Light module and lighting device having same

Patent metadata

Field	Value
Publication number	US-11125396-B2
Application number	US-202016918043-A
Country	US
Kind code	B2
Filing date	Jul 1, 2020
Priority date	May 4, 2016
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

A lighting module disclosed in an embodiment comprises: a substrate; a light-emitting element arranged on the substrate; and a resin member arranged on the substrate and the light-emitting element. The resin member comprises a plurality of side surfaces and an exit surface on the upper portion thereof. The plurality of side surfaces of the resin member comprise a first side surface adjacent to the light emitting device, a second side surface facing the first side surface, and third and fourth side surfaces arranged between the first and second side surfaces so as to face each other. The exit surface of the resin member comprises a light extraction structure having a large length in a first direction and having a concavo-convex pattern in a second direction that is perpendicular to the first direction. The light emitting device comprises an exit area corresponding to a part of the second side surface in the first direction. The thickness of the second side surface, in connection with the resin member, may be smaller than the thickness of the first side surface.

First claim

The invention claimed is:

1. A lighting module comprising:
a substrate;
a light emitting device disposed on the substrate;
a resin member disposed on the substrate and sealing the light emitting device; and
a reflecting member disposed between the resin member and the substrate,
wherein the resin member includes a plurality of side surfaces and an upper surface,
wherein the plurality of side surfaces includes a first side surface disposed to rear of the light emitting device, a second side surface disposed in front of the light emitting device, and third and fourth side surfaces disposed between both ends of the first and second side surfaces,
wherein the first side surface and the second side surface are opposite to each other,
wherein the light emitting device is closer to the first side surface than the second side surface,
wherein the light emitting device has an emission portion facing a part of the second side surface, and
wherein the upper surface of the resin member includes a reflective pattern on an upper portion of the light emitting device and a light extraction pattern arranged toward the second side surface from the reflective pattern.

2. The lighting module of claim 1 , wherein the third side surface and the fourth side surface extend from the first side surface toward the second side surface with a curved surface.

3. The lighting module of claim 1 , comprising an optical member disposed on the resin member and diffusing light emitted through the resin member.

4. The lighting module of claim 1 , wherein the reflective pattern includes a flat surface and an inclined surface, and
wherein the light extraction pattern includes a flat surface and an inclined surface.

5. The lighting module of claim 1 , wherein the reflective pattern includes a flat surface and a concave surface, and
wherein the light extraction pattern includes at least two of a flat surface, an inclined surface and a concave surface.

6. The lighting module of claim 1 , wherein the light extraction pattern includes a prism-shaped pattern.

7. The lighting module of claim 1 , wherein a height of the first side surface of the resin member is higher than a height of the second side surface.

8. The lighting module of claim 1 , wherein the light extraction pattern of the resin member has a concavo-convex pattern having a long length from the third side surface to the fourth side surface.

9. The lighting module of claim 1 , wherein the light emitting device, the resin member, and the substrate overlap in a vertical direction, and
wherein an upper end height of the second side surface of the resin member is lower than an upper end height of the first side surface.

10. The lighting module of claim 1 , wherein the resin member is arranged in plural on the substrate, and
wherein the resin member is contacted directly with sides of the light emitting device.

11. The lighting module of claim 1 , wherein the resin member includes a first region in which the light emitting device is disposed, and a second region between the first region and the second side surface,
the light extraction pattern is disposed on the first and second regions, and
the light extraction pattern of the second region has a gradually lower height as it is farther from the light emitting device.

12. A lighting module comprising:
a substrate;
a light emitting device disposed on the substrate;
a resin member disposed on the substrate and sealing the light emitting device; and
a reflecting member disposed between the resin member and the substrate,
wherein the resin member includes a plurality of side surfaces and an upper surface,
wherein the plurality of side surfaces includes a first side surface disposed to rear of the light emitting device, a second side surface disposed in front of the light emitting device, and third and fourth side surfaces disposed between both ends of the first and second side surfaces,
wherein the first side surface and the second side surface are opposite to each other,
wherein the light emitting device is closer to the first side surface than the second side surface,
wherein the light emitting device has an emission portion facing a part of the second side surface,
wherein the upper surface of the resin member includes a reflective portion on an upper portion of the light emitting device and a light extraction portion arranged toward the second side surface from the reflective portion,
wherein the resin member includes a first region in which the light emitting device is disposed, and a second region disposed between the first region and the second side surface, and wherein a distance between the first and second side surfaces is greater than a distance between the third and fourth side surfaces.

13. The lighting module of claim 12 , wherein a minimum thickness of the resin member 160 is in a range of 1.4 mm to 2 mm from an upper surface of the reflective member.

14. The lighting module of claim 12 , wherein a maximum thickness of the resin member is in a range of 1.7 mm to 4 mm from an upper surface of the reflective member.

15. The lighting module of claim 12 , a thickness of the first region in the resin member is in a range of 2 mm to 10 mm, and
wherein a thickness of the second region is smaller than the thickness of the first region.

16. The lighting module of claim 12 , wherein the resin member includes first and second resin members adjacent to each other,
wherein the light emitting device includes a first light emitting device disposed adjacent to a first side surface of the first resin member and a second light emitting device disposed adjacent to a first side surface of the second resin member, and
wherein a distance between the first and second light emitting devices is in a range of in a range of 15 to 25 mm.

17. The lighting module of claim 12 , wherein the third side surface and the fourth side surface extend from the first side surface toward the second side surface with a curved surface.

18. The lighting module of claim 12 , comprising an optical member disposed on the resin member and diffusing light emitted through the resin member.

19. The lighting module of claim 12 , wherein the reflective portion includes a flat surface and an inclined surface, and
wherein the light extraction portion includes a flat surface and an inclined surface.

20. The lighting module of claim 12 , wherein a height of the first side surface of the resin member is higher than a height of the second side surface, and
wherein the light emitting device, the resin member, and the substrate overlap in a vertical direction.

Assignees

• Lg Innotek Co Ltd

Inventors

• Hwang Seong Jin
• Kang Se Eun
• Kim Jin Hee
• Jin Gyeong Il

Classifications

• F21S43/28135

  Structures encapsulating the light source · CPC title

• G02F1/133606

  including a specially adapted diffusing, scattering or light controlling members · CPC title

• G02B5/02

  Diffusing elements; Afocal elements · CPC title

• F21W2107/10

  for land vehicles · CPC title

• F21V7/22

  characterised by materials, surface treatments or coatings, e.g. dichroic reflectors · CPC title