Electronic apparatus

Abstract

An electronic apparatus includes a back light unit that has a light source, an optical member that is arranged so as to face the irradiation direction of the light of the light source, and a spacer that supports the optical member from the light source side and is arranged in a state in which the optical member is arranged parallel to the direction of gravity or inclined with respect to the direction of gravity, and a display panel that is arranged so as to be superimposed on the optical member of the back light unit. In the back light unit, the number of spacers arranged in an upper half area of the optical member with respect to the direction of gravity is configured to be smaller than that of the spacers arranged in a lower half area of the optical member with respect to the direction of gravity.

What is claimed is: 
     
         1 . An electronic apparatus, comprising:
 a back light unit comprising:
 a light source; 
 an optical member; and 
 at least one spacer; and 
   a display panel; wherein:   the optical member has a flat shape and is disposed so as to face a direction of irradiation of light of the light source,   the at least one spacer supports the optical member from a light-source side,   the back light unit is disposed such that a surface of a light-emitting side of the optical member is parallel with a direction of gravity or inclined with respect to the direction of gravity, and   the display panel is disposed so as to lie over the surface of the light-emitting side of the optical member, through which light is emitted from the optical member of the back light unit, and   the at least one spacer is arranged only in a lower half area of the optical member.   
     
     
         2 . The electronic apparatus according to  claim 1 , wherein
 the back light unit is configured to be positioned at a reference position and to be rotated freely in at least one of a clockwise direction and a counterclockwise direction from the reference position, and   in both the reference position and a position shifted by rotation from the reference position in the clockwise direction or a position shifted by rotation from the reference position in the counterclockwise direction, the at least one spacer is arranged in the lower half area of the optical member.   
     
     
         3 . The electronic apparatus according to  claim 1 , wherein the at least one spacer is arranged in the lower half area of the optical member at a position where a flexural amount of the lower half area of the optical member is relatively large. 
     
     
         4 . The electronic apparatus according to  claim 3 , wherein the at least one spacer is arranged in the lower half area of the optical member at a position where the flexural amount of the lower half area of the optical member is maximized. 
     
     
         5 . The electronic apparatus according to  claim 1 , further comprising a supporting mechanism that supports the electronic apparatus, the supporting mechanism comprising a supporting post for disposing the back light unit such that the back light unit is parallel with the direction of gravity or inclined with respect to the direction of gravity. 
     
     
         6 . The electronic apparatus according to  claim 5 , the supporting mechanism further comprising a rotation mechanism configured to position the back light unit at a reference position and rotate the back light unit freely in at least one of a clockwise direction or a counterclockwise direction from the reference position. 
     
     
         7 . The electronic apparatus according to  claim 1 , wherein the at least one spacer comprises two or more spacers arranged in the lower half area of the optical member near a position where a flexural amount of the lower half area of the optical member is relatively large. 
     
     
         8 . An electronic apparatus comprising:
 a back light unit comprising a light source, an optical member, and a plurality of spacers, the optical member having a flat shape and being disposed so as to face a direction of irradiation of light of the light source, the plurality of spacers supporting the optical member from a light-source side, the back light unit being disposed such that a surface of a light-emitting side of the optical member is parallel with a direction of gravity or inclined with respect to the direction of gravity; and   a display panel that is disposed to lie over the surface of the light-emitting side of the optical member, through which light is emitted from the optical member of the back light unit, wherein   at least one of the plurality of spacers is arranged in an upper half area of the optical member and at least two of the plurality of spacers are arranged in a lower half area of the optical member, wherein   a number of spacers arranged in the lower half area is always larger than a number of spacers arranged in the upper half area.   
     
     
         9 . The electronic apparatus according to  claim 8 , wherein
 the back light unit is configured to be positioned at a reference position and is capable of being rotated freely in at least one of a clockwise direction and a counterclockwise direction from the reference position, and   in both the reference position and a position shifted by rotation from the reference position in the clockwise direction or a position shifted by rotation from the reference position in the counterclockwise direction, the number of spacers arranged in the lower half area is larger than the number of spacers arranged in the upper half area.   
     
     
         10 . The electronic apparatus according to  claim 8 , further comprising a supporting mechanism configured to support the electronic apparatus, the supporting mechanism further comprising a supporting post for disposing the back light unit such that the back light unit is parallel with the direction of gravity or inclined with respect to the direction of gravity. 
     
     
         11 . The electronic apparatus according to  claim 10 , the supporting mechanism further comprising a rotation mechanism configured to position the back light unit at a reference position and rotate the back light unit freely in at least one of a clockwise direction or a counterclockwise direction from the reference position.