Lamp unit producing various beam patterns

Patent metadata

Field	Value
Publication number	US-9751453-B2
Application number	US-201615064324-A
Country	US
Kind code	B2
Filing date	Mar 8, 2016
Priority date	Jul 13, 2012
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

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.

First claim

What is claimed is:

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.

Assignees

• Lg Innotek Co Ltd

Inventors

• Cho Yun Min
• Lee Gun Kyo

Classifications

• F21S45/48

  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 title

• F21S41/153 Primary

  arranged in a matrix · CPC title

• H10W90/00

  Package configurations · CPC title

• H10W72/5473

  multiple bond wires connected to a common bond pad · CPC title

• F21Y2107/60

  on stacked substrates · CPC title