Patent ID: 7744251
Filing Date: 2010-06-29
Classification: F21K,F21V,F21Y

Abstract:
1. An LED lamp, comprising: a lamp holder having a connecting portion at a bottom thereof, adapted for engaging with a supporting rod to fix the LED lamp in position; a heat sink disposed on the lamp holder; a plurality of LED modules attached to a circumference of the heat sink; a cover coupled to a top of the heat sink, in which heat absorbed by the heat sink from the LED modules is transferred to the cover to be dissipated to surrounding air; an envelope enclosing the heat sink and the LED modules therein and having a lower end engaging with the lamp holder and an upper end engaging with the cover; and at least a sealing cushion provided in at least one of the combinations of the lamp holder and the envelope, and of the cover and the envelope to prevent an entry of foreign matter into the LED lamp; wherein the heat sink comprises a cylinder, a plurality of conducting arms extending outwardly from an outer sidewall of the cylinder, and a plurality of first fins are formed on two opposite lateral sides of each of the conducting arms.