CA2500996A1 - Light emitting diode headlamp and headlamp assembly - Google Patents
Light emitting diode headlamp and headlamp assembly Download PDFInfo
- Publication number
- CA2500996A1 CA2500996A1 CA002500996A CA2500996A CA2500996A1 CA 2500996 A1 CA2500996 A1 CA 2500996A1 CA 002500996 A CA002500996 A CA 002500996A CA 2500996 A CA2500996 A CA 2500996A CA 2500996 A1 CA2500996 A1 CA 2500996A1
- Authority
- CA
- Canada
- Prior art keywords
- headlamp
- light transmissive
- headlamp according
- emitting diodes
- transmissive member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims 23
- 230000007246 mechanism Effects 0.000 claims 13
- 230000004907 flux Effects 0.000 claims 8
- 230000009977 dual effect Effects 0.000 claims 4
- 230000008844 regulatory mechanism Effects 0.000 claims 4
- 239000012815 thermoplastic material Substances 0.000 claims 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 2
- 229910052782 aluminium Inorganic materials 0.000 claims 2
- 239000011701 zinc Substances 0.000 claims 2
- 229910052725 zinc Inorganic materials 0.000 claims 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
- F21V29/89—Metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
- F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
- F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/28—Cover glass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
- F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V31/00—Gas-tight or water-tight arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The present invention is a headlamp and headlamp assembly that utilizes light emitting diodes as a light source. The light emitting diode headiamp and headlamp assembly effectively emanates white light and is capable of low beam and high beam functions. The light emitting diode headlamps comprise high-flux light emitting diodes, a reflector subassembly, and a first and second light transmissive member.
Claims (71)
1. A headlamp, comprising:
a housing (6) defining an inner surface and an outer surface;
an outer tight transmissive member (13) adapted to engage with said housing (6), defining a three-dimensional space (7) therebetween;
a plurality of reflector units (11a) positioned within said space (7);
a corresponding plurality of high-flux light emitting diodes (12) arranged at the base of said reflector units (11a) and operatively mounted to a substantially planar support member (9) such that emitted light rays are directed away from said support member (9), wherein said high-flux light emitting diodes (12) produce a minimum flux of 50 lumens and an average flux of approximately 70 lumens;
a plurality of inner light transmissive members (17) adjacent to said outer light transmissive member (13); and an alignment mechanism, wherein said alignment mechanism is comprised of a plurality of annular extensions (20), each of said plurality of annular extensions (20) corresponding to one of said plurality of inner light transmissive members (17) and being integral to an inner face of said outer light transmissive member (13);
a heat dissipating mechanism (14);
wherein said headlamp (4) effectively emanates white light in any given direction.
a housing (6) defining an inner surface and an outer surface;
an outer tight transmissive member (13) adapted to engage with said housing (6), defining a three-dimensional space (7) therebetween;
a plurality of reflector units (11a) positioned within said space (7);
a corresponding plurality of high-flux light emitting diodes (12) arranged at the base of said reflector units (11a) and operatively mounted to a substantially planar support member (9) such that emitted light rays are directed away from said support member (9), wherein said high-flux light emitting diodes (12) produce a minimum flux of 50 lumens and an average flux of approximately 70 lumens;
a plurality of inner light transmissive members (17) adjacent to said outer light transmissive member (13); and an alignment mechanism, wherein said alignment mechanism is comprised of a plurality of annular extensions (20), each of said plurality of annular extensions (20) corresponding to one of said plurality of inner light transmissive members (17) and being integral to an inner face of said outer light transmissive member (13);
a heat dissipating mechanism (14);
wherein said headlamp (4) effectively emanates white light in any given direction.
2. A headlamp according to claim 1 wherein said outer light transmissive member (13) defines a lens cover, with an inner and outer face, for said housing (6).
3. A headlamp according to claim 2 wherein said plurality of reflector units (11a) collimate a first portion of said emitted light rays, forming first incident light rays substantially parallel to a longitudinal axis of said headlamp and directed toward said lens cover.
4. A headlamp according to claim 3 wherein said plurality of inner light transmissive members collimate a second portion of said emitted light rays, forming second incident light rays substantially parallel to said longitudinal axis and directed toward said lens cover.
5. A headlamp according to claim 2 wherein said plurality of light emitting diodes (12) are arranged in a plurality of rows on said support member (9) to form an array of light emitting diodes (12).
6. A headlamp according to claim 5 wherein said plurality of reflector units are operatively arranged in a plurality of rows to form a reflector array that corresponds to said array of light emitting diodes (12).
7. A headlamp according to claim 6 wherein each of said plurality of reflector units (11a) comprises a parabolic reflector with a six (6) millimeter focal length.
8. A headlamp according to claim 6 wherein said plurality of reflector units (11a) form a unitary reflector subassembly (11).
9. A headlamp according to claim 8 wherein said reflector subassembly (11) is constructed of a metalized thermoplastic material.
10. A headlamp according to claim 5 wherein said array of light emitting diodes (12) comprises six light emitting diodes operatively arranged in two rows of three light emitting diodes, and wherein said plurality of reflector units (11a) comprises six reflector units operatively arranged in a reflector array that corresponds to said array of light emitting diodes (12).
11. A headlamp according to claim 10 wherein each of said plurality of reflector units (11a) comprises a parabolic reflector with a six (6) millimeter focal length.
12. A headlamp according to claim 10 wherein said plurality of reflector units (11a) form a unitary reflector subassembly (11).
13. A headlamp according to claim 12 wherein said reflector subassembly (11) is constructed of a metalized thermoplastic material.
14. A headlamp according to claim 5 wherein said array of light emitting diodes (12) comprises fourteen light emitting diodes (12) and wherein said plurality of reflector units (11a) comprises fourteen reflector units operatively arranged in a reflector array that corresponds to said array of light emitting diodes (12).
15. A headlamp according to claim 14 wherein each of said plurality of reflector units (11a) comprises a parabolic reflector with a six (6) millimeter focal length.
16. A headlamp according to claim 14 wherein said plurality of reflector units (11a) form a unitary reflector subassembly (11).
17. A headlamp according to claim 16 wherein said reflector subassembly (11) is constructed of a metalized thermoplastic material.
18. A headlamp according to claim 4 wherein each of said plurality of inner light transmissive members (17) are aligned generally parallel to said outer light transmissive member (13) and in front of one of said plurality of light emitting diodes (12).
19. A headlamp according to claim 18 wherein each of said plurality of inner light transmissive members (17) is an aspheric lens.
20. A headlamp according to claim 4 wherein said at least one alignment mechanism comprises a plurality of annular extensions (20) corresponding to said plurality of inner light transmissive members (17), each of said annular extensions (20) integral to said inner face of said outer light transmissive member (13) and extending laterally therefrom.
21. A headlamp according to claim 20 wherein each of said plurality of inner light transmissive members (17) is an aspheric lens.
22. A headlamp according to claim 4 wherein said outer light transmissive member (13) comprises at least one optical surface (80) formed on said inner face of said outer light transmissive member (13).
23. A headlamp according to claim 22 wherein said at least one optical surface (80) comprises:
a first optical surface for producing a wide light pattern, said first optical surface (80) further comprised of at least one prism optic generally convex toward said plurality of light emitting diodes (12);
a second optical surface for producing a narrow light pattern, said second optical surface further comprised of at least one prism optic generally convex toward said plurality of light emitting diodes (12); and a third optical surface for producing a concentrated point of light, said third optical surface further comprised of at least one prism optic generally concave toward said plurality of light emitting diodes (12).
a first optical surface for producing a wide light pattern, said first optical surface (80) further comprised of at least one prism optic generally convex toward said plurality of light emitting diodes (12);
a second optical surface for producing a narrow light pattern, said second optical surface further comprised of at least one prism optic generally convex toward said plurality of light emitting diodes (12); and a third optical surface for producing a concentrated point of light, said third optical surface further comprised of at least one prism optic generally concave toward said plurality of light emitting diodes (12).
24. A headlamp according to claim 22 wherein said at least one optical surface (12) comprises a rectangular array of prism optics.
25. A headlamp according to claim 22 wherein said at least one optical surface comprises:
a first optical surface for producing a first light pattern;
a second optical surface for producing a second light pattern;
a third optical surface for producing a third light pattern;
and a fourth optical surface for producing a fourth light pattern.
a first optical surface for producing a first light pattern;
a second optical surface for producing a second light pattern;
a third optical surface for producing a third light pattern;
and a fourth optical surface for producing a fourth light pattern.
26. A headlamp according to claim 25 wherein said at least one optical surface comprises a plurality of adjacent, linear prisms formed on said inner face of said outer light transmissive member.
27. A headlamp according to claim 26 wherein each of said linear prisms has a conic cross section and is generally convex toward said plurality of light emitting diodes to function as a convergent optic.
28. A headlamp according to claim 1 further comprising a driver circuit with a current regulation mechanism, said driver circuit operatively arranged to drive said plurality of light emitting diodes.
29. A headlamp according to claim 1 wherein said housing (6) functions as said heat dissipating mechanism.
30. A headlamp according to claim 29 wherein said housing (6) is constructed of aluminum.
31. A headlamp according to claim 29 wherein said housing (6) is constructed of zinc.
32. A headlamp according to claim 1 wherein said support member (9) is generally planar.
33. A headlamp according to claim 32 wherein said support member (9) is an aluminum core circuit board operatively mounted on said housing (6).
34. A headlamp according to claim 1 wherein said outer light transmissive member (11) is hermetically sealed to said housing (6).
35. A headlamp according to claim 1 wherein said outer light transmissive member (13) and said housing (6) are generally rectangular.
36. A headlamp according to claim 35 wherein said headlamp is a four (4) inch by six (6) inch sealed-beam headlamp for a quad headlamp assembly.
37. A headlamp according to claim 1 wherein said outer light transmissive member (13) and said housing (6) are generally circular.
38. A headlamp according to claim 37 wherein said headlamp is a seven (7) inch round combined low beam/high beam, sealed-beam headlamp for a dual headlamp assembly.
39. A headlamp according to claim 1 wherein said headlamp functions as one of two low beam headlamps in a quad headlamp assembly that satisfies the minimum and maximum photometric requirements of the Society of Automotive Engineers Standards J1383 (December 1996) for low beam headlamps.
40. A headlamp according to claim 1 wherein said headlamp functions as one of two high beam headlamps in a quad headlamp assembly that satisfies the minimum and maximum photometric requirements of the Society of Automotive Engineers Standards J1383 (December 1996) for high beam headlamps.
41. A headlamp according to claim 1 wherein said headlamp functions as one of two combined low beam/high beam headlamps in a dual headlamp assembly that satisfies the minimum and maximum photometric requirements of the Society of Automotive Engineers Standards J1383 (December 1996) for low beam and high beam headlamps.
42. A headlamp, comprising:
a substantially planar support member (9);
a plurality of high-flux light emitting diodes (12) mounted on said support member, wherein each of said plurality of high-flux light emitting diodes (12) is capable of producing a minimum flux of 50 lumens and an average flux of 70 lumens and are mounted on a housing (6) formed of a material for transferring heat away from said plurality of high-flux light emitting diodes (12);
an outer light transmissive member (13) with an inner and outer face, said outer light transmissive member (13) adapted to engage with said housing (6) to define a three-dimensional space (7) therebetween;
a unitary reflector subassembly (11) positioned within said space (7), wherein said reflector subassembly (11) comprises an array of parabolic reflector units (11a);
at least one inner light transmissive member (17) adjacent to said outer light transmissive member (13);
at least one alignment mechanism, wherein said at least one alignment mechanism comprises a plurality of annular extensions (20), each corresponding to one of said at least one inner light transmissive member (17), each of said annular extensions (20) integral to an inner face of said outer light transmissive member (13) and extending laterally therefrom, and wherein said at least one inner light transmissive member (17) is fixedly secured to said at least one alignment mechanism such that said at least one inner light transmissive member (17) is aligned generally parallel to said outer light transmissive member (13) and in front of said plurality of high-flux light emitting diodes (12);
and a driver circuit with a current regulation mechanism.
a substantially planar support member (9);
a plurality of high-flux light emitting diodes (12) mounted on said support member, wherein each of said plurality of high-flux light emitting diodes (12) is capable of producing a minimum flux of 50 lumens and an average flux of 70 lumens and are mounted on a housing (6) formed of a material for transferring heat away from said plurality of high-flux light emitting diodes (12);
an outer light transmissive member (13) with an inner and outer face, said outer light transmissive member (13) adapted to engage with said housing (6) to define a three-dimensional space (7) therebetween;
a unitary reflector subassembly (11) positioned within said space (7), wherein said reflector subassembly (11) comprises an array of parabolic reflector units (11a);
at least one inner light transmissive member (17) adjacent to said outer light transmissive member (13);
at least one alignment mechanism, wherein said at least one alignment mechanism comprises a plurality of annular extensions (20), each corresponding to one of said at least one inner light transmissive member (17), each of said annular extensions (20) integral to an inner face of said outer light transmissive member (13) and extending laterally therefrom, and wherein said at least one inner light transmissive member (17) is fixedly secured to said at least one alignment mechanism such that said at least one inner light transmissive member (17) is aligned generally parallel to said outer light transmissive member (13) and in front of said plurality of high-flux light emitting diodes (12);
and a driver circuit with a current regulation mechanism.
43. A headlamp according to claim 42 wherein said outer light transmissive member (13) defines a lens cover for said housing.
44. A headlamp according to claim 42 wherein said housing (6) is constructed of aluminum.
45. A headlamp according to claim 42 wherein said housing (6) is constructed of zinc.
46. A headlamp according to claim 42 wherein said at least one inner light transmissive member (17) is an aspheric lens.
47. A headlamp according to claim 42 wherein said array of light emitting diodes (12) comprises six light emitting diodes operatively arranged in two rows of three light emitting diodes, and wherein said reflector subassembly (11) comprises six parabolic reflector units operatively arranged to correspond to said array of light emitting diodes (12).
48. A headlamp according to claim 42 wherein said reflector subassembly (11) is constructed of a metalized thermoplastic material.
49. A headlamp according to claim 42 wherein said outer light transmissive member (13) comprises at least one optical surface to produce a wide light pattern extending approximately thirty (30) degrees left to approximately thirty (30) right of a vertical axis of said headlamp; a narrow light pattern extending approximately eight (8) degrees left to approximately eight (8) degrees right of said vertical axis and approximately zero (0) degrees to approximately four (4) degrees up from a longitudinal axis of said headlamp; and a concentrated point of light located approximately two (2) degrees down from said longitudinal axis and approximately two (2) degrees right of said vertical axis.
50. A headlamp according to claim 49 wherein said at least one optical surface comprises a rectangular array of prism optics formed on said inner face of said outer light transmissive member (13).
51. A headlamp according to claim 42 wherein said outer light transmissive member (13) comprises at least one optical surface to produce a first light pattern extending approximately six (6) degrees left and right of a longitudinal axis of said headlamp; a second light pattern extending approximately three (3) degrees left to approximately three (3) right of a vertical axis of said headlamp;
a third light pattern extending approximately nine (9) degrees left to approximately nine (9) right of said vertical axis; and a fourth light pattern extending approximately fifteen (15) degrees left to approximately fifteen (1) degrees right of said vertical axis of said headlamp and approximately one (1) degree downward from said longitudinal axis.
a third light pattern extending approximately nine (9) degrees left to approximately nine (9) right of said vertical axis; and a fourth light pattern extending approximately fifteen (15) degrees left to approximately fifteen (1) degrees right of said vertical axis of said headlamp and approximately one (1) degree downward from said longitudinal axis.
52. A headlamp according to claim 51 wherein said at least one optical surface comprises a plurality of adjacent linear prisms formed on said inner face of said outer light transmissive member (13).
53. A headlamp according to claim 52 wherein each of said plurality of linear prisms has a conic cross section and is generally convex toward said plurality of light emitting diodes (12) to function as a convergent optic.
54. A headlamp according to claim 52 wherein said outer light transmissive member (13) is hermetically sealed to said housing (6).
55. A headlamp according to claim 42 wherein said outer light transmissive member (13) and said housing (6) are generally rectangular.
56. A headlamp according to claim 55 wherein said headlamp is a four (4) inch by six (6) inch sealed-beam headlamp for a quad headlamp system.
57. A headlamp according to claim 42 wherein said outer light transmissive member (13) and said housing (6) are generally circular.
58. A headlamp according to claim 57 wherein said headlamp is a seven (7) inch round combined low beam/high beam, seated-beam headlamp for a dual headlamp assembly.
59. A headlamp according to claim 42 wherein said headlamp functions as one of two low beam headlamps in a quad headlamp assembly that satisfies the minimum and maximum photometric requirements of the Society of Automotive Engineers Standards J1383 (December 1996) for low beam headlamps.
60. A headlamp according to claim 42 wherein said headlamp functions as one of two high beam headlamps in a quad headlamp assembly that satisfies the minimum and maximum photometric requirements of the Society of Automotive Engineers Standards J1383 (December 1996) for high beam headlamps.
61. A headlamp according to claim 42 wherein said headlamp functions as one of two combined low beam/high beam headlamps in a dual headlamp assembly that satisfies the minimum and maximum photometric requirements of the Society of Automotive Engineers Standards J1383 (December 1996) for low beam and high beam headlamps.
62. A headlamp, comprising:
a housing (6) defining an inner surface and an outer surface;
an outer light transmissive member (13) adapted to engage with said housing (6), defining a three-dimensional space (7) therebetween;
a plurality of reflector units (11a) positioned within said space (7);
a corresponding plurality of high-flux light emitting diodes (12) arranged at the base of said plurality of reflector units (11a) and operatively mounted to a substantially planar support member (9), said high-flux light emitting diodes (12) capable of producing a minimum flux of 50 lumens and an average flux of 70 lumens;
a plurality of inner light transmissive members (17) adjacent to said outer light transmissive member (13);
a plurality of annular extensions (20) integral to said outer light transmissive member (13), wherein said plurality of inner light transmissive members (17) are fixedly secured to said plurality of annular extensions (20) and function as an alignment mechanism;
a heat dissipating mechanism for transferring heat away from said plurality of light emitting diodes (12);
and a driver circuit with a current regulation mechanism;
wherein said headlamp effectively emanates white light in any given direction.
a housing (6) defining an inner surface and an outer surface;
an outer light transmissive member (13) adapted to engage with said housing (6), defining a three-dimensional space (7) therebetween;
a plurality of reflector units (11a) positioned within said space (7);
a corresponding plurality of high-flux light emitting diodes (12) arranged at the base of said plurality of reflector units (11a) and operatively mounted to a substantially planar support member (9), said high-flux light emitting diodes (12) capable of producing a minimum flux of 50 lumens and an average flux of 70 lumens;
a plurality of inner light transmissive members (17) adjacent to said outer light transmissive member (13);
a plurality of annular extensions (20) integral to said outer light transmissive member (13), wherein said plurality of inner light transmissive members (17) are fixedly secured to said plurality of annular extensions (20) and function as an alignment mechanism;
a heat dissipating mechanism for transferring heat away from said plurality of light emitting diodes (12);
and a driver circuit with a current regulation mechanism;
wherein said headlamp effectively emanates white light in any given direction.
63. A headlamp assembly comprising:
at least two headlamps comprising a plurality of high-flux light emitting diodes as a light source, each of said plurality of high-flux light emitting diodes capable of producing a minimum flux of 50 lumens and an average flux of 70 lumens;
each of said at least two headlamps comprising:
a housing;
a substantially planar support member (9) on which said plurality of high-flux light emitting diodes are mounted;
an outer light transmissive member hermetically sealed with said housing, thereby defining a three-dimensional space;
a plurality of reflector units positioned within said space and operatively arranged to correspond to said plurality of light emitting diodes;
at least one inner light transmissive member adjacent to said outer light transmissive member;
an alignment mechanism, wherein said alignment mechanism comprises at least one annular extension (20), each of said at least one of annular extension (20) corresponding to one of said at least one inner light transmissive member (17) and being integral to an inner face of said outer light transmissive member (13) and extending laterally therefrom;
a heat dissipating mechanism;
and a driver circuit with a current regulation mechanism, said driver circuit operatively arranged to drive said plurality of light emitting diodes.
at least two headlamps comprising a plurality of high-flux light emitting diodes as a light source, each of said plurality of high-flux light emitting diodes capable of producing a minimum flux of 50 lumens and an average flux of 70 lumens;
each of said at least two headlamps comprising:
a housing;
a substantially planar support member (9) on which said plurality of high-flux light emitting diodes are mounted;
an outer light transmissive member hermetically sealed with said housing, thereby defining a three-dimensional space;
a plurality of reflector units positioned within said space and operatively arranged to correspond to said plurality of light emitting diodes;
at least one inner light transmissive member adjacent to said outer light transmissive member;
an alignment mechanism, wherein said alignment mechanism comprises at least one annular extension (20), each of said at least one of annular extension (20) corresponding to one of said at least one inner light transmissive member (17) and being integral to an inner face of said outer light transmissive member (13) and extending laterally therefrom;
a heat dissipating mechanism;
and a driver circuit with a current regulation mechanism, said driver circuit operatively arranged to drive said plurality of light emitting diodes.
64. A headlamp assembly according to claim 63 comprising two (2) low beam headlamps and two (2) high beam headlamps.
65. A headlamp assembly according to claim 64 wherein each of said low beam headlamps comprises at least one optical surface formed on said outer light transmissive member (13) to produce white light in a distribution pattern comprising:
a wide light pattern extending approximately thirty (30) degrees left to approximately thirty (30) right of a vertical axis of said headlamp, a narrow light pattern extending approximately eight (8) degrees left to approximately eight (8) degrees right of said vertical axis and approximately zero (0) degrees to approximately four (4) degrees up from said longitudinal axis;
and a concentrated point of light located approximately two (2) degrees down from said longitudinal axis and approximately two (2) degrees right of said vertical axis.
a wide light pattern extending approximately thirty (30) degrees left to approximately thirty (30) right of a vertical axis of said headlamp, a narrow light pattern extending approximately eight (8) degrees left to approximately eight (8) degrees right of said vertical axis and approximately zero (0) degrees to approximately four (4) degrees up from said longitudinal axis;
and a concentrated point of light located approximately two (2) degrees down from said longitudinal axis and approximately two (2) degrees right of said vertical axis.
66. A headlamp assembly according to claim 65 wherein said at least one optical surface comprises a rectangular array of prism optics formed on said inner face of said outer light transmissive member (13).
67. A headlamp assembly according to claim 64 wherein each of said high beam headlamps comprises at least one optical surface formed on said outer light transmissive member (13) to produce white light in a distribution pattern comprising:
a first light pattern extending approximately six (6) degrees left and right of the longitudinal axis;
a second light pattern extending approximately three (3) degrees left to approximately three (3) right of said vertical axis;
a third light pattern extending approximately nine (9) degrees left to approximately nine (9) right of said vertical axis,;
and a fourth light pattern extending approximately fifteen (15) degrees left to approximately fifteen (1) degrees right of said vertical axis of said headlamp and approximately one (1) degree downward from said longitudinal axis.
a first light pattern extending approximately six (6) degrees left and right of the longitudinal axis;
a second light pattern extending approximately three (3) degrees left to approximately three (3) right of said vertical axis;
a third light pattern extending approximately nine (9) degrees left to approximately nine (9) right of said vertical axis,;
and a fourth light pattern extending approximately fifteen (15) degrees left to approximately fifteen (1) degrees right of said vertical axis of said headlamp and approximately one (1) degree downward from said longitudinal axis.
68. A headlamp assembly according to claim 67 wherein said at least one optical surface comprises a plurality of adjacent linear prisms formed on said inner face of said outer light transmissive member (13).
69. A headlamp assembly according to claim 68 wherein each of said linear prisms has a conic cross section and is generally convex toward said plurality of light emitting diodes (12) to function as a convergent optic.
70. A headlamp assembly according to claim 63 comprising two (2) combined low beam/high beam headlamps.
71. A headlamp assembly according to claim 63 that satisfies the minimum and maximum photometric requirements of the Society of Automotive Engineers Standards J1383 (December 1996) for headlamps.
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US60/507,621 | 2003-09-30 | ||
PCT/US2003/031117 WO2004031649A1 (en) | 2002-10-01 | 2003-10-01 | Light emitting diode headlamp and headlamp assembly |
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CA2500996A1 true CA2500996A1 (en) | 2004-04-15 |
CA2500996C CA2500996C (en) | 2010-11-09 |
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US (2) | US7070310B2 (en) |
EP (1) | EP1556648A1 (en) |
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-
2003
- 2003-10-01 CA CA2500996A patent/CA2500996C/en not_active Expired - Lifetime
- 2003-10-01 EP EP03799384A patent/EP1556648A1/en not_active Withdrawn
- 2003-10-01 US US10/677,923 patent/US7070310B2/en not_active Expired - Fee Related
- 2003-10-01 MX MXPA05003469A patent/MXPA05003469A/en active IP Right Grant
- 2003-10-01 AU AU2003277206A patent/AU2003277206A1/en not_active Abandoned
- 2003-10-01 BR BRPI0315005A patent/BR0315005B1/en not_active IP Right Cessation
- 2003-10-01 WO PCT/US2003/031117 patent/WO2004031649A1/en not_active Application Discontinuation
-
2006
- 2006-02-21 US US11/359,550 patent/US7401960B2/en active Active
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MXPA05003469A (en) | 2005-06-03 |
BR0315005A (en) | 2005-08-09 |
AU2003277206A1 (en) | 2004-04-23 |
CA2500996C (en) | 2010-11-09 |
US20040085779A1 (en) | 2004-05-06 |
US7070310B2 (en) | 2006-07-04 |
WO2004031649A1 (en) | 2004-04-15 |
US20060139942A1 (en) | 2006-06-29 |
EP1556648A1 (en) | 2005-07-27 |
BR0315005B1 (en) | 2017-11-14 |
US7401960B2 (en) | 2008-07-22 |
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