Fuel cell, electronic apparatus and camera

Abstract

A fuel cell is disclosed, which can use space in an apparatus body effectively. The fuel cell comprises a plurality of cells laminated, and a cell box housing the plurality of cells. The plurality of cells include a cell whose size in a first direction orthogonal to a lamination direction is different from that of another cell. The cell box has a shape corresponding to the size of each cell. Furthermore, an electronic apparatus is disclosed, which comprises an apparatus body including a grip portion having a protruding shape; and a fuel cell that is housed in the grip portion and comprises a cell section in which a plurality of cells are laminated in a protrusion direction of the grip portion or a direction orthogonal to the protrusion direction.

1 . A fuel cell comprising: 
 a plurality of cells, which are laminated; and    a cell box, which houses the plurality of cells,    wherein the plurality of cells include a cell whose size in a first direction orthogonal to a lamination direction of the cells is different from that of another cell, and    the cell box has a shape corresponding to the size of each cell.    
     
     
         2 . The fuel cell according to  claim 1 , wherein the plurality of cells include a group of cells whose sizes in the first direction change continuously or stepwise.  
     
     
         3 . The fuel cell according to  claim 2 , wherein the cell box has at least one of a concave shape portion and a convex shape portion, which correspond the size of the group of cells.  
     
     
         4 . The fuel cell according to  claim 2 , wherein the cell box has a curved shape portion, which corresponds the size of the group of cells.  
     
     
         5 . An electronic apparatus comprising: 
 the fuel cell according to  claim 1;  and    an apparatus body housing the fuel cell,    wherein at least a part of the cell box has a shape that follows the shape of the apparatus body.    
     
     
         6 . The electronic apparatus according to  claim 5 , wherein the apparatus body includes a grip portion having a protruding shape or a curved shape, and at least a part of the cell box has a shape that follows the shape of the grip portion.  
     
     
         7 . The electronic apparatus according to  claim 5 , wherein the electronic apparatus is a camera.  
     
     
         8 . An electronic apparatus comprising: 
 an apparatus body, which includes a grip portion having a protruding shape; and    a fuel cell, which is housed in the grip portion and comprises a cell section in which a plurality of cells are laminated in a first direction,    wherein the first direction is a protrusion direction of the grip portion or a direction orthogonal to the protrusion direction.    
     
     
         9 . The electronic apparatus according to  claim 8 , further comprises a fuel tank, which reserves fuel that is fed to the cell section, 
 wherein the fuel tank is arranged on a side closer to a bottom of the apparatus body than the cell section.    
     
     
         10 . The electronic apparatus according to  claim 9 , further comprises a fuel feed member, which feeds the fuel to the cell section from the fuel tank, 
 wherein the fuel feed member is connected to a substantial center of the cell section in the first direction.    
     
     
         11 . The electronic apparatus according to  claim 8 , wherein the electronic apparatus is a camera.  
     
     
         12 . A camera comprising: 
 an apparatus body, which is constituted by a first body and a second body, the first body holding an image-pickup device, and the second body constituting a grip portion that has a shape protruding with respect to the first body; and    a fuel cell, which comprises a cell section and a fuel tank reserving fuel that is fed to the cell section,    wherein the cell section is arranged in the second body, and the fuel tank is arranged in the first and second bodies.    
     
     
         13 . The camera according to  claim 12 , wherein, in the first body, a part of the fuel tank is arranged in a region on a side closer to a bottom of the first body than an optical path toward the image-pickup device.  
     
     
         14 . The camera according to  claim 12 , further comprising a mirror box holding a mirror movable with respect to an optical path toward the image-pickup device, 
 wherein a part of the fuel tank is arranged between a bottom of the first body and the mirror box.    
     
     
         15 . The camera according to  claim 14 , further comprising a focus detection unit, which detects a focus state of an image-taking optical system using light reflected at the mirror, 
 wherein the focus detection unit is arranged between the bottom of the first body and the mirror box.    
     
     
         16 . A camera comprising: 
 a camera body, which holds an image-pickup device; and    a cell housing member, which houses a fuel cell and is detachably attached to the camera body,    wherein the cell housing member constitutes a grip portion of the camera by being attached to the camera.    
     
     
         17 . The camera according to  claim 16 , wherein the fuel cell includes a cell section and a fuel tank reserving fuel that is fed to the cell section, and 
 the cell housing member houses the fuel tank so that the fuel tank can be ejected therefrom.