LED retrofit luminaire tubes

• US 8,752,978 B2
• Filed: 08/17/2011
• Issued: 06/17/2014
• Est. Priority Date: 08/17/2010
• Status: Expired due to Fees

• Current Assignee: Keystone L.E.D. Holdings LLC
• Original Assignee: Keystone L.E.D. Holdings LLC
• Inventors: Bloom, John R., Cressman, Craig S., Frantz, Richard A., Clark, Daniel J., Bloom, Walter M. Jr.
• Primary Examiner(s): CARIASO, ALAN B
• Application Number:
  US13/212,146
• Publication Number:
  US 20120212953A1
• Time in Patent Office: 1,035 Days
• Field of Search: 362/217.05, 362/223, 362/224, 362/249.02, 362/249.03, 362/238, 362/555, 362/311.02, 362/249.01
• US Class Current: 362/223
• CPC Class Codes: H05B 45/52 in a parallel array of LEDs
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

An LED retrofit tube that has an outer body that is substantially a lens so as to enable light generated by LEDs and light reflected therewithin to pass through substantially the entire tube. The tube includes an extrusion to support a circuit board having light emitting diodes (LEDs) mounted thereto. The extrusion is located substantially with the lens. The circuit boards may include LEDs mounted on both sides to provide primary lighting and secondary lighting (backlighting). The extrusion may include grooves to allow the backlighting to pass therethrough. Rotational endcaps include an inner portion and an outer portion that can rotate with respect to one another to enable the tube to be rotated and the light dispersed therefrom to be focused.

Claims

1. An LED retrofitted tube comprising

a lens that is substantially circular and makes up substantially an outer body of the tube;

and

an extrusion to hold a circuit board housing light emitting diodes (LEDs), where the extrusion is located substantially within the lens, wherein the circuit board includes LEDs mounted on both sides, the LEDs mounted on a first side point away from the extrusion and the LEDs on a second side face the extrusion, wherein the extrusion includes grooves formed in alignment with the LEDs on the second side of the circuit board to enable light emitted therefrom to pass therethrough.

2. The tube of claim 1, wherein light emitted from the LEDs and reflected within the tube can be dispersed from the tube through any portion of the lens.

3. The tube of claim 1, wherein the extrusion includes channels to support the edges of the circuit board.

4. The tube of claim 3, wherein the extrusion includes a center portion to provide support and heat sinking for the circuit board.

5. The tube of claim 1, wherein the extrusion is T-shaped and includes a base supporting a platform.

6. The tube of claim 5, wherein the lens connects to the base of the extrusion.

7. The tube of claim 5, wherein the platform includes rails extending upwards at the edges that have channels formed therein for securing the circuit board.

8. The tube of claim 7, wherein the platform further includes a center rail to provide additional support for the circuit board and to provide heat sinking from the middle of the circuit board.

9. The tube of claim 1, wherein the circuit board receives power from an external power supply.

10. The tube of claim 1, further comprising endcaps that have an inner portion and an outer portion, wherein the inner and outer portions can rotate with respect to one another in order to focus light emitted from the LEDs.

11. An LED retrofitted tube comprising

a lens that is substantially circular and makes up substantially an outer body of the tube;

and

an extrusion to hold a circuit board housing light emitting diodes (LEDs), wherein the extrusion is located substantially within the lens, wherein the extrusion is T-shaped and includes a base supporting a platform, wherein the circuit board includes LEDs mounted on both sides, the LEDs mounted on a first side point away from the platform and the LEDs on a second side face the platform, wherein the platform includes grooves formed in alignment with the LEDs on the second side of the circuit board to enable light emitted therefrom to pass therethrough.

12. The tube of claim 11, wherein the lens connects to the base of the extrusion.

13. The tube of claim 11, wherein the platform includes rails extending upwards at the edges that have channels formed therein for securing the circuit board.

14. The tube of claim 13, wherein the platform further includes a center rail to provide additional support for the circuit board and to provide heat sinking from the middle of the circuit board.

15. The tube of claim 11, further comprising endcaps that have an inner portion and an outer portion, wherein the inner and outer portions can rotate with respect to one another in order to focus light emitted from the LEDs.

16. An LED retrofitted tube comprising

a lens that is substantially circular and makes up substantially an outer body of the tube;

and

an extrusion to hold a circuit board housing light emitting diodes (LEDs), wherein the extrusion is located substantially within the lens, wherein the extrusion is T-shaped and includes a base supporting a platform, wherein the platform includes rails extending upwards at the edges that have channels formed therein for securing the circuit board and a center rail to provide additional support for the circuit board and to provide heat sinking from the middle of the circuit board.

17. The tube of claim 16, wherein the lens connects to the base of the extrusion.

18. The tube of claim 16, wherein the circuit board includes LEDs mounted on both sides, the LEDs mounted on a first side point away from the platform and the LEDs on a second side face the platform, wherein the platform includes grooves formed in alignment with the LEDs on the second side of the circuit board to enable light emitted therefrom to pass therethrough.

19. The tube of claim 16, wherein the circuit board receives power from an external power supply.

20. The tube of claim 16, further comprising endcaps that have an inner portion and an outer portion, wherein the inner and outer portions can rotate with respect to one another in order to focus light emitted from the LEDs.