LED lamp device and method to retrofit a lighting fixture

A method for retrofitting an existing lamp fixture to replace a threaded lamp socket with an LED-based lamp assembly, the lamp fixture having a collar having an annular wall with an inner wall surface, and a base to which the threaded lamp socket is secured for attaching the lamp fixture to a structure, and for communicating electrical power from an electrical power source to the threaded socket lamp, the method comprising the steps of:

• a. removing the threaded lamp socket from the collar;
• b. providing an LED lamp device having an annular wall having a shaped outside annular surface and an LED module, wherein the outside surface of the annular wall has a first surface portion that is substantially cylindrical about a centerline of the device, and a second surface portion that has at least one frustoconical surface that tapers toward the centerline;
• c. affixing the LED lamp device to the lamp fixture, wherein the first portion and the second portion are placed inside the collar and at least a portion of the shaped outside annular surface is placed into direct surface contact with the inner surface of the annular wall of the collar, to establish a heat-transferring interface between the annular wall of the lamp device and the collar, and
• d. connecting the electrical power source to the LED module.

A method for retrofitting an existing lamp fixture to replace a threaded lamp socket with an LED-based lamp assembly, the lamp fixture having a collar having an annular wall with an inner wall surface, and a base to which the threaded lamp socket is secured for attaching the lamp fixture to a structure, and for communicating electrical power from an electrical power source to the threaded socket lamp, the method comprising the steps of:

• a. removing the threaded lamp socket from the collar;
• b. providing an LED lamp device having an annular wall having a shaped outside annular surface and an LED module, the LED lamp device comprises a neck base having the shaped outside surface, and a lamp head moveably affixed to the distal end of the neck base, having formed therein the first recess to receive the LED module;
• c. affixing the LED lamp device to the lamp fixture, wherein the shaped outside annular surface is placed into direct surface contact with the inner surface of the annular wall of the collar, to establish a heat-transferring interface between the annular wall of the lamp device and the collar, and
• d. connecting the electrical power source to the LED module.

A lamp fixture securable to a structure having an electrical power source, comprising:

• 1) a collar having an annular wall and a base securable to the structure;
• 2) a shade having a frustum extending from a distal end of the collar, where the shade is at least partially in contact with freely-flowable air for increased heat dissipation;
• 3) a replaceable lamp device comprising a neck base having an annular wall having a shaped outside surface that is placed into direct surface contact with an inner surface of the annular wall of the collar, to establish a heat-transferring interface between the lamp device and the collar to dissipate heat through the shade, and having a distal end;
• and
• 4) a light module comprising at least one light source disposed at the distal end of the lamp device;
• wherein the lamp device further has a first recessed level formed into the distal end to receive the light module and the first recessed level has an elongated slot having a length and a width sufficiently sized to allow passing therethrough the light module, and having at least one secondary slot extending transversely from a middle portion along the length of the elongated slot.

A lamp fixture securable to a structure having an electrical power source, comprising:

• a collar having an annular wall and a base securable to the structure;
• a lamp device comprising a neck base having an annular wall having a shaped outside surface that is placed into direct surface contact with an inner surface of the annular wall of the collar, to establish a heat-transferring interface between the lamp device and the collar, and having a distal end;
• a light module comprising at least one light source disposed at the distal end of the lamp device;
• and
• wherein the lamp device further comprises a power unit connected to the electrical power source and a control unit for the light module, where the power unit and control unit are in sufficient thermal communication with the direct surface contact to transfer heat generated in the power unit and control unit;
• wherein the lamp device further has a first recessed level formed into the distal end to receive the light module and the first recessed level has an elongated slot having a length and a width sufficiently sized to allow passing therethrough the light module, and having at least one secondary slot extending transversely from a middle portion along the length of the elongated slot.