JP2000304339A - Electric apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance workability of maintenance work. SOLUTION: The frame is drawn out from the case body and detected by a detecting means and then the display screen of a display 24 is switched automatically from an ordinary screen to a screen for displaying parts to be maintained thus displaying the information of the type of maintainable electrical parts 16-19. The type information is displayed at a position corresponding to the arranging position of the electrical part on an apparatus. Detail information 35 of the electrical parts 16-19 is displayed by means of detail information display switches 34a-34d on a touch panel 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric device applied to an air conditioner or the like of an air conditioner control device, and more particularly to an electric device having a display device and capable of being pulled out inside a wall or a control panel.

[0002]

2. Description of the Related Art In an air-conditioning control device, operation / stop switching, setting and changing of operating conditions such as temperature and air flow are performed by an air-conditioning setting device mounted on a wall or the like.
Therefore, the air-conditioning setting device includes a display device for displaying a setting state, for example, a liquid crystal display (LCD), a push button switch, and the like, and is connected to the air-conditioning control device by a cable for signal transmission. In addition, a recent setting device of this type is provided with an external device such as a personal computer (PC) or a memory card (PC) at the time of setting and adjusting the temperature and the air volume.
Such a device is provided with an interface that enables connection such as a card.

As such an air-conditioning setting device, an electric device disclosed in Japanese Patent Application Laid-Open No. 9-322038 is known. In this electric device, a front opening of a case body embedded and installed in a control panel or a wall is covered with a front cover, and a frame is provided on the front cover so as to be able to be pulled out into the case body. Electrical parts that can be accessed only at the time, such as connectors, adjustment volume / switches, battery holders, slots for memory cards, etc., are provided so that an operator can access the electrical parts by pulling out the frame from the case body during maintenance. It was made.

[0004] The reason that access is allowed only during maintenance is as follows. Electric parts accessed only during maintenance (hereinafter referred to as access electric parts) need to be maintained only by a limited number of persons (maintenance workers) in order to prevent mischief by a third party. If the access electrical component is provided outside the device, dust and the like may enter. In order to prevent intrusion of dust and the like, it is necessary to attach a cover to the access electric component, so that not only the number of components increases, but also the cover may fall off or be damaged. If the access electric component is provided outside the device, the size of the device becomes larger, and it is not possible to meet the demand for further downsizing. To preserve the aesthetics of the interior design.

[0005]

However, the conventional electric devices disclosed in the above publications have the following problems. That is, for example, when connecting an external device to the connector provided on the side of the frame with a cable during maintenance work, if the connector is not visible due to the installation position of the device even if the frame is pulled out of the case main body, work by groping. Since it is inevitable, the position of the connector cannot be determined and the connection work takes time. In particular, in a device having a plurality of connectors, it is difficult to determine which connector should be connected, and it is difficult to make a decision. In addition, it is necessary to confirm the work precautions, the information on the access electric parts and the adjustment condition of the access electric parts during the work, but in the past, the work was performed while referring to the instruction manual in which such information was described. The work was troublesome. As another method, a maintenance screen is created as one of the screens displayed by the display device, and a maintenance screen is called by an operator performing a maintenance screen shift operation, and the maintenance screen is called. There is also a way to refer to the information above. However, when there are many types of screens, several steps of operation are required before information required for the maintenance is called. After the work is completed, it is necessary to return to the normal screen. However, this also requires several steps of operation, and if many such devices are to be maintained, the work efficiency is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide an electric device capable of improving workability during maintenance.

[0007]

According to a first aspect of the present invention, there is provided an electric apparatus installed on a control panel, a wall, or the like, comprising: a case body embedded in the control panel, the wall, etc .; A front cover detachably attached to the front side opening of the case body and having a display device, a frame attached to the front cover and retractably housed in the case body, and a frame attached to the frame. An electric component that can be accessed from outside when the frame is pulled out of the case main body, a detection unit that detects that the frame is pulled out of the case main body, and maintains the display device based on a detection signal from the detection unit. And a display control unit for switching to a screen for use. In the present invention, the detecting means detects that the frame has been pulled out of the case main body, and transmits a detection signal to the display control unit. The display control unit outputs a signal to the display device based on the detection signal from the detection unit, whereby the screen of the display device switches from a normal screen to a maintenance screen.

[0008] In a second aspect based on the first aspect,
The display device displays the type information of each electric component at a position on the maintenance screen corresponding to the arrangement position of the maintainable electric component on the device. In the present invention, the arrangement position of the electric component on the device can be known from the screen.

[0009] A third invention is the above-mentioned second invention, wherein:
A detailed information display switch is provided at a position corresponding to each accessible electric component displayed on a screen for maintenance of the display device on the touch panel. When a switch is operated, detailed information of an accessible electrical component is displayed on the maintenance screen. In the present invention, when the detailed information display switch is operated, the detailed information of the accessible electrical component is immediately displayed on the maintenance screen.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is an external perspective view showing an example in which the present invention is applied to an air-conditioning setting device of an air-conditioning control device, which is mounted on a control panel, FIG. 2 is a schematic sectional view taken along line II-II of FIG. FIG. 4 is a perspective view of the frame pulled out from the case main body as viewed obliquely from the front left, FIG. 4 is a perspective view of the frame pulled out of the case main body viewed diagonally from the right front, and FIG. , (A) is OF
FIG. 6 is a diagram showing a maintenance initial screen of the display device, FIG. 7 is a diagram showing a maintenance detail display screen of the display device, and FIG. 8 is a block diagram of the setting device. FIG.

In these figures, 1 is an air-conditioning control device,
Reference numeral 2 denotes a control panel, and reference numeral 3 denotes an air-conditioning setter for switching between operation and stop of the air-conditioning control device 1, and setting and changing operation states such as temperature and air volume.

The air-conditioning setting device 3 is a horizontally long box-shaped case main body 5 made of synthetic resin or the like and having an open front surface.
And a housing 7 comprising a front cover 6, and the case main body 5 is inserted into the mounting hole 2 a of the control panel 2 from the front, and is fixed by a plurality of screws (not shown). Also,
The air-conditioning setting device 3 includes a frame 8 attached to the inside of the front cover 6 and usually housed in the case main body 5 so as to be able to be pulled out.

The front cover 6 is formed of a synthetic resin or the like in the shape of a shallow box, is fitted to the front surface of the case body 5 from the front, and includes an elastic locking piece and a locking hole (not shown). By being detachably locked by engagement,
Normally, it covers the front opening 5a of the case body 5.
At the upper right corner of the front cover 6, a plurality of LEDs 9 indicating the operation state of the air conditioner 3 are arranged, and the frame 8 is fixed inside.

The frame 8 is formed in a box shape slightly smaller than the case body 5 by bending a metal plate, and constitutes a printed wiring board 15 and a connection portion with an external device as shown in FIG. 16 D-sub 9-pin connector for PC, contrast adjustment volume 17, JE
IDA (Japan Electronics Industry Promotion Association) standard PC card 10
A variety of electrical components such as a PC card drive 18 to which is mounted and a printer connection connector 19 (FIG. 6) are stored. The connector 16, the contrast adjustment volume 17, the PC card drive 18, and the printer connection connector 19 all constitute electrical components that are accessed only during maintenance (hereinafter referred to as access electrical components). For this reason, these access electric components are provided on both side plates 8a, 8a of the frame 8 so that the frame 8 can be easily accessed when the frame 8 is pulled out from the case body 5.
8b and the inner surface of the bottom plate 8c or in close proximity to these inner surfaces. Also, both side plates 8a, 8 of the frame 8
In b, a connector insertion hole 20, a volume adjustment hole 21, a PC card slot 22, and a printer connector connection hole 23 are formed corresponding to each access electric component. When the frame 8 is pulled out of the case body 5 by a predetermined amount together with the front cover 6 as shown in FIGS.
To allow connection of external devices, adjustment of the contrast adjustment volume 17, mounting of the PC card 10, and connection of a printer. The contrast adjustment volume 17 is adjusted by inserting a screwdriver or the like into the volume adjustment hole 21, whereby the display device 24 is adjusted.
The contrast of the display screen is adjusted.

The display device 24 is disposed inside the front cover 6 together with the frame 8, and normally displays the set state of the air conditioning control device 1, for example, the operating state, temperature, air volume, and the like. A maintenance screen that displays information required for maintenance from the screen
By switching to the maintenance screen, the type information (component name, type, etc.) 26a to 26d (FIG. 6) of each of the access electric components (16 to 19) is displayed. The display unit 24a of the display device 24 includes:
Display opening 25 formed at the center of the front surface of front cover 6
It is exposed to. As such a display device 24, L
A CD (liquid crystal display device), a CRT (cathode ray tube), or the like can be used. However, in the present embodiment, an example using an LCD is shown, and is hereinafter referred to as an LCD 24.

The type information 26a to 26d are displayed at positions corresponding to the positions of the connector 16, the adjustment volume 17, the PC card drive 18, and the printer connection connector 19. Specifically, the connector 16
Is displayed on the right side of the screen because the connector 16 is mounted inside the right side plate 8a of the frame 8, and the type information 2a of the contrast adjustment volume 17
6b is displayed on the left side of the screen because the volume 17 is mounted inside the left side plate 8b. The type information 26c of the PC card drive 18 is the same as the drive 1
8 is mounted near the left side plate 8a of the frame 8, so that it is displayed on the left side of the screen and the printer connection connector 19
The type information 26d is displayed on the lower side of the screen because the connector 19 is mounted inside the bottom plate 8c of the frame 8.

Switching from the normal screen of the LCD 24 to the maintenance screen is performed when the frame 8 is pulled out of the case body 5 during maintenance, the detecting means 30 detects the pulling out of the frame 8, and the display control is performed based on the detection signal. This is automatically performed by the unit 31 (FIG. 8) sending a signal to the LCD 24.

As the detecting means 30, a non-contact type switch such as a reed switch, or a contact type switch such as a limit switch can be used. In short, as shown in FIG. 5, contacts (or parts corresponding to the contacts) 30a and 30b are attached to the case body 5 and the frame 8 (or the front cover 6), respectively.
(A) Normally OFF as shown in the figure, and (b) when the frame 8 is pulled out from the case body 5 to the maintenance position as shown in the figure, the two contacts 30a and 30b come into contact with or close to each other and become ON, and the detection signal is output. May be sent as long as it sends out.

A touch panel 33 is detachably mounted on the surface of the display 24a of the LCD 24. The touch panel 33 has an LCD as shown in FIG.
24 are provided with detailed information display switches 34a to 34d provided in correspondence with the type information 26a to 26d of each accessible electrical component displayed on the maintenance initial screen 24. These detailed information display switches 34a to 34d It is configured to display, on the maintenance screen, detailed information of the accessible electrical component corresponding to the operation. Here, FIG. 7 shows a state in which the operator presses the detailed information display switch 34a with a finger to turn it on, and the detailed information 35 of the connector 16 is displayed. The detailed information 35 of the connector 36 includes, for example, a baud rate, a data length,
Parity, stop bits, etc. are displayed. In this state, when the switch 34a is pressed again with a finger, the switch 34a is turned off, so that the detailed information 35 disappears and the original maintenance initial screen shown in FIG. 6 is returned.

The connector 16, the adjustment volume 17, the PC card drive 18, the printer connection connector 19, the LCD 24, the detecting means 30, and the touch panel 33 are electrically connected to the printed wiring board 15. Further, the printed wiring board 15 is provided with the display control unit 31 and, as shown in FIG. 8, a CPU 36, a ROM 37, a RAM 38, and an interface 39. The air-conditioning control device 1 is stored in the ROM 37.
And a program for controlling the driving of
The AM 38 stores a normal screen of the LCD 24 and a maintenance screen. The cable of the air conditioning control device 1 is connected to the interface 39 via a connector 40.

FIG. 9 is a flow chart of screen switching. The air conditioner 3 is connected to a power source and set to a use state (start 50). When the setting device 3 for air conditioning is set to the use state, the detecting means 30 detects whether or not the frame 8 is pulled out of the case body 5 (step 51).
When it is not pulled out, the contact 30a of the detecting means 30
Since 30b is kept in the OFF state, the detecting means 30 does not send a signal, and the display device 24 displays a normal screen (step 52).

When the frame 8 is pulled out of the case body 5, the detecting means 30 detects this and transmits a detection signal to the display control section 31. The display control unit 31 switches the display screen to the maintenance screen (initial screen) shown in FIG. 6 based on the detection signal (step 53). On this maintenance initial screen, the frame 8 is
When the display device 24 is stored in the inside, the detection unit 30 is turned off (step 54), and the screen of the display device 24 is switched to a normal screen (step 52).

On the maintenance initial screen, the detailed information display switch 3 of the touch panel 33 is
Press any switch from 4a to 34d with a finger to
If N, detailed information of the access electrical component corresponding to the pressed switch is displayed on the maintenance screen (step 56). Press the same switch again with your finger to turn it off
Then, the displayed detailed information disappears and the screen returns to the original maintenance initial screen (step 57). When the frame 8 is stored in the case main body 5 in the state where the detailed information is displayed, the detection unit 30 is turned off (step 58), and the screen of the display device 24 is switched to a normal screen (step 52). ).

As described above, in the present invention, the frame 8
When the frame is pulled out from the case body 5, the detection means 30 detects that the frame 8 has been pulled out, and the display control unit 31 switches the display screen of the LCD 24 from the normal screen to the maintenance screen based on the detection signal. With this configuration, there is no need for the operator to perform a screen switching operation, and when the frame 8 is pulled out, depending on the installation position of the equipment, the maintenance electric parts cannot be visually recognized, or a plurality of electric parts are arranged close to each other. Even if it is difficult to distinguish the maintenance electric parts, the type and position of the maintenance electric parts are confirmed in advance on the maintenance screen, so that the maintenance work is easy and the workability can be improved.

Further, detailed information 35 of each access electric component is displayed on the touch panel 33, and when the operator refers to the information and performs the operation, the operation manual, etc. It is not necessary to check the adjustment condition and the like, and the workability can be further improved.

In the above embodiment, the air conditioner 3 provided with the touch panel 33 has been described. However, the present invention is not limited to this, and the air conditioner 3 is not provided with the touch panel 33. Is also good.

[0027]

As described above, according to the electric device of the present invention, when the frame is pulled out from the case body, the operator does not need to perform the operation of switching the maintenance screen. Can be improved. In addition, even if the maintenance electric parts cannot be visually recognized due to the installation position of the equipment, or if a plurality of electric parts are arranged close to each other and it is difficult to judge, the type of the maintenance electric parts and its position are displayed on the maintenance screen. Can be confirmed, maintenance work is easy and workability can be further improved. Further, when detailed information of the maintenance electric component is displayed on the touch panel, the workability can be further improved by the worker referring to the detailed information and performing the work.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an example in which the present invention is applied to an air conditioner of an air conditioning control device and is attached to a control panel.

FIG. 2 is a schematic sectional view taken along the line II-II of FIG.

FIG. 3 is a perspective view of the frame pulled out from a case main body, viewed from diagonally left front.

FIG. 4 is a perspective view of the frame pulled out from the case main body as viewed obliquely from the right front side.

FIG. 5 is a schematic view showing a detecting means, wherein (a) is OFF;
FIG. 6B is a diagram showing a state at the time of (b) ON.

FIG. 6 is a diagram showing a maintenance initial screen of the display device.

FIG. 7 is a diagram showing a maintenance detail display screen of the display device.

FIG. 8 is a block diagram of the setting device.

FIG. 9 is a flowchart of screen switching.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Air conditioning control device, 2 ... Control panel, 3 ... Air conditioning setting device, 5
... case body, 6 ... front cover, 8 ... frame, 16 ...
Connector, 17 ... Contrast adjustment volume, 18
... PC card drive, 19 ... Connector for printer connection, 26a-26d ... Type information, 24 ... LCD, 30 ...
Detecting means, 30a, 30b ... contact point, 31 ... display control section,
33 ... Touch panel, 34a-34d ... Detailed information display switch, 35 ... Detailed information.

Claims (3)

[Claims] An electric device installed on a control panel, a wall, or the like, comprising: a case body embedded and installed in the control panel, a wall, etc .; and a display device detachably attached to a front opening of the case body. A front cover, a frame attached to the front cover and retractably housed in the case body, and an electric component attached to the frame and accessible from outside when the frame is pulled out of the case body. Detecting means for detecting that the frame has been pulled out of the case main body, and a display control unit for switching the display device to a maintenance screen based on a detection signal from the detecting means. Electrical equipment. 2. The electric device according to claim 1, wherein the display device displays the type information of each electric component at a position corresponding to an arrangement position of the maintainable electric component on the device on a maintenance screen. Electrical equipment characterized. 3. The electric device according to claim 2, further comprising a touch panel mounted on a display device, wherein each of the accessible electrical components is displayed on a maintenance screen of the display device on the touch panel. A detailed information display switch is provided at a position where the detailed information display switch is operated, and when the detailed information display switch is operated, detailed information of a corresponding accessible electrical component is displayed on the maintenance screen.