Patent Publication Number: US-2010118477-A1

Title: Power supply device

Description:
BACKGROUND 
     1. Technical Field 
     The exemplary disclosure generally relates to a power supply device for a portable electronic device. 
     2. Description of Related Art 
     With the development of wireless communication and information processing technology, portable electronic devices, such as mobile telephones and personal digital assistants (PDAs) are now in widespread use. These electronic devices enable consumers to enjoy the convenience of high technology services, anytime and at virtually any location. Nowadays, the portable electronic devices with television broadcast function have become more popular. 
     However, the power capacity of the existing battery assembled within the portable electronic device cannot satisfy the long time use of the television broadcast function of the portable electronic device. It is necessary to provide an external power supply device to supply enough electric power to the portable electronic device to withstand a high level of energy consumption when using the television broadcast function. 
     Therefore, there is room for improvement within the art. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Many aspects of the exemplary power supply device can be better understood with reference to the following drawings. These drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present power supply device. Moreover, in the drawings like reference numerals designate corresponding parts throughout the several views. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment. 
         FIG. 1  shows a disassembled perspective view of a power supply device according to an exemplary embodiment, wherein a portable electronic device is assembled thereto. 
         FIG. 2  shows a perspective view of the power supply device, wherein the portable electronic device is assembled to the power supply device. 
         FIG. 3  is similar to  FIG. 2 , but viewed from another aspect. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  shows a disassembled perspective view of a power supply device  100  configured to assemble and supply electric power to a portable electronic device  200 . The portable electronic device  200  can be a mobile telephone, a personal digital assistant (PDA), etc. with television broadcast function. The portable electronic device  200  includes a main body  201  and an antenna  203  assembled to the main body  201 . The antenna  203  electrically connects with the main body  201  and is configured to search and receive TV signals. 
       FIG. 2  and  FIG. 3  show two perspective views of the power supply device  100  with the portable electronic device  200  assembled thereto for supplying electric power to the portable electric device  200 . The power supply device  100  includes a shell  10 , a cover  30 , a stopper  50 , a battery  70  and two speakers  80 . In the exemplary embodiment, the shell  10  is substantially rectangular hollow shape. The shell  10  includes a top wall  13  and a sidewall  16  perpendicular to the top wall  13 . The top wall  13  is recessed toward the sidewall  16  to form a portion of a concave assembling portion (not labeled). The concave assembling portion also communicates with the sidewall  16  and includes a first inclined bottom surface  11 , a second inclined bottom surface  12 , and two side protrusions  14  formed at two sides of the assembling portion respectively. 
     The first inclined bottom surface  11  is configured to be inclined toward the sidewall  16  to support the portable electronic device  200  assembled therein and form a better viewing angle of the portable electronic device  200 . The first inclined bottom surface  11  forms an obtuse angle of about 100 to 150 degrees with the horizontal. Preferably, the first inclined bottom surface  11  forms a substantially 120 degree angle with the horizontal plane parallel to the top wall  13 . The second inclined bottom surface  12  connects with the first inclined bottom surface  11  and is configured to be inclined in a direction opposite to/away from the first inclined bottom surface  11 . Thus, the second inclined bottom surface  12  forms a substantially V-shaped groove  112  together with the first inclined bottom surface  11 . 
     The top wall  13  further includes at least one slot  15  defined thereon surrounding the assembling portion for assembling some lighting units (e.g. background lights, fluorescent lamps, floodlights, etc.) therein, to provide light during functioning of the portable electronic device  200 . The two side protrusions  14  are hollow and configured to assemble the two speakers  80  therein. 
     The sidewall  16  defines several through holes  17  therethrough at the two ends thereof corresponding to the two protrusions  14  respectively, for transmitting sound generated by the speakers  80  out. The sidewall  16  further includes a first operating button  162  and a second operating button  164  spaced disposed at a substantially middle portion thereof. The first operating button  162  can be a power switch for turning on or turning off the power supply to the portable electronic device  200 . The second operating button  164  can be a volume adjusting button configured to adjust and control the volume of the speakers  80 . 
     The cover  30  is detachably assembled to the shell  10  for packaging or enclosing the battery  70 , the speakers  80 , etc. within the shell  10 . 
     The stopper  50  is made of elastic material such as plastic and has a shape corresponding to the V-shaped groove  112  for being fixedly assembled within the V-shaped groove  112 . The stopper  50  is configured to maintain the portable electronic device  200  in position within the assembling portion of the shell  10  to achieve a better viewing angle of the portable electronic device  200  and to prevent the portable electronic device  200  from sliding relative to the first inclined bottom surface  11 . 
     The battery  70  is assembled within the shell  10  to supply the electric power to the portable electronic device  200 . The battery  70  has a large electric power capacity and electrically connects with the portable electronic device  200  by a data wire  90 . It is to be understood that the battery  70  can be a chargeable battery, an accumulator, a storage battery, a battery pack, etc., and can be used repeatedly. The two speakers  80  are assembled within the shell  10  corresponding to the two side protrusions  14  respectively, and are configured to receive the audio signals of the portable electronic device  200  and magnify the sound of the portable electronic device  200  via the data wire  90 . 
     In use, the portable electronic device  200  is assembled to the power supply device  100  and is accommodated within the assembling portion of the shell  10 . One side of the portable electronic device  200  is leant back on/laid on the first inclined bottom surface  11  and is resisted by the stopper  50 . The portable electronic device  200  is electrically connected to the power supply device  100  by the data wire  90 . The first operating button  162  of the power supply device  100  is turned on to supply the electric power to the portable electronic device  200 , and the portable electronic device  200  is operated to use the Television broadcast function. The speakers  80  assembled within the power supply device  100  and the lighting units assembled within the slot  15  cooperatively work together to enhance the television broadcast effect. The second operating button  164  is operated to adjust the volume of the speakers  80 . 
     It is to be understood that the power supply device  100  may further includes an external plug configured to be electrically connected to an electrical socket for charging the battery  70  of the power supply device  100  or supplying the electric power. 
     The exemplary power supply device  100  is provided as an accessory attached to the portable electronic device  200  with television broadcast function, to supply enough electronic power to the portable electronic device  200 . The power supply device  100  affords/ensures the long time use need of the portable electronic device  200  efficiently. The power supply device  100  is multifunctional and is configured as a musical box and a supporting pedestal. 
     It is to be understood, however, that even through numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes can be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.