Patent Publication Number: US-2015085505-A1

Title: Lamp pole and led lamp

Description:
FIELD 
     The present disclosure relates to a lamp pole and a light emitting diode (LED) lamp. 
     BACKGROUND 
     An LED lamp usually includes a lamp head, a base, and a lamp pole. The lamp pole connects the lamp head to the base. The lamp pole is usually hollow and made of aluminum. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout several views. 
         FIG. 1  is a perspective view of an embodiment of an LED lamp. 
         FIG. 2  is an exploded view of part of the LED lamp of  FIG. 1 . 
         FIG. 3  is a cross-sectional view taken along line III-III of  FIG. 2 . 
         FIG. 4  is a cross-sectional view taken along line IV-IV  FIG. 2 . 
     
    
    
     DETAILED DESCRIPTION 
     This disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like reference numbers indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean “at least one.” 
       FIG. 1  illustrates an embodiment of an LED lamp  100 . The LED lamp  100  can include a lamp pole  10 , a base  20 , and a lamp head  30 . A first end portion of the lamp pole  10  can be mounted to the base  20 , and a second end portion of the lamp pole  10  can be connected to the lamp head  30 . The lamp pole  10  can be configured for supporting the lamp head  30 . The lamp head  30  can include a plurality of LED lights. 
       FIG. 2  illustrates that the lamp pole  10  includes a number of movable members  11  connected in sequence and a plug  12  configured for connecting the pole  10  to the base  20 . In one embodiment, the lamp pole  10  can be made of plastic, thereby reducing a weight of the LED lamp  100 . 
     Each of the movable members  11  can include a first connecting portion  111  and a second connecting portion  112  connected to the first connecting portion  111 . The first connecting portion  111  and the second connecting portion  112  can be substantially bowl-shaped. A maximum diameter of the first connecting portion  111  can be smaller than a maximum diameter of the second connecting portion  112 . 
       FIG. 3  illustrates that the first connecting portion  111  of each movable member  11  can be connected to the second connecting portion  112  of an adjacent movable member  11  by being received in the adjacent second connecting portion  112 . The first connecting portion  111  can include an outer surface  1110 , and the second connecting portion  112  includes an inner surface  1120 . The outer surface  1110  of the movable member  11  can be in tight contact with the inner surface  1120  of the connecting portion  112  of the adjacent movable member  11 . 
     A distal end portion of the second connecting portion  112  can include a flange  1121  on the inner surface  1120 . The maximum diameter of the first connecting portion  111  can be slightly larger than the maximum diameter of the inner space of the second connecting portion  112  bound by the flange  1121 . Thus, as the first connecting portion  111  is received in the second connecting portion  112  of the adjacent movable member  11 , the flange  1121  of the second connecting portion  112  can lock the first connecting portion  111 . 
     As the movable members  11  are connected one-by-one and locked together by the flanges  1121  of the second connecting portions  112 , the movable members  11  are prevented from separating from each other. Because the first connecting portion  111  and the second connecting portion  112  can be bowl-shaped, the first connecting portion  111  can rotate in the second connecting portion  112  of the adjacent movable member  11  as a ball-and-socket joint. Therefore, each movable member  11  can be adjusted individually, and a height, bending angle, and bending direction of the lamp pole  10  can be adjusted freely. Furthermore, an illumination range of the LED lamp  100  can be easily adjusted. 
       FIG. 4  illustrates the plug  12  connected to a terminal movable member  11  at one end of the lamp pole  10 . Referring to  FIG. 2  and  FIG. 4 , the plug  12  can include a third connecting portion  121 , a shoulder  122 , and a cylinder portion  123 . The third connecting portion  121  can be bowl-shaped, and a size and shape of the third connecting portion  121  can be substantially same as a size and shape of the first connecting portion  111 . A maximum diameter of the third connecting portion  121  can be slightly smaller than the inner space of the second connecting portion  112  bound by the flange  1121 . The third connecting portion  121  can be rotatably received in the second connecting portion  112  of the terminal movable member  11 . The third connecting portion  121  can include an outer surface  1210  in tight contact with the inner surface  1120  of the second connecting portion  112  of the terminal movable member  11 . 
     A first end portion of the shoulder  122  can be connected to the cylinder portion  123 , and a second end portion of the shoulder  122  can be connected to the third connecting portion  121 . The shoulder  122 can be substantially a hollow disk. A maximum diameter of the shoulder  122  can be larger than the maximum diameter of the third connecting portion  121  and a maximum diameter of the cylinder portion  123 , and a thickness of the shoulder  122  can be smaller than a thickness of the third connecting portion  121  and a thickness of the cylinder portion  123 . The cylinder portion  123  can be latched in the base  20 . In the embodiment, an outer surface of the cylinder portion  123  can include screw threads engaged with the base  20  to enhance a connecting strength of the lamp pole  10  to the base  20 . 
     In at least one embodiment, the plug  12  can be hollow. In other embodiments, the plug  12  can be solid. 
     In at least one embodiment, the lamp pole  10  is not limited for use in the LED lamp  100 . 
     The base  20  can include an assembly surface  21  facing the lamp pole  10 . The assembly surface  21  can define a cylindrical assembly hole  22 . A diameter of the assembly hole  22  can be smaller than the maximum diameter of the shoulder  122 . The base  20  can include a power switch  23  on a side surface thereof. In at least one embodiment, the cylinder portion  123  of the plug  12  can be received in the assembly hole  22 , and the shoulder  122  is mounted on the assembly surface  21 . 
     In at least one embodiments, the plug  12  can be omitted, such that one end portion of the lamp pole  10  can be directly mounted in the base  20 . For example, the terminal movable member  11  can be latched to the base  20  by screws. 
     In assembly, the plurality of movable members  11  are connected one-by-one. Then, the plug  12  can be connected to the terminal movable member  11 , thereby assembling the lamp pole  10 . The cylinder portion  123  of the plug  12  can be screwed into the assembly hole  22  of the base  20 , such that the shoulder  122  can be mounted on the assembly surface  21  of the base  20 . Finally, the lamp head  30  can be mounted to the lamp pole  10 , thus completing assembly of the LED lamp  100 . 
     As the lamp pole  10  can be bent freely, the height, bending angle, and bending direction of the lamp pole  10  can be adjusted easily. Therefore, the illumination range of the LED lamp  100  can be adjusted more conveniently and quickly. 
     It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes can be made thereto without departing from the scope of the embodiments or the following claims.