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22. 发明授权

US4870548A Convertible light fixture 失效
标题翻译：敞篷灯具
公开(公告)号：US4870548A
公开(公告)日：1989-09-26
申请号：US201713
申请日：1988-06-03
申请人： Robert W. Beachy , Bart T. Ellson , Jay J. Kakuk , Gerald E. Peterson
发明人： Robert W. Beachy , Bart T. Ellson , Jay J. Kakuk , Gerald E. Peterson
IPC分类号： F21S8/08 , F21V19/02 , F21V21/30 , F21V27/00 , F21Y101/00
CPC分类号： F21S8/081 , F21V14/04 , F21V14/06 , F21V21/002 , F21V21/0824 , F21V27/00 , F21V21/30 , F21W2131/10 , F21W2131/109
摘要： A convertible light fixture (10) capable of selectively functioning as a spotlight or floodlight. A preferred light fixture (10) includes a ground stake (12) supporting a bulb/lens assembly (14). An electrical cable (16), protected by the preferred S-shaped ground stake (12), makes contact with the bulb/lens assembly (14) at the rear thereof. More specifically, a pair of prongs (60), which also support a bulb (62), protrude from the rear of bulb/lens assembly (14) and make contact with electrical cable (16). Preferred bulb/lens assembly (14) includes a stationary housing (40) and a rotatable focus ring (70) wherein rotation of the latter relative to the former causes axial movement of a reflector (80) relative to bulb (62) to change the degree of focus of the light beam produced by fixture (10). Another feature of preferred bulb/lens assembly (14) is a lens (90) which produces a rectangular light beam adjustable in orientation.
摘要翻译：一种能够有选择地用作聚光灯或泛光灯的敞篷灯具（10）。优选的灯具（10）包括支撑灯泡/透镜组件（14）的接地桩（12）。由优选的S形接地桩（12）保护的电缆（16）在其后部与灯泡/透镜组件（14）接触。更具体地，也支撑灯泡（62）的一对插脚（60）从灯泡/透镜组件（14）的后部突出并与电缆（16）接触。优选的灯泡/透镜组件（14）包括固定壳体（40）和可旋转聚焦环（70），其中后者相对于前者的旋转导致反射器（80）相对于灯泡（62）的轴向运动，以改变由夹具（10）产生的光束的焦距。优选灯泡/透镜组件（14）的另一个特征是透镜（90），其产生可在取向上调节的矩形光束。

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