JPS5450165A - Low-pressure vapor discharge lamp - Google Patents

Low-pressure vapor discharge lamp

Info

Publication number
JPS5450165A
JPS5450165A JP11562377A JP11562377A JPS5450165A JP S5450165 A JPS5450165 A JP S5450165A JP 11562377 A JP11562377 A JP 11562377A JP 11562377 A JP11562377 A JP 11562377A JP S5450165 A JPS5450165 A JP S5450165A
Authority
JP
Japan
Prior art keywords
blade
lamp
glass bulb
instance
inner tube
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
JP11562377A
Other languages
Japanese (ja)
Other versions
JPS6112335B2 (en
Inventor
Mikiya Yamane
Koichi Tomura
Yoshio Watanabe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11562377A priority Critical patent/JPS5450165A/en
Priority to DE7878300262T priority patent/DE2862125D1/en
Priority to EP78300262A priority patent/EP0000842B1/en
Priority to EP81102980A priority patent/EP0037589B1/en
Priority to DE8181102980T priority patent/DE2862474D1/en
Publication of JPS5450165A publication Critical patent/JPS5450165A/en
Priority to US06/158,264 priority patent/US4335331A/en
Priority to US06/383,944 priority patent/US4438373A/en
Publication of JPS6112335B2 publication Critical patent/JPS6112335B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To provide a discharge lamp, in which a blade is attached to the inner glass bulb having therein a cathode at its bottom, and anodes are disposed on both sides of said blade, whereby brightness of the lamp can be made virtually uniform over the entire surface of the same.
CONSTITUTION: Inner glass bulb 2 (for instance, 17cm long and having an inner diameter of 3cm) is disposed coaxially in outer glass bulb 1 (for instance, 20cm long and having a maximum tube diameter of 8cm), and a blade 3 (for instance, 1 cm wide and 1mm thick) of glass, substantially in the form of an inverted U-shape, is attached to the inner tube 2. Fluorescent material 4 is applied on the surfaces of the inner tube 2, outer glass bulb 1 and blade 3. Cathode filament 6 is supported by stem 5 in the inner tube 2, and rod-like anodes 7, 7' are supported by the flare portion of stem 5 such that they are located on both sides of the blade 3. Although plasma developed in the lamp when it is lighted is not uniform, discharge current is sabilized since discharge passages are fixed, and thus brightness of the lamp can be rendered unform over the entire surface of the same
COPYRIGHT: (C)1979,JPO&Japio
JP11562377A 1977-08-10 1977-09-28 Low-pressure vapor discharge lamp Granted JPS5450165A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP11562377A JPS5450165A (en) 1977-09-28 1977-09-28 Low-pressure vapor discharge lamp
DE7878300262T DE2862125D1 (en) 1977-08-10 1978-08-07 Low pressure metal vapour discharge lamp
EP78300262A EP0000842B1 (en) 1977-08-10 1978-08-07 Low pressure metal vapour discharge lamp
EP81102980A EP0037589B1 (en) 1977-08-10 1978-08-07 Low pressure metal vapour discharge lamp
DE8181102980T DE2862474D1 (en) 1977-08-10 1978-08-07 Low pressure metal vapour discharge lamp
US06/158,264 US4335331A (en) 1977-08-10 1980-06-10 Low pressure metal vapor discharge lamp
US06/383,944 US4438373A (en) 1977-08-10 1982-06-01 Low pressure metal vapor discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11562377A JPS5450165A (en) 1977-09-28 1977-09-28 Low-pressure vapor discharge lamp

Publications (2)

Publication Number Publication Date
JPS5450165A true JPS5450165A (en) 1979-04-19
JPS6112335B2 JPS6112335B2 (en) 1986-04-08

Family

ID=14667227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11562377A Granted JPS5450165A (en) 1977-08-10 1977-09-28 Low-pressure vapor discharge lamp

Country Status (1)

Country Link
JP (1) JPS5450165A (en)

Also Published As

Publication number Publication date
JPS6112335B2 (en) 1986-04-08

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