LED based lamp replacment

• US 8,441,192 B2
• Filed: 12/31/2010
• Issued: 05/14/2013
• Est. Priority Date: 12/31/2010
• Status: Active Grant

• Current Assignee: Amina M. Chidiac
• Original Assignee: Amina M. Chidiac
• Inventors: Chidiac, Amina M.
• Primary Examiner(s): A, Minh D
• Application Number:
  US12/930,202
• Publication Number:
  US 20120169227A1
• Time in Patent Office: 865 Days
• Field of Search: 315/35, 315/197, 315/268, 362/186, 362/362, 362/363, 362/311.01, 362/311.02, 362/311.03, 362/311.04, 362/311.05, 362/311.06, 362/800
• US Class Current: 315/35
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/61 using light guides
• CPC Class Codes: F21V 17/101 permanently, e.g. welding, gluing or riveting
• CPC Class Codes: F21V 17/12 by screwing
• CPC Class Codes: F21V 17/164 the parts being subjected to bending, e.g. snap joints
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 3/062 the material being plastics
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The present invention provides an energy efficient replacement for a standard incandescent lamp using LED devices which direct their light output into a light transmissive medium which is also capable of radiating the transmitted light outwardly in a plurality of directions. More particularly, the present invention provides an incandescent lamp replacement which is virtually identical in external form factor to the standard incandescent lamp.

Claims

1. A lighting device comprising:

a base having at least two electrical contacts and being configured for lamp socket insertion;

a power unit disposed within said base and connected to said two electrical contacts;

at least one LED device electrically connected to said power unit; and

a light transmissive medium, having an edge, coupled to receive light from said at least one LED which is disposed so as to direct light emitted from said LED into said edge of said light transmissive medium and to radiate light outwardly from said light transmissive medium, said light transmissive medium having a structure selected from a group consisting of an outer envelope having the shape of a standard light bulb, an envelope having the shape of a tubular fluorescent lamp and a structure resembling filamentary elements in standard incandescent lamps.

2. The device of claim 1 in which said light is radiated in a direction which is substantially transverse to light flow within said light transmissive medium.

3. The device of claim 1 in which said light transmissive envelope is configured to snap onto said base.

4. The device of claim 1 in which said light transmissive medium has a hollow interior.

5. The device of claim 1 in which said light transmissive medium includes a light reflective surface disposed on the interior thereof.

6. The device of claim 1 in which said selected light transmissive medium structure is the outer envelope having the shape of a standard light bulb and in which there are a plurality of LEDs disposed around a mounting surface on said base.

7. The device of claim 1 in which said selected light transmissive medium structure is that resembling filamentary elements in standard incandescent lamps and in which there are two of said at least one LED devices, with each one being coupled to an opposite end of said light transmissive structure.