Fluorescent lamp with coil shaped internal electrode

Details Fluorescent lamp with coil shaped internal electrode Fluorescent lamp with coil shaped internal electrode

1997-09-12

1999-12-07

Day, Michael

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313488, 313607, 313234, H01J 130, H01J 188, H01J 1924, H01J 1942

Patent

active

059989211

ABSTRACT:
A fluorescent lamp includes a tubular glass bulb, an internal electrode provided substantially along the central axis of the tubular glass bulb, a fluorescent layer provided on the inner surface of the tubular glass bulb, and an external electrode provided on the outer surface of the tubular glass bulb, wherein the internal electrode, having a coiled shape, is laid in the tubular glass bulb with an appropriate tension. According to the present invention, it is possible to prevent a sag in the internal electrode from occurring due to a difference in coefficient of thermal expansion between the tubular glass bulb and a metallic member forming the internal electrode, and to prevent either the tubular glass bulb or the internal electrode from being broken because of an excessive stress, thereby overcoming the problem concerning such type of fluorescent lamp.

REFERENCES:
patent: 5013959 (1991-05-01), Kogelschatz
patent: 5604410 (1997-02-01), Vollkommer et al.

Affiliated with

Also associated with

Rating

Fluorescent lamp with coil shaped internal electrode does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluorescent lamp with coil shaped internal electrode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluorescent lamp with coil shaped internal electrode will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-827705