| 摘要 |
<p>The device (1) has a plastic housing (2) including a rear opening (9) in which a light source (3) e.g. filament lamp, is mounted. A ventilation orifice (10) is opened into the rear opening of the housing, and formed at an end (12) of a ventilating duct (11). The ventilation orifice is made in a single piece with the housing. The housing comprises a cylindrical rear neck (20) adjacent to the rear opening receiving the light source. The ventilating duct is extended perpendicular to an optical axis (X).</p> |
