Lighting module and lighting device

• US 9,970,647 B2
• Filed: 04/22/2015
• Issued: 05/15/2018
• Est. Priority Date: 02/21/2011
• Status: Active Grant

• Current Assignee: Suzhou Lekin Semiconductor Company Limited
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Kim, Kwang Soo, Shin, Young Ho, Park, Ki Man, Je, Bu Kwan, Park, Sang Hoon, Yang, Ye Seul
• Primary Examiner(s): Harris, William N
• Application Number:
  US14/693,717
• Publication Number:
  US 20150285486A1
• Time in Patent Office: 1,119 Days
• Field of Search: 362267, 362158, 362240
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21S 2/005 of modular construction
• 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 29/507 of means for protecting lighting devices from damage, e.g. housings
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/713 in direct thermal and mechanical contact of each other to form a single system
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/85 characterised by the material liquid coolants F21V29/56
• CPC Class Codes: F21V 29/87 Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: F21V 5/007 Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane combination of two or more refractors F21V5/008
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21V 5/10 comprising photoluminescent material
• CPC Class Codes: F21W 2131/103 of streets or roads
• 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 2115/10 Light-emitting diodes [LED]

Abstract

A lighting module may be provided that includes: a bottom plate having thermally a heat radiating characteristic; a light emitter comprising a substrate disposed on the bottom plate and a plurality of light emitting devices disposed on the substrate; an optical structure covering the light emitter, the optical structure comprising an outer frame surrounding the substrate and a plurality of lenses corresponding to the plurality of the light emitting devices; an upper case covering the optical structure and coupled to the bottom plate and having an opening for allowing lights which have passed through the plurality of lenses of the optical structure; and a gasket disposed between the outer frame of the optical structure and the upper case.

Claims

1. A lighting module comprising:

a bottom plate having a heat radiating characteristic;

a light emitter comprising a substrate disposed on the bottom plate and a plurality of light emitting devices disposed on the substrate;

an optical structure covering the light emitter, the optical structure comprising an outer frame surrounding the substrate and a plurality of lenses corresponding to the plurality of light emitting devices;

a case covering the optical structure and coupled to the bottom plate and having an opening for allowing lights which have passed through the plurality of lenses of the optical structure to be emitted by the lighting module; and

a gasket disposed between the outer frame of the optical structure and the case,

wherein the outer frame of the optical structure comprises a side surrounding an outer circumference surface of the substrate,

wherein the side of the outer frame of the optical structure has a recess,

wherein the gasket includes a projection extending from an outer circumferential surface of the gasket, and

wherein the projection of the gasket is coupled to the recess of the outer frame.

2. The lighting module of claim 1, wherein a diameter of the case is greater than a diameter of the gasket and a diameter of the bottom plate.

3. The lighting module of claim 1, further comprising a heat radiating plate disposed between the substrate and the bottom plate,

wherein the heat radiating plate is a thermal conduction silicon pad or a thermal conductive tape.

4. The lighting module of claim 1, wherein the plurality of lenses corresponds to the plurality of the light emitting devices one-to-one.

5. The lighting module of claim 1, wherein the gasket is disposed on the outer frame of the optical structure.

6. The lighting module of claim 1, wherein the case has a through-hole,

wherein the bottom plate has a locking recess, and

wherein the lighting module further comprises a coupling screw which passes through the through-hole and is inserted and fixed to the locking recess.

7. The lighting module of claim 1,

wherein a side of the case has a recess corresponding to the recess of the outer frame, and

wherein the gasket is further coupled to the recess of the case.

8. The lighting module of claim 1, wherein the gasket comprises a top surface contacting an edge part of the case and a bottom surface contacting the optical structure,

wherein each of the top surface and the bottom surface of the gasket has a recess,

wherein the case comprises a projection engaging the recess of the top surface of the gasket, and

wherein the optical structure comprises a projection engaging the recess of the bottom surface of the gasket.

9. The lighting module of claim 1, wherein the case comprises a side wall comprising a projection part extending from a bottom surface of the side wall, and

wherein the projection part surrounds an outmost surface of the bottom plate.

10. The lighting module of claim 1, wherein the outer frame includes a straight part, and

wherein the gasket includes a straight part.

11. A lighting module comprising:

a bottom plate having a heat radiating characteristic;

a light emitter comprising a substrate disposed on the bottom plate and a plurality of light emitting devices disposed on the substrate;

an optical structure covering the light emitter, the optical structure comprising an outer frame surrounding the substrate and a plurality of lenses corresponding to the plurality of the light emitting devices;

a case covering the optical structure and coupled to the bottom plate and having an opening for allowing lights which have passed through the plurality of lenses of the optical structure to be emitted by the lighting module; and

a gasket surrounding the outer frame of the optical structure and disposed on the bottomplate,

wherein the outer frame of the optical structure comprises a side surrounding an outer circumference surface of the substrate,

wherein the side of the outer frame of the optical structure has a recess,

wherein a side of the case has a recess corresponding to the recess of the outer frame,

wherein the gasket includes a projection extending from an outer circumference surface of the gasket, and

wherein the projection of the gasket is coupled to the recess of the outer frame and the recess of the case.

12. The lighting module of claim 11, wherein the gasket comprises a stepped surface, and

wherein the case comprises a side wall comprising a stepped surface contacted with the stepped surface of the gasket.

13. The lighting module of claim 11, wherein the gasket contacts a side surface of the substrate.

14. The lighting module of claim 11, wherein the gasket comprises a bottom surface contacting the bottom plate, and

wherein the bottom surface of the gasket has a recess.

15. The lighting module of claim 11, wherein a diameter of the case is greater than a diameter of the gasket.

16. The lighting module of claim 11, further comprising a heat radiating plate disposed between the substrate and the bottom plate,

wherein the heat radiating plate is a thermal conduction silicon pad or a thermal conductive tape.

17. The lighting module of claim 11, wherein the plurality of lenses corresponds to the plurality of the light emitting devices one-to-one.

18. The lighting module of claim 11, wherein the case has a through-hole,

wherein the bottom plate has a locking recess, and

wherein the lighting module further comprises a coupling screw which passes through the through-hole and is inserted and fixed to the locking recess.

19. The lighting module of claim 11, wherein the case comprises a side wall comprising a projection part extending from a bottom surface of the side wall, and

wherein the projection part surrounds a side surface of the bottom plate.

20. The lighting module of claim 11, wherein the outer frame includes a straight part, and

wherein the gasket includes a straight part.