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    • 2. 发明授权
    • LIGHT FIXTURE WITH CONTROLLABLE LIGHT BLOCK
    • 灯具与可控制灯块
    • EP0821776B1
    • 1999-03-24
    • EP96915323.8
    • 1996-04-17
    • MUSCO CORPORATION
    • STONE, Thomas, A.CROOKHAM, Joe, P.DiSANTO, Dorothy, K.
    • F21V11/08F21P1/00F21P5/00F21V29/00F21V17/02
    • F21V29/505F21V9/08F21V11/02F21V11/18F21V14/08F21V17/02F21V21/15F21V21/30F21V29/004F21V29/74F21V29/89F21W2131/406G03B21/2026
    • A lighting fixture (10) with a controllable light block (26). The fixture (10) includes a reflector (16) and high intensity discharge lamp (18) that requires a re-strike or warm-up period to come to full brightness or intensity. A cover member (26) is mounted to the reflector (16) and is moveable between an unblocked position and a blocked position. Movement of the cover member (26) is immediate so that blockage of light from the fixture is immediately effectuated. The apparatus is configured so that cover member (26) can be in the blocked position for indefinite periods of time even though the arc lamp continues to be operated at full power, without heat buildup which is detrimental to any part of the apparatus. The cover member (26) also allows light control and special effects lighting options. Another aspect of the invention utilizes an aperture (66) in the cover member (26) that is alignable with the light source when the cover member (26) is in the blocked position. Different inserts (78A, 135, 77) can be placed in the aperture, or it can be opened and closed independently to create special or theatrical effects including changes in color.
    • 具有可控光块(26)的照明器材(10)。 灯具(10)包括反射器(16)和高强度放电灯(18),其需要重新点亮或预热时段来达到完全的亮度或强度。 盖构件(26)安装到反射器(16)并且可在解锁位置和阻挡位置之间移动。 盖构件(26)的移动是即时的,以便立即实现灯具对灯的阻挡。 该设备被构造成使得即使弧光灯继续以全功率操作而不会对设备的任何部分有害的热累积,盖部件(26)也可以处于阻挡位置无限期的时间。 盖构件(26)还允许光线控制和特殊效果照明选项。 本发明的另一方面利用盖构件(26)中的当盖构件(26)处于阻挡位置时可与光源对准的孔(66)。 不同的插入件(78A,135,77)可以放置在孔中,或者可以独立地打开和关闭以产生包括颜色变化的特殊或戏剧效果。