JPH0793775B2 - Illuminated display device - Google Patents

Description

Detailed Description of the Invention

[0001]

[Industrial application] For display devices such as switchboards and display panels ,
2. Description of the Related Art Illuminated display devices that perform illuminated display using a light source such as a light emitting diode are known. The present invention relates to the above-mentioned illuminated display device, and more particularly to an illuminated display device capable of displaying a desired symbol or figure as an illuminated surface by a relatively large number of light sources.

[0002]

BACKGROUND OF THE INVENTION switchboard or display board, and referred the tessellated panels, the cross-cut by a partition wall provided in the vertical and horizontal fixed interval
The square path 3 of a metal grid formed in a grid pattern, there is what constitutes the board by mounting the Viewing device or blind-like tiles. In this mosaic type panel , when viewing a display device that illuminates a figure or the like, conventionally, as shown in FIG. 9, the surface of a blind tile B that is detachably attached to a grid A is shown.
In applying Viewing as a through-hole C, with fitting the acrylic plate D (illuminating plate) having a light-transmitting holes C, mounted an illumination unit F for illuminating in small number of light emitting diodes E behind tile B also the are known you.

There is also known an illumination unit in which a portion corresponding to the tile B in FIG. 9 and a casing of the illumination unit F are integrally molded, and an engagement piece for engaging and disengaging with the grid is molded in this casing. The present inventors have intended distance size of a light source and illuminating plate such as a light emitting diode, light is trying to place a transparent light guide member to the light source and the illumination plates so as not to attenuate.

[0004] As shown in FIG. 10, a number of light emitting diode E on one of the substrate G, is also known a high-density illuminating display device for placing the E at a high density. The conventional high-density illuminated display device is not generally used for surface illumination, but is used for displaying characters by combining point light sources that emit light.

[0005]

In the conventional illuminated display device shown in FIG. 9, it is necessary to machine the tile B with a display image as a through hole . In addition, a through-hole is used for illuminated display.
Only pictographic portion is illuminated, pictographic other portions of the through hole
Not illuminated. Therefore, the parts other than the through-holes can be illuminated in other colors, or can be illuminated in the same color and the entire surface can be illuminated with the same color.
It was not possible to display such . Also, FIG.
In the conventional high-density illuminating display device shown in 0, because the display is not in the display caused by the surface illuminated, with it is difficult to display a complicated shape or symbols, clearly <br/> vision sure display itself It had the drawback of being difficult.

In view of the above-mentioned drawbacks of the prior art, the present invention clearly displays a figure or symbol as a surface-illuminated display surface.
To get an illuminated display device that can also display hierarchies
Can illuminate both the inside and outside of the
Illuminates various display modes and the inside and outside of hieroglyphics in the same color.
It is an object of the present invention to provide an illuminated display device capable of performing full-surface illumination in a state where a hieroglyphic display cannot be visually recognized.

[0007]

An illuminated display device according to the present invention.
Location places the illuminating plate 7 having translucency at regular intervals in front of the plurality of light sources. Between the light source and the illumination plate 7, one end is a light source, and the other end is a transparent light guide in a state of approaching the illumination plate 7.
The member 8 is arranged, a desired display such as symbols and pictographic The light guide member 8, is bored with a slit-shaped kerf 12. A plurality of light sources, for example, light emitting diodes, can be turned on by selecting one that faces the inner portion of the display shape of the light guide member 8 surrounded by the cut groove 12 and one that faces the outer portion .
It

The slit-shaped cut groove 12 divides the light guide member 8, that is, the outer shape of the light guide member is a desired display shape.
The formed male light guide member 8a and a through hole having a desired display shape
And a female light guide member 8b in which
A male light guide member 8a is fitted in the through hole of 8b, and a plurality of light sources are opposed to the male light guide member 8a and a female light guide portion.
Ru can allow lighting by selecting as opposed to wood 8b.

[0009]

The function of the cut groove 12 of the light guide member 8 among the plurality of light sources is as follows.
When turning on the light source facing the inward of the display shape surrounded me, side <br/> kerf 12 of the light guide member 8 as shown in FIG. 4 is a reflecting surface, the illuminating plate 7 Only the inner part of the display shape
Is GaTeru light display. At this time, the light of the light source that faces the inside of the display shape of the light guide member 8 does not leak to the outside of the display shape, so that the display shape appears clearly on the illumination plate 7 . When the light source facing the outside of the display shape of the light guide member 8 is turned on in the same color as the inside light source, the entire surface of the illumination plate 7 is illuminated in the same color, and the display shape disappears . Also as a light source
It has multiple types of light sources that emit different colors.
When the light source that faces the outside of the display shape of the light guide member 8 and the light source that faces the inside are illuminated with different colors , the inside and outside of the display are color-coded and illuminated. Male light guide member
In the case of the optical member 8a and the female light guide member 8b,
The light source facing the mold light guide member 8a and the female light guide member 8b.
The same operation as above can be performed by turning on the light source facing the light source.
It

[0010]

Embodiments of the illuminated display device of the present invention will be described below with reference to the accompanying drawings. FIG. 2 shows an embodiment of a mosaic type panel, which uses partition walls provided at regular intervals in the vertical and horizontal directions.
A grid of metal grids 2 formed in a grid pattern
The illumination display device 1 is detachably attached to the paths 3 and 3. Grayed <br/> lid 2 illuminated display device 1 is attached to is for illuminating displays symbols or pictographs of Nozomu Tokoro, outline <br/> of one illumination display device, the grid 2 of the square path 3 2 pitches vertically and horizontally, that is, 4
A size corresponding to the size of each of the hollows 3 is shown, and the state in which they are arranged without a gap is illustrated.

[0011] irradiation optical display device 1, as shown in FIGS. 1 and 3, a mount 4, a substrate 5 which is mounted on the mount 4, the reflector 6 and the reflector 6 is mounted on the substrate 5
Constituted by an illuminating plate 7 having a light-transmitting mounted in freely state detachable to the front end of the inside reflector 6 houses a transparent light guide member 8 having the same thickness as the depth of the reflector 6 . Illuminating plate 7 to be mounted on the front end is an open end of the reflector 6 is configured to detachably by recess-projection fitting, to
It has a rough surface finish that allows light to diffuse like frosted glass .
In the illustrated embodiment , an insulating mat 9 having excellent thermal conductivity is interposed between the mount 4 and the substrate 5.

On the surface of the substrate 5 mounted on the mount 4,
A large number of light emitting diodes 10 and 10 are arranged in a matrix. It is preferable that the light emitting diodes 10 arranged in a matrix form employ a light emitting diode chip that is capable of selecting a plurality of colors, for example, red and blue, to emit light at one position. The reflector 6 mounted on the substrate 5 on which the light emitting diodes are arranged is
When it is mounted on the board by making it the same size as the board 5
At the position corresponding to the individual light emitting diodes,
A through hole 11 is formed .

A light guide member 8 housed in the reflector 6.
Since its thickness matches the depth inside the reflector 6, it is housed so that one end surface abuts on the inner bottom surface of the reflector and the other end surface abuts on the illumination plate 7, as shown in FIG.
The light guide member 8 to be accommodated in the reflector 6, the back side in contact with the inner bottom surface of the reflector 6, from the end face facing the Sunawa sporadic light diode, display type such as symbols or pictographs
Jo and is engraved as a slit-shaped notch 12 having a depth leaving a slight thickness on the surface side.

[0014] To engraved kerf 12 in the light guide member 8, for example, by laser processing in such a smooth side of the kerf 12 is a light reflection surface, and switching the width of the groove is in the extremely narrow It can be processed. Very narrow kerf width
As a result, as shown in FIG. 3, the kerf passes through the intermediate position between the light emitting diodes and the light emitting diodes which are adjacent to each other as much as possible.
You can When the kerf 12 passes directly above one light emitting diode , the light emitted from the light emitting diode
Illuminates both the inside and outside of the kerf, resulting in a sharper display.
Will be damaged. Therefore, the kerf 12 is directly above
Light-emitting diodes that pass through should not be illuminated .

In the illuminated display device according to the present invention, the light emitting diode is used.
When the switch is turned on, the kerf
Both sides of the groove become light-reflecting surfaces, and the light inside the kerf is outward.
In addition, the light from the outside does not travel inward . For example, the light emitting diode chips 10a and 10b that emit light of different colors are arranged at one light emitting position, and the light emitting diode chip 10a is located in the inner part of the display shape surrounded by the cut groove 12 and the light emitting diode chip 10b is located in the outer part. When emitting light, the inside of the display shape is the light emitting diode chip
10a color, the outside of the display shape is the LED chip
It is illuminated and displayed in the color of the display 10b.

[0016] In the embodiment shown in FIG. 3, the surface of the front surface of the light guide member 8 and the smooth surface, although engraved cut grooves 12 leaving a wall thickness of small dimensions from the surface, in FIG. 5 As shown, a shallow groove 13 may be formed on the front surface so as to face the cut groove 12 from the back surface. By doing so, the contour of the display shape appearing on the illumination plate becomes clearer.

The cut groove 12 penetrates the light guide member 8 , in other words, as shown in FIGS. 6 and 7 , the outer shape is a desired display shape.
Shaped male light guide member 8a and a desired display shape
The light guide member may be configured with the female light guide member 8b having a through hole . In this case, for a more reliable reflection surface an inner circumferential surface of the outer peripheral surface and the female guide member 8b of the male guide members 8a, Ru possible der applying silver mirror processing, such as chromium deposition.

The light guide member 8 needs to be mounted in an accurate positional relationship with a plurality of light sources in consideration of the display shape. Therefore, in the illustrated embodiment , the light guide member 8 is used for alignment.
The projections 14 and 14 are provided on the back surface of the reflector 6 , and the projections 14 and 14 are fitted into the small holes 15 formed in the inner bottom surface of the reflector 6.

The light source for facing the light guide member 8, as much as possible
Many light sources, for example, to use a large number of illumination substrate are arranged at a high density light-emitting diode on a substrate is preferred in order to obtain a bright display surface without illumination unevenness. However, it is not always the case that the light sources are densely arranged.
There need not, it can be carried out with light sources positioned inwardly of at least the display shape, the present invention as long as it can be turned to distinguish a light source located outside.

[0020] To obtain a bright Table示面, utilizing a substrate having a light emitting diode arranged at a high density, it becomes large as a whole heat generated from the light emitting diodes, the internal display surface and illuminating the display device becomes high there is a possibility. Therefore , in the illustrated embodiment, the mounting base 4 is integrally molded with a metal material that is a good conductor of heat , and the generated heat causes the legs to come into contact with each other from the pedestal portion 4a and the leg portions 4b of the mounting base 4. transmitted to the metal grid 2 are, so that the heat inside the Viewing device is not Mora basket. Further, in the illustrated embodiment , the present invention is applied to an illumination display device which is detachable so that it can be attached to a mosaic type panel.
While shows an example of application, the present invention is Ru can also be applied to those as screwed Other illumination display device, for example a flat board.

Next, an example of a display mode by the illuminated display device of the present invention will be described. 2, the top of the panel
The illuminated display device placed in the
X, whether or not this illuminated display device displays
Can be selected. Placed in the middle and bottom of the panel
With the illuminated display device, you can only select whether or not to display.
You can change the display like the display X ₁ and X _2.
It was done so.

To provide an illuminated display device capable of display change
A plurality of enclosed Murrell by the kerf 12 as shown in FIG. 8
Region, for example by blinking control of the light source facing the respective three areas Y ₁ to Y _3, it is possible to display changes. In the case of FIG. 8, an upward arrow is displayed by the combination of the regions Y ₁ and Y ₂ , and a downward arrow is displayed by the combination of the regions Y ₁ and Y ₃ . Also, at the position of one light source,
Provide two or more types of light sources that light in different colors
And not only changing the display and changing the display color, but also the display
Complex display such as hieroglyphic changes, color changes and their combinations
You can make changes.

[0023]

The illuminated display device of the present invention according to claims 1 and 2
According to the arrangement, it is engraved on the tile like a conventional illuminated display device.
The illuminated display is not the only illuminated one, it is a plane
Draw a hieroglyph on the surface of the illumination plate as surface illumination.
Can be issued. Display to be portrayed on the front surface of the illuminating plate
Depends on the shape of the light guide member's cut groove and the male and female light guide members.
The light inside the display shape of the light guide member and the light outside
Don't get me wrong. Therefore, the display that matches the shape of the light guide member
Vividly drawn on the illumination plate. Furthermore, of the light guide member
If the display shape is a combination of multiple shapes, which shape
Depending on the selection and combination of lighting the light source facing
Therefore, complicated display change can be easily performed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an example of an illuminated display device of the present invention,

FIG. 2 is a front view of only a part of a mosaic type panel to which an illuminated display device is attached,

FIG. 3 is a vertical cross-sectional view of the illumination display device mounted on a grid,

FIG. 4 is a sectional view showing an optical path of light from a light source ,

FIG. 5 is a vertical cross-sectional view showing an embodiment of an illuminated display device in which a groove is formed on the surface of a light guide member ,

FIG. 6 is a light guide section including a male light guide member and a female light guide member.
Exploded perspective view showing an example of the material ,

FIG. 7 is a light guide section including a male light guide member and a female light guide member.
Sectional view of an illuminated display device that uses materials

[FIG. 8] A plurality of display changes can be made depending on the combination of illumination areas.
A rear view showing an example of the light guide member

FIG. 9 is an exploded perspective view showing an example of a conventional illuminated display device,

FIG. 10: High density using many conventional light emitting diodes
The side view which shows an example of a degree illumination display device.

[Explanation of symbols]

1 ... Illumination display device, 2 ... Grid, 3 ... Masu, 4
... Mounting base, 5 ... Substrate, 6 ... Reflector, 7 ... Illumination plate, 8 ... Light guide member , 8a ... Male light guide member , 8b
... Female light guide member , 10 ... Light emitting diode, 11 ... Through hole, 12 ... Cut groove, 13 ... Recessed groove.

Claims (2)

[Claims] 1. An illuminating display device comprising an illuminating plate for receiving light from a plurality of light sources, the illuminating plate receiving light from the light sources, wherein one end face is the light source and the other end face is illuminating between the light source and the illuminating plate. A transparent light guide member 8 is arranged close to the plate, and a display shape is formed on the light guide member 8 with slit-shaped cut grooves 12 .
Engraved, a plurality of light sources is surrounded by kerfs 12 Rushirubeko unit
Illuminating display device which as opposed to inner part of the display shape of the timber 8, that which enables lighting to select the one that faces the outer portion, wherein. 2. An illuminating display device comprising an illuminating plate for receiving light from a plurality of light sources, the illuminating plate receiving light from the light sources, the illuminating plate having one end face and the other end face illuminated between the light source and the illuminating plate. A transparent light guide member is arranged close to the plate, and the light guide member is a male light guide unit whose outer shape is formed in a display shape.
Material 8a and female light guide member 8b having a display-shaped through hole
And a male light guide member is provided in the through hole of the female light guide member 8b.
Fit the 8a, a plurality of light sources is male guide as opposed to members 8a, female guide member 8b illuminated display device comprising also the fact that the illuminable by selecting opposed to.