Lighting device

Patent metadata

Field	Value
Publication number	US-11022269-B2
Application number	US-201816605836-A
Country	US
Kind code	B2
Filing date	Apr 11, 2018
Priority date	Apr 21, 2017
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

A lighting device according to one embodiment comprises: a housing having an opening; a half mirror member arranged in the opening; a first light source unit for emitting light at the half mirror member; a mirror member for re-reflecting light reflected by the half mirror member; a diffusion plate arranged between the first light source unit and the half mirror member; and a guide unit protruding from the lower surface of the housing, wherein the housing includes a first area and a second area formed by the guide unit, the first light source unit is arranged in the first area and the mirror member is arranged in the second area, and the diffusion plate can be supported by the guide unit. Therefore, the lighting device can implement various three-dimensional effects of an optical image according to a field of view by using the half mirror member and the mirror member during lighting.

First claim

The invention claimed is:

1. A lighting device comprising:
a housing with an opening formed therein;
a half mirror member disposed in the opening;
a first light source portion configured to emit light toward the half mirror member;
a mirror member configured to reflect light reflected by the half mirror member;
a diffusion plate disposed between the first light source portion and the half mirror member; and
a guide portion integrated with a bottom surface of the housing, and protruding from the bottom surface of the housing, the guide portion configured to distinguish the bottom surface of the housing into a first bottom surface and a second bottom surface,
wherein the housing comprises a first area and a second area which are formed by the guide portion,
wherein the first light source portion is disposed in the first area and is disposed on the first bottom surface, and the mirror member is disposed in the second area and is disposed on the second bottom surface, and
wherein the diffusion plate is supported by the guide portion.

2. The lighting device of claim 1 , wherein the guide portion is formed to protrude from the bottom surface, in a first direction, to a certain height (h) above the bottom surface, and the first light source portion and the mirror member are arranged to be spaced at a certain distance d apart due to the guide portion.

3. The lighting device of claim 2 , wherein a light emission surface of the first light source portion is disposed to be spaced at a first gap G 1 apart from the diffusion plate, in the first direction.

4. The lighting device of claim 3 , wherein the first light source portion is formed to have a certain thickness t 1 in the first direction, and the first gap G 1 is adjusted according to the thickness t 1 of the first light source portion.

5. The lighting device of claim 4 , wherein the diffusion plate is disposed to be spaced at a certain second gap G 2 apart from a bottom surface of the half mirror member in the first direction.

6. The lighting device of claim 5 , wherein the diffusion plate is formed to have a certain thickness t 2 in the first direction, and the second gap G 2 is adjusted according to the thickness t 2 of the diffusion plate.

7. The lighting device of claim 5 , wherein the second gap G 2 is greater than the first gap G 1 .

8. The lighting device of claim 1 , wherein a reflective surface of the mirror member is disposed to be spaced at a certain third gap G 3 apart from a bottom surface of the half mirror member in the first direction.

9. The lighting device of claim 8 , wherein the mirror member is formed to have a certain thickness t 3 in the first direction, and the third gap G 3 is adjusted according to the thickness t 3 of the mirror member in the first direction.

10. The lighting device of claim 9 , wherein the reflective surface of the mirror member is disposed to form a certain height difference h 1 from a top surface of the diffusion plate while being disposed to be lower than the top surface of the diffusion plate.

11. The lighting device of claim 10 , wherein the reflective surface of the mirror member is disposed to form a certain height difference h 2 from a light emission surface of the light source portion.

12. The lighting device of claim 11 , wherein the reflective surface of the mirror member is disposed to be inclined at a certain angle θ on the basis of the light emission surface of the light source portion.

13. The lighting device of claim 1 , further comprising a stop lamp portion disposed in the housing,
wherein the stop lamp portion comprises a second printed circuit board and second light sources disposed on the second printed circuit board, and
wherein the second light sources are turned on by a brake of a vehicle being operated.

14. The lighting device of claim 13 , further comprising a third light source disposed on the second printed circuit board and a pattern member disposed on an optical path of the third light source,
wherein the pattern member modifies a shape of light emitted from the third light source.

15. The lighting device of claim 13 , further comprising an image lamp portion disposed between the second light sources of the stop lamp portion.

Assignees

• Lg Innotek Co Ltd

Inventors

• Choi Young Jae
• Kim Seong Jin
• Yang Hyun Duck
• Lim Eay Jin

Classifications

• F21S41/20 Primary

  characterised by refractors, transparent cover plates, light guides or filters · CPC title

• F21W2103/60

  Projection of signs from lighting devices, e.g. symbols or information being projected onto the road · CPC title

• F21S41/00

  Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps (reversing lights F21S43/00) · CPC title

• F21S43/14

  Light emitting diodes [LED] · CPC title

• F21S43/00

  Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights · CPC title