ANGLED LIGHT BOX LIGHTING SYSTEM

• US 20130182440A1
• Filed: 03/06/2013
• Published: 07/18/2013
• Est. Priority Date: 12/12/2008
• Status: Active Grant

• Current Assignee: Sloan Company Incorporated (Sloan)
• Original Assignee: Sloan Company Incorporated (Sloan)
• Inventors: Ferrie, Timothy Drew, Meyer, Aaron, Quaal, Bruce
• Granted Patent: US 9,200,788 B2
• Time in Patent Office: Days
• US Class Current: 362/249.08
• CPC Class Codes: F21S 4/20 with light sources held by or within elongate supports
• CPC Class Codes: F21V 17/007 with provision for shipment or storage
• CPC Class Codes: F21V 21/005 for several lighting devices in an end-to-end arrangement, i.e. light tracks
• CPC Class Codes: F21V 21/0808 Adhesive means
• CPC Class Codes: F21V 3/04 characterised by materials, surface treatments or coatings
• CPC Class Codes: F21V 7/048 with facets structure
• CPC Class Codes: F21Y 2107/70 on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G09F 13/0409 Arrangements for homogeneous illumination of the display surface, e.g. using a layer having a non-uniform transparency arrangements of reflectors G09F13/14

Abstract

A lighting system comprising a light box housing, a plurality of lighting units including a housing, a plurality of light emitting elements mounted on a PCB within the housing. The light emitting elements arranged on an angled surface such that the light emitting elements emit light in a sideways direction from the lighting units. The lighting units can also be interconnected in a daisy-chain configuration, such that the lighting units form a row of lighting units. The row of lighting units adapted to be mounted within the light box housing, wherein the light box housing comprises one or more rows of lighting units.

Claims

1. A lighting unit, comprising:

a housing;

at least one printed circuit board (PCB) within said housing;

at least one light emitting element on said at least one PCB, wherein said at least one light emitting element is on at least one angled surface and configured to emit light in a direction relative to said at least one angled surface, such that said at least one light emitting element has a respective light distribution pattern angled off-center from a longitudinal axis of said lighting unit; and

at least one optical element proximate said at least one light emitting element, said at least one optical element arranged to alter the light emitted from said at least one light emitting element to produce a desired light distribution pattern.

2. The lighting unit of claim 1, wherein said at least one optical element arranged to cover part of a top side of said lighting unit and said at least one light emitting element, wherein said at least one optical element is shaped similarly to said top side of said lighting unit.

3. The lighting unit of claim 2, wherein said at least one optical element is comprised of a diffuser and is adapted to diffuse the light emitted from said at least one light emitting element such that the light emitted from the lighting unit appears as a continuous light source.

4. The lighting unit of claim 1, further comprising a plurality of optical elements, wherein each of said plurality of optical elements are arranged to only cover a respective one of said at least one light emitting element.

5. The lighting unit of claim 4, wherein each of said plurality of optical elements are diffusers adapted to diffuse light emitted from said respective one of said at least one light emitting element.

6. The lighting unit of claim 1, wherein said at least one optical element is comprised of at least one reflector adjacent said at least one light emitting element, wherein said at least one reflector extends along substantially all of a top side of said lighting unit.

7. The lighting unit of claim 6, wherein said at least one reflector comprises a reflective surface facing said at least one light emitting element.

8. The lighting unit of claim 7, wherein said reflective surface can be a curved surface, angled surface or a multi-faceted surface.

9. The lighting unit of claim 1, further comprising a plurality of optical elements, wherein each of said plurality of optical elements is on part of a top side of said lighting unit and adjacent a respective one of said at least one light emitting element.

10. The lighting unit of claim 9, wherein each of said plurality of optical elements are reflectors adapted to reflect light emitted from said respective one of said at least one light emitting element.

11. The lighting unit of claim 1, wherein said PCB comprises at least one portion adapted to be bent to form said at least one angled surface, wherein said at least one light emitting element is on said at least one portion of said PCB.

12. The lighting unit of claim 11, wherein said lighting unit is configured to be a single-sided light emitting device.

13. The lighting unit of claim 11, wherein said lighting unit is configured to be a double-sided light emitting device.

14. The lighting unit of claim 1, wherein said housing comprises said at least one angled surface, such that said at least one PCB is on said at least one angled surface.

15. The lighting unit of claim 1, wherein said at least one PCB adapted to conduct and dissipate heat from said at least one light emitting element.

16. The lighting unit of claim 15, wherein said at least one PCB comprises a metal core PCB arranged to conduct heat away from said at least one light emitting element.

17. The lighting unit of claim 1, wherein said at least one light emitting element comprises a light emitting diode.

18. The lighting unit of claim 1, further comprising a plurality of light emitting elements and a plurality of angled surfaces, wherein said angled surfaces are opposite each other about said longitudinal axis and comprise at least one of said plurality of light emitting elements, such that each of said at least one of said plurality of light emitting elements face a direction different than at least one of the remaining plurality of light emitting elements.

19. An array of lighting units, comprising:

a carrier;

a plurality of lighting units mounted on said carrier, wherein said plurality of lighting units are electrically connected to each other in a daisy-chain configuration, each of said plurality of lighting units comprising;

a housing;

a plurality of light emitting elements;

at least one printed circuit board (PCB) within said housing, wherein said plurality of light emitting elements are mounted on said at least one PCB, said plurality of light emitting elements arranged on an angled surface and configured to emit light in a direction relative to said at least one angled surface;

first and second conductors adapted to provide an electrical signal to each of said light emitting elements, wherein an extended length of conductors is stored within a compartment of said housing;

wherein said carrier is adapted to be flexible, such that said plurality of lighting units and said carrier are adapted to be coiled to form a coiled array of lighting units.

20. The array of lighting units of claim 19, wherein said carrier is comprised of flexible material.

21. The array of lighting units of claim 20, wherein said carrier is formed of steel, aluminum, or a combination thereof.

22. The array of lighting units of claim 19, wherein said coiled array of lighting units arranged to provide an extended length of fully assembled and electrically connected array of lighting units on said carrier.

23. The array of lighting units of claim 19, further comprising at least one bracket around part of said coiled array of lighting units, wherein said at least one bracket adapted to maintain the coiled shape of said coiled array of lighting units.

24. The array of lighting units of claim 19, wherein said carrier is adapted to be substantially flat when said coiled array of lighting units is uncoiled.

25. The array of lighting units of claim 19, wherein said coiled array of lighting units is adapted to be packaged in a box, wherein a storage support structure is arranged in a central opening of said coiled array of lighting units.

26. The array of lighting units of claim 25, wherein said box is a pizza-type box.

27. The array of lighting units of claim 25, wherein said storage support structure is adapted to maintain the coiled shape of said coiled array of lighting units.

28. The array of lighting units of claim 25, wherein said storage support structure is adapted to be modified, such that the shape or size said storage support structure can be adjusted to accommodate different coiled arrays.

29. The array of lighting units of claim 25, wherein said box comprises said storage support structure.

30. The array of lighting units of claim 25, wherein said storage support structure is a separate element, such that said storage support structure is removable from said box.

31. The array of lighting units of claim 19, wherein said carrier is adapted to be cut to adjust the separation of adjacent lighting units of said plurality of lighting units.

32. The array of lighting units of claim 31, wherein the separation of said adjacent lighting units is proportional to the amount of extended length of conductors within said compartment of said housing.

33. The array of lighting units of claim 19, wherein said housing further comprising at least one clamping device arranged to hold said extended length of conductors within said compartment of said housing.

34. The array of lighting units of claim 33, wherein said at least one clamping device comprises a first bracket and a second bracket to receive said extended length of conductors.

35. The array of lighting units of claim 34, wherein at least one of said first or second bracket comprising at least one extension, wherein said at least one extension adapted to impart a force on said extended length of conductors, such that said extended length of conductors remain in said compartment.