Vehicular headlamp with coplanar low-beam and high-beam light sources

Patent metadata

Field	Value
Publication number	US-12092283-B2
Application number	US-202118250772-A
Country	US
Kind code	B2
Filing date	Oct 29, 2021
Priority date	Oct 30, 2020
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A vehicular headlamp includes a first light source for emitting a first light forward; a second light source disposed above the first light source and for emitting a second light forward; a first reflecting surface disposed in front of the first light source for reflecting the first light upward; a second reflecting surface disposed above the second light source for reflecting forward the first light reflected by the first reflecting surface; a third reflecting surface disposed above the second light source and below the second reflecting surface, is connected to the second reflecting surface, for reflecting the second light forward; and a projection lens disposed in front of the first, second, and third reflecting surfaces. The first and second light sources disposed on the same plane.

First claim

The invention claimed is:

1. A vehicular headlamp comprising:
a first light source that emits first light forward;
a second light source that is disposed above the first light source and emits second light forward;
a first reflecting surface that is disposed in front of the first light source, and reflects the first light upward;
a second reflecting surface that is disposed above the second light source, and reflects, forward, the first light which reaches from the first light source via the first reflecting surface;
a third reflecting surface that is disposed above the second light source and below the second reflecting surface in a state of extending in a front-rear direction, is connected to the second reflecting surface at an edge portion so as to share the edge portion with the second reflecting surface, and reflects the second light from the second light source forward; and
a projection lens that is disposed in front of the first reflecting surface, the second reflecting surface, and the third reflecting surface, and irradiates the first light and the second light forward, wherein
the first light source and the second light source are disposed on the same plane.

2. The vehicular headlamp according to claim 1 , wherein
the edge portion is disposed in a vicinity of a focal point of the projection lens,
the second light source is disposed below an optical axis of the projection lens and behind the focal point of the projection lens, and
the first light source and the second light source are disposed such that respective emission axes of the first light and the second light face forward and diagonally upward.

3. The vehicular headlamp according to claim 1 , further comprising
a substrate having a planar mounting surface mounted with the first light source and the second light source thereon, wherein
the substrate is disposed such that a normal line of the mounting surface faces forward and diagonally upward.

4. The vehicular headlamp according to claim 1 , wherein
the first reflecting surface, the second reflecting surface and the third reflecting surface are formed on a surface of a single component.

5. The vehicular headlamp according to claim 1 , wherein
the first light is light for forming a low beam pattern in front of a vehicle,
the second light is light for forming a high beam pattern in front of the vehicle, and
the edge portion has a cutoff formation portion for forming a cutoff line in the low beam pattern.

Assignees

• Ichikoh Industries Ltd

Inventors

• Ohashi Yuji
• Imamura Hiroya
• Nozue Hirokazu
• Suzuki Eiji

Classifications

• B60Q1/04

  the devices being headlights · CPC title

• F21W2102/155

  having inclined and horizontal cutoff lines · CPC title

• F21W2102/18

  for overhead signs · CPC title

• F21S41/663

  by switching light sources (by switching incandescent light sources F21S41/162) · CPC title

• F21S41/255

  Lenses with a front view of circular or truncated circular outline · CPC title