Vehicle lamp

Patent metadata

Field	Value
Publication number	US-2019056082-A1
Application number	US-201716075548-A
Country	US
Kind code	A1
Filing date	Feb 3, 2017
Priority date	Feb 4, 2016
Publication date	Feb 21, 2019
Grant date	—

Abstract

In order to provide a vehicle lamp in which the number of components for enabling a shade to move is small, this vehicle lamp is equipped with a light source, a heat sink, a reflector that reflects light from the light source forward, a lens that radiates light forward, and a light distribution pattern switching part that is disposed between the lens and the light source. The light distribution pattern switching part is equipped with a bracket, a crank that is supported by a bracket support section, a shade that moves rotationally so as to switch the light distribution pattern, and a support shaft that rotatably supports the shade and is secured to the bracket. The crank is equipped with a rotating shaft section that is supported by the bracket support section so as to be able to rotate horizontally across the bracket, and a rotational movement section which is disposed on one end of the rotating shaft section and which causes the shade to move rotationally by rotating in the vertical direction around the rotating shaft. The support shaft is disposed so as to cut horizontally across the rotating shaft section of the crank so that the rotating shaft section of the crank does not separate from the bracket support section.

First claim

1 . A vehicle lamp comprising:
a light source; a heat sink on which the light source is disposed; a reflector that is disposed above the heat sink and reflects light from the light source toward a front side; a lens that is disposed further front side than the light source and irradiates the light toward the front side; and a light distribution pattern switching part that is disposed between the lens and the light source and switches a light distribution pattern, wherein the light distribution pattern switching part includes a bracket, a crank that is supported by a support part of the bracket, a shade that performs a rotation action to switch the light distribution pattern, and a support shaft that rotatably supports the shade and is fixed on the bracket, the crank includes a rotating shaft part that extends across the bracket to be rotatably supported by the support part of the bracket, and a rotation action part that is formed at one end of the rotating shaft part and vertically rotates about the rotating shaft part to perform a rotation action of the shade, and wherein the support shaft is disposed to cross the rotating shaft part of the crank so as not to remove the rotating shaft part of the crank from the support part of the bracket.

2 . The vehicle lamp according to claim 1 , further comprising a drive unit for rotating the crank, wherein
the crank includes a power transmission shaft part that is formed at the other end of the rotating shaft part and has a coupling part coupled to the drive unit at a distal end.

3 . The vehicle lamp according to claim 2 , wherein
the drive unit is disposed on a vertically lower side on a side of the other end of the rotating shaft part, the power transmission shaft part extends vertically downward from the other end of the rotating shaft part so as to form a substantially L-shape with the rotating shaft part, and the coupling part at the distal end of the power transmission shaft part is coupled to the drive unit, and the rotation action part horizontally extends from the one end of the rotating shaft part so as to form a substantially L-shape with the rotating shaft part.

4 . The vehicle lamp according to claim 2 , wherein the drive unit is fixed to a rear surface of the bracket.

5 . The vehicle lamp according to claim 1 , wherein
the bracket includes paired support shaft fixing parts supporting the support shaft, disposed at a vertically upper portion of the bracket on one side and the other side of the bracket in a horizontal direction, and paired movement restriction parts restricting movement of one and the other ends of the support shaft being disposed in the support shaft fixing part, and wherein each of the support shaft fixing parts includes a receiving part having one end connected to the bracket and receiving the support shaft at a vertically lower portion of the receiving part, and a holding part extending from the other end of the receiving part vertically upward, pressing the support shaft toward a side of the bracket, and holding the support shaft with the bracket.

6 . The vehicle lamp according to claim 1 , wherein
the shade includes a first restriction part that abuts against a front surface of the bracket and sets a first position for blocking a part of the light, and a second restriction part that is disposed to be opposite to the first restriction part with the bracket being interposed therebetween, and in a case where the shade rotates from the first position to a second position for not blocking the light, when the shade rotates over the second position, the second restriction part abutting against a rear surface of the bracket.

7 . The vehicle lamp according to claim 1 , wherein the bracket is fixed to the heat sink.

Assignees

• Ichikoh Industries Ltd

Inventors

• Abe Toshiya

Classifications

• F21S41/47 Primary

  Attachment thereof (achieving variable light distribution by movable screens F21S41/683) · CPC title

• F21S41/689

  Flaps, i.e. screens pivoting around one of their edges · CPC title

• F21S41/00

  Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps (reversing lights F21S43/00) · CPC title

• F21V29/76

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

• F21S45/47

  Passive cooling, e.g. using fins, thermal conductive elements or openings · CPC title