Light source arrangement

• US 6,578,998 B2
• Filed: 03/21/2001
• Issued: 06/17/2003
• Est. Priority Date: 03/21/2001
• Status: Expired due to Term

• Current Assignee: Amy Yun Chen
• Original Assignee: A L Lightech Incorporated
• Inventors: Zhang, Long Bao
• Primary Examiner(s): O'Shea, Sandra
• Assistant Examiner(s): ZEADE, BERTRAND
• Application Number:
  US09/814,587
• Publication Number:
  US 20020136025A1
• Time in Patent Office: 818 Days
• Field of Search: 562/555, 562/800, 562/545, 562/350, 562/296, 562/345, 562/294, 257/720, 257/98, 257/99
• US Class Current: 362/555
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 45/47 Passive cooling, e.g. using fins, thermal conductive elements or openings
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21W 2111/00 Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: F21W 2111/02 for roads, paths or the like
• CPC Class Codes: F21W 2111/04 for waterways
• CPC Class Codes: F21Y 2113/17 forming a single encapsulated light source
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G09F 13/04 Signs, boards or panels, illuminated from behind the insignia
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01L 33/60 Reflective elements
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
• CPC Class Codes: H01L 33/642 characterized by the shape
• CPC Class Codes: H01L 33/647 the elements conducting electric current to or from the semiconductor body
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A light source arrangement includes a cell body having a concave light projecting surface and a semi-spherical reflective cavity surrounded by the light projecting surface, a light source unit including at least two terminal electrodes extended therefrom and at least a luminary element for emitting light when the terminal electrodes are electrified, and a supporting frame having a predetermined width mounted on the cell body to support the light source unit at a focus point of the reflective cavity in such a manner lights emitted from the light source unit are accumulatively collected and reflected by the reflective cavity to outside. Heat is efficiently dissipated by the supporting frame when a larger current is applied to the light source arrangement. Therefore, up to five luminary elements are adapted to be supported in the light source unit for increasing the light intensity of the light source arrangement.

Claims

1. A light source arrangement, comprising:

a cell body having a reflective cavity defined and surrounded by a concave light projecting surface;

a light source unit comprising a first and a second terminal electrode and a first luminary element for emitting light when said terminal electrodes are electrified; and

a supporting frame comprising a heat dissipating and supporting bridge riding across an opening of said reflective cavity of said cell body to support said light source unit at a focus point of said reflective cavity with respect to said concave light projecting surface for emitting light towards said concave light projecting surface upon energized, wherein all emitting light from said light source unit are accumulatively collected and reflected by said concave light projecting surface to outside, wherein said heat dissipating and supporting bridge has a thin thickness and a predetermined width wider than said thin thickness that substantially enlarges a surface area thereof and dissipates heat generated from said light source unit.

2. A light source arrangement, as recited in claim 1, wherein said first luminary element of said light source unit is electrically connected with one of said first and second terminal electrodes which are positioned parallelly and close to each other in such a manner that light is emitted by said first luminary element when said first and second terminal electrodes are electrified.

3. A light source arrangement, as recited in claim 1, wherein said heat dissipating and supporting bridge of said supporting frame comprises two horizontal supporting arms, each having said predetermined width, transversely mounted on said cell body respectively, and said supporting frame further comprises two vertical supporting legs integrally and respectively extended from two outer ends of said two supporting arms, wherein said two terminal electrodes are integrally extended from two inner ends of said two supporting arms respectively into said reflective cavity.

4. A light source arrangement, as recited in claim 2, wherein said heat dissipating and supporting bridge of said supporting frame comprises two horizontal supporting arms, each having said predetermined width, transversely mounted on said cell body respectively, and said supporting frame further comprises two vertical supporting legs integrally and respectively extended electrodes from two outer ends of said two supporting arms, wherein said two terminal electrodes are integrally extended from two inner ends of said two supporting arms respectively into said reflective cavity.

5. A light source arrangement, as recited in claim 1, wherein said light source unit further comprises at least another two terminal electrodes and at least another two luminary elements, wherein said light source unit further comprises an electrified base on which said three luminary elements are disposed thereon, wherein said electrified base is electrically connected to one of said terminal electrodes and said other terminal electrodes are extended to adjacent with electrified base and aligned with said three luminary elements respectively, wherein said three luminary elements provided on said electrified base are arranged to electrify with said other three terminal electrodes respectively so as to produce lights from said three luminary elements respectively.

6. A light source arrangement, as recited in claim 5, wherein said heat dissipating and supporting bridge of said supporting frame comprises four supporting arms each of which has said predetermined width and is transversely mounted on said cell body, wherein said first, second, third and fourth terminal electrodes are perpendicularly extended from four inner ends of said four supporting arms of said supporting frame, wherein said supporting frame further comprises four vertical supporting legs integrally extended from said outer ends of said four supporting arms and electrically connected to said circuit board respectively.

7. A light source arrangement, as recited in claim 2, wherein said light source unit further comprises a shell for protecting said luminary element therein, wherein said luminary element is positioned at a center of a semi-spherical shaped head portion of said shell so as to ensure said light emitted from said luminary element to said light projecting surface through said shell.

8. A light source arrangement, as recited in claim 4, wherein said light source unit further comprises a shell for protecting said luminary element therein, wherein said luminary element is positioned at a center of a semi-spherical shaped head portion of said shell so as to ensure said light emitted from said luminary element to said light projecting surface through said shell.

9. A light source arrangement, as recited in claim 5, wherein said light source unit further comprises a shell for protecting said luminary elements therein, wherein said luminary elements are positioned at a center of a semi-spherical shaped head portion of said shell so as to ensure said light emitted from said luminary elements to said light projecting surface through said shell.

10. A light source arrangement, as recited in claim 6, wherein said light source unit further comprises a shell for protecting said luminary elements therein, wherein said luminary elements are positioned at a center of a semi-spherical shaped head portion of said shell so as to ensure said light emitted from said luminary elements to said light projecting surface through said shell.

11. A light source arrangement, as recited in claim 1, further comprising a circuit board attached to a bottom of said cell body for electrically controlling said light source unit.

12. A light source arrangement, as recited in claim 2, further comprising a circuit board attached to a bottom of said cell body for electrically controlling said light source unit wherein said two supporting legs are electrically connected to said circuit board respectively.

13. A light source arrangement, as recited in claim 4, further comprising a circuit board attached to a bottom of said cell body for electrically controlling said light source unit wherein said two supporting legs are electrically connected to said circuit board respectively.

14. A light source arrangement, as recited in claim 5, further comprising a circuit board attached to a bottom of said cell body for electrically controlling said light source unit wherein said four supporting legs are electrically connected to said circuit board respectively.

15. A light source arrangement, as recited in claim 6, further comprising a circuit board attached to a bottom of said cell body for electrically controlling said light source unit wherein said four supporting legs are electrically connected to said circuit board respectively.

16. A light source arrangement, as recited in claim 8, further comprising a circuit board attached to a bottom of said cell body for electrically controlling said light source unit wherein said two supporting legs are electrically connected to said circuit board respectively.

17. A light source arrangement, as recited in claim 10, further comprising a circuit board attached to a bottom of said cell body for electrically controlling said light source unit wherein said four supporting legs are electrically connected to said circuit board respectively.

18. A light source arrangement, as recited in claim 2, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material.

19. A light source arrangement, as recited in claim 4, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

20. A light source arrangement, as recited in claim 6, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

21. A light source arrangement, as recited in claim 7, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

22. A light source arrangement, as recited in claim 8, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

23. A light source arrangement, as recited in claim 9, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

24. A light source arrangement, as recited in claim 10, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

25. A light source arrangement, as recited in claim 13, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

26. A light source arrangement, as recited in claim 14, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

27. A light source arrangement, as recited in claim 15, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

28. A light source arrangement, as recited in claim 16, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

29. A light source arrangement, as recited in claim 17, wherein said cell body comprises a bowl shaped reflecting member and four supporting walls integrally and perpendicularly connected together to form a box shape structure, wherein an inner semi-spherical surface of said bowl shaped reflecting member and four upper inner surfaces of said four supporting walls are made of light reflecting material, wherein said bowl shaped reflecting member is integrally connected within said supporting walls in such a manner that said bowl shaped reflecting member is inwardly and downwardly extended from said four supporting walls to form said reflective cavity above said bowl shaped reflecting member and within said four supporting walls.

30. A light source arrangement, as recited in claim 18, wherein said cell body further has two top slots formed at two opposing corners of said cell body respectively and two longitudinal edge slots which are formed on two opposing corner edges of said cell body and integrally extended from said top slots respectively, wherein said two supporting arms are fittedly mounted on said two opposing top slots while said supporting legs are extended along said edge slots respectively.

31. A light source arrangement, as recited in claim 19, wherein said cell body further has two top slots formed at two opposing corners of said cell body respectively and two longitudinal edge slots which are formed on two opposing corner edges of said cell body and integrally extended from said top slots respectively, wherein said two supporting arms are fittedly mounted on said two opposing top slots while said supporting legs are extended along said edge slots respectively.

32. A light source arrangement, as recited in claim 20, wherein said cell body further has four top slots formed at four corners of said cell body respectively and four longitudinal edge slots which are formed on four corner edges of said cell body and integrally extended from said top slots respectively, wherein said supporting arms are fittedly mounted on said top slots while said supporting legs are extended along said edge slots respectively.

33. A light source arrangement, as recited in claim 22, wherein said cell body further has two top slots formed at two opposing corners of said cell body respectively and two longitudinal edge slots which are formed on two opposing corner edges of said cell body and integrally extended from said top slots respectively, wherein said two supporting arms are fittedly mounted on said two opposing top slots while said supporting legs are extended along said edge slots respectively.

34. A light source arrangement, as recited in claim 24, wherein said cell body further has four top slots formed at four corners of said cell body respectively and four longitudinal edge slots which are formed on four corner edges of said cell body and integrally extended from said top slots respectively, wherein said supporting arms are fittedly mounted on said top slots while said supporting legs are extended along said edge slots respectively.

35. A light source arrangement, as recited in claim 25, wherein said cell body further has two top slots formed at two opposing corners of said cell body respectively and two longitudinal edge slots which are formed on two opposing corner edges of said cell body and integrally extended from said top slots respectively, wherein said two supporting arms are fittedly mounted on said two opposing top slots while said supporting legs are extended along said edge slots respectively to electrically connect to said circuit board respectively.

36. A light source arrangement, as recited in claim 27, wherein said cell body further has four top slots formed at four corners of said cell body respectively and four longitudinal edge slots which are formed on four corner edges of said cell body and integrally extended from said top slots respectively, wherein said supporting arms are fittedly mounted on said top slots while said supporting legs are extended along said edge slots respectively to electrically connect to said circuit board respectively.

37. A light source arrangement, as recited in claim 28, wherein said cell body further has four top slots formed at four corners of said cell body respectively and four longitudinal edge slots which are formed on four corner edges of said cell body and integrally extended from said top slots respectively, wherein said supporting arms are fittedly mounted on said top slots while said supporting legs are extended along said edge slots respectively to electrically connect to said circuit board respectively.

38. A light source arrangement, as recited in claim 29, wherein said cell body further has four top slots formed at four corners of said cell body respectively and four longitudinal edge slots which are formed on four corner edges of said cell body and integrally extended from said top slots respectively, wherein said supporting arms are fittedly mounted on said top slots while said supporting legs are extended along said edge slots respectively to electrically connect to said circuit board respectively.