JP2008181895A - Connector for discharge tube and discharge tube with connector - Google Patents
Connector for discharge tube and discharge tube with connector Download PDFInfo
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- JP2008181895A JP2008181895A JP2008088468A JP2008088468A JP2008181895A JP 2008181895 A JP2008181895 A JP 2008181895A JP 2008088468 A JP2008088468 A JP 2008088468A JP 2008088468 A JP2008088468 A JP 2008088468A JP 2008181895 A JP2008181895 A JP 2008181895A
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放電管を構成するガラス管の端部に取り付けられる放電管用コネクタ及びその放電管用コネクタを備えたコネクタ付き放電管に関する。 The present invention relates to a discharge tube connector attached to an end of a glass tube constituting the discharge tube and a discharge tube with a connector provided with the discharge tube connector.
放電管(冷陰極蛍光放電管又はCCFL)は、例えば、TVモニター、ノートパソコン又は携帯電話等の表示装置の液晶バックライト光源として使用されている。公知の放電管(20)は、図14に示すように、アルゴン等の放電用ガス及び水銀を収容する閉鎖空間(23)を形成するガラス管(21)と、カップ状に形成され且つ閉鎖空間(23)内に配置された一対の金属製の電極(24)と、一端が電極(24)に接続され且つ他端がガラス管(21)の端部(21a)から外部に導出される金属製のリード(22)と、ガラス管(21)の内面に被覆され且つ電極(24)の放電により発生する紫外線の照射を受けて発光する蛍光体層(25)とを備える。図示しないが、前述した表示装置では、液晶パネルの背面にガラス管(21)を把持又は挟持する樹脂製のホルダを備え、ホルダにより放電管(20)を導光板に隣接して配置する。ガラス管(21)の両端部(21a)のリード(22)にハーネス線を半田により接続して、表示装置の電源装置から放電管(20)に電力が供給され、裏面側から液晶パネルに光を照射することができる。 A discharge tube (cold cathode fluorescent discharge tube or CCFL) is used as a liquid crystal backlight light source of a display device such as a TV monitor, a notebook computer, or a mobile phone. As shown in FIG. 14, a known discharge tube (20) includes a glass tube (21) that forms a closed space (23) that contains a discharge gas such as argon and mercury, and a cup-shaped and closed space. (23) A pair of metal electrodes (24) disposed in the metal, one end connected to the electrode (24) and the other end led to the outside from the end (21a) of the glass tube (21) And a phosphor layer (25) that is coated on the inner surface of the glass tube (21) and emits light upon irradiation with ultraviolet rays generated by the discharge of the electrode (24). Although not shown, the display device described above includes a resin holder for holding or sandwiching the glass tube (21) on the back surface of the liquid crystal panel, and the discharge tube (20) is disposed adjacent to the light guide plate by the holder. The harness wire is connected to the leads (22) at both ends (21a) of the glass tube (21) by soldering, and power is supplied from the power supply device of the display device to the discharge tube (20), and light is applied to the liquid crystal panel from the back side. Can be irradiated.
これに対し、下記特許文献1は、板状の導電部と、導電部に取り付けられる取付部と、取付部の先端から垂直方向に折曲して形成され且つ放電管のリードを支持する電極保持部とを備える金属製の放電管保持部材(ホルダ)を開示する。電極保持部に形成された溝状の嵌合部に放電管のリードを嵌合し、導電部、取付部及び電極保持部を通じて、放電管に電力を供給することができる。よって、半田付け作業を省略して、放電管と電源装置との接続作業性を向上することができる。しかしながら、放電管のリードを電極保持部に嵌合する際に、リードに応力が加わり、リードとガラス管との間に割れ(クラック)が生じて、放電管内の放電用ガスが長時間にわたり漏洩するスローリークが発生した。特許文献1の電極保持部は、弾性を有する金属により形成された帯体により嵌合部を支持して、放電管のリードを嵌合部に嵌合する際の衝撃を緩和する。しかしながら、電極保持部により放電管のリードを直接支持する特許文献1の放電管保持部材では、リードに加わる応力を十分に低減できず、ガラス管の割れを完全に防止できなかった。
On the other hand,
下記特許文献2は、ガラス管の端部に嵌合される金属製のキャップを開示する。キャップの底部に形成された孔部に放電管のリードを挿通して、キャップとリードとを固着する。このようにすれば、上述したような電極保持部に形成された溝状の嵌合部にキャップを嵌合させることによって、キャップを通じて、放電管に電力を供給することができる。
The following
しかしながら、ガラス管の端部に金属製のキャップを嵌合して、キャップの内周面とガラス管の外周面とを密着させると、放電管を点灯したとき、キャップによってガラス管の端部が部分的に冷却される。よって、ガラス管内の水銀がガラス管の端部に集中して、放電管が長さ方向に均一な光を放出できず、放電管の寿命も低下した。
これに対し、径方向内側に突出する複数の凸部(ビード)をキャップに形成して、キャップとガラス管の端部との間に間隙を形成し、間隙の断熱作用によりキャップによるガラス管の部分的冷却を防止する方法が本出願人により考えられた。上記特許文献3は、径方向内側に突出する一対の傾斜凸部を有する口金スリーブを開示するが、目的が異なる。
また、上述のように、放電管をホルダに装着する際に、ガラス管の端部に設けたキャップを電極保持部の嵌合部に嵌合させると、キャップに外力が加わってガラス管からずれることがある。特に、キャップとガラス管との間に間隙を形成した場合には、キャップがガラス管からずれやすい。このように、キャップがガラス管からずれると、放電管のリードに応力が加わってガラス管にクラックが発生し易い。
However, when a metal cap is fitted to the end of the glass tube and the inner peripheral surface of the cap and the outer peripheral surface of the glass tube are brought into close contact with each other, when the discharge tube is turned on, the end of the glass tube is caused by the cap. Partially cooled. Therefore, mercury in the glass tube is concentrated on the end of the glass tube, the discharge tube cannot emit uniform light in the length direction, and the life of the discharge tube is also reduced.
On the other hand, a plurality of convex portions (beads) protruding radially inward are formed on the cap, a gap is formed between the cap and the end of the glass tube, and the glass tube by the cap is insulated by the heat insulating action of the gap. A method for preventing partial cooling was considered by the applicant. Although the said
Further, as described above, when the discharge tube is attached to the holder, when the cap provided at the end of the glass tube is fitted to the fitting portion of the electrode holding portion, an external force is applied to the cap and the glass tube is displaced. Sometimes. In particular, when a gap is formed between the cap and the glass tube, the cap is easily displaced from the glass tube. Thus, when the cap is displaced from the glass tube, stress is applied to the lead of the discharge tube, and cracks are likely to occur in the glass tube.
そこで、本発明は、キャップによるガラス管の部分的冷却を防止する放電管用コネクタ及びコネクタ付き放電管を提供することを目的とする。
また、本発明は、放電管のリードに応力が加わるのを抑制する放電管用コネクタ及びコネクタ付き放電管を提供することを目的とする。
Accordingly, an object of the present invention is to provide a discharge tube connector and a discharge tube with a connector that prevent partial cooling of the glass tube by the cap.
Another object of the present invention is to provide a connector for a discharge tube and a discharge tube with a connector that suppresses stress applied to the lead of the discharge tube.
本発明の放電管用コネクタは、放電管(20)を構成するガラス管(21)の端部(21a)に取り付けられる金属製の筒体(1)を備える。筒体(1)は、径方向内側に突出する複数の凸部(11)を備える。ガラス管(21)の端部(21a)に筒体(1)を取り付けたとき、ガラス管(21)の外周面(21b)に凸部(11)が当接する。凸部(11)により筒体(1)とガラス管(21)の端部(21a)との間に間隙が形成され、間隙の断熱作用により筒体(1)によるガラス管(21)の部分的冷却を防止して、放電管(20)の特性変動を抑制できる。
また、筒体(1)は、ガラス管(21)の外周面(21b)に凸部(11)を当接した状態で、ガラス管(21)の端部(21a)に保持されるので、放電管(20)をホルダに装着する際に、筒体(1)に外力が加わっても、筒体(1)がガラス管(21)からずれず、放電管(20)のリードに応力が加わるのを防止できる。
本発明の実施の形態の放電管用コネクタは、筒体(1)から延伸する帯状の導出部(2)と、導出部(2)の先端(2a)に形成され且つリード(22)に接続される接続部(3)とを備える。帯状に形成されて弾力性を有する導出部(2)及び接続部(3)は、筒体(1)から応力を受けた際に、容易に変形する。よって、筒体(1)に応力が生じた際に、筒体(1)からリード(22)に伝達される応力を導出部(2)を通じて緩和し、リード(22)とガラス管(21)との間に割れが生じるのを防止できる。電源装置に接続された金属製のホルダに放電管用コネクタの筒体(1)を取り付けて、電源装置からホルダ、筒体(1)、導出部(2)及び接続部(3)を通じて放電管(20)のリード(22)に電力を供給し、放電管(20)を点灯することができる。筒体(1)をホルダに取り付ける際に、筒体(1)に加わる機械的応力は、導出部(2)により緩和され、放電管(20)のリード(22)に大きな応力が伝達されない。
The discharge tube connector of the present invention includes a metal cylinder (1) attached to an end (21a) of a glass tube (21) constituting the discharge tube (20). The cylindrical body (1) includes a plurality of convex portions (11) projecting radially inward. When the cylindrical body (1) is attached to the end portion (21a) of the glass tube (21), the convex portion (11) comes into contact with the outer peripheral surface (21b) of the glass tube (21). A gap is formed between the cylindrical body (1) and the end portion (21a) of the glass tube (21) by the convex portion (11), and a portion of the glass tube (21) by the cylindrical body (1) by the heat insulating action of the gap. The characteristic fluctuation of the discharge tube (20) can be suppressed by preventing the static cooling.
Further, the cylindrical body (1) is held by the end (21a) of the glass tube (21) in a state where the convex portion (11) is in contact with the outer peripheral surface (21b) of the glass tube (21). When mounting the discharge tube (20) to the holder, even if an external force is applied to the tube (1), the tube (1) is not displaced from the glass tube (21), and stress is applied to the lead of the discharge tube (20). You can prevent it from joining.
The discharge tube connector of the embodiment of the present invention is formed in a strip-shaped lead-out portion (2) extending from the cylindrical body (1) and the tip (2a) of the lead-out portion (2) and connected to the lead (22). Connecting portion (3). The lead-out part (2) and the connection part (3) which are formed in a band shape and have elasticity are easily deformed when subjected to stress from the cylindrical body (1). Therefore, when stress is generated in the cylindrical body (1), the stress transmitted from the cylindrical body (1) to the lead (22) is relieved through the lead-out part (2), and the lead (22) and the glass tube (21) It is possible to prevent cracking between the two. Attach the discharge tube connector cylinder (1) to the metal holder connected to the power supply unit, and from the power supply unit through the holder, cylinder (1), lead-out part (2) and connection part (3) discharge tube ( Power can be supplied to the lead (22) of 20) to light the discharge tube (20). When the cylindrical body (1) is attached to the holder, the mechanical stress applied to the cylindrical body (1) is relaxed by the lead-out portion (2), and a large stress is not transmitted to the lead (22) of the discharge tube (20).
また、本発明のコネクタ付き放電管は、ガラス管(21)を有する放電管(20)と、放電管(20)に取り付けられるコネクタ(10)とを備える。コネクタ(10)は、ガラス管(21)の端部(21a)に取り付けられる金属製の筒体(1)を備える。筒体(1)は、径方向内側に突出する複数の凸部(11)を備え、ガラス管(21)の外周面(21b)に凸部(11)が当接する。 The discharge tube with connector of the present invention includes a discharge tube (20) having a glass tube (21) and a connector (10) attached to the discharge tube (20). The connector (10) includes a metal cylinder (1) attached to the end (21a) of the glass tube (21). The cylindrical body (1) includes a plurality of convex portions (11) protruding radially inward, and the convex portions (11) abut on the outer peripheral surface (21b) of the glass tube (21).
コネクタによるガラス管の部分的冷却を防止すると共に、放電管とコネクタとの組み立て時又は放電管の表示装置への組み込み時にコネクタから放電管のリードに加わる応力を緩和し、リードとガラス管との間に割れの発生を防止して、信頼性の高い放電管及び光源装置を得ることができる。 In addition to preventing partial cooling of the glass tube by the connector, the stress applied to the lead of the discharge tube from the connector when the discharge tube and the connector are assembled or when the discharge tube is installed in a display device is reduced. It is possible to obtain a highly reliable discharge tube and light source device by preventing the occurrence of cracks therebetween.
表示装置のバックライトに使用される冷陰極蛍光放電管に適用した本発明による放電管用コネクタ及びコネクタ付き放電管の実施の形態を図1〜図13について以下説明する。前記図面に示す放電管(20)は、図14に示す放電管と同一であり、同一の符号を付すと共に、説明を省略する。 Embodiments of a connector for a discharge tube and a discharge tube with a connector according to the present invention applied to a cold cathode fluorescent discharge tube used for a backlight of a display device will be described below with reference to FIGS. The discharge tube (20) shown in the drawing is the same as the discharge tube shown in FIG. 14, and is given the same reference numerals and description thereof is omitted.
図1に示すように、本発明による放電管用コネクタは、筒体(1)と、筒体(1)の一端(1a)から筒体(1)の軸方向外側に延伸する帯状の導出部(2)と、導出部(2)の先端(2a)から折曲して形成された接続部(3)とを備える。筒体(1)、導出部(2)及び接続部(3)は、燐青銅等の弾性に優れる金属により一体に形成され、ニッケルによりめっき処理される。筒体(1)は、図2に示すように、ガラス管(21)を筒体(1)内の所定の位置に保持すると共に、変形に対する機械的強度を増加するため、径方向内側に突出する複数の半球状の凸部(11)を有し、ガラス管(21)の端部(21a)に筒体(1)を装着したとき、筒体(1)とガラス管(21)の端部(21a)との間に間隙(12)を形成する。本実施の形態では、図2及び図3に示すように、筒体(1)の周方向及び長さ方向に各3つの凸部(11)を形成して、合計9つの凸部(11)を設けるが、凸部(11)の数、大きさ及び形状は、筒体(1)の大きさ等の条件により適宜に変更できる。筒体(1)は、合口部(17)を有する間欠環状に形成され、所定の径寸法から拡径させてガラス管(21)に装着したとき、縮径弾性力を有する。よって、筒体(1)は、ガラス管(21)の外周面(21b)に凸部(11)を当接した状態で、ガラス管(21)の端部(21a)に保持される。径方向内側に突出して筒体(1)と一体に形成されるストッパ(16)が筒体(1)の一端(1a)に設けられ、ガラス管(21)に筒体(1)を取り付けるとき、ガラス管(21)の端部(20a)がストッパ(16)に当接する。 As shown in FIG. 1, a discharge tube connector according to the present invention includes a tubular body (1) and a strip-shaped lead-out portion (1a) extending from the one end (1a) of the tubular body (1) outward in the axial direction of the tubular body (1). 2) and a connection portion (3) formed by bending from the tip (2a) of the lead-out portion (2). The cylindrical body (1), the lead-out portion (2) and the connection portion (3) are integrally formed of a metal having excellent elasticity such as phosphor bronze and plated with nickel. As shown in FIG. 2, the cylindrical body (1) holds the glass tube (21) in a predetermined position in the cylindrical body (1), and protrudes radially inward to increase the mechanical strength against deformation. When the cylindrical body (1) is attached to the end (21a) of the glass tube (21), the end of the cylindrical body (1) and the glass tube (21) A gap (12) is formed between the portion (21a). In the present embodiment, as shown in FIG. 2 and FIG. 3, three convex portions (11) are formed in the circumferential direction and the length direction of the cylindrical body (1), for a total of nine convex portions (11). However, the number, size, and shape of the protrusions (11) can be appropriately changed depending on conditions such as the size of the cylindrical body (1). The cylindrical body (1) is formed in an intermittent annular shape having an abutment portion (17), and has a reduced-diameter elastic force when it is expanded from a predetermined diameter and attached to the glass tube (21). Therefore, the cylindrical body (1) is held by the end (21a) of the glass tube (21) in a state where the convex portion (11) is in contact with the outer peripheral surface (21b) of the glass tube (21). A stopper (16) that protrudes radially inward and is integrally formed with the cylindrical body (1) is provided at one end (1a) of the cylindrical body (1), and the cylindrical body (1) is attached to the glass tube (21). The end (20a) of the glass tube (21) comes into contact with the stopper (16).
導出部(2)は、図4に示すように、筒体(1)及び接続部(3)に対して幅狭に形成され、筒体(1)の軸方向に延伸する帯状の平面形状を有している。このため、導出部(2)は、その延伸方向に対して垂直方向の断面図が小さく、可撓性を有しており、その上面方向又は下面方向に容易に撓む。本実施の形態では、導出部(2)の厚さは、接続部(3)と共に、筒体(1)の厚さと同一であるが、導出部(2)の幅及び長さは、導出部(2)に要求される可撓性の程度に応じて、適宜に決定される。図1及び図4に示すように、接続部(3)は、筒体(1)の中心軸(C1)の延長上に中心軸(C2)を有し且つ放電管(20)のリード(22)の断面積に対して大きな径を有する円形の貫通孔(13)を備える。ガラス管(21)の端部(21a)に筒体(1)を取り付けたとき、ガラス管(21)の端部(21a)から延伸するリード(22)が接続部(3)の貫通孔(13)内に配置される。貫通孔(13)の大きさは、接続部(3)の貫通孔(13)に放電管(20)のリード(22)を挿通する際の作業性及びリード(22)と接続部(3)とをろう材(5)により接続する際の作業性を考慮して、適宜に決定される。 As shown in FIG. 4, the lead-out part (2) is formed narrower than the cylindrical body (1) and the connecting part (3), and has a strip-like planar shape extending in the axial direction of the cylindrical body (1). Have. For this reason, the lead-out portion (2) has a small sectional view in the direction perpendicular to the extending direction, has flexibility, and is easily bent in the upper surface direction or the lower surface direction. In the present embodiment, the thickness of the lead-out part (2) is the same as the thickness of the cylindrical body (1) together with the connection part (3), but the width and length of the lead-out part (2) It is determined appropriately according to the degree of flexibility required in (2). As shown in FIGS. 1 and 4, the connecting portion (3) has a central axis (C 2 ) on the extension of the central axis (C 1 ) of the cylindrical body (1) and leads the discharge tube (20). A circular through hole (13) having a large diameter with respect to the cross-sectional area of (22) is provided. When the cylindrical body (1) is attached to the end (21a) of the glass tube (21), the lead (22) extending from the end (21a) of the glass tube (21) is a through-hole ( 13) is placed within. The size of the through hole (13) depends on the workability when inserting the lead (22) of the discharge tube (20) into the through hole (13) of the connection part (3) and the lead (22) and the connection part (3). It is determined as appropriate in consideration of workability when connecting the two with the brazing material (5).
帯状に形成されて弾力性及び可撓性を有する導出部(2)及び接続部(3)は、外力を受けて容易に変形するので、筒体(1)がガラス管(21)からずれたとき、導出部(2)及び接続部(3)が容易に撓み、リード(22)に外力が強く加わることが防止される。この結果、ガラス管(21)に割れ(クラック)が発生することを防止できる。また、径方向内側に突出する複数の凸部(11)を筒体(1)に形成して、筒体(1)とガラス管(21)の端部(21a)との間に間隙(12)を形成すると、間隙(12)の断熱作用により筒体(1)によるガラス管(21)の部分的冷却を防止して、放電管(20)の特性変動を抑制できる。 The lead-out part (2) and the connection part (3), which are formed in a band shape and have elasticity and flexibility, are easily deformed by receiving external force, so that the cylindrical body (1) is displaced from the glass tube (21). At this time, the lead-out part (2) and the connection part (3) are easily bent, and the external force is prevented from being strongly applied to the lead (22). As a result, it is possible to prevent the glass tube (21) from being cracked. Further, a plurality of convex portions (11) protruding radially inward are formed in the cylindrical body (1), and a gap (12) is formed between the cylindrical body (1) and the end portion (21a) of the glass tube (21). ) To prevent partial cooling of the glass tube (21) by the cylindrical body (1) due to the heat insulating action of the gap (12), thereby suppressing fluctuations in the characteristics of the discharge tube (20).
コネクタ(10)を製造する際に、図5に示すように、プレス成形により金属板から導出部(2)、接続部(3)及びストッパ(16)等が一体に形成された板部材(6)を形成する。次に、曲げ加工により板部材(6)を環状に曲げて、筒体(1)を形成し、接続部(3)及びストッパ(16)を折曲させて、図6に示すコネクタ(10)が形成される。放電管(20)にコネクタ(10)を取り付けて、コネクタ付き放電管(10,20)を組み立てるとき、図7(a)及び図7(b)に示すように、ガラス管(21)の端部(21a)にコネクタ(10)の筒体(1)を取り付け、導出部(2)を放電管(20)のリード(22)と並行に配置して、接続部(3)の貫通孔(13)内にリード(22)を挿通させる。このとき、ガラス管(21)の端部(20a)がストッパ(16)に当接するまで、筒体(1)の他端(1c)から放電管(20)を挿入する。ストッパ(16)は、筒体(1)内で放電管(20)の位置決めを行う。 When the connector (10) is manufactured, as shown in FIG. 5, a plate member (6) in which the lead-out portion (2), the connecting portion (3), the stopper (16) and the like are integrally formed from a metal plate by press molding. ). Next, the plate member (6) is bent into an annular shape by bending to form the cylindrical body (1), the connecting portion (3) and the stopper (16) are bent, and the connector (10) shown in FIG. Is formed. When the connector (10) is attached to the discharge tube (20) and the discharge tube with connector (10, 20) is assembled, as shown in FIGS. 7 (a) and 7 (b), the end of the glass tube (21) Attach the cylindrical body (1) of the connector (10) to the part (21a), arrange the lead-out part (2) in parallel with the lead (22) of the discharge tube (20), and connect the through hole ( 13) Insert the lead (22) into the inside. At this time, the discharge tube (20) is inserted from the other end (1c) of the cylindrical body (1) until the end (20a) of the glass tube (21) contacts the stopper (16). The stopper (16) positions the discharge tube (20) within the cylindrical body (1).
次に、接続部(3)とリード(22)とを半田等のろう材(5)により固着し、コネクタ(10)と放電管(20)のリード(22)とを電気的に接続する。図7(c)及び図7(d)に示すように、少なくとも、接続部(3)の貫通孔(13)とリード(22)の一部とを溶融したろう材(5)中に浸漬し、接続部(3)の貫通孔(13)の内部に付着したろう材(5)を冷却して、接続部(3)とリード(22)とを接続できる。従来では、放電管(20)のリード(22)とハーネス線とを手作業の半田付けにより接続したが、ガラス管(21)の端部(20a)に筒体(1)を取り付けた後に、接続部(3)の貫通孔(13)とリード(22)とを溶融したろう材(5)に浸漬し、冷却すれば、リード(22)とコネクタ(10)とを接続できるので、ろう付け作業が簡単化し、製造コストを低減することができる。 Next, the connecting portion (3) and the lead (22) are fixed by a brazing material (5) such as solder, and the connector (10) and the lead (22) of the discharge tube (20) are electrically connected. As shown in FIGS. 7 (c) and 7 (d), at least the through hole (13) of the connecting portion (3) and a part of the lead (22) are immersed in the molten brazing material (5). The brazing material (5) adhering to the inside of the through hole (13) of the connection portion (3) can be cooled to connect the connection portion (3) and the lead (22). Conventionally, the lead (22) of the discharge tube (20) and the harness wire were connected by manual soldering, but after attaching the cylindrical body (1) to the end (20a) of the glass tube (21), The lead (22) and the connector (10) can be connected by immersing the through hole (13) and the lead (22) of the connecting part (3) in the molten brazing material (5) and cooling, so brazing Work can be simplified and manufacturing costs can be reduced.
コネクタ付き放電管(10,20)を表示装置に組み込むとき、金属製のホルダ(30)を液晶パネルの背面で導光板に隣接して配置する。ホルダ(30)は、配線を通じて表示装置の電源装置に接続される。図8に示すように、ホルダ(30)は、支持板(31)と、支持板(31)と一体に且つ支持板(31)に対して垂直方向に延伸して形成された一対の板体(32)とを備え、支持板(31)は、図示しない表示装置に固定される。図9に示すように、コネクタ付き放電管(10,20)は、対向して設けられた二対の板体(32)の間に配置される。板体(32)は、コネクタ(10)の筒体(1)を挟持する湾曲面を有し、筒体(1)を押圧すると、板体(32)は、互いに離間する方向に移動し、その後、弾力性により回復してコネクタ付き放電管(10,20)を保持する。図示しないが、ガラス管(21)の両端部(21a)にコネクタ(10)が取り付けられる。ホルダ(30)の板体(32)により筒体(1)を挟持し、表示装置の電源装置からホルダ(30)、筒体(1)、導出部(2)及び接続部(3)を通じて放電管(20)のリード(22)に電力を供給して、放電管(20)を点灯することができる。ホルダ(30)により筒体(1)を挟持するとき、筒体(1)を通じてリード(22)に加わる外力は、導出部(2)及び接続部(3)により緩和され、放電管(20)のガラス管(21)に大きな応力が伝達されない。 When the discharge tubes with connectors (10, 20) are incorporated into the display device, the metal holder (30) is disposed adjacent to the light guide plate on the back surface of the liquid crystal panel. The holder (30) is connected to the power supply device of the display device through wiring. As shown in FIG. 8, the holder (30) is composed of a support plate (31) and a pair of plates formed integrally with the support plate (31) and extending in the vertical direction with respect to the support plate (31). (32), and the support plate (31) is fixed to a display device (not shown). As shown in FIG. 9, the discharge tube with connector (10, 20) is disposed between two pairs of plates (32) provided to face each other. The plate body (32) has a curved surface that sandwiches the cylindrical body (1) of the connector (10) .When the cylindrical body (1) is pressed, the plate body (32) moves in a direction away from each other, Then, it recovers by elasticity and hold | maintains the discharge tube (10, 20) with a connector. Although not shown, the connector (10) is attached to both ends (21a) of the glass tube (21). The cylindrical body (1) is sandwiched between the plate bodies (32) of the holder (30) and discharged from the power supply device of the display device through the holder (30), the cylindrical body (1), the lead-out section (2), and the connection section (3). Power can be supplied to the lead (22) of the tube (20) to light the discharge tube (20). When holding the cylinder (1) by the holder (30), the external force applied to the lead (22) through the cylinder (1) is alleviated by the lead-out part (2) and the connection part (3), and the discharge tube (20) A large stress is not transmitted to the glass tube (21).
本発明の実施の形態は、図1〜図9に示す実施の形態に限定されず、変更が可能である。例えば、図10に示すように、コネクタ(10)の導出部(2)は、複数の帯部材により形成してもよい。また、接続部(3)の貫通孔(13)は、円形に限定されず、角形に形成してもよい。図11に示すように、接続部(3)の先端部をY字形又はU字形に切り欠いた切欠部としてもよい。図12に示すように、導出部(2)の一部に折曲部(18)を形成してもよい。折曲部(18)は、自身の弾性により、筒体(1)と接続部(3)との間に伝達される応力をより緩和することができる。また、放電管(20)を点灯又は消灯したとき、熱膨張によりガラス管(21)が延伸又は収縮するが、放電管(20)の長さ方向に伸縮する折曲部(18)は、ガラス管(21)の延伸又は収縮分を吸収して、ガラス管(21)の延伸又は収縮によってガラス管(21)に加わる応力を軽減できる。特許文献1の電極保持部と同様に、図13に示すように、支持板(31)から垂直方向に折曲して形成される帯体(33)をホルダ(30)に形成してもよい。帯体(33)の先端部に形成される支持部(34)によりコネクタ(10)の導出部(2)又は接続部(3)を支持し、接続時の衝撃を緩和して、コネクタ(10)とホルダ(30)とを接続することができる。支持部(34)とコネクタ(10)の導出部(2)又は接続部(3)とをろう材により固着して、ホルダ(30)にコネクタ付き放電管(10,20)を固定できる。図示するコネクタ付き放電管(10,20)では、接続部(3)及びリード(22)は、表示装置に組み込む前にろう材(5)により固着されるが、表示装置に組み込んだ後にろう材(5)により固着してもよい。
The embodiment of the present invention is not limited to the embodiment shown in FIGS. 1 to 9 and can be changed. For example, as shown in FIG. 10, the lead-out portion (2) of the connector (10) may be formed of a plurality of band members. Further, the through hole (13) of the connecting portion (3) is not limited to a circle, and may be formed in a square shape. As shown in FIG. 11, it is good also as a notch part which notched the front-end | tip part of the connection part (3) in Y shape or U shape. As shown in FIG. 12, the bent portion (18) may be formed in a part of the lead-out portion (2). The bent portion (18) can further relieve the stress transmitted between the cylindrical body (1) and the connection portion (3) by its own elasticity. In addition, when the discharge tube (20) is turned on or off, the glass tube (21) is stretched or contracted due to thermal expansion, but the bent portion (18) that expands and contracts in the length direction of the discharge tube (20) By absorbing the stretch or shrinkage of the tube (21), the stress applied to the glass tube (21) due to the stretch or shrinkage of the glass tube (21) can be reduced. Similarly to the electrode holding part of
本発明は、例えば、液晶ディスプレイのバックライト等の光源装置に使用される冷陰極蛍光放電管に良好に適用できる。 The present invention can be suitably applied to, for example, a cold cathode fluorescent discharge tube used in a light source device such as a backlight of a liquid crystal display.
(1)・・筒体、 (1a)・・一端、 (2)・・導出部、 (2a)・・先端、 (3)・・接続部、 (10)・・コネクタ、 (11)・・凸部、 (13)・・貫通孔(切欠部)、 (16)・・ストッパ、 (18)・・折曲部、 (20)・・放電管、 (21)・・ガラス管、 (21a)・・端部、 (22)・・リード、 (23)・・閉鎖空間、 (24)・・電極、 (1) ・ ・ Cylinder, (1a) ・ ・ One end, (2) ・ ・ Leading part, (2a) ・ ・ Tip, (3) ・ ・ Connecting part, (10) ・ ・ Connector, (11) ・ ・Convex, (13) ・ ・ Through hole (notch), (16) ・ Stopper, (18) ・ Bending part, (20) ・ ・ Discharge tube, (21) ・ ・ Glass tube, (21a)・ ・ End, (22) ・ ・ Lead, (23) ・ ・ Closed space, (24) ・ ・ Electrode,
Claims (4)
前記筒体は、径方向内側に突出する複数の凸部を備え、
前記ガラス管の端部に前記筒体を取り付けたとき、前記ガラス管の外周面に前記凸部が当接することを特徴とする放電管用コネクタ。 A metal cylinder attached to the end of the glass tube constituting the discharge tube,
The cylindrical body includes a plurality of convex portions projecting radially inward,
The discharge tube connector according to claim 1, wherein when the cylindrical body is attached to an end portion of the glass tube, the convex portion comes into contact with an outer peripheral surface of the glass tube.
前記コネクタは、前記ガラス管の端部に取り付けられる金属製の筒体を備え、
前記筒体は、径方向内側に突出する複数の凸部を備え、
前記ガラス管の外周面に前記凸部が当接することを特徴とするコネクタ付き放電管。 A discharge tube having a glass tube, and a connector attached to the discharge tube,
The connector includes a metal cylinder attached to an end of the glass tube,
The cylindrical body includes a plurality of convex portions projecting radially inward,
The discharge tube with a connector, wherein the convex portion comes into contact with an outer peripheral surface of the glass tube.
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