PHOSPHOR-CONTAINING LED LIGHT BULB

• US 20100301727A1
• Filed: 09/12/2008
• Published: 12/02/2010
• Est. Priority Date: 09/14/2007
• Status: Active Grant

• Current Assignee: Switch Bulb Company, Inc.
• Original Assignee: Superbulbs, Inc.
• Inventors: Carsten, Bruce, Lenk, Ronald J.
• Granted Patent: US 8,450,927 B2
• Time in Patent Office: Days
• US Class Current: 313/46
• 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 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• CPC Class Codes: F21V 29/56 using liquid coolants F21V29/51 takes precedence
• 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]
• CPC Class Codes: H01L 33/507 the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
• CPC Class Codes: H05B 33/145 Arrangements of the electroluminescent material

Abstract

An LED bulb, which includes a shell, a filler material within the shell of the bulb, at least one type of phosphor dispersed inside the filler material and at least one LED within the shell.

Claims

1. An LED bulb comprising:

a shell;

a filler material within the shell of the bulb;

at least one type of phosphor dispersed inside the filler material; and

at least one LED within the shell.

2. An LED bulb as set forth in claim 1, wherein the filler material is a fluid.

3. An LED bulb as set forth in claim 1, wherein the filler material is a gel.

4. An LED bulb as set forth in claim 1, wherein the filler material is a plastic.

5. An LED bulb as set forth in claim 1, wherein the filler material is glass.

6. An LED bulb as set forth in claim 1, wherein the filler material is thermally conductive.

7. An LED bulb as set forth in claim 1, wherein the at least one phosphor is uniformly distributed throughout the filler material.

8. An LED bulb as set forth in claim 1, wherein the at least one phosphor has a non-uniform distribution throughout the filler material.

9. An LED bulb as set forth in claim 1, wherein the at least one phosphor is comprised of at least two phosphors, and wherein the at least two phosphors comprises at least one phosphor having a different distribution from the others throughout the filler material.

10. An LED bulb as set forth in claim 1, wherein the shell contains at least one phosphor.

11. An LED bulb as set forth in claim 1, wherein the at least one LED is a blue or ultraviolet LED without a phosphor.

12. An LED bulb as set forth in claim 1, wherein the at least one LED is a blue or ultraviolet LED die.

13. An LED incandescent bulb replacement comprising:

an incandescent bulb-shaped shell;

a filler material within the shell of the bulb;

at least one type of phosphor dispersed inside the filler material; and

at least one LED within the shell.

14. An LED bulb as set forth in claim 13, wherein the filler material is a fluid.

15. An LED bulb as set forth in claim 13, wherein the filler material is a gel.

16. An LED bulb as set forth in claim 13, wherein the filler material is a plastic.

17. An LED bulb as set forth in claim 13, wherein the filler material is glass.

18. An LED bulb as set forth in claim 13, wherein the filler material is thermally conductive.

19. An LED bulb as set forth in claim 13, wherein the at least one phosphor is uniformly distributed throughout the filler material.

20. An LED bulb as set forth in claim 13, wherein the at least one phosphor has a non-uniform distribution throughout the filler material.

21. An LED bulb as set forth in claim 13, wherein the at least one phosphor is comprised of at least two phosphors, with at least one phosphor having a different distribution from the other phosphors throughout the filler material.

22. An LED bulb as set forth in claim 13, wherein the shell contains at least one phosphor.

23. An LED bulb as set forth in claim 13, wherein the at least one LED is a blue or ultraviolet LED without a phosphor.

24. An LED bulb as set forth in claim 13, wherein the at least one LED is a blue or ultraviolet LED die.

25. An LED bulb as set forth in claim 13, wherein the filler material is a hydrogel.

26. An LED bulb as set forth in claim 25, wherein the hydrogel contains at least one phosphor uniformly distributed throughout the said hydrogel.

27. An LED bulb as set forth in claim 25, wherein the hydrogel contains at least one phosphor having a non-uniform distribution throughout the said hydrogel.

28. An LED bulb as set forth in claim 25, wherein said hydrogel contains at least two phosphors, with at least one phosphor having a different distribution from the other phosphors throughout the hydrogel.