Car seat head rest with built-in screen

Abstract

A car seat head rest, which is adapted for mounting on a car seat having two spaced apart retention slots, includes a head pillow, a display screen supported at a rear side of the head pillow, two sliding panels supported in the head pillow in a slidably movable manner, two supporting arms downwardly and parallelly extended from the sliding panels respectively to define an engaging distance, a driving gear defining a teething circumferential edge engaging with teething edges of the sliding panels, and an adjuster rotatably provided at the head pillow. When the adjuster is rotatably actuated, the driving gear is driven to rotate, such that the sliding panels are correspondingly slid with each other in a synchronized manner to selectively adjust the engaging distance between the supporting arms.

What is claimed is: 
     
         1 . A car seat head rest for mounting on a car seat having two spaced apart retention slots, comprising:
 a head pillow having a rear side, a bottom side and an interior cavity;   a display screen supported at said rear side of said head pillow;   two sliding panels supported in said interior cavity of said head pillow in a slidably movable manner, wherein each of said sliding panels has a teething edge;   two supporting arms downwardly and parallelly extended from said sliding panels respectively through said bottom side of said head pillow to define an engaging distance between said two supporting arms, wherein when said sliding panels are slid, said supporting arms are moved correspondingly to selectively adjust said engaging distance between said supporting arms;   a driving gear defining a teething circumferential edge engaging with said teething edge of said sliding panels, wherein when said driving gear is rotated, said sliding panels are correspondingly slid with each other in a synchronized manner; and   an adjuster which is arranged that when said adjuster is rotatably actuated, said driving gear is driven to rotate, such that said sliding panels are corresponding slid with each other to selectively adjust said engaging distance between said supporting arms.   
     
     
         2 . The car seat head rest, as recited in  claim 1 , wherein said teething circumferential edge of said driving gear has a portion engaged with said teething edge of one of said sliding panels and an opposed portion engaged with said teething edge of another said sliding panels, such that when said driving gear is driven to rotate, said sliding panels are slid in a synchronized manner to adjust said engaging distance between said supporting arms. 
     
     
         3 . The car seat head rest, as recited in  claim 1 , wherein said teething edges of said sliding panels are facing to each other. 
     
     
         4 . The car seat head rest, as recited in  claim 2 , wherein said teething edges of said sliding panels are facing to each other. 
     
     
         5 . The car seat head rest, as recited in  claim 1 , wherein said teething circumferential edge of said driving gear is tangently engaged with said teething edge of each of said sliding panels. 
     
     
         6 . The car seat head rest, as recited in  claim 4 , wherein said teething circumferential edge of said driving gear is tangently engaged with said teething edge of each of said sliding panels. 
     
     
         7 . The car seat head rest, as recited in  claim 1 , wherein upper end portions of said supporting arms are affixed to said sliding panels respectively, such that when said sliding panels are slid in a synchronized manner, said supporting arms are correspondingly moved to adjust said engaging distance therebetween. 
     
     
         8 . The car seat head rest, as recited in  claim 6 , wherein upper end portions of said supporting arms are affixed to said sliding panels respectively, such that when said sliding panels are slid in a synchronized manner, said supporting arms are correspondingly moved to adjust said engaging distance therebetween. 
     
     
         9 . The car seat head rest, as recited in  claim 7 , wherein said upper end portions of said supporting arms are pivotally coupling with said sliding panels at two outer sides thereof respectively to selectively adjust a tilt angle of said head pillow with respect to said car seat. 
     
     
         10 . The car seat head rest, as recited in  claim 8 , wherein said upper end portions of said supporting arms are pivotally coupling with said sliding panels at two outer sides thereof respectively to selectively adjust a tilt angle of said head pillow with respect to said car seat. 
     
     
         11 . The car seat head rest, as recited in  claim 1 , wherein said adjuster comprises a manual turner having a manipulating portion extending out of said interior cavity of said head pillow through said bottom side thereof. 
     
     
         12 . The car seat head rest, as recited in  claim 10 , wherein said adjuster comprises a manual turner having a manipulating portion extending out of said interior cavity of said head pillow through said bottom side thereof. 
     
     
         13 . The car seat head rest, as recited in  claim 11 , further comprising a bottom enclosing cover mounted at said bottom side of said head pillow to enclose said interior cavity thereof, wherein said enclosing cover has a tuner opening for said manipulating portion of said adjuster protruding therefrom, such that said adjuster is adapted to be rotatably actuated, wherein said enclosing cover further has two elongated arm openings for said supporting arms extending out of said bottom side of said head pillow through said arm opening respectively. 
     
     
         14 . The car seat head rest, as recited in  claim 12 , further comprising a bottom enclosing cover mounted at said bottom side of said head pillow to enclose said interior cavity thereof, wherein said enclosing cover has a tuner opening for said manipulating portion of said adjuster protruding therefrom, such that said adjuster is adapted to be rotatably actuated, wherein said enclosing cover further has two elongated arm openings for said supporting arms extending out of said bottom side of said head pillow through said arm opening respectively. 
     
     
         15 . The car seat head rest, as recited in  claim 1 , further comprising a base housing supported within said interior cavity of said head pillow to rigidly support said display screen at said rear side of said head pillow, wherein said sliding panels are supported between a base wall of said base housing and said display screen. 
     
     
         16 . The car seat head rest, as recited in  claim 14 , further comprising a base housing supported within said interior cavity of said head pillow to rigidly support said display screen at said rear side of said head pillow, wherein said sliding panels are supported between a base wall of said base housing and said display screen. 
     
     
         17 . The car seat head rest, as recited in  claim 1 , further comprising a supporting bracket supported in said interior cavity of said head pillow to receive said sliding panels in said supporting bracket, and a holding bracket affixed to said supporting bracket to support said display screen at said rear side of said head pillow. 
     
     
         18 . The car seat head rest, as recited in  claim 14 , further comprising a supporting bracket supported in said interior cavity of said head pillow to receive said sliding panels in said supporting bracket, and a holding bracket affixed to said supporting bracket to support said display screen at said rear side of said head pillow. 
     
     
         19 . The car seat head rest, as recited in  claim 17 , further comprising an entertainment unit detachably received with said holding bracket, wherein said entertainment unit comprises a disc-media reader electrically linked to said display screen to form a portable media player to detachably supported by said holding bracket at a position that said display screen is supported at said rear side of said head pillow. 
     
     
         20 . The car seat head rest, as recited in  claim 18 , further comprising an entertainment unit detachably received with said holding bracket, wherein said entertainment unit comprises a disc-media reader electrically linked to said display screen to form a portable media player to detachably supported by said holding bracket at a position that said display screen is supported at said rear side of said head pillow. 
     
     
         21 . The car seat head rest, as recited in  claim 1 , wherein at least one of said supporting arms is a hollow arm that a communication cable of said display screen is extended through one of said supporting arms so as to protectively conceal said communication cable within said respective supporting arm. 
     
     
         22 . The car seat head rest, as recited in  claim 16 , wherein at least one of said supporting arms is a hollow arm that a communication cable of said display screen is extended through one of said supporting arms so as to protectively conceal said communication cable within said respective supporting arm. 
     
     
         23 . The car seat head rest, as recited in  claim 20 , wherein at least one of said supporting arms is a hollow arm that a communication cable of said display screen is extended through one of said supporting arms so as to protectively conceal said communication cable within said respective supporting arm.