Fluorescent lamp

Details Fluorescent lamp Fluorescent lamp

1997-09-12

1999-03-23

Patel, Ashok

Electric lamp and discharge devices

With gas or vapor

Having electrode exterior to envelope

313234, 313594, 313493, H01J 6135

Patent

active

058864687

ABSTRACT:
In the fluorescent lamp of the present invention, a fluorescent layer and a reflection layer are formed on an inner surface of a tubular glass bulb such that the reflection layer is formed between the glass bulb and the fluorescent layer, and the open angle of opening portions formed in the fluorescent layer and the refection layer is made smaller than that formed in the external electrode. Thereby, reflection efficiency is improved, thereby making it possible to increase the amount of light with the same power consumption. Since the independent reflection layer is formed and the external electrode does not need to serve as a reflector, flexibility is given to the setting of the area of the external electrode, whereby power consumption is set freely.

REFERENCES:
patent: 4871941 (1989-10-01), Dobashi et al.
patent: 5030894 (1991-07-01), Yoshiike et al.
patent: 5256935 (1993-10-01), Dobashi et al.
patent: 5514932 (1996-05-01), Willibrodus et al.

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