JP4849153B2 - Operation indicator - Google Patents

Description

  The present invention relates to an operation display.

  2. Description of the Related Art Conventionally, there has been provided an operation indicator that is integrally provided with an operation unit and a display unit.

  The operation indicator is used, for example, in a monitoring control device of a remote monitoring control system that performs load monitoring control by communication. In this type of remote monitoring and control system, an operation indicator (monitoring control device) and one or more loads (terminals) monitored by the operation indicator are connected by a two-wire signal line.

  The operation indicator controls the load by transmitting a control signal corresponding to the operation to the load via the signal line when the operation unit is operated by the user.

  The operation indicator monitors the state of each load, and displays the state of each load based on a monitoring signal received from each load via a signal line. A transmission device is provided as a center device, and a control signal transmitted from the operation indicator is transmitted to the load via the transmission device, or a monitoring signal transmitted from the load is transmitted via the transmission device to the operation indicator. Some also send to.

  As an example of the remote monitoring and control system provided with the transmission device, there is one provided with lighting fixtures L1 to L4 as loads as shown in FIG. Each of the lighting fixtures L1 to L4 is connected to the remote control relays Ry1 to Ry4, and the power supply (AC 100 to 200V) is turned on / off by the on / off of the remote control relays Ry1 to Ry4, and is controlled to be turned on / off.

  The on / off control of the remote control relays Ry1 to Ry4 is performed by the control terminal 32 connected to the remote control relays Ry1 to Ry4. Here, for driving the remote control relays Ry1 to Ry4, an AC 24V power source supplied from a remote control transformer Tr1 that steps down and outputs a commercial power source (AC 100V) is used.

  The control terminal 32 is connected to the transmission unit 30 via a two-wire signal line Ls. In addition to the control terminal 32, an operation terminal 31 including a plurality of switches S1 and S2 and an operation indicator B (monitoring control device) are connected to the signal line Ls. In the example of FIG. 4, one control terminal 32 and one operation display B are shown, but in reality, a plurality of each are assumed to be connected.

  The transmission unit 30 is supplied with power (AC 100V to 200V) from a commercial power source and periodically transmits a transmission signal to the signal line Ls. As the transmission signal, for example, a bipolar pulse width modulation signal of ± 24V is used. In the operation indicator B, the control terminal 32, and the operation terminal 31, an internal power source is secured by full-wave rectifying this transmission signal. In the operation display B, the remote control transformer Tr2 may be connected separately, and when the power of the entire system is insufficient, 24 V AC power may be supplied from the remote control transformer Tr2.

  In the remote monitoring control system, when the switch of the operation terminal 31 is operated, the address and the load number of the terminal corresponding to the switch are collated in the transmission unit 30, and the correspondence relationship with the switch is set. A transmission signal for instructing control of the load is transmitted from the transmission unit 30 to the control terminal 32 connected to the load. With such an operation, switch on / off information can be reflected in the load control.

  Further, the operation display B can instruct the control of each load in place of the operation terminal 31 and displays the load state on the display. Here, the operation terminal B includes switches having the same number of circuits as the total number of switches included in each operation terminal 31, and is connected to the transmission unit 30 through the signal line Ls to instruct control of all loads L1 to L4. Can be entered.

  As the operation indicator B, for example, a liquid crystal device (display unit) having a display surface (liquid crystal surface) formed on one surface, and a transparent plate-like touch panel (operation unit) arranged to overlap the display surface of the liquid crystal device. ) Is known (for example, see Patent Document 1).

  And as shown in FIGS. 5-8, the operation indicator is formed in a substantially rectangular box shape having a concave portion 1a on the front surface by resin molding, and the instrument main body 1 fitted into the construction surface 6 together with the power supply unit 9, The substantially rectangular parallelepiped liquid crystal device 2 housed in the recess 1a of the appliance main body 1, the transparent substantially rectangular plate-shaped touch panel 3 disposed on the front surface of the liquid crystal device 2, the rear surface of the liquid crystal device 2, and the recess 1a. , A control board 20 housed in between, a substantially rectangular frame-shaped nameplate 4 provided on the front surface of the instrument body 1, and a substantially rectangular frame-shaped metal plate 5 provided on the outer periphery of the instrument body 1. . Hereinafter, the description will be made with reference to the vertical and horizontal directions in FIG.

  As shown in FIG. 8, the instrument body 1 includes a substantially rectangular box-shaped body 11 having an open front surface and a substantially flat cover 12 that covers the front surface of the body 11. A first connector 111 is provided on the inner bottom surface of the body 11, and the first connector penetrates the bottom surface of the body 11 and is exposed from the rear surface of the body 11.

  The cover 12 has an opening 121 having a substantially rectangular frame shape, and a step 122 is formed along the opening 121 at the periphery of the opening 121, and the step 122 has the recess 1 a together with the inner surface of the body 11. Form.

The liquid crystal device 2 is housed in the recess 1a of the instrument body 1 and has a substantially rectangular parallelepiped shape with a liquid crystal screen on the front surface. The backlight is integrated and a matrix display in which a large number of pixels are arranged vertically and horizontally in a matrix. The type is used and displays characters and figures by combining pixels.
The touch panel 3 uses a resistance pressure-sensitive type device in which a large number of contact portions made of transparent electrodes are arranged on a transparent sheet-like member, and which part is touched when a finger touches the sheet-like member. The electrode 3b is provided at the end 3a. The touch panel 3 is attached and fixed to the step portion 122 by the double-sided tape 13 attached to the step portion 122 of the cover 12. Thereby, the touch panel 3 is disposed so as to overlap the liquid crystal device 2 provided in the body 111, and the end surface 3a faces the inner wall of the recess 1a.

  Information is input based on the combination of the type of characters and figures displayed on the liquid crystal device 2 and the place where the finger touches the touch panel 3. That is, the liquid crystal device 2 and the touch panel 3 constitute a touch panel display.

  The touch panel display is for receiving an operation input from a user. For example, as shown in FIG. 9, a load is applied to the position of the touch panel 3 corresponding to a plurality of operation buttons b1 to b8 displayed on the liquid crystal device 2. A control switch is provided. That is, the user can control the load corresponding to the switch by touching the load control switch.

  When the load control switch is touched, an operation signal is transmitted from the touch panel 3 to the control board 20, and the control board 20 converts the operation signal into a control signal and transmits the control signal to the load. The operation based on is performed.

  In addition, the monitoring signal transmitted from each load is received by the control board 20, and the control board converts the monitoring signal into a display signal and then transmits the display signal to the liquid crystal device 2. The liquid crystal device 2 performs display based on the display signal.

  The nameplate 4 is printed with an address of the operation indicator and the like, and is fixed by a substantially rectangular frame-shaped double-sided tape 7 (see FIG. 10) attached to the front surface of the instrument body 1 so as to avoid the touch panel 3. Here, since the nameplate 4 has a substantially rectangular frame shape, the display surface of the liquid crystal device 2 is not covered with the nameplate 4 even when the nameplate 4 is attached to the appliance body 1.

  The power supply unit 9 is formed in a substantially rectangular box shape with a concave portion 9a formed on the front surface, and a mounting plate 92 extends vertically from the front ends of the upper surface and the lower surface. Further, as shown in FIG. 12, a plurality of terminals 93 are provided on the rear surface of the power supply unit 9, and a power supply terminal to which a power supply power supply line is connected or a signal terminal to which a signal line is connected. Used as Further, below the plurality of terminals 93, as shown in FIG. 13, there is a slide switch that switches between a mode for securing an internal power source from a transmission signal and a mode for receiving power supply from the remote control transformer Tr2. Is provided.

  Then, as shown in FIG. 11, the instrument main body 1 has the rear end of the body 11 fitted in the recess 9 a of the power supply unit 9, and fits the rear end in the mounting hole H formed in the construction surface 6 together with the power supply unit 9. It is attached to the construction surface 6 in the form. Here, when the body 11 is fitted in the recess 9a of the power supply unit 9, the first connector 111 provided in the body 11 is inserted into the second connector 91 provided in the recess 9a, and the first, The second connectors 111 and 91 are electrically and mechanically connected.

  As a result, the control board 20 is supplied with driving power from an external power source connected to the terminal 93 of the power supply unit 9 via the first and second connectors 111 and 91 via the power supply line. A monitoring signal is received from a load connected via a communication line, or a control signal is transmitted to the load.

  The metal plate 5 includes a plate frame 51 that is fixed by inserting a plate screw (not shown) through an insertion hole 92a formed in the attachment plate 92 of the power supply unit 9 and screwing it into the construction surface, and the plate screw and attachment. A metal plate cover 52 for covering the hole H and the mounting plate 92 is provided.

  The plate frame 51 includes a front plate 51 a formed in a substantially rectangular frame shape, and a holding piece 51 b that extends rearward from the peripheral edge of the front plate 51 a and surrounds the peripheral surface of the instrument body 1. The front plate 51a is provided with an exposure window 511 for exposing the front surface of the touch panel 3, and an insertion hole 512 through which a plate screw is inserted.

The plate cover 52 includes a front wall 52a that covers the front surface of the plate frame 51, and a peripheral wall 52b that surrounds the plate frame 51 so as to face the holding piece 51b. The peripheral wall 52b is slidably contacted with the holding piece 51b of the plate frame 51. However, due to the frictional force between the holding piece 51b of the plate frame 51 fitted to the plate frame 51 from the front side of the plate frame 51 and the peripheral wall 52b of the plate cover 52 and attachment means (not shown), the plate cover 52 is attached to the plate frame 51. 51.

  On the front wall 52a of the plate cover 52, an exposure window 521 for exposing the touch panel 3 is opened. The exposure window 521 is formed to be substantially the same as the size of the front surface of the instrument body 1, and the instrument body 1 fits into the exposure window 521 of the plate cover 52 without a gap.

  From the front plate 51a of the plate frame 51, a spacer 51c that abuts against the rear surface of the front wall 52a of the plate cover 52 protrudes forward, and the front wall 52a of the plate cover 52 is provided on the instrument body 1 as shown in FIG. The spacer 51c contacts the rear surface of the front wall 52a of the plate cover 52 at a position surrounding the front end portion of the peripheral surface.

JP 2008-9750 A

  It is conceivable that the operation indicator having the above configuration touches the metal plate 5 at the time of construction or operation.

  However, when the user touches the metal plate 5 in a charged state, a high voltage (for example, about 15 kV) due to static electricity is applied to the metal plate 5, and as shown by the arrow in FIG. A high voltage is applied to the electrode 3 b provided on the end surface of the touch panel 3 through the double-sided tape 7 along the surface of the touch panel 3. Then, there is a possibility that the touch panel 3 outputs an erroneous operation signal and the load malfunctions, or the touch panel 3 is broken down.

  The present invention has been made in view of the above reasons, and an object thereof is to prevent a high voltage from being applied to the electrodes of the touch panel even when a high voltage due to static electricity is applied to the metal plate. It is to provide an operation indicator.

  The invention of claim 1 is attached to the construction surface in a form in which the rear portion is housed in an attachment hole formed in the construction surface, and the front surface is exposed to the concave portion of the instrument body, with the concave portion formed on the front surface. A display unit that is stored and can display characters and figures on the front surface, and is formed in a plate shape with electrodes provided on at least one end surface, and is placed on the front surface of the display unit and is disposed on the inner wall of the recess in the instrument body. Are provided to face each other and receive an operation input from a user, a metal plate provided on the outer periphery of the instrument body, and provided along the peripheral edge of the opening of the recess in the instrument body. And an insulating means for insulating between.

  According to the present invention, by providing an insulating means for insulating between the metal plate and the electrode of the operation unit, the insulation strength between the metal plate and the electrode of the operation unit is increased, and the static electricity applied to the metal plate It is possible to prevent a high voltage from being applied to the electrode of the operation unit, to prevent a malfunction of the load due to the operation unit transmitting an erroneous operation signal, and to prevent the operation unit from being broken down.

  According to a second aspect of the present invention, in the first aspect of the invention, the insulating means is an insulating tape that is affixed so as to conceal the front surface of the boundary between the inner wall of the recess and the end surface of the operation portion in the instrument body. And

  According to the present invention, by attaching the insulating tape so as to conceal the front surface of the boundary between the inner wall of the recess and the end surface of the operation unit in the instrument body, the metal plate and the electrode of the touch panel can be easily formed without processing. The insulation strength between them can be increased, and a high voltage due to static electricity applied to the metal plate can be prevented from being applied to the electrodes of the operation unit.

  The invention of claim 3 is characterized in that, in the invention of claim 1, the insulating means is a rib projecting from the front surface of the instrument body along the peripheral edge of the opening of the recess.

  According to the present invention, the ribs project from the front surface of the instrument body along the opening periphery of the recess of the instrument body, and the creepage distance from the metal plate to the end surface of the operation unit is increased, so that the metal plate and the touch panel The insulation strength between the electrodes can be increased, and a high voltage due to static electricity applied to the metal plate can be prevented from being applied to the electrodes of the operation unit.

  According to a fourth aspect of the present invention, in the first aspect of the invention, the insulating means includes an insulating tape that is attached so as to conceal a front surface of a boundary between the inner wall of the concave portion and the end surface of the operation portion in the instrument body, and the opening of the concave portion. It is comprised with the rib projected from the front surface of the instrument main body along the periphery.

  According to this invention, the insulating tape is affixed so as to conceal the gap between the inner wall of the recess and the end surface of the operation portion in the instrument body, and the rib is projected from the front surface of the instrument body along the opening periphery of the recess. Thus, the insulation strength between the metal plate and the electrode of the operation unit can be further increased, and it is possible to further prevent the high voltage due to static electricity applied to the metal plate from being applied to the electrode of the operation unit. it can.

  As described above, in the present invention, by increasing the insulation strength between the metal plate and the electrode of the operation unit, high voltage due to static electricity applied to the metal plate is prevented from being applied to the electrode of the operation unit. Thus, there is an effect that it is possible to prevent the malfunction of the load due to the operation unit sending an erroneous operation signal and the operation unit from being broken down.

The principal part enlarged view of the operation indicator in Embodiment 1 of this invention is shown. The principal part enlarged view of the operation indicator in Embodiment 2 of this invention is shown. The principal part enlarged view of the operation indicator in Embodiment 3 of this invention is shown. The block diagram of the remote monitoring control system using the operation indicator in a prior art example is shown. The perspective view of the operation indicator in the same as the above is shown. Sectional drawing of the operation indicator in the same as the above is shown. The principal part enlarged view of the operation indicator in the same as the above is shown. The disassembled perspective view of the operation indicator in the same as the above is shown. The front view which removed the metal plate from the operation indicator in the same as the above is shown. The front view which removed the nameplate from the operation indicator in the same as the above is shown. A perspective view of the operation indicator and the power supply unit in the same as above is shown. A perspective view of the operation indicator and the power supply unit in the same as above is shown. The rear view of the power supply unit connected to the operation indicator in the same as the above is shown.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
The operation indicator of this embodiment is demonstrated using FIG. However, structures common to those of the prior art shown in FIGS. The description will be made assuming that the vertical and horizontal directions in FIG. 1 are front and rear and right and left, and the direction orthogonal to the front and rear horizontal directions is the vertical direction.

  As shown in FIG. 1, the operation indicator in the present embodiment has an insulating tape 8 attached from the front so as to close the gap 14 between the inner wall of the recess 1 a of the instrument body 1 and the end surface 3 a of the touch panel 3. However, this is different from the operation display shown in the conventional example.

  The insulating tape 8 has the gap 14 in a limited space formed between the instrument body 1 and the nameplate 4 by the thickness of the double-sided tape 7 by the double-sided tape 7 for attaching the nameplate 4 to the instrument body 1. Affixed to close. Therefore, the thickness of the insulating tape 8 is equal to or less than the thickness of the double-sided tape 7. Thereby, the insulating tape 8 can be easily affixed without performing special processing or the like on the conventional operation indicator.

  Here, even if a user charged during construction or operation touches the metal plate 5 and a high voltage (for example, about 15 kV) due to static electricity is applied to the metal plate 5, the insulation strength of the insulating tape 8 is large. It is possible to prevent a high voltage due to static electricity from being applied to the electrode 3 b of the touch panel 3.

  Therefore, in the operation indicator of this embodiment, even if the insulation strength between the metal plate 5 and the electrode 3b of the touch panel 3 is increased by the insulating tape 8, and a high voltage due to static electricity is applied to the metal plate 5, It is possible to easily prevent a high voltage due to static electricity from being applied to the electrode 3b of the touch panel 3, and to prevent malfunction of the load due to the touch panel 3 sending an erroneous operation signal and insulation breakdown of the touch panel 3. be able to.

(Embodiment 2)
The operation indicator of this embodiment is demonstrated using FIG. However, structures common to those of the prior art shown in FIGS. The description will be made assuming that the vertical and horizontal directions in FIG. 2 are front and rear and right and left, and the direction orthogonal to the front and rear horizontal directions is the vertical direction.

  As shown in FIG. 2, the operation indicator in this embodiment is a conventional example in which ribs 1 b are projected from the front surface of the cover 12 in the instrument body 1 along the opening periphery of the recess 1 a of the instrument body 1. The operation indicator is different.

  The rib 1b has a tip at the name plate 4 in a limited space formed between the device main body 1 and the name plate 4 by the thickness of the double-sided tape 7 by the double-sided tape 7 for attaching the name plate 4 to the device main body 1. It is formed at a height that does not interfere. That is, the rib 1b is formed between the instrument body 1 and the nameplate 4 at a height equal to or less than the thickness of the double-sided tape 7 from the front surface of the instrument body 1. Thereby, about components other than the cover 12 of the instrument main body 1, a conventional component can be used, and it is only necessary to project the rib 1b on the cover 12 as well.

  Here, even if a charged user touches the metal plate 5 at the time of construction or operation and a high voltage (for example, about 15 kV) due to static electricity is applied to the metal plate 5, the amount of the rib 1 b is formed. The creepage distance from the metal plate 5 to the electrode of the touch panel 3 along the surface of the instrument body 1 is longer than that of the operation indicator. Therefore, the insulation strength between the metal plate 5 and the electrode 3b of the touch panel 3 is higher than before.

  Therefore, in the operation indicator of this embodiment, the rib 1b is formed, whereby the insulation strength between the metal plate 5 and the electrode 3b of the touch panel 3 is increased, and a high voltage due to static electricity is applied to the metal plate 5. Even if applied, it is possible to easily prevent a high voltage due to static electricity from being applied to the electrode 3b of the touch panel 3, malfunction of the load due to the touch panel 3 transmitting an erroneous signal, and insulation of the touch panel 3 Destruction can be prevented.

(Embodiment 3)
The operation indicator of this embodiment is demonstrated using FIG. However, structures common to those of the prior art shown in FIGS. The description will be made assuming that the upper, lower, left, and right in FIG.

  As shown in FIG. 3, the operation indicator in the present embodiment has an insulating tape 8 attached from the front so as to close the gap 14 between the inner wall of the recess 1 a of the instrument body 1 and the end surface 3 a of the touch panel 3. The point which the rib 1b protrudes from the front surface of the instrument main body along the opening periphery of the recessed part 1a differs from the operation indicator of a prior art example. In addition, about the structure of the insulating tape 8 and the rib 1b, since it is common in Embodiment 1 and 2, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  Here, even when a charged user touches the metal plate 5 during construction or operation and a high voltage (for example, about 15 kV) due to static electricity is applied to the metal plate 5, the rib 1b is formed. The creepage distance from the metal plate 5 to the electrode of the touch panel 3 along the surface of the instrument body 1 is longer than that of the conventional operation indicator, and the insulation strength between the metal plate 5 and the electrode 3b of the touch panel 3 is higher than that of the conventional operation indicator. Is also expensive.

  Furthermore, since the insulating tape 8 is affixed, the insulation resistance between the metal plate 5 and the electrode 3b of the touch panel 3 is further increased, and a high voltage due to static electricity applied to the metal plate 5 is increased. Application to the electrode 3b can be further prevented.

  Therefore, in the operation indicator of the present embodiment, the insulation strength between the metal plate 5 and the electrode 3b of the touch panel 3 is further increased by the insulating tape 8 and the rib 1b, and the electrode 3b of the touch panel 3 has a high voltage due to static electricity. Can be further prevented, and the malfunction of the load due to the touch panel 3 transmitting an erroneous signal and the insulation breakdown of the touch panel 3 can be easily prevented.

DESCRIPTION OF SYMBOLS 1 Instrument main body 1a Recessed part 2 Liquid crystal device (display part)
3 Touch panel (operation unit)
3a End face 3b Electrode 4 Name plate 5 Metal plate 6 Construction surface 8 Insulating tape

Claims (4)

An instrument body that is attached to the construction surface in a form that fits the rear part in the mounting hole formed on the construction surface, and a recess is formed on the front surface,
A display unit that is stored in a state where the front surface is exposed in the recess of the instrument body, and can display characters and figures on the front surface,
An operation unit which is provided with an electrode on at least one end surface, is formed in a plate shape, is disposed so as to overlap the front surface of the display unit, and has an end surface facing the inner wall of the recess in the instrument body, and receives an operation input from a user When,
A metal plate provided on the outer periphery of the instrument body;
An operation indicator, comprising an insulating means provided along the periphery of the opening of the recess in the instrument main body and insulating between the metal plate and the electrode of the operation unit.   2. The operation indicator according to claim 1, wherein the insulating means is an insulating tape attached so as to conceal the front surface of the boundary between the inner wall of the recess and the end surface of the operation portion in the instrument body.   2. The operation indicator according to claim 1, wherein the insulating means is a rib protruding from the front surface of the instrument body along the opening periphery of the recess. The insulating means includes an insulating tape attached so as to conceal a front surface of a boundary between the inner wall of the concave portion and the end surface of the operation portion in the instrument main body, and a rib protruding from the front surface of the instrument main body along the opening periphery of the concave portion. The operation indicator according to claim 1, comprising:

Images