HIGHLY-EFFICIENT AND HIGH-POWER LED LIGHT SOURCE, AN LED LAMP WHICH USES THE LIGHT SOURCE AND THE APPLICATION OF THE LAMP

• US 20110228534A1
• Filed: 12/21/2009
• Published: 09/22/2011
• Est. Priority Date: 01/22/2009
• Status: Abandoned Application

• Current Assignee: Shanghai CATA Signal Company Limited
• Original Assignee: Shanghai CATA Signal Company Limited
• Inventors: Zhang, Wenhu, Zheng, Qiuhua
• Application Number:
  US13/129,877
• Publication Number:
  US 20110228534A1
• Time in Patent Office: Days
• US Class Current: 362/240
• CPC Class Codes: F21S 6/00 Lighting devices intended to be free-standing F21S9/00, F21S10/00, F21S13/12 take precedence lighting devices specially adapted to be transported from place to place, e.g. lighting devices carried on wheeled supports F21L; details of supports for lighting devices F21V21/00
• CPC Class Codes: F21S 6/002 Table lamps, e.g. for ambient lighting
• CPC Class Codes: F21S 6/003 for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• 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 7/0083 Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane combination of two or more reflectors F21V7/0025
• 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

The present invention relates to a highly-efficient and high-power LED light source and LED lamp which uses the light source and the application of the lamp, particularly relates to a high-power LED light source and to a high-power LED lamp which uses such light source, and also to the application of such lamp. A highly-efficient and high-power LED light source comprising an LED, a condenser which condenses the light of the LED, wherein the said condenser is a concave mirror, and wherein the emitting part of the said LED is located at the focus of the concave mirror; and a converging lens which is located in front of the said LED, wherein the focus of the said converging lens is located at the emitting part of the said LED. The present invention solved the problem of low luminous efficiency of existing high-power LED light sources, and the problem of inadequate fullness and softness of the light emitted by existing high-power LED light sources.

Claims

1. A high-power LED light source comprising:

an LED, a condenser to concentrate the light emitted by the LED, wherein the said condenser is a concave mirror, and the emitting part of the said LED is located at the focus of the said concave mirror; and

a converging lens located in front of the said LED, wherein the focus of the said converging lens is at the emitting part of the said LED.

2. The high-power LED light source as claimed in claim 1, wherein either the focus of the said concave mirror or the focus of the said converging lens can be located in the vicinity of the emitting part of the LED if needed.

3. The high-power LED light source as claimed in claim 1, wherein the said converging lens is a Fresnel lens or other convex lens that has a light condensing function.

4. A lamp comprising:

a casing, a plurality of closely spaced high-power LED light sources in the casing, and wherein each high-power LED light source comprises an LED and a condenser which concentrates the light emitted by the LED, wherein the said condenser is a concave mirror, and wherein the emitting part of the said LED is located at the focus of the said concave mirror; and

also comprising a converging lens located in front of the said LED, wherein the focus of the said converging lens is located at or proximate to the emitting part of the said LED.

5. The lamp as claimed in claim 4, wherein the said converging lens is a Fresnel lens or other convex lens which has a condensing function.

6. The lamp as claimed in claim 4, wherein the said concave minor and the said converging lens of each high-power LED light source concentrate the light in the same direction, i.e. the emitted light beams have the same emitting direction.

7. The lamp as claimed in claim 4, wherein the concave mirrors of each high-power LED light source are placed closely on the same plane.

8. The lamp as claimed in claim 4, wherein the said high-power LED light sources are arranged in a honeycombed shape.

9. The lamp as claimed in claim 4, wherein the said high-power LED light sources are arranged in a rectangular array.

10. The lamp as claimed in claim 4, wherein the converging lens of each high-power LED light source can be set in a proper position in relation to the LED light source either separately or as one integrated piece.

11. The lamp as claimed in claim 7, wherein the concave mirrors of each high-power LED light source are interconnected.

12. The lamp as claimed in claim 4, wherein the lamp also comprises a printed wiring board, wherein the LEDs of each high-power LED light source are set on the said printed wiring board.

13. The lamp as claimed in claim 12, wherein a metal-based heat sink is set on the said printed wiring board.

14. The lamp as claimed in claim 13, wherein, a heat cooling rear cover is set behind the said casing for cooling the said LED, and the said metal-based heat sink is compressed tightly to the said heat cooling rear cover.

15. The lamp as claimed in claim 4, wherein the LED of the said high-power LED light source is a monochromatic single-chip high-power LED.

16. The lamp as claimed in claim 4, wherein the LED of the said high-power LED light source is a monochromatic multi-chip high-power LED.

17. The lamp as claimed in claim 4, wherein the LED of the said high-power LED light source is a multichip color-changeable high-power LED.

18. The lamp as claimed in claim 4, wherein a transparent cover is set in front of the converging lenses of the high-power LED light sources.

19. The lamp as claimed in claim 4, wherein a diffusing lens which diffuses the light is set in front of the converging lens of the high-power LED light sources.

20. The lamp as claimed in claim 19, wherein the surface of the said diffusing lens is densely covered with diffusing grains or pits.

21. The lamp as claimed in claim 20, wherein the said diffusing grains are convex lenses with a light-diffusing effect.

22. The lamp as claimed in claim 20, wherein the said diffusing pits are concave lenses with a light-diffusing effect.

23. The lamp as claimed in claim 19, wherein the said diffusing lens includes an atomized soft-light lens or a soft-light lens added with light diffusing agent.

24. A lamp as claimed in claim 4, wherein the lamp is used in a work light.

25. A lamp as claimed in claim 4, wherein the lamp is used in an indoor light.

26. A lamp as claimed in claim 4, wherein the lamp is used in a car light.

27. A lamp as claimed in claim 4, wherein the lamp is used in a road light.

28. A lamp as claimed in claim 4, wherein the lamp is used in an advertising light.

29. A lamp as claimed in claim 4, wherein the lamp is used in an engineering light.

30. A lamp as claimed in claim 4, wherein the lamp is used in the fabrication of a flashlight.

31. A lamp comprising:

a casing;

a high-power LED light source disposed in the casing;

wherein the high-power LED light source includes an LED and a condenser, which condenser includes a concave mirror such that a light emitting part of said LED coincides with the focus of said concave mirror;

a converging lens located in front of said LED and said casing, wherein the focus of said converging lens coincides with said light emitting part of the said LED;

a metal-based heat sink disposed behind said high-power LED light source; and

a heat dissipating rear cover to said casing, wherein said rear cover engages said heat sink.