JP3285389B2 - Illuminated multicolor display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a plurality of color display elements provided with a plurality of color display elements, each of which is provided with a plurality of colors and is rotated to direct a desired color coating surface to the display side. The present invention relates to a multicolor display device which is used as an advertisement display panel or a transportation guide panel.

[0002]

FIG. 8 is a perspective view of a conventional multicolor display device. A plurality of color display elements, each of which has a cylindrical color display body 11 painted in several colors parallel to its axis and rotatably supported, are arranged in a row on a ground plate 12 and a circuit board 13 which are overlapped. The color display elements are arranged in rows and columns by mounting them on the motherboard 14 in a plurality of rows. The color display 11 is generally painted in four colors of red, green, blue and white, but may be four or more colors. Although not shown in the figure, a step motor structure is built in each of the color display bodies 11, and the motor is driven by a drive signal supplied from a control device (not shown) through the motherboard 14 and the circuit board 13, and And the color display body 11 integrated with the rotation shaft rotates to stop the desired color at a position facing the display side. The mask 15 on the front surface covers between the color display elements and the color display element 11.
This prevents the colors other than the part facing the front from being seen, and prevents the motherboard from being seen between the color display elements, thereby preventing the color contrast from lowering. The number of color display elements mounted on one motherboard is, for example, 256 in 16 rows × 16 columns.
This is referred to as one color display unit 21. By arranging a number of such color display units 21 in rows and columns, characters and images can be displayed by the color mixing effect of the individual color display elements. A multi-color display device that displays various colors. Arrow 17 indicates the viewing direction.

[0003]

However, in such a conventional multicolor display device, the color display element itself does not emit light like a light emitting diode or the like, but displays colors by reflection of external light. For this reason, there was a disadvantage that it became difficult to see immediately when the surroundings were dark.

[0004]

In order to solve the above-mentioned problems, the present invention uses a translucent color display which transmits and reflects light, and a light source is provided outside the color display, and a light source is provided. The light is split and guided to the inside of the color display by an optical fiber, a light guide plate, or the like, and this is illuminated from inside.

[0005]

[Function] Since the translucent color display is illuminated from the inside,
The color display element itself looks shiny, and a clear color display is performed even when the surroundings are dark. In a bright place, color display is performed by reflection of external light.

[0006]

1A is a sectional view of a color display device according to the present invention, and FIG. 1B is a sectional view taken along line XX of FIG. 1A. A cylindrical color display 11 is fixed to a rotor composed of a rotating shaft 31 and a magnet 32. The cylindrical surface of the color display 11 is, for example, painted in red (R), green (G), blue (B), and white (W) in parallel to the axis. Four magnetic cores 35 integrally formed from the ground plate 12 made of a magnetic material are arranged at equal intervals around the rotor. A coil 36 is wound around each magnetic core 35 and held by a stator frame 39 so that the magnet 3
The upper end of the magnetic core 35 is joined to the stator 37 surrounding the stator 2 to form a stator. Power is supplied to the coil 36 from a drive circuit (not shown) to each of the stators 37.
Is magnetized, the rotor rotates due to the action of the magnetic field of the stator 37 and the magnetic pole of the magnet 32, for example, as shown in FIG.
As shown in (1), the desired color of the color display 11 can be directed to the display side. A large number of such color display elements are arranged in a matrix to form a multicolor display device.

The above is the basic structure, which can be seen in the past. Next, the structure of the illumination according to the present invention will be described. The color display 11 is made of a translucent material and is translucent in a colored state. A light guide plate 18 made of transparent plastic or the like is provided so as to overlap with the base plate 12, and a rising portion of the tip is a light radiating portion 18a, which is disposed inside the color display 11 and between the coil 36. ing. As seen in FIG. 1B, the radiating portion 18a has an arc-shaped cross section. In FIG. 1A, the other end of the light guide plate 18 protrudes from the back surface of the motherboard 14 and is tightly connected to a photoconductive member, for example, an optical fiber bundle 23 by an optical connector 24. The light guide plate 18 is supplied with illumination light through the optical fiber bundle 23, emits light from the radiating portion 18a, and
Is illuminated from the inside. Thus, the color display 11 emits light brightly to display a color. Further, the color display 11 is made translucent so that the color can be seen well by reflecting the surrounding external light.

FIG. 2 is a detailed cross-sectional view of the light guide plate 18, in which a light beam 42 entering from a light incident surface 41 is turned upward by a lower reflecting surface 43 inclined at 45 °, and is stepped on the inner surface of the radiating portion 18a. The direction is changed again by the upper reflecting surface 45 inclined at 45 ° provided in the light emitting device, and is radiated from the radiation surface 49. Thus, FIG.
With such an arrangement, the color display 11 is illuminated from the inside. The light guide plate 18 has a structure other than the light incident surface 41 and the light emitting surface 49.
All are plated to increase light reflectance and reduce light leakage loss.

To see what is illuminated with such a structure is to see the light from the light source through the color of the color display 11, and a bright luminescent color is seen. In other words, if you look at the movie screen in the auditorium, you are looking at the reflected light of the screen and it is not so bright, but if you look at the projector from the screen position you will see a very bright film surface It is the same as The emission surface 49 and the upper emission surface 45 of the light guide plate 18 are made rough according to the brightness of the light source and the size of the color display body 11 to scatter light or to increase the number of steps of the upper reflection surface 45. , A favorable brightness can be obtained.

A radiating portion 18a rising from the light guide plate 18 is provided inside each color display 11 of a number of color display elements constituting the multicolor display device.
A structure in which a number of radiating portions 18a are provided on a single light guide plate 18 is used. As shown in FIG. 3, one light guide plate 18 having, for example, 16 radiating portions 18a is formed by integrally molding with plastic. Notch 5 on the side of light guide plate 18
The optical fiber bundle 23 is fixed to a notch 51 of the optical connector 24, and the end face 57 of the optical fiber bundle 23 fixed between the two metal plates 55 is fixed to the light incident surface of the light guide plate. 59 and held in close contact. The projection 61 is a pawl spring 53
It is for attaching and detaching operation.

FIG. 4 shows a mechanism of a light source unit for sending light to an optical fiber. Light emitted from a lamp 65 is converted into a parallel light by an optical system such as a reflector 67 and a lens 69 and enters an end face of an optical fiber bundle 71. The optical fiber bundle 71 is bundled in a cylindrical shape by a frame 73. The bundle is divided into, for example, 16 sets as shown in the drawing, and bundled like 75 and 77, respectively. To form

FIG. 5 shows another embodiment of the light source.
The parallel light beams formed by the reflector 67 and the lens 69 are divided and condensed by the lens group 79, and supplied to, for example, 16 sets of optical fiber bundles 75 to form the optical fiber bundle 23 in FIG.

FIG. 6 shows a color display unit 21 in which the light guide plate 18 of FIG. 3 is incorporated in the color display unit configured as shown in FIG. The connection side of the light guide plate 18 with the optical connector is:
It protrudes rearward through a mounting hole formed in the motherboard 14 and is connected to an optical fiber bundle 23 by an optical connector 24 as shown in FIG. Color display 1 in the upper right of FIG.
1, the radiating portion 18 of the light guide plate 18 is cut out.
a is inside the color display 11 and the emitted light is
Illuminate 1 from inside. A viewer of the color display 11 looks directly at the light from the light source colored by the color of the color display 11 and looks bright like a light emitting diode.

FIG. 7 shows a color display unit 21 as shown in FIG.
FIG. 1 is an external view of a structure in which light is individually or severally collected and stored in a sealed outer case 80, and light is supplied by an optical cable 78 as an optical fiber bundle. The optical cable 78 is a waterproof ring 9 provided on the back cover 81 of the outer case.
The interior of the case is entered from one place, and the inside of each case is illuminated by the above-described structure for each color display. A number of outer cases 80 containing the color display units are
The support frame A (83) is fixed to the support frame A (83) with screws 84 by the handle 82 of the support frame B (8).
The multicolor display device in which a large number of illuminated color displays are arranged in a matrix by fixing the screws 5) to 5).

[0015]

According to the multicolor display device of the present invention, each color display element emits light in a dark place to provide a clear color display, and a non-display of a mask or the like because the luminous body is visually connected. The part is not conspicuous, and the apparent opening degree of the display increases. Further, in a bright place, the colored surface reflects the external light and can be seen well, so that there is a display effect superior to a light emitting diode or the like. As described above, while the effect of the illumination is large, the light source unit is provided apart from the color display unit, so that manufacture and maintenance are easy.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view of a color display device according to the present invention, and FIG. 1B is a cross-sectional view taken along line XX of FIG. 1A.

FIG. 2 is a cross-sectional view of a light guide plate according to the present invention.

FIG. 3 is a perspective view of a light guide plate and an optical fiber bundle according to the present invention.

FIG. 4 is an example of a light source used in the present invention.

FIG. 5 is another example of a light source used in the present invention.

FIG. 6 is a perspective view of a color display unit according to the present invention.

FIG. 7 is a rear view of a state in which the color display units of FIG. 6 are housed in an outer case and are arranged in a matrix on a support frame.

FIG. 8 is a perspective view of a conventional color display unit.

[Explanation of symbols]

 Reference Signs List 11 color display body 14 motherboard 18 light guide plate 21 color display unit 23, 71, 75, 77 optical fiber bundle 24 optical connector 43 lower reflecting surface 45 upper reflecting surface 65 lamp 67 reflector 69, 79 lens

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-5781 (JP, A) JP-A-60-159487 (JP, U) JP-A-3-14688 (JP, U) JP-A-63 125893 (JP, U) Japanese Utility Model 2-149987 (JP, U) Japanese Utility Model 2-89346 (JP, U) Japanese Utility Model Application 54-81550 (JP, U) Japanese Utility Model Utility Model 59-15074 (JP, U) 60-49586 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) G09F 9/37 G09F 13/04-13/18

Claims (6)

(57) [Claims] 1. A multicolored cylindrical color display body is fixed to a rotating shaft with a magnet, and a plurality of magnetic cores, coils and a stator are arranged around the magnet to perform color display.
Housed a group of color display elements that perform color display by rotating the body
In a multicolor display device configured by arranging a plurality of exterior cases vertically and horizontally , a light source unit, a light guide plate, and a photoconductive member are provided, the light source unit is arranged outside the exterior case , and the light guide plate is illuminated by the light. The incident part can be connected to the outside
Then, the light emitting part is inserted inside the color display,
An illuminated multicolor display device having a structure in which the light source unit and the light guide plate are connected to each other by a photoconductive member and housed in the outer case together with the group . 2. The illuminated multicolor display device according to claim 1, wherein the light guide plate has a reflecting surface to change a light path. 3. The illuminated multicolor display device according to claim 1, wherein the photoconductive member comprises an optical fiber bundle and an optical connector. 4. The illuminated multicolor display device according to claim 1, wherein one light guide plate has a plurality of light emitting portions for a plurality of color displays. 5. The multi-color display device with illumination according to claim 1, wherein the light source unit includes an optical system including a reflector or a lens.
Lighted multicolor display device having a structure for supplying the substantially parallel light to the photoconductive member. 6. The illuminated multicolor display device according to claim 1, wherein the light emitting portion of the light guide plate has a cross section in an arc shape centered on the rotation axis.