LOW PRESSURE MERCURY VAPOR DISCHARGE LAMP AND PREPARATION THEREOF

摘要

Both legs of a U-shaped bulb are brought into a mutually contacting state or are opposed to each other with a space of gap and end parts of the legs are directly put on an end plate so as to form an electric discharge path in the U-shaped bulb. Since the legs are in contact with each other within limit of elastic deformation of a connecting part of the bulb, breakage of the bulb is avoidable even when an external force is applied to the bulb so as to bring the legs closer. The bulb of the present invention can be compact and easily fabricated.