JPS62144389A - Cubic printed wiring board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printed wiring board, and more particularly to a printed wiring board that eliminates the need for a case in which the printed wiring board is placed in an electronic device.

[Background Art] As electronic devices become more sophisticated and more dense, a large number of electronic components are required. Along with this, the number of printed wiring boards used in electronic devices has been increasing. When placing this printed wiring board inside an electronic device, the printed wiring board is often assembled in layers in order to make effective use of the space inside the device. Since the printed wiring boards are placed in a designated space, the intervals between the printed wiring boards are assembled as narrow as possible, so electronic components mounted on the printed wiring board may come into contact with the adjacent printed wiring board, and the electronic equipment This was also a cause of malfunctions.

Therefore, in order to protect the electronic components by holding the wiring boards at a certain distance and preventing contact between the electronic components and the printed wiring boards, a method of incorporating the printed wiring boards into the case has been considered. An example is shown in FIG.

FIG. 5 shows a perspective view of the case with the printed wiring board installed.

1 is a case in which a printed wiring board is installed, and this case 1 is provided with grooves 2 formed at regular intervals.

Reference numeral 3 denotes a printed wiring board, and electronic parts (not shown) are attached to the printed wiring board 3, which is configured to be engaged with the groove 2 and incorporated into the case l.

[Problems to be Solved by the Invention] However, in the method of incorporating printed wiring boards into the case and placing them in electronic equipment, the spacing between the printed wiring boards is narrow, and the heat dissipation effect generated in the electronic components is poor. There was a problem. Moreover, the shielding effect is also poor, and in particular, things that require a shielding effect such as a tuner circuit require a shield case or a shield plate made of metal or the like. Furthermore, jumper wires are required between the parts attached to the case and the printed wiring board inside the case, resulting in an increase in the number of jumper wires inside the case.

One object of the present invention is to provide a printed wiring board that improves the heat dissipation effect of electronic components and eliminates the need for a shield plate or the like.

[Means and effects for solving the problems] The present invention eliminates the need for a case in which the printed wiring board is installed, and forms the printed wiring board itself in position and attaches electronic components inside, thereby improving the heat dissipation of the electronic components. It enhances the effectiveness and has a shielding effect.

[Example] Hereinafter, two embodiments of the present invention will be described in detail with reference to the drawings.

(First Embodiment) FIG. 1 is a perspective view showing a first embodiment of the present invention, and FIG. 2 is a sectional view showing the inside of a housing-shaped printed wiring board.

10 is a rod-shaped printed wiring board, and this rod-shaped printed wiring board 10 is constructed by assembling a plurality of printed wiring boards 11 into a rod shape.

A pattern 12 is formed on each printed wiring board 11 by plating, conductive paste, etc., and an electronic component 13 is attached to the printed wiring board 11.
This configuration is arranged in the interior 14 of the.

FIG. 3 is a partially omitted explanatory diagram showing the assembled state of the printed wiring board 11.

FIG. 3a shows a rod-shaped printed wiring board 10 constructed by fixing printed wiring boards 11 to each other with screws or the like.

FIG. 3 shows that convex portions 16 are formed at appropriate intervals on the edge of one printed wiring board 11a, and concave portions 17 are formed on the edge of the other printed wiring board 11b at positions corresponding to the convex portions 16.
is formed, and the concave portion 17 and the convex portion 16 are fitted to form a printed wiring board 11a.

11b is fixed to form a 7-type pudding (wiring board 1o).

According to this embodiment, since the printed wiring board itself is formed in position, there is no need for a conventional case for incorporating the printed wiring board. Furthermore, the space inside the casing is large, allowing electronic components to be placed therein, improving the heat dissipation effect of the electronic components, and providing a shielding effect. Further, since a case for incorporating the printed wiring board is not required, the printed wiring board can be made of an insulating material such as plastic or a conductive material such as metal. In addition, many jumper wires were required between the printed wiring board and the components attached to the case, but since the components can be attached to the printed wiring board, the number of jumper wires can be reduced. .

(Second example) FIG. 4 is a perspective view showing a second embodiment of the present invention.

In this embodiment, a rod-shaped printed wiring board 20 smaller than the rod-shaped printed wiring board 10 is provided inside the housing of the positional printed wiring board 10 of the first embodiment, and (2) a carved printed wiring board 30 is configured. It is.

The position printed wiring board 20 includes a plurality of printed wiring boards 2
1 is formed into a shape, and is attached to one side of a printed wiring board 11 of a housing-shaped wiring board 10. Further, electronic components 13 are mounted inside the imitation printed wiring board 20 in the same manner as in the first embodiment.

In this embodiment, a small-sized copying printed wiring board 20 is provided inside the copying printed wiring board 10, but an even smaller copying printed wiring board is installed inside the copying printed wiring board 20. This can be implemented by providing it inside.

This embodiment can also achieve the same effects as the first embodiment, but in particular, since the housing-shaped printed wiring board has a multilayer structure, it is possible to use a large number of printed wiring boards. This has the advantage that electronic components can be used more widely.

[Effects of the Invention] As is clear from the above description, according to the present invention, the printed wiring board itself is used as a substitute for the case in which the printed wiring board is incorporated, thereby eliminating the need for a case and the need for a shield plate. Therefore, it has economic advantages. Furthermore, it is possible to provide a printed wiring board that has a good heat dissipation effect for electronic components.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a first embodiment of the imitation printed wiring board according to the present invention, FIG. 2 is a cross-sectional view thereof, and FIG. 3 is an explanatory diagram with some parts omitted showing the assembled state of the printed wiring board. FIG. 4 shows a patterned printed wiring board according to the present invention! FIG. 5 is an explanatory diagram showing the prior art. 1... Case 2... Groove 3.11.21... Printed wiring board 10.20.30... Imitation printed wiring board 12...
Pattern 13... Electronic component 14... Internal 15... Screw 16... Convex portion 17... Concave portion Patent applicant: CMK Japan Co., Ltd. Figure 1 Figure 2

Claims (4)

[Claims] (1) A housing-shaped printed wiring board characterized by being constructed by assembling a plurality of printed wiring boards into a housing shape. (2) The casing-shaped printed wiring board according to claim 1, wherein the printed wiring board has a pattern formed on the surface that becomes the inside of the casing, and electronic components and the like are attached thereto. (3) The printed wiring board is constructed by attaching a small casing-shaped printed wiring board, which is a casing-shaped assembly of a plurality of printed wiring boards, to one surface of the casing. The housing-shaped printed wiring board according to item 1. (4) The housing-shaped printed wiring board according to claim 1 or 2, characterized in that the small-sized housing-shaped printed wiring board has a pattern formed on the surface that becomes the inside of the housing, and electronic components, etc. are attached thereto. wiring board.