Abstract:
An illumination device (b 1 - 01 ) is provided which comprises a housing (b 1 - 03 ) equipped with an aperture (b 1 - 37 ), first (b 1 - 33 ) and second (b 1 - 35 ) diaphragms disposed in said housing and in fluidic communication with said aperture, and an LED (b 1 - 15 ) disposed between said first and second diaphragms.

Description:
FIELD OF THE DISCLOSURE 
       [0001]    The present disclosure relates generally to the thermal management of LED illumination devices, and more particularly to the thermal management of LED illumination devices with synthetic jet ejectors. 
       BACKGROUND OF THE DISCLOSURE 
       [0002]    A variety of thermal management devices are known to the art, including conventional fan based systems, piezoelectric systems, and synthetic jet actuators. The latter type of system has emerged as a highly efficient and versatile solution where thermal management is required at the local level. Frequently, synthetic jet actuators are utilized in conjunction with a conventional fan based system. In such hybrid systems, the fan based system provides a global flow of fluid through the device being cooled, and the synthetic jet ejectors provide localized cooling for hot spots and also augment the global flow of fluid through the device by perturbing boundary layers. 
         [0003]    Various examples of synthetic jet actuators are known to the art. Some examples include those disclosed in U.S. 20070141453 (Mahalingam et al.) entitled “Thermal Management of Batteries using Synthetic Jets”; U.S. 20070127210 (Mahalingam et al.), entitled “Thermal Management System for Distributed Heat Sources”; 20070119575 (Glezer et al.), entitled “Synthetic Jet Heat Pipe Thermal Management System”; 20070119573 (Mahalingam et al.), entitled “Synthetic Jet Ejector for the Thermal Management of PCI Cards”; 20070096118 (Mahalingam et al.), entitled “Synthetic Jet Cooling System for LED Module”; 20070081027 (Beltran et al.), entitled “Acoustic Resonator for Synthetic Jet Generation for Thermal Management”; and 20070023169 (Mahalingam et al.), entitled “Synthetic Jet Ejector for Augmentation of Pumped Liquid Loop Cooling and Enhancement of Pool and Flow Boiling”. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS  
         [0004]    FIG. A 1 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0005]    FIG. A 1 - 2  is an illustration of an illumination device in accordance with the teachings herein. 
           [0006]    FIG. A 1 - 3  is an illustration of an illumination device in accordance with the teachings herein. 
           [0007]    FIG. A 2 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0008]    FIG. A 3 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0009]    FIG. A 4 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0010]    FIG. A 5 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0011]    FIG. A 6 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0012]    FIG. B 1 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0013]    FIG. C 1 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0014]    FIG. C 2 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0015]    FIG. D 1 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0016]    FIG. D 1 - 2  is an illustration of an illumination device in accordance with the teachings herein. 
           [0017]    FIG. D 2 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0018]    FIG. D 2 - 2  is an illustration of a portion of the housing structure of the device of FIG. D 2 - 1 . 
           [0019]    FIG. D 3 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0020]    FIG. E 1 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0021]    FIG. E 2 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0022]    FIG. E 3 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0023]    FIG. E 4 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0024]    FIG. F 1 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0025]    FIG. G 1 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0026]    FIG. G 2 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0027]    FIG. H 1 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0028]    FIG. H 2 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
           [0029]    FIG. H 3 - 1  is an illustration of an illumination device in accordance with the teachings herein. 
       
    
    
     DETAILED DESCRIPTION  
       [0030]    The devices and methodologies disclosed herein may be further understood with reference to the particular, non-limiting embodiments depicted in FIGS. A 1 - 1  through G 2 - 1 . In these figures, like elements have been given like numerical identifiers. A listing of the numerical identifiers is attached hereto as APPENDIX A. 
         [0031]    With reference to FIGS. A 1 - 1  to A 1 - 3 , a first embodiment of an LED light fixture in accordance with the teachings herein is disclosed. As seen therein, the light fixture a 1 - 01  comprises a light-emitting portion a 1 - 03  which emits light, and a connector a 1 - 05  which connects the light fixture a 1 - 01  to a light fixture. In the particular embodiment depicted, the connector a 1 - 05  is a threaded connector that rotatingly engages a complimentary shaped socket in an electrical outlet (not shown), though it will be appreciated that the light fixtures disclosed herein are not necessarily limited to use in conjunction with such an outlet. 
       Electrical Outlets 
       [0032]    The various embodiments of light fixtures disclosed herein may be equipped with various electrical connectors. These include, without limitation, threaded connectors that rotatingly engage complimentary shaped sockets in an electrical outlet; prong connectors, which may be male or female, and which mate with complimentary shaped prongs or receptacles in an electrical outlet; cord connectors; and the like. The choice of connector may vary from one application to another and may depend, for example, on the wattage output of the light fixture and other such considerations as are known to the art. It will be understood, however, that while embodiments of light fixtures may have been disclosed or illustrated herein as having a particular connector type, any other suitable connector, including those described above, may be substituted where suitable for a particular application. 
       Bulb Coatings/Pigments 
       [0033]    The various embodiments of light fixtures disclosed herein may be equipped with various bulbs. These bulbs, or any portion thereof, may be clear, opaque, specularly or diffusively transmissive or reflective, polarizing, mirrored, colored, or any combination of the foregoing. For example, in some embodiments, the bulb may be equipped with a film or pigment which provides the light fixture with a desired optical footprint, or which extracts 
         [0034]    These bulbs may also be equipped with any of the various types of phosphors as are known to the art, or combinations of such phosphors. 
       Bulb Geometries 
       [0035]    The various embodiments of light fixtures disclosed herein may be equipped with bulbs having various geometries. 
         [0036]    The above description of the present invention is illustrative, and is not intended to be limiting. It will thus be appreciated that various additions, substitutions and modifications may be made to the above described embodiments without departing from the scope of the present invention. Accordingly, the scope of the present invention should be construed in reference to the appended claims. 
       Appendix A 
     (Parts List) 
       [0037]      01 : Light Source 
         [0038]      03 : Housing 
         [0039]      05 : Electrical Connector Module 
         [0040]      07 : Synthetic Jet Actuator 
         [0041]      09 : Synthetic Jet Ejector 
         [0042]      11 : Actuator Housing 
         [0043]      13 : Diaphragm 
         [0044]      15 : LED 
         [0045]      17 : Synthetic Jet 
         [0046]      19 : Internal Aperture 
         [0047]      21 : External Aperture 
         [0048]      23 : External Vent 
         [0049]      25 : Pedestal 
         [0050]      27 : Heat Fin 
         [0051]      29 : Synthetic Jet Ejector/Heat Sink Combination 
         [0052]      31 : LED Support Structure 
         [0053]      33 : Active Diaphragm 
         [0054]      35 : Passive Diaphragm 
         [0055]      37 : Channel 
         [0056]      39 : Externally Mounted LED 
         [0057]      41 : Nozzle 
         [0058]      43 : Synthetic Jet Actuator Support Structure 
         [0059]      45 : Reflective Material 
         [0060]      47 : Porous Medium 
         [0061]      49 : Heat Pipe 
         [0062]      51 : Internal Chamber 
         [0063]      53 : Region 
         [0064]      55 : Internal Housing Element 
         [0065]      57 : External Housing Element 
         [0066]      59 : Heat Sink