LUMINAIRE PHOTOELECTRIC CONTROL DEVICE WITH REFLECTIVE SHIELD

• US 3,584,228 A
• Filed: 03/27/1969
• Issued: 06/08/1971
• Est. Priority Date: 03/27/1969
• Status: Expired due to Term

• Current Assignee: Lewis W. Kenyon, Robert F. Kilpatrick
• Original Assignee: Lewis W. Kenyon, Robert F. Kilpatrick
• Inventors: Kenyon, Lewis W., Kilpatrick, Robert F.
• Application Number:
  US04/811,064
• Time in Patent Office: 803 Days
• US Class Current: 250/230
• CPC Class Codes: F21S 8/088 with lighting device mounted on top of the standard, e.g. for pedestrian zones
• CPC Class Codes: F21V 23/0464 the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

Adjustable reflective shield member is attached to photoelectric control unit mounted in luminaire for directing to the light sensor therein ambient light from desired direction and of desired intensity.

Claims

1. A luminaire comprising, in combination, a luminaire enclosure having a wall portion formed with an aperture, a light source mounted within said enclosure, a photoelectric control unit mounted in said enclosure for controlling the operation of said light source comprising a housing containing a light-sensitive element and formed with an opening through which light rays may enter for incidence on said light-sensitive element, said photoelectric control unit being arranged with the opening in said housing aligned with said aperture in said luminaire wall portion, a combined light shield and reflecting device arranged externally of said luminaire enclosure for directing ambient light rays from a selected direction into said housing opening, said combined device comprising a bendable strip having a reflecting surface facing said opening at an angle, said strip being bendable for adjusting said reflecting surface at a selected angle relative to the axis of said opening, and means mounting said combined device on the exterior of said luminaire enclosure wall portion for selective rotational adjustment about the axis of said opening, whereby said combined device may be bendably and rotationally adjusted for selectively directing ambient light rays from predetermined directions and of predetermined intensity into said photoelectric control unit.

2. A luminaire as defined in claim 1, said strip being formed of two arms arranged at an angle to one another, one of said arms being secured to said housing adjacent said opening therein, the other arm having said reflecting surface thereon.

3. A luminaire as defined in claim 2, said mounting means comprising a tubular member projecting from said housing exteriorly through said luminaire wall aperture, said one arm of said strip being formed with an aperture for fitting over said tubular member, and clamp means adjustably secured to said tubular member for clamping said one arm to said luminaire wall portion.