Lamp unit producing various beam patterns

• US 9,751,453 B2
• Filed: 03/08/2016
• Issued: 09/05/2017
• Est. Priority Date: 07/13/2012
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Cho, Yun Min, Lee, Gun Kyo
• Primary Examiner(s): Williams, Joseph L
• Application Number:
  US15/064,324
• Publication Number:
  US 20160185277A1
• Time in Patent Office: 546 Days
• 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, wherein at least a first light source array and a second light source array among the light source arrays are individually driven, wherein the second substrate comprises an upper surface including a first surface on which the first light source array is disposed and a second surface on which the second light source array, and wherein the first surface is higher than the second surface.

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,

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

wherein the second substrate comprises an upper surface including a first surface on which the first light source array is disposed and a second surface on which the second light source array, and

wherein the first surface is higher than the second surface.

2. The lamp unit of claim 1, wherein the upper surface of the second substrate includes a side surface disposed between the first surface and the second surface, and wherein the side surface is perpendicular to the first surface.

3. The lamp unit of claim 1, wherein a first light source included in the first light source array and a second light source included in the second light source array is disposed on different planes.

4. The lamp unit of claim 3, wherein an upper surface of the second light source is higher than the first surface.

5. The lamp unit of claim 3, wherein an upper surface of the second light source is coplanar with the first surface.

6. The lamp unit of claim 3, wherein an upper surface of the second light source is lower than the first surface.

7. The lamp unit of claim 3, wherein a first light emission direction of the first light source is different from a second light emission of the second light source.

8. The lamp unit of claim 7, wherein the first light emission is perpendicular to the second light emission.

9. The lamp unit of claim 7, wherein the first light emission is opposite to the second light emission.

10. The lamp unit of claim 1, wherein the upper surface of the second substrate includes a side surface disposed between the first surface and the second surface, and wherein the side surface is tilted at an obtuse angle with respect to the second surface.

11. The lamp unit of claim 10, wherein a third light source array is disposed on the side surface.

12. The lamp unit of claim 11, wherein a third light emission of a third light source included in the third light source array is different from a first light emission of a first light source included in the first light source array.

13. The lamp unit of claim 11, wherein a third luminous flux of a third light source included in the third light source array is different from a first luminous flux of a first light source included in the first light source array.

14. 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,

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

wherein the second substrate comprises an upper surface, and

wherein the upper surface is concave or convex.

15. The lamp unit of claim 14, wherein a first light source included in the first light source array and a second light source included in the second light source array is disposed on the upper surface of the second substrate, and wherein a first light emission direction of the first light source is different from a second light emission of the second light source.

16. 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,

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

wherein the second substrate comprises a projection protruded from an upper surface of the second substrate, and

wherein the first light source array is disposed on the projection, the second light source array is disposed on the upper surface.

17. The lamp unit of claim 16, wherein an angle between the upper surface of the second substrate and a side surface of the projection is a right angle.

18. The lamp unit of claim 16, wherein an angle between the upper surface of the second substrate and a side surface of the projection is an obtuse angle.

19. The lamp unit of claim 18, wherein a third light source array is disposed on the side surface of the projection.

20. The lamp unit of claim 19, wherein a first light emission direction of a first light source included in the first light source array is different from a third light emission of a third light source of the third light source array.