초록 ▼

A multi-purpose visual signaling device, particularly for road emergency warning and in low visibility conditions, includes light-emitting means for generating a light beam and means for supplying power to the light-emitting means. The light-emitting means include at least one laser projector adapte

A multi-purpose visual signaling device, particularly for road emergency warning and in low visibility conditions, includes light-emitting means for generating a light beam and means for supplying power to the light-emitting means. The light-emitting means include at least one laser projector adapted to project images over a substantially flat surface for such images to be visible from a relatively long distance. The light-emitting means and the power supply means are mounted onto a stationary support structure, which may include a front warning triangle-defining portion. The laser projector comprises at least one laser diode and optical and/or electronic means for generating images in space or over a substantially flat surface. The optical and/or electronic means comprise a diffractive lens. Images include monochromatic, polychromatic and/or holographic images, possibly of variable configuration, and preferably form a triangular design.

대표청구항 ▼

What is claimed is: 1. A multi-purpose signaling device for road emergency warning in low visibility conditions, the device comprising: a support structure having a base and a rear portion, the support structure being configured to be positioned on a ground, secured to a car or to a stationary stru

What is claimed is: 1. A multi-purpose signaling device for road emergency warning in low visibility conditions, the device comprising: a support structure having a base and a rear portion, the support structure being configured to be positioned on a ground, secured to a car or to a stationary structure, or to be held by a user; light emitting means for generating a light beam; power supply means for supplying said light-emitting means, said light emitting means and said power supply means being both mounted onto said support structure; wherein said light emitting means include a laser projector comprising one or more of optical or electronic means for projecting one or more images in an open space or over a substantially flat surface, wherein said laser projector is configured to be oriented toward the ground and to project said one or more images thereon at a predetermined distance from said base, and wherein said one or more images comprise a visible warning signal image. 2. The device as claimed in claim 1, wherein said laser projector comprises at least one laser diode. 3. The device as claimed in claim 2, wherein said one or more of optical or electronic means comprise an electronic card interposed between said power supply means and said at least one laser diode. 4. The device as claimed in claim 1, wherein said one or more of optical or electronic means are selected from the group consisting of lenses, prisms, mirrors, LCD electron mirrors, and micromirrors. 5. The device as claimed in claim 1, wherein said one or more of optical or electronic means comprise at least one diffractive lens. 6. The device as claimed in claim 5, wherein said diffractive lens is spaced from said laser diode by a distance of 10 mm to 100 mm. 7. The device as claimed in claim 1, wherein said one or more images include one or more of monochromatic, polychromatic or holographic images. 8. The device as claimed in claim 1, wherein said warning signal image comprises a triangular design. 9. The device as claimed in claim 1, wherein said one or more images comprise alphanumeric characters. 10. The device as claimed in claim 1, wherein said support structure includes a base having a multilateral housing, said housing having a substantially U-shaped cross-section configured to receive said power supply means and said laser projector. 11. The device as claimed in claim 10, wherein said support structure has a front portion that defines a warning triangle to be attached to said base. 12. The device as claimed in claim 1, wherein said laser projector is secured to said support structure by adjustable tilting means, causing a projection of said one or more images parallel to a roadway at a predetermined distance therefrom, so to prevent the light beam from directly encroaching eyesights of drivers of oncoming vehicles. 13. The device as claimed in claim 12, wherein said predetermined distance is 10 m to 250 m. 14. The device as claimed in claim 12, wherein said adjustable tilting means include an articulated joint selectively lockable in a plurality of angular positions. 15. The device as claimed in claim 1, wherein said power supply means comprise at least one battery connected to said laser projector with electrical leads. 16. The device of claim 1, wherein said one or more of optical or electronic means project said one or more images of a variable configuration.