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Self-ballasted lamp and lighting equipment

  • US 8,324,789 B2
  • Filed: 09/20/2010
  • Issued: 12/04/2012
  • Est. Priority Date: 09/25/2009
  • Status: Expired due to Fees
First Claim
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1. A self-ballasted lamp comprising:

  • a light-emitting module having a light-emitting portion in which a plurality of semiconductor light-emitting elements are mounted on one face of a substrate;

    a base body which has a base body portion and a plurality of heat radiating fins provided on the circumference of the base body portion and that the light-emitting module is thermally-conductively brought into contact with one end side of the base body portion;

    a globe which is provided on one end side of the base body so as to cover the light-emitting module;

    a cap provided on the other end side of the base body; and

    a lighting circuit housed between the base body and the cap, whereinthe lamp total length from the globe to the cap is 70 to 120 mm, and the area of a surface the base body which is exposed to the outside per 1 W of power charged to the light-emitting module is 20.5 to 24.4 cm2/W.

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