Matsushita Electric Works, Ltd.

Shoiti Morii

Eiji Shiohama

Atsunori Okada

Shigeaki Wada

Makoto Toho

Hiroshi Imamura

Koji Hiramatsu

A colored fluorescent display lamp assembly has a lamp housing in which a plurality of discharge chambers are defined. Discharge holes of the respective discharge chambers are disposed in a central area of a bottom wall of the housing. A lamp base, formed by a relatively thin lightweight material, carries therein an electrode common to all of the discharge chambers. The base has an open end sealed to the central area of the lamp housing bottom wall to enclose the discharge holes. The lamp assembly can be thereby minimized in weight and size.

Colored fluoroescent display lamp assembly

A high pressure discharge lamp wherein an arc tube is so formed at least at one end portion as to satisfy a predetermined condition, unlike any known configuration and dimensions of the arc tube end portion, to restrain occurrence of acoustic resonance phenomenon for reducing zones in which the phenomenon occurs at least to be below 50% and effectively preventing any adverse influence of the phenomenon on discharge arc column.

High pressure discharge lamp

Growing community of inventors

Kadoma, Japan

Shoiti Morii