JPH08101648A - Display device - Google Patents

Abstract

PURPOSE: To prevent gaskets fitted to respective display units from coming into contact with one another even when the display units are fitted contiguously to each other by forming slanting surface parts which slant inwards gradually with the distance from the fitting parts of the units on the outer peripheral surface sides of the gaskets. CONSTITUTION: When each display unit 16 is fitted to a unit fitting body 13 by tightening screws, a strong pressing force acts on the gasket 12, which deforms the gasket to swell toward the inner and outer peripheral surfaces. Since a slanting surface part 21a, however, is formed on the outer peripheral surface side of the gasket 21, even when the gasket 21 deforms swelling toward the outer peripheral surface, the outer peripheral surface of a flank plate 5a does not swell and the quantity of deformation of the gasket 21 to the outer peripheral surface becomes smaller. Even when plural display units 16 are fitted to the unit fitting body 13 adjacently to one another, the gaskets 21 provided in the respective display units 16 never come into contact with one another due to deformation by being pressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a display device in which a plurality of display units in which a plurality of display elements are arranged in a matrix are provided, and these display units are removably attached to a unit attachment body in a state of being adjacent to each other. Regarding

[0002]

2. Description of the Related Art In recent years, a large display device in which a large number of display elements are arranged in a matrix and the images and characters are displayed by controlling blinking of these display elements has been used in highways, stadiums and the like. in use. In such a display device, in order to facilitate the replacement and maintenance of the display elements, the display elements are divided into a plurality of display units arranged in a matrix, and the display units are mounted adjacent to each other. It is attached to the body to form a single display device.

A conventional example of such a display device will be described with reference to FIGS. First, FIG. 7 is a front view showing the entire structure of the display device 1. In the outer frame 2, 21 display units 3 arranged in three columns vertically and seven columns horizontally are provided. As shown in FIG. 8, each of these display units 3 has a housing 5 in which a plurality of light emitting diodes 4 as display elements are arranged in a matrix on one surface, and a plate-like packing on the front side of the housing 5. Front plate 7 attached via 6
And a printed wiring board 8 to which the light emitting diode 4 is attached
It is formed by and. A light-shielding louver 9 that laterally partitions the light emitting diode 4 is provided on the front surface of the front plate 7.

The printed wiring board 8 is arranged in the housing 5, and the light emitting diode 4 has an opening 10 formed in the housing 5 and an opening 1 formed in the packing 6.
1 and an opening 12 formed in the front plate 7 and exposed to the front side of the display unit 3. The housing 5
The inner diameter of the opening 10 and the opening 12 of the front plate 7 is formed larger than the outer diameter of the light emitting diode 4, but the inner diameter of the opening 11 of the packing 6 is slightly smaller than the outer diameter of the light emitting diode 4. Since the outer peripheral surface of the light emitting diode 4 which is formed and exposed to the front side of the display unit 3 is in close contact with the inner peripheral surface of the opening 11, the waterproof property between the light emitting diode 4 and the housing 5 is secured. ing.

Next, the display device 1 is provided with a unit mounting body 13, and by screwing a screwing portion (not shown) provided on the housing 5 to the unit mounting body 13, The display unit 3 is the unit mounting body 1
It is detachably attached to 3. Here, the housing 5
Is provided with a side surface plate 5a surrounding the printed wiring board 8, and the display unit 3 is attached to the unit mounting body 1.
A frame-shaped packing 14 is attached to the tip of the side plate 5a facing the unit attachment body 13 when it is attached to the unit 3. Then, the display unit 3 is attached to the unit mounting body 1
3 is attached to the unit mounting body 13
By being pressed by the mounting surface 13a of the above, the waterproof property between the side surface plate 5a and the unit mounting body 13 is secured.

[0006]

When the display unit 3 is mounted on the unit mounting body 13, a strong pressing force acts on the packing 14, which causes the packing 14 to have an outer peripheral surface side and an inner peripheral surface as shown in FIG. It deforms to a bulge toward the surface side.
Therefore, the packings 14 provided on the display units 3 adjacent to each other may be in a close contact state. When the packings 14 of the adjacent display units 3 come into close contact with each other, it becomes difficult to attach / detach the display unit 3 to / from the unit mounting body 13, and the packing 14 may be damaged during the attachment / detachment.

[0007]

According to the first aspect of the present invention,
A plurality of display units in which a plurality of display elements are arranged in a matrix on one surface, and the display units are removably attached in a state of being adjacent to each other, and the display unit on the opposite side of the surface on which the display elements are arranged. A unit mounting body facing the surface is provided, and the unit mounting body is mounted on the outer peripheral portion of the surface of the display unit facing the unit mounting body, and the display unit is pressed to the unit mounting body by mounting the display unit on the unit mounting body. A frame-shaped packing was provided, and an inclined surface portion was formed on the outer peripheral surface side of the packing, the inclined surface section gradually inward along the direction away from the unit mounting body.

According to a second aspect of the present invention, a plurality of display units in which a plurality of display elements are arranged in a matrix on one surface, and the display units are detachably attached adjacent to each other, and the display unit includes the display unit. A unit mounting body facing a surface opposite to the surface on which the display elements are arranged is provided, and the display unit is mounted on the outer periphery of a surface of the display unit facing the unit mounting body. Provide a frame-shaped packing that is pressed against this unit mounting body by mounting,
The packing is formed in a shape that reduces the amount of deformation that expands toward the outer peripheral surface side when pressed by mounting the display unit on the unit mounting body.

According to a third aspect of the present invention, in the first aspect of the invention, a stepped projection is formed on the outer peripheral portion of the surface of the display unit facing the unit mounting body, the stepped convex portion being recessed inward from the outer peripheral surface of the display unit housing. And a packing was attached to the stepped convex portion.

According to a fourth aspect of the present invention, in the third aspect of the invention, the upper end of the packing is extended to a height at which it comes into contact with the stepped portion of the stepped convex portion.

The invention according to claim 5 is the invention as defined in claims 1, 2, and 3.
Alternatively, in the invention described in 4, the lower end of the outer peripheral surface of the packing is projected on the outer peripheral surface of the display unit or outside the outer peripheral surface.

The invention according to claim 6 is the invention according to claim 1, 2,
In the invention described in item 3, 4 or 5, the maximum thickness dimension of the packing is substantially equal to the thickness dimension of the side plate of the display unit.

[0013]

According to the first aspect of the invention, when the display unit is attached to the unit mounting body, the packing attached to the display unit is pressed against the unit mounting body. And
The packing pressed by the unit mounting body is deformed to bulge toward the outer peripheral surface side and the inner peripheral surface side, but on the outer peripheral surface side of the packing, gradually move inward along the direction away from the unit mounting body. Since the sloping sloping surface is formed, the amount of deformation that bulges toward the outer peripheral surface side of the packing is small, and even if the display units are mounted on the unit mounting body adjacent to each other, the packings attached to each display unit Does not happen to be in close contact.

According to the second aspect of the invention, when the display unit is attached to the unit mounting body, the packing attached to the display unit is pressed against the unit mounting body. Then, the packing pressed by the unit mounting body is deformed into a state in which the packing expands toward the outer peripheral surface side and the inner peripheral surface side, but the packing is formed in a shape in which the amount of deformation expanding to the outer peripheral surface side is small. Therefore, even if the display units are mounted on the unit mounting body in a state of being close to each other, the packings mounted on the respective display units do not come into close contact with each other.

According to the third aspect of the present invention, when the display unit is mounted on the unit mounting body, even if the packing is pressed and inflated, the packing does not protrude from the outer peripheral surface of the display unit, and the display units are mounted closer to each other. Will be possible.

According to the fourth aspect of the invention, the upper end portion of the packing comes into contact with the step portion of the stepped convex portion, so that the waterproof property at the mounting portion of the packing is improved.

According to the fifth aspect of the present invention, the display unit is attached so that the lower ends of the packings attached to the adjacent display units are in line contact with each other, and the waterproof property is improved by the line contact between the lower ends of the packings. .

According to the sixth aspect of the invention, when the packing is pressed and swells to the outer peripheral surface side, the amount of deformation that swells to the outer peripheral side from the side plate of the display unit becomes small, and the mounting pitch of the display unit is made small. You can

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. The same parts as those described in FIGS. 7 to 9 are designated by the same reference numerals, and the description thereof will be omitted. First, FIG. 4 is a front view showing the overall structure of the display device 15 according to the present invention. Like the display device 1 shown in FIG. 7, the display device 15 is arranged in the outer frame 2 in three columns and seven columns. Twenty-one display units 16 are provided. These display units 16 are structurally similar to the display unit 3 shown in FIG.
As shown in FIG. 1, a plurality of light emitting diodes 4 as display elements are arranged on one surface of a housing 5, and a front plate attached to the front side of the housing 5 via a plate-like packing 6. 7. The printed wiring board 8 to which the light emitting diode 4 is attached is formed.

Next, the display device 15 is provided with a unit mounting body 13, and a large number of screw fastening plates 17 are fixed to the unit mounting body 13 as shown in FIG. On the other hand, one end of each of the four rod-shaped members 18 is fixed to the housing 5 with a screw 19, and the other end of each of the rod-shaped members 18 is fixed to the screw fixing plate 17 with a screw 20, whereby the display unit 16 is provided. The unit mounting body 13
Is being installed.

The casing 5 is provided with a side plate 5a surrounding the printed wiring board 8, and the display unit 1 is provided.
When attaching 6 to the unit mounting body 13, the tip of the side plate 5a facing the unit mounting body 13 is
A stepped convex portion 5b having a shape retracted inward from the outer peripheral surface of the side surface plate 5a is formed, and a frame-shaped packing 21 is adhered to the stepped convex portion 5b. And the display unit 16
When the unit is attached to the unit mounting body 13, the packing 2
By pressing 1 onto the mounting surface 13a of the unit mounting body 13, the waterproof property between the side surface plate 5a and the unit mounting body 13 is ensured.

Here, the packing 21 is formed of rubber as a frame and has an inner diameter equal to that of the side plate 5a. Also, packing 2
On the outer peripheral surface side of 1, there is formed an inclined surface portion 21a that gradually inwards along the direction away from the mounting surface 13a, and the outer diameter dimension of this inclined surface portion 21a is the largest diameter. The side plate 5 at the contact portion with 13a
It is formed to have the same outer diameter as a. In other words,
The lower end of the packing 21, which is the maximum thickness dimension of the packing 21, is formed to be substantially equal to the thickness dimension of the side surface plate 5a. Further, the upper end of the packing 21 has the stepped projection 5b.
It extends to a height where it abuts the stepped portion 5c.

In such a structure, the display unit 16 is attached to the unit mounting body 1 by tightening the screw 20.
When it is attached to No. 3, a strong pressing force acts on the packing 21, and the packing 21 is deformed into a state of bulging toward the inner peripheral surface side and the outer peripheral surface side. However, since the inclined surface portion 21a is formed on the outer peripheral surface side of the packing 21, even if the packing 21 is deformed in a state of bulging toward the outer peripheral surface side, as shown in FIG. The packing 21 does not bulge from the surface, and the amount of deformation of the packing 21 toward the outer peripheral surface is small. Therefore, even when a plurality of display units 16 are attached to the unit mounting body 13 adjacent to each other,
It does not happen that the packings 21 provided on each display unit 16 are deformed by pressing and stick to each other.

Therefore, when the display unit 16 is attached to or detached from the unit mounting body 13, the packing 21 is used.
Since there is no close contact between them, the attachment / detachment operation can be easily performed. Moreover, the packing 21 is not damaged when the display unit 16 is attached or detached, and the packing 21 is not removed even after the display unit 16 is repeatedly attached and detached.
The waterproof property of is maintained well.

When the display unit 16 is mounted on the unit mounting body 13, the packing 21 has the side plate 5a.
It does not bulge from the outer peripheral surface of. Therefore, regarding the mounting of the display unit 16 to the unit mounting body 13, even if the adjacent display units 16 are mounted in a state of being extremely close to each other, the packings 21 provided on the adjacent display units 16 are closely attached to each other. Does not occur. By attaching the adjacent display units 16 to the unit mounting body 13 in a state where they are extremely close to each other, the gap between the display units 16 becomes inconspicuous, and the image quality of images and characters displayed by the display device 15 is improved. . Further, since the upper end of the packing 21 is in contact with the stepped portion 5c of the stepped convex portion 5b, the waterproofness of the portion where the packing 21 is attached to the side surface plate 5a is improved.

In this embodiment, the packing 21
Although the lower end of the outer peripheral surface of the side plate 5a is projected to the outer peripheral surface of the side plate 5a as an example, the outer peripheral surface of the packing 21 may be protruded to the outside. Then, by attaching the display unit 16 to the unit attachment body 13, the packing 21 attached to the adjacent display unit 16 is attached.
By mounting the display unit 16 so that the lower ends of the packing 21 come into line contact with each other, the waterproof property between the packing 21 and the mounting surface 13a is improved.

In the present embodiment, the case where the packing 21 is attached to the side plate 5a of the housing 5 by adhesion has been described as an example, but the same fitting as in the case shown in FIG. 8 is performed. It may be performed by.

[0028]

As described above, according to the first aspect of the present invention, a plurality of display units in which a plurality of display elements are arranged in a matrix on one surface and the display units are removably mounted adjacent to each other. A display unit and a unit mounting body that faces the surface of the display unit on which the display elements are arranged are also provided, and the unit is mounted on the outer periphery of the surface of the display unit that faces the unit mounting body. A frame-shaped packing that is pressed by the unit mounting body is provided by mounting the unit mounting body on the outer peripheral surface side of the packing, and an inclined surface portion that gradually inwards along the direction away from the unit mounting body is provided. Since it is formed, the packing is pressed by mounting the display unit to the unit mounting body and it expands toward the outer peripheral surface side. Even if the packing is deformed, since the inclined surface is formed on the outer peripheral surface side of the packing, it is possible to suppress the amount of deformation caused by the expansion of the packing toward the outer peripheral surface side. Even if it is mounted on the unit mounting body, it is possible to prevent the packings attached to each display unit from sticking to each other, which prevents the display unit from being attached or removed incorrectly and the packings from being damaged. It has the effect of being able to.

According to a second aspect of the present invention, as described above, a plurality of display units in which a plurality of display elements are arranged in a matrix on one surface, and the display units are detachably attached adjacent to each other, and A unit mounting body facing the surface of the display unit opposite to the surface on which the display elements are arranged is provided, and the display unit is mounted on the outer peripheral portion of the surface of the display unit facing the unit mounting body. A frame-shaped packing that is pressed against the unit mounting body by being mounted on the unit mounting body is provided, and the packing expands toward the outer peripheral surface side when pressed by mounting the display unit on the unit mounting body. Since it is formed in a shape that reduces
Even if the packing is pressed by the unit mounting body and deformed so that it swells toward the outer peripheral surface by mounting the display unit on the unit mounting body, the packing is shaped to reduce the amount of deformation that bulges toward the outer peripheral surface. Because it has been
Even if the display units are mounted on the unit mounting body so that they are adjacent to each other, it is possible to prevent the packings attached to each display unit from sticking to each other. It also has the effect of preventing damage to the packing.

As described above, the invention according to claim 3 is, in the invention according to claim 1, in the outer peripheral portion of the surface of the display unit facing the unit mounting body, the step retracted inward from the outer peripheral surface of the display unit. Since the protrusion is formed and the packing is attached to the stepped protrusion, when the display unit is attached to the unit mounting body, even if the packing is pressed and expands to the outer peripheral surface side, it protrudes from the outer peripheral surface of the display unit. Therefore, the display units can be mounted closer to each other in the unit mounting body, thereby making the gap between the display units inconspicuous and displaying by the display device. It has the effect of improving the image quality of images and characters.

As described above, in the invention according to claim 4, in the invention according to claim 3, since the upper end of the packing extends to a height at which it comes into contact with the stepped portion of the stepped convex portion, This has the effect of improving the waterproof property of the packing attachment part.

As described above, in the invention according to claim 5, in the invention according to claim 1, 2, 3 or 4, the lower end of the outer peripheral surface of the packing extends on the outer peripheral surface of the display unit or outside the outer peripheral surface. Therefore, by installing the display units so that the lower ends of the packings attached to the adjacent display units come into line contact with each other, it is possible to improve the waterproof property by the line contact between the lower ends of the packings. Have.

As described above, in the invention according to claim 6, in the invention according to claim 1, 2, 3, 4 or 5, the maximum thickness dimension of the packing is substantially equal to the thickness dimension of the side plate of the display unit. Therefore, when the packing is pressed and swells to the outer peripheral surface side, the amount of deformation that swells to the outer peripheral side from the side plate of the display unit becomes smaller, and the mounting pitch of the display unit can be made smaller. It is possible to make the gaps inconspicuous and to improve the image quality of images and characters displayed by this display device.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view showing a main part of a display device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a deformed state of the packing.

FIG. 3 is an exploded perspective view showing a state in which a display unit is removed from a unit mounting body.

FIG. 4 is a front view showing the overall structure of the display device.

FIG. 5 is an enlarged front view showing one display unit in the display device.

FIG. 6 is a vertical sectional side view showing a display device.

FIG. 7 is a front view showing a conventional display device.

FIG. 8 is an enlarged sectional view showing a part of a display device of a conventional example.

FIG. 9 is a cross-sectional view showing a deformed state of the packing.

[Explanation of symbols]

 4 display element 5a side plate 5b stepped convex portion 5c stepped portion 13 unit mounting body 16 display unit 21 packing 21a inclined surface portion

Claims (6)

[Claims] 1. A plurality of display units in which a plurality of display elements are arranged in a matrix on one surface, and the display units are detachably attached in a state of being adjacent to each other, and the display elements in the display unit are arranged. A unit mounting body facing the surface opposite to the surface is provided, and this unit mounting is performed by mounting the display unit on the outer periphery of the surface of the display unit facing the unit mounting body. A display device characterized in that a frame-shaped packing that is pressed against the body is provided, and an inclined surface portion that is gradually inclined inward is formed on the outer peripheral surface side of the packing along a direction away from the unit mounting body. 2. A plurality of display units in which a plurality of display elements are arranged in a matrix on one surface, and the display units are detachably attached in a state of being adjacent to each other, and the display elements in the display unit are arranged. A unit mounting body facing the surface opposite to the surface is provided, and this unit mounting is performed by mounting the display unit on the outer periphery of the surface of the display unit facing the unit mounting body. A frame-shaped packing that is pressed against the body is provided, and the packing is formed in a shape that reduces the amount of deformation that expands to the outer peripheral surface side when pressed by mounting the display unit on the unit mounting body. And display device. 3. A stepped convex portion that is recessed inward from the outer peripheral surface of the display unit is formed on the outer peripheral portion of the surface of the display unit that faces the unit mounting body, and packing is attached to the stepped convex portion. The display device according to claim 1, wherein: 4. The display device according to claim 3, wherein the upper end of the packing extends to a height at which it comes into contact with the stepped portion of the stepped convex portion. 5. The display device according to claim 1, wherein the lower end of the outer peripheral surface of the packing projects on the outer peripheral surface of the display unit or outside the outer peripheral surface. 6. The display device according to claim 1, wherein the maximum thickness dimension of the packing is substantially equal to the thickness dimension of the side plate of the display unit.