Light emission module for motor vehicle

Patent metadata

Field	Value
Publication number	US-10677414-B2
Application number	US-201715855022-A
Country	US
Kind code	B2
Filing date	Dec 27, 2017
Priority date	Jan 4, 2017
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

Light emission module, comprising a housing having at least one first opening and a second opening, a shaping optic, a light emission source, a module with mirrors disposed to receive at least a part of the light rays emitted by the light emission source, and a plurality of mirrors. The light emission module furthermore includes a cooling module configured to generate a flow of fluid circulating inside the inner space between the first and second openings in order to cool the light emission module.

First claim

The invention claimed is:

1. Light emission module including:
a housing delimiting an inner space and comprising at least one first opening and a second opening,
a shaping optic tailored to shape light rays in order to form an output beam from the light emission module,
a light emission source tailored to emit light rays in the inner space,
a module with mirrors disposed to receive at least a part of the light rays emitted by the light emission source, the module with mirrors comprising a plurality of mirrors, each one moveable between a first position in which the corresponding mirror is disposed to reflect light rays reaching it from the light emission source towards the shaping optic, and a second position in which the corresponding mirror is disposed to reflect the light rays reaching it from the light emission source away from the shaping optic,
at least one masking element disposed between the module with mirrors and the housing and configured to prevent light rays reflected from the mirrors from exiting the housing through the second opening,
a cooling module configured to generate a flow of fluid circulating inside the inner space between the first and second openings in order to cool the light emission module,
wherein the at least one masking element and the housing together define an exit passage at the second opening for the flow of fluid.

2. The light emission module, according to claim 1 , characterized in that at least a part of the mirrors is, in the second position, disposed to reflect the light rays reaching them from the light emission source towards at least one wall of the housing, the second opening being formed in the wall.

3. The light emission module, according to claim 2 , wherein the at least one masking element is disposed on an optical route between the module with mirrors and the second opening, the masking element being configured to prevent light rays coming from the mirrors and following said optical route from exiting the housing through the second opening.

4. The light emission module according to claim 3 , wherein the flow of fluid circulates in contact with the masking element.

5. The light emission module, according to claim 2 , wherein the light emission module comprises at least two masking elements extending from said wall, two masking elements delimiting between them a channel for circulating fluid exiting outside the housing through the second opening.

6. The light emission module, according to claim 2 , wherein the masking element extends from said wall.

7. The light emission module, according to claim 2 , wherein the light emission module comprises at least two masking elements extending from said wall, the two masking elements delimiting between them the passage for the fluid exiting outside the housing through the second opening.

8. The light emission module, according to claim 1 , wherein the second opening forms a fluid flow outlet opening from the housing.

9. The light emission module, according to claim 1 , wherein the housing comprises a plurality of second openings, the cooling module being configured to generate a plurality of flows of fluid, each circulating between the first opening and one of the second openings.

10. The light emission module, according to claim 1 , wherein the light emission source comprises a heat dissipater disposed through the housing or disposed outside the housing, the cooling module being furthermore configured to generate a second flow of fluid circulating in contact with the heat dissipater.

11. The light emission module according to claim 10 , wherein the fan is configured to generate simultaneously the flow of fluid circulating in the inner space of the housing and the second flow of fluid circulating in contact with the heat dissipater.

12. The light emission module, according to claim 1 , wherein the cooling module comprises a fan.

13. The light emission module, according to claim 12 , wherein an outlet of fluid from the fan is disposed opposite the first opening.

14. The light emission module, according to claim 12 , wherein the cooling module comprises a circulating conduit fluidly connecting an outlet of fluid from the fan to the first opening.

15. The light emission module, according to claim 12 , wherein the fan is an axial fan.

16. The light emission module, according to claim 12 , wherein the fan is a centrifugal fan.

17. The light emission device, wherein the device comprises a light emission module according to claim 1 .

18. The light emission device, according to claim 17 , wherein the device is a one of a motor vehicle lighting and a motor vehicle signaling device.

19. The light emission device, according to claim 17 , wherein the light emission device is configured to implement one or more photometric functions.

20. The light emission module according to claim 1 , wherein the flow of fluid circulates in contact with the masking element.

21. The light emission module, according to claim 1 , wherein
the light emission source comprises a heat dissipater disposed through the housing or disposed outside the housing proximate to the first opening, and
the cooling module is configured to generate a second flow of fluid circulating in contact with the heat dissipater.

22. The light emission module, according to claim 1 , comprising:
a second masking element disposed between the light emission source and the housing proximate to the first opening and configured to prevent light rays from the light source exiting through the first opening.

23. The light emission module, according to claim 22 , wherein the second masking element and the housing together define an entrance passage at the first opening for the flow of fluid.

Assignees

• Valeo Vision

Inventors

• Duval Christophe
• Sommerschuh Stephan

Classifications

• F21S43/31

  Optical layout thereof · CPC title

• F21S45/43 Primary

  using gas · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V29/76

  with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section · CPC title

• F21V29/673

  the fans being used for intake · CPC title