SOLID STATE LIGHT WITH FEATURES FOR CONTROLLING LIGHT DISTRIBUTION AND AIR COOLING CHANNELS

• US 20150036333A1
• Filed: 08/01/2013
• Published: 02/05/2015
• Est. Priority Date: 08/01/2013
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: HUMPAL, PAUL E., BROTT, ROBERT L., JOHNSTON, RAYMOND P., TSUEI, ALEXANDER C., POCH, JAMES F., MORTAZAVI, HAMID R.
• Granted Patent: US 8,967,837 B2
• Time in Patent Office: Days
• US Class Current: 362/235
• 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 9/275 Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings F21K9/278 takes precedence
• CPC Class Codes: F21K 9/61 using light guides
• CPC Class Codes: F21K 9/66 Details of globes or covers forming part of the light source
• CPC Class Codes: F21V 29/506 of globes, bowls or cover glasses
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21V 3/049 Patterns or structured surfaces for diffusing light, e.g. frosted surfaces
• CPC Class Codes: F21V 3/10 characterised by coatings
• CPC Class Codes: F21Y 2103/33 annular
• CPC Class Codes: F21Y 2107/00 Light sources with three-dimensionally disposed light-generating elements
• CPC Class Codes: F21Y 2107/30 on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A solid state light having a shell forming an interior volume and with surface texture for redirecting light. A light section is coupled to the shell, and a light source board in the light section includes at least one solid state light source such as an LED. The shell, light section, and light source board have apertures for providing an air cooling channel through the light. The solid state light source transmits light into the interior volume, and the light exits from the shell and is redirected by the surface texture, providing for various light distribution curves of the light.

Claims

1. A solid state light, comprising:

a shell comprising a material having a first surface and a second surface opposite the first surface, at least one aperture, and texture on the first or second surface, wherein the second surface forms an interior volume;

a light section having a first side, a second side opposite the first side and coupled to the shell, and at least one aperture between the first and second sides;

a light source board coupled to the light section; and

at least one solid state light source on the light source board, wherein the light source transmits light into the interior volume, at least a portion of the light exits from the first surface, and the texture redirects the light.

2. The light of claim 1, further comprising a base coupled to the first side of the light section and configured for connection to a power source.

3. The light of claim 1, wherein the light source board has at least one aperture when coupled to the light section.

4. The light of claim 1, wherein the light source board has no aperture when coupled to the light section.

5. The light of claim 1, further comprising a driver circuit on the light source board for driving the light source.

6. The light of claim 1, further comprising a transflective film on at least a portion of the second surface of the shell.

7. The light of claim 1, wherein the texture comprises ribs or pyramids protruding from the first surface of the shell.

8. The light of claim 1, wherein the texture protrudes from the first surface, and further comprising a transparent layer over the texture.

9. The light of claim 1, further comprising a light mixing chamber over the solid state light source.

10. A solid state light, comprising:

a shell comprising a material having a first surface and a second surface opposite the first surface, an edge between the first and second surfaces, at least one aperture, and texture on the first or second surface, wherein the second surface forms an interior volume;

a light section having a first side, a second side opposite the first side and coupled to the shell, and at least one aperture between the first and second sides;

a light source board coupled to the light section; and

at least one solid state light source on the light source board at the edge of the shell, wherein the light source transmits light into the edge and into the interior volume, at least a portion of the light exits from the first surface, and the texture redirects the light.

11. The light of claim 10, further comprising a base coupled to the first side of the light section and configured for connection to a power source.

12. The light of claim 10, wherein the light source board has a center opening.

13. The light of claim 10, further comprising a driver circuit on the light source board for driving the light source.

14. The light of claim 10, further comprising a transflective film on at least a portion of the second surface of the shell.

15. The light of claim 10, wherein the texture comprises ribs or pyramids protruding from the first surface of the shell.

16. A solid state light, comprising:

a shell comprising a material having a first surface and a second surface opposite the first surface, an edge between the first and second surfaces, and at least one aperture, wherein the second surface forms an interior volume;

a light section having a first side, a second side opposite the first side and coupled to the shell, and at least one aperture between the first and second sides;

a light source board coupled to the light section; and

a first solid state light source on the light source board at the edge of the shell, and a second solid state light source on the light source board within or adjacent the interior volume, wherein the first light source transmits light into the edge, the second light source transmits light into the interior volume, and at least a portion of the light from the first and second light sources exits from the first surface.

17. The light of claim 16, further comprising a base coupled to the first side of the light section and configured for connection to a power source.

18. The light of claim 16, wherein the light source board has at least one aperture when coupled to the light section.

19. The light of claim 16, further comprising a driver circuit on the light source board for driving the first and second light sources.

20. The light of claim 16, further comprising a transflective film on at least a portion of the second surface of the shell.

21. The light of claim 16, wherein the shell has texture on the first or second surface, and the texture redirects the light from the first and second light sources.

22. The light of claim 21, wherein the texture comprises ribs or pyramids protruding from the first surface of the shell.

23. The light of claim 16, further comprising a reflective material between the first and second light sources.

24. A solid state light, comprising:

a shell comprising a material having a first surface and a second surface opposite the first surface, at least one aperture, and texture on the first or second surface, wherein the second surface forms an interior volume;

a light section having a first side, a second side opposite the first side and coupled to the shell, and at least one aperture between the first and second sides;

a light source board coupled to the light section;

a pedestal heat sink on the light source board; and

at least one solid state light source on the pedestal heat sink, wherein the light source transmits light into the interior volume, at least a portion of the light exits from the first surface, and the texture redirects the light.

25. The light of claim 24, further comprising a base coupled to the first side of the light section and configured for connection to a power source.

26. The light of claim 24, wherein the light source board has at least one aperture when coupled to the light section.

27. The light of claim 24, further comprising a driver circuit on the light source board for driving the light source, wherein the pedestal heat sink covers the driver circuit.

28. The light of claim 24, further comprising a transflective film on at least a portion of the second surface of the shell.

29. The light of claim 24, wherein the texture comprises ribs or pyramids protruding from the first surface of the shell.

30. The light of claim 24, wherein the pedestal heat sink is shaped to direct light from the light source to the shell for substantially uniform distribution of light from first surface of the shell.