초록 ▼

A heat-dissipating light fixture for use with a tungsten-halogen lamp has an externally finned metal body provided with an internal cavity divided into two opposite portions by an integrally formed heat shield having a socket opening formed therethrough. An electrical connector is secured to one sid

A heat-dissipating light fixture for use with a tungsten-halogen lamp has an externally finned metal body provided with an internal cavity divided into two opposite portions by an integrally formed heat shield having a socket opening formed therethrough. An electrical connector is secured to one side of the heat shield, over the socket opening, and a graphite foil disc is secured to the other side of the heat shield, the foil disc having central tab portions which overlie the socket opening. The lamp is installed in the fixture by pressing the lamp base portion through the foil disc and the socket opening until the connecting prongs of the lamp enter prong openings in the connector. Insertion of the lamp base into the socket opening bends the foil tabs into the opening where they are compressed between the lamp base and the interior surface of the socket opening. The heat shield intercepts and absorbs infrared radiation generated by the lamp reflector toward the connector. Additionally, heat from the lamp base is conducted, via the foil tabs, to the heat shield. The heat transmitted to the heat shield is conducted outwardly therethrough to the fixture body and dissipated by the fins thereon to surrounding ambient air, thereby protecting the lamp and its connector from excessive heat build-up.

대표청구항 ▼

Lamp heat dissipating light fixture apparatus for use with a lamp having a hollow reflector, a base projecting outwardly from said reflector and having an outer end, and a bulb member extending through and supported by said base, said bulb member having a pair of electrical connector pins projecting

Lamp heat dissipating light fixture apparatus for use with a lamp having a hollow reflector, a base projecting outwardly from said reflector and having an outer end, and a bulb member extending through and supported by said base, said bulb member having a pair of electrical connector pins projecting outwardly beyond said outer end of said base, said light fixture apparatus comprising: electrical connector means for removably receiving said base and said connector pins, for transmitting electrical power from an electrical power source to said bulb member through said connector pins, and for internally and simultaneously drawing heat from said base and said connector pins, essentially entirely by conduction, and then externally dissipating the base and connector pin heat internally conductd thereto to thereby substantially increase the operational life of said lamp, said electrical connector means including: hollow, thermally conductive connector body means for internally receiving and externally dissipating heat, said connector body means having an internal cavity and an inwardly extending socket opening communicating with said internal cavity and adapted to removably receive said base, heat conducting means carried by said connector body means and positioned to be pressed into intimate contact between the interior surface of said socket opening and a peripheral exterior surface portion of said base, when said base is operatively inserted into said socket opening, to form a first highly conductive heat transfer path between said base and the interior surface of said socket opening, a spaced duality of thermally and electrically conductive pin receiving heat sink means positioned within said internal cavity for removably receiving said connector pins when said base is operatively inserted into said socket opening, and for conducting electrical energy from said source thereof to said connector pins while conductively receiving heat from said connector pins, and a thermally conductive, electrically resistive material disposed within said internal cavity, encapsulating and electrically isolating said duality of heat sink means from one another, and defining a second highly conductive heat transfer path from the exterior surface of said duality of heat sink means to the interior surface of said internal cavity, whereby, during operation of said lamp, heat generated by said base and said connector pins is simultaneously conducted to said connector body means through said first and second conductive heat paths, respectively, conducted outwardly through said connector body means, and then externally dissipated from said connector body means.