LED lamp having a sealed structure
First Claim
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.
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Accused Products
Abstract
An LED lamp includes a lamp holder, a heat sink, a plurality of LED modules, a cover, an envelope and a sealing cushion. The lamp holder has a connecting portion at a bottom thereof adapted for engaging with a lamp socket to fix the LED lamp in position. The heat sink is disposed on the lamp holder. The LED modules are attached to a circumference of the heat sink. The cover is coupled to a top of the heat sink. The envelope encloses the heat sink and the LED modules therein and has a lower end engaging with the lamp holder and an upper end engaging with the cover. The sealing cushion is provided between 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.
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Citations
13 Claims
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1. An LED lamp, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An LED lamp comprising:
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a heat sink having a cylinder, a plurality of connecting arms extending outwardly from the cylinder and a plurality of fins extending from each of the arms; a plurality LED modules each mounted on an outer surface of an outermost one of the plurality of fins; a lamp holder secured to a bottom of the heat sink adapted for connecting with a supporting rod for fixing the LED lamp in position, the lamp holder having an annular inner flange and an annular outer flange and a groove between the inner and outer flanges, the outer flange defining a plurality of cutouts therein adapted for facilitating flowing out of water in the groove; a waterproof cushion received in the groove; an envelope surrounding the heat sink and the LED modules, having a bottom end fitted into the groove; a cover mounted to top ends of the heat sink and the envelope, wherein the cover is thermally connected with the heat sink and heat absorbed by the heat sink from the LED modules is dissipated to surrounding air of the LED lamp through the cover.
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Specification