US2002121357A1PendingUtilityA1

Optical unit for a motor vehicle

37
Priority: Feb 28, 2001Filed: Feb 28, 2002Published: Sep 5, 2002
Est. expiryFeb 28, 2021(expired)· nominal 20-yr term from priority
Inventors:Sebastien BerneCaroline Riviere
F21S 45/43F01P 1/06F21S 45/30F21V 29/67F21S 45/60F21S 45/33
37
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Claims

Abstract

This front unit for a motor vehicle comprises: at least one optical unit ( 2 ) which comprises a casing ( 7 ) provided with inlet and outlet openings ( 12, 13 ) for a flow of air sweeping the inside of the casing, a heat exchanger 3 , and a fan ( 4 ) for producing an airstream passing through the heat exchanger. The front unit comprises a duct ( 15 ), a first end ( 16 ) of which is connected to an opening ( 12 ) in the casing ( 7 ) of the optical unit ( 2 ) and a second end ( 19 ) of which is arranged in the vicinity of the fan ( 4 ) so that the fan produces the flow of air for sweeping the inside of the casing ( 7 ).

Claims

exact text as granted — not AI-modified
1 . Front unit ( 1 ) for a motor vehicle, of the type comprising: 
 at least one optical unit ( 2 ) which comprises a casing ( 7 ) provided with inlet and outlet openings ( 12 ,  13 ) for a flow of air ( 23 ;  33 ) sweeping the inside of the casing,    a heat exchanger ( 3 ), and    a fan ( 4 ) for producing an airstream ( 21 ) passing through the heat exchanger,    characterized in that the front unit comprises a duct ( 15 ), a first end ( 16 ) of which is connected to an opening ( 12 ) in the casing ( 7 ) of the optical unit ( 2 ) and a second end ( 19 ) of which is arranged in the vicinity of the fan ( 4 ) so that the fan produces the flow of air for sweeping the inside of the casing ( 7 ), and in that it comprises a shroud ( 14 ) for channelling the airstream between the fan ( 4 ) and the heat exchanger ( 3 ), the second end of the duct ( 15 ) being connected to the shroud.    
     
     
         2 . Front unit according to  claim 1 , characterized in that it comprises a Venturi device ( 29 ) which is arranged in the vicinity of the fan ( 4 ) and which comprises a divergent main passage ( 30 ) and an auxiliary passage ( 31 ) connecting the main passage and the second end of the duct ( 15 ).  
     
     
         3 . Front unit according to  claim 2 , characterized in that the shroud ( 14 ) forms the main passage ( 30 ) of the Venturi device ( 29 ).  
     
     
         4 . Front unit according to  claim 2 , characterized in that the main passage ( 30 ) diverges in the direction of circulation of the airstream ( 21 ) in order to bring about the suction, by way of the second end ( 19 ) of the duct, of the flow of air for sweeping the inside of the casing.  
     
     
         5 . Front unit according to  claim 3 , characterized in that the main passage ( 30 ) diverges in the direction of circulation of the airstream ( 21 ) in order to bring about the suction, by way of the second end ( 19 ) of the duct, of the flow of air for sweeping the inside of the casing.  
     
     
         6 . Front unit according to  claim 1 , characterized in that the fan ( 4 ) is to be located behind the heat exchanger ( 3 ) when the front unit ( 1 ) is mounted on the motor vehicle.  
     
     
         7 . Front unit according to  claim 2 , characterized in that the fan ( 4 ) is to be located behind the heat exchanger ( 3 ) when the front unit ( 1 ) is mounted on the motor vehicle.  
     
     
         8 . Front unit according to  claim 3 , characterized in that the fan ( 4 ) is to be located behind the heat exchanger ( 3 ) when the front unit ( 1 ) is mounted on the motor vehicle.  
     
     
         9 . Front unit according to  claim 4 , characterized in that the fan ( 4 ) is to be located behind the heat exchanger ( 3 ) when the front unit ( 1 ) is mounted on the motor vehicle.  
     
     
         10 . Front unit according to  claim 1 , characterized in that the fan ( 4 ) is to be located in front of the heat exchanger ( 3 ) when the front unit ( 1 ) is mounted on the motor vehicle.  
     
     
         11 . Front unit according to  claim 2 , characterized in that the fan ( 4 ) is to be located in front of the heat exchanger ( 3 ) when the front unit ( 1 ) is mounted on the motor vehicle.  
     
     
         12 . Front unit according to  claim 3 , characterized in that the fan ( 4 ) is to be located in front of the heat exchanger ( 3 ) when the front unit ( 1 ) is mounted on the motor vehicle.  
     
     
         13 . Front unit according to  claim 4 , characterized in that the fan ( 4 ) is to be located in front of the heat exchanger ( 3 ) when the front unit ( 1 ) is mounted on the motor vehicle.  
     
     
         14 . Motor vehicle, characterized in that it includes a front unit according to  claim 1 .  
     
     
         15 . Motor vehicle, characterized in that it includes a front unit according to  claim 2 .  
     
     
         16 . Motor vehicle, characterized in that it includes a front unit according to  claim 3 .  
     
     
         17 . Motor vehicle, characterized in that it includes a front unit according to  claim 4 .  
     
     
         18 . Motor vehicle, characterized in that it includes a front unit according to  claim 6 .  
     
     
         19 . Motor vehicle, characterized in that it includes a front unit according to claim  10 .

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