LED LAMP WITH HEAT DISSIPATION

• US 20120098429A1
• Filed: 10/22/2010
• Published: 04/26/2012
• Est. Priority Date: 10/22/2010
• Status: Abandoned Application

• Current Assignee: Ching-Long Liang
• Original Assignee: Ching-Long Liang
• Inventors: Liang, Ching-Long
• Application Number:
  US12/909,871
• Publication Number:
  US 20120098429A1
• Time in Patent Office: Days
• US Class Current: 315/70
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21V 19/0055 by screwing
• CPC Class Codes: F21V 23/023 Power supplies in a casing F21V23/003 takes precedence
• CPC Class Codes: F21V 29/713 in direct thermal and mechanical contact of each other to form a single system
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A LED lamp with heat dissipation includes a transfer adapter, a heatsink, a heat-conducting plate, a circuit board and a lampshade. The heatsink, the heat-conducting plate and the circuit board are all made of aluminum. A through hole inside the heatsink is provided therein with plural air channels communicating with the outer wall at one end of the heat-dissipating base and formed with air slots. The heatsink has its outer wall disposed with plural heat-dissipating blades having a heat-dissipating recess formed between there and has one end formed with a flange. The heat-conducting plate has one end provided with a recessed groove to be engaged with the flange of the heatsink and another end provided with an accommodating chamber with plural heat-dissipating holes respectively aligned to the air channels of the heatsink. The circuit board is provided thereon with an LED chip.

Claims

1. A LED lamp with heat dissipation comprising:

A transfer adapter having an outer wall provided with male threads, said transfer adapter having one end formed with a flange, said flange provided thereon with male threads;

a heatsink mounted on said transfer adapter, said heatsink made of aluminum, said heatsink disposed in an interior with a through hole having an inner wall provided with a plurality of air channels, said air channels communicating with an outer wall at one end of said heatsink and respectively formed with an air slot, said heatsink having another end formed with a flange and an outer wall provided with plural heat-dissipating blades, a heat-dissipating recess formed between every two of said heat-dissipating blades, said through hole of said heatsink having one end disposed with female threads to be screwed with said transfer adapter;

a heat-conducting plate engaged with said heatsink, said heat-conducting plate made of aluminum, said heat-conducting plate having one end provided with a recessed groove to be engaged with said flange of said heatsink, said heat-conducting plate having another end formed with an accommodating chamber, said accommodating chamber having an inner wall surface bored with plural insert holes, threaded holes and heat-dissipating holes, said heat-dissipating holes respectively aligned to said air channels of said heatsink, said accommodating chamber having an inner wall bored with an inert slot, a plurality of screws respectively inserted through said insert holes and firmly screwed with said heatsink;

a circuit board received in said accommodating chamber of said heat-conducting plate, said circuit board made of aluminum, said circuit board provided thereon with an LED chip, said circuit board bored with plural insert holes respectively having a screw inserted therein, said screw threadably fixed on said heat-conducting plate, said circuit board provided with electric power lines to be inserted through said insert slot of said heat-conducting plate and connected with a transformer, said transformer additionally provided with electric power lines connected to an interior of said adapter; and

a lampshade assembled on said heat-conducting plate, said lampshade being translucent.

2. The LED lamp with heat dissipation as claimed in claim 1, wherein a thickness between a bottom of said accommodating chamber of said heat-conducting plate and a bottom of said recessed groove at another end of said heat-conducting plate is equal to a distance of one of said heat-dissipating blade plus one of said heat-dissipating recess of said heatsink.

3. The LED lamp with heat dissipation as claimed in claim 1, wherein said through hole of said heatsink is provided inside with a plurality of projections respectively formed in the interior with a female threaded section for a screw to be screwed therein.

4. The LED with heat dissipation as claimed in claim 1, wherein there are at least three of said air channels provided in the interior of said heatsink and there are at least three of said heat-dissipating holes bored on said heat-conducting plate.