JP2982522B2 - LED display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED display for displaying information.

[0002]

2. Description of the Related Art In recent years, large-sized information display boards using LED displays have been used as information transmission means. This information display board is an LED display in which a plurality of LEDs (light emitting diodes) are aggregated and formed as if they were one LED and used as a display element of one dot.
Further, a large number of these are arranged two-dimensionally, thereby forming a large screen.

The configuration of a conventional LED display for an information display panel will be described below with reference to FIG. FIG.
(A) shows a conventional LE formed by assembling a plurality of LEDs.
A plan view of a part of the D display is shown in FIG.

[0004] Inside the outer shell 1 of the LED display, an LED is provided.
4 are mounted on the wiring board 2 side by side,
The space between the wiring board 4 and the wiring board 2 is filled with a waterproof resin 5.

Conventionally, thermosetting silicone rubber is used for the waterproof resin 5. It is a very low viscosity liquid before curing. Therefore, at the time of filling, it is necessary to prevent the liquid from leaking to the side a of the wiring board 2 opposite to the LED arrangement surface. For that, the outer shell 1
It is necessary to make the wiring board 2 and the wiring board 2 closely adhere to each other.

Each dot (picture element) of the LED display is separated from each other by a partition plate 6 in order to prevent light leakage to an adjacent dot. In order to fill the waterproof resin 5 in a state of being separated from each other by such a partition plate 6, the LED 4
A method has been adopted in which the gap is filled between the dots and the partition plate 6 for each dot using an injection needle or the like having a thin tip. After the filled waterproof resin 5 is cured, the screw 10 is removed, and the through hole is used as a through hole for the screw 11 for attaching the LED display to the information display plate 8 as shown in FIG. You.

[0007]

As described above, the conventional L
In the ED display, the gap between the LED 4 and the wiring board 2 must be filled with the waterproof resin 5 from the gap between the LED 4 and the partition plate 6. Therefore, the waterproof resin 5 stains the main part of the surface of the LED 4, Filling using a needle with a thin tip required a long time for filling, and the workability was extremely poor.

[0008] The present invention solves the above-mentioned problems, and is provided by LE
It is an object of the present invention to provide an LED display having a structure in which a waterproof resin is easily filled between D and a wiring board.

[0009]

LED display of the present invention SUMMARY OF THE INVENTION comprises a first through-hole from a large number of LED are two-dimensionally arranged on the LED arrangement surface Rutotomoni the LED arrangement surface to the back surface Wiring board, and an outer casing in which the wiring board is stored
And a resin filled in the outer shell on the wiring board,
A second through hole at a first predetermined location,
2. An LED display having a partition plate for partitioning a predetermined position.
And a third through hole and first and second cylinder tips having a small outer diameter.
And a cylindrical connecting body having a central portion having a large outer diameter.
A first cylindrical tip inserted through the first through-hole and the wiring board
Is fixed to the outer shell, and the second
Insert the cylinder tip into the second through-hole and position the partition plate
It is decided .

[0010]

According to the present invention, with the above-mentioned structure, the waterproof resin can be filled from a large gap between the dots, and a large amount can be filled at once without polluting the LED.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An LED display according to an embodiment of the present invention will be described below with reference to FIG. FIG. 1A is a plan view showing a part of the present embodiment, and FIG.
A sectional view and FIG. 1C is a BB sectional view of FIG. 1A.

As shown in FIG. 1, an outer shell 1 of the LED display is provided.
Inside, a wiring board 2 on which a large number of LEDs 4 are two-dimensionally arranged and mounted, and a hollow shaft 3 as a cylindrical connector partially penetrating through a through hole provided in a predetermined portion thereof are arranged. , Are fixed and held in the outer shell 1 by the waterproof resin 5 together with the LED 4.

A set of three LEDs 4 constitutes a one-dot light-emitting unit, partitions each light-emitting unit, and positions a partition plate 6 with the hollow shaft 3 in order to prevent light leakage to an adjacent light-emitting unit. Attached. A screw 7 is inserted through the hollow shaft 3, and the LED display is fixed to the information display plate 8. Further, a rubber ring 12 for preventing water from entering from a gap 3a between the screw 7 and the hollow shaft 3 is attached to the screw 7, and the partition plate 6 is held with the rubber ring 12 interposed. .

In the LED display having such a structure,
A method of filling the waterproof resin 5 before curing will be described with reference to FIG. 2A is a plan view, FIG. 2B is a cross-sectional view taken along line AA of FIG. 2A, and FIG. 2C is a view B of FIG.
It is -B sectional drawing.

[0015] As shown in FIG.
And the wiring board 2 holding the LED 4 is fixed via the hollow shaft 3 by the nut 11 and the screw 10 while being mounted on the jig 9 for preventing the nut from rotating.
The waterproof resin 5 is filled from between one light emitting unit of one LED 4 and another light emitting unit. Conventionally, the filling work of the waterproof resin was difficult due to the presence of the partition plate between the light emitting units, but the filling work can be performed very easily because there is no obstacle here. Further, since the wiring board 2 is securely brought into close contact with the outer shell 1 by the screws 10 passed through the through holes of the hollow shaft 3, even if the low-viscosity waterproof resin is filled, the filled resin is
There is no possibility of water being flooded from the portion where the shell 1 and the outer shell 1 meet. Thereafter, the waterproof resin 5 is cured by heating. After the curing, the screws 10 are removed, and the partition plate 6 is positioned on the hollow shaft 3 as shown in FIG. Fixed. Screw 7 is
In order to attach the LED display to the information display board, it must be longer than the screw 10.

As described above, in the LED display, the L
A through hole is provided from the arrangement surface of the ED 4 to the back surface, and the hollow cylindrical shaft 3 is arranged in the through hole.
Are used as holes for inserting the fixing screws 10 from filling of the waterproof resin 5 to curing, and as holes for inserting the fixing screws 7 into the information display plate when the LED display is attached. As a result, the partition plate 6 between the dots is not required when the waterproof resin 5 is filled, so that the filling operation of the waterproof resin 5 is facilitated, and the partition plate 6 can be attached after the waterproof resin 5 is cured.

Note that, as shown in FIG.
Is provided with a screw portion c at one end and a hexagonal hole d for a jig for screwing into the other end.
2 becomes easy, and the jig 9, screw 10 and nut 11 for preventing rotation of the nut shown in FIG.
Further, the workability is enhanced, and the production cost can be further reduced. Also, as shown in FIG.
However, since the rubber ring 12 is partially exposed from the partition plate 6, there is also an effect of preventing a disadvantage that the rubber ring 12 is excessively tightened by the screw 7 and is broken. In FIG.
(A) is a plan view, (B) is a side view, and (C) is a cross-sectional view along an axis.

[0018]

The LED display of the present invention has a large number of LEs.
D is two-dimensionally arranged on the wiring board, has a through-hole from the LED arrangement surface to the back surface, and a structure in which a cylindrical connecting body is inserted through the through-hole and the wiring board is fixed to the outer shell. did.
Thereby, the through-hole of the cylindrical connector is formed, for example, as a screw hole for fixing from the filling of the waterproof resin to the hardening at first.
When the ED display is installed, it is used as a fixing screw hole to the information display board, so that the partition plate between dots is not required when filling the waterproof resin, the work of filling the waterproof resin becomes easy, and the partition is set after the waterproof resin is cured. The plate can be attached, the workability can be extremely high, and the production cost can be greatly reduced.

[Brief description of the drawings]

FIGS. 1A and 1B show a state in which an LED display according to an embodiment of the present invention is mounted on an information display plate, FIG. 1A is a plan view of a part thereof, FIG. 1B is a cross-sectional view taken along line AA of FIG. C) is a BB cross-sectional view of (A).

FIG. 2 shows a state in which a waterproof resin is filled into an LED display according to one embodiment of the present invention, (A) is a plan view of a part thereof,
(B) is an AA cross-sectional view of (A), and (C) is a B- view of (A).
B sectional view

3A and 3B show a state in which a partition plate is attached to the LED display according to one embodiment of the present invention, and FIG.
(B) is an AA cross-sectional view of (A), and (C) is a B- view of (A).
B sectional view

4A and 4B show an example of the structure of a tubular connector used in the LED display of the present invention, wherein FIG. 4A is a plan view, FIG. 4B is a side view, and FIG. A sectional view

5A and 5B show a state in which a conventional LED display is filled with a waterproof resin, FIG. 5A is a plan view of a part thereof, and FIG.
AA sectional view of

[6] cross-sectional view showing a conventional state of attaching the LED display to the information display panel

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer shell 2 Wiring board 3 Hollow shaft 4 LED 5 Waterproof resin 6 Partition plate 7 Screw 8 Information display board 9 Nut detent jig 10 Screw 11 Nut 12 Rubber ring

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-46381 (JP, A) JP-A-62-38493 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G09F 9/00 G09F 9/33

Claims (1)

(57) [Claims] 1. A large number of LEDs are two-dimensionally arranged on an LED arrangement surface.
From the LED arrangement surface to the back surface
A wiring board having a first through-hole, and containing the wiring board
Outer shell, and filled in the outer shell on the wiring board
A resin having a second through hole at a first predetermined location;
LED having a partition plate for partitioning a second predetermined portion between D and D
An indicator, comprising: a third through hole, first and second cylinder tips having a small outer diameter, and an outer diameter
A first cylindrical tip of a cylindrical connector having a large central portion;
Through the first through hole to fix the wiring board to the outer shell, and to make the second cylinder tip of the connecting body forward.
The LED display in which the partition plate is positioned by being inserted through the second through hole .