| 摘要 |
A lamp for automotive vehicle front lighting is described. The lamp (10) comprises a base (12) for mechanical and electrical connection to an automotive headlight (50) and a burner (14) fixed to the base (12). The burner (14) comprises an enclosed transparent vessel (22). A first and a second filament (34, 36) are arranged within the vessel (22). A baffle (40) is arranged proximate to the first filament (34) to shield the second filament (36) from the first filament (34). When the first filament (34) is supply voltage of 13.2 V at an electrical power greater operated at a supply voltage of 13.2 V at an electrical power greater than 35 W and less than or equal to 38 W, light with a luminous flux of 500-700 lm is emitted from the lamp 10. If the second filament (36) is operated at a supply voltage of 13.2 V at an electrical power greater than 35 W and less than or equal to 38 W, light with a luminous flux of 800-1000 lm is emitted from the lamp (10). Both the first and the second filament wire (34, 36) are comprised of a filament wire wound in a winding structure around a filament axis, where the number of winding turns for each of said first and second filaments (34, 36) is (16-23). |
