Backpack

Abstract

This invention discloses a backpack, which comprises a bag having an accommodating space therein; a latch device disposed on both sides of the bag for opening or closing the bag; two shoulder straps respectively coupled to the upper and lower sections of both sides of the rear of the bag for carrying the bag on a user's back; two speakers, built in and exposed from both sides of the front of the bag, and a signal line for connecting the two speakers, and one of the speakers having a signal input line and a plug; thereby the two speakers are capable of producing sound by connecting the plug with a signal output socket of a portable player.

1 . A backpack, comprising: 
 a bag, having an accommodating space therein, and a latch device disposed on a side of said bag for selectively opening and closing said bag;    two shoulder straps, each having both ends respectively coupled to an upper section and a lower section on the rear side of said bag for carrying said bag on a user's back; and    two speakers, being built in both sides at the front of said bag and exposed to the exterior of said bag, and having a signal line for connecting said two speakers and one of said speaker having a signal input line and a plug;    thereby, said speakers releases sound when said plug is connected to said signal output socket of a portable player.    
   
   
       2 . The backpack of  claim 1 , further comprising a power supply device, which is in a box form and connected to a main speaker by a power supply cable, and said speaker having a built-in amplify circuit for controlling the power supply and sound volume by a control button protruded on the surface of said speaker.  
   
   
       3 . The backpack of  claim 2 , wherein said power supply is a dry battery cell acting as the power.  
   
   
       4 . The backpack of  claim 2 , wherein said power supply is disposed in said accommodating space.  
   
   
       5 . The backpack of  claim 2 , wherein said power supply is disposed in an accessory pocket disposed at the front of said bag.  
   
   
       6 . The backpack of  claim 1 , wherein said shoulder strap is adjustable.  
   
   
       7 . The backpack of  claim 1 , wherein said bag has a handle at its top.  
   
   
       8 . The backpack of  claim 1 , wherein said two speakers are speaker members mounted on both side at the bottom of said accommodating space, and a sound hole is cut from a bag cloth at the front of said bag, and a decorative panel is aligned with said speaker member to combine with said speaker member by passing a fixture through said decorative panel.  
   
   
       9 . The backpack of  claim 1 , wherein said portable player is one selected from the collection of a CD player, a MP3 player, a MD player, a walkman, and a radio.  
   
   
       10 . The backpack of  claim 1 , wherein said bag has a front cover for covering the front accessory pocket disposed thereunder.  
   
   
       11 . The backpack of  claim 10 , wherein said front cover comprises a pocket selectively opened and closed by a latch for accessing a compact disk.  
   
   
       12 . The backpack of  claim 11 , wherein said front cover has a string disposed on each side of said front cover and coupled to the rear side of said bag, and said each string has a buckle.  
   
   
       13 . The backpack of  claim 1 , wherein said bag comprises an accessory pocket selectively disposed in said accommodating space and the exterior of said bag for accommodating and fixing said portable player.  
   
   
       14 . The backpack of  claim 13 , wherein said accessory pocket is disposed on a side of the exterior of said bag and has a latch.  
   
   
       15 . The backpack of  claim 14 , wherein said accessory pocket has a wire guider for passing through said signal line and plug of said earphone.  
   
   
       16 . The backpack of  claim 15 , wherein said wire is formed by a plurality of cut lines in a radial form at the center of a film.  
   
   
       17 . The backpack of  claim 1 , wherein said bag comprises at least one binding tape selectively disposed inside and outside said bag for passing a wire.  
   
   
       18 . The backpack of  claim 17 , wherein said binding tape is an adhesive tape.  
   
   
       19 . The backpack of  claim 1 , wherein said bag has a wire guider at its top.