JP2576953Y2 - Discharge lamp - Google Patents

Discharge lamp

Info

Publication number
JP2576953Y2
JP2576953Y2 JP1991095417U JP9541791U JP2576953Y2 JP 2576953 Y2 JP2576953 Y2 JP 2576953Y2 JP 1991095417 U JP1991095417 U JP 1991095417U JP 9541791 U JP9541791 U JP 9541791U JP 2576953 Y2 JP2576953 Y2 JP 2576953Y2
Authority
JP
Japan
Prior art keywords
fixed
discharge lamp
moving
sealing
lamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP1991095417U
Other languages
Japanese (ja)
Other versions
JPH0538752U (en
Inventor
恭典 藤名
省一 間山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ushio Denki KK
Original Assignee
Ushio Denki KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ushio Denki KK filed Critical Ushio Denki KK
Priority to JP1991095417U priority Critical patent/JP2576953Y2/en
Publication of JPH0538752U publication Critical patent/JPH0538752U/en
Application granted granted Critical
Publication of JP2576953Y2 publication Critical patent/JP2576953Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【考案の詳細な説明】[Detailed description of the invention]

【0001】[0001]

【産業上の利用分野】本考案は、バルブ両端の封止部に
金属口金が装着された放電灯に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge lamp in which metal caps are attached to sealing portions at both ends of a bulb.

【0002】[0002]

【従来の技術】放電灯、例えばショートアーク放電灯
は、バルブ両端の封止部に金属口金が装着され、この金
属口金を通して通電されるが、点灯時の熱膨張によりバ
ルブが伸びる。従って、光学装置に取り付けるときは、
もし両方の口金を灯具に固定すると、バルブの熱膨張が
吸収されず、放電灯が破損することがあるので、一方の
口金のみを光学装置の灯具に固定し、他方の口金はフリ
ーにしてバルブの伸びを吸収できるようにしている。つ
まり、放電灯を水平点灯する光学装置の場合は、放電灯
は片側のみが固定された片持ち梁の状態になる。
2. Description of the Related Art In a discharge lamp, for example, a short arc discharge lamp, a metal base is attached to a sealing portion at both ends of a bulb, and electricity is supplied through the metal base, but the bulb expands due to thermal expansion at the time of lighting. Therefore, when attaching to an optical device,
If both bases are fixed to the lamp, the thermal expansion of the bulb is not absorbed and the discharge lamp may be damaged.Therefore, only one base is fixed to the lamp of the optical device, and the other base is free and the bulb is free. So that it can absorb the elongation. That is, in the case of an optical device that horizontally lights the discharge lamp, the discharge lamp is in a cantilever state in which only one side is fixed.

【0003】[0003]

【考案が解決しようとする課題】水平点灯される放電灯
が片側固定であっても、放電灯が例えば500W以下の
小型なものであれば放電灯自体の重量も軽く、長さも短
いので問題ない。また、半導体焼付装置や映画館の映写
機のように、据え置かれたままでほとんど移動すること
のない光学装置の場合は、放電灯がこれよりも大きくな
ってもあまり問題がない。
Even if the horizontally lit discharge lamp is fixed on one side, if the discharge lamp is small, for example, 500 W or less, there is no problem since the discharge lamp itself is light in weight and short in length. . Further, in the case of an optical device which hardly moves while being kept stationary, such as a semiconductor printing device or a projector in a movie theater, there is not much problem even if the discharge lamp becomes larger than this.

【0004】しかし、例えばレンタルで使用されるプロ
ジェクターのように、使用場所に応じて移動する光学装
置の場合は、放電灯の入力が1.0 KW程度になると、
放電灯自体の重量が300g程度であり、長さも200
mm程度になるので、片側固定では、移動時の耐震性が問
題になり、放電灯の破損につながる場合がある。このた
め、移動時に放電灯を取り外したり、放電灯のフリーの
口金を補助部材を使用して固定している。しかし、一旦
灯具から放電灯を取り外すと、再度取り付ける時の位置
合わせが非常に面倒であり、移動時にフリーの口金を固
定するのも、使用時にその固定を解除する必要があり、
これも非常に面倒である。
However, in the case of an optical device that moves according to the place of use, such as a projector used for rental, when the input of the discharge lamp becomes about 1.0 kW,
The weight of the discharge lamp itself is about 300 g and the length is 200
Since it is on the order of mm, one-sided fixation may cause a problem of earthquake resistance when moving, which may lead to breakage of the discharge lamp. For this reason, the discharge lamp is removed at the time of movement, or a free base of the discharge lamp is fixed using an auxiliary member. However, once the discharge lamp is removed from the lamp, it is very troublesome to adjust the position when re-attaching, and it is necessary to fix the free base when moving, and to release the fixing when using,
This is also very troublesome.

【0005】そこで本考案は、両端の口金を灯具に常時
固定状態にして移動時の耐震性を向上させても、バルブ
の熱膨張を吸収することができる放電灯を提供すること
を目的とする。
Accordingly, an object of the present invention is to provide a discharge lamp capable of absorbing the thermal expansion of a bulb even when the bases at both ends are constantly fixed to a lamp to improve the earthquake resistance during movement. .

【0006】[0006]

【課題を解決するための手段】かかる目的を達成するた
めに、本考案は、バルブ両端の封止部に金属口金が装着
され、この金属口金を通して通電される放電灯におい
て、口金の少なくとも一方を、封止部に固定される固定
部と、固定部に軸線方向に移動可能に接続された移動部
とで構成し、固定部の外周には、周方向の溝を形成し、
移動部には、この溝に嵌合して封止部の径方向の移動を
規制する係合部を形成し、固定部と移動部の間にはバネ
部材を介装して移動部が固定部から離反する方向に弾発
する。
In order to achieve the above object, according to the present invention, at least one of the bases is provided in a discharge lamp in which a metal base is attached to the sealing portions at both ends of the bulb and a current is supplied through the metal base. A fixed part fixed to the sealing part, and a moving part connected to the fixed part so as to be movable in the axial direction, a circumferential groove is formed on the outer periphery of the fixed part,
The moving part fits into this groove to allow the radial movement of the sealing part.
A restricting engaging portion is formed, and a spring member is interposed between the fixed portion and the moving portion, so that the moving portion resiliently moves away from the fixed portion.

【0007】[0007]

【作用】少なくとも一方の口金を固定部と移動部に分割
て2部品構成とし、固定部の外周には、周方向の溝を
形成し、移動部には、この溝に嵌合して封止部の径方向
の移動を規制する係合部を形成し、更に固定部と移動部
の間にバネ部材を介装したので、両端の口金を灯具に固
定しても、バルブの軸線方向への熱膨張を吸収すること
ができる。また、両側固定であるので、光学装置の移動
時にも耐震性が向上する。
The at least one base is divided into a fixed part and a moving part to form a two-part structure, and a circumferential groove is formed on the outer periphery of the fixed part.
The moving part is fitted in this groove in the radial direction of the sealing part.
An engaging part that regulates the movement of the lamp is formed, and a spring member is interposed between the fixed part and the moving part. Therefore, even if the bases at both ends are fixed to the lamp, thermal expansion in the axial direction of the bulb is absorbed. can do. In addition, since both sides are fixed, the earthquake resistance is improved even when the optical device is moved.

【0008】[0008]

【実施例】以下に図面に示す実施例に基いて本考案を具
体的に説明する。図1は、出力が1.3 KWのショート
アーク型キセノン放電灯を示すが、石英ガラスからなる
バルブ1の中央内部に一対の電極2,2が対向配置さ
れ、バルブ1の両側が封止部11 である。そして、封止
部 11 の端部にそれぞれ口金3,4が取り付けられてい
る。ここで、一方の口金3は、固定部 31 と移動部 32
で構成され、移動部 32 は固定部 31 に対して軸線方向
に移動可能に接続されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the drawings. FIG. 1 shows a short arc type xenon discharge lamp having an output of 1.3 kW, in which a pair of electrodes 2 and 2 are opposed to each other inside a center of a bulb 1 made of quartz glass, and both sides of the bulb 1 are sealed. 11 Then, bases 3 and 4 are attached to ends of the sealing portion 11, respectively. Here, one base 3 has a fixed part 31 and a moving part 32.
The moving unit 32 is connected to the fixed unit 31 so as to be movable in the axial direction.

【0009】次に、固定部 31 と移動部 32 の接続構造
を図2に基づいて説明すると、筒状の固定部 31 に封止
部 11 が挿入され、やゝ大径の位置調整部31b に螺着さ
れた3本の位置調整ねじ7で芯を出した後、固定部 31
と封止部 11 の隙間に接着剤6が充填されて接着されて
いる。なお、接着剤の代りにアスベストなどを隙間に介
在させて固定しても良い。そして、固定部 31 の後端に
周方向のやゝ幅の広い環状溝31a が形成されている。
一方、移動部 32 の前端には、内向き鍔状の係合部32a
が形成され、係合部32a が環状溝31a に嵌め込まれて
いる。従って、係合部32a が環状溝31a 内で軸線方向
に移動可能な範囲において移動部 32 と固定部 31 が相
対的に移動可能であるが、封止部11の径方向の移動は
規制されている。そして、この軸線方向の移動可能範囲
は、バルブ1の軸線方向の熱膨張量よりも大きくなって
いる。
Next, the connection structure between the fixed portion 31 and the moving portion 32 will be described with reference to FIG. 2. The sealing portion 11 is inserted into the cylindrical fixed portion 31, and the position adjusting portion 31b having a relatively large diameter is inserted into the cylindrical portion. After the core is set out with the three position adjustment screws 7 screwed, the fixing part 31
An adhesive 6 is filled in and adhered to the gap between the sealing member 11 and. Note that, instead of the adhesive, asbestos or the like may be interposed in the gap and fixed. Then, at the rear end of the fixed part 31
Wide annular groove 31a in the circumferential direction of the arrowsゝwidth is formed.
On the other hand, the front end of the moving portion 32 has an inward flange-shaped engaging portion 32a.
There is formed an engaging portion 32a is fitted into the annular groove 31a. Therefore, although the fixed portion 31 and movable portion 32 in a movable range in the axial direction engaging portion 32a is in the annular groove 31a is relatively movable, the radial movement of the sealing portion 11
Regulated. Then, the movable range of the axial direction is larger than the thermal expansion amount in the axial direction of the valve 1.

【0010】固定部 31 と移動部 32 の間にはバネ部材
5が介装されており、移動部 32 は固定部 31 から離反
する方向に弾発されている。図示したバネ部材5は、ワ
ッシャー状バネとワッシャー状平板を交互に組み合わせ
たものであるが、通常のコイルバネであってもよい。ま
た、封止部 11 から伸びる外部リード棒 21 と移動部32
の接点32b の間は撚り線 22 で接続されており、通電
は移動部 32 から行うようになっている。従って、固定
部 31 と移動部 32 の電気的接触が不完全であっても、
通電には支障がない。
A spring member 5 is interposed between the fixed portion 31 and the moving portion 32, and the moving portion 32 is resiliently moved away from the fixed portion 31. The illustrated spring member 5 is obtained by alternately combining washer-shaped springs and washer-shaped flat plates, but may be a normal coil spring. Also, the external lead rod 21 extending from the sealing part 11 and the moving part 32
The contact 32b is connected by the stranded wire 22 so that power is supplied from the moving unit 32. Therefore, even if the electrical contact between the fixed part 31 and the moving part 32 is incomplete,
There is no problem in energization.

【0011】かかるショートアーク型キセノン放電灯
を、図3に示すように、光学装置の灯具9内に水平方向
に取り付ける。この取付構造を説明すると、先ず、口金
4を灯具9のプラス側給電部 91 に固定する。一方、絶
縁材からなる灯具9の前板 93には光放射孔が形成さ
れ、この光放射孔に板状のマイナス側給電部 92 が取り
付けられているが、このマイナス側給電部 92 に口金3
の移動部 32 を固定する。つまり、両方の口金3,4が
それぞれ固定されている。放電灯を取り囲む光学系8
は、楕円反射鏡 81 、球面反射鏡 82 およびレンズ 83
からなり、楕円反射鏡81 で反射した放電灯の光はレン
ズ 83 を透過して前方に照射されるようになっている。
なお、球面反射鏡 82 で反射した光は再び放電灯に戻さ
れ、続いて楕円反射鏡 81 で反射してレンズ 83 を透過
する。
As shown in FIG. 3, such a short arc type xenon discharge lamp is mounted horizontally in a lamp 9 of an optical device. Describing this mounting structure, first, the base 4 is fixed to the plus side power supply portion 91 of the lamp 9. On the other hand, a light emitting hole is formed in a front plate 93 of the lamp 9 made of an insulating material, and a plate-shaped negative power supply portion 92 is attached to the light radiation hole.
The moving part 32 of is fixed. That is, both the bases 3 and 4 are fixed respectively. Optical system 8 surrounding the discharge lamp
Is an elliptical reflector 81, a spherical reflector 82 and a lens 83
The light of the discharge lamp reflected by the elliptical reflecting mirror 81 is transmitted through the lens 83 and irradiated forward.
The light reflected by the spherical reflecting mirror 82 is returned to the discharge lamp again, and subsequently reflected by the elliptical reflecting mirror 81 and transmitted through the lens 83.

【0012】しかして、放電灯を点灯すると、バルブ1
が高温になり、熱膨張するが、口金3の移動部 32 と固
定部 31 が軸線方向に移動可能に接続されているので、
バネ部材8の弾発力に抗して固定部 31 が移動部 32 に
接近する。つまり、両方の口金3,4がそれぞれ固定さ
れているにもかかわらず、バルブ1の熱膨張を吸収する
ことができ、放電灯が破損することがない。また、この
光学装置を移動するときは、放電灯の両端が固定されて
いるので、そのまま移動しても耐震性に問題がなく、放
電灯が破損することがない。
When the discharge lamp is turned on, the bulb 1
Becomes hot and thermally expands. However, since the moving part 32 and the fixed part 31 of the base 3 are connected to be movable in the axial direction,
The fixed part 31 approaches the moving part 32 against the elastic force of the spring member 8. That is, despite the fact that both the bases 3 and 4 are fixed, the thermal expansion of the bulb 1 can be absorbed, and the discharge lamp is not damaged. Further, when the optical device is moved, both ends of the discharge lamp are fixed, so that even if the optical device is moved as it is, there is no problem in the earthquake resistance and the discharge lamp is not damaged.

【0013】[0013]

【考案の効果】以上説明したように、本考案の放電灯
は、口金の少なくとも一方を、封止部に固定される固定
部と、固定部に軸線方向に移動可能に接続された移動部
とで構成し、固定部の外周には、周方向の溝を形成し、
移動部には、この溝に嵌合して封止部の径方向の移動を
規制する係合部を形成し、固定部と移動部の間にはバネ
部材を介装して移動部が固定部から離反する方向に弾発
したので、放電灯の両端を灯具に固定してもバルブの熱
膨張を吸収することができ、しかも耐震性が大きくて光
学装置の移動中に放電灯が破損することもない。
As described above, in the discharge lamp of the present invention, at least one of the bases is provided with the fixed portion fixed to the sealing portion, and the moving portion connected to the fixed portion so as to be movable in the axial direction. And a circumferential groove is formed on the outer periphery of the fixed portion,
The moving part fits into this groove to allow the radial movement of the sealing part.
A restricting engagement portion is formed, and a spring member is interposed between the fixed portion and the moving portion, so that the moving portion is repelled in a direction away from the fixed portion, so that both ends of the discharge lamp are fixed to the lamp. Can absorb the thermal expansion of the bulb, and has high seismic resistance, so that the discharge lamp is not damaged during the movement of the optical device.

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

【図1】本考案実施例の正面図である。FIG. 1 is a front view of an embodiment of the present invention.

【図2】同じく要部の断面図である。FIG. 2 is a cross-sectional view of the main part.

【図3】放電灯を灯具に取り付けた状態の説明図であ
る。
FIG. 3 is an explanatory view of a state where a discharge lamp is attached to a lamp.

【符号の説明】[Explanation of symbols]

1 バルブ 11 封止部 2 電極 21 外部リード棒 22 撚り線 3 口金 31 固定部 32 移動部 4 口金 5 バネ部材 6 接着剤 7 位置調整ねじ 8 光学系 9 灯具 DESCRIPTION OF SYMBOLS 1 Valve 11 Sealing part 2 Electrode 21 External lead rod 22 Stranded wire 3 Base 31 Fixed part 32 Moving part 4 Base 5 Spring member 6 Adhesive 7 Position adjustment screw 8 Optical system 9 Lighting fixture

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】 バルブ両端の封止部に金属口金が装着さ
れ、該金属口金を通して通電される放電灯において、 前記口金の少なくとも一方は、該封止部に固定される固
定部と、該固定部に軸線方向に移動可能に接続された移
動部からなり、該固定部の外周には、周方向の溝が形成され、 該移動部には、該溝に嵌合して封止部の径方向の移動を
規制する係合部が形成され、 該固定部と移動部の間にはバネ部材が介装されて移動部
が固定部から離反する方向に弾発されたことを特徴とす
る放電灯。
1. A metal base is attached to a sealing portion at both ends of a valve.
In a discharge lamp energized through the metal base, at least one of the bases is fixed to the sealing portion.
Fixed part and a transfer part movably connected in the axial direction to the fixed part.
Consisting of moving parts,A circumferential groove is formed on the outer periphery of the fixing portion, The moving part is fitted in the groove to move the sealing part in the radial direction.
A regulating engagement portion is formed,  A spring member is interposed between the fixed part and the moving part to move the moving part.
Is ejected in a direction away from the fixed part.
Discharge lamp.
JP1991095417U 1991-10-25 1991-10-25 Discharge lamp Expired - Fee Related JP2576953Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1991095417U JP2576953Y2 (en) 1991-10-25 1991-10-25 Discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1991095417U JP2576953Y2 (en) 1991-10-25 1991-10-25 Discharge lamp

Publications (2)

Publication Number Publication Date
JPH0538752U JPH0538752U (en) 1993-05-25
JP2576953Y2 true JP2576953Y2 (en) 1998-07-23

Family

ID=14137114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1991095417U Expired - Fee Related JP2576953Y2 (en) 1991-10-25 1991-10-25 Discharge lamp

Country Status (1)

Country Link
JP (1) JP2576953Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101748733B1 (en) * 2006-09-01 2017-06-19 가부시키가이샤 니콘 Discharge lamp, light source apparatus, exposure apparatus and exposure apparatus manufacturing method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717713U (en) * 1980-07-01 1982-01-29

Also Published As

Publication number Publication date
JPH0538752U (en) 1993-05-25

Similar Documents

Publication Publication Date Title
US5526237A (en) Lighting system for increasing brightness to a light guide
US8308307B2 (en) Illuminator and projector
HU204205B (en) Treating lamp operating by polarized light usable for biostimulation purpose
EP2009964A2 (en) Ignition controller, light source projector and ignition control method
JP4362337B2 (en) Infrared light bulb, heating device and electronic device
US3758769A (en) Rotating light projector
JP2576953Y2 (en) Discharge lamp
JP3020397B2 (en) Short arc type cadmium rare gas discharge lamp and projection exposure apparatus equipped with the same
JP2007286386A (en) Laser scanner
US3974370A (en) Prefocused lamp base and fixture
JP2015145981A (en) Optical device and projector
US2980818A (en) Projection lamp
EP1205705B1 (en) Electric discharge lamp device
JPS61175617A (en) Semiconductor laser device
US8174194B2 (en) Discharge lamp, light source device and projector
JPH0713169Y2 (en) Short arc type discharge lamp
JP2000330165A (en) Flash light emitting device
RU116601U1 (en) SPOTLIGHT WITH DISCHARGE LAMP
US5636915A (en) High brightness projection lighting system
JP2543525Y2 (en) Discharge lamp device
CN210270480U (en) Novel projection system
JP4736961B2 (en) Light source device
JP2002031969A (en) Image forming method and image forming device
JP4211570B2 (en) LIGHT SOURCE DEVICE, LIGHT SOURCE DEVICE MANUFACTURING METHOD, IMAGE DISPLAY DEVICE, PROJECTOR
JPH09265246A (en) Fixing device

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees