JP2001075505A - Rotary type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to widen a display range observable from a specific direction of a rotary type display device observable from the entire circumference of 360 deg.. SOLUTION: A rotary display section 3 which rotates exists in a transparent casing 2. This part is provided with three fluorescent display tubes 10 at 120 deg. intervals. The respective tubes have one row of parallel light emitting dots. The respective tubes emit light to respective colors R, G and B. The respective tubes 10 are driven in synchronization with the rotation of the rotary display section. Two mirror finished surface members 20 are disposed by mounting devices 25 near the casing. The display of the portions exclusive of the portions visible from the specific direction among the display screens of the rotary display section 3 is directed toward the specific direction, by which the reflected display is made possible. As a result, the visual recognition range is enlarged when viewed from an observer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary display having a display device capable of performing high-definition graphic display by utilizing the afterimage of a rotating light emitting dot, and a mirror member for reflecting a part of the display. Related to the device.

[0002]

2. Description of the Related Art A rotary display device capable of performing a high-definition graphic display by using an afterimage of a rotating light emitting dot has been developed.
It is disclosed in JP-A-9-305127. Inside a housing having a light-transmitting portion in part, there is a cylindrical rotating body that is rotated by a motor about a vertical rotation axis. The cylindrical rotating body is provided with three fluorescent display tubes at 120 ° intervals. Each fluorescent display tube has a row of light emitting dots parallel to the rotation axis. Each fluorescent display tube has a color filter for each of R, G, and B colors.
Each fluorescent display tube is driven in synchronization with the rotation of the rotating cylinder.
The three fluorescent display tubes are rotated to emit light at the same position.
The light emitting dots of different colors coincide with each other so that the colors are not separated, and an ultra-high-definition color graphic display with a predetermined width in the rotation direction appears on the translucent portion of the housing.

[0003]

In the conventional rotary display device, the display can be viewed from all around 360 degrees. However, when the rotary display device is placed near a wall or the like, the display on the wall side, particularly the display immediately behind the wall, cannot be seen.

[0004] In addition, when placed near a corner of a wall, not only the display directly behind the corner of the wall but also the display on the left and right side faces facing the two walls cannot be seen. Furthermore, even if it has a full-circle display function, if it is desired to emphasize only a display directed to a specific direction, the display will be performed on the front side. The display on the side cannot be used effectively. In such a case, even in the case of a rotary display device that can be observed from all around 360 degrees, the range that can be seen from a specific direction is about 120 degrees, and the remaining display portion cannot be seen.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the display efficiency by expanding the observable display range in a rotary display device that can be observed from all around 360 degrees.

[0006]

According to the first aspect of the present invention, there is provided a rotary display (1) comprising a predetermined number of light emitting dots (17).
Is a light emitting element (fluorescent display tube 10) arranged at a predetermined pitch in a column direction parallel to the rotation axis (9), and a rotary drive for rotating the light emitting element with its light emitting side facing up around the rotation axis. And a rotary display unit (3) having control means for lighting and driving predetermined light emitting dots of the light emitting element in synchronization with driving of the rotary driving means. And then,
It is characterized by having a mirror member (20, concave mirror 31) attached so as to face the rotary display unit so as to reflect a part of the image displayed on the rotary display unit.

According to a second aspect of the present invention, there is provided a rotary display device comprising:
2. The rotary display device according to claim 1, wherein the mirror surface member includes a holding unit (the support base 4) that holds the rotary display unit. 3.
5).

According to a third aspect of the present invention, there is provided a rotary display device comprising:
The rotary display device (1) according to claim 1, wherein the light emitting element is selected from a fluorescent display tube and an LED.

[0009] The rotary display device described in claim 4 is
The rotary display device (1) according to claim 1, wherein two or more of the mirror members (20, the concave mirror 31) are provided.

[0010] The rotary display device described in claim 5 is
The rotary display device (1) according to claim 1, wherein the mirror member is a concave mirror (31).

[0011] The rotary display device described in claim 6 is
2. The rotary display device (1) according to claim 1, wherein an image reflected and observed by the mirror member (20, the concave mirror 31) is inverted and displayed on the rotary display unit (3). Features.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotary display device of this embodiment uses a color filter to irradiate three color dots of R (red), G (green) and B (blue). It has a rotating display unit that rotates a fluorescent display tube around a rotation axis and performs full-color graphic display by an afterimage.

FIG. 1 shows a rotary display device 1 of the present embodiment, the appearance of which is shown in FIG.
Has a cylindrical housing 2. The housing 2 protects an internal rotating display unit 3 described later, and secures safety of an observer or the like from the rotating rotating display unit 3. Case 2 of this example
Is transparent, and the rotation display section 3 inside can be seen from all around.

At the center of the lower surface of the housing 2, a support 5 of a support 4 is provided.
Are connected. The support plate 6 of the support base 4 is provided with wheels 7 so that the rotary display device 1 can be moved.

Although not shown, a motor as a rotation driving means is provided inside the housing 2. This motor is a DC brushless motor and has characteristics of high speed and long life. The drive shaft of the motor faces vertically upward and coincides with the center of the housing 2. As shown in FIG. 2, the drive shaft of the motor is linked to a rotating shaft 9 of a rotating cylinder 8 of the rotating display unit 3 inside the housing 2. The rotating cylinder 8 is a member that rotates inside the housing 2 by driving the motor.

As shown in FIG. 2, three fluorescent display tubes 10 as light emitting elements having the same configuration are provided on the peripheral surface of the rotating cylindrical body 8.
Is attached. The configuration of the fluorescent display tube 10 will be described with reference to FIG. The fluorescent display tube 10 has an elongated box-shaped envelope 11 formed by combining insulating members such as glass. The envelope 11 has an anode substrate 12 and a front substrate 13 facing each other at a predetermined interval, and a side plate 14 provided between the peripheral portions of the substrates 12 and 13. These two substrates 12, 13 and the side plate 14 are sealed with a glass adhesive. The inside of the envelope 11 is maintained in a high vacuum state.

On the elongated rectangular anode substrate 12, anode conductors 15 are formed in a row at a predetermined dot pitch (for example, 0.65 mm in this example). A phosphor layer 16 is attached to each anode conductor 15, and a row of light emitting dots 1
7 are formed. In this example, one line is composed of 120 light emitting dots 17. Inside the envelope 11, a control electrode 18 is provided above the light emitting dots 17, and above the control electrode 18, a filament-shaped cathode 1 serving as an electron source is provided.
9 are arranged.

As shown in FIG. 2, three fluorescent display tubes 10
Are mounted on the peripheral surface of the rotating cylindrical body 8 at intervals of 120 ° about the rotating shaft 9. Each fluorescent display tube 10 is vertically attached to the peripheral surface of the rotary cylinder 8, and the rows of the light-emitting dots 17 are parallel to the rotation axis 9, and each of the light-emitting dots 17 corresponding to the rotation direction A of the rotary cylinder 8. They are arranged so that their positions match.

The phosphor layer 16 of the luminescent dots 17 of the fluorescent display tube 10 is a ZnO: Zn phosphor. The ZnO: Zn phosphor is characterized in that light emission stops with good responsiveness when the current to the anode conductor 15 is cut off, and afterglow is short. Also, Z
The nO: Zn phosphor has a relatively wide wavelength component centered on green. The three fluorescent display tubes 10 of this example have R (red), G (green), and B on the front surface of the front substrate 10 respectively.
Each of the fluorescent display tubes 10 emits light from the luminescent dots 17 as light of a color corresponding to each color filter.

The rotary display unit 3 has control means in the housing 2 and drives the motor and the fluorescent display tubes 10 in synchronization. That is, the rotation of the rotating cylindrical body 8 rotated by the motor is read by a non-contact type rotation sensor (not shown), and given to the control means as a synchronization signal. The control means transfers data to each fluorescent display tube 10 in synchronization with the synchronization signal. As the rotation sensor, any means suitable for the purpose can be adopted regardless of the principle, such as a sensor for detecting the reflection of irradiated light and a sensor for detecting magnetism provided on the rotating side.

A driving signal to be supplied to the fluorescent display tube 10 is provided to control means provided inside the rotary cylinder 8 through a non-contact type signal transmission means such as a photocoupler, and the control means is provided for each fluorescent display tube. 10 is driven. Power is supplied to the motor by a method such as bringing the electrode attached to the rotating shaft 9 into contact with a brush. As a power supply method, a non-contact method using electromagnetic induction of a coil used in a cordless telephone or the like may be applied to a rotating part.

The control means scans the anode conductor 15 of each fluorescent display tube 10 at a frequency corresponding to the number of rotations of the rotating cylinder 8 driven by the motor, and sends a display signal synchronized with the scanning to the control electrode 18. give. A graphic display can be displayed all around the housing 2.

According to the rotary display device 1 of this embodiment described above, three primary color dots are formed by using RGB color filters on three fluorescent display tubes 10 using ZnO: Zn phosphors having short afterglow. Since light was obtained and each row of the luminescent dots 17 of each fluorescent display tube 10 was driven while being aligned in parallel with the rotation axis 9 and rotated under predetermined conditions, the fluorescent display tubes of a small envelope were used. A high-definition full-color graphic display could be performed over the entire circumference of the cylinder. That is, the display area of one large fluorescent display tube is RGB.
Instead of separately forming the light emitting dots, the color filters are applied to three fluorescent display tubes 10 having a single row of light emitting dots 17 of the same size and shape using a phosphor having a short afterglow. These three fluorescent display tubes 10 are rotated to emit light, so that the light-emitting dots 17 of different colors do not completely match and the colors are not separated, and an ultra-high-definition color graphic display is obtained. Is obtained over the entire circumference.

According to the rotary display device 1 of the present embodiment,
Since the anode conductors 15 of the three fluorescent display tubes 10 are commonly connected, the driving circuit provided in the control means can be shared, and the circuit cost is reduced.

As shown in FIG. 4, the light emitting dots 17 of the fluorescent display tube may be arranged in two rows. In this case, each row is parallel to the rotation axis 9 of the rotary cylinder 8, and the positions of the light emitting dots 17 in each row are made to coincide with each other in the rotation direction A. The light emitting dots 17 in each row have separate anode wirings, and are driven for each row. Other configurations are the same as those of the above-described first example.

In the above-described example, full-color display is performed using the R, G, and B color filters on the fluorescent display tube 10 or the like using a ZnO: Zn phosphor. However, since the ZnO: Zn phosphor has a relatively weak red component,
In the above configuration, the red light may be weak depending on the use conditions. Therefore, for the green (G) and blue (B) lights, G and B color filters are used in the fluorescent display tube 10, and for the red light, an LED display composed of a plurality of light emitting dots emitting red light is used. Use the device.
The number and arrangement pitch of each LED of this LED device are adjusted to the fluorescent display tube 10. In this way, it is possible to provide a rotary display device in which the luminance of each color of R, G, and B is sufficient under any use condition. Further, instead of the fluorescent display tube, the R, G, and B LEDs may be used to form the light emitting dots of the rotary display unit.

As shown in FIG. 1, in the rotary display device 1 of the present embodiment, a part of an image displayed by the rotary display unit 3 is reflected on a support 5 of a support 4 supporting a housing 2. The mirror member 20 is provided detachably. Mirror member 20
May be a normal mirror (a glass plate and an aluminum vapor-deposited film) or a flat mirror of an acrylic mirror (an aluminum vapor-deposited film on an acrylic plate) as in this example, and is mounted so as to be changeable in position by a mounting device 25. The shape and dimensions of the mirror member 20 and the mounting position thereof may be any as long as the display of the display screen of the rotary display unit 3 other than the part visible from a specific direction can be reflected and displayed in a specific direction. Although FIG. 1 is a view of the rotary display unit 3 as viewed from the front, the two mirror members 20 are not yet set to be viewed from the front.

As shown in FIG. 5, the mounting device 25
A vertically movable mounting ring 26 into which the column 5 is inserted and fixed by screws as fixing means, an arm 27 horizontally provided on the mounting ring 26, and a fixing tool 28 provided at the tip of the arm 27; A support member 29 is attached to the fixture 28 so that the angle can be changed. The mirror member 20 (acrylic mirror) is attached to the support member 29 together with the reinforcing aluminum plate 30 on the back surface. The support member 29 is fixed to the fixture 28 at an arbitrary angle by screws as fixing means.

In this example, two mirror members 20 (acrylic mirrors) are attached to the support 5 by two attachment devices 25, respectively. As shown in FIG. 6, when the range in which the display can be viewed from the front is set to be a total of 120 degrees, that is, 60 degrees to the left and right from the observer A side of the center line C, the two mirror-surface members 20 are about 135 degrees left and right from the center line By arranging the two positions at the center and appropriately setting the dimensions in the lateral direction, at least a part of the side surface that cannot be seen from the front can be seen from the front observation direction. At this time, a considerable portion of the rotating display unit 3 can be seen from the observer B on the side.

In this embodiment, when the entire circumference is displayed using two mirror members 20 (flat mirrors), as shown in FIG.
Since the display of at least a part of the side surface or the back surface that cannot be seen without a mirror is reflected on the two mirror members 20 (mirrors), a wide display range can be obtained.

In FIG. 7, since the content displayed on the mirror member 20 is a character, the image data given to the driving means is changed so that a mirror image is displayed on the portion of the rotary display unit 3 where the corresponding portion is displayed. Keep it. For example, the range that can be visually recognized from a specific direction is about 120 degrees as described above, and thus input data in the other range (about 240 degrees) may be inverted.

As shown in FIG. 8, when displaying a moving image which scrolls right and left instead of characters, the movement of the central portion for directly observing the display of the rotary display unit 3 and the mirror member 2
Since the movement of the left and right images reversed and displayed at 0 is opposite as shown by the arrow in the figure, it looks as if three display devices are installed. Also, a display with depth can be obtained.

As shown in FIG. 9, if the mirror member is a concave mirror 31 in this example, the range seen from the front and other directions is further expanded. The radius of curvature of the concave mirror 31 is set in a range where the image is not distorted, for example, about several meters.

As shown in FIG. 10, in this example, even if only one mirror member 20 of the plane mirror is used, the range seen from the front and other directions is enlarged.

FIG. 11 shows another example of an attaching device for attaching the mirror member 20 to the support 5. The mounting device 35 is
A vertically movable two-piece mounting ring 36 into which the column 5 is inserted and fixed with screws as fixing means;
6, two arms 37 provided horizontally.
A holder 38 provided at the tip of the
And a rotatable vertically long supporting plate 40. The mirror member 20 is attached to the support plate together with the reinforcing aluminum plate 30 on the back surface.

[0036]

According to the rotary display device of the present invention, since the rotary display unit capable of displaying the entire circumference is combined with the mirror surface member, when viewed from a specific direction (for example, from the front), the rear surface and / or both right and left sides are provided. The display of the surface can also be seen, and the viewing range can be expanded. In particular, when a concave mirror is used as the mirror member, the visible range can be further expanded. In the case of a screen display with left and right movement (for example, a display screen in which a car moves from right to left),
The movement of the mirror image formed on the mirror surface is opposite to that of the display screen of the rotating display unit. Therefore, it looks as if a plurality of display devices are installed. Furthermore, since the mirror image that can be made into a mirror surface looks deeper than the display screen of the rotating display unit,
A display with depth is obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing a first example of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a rotary display unit according to a first example of an embodiment of the present invention.

3A is a front view of a light emitting device used in a first example of an embodiment of the present invention, and FIG. 3B is a longitudinal sectional view in FIG.

FIG. 4 is a diagram showing another example of the arrangement of the light emitting dots in the first example of the embodiment of the present invention.

FIG. 5 is a perspective view of a mounting device according to a first example of an embodiment of the present invention.

FIG. 6 is a plan view showing a positional relationship between a rotation display unit and a mirror member in the first example of the embodiment of the present invention.

FIG. 7 is a front view showing a display example in the first example of the embodiment of the present invention.

FIG. 8 is a front view showing a display example according to the first example of the embodiment of the present invention.

FIG. 9 is a plan view showing a case where a concave mirror is used as a mirror member in the first example of the embodiment of the present invention.

FIG. 10 is a plan view showing a case where one plane mirror is used as a mirror member in the first example of the embodiment of the present invention.

FIG. 11 is a perspective view showing another example of the mounting device according to the first embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rotary display device, 3 ... Rotation display part, 4 ... Support base as holding part of rotation display part, 9 ... Rotation axis, 10 ... Fluorescent display tube as light emitting element, 17 ... Light emitting dot, 20 ... Mirror surface member , 31 ... concave mirror as mirror member.

Claims (6)

[Claims] 1. A light emitting element in which a predetermined number of light emitting dots are respectively arranged at a predetermined pitch in a column direction parallel to a rotation axis;
A rotary driving unit for rotating the light emitting element with the light emitting side facing the front about a rotation axis, and a control unit for lighting and driving a predetermined light emitting dot of the light emitting element in synchronization with the driving of the rotary driving unit. A rotary display device, comprising: a display unit; and a mirror member attached to the rotary display unit so as to reflect a part of an image displayed on the rotary display unit. 2. The rotary display device according to claim 1, wherein the mirror member is attached to a holding unit that holds the rotary display unit. 3. The rotary display device according to claim 1, wherein the light emitting element is selected from a fluorescent display tube and an LED. 4. The rotary display device according to claim 1, wherein two or more mirror members are provided. 5. The rotary display device according to claim 1, wherein the mirror member is a concave mirror. 6. The rotary display device according to claim 1, wherein the image reflected and observed by the mirror member is inverted and displayed on the rotary display unit.