with the inside of the cover 11.
[0017]
The base 13 constitutes an Edison-type base such as an E26 type, and has an insulating portion 31. A conductive tip portion 32 is fixed at the center of the upper end of the insulating portion 31, and an insulating portion 43 is provided. A substantially cylindrical screw base portion 33 having conductivity and screwed into the socket is formed on the outer periphery of the base plate. A fitting portion (cover fitting portion) 34 is formed at the lower end of the screw fitting portion 33 so as to be fitted to the outer side, that is, the outer periphery of the mouth fitting portion 25 of the mouthpiece attachment portion 22 of the cover 11. The screw cap portion 33 is made of metal, for example, brass is used, or the metal surface is plated with nickel. A plurality of locations of the fitting portion 34 are formed with caulking portions 35 that are caulked to the base attaching portion 22 from the outside of the fitting portion 34 and the tip end side in the caulking direction is separated to expose the base attaching portion 22. ing. The caulking portion 35 is punched relative to the outer periphery of the fitting portion 34 in a plurality of directions, for example, 8 directions, and the base 13 and the cover 11 are caulked and fixed at these 8 locations.
[0018]
Further, the arc tube 14 has three U-shaped bent bulbs 38 having substantially the same shape arranged at predetermined positions and sequentially connected by a communication tube (not shown) to form one discharge path. . Each bulb 38 has a phosphor film formed on the inner surface, and a rare gas such as argon, mercury or the like is sealed inside. An electrode (not shown) is disposed at the end of each bulb 38 located at both ends of the arc tube 14, and each electrode is electrically connected to the lighting circuit 15 through a wire (not shown) led out of the bulb 38. .
[0019]
The lighting circuit 15 includes a circuit board 41, and a plurality of electrical components 42 are mounted on the upper surface or both surfaces of the circuit board 41, and an inverter circuit that performs high-frequency lighting of the arc tube 14 is configured. When the electrical components 42 are mounted on both surfaces of the circuit board 41, the electrical components 42 such as electrolytic capacitors and film capacitors having relatively low heat resistance are mounted on the upper surface of the circuit board 41, and the lower surface of the circuit board 41. A chip-shaped electrical component 42 such as a diode or resistor having a relatively high heat resistance and a small thickness is mounted on the chip.
[0020]
Further, the holder 16 is formed of heat-resistant synthetic resin such as polybutylene terephthalate (PBT), for example, and the lower end of each bulb 38 of the arc tube 14 is inserted and fixed by an adhesive at the lower part. A circuit board 41 of the lighting circuit 15 is attached to the upper part, and is unitized as a unit. The holder 16 is inserted inside the arc tube mounting portion 24 of the cover 11 and fixed to the arc tube mounting portion 24 by a claw structure (not shown).
[0021]
Next, in FIG. 1, the caulking portion 35 is formed from the outside of the fitting portion 34 by punching with a needle pin (punch) having a substantially conical tip, and the fitting portion 34 is connected to the base mounting portion 22. It is caulked to the base mounting portion 22 in a state of penetrating to the side. The caulking portion 35 is depressed by punching into a substantially conical shape with the base mounting portion 22 side as a top portion, and the top portion 45 side is pulled and extended with respect to the base end portion 46 side in the punching process. Exceeds the limit, a crack is generated and separated, and an opening (crack) 47 is formed between the separated top portion 45 side and base end portion 46 side where the base attachment portion 22 is exposed.
[0022]
The dimensions of the caulking portion 35 are, for example, the thickness a of the fitting portion 34 of the base 13 is about 0.2 to 0.3 mm, and the thickness of the base mounting portion 22 (base fitting portion 25) of the cover 11. b is about 3 mm, the diameter c of the caulking portion 35 on the opening 48 side is 1.5 mm, and the depth d of the caulking portion 35 is about 0.7 mm.
[0023]
Then, the caulking depth of the caulking portion 35 is increased because the fitting portion 34 is pierced to the base mounting portion 22 side of the cover 11 by punching from the outside of the fitting portion 34 of the base 13. It can be deepened and the caulking allowance can be increased, the fixing strength between the base 13 and the cover 11 can be increased, and the assembly can be easily automated.
[0024]
Further, when the caulking portion 35 penetrates the fitting portion 34, an opening 47 is opened, and the base mounting portion 22 of the cover 11 is exposed through the opening 47, so that the state where the fitting portion 34 is penetrated, that is, the caulking state is visually observed. Can be easily confirmed. At this time, if the cover 11 is white, it is easy to distinguish the color from the base 13 such as a brass color, and it can be easily confirmed. The cover 11 may have any number of colors, but it is preferable that the cover 11 can be easily distinguished from the base 13.
[0025]
The caulking portion 35 has a substantially conical shape with the cap mounting portion 22 side of the cover 11 as a top portion, and the caulking depth can be increased until the top portion 45 side is separated to increase the caulking allowance. The fixing strength to the cover 11 can be increased, and even if the caulking depth is increased, the base mounting portion 22 of the cover 11 is not cracked.
[0026]
Further, the caulking portion 35 can be easily formed by punching with a needle pin having a sharp tip, and assembly can be easily automated.
[0027]
Next, FIG. 3 to FIG. 5 show a second embodiment, FIG. 3 is a sectional view of a bulb-type fluorescent lamp, FIG. 4 is a side view with a part of the cover cut out, and FIG. It is. In addition, about the same structure as 1st Embodiment, the description is abbreviate | omitted using the same code | symbol.
[0028]
A plurality of ribs 51 are radially formed on the inner surface of the cover main body 21 of the cover 11 along the inside of the opening edge 23, and a plurality of stoppers 52 and a plurality of stoppers 52 for positioning and locking the holder 16 above the ribs 51 are provided. A locking claw 53 is formed.
[0029]
A stepped portion 54 that is engaged with the lower surface of the rib 51 is formed at the opening edge portion 28 of the globe 12, and the distal end side of the opening edge portion 28 is disposed so as to enter the inner peripheral side of the rib 51.
[0030]
The base 13 is caulked and fixed to the base mounting part 22 of the cover 11 by the same caulking part as in the first embodiment.
[0031]
The arc tube 14 uses a bulb 38 obtained by bending one bulb into a bowl shape.
[0032]
The holder 16 has a disc-shaped partition plate portion 55 and a peripheral portion 56 erected upward from the periphery of the partition plate portion 55. When the holder 16 is inserted into the cover 11 and attached, The upper end of the portion 56 is brought into contact with the stopper 52 and the locking claw 53 is hooked and locked to the peripheral portion 56.
[0033]
In the assembly process, after attaching the holder 16 to the cover 11, an adhesive 57 such as a silicone adhesive is injected between the rib 51 inside the opening edge 23 of the cover 11 and the peripheral edge 56 of the holder 16. Then, the opening edge 28 of the globe 12 is aligned with the inside of the opening edge 23 of the cover 11, and the tip of the opening edge 28 of the globe 12 is inserted into the adhesive 57 between the rib 51 and the peripheral edge 56 of the holder 16. To do.
[0034]
When the tip of the opening edge portion 28 of the globe 12 is inserted into the adhesive 57 between the rib 51 and the peripheral portion 56 of the holder 16, the adhesive 57 is pushed out between the plurality of ribs 51, so that the adhesive to the cover 11 The adhesion area of 57 is increased, and the adhesion strength between the cover 11 and the globe 12 can be increased.
[0035]
Further, the opening edge portion 28 of the globe 12 engages with the rib 51, and the globe 12 can be positioned on the cover 11.
[0036]
And a lighting fixture can be comprised by providing the light bulb-type fluorescent lamp of each embodiment mentioned above.
[0037]
The caulking portion 35 can have a substantially conical shape to increase the caulking depth, but is not limited to a substantially conical shape, and may be, for example, a substantially pyramid shape, a substantially cylindrical shape, a substantially spherical curved surface shape, etc. In this shape, the caulking depth of the caulking portion 35 can be increased to increase the caulking allowance by caulking the cap mounting portion 22 with the fitting portion 34 penetrating to the cap mounting portion 22 side of the cover 11. The fixing strength between the cover 11 and the cover 11 can be increased.
[0038]
In each of the above-described embodiments, the globe 12 covering the arc tube 14 is provided. However, the arc tube 14 may be exposed.
[0039]
The arc tube can be formed by connecting two, three, or four U-shaped or H-shaped bulbs, or by bending one bulb into a bowl shape. Also good.
[0040]
【The invention's effect】
According to the light bulb-type fluorescent lamp of claim 1, the cap mounting portion is exposed by caulking from the outside of the fitting portion of the cap to the cap mounting portion of the cover, and the distal end side in the caulking direction is separated from the base end side. Since it has a caulking part, the caulking depth of the caulking part can be increased, the caulking allowance can be increased, the fixing strength between the base and the cover can be increased, and further, the caulking state can be obtained by exposing the base attaching part of the cover. It can be easily confirmed by visual inspection and can easily cope with assembly automation.
[0041]
According to the light bulb shaped fluorescent lamp according to claim 2, in addition to the effect of the light bulb shaped fluorescent lamp according to claim 1, the caulking portion has a substantially conical shape with the cap mounting portion side as a top portion, and the caulking depth is increased. Thus, the caulking allowance can be increased and the fixing strength between the base and the cover can be increased.
[0042]
According to the light bulb shaped fluorescent lamp of the third aspect, in addition to the effect of the light bulb shaped fluorescent lamp according to the first or second aspect, the caulking portion can be easily formed by punching with a needle pin having a sharp tip.
[Brief description of the drawings]
FIG. 1 is an enlarged partial cross-sectional view of a fixing portion between a base and a cover of a light bulb shaped fluorescent lamp showing an embodiment of the present invention.
FIG. 2 is a side view in which a part of the bulb-type fluorescent lamp is cut away.
FIG. 3 is a sectional view of a bulb-type fluorescent lamp showing another embodiment of the present invention.
FIG. 4 is a side view in which a part of the cover is cut away.
FIG. 5 is a bottom view of the cover.
[Explanation of symbols]
11 Cover
13 base
14 arc tube
15 Lighting circuit
22 Base mounting part
34 Mating part
35 Caulking section

Claims (3)

口金取付部を有するカバーと;
カバーに取り付けられる発光管と;
カバー内に収納される点灯回路と;
カバーの口金取付部の外側に嵌合される嵌合部、および嵌合部の外側から口金取付部にかしめられるとともにそのかしめ方向の先端側が基端部側から分離されて口金取付部が露出するかしめ部を有する口金と;
を具備していることを特徴とする電球形蛍光ランプ。
A cover having a base mounting portion;
An arc tube attached to the cover;
A lighting circuit housed in the cover;
The fitting portion that is fitted to the outside of the cover attachment portion of the cover, and the crimp attachment portion is caulked from the outside of the fitting portion, and the distal end side in the caulking direction is separated from the base end portion side to expose the die attachment portion. A base having a caulking portion;
A bulb-type fluorescent lamp characterized by comprising:
かしめ部は、口金取付部側を頂部とする略円錐形状である
ことを特徴とする請求項1記載の電球形蛍光ランプ。
The bulb-type fluorescent lamp according to claim 1, wherein the caulking portion has a substantially conical shape with the cap mounting portion side as a top portion.
かしめ部は、先端側が尖ったニードルピンによるポンチングによって形成されている
ことを特徴とする請求項1または2記載の電球形蛍光ランプ。
The bulb-type fluorescent lamp according to claim 1 or 2, wherein the caulking portion is formed by punching with a needle pin having a sharp tip.
JP34865198A 1998-12-08 1998-12-08 Light bulb shaped fluorescent lamp Expired - Fee Related JP3783755B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34865198A JP3783755B2 (en) 1998-12-08 1998-12-08 Light bulb shaped fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34865198A JP3783755B2 (en) 1998-12-08 1998-12-08 Light bulb shaped fluorescent lamp

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2005317152A Division JP2006086131A (en) 2005-10-31 2005-10-31 Light bulb shaped fluorescent lamp

Publications (2)

Publication Number Publication Date
JP2000173302A JP2000173302A (en) 2000-06-23
JP3783755B2 true JP3783755B2 (en) 2006-06-07

Family

ID=18398447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34865198A Expired - Fee Related JP3783755B2 (en) 1998-12-08 1998-12-08 Light bulb shaped fluorescent lamp

Country Status (1)

Country Link
JP (1) JP3783755B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008209818A (en) 2007-02-28 2008-09-11 Funai Electric Co Ltd Liquid crystal display
JP7089224B2 (en) * 2018-09-18 2022-06-22 岩崎電気株式会社 Lamp with E-shaped base

Also Published As

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