JPS581816Y2 - multiple display device - Google Patents

Description

[Detailed description of the invention] The invention relates to a new multiple display device. Specifically, the present invention provides a new multiple display device that has a reduced depth, improved ease of assembly, and further improved the efficiency of use of light sources. This is what I am trying to do.

Conventionally, a display board is used in which an engraved display body such as a character or a symbol drawn by line engraving or stippling is formed on a transparent plate. A so-called multiple display device, in which a large number of such display boards are stacked together, is used to produce a display by shining brightly.

In such a multiplex display device, if there is no space between the stacked display boards, that is, if the display boards are in close contact with each other, the light introduced into the - display board will be in close contact with this display board. If the light enters other display boards, so-called light leakage occurs, which reduces the visibility of the intended display.

Furthermore, if the light that has entered the display panel is incident on the end face at an angle less than the critical angle, it will exit from the end face, causing a phenomenon in which the end face appears to be shining.

Such brightness on the end face is not only unsightly, but also significantly reduces the visibility of the intended display.

Therefore, conventionally, a holder a as shown in FIG. 1 is used to provide an appropriate distance between the stacked display boards and to cover the edges of the display boards.

That is, a large number of receiving structures C having a certain depth are formed in the holder a, and each display plate b (only one is shown in the figure) is placed in the groove C.

) are fitted, thereby maintaining the distance between each display board and covering the end edge d of each display board.

However, for those that use this holder a,
The disadvantage is that the shape of the holder a is complicated, its moldability is poor, and the manufacturing cost is therefore high.

Also, regarding the assembly of the entire display device, fit each display board into the receiving groove C of the holder a and press the button, and then place the light receiving part e of the display board at a predetermined location on the body. There is a problem in that the assembly of the display board is extremely difficult.

Furthermore, since the holder a is a molded product, the distance f between the grooves C must be greater than a certain value, and as a result, the distance between each display board in the stacked state becomes larger than necessary. (It is fine as long as the display boards are not in close contact with each other.

), there is also the problem that the display does not look flat and the attenuation of the display light on the rear side increases.

In addition, in such a multiple display device, when the light source corresponding to the - display board is selectively turned on, the light from the light source may leak and enter the other display boards, or the inside of the body may become dimly bright. Doing so will reduce visibility and make it look bad.

Therefore, it is necessary to block light between the light sources.

Therefore, conventionally, as shown in FIG. 2, a light source arrangement part g is provided on the body (not shown), a slit h is formed in this light source arrangement part g, and a light receiving part e of the display panel is connected from the slit h. Insert it into the light source arrangement part g, and then insert it into the light source arrangement part g.
The light source bulb i was placed inside the lamp.

With such a structure, when assembling the device, it is necessary to insert the light-receiving parts (e) of the many stacked display boards into the light-receiving parts (h) of the light source arrangement part (g), making it difficult to assemble the display boards. This is extremely poor, and strict dimensional accuracy is required for the display board, slits, etc., which increases molding costs such as the total mold cost.

Also, the distance j from the filament center of light bulb i at the indicated head weight
It has the disadvantage that it becomes long and thus requires a greater depth of the device.

Furthermore, since the bending angle α of the display panel becomes thicker, there is also the disadvantage that the light transmission efficiency at this bent portion becomes poor and the display becomes dark.

Therefore, as shown in Figure 3, it may be possible to use a display board that does not have a bent part, but even with such a structure, strict dimensional accuracy is required, and assembly of the display board is difficult. This is still bad, and furthermore, the front surface of the light source placement part g provided on the body protrudes ahead of the display surface, and therefore the display surface is pushed back by a distance l. It has the disadvantage that both appearance and visibility are poor.

Therefore, the present invention aims to provide a new multi-display device that can reduce the depth of the device, improve ease of assembly, and further improve the efficiency of light source use. The part and the light-receiving part, which is located at the edge of the main part and bent backward at a gentle angle with respect to the main part, are integrally formed of a transparent material, and the back of the main part is dotted with characters, symbols, etc. Time,
A plurality of display boards engraved with lines etc., a plurality of light-shielding sheets arranged between each display board and in front of the display board in the front row, and a body in which the display boards and light-shielding sheets are laminated and a receiver is placed. , and a plurality of light source bulbs held in the body, the light emitting parts of which are placed opposite to the respective light receiving parts of the display board,
The position of the light receiving part of each display board is at a different position when viewed from the front when all the display boards are stacked, and the light source placement part of the body penetrates the body from front to back and receives the light emitting part of the light bulb. has a receiving hole, the body is formed with a mounting plane portion on which at least a part of each of the display boards is mounted, and each of the plurality of light shielding sheets has a window;
Each light-shielding sheet is configured so that the display body located behind the light-shielding sheet faces forward, and at least a portion of each light-shielding sheet is placed on the corresponding flat surface. It is characterized by what it did.

Hereinafter, details of the multiple display device of the present invention will be explained according to embodiments shown in the accompanying drawings.

In the illustrated embodiment, the multiple display device of the present invention is applied to a warning display device installed in the driver's cab of an automobile.

1 is a display board, and in this example, 1, 4 at ~141
A number of display boards are used.

The display board 1 is made of a transparent material, such as acrylic resin,
A flat main portion 2 and a light receiving portion 3 are integrally formed.

Indicators 4 such as characters and symbols are formed on the back surface of the main portion 2 by stipples or lines.

The light receiving part 3 is formed at the edge of the main part 2, is bent rearward at a gentle angle with respect to the main part 2, and has a notch 5 formed at its rear end.

In other words, it has a shape that looks like part of a pot.
The bottom part is formed as if it were hollowed out.

The formation positions of the light-receiving parts 3□-34 of each display board 1, -14 are different from each other so that when the display boards 1-14 are stacked as described later, they do not overlap when viewed from the front. It is in good position.

6 is a case-like body with an open front, and usually
Molded from synthetic resin.

The body 6 has a number of light source arrangement parts 7 corresponding to the number of display boards 1.
□ to 74 are formed.

In this embodiment, the light source arrangement parts 7, - 74 are arranged biased towards the lower part inside the body 6.

The light source placement portion 7 penetrates the body 6 in the front and back and is provided with a light bulb 80 for the light source.
It consists of a light bulb receiving hole 10 in which the light emitting part 9 is received and a slope 11 in which the light receiving part 3 of the display board 1 is placed and whose rear end is continuous to an intermediate position of the light bulb receiving hole 10.

The slope 11 is open toward the front, and therefore, the light bulb receiving hole 10 is shaped in half along the axial direction from the portion continuous with the slope 11 in front.

Further, in the body 6, a slope extends in the axial direction (front-rear direction) of the body, continuing from the front end of the above-mentioned slope.

) The mounting plane portions 12 are formed in a number corresponding to the number of display boards 1 that are substantially perpendicular to the display panel 1 .

Each of the above-mentioned mounting plane parts 12□ to 124 has a different position in the front-rear direction, and 10° to 104 of the above-mentioned light bulb receiving holes 10 are located directly in front of the mounting plane parts 12□ to 123, respectively. That is, 10° ends at 12, 103 ends at 12°, and 104 ends at 123.

Further, another mounting plane part 13 is formed at the front end of the light bulb receiving hole 10□ in the frontmost part and continuing in a direction substantially perpendicular thereto.

Reference numeral 14 denotes a stepped portion formed inside the opening edge of the body 6, and is located on the same plane as the mounting plane portion 13 at the frontmost portion.

15 is a printed circuit board fixed to the back side of the body 6;
Insertion holes 16□-164 are bored through which the light-emitting parts 91-94 of the light source bulbs 8□-84 are inserted.

Reference numeral 17 denotes a socket, and the light bulb 8 is attached to the printed circuit board 15 through this socket 17.The printed circuit board 15 is then attached to the body 6, so that each light bulb 80 and the light emitting part 9 receive their corresponding light bulbs. It is located within the hole 10 .

181-184 are light-shielding sheets made of light-shielding paper, film, etc.
Windows 19, - 194 are formed to allow the windows to pass through.

The condition 19 is arranged such that the display body 4 of the display board 1 arranged behind the light shielding sheet 18 can be faced forward, that is, the window 19□ is arranged so that the display bodies 41 to 44
The size and shape of the window 192 are determined so that the display bodies 4° to 44 can be viewed forward, the window 193 is such that the display bodies 43 and 44 can be viewed forward, and the window 194 is such that the display body 44 can be viewed forward.

Thus, each of the display panels 11 to 14 is stacked in the body 6 with the corresponding light shielding sheets 18 and 184 stacked on the front surface thereof.

First, the display board 14 is placed at the innermost part of the body 6.

At this time, a black or other dark-colored backsheet 20 is placed on the placement plane portion 124, and the display board 14 is placed in front of the backsheet 20.

This back sheet 20 has a light color compared to the body 6.
For example, if it is made of a white material, the background may be too conspicuous and the visibility of the display body 4 may be poor, so this is used to prevent such inconvenience.

Therefore, if the body 6 itself is dark colored, the back sheet 20 is not necessary.

Incidentally, when the body 6 is formed in a bright color, the inner surface of the light bulb receiving hole 10 acts like a reflective surface and the light from the light bulb 8 can be used effectively.

The slope 1 of the light source arrangement section 74 is attached to the back sheet 20.
A notch 21 is formed for allowing the holder 14 to move forward.

Therefore, the display board 1 stacked on the front side of the back sheet 20
The light receiving section 34 of No. 4 is placed on the slope 114 and the notch 54 is located on the slope 114.
is the light bulb 840 placed in the light bulb receiving hole 104
They are arranged to surround 4.

Next, a light shielding sheet 184 is placed on the front surface of the display board 14.

A portion 184' of the light-shielding sheet 184 is placed on the placing flat portion 123.

A notch 22 is formed in this light shielding sheet 184,
The light source arrangement portions 70, 72, and 73 are arranged to face forward from the notches 22 of the light source.

In addition, the light source arrangement portion 7 is located at the light shielding sheet 1840 portion 184'.
4 is now covered.

The display board 13 is stacked on the front surface of the light-shielding sheet 184, and its light receiving section 33 is placed on the slope 113.
A light bulb 8 in which the notch 53 of No. 3 is placed in the light bulb receiving hole 103.
30 are arranged so as to surround the light emitting section 93.

A light shielding sheet 183 is placed on the front surface of the display board 13.

A cutout 23 is formed in the light shielding sheet 183, and the light source placement portion 7172 is exposed forward from the cutout 23, and the other portion 183' covers the front side of the light source placement portion 73, 74. A portion of 183' is placed on the placing flat portion 12°.

The display board 12 is placed on the front side of the light-shielding sheet 183, and its light receiving portion 3° is placed on the slope 11°.

The notch 5° of the light receiving portion 32 is arranged so as to surround the light emitting portion 92 of the light bulb 8° disposed within the light bulb receiving hole 10°.

A light shielding sheet 182 is placed on the front side of the display board 12 in an overlapping manner.

A notch 24 is formed in the light-shielding sheet 182, and the light source placement portion 7□ extends forward from the notch 24, and the other portion 18°' covers the front side of the light source placement portion 72, 73, and 740. Also, a portion of the portion 182' is placed on the placement plane 12.

The display board 11 is stacked on the front side of the light-shielding sheet 18□, and its light receiving section 31 is mounted on the slope 111.

The notch 5 of the light receiving part 31 is arranged so as to surround the light bulb 8□0 and the light emitting part 9□ arranged in the light bulb receiving hole 10□.

Finally, a light shielding sheet 18 is placed on the front side of the display board 11 in an overlapping manner.

The portions 18,' of the light-shielding sheet 181 cover the front sides of all the light source placement portions 7□-T4.

The peripheral edge of the light-shielding sheet 18 is the mounting plane part 13 and the stepped part 1.
4.

This completes the stacking arrangement of the display panel 1 and the light-shielding sheet 18 in the body 6, but in the illustrated embodiment, a filter 25 and a front lens 26 are further added.

The filter 25 is arranged in front of the light shielding filter 18 and is used to color the brightness of the display 4, for example, a red filter is used.

The surface lens 26 is for enhancing the contrast between the brightness of the display body 4 and the surroundings and improving the visibility, and for example, a smoked lens is used.

In the multiple display device as described above, when the - of the light source bulb 8 is selectively turned on, the light is transmitted from the five notches provided in the light receiving section 3 of the display panel 1 corresponding to the bulb to the display panel. 1, propagates through the thickness of the display board 1 due to the edge light effect, and is reflected forward by the display body 4, so that the display body 4 appears to be shining when viewed from the front. That will happen.

As described above, in the multiple display device of the present invention, each display board is arranged with a space between each display board using a light-shielding sheet, so that light leakage between the display boards is prevented, and necessary The depth of the device can be kept to the necessary minimum without creating a larger gap.

In addition, since the light receiving portion of the display board is bent at a gentle angle with respect to the main portion, the light transmission efficiency at the bent portion does not decrease, and the light from the light source can be used effectively.

Furthermore, the device is assembled by simply inserting and arranging the display board and light-shielding sheet from the back into the body in an odd order, which is extremely simple compared to conventional devices, and the materials used are also easy to assemble. However, it has many advantages, such as not being as complicated as conventional ones and contributing to cost reduction.

In the multiple display device of the present invention, if the back surface 27 of the light-shielding sheet 18 is made of a glossy white or other highly reflective surface as shown in FIG. can reflect the emitted light and return it to the display board, further promoting the effective use of light.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one means of light shielding of a display board in a conventional multiple display device, and FIGS. 2 and 3 are cross-sectional views showing examples of the relationship between the light source section and the display board in the conventional multiple display device, respectively. , FIG. 4 and FIG. 5 show an example of the implementation of the multiple display device of the present invention, FIG. 4 is an exploded perspective view, FIG. 5 is a vertical sectional view of the main part, and FIG. 6 is a light shielding diagram of the multiple display device of the present invention. FIG. 7 is a sectional view of a main part showing a modified example of the sheet. Explanation of symbols, 1...Display board, 2...Main part, 3...Light receiving section, 4...Display body, 6
...Body, 7...Light source arrangement section, 8.
...Light bulb, 9...Light emitting part, 10...
・・Light bulb receiving hole, 12・・・・Placement flat part, 13・
... Placing flat part, 18... Light shielding sheet,
19...window.

Claims (1)

[Scope of utility model registration request] A flat main part and a light emitting part located at the edge of the main part and bent backward at a gentle angle with respect to the main part are integrally formed of a transparent material, and the back side of the main part has letters, symbols, etc. A plurality of display boards with display elements engraved with stipples, lines, etc., a plurality of light-shielding sheets arranged between each display board and in front of the display board in the front row, and a lamination of the display boards and light-shielding sheets. The light receiving part of each display board should be positioned so that all the display boards are laminated together. The light source arrangement part of the body has a light bulb receiving hole that penetrates the body in the front and back and receives the light emitting part of the light bulb, and the body has each of the above-mentioned indications. A mounting plane part is formed on which at least a part of the board is placed, and each of the plurality of light-shielding sheets has a window, and each of the plurality of light-shielding sheets has a state in which a display body located behind the light-shielding sheet is facing forward. 1. A multiple display device, characterized in that it is configured to be foldable, and at least a portion of each light-emitting sheet is placed on a corresponding placement plane.