| 摘要 |
A light-emitting device is designed to cover removably a conic roadblock and is formed of a hollow conic body and a plurality of warning units. The hollow conic body is formed of an outer fabric layer and an inner fabric layer. The warning units are disposed on the outer fabric layer of the conic body. The conic body is fitt ed over the conic roadblock. The warning units are provided with a light-emitting diode to make the conic roadblock vividly visible to the operator of an approaching motor vehicle. |
