EFFICIENT ILLUMINATION SYSTEM FOR LEGACY STREET LIGHTING SYSTEMS
1 Assignment
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Accused Products
Abstract
An LED lamp for outdoor and large space lighting, particularly for streets, warehouses car parks and the like, is adapted for fitting into legacy light fittings designed for sodium bulbs and the like. The LED lamp comprises a plurality of light emitting diodes arranged over a surface of the lamp, is rotatably connected through a rotatable electrical connection to a screw-in adaptor for insertion into a legacy screw-in socket, such that the screw in adaptor is rotatable independently of the lamp, so that the legacy screw in socket can be used even though the light fitting is too small to allow rotation of the LED lamp. Additional embodiments provide for cooling airflow through the light fitting, for temperature control of the LEDs, and for failure protection, to ensure a longest possible lamp lifetime.
18 Citations
49 Claims
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1-32. -32. (canceled)
- 33. A lighting device comprising an LED lamp for fitting into a light fitting having a screw-in socket, useful for outdoor or large space lighting, the LED lamp comprising a plurality of light emitting diodes arranged over a surface of the lamp, the lamp being rotatably connected through a rotatable electrical connection to a screw-in adaptor for insertion into the screw-in socket, such that the screw in adaptor is rotatable independently of the lamp, the independent rotation of the screw-in adaptor thereby making an electrical connection through said socket even if the light fitting is insufficiently sized to allow rotation therein of the LED lamp, wherein the light fitting has a ballast housing, the lighting device further comprising a power controller locatable in said ballast housing for providing regulated power through said screw-in socket.
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47. A lighting device useful for outdoor or large space lighting, comprising
an LED lamp body for fitting into a light fitting having a ballast housing and a screw-in socket, the LED lamp comprising a plurality of light emitting diodes arranged over a surface of the lamp; -
an electrical connection through said screw-in socket; and a first power controller locatable in said ballast housing for providing regulated power through said screw-in socket. - View Dependent Claims (48, 49)
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Specification