JP6826711B2 - lamp - Google Patents

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JP6826711B2
JP6826711B2 JP2016233539A JP2016233539A JP6826711B2 JP 6826711 B2 JP6826711 B2 JP 6826711B2 JP 2016233539 A JP2016233539 A JP 2016233539A JP 2016233539 A JP2016233539 A JP 2016233539A JP 6826711 B2 JP6826711 B2 JP 6826711B2
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arc tube
shaft members
protective member
support frame
enclosure
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JP2018092745A (en
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中野 邦昭
中野  邦昭
毅 片桐
毅 片桐
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株式会社拓洋理研
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  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

本発明は、ランプに関する。 The present invention relates to a lamp.

屋内外の施設の照明装置、船舶に搭載される集魚灯及び水中灯等のランプとして、外囲器内に発光管を備えるランプが既知である。例えば、特許文献1に記載されるランプは、一対の電極を有する発光管が、2つのステム線によって外囲器としての外管内に支持される構成を有している。さらに、外管に封止固着されたステムガラスが、2つのステム線を備える。外管の先端付近において、発光管の一方の電極に接続された外部リード線が、一方のステム線に固定支持された絶縁リングによって挿通支持される。外部リード線と一方のステム線とは、軟導線を介して接続されている。外管の基部付近において、他方のステム線が、発光管の他方の電極に接続された外部リード線に溶接接続されている。 Lamps equipped with an arc tube inside the enclosure are known as lighting devices for indoor and outdoor facilities, fish collecting lamps and underwater lamps mounted on ships. For example, the lamp described in Patent Document 1 has a configuration in which an arc tube having a pair of electrodes is supported in an outer tube as an outer shell by two stem wires. Further, the stem glass sealed and fixed to the outer tube includes two stem wires. Near the tip of the outer tube, an external lead wire connected to one electrode of the arc tube is inserted and supported by an insulating ring fixedly supported by one stem wire. The external lead wire and one stem wire are connected via a soft lead wire. Near the base of the outer tube, the other stem wire is welded to the outer lead wire connected to the other electrode of the arc tube.

特開平6−338294号公報Japanese Unexamined Patent Publication No. 6-338294

特許文献1に記載されるランプでは、ランプ点灯中の熱によって生じる発光管の伸長差は、外部リード線が絶縁リングに挿通されていることによって、吸収される。この場合、ランプは、ステムガラスから外管の先端に向かう方向に伸長する。例えば、ランプ全長を短くするために、外管の先端と発光管の電極との距離を小さくすると、伸長時に発光管の電極が絶縁リングに接触し拘束を受ける可能性がある。これにより、他方のステム線と外部リード線との接続部分に負荷がかかり、これらの溶接接続が外れる場合がある。つまり、点灯中の熱によってランプの構成要素が影響を受けるという問題がある。 In the lamp described in Patent Document 1, the extension difference of the arc tube caused by the heat while the lamp is lit is absorbed by the external lead wire being inserted through the insulating ring. In this case, the lamp extends from the stem glass toward the tip of the outer tube. For example, if the distance between the tip of the outer tube and the electrode of the arc tube is reduced in order to shorten the total length of the lamp, the electrode of the arc tube may come into contact with the insulating ring during extension and be restrained. As a result, a load is applied to the connection portion between the other stem wire and the external lead wire, and these welded connections may be disconnected. That is, there is a problem that the components of the lamp are affected by the heat during lighting.

本発明は、上述のような問題を解決するためになされたものであり、点灯中の熱によって構成要素が受ける影響を低減するランプを提供する。 The present invention has been made to solve the above-mentioned problems, and provides a lamp that reduces the influence of heat during lighting on components.

本発明の一態様に係るランプは、透光性を有する外囲器と、前記外囲器内に配置される発光管と、前記外囲器内に配置され且つ前記発光管を支持する支持枠であって、前記外囲器の先端部から基部に向かう方向に延びる2つの軸部材を有し、前記2つの軸部材の間に前記発光管を支持し、前記外囲器の先端側で固定される支持枠とを備える。 The lamp according to one aspect of the present invention includes a translucent enclosure, an arc tube arranged in the enclosure, and a support frame arranged in the enclosure and supporting the arc tube. It has two shaft members extending in a direction from the tip end portion of the outer enclosure to the base portion, supports the arc tube between the two shaft members, and is fixed on the tip end side of the outer enclosure. It is provided with a support frame to be used.

本発明に係るランプによれば、点灯中の熱によって構成要素が受ける影響が低減する。 According to the lamp according to the present invention, the influence of the heat during lighting on the components is reduced.

本発明の実施の形態に係るランプの構成を示す概念的な側面図である。It is a conceptual side view which shows the structure of the lamp which concerns on embodiment of this invention. 図1のランプを異なる方向から見た概念的な側面図である。It is a conceptual side view which looked at the lamp of FIG. 1 from a different direction. 図1のランプの点灯時の状態を示す概念的な側面図である。It is a conceptual side view which shows the state at the time of lighting of the lamp of FIG. 図2のランプの点灯時の状態を示す概念的な側面図である。It is a conceptual side view which shows the state at the time of lighting of the lamp of FIG.

以下において、図面を参照しつつ、本発明の実施の形態に係るランプを説明する。なお、以下で説明する実施の形態は、本発明の好ましい一具体例を示すものである。以下の実施の形態で示される数値、形状、材料、構成要素、並びに構成要素の配置位置及び接続形態等は、一例であり、本発明を限定する主旨ではない。また、以下の実施の形態における構成要素のうち、最上位概念を示す独立請求項に記載されていない構成要素については、任意の構成要素として説明される。 Hereinafter, the lamp according to the embodiment of the present invention will be described with reference to the drawings. The embodiments described below show a preferred specific example of the present invention. Numerical values, shapes, materials, components, arrangement positions of components, connection forms, etc. shown in the following embodiments are examples, and are not intended to limit the present invention. Further, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept are described as arbitrary components.

また、添付の図面における各図は、模式的な図であり、必ずしも厳密に図示されたものでない。さらに、各図において、同一又は同様な構成要素については同じ符号を付している。また、以下の実施の形態の説明において、略平行、略直交のような「略」を伴った表現が、用いられる場合がある。例えば、略平行とは、完全に平行であることを意味するだけでなく、実質的に平行である、すなわち、例えば数%程度の差異を含むことも意味する。他の「略」を伴った表現についても同様である。 In addition, each figure in the attached drawings is a schematic view and is not necessarily exactly illustrated. Further, in each figure, the same or similar components are designated by the same reference numerals. In addition, in the following description of the embodiment, expressions with "abbreviations" such as substantially parallel and substantially orthogonal may be used. For example, substantially parallel means not only completely parallel, but also substantially parallel, that is, including a difference of, for example, about several percent. The same applies to other expressions with "abbreviations".

[実施の形態]
実施の形態に係るランプ100の構成を説明する。図1及び図2を参照すると、ランプ100が、互いに異なる方向から見た側面図で示されている。なお、図1は、実施の形態に係るランプ100の構成を示す概念的な側面図である。図2は、図1のランプ100を異なる方向から見た概念的な側面図である。図1でランプ100を見る方向と、図2でランプ100を見る方向とは、略垂直である。図1及び図2は、消灯状態のランプ100を示す。ランプ100は、透光性を有する外囲器1と、外囲器1内に配置される発光管2と、外囲器1内に配置され且つ発光管2を支持する支持枠3とを備える。
[Embodiment]
The configuration of the lamp 100 according to the embodiment will be described. With reference to FIGS. 1 and 2, the lamps 100 are shown in side views as viewed from different directions. Note that FIG. 1 is a conceptual side view showing the configuration of the lamp 100 according to the embodiment. FIG. 2 is a conceptual side view of the lamp 100 of FIG. 1 as viewed from different directions. The direction in which the lamp 100 is viewed in FIG. 1 and the direction in which the lamp 100 is viewed in FIG. 2 are substantially vertical. 1 and 2 show the lamp 100 in the extinguished state. The lamp 100 includes a translucent outer enclosure 1, a light emitting tube 2 arranged in the outer enclosure 1, and a support frame 3 arranged in the outer enclosure 1 and supporting the arc tube 2. ..

中空構造の外囲器1は、ランプ100の外殻を構成し、内部に空間を形成する。外囲器1は、透光性を有する部材で構成され、例えば、透明又は半透明である。外囲器1は、硬質ガラス若しくは石英ガラスなどのガラス材、又は樹脂等で構成される。限定するものではないが、本実施の形態では、外囲器1は、楕円球状の外形を有している。しかしながら、外囲器1は、球、円筒等のいかなる外形を有してもよい。 The hollow structure outer shell 1 constitutes the outer shell of the lamp 100 and forms a space inside. The outer enclosure 1 is made of a translucent member, and is, for example, transparent or translucent. The outer enclosure 1 is made of a glass material such as hard glass or quartz glass, resin, or the like. Although not limited to, in the present embodiment, the outer enclosure 1 has an elliptical spherical outer shape. However, the enclosure 1 may have any outer shape such as a sphere or a cylinder.

外囲器1は、楕円球状の本体部1aと、本体部1aの長手軸A方向の一方の端部の先端部1bと、本体部1aの長手軸A方向の他方の端部の基部1cとを一体的に含む。本体部1aの長手軸Aは、楕円球の長軸に対応し、先端部1bから基部1cに向かう方向に延びる。長手軸Aは、外囲器1の中心軸を構成する。先端部1bは、有底筒状の形状を有し、基部1cは、筒状の形状を有している。先端部1bの内部空間、基部1cの内部空間及び本体部1aの内部空間は、互いに連通し、外囲器1の1つの内部空間を一緒に形成する。また、基部1cは、本体部1aと反対側の端部に、外囲器1の内部空間を外部に連通する開口部を形成している。 The outer enclosure 1 includes an elliptical spherical main body portion 1a, a tip portion 1b of one end portion of the main body portion 1a in the longitudinal axis A direction, and a base portion 1c of the other end portion of the main body portion 1a in the longitudinal axis A direction. Is included integrally. The longitudinal axis A of the main body 1a corresponds to the major axis of the ellipsoidal sphere and extends in the direction from the tip 1b toward the base 1c. The longitudinal axis A constitutes the central axis of the enclosure 1. The tip portion 1b has a bottomed tubular shape, and the base portion 1c has a tubular shape. The internal space of the tip portion 1b, the internal space of the base portion 1c, and the internal space of the main body portion 1a communicate with each other to form one internal space of the outer enclosure 1 together. Further, the base portion 1c forms an opening at an end opposite to the main body portion 1a so as to communicate the internal space of the outer enclosure 1 to the outside.

先端部1b及び基部1cはいずれも、本体部1aを大幅に先細にするような形状を有している、つまり、長手軸Aに垂直な方向で本体部1aよりも大幅に絞られた断面を有している。よって、本体部1aは、先端部1b及び基部1cに対して、長手軸Aに垂直な方向に外囲器1の内部空間を拡大した部位である。上述のような先端部1b及び基部1cは、外囲器1の先細部分を構成し、本体部1aは、外囲器1の拡大部分を構成する。後述するように、本体部1a内に発光管2が配置されるため、発光管2の発熱の影響を低減するために、本体部1aは、発光管2から離れた位置に外殻を形成する。また、後述するように、先端部1bには、発光管2の保持部材3dが配置され、基部1cには、発光管2の保持部材3eが配置されるため、先端部1b及び基部1cは、内部に支持枠3並びに保持部材3d及び3eが収まる程度の大きさの外殻を形成する。 Both the tip portion 1b and the base portion 1c have a shape in which the main body portion 1a is significantly tapered, that is, a cross section that is significantly narrowed compared to the main body portion 1a in the direction perpendicular to the longitudinal axis A. Have. Therefore, the main body portion 1a is a portion in which the internal space of the outer enclosure 1 is expanded in the direction perpendicular to the longitudinal axis A with respect to the tip portion 1b and the base portion 1c. The tip portion 1b and the base portion 1c as described above form a tapered portion of the outer enclosure 1, and the main body portion 1a constitutes an enlarged portion of the outer enclosure 1. As will be described later, since the arc tube 2 is arranged in the main body 1a, the main body 1a forms an outer shell at a position away from the arc tube 2 in order to reduce the influence of heat generation of the arc tube 2. .. Further, as will be described later, since the holding member 3d of the arc tube 2 is arranged on the tip portion 1b and the holding member 3e of the arc tube 2 is arranged on the base portion 1c, the tip portion 1b and the base portion 1c are arranged. An outer shell having a size large enough to accommodate the support frame 3 and the holding members 3d and 3e is formed inside.

ランプ100は、外囲器1の基部1cの開口部に接続される口金4を備えている。口金4は、ランプ100における電気機器との物理的及び電気的な接続部分を構成する。口金4の内側には、ステム5が配置されている。ステム5は、口金4に固定され、口金4から延びる2つの電気導入線6a及び6bを互いから離した状態で保持する。 The lamp 100 includes a base 4 connected to the opening of the base 1c of the outer enclosure 1. The base 4 constitutes a physical and electrical connection portion of the lamp 100 with an electric device. A stem 5 is arranged inside the base 4. The stem 5 is fixed to the base 4 and holds the two electrical introduction lines 6a and 6b extending from the base 4 in a state of being separated from each other.

発光管2は、ランプ100の発光部分を構成する。発光管2は、例えば、メタルハライドランプ、高圧ナトリウムランプ、水銀ランプ等の高輝度放電灯の発光部分を構成してもよい。本実施の形態では、発光管2は、メタルハライドランプの発光部分を構成する。発光管2は、例えば、石英ガラス、セラミック等で構成された円筒状の部材である。発光管2の軸心方向の両端に設けられた一対の電極部分2a及び2bはそれぞれ、発光管2の上記材料で構成され、発光管2の電極を支持する。電極部分2a及び2bそれぞれが有する電極は、電気導入線6a及び6bと電気的に接続される。電極部分2a及び2bの電極はそれぞれ、例えば、タングステン等の耐熱性金属で構成された棒状体である電極芯と、当該電極芯の先端部に巻回されたタングステン等の耐熱性金属で構成されたコイルとを有している。ここで、電極部分2a及び2bは、発光管の極の一例である。 The arc tube 2 constitutes a light emitting portion of the lamp 100. The arc tube 2 may form, for example, a light emitting portion of a high-intensity discharge lamp such as a metal halide lamp, a high-pressure sodium lamp, or a mercury lamp. In the present embodiment, the arc tube 2 constitutes a light emitting portion of the metal halide lamp. The arc tube 2 is a cylindrical member made of, for example, quartz glass or ceramic. The pair of electrode portions 2a and 2b provided at both ends of the arc tube 2 in the axial direction are each made of the above-mentioned material of the arc tube 2 and support the electrodes of the arc tube 2. The electrodes of the electrode portions 2a and 2b are electrically connected to the electric introduction lines 6a and 6b, respectively. The electrodes of the electrode portions 2a and 2b are each composed of, for example, an electrode core which is a rod-shaped body made of a heat-resistant metal such as tungsten, and a heat-resistant metal such as tungsten wound around the tip of the electrode core. It has a coil. Here, the electrode portions 2a and 2b are examples of the poles of the arc tube.

発光管2は、電極部分2aを先端部1bへ向け且つ電極部分2bを基部1cへ向けた姿勢で、外囲器1内に配置される。さらに、電極部分2aから電極部分2bにわたる発光管2の全体が、外囲器1の本体部1a内に収まっている。そして、発光管2は、後述するように、支持枠3並びに保持部材3d及び3eを介して、外囲器1の先端部1b及び基部1cの内周面上で支持される。なお、電極部分2a及び2bそれぞれの少なくとも一部が、外囲器1の先端部1b及び基部1c内に位置してもよい。外囲器1において、このような本体部1aは、電極部分2a及び2bの少なくとも一部を含んで発光管2を収容する部位と定義することができる。さらに、外囲器1において、先端部1b及び基部1cはそれぞれ、保持部材3d及び3eを収容する部位と定義することができる。 The arc tube 2 is arranged in the enclosure 1 in a posture in which the electrode portion 2a faces the tip portion 1b and the electrode portion 2b faces the base portion 1c. Further, the entire arc tube 2 extending from the electrode portion 2a to the electrode portion 2b is housed in the main body portion 1a of the outer enclosure 1. Then, as will be described later, the arc tube 2 is supported on the inner peripheral surfaces of the tip portion 1b and the base portion 1c of the outer enclosure 1 via the support frame 3 and the holding members 3d and 3e. At least a part of each of the electrode portions 2a and 2b may be located in the tip portion 1b and the base portion 1c of the enclosure 1. In the outer enclosure 1, such a main body portion 1a can be defined as a portion including at least a part of the electrode portions 2a and 2b and accommodating the arc tube 2. Further, in the outer enclosure 1, the tip portion 1b and the base portion 1c can be defined as a portion accommodating the holding members 3d and 3e, respectively.

発光管2の内部には、例えば、水銀と、主発光金属(Tl、Na、In、Sc等)と、ハロゲンとしての沃素とが封入され、さらにアルゴン等の始動用の希ガスが封入される。なお、主発光金属及びハロゲンは、例えば、TlI等の金属ハロゲン化物の形で発光管10内に封入できる。発光管2は、水銀と金属ハロゲン化物(メタルハライドとも呼ばれる)との高圧の混合蒸気中でのアーク放電により発光する。 Inside the arc tube 2, for example, mercury, a main luminescent metal (Tl, Na, In, Sc, etc.), iodine as a halogen, and a rare gas for starting such as argon are sealed. .. The main light emitting metal and halogen can be sealed in the arc tube 10 in the form of a metal halide such as TlI. The arc tube 2 emits light by arc discharge in a high-pressure mixed vapor of mercury and a metal halide (also referred to as metal halide).

支持枠3は、外囲器1の先端部1bから基部1cに向かう方向に延びる2つの軸部材3a及び3bと、軸部材3a及び3bを互いに間隔をあけた状態で接続する2つの接続部材3cとを備える。接続部材3cは、軸部材3a及び3bの両端付近に配置される。軸部材3a及び3b並びに接続部材3cは、金属等の導電性を有する材料で構成される。本実施の形態では、軸部材3a及び3b並びに接続部材3cを構成する材料は、ステンレスであるが、これに限定されない。軸部材3a及び3bのそれぞれの両端に、保持部材3d及び3eが取り付けられている。保持部材3d及び3eはそれぞれ、外囲器1の先端部1b及び基部1cの内周面に沿うように湾曲した板状の部材であり、軸部材3a又は3bと略垂直に延びる。保持部材3d及び3eは、弾性を有し、例えば、板ばねによって形成されるが、樹脂等で構成されてもよい。本実施の形態では、保持部材3d及び3eを構成する材料は、軸部材3a及び3b等と同様にステンレスであるが、これに限定されない。 The support frame 3 is a two connecting members 3c that connect the two shaft members 3a and 3b extending in the direction from the tip portion 1b of the outer enclosure 1 toward the base portion 1c and the shaft members 3a and 3b in a state of being spaced apart from each other. And. The connecting member 3c is arranged near both ends of the shaft members 3a and 3b. The shaft members 3a and 3b and the connecting member 3c are made of a conductive material such as metal. In the present embodiment, the materials constituting the shaft members 3a and 3b and the connecting member 3c are stainless steel, but the material is not limited thereto. Holding members 3d and 3e are attached to both ends of the shaft members 3a and 3b, respectively. The holding members 3d and 3e are plate-shaped members curved along the inner peripheral surfaces of the tip portion 1b and the base portion 1c of the outer enclosure 1, respectively, and extend substantially perpendicular to the shaft members 3a or 3b. The holding members 3d and 3e have elasticity and are formed of, for example, leaf springs, but may be made of resin or the like. In the present embodiment, the material constituting the holding members 3d and 3e is stainless steel like the shaft members 3a and 3b, but is not limited thereto.

支持枠3は、軸部材3a及び3bの一方の端部を保持部材3dと共に、外囲器1の先端部1bの内側に挿入するように、配置される。このとき、保持部材3dが、先端部1bの内周面に係合し、支持枠3を先端部1bに弾性的に固定する。これにより、支持枠3は、長手軸Aの軸方向及び径方向に固定される。なお、保持部材3dによる支持枠3の固定は、いかなる状態でも外囲器1に対して支持枠3を不動にする強固な固定であってもよく、外囲器1に対して長手軸A方向での支持枠3のスライドを許容する固定であってもよい。後者の場合、例えば、外囲器1を損傷することなく、先端部1bへの支持枠3の挿入及び引き抜きが可能な程度の固定であってもよく、外囲器1に損傷を与えないような通常の使用状態での振動又は衝撃が外囲器1に加えられた際に、支持枠3がスライドしないような固定であってもよい。 The support frame 3 is arranged so that one end of the shaft members 3a and 3b is inserted together with the holding member 3d inside the tip 1b of the outer enclosure 1. At this time, the holding member 3d engages with the inner peripheral surface of the tip portion 1b, and the support frame 3 is elastically fixed to the tip portion 1b. As a result, the support frame 3 is fixed in the axial direction and the radial direction of the longitudinal axis A. The fixing of the support frame 3 by the holding member 3d may be a strong fixing that immobilizes the support frame 3 with respect to the enclosure 1 in any state, and is in the longitudinal axis A direction with respect to the enclosure 1. It may be fixed to allow the support frame 3 to slide in. In the latter case, for example, the support frame 3 may be fixed to the extent that it can be inserted and removed from the tip portion 1b without damaging the enclosure 1, so as not to damage the enclosure 1. The support frame 3 may be fixed so as not to slide when a vibration or impact under normal use conditions is applied to the enclosure 1.

なお、市販される汎用的な外囲器1では、一般的に、先端部1bでの部材厚が、他の部位での部材厚よりも大きい。このため、先端部1bは、比較的高い強度を有する。このような先端部1bは、支持枠3の固定場所として好適であり、支持枠3に確実に且つ安定した固定をもたらすことができる。 In the commercially available general-purpose enclosure 1, the member thickness at the tip portion 1b is generally larger than the member thickness at other portions. Therefore, the tip portion 1b has a relatively high strength. Such a tip portion 1b is suitable as a fixing place for the support frame 3, and can provide a reliable and stable fixing to the support frame 3.

また、上述のように配置された支持枠3において、軸部材3a及び3bの他方の端部は、保持部材3eと共に、外囲器1の基部1cの内側に位置する。保持部材3eは、基部1cの内周面に係合し、長手軸Aの径方向で支持枠3を基部1cに弾性的に固定する。これにより、軸部材3a及び3bは、長手軸Aの径方向に移動しないように保持され、長手軸Aの軸方向には、保持部材3eと共に基部1cに対してスライドできる。本実施の形態では、保持部材3d及び3eは、支持枠3が長手軸A方向にスライドしても先端部1b及び基部1cそれぞれでの係合状態を維持するように、長手軸A方向に間隔をあけて配置されている。 Further, in the support frame 3 arranged as described above, the other ends of the shaft members 3a and 3b are located inside the base portion 1c of the outer enclosure 1 together with the holding member 3e. The holding member 3e engages with the inner peripheral surface of the base portion 1c, and elastically fixes the support frame 3 to the base portion 1c in the radial direction of the longitudinal axis A. As a result, the shaft members 3a and 3b are held so as not to move in the radial direction of the longitudinal axis A, and can slide with respect to the base portion 1c together with the holding member 3e in the axial direction of the longitudinal axis A. In the present embodiment, the holding members 3d and 3e are spaced in the longitudinal axis A direction so that the support frame 3 maintains the engaged state at the tip portion 1b and the base portion 1c even if the support frame 3 slides in the longitudinal axis A direction. It is arranged with an opening.

上述のような支持枠3は、軸部材3a及び3bが先端部1bから基部1cに向かう方向に伸縮できる状態で、先端部1bに固定されていることになる。そして、軸部材3a及び3bは、基部1cにおいて、口金4及びステム5等の外囲器1に固定された構成要素に固定されず、基部1c及び保持部材3eによって、軸部材3a及び3bの軸方向と垂直な方向で保持され、軸方向にスライド可能である。従って、本実施の形態では、支持枠3は、軸部材3a及び3bの軸方向において、先端部1b側でのみ固定される。 The support frame 3 as described above is fixed to the tip portion 1b in a state in which the shaft members 3a and 3b can be expanded and contracted in the direction from the tip portion 1b toward the base portion 1c. The shaft members 3a and 3b are not fixed to the components fixed to the enclosure 1 such as the base 4 and the stem 5 at the base 1c, and the shafts of the shaft members 3a and 3b are formed by the base 1c and the holding member 3e. It is held in the direction perpendicular to the direction and can slide in the axial direction. Therefore, in the present embodiment, the support frame 3 is fixed only on the tip portion 1b side in the axial direction of the shaft members 3a and 3b.

支持枠3の軸部材3a及び3bには、発光管2を軸部材3a及び3bに固定する第一固定部材7aが取り付けられている。第一固定部材7aは、発光管2の発熱に対する耐熱性を有する材料で構成され、さらに、発光管2の電極部分2aと軸部材3a及び3bとへの第一固定部材7aの取り付け及び固定を容易にするように、加工が容易な材料で構成されることが望ましい。例えば、第一固定部材7aは、ステンレス等の金属で構成される。第一固定部材7aは、先端部1bの近傍で、軸部材3aから軸部材3bに架け渡されるように配置されている。第一固定部材7aは、本体部1a内に配置されているが、先端部1b内に位置してもよい。第一固定部材7aは、軸部材3a及び3bに固定されている。さらに、第一固定部材7aと軸部材3a及び3bとの間には、セラミック等の電気的な絶縁性を有する材料で構成された絶縁性部材が介在し、これらの絶縁性部材は、第一固定部材7aと軸部材3a及び3bとを電気的に絶縁する。発光管2は、軸部材3a及び3bの間に配置され、電極部分2aで、第一固定部材7aに取り付けられ固定される。発光管2の電極部分2aの電極は、導電部材を介して軸部材3a及び3bに電気的に接続される。 A first fixing member 7a for fixing the arc tube 2 to the shaft members 3a and 3b is attached to the shaft members 3a and 3b of the support frame 3. The first fixing member 7a is made of a material having heat resistance to heat generation of the arc tube 2, and further, the first fixing member 7a is attached and fixed to the electrode portion 2a of the arc tube 2 and the shaft members 3a and 3b. For ease of use, it is desirable to be composed of materials that are easy to process. For example, the first fixing member 7a is made of a metal such as stainless steel. The first fixing member 7a is arranged so as to be bridged from the shaft member 3a to the shaft member 3b in the vicinity of the tip portion 1b. Although the first fixing member 7a is arranged in the main body portion 1a, it may be located in the tip portion 1b. The first fixing member 7a is fixed to the shaft members 3a and 3b. Further, an insulating member made of an electrically insulating material such as ceramic is interposed between the first fixing member 7a and the shaft members 3a and 3b, and these insulating members are the first. The fixing member 7a and the shaft members 3a and 3b are electrically insulated. The arc tube 2 is arranged between the shaft members 3a and 3b, and is attached to and fixed to the first fixing member 7a at the electrode portion 2a. The electrode of the electrode portion 2a of the arc tube 2 is electrically connected to the shaft members 3a and 3b via the conductive member.

支持枠3の軸部材3aには、これを保護する第一保護部材8及び第二保護部材9が、設けられている。同様に、軸部材3bにも、これを保護する第一保護部材8及び第二保護部材9が、設けられている。第一保護部材8及び第二保護部材9は、筒状の形状を有し、軸部材3a及び3bを外側から覆う。第一保護部材8及び第二保護部材9は、電気的な絶縁性を有する材料で構成され、さらに、断熱性を有することが望ましい。例えば、第一保護部材8及び第二保護部材9は、セラミックで構成される。第一保護部材8及び第二保護部材9はいずれも、軸部材3a及び3bに固定されず、軸部材3a及び3b上で軸方向にスライド可能であるように設けられる。 The shaft member 3a of the support frame 3 is provided with a first protective member 8 and a second protective member 9 for protecting the shaft member 3a. Similarly, the shaft member 3b is also provided with a first protective member 8 and a second protective member 9 for protecting the shaft member 3b. The first protective member 8 and the second protective member 9 have a tubular shape and cover the shaft members 3a and 3b from the outside. It is desirable that the first protective member 8 and the second protective member 9 are made of a material having an electrically insulating property, and further have a heat insulating property. For example, the first protective member 8 and the second protective member 9 are made of ceramic. Neither the first protective member 8 nor the second protective member 9 is fixed to the shaft members 3a and 3b, and is provided so as to be slidable in the axial direction on the shaft members 3a and 3b.

軸部材3a及び3bそれぞれにおいて、第二保護部材9は、第一固定部材7aと隣り合って配置され、具体的には、第一固定部材7aに対して先端部1b及び保持部材3dと反対側に位置する。軸部材3a及び3bそれぞれにおいて、第一保護部材8は、第二保護部材9と隣り合って配置され、具体的には、第二保護部材9に対して第一固定部材7aと反対側に位置する。第二保護部材9と第一固定部材7aとの間に、他の部材が介在してもよい。 In each of the shaft members 3a and 3b, the second protective member 9 is arranged adjacent to the first fixing member 7a, and specifically, the tip portion 1b and the holding member 3d are opposite to the first fixing member 7a. Located in. In each of the shaft members 3a and 3b, the first protective member 8 is arranged adjacent to the second protective member 9, and specifically, is located on the side opposite to the first fixing member 7a with respect to the second protective member 9. To do. Another member may be interposed between the second protective member 9 and the first fixing member 7a.

第一保護部材8及び第二保護部材9はそれぞれ、発光管2の長手軸A方向の一部と隣接するように設けられている。さらに、第一保護部材8及び第二保護部材9の全体は、発光管2の長手軸A方向の略全体に隣接するように設けられている。つまり、第一保護部材8及び第二保護部材9は、発光管2の長手軸A方向の略全体にわたって、軸部材3a及び3bと発光管2との間に介在し、発光管2が発生する熱から軸部材3a及び3bを防護する。特には、第一保護部材8及び第二保護部材9は、発光管2の発熱部分である電極部分2aと電極部分2bとの間の部分の全体に少なくとも隣接する。 The first protective member 8 and the second protective member 9 are provided so as to be adjacent to a part of the arc tube 2 in the longitudinal axis A direction, respectively. Further, the entire first protective member 8 and the second protective member 9 are provided so as to be adjacent to substantially the entire arc tube 2 in the longitudinal axis A direction. That is, the first protective member 8 and the second protective member 9 are interposed between the shaft members 3a and 3b and the arc tube 2 over substantially the entire direction of the longitudinal axis A of the arc tube 2, and the arc tube 2 is generated. Protects shaft members 3a and 3b from heat. In particular, the first protective member 8 and the second protective member 9 are at least adjacent to the entire portion between the electrode portion 2a and the electrode portion 2b, which are heat generating portions of the arc tube 2.

第一保護部材8と第二保護部材9との境界である継ぎ目は、長手軸A方向で、発光管2の中央位置からずれた位置にある。本実施の形態では、継ぎ目は、発光管2の中央位置よりも基部1cに近い位置に位置している。なお、発光管2の中央位置は、電極部分2aと電極部分2bとの中間位置である。発光管2の中央位置では、アーク放電量が最も大きくなるため、発熱量も最も大きくなる。このような中央位置には、第一保護部材8と第二保護部材9との継ぎ目が隣接せず、第二保護部材9が隣接する。これにより、発光管2に対する軸部材3a及び3bの熱防護が効果的になる。なお、本実施の形態では、第一保護部材8と第二保護部材9との継ぎ目は、発光管2の電極部分2bと隣接する位置にある。これにより、軸部材3a及び3bの熱防護がさらに効果的になる。また、上述のような継ぎ目位置を形成する第一保護部材8及び第二保護部材9では、第一保護部材8の方が、第二保護部材9よりも短い。これにより、第一保護部材8の方が、第二保護部材9よりも軸部材3a及び3b上で容易にスライドする。 The seam, which is the boundary between the first protective member 8 and the second protective member 9, is located at a position deviated from the central position of the arc tube 2 in the longitudinal axis A direction. In the present embodiment, the seam is located closer to the base 1c than the central position of the arc tube 2. The central position of the arc tube 2 is an intermediate position between the electrode portion 2a and the electrode portion 2b. At the central position of the arc tube 2, the amount of arc discharge is the largest, so the amount of heat generated is also the largest. At such a central position, the seam between the first protective member 8 and the second protective member 9 is not adjacent, and the second protective member 9 is adjacent. As a result, the thermal protection of the shaft members 3a and 3b against the arc tube 2 becomes effective. In the present embodiment, the joint between the first protective member 8 and the second protective member 9 is located adjacent to the electrode portion 2b of the arc tube 2. As a result, the thermal protection of the shaft members 3a and 3b becomes more effective. Further, in the first protective member 8 and the second protective member 9 forming the seam position as described above, the first protective member 8 is shorter than the second protective member 9. As a result, the first protective member 8 slides more easily on the shaft members 3a and 3b than the second protective member 9.

また、軸部材3a及び3bの第一保護部材8には、発光管2を2つの第一保護部材8に固定する第二固定部材7bが取り付けられている。第二固定部材7bは、第一固定部材7aと同様に、耐熱性を有する材料で構成され、さらに、加工が容易な材料で構成されることが望まく、例えばステンレス等の金属で構成される。第二固定部材7bは、発光管2の電極部分2bで、2つの第一保護部材8に架け渡されるように配置され、第一保護部材8に固定されている。よって、発光管2は、一端の電極部分2aで軸部材3a及び3bに固定され、他端の電極部分2bで軸部材3a及び3bに対して長手軸A方向で相対移動可能である。さらに、軸部材3a及び3bは、第二固定部材7bとの接続部分で第一保護部材8による保護受けるため、第二固定部材7bから受ける力を低減し、それにより、曲がり、屈折等の変形の発生を抑える。 Further, a second fixing member 7b for fixing the arc tube 2 to the two first protective members 8 is attached to the first protective member 8 of the shaft members 3a and 3b. Like the first fixing member 7a, the second fixing member 7b is made of a material having heat resistance, and it is desirable that the second fixing member 7b is made of a material that is easy to process, for example, made of a metal such as stainless steel. .. The second fixing member 7b is arranged so as to be bridged between the two first protective members 8 at the electrode portion 2b of the arc tube 2, and is fixed to the first protective member 8. Therefore, the arc tube 2 is fixed to the shaft members 3a and 3b at the electrode portion 2a at one end, and can move relative to the shaft members 3a and 3b at the electrode portion 2b at the other end in the longitudinal axis A direction. Further, since the shaft members 3a and 3b are protected by the first protective member 8 at the connecting portion with the second fixing member 7b, the force received from the second fixing member 7b is reduced, and thereby deformation such as bending and refraction is reduced. Suppress the occurrence of.

発光管2の電極部分2bの電極は、可撓性を有する第二導電部材11bによって、ステム5から外囲器1内に突出する電気導入線6bと物理的及び電気的に接続される。ステム5から外囲器1内に突出する電気導入線6aは、可撓性を有する第一導電部材11aによって、支持枠3、具体的には、接続部材3cと物理的及び電気的に接続される。2つの接続部材3cのうちの基部1cに近い方の接続部材3cが第一導電部材11aと接続される。第一導電部材11a及び第二導電部材11bは、金属等の導電性を有する材料で構成され、さらに、可撓性、より好ましくは、柔軟性を有するように形成される。例えば、第一導電部材11a及び第二導電部材11bは、リード線、金属ストリップ、金属箔の形で形成されてもよく、コイルばねのように伸縮自在な形で形成されてもよい。このような発光管2及び支持枠3は、全く移動しないようには、ステム5並びに電気導入線6a及び6bに固定されていない。 The electrode of the electrode portion 2b of the arc tube 2 is physically and electrically connected to the electric introduction line 6b protruding from the stem 5 into the enclosure 1 by the flexible second conductive member 11b. The electrical introduction wire 6a protruding from the stem 5 into the enclosure 1 is physically and electrically connected to the support frame 3, specifically, the connecting member 3c by the flexible first conductive member 11a. Ru. The connecting member 3c of the two connecting members 3c that is closer to the base 1c is connected to the first conductive member 11a. The first conductive member 11a and the second conductive member 11b are made of a conductive material such as metal, and are further formed to have flexibility, more preferably flexibility. For example, the first conductive member 11a and the second conductive member 11b may be formed in the form of a lead wire, a metal strip, or a metal foil, or may be formed in a stretchable shape such as a coil spring. Such a light emitting tube 2 and a support frame 3 are not fixed to the stem 5 and the electric introduction lines 6a and 6b so as not to move at all.

上述のようなランプ100は、点灯され、発光管2が発熱すると、図3及び図4に示されるような状態となる。なお、図3は、図1のランプ100の点灯時の状態を示す概念的な側面図である。図4は、図2のランプの点灯時の状態を示す概念的な側面図である。 When the lamp 100 as described above is turned on and the arc tube 2 generates heat, the state as shown in FIGS. 3 and 4 is obtained. Note that FIG. 3 is a conceptual side view showing a state when the lamp 100 of FIG. 1 is lit. FIG. 4 is a conceptual side view showing a state when the lamp of FIG. 2 is lit.

支持枠3において、第一保護部材8及び第二保護部材9は、軸部材3a及び3bを発光管2が発生する熱から防護する。具体的には、第一保護部材8及び第二保護部材9は、発光管2の発生熱から軸部材3a及び3bを完全に防護するわけでなく、軸部材3a及び3bに伝達する熱を低減する。これにより、軸部材3a及び3bの溶融、過度な熱変形が抑制される。 In the support frame 3, the first protective member 8 and the second protective member 9 protect the shaft members 3a and 3b from the heat generated by the arc tube 2. Specifically, the first protective member 8 and the second protective member 9 do not completely protect the shaft members 3a and 3b from the heat generated by the arc tube 2, and reduce the heat transferred to the shaft members 3a and 3b. To do. As a result, melting and excessive thermal deformation of the shaft members 3a and 3b are suppressed.

軸部材3a及び3bは、第一保護部材8及び第二保護部材9を通じて伝達する熱と、発光管2から第一保護部材8及び第二保護部材9以外の部分への輻射熱とによって、昇温する。これにより、軸部材3a及び3bは、その軸方向である長手軸A方向に伸長する。具体的には、軸部材3a及び3bは、外囲器1の先端部1bで固定されているため、先端部1bから基部1cに向かって伸長する。例えば、軸部材3a及び3bが先端部1bに向かって伸長した場合でも、軸部材3a及び3bの端部が、外囲器1に当接し外囲器1から反力を受けるため、軸部材3a及び3bは、全体として、基部1cに向かって伸長する。そして、基部1cに位置する軸部材3a及び3bの端部、接続部材3c及び保持部材3eが口金4に向かって移動する。基部1c及びその近傍では、軸部材3a及び3bは、接続部材3cを介して、第一導電部材11aと接続されているだけでしかないため、干渉を受けずに自由に伸長可能である。これにより、伸長時に軸部材3a及び3bから先端部1bに作用する力が抑えられる。さらに、伸長時、第一導電部材11aは自在に撓むため、第一導電部材11aと電気導入線6a及び接続部材3cとの接続部分に作用する負荷が低く抑えられ、接続が良好に維持される。さらに、ステム5の破損も抑えられる。また、伸長時に軸部材3a及び3bから力を受け得る外囲器1は、ランプ100の構成要素の中でも頑丈な構成要素であるため、軸部材3a及び3bからの力で容易に破損しない。 The temperature of the shaft members 3a and 3b rises due to the heat transferred through the first protective member 8 and the second protective member 9 and the radiant heat from the arc tube 2 to parts other than the first protective member 8 and the second protective member 9. To do. As a result, the shaft members 3a and 3b extend in the longitudinal axis A direction, which is the axial direction thereof. Specifically, since the shaft members 3a and 3b are fixed by the tip portion 1b of the outer enclosure 1, they extend from the tip portion 1b toward the base portion 1c. For example, even when the shaft members 3a and 3b extend toward the tip portion 1b, the end portions of the shaft members 3a and 3b come into contact with the outer enclosure 1 and receive a reaction force from the outer enclosure 1, so that the shaft member 3a And 3b extend towards the base 1c as a whole. Then, the ends of the shaft members 3a and 3b located at the base portion 1c, the connecting member 3c and the holding member 3e move toward the base 4. In the base portion 1c and its vicinity, the shaft members 3a and 3b are only connected to the first conductive member 11a via the connecting member 3c, and thus can be freely extended without interference. As a result, the force acting on the tip portion 1b from the shaft members 3a and 3b during extension is suppressed. Further, since the first conductive member 11a flexes freely at the time of extension, the load acting on the connecting portion between the first conductive member 11a and the electric introduction wire 6a and the connecting member 3c is suppressed to a low level, and the connection is maintained well. To. Further, damage to the stem 5 can be suppressed. Further, since the enclosure 1 that can receive a force from the shaft members 3a and 3b at the time of extension is a sturdy component among the components of the lamp 100, it is not easily damaged by the force from the shaft members 3a and 3b.

さらに、軸部材3a及び3bは、第一保護部材8及び第二保護部材9に対してスライドするように相対的に伸長する。これによっても、伸長時に軸部材3a及び3bから先端部1bに作用する力が抑えられる。さらに、第一保護部材8及び第二保護部材9が、伸長する軸部材3a及び3bと共に移動しないため、第一保護部材8が移動することに起因する発光管2に作用する負荷も抑えられる。特に、第一保護部材8の長さが小さく抑えられるため、熱等の影響で軸部材3a及び3bに歪み、撓み等の変形が生じた場合でも、第一保護部材8と軸部材3a及び3bとの間の円滑な相対的な移動が維持される。よって、ランプ100における各構成要素の破損の発生が抑えられる。 Further, the shaft members 3a and 3b extend relative to the first protective member 8 and the second protective member 9 so as to slide. This also suppresses the force acting on the tip portion 1b from the shaft members 3a and 3b during extension. Further, since the first protective member 8 and the second protective member 9 do not move together with the extending shaft members 3a and 3b, the load acting on the arc tube 2 due to the movement of the first protective member 8 can be suppressed. In particular, since the length of the first protective member 8 is suppressed to be small, even if the shaft members 3a and 3b are distorted or deformed due to the influence of heat or the like, the first protective member 8 and the shaft members 3a and 3b Smooth relative movement to and from is maintained. Therefore, the occurrence of damage to each component of the lamp 100 is suppressed.

上述のようなランプ100は、屋内外に設置される様々な照明装置のランプに適用可能である。例えば、ランプ100は、スポーツ施設、商業施設などの屋内外の施設の照明装置、船舶に搭載される集魚灯及び水中灯等に適用可能である。 The lamp 100 as described above can be applied to lamps of various lighting devices installed indoors and outdoors. For example, the lamp 100 can be applied to lighting devices for indoor and outdoor facilities such as sports facilities and commercial facilities, fish collecting lights and underwater lights mounted on ships.

上述したように実施の形態に係るランプ100は、透光性を有する外囲器1と、外囲器1内に配置される発光管2と、外囲器1内に配置され且つ発光管2を支持する支持枠3であって、外囲器1の先端部1b側で固定される支持枠3とを備える。 As described above, the lamp 100 according to the embodiment includes a translucent enclosure 1, a light emitting tube 2 arranged in the enclosure 1, and a light emitting tube 2 arranged in the enclosure 1. The support frame 3 is provided with a support frame 3 fixed to the tip portion 1b side of the outer enclosure 1.

上述の構成において、発光管2の支持枠3は、外囲器1の先端部1b側で固定されている。これにより、支持枠3は、外囲器1によって確実に支持され、発光管2を確実に固定することができる。また、発光時の発光管2の熱により支持枠3が熱膨張する。例えば、支持枠3が外囲器1の基部1c側で固定されていなければ、支持枠3は、外囲器1の先端部1bから基部1cに向かって伸長することができる。また、支持枠3が先端部1bに向かって伸長した場合でも、伸長に伴い支持枠3が与える力は、外囲器1によって支持され、支持枠3は、全体として先端部1bから基部1cに向かって伸長する。そして、頑丈な外囲器1は、伸長する支持枠3によって損傷を受けにくい。例えば、支持枠3が、外囲器1の基部1c側で固定され先端部1bに向かって伸長する場合、先端部1b側で外囲器1と接触し、外囲器1から伸長の制限を受ける可能性がある。この場合、伸長に起因する負荷が、外囲器1の基部1c側の支持枠3の固定部分に発生し、この固定部分を損傷する可能性がある。よって、点灯中の熱によってランプ100の構成要素が受ける影響が低減する。 In the above configuration, the support frame 3 of the arc tube 2 is fixed on the tip 1b side of the outer enclosure 1. As a result, the support frame 3 is reliably supported by the outer enclosure 1, and the arc tube 2 can be reliably fixed. Further, the support frame 3 thermally expands due to the heat of the arc tube 2 at the time of light emission. For example, if the support frame 3 is not fixed on the base 1c side of the enclosure 1, the support frame 3 can extend from the tip 1b of the enclosure 1 toward the base 1c. Further, even when the support frame 3 extends toward the tip portion 1b, the force given by the support frame 3 due to the extension is supported by the outer enclosure 1, and the support frame 3 moves from the tip portion 1b to the base portion 1c as a whole. Stretch toward. The sturdy enclosure 1 is less likely to be damaged by the extending support frame 3. For example, when the support frame 3 is fixed on the base 1c side of the outer enclosure 1 and extends toward the tip 1b, it contacts the outer enclosure 1 on the tip 1b side to limit the extension from the outer enclosure 1. May be received. In this case, a load due to the extension may be generated in the fixed portion of the support frame 3 on the base 1c side of the outer enclosure 1 and damage the fixed portion. Therefore, the influence of the heat during lighting on the components of the lamp 100 is reduced.

実施の形態に係るランプ100は、外囲器1内の基部1c側に配置され且つ発光管2へ電気を導入する電気導入線6a及び6bと、電気導入線6aを支持枠3に接続し且つ可撓性を有する導電部材11aとをさらに備え、支持枠3は、導電性を有し且つ発光管2と電気的に接続される。上述の構成において、導電部材11aが可撓性を有するため、支持枠3が熱伸縮した場合でも、導電部材11aと電気導入線6a及び支持枠3との接続部分において、負荷の発生が抑えられ、良好な接続が維持される。 The lamp 100 according to the embodiment is arranged on the base 1c side in the outer enclosure 1 and connects the electric introduction lines 6a and 6b for introducing electricity into the arc tube 2 and the electric introduction lines 6a to the support frame 3. Further provided with a flexible conductive member 11a, the support frame 3 is conductive and is electrically connected to the arc tube 2. In the above configuration, since the conductive member 11a has flexibility, even when the support frame 3 is thermally expanded and contracted, the generation of a load is suppressed at the connecting portion between the conductive member 11a and the electric introduction wire 6a and the support frame 3. , Good connection is maintained.

実施の形態に係るランプ100において、支持枠3は、外囲器1の先端部1bから基部1cに向かう方向に延びる軸部材3a及び3bと、軸部材3a及び3b上に設けられ且つ軸部材3a及び3bを保護する第一保護部材8とを含み、発光管2は、第一保護部材8に取り付けられる。上述の構成において、第一保護部材8は、発光管2の取付部分等から軸部材3a及び3bが受ける負荷を低減し、軸部材3a及び3bの変形を抑える。また、軸部材3a及び3bは、発光時の発光管2の熱により熱膨張する場合、その軸方向に伸長する。例えば、第一保護部材8は、軸部材3a及び3bに対してスライドすることができれば、伸縮する軸部材3a及び3bを自身に対してスライドさせ、軸部材3a及び3bの伸縮へ与える干渉を抑える。 In the lamp 100 according to the embodiment, the support frame 3 is provided on the shaft members 3a and 3b extending in the direction from the tip portion 1b of the outer enclosure 1 toward the base portion 1c, and the shaft members 3a and 3a. And the first protective member 8 that protects 3b, and the arc tube 2 is attached to the first protective member 8. In the above configuration, the first protective member 8 reduces the load received on the shaft members 3a and 3b from the mounting portion of the arc tube 2 and the like, and suppresses the deformation of the shaft members 3a and 3b. Further, when the shaft members 3a and 3b are thermally expanded by the heat of the light emitting tube 2 at the time of light emission, they extend in the axial direction thereof. For example, if the first protective member 8 can slide with respect to the shaft members 3a and 3b, the telescopic shaft members 3a and 3b are slid with respect to themselves, and interference with the expansion and contraction of the shaft members 3a and 3b is suppressed. ..

実施の形態に係るランプ100において、第一保護部材8は、発光管2に部分的に隣接して配置される。上述の構成において、第一保護部材8は、例えば、発光管2の全体にわたるように長く形成されない。例えば、第一保護部材8は、軸部材3a及び3bに対してスライドすることができれば、軸部材3a及び3bとの接触面積を低く抑え、軸部材3a及び3bに対して良好な摺動性を有することができる。よって、熱伸長時に軸部材3a及び3bに撓み等の湾曲が発生した場合でも、第一保護部材8は、軸部材3a及び3bを自身に対してスライドさせ、軸部材3a及び3bの伸縮へ与える干渉を抑えることができる。 In the lamp 100 according to the embodiment, the first protective member 8 is arranged partially adjacent to the arc tube 2. In the above configuration, the first protective member 8 is not formed long, for example, over the entire arc tube 2. For example, if the first protective member 8 can slide with respect to the shaft members 3a and 3b, the contact area with the shaft members 3a and 3b can be kept low, and good slidability with respect to the shaft members 3a and 3b can be obtained. Can have. Therefore, even if the shaft members 3a and 3b are bent or otherwise curved during thermal expansion, the first protective member 8 slides the shaft members 3a and 3b with respect to themselves and imparts them to the expansion and contraction of the shaft members 3a and 3b. Interference can be suppressed.

実施の形態に係るランプ100において、支持枠3は、第一保護部材8に加え、第二保護部材9を含み、第一保護部材8及び第二保護部材9の境界は、発光管2に隣接する位置にある。上述の構成において、軸部材3a及び3bは、第一保護部材8以外の部分でも、第二保護部材9によって保護される。これにより、発光管2から軸部材3a及び3bに伝達する熱が抑えられる。 In the lamp 100 according to the embodiment, the support frame 3 includes the second protective member 9 in addition to the first protective member 8, and the boundary between the first protective member 8 and the second protective member 9 is adjacent to the arc tube 2. Is in a position to do. In the above configuration, the shaft members 3a and 3b are protected by the second protective member 9 even in portions other than the first protective member 8. As a result, the heat transferred from the arc tube 2 to the shaft members 3a and 3b is suppressed.

実施の形態に係るランプ100において、発光管2は、外囲器1の先端部1b側及び基部1c側のそれぞれに、電極部分2a及び2bを有し、第一保護部材8及び第二保護部材9の境界は、軸部材3a及び3bの軸方向で電極部分2a及び2bの間の中間位置からずれた位置にある。上述の構成において、発光管2の電極部分2a及び2b間の中間位置は、アークスポットとなり、発光管2で最も熱量が大きい位置である。第一保護部材8及び第二保護部材9の隣接部分である継ぎ目を上記中間位置からずらすことによって、第一保護部材8及び第二保護部材9は、上記中間位置で発生した熱から軸部材3a及び3bが受ける影響を効果的に抑える。 In the lamp 100 according to the embodiment, the arc tube 2 has electrode portions 2a and 2b on the tip portion 1b side and the base portion 1c side of the enclosure 1, respectively, and has the first protective member 8 and the second protective member. The boundary of 9 is located at a position deviated from the intermediate position between the electrode portions 2a and 2b in the axial direction of the shaft members 3a and 3b. In the above configuration, the intermediate position between the electrode portions 2a and 2b of the arc tube 2 is an arc spot, which is the position having the largest amount of heat in the arc tube 2. By shifting the seams adjacent to the first protective member 8 and the second protective member 9 from the intermediate position, the first protective member 8 and the second protective member 9 are subjected to the shaft member 3a from the heat generated at the intermediate position. And 3b are effectively suppressed.

[その他の変形例]
実施の形態に係るランプ100では、支持枠3は、外囲器1に係合することによって固定されていたが、これに限定されない。例えば、支持枠3は、外囲器1の内周面に形成された突起に嵌合することによって固定されてもよく、外囲器1の内周面に形成された雌ねじに螺合することによって固定されてもよく、接着又は溶着によって外囲器1に固定されてもよい。又は、支持枠3は、他の固定部材を用いて外囲器1に固定されてもよい。
[Other variants]
In the lamp 100 according to the embodiment, the support frame 3 is fixed by engaging with the outer enclosure 1, but the present invention is not limited to this. For example, the support frame 3 may be fixed by fitting into a protrusion formed on the inner peripheral surface of the outer peripheral device 1, and is screwed into a female screw formed on the inner peripheral surface of the outer peripheral device 1. It may be fixed to the enclosure 1 by adhesion or welding. Alternatively, the support frame 3 may be fixed to the outer enclosure 1 by using another fixing member.

1 外囲器
1b 先端部
1c 基部
2 発光管
2a,2b 電極部分(極)
3 支持枠
3a,3b 軸部材
6a,6b 電気導入線
8 第一保護部材
9 第二保護部材
11a 導電部材
100 ランプ
1 Encloser 1b Tip 1c Base 2 Sound tube 2a, 2b Electrode (pole)
3 Support frame 3a, 3b Shaft member 6a, 6b Electric introduction line 8 First protective member 9 Second protective member 11a Conductive member 100 Lamp

Claims (2)

透光性を有する外囲器と、
前記外囲器内に配置される発光管と、
前記外囲器内に配置され且つ前記発光管を支持する支持枠であって、前記外囲器の先端部から基部に向かう方向に延びる2つの軸部材を有し、前記2つの軸部材の間に前記発光管を支持し、前記外囲器の先端側で固定される支持枠と
を備える
ランプ。
A translucent enclosure and
The arc tube arranged in the enclosure and
A support frame that is arranged in the enclosure and supports the arc tube , has two shaft members extending in a direction from the tip to the base of the enclosure, and is between the two shaft members. A lamp provided with a support frame that supports the arc tube and is fixed on the tip end side of the enclosure.
前記外囲器内の基部側に配置され且つ前記発光管へ電気を導入する電気導入線と、
前記電気導入線を前記支持枠に接続し且つ可撓性を有する導電部材とをさらに備え、
前記支持枠は、導電性を有し且つ前記発光管と電気的に接続される
請求項1に記載のランプ。
An electric introduction line arranged on the base side in the outer enclosure and introducing electricity into the arc tube,
Further provided with a conductive member that connects the electrical introduction wire to the support frame and has flexibility.
The lamp according to claim 1, wherein the support frame is conductive and is electrically connected to the arc tube.
JP2016233539A 2016-11-30 2016-11-30 lamp Active JP6826711B2 (en)

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