JPS5928448Y2 - Transparent frame unit of light emitting display device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a translucent frame unit forming a display section of a mosaic display board type light emitting display device used in a centralized control system for road traffic information, chemical plants, power supply status, etc.

Light emitting display devices are usually used to display information in centralized management systems, among others, mosaic display devices are known.

A mosaic display panel type light emitting display device has a large number of transparent frames fitted in an aligned arrangement into a lattice block made of metal die-casting such as zinc or aluminum, and information is transmitted to a predetermined transparent frame in response to a signal. When the inside emits light, the filter on the front of the translucent filter shines and displays.

As for the light emitting format inside the transparent frame, a large light source lamp with IOW, 20W or more (W) is kept on at all times, and a shutter is provided inside the transparent frame. Open the shutter when receiving a signal,
One type allows light to reach the filter on the front, and the other type has a unique small miniature lamp built into each translucent frame, and when a signal is received, the built-in small miniature lamp lights up to display a luminescent display. There is.

The former is superior to the latter in terms of reliability and maintenance, as it allows you to check for breakage and other malfunctions at a glance, and there is no need to worry about the heat generated by the miniature lamp inside the translucent frame.

The inventors of the present invention first developed a shutter in which a thin plate-shaped shutter plate was glued and fixed to a non-magnetic metal shaft as a transparent frame unit of a light-emitting display device belonging to the former category, and a permanent magnet was further glued and fixed on the top surface of this shutter plate. We have devised a transparent frame unit consisting of a combination of a front frame with a built-in front frame and a rear frame that supports this front frame from the rear and can be freely latched onto a lattice block using a leaf spring.

Such a transparent frame unit is revolutionary as a device that has excellent advantages such as a simple structure, reliable light blocking operation by the shutter, and no cause for misreading or anxiety for those monitoring the light emitting display device. It is attracting a lot of attention.

Applications for light-emitting display devices used in such centralized control systems have been developed at a remarkable pace, including the above-mentioned road traffic conditions, water treatment in chemical plants, chemical system conditions, power supply conditions, telegraph and telephone usage conditions, as well as advertising, weather conditions, etc. There is a strong desire for its use in various display devices such as forecasts, elevators, and scoreboards.

Since the light emitting display device used in such a centralized management system has a size of 1.5 m (vertical) x 4 m (horizontal), 2 m (vertical) x lOm (horizontal) or more, the transparent frame to which it is fitted The number of units is in the thousands or even thousands per issue, and many of them are used continuously once installed, so it goes without saying that the reliability of the display is important for the purpose of use, as well as billboards, etc. When using at high places,
Once installed, it is desirable that the device cannot be replaced semi-permanently, and if a failure should occur, a huge amount of maintenance costs would be required, so durability is especially desired.

Therefore, while conducting various experimental studies, we found that the diameters range from 1rrrIr1 to 1mm as shown in FIG.
The shaft 31 is made of non-magnetic metal such as aluminum, stainless steel, etc., and has a thickness of 0.05 rrr!
ITrr from ri! The shutter 30, in which a nearly rectangular shutter plate 32 made of an opaque sheet material of non-magnetic metal or plastic of about n size and a permanent magnet 33 are fixed with adhesive, has the following new problems. I noticed that there was.

That is, since the shaft 31 and the shutter plate 32 are bonded with adhesive, (a) the shutter plate 32 relative to the axis center line of the shaft 31 is
It is difficult to ensure perpendicularity and flatness.

If this perpendicularity and flatness cannot be ensured, as will be explained later,
When the shutter 30 is swung around the shaft 31 within the front frame, the side edge 32a of the shutter plate 32 may get caught on the inner surface of the front frame, causing malfunction or causing the shutter plate to be damaged in the dark. When the 32 non-edges m2b come into contact with the buffer member, a gap is created in the contact surface, causing light leakage.

In Figure 7A, the state where the perpendicularity does not appear is shown by the two-dot chain line.

In addition, if the flatness is poor (either the right or left end of the shaft 31 rises relative to the shutter plate 32), the permanent magnet 33 adhesively fixed to the upper surface of the shutter plate 32 may be held in an inclined position when assembled into the front frame. As a result, the magnetic attraction force generated by the coil wound around the outer periphery of the front frame weakens, resulting in unstable operation.

In this light emitting display device, since it is desired to increase the display area within a limited light-transmitting space, it is desirable to design the device to obtain the maximum light-transmitting area. It is preferable to increase the clearance between the side edge 32a and the inner surface of the front frame as much as possible.

Φ) Also, due to the use of adhesive, the shutter plate 3
It is difficult to obtain the desired adhesion strength for the parts to be adhered in step 2, unless they are pre-treated with liquid, corona discharge, sandblasting, etc. Furthermore, after adhesion, a drying process at around 200°C for 2 hours is required, which requires a lot of man-hours. This results in increased costs.

<c> Furthermore, since the bonding is between the outer circumferential surface (circle) of the shaft 31 and the upper surface of the shutter plate 32, the bonding is done at the line contact area between the circle and the surface, so an effective bonding area cannot be obtained and the J impact It is unstable in terms of strength, and the shaft and shutter plate are likely to disassemble due to impact during use or inadvertent dropping during assembly.

This idea was created in view of the above-mentioned drawbacks, and it greatly improves reliability by improving the workability and impact resistance of the shutter, which is the central part of the translucent frame unit. The purpose of this invention is to provide an inexpensive transparent frame unit.

The gist of this invention to achieve the above object is as stated in the claims for utility model registration above.

Hereinafter, the light-transmitting frame unit of this invention will be described in detail by way of examples with reference to the drawings.

FIG. 1 shows an exploded perspective view of an embodiment of the transparent frame unit of this invention.

The transparent frame unit of this embodiment, which is composed of a combination of a front frame 1 and a rear body 2, has a shutter 3 built into the front frame 1, and a frame-shaped leaf spring 15 fitted into the rear frame 2. It is.

FIG. 2 is an enlarged longitudinal sectional side view of the assembled state of the front frame 1 and rear frame 2, and FIG. 3 is a front view of the state in which the shutter 3 is assembled into the front frame 1. has been done.

The shutter 3, which is a main part of this invention and is incorporated into the front frame 1, has a shaft portion 42 at both ends, as shown in an exploded perspective view in FIG. 6a and an assembled side view in the same figure. 42, and a plurality of engaging protrusions (two shown as 43 in the figure) projecting vertically upward from the flat plate part 41. The shutter shaft is integrally molded from a plastic material. 4 and an opaque plastic sheet (it may be made opaque by painting on a transparent sheet) or a non-magnetic metal material such as aluminum, brass, stainless steel, etc. with a thickness of about 0.05 to 0.5 yn. It is a thin plate, and is approximately rectangular, having a through hole portion 51 (the bulge of one through hole portion 51 is shown in the figure) that engages with the engaging protrusions 43, 43 of the shutter shaft 4 with a slight clearance. It consists of a shutter plate 5 of the same shape and a permanent magnet 6 having an engagement hole 61.61 that similarly engages with the engagement protrusion 43.43 of the shutter shaft 4 with a slight clearance. By engaging the mating projections 43.43 with the shutter plate 50 through-hole portions 51.51 and the engaging hole portions 61.61 of the permanent magnet 6, and by clipping the tips of the engaging projections 61, 61, the shutter shaft 4 , the shutter plate 5 and the permanent magnet 6 are integrated.

In addition, the caulked portion in FIG. 6 is indicated by reference numeral 1.

The shutter 3 integrally constructed in this way is attached to the front frame 1.
A pair of symmetrical bearing grooves 8 formed on the upper rear surface,
Insert and lock the shaft parts 42, 42 into the front frame 1 and the rear frame 2.
By combining the bearing grooves 8, 8, the pair of protrusions 9, 9 on the front surface of the rear frame 2 prevents the bearing from coming out, so that the bearing grooves 8, 8 are wound around the outer periphery of the front frame 1. By applying a voltage to the electromagnetic coil 10, the permanent magnet 6 of the shutter 3 is absorbed upward, and the shutter 3 is only allowed to rotate within the front frame 1.

Furthermore, when the shutter 3 is blocking the interior of the front frame 1, the left and right edges 52 of the shutter plate 5 are connected to a pair of shingle light film portions formed on the left and right sides of the interior of the front frame 1. IL
11 (one of which is shown in FIG. 2), and the lower edge 53 of the shutter plate 5 and the upper edge 3a of the shutter 3 are a pair of sponge-like adhesives fixed to the upper and lower inside of the front frame 1. Since the entire circumferential side edge portions (top and bottom, left and right) of the shutter 3 are closed by the buffer members 12 and 12, the light entering from the rear frame 2 is completely blocked by the shutter 3.

A pair of buffer members 1 fixed to the upper and lower sides of the front frame 1
2.12 In addition to having a beam and light function, the shutter 3 swings within the front frame 1 and also has the role of buffering the impact when it stops.

To connect the front frame 1 and the rear frame 2, a pair of hook pieces 13 and 13 protruding from the rear surface of the front frame 1 are formed symmetrically on the rear frame 2, and a pair of hook notches 14°14 are used. A means of snap-engaging is adopted.

The latching notches 14, 14 are also open to the outside, as shown in the horizontal cross-sectional view in FIG. The engagement is easily released.

The leaf spring 15 has a rectangular frame-shaped base 15a that is fitted into a groove 17 on the front surface of the flange 16 of the rear frame 2, and is formed near the upper and lower bases of spring pieces 15b that protrude forward from each side of the base 15a.

The claw pieces 18 are inserted into the latching grooves 19 on the upper and lower sides of the rear frame 2, respectively.
19, it is fixed to the rear frame 2.

The leaf spring 15 is used for attaching the transparent frame unit of this invention to a mosaic display panel 21 as shown in FIG. 5 by hooking the spring pieces 15b to the lattice block 20.

On the other hand, both ends 10a and 10b of the electromagnetic coil 10 wound around the outer circumference of the front frame 1 are fitted into grooves 22 and 22 on the upper surface of the rear frame 2 after the front frame 1 is connected to the rear frame 2. Contact piece 23
, 23.

The rear ends of the contact pieces 23, 23 are pressed into contact with a power supply side contact piece (not shown), and the electromagnetic coil 10 can be energized by closing a switch provided in the circuit.

Note that a desired filter 24 is fitted onto the front surface of the front frame 1.

The front frame 1 and the filter 24 are fitted together by the four protrusions 25 on the front frame 1 side and the holes 26 on the filter 24 side.

Further, when the front frame 1 and the rear frame 2 are connected, positioning is performed by fitting the protrusions 27, 27 protruding from the rear surface of the front frame 1 with the holes 28, 28 provided on the front surface of the rear frame 2. '.

In this embodiment, light from a relatively large light source (not shown) such as a fluorescent lamp is directly irradiated into the rear frame 2, and is projected onto the front filter 24 through the front frame. However, the light from the light source may be guided into the rear frame via an optical fiber between the light source and the rear frame.

Although the filter 24 is shown with a flat surface in FIG. 1, it may have a so-called diamond surface with unevenness, or it may be a color filter with color retention, etc. It can be selected as appropriate for the design.

The translucent frame unit of this invention, which has such a configuration,
When no current flows through the electromagnetic coil 10, the shaft portions 42, 42 of the shutter 3 protrude from its upper ends due to its own weight.
is the fulcrum, and the lower edge 53 is in contact with the lower buffer member 12, and the entire body is in a closed position facing obliquely forward and downward (the state shown in Fig. 2: from the rear frame 2 which is connected to each other). Light entering the front frame 1 is blocked.

When a voltage is applied to the electromagnetic coil 10, the permanent magnet 6 is magnetically attracted, and the shutter 3 swings upward around the shaft portion 42° 42, and is in a generally horizontal position in contact with the upper buffer member 12. The light from the light source that has passed through the rear frame 2 also passes through the front frame 1 and reaches the filter 24, so that the filter 24 in the required part of the mosaic display panel 210 is illuminated. Then, information is displayed.

When the application to the electromagnetic coil 10 is cut off again, the shutter 3 is in the closed position and the filter 24 is turned off.

In this way, the shutter 3 is configured to be able to swing within the front frame 1 between the closed position and the open position by controlling the application to the electromagnetic coil 10. 3, the shutter shaft 4, shutter plate 5, and permanent magnet 6 can be easily and precisely integrated by caulking the engaging protrusions 43, 43 of the shutter shaft 4. The above-mentioned perpendicularity between the shaft and the shutter plate, as seen in shutters in which the manufactured shaft, shutter plate, and permanent magnet are integrated with adhesive,
Inconveniences such as uneven flatness are eliminated, and the clearance S between the inner surface 1a of the front frame 1 and the side edges 52, 52 of the shutter plate 5 is reduced while swinging within the front frame 1. Even if the area is made large, the side edges 52, 52 of the shutter plate 5 will not get caught on the inner surfaces 1a, Ia of the front frame 1, and the swinging operation will be ensured. 53 and the lower buffer member 12 are in flat contact with each other, there is no gap between the abutments and no leakage of light occurs.

Furthermore, in the production thereof, the shutter plate 50 through-hole portion 51.51 and the engagement hole portions 61, 61 of the permanent magnet 6 are inserted into and engaged with the engagement protrusion 43°43 of the shutter shaft 4,
After that, the end portions of the engaging protrusions 43, 43 are completed by caulking them at the same time, so it is suitable for mass production and is suitable for bonding, compared to the conventional method where each piece is glued while paying attention to the squareness and flatness. It is also highly reliable and does not require post-processes such as drying, so it is far superior from an industrial perspective, as it can sufficiently withstand external impact forces such as vibrations and drops. Yes, and its practical effect is dogs.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view showing an embodiment of the translucent frame unit of this invention, Figure 2 is a vertical sectional view showing the combined state, and Figure 3 is a front view of the shutter assembled in the front frame. , Figure 4 is an enlarged horizontal sectional view of the front and rear frame joints, Figure 5 is a front view showing one row of mosaic display panels, Figure 6 is a diagram showing an embodiment of the shutter of this invention, and Figure A is an exploded view. The same figure is a perspective view, the same figure is an assembled side view, and Figure 7 is a figure showing a conventional shutter.
The figure is a plan view, and the same figure is a side view. 1... Front, section frame, 2... Rear frame, 3.
...Shutter 4...Shutter axis, 41
...Flat plate part, 42...Shaft part, 43...
... Engaging protrusion, 5 ... Shutter plate, 51
......Through hole part, 6...Permanent magnet, 61
...Engagement hole portion, 15...Plate spring, 10
・・・・・・Magnetic coil 0

Claims (1)

[Scope of utility model registration request] A front frame is equipped with a shutter that swings open and close with a permanent magnet inside, and an electromagnetic coil is wound on the outside.The front frame is connected to the rear surface of the front frame and has a spring hook on the side for the light emitting display lattice block. In a light-transmitting frame unit of a light-emitting display device, which is configured in combination with a rear frame to which a stop plate spring is attached, the shutter includes a flat plate portion having shaft portions at both ends, and a plurality of vertically protruding from the flat plate portion. a shutter shaft integrally formed of a plastic material with an engaging protrusion; a shutter plate made of an opaque sheet having a through hole that engages with the engaging protrusion of the shutter shaft; a permanent magnet having an engagement hole that engages with an engagement protrusion of the shutter shaft, and the shutter shaft, shutter plate, and permanent magnet are integrated by caulking the engagement protrusion of the shutter shaft. A transparent frame unit for a light emitting display device characterized by: