JPS646869Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a line display device for a competition court that is drawn on the floor of a gymnasium or the like.

Competition lines are drawn in advance on the floors of gymnasiums and indoor stadiums. However, since gymnasiums and the like are used for a variety of sports, their floors usually have lines for several types of competitions drawn on them. However, in the past, the colors of the lines were different for each competition to avoid line confusion, but this was very confusing for the players and spectators, and could sometimes lead to misplays. There is a drawback.

In view of these drawbacks, the present invention aims to provide a line display device that clearly displays the lines of only the competition in use and prevents line confusion.

The feature of the competition court line display device of the present invention is that several lines are drawn on the court surface with different luminescent paints for each sport, and from above, a wavelength that matches the luminescent paint of the line to be used is drawn. By irradiating a beam of light, only the line to be used emits light and floats on the court surface, so that if the type of competition changes, it can be easily changed by simply changing the wavelength of the irradiated beam. It is in.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the drawings of the line display device of the present invention will be described below. 1 is a court surface such as a gymnasium,
2 is a line drawn on the court surface. This line 2 is drawn as a separate line for each type of competition. For example, as shown in the figure, line 2a is for basketball, line 2b is for tennis, etc.
Furthermore, line 2 is drawn using luminescent paint. Luminescent paints are paints that emit light when irradiated with light of a specific wavelength, such as fluorescent paints and phosphorescent paints. Moreover, each line 2a, 2b, . . . is drawn separately using a different type of luminescent paint, that is, a paint that emits light with different wavelengths. 3 is a light source, which is installed on the ceiling of the gymnasium or the like. The light source 3 is one that can emit light of a wavelength that matches the emission wavelength of the luminescent paint used for the lines 2a, 2b, . . . Further, as the light source 3, a wavelength switchable one may be used alone, or a plurality of lamps for a specific wavelength may be attached in accordance with the number of lines.

The type of light to be used is free, including visible light,
Ultraviolet rays, infrared rays, radiation, etc. can be used.
A light beam having a wavelength that responds well to the luminescent paint used is appropriately selected and used. However, when choosing a beam, choose one that will not harm the health of athletes and others.

Various types of luminescent paints have already been developed, and any of them can be used in the present invention. A line that does not react to the wavelength of general illumination light for illuminating the venue, but reacts only to light of a specific wavelength, and emits light in a color suitable for the line, is appropriately selected and used. Preferably, a color that is the same as the ground color of the coat when not emitting light, and a color that stands out against the ground color of the coat when emitting light is preferably used. Among the luminescent paints currently on the market, the main components, reaction wavelengths, and luminescent colors of those suitable for use in the present invention in terms of performance, price, etc. are shown below.

A Phosphorescent paint Ultraviolet light is used as the irradiation light.

Γ Name of a substance that reacts when the wavelength of ultraviolet light is around 250 mm: (green) Γ Fluorenesulfonic acid Name of a substance that reacts when the wavelength of ultraviolet light is around 350 mm: (yellow) α-naphthoflavone (orange-yellow) 8-amino-1-naphthol −
3,6 disulfonic acid (yellow green) 2-naphthylamine-6 sulfonic acid B Fluorescent paint A sodium lamp or mercury lamp is used as the irradiation light source.

There are many substances on the market that react to light with a wavelength of 400 to 600 mm and change color to red or yellow-green, so select one as appropriate and use it.

C Paint that reacts with electromagnetic waves Paint-based substances that emit light when excited by electromagnetic waves of a specific wavelength have been developed, so this paint can be used in combination with electromagnetic waves of a specific wavelength.

Note that each of the above-mentioned luminescent substances is used as a paint by blending it with an amino resin or the like. Further, extender pigments and the like are appropriately added as necessary. Furthermore, when irradiating the light beam, a shadowless illumination method, a multi-source illumination method, etc. can be used so as not to be affected by the shadows of the competitors.

As described above, the line display device of the present invention lights only the line to be used out of the several types of lines drawn on the court surface, and makes only that line stand out on the court surface, so that players can see the line. This can prevent confusion. In addition, since this invention only uses luminescent paint when painting the line, it is easy to install just like conventional lines and does not interfere with the competition at all, and the required wavelength of light can be applied to ceilings etc. Since the display is performed using a provided light source, line display can be performed reliably. Furthermore, when the type of competition changes, only the lines of that competition can be highlighted by simply changing the wavelength of the irradiated light beam, which is very convenient when the type of competition changes frequently.

[Brief explanation of the drawing]

The drawings show an embodiment of the line display device of the present invention; FIG. 1 is a plan view of lines drawn on a court surface, and FIG. 2 is an enlarged sectional view showing the operating state. 1...Court surface, 2...Line, 3...Light source.

Claims (1)

[Claims for Utility Model Registration] 1. Consisting of a line drawn with luminescent paint on the court surface and a light source installed above to illuminate the line, multiple types of lines may be drawn on the same court surface for each competition. Moreover, each competition line is painted with paint that emits light of a different wavelength, and the light source is designed to selectively emit light of multiple wavelengths that correspond to the luminescent paint used for the line. A line display device on a modern competition court. 2. The line display device for a competition court according to claim 1, which uses fluorescent paint as the luminescent paint. 3. The line display device for a competition court according to claim 1, which uses phosphorescent paint as the luminescent paint.