Patent Number: 8,721,125

Title: Self-ballasted lamp and lighting equipment

Abstract: The invention provides a self-ballasted lamp having high heat radiation performance, which is lightweight and inexpensive. A substrate having LED elements mounted is provided at one edge side of the radiator, and a cap is provided at the other edge side the radiator. A lighting circuit is accommodated between the radiator and the cap. The radiator includes a cylindrical cover member and an annular radiation member fitted to the outer circumferential part of the cover member and is composed by combining the cover member and the radiation member together. The cover member and the radiation member are made of metal and are formed by press-working.

Inventors: Sakai; Makoto (Yokosuka, JP), Tanaka; Toshiya (Yokosuka, JP), Shimizu; Keiichi (Yokosuka, JP), Kawano; Hitoshi (Yokosuka, JP)

Assignee: Toshiba Lighting & Technology Corporation

International Classification: F21V 29/00 (20060101); F21V 1/00 (20060101); F21V 11/00 (20060101)

Expiration Date: 5/13/12018