Vehicle headlight
AssigneeIchikoh Industries, Ltd.
InventorEiji Suzuki
Life of this patent
Estimating the term…
Abstract
A vehicle leadlight includes a light source, a reflector, a projector lens, and a shade member. The shade member includes a first plate member and a second plate member. The first plate member has an edge that is shaped to increase amounts of light around cut-off lines of a light distribution pattern. The second plate member is bent to have the substantially similar shape to a meridional image surface of the projector lens. The second plate member has an edge that is shaped to create the cut-off lines of the light distribution pattern.
Claims4
A projector-type vehicle headlight comprising:
- a light source that emits light;
- a reflector that reflects the light emitted by the light source;
- a projector lens that projects forward the light reflected by the reflector;
- and
- a shade member that blocks a portion of the light reflected by the reflector so that the light does not reach to the projector lens thereby creating a light distribution pattern that includes cut-off lines, wherein
- the shade member includes at least a first plate member and a second plate member, the first plate member being located relatively nearer to the reflector and the second plate member being located relatively nearer to the projector lens,
- the first plate member has an edge that increases amounts of light around the cut-off lines of the light distribution pattern,
- the second plate member is bent to have an approximately similar shape to a meridional image surface of the projector lens, and has an edge that creates the cut-off lines of the light distribution pattern,
- the light distribution pattern is a light distribution pattern for oncoming vehicles that includes an oblique cut-off line, an upper-horizontal cut-off line, and a lower-horizontal cut-off line, the oblique cut-off line being located between the upper-horizontal cut-off line and the lower-horizontal cut-off line, the upper-horizontal cut-off line and the lower-horizontal cut-off line being located on either side of the oblique cut-off line,
- the first plate member has an edge on a top surface of the first plate member,
- the edge of the first plate member includes an oblique partial edge, a lower-horizontal partial edge, an upper-horizontal partial edge, a first oblique partial edge, and a second oblique partial edge, the oblique partial edge creating the oblique cut-off line of the light distribution pattern for oncoming vehicles, the lower-horizontal partial edge creating the upper-horizontal cut-off line of the light distribution pattern for oncoming vehicles, the upper-horizontal partial edge creating the lower-horizontal cut-off line of the light distribution pattern for oncoming vehicles, the first oblique partial edge being located obliquely downward from a side of the lower-horizontal partial edge thereby increasing an amount of light around the upper-horizontal cut-off line, the second oblique partial edge being located obliquely downward from a side of the upper-horizontal partial edge thereby increasing an amount of light around the lower-horizontal cut-off line,
- the second plate member includes a center plate member, a first side plate member, and a second side plate member, the first side plate member and the second side plate member being bent from the center plate member toward the projector lens,
- the second plate member has an edge on a top surface of the second plate member thereby creating the oblique cut-off line, the upper-horizontal cut-off line, and the lower-horizontal cut-off line of the light distribution pattern for oncoming vehicles, and
- the edge of the second plate member includes an oblique partial edge, a lower-horizontal partial edge, and an upper-horizontal partial edge, a shape of the oblique partial edge being identical or substantially identical to that of the oblique partial edge of the first plate member and creating the oblique cut-off line of the light distribution pattern for oncoming vehicles, a shape of the lower-horizontal partial edge being identical or substantially identical to that of the lower-horizontal partial edge of the first plate member and creating the upper-horizontal cut-off line of the light distribution pattern for oncoming vehicles, a shape of the upper-horizontal partial edge being identical or substantially identical to that of the upper-horizontal partial edge of the first plate member and creating the lower-horizontal cut-off line of the light distribution pattern for oncoming vehicles.
A projector-type vehicle headlight comprising:
- a light source that emits light;
- a reflector that reflects the light emitted by the light source;
- a projector lens that projects forward the light reflected by the reflector;
- and
- a shade member that blocks a portion of the light reflected by the reflector so that the light does not reach to the projector lens thereby creating a light distribution pattern that includes cut-off lines, wherein
- the shade member includes at least a first plate member and a second plate member, the first plate member being located relatively nearer to the reflector and the second plate member being located relatively nearer to the projector lens,
- the first plate member has an edge that increases amounts of light around the cut-off lines of the light distribution pattern,
- the second plate member is bent to have an approximately similar shape to a meridional image surface of the projector lens, and has an edge that creates the cut-off lines of the light distribution pattern,
- the shade member includes the first plate member, the second plate member, and a third plate member,
- the third plate member is secured between the first plate member and the second plate member with keeping a distance from the first plate member and the second plate member respectively,
- the first plate member and the second plate member are integrated into a rotatable combined plate member, and
- the combined plate member includes a switching unit that switches between the light distribution pattern for oncoming vehicles that includes the oblique cut-off line, the upper-horizontal cut-off line, the lower-horizontal cut-off line and a second light distribution pattern that is obtained by using the third plate member by changing a position of the combined plate member.
Dependencies are inferred from the claim text.