Vehicle lighting

Abstract

To provide a vehicular lighting tool capable of mounting, on the same substrate, light sources of a plurality of optical systems (rear lens parts and light sources) arranged behind a front lens body extending in a predetermined direction along the predetermined direction.SOLUTION: A vehicular lighting tool 30 includes a front lens body FL extending in a predetermined direction, and a plurality of optical systems 20A-20E arranged behind the front lens body along the predetermined direction, the plurality of optical systems each including a rear lens part BL (BL1-BL5), and a light source A (A1-A5), the rear lens part being a lens part for focusing light from the light source permeating the rear lens part mainly in a first direction, the front lens body being a lens part for focusing light from the rear lens part permeating the front lens body mainly in a second direction intersecting with the first direction, and the light sources of the plurality of optical systems mounted on a same substrate 40.SELECTED DRAWING: Figure 3

Claims

1. A forward lens body extending in a predetermined direction, The system comprises a plurality of optical systems arranged in the predetermined direction behind the front lens body, Each of the aforementioned plurality of optical systems comprises a rear lens section and a light source positioned behind the rear lens section, which emits light that passes through the rear lens section and the front lens body in that order and illuminates forward to form a predetermined light distribution pattern. The rear lens portion is a lens portion that primarily focuses the light from the light source that passes through the rear lens portion in a first direction. The front lens body is a lens portion that focuses light from the rear lens portion that passes through the front lens body mainly in a second direction that intersects the first direction. Each of the aforementioned optical systems has a light source mounted on the same substrate. The plurality of optical systems include at least a first optical system and a second optical system, The first optical system comprises a first rear lens section and a first light source positioned behind the first rear lens section, which emits light that passes through the first rear lens section and the front lens body in that order and illuminates forward to form a first light distribution pattern. The second optical system comprises a second rear lens section and a second light source positioned behind the second rear lens section, which emits light that passes through the second rear lens section and the front lens body in that order and illuminates forward to form a second light distribution pattern. The optical axis of the first lens, formed by combining the front lens body and the first rear lens portion, and the optical axis of the second lens, formed by combining the front lens body and the second rear lens portion, are parallel to each other. The light-receiving portion of the first rear lens section and the light-receiving portion of the second rear lens section are arranged in a line along a direction perpendicular to the optical axis of the lens. The aforementioned substrate is a flat-shaped substrate, The first light source and the second light source are mounted on the substrate in a row arranged along a direction perpendicular to the optical axis of the lens. The distance between the focal point of the first lens and the first light source and the distance between the focal point of the second lens and the second light source are different from each other. The focal points of the first lens and the second lens are arranged along the predetermined direction. A vehicle lighting device in which the distance between the focal point of the first lens and the front lens body and the distance between the focal point of the second lens and the front lens body are the same.

2. The vehicle light fixture according to claim 1, wherein the predetermined direction is a straight line direction or a curved direction.

3. The first rear lens portion includes a first light-receiving portion into which light from the first light source enters, a first light-emitting portion into which light that has entered from the first light-receiving portion exits, a first edge portion located near the focal point of the first lens, and a first reflective surface extending from the first edge portion toward the first light-receiving portion. The vehicle lamp according to claim 1 or 2, wherein the second rear lens portion includes a second light-receiving portion into which light from the second light source enters, a second light-emitting portion into which light from the second light-receiving portion exits, a second edge portion positioned near the focal point of the second lens, and a second reflective surface extending from the second edge portion toward the second light-receiving portion.

4. The light-receiving portion of the first rear lens includes a first central light-receiving surface that is convex toward the first light source, a first peripheral light-receiving surface that extends toward the first light source side from the outer peripheral edge of the first central light-receiving surface, and a first peripheral reflective surface disposed outside the first peripheral light-receiving surface. The vehicle lamp according to claim 3, wherein the light-receiving portion of the second rear lens portion includes a second central light-receiving surface convex toward the second light source, a second peripheral light-receiving surface extending toward the second light source from the outer peripheral edge of the second central light-receiving surface, and a second peripheral reflective surface disposed outside the second peripheral light-receiving surface.

5. The vehicle lamp according to claim 4, wherein the first peripheral reflective surface and the second peripheral reflective surface are adjusted so that the first light distribution pattern and the second light distribution pattern are identical to each other.

6. The first edge portion and the second edge portion each include a projection, The vehicle light fixture according to any one of claims 3 to 5, wherein the depth of the projection of the first edge portion and the depth of the projection of the second edge portion are different from each other.

7. The vehicle lighting device according to any one of claims 1 to 4, wherein at least one of the rear lens portions of the plurality of optical systems is a rear lens portion for high beams or a rear lens portion for ADB.

8. The vehicle lamp according to any one of claims 1 to 7, wherein the plurality of rear lens portions constitute a rear lens body integrally molded by injection molding.

9. Equipped with an additional heatsink, The vehicle lighting device according to claim 8, wherein the substrate is sandwiched between the rear lens body and the heat sink, and the main surface of the substrate opposite to the main surface on which the light source is mounted is fixed facing the heat sink.

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