Lighting device

• US 10,088,115 B2
• Filed: 03/18/2016
• Issued: 10/02/2018
• Est. Priority Date: 11/12/2010
• Status: Active Grant

• Current Assignee: Suzhou Lekin Semiconductor Company Limited
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Lee, Sang Hoon, Shin, Hyun Ha, Woo, Im Je
• Primary Examiner(s): Neils, Peggy
• Application Number:
  US15/074,039
• Publication Number:
  US 20160245467A1
• Time in Patent Office: 928 Days
• 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: F21S 2/005 of modular construction
• 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 8/04 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: F21S 8/043 mounted by means of a rigid support, e.g. bracket or arm
• 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 17/10 characterised by specific fastening means or way of fastening F21V17/02 - F21V17/08 take precedence
• CPC Class Codes: F21V 17/104 using feather joints, e.g. tongues and grooves, with or without friction
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 3/04 characterised by materials, surface treatments or coatings
• CPC Class Codes: F21V 7/0083 Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane combination of two or more reflectors F21V7/0025
• 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 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02F 1/1336 Illuminating devices
• CPC Class Codes: G02F 1/133602 Direct backlight
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133628 with cooling means

Abstract

A lighting device may be provided that includes a plurality of single lighting modules that includes: a case including a bottom plate, a first side wall extending from one side end of the bottom plate and a second side wall extending from the other side end of the bottom plate; a light emitter disposed in the case and including a substrate and a plurality of light emitting devices disposed on the substrate; a reflective plate disposed in the case and disposed on the substrate of the light emitter; a diffuser plate disposed in the case, disposed on the light emitter and coupled between the first side wall and the second side wall; and a connecting member comprising a first connecting member extending from the first side wall of the case and a second connecting member extending from the second side wall of the case, and a bracket connecting adjacent two single lighting modules among the plurality of single lighting modules, wherein the bracket is disposed in a space formed between the two single lighting modules.

Claims

1. A lighting device comprising:

a plurality of single lighting modules that includes;

a case including a bottom plate, a first side wall extending from one side end of the bottom plate and a second side wall extending from the other side end of the bottom plate;

a light emitter disposed in the case and including a substrate and a plurality of light emitting devices disposed on the substrate;

a reflective plate disposed in the case and disposed on the substrate of the light emitter;

a diffuser plate disposed in the case, disposed on the light emitter and coupled between the first side wall and the second side wall; and

a connecting member comprising a first connecting member extending from the first side wall of the case and a second connecting member extending from the second side wall of the case, and

wherein at least one power supply controller is disposed in a space formed between adjacent two single lighting modules among the plurality of single lighting modules,

wherein the power supply controller includes a projection extended from a lower end of the power supply controller, and wherein the first side wall and the second side wall include a coupling recess into which the projection is inserted.

2. The lighting device of claim 1, comprising a bracket connecting the two single lighting modules and disposed in the space, wherein the connecting member includes a first bracket coupler disposed on at least one of the first connecting member and the second connecting member, and wherein the bracket connects the first bracket couplers of the two single lighting modules.

3. The lighting device of claim 2, wherein the first bracket coupler is disposed higher than a top surface of the diffuser plate.

4. The lighting device of claim 2, wherein the first side wall and the second side wall include a second bracket coupler coupled to the bracket.

5. The lighting device of claim 4, wherein the second bracket coupler is disposed lower than a top surface of the diffuser plate.

6. The lighting device of claim 1, wherein the single lighting module further comprises a heat radiator disposed in the case and disposed under the substrate of the light emitter, wherein the bottom plate and the side wall of the case are spaced apart from the heat radiator.

7. The lighting device of claim 6, wherein the heat radiator is disposed at a bottom surface of the substrate.

8. The lighting device of claim 6, wherein the heat radiator is disposed closer to the diffuser plate than the bottom plate.

9. The lighting device of claim 1, wherein the reflective plate includes a bottom reflective plate, two side reflective plates that extend from both ends of the bottom reflective plate, and a fixing protrusion that extends from each of the two side reflective plates, wherein the fixing protrusion is coupled to the first side wall.

10. The lighting device of claim 9, wherein the first side wall has a recess in which the fixing protrusion and one end of the diffuser plate are disposed.

11. A lighting device comprising:

a case including a bottom plate and a side wall extending from both ends of the bottom plate;

a light emitter disposed in the case and including a substrate and a lighting emitting device disposed on the substrate;

a heat radiating plate disposed in the case and disposed under the substrate;

a reflective plate disposed in the case, disposed on the substrate and having a hole into which the light emitting device is inserted;

a diffuser plate disposed in the case and disposed on the lighting emitting device;

a connecting member that extends from the side wall of the case and that includes a bracket coupler on at least one side end of the connecting member,

wherein the lighting emitting device is disposed closer to the diffuser plate than the bottom plate of the case; and

wherein the bottom plate and the side wall of the case are spaced apart from the heat radiating plate.

12. The lighting device of claim 11, wherein the heat radiating plate is disposed closer to the diffuser plate than the bottom plate of the case.

13. The lighting device of claim 11, wherein the heat radiating plate includes a bottom surface apart from the bottom plate of the case and a side surface apart from the side wall of the case.

14. The lighting device of claim 11, wherein the bracket coupler of the connecting member is disposed higher than a top surface of the diffuser plate.

20. The lighting device of claim 11, wherein the heat radiating plate is disposed at a bottom surface of the substrate.

15. A lighting device comprising:

a case including a bottom plate and a side wall extending from both ends of the bottom plate;

a light emitter disposed in the case and including a substrate and a lighting emitting device disposed on the substrate;

a heat radiating plate disposed in the case and disposed under the substrate;

a reflective plate disposed in the case, disposed on the substrate and having a hole into which the lighting emitting device is inserted;

a diffuser plate disposed in the case and disposed on the lighting emitting device;

a connecting member that extends from the side wall of the case and that includes a bracket coupler on at least one side end of the connecting member,

wherein the lighting emitting device is disposed closer to the diffuser plate than the bottom plate of the case,

wherein the reflective plate includes a bottom reflective plate, two side reflective plates that extend from both ends of the bottom reflective plate, and a fixing protrusion that extends from each of the two side reflective plates, wherein the fixing protrusion is coupled to the side wall of the case.

16. The lighting device of claim 15, wherein the side wall has a recess in which the fixing protrusion and one end of the diffuser plate are disposed.

17. A lighting device comprising:

a first lighting module that includes;

a first case including a first bottom plate, a first side wall extending from one side end of the first bottom plate, a second side wall extending from the other side end of the first bottom plate, a first connecting member extending from the first side wall of the first case, and a second connecting member extending from the second side wall of the first case;

a first light emitter disposed on of the first bottom plate of the first case; and

a first diffuser plate disposed on the first light emitter; and

a second light module that includes;

a second case including a second bottom plate, a third side wall extending from one side end of the second bottom plate, a fourth side wall extending from the other side end of the second bottom plate, a third connecting member extending from the third side wall of the second case, and a fourth connecting member extending from the fourth side wall of the second case;

a second light emitter disposed on of the second bottom plate of the second case; and

a second diffuser plate disposed on the second light emitter;

wherein the second connecting member of the first lighting module is coupled to the third connecting member of the second lighting module,

wherein the first case includes an additional member connecting between the first connecting member and the first side wall,

wherein the first case has a closed space formed by the additional member, the first connecting member and the first side wall, and

wherein the first lighting module comprises a reflective plate disposed in the first case and disposed on the first light emitter,

wherein the reflective plate includes a bottom reflective plate, two side reflective plates that extend from both ends of the bottom reflective plate, and a fixing protrusion that extends from each of the two side reflective plates, wherein the fixing protrusion is coupled to the first side wall.

18. The lighting device of claim 17, further comprising a connecting member, wherein the connecting member is connected between the first bottom plate of the first lighting module and the second bottom plate of the second lighting module.

19. The lighting device of claim 17, wherein the first side wall has a recess in which the fixing protrusion and one end of the first diffuser plate are disposed.