Lighting module and lighting apparatus having same

Patent metadata

Field	Value
Publication number	US-11164993-B2
Application number	US-201816760659-A
Country	US
Kind code	B2
Filing date	Nov 7, 2018
Priority date	Nov 14, 2017
Publication date	Nov 2, 2021
Grant date	Nov 2, 2021

Abstract

Lighting module disclosed in an embodiment of the invention, a substrate; a plurality of light emitting devices disposed on the substrate; a first reflective layer disposed on the substrate; a resin layer disposed on the first reflective layer and the light emitting device; and a second reflective layer disposed on the resin layer, wherein the resin layer is a front side surface on which light generated from the plurality of light emitting devices is emitted, a rear side surface facing the front side surface, and first and second side surfaces connecting the front side surface and the rear side surface with each other. A distance between the first reflective layer and the second reflective layer is smaller than a distance between the front side surface and the rear side surface of the resin layer, and the front side surface of the resin layer has a plurality of convex portions convex toward the front side surface from the light emitting device and a plurality of concave portions recessed in a direction of the rear side surface.

First claim

The invention claimed is:

1. A lighting module comprising:
a substrate;
a light emitting device disposed on the substrate;
a first reflective layer disposed on the substrate;
a resin layer disposed on the first reflective layer; and
a second reflective layer disposed on the resin layer,
wherein the resin layer includes a front side surface through which light generated from the light emitting device is emitted, and
wherein the front side surface of the resin layer includes a plurality of convex portions and a plurality of concave portions.

2. The lighting module of claim 1 ,
wherein the light emitting device has a plurality arranged in a first direction,
wherein the resin layer is disposed around the plurality of light emitting devices,
wherein the resin layer includes a rear side surface facing the front side surface, and first and second side surfaces opposite to each other connecting the front side surface and the rear side surface,
wherein a distance between the first reflective layer and the second reflective layer is smaller than a distance between the front side surface and the rear side surface of the resin layer,
wherein each of the plurality of convex portions protrudes convexly toward the front side surface from the light emitting device, and
wherein each of the plurality of concave portions is recessed in a direction of the rear side surface in a region between the plurality of convex portions.

3. The lighting module of claim 2 ,
wherein the first reflective layer has a hole through which the plurality of light emitting devices,
wherein the first and second reflective layers face each other on upper and lower surfaces of the resin layer.

4. The lighting module of claim 2 ,
wherein a distance between the first and second side surfaces of the resin layer is greater than a distance between a high point of the convex portion and the rear side surface,
wherein the first and second side surfaces of the resin layer are side surfaces between the first and second reflective layers, and
wherein the convex portion faces the exit surface of the light emitting device.

5. The lighting module of claim 2 ,
wherein the convex portion is a lens portion having a curved surface convex in a direction of the front side surface in the resin layer, and
wherein a distance from a high point of the lens portion to a center of the light emitting device is maximum.

6. The lighting module of claim 5 ,
wherein the lens portion has a thickness equal to a thickness of the resin layer between the first and second reflective layers, and
wherein the thickness of the resin layer is twice or less a thickness of the light emitting device.

7. The lighting module of claim 5 ,
wherein the plurality of convex portions overlaps the plurality of light emitting devices in a second direction,
wherein each of the concave portions overlaps a region between the plurality of light emitting devices in the second direction, and
wherein the first and second reflective layer overlap each of the convex portions in a vertical direction.

8. The lighting module of claim 5 ,
wherein the first and second reflective layers have a same shape as shape of each of the convex portions and the concave portions disposed on the front side surface of the resin layer,
wherein the substrate has a same shape as the shape of each of the convex portion and the concave portion disposed on the front side surface of the resin layer.

9. The lighting module of claim 5 ,
wherein the plurality of convex portions includes first and second convex portions,
wherein the plurality of light emitting devices includes first and second light emitting devices adjacent to each other,
wherein the first convex portion overlaps the first light emitting device and the second convex portion overlaps the second light emitting device in a second direction from the rear side surface of the resin layer toward the front side surface,
wherein the concave portion has a curved surface concave between the first and second convex portions in the direction of the rear side surface and correspond to a region between the first and second light emitting devices.

10. A lighting module comprising:
a substrate;
a plurality of light emitting devices disposed on the substrate;
a first reflective layer disposed on the substrate;
a resin layer disposed on the first reflective layer; and
a second reflective layer disposed on the resin layer,
wherein the resin layer includes a front side surface through which light generated from the plurality of light emitting devices is emitted,
wherein the front side surface of the resin layer includes a plurality of convex portions and a plurality of concave portions,
wherein the plurality of convex portions and the plurality of concave portions have the same height,
wherein the plurality of light emitting devices includes a first light emitting device, a second light emitting device, and a third light emitting device disposed between the first light emitting device and the second light emitting device, and
wherein the plurality of convex portions includes a first convex portion facing the first light emitting device, a second convex portion facing the second light emitting device and a third convex portion facing the third light emitting device.

11. The lighting module of claim 10 ,
wherein each of the plurality of concave portions is connected between the plurality of convex portions and is arranged concavely from two adjacent convex portions toward the rear surface of the resin layer.

12. The lighting module of claim 10 ,
wherein one side of the second reflective layer and one side of the substrate are disposed on the front side surface of the resin layer, and
wherein one side of the second reflective layer and one side of the substrate have a same shape as a shape of each of the plurality of convex portions and each of the plurality of concave portions.

13. A lighting module comprising:
a substrate;
a plurality of light emitting devices disposed on the substrate;
a first reflective layer disposed on the substrate;
a resin layer disposed on the first reflective layer; and
a second reflective layer disposed on the resin layer,
wherein the plurality of light emitting devices is disposed between the substrate and the second reflective layer,
wherein the resin layer is disposed between the first reflective layer and the second reflective layer,
wherein the resin layer covers surfaces of the plurality of light emitting devices,
wherein each of the plurality of light emitting devices has an exit surface on one side thereof,
wherein the resin layer has a front side surface facing at least one of the exit surfaces of the plurality of light emitting devices,
wherein the resin layer includes a plurality of convex portions and a plurality of concave portions, and
wherein each of the plurality of convex portions faces the exit surface of each of the plurality of light emitting devices.

14. The lighting module of claim 13 ,
wherein a radius of curvature of at least one of the convex portions is greater than a radius of curvature of at least one of the concave portions.

15. The lighting module of claim 13 ,
wherein a width of the resin layer is greater than an interval between the front side surface and a rear side surfaces of the resin layer in a direction of connecting the plurality of light emitting devices.

16. The lighting module of claim 13 , wherein each of the plurality of light emitting devices has a rear surface on another side thereof, and the resin layer includes a rea

Assignees

• Lg Innotek Co Ltd

Inventors

• Kang Se Eun
• Ko Kwang Hyun
• Park Moo Ryong

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10H20/856

  Reflecting means · CPC title

• H10H20/853

  characterised by their shape · CPC title

• H10H20/855

  Optical field-shaping means, e.g. lenses · CPC title

• H10H20/854

  characterised by their material, e.g. epoxy or silicone resins · CPC title