Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Reexamination Certificate
2000-01-13
2001-07-31
Philogene, Haissa (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
C315S312000, C315S294000, C315S362000
Reexamination Certificate
active
06268703
ABSTRACT:
TECHNICAL FIELD
The present invention relates a gas discharge lamp, more particularly, relates to the improvement of its structure.
BACKGROUND
At present, it is a common view that using a gas discharge lamp can save energy in a large area raise the luminous efficiency. Generally, the gas discharge lamps mean the fluorescent lamps, the high-pressure sodium lamps, the mercury lamps, the neon lamps, the metal halite lamps and the xenon lamps etc. For the convenience in the application of the gas discharge lamps, those skilled in the art strive to make the special power sources of the gas discharge lamps more precise and smaller in the size, so that it can be entered the lamp bases or the tube holders directly. Thereby, it is convenient for the application. There are some problems followed, however, in the conventional technology. For example, it is difficult to be reduced in their volume since the gas discharge lamp having a plurality of special power devices, the cost of the lamp base or the lamp holder is higher than the lamp. When a plurality of the gas discharge lamps are used in the same power supply line in a building, it is possible that it generates the third harmonics in the power sources of the lamps. As a result, a number of lamps will respond to the third harmonics, thereby causing a clear reaction in a large area so that the lamps instantaneous damage at the same time.
SUMMARY OF THE INVENTION
An object of the invention is to provide a gas discharge lamp having a plurality of discharge lamp bases (i.e., lamp holders), which can be driven by a single power source. So long as the single power source being controlled and adjusted, the luminous efficiency of the lamps can be improved and the energy cost can be saved in a large area. Thus, there is not required to install a special power source on each discharge lamp base (tube holder). While the luminous efficiency of the discharge lamp is improved at a large scale, the lamp production cost is remarkably reduced, and the life of the discharge lamp is also improved.
The present invention is implemented so that a gas discharge lamp having a controlled power source and a lamp base (i.e., tube holder), a rectifier circuit
4
, a switching circuit
5
and a sampling control circuit
6
of the controlled power source form an power source
1
, and an output circuit
7
of the controlled source is connected to more than one serially connected lamps to form the lamp base
2
.
The above objectives and advantages of the present invention will become more apparent by describing in detail a preferred embodiment thereof with reference to the attached drawings in which:
REFERENCES:
patent: 5491388 (1996-02-01), Nobuyuki et al.
patent: 5677601 (1997-10-01), Zuchtriegel
patent: 5838116 (1998-11-01), Katyl et al.
Kong Xiangong
Zhang Suier
Philogene Haissa
Westman Champlin & Kelly P.A.
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