Light fixture for cold temperature environments
First Claim
Patent Images
1. A light fixture, comprising:
- an insulated housing;
at least one ballast mounted on an insulated pad in the housing;
at least two lamps; and
a lens covering the lamps and enclosing the housing.
1 Assignment
0 Petitions
Accused Products
Abstract
A cold temperature light fixture comprises an insulated housing having one or more ballasts and plural lamps to retain heat within enclosure so that ballasts and lamps start up more rapidly, and greater light output is obtained. The fixture may be operated in selected configurations and may include secondary heating elements within the fixture to warm ballasts. In one operating configuration, one or more of the ballasts is always energized and one or more of the lamps is preferably at least partially illuminated in an off mode. A sensor is operable to switch the fixture between the off and on mode, in which all ballasts are energized and all lamps illuminated.
48 Citations
24 Claims
-
1. A light fixture, comprising:
-
an insulated housing;
at least one ballast mounted on an insulated pad in the housing;
at least two lamps; and
a lens covering the lamps and enclosing the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A cold environment light fixture, comprising:
-
insulated housing means for providing an insulated enclosure for mounting at least one ballast and plural lamps, said insulated housing means including an insulating pad for mounting said at least one ballast;
control means for operating the fixture in a first mode in which said at least one ballast is energized and at least one lamp is illuminated, and a second mode in which said at least one ballast is energized and all of the lamps are illuminated. - View Dependent Claims (12, 13, 14, 15)
-
-
16. A method of retaining heat in a fluorescent lamp fixture in cold environments, comprising the steps of:
-
a) mounting at least two lamps in an insulated housing;
b) mounting at least one ballast on an insulated pad in the insulated housing; and
c) energizing at least intermittently the at least one ballast and at least one of the lamps. - View Dependent Claims (17, 18, 19, 20)
-
-
21. A fluorescent light fixture, comprising:
-
an insulated housing;
at least one dimmable ballast mounted on an insulated pad in the housing and a heating element in proximity to the at least one dimmable ballast;
at least two lamps; and
a lens covering the lamps. - View Dependent Claims (22, 23, 24)
-
Specification