JPS6317183Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is an electronic component device consisting of an electronic component and a holder used to mount it on a printed circuit board, etc., particularly an electronic component device consisting of a light emitting diode and a holder. The present invention relates to a light emitting display device.

Conventional technology and its problems When attaching a light emitting diode (hereinafter referred to as LED) to a printed circuit board (hereinafter referred to as P board),
There is a method in which the LED is made to stand on the P board, and a method in which the LED is fixed to the P board via a holder.

If the LED lens part is required to be placed relatively high on the P board, the stand-alone method will not stabilize the position, and a holder will be necessary. However, as conventional retainers focused on positional fixation,
Usually, when mounting an LED on a holder, no consideration is given to the device direction of the LED, that is, the polarity. As a result, incorrect polarity of LEDs occurred, resulting in large losses in the manufacturing process.

As a countermeasure for this, we focused on the fact that the lens part of the LED has a slightly directional shape to indicate polarity, and created a holder in which the housing part of the lens part has a directional shape that matches the lens part. Are known. However, due to dimensional variations between the lens part and the holder and deformation of the holder, if the LED is pushed in with some force, the LED may be attached to the holder with the wrong polarity. That is, the effect of preventing incorrect polarity mounting of the LED is insufficient, and there are many restrictions on the shape of the holder, etc., so this is not a practical countermeasure.

Purpose of the Invention The present invention is intended to solve the above-mentioned conventional problems, and aims to provide an electronic component device in which incorrect attachment of electronic components to a holder is reliably prevented.

Structure of the Invention The electronic component device of the present invention includes an electronic component having first and second lead wires, and first and second lead wires through which the first and second lead wires of the electronic component pass, respectively.
an electronic component device comprising a holder having a passageway, wherein a protrusion is formed such that a part of a tie bar connecting each lead wire of a lead frame for manufacturing the electronic component remains integrally with the first lead wire; is provided on the first lead wire and is formed along the first passage and allows the passage of the protrusion; a protrusion accommodating part is formed along the second passage and allows the passage of the protrusion; The holder is provided with a protrusion passage blocking portion for blocking the passage of the protrusion.

Embodiment FIGS. 1 to 8 are for explaining a light emitting display device according to an embodiment of the present invention. Figures 1 and 2 show LEDs. Figure 3 shows this
A lead frame used in LED manufacturing is shown.
Figures 4 and 5 show the retainer. 6 and 7 show a light emitting display device of the present invention in which the above-mentioned LED is mounted on a holder. FIG. 8 shows various shapes of protrusions formed on the lead wire.

As shown in FIG. 1, the LED 1 has a lens portion 2 made of a transparent or translucent resin molded body, and two lead wires 3 and 4 that extend linearly and substantially parallel to each other. Lead wire 3 is an anode lead, and lead wire 4 is a cathode lead. A protrusion 5 is formed on the lead wire 3 . A flange portion 6 is provided at the bottom of the lens portion 2. The protrusion 5 is
It is formed from tie bars (lead wire connecting strips) 8 of a lead frame 7 shown in FIG. As is well known, the LED lead frame 7 has a tie bar 8 for connecting a number of lead wires and a common connection strip 9 at the end of the lead wires. The individual LEDs 1 are manufactured by cutting the tie bars 8 and the common lead end connecting strips 9 at predetermined portions. Above protrusion 5
, the tie bar 8 is cut by shifting the cutting position of the tie bar 8.
It can be easily provided by leaving a part of the .

As shown in FIGS. 4 and 5 as viewed from different directions, the holder 10 is made of resin, and has a central wall portion 11 with a thickness approximately equal to the inner distance between the lead wires 3 and 4.
has. At the top of the central wall portion 11, gripping pieces 12 and 13 are provided to support the lens portion 2 of the LED. A locking claw 14 is formed on the gripping piece 12,
When the LED 1 is attached to the holder 10, the locking claw 14 locks the upper edge of the flange portion 6, and the LED 1
upward separation is prevented. Depending on the shape of the flange portion 6, the gripping piece 13 may also be provided with a locking claw. A support surface 15 for receiving the lower surface of the flange portion 6 is formed on the gripping pieces 12 and 13.

An upper end surface 16 of the central wall portion 11 is formed slightly below the support surface 15 . In order to provide appropriate bending elasticity to the gripping piece 12, a notch 17 is provided in the upper end 16, deviating toward the gripping piece 12 side. For this reason,
As will be described later, when attaching the LED 1 to the holder 10, the lens portion 2 of the LED can be attached to the grip pieces 12, 13 with a light touch. Approximately at the center of the central wall portion 11, there is a pair of inclined walls 19 that narrow downward.
20 is provided, and a pair of inclined walls 21 and 22 are similarly provided on the back surface thereof. Intermediate walls 23, 24 are formed at the lower portions of the inclined walls 19-22. Holes 25 and 26 are bored through the intermediate walls 23 and 24 to the bottom surface of the holder 10. Slanted wall 19-22
serves as a guide surface when inserting the LED lead wires 3 and 4 into the holes 25 and 26. The holes 25, 26 and their upper parts form first and second passages through which the first lead wire 3 and the second lead wire 4 pass, respectively.

A guide groove 18 is formed in the central wall portion 11 . The guide groove 18 is formed only on one side of the central wall portion 11 and extends downward from the upper end surface 16 by a predetermined length. When the LED 1 is attached to the holder 10, the guide groove 18 receives and guides the protrusion 5 of the lead wire 3. Therefore, the guide groove 18 has an inclined wall 18a so that the upper part forms a guide surface, and the lower part is a groove slightly wider than the thickness of the projection 5.

A pedestal portion 27 is provided at the lower part of the holder 10 to ensure stable attachment to the P plate. Pedestal part 2
7 has legs 28, 2 to be inserted into the holes of the P plate.
9 is formed. The diameters of the legs 28, 29 are different. Thin linear protrusions 30 and 31 are formed on the legs 28 and 29 in the length direction.

6 and 7 show an example in which a light emitting display device according to the present invention is attached to a P plate 32. In advance, the LED 1 is attached to the holder 10 from above with the lead wires 3 and 4 facing downward and so that the lead wires 3 and 4 straddle the central wall portion 11. In this case, the lead wires 3 and 4 are connected to the holes 25 and 26, respectively.
As the protrusion 5 is inserted into the guide groove 18, the protrusion 5 moves downward along the guide groove 18. When the LED 1 is completely attached, the flange portion 6 moves to a position where it contacts the support surface 15, and the lens portion 2 is fixed by the gripping pieces 12, 13 and the locking claw 14 so that it will not easily come off. . At the same time, each lead wire 3,
4 protrudes downward from the bottom surface of the pedestal portion 27.

As shown in FIG. 7, the guide groove 18 is formed only on one side of the central wall portion 11. Therefore,
When attempting to attach the LED 1 to the holder 10 with incorrect polarity, the protrusion 5 of the lead wire 3 collides with the upper end surface 16, making it impossible to move the flange portion 6 to a predetermined position. Even if an attempt is made to attach the LED 1 by applying a certain amount of force, the lower portions of the lead wires 3 and 4 will be inserted into the holes 26 and 25, respectively, so there is no chance of incorrect attachment due to deformation such as bending or twisting the lead wire 3. Therefore, the movement of the protrusion 5 is reliably prevented by the upper end surface 16. That is, the upper end surface 16 reliably functions as a protrusion passage blocking portion.

The light emitting display device in which the LED 1 is mounted on the holder 10 is attached to the P board 32. Legs 28, 2
9 are press-fitted into corresponding holes of the P plate 32 having different inner diameters according to these diameters, and the linear protrusions 3
Due to the deformation of 0.31, it is fixed in these holes without wobbling. Furthermore, since the inner diameters of these holes are different, incorrect attachment to the P plate is prevented. At this time, the lead wires 3 and 4 are also securely inserted into the corresponding holes of the P plate.

As shown in FIGS. 4 to 7, the leg 2
The linear protrusions 30 and 31 formed at 8 and 29 are offset by 90 degrees from each other. This is because the leg 29 is eccentrically inserted into the hole in the P plate to compensate for deviations caused by manufacturing variations in the distance between the legs 28 and 29 and the hole in the P plate into which they are inserted. This is to do so.

When the LED 1 is attached to the P board using the above-mentioned holder 10 and observed from the back side of the P board, the leg 2
8, 29 and the centers of the lead wires 3, 4 form the vertices of a parallelogram, and when the lead wires 3, 4 are fixed to the P plate with solder, the wobbling of the holder 10 in the front, rear, left and right directions is further reduced.

FIG. 8 shows a modification of the protrusion 5 provided on the lead wire to prevent incorrect attachment. In FIG. 8, protrusions 5 are formed on the left and right sides of the lead wire.

The holder includes a protrusion accommodating portion corresponding to the guide groove 18 of the above embodiment, depending on the shape of these protrusions, and
A protrusion passage blocking portion corresponding to the upper end surface 16 is formed.

As explained above, there is no possibility of incorrect wiring of the LED 1 to the P board 32, and the lens part 2 of the LED
is stably fixed at a relatively high position on the P plate 32, and a light emitting display device that is thin and has a relatively simple structure can be obtained.

As mentioned in the description of the embodiments, the present invention is not limited to the embodiments, and various applications and modifications can be made based on the spirit of the present invention.

For example, it can be applied to electronic components having three or more lead wires, and can also be applied to electronic components such as light receiving elements in addition to LEDs. The effect of the present invention will be even greater when applied to a holder whose legs for mounting the board have some form of function to prevent incorrect mounting to the board. The holder may be attached to the board in a specific direction according to an instruction given by, for example. The mounting direction of the lead wire is often caused by electrical or magnetic polarity, but it may also be caused by electrical potential relationships or external structure reasons. The specific structure of the lead wire protrusion, the protrusion accommodating portion, and the protrusion passage blocking portion may also be adapted to the type of electronic component or holder.

Effects of the Invention According to the present invention, when an electronic component is mounted on a holder, incorrect mounting (mainly incorrect polarity mounting) of the electronic component can be reliably prevented with a relatively simple structure.
That is, since it is possible to provide electronic components that do not cause incorrect mounting of electronic components, it contributes to reducing manufacturing errors and improving quality, and has great practical value.

Moreover, since the part of the diver that connects each lead wire of the lead frame near the electronic component body is used as a protrusion to prevent incorrect installation, the manufacturing process of electronic components does not increase or become complicated. There is no need to prepare a special lead frame. That is, it is sufficient to use the same lead frame as the standard product (protrusions to prevent incorrect attachment are not allowed), which account for the majority of the total production volume, and simply change the cutting shape when cutting and removing the tie bar. There is no need for lead forming, which is a different and new process (processing to form a bend in a lead wire in a completed electronic component).
Therefore, protrusions can be formed with extremely high productivity and at low cost, and are highly effective in electronic component devices where strict cost reductions are required in units of 1/100 yen. It is.

[Brief explanation of the drawing]

Figures 1 to 8 are for explaining an electronic component device showing one embodiment of the present invention. Figure 1 is a front view of the LED; Figure 2 is a side view of the LED; Figure 3 is a side view of the LED; is a plan view of the lead frame; Figures 4 and 5 are perspective views of the holder seen from different directions; Figure 6 is a front view of the LED mounted on the holder; Figure 7 is a 6 is a sectional view taken along the line L-L in FIG. 6; FIG. 8 is a front view showing another embodiment of the protrusion formed on the lead wire. 1...LED, 2...Lens part, 3, 4...Lead wire, 5...Protrusion, 7...Lead frame, 8
... Tie bar, 10 ... Holder, 18 ... Guide groove.

Claims (1)

[Scope of utility model registration request] an electronic component having first and second lead wires;
and a holder having first and second passages through which first and second lead wires of the electronic component pass, respectively, in an electronic component device, in which each lead wire of a lead frame for manufacturing the electronic component is connected. A protrusion formed with a portion of the tie bar remaining integrally with the first lead wire is provided on the first lead wire, and is formed along the first passage and allows passage of the protrusion. An electronic component device characterized in that the holder is provided with a protrusion accommodating portion and a protrusion passage blocking portion that is formed along the second passage and prevents the protrusion from passing.