JPH0210432B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device that can be applied to automobile indicators, direction indicators, general displays, signboards, decorations, and the like.

Various display devices have been proposed in the past, and among them, liquid crystal display devices are used in various fields because they are flat and thin and have advantages such as low power consumption.

For example, if a liquid crystal display device that displays the word "STOP" is installed on the rear window and the brake pedal is pressed, the stop light will light up in conjunction with this, and if the word "STOP" is displayed, only the stop light will light up. It is possible to alert drivers of following vehicles more than when the lights are turned on.

Liquid crystal display devices are flat and thin, so they do not get in the way when installed on the rear window, but they are expensive, and reflective types have the problem of blocking the view when not in use, and they are also susceptible to sunlight. There are problems such as deterioration due to exposure.

In addition, if liquid crystal display devices are applied to store window displays, signboards, or decorations, it will not require a large-scale installation, but it will be costly and the display device will be conspicuous when not in use, such as during the daytime. There is a problem that the appearance of windows etc. is spoiled.

The present invention has been made in view of the above circumstances, and its purpose is to prevent the rear view of an automobile from increasing costs, obstructing the view when not in use, or impairing the appearance of the vehicle by becoming a hindrance. It is an object of the present invention to provide a display device that can be widely applied to windows or shop windows.

In order to achieve the above object, the present invention provides a display formed in a pattern such as a predetermined character or shape using a material that can be seen through and shines when irradiated, which is obtained by mixing light reflecting and dispersing fine particles into a transparent material. A transparent body that supports the display section inside or on the surface thereof, and a light source that irradiates the display section with light.

An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show a first embodiment in which the present invention is applied to an automobile display. Reference numeral 1 indicates a rear window, and a rectangular plate-shaped transparent body 2 and a light source part 3 provided along the lower edge of the transparent body 2 are installed in close contact with each other at appropriate positions.

A display section 5 in the shape of the word "STOP" is fitted inside the transparent body 2 and supported by a material that is made transparent and shines when irradiated, which is obtained by mixing light reflecting and dispersing fine particles 4 into a transparent material. be done.

The transparent body 2 and the display section 5 are made of transparent synthetic resin (acrylic resin, silicone rubber), glass, or the like.

As the light reflection dispersion fine particles 4, mica, diatomaceous earth, activated clay, talc, metal powder, alumina powder, etc. are used. In order to improve dispersibility, a material that does not have much difference in specific gravity from the material constituting the display section 5 is used. For example, when the display section 5 is made of transparent synthetic resin, fine powder such as mica, diatomaceous earth, activated clay, or talc is used, and when it is made of glass, metal powder or alumina powder is used.

The particle size of the light reflection dispersion fine particles 4 is in the range of 1μ to 200μ, preferably 10μ to 50μ. In this way, when light is irradiated from the light source section 3, the display section 5 is illuminated by the light reflected from the particles 4, and when the light is not irradiated, the display section 5 can be seen through, and the display section 5 can be placed inside the transparent body 2. 5 can be made almost invisible. However, if it is smaller than 1μ, the display section 5 becomes cloudy, and if it is larger than 200μ, the presence of the fine particles 4 becomes conspicuous.

The amount of light reflection dispersion fine particles 4 mixed is at a volume ratio of 1/
100000 to 1/100, preferably 1/1000.
If it is less than 1/100,000, the light from the light source part 3 will not cause the display part 5 to emit light;
If the number is more than 100, it becomes difficult to see through.

The light source section 3 includes a cover 6 having a U-shaped cross section, a colored resin plate 7, a long cylindrical lamp 8, and a reflecting mirror 9 having a U-shaped cross section.

The colored resin plate 7 is colored red, for example.
Bent parts 7a, 7a formed by bending at right angles are provided at both ends in the length direction, and these bent parts 7a, 7a
Lead wires 8a, 8a of the lamp 8 are led out from there.

The power source for lamp 8 is a stop lamp (not shown).
Similarly, a battery 10 is used, and a switch 11 that opens and closes using the hydraulic pressure of the brake system is provided between the battery 10 and the lamp 8.

Next, the operation of the above embodiment will be explained.

When the brake pedal is depressed, the switch 11 closes and the stop lamp lights up, and at the same time the lamp 8 lights up. The light from the lamp 8 enters the transparent body 2 through the colored resin plate 7 either directly or after being reflected by a reflecting mirror 9. The light entering the transparent body 2 enters the progress display section 5 without being scattered, is reflected on the surface of the fine particles 4, dispersed, and scattered, and the display section 5 emits light in the color of the colored resin plate 7.

Therefore, the word "STOP" is displayed in red and glowing on the rear window 1 to alert drivers of following vehicles.

When not in use, the display section 5 can be seen through, so the view is not obstructed in any way.

In the first embodiment, the display section 5 is fitted into the transparent body 2, so the outlines of the characters are clearly visible and easy to see.

Note that the display portion 5 and the transparent body 2 may be integrally molded (double molding). In this case, the outlines of the characters are not very sharp, so they are outlined with paint.

3 and 4 show a second embodiment of the invention. In this second embodiment, the display section 5 is attached directly to the rear window 1 without being fitted into the transparent body 2, and the light source section 3 is attached to the frame rubber 12 of the rear window 1, so that the light from the light source section 3 is The display unit 5 is directly irradiated with light.

In this second embodiment, as in the first embodiment, the outline of the characters is prominent and easy to see, and since the display section 5 and the light source section 3 are separate bodies, it is easy to install. There is a degree of freedom in the construction, and the light source section 3 can be attached to the frame rubber 12 so as not to be visible from the outside.

Figures 5 and 6 show the third example applied to a direction indicator.
An example is shown. Reference numeral 13 in the figure is a display section,
Similar to the display section 5 described above, light reflecting and dispersing fine particles 4 are mixed in, and are shaped like rectangular plates rather than letters, etc., and are arranged on the surface of the rear window 1 in a plurality of pieces (three pieces in the drawing) at appropriate intervals. ) installed.

In addition, 14 is a light source section, and a motor ((not shown)
A cylindrical reflecting mirror member 1 rotationally driven by
A lamp 16 is installed at the rotation center axis position of 5.

A condenser lens 17 and a slit 18 cut out in the shape of an arrow are provided at appropriate positions on the reflective mirror member 15.

In this third embodiment, when the front, rear, and side turn signal lamps flash when turning right or left, the reflective mirror member 1
5 rotates, the lamp 16 lights up, and the display section 13 is sequentially illuminated with light in the shape of an arrow. As a result, the portion of the display unit 13 that is irradiated with light is illuminated in the shape of an arrow, and is visually observed as if the arrow were moving.

Therefore, the driver of the following vehicle can clearly confirm whether to turn right or left by the arrow displayed on the rear window 1 outside the turn signal lamp even from a distance.

When not in use, the display section 13 can be seen through, so the view is not obstructed.

Note that the display section 13 may be formed in a band shape.

7 and 8 show a fourth embodiment applied to wall decoration. In the figure, reference numeral 19 denotes a display section, which, like the display section 5 described above, contains light reflecting and dispersing fine particles 4, is shaped like a Venus de Milo image, and is embedded in the transparent body 20.

A light source section 3 is provided at the lower edge of the transparent body 20, and is embedded in the wall 21 so that the surface of the transparent body 20 and the front surface of the light source section 3 coincide with the wall surface.

When the room is darkened and light is irradiated from the light source section 3 to the display section 19, the display section 19 will be illuminated and a Venus de Milo image will appear on the wall 21.

When not in use, it is transparent and gives the impression of being empty, and does not spoil the appearance of the wall 20.

Note that instead of being buried in the wall 21, it may be attached to a window. In this case, since it is transparent when not in use, the displayed products can be viewed through the transparent body 20 and the display section 19 without getting in the way.

Instead of attaching it to the wall 21 or the window,
Can be used as a figurine. In this case, the transparent body 20 may be shaped into a cube, and the light source section 3 may be mounted on the base.

If the display part 19 is shaped like a message and is attached to a window or the like, it can be used as a signboard.

As explained above, according to the present invention, a display portion formed in a pattern such as a predetermined character or shape using a material that can be seen through and shines when irradiated, which is obtained by mixing light reflecting and dispersing fine particles into a transparent material. ,
Since the display device consists of a transparent body that supports the display section and a light source that irradiates the display section with light, it is less expensive than a liquid crystal display device, etc., and does not block the view when not in use. It does not get in the way and spoil the appearance, so it can be widely applied to the rear window of a car as an indicator or turn signal, or as a door window display, signboard, decoration, etc.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the present invention, FIG. 1 is a partially cutaway front view, FIG. 2 is a partially enlarged cross-sectional view, and FIGS. 3 and 4 are a first embodiment of the present invention. A second embodiment is shown, FIG. 3 is a front view, FIG. 4 is a sectional view, FIGS. 5 and 6 are a third embodiment of the present invention, FIG. 5 is a plan view, and FIG. Front view, Figures 7 and 8
The figures show a fourth embodiment of the invention, with FIG. 7 being a side view and FIG. 8 being a front view. 4... Light reflection dispersion fine particles, 5, 13, 19...
Display section, 3, 14... light source section.

Claims (1)

[Claims] 1. A display part formed in a pattern such as a predetermined character or shape using a material that can be seen through and shines when irradiated, which is obtained by mixing light reflection/dispersion fine particles into a transparent material, and a display part formed inside or on the surface of the display part. A display device comprising: a transparent body supported by a transparent body; and a light source that irradiates light to the display section.