Two-level security lighting system
DCFirst Claim
1. A lighting system comprising:
- a motion sensor for sensing motion;
a photocell for sensing the presence or absence of daylight;
a lamp;
a housing for carrying said motion sensor, said photocell and said lamp;
means for connecting said lamp to a source of external electrical power; and
a control circuit for electrically connecting said connecting means to said motion sensor and said photocell for enabling said lamp to be illuminated by said motion sensor or said photocell, said control circuit allowing for manual override of said motion sensor and said photocell to enable said lamp to be illuminated by an external switch.
18 Assignments
Litigations
0 Petitions
Accused Products
Abstract
A security light has a quartz-halogen lamp, a photocell, a passive infrared sensor for detecting motion external to the security light, and a circuit which causes the quartz-halogen lamp to operate at about 50% of full brightness in the absence of detection of motion at night, to operate at 95% of full brightness for a predetermined time interval in response to detection of motion at night, and to be off while the photocell is detecting daylight. A switch allows the user to select a different mode of operation which is similar except that the lamp is kept off in the absence of detection of motion at night. A user-initiated override mode is also provided, which causes the lamp to continuously operate at 95% of full brightness until the photocell detects daylight or until the user disables the override mode.
65 Citations
7 Claims
-
1. A lighting system comprising:
-
a motion sensor for sensing motion; a photocell for sensing the presence or absence of daylight; a lamp; a housing for carrying said motion sensor, said photocell and said lamp; means for connecting said lamp to a source of external electrical power; and a control circuit for electrically connecting said connecting means to said motion sensor and said photocell for enabling said lamp to be illuminated by said motion sensor or said photocell, said control circuit allowing for manual override of said motion sensor and said photocell to enable said lamp to be illuminated by an external switch. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
Specification