JPS6318041Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a mobile display device, and in particular, a display board having display marks is fixed to a film strip, and the display mark is displayed at a predetermined position by moving and positioning the film strip. The present invention relates to a mobile display device.

2. Description of the Related Art Mobile display devices that include a plurality of built-in display boards having guide texts, operation guidance texts, etc., and select and display a predetermined display board are employed in various devices. For example, belt-type or reversible display devices are used to display information such as destinations and train types in station premises, and to display destinations on buses and trains.In addition, cash dispensers installed in banks provide customers with cash and other information. A mobile display is mounted to provide instructions for operation of the dispenser.

However, in such conventional mobile display devices, the light emission throughout the display section is uneven and difficult to see.
In addition, since the display board selection direction is unidirectional, it takes a long time to select and display the desired display board.Furthermore, it cannot be applied to a display mark that moves back and forth, such as the dial display of a tuner, and furthermore, the distance between vehicles is limited. There was no function for detecting a physical quantity such as distance, displaying a desired display mark at a predetermined position based on the detected value, and displaying the physical quantity on a monitor.

Therefore, the present invention provides a new mobile display device in which the light emitted from the entire display section is uniform and easy to see, the display board can be selected in both forward and reverse directions, and furthermore, physical quantities such as the distance between vehicles can be displayed on a monitor. The purpose is to

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a front view of a mobile display device according to the present invention, FIG. 2 is a plan view of the same with a portion of the strip film cut away, FIG. 3 is a side view of the same with a portion of the light guide cut away, FIG. 4 is an exploded perspective view of the same, and FIG. 5 is a cross-sectional view of the same.

In the figure, reference numeral 1 designates a movably supported endless belt-shaped film made of a flexible material, with a display board (to be described later) fixed to one long side 1a, and the other long side 1b. A position detection code 1c made of a binary code is formed. Reference numeral 2 denotes a display board formed of a transparent member, and an arrow-shaped display mark 2a is formed on the surface of the display board.
A plurality of notch grooves 2b, 2b', 2b'' (Fig. 5) are formed on the bottom opposite to a so that the notch cross section becomes a right-angled isosceles triangle and the peak becomes gradually lower.
is formed. Therefore, the light incident from both sides is totally reflected on the sloped surfaces of the cutout grooves 2b to 2b'' and output upward.By providing a plurality of cutout grooves in this way, even if the display board 2 is thin, the light can be reflected upwardly. It is possible to increase the light passage area on the surface of the display board.In addition, it is not necessary to provide a plurality of notched grooves, but only one notched groove 1b is provided so that the apex angle of the notched cross section is an obtuse angle. The notched groove surface may be coated with a vapor-deposited aluminum film or the like so that light is reflected upward.
Alternatively, as shown in FIG. 6, a large number of small grooves may be provided on the surface of the notched groove 1b to diffusely reflect light. 3, 3', 3'', 3 are lamps, 4,
4' is a light guide made of plastic etc.
Lamp accommodation holes 4a, 4 that accommodate the lamps 3-3
b, 4a', 4b'. The light guides 4 and 4' are provided with display plates 2 on both sides of the strip film 1.
The lamps 3 and 3 function to guide the light generated from the lamps 3 to 3 to the light reflecting surface of the display board 2. Reference numeral 5 denotes a position detection sensor having a U-shaped cross section, which is provided with a light emitting element 5a and a light receiving element 5b, and is disposed to sandwich the film strip 1, and detects a position detection code 1c formed on the film strip 1. In addition, since the position detection code 1c is composed of a binary code, the position detection sensor 5 has 2 ⁰ digits, 2 ¹ digits, and 2 ^{2 digits} .
Digit...2 ⁿ to detect the nth digit "1", "0"
It has a light emitting element 5a and a light receiving element 5b facing each other. Reference numeral 6 denotes a motor for driving the film strip, and a gear 6b is mounted on a motor shaft 6a. 7, 7', 7'', and 7 are pulleys each driven by a strip film, and the pulley 7 is equipped with a gear 7a.
is formed. The gear 7a meshes with the gear 6b and rotates in accordance with the rotation of the motor 6, moving the film strip 1 in both forward and reverse directions according to the rotational direction of the motor. Incidentally, reference numeral 8 (FIG. 5) is an adhesive for fixing the display panel 2 to the strip-shaped film 1.

Next, the operation of the mobile display device according to the present invention will be explained.

FIG. 7 is an electrical system block diagram of the positioning control circuit for the film strip 1 in the mobile display device according to the present invention, and FIG. 8 is an explanatory diagram illustrating the positioning of the film strip 1.

In FIG. 7, reference numeral 11 denotes a position command generation section, which generates a BCD code corresponding to the position when it is desired to display the arrow-shaped display mark 2a at a predetermined position.
A position detection sensor 5 corresponds to the position detection sensor 5 shown in FIGS. 1 to 5, and generates a BCD code corresponding to the current position of the film strip 1. 12
is a comparison circuit that outputs the BCD code according to the position command,
It compares the current position of the film strip 1 with the BCD code and generates a voltage according to the positional deviation.
13 is a known servo circuit that drives the motor 6 (corresponding to the motor 6 in FIGS. 1 to 5) so that the positional deviation becomes zero.

Assume now that the arrow-shaped display mark 2a exists at position B as shown in FIG. 8a. At this time, the position detection sensor 5 is generating a BCD code of 00011. In this state, the position command BCD code 00001 is sent to the position command generation unit 11 so that the arrow-shaped display mark 2a is moved to position C and displayed.
If a position error occurs, the comparator circuit 12 compares both codes indicating the position command and the current position, and generates a voltage according to the position deviation. As a result, the motor 6 rotates counterclockwise, causing the pulleys 7 to 7 to rotate in the normal direction, thereby causing the endless film strip 1 to rotate in the normal direction. Therefore,
The upper long side 1a of the strip film 1 is directed to the right,
The lower long sides 1b each move to the left, and when the detection output of the position detection sensor 5 reaches 00001,
When a match is established, the rotation of the motor 6 is stopped, and the arrow-shaped display mark 2a is positioned at position C (FIG. 8b).

Further, if position command 00101 is generated from position command generating section 11 to move and display arrow-shaped display mark 2a to position A in the state shown in FIG. 8b,
The comparison circuit 12 compares the position command and the current position and outputs a voltage according to the position deviation. As a result, the motor 6 rotates clockwise, causing the pulleys 7 to 7'' to rotate in the reverse direction, and stops when the detection output of the position detection sensor 5 reaches 00101.As a result, the arrow-shaped display mark 2
a is positioned at position A (FIG. 8c).

Now, once the display board 2 is positioned at a predetermined position, the light from the lamps 3 to 3 passes through the light guides 4, 4' and the light-transmitting part of the display board 2, and passes through the notched grooves 2b formed in the display board 2. ~2b'' (FIG. 5), where it is totally reflected, changes direction by 90 degrees, and is output upward through the display mark 2a, where the display mark 2a is observed.

Therefore, for example, the position command generation section 11 (seventh
(Figure) consists of an inter-vehicle distance sensor and an AD converter that converts the output of the inter-vehicle distance sensor into a BCD code of position command.
(Figure) can be used as an in-vehicle safety driving monitor if the position is set to ``Safe'', ``Caution'', or ``Danger''.
That is, by converting the output of the inter-vehicle distance sensor into a BCD code using an AD converter and inputting the BCD code as a position command to the comparison circuit 12 (Fig. 7), the output code of the position detection sensor 5 will match the position command. The belt-like film 1 moves until the distance between the vehicles is reached, thereby making it possible to monitor safe driving according to the distance between vehicles.

Further, the present invention can also be applied to a dial display in an electronically tuned tuner. In other words, the preset voltage of the variable inductance element in the tuner is
An AD converter for AD conversion is provided in the position command generating section 11, and the preset voltage corresponding to the operated channel selection button is digitally converted into a BCD code by the AD converter and inputted to the comparator circuit 12 as a position command. As a result, the motor 6 rotates until the difference between the detection code generated from the position detection sensor 5 and the position command code becomes zero, and the display board 2 is rotated to the right or left under the transparent dial board with the frequency scale. direction and position it at a predetermined frequency scale position.

FIG. 9 is an explanatory diagram of another embodiment of the mobile display device according to the present invention, and the same parts as in FIGS. 1 to 5 are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

In the figure, 111, 111', 111'' are movably supported endless strip films, 112, 112', 112'' are display boards, and display marks 112a, 112'a, 11
It has 2″a.118, 118′, 118″
is an adhesive for fixing the display plates 112, 112', 112'' to the film strips 111, 111', 111''. The configurations of the film strips 111 to 111'' and the display plates 112 to 112'' are the same as those of the film strip 1 and the display plate 2 shown in FIGS. 1 to 5. However, the width of the display board 112 is the width of the strip film 1.
Film strips 111' and 111'' are movably disposed under a display plate 112 that protrudes from the film strip 111 on both sides. Light body 4, 4'
is commonly arranged on each display board 112 to 112'',
Light from the lamps 3 to 3 is guided to each display board. Therefore, this movable display device can display three display marks at the same time, and each strip film 111, 111', 11
By independently controlling the position of 1'', it is possible to monitor and display a plurality of pieces of information, and furthermore, the lamp and light guide can be shared, which simplifies the configuration.

As described above, according to the present invention, the light from the lamp is guided through the light guide to the reflective surface at the bottom of the display board, and the reflected light is made to uniformly pass through only the display mark area, making it easier to see letters, marks, etc. I can do it.
Furthermore, since the display plate can be moved in both forward and reverse directions, the positioning time is short, and it can also be applied to a dial display that moves back and forth in a straight line under a frequency scale plate, such as in a tuner.

Furthermore, physical quantities such as the distance between vehicles are detected, and display marks are moved according to the physical quantity to indicate safety, caution, and
Danger, etc. can be displayed on the monitor.

Furthermore, by providing a plurality of strip-shaped films with display plates, it is possible to monitor a plurality of pieces of information at the same time, and in this case, the light guide and the lamp can be shared, which simplifies the configuration.

[Brief explanation of the drawing]

Fig. 1 is a front view of the mobile display device according to the present invention, Fig. 2 is a partially cutaway plan view of the strip film, Fig. 3 is a partially cutaway side view of the light guide, and Fig. 4 5 is an exploded perspective view, FIG. 5 is a sectional view, FIG. 6 is an explanatory diagram of another embodiment of the display board, and FIG. 7 is an electrical diagram of the positioning control circuit for the film strip 1 in the mobile display device according to the present invention. System block diagram, Figure 8 is an explanatory diagram for explaining the positioning of the strip film, Figure 9 is
The figure is an explanatory diagram of another embodiment of the mobile display device according to the present invention. 1,111~111″...Strip film, 1c
...Position detection code, 2,112~112''...
Display plate, 2a, 112a~112''a... Display mark, 2b, 2b', 2b''... Notch groove, 3~3...
... Lamp, 4, 4' ... Light guide, 5 ... Position detection sensor, 6 ... Motor, 7, 7' to 7 ... Pulley, 11 ... Position command generation section, 12 ... Comparison circuit, 13 ...Servo circuit.

Claims (1)

[Claims for Utility Model Registration] (1) An endless strip-shaped film that is movably supported and has a position detection code attached to its surface, and a position detection sensor that detects the position detection code attached to the strip film. a display board fixed to the strip film and having a display mark; a light source such as a lamp; a light guide that guides light from the light source to the display board; and a position command signal detected by the position detection sensor. 1. A mobile display device comprising: a servo device for driving the film strip so that the detection signal coincides with the detection signal, and the film strip is positioned to display a predetermined display mark. (2) The endless strip-shaped film is made into a substantially rectangular shape, the display board is fixed to the surface of one long side, a position detection code is attached to the surface of the other long side, and the display board is faced on both sides. The mobile display device according to claim (1) of the utility model registration, characterized in that the light guide is arranged as follows. (3) The display board is formed of a light-transmitting member, and a display mark is attached to the surface, and the bottom of the display board facing the display mark is cut out to have a triangular cross section;
The mobile display device according to claim (2) of the utility model registration, characterized in that the light guided by the light guide is deflected by the notch. (4) The mobile display device according to claim (3) of the utility model registration, characterized in that a plurality of notches having a triangular cross-section whose peaks gradually decrease are provided at the bottom of the display board. (5) The mobile display device according to claim (3) of the utility model registration, characterized in that a light-scattering reflective surface is formed in the notch. (6) The width of the display board is made larger than the width of the film strip, and a display board having another display mark is fixed to a movable separate film strip under the display board protruding from the film strip. The utility model registration claim No. 1 is characterized in that the light from the light source is guided to each display board via the light guide to display a plurality of display marks.
The mobile display device described in paragraph (2).