JP2020187679A - Dc power supply device and electric apparatus - Google Patents

Abstract

To prevent fault of an information apparatus caused by erroneously connecting the information apparatus to a power supply that does not support PoE by using a communication cable.SOLUTION: A DC power supply device 1 includes: a power supply acquisition unit 2 that secures direct current; a power output terminal 3 consisting of an RJ45 type connector with eight pins; and a transmission line 4 having a positive pole line 4A and a negative pole line 4B for transmitting direct current acquired by the power supply acquisition unit 2 to the power output terminal 3. Among the positive pole line 4A and the negative pole line 4B of the transmission line 4, one is integrally connected to pins 1, 2, 3, and 6 of the power output terminal 3, and the other is integrally connected to pins 4, 5, 7, and 8 of the power output terminal 3. The power output terminal 3 sets one of the set of pins 1, 2, 3, and 6 and the set of pins 4, 5, 7, and 8 to a positive pole and the other to a negative pole.SELECTED DRAWING: Figure 1

Description

The present invention relates to a DC power supply device and an electric device.

RJ45 series connectors such as RJ45 or RJ47 are widely used as communication connectors in Ethernet (registered trademark) such as LAN. As an example, the RJ45 connector is generally described by being composed of a female connector and a male connector plug, and the connector is connected to the device side and the connector plug is connected to the cable side to form a so-called LAN cable. The LAN cable is a communication cable in which the connector plugs are connected to both ends of an 8-core 4-pair twisted pair cable (hereinafter abbreviated as UTP cable). Information devices are connected to each other by inserting the connector plug of the LAN cable into the connectors provided in the information devices such as these computers, Web cameras, switching hubs, wireless LAN access points, and IP phones, and the signals between the two are connected. You can send and receive.

The RJ45 series connector plug has terminals 1 to 8, and each terminal is connected to each of the eight core wires in the UTP cable. Then, in transmitting and receiving signals between the information devices, signals for transmission and reception according to the standard are defined in each terminal. That is, the transmission and reception of communication signals between information devices is substantially standardized by a standard, and an electric signal determined by the standard is energized at each terminal of the connector plug.

By the way, in recent years, so-called PoE (Power over Ethernet) that supplies a direct current to a communication signal using the LAN cable has become widespread. In PoE, electric power for realizing the function of the connected information device is supplied from a power source by using a LAN cable. The specifications for PoE for transmission are defined by standards such as IEEE802.3af and at.

PoE supplies power from the power supply side device (PSE) to the power reception side device (PD) of the transmission destination, and is currently an alternative A (A method) and UTP cable in which the data line and the power supply line are shared. In the above 10BASE-T / 100BASE-TX, there is an "alternative B (B method)" method that uses four pins that are not used for communication of electric signals. In the A method, pins 1, 2, 3, and 6 are used, and in the B method, pins 4, 5, 7, and 8 are used for power supply. Here, taking method A as an example, one of the paired pins 1 and 2 has a positive electrode and the other has a negative electrode, and pins 3 and 6 also have one as a positive electrode and the other as a negative electrode for power supply. DC current is passed between the positive electrode and the negative electrode. Further, the signal data for information communication flowing between the 1st and 2nd pins and the 3rd and 6th pins is superimposed on the power supply.

PoE is basically a specification that can be used only between PSE devices and PD devices that support PoE. This is because in the A method, power is supplied to non-compatible devices by superimposing it on an electric signal, and in the B method, an overcurrent flows through the dummy pins 4, 5, 7, and 8, so that the computer and the computer This is to prevent the circuit board in the information device on the power receiving side such as a switching hub from being damaged.

As an example of measures for preventing the supply of overcurrent in PoE, Patent Document 1 (Japanese Unexamined Patent Publication No. 2006-155372) and the like are described. In Patent Document 1, a circuit for PoE discrimination is provided in a compatible device, and before power is supplied between the power supply side and the power receiving side, it is confirmed whether the devices connected to each other support PoE. Start power supply.

Japanese Unexamined Patent Publication No. 2006-155372

However, in the future, with the development of technology, it is certain that the amount of power that PoE can supply to electrical equipment will increase. The increase in the amount of power supplied by PoE uses the power supply side device (PSE) as a power source for not only information devices that operate at relatively low power as power receiving side devices (PD) but also electrical devices that require large power consumption. It leads to the desire to do it. In this case, an RJ45 connector is adopted as a connector for receiving power in the electric device, and there is a high possibility that a LAN cable is used for connecting the power supply device and the electric device.

In addition, with the development of electric devices such as LED lighting that can realize the functions of the devices themselves with low power consumption, the RJ45 connector has been adopted as a connector for receiving power, and the power receiving side device (PD) is used as a power source for the LAN cable. It is expected that the possibility of demanding an electric device that can operate by connecting via a connector will increase.

Furthermore, although many information devices such as computers and electric devices such as lighting operate on direct current, they are powered by an alternating current power source such as a household power source, so each device is equipped with an alternating current / direct current converter. This electrical conversion loss is large and may become a big energy problem in the future. In addition, even now, with the development of LEDs for lighting and the like, there is a high possibility that the function as an electric device can be sufficiently realized by directly transmitting direct current. If power can be supplied by direct current, it is not necessary to use a converter for each of the above electric devices, and the efficiency of power transmission to the devices up to the power source is also improved.

However, when connecting a DC current device to an information device using a communication cable such as a LAN cable as a power supply cable, misuse occurs in connecting the LAN cable as the power supply cable to the signal transmission / reception port of the information device. there is a possibility. That is, when the communication cable is used as a power supply line, there is a possibility that a power supply that does not support PoE is erroneously connected to the signal transmission / reception port of the information device that transmits / receives signals.

This erroneous connection may cause a problem because an overcurrent is applied to the circuit board of the information device, which not only causes a failure of the information device but also may cause a fire or the like.

Therefore, the technical problem to be solved by the present invention is a DC power supply device capable of preventing the above-mentioned problem caused by erroneously connecting an information device to a power supply that does not support PoE by using a communication cable. And to provide electrical equipment used in connection with this DC power supply.

Another technical problem to be solved by the present invention is to provide an electric device that can be used as a widely used LAN cable.

The present invention provides a DC power supply device having the following configuration in order to solve the above technical problems.

According to the first aspect of the present invention, a power supply acquisition unit that secures a direct current and
An output terminal consisting of an RJ45 connector with eight pins,
It has a positive electrode line and a transmission line having a negative electrode line for transmitting the direct current acquired by the power supply acquisition unit to the power output terminal.
Of the positive electrode line and the negative electrode line of the transmission line, one is integrated and connected to pins 1, 2, 3, and 6 of the power output terminal, and the other is 4, 5, 7, and 8 of the power output terminal. Integrate into pin number and connect
The power output terminal is a DC power supply characterized in that one of a set of pins 1, 2, 3, and 6 and a set of pins 4, 5, 7, and 8 has a positive electrode and the other negative electrode. Provide the device.

According to the second aspect of the present invention, in the transmission line, pins 1, 2, 3, and 6 of the power output terminal are positive electrodes, and pins 4, 5, 7, and 8 of the connector are negative electrodes. Provided is a DC power supply device of the embodiment.

According to the third aspect of the present invention, in the transmission line, pins 1, 2, 3, and 6 of the power output terminal are negative electrodes, and pins 4, 5, 7, and 8 of the connector are positive electrodes. Provided is a DC power supply device of the embodiment.

According to the fourth aspect of the present invention, the power supply acquisition unit is a DC power supply device according to any one of the first to third aspects, which has an AC-DC converter that converts an AC power source supplied from the outside into a DC power source. I will provide a.

According to the fifth aspect of the present invention, the power supply acquisition unit is a DC power supply device according to any one of the first to third aspects, which is a terminal composed of positive and negative electrodes that can be connected to a DC power supply supplied from the outside. provide.

According to the sixth aspect of the present invention, the power supply acquisition unit provides a DC power supply device according to any one of the first to third aspects, which is a battery.

According to the seventh aspect of the present invention, the DC power supply device according to any one of the first to sixth aspects in which the power output terminals are provided in plurality is provided.

According to the eighth aspect of the present invention, it is used by being connected to any one of the first to seventh aspects of the DC power supply device via a cable, and the DC current supplied from the DC power supply device is used as an electric device. Provided is an electric device having a function executing unit that executes a function.

According to the ninth aspect of the present invention, it is an electric device used by connecting to a DC power supply device via a LAN cable.
An incoming call terminal consisting of an RJ45 type connector with 8 pins,
A function execution unit that executes a function as an electric device by a direct current received by the power input terminal.
It has a device connection line composed of a positive electrode line and a negative electrode line that connect the function executing unit and the incoming call terminal.
Of the set of pins 1, 2, 3, and 6 of the RJ45 system connector and the set of pins 4, 5, 7, and 8, one of the power input terminals is a positive electrode and the other is a negative electrode.
Of the positive electrode line and the negative electrode line, one of the device connection lines is integrated with pins 1, 2, 3, and 6 of the incoming terminal, and the other is connected to the incoming terminal 4.5. Provide electrical equipment that integrates and connects to pins 7 and 8.

According to the tenth aspect of the present invention, the eighth or eighth aspect further includes a communication connection unit composed of a connector different from the power input terminal, which can be connected to another information device and can operate the function execution unit. Nine aspects of electrical equipment are provided.

According to the eleventh aspect of the present invention, the function executing unit provides the electric device of the tenth aspect that can be operated by another information device connected to the communication connection unit.

According to the twelfth aspect of the present invention, the function executing unit provides the electric device of the tenth aspect that can be operated by the wireless controller which is the other information device.

In this specification, each term is defined as follows.

The "electrical device" means a device that exerts the original function of the electric device by operating with an electric current from the power supply device. Examples of electric devices include so-called lighting devices, household electric devices such as refrigerators and televisions, and industrial electric devices such as motors. The electric device may include a device having a function as an information device (for example, a home appliance connected to the Internet), and corresponds to a superordinate concept of the information device.

An "information device" is a device capable of communicating electronic information with each other by transmitting and receiving signals in accordance with a standard. Examples of information devices include computers, switching hubs, printers, access point devices, and the like that are connected to each other by a so-called Ethernet (registered trademark).

The "LAN cable" has a configuration in which RJ45 connector plugs are connected to both ends of an 8-core 4-pair UTP cable, and its main purpose is to connect information devices and use them for information communication between information devices. Refers to the cable. Further, there are a plurality of categories of LAN cables, and there are straight cables and cross cables for each, but in the present invention, all categories and both cross cables and straight cables are included. It also includes those that will be revised in the future due to the development of standards.

The "RJ45 series connector" includes the RJ45 connector and the RJ47 connector which have pins 1 to 8 and are used as the current standard, as well as a connector as an advanced version thereof.

According to the above configuration, in the signal communication performed between the information devices according to the communication standard of the information device, the voltage supplied to the paired pins can be made the same. Therefore, the positive and negative poles of the circuit board of the information device are equipotential. As a result, even if an information device that does not support PoE is erroneously connected, an overcurrent does not flow through the circuit board of the information device. Therefore, according to the DC power supply device according to the present invention, it is possible to prevent problems such as failure of the information device that is erroneously connected.

Further, according to the electric device of the present invention, one of the pins of the RJ45 series connector, the set of pins 1, 2, 3, 6 and the set of pins 4, 5, 7, and 8 is used as the positive electrode, and the other. By using the negative electrode, a LAN cable widely used for information communication can be used as a power supply cable.

It is a figure which shows the schematic structure of the DC power supply device as one Embodiment of this invention. It is a schematic diagram which shows the structure of the RJ45 connector as a power output terminal of the DC power supply device of FIG. It is a figure which shows typically the structure of the RJ45 connector plug. It is the schematic which shows the other structural example of the DC power supply device of FIG. It is a figure which shows the schematic structure of the electric device as the 2nd Embodiment of this invention. It is a schematic diagram which shows the state which the DC power supply device of FIG. 1 and the electric device of FIG. 5 are connected by using a LAN cable, and power is supplied from the DC power supply device to the electric device. It is a table summarizing the functions assigned to each pin of the RJ45 connector of 10BASE-T / 100BASE-TX. It is a table which summarizes the function assigned to each pin of the RJ45 connector of 1000BASE-T / 1000BASE-TX. It is a figure which shows the structure of the DC power supply device which concerns on Example 1 of this invention. It is a partially enlarged view of the DC power supply device which concerns on Example 2 of this invention. It is a partially enlarged view of the DC power supply device which concerns on Example 3 of this invention. It is a figure which shows typically the structure of the lighting apparatus as Example 4 of the electric apparatus of this invention. It is a figure which shows typically the structure of the PC as Example 5 of the electric apparatus of this invention.

Hereinafter, the DC power supply device according to each embodiment of the present invention will be described with reference to the drawings.

(DC power supply)
FIG. 1 is a diagram showing a schematic configuration of a DC power supply device according to a first embodiment of the present invention. The DC power supply device 1 according to the present embodiment includes a power supply acquisition unit 2, a power output terminal 3, and a power transmission line 4 that connects the power supply acquisition unit 2 and the output terminal 3.

The DC power supply device 1 according to the present embodiment has a positive electrode and a negative electrode, and can output a DC power supply. The DC power supply device 1 is used as a power source for operating an electric device by the output DC current.

The power supply acquisition unit 2 secures the power supply output from the DC power supply device according to the present embodiment. Examples of the power supply acquisition unit 2 include various batteries, a converter capable of converting an AC power supply supplied from the outside of the DC power supply device 1 according to the present embodiment into a DC power supply, and a DC power supply according to the present embodiment, as described later. Examples thereof include terminals that can be connected to a DC power supply supplied from the outside of the device 1.

The power output terminal 3 is composed of an RJ45 system connector having eight pins. Examples of RJ45 series connectors include RJ47 connectors as well as RJ45 connectors. The RJ45 connector is substantially standardized by the standard, and includes the one corresponding to the revision of the standard. Hereinafter, an RJ45 connector as an example of an RJ45 series connector will be described as an example.

FIG. 2 is a schematic view showing a configuration of an RJ45 connector 10 as a power output terminal 3 of the DC power supply device 1 shown in FIG.

As described above, the DC power supply device 1 according to the present embodiment has an RJ45 connector 10 as an example of a power output terminal. The RJ45 connector 10 has 4 sets of 8 pins from the 1st pin 11 to the 8th pin 18. The pins are arranged in parallel to each other in the insertion port 19. The insertion port 19 is an opening for inserting the RJ45 connector plug 20 shown in FIG.

The RJ45 connector plug 20 shown in FIG. 3 is a plug that is used by being connected to the end of four sets of 8-core UTP cables and constitutes a so-called LAN cable. The configuration of the UTP cable used for the LAN cable is not particularly limited except that the configuration is 8 cores and 4 sets.

The RJ45 connector plug 20 is provided with eight terminals 21 (terminals 1 to 8) corresponding to pins 1 to 8 of the RJ45 connector 10 on the main body 22 connected to both ends of the UTP cable. Has been done. When the main body 22 of the RJ45 connector plug 20 is inserted into the insertion port 19 of the RJ45 connector, the pins 1 to 8 18 in the connector plug 20 and the terminal 21 corresponding to the connector plug 20 are electrically connected, respectively. The RJ45 connector 10 and the RJ45 connector plug 20 are connected to each other so that electricity can be supplied between them.

The transmission line 4 connects between the power supply acquisition unit 2 and the power output terminal 3, and supplies the direct current output from the power supply acquisition unit 2 to the power output terminal 3. The transmission line 4 is composed of a positive electrode line 4A and a negative electrode line 4B. The material and characteristics of the transmission line are not particularly limited as long as they can energize between the power supply acquisition unit 2 and the power output terminal 3. However, as will be described later, since a plurality of pins of the power output terminals are integrated to form a positive electrode or a negative electrode, the power output terminal 3 side ends of the positive electrode wire 4A and the negative electrode line 4B correspond to the power output terminal 3. It is branched.

In the present embodiment, one of the positive electrode line 4A and the negative electrode line 4B is integrated and connected to pins 1, 2, 3, and 6 of the RJ45 connector 10, and the other is connected to the RJ45 connector 10 4. It is integrated and connected to pins 5, 7, and 8.

It does not matter whether the set of pins 1, 2, 3, 6 and the set of pins 4, 5, 7, and 8 of the RJ45 connector 10 are connected to the positive electrode line 4A or the negative electrode line 4B of the transmission line 4. .. That is, when a set consisting of pins 1, 2, 3, and 6 of the RJ45 connector 10 (hereinafter referred to as the first set) is used as the positive electrode, the positive electrode wire 4A is connected to the first set, and the connector 4 When a set consisting of pins 5, 7, and 8 (hereinafter referred to as a second set) is used as the positive electrode, the positive electrode wire 4A is connected to the second set.

Either the first set or the second set may be used as the positive electrode. As will be described later, the 10BASE-T and 100BASE-TX, which use only four of the eight cores for information communication, can correspond to any of the above-mentioned PoE A method and B method.

In FIG. 2, the first group and the positive electrode line 4A are connected, and the negative electrode line 4B is connected to the second group. As shown in FIG. 4, the first group and the negative electrode line 4B, and the second group and the positive electrode line 4A are connected. May be connected.

(Electrical equipment)
FIG. 5 is a diagram showing a schematic configuration of an electric device as a second embodiment of the present invention. The electric device 5 according to the present embodiment is composed of a power input terminal 6, a function execution unit 7, and a device connection line 8 for connecting the power input terminal 6 and the function execution unit 7.

In the present embodiment, the power input terminal 6 has the same configuration as the RJ45 connector 10 which is the power output terminal 3 used in the DC power supply device 1 according to the first embodiment. That is, as will be described later, in the present embodiment, since the DC power supply device 1 and the electric device 5 are connected by using a LAN cable, the power input terminal 6 of the electric device has the same configuration as the RJ45 connector 10 of the DC power supply device 1. Is.

The function execution unit 7 executes a function as an electric device by using the direct current from the direct current power supply device 1 supplied via the power input terminal 6. The functions that can be executed by the function executing unit 7 are not particularly limited, and the specific members that can execute the functions are not particularly limited. For example, for light emitting devices used for LED lighting, light receiving devices used for CCDs, motors used for various home appliances, heating wires used for electric heaters, electromagnetic generators used for microwave ovens, speakers, etc. Includes electromagnets used and the combinations described above.

The electric device 5 according to the present embodiment is supplied with a direct current from the direct current power supply device 1 according to the first embodiment via a LAN cable, and executes the function of the device itself by the direct current. As a result, it is not necessary to mount an AC / DC converter for each electric device 5, and there is no power loss that occurs during conversion.

The device connection line 8 connects between the power input terminal 6 and the function execution unit 7, and supplies the direct current supplied from the power input terminal 6 to the function execution unit 7. The device connection line 8 is composed of a positive electrode line 8A and a negative electrode line 8B. The material and characteristics of the device connection line 8 are not particularly limited as long as the power input terminal 6 and the function execution unit 7 can be energized. However, as will be described later, since a plurality of pins of the incoming terminal 6 are integrated to form a positive electrode or a negative electrode, the ends of the positive electrode wire 8A and the negative electrode wire 8B on the incoming terminal 6 side are branched corresponding to the incoming terminal 6. Has been done.

In the present embodiment, one of the positive electrode wire 8A and the negative electrode wire 8B of the device connection line 8 is integrated and connected to pins 1, 2, 3, and 6 of the incoming call terminal 6 (RJ45 connector), and the other is connected to the RJ45. It is integrated and connected to pins 4, 5, 7, and 8 of the connector 10.

The set of pins 1, 2, 3, 6 and the set of pins 4, 5, 7, and 8 of the power input terminal 6 (RJ45 connector) are connected to either the positive electrode line 4A or the negative electrode line 4B of the transmission line 4. It doesn't matter. Which set is used as the positive electrode depends on the configuration of the function execution unit 7.

(Connection between DC current device and electrical equipment)
FIG. 6 is a schematic diagram showing a state in which the DC power supply device according to the first embodiment and the electric device according to the second embodiment are connected by using a LAN cable 25 and power is supplied from the DC power supply device 1 to the electric device 5. is there. As shown in FIG. 6, in FIG. 6, the electric power for realizing the function of the electric device 5 is supplied from the DC power supply device 1 via the LAN cable 25.

As described above, the LAN cable 25 has a configuration in which the RJ45 connector plugs 20 are connected to both ends of the 8-core 4-set UTP cable 26. In the straight cable, each pin of the connector plugs at both ends is connected regardless of the cable category. Correspond to each. On the other hand, in the cross cable, the 1st terminal of one connector plug and the 3rd terminal of the other connector plug are connected, and the 2nd terminal of one connector plug and the 6th terminal of the other connector plug are connected.

As described above, in the DC power supply device 1 and the electric device 5 according to the present embodiment, the RJ45 connector is used as the power output terminal 3 and the power input terminal 6, respectively, and the LAN cable 25 is used for power supply between them. Then, in the power output terminal 3 and the power input terminal 6, the set of pins 1, 2, 3, 6 and the set of pins 4, 5, 7, and 8 are integrated to form a positive electrode or a negative electrode, respectively. The potentials of the pins included in each set (first set and second set) are all equal. Therefore, no potential difference is generated between the pins constituting each set, and no current flows.

That is, according to the DC power supply device 1 according to the present embodiment, in the RJ45 connector used for signal transmission between substantially standardized information devices, no current flows between the paired pins, and the present embodiment Even if the DC power supply device 1 is erroneously connected to the connector for communication of the information device, the information device is not supplied with an overcurrent to the circuit board for signal communication.

The operation and effect of the DC power supply device according to the present embodiment will be described in more detail. FIG. 7 is a table summarizing the functions assigned to each pin of the RJ45 connector of 10BASE-T / 100BASE-TX. FIG. 8 is a table summarizing the functions assigned to each pin of the 1000BASE-T / 1000BASE-TX RJ45 connector.

As shown in FIG. 7, in 10BASE-T and 100BASE-TX, only pins 1, 2, 3, and 6 are used for information communication, and pins 4, 5, 6, and 7 are dummy (unused). .. Then, among the pins 1, 2, 3 and 6 used for information communication, the 1st pin and the 2nd pin are paired, and the 3rd pin and the 6th pin are paired. Each pair is used for transmitting or receiving an information communication signal, and the circuit board of the information device recognizes the potential difference generated between the pins constituting each pair as signal information.

According to the DC power supply device 1 according to the present embodiment, as described above, a potential difference occurs between the pins constituting the 1, 2, 3, 6 pin set and the 4, 5, 7, 8 pin set. Therefore, no overcurrent flows through the circuit board of the information device. Therefore, even if the information device is erroneously connected to the DC power supply device according to the present embodiment by using the LAN cable 25, it is possible to prevent the circuit board of the information device from failing or catching fire.

In 1000BASE-T and 1000BASE-TX, as shown in FIG. 8, eight terminals connected to all the core wires of four sets of eight cores of the UTP cable are used for information communication. Further, the devices conforming to the 1000BASE-T standard have a structure capable of transmitting and receiving to each other, and dynamically change to be a transmitter or a receiver.

Then, as shown in FIG. 8, like the 10BASE-T and 100BASE-TX, the 1st pin and the 2nd pin are paired, and the 3rd pin and the 6th pin are paired. As for the 4, 5, 6 and 7 pins, the 4th pin and the 5th pin are paired, and the 7th pin and the 8th pin are paired. As described above, the category 5 or higher cross cables that can be used in 1000BASE-T have a connection method of A connection and B connection, but the combination of pins forming the pair is common.

As described above, each pair is used while being switched between transmission and reception of information communication signals, and the circuit board of the information device recognizes the potential difference generated between the pins constituting each pair as signal information. ..

Therefore, according to the DC power supply device 1 according to the present embodiment, as described above, the potential difference between the pins forming the set of pins 1, 2, 3, and 6 and the set of pins 4, 5, 7, and 8. Does not occur, so that an overcurrent does not flow through the circuit board of the information device. Therefore, even if the information device is erroneously connected to the DC power supply device according to the present embodiment by using the LAN cable 25, it is possible to prevent the circuit board of the information device from failing or catching fire.

FIG. 9 is a diagram showing a configuration of a DC power supply device according to a first embodiment of the present invention. As shown in FIG. 9, the DC power supply device 30 of this embodiment has a plurality of RJ45 connectors 10 and an AC / DC converter 31. The AC / DC converter 31 is connected to the RJ45 connector 10 via a transmission line 4 composed of a positive electrode line 4A and a negative electrode line 4B. As for the combination of the connection between each pin of the RJ45 connector 10 and the positive electrode wire 4A and the negative electrode wire 4B, the pins 1, 2, 3, 6 and 4, 5, 7, and 8 are as described in the first embodiment. As a set, they are connected to the positive electrode line 4A and the negative electrode line 4B of the transmission line 4.

In the DC power supply device 30 of this embodiment, AC power is supplied from a household power source, an industrial power source, or the like via a power supply line 32, and a DC current having a predetermined voltage is secured by the AC / DC converter 31. To. That is, the AC / DC converter 31 corresponds to the power supply acquisition unit 2.

The direct current secured by the AC / DC converter 31 is supplied to the plurality of RJ45 connectors 10 and output from the plurality of RJ45 connectors 10 to the outside. As described above, the direct current output from the RJ45 connector to the outside has no potential difference between the pins constituting the 1, 2, 3, 6 pin set and the 4, 5, 7, 8 pin set. , It is possible to prevent an overcurrent from flowing through the circuit board of an information device.

FIG. 10 is a partially enlarged view of the DC power supply device according to the second embodiment of the present invention. The DC power supply device 33 according to this embodiment uses a battery 34 as an example of the power supply acquisition unit 2. In this embodiment, the battery 34 is housed in a battery case 35 provided in the DC power supply device. The characteristics such as the type, size, and capacity of the battery 34 are not particularly limited, and any battery that can be used as a DC power source can be used as long as it can execute the function of the electric device.

One end side of the transmission line 4 including the positive electrode line 4A and the negative electrode line 4B is connected to the battery case 35, and the other end side is connected to the RJ45 connector 10. The connection between the other end side of the positive electrode wire 4A and the negative electrode wire 4B and each pin of the RJ45 connector is the same as in the first embodiment.

In the DC power supply device 36 according to this embodiment, a coaxial terminal 37 connected to a DC power supply supplied from the outside is used as an example of the power supply acquisition unit 2. However, in this embodiment, the coaxial terminal is used as the terminal 37, but the present invention is not limited to this. That is, coaxial cables having other configurations having a positive electrode and a negative electrode can also be used.

FIG. 11 is a partially enlarged view of the DC power supply device according to the third embodiment of the present invention. The DC power supply device 33 according to this embodiment uses a coaxial terminal 37 as an example of the power supply acquisition unit 2.

The coaxial terminal 37 secures the DC current supplied from the power supply line 38 by inserting the plug 39 provided at the tip of the power supply line 38 of the DC power supply.

One end side of the transmission line 4 including the positive electrode line 4A and the negative electrode line 4B is connected to the coaxial terminal 37, and the other end side is connected to the RJ45 connector 10. The connection between the other end side of the positive electrode wire 4A and the negative electrode wire 4B and each pin of the RJ45 connector is the same as in the first embodiment.

FIG. 12 is a diagram schematically showing a configuration of a lighting device as an embodiment of the electric device of the present invention. The lighting device 40 is attached to the ceiling of the house as an example, and illuminates the interior of the house by emitting light.

The lighting device 40 has an RJ45 connector 10, an LED light emitting unit 42, a control unit 43, and a signal receiving unit 44 inside the housing 41. The RJ45 connector 10 is an example of the incoming call terminal 6, and is connected to the control unit 43 by the device connection line 8. The device connection line 8 includes a positive electrode line 8A and a negative electrode line 8B, and one end of the eight pins included in the RJ45 connector 10 is 1, 2, 3, 6 of the incoming call terminal 6 (RJ45 connector). It is integrated and connected to the pin No. 4, and the other is integrated and connected to the pins 4, 5, 7, and 8 of the RJ45 connector 10. The other end of the device connection line 8 is connected to the control unit 43.

The LED issuing unit 42 emits light when a direct current flows, and executes the function as the lighting device 40. The control unit 43 controls the direct current supplied to the LED light emitting unit 42, turns on / off the LED light emitting unit, adjusts the brightness, and the like.

The lighting device 40 according to the present embodiment can be operated wirelessly by the wireless controller 45. An information signal regarding the operation of the lighting device is transmitted from the wireless controller 45, and the signal receiving unit 44 receives this information signal. The signal receiving unit 44, which has received the information signal from the wireless controller 45, sends the information signal to the control unit 43 to operate the control unit 43.

FIG. 13 is a diagram schematically showing a configuration of a personal computer (PC) as an embodiment of the electric device of the present invention. The PC 50 is, for example, a desktop personal computer, and is used by connecting to a monitor 51, a keyboard, a mouse 52, or the like having a different configuration. Further, the PC 50 has a first RJ45 connector 10A as a communication connector for connecting to the Internet and a second RJ45 connector 10B as a power supply connector.

A LAN cable 25A is connected to the first RJ45 connector 10A, and transmission / reception to / from an external terminal of the device such as a switching hub is possible.

The second RJ45 connector 10B functions as a power supply connector for operating the PC 50. The second RJ45 connector 10B is an example of the incoming call terminal 6. A power supply 60 is connected to the second RJ45 connector 10B via a LAN cable 25B used as a power supply line for the PC 50 of this embodiment. The configuration of the power supply 60 is not particularly limited as long as it is a power supply capable of outputting direct current. For example, a household power source or the like may be converted into direct current for use.

The PC 50 has a control calculation unit 54 that executes a function as a PC inside the housing 53. The control calculation unit 54 receives information signals from the network, keyboard, mouse 52, and the like, performs calculations according to the purpose using the information signals, and transmits the calculation results.

The first RJ45 connector 10A and the control calculation unit 54 are connected via a signal line 55. The signal line 55 that connects the first RJ45 connector 10A and the control calculation unit 54 is connected according to a convention.

The second RJ45 connector 10B is connected to the control calculation unit 54 via the device connection line 8. The device connection line 8 includes a positive electrode line 8A and a negative electrode line 8B, one of which is integrated and connected to pins 1, 2, 3, and 6 of the second RJ45 connector 10B, and the other is a second RJ45 connector 10B. It is integrated and connected to the 4th, 5th, 7th, and 8th pins of. The other end of the device connection line 8 is connected to the control calculation unit 54.

In this embodiment, the two LAN cables 25A and 25B connected to the first and second RJ45 connectors 10A and 10B, respectively, have RJ45 connector plugs 20 at both ends. According to the PC according to this embodiment, a LAN cable that is generally widely used can be used as a power supply line for executing the function of the main body.

In the present embodiment, the PC 50 includes the first and second RJ45 connectors 10A and 10B, but may be configured to operate by the power supply supplied by PoE. In that case, only one RJ45 connector is required.

As described above, according to the DC power supply device of the present invention, it is possible to eliminate the potential difference applied between the pins paired with each other among the eight pins included in the RJ45 system connector. Therefore, an overcurrent does not flow through the circuit board of the information device erroneously connected to the DC current device, and the erroneously connected information device is not damaged.

The present invention is not limited to the above embodiment, and can be implemented in various other aspects.

For example, the power input terminal of the electric device 5 may have any configuration as long as it can receive the DC power output from the DC power supply device.

That is, as described above, in the present embodiment, the DC power supply device and the electric device are connected by using RJ45 connector plugs at both ends of the 8-core 4-set UTP cable, but the power input terminal on the electric device side is not necessarily RJ45. It is not necessary to use a system connector plug. For example, the shape may be such that a DC power supply output from a DC power supply device such as a coaxial terminal can be input. However, it is unlikely that a cable in which connector plugs having different shapes are connected at both ends of the UTP cable is used.

Further, the power input terminal 6 is connected to an RJ45 system connector plug connected to both ends of the LAN cable, and the power input terminal 6 of the electric device 5 has a shape corresponding to a connector as a separate member corresponding to the shape. You can also.

The positive electrode wire 4A and the negative electrode wire 4B do not have to be one conductive wire each. The positive electrode wire 4A and the negative electrode wire 4B composed of a set of a plurality of conductive wires are used for the positive electrode and the negative electrode of the power supply acquisition unit 2, and the positive electrode wire 4A and the negative electrode wire 4B composed of the respective sets are used as a pin set of an RJ45 connector. You may connect.

The present invention relates to a direct current device, and can be used as a power supply for supplying power to an electric device operating by direct current such as a home appliance or an industrial electric device.

1,33,36 DC power supply 2 Power supply acquisition unit 3 Power output terminal 4 Transmission line 4A Positive wire 4B Negative wire 5 Electrical equipment 6 Power input terminal 7 Function execution unit 8 Equipment connection line 10 RJ45 connector 11 Pin 1 12 Pin 2 13 3rd pin 14 4th pin 15 5th pin 16 6th pin 17 7th pin 18 8th pin 19 Outlet 20 RJ45 Connector plug 21 Terminal 22 Main body 25, 25A, 25B LAN cable 34 Battery 35 Battery case 37 Coaxial terminal 38 Power supply line 39 Plug 40 Lighting device 41, 53 Housing 42 LED light emitting unit 43 Control unit 44 Signal receiving unit 45 Wireless controller 50 Personal computer 51 Monitor 52 Keyboard, mouse 54 Control calculation unit 55 Signal line 60 Power supply

Claims (12)

A power supply acquisition unit that secures DC current,
An output terminal consisting of an RJ45 connector with eight pins,
It has a positive electrode line and a transmission line having a negative electrode line for transmitting the direct current acquired by the power supply acquisition unit to the power output terminal.
Of the positive electrode line and the negative electrode line of the transmission line, one is integrated and connected to pins 1, 2, 3, and 6 of the power output terminal, and the other is 4, 5, 7, and 8 of the power output terminal. Integrate into pin number and connect
The power output terminal is a DC power supply characterized in that one of a set of pins 1, 2, 3, and 6 and a set of pins 4, 5, 7, and 8 has a positive electrode and the other negative electrode. apparatus. The first aspect of the present invention, wherein the transmission line has pins 1, 2, 3, and 6 of the power output terminal as a positive electrode and pins 4, 5, 7, and 8 of the connector as a negative electrode. DC power supply. The first aspect of the present invention, wherein the transmission line has pins 1, 2, 3, and 6 of the power output terminal as a negative electrode and pins 4, 5, 7, and 8 of the connector as a positive electrode. DC power supply. The DC power supply device according to any one of claims 1 to 3, wherein the power supply acquisition unit includes an AC-DC converter that converts an AC power supply supplied from the outside into a DC power supply. The DC power supply device according to any one of claims 1 to 3, wherein the power supply acquisition unit is a terminal composed of positive and negative electrodes that can be connected to a DC power supply supplied from the outside. The DC power supply device according to any one of claims 1 to 3, wherein the power supply acquisition unit is a battery. The DC power supply device according to any one of claims 1 to 6, wherein a plurality of power output terminals are provided. Electricity having a function executing unit, which is used by being connected to any one of claims 1 to 7 via a cable and executes a function as an electric device by a direct current supplied from the direct current. machine. It is an electrical device used by connecting to a DC power supply device via a LAN cable.
An incoming call terminal consisting of an RJ45 type connector with 8 pins,
A function execution unit that executes a function as an electric device by a direct current received by the power input terminal.
It has a device connection line composed of a positive electrode line and a negative electrode line that connect the function executing unit and the incoming call terminal.
Of the set of pins 1, 2, 3, and 6 of the RJ45 system connector and the set of pins 4, 5, 7, and 8, one of the power input terminals is a positive electrode and the other is a negative electrode.
Of the positive electrode line and the negative electrode line, one of the device connection lines is integrated with pins 1, 2, 3, and 6 of the incoming terminal, and the other is connected to the incoming terminal 4.5. An electrical device characterized by being integrated and connected to pins 7 and 8. The eighth or ninth aspect of the present invention, further comprising a communication connection unit composed of a connector different from the power input terminal, which can be connected to another information device and can operate the function execution unit. Electrical equipment. The electrical device according to claim 10, wherein the function executing unit can be operated by another information device connected to the communication connection unit. The electric device according to claim 10, wherein the function executing unit can be operated by a wireless controller which is the other information device.

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