JP5008754B2 - Tube fluorescent lamp molding equipment - Google Patents

Tube fluorescent lamp molding equipment Download PDF

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JP5008754B2
JP5008754B2 JP2010159312A JP2010159312A JP5008754B2 JP 5008754 B2 JP5008754 B2 JP 5008754B2 JP 2010159312 A JP2010159312 A JP 2010159312A JP 2010159312 A JP2010159312 A JP 2010159312A JP 5008754 B2 JP5008754 B2 JP 5008754B2
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fluorescent lamp
core
cold cathode
cathode fluorescent
housing
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JP2012022864A (en
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慶之 水谷
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CKD Corp
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Priority to TW099142021A priority patent/TWI399788B/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Abstract

The invention relates to a forming apparatus of a tube-shaped fluorescent lamp capable of seeking for improvement of productivity. The forming apparatus forming a straight-tube-shaped cold cathode tube shaped fluorescent lamp into a dual spiral shape comprises: a heating furnace provided with a housing and a heating device, the housing is provided with an internal space capable of accommodating the cold cathode tube shaped fluorescent lamp, the heating device can make the internal space be in a specified high-temperature environment; a roll core capable of winding the cold cathode tube shaped fluorescent lamp accommodated in the internal space at the periphery of the main body part; a driving device provided with functions of making the roll core rotate, and making the core roll in displacement in the axial direction of the rotation. In addition, a first opening part is formed in the housing, at the stage before coiling in all zones in the length direction of the cold cathode tube shaped fluorescent lamp, the part coiled on the roll core in the cold cathode tube shaped fluorescent lamp and the part of the cold cathode tube shaped fluorescent lamp winded in the roll core are successively made to be led out from the first opening part to the external of the housing.

Description

本発明は、冷陰極蛍光灯等の管形蛍光灯を螺旋形状に成形する管形蛍光灯の成形装置に関するものである。   The present invention relates to a tubular fluorescent lamp forming apparatus for forming a tubular fluorescent lamp such as a cold cathode fluorescent lamp into a spiral shape.

従来、冷陰極蛍光灯等の真直ぐな円筒状（直管状）のガラス管を有する管形蛍光灯を螺旋形状（２重螺旋形状）に成形する技術がある。例えば、円柱状の本体部と、本体部の一端部側に形成された溝部とを備える成形冶具に対し、管形蛍光灯を加熱してから長手方向中央部を前記溝部に係止させるとともに前記本体部の周りに巻き付けることで、２重螺旋形状の管形蛍光灯が得られることとなる（例えば、特許文献１、２参照。）。また、一般に、螺旋形状に成形された管形蛍光灯は、その端部に点灯回路を内蔵した口金が取付けられ、電球に代替して室内の照明等に用いられる。   2. Description of the Related Art Conventionally, there is a technique for forming a tubular fluorescent lamp having a straight cylindrical (straight tubular) glass tube such as a cold cathode fluorescent lamp into a spiral shape (double spiral shape). For example, for a forming jig provided with a cylindrical main body part and a groove part formed on one end part side of the main body part, the tube-shaped fluorescent lamp is heated and then the central part in the longitudinal direction is locked to the groove part. By wrapping around the main body, a double spiral tubular fluorescent lamp is obtained (see, for example, Patent Documents 1 and 2). In general, a tube-shaped fluorescent lamp formed into a spiral shape has a base with a built-in lighting circuit at the end thereof, and is used for indoor lighting or the like instead of a light bulb.

特開２００３−１７３７６０号公報JP 2003-173760 A 特開２０１０−４０２８４号公報JP 2010-40284 A

ところで、特許文献１に記載の技術においては、加熱炉で加熱された管形蛍光灯を加熱炉から取出した後に、螺旋形状への成形が行われる。この場合、管形蛍光灯が加熱炉から取出されることで管形蛍光灯の温度が低下し、次第に硬化されていくため、好適な成形が困難なものとなるおそれがある。さらに、管形蛍光灯を加熱炉から取出した後も、成形が完了するまでは成形可能な温度を保てるように、加熱炉にて管形蛍光灯をより高い温度に加熱することが考えられる。しかしながら、この場合には、管形蛍光灯が軟化し過ぎてしまい、成形が困難なものとなってしまうことが懸念される。特に、管形蛍光灯の内部空間は負圧状態となっているため、管形蛍光灯が変形してしまうおそれがある。   By the way, in the technique of patent document 1, after taking out the tubular fluorescent lamp heated with the heating furnace from a heating furnace, shaping | molding to a helical shape is performed. In this case, since the tube fluorescent lamp is taken out of the heating furnace, the temperature of the tube fluorescent lamp is lowered and gradually cured, so that there is a possibility that suitable molding becomes difficult. Furthermore, it is conceivable that the tubular fluorescent lamp is heated to a higher temperature in the heating furnace so that the moldable temperature can be maintained until the molding is completed even after the tubular fluorescent lamp is taken out from the heating furnace. However, in this case, there is a concern that the tubular fluorescent lamp will be too soft and difficult to mold. In particular, since the internal space of the tube fluorescent lamp is in a negative pressure state, the tube fluorescent lamp may be deformed.

また、特許文献２には、管形蛍光灯を加熱炉内にて螺旋形状に成形する技術が開示されている。しかしながら、加熱炉内にて管形蛍光灯を曲げ成形する場合には、加熱炉から管形蛍光灯を取出して曲げ成形する場合に比べ、管形蛍光灯の加熱を開始してから管形蛍光灯の冷却を開始するまでの間の時間が長くなる。従って、後続の工程が連鎖的に遅れ、結果的に、螺旋形状の管形蛍光灯に電子部品等が装着された製品を得られるまでにより多くの時間を要してしまうこととなり、生産性の低下等を招くおそれがある。   Patent Document 2 discloses a technique for forming a tubular fluorescent lamp into a spiral shape in a heating furnace. However, when bending a tube fluorescent lamp in a heating furnace, compared to when bending the tube fluorescent lamp from the heating furnace, the tube fluorescent lamp starts to be heated after being started. The time until the lamp starts to cool becomes longer. Therefore, subsequent processes are delayed in a chain, and as a result, it takes more time to obtain a product in which electronic parts are mounted on a helical tube fluorescent lamp, which increases productivity. There is a risk of lowering.

本発明は上記問題点を解決するためになされたものであって、その目的は、生産性の向上を図ることのできる管形蛍光灯の成形装置を提供することにある。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a tubular fluorescent lamp forming apparatus capable of improving productivity.

以下、上記目的等を解決するのに適した各手段につき項分けして説明する。なお、必要に応じて対応する手段に特有の作用効果等を付記する。   In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to a corresponding means are added as needed.

手段１．直管状の管形蛍光灯を２重螺旋形状に成形する管形蛍光灯の成形装置において、
前記管形蛍光灯を収容可能な内部空間を有するハウジング、及び、前記内部空間を所定の高温環境とすることができる加熱手段を具備する加熱炉と、
外周面が円柱状をなす本体部、及び、前記本体部の一端部において前記管形蛍光灯の長手方向中央部を係止可能な係止部を備え、前記管形蛍光灯を前記本体部の外周に巻付け可能な巻芯と、
前記巻芯を回転させる機能、及び、前記巻芯を前記回転の軸方向において変位させる機能を有する駆動手段とを備え、
前記内部空間に収容された前記管形蛍光灯を前記係止部で係止した状態で、前記巻芯を回転させつつ前記回転の軸方向において前記係止部が先頭となるようにして前記巻芯を変位させることで、前記管形蛍光灯が前記巻芯に巻き取られるよう構成し、
前記ハウジングには、前記管形蛍光灯のうち前記巻芯に巻き取られた部位、及び、前記巻芯のうち前記管形蛍光灯が巻き付けられた部位を、前記管形蛍光灯の長手方向全域の巻取りが完了する前の段階から、順次前記ハウジングの外部に導出させることのできる導出孔が形成されていることを特徴とする管形蛍光灯の成形装置。 Means 1. In a tubular fluorescent lamp forming apparatus for forming a straight tubular fluorescent lamp into a double spiral shape,
A housing having an internal space in which the tubular fluorescent lamp can be accommodated, and a heating furnace including a heating means capable of setting the internal space to a predetermined high temperature environment;
A main body having a cylindrical outer peripheral surface, and a locking portion capable of locking a central portion in the longitudinal direction of the tubular fluorescent lamp at one end of the main body. A core that can be wound around the outer periphery;
A drive means having a function of rotating the winding core and a function of displacing the winding core in the axial direction of the rotation;
In a state where the tubular fluorescent lamp accommodated in the internal space is locked by the locking portion, the winding portion is rotated so that the locking portion is at the head in the axial direction of the rotation while rotating the winding core. By displacing the core, the tubular fluorescent lamp is configured to be wound around the core,
In the housing, a portion of the tubular fluorescent lamp wound around the winding core and a portion of the winding core around which the tubular fluorescent lamp is wound are arranged in the entire longitudinal direction of the tubular fluorescent lamp. An apparatus for forming a tubular fluorescent lamp is characterized in that a lead-out hole that can be led out to the outside of the housing sequentially is formed from the stage before winding of the tube is completed.

手段１によれば、管形蛍光灯の成形に際し、管形蛍光灯全体の成形（巻取り）が完了する前の段階であっても、管形蛍光灯のうち巻芯に巻き取られた部位から順次導出孔を介してハウジングの外部に導出されていく。このため、管形蛍光灯のうち成形を終えた部位から順次冷却が開始されることとなる。従って、加熱炉内において管形蛍光灯の成形が完了してから管形蛍光灯の冷却を開始する場合に比べ、冷却工程をいち早く開始することができる。結果として、生産効率の向上等を図ることができる。また、加熱炉内で冷却を行う場合、或いは、加熱炉を型開きのように大きく開いて管形蛍光灯を取出す場合には、加熱炉の内部空間の温度が低下するため、次の管形蛍光灯を成形するべく内部空間を再度高温環境とするまでに比較的多くの時間を要してしまう。この点、本手段では、導出孔を介して管形蛍光灯を加熱炉から外部に導出することで管形蛍光灯を冷却する構成であることから、かかる不具合を回避することができる。   According to the means 1, when the tube fluorescent lamp is formed, the portion of the tube fluorescent lamp wound around the core even before the entire tube fluorescent lamp is completely formed (wound up). Are sequentially led out of the housing through the lead-out holes. For this reason, cooling will be started sequentially from the site | part which finished shaping | molding among tubular fluorescent lamps. Therefore, the cooling process can be started earlier than in the case where the cooling of the tube fluorescent lamp is started after the forming of the tube fluorescent lamp is completed in the heating furnace. As a result, the production efficiency can be improved. In addition, when cooling in the heating furnace, or when taking out the tube fluorescent lamp by opening the heating furnace wide like a mold opening, the temperature of the internal space of the heating furnace decreases, so the following tube shape It takes a relatively long time to make the internal space into a high temperature environment again in order to form a fluorescent lamp. In this respect, the present means can avoid such inconvenience because the tube fluorescent lamp is cooled by leading the tube fluorescent lamp out of the heating furnace through the lead-out hole.

また、巻芯の外周に管形蛍光灯が巻き付けられることで行われる管形蛍光灯の成形は加熱炉の内部空間にて行われるため、管形蛍光灯の成形を最初から最後まで一定の温度環境下で行うことができる。従って、例えば、管形蛍光灯の成形を加熱炉の外部で行う場合のように、成形の途中で管形蛍光灯の温度が大きく変化することに起因して、成形が困難になってしまうといった事態を回避することができる。さらに、管形蛍光灯の成形を加熱炉の内部で行うので、過度に管形蛍光灯を加熱しなくても好適に成形を行うことができる。従って、管形蛍光灯が軟化し過ぎてしまい、管形蛍光灯が歪んでしまうといった事態を回避することができる上、冷却に要する時間の短縮、省エネルギー化等を図ることができる。   In addition, since the tube fluorescent lamp is formed by winding the tube fluorescent lamp around the outer periphery of the winding core, the tube fluorescent lamp is molded from the beginning to the end at a constant temperature. Can be done in the environment. Therefore, for example, when the tube fluorescent lamp is molded outside the heating furnace, it becomes difficult to mold due to a large change in the temperature of the tube fluorescent lamp during the molding. The situation can be avoided. Furthermore, since the tubular fluorescent lamp is molded inside the heating furnace, it can be suitably molded without excessively heating the tubular fluorescent lamp. Therefore, it is possible to avoid a situation in which the tube fluorescent lamp is excessively softened and the tube fluorescent lamp is distorted, and it is possible to shorten the time required for cooling and save energy.

手段２．前記導出孔は前記ハウジングの下壁部に形成されていることを特徴とする手段１に記載の管形蛍光灯の成形装置。   Mean 2. 2. The tube fluorescent lamp forming apparatus according to claim 1, wherein the lead-out hole is formed in a lower wall portion of the housing.

手段２によれば、導出孔がハウジングの下壁部に形成されているため、例えば、導出孔がハウジングの上壁部や側壁部に形成される場合に比べ、加熱炉の内部空間の熱を外部に逃げ難くさせることができる。従って、導出孔を形成することに起因する内部空間の熱損失を抑制することができ、省エネルギー化等を図ることができる。さらに、加熱炉の熱が導出孔から外部に逃げ難くなっていることにより、導出孔を挟んで加熱炉の内部と外部との間の温度差を大きくすることができる。すなわち、管形蛍光灯を導出孔から外部に導出したのにもかかわらず、導出孔から外部に逃げた熱によって管形蛍光灯の冷却が進行し難くなってしまうといった事態を抑止することができる。従って、導出孔から外部に導出された直後から管形蛍光灯の冷却を好適に進行させることができる。   According to the means 2, since the lead-out hole is formed in the lower wall portion of the housing, for example, compared with the case where the lead-out hole is formed in the upper wall portion or the side wall portion of the housing, the heat in the internal space of the heating furnace is reduced. It can be made difficult to escape to the outside. Therefore, heat loss in the internal space due to the formation of the outlet hole can be suppressed, and energy saving can be achieved. Furthermore, since the heat of the heating furnace is difficult to escape from the outlet hole to the outside, the temperature difference between the inside and the outside of the heating furnace can be increased across the outlet hole. That is, it is possible to suppress a situation in which the cooling of the tube fluorescent lamp becomes difficult to proceed due to the heat escaped to the outside from the lead-out hole even though the tube fluorescent lamp is led out from the lead-out hole. . Therefore, the cooling of the tube fluorescent lamp can be suitably advanced immediately after being led out from the lead-out hole.

手段３．前記巻芯には自身を加熱する巻芯加熱手段が設けられていることを特徴とする手段１又は２に記載の管形蛍光灯の成形装置。   Means 3. 3. The tube fluorescent lamp forming apparatus according to means 1 or 2, wherein the core is provided with core heating means for heating itself.

手段３によれば、巻き取られた管形蛍光灯とともに加熱炉の外部に導出されることで冷却されてしまう巻芯の温度を、巻芯加熱手段によって比較的迅速に管形蛍光灯の成形に適した温度にまで上昇させることができる。従って、次の管形蛍光灯の成形を開始するまでの時間を短縮することができ、結果として、生産性の向上等を図ることができる。   According to the means 3, the temperature of the core that is cooled by being led out of the heating furnace together with the wound tube fluorescent lamp is formed into the tube fluorescent lamp relatively quickly by the core heating means. The temperature can be raised to a suitable temperature. Therefore, it is possible to shorten the time until the start of forming the next tubular fluorescent lamp, and as a result, it is possible to improve productivity.

手段４．前記導出孔から導出された前記管形蛍光灯を保持する保持手段を備え、
前記保持手段は、２重螺旋形状に成形された前記管形蛍光灯全体が前記導出孔を介して前記ハウジングの外部に導出された後、前記管形蛍光灯のうち前記導出孔からの導出方向先端部側を保持することを特徴とする手段１乃至３のいずれかに記載の管形蛍光灯の成形装置。 Means 4. Holding means for holding the tube-shaped fluorescent lamp led out from the lead-out hole;
The holding means is configured such that after the entire tube-shaped fluorescent lamp formed in a double spiral shape is led out of the housing through the lead-out hole, the lead-out direction from the lead-out hole in the tube-shaped fluorescent lamp The tube fluorescent lamp forming apparatus according to any one of means 1 to 3, wherein the tip end side is held.

手段４によれば、加熱炉の外部に導出された２重螺旋形状の管形蛍光灯を保持手段によって保持することによって、比較的スムースに２重螺旋形状の管形蛍光灯から巻芯を抜き取ることができる。また、保持手段は、管形蛍光灯のうち加熱炉から外部に先行して導出されることで冷却が進行している部位を保持する構成となっている。従って、管形蛍光灯の変形等を招くことなく管形蛍光灯をしっかりと保持することができ、巻芯の管形蛍光灯からの抜き取り作業等を比較的スムースに行うことができる。   According to the means 4, by holding the double spiral tubular fluorescent lamp led out of the heating furnace by the holding means, the winding core is withdrawn relatively smoothly from the double spiral tubular fluorescent lamp. be able to. In addition, the holding means is configured to hold a portion where the cooling is progressing by being led out from the heating furnace to the outside in the tubular fluorescent lamp. Therefore, the tubular fluorescent lamp can be firmly held without causing deformation of the tubular fluorescent lamp, and the operation of extracting the core from the tubular fluorescent lamp can be performed relatively smoothly.

手段５．前記巻芯の近傍において、前記ハウジングの内側面から前記内部空間に突出するガイド突起を備え、
前記巻芯の前記係止部に前記管形蛍光灯が係止された状態で前記巻芯が回転しつつ当該回転の軸方向に沿って変位することで、前記管形蛍光灯は、前記巻芯と前記ガイド突起との間に引き込まれるとともに、前記ガイド突起に圧接して曲げ加工されつつ、前記巻芯の外周に巻き付けられることを特徴とする手段１乃至４のいずれかに記載の管形蛍光灯の成形装置。 Means 5. In the vicinity of the core, a guide protrusion that protrudes from the inner surface of the housing into the internal space,
The tube fluorescent lamp is displaced in the axial direction of the rotation while rotating the core while the tube fluorescent lamp is locked to the locking portion of the core. The tube shape according to any one of means 1 to 4, wherein the tube shape is drawn between a core and the guide protrusion, and is wound around the outer periphery of the core while being bent while being pressed against the guide protrusion. Fluorescent lamp forming device.

手段５によれば、巻芯の回転とともにガイド突起と巻芯との間に引き込まれる管形蛍光灯は、当該管形蛍光灯に接触するガイド突起によって曲げ加工され、巻芯の外周に巻き付けられていく。これにより、管形蛍光灯の巻芯への巻き付けを行う際に、管形蛍光灯の長手方向両端部を保持して管形蛍光灯を緊張状態としなくても、より確実に管形蛍光灯を巻芯に巻き付けることができる。従って、管形蛍光灯の巻芯への巻き付けに際し、管形蛍光灯の長手方向両端部を保持するような構成に比べ、構成の簡素化、製造作業性の向上等を図ることができる。   According to the means 5, the tube fluorescent lamp drawn between the guide projection and the core with the rotation of the core is bent by the guide projection contacting the tube fluorescent lamp and wound around the outer periphery of the core. To go. As a result, when the tube fluorescent lamp is wound around the core, the tube fluorescent lamp can be more reliably secured without holding both ends in the longitudinal direction of the tube fluorescent lamp and putting the tube fluorescent lamp in a tension state. Can be wound around the core. Therefore, when the tube fluorescent lamp is wound around the core, the configuration can be simplified and the manufacturing workability can be improved as compared with the configuration in which both ends in the longitudinal direction of the tube fluorescent lamp are held.

２重螺旋形状に成形された冷陰極蛍光灯の斜視図である。It is a perspective view of the cold cathode fluorescent lamp shape | molded by the double spiral shape. 巻芯が待機位置にあるときの成形装置を説明するための図であって、（ａ）は断面模式図であり、（ｂ）は加熱炉を下方から見たときの底面模式図である。It is a figure for demonstrating a shaping | molding apparatus when a core is in a standby position, Comprising: (a) is a cross-sectional schematic diagram, (b) is a bottom schematic diagram when a heating furnace is seen from the downward direction. 巻芯が準備位置にあるときの成形装置を説明するための図であって、（ａ）は断面模式図であり、（ｂ）は加熱炉を下方から見たときの底面模式図である。It is a figure for demonstrating a shaping | molding apparatus when a core is in a preparation position, Comprising: (a) is a cross-sectional schematic diagram, (b) is a bottom schematic diagram when a heating furnace is seen from the downward direction. 巻芯に冷陰極蛍光灯を巻き付けている状態の成形装置を説明するための図であって、（ａ）は断面模式図であり、（ｂ）は加熱炉を下方から見たときの底面模式図である。It is a figure for demonstrating the shaping | molding apparatus of the state which winds the cold cathode fluorescent lamp around a winding core, (a) is a cross-sectional schematic diagram, (b) is a bottom face model when a heating furnace is seen from the downward direction. FIG. 巻芯が巻取り完了位置にあるときの成形装置を説明するための図であって、（ａ）は断面模式図であり、（ｂ）は加熱炉を下方から見たときの底面模式図である。It is a figure for demonstrating a shaping | molding apparatus when a winding core exists in a winding completion position, Comprising: (a) is a cross-sectional schematic diagram, (b) is a bottom schematic diagram when seeing a heating furnace from the downward direction. is there. 巻芯が導出完了位置にあるときの成形装置を説明するための図であって、（ａ）は断面模式図であり、（ｂ）は加熱炉を下方から見たときの底面模式図である。It is a figure for demonstrating a shaping | molding apparatus when a winding core exists in an extraction completion position, (a) is a cross-sectional schematic diagram, (b) is a bottom schematic diagram when a heating furnace is seen from the downward direction. . 巻芯が抜取り完了位置にあるときの成形装置を説明するための断面模式図である。It is a cross-sectional schematic diagram for demonstrating a shaping | molding apparatus when a winding core exists in the extraction completion position. 巻芯が待機位置にあり、支持装置が非収容状態にあるときの成形装置を説明するための断面模式図である。It is a cross-sectional schematic diagram for demonstrating a shaping | molding apparatus when a winding core exists in a stand-by position and a support apparatus is in a non-accommodating state.

以下に、一実施形態について図面を参照しつつ説明する。図１に示すように、管形蛍光灯としての冷陰極蛍光灯１（ＣＣＦＬ）は、ガラス管よりなるバルブ２と、バルブ２の両端においてそれぞれ封止状態で設けられたマウント３とを備えている。バルブ２の内壁面には蛍光体層が設けられているとともに、バルブ２には不活性ガス及び水銀蒸気が封入されている。さらに、各マウント３は、電極部（図示略）と、電極部から延びるリード４と、リード４の基端部側に設けられたガラス製のビード（図示略）とを備えている。   Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1, a cold cathode fluorescent lamp 1 (CCFL) as a tube-type fluorescent lamp includes a bulb 2 made of a glass tube and a mount 3 provided in a sealed state at both ends of the bulb 2. Yes. A phosphor layer is provided on the inner wall surface of the bulb 2, and an inert gas and mercury vapor are enclosed in the bulb 2. Furthermore, each mount 3 includes an electrode part (not shown), a lead 4 extending from the electrode part, and a glass bead (not shown) provided on the base end side of the lead 4.

また、図１に示す冷陰極蛍光灯１は、バルブ２が２重螺旋形状に成形されている。但し、バルブ２はマウント３の取付前に螺旋形状に成形されるのではなく、真直ぐな円筒状（直管状）のバルブ２を備えた冷陰極蛍光灯１の製造後に、後述する成形装置１１を用いて当該冷陰極蛍光灯１のバルブ２を変形させることで螺旋形状に成形される。尚、図示は省略するが、２重螺旋形状に形成された冷陰極蛍光灯１にはインバータ回路を内蔵した口金が取付けられ、これにより、電球用のソケットに装着して使用できる電球形蛍光灯が構成される。   In the cold cathode fluorescent lamp 1 shown in FIG. 1, the bulb 2 is formed in a double spiral shape. However, the bulb 2 is not formed into a spiral shape before the mount 3 is attached, but after the cold cathode fluorescent lamp 1 having the straight cylindrical (straight tube) bulb 2 is manufactured, a molding device 11 described later is used. The bulb 2 of the cold cathode fluorescent lamp 1 is deformed and formed into a spiral shape. Although not shown in the drawings, a cold cathode fluorescent lamp 1 formed in a double spiral shape is provided with a base having an inverter circuit, so that it can be used by being mounted on a socket for a light bulb. Is configured.

次に、直管状の冷陰極蛍光灯１を上記２重螺旋形状に成形するための成形装置１１について、図２等を参照して説明する。尚、加熱炉１２の断面等を示す図２（ａ）等において、巻芯４１及び冷陰極蛍光灯１に関しては、便宜上、断面ではなく側面から見たものとして示す。図２等に示すように、成形装置１１は、冷陰極蛍光灯１を加熱する加熱炉１２と、加熱炉１２の内部において冷陰極蛍光灯１を支持する支持機構１３と、加熱炉１２で加熱された冷陰極蛍光灯１を２重螺旋形状に成形する巻取り装置１４とを備えている。   Next, the shaping | molding apparatus 11 for shape | molding the straight tubular cold cathode fluorescent lamp 1 in the said double spiral shape is demonstrated with reference to FIG. 2A showing the cross section of the heating furnace 12 and the like, the core 41 and the cold cathode fluorescent lamp 1 are shown as viewed from the side instead of the cross section for convenience. As shown in FIG. 2 and the like, the forming apparatus 11 includes a heating furnace 12 that heats the cold cathode fluorescent lamp 1, a support mechanism 13 that supports the cold cathode fluorescent lamp 1 inside the heating furnace 12, and heating by the heating furnace 12. And a winding device 14 for forming the cold cathode fluorescent lamp 1 into a double spiral shape.

加熱炉１２は、冷陰極蛍光灯１を収容可能な内部空間１９を有する左右に長い略直方体箱状のハウジング１８と、前記内部空間１９を所定の高温環境とすることができる図示しない加熱装置（加熱手段）とを備えている。ハウジング１８の下壁部２１には、ハウジング１８の長手方向中央部において略円形状の第１開口部２２が形成されるとともに、第１開口部２２の中央部から、ハウジング１８の長手方向に沿って、ハウジング１８の長手方向両端縁にまで延在する第２開口部２３が形成されている。本実施形態では、第１開口部２２が導出孔を構成する。   The heating furnace 12 includes a substantially rectangular parallelepiped box-shaped housing 18 having an internal space 19 in which the cold cathode fluorescent lamp 1 can be accommodated, and a heating device (not shown) that can make the internal space 19 a predetermined high-temperature environment. Heating means). In the lower wall portion 21 of the housing 18, a substantially circular first opening 22 is formed at the center in the longitudinal direction of the housing 18, and from the center of the first opening 22 along the longitudinal direction of the housing 18. Thus, second openings 23 extending to both longitudinal edges of the housing 18 are formed. In the present embodiment, the first opening 22 constitutes a lead-out hole.

また、ハウジング１８の長手方向両端部において内部空間１９を閉塞するようにして形成された端壁部２４には、第２開口部２３の端縁から上方に延在する端部開口部２５が形成されている。本実施形態では、ハウジング１８の長手方向における長さよりも、直管状の（成形前の）冷陰極蛍光灯１の長さの方が長くなっており、直管状の冷陰極蛍光灯１をハウジング１８の内部空間１９に設置すると、冷陰極蛍光灯１の両端部が各端壁部２４に形成された端部開口部２５からそれぞれハウジング１８の外部に突出するようになっている。   Further, an end opening 25 extending upward from the edge of the second opening 23 is formed in the end wall 24 formed so as to close the internal space 19 at both longitudinal ends of the housing 18. Has been. In the present embodiment, the length of the straight tubular (before forming) cold cathode fluorescent lamp 1 is longer than the length in the longitudinal direction of the housing 18, and the straight tubular cold cathode fluorescent lamp 1 is placed in the housing 18. When installed in the internal space 19, both end portions of the cold cathode fluorescent lamp 1 protrude from the end openings 25 formed in the end wall portions 24 to the outside of the housing 18.

ハウジング１８の上壁部２６には、ハウジング１８の長手方向中央部において円形状の上部開口部２７が形成されている。当該上部開口部２７の外周縁及び前記第１開口部２２の外周縁は、加熱炉１２を下方から見た場合に同心円となっている。また、ハウジング１８の上壁部２６には、上部開口部２７に近接して、上壁部２６の下面から下方に突出する円柱状のガイド突起２８が設けられている（図２（ｂ）等参照）。ガイド突起２８は、上部開口部２７の中央部を中心とする相対位置において一対で設けられ、本実施形態では、ハウジング１８の長手方向に対して直交する方向において、上部開口部２７を挟んで対向するようにして設けられている。   A circular upper opening 27 is formed in the upper wall portion 26 of the housing 18 at the center in the longitudinal direction of the housing 18. The outer peripheral edge of the upper opening 27 and the outer peripheral edge of the first opening 22 are concentric when the heating furnace 12 is viewed from below. The upper wall portion 26 of the housing 18 is provided with a columnar guide protrusion 28 that protrudes downward from the lower surface of the upper wall portion 26 in the vicinity of the upper opening 27 (FIG. 2B, etc.). reference). A pair of guide protrusions 28 are provided at a relative position centered on the central portion of the upper opening 27. In this embodiment, the guide protrusions 28 face each other across the upper opening 27 in a direction orthogonal to the longitudinal direction of the housing 18. It is provided as you do.

支持機構１３は、第２開口部２３に挿通される支持片部３１と、支持片部３１を上下に変位させる図示しない支持駆動装置とを備えている。支持片部３１の上端部には、上方に開口する略Ｕ字状をなし、内側に冷陰極蛍光灯１を挿通可能な位置決め部３３が形成されている。また、支持機構１３は、支持駆動装置の駆動によって、位置決め部３３がハウジング１８の下方に位置する非収容状態と、第２開口部２３を介して位置決め部３３が加熱炉１２の内部空間１９に位置する収容状態とに状態変化可能に構成されている。   The support mechanism 13 includes a support piece portion 31 inserted through the second opening 23 and a support drive device (not shown) that vertically moves the support piece portion 31. At the upper end portion of the support piece portion 31, a positioning portion 33 is formed which has a substantially U-shape opening upward and into which the cold cathode fluorescent lamp 1 can be inserted. Further, the support mechanism 13 is driven by the support driving device so that the positioning unit 33 is located in the inner space 19 of the heating furnace 12 via the second opening 23 and the non-accommodating state where the positioning unit 33 is positioned below the housing 18. It is comprised so that a state change is possible to the accommodation state located.

支持片部３１は、加熱炉１２の長手方向に沿って複数設けられており、本実施形態では、第１開口部２２の左右に延在する各第２開口部２３に対応してそれぞれ３つずつ設けられている。さらに、支持駆動装置の駆動に伴い、これら全ての支持片部３１が同調して上下動する構成となっており、全ての支持片部３１の位置決め部３３の高さ位置は常に揃っている。これにより、非収容状態にある支持機構１３の各支持片部３１の位置決め部３３に対して直管状の冷陰極蛍光灯１を設置してから、支持機構１３を収容状態とすることで、冷陰極蛍光灯１をハウジング１８に収容するとともに、ハウジング１８の内部空間１９において冷陰極蛍光灯１の支持（位置決め）を行えるようになっている。   A plurality of support pieces 31 are provided along the longitudinal direction of the heating furnace 12. In the present embodiment, three support pieces 31 are provided corresponding to the second openings 23 extending to the left and right of the first openings 22. It is provided one by one. Further, all the support piece portions 31 are moved up and down in synchronization with the driving of the support drive device, and the height positions of the positioning portions 33 of all the support piece portions 31 are always aligned. Thereby, after installing the straight tubular cold cathode fluorescent lamp 1 with respect to the positioning part 33 of each support piece part 31 of the support mechanism 13 in the non-accommodating state, the support mechanism 13 is placed in the accommodated state, so that The cathode fluorescent lamp 1 is accommodated in the housing 18, and the cold cathode fluorescent lamp 1 can be supported (positioned) in the internal space 19 of the housing 18.

また、本実施形態では、上下方向において、位置決め部３３に支持された直管状の冷陰極蛍光灯１と、ハウジング１８の下壁部２１の下面との間の距離は、２重螺旋形状に成形された冷陰極蛍光灯１の高さ（軸線方向における高さ）の１／２の長さよりも短くなっている。さらに、ハウジング１８の上壁部２６において形成されたガイド突起２８の下端部は、位置決め部３３に支持された直管状の冷陰極蛍光灯１の下縁部よりも若干下方に位置している。   In the present embodiment, in the vertical direction, the distance between the straight tubular cold cathode fluorescent lamp 1 supported by the positioning portion 33 and the lower surface of the lower wall portion 21 of the housing 18 is formed in a double spiral shape. The length of the cold cathode fluorescent lamp 1 is shorter than half the height (height in the axial direction). Further, the lower end portion of the guide projection 28 formed on the upper wall portion 26 of the housing 18 is located slightly below the lower edge portion of the straight tubular cold cathode fluorescent lamp 1 supported by the positioning portion 33.

巻取り装置１４は、ハウジング１８の上壁部２６に形成された上部開口部２７に貫通状態で設置され、冷陰極蛍光灯１が外周に巻き付けられる巻芯４１と、加熱炉１２の上方に設けられ、巻芯４１を回転させる機能と、巻芯４１を前記回転の軸方向において変位させる機能とを有する図示しない駆動装置（駆動手段）とを備えている。本実施形態の駆動装置は、巻芯４１を回転させつつ昇降させたり、巻芯４１を回転させることなく昇降させたりすることができる構成となっている。   The winding device 14 is installed in a penetrating manner in an upper opening 27 formed in the upper wall portion 26 of the housing 18, and is provided above the heating furnace 12 and a winding core 41 around which the cold cathode fluorescent lamp 1 is wound. And a drive device (drive means) (not shown) having a function of rotating the core 41 and a function of displacing the core 41 in the axial direction of the rotation. The drive device according to the present embodiment is configured to be able to move up and down while rotating the core 41 or to move up and down without rotating the core 41.

巻芯４１は、上下方向に延在し、下方が閉塞された略円筒状をなす本体部４３と、本体部４３の下面から下方に突出する係止部としての一対の係止突起４４とを備えている。一対の係止突起４４の間には、直管状の冷陰極蛍光灯１を挿入可能な隙間が形成されている。加えて、各係止突起４４の外周面は、少なくとも冷陰極蛍光灯１が当接し得る部位が円弧状に構成されている。   The winding core 41 includes a main body portion 43 that extends in the vertical direction and has a substantially cylindrical shape with the lower portion closed, and a pair of locking protrusions 44 as locking portions that protrude downward from the lower surface of the main body portion 43. I have. Between the pair of locking projections 44, a gap is formed in which the straight tubular cold cathode fluorescent lamp 1 can be inserted. In addition, on the outer peripheral surface of each locking projection 44, at least a portion with which the cold cathode fluorescent lamp 1 can abut is formed in an arc shape.

また、本体部４３の外周面には、各係止突起４４の付根部に端を発し、雄ねじが２列で形成されるような格好で、上方に向けて本体部４３の外周面を旋回しつつ延在する旋回溝４５が形成されている。旋回溝４５の内側面は、冷陰極蛍光灯１の外周形状に対応した断面円弧状をなしている。尚、旋回溝４５は本体部４３のうち冷陰極蛍光灯１が巻き付けられる部位にのみ形成されており、それよりも上方部位には旋回溝４５が形成されていない。さらに、旋回溝４５の形成部位における外径（旋回溝４５間の山部の外径）は、旋回溝４５が形成されない部位における外径と同じとなっている。また、上部開口部２７の内径は、本体部４３の外径よりも若干大きい程度であり、本体部４３と上部開口部２７の周縁部との間の隙間からハウジング１８の内部空間１９の熱を極力逃がさないように構成されている。   Further, the outer peripheral surface of the main body 43 has an end at the root of each locking projection 44, and the external threads of the main body 43 are swung upward in such a manner that male threads are formed in two rows. A swiveling groove 45 extending while being formed is formed. The inner surface of the turning groove 45 has a circular arc shape corresponding to the outer peripheral shape of the cold cathode fluorescent lamp 1. The turning groove 45 is formed only in a portion of the main body 43 around which the cold cathode fluorescent lamp 1 is wound, and the turning groove 45 is not formed in a portion above the turning groove 45. Furthermore, the outer diameter (the outer diameter of the mountain portion between the turning grooves 45) at the part where the turning groove 45 is formed is the same as the outer diameter at the part where the turning groove 45 is not formed. Further, the inner diameter of the upper opening 27 is slightly larger than the outer diameter of the main body 43, and the heat of the internal space 19 of the housing 18 is transferred from the gap between the main body 43 and the peripheral edge of the upper opening 27. It is configured not to escape as much as possible.

さらに、上部開口部２７に近接して形成された各ガイド突起２８と、巻芯４１の旋回溝４５の内側面との間の距離は、冷陰極蛍光灯１の直径よりも若干長くなっており、ガイド突起２８と旋回溝４５との間に冷陰極蛍光灯１を進入させることができるようになっている。一方、旋回溝４５間の山部と、ガイド突起２８との間の距離は、冷陰極蛍光灯１の直径よりも短くなっている。   Furthermore, the distance between each guide projection 28 formed close to the upper opening 27 and the inner surface of the turning groove 45 of the winding core 41 is slightly longer than the diameter of the cold cathode fluorescent lamp 1. The cold cathode fluorescent lamp 1 can be inserted between the guide protrusion 28 and the turning groove 45. On the other hand, the distance between the crests between the turning grooves 45 and the guide protrusions 28 is shorter than the diameter of the cold cathode fluorescent lamp 1.

そして、支持片部３１に支持されている直管状の冷陰極蛍光灯１の長手方向中央部を、巻芯４１の一対の係止突起４４の間に位置させた状態で、巻芯４１を回転させつつ下降させることで、冷陰極蛍光灯１が巻芯４１とガイド突起２８との間に順次引き込まれつつガイド突起２８に圧接されることで曲げ加工され、当該冷陰極蛍光灯１が旋回溝４５に沿って巻芯４１の外周に巻き付けられることとなる（図４（ｂ）等参照）。このように、巻芯４１の外周に冷陰極蛍光灯１を巻き取っていくことで、２重螺旋形状の冷陰極蛍光灯１が形成されることとなる。   Then, the core 41 is rotated in a state where the longitudinal center of the straight tubular cold cathode fluorescent lamp 1 supported by the support piece 31 is positioned between the pair of locking projections 44 of the core 41. The cold cathode fluorescent lamp 1 is bent while being drawn in between the core 41 and the guide protrusion 28 and being pressed against the guide protrusion 28 by being lowered while being lowered. It will wind around the outer periphery of the core 41 along 45 (refer FIG.4 (b) etc.). In this way, by winding the cold cathode fluorescent lamp 1 around the outer periphery of the winding core 41, the double helical cold cathode fluorescent lamp 1 is formed.

尚、本実施形態では、冷陰極蛍光灯１を巻芯４１に巻き付ける際に、冷陰極蛍光灯１の両端部を引っ張る等して冷陰極蛍光灯１を緊張状態とする構成ではなく、支持片部３１の位置決め部３３によって冷陰極蛍光灯１の前後の変位を規制しつつ冷陰極蛍光灯１の下部を所望の高さ位置で支持するだけの構成である。このため、冷陰極蛍光灯１が巻芯４１に巻き取られていくにつれ、冷陰極蛍光灯１のうち未だ巻き取られていない直管状の部位が位置決め部３３の溝部上を滑るようにしてガイド突起２８と巻芯４１との間に引き込まれていくこととなる。   In this embodiment, when the cold cathode fluorescent lamp 1 is wound around the core 41, the cold cathode fluorescent lamp 1 is not in a tension state by pulling both ends of the cold cathode fluorescent lamp 1 or the like. This is a configuration in which the lower part of the cold cathode fluorescent lamp 1 is supported at a desired height position while the front-rear displacement of the cold cathode fluorescent lamp 1 is restricted by the positioning part 33 of the part 31. For this reason, as the cold cathode fluorescent lamp 1 is wound around the core 41, the straight tubular portion of the cold cathode fluorescent lamp 1 that has not yet been wound is slid on the groove of the positioning portion 33. It will be drawn between the projection 28 and the core 41.

また、各第２開口部２３に対応して３つずつ設けられた支持片部３１のうち最も巻芯４１に近くに位置する支持片部３１は、冷陰極蛍光灯１のうち巻芯４１に未だ巻き取られていない直管状の部位が、巻芯４１に既に巻き取られた部位によって片持ち支持されただけで垂れ下がらない長さとなるまで、直管状の部位を位置決め部３３で支持できるように配置されている。これにより、加熱されて軟化された冷陰極蛍光灯１の直管状の部位が、巻芯４１に巻き取られる前段階で垂れ下がってしまうといった事態を防止することができる。   Further, among the support piece portions 31 provided in correspondence with each second opening 23, the support piece portion 31 located closest to the core 41 is connected to the core 41 of the cold cathode fluorescent lamp 1. The straight tubular portion can be supported by the positioning portion 33 until the straight tubular portion that has not yet been wound has a length that does not hang down only by being cantilevered by the portion that has already been wound around the core 41. Is arranged. As a result, it is possible to prevent a situation where the straight tubular portion of the cold cathode fluorescent lamp 1 that has been heated and softened hangs down before being wound around the core 41.

さらに、冷陰極蛍光灯１が位置決め部３３に支持されている状態においては、図４（ｂ）に示すように、各第２開口部２３に対応して３つずつ設けられた支持片部３１のうち最も巻芯４１に近くに位置する支持片部３１と、一対のガイド突起２８（巻芯４１の巻取り位置）との間にかけて、冷陰極蛍光灯１が屈曲させられてハウジング１８の長手方向に対して斜めに延在することとなる。本実施形態では、冷陰極蛍光灯１が位置決め部３３に支持されている状態において、冷陰極蛍光灯１のうち支持片部３１とガイド突起２８との間に掛けて延びる部位のハウジング１８の長手方向に対する角度が５度以上３０度未満（約１０度）となっている。   Furthermore, in the state where the cold cathode fluorescent lamp 1 is supported by the positioning portion 33, as shown in FIG. 4B, three support pieces 31 provided corresponding to each second opening 23. The cold cathode fluorescent lamp 1 is bent between the support piece portion 31 closest to the core 41 and the pair of guide protrusions 28 (winding positions of the core 41), and the length of the housing 18 is increased. It will extend diagonally with respect to the direction. In the present embodiment, in the state in which the cold cathode fluorescent lamp 1 is supported by the positioning portion 33, the length of the housing 18 at a portion of the cold cathode fluorescent lamp 1 that extends between the support piece portion 31 and the guide protrusion 28. The angle with respect to the direction is 5 degrees or more and less than 30 degrees (about 10 degrees).

さて、本実施形態では、第１開口部２２は、巻芯４１の外周に巻き付けられた冷陰極蛍光灯１を挿通可能な大きさに構成されている。さらに、上記のように、支持片部３１の位置決め部３３に支持された直管状の冷陰極蛍光灯１と、ハウジング１８の下壁部２１との間の距離、すなわち、冷陰極蛍光灯１が巻芯４１に巻き取られることとなる巻取り位置と、ハウジング１８の下壁部２１との間の距離は、２重螺旋形状に成形された冷陰極蛍光灯１の高さの１／２の長さよりも若干短くなっている（図５（ａ）等参照）。このため、巻芯４１を回転させつつ下降させることで、巻芯４１に冷陰極蛍光灯１を巻き取っていくと、冷陰極蛍光灯１の長手方向全域における巻取り（成形）が完了する前の段階で、冷陰極蛍光灯１のうち巻芯４１に巻き取られて２重螺旋形状に成形された部位、及び、巻芯４１のうち冷陰極蛍光灯１が巻き付けられた部位が、第１開口部２２を介してハウジング１８の外部（下方）に導出されることとなる。また、本実施形態では、図６（ａ）に示すように、巻芯４１に巻き付けられた冷陰極蛍光灯１の全体がハウジング１８の外部に導出されるまで、巻芯４１を下降させることができるよう構成されている。   Now, in this embodiment, the 1st opening part 22 is comprised by the magnitude | size which can insert the cold cathode fluorescent lamp 1 wound around the outer periphery of the core 41. As shown in FIG. Furthermore, as described above, the distance between the straight tubular cold cathode fluorescent lamp 1 supported by the positioning portion 33 of the support piece 31 and the lower wall portion 21 of the housing 18, that is, the cold cathode fluorescent lamp 1 is The distance between the winding position to be wound on the winding core 41 and the lower wall portion 21 of the housing 18 is ½ of the height of the cold cathode fluorescent lamp 1 formed in a double spiral shape. It is slightly shorter than the length (see FIG. 5A, etc.). For this reason, when the cold cathode fluorescent lamp 1 is wound around the core 41 by rotating and lowering the winding core 41, the winding (molding) in the entire longitudinal direction of the cold cathode fluorescent lamp 1 is completed. At this stage, the portion of the cold cathode fluorescent lamp 1 wound around the core 41 and formed into a double spiral shape, and the portion of the core 41 around which the cold cathode fluorescent lamp 1 is wound are the first. It is led out to the outside (downward) of the housing 18 through the opening 22. Further, in the present embodiment, as shown in FIG. 6A, the core 41 can be lowered until the entire cold cathode fluorescent lamp 1 wound around the core 41 is led out of the housing 18. It is configured to be able to.

加えて、巻芯４１には、本体部４３のうち冷陰極蛍光灯１が巻き付けられる部位（旋回溝４５の形成区間）を加熱する巻芯加熱手段としての図示しないヒータが設けられている。本実施形態では、巻芯４１の昇降動作に伴って、ヒータのオンオフの切替制御が行われるように構成されている。尚、本実施形態の巻芯４１は熱伝導性の高い金属（例えば、銅等）によって構成されているが、その他の材料（例えば、離型性に優れるセラミック等）で構成することも可能である。   In addition, the core 41 is provided with a heater (not shown) as a core heating means for heating a portion (formation section of the turning groove 45) around the cold cathode fluorescent lamp 1 in the main body 43. In the present embodiment, the heater on / off switching control is performed as the winding core 41 moves up and down. In addition, although the core 41 of this embodiment is comprised with the metal (for example, copper etc.) with high heat conductivity, it is also possible to comprise with other materials (for example, ceramic etc. which are excellent in mold release property). is there.

また、図６等に示すように、成形装置１１は、第１開口部２２の下方において、巻芯４１に巻き付けられることで２重螺旋形状に成形され、巻芯４１の下降動作によりハウジング１８の外部（下方）に導出された冷陰極蛍光灯１を保持することのできる保持手段としてのチャック５１を備えている。チャック５１は、水平方向において相対し、互いに遠近するようにして変位可能な一対の作業片５３を備え、作業片５３によって冷陰極蛍光灯１の外周を挟持することによって冷陰極蛍光灯１を保持する構成となっている。本実施形態では、２重螺旋形状に成形された冷陰極蛍光灯１全体が第１開口部２２を介してハウジング１８の外部に導出された後、冷陰極蛍光灯１のうち第１開口部２２からの導出方向先端部側である下部をチャック５１で保持するように構成されている。そして、一対の作業片５３で２重螺旋形状に成形された冷陰極蛍光灯１を挟持した状態で、巻芯４１を冷陰極蛍光灯１を巻き取ったときとは逆方向に回転させつつ上昇させることで、２重螺旋形状の冷陰極蛍光灯１から巻芯４１が抜き取られるようになっている。   Further, as shown in FIG. 6 and the like, the forming device 11 is formed into a double spiral shape by being wound around the core 41 below the first opening 22, and the housing 18 is moved downward by the lowering operation of the core 41. A chuck 51 is provided as holding means that can hold the cold cathode fluorescent lamp 1 led out to the outside (downward). The chuck 51 includes a pair of work pieces 53 that are opposed to each other in the horizontal direction and can be displaced so as to be close to each other, and the cold cathode fluorescent lamp 1 is held by holding the outer periphery of the cold cathode fluorescent lamp 1 by the work pieces 53. It is the composition to do. In the present embodiment, the entire cold cathode fluorescent lamp 1 formed into a double spiral shape is led out of the housing 18 through the first opening 22, and then the first opening 22 of the cold cathode fluorescent lamp 1. The lower part, which is the leading end side in the lead-out direction, is configured to be held by the chuck 51. Then, with the cold cathode fluorescent lamp 1 formed in a double spiral shape sandwiched between a pair of work pieces 53, the core 41 is raised while rotating in the direction opposite to that when the cold cathode fluorescent lamp 1 is wound. By doing so, the core 41 is extracted from the cold cathode fluorescent lamp 1 having a double spiral shape.

次に、冷陰極蛍光灯１を２重螺旋形状に成形する過程について、図２〜図８を参照して説明する。   Next, a process of forming the cold cathode fluorescent lamp 1 into a double spiral shape will be described with reference to FIGS.

先ず、図８に示すように、非収容状態にある支持機構１３の各支持片部３１の位置決め部３３に対して直管状の冷陰極蛍光灯１を、冷陰極蛍光灯１の長手方向中央部と、ハウジング１８の長手方向中央部とが一致するように設置する。次に、図２に示すように、支持片部３１を上昇させて支持機構１３を収容状態とし、冷陰極蛍光灯１を高温環境にある加熱炉１２の内部空間１９に収容する。このとき、巻芯４１は、支持片部３１に支持された冷陰極蛍光灯１よりも上方に位置する待機位置にある。尚、待機位置にある巻芯４１は、一対の係止突起４４がハウジング１８の長手方向に対して直交する方向に並んだ状態となっている。また、冷陰極蛍光灯１の両端部は端部開口部２５を介してハウジング１８の外側に位置している。   First, as shown in FIG. 8, the straight-tube cold cathode fluorescent lamp 1 is placed in the longitudinal center of the cold cathode fluorescent lamp 1 with respect to the positioning portion 33 of each support piece portion 31 of the support mechanism 13 in the non-accommodating state. And the longitudinal direction center of the housing 18 are aligned with each other. Next, as shown in FIG. 2, the support piece portion 31 is raised to place the support mechanism 13 in the accommodated state, and the cold cathode fluorescent lamp 1 is accommodated in the internal space 19 of the heating furnace 12 in a high temperature environment. At this time, the core 41 is in a standby position positioned above the cold cathode fluorescent lamp 1 supported by the support piece 31. The winding core 41 in the standby position is in a state in which a pair of locking projections 44 are arranged in a direction orthogonal to the longitudinal direction of the housing 18. Further, both end portions of the cold cathode fluorescent lamp 1 are located outside the housing 18 through the end opening 25.

ハウジング１８の内部空間１９に位置する冷陰極蛍光灯１が十分に加熱された（冷陰極蛍光灯１の温度が徐冷点よりも高く軟化点よりも低い状態となった）後、図３に示すように、巻芯４１を、回転させることなく、一対の係止突起４４の間に直管状の冷陰極蛍光灯１が挟まれることとなる準備位置となるまで下降させる。   After the cold cathode fluorescent lamp 1 located in the internal space 19 of the housing 18 is sufficiently heated (the temperature of the cold cathode fluorescent lamp 1 is higher than the annealing point and lower than the softening point), FIG. As shown, the core 41 is lowered without being rotated until it reaches a preparation position where the straight tubular cold cathode fluorescent lamp 1 is sandwiched between the pair of locking projections 44.

続いて、図４に示すように、係止突起４４で冷陰極蛍光灯１を引っ掛けつつ、巻芯４１を右回り（下面視で反時計回り方向）に回転させながら下降させることで、冷陰極蛍光灯１を巻芯４１の外周に巻き付けていく。尚、巻芯４１に巻き付けられた冷陰極蛍光灯１の内周側の部位は、巻芯４１の外周面に形成された旋回溝４５に嵌入することとなり、これによって、巻芯４１に巻き付けられる冷陰極蛍光灯１の位置決めが行われるとともに、冷陰極蛍光灯１の巻芯４１からの脱落が防止される。   Subsequently, as shown in FIG. 4, the cold cathode fluorescent lamp 1 is hooked by the locking projection 44, and the core 41 is lowered while being rotated clockwise (counterclockwise in the bottom view). The fluorescent lamp 1 is wound around the outer periphery of the core 41. The portion on the inner peripheral side of the cold cathode fluorescent lamp 1 wound around the winding core 41 is fitted into a turning groove 45 formed on the outer peripheral surface of the winding core 41, thereby being wound around the winding core 41. The cold cathode fluorescent lamp 1 is positioned and the cold cathode fluorescent lamp 1 is prevented from falling off the core 41.

また、冷陰極蛍光灯１が巻芯４１に巻き付けられていくにつれ、巻芯４１が下降して第１開口部２２からハウジング１８の外部に突出していくこととなり、巻芯４１に巻き付けられた冷陰極蛍光灯１は順次ハウジング１８の外部に導出されていくこととなる。すなわち、冷陰極蛍光灯１のうち成形を終えた部位から順次冷却が開始されることとなる。   Further, as the cold cathode fluorescent lamp 1 is wound around the core 41, the core 41 is lowered and protrudes from the first opening 22 to the outside of the housing 18, and the cold wound around the core 41. The cathode fluorescent lamp 1 is sequentially led out of the housing 18. That is, cooling is started sequentially from the portion of the cold cathode fluorescent lamp 1 that has been molded.

尚、冷陰極蛍光灯１の成形を開始する当初はハウジング１８の外部に位置していた冷陰極蛍光灯１の両端部については、冷陰極蛍光灯１が巻芯４１に巻き取られていくにつれてハウジング１８の内部空間１９に引き込まれていき、巻芯４１に巻き取られる段階では十分に加熱された状態となる。また、巻芯４１に内蔵されたヒータは、巻取りが開始される際にオフされており、ハウジング１８の外部に排出された冷陰極蛍光灯１が巻芯４１のヒータによって加熱されることはない。   The cold cathode fluorescent lamp 1 is wound around the winding core 41 at both ends of the cold cathode fluorescent lamp 1 that were located outside the housing 18 at the beginning of forming the cold cathode fluorescent lamp 1. At the stage of being drawn into the internal space 19 of the housing 18 and wound around the core 41, the housing 18 is sufficiently heated. Further, the heater built in the core 41 is turned off when the winding is started, and the cold cathode fluorescent lamp 1 discharged to the outside of the housing 18 is heated by the heater of the core 41. Absent.

そして、図５に示すように、冷陰極蛍光灯１の長手方向全体を巻芯４１に巻き終えた後、さらに、冷陰極蛍光灯１の全体が完全にハウジング１８の外部に出るまで巻芯４１を下降させる。尚、巻芯４１が、冷陰極蛍光灯１の巻取りを完了する巻取り完了位置から、冷陰極蛍光灯１全体を加熱炉１２の外部に導出させる導出完了位置まで下降する間は当該巻芯４１を回転させる必要はなく、回転を伴わずに比較的素早く下降させてもよいし、導出完了位置となったときに冷陰極蛍光灯１が所期の向きとなるように、回転で向きの微調整を行いつつ下降させてもよい。また、２重螺旋形状に形成された冷陰極蛍光灯１のうち内周側の部位は、巻芯４１の旋回溝４５の内側に嵌入された状態となっているため、冷陰極蛍光灯１がガイド突起２８から離間しても、冷陰極蛍光灯１が巻芯４１（旋回溝４５）から脱落することはない。   Then, as shown in FIG. 5, after the entire longitudinal direction of the cold cathode fluorescent lamp 1 has been wound around the core 41, the core 41 is further continued until the entire cold cathode fluorescent lamp 1 completely comes out of the housing 18. Is lowered. In addition, while the winding core 41 descends from a winding completion position where the winding of the cold cathode fluorescent lamp 1 is completed to a derivation completion position where the entire cold cathode fluorescent lamp 1 is led out of the heating furnace 12, the winding core 41 It is not necessary to rotate 41, it may be lowered relatively quickly without rotation, and the cold cathode fluorescent lamp 1 is rotated in a direction so that the cold-cathode fluorescent lamp 1 is in the intended direction when it reaches the extraction completion position. It may be lowered while performing fine adjustment. Moreover, since the site | part by the side of the inner periphery among the cold cathode fluorescent lamps 1 formed in the double spiral shape is in a state of being fitted inside the turning groove 45 of the core 41, the cold cathode fluorescent lamp 1 is Even if the cold cathode fluorescent lamp 1 is separated from the guide protrusion 28, the cold cathode fluorescent lamp 1 does not fall off the winding core 41 (the turning groove 45).

図６に示すように、冷陰極蛍光灯１が導出完了位置に達すると、２重螺旋形状に成形された冷陰極蛍光灯１を一対の作業片５３で挟持するべくチャック５１が動作する。本実施形態では、２重螺旋形状に成形された冷陰極蛍光灯１のうち、ハウジング１８から先行して導出され、冷却が進んでいる下部をチャック５１で保持する構成となっている。そして、チャック５１によって冷陰極蛍光灯１が保持されると、巻芯４１が巻取り時とは反対の左回り（下面視で時計回り方向）に回転しながら上昇する。これにより、図７に示すように、チャック５１で保持された２重螺旋形状の冷陰極蛍光灯１から巻芯４１が抜き取られることとなる。以上のようにして、２重螺旋形状の冷陰極蛍光灯１が成形されることとなる。   As shown in FIG. 6, when the cold cathode fluorescent lamp 1 reaches the lead-out completion position, the chuck 51 operates to sandwich the cold cathode fluorescent lamp 1 formed in a double spiral shape with a pair of work pieces 53. In the present embodiment, of the cold cathode fluorescent lamp 1 formed in a double spiral shape, the lower part that is led out from the housing 18 and is being cooled is held by the chuck 51. When the cold cathode fluorescent lamp 1 is held by the chuck 51, the core 41 rises while rotating counterclockwise (clockwise in the bottom view) opposite to that during winding. As a result, as shown in FIG. 7, the core 41 is extracted from the double helical cold cathode fluorescent lamp 1 held by the chuck 51. As described above, the double spiral cold cathode fluorescent lamp 1 is formed.

また、巻芯４１が冷陰極蛍光灯１から抜き取られた後、巻芯４１は待機位置となるまで上昇して次の冷陰極蛍光灯１の成形に備えることとなる。さらに、巻芯４１が２重螺旋形状の冷陰極蛍光灯１から完全に抜き取られた抜取り完了位置となると、巻芯４１に内蔵されたヒータがオンされる。尚、巻芯４１が抜取り完了位置から待機位置まで上昇する間は、当該巻芯４１を回転させる必要はなく、回転を伴わずに上昇してもよいし、待機位置となったときに、一対の係止突起４４がハウジング１８の長手方向に対して直交する方向に並ぶような向きとなるように、回転で向きの微調整が行われつつ上昇してもよい。   In addition, after the winding core 41 is extracted from the cold cathode fluorescent lamp 1, the winding core 41 rises to the standby position and prepares for the next cold cathode fluorescent lamp 1. Further, when the core 41 reaches the extraction completion position where the core 41 is completely extracted from the cold cathode fluorescent lamp 1 having the double spiral shape, the heater built in the core 41 is turned on. It is not necessary to rotate the winding core 41 while the winding core 41 is raised from the extraction completion position to the standby position, and the winding core 41 may be lifted without rotation. The locking projections 44 may be lifted while being finely adjusted in the direction of rotation so that the locking projections 44 are aligned in a direction orthogonal to the longitudinal direction of the housing 18.

以上詳述したように、本実施形態によれば、冷陰極蛍光灯１の成形に際し、冷陰極蛍光灯１全体の成形（巻取り）が完了する前の段階であっても、冷陰極蛍光灯１のうち巻芯４１に巻き取られた部位から順次第１開口部２２を介してハウジング１８の外部に導出されていく。このため、冷陰極蛍光灯１のうち成形を終えた部位から順次冷却が開始されることとなる。従って、加熱炉１２内において冷陰極蛍光灯１の成形が完了してから冷陰極蛍光灯１の冷却を開始する場合に比べ、冷却工程をいち早く開始することができる。結果として、生産効率の向上等を図ることができる。また、加熱炉１２内で冷却を行う場合、或いは、加熱炉１２を型開きのように大きく開いて冷陰極蛍光灯１を取出す場合には、加熱炉１２の内部空間１９の温度が低下するため、次の冷陰極蛍光灯１を成形するべく内部空間１９を再度高温環境とするまでに比較的多くの時間を要してしまう。この点、本実施形態では、第１開口部２２を介して冷陰極蛍光灯１を加熱炉１２から外部に導出することで冷陰極蛍光灯１を冷却する構成であることから、かかる不具合を回避することができる。   As described above in detail, according to the present embodiment, when the cold cathode fluorescent lamp 1 is formed, even if the cold cathode fluorescent lamp 1 is not completely formed (rolled), the cold cathode fluorescent lamp 1 are sequentially led out of the housing 18 through the first opening 22 from the portion wound around the core 41. For this reason, cooling will be started sequentially from the portion of the cold cathode fluorescent lamp 1 that has been molded. Therefore, the cooling process can be started earlier than when cooling of the cold cathode fluorescent lamp 1 is started after the formation of the cold cathode fluorescent lamp 1 is completed in the heating furnace 12. As a result, the production efficiency can be improved. Further, when cooling in the heating furnace 12, or when the heating furnace 12 is opened wide like a mold and the cold cathode fluorescent lamp 1 is taken out, the temperature of the internal space 19 of the heating furnace 12 decreases. In order to form the next cold cathode fluorescent lamp 1, it takes a relatively long time to make the internal space 19 into a high temperature environment again. In this respect, in the present embodiment, the cold cathode fluorescent lamp 1 is cooled by deriving the cold cathode fluorescent lamp 1 from the heating furnace 12 to the outside through the first opening 22, so that such inconvenience is avoided. can do.

また、巻芯４１の外周に冷陰極蛍光灯１が巻き付けられることで行われる冷陰極蛍光灯１の曲げ成形は加熱炉１２の内部空間１９にて行われるため、冷陰極蛍光灯１の成形を最初から最後まで一定の温度環境下で行うことができる。従って、例えば、冷陰極蛍光灯１の成形を加熱炉１２の外部で行う場合のように、成形の途中で冷陰極蛍光灯１の温度が大きく変化することに起因して、成形が困難になってしまうといった事態を回避することができる。さらに、冷陰極蛍光灯１の成形を加熱炉１２の内部で行うので、過度に冷陰極蛍光灯１を加熱しなくても好適に成形を行うことができる。従って、冷陰極蛍光灯１が軟化し過ぎてしまい、冷陰極蛍光灯１が歪んでしまうといった事態を回避することができる上、冷却に要する時間の短縮、省エネルギー化等を図ることができる。   Further, since the cold cathode fluorescent lamp 1 is bent in the inner space 19 of the heating furnace 12 by the cold cathode fluorescent lamp 1 being wound around the outer periphery of the winding core 41, the cold cathode fluorescent lamp 1 is formed. It can be performed in a constant temperature environment from the beginning to the end. Therefore, for example, when the cold cathode fluorescent lamp 1 is molded outside the heating furnace 12, the temperature of the cold cathode fluorescent lamp 1 changes greatly during the molding, so that the molding becomes difficult. Can be avoided. Furthermore, since the cold cathode fluorescent lamp 1 is formed inside the heating furnace 12, it can be suitably formed without excessively heating the cold cathode fluorescent lamp 1. Therefore, it is possible to avoid a situation in which the cold cathode fluorescent lamp 1 is excessively softened and the cold cathode fluorescent lamp 1 is distorted, and it is possible to shorten the time required for cooling and save energy.

また、２重螺旋形状に成形された冷陰極蛍光灯１をハウジング１８の外部に導出するための第１開口部２２は、ハウジング１８の下壁部２１に形成されている。このため、例えば、第１開口部２２がハウジング１８の上壁部２６や側壁部に形成される場合に比べ、加熱炉１２の内部空間１９の熱を外部に逃げ難くさせることができる。従って、第１開口部２２を形成することに起因する内部空間１９の熱損失を抑制することができ、省エネルギー化等を図ることができる。さらに、加熱炉１２の熱が第１開口部２２から外部に逃げ難くなっていることにより、第１開口部２２を挟んで加熱炉１２の内部と外部との間の温度差を大きくすることができる。すなわち、冷陰極蛍光灯１を第１開口部２２から外部に導出したのにもかかわらず、第１開口部２２から外部に逃げた熱によって冷陰極蛍光灯１の冷却が進行し難くなってしまうといった事態を抑止することができる。従って、第１開口部２２から外部に導出された直後から冷陰極蛍光灯１の冷却を好適に進行させることができる。加えて、第１開口部２２がハウジング１８の上壁部２６や側壁部に設けられる場合に比べ、冷陰極蛍光灯１の巻取りに際して冷陰極蛍光灯１が位置ずれしないように支持するための位置決め部３３の形状を簡素化することができる。   Further, the first opening 22 for leading the cold cathode fluorescent lamp 1 formed in a double spiral shape to the outside of the housing 18 is formed in the lower wall portion 21 of the housing 18. For this reason, for example, compared with the case where the 1st opening part 22 is formed in the upper wall part 26 and side wall part of the housing 18, the heat of the internal space 19 of the heating furnace 12 can be made difficult to escape outside. Therefore, the heat loss of the internal space 19 resulting from the formation of the first opening 22 can be suppressed, and energy saving or the like can be achieved. Furthermore, since the heat of the heating furnace 12 is difficult to escape from the first opening 22 to the outside, the temperature difference between the inside and the outside of the heating furnace 12 can be increased across the first opening 22. it can. That is, although the cold cathode fluorescent lamp 1 is led out from the first opening 22, the cooling of the cold cathode fluorescent lamp 1 is difficult to proceed due to the heat escaping from the first opening 22 to the outside. Such a situation can be suppressed. Therefore, the cooling of the cold cathode fluorescent lamp 1 can be suitably advanced immediately after being led out from the first opening 22. In addition, compared to the case where the first opening 22 is provided in the upper wall portion 26 or the side wall portion of the housing 18, the cold cathode fluorescent lamp 1 is supported so as not to be displaced during winding of the cold cathode fluorescent lamp 1. The shape of the positioning part 33 can be simplified.

さらに、チャック５１は、２重螺旋形状に成形された冷陰極蛍光灯１のうち加熱炉１２から外部に先行して導出されることで冷却が進行している下部を保持する構成となっている。従って、冷陰極蛍光灯１の変形等を招くことなく冷陰極蛍光灯１をしっかりと保持することができ、巻芯４１の冷陰極蛍光灯１からの抜き取り作業等を比較的スムースに行うことができる。   Further, the chuck 51 is configured to hold the lower part of the cold cathode fluorescent lamp 1 formed in a double spiral shape by being led out from the heating furnace 12 to the outside so that the cooling is proceeding. . Therefore, the cold cathode fluorescent lamp 1 can be firmly held without causing deformation of the cold cathode fluorescent lamp 1, and the operation of removing the winding core 41 from the cold cathode fluorescent lamp 1 can be performed relatively smoothly. it can.

また、ハウジング１８の上壁部２６には、巻芯４１の近傍において下方に突出するガイド突起２８が設けられ、巻芯４１が回転しつつ下降することで、冷陰極蛍光灯１は、巻芯４１とガイド突起２８との間に引き込まれるとともに、ガイド突起２８に圧接して曲げ加工されつつ、巻芯４１の外周に巻き付けられることとなる。当該構成により、冷陰極蛍光灯１を巻芯４１へ巻き付ける際に、冷陰極蛍光灯１の長手方向両端部を保持して冷陰極蛍光灯１を緊張状態としなくても（冷陰極蛍光灯１の両端部を自由端としても）、確実に冷陰極蛍光灯１を巻芯４１に巻き付けることができる。従って、冷陰極蛍光灯１の巻芯４１への巻き付けに際し、冷陰極蛍光灯１の長手方向両端部を保持するような構成に比べ、構成（支持片部３１等）の簡素化、製造作業性の向上等を図ることができる。特に、本実施形態のように、冷陰極蛍光灯１の成形を開始する当初において冷陰極蛍光灯１の両端部がハウジング１８の外部に飛び出しており、冷陰極蛍光灯１の両端部を保持して管形蛍光灯の緊張状態を保つことが非常に困難な場合においては、かかる作用効果が一層顕著なものとなる。   The upper wall portion 26 of the housing 18 is provided with a guide protrusion 28 that protrudes downward in the vicinity of the core 41, and the cold cathode fluorescent lamp 1 can be In addition to being drawn between 41 and the guide protrusion 28, it is wound around the outer periphery of the core 41 while being pressed against the guide protrusion 28 and bent. With this configuration, when the cold cathode fluorescent lamp 1 is wound around the core 41, both ends in the longitudinal direction of the cold cathode fluorescent lamp 1 are held and the cold cathode fluorescent lamp 1 is not in a tension state (cold cathode fluorescent lamp 1 Thus, the cold cathode fluorescent lamp 1 can be reliably wound around the core 41. Accordingly, when the cold cathode fluorescent lamp 1 is wound around the core 41, the configuration (support piece 31 and the like) is simplified and the manufacturing workability is improved as compared with the configuration in which both ends in the longitudinal direction of the cold cathode fluorescent lamp 1 are held. The improvement etc. can be aimed at. In particular, as in the present embodiment, both ends of the cold cathode fluorescent lamp 1 protrude to the outside of the housing 18 at the beginning of the molding of the cold cathode fluorescent lamp 1, and both ends of the cold cathode fluorescent lamp 1 are held. In the case where it is very difficult to maintain the tension state of the tubular fluorescent lamp, such an effect becomes more remarkable.

また、支持機構１３は、位置決め部３３が加熱炉１２の内部空間１９に位置する収容状態と、位置決め部３３が加熱炉１２の外部に位置する非収容状態とに状態変化可能に構成されている。このため、非収容状態にある支持機構１３の位置決め部３３に対し、直管状の（成形前の）冷陰極蛍光灯１を位置合わせしつつ載置してから、支持機構１３を収容状態に状態変化させることで、冷陰極蛍光灯１を加熱炉１２に収容させることができる。従って、冷陰極蛍光灯１を加熱炉１２に収容させる際の作業性の向上等を図ることができる。   Further, the support mechanism 13 is configured to be able to change the state between an accommodation state in which the positioning portion 33 is located in the internal space 19 of the heating furnace 12 and a non-accommodation state in which the positioning portion 33 is located outside the heating furnace 12. . For this reason, after placing the straight tubular (before forming) cold cathode fluorescent lamp 1 in alignment with the positioning portion 33 of the support mechanism 13 in the non-accommodating state, the support mechanism 13 is in the accommodated state. By changing, the cold cathode fluorescent lamp 1 can be accommodated in the heating furnace 12. Accordingly, it is possible to improve workability when the cold cathode fluorescent lamp 1 is accommodated in the heating furnace 12.

加えて、加熱炉１２で加熱された冷陰極蛍光灯１は比較的柔らかくなるため、冷陰極蛍光灯１のうち、既に巻芯４１に巻き取られた部位によって、未だ巻き取られていない部位が片持ち支持されるだけでは、当該巻き取られていない部位が自重により垂れ下がってしまうおそれがある。これに対し、本実施形態によれば、冷陰極蛍光灯１のうち、未だ巻き取られていない部位が、既に巻き取られた部位に片持ち支持されただけで垂れ下がらない長さとなるまで当該巻き取られていない部位を支持できるように支持片部３１が配置されている。このため、位置決め部３３の支持がなくなっても最後までより好適に冷陰極蛍光灯１を２重螺旋形状に成形することができる。   In addition, since the cold cathode fluorescent lamp 1 heated in the heating furnace 12 is relatively soft, a portion of the cold cathode fluorescent lamp 1 that has not yet been wound by the portion that has already been wound around the core 41. If it is simply cantilevered, there is a risk that the part that has not been wound will hang down due to its own weight. On the other hand, according to the present embodiment, the portion of the cold cathode fluorescent lamp 1 that has not yet been wound becomes a length that does not hang down only by being cantilevered by the portion that has already been wound. A support piece portion 31 is arranged so as to support a portion that is not wound. For this reason, even if support of positioning part 33 is lost, cold cathode fluorescent lamp 1 can be more suitably formed in a double spiral shape until the end.

さらに、巻芯４１には自身を加熱するヒータが内蔵されている。このため、巻き取られた冷陰極蛍光灯１とともに加熱炉１２の外部に導出されることで冷却されてしまう巻芯４１の温度を、ヒータによって比較的迅速に冷陰極蛍光灯１の成形に適した温度にまで上昇させることができる。従って、次の冷陰極蛍光灯１の成形を開始するまでの時間を短縮することができ、結果として、生産性の向上等を図ることができる。   Furthermore, the core 41 has a built-in heater for heating itself. For this reason, the temperature of the winding core 41 that is cooled by being led out of the heating furnace 12 together with the wound cold cathode fluorescent lamp 1 is suitable for forming the cold cathode fluorescent lamp 1 relatively quickly by the heater. The temperature can be increased to Therefore, it is possible to shorten the time until the next cold cathode fluorescent lamp 1 starts to be formed, and as a result, it is possible to improve productivity.

尚、上記実施形態の記載内容に限定されず、例えば次のように実施してもよい。勿論、以下において例示しない他の応用例、変更例も当然可能である。   In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

（ａ）上記実施形態では、ハウジング１８の下壁部２１に対して第１開口部２２が形成され、巻芯４１に巻き取られた冷陰極蛍光灯１がハウジング１８の下方に導出されるように構成されているが、特にこのような構成に限定されるものではない。例えば、ハウジング１８の上壁部２６や側壁部に冷陰極蛍光灯１を外部に導出させるための第１開口部２２を形成してもよい。但し、巻芯４１に巻き取られた冷陰極蛍光灯１を外部に導出するための第１開口部２２をハウジング１８の下壁部２１に形成することで、内部空間１９の熱効率を高める等の作用効果が奏される。   (A) In the above embodiment, the first opening 22 is formed in the lower wall portion 21 of the housing 18 so that the cold cathode fluorescent lamp 1 wound around the winding core 41 is led out below the housing 18. However, it is not particularly limited to such a configuration. For example, the first opening 22 for leading the cold cathode fluorescent lamp 1 to the outside may be formed in the upper wall portion 26 or the side wall portion of the housing 18. However, by forming the first opening portion 22 in the lower wall portion 21 of the housing 18 for leading the cold cathode fluorescent lamp 1 wound around the winding core 41 to the outside, the thermal efficiency of the internal space 19 is increased. An effect is produced.

また、上記実施形態では、位置決め部３３に支持された直管状の冷陰極蛍光灯１と、ハウジング１８の下壁部２１の下面との間の距離は、２重螺旋形状に成形された冷陰極蛍光灯１の高さに相当する長さの１／２よりも短くなっているが、２重螺旋形状に成形された冷陰極蛍光灯１の高さに相当する長さよりも短くなっていればよい。尚、位置決め部３３に支持された直管状の冷陰極蛍光灯１と、ハウジング１８の下壁部２１の下面との間の距離を短くすれば、冷陰極蛍光灯１の冷却をより早い段階から開始することができ、長くすれば、冷陰極蛍光灯１の加熱や温度の維持等をより好適に行うことができる。   In the above embodiment, the distance between the straight tubular cold cathode fluorescent lamp 1 supported by the positioning portion 33 and the lower surface of the lower wall portion 21 of the housing 18 is a cold cathode formed in a double spiral shape. If it is shorter than 1/2 of the length corresponding to the height of the fluorescent lamp 1, but shorter than the length corresponding to the height of the cold cathode fluorescent lamp 1 formed in a double spiral shape. Good. If the distance between the straight tubular cold cathode fluorescent lamp 1 supported by the positioning portion 33 and the lower surface of the lower wall portion 21 of the housing 18 is shortened, the cold cathode fluorescent lamp 1 can be cooled from an earlier stage. If it can be started and lengthened, heating of the cold cathode fluorescent lamp 1, maintenance of temperature, etc. can be performed more suitably.

（ｂ）上記実施形態では、冷陰極蛍光灯１を２重螺旋形状に成形する成形装置１１について具現化しているが、その他の蛍光灯（放電灯）を２重螺旋形状に成形する成形装置に具現化することも可能である。また、２重螺旋形状に成形された冷陰極蛍光灯１は、室内（天井等）に取付けるだけでなく、電気スタンドや懐中電灯等に使用することも可能である。   (B) In the above embodiment, the cold cathode fluorescent lamp 1 is embodied with the molding device 11 that molds the double helical shape, but the other fluorescent lamp (discharge lamp) is molded into the double helical shape. It can also be realized. Further, the cold cathode fluorescent lamp 1 formed into a double spiral shape can be used not only in a room (ceiling etc.) but also in a desk lamp, a flashlight and the like.

（ｃ）上記実施形態では、一対のガイド突起２８が、ハウジング１８の長手方向に対して直交する方向に並ぶようにして配置されているが、特にこのような構成に限定されるものではない。但し、ガイド突起２８が上記実施形態の位置よりも巻芯４１の巻取り方向において奥側に位置する場合、冷陰極蛍光灯１が支持片部３１に支持されなくなってから完全に巻き取られるまでの間において、冷陰極蛍光灯１の両端部がハウジング１８の側壁部により近接してしまうおそれがあり、熱効率を考慮して内部空間１９の幅を小さくすると、冷陰極蛍光灯１の両端部がハウジング１８の側壁部に当接してしまうことが懸念される。一方、ガイド突起２８が上記実施形態の位置よりも巻芯４１の巻取り方向において手前側に位置する場合、冷陰極蛍光灯１のうち支持片部３１の位置決め部３３とガイド突起２８とにかけて斜めに延在する部位と、巻芯４１に巻き取られた部位との境界部の角度がきつくなり、冷陰極蛍光灯１に比較的大きな負荷が加えられて冷陰極蛍光灯１に悪影響を及ぼすおそれがある。   (C) In the above-described embodiment, the pair of guide protrusions 28 are arranged so as to be aligned in a direction orthogonal to the longitudinal direction of the housing 18, but is not particularly limited to such a configuration. However, when the guide protrusion 28 is located on the far side in the winding direction of the core 41 with respect to the position of the above embodiment, the cold cathode fluorescent lamp 1 is not supported by the support piece portion 31 until it is completely wound. In the meantime, both end portions of the cold cathode fluorescent lamp 1 may be closer to the side wall portion of the housing 18, and if the width of the internal space 19 is reduced in consideration of thermal efficiency, the both end portions of the cold cathode fluorescent lamp 1 are There is a concern about contact with the side wall portion of the housing 18. On the other hand, when the guide protrusion 28 is positioned closer to the front side in the winding direction of the core 41 than the position of the above-described embodiment, the guide protrusion 28 is inclined between the positioning portion 33 of the support piece 31 and the guide protrusion 28 in the cold cathode fluorescent lamp 1. The angle of the boundary between the portion extending to the core 41 and the portion wound around the core 41 becomes tight, and a relatively large load may be applied to the cold cathode fluorescent lamp 1 to adversely affect the cold cathode fluorescent lamp 1 There is.

（ｄ）上記実施形態では、冷陰極蛍光灯１の成形に際して冷陰極蛍光灯１の両端部を保持することなく、ガイド突起２８と冷陰極蛍光灯１とを圧接させて冷陰極蛍光灯１を曲げ加工する構成となっているが、例えば、冷陰極蛍光灯１の巻芯４１への巻取りの進行に伴って変位する保持部材によって、冷陰極蛍光灯１の両端部を保持する構成を採用してもよい。但し、構成の簡素化や製造作業性の向上を図る上では、上記実施形態のように冷陰極蛍光灯１の端部を保持することなく、ガイド突起２８で冷陰極蛍光灯１を巻芯４１に巻き付けていく構成を採用することが望ましい。   (D) In the above embodiment, the cold-cathode fluorescent lamp 1 is formed by pressing the guide projection 28 and the cold-cathode fluorescent lamp 1 without holding both ends of the cold-cathode fluorescent lamp 1 when forming the cold-cathode fluorescent lamp 1. Although it is configured to bend, for example, a configuration is adopted in which both ends of the cold cathode fluorescent lamp 1 are held by a holding member that is displaced as the winding of the cold cathode fluorescent lamp 1 around the core 41 progresses. May be. However, in order to simplify the configuration and improve the manufacturing workability, the cold cathode fluorescent lamp 1 is wound around the core 41 by the guide protrusion 28 without holding the end of the cold cathode fluorescent lamp 1 as in the above embodiment. It is desirable to adopt a configuration that winds around.

（ｅ）上記実施形態において、支持片部３１が上下方向だけでなく水平方向（例えば、図７の紙面奥行方向）にもスライドできるように構成してもよい。例えば、位置決め部３３が加熱炉１２の内部空間１９に位置し、位置決め部３３に支持された冷陰極蛍光灯１の中央部が、巻芯４１の一対の係止突起４４の間に収まる第１の位置と、第１の位置から加熱炉１２の長手方向に対して直交する方向においてハウジング１８の一方の側壁部に近接するようにしてずれ、位置決め部３３に支持された冷陰極蛍光灯１が待機位置以外の位置にある巻芯４１及び巻芯４１に巻き付けられた冷陰極蛍光灯１と当接しない位置である第２の位置と、位置決め部３３が加熱炉１２の外部となるまで第２の位置から真直ぐに下降した第３の位置との間で変位可能に構成してもよい。すなわち、冷陰極蛍光灯１の巻取り作業中は冷陰極蛍光灯１を支持するべく支持片部３１を第１の位置とし、冷陰極蛍光灯１の巻取りが完了した段階で支持片部３１を第２の位置経由で第３の位置へと変位させ、第３の位置で冷陰極蛍光灯１を設置してから、第２の位置へと変位させ、巻芯４１が待機位置へと変位した段階で第１の位置へと変位させることとしてもよい。当該構成を採用する場合、巻芯４１が待機位置に戻る前から次の冷陰極蛍光灯１の加熱を開始することができ、より一層の製造効率の向上を図ることができる。   (E) In the said embodiment, you may comprise so that the support piece part 31 can slide not only to an up-down direction but to a horizontal direction (for example, the paper surface depth direction of FIG. 7). For example, the positioning portion 33 is located in the internal space 19 of the heating furnace 12, and the central portion of the cold cathode fluorescent lamp 1 supported by the positioning portion 33 is accommodated between the pair of locking protrusions 44 of the core 41. The cold cathode fluorescent lamp 1 supported by the positioning portion 33 is shifted from the first position in a direction orthogonal to the longitudinal direction of the heating furnace 12 so as to be close to one side wall portion of the housing 18. The winding core 41 at a position other than the standby position, the second position that does not contact the cold cathode fluorescent lamp 1 wound around the winding core 41, and the second position until the positioning portion 33 is outside the heating furnace 12. You may comprise so that it can displace between the 3rd position which descend | falls straight from this position. That is, during the winding operation of the cold cathode fluorescent lamp 1, the support piece portion 31 is set to the first position to support the cold cathode fluorescent lamp 1, and the support piece portion 31 is completed when the winding of the cold cathode fluorescent lamp 1 is completed. Is moved to the third position via the second position, the cold cathode fluorescent lamp 1 is installed at the third position and then moved to the second position, and the core 41 is moved to the standby position. It is good also as displacing to the 1st position in the stage which carried out. When this configuration is adopted, the heating of the next cold cathode fluorescent lamp 1 can be started before the core 41 returns to the standby position, and the production efficiency can be further improved.

尚、支持片部３１をハウジング１８の長手方向においてスライド可能に構成するとともに、支持片部３１を所定の位置までスライドさせた後、かかる支持片部３１のハウジング１８の長手方向における変位を規制するストッパを設けることとしてもよい。さらに、巻芯４１を着脱可能に構成してもよい。この場合、上記実施形態の成形装置１１を用いて、長さの異なる複数種類の冷陰極蛍光灯１を好適に２重螺旋形状に成形することができ、汎用性を向上させることができる。また、支持片部３１の数は特に限定されるものではなく、少なくとも第１開口部２２を挟んで対向するように一対の支持片部３１が設けられていればよい。   The support piece 31 is configured to be slidable in the longitudinal direction of the housing 18, and after the support piece 31 is slid to a predetermined position, the displacement of the support piece 31 in the longitudinal direction of the housing 18 is restricted. A stopper may be provided. Furthermore, you may comprise the core 41 so that attachment or detachment is possible. In this case, a plurality of types of cold cathode fluorescent lamps 1 having different lengths can be suitably formed into a double spiral shape using the forming apparatus 11 of the above embodiment, and versatility can be improved. Further, the number of support piece portions 31 is not particularly limited, and a pair of support piece portions 31 may be provided so as to face each other with at least the first opening portion 22 interposed therebetween.

（ｆ）上記実施形態では特に言及していないが、ハウジング１８に形成されている第２開口部２３や端部開口部２５から熱が逃げ難くなるように構成してもよい。例えば、第２開口部２３や端部開口部２５に対応して、冷陰極蛍光灯１で押圧すれば広がるような可撓性を有する断熱シートや、開閉可能なシャッタを設けることとしてもよいし、支持片部３１に対して一体的に形成され、支持機構１３が収容状態とされた場合に第２開口部２３を閉塞する（第１開口部２２は閉塞しない）閉塞板を設けることとしてもよい。また、当初より第２開口部２３を省略し、端部開口部２５から冷陰極蛍光灯１を挿入するように構成してもよい。   (F) Although not particularly mentioned in the above embodiment, the heat may not easily escape from the second opening 23 or the end opening 25 formed in the housing 18. For example, in correspondence with the second opening 23 and the end opening 25, a heat-insulating sheet having flexibility that can be expanded when pressed by the cold cathode fluorescent lamp 1 and a shutter that can be opened and closed may be provided. In addition, it is also possible to provide a closing plate that is integrally formed with the support piece 31 and closes the second opening 23 when the support mechanism 13 is in the accommodated state (the first opening 22 is not closed). Good. Alternatively, the second opening 23 may be omitted from the beginning, and the cold cathode fluorescent lamp 1 may be inserted from the end opening 25.

（ｇ）上記実施形態においては、巻芯４１に内蔵されたヒータを、巻取りが開始される際にオフし、その後、巻芯４１が抜取り完了位置に達することによりオンしているが、巻取りが開始される際にオフすることなく、常時オンのままとしてもよい。この場合、巻芯４１がハウジング１８の外部に導出された状態となっても当該巻芯４１の温度低下が抑制される（温度が維持される）。このため、巻芯４１の温度上昇を待つことなく直ちに次の冷陰極蛍光灯１の成形を始めることができ、さらなる生産性の向上を図ることができる。また、成形の途中で、巻芯４１の位置に応じてヒータをオンオフさせる切替制御を行わなくても済み、構成や制御の簡素化を図ることができる。   (G) In the above embodiment, the heater built in the core 41 is turned off when winding is started, and then turned on when the core 41 reaches the extraction completion position. Instead of turning off when taking is started, it may be kept on at all times. In this case, even when the core 41 is led out of the housing 18, the temperature decrease of the core 41 is suppressed (temperature is maintained). For this reason, it is possible to immediately start forming the next cold cathode fluorescent lamp 1 without waiting for the temperature rise of the core 41, and further improve the productivity. Further, it is not necessary to perform switching control for turning on and off the heater according to the position of the core 41 during the molding, and the configuration and control can be simplified.

また、例えば、巻芯４１のうちヒータによって加熱される部位や加熱される温度を適宜変更可能に構成してもよい。加えて、ヒータを省略することも可能である。また、上記実施形態では、巻芯４１の本体部４３の下面から突出する一対の係止突起４４によって冷陰極蛍光灯１の巻取りに際して冷陰極蛍光灯１の中央部を係止しているが、本体部４３の下面に溝を形成することで冷陰極蛍光灯１を係止するよう構成してもよい。   In addition, for example, the portion heated by the heater and the heated temperature in the winding core 41 may be appropriately changed. In addition, the heater can be omitted. In the above embodiment, the center portion of the cold cathode fluorescent lamp 1 is locked when the cold cathode fluorescent lamp 1 is wound by the pair of locking protrusions 44 protruding from the lower surface of the main body 43 of the core 41. The cold cathode fluorescent lamp 1 may be configured to be locked by forming a groove on the lower surface of the main body 43.

１…冷陰極蛍光灯、１１…成形装置、１２…加熱炉、１３…支持機構、１４…巻取り装置、１８…ハウジング、１９…内部空間、２１…下壁部、２２…第１開口部、２３…第２開口部、２８…ガイド突起、３３…位置決め部、４１…巻芯、４３…本体部、４４…係止突起、５１…チャック。   DESCRIPTION OF SYMBOLS 1 ... Cold cathode fluorescent lamp, 11 ... Molding apparatus, 12 ... Heating furnace, 13 ... Supporting mechanism, 14 ... Winding device, 18 ... Housing, 19 ... Internal space, 21 ... Lower wall part, 22 ... 1st opening part, 23 ... 2nd opening part, 28 ... Guide protrusion, 33 ... Positioning part, 41 ... Core, 43 ... Main-body part, 44 ... Locking protrusion, 51 ... Chuck.

Claims (5)

直管状の管形蛍光灯を２重螺旋形状に成形する管形蛍光灯の成形装置において、
前記管形蛍光灯を収容可能な内部空間を有するハウジング、及び、前記内部空間を所定の高温環境とすることができる加熱手段を具備する加熱炉と、
外周面が円柱状をなす本体部、及び、前記本体部の一端部において前記管形蛍光灯の長手方向中央部を係止可能な係止部を備え、前記管形蛍光灯を前記本体部の外周に巻付け可能な巻芯と、
前記巻芯を回転させる機能、及び、前記巻芯を前記回転の軸方向において変位させる機能を有する駆動手段とを備え、
前記内部空間に収容された前記管形蛍光灯を前記係止部で係止した状態で、前記巻芯を回転させつつ前記回転の軸方向において前記係止部が先頭となるようにして前記巻芯を変位させることで、前記管形蛍光灯が前記巻芯に巻き取られるよう構成し、
前記ハウジングには、前記管形蛍光灯のうち前記巻芯に巻き取られた部位、及び、前記巻芯のうち前記管形蛍光灯が巻き付けられた部位を、前記管形蛍光灯の長手方向全域の巻取りが完了する前の段階から、順次前記ハウジングの外部に導出させることのできる導出孔が形成されていることを特徴とする管形蛍光灯の成形装置。 In a tubular fluorescent lamp forming apparatus for forming a straight tubular fluorescent lamp into a double spiral shape,
A housing having an internal space in which the tubular fluorescent lamp can be accommodated, and a heating furnace including a heating means capable of setting the internal space to a predetermined high temperature environment;
A main body having a cylindrical outer peripheral surface, and a locking portion capable of locking a central portion in the longitudinal direction of the tubular fluorescent lamp at one end of the main body. A core that can be wound around the outer periphery;
A drive means having a function of rotating the winding core and a function of displacing the winding core in the axial direction of the rotation;
In a state where the tubular fluorescent lamp accommodated in the internal space is locked by the locking portion, the winding portion is rotated so that the locking portion is at the head in the axial direction of the rotation while rotating the winding core. By displacing the core, the tubular fluorescent lamp is configured to be wound around the core,
In the housing, a portion of the tubular fluorescent lamp wound around the winding core and a portion of the winding core around which the tubular fluorescent lamp is wound are arranged in the entire longitudinal direction of the tubular fluorescent lamp. An apparatus for forming a tubular fluorescent lamp is characterized in that a lead-out hole that can be led out to the outside of the housing sequentially is formed from the stage before winding of the tube is completed. 前記導出孔は前記ハウジングの下壁部に形成されていることを特徴とする請求項１に記載の管形蛍光灯の成形装置。   2. The tube fluorescent lamp forming apparatus according to claim 1, wherein the lead-out hole is formed in a lower wall portion of the housing. 前記巻芯には自身を加熱する巻芯加熱手段が設けられていることを特徴とする請求項１又は２に記載の管形蛍光灯の成形装置。   3. The tubular fluorescent lamp forming apparatus according to claim 1, wherein a core heating means for heating the core is provided on the core. 前記導出孔から導出された前記管形蛍光灯を保持する保持手段を備え、
前記保持手段は、２重螺旋形状に成形された前記管形蛍光灯全体が前記導出孔を介して前記ハウジングの外部に導出された後、前記管形蛍光灯のうち前記導出孔からの導出方向先端部側を保持することを特徴とする請求項１乃至３のいずれかに記載の管形蛍光灯の成形装置。 Holding means for holding the tube-shaped fluorescent lamp led out from the lead-out hole;
The holding means is configured such that after the entire tube-shaped fluorescent lamp formed in a double spiral shape is led out of the housing through the lead-out hole, the lead-out direction from the lead-out hole in the tube-shaped fluorescent lamp The tube fluorescent lamp forming apparatus according to any one of claims 1 to 3, wherein the tip end side is held. 前記巻芯の近傍において、前記ハウジングの内側面から前記内部空間に突出するガイド突起を備え、
前記巻芯の前記係止部に前記管形蛍光灯が係止された状態で前記巻芯が回転しつつ当該回転の軸方向に沿って変位することで、前記管形蛍光灯は、前記巻芯と前記ガイド突起との間に引き込まれるとともに、前記ガイド突起に圧接して曲げ加工されつつ、前記巻芯の外周に巻き付けられることを特徴とする請求項１乃至４のいずれかに記載の管形蛍光灯の成形装置。 In the vicinity of the core, a guide protrusion that protrudes from the inner surface of the housing into the internal space,
The tube fluorescent lamp is displaced in the axial direction of the rotation while rotating the core while the tube fluorescent lamp is locked to the locking portion of the core. 5. The tube according to claim 1, wherein the tube is drawn between a core and the guide protrusion, and is wound around an outer periphery of the core while being bent and pressed against the guide protrusion. Forming device for fluorescent lamps.
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