| 摘要 |
PURPOSE:To broaden light distribution laterally, so as to improve horizontal luminous intensity by providing bulbs vertically in parallel below the boundary surface of a main body and a globe. CONSTITUTION:A globe 2 is formed in a cross sectional shape almost symmetrical with a main body 1, with a prism 5 provided on the inner surface. A reflecting plate 6 is so arranged as to be located on the boundary surface of the main body 1 and the globe 2, and it is fixed on a fixture piece 7 hung from the ceiling of the main body 1 by a screw 8. A lamp 3 arranged below the reflecting plate 6 is so-called twin lamp, with two bulbs 3b being projected in parallel from a base 3a. By arranging the bulbs 3b vertically, vertical illuminance can be improved with no need of a special reflecting plate. The light distribution necessary for a crime prevention lamp can thus be obtained. |
