초록 ▼

The invention relates to a device and a method for supplying information to pilots, especially in poor visibility, about, for instance, the borders of a runway (1). Along the long sides of the runway and at its beginning and end, signal means (2, 5) are arranged, which are translucent to e.g. UV rad

The invention relates to a device and a method for supplying information to pilots, especially in poor visibility, about, for instance, the borders of a runway (1). Along the long sides of the runway and at its beginning and end, signal means (2, 5) are arranged, which are translucent to e.g. UV radiation and which comprise a fluorescent material which converts the radiation penetrated by illumination into visible light. In the daytime, the UV radiation originates from sunlight. The converted light will then reinforce the usual light from the signal means, which originates from the sun's illumination thereof with visible light. As a result, It will be much easier to observe the signal means especially against the light. It is further suggested according to the invention that at night the signal means are illuminated by UV searchlights (34, 35). By a great number of signal means being illuminated simultaneously by a small number of searchlights, a great amount of electric equipment and installation work can be avoided. It is suggested that the signal means be made as flat screens in the form of square or rectangular pieces of plastic sheeting expanded between poles.

대표청구항 ▼

1. A signalling device for placed adjacent to a runway comprising:an essentially permanent sheet-shaped structure with two opposite boundary surfaces fixed in an orientation relative to the runway, a light device fixed in orientation relative to the runway for providing for providing a source of rad

1. A signalling device for placed adjacent to a runway comprising:an essentially permanent sheet-shaped structure with two opposite boundary surfaces fixed in an orientation relative to the runway, a light device fixed in orientation relative to the runway for providing for providing a source of radiation, said sheet-shaped structure including material of color pigment adapted to reflect light in a visible area and a wavelength-converting material of another pigment adapted to emit, when provided with activating radiation a visible light of approximately the same color as said reflected light from the color pigment, said signalling device arranged in such a manner that if at least some parts of an arbitrarily selected boundary surface are illuminated by said activating radiation, corresponding parts of the other boundary surface will emit the visible light emitted by the wavelength-converting.