JPH0517910Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a printed circuit board for electronic equipment in which a connector of the printed circuit board is exposed to an opening of a cabinet.

[Summary of the idea]

The present invention provides a printed circuit board for an electronic device in which a printed circuit board to which a connector is attached is arranged in a cabinet, and the connector is exposed to an opening provided in the cabinet. By making the resist applied to the other side the same color as the cabinet, even if the printed circuit board inside the cabinet is visible through the opening of the cabinet, there is no appearance of discomfort.

[Conventional technology]

As is well known, when various electronic devices are equipped with connectors for connecting signal lines, etc., a printed circuit board with this connector attached is placed inside the device's cabinet, and the connector is installed on the rear panel of the cabinet, for example. The connector is made to face the opening.

[Problem that the invention attempts to solve]

However, in the case where the connector faces the opening of the cabinet as described above, when the rear panel of the cabinet is viewed from the outside, the printed circuit board inside the cabinet is visible through the opening. As a result, the appearance around the opening of the cabinet looked very strange.

Furthermore, if the specifications of the equipment are different depending on the presence or absence of a connector, if a cabinet is to be shared, the printed circuit board inside the cabinet will be completely visible through the opening if the specification does not include a connector. Therefore, it is necessary to prepare dedicated cabinets for each type of connector depending on the presence or absence of the connector, which poses the problem of significantly increasing costs.

Therefore, the present invention is intended to provide an appearance that does not give any sense of discomfort even if the printed circuit board inside the cabinet is visible through the opening of the cabinet.

[Problem that the invention attempts to solve]

According to the present invention, in the above-mentioned printed circuit board for electronic equipment, the resist applied to at least the surface of the printed circuit board to which the connector is attached is made of a resist of the same color as that of the cabinet.

[Effect]

According to the present invention, even if the printed circuit board inside the cabinet is visible through the opening of the cabinet, the color of the resist on the printed circuit board is the same as the color of the cabinet, so there is no appearance discomfort.

Further, since there is no discomfort even if the printed circuit board is completely visible through the opening, a cabinet with a specification without a connector and a cabinet with a specification with a connector can be used in common.

〔Example〕

An embodiment in which the present invention is applied to a printed circuit board for a compact disc player will be described below with reference to the drawings.

First, as shown in FIG. 3, a cabinet (outer casing) 2 of the player main body 1 has a rectangular parallelepiped shape, and a front panel 3 attached to the front of the cabinet 2 has a front opening 4. The cabinet 2 and front panel 3 are molded from black synthetic resin. Then, place the disc (compact disc) 5 horizontally and place the player body 1.
The disk tray 6 for horizontal loading is pulled out from the front opening 4 to the outside of the player body 1 as shown by the solid line, and the pulled position is pulled into the player body 1 as shown by the dashed line. It is provided so that it can freely go in and out in the horizontal direction shown by arrows a and b. Note that the front panel 3 has a loading bar for moving the disk tray 6.
an eject button 7, a sequential button 8 for causing the microcomputer to randomly select the order of songs to be played, a repeat button 9 for repeatedly playing one song or one disc, a program button 10 for program play;
A stop button 11 and the like are provided, and a display section 12 is provided above each of these buttons for displaying the order of music to be played, the playing time, and the like. Furthermore, on the front panel 3, there is a play/pause button 13 and a selection button 1 for the order of songs to be played.
4. An auto space button 15 and the like are provided to allow a predetermined silent time between performance songs.

In this disc player, after setting the disc 5 horizontally on the disc tray 6 in the pulled-out position, when the loading/eject button 7 is pressed, the disc tray 6 is loaded from the pulled-out position to the pulled-in position in the direction of arrow b. . The disc 5 is fixed onto a turntable 16 provided within the player body 1 by a chucking member 17, and is played by an optical head 18 while being rotated. When the loading/eject button 7 is pressed after playback, the disk tray 6 is ejected (unloaded) from the retracted position to the withdrawn position in the direction of arrow a.

Next, a circuit printed circuit board 20 is horizontally arranged within the cabinet 2 at the side where the disk tray 6 is pulled in. As shown in FIG. 1, the upper surface of this printed circuit board 20 is a component mounting surface 22 on which various electronic components 21 are mounted, and the lower surface is a circuit pattern surface 23 on which a copper foil circuit pattern is formed. ing. A ground pattern is formed almost entirely on the component mounting surface 22, and the printed circuit board 20 is constructed as a double-sided board.

Next, a plurality of protrusions 25a to 25f are integrally formed on the rear end portion 20a of the printed circuit board 20, and connectors 27a to 27f are attached to the upper surface of each of these protrusions 25a to 25f, respectively.
Note that each protrusion 25a to 25f is connected to each connector 27a to 25f.
It is formed in such a size that it covers 27f from below. The connectors 27a and 27b are circus input and output terminals for supplying remote control signals to other amplifiers, etc., and the connector 27c is a circus input and output terminal for connecting to a tape recorder to perform automatic recording using signals from the player. Connector 27d is a power sub-cord terminal, connector 27e
and 27f are used as a pair of line output terminals. Incidentally, the connectors 27a to 27f are selectively provided depending on the specifications of the disc player, and in this embodiment, the connectors 27a to 27f are provided as shown by solid lines.
connectors 27a, 27e, and 27f are provided, and connectors 27a, 27b, and 27d are not provided, as shown by the dashed line.

By the way, in this embodiment, the component mounting surface 22 of the printed circuit board 20 has respective protrusions 25a to 25a.
Resist 2 is completely black including the top surface of 25f.
9 is applied, thereby performing insulation treatment. That is, the color of this resist 29 is the same as the color of the cabinet 2, which is black. Note that the circuit pattern surface 23 of the printed circuit board 20
A typical green or blue resist is applied so that the copper foil circuit pattern can be seen through.

Next, a recess 32 is formed in the rear panel 31 of the cabinet 2, and a plurality of openings 36a to 36f are provided in a vertical back wall 33 of the recess 32. Further, cutouts 37a to 37f are formed in the horizontal lower wall 34 of the recess 32 so as to be continuous with the openings 36a to 36f, respectively. Note that each of the notches 37a to 37f is formed to have the same dimensions as each of the protrusions 25a to 25f of the printed circuit board 20, respectively.

A printed circuit board 20 configured as described above is placed in the cabinet 2 as shown in FIG.
The connectors 27c, 27d and 27f project outward from the openings 36c, 36d and 36f, respectively, and the protrusions 25a to 25a of the printed circuit board 20 respectively.
25f is fitted into each of the notches 37a to 37f, thereby closing each of these notches 37a to 37f. Note that a bottom plate 39 is attached to the lower part of the cabinet 2.

By the way, at this time, since the color of the resist 29 of the printed circuit board 20 is the same color as the black of the cabinet 2,
Even if the printed circuit board 20 inside the cabinet 2 is visible through each of the openings 36a to 36f, there is no appearance of discomfort. Moreover, as in this embodiment, the connector 27
If the openings 36a, 27b, and 27d are not provided, the printed circuit board 20 can be completely seen through the openings 36a, 36b, and 36d, but there is no sense of discomfort. Therefore, connectors 27a, 27b and 27d
Even in a specification in which the openings 36a, 36b, and 36c are formed in order to provide these, the cabinet 2 is used as is.

Further, since there is no discomfort even when the printed circuit board 20 is visible, it becomes possible to use the printed circuit board 20 as a part of the cabinet 2, and thereby, the printed circuit board 20 can be inserted into the cabinet 2.
Installation of the 0 is extremely simple. That is, since each of the notches 37a to 37f is provided continuously to each of the openings 36a to 36f of the cabinet 2,
Connect each connector 27a to 27f to each notch 37a to 3
7f, and insert the printed circuit board 20.
While keeping it horizontal, move it vertically from below the cabinet 2 into the cabinet 2 (in the direction of arrow c in Figure 1).
It can be installed by inserting it into the The protrusions 25a to 25f of the printed circuit board 20 become part of the cabinet 2, and the cutouts 37a to 37f of the cabinet 2 are closed.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various effective changes can be made based on the technical idea of the present invention.

Note that the present invention is not limited to printed circuit boards for compact disc players, but can be widely applied to printed circuit boards for various electronic devices.

[Effect of idea]

In this invention, by making the color of the resist applied to at least the surface on which the connector is attached to the printed circuit board the same color as the color of the cabinet, even if the printed circuit board inside the cabinet is visible from the opening of the cabinet, there is no external appearance. There is no sense of discomfort, and the appearance can be greatly improved.

Furthermore, since there is no discomfort even if the printed circuit board is completely visible through the opening, it is possible to share a cabinet with a specification without a connector and a cabinet with a specification with a connector. Therefore, there is no need to prepare dedicated cabinets for each device depending on whether it has a connector or not.
Sharing can significantly reduce costs.

Furthermore, by making the color of the resist on the printed circuit board the same as the color of the cabinet, the printed circuit board can be used as a part of the cabinet. Therefore, as in the embodiment, by providing a continuous notch in the opening and configuring the protrusion to fit into the notch, the printed circuit board can be easily inserted when the connector is placed in the opening. The printed circuit board can be attached to the cabinet by vertically inserting it into the cabinet while it is in a horizontal position. In other words, there is no need to tilt the printed circuit board, insert the connector into the opening in advance, and then rotate the printed circuit board to install it.In addition, the assembly work can be performed extremely easily. Accidental damage can also be prevented.

Moreover, since the color of the resist on the printed circuit board is the same as the color of the cabinet, there is no need to specially color the printed circuit board, and there is no increase in cost due to the use of the same color.

[Brief explanation of drawings]

The drawings show an embodiment in which the present invention is applied to a printed circuit board for a compact disc player. Figure 1 is an exploded perspective view of the main parts before the printed circuit board is installed in the cabinet, and Figure 2 is an exploded perspective view of the main parts after installation. A perspective view of the main parts, FIG. 3 is a perspective view of the main body of the player. In addition, in the symbols used in the drawings, 2...cabinet, 20...printed circuit board,
22...Component mounting surface, 25a-25f...Protrusion, 27a-27f...Connector, 29...Resist, 31...Rear panel, 36a-36f...
Openings, 37a to 37f...notches.

Claims (1)

[Scope of Claim for Utility Model Registration] A printed circuit board for an electronic device configured such that a printed circuit board to which a connector is attached is arranged in a cabinet, and the connector faces an opening provided in the cabinet, comprising: 1. A printed circuit board for an electronic device, characterized in that a resist applied to at least the surface on which the connector is attached is made of a resist of the same color as the color of the cabinet.