A street light, outdoor light or the like is mounted on a tubular pole or similar vertical holder and has a lamp socket and a bulb. A lampshade to be detachably connected to the lamp socket includes a plastic transparent bulb cover for surrounding the bulb at a given level. The bulb cover has a sharply...http://www.google.de/patents/US5921663?utm_source=gb-gplus-sharePatent US5921663 - Lampshade for an outdoor light, in particular a pole-mounted light
