Patent Publication Number: US-10309591-B2

Title: LED light and LED string light thereof

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure generally relates to light sources field, and especially relates to a Light-Emitting Diode (LED) light and a Light-Emitting Diode (LED) string light thereof. 
     2. Description of Related Art 
     In general, a typical string lamp includes a plurality of holders serially connected to each other and a plurality of corresponding bulbs. The bulb is easy to break or crash without any protective configuration, thereby the typical holder and the bulb may be disassembly to carry during no use, but not be carried as an integrated configuration. The plurality of bulbs is respectively needed to be installed in their corresponding holders before the conventional string lamp is used. After it is used, the plurality of bulbs is respectively removed from their corresponding holders to left alone, thereby time and effort is wasted. With the configuration of the above conventional string lamp, after the string lamp is used, the surface temperature of the bulb is very high and easy to burn the hand, thus causing the safety hazard. Therefore, it is needed to design a new string lamp to solve the above problems. 
     SUMMARY 
     The disclosure relates to an LED light and an LED string light with a plurality of LED lights serially connected thereof which may have an integral configuration without needing assembly or disassembly and time and effort saving, and not only improve heat dissipation effects and the lifespan of the LED light, but also have high luminous efficiency and energy saving and environmental protection. 
     In one aspect, an LED light includes: a holder, a case, a heat sink received in the case, an LED driver electrically connected to the holder and received in the heat sink, a lampshade and a shell. The holder includes a rib and the case includes a supporting portion and a sliding groove alternatively connected with the supporting portion. The rib slides into the supporting portion from the sliding groove to abut against the supporting portion so that the holder is positioned on the case. The shell passes through the lampshade and the case to connect the shell, the lampshade and the case together. 
     Wherein the LED light further includes a body received in the case, the body includes a baseboard connected to an end of the heat sink, and a plurality of LEDs positioned on the baseboard. 
     Wherein the LED light further includes a wire passing through the LED driver and the heat sink to electrically connect to the LED driver, one end of the wire is connected to the holder and the other end of the wire is connected to the baseboard. 
     Wherein the case includes a first fixing portion and a first recess connected to the first fixing portion, the lampshade includes a second fixing portion so that the shell passes through the second fixing portion and the first fixing portion in turn; the cross-section of the first fixing portion is ellipsoidal configuration and the cross-section of the second fixing portion is semicircular configuration. 
     Wherein the plurality of LEDs is arranged, in an orderly manner, on a side of the baseboard away from the heat sink, the light emitted from the LEDs is filled with the lampshade and the lampshade is a PC transparent material. 
     Wherein the shell is a frame structure and includes a plurality of first supporting members and a plurality of second supporting members perpendicularly connected to the first supporting members, the plurality of second supporting members is arranged parallel to each other, both the first and second supporting members are inside hollow stainless steel bars. 
     Wherein the first supporting member passes through the second fixing portion and the first fixing portion in turn. 
     Wherein the heat sink includes a plurality of first cooling chambers and a plurality of second cooling chambers alternatively connected with the plurality of first cooling chambers, both the first and second cooling chambers are sealed to each other along a horizontal direction, and among the plurality of first cooling chambers and the plurality of second chambers, a circular receiving room is formed to receive the LED driver therein. 
     Wherein the first cooling chamber includes a second recess corresponding to the first recess, the first cooling chamber and the second cooling chamber respectively includes a plurality of cooling fins. 
     In another aspect, an LED string light according to an exemplary embodiment of the present disclosure includes a plurality of LED lights serially connected to each other, each LED light includes a holder, a case, a heat sink received in the case, an LED driver electrically connected to the holder and received in the heat sink, a lampshade connected with the bottom of the case, and a shell. The holder includes a rib formed on the bottom thereof, and the case includes a supporting portion and a sliding groove alternatively connected with the supporting portion. The rib slides into the supporting portion from the sliding groove to abut against the supporting portion so that the holder is positioned on the case. The shell passes through the lampshade and the case to connect the shell, the lampshade and the case together. 
     Wherein the LED light further includes a body received in the case and a wire passing through the LED driver and the heat sink to electrically connect to the LED driver, the body includes a baseboard connected to an end of the heat sink, and a plurality of LEDs positioned on the baseboard; one end of the wire is connected to the holder and the other end of the wire is connected to the baseboard. 
     Wherein the case includes a first fixing portion and a first recess connected to the first fixing portion, the lampshade includes a second fixing portion so that the shell passes through the second fixing portion and the first fixing portion in turn; the cross-section of the first fixing portion is ellipsoidal configuration and the cross-section of the second fixing portion is semicircular configuration. 
     Wherein the plurality of LEDs is arranged, in an orderly manner, on a side of the baseboard away from the heat sink, the light emitted from the LEDs is filled with the lampshade and the lampshade is a PC transparent material; the baseboard includes a plurality of through-holes, some part of the heat generated by the LEDs is emitted from the lampshade, the other part of the heat is imported into the heat sink from the plurality of through-holes. 
     Wherein the shell is a frame structure and includes a plurality of first supporting members and a plurality of second supporting members perpendicularly connected to the first supporting members, the plurality of second supporting members is arranged parallel to each other, both the first and second supporting members are inside hollow stainless steel bars. 
     Wherein the heat sink includes a plurality of first cooling chambers and a plurality of second cooling chambers alternatively connected with the plurality of first cooling chambers, both the first and second cooling chambers are sealed to each other along a horizontal direction, and among the plurality of first cooling chambers and the plurality of second chambers, a circular receiving room is formed to receive the LED driver therein; the first cooling chamber includes a second recess corresponding to the first recess, the first cooling chamber and the second cooling chamber respectively includes a plurality of cooling fins. 
     The present disclosure provides the advantages as below. 
     The sliding groove alternatively connects with the supporting portion. The rib slides into the supporting portion from the sliding groove to abut against the supporting portion so that the holder is positioned on the case, thereby a reliable connection between the holder and the case is obtained. Meanwhile, the shell protect the lampshade from being crash, thereby an integral configuration without needing assembly or disassembly and time and effort saving are obtained. The heat sink and the shell are provided to not only improve heat dissipation effects and the lifespan of the LED light, but also have the characteristics of high luminous efficiency and energy saving and environmental protection. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view of the LED string light in accordance with an exemplary embodiment. 
         FIG. 2  is an exploded schematic view of the LED light of  FIG. 1 . 
         FIG. 3  is a schematic view of a heat sink of the LED light of  FIG. 2 . 
         FIG. 4  is a schematic view of a holder of the LED light of  FIG. 2  from another side. 
         FIG. 5  is a schematic view of a body of the LED light of  FIG. 2 . 
     
    
    
     DETAILED DESCRIPTION 
     The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings, in which like reference numerals indicate similar elements. 
     Referring to  FIG. 1 , the LED string light according to an exemplary embodiment includes a plurality of LED lights  2  serially connected to each other by wires. 
     In an exemplary embodiment of the present disclosure, the LED light  2  defines a plastic layer (not labeled) on two ends which are connected to the wire  1 . The plastic layer is used to protect the connecting point of the LED light  2  and the wire  1 . 
     Furthermore, referring to  FIG. 2  and  FIG. 4 , the LED light  2  includes a holder  21 , a case  22 , an LED driver  23 , a heat sink  24 , a lampshade  25  and a shell  26 . The LED driver  23  is electrically connected to the holder  21  and received in the heat sink  24 . The case  22  is received in the heat sink  24 . The holder  21  includes a rib  211  formed on the bottom thereof, and the case  22  includes a supporting portion  223  and a sliding groove  224  alternatively connected with the supporting portion  223 . The rib  211  slides into the supporting portion  223  from the sliding groove  224  to abut against the supporting portion  223  so that the holder  21  is positioned on the case  22 . The shell  26  passes through the lampshade  25  and the case  22  to connect the shell  26 , the lampshade  25  and the case  22  together. 
     In an exemplary embodiment of the present disclosure, the LED string light includes a plurality of LED lights  2  serially connected to each other by wires, thereby an integral configuration without assembly or disassembly and time and effort saving are obtained. Each LED light  2  includes the shell  26  protecting the lampshade  25 , comparing to a conventional fragile incandescent lamp, the shell  26  may protect the lampshade  25  from being crash. The heat sink  24  and the shell  26  are provided to not only improve heat dissipation effects and the lifespan of the LED light, but also have the characteristics of high luminous efficiency and energy saving and environmental protection. 
     In an exemplary embodiment of the present disclosure, The holder  21  includes the rib  211 , the case  22  includes the supporting portion  223  and the sliding groove  224  alternatively connected with the supporting portion  223 . The rib  211  slides into the supporting portion  223  from the sliding groove  224  to abut against the supporting portion  223  so that the holder  21  is reliably positioned on the case  22 . The holder  21  and the case  22  respectively includes a screw mounting portion (not labeled). When the rib  211  slides into the supporting portion  223  from the sliding groove  224  to abut against the supporting portion  223  to reliably position the holder  21  on the case  22 , the screw mounting portion of the holder  21  is coincided with the screw mounting portion of the case  22 . At this time, the screw is inserted to lock with the screw mounting portions of the holder  21  and the case  22 , thereby the connection force between the holder  21  and the case  22  is further enhanced. The LED driver  23 , the heat sink  24 , the lampshade  25  and the shell  26  all are assembled with the case  22 , so that the self-weights of the LED driver  23 , the heat sink  24 , the lampshade  25  and the shell  26  all are undertook by the case  22 . Therefore, the connection force requirement between the holder  21  and the case  22  is very high in order to avoid the lack of connection force between the holder  21  and the case  22 , resulting in the disjointed fall between the holder  21  and the case  22  during use of the LED light  2 , which may cause the safety hazard and affect the lifespan of the LED light  2 . 
     In an exemplary embodiment of the present disclosure, the LED driver  23  includes a plurality of circuit units (not shown) to form a driving circuit (not shown). The driving circuit is provided to control lighting and extinguishing the LED light  2 . The LED driver  23  is received in the heat sink  24  for dissipating the heat from the LED driver  23 , thereby avoid the LED driver  23  fail to work and affect the lifespan of the LED light  2  due to the heat caused by the LED driver  23  itself too high. 
     In an exemplary embodiment of the present disclosure, the holder  21  further includes an inner hollow buckle (not labeled) for installing the LED string light to external devices (not shown). The buckle includes a sliding slot for sliding a hanging rope therein to unfold the LED string light. 
     Furthermore, referring to  FIG. 5 , the LED light  2  also includes a body  27  received in the lampshade  25 . The body  27  includes a baseboard  271  connected to an end of the heat sink  24 , and a plurality of LEDs  272  positioned on the baseboard  271 . 
     In an exemplary embodiment of the present disclosure, the plurality of LEDs  272  is arranged, in an orderly manner, on a side of the baseboard  271  away from the heat sink  24 . The light emitted from the LEDs  272  is filled with the lampshade  25  and the lampshade  25  is a PC transparent material. The baseboard  271  includes a plurality of through-holes (not shown), some part of the heat generated by the LEDs  272  is emitted from the lampshade  25 , the other part of the heat is imported into the heat sink  24  from the plurality of through-holes. 
     Furthermore, the LED light  2  also includes a wire  28  passing through the LED driver  23  and the heat sink  24  to electrically connect to the LED driver  23 . One end of the wire  28  is connected to the holder  21  and the other end of the wire  28  is connected to the baseboard  271 . 
     In an exemplary embodiment of the present disclosure, the electrical connection between the holder  21 , the body  27  and the LED driver  23  is realized by the wire  28 . 
     Furthermore, the case  22  includes a plurality of first fixing portions  221  and a first recess  222  connected to the plurality of first fixing portions  221 . The lampshade  25  includes a plurality of second fixing portions  251  so that the shell  26  passing through the second fixing portion  251  and the first fixing portion  221  in turn. The cross-section of the first fixing portion  221  is ellipsoidal configuration and the cross-section of the second fixing portion  251  is semicircular configuration. 
     In an exemplary embodiment of the present disclosure, the shell  26  is a frame structure and includes a plurality of first supporting members  261  and a plurality of second supporting members  262  perpendicularly connected to the first supporting members  261 . The first supporting member  261  passes through the second fixing portion  251  and the first fixing portion  221  in turn. The plurality of second supporting members  262  is arranged parallel to each other. Both the first and second supporting members  261 ,  262  are inside hollow stainless steel bars to improve the breathability of the shell  26 . 
     In an exemplary embodiment of the present disclosure, the LED light further includes a first fixing member and a second fixing member. After the first supporting member  261  passes through the second fixing portion  251  and the first fixing portion  221  in turn, the first fixing member is mounted on the first fixing portion  221  and fixed on an end of the first supporting member  261 , the second fixing member is mounted on the second fixing portion  251  and fixed on an opposite end of the first supporting member  261 . The first recess  222  connects with the first fixing portion  221  so that the first fixing member may be rapidly mounted on the fixing portion  221 . 
     In an exemplary embodiment of the present disclosure, preferably, the first supporting member  261  includes threads, the first fixing member is a cap nut and the second fixing member is an ordinary nut. The first fixing member and the second fixing member are threadedly fastened on the first supporting member  261  so that the shell  26 , the lampshade  25  and the case  22  may tightly fixed together. 
     Furthermore, referring to  FIG. 3 , the heat sink  24  includes a plurality of first cooling chambers  241  and a plurality of second cooling chambers  242  alternatively connected with the plurality of first cooling chambers  241 . Among the plurality of first cooling chambers  241  and the plurality of second chambers  242 , a circular receiving room (not labeled) is formed to receive the LED driver  23  therein. 
     In an exemplary embodiment of the present disclosure, both the first and second cooling chambers  241 ,  242  are sealed to each other along a horizontal direction so that the first cooling chamber  241  and the second cooling chamber  242  may ventilate up and down, which is conducive to heat conduction and improve heat dissipation. The first cooling chamber  241  includes a second recess  2410  corresponding to the first recess  222 , the first cooling chamber  241  and the second cooling chamber  242  respectively includes a plurality of cooling fins  2411 . 
     In an exemplary embodiment of the present disclosure, the first cooling chamber  241  includes the second recess  2410  corresponding to the first recess  222 , the first cooling chamber  241  and the second cooling chamber  242  respectively includes the plurality of cooling fins  2411 , thereby the assembly of the heat sink  24  and the case  22  is more rapid and the area of the heat dissipation is increased to improve the heat dissipation efficiency of the heat sink  24 . 
     Although the features and elements of the present disclosure are described as embodiments in particular combinations, each feature or element can be used alone or in other various combinations within the principles of the present disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.