Lighting e.g. damp proof lighting, has cover whose width reduces continuously from its longitudinal center or from its adjacent place

摘要

The lighting (1) has a trough shaped housing (2) in which connections are arranged for lamp. A cross-sectional dimension of the cover (4) from its longitudinal center or nearby place next to the longitudinal center reduces continuously in its width to both end area and/or to the end area of the cover.