JPS5841075B2 - Indoor competition court division line selection display device - Google Patents

Description

[Detailed Description of the Invention] The present invention allows an indoor stadium to be used in common for multiple sports.
The present invention relates to a selective display device for court division lines for indoor sports that can selectively display court division lines for each sport.

Since the indoor stadium is shared for different types of competitions, it is not desirable to display the competition court division lines for each event on the same floor, as this will confuse the competition. Even if you change the color of the lines, confusion is still inevitable.

The present invention has been made to improve the current situation, and an object of the present invention is to provide a selective display device for court division lines for indoor sports that can selectively display court division lines according to the competition event.

An actual case of the present invention will be explained below with reference to the drawings.

In the present invention (ζ), the court division line is buried in the floor surface.
Displayed by a color variable display panel.

A two-color variable display panel is a commercially available panel that utilizes an electrophoretic phenomenon, and is used to display characters, codes, and the like.

The principle of the above-mentioned two-color variable display panel (hereinafter referred to as the panel) will be explained with reference to FIG. The transparent electrode 4 is thinner (approximately 100μ
) A sealed chamber is formed, a transparent or translucent thick protective plate 5 is fixed to the upper part, a colored liquid is filled in the sealed chamber, and an electrophoretic pigment whose color is significantly different from the colored liquid is negatively charged. It is electrically charged and dispersed.

When a DC voltage E (a pulse voltage may be applied) is applied between the divided electrode 3 and the transparent electrode 4, when the transparent electrode 4 is a positive electrode, the charged particles 7 are attracted upward (FIG. 1a) and the protective plate 5 appears to be the color of charged particles 7.

On the contrary, when the transparent electrode 4 is a negative electrode, the charged particles T are attracted downward (FIG. 1b), and the protective plate 5 appears to have the color of the colored liquid 6.

That is, by changing the polarity of the applied voltage, variable display of two colors can be performed.

The present invention utilizes such a panel, and as shown in FIG. 2, panel A has a colored liquid 6 of the same color as the floor surface 8 of an indoor stadium and a white electrophoretic pigment 7 representing court division lines.
are buried in a line along the floor along the court division line with the upper surface of the protective plate 5 at the same height as the floor surface 8, and by changing the polarity of the applied voltage, the white court division line can be displayed or the color can be made to be the same color as the floor surface. control so that the court division lines are erased into the color of the floor surface.

Figure 3 shows the control device when two events are held in the same indoor stadium.

For example, let A1 be a panel group representing the court division lines for one competition, A2 be the panel group representing the court division lines for the other competition, and A3 be the panel group of the common part of both court division lines, and control each panel group. A necessary DC voltage or DC pulse voltage is supplied from the DC power supply S through the device R and the electric line.

The control device R controls each panel group AI, A2 . For A3, each has a two-pole polarity changeover switch 81 and 52S3,
When this is switched to the illustrated position, panel groups AI and A3 become white, A2 becomes the same color as the floor, and one competition court division line appears.

Also, if the switch Sl, 82 is switched to the opposite position from that shown, the panel group A1 will be the same color as the floor, A2. A3 becomes white and the other competition court division line appears.

For three or more types of sports, each court division line can be selectively displayed in the same manner as described above.

The present invention has the above-mentioned configuration, and has the effect of being able to selectively display court division lines for multiple events on the same floor surface by remote control with extremely simple control, and is extremely effective in effectively utilizing indoor stadiums.

Particularly in mass games, it is effective to lead the game by switching the guide lines drawn on the floor according to the progress of the game.

The present invention can be applied to the appearance and erasure of various patterns in addition to the division lines of competition courts.

[Brief explanation of the drawing]

1A and 1B are cross-sectional views for explaining the principle of a two-color variable display panel, FIG. 2 is a cross-sectional view of an embodiment of the present invention, and FIG. 3 is a circuit connection diagram. 3...Divided electrode, 4...Transparent electrode, 5
...Protection plate, 6...Colored liquid, 7...
... Electrophoretic pigment particles, 8 ... Floor surface.

Claims (1)

[Claims] 1 A colored liquid of the same color as the floor surface is sealed between an upper transparent electrode with a transparent protection plate attached to the upper side and a lower divided electrode with a small gap, and charged white electrophoretic pigment particles are placed in the colored liquid. A two-color variable display panel that displays the floor color or white color on the protective plate according to the polarity of the voltage applied between the two electrodes is installed on the floor along the division lines of the competition court for multiple events. An indoor competition court division line selection display device which is buried at the same height as the floor surface and selectively displays the competition court division lines of a desired event by switching the polarity of the applied voltage to each two-color display panel.