Light-emitting device

• US 7,331,689 B2
• Filed: 08/28/2006
• Issued: 02/19/2008
• Est. Priority Date: 06/12/2006
• Status: Expired due to Fees

• Current Assignee: Grand-Tek Technology Co., Ltd.
• Original Assignee: Grand-Tek Technology Co., Ltd.
• Inventors: Chen, Hai-Han
• Primary Examiner(s): LEE, Y MY QUACH
• Application Number:
  US11/510,695
• Publication Number:
  US 20070285922A1
• Time in Patent Office: 540 Days
• Field of Search: 362/240, 362/244, 362/246, 362/249, 362/251, 362/294, 362/331, 362/332, 362/333, 362/335, 362/648, 362/800
• US Class Current: 362/240
• CPC Class Codes: F21V 15/015 Devices for covering joints between adjacent lighting devices; End coverings
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 23/023 Power supplies in a casing F21V23/003 takes precedence
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 3/02 characterised by the shape
• 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 light emitting device is disclosed, in which a body is provided with a first joining portion, light-emitting elements located at a side of the body having the first joining portion for emitting light and an optical processing element disposed at a side of the light-emitting elements having a second joining portion corresponding to the first joining portion for processing light emitted from each light-emitting element, such that even light emission is obtained.

Claims

1. A light-emitting device, comprising:

a body including a first joining portion;

a plurality of light-emitting element located at a side of the body having the first joining portion for emitting light; and

an optical processing element disposed at a side of the plurality of light-emitting elements including a second joining portion corresponding to the first joining portion for processing light emitted from each light-emitting element, such that even light emission is obtained;

wherein the body further comprises a base for disposing the light-emitting elements, and the base comprises an adhesive gel for fixing the light-emitting elements on the base, a groove on a face of the base, a circuit board in the groove having a plurality of receiving portions for receiving the light-emitting elements, wires for electrically connecting the circuit board and the light-emitting elements, a resin filled in the receiving portions for covering the light-emitting elements, and power lines electrically connected to the circuit board.

2. The light-emitting device of claim 1, wherein the body is a hollow frame.

3. The light-emitting device of claim 1, wherein the first joining portion is a track.

4. The light-emitting device of claim 1, wherein the body further comprises a third joining portion, the base comprising a fourth joining portion corresponding to the third joining portion.

5. The light-emitting device of claim 1, wherein the base is a metal heat-dissipating base.

6. The light-emitting device of claim 1, wherein the circuit board is a printed circuit board, the wires are gold wires, the resin is an epoxy resin, and the power lines pass through the base.

7. The light-emitting device of claim 1, wherein the light-emitting elements are first connected in parallel then in series for electrical connection.

8. The light-emitting device of claim 1, further comprising at least one voltage regulator electrically connected to at least one of the light-emitting elements.

9. The light-emitting device of claim 8, wherein one of the at least one voltage a regulator is connected to nine light-emitting elements.

10. The light-emitting device of claim 8, wherein the voltage regulator is a Zoner diode.

11. The light-emitting device of claim 1, wherein the optical processing element is a transparent spreading plate.

12. The light-emitting device of claim 1, wherein the second joining portion is one of a protruding rib and a tenon.

13. The light-emitting device of claim 1, wherein the optical processing element comprises a first face and a second face opposite to the first face.

14. The light-emitting device of claim 13, wherein the first face is provided with a first processing portion and the second face is provided with a second processing portion.

15. The light-emitting device of claim 14, wherein the first processing portion is a continuous-arc pattern and the second processing portion is also a continuous-arc pattern, wherein the radius of the arc pattern of the first processing portion is not equal to that of the arc pattern of the second procession portion.

16. The light-emitting device of claim 1, further comprising a fastening element located at one end of the body.

17. The light-emitting device of claim 16, wherein the fastening element is an end cap.

18. The light-emitting device of claim 6, wherein the base further comprises a wave structure on another face of the base.

19. A light-emitting device, comprising:

a body including a first joining portion;

a plurality of light-emitting element located at a side of the body having the first joining portion for emitting light; and

an optical processing disposed at a side of the plurality of light-emitting elements including a second joining portion corresponding to the first joining portion for processing light emitted from each light-emitting element, such that even light emission is obtained;

wherein the body further comprises a base for disposing the light-emitting elements, and the base comprises an adhesive gel for fixing the light-emitting elements on the base, a groove on a face of the base, a wave structure on the other face of the base, a printed circuit board in the groove having a plurality of receiving portions for receiving the light-emitting elements, gold wires for electrically connecting the printed circuit board and the light-emitting elements, an epoxy resin filled in the receiving portions for covering the light-emitting elements, and power lines through the base and electrically connected to the printed circuit board.