| 摘要 |
FIELD: lighting engineering, illumination of streets, roads, highways, squares, greenhouses. SUBSTANCE: upper part of body of fixture has platform for starting and controlling equipment and its lower part has ribs to remove heat which height is related to diameter of lamp-holder. Internal parts of ribs has shape of truncated circumference specified by chord in section. Longitudinal groove that can be closed with protective shutter is formed between ribs along entire length of body. EFFECT: reduced mass and size of fixture thanks to manufacture of body in the form of metal profile. 1 cl, 4 dwg
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