Lamp with heat sink and active cooling device

Abstract

A lamp comprising a light source comprising at least one solid state emitter. The lamp comprises a heat sink body in thermal communication with said light source. At least one air flow nozzle is present in the lamp to direct air flow across at least a portion of the heat sink body. The lamp further comprises an active cooling device, in which the active cooling device is in fluid communication with the at least one air flow nozzle and is configured to provide a flow of air to the at least one air flow nozzle. The lamp further comprises driver electronics configured to provide power to each of the light source and the active cooling device, wherein the driver electronics are remote from the active cooling device.

What is claimed is: 
     
         1 .- 23 . (canceled) 
     
     
         24 . A lamp comprising:
 a light source comprising at least one solid state emitter;   a heat sink body in thermal communication with the light source;   at least one air flow nozzle to direct air flow across at least a portion of the heat sink body;   an active cooling device, wherein the active cooling device is in fluid communication with the at least one air flow nozzle and is configured to provide a flow of air to the at least one air flow nozzle; and   driver electronics configured to provide power to each of the light source and the active cooling device, and remote from the active cooling device;   wherein the lamp is configured to operate on a power level greater than 15 W of input power and possesses sufficient cooling ability for an efficiency of at least 60 LPW when the lamp is in operation.   
     
     
         25 . The lamp in accordance with  claim 24 , wherein the lamp further comprises one or more optical element for distributing light, wherein the one or more optical element is configured to provide a substantially uniform omnidirectional light distribution from the lamp when the lamp is in operation. 
     
     
         26 . The lamp in accordance with  claim 24 , wherein the lamp comprises a geometric configuration which substantially conforms to the ANSI A19 volumetric profile. 
     
     
         27 . The lamp in accordance with  claim 24 , wherein the heat sink body comprises a cavity, and the active cooling device is disposed at least partially within the cavity, and wherein the driver electronics are not disposed at least partially within the cavity. 
     
     
         28 . The lamp in accordance with  claim 24 , wherein the at least one air flow nozzle is formed as an aperture in, or is integral to, the heat sink body. 
     
     
         29 . The lamp in accordance with  claim 24 , wherein the heat sink body further comprises a plurality of fins, wherein the plurality of fins comprise a first set of fins of a relatively greater axial length and a second set of fins of a relatively lesser axial length. 
     
     
         30 . The lamp in accordance with  claim 29 , wherein at least the second set of fins do not block light emitted from the lamp, or are in the shadow of the lamp. 
     
     
         31 . The lamp in accordance with  claim 24 , wherein the at least one air flow nozzle comprises an air flow divider internal to the nozzle. 
     
     
         32 . The lamp in accordance with  claim 31 , wherein the air flow divider comprises a blade edge. 
     
     
         33 . The lamp in accordance with  claim 24 , wherein a flow of air to the at least one nozzle is caused to turn at an angle of 90° or greater, and wherein the flow of air which is caused to turn traverses a rounded surface. 
     
     
         34 . The lamp in accordance with  claim 24 , wherein air flow from the at least one nozzle, when the lamp is in operation, is characterized by a value for Re(d) of about 50 to about 800. 
     
     
         35 . The lamp in accordance with  claim 24 , wherein the heat sink comprises a plurality of fins, wherein the at least one air flow nozzle is proximate to a selected fin, and wherein, when the lamp is in operation, the air flow along the selected fin is characterized by a value for Re(FL) of about 500 to about 13000. 
     
     
         36 . The lamp in accordance with  claim 24 , wherein the lamp possesses sufficient cooling ability for an efficiency of at least 60 LPW when in operation. 
     
     
         37 . A lamp comprising:
 a light source comprising at least one solid state emitter;   a heat sink body in thermal communication with the light source, the heat sink body further comprising a plurality of fins, wherein a majority of the plurality of fins are in a shadow area of the lamp;   at least one air flow nozzle to direct air flow across at least a portion of the heat sink body;   an active cooling device, wherein the active cooling device is in fluid communication with the at least one air flow nozzle and is configured to provide a flow of air to the at least one air flow nozzle; and   driver electronics configured to provide power to each of the light source and the active cooling device, and the driver electronics are in a driver housing separate from the active cooling device.   
     
     
         38 . The lamp in accordance with  claim 24 , further comprising:
 a housing, wherein a surface of the housing and a surface of the heat sink body form the at least one air flow nozzle.   
     
     
         39 . The lamp in accordance with  claim 38 , wherein a boundary of the at least one nozzle is defined by both a surface of the housing and a surface of a heat sink. 
     
     
         40 . A lamp comprising:
 a light source comprising at least one solid state emitter;   a heat sink body in thermal communication with the light source, the heat sink body further comprising at least one fin having two lateral sides;   at least one air flow nozzle to direct air flow across at least a portion of the heat sink body;   an active cooling device, wherein the active cooling device is in fluid communication with the at least one air flow nozzle, and the active cooling device is configured to provide a flow of air to the at least one air flow nozzle; wherein air is axially directed adjacent both lateral sides of the at least one fin; and   driver electronics configured to provide power to each of the light source and the active cooling device, and remote from the active cooling device;   wherein at least two air flow nozzles are positioned adjacent an end of the at least one fin to direct air in an axial direction adjacent both lateral sides of the at least one fin.