JP4705622B2 - Distribution board - Google Patents

Description

  The present invention relates to a distribution board, and more particularly to a residential distribution board installed in a house.

  Conventionally, as a distribution board, a distribution board for housing (mainly used as an entrance device for a house, etc.) in a single-phase two-wire 100V or single-phase three-wire 100 / 200V circuit of AC 50 Hz or 60 Hz. Is also provided).

  This type of distribution board is used as a main circuit breaker (main switch) or a branch circuit (branch line) that branches from the main circuit (bus) connected to the secondary side of the main circuit breaker and supplies power to the electrical equipment. Each device includes an internal device such as a plurality of branch breakers (branch switches) provided therein and a cabinet in which the internal device is housed (installed).

Incidentally, in recent years, there has been proposed a distribution board including a current sensor that detects a current value flowing through a branch breaker (supplied to an electrical device via the branch breaker) (see, for example, Patent Document 1). The one disclosed in Patent Document 1 is provided with a current sensor including a current transformer for detecting the current of each of a plurality of branch breakers in a cabinet, and each current sensor is energized and displayed using an individual output line. Connected to the block. The energization display block is provided with a light emitting diode (LED) that is turned on by the output current of each current sensor, and thereby the energization state of the branch breaker can be displayed. Patent Document 2 discloses a current sensor that uses a Rogowski coil as a current sensor.
Japanese Patent No. 2991875 JP 2007-228734 A

  In the thing shown in the said patent document 1, since the observation window is provided in the door of the cabinet and it can confirm the lighting state of the light emitting diode of an electricity supply display block through this observation window, even if it does not open a cabinet door The energization state of the branch breaker can be grasped from the lighting state of the light emitting diode of the energization display block.

  However, in the thing shown in the said patent document 1, since the insides of cabinets, such as an electricity supply display block and a branch breaker, would be visible from a peeping window, it looked bad.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a distribution board that can grasp the energization state of the branch breaker without opening the door and has a good appearance. .

In order to solve the above-described problems, the invention according to claim 1 is provided with a main breaker and a branch electric circuit that branches from the main electric circuit connected to the secondary side of the main circuit breaker and supplies electric power to the electric device. A plurality of branch breakers, measuring means for measuring the current value supplied to the electrical equipment via the branch breakers for each of the plurality of branch breakers, a plurality of indicator lamps for displaying the respective energization states of the plurality of branch breakers, A control unit that controls the lighting state of the plurality of indicator lamps based on each current value obtained by the measuring means is housed in a box whose front surface is open, and the box has a door that can open and close the front opening of the box. is attached, in the box, a plurality of branch breakers are housed side by side along a predetermined arrangement direction, it is housed in the vicinity of the branch breakers which each indicator is associated, to the door A window hole for emitting the light emitted from the indicator lamp to the outside and a transparent cover for closing the window hole are provided, and at least a part of the transparent cover transmits the light emitted from the indicator lamp outside the box. It is emitted to, and Ri Do of suppressing member incidence of light from outside the box into the box, window hole is in the array direction for the extractable size light emitted from one indicator to the outside The light shielding wall is provided between the adjacent window holes, and the region where the plurality of window holes are formed along the arrangement direction in the door is a portion of the door that covers the space for arranging the internal device in the box. characterized that you have traversed in the direction along said arrangement direction.

According to the invention of claim 1, since the light emitted from the indicator light is emitted from the inside of the box to the outside of the box through the window hole and the translucent cover, the lighting state of the indicator lamp can be visually recognized even when the door is closed. The energization state of the branch breaker can be ascertained without opening the door, and the translucent cover suppresses light from entering the box from outside the box. Because it becomes difficult to see the inside, you can improve the appearance. Further, since the window hole is formed in a size that can emit the light emitted from one indicator lamp to the outside in a predetermined direction, it is erroneously recognized which indicator lamp is shining. Even if the arrangement of internal devices (main circuit breaker and branch breaker) in the internal device arrangement space of the box is changed and the positions of multiple indicator lights change, multiple The area in which the window holes are formed along the arrangement direction crosses the portion of the door that covers the internal device arrangement space in the box in the direction along the arrangement direction, so that the light emitted from the plurality of indicator lights Is emitted from one of the plurality of window holes, and the same door can be used regardless of the arrangement position of the internal device in the internal device arrangement space.

The invention of claim 2 is characterized in that in the invention of claim 1, there is provided setting means for setting the luminance of the indicator lamp, and the control unit lights the indicator lamp with the luminance set by the setting means. To do.

According to invention of Claim 2 , an indicator lamp can be lighted with the brightness according to the installation place of a box.

According to a third aspect of the invention, in the first or second aspect of the invention, the indicator lamp is arranged on the secondary side to which a power line from an electric device is connected in the corresponding branch breaker. .

According to the invention of claim 3, since the name display part which describes the name of the electric equipment etc. which are generally connected to the branch breaker is often provided on the secondary side of the branch breaker, the secondary side of the branch breaker By disposing the indicator lamp in the position, the name display portion and the indicator lamp are brought close to each other, whereby the correspondence between the electric device and the indicator lamp can be easily known.

In invention of Claim 4 , in invention of any one of Claims 1-3 , the name display part which displays the name of the said electric equipment connected to the said branch breaker is provided in the front side of the said door. The name display unit is provided in the vicinity of the door part where the light emitted from the indicator lamp that displays the energization state of the branch breaker corresponding to the name display part is emitted or at a position overlapping the part. It is characterized by being.

According to the fourth aspect of the present invention, it is possible to easily know the correspondence between the electric device and the indicator lamp even when the door is closed.

  In the present invention, the lighting state of the indicator lamp can be visually recognized even when the door is closed, so that the energization state of the branch breaker can be grasped without opening the door, and the box is used for checking the lighting state of the indicator lamp. Since the inside becomes difficult to see, it has the effect of improving the appearance.

(Embodiment 1)
The distribution board of the present embodiment is a so-called residential distribution board, and branches from a main breaker 1 and a main electric circuit 10 connected to the secondary side of the main breaker 1, as shown in FIGS. A plurality of (34 in the illustrated example) branch breakers 2 and a main breaker 1 are provided in the branch circuit 11 that supplies power to an electric device (not shown) (for example, a household appliance such as a washing machine or a television). A main current sensor (not shown) for measuring a current value supplied to the main electric circuit 10 and a branch for measuring a current value supplied to an electric device via the branch breaker 2 for each of the plurality of branch breakers 2 A cabinet 9 includes a current sensor 3 and an energization display means 4 for displaying energization states of the main breaker 1 and the plurality of branch breakers 2 based on current values obtained by the main current sensor 3 and the branch current sensor 3. It is housed in.

  The main breaker 1 is connected to, for example, the power supply side terminals 1a and 1b and the neutral electrode 103 connected to the voltage electrodes 101 and 102 of the low-voltage distribution line 100 drawn into a dwelling unit from a pole transformer (not shown). Connected to the power supply side terminal 1 c, the power supply side terminals 1 a and 1 b connected to the voltage poles 101 and 102, two load side terminals (not shown) that become voltage poles corresponding to each, and the neutral electrode 103. In correspondence with the power supply side terminal 1c, a load side terminal (not shown) serving as a neutral pole is provided. In addition, the main breaker 1 has an open / close mechanism (not shown) for turning on / off energization between the power supply side terminals (namely, primary side terminals) 1a to 1c and the corresponding load side terminals (namely, secondary side terminals). The operation handle 1d for on / off operation of the opening / closing mechanism is exposed on the front surface. In addition, the main breaker 1 has an overcurrent (overload current or short circuit current) between the power supply side terminals 1a to 1c and the load side terminal, or when a leakage current occurs (that is, when an abnormal current occurs). ) Is provided with a circuit shut-off function that shuts the gap between them and positions the operation handle 1d on the off side.

  Further, the main breaker 1 houses the above-described main current sensor for detecting the current flowing through the load side terminal, and is supplied to the main electric circuit 10 via the main breaker 1 on the front side of the main breaker 1. Output terminal portion (not shown) for taking out the current value (current value of the main breaker 1) from the main current sensor.

  In addition, a state display unit 1e for displaying that an abnormality has occurred is provided on the front side of the main breaker 1. For example, the color of the state display unit 1e is white during normal operation, and the state is displayed when there is an abnormality. The color of the display unit 1e is set to yellow, thereby displaying that an abnormality has occurred. In addition, a test button 1 f for testing whether or not the main breaker 1 operates normally is provided on the front side of the main breaker 1. Since the state display unit 1e and the test button 1f are well known, detailed description thereof is omitted. In FIG. 3, the power supply side terminals 1a to 1c, the state display unit 1e, and the test button 1f are not shown.

  By the way, a branch block 6 to which a plurality of branch breakers 2 can be connected is housed in the cabinet 9.

  As shown in FIGS. 4 to 6, the branch block 6 is a pair in which one end side in the longitudinal direction (the left end side in FIG. 4A) is electrically connected to each load side terminal serving as a voltage electrode of the main breaker 1. Conductive bar 60, a long conductive bar 61 in which one end in the longitudinal direction (the left end in FIG. 4A) is electrically connected to the load side terminal serving as the neutral pole of the main breaker 1, and a sensor The block 62 is provided with a base 63 formed in a rectangular plate shape with an insulating resin material or the like.

  The pair of conductive bars 60 are used as voltage electrodes by electrically connecting one end side in the longitudinal direction to the load side terminals of the pair of voltage electrodes of the main breaker 1. Such a conductive bar 60 is formed, for example, by a metal plate in the shape of a rectangular plate that occupies approximately half of the base 63 in the short direction, and a branch breaker is formed at the edge of one end in the short direction. A plurality of (18 in the present embodiment) branching conductive bars 60a serving as connection portions for connecting the two are projected. Here, the branching conductive bars 60a are arranged along the longitudinal direction of the conductive bar 60, whereby the plurality of branch breakers 2 are arranged in the branch block 6 in a predetermined arrangement direction (longitudinal direction of the conductive bar 60). Thus, the connection can be made in the form of being arranged along the horizontal direction in FIG. In the present embodiment, since the branch breakers 2 can be arranged on both sides in the width direction of the conductive bars 60 and 61, as shown in FIG. 4A, the branch block 6 includes a plurality of branch breakers 2 arranged as described above. Two rows can be attached along the direction.

  The conductive bar 61 is used as a neutral pole by electrically connecting one end side in the longitudinal direction (left end side in FIG. 4A) to the load side terminal of the neutral pole of the main breaker 2, For example, it is formed in a long plate shape by a metal plate, and both edges in the short direction are used as connection portions for connecting the branch breaker 2. Such a conductive bar 61 is constructed between prismatic support posts 63 a that project forward from the central portions of both ends in the longitudinal direction of the base 63.

  The conductive bars 60 and 61 are individually electrically connected to the load side terminals of the main breaker 1. Therefore, in the distribution board of this embodiment, the main bars (buses) 10 and a plurality of branch lines (branch lines) 11 branching from the main electric paths 10 are configured by the conductive bars 60 and 61. The conductive bars 60 and 61 constituting the main electric circuit 10 and the branch electric circuit 11 are each set such that the width, thickness, etc. have a maximum current capacity that matches the maximum rated current of the main circuit breaker 1.

  As shown in FIG. 6B, the branch block 6 is provided with a locking member 64 for preventing the branch breaker 2 from being unexpectedly detached from the conductive bars 60 and 61. The locking member 64 is formed in a flat plate shape with a soft resin material having insulating properties, and the both ends in the short direction (width direction, vertical direction in FIG. 6B) on the rear surface side are shown in FIG. As shown to b), the latching hole part 64a in which the latching protrusion 2d of the branch breaker 2 mentioned later is engage | inserted is formed.

  As shown in FIGS. 7 and 8, the sensor block 62 is formed using a long plate-like printed circuit board 62a, and a plurality of (one of the conductive bars 60a for branching one of the conductive bars 60 is inserted through each ( A plurality of (18 in the illustrated example) square hole-like second holes through which the first through holes 62b having a round hole shape and the branching conductive bars 60a of the other conductive bar 60 are inserted respectively. It is provided in a shape corresponding to each of the insertion hole 62c and the plurality of first insertion holes 62b.

  The sensor block 62 branches based on the branching current sensor 3 (see FIG. 6) for detecting the current flowing through the branching conductive bar 60a inserted through the first insertion hole 62b and the detection output of the branching current sensor 3. A sensor unit 62d for calculating a current value of the breaker 2 (a current value supplied to an electric device via the branch breaker 2) and an output terminal portion (not shown) are provided.

  The branching current sensor 3 is a current sensor having a Rogowski coil made of a coil line (not shown) formed so as to surround the first insertion hole 62b around the first insertion hole 62b in the printed circuit board 62a. Yes, the differential form of the current is output as the detection output. This coil line electrically connects conductive patterns (not shown) formed on the front and back sides of the printed board 62a through through holes (not shown) provided in the periphery of the first insertion hole 62b in the printed board 62a. Is connected to. Since the Rogowski coil made of such a coil line is conventionally known, detailed description thereof is omitted in this embodiment.

  The sensor unit 62d is supplied to an electric device via the branch breaker 2 based on the detection output of the branch current sensor 3 connected to the branch breaker 2 to be measured by the branch current sensor 3. (Current value) and a function of outputting the current value of the branch breaker 2 when a trigger signal described later is received. In the present embodiment, since the plurality of sensor units 62d are connected in a chain shape, the sensor unit 62d outputs a current value of the branch breaker 2 and then transmits a trigger signal to the subsequent sensor unit 62d. ing. Therefore, after the trigger signal is given to the first sensor unit 62d, the trigger signal is sent from the preceding sensor unit 62d to the succeeding sensor unit 62d, and the current value of the branch breaker 2 is output in order from each sensor unit 62d. The

  Such a sensor unit 62d is configured by integrating (integrating) electronic components including a CPU, for example, and is mounted on a printed circuit board 62a. Further, the sensor block 62 includes an insulating cover 62f that covers the surface of the sensor block 62, whereby the branching current sensor 3 mounted on the printed circuit board 62a, the conductive portion such as the sensor unit 62d, and the conductive bars 60 and 61. To ensure insulation.

  The branch breaker 2 includes a plurality of (three) power supply side connection portions 2a (see FIG. 4B) connected to the branching conductive bar 60a provided in the conductive bar 60 or the widthwise edge of the conductive bar 61. And a load side connection portion 2b (see FIG. 6B) to which a power supply line (not shown) of an electric device (load) is connected. Of the three power supply side connection portions 2a, only two are actually used.

  The branch breaker 2 contains an opening / closing mechanism (not shown) for turning on / off the power supply between the power supply side connecting portion 2a and the load side connecting portion 2b, and an operating handle for turning on / off the opening / closing mechanism. 2 c is exposed in the center of the front surface of the branch breaker 2. Further, the branch breaker 2 interrupts the operation when an overcurrent flows between the power supply side connection part 2a and the load side connection part 2b or when a leakage occurs (that is, when an abnormality occurs) A circuit cutoff function is provided for positioning the handle 2c on the off side. Further, the above-described locking projection 2d is provided on the front side of the branch breaker 2.

  The energization display means 4 includes a measurement control unit 7 that receives data (the current value of the main breaker 1 and the current value of the branch breaker 2) from each of the main current sensor 3 and the branch current sensor 3, and the main breaker 1 and the branch breaker 2. It comprises a display unit 8 for performing energization display.

  As shown in FIGS. 6A and 6B, the display unit 8 has a long box-like case 8a with an open rear surface, and a long printed board 8b is accommodated in the case 8a. Has been. The printed board 8b has a plurality of (three in the present embodiment) indicator lights (hereinafter referred to as “main indicator lights” if necessary) 80 and a plurality of branch breakers 2 in a one-to-one correspondence. A plurality of (in this embodiment, 34 as the number of branch breakers 2) indicator lights 81 (hereinafter referred to as “branch indicator lamps” as necessary) 81 for audible notification A buzzer 82 (for alarm), a main indicator lamp 80, a branch indicator lamp 81, and a drive circuit unit 83 for controlling the buzzer 82 are mounted. Further, the case 8a is provided with a plurality of rectangular openings 8c for emitting light emitted from the main indicator lamp 80 and the branch indicator lamp 81 to the outside, and a sound hole 8d for the buzzer 82. Is provided.

In the following description, in order to distinguish the plurality of main indicator lamps 80, the plurality of main indicator lights 80 are represented by reference numerals 80A to 80C and the plurality of branch indicator lights 81 are distinguished as necessary. As necessary, the plurality of indicator lamps 81 are denoted by reference numerals 81A ₁ to 81A ₁₈ and 81B _{1 to} 81B ₁₆ . In addition, in the code | symbol of the branch indicator lamp 81 and the branch breaker 2, what has a corresponding relationship is attached | subjected the same subscript. For example, branching indicator 81 subscript is A ₁ indicates that used to display the current status of the branch breakers 2A _1. In the drawings, reference numeral _{2 (2A 1 ~2A 18, 2B} 1 ~2B 16), 80 (80A~80C), are omitted part of the _{81 (81A 1 ~81A 18, 81B} 1 ~81B 16) .

On one end side in the longitudinal direction of the printed circuit board 8b (left end side in FIG. 4A), a plurality of main indicator lamps 80A to 80C extend along the short direction of the printed circuit board 8b (up and down direction in FIG. 4A). Are mounted at regular intervals. In addition, 18 branching indicator lamps 81A _{1 to} 81A ₁₈ are arranged along the longitudinal direction of the printed circuit board 8b at the edge of one end side in the short direction of the printed circuit board 8b (the upper end side in FIG. 4A). is implemented at intervals, the edge of the lateral direction other end side (lower side in FIG. 4 (a)) of the printed circuit board 8b is 16 branching indicator _81B 1 _{~81B 16} is a longitudinal direction of the printed board 8b Are mounted at regular intervals along the line. A buzzer 82 is mounted on the other end in the longitudinal direction of the printed board 8b.

Further, 18 of the first for 1-16 th branch counted from main trunk display lamp 80 side of the branching indicator 81A ₁ ～81A ₁₈ that is arrayed at the edge of widthwise direction end side of the printed circuit board 8b Up to the indicator lamp 81 (that is, the indicator lamps 81A _{1 to} 81A ₁₆ for branching), the indicator lamps 81B _{1 to} 81B ₁₆ for branching arranged at the edge on the other end side in the short side of the printed circuit board 8b and the printed circuit board 8b. They are lined up along the short direction.

  By the way, the interval between the branch indicator lamps 81 in the direction along the longitudinal direction of the printed circuit board 8b is equal to the interval between the branch breakers 2, and between the main indicator lamp 80 and the branch indicator lamp 81. The interval is also equal to the interval between the branch breakers 2. Further, the interval between the branching indicator lamps 81 in the short direction of the printed circuit board 8b is equal to the interval between the main indicator lamps 80A and 80C.

By arranging such a display unit 8 on the front side of the locking member 64 as shown in FIG. 4, each of the branch indicator lights 81A _{1 to} 81A ₁₈ is in the vicinity of each of the branch breakers 2A _{1 to} 2A ₁₈ (see FIG. 4 (a), located below) in (b), respectively branching indicator _81B 1 _{~81B 16} is, branch breakers _2B 1 _{~2B 16} near each (FIG. 4 (a), the upper in (b)) By looking at the branch indicator lamp 81, it is possible to grasp the energization state of the corresponding branch breaker 2. Further, since the main indicator light 80 is disposed between the branch breaker 2 and the main breaker 1 closest to the main breaker 1, the main indicator light 80 is not mistaken for the branch indicator lamp 81. . Further, since the display unit 8 is arranged so as to cover the locking member 64 that needs to be hidden from the appearance problem, the space in the cabinet 9 can be used effectively, and the cabinet is provided when the display unit 8 is arranged. 9 does not need to be enlarged.

  In the distribution board of the present embodiment, light emitting diodes (LEDs) of the same size are employed as the indicator lamps 80 and 81, and in particular, the main indicator lamp 80 uses LEDs having different light colors. For example, an LED that emits orange light is used as the main indicator light 80A, an LED that emits yellow-green light is used as the main indicator light 80B, and a green light is used as the main indicator light 80C. LED which emits the light of is used. Further, as the branching indicator lamp 81, an LED that emits red light is used. However, the above example is merely an example, and is not intended to be limited to this, and may be changed as appropriate.

  The drive circuit unit 83 is composed of, for example, an integrated circuit including a CPU, and supplies power to the main indicator lamp 80, the branch indicator lamp 81, and the buzzer 82, so that the main indicator lamp 80 and the branch indicator lamp 81 are provided. The lighting state (for example, lighting, extinguishing, blinking, etc.) is changed and the buzzer 82 is sounded.

  Based on the control data output from the measurement control unit 7, the drive circuit unit 83 performs lighting of the main indicator lamp 80 and the branch indicator lamp 81, and the buzzer 82 ringing. The drive circuit unit 83 has a dimming function for adjusting the brightness (brightness) of each of the main indicator lamp 80 and the branch indicator lamp 81, and each of the main indicator lamp 80 and the branch indicator lamp 81. Is set to a brightness corresponding to the dimming signal given from the measurement control unit 7. In addition, as a method of dimming control of the main indicator lamp 80 and the branch indicator lamp 81, a conventionally well-known method such as PWM control can be adopted, and detailed description thereof is omitted.

  That is, in this embodiment, the measurement control unit 7 plays a role as a control unit of the energization display unit 4.

  The measurement control unit 7 has a container body 7a made of, for example, an insulating resin material. The container body 7a has a size of two branch breakers 2 arranged in the width direction (short direction). Is formed. On the side wall portion on one end side in the longitudinal direction of the container body 7a, a terminal portion 7b connected to the edge portion in the width direction of the branching conductive bar 60a or the conductive bar 61 provided on the conductive bar 60, a sensor block 62, And a sensor connecting portion (not shown) used for the connection. Moreover, the terminal part 7c connected to the output terminal part of the main breaker 1 or the display unit 8 is formed in the side wall part of the longitudinal direction other end side of the container 7a. Similarly to the branch breaker 2, the container body 7 a is provided with a locking projection 7 d that is fitted into the locking hole 64 a of the locking member 64.

  A printed circuit board (not shown) is accommodated in the body 7a, and various electronic components are mounted on the printed circuit board. The current value (main circuit breaker 1) is supplied from the main current sensor 3 and the branch current sensor 3. Current collecting value or current value of the split circuit breaker 2), a storage unit 71 made of a non-volatile memory and storing each current value collected by the data collecting unit 70, and a data collecting unit An arithmetic processing unit 72 that generates control data of the display unit 8 based on the current value collected at 70, an output unit 73 that outputs the control data generated by the arithmetic processing unit 72 to the display unit 8, and the branch breaker 2 An operation input unit 74 for changing settings and the like is configured. The measurement control unit 7 may have a function of outputting data such as each current value collected by the data collection unit 70 to an external device (for example, a device that counts power consumption).

  The operation input unit 74 is for changing various settings in the measurement control unit 7, and includes a setting switch 74a, a feed switch 74b, a changeover switch 74c, a volume adjustment switch 74d for the buzzer 82, and a main breaker. 1 of the rated current setting switch 74e and an adjustment switch 74f for adjusting the brightness of the main indicator lamp 80 and the branch indicator lamp 81, and these switches 74a to 74f are all exposed on the front surface of the body 7a. It is installed. The above example is merely an example, and is not intended to limit the configuration of the operation input unit 74 to the above example.

  The data collection unit 70 collects the current value of the branch breaker 2 from the sensor unit 62d by outputting the trigger signal described above. The data collection unit 70 collects the current value of the main breaker 1 from the main current sensor for the main breaker 1 connected to the measurement control unit 7. Therefore, in the distribution board of the present embodiment, the current value supplied to the main electrical circuit 10 via the main breaker 1 is measured by the main current sensor and the plurality of branch current sensors 3, and the branch breaker 2 is provided. A measuring means for measuring the current value supplied to the electric device via each of the plurality of branch breakers 2 is configured.

  Here, the measurement control unit 7 is connected to each sensor unit 62d of the sensor block 62 by a transmission line L as shown in FIG. Here, the transmission path L connects the plurality of sensor units 62d to the measurement control unit 7 using three lines of the trigger transmission line L1, the data transmission line L2, and the ground line L3. The transmission line L1 is for sequentially transmitting the trigger signal output from the data collection unit 70 to the plurality of sensor units 62d, and the plurality of sensor units 62d are connected to the data collection unit 70 by the trigger transmission line L1. Connected to. The data transmission line L2 is for transmitting the current value output from each sensor unit 62d to the data collection unit 70. The ground line L3 is used as a voltage reference for the trigger transmission line L1 and the data transmission line L2 in the measurement control unit 7, each sensor unit 62d, and the like. For the ground line L3, illustration of the connection portion with the sensor unit 62d is omitted for the sake of simplification of the drawing.

  Based on the current value of the main breaker 1 and the current value of each branch breaker 2 collected by the data collection unit 70, the arithmetic processing unit 72 indicates the energization state of the main breaker 1 and the energization state of each branch breaker 2 to the display unit 8. Create control data to display.

  Here, the control data is created as follows. First, when the arithmetic processing unit 72 obtains the current value of the main breaker 1 and the current value of each branch breaker 2 from the data collection unit 70, the calculation unit 72 calculates the ratio (percentage in this embodiment) to the rated current from each current value. calculate. Next, the arithmetic processing unit 72 determines the lighting state of the main indicator lamp 80 and the branch indicator lamp 81 according to the calculated ratios.

  For example, if the current value of the main breaker 1 is 5% or less of the rated current value, the arithmetic processing unit 72 determines that no current flows through the main breaker 1, and all of the main indicator lights 80A to 80C. Create control data to turn off. Conversely, if the current value of the main breaker 1 exceeds 5% of its rated current value, it is determined that the main breaker 1 is in an energized state. At this time, depending on whether the current value of the main breaker 1 is more than 5% of the rated current value, less than 20%, more than 20%, less than 80%, more than 80%, less than 100%, more than 100%, The combination of the lighting states of 80C is made different. For example, if the current value of the main breaker 1 exceeds 5% of the rated current value and is equal to or less than 20%, the arithmetic processing unit 72 creates control data indicating that the main indicator lamp 80C is lit, and exceeds 20%. If it is less than or equal to%, control data for lighting both the main indicator lamps 80B and 80C is created. If more than 80% and 100% or less, all the main indicator lights 80A to 80C are turned on. Control data is created, and if 100% is exceeded (that is, an overcurrent state), control data is created to flash all the main indicator lights 80A to 80C.

  On the other hand, if the current value of the branch breaker 2 is 5% or less of the rated current value, the arithmetic processing unit 72 determines that no current flows through the branch breaker 2, and the branching breaker 2 corresponding to this branch breaker 2 is used. Control data for turning off the indicator lamp 81 is created. Conversely, if the current value of the branch breaker 2 exceeds 5% of its rated current value, it is determined that the main breaker 1 is in an energized state. At this time, the current value of the main breaker 1 is 5% of its rated current value. If the percentage exceeds 100% or less, control data for turning on the corresponding branch indicator lamp 81 is created, and if it exceeds 100% (that is, an overcurrent state), the corresponding branch indicator lamp 81 blinks. Create control data to that effect. Such a determination is made for all branch breakers 2.

  That is, the arithmetic processing unit 72 determines that the current value of the branch breaker 2 obtained by the branching current sensor 3 is a predetermined threshold value equal to or lower than the rated current value of the branch breaker 2 (in the above example, 5% of the rated current value). Is smaller than the threshold value), it is determined that no current is being supplied to the electrical equipment via the branch breaker 2, and if it is greater than the predetermined threshold, the current is passed to the electrical equipment via the branch breaker 2. Is determined to be in the energized state, and when it is determined as the non-energized state (when the current value of the branch breaker 2 is 5% or less of the rated current value) and when it is determined as the energized state (current of the branch breaker 2) When the value exceeds 5% of the rated current value), it has an energization display function that changes the lighting state of the branch indicator lamp 81.

  By the way, the arithmetic processing unit 72 creates control data for sounding control of the buzzer 82 in addition to control data for lighting control of the main indicator lamp 80 and the branch indicator lamp 81.

  For example, if the current value of the branch breaker 2 is more than 100% of the rated current value and less than 110%, the arithmetic processing unit 72 creates control data for sounding the buzzer 82 at intervals of 3 minutes, 110% or more If it is less than 120%, control data for sounding the buzzer 82 at intervals of 10 seconds is created, and if it is 120% or more, control data for sounding the buzzer 82 at intervals of 5 seconds is created. Thus, when creating the control data regarding the buzzer 82, data indicating the volume of the buzzer 82 is added to the control data. Data indicating the volume of the buzzer 82 is selected (for example, “Large”, “Small”, “Off” is selected) by the volume adjustment switch 74d of the operation input unit 74 (“Off” indicates that no sound is generated). ). It should be noted that a volume or the like may be used for the volume adjustment switch 74d so that the volume can be adjusted in more stages.

  The above-described measurement control unit 7 can operate in the energy saving mode in addition to the above-described operation (operation in the normal mode). Switching between the energy saving mode and the normal mode is performed by the changeover switch 74c of the operation input unit 74.

  In the energy saving mode, when the arithmetic processing unit 72 obtains the current value of the main breaker 1 and the current value of each branch breaker 2 from the data collection unit 70 as in the normal mode, the ratio of the current value to the rated current is obtained. (In this embodiment, the percentage is used).

  As a result, if the current value of the main breaker 1 is 100% or less of the rated current value, the arithmetic processing unit 72 creates control data indicating that all the main indicator lights 80A to 80C are turned off, and the rated current If the value exceeds 100%, control data for flashing all the main indicator lights 80A to 80C is created. That is, until the current value of the main breaker 1 exceeds 100% of its rated current value, the main indicator lamp 80 is not lit, so that power consumption is reduced compared to the normal mode.

  The arithmetic processing unit 72 creates control data for turning off the branch indicator lamp 81 corresponding to the branch breaker 2 if the current value of the branch breaker 2 is 100% or less of the rated current value, If it exceeds 100%, control data for blinking the corresponding branch indicator lamp 81 is created. That is, until the current value of the branch breaker 2 exceeds 100% of its rated current value, the branch indicator lamp 81 does not light up and does not display whether or not the branch breaker 2 is energized (that is, By not executing the energization display function), power consumption is reduced compared to the normal mode. Therefore, the changeover switch 74c serves as a determination unit that determines whether or not to use the energization display function.

  By the way, in the measurement control unit 7, the rated current value of the main breaker 1 can be set by the rated current setting switch 74 e of the operation input unit 74. As the rated current setting switch 74e, for example, a volume or the like is used, and the arithmetic processing unit 72 sets the rated current value of the main breaker 1 to a value (for example, 30A) corresponding to the rotational position of the rated current setting switch 74e. Range of ~ 100A).

  In the measurement control unit 7, the arithmetic processing unit 72 includes a rated current setting mode for changing the magnitude of the rated current value of the branch breaker 2 in addition to the normal mode and the energy saving mode described above, and the branch breaker 2. And a rated voltage setting mode for changing the magnitude of the rated voltage value.

  The transition from the normal mode or the energy saving mode to the rated current setting mode or the rated voltage setting mode can be performed by the setting switch 74a of the operation input unit 74. In the case of the present embodiment, when the setting switch 74a is continuously pressed for about 3 seconds, the calculation processing unit 72 shifts to the rated current setting mode, and when the setting switch 74a is continuously pressed for about 5 seconds, the calculation processing unit 74 is Switch to setting mode. The arithmetic processing unit 72 rings the buzzer 82 only once when shifting to the rated current setting mode, and rings the buzzer 82 only twice when shifting to the rated voltage setting mode. You may make it alert | report that it switched.

  When the arithmetic processing unit 72 shifts to the rated current setting mode, the arithmetic processing unit 72 waits for input of the feed switch 74b, and switches the branch breaker 2 to be set for the rated current value every time the feed switch 74b is operated.

  In this case, the arithmetic processing unit 72 turns on the branch indicator lamp 81 corresponding to the branch breaker 2 designated by the feed switch 74b and turns off the branch indicator lamp 81 corresponding to the other branch breaker 2. Create control data. That is, the arithmetic processing unit 72 changes the lighting state of the branch indicator lamp 81 corresponding to the branch breaker 2 specified by the feed switch 74b from the lighting state of the other branch indicator lamps 81, thereby specifying the specified branch. The breaker 2 is displayed.

  In addition, the arithmetic processing unit 72 sets the combination of the lighting states of the main indicator lamp 80 to a combination associated with the current rated current value of the branch breaker 2 designated by the feed switch 74b. At this time, every time the setting switch 74a is operated, the arithmetic processing unit 72 changes the setting of the rated current value in a predetermined cycle. In the present embodiment, the rated current value of the branch breaker 2 can be selected from five types of “15A”, “20A”, “30A”, “others”, and “sunlight”. In the case of “20A”, only the main indicator lamp 80B is turned on, in the case of “30A”, only the main indicator light 80A is turned on. In the case of “”, all the main indicator lamps 80A to 80C are extinguished, and in the case of “sunlight”, control data is generated to turn on all the main indicator lights 80A to 80C. Further, the arithmetic processing unit 72 stores the change contents if there is no input of the setting switch 74a or the feed switch 74b for a certain period of time in the rated current setting mode, and changes from the rated current setting mode to the normal mode (or energy saving mode). Return. This also applies to the rated voltage setting mode.

  When the arithmetic processing unit 72 shifts to the rated voltage setting mode, the arithmetic processing unit 72 waits for an input of the feed switch 74b, and switches the branch breaker 2 to be set with the rated voltage value every time the feed switch 74b is operated.

  In this case, the arithmetic processing section 72 turns off the branch indicator lamp 81 corresponding to the branch breaker 2 designated by the feed switch 74b and turns on the branch indicator lamp 81 corresponding to the other branch breaker 2. Create control data. That is, the arithmetic processing unit 72 differs from the lighting states of the other branch indicator lamps 81 in the lighting state of the branch indicator lamp 81 corresponding to the branch breaker 2 specified by the feed switch 74b, as in the rated current setting mode. The designated branch breaker 2 is displayed. In the rated current setting mode and the rated voltage setting mode, the branch indicator lamp 81 corresponding to the branch breaker 2 designated by the feed switch 74b is turned on. The combination of the state and the lighting state of the other branch indicator lamp 81 is made different so that the rated current setting mode and the rated voltage setting mode can be easily distinguished.

  In addition, the arithmetic processing unit 72 sets the combination of the lighting states of the main indicator lamps 80 to a combination associated with the current rated voltage value of the branch breaker 2 designated by the feed switch 74b. At this time, every time the setting switch 74a is operated, the arithmetic processing unit 72 changes the setting of the rated voltage value in a predetermined cycle. In the present embodiment, the rated voltage value of the branch breaker 2 can be selected from two types of “100 V” and “200 V”. In the case of “100 V”, all of the main indicator lamps 80A to 80C. Is turned on, and in the case of “200 V”, control data for flashing all of the main indicator lights 80A to 80C is created.

  As is clear from the above configuration, in the distribution board of this embodiment, the feed switch 74b designates the branch breaker 2 that changes the magnitude of the rated current value or the rated voltage value from among the plurality of branch breakers 2. And a selection means for selecting whether the setting switch 74a shifts between the rated current setting mode and the rated voltage setting mode, and the rated current value or rated voltage value of the branch breaker 2 designated by the feed switch 74b It also serves as a changing means for changing the size of the.

  By the way, in the distribution board of this embodiment, the brightness of the main indicator lamp 80 and the branch indicator lamp 81 can be adjusted by the adjustment switch 74f. The adjustment switch 74f is configured by, for example, a volume, and the arithmetic processing unit 72 supplies a dimming signal corresponding to the operation position (rotation position in the case of a volume) of the adjustment switch 74f to the drive circuit unit of the display unit 8. 83 is sent through the output unit 73. As described above, in the distribution board according to the present embodiment, the adjustment switch 74 f constitutes setting means for setting the luminance of the main indicator lamp 80 and the branch indicator lamp 81.

  The cabinet 9 includes a rectangular parallelepiped box-shaped box 90 having an open front surface, and an internal device placement space for storing internal devices such as the main breaker 1 and the branch breaker 2 is provided in the box 90. It has been. As shown in FIGS. 5 and 6, the main breaker 1, the plurality of branch breakers 2, the branch block 6, the measurement control unit 7, and the display unit 8 are accommodated in this internal device arrangement space. At this time, the branch blocks 6 are accommodated in the box 90 so that the arrangement direction is along the longitudinal direction of the box 90. At this time, the display unit 8 is disposed so as to cover the front surface of the locking member 64 as described above, and is thereby used in the vicinity of the branch breaker 2 to display the energization state of the branch breaker 2. A branching indicator lamp 81 is located.

  Thus, as shown in FIG.1 (b) and FIG.2 (b), the inner cover 91 is attached to the box 90 in which each member was accommodated.

  The inner lid 91 is attached to the front surface of the box 90 so as to cover charged portions of the main breaker 1, the branch breaker 2, the branch block 6, and the like. The inner lid 91 includes a rectangular main trunk-side opening 91a that exposes the operation handle 1d, the window 1e, and the test switch 1f of the main breaker 1, each branch breaker 2, the measurement control unit 7, and the display unit 8. A rectangular branch-side opening 91b to be exposed is formed, and even when the inner lid 91 is attached to the box 90 (the state shown in FIGS. 7 and 8), the operation handle 1d of the main breaker 1 and the branch breaker 2 and the operation input unit 74 of the measurement control unit 7 can be operated, and the lighting state of the main indicator lamp 80 and the branch indicator lamp 81 of the display unit 8 can be confirmed.

  By the way, doors 92 to be described later are attached to both ends in the longitudinal direction (both ends in the left-right direction in FIG. 2A) on one end side in the lateral direction (upper end side in FIG. 2A) on the front side of the inner lid 91. A shaft portion 91c is formed. The shaft portion 91c has the same central axis, and the direction of the central axis is the longitudinal direction of the inner lid 91 (equal to the longitudinal direction of the box 90).

  As shown in FIGS. 1 (a) and 2 (a), the door 92 is formed in a plate shape having a size capable of closing the front opening of the box 90. The door 92 has a portion corresponding to the shaft portion 91c. A bearing portion 92a is provided that supports the shaft portion 91c so as to be rotatable about its central axis. Therefore, the door 92 is attached to the box 90 so that the front opening of the box 90 can be opened and closed. Further, as shown in FIGS. 9A and 9B, the light emitted from the indicator lamps (the main indicator lamp 80 and the branch indicator lamp 81) provided in the display unit 8 is externally applied to the door 92. A plurality of window holes 92b for emitting light are provided.

  Here, the window hole 92b is formed of a rectangular opening having a size capable of bringing the three main indicator lamps 80 together to face the outside, and is formed in the door 92 at equal intervals along its longitudinal direction. Has been. Here, the interval between the window holes 92b is equal to the interval between the branch indicator lamps 81 (that is, the interval between the branch breakers 2) in the direction along the longitudinal direction of the printed circuit board 2b (the arrangement direction of the branch breakers 2). ing. Therefore, in the longitudinal direction of the door 92, the branch indicator lamp 81 individually faces the outside through the window hole 92b. That is, the window hole 92b is formed in such a size that the light emitted from one indicator lamp 80, 81 can be emitted to the outside in the arrangement direction of the branch breakers 2. Therefore, the part between the window holes 92b in the door 92 acts as a light shielding wall, which makes it easy to visually recognize which indicator lamps 80 and 81 emit light.

Incidentally, the plurality of window holes 92 b are provided at the bottom of a long strip-shaped recess 92 c formed in the front surface of the door 92. The recess 92c is a portion of the door 92 covering the internal device placement space in the box 90, it is provided in the form of Oite transverse in the direction along the (lateral direction in FIG. 2 (a)) the arrangement direction . In other words, the region where the plurality of window holes 92b is formed along the arrangement direction in the door 92, a portion of the door 92 covering the internal device placement space in the box 90, Oite transverse direction along said arrangement direction is doing.

  A translucent cover 93 made of a resin molded product using a transparent resin material (for example, acrylic resin) is fitted into the recess 92c.

  Here, a film (not shown) having a predetermined light transmittance is attached to the front surface of the light transmitting cover 93 so as to cover the entire surface. The light transmittance of the film is set to a value that allows the light emitted from the indicator lamps 80 and 81 to be emitted to the outside of the box 90 and to suppress the incidence of light from the outside of the box 90 into the box 90. Yes. That is, a part of the translucent cover 93 is made of a member that emits the light emitted from the indicator lamp to the outside of the box and suppresses the light from entering the box from the outside of the box.

  By using such a translucent cover 93, it is difficult to see the inside of the cabinet 9 (in the box 90) through the translucent cover 93, while the light emitted from the indicator lights 80 and 81 can be seen from the outside of the cabinet 9. Can be.

In addition, as shown in FIGS. 9A and 9B, a plurality of name display portions 94 that display the names of the electrical devices connected to the branch breaker 2 are provided on the front side of the door 92. Here, each of the plurality of name display portions 94 is a portion of the door 92 (that is, the window hole) from which the light emitted from the branch indicator lamp 81 that displays the energization state of the branch breaker 2 corresponding to the name display portion 94 is emitted. 92b). In addition, as the name display part 94, the seal | sticker writable with a writing instrument, the seal | sticker in which the name of the electric equipment was described previously, etc. are employable. Note that Name display unit 94 is illustrated only in FIG.

  According to the distribution board of the present embodiment described above, the light emitted from the indicator lamps 80 and 81 is emitted from the inside of the box 90 to the outside of the box 90 through the window hole 92b and the translucent cover 93. Therefore, the door 92 is closed. Since the lighting state of the indicator lamps 80 and 81 can be visually recognized even if the door is left open, it is possible to grasp the energized state of the branch breaker 2 without opening the door 92, and the translucent cover 93 is provided from outside the box 90 to inside the box 90. Since the incidence of light on is suppressed, the inside of the box 90 becomes difficult to see when checking the lighting state of the indicator lamps 80 and 81, so that the appearance can be improved.

Further, the window hole 92b provided in the door 92 is large enough to emit light emitted from one of the indicator lamps 80 and 81 in the arrangement direction of the branch breakers 2 (left and right direction in FIG. 9B). Therefore, it is possible to suppress erroneous recognition of which indicator lights 80 and 81 are shining, and a plurality of window holes 92b are formed in the door 2 along the arrangement direction. region to be the site of the door 92 covering the internal device placement space in the box 90, because they were Oite transverse direction along the array direction, the internal equipment inside equipment arrangement space for the box 90 (main breaker 1 and the branch breaker 2) are changed in position, and even if the positions of the plurality of indicator lamps 80 and 81 are changed, the light emitted from the plurality of indicator lamps 80 and 81 can be transmitted to the plurality of window holes 9. b, the same door 92 can be used regardless of the arrangement position of the internal device in the internal device arrangement space, and there is no need to replace the door 92 according to the arrangement of the internal device. .

  Furthermore, on the front side of the door 92, a name display unit 94 for displaying the name of the electric device connected to the branch breaker 2 is provided. The name display unit 94 is a branch breaker corresponding to the name display unit 94. Since the light emitted from the branching indicator lamp 81 for displaying the energized state is disposed in the vicinity of the portion of the door 92 from which the light is emitted, the electric device and the branching indicator lamp 81 can be connected even when the door 92 is closed. The correspondence can be easily known.

  Further, when the installation location of the box 90 is relatively dark, the light of the indicator lamps 80 and 81 feels dazzling, or when the installation location of the box 90 is relatively bright, the light of the indicator lamps 80 and 81 is difficult to see. Even so, the brightness of the indicator lamps 80 and 81 can be changed by the adjustment switch 74f, so that the indicator lamps 80 and 81 can be turned on with brightness according to the installation location of the box 90. The brightness of 80, 81 can be set so that it is easy to see.

  By the way, in the above example, the name display unit 94 is placed in the vicinity of the portion of the door 92 where the light emitted from the branching indicator lamp 81 that displays the energization state of the branch breaker 2 corresponding to the name display unit 94 is emitted. However, when at least a part of the name display portion 94 is formed of a translucent material, the name display portion 94 is radiated from the branch indicator lamp 81 that displays the energization state of the branch breaker 2 corresponding to the name display portion 94. You may arrange | position in the position which overlaps the site | part of the door 92 from which the light was radiate | emitted. In this case, the name display unit 94 is illuminated from behind by the branching indicator lamp 81, and this also makes it easy to understand the correspondence between the electric device and the indicator lamp.

  In the present embodiment, a film having a predetermined light transmittance is affixed to the front surface of the translucent cover 93, but such a film may be affixed to the rear surface of the translucent cover 93. May be applied to the surface of the translucent cover 93. Further, the film is not necessarily required. By using a material having a lower light transmittance as the material of the translucent cover 93, the entire translucent cover 93 can transmit the light emitted from the indicator lamps 80 and 81 to the box 90. You may make it consist of the member which radiate | emits outside and can suppress the incidence | injection of the light into the box 90 from the box 90 outside.

  By the way, the distribution board of the present embodiment is merely one embodiment of the present invention, and is not intended to limit the present invention to the distribution board of the present embodiment, and does not depart from the spirit of the present invention. Of course, changes can be made.

(Embodiment 2)
As shown in FIG. 10, the distribution board of the present embodiment is different from that of the first embodiment in that it includes two display units 8. In the following description, one display unit (upper display unit in FIG. 10) 8 is represented by reference numeral 8A, and the other display unit (lower display unit in FIG. 10) 8 is represented by reference numeral 8B. Moreover, in the distribution board of this embodiment, about the structure similar to Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

As shown in FIG. 10, each of the display units 8A and 8B has a long box-shaped case 8a having an open rear surface, and a long printed circuit board (not shown) is included in the case 8a. Is stored. A plurality of branch indicator lamps 81A _{1 to} 81A ₁₈ corresponding to each of the plurality of branch breakers 2A _{1 to} 2A ₁₈ are mounted on the printed circuit board of the display unit 8A at equal intervals along the longitudinal direction of the printed circuit board. Yes.

On the other hand, the printed circuit board of the display unit 8B, a plurality of branching indicator _81B 1 _{~81B 16} corresponding to the plurality of branch breakers _2B 1 _{~2B 16} respectively, at equal intervals in the implementation in the longitudinal direction of the printed circuit board Has been. Further, a buzzer 82 is mounted on one end of the display unit 8B in the longitudinal direction of the printed board (the right end in FIG. 10). In this embodiment as well, the interval between the branching indicator lamps 81 in the direction along the longitudinal direction of the printed circuit board 8b is equal to the interval between the branch breakers 2.

  Each case 8a of the display units 8A and 8B is provided with a plurality of rectangular openings 8c for individually emitting the light emitted from the branching indicator lamp 81 to the outside. In addition, a sound hole 8d for the buzzer 82 is provided in the case 8a of the display unit 8B.

In the first embodiment, the display unit 8 is arranged so as to cover the locking member 64. However, as shown in FIG. 10, the display unit 8A is a secondary side of the branch breakers 2A _{1 to} 2A ₁₈ , that is, the display unit 8A. It is disposed at the side where the power supply line from the electrical equipment is connected in the branch breakers 2A ₁ ~2A _18. Therefore, the branching indicator _81A 1 _{~81A 18,} will be located respectively secondary side of the corresponding branch breakers _2A 1 _{to 2A region 18,} by looking at the branching indicator _81A 1 _{to A 18,} corresponding it is possible to grasp the current state of the branch breakers _2A 1 _{~2A 18.}

The display unit 8B, the secondary side of the branch breakers _2B 1 _{~2B 16,} i.e. the power line from electrical equipment in branch breakers _2B 1 _{~2B 16} is arranged on the side to be connected. Therefore, the branching indicator _81B 1 _{~81B 16,} will be located respectively secondary side of the corresponding branch breakers _2B 1 _{~2B 16,} by looking at the branching indicator _81B 1 _{~81B 16,} corresponding The energization state of the branch breakers 2B _{1 to} 2B ₁₆ can be grasped.

  Along with the change as described above, the inner lid 91 in the present embodiment is provided with a concealing portion 91d for concealing the locking member 64, whereby the branch side opening 91b is in the short direction of the inner lid 91. In 2 minutes.

  By the way, in a distribution board, the name display part 94 which describes the name of the electric equipment etc. which are connected to the branch breaker 2 is often provided in the secondary side of the branch breaker 2.

  For example, in the distribution board of the present embodiment, the electricity connected to the branch breaker 2 at the opening edge of the branch side opening 91b opposite to the concealing part 91d (that is, the secondary side of the branch breaker 2). A name display section 94 for describing the name of the device is provided. The name display portion 94 is provided in a shape corresponding to each branch breaker 2. The name display unit 94 is the same as that described in the first embodiment.

  That is, in the distribution board of the present embodiment, the indicator lamp 81 is arranged on the secondary side of the branch breaker 2, so that the name display unit 94 and the indicator lamp 81 arranged on the secondary side of the branch breaker 2 are brought close to each other. Thus, the correspondence relationship between the electric device and the indicator lamp 81 can be easily known.

The distribution board of Embodiment 1 is shown, (a) is a perspective view of the state which closed the door of the cabinet, (b) is a perspective view of the state which opened the door of the cabinet. The distribution board same as the above is shown, (a) is a front view in a state where the cabinet door is closed, and (b) is a front view in a state where the cabinet door is opened. It is a schematic explanatory drawing of a distribution board same as the above. The distribution board of the state which removed the door of the cabinet same as the above is shown, (a) is a front view, (b) is the sectional view on the AA line of the same figure (a). The distribution board of the state which removed the door and inner cover of the cabinet same as the above is shown, (a) is a perspective view, (b) is a perspective view before attaching a display unit. The distribution board of the state which removed the door and inner cover of the cabinet same as the above is shown, (a) is a front view, (b) is a front view before attaching a display unit. The sensor block in the same as above is shown, (a) is a plan view, (b) is a top view, (c) is a bottom view, (d) is a cross-sectional view taken along line BB in FIG. Is a side view. It is an external view of the sensor block in the same as the above. The distribution board same as the above is shown, (a) is a front view with the translucent cover removed, and (b) is a perspective view with the translucent cover removed. It is a front view of the electricity distribution panel of Embodiment 2.

Explanation of symbols

1 main breaker _{2 (2A 1 ~2A 18, 2B} 1 ~2B 16) branch breakers 3 branch current sensor 7 measuring control unit (controller)
_{81 (81A 1 ~81A 18, 81B} 1 ~81B 16) indicator (branching indicator)
90 Box 92 Door 92b Window hole 93 Translucent cover

Claims (4)

The main breaker, a plurality of branch breakers provided on the branch circuit that branches from the main circuit connected to the secondary side of the main circuit breaker and supplies electric power to the electric device, and the electric circuit are supplied to the electric device via the branch breaker. Measuring means for measuring the current value for each of the plurality of branch breakers, a plurality of indicator lights for displaying the respective energization states of the plurality of branch breakers, and a plurality of indicator lights based on the respective current values obtained by the measuring means The control unit that controls the lighting state of is housed in a box with an open front,
The box is provided with a door that can open and close the front opening of the box. In the box, a plurality of branch breakers are stored side by side along a predetermined arrangement direction, and each indicator lamp has a corresponding branch breaker. Stored in the vicinity,
The door is provided with a window hole for emitting the light emitted from the indicator lamp to the outside, and a translucent cover for closing the window hole,
At least a portion of the translucent cover, Ri Do of suppressing member incidence of light to emit light emitted from the display light to the outside of the box, and from outside the box to the box,
The window holes are formed in such a size that the light emitted from one indicator lamp can be emitted to the outside in the arrangement direction, and a light shielding wall is provided between adjacent window holes,
Region in which a plurality of window opening is formed along the arrangement direction in the door, a portion of the door covering the internal device placement space in the box, characterized that you have traversed in the direction along said arrangement direction Distribution board. Comprising setting means for setting the brightness of the indicator lamp,
The distribution board according to claim 1 , wherein the control unit turns on the indicator lamp with the luminance set by the setting means . 3. The distribution board according to claim 1 , wherein the indicator lamp is disposed on a secondary side to which a power line from an electric device is connected in the corresponding branch breaker . 4. On the front side of the door, a name display unit that displays the name of the electrical device connected to the branch breaker is provided,
The name display part is arranged in the vicinity of the door part where the light emitted from the indicator lamp that displays the energization state of the branch breaker corresponding to the name display part is emitted or in a position overlapping the part. The distribution board of any one of Claims 1-3 characterized by the above-mentioned .

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