Head lamp for vehicle

Patent metadata

Field	Value
Publication number	US-11378249-B2
Application number	US-202117386926-A
Country	US
Kind code	B2
Filing date	Jul 28, 2021
Priority date	Jul 29, 2020
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

A head lamp for a vehicle includes: a lamp housing; a light source disposed in the lamp housing and configured to emit light to a forward area of a vehicle; a bezel disposed on the lamp housing, spaced apart from the light source, and shaped to cover the light source; and a plurality of flip-dot units disposed in the bezel. Each flip-dot unit among the plurality of flip-dot units includes: a housing having an opening formed on one side the housing, and a space formed in the housing; and a flip disk rotatably installed in the housing and configured to selectively open and close the opening.

First claim

What is claimed is:

1. A head lamp for a vehicle, comprising:
a lamp housing;
a light source disposed in the lamp housing and configured to emit light to a forward area of a vehicle;
a bezel disposed on the lamp housing, spaced apart from the light source, and shaped to cover the light source;
a plurality of flip-dot units disposed in the bezel, wherein each flip-dot unit among the plurality of flip-dot units comprises:
a housing having an opening formed on one side of the housing, and a space formed in the housing; and
a flip disk rotatably installed in the housing and configured to selectively open and close the opening;

a sensor unit disposed in the bezel and configured to measure an internal temperature and internal humidity of the lamp housing; and
a control unit configured to transmit a flip disk operation signal to each flip-dot unit to rotate the flip disk.

2. The head lamp of claim 1 , wherein the housing comprises:
a first side portion having a plate shape, and having an air flow hole in communication with the opening;
a second side portion bent and extended from the first side portion, and configured to form the space with the first side portion; and
a third side portion bent and extended from the second side portion, disposed to face the first side portion, and having the flip disk installed thereon.

3. The head lamp of claim 2 , wherein the flip disk is configured to rotate about a rotation axis passing through a center of the third side portion.

4. The head lamp of claim 3 , wherein the flip disk has a symmetrical shape with respect to a center axis.

5. The head lamp of claim 1 , wherein the control unit is further configured to transmit the flip disk operation signal to each flip-dot unit to rotate and invert the flip disk according to the internal temperature of the lamp housing, as measured by the sensor unit.

6. The head lamp of claim 1 , wherein the control unit is further configured to transmit the flip disk operation signal to each flip-dot unit to repeatedly rotate the flip disk according to the internal humidity of the lamp housing, as measured by the sensor unit.

7. The head lamp of claim 1 , wherein the control unit is further configured to transmit the flip disk operation signal to each flip-dot unit to display a character or sign for warning an oncoming vehicle or pedestrian.

8. The head lamp of claim 1 , wherein the control unit is further configured to control the flip disk to rotate such that a heated surface of the flip disk faces the bezel, in response to the internal temperature of the lamp housing being determined to be equal to or greater than a preset value.

9. The head lamp of claim 1 , wherein the control unit is further configured to control the flip disk to repeatedly rotate such that moisture is removed from the lamp housing, in response to the internal humidity of the lamp housing being determined to be equal to or greater than a preset value.

10. A head lamp for a vehicle, comprising:
a lamp housing;
a light source disposed in the lamp housing and configured to emit light to a forward area of a vehicle;
a bezel disposed on the lamp housing, spaced apart from the light source, and shaped to cover the light source;
a plurality of flip-dot units disposed in the bezel, wherein each flip-dot unit among the plurality of flip-dot units comprises:
a housing having an opening formed on one side of the housing, and a space formed in the housing; and
a flip disk rotatably installed in the housing and configured to selectively open and close the opening; and

a control unit configured to control the flip disk to rotate such that a heated surface of the flip disk faces the bezel in response to an internal temperature of the lamp housing being determined to be equal to or greater than a preset value.

11. A head lamp for a vehicle, comprising:
a lamp housing;
a light source disposed in the lamp housing and configured to emit light to a forward area of a vehicle;
a bezel disposed on the lamp housing, spaced apart from the light source, and shaped to cover the light source;
a plurality of flip-dot units disposed in the bezel, wherein each flip-dot unit among the plurality of flip-dot units comprises:
a housing having an opening formed on one side of the housing, and a space formed in the housing; and
a flip disk rotatably installed in the housing and configured to selectively open and close the opening; and

a control unit configured to control the flip disk to repeatedly rotate such that moisture is removed from the lamp housing in response to an internal humidity of the lamp housing being determined to be equal to or greater than a preset value.

Assignees

• Hyundai Mobis Co Ltd

Inventors

• Kim Do Hyung
• Jin Tae Kyoung
• Kim Moo Kwan

Classifications

• F21S45/40

  Cooling of lighting devices · CPC title

• G09F21/04

  by land vehicles · CPC title

• F21S41/40 Primary

  characterised by screens, non-reflecting members, light-shielding members or fixed shades · CPC title

• F21S45/50

  Waterproofing · CPC title

• F21S45/33 Primary

  specially adapted for headlamps · CPC title