JPH0610388Y2 - Display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a display device used for an advertising board and the like, and more particularly to a display device using an LED as a light source.

[Conventional technology]

A conventional display device of this type has an L-type display device as shown in FIGS.
The ED (light emitting diode) 1 is arranged in a case 2 on which a printed circuit board 3 is arranged, and the lead terminals 1a and 1b of the LED 1 are arranged.
Is soldered to the printed circuit board 3, and the resistor 4 is also attached to the printed circuit board 3.
Is attached, and the inside of the case is molded with resin 6.

On the other hand, on the array substrate 7, a group of holes to which a pair of + and-connectors 8 are attached are formed in a pattern corresponding to the pair of output pins 5.

[Problems to be solved by the device]

However, in the conventional display device of this type, the holes 1 of the array substrate 7 are
The connector is attached to each one, and there is a drawback that the pattern formation makes it expensive.

Further, since the pitch between the holes is set corresponding to the pitch of the output pins, if the pitch of the output pins changes, it is necessary to remake the array substrate.

Further, since the output pin has the directionality of the electrode, the lead terminal of the LED has to be inserted into the hole depending on the directionality, and the mounting work is troublesome, and there is a drawback that the LED does not light if the directionality is wrong. .

Therefore, an object of the present invention is to provide a display device that can be mounted regardless of the directionality of electrodes.

[Means for Solving the Problems]

The display device of the present invention for achieving the above object is an LED.
The LED lamp module includes a lamp module and a display plate on which the LED lamp module is mounted. The LED lamp module has an earphone plug-like plug connected to the lower end of the case, and has a pair of lead terminals in the case.
ED is arranged, one lead terminal is connected to one terminal of the plug through a resistor, the other lead terminal is connected to the other terminal, and the case is resin-molded in such a manner that the LED is embedded in the case. The display plate is composed of a pair of insulating plates that are overlapped with each other, and one of the insulating plates has a case holding groove arranged arbitrarily, and a hole for inserting a plug having the holding groove on the opening surface is provided. On the back surface of this insulating plate, there is arranged one electrode plate having a cut-and-raised part that is formed by bending the tip contacting one terminal of the plug toward the other insulating plate side, and insert the plug into the other insulating plate. A hole for inserting the tip of the plug is provided at a position corresponding to the hole to be inserted, and a recess serving as an escape groove for the contact terminal is formed around the one insulating plate side of the hole so that the engaging groove of the other terminal of the plug is formed. To contact A structure in which the other electrode plate having a cut-and-raised portion formed by bending the tip end corresponding to the concave portion is arranged on the other insulating plate, and electrode lead terminals integrally formed on each of the pair of electrode plates are provided in a protruding manner. Has been

[Action]

As shown in FIG. 3, when current is supplied to both electrode plates, L
Insert the plug of the ED lamp module through the hole of the one insulating plate and fit it, and make the cut-and-raised part of the one electrode plate contact one terminal and simultaneously make the cut-and-raised part of the other electrode plate contact the engaging part of the other terminal. And the LED lamp module emits light.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

The LED lamp module 11 has an earphone plug-shaped plug 15 composed of bipolar terminals 15a and 15b connected to the lower end of the case 13.

In the case 13, a pair of lead terminals 12a and 12b are provided.
LED 12 having an LED is arranged, and one lead terminal 12a of this LED 12 is connected to one terminal 15a of a plug 15 by a lead wire 12c via a current limiting resistor 14 by soldering or the like.

The other lead terminal 12b is welded to the other terminal 15b of the plug 15 by a lead wire 12d by soldering or the like.

After the above arrangement is completed, the LED 12 is embedded in the case 13, and a resin 16 containing a diffusing agent having the same color as the emission color of the LED 12 is injected and molded.

In this case, even if the LED 21 has a round shape, a triangular shape, a quadrangular shape, or the like, it is molded in such a manner that it is embedded in the case 13.

The display board A is composed of a pair of insulating plates 17 and 18 which can also serve as a decorative panel and which are overlapped with each other. On the other hand, the insulating plate 17 has a lower end of the case 13 for fixing the LED lamp module in a fixed position. The holes 19 having a holding groove 19a for holding a part of the are formed in a pattern by arbitrarily arranging the holes.

Further, on the back surface of the one insulating plate 17, a one electrode plate (-) 20 having a cut-and-raised 20a whose tip is bent so as to contact one terminal 15a of the plug 15 is arranged.

The one electrode plate (−) 20 has a protrusion 17 a provided on the back surface of the one insulating plate 17, and a hole 20 corresponding to the protrusion 17 a.
c is provided on the one electrode plate (-) 20 and is integrally attached by means such as thermal caulking.

Further, the other insulating plate 18 is provided with a hole 22 for holding the tip of the plug 15, and the one insulating plate 1 of the other insulating plate 18 is provided.
The other electrode 21 having a cut-and-raised portion 21a whose tip is bent so as to engage with the engaging portion of the other terminal 15b when the plug 15 is inserted is arranged on the surface of No. 7. Hole 2
A concave portion 22a is formed around 2 and the concave portion 22a is used as an escape groove of the cut-and-raised portion 21a of the other electrode plate 21. Further, in the other electrode plate 21, the protrusion 18a and the hole 21b are integrally attached by means such as thermal caulking as described above.

Further, electrode lead terminals 20b and 21c are attached to the pair of electrode plates 20 and 21, respectively.

Then, a DC voltage is applied to the electrode lead terminals 20b and 21c. The pair of insulating plates 17 and 18 and the pair of electrode plates 20 and 21 have the same shape.

[Effect of device]

According to the present invention having the above-described structure, the LED lamp module does not need to consider the directionality of the electrodes and is not accidentally mounted.

Further, since the one insulating plate can be manufactured as an insulating plate having the same shape and the same shape as the other insulating plate, it is possible to perform press working and molding at the same time, and
Both electrode plates can be integrally manufactured in the same shape, the same processing can be performed, and a display plate with a lower cost can be provided. Further, the number of parts can be reduced by forming the pair of insulating plates and the electrode plates into the same shape.

Further, since it is not necessary to attach a connector corresponding to the LED lamp module, workability is improved in terms of manufacturing.

Furthermore, since the engaging groove is attached to the opening surface of the hole, the LED lamp module is held in a fixed state at a fixed position without tipping over, thereby improving the displayability.

Further, since the LED lamp module uses a plug in the form of an earphone plug terminal, the contact reliability is improved and the above-mentioned directionality is lost.

Further, since the resistor is connected in series with the LED, the light emission brightness can be kept constant even if the VF is changed by each chip.

[Brief description of drawings]

FIG. 1 is a partial sectional view of an LED lamp module of the present invention, FIG. 2 is a perspective view of a display plate of the present invention, and FIG. 3 is a partial view of the LED lamp module of the present invention mounted on a display plate. Sectional view, FIG. 4 is a perspective view of a display panel of the present invention, FIG. 5 is a partial sectional view of a conventional LED lamp module, FIG. 6 is a perspective view of a conventional array substrate, and FIG. 7 is a conventional mounting. It is a state diagram. 11 ... LED lamp module, 12 ... LED, 13 ... Case, 14 ... Resistance, 15 ... Plug, 15a ... One terminal, 15b ... Other terminal, 16 ... Resin, A ... Display board, 17 ... One insulating plate 18 ... Other insulating Plate, 19, 22 ... Hole, 20 ... One electrode plate, 21 ... Other electrode plate, 20b, 21c ... Electrode extraction terminal.

Claims (1)

[Scope of utility model registration request] 1. An LED lamp module and a display plate on which the LED lamp module is mounted, wherein the LED lamp module has an earphone plug-like plug connected to a lower end of the case, and a pair is provided in the case. LED having a lead terminal is arranged, one lead terminal is connected to one terminal of the plug through a resistor, the other lead terminal is connected to the other terminal, and the LED is embedded in the case. The display plate is made of resin and is composed of a pair of insulating plates that are polymerized. One of the insulating plates has case holding grooves arranged arbitrarily, and a plug having the holding grooves on the opening surface is inserted. And a cut-and-raised part formed by bending the tip of one end of the plug, which contacts one terminal, toward the other insulating plate on the back surface of the insulating plate. The electrode plate is arranged, and the other insulating plate is provided with a hole for inserting the tip of the plug at a position corresponding to the hole for inserting the plug, and the contact terminal escapes around the one insulating plate side of the hole. A second electrode plate having a cut-and-raised portion formed by forming a concave portion to be a groove and bending the tip corresponding to the concave portion so as to contact the engaging groove of the other terminal of the plug is arranged on the other insulating plate, and A display device having a structure in which integrally formed electrode lead-out terminals are provided on each of the pair of electrode plates.