| 摘要 |
<p>The push-button switch (13) socket is mounted on one side (41) of the circuit board (10), and its operating element (30) passes through the board (10), projects from its other side (40) and carries the push-button (33). The latter carries in turn a resilient conducting element (34, 35) resting on a conducting trace at least in its operated position. Along the axis of the resilient element (34, 35) is a glow lamp (12) with one terminal (21) in contact with a conductor trace forming a closed ring around the terminal. The lamp housing may may have a conical section to assist the correct holding of the lamp.</p> |
