Lighting device having adjustable reflector

• US 9,234,645 B2
• Filed: 07/03/2012
• Issued: 01/12/2016
• 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:
  US13/541,247
• Publication Number:
  US 20130010470A1
• Time in Patent Office: 1,288 Days
• Field of Search: 362/512, 362/187, 362/188, 362/249.07, 362/277, 362/278, 362/281, 362/297, 362/304, 362/346, 362/350, 362/294
• US Class Current: 1/1
• 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 body, a light emitting module disposed on the body, an optical member disposed on the light emitting module and configured to be movable up and down, and a reflector disposed between the body and the optical member; a shape of the reflector being changed by moving the optical member, such that the light distribution angle and range of light reflected by the reflector and passing through the optical member are adjusted.

Claims

1. A lighting device comprising:

a body;

a light emitting module which is disposed on the body;

an optical member which is disposed on the light emitting module and is installed to be movable along an optical axis of the lighting device; and

a reflector which is disposed between the body and the optical member and reflects light emitted from the light emitting module,

wherein a shape of the reflector is changed according to the moving of the optical member and direct pressure of the optical member on the reflector,

wherein a light distribution angle and a light distribution range of light passing through the optical member are variable depending on the change of the shape of the reflector,

wherein the reflector includes a plurality of reflection plates, and wherein the light emitting module includes a hinge in order that each of the reflection plates is movably coupled to the body, and

wherein the reflection plates are automatically folded by gravity, and wherein the optical member controls unfolding of the reflection plates.

2. The lighting device of claim 1, wherein the reflection plates are fixed to a position set by a user, and wherein the optical member controls the unfolding of the reflection plates.

3. The light device of claim 1, further comprising a cover which is disposed on an outer portion of the optical member and is coupled to the body, wherein the cover is movable along the optical axis of the lighting device.

4. The lighting device of claim 3, wherein the cover is rotatably coupled to the body and moves along the optical axis according to the rotary motion.

5. The lighting device of claim 3, wherein when the cover moves up, a first end of the reflector becomes closer to the body, and wherein when the cover moves down, a second end of the reflector becomes farther from the body.

6. The lighting device of claim 1, wherein the reflection plates are unfolded when the optical member becomes farther from the light emitting module, and the reflection plates are folded when the optical member becomes closer to the light emitting module.

7. The lighting device of claim 6, wherein the hinge is coupled to one end of the reflection plate, and wherein the reflection plate is coupled movably on an axis of the one end of the reflection plate.

8. The lighting device of claim 7, wherein a width of each of the reflection plates becomes greater toward the other end from the one end thereof.

9. A lighting device comprising:

a body which has one side;

a light emitting module which is disposed on the one side of the body;

a cap which is disposed on the light emitting module and through which light emitted from the light emitting module passes;

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

a cover which includes an opening in which the cap is disposed and is coupled to the body in such a manner as to be movable up and down on the one side of the body,

wherein an inclination of the reflector based on the one side of the body is changed by the moving cover and direct pressure of the cap on the reflector,

wherein the reflector includes a plurality of reflection plates, and wherein the body includes a hinge in order that each of the reflection plates is movably coupled to a surface of the body, and

wherein the reflection plates are automatically folded by gravity, and wherein the cap controls unfolding of the reflection plates.

10. The lighting device of claim 9, wherein the cover is rotatably coupled to the body and moves along the optical axis according to the rotary motion.

11. The lighting device of claim 9, wherein the reflection plates are fixed to a position set by a user, and wherein the optical member controls the unfolding of the reflection plates.

12. The lighting device of claim 9, wherein a width of each of the reflection plates becomes greater toward a second end of the reflector from a first end of the reflector.

13. The lighting device of claim 9, wherein one end of the reflector is coupled to the light emitting module, and wherein the other end of the reflector contacts with the cap.

14. The lighting device of claim 13, wherein when the cover moves up, the other end of the reflector becomes closer to the one side of the body, and wherein when the cover moves down, the other end of the reflector becomes farther from the one side of the body.

15. The lighting device of claim 13, wherein the hinge is coupled to the one end of the reflector, and wherein the reflector is automatically folded by gravity, and wherein the cap controls the unfolding of the reflector.

16. The lighting device of claim 13, wherein the one side of the body includes the hinge coupled to the one end of the reflector, and wherein the reflector is fixed to a position set by a user, and wherein the cap controls the unfolding of the reflector.