JPS58163984A - Display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a display device having a display section that displays information by dividing brightness and darkness into each display unit arranged in a matrix.

[Technical background of the invention and its problems]

In a conventional display device of this kind, a light source such as a light bulb is provided for each display unit, and by turning on and off the light source, brightness and darkness are provided in the display section, and υ information is displayed by this brightness and darkness.

However, generally to display one character, 1
Since approximately 5 x 25 display units are required, this conventional configuration requires the same number of light sources and has the disadvantage of increasing power consumption. Therefore, in order to reduce power consumption, for example,
As shown in Publication No. 1-47680, 1 (1i!
Light is transmitted from the light source of the illuminator through multiple optical fibers, and an exit port of the optical fibers is provided in each display unit, and the transmission and blocking of the light transmitted through the optical fibers is achieved by mechanical blocking such as a baffle plate. It has been proposed that a mechanism is provided and controlled to display information by changing the brightness and darkness of the display section.

However, in such a configuration, since the shutoff mechanism is mechanical, there is a risk of failure due to wear, and the structure is complex, making it difficult to downsize and expensive.

For this reason, as shown in Japanese Patent Application No. 56-154672, in a device that transmits light from a light source through an optical fiber and displays the display with brightness and darkness, the transmission of light through the optical fiber is replaced by electricity. A device equipped with a control section that varies and controls the light transmittance based on a signal has been proposed.

It has been confirmed that this device has a simple structure and can be made at low cost, as it does not require mechanical light shielding, so it is less likely to malfunction and provides a clear display.

However, this device has a control section and a display section separately, and an optical fiber is placed between them.
It was found that there were disadvantages such as a complicated structure and troublesome installation of optical fibers, and improvements were desired.

[Purpose of the invention]

The present invention has been made in consideration of the above-mentioned circumstances, and it is an object of the present invention to provide a display device that has a simple structure and requires fewer optical fibers to be attached.

[Summary of the invention]

The present invention is characterized in that one end of a plurality of optical fibers is operatively associated with a light source, and the other end thereof is disposed in a display section that is integrally provided with a control section that controls light transmission by varying the light transmittance using electrical signals. It is characterized by

[Embodiments of the invention]

The details of the invention will be explained with reference to the illustrated embodiments.

1 is a light source, and this light source 1 is, for example, a high-efficiency IJum lamp. Amount of light projected D2. ．．
3. ka8゜、setゎ、i7）04□light
) A plurality of optical fibers 4 are disposed such that one end thereof corresponds operatively to the light source 11C.

The optical fiber 4 can be arranged, for example, as a single fiber body or a plurality of fiber bodies converged into a unit by converging a plurality of fiber bodies at one end side and facing the light source l. 5 is a control section, and this control section 5 is formed of a plurality of control units 6 arranged in a matrix, each corresponding to the optical fiber 4. The control unit 6 of the control section 5 controls the transmission of light through the optical fiber 4 by varying the light transmittance using electrical signals. For example, as shown in FIG. It is possible to form the liquid crystal 11 sealed between two transparent plates 10, 10, etc. Then, this control unit 6 is operated by an operation section (not shown) to control 'l11tW.
For example, while the voltage is applied to iA, the transmittance is 1%.
When no voltage is applied, it becomes transparent with a transmittance of, for example, about 30 degrees, and the transmission of light through the optical fiber 4 arranged accordingly is controlled. Reference numeral 7 denotes a display section, and in this embodiment, the display section 7 is formed integrally with the control section 5, and the control unit 6 constitutes the display section 7. Further, the display section 7 can be provided with a lens. 8 is a support body that supports the optical fiber 4;
For example, an optical fiber insertion hole 9 is provided in the plate body in the form of an IJ rack, and is formed integrally with the control section 5 on the rear surface of the control section 5.

Next, the effect will be explained.

If, for example, the character "A" is to be displayed on the display section 7 as shown in FIG. Then, only the control unit 6 indicated by diagonal lines becomes transparent, and the light transmitted from the light source 1 through the optical fiber 4 passes through the control unit 6 in the transparent state, while the other control units 6 in the opaque state do not receive the light. Transmission is prevented. Therefore, on the display section 7, the part of the control unit 6 that is in the transparent state is displayed with a bright character "C".

Note that information other than the character "A" can be displayed by simply applying voltage to the control unit corresponding to the information to be displayed on the display section 7.

Although this embodiment has been described with respect to the above-mentioned embodiment, the present invention is not limited thereto. For example, the control unit 5 may use an electrochromic device (hereinafter referred to as ECD). When a voltage is applied to this ECU, the ECU becomes colored and becomes opaque, and even when the voltage application is removed, it maintains this opaque state. When a voltage in the opposite direction to the above voltage is applied, it becomes a transparent state, and this reverse '+l[FfE The transparent state is maintained even when the application of is removed. Further, the display section 7 may be provided as a separate matrix-shaped display section in front of the control section.

〔Effect of the invention〕

As described in detail above, the present invention provides an optical fiber with one end serving as a light source and the other end serving as a light source.
Since it is installed in the control section that controls light transmission by varying the light transmittance based on signals, the optical fiber can only be attached to the control section, making it easy to manufacture, simple in structure, and easy to downsize. It can be provided at low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view schematically showing one embodiment of the present invention, and FIG.
The figure is a sectional view, and FIG. 3 is a sectional view showing the main parts. 1.Light source 3.Reflector 4.Optical fiber 7.Display section 5 Control section 6.
Control unit 8...Fiber support patent applicant Toshiba Electric Materials Co., Ltd. agent Patent attorney Ono 1) Hiroo Yoshi 1 Kuchio 2 Bacteria Oh 3 Ken

Claims (1)

[Scope of Claims] (1) A light source; a plurality of optical fibers having one end operatively opposed to the light source; and a plurality of optical fibers arranged in a matrix corresponding to the other ends of the optical fibers, each of which receives an electrical signal. A display section W1° characterized by comprising: a display section integrally provided with a control section that controls transmission of light through the optical fiber by varying the transmittance of light; (2) The display section is an optical It is characterized by being formed to include a fiber support having a fiber insertion hole, and a control section arranged in a matrix corresponding to the other end of the optical fiber inserted into the fiber insertion hole of the fiber support. A display device according to claim (1). (3) The display device according to claim (1) or (2), wherein the control section is formed of liquid crystal. (4) Claim (1) characterized in that the control section is formed of an electrochromic device.
) or the display device described in (2).