JP3145031B2 - Switchboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board provided with a display function for displaying the power usage status of a branch circuit by light emission.

[0002]

2. Description of the Related Art Conventionally, as a distribution board of this type, FIG.
As shown in the figure, a main breaker 110 having a display section 110a for displaying a load current value in a liquid crystal display on a box-shaped distribution board main body 100, a ground fault breaker 120, and a plurality of branch breakers 13
0, and the openings 140a, 140b, 1
In some cases, a lid 140 having a cover 40c is attached, and a breaker switch is exposed in each opening. According to this switchboard, the power usage can be known by looking at the current value displayed on the display unit 110a, and the operation of the device such as turning on or off the breaker can be performed from the outside of the switchboard. It was like.

[0003]

By the way, it is easier to display the load current by displaying the magnitude of the current by a change in the length or area of the display portion, as in a bar graph, than by displaying the current value as a number. It is conceivable to provide a display unit 110a configured to be displayed in a bar graph form separately from the breaker. In addition, if the load current value of each branch circuit can be viewed as well as the main breaker 110, the power consumption status of each circuit can be intensively monitored and managed.
It is conceivable that a is provided for each branch breaker and these are arranged on the lid 140.

However, since the openings 140a, 140b, and 140c for operating the device are formed in the lid 140 as in the above-described conventional case, the occupied area of the display unit 110a configured to be capable of displaying a bar graph is reduced. However, there is a problem that the display is difficult to see and the arrangement method becomes difficult, and the advantage of employing the bar graph display is lost.

In this case, the display unit 110a can be disposed on the entire lid surface without forming an opening in the lid 140, and the lid 140 can be provided on the main body 100 so as to be openable and closable so that the device can be operated. Every time the device is operated,
Opening and closing 0 is troublesome, and there is a problem that the maintainability is lower than that of the above-mentioned conventional one. further,
When the lid 140 is provided on the main body 100 so that the lid can be opened and closed, if the lid can be easily opened, a high voltage is applied to parts other than the operation unit of the device.
There is also a possibility that the charged part may be easily touched and cause an accident.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to easily know at a glance the power usage status of a large number of branch circuits by a light-emitting display output, and to turn on or off a breaker from the outside of a distribution board. An object of the present invention is to provide a distribution board which can be operated and is excellent in power monitoring, management and maintenance.

[0007]

To solve the above problems, a distribution board according to the present invention detects a main breaker, a plurality of branch breakers provided corresponding to a branch circuit, and a current value flowing through the breaker. A main body containing signal processing means for calculating and outputting power consumption of the branch circuit; and a linear light emitting portion corresponding to a branch breaker in which a plurality of light emitting elements are arranged in a row. Receiving means for receiving and displaying the power usage status of each branch circuit separately, and an opening / closing operation window for breaker operation corresponding to each breaker provided on the cover surface. Things.

[0008] As the display output means, for example, a light emitting element or the like that changes the emission color or luminance in a stepwise manner according to a predetermined change in power or continuously in accordance with a continuous change in power can be used. According to this, it is possible to more intuitively understand the power consumption status of each branch circuit than to read a numerical value.

According to the above configuration, the power consumption of each branch circuit can be displayed in the form of a bar graph on the linear light-emitting portion, so that the power consumption status can be intuitively recognized, and at the same time, the overall circuit power consumption can be reduced. You can understand the situation at a glance. In addition, since each breaker can be operated from the outside of the distribution board through the openable operation window, maintenance is easy, and there is no risk of touching parts of equipment other than the operation part, so that it is safe. The power consumption of the branch circuit can be obtained by various calculation methods in the arithmetic processing means. Instead of the power consumption, the current used by each circuit is output as information for judging the power usage status, and displayed. And so on.

[0010] In the above configuration, an operation switch electrically connected to the signal processing means is provided on the cover surface so that the light emitting display operation of the display output means can be controlled from outside the distribution board. Various kinds of information are switched to the display output means in accordance with the operation, and light emission can be displayed, so that effective power monitoring and management can be performed.

Further, by using a non-contact operation switch for sensing infrared rays and providing it in the operation window of the main breaker, the space on the cover surface can be effectively used, and the operation window can be opened and closed. By installing a detection switch to detect that it has become unusable and controlling the operation switch to the inactive state when operating the breaker, it is possible to prevent unnecessary light emission operation of the display output means and suppress deterioration of the light emitting element it can.

[0012] Further, an engagement recess for engaging an engagement portion provided on the main body is formed at one end, and the other end is pivotally supported by a lid, and is rotatable. A lock body urged outwardly from the lid and a handle plate formed to be pressable are provided at one end, and are provided on the peripheral surface of the lid so as to be able to advance and retreat inside and outside the lid, and a spring. A grip that is urged outward by an elastic body such as an elastic body, and when the grip is pushed into the lid, the lock body comes into contact with the grip and turns toward the lid. By providing the lid with a locking mechanism configured by disposing the two bodies so that they can be moved,
The lid can be closed by engaging the lock body of the lid with the engaging part of the main body.On the other hand, for opening the lid, the lock body is pushed and retracted into the lid while the handle plate is pressed into the lid. Then, the engagement with the main body is released, and the lid can be separated from the main body as it is. Since the pushing operation of the handle plate is required to open the lid, there is no danger that the lid is opened carelessly, and the danger of touching the inside of the distribution board during the operation can be avoided.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. The distribution board 10 of this example includes a main body 20 in which power distribution components such as a breaker are housed, and a lid 50 having a light emitting display function.

First, the configuration of the main body 20 will be described.
As shown in FIGS. 1 and 2, the main body 20 is formed in an annular shape with a front surface opened and having an appropriate depth and having an appropriate depth, and power distribution components such as a main breaker 25, a power branch bar 28, and a branch breaker 32. And the processing substrate 23 and the like are housed, and the whole is exposed on a skeleton surface such as a wall, or embedded at an appropriate depth.

Each power distribution component housed in the main body 20 is shown in FIG.
As shown in the figure, the main body 20 is mounted on a box-shaped mounting base 22 fixed on a bottom plate 21. This mounting base 2
Reference numeral 2 denotes a structure in which the mounting surface 22a is provided at an appropriate height from the bottom plate 21, and the processing substrate 23, the wire harness 24, and the like can be stored in multiple spaces in a space formed below the mounting surface 22a.

The main breaker 25, as shown in FIG.
A single-phase, three-wire power line 26, which is installed in the main body 20 via a watt-hour meter, is connected to a power supply side terminal of the main body 20 at a substantially central portion thereof. , The power distribution bar 28 is connected.

The power distribution bar 28 is composed of three buses 29, 30, and 31 corresponding to the power line 26. As shown in FIG. 4, the buses 29, 30 are connected to one side of the long conductive plate as shown in FIG. Connection terminals 29a and 30a having screw holes are formed in a shape protruding at regular intervals, and bus bar 31 is provided with insertion pieces 31a of an appropriate length protruding at regular intervals on one side of a long conductive plate. The main body 20 is formed in a comb shape, as shown in FIG.
The bus 29 and the bus 31 are arranged just below the main breaker 25 so as to intersect with each other in order to distribute the load current evenly in a circular shape with a predetermined distance therebetween. Each bus is connected to the main breaker 25, so that each bus 2
A voltage of 100 V is applied to the bus 9, a voltage of 0 V (neutral pole) is applied to the bus 30, and a voltage of 100 V is applied to the bus 31 with a phase opposite to that of the bus 29 with respect to the bus 30.

In addition, the buses 29 and 30 are
As shown in FIG. 7, the connecting terminals 29a and 30a are arranged horizontally adjacent to each other, and are bent horizontally between the two buses, and the bus 31 is disposed below the branch breaker 32.

The branch breaker 32, as shown in FIG.
The same number of branch circuits as the number of branch circuits are radially juxtaposed on the outer periphery of the power branch bar 28. As shown in FIG. 6, each branch breaker 32 has a connection piece 33 formed by folding both ends of a conductive plate of an appropriate length fixed to one of the power supply side terminals 32a, and the power branch bar 28 connected to the other terminal. The projecting piece 31a of the bus bar 31 is connected. A load cable connected to a branch circuit is connected to each of the load-side terminals 32b.

The connection between the branch breaker 32 and the power branch bar 28 is made via a branch switch bar 34 made of a conductive plate of an appropriate length, as shown in FIG.
4 is connected to the connection terminal 29a of the bus 29 (FIG. 10A), the power supply voltage of the branch circuit is set to 200 V, and when the branch switching bar 34 is connected to the connection terminal 30a of the bus 30 (FIG. B)), the power supply voltage of the branch circuit is set to 100V.

As shown in FIG. 7, each branch breaker 32 is provided with a current detecting element 35 for detecting a value of a current flowing through the breaker in series from a power supply side of the breaker to a load side by an element fixing plate 36. It is connected and fixed, and is electrically connected to signal processing means 40 provided on the processing substrate 23 via a lead wire.

The signal processing means 40 is provided in the processing substrate 23, and as shown in FIG.
2, the memory 43 and the like. In each of these units, the input unit 41 converts the detection signal of the current detection element 35 into a voltage,
Amplifying / correcting process to an appropriate voltage value, control unit 4
2 processes the output signal of the input unit 41, outputs a display command to a display output unit 62 provided on the lid 50 based on the calculated value and an output signal of a sensor unit 60 described later, And transmits and receives signals to and from the terminal. Reference numeral 44 is a time measuring means.

The control unit 42 includes an A / D converter 46 for converting an output signal from the input unit 41 into a digital signal, and the arithmetic unit 4
7 and a comparing unit 48, and a calculating unit 47
In the embodiment, the effective value of the AC current is calculated based on the signal digitally converted by the A / D converter 46. That is, as shown in FIG. 9, the current value of the branch breaker 32 detected by each current detection element 35 is quantized by the A / D converter 42 via the input unit 41, and 4
The square operation is performed at 7a. The squared quantized data is temporarily stored in the memory 43. However, in processing step 47b, stored data within a certain time is taken out and its average value is calculated. Further, in processing step 47c, the square root of the average value is calculated. This is the effective value of the alternating current obtained by digital processing.

The calculated effective value is recorded in the memory 43 as needed in association with each branch circuit.
When the power usage status is displayed, it is converted into power and processed according to the display information.

The comparing section 48 compares the effective current value of each branch circuit 32 calculated by the arithmetic section 47 with a predetermined current value at any time, and sets the current effective value at the set current value. When a predetermined condition is reached, a drive signal is output to a display output means 62 provided on the lid 50 to be described later, and a warning is displayed on the lid surface 51 to the effect that the breaker may be shut off. .

Data processing is performed by the signal processing means 40,
Various types of information to be displayed on the display output unit 62 by light emission can be adopted depending on the setting. In this example, each branch circuit at that time is determined according to an operation signal output from the sensor unit 60 provided on the lid 50. At the same time and the monthly power consumption of each branch circuit up to the time is displayed simultaneously, and when the power consumption of any one branch circuit exceeds 80% of the rating, and When the total power consumption exceeds 80% of the rating, a warning display is automatically set to emit light on the display output means 62.

Such a signal processing circuit can be formed on software or on firmware or hardware in one chip. By calculating the effective value of the AC current digitally, the effective value conversion can be performed. No analog parts are required, so that a mounting space, an adjustment operation of an element, and the like are omitted, and an accurate and stable result with few errors can be obtained. Of course, the circuit may be composed of analog components.

Next, the structure of the lid 50 will be described.
As shown in FIGS. 1 and 10, the lid 50 is
0 is formed in a substantially circular shape so as to be able to close the opening, and an opening / closing operation window portion 52 is installed in an opening 51a formed at the center of the lid surface 51, and a linear light emitting portion is provided outside the opening. 6
Display output means 62 comprising light emitting lamps 65 and 64
Are arranged radially in the same number as the branch circuit, and an opening / closing operation window 66 for operating the branch breaker 32 is arranged and provided between the light-emitting lamp 65 and the linear light-emitting portion 64.
The upper part of the main body 20 is pivotally supported by the main body 20, and is attached to the opening surface of the main body 20 by a locking mechanism 67 provided at the lower part so as to be freely attached.

As shown in FIG. 11, the operation window 52 is provided with a hinge body 5 attached to the back edge of the opening 51a of the cover surface 51.
3. It is composed of a locking body 54 and a cap body 55.

The hinge body 53 is formed such that an arm 53b having a mounting portion 53c at the tip is rotatably supported on a hinge 53a protruding from the back edge of the opening 51a. The locking body 54 has a supporting plate 54a provided on the back side edge of the opening 51a, and a locking protrusion 54b having a locking groove 54c formed on the peripheral surface thereof, and the locking groove 54c is formed inside the opening 51a. Is provided.

The cap body 55 includes a cap base 56 formed so as to be fitted into the opening 51a, a cap base bottom plate 57 attached to the bottom surface of the cap base 56, and a cap base 5
The cap 58 formed so as to be able to be fitted into the opening 56a.
And a cap base 56 having a locking piece 59a on the peripheral surface.
And a cap bottom plate 59 slidably formed in a concave portion 56b formed on the back surface of the cap base 5.
6 is screwed to the bottom surface of the cap 58 fitted into the opening 56a from the front side of the cap 6, and the cap 58 is slidably supported in the opening 56a. A cap base bottom plate 57 is attached to the bottom surface of the
1a, one end of the bottom face is screwed to the mounting portion 53c of the hinge body 53, and the locking projection 54b of the locking body 54 is inserted into a hole 57a formed in the cap base plate 57. And is rotatably attached to the lid surface 51.

The cap body 55 is rotated about the hinge 53a of the hinge body 53 as a support shaft, so that the opening 5
1a can be opened and closed (see FIG. 14) and the opening 51a
Is closed, the locking projection 54b of the locking body 54 is inserted through the opening 57a of the cap base bottom plate 57 into the inside of the cap body 55, and the cap 58 is rotated in the direction of the arrow R, so that the locking projection is formed. The locking piece 59a of the cap bottom plate 59 is locked in the locking groove 54c provided on the peripheral surface of the portion 43b, and the cap body 55
Can be fixed in this position. Further, when the cap 58 is rotated in the direction of arrow L from the front side of the lid surface 51, the locking between the locking piece 59a and the locking groove 54c is released, so that the cap body 55 is rotated toward the lid surface side. As a result, the opening 51a can be opened, and the main breaker 25 can be operated.

On the surface of the cap bottom plate 59, an infrared pyroelectric sensor unit 60 is provided. The sensor unit 60 is fitted into a recess 58a provided on the back surface of the cap 58 with the cap bottom plate 59 attached to the cap 58, and a communication hole 58 formed in the recess 58a.
It is provided so that a change in the infrared ray on the surface of the cap 58 can be sensed through b. The output signal of the sensor unit 60 is input to the signal processing unit 40 as an operation signal,
In the signal processing means 40, turning on / off of each display output means 62 and switching of display information are performed.
Note that a push-type operation switch may be used instead of the sensor unit 60.

A detection switch 61 for detecting the open / closed state of the cap body 55 is provided in a concave portion 58c formed on the back surface of the cap 58. The detection switch 61 is provided with a detection actuator 6 protruding from one end.
The connection of the signal line is switched within the switch depending on whether or not 1a is in the pressed state. The actuator 61a is attached to the recess 58c so as to project slightly outside the peripheral surface of the cap 58, FIG.
As shown in (1), the input line F and the GND line of the signal processing means 40 are connected to the signal lines a and b, and the GND line of the sensor unit 60 is connected to the signal line c.

When the opening 51a is closed by the cap 55, the actuator 61a is in contact with a step 56c provided on the inner periphery of the opening 56a of the cap base 56 (see FIG. 12). Connects the signal line b and the signal line c to operate the sensor unit 60. On the other hand, the cap 58 slides to rotate the cap body 55, and the actuator 61a
6, when the contact with the stepped portion 56c is released, the detection switch 61 connects the signal line a and the signal line b, thereby making the sensor unit 60 inactive and the signal processing means 40. Of the input unit F is set to the “L” level to stop the display operation of the calculation unit 40. Therefore, when the hand is brought close to the operation window 52 to operate the master breaker 25, the light emission display operation to the display output means 62 can be automatically stopped, and the deterioration of the light emitting element due to unnecessary display can be prevented. There is no possibility that the operation is performed, and the user may regard the operation as a malfunction.

The display output means 62 receives the output of the signal processing means 40 and emits light to display the power use status of each branch circuit. The linear light emitting portions 63 and 64 are provided with a plurality of light emitting elements in a row. The light-emitting lamp 65 is formed by arranging two or more light-emitting elements having different emission colors in a single reflecting mirror.
At 64, the power use status of the branch circuit is displayed in a light-emitting manner in a bar graph, and a light-emitting lamp 65 displays whether or not the branch circuit is energized.

As shown in FIGS. 14 and 15, the operation window 66 is provided with a frame 66 in an opening 50b formed in the lid 50 so as to correspond to each branch breaker 32 provided in the main body 20.
a, and one end of a cap 66b is pivotally supported on this frame portion 66a so as to be openable and closable. By opening the cap 66b and opening the opening 50b, the branch breaker 3
It is installed so that operation 2 can be performed.

As shown in FIG. 16, the locking mechanism 67 is composed of a handle 69 and a lock 71 provided in a recess 68 provided on the peripheral surface of the back surface of the lid 50.

The handle 69 is slidably locked on the back of the lid 50 so that a shaft 69a of an appropriate length can be moved back and forth from the peripheral edge of the lid 50 toward the center thereof. An elastic body 70 such as a spring is attached to the end on the one side, and this is elastically urged to the outside of the lid, and the outer surface has a size and shape that can be pressed by one hand on the outer end of the lid. The formed handle plate 69b is fixedly mounted so as to be located on the peripheral surface on the back surface side of the lid. In addition, the shaft portion 69a of the handle plate 69 includes
A hole 69c having a width through which the lock body 71 can be inserted in the middle portion.
A locking shaft 69d that comes into contact with the lock body 71 is provided at a position outside the lid of the hole.

The lock body 71 is provided in the hole 6 of the handle 69.
At one end of a plate material having a width and an appropriate length that can be inserted into the engagement recess 9a, an engagement recess 71a that engages with the engagement shaft 72 provided on the main body 20 is formed. The end opposite to the side on which is formed is rotatably supported by a pivot shaft 73a of a locking plate 73 fixed to the back surface of the lid 50, and this is inserted through the hole 69c. And the lid 50
And an elastic body 74 such as a spring is interposed between them, and the elastic body 74 is installed by being resiliently biased to the outside of the lid. An end portion adjacent to the engaging concave portion 71a is a tapered portion.

As shown in FIG. 16, when the handle 69 and the lock body 71 are closed, the engaging shaft 7 of the main body 50 is closed.
2, the engaging recess 71a of the lock body 71 is engaged from the inside of the lid, and the locking shaft 69d of the handle body 69 is mounted on the side of the lock body 71 outside the lid. . Accordingly, when the handle plate 69a of the handle body 69 is pressed into the lid, the locking body 69d is moved in parallel in the same direction to push the lock body 71, and the lock body 71 is moved around the shaft part 73a. Rotate to engage the engaging recess 71a and the engaging shaft 7
When the engagement with the lock member 2 is released and the pressing is stopped, the locking body 69 and the locking body 71 are pushed outward by the elastic bodies 70 and 74, respectively, to return to the original engagement position. It has become.

According to the locking mechanism 67 having the above structure,
When closing the distribution board 10, the lid 50 is applied to the main body 20 and pushed as it is, so that the lock body 71 slides into the main body along the engagement shaft 72 of the main body 20, and the lid 5 is closed.
0 is fitted into the main body 20, and the engagement recess 71a
Engages with the engagement shaft portion 72 to lock the lid 40.

When the handle plate 69a is pressed into the inside of the lid, the handle 69 slides toward the inside of the lid against the elastic body 70, and accordingly, the lock body 71 moves against the inside of the lid against the elastic body 74. Then, the engagement between the engagement concave portion 71a and the engagement shaft portion 72 is released, so that the lid 50 can be removed from the main body 20 and the lid can be opened while the handle plate 69a is being pressed.
In this manner, when opening the lid, it is necessary to rotate the lid 50 while pressing the handle plate 69a, and to avoid the danger of touching the charged portion inside the distribution board during the operation and to handle the lid. It has a structure that can ensure the safety of

Next, the operation of the distribution board having the above-described configuration will be described. While the distribution board 10 is in use, each branch breaker 32
Is detected by the current detecting element 35, the signal processing means 40 performs data processing on various information indicating the power usage status of the branch circuit, and the processing data is recorded in the memory 43 as needed.

Operation window 5 installed at the center of lid 50
When the sensor unit 60 placed in the operation window detects the displacement of the infrared ray, an operation signal is input from the unit to the signal processing means 40, and the current used by each branch circuit at that time is displayed. Output means 6
2 to cause the corresponding linear light-emitting portions 63 and 64 and the light-emitting lamp 65 to emit light.

In this case, as shown in FIG. 17A, the change in the power consumption at that time is expanded and contracted in a bar graph in real time in the linear light emitting section 63, and the linear light emitting section 63 emits light in, for example, green light. The light-emitting unit 64 emits the same amount of power used for the month up to that point in the form of a bar graph, for example, in red. Further, the light-emitting lamp 65 of the branch circuit in which the linear light-emitting portions 63 and 64 are lit also turns green, for example. The linear light-emitting portions 63 and 64 and the light-emitting lamp 65 of the branch circuit that does not use power remain off.

In this display mode, the user can easily know at a glance the power usage status of each branch circuit, and can simultaneously monitor and manage the power usage of all the circuits. In this state, the user again puts his hand over the operation window 52 or when a predetermined time has elapsed after the light emission, the signal processing means 40
Is stopped, and the linear light emitting units 63 and 64 and the light emitting lamp 65 are turned off. When the user again puts his hand over the operation window 52, other display information may be displayed by light emission.

Further, in the comparing section 48 of the signal processing means 40, when the power consumption of the circuit reaches 80% of the rating,
The display output of the display output means 62 is automatically switched to a warning display mode for notifying that there is a risk of the breaker breaking operation.

In this case, when the power consumption of any one of the branch circuits exceeds 80% of the rating, as shown in FIG. 17 (B), the power is supplied to the linear light emitting section 64 of the corresponding branch circuit. Light emission is output in the form of a bar graph, and at the same time, the light emission lamp 65 is lit, for example, in red.

When the total power consumption of all the branch circuits exceeds 80% of the rating, all the light-emitting lamps 65 are turned on in red as shown in FIG. The linear light emitting section 64 of the used branch circuit emits and displays the amount of used power in a bar graph. Both warning displays
When the amount of used power falls below a predetermined value, the display command signal is stopped and turned off.

In this display mode, the user can know the danger of the breaker operating for each circuit or for the entire circuit, and before the breaker shuts off, normally connects the electric equipment in each circuit. Alternatively, it is possible to prevent the failure of the device, which is likely to be caused by the interruption of the supply current during the use of the device, by stopping the use of the device.

In the warning display mode, the linear light emitting portions 63 and 6 are provided so that the user can be informed that there is a risk of the breaking operation of the breaker, and to raise the recognition and call attention.
4 or the light emitting lamp 58 may be flickered, or a caution sound or the like may be generated in conjunction with the lighting thereof.

Further, in this embodiment, the display output means is constituted by the linear light emitting section. However, instead of this, for example, the display output means is changed stepwise by a predetermined power change or continuously by a continuous change of the power. Appropriate display means such as a light-emitting element for changing a light-emitting color or luminance can be used to display the power usage of the branch circuit.

[0054]

The distribution board of the present invention is constructed as described above, and has the following effects. The power usage status of each branch circuit is displayed in the form of a bar graph on the linear light-emitting part, so that it is possible to intuitively know the power usage status rather than reading the numerical values, and at the same time at a glance the power usage status of the entire circuit , It is possible to monitor and manage the power usage of all circuits at the same time.

In this case, by operating the operation switch provided on the lid to display various kinds of information on the use of power on the display output means, the efficiency of power monitoring and the like can be improved, and the visual effect can be improved.

Further, the main breaker and each branch breaker can be operated through the opening / closing operation window provided on the lid, so that maintenance is easy and there is no need to open the lid. Accidents such as touching a charged part or the like in the main body with the hand can be prevented, which is safe.

If a non-contact sensor unit that detects infrared rays is used as an operation switch and is installed in an openable / closed operation window, the space on the lid surface can be effectively used. By installing a detection switch that detects the open state and controlling the operation switch to the inactive state when operating the breaker, unnecessary light emission operation of the display output means is eliminated, and deterioration of the light emitting element is suppressed. can do.

Further, by providing a locking mechanism on the lid so as to open the lid while pulling the handle plate, it is possible to avoid the danger of touching the charged portion inside the main body during operation, and to handle the lid. Safety can be ensured.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a distribution board of the present invention,
(A) is a front view, (B) is a side view.

FIG. 2 is a component layout diagram of a main body.

FIG. 3 is an exploded perspective view showing an internal component arrangement state of the main body.

FIG. 4 is an external view of a power distribution bar.

FIG. 5 is a wiring diagram of a power distribution bar.

6A and 6B are diagrams showing a connection method between a branch breaker and a power branch bar, wherein FIG. 6A shows a case where the branch circuit voltage is set to 200V, and FIG. 6B shows a case where the branch circuit voltage is set to 100V.

FIG. 7 is a diagram illustrating an attached state of a current detection element.

FIG. 8 is a signal system diagram of the distribution board of the present invention.

FIG. 9 is a signal system diagram of the signal processing unit of FIG. 8;

10A and 10B show a configuration of a lid, wherein FIG. 10A is a component arrangement view, and FIG. 10B is a side sectional view.

FIG. 11 is an exploded perspective view of the openable operation window when viewed from the back side of the lid.

FIG. 12 is a layout view of a cap stand and a cap of the operation window portion of FIG. 11;

FIG. 13 is a wiring diagram inside the operation window unit of FIG. 11;

FIG. 14 is a schematic diagram showing a breaker arrangement state of the main body of the distribution board and an arrangement state of the operation window of the lid.

FIG. 15 shows an operation window of the branch breaker;
(A) is a position correspondence diagram of the operation window portion and the breaker, and (B) is a schematic sectional view of a branch breaker arrangement position.

FIG. 16 is a diagram for explaining a configuration of a locking mechanism.

17A and 17B show an example of light emission display of the display output unit, where FIG. 17A shows a display when an operation switch is operated;
(B) and (C) are figures which show the display of warning display mode, respectively.

FIG. 18 is a view showing a conventional distribution board.

[Explanation of symbols]

 10 Distribution board 20 Main unit 50 Lid 25 Main breaker 32 Branch breaker 40 Signal processing unit 52,66 Operation window unit 62 Display output unit 63,64 Linear light emitting unit 65 Light emitting lamp 67 Locking mechanism

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-165320 (JP, A) JP-A-57-119617 (JP, A) JP-A-59-172911 (JP, A) 13866 (JP, A) JP-A-3-245732 (JP, A) JP-A-8-32254 (JP, A) JP-A-57-183008 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02B 1/40-1/44

Claims (4)

(57) [Claims] 1. A main circuit breaker, a plurality of branch breakers provided corresponding to branch circuits, and signal processing means for detecting a current value flowing through the breakers and performing arithmetic processing and outputting power used by the branch circuits. And a plurality of linear light-emitting portions corresponding to branch breakers in which a plurality of light-emitting elements are arranged in a row, and receives the output of the signal processing means to separately display the power usage of each branch circuit. A power distribution panel comprising a cover having a display output means for performing the operation and an openable / closable operation window for operating a breaker corresponding to each breaker. 2. The display device according to claim 1, wherein an operation switch electrically connected to the signal processing means is provided on the cover surface so that a light emitting display operation of the display output means can be controlled from outside the distribution board. Distribution board. 3. A non-contact operation switch for sensing infrared rays and outputting a signal and a detection switch for detecting that the operation window is open are provided in an operation window for operating the main breaker. 3. The distribution board according to claim 2, wherein the operation switch is controlled to a non-operating state when the operation window is opened. 4. An engaging recess formed at one end for engaging with an engaging portion provided on the main body, the other end of which is rotatably supported by a lid, and which is elastic. A lock body urged outwardly from the lid and a handle plate formed to be pressable are provided at one end, and are provided on the peripheral surface of the lid so as to be able to advance and retreat inside and outside the lid, and a spring. And a grip body which is urged outward by a resilient body such that the lock body comes into contact with the grip body when the grip body is pushed into the lid body. The distribution board according to any one of claims 1 to 3, wherein a locking mechanism configured by arranging the two bodies so as to be rotated is provided on the lid.