Dual LED point-source assembly

Abstract

A lighting device having a dual LED point-source assembly containing two high flux LEDs mounted facing each other with LED lenses positioned between the LEDs. At least one heat sink is attached to one of the LEDs. The heat sinks serve to transfer heat from the LEDs to the outside environment. In one embodiment the lighting device is positioned within a fresnel lens to produce a horizontally uniform distribution of light.

1 . A lighting device comprising: 
 (a) a stacked pair of LED modules, each LED module comprising an LED attached: to a thermally conductive mount on a first side and to an LED lens on a second opposed side, wherein the LED lens attached to one LED abuts the LED lens attached to the other LED;    (b) a power source for providing electrical power to the stacked pair of LED modules; and    (c) a hollow, approximately cylindrical member positioned around the stacked pair of LED modules.    
   
   
       2 . The lighting device of  claim 1  having a plurality of stacked pairs of LED modules.  
   
   
       3 . The lighting device of  claim 1 , wherein the LEDs have a driving current of about 1-5 Watts.  
   
   
       4 . The lighting device of  claim 1 , wherein the LEDs are secured to the thermally conductive mounts using a thermally conductive adhesive.  
   
   
       5 . The lighting device of  claim 1 , wherein the LED lens is constructed of an optically transparent material.  
   
   
       6 . The lighting device of  claim 1 , wherein the LED lens is a trapezoidal shape having one parallel side of one LED module abutting a parallel side of the LED lens of the other LED module.  
   
   
       7 . The lighting device of  claim 1 , wherein the hollow member is made of glass.  
   
   
       8 . The lighting device of  claim 1 , wherein the cylindrical member diffuses the light emitted from the LEDs.  
   
   
       9 . The lighting device of  claim 1 , wherein the cylindrical member is made of an optically transparent, heat resistant material.  
   
   
       10 . The lighting device of  claim 1 , wherein the thermally conductive mount is in contact with the air outside the lighting device.  
   
   
       11 . The lighting device of  claim 1 , further comprising a fresnel lens surrounding the stacked pair of LED modules.  
   
   
       12 . The lighting device of claim  1 . 1 , wherein the stacked pair of LED modules is aligned with the bull's eye of the fresnel lens.  
   
   
       13 . The lighting device of  claim 1 , wherein the lighting device further comprises a power controller for regulating the polarity, voltage, and current limits of the electricity going to the LEDs.  
   
   
       14 . The lighting device of  claim 1 , further comprising a threaded light socket base.  
   
   
       15 . The lighting device of  claim 1 , further comprising a heat sink in thermal communication with at least one thermally conductive mount.  
   
   
       16 . The lighting device of  claim 15 , wherein the heat sink is in thermal communication with outside air.  
   
   
       17 . The lighting device of  claim 1 , further comprising a curved optical lens disposed about the vertical axis surrounding the hollow member, wherein the lens converges beams of light emanating from the hollow member in all horizontal directions.  
   
   
       18 . The lighting device of  claim 1 , further comprising a light socket base electrically connected to the LEDs.  
   
   
       19 . The lighting device of  claim 1  designed to fit within a fresnel lens of a navigational light.  
   
   
       20 . The lighting device of  claim 1 , further comprising an air circulation means for removing heat generated by the stacked pair of LED modules.  
   
   
       21 . A lighting device comprising: 
 (a) a stacked pair of LED modules, each module comprising an LED attached to a thermally conductive mount on a first side and to an LED lens on a second opposed side, wherein the LED lens attached to one LED abuts the. LED lens attached to the other LED;    (b) a power source for providing electrical power to the stacked pair of LED modules; and    (c) a fresnel lens enclosing the stacked pair of LED modules.    
   
   
       22 . The lighting device of  claim 21  having a plurality of stacked pairs of LED modules.  
   
   
       23 . The lighting device of  claim 21 , wherein the LEDs have a driving current of about 1-5 Watts.  
   
   
       24 . The lighting device of  claim 21 , wherein the thermally conductive mount is in contact with the air outside the lighting device.  
   
   
       25 . The lighting device of  claim 21 , wherein the stacked pair of LED modules is aligned with the bull's eye of the fresnel lens.  
   
   
       26 . The lighting device of  claim 21 , wherein the lighting device further comprises a power controller for regulating the polarity, voltage, and current limits of the electricity going to the LEDs.  
   
   
       27 . The lighting device of  claim 21 , further comprising a heat sink in thermal communication with at least one thermally conductive mount.  
   
   
       28 . The lighting device of  claim 27 , wherein the heat sink is in thermal communication with outside air.  
   
   
       29 . The lighting device of  claim 1 , further comprising a hollow, cylindrical member positioned between the stacked pair of LED modules and the fresnel lens.  
   
   
       30 . A lighting device including a stacked pair of LED modules, wherein each LED module comprises: 
 an LED having a driving current of at least one Watt,    a thermally conductive mount having a first side of the LED mounted on one side of the mount, and    a trapezoidal LED lens mounted on a second side of the LED, wherein the LED lens attached to the LED of one LED module adjoins the LED lens mounted to the other LED.    
   
   
       31 . The lighting device of  claim 30  having a plurality of stacked pairs of LED modules.  
   
   
       32 . The lighting device of  claim 30 , wherein the LED lens is constructed of an optically transparent material.  
   
   
       33 . The lighting device of  claim 30 , wherein each LED lens of the stacked pair of LED modules has a parallel side abutting the parallel side of another LED lens of the stacked pair of LED modules.  
   
   
       34 . The lighting device of  claim 30 , further comprising a power source for providing electrical power to the stacked pair of LED modules.  
   
   
       35 . The lighting device of  claim 34 , wherein the power source provides electrical power to each LED module.  
   
   
       36 . The lighting device of  claim 34 , wherein the lighting device further comprises a power controller for regulating the polarity, voltage, and current limits of the electricity going to the LEDs.  
   
   
       37 . The lighting device of  claim 30 , further comprising a hollow, approximately cylindrical member positioned around the stacked pair of LED modules.  
   
   
       38 . The lighting device of  claim 30 , wherein the hollow member is made of an optically transparent,-heat resistant material.  
   
   
       39 . The lighting device of  claim 30 , wherein the thermally conductive mount is in contact with the air outside the lighting device.  
   
   
       40 . The lighting device of  claim 30 , further comprising a fresnel lens surrounding the stacked pair of LED modules.  
   
   
       41 . The lighting device of  claim 40 , wherein the stacked pair of LED modules is aligned with the bull's eye of the fresnel lens.  
   
   
       42 . The lighting device of  claim 30 , further comprising a threaded light socket base.  
   
   
       43 . The lighting device of  claim 30 , further comprising a heat sink in thermal communication with at least one thermally conductive mount.  
   
   
       44 . The lighting device of  claim 43 , wherein the heat sink is in thermal communication with outside air.  
   
   
       45 . The lighting device of  claim 30 , further comprising a light socket base electrically connected to the LEDs.  
   
   
       46 . The lighting device of  claim 30 , further comprising an air circulation means for removing heat generated by the stacked pair of LED modules.