Lighting device

• US 8,356,915 B2
• Filed: 10/28/2011
• Issued: 01/22/2013
• Est. Priority Date: 08/19/2009
• Status: Active Grant

• Current Assignee: Suzhou Lekin Semiconductor Company Limited
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Kim, Kwang Soo, Kong, Kyung Il, Kim, Hwayoung, Hong, Sang Jun
• Primary Examiner(s): MAY, ROBERT J
• Application Number:
  US13/283,897
• Publication Number:
  US 20120039067A1
• Time in Patent Office: 452 Days
• Field of Search: 362/217.01, 362/217.1, 362/217.11, 362/217.12, 362/217.15, 362/217.16, 36224902-24903, 36224905-24906, 362/646, 362/306, 362/362, 362/220, 362/225, 362/235, 362/247, 362/249.01
• US Class Current: 362/249.01
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• CPC Class Codes: F21S 8/033 the surface being a wall or like vertical structure, e.g. building facade
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: F21V 13/08 the elements being filters or photoluminescent elements and reflectors
• CPC Class Codes: F21V 17/162 the parts being subjected to traction or compression, e.g. coil springs
• CPC Class Codes: F21V 19/004 by deformation of parts or snap action mountings, e.g. using clips
• CPC Class Codes: F21V 23/0442 activated by means of a sensor, e.g. motion or photodetectors
• CPC Class Codes: F21V 7/00 Reflectors for light sources characterised by cooling arrangements F21V29/505
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear 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

Disclosed is a lighting device that comprises a first body having a first sloping surface toward a reflector; a second body having a second sloping surface toward the reflector; a middle body having an insertion groove formed respectively on both sides of the lower part of the middle body, and allowing the first body and the second body to be coupled to both sides of the middle body by inserting a first hinge and a second hinge into the insertion groove, respectively; and a main light emitting device module disposed on a first sloping surface and a second sloping surface respectively, wherein the first sloping surface and the second sloping surface face outward with respect to the middle body.

Claims

1. A lighting device comprising:

a first body having a first sloping surface facing toward a reflector, the first sloping surface formed on a first side of a lower part of the first body, and having a first hinge protruding formed on a second side of the lower part of the first body;

a second body having a second sloping surface facing toward the reflector, the second sloping surface formed on a first side of a lower part of the second body, and having a second hinge protruding formed on a second side of the lower part of the second body;

a middle body having an insertion groove formed respectively on two sides of the lower part of the middle body, and allowing the first body and the second body to be coupled to two sides of the middle body by inserting the first hinge and the second hinge into the insertion groove respectively; and

a main light emitting device module disposed on the first sloping surface and the second sloping surface respectively,

wherein the first sloping surface and the second sloping surface face outward with respect to the middle body.

2. The lighting device of claim 1, wherein a light source unit is comprised in the lighting device, and wherein the light source unit comprises the first body, the second body, the middle body and a spring, the spring being disposed between the first body and the second body, and providing an elastic force to the first body and the second body widening a space between the first body and the second body.

3. The lighting device of claim 1, further comprising a limit switch being disposed on two sides of the middle body, connecting and disconnecting electric power supplied to the main light emitting device module in accordance with an approach distance between the first body and the middle body and in accordance with an approach distance between the second body and the middle body.

4. The lighting device of claim 1, wherein a first light emitting groove is formed on one side of the lower part of the first body, and wherein a second light emitting groove is formed on one side of the lower part of the second body, and wherein the first sloping surface is a basal surface of the first light emitting groove, and wherein the second sloping surface is a basal surface of the second light emitting groove, and wherein the main light emitting device module is disposed in the first light emitting groove and the second light emitting groove, and comprises:

a first substrate disposed on the basal surfaces of the first and the second light emitting grooves along the first and the second sloping surfaces respectively;

a plurality of main light emitting devices disposed on the first substrate; and

a first optical structure disposed on the plurality of the main light emitting devices.

5. The lighting device of claim 4, wherein the first optical structure comprises at least one of a lens, a diffusion sheet and a phosphor luminescent film (PLF).

6. The lighting device of claim 1, further comprising an auxiliary light emitting device module disposed on a basal surface of the lower part of the middle body.

7. The lighting device of claim 6, wherein a third light emitting groove is formed on the basal surface of the lower part of the middle body, and wherein the auxiliary light emitting device module is disposed within the third light emitting groove, and comprises:

a second substrate disposed on the inner upper surface of the third light emitting groove;

a plurality of auxiliary light emitting devices disposed on the second substrate; and

a second optical structure disposed on the plurality of the auxiliary light emitting devices.

8. The lighting device of claim 7, wherein the second optical structure comprises at least one of a lens, a diffusion sheet and a phosphor luminescent film (PLF) and has at least one color.

9. The lighting device of claim 1, wherein the first body comprises a first light emitting groove using the first sloping surface as a basal surface, and wherein the second body comprises a second light emitting groove using the second sloping surface as a basal surface, and wherein a plurality of light emitting devices is provided in the first light emitting groove along the first sloping surface, and wherein a plurality of light emitting devices is provided in the second light emitting groove along the second sloping surface, and

wherein the first light emitting groove and the second light emitting groove comprise a projection part formed in the first light emitting groove and the second light emitting groove respectively, the projection part blocking the light emitted directly from the plurality of the light emitting devices to the outside of the housing.

10. A lighting device comprising:

a housing;

a coupling member disposed on a basal surface of the housing;

a first reflector disposed on a first side of the coupling member;

a second reflector disposed on a second side of the coupling member; and

a light source unit which includes a portion coupled to the coupling member and emits light toward at least one of the first reflector and the second reflector,

wherein the light source unit includes a body including a first sloping surface facing toward the first reflector and a second sloping surface facing toward the second reflector, and includes a plurality of light emitting devices disposed on the first and the second sloping surfaces,

wherein the coupling member has an insertion groove, and

wherein a third groove is formed on an inner surface of the insertion groove, wherein a projection is formed in the upper end of the light source unit, and wherein the projection is inserted into the third groove.

11. The lighting device of claim 10, wherein the housing or the coupling unit is formed of a metallic material including at least one of Al, Sn, Ni, Ag, Cu, Ti, Mo, W, Au or Pt.

12. The lighting device of claim 10, wherein at least one of the first reflector and the second reflector has a parabolic shape.

13. The lighting device of claim 10, wherein at least one of the first reflector and the second reflector is formed of a metallic material or a resin material.

14. The lighting device of claim 10, wherein the surface of at least one of the first reflector and the second reflector is coated with a diffusion sheet.

15. The lighting device of claim 10, wherein the coupling member is formed extending in the middle portion of the basal surface of the housing in a first direction.

16. The lighting device of claim 10, wherein the insertion groove into which at least one portion of the light source unit is inserted is formed in a middle portion of the coupling member.

17. The lighting device of claim 16, wherein at least one first connection terminal is formed in the insertion groove, and wherein at least one second connection terminal coupled to the at least one first connection terminal is formed on the top surface of the light source unit.

18. The lighting device of claim 10, wherein the light source unit is formed extending in a first direction.

19. The lighting device of claim 10, wherein a light emitting groove is formed in the first sloping surface and the second sloping surface, and wherein the plurality of the light emitting devices are disposed in the light emitting groove.