JP2003084685A - Led display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED display device for outdoor use, such as a traffic sign, having a means for preventing falling of an LED display unit when the LED display unit is removed to be exchanged. SOLUTION: The LED display unit is a large-sized unit arrayed with, for example, 48×48 pieces of LEDs in a matrix form and is constituted by mounting the frame of the LED display unit 1 with one-side ends of wires 4 for preventing the fall and locking the other-side ends of the wires 4 with ring fittings 5 attached to a mounting board 2. When the LED display unit 1 is removed from a LED display section body 3, mounting screws are removed and thereafter the LED display unit 1 is inclined with respect to an aperture 2a of the mounting board 2 and is taken into a case 2b on the rear side of the mounting board 2 through the aperture 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED display device, and more specifically, in an outdoor LED display device such as a road display, when the LED display unit is mounted or maintained, the LED display unit is inserted through an opening of a mounting plate. The present invention relates to an LED display device that prevents it from being accidentally dropped.

[0002]

2. Description of the Related Art As a road information display device for notifying a driver of road information, a combination of a plurality of LED display units 101 in which a plurality of LED lamps 102 shown in FIG. LED display unit main body 10 mounted on a mounting plate 106 as shown in FIG.
7 is widely used due to the low power consumption, long life and high brightness of LED lamps.

The LED display unit 101 includes a plurality of LED lamps 102 and a louver 10 as shown in FIG.
3 is mounted on the frame 104, and the back side of the frame 104 is covered with the back cover 105. An opening 106a is formed in the mounting plate 106, the back cover 105 of the LED display unit 101 is inserted into the opening 106a, and the mounting screw hole 104a, the mounting screw 104b, and the mounting hole 10 are formed.
It is fixed by screws 6b. LED display unit 1
07 is a pillar 11 with a ladder 112 as shown in FIG.
It is installed above the traveling road of the vehicle by means of the arm 1 and the arm 113 so as to be easily seen by the driver and not obstruct the traveling of the vehicle.

LE used in these LED display devices
The D display unit 101 is inspected at regular intervals, and if a defect is found, it is replaced for each display unit. For replacement, the maintenance worker climbs the ladder 112 of the support column 111 of the display unit, passes through the arm 113 and goes around to the back side of the LED display unit main body 107, and from the back surface of the mounting plate 106 shown in FIG.
Remove the mounting screw 104b, LED display unit 1
01 was tilted as shown in FIG. 12, and the LED display unit 101 was manually pulled out through the rectangular opening 106a of the mounting plate 106. During the work, it is necessary to replace the LED display unit 101 with all climbed on the columns so as not to hinder the running of the vehicle.

[0005]

A conventional LED display unit used for a road information LED display device is a 16 × 16 unit type as shown in FIG. 8, but today, it is easy to assemble. The 48 × 48 type has been used for reasons such as cost reduction and cost reduction due to common use of power sources, and the volume and weight are larger than in the past. Therefore, the worker holds the LED display unit by hand,
The work of inclining and taking out in the opening of the mounting plate is difficult and dangerous, which reduces work efficiency and is dangerous to passersby and vehicles on the road.

The present invention has been made in view of the above situation, and when the display unit is replaced for maintenance of an outdoor LED display device such as a road sign, the display unit may be dropped on the road. It is an object of the present invention to provide an LED display device provided with a fall prevention means that can be surely prevented. Further, another object of the present invention is to provide an LED display device which has a structure in which the fall prevention means is attached only during the replacement work of the LED display unit and which can simplify the structure and reduce the cost.

[0007]

The present invention has been made to solve the above problems, and a first technical means has a plurality of LED display units each having a plurality of LED lamps and an opening. In the LED display device attached to the mounting plate, the back surface of the LED display unit and the back surface of the opening of the mounting plate are connected by a fall prevention cord.

The second technical means is the LE of the first technical means.
In the D display device, a hook is provided on the back surface of the LED display unit to lock the fall preventing cord.

The third technical means is the LE of the first technical means.
In the D display device, an engaging groove or an engaging hole is provided on the back surface of the LED display unit, and an engaging element provided on the drop preventing cord is locked.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
~ It demonstrates based on the Example shown in FIG. In the following description, a plurality of LED display units in which 48 × 48 LEDs are arranged in a matrix are used as an example.
An LED display device installed on a high-distance road and displaying road information will be described. FIG. 1 shows an LED according to an embodiment of the present invention.
FIG. 1A is a front view and FIG. 1B shows a display device.
Is a side view. In the LED display device of the present embodiment, 30 LED display units 1 are attached to the openings 2a of the mounting plate 2 to form the LED display main body 3. L
The ED display main body 3 is entirely box-shaped, and the rear portion of the mounting plate 2 is covered with a case 2b having a door that can be removed or opened and closed. On the road surface 10 of the high-distance road, a structure including a pillar 11 with a ladder 12 and a girder 13 with a tilting handrail 14 is constructed, and the LED display unit body 3 is attached to the center of the girder 13. 1 of the LED display unit main body 3
When replacing one LED unit 1, a maintenance worker climbs up the ladder 12 and travels along the girder 13 to the back side of the LED display unit body 3 to perform maintenance work from the back side of the LED display unit body 3.

FIG. 2 is a partially cutaway perspective view of the LED display unit main body as seen from the back side. 30 openings 2a are formed in the mounting plate 2 of the LED display unit main body 3, and the back cover 1b of the LED display unit 1 is provided from the front side of each opening 2a.
Is inserted and fixed with a fixing tool such as a mounting screw. Between the LED display unit 1 and the LED display unit main body 3,
They are connected by a fall prevention means including a wire 4 and a metal ring 5. As the fall prevention means in the case of FIG.
The wire 4 is fixed to the back surface of the D display unit 1, and the metal fitting 5 for fixing the wire is attached to the body frame 2c at a position corresponding to each opening 2a. The fall prevention means will be described later.

(Embodiment 1) FIG. 3 is a view showing an LED display unit used in an LED display device according to Embodiment 1 of the present invention. FIG. 3 (A) is a front view of the LED display unit.
(B) is a rear view of the LED unit, and FIG. 3 (C) is an LED
It is a figure which shows a mode that a LED display unit is passed through the opening part 2a of the mounting plate 2 when removing a display unit from the LED display part main body. The LED display unit of Example 1 is a large-sized one in which 48 × 48 LEDs are arranged in a matrix as shown in FIG. 3A, and as shown in FIG. One end of the fall prevention wire 4 is attached to the frame 1a, and a hook or metal fitting 4a for fixing is provided at the tip of the wire 4. When removing the LED display unit 1 used in Example 1 from the LED display unit body 3, after removing the mounting screws as shown in FIG. 3C, the LED display unit 1 is attached to the opening 2 a of the mounting plate 2. Tilt and attach plate 2 through opening 2a
Take it into the case 2b on the back side of.

As shown in FIG. 2, the fixing hook fitting or hook fitting 4a provided at the tip of the wire 4 is attached to the fitting or hook fitting 5 provided on the body frame 2c of the mounting plate 2 of the LED display body 3 as shown in FIG. LED by hooking
It is intended to prevent the display unit 1 from dropping when it is replaced. Fall prevention wire 4 to the LED display unit 1
Use a reliable fixing method such as welding to attach. Chains, ropes, etc. may be used in place of the wires, and any suitable cord can be used as long as it is a cord having a sufficient strength. Further, when the weight of the LED display unit 1 is large, it is also effective to adopt a configuration in which a plurality of cords such as wires are attached.

(Embodiment 2) FIG. 4 is a perspective view showing an LED display unit used in an LED display device according to Embodiment 2 of the present invention. The LED display unit 1 is provided with hook fittings 6 for attaching the fall prevention wire 4 so that the fall prevention wire 4 of the LED display device according to the first embodiment can be attached only during the replacement work of the LED display unit. Here, the wire 4 attached to the attachment plate 2 side is
The LED display unit 1 may be attached to each attachment portion, or an appropriate number of attachments such as hook fittings may be provided at appropriate positions on the attachment plate 2.
The wire may be engaged with the fitting on the mounting plate 2 side and the hook fitting 6 of the LED display unit 1 during the work. FIG. 5 is a perspective view showing a modified example of the second embodiment,
This is an example in which a ring fitting 7 is provided instead of the hook fitting 6 in FIG.

(Embodiment 3) FIG. 6 is a diagram showing an LED display unit used in an LED display device according to Embodiment 3 of the present invention. FIG. 6 (A) is a rear view and FIG. 6 (B) is a side view. is there.
The LED display unit 1 can be attached so that the fall prevention wire 4 can be attached only while the LED display unit 1 is being replaced.
The metal fitting 8 with a groove is provided on the back surface of the frame 1a, and the engaging element 8c fixed to the tip of the wire 4 having one end fixed to the back surface of the mounting plate 2 is attached.

FIG. 7 is a view showing the details of the grooved stopper 8 for attaching the wire. FIG. 7 (A) is a front view and FIG.
(B) is a side view. Groove stopper 8 shown in FIG.
Has a structure similar to that of a locking means used as a so-called door chain, in which an engaging element 8c attached to the tip of the wire 4 is formed with a large diameter hole 8b formed at the end of the wire attaching groove 8a. That is, the wire 4 can be securely attached to the LED display unit 1 by inserting it from the detaching position P1 and sliding it to the fixing position P2 of the wire engaging element 8c.

[0017]

As is apparent from the above description, the present invention has the following effects. The invention of claim 1 is
Since the back surface of the LED display unit and the back surface of the mounting plate of the LED display unit main body were connected by the rope for preventing the LED display unit from falling, the display unit is replaced when the outdoor LED display device such as a road sign is maintained. When
It is possible to reliably prevent the LED display unit from dropping onto the road.

According to the second aspect of the present invention, since hooks are provided on the back surface of the LED display unit to lock the fall-preventing cord attached to the mounting plate, the cord is replaced with the LED display unit. Can be installed only inside,
The structure is simple and the cost of the LED display device can be reduced.

According to the third aspect of the present invention, since the engaging groove or the engaging hole is provided on the back surface of the LED display unit so that the engaging element provided on the drop-preventing cord is locked, the cord is fixed. LE
It can be attached only during the replacement work of the D display unit, and the wire can be attached by inserting the engaging element into the groove for attaching the wire from the detaching position and sliding it to the fixed position.
It can be securely attached to the D display unit.

[Brief description of drawings]

FIG. 1 is a diagram showing an LED display device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of the LED display unit main body as seen from the back side.

FIG. 3 shows L used in the LED display device according to the first embodiment of the present invention.
It is a figure which shows an ED display unit.

FIG. 4 shows L used in the LED display device according to the second embodiment of the present invention.
It is a figure which shows an ED display unit.

FIG. 5 shows L used in the LED display device according to the second embodiment of the present invention.
It is a figure which shows the modification of an ED display unit.

FIG. 6 shows L used in the LED display device according to the third embodiment of the present invention.
It is a figure which shows an ED display unit.

FIG. 7 is a view showing a coupling relationship between a grooved stopper and an engaging element.

FIG. 8 is a diagram showing an LED display unit used in a conventional LED display device.

9 is an LED using the LED display unit shown in FIG.
It is a figure which shows a display part main body.

10 is a diagram showing a road information display device using the LED display unit main body shown in FIG.

FIG. 11 is a diagram showing a mounting configuration of the LED display unit to the mounting plate in FIGS. 9 and 10;

FIG. 12 is a diagram showing a state when the LED display unit is removed from the mounting plate in the configuration shown in FIG. 11.

[Explanation of symbols]

1 ... LED display unit, 1a ... frame, 1b ... back cover, 2 ... mounting plate, 2a ... opening, 2b ... case, 2
c ... body frame, 3 ... LED display body, 4 ... wire, 4a ... hook fitting, 5 ... (mounting plate) wheel fitting,
6 ... (for LED display unit) hook metal fittings, 7 ... (LE
Wheel bracket for D display unit, 8 ... Groove stopper, 8a
... Wire mounting groove, 8b ... Large diameter hole, 8c ... Engagement element, P1 ... Detachment position of wire engagement element, P2 ... Fixed position of wire engagement element.

Continued front page    F-term (reference) 5C094 AA47 BA23 CA19                 5G435 AA06 AA19 BB04 EE02 EE13                       EE49 GG42

Claims (3)

[Claims] 1. An LED display device in which a plurality of LED display units each including a plurality of LED lamps are mounted on a mounting plate having an opening, and a drop prevention is provided between a rear surface of the LED display unit and a rear surface of the opening of the mounting plate. An LED display device characterized in that the LED display device is connected by a cord. 2. The LED display device according to claim 1, wherein a hook is provided on a back surface of the LED display unit to lock the fall preventing cord. 3. The LED display device according to claim 1, wherein an engaging groove or an engaging hole is provided on a back surface of the LED display unit, and an engaging element provided on the fall preventing cord is locked. Characteristic LED display device.