Lighting device

Patent metadata

Field	Value
Publication number	US-2016245481-A1
Application number	US-201615143678-A
Country	US
Kind code	A1
Filing date	May 2, 2016
Priority date	Jul 15, 2011
Publication date	Aug 25, 2016
Grant date	—

Abstract

A lighting device may be provided that comprises a housing including an inner surface; a light source unit comprising a body disposed under the housing and a light emitting module disposed under the body; and a reflector disposed between the housing and the body, wherein the body comprises a top surface disposed under the inner surface of the housing and a bottom surface, and wherein the light emitting module is disposed on the bottom surface.

First claim

What is claimed is:

1 . A lighting device comprising:
a housing including an inner surface; a light source unit comprising a body disposed under the housing and a light emitting module disposed under the body; and a reflector disposed between the housing and the body, wherein the body comprises a top surface disposed under the inner surface of the housing and a bottom surface, and wherein the light emitting module is disposed on the bottom surface.

2 . The lighting device of claim 1 , further comprising a coupling cap coupling both ends of the body, wherein the body has a recess, wherein the coupling cap has a through-hole formed at a position corresponding to the recess, and
wherein the lighting device comprises a screw pass through the through-holes of the coupling cap and is coupled to the recess of the body.

3 . The lighting device of claim 1 , further comprising a coupler coupling the body to the housing.

4 . The lighting device of claim 3 , wherein the coupler grips an upper portion of the body.

5 . The lighting device of claim 3 , wherein the coupler is coupled to the inner surface of the housing, and wherein the coupler has an opening into which the body is inserted.

6 . The lighting device of claim 3 , wherein the coupler is coupled to the inner surface of the housing, wherein the coupler includes an extension projection disposed at both ends of the coupler, and wherein the body has a side recess in which a portion of the extension projection is disposed.

7 . The lighting device of claim 6 , wherein the extension projection supports one side of the reflector.

8 . The lighting device of claim 3 , wherein the coupler is screw, and wherein the top surface of the body has a screw recess into which the screw is inserted.

9 . The lighting device of claim 1 , further comprising an optical cover covering the light emitting module and coupled to body, and wherein the optical cover transmits a part of light emitted from the light source unit and reflects the other part of the light to the reflector.

10 . The lighting device of claim 9 , wherein the body includes a projection extended from a side surface of the body, wherein the optical cover includes a projection extended from an upper portion of the optical cover, and wherein the projection of the optical cover is disposed on the projection of the body.

11 . The lighting device of claim 9 , wherein the optical cover comprises a first cover disposed under the light source unit and a second cover connecting the body with the first cover, wherein the first cover transmits and reflects the light emitted from the light source unit, and wherein the second cover transmits the light reflected from the first cover.

12 . The lighting device of claim 11 , wherein the second cover comprises a plurality of protrusions extended from an outer surface of the second cover.

13 . The lighting device of claim 11 , wherein the first cover comprises an extension part extending from both ends of the first cover.

14 . The lighting device of claim 9 , further comprising a protective cover between the light source unit and the optical cover, wherein the optical cover and the protective cover comprise at least one of a lens, a diffusion sheet and a phosphor luminescent film (PLF).

15 . A lighting device comprising:
a housing including an inner surface; a light source unit comprising a body disposed under the housing and a light emitting module disposed under the body; and an optical cover disposed in the housing, covering the light emitting module, and coupled to body, wherein the optical cover transmits a part of light emitted from the light source unit and reflects the other part of the light to the housing, wherein the body comprises a top surface disposed under the inner surface of the housing and a bottom surface, and wherein the light emitting module is disposed on the bottom surface.

16 . The lighting device of claim 15 , wherein the body is symmetrical, wherein the body comprises a first projection, a second projection and a lower projection, wherein the first projection projects outwardly from both upper sides of the body, wherein the second projection projects outwardly from both lower sides of the body, and wherein the lower projection projects downwardly from both ends of the bottom surface of the body.

17 . The lighting device of claim 16 , wherein the second projection becomes closer to the top surface of the body the farther it is from the body, and wherein an upper portion of the optical cover is coupled to the second projection.

18 . The lighting device of claim 16 , further comprising a coupler coupling the body to the housing, wherein the coupler is screw, and wherein the top surface of the body has a screw recess into which the screw is inserted.

19 . The lighting device of claim 16 , further comprising a coupling cap coupling both ends of the body,
wherein the body has a recess, wherein the coupling cap has a through-hole formed at a position corresponding to the recess, and wherein the lighting device comprises a screw pass through the through-holes of the coupling cap and is coupled to the recess of the body.

20 . The lighting device of claim 16 , further comprising a protective cover between the light source unit and the optical cover, wherein the optical cover and the protective cover comprise at least one of a lens, a diffusion sheet and a phosphor luminescent film (PLF).

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Jin Wook
• Jeon Ji Hwan
• Hong Sang Jun
• Kwak Young Kuk

Classifications

• F21V7/005

  with an elongated shape to cooperate with linear light sources · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V3/049

  Patterns or structured surfaces for diffusing light, e.g. frosted surfaces · CPC title

• F21V7/0008

  providing for indirect lighting · CPC title

• F21V3/02

  characterised by the shape · CPC title