Ribs for sealing and aligning an outdoor lightguide luminaire

• US 10,222,544 B1
• Filed: 05/05/2017
• Issued: 03/05/2019
• Est. Priority Date: 05/05/2016
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Cooper Technologies Incorporated (Cooper Technologies)
• Inventors: Moghal, Khurram Z.
• Primary Examiner(s): Hines, Anne M
• Application Number:
  US15/588,441
• Time in Patent Office: 669 Days
• CPC Class Codes: F21S 8/081 of low-built type, e.g. landscape light
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02B 6/0083 Details of electrical connections of light sources to drivers, circuit boards, or the like
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02B 6/009 of the light source in the package G02B6/0021 takes precedence
• CPC Class Codes: G02B 6/0093 Means for protecting the light guide

Abstract

A luminaire can comprise a top housing fastened to a bottom housing, the top housing comprising at least one rib, the luminaire further comprising a lightguide disposed between the top housing and the bottom housing, the rib securing the lightguide against a gasket, wherein the gasket is located between the lightguide and the bottom housing, and the luminaire further comprising a light source disposed between the top housing and the bottom housing and further disposed adjacent an edge of the lightguide. The bottom housing can define an opening through which light emitted by the lightguide exits the luminaire.

Claims

1. A luminaire comprising:

a top housing fastened to a bottom housing, the top housing comprising a rib, wherein an inner surface of the top housing defines a concavity in which a power supply is disposed;

a lightguide disposed between the top housing and the bottom housing, the rib securing the lightguide against a gasket, wherein the gasket is located between the lightguide and the bottom housing; and

a light source disposed between the top housing and the bottom housing and further disposed adjacent a perimeter edge surface of the lightguide.

2. The luminaire of claim 1, wherein the bottom housing comprises an aperture through which light from the lightguide is emitted from the luminaire.

3. The luminaire of claim 1, wherein the luminaire can be mounted on a post.

4. The luminaire of claim 1, wherein the rib is one of a plurality of ribs and each of the plurality of ribs extends from an inner surface of the top housing toward the lightguide.

5. The luminaire of claim 4, wherein the plurality of ribs maintain alignment between the light source and the perimeter edge surface of the lightguide so that light emitted by the light source enters the perimeter edge surface of the lightguide.

6. The luminaire of claim 1, wherein each of the plurality of ribs comprises a base portion attached to the inner surface of the top housing and an extension portion that extends through a wire tray towards the lightguide when the luminaire is assembled.

7. The luminaire of claim 1, wherein an outer perimeter of the top housing and an outer perimeter of the bottom housing are circular.

8. The luminaire of claim 1, further comprising an outer seal disposed between an outer perimeter of the top housing and an outer perimeter of the bottom housing.

9. The luminaire of claim 1, wherein one or more supports connect the bottom housing to a base of the luminaire.

10. The luminaire of claim 1, wherein the light source comprises one or more light emitting diodes disposed to direct light into the perimeter edge surface of the lightguide.

11. A luminaire comprising:

a top housing fastened to a bottom housing, the top housing comprising a rib;

a lightguide disposed between the top housing and the bottom housing;

a reflector located on a top surface of the lightguide, wherein the rib engages the reflector and the rib secures the lightguide against a gasket, wherein the gasket is located between the lightguide and the bottom housing; and

a light source disposed between the top housing and the bottom housing and further disposed adjacent a perimeter edge surface of the lightguide.

12. The luminaire of claim 11, wherein the bottom housing comprises an aperture through which light from the lightguide is emitted from the luminaire.

13. The luminaire of claim 11, wherein an inner surface of the top housing defines a concavity in which a power supply is disposed.

14. A luminaire comprising:

a top housing fastened to a bottom housing, the top housing comprising a rib;

a lightguide disposed between the top housing and the bottom housing, the rib securing the lightguide against a gasket, wherein the gasket is located between the lightguide and the bottom housing;

a light source disposed between the top housing and the bottom housing and further disposed adjacent a perimeter edge surface of the lightguide; and

a wire tray with flanges for routing of electrical wires from at least one power supply to the light source.

15. The luminaire of claim 14, wherein the wire tray comprises at least one aperture through which the rib passes to secure the lightguide against the gasket.

16. The luminaire of claim 14, wherein the wire tray comprises a wire tray outer perimeter, the wire tray outer perimeter comprising a plurality of apertures for receiving fasteners for fastening the wire tray to the bottom housing.

17. The luminaire of claim 14, wherein the wire tray is fastened to the bottom housing.

18. The luminaire of claim 14, wherein the wire tray comprises a central aperture through which light can pass from the lightguide.

19. The luminaire of claim 14, wherein the light source is further disposed between the wire tray and the bottom housing.

20. The luminaire of claim 19, wherein the light source is further disposed outside a perimeter of the gasket and within a perimeter of an outer seal.