Lamp assembly adapted to illuminate a backlit sign
First Claim
1. A lamp assembly adapted to illuminate a backlit sign comprising:
- at least one circuit board comprising a surface; and
a plurality of light emitting diodes mounted on the at least one circuit board, the plurality of light emitting diodes being oriented with respect to the surface of the at least one circuit board such that a beam of light emitted from the at least one circuit board is directed to a portion of the backlit sign.
1 Assignment
0 Petitions
Accused Products
Abstract
A lamp assembly and method for illuminating a backlit sign include at least one circuit board and light emitting diodes mounted on the circuit board. The light emitting diodes are oriented such that a majority of emitted light or a beam from the circuit board is directed to only a portion of the backlit sign. The light emitting diodes are positioned uniformly around a perimeter of the circuit board to ensure uniform illumination around the lamp assembly. The circuit boards are arranged parallel to each other and perpendicular to a longitudinal axis of the lamp assembly. The lamp assembly includes a plurality of resistors mounted on the circuit board such that heat dissipated by the resistors is uniformly distributed over the circuit board. The lamp assembly also includes a Bridge rectifier to provide a DC output voltage from AC or DC input voltages.
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Citations
26 Claims
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1. A lamp assembly adapted to illuminate a backlit sign comprising:
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at least one circuit board comprising a surface; and a plurality of light emitting diodes mounted on the at least one circuit board, the plurality of light emitting diodes being oriented with respect to the surface of the at least one circuit board such that a beam of light emitted from the at least one circuit board is directed to a portion of the backlit sign. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A lamp assembly adapted to illuminate a backlit sign comprising:
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at least one circuit board comprising a surface; a plurality of light emitting diodes mounted on the at least one circuit board; and a plurality of resistors mounted on the at least one circuit board such that heat dissipated by the plurality of resistors is substantially uniformly distributed over the at least one circuit board.
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14. A method of illuminating a backlit sign comprising:
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providing at least one circuit board comprising a surface; and mounting a plurality of light emitting diodes on the at least one circuit board, the plurality of light emitting diodes being oriented with respect to the surface of the at least one circuit board such that a beam of light emitted from the at least one circuit board is directed to a portion of the backlit sign. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of illuminating a backlit sign comprising:
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providing at least one circuit board comprising a surface; mounting a plurality of light emitting diodes on the at least one circuit board; and mounting a plurality of resistors on the at least one circuit board such that heat dissipated by the plurality of resistors is substantially uniformly distributed on the at least one circuit board.
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Specification