Sealed lighting assembly employing side-emitting lenses
AssigneeC-R Control Systems, Inc.
InventorJurgen E. Ewert
Life of this patent
Estimating the term…
Abstract
A lighting assembly employs LED lamps and associated side-emitting lenses that each redirect the light generated by the associated LED lamp to provide a distribution of emitted light substantially normal to an axis of symmetry of the lens. In a basic embodiment, the lighting assembly employs two lenses in a stacked configuration, with one lens being inverted. The lighting assembly has two plates, to which the lenses and LED lamps attach, and the plates are attached together by a cylinder to form a sealed enclosure for the lenses and LED lamps. When increased light intensity is desired, an additional plate and cylinder can be added to form an additional enclosure, housing additional LED lamps and lenses. Further enclosures can be formed by additional plates and cylinders.
Claims17
A lighting assembly designed for operation while residing in an exposed outdoor environment, the lighting assembly emitting a desired distribution of light about a lighting assembly axis and comprising:
- a first plate serving as a base plate having a base plate axis which serves as the lighting assembly axis, a base plate lower face, and a base plate upper face, said base plate being formed from a highly thermally conductive material;
- a first LED lamp attaching to said base plate upper face and configured to generate a distribution of light that is symmetrical with respect to the base plate axis;
- a first side-emitting lens having a first lens central axis, said first side-emitting lens being attached to said base plate upper face and having a first lens cavity that surrounds said first LED lamp;
- a second plate spaced apart from said base plate and having a second plate axis, a second plate upper face, and a second plate lower face, said second plate being formed from a highly thermally conductive material;
- a second LED lamp attaching to said second plate lower face and configured to generate a distribution of light that is symmetrical with respect to the second plate axis;
- a second side-emitting lens having a second lens central axis, said second side-emitting lens being attached to said second plate lower face and having a second lens cavity that surrounds said second LED lamp;
- an optically transmissive cylindrical sheath;
- and
- means for sealably attaching said cylindrical sheath to said base plate upper face and to said second plate lower face in such a manner as to enclose said first side-emitting lens and said second side-emitting lens, while leaving a substantial portion of said base plate and said second plate exposed to the environment in which the lighting assembly resides.
Dependencies are inferred from the claim text.