JPS598366Y2 - Connection structure of light emitting diode - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connection and mounting structure for detachable light emitting diodes.

Until now, when attaching a light emitting diode to a printed wiring board or the like and making an electrical connection, the connection process has been mainly performed by soldering.

In addition, connection processing using relay crimp terminals has also been carried out in some cases.

When such a connection process is performed, if a failure occurs in the light emitting diode and it becomes necessary to replace it, the replacement work is extremely troublesome and requires a large number of man-hours.

In other words, in the process of soldering, the solder of each terminal is melted and removed one by one using a soldering iron, which not only requires a lot of man-hours, but also causes damage to the printed wiring board, such as peeling off of the printed wiring pattern due to heat. It is extremely troublesome as you also have to be careful about damage to the parts.

Furthermore, when a relay crimp terminal is used, a special tool is required and the work takes a long time.

The present invention was devised to eliminate these drawbacks, and uses a diode socket with slots in its legs, and a light emitting diode that is inserted into this diode socket and protrudes from its legs. Bend the lead along the socket leg at a predetermined position on the outer periphery of the socket leg, insert it into the socket insertion hole drilled in the printed wiring board and having a conductor layer on its side wall, and This invention provides a light emitting diode connection structure in which an electrical connection is made by pressing the light emitting diode lead to the conductor layer on the side wall surface of the socket insertion hole of the printed wiring board by utilizing the spring properties of the socket leg. .

A detailed explanation will be given below according to the drawings. FIG. 1 is a perspective view showing an example of a diode socket used in the present invention and a light emitting diode inserted into the socket.

In the figure, 1 is a light emitting diode, and 11 and 12 are cathode and anode leads.

Further, 2 is a diode socket into which the diode 1 is inserted, 21 is a hole into which the leads 11 and 12 are inserted, 22 is a leg of the diode socket 2, and 23 is a leg of this leg. This is a slot provided to give springiness to 22.

Here, the slit 23 and the line connecting the centers of the two holes 21 are arranged in such a relationship that they are perpendicular to each other.

FIG. 2 is a perspective view showing the state in which the light emitting diode 1 is inserted into the diode case 2 as described above, in which the leads 11 and 12 of the light emitting diode 1 (in the figure As shown in the figure, the socket leg 22 is bent at a predetermined position on the outer periphery of the socket leg 22, that is, in a direction perpendicular to the slot 23, and then bent once again. It is folded along 22.

Figure 3 shows a printer I.
FIG. 2 is a cross-sectional view showing an example of a wiring board and a panel.

In the figure, 3 is a printed wiring board, 31 is a socket insertion hole slightly larger than the outer diameter of the leg portion 22 of the diode socket 2, and 32 and 33 are printed wiring patterns.

This printed wiring pattern 32. 33, the front and back sides of the printed wiring board 3 are electrically connected by through-hole plating conductor layers 34 and 35 provided on the side wall surface of the socket insertion hole 31, respectively.

Further, 4 is a panel on the front surface of the device, and 5 is a diode holder attached to this panel 4.

The light emitting diode 1 inserted into the diode socket 2 is inserted from the direction shown by the arrow in FIG.

FIG. 4 is a sectional view and a bottom view showing a model of such a state.

The diode socket 2 into which the light emitting diode 1 has been inserted is inserted and held in the diode holder 5, with only its legs 22 remaining in the socket insertion hole.

In this state, the lead 11.1 of the light emitting diode 1
2 is a wiring pattern 32 of the printed wiring board 3. No contact with 33.

The contact between the two is through the slot 23 of the diode socket 2.
This is achieved by inserting a screwdriver etc. into the holder and rotating it in the direction of the arrow.

Due to this rotation, the diode socket 2 rotates 90 degrees as shown in FIG.
2 comes into contact with the wiring pattern 33, and the light emitting diode 1 is electrically connected in a predetermined manner.

As mentioned before, the leg portion 22 of the diode socket 2 is provided with a slot 23 to provide spring properties.

Therefore, the leads 11, 12 of the light emitting diode 1 are firmly pressed against the conductor layers 34, 35 disposed on the side wall surface of the socket insertion hole 31 by the aforementioned spring pressure, so that the connection is sufficiently stable.

Here, as an example is shown in FIG. 6, the socket insertion hole 3
The leads 11 of the light emitting diode 1 are formed by arranging click stops 36 made of minute protrusions and depressions at opposing positions on the side wall surface of the light emitting diode 1, and by plating through holes thereon to form conductor layers 34 and 35. , 12 in place, and the leads 11.12 and conductor layers 34.
It is possible to increase the contact area with 35 and further improve the stability of the connection.

In addition, if the light emitting diode 1 is replaced frequently, the node 11.1 of the light emitting diode 1 is
2 rubs the conductor layers 34 and 35 on the side wall surface of the socket insertion hole 31, so if the conductor layers 34 and 35 are formed by through-hole plating, they will be subject to severe wear and electrical continuity will be broken. There is also.

Therefore, in such a case, the conductor layer 34 is made of a thin metal plate such as a brass plate. The problem is solved by manufacturing 35 as a separate part, attaching it to a conductive layer using through-hole plating, and bringing it into contact with the printed wiring patterns 32 and 33 to establish electrical continuity.

That is, the conductor layer 34. By using a thin metal plate as 35, the wear resistance of this portion can be increased, and the reliability of the connection on the side wall surface of the socket insertion hole 31 can be improved.

Further, as shown in FIG. 7, a protrusion 24 is provided on the leg portion 22 of the diode socket 2, and a notch 37 of a predetermined size is provided in a portion of the socket insertion hole 31 of the printed wiring board 3 corresponding to the protrusion 24. By providing this, it becomes easy to prevent wrong polarity when replacing the light emitting diode 1.

As described in detail above, if the light emitting diode connection structure according to the present invention is used, it is possible to replace a defective diode, etc.
Light-emitting diodes can be replaced extremely easily with one touch without the need for special tools, and there is no unnecessary heating of the printed wiring board, making it extremely easy to replace light-emitting diodes.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of a diode socket and a light emitting diode used in the present invention, Fig. 2 is a perspective view showing a state where the light emitting diode is inserted into the diode socket, and Fig. 3
The figure is a cross-sectional view showing an example of a printed wiring board and a panel.
5 and 5 are sectional views and bottom views showing the mounting state of the diode socket into which the light emitting diode is inserted, and FIGS. 6 and 7 are views showing other examples of socket insertion holes. 1... Light emitting diode, 11. 12...
...Lead, 2...Diode muquet, 21
...hole, 22 ... leg, 23 ...
...Slot, 24...Protrusion, 3...Printed wiring board, 31...Socket insertion hole, 32
．． 33... Perint wiring pattern, 34.
35...Conductor layer, 36...Click stopper, 37...Notch portion.

Claims (3)

[Scope of utility model registration request] (1) A diode socket that has a hole for inserting a light emitting diode lead, and has a slit to provide springiness in the leg portion along which the lead protruding from the bottom is bent; The legs of the diode socket, which is drilled into the printed wiring board and into which the light emitting diode is inserted, are inserted, and the light emitting diode leads bent along the legs are pressed against the side wall surface of the socket by the spring properties of the legs. A connection structure for a light emitting diode and a socket insertion hole having a conductive layer. (2) Utility model registration claim No. (2) characterized in that the socket insertion hole has a click stopper on its side wall surface.
Connection structure of the light emitting diode described in section 1). (3) Utility model registration claim No. (1) characterized in that the diode socket has a protrusion on its leg, and the socket insertion hole has a notch of a predetermined size on the side wall surface of the socket corresponding to the protrusion. The light emitting diode connection structure according to any one of item (2) and item (2).