LED-BASED LIGHT WITH CANTED OUTER WALLS

• US 20160348851A1
• Filed: 08/14/2015
• Published: 12/01/2016
• Est. Priority Date: 06/01/2015
• Status: Active Grant

• Current Assignee: Ilumisys Incorporated (Altair Engineering Incorporated)
• Original Assignee: Ilumisys Incorporated (Altair Engineering Incorporated)
• Inventors: Amrine, James M. Jr., Ivey, John
• Granted Patent: US 10,161,568 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F21K 9/27 Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
• CPC Class Codes: F21K 9/278 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21K 9/60 Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
• CPC Class Codes: F21K 9/66 Details of globes or covers forming part of the light source
• CPC Class Codes: F21V 17/104 using feather joints, e.g. tongues and grooves, with or without friction
• CPC Class Codes: F21V 19/003 Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
• CPC Class Codes: F21V 19/0045 by tongue and groove connections, e.g. dovetail interlocking means fixed by sliding
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21V 23/023 Power supplies in a casing F21V23/003 takes precedence
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21Y 2101/00 Point-like light sources
• 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]

Abstract

An LED-based light has an elongate housing having a longitudinal axis and a vertical axis, the housing defined by a base and two canted outer walls meeting opposite the base, the housing defining a cavity. An LED circuit board on which a plurality of LEDs are located is positioned within the cavity. End caps are positioned at opposite ends of the housing.

Claims

1. An LED-based light comprising:

an elongate housing having longitudinal axis and a vertical axis, the housing defined by a base and two canted outer walls meeting opposite the base, the housing defining a cavity;

an LED circuit board on which a plurality of LEDs are located, the LED circuit board positioned within the cavity; and

end caps positioned at opposite ends of the housing.

2. The LED-based light of claim 1, wherein the base and two canted outer walls form a substantially equilateral triangle.

3. The LED-based light of claim 1, wherein the base and two canted outer walls form a substantially isosceles triangle.

4. The LED-based light of claim 1, wherein the two canted outer walls are formed of a light transmitting material and configured to maximize an illuminated section of the housing that faces horizontal.

5. The LED-based light of claim 1, wherein a portion of a profile of each of the two canted outer walls between a line tangent to the profile and 45°

from horizontal and a line tangent to the profile and 90°

from the horizontal is greater than 30 percent.

6. The LED-based light of claim 1, wherein the LED circuit board is positioned on an interior surface of the base of the housing.

7. The LED-based light of claim 1, wherein the LED circuit board is mounted in the housing in an area having other than a greatest width of the cavity.

8. The LED-based light of claim 1, further comprising a support creating in the housing a bipartite configuration splitting the cavity into a first cavity and a second cavity.

9. The LED-based light of claim 8, wherein the LED circuit board is supported by the support in the first cavity.

10. The LED-based light of claim 9, further comprising a power supply circuit board positioned in the second cavity and supported by the support.

11. The LED-based light of claim 8, wherein the greatest width of the housing is in the second cavity.

12. The LED-based light of claim 8, wherein the support comprises a planar portion and opposed sidewalls extending away from the planar portion of the support.

13. The LED-based light of claim 1, wherein the end caps have an open end to receive the housing and a closed end, at least one of the closed end of the end caps having a tapered surface tapering toward the open end.

14. The LED-based light of claim 13, wherein the tapered surface tapers toward the open end at a corner opposite the base of the housing.

15. An LED-based light comprising:

an elongate housing comprising a base extending substantially along a horizontal and two canted outer walls extending from the base and canting toward each other, wherein a portion of a profile of each of the two canted outer walls between a line tangent to the profile and 45°

from the horizontal and a line tangent to the profile and 90°

from the horizontal is greater than 30 percent, the housing defining a cavity;

an LED circuit board on which a plurality of LEDs are located, the LED circuit board positioned within the cavity; and

an end cap at each end of the housing.

16. The LED-based light of claim 15, wherein the base and two canted outer walls form a substantially equilateral triangle or a substantially isosceles triangle.

17. The LED-based light of claim 15, wherein the two canted outer walls are formed of a light transmitting material and configured to maximize an illuminated section of the housing that faces the horizontal.

18. The LED-based light of claim 15, wherein the LED circuit board is positioned on an interior surface of the base of the housing.

19. The LED-based light of claim 15, wherein the LED circuit board is mounted in the housing in an area having other than a greatest width of the cavity.

20. The LED-based light of claim 15, wherein each end cap has an open end to receive the housing and a closed end, the closed end supporting at least one connector, the closed end having a tapered surface tapering toward the open end, the tapered surface capable of unobstructed insertion into a lighting fixture.