JP2011009844A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of displaying information without malfunction due to noise generated at a power supply circuit.SOLUTION: The display device 1 includes a body 2 and a power supply 3. The body 2 is connected to the power supply 3 through a circuit power source line 10. The body 2 includes a radio reception circuit 4 with a built-in antenna, a data processing circuit 5, and a display circuit 6. The power supply 3 includes a power supply circuit 7, an AC (Alternating Current) 100 V input 8, and a metal shield 9. At the power supply 3, a pair of claws for connection are prepared on the end of right and left side faces. At the body 2, a pair of first claw receptacles and another pair of second claw receptacles are prepared on right and left side faces to correspond to the pair of claws for connection. In addition, a hook hole is prepared at the upper rear part of the body 2 for hooking on a hook fixed to a wall for wall installation.

Description

  The present invention relates to a display device that displays an operation state of a photovoltaic power generation system.

  Conventionally, a display that displays the operating condition of a power conditioner that converts DC power generated by solar cells in a solar power generation system into AC power and supplies it to the power system or supplies power to a self-supporting load There is a device. For example, the display device displays information such as the amount of power generation as the operating state of the inverter. Among such display devices, there is also a display device having a function of receiving a data signal using wireless communication. Such a display device is often installed in a living room or the like. On the other hand, the power conditioner itself is often installed near the distribution board. Therefore, the display device is separated from the main body of the power conditioner, and has a configuration in which a data signal indicating the operation state of the power conditioner is received by wire or wirelessly and displayed using the data signal. At that time, as a structure for installing the display device in the living room, for example, a structure that allows the user to select either wall hanging or self-standing installation on a desktop, such as a desktop wall hanging type communication device disclosed in Patent Document 1 It has been known. This desktop wall hanging type communication device performs communication by wire, and a power source is a dry battery.

JP 2001-68868 A

  In recent years, a wireless communication system that performs wireless communication for ease of installation work and a system that obtains power from commercial 100V instead of a dry battery have been commercialized for maintenance. In the wireless communication system, a wireless module in which an antenna and a receiving circuit are incorporated in a display device is often used. In addition, it is necessary to create a low-voltage power supply such as DC5V necessary for display devices from commercial 100V. However, there is a possibility that noise is generated from the power supply circuit that creates such a low-voltage power supply, causing the wireless module to malfunction.

  The present invention has been made in view of the above, and an object of the present invention is to provide a display device capable of displaying information without malfunctioning due to noise generated in a power supply circuit.

  In order to solve the above-described problems and achieve the object, the present invention provides a display device, a wireless reception circuit that receives a wireless signal indicating an operation state of a photovoltaic power generation system, and a process for processing the wireless signal. A data processing circuit for converting display data for displaying information on the display circuit; a main body having a display circuit for displaying the information using the display data; and a wireless receiving circuit for generating a driving power source, A power supply unit having a power supply circuit for supplying the data processing circuit and the display circuit, the main body unit and the power supply unit are built in separate housings, the power supply circuit is metal-shielded, and the power supply unit is It is connectable to the side surface or the back surface of the main body.

  According to the present invention, information can be displayed without malfunction due to noise generated in the power supply circuit.

FIG. 1 is an external view showing an installation state of the display device 1 according to the first embodiment. FIG. 2 is a diagram illustrating an internal configuration of the display device 1 according to the embodiment. FIG. 3 is a structural diagram showing the connection between the main body 2 and the power supply unit 3 of the display device 1 according to the embodiment. FIG. 4 is a diagram illustrating an appearance of the display device 1 according to the second embodiment. FIG. 5 is a diagram illustrating an appearance of the display device 1 according to the third embodiment. FIG. 6 is a diagram illustrating an example of the appearance of the display device 1 when the power supply unit 3 is connected to the back surface of the main body unit 2. FIG. 7 is a diagram illustrating an appearance of the display device 1 according to the fourth embodiment. FIG. 8 is an external view showing an installation state of the display device 1 according to the fifth embodiment. FIG. 9 is an external view showing an installation state of the display device 1 according to the embodiment. FIG. 10 is a diagram illustrating an appearance of the display device 1 according to the sixth embodiment.

  Exemplary embodiments of a display device according to the present invention will be explained below in detail with reference to the accompanying drawings.

Embodiment 1 FIG.
FIG. 1 is an external view showing an installation state of the display device 1 according to the present embodiment. The left side of the drawing shows a state in which the display device 1 is installed on a wall, and the right side of the drawing shows a state in which the display device 1 is installed independently on a table. FIG. 2 is a diagram illustrating the internal configuration of the display device 1 according to this embodiment. The display device 1 includes a main body unit 2 and a power supply unit 3. The main body 2 and the power supply 3 are connected by a circuit power supply line 10. The main body 2 includes a radio reception circuit 4 with a built-in antenna, a data processing circuit 5, and a display circuit 6. The power supply unit 3 includes a power supply circuit 7, an AC (Alternating Current) 100 V input 8, and a metal shield 9.

  The operation state of the photovoltaic power generation system is wirelessly transmitted as a data signal (referred to as a radio signal) from a transmitter connected to a power conditioner (not shown). The wireless reception circuit 4 receives a wireless signal indicating the operating state of the photovoltaic power generation system. The data processing circuit 5 processes the radio signal received by the radio reception circuit 4 and converts it into display data for displaying information on the display circuit 6. The display circuit 6 is an LCD (Liquid Crystal Display), for example, and displays information using the display data converted by the data processing circuit 5. The information is, for example, the amount of power generation. The AC100V input 8 is supplied with AC100V, which is an AC power supply, and the power supply circuit 7 generates a drive power by converting the AC100V into direct current (DC) and low voltage (for example, DC5V) for circuit control, Driving power is supplied to the wireless reception circuit 4, the data processing circuit 5, and the display circuit 6 via the circuit power supply line 10 to drive each circuit. Here, the power supply circuit 7 is shielded (enclosed) by the metal shield 9. This prevents noise generated in the power supply circuit 7 from going out of the metal shield 9. Therefore, noise generated in the power supply circuit 7 can be prevented from affecting the wireless reception circuit 4, the data processing circuit 5, and the display circuit 6. In particular, since the reception of the radio signal by the radio reception circuit 4 is reception of weak radio waves, the radio reception circuit 4 is easily affected by being unable to receive the radio signal, but this can be avoided. Further, even if an abnormal overheating occurs due to a component failure or a circuit short-circuit accident in the power supply circuit 7, even if ignition or the like occurs in some cases, the metal shield 9 is closed. For this reason, it is possible to prevent the flame from burning out to the outside, and the safety becomes extremely high.

  FIG. 3 is a structural diagram illustrating the connection between the main body 2 and the power supply unit 3 included in the display device 1 according to the present embodiment. As shown in the figure, the power supply unit 3 is provided with a pair of connection claws 11 at the left and right side edges, and the main body unit 2 has a pair of claw receptacles 12a corresponding to the pair of connection claws 11 on the left and right sides. And another pair of claw receptacles 12b is provided. In addition, a hook hole 13 for hooking on a hook or the like fixed to the wall when the wall is installed is provided on the upper back of the main body 2.

  First, connection for wall mounting will be described. The connection claw 11 of the power supply unit 3 is connected to the claw receptacle 12 a from the lower surface side of the main body unit 2. As shown on the left side of FIG. 1, the display device 1 has a flat shape as a whole, and is attached to a wall hook by a hook hole 13.

  Next, connection for desktop freestanding installation will be described. The connection claw 11 of the power supply unit 3 is connected to the claw receptacle 12b from the back side of the main body unit 2. As shown on the right side of FIG. 1, the display device 1 can be installed on a table with the power supply unit 3 as a support.

  The circuit power supply line 10 is wired through a hole provided in the main body 2 and the power supply unit 3 so that the power supply unit 3 does not get out of the way even if the power supply unit 3 is connected to either the lower surface or the rear surface. Yes.

  As described above, in the present embodiment, the power supply circuit 7 is covered with the metal shield 9 so that the power supply unit 3 can be connected to the lower surface and back surface of the main body unit 2. Thereby, it is possible to prevent the noise generated in the power supply circuit 7 from leaking to the outside, and to realize a good reception operation by the wireless reception circuit 4 of the main body 2.

  In addition, even if it ignites in the power supply circuit 7, flames do not come out to the outside, so that burning can be prevented and high safety can be ensured.

  Furthermore, the power supply unit 3 can be attached to either the lower surface or the back surface of the main body unit 2 by a simple connection method in which the connection claw 11 is fitted into the claw receptacle 12a or 12b. For this reason, it is possible to realize a structure that can be used both on a wall or on a table and can be installed at low cost while maintaining good reception sensitivity of the antenna, and the degree of freedom of installation can be improved.

Embodiment 2. FIG.
Next, a second embodiment of the display device will be described. In addition, about the part which is common in the above-mentioned Embodiment 1, it demonstrates using the same code | symbol or abbreviate | omits description. FIG. 4 is a diagram illustrating the appearance of the display device 1 according to this embodiment. As shown in the figure, the output terminal 14 of the control power generated by the power circuit 7 is provided on the upper surface of the power supply unit 3. Further, an input terminal 15a for driving power source for driving each circuit in the main body unit 2 is provided on the lower surface of the main body unit 2, and an input terminal 15b for driving power source is provided on the back surface of the main body unit 2. Yes. In this embodiment, the output terminal 14 and the input terminal 15a or 15b are interposed in the middle of the circuit power supply line 10 shown in the first embodiment. That is, the main body 2 and the power source 3 are structurally connected by the connection claw 11 and claw receiver 12a or claw receiver 12b, and electrically connected by the output terminal 14 and input terminal 15a or input terminal 15b. The

  In the first embodiment, the circuit power line 10 may sag and the extra length may protrude to the outside, and dust may enter the inside through a hole through which the circuit power line 10 passes. However, in the present embodiment, the circuit power supply line 10 is completely accommodated in the main body 2 and the power supply 3. Therefore, the above-described fear can be avoided, and a display device with high reliability and excellent design can be realized.

Embodiment 3 FIG.
Next, a third embodiment of the display device will be described. Note that portions that are the same as those in Embodiment 1 or Embodiment 2 described above are described using the same reference numerals, and descriptions thereof are omitted. FIG. 5 is a diagram illustrating an appearance of the display device 1 according to the present embodiment. As shown in the figure, the main body 2 is provided with a pair of claw receivers 12a, claw receivers 12b, claw receivers 12c and claw receivers 12d corresponding to the pair of connection claws 11 on the left and right side surfaces. Further, a control power input terminal 15a for driving each circuit in the main body 2 is provided on the lower surface of the main body 2. Further, a control power input terminal 15b and an input terminal 15c are provided on the back of the main body 2. And an input terminal 15d. A plurality of claw receptacles for connection with the power supply unit 3 are prepared on the side surface of the main body unit 2. A plurality of control power input terminals are provided on the lower surface and the rear surface of the main body 2. Therefore, the connection between the power supply unit 3 and the main body unit 2 is to select one of (12a, 15a), (12b, 15b), (12c, 15c), (12d, 15d) as a combination of input terminals. Is possible.

  FIG. 6 is a diagram illustrating an example of the appearance of the display device 1 when the power supply unit 3 is connected to the back surface of the main body unit 2. It is possible to change the angle at which the display device 1 is installed in a plurality of ways by selecting the connection location between the main unit 2 and the power source unit 3 when the table is installed on a stand-alone basis. Can be changed on the street. For this reason, it is possible to select the state in which the reception sensitivity of the antenna is the best and use the display device 1 in that state.

Embodiment 4 FIG.
Next, a fourth embodiment of the display device will be described. Note that portions that are the same as those in Embodiments 1 to 3 described above are described using the same reference numerals, and descriptions thereof are omitted. FIG. 7 is a diagram illustrating an appearance of the display device 1 according to the present embodiment. As shown in the figure, the power supply section 3 is provided with a convex connection section 16 on the connection surface (upper surface) with the main body section 2. Further, the main body 2 is provided with a concave connection portion 17a on the lower surface and a concave connection portion 17b, a concave connection portion 17c and a concave connection portion 17d on the back surface.

  The power supply unit 3 can be connected to the main unit 2 by sliding the convex connection unit 16 on any of the concave connection units 17 a to 17 d of the main unit 2. In addition, the convex connection part 16 becomes wide as the width | variety of the convex part goes outside, and the concave connection parts 17a-17d become wide as the width | variety of the concave part goes to the back side. Therefore, a stable connection is possible without slipping back and forth after being slid and mounted.

  In the present embodiment, it is possible to change the angle at which the display device 1 is installed in a plurality of ways by selecting the connection location between the main body 2 and the power supply 3 at the time of stand-alone installation on the desktop. The angle of the antenna can be changed in multiple ways. For this reason, it is possible to select the state in which the reception sensitivity of the antenna is the best and use the display device 1 in that state.

Embodiment 5 FIG.
Next, a fifth embodiment of the display device will be described. Note that portions that are the same as those in Embodiments 1 to 4 described above are described using the same reference numerals, and descriptions thereof are omitted. FIGS. 8-9 is an external view which shows the installation state of the display apparatus 1 concerning this Embodiment. As shown in these drawings, the main body 2 and the power supply 3 are rotatably connected by a hinge 18. In FIG. 8, the power supply unit 3 is disposed on the lower surface of the main body unit 2, and in FIG. 9, the power supply unit 3 is disposed on the side surface of the main body unit 2. By adjusting the rotational position of the hinge 18 to make the main body 2 and the power supply 3 flat (180 degrees), the display device 1 can be wall-mounted, and the angle between the main body 2 and the power supply 3 is 90 degrees. The display device 1 can be placed on a table on a stand-alone basis if the angle is less than or equal.

  In such a hinge structure, the angle between the main body 2 and the power supply 3 can be continuously selected and adjusted in a table-top stand-alone installation. For this reason, it is possible to finely adjust the receiving sensitivity of the antenna.

Embodiment 6 FIG.
Next, a sixth embodiment of the display device will be described. Note that portions common to the above-described first to fifth embodiments will be described using the same reference numerals, and description thereof will be omitted. FIG. 10 is a diagram illustrating an appearance of the display device 1 according to the present embodiment. As shown in the figure, the power supply unit 3 is provided with a magnet 19 on the connection surface (upper surface) with the main body unit 2. Further, the main body 2 is provided with a metal part 20a on the lower surface and a metal part 20b on the back surface. By attaching the magnet 19 of the power supply unit 3 to an arbitrary place of the metal part 20a or the metal part 20b of the main body part 2, the main body part 2 and the power supply part 3 can be connected. If the power supply unit 3 is connected to the lower surface of the main body unit 2, the display device 1 can be installed on the wall, and if the power supply unit 3 is connected to the rear surface of the main body unit 2, the display device 1 can be installed on the desktop.

  Since the power supply unit 3 can be connected to an arbitrary place on the back surface of the main body unit 2 in the table stand-alone installation, the angle between the main body unit 2 and the power supply unit 3 can be continuously selected and adjusted. For this reason, it is possible to finely adjust the receiving sensitivity of the antenna.

[Modification]
Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Main body part 3 Power supply part 4 Wireless reception circuit 5 Data processing circuit 6 Display circuit 7 Power supply circuit 8 AC100V input 9 Metal shield 10 Circuit power supply line 11 Connection claw 13 Hook hole 14 Output terminals 15a, 15b, 15C, 15d Input terminal 16 Convex connection part 17a, 17b, 17c, 17d Concave connection part 18 Hinge 19 Magnet 20a, 20b Metal part

Claims (3)

A wireless reception circuit that receives a wireless signal indicating an operating state of the photovoltaic power generation system, a data processing circuit that processes the wireless signal and converts the display data into display data for displaying information on a display circuit, and the display data A main body having a display circuit for displaying the information using,
A power supply unit having a power supply circuit that generates a drive power supply and supplies the drive power supply to the wireless reception circuit, the data processing circuit, and the display circuit;
The main body and the power supply are each housed in separate cases,
The power circuit is metal shielded,
The power supply unit can be connected to a side surface or a back surface of the main body unit. The display device according to claim 1, wherein a plurality of connection parts for connecting the power supply part are provided on a back surface of the main body part. A wireless reception circuit that receives a wireless signal indicating an operating state of the photovoltaic power generation system, a data processing circuit that processes the wireless signal and converts the display data into display data for displaying information on a display circuit, and the display data A main body having a display circuit for displaying the information using,
A power supply unit having a power supply circuit that generates a drive power supply and supplies the drive power supply to the wireless reception circuit, the data processing circuit, and the display circuit;
The main body and the power supply are each housed in separate cases,
The power circuit is metal shielded,
The display device, wherein the power supply unit and the main body unit are connected by a hinge.

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