JPH0138355B2 - - Google Patents
Info
- Publication number
- JPH0138355B2 JPH0138355B2 JP55040168A JP4016880A JPH0138355B2 JP H0138355 B2 JPH0138355 B2 JP H0138355B2 JP 55040168 A JP55040168 A JP 55040168A JP 4016880 A JP4016880 A JP 4016880A JP H0138355 B2 JPH0138355 B2 JP H0138355B2
- Authority
- JP
- Japan
- Prior art keywords
- arc tube
- aluminum oxide
- concentration
- ppm
- mol
- 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
Links
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 description 9
- 239000011521 glass Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 229910052724 xenon Inorganic materials 0.000 description 5
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- -1 aluminum alkoxide Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 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
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/302—Vessels; Containers characterised by the material of the vessel
Description
【発明の詳細な説明】 本発明は電球に関するものである。[Detailed description of the invention] The present invention relates to a light bulb.
従来、キセノン放電灯、超高圧水銀灯等の電球
においては、その発光空間を囲繞する発光管の材
質として、耐熱性の大きい、アルカリ不純物（ナ
トリウム、カリウム、リチウム）の濃度が20ppm
（モル）以下の高純度石英ガラスが用いられてい
る。 Conventionally, in light bulbs such as xenon discharge lamps and ultra-high pressure mercury lamps, the material of the arc tube that surrounds the light emitting space is a material with a high heat resistance and a concentration of alkaline impurities (sodium, potassium, lithium) of 20 ppm.
(mol) or less high purity quartz glass is used.
しかしながら斯かる低アルカリ不純物濃度の石
英ガラスを材質として成る発光管を具えた電球、
例えばキセノン放電灯にあつても第１図に示すよ
うに、放電電極１が配置された発光部囲繞部２は
ともかく、前記放電電極１の基端が直接埋没する
ようにして固定される電極支持部３においては、
前記放電電極１が非常な高温となるために、斜線
を付して示すように歪４が発生するようになる。
この歪量の測定は形状の複雑さから困難であつて
その大きさの絶対値を厳密に知ることはできない
が、かなり大きな歪であつて使用時間の経過によ
りクラツクが生ずるようになる。 However, a light bulb equipped with an arc tube made of quartz glass with a low alkali impurity concentration,
For example, in the case of a xenon discharge lamp, as shown in FIG. 1, apart from the light emitting part surrounding part 2 in which the discharge electrode 1 is arranged, there is an electrode support in which the base end of the discharge electrode 1 is fixed so as to be directly buried therein. In part 3,
Since the discharge electrode 1 reaches a very high temperature, strain 4 occurs as shown by hatching.
Although it is difficult to measure the amount of distortion due to the complexity of the shape, and the absolute value of the amount cannot be precisely known, it is a fairly large distortion and cracks will occur as the usage time progresses.
本発明は以上の如き欠点を除き、熱歪の発生が
極めて小さく、従つて安定した性能と長い使用寿
命を有する電球を提供することを目的とする。 It is an object of the present invention to eliminate the above-mentioned drawbacks and to provide an electric light bulb that exhibits extremely low thermal distortion and therefore has stable performance and a long service life.
以下本発明の実施例について説明する。 Examples of the present invention will be described below.
本発明においては、アルカリ不純物の濃度が
20ppm（モル）以下の高純度石英ガラス中に、酸
化アルミニウムを100〜3000ppm（モル）の範囲内
で混入せしめたものを材質として電球の発光管を
構成せしめる。 In the present invention, the concentration of alkaline impurities is
The arc tube of a light bulb is made of a material in which aluminum oxide is mixed in a range of 100 to 3000 ppm (mol) into high-purity quartz glass of 20 ppm (mol) or less.
本発明電球は以上のような構成であるから、後
述する実験例からも明かなように、その発光管に
おいて生ずる熱歪が非常に小さく、従つて第１図
のように放電電極１の基端を電極支持部３に埋没
するように固定してせしめた場合にも、当該電極
支持部３に熱歪によりクラツクが生ずることがな
い。この結果、本発明によれば、安定な性能と非
常に長い使用寿命の電球を提供することができ
る。 Since the light bulb of the present invention has the above-mentioned configuration, as is clear from the experimental examples described later, the thermal strain that occurs in the arc tube is very small. Even when the electrode support part 3 is fixed so as to be buried in the electrode support part 3, cracks will not occur in the electrode support part 3 due to thermal strain. As a result, according to the present invention, a light bulb with stable performance and a very long service life can be provided.
実験においては、アルカリ不純物濃度が20ppm
（モル）以下の高純度石英ガラスを粉砕して120メ
ツシユの篩にかけ、これを通過したガラス粉末を
フツ酸により洗浄した。この洗浄ガラス粉末の一
部に、アルミニウムのアリコキシドによる化学蒸
着法（CVD法）を適用して酸化アルミニウムを
被着せしめて処理ガラス粉末を得、この処理ガラ
ス粉末を前記洗浄ガラス粉末の残部の適量と混合
して、全体における酸化アルミニウム含有率の異
なつた種々の材料粉末を作り、これらの各々をモ
リブデンルツボに入れて水素雰囲気下で温度約
2000℃に15分間加熱溶融せしめた後急冷し、ルツ
ボを酸溶解して除却してガラスインゴツトを得、
これを加工して外径10mm、肉厚２mm、長さ10mmの
中空円筒状の発光管材を作り、これを用いて温度
1100℃で４時間熱処理する工程を含む方法により
定格消費電力75Wのキセノン放電灯発光管を製作
した。 In the experiment, the alkali impurity concentration was 20ppm.
(mole) or less of high-purity quartz glass was crushed and passed through a 120-mesh sieve, and the glass powder that passed through the sieve was washed with hydrofluoric acid. A chemical vapor deposition method (CVD method) using aluminum alkoxide is applied to a part of this cleaned glass powder to coat aluminum oxide to obtain treated glass powder, and this treated glass powder is added to an appropriate amount of the remaining portion of the cleaned glass powder. to make various material powders with different total aluminum oxide contents, and each of these was placed in a molybdenum crucible and heated under a hydrogen atmosphere at a temperature of approximately
After heating and melting at 2000°C for 15 minutes, it was rapidly cooled, and the crucible was dissolved in acid and discarded to obtain a glass ingot.
This is processed to make a hollow cylindrical arc tube material with an outer diameter of 10 mm, a wall thickness of 2 mm, and a length of 10 mm.
A xenon discharge lamp arc tube with a rated power consumption of 75W was manufactured using a method that included heat treatment at 1100℃ for 4 hours.
斯くして得られた種々のキセノン放電灯を点灯
せしめて連続点灯100時間後における、電極支持
部の最大歪量（相対値）と化学分析によつて求め
た当該発光管の材質における酸化アルミニウム含
有率との関係を求めた。ここで最大歪量について
は、対象放電灯を、その発光管の材質ガラスと等
しい屈折率を有するレンズ効果補償用液体、（例
えば材質ガラスが石英ガラスである場合には四塩
化炭素）が充填されたセル中に浸漬し、単色光源
よりの光をレンズ及び偏光子を介して前記発光管
にその管軸に直角な方向から投射し、当該発光管
対象部分、即ち電極支持部における前記光と直角
な方向に位置する外側表層を透過したその光につ
いて検光子により偏光角を、三菱電機(株)製の偏光
式歪計型式DS−601により測定し、これを歪量を
表わすパラメータとした。結果は第２図に示す通
りである。尚各放電灯の電極支持部の最大温度は
何れも約900℃であつた。 After 100 hours of continuous lighting of the various xenon discharge lamps obtained in this way, the maximum strain (relative value) of the electrode support and the aluminum oxide content in the material of the arc tube determined by chemical analysis. The relationship with the rate was determined. Regarding the maximum distortion amount, the target discharge lamp is filled with a lens effect compensating liquid (for example, carbon tetrachloride when the material glass is quartz glass) that has a refractive index equal to that of the glass material of the arc tube. The light from the monochromatic light source is projected onto the arc tube from a direction perpendicular to the tube axis through a lens and a polarizer, and the light at the target part of the arc tube, that is, the electrode support part is projected at right angles to the light from the arc tube. The polarization angle of the light transmitted through the outer surface layer located in the direction was measured by an analyzer using a polarization strain meter model DS-601 manufactured by Mitsubishi Electric Corporation, and this was used as a parameter representing the amount of strain. The results are shown in FIG. The maximum temperature of the electrode supporting portion of each discharge lamp was approximately 900°C.
この第２図より明かなように、酸化アルミニウ
ムの含有率が100〜3000ppm（モル）の範囲内であ
ると発生する歪が小さく、酸化アルミニウムの含
有率が小さ過ぎても或いは大き過ぎても歪が大き
くなつてしまうことが容易に理解される。このよ
うに、本発明によれば、アルカリ不純物の濃度が
20ppm（モル）以下でかつ酸化アルミニウムの濃
度が100〜3000ppm（モル）である石英ガラスを発
光管の材質として用いることにより、熱歪が小さ
くてクラツクが生ずることがなく、従つて安定な
性能と非常に長い使用寿命とを有する電球を提供
することができる。 As is clear from Figure 2, the strain that occurs is small when the aluminum oxide content is within the range of 100 to 3000 ppm (mol), and even if the aluminum oxide content is too small or too large, the strain is small. It is easy to understand that the Thus, according to the present invention, the concentration of alkaline impurities is
By using quartz glass with an aluminum oxide concentration of 20 ppm (mol) or less and an aluminum oxide concentration of 100 to 3000 ppm (mol) as the material for the arc tube, thermal distortion is small and no cracks occur, resulting in stable performance. It is possible to provide a light bulb with a very long service life.
第１図はキセノン放電灯の要部の説明図、第２
図は酸化アルミニウムの濃度と電極支持部におけ
る最大熱歪との関係を示す曲線図である。
１……放電電極、２……発光部囲繞部、３……
電極支持部、４……歪。
Figure 1 is an explanatory diagram of the main parts of a xenon discharge lamp, Figure 2
The figure is a curve diagram showing the relationship between the concentration of aluminum oxide and the maximum thermal strain in the electrode support portion. DESCRIPTION OF SYMBOLS 1... Discharge electrode, 2... Light emitting part surrounding part, 3...
Electrode support part, 4...distortion.
Claims (1)
でかつ酸化アルミニウムの濃度が100〜3000ppm
（モル）である石英ガラスより成る発光管により
構成せしめたことを特徴とする電球。1 The concentration of alkaline impurities is 20 ppm (mol) or less and the concentration of aluminum oxide is 100 to 3000 ppm
A light bulb characterized in that it is composed of an arc tube made of quartz glass (mol).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4016880A JPS56138853A (en) | 1980-03-31 | 1980-03-31 | Electric lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4016880A JPS56138853A (en) | 1980-03-31 | 1980-03-31 | Electric lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56138853A JPS56138853A (en) | 1981-10-29 |
| JPH0138355B2 true JPH0138355B2 (en) | 1989-08-14 |
Family
ID=12573228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4016880A Granted JPS56138853A (en) | 1980-03-31 | 1980-03-31 | Electric lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56138853A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09512384A (en) * | 1995-02-21 | 1997-12-09 | ゼネラル・エレクトリック・カンパニイ | Sodium halide discharge lamp |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3582500B2 (en) * | 2001-05-23 | 2004-10-27 | ウシオ電機株式会社 | Ultra high pressure mercury lamp |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4913842A (en) * | 1972-05-20 | 1974-02-06 | ||
| JPS5437388A (en) * | 1977-08-29 | 1979-03-19 | Toshiba Corp | Discharge lamp |
-
1980
- 1980-03-31 JP JP4016880A patent/JPS56138853A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4913842A (en) * | 1972-05-20 | 1974-02-06 | ||
| JPS5437388A (en) * | 1977-08-29 | 1979-03-19 | Toshiba Corp | Discharge lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09512384A (en) * | 1995-02-21 | 1997-12-09 | ゼネラル・エレクトリック・カンパニイ | Sodium halide discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56138853A (en) | 1981-10-29 |
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