| 摘要 |
An air diffuser providing a selectively adjustable air distribution pattern for use in combination with lighting fixtures or the like. An air distributing plenum is formed by an inner wall surrounding the lighting fixture, or the like and an outer wall spaced from the inner wall and defining an air flow channel between said walls leading to an outlet adjacent the open end of the lighting fixture. The pattern of discharge of air from the channel outlet is selectively controlled by means of an elastic deflector band surrounding and elastically gripping the inner wall, said band extending into the air path in the channel and subject to selective positioning with respect to the channel outlet to deflect the air discharge from the outlet.
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