| 摘要 |
PURPOSE: An exposed button for outdoor driving of a video phone is provided to form a U-shape flange to be exposed, to flow water along a groove of the U-shape flange to external, so as to prevent a leakage. CONSTITUTION: A lengthwise convex-concave part(4) is formed in a lower wall of an inserting unit(3) of a button(2) in an outdoor button case(1) of a doorbell or a video phone, and inserted in the inserting unit(3), to form a U-shape flange in an internal circumference of a push-button(2) elastic with an internal spring. A V-shape protuberance is formed in a lower part of the flange, to be coupled to the lengthwise convex-concave unit(4).
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