Abstract:
The invention provides a packaged system that is suitable for a LED package of high power. The packaged system further includes a heat-conducting device surrounded by at least one heat-dissipating fin to effectively dissipate the heat generated by the high power LED package. The packaged system with high efficiency of heat dissipation can be incorporated into various projecting illuminating equipments, such as a flashlight or floodlight, by simply installing the present invention into a housing and providing power connection thereto.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to a packaged system; the packaged system is for packaging a light-emitting apparatus and is capable of further integrating an illuminating equipment. Particularly, the present invention relates to a packaged system; the packaged system is for packaging the high power LED, and it provides a highly efficient heat-dissipating apparatus and collocates the integrated power supply and the reflector apparatus for further applications on various projecting illuminating equipments, such as a flashlight or floodlight. 
       BACKGROUND OF THE INVENTION 
       [0002]    Presently, there are many manufacturers who invest in manufacturing high illumination LED packages with different shapes. The difference between the high illumination LED packages and the traditional LED bulbs is that the high illumination LED uses larger emitter chip, but it also correspondingly causes higher power requirement. In general, the packages are originally designed to replace the traditional bulbs. However, as a result of the shape, the dimension, and the power requirement of the high illumination LED, the LED manufacturers have encountered unexpected difficulties on manufacturing. An example of the kind of the high illumination LED is Luxeon™ Emitter Assembly LED (Luxeon is the registered trademark of the Lumileds Lighting, LLC.). Although the package is capable of generating higher illumination than the traditional LED bulb, it also generates a greater amount of heat. If the heat can not be dissipated effectively, the emitter chip may be damaged. 
         [0003]    In general, in order to overcome the problems of heat generated by the LED package, the LED manufacturers will incorporate a heat-dissipating channel into the LED package. For example, Luxeon LED is incorporated with a metal heat dissipation board, and the metal heat dissipation board is disposed at the back of the LED package for conducting heat. In practical application, a much more ideal solution is to let the metal board further contact a heat dissipation surface for effectively cooling the LED package. In prior art, there have been trials in which these LED packages incorporate with other components. For example, the manufacturers who use Luxeon LED try to incorporate the Luxeon LED with a circuit board. The circuit board disposes many heat-conducting boards near the mount point of the LED for maintaining the cool effect of the heat-dissipating channel of the LED. Although these components are capable of dissipating heat effectively, their volume is often too large to be incorporated into compact illuminating equipments, such as a flashlight or floodlight. At the same time, because the circuit board which disposes heat-conducting boards also includes many other heat sink material, it is very difficult to weld the heat-conducting board with the circuit board without applying a great deal of heat. 
         [0004]    Accordingly, it is necessary to provide a component which is capable of mounting on the high illumination LED and includes a good heat-dissipating apparatus. Moreover, the components also have the capability of further being integrated into illuminating equipments. 
       SUMMARY OF THE INVENTION 
       [0005]    A scope of the present invention provides an illuminating equipment using the high power LED with highly efficient heat dissipation for preventing the efficiency of illumination of the high power LED from being reduced. 
         [0006]    Another scope of the present invention provides a packaged system; the packaged system is for packaging the high power LED, and it provides the heat-dissipating apparatus with high efficiency. The packaged system is suitable for being disposed into a housing, and various projecting illuminating equipments are constructed by further integrating the power supply and the optical reflector apparatus. In other words, the packaged system has the plug and play (also called PnP) function. 
         [0007]    The illuminating equipment, according to a preferred embodiment of the present invention, includes a housing, a reflector, a packaged system, and a power supply. The housing thereon defines a head end. The reflector is disposed in the housing and near the head end, and it has an aperture. The packaged system is disposed in the housing and includes a casing, a heat-conducting device, at least one heat-dissipating fin, and a light-emitting apparatus. The heat-conducting device which is disposed in the casing has a flat portion at one end, and the heat-conducting device is a hollow chamber, a working fluid and a capillary structure are disposed therein. The at least one heat-dissipating fin is disposed in the casing and mounted on the periphery of the heat-conducting device. The light-emitting apparatus is mounted on the flat portion of the heat-conducting device and disposed through the aperture to an optical center of the reflector for emitting a light in a form of point light source, wherein the heat which is generated during the operation of the light-emitting apparatus is conducted by the flat portion to the at least one heat-dissipating fin, and then it is dissipated by the at least one heat-dissipating fin. The power supply which is electrically connected to the light-emitting apparatus is used for providing the light-emitting apparatus with power when emitting light. The power supply can be disposed inside or outside the casing. 
         [0008]    The efficiency of heat dissipation of the illuminating equipment, according to the present invention, is greatly increased. Although the illuminating equipment adopts high power LED, a great deal of heat which is generated during light emitting can be effectively dissipated by the heat-conducting device and the heat-dissipating fin to maintain the emitting efficiency of the LED. Moreover, the present invention provides a plug and play packaged system which is suitable for various illuminating equipment, and users can easily install and replace the packaged system. 
         [0009]    The objective of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment, which is illustrated in the various figures and drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE APPENDED DRAWINGS 
         [0010]      FIG. 1A  is a cross-sectional view of the illuminating equipment according to the first preferred embodiment of the invention. 
           [0011]      FIG. 1B  is a cross-sectional view of the illuminating equipment according to the second preferred embodiment of the invention. 
           [0012]      FIG. 2A  is an outside perspective view of the illuminating equipment according to the third preferred embodiment of the invention. 
           [0013]      FIG. 2B  is a cross-sectional view in  FIG. 2A  along the P-P line showing the illuminating equipment. 
           [0014]      FIG. 2C  shows another embodiment of the illuminating equipment in  FIG. 2B . 
           [0015]      FIG. 3  is a three-dimensional view of the heat-conducting device and the at least one heat-dissipating fin according to an embodiment of the invention. 
           [0016]      FIG. 4  is a side view of the heat-conducting device and the at least one heat-dissipating fin according to an embodiment of the invention. 
           [0017]      FIG. 5  is a vertical view of the light-emitting apparatus according to an embodiment of the invention. 
           [0018]      FIG. 6  shows the light-emitting apparatus according to an embodiment of the invention, and the light-emitting apparatus is mounted on the flat portion of the heat-conducting device. 
           [0019]      FIG. 7  illustrates an embodiment of the heat-dissipating fin according to the present invention, and the heat-dissipating fin has at least one formed-through hole through which at least electric line can pass. 
           [0020]      FIG. 8  illustrates an embodiment of the heat-dissipating fin according to the present invention, and the heat-dissipating fin is disk-like. 
           [0021]      FIG. 9  illustrates an embodiment of the heat-dissipating fin according to the present invention, and the heat-dissipating fin is irregularly shaped. 
           [0022]      FIG. 10  illustrates an embodiment of the heat-dissipating fin according to the present invention, and the heat-dissipating fin is radial shaped. 
           [0023]      FIG. 11  illustrates that in order to increase the efficiency of heat dissipation of the packaged system according to the present invention, the casing thereon can provide a plurality of ventilating holes. 
           [0024]      FIG. 12A  illustrates that in order to increase the efficiency of heat dissipation of the illuminating equipment according to the first preferred embodiment of the present invention, the housing thereon can provide a plurality of ventilating holes. 
           [0025]      FIG. 12B  illustrates that in order to increase the efficiency of heat dissipation of the illuminating equipment according to the second preferred embodiment of the present invention, the housing thereon can provide a plurality of ventilating holes. 
           [0026]      FIG. 12C  illustrates that in order to increase the efficiency of heat dissipation of the illuminating equipment according to the third preferred embodiment of the present invention, the housing thereon can provide a plurality of ventilating holes. 
           [0027]      FIG. 12D  is an exterior view and an enlarged partial view of the illuminating equipment according to the second preferred embodiment of the present invention, and the housing thereon provides a plurality of ventilating holes and disposes a flow-guiding board near the ventilating holes. 
           [0028]      FIG. 13A  illustrates that in order to increase the efficiency of heat dissipation of the illuminating equipment according to the first preferred embodiment of the present invention, a fan can be disposed in the housing. 
           [0029]      FIG. 13B  illustrates that in order to increase the efficiency of heat dissipation of the illuminating equipment according to the second preferred embodiment of the present invention, a fan can be disposed in the housing. 
           [0030]      FIG. 14A  is an exterior view of the illuminating equipment according to the fourth preferred embodiment of the present invention. 
           [0031]      FIG. 14B  is a blown up view in  FIG. 14A  showing the illuminating equipment. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0032]    The purpose of the present invention is to provide a packaged system; the packaged system is for packaging a light-emitting apparatus and is capable of further integrating in an illuminating equipment. Particularly, the present invention relates to a packaged system; the packaged system is used for packaging the high power LED,; it also provides a highly efficient heat-dissipating apparatus and collocates the integrated power supply and the reflector apparatus for further applications on various projecting illuminating equipments, such as a flashlight or floodlight. The preferred embodiments according to the present invention will be described in detail as follows. 
         [0033]    Referring to  FIG. 1A ,  FIG. 1A  is a cross-sectional view of the illuminating equipment  1  according to the first preferred embodiment of the invention. The illuminating equipment  1  comprises a housing  10 , a reflector  11 , a packaged system  12 , and a power supply  14 . The housing  10  thereon defines a head end. The reflector  11  is disposed in the housing  10  and near the head end, and it has an aperture. The packaged system  12  is disposed in the housing  10  and comprises a casing  120 , a heat-conducting device  122 , at least one heat-dissipating fin  124 , and a light-emitting apparatus  126 . 
         [0034]    As shown in  FIG. 1A , the heat-conducting device  122  is disposed in the casing  120 , and it has a flat portion. The heat-conducting device  122  is a hollow chamber; a working fluid and a capillary structure are disposed therein. In one embodiment, the heat-conducting device  122  is a heat pipe or a heat column, and the flat portion has extra processing during the manufacturing processes of the heat conductor. The at least one heat-dissipating fin  124  is disposed in the casing  120  and is mounted on the periphery of the heat-conducting device  122  for increasing the efficiency of heat dissipation. The light-emitting apparatus  126  is mounted on the flat portion of the heat-conducting device  122  and is disposed through the aperture to an optical center of the reflector  11 , for emitting a light in a form of point light source, wherein the heat, generated during the operation of the light-emitting apparatus  126 , is conducted by the flat portion of the heat conducting device  122  to the at least one heat-dissipating fin  124 , and then it is dissipated by the at least one heat-dissipating fin  124 . A circuit board  16  is disposed on another end of the heat-conducting device  122  in the housing  10 , and it is electrically connected to the light-emitting apparatus  126  and the power supply  14  for controlling the light-emitting apparatus  126  to emit light. The power supply  14  is disposed in the housing  10  and is electrically connected to the circuit board  16  via an electric line (not shown in  FIG. 1A ) for providing the light-emitting apparatus  126  with the power when emitting light. In one embodiment, the reflector  11  reflects the light emitted by the light-emitting apparatus  126  to the outside of the housing  10 . The power supply  14  comprises at least one battery. 
         [0035]      FIG. 1B  is a cross-sectional view of the illuminating equipment  1  according to the second preferred embodiment of the invention. As shown in  FIG. 1B ,  FIG. 1B  and  FIG. 1A  have units with the same notations to execute the same functions, so unnecessary details will not be repeated here. In the preferred embodiment, the housing  10  provides a handle  100  on an upper edge thereof, and a larger space is configured under the housing  10  for disposing the power supply  14 . For providing the illuminating equipment  1  higher power input, the power supply  14  can comprise more batteries or other rechargeable devices. 
         [0036]    Referring to  FIG. 2A ,  FIG. 2A  is an outside perspective view of the illuminating equipment  1  according to the third preferred embodiment of the invention.  FIG. 2B  is a cross-sectional view of  FIG. 2A  along the P-P line showing the illuminating equipment  1 .  FIG. 2C  shows another embodiment of the illuminating equipment  1  in  FIG. 2B . As shown in  FIG. 2B ,  FIG. 2B  and  FIG. 1A  have the units with the same notations to execute the same functions, so unnecessary details will not be repeated here. As shown in  FIG. 2B  and  FIG. 2C , the power supply  14  can connect to the housing  10  from the outside or dispose in the housing  10 . In one embodiment, the power supply  14  can be a power source for transforming D.C. power to A.C. power. 
         [0037]      FIG. 3  and  FIG. 4  are a three-dimensional view and a side view of the heat-conducting device  122  and the at least heat-dissipating fin  124  according to an embodiment of the invention. The heat-conducting  122  according to an embodiment of the invention adopts a heat-dissipating way using vapor cycle, and the working principles are described below. The heat-conducting device  122  is a hollow chamber, and a working fluid is placed therein. The material of the heat-conducting device  122  is copper. The hollow chamber is a vacuum, and a capillary structure (not shown in  FIG. 3  and  FIG. 4 ) is disposed inside. When one end of the hollow chamber is heated, the working fluid will absorb the heat and evaporate to become a vapor. The vapor can rapidly conduct the heat to the heat-dissipating fin  124  which is mounted on the periphery of the hollow chamber, and the heat-dissipating fin  124  further dissipate the heat out of the packaged system  12 . The gaseous working fluid is condensed to become the liquid working fluid and absorbed back to the heated end of the hollow chamber to finish a thermal cycle. As described above, the heat-conducting device  122  collocated with the heat-dissipating fin  124  has high efficiency in heat dissipation. 
         [0038]    Referring to  FIG. 5  to  FIG. 7 ,  FIG. 5  is a vertical view of the light-emitting apparatus  126  according to an embodiment of the invention. The light-emitting apparatus  126  comprises a substrate  1260 , at least one semiconductor light-emitting apparatus  1262 , and two electrodes  1264 . The at least one semiconductor light-emitting apparatus  1262  is disposed on the substrate  1260  for emitting the light. The two electrodes  1264  are respectively disposed on the substrate  1260  and electrically connected to each of the at least one semiconductor light-emitting apparatus  1262 . In one embodiment, the substrate  1260  can be formed of a silicon material or a metal material, and each of the at least one semiconductor light-emitting apparatus  1262  is a light-emitting diode or a laser diode. Particularly, the light-emitting diodes have high power and high illumination. Notably, the light-emitting apparatus  126  according to the present invention packages the at least one semiconductor light-emitting apparatus  1262  into a single package, so the light-emitting apparatus  126  emits a light in a form of point light source. As shown in  FIG. 6 , the light-emitting apparatus  126  is mounted on the flat portion of the heat-conducting device  122 . In practical application, the light-emitting apparatus  126  can be mounted on the flat portion of the heat-conducting device  122  by wire bonding or flipping chip. As shown in  FIG. 7 , each of the at least one heat-dissipating fin  124  has at least one formed-through hole  1240  through which at least one electric line is wired to the circuit board  16  and the light-emitting apparatus  126 . 
         [0039]    Referring to  FIG. 8  to  FIG. 10 , the heat-dissipating fin  124  has various embodiments.  FIG. 8  illustrates an embodiment of the heat-dissipating fin  124  according to the present invention, and the heat-dissipating fin  124  is disk-like. As shown in  FIG. 8 , the heat-dissipating fin  124  can be irregularly shaped, such as saw-toothed shaped, petaloid shaped, or radial shaped (as shown in  FIG. 9 ), and the capability of being disposed into the casing  120  is the primary principle. The heat-dissipating fin  124  therein can have open holes, and the material of the heat-dissipating fin  124  can be copper, aluminum, Magnesium and Aluminum Alloy, or other similar material. 
         [0040]    As shown in  FIG. 1 , in order to increase the efficiency of heat dissipation of the packaged system  12 , the casing  120  thereon can provide a plurality of ventilating holes through which hot air in the housing  10  and the casing  120  induced by the heat is exhausted outside, thus increasing the efficiency of heat dissipation during the operation of the light-emitting apparatus  126 . In order to achieve the same goal, as shown in  FIG. 12A  to  FIG. 12C , the housing  10  thereon also provides a plurality of ventilating holes. In order to let the hot air exhaust out smoothly, each of the ventilating holes  102  of the casing  120  can correspond with the ventilating holes  102  of the housing  10 , and the heat in the illuminating equipment  1  is exhausted out through the ventilating holes  102 .  FIG. 12D  is an exterior view and an enlarged partial view of the illuminating equipment  1  according to the second preferred embodiment of the present invention. As shown in  FIG. 12D , the housing  10  thereon provides a plurality of ventilating holes  102  and disposes a flow-guiding board  104  near the ventilating holes  102  for the hot air to flow along the flow-guiding board  104 . 
         [0041]    As shown in  FIG. 13A  and  FIG. 13B , in order to increase the efficiency of heat dissipation of the illuminating equipment  1 , a fan  18  can be disposed at one end of the circuit board  16  in the housing  10 . The fan  18  is electrically connected to the circuit board  16 , and the circuit board  16  controls the switching-on or switching-off of the fan  18  by use of a controlling circuit. The controlling circuit (not shown in  FIG. 13A  and  FIG. 13B ) is operated by the circuit board  16  for detecting a temperature of the surrounding of the light-emitting apparatus  126 . When the temperature is higher than a predefined value, the controlling circuit switches on the fan  18  for further cooling the light-emitting apparatus  126 . Notably,  FIG. 13A  and  FIG. 13B  just show the first and the second preferred embodiments according to the present invention. 
         [0042]    Referring to  FIG. 14A  and  FIG. 14B ,  FIG. 14A  is an exterior view of the illuminating equipment  1  according to the fourth preferred embodiment of the present invention.  FIG. 14B  is a blown-up view of  FIG. 14A  showing the illuminating equipment  1 . As shown in  FIG. 14A , the housing  10  of the illuminating equipment  1  comprises a shell  106  and an embedding assembly  108 . One end of the packaged system  12  is disposed in the shell  106  of the casing  10 . The embedding assembly  108  is mounted on the shell  106 , and the embedding assembly  108  thereon has two resilient bodies  1080  for the assembling of the illuminating equipment  1 . For example, when users want to assemble the illuminating equipment  1  to a hole on a wall or a ceiling, users can first bend the two resilient bodies  1080  respectively to parallel with the casing  120  of the packaged system  12  and then embed the illuminating equipment  1  into the hole of the wall or the ceiling. When the illuminating equipment  1  is embedded into the hole, the two resilient bodies  1080  will restore to original state for clasping the illuminating equipment  1  into the hole. 
         [0043]    The present invention provides a packaged system which has high efficiency of heat dissipation; the packaged system is for packaging a light-emitting apparatus and dissipating the heat, generated by the high illumination light-emitting diode, by the heat-conducting device and the heat-dissipating fin. The packaged system collocates the integrated power supply and the reflector apparatus for further applications on various projecting illuminating equipments. 
         [0044]    With the example and explanations above, the features and spirits of the invention will be hopefully well described. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teaching of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.