JPH09245736A - Flat fluorescent lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat fluorescent lamp with air tightness at its sealing portion, superior discharge stability, and a simple sealing portion structure capable of being manufactured inexpensively. SOLUTION: A glass bulb whose section is made of flat lead glass is an envelope main body 3, on the inner face of which a phosphor layer 2 is adhered, and inactive gas and a mercury alloy member 6 are sealed inside the envelope main body 3. Plat plate shaped power supply members 4 and 5 are sealed, respectively, at both ends of the envelope main body 3, and one end parts of the power supply members 4 and 5 are so sealed, respectively, as to be positioned outside the envelope main body 3. The portions of the power supply members 4 and 5 positioned inside the envelope main body 3 is electrode portions 4a and 5a, the portions of the power supply members 4 and 5 positioned outside the envelope main body 3 are terminal portions 4b and 5b, and the electrode portions 4 and 5a are protruded, respectively, from both end faces in the envelope main body 3 toward the inside of the envelope main body 3 and is provided.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、ビデオカメラのビュー
ファインダーや液晶テレビ等の液晶表示装置のバックラ
イト等に用いられる平面型蛍光ランプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat fluorescent lamp used for a viewfinder of a video camera or a backlight of a liquid crystal display device such as a liquid crystal television.

【０００２】[0002]

【従来の技術】液晶表示装置のバックライト等に用いら
れる平面型蛍光ランプは、その容囲器本体として、平板
ガラスと皿状のガラスまたは箱状のセラミック容器を貼
り合わせたものや、断面が扁平なガラスバルブを用いた
ものが知られている。2. Description of the Related Art A flat fluorescent lamp used for a backlight of a liquid crystal display device has an enclosure body in which a flat glass and a plate-shaped glass or a box-shaped ceramic container are attached, It is known to use a flat glass bulb.

【０００３】このような平面型蛍光ランプは、それ自体
が均一な面発光をするので、直管型蛍光ランプのよう
に、放射された光を均一な面光源に変換する場合に用い
られる反射器や拡散板を必要としないので、液晶表示装
置の小型軽量化を図ることができるものである。しかし
ながら、このような平面型蛍光ランプは直管型蛍光ラン
プと比して部品コストや製造コストが高く、また歩留ま
りや封着部の信頼性が低下する等の問題があった。Since such a flat fluorescent lamp itself emits uniform surface light, a reflector used for converting emitted light into a uniform surface light source, like a straight tube fluorescent lamp. Since a diffuser plate is not required, the liquid crystal display device can be made smaller and lighter. However, such flat fluorescent lamps have problems such as higher component cost and manufacturing cost than the straight tube fluorescent lamp, and lower yield and reliability of the sealed portion.

【０００４】このような問題を解決するために、図６お
よび図７に示すような封着部構造を有する平面型蛍光ラ
ンプが知られている（特開平３−２１０７５１号公
報）。すなわち、この平面型蛍光ランプ１１は、内面に
蛍光体層（図示せず）が被着された断面が扁平なガラス
バルブ１２の両端部の開口部を、凹部１３ａおよび凸部
１３ｂを有する扁平形状のメタルキャップ１３で封着し
たものである。ガラスバルブ１２の両端部は加熱溶融さ
れてメタルキャップ１３に封着される。In order to solve such a problem, there is known a flat fluorescent lamp having a sealing structure as shown in FIGS. 6 and 7 (Japanese Patent Laid-Open No. 3-210751). That is, the flat fluorescent lamp 11 has a flat shape having a concave portion 13a and a convex portion 13b, and openings at both ends of a glass bulb 12 having a flat cross section with a phosphor layer (not shown) attached to the inner surface. It is sealed with a metal cap 13 of. Both ends of the glass bulb 12 are heated and melted and sealed to the metal cap 13.

【０００５】これにより封着強度を向上することができ
るとともに、電極部となるメタルキャップ１３の凸部１
３ｂのランプ内露呈部に溶融したガラスがかぶさってし
まうのを防止し、電気特性の安定性を向上させようとす
るものである。As a result, the sealing strength can be improved and the convex portion 1 of the metal cap 13 serving as an electrode portion can be improved.
It is intended to prevent the molten glass from covering the exposed portion of the lamp 3b and to improve the stability of electric characteristics.

【０００６】[0006]

【発明が解決しようとする課題】しかしながら、このよ
うな従来の平面型蛍光ランプについて詳細に検討したと
ころ、例えばビデオカメラに用いられる平面型蛍光ラン
プは１インチ以下のサイズであるので、扁平形状のメタ
ルキャップはさらに小さい。したがって、このような、
形状の小さいメタルキャップ１３に深い凹凸部を形成す
ることは至難のことであり、さらに、凹凸部が形成でき
てもメタルキャップ１３の凸部１３ｂの高さＬ₀は１．
０ｍｍ程度が限界であった。However, a detailed examination of such a conventional flat fluorescent lamp has revealed that, for example, a flat fluorescent lamp used in a video camera has a flat shape of 1 inch or less. The metal cap is even smaller. So, like this,
It is extremely difficult to form a deep concave-convex portion on the metal cap 13 having a small shape, and even if the concave-convex portion can be formed, the height L ₀ of the convex portion 13b of the metal cap 13 is 1.
The limit was about 0 mm.

【０００７】そのためガラスバルブの溶融が強めのとき
には凸部１３ｂの頂部まで溶融されたガラスがかぶさっ
てしまい、放電が不安定となり、また溶融が弱めのとき
にはガラスとメタルキャップとの封着面積が小さく、か
つ両者の封着の馴染が悪くなって気密性が低下する等の
問題が発生した。Therefore, when the melting of the glass bulb is strong, the melted glass covers the top of the convex portion 13b and the discharge becomes unstable, and when the melting is weak, the sealing area between the glass and the metal cap is small. In addition, there is a problem that the sealing of the two becomes unfamiliar and the airtightness is reduced.

【０００８】本発明はこのような問題点を解決するため
になされたものであり、封着部の気密性および放電の安
定性に優れ、かつ封着部構造が簡単で安価に製造できる
平面型蛍光ランプを提供することを目的とする。The present invention has been made in order to solve the above problems, and is excellent in the airtightness of the sealing portion and the stability of discharge, and has a simple sealing structure and can be manufactured at a low cost. An object is to provide a fluorescent lamp.

【０００９】[0009]

【課題を解決するための手段】本発明の平面型蛍光ラン
プは、断面が扁平なガラスバルブからなる容囲器本体の
内面に蛍光体層が被着され、かつ、前記容囲器本体内部
に不活性ガスと水銀とが封入されているとともに、前記
容囲器本体の両端部に一対の平板状の給電部材が封着さ
れており、前記容囲器本体内部に位置する前記給電部材
の部分を電極部、前記容囲器本体外部に位置する前記給
電部材の部分を端子部とし、前記電極部が前記容囲器本
体内の両端面から前記容囲器本体内へ向かってそれぞれ
突出して設けられた構成を有する。In the flat fluorescent lamp of the present invention, a phosphor layer is adhered to the inner surface of an enclosure body composed of a glass bulb having a flat cross section, and the interior of the enclosure body is provided. Inert gas and mercury are sealed, and a pair of flat plate-shaped power supply members are sealed at both ends of the enclosure body, and the portion of the power supply member located inside the enclosure body. An electrode portion, and a portion of the power feeding member located outside the enclosure body as a terminal portion, and the electrode portion is provided so as to project from both end surfaces in the enclosure body into the enclosure body. It has a specific configuration.

【００１０】これにより、溶融したガラスが電極部にか
ぶさることを完全に防止でき、安定な放電を得ることが
できる。また、封着された端子部の長さ、すなわち封着
長を大きくできて高い気密性が得られる。さらに、給電
部材の構造を簡単にでき、かつ電極部と端子部とを兼用
しているのでランプコストを低減できる。As a result, it is possible to completely prevent the molten glass from covering the electrode portion, and a stable discharge can be obtained. Further, the length of the sealed terminal portion, that is, the sealing length can be increased, and high airtightness can be obtained. Further, the structure of the power feeding member can be simplified, and the electrode portion and the terminal portion are used in common, so that the lamp cost can be reduced.

【００１１】また、請求項２記載の本発明の平面型蛍光
ランプは、断面が扁平なガラスバルブからなる容囲器本
体の内面に蛍光体層が被着され、かつ、前記容囲器本体
内部に不活性ガスと水銀とが封入されているとともに、
前記容囲器本体の両端部に一対のＴ字状の給電部材が封
着されており、前記容囲器本体内部に位置し、かつ前記
容囲器本体の軸方向と直交する方向に延びる前記給電部
材の部分を電極部、前記容囲器本体外部に位置し、かつ
前記容囲器本体の軸方向に延びる前記給電部材の部分を
端子部とし、前記電極部が前記容囲器本体内の両端面か
ら前記容囲器本体内へ向かってそれぞれ突出して設けら
れた構成を有する。In the flat fluorescent lamp of the present invention as defined in claim 2, a phosphor layer is adhered to an inner surface of an enclosure main body made of a glass bulb having a flat cross section, and the interior of the enclosure main body. In addition to being filled with an inert gas and mercury,
A pair of T-shaped power supply members are sealed at both ends of the enclosure body, are located inside the enclosure body, and extend in a direction orthogonal to the axial direction of the enclosure body. The portion of the power feeding member is located outside the enclosure body, and the portion of the feeding member that extends in the axial direction of the enclosure body serves as the terminal portion, and the electrode portion is located inside the enclosure body. The structure is provided so as to project from both end surfaces toward the inside of the enclosure body.

【００１２】これにより、溶融したガラスが電極部にか
ぶさることを完全に防止でき、安定な放電を得ることが
できる。また、封着された端子部の長さ、すなわち封着
長を大きくできて高い気密性が得られる。さらに、給電
部材の構造を簡単にでき、かつ電極部と端子部とを兼用
しているのでランプコストを低減できる。As a result, it is possible to completely prevent the molten glass from covering the electrode portion, and it is possible to obtain a stable discharge. Further, the length of the sealed terminal portion, that is, the sealing length can be increased, and high airtightness can be obtained. Further, the structure of the power feeding member can be simplified, and the electrode portion and the terminal portion are used in common, so that the lamp cost can be reduced.

【００１３】[0013]

【発明の実施の形態】本発明の平面型蛍光ランプは、断
面が扁平なガラスバルブからなる容囲器本体の内面に蛍
光体層が被着され、かつ、前記容囲器本体内部に不活性
ガスと水銀とが封入されているとともに、前記容囲器本
体の両端部に一対の平板状の給電部材が封着されてお
り、前記容囲器本体内部に位置する前記給電部材の部分
を電極部、前記容囲器本体外部に位置する前記給電部材
の部分を端子部とし、前記電極部が前記容囲器本体内の
両端面から前記容囲器本体内へ向かってそれぞれ突出し
て設けたものであり、給電部材の電極部を容囲器本体内
の両端面から容囲器本体内へ向かって突出して設けてい
るので、溶融したガラスが電極部にかぶさることを完全
に防止できるという作用を有する。また、溶融したガラ
スを容囲器本体両端部および給電部材の封着に有効に利
用できるという作用を有する。BEST MODE FOR CARRYING OUT THE INVENTION In the flat fluorescent lamp of the present invention, a phosphor layer is deposited on the inner surface of an enclosure body composed of a glass bulb having a flat cross section, and the interior of the enclosure body is inactive. Gas and mercury are enclosed, and a pair of flat plate-shaped power supply members are sealed at both ends of the enclosure body, and the portion of the power supply member located inside the enclosure body is an electrode. Part, the portion of the power supply member located outside the enclosure body is used as a terminal portion, and the electrode portions are provided so as to project from both end surfaces in the enclosure body into the enclosure body, respectively. Since the electrode portion of the power feeding member is provided so as to project from both end surfaces inside the enclosure body toward the inside of the enclosure body, it is possible to completely prevent molten glass from covering the electrode portion. Have. Further, it has an effect that the molten glass can be effectively used for sealing both ends of the enclosure main body and the power feeding member.

【００１４】また、本発明の平面型蛍光ランプは、断面
が扁平なガラスバルブからなる容囲器本体の内面に蛍光
体層が被着され、かつ、前記容囲器本体内部に不活性ガ
スと水銀とが封入されているとともに、前記容囲器本体
の両端部に一対のＴ字状の給電部材が封着されており、
前記容囲器本体内部に位置し、かつ前記容囲器本体の軸
方向と直交する方向に延びる前記給電部材の部分を電極
部、前記容囲器本体外部に位置し、かつ前記容囲器本体
の軸方向に延びる前記給電部材の部分を端子部とし、前
記電極部が前記容囲器本体内の両端面から前記容囲器本
体内へ向かってそれぞれ突出して設けているので、溶融
したガラスが電極部にかぶさることを完全に防止でき、
またＴ字状の給電部材を用いているので、封着される給
電部材の面積を少なくでき、封着部の気密性の向上に有
効に利用できるという作用を有する。Further, in the flat fluorescent lamp of the present invention, a phosphor layer is attached to the inner surface of the main body of the envelope which is composed of a glass bulb having a flat cross section, and the interior of the main body of the envelope is provided with an inert gas. While containing mercury, a pair of T-shaped power supply members are sealed at both ends of the enclosure body.
A portion of the power feeding member located inside the enclosure body and extending in a direction orthogonal to the axial direction of the enclosure body is located at an electrode portion, outside the enclosure body, and the enclosure body. Since the portion of the power feeding member extending in the axial direction of the is a terminal portion, the electrode portion is provided so as to protrude from both end surfaces in the envelope body toward the inside of the envelope body, so that the molten glass You can completely prevent covering the electrode part,
Further, since the T-shaped power supply member is used, the area of the power supply member to be sealed can be reduced, and the power supply member can be effectively used for improving the airtightness of the sealing portion.

【００１５】以下、本発明の一実施例について図面を用
いて説明する。図１および図２に示す本発明の一実施例
である平面型蛍光ランプ１は、断面が扁平な肉厚が０．
８ｍｍの鉛ガラスからなるガラスバルブを容囲器本体３
とし、その内面に蛍光体層２が被着され、かつ、容囲器
本体３内部にアルゴン、ネオン、キセノン等の不活性ガ
スおよび水銀を供給する水銀合金部材６が封入されてい
る。An embodiment of the present invention will be described below with reference to the drawings. The flat fluorescent lamp 1 according to one embodiment of the present invention shown in FIGS. 1 and 2 has a flat cross section and a wall thickness of 0.
A glass bulb made of 8 mm lead glass is used for the enclosure body 3
The phosphor layer 2 is adhered to the inner surface thereof, and a mercury alloy member 6 for supplying an inert gas such as argon, neon, xenon and mercury to the interior of the enclosure body 3 is enclosed.

【００１６】容囲器本体３の両端部には、平板状で、厚
さ０．４ｍｍのＮｉ４２％，Ｃｒ６％，Ｆｅ５２％の合
金板からなる給電部材４，５がそれぞれ封着されてお
り、給電部材４，５の一端部は容囲器本体３内部に、他
端部は容囲器本体３外部にそれぞれ位置するように封着
されている。容囲器本体３内部に位置する給電部材４，
５の部分を電極部４ａ，５ａ、容囲器本体３外部に位置
する給電部材４，５の部分を端子部４ｂ，５ｂとし、電
極部４ａ，５ａが容囲器本体３内の両端面から容囲器本
体３内へ向かってそれぞれ突出して設けられている。At both ends of the enclosure body 3, power supply members 4 and 5 made of an alloy plate having a thickness of 0.4 mm and made of Ni 42%, Cr 6% and Fe 52% and having a thickness of 0.4 mm are sealed, respectively. One end of each of the power supply members 4 and 5 is sealed so that it is located inside the enclosure body 3 and the other end is located outside the enclosure body 3. The power supply member 4, which is located inside the enclosure body 3,
The portion 5 is the electrode portion 4a, 5a, the portion of the power supply member 4, 5 located outside the enclosure body 3 is the terminal portion 4b, 5b, and the electrode portions 4a, 5a are from both end surfaces in the enclosure body 3. It is provided so as to project toward the inside of the enclosure body 3.

【００１７】なお、封着方法としては、図３に示すよう
に、給電部材４，５が上下に位置するように容囲器本体
３を直立させて封着している。すなわち、容囲器本体３
の開口端部にかぶさるように凹部が成型された上下一対
のカーボン治具７，８にランプ部品をそれぞれ配置し
て、真空装置（図示せず）内に位置させる。そして、こ
の真空装置によって、容囲器本体３内部を真空に排気し
た後、不活性ガスを封入して、カーボン治具７，８を外
部から高周波誘導加熱して容囲器本体３の両端部を封着
する。この加熱によって、容囲器本体３の両端部がそれ
ぞれ溶融して容囲器本体３の両端開口部が閉塞されると
ともに、チタン−水銀等からなる水銀合金部材６から水
銀が放出され、蛍光ランプ１内に水銀が供給される。な
お、本実施例のランプ完成後の容囲器本体の寸法は縦１
６ｍｍ，横２２ｍｍ，厚さ３．２ｍｍで、図２に示すよ
うに給電部材４，５の封着部の長さＬ₁および電極部４
ａ，５ａの容囲器内への突出高さＬ₂はそれぞれ２．０
ｍｍとした。また、給電部材４，５の端子部４ｂ，５ｂ
は図４に示すように折曲されている。これによって、ラ
ンプ製造する際、給電部材４，５が上下に位置するよう
に容囲器本体３を保持しても、上側に配置された例えば
給電部材４が容囲器本体３内に落ち込むことを防止でき
る。また、給電部材４，５を折曲することにより、平面
型蛍光ランプ１の回路基板（図示せず）への半田付けに
よる取り付けを容易にすることができる。As a sealing method, as shown in FIG. 3, the enclosure main body 3 is upright and sealed so that the power feeding members 4 and 5 are located above and below. That is, the enclosure body 3
The lamp parts are respectively arranged in a pair of upper and lower carbon jigs 7 and 8 in which recesses are formed so as to cover the open ends of the lamp parts, and the lamp parts are positioned in a vacuum device (not shown). Then, after the inside of the enclosure main body 3 is evacuated to a vacuum by this vacuum device, an inert gas is sealed in and the carbon jigs 7 and 8 are heated by high-frequency induction from the outside to both ends of the enclosure main body 3. Seal. By this heating, both ends of the enclosure body 3 are melted to close the openings at both ends of the enclosure body 3, and mercury is released from the mercury alloy member 6 made of titanium-mercury or the like, and the fluorescent lamp is used. Mercury is supplied to the inside of 1. The size of the enclosure body after completion of the lamp of this embodiment is 1
As shown in FIG. 2, the length L ₁ of the sealing portion of the power feeding members 4 and 5 and the electrode portion 4 are 6 mm, the width 22 mm, and the thickness 3.2 mm.
The protrusion heights L ₂ of a and 5a into the container are 2.0, respectively.
mm. In addition, the terminal portions 4b and 5b of the power feeding members 4 and 5
Is bent as shown in FIG. Thus, when the lamp body is manufactured, even if the enclosure body 3 is held so that the electricity supply members 4 and 5 are located above and below, for example, the electricity supply member 4 disposed on the upper side falls into the enclosure body 3. Can be prevented. Further, by bending the power supply members 4 and 5, the flat fluorescent lamp 1 can be easily attached to a circuit board (not shown) by soldering.

【００１８】次に、上記した本実施例の平面型蛍光ラン
プ（以下、本発明品という）と、図６および図７に示す
ように、内面に蛍光体層（図示せず）が被着された断面
が扁平なガラスバルブ１２の両端部の開口部を、凹部１
３ａおよび凸部１３ｂを有する扁平形状のメタルキャッ
プ１３で封着した従来の平面型蛍光ランプ（以下、従来
品という）とをそれぞれ２０灯製作し、液晶バックライ
ト用蛍光ランプの一般的な気密信頼性試験である温度６
５℃、湿度９５％の環境下での放置試験を行った。Next, the above-mentioned flat fluorescent lamp of this embodiment (hereinafter referred to as the product of the present invention) and, as shown in FIGS. 6 and 7, a phosphor layer (not shown) is deposited on the inner surface. The opening of both ends of the glass bulb 12 having a flat cross section is
20 conventional flat fluorescent lamps (hereinafter referred to as conventional products) sealed with a flat metal cap 13 having 3a and a convex portion 13b are manufactured, respectively, and the general airtight reliability of fluorescent lamps for liquid crystal backlights is manufactured. Temperature 6 which is a sex test
A standing test was conducted in an environment of 5 ° C. and a humidity of 95%.

【００１９】その結果、本発明品では１０００時間経過
後において２０灯すべてに気密不良等の不具合は確認さ
れなかった。一方、従来品では、５００時間経過後にお
いて２０灯中の３灯が、さらに１０００時間経過後にお
いては４灯の気密不良等の不具合が発生したのが確認さ
れた。これは、本発明品では給電部材４，５の封着部の
長さＬ₁を約２．０ｍｍと長くすることができたことに
よるものである。一方、従来品では給電部材の封着部の
長さＬ₁を約０．７ｍｍしか確保することができず、ま
た、容囲器本体の開口部を容囲器本体とは別部材である
メタルキャップで覆った構成であるため十分な封着がで
きなかったからである。As a result, in the product of the present invention, defects such as poor airtightness were not confirmed in all 20 lamps after 1000 hours. On the other hand, in the conventional product, it was confirmed that three lamps out of 20 lamps after 500 hours had passed, and after 1000 hours, four lamps had troubles such as poor airtightness. This is because the length L ₁ of the sealing portion of the power feeding members 4 and 5 can be increased to about 2.0 mm in the product of the present invention. On the other hand, in the conventional product, the length L ₁ of the sealing portion of the power feeding member can be secured only about 0.7 mm, and the opening portion of the enclosure body is a metal which is a member different from the enclosure body. This is because the structure covered with the cap did not allow sufficient sealing.

【００２０】さらに、本発明品と従来品とをそれぞれ１
０灯製作した後、高周波パルス点灯回路でランプ電力約
０．５Ｗで点灯して放電の安定性についての試験を行っ
た。Further, each of the present invention product and the conventional product is 1
After producing zero lamps, a high-frequency pulse lighting circuit was lit at a lamp power of about 0.5 W to perform a discharge stability test.

【００２１】その結果、従来品では放電が広がらない等
の不具合のあった不良ランプが４灯確認された。これは
ランプ内に位置する凸部１３ｂ、すなわち電極部の高さ
Ｌ₂が平均で０．３ｍｍしかないため、この電極部の一
部がガラスバルブの溶融したガラス材に覆われてしまっ
たためであった。また、その他の６灯においてもランプ
内の放電面積が不均一であるためにちらつきを生じる場
合があり、さらに、連続点灯したところ、放電面積が狭
いために電極の水銀イオン衝撃によるスパッタリングが
早く、１００時間以内に電極近傍の容囲器本体内面が黒
化した。一方、本発明品では、電極部４ａ，５ａのラン
プ内突出高さＬ₂を２．０ｍｍと高くしているので、溶
融したガラス材が電極部４ａ，５ａにかぶさることがな
く、放電異常の発生は確認されず、また、１０００時間
点灯後においても電極近傍の容囲器本体内面に黒化は発
生しなかった。As a result, it was confirmed that there were four defective lamps that had problems such as the discharge did not spread in the conventional products. This is because the height L _{2 of} the convex portion 13b located inside the lamp, that is, the electrode portion is only 0.3 mm on average, and a part of this electrode portion is covered with the molten glass material of the glass bulb. there were. In addition, in the other six lamps, the discharge area in the lamp is non-uniform, which may cause flicker. Furthermore, when the lamps are continuously lit, the discharge area is narrow, and thus the sputtering by the mercury ion impact of the electrode is fast, Within 100 hours, the inner surface of the main body of the container near the electrode turned black. On the other hand, in the product of the present invention, since the protrusion height L ₂ of the electrode portions 4a and 5a in the lamp is as high as 2.0 mm, the molten glass material does not cover the electrode portions 4a and 5a, and the abnormal discharge occurs. No occurrence was confirmed, and no blackening occurred on the inner surface of the main body of the enclosure near the electrodes even after lighting for 1000 hours.

【００２２】以上のように本実施例の平面型蛍光ランプ
は、溶融したガラスが電極部４ａ，５ａにかぶさること
を完全に防止でき、安定な放電を得ることができる。ま
た、封着された端子部の長さ、すなわち封着長を大きく
でき、封着部の気密性を向上することができる。さら
に、給電部材の構造を簡単にでき、かつ電極部と端子部
とを兼用しているのでランプコストを低減することがで
きる。As described above, in the flat fluorescent lamp of this embodiment, it is possible to completely prevent molten glass from covering the electrode portions 4a and 5a and obtain stable discharge. Further, the length of the sealed terminal portion, that is, the sealing length can be increased, and the airtightness of the sealed portion can be improved. Further, the structure of the power feeding member can be simplified, and the electrode portion and the terminal portion are used in common, so that the lamp cost can be reduced.

【００２３】次に、本発明の他の実施例である平面型蛍
光ランプについて説明する。本実施例の平面型蛍光ラン
プは、上記実施例の構成において、図５に示すように、
Ｔ字状の給電部材９，１０を用いたものであり、容囲器
本体３の両端部に、それぞれ封着されている。容囲器本
体３内部に位置し、かつ容囲器本体３の軸方向と直交す
る方向に延びる給電部材の部分を電極部９ａ，１０ａ、
容囲器本体３外部に位置し、かつ容囲器本体３の軸方向
に延びる給電部材の部分を端子部９ｂ，１０ｂとし、電
極部９ａ，１０ａが容囲器本体３内の両端面から容囲器
本体３内へ向かってそれぞれ突出して設けられている。
なお、本実施例における給電部材の封着は上記実施例と
同様に行う。また、本実施例の平面型蛍光ランプを上記
実施例と同様に、従来品との比較試験を行った結果、上
記実施例と同様な良好な結果を得ることができた。Next, a flat fluorescent lamp which is another embodiment of the present invention will be described. The flat fluorescent lamp of this embodiment has the configuration of the above embodiment, as shown in FIG.
The T-shaped power supply members 9 and 10 are used, and are sealed at both ends of the enclosure body 3. The portions of the power feeding member located inside the enclosure body 3 and extending in the direction orthogonal to the axial direction of the enclosure body 3 are connected to the electrode portions 9a, 10a,
Portions of the power feeding member located outside the enclosure body 3 and extending in the axial direction of the enclosure body 3 are referred to as terminal portions 9b and 10b, and the electrode portions 9a and 10a are connected from both end surfaces in the enclosure body 3. It is provided so as to project toward the inside of the envelope body 3.
The sealing of the power feeding member in this embodiment is performed in the same manner as in the above embodiment. Further, the flat fluorescent lamp of this example was subjected to a comparative test with a conventional product in the same manner as in the above example, and as a result, good results similar to those in the above example were obtained.

【００２４】以上のように本実施例の平面型蛍光ランプ
は、上記実施例と同様に、溶融したガラスが電極部９
ａ，１０ａにかぶさることを完全に防止でき、安定な放
電を得ることができる。また、封着された端子部の長
さ、すなわち封着長を大きくできるとともに、上記実施
例のものよりも端子部の幅を狭くできるので、封着部の
気密性を向上することができる。さらに、給電部材の構
造を簡単にでき、かつ電極部と端子部とを兼用している
のでランプコストを低減することができる。As described above, in the flat fluorescent lamp of this embodiment, the molten glass is the electrode portion 9 as in the above embodiment.
It is possible to completely prevent the a and 10a from being covered, and a stable discharge can be obtained. Further, since the length of the sealed terminal portion, that is, the sealing length can be increased, and the width of the terminal portion can be made narrower than that of the above embodiment, the airtightness of the sealed portion can be improved. Further, the structure of the power feeding member can be simplified, and the electrode portion and the terminal portion are used in common, so that the lamp cost can be reduced.

【００２５】[0025]

【発明の効果】以上説明したように本発明の平面型蛍光
ランプは、溶融したガラスが電極部にかぶさることを完
全に防止でき、安定な放電を得ることができ、また、封
着された端子部の長さ、すなわち封着長を大きくできて
高い気密性が得られるとともに、給電部材の構造を簡単
にでき、かつ電極部と端子部とを兼用しているのでラン
プコストを低減することができる。As described above, in the flat fluorescent lamp of the present invention, it is possible to completely prevent molten glass from covering the electrode portion, obtain a stable discharge, and seal the terminal. The length of the part, that is, the sealing length can be increased to obtain high airtightness, the structure of the power feeding member can be simplified, and the lamp cost can be reduced because the electrode part and the terminal part are used in common. it can.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例である平面型蛍光ランプの斜
視図FIG. 1 is a perspective view of a flat fluorescent lamp that is an embodiment of the present invention.

【図２】同じく断面図FIG. 2 is a sectional view of the same.

【図３】同じく封着方法を説明するための図FIG. 3 is a diagram for similarly explaining the sealing method.

【図４】本発明の他の実施例である平面型蛍光ランプの
斜視図FIG. 4 is a perspective view of a flat fluorescent lamp according to another embodiment of the present invention.

【図５】同じく給電部材の形状を示す透視図FIG. 5 is a perspective view showing the shape of the power feeding member as well.

【図６】従来の平面型蛍光ランプの斜視図FIG. 6 is a perspective view of a conventional flat fluorescent lamp.

【図７】同じく断面図FIG. 7 is a sectional view of the same.

【符号の説明】[Explanation of symbols]

１ 平面型蛍光ランプ ２ 蛍光体層 ３ 容囲器本体 ４，５ 給電部材 ４ａ，５ａ 電極部 ４ｂ，５ｂ 端子部 DESCRIPTION OF SYMBOLS 1 Flat fluorescent lamp 2 Phosphor layer 3 Enclosure body 4, 5 Power supply member 4a, 5a Electrode part 4b, 5b Terminal part

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 断面が扁平なガラスバルブからなる容囲
器本体の内面に蛍光体層が被着され、かつ、前記容囲器
本体内部に不活性ガスと水銀とが封入されているととも
に、前記容囲器本体の両端部に一対の平板状の給電部材
が封着されており、前記容囲器本体内部に位置する前記
給電部材の部分を電極部、前記容囲器本体外部に位置す
る前記給電部材の部分を端子部とし、前記電極部が前記
容囲器本体内の両端面から前記容囲器本体内へ向かって
それぞれ突出して設けられていることを特徴とする平面
型蛍光ランプ。1. A phosphor layer is deposited on the inner surface of an enclosure body composed of a glass bulb having a flat cross section, and an inert gas and mercury are enclosed in the interior of the enclosure body. A pair of flat plate-shaped power supply members are sealed at both ends of the enclosure body, and a portion of the power supply member located inside the enclosure body is located at an electrode portion and outside the enclosure body. A flat fluorescent lamp, wherein the portion of the power supply member is used as a terminal portion, and the electrode portions are provided so as to project from both end surfaces inside the enclosure body toward the inside of the enclosure body. 【請求項２】 断面が扁平なガラスバルブからなる容囲
器本体の内面に蛍光体層が被着され、かつ、前記容囲器
本体内部に不活性ガスと水銀とが封入されているととも
に、前記容囲器本体の両端部に一対のＴ字状の給電部材
が封着されており、前記容囲器本体内部に位置し、かつ
前記容囲器本体の軸方向と直交する方向に延びる前記給
電部材の部分を電極部、前記容囲器本体外部に位置し、
かつ前記容囲器本体の軸方向に延びる前記給電部材の部
分を端子部とし、前記電極部が前記容囲器本体内の両端
面から前記容囲器本体内へ向かってそれぞれ突出して設
けられていることを特徴とする平面型蛍光ランプ。2. A phosphor layer is deposited on the inner surface of an enclosure body made of a glass bulb having a flat cross section, and an inert gas and mercury are enclosed inside the enclosure body. A pair of T-shaped power supply members are sealed at both ends of the enclosure body, are located inside the enclosure body, and extend in a direction orthogonal to the axial direction of the enclosure body. The portion of the power feeding member is an electrode portion, located outside the enclosure body,
Further, a portion of the power feeding member extending in the axial direction of the enclosure body is used as a terminal portion, and the electrode portions are provided so as to project from both end surfaces in the enclosure body toward the inside of the enclosure body. A flat fluorescent lamp characterized in that