Card – picture – or sign exhibiting – Changing exhibitor – Motor operated
Patent
1995-09-22
1997-06-17
Silbermann, Joanne
Card, picture, or sign exhibiting
Changing exhibitor
Motor operated
G09F 1118
Patent
active
056386257
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to an information board with many adjacent displays that are independently changeable by winding up a new information symbol to replace a former display.
BACKGROUND OF THE INVENTION
Previously information boards are known, which are furnished for instance with FIGS. 0-9 on a rotatable drum, whereby the wanted figure can be rolled up on the display. There are several adjoining displays to show prices of commodities, results of athletic contests or letters for words. Motors or stepping motors have been used to rotate the drums in order to roll them one symbol at a time.
Drums of this kind are space-taking, since a drum containing the FIGS. 0-9 must be ten-cornered if the displays are levels.
SUMMARY OF THE INVENTION
With the information board as per this invention the former disadvantages are solved and the invention is characterized in what is presented in the patent claims.
The most significant advantage of the invention can be considered the fact that the board outer measures can be made very close to the measures required by the displays, the thinness of board and simple actuators, by means of which changing of displays can be arranged with a small number of components. The construction of board and displays allows the lighting fixtures to be fitted inside the board, whereby they illuminate the displays from behind without producing any shadow areas on the displays. The display band is translucent securing the visibility of symbols on the band.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following the invention is described in detail with reference to the enclosed drawing, where
FIG. 1 is a diagonal view of a partially sectioned information board
FIG. 2 is a partially sectioned wind-up roll
FIG. 3 is a wind-up roll viewed from one end
FIG. 4 is another embodiment for longitudinal motion of axles
FIG. 5 is a cross section of a one-way clutch
FIG. 6 is a side view of an axle with a slot
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows an information board with three displays in a box 1, where the displays 4 are on a rotatable band. In the box there are upper wind up rolls 5 and lower wind-up rolls 5 for each of the three display bands. In the exemplary solution the display bands can be wound-up both ways, to the upper rolls and to the lower rolls. Accordingly, all drums are wind-up rolls. The upper rolls are rotated by a motor 2 and the lower ones by another motor 3. The display bands are made of flexibe heavy-duty material, onto which symbols can be printed. Through both roll systems 12 an axle is taken and these axles are rotated by motors 2 and 3. The axles can move, longitudinally, certain distance and three different restricted positions are arranged for them by means of a mechanism built of rockers 7, arms 8 and a motor 10. A crank arm rotated by a motor 10 produces a to-and-fro motion to arms 8. By means of restrictors the motor 10 is stopped in three different positions, whereby axles 12 can be moved, similarly, to three different positions in their lengthwise direction by motor 10. Winding-up the display bands both ways is arranged by two motors and the transmission mechanism of axles 12 is actuated by a further motor 10. It is possible to add further adjoining displays, then only the number of the motor 10 stopping positions has to be increased in order to match with the number of adjacent displays. The lighting fixtures are placed in the free space in the box behind the display bands, where they freely illuminate the display from behind and a part of the light has exit out over the display bands producing illumination for the displays.
FIG. 2 shows a wind-up roll 5 with a sectional view of its intern. Axle 12 runs inside all the three adjacent wind-up rolls and axles 12 are rotated, upon need, by motors 2 and 3. In the figure the rotation mechanism of wind-up rolls 5 is in position II, whereby the wind-up roll in the figure rotates along with axle 12. In axle 12 there is an oblong hole, in the centre of which a wing 16 is faste
REFERENCES:
patent: 1773490 (1930-08-01), Larsen
patent: 1884595 (1932-10-01), Moxley
patent: 2072058 (1937-02-01), Rauen
patent: 3685621 (1972-08-01), Gulick et al.
patent: 3854561 (1974-12-01), Conde
patent: 4741118 (1988-05-01), Aiken et al.
patent: 5265707 (1993-11-01), Abe et al.
Ilkka Petri
Piipponen Matti
Baron Tech OY
Silbermann Joanne
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