Lighting device with selectively controlled concentric light emitting modules

• US 9,696,007 B2
• Filed: 01/08/2015
• Issued: 07/04/2017
• Est. Priority Date: 07/06/2011
• Status: Active Grant

• Current Assignee: Suzhou Lekin Semiconductor Company Limited
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Min, Byeong Guk, Kong, Kyung Il
• Primary Examiner(s): Negron, Ismael
• Application Number:
  US14/592,019
• Publication Number:
  US 20150124446A1
• Time in Patent Office: 908 Days
• Field of Search: 362514, 362187, 362188, 36224907, 362277, 362278, 362281, 362297, 362304, 362350, 362294, 362455, 362456
• CPC Class Codes: F21K 9/233 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• CPC Class Codes: F21V 13/08 the elements being filters or photoluminescent elements and reflectors
• CPC Class Codes: F21V 14/04 by movement of reflectors in vehicle head lamps F21S41/675
• CPC Class Codes: F21V 14/06 by movement of refractors in vehicle head lamps F21S41/635
• CPC Class Codes: F21V 23/008 the casing being outside the housing of the lighting device
• CPC Class Codes: F21V 23/04 the elements being switches safety devices F21V25/00
• 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 29/89 Metals
• CPC Class Codes: F21V 7/00 Reflectors for light sources characterised by cooling arrangements F21V29/505
• CPC Class Codes: F21V 7/0025 Combination of two or more reflectors for a single light source array of reflectors for a cluster of light sources F21V7/0083
• CPC Class Codes: F21V 7/043 with cylindrical surface
• CPC Class Codes: F21V 7/16 with provision for adjusting the curvature
• CPC Class Codes: F21V 7/18 with provision for folding or collapsing
• CPC Class Codes: F21V 7/24 characterised by the material
• CPC Class Codes: F21V 7/28 characterised by coatings
• 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 device includes a driving unit, a body arranged under the driving unit, a first light emitting module powered by the driving unit and disposed in a first area of the body, a second light emitting module powered by the driving unit and disposed in a second area of the body surrounding the first area, a first reflector surrounding the first light emitting module, and a second reflector surrounding the second light emitting module, and the first reflector. The driving unit controls the first light emitting module and the second light emitting module independently of each other.

Claims

1. A lighting device comprising:

a driving unit;

a body which is disposed under the driving unit and includes one side including a first area and a second area surrounding the first area;

a first light emitting module which receives electric power from the driving unit and is disposed in the first area of the body;

a second light emitting module which receives electric power from the driving unit and is disposed in the second area of the body;

a first reflector which is disposed on the one side of the body and surrounds the first light emitting module;

a second reflector which is disposed on the one side of the body and surrounds the second light emitting module, wherein the driving unit controls the first light emitting module and the second light emitting module independently of each other; and

a cover coupled to the body in such a manner as to be movable up and down with respect to the body, and wherein the driving of the first and the second light emitting modules is controlled by the moving of the cover.

2. The lighting device of claim 1, wherein an inclination of the first reflector based on the one side of the body is different from an inclination of the second reflector based on the one side of the body.

3. The lighting device of claim 1, wherein the first light emitting module is disposed in the central portion of the one side of the body, and wherein the second light emitting module is disposed on the outer circumference of the one side of the body.

4. The lighting device of claim 1, wherein the cover is rotatably coupled to the body and moves up and down according to the rotary motion.

5. The lighting device of claim 1, further comprising:

the cover disposed on the first and the second light emitting modules and the first and the second reflectors, and the cover is connected to the body and has an opening; and

a lens disposed in the opening of the cover.

6. The lighting device of claim 5, wherein the body comprises a switch determining the driving of at least one of the first and the second light emitting modules, and wherein the switch is disposed on a coupling portion between the cover and the body, and is operated by contact with the cover.