JP6042637B2 - LED lighting system - Google Patents

Description

  The present invention relates to an LED lighting system that reduces equipment costs.

  In recent years, LED (light emitting diode) illumination, which replaces incandescent lamps and fluorescent lamps, has been attracting attention from the viewpoint of the power saving effect accompanying power saving, and various LED lighting fixtures (LED lamps) have been developed and commercialized. Yes. This type of LED lighting fixture, for example, a bulb-type LED lighting fixture, is an LED unit (light source) and its driving circuit incorporated in a semi-transparent spherical bulb, and is exclusively E26 connected to a commercial power line. It is used by being mounted on a lighting fixture socket having a die or E17 type cap. For this reason, the light bulb type LED lighting fixture further rectifies the commercial AC power supply (AC100V) fed from the lighting fixture socket and then converts the voltage to generate DC power, In addition to the LED unit, an LED drive circuit for driving light emission is incorporated (see, for example, Patent Document 1).

JP 2010-33863 A

  However, when the power supply circuit and the LED driving circuit described above are incorporated for each LED lighting fixture, not only the configuration of the LED lighting fixture is complicated, but also the manufacturing cost increases and the price increases. Moreover, it is necessary to take measures against the heat generated by driving the LED unit and the heat generated by the power supply circuit without significantly changing the external shape and dimensions of the light bulb. It becomes a problem in doing.

  The present invention has been made in consideration of such circumstances, and its purpose is to reduce the price by making the LED lighting fixture a direct current drive type, and to install an existing commercial power supply line that has constructed a power supply system for lighting. An object of the present invention is to provide an LED lighting system that reduces the equipment cost by connecting the DC drive type LED lighting fixture to the commercial power line while effectively utilizing it.

In order to achieve the above-described object, an LED lighting system according to the present invention includes a commercial power received from a commercial power supply line that is interposed in a power reception unit of an existing commercial power supply line that has constructed a power supply system for illumination, and is a direct current having a predetermined voltage. An AC / DC converter that converts the converted power into electric power and feeds the converted DC power to the existing commercial power supply line that constructs the illumination power supply system, and is connected to the existing commercial power supply line that constructs the illumination power supply system DC drive type LED lighting fixtures,
The LED lighting apparatus is driven to be turned on using an existing commercial power supply line in which the power supply system for illumination is constructed as a DC power supply line.

  Preferably, the AC / DC converter is interposed on a secondary side (load side) of an overcurrent breaker provided in a power receiving unit of an existing commercial power supply line that has constructed the illumination power supply system, and is used for the illumination. Using the hot side (black or red coated wire) of the existing commercial power line that has constructed the power system as the positive line and the cool side (white coated line) of the commercial power line as the negative line, Provided to supply power.

  The AC / DC converter is preferably provided in each of the power receiving units of a plurality of commercial power supply lines that are laid for each preset power supply area and construct a lighting power supply system for each power supply area. The preset power supply area is, for example, an individual room in a hotel, a different floor, an area having a different purpose of use such as a hallway or a hall, or an area partitioned in advance according to the floor area. Point to.

  The DC-driven LED lighting fixture is a plug that can be mounted on an existing lighting fixture socket connected to an existing commercial power supply line, for example, an E26 type base socket or an E17 type base socket. It has a structure and is configured to be detachably attached to the lighting fixture socket with the same polarity. For example, the center electrode portion of the lighting fixture socket is connected to the hot side of the commercial power supply line and used as a positive electrode, and the base recess of the lighting fixture socket is connected to the cool side of the commercial power supply line and used as a negative electrode. .

  The AC / DC converter has a converter function of receiving DC power instead of the commercial power received via the commercial power line, and converting the DC power into a step-up / down converter to obtain DC power of the predetermined voltage. It is desirable to provide. Incidentally, the DC power is, for example, photovoltaic power and / or wind power, and is independent of a commercial power line that feeds commercial power to a power receiving unit of an existing commercial power line that has constructed the lighting power system. It is desirable to supply power to the AC / DC converter via a dedicated DC power line. At this time, it is desirable to store the solar power generation power and / or wind power generation power in a large-capacity battery as DC power energy together with commercial power supply power in a specific time zone, and supply power from the battery as DC power.

  When receiving DC power via a DC power line independent from the commercial power line, the DC power is converted into the predetermined voltage by step-up / down converting the DC power instead of the AC / DC converter. It is of course possible to use a dedicated converter for obtaining

  According to the LED lighting system having the above configuration, it is not necessary to incorporate a power supply circuit or an LED drive circuit including an AC / DC converter into each LED lighting fixture. Since it is only necessary to incorporate a current circuit, the configuration of the LED lighting apparatus itself can be simplified and the cost can be reduced. In addition, since the amount of heat generation can be suppressed to a low level, it is not necessary to take a large measure of heat generation as found in conventional general AC drive type LED bulbs.

  In addition, an AC / DC converter is installed on the secondary side of the overcurrent breaker on the power receiving part of the existing commercial power line that has constructed a power supply system for lighting in a preset power supply area. Since the existing commercial power supply line with the built-in power supply system is used as it is as a DC power supply line, the overall equipment cost (renovation cost) can be greatly reduced. Moreover, since it is only necessary to supply DC power to the illumination power supply system in a limited power supply area, a small and inexpensive one with a small power capacity can be used as the AC / DC converter, and its installation is easy. .

  Furthermore, even when using solar power or wind power, it is necessary to convert the solar power or wind power stored in the battery as DC power energy into AC power and supply it to the commercial power line. Because there is no large equipment cost for DC / AC conversion. Therefore, effects such as being able to introduce solar power generation power or wind power generation power as an illumination power source at low cost are exhibited.

The principal part schematic block diagram of the LED lighting system which concerns on one Embodiment of this invention. The figure which shows the example of the existing lighting fixture socket connected to the commercial power source line used as a DC power supply line, and the LED lighting fixture with which this lighting fixture socket is mounted | worn. The figure which shows the example of the solar power generation device and wind power generation device which are introduce | transduced into the LED lighting system which concerns on this invention. The figure which shows the structural example of the AC / DC converter interposed by the power receiving part of a commercial power supply line. The figure which shows the example of a switch with a dimmer.

  Hereinafter, an LED lighting system according to an embodiment of the present invention will be described with reference to the drawings, taking as an example a case where it is applied to hotel room lighting.

  FIG. 1 is a schematic configuration diagram of a main part of an LED lighting system according to an embodiment of the present invention, and regions A and B surrounded by a one-dot chain line in the drawing indicate individual cabin areas in a hotel. In each of these guest room areas A and B, there are installed commercial power supply lines 10 and 20 for constructing an illumination power supply system (hereinafter abbreviated as illumination system) and an outlet power supply system (hereinafter abbreviated as outlet system), respectively. A plurality of lighting fixtures 11 are connected to the commercial power line 10 of the lighting system, and a plurality of outlets 21 are connected to the commercial power line 20 of the outlet system.

  The illumination-type commercial power supply line 10 and the outlet-type commercial power supply line 20 are, for example, an overcurrent breaker 30 provided in a power receiving unit of a commercial power supply (100 V AC) provided for each of the cabin areas A and B. On the secondary side (load side), the output power supply line is set to branch into two systems via a joint (not shown).

  Further, commercial power (AC power) fed to the overcurrent breakers 30 in the guest room areas A and B is distributed through a commercial AC power line 31 drawn into a building such as a hotel as shown in FIG. And distributed to each of the plurality of power feeding areas set in advance on the distribution board 32 to feed power to the cabin areas A and B, respectively. The distributed power supply from the distribution board 32 to each of the guest room areas A and B is performed via a plurality of commercial AC power supply lines 33 laid (indoor wiring) independently of each other in association with a plurality of power supply areas.

  On the other hand, the plurality of lighting fixtures 11 are generally detachably attached to a lighting fixture socket (see FIG. 2) 13 connected to the commercial power line 10 via a switch 12. Is connected to the commercial power line 10. Incidentally, when the lighting fixture 11 is, for example, an incandescent lamp having an E26 type or E17 type cap projection, a so-called bulb type fluorescent lamp, or a general AC LED bulb, For example, a light bulb socket having an E26 type or E17 type base recess as shown in FIG. 2 is used.

  When a lighting fixture 11 such as a ceiling light in which a straight tube type or an annular fluorescent lamp is mounted on the lighting fixture body is connected to the commercial power line 10, the fluorescent lamp is used in this embodiment. Are replaced with the above-mentioned lighting fixture socket 13 together. Or it replaces | exchanges for the direct current drive type LED panel lighting fixture mentioned later.

  Here, the LED lighting system according to the present invention is characterized by the secondary of the overcurrent breaker 30 provided in the AC power receiving unit of 100 V in each of the guest room areas A and B as shown in FIG. AC (DC / DC) converter (AC / DC converter) that converts 100V AC power (commercial power) into DC power of a predetermined voltage (for example, 24V) at the power receiving section of the commercial power supply line 10 of the lighting system, particularly on the load side DC converter) 40 is interposed, and the DC power converted by the AC / DC converter 40 is supplied to the commercial power line 10 of the illumination system. In other words, the commercial power line 10 of the illumination system is directly used as a DC power line 50, and the DC power converted by the AC / DC converter 40 is supplied to the DC power line 50. .

  The DC power supply to the DC power supply line 50 (commercial power supply line 10) is performed by connecting the hot side (black or red coated wire) 10a of the commercial power supply line 10 to the DC power supply line 50 as illustrated in FIG. A positive line (positive side of DC voltage) is used, and a cool side (white coated wire, ground side) 10b of the commercial power line 10 is used as a negative line (negative side of DC voltage) of the DC power line 50. As a result, the existing commercial power supply line (AC power supply line) 10 of the illumination system is used as it is as a DC power supply line 50 forming a new illumination power supply system. The lighting fixture socket 13 connected to the commercial power line 10 of the lighting system is functionally used as a direct current light bulb socket having a central electrode portion 13a as a positive electrode and a cap recess portion 13b as a negative electrode.

  On the other hand, as described above, the luminaire 11 attached to the luminaire socket 13 used as a direct-current bulb socket is a DC-driven LED luminaire (LED lamp) 60 having an E26 type or E17 type cap projection. Consists of. As shown in FIG. 2, for example, the direct current drive type LED lamp 60 includes an LED unit (light source) 62 and a resistance for limiting LED drive current in a translucent spherical bulb body 61 such as acrylic forming a light diffusion plate. (Not shown) is incorporated. For example, the cathode of each LED in the LED unit 62 of the direct current drive type LED lighting fixture (LED lamp) 60 is connected to a cap recess (negative electrode) 63 of the LED lamp 60, and the anode of the LED is the LED drive. The LED lamp 60 is connected to the central protrusion electrode 64 through a current limiting resistor.

  Incidentally, the LED unit 62 is formed by, for example, mounting a plurality of high-brightness LEDs on a printed wiring board. The LED driving current limiting resistor (chip resistor) is mounted on the back side of the printed wiring board. Of course, it is also possible to use an integrated LED unit 62 in which a constant current circuit including a power regulator IC and a resistor is mounted on the back side of a printed wiring board on which a plurality of high-brightness LEDs are surface-mounted.

  In other words, the DC-driven LED lamp 60 rectifies the commercial AC power supply (AC 100 V) described above from a conventional general-purpose AC power bulb-type LED lighting fixture, and then converts the voltage to generate DC power. A power supply circuit (for example, a switching regulator) and an electronic circuit such as an LED drive circuit that emits light by applying DC power generated by the power supply circuit to the LED unit are omitted, and the LED unit 62 and the resistor for limiting the LED drive current are omitted. Or, it has a simple configuration in which a constant current circuit composed of a regulator IC and a resistor is incorporated. The LED unit 62 is directly driven to emit light with DC power supplied from the DC power supply line 50. Therefore, the manufacturing cost itself of the LED lamp 60 is significantly reduced as compared with a conventional bulb-type LED lighting fixture for general AC power.

  Thus, according to the LED lighting system constructed by mounting such a DC drive type LED lamp 60 on the lighting fixture socket 13 connected to the DC power supply line 40 described above, the equipment cost can be kept sufficiently low. be able to. That is, the DC drive type LED lamp 60 is inexpensive as described above, and the AC / DC converter 40 interposed in the power receiving unit of the commercial power line 10 of the illumination system is also included in the commercial power line 10. It is possible to use an inexpensive one having a relatively small power capacity in consideration of the maximum number of LED lamps 60 to be connected. Furthermore, since the existing commercial power supply line 10 of the illumination system is directly used as the DC power supply line 50, the equipment cost (renovation cost) of the entire system can be kept sufficiently low. Depending on the specifications of the LED used for the DC drive type LED lamp 60, it is possible to omit the resistor for limiting the LED drive current.

  Further, instead of the fluorescent lamp illuminator 11 such as a ceiling light in which a straight tube type or an annular fluorescent lamp is mounted on the luminaire main body, a DC drive type LED panel illuminator (not shown) is replaced with the DC power line 50. Also in the case of being connected to and used, the DC drive type LED panel lighting fixture can be realized at low cost, and similarly, the equipment cost (remodeling cost) of the entire system can be kept sufficiently low.

  In this case, the DC drive type LED panel lighting fixture is surrounded by a strip-like flexible printed wiring board (tape-like flexible printed circuit board) surrounding the back surface side or the end surface of the panel body functioning as a light diffusion plate such as an acrylic plate. An LED unit 62 having a plurality of LEDs mounted thereon is disposed on the substrate), and the plurality of LEDs are driven to emit light through a resistor for limiting the LED driving current or a constant current circuit including a regulator IC and a resistor. The configuration is as follows. If the LED unit 62 is directly driven to emit light by the DC power supplied from the DC power supply line 50, the DC drive type LED panel lighting fixture can be made inexpensive as with the LED lamp 60 described above. realizable.

  By the way, it is also useful to operate the LED lighting system by supplying electric power obtained by solar power generation or wind power generation to the DC power supply line 50 in the LED lighting system constructed as described above. In this case, for example, as shown in FIG. 3, the solar power generation energy (direct current) obtained by the solar battery panel 71 installed on the roof of a building such as a hotel is converted into a battery under the control of the solar power generation control unit 72. The battery is stored (charged) in a large-capacity battery (capacitor; not shown) built in the device 73.

  Similarly, the battery device converts wind power generation energy (AC) obtained by the wind power generator 74 installed on the roof of a hotel or the like into DC power energy under the control of the wind power generation control unit 75. The battery is stored (charged) in the large-capacity battery built in 73. Further, a commercial AC power source (so-called late-night power) in a specific time zone obtained via an AC power supply panel (upper distribution board) 76 is built in the battery device 73 via an AC / DC converter 77. Accumulate (charge) the battery of capacity.

  Then, under the control of the charge / discharge control unit 78 incorporated in the battery device 73, the direct current power line 79 independent of the commercial power line 33 is supplied to the electric energy (direct current) stored in the large capacity battery. Power is supplied to each power supply area described above. The DC power is supplied from the battery via the DC power supply line 79 to the AC / DC converter 40 provided in the power receiving unit of the DC power supply line 50 installed in each of the power supply areas described above.

  In this way, the photovoltaic power energy and the wind power energy, and further the commercial power energy in a specific time zone are stored in the battery, and the DC power supplied from the battery via the DC power line 79 is used to store the energy. When the DC drive type LED lamp 60 connected to the DC power supply line 50 or the DC drive type LED panel lighting fixture is driven to turn on, the AC / DC converter 40 is configured as shown in FIG. 4, for example. It is desirable.

  That is, as shown in FIG. 4, the AC / DC converter 40 has a diode bridge circuit 41 for full-wave rectifying the AC power applied to the AC input terminal ACin, and the output (pulsating flow) of the diode bridge circuit 41 is smoothed. An input capacitor 42 to be converted, an input voltage Vin smoothed by the input capacitor 42 using a switching element such as a MOS-FET, and a DC converter 43 for obtaining DC power of a predetermined voltage, and the DC converter 43 And an output capacitor 44 for smoothing the output and outputting from the DC output terminal DCout. In addition, the DC power applied to the DC input terminal DCin is further applied to the input capacitor 42 via the diode 45 for preventing backflow.

  The DC converter 43 includes, for example, a series resonance circuit (not shown) composed of an inductance and a capacitor, and PWM modulates a high-frequency pulse signal for controlling on / off of the switching element, thereby generating an input voltage Vin. A resonance type step-up / step-down chopper circuit that obtains DC power of a predetermined voltage that is applied to the step-up / step-down may be used. According to the AC / DC converter 40 mainly composed of such a DC converter (step-up / step-down chopper circuit) 43, as described above, the commercial power source (AC) is provided via the commercial power line 10 of the illumination system. Not only when converting to DC power of a predetermined voltage, but also when the use of DC power fed from the battery described above via the DC power supply line 79 becomes possible in the future, the LED illumination system remains effective. It becomes possible to utilize it.

  However, in the AC / DC converter 40 having the configuration illustrated in FIG. 4, the input voltage Vin obtained by rectifying and smoothing the AC power received from the AC input terminal ACin and the input of the DC power applied to the DC input terminal DCin. Because the voltage Vin is very different. The DC converter 43 is required to have input / output characteristics that can cope with a wide range of input voltage Vin. Accordingly, at the initial stage of constructing the LED lighting system, the AC / DC converter 40 having a function of only converting 100V commercial power into DC is used, and then the DC power supplied through the DC power line 79 is used. When the use becomes possible, a DC converter (step-up / step-down chopper circuit) that obtains a predetermined DC voltage by stepping up / down the DC power fed from the DC power supply line 79 is replaced with the AC / DC converter 40. It is preferable to use it.

  In such a DC converter (step-up / step-down chopper circuit), since the voltage of the DC power fed through the DC power supply line 79 is relatively stable, it can cope with a wide input voltage Vin as described above. Input / output characteristics are not required, and thus an inexpensive device with a simple configuration can be used. If such a DC converter is used, even if the voltage of the DC power supplied from the battery via the DC power supply line 79 decreases due to the transmission loss, the DC converter (step-up / down chopper circuit) boosts the voltage. Therefore, it is possible to effectively compensate for the voltage drop and keep the DC voltage supplied to the DC power supply line 50 substantially constant. Therefore, it is possible to stably drive and drive the above-described DC drive type LED lamp 60 and DC drive type LED panel lighting fixture.

  The present invention is not limited to the embodiment described above. For example, the power supply area in which the AC / DC converter 40 is interposed in the commercial power supply line 10 of the illumination system and the commercial power supply line 10 of the illumination system is used as the DC power supply line 50 is a section for each floor in a multi-storey building. It may be an area that is divided into individual guest rooms in a hotel, an area that has a different purpose of use such as a hallway or a hall, or an area that is previously divided according to the floor area, etc. Also good. Specifically, for example, a corridor on each floor in a hotel is set as an independent power supply area, and the footlights and downlights provided in these power supply areas (corridors) are turned on by the LED lighting system. Just do it.

  Further, when a switch with a dimmer that changes the brightness of the incandescent bulb is used as the switch 12, for example, it is replaced with a switch with a pulse lighting control type dimmer as shown in FIG. Just do it. The pulse lighting control type dimmer switch illustrated in FIG. 5 outputs the output of the PWM modulator 15a in which the pulse width is variably set according to the control voltage Vth set by dividing the input voltage Vin by resistance. The semiconductor switch 15b such as a MOS-FET is used to be turned on / off, and the DC voltage is output in a pulse manner only when the semiconductor switch 15b is turned on.

  According to such a switch with a dimmer, the LED lamp 60 and the LED panel are turned on and off intermittently by turning on and off the DC voltage applied to the DC drive type LED lamp 60 and the DC drive type LED panel lighting fixture. It is possible to drive the lighting apparatus in a pulsed manner. Then, the lighting drive time per unit time is changed by changing the pulse width (duty ratio) by changing the control voltage Vth by the operation of the resistor, and thereby it is possible to easily perform dimming.

  Such a dimmer also has a relatively low withstand voltage because it only needs to switch the input DC voltage Vin of about 24 V compared to a conventional dimmer that changes the voltage of commercial AC power. The semiconductor switch 15b can be realized at a low cost, and is therefore suitable for introduction into the present LED dimming system. In addition, various modifications can be made without departing from the scope of the present invention.

A, B Guest room area (power supply area)
DESCRIPTION OF SYMBOLS 10 Commercial power line of lighting system 11 Lighting fixture 12 Switch 13 Lighting fixture socket 20 Commercial power line of outlet system 21 Outlet 30 Overcurrent breaker 40 AC / DC converter (AC / DC converter)
43 DC converter (buck-boost chopper circuit)
50 DC power supply line 60 DC drive type LED lamp 71 Photovoltaic panel 73 Battery panel 74 Wind power generator 79 DC power supply line

Claims (4)

The commercial power received from the commercial power supply line installed in the power receiving unit of the existing commercial power supply line that has constructed the lighting power supply system is converted into DC power of a predetermined voltage, and the converted DC power is converted to the lighting power supply system. An AC / DC converter for supplying power to the existing commercial power line constructed, and a DC drive type LED lighting apparatus connected to the existing commercial power line constructing the illumination power system, the illumination power system a L ED lighting system that lights driving the LED luminaire using existing commercial power line constructed as a DC power supply line,
The AC / DC converter is configured so that DC power can be input, and is installed in each of a plurality of preset power supply areas, and an existing commercial power supply system for each power supply area is individually constructed. Interposed on the secondary side of the overcurrent breaker provided in the power receiving part of the power line,
Direct current power obtained from solar power and / or wind power and / or commercial power in a specific time zone is stored in the battery via the charge / discharge control means for controlling the charge / discharge of the battery. An LED lighting system, wherein the power is input to the AC / DC converter through a DC power supply line independent of a commercial power supply line for supplying commercial power to a power receiving unit of the line . The AC-DC converter, the hot side of the existing building the previous SL lighting power supply system of the commercial power supply line and the cathode line, feeding a direct current power of the predetermined voltage cool side of the quotient power supply line as a negative line The LED illumination system according to claim 1. The DC-driven LED lighting fixture has a plug structure that can be attached to an existing lighting fixture socket connected to an existing commercial power supply line that has constructed the lighting power supply system, and has a polarity to the existing lighting fixture socket. LED lighting system according to claim 1 or 2 in which it is detachably attached together. The AC-DC converter, LED lighting according to any one of claims 1 to 3, characterized in that the DC power input buck converter to provided with a converter function to obtain a DC power of the predetermined voltage system.

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