LAMP UNIT AND VEHICLE LAMP APPARATUS USING THE SAME

• US 20160025308A1
• Filed: 10/07/2015
• Published: 01/28/2016
• Est. Priority Date: 06/08/2012
• Status: Active Application

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: OH, Nam Seok
• Granted Patent: US 10,253,958 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60Q 1/0041 of several lamps in relation to each other
• CPC Class Codes: B60Q 1/2696 Mounting of devices using LEDs
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/19 Attachment of light sources or lamp holders
• CPC Class Codes: F21S 43/195 Details of lamp holders, terminals or connectors
• CPC Class Codes: F21S 43/20 characterised by refractors, transparent cover plates, light guides or filters
• 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: F21S 43/37 Attachment thereof
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 21/00 Supporting, suspending, or attaching arrangements for lighting devices F21V17/00, F21V19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q, stands for supporting apparatus or articles in general F16M11/00; Hand grips
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2103/30 curved
• 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 2115/10 Light-emitting diodes [LED]

Abstract

A lamp unit comprising a plurality of light sources; a plurality of supporting portions to support the light sources; a connector connected between two adjacent supporting portions; and an optical member disposed on the light sources and comprising a plurality of patterns disposed on a surface of the optical member, wherein the plurality of patterns is disposed on the surface corresponding to the supporting portions having an angle between a perpendicular line passing through a point on a surface of each supporting portions facing a corresponding one of the light sources and a reference line facing a predetermined reference direction of 0 to 45 degrees.

Claims

1. A lamp unit, comprising:

a plurality of light sources;

a plurality of supporting portions to support the light sources;

a connector connected between two adjacent supporting portions; and

an optical member disposed on the light sources and comprising a plurality of patterns disposed on a surface of the optical member,

wherein the plurality of patterns is disposed on the surface corresponding to the supporting portions having an angle between a perpendicular line passing through a point on a surface of each supporting portions facing a corresponding one of the light sources and a reference line facing a predetermined reference direction of 0 to 45 degrees.

2. The lamp unit of claim 1, wherein the plurality of patterns is not disposed on the surface corresponding to the supporting portions having the angle of 45.1 to 90 degrees.

3. The lamp unit of claim 1, wherein the plurality of light sources comprises a first light source, a second light source and a third light source,

wherein the plurality of supporting portions comprises a first supporting portion supporting the first light source, a second supporting portion supporting the second light source and a third supporting portion supporting the third light source,

wherein a distribution area of light emitted from each of the first light source, the second light source and the third light source includes a first distribution area adjacent to the reference line and a second distribution area distant from the reference line,

wherein an intensity of light at the first distribution area is greater than an intensity of light at the second distribution area,

wherein an intensity of the first distribution area of the second light source is greater than an intensity of the first distribution area of the first light source, and

wherein an intensity of the second distribution area of the second light source is less than an intensity of the second distribution area of the first light source.

4. The lamp unit of claim 1, wherein the plurality of light sources comprises a first light source, a second light source and a third light source,

wherein the plurality of supporting portions comprises a first supporting portion supporting the first light source, a second supporting portion supporting the second light source and a third supporting portion supporting the third light source, and

wherein a first distance between the first light source and the second light source is less than a second distance between the second light source and the third light source.

5. The lamp unit of claim 1, wherein the surface of the optical member is a curved surface having at least one radius of curvature.

6. The lamp unit of claim 1, wherein the connector is a flexible printed circuit board.

7. A lamp unit, comprising:

a plurality of light sources;

a plurality of supporting portions to support the light sources;

a connector connected between two adjacent supporting portions; and

an optical member disposed on the light sources and comprising a plurality of uneven patterns disposed on a surface of the optical member,

wherein each of the plurality of uneven patterns comprises a first surface and a second surface opposite each other,

wherein a first angle between the first surface and the surface is equal to or different from a second angle between the second surface and the surface, and

wherein the greater an angle between a perpendicular line passing through a point on the surface of each supporting portion facing a corresponding one of the light sources and a reference line facing a predetermined reference direction is, the less the first angle is.

8. The lamp unit of claim 7, wherein the greater the angle is, the greater the second angle is.

9. The lamp unit of claim 7, wherein each of the uneven patterns is formed a triangular cross-sectional shape

10. The lamp unit of claim 7, wherein the plurality of light sources comprises a first light source, a second light source and a third light source,

wherein the plurality of supporting portions comprises a first supporting portion supporting the first light source, a second supporting portion supporting the second light source and a third supporting portion supporting the third light source,

wherein a distribution area of light emitted from each of the first light source, the second light source and the third light source includes a first distribution area adjacent to the reference line and a second distribution area distant from the reference line,

wherein an intensity of light at the first distribution area is greater than an intensity of light at the second distribution area,

wherein an intensity of the first distribution area of the second light source is greater than an intensity of the first distribution area of the first light source, and

wherein an intensity of the second distribution area of the second light source is less than an intensity of the second distribution area of the first light source.

11. The lamp unit of claim 7, wherein the plurality of light sources comprises a first light source, a second light source and a third light source,

wherein the plurality of supporting portions comprises a first supporting portion supporting the first light source, a second supporting portion supporting the second light source and a third supporting portion supporting the third light source, and

wherein a first distance between the first light source and the second light source is less than a second distance between the second light source and the third light source.

12. The lamp unit of claim 7, wherein the surface of the optical member is a curved surface having at least one radius of curvature.

13. The lamp unit of claim 7, wherein the connector is a flexible printed circuit board.

14. A lamp unit, comprising:

a plurality of light sources;

a plurality of supporting portions to support the light sources;

a connector connected between two adjacent supporting portions; and

an optical member disposed on the light sources and comprising a plurality of uneven patterns disposed on a surface of the optical member,

wherein each of the plurality of uneven patterns comprises a first inclined surface having a first radius of curvature and a second inclined surface having a second radius of curvature disposed at opposite sides of each inflection point, and

wherein the greater an angle between a perpendicular line passing through a point on the surface of each supporting portions facing a corresponding one of the light sources and a reference line facing a predetermined reference direction is, the greater the first radius of curvature is.

15. The lamp unit of claim 14, wherein the greater the angle is, the less the second radius of curvature is.

16. The lamp unit of claim 14, wherein each of the uneven patterns is formed a semicircular cross-sectional shape.

17. The lamp unit of claim 14, wherein the plurality of light sources comprises a first light source, a second light source and a third light source,

wherein the plurality of supporting portions comprises a first supporting portion supporting the first light source, a second supporting portion supporting the second light source and a third supporting portion supporting the third light source,

wherein a distribution area of light emitted from each of the first light source, the second light source and the third light source includes a first distribution area adjacent to the reference line and a second distribution area distant from the reference line,

wherein an intensity of light at the first distribution area is greater than an intensity of light at the second distribution area,

wherein an intensity of the first distribution area of the second light source is greater than an intensity of the first distribution area of the first light source, and

wherein an intensity of the second distribution area of the second light source is less than an intensity of the second distribution area of the first light source.

18. The lamp unit of claim 14, wherein the plurality of light sources comprises a first light source, a second light source and a third light source,

wherein the plurality of supporting portions comprises a first supporting portion supporting the first light source, a second supporting portion supporting the second light source and a third supporting portion supporting the third light source, and

wherein a first distance between the first light source and the second light source is less than a second distance between the second light source and the third light source.

19. The lamp unit of claim 14, wherein the surface of the optical member is a curved surface having at least one radius of curvature.

20. The lamp unit of claim 14, wherein the connector is a flexible printed circuit board.