Patent Publication Number: US-2015062899-A1

Title: Power Cord

Description:
(a) TECHNICAL FIELD OF THE INVENTION 
     This invention relates to a power cord and particularly to a power cord connecting and working with a SMD LED device with illumination functions. 
     (b) DESCRIPTION OF THE PRIOR ART 
     Nowadays, power cords commercially available function to only provide electrical connection. By means of connecting to a power source and load that completes an electric loop, electricity is provided to power-up various electronic and mechanical devices. 
     Conventional power cords are a must when working with various electronic products, such as mobile phone chargers, hair-dryers, electric fans or other large appliances; when not being used, the power cords are generally stowed aside for fear of disorder. To users, power cords for appliances are a must. However, once plugging the power cord into a wall outlet, the user will be trying to arrange the power cord and even have to use other tools to arrange it, which is obviously inconvenient and imperfect in practical use. It goes without saying that the power cord is part of the appliance, but, in the industry, the power cord is seldom properly designed for an extra function other than that of electrical power transmission. 
     Further, no matter in a house or an office, there are many computers and appliances. When the number of power cords increases, it is difficult to identify the corresponding relationship between a power cord and its connected appliance; thus, it is often necessary to lift up the power cord in order to find the wanted or corresponding power cord among the numerous power cords, or even move the appliances away from the wall for ease of search and sorting out each power cord. The numerous defects mentioned above have not been improved over the years. 
     Consequently, because of the technical defects described above, the applicant, based on many years of research and experience in the relevant industry has developed the present invention, which may effectively improve the defects described above. 
     SUMMARY OF THE INVENTION 
     In view of the above-mentioned defects, the power cord according to this invention comprises at least one light-emitting device provided with two first terminals and two second terminals; at least two first lead wires, in which one end of each of the two first lead wires is connected to each of the two first terminals and the other end of each of the two first lead wires is electrically connected to an external power source; and at least two second lead wires, in which one end of each of the two second lead wires is connected to each of the second terminals and the other ends of each of the two second lead wires are connected to each other, thereby the first lead wires, the second lead wires, and the light-emitting device being connected to form a loop. 
     This invention is mainly to provide an improved power cord that may independently work as lighting and may also work with various electronic devices or articles for increasing its added value so that the user does not have to deliberately conceal the power cord and can make the power cord serve as a natural ornament in a home or an office. 
     This invention is further to provide an improved power cord that may be applied by the user optionally to a required electronic device or another article without the need of purchasing extra lamp bulbs and wires. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a 3D view of a power cord according to this invention; 
         FIG. 2  is a 3D exploded view of the power cord according to this invention; 
         FIG. 3  is a schematic view illustrating the power cord in a first embodiment of this invention; and 
         FIG. 4  is a schematic view illustrating the power cord in a second embodiment of this invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Now, the present invention will be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed. 
     Firstly, referring to  FIGS. 1 and 2 , a power cord  1  according to this invention comprises a light-emitting device  10 , at least two first lead wires  20 , and at least two second lead wires  30 . 
     The light-emitting device  10  is provided with two first terminals  11  and two second terminals  12 . The light-emitting device  10  is a surface mount device LED (SMD LED). 
     One end of each of the two first lead wires  20  is connected to each of the two first terminals  11  and the other end of each of the two first lead wires  20  is electrically connected to an external power source. The power cord  1  according to this invention may work with a power source of DC 12V, DC 9V, or AC 110˜220V 
     One end of each of the two second lead wires  30  is connected to each of the second terminals  12 . 
     Each of the two first lead wires  20  is wrapped with an insulated first sleeve  21 , while each of the two second lead wires is wrapped with an insulated second sleeve  31 . 
     The first sleeves  21  are connected to each other and the second sleeves  31  are also connected to each other; thus, the first sleeves  21  and the second sleeves  31  are all formed in one, respectively. 
     Referring to  FIG. 3  as a schematic view illustrating the power cord in a first embodiment of this invention. One end of each of the first lead wires  20  (as shown in  FIG. 2 ), opposite to the other end connected to each of the first terminals  11 , as shown in  FIG. 2 , is electrically connected to a power plug  40  that is thereby plugged into a power socket  40  (not shown) for making each light-emitting device  10  illuminate; the other end of each of the second lead wires  30 , as shown in  FIG. 2 , may also be connected to an electronic device  50 , such as a charger connector or an appliance, allowing the user to simultaneously experience the sensation of visual variation and its entertainment effect while using electronic device  50 . 
     Referring to  FIG. 4  as a schematic view illustrating the power cord in a second embodiment of this invention. In this embodiment, one end of each of the first lead wires  20  (as shown in  FIG. 2 ), opposite to the other end connected to each of the first terminals  11 , as shown in  FIG. 2 , is electrically connected to an external power source (not shown); the other ends of each of the two second lead wires  30 , as shown in  FIG. 2 , are connected to each other, thereby the first lead wires  20 , the second lead wires  30 , and the light-emitting device  10  being connected to form a loop. The power cord  1  may be used in a variety of products and thus may be used as decoration lighting, and may be even made to entwine around a Christmas tree  60  depending on user demand. 
     While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.