Patent Publication Number: US-8994275-B2

Title: Non-contact and non-disposable electric induction LED lamp

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to a non-contact and non-disposable electric induction LED lamp. 
     2. Description of the Prior Art 
     The inventor of this invention previously devised various kinds of non-disposable LED lamps for improving the drawbacks of a conventional LED lamp that a whole set of the conventional LED lamp must be eliminated and replaced with a new one so long as a certain component of the LED lamp is damaged. An electric bulb-shaped non-disposable LED lamp, as shown in  FIG. 1 , includes a base  1  provided thereon with a power module  2  connected with a first connector  3 . A luminous module  4  is assembled on the base  1  and provided with a second connector  5  to be assembled with the first connector  3 , and the second connector  5  is connected with an LED circuit board  6 . By so designing, only the base  1  or the luminous module  4  needs to be replaced singly in accordance with the location where the component is damaged. For instance, when the LED circuit board  6  is damaged, only the luminous module  4  needs to be replaced, unnecessary to eliminate and replace a whole set of the non-disposable LED lamp, thus attaining effects of lowering selling price, elevating economic value and environmental protection. 
     Although foresaid non-disposable LED lamps are widely known and greatly loved by consumers after being launched to the markets, yet the inventor of this invention found that since the power module  2  is to have electricity transmitted to the luminous module  4  via the this first connector  3  and the second connector  5  that are combined together; therefore, water vapor and dust are apt to get into the power module  2  along the first connector  3  and also into the luminous module  4  along the second connector  5 , thus shortening service life of both the power module  2  and luminous module  4 . In addition, to replace the base  1  or the luminous module  4  and recombine them together, a user has to make the first connector  3  aligned to the second connector  5 , resulting in much inconvenience. Therefore, finding the defects of foresaid non-disposable LED lamp and adhering to the spirit of endeavoring to do everything better, the inventor of this invention think that it is really necessary to ameliorate the conventional non-disposable LED lamp. 
     SUMMARY OF THE INVENTION 
     The objective of this invention is to offer a non-contact and non-disposable electric induction LED lamp, able to have the electricity of a power source transmitted to a luminous-radiating unit in a non-contact mode to enable an LED module of the luminous-radiating unit to emit light. 
     The non-contact and non-disposable electric induction LED lamp in the present invention includes a power source and a luminous-radiating unit. The power source is formed with a power source module electrically connected with a first electric induction plate. The luminous-radiating unit to be combined and fixed together with the power source is provided with a second electric induction plate corresponding with the first electric induction plate and electrically connected with an LED module. 
     The non-contact and non-disposable electric induction LED lamp of this invention is to have the electricity of the power source transmitted to the luminous-radiating unit via electromagnetic induction produced between the first and the second electric induction plates, that is, transmission of electricity is carried out in a non-contact mode. Therefore, no outer metallic contact needs to be provided and hence, the power source and the luminous-radiating unit can be sealed completely, attaining waterproof and dustproof effects, facilitating the LED lamp to be partially replaced and reducing electronic waste. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       This invention will be better understood by referring to the accompanying drawings, wherein: 
         FIG. 1  is a schematic view of a conventional non-disposable LED lamp; 
         FIG. 2  is a perspective view of a first preferred embodiment of a non-contact and non-disposable electric induction LED lamp in the present invention; 
         FIG. 3  is an exploded perspective view of the first preferred embodiment of the non-contact and non-disposable electric induction LED lamp in the present invention; 
         FIG. 4  is a cross-sectional view of the first preferred embodiment of the non-contact and non-disposable electric induction LED lamp in the present invention; 
         FIG. 5  is a cross-sectional view of the first preferred embodiment of the non-contact and non-disposable electric induction LED lamp in a using condition in the present invention; 
         FIG. 6  is an exploded perspective view of a second preferred embodiment of a non-contact and non-disposable electric induction LED lamp in the present invention; and 
         FIG. 7  is a cross-sectional view of a third preferred embodiment of a non-contact and non-disposable electric induction LED lamp in the present invention; 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     A non-contact and non-disposable electric induction LED lamp  100  in the present invention can be bulb-shaped, disk lamp-shaped or fluorescent lamp-shaped. A first preferred embodiment of a bulb-shaped non-contact and non-disposable electric induction LED lamp  100  in the present invention, as shown in  FIGS. 2 ,  3  and  4 , includes a power source  10  and a luminous-radiating unit  20  as main components combined together. 
     The power source portion  10  is formed with a base  11  and provided with a first combination member  12 , which is an engage groove in this preferred embodiment. The base  11  has one side provided with an E27 electric adapter  13 , and a power source module  14  electrically connected with the electric adapter  13  is installed on the base  11 . The base  11  has another side set with a first electric induction plate  15  received therein with a first induction coil  16  and electrically connected with the power source module  14 . 
     The luminous-radiating unit  20  is disposed with a heat-dissipating body  21  composed of multilayer circular radiating fins, and provided with a second combination portion  22  to be combined with the first combination portion  12  to assemble and fix the luminous-radiating portion  20  together with the power source  10 . In this preferred embodiment, the second combination portion  22  is an engage projection so that the luminous-radiating unit  20  can be firmly fixed with the power source  10  in a mode of mutual engagement. Further, the heat-dissipating body  21  has one side that faces the base  1  provided with a second electric induction plate  23  having a second induction coil  24  installed therein, letting the second electric induction plate  23  of the luminous-radiating unit  20  correspond with the first electric induction plate  15  of the power source  10 . An LED module  25  is mounted on the luminous-radiating unit  20  and electrically connected with the second electric induction plate  23 , and the luminous-radiating unit  20  is further provided with a lamp shade  26  to be covered at the outer side of the LED module  25 . 
     In using, referring to  FIG. 5 , firstly, the luminous-radiating portion  20  is fixed with the power source  10  via mutual engagement of the first combination portion  12  with the second combination portion  22  to finish assembly of the non-contact and non-disposable electric induction LED lamp  100 . Then, the electric adapter  13  is combined with an external electric socket  200  to enable the external alternating current offered by the electric socket  200  to be transmitted to the power source module  14  via the electric adapter  13 . Simultaneously, the alternating current will be converted into direct current by the power source module  14  and transmitted to the first electric induction plate  15  to let the first induction coil  16  in the first electric induction plate  15  convert the direct current into magnetic force. Meanwhile, due to Faraday&#39;s electromagnetic induction principle, the second induction coil  24  in the second electric induction plate  23  will be excited by the magnetic force produced by the first induction coil  16  to generate electricity to be transmitted to the LED module  25  to drive the LED module  25  to emit light. By so designing, when certain component of the LED lamp  100  is damaged, only the power source  10  or the luminous-radiating unit  20  needs to be replaced singly, unnecessary to eliminate and replace the whole set of the LED lamp, able to lower selling price, enhance economic value and having an effect of environmental protection. In addition, the electricity of the power source  10  is transmitted to the luminous-radiating portion  20  by electromagnetic induction between the first electric induction plate  15  and the second electric induction plate  23 , that is, transmission of electricity is carried out in a non-contact mode; therefore, no outer metallic contact needs to be provided to enable the power source  10  and the luminous-radiating portion  20  to be sealed completely, thus achieving waterproof and dustproof effects and facilitating the LED lamp  100  to be replaced. 
     Moreover, since the electricity of the power source  10  is transmitted to the luminous-radiating unit  20  in a non-contact mode; therefore, the luminous-radiating unit  20  can be replaced with a luminous-radiating unit of different specifications according to needs in use. For instance, a daylight-colored luminous-radiating unit  20  can be replaced with an electric bulb-colored luminous-radiating unit  20 . 
     A second and a third preferred embodiments of a non-contact and non-disposable electric induction LED lamp  100 , as shown in  FIGS. 6 and 7 , has almost the same structure as that described in the first preferred embodiment, except that the LED lamp  100  is disc lamp-shaped, as shown in  FIG. 6  or fluorescent lamp-shaped, as shown in  FIG. 7 , and the first combination portion  12  is a fastening slot and the second combination portion  22  is a fastening block. Thus, the luminous-radiating unit  20  can be fixed with the power source  10  in a mode of clasping, able to attain the same effect as that described in the first preferred embodiment. 
     While the preferred embodiments of the invention have been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.