JPH08106812A - Light source device - Google Patents
Light source deviceInfo
- Publication number
- JPH08106812A JPH08106812A JP23910094A JP23910094A JPH08106812A JP H08106812 A JPH08106812 A JP H08106812A JP 23910094 A JP23910094 A JP 23910094A JP 23910094 A JP23910094 A JP 23910094A JP H08106812 A JPH08106812 A JP H08106812A
- Authority
- JP
- Japan
- Prior art keywords
- radiator
- discharge lamp
- light source
- source device
- reflecting mirror
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主にショートアーク型
の放電灯を備えた光源装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a light source device equipped with a short arc type discharge lamp.
【０００２】[0002]
【従来の技術】従来、楕円型の反射鏡を使用したショー
トアーク型放電灯では、放電灯の寿命、出力効率などを
考慮して、反射光の光路中に位置する電極部の口金を、
冷却することが行なわれている。この冷却方法として
は、たとえば、１５０Ｗ程度以下の低出力ランプでは自
然空冷が行なわれ、１５０Ｗ程度以上の高出力ランプで
はファンを用いた強制空冷が行なわれている。その他、
実開平３−１２４４５８号公報、実開平４−６１８５３
号公報などにも開示されている。2. Description of the Related Art Conventionally, in a short arc type discharge lamp using an elliptical reflecting mirror, considering the life of the discharge lamp, the output efficiency, etc., the base of the electrode portion located in the optical path of the reflected light is
Cooling is taking place. As a cooling method, for example, low-power lamps of about 150 W or less perform natural air cooling, and high-power lamps of about 150 W or more perform forced air cooling using a fan. Other,
Japanese Utility Model Publication No. 3-124458, Japanese Utility Model Publication No. 4-61853
It is also disclosed in Japanese Patent Publication.
【０００３】[0003]
【発明が解決しようとする課題】しかし、自然空冷の場
合には、ランプ電力が高くなるほど蓄熱してしまうた
め、１５０Ｗ以上のランプには使用できなかった。However, in the case of natural air cooling, heat cannot be used for lamps of 150 W or more because the heat is accumulated as the lamp power increases.
【０００４】一方、強制空冷が最も一般的で適用範囲も
広いが、ランプ電力が高くなるほど強力に冷却しなけれ
ばならない。このため、ランプ放電部分が必要以上に冷
却されてしまい、その影響でランプが不安定になった
り、出力が低下するといった欠点があった。On the other hand, forced air cooling is the most general and has a wide range of applications, but it must be cooled more strongly as the lamp power increases. As a result, the lamp discharge portion is cooled more than necessary, which causes the lamp to be unstable and the output to be lowered.
【０００５】本発明は、このような課題を解決すべくな
されたものであり、その目的は、放電灯の電極部を制御
性良く冷却し得る光源装置を提供することにある。The present invention has been made to solve such a problem, and an object thereof is to provide a light source device capable of cooling the electrode portion of a discharge lamp with good controllability.
【０００６】[0006]
【課題を解決するための手段】そこで、本発明にかかる
光源装置は、反射鏡の略中央部に放電灯を配し、この放
電灯は、対向する両端に電極部を有しており、この反射
鏡で反射された光が進行する光路中に一方の電極部が位
置するように配置する。そして、この一方の電極部に、
複数の放熱フィンを有する放熱体を固定して構成する。Therefore, in a light source device according to the present invention, a discharge lamp is arranged in a substantially central portion of a reflecting mirror, and the discharge lamp has electrode portions at opposite ends thereof. It is arranged so that one electrode portion is located in the optical path along which the light reflected by the reflecting mirror travels. And on this one electrode part,
A radiator having a plurality of radiator fins is fixed and configured.
【０００７】また、この放熱フィンは、その放熱面が反
射鏡で反射された光が進行する方向に沿うように配置す
ることが望ましい。Further, it is desirable that the heat radiation fin is arranged so that the heat radiation surface thereof is along the direction in which the light reflected by the reflecting mirror travels.
【０００８】さらに、反射鏡、放電灯及び放熱体を収容
する収容箱と、収容箱に設けられ、外気をこの収容箱の
内部に流通させる送風手段とをさらに備え、光源装置を
一体的に構成しても良い。Further, the light source device is integrally configured by further comprising a housing box for housing the reflecting mirror, the discharge lamp and the radiator, and a blowing means provided in the housing box for circulating outside air into the housing box. You may.
【０００９】[0009]
【作用】放電灯の一方の電極部に放熱体を固定して、こ
の電極部の放熱を行なう。この際、放熱体に取り付けら
れた放熱フィンの配設枚数などを適宜選定することで、
放熱体の表面積を調整できる。A radiator is fixed to one electrode portion of the discharge lamp to radiate heat from this electrode portion. At this time, by appropriately selecting the number of radiating fins attached to the radiator, etc.,
The surface area of the radiator can be adjusted.
【００１０】また、この放熱体は、反射鏡で反射された
光が進行する側に位置することとなるが、放熱フィンの
放熱面の向きを、反射された光が進行する方向に沿うよ
うに設けることで、進行する光を遮る面積を最小限に抑
えることもできる。Further, the heat radiating member is located on the side where the light reflected by the reflecting mirror advances, but the heat radiating surface of the heat radiating fin is oriented along the direction in which the reflected light advances. By providing it, it is possible to minimize the area that blocks the traveling light.
【００１１】[0011]
【実施例】以下、本発明の実施例につき、添付図面を参
照して説明する。本実施例にかかる光源装置の構成を図
１に示す。この光源装置の主要部は、収容ボックス１０
内に配設されている。収容ボックス１０内の上方には、
光源となる放電灯１１が配設されおり、その外周部に
は、この放電灯１１で発せられる光を下方へ反射する楕
円面反射鏡１２を備えている。また、収容ボックス１０
内の下方には、楕円面反射鏡１２で反射された光を、収
容ボックス１０の側部側に反射させる反射ミラー１３を
配設している。さらに、この収容ボックス１０の側部側
には、反射ミラー１３で反射された光を外部に出射する
ライトガイド１４を設けている。一方、収容ボックス１
０の上方には、この収容ボックス１０内に空気を流通さ
せるためのファン１５を設けており、その対向側には空
気を取入れる吸風口１６を設けている。Embodiments of the present invention will be described below with reference to the accompanying drawings. The configuration of the light source device according to this embodiment is shown in FIG. The main part of this light source device is the storage box 10.
It is arranged inside. Above the inside of the storage box 10,
A discharge lamp 11 that serves as a light source is provided, and an elliptical reflecting mirror 12 that reflects the light emitted from the discharge lamp 11 downward is provided on the outer peripheral portion of the discharge lamp 11. Also, the storage box 10
A reflection mirror 13 that reflects the light reflected by the ellipsoidal reflection mirror 12 to the side of the housing box 10 is disposed below the inside. Further, a light guide 14 for emitting the light reflected by the reflection mirror 13 to the outside is provided on the side of the accommodation box 10. On the other hand, the storage box 1
A fan 15 for circulating air in the housing box 10 is provided above 0, and an air intake port 16 for taking in air is provided on the opposite side thereof.
【００１２】放電灯１１は、楕円面反射鏡１２の中心軸
上に配設されており、対向する両端部に電極部を有する
ショートアーク型の放電灯を使用している。ここでは、
上方を陽極、下方を陰極としており、各電極部には陽極
口金１１ａ、陰極口金１１ｂを設けている。一方の陰極
口金１１ｂは、反射鏡１１で反射された光が進行する光
路内に位置することとなるが、この陰極口金１１ｂには
放熱体２０を固定している。The discharge lamp 11 is arranged on the central axis of the ellipsoidal reflecting mirror 12 and uses a short arc type discharge lamp having electrode portions at opposite ends. here,
The upper part serves as an anode and the lower part serves as a cathode, and each electrode part is provided with an anode base 11a and a cathode base 11b. One of the cathode bases 11b is located in the optical path along which the light reflected by the reflecting mirror 11 travels, and the radiator 20 is fixed to the cathode base 11b.
【００１３】図２（ａ）〜（ｃ）に放熱体２０を拡大し
て示す。放熱体２０は、放熱効果の高いアルミによって
形成されており、陰極口金１１ｂに嵌合する略円筒形状
の基部２１を中心として複数の放熱フィン２２を放射状
に突設することで、所定の表面積を確保している。基部
２１の下部内側には、ねじ溝２１ａが切られており、陰
極口金１１ｂに対して螺着する構造となっている（図２
（ｃ）参照）。2A to 2C are enlarged views of the radiator 20. The heat radiator 20 is formed of aluminum having a high heat radiation effect, and a plurality of heat radiation fins 22 are radially provided around the substantially cylindrical base portion 21 fitted to the cathode base 11b so as to have a predetermined surface area. Have secured. A screw groove 21a is formed inside the lower portion of the base portion 21 and is screwed to the cathode base 11b (FIG. 2).
(C)).
【００１４】ここで、放熱フィン２２の枚数を変化させ
て、陰極口金１１ｂの温度、光出力の変化を調べた。こ
の測定では、放熱体を設けない場合を基準とし、放電灯
２０として５００Ｗの水銀キセノンランプを使用し、放
熱体としては、図２に示したタイプの放熱体２０（表面
積：６５４９ｍｍ2 ）と、図３に示すタイプの放熱体３
０（表面積：２５６０ｍｍ2 ）とを用いた。放熱体３０
は、中央部に開孔部３１を形成した短冊状のアルミ片３
２を、図に破線で示す部位を９０゜谷折りにし、一点鎖
線で示す部位を１８０゜山折りにして、２つの放熱フィ
ン３３を形成した。Here, the number of the radiation fins 22 was changed and changes in the temperature and the light output of the cathode base 11b were examined. In this measurement, a 500 W mercury-xenon lamp is used as the discharge lamp 20 based on the case where no radiator is provided, and the radiator is the radiator 20 of the type shown in FIG. 2 (surface area: 6549 mm 2 ). Radiator 3 of the type shown in FIG.
0 (surface area: 2560 mm 2 ) was used. Radiator 30
Is a strip-shaped aluminum piece 3 with an aperture 31 formed in the center.
In Fig. 2, the portion indicated by the broken line in the figure was folded at 90 °, and the portion indicated by the alternate long and short dash line was folded at 180 ° to form two radiating fins 33.
【００１５】この結果を図４の図表に示す。この結果、
放熱体を設けずに光源装置を使用すると、口金温度が急
上昇して、放電灯の寿命が短くなる結果が得られた。陰
極口金１１ｂの温度を強制空冷によって下げようとした
が、２００℃以上となってしまった。さらに、過剰の空
冷のため、放電灯内の水銀蒸気圧が上昇せず、所定の光
出力も得られなかった。一方、図３に示すタイプの放熱
体３０を２個、陰極口金１１ｂに設けると、陰極口金１
１ｂの温度を５５℃低下させることができ、光出力も前
述した場合の９９％を維持できた。さらに、図２に示す
タイプの放熱体２０を１個、陰極口金１１ｂに設ける
と、放熱体を装着しない場合に比べ、陰極口金１１ｂの
温度を７３℃低下させることができ、光出力も放熱体を
装着しない場合の９８％を維持できた。The results are shown in the chart of FIG. As a result,
When the light source device was used without providing the radiator, the temperature of the base rapidly increased, and the life of the discharge lamp was shortened. Attempts were made to lower the temperature of the cathode base 11b by forced air cooling, but the temperature reached 200 ° C or higher. Further, due to excessive air cooling, the mercury vapor pressure in the discharge lamp did not rise, and a predetermined light output could not be obtained. On the other hand, when two heat radiators 30 of the type shown in FIG. 3 are provided on the cathode base 11b, the cathode base 1
The temperature of 1b could be lowered by 55 ° C., and the light output could be maintained at 99% of the above-mentioned case. Further, if one heat radiator 20 of the type shown in FIG. 2 is provided on the cathode base 11b, the temperature of the cathode base 11b can be lowered by 73 ° C. as compared with the case where the heat radiator is not mounted, and the light output also becomes a heat radiator. It was possible to maintain 98% of the case without wearing.
【００１６】また、光源装置について、陰極口金１１ｂ
に放熱体を設けた場合と設けない場合とでライフ試験を
行なった。この試験では図５に示すように、光出力をラ
イトガイド１４（φ５mm、１m 長）に導入し、その出射
端１４ａから１０mm離れた位置における光量の最大値を
ＵＶメーター４０で測定した。なお、ＵＶメーター４０
の受光部４１の径は、φ１mmである。その結果を図６に
示す。図２の放熱体を取り付けた光源装置Ｂ−１、Ｂ−
２、Ｂ−３は、放熱体を設けない光源装置Ａ−１、Ａ−
２、Ａ−３に比べ、いずれも寿命が大幅に延びているこ
とがわかる。なお、図中の「光出力の維持率」は、（ラ
ンプ点灯積算時間における光出力）／（ランプ点灯開始
時の光出力）×１００（％）として求めた値である。Regarding the light source device, the cathode base 11b
A life test was performed with and without a heat radiator. In this test, as shown in FIG. 5, the light output was introduced into the light guide 14 (φ5 mm, 1 m length), and the maximum value of the light amount at a position 10 mm away from the emitting end 14a was measured by the UV meter 40. In addition, UV meter 40
The diameter of the light receiving portion 41 is φ1 mm. The result is shown in FIG. Light source devices B-1 and B- to which the radiator of FIG. 2 is attached
2 and B-3 are light source devices A-1 and A- which do not have a radiator.
It can be seen that the lifespan is significantly extended in comparison with 2 and A-3. The "light output maintenance rate" in the figure is a value calculated as (light output at the time of lamp lighting integration) / (light output at the start of lamp lighting) x 100 (%).
【００１７】さらに、図７に光源装置の他の構成を図示
しておく。図中、図１の光源装置と同一の構成要素には
同一の参照番号を付し、説明は省略する。Further, FIG. 7 shows another structure of the light source device. In the figure, the same components as those of the light source device of FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.
【００１８】なお、上記各実施例で示した放電灯は、図
８に示すように、対向する両端に電極部１１ａ、１１ｂ
を有し、電極間距離Ｌが２０ｍｍ以下のショートアーク
型の放電灯をいう。この放電灯の種類としては、キセノ
ンショートアークランプ、水銀キセノンランプ、超高圧
水銀ランプ、メタルハライドランプなどがある。The discharge lamp shown in each of the above embodiments has electrode parts 11a and 11b at opposite ends, as shown in FIG.
And a distance L between electrodes is 20 mm or less. Types of this discharge lamp include a xenon short arc lamp, a mercury xenon lamp, an ultra-high pressure mercury lamp, and a metal halide lamp.
【００１９】[0019]
【発明の効果】以上説明したように、本発明にかかる光
源装置は、電極部に対して放熱体を固定して構成したの
で、放熱フィンの配設枚数、表面積などを適宜選定する
ことで、電極部の放熱をコントロールすることが容易と
なりる。このため、光出力の低下を抑えることができ、
かつ、放電灯の寿命を大きく延ばすことが可能となる。As described above, since the light source device according to the present invention is constituted by fixing the heat radiator to the electrode portion, by appropriately selecting the number of heat radiation fins, the surface area, and the like, It becomes easy to control the heat radiation of the electrode part. Therefore, it is possible to suppress the decrease in light output,
In addition, it becomes possible to greatly extend the life of the discharge lamp.
【００２０】また、放熱フィンの放熱面の向きを、反射
された光が進行する方向に沿うように設けることで、進
行する光を遮る面積を最小限に抑え、かつ、一定の放熱
効率を維持することができる。さらに、反射鏡、放電灯
及び放熱体を収容箱内に配し、送風手段を用いて外気を
収容箱内に流通させることで、より効率的に電極部の放
熱を行なうことができる。Further, by disposing the heat radiation surface of the heat radiation fins along the direction in which the reflected light travels, the area that blocks the traveling light is minimized and a constant heat radiation efficiency is maintained. can do. Further, by disposing the reflecting mirror, the discharge lamp, and the radiator in the housing box and using the air blower to circulate the outside air into the housing box, the electrode parts can be more efficiently radiated.
【図１】本実施例にかかる光源装置の構成を示す概略構
成図である。FIG. 1 is a schematic configuration diagram showing a configuration of a light source device according to an embodiment.
【図２】（ａ）は電極部に放熱体を固定した状態を示す
拡大斜視図、（ｂ）は放熱体の平面図、（ｃ）は図２
（ｂ）におけるＡ−Ａ線断面図である。2A is an enlarged perspective view showing a state where a heat radiator is fixed to an electrode portion, FIG. 2B is a plan view of the heat radiator, and FIG.
It is the sectional view on the AA line in (b).
【図３】（ａ）は短冊状のアルミ片を示す平面図、
（ｂ）は完成した放熱体の平面図、（ｃ）はその側面図
である。FIG. 3A is a plan view showing a strip-shaped aluminum piece,
(B) is a plan view of the completed heat radiator, and (c) is a side view thereof.
【図４】放熱フィンの枚数を変化させた場合における、
陰極口金の温度変化、光出力の変化を示す図表である。FIG. 4 shows a case where the number of heat radiation fins is changed,
6 is a chart showing changes in temperature and light output of the cathode base.
【図５】ライフ試験を実施した装置の構成を示す説明図
である。FIG. 5 is an explanatory diagram showing a configuration of an apparatus that has been subjected to a life test.
【図６】ライフ試験の試験結果を示すグラフである。FIG. 6 is a graph showing test results of a life test.
【図７】光源装置の他の構成例を示す図である。FIG. 7 is a diagram showing another configuration example of the light source device.
【図８】ショートアーク型の放電灯を示す説明図であ
る。FIG. 8 is an explanatory diagram showing a short arc type discharge lamp.
１０…収容ボックス、１１…放電灯、１２…楕円面反射
鏡、１５…ファン、２０…放熱体、２１…基部、２２…
放熱フィン、３０…放熱体、３３…放熱フィン。10 ... Storage box, 11 ... Discharge lamp, 12 ... Elliptical reflecting mirror, 15 ... Fan, 20 ... Radiator, 21 ... Base, 22 ...
Radiating fin, 30 ... Radiating body, 33 ... Radiating fin.
Claims (3)
配置され、かつ、この反射鏡で反射された光が進行する
光路中に一方の前記電極部が配置される放電灯と、 前記一方の電極部に固定され、この部位の放熱を行なう
放熱体とを備え、 前記放熱体は、前記一方の電極部から突出する複数の放
熱フィンを有することを特徴とする光源装置。1. A reflecting mirror that reflects light in a predetermined direction, and electrode portions at opposite ends, which are arranged at substantially the center of the reflecting mirror and travel by the light reflected by the reflecting mirror. A discharge lamp in which one of the electrode portions is disposed in the optical path, and a heat radiator that is fixed to the one electrode portion and radiates heat from this portion, and the heat radiator projects from the one electrode portion. A light source device having a plurality of heat radiation fins.
が前記反射鏡で反射された光が進行する方向に沿うよう
に配置される請求項１記載の光源装置。2. The light source device according to claim 1, wherein each of the heat radiation fins of the heat radiator is arranged such that a heat radiation surface thereof is along a direction in which the light reflected by the reflecting mirror travels.
収容する収容箱と、 前記収容箱に設けられ、外気をこの収容箱の内部に流通
させる送風手段とを、さらに備える請求項１又は２記載
の光源装置。3. A housing box for housing the reflecting mirror, the discharge lamp and the radiator, and an air blower provided in the housing box for circulating outside air into the housing box. Alternatively, the light source device according to item 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23910094A JPH08106812A (en) | 1994-10-03 | 1994-10-03 | Light source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23910094A JPH08106812A (en) | 1994-10-03 | 1994-10-03 | Light source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08106812A true JPH08106812A (en) | 1996-04-23 |
Family
ID=17039814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23910094A Pending JPH08106812A (en) | 1994-10-03 | 1994-10-03 | Light source device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08106812A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5968397A (en) * | 1997-06-06 | 1999-10-19 | Amana Company, L.P. | Apparatus for cooling a quartz halogen lamp with heat conducting convector secured to the lamp terminal or socket |
| JP2000082322A (en) * | 1998-09-08 | 2000-03-21 | Ushio Inc | Light source unit |
| JP2006324206A (en) * | 2005-05-20 | 2006-11-30 | Iwasaki Electric Co Ltd | Discharge lamp |
| WO2006128318A1 (en) * | 2005-03-31 | 2006-12-07 | Neobulb Technologies, Inc. | A high power led illuminating equipment having high thermal diffusivity |
| US8540377B2 (en) | 2009-03-16 | 2013-09-24 | Seiko Epson Corporation | Projector light source device having projections regulating cooling airflow |
| JP2013197020A (en) * | 2012-03-22 | 2013-09-30 | Kobe Steel Ltd | Heat sink for in-vehicle led lamp |
-
1994
- 1994-10-03 JP JP23910094A patent/JPH08106812A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5968397A (en) * | 1997-06-06 | 1999-10-19 | Amana Company, L.P. | Apparatus for cooling a quartz halogen lamp with heat conducting convector secured to the lamp terminal or socket |
| JP2000082322A (en) * | 1998-09-08 | 2000-03-21 | Ushio Inc | Light source unit |
| WO2006128318A1 (en) * | 2005-03-31 | 2006-12-07 | Neobulb Technologies, Inc. | A high power led illuminating equipment having high thermal diffusivity |
| US7726844B2 (en) | 2005-03-31 | 2010-06-01 | Neobulb Technologies, Inc. | Illuminating equipment using high power LED with high efficiency of heat dissipation |
| JP2006324206A (en) * | 2005-05-20 | 2006-11-30 | Iwasaki Electric Co Ltd | Discharge lamp |
| US8540377B2 (en) | 2009-03-16 | 2013-09-24 | Seiko Epson Corporation | Projector light source device having projections regulating cooling airflow |
| JP2013197020A (en) * | 2012-03-22 | 2013-09-30 | Kobe Steel Ltd | Heat sink for in-vehicle led lamp |
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