JPS5494782A - Incandescent lamp - Google Patents

Incandescent lamp

Info

Publication number
JPS5494782A
JPS5494782A JP123478A JP123478A JPS5494782A JP S5494782 A JPS5494782 A JP S5494782A JP 123478 A JP123478 A JP 123478A JP 123478 A JP123478 A JP 123478A JP S5494782 A JPS5494782 A JP S5494782A
Authority
JP
Japan
Prior art keywords
rhenium
lamp
incandescent lamp
temperature
doped tungsten
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
Application number
JP123478A
Other languages
Japanese (ja)
Inventor
Masaya Fujisaki
Akira Hashima
Ryoji Yoshiike
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
Original Assignee
Toshiba Corp
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
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP123478A priority Critical patent/JPS5494782A/en
Publication of JPS5494782A publication Critical patent/JPS5494782A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the vibration resistance and coiling workability of an incandescent lamp by turning the lamp ON at a temperature lower than 2,700°C. using a coil filament of doped tungsten containing 2 to 4 by weigth % rhenium.
CONSTITUTION: It was discovered that the strength of a filament against external vibration and impact is increased using doped tungsten containing rhenium for a incandescent lamp in view of the remarkable improvement of brittleness peculiar for the tungsten wire by adding suitable amount of allow of doped tungsten and rhenium. Since the rhenium content ratio seriously affects the wire mechanical and lamp life characteristics, the rhenium content most be determined from the point of vibration resistance and using temperature. As a result of experiments, 2 to 4 by weight % of rhenium is most preferable at 2,700°C. of using temperature.
COPYRIGHT: (C)1979,JPO&Japio
JP123478A 1978-01-11 1978-01-11 Incandescent lamp Pending JPS5494782A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP123478A JPS5494782A (en) 1978-01-11 1978-01-11 Incandescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP123478A JPS5494782A (en) 1978-01-11 1978-01-11 Incandescent lamp

Publications (1)

Publication Number Publication Date
JPS5494782A true JPS5494782A (en) 1979-07-26

Family

ID=11495766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP123478A Pending JPS5494782A (en) 1978-01-11 1978-01-11 Incandescent lamp

Country Status (1)

Country Link
JP (1) JPS5494782A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008129448A1 (en) * 2007-04-18 2008-10-30 Philips Intellectual Property & Standards Gmbh Halogen lamp with improved lifetime
WO2012037982A1 (en) 2010-09-24 2012-03-29 Osram Gesellschaft mit beschränkter Haftung Luminous element for halogen light bulb and associated halogen light bulb
WO2023228834A1 (en) * 2022-05-25 2023-11-30 パナソニックＩｐマネジメント株式会社 Fiber product

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008129448A1 (en) * 2007-04-18 2008-10-30 Philips Intellectual Property & Standards Gmbh Halogen lamp with improved lifetime
WO2012037982A1 (en) 2010-09-24 2012-03-29 Osram Gesellschaft mit beschränkter Haftung Luminous element for halogen light bulb and associated halogen light bulb
WO2023228834A1 (en) * 2022-05-25 2023-11-30 パナソニックＩｐマネジメント株式会社 Fiber product

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