Light-emitting diode lamp and light fixture including same

• US 6,997,576 B1
• Filed: 10/08/2003
• Issued: 02/14/2006
• Est. Priority Date: 10/08/2003
• Status: Expired due to Fees

• Current Assignee: LEDtronics Incorporated, Micro Enhanced Technology Incorporated
• Original Assignee: LEDtronics Incorporated
• Inventors: Lodhie, Pervaiz, Vinoya, Lei U.
• Primary Examiner(s): Ward, John Anthony
• Application Number:
  US10/680,917
• Time in Patent Office: 860 Days
• Field of Search: 362/240, 362/244, 362/249, 362/217, 362/223, 362/800, 362/812
• US Class Current: 362/240
• CPC Class Codes: F21K 9/272 Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts F21K9/278 takes precedence
• CPC Class Codes: F21V 23/02 the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/3578 Emulating the electrical or functional characteristics of discharge lamps
• CPC Class Codes: Y10S 362/80 Light emitting diode
• CPC Class Codes: Y10S 362/812 Signs

Abstract

An LED lamp has a substantially planar circuit board having two opposed sides, and a plurality of light-emitting diodes (LEDs) grouped to form two LED arrays. The LEDs of one of the two LED arrays are mounted along opposite edges of one of the sides of the circuit board. The LEDs of the other LED array are mounted along opposite edges of the other side of the circuit board.

Claims

1. A lamp, comprising:

a circuit board having two opposed ends;

a plurality of light-emitting diodes (LEDs) disposed upon the circuit board; and

a pair of projections extending outwardly from each of said opposed ends, the pair of projections being electronically connected to the LEDs;

a tubular sheath housing said circuit board, said sheath being substantially translucent to light emitted by the LEDs; and

a pair of end caps installed in opposite ends of said sheath, said end caps being adapted to properly position and hold the circuit board in the sheath;

each of said end caps having holes adapted to receive a corresponding projection from said circuit board, said end caps being inserted into the opposite ends of the sheath such that said circuit board projections extend into said corresponding holes in said end caps, said circuit board thus being properly positioned and held in said sheath, each of said end caps having at least one terminal for connecting to an electrical power source.

2. The lamp of claim 1 wherein said LEDs are grouped to form two LED arrays, the LEDs comprising one of the two LED array being mounted along opposite edges of one of the sides of said circuit board and wherein the LEDs comprising the other LED array and mounted along opposite edges of the other side of said circuit board.

3. The lamp of claim 1 wherein the LEDs are formed into first and second arrays, said first array being electrically coupled to said second array but physically separated therefrom.