JPS5290181A - Incandescent lamp - Google Patents

Incandescent lamp

Info

Publication number
JPS5290181A
JPS5290181A JP586576A JP586576A JPS5290181A JP S5290181 A JPS5290181 A JP S5290181A JP 586576 A JP586576 A JP 586576A JP 586576 A JP586576 A JP 586576A JP S5290181 A JPS5290181 A JP S5290181A
Authority
JP
Japan
Prior art keywords
incandescent lamp
blackening
filaments
corrosion
decreased
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
JP586576A
Other languages
Japanese (ja)
Inventor
Makoto Oyamada
Yosuke Hirao
Atsushi Saida
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 JP586576A priority Critical patent/JPS5290181A/en
Publication of JPS5290181A publication Critical patent/JPS5290181A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide an incandescent lamp, whose tube diameter is greater than 18 mm. As for this incandescent lamp, corrosion of filaments and its supporting body, or of internal conductors can be prevented. Furthermore, blackening of the tube wall is controlled and economical change of luminous flux is decreased. So, it can be last long.
COPYRIGHT: (C)1977,JPO&Japio
JP586576A 1976-01-23 1976-01-23 Incandescent lamp Pending JPS5290181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP586576A JPS5290181A (en) 1976-01-23 1976-01-23 Incandescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP586576A JPS5290181A (en) 1976-01-23 1976-01-23 Incandescent lamp

Publications (1)

Publication Number Publication Date
JPS5290181A true JPS5290181A (en) 1977-07-28

Family

ID=11622839

Family Applications (1)

Application Number Title Priority Date Filing Date
JP586576A Pending JPS5290181A (en) 1976-01-23 1976-01-23 Incandescent lamp

Country Status (1)

Country Link
JP (1) JPS5290181A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62134011U (en) * 1986-02-18 1987-08-24

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5025094A (en) * 1973-02-21 1975-03-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5025094A (en) * 1973-02-21 1975-03-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62134011U (en) * 1986-02-18 1987-08-24

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