JPS5450166A - Low-pressure vapor discharge lamp - Google Patents
Low-pressure vapor discharge lampInfo
- Publication number
- JPS5450166A JPS5450166A JP11562477A JP11562477A JPS5450166A JP S5450166 A JPS5450166 A JP S5450166A JP 11562477 A JP11562477 A JP 11562477A JP 11562477 A JP11562477 A JP 11562477A JP S5450166 A JPS5450166 A JP S5450166A
- Authority
- JP
- Japan
- Prior art keywords
- instance
- anodes
- stem
- glass
- filled
- 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
Links
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
PURPOSE: To provide a low-pressure vapor discharge lamp, in which solid filler material is filled tightly and roughly in the discharge space defined between an inner glass tube and an outer glass bulb, such that discharge current be passed through the portion of the discharge space where the solid filler material is filled roughly, whereby it is enabled to stabilize the condition of electric discharge.
CONSTITUTION: Inner glass tube (for instance, 17cm long and having an inner diameter of 3cm) 2 is disposed coaxially in outer glass bulb (for instance, 20cm long and having a maximum diameter of 8cm) 1, and they are connected and fixed at the portion of stem 4. Fluorescent material 3 is coated on the surface of these inner and outer bulbs 2, 1. Cathode 5 of filament is supported by the stem 4, whereas a plurality of (two) anodes 6, 6' are disposed on the outside of inner tube 2 and supported by the flare of stem 4. Glass wool 7 is filled in the discharge space dieined between the outer bulb 1 and inner tube 2, such that density of the glass wool is relatively low (for instance, 10-6W10-4 at the volume ratio) at the upper portion of anodes 6, 6', whereas the density is relatively high (for instance, 10-4W10-3 at the volume ratio) at portions spaced circumferentially 90 degrees from the positions of the anodes 6, 6', as shown in the drawing
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11562477A JPS5450166A (en) | 1977-09-28 | 1977-09-28 | Low-pressure vapor discharge lamp |
DE8181102980T DE2862474D1 (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 |
DE7878300262T DE2862125D1 (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 |
---|---|---|---|
JP11562477A JPS5450166A (en) | 1977-09-28 | 1977-09-28 | Low-pressure vapor discharge lamp |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5450166A true JPS5450166A (en) | 1979-04-19 |
JPS6112336B2 JPS6112336B2 (en) | 1986-04-08 |
Family
ID=14667251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11562477A Granted JPS5450166A (en) | 1977-08-10 | 1977-09-28 | Low-pressure vapor discharge lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5450166A (en) |
-
1977
- 1977-09-28 JP JP11562477A patent/JPS5450166A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6112336B2 (en) | 1986-04-08 |
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