JP2007099292A - Protective cover for luminescent lamp - Google Patents

Protective cover for luminescent lamp Download PDF

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JP2007099292A
JP2007099292A JP2005287891A JP2005287891A JP2007099292A JP 2007099292 A JP2007099292 A JP 2007099292A JP 2005287891 A JP2005287891 A JP 2005287891A JP 2005287891 A JP2005287891 A JP 2005287891A JP 2007099292 A JP2007099292 A JP 2007099292A
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discharge lamp
protective cover
heat
shrinkable tube
shrinkage
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JP4791126B2 (en
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Tomohiko Honda
友彦 本多
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Orc Manufacturing Co Ltd
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Orc Manufacturing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective cover for a luminescent lamp which reduces damage caused in the event that the luminescent lamp filled with high-pressure noble gas bursts, and is easily attached and detached. <P>SOLUTION: A safety cover protects the luminescent lamp filled with the high pressure gas. The cover is composed of a heat-shrinkable tube 1 in which a cut-away portion 3 of perforations 2 is formed. A surface protective material may be interposed between the heat-shrinkable tube 1 having the perforations 2 formed therein, and the surface of the luminescent lamp 5. Thus, even in the event that the luminescent lamp bursts while being transported or handled, scatter of fragments is prevented, and damage is reduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、放電灯の保護カバーに関し、放電灯を装置に取り付ける際に放電灯に傷や異物などが付着することを防止するとともに、非点灯時における自然破裂、取扱時における衝撃・落下などにより破裂したときに、飛散する破片から人身事故および物損事故を防止するように構成したものである。 The present invention relates to a protective cover for a discharge lamp, which prevents the discharge lamp from being damaged or adhered to the discharge lamp when the discharge lamp is attached to the apparatus, and also causes a natural burst when not lit, an impact / drop during handling, etc. It is configured to prevent personal injury and property damage accidents from debris that scatters when it bursts.

図６に示すように、ショートアーク型放電灯５は、中央の発光管部51と、この発光管部51の両側に形成されたステム部52と、このステム部52の外側に結合された口金部53とにより構成されている。   As shown in FIG. 6, the short arc type discharge lamp 5 includes a central arc tube portion 51, stem portions 52 formed on both sides of the arc tube portion 51, and a base coupled to the outside of the stem portion 52. Part 53.

半導体、液晶パネル、プリント配線板などのパターン形成を行う露光装置の光源として、水銀放電灯が使用されている。水銀放電灯においては、常温でＸｅガス、Ｋｒガス、Ａｒガスなどの希ガスが大気圧以上封入されている。また、映写機やプロジェクターの光源として使用される希ガス型放電灯または水銀放電灯などの金属蒸気放電灯においても、発光管内に常温で大気圧以上の希ガスが封入されている。   A mercury discharge lamp is used as a light source of an exposure apparatus that forms a pattern such as a semiconductor, a liquid crystal panel, and a printed wiring board. In mercury discharge lamps, rare gases such as Xe gas, Kr gas, and Ar gas are enclosed at atmospheric pressure or higher at room temperature. Also, in a metal vapor discharge lamp such as a rare gas discharge lamp or a mercury discharge lamp used as a light source for a projector or a projector, a rare gas having a normal temperature or higher at normal temperature is enclosed in an arc tube.

このショートアーク型放電灯には、Ｘｅガス、Ｋｒガス、Ａｒガスなどの希ガスが、常温で大気圧以上封入された希ガス型放電灯や、常温で大気圧以上の希ガスが封入されている水銀放電灯などの金属蒸気放電灯が用いられている。   In this short arc type discharge lamp, a rare gas discharge lamp in which a rare gas such as Xe gas, Kr gas, Ar gas is sealed at atmospheric pressure or higher, or a rare gas at atmospheric temperature or higher is sealed. Metal vapor discharge lamps such as mercury discharge lamps are used.

このような高圧の希ガスが封入された放電灯を運搬したり、ランプハウス（反射鏡やレンズで構成される光学系）に取付ける際に、放電灯に誤って衝撃を加えたり放電灯を落下させて破損すると、高圧ガスが噴出してガラスの破片を飛散させて人的・物的な危害を生じる可能性があり、特に、ガラスの破片が人の眼に入ると、最悪の場合には失明するなどの危険性があった。また、半導体工場において、放電灯が破損するとクリーンルームの空気を発塵汚染することがあった。   When transporting a discharge lamp filled with such a high-pressure rare gas or installing it in a lamp house (an optical system consisting of a reflector or lens), the discharge lamp is accidentally shocked or dropped. If it breaks, the high-pressure gas may blow out, causing the glass fragments to scatter and cause human and material damage.In particular, if the glass fragments enter the human eye, There was a risk of blindness. In a semiconductor factory, when a discharge lamp is broken, the air in the clean room may be dusted and contaminated.

また、高圧ガスを封入した放電灯においては、放電灯製作時に生じた残留歪や発光管表面のマイクロクラックなどに起因して、非点灯時でも自然破裂することがあった。   Further, in a discharge lamp in which high-pressure gas is sealed, there are cases in which it spontaneously bursts even when it is not lit due to residual strain generated during manufacture of the discharge lamp or microcracks on the surface of the arc tube.

また、封入されたガス体が常温で大気圧以下の放電灯であっても、点灯時に高圧状態となる放電灯であれば、ガラス管の表面に傷やクラックが存在したり、表面に異物が付着して局部的に高温度なったりすると、そこを起点として破裂することが経験的に知られている。   Also, even if the enclosed gas body is a discharge lamp at room temperature and under atmospheric pressure, if it is a discharge lamp that is in a high pressure state when lit, there are scratches and cracks on the surface of the glass tube, and there are foreign objects on the surface. It is empirically known that if it adheres and becomes locally hot, it bursts from that point.

このような運搬時や取扱時における問題を解決するために、放電灯の表面に沿って布類または網類を一周以上巻き付けて、放電灯のステム部または口金部の外側で紐で結束することにより装着して、運搬中や装置に取り付け作業中に、破裂した場合の衝撃を緩和する方法（特許文献１参照）や、自己粘着性シートの保護カバーを放電灯に貼り付けて保護する方法（特許文献２参照）が従来より提案されている。
特開2002-302180号公報 特開2003-160185号公報 To solve such problems during transportation and handling, wrap a piece of cloth or net along the surface of the discharge lamp for at least one turn and bind it with a string outside the stem or base of the discharge lamp. A method of mitigating the impact when ruptured during transportation or attachment to the device (see Patent Document 1), or a method of protecting the self-adhesive sheet by attaching a protective cover to the discharge lamp ( Conventionally, see Patent Document 2).
JP 2002-302180 A Japanese Patent Laid-Open No. 2003-160185

特許文献１に開示された保護方法によると、破裂した場合の耐衝撃性は高いが、取付けおよび取外しの作業に時間がかかり、特に、点灯装置に放電灯を取付けた状態においては、この保護カバーの取外しが面倒であるという問題があった。   According to the protection method disclosed in Patent Document 1, the impact resistance is high when it is ruptured, but it takes time to install and remove, particularly in the state where the discharge lamp is attached to the lighting device. There was a problem that the removal of was troublesome.

特許文献２に開示された方法によると、保護カバーの取付けおよび取外しは簡単であるが、長期間保管すると保護カバーの粘着性が劣化することがあり、また、粘着性の材料を用いているので、放電灯の表面から保護カバーを剥離しても、表面に保護カバーの一部が残存することがあった。そのまま放電灯を点灯すると残存した保護カバーは、放射される光線を遮るために局部的に高温度になって熱的な歪を生じ、この歪が破裂の原因になることがあった。これらの問題点は、特に保管環境により影響される。   According to the method disclosed in Patent Document 2, it is easy to attach and remove the protective cover, but the adhesiveness of the protective cover may deteriorate if stored for a long period of time, and since an adhesive material is used. Even when the protective cover is peeled off from the surface of the discharge lamp, a part of the protective cover may remain on the surface. When the discharge lamp is turned on as it is, the remaining protective cover is locally heated to block the emitted light, causing thermal distortion, and this distortion may cause explosion. These problems are particularly affected by the storage environment.

この発明の放電灯の安全カバーは、点灯時に大気圧より高い圧力状態となるガス体が封入されている放電灯を保護する安全カバーであって、このカバーは、ミシン目の切取部を形成した熱収縮チューブにより構成されている。   The safety cover of the discharge lamp according to the present invention is a safety cover for protecting the discharge lamp in which a gas body that is in a pressure state higher than the atmospheric pressure is enclosed when lit, and this cover formed a perforated cutout portion. It is composed of a heat-shrinkable tube.

この発明の放電灯の保護カバーによると、放電灯の発光管の表面の保護ができ、高圧の希ガスを封入した放電灯が破裂したときに生じる被害を軽減でき、放電灯製造後の取扱い、放電灯を装置に設置および交換を容易に行い得る放電灯保護カバーが提供される。   According to the protective cover of the discharge lamp of the present invention, the surface of the arc tube of the discharge lamp can be protected, damage caused when the discharge lamp filled with a high-pressure rare gas bursts can be reduced, handling after manufacturing the discharge lamp, Provided is a discharge lamp protective cover that can easily install and replace the discharge lamp in the apparatus.

熱収縮チューブのミシン目からの切裂きを容易にすることにより、放電灯を片手で持ったまま、または、放電灯を装置に設置したままの状態で、片手で簡単に保護カバーを取り外すことができる。   By making the heat-shrinkable tube easy to tear from the perforation, you can easily remove the protective cover with one hand while holding the discharge lamp with one hand or with the discharge lamp installed in the equipment. it can.

この発明の保護カバーを適用する放電灯は、図６に示すように、中央の発光管部51および両側に形成されたステム部52とりなるガラス管部と、このステム部52の端部に結合された口金部53とにより構成されている。   As shown in FIG. 6, the discharge lamp to which the protective cover of the present invention is applied is connected to a central light emitting tube portion 51 and a glass tube portion formed on both sides of the stem portion 52 and an end portion of the stem portion 52. The cap part 53 is formed.

（第１の実施形態）
図１に示すように、端部に切裂きを容易ならしめる切込み21を有する破断用穴列（通称「ミシン目」）２を平行に刻設した切取部３を設けた直径が発光管部51より大きい熱収縮性チューブ１を予め用意する。なお、この熱収縮性チューブ１としてポリ塩化ビニル系の熱収縮性チューブを使用し、その長さは、熱収縮させたときに少なくともガラス管部を覆う程度の長さのものであって、収縮温度が保管温度より高い温度（例えば、８０℃程度）で、収縮時に異物を放出しなくて、取り外し後に異物を残存させないものを選定する。なお、両端に切裂きを容易ならしめる切込み21を入れる代わりに紐などを熱収縮チューブの切取部３に併設しておいてもよいのである。 (First embodiment)
As shown in FIG. 1, the diameter of the arc tube 51 is provided with a cutout portion 3 in which a hole array for rupture (commonly referred to as “perforation”) 2 having cuts 21 for facilitating the tearing at the end portion is provided in parallel. A larger heat-shrinkable tube 1 is prepared in advance. In addition, a polyvinyl chloride heat-shrinkable tube is used as the heat-shrinkable tube 1, and its length is at least long enough to cover the glass tube portion when heat-shrinked. A temperature that is higher than the storage temperature (for example, about 80 ° C.) and that does not release foreign matter during shrinkage and does not leave foreign matter after removal is selected. It should be noted that a string or the like may be provided in the cut-out portion 3 of the heat-shrinkable tube in place of the notch 21 that facilitates tearing at both ends.

なお、ミシン目による切裂きに大きな力が必要であると、その力によって発光管が破損したり、装置を構成する部品を破損させたりするなどの不具合を生じるので、ミシン目による切裂きは弱い力で容易に行えるように考慮する必要がある。   In addition, if a large force is required for tearing by the perforation, the arc tube may be damaged by the force, or the components constituting the device may be damaged. Therefore, the tearing by the perforation is weak. It is necessary to consider so that it can be easily done with force.

ミシン目２の穴を大きくまたは穴の間隔を小さく刻設すると、ミシン目の切裂きは容易であるが、高圧ガス封入の放電灯が破裂した場合の耐衝撃性が低くなる。また、1つのミシン目２の穴を過大に刻設すると、ガラス管部の露出部分が多くなって、ガラス管部保護の効果が得られない。   If the holes of the perforation 2 are made larger or the interval between the holes is made smaller, the perforation is easy to tear, but the impact resistance when the discharge lamp filled with high-pressure gas bursts is lowered. Moreover, when the hole of one perforation 2 is engraved excessively, the exposed part of the glass tube part increases and the effect of protecting the glass tube part cannot be obtained.

これに対して、ミシン目２の穴を小さくまたは穴の間隔を大きく刻設すると、高圧封入の放電灯が破裂した場合の耐衝撃性が高くなるが、ミシン目の切裂きが困難となる。   On the other hand, when the holes of the perforation 2 are made small or the intervals between the holes are made large, the impact resistance when the high-pressure sealed discharge lamp is ruptured becomes high, but the perforation is difficult to tear.

そこで、このような相反する条件を満たして「ミシン目」として機能するように、穴の大きさ、穴の間隔、穴の形状などを設定しなければならない。   Therefore, the hole size, hole interval, hole shape, and the like must be set so as to satisfy such conflicting conditions and function as a “perforation”.

図２に示すように、この熱収縮性チューブ１の中央部をガラス管部の中央部と一致させ、ミシン目２が前面に向くように、熱収縮性チューブ１の中に放電灯５を挿通したのち、ドライヤー等の温風加熱器や、オーブン等の定温加熱器を用いて加熱収縮させることにより、図３に示すように、ガラス管部の表面に密着させた保護カバー４を形成することができる。   As shown in FIG. 2, the discharge lamp 5 is inserted into the heat-shrinkable tube 1 so that the center of the heat-shrinkable tube 1 coincides with the center of the glass tube and the perforation 2 faces the front. After that, as shown in FIG. 3, the protective cover 4 is formed in close contact with the surface of the glass tube part by heating and shrinking using a warm air heater such as a dryer or a constant temperature heater such as an oven. Can do.

熱収縮チューブ１をステム部52に密着するまで熱収縮させておくと、高圧ガス封入放電灯の破裂時においても、ステム部52の管軸方向に対する耐衝撃性を高くすることができる。   If the heat-shrinkable tube 1 is heat-shrinked until it is in close contact with the stem portion 52, the impact resistance of the stem portion 52 in the tube axis direction can be increased even when the high-pressure gas-filled discharge lamp is ruptured.

放電灯５から保護カバー４を剥離する際には、切取部３の切込み21を指先で持ち、これを軸方向にミシン目２に沿って引っ張ることにより切取部３を切裂いて、保護カバー４全体を放電灯５から除去することができる。   When the protective cover 4 is peeled off from the discharge lamp 5, the notch 21 of the cutout portion 3 is held with a fingertip, and the cutout portion 3 is cut by pulling it along the perforation 2 in the axial direction. The whole can be removed from the discharge lamp 5.

（第２の実施形態）
熱収縮チューブのみで、放電灯の表面を保護するには、耐衝撃性の厚くて硬い熱収縮チューブを用いる必要がある。 (Second Embodiment)
In order to protect the surface of the discharge lamp with only a heat-shrinkable tube, it is necessary to use a heat-shrinkable tube that is shock-resistant and thick.

また、放電灯５のガラス管部に熱収縮性チューブ１を直接接触させると、熱収縮チューブ１が熱収縮時に異物を放出してガラス管部に接触させたり、剥離時に一部の熱収縮チューブ１が残存することがあるので、ガラス管部を保護材（ビニルシート、無塵紙、布、網、凹凸を形成したシートなど）で覆ってから、熱収縮性チューブ１の中に挿通したのち、加熱収縮させる。   Further, when the heat-shrinkable tube 1 is brought into direct contact with the glass tube portion of the discharge lamp 5, the heat-shrinkable tube 1 emits foreign matter when it is heat-shrinked and makes contact with the glass tube portion. 1 may remain, so after covering the glass tube part with a protective material (vinyl sheet, dust-free paper, cloth, net, sheet with irregularities, etc.) and then inserting it into the heat-shrinkable tube 1, Shrink with heat.

この保護材としては、ガラス管部の表面に傷をつけず、高温状態で長期間保管されてもガラス管部の表面に異物を残存させないで、取り外しが簡単であること、熱収縮性チューブ１の収縮時に放出する異物を遮蔽し、かつ、ガラス管部の表面に密着し難いものであることが望ましい。   As this protective material, the surface of the glass tube part is not damaged, and even if it is stored at a high temperature for a long time, no foreign matter remains on the surface of the glass tube part. It is desirable that the foreign matter released at the time of shrinkage is shielded and hardly adheres to the surface of the glass tube portion.

このように保護材を併用すると、薄くて耐衝撃性が小さい熱収縮チューブ１を用いても、ミシン目２の切裂きが容易で、耐衝撃性のある放電灯の包装を行うことができる。また、熱収縮チューブ１に耐衝撃性の高いが異物を放出する材料を用いても、保護材により、ガラス管部の表面に異物が残ることがない包装を行うことができる。   When the protective material is used in this way, even if the heat-shrinkable tube 1 that is thin and has low impact resistance is used, the perforation 2 can be easily torn and an impact-resistant discharge lamp can be packaged. Further, even when a material having a high impact resistance but releasing foreign matter is used for the heat shrinkable tube 1, the protective material can be used for packaging in which no foreign matter remains on the surface of the glass tube portion.

（第３の実施形態）
第２の実施形態においては、保護材は熱収縮チューブ１と別々のものであるので、保護材を取り忘れることがある。そこで、第３の実施形態においては、熱収縮前の熱収縮チューブ１の内側に保護材を予め接着剤で貼り付けたり、スポット的に熱溶着して一体化しておくと、剥離時に保護材と熱収縮チューブ１とを同時に取り除くことができる。 (Third embodiment)
In the second embodiment, since the protective material is separate from the heat shrinkable tube 1, the protective material may be forgotten. Therefore, in the third embodiment, when a protective material is attached in advance to the inner side of the heat shrinkable tube 1 before heat shrinking with an adhesive, or by heat welding in a spot manner and integrated, The heat shrinkable tube 1 can be removed at the same time.

（第４の実施形態）
放電灯のガラス管部は、中央の発光管部51およびステム部52からなり、その外径が全長にわたって大きく変化しているので、熱収縮性チューブ１に形成するミシン目２として、全長にわたって同じ大きさの穴を同じピッチで刻設すると、熱収縮後に外径が大きい発光管部51においては穴が大きくなり、外径が小さいステム部52においては穴も収縮して小さくなる。 (Fourth embodiment)
The glass tube portion of the discharge lamp is composed of a central arc tube portion 51 and a stem portion 52, and the outer diameter thereof is greatly changed over the entire length. Therefore, the perforation 2 formed in the heat-shrinkable tube 1 is the same over the entire length. When the holes having the same size are engraved at the same pitch, the holes are enlarged in the arc tube portion 51 having a large outer diameter after heat shrinkage, and the holes are also contracted and reduced in the stem portion 52 having a small outer diameter.

したがって、熱収縮後にミシン目２の穴が大きい部分では破断が容易であるが、ミシン目２の穴が小さい部分では破断し難くなり、切取部３の端部を指で引っ張るとき、切裂きに必要な力を加減しながら引っ張らなければならない。   Therefore, it is easy to break at a portion where the hole of the perforation 2 is large after heat shrinkage, but it is difficult to break at a portion where the hole of the perforation 2 is small, and when the end of the cutout portion 3 is pulled with a finger, It must be pulled while adjusting the necessary force.

そこで、この第４の実施形態においては、熱収縮前の熱収縮性チューブ１にあけるミシン目として、図４（ａ）に示すように、熱収縮後に外径が大きい発光管部51に当たる部分では小さい穴23を刻設し、外径が小さいステム部52に当たる収縮が大きい部分では大きな穴24を刻設して、熱収縮後の各穴の大きさがほぼ等しくなるように構成する。   Therefore, in the fourth embodiment, as a perforation in the heat-shrinkable tube 1 before heat shrinkage, as shown in FIG. 4 (a), in a portion that hits the arc tube portion 51 having a large outer diameter after heat shrinkage. A small hole 23 is engraved, and a large hole 24 is engraved in a portion where the shrinkage hitting the stem portion 52 having a small outer diameter is large so that the size of each hole after heat shrinkage is substantially equal.

このように熱収縮後のミシン目２の各穴の大きさをほぼ等しくしても、外径が小さいステム部52における熱収縮後の熱収縮性チューブの厚みが大きくなるので、穴の大きさおよび穴の間隔を、切取部３の端部を指で引張るときの切裂きに必要な力をほぼ一定化ならしめるように穴の大きさを設定してもよいのである。   Thus, even if the size of each hole of the perforation 2 after heat shrinkage is substantially equal, the thickness of the heat-shrinkable tube after heat shrinkage in the stem portion 52 having a small outer diameter becomes large. In addition, the size of the holes may be set so that the force necessary for tearing when the end of the cutout portion 3 is pulled with a finger is made substantially constant.

（第５の実施形態）
熱収縮前の熱収縮性チューブ１にあけるミシン目２として、熱収縮後に外径が大きい発光管部51に当たる部分では大きなピッチで穴を刻設し、外径が小さいステム部52に当たる収縮が大きい部分では小さなピッチで穴を刻設して、熱収縮後の切裂きに必要な力をほぼ等しくなるように構成する。 (Fifth embodiment)
As the perforation 2 in the heat-shrinkable tube 1 before heat shrinkage, holes are engraved at a large pitch in the portion that hits the arc tube portion 51 having a large outer diameter after heat shrinkage, and the shrinkage that hits the stem portion 52 having a small outer diameter is large. In the part, holes are cut at a small pitch so that the force required for tearing after heat shrinkage is almost equal.

（第６の実施形態）
切取部３の端部を指で引張って切裂くときの切裂きを容易にするために、図４（ｂ）に示すように、両端部分に平行な複数列のミシン目22を形成して、切裂きの開始時に必要な力を緩和させるように構成する。 (Sixth embodiment)
In order to facilitate tearing when the end of the cutout portion 3 is pulled with a finger, as shown in FIG. 4 (b), a plurality of perforations 22 parallel to both end portions are formed, Configure to relieve the force required at the beginning of the tear.

（第７の実施形態）
第２の実施形態および第３の実施形態においては、放電灯５の発光管部およびステム部よりなるガラス管部を熱収縮性チューブ１と直接接触させないようにシート状の保護材を介在させている。 (Seventh embodiment)
In the second embodiment and the third embodiment, a sheet-shaped protective material is interposed so that the glass tube portion composed of the arc tube portion and the stem portion of the discharge lamp 5 is not in direct contact with the heat-shrinkable tube 1. Yes.

この第７の実施形態においては、シート状の保護材の代わりに、ＰＥＴなどの合成樹脂シートを真空成型またはブロー成型して、放電灯の外形に合わせた容器の半体６を用意する。そして、図５の斜視図に示すように、２つの容器の半体６で放電灯を挟むように包んでから、ミシン目を刻設した熱収縮性チューブに挿通して、熱収縮性チューブを加熱収縮させて包装材を形成する。   In the seventh embodiment, instead of a sheet-like protective material, a synthetic resin sheet such as PET is vacuum-molded or blow-molded to prepare a container half 6 that matches the outer shape of the discharge lamp. Then, as shown in the perspective view of FIG. 5, after wrapping the discharge lamp between the two container halves 6, the heat shrinkable tube is inserted into the heat shrinkable tube with perforations. Heat-shrink to form a packaging material.

熱収縮性チューブの収縮温度よりも軟化温度が高い合成樹脂シートを用いて容器を成型しておくと、熱収縮性チューブを加熱収縮させたとき、合成樹脂製の容器は放電灯の外形に沿うように弾性を有する状態で変形するので、ガタツクことなく放電灯を保護することができる。   If a container is molded using a synthetic resin sheet that has a softening temperature higher than the shrinkage temperature of the heat-shrinkable tube, when the heat-shrinkable tube is heated and shrunk, the synthetic resin container follows the outer shape of the discharge lamp. In this way, the discharge lamp can be protected without rattling.

ＰＥＴなどの合成樹脂製の容器は、装着するときにも取り外すときにも異物を発生したり、ガスを発生することがないので好都合である。なお、２つの容器の半体６の代わりに、２つの半体を屈曲可能なヒンジで連結して一体成型した容器を使用してもよいのである。   A container made of synthetic resin such as PET is advantageous because it does not generate foreign matter or generate gas when it is attached or removed. Instead of the two container halves 6, a container in which the two halves are connected by a bendable hinge and integrally molded may be used.

本発明の一実施形態に係る熱収縮チューブの一例を示す図、The figure which shows an example of the heat shrinkable tube which concerns on one Embodiment of this invention, 熱収縮チューブに放電灯を挿通した状態を示す図、The figure which shows the state which inserted the discharge lamp in the heat contraction tube, 熱収縮チューブを収縮させて放電灯を保護した状態を示す図、本発明の他の実施形態のトレイ状の放電灯表面保護材で放電灯を覆った状態を示す図、The figure which shows the state which shrunk the heat contraction tube, and protected the discharge lamp, The figure which shows the state which covered the discharge lamp with the tray-shaped discharge lamp surface protective material of other embodiment of this invention, 本発明の他の実施形態の熱収縮チューブの熱収縮前の状態を示す図、The figure which shows the state before heat shrink of the heat contraction tube of other embodiment of this invention, 本発明の他の実施形態を示し、放電灯を合成樹脂シートを成型した容器で包んだ状態を示す図、The figure which shows other embodiment of this invention, and shows the state which wrapped the discharge lamp with the container which shape | molded the synthetic resin sheet, 本発明の放電灯の保護カバーを適用する放電灯を示す図である。It is a figure which shows the discharge lamp which applies the protective cover of the discharge lamp of this invention.

符号の説明Explanation of symbols

１ 熱収縮性チューブ
２ ミシン目
21 切込み
３ 切取部
４ 保護カバー
５ 放電灯
51 発光管部
52 ステム部
53 口金部
６ 合成樹脂シートを成型した容器の半体
1 Heat shrinkable tube 2 Perforation
21 Cutting 3 Cutting part 4 Protective cover 5 Discharge lamp
51 arc tube
52 Stem
53 Base 6 Half of container molded synthetic resin sheet

Claims (8)

点灯時に大気圧より高い圧力状態となるガス体が封入されている放電灯を保護する安全カバーであって、該カバーは、ミシン目の切取部を形成した熱収縮チューブにより構成されていることを特徴とする放電灯の保護カバー。   It is a safety cover that protects a discharge lamp in which a gas body that is in a pressure state higher than atmospheric pressure is enclosed when lit, and that the cover is constituted by a heat shrinkable tube having a perforated cutout portion. Features a protective cover for the discharge lamp. ガラス管部を直接覆う保護材と併用したことを特徴とする請求項１に記載の放電灯の保護カバー。   The protective cover for a discharge lamp according to claim 1, wherein the protective cover is used in combination with a protective material that directly covers the glass tube portion. ガラス管部を直接覆う保護材を熱収縮チューブの内側に予め接合したことを特徴とする請求項２に記載の放電灯の保護カバー。   The protective cover for a discharge lamp according to claim 2, wherein a protective material that directly covers the glass tube portion is bonded in advance to the inside of the heat shrinkable tube. 熱収縮後に外径が大きい発光管部に当たる収縮が小さい部分には小さい穴を刻設し、外径が小さいステム部に当たる収縮が大きい部分には大きな穴を刻設したミシン目を有することを特徴とする請求項１に記載の放電灯の保護カバー。   It is characterized by having a perforation with a small hole engraved in the small shrinkage portion that hits the arc tube portion with a large outer diameter after heat shrinkage and a large hole cut in the large shrinkage portion that hits the stem portion with a small outer diameter. The protective cover for a discharge lamp according to claim 1. 熱収縮後に外径が大きい発光管部に当たる部分には大きいピッチで穴を刻設し、外径が小さいステム部に当たる収縮が大きい部分には小さいピッチで穴を刻設したミシン目を有することを特徴とする請求項１に記載の放電灯の保護カバー。   It has a perforation with a large pitch in the part that hits the arc tube with a large outer diameter after heat shrinkage and a small pitch in the part with a large shrinkage that hits the stem with a small outer diameter. The protective cover of the discharge lamp of Claim 1 characterized by the above-mentioned. 両端部分に複数列のミシン目を形成したことを特徴とする請求項１に記載の放電灯の保護カバー。   The discharge lamp protective cover according to claim 1, wherein a plurality of rows of perforations are formed at both ends. ガラス管部を直接覆う合成樹脂シートを成型した放電灯を包む容器を併用したことを特徴とする請求項１に記載の放電灯の保護カバー。   2. A protective cover for a discharge lamp according to claim 1, wherein a container enclosing a discharge lamp formed by molding a synthetic resin sheet directly covering the glass tube portion is used in combination. 合成樹脂シートを成型した容器の軟化温度が、熱収縮性チューブの熱収縮温度よりも高いことを特徴とする請求項７に記載の放電灯の保護カバー。
The protective cover for a discharge lamp according to claim 7, wherein the softening temperature of the container in which the synthetic resin sheet is molded is higher than the heat shrinkage temperature of the heat shrinkable tube.
JP2005287891A 2005-09-30 2005-09-30 Protective cover for discharge lamp Expired - Fee Related JP4791126B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007091235A (en) * 2005-09-27 2007-04-12 Orc Mfg Co Ltd Protective cover for luminescent lamp and lighting device
JP2014229414A (en) * 2013-05-21 2014-12-08 株式会社オーク製作所 Protective cover device for lamp, lamp with cover device and attachment method for lamp holder of lamp
JP2019126535A (en) * 2018-01-24 2019-08-01 株式会社吉田製作所 Dental handpiece, dental handpiece control system and manufacturing method of dental handpiece

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Publication number Priority date Publication date Assignee Title
JP2001206473A (en) * 2000-12-22 2001-07-31 Matsushita Electric Ind Co Ltd Packaging container for fluorescent lamp
JP2002302180A (en) * 2001-04-05 2002-10-15 Orc Mfg Co Ltd Safety cover for discharge lamp
JP2004123213A (en) * 2002-10-07 2004-04-22 Fuji Seal Inc Heat shrinkable film with perforated line and forming method of perforated line
JP2005166642A (en) * 2004-10-27 2005-06-23 Osram-Melco Ltd Scatter prevention type fluorescent lamp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001206473A (en) * 2000-12-22 2001-07-31 Matsushita Electric Ind Co Ltd Packaging container for fluorescent lamp
JP2002302180A (en) * 2001-04-05 2002-10-15 Orc Mfg Co Ltd Safety cover for discharge lamp
JP2004123213A (en) * 2002-10-07 2004-04-22 Fuji Seal Inc Heat shrinkable film with perforated line and forming method of perforated line
JP2005166642A (en) * 2004-10-27 2005-06-23 Osram-Melco Ltd Scatter prevention type fluorescent lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007091235A (en) * 2005-09-27 2007-04-12 Orc Mfg Co Ltd Protective cover for luminescent lamp and lighting device
JP2014229414A (en) * 2013-05-21 2014-12-08 株式会社オーク製作所 Protective cover device for lamp, lamp with cover device and attachment method for lamp holder of lamp
JP2019126535A (en) * 2018-01-24 2019-08-01 株式会社吉田製作所 Dental handpiece, dental handpiece control system and manufacturing method of dental handpiece

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