JPH03219547A - Light source for projector device - Google Patents
Light source for projector deviceInfo
- Publication number
- JPH03219547A JPH03219547A JP1350090A JP1350090A JPH03219547A JP H03219547 A JPH03219547 A JP H03219547A JP 1350090 A JP1350090 A JP 1350090A JP 1350090 A JP1350090 A JP 1350090A JP H03219547 A JPH03219547 A JP H03219547A
- Authority
- JP
- Japan
- Prior art keywords
- light
- coat
- tube
- arc tube
- light source
- 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
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 230000000007 visual effect Effects 0.000 abstract 2
- 230000006866 deterioration Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、映像を投写、又は反射等によって、スクリー
ンに写し出す液晶プロジェクションテレビの投写用の光
源に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a light source for projection of a liquid crystal projection television that projects an image onto a screen by projection or reflection.
従来この種の投写用の光源として用いられる発光管は、
石英、或いはセラミックにより管体が形成され、内部に
アルゴン等の始動用希ガスと、水銀と、スカンジウム−
ナトリウム添加物等の金属ハロゲン物が封入されている
。The arc tube conventionally used as a light source for this type of projection is
The tube body is made of quartz or ceramic, and inside it contains a rare starting gas such as argon, mercury, and scandium.
Contains metal halides such as sodium additives.
この発光管の発光は、四方に放散されるために、第４図
のように発光管１の後方に、放物面鏡２を配置し、その
反射光によって、発光管１の発光を平行光線とし、照射
面に照射するものである。Since the light emitted from the arc tube is diffused in all directions, a parabolic mirror 2 is placed behind the arc tube 1 as shown in FIG. and irradiates the irradiated surface.
又、別の方法としては、第５図のように発光管１の後方
に、楕円面＠３を配置し、その反射光をコンデンサレン
ズ４で集光して、平行光線とすることもある。Alternatively, as shown in FIG. 5, an ellipsoidal surface @3 may be arranged behind the arc tube 1, and the reflected light may be condensed by a condenser lens 4 to form parallel light beams.
更に、第６図のように、発光管を円筒形の外管５で覆っ
た２重管構造とし、その後方に凹面鏡６を配置し、その
反射光をコンデンサレンズ７で集光して平行光線とする
ものもある。Furthermore, as shown in Fig. 6, the arc tube has a double tube structure in which the arc tube is covered with a cylindrical outer tube 5, a concave mirror 6 is arranged behind it, and the reflected light is condensed by a condenser lens 7 to form parallel rays. There are some that do.
前記の第４図、第５図に示した光源は、発光管１の主電
極に接続するためのリード綿８が大気中に露出し、かつ
発光管１の発熱によって高温化されるため、酸化がひど
く、劣化し易いため、光源としての寿命が短い欠点があ
った。In the light source shown in FIGS. 4 and 5, the lead cotton 8 for connecting to the main electrode of the arc tube 1 is exposed to the atmosphere and heated to high temperature by the heat generated by the arc tube 1, so it is not oxidized. It has the drawback of having a short lifespan as a light source, as it has a high level of oxidation and easily deteriorates.
第６図の２重管構造のものは、発光管と外管５との間を
真空、若しくは無酸素気体を封入することによって、リ
ート線の酸化を防ぎ、光源としての寿命の長期化を図る
ことができるが、外管５が円筒形のため、光の利用効率
が悪く、しかも光の均一性に欠ける欠点があった。The double-tube structure shown in Fig. 6 prevents oxidation of the Riet wire by filling a vacuum or an oxygen-free gas between the arc tube and the outer tube 5, thereby prolonging the life of the light source. However, since the outer tube 5 is cylindrical, the light utilization efficiency is poor and the light is not uniform.
の均一性が得られ、小型化か可能であると共に、熱の放
散性を良好にすることによって、寿命を長期化できる投
写装置用光源を提供することを目的とする。It is an object of the present invention to provide a light source for a projection device, which can obtain uniformity of color, can be miniaturized, and has a long lifespan by improving heat dissipation.
本発明は、前述の目的を達成するための投写装置用光源
の手段に関し、発光管を覆い、発光管に接続されたリー
ド線を内蔵すると共に、その一部が発光管の発光部を中
心とした球形に形成されている外管と、該外管における
球形の外面の一部に形成された可視光を反則するコート
とによって構成され、また、このコートの外面に接合さ
れ、放熱フィンが形成されている放熱体とによって構成
したものである。The present invention relates to means for a light source for a projection device to achieve the above-mentioned object, which covers an arc tube and has a built-in lead wire connected to the arc tube, and a part of which is centered around the light emitting part of the arc tube. It is composed of an outer tube formed into a spherical shape, and a coat that reflects visible light formed on a part of the spherical outer surface of the outer tube, and is bonded to the outer surface of this coat to form a heat dissipation fin. It is composed of a heat sink and a heat sink.
本発明は、従来の投写装置用光源の前述の課題を解消し
、２重管構造としてリード線の酸化を防くにも係わらず
、光の利用効率が高く、しかも光〔発明の実施例〕
次に、本発明の実施の一例を、第１図について説明する
。The present invention solves the above-mentioned problems of the conventional light source for a projection device, has a double tube structure, prevents oxidation of the lead wire, and has high light utilization efficiency. Next, an example of the implementation of the present invention will be explained with reference to FIG.
発光管１は従来と同様に外管５内にリード線８で支持さ
れていて、発光管１と外管５との間は真空、若しくは無
酸素気体が封入されていて、リード線８の酸化を防止し
ていることは、従来と変わるものではない。The arc tube 1 is supported within an outer tube 5 by a lead wire 8 as in the conventional case, and a vacuum or an oxygen-free gas is filled between the arc tube 1 and the outer tube 5 to prevent oxidation of the lead wire 8. The fact that it prevents this is no different than before.
しかし、外管５は、発光管１の２つの主電極間の発光部
を中心として、その一部が球形５ａに形成され、発光部
からの光線が均一に通過できるようになっている。However, a part of the outer tube 5 is formed into a spherical shape 5a centered around the light emitting part between the two main electrodes of the arc tube 1, so that the light rays from the light emitting part can uniformly pass through.
そして、その球形５ａの略半面には、その外面に可視光
線を反射するコー１−１０が形成され、発光管１の発光
を反射する。Then, on approximately half the surface of the spherical shape 5a, a line 1-10 that reflects visible light is formed on the outer surface thereof, and reflects the light emitted from the arc tube 1.
この反射光と、発光管１からの直射光とは、コンデンサ
レンズ１１に至り、平行光線に集光される。This reflected light and the direct light from the arc tube 1 reach the condenser lens 11 and are condensed into parallel light beams.
一方、外管５には、コート１０が施された球形５ａに、
放熱フィン１２ａが形成されている熱良導体の放熱体１
２が接着剤１３で接着されている。On the other hand, the outer tube 5 has a spherical shape 5a coated with a coating 10.
A heat dissipating body 1 having good thermal conductivity and having heat dissipating fins 12a formed therein.
2 are adhered with adhesive 13.
なお、接着剤１３としては、例えば、セラミックタイプ
のものを使用すれば、耐熱性に優れ良好である。Note that, for example, if a ceramic type adhesive is used as the adhesive 13, it has excellent heat resistance.
前記コート１０には、発光管１の発熱が輻射等によって
蓄積され、高温化してコート１０の劣化が促進され易い
のを、放熱体１２に伝達して、放熱フィン１２ａから放
散させ、その高温化による劣化の促進を防いでいる。The heat generated by the arc tube 1 is accumulated in the coat 10 by radiation, etc., and the temperature increases, which tends to accelerate the deterioration of the coat 10.The coat 10 transmits the heat generated from the arc tube 1 to the heat radiating body 12, and dissipates it from the heat radiating fins 12a, thereby increasing the temperature. This prevents the acceleration of deterioration due to
又、外管５内にはゲッタ１４が設けられていて、外管５
内に放出される水素等の不純ガスを吸着している。Further, a getter 14 is provided inside the outer tube 5, and a getter 14 is provided inside the outer tube 5.
It adsorbs impure gases such as hydrogen that are released into the atmosphere.
前記実施例においては、円筒形の外管５の中心部に球形
５ａを形成したが、外管５の形状としては第２図に示し
た電球形、或いは第６図のような形状とすることもでき
る。In the above embodiment, the spherical shape 5a was formed at the center of the cylindrical outer tube 5, but the shape of the outer tube 5 may be the bulb shape shown in FIG. 2 or the shape shown in FIG. 6. You can also do it.
これ等の場合でも、その球形５ａの略半面には可視光線
を反射するコート１０、及びその背面に放熱体１２を接
合することには変わりはない。Even in these cases, the coating 10 that reflects visible light is still attached to approximately half the surface of the spherical shape 5a, and the heat sink 12 is still attached to the back surface thereof.
また、球形５ａは放物面状、楕円面状としてもよく、さ
らに、放熱体１２は必ずしも必要ではない。Further, the spherical shape 5a may be a paraboloid or an ellipsoid, and the heat sink 12 is not necessarily required.
［発明の効果］
本発明ば斜上のように、発光管の発光部を中心として、
外管は球形に形成されるので、発光管からの発光は均一
に通過することができ、光の均一性が確保できる。[Effects of the Invention] According to the present invention, as shown above, centering on the light emitting part of the arc tube,
Since the outer tube is formed into a spherical shape, the light emitted from the arc tube can pass through uniformly, and uniformity of light can be ensured.
そして、この球形の外面の一部に、可視光線を反射する
コートを設けたので、従来のように、放物面鏡、楕円面
鏡、凹面鏡を別個に設ける必要がなくなり、光源の小型
化を図ることができる。Since a coating that reflects visible light is provided on a part of the outer surface of this spherical shape, it is no longer necessary to separately provide a parabolic mirror, elliptical mirror, and concave mirror as in the past, and the light source can be made more compact. can be achieved.
又、このコートの背面に放熱フィンを有する放熱体が接
合することによって、コートの蓄熱を放散し、その高温
化を防止して、コー１〜の高熱化による劣化の促進を防
くことができると共に、コート部の劣下を防止できるこ
とから、球形部分の小型化を図ることができ、かつ、コ
ート面と発光体を近づけることができるものである。In addition, by bonding a heat dissipating body having heat dissipating fins to the back of this coat, it is possible to dissipate the heat accumulated in the coat, prevent the coat from increasing in temperature, and prevent the acceleration of deterioration due to high heat of the coat. In addition, since deterioration of the coated portion can be prevented, the spherical portion can be made smaller, and the coated surface and the light emitting body can be brought closer together.
第１図は本発明の一実施例の断面図、
第２図は他の実施例の外管を示す断面図、第３図は同上
の他の実施例の側面図、
第４図〜第６図は従来の光源の断面図である。
１・・・発光管、５・・・外管、５ａ・・・球形、訃・
・ＩＪ−ド線、１０・・・コート、１２・・・放熱体、
１２ａ・・・放熱フィン。Fig. 1 is a sectional view of one embodiment of the present invention, Fig. 2 is a sectional view showing the outer tube of another embodiment, Fig. 3 is a side view of another embodiment of the same as above, and Figs. 4 to 6. The figure is a cross-sectional view of a conventional light source. 1... Arc tube, 5... Outer tube, 5a... Spherical, butt
・IJ-do wire, 10... coat, 12... heat sink,
12a...radiating fin.
Claims (1)
蔵すると共に、その内形の一部が発光管の発光部を中心
とした球形に形成されている外管と、該外管における球
形の外面の一部に形成された可視光を反射するコートと
を備えたことを特徴とする投写装置用光源。（２）発光
管を覆い、発光管に接続されたリード線を内蔵すると共
に、その内形の一部が発光管の発光部を中心とした球形
に形成されている外管と、該外管における球形の外面の
一部に形成された可視光を反射するコートと、該コート
の外面に接合され、放熱フィンが形成されている放熱体
とを備えたことを特徴とする投写装置用光源。(1) An outer tube that covers the arc tube, houses a lead wire connected to the arc tube, and has a part of its inner shape formed into a spherical shape centered on the light emitting part of the arc tube, and the outer tube A light source for a projection device, comprising: a coating that reflects visible light formed on a part of the spherical outer surface of the projection device. (2) An outer tube that covers the arc tube, houses a lead wire connected to the arc tube, and has a part of its inner shape formed into a spherical shape centered on the light emitting part of the arc tube, and the outer tube A light source for a projection device, comprising: a coat that reflects visible light formed on a part of a spherical outer surface; and a heat radiator joined to the outer surface of the coat and having heat dissipation fins formed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1350090A JPH03219547A (en) | 1990-01-25 | 1990-01-25 | Light source for projector device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1350090A JPH03219547A (en) | 1990-01-25 | 1990-01-25 | Light source for projector device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03219547A true JPH03219547A (en) | 1991-09-26 |
Family
ID=11834841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1350090A Pending JPH03219547A (en) | 1990-01-25 | 1990-01-25 | Light source for projector device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03219547A (en) |
-
1990
- 1990-01-25 JP JP1350090A patent/JPH03219547A/en active Pending
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