US Patent 7681516 Light-emitting horn

A horn includes a base adapted to be mounted to a bar, and a sound-generating unit. The base includes a support member and an elastic connecting member. The support member has a bottom portion adapted to be placed adjacent to the bar, a top portion extending upwardly from the bottom portion, and a hook protruding from the bottom portion. The elastic connecting member has an annular portion fittingly sleeved over the bottom portion of the support member, and a clamping portion extending from the annular portion and adapted to wrap around the bar and be releasably hooked onto the hook. The sound-generating unit includes a hollow horn body sleeved on the top portion of the support member, and a reed member disposed in the horn body and having opposite ends in fluid communication respectively with the air inside and the air outside the horn body.