JPS5934933Y2 - display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transparent sign-type display device, and more particularly to a display device that can extend the life of the illumination source and facilitate assembly.

In general, a transparent sign-type display device has an illumination source placed behind the display surface of a display panel that has a display surface in which the portion corresponding to the characters or figures to be displayed is formed of a translucent material. Characters or figures are displayed by transmitting the light emitted from the translucent member through the translucent member.

In this type of transparent sign-type display device, when characters or figures to be displayed are displayed locally in sequence or locally changed colors, the above-mentioned translucency is usually used. A plurality of illumination sources are arranged behind the member along this translucent member, and both sides where the illumination sources are arranged are covered with a shingle plate, and each of the above-mentioned illumination sources can be blinked as desired to achieve a distant purpose. I try to do that.

By the way, in a multi-light display device in which a plurality of illumination sources are arranged behind a translucent member and along the translucent member as described above, the illumination source is usually an incandescent bulb or a colored lamp. Incandescent light bulbs are used, but incandescent light bulbs generally have a relatively short lifespan, making maintenance difficult.

Further, since incandescent light bulbs require sockets, it takes a long time to install the sockets, and there is also the problem that the overall cost is high.

Additionally, sockets are usually relatively large, making it difficult to position the bulb accurately along the marks, for example when creating a desired curved display, which can result in reduced brightness, for example. There were also problems such as local differences.

Furthermore, when an incandescent light bulb is used as a light source, there is a lower limit to the size of the light bulb, so there is a problem that small characters and small figures cannot be displayed in a multi-lighting method.

This idea was made in view of these circumstances,
The purpose is to provide a multi-light display device in the form of a transparent sign that is easy to manufacture and maintain, and can display small displays and any curved line well.

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

The figure shows an example in which this invention is applied to a road control display panel.

In Figure 1, 1 in the figure indicates a display panel, and this display panel 1
is installed via a support 2 or directly on the floor of the monitoring center.

As shown in FIG. 2, grooves 12 corresponding to roads P to be monitored are provided on the display surface 11 of the display panel 1 in the same manner as the roads are provided.

Step portions 13a are provided at both edges of the opening of the groove 12, respectively.
, 13b are provided, and these stepped portions 13a, 13
A transparent or semi-transparent light-transmitting plate 14 is fitted into the groove 12 so as to cover the opening of the groove 12.

Therefore, the translucent plate 14 is provided so as to be able to represent the road P.

Note that the translucent plate 14 has the above-mentioned stepped portions 13a and 13b.
is fixed with adhesive or screws.

As shown in FIGS. 3 and 4, a plurality of comb tooth-shaped fixing plates 15 are inserted into the groove 12 at appropriate intervals so as to close the inside of the groove 12.

These comb tooth-shaped fixing plates 15 are inserted (fitted) so as to be perpendicular to the center line of the groove 12 .

As shown in FIGS. 2 and 3, each of the comb tooth-shaped fixing plates 15 has a relatively wide notch 16 formed in its center, and a relatively wide notch 16 is formed at the center of the notch 16. Narrow notches 17a, 17b and 17c, 17d are formed on both sides, respectively.

Each of the comb tooth-shaped fixing plates 15 is inserted into the groove 12 with the notch side thereof facing the opening side of the groove 12.

Therefore, each notch 17a of each comb tooth-shaped fixing plate 15 is
, 17b, 17c, and 17d respectively correspond to two pairs of flexible strip-shaped printed wiring boards 1.
8 are inserted and fixed in a relationship perpendicular to the translucent plate 14, and a band-shaped partition plate 19 having flexibility corresponding to the median strip is inserted into each cut 16, and the free end of the partition plate 19 is inserted into each notch 16. Each comb-shaped fixing plate 15 is fixed in the groove 12 by being pressed by the inner surface of the translucent plate 14 on its side.

A plurality of printed wirings 20 are provided on one or both sides of the printed wiring board 18 along the longitudinal direction.

In addition, a plurality of light emitting diodes 21 are arranged and fixed at equal intervals on the opposing surfaces of each of the printed wiring boards 18 forming a pair, respectively, along the side edges located on the translucent board 14 side. - These light emitting diodes 21 are electrically connected to the printed wiring 20 in a predetermined relationship, respectively.

Note that the printed wiring 20 is connected to a lighting control circuit via, for example, a plug/jack type connector (not shown).

This lighting control circuit is installed at a position corresponding to the section of the road where there is extreme congestion based on various information transmitted from devices installed at checkpoints on each road, such as the number and speed of passing vehicles. For example, the light emitting diodes 21 provided at positions corresponding to sections where moderate traffic congestion is caused are made to blink.
1 is lit continuously, and in sections where traffic is relatively smooth, it is controlled so that it is not lit or a light emitting diode of a different color from the former is lit.

Of course, these controls are performed for each up and down lane.

With such a configuration, the traffic congestion situation of the roads within the jurisdiction can be displayed on the display surface 11 of the display panel 1.

In addition, by disposing a plurality of light emitting diodes on opposing surfaces of the printed wiring boards that form a pair, the light emitted from each light emitting diode is reflected between each printed wiring board, and the reflected light is reflected from the light emitting diode. Since the light is superimposed on the light directly generated by the light and illuminates the translucent plate from the back, the illuminance of the display surface can be made more uniform.

This effect is extremely useful in clarifying the display state when display is performed using surface illumination as in the present invention.

In this case, since the light emitting diode 21 is used as the illumination source, it can be used semi-permanently and maintenance can be facilitated.

Furthermore, light emitting diodes 21 are used as illumination sources, and these light emitting diodes 21 are directly fixed along one side edge of a flexible strip-shaped printed wiring board 18 along this side edge, so that the printed wiring board 18 can be displayed. The light source, that is, the light emitting diode 21, is fixed by being inserted into the notches of a plurality of comb-shaped fixing plates 15 fixed along the path in a direction perpendicular to the translucent plate 14. Fixation can be made very easy.

Furthermore, the printed circuit board 18 to which the light emitting diode 21 is directly fixed is made flexible, and the board 18 is inserted and fixed into the notches of the comb-shaped fixing plate 15 in the form described above, so that the display path can be changed. Regardless of the curvature, the light-emitting diodes 21 can be placed along the display path precisely by using a simple strip-shaped printed circuit board, which facilitates the production of the illumination system and makes it easier to incorporate the illumination system. It is also possible to facilitate the

Further, since power is supplied to each light emitting diode 21 using printed wiring, there is an advantage that the wiring system can be simplified and the entire illumination system can be standardized.

Furthermore, since light emitting diodes can essentially be made sufficiently compact, they can be assembled without any problem even in the case of a small display.

The above-mentioned embodiment is an example in which this invention is applied to road control display manufacturing, but this invention is not limited to this, and can be applied to other transparent sign-shaped displays that adopt a multi-lighting system. Applicable to all devices.

Furthermore, light emitting diodes that emit colors such as red, blue, and green may be used depending on the display object, and these may be turned on to match the display object.

As described in detail above, according to this invention, it is possible to provide a display device that is easy to maintain and inspect and assemble, and that can accurately display a display that meets the purpose.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the external appearance of a display device according to an embodiment of the invention, Fig. 2 is a partial perspective view showing a partially cut away display surface portion of the embodiment, and Fig. 3 is a display in the embodiment. A cross-sectional view of the device, FIG. 4 is a cross-sectional view taken along the line A--A in FIG. 3. 1...Display panel, 11...Display surface, 12
...Groove, 14...Translucent plate, 15...
...Comb tooth-shaped fixed plate, 16.17a to 17d...
...Notch, 18...Printed wiring board, 20...
...Printed wiring, 21...Light emitting diode.

Claims (1)

[Scope of utility model registration request] A display panel having a display surface in which the portion corresponding to the characters or figures to be displayed is formed of a semi-transparent translucent material, and printed wiring on the surface arranged at the rear of the display surface so as to be orthogonal to the display surface. a pair of strip-shaped flexible printed wiring boards parallel to each other having The display panel has a plurality of light emitting diodes each electrically connected to the printed wiring, and a plurality of notches for inserting and fixing a side edge of each strip-shaped flexible printed wiring board on the side opposite to the display panel. 1. A display device comprising a plurality of fixing plates arranged at arbitrary intervals along a display surface to fix and hold each of the strip-shaped flexible printed wiring boards.