JP2011070945A - Outlet for dc power distribution, luminaire, and dc power distribution system - Google Patents

Abstract

Provided are a DC power distribution outlet capable of easily replacing a DC system device, changing an installation location, and the like, a lighting fixture connectable to the DC power distribution outlet, and a DC power distribution system.
A main body 11 formed of an electrical insulating material; a blade bracket 12 accommodated in the main body and connected to a DC system device; a plug of the DC system device housed in the main body is attached to the blade bracket. A conductor 13 disposed so that the connection between the blade brackets is opened and closed by an electrical insulator 22b provided in the DC system device; And the electric wire connection part 14 for connecting to 31;
[Selection] Figure 1

Description

  The present invention relates to a DC power distribution outlet for connecting a DC system device, a lighting apparatus using a light emitting diode or the like connected to the DC power distribution outlet as a light source, and a DC power distribution system using the DC power distribution outlet.

  Conventionally, for example, power distribution systems for ordinary homes and stores use a distribution board connected to a commercial AC power system to connect multiple outlets in parallel to a two-wire electric circuit at necessary locations such as rooms. The constant voltage distribution system is configured. For this reason, for example, the installation of lighting fixtures using light-emitting diodes driven by direct current as light sources constitutes lighting fixtures with built-in power supply units each consisting of a rectifier circuit and connected to a parallel connected outlet. A commercial AC power source is converted to a direct current to obtain a lighting power source.

  Patent Document 1 discloses a distribution board in which commercial AC power equipment such as a limiter, main circuit breaker, branch breaker and the like are arranged in the main body, and a DC distribution board in which a power conversion unit is arranged in the main body. Power distribution using a general constant voltage system with a basic configuration and supplying a plurality of LED lighting terminals connected to each other in parallel with respect to two power supply lines with DC power from a power conversion unit in this DC distribution board The system is shown.

JP 2008-43001A

  On the other hand, devices of this type that use light-emitting diodes as light sources vary in the rated voltage depending on the number of light-emitting diodes used, etc., and in the constant voltage distribution system currently in general use, A plurality of devices having different rated voltages cannot be connected. For this reason, conventionally, as shown in FIG. 6, the dedicated LED power supply unit 1 is connected to the power supply line that is connected to the two lines of the constant voltage power distribution system wired on the ceiling or the like, A current circuit 2 is constituted by this power supply unit, and a plurality of lighting fixtures 3 each having a light emitting diode as a light source are connected in series to the current circuit.

  However, the construction for installing the power supply unit is complicated and cannot be performed by a general user, and it is not possible to easily change the equipment or change the installation location. In particular, in the case of a current circuit, each device is connected in series to form a closed circuit. For example, when one lighting fixture is removed from the circuit, the closed circuit is opened, Since the power is not supplied to the instrument, it cannot be lit (B portion in FIG. 6). For this reason, the problem that a general user cannot change an instrument or cannot change an installation place arises. For this reason, in DC equipment such as lighting fixtures that use light-emitting diodes as light sources, how to construct a DC power distribution system that allows general users to easily change fixtures and change installation locations, etc. Has become an important issue.

  The present invention has been made in view of the above problems, and is a DC power distribution outlet capable of easily replacing a DC system device, changing an installation location, and the like, a lighting apparatus connectable to the DC power distribution outlet, and A DC distribution system is to be provided.

  The invention of the outlet for direct current distribution according to claim 1 includes: a main body formed of an electrical insulating material; a blade receiving metal fitting accommodated in the main body and connected to the direct current system equipment; A conductor disposed so that the connection between the blade brackets is opened and closed by an electrical insulator provided in the DC system device when the plug is connected to the blade bracket; And a wire connecting portion for connecting the metal fitting to the DC power supply portion. ADVANTAGE OF THE INVENTION According to this invention, the outlet for DC distribution which can perform exchange of a DC system apparatus, a change of an installation place, etc. easily can be comprised.

  In the present invention, the outlet for DC power distribution may be an outlet installed indoors or an outlet installed outdoors, and may be an exposed type or an embedded type, and is not limited to a specific outlet.

  In addition, the DC system device is preferably configured and applied as a lighting fixture using a semiconductor light emitting element such as a light emitting diode as a light source, but other DC system devices, for example, communication devices such as a hub corresponding to a LAN or the like. It may be applied to an information system unit constituting a disaster prevention unit, a disaster prevention unit for connecting a disaster prevention sensor to receive detection information from the sensor and performing signal processing, and a battery charging device used in a general household.

  In addition, the blade bracket that is housed in the main body and is connected to the DC system device is preferably one that sandwiches and connects generally used plug blades on both sides. Only one side may be connected.

  When the plug of the DC system device is accommodated in the body and connected to the blade bracket, the electrical insulator provided in the DC system device is arranged to open and close the connection between the blade brackets. For example, the conductor can be opened and closed by moving in a linear direction by inserting / removing a plug into / from an outlet, or can be opened / closed by moving in a rotating direction by inserting / removing a rotating cap in the hooking ceiling. Also good. In short, when the plug of the DC system device is connected to the blade bracket, all means for opening and closing the connection between the blade brackets by the electrical insulator provided in the DC system device is allowed.

  Install the conductors so that they are always closed by the elastic force of the opposing brackets, insert an electrical insulator between the opposing brackets, and separate the normally closed brackets. It is preferable to open the connection, but it is composed of a movable contact plate and a fixed contact plate, and the movable contact plate that is normally closed is moved by an electrical insulator and released from the fixed contact plate. Good. The conductor may be composed of a movable contact plate and a fixed contact plate built in various switches such as a micro switch.

  In addition, the electrical insulator provided in the DC system device is preferably provided, for example, on a plug connected to the device by a cord so as to protrude in parallel with the plug blade. Similarly to the above, it may be provided in a plug-in type plug part. In addition, the electrical insulator is preferably configured such that the connection between the pair of blade brackets is opened and closed simultaneously with or in conjunction with the operation of plugging / unplugging. It may be configured to be opened and closed by a separate operation or means, not at the same time or in conjunction with.

  In addition, for example, the electrical insulator is preferably formed integrally with a synthetic resin, which is simple and cost-effective. However, in order to increase the strength, the core portion is made of metal and synthesized on the metal surface. It may be configured to cover an electrical insulator such as a resin.

  In addition, it is preferable that the wire connection portion for connecting the blade bracket to the DC power supply portion is a so-called screwless terminal housed in the main body, but the wire is screwed into the blade bracket itself. Even if it connects by a stop, welding, etc., the terminal with a screw | thread provided in a main body outer surface etc. may be sufficient.

  The invention of the lighting device according to claim 2 is an electrical insulator that opens and closes the connection between the blade brackets with respect to the plug blade and the conductor connected to the blade bracket of the outlet for direct current distribution according to claim 1. And a light source composed of a semiconductor light emitting element connected to a DC current circuit through the plug. ADVANTAGE OF THE INVENTION According to this invention, the lighting fixture which uses the semiconductor light-emitting element which can perform replacement | exchange of an fixture, a change of an installation place, etc. as a light source can be comprised.

  In the present invention, as the semiconductor light emitting element, a light emitting element driven by direct current using a light emitting diode, a semiconductor laser, an organic EL, or the like as a light source is allowed. The number of semiconductor light emitting elements is preferably comprised of a plurality, but the required number is selected according to the application of lighting. For example, about four element groups are formed, and one or a plurality of these groups are formed. You may comprise so that it may form a group. Furthermore, it may be composed of one semiconductor light emitting element. The semiconductor light emitting element is preferably configured to emit white light, but may be configured to be red, blue, green, or a combination of various colors depending on the use of the lighting fixture.

  When a plurality of semiconductor light-emitting elements are used, it is preferable that all the semiconductor light-emitting elements are connected in series. However, a predetermined number is connected in series to form an element group, and the semiconductor light-emitting elements are connected in series. It may be configured by connecting element groups in parallel.

  The invention of a DC power distribution system according to claim 3 is a DC power supply unit; a current circuit configured on the output side of the DC power supply unit; and a plurality of DC power distribution units connected in series to the current circuit And an outlet. ADVANTAGE OF THE INVENTION According to this invention, the direct current | flow distribution system which can perform replacement | exchange of direct-current system apparatus, a change of an installation place, etc. can be comprised.

  According to the first aspect of the present invention, when the plug of the DC system device is accommodated in the main body and connected to the blade bracket, the connection between the blade brackets by the electrical insulator provided in the DC system device. By using a conductor arranged so as to be opened and closed, it is possible to provide a DC power distribution outlet capable of easily exchanging DC system equipment, changing the installation location, and the like.

  According to the second aspect of the invention, the DC power distribution outlet according to the first aspect is provided with a plug having an electrical insulator that opens and closes the connection between the blade brackets. It is possible to provide a lighting fixture that uses a semiconductor light emitting element that can be easily changed as a light source.

  According to the invention described in claim 3, by providing the plurality of DC power distribution outlets according to claim 1 connected in series to the current circuit, it is easy to replace the DC system equipment, change the installation location, etc. It is possible to provide a direct current power distribution system that can be performed in the same manner.

BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view which shows the state which installed the outlet socket for DC distribution and the lighting fixture which are 1st Embodiment of this invention in the ceiling surface. Similarly, the outlet for direct current distribution is shown, (a) is a front view of a lid, and (b) is a front view of a case body. The outlet for direct current power distribution is similarly shown, (a) is a perspective view of a terminal board, (b) is a sectional view which meets a line 2 (b) bb. Similarly, a DC power distribution system is shown, (a) is a system circuit diagram showing a state in which a plurality of DC power distribution outlets are installed in the electric circuit, and lighting fixtures are installed in all DC power distribution outlets. (B) is (a) The system circuit diagram which shows the state which removed one lighting fixture from the state of a figure. The modification is similarly shown, (a) is a perspective view showing a DC distribution outlet and a lighting fixture, (b) is a cross-sectional view showing a switch part of the DC distribution outlet. The wiring diagram for connecting the some lighting fixture in the prior art example of this invention to a LED power supply unit.

  Hereinafter, embodiments of a DC power distribution outlet, a lighting fixture, and a DC power distribution system according to the present invention will be described.

  First, the configuration of the DC power distribution outlet will be described. This embodiment constitutes a 100V15A single-port DC power distribution outlet 10 for use in general homes. A main body 11, a pair of blade brackets 12 housed in the main body and connected to a DC system device, Conductor 13 accommodated in the body and disposed oppositely so as to open and close the connection between the pair of blade brackets 12 by means of an electrical insulator provided in the DC system device. The blade bracket 12 is constituted by a pair of electric wire connecting portions 14 for connecting to the DC power source portion.

  As shown in FIG. 2, the main body 11 includes a case body 11a integrally formed of a synthetic resin having electrical insulation, and a lid body 11b for closing the opening of the case body. The case body 11a includes a pair of blade receiving brackets 12 to be described later, a conductor 13 disposed opposite to each other, and a blade receiving bracket accommodating portion 11a1 for accommodating a pair of electric wire connecting portions 14, and a conductor accommodating portion. 11a2 and the wire connection accommodating part 11a3 are integrally formed.

  Similarly to the main body, the lid body 11b is integrally formed of a synthetic resin having electrical insulation, and a pair of plug blades for inserting plug blades facing the pair of blade receiving brackets 12 accommodated in the case body 11a. An insertion hole 11b1 is formed, and further, one insertion hole 11b2 for inserting an electrical insulator is formed opposite to the conductors 13 arranged to face each other. The case body 11a and the lid body 11b are fixed so that the opening of the case body 11a is closed by the lid body 11b with a detachable screw 11c. In the figure, reference numeral 11d denotes a mounting hole for supporting the main body 11 on the ceiling surface or the like with wood screws.

  As shown in FIG. 3A, the blade holder 12 to which the plug blade of the plug is connected is made of a conductive metal, for example, a copper plate containing tin (Sn). The blade receiving portions 12a and 12b that are always in contact with each other so as to form a "" shape are formed in pairs. One receiving fitting 13a of the conductor 13 is integrally formed by extending integrally from one end side of the bottom of the pair of blade receiving portions 12a. Similarly, the other receiving bracket 13b is integrally formed by extending integrally from the bottom of the other blade receiving portion 12b.

  In the present embodiment, the wire connection portion 14 to which the power line W is connected is configured as a so-called screwless terminal, and the other end portion side of one blade receiving portion 12a of the blade receiving bracket 12 is integrally extended. Thus, one electric wire support portion 14a having a “U” shape is formed. Similarly, the other end side of the other blade receiving portion 12b is integrally extended to form the other electric wire support portion 14b having a “U” shape. In addition, 14c in FIG.3 (b) is a leaf | plate spring for pressing and latching the power wire W with respect to the support parts 14a and 14b of an electric wire connection part.

  As shown in FIG. 3A, the terminal plate including the blade receiving portion 12a (12b), the one receiving metal fitting 13a (13b), and the one electric wire supporting portion 14a (14b) formed integrally is formed as described above. In addition, a pair is prepared, and is inserted into and supported by each accommodating portion of the case body 11a. Thereby, one receiving metal 13a and the other receiving metal 13b of the conductor 13 are arranged to face each other and are always in contact with each other. In this state, the DC power distribution outlet 10 is configured by covering the lid 11b over the opening of the case body 11a and closing it.

  In addition, in order to cancel the connection between the pair of wire insertion holes 11a4 for inserting the power supply wire W into the screwless terminal of the wire connecting portion 14 and the screwless terminal and the wire on the back surface of the case body 11a, and to remove the wire The release button (not shown) is provided. In addition, the pair of blade brackets 12, the pair of electric wire connecting portions 14, the pair of insertion holes 11b1, the pair of electric wire insertion holes 11a4, and the like described above may be configured not only as a pair but also as a grounded one. Further, the distance between the blade receiving portions 12a and 12b of the blade receiving bracket and the distance between the pair of insertion holes 11b1 of the lid 11b are different from the distance between the blade receiving bracket and the insertion hole in the existing AC 100V outlet. It is comprised so that the plug for the existing alternating current 100V may not be inserted.

  According to the DC power distribution outlet 10 having the above configuration, the conductor 13 is always in contact, and therefore, as shown by the dotted arrow in FIG. 4 (b), one electric wire support portion 14a → one blade receiving portion 12a → An electric path A is formed from one metal fitting 13 a of the conductor 13 → the other metal fitting 13 b → the other blade receiving portion 12 b → the other electric wire support portion 14 b. Further, as shown in FIG. 4A, by inserting an electrical insulator 22b into the conductor 13 configured to be in constant contact, the gap between one receiving metal 13a and the other receiving metal 13b. An electric insulator 22b is interposed between the electric path A, that is, between the one blade receiving portion 12a and the other blade receiving portion 12b, and direct current is supplied to the load side by the pair of blade receiving fittings 12. It becomes a state.

  Connected to the DC power distribution outlet 10 configured as described above is a DC device, in this embodiment, a lighting fixture using a semiconductor light emitting element driven by DC as a light source.

  As shown in FIG. 1, the lighting fixture 20 is a ceiling-suspended home light, and a plurality of light emitting diodes (hereinafter referred to as “LEDs”) 21 are connected in series as a light source to emit light 21 a. Configure. This light-emitting portion 21a is connected to the above-described DC power distribution outlet 10 by a plug 22 with a cord, and is lit when supplied with DC power.

  The plug 22 with the cord is always in contact with the pair of blade blades 12a of the above-described DC power distribution outlet 10 and the pair of plug blades 22a to be inserted and removed and the conductor 13 disposed oppositely. It has the electric insulator 22b which makes | forms one rod shape inserted / extracted so that it may be inserted or extracted with respect to between the one receiving metal fitting 13a and the other receiving metal fitting 13b. The other end of the cord C having one end connected to the input terminal of the LED 21 is connected to the pair of plug blades 22a. Further, the plug 22 is provided with a gap dimension between the pair of plug blades 22a different from the gap dimension of the blade bracket 12 and with the electric insulator 22b protruding so that an existing outlet for AC 100V is provided. Cannot be plugged into. This prevents safety from being accidentally supplied to the lighting apparatus that uses direct current as a power source, thus ensuring safety.

  The lighting fixture 20 configured as described above is used by connecting the plug 22 to the DC power distribution outlet 10. That is, as shown in FIG. 1, the pair of plug blades 22 a of the plug 22 are inserted into the pair of insertion holes 11 b 1 of the DC power distribution outlet 10. As a result, the plug blade 22a is inserted into the blade receiving portions 12a and 12b of the blade receiving bracket. At the same time, a rod-shaped electrical insulator 22b is inserted and inserted between one receiving metal 13a and the other receiving metal 13b of the conductor 13 which is always in contact. As a result, as shown in FIG. 4 (a), one wire support portion 14a → the blade receiving portion 12a of one blade receiving bracket → the LED 21 of the lighting fixture → the blade receiving portion 12b of the other blade receiving bracket → the other electric wire. A closed circuit of the support portion 14b is formed, and a DC power is supplied to the LED 21.

  When the plug 22 is pulled out, the pair of plug blades 22a are pulled out from the pair of blade receiving brackets 12, and at the same time, the one receiving bracket 13a and the other receiving bracket 13b are returned to contact with each other by the elastic force of the conductor 13. The As a result, as shown by the dotted arrow in FIG. 4B, one wire support portion 14a → the blade receiving portion 12a of one blade receiving metal → the one receiving metal fitting 13a of the conductor → the other receiving metal fitting 13b → the other The blade receiving part 12b of the blade receiving metal fitting → the electric path A of the other wire support part 14b is formed.

  As shown in FIG. 1, the plug blade 22a of the plug 22 is formed so as to protrude longer than the electrical insulator 22b, and when the plug 22 is inserted into the DC power distribution outlet 10, the pair of plug blades 22a is first formed. Is inserted into the blade receiving portions 12a and 12b of the blade receiving metal fitting, and then the electric insulator 22b is inserted between one receiving metal fitting 13a and the other receiving metal fitting 13b. The connection with the receiving bracket 13b is released.

  Next, the configuration of a DC power distribution system for connecting the DC power distribution outlet 10 and the lighting fixture 20 configured as described above will be described. As shown in FIG. 4, the DC power distribution system 30 of the present embodiment includes a DC power supply unit 31, a current circuit 32 configured on the output side of the DC power supply unit, and the above-described DC distribution outlet connected in series to the current circuit. It consists of ten.

  In this embodiment, the DC power supply unit 31 includes an AC distribution board 31a and a DC distribution board 31b connected to a commercial AC power system. The AC distribution board 31a includes a limiter 31a1, a main breaker 31a2, and a branch breaker 31a3. Is housed in the main body 31a4, the power line of a single-phase three-wire commercial AC power supply is connected to the input side, and the output side is connected to the input side of the DC distribution board 31b.

  The DC distribution board 31b includes a power conversion unit 31b1 including a rectifier circuit that converts alternating current input from the AC distribution board 31a into direct current, a DC / DC converter that steps down a direct current voltage obtained by the rectifier circuit, and the like. And the electric current circuit 32 is comprised by the output side of a power converter.

  A plurality of the above-mentioned DC distribution outlets 10 are connected to the current circuit 32, and in this embodiment, four DC distribution outlets 10 are connected in series. The DC power distribution outlet 10 connects the power supply line W1 on the DC power supply unit 31 side to one wire support portion 14a of a pair of screwless terminals constituting the wire connection portion 14, and the other DC support portion 14b and the next DC. Connect one DC connection outlet 14 of the distribution outlet 10 by the power line W2, and connect the four DC distribution outlets 10 in series by connecting the next DC distribution outlets 10 in order. A DC power distribution system 30 is configured. The four DC power distribution outlets 10 are installed one by one on the ceiling surface X of each room, and the power lines W1, W2 and the like constituting the current circuit 32 are wired on the back of the ceiling.

  In the DC power distribution system 30 configured as described above, the lighting fixture 20 using the LED 21 having the plug described above as a light source is connected to the DC power distribution outlet 10 installed on the ceiling surface of each room.

  First, as shown in FIG. 1, the hanging string 33 is hooked on a hanger 34 provided in the DC power distribution outlet 10, and the luminaire 20 is suspended from the ceiling surface X and installed. Next, the pair of plug blades 22 a of the plug 22 provided in the lighting fixture 20 are inserted into the respective pair of insertion holes 11 b 1 of the DC power distribution outlet 10. As a result, the pair of plug blades 22a are inserted into the blade receiving portions 12a and 12b of the blade receiving metal fittings, and at the same time, the one electric receiving metal piece 13a and the other receiving metal fitting 13b are always in contact with the rod-shaped electrical insulator 22b. Is inserted between and inserted.

  Similarly, the lighting fixture 20 for each room is connected and installed to the DC power distribution outlet 10 of each room. The lighting fixtures in each room can be connected as they are, with different numbers of LEDs used and different rated voltages. Accordingly, as shown in FIG. 4A, between each lighting fixture 20 and the DC power distribution outlet 10, one electric wire support portion 14 a → the blade receiving portion 12 a of one blade receiving bracket → the LED 21 of the lighting fixture. → Blade receiving portion 12b of the other blade receiving bracket → A closed circuit of the other wire support portion 14b is formed. Each closed circuit is connected in series to the DC power supply unit 31 by a current circuit 32 and wired so that DC power is supplied to each lighting fixture 20, and a switch or a wall switch incorporated in each lighting fixture 20 is turned on. Turns on and lights up each room.

  Thus, when the user replaces the luminaire by changing the room or changing the installation location, the plug 22 of the luminaire 20 that has been installed is first pulled out from the DC power distribution outlet 10 and suspended. Remove the string 33 and remove the appliance from the ceiling surface X. At this time, when the plug 22 is pulled out, as shown in FIG. 4B, the pair of plug blades 22a are pulled out from the blade receiving bracket 12, and at the same time, one of the receiving brackets 13a and the other receiving bracket are received by the elastic force of the conductor 13. It returns so that the metal fitting 13b contacts. Thereby, one electric wire support part 14a → the blade receiving part 12a of one blade receiving metal → the one receiving metal 13a of the conductor 13 → the other receiving metal 13b → the blade receiving part 12b of the other blade receiving metal → the other The electric circuit A of the electric wire support part 14b is formed, and the closed circuit in the current electric circuit 32 in which the above-described lighting devices 20 are connected in series is not opened by removing one lighting device, and lighting in another room The fixture is connected to the DC power supply unit 31 as it is, and the other lighting fixtures are kept in a state where DC power is supplied.

  Incidentally, in the case where the outlet is configured with a normal outlet in which the conductor 13 of the present invention is not installed, as shown in FIG. 6, when the appliance side plug 6 is pulled out from the power source side connector 5, the appliance side Since the lighting fixture 3 is not connected to the pair of connectors 5, a series closed circuit by a current circuit is not configured (B portion in FIG. 6), and the remaining lighting fixture is not supplied with DC power, The luminaire in the room cannot be turned on unless the luminaire to be replaced is connected.

  Next, when replacing the fixture, a new lighting fixture 20 using the LED 21 having the plug 22 as a light source is prepared, and the plug 22 provided on the lighting fixture 20 is replaced in the same manner as the installation procedure described above. The pair of plug blades 22a are inserted into the pair of insertion holes 11b1 of the outlet 10 for DC power distribution. As a result, as shown in FIG. 1, a pair of plug blades 22a are inserted into the blade receiving portions 12a and 12b of the blade receiving bracket, and at the same time, one of the conductor receiving brackets is always in contact with the rod-shaped electrical insulator 22b. It is inserted and inserted between 13a and the other metal fitting 13b.

  Accordingly, as shown in FIG. 4A, between each lighting fixture 20 and the DC power distribution outlet 10, one electric wire support portion 14 a → the blade receiving portion 12 a of one blade receiving bracket → the LED 21 of the lighting fixture. → Blade receiving portion 12b of the other blade receiving bracket → A closed circuit of the other wire support portion 14b is formed, and this closed circuit is connected in series to the DC power supply portion 31 by the current circuit 32, as before the appliance replacement. The current circuit 32 is formed in such a state that power is supplied to the luminaire replaced with the remaining luminaires.

  When the plug is inserted into the outlet, the plug blade 22a is first inserted into the blade receiving portions 12a and 12b of the blade receiving metal fitting, and then the electric insulator 22b is connected to one receiving metal fitting 13a and the other receiving metal fitting 13b. And the connection between one receiving metal fitting 13a and the other receiving metal fitting 13b is opened, so that the current flowing through the conductor 13 is partially diverted to the lighting fixture 20 side. Since the circuit can be opened in the connected state, it is possible to suppress the occurrence of arcs due to circuit interruption.

  As described above, according to the DC power distribution outlet 10 of this embodiment, the connection between the pair of blade brackets 12 is opposed to be opened and closed by inserting and removing the electrical insulator 22b provided on the plug 22 of the lighting fixture 20. By providing the disposed conductors 13, even if the lighting fixtures 20 are removed in order to change or change the installation location, the closed circuit in the current circuit 32 in which the lighting fixtures 20 are connected in series is opened. There can be maintained a state in which the DC power is supplied to the remaining other lighting fixtures. Accordingly, it is possible to provide a DC power distribution outlet capable of easily replacing a DC system device such as a lighting fixture or changing the installation location.

  Moreover, according to the lighting fixture 20 of a present Example, replacement | exchange and installation of the lighting fixture 20 are provided by providing the plug 22 which has the electrical insulator 22b withdrawn / inserted with respect to the socket 10 for DC distribution comprised as mentioned above. It is possible to provide a lighting apparatus that uses the LED 21 as a light source that can be changed in place. In particular, in the installation of the luminaire, the DC power distribution outlet 10 described above can be simply installed by a normal operation of simply inserting the plug into the outlet as in the conventional case. When exchanging lighting fixtures, changing the installation location, etc., the fixture removal operation can be performed by pulling out the plug and simultaneously removing the electrical insulator 22b from the conductor 13, and installing a new lighting fixture. As for the operation, the electrical insulator 22b can be inserted into the conductor 13 simultaneously with the operation of inserting the power plug, and can be easily performed without any change from the conventional operation and without any special operation.

  Further, according to the DC power distribution system 30 of the present embodiment, since the plurality of DC power distribution outlets 10 connected in series to the current circuit 32 are provided, the number of LEDs 21 used is different and the rated voltage is different. It is possible to provide a constant current distribution system that can connect a DC system device such as a lighting fixture and can easily replace the DC system device and change the installation location. In particular, the system can be constructed by a simple wiring work in which a plurality of DC power distribution outlets 10 are connected in series to the current circuit 32 configured on the output side of the DC power supply unit 31 and is excellent in workability. A direct current distribution system can be provided.

  In particular, when the plug 22 is inserted into the DC power distribution outlet, the plug blade 22a is first inserted into the blade receiving portions 12a and 12b of the blade receiving metal fitting, and then the one metal fitting 13a and the other metal fitting 22b are inserted by the electric insulator 22b. To provide a safe DC distribution outlet, a lighting fixture, and a DC distribution system that can suppress the occurrence of an arc due to circuit interruption because the connection with the metal fitting 13b is opened. Can do.

  As described above, in this embodiment, as shown in FIG. 5, the DC power distribution outlet 10 is constituted by the hooking sealing body 40, the plug 22 of the lighting fixture 20 is constituted by the hooking sealing cap 41, and the hooking ceiling cap 41 is rotated. You may comprise so that the connection between a pair of blade metal fittings 40a and 40b of the body 40 may be opened and closed by operation.

  That is, the switch 40 s is provided on the surface portion of the hook sealing body 40. This switch includes a movable contact plate 40s1 constituting the conductor 13 of the present invention disposed so as to be opened and closed so that the connection between a pair of blade receiving brackets 40a and 40b provided in the hooking sealing body 40 is opened and closed. And a normally closed switch having a fixed contact plate 40s2. The switch 40s is provided with an operation button 40s3 that presses the movable contact plate 40s1 to release the contact and release the press to close the contact.

  Further, the hooked sealing cap 41 is integrally protruded with a cylindrical plastic rod-shaped electric insulator 41b at the center (rotation center) between a pair of L-shaped plug blades 41a and 41b. The cam 41b1 is integrally formed on the top of the electrical insulator. The cam 41b1 is disposed opposite to the operation button 40s3 of the switch 40s of the hooking sealing body 40. The other configurations of the hook sealing body 40 and the hook sealing cap 41 have conventionally known configurations.

  A plurality of hook ceiling bodies 40 having the above-described configuration are prepared, installed on the ceiling surface X of each room in the same manner as described above, and connected in series to the current circuit 32 of the DC distribution system 30 and wired. Further, the hanging ceiling cap 41 configured as described above is connected to the cord C of the lighting fixture 20 using the LED 21 configured in the same manner as the light source to constitute a hanging type fixture.

  Then, the pair of plug blades 41a and 41b of the hanging ceiling cap 41 of the lighting fixture 20 configured as described above is inserted and inserted into the hanging sealing body 40 installed on the ceiling surface X, and the cap is rotated clockwise. Then, the cap blades 41a and 41b of the pair of caps are engaged with and connected to the pair of blade receiving brackets 40a and 40b of the body. By this turning operation, the electric insulator 41b of the cap is turned, and the cam 41b1 presses the operation button 40s3 of the switch 40s to press the movable contact plate 40s1 to open the contact. Thus, as described above, a closed circuit of one electric wire support portion → one blade receiving bracket 40a → LED of lighting fixture → the other blade receiving bracket 40b → the other electric wire support portion is formed. The current source 32 is connected in series to the DC power source 31.

  Further, when the lighting fixture 20 is replaced or the installation location is changed, the cap 41 of the installed lighting fixture is rotated counterclockwise to form a pair of L-shaped plug blades 41a and 41b of the cap. The engagement of the pair of blade receiving brackets 40a, 40b of the body 40 is released, the plug blades 41a, 41b of the cap 41 are pulled out from the body 40, and the lighting fixture 20 is removed from the ceiling surface X.

  At this time, simultaneously with the rotation of the cap 41 in the counterclockwise direction, the cam 41b1 of the electric insulator 41b is rotated, the pressing of the operation button 40s3 of the switch 40s is released, and the movable contact plate 40s1 has its elastic force. Is returned to close the contact. As a result, as described above, an electric circuit of one electric wire support portion → one blade receiving bracket 40a → switch movable contact plate 40s1 → fixed contact plate 40s2 → other blade receiving bracket 40b → other electric wire support portion is formed. The closed circuit in the current circuit 32 in which a plurality of lighting fixtures are connected in series is not opened by removing one lighting fixture, and the lighting fixtures in other rooms are connected to the DC power supply unit 31 as they are, The state where the DC power is supplied to the other lighting fixtures can be maintained, and the same effects as the DC power distribution outlet 10, the lighting fixture 20, and the DC power distribution system 30 described above can be achieved. In particular, according to the configuration of the present modification, since electrical connection and mechanical connection are formed by the hooking ceiling, it is possible to install the luminaire directly by the cord C without using a hanging strap. Become.

  In this modification as well, when the cap 41 is inserted into the body 40, the L-shaped plug blade 41a of the cap 41 is first engaged with and connected to the blade receiving bracket 40a of the body 40, and then electrically insulated. The body 41b is configured so that the connection between the movable contact plate 40s1 and the fixed contact plate 40s2 of the switch 40s is opened, and is configured so as to suppress the generation of an arc due to circuit interruption.

  In addition, the DC power supply unit 31 of the DC distribution system in the present embodiment is configured by installing the AC distribution board 31a and the DC distribution board 31b, but the AC distribution board 31a and the DC are installed in one distribution board. You may make it accommodate the distribution board 31b integrally. Moreover, you may comprise the direct-current power supply part 31 by exclusive batteries, such as a rechargeable battery and a solar cell.

  In FIG. 5 showing the modification, the same parts as those in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted. Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 DC distribution outlet 11 Main body 12 Blade holder 13 Conductor 14 Electric wire connection part 20 Lighting fixture 21 Semiconductor light emitting element 22 Plug 22a Plug blade 22b Electrical insulator 30 DC power distribution system 31 DC power supply part 32 Current electric circuit

Claims (3)

A body made of electrical insulation;
A blade bracket that is housed in the body and connected to a DC device;
When the plug of the DC system device is accommodated in the body and connected to the blade bracket, the electrical insulator provided in the DC system device is arranged to open and close the connection between the blade brackets. A conductor;
An electric wire connecting portion provided on the main body for connecting the blade bracket to the DC power supply portion;
An outlet for direct current distribution characterized by comprising: A plug having an electrical insulator that opens and closes a connection between the blade bracket and the plug and the conductor connected to the blade bracket of the outlet for direct current distribution according to claim 1;
A light source comprising a semiconductor light emitting element connected to a DC current circuit via a plug;
The lighting fixture characterized by comprising. A DC power supply;
A current circuit configured on the output side of the DC power supply;
A plurality of DC power distribution outlets connected in series with the current circuit;
A DC power distribution system comprising:

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