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    • 57. 发明授权
    • Indirect lighting fixture
    • 间接照明灯具
    • US3997776A
    • 1976-12-14
    • US600642
    • 1975-07-31
    • Alan J. Ruud
    • Alan J. Ruud
    • F21S6/00F21V33/00F21M7/00F21S1/12
    • F21S6/007F21V33/0012A47B97/00
    • An indirect lighting fixture for illuminating a desk top with light reflected from a room ceiling and for close association with the desk side comprises a hollow base extending beneath the desk, a pair of laterally spaced apart hollow support legs connected to the outermost side corners of the base and extending upwardly alongside the desk, and a lamp compartment connected to the upper ends of the legs and extending over the desk top in cantilever fashion above eye level. The lamp compartment which is open at the top but provided with a lens contains a metal halide or high pressure sodium lamp and a reflector for aiming the lamp light directly onto the ceiling for reflection directly down onto the desk top. The base contains relatively heavy electrical ballast components for starting and operating the lamp which also serve to weight the base and stabilize the fixture. The electrical components in the base are connected to the lamp by conductors within one of the support legs and the base is provided with a line cord and on-off switch.
    • 用于照射桌面的间接照明器具具有从房顶天花板反射并与桌面侧紧密结合的光线,包括在桌子下面延伸的中空基座,一对横向间隔开的中空支撑腿,其连接到桌面的最外侧角 底座并且在桌子旁边向上延伸,以及连接到腿的上端的灯室并且在桌面上方以悬臂方式在桌面上方延伸。 在顶部开放但设置有透镜的灯室包含金属卤化物或高压钠灯和用于将灯泡直接对准天花板的反射器,用于直接反射到桌面上。 基座包含用于启动和操作灯的相当重的电气镇流器部件,其也用于对基座进行加重并稳定固定装置。 基座中的电气部件通过一个支撑腿内的导体连接到灯,并且基座设置有线绳和开 - 关开关。