| 摘要 |
A bracket (12) is fixed to the rear surface of a reflector (2). The bracket has a planar plate (14) which, when the bracket is fixed to the reflector, is perpendicular to a polarity axis (16). Plural, spaced-apart arcuate slots (20) arranged on an imaginary circle on the planar plate (14) about the polarity axis (16) are formed in the planar plate (14). An adapter plate (24) is disposed in contact with the surface of the planar plate (14) facing the reflector (2). The bracket (12) is rotatable about the polarity axis (16) relative to the adapter plate (24). The adapter plate (24) has screw holes (26) in alignment with the arcuate slots (20) in the planar plate (14). A bracket (28) is disposed on the side of the planar plate (14) opposite to the reflector (2). The bracket (28) has a pair of wings (30, 32). A connecting member (34) is formed integral with the wings (30, 32). The connecting member (34) is perpendicular to the wings (30, 32). The bracket (28) is rotatable about an elevation adjustment axis passing between the wings (30, 32). The bracket (28) has tabs (36, 38, 40). The tabs (36, 38, 40) are adapted to contact the planar plate (14) and provided with respective holes (42, 44, 46). Bolts (48) are inserted through the respective holes (42, 44, 46) and the respective arcuate slots (20) and screwed into the screw holes (26) in the adapter plate (24), whereby the brackets (12, 28) are secured to the adapter plate (24).
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