LAMP UNIT AND LIGHTING SYSTEM FOR VEHICLE

• US 20140016335A1
• Filed: 07/11/2013
• Published: 01/16/2014
• Est. Priority Date: 07/13/2012
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: Gun Kyo Lee
• Inventors: CHO, Yun Min, Lee, Gun Kyo
• Granted Patent: US 9,308,858 B2
• Time in Patent Office: Days
• US Class Current: 362/466
• CPC Class Codes: B60Q 1/06 adjustable, e.g. remotely-controlled from inside vehicle B60Q1/05 takes precedence
• CPC Class Codes: B60Q 1/085 due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers B60Q1/10, B60Q1/12, B60Q1/1423 take precedence
• CPC Class Codes: F21S 41/153 arranged in a matrix
• CPC Class Codes: F21S 41/192 Details of lamp holders, terminals or connectors
• CPC Class Codes: F21S 41/663 by switching light sources by switching incandescent light sources F21S41/162
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/195 Details of lamp holders, terminals or connectors
• CPC Class Codes: F21S 45/48 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
• CPC Class Codes: F21V 7/22 characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
• CPC Class Codes: F21Y 2105/12 characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
• CPC Class Codes: F21Y 2107/10 on concave supports or substrates, e.g. on the inner side of bowl-shaped supports
• CPC Class Codes: F21Y 2107/50 on planar substrates or supports, but arranged in different planes or with differing orientation, e.g. on plate-shaped supports with steps on which light-generating elements are mounted
• CPC Class Codes: F21Y 2107/60 on stacked substrates
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/49113 the connectors connecting different bonding areas on the semiconductor or solid-state body to a common bonding area outside the body, e.g. converging wires
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 25/0756 Stacked arrangements of devices
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]

Abstract

A lamp unit may be provided that includes: a first substrate; a second substrate disposed on the first substrate; and a plurality of light sources disposed on the second substrate, wherein at least two light source arrays are provided, in each of which a plurality of the light sources are disposed in a row, and wherein at least a first light source array and a second light source array among the light source arrays are individually driven.

Claims

1. A lamp unit comprising:

a first substrate;

a second substrate disposed on the first substrate; and

a plurality of light sources disposed on the second substrate,

wherein at least two light source arrays are provided, in each of which a plurality of the light sources are disposed in a row,

and wherein at least a first light source array and a second light source array among the light source arrays are individually driven.

2. The lamp unit of claim 1, wherein the plurality of the light sources included in the first light source array are individually driven, and wherein the plurality of the light sources included in the second light source array are interlinked with the plurality of the light sources included in the first light source array.

3. The lamp unit of claim 1, wherein at least one of the numbers of luminous fluxes of distances between, light emission directions of and disposition planes of the light sources included in the first light source array and the light sources included in the second light source array are mutually different.

4. The lamp unit of claim 1, wherein a distance between a first parallel line extending from an upper surface of the light source included in the first light source array and a second parallel line extending from an upper surface of the light source included in the second light source array is less than a distance between the upper surface and a lower surface of the light source included in the first light source array or the second light source array.

5. The lamp unit of claim 1, wherein a first parallel line extending from an upper surface of the light source included in the first light source array meets an upper surface or a side surface of the light source included in the second light source array.

6. The lamp unit of claim 1, wherein the first light source array is supported by a first area of the second substrate, wherein the second light source array is supported by a second area of the second substrate, and wherein an angle between a surface of the first area of the second substrate facing the first light source array and a surface of the second area of the second substrate facing the second light source array is from 91 to 179 degrees.

7. The lamp unit of claim 1, wherein, in the light sources included in the light source array, a luminous flux of the light source disposed in the central area of the light source array is larger than a luminous flux of the light source disposed in the edge area of the light source array.

8. The lamp unit of claim 7, wherein a distance between the light sources included in the light source array is increased toward the edge area from the central area of the light source array.

9. The lamp unit of claim 1, wherein at least two of the light sources included in the light source array are disposed on different planes or have different luminous fluxes.

10. The lamp unit of claim 1, wherein the first substrate is a metal substrate having a first thermal conductivity, wherein and the second substrate is an insulating substrate having a second thermal conductivity.

11. The lamp unit of claim 10, wherein the first thermal conductivity of the first substrate is greater than the second thermal conductivity of the second substrate.

12. The lamp unit of claim 1, wherein the first substrate comprises a cavity formed in a predetermined area thereof, and the second substrate is disposed in the cavity of the first substrate.

13. The lamp unit of claim 1, wherein the first substrate and the second substrate are formed of the same material.

14. The lamp unit of claim 1, wherein a surface of the second substrate is a concave surface.

15. The lamp unit of claim 1, wherein the second substrate comprises at least one projection protruding from the surface thereof by a predetermined height.

16. The lamp unit of claim 1, further comprising a barrier disposed around a plurality of the light sources, wherein the barrier comprises a metallic reflective material.

17. The lamp unit of claim 1, wherein a distance d11 between the light sources included in the first light source array is less than a distance d13 between the light source included in the first light source array and the light source included in the second light source array.

18. The lamp unit of claim 17, wherein a ratio of the distance d11 and the distance d13 is 1:

1.1˜

1;

10.

19. A vehicle lamp device comprising:

a lamp unit generating light;

a reflector which reflects the light generated from the lamp unit and changes a direction of the light; and

a lens which refracts the light reflected from the reflector,

wherein the lamp unit uses the lamp unit stated in claim 1.

20. A vehicle lighting system comprising:

a sensor unit sensing ambient conditions of the vehicle;

a head lamp including a lamp unit which includes a first substrate, a second substrate disposed on the first substrate, and n number of light source arrays (n is an integer equal to or greater than

     2) formed by disposing a plurality of light sources on the second substrate, wherein the light source array includes a first light source array and a second light source array, which are adjacent to each other, are electrically isolated from each other and are individually driven; and

an electronic control unit individually driving the first light source array and the second light source array in accordance with the sensing result produced by the sensor unit.