JPH0241659Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of a light emitting element mounting board for mounting a two-terminal type light emitting element such as a light emitting diode.

BACKGROUND ART Conventionally, a light emitting element mounting board has been used in a display device, such as a fixed sign board, that uses two-terminal light emitting elements such as a large number of light emitting diodes to display patterns such as letters and figures. The light-emitting element is attached by inserting each terminal lead into an insertion hole formed at a predetermined location on the substrate.

In such a conventional light emitting element mounting board, the wiring of the light emitting element and the wiring to the power supply for forming a predetermined display pattern are connected by soldering or the like to the lead terminals of the light emitting element protruding from the back of the board. This is done through the tedious work of connecting a large number of connected lead wires to each other on the back side of the board.

For example, when forming a fixed sign board, as shown in FIG.
A predetermined mounting hole 101 is drilled in the insulating substrate 1.
02, it is customary to insert the connection terminals of a large number of two-terminal light emitting element LEDs into this mounting board 102, and to connect the lead wires to the inserted connection terminals by soldering one by one. It's summery.

Therefore, in the conventional light emitter element mounting board, when mounting the light emitter element on the board, there is a problem that a great deal of wiring work is required and there is a high possibility of wiring errors. , Once the wiring has been made, it is extremely difficult to modify or change it.

Problems to be Solved by the Invention The mounting board of the present invention is intended to eliminate the above-mentioned drawbacks of conventional mounting boards. The purpose is to provide a mounting board that is easy to select and change.

Specific Example Means for Solving the Problems The specific means adopted by the present invention is a light emitting device that is provided with a plurality of joint terminals on the back side of an insulating substrate to arbitrarily change the electrical connection pattern of the two-terminal light emitting device. The invention relates to an improvement of an element mounting board, wherein each of the joint terminals has a pin insertion hole in the center, and is provided adjacent to the front and rear of the joint terminal so as to surround the pin insertion hole. 2
A plurality of selection terminals each communicating with the mounting hole of the terminal type light emitting element are provided, and a connecting terminal is formed to connect adjacent joint terminals, and a predetermined conductive pattern is inserted into the pin insertion hole of these joint terminals in advance. The present invention is characterized by a structure in which the electrical connection pattern of the two-terminal light emitting element can be arbitrarily changed by inserting a connecting pin formed with the above.

Note that the two-terminal light-emitting element in the present invention is
An element or component that emits light when energized, and its size and shape do not matter.

For example, those shown in FIGS. 1b to 1d are typical. Fig. 1b shows an LED lamp, Fig. 1b shows an incandescent lamp, and Fig. 1d shows a block body in which LEDs are sealed.

Effects and Effects of the Invention According to the light emitter element mounting board of the present invention, due to its structural features, any electrical connection pattern can be established by simply inserting a connection pin on which a predetermined conductive pattern is formed into the joint terminal. Moreover, by simply replacing the connection pins inserted into the joint terminals, the electrical connection pattern of the two-terminal light emitting element attached to the substrate can be selected and changed.

Therefore, as with conventional mounting boards, the terminals of the light emitting element are inserted into the predetermined mounting holes, and then the lead wires are connected by soldering or the like to the lead terminals of the light emitting element protruding from the back of the board. There is no need to take the trouble of connecting a large number of lead wires to each other on the back side of the board, making the connection work simple and extremely convenient.

Furthermore, since the mounting board of the present invention can be constructed by simply forming a conductive pattern on the back side of the insulating board, an inexpensive material such as a single-sided copper-clad laminate can be used, which has the advantage of reducing manufacturing costs.

Embodiment of the invention An embodiment of the invention will be described below with reference to the accompanying drawings.

Figure 1 shows an example in which the present invention is applied to a light-emitting display having an 8 x 8 dot light-emitting element mounting section (one 2-terminal light-emitting element is attached to each dot).
, which is a schematic wiring diagram of a conductive pattern formed on the back surface 1a of the insulating substrate 10 of the mounting board 1. The mounting board 1 is made of a printed circuit board using, for example, paper impregnated with phenol resin, glass cloth impregnated with epoxy resin, or the like.

In the figure, 2 is a light emitting diode (hereinafter
3 is a joint terminal; 7,
8 is a power supply device (not shown) when lighting the LED
It shows the power supply terminal connected to.

The joint terminal 3 in the present invention is schematically shown enlarged in FIG. 1a, but in reality,
For example, it is formed into a structure as shown in FIG. That is, in the embodiment shown in FIG. 2, the joint terminal 3 has four selection terminals 31 to 34 around a pin insertion hole 30 provided in the center, and connecting terminals 35 and 36 that connect the adjacent joint terminals 3. Each of the selection terminals 31 to 34 is connected to the LED mounting hole 2 via a conductive branch pattern 6, but the connection terminals 35 and 36 are connected to separate conductive patterns 60 and 60, respectively. Corresponding connection terminals 36 of adjacent joint terminals 3 via
It is connected to 35.

In the embodiment, the pin insertion hole 30 is as shown in FIGS.
As shown in the figure, the structure is such that the pin insertion hole 30 penetrates from the back surface 1a of the insulating substrate 10 to the front surface 1b side. However, if a thick insulating substrate 10 is used, the pin insertion hole 30 does not necessarily penetrate through the insulating substrate 10. It is not necessary, and any material that can insert and fix the connecting pin 4 described later may be used.

5 to 9 show embodiments of the connecting pin 4. FIG. The connecting pin 4 is used by grasping the handle shaft 42 with fingers and inserting the pin shaft 41 into the pin insertion hole 30 of the joint terminal 3 described above (see FIG. 4).

If a split groove 41a as shown in the figure is formed in advance on the pin shaft 41 having a larger diameter than the pin insertion hole 30, the pin shaft 41 can be securely fixed when inserted into the pin insertion hole 30.

The basic structure of the connecting pin 4 is shown in Figs.
A conductive pattern 40a is formed to connect any one of 5 and 36 to each other.

To form the conductive pattern 40a on the flange 40, the flange 40 is made of an insulating material, and a conductive film or a conductive layer corresponding to the pattern to be connected is formed on the lower surface (the side that contacts the joint terminal 3) of the conductive pattern 40a. Alternatively, a conductive plate may be sandwiched or attached to the flange 40 so that a portion thereof is exposed on the lower surface of the flange 40.

The connecting pin 4 may be formed of a conductive material, and in that case, the flange 40 may be formed in a shape corresponding to the shape of the conductive pattern 40a, or the flange may be 40 is formed by providing unevenness. Further, although not shown, an insulating pattern may be formed on the lower surface of the flange portion 40 to form the conductive pattern 40a. It goes without saying that the conductive pattern 40a formed on the connection pin 4 can be formed by various methods other than the above method.

Furthermore, since the structure of the conductive pattern 40a can be understood by showing examples of possible electrical connection patterns at the joint terminal 3, a detailed explanation thereof will be omitted.

FIGS. 10 a to 10 c schematically show examples of electrical connection patterns that are possible by inserting the connection pins 4 into the joint terminals 3. Figure a is
When connecting the connecting terminals 35 and 36, Figure b shows the selection terminals 33 and 34 formed on both sides of the connecting terminal 36.
Figure c shows a connection pattern when connecting the connecting terminal 36 and the selection terminal 33, and one or more of these basic connection patterns can be appropriately combined and mounted on the mounting board 1. Connect the LEDs together in any electrical connection pattern.

FIG. 11 shows the mounting board 1 of the present invention.
This is an example diagram more specifically showing an electrical connection pattern of LEDs, and shows LEDs mounted in necessary mounting holes 2 and connected in series.

In particular, in the case of the illustrated example, the LEDs form a letter pattern of "R", but since it shows the conductive pattern on the back surface 1a of the mounting board 1, the letter "R" appears to be facing in the opposite direction. ing.

In the figure, E is a power source, 7 and 8 are power supply terminals connected to the terminals of the power source E, and R is a current adjustment resistor that adjusts the current supplied to the LED.

On the other hand, FIG. 12 shows another example of the joint terminal 3. In this embodiment, joint terminal 3
There are a total of five terminals, and one of the selection terminals (31 in the illustrated example) doubles as a connection terminal.

In addition, in the figure, the parts given the same reference numerals as in FIG. 1a are given the same reference numerals, and the explanation is omitted.

FIGS. 13 and 14 show an example of the structure of a mounting board in a more specific embodiment of the present invention.
In the figure, 11 is a mask plate, and such a mask plate 11 is provided with a through hole 11a in a portion corresponding to the light emitting part B (consisting of an LED attached), so that the outline of the light emitting part B can be clearly seen. The light source is disposed on the top surface of the insulating substrate 10 to increase the apparent size of the light source and improve visibility.

In the case of FIG. 13, the insulating substrate 10 is directly
The LED is attached and the mask plate 11 is structured so that it can be attached to the top surface of the insulating substrate 10 separately from the LED attachment, but in the one shown in Fig. 14, the mask plate 11 is attached to the insulating substrate 10 and then the LED is attached. Connection terminal 1
2 is inserted into the mounting hole 2 of the insulating substrate 10 through the mounting hole 11c formed in the bottom plate portion 11b of the mask plate 11, and is attached to the insulating substrate 10.
It goes without saying that the mounting board of the present invention can be applied to any structure.

In addition, when the mask plate 11 is provided on the insulating substrate 10, the bottom surface of each light emitting section B (the upper surface portion of the insulating substrate 10 exposed through the through hole 11a of the mask plate 11) and the inner periphery of the through hole 11a of the mask plate 11 If a light reflecting surface is formed on one or both of these surfaces, the light emitting part B
is effective in increasing the luminous efficiency of.

In addition, in order to improve the brightness of the light emitting part B,
A structure may be adopted in which a plurality of light emitting elements are attached to the light emitting section B.

[Brief explanation of the drawing]

Fig. 1 is a schematic wiring diagram of a conductive pattern formed on the back side of the mounting board of the present invention, Fig. 1a is an enlarged schematic wiring diagram of a joint terminal, and Figs. 1b to 1d are examples of a two-terminal light emitting device. Figure 2 is a planar structural view showing one embodiment of the joint terminal, Figure 3 is a vertical cross-sectional view taken along the line - in Figure 2, and Figure 4 is a vertical cross-section of the joint terminal showing how the connecting pin is used. Structure diagrams, Figures 5 to 9 are diagrams showing variations of the connection pin, Figure 10 is a schematic wiring diagram of the electrical connection pattern at the joint terminal, and Figure 11 is an example of an LED mounted on the mounting board of the present invention. Figures 12 and 12 are schematic wiring diagrams of joint terminals in other examples of the mounting board of the present invention, Figures 13 and 14 are vertical cross-sectional structural diagrams when a mask plate is used as the mounting board, and Figure 15 is the conventional FIG. 3 is a diagram showing a conductive pattern on the back side of the light emitter element mounting board of FIG. Explanation of symbols, 1...Mounting board of the present invention, 10...
...The insulating substrate, 1a...The back surface, 2...The mounting hole for the two-terminal light emitting element, 3...Joint terminal, 30...Pin insertion hole, 31-34...Selection terminal, 35, 36... Connection terminal, 4... Connection pin,
40... Flange portion, 40a... Conductive pattern, 41...
...Pin shaft, 42...Handle shaft, LED...Light emitting diode (2 terminal type light emitting element).

Claims (1)

[Claims for Utility Model Registration] A two-terminal light emitter element mounting board, which has a plurality of joint terminals on the back side of an insulating substrate for arbitrarily changing the electrical connection pattern of the two-terminal light emitter element, Each of the terminals has a pin insertion hole in the center, and a plurality of holes surrounding the pin insertion hole and communicating with the mounting holes of the two-terminal light emitting element provided adjacently at the front and rear of the joint terminal. In addition to providing a selection terminal, a connecting terminal is formed to connect adjacent joint terminals.
The invention is characterized in that a connecting pin having a predetermined conductive pattern formed thereon is inserted into the pin insertion hole of these joint terminals to arbitrarily change the electrical connection pattern of the two-terminal light emitting element. Light emitter element mounting board.