| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electronic device with an exterior cover which is thin, lightweight, high in rigidity and can be prevented from being deformed upon mold releasing. <P>SOLUTION: The electronic device 1 includes: a casing 15 having the exterior cover 22; first ribs 33 formed integrally on an inner wall surface 31 of the exterior cover 22 which face the inside of the casing 15, the first ribs being aligned to define a plurality of first sections 35; second ribs 34 formed integrally on the inner wall surface 31 and with the first ribs 33, the second ribs being aligned to define a plurality of second sections 36; a plurality of projections 38 formed integrally on the inner wall surface 31 inside each of the plurality of first sections 35 to protrude from the inner wall surface 31; and third ribs 37 which are continued to the second ribs 34 while connecting the first ribs 33 to the projections 38. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
