JPH0651705A - Multicolor display device with illumination - Google Patents

Abstract

PURPOSE:To provide the multicolor display device which makes bright color display even in a dark place by splitting the light sources provided on the outside of color display bodies and introducing the light rays to the inner side. CONSTITUTION:The light irradiating parts 18a of a light transmission plate 18 are arranged within the many respective translucent color display bodies 11 which are mounted on a mother board 14 of a color display unit and are coated with multiple colors and the light ray from a separately provided light source is introduced by the light transmission material to the light irradiating parts 18a, which in turn illuminate the respective color display bodies 11 from the inner side. Then, the bright display is obtd. in the dark plate; in addition, the color display elements themselves glow and, therefore, the apparent opening rate at which dots appear connective increases. Since the light source part is independent, the degree of freedom of the constitution is large and this device is advantageous in terms of brightness, production, maintenance, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a color display body coated with a plurality of colors, and a plurality of color display elements are arranged in a matrix so as to rotate the color display body so that a desired color coating surface faces the display side. The present invention relates to a multi-color display device which is used as a display board for advertisement or a guide display board for transportation facilities.

[0002]

2. Description of the Related Art FIG. 8 is a perspective view of a conventional multicolor display device. A plurality of color display elements, each of which is a color display element 11 of a cylindrical shape and are rotatably supported by being divided into several colors in parallel with the axis thereof, are arranged in a line on a base plate 12 and a circuit board 13. The color display elements are arranged in rows and columns by mounting them and mounting them on the motherboard 14 in a plurality of rows. The color display 11 is generally applied in four colors of red, green, blue and white, but it may be in 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 given from a controller (not shown) via the mother board 14 and the circuit board 13, This is a structure in which the color display body 11 integrated with the rotating shaft of 1 rotates and stops at a position where the desired color is directed to 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 color contrast from being lowered by seeing colors other than the part facing the front of the product or seeing the motherboard from between the color display elements. The number of color display elements mounted on one motherboard is 256 rows by 16 rows × 16 columns, for example.
Each color display unit 21 is a single color display unit 21, and by arranging a number of such color display units 21 in a matrix, a character or an image can be displayed by the effect of mixing the colors represented by the individual color display elements. The multi-color display device displays various colors. Arrow 17 indicates the observation direction.

[0003]

However, in such a conventional multicolor display device, the color display element itself does not emit light unlike a light emitting diode or the like, but it shows a color by reflection of external light. Therefore, there is a drawback that it becomes difficult to see it immediately when the surroundings are dark.

[0004]

In order to solve the above problems, the present invention uses a semi-transparent color display that both transmits and reflects light, and a light source is provided outside the color display, The light is split and guided to the inside of the color display body by an optical fiber, a light guide plate, etc., and this is illuminated from the inside.

[0005]

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

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 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 body 11 is fixed to a rotor including a rotating shaft 31 and a magnet 32. The cylindrical surface of the color display body 11 is painted parallel to the axis, for example, red (R), green (G), blue (B), and white (W). Four magnetic cores 35 integrally formed from the base plate 12 which is a magnetic material are arranged at equal intervals surrounding the rotor. A coil 36 is wound around each magnetic core 35 and is held by a stator frame 39 so that the magnet 3
The upper ends of the magnetic cores 35 are respectively coupled to the stators 37 that surround 2 to form a stator. By supplying electric power to the coil 36 from a drive circuit (not shown) to magnetize each stator, the magnetic field generated by the stator 37 and the magnet 32
The rotor rotates due to the action of the magnetic poles, so that a desired color of the color display member can be directed to the display side, for example, as shown in FIG. A large number of such color display elements are arranged in a matrix to form a multicolor display device.

Although the above is the basic structure, which has been conventionally found, 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 semitransparent in a colored state. A light guide plate 18 made of transparent plastic or the like is provided so as to overlap the base plate 12, and the rising part of the tip is a light emitting part 18a, which is arranged inside the color display body 11 and between the coil 36. ing. As shown 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 projects to the back surface of the mother board 14 and is tightly coupled 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, and emits light from the emitting portion 18a to emit light from the color display body 11.
Is illuminated from the inside. As a result, the color display body 11 emits bright light to display in color. Further, the color display 11 is made semi-transparent so that the color can be seen well by reflecting the ambient light.

FIG. 2 is a detailed cross-sectional view of the light guide plate 18. The light beam 42 entering from the light incident surface 41 is turned upward by the lower reflecting surface 43 inclined by 45 ° and is gradually changed to the inner surface of the radiating portion 18a. The light is emitted from the emission surface 49 by changing its direction again at the upper reflection surface 45 inclined at 45 ° provided on the. Thus, FIG.
With such an arrangement, the color display body 11 is illuminated from the inside. The light guide plate 18 except the light incident surface 41 and the light emitting surface 49 is
All are plated to increase the light reflectance and reduce light leakage loss.

To see what is illuminated by such a structure is to see the light from the light source through the color of the color display body 11, and a bright emission color can be seen. In other words, when you look at the screen of a movie in the audience, you are looking at the light reflected by the screen and it is not so bright, but when you look at the projector from the position of the screen, you see the very bright film side. Is the same as. By making the emitting surface 49 and the upper emitting surface 45 of the light guide plate 18 rough according to the brightness of the light source and the size of the color display 11 to scatter light or increase the number of steps of the upper reflecting surface 45. , It is possible to obtain preferable brightness.

Inside the respective color display bodies 11 of a large number of color display elements constituting the multicolor display device, there is a radiating portion 18a rising from the light guide plate 18.
A structure in which a number of radiating portions 18a are provided on the light guide plate 18 is used. As shown in FIG. 3, one light guide plate 18 having, for example, 16 radiating portions 18a is integrally molded of plastic. Notch 5 on the side surface of the light guide plate 18
1, the pawl spring 53 of the optical connector 24 is locked in the notch 51, and the end face 57 of the optical fiber bundle 23 fixed by being sandwiched between the two metal plates 55 is used as the light incident surface of the light guide plate. Hold it in close contact with 59. The protrusion 61 is a pawl spring 53.
It is for detaching operation.

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

FIG. 5 shows another embodiment of the light source, which is a lamp 65,
The parallel rays formed by the reflector 67 and the lens 69 are divided and condensed by the lens group 79, and are supplied to, for example, 16 sets of optical fiber bundles 75 to become 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 constructed as shown in FIG. The connection side of the light guide plate 18 with the optical connector is
It protrudes to the back side through the mounting hole formed in the motherboard 14, and is connected to the optical fiber bundle 23 by the optical connector 24 as shown in FIG. Color display 1 on the upper right of FIG.
As shown by cutting out 1 of FIG.
a is inside the color display body 11, and the emitted light is the color display body 1.
Illuminate 1 from the inside. A person who looks at the color display body 11 looks directly at the light from the light source colored with the color of the color display body 11, and looks as bright as the light emitting diode.

FIG. 7 shows a color display unit 21 as shown in FIG.
FIG. 3 is an external view of a structure in which light is individually or collectively grouped in a sealed outer case 80 and light is supplied by an optical cable 78 that is an optical fiber bundle. The optical cable 78 is the waterproof ring 9 provided on the back cover 81 of the outer case.
The inside of the case enters from the position 1, and inside, each color display body is illuminated by the structure as described above. A number of exterior cases 80 containing color display units, a back cover 81
The handle 82 is used to fix the support frame A (83) to the support frame A (83) with screws 84.
By fixing to 5) with screws 87, a multicolor display device in which a large number of illuminated color display bodies are arranged in a matrix is constructed.

[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 the light emitters are visually connected to each other so that a mask or the like is not displayed. The part is inconspicuous, and the apparent aperture of the display increases. Further, in a bright place, the colored surface reflects external light so that it can be seen well, and thus has a display effect superior to that of a light emitting diode or the like. In this way, while the effect of illumination is great, since the light source section is provided separately from the color display unit, manufacturing and maintenance are easy.

[Brief description of drawings]

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 the color display unit of FIG. 6 housed in an outer case and arranged in a matrix on a support frame.

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

[Explanation of symbols]

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

Claims (6)

[Claims] 1. A multicolor display in which a multicolored color display is fixed to a rotating shaft with a magnet, and a motor having a plurality of magnetic cores, coils, and stators arranged around the magnet is used for color display. In the device, a multicolor display device with illumination having a structure including a light source part, a photoconductive member, and a light guide plate, and a light emitting part of the light guide plate being inside a color display body. 2. The illuminated multicolor display device according to claim 1, wherein the light guide plate has a reflecting surface and changes the path of light. 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 display bodies. 5. The illuminated multicolor display device according to claim 1, wherein the light source section includes an optical system including a reflector or a lens.
An illuminated multicolor display device with a structure that supplies almost parallel light rays to the photoconductive section. 6. The illuminated multicolor display device according to claim 1, wherein the light emitting portion of the light guide plate has an arc-shaped cross section with a rotation axis as a center.