Moving virtual display apparatus

Card – picture – or sign exhibiting – Changing exhibitor – Alphanumeric device

Reexamination Certificate

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Details

C345S031000

Reexamination Certificate

active

06249998

ABSTRACT:

This invention relates to a display apparatus that is small in size, inexpensive, and moreover provides a display large in area and high in conspicuousness.
BACKGROUND OF THE INVENTION
Conventional display apparatus, such as a neon sign tower, have drawbacks such as: (1) requiring a larger area than the characters and figures to be displayed, (2) difficulties in carrying and transporting the apparatus, (3) high lighting expense such as for electricity and (4) high cost of the apparatus.
Furthermore, signals and barriers used for construction and police work only perform a lighting function and cannot produce characters and figures in two-dimensional space.
As the size of an image display becomes larger, the size and weight of the signal apparatus increases, which means an increase in manufacturing cost and maintenance expense.
SUMMARY OF THE INVENTION
Applicant's invention provides a two-dimensional display that provides a virtual image of characters and figures produced by moving a body equipped with luminous devices and controlling the flashing position and time of each luminous device while the body moves.


REFERENCES:
patent: 4470044 (1984-09-01), Bell
patent: 5057827 (1991-10-01), Nobile et al.
patent: 5202675 (1993-04-01), Tokimoto et al.
patent: 546844 (1993-06-01), None
patent: 2061693 (1990-03-01), None
patent: 336589 (1991-02-01), None
patent: 6242732 (1994-09-01), None

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