LIGHT-EMITTING DIODE LAMPSHADE

• US 20120182743A1
• Filed: 01/18/2011
• Published: 07/19/2012
• Est. Priority Date: 01/18/2011
• Status: Active Grant

• Current Assignee: DBM Reflex Of Taiwan Co., Ltd.
• Original Assignee: DBM Reflex Of Taiwan Co., Ltd.
• Inventors: CHOU, Min-Hwa
• Granted Patent: US 8,272,759 B2
• Time in Patent Office: Days
• US Class Current: 362/351
• CPC Class Codes: F21V 5/007 Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane combination of two or more refractors F21V5/008
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21V 7/0091 using total internal reflection
• 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

An LED lampshade has a body and multiple light concentrators. The body has a light exit plane. The light concentrators are formed on the body. Each light concentrator has a light incident recess, a light transmitting recess and an third concentration wall. The light incident recess has a first concentration wall and a first chamber defined by the first concentration wall. The light transmitting recess corresponds to the light incident recess, and has a second concentration wall, a second chamber defined by the second concentration wall and opposite to the first chamber, and an opening formed through the light exit plane. The third concentration wall is formed around a periphery of the light concentrator. Given the opposite light incident recess and light transmitting recess and the three concentration walls, the LED lampshade enhances light transmittance and concentration therethrough.

Claims

1. An LED lampshade, comprising:

a body having a light exit plane; and

multiple light concentrators formed on the body, each light concentrator having;

a light incident recess having;

a first concentration wall; and

a first chamber defined by the first concentration wall;

a light transmitting recess corresponding to the light incident recess, and having;

a second concentration wall;

a second chamber defined by the second concentration wall and oppositely facing the first chamber; and

an opening formed through the light exit surface of the body; and

an third concentration wall formed around a periphery of the light concentrator.

2. The LED lampshade as claimed in claim 1, wherein the first concentration wall of each light concentrator is a bowl-shaped curved surface, and diameters of cross-sections of the first concentration wall of each light concentrator decrease axially in a direction from the first chamber to the second chamber of the light concentrator.

3. The LED lampshade as claimed in claim 2, wherein each of the second concentration wall and the third concentration wall of each light concentrator is a lateral surface of a cone, diameters of cross-sections of each of the second concentration wall and the third concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

4. The LED lampshade as claimed in claim 3, wherein the body further has:

a concentrated light area being adjacent to the openings; and

a uniform light area having a plurality of bumps formed on the uniform light area.

5. The LED lampshade as claimed in claim 2, wherein the second concentration wall of each light concentrator is a bowl-shaped curved surface, and diameters of cross-sections of the second concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

6. The LED lampshade as claimed in claim 5, wherein the third concentration wall of each light concentrator is a lateral surface of a cone, and diameters of cross-sections of the third concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

7. The LED lampshade as claimed in claim 6, wherein the body further has:

a concentrated light area being adjacent to the openings; and

a uniform light area having a plurality of bumps formed thereon.

8. The LED lampshade as claimed in claim 2, wherein the third concentration wall of each light concentrator is a bowl-shaped curved surface, and diameters of cross-sections of the third concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

9. The LED lampshade as claimed in claim 8, wherein the second concentration wall of each light concentrator is a lateral surface of a cone, and diameters of cross-sections of the second concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

10. The LED lampshade as claimed in claim 9, wherein the body further has:

a concentrated light area being adjacent to the openings; and

a uniform light area having a plurality of bumps formed thereon.

11. The LED lampshade as claimed in claim 5, wherein the third concentration wall of each light concentrator is a bowl-shaped curved surface, and diameters of cross-sections of the third concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

12. The LED lampshade as claimed in claim 1, wherein the second concentration wall of each light concentrator is a bowl-shaped curved surface, and diameters of cross-sections of the second concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

13. The LED lampshade as claimed in claim 12, wherein each of the first concentration wall and the third concentration wall of each light concentrator is a lateral surface of a cone, and diameters of cross-sections of each of the second concentration wall and the third concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

14. The LED lampshade as claimed in claim 13, wherein the body further has:

a concentrated light area being adjacent to the openings; and

a uniform light area having a plurality of bumps formed thereon.

15. The LED lampshade as claimed in claim 12, wherein the third concentration wall of each light concentrator is a bowl-shaped curved surface, and diameters of cross-sections of the third concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

16. The LED lampshade as claimed in claim 15, wherein the first concentration wall of each light concentrator is a lateral surface of a cone, and diameters of cross-sections of the first concentration wall of each light concentrator decrease axially in a direction from the first chamber to the second chamber of the light concentrator.

17. The LED lampshade as claimed in claim 16, wherein the body further has:

a concentrated light area being adjacent to the openings; and

a uniform light area having a plurality of bumps formed thereon.

18. The LED lampshade as claimed in claim 1, wherein the third concentration wall of each light concentrator is a bowl-shaped curved surface, and diameters of cross-sections of the third concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

19. The LED lampshade as claimed in claim 18, wherein each of the first concentration wall and the second concentration wall of each light concentrator is a lateral surface of a cone, diameters of cross-sections of the first concentration wall of each light concentrator decrease axially in a direction from the first chamber to the second chamber of the light concentrator, and diameters of cross-sections of the second concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.

20. The LED lampshade as claimed in claim 1, wherein each of the first concentration wall, the second concentration wall and the third concentration wall of each light concentrator is a lateral surface of a cone, diameters of cross-sections of the first concentration wall of each light concentrator decrease axially in a direction from the first chamber to the second chamber of the light concentrator, and diameters of cross-sections of each of the second concentration wall and the third concentration wall of each light concentrator increase axially in a direction from the first chamber to the second chamber of the light concentrator.