| 摘要 |
A frame cover and a back cover constituting a panel-shaped first casing having an image display surface include a plurality of primary engaging means provided at least in the butt-edge portions on the side to which hinges are attached and engaging between the butt edge portions; and a secondary engaging means located internally in front of a rectangular lock hole in which a movable type lock claw of a second casing is inserted and locked in order to hold the first casing, having a flexible piece extending from one of the covers toward the other thereof, and engaging the other of the covers with the free end of the flexible piece; wherein a fit state where the frame cover and the back cover are combined is established by both the engagements of the primary engaging means and the secondary engaging means, whereas the engagement of the primary engaging means is set in a releasable state by inserting a tool into the rectangular lock hole and inwardly flexing the flexible piece to release the secondary engaging means from the engagement. |
