Lighting device for motor vehicles

• US 6,616,313 B2
• Filed: 12/06/2001
• Issued: 09/09/2003
• Est. Priority Date: 02/13/1998
• Status: Expired due to Term

• Current Assignee: Magna Mirrors of America Incorporated (Magna International Incorporated)
• Original Assignee: Donnelly Hohe GmbH & Co. KG
• Inventors: Fürst, Peter, Buchalla, Harald
• Primary Examiner(s): O'Shea, Sandra
• Assistant Examiner(s): Zeade, Bertrand
• Application Number:
  US10/013,194
• Publication Number:
  US 20020041498A1
• Time in Patent Office: 642 Days
• Field of Search: 362/545, 362/494, 362/249, 362/540, 362/544, 362/546
• US Class Current: 362/494
• CPC Class Codes: B60Q 1/247 for illuminating the close surroundings of the vehicle, e.g. to facilitate entry or exit for reverse drive B60Q1/22; by opening a side door B60Q1/323
• CPC Class Codes: B60Q 1/2665 on rear-view mirrors lighting devices for vehicle interior on or for rear-view mirrors B60Q3/258
• CPC Class Codes: B60Q 1/2696 Mounting of devices using LEDs
• CPC Class Codes: B60Q 1/32 for indicating vehicle sides , e.g. clearance lights
• CPC Class Codes: B60Q 1/323 on or for doors illuminated exterior door handles B60Q1/2669; illuminated door locks E05B17/10
• CPC Class Codes: B60Q 2400/40 Welcome lights, i.e. specific or existing exterior lamps to assist leaving or approaching the vehicle
• CPC Class Codes: B60Q 3/217 Doors, e.g. door sills; Steps
• CPC Class Codes: B60Q 3/267 Door handles; Hand grips
• CPC Class Codes: B60Q 3/51 for mounting lighting devices onto vehicle interior, e.g. onto ceiling or floor
• CPC Class Codes: B60Q 3/64 for a single lighting device
• CPC Class Codes: B60Q 3/76 for spotlighting, e.g. reading lamps spotlighting on or for specific fittings B60Q3/20; spotlighting in mass transit vehicles B60Q3/44
• CPC Class Codes: B60Q 3/80 Circuits; Control arrangements for dashboards B60Q3/16; for mass transit vehicles B60Q3/47
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/26 Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting device for attachment to a motor vehicle inside a housing 4. One or more light emitting diodes 9 which emit substantially white light are employed as lighting emitters. On account of the small amount of waste heat of the light-emitting diodes 9 the lighting device can be particularly easily integrated into existing subassemblies of the motor vehicle, in particular into the outside mirrors, inside mirror, trim strips and door handles, and can serve to illuminate the region around the vehicle or the interior of the vehicle.

Claims

1. A vehicular lighting system suitable for use in a motor vehicle, the system comprising:

a subassembly of the vehicle, said subassembly comprising one of an interior rearview mirror assembly, an outside mirror assembly, a door handle assembly, a bumper, a trim element, a luggage-compartment cover, a sunroof-operating module, an engine-compartment cover, a glove compartment, an ashtray, a storage compartment, and a seat;

a lighting module included in said subassembly of the vehicle, said lighting module comprising at least one white light emitting diode;

said lighting module further comprising electrical circuitry for supplying electrical power to said at least one white light emitting diode;

wherein said at least one white light emitting diode individually emits substantially white light when said at least one white light emitting diode is powered by said electrical circuitry; and

wherein said electrical circuitry and said at least one white light emitting diode are commonly mounted on a circuit element.

2. The lighting system in accordance with claim 1, wherein said at least one white light emitting diode comprises at least two white light emitting diodes.

3. The lighting system in accordance with claim 1, wherein said lighting module comprises said at least one white light emitting diode and a second light emitting diode and wherein said at least one white light emitting diode has a first light beam axis and said second light emitting diode has a second light beam axis, said second light beam axis being nonparallel to said first light beam axis.

4. The lighting system in accordance with claim 1, said lighting module further comprising a lens arranged in a beam path of light emitted by said at least one white light emitting diode.

5. The lighting system in accordance with claim 1, wherein said circuit element comprises a circuit board.

6. The lighting system in accordance with claim 1, wherein said circuit element comprises a conductor foil.

7. The lighting system in accordance with claim 1, wherein said lighting module is protected against penetration of moisture.

8. The lighting system in accordance with claim 1, wherein said subassembly comprises an outside mirror assembly and wherein said lighting module illuminates the entry region adjacent a door of the vehicle when said at least one white light emitting diode is powered by said electrical circuitry.

9. The lighting system in accordance with claim 1, wherein a transparent cover is provided in a beam path of light emitted by said least one first white light emitting diode.

10. The lighting system in accordance with claim 9, wherein said transparent cover has a diode side facing said at least one white light emitting diode, said transparent cover diode side comprising a lens.

11. The lighting system in accordance with claim 9, wherein said transparent cover comprises a plastic material.

12. The lighting system in accordance with claim 1, wherein said lighting module comprises a module housing and a transparent cover and wherein said lighting module housing and said cover are manufactured jointly in a multicomponent injection molding process.

13. The lighting system in accordance with claim 12, further comprising a clip connection connecting said transparent cover to said lighting module housing.

14. The lighting system in accordance with claim 1, wherein said electrical circuitry comprises a non-linear resistance network connected with said at least one white light emitting diode.

15. The lighting system in accordance with claim 1, wherein said electrical circuitry comprises a pulse width modulation circuit connected with said at least one white light emitting diode.

16. The lighting system in accordance with claim 1, wherein said electrical circuitry comprises a diode connected with said at least one white light emitting diode.

17. The lighting system in accordance with claim 1, further comprising a temperature sensor, said electrical circuitry controlling the current supply to said at least one white light emitting diode as a function of temperature measured by said temperature sensor.

18. The lighting system in accordance with claim 1, further comprising a light-guiding element for said at least one white light emitting diode.

19. The lighting system in accordance with claim 18 wherein said light-guiding element comprises a tube.

20. The lighting system in accordance with claim 1, wherein said subassembly comprises an interior rearview mirror assembly.

21. The lighting system in accordance with claim 1, wherein said subassembly comprises an outside mirror assembly.

22. The lighting system in accordance with claim 1, wherein said subassembly comprises a trim element.

23. The lighting system in accordance with claim 1, wherein said subassembly comprises an interior rearview mirror assembly and wherein said lighting module comprises at least one of a reading lamp, a console-illuminating lamp and a gear-shift lever illuminating lamp.

24. The lighting system in accordance with claim 1, wherein said subassembly comprises an interior rearview mirror and wherein said lighting module comprises a reading lamp.

25. The lighting system in accordance with claim 1, wherein said subassembly comprises a trim element and wherein said lighting module comprises an interior cabin illuminating lamp.

26. The lighting system in accordance with claim 1, further comprising another lighting module adapted for attachment to the vehicle including another at least one white light emitting diode, said another at least one white light emitting diode individually emitting substantially white light when electrically powered.

27. The lighting system in accordance with claim 26, wherein said another lighting module is adapted for attachment to an outside mirror assembly of the vehicle.

28. The lighting system in accordance with claim 1, wherein said lighting module is removable from said subassembly of the vehicle.

29. The lighting system in accordance with claim 22, wherein said lighting module is removable from said trim element of the vehicle.

30. The lighting system in accordance with claim 1, wherein said subassembly comprises an interior rearview mirror assembly, wherein said interior rearview mirror assembly comprises a mirror housing having a driver side portion and a passenger side portion, said interior rearview mirror assembly further comprising a mirror mount for attachment of said interior rearview mirror assembly to an interior portion of the vehicle and wherein said lighting module radiates light generally downwardly from said interior rearview mirror assembly.

31. The lighting system in accordance with claim 30, wherein said lighting module comprises a driver side lighting assembly included at said driver side portion of said mirror housing.

32. The lighting system in accordance with claim 30, wherein said lighting module comprises a passenger side lighting assembly included at said passenger side portion of said mirror housing.

33. The lighting system in accordance with claim 30, wherein said mirror mount includes said lighting module.

34. A system of claim 30, wherein said lighting module is positioned in a pod attached to said mirror mount.

35. A vehicular lighting system suitable for use in a motor vehicle, the system comprising:

a subassembly of the vehicle, said subassembly comprising one of an interior rearview mirror assembly, an outside mirror assembly, a door handle assembly, a bumper, a trim element, a luggage-compartment cover, a sunroof-operating module, an engine-compartment cover, a glove compartment, an ashtray, a storage compartment, and a seat;

a lighting module included in said subassembly of the vehicle, said lighting module comprising at least one white light emitting diode;

said subassembly further comprising electrical circuitry for supplying electrical power to said at least one white light emitting diode;

wherein said at least one white light emitting diode individually emits substantially white light when said at least one white light emitting diode is powered by said electrical circuitry; and

wherein said lighting module is protected against penetration of moisture.

36. The lighting system in accordance with claim 35, wherein said at least one white light emitting diode comprises at least two white light emitting diodes.

37. The lighting system in accordance with claim 35, wherein said lighting module comprises said at least one white light emitting diode and a second light emitting diode and wherein said at least one white light emitting diode has a first light beam axis and said second light emitting diode has a second light beam axis, said second light beam axis being nonparallel to said first light beam axis.

38. The lighting system in accordance with claim 35, said lighting module further comprising a lens arranged in a beam path of light emitted by said at least one white light emitting diode.

39. The lighting system in accordance with claim 35, wherein said lighting module includes said electrical circuitry and wherein said electrical circuitry and said at least one white light emitting diode are commonly mounted on a circuit element.

40. The lighting system in accordance with claim 39, wherein said circuit element comprises a conductor foil.

41. The lighting system in accordance with claim 39, wherein said circuit element comprises a circuit board.

42. The lighting system in accordance with claim 35, wherein said subassembly comprises an outside mirror assembly and wherein said lighting module illuminates the entry region adjacent a door of the vehicle when said at least one white light emitting diode is powered by said electrical circuitry.

43. The lighting system in accordance with claim 35, wherein a transparent cover is provided in a beam path of light emitted by said least one first white light emitting diode.

44. The lighting system in accordance with claim 43, wherein said transparent cover has a diode side facing said at least one white light emitting diode, said transparent cover diode side comprising a lens.

45. The lighting system in accordance with claim 43, wherein said transparent cover comprises a plastic material.

46. The lighting system in accordance with claim 35, wherein said lighting module comprises a module housing and a transparent cover and wherein said lighting module housing and said cover are manufactured jointly in a multicomponent injection molding process.

47. The lighting system in accordance with claim 46, further comprising a clip connection connecting said transparent cover to said lighting module housing.

48. The lighting system in accordance with claim 35, wherein said electrical circuitry comprises a non-linear resistance network connected with said at least one white light emitting diode.

49. The lighting system in accordance with claim 35, wherein said electrical circuitry comprises a pulse width modulation circuit connected with said at least one white light emitting diode.

50. The lighting system in accordance with claim 35, wherein said electrical circuitry comprises a diode connected with said at least one white light emitting diode.

51. The lighting system in accordance with claim 35, further comprising:

a temperature sensor, said electrical circuitry controlling the current supply to said at least one white light emitting diode as a function of temperature measured by said temperature sensor.

52. The lighting system in accordance with claim 35, further comprising a light-guiding element for said at least one white light emitting diode.

53. The lighting system in accordance with claim 52 wherein said light-guiding element comprises a tube.

54. The lighting system in accordance with claim 35, wherein said subassembly comprises an interior rearview mirror assembly.

55. The lighting system in accordance with claim 35, wherein said subassembly comprises an outside mirror assembly.

56. The lighting system in accordance with claim 35, wherein said subassembly comprises a trim element.

57. The lighting system in accordance with claim 35, wherein said subassembly comprises an interior rearview mirror assembly and wherein said lighting module comprises at least one of a reading lamp, a console-illuminating lamp and a gear-shift lever illuminating lamp.

58. The lighting system in accordance with claim 35, wherein said subassembly comprises an interior rearview mirror and wherein said lighting module comprises a reading lamp.

59. The lighting system in accordance with claim 35, wherein said subassembly comprises a trim element and wherein said lighting module comprises an interior cabin illuminating lamp.

60. The lighting system in accordance with claim 35, further comprising another lighting module adapted for attachment to the vehicle including another at least one white light emitting diode, said another at least one white light emitting diode individually emitting substantially white light when electrically powered.

61. The lighting system in accordance with claim 60, wherein said another lighting module is adapted for attachment to an outside mirror assembly of the vehicle.

62. The lighting system in accordance with claim 35, wherein said lighting module is removable from said subassembly of the vehicle.

63. The lighting system in accordance with claim 56, wherein said lighting module is removable from said trim element of the vehicle.

64. The lighting system in accordance with claim 35, wherein said subassembly comprises an interior rearview mirror assembly, wherein said interior rearview mirror assembly comprises a mirror housing having a driver side portion and a passenger side portion, said interior rearview mirror assembly further comprising a mirror mount for attachment of said interior rearview mirror assembly to an interior portion of the vehicle and wherein said lighting module radiates light generally downwardly from said interior rearview mirror assembly.

65. The lighting system in accordance with claim 64, wherein said lighting module comprises a driver side lighting assembly included at said driver side portion of said mirror housing.

66. The lighting system in accordance with claim 64, wherein said lighting module comprises a passenger side lighting assembly included at said passenger side portion of said mirror housing.

67. The lighting system in accordance with claim 64, wherein said mirror mount includes said lighting module.

68. A system of claim 64, wherein said lighting module is positioned in a pod attached to said mirror mount.

69. A vehicular lighting system suitable for use in a motor vehicle, the system comprising:

a subassembly of the vehicle, said subassembly comprising one of an interior rearview mirror assembly and an outside mirror assembly;

a lighting module included in said subassembly of the vehicle, said lighting module comprising at least one white light emitting diode;

said subassembly further comprising electrical circuitry for supplying electrical power to said at least one white light emitting diode;

wherein said at least one white light emitting diode individually emits substantially white light when said at least one white light emitting diode is powered by said electrical circuitry;

wherein said lighting module is protected against penetration of moisture; and

wherein said lighting module is removable from said subassembly of the vehicle.

70. The lighting system in accordance with claim 69, wherein said at least one white light emitting diode comprises at least two white light emitting diodes.

71. The lighting system in accordance with claim 69, wherein said lighting module comprises said at least one white light emitting diode and a second light emitting diode and wherein said at least one white light emitting diode has a first light beam axis and said second light emitting diode has a second light beam axis, said second light beam axis being nonparallel to said first light beam axis.

72. The lighting system in accordance with claim 69, said lighting module further comprising a lens arranged in a beam path of light emitted by said at least one white light emitting diode.

73. The lighting system in accordance with claim 69, wherein said lighting module includes said electrical circuitry and wherein said electrical circuitry and said at least one white light emitting diode are commonly mounted on a circuit element.

74. The lighting system in accordance with claim 73, wherein said circuit element comprises a conductor foil.

75. The lighting system in accordance with claim 73, wherein said circuit element comprises a circuit board.

76. The lighting system in accordance with claim 69, wherein said subassembly comprises an outside mirror assembly and wherein said lighting module illuminates the entry region adjacent a door of the vehicle when said at least one white light emitting diode is powered by said electrical circuitry.

77. The lighting system in accordance with claim 69, wherein a transparent cover is provided in a beam path of light emitted by said least one first white light emitting diode.

78. The lighting system in accordance with claim 77, wherein said transparent cover has a diode side facing said at least one white light emitting diode, said transparent cover diode side comprising a lens.

79. The lighting system in accordance with claim 77, wherein said transparent cover comprises a plastic material.

80. The lighting system in accordance with claim 69, wherein said lighting module comprises a module housing and a transparent cover and wherein said lighting module housing and said cover are manufactured jointly in a multicomponent injection molding process.

81. The lighting system in accordance with claim 80, further comprising a clip connection connecting said transparent cover to said lighting module housing.

82. The lighting system in accordance with claim 69, wherein said electrical circuitry comprises a non-linear resistance network connected with said at least one white light emitting diode.

83. The lighting system in accordance with claim 69, wherein said electrical circuitry comprises a pulse width modulation circuit connected with said at least one white light emitting diode.

84. The lighting system in accordance with claim 69, wherein said electrical circuitry comprises a diode connected with said at least one white light emitting diode.

85. The lighting system in accordance with claim 69, further comprising a temperature sensor, said electrical circuitry controlling the current supply to said at least one white light emitting diode as a function of temperature measured by said temperature sensor.

86. The lighting system in accordance with claim 69, further comprising a light-guiding element for said at least one white light emitting diode.

87. The lighting system in accordance with claim 86 wherein said light-guiding element comprises a tube.

88. The lighting system in accordance with claim 69, wherein said subassembly comprises an interior rearview mirror assembly.

89. The lighting system in accordance with claim 69, wherein said subassembly comprises an outside mirror assembly.

90. The lighting system in accordance with claim 69, wherein said outside mirror assembly comprises a fold-away outside mirror assembly.

91. The lighting system in accordance with claim 69, wherein said subassembly comprises an interior rearview mirror assembly and wherein said lighting module comprises at least one of a reading lamp, a console-illuminating lamp and a gear-shift lever illuminating lamp.

92. The lighting system in accordance with claim 69, wherein said subassembly comprises an interior rearview mirror assembly and wherein said lighting module comprises a reading lamp.

93. The lighting system in accordance with claim 69, wherein said subassembly comprises an interior rearview mirror and wherein said lighting module comprises a console-illuminating lamp.

94. The lighting system in accordance with claim 69, further comprising another lighting module adapted for attachment to the vehicle including another at least one white light emitting diode, said another at least one white light emitting diode individually emitting substantially white light when electrically powered.

95. The lighting system in accordance with claim 94, wherein said another lighting module is adapted for attachment to one of a door handle assembly, a bumper, a trim element, a luggage-compartment cover, a sunroof-operating module, an engine-compartment cover, a glove compartment, an ashtray, a storage compartment, and a seat of the vehicle.

96. The lighting system in accordance with claim 69, wherein said subassembly comprises an interior rearview mirror and wherein said lighting module comprises a gear-shift lever illuminating lamp.

97. The lighting system in accordance with claim 75, wherein said circuit board comprises a printed circuit board.

98. The lighting system in accordance with claim 69, wherein said subassembly comprises an interior rearview mirror assembly, wherein said interior rearview mirror assembly comprises a mirror housing having a driver side portion and a passenger side portion, said interior rearview mirror assembly further comprising a mirror mount for attachment of said interior rearview mirror assembly to an interior portion of the vehicle and wherein said lighting module radiates light generally downwardly from said interior rearview mirror assembly.

99. The lighting system in accordance with claim 98, wherein said lighting module comprises a driver side lighting assembly included at said driver side portion of said mirror housing.

100. The lighting system in accordance with claim 98, wherein said lighting module comprises a passenger side lighting assembly included at said passenger side portion of said mirror housing.

101. The lighting system in accordance with claim 98, wherein said mirror mount includes said lighting module.

102. A system of claim 98, wherein said lighting module is positioned in a pod attached to said mirror mount.

103. A vehicular lighting system suitable for use in a motor vehicle, the system comprising:

a subassembly of the vehicle, said subassembly comprising an outside mirror assembly;

a lighting module included in said subassembly of the vehicle, said lighting module comprising at least one white light emitting diode;

said subassembly further comprising electrical circuitry for supplying electrical power to said at least one white light emitting diode;

wherein said at least one white light emitting diode individually emits substantially white light when said at least one white light emitting diode is powered by said electrical circuitry;

wherein said lighting module is protected against penetration of moisture; and

wherein said lighting module illuminates the entry region adjacent a door of the vehicle when said at least one white light emitting diode is powered by said electrical circuitry.

104. The lighting system in accordance with claim 103, wherein said at least one white light emitting diode comprises at least two white light emitting diodes.

105. The lighting system in accordance with claim 103, wherein said lighting module comprises said at least one white light emitting diode and a second light emitting diode and wherein said at least one white light emitting diode has a first light beam axis and said second light emitting diode has a second light beam axis, said second light beam axis being nonparallel to said first light beam axis.

106. The lighting system in accordance with claim 103, said lighting module further comprising a lens arranged in a beam path of light emitted by said at least one white light emitting diode.

107. The lighting system in accordance with claim 103, wherein said lighting module includes said electrical circuitry and wherein said electrical circuitry and said at least one white light emitting diode are commonly mounted on a circuit element.

108. The lighting system in accordance with claim 107, wherein said circuit element comprises a conductor foil.

109. The lighting system in accordance with claim 107, wherein said circuit element comprises a circuit board.

110. The lighting system in accordance with claim 103, wherein said lighting module is removable from said subassembly of the vehicle.

111. The lighting system in accordance with claim 103, wherein a transparent cover is provided in a beam path of light emitted by said least one first white light emitting diode.

112. The lighting system in accordance with claim 111, wherein said transparent cover has a diode side facing said at least one white light emitting diode, said transparent cover diode side comprising a lens.

113. The lighting system in accordance with claim 111, wherein said transparent cover comprises a plastic material.

114. The lighting system in accordance with claim 103, wherein said lighting module comprises a module housing and a transparent cover and wherein said lighting module housing and said cover are manufactured jointly in a multicomponent injection molding process.

115. The lighting system in accordance with claim 114, further comprising a clip connection connecting said transparent cover to said lighting module housing.

116. The lighting system in accordance with claim 103, wherein said electrical circuitry comprises a non-linear resistance network connected with said at least one white light emitting diode.

117. The lighting system in accordance with claim 103, wherein said electrical circuitry comprises a pulse width modulation circuit connected with said at least one white light emitting diode.

118. The lighting system in accordance with claim 103, wherein said electrical circuitry comprises a diode connected with said at least one white light emitting diode.

119. The lighting system in accordance with claim 103, further comprising:

a temperature sensor, said electrical circuitry controlling the current supply to said at least one white light emitting diode as a function of temperature measured by said temperature sensor.

120. The lighting system in accordance with claim 103, further comprising a light-guiding element for said at least one white light emitting diode.

121. The lighting system in accordance with claim 120 wherein said light-guiding element comprises a tube.

122. The lighting system in accordance with claim 103, wherein said lighting module includes said electrical circuitry.

123. The lighting system in accordance with claim 103, wherein said outside mirror assembly includes a mirror element, said mirror element supported on a carrier plate and adjustable by an electrical drive.

124. The lighting system in accordance with claim 103, wherein said outside mirror assembly comprises a fold-away outside mirror assembly.