VEHICULAR LAMP

• US 20110032721A1
• Filed: 07/30/2010
• Published: 02/10/2011
• Est. Priority Date: 08/04/2009
• Status: Abandoned Application

• Current Assignee: Koito Manufacturing Company Limited
• Original Assignee: Koito Manufacturing Company Limited
• Inventors: Nobuhara, Kenji, Koizumi, Hiroya, Natsume, Kazunori
• Application Number:
  US12/847,658
• Publication Number:
  US 20110032721A1
• Time in Patent Office: Days
• US Class Current: 362/519
• CPC Class Codes: B60Q 1/0041 of several lamps in relation to each other
• CPC Class Codes: B60Q 1/2607 comprising at least two indicating lamps
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/237 rod-shaped
• CPC Class Codes: F21S 43/241 of complex shape
• CPC Class Codes: F21S 43/243 emitting light from one or more of its extremities
• CPC Class Codes: F21S 43/245 emitting light from one or more of its major surfaces
• CPC Class Codes: F21S 43/247 with a single light source being coupled into the light guide
• CPC Class Codes: F21S 43/249 with two or more light sources being coupled into the light guide
• 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 43/315 using total internal reflection
• CPC Class Codes: F21S 43/40 characterised by the combination of reflectors and refractors
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21V 7/0091 using total internal reflection
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A vehicular lamp includes a body that opens forward; an outer cover attached to the body so as to cover the opening; a first light source disposed within a lamp chamber formed from the body and the outer cover; an optical member that reflects first light source light from the first light source forward; a second light source disposed within the lamp chamber; and a light guide in which an end portion thereof receives second light source light from the second light source and an extended side surface thereof radiates forward at least a portion of the second light source light. The light guide is provided at a position that does not block a light component that forms a main light distribution of the first light source light.

Claims

1. A vehicular lamp comprising:

a body that opens forward;

an outer cover attached to the body so as to cover the opening;

a first light source disposed within a lamp chamber formed from the body and the outer cover;

an optical member that reflects first light source light from the first light source forward;

a second light source disposed within the lamp chamber; and

a light guide in which an end portion thereof receives second light source light from the second light source and an extended side surface thereof radiates forward at least a portion of the second light source light,

wherein the light guide is provided at a position that does not block a light component that forms a main light distribution of the first light source light.

2. The vehicular lamp according to claim 1,

wherein the light guide is provided in a plurality, with the plurality of light guides provided parallel to, and separate from one another, forward of the optical member within the lamp chamber, and

wherein the optical member reflects the first light source light such that the light component that forms the main light distribution passes between the plurality of light guides.

3. The vehicular lamp according to claim 1,

wherein the light guide is shaped as a bar that extends parallel to a plane perpendicular to an optical axis of the main light distribution, and

wherein the optical member condenses the first light source light so as to connect with a focal point in the vicinity of the light guide.

4. The vehicular lamp according to claim 1,

wherein the optical member comprises a transmission portion disposed forward of the first light source and transmits the first light source light, and

wherein the light guide is provided at a position that does not block transmitted light that is transmitted through the transmission portion.

5. The vehicular lamp according to claim 4,

wherein the first light source is a semiconductor light-emitting element that emits the first light source light forward around an optical axis.

6. The vehicular lamp according to claim 2,

wherein the light guide is shaped as a bar that extends parallel to a plane perpendicular to an optical axis of the main light distribution, and

wherein the optical member condenses the first light source light so as to connect with a focal point in the vicinity of the light guide.

7. The vehicular lamp according to claim 2,

wherein the optical member comprises a transmission portion disposed forward of the first light source and transmits the first light source light, and

wherein the light guide is provided at a position that does not block transmitted light that is transmitted through the transmission portion.

8. The vehicular lamp according to claim 3,

wherein the optical member comprises a transmission portion disposed forward of the first light source and transmits the first light source light, and

wherein the light guide is provided at a position that does not block transmitted light that is transmitted through the transmission portion.

9. The vehicular lamp according to claim 6,

wherein the optical member comprises a transmission portion disposed forward of the first light source and transmits the first light source light, and

wherein the light guide is provided at a position that does not block transmitted light that is transmitted through the transmission portion.

10. The vehicular lamp according to claim 7,

wherein the first light source is a semiconductor light-emitting element that emits the first light source light forward around an optical axis.

11. The vehicular lamp according to claim 8,

wherein the first light source is a semiconductor light-emitting element that emits the first light source light forward around an optical axis.

12. The vehicular lamp according to claim 9,

wherein the first light source is a semiconductor light-emitting element that emits the first light source light forward around an optical axis.

13. A method of manufacturing a vehicular lamp comprising:

attaching an outer cover attached to a body that opens forward so as to cover the opening;

disposing a first light source within a lamp chamber formed from the body and the outer cover;

arranging an optical member to reflect first light source light from the first light source forward;

disposing a second light source within the lamp chamber; and

providing a light guide in which an end portion thereof receives second light source light from the second light source and an extended side surface thereof radiates forward at least a portion of the second light source light,

wherein the light guide is provided at a position that does not block a light component that forms a main light distribution of the first light source light.

14. The method according to claim 13,

wherein the light guide is provided in a plurality, with the plurality of light guides provided parallel to, and separate from one another, forward of the optical member within the lamp chamber, and

wherein the optical member reflects the first light source light such that the light component that forms the main light distribution passes between the plurality of light guides.

15. The method according to claim 13,

wherein the light guide is shaped as a bar that extends parallel to a plane perpendicular to an optical axis of the main light distribution, and

wherein the optical member condenses the first light source light so as to connect with a focal point in the vicinity of the light guide.

16. The method according to claim 13,

wherein the optical member comprises a transmission portion disposed forward of the first light source and transmits the first light source light, and

wherein the light guide is provided at a position that does not block transmitted light that is transmitted through the transmission portion.

17. The method according to claim 16,

wherein the first light source is a semiconductor light-emitting element that emits the first light source light forward around an optical axis.

18. The method according to claim 14,

wherein the light guide is shaped as a bar that extends parallel to a plane perpendicular to an optical axis of the main light distribution, and

wherein the optical member condenses the first light source light so as to connect with a focal point in the vicinity of the light guide.

19. The method according to claim 14,

wherein the optical member comprises a transmission portion disposed forward of the first light source and transmits the first light source light, and

wherein the light guide is provided at a position that does not block transmitted light that is transmitted through the transmission portion.

20. The method according to claim 15,

wherein the optical member comprises a transmission portion disposed forward of the first light source and transmits the first light source light, and

wherein the light guide is provided at a position that does not block transmitted light that is transmitted through the transmission portion.