JPS5456270A - Double tubular dischage lamp - Google Patents

Double tubular dischage lamp

Info

Publication number
JPS5456270A
JPS5456270A JP12223377A JP12223377A JPS5456270A JP S5456270 A JPS5456270 A JP S5456270A JP 12223377 A JP12223377 A JP 12223377A JP 12223377 A JP12223377 A JP 12223377A JP S5456270 A JPS5456270 A JP S5456270A
Authority
JP
Japan
Prior art keywords
tube
outer tube
etched
luminous
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.)
Granted
Application number
JP12223377A
Other languages
Japanese (ja)
Other versions
JPS5737214B2 (en
Inventor
Takahiro Sugimoto
Yoshio Hirose
Akihiro Yonezawa
Keiji Kobayashi
Toshiyuki Sago
Koji Nakamura
Katsuhiko Suzuki
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.)
Toshiba Corp
Toray Industries Inc
Original Assignee
Toshiba Corp
Toray Industries Inc
Tokyo Shibaura Electric Co Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=14830857&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS5456270(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Toshiba Corp, Toray Industries Inc, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12223377A priority Critical patent/JPS5456270A/en
Publication of JPS5456270A publication Critical patent/JPS5456270A/en
Publication of JPS5737214B2 publication Critical patent/JPS5737214B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To improve life characteristics of a discharge lamp with a double tube construction in which a luminous tube is housed in a glass outer tube with at least the inner surface etched.
CONSTITUTION: After molded, an outer tube 1 is washed. Then, dipped into an etching liquid cimposed of a solution containing a hydrofluoric acid, the inner and outer surfaces of the outer tube is etched by a given thickness and the liquid is washed off. The thickness of the layer to be etched is set at more than 5μ. The luminous tube 7 is retained in the outer tube. Into the luminous tube, sealed is a specified amount of mercury, rare gas such as Ar for starting, more than one kind of metallic halogen compound including NaI while into the outer tube, a specified amount of N2 or the like. The inner surface of the outer tube 1 is previously removed by etching so that impure gas not present in such a large amount as generated when the tube is molded. Therefore, less pure gas is released into the outer tube during the lighting while hydrogen infiltrating into the luminous tube passing a hot qualtz bulb 8 can be reduced. This lessens the blacking of the bulb 8, thereby improving the life characteristics of the lamp
COPYRIGHT: (C)1979,JPO&Japio
JP12223377A 1977-10-12 1977-10-12 Double tubular dischage lamp Granted JPS5456270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12223377A JPS5456270A (en) 1977-10-12 1977-10-12 Double tubular dischage lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12223377A JPS5456270A (en) 1977-10-12 1977-10-12 Double tubular dischage lamp

Publications (2)

Publication Number Publication Date
JPS5456270A true JPS5456270A (en) 1979-05-07
JPS5737214B2 JPS5737214B2 (en) 1982-08-09

Family

ID=14830857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12223377A Granted JPS5456270A (en) 1977-10-12 1977-10-12 Double tubular dischage lamp

Country Status (1)

Country Link
JP (1) JPS5456270A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008532236A (en) * 2005-02-28 2008-08-14 パテント−トロイハント−ゲゼルシヤフト フユール エレクトリツシエ グリユーラムペン ミツト ベシユレンクテル ハフツング Method for manufacturing discharge tube arrangement structure and such discharge tube arrangement structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008532236A (en) * 2005-02-28 2008-08-14 パテント−トロイハント−ゲゼルシヤフト フユール エレクトリツシエ グリユーラムペン ミツト ベシユレンクテル ハフツング Method for manufacturing discharge tube arrangement structure and such discharge tube arrangement structure

Also Published As

Publication number Publication date
JPS5737214B2 (en) 1982-08-09

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