Vehicle lamp

Patent metadata

Field	Value
Publication number	US-10889234-B2
Application number	US-201816477924-A
Country	US
Kind code	B2
Filing date	Jan 19, 2018
Priority date	Jan 20, 2017
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

The vehicle lamp according to the present invention includes: a light source; a movable shade rotating in a front-back direction and switchable to a second position where some of light from the light source is blocked; a power section having a moving shaft moving in a horizontal direction; and a power-transmitting section transmitting a moving force of the moving shaft, as a rotary force of the movable shade. The moving shaft has an engagement groove with which the power-transmitting section is engaged. The power-transmitting section includes a second arm having an engagement section slidably engaged with the engagement groove. The engagement section includes a first engagement section engaged with the engagement groove and extending in the front-back direction, and a second engagement section that has a substantially linear shape, is engaged with the engagement groove and is connected to and bent with respect to the first engagement section.

First claim

The invention claimed is:

1. A vehicle lamp comprising:
a light source; and
a movable shade section, wherein
the movable shade section includes:
a movable shade that rotates in a front-back direction and is switchable between a first position where light from the light source is not blocked and a second position where some of the light is blocked;
a power section having a moving shaft that moves in a horizontal direction to cause the rotation of the movable shade; and
a power-transmitting section that is interposed between the movable shade and the power section and transmits a moving force of the moving shaft as a rotary force of the movable shade,

the moving shaft has, on an outer circumference thereof, an engagement groove with which the power-transmitting section is engaged,
the power-transmitting section includes:
a bearing section that is provided in an intermediate portion thereof and is supported to be rotatable in the horizontal direction orthogonal to the front-back direction;
a first arm that extends from the bearing section toward the movable shade side and is engaged with the movable shade; and
a second arm that extends from the bearing section toward the moving shaft side and has an engagement section slidably engaged with the engagement groove,

the engagement section includes:
a first engagement section that is engaged with the engagement groove and extends in the front-back direction; and
a second engagement section that has a substantially linear shape, is engaged with the engagement groove and is connected to and bent with respect to the first engagement section,

in a side view in which the movable shade section is viewed from a side, when a straight line that connects a rotation fulcrum at the time when the power-transmitting section rotates in the front-back direction and a center point of a cross section of the moving shaft is set as a reference line, an angle on the rotation fulcrum side, which is formed by the reference line and a portion of the second engagement section on an opposite side to the first engagement section relative to an intersection point where the second engagement section and the reference line intersect with each other, is set to equal to or larger than 80 degrees and equal to or smaller than 110 degrees,
the movable shade section includes a bracket provided with the movable shade, the power section, and the power-transmitting section,
the bracket includes a support shaft that extends along the front-back direction and rotatably supports the bearing section,
when the bearing section supported by the support shaft is viewed in a side view in which the movable shade section is viewed from the side, the rotation fulcrum is located at a substantially center position of the bearing section,
the movable shade is attached to an upper portion of the bracket via a shaft section that supports the movable shade to be rotatable in the front-back direction,
the power section is attached to a front side surface of the bracket,
the support shaft extends to the back along the front-back direction from a back side surface of the bracket,
the bracket has a lead-out section that leads out the engagement section of the second arm of the power-transmitting section such that the engagement section is positioned on a front side, and
the lead-out section is formed not to hinder motion of the second arm associated with movement of the moving shaft of the power section.

2. The vehicle lamp according to claim 1 , wherein
the second engagement section has such a length that the second engagement section is not disengaged from the engagement groove at the time of sliding along the engagement groove in association with the rotation of the power-transmitting section in the front-back direction.

3. The vehicle lamp according to claim 1 , wherein
the engagement groove has a width that is equal to or larger than 1.1 times and equal to or smaller than 1.5 times a diameter of a cross section of the power-transmitting section.

4. The vehicle lamp according to claim 1 , wherein
the power-transmitting section is formed of a wire, and
the bearing section is a portion of the wire that is bent in a loop shape.

5. The vehicle lamp according to claim 1 , wherein
the first engagement section extends in parallel to the support shaft.

6. A vehicle lamp comprising a light source, and a movable shade section, wherein
the movable shade section includes a movable shade that rotates in a front-back direction about a rotation center shaft and is switchable between a first position where light from the light source is not blocked and a second position where the movable shade has a lifted posture from the first position and some of the light is blocked,
the movable shade includes:
a main body section that has an upper end shaped to form a cutoff line; and
an auxiliary section that is connected to a lower portion of the main body section in a vertical direction, and

when the movable shade is positioned at the second position, at least a portion of the auxiliary section that is lower than the rotation center shaft in the vertical direction is bent toward the main body section side so as to be positioned on the main body section side.

7. The vehicle lamp according to claim 6 , wherein
when viewed in a state where the movable shade is positioned at the second position, the auxiliary section includes:
a lower portion which is located on a back side of the main body section and at least a part of which is positioned closer to the main body section side than the rotation center shaft;
an intermediate portion that is bent from the lower portion and extends through a position above the rotation center shaft in the vertical direction so as to more separate from the main body section than the rotation center shaft; and
an upper portion that is bent from the intermediate portion and extends upward in the vertical direction, and

the upper portion has an upper end shaped to be form a cutoff line.

8. The vehicle lamp according to claim 7 , wherein
the lower portion is in substantially tight contact with the main body section.

9. The vehicle lamp according to claim 7 , wherein
a portion of the upper end of the upper portion where the cutoff line is formed is set to have a thickness smaller than a thickness of a portion of the upper portion on the intermediate portion side.

10. The vehicle lamp according to claim 6 , wherein
the movable shade section includes a bracket to which the movable shade is attached,
the movable shade is attached to an upper portion of the bracket via a shaft section that serves as the rotation center shaft for supporting the movable shade in the front-back direction, and
the movable shade includes:
a front-side rotation restricting section that abuts a front side surface of the bracket to restrict the rotation of the movable shade to the front at the time when the movable shade rotates to the front and that causes the movable shade to position at the second position; and
a rear-side rotation restricting section that abuts a back side surface of the bracket to restrict the rotation of the movable shade to the back at the time when the movable shade rotates to the back.

11. The vehicle lamp according to claim 10 , wherein
the movable shade section includes:
a power section that is attached to the bracket and has a moving shaft that moves in a horizontal direction to cause the rotation of the movable shade; and
a power-transmitting section that is attached to the bracket to be rotatable in the horizontal direction, is interposed between the movable shade and the moving shaft, and transmits a moving force of the moving shaft as

Assignees

• Ichikoh Industries Ltd

Inventors

• Abe Toshiya

Classifications

• F21S41/689 Primary

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

• F21S41/148

  the main emission direction of the LED being perpendicular to the optical axis · CPC title

• F21V11/183

  pivotable · CPC title

• F21S45/47

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

• F21V14/08

  by movement of the screens {or filters} · CPC title