Discharge device and plasma gas generating apparatus employing same

An apparatus for producing plasma gas through the use of discharge phenomenon, comprising;

• means for generating a predetermined electric voltage high enough to cause discharge phenomenon;
• a discharge device for generating the discharge phenomenon, the discharge device having at least one bulb containing at least one dish-shaped electrode therein, and at least one plate electrode having at least one hole through which the bulb is inserted in a coplanar relationship with respect to the dish-shaped electrode;
• and
• means for distributing the voltage to each of the bulbs of the discharge device.

A bulb for use in a discharge device for generating discharge between electrodes by applying a predetermined high voltage therebetween, comprising:

• means for defining an airtightly maintained inner space;
• conductive means for transmitting electric voltage supplied from the outside;
• and
• at least one dish-shaped electrode enclosed by the inner space defining means and connected to the conductive means for enabling discharge phenomenon to occur between the dish-shaped electrode and an outside electrode which is located outside the bulb.