| 摘要 |
<p>The invention provides signalling apparatus comprising: a power source (15), a light (2) and an inertial switch (3), operably connected between the power source and the light. The use of a pendulum-type inertial switch provides axis-dependent immunity from unintended activation. Connection means (13) may be provided to enable the apparatus to be secured, in use, to a user's hand or wrist, and maintaining it, in use, in a fixed position thereon. The invention has particular application for use as an indicator for cyclists.</p> |
