Patent Publication Number: US-2010118551-A1

Title: Illuminating device and light emitting unit

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an illuminating device; and especially to an illuminating device with high superiority of production, the illuminating device can render an illuminating to get elongated life of use. 
     2. Description of the Prior Art 
     A normal conventional illuminating device has a plug-in pin of a light emitting unit (such as an LED) connected by welding with an electric power line, in order to give the light emitting unit electric power source to emit light; however in use, changing of the light emitting unit is quite in convenient, there have been illuminating devices developed in the markets for the convenience of detaching and changing the light emitting unit without welding. 
     Such a illuminating device is provided in a lampshade having a receiving space with an electrically connecting device, the electrically connecting device has a light emitting unit, and is provided with a pair of receiving holes each having therein an electrically conductive member, one end of each electrically conductive member is connected with an electric power line, while the other end is used for insertion connecting of a plug-in pin of the light emitting unit, in order that the electric power line can provide electric power for the light emitting unit via the electrically conductive member. 
     The electrically connecting device and the electrically conductive member are provided radially with a plurality of fixing holes mutually opposite to, being used for screwing in of screws to fix the electric power line, the plug-in pin of the light emitting unit and the electrically conductive member onto the electrically connecting device. 
     The illuminating device can have the light emitting unit changed conveniently, and can be electrically connected with the electric power line without welding. However, the plug-in pin of the light emitting unit used on the illuminating device is in a linear shape, a rotative screw is needed to clamp the plug-in pins in installing, thereby when in locking a second one of the plug-in pins after the first one of the plug-in pins is locked, an outwardly stretching deforming force will be created in locking the second plug-in pin because the first plug-in pin has been locked, so that the plug-in pins of the light emitting unit are subjected to deforming and breaking when being borne with a force, and the light emitting unit is damaged and discarded. Meantime problems of assembling and repairing are induced. 
     In view of these, the inventor of the present invention studied and developed an illuminating device and a light emitting unit that can avoid the defect of easy deforming and breaking of the plug-in pins of the light emitting unit when in assembling, thereby superiority of production can be effectively increased, and the life of use of the light emitting unit can be elongated. 
     SUMMARY OF THE INVENTION 
     The primary object of the present invention is to provide an illuminating device and a light emitting unit that is easy for assembling and can avoid the defect of easy deforming and breaking of plug-in pins of the light emitting unit when in assembling, thereby superiority of production can be effectively increased, and the life of use of the light emitting unit can be elongated. 
     For achieving the above object, the present invention is composed of a lampshade, an electric connector and a light emitting unit, in which the lampshade has therein a receiving space for receiving the light emitting unit, and for fixing the electric connector on its rear side to connect a pair of electric power lines, the present invention is characterized in that: 
     The light emitting unit is composed of a light emitting part and two plug-in pins which includes a first plug-in pin and a second plug-in pin, a front half part of each of the first and the second plug-in pins is an arched elastic buffering portion, and a rear half part of each of the plug-in pins is a fixing portion for fixing. The fixing portion is electrically connected with the electric connector, in order that the electric connector can provide electric power for light emitting of a light emitting part via the first and the second plug-in pins; The electric connector is provided in opposition to the light emitting unit with an insertion connecting portion for insertion of the first and the second plug-in pins, and is provided on its two lateral sides in opposition to the fixing portions of the plug-in pins with fixing holes for inserting and fixing of screws therein. 
     When the screws are used to fix the first plug-in pin, by virtue that they are rotatively screwed in, they render the first plug-in pin to bear outwardly stretching deforming forces, this will change the original angular of the first plug-in pin relative to the light emitting part, meantime will change the angle between the first and the second plug-in pins. 
     However, by virtue that the elastic buffering portions of the first and the second plug-in pins are each in an arch shape and are elastic, when in fixing the second plug-in pin, the elastic buffering portions of the first and the second plug-in pins can absorb the outwardly stretching deforming forces exerted by the screws on the second plug-in pin being fixed, so that both the first and the second plug-in pin will not be deformed and broken. 
     When in practicing, the lampshade is composed of an upper cover, a bottom seat and a connecting member for fixing the upper cover and the bottom seat, the upper cover and the bottom seat is formed therebetween a receiving space for receiving the light emitting unit; the upper cover is provided on its front side with a front engaging portion, and on its rear side with a rear engaging portion, and at its center with a transparent sheet for radiating out of light from the light emitting unit. 
     The bottom seat has a lug extending out of the front side of it, the lug is excavated to form therein a screw hole for screwing in of a screw, the bottom seat is excavated on its rear side to form a through hole, the upper edge of the rear side has a rear engaging piece extending upwards and is curved for pressing downwards the rear engaging portion on the upper cover to fix the upper cover onto the bottom seat. 
     The connecting member has a curved shape and is elastic, one end of it is used for engaging an engaging portion below the lug, the other end of it is a pressing portion for press engaging the front engaging portion of the upper cover, the pressing portion is provided with a screw hole for screwing in of a screw, the screw hole is in cooperation with the screw hole on the lug, thereby the screw can lock the upper cover and the bottom seat together. 
     The electric connector, in addition to being provided on its front side with the insertion connecting portion for inserting of the light emitting unit, and being provided on its two lateral sides with the fixing hole for locking the light emitting unit with the abovementioned screws, is provided on its top with a fixedly connecting portion, the fixedly connecting portion has a fixedly connecting hole for locking therein with a screw, hence the connector can be fixed in the through hole of the bottom seat. And more, the connector is provided on the rear of the insertion connecting portion with a pair of receiving holes, each receiving hole is provided with an electrically conductive member, each electrically conductive member is electrically connected with an electric power line, and one plug-in pin of the light emitting unit, so that the electric power line can provide electric power for light emitting of the light emitting unit. When in practicing, the electrically conductive members each can have a cylindrical shape, the elastic buffering portions of the first and the second plug-in pins on the light emitting unit can be in the shape of “U” or “V”. 
     As compared with the conventional technique, designing of the elastic buffering portions on the light emitting unit of the present invention can absorb the outwardly stretching deforming forces exerted by screws in fixing the first and the second plug-in pins, this can avoid breaking of the first and the second plug-in pins in bearing forces, thus superiority of production can be effectively increased, rate for repairing can be lowered, and the life of use of the light emitting unit can be elongated. And designing of connecting by engaging on the housing of the lampshade and the bottom seat of the lampshade even allows fast assembling and disassembling, thus time for assembling and repairing can be reduced, and convenience of use can be increased. 
     The present invention will be apparent after reading the detailed description of the preferred embodiment thereof in reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of the present invention; 
         FIG. 2  is an exploded perspective view of the present invention; 
         FIG. 3  is an exploded perspective view showing a light emitting unit and an electric connector; 
         FIG. 4  is a schematic view showing insertion connecting of the light emitting unit with the electric connector; 
         FIG. 5  is a partial sectional view of the present invention; 
         FIG. 6  is another partial sectional view of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring firstly to  FIGS. 1-3 , an illuminating device of the present invention is composed of a lampshade  10 , an electric connector  20  and a light emitting unit  30 , in which the lampshade  10  has therein a receiving space for receiving the light emitting unit  30 , the light emitting unit  30  has two plug-in pins  32   a,    32   b  electrically connected with the electric connector  20 ; the front end of the electric connector  20  is fixed on the rear side of the lampshade  10 , and the rear end of the electric connector  20  is connected with a pair of electric power lines  40 , so that the light emitting unit  30  can be connected to an electric power supply via the electric connector  20 . 
     Wherein, as shown in  FIGS. 2-4 , the light emitting unit  30  is composed of a light emitting part  31  and the two plug-in pins which include a first and a second plug-in pin  32   a,    32   b,  a front half part of each of the first and the second plug-in pins  32   a,    32   b  is an arched elastic buffering portion  33 , and a rear half part of each of the plug-in pins  32   a,    32   b  is a fixing portion  34  for fixing. The fixing portion  34  is electrically connected with the electric connector  20 , in order that the electric connector  20  can provide electric power for light emitting of the light emitting part  31  via the first and the second plug-in pins  32   a,    32   b;  The electric connector  20  is provided in opposition to the light emitting unit  30  with an insertion connecting portion  21  for insertion of the first and the second plug-in pins  32   a,    32   b,  and is provided on its two lateral sides with fixing holes  22  being provided on the fixing portions  34  respectively of the first and the second plug-in pins  32   a,    32   b  for inserting and fixing of screws  221  therein. 
     As shown in  FIGS. 5 and 6 , when the screws  221  are used to fix the first plug-in pin  32   a,  by virtue that they are screwed in by the mode of rotating, they render the first plug-in pin  32   a  will to bear outwardly stretching deforming forces, this will change the original angular of the first plug-in pin  32   a  relative to the light emitting part  31 , meantime will change the angle between the first and the second plug-in pins  32   a,    32   b.    
     However, by virtue that the elastic buffering portions  33  of the first and the second plug-in pins  32   a,    32   b  are each in an arch shape and are elastic, when in fixing the second plug-in pin  32   b,  the elastic buffering portions  33  of the first and the second plug-in pins  32   a,    32   b  can absorb the outwardly stretching deforming forces exerted by the screws  221  on the second plug-in pin  32   b  being fixed, so that the second plug-in pin  32   b  will not be deformed and broken. 
     When in practicing, as shown in FIGS.  2 - 4 ,the lampshade  10  is composed of an upper cover  110 , a bottom seat  120  and a connecting member  130  for fixing the upper cover  110  and the bottom seat  120 , the upper cover  110  and the bottom seat  120  is formed therebetween a receiving space for receiving the light emitting unit  30 ; the upper cover  110  is provided on its front side with a front engaging portion  111 , and on its rear side with a rear engaging portion  112 , and at its center with a transparent sheet  113  for radiating out of light from the light emitting unit  30 . 
     The bottom seat  120  has a lug  121  extending out of the front side of it, the lug  121  is excavated to form therein a screw hole  122  for screwing in of a screw, the bottom seat  120  is excavated on its rear side to form a through hole  123 , the upper edge of the rear side has a rear engaging piece  124  extending upwards and is curved for pressing downwards the rear engaging portion  112  on the upper cover  110  to fix the upper cover  110  onto the bottom seat  120 . 
     The connecting member  130  has a curved shape and is elastic, one end of it is used for engaging an engaging portion  131  below the lug  121 , the other end of it is a pressing portion  132  for press engaging the front engaging portion  111  of the upper cover  110 , the pressing portion  132  is provided with a screw hole  133  for screwing in of a screw, the screw hole  133  is in cooperation with the screw hole  121  on the lug  133 , thereby the screw can lock the upper cover  110  and the bottom seat  120  together. 
     The electric connector  20 , in addition to being provided on its front side with the insertion connecting portion  21  for inserting of the light emitting unit  30 , and being provided on its two lateral sides with the fixing hole  22  for locking the light emitting unit  30  with the screws  221 , is provided on its top with a fixedly connecting portion  23 , the fixedly connecting portion  23  has a fixedly connecting hole  24  for locking therein with a screw, hence the electric connector  20  can be fixed in the through hole  123  of the bottom seat  120 . And more, the electric connector  20  is provided on the rear of the insertion connecting portion  21  with a pair of receiving holes  25 , each receiving hole  25  is provided with an electrically conductive member  251 , each electrically conductive member  251  is electrically connected with an electric power line  40 , and one plug-in pin of the light emitting unit  30 , so that the electric power line  40  can provide electric power for light emitting of the light emitting unit  30 . When in practicing, the electrically conductive members  251  each can have a cylindrical shape, the elastic buffering portions  33  of the first and the second plug-in pins  32   a,    32   b  on the light emitting unit  30  can be in the shape of “U” or “V”. 
     The names of the members and the drawings for the present invention are only for illustrating preferred embodiments of the present invention, and not for giving any limitation to the scope of the present invention. It will be apparent to those skilled in this art that various equivalent modifications or changes without departing from the spirit, scope and characteristic of this invention shall fall within the scope of the appended claims and are intended to form part of this invention.