LED lamp

• US 7,758,214 B2
• Filed: 07/12/2007
• Issued: 07/20/2010
• Est. Priority Date: 07/12/2007
• Status: Expired due to Fees

• Current Assignee: Foxconn Technology Co., Ltd., Fuzhun Precision Industry Company Limited (Foxconn Technology Co., Ltd.)
• Original Assignee: Foxconn Technology Co., Ltd., Fuzhun Precision Industry Company Limited (Foxconn Technology Co., Ltd.)
• Inventors: Lee, Tsung-Lung, Xiao, Xu-Hua, He, Li
• Primary Examiner(s): O'Shea; Sandra L
• Assistant Examiner(s): Gramling; Sean P
• Application Number:
  US11/777,013
• Publication Number:
  US 20090016062A1
• Time in Patent Office: 1,104 Days
• Field of Search: 362/373, 362/294
• US Class Current: 362/294
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 29/71 using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
• CPC Class Codes: F21V 29/717 using split or remote units thermally interconnected, e.g. by thermally conductive bars or heat pipes
• CPC Class Codes: F21V 29/777 the planes containing the fins or blades having directions perpendicular to the light emitting axis
• CPC Class Codes: F21Y 2107/30 on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

An LED lamp includes a heat dissipation apparatus, an LED module, a bulb and a reflector. The heat dissipation apparatus includes a first heat sink, a second heat sink and a heat conductor positioned between the first heat sink and the second heat sink. The LED module includes a plurality of LEDs mounted on the heat conductor. The bulb is seated on the first heat sink and the reflector is seated on the second heat sink. The reflector and the bulb together form a housing for receiving the LED module and the heat conductor therein. Heat pipes are used to thermally connect the heat conductor and the first and second heat sinks.

Claims

1. An LED lamp comprising:

a heat dissipation apparatus comprising a first heat sink, a second heat sink, and a heat conductor positioned between the first heat sink and the second heat sink;

an LED module comprising a plurality of LEDs mounted on the heat conductor;

a bulb seated on the first heat sink; and

a reflector seated on the second heat sink and fitted over the bulb, the reflector and the bulb together forming a housing for receiving the LED module and the heat conductor therein, wherein light emitted from the LED module is reflected by the reflector downwardly and passes through the bulb;

wherein the heat dissipation apparatus further comprises a plurality of first heat pipes thermally engaging with the heat conductor and the first heat sink;

wherein the heat dissipation apparatus further comprises a plurality of second heat pipes thermally engaging with the heat conductor and the second heat sink;

wherein the first heat sink comprises a base and a plurality of fins mounted on the base, the first heat pipes partly attached to the base of first heat sink, and the second heat sink comprises a base and a plurality of fins mounted on the base of the second heat sink, the second heat pipes being partly attached to the base of the second heat sink;

wherein the base of the first heat sink has an end portion extending beyond the fins of the first heat sink, the end portion of the first heat sink extending through the bulb; and

wherein the base of the second heat sink has an end portion extending beyond the fins of the second heat sink, the end portion of the second heat sink extending through the reflector.