Air blowing device

Abstract

An air blowing device including; a fan mounted on at least one of an upper part and a lower part of a shelf; a louver having a louver board that extends in a direction intersecting with a direction of plugging in of a plug-in unit; and a louver controller to control the direction of the louver board based on a change of the mounting status of plug-in units housed in the shelf.

What is claimed is: 
     
         1 . An air blowing device comprising:
 a fan mounted on at least one of an upper part and a lower part of a shelf;   a louver having a louver board that extends in a direction intersecting with a direction of plugging in of a plug-in unit; and   a louver controller to control the direction of the louver board based on a change of a mounting status of plug-in unit housed in a shelf.   
     
     
         2 . The air blowing device according to  claim 1 , further comprising:
 a fan controller to control an increase in rotation frequency of the fan based on a change of the mounting status of plug-in units housed in the shelf.   
     
     
         3 . The air blowing device according to  claim 1 , wherein
 the louver board is divided for every slot of the plug-in units.   
     
     
         4 . The air blowing device according to  claim 1 , wherein
 the louver controller includes:
 a biasing component to bias the louver board to a usual direction; 
 a direction-changing component to change the direction of the louver board from the usual direction by moving when a plug-in unit is removed from the shelf, where the direction-changing component is provided for every slot of the plug-in units housed in the shelf; and 
 a switching component to move the direction-changing component to an allowable position where returning the direction of the louver board to the usual direction is allowed when the plug-in unit is inserted, where the switching component is provided for every slot of the plug-in units housed in the shelf. 
   
     
     
         5 . The air blowing device according to  claim 4 ,
 the direction-changing component includes;
 a U-shaped sliding member that moves in the plugging in direction when the plug-in unit is removed, and one side wall of the sliding member changes the direction of the louver board to the usual direction by pushing the louver board; and 
   the switching component includes;
 a power point projection and a working point projection which are connected to each other through a pivot that serves as a fulcrum, where the power point projection is pushed by insertion of the plug-in unit to cause the working point projection to move the sliding member to the allowable position using the pivot as a fulcrum. 
   
     
     
         6 . The air blowing device according to  claim 1 , wherein
 the louver controller includes:
 a detection component to generate an electric signal when detecting that one or more of plug-in units housed in the shelf is removed; and 
 a direction-changing component to change the direction of the louver board in response to the electric signal. 
   
     
     
         7 . The air blowing device according to  claim 6 , wherein
 the direction-changing component includes:
 a motor controller to receive the electric signal from the detection component; and 
 a motor to change the direction of the louver board when the motor is driven by the motor controller. 
   
     
     
         8 . The air blowing device according to  claim 6 , wherein
 the direction-changing component includes;
 an electromagnet controller to receive the electric signal from the detection component; and 
 an electromagnet to change the direction of the louver board when the electromagnet is driven by the electromagnet controller. 
   
     
     
         9 . The air blowing device according to  claim 6 , wherein
 the direction-changing component changes the direction of the louver board based on a wind speed sensor to detect a wind velocity within the shelf.   
     
     
         10 . The air blowing device according to  claim 1 , wherein
 the louver controller includes:
 a wind speed sensor to detect a wind velocity within the shelf; and 
 a direction-changing component to change the direction of the louver board in response to an output level of the wind speed sensor. 
   
     
     
         11 . The air blowing device according to  claim 1 , wherein
 the louver controller includes:
 a detection component to generate an electric signal when a connector of the plug-in unit is fit to a connector of a back wiring board of the shelf; and 
 a direction-changing component to change the direction of the louver board in response to the electric signal.