JPH08125231A - LED module - Google Patents

Abstract

(57) [Abstract] [Purpose] A desired number of LED modules 8 can be easily mounted on the base plate 9 by forming grooves and protrusions at positions corresponding to the outer side contact of the reflection case 3 and fitting them together.
It is an object of the present invention to provide an LED module that can be arranged in an orderly manner. [Structure] In an LED module 8 including an LED board 1, a reflection case 3, and a drive circuit board 6, the reflection case 3 is formed in a rectangular shape when viewed from the front.
A locking groove 10 is provided at a predetermined position on the outer surface of the reflection case 3,
When the plurality of LED modules 8 are arranged such that the locking projections 11 that can be fitted into the locking grooves 10 are formed and the outer surface of the reflection case 3 is in contact with the locking projections 10,
It is characterized in that the plurality of LED modules 8 are arranged in an orderly manner by fitting the locking projections 11 of the other adjacent LED modules 8 into.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED module constituting an LED display device.

[0002]

2. Description of the Related Art In recent years, an LED display device using an LED as a light emitting element has been widely used for a flat panel type electronic display device used for road information or advertisement. An LED module that constitutes this LED display device will be described with reference to FIGS. 5 and 6. A conductive pattern (not shown) is arranged on the LED substrate 1 formed into a square with one side of about 4 cm, and a plurality of LEs are arranged on the LED substrate 1.
D chips (not shown) are arranged in a matrix of, for example, 16 × 16 dots, and through holes 2 whose inner peripheral surface is a reflecting surface are provided so as to correspond to the arrangement of the LED chips. The reflection case 3 is formed in a square shape, and the entire surface of the reflection case 3 is covered with a translucent light diffusion sheet 4. L
A required number of current-carrying terminal pins 5 are attached to the back surface of the ED substrate 1, and the drive circuit boards 6 and 6 are electrically connected through the terminal pins 5. The bracket 7 has a substantially U-shaped cross section and is arranged substantially parallel to the front and rear sides.
The drive circuit boards 6 are attached so as to surround them.

The above-mentioned LED module 8 has a desired number of 10 on the base plate 9 having a desired area.
As shown in FIG. 7, the LED display device is obtained by arranging one to several hundred pieces so that their outer peripheries are in contact with each other and assembling them into a flat panel type. In the assembly of this LED display device, the outer surfaces of the LED modules 8 are brought into contact with each other, visually aligned and aligned, and mounted on the base plate 9 via the bracket 7.

[0004]

However, since the outside surface of the LED module described in the above-mentioned prior art is flat, a positional shift occurs in the vertical and horizontal directions at the time of visual alignment, or the adjacent LED modules are adjacent to each other. It has been extremely difficult to arrange the LED modules in an accurate and orderly manner because a gap is generated between the outer surfaces of the LED modules. Therefore, there is a problem that the quality of the image displayed on the LED display device is deteriorated and the information is difficult to read.

In order to eliminate this inconvenience, the positional deviation and the clearance are corrected manually after the LED module is mounted. This human correction work requires a high degree of skill and attention, and since extra time is spent, the efficiency of assembly work is reduced, and it is not possible to improve productivity and reduce manufacturing costs. There was a point.

Therefore, in order to solve the above-mentioned problems of the prior art, the present invention simply and conveniently forms a groove portion and a protrusion portion at positions corresponding to the outer side surfaces of the reflection case and fits them together. An object of the present invention is to provide an LED module in which a desired number of LED modules can be arranged in order on a base plate.

[0007]

In order to achieve the above object, the LED module of the present invention is an LED module comprising an LED substrate, a reflection case, and a drive circuit board, wherein the reflection case has a rectangular shape when viewed from the front. Is formed on the outer surface of the reflection case, a plurality of locking grooves are formed at predetermined positions on the outer surface of the reflection case, and a plurality of locking projections that can be fitted into the locking grooves are formed. When the LED module is arranged, the locking groove of the LED module is formed so that the locking projection of another LED module adjacent thereto is fitted.

[0008]

The LED module of the present invention engages with the locking projection of the reflection case of the LED module adjacent to the locking groove provided on the outer surface of the reflection case, and each LED module is mounted on the base plate through the bracket. It is installed and used. Since the locking groove and the locking projections are positioned so that all LED modules are set in the predetermined positions, by fitting the locking projections into the locking groove, the desired number of LED modules can be mounted on the base plate. They are arranged neatly without any displacement.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

In the embodiment shown in FIGS. 1-3, L
The ED substrate 1 is, for example, a square whose one side is about 4 cm.
Conductive patterns (not shown) are arranged in a matrix. A plurality of LED chips (not shown) are arranged in a matrix of, for example, 16 × 16 dots on the LED substrate 1, and through holes 2 provided corresponding to the array of LED chips (not shown) are provided on the front surface thereof. The rectangular reflection case 3 made of synthetic resin is provided. A transparent light diffusing sheet 4 is provided on the entire surface of the reflection case 3, and a required number of energizing terminal pins 5 capable of supplying electricity to the conductive pattern (not shown) are attached to the back surface of the LED substrate 1. ing. Two drive circuit boards 6, 6 containing electronic components (not shown) constituting a drive circuit for lighting the LED chip (not shown) via the terminal pins 5 for energization are arranged at predetermined intervals. It is electrically connected at. The bracket 7 is formed by forming a metal plate into a substantially U shape, and is attached to the base plate 9 so as to surround the drive circuit boards 6 and 6 on the back side and both sides. On the outer side surface of the reflection case 3, locking grooves 10 are formed on two adjacent sides that are continuous in a plan view, and locking projections 11 are formed on the other two adjacent sides in a shape that can be fitted to each other. In addition, they are formed equidistant from the corners of the reflective case 3. The depths of all the locking grooves 10 and the heights of the locking protrusions 11 are formed uniformly.

Next, the operation of this embodiment will be described with reference to FIG. 3 by mounting the LED module 8 on the base plate 9 via the bracket 7 by means such as screwing. The locking projection 10 of the reflection case 3 of another adjacent LED module 8 is fitted into the locking groove 10 formed on the outer surface of the reflection case 3 of the LED module 8 and both outer surfaces are brought into contact with each other. The LED modules 8 are aligned and mounted on the base plate 9 via the bracket 7 by means such as screwing. By arranging several tens to several hundreds of LED modules 8 sequentially in the same procedure, a flat panel type LED display device having a desired display area is constructed. LE
The D display device is a lighting signal sent from a separately provided lighting control device such as a personal computer, and energizes and lights a desired LED chip through a drive circuit, and a character is formed by a combination of the lighting dots. Display numbers, pictures, etc. as images.

As described above, since the LED module 8 is assembled by utilizing fitting of the locking groove 10 and the locking projection 11 without visual inspection, the LED module 8 is arranged in an orderly manner without causing misalignment. .

In the embodiment shown in FIG. 4, locking grooves 10 and locking projections 11 are alternately formed on the outer surface of the reflection case 3 when viewed from above, and these locking grooves 10 and locking projections 11 are formed.
Are formed into shapes that can be fitted to each other. The locking groove 10 and the locking protrusion 11 are provided at positions equidistant from the corners of adjacent sides which are orthogonal to each other. The other configuration is shown in FIG.
~ The same as the embodiment shown in Fig. 3.

In the above-mentioned embodiment, the description has been made on the case where the two engaging grooves and the engaging projections are formed on one side, but the number, shape, etc. of these engaging grooves and projections are not limited.

[0015]

EFFECT OF THE INVENTION Since the groove and the projection which are fitted to each other are provided on the outer surface of the reflection case which constitutes the LED module,
By fitting the groove and the protrusion between the adjacent LED modules, it is possible to arrange the LED modules in an orderly manner on the base plate without causing a gap or a gap between the LED modules, so that it is possible to improve the image quality.

Further, since the grooves and the projections can be fitted together, they can be arranged continuously without any positional displacement in the vertical and horizontal directions or gaps.
Since there is no need for correction work in the assembly process, workability can be improved and manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an LED module.

FIG. 2 is a side view of the LED module.

FIG. 3 is an assembly process diagram of an LED display device.

FIG. 4 is a partially cutaway front view of the LED module.

FIG. 5 is a partially cutaway front view of a conventional example of an LED module.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is an explanatory view showing a state where the LED module shown in FIGS. 5 and 6 is assembled on a base plate.

[Explanation of symbols]

 1 LED Board 3 Reflective Case 6 Drive Circuit Board 8 LED Module 10 Locking Groove 11 Locking Protrusion

Claims (1)

[Claims] 1. An LED module 8 comprising an LED board 1, a reflection case 3, and a drive circuit board 6,
The reflection case 3 is formed in a rectangular shape when viewed from the front, and the locking groove 10 is formed at a predetermined position on the outer surface of the reflection case 3.
And a locking projection 11 that can be fitted into the locking groove 10,
A plurality of LEDs so that the outer surface of the reflective case 3 is in contact
When the module 8 is arranged, the locking protrusion 10 of another LED module 8 adjacent to the locking groove 10 of the LED module 8 is arranged.
LE is characterized in that a plurality of LED modules 8 are arranged in an orderly manner by inserting 1 into it.
D module.