| 摘要 |
PURPOSE: To provide a dust-proof structure which is capable of being manufactured and easily assembled without requiring high accuracy. CONSTITUTION: A dust-proof structure comprises a box-like case 1 provided with a display window 1c at its center, a screen 3 which hermetically closes the window 1c, and a lid 2 which seals up the opening of the case 1 and fixes a display 4b apart from the screen 3 by a prescribed space. A guide wall 1a is provided upright extending from the periphery of the display window 1c to surround the display 4b, and a gap between the guide wall la and the display 4b is hermetically sealed up with an elastic member 5. |
