Illumination – Plural light sources – Diverse light generators
Reexamination Certificate
2000-03-21
2001-08-21
Sember, Thomas M. (Department: 2875)
Illumination
Plural light sources
Diverse light generators
C362S229000, C362S276000, C362S802000
Reexamination Certificate
active
06276814
ABSTRACT:
THIS INVENTION concerns a lighting appliance principally though not exclusively for use on the exterior of a building and adapted to provide illumination with minimum usage of electrical energy.
Low energy lighting appliances are known comprising a PL lamp which provides light output equivalent to that of a conventional lamp having a tungsten filament bulb but at a quarter (or less) power consumption.
Similarly, it is known to provide tungsten halogen (TH) flood lamps which produce high brilliance typically at between 100 and 500 watts power consumption.
An object of the present invention is to provide a lighting appliance which combines the advantages of these two known lamps and operable to ensure maximum energy saving.
According to the present invention there is provided a lighting appliance comprising a tungsten halogen (TH) flood lamp, a low energy (PL) lamp, and control means including a PIR sensor and a daylight sensor, the control means being selectable to cause the PL lamp and the (TH) lamp to be illuminated and extinguished automatically when required.
Preferably, the TH and PL lamps are contained within a common housing to which is adjustably attached a further housing containing a PIR and daylight sensor.
The lamp housing may include a bracket for attachment to a wall.
The lighting appliance preferably includes at least one timing device to determine the period of illumination of one or both of the lamps.
The PIR sensor preferably includes means for adjusting the effective range of operation thereof.
REFERENCES:
patent: 3038062 (1962-06-01), Liberman
patent: 3930148 (1975-12-01), Gruen
patent: 5662411 (1997-09-01), Haslam
patent: 5785413 (1998-07-01), Tillinghast et al.
patent: 6022125 (2000-02-01), Bartesevich et al.
patent: 6100803 (2000-08-01), Chang
Bridisco Limited
Sember Thomas M.
Williams Morgan & Amerson P.C.
LandOfFree
Lighting appliance does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lighting appliance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lighting appliance will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2527086