JP2011135650A - Distribution panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a user visually recognize a power amount from the outside of a lid. <P>SOLUTION: A distribution panel 1 includes a case 2, the outer lid 4, a measurement instrument 6, and a display 7. In the case 2, an opening 23 is formed at its front face, and an internal instrument for the distribution panel is accommodated therein. The outer lid 4 is attached to the case 2 so as open and close the opening 23 of the case 2. The measurement instrument 6 is accommodated in the case 2, and has a function for measuring the power amount. The measurement instrument 6 has a transmission part 68. The transmission part 68 transmits the information of the power amount to the display 7 by wireless communication. The display 7 is arranged on the external face of the outer lid 4, and has a display function. The display 7 has a receiving part 71 and a display unit 72. The receiving part 71 receives the information of the power amount from the transmission part 68 of the measurement instrument 6 by wireless communication. The display unit 72 displays the information of the power amount received by the receiving part 71. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a distribution board.

  Conventionally, a distribution board that displays an energization state of each branch breaker is known (see, for example, Patent Document 1). According to the distribution board, the user can confirm the energization state of each branch breaker by visually recognizing display contents from the outside of the distribution board.

  However, the distribution board has a problem that the amount of power supplied to the load cannot be displayed only by displaying the energization state of each branch breaker.

  In order to solve the above problem, a distribution board that displays a current value on a display unit is provided (see, for example, Patent Document 2). Since the voltage value is generally a constant value, the distribution board can inform the user of the amount of power by displaying the current value.

JP 2009-131008 A JP 2009-207237 A

  However, in the distribution board described in Patent Document 2 and the like, since the display unit is housed inside the housing, the current value cannot be visually recognized by the user unless the lid is opened. There was a problem. Since it is not preferable from the viewpoint of safety to always open the cover of the distribution board, the user must open the cover of the distribution board every time the current power supply status is checked. I had to.

  This invention is made in view of said point, and the objective of this invention is providing the distribution board which can make a user visually recognize the electric energy from the outer side of a cover part.

  The invention according to claim 1 is a case in which an opening is formed on the front surface and a distribution board internal unit is accommodated, a lid part attached to the case so as to open and close the opening, and a function of measuring electric energy And a display device having a display function. The measuring instrument is housed in the casing, and has a transmission means for transmitting the information on the amount of power to the display unit by wireless communication. The indicator is provided on the outer surface of the lid, and receives information on the amount of power from the transmitter of the measuring device by wireless communication; information on the amount of power received by the receiver Display means for displaying.

  According to a second aspect of the present invention, in the first aspect of the present invention, the display device includes a socket for detachably storing an external memory, and a memory for storing the power consumption information in the external memory attached to the socket. Control means.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a through-hole is formed in the lid portion so that the transmitting means and the receiving means face each other.

  According to the first aspect of the present invention, the display is provided on the outer surface of the lid, and the amount of power is displayed even if the user does not open the lid by displaying the amount of power (the amount of power used) on the display. Therefore, it is possible to improve user convenience. According to the first aspect of the present invention, since the measuring instrument and the display unit perform wireless communication, wiring between the measuring instrument and the display unit is unnecessary.

  According to the invention of claim 2, since the display device has a socket for detachably storing the external memory, the user can easily store the information on the amount of power in the external memory without opening the lid. It can be taken out. Thereby, the user can easily perform, for example, statistical processing using the information on the power amount at another place.

  According to the invention of claim 3, since the through hole is formed in the lid, the wireless signal from the transmitter of the measuring instrument can reach the receiving means of the display without being blocked by the lid. Therefore, transmission / reception of information between the measuring instrument and the display can be performed with high accuracy.

BRIEF DESCRIPTION OF THE DRAWINGS It is a distribution board which concerns on embodiment of this invention, Comprising: (a) is a front view, (b) is AA sectional drawing of (a), (c) is a principal part enlarged view. It is a figure which shows the inside of the housing | casing of the electricity distribution panel which concerns on the same as the above. It is a block diagram which shows each structure of the measuring device and display which concern on the same as the above. The display according to the same, wherein (a) is a front view, (b) is a top view, (c) is a side view, (d) is a bottom view, (e) is a rear view, and (f) is a perspective view. It is.

  As shown in FIGS. 1 and 2, the distribution board 1 according to the embodiment of the present invention includes a housing 2, an inner lid 3, an outer lid 4, and an internal device for a distribution board (main breaker 51, a plurality of Branch breakers 52, 52..., A measuring instrument 6, and a display 7. The distribution board 1 according to this embodiment is attached to a construction material (for example, a wall surface), and the main breaker 51 or each branch breaker 52 housed in the housing 2 is turned on / off as necessary. The

  As shown in FIG. 2, the housing 2 is made of resin or metal, and includes a back plate 21 and a frame body 22. The back plate 21 is a plate formed in a vertically long substantially rectangular plate shape. The frame 22 is a member that is vertically long and is attached to the back plate 21 along the outer edge of the back plate 21. The housing 2 has an opening 23 (see FIG. 1) formed on the front surface. A main breaker 51 and branch breakers 52 are housed inside the housing 2.

  The inner lid 3 shown in FIG. 1 is made of resin or metal, and is attached to the housing 2 so as to cover the front side of the main breaker 51 and each branch breaker 52. An exposure window 31 is formed in the inner lid 3.

  The outer lid 4 is made of resin or metal, and is pivotally supported on one end side of the housing 2 so as to be freely opened and closed, and covers the front side of the inner lid 3. That is, the outer lid 4 is attached to the housing 2 so as to open and close the opening 23 of the housing 2. A through hole 41 is formed in the outer lid 4. The outer lid 4 corresponds to the lid portion of the present invention. The outer lid 4 may be attached to the inner lid 3. Even in this case, the outer lid 4 is attached to the housing 2 together with the inner lid 3.

  The measuring instrument 6 is electrically connected to each of the two voltage lines L1 and L2 and the neutral line N as shown in FIG. The two voltage lines L1 and L2 and the neutral line N are power lines used to supply power to a load (not shown) from a single-phase three-wire power source (not shown). Between the limiter (not shown) and the main breaker 51, two current transformers CT1 and CT2 are provided as measuring means. Two current transformers CT1 and CT2 detect currents flowing through the voltage lines L1 and L2 between the limiter and the main breaker 51, respectively. That is, the two current transformers CT1 and CT2 measure the current flowing from the power source to the load via the two voltage lines L1 and L2.

  The measuring device 6 is a device having a function of measuring electric energy. As shown in FIG. 3, the measuring instrument 6 includes a measurement microcomputer (hereinafter referred to as “measurement microcomputer”) 61, a current processing circuit 62, a voltage processing circuit 63, a power supply circuit 64, and a zero-cross detection unit 65. , An arithmetic processing unit 66, an operation unit 67, and a transmission unit 68. The measuring instrument 6 further includes an S-RAM 81, an EEPROM 82, a clock unit (RTC) 83, and a battery 84. The measuring instrument 6 is accommodated in the housing 2 (see FIG. 1).

  The measurement microcomputer 61 obtains a product of each current value (instantaneous current value) detected by each current transformer CT1, CT2 and each line voltage (instantaneous voltage value) at each preset timing, and both products Is output as the power consumption (instantaneous power). When the measurement microcomputer 61 calculates power consumption, the currents detected by the two current transformers CT1 and CT2 pass through the current processing circuit 62 and are input to the measurement microcomputer 61 as current signals. The current processing circuit 62 performs gain switching and bias application. The line voltage between the voltage line L1 and the neutral line N and the line voltage between the voltage line L2 and the neutral line N are respectively measured by the voltage processing circuit 63, and are sent to the measurement microcomputer 61 as voltage signals. Entered. The voltage processing circuit 63 is connected to the two voltage lines L1 and L2 and the neutral line N, and performs differential amplification, phase shift adjustment, and bias application. That is, the voltage processing circuit 63 is a measuring unit that measures the voltage applied to the load via the two voltage lines L1 and L2 and the neutral line N.

  The power supply circuit 64 obtains a DC voltage for the measuring microcomputer 61 from the line voltage between the voltage line L1 and the neutral line N and the line voltage between the voltage line L2 and the neutral line N. The zero cross detection unit 65 detects a zero cross point from the line voltage. The detection result of the zero cross detector 65 is transmitted to the measurement microcomputer 61 and the arithmetic processor 66.

  The arithmetic processing unit 66 includes a microcomputer as a main component, and includes an electric energy calculation unit 661 and a setting unit 662.

  Based on the output of the measurement microcomputer 61 and the output of the clock unit 83, the electric energy calculation means 661 integrates the power consumption at each timing output from the measurement microcomputer 61 for each predetermined period, and loads the entire facility. Find the power consumption of. The predetermined period is, for example, month / week / day / time.

  The setting unit 662 sets a predetermined period based on the operation of the operation unit 67 by the user before the power consumption calculating unit 661 obtains the power consumption. The predetermined period set by the setting means 662 is stored in the EEPROM 82.

  The operation unit 67 is provided for selecting and setting each item of the measuring instrument 6. The S-RAM 81 and the EEPROM 82 store various data. The EEPROM 82 stores the power consumption so far. The clock unit 83 manages the current date and time. The battery 84 is a backup battery that supplies power to the load in the event of an abnormality or a power failure.

  The transmission unit 68 transmits information on the amount of power to the display unit 7 by wireless communication. As the wireless communication of this embodiment, for example, inductive radio is used. The induction radio is a transmission method using electromagnetic induction of a high-frequency magnetic field generated around the induction wire by a high-frequency current flowing through the induction wire (electric wire). The transmission unit 68 corresponds to the transmission unit of the present invention. As shown in FIG. 1, the transmitter 68 is provided on the front side of the measuring instrument 6 (the right side of FIG. 1C). Therefore, even when the inner lid 3 is closed in a state where the measuring instrument 6 is housed in the housing 2, the transmission unit 68 is exposed from the exposure window 31.

  The display device 7 is a device having a display function. As shown in FIG. 3, the display 7 includes a receiving unit 71, a display unit 72, a display control unit 73, a driver 74, an operation unit 75, a socket 76, an interface 77, and a storage control unit 78. The battery 79 is provided. The indicator 7 is provided on the outer surface of the outer lid 4 (see FIG. 1).

  The reception unit 71 receives information on the amount of power from the transmission unit 68 of the measuring instrument 6 by wireless communication. The receiving unit 71 corresponds to the receiving unit of the present invention. When the wireless communication of the present embodiment is induction radio, the receiving unit 71 is provided with a loop antenna. In the present embodiment, since the through hole 41 is formed in the outer lid 4 so that the transmission unit 68 and the reception unit 71 face each other, the wireless signal from the transmission unit 68 is not blocked by the outer lid 4. .

  The display unit 72 is formed by integrating a liquid crystal display 721 and a backlight 722. The display unit 72 is a device that can display the power consumption obtained by the arithmetic processing unit 66. That is, the display unit 72 displays information on the amount of power received by the receiving unit 71. The display unit 72 corresponds to display means of the present invention. The display control unit 73 is provided to drive and control the liquid crystal display 721. The driver 74 is provided for driving the backlight 722.

  The operation unit 75 is provided for selecting display contents on the liquid crystal display 721 and various settings.

  The socket 76 is provided for mounting an external memory (memory card). That is, the socket 76 detachably stores an external memory. The external memory is, for example, an SD memory card (registered trademark), and is used when taking out past measurement data. The interface 77 is interposed between the socket 76 and the storage control unit 78. The storage control unit 78 stores information on the power consumption in an external memory attached to the socket 76. The storage control unit 78 corresponds to the storage control means of the present invention. The measurement data retrieved by the external memory includes, for example, a current value, a voltage value, and a power consumption amount managed for each time zone. The user can check the measurement data taken out to the external memory with an external device (for example, a personal computer).

  As shown in FIG. 4, the display device 7 includes a thin box-shaped container body 91. The container 91 is formed to be attachable to the outer surface of the outer lid 4. A display screen 723 of the liquid crystal display 721 and an operation unit 75 are provided on the front surface of the container 91. A card slot 92 into which an external memory is inserted is formed on the upper surface of the container 91.

  The operation unit 75 includes an execution switch SW1, an up switch SW2, a down switch SW3, a menu switch SW4, and an item switch SW5. The execution switch SW1 is operated by the user when setting / selecting each setting item. The up switch SW2 is operated by the user when increasing the value of each setting item. The down switch SW3 is operated by the user when the numerical value of each setting item is decreased. The menu switch SW4 is operated by the user when switching the display of the liquid crystal display 721. The item switch SW5 is operated by the user when switching items.

  Next, the housing 2 will be described with reference to FIG. The frame 22 is formed in a vertically long substantially rectangular tube shape. On the inner side surface of the frame 22, an inner collar 24 that protrudes inward is provided over the entire circumference. A vertically long, substantially rectangular plate-shaped inner lid 3 is attached to an inner collar 24 on one end side in the width direction of the frame body 22. The inner lid 3 is fixed using a screw (not shown) at the other end in the width direction.

  The back plate 21 is formed in a vertically long substantially rectangular plate shape. Two vertically long plate-like attachment members 25, 25 are attached to both end sides in the width direction of the back plate 21 using a plurality of (two in the illustrated example) screws 251, 251, respectively. Each attachment member 25 is formed with a plurality of attachment holes 252 and 252 at regular intervals along the longitudinal direction. A substantially rectangular plate-shaped mounting base 26 is mounted on the upper positions of the mounting members 25, 25 using a plurality of screws (four in the illustrated example) 261, 261,. A substantially rectangular plate-shaped mounting base 27 for mounting each branch breaker 52 is mounted at a lower position of both mounting members 25, 25 by using a plurality of (four in the illustrated example) screws 271, 271. ing. The main breaker 51 and the measuring instrument 6 are attached to the attachment base 26. Each branch breaker 52 is attached to the attachment base 27.

  Next, the main breaker 51 will be described. The main breaker 51 is formed in a vertically long, substantially rectangular parallelepiped shape. A plurality (three in the illustrated example) of input terminals 511, 511, 511 and output terminals 512, 512, 512 are provided on both ends in the longitudinal direction on the front side of the main breaker 51. An operation knob 513 is provided at a substantially central position on the front side of the main breaker 51. The operation knob 513 is used to turn on or off an internal contact (not shown) to conduct or open between each input terminal 511 and the corresponding output terminal 512. A primary power source (not shown) is connected to each input terminal 511. One end side of substantially L-shaped conductive members 514 to 516 formed in different lengths is connected to each output terminal 512 using a screw 517. The other end side of each conductive member 514 to 516 uses screws 518 to three conductive bars (not shown) arranged at the same position in the width direction of the housing 2 and at different heights in the depth direction. Each is connected. The main breaker 51 is fixed to the mounting base 26 using, for example, screws.

  Next, the branch breaker 52 will be described. The branch breaker 52 has a substantially rectangular parallelepiped shape, and is formed to have one distribution board agreement dimension. An operation knob 521 is provided on the front side of the branch breaker 52. The operation knob 521 is used to turn on or off an internal contact (not shown) to conduct or open between each input unit (not shown) and a corresponding output terminal (not shown). On the front side of the branch breaker 52, a plate holding portion 53 is pivotally supported in the vicinity of the edge on the input portion side. The branch breakers 52 are arranged in two rows on the left and right sides of the conductive bar in the width direction of the housing 2, and a plurality (eight in FIG. 2) are arranged in parallel along the conductive bar in the longitudinal direction.

  Next, the inner lid 3 will be described with reference to FIG. The inner lid 3 has a substantially rectangular plate shape, and an operation window (not shown) for exposing the operation knob 513 to the front side is formed at a portion facing the main breaker 51. An operation window (not shown) for exposing operation knobs 521 of a plurality of branch breakers 52 arranged in parallel along the longitudinal direction of the housing 2 is provided at a portion of the inner lid 3 facing the branch breakers 52. Two pieces are formed along the width direction of the body 2.

  Next, the operation of the distribution board 1 according to the present embodiment will be described with reference to FIG. First, the measuring instrument 6 is connected to two current transformers CT1 and CT2. Thereafter, the measurement microcomputer 61 obtains the power consumption value of the load by using the instantaneous voltage value measured by the voltage processing circuit 63 and the instantaneous current value measured by the two current transformers CT1 and CT2. Thereafter, the power amount calculation means 661 of the arithmetic processing unit 66 integrates the power consumption values obtained by the measurement microcomputer 61 to obtain the power consumption amount. Thereafter, the transmission unit 68 transmits information on the power consumption amount to the display unit 7 by wireless communication. In the display unit 7, the reception unit 71 receives information on the power consumption amount. Thereafter, the display 7 displays the power consumption.

  As described above, according to the present embodiment, the display device 7 is provided on the outer surface of the outer lid 4, and the user does not open the outer lid 4 by displaying the power consumption amount (power consumption amount) on the display device 7. In addition, since the power consumption can be known, user convenience can be improved.

  Moreover, according to this embodiment, since the measuring device 6 and the display device 7 perform wireless communication, the wiring between the measuring device 6 and the display device 7 is unnecessary.

  Furthermore, according to the present embodiment, the display 7 has the socket 76 for detachably storing the external memory, so that the user can store the power consumption information in the external memory without opening the outer lid 4. Can be easily removed. Thereby, the user can easily perform statistical processing using the information on the power consumption, for example, in another place.

  Further, according to the present embodiment, since the through-hole 41 is formed in the outer lid 4, the wireless signal from the transmission unit 68 of the measuring instrument 6 is received by the display unit 7 without being blocked by the outer lid 4. Since it can be made to arrive at part 71, transmission and reception of information between measuring instrument 6 and indicator 7 can be performed accurately. In particular, when the outer lid 4 is made of metal, the above effect is remarkable.

1 Distribution board 2 Housing 23 Opening 4 Outer lid (lid)
41 Through hole 51 Main breaker (Internal device for distribution board)
52 Branch breaker (Internal device for distribution board)
6 Measuring instrument 68 Transmitter (transmitting means)
7 Display 71 Receiver (Receiving means)
72 Display unit (display means)
76 socket 78 storage controller

Claims (3)

A housing in which an opening is formed on the front surface and an internal device for a distribution board is stored;
A lid attached to the housing to open and close the opening;
A measuring instrument having a function of measuring electric energy;
A display device having a display function,
The measuring instrument is
Stored in the housing,
Transmission means for transmitting the information on the amount of power to the display by wireless communication;
The indicator is
Provided on the outer surface of the lid,
Receiving means for receiving information on the amount of power from the transmitting means of the measuring instrument by wireless communication;
A distribution board comprising: display means for displaying information on the electric energy received by the receiving means. The indicator is
A socket for detachably storing an external memory;
The distribution board according to claim 1, further comprising storage control means for storing information on the power consumption amount in the external memory mounted in the socket.   The distribution board according to claim 1 or 2, wherein a through-hole is formed in the lid portion so that the transmitting means and the receiving means are opposed to each other.

Images