Heat sink for led bulbs

Abstract

A heat sink for LED bulbs includes a base having male threads engaged with a socket connected to a power and female threads engaged with male threads of a base connector. The base connector has a chamber co-working with a chamber of a lamp casing to accommodate a controller, and locking projections to fix the lamp casing. The lamp casing is formed as a trumpet, having plural positioning projections and an outer surface coated with a heat dispersing paint to scatter heat created by LED bulbs. A heat conducting plate is placed in a top circumference of the lamp casing, interlocked with the positioning projections. A circuit board has a positioning hole locked upward by a bar of the heat conducting plate, with LED bulbs laid on the circuit board. A bulb hood is capped on the lamp casing.

1 . A heat sink for LED bulbs, said heat sink at least comprising:
 a base provided with male threads employed to engage with a socket and female threads used to engage with male threads of a base connector;   said base connector provided with a chamber co-working with a chamber of a lamp casing to accommodate a power module, said base connector further having plural locking projections to interlock with said lamp casing;   said lamp casing provided with plural positioning projections to fix a heat conducting plate and having an outer surface or an inner surface or both coated with a heat dispersing paint to scatter heat produced by LED bulbs;   said heat conducting plate installed in said lamp casing and provided with an upward extended circumferential wall utilized to lock with said positioning projections of the lamp casing and contact with said inner wall of said lamp casing so that said heat conducting plate can be stably combined with said lamp casing, a circuit board being fixed on said heat conducting plate to accommodate LED bulbs; and   a bulb hood being capped on said lamp casing and combined together with said lamp casing by a glue.   
     
     
         2 . The heat sink for LED bulbs as claimed in  claim 1 , wherein said chamber of said base connector possesses an upper circumferential wall co-working with said chamber of said lamp casing to install a power module. 
     
     
         3 . The heat sink for LED bulbs as claimed in  claim 1 , wherein said locking projections are built on an extending circumferential wall of said base connector. 
     
     
         4 . The heat sink for LED bulbs as claimed in  claim 1 , wherein said base connector is provided with an outer circumferential wall to combine with a bottom circumference of said lamp casing. 
     
     
         5 . The heat sink for LED bulbs as claimed in  claim 1 , wherein, with an inner engaging circumferential wall of said lamp casing interlocked with said locking projections of said base connector, and with said bottom circumference of said lamp casing resting on said outer circumferential wall of said base connector, said lamp casing is stably combined with said base connector. 
     
     
         6 . The heat sink for LED bulbs as claimed in  claim 1 , wherein, with an outer curved surface of said upward extended circumferential wall of said heat conducting plate totally attached with an inner curved surface of said lamp casing, said heat conducting plate is stably confined in said lamp casing, and therefore the position of said heat conductive plate is restricted. 
     
     
         7 . The heat sink for LED bulbs as claimed in  claim 6 , wherein, with said heat conducting plate inserted downward from an opening of said lamp casing to contact with said inner curved surface of said lamp casing and with said positioning projections of said lamp casing interlocked with said upward extended circumferential wall of said heat conducting plate, said heat conducting plate is further combined with said lamp casing. 
     
     
         8 . The heat sink for LED bulbs as claimed in  claim 1 , wherein said power module is installed in said chamber of said lamp casing to rest on said upper circumferential wall of said base connector, so that said power module is fixed tightly in said chamber of said lamp casing and said chamber of said base connector. 
     
     
         9 . The heat sink for LED bulbs as claimed in  claim 1 , wherein said lamp casing is formed airtight. 
     
     
         10 . The heat sink for LED bulbs as claimed in  claim 1 , wherein said lamp casing is formed with plural heat scattering holes. 
     
     
         11 . The heat sink for LED bulbs as claimed in  claim 1 , wherein said bulb hood is fastened together with said lamp casing by a glue coated between an inward circumferential wall and a downward circumferential wall of said bulb hood and an inner wall of said lamp casing. 
     
     
         12 . The heat sink for LED bulbs as claimed in  claim 1 , wherein said heat conducting plate and said circuit board are integrally made as a whole one, with said heat conducting plate made of insulation materials to install LED bulbs. 
     
     
         13 . A heat sink for LED bulbs, said heat sink at least comprising:
 a base provided with male threads employed to engage with a socket and female threads used to engage with male threads of a base connector;   said base connector provided with a chamber co-working with a chamber of a lamp casing to accommodate a power module, said base connector further having plural locking projections to interlock with said lamp casing;   said lamp casing provided with a supporting circumferential wall to bolster a heat conducting plate and having an outer surface or an inner surface or both coated with a heat dispersing paint to scatter heat produced by LED bulbs;   said heat conducting plate installed on said supporting circumferential wall of said lamp casing and having a top combined with a circuit board to accommodate LED bulbs; and   a bulb hood being capped on said lamp casing and combined together with said lamp casing by a glue.   
     
     
         14 . The heat sink for LED bulbs as claimed in  claim 12 , wherein said chamber of said base connector possesses an upper circumferential wall co-working with said chamber of said lamp casing to install a power module. 
     
     
         15 . The heat sink for LED bulbs as claimed in  claim 13 , wherein said locking projections are built on an extending circumferential wall of said base connector. 
     
     
         16 . The heat sink for LED bulbs as claimed in  claim 13 , wherein said base connector is provided with an outer circumferential wall to combine with a bottom circumference of said lamp casing. 
     
     
         17 . The heat sink for LED bulbs as claimed in  claim 13 , wherein, with an inner engaging circumferential wall of said lamp casing interlocked with said locking projections of said base connector and with said bottom circumference of said lamp casing resting on said outer circumferential wall of said base connector, said lamp casing is stably combined with said base connector. 
     
     
         18 . The heat sink for LED bulbs as claimed in  claim 13 , wherein said heat conducting plate is laid on said supporting circumferential wall of said lamp casing. 
     
     
         19 . The heat sink for LED bulbs as claimed in  claim 13 , wherein said bulb hood is fixed with said lamp casing by locking a combining circumferential wall of said lamp casing with a hook extended outward from a downward circumferential wall of said bulb hood. 
     
     
         20 . The heat sink for LED bulbs as claimed in  claim 13 , wherein said power module is installed in said chamber of said lamp casing to rest on said upper circumferential wall of said base connector, so that said power module is fixed in said chamber of said lamp casing and said chamber of said base connector. 
     
     
         21 . The heat sink for LED bulbs as claimed in  claim 13 , wherein said lamp casing is formed airtight . . . 
     
     
         22 . The heat sink for LED bulbs as claimed in  claim 13 , wherein said lamp casing is formed with plural heat scattering holes. 
     
     
         23 . The heat sink for LED bulbs as claimed in  claim 13 , wherein said bulb hood is fastened together with said lamp casing by a glue coated between an inward circumferential wall and a downward circumferential wall of said bulb hood and an inner wall of said lamp casing. 
     
     
         24 . The heat sink for LED bulbs as claimed in  claim 13 , wherein said heat conducting plate and said circuit board are integrally made as a whole one, with said heat conducting plate made of insulation materials to install LED diodes.