| 摘要 |
<p>PURPOSE:To let a driver of a following vehicle visually know the operation state of a preceding vehicle and also let the nearly people know a crane in operation. CONSTITUTION:A bracket 16 rotatable is installed on top of a support member 13 fixed on one side of a vehicle 10. A boom 17 with its base end pivotally supported on the bracket 16 is disposed to turn up and down. The tip of the boom 17 is installed in a receiving member 18 erected on the other side of the vehicle 10, opposite to the support member 13, so that the receiving member 18 holds the tip of the boom 17. Lamps 32 are attached on the boom 17. Of the lamps 32, an alarm lamp 33 lights up when a crane 12 is in use and a high mount stop lamp 34 lights up when the vehicle is braked.</p> |
