Panasonic Corporation

Rie Tonomori

Shunsuke Kakisaka

Masanori Higashi

Kazuo Takeda

An object of the present invention is to provide an illumination apparatus which includes an illumination fixture having an open-type reflector and a metal halide lamp, and can suppress a decrease in intensity and occurrence of glare. The illumination apparatus includes a metal halide lamp and an illumination fixture. The metal halide lamp includes an arc tube which has therein a pair of electrodes, an inner tube which houses the arc tube and has a pinch seal part at one end, and an outer tube which houses the inner tube and has a base at one end. The illumination fixture includes a reflector having a concave reflecting surface, a socket, and an attachment. In the inner tube, a diffusing part which diffuses light emitted from the arc tube is formed in an area closer to a lower end of the inner tube than a center between the pair of electrodes.

Illumination apparatus and metal vapor discharge lamp

With regard to a metal vapor discharge lamp with a triple tube structure including a discharge tube, an inner tube, and an outer tube, misalignment of axes of the inner tube and the outer tube is prevented. The metal vapor discharge lamp () is composed of a discharge tube () having a pair of electrodes therein, an inner tube () having a pinch-sealed part () at an end thereof and hermitically housing the discharge tube therein, and an outer tube () housing the inner tube therein, and a base (). In a clearance between the inner tube and the outer tube, there disposed a restrain member () for restraining movement of the inner tube relative to the outer tube in a direction orthogonal to an axis of the metal vapor discharge lamp.

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Nara, Japan

Rie Tonomori