JPH098418A - Printed wiring board - Google Patents

Abstract

PURPOSE: To obtain the title printed-wiring board capable of facilitating the visual checking of the mounted position of a polar part in the printed-wiring board. CONSTITUTION: The title printed-wiring board is provided with silk displayer 4-4c totally or partially larger than planar configulational dimension of a polar part 5 e.g. by the silk printing process on the mounted position of the polar part 5 of the printed-wiring board whereon various parts including the polar part 5 is mounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed wiring board, and more particularly to a printed wiring board having a printed (for example, silk screen printing, etc.) display clearly indicating the mounting position of, for example, a polar component mounted on the printed wiring board. It is about.

[0002]

2. Description of the Related Art Conventionally, a printed wiring board is not provided with such a silk-screened display, and a polar component 5 such as a capacitor as shown in FIG. 4 is arranged on the printed wiring board. Shows a frame-like display such as a polar mounted component area display 1 showing the mounting area as shown in FIG. 3 at its disposition position, for example, a polarity display 6 on the anode side, a circuit symbol 3 of the component, It was simply printed or stamped and displayed. In both figures, 2 is an anode display showing an anode such as +, and 7 is a land for mounting the polar component 5 provided on the printed wiring board. To summarize the above, FIG.
3 is a conventional display that is printed or engraved on the printed wiring board at the mounting component mounting position. FIG.
FIG. 8 is a top view showing a state in which, for example, a polar component 5 is mounted in the display place of 1.

In addition to arranging the polar component 5 on the printed wiring board, a non-polar component (not shown) such as a resistor or a coil may be mounted, which is shown in FIG. As described above, the display of the mounted component area, the component circuit symbol, and the like are appropriately displayed as necessary. However, in the case of mounting a non-polar mounting component, it is not necessary to consider the difference in the arrangement of the polarities, so that the mounting work is relatively easy.

[0004]

However, when the polar parts are mounted on the printed wiring board, it is erroneous to mount them in a direction opposite to the specified mounting direction due to the carelessness of the operator, etc., when only the polar parts are mounted on the printed wiring board. There was such a problem. Also, in the inspection of the mounting direction after the polar component is mounted on the printed wiring board as described above, the polarity display (+) displayed on the printed wiring board and the polarity of the anode side displayed on the polar component I often overlooked the confirmation of the display by mistake.

[0005]

A printed wiring board according to the present invention is a printed wiring board on which various components including a polar component are mounted, the printed wiring board being provided at a mounting position of the polar component. It has a silk-printed display which is larger in whole or in part than the two-dimensional external dimensions of the above.

[0006]

According to the present invention, as a display which is wholly or partially larger than the planar outer dimensions of the polar component mounted on the printed wiring board, for example, a silk display by silk printing is provided at the mounting position of the polar component. Because it is a thing,
Since the silk display is not hidden by the polar component when the polar component is mounted or after the polar component is mounted, it is easy to visually confirm the mounting position of the polar component on the printed wiring board.

[0007]

Examples (a) to (d) of FIG. 1 are schematic views showing, for example, four different modes of an embodiment in which the mounting positions of polar parts on a printed wiring board according to the present invention are displayed by silk printing. It is a top view. In each of these examples, mounting (mounting) of polar parts on the printed wiring board
The display of the position is similar to that described in the conventional example of FIG. Note that the above-described four aspect diagrams are separately illustrated in the same diagram (FIG. 1) so that the differences between them are clearly shown.

First, at the position where a polar component (described later) of the printed wiring board is mounted, a polar mounted component area display 1 having substantially the same external dimensions as the polar component, and then the anode (+) side. Is displayed and the circuit symbol 3 (for example, C1 to C4 shown in the figure) is displayed. Although not shown, 7 is a land provided on the printed wiring board for attaching the polar component to the printed wiring board. The above are the display items common to the respective mode diagrams of FIGS. 1A to 1D, and show the same display state as the conventional example of FIG.

Further, as shown in FIGS. 1 (a) to 1 (d), a silk display (4 to 4c) which is slightly larger in plan view than the polar mounting area display 1 is formed by silk printing. . In the case of this embodiment, the silk display (4 to 4c) is formed by silk printing, but this printing is not limited to silk printing. The silk display 4 shown in (a) of FIG. 1 is formed in a plane shape on the printed wiring board so as to be larger than the outer frame line of the polar mounted component area display 1 in both length and width. Further, the silk display 4a shown in FIG. 1B is formed of a band-shaped frame-like body extending inside and outside along the outer frame line of the polar mounting component area display 1. Also, FIG.
The silk display 4b shown in (c) is formed by printing in a strip shape longer than the length dimension in the horizontal direction of the polar mounted component area display 1 and narrower than the width dimension in the vertical direction. The silk display 4c shown in (d) of FIG. 1 is formed by being printed in a rectangular plane shape that is shorter than the length dimension in the horizontal direction and larger than the width dimension in the vertical direction of the polar mounted component area display 1. ing. The shapes of the above-described silk displays 4 to 4c are not limited to those shown in the embodiment.

2A to 2D are shown in FIGS.
It is a schematic top view which shows the state which mounted the polar component on the printed wiring board of four states shown to (d). In each of these examples, as the polar component attached (mounted) to the printed wiring board, the polar component 5 similar to that described in the conventional example of FIG. 4 is used. Polarized parts 5
Usually has two terminal pins (not shown), and these pins are connected to a predetermined position of the wiring circuit of the printed wiring board through the two lands 7 so that (a) to (d) of FIG. It is installed as shown in. In this case, in any case,
The polarity display (anode side) 6 is displayed on the upper surface of the body of the polar component 5, and it can be seen at a glance that the anode side of the polar component 5 is normally attached to the anode display 2 side.
Moreover, each of the silk display 4 to 4c is shown in FIG.
In any of the drawings of (d), it is hidden by the polar component 5 so as not to be seen, so that the mounting location of the polar component 5 on the printed wiring board can be easily confirmed.

That is, since the polarity display 6 is displayed on the upper surface of the main body of the polar component 5, whether or not the polar component 5 is mounted at the mounting position in the proper direction is determined by the conventional anode display. In addition to the confirmation of 2 and the polarity display 6 described above, since the silk display 4 to 4c, which is slightly larger than the polar mounting area display 1 of the mounting location of the polar component 5, is displayed,
It is possible to easily confirm whether or not the polar component 5 mounted on the printed wiring board is properly mounted at a designated place.

As described above, according to the embodiment shown in FIGS. 1 and 2, the printed wiring board is mounted on the printed wiring board like the silk display 4 and 4a shown in FIGS. 1 and 2A to 2B. The overall size of the polar component 5 (or the polar mount component area display 1) is slightly larger than the printed size, or the silk screen is displayed in FIGS. 1 and 2 (c) to (d). Like 4b and 4c, it is printed and displayed in a fashion that partially protrudes slightly larger than a part of the outer dimension of the polar component 5. For this reason, when the polar component 5 is mounted on the printed wiring board, or after mounting, it is much easier to confirm the directionality, and problems such as reverse mounting of the polar component 5 can be prevented. It became so.

In the above-mentioned embodiments, the polar component 5 to be mounted on the printed wiring board of the present invention is not specifically specified, but in general, the printed wiring board has polar and non-polar components. It is customary to mount a large number. Therefore, in addition to the advantage that it is possible to easily identify where the polar component is installed, even if it is mistakenly installed in reverse, the location where the polar component is installed can be identified at a glance during visual inspection. There is. Therefore, as applicable polar components, polar capacitors such as aluminum electrolytic capacitors and tantalum electrolytic capacitors, and other various diodes (for example, light emitting diodes, Zener diodes, photodiodes), etc. can be applied.

[0014]

As described above, according to the present invention, for example, a silk-printed display, which is larger in whole or in part than the planar outer dimension of the polar component mounted on the printed wiring board, is mounted on the polar component. Since it is installed on the printed circuit board, the display will not be hidden by the polar parts even if the polar parts are mounted, and it will be easy to visually confirm the mounting position of the polar parts on the printed wiring board. is there. For this reason, when mounting polar parts on the printed wiring board and after mounting, it is much easier to confirm the directionality, and problems such as reverse mounting of polar parts can be prevented. The above effect is also great.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing four embodiments of a silk-screen printed display on a printed wiring board according to the present invention.

FIG. 2 is a schematic top view showing a state in which polar parts are mounted on the printed wiring board of FIG.

FIG. 3 is a schematic explanatory view showing one display provided at a mounting component disposition position of a conventional printed wiring board.

FIG. 4 is a top view showing a state in which, for example, a polar component is mounted at the display location in FIG.

[Explanation of symbols]

 1 Polarized component area display 2 Anode display 3 Circuit symbol 4, 4a, 4b, 4c Silk display 5 Polarized component 6 Polarity display (anode side) 7 Land

Claims (2)

[Claims] 1. A printed wiring board on which various components including a polar component are mounted, wherein the polar component is provided with a silk-printed display which is entirely larger than a planar outer dimension of the polar component. A printed wiring board that is provided at a position. 2. The silk-screened display is partially large, instead of being a silk-screened display that is entirely larger than the planar external dimensions of the polar component. Item 2. The printed wiring board according to item 1.