| 摘要 |
A lamp comprises a base body ( 1 ), an annular support element ( 10 ) and an inner and outer drum optical system ( 16, 2 ). Lighting means ( 15 ) are arranged on the support element ( 10 ) in annular distribution. It comprises a drum reflector ( 17, 18 ). Each lighting means ( 15 ) radiates light radially outwardly with respect to the lamp axis ( 14 ) in a three-dimensional angular range which relative to the lamp axis ( 14 ) covers a polar angle (delta) substantially greater than a desired polar angular range (beta) in which the warning signal is to be rotated about a mean polar direction (alpha). The light radiated by the lighting means ( 15 ) either passes through the drum optical systems ( 16, 2 ) without prior incidence on the drum reflector ( 17, 18 ) or is reflected radially outwardly beforehand by the drum reflector ( 17, 18 ). Lighting means ( 15 ), drum reflector ( 17, 18 ) and drum optical systems ( 2, 16 ) are adapted to one another in such a manner that the entire light after issue from the outer drum optical system ( 2 ) is radiated within the desired polar angular range (beta) in polar direction about the mean polar direction (alpha) |
