JPH031183A - Display device - Google Patents

Abstract

PURPOSE:To protect a display element by a simple structure, and also, to improve the vision property of the display surface by providing a louver consisting of plural pieces of light shielding plates connected to each other to be interlocked and to execute an opening/closing operation, on the display surface. CONSTITUTION:A louver 3 for protecting the display surface is installed on the display surface consisting of a display element 2, and the louver 3 consists of plural pieces of light shielding plates 5 placed in parallel on plural upper and lower states, and each light shielding plate 5 is installed so as to be rotatable to the body 1 through a shaft 4, and also, connected so as to be rotatable to a driving piece 7 for opening and closing through a shaft 6 on both its sides. In this state, each light shielding plate 5 turns between an open position being vertical to the display surface and a closed position for covering the display surface, on the display surface, connected to each other and interlocked so as to open and close the display surface by the whole louver 3. In such a way, the display surface is protected by a simple structure, and also, by improving the vision property of the display surface, it is possible to make a display image easily visible.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a display device such as an electronic display board that displays various information, time, information, video, etc., and particularly relates to a protective structure for the display surface. It is.

[Prior Art] The display device has a configuration in which a plurality of display elements using, for example, discharge tubes are arranged vertically and horizontally to form a display surface, and the display elements are selectively turned on according to displayed information, or a CRT, a discharge lamp, etc. A configuration in which images are displayed using, etc. is used.

Conventional large display devices installed outdoors, for example, are equipped with a sliding shutter to protect the display surface when not in use, and when in use, the shutter is slid to open the entire display surface and display image information. was.

Further, in order to prevent dust from adhering to the light emitting surface of the display element, a structure in which the display surface is covered with a transparent plate such as a glass plate is sometimes used.

[Problems to be Solved by the Invention] In the conventional display device, the shutter structure for protecting the display surface is complicated and large-scale, and installation is troublesome.

Furthermore, if the surface is covered with a glass plate, the display may become difficult to see due to total reflection of light on the glass surface.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and protects the display surface with a simple structure without using a large sliding shutter or covering the display surface with a transparent plate such as a glass plate. The present invention also aims to provide a display device that improves the visibility of the display surface and makes it easier to see displayed images.

[Means for Solving the Problems] In order to achieve the above object, a display device according to the present invention includes a louver made of a plurality of mutually connected light shielding plates for opening and closing the display surface on the display surface. We are prepared.

[Function] Each light shielding plate of the louver rotates on the display surface between an open position perpendicular to the display surface and a closed position covering the display surface.

The light shielding plates are interconnected and interlocked so that the entire louver opens and closes the display surface.

[Example] FIG. 1 is a side view of a display surface portion of a display device equipped with a display surface protection louver according to the present invention.

(a) shows the louver in an open state, (b) shows the louver in a closed state, and FIGS. 2 and 3 are a front view and a top view, respectively, of the display device in FIG. 1. ,'s1
Similarly to the figure, (a) shows the louver in an open state, and (b) shows the louver in a closed state.In the main body 1 of the display device, there are a plurality of display elements 2 each made of a light emitting element using, for example, a discharge tube.
are arranged in a grid pattern vertically and horizontally. These display elements are selectively energized and emit light to form character images and the like of information to be displayed. A display surface protection louver 3 is mounted on the display surface made up of these display elements 2. This louver 3 is made up of a plurality of light shielding plates 5 arranged in parallel in a plurality of stages vertically. Each light shielding plate 5 is rotatably attached to the main body 1 via a shaft 4. Each light shielding plate 5 is connected to an opening/closing drive piece 7 via a shaft 6 on both sides thereof.
is rotatably connected to. Each light shielding plate 5 is connected to each other via this drive piece 7. There is a gear 8 on the light shielding plate 5 at the bottom.
A motor 9 is connected via m and 8b. 10 is a control section for the motor 9.

By driving the motor 9 via the control unit 10, the lowermost light shielding plate 5 rotates around the shaft 4, and is placed in an open position perpendicular to the display surface (Figure a) and a closed position covering the display surface (Figure B). Rotate between. The opening/closing operation of the lowermost light shielding plate is transmitted to each upper light shielding plate 5 via the driving piece 7, and the entire louver 3 is opened/closed in conjunction.

When the louver 3 is open, as shown in FIG. 2(a), the display element 2 is exposed between each of the light shielding plates 5, and information can be displayed. At this time, each light shielding plate 5 blocks sunlight and other light from diagonally above, so that the light emitting state of the display element 2 can be clearly identified, and information such as characters on the display element can be easily seen. The width of each light shielding plate 5 (FIG. 3H) is set to a length that does not block the display element, taking into consideration the installation angle of the display device, etc.

When the louver 3 is closed, each light shielding plate 5 covers the entire display surface to protect the display element and prevent dust from adhering to the display element, as shown in FIG. 2(b).

In the above embodiment, gears were used to transmit the rotation of the motor 9 to each light shielding plate 5 of the louver 3, but other transmission means such as a belt or a suitable link mechanism may be used. In addition to the motor, an electromagnetic solenoid or the like may be used, or the driving piece 7 may be directly driven. Alternatively, the louver opening/closing mechanism may be a means operating structure.

The display element 2 is not limited to a light emitting element such as a discharge tube, and may have a structure using a rotating element made of a rotating polygonal column having color-coded display surfaces. The present invention is also applicable to image display devices using CRTs.

[Effects of the Invention] As explained above, in the present invention, a louver consisting of a plurality of light shielding plates connected to each other so as to perform opening and closing operations in conjunction with each other is provided on the display surface. To protect a display element with a simple structure without using a type shutter, to prevent dust etc. from adhering to the display element, and to improve the visibility of the display surface and make it easier to see displayed characters and image information. I can do it. Furthermore, when a discharge tube or the like is used as the display element, a heat retention effect of the display element is obtained, stable discharge characteristics are achieved, and the reliability of the display function is improved.

[Brief explanation of drawings]

FIGS. 1(a) and 1(b) are side views of main parts of a display device according to the present invention in an open state and a closed state, respectively;
2(a) and 2(b) are front views of the display device shown in FIG. 1 with the louver open and closed, respectively, and FIG.
a) and (b) are top views of the louver of the display device of FIG. 1 in an open state and a closed state, respectively; 2: display element, 3: louver, 4.6: shaft, 5: light shielding plate, 7: drive piece. Patent Applicant Toshiba Lighting Co., Ltd. Agent Patent Attorney Tetsuya Ito Agent Patent Attorney Yoshiaki Ikeuchi Figure 2

Claims (1)

[Claims] A display device comprising a louver made of a plurality of interconnected light shielding plates on a display surface for opening and closing the display surface.