JP2011060597A - Annunciator - Google Patents

Abstract

Visibility is improved by reducing the distance between a sheet key and a printed circuit board on which an LED is mounted, and the sheet key and the printed circuit board are connected to each other without providing a cable and a connector, thereby forming an ultra-thin structure. .
A sheet key 2 having a conductor 2b formed at a position corresponding to an operation key portion 2a, and a conductor 3a having an open contact at a position facing the conductor 2b formed on the sheet key 2, A sheet board 2 and a printed circuit board 3 are provided.
[Selection] Figure 1

Description

  The present invention relates to an annunciator that manages, for example, equipment.

An annunciator that manages equipment using a display device composed of multiple operation key sections and LEDs (Light Emitting Diodes) corresponding to the operation key sections is an intuitive interface that can display a list of many management points. There are those using a mechanical switch (for example, see Patent Document 1) and those using a touch panel.
Since these annunciators are simpler operation terminals than those using a PC (Personal Computer) LCD (Liquid Crystal Display) or the like, there is still a high demand even now that PCs have become widespread.

  However, the annunciator is inferior in the display power of the display compared with the LCD, and the price and thickness of the LCD are decreasing year by year due to the increase in the number of production and technological advancement. Therefore, in order to provide an annunciator in the future, thorough cost reduction and thickness reduction are required.

  Therefore, there is an annunciator configured to be thin by using a sheet key in contrast to an annunciator using a mechanical switch or a touch panel as disclosed in Patent Document 1 (see, for example, Patent Documents 2 and 3).

  As shown in FIG. 4, an annunciator 100 disclosed in Patent Documents 2 and 3 includes a plurality of sheets 105 in which a conductor 103 and a resist (insulator) 104 are formed on a printed circuit board 102 on which an LED 101 is mounted. And a sheet key 107 in which a plurality of operation key portions 107 a are formed by overlapping the surface sheet 106 and the like, and a frame 108 that accommodates the printed circuit board 102 and the sheet key 107, and an administrator forms the sheet key 107. By pressing the desired operation key portion 107a (arrow B shown in FIG. 4), the conductors 103 arranged above and below the operation key portion 107a are conducted and pressed against the printed circuit board 102 via the cable 109 and the connector 110. Communicating contact information of the location.

Japanese Patent Laid-Open No. 5-115091 JP 2003-140809 A JP-A-2005-250759

However, also in the annunciator 100 using the sheet key 107 disclosed in Patent Documents 2 and 3, as shown in FIG. 4, the sheet key 107 is disposed between the sheet key 107 and the printed circuit board 102 on which the LED 101 is mounted. Since it is necessary to provide the flat portion 108a protruding from the frame 108 for pasting, a distance is generated between the LED 101 and the surface of the sheet key 107, and the visibility from the oblique direction when the LED 101 emits light is particularly bad. There was a problem.
Further, since it is necessary to provide the cable 109 and the connector 110 in order to transmit a signal output when the upper and lower conductors 103 of the sheet key 107 are conducted to the printed circuit board 102, factors that prevent the annunciator 100 from being thinned. There was a problem of becoming.

  The present invention has been made to solve the above-described problems. By reducing the distance between the sheet key and the printed board on which the LED is mounted, the visibility of light emission by the LED can be improved. An object of the present invention is to provide an annunciator that can be configured to be ultra-thin by connecting a sheet key and a printed board without providing a cable and a connector.

  The annunciator according to the present invention includes a sheet key having a conductor formed at a position corresponding to the operation key portion, and an open contact conductor formed at a position facing the conductor formed on the sheet key. And a printed circuit board to be overlaid.

  According to the present invention, since it is configured as described above, the sheet on which the conductor is formed corresponding to the operation key and the printed circuit board on which the open contact conductor is formed at a position opposite to the conductor are attached. By combining them, an annunciator that is ultra-thin and highly visible from an oblique direction can be configured. In addition, the cost can be reduced by reducing the number of components.

It is a disassembled perspective view which shows the structure of the annunciator which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the structure of the annunciator which concerns on Embodiment 1 of this invention. It is a disassembled perspective view which shows the structure of the sheet | seat key in Embodiment 1 of this invention. It is a sectional view which shows the structure of the conventional annunciator.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is an exploded perspective view showing a configuration of an annunciator 1 according to Embodiment 1 of the present invention. FIG. 1A is an exploded perspective view from the front side, and FIG. 1B is an exploded perspective view from the back side. FIG. 2 is a cross-sectional view showing the configuration of the annunciator 1 according to Embodiment 1 of the present invention.
The annunciator 1 includes a sheet key 2, a printed board 3, and a resin frame 4, as shown in FIGS.

  The sheet key 2 is a sheet-like switch formed with a plurality of operation key portions 2a for performing operations in response to an abnormality or the like of facility equipment managed by an administrator. As shown in FIG. 1B, conductive ink (conductor) 2b is formed on the back surface of the sheet key 2 at a position corresponding to the operation key portion 2a by printing. Further, an opening 2c for avoiding contact with the LED 3b and transmitting light from the LED 3b is formed at the position of the sheet key 2 facing the LED 3b mounted on the printed board 3 to be described later. As shown in FIG. 2, the operation key portion 2a is formed with a card pocket 2d for inserting a card in which the name or function of each operation key portion 2a is written.

  The printed circuit board 3 emits and extinguishes the LED 3b corresponding to the pressed operation key part 2a in response to the pressing of the operation key part 2a formed on the sheet key 2 by the administrator. As shown in FIG. 1 (a), an open contact conductor 3a is formed on the surface of the printed circuit board 3 at a position facing the conductive ink 2b formed on the sheet key 2 by pattern printing. An ultra-thin (for example, about 0.2 mm) LED 3b that emits light toward the sheet key 2 side is mounted corresponding to the operation key portion 2a. The printed circuit board 3 is overlaid on the sheet key 2 and attached with an adhesive or the like.

  The resin frame 4 holds the sheet key 2 and the printed circuit board 3. On the upper surface of the resin frame 4, there is formed an accommodating portion 4a for accommodating and holding the stuck sheet key 2 and the printed circuit board 3.

Next, details of the sheet key 2 configured as described above will be described.
FIG. 3 is an exploded perspective view showing the configuration of the sheet key 2 according to Embodiment 1 of the present invention. 3A is an exploded perspective view from the front side, and FIG. 3B is an exploded perspective view from the back side.
As shown in FIG. 3, the sheet key 2 includes a surface sheet 5, a card spacer 6, a base sheet 7, and a resist layer 8.

  The top sheet 5 is for holding and displaying a card in which the name or function of the annunciator 1 is written, and is formed by making a portion of the transparent polyester or the like opaque by printing. As shown in FIG. 3 (a), on the top sheet 5, an operation key portion 5a for an operator to select and operate a facility device or the like to be managed is entered on a card inserted at the bottom. The transparent portion 5b for transmitting light from the LED 3b to a position corresponding to the LED 3b mounted on the printed circuit board 3 so as to be visible so that the characters can be visually recognized. Is formed transparent by not printing.

  The card spacer 6 is formed with a space 6a for inserting a card in which the name or function of each operation key portion 2a is written at a position corresponding to the operation key portion 5a formed on the top sheet 5. is there. In addition, an opening 6b is formed at a position corresponding to the LED 3b mounted on the printed circuit board 3 to avoid contact with the LED 3b and to transmit light from the LED 3b.

  When the operation key portion 2a formed on the sheet key 2 is pressed by the administrator, the base sheet 7 corresponds to the pressed operation key portion 2a, and 2 of the open contacts formed on the printed circuit board 3. Two conductors 3a are conducted. As shown in FIG. 3B, the conductive ink 2 b is formed on the back surface of the base sheet 7 at a position corresponding to the operation key portion 5 a formed on the top sheet 5 by printing. Further, an opening 7a is formed at a position corresponding to the LED 3b mounted on the printed circuit board 3 so as to avoid contact with the LED 3b and transmit light from the LED 3b.

  The resist layer 8 is for insulating the sheet key 2 and the printed board 3 and is made of a resist (insulator). In the resist layer 8, an opening 8 a is formed at a position corresponding to the conductive ink 2 b formed on the base sheet 7. In addition, an opening 8b is formed at a position corresponding to the LED 3b mounted on the printed circuit board 3 to avoid contact with the LED 3b and to transmit light from the LED 3b.

  The sheet key 2 is configured by stacking the surface sheet 5, the card spacer 6, the base sheet 7, and the resist layer 8, which are configured as described above, and attaching them with an adhesive or the like.

Next, the operation of the annunciator 1 configured as described above will be described.
As shown in FIG. 2, when a manager who manages equipment and equipment operates the equipment and the like, when a desired operation key portion 2 a formed on the sheet key 2 is pressed (arrow shown in FIG. 2). A) With the conductive ink 2b corresponding to the operation key part 2a, the two conductors 3a of the open contact formed on the printed circuit board 3 are conducted to close the contact.

Here, since the sheet key 2 is directly attached to the printed circuit board 3, the distance between the LED 3b mounted on the printed circuit board 3 and the surface of the sheet key 2 can be reduced. Visibility can be improved.
Also, the conductive ink 2b is formed at a position corresponding to the operation key portion 2a of the sheet key 2, and the open contact conductor 3a is formed at a position on the printed circuit board 3 opposite to the conductive ink 2b. Therefore, since the signal can be directly output to the printed circuit board 3 by conducting the two conductors 3a having the open contacts with the conductive ink 2b, it is necessary to provide the sheet key 2 and the printed circuit board 3 with cables and connectors. Eliminates and can be configured to be ultra-thin.

  As described above, according to the first embodiment of the present invention, the sheet key 2 on which the conductive ink 2b is formed at the position corresponding to the operation key portion 2a, and the open contact conductive at the position facing the conductive ink 2b. Since the printed circuit board 3 on which the body 3a is formed is overlapped, the distance between the sheet key 2 and the LED 3b mounted on the printed circuit board 3 can be shortened, so that the visibility of light emission by the LED 3b is improved. can do. In addition, a signal indicating that the operation key portion 2a formed on the sheet key 2 is pressed by the administrator can be directly output to the printed circuit board 3 without providing a cable and a connector on the sheet key 2 and the printed circuit board 3. Therefore, it can be configured to be ultra-thin and cost reduction can be realized.

  Further, in the conventional annunciator, a signal output when the conductor formed facing the upper and lower sheets of the sheet key is conducted is transmitted to the printed circuit board. However, according to the first embodiment of the present invention. In the annunciator 1, the sheet key 2 is configured to output a signal by conducting the open contact conductor 3 a formed on the printed circuit board 3 with the conductive ink 2 b formed on the base sheet 7 of the sheet key 2. Since the number of the two layers can be reduced, the cost can be further reduced. Furthermore, the number of assembly steps can be reduced by reducing the number of parts of the sheet key 2 and the number of cables and connectors.

  In the annunciator 1 according to Embodiment 1 of the present invention, the ultrathin LED 3b is provided on the surface of the printed circuit board 3. However, the present invention is not limited to this. For example, an opening is formed in the printed circuit board 3. The LED may be formed and provided on the back surface of the printed circuit board 3 to irradiate the sheet key 2 side.

  In the sheet key 2 according to Embodiment 1 of the present invention, the top sheet 5, the base sheet 7 on which the conductive ink 2b is formed, and the resist layer 8 composed of the resist are separately formed and stacked. The conductive ink 2b and the resist may be directly formed on the back surface of the top sheet 5. With this configuration, the number of layers of the sheet key 2 can be further reduced, and the configuration is made thinner. can do.

1 Annunciator 2 Sheet key 2a Operation key 2b Conductive ink (conductor)
2c Opening 2d Card pocket 3 Printed circuit board 3a Conductor 3b LED
4 Resin Frame 4a Housing 5 Surface Sheet 5a Operation Key 5b Transmission 6 Card Spacer 6a Space 6b Opening 7 Base Sheet 7a Opening 8 Resist Layers 8a and 8b Opening

Claims (2)

In the annunciator having the operation key part for managing the equipment,
A sheet key having a conductor formed at a position corresponding to the operation key portion;
An annunciator comprising: a printed circuit board on which a conductor having an open contact is formed at a position facing the conductor formed on the sheet key, and is superimposed on the sheet key. An LED (Light Emitting Diode) is mounted on the printed circuit board,
The annunciator according to claim 1, wherein the sheet key is formed with an opening at a position facing the LED.

Images