LED-based light bulb device with Kelvin corrective features

• US 8,371,722 B2
• Filed: 11/04/2010
• Issued: 02/12/2013
• Est. Priority Date: 11/04/2009
• Status: Expired due to Fees

• Current Assignee: Forever Bulb, LLC
• Original Assignee: Forever Bulb, LLC
• Inventors: Carroll, David W.
• Primary Examiner(s): MAY, ROBERT J
• Application Number:
  US12/939,587
• Publication Number:
  US 20110103055A1
• Time in Patent Office: 831 Days
• Field of Search: 362/311.02, 362/249.02, 362/235, 362/236, 362/240, 362/242, 362/244, 362/246, 362/255, 362/363, 362/267, 362/355
• US Class Current: 362/311.02
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An LED light bulb device including a bulb body, a cap, an LED assembly, and first and second light affecting features. The cap is mounted to the bulb body for connection to an electrical socket. The LED assembly includes a plurality of LEDs and framework. The framework maintains the LEDs relative to the bulb body such that emitted light is directed at an LED region of the wall. The first light affecting feature is associated with the LED region of the wall, whereas the second light affecting feature is associated with a diffusion region of the wall, with the diffusion region being apart from the LED region. The first light affecting feature affects light in a manner different from that of the second light affecting feature. The light affecting features are selected to affect or alter light emitted from the LEDs to provide a desired Kelvin color temperature and diffusion.

Claims

1. An LED light bulb device comprising:

a bulb body having a wall defining an exterior surface, an interior surface, and an open interior;

a cap mounted to the bulb body and forming a surface for selective connection to an electrical socket, the cap and bulb body combining to define a light bulb-like structure;

an LED assembly including a plurality of LEDs and framework maintaining the LEDs relative to the bulb body such that emitted light is directed at a first LED region of the wall;

a first light affecting feature associated with the first LED region of the wall;

a second light affecting feature associated with a diffusion region of the wall apart from the first LED region;

wherein the first light affecting feature affects light in a manner differing from that of the second light affecting feature;

wherein the plurality of LEDs include a first LED, the framework maintaining the first LED relative to the bulb body such that light emitted by the first LED is directed at the first light affecting feature; and

wherein light from the first LED is directed inwardly into the open interior via the first light affecting feature and then outwardly from the open interior via the second light affecting feature.

2. The LED light bulb device of claim 1, wherein the first light affecting feature is selected from the group consisting of a coating, a film, a fabric, and a surface texturing.

3. The LED light bulb device of claim 2, wherein the first light affecting feature is applied to the exterior surface.

4. The LED light bulb device of claim 2, wherein the first light affecting feature is applied to the interior surface.

5. The LED light bulb device of claim 2, wherein the second light affecting feature is selected from the group consisting of a coating, a film, a fabric, and a surface texturing differing from the first light affecting feature.

6. The LED light bulb device of claim 2, wherein the second light affecting feature is characterized by the absence of a coating, a film, a fabric, and a surface texturing applied to the wall.

7. The LED light bulb device of claim 1, wherein the first light affecting feature is a coating exhibiting a first color and the second light affecting feature is a coating exhibiting a second, different color.

8. The LED light bulb device of claim 1, wherein the first LED is disposed along the exterior surface.

9. The LED light bulb device of claim 1, wherein the first LED is provided as part of a first set of LEDs, the plurality of LEDs further including a second set of LEDs, and further wherein the first set of LEDs is disposed against the wall at the first LED region, and the second set of LEDs is disposed against the wall at a second LED region of the wall, the first light affecting feature being associated with the second LED region.

10. The LED light bulb device of claim 9, wherein the framework includes a first stem maintaining the first set of LEDs and covering the LED region, and a second stem maintaining the second set of LEDs and covering the second LED region.

11. The LED light bulb device of claim 10, wherein the first light affecting feature is not visible from an exterior of the LED light bulb device.

12. The LED light bulb device of claim 1, wherein the first LED is characterized by the absence of a corrective coloring.

13. The LED light bulb device of claim 12, wherein the first LED is formed as part of a die-on-flex structure.

14. The LED light bulb device of claim 1, wherein the first LED is formed as part of a die-on-flex substrate and the first light affecting feature is a corrective coloring adhered to the flex substrate.