JP2012129127A - Lighting device and lighting system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting device that does not require wiring from a commercial power supply by utilizing an electromagnetic induction phenomenon.SOLUTION: A lighting device using an LED includes: a rectifying circuit converting a commercial power supply to a direct current; an inverter circuit converting the direct current to an alternating current; a power transmission side coil provided inside a housing end part; and a constant current circuit stabilizing current so as to supply the LED with the direct current converted by the rectifying circuit.

Description

  The present invention relates to an illuminating device by power supply using an electromagnetic induction phenomenon and an illuminating system using the illuminating device.

  In recent years, a non-contact power supply method using an electromagnetic induction phenomenon has been used as a method of supplying power to a lighting device without using wiring of a commercial power source. In recent years, the number of cases in which a fluorescent lamp using a fluorescent tube or the like is replaced with a long-life LED lamp with low power consumption is increasing.

  For example, Japanese Patent Laying-Open No. 2010-111409 (Patent Document 1) describes a lighting device that uses a lighting duct system as a power supply system using an electromagnetic induction phenomenon. Even if there is a large power loss due to electromagnetic induction, LED illumination can be performed at a voltage lower than the voltage in the case of a fluorescent lamp.

JP 2010-114009 A

  However, since the lighting device of Patent Document 1 is a lighting duct system, it is suitable for feeding a lighting fixture in which a plurality of lighting devices having a rectangular shape or the like are directly fixed to a ceiling or a wall and arranged side by side. Not. Furthermore, the power supply from the lighting fixture to the lighting fixture needs to be alternating current, but the power supply to the LED elements in the lighting fixture needs to be direct current.

  Therefore, an object of the illumination device of the present invention and an illumination system using the illumination device is to make it possible to easily add an illumination device using electromagnetic induction even if it is fixedly installed on a ceiling or a wall.

In order to solve the above-described problems, an illumination device according to the present invention is an illumination device using an LED, and includes a rectifier circuit that converts commercial power into direct current, an inverter circuit that returns direct current to alternating current, and an interior of a housing end. And a constant current circuit that stabilizes the direct current converted by the rectifier circuit to be supplied to the LED. An illumination system according to the present invention is an illumination system using an LED having a first illumination device and a second illumination device,
The first lighting device has a power transmission side coil provided at a housing end, and the second lighting device is received by a power receiving coil provided at the housing end and the power receiving coil. It has a rectifier circuit that converts alternating current into direct current and a constant current circuit that stabilizes the current to supply the direct current converted by the rectifier circuit to the LED, and feeds power from the power transmission side coil to the power reception side coil by electromagnetic induction It is characterized by doing.

  According to the present invention, when it is desired to connect and add a plurality of lighting devices in a place where there is no wiring for commercial power, there is no need for wiring work for commercial power, and the lighting device can be easily added. An illumination system using the illumination device can be provided.

It is a top view of 1st Example of the illuminating device of this application. It is a perspective view of the state which removed the center cover of the illuminating device of FIG. It is a perspective view of the state which removed the center cover and the diffusion panel of the illuminating device of FIG. It is a schematic diagram in the case where two lighting devices of the present application are brought close to each other and fed by electromagnetic induction. It is a block diagram which shows the circuit structure of this application. It is the perspective view which provided the coil inside the side cover of this application. It is a layout view when two lighting devices of the present application are brought close to each other and fed by electromagnetic induction. It is a 2nd Example of this application.

  Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof. 1 to 3 are views showing a lighting device according to a first embodiment of the present invention, FIG. 1 is a plan view of the lighting device, and FIG. 2 is a perspective view of the lighting device of FIG. 1 with a center cover 9 removed. FIGS. 3 and 3 are perspective views of the lighting device of FIG. 1 with the center cover 9 and the two diffusion panels 8 removed. The illuminating device 1 shown in FIG. 1 is comprised from the diffusion panel 8, the center cover 9, and the side cover 10, and the shape of the housing | casing 5 is a rectangle.

  FIG. 2 is a perspective view of the lighting device 1 of FIG. 1 with the center cover removed. The center cover 9 of the illuminating device 1 is provided so as to cover the space sandwiched between the standing portions 22 on both sides, and both edge portions 91 in the width direction are LEDs 3 (FIG. 3) which are LED elements as light sources. (Not shown), that is, an engaging portion (not shown) provided on the center side of the lighting device 1 of the two diffusing panels 8 as a diffusing portion for diffusing light from the light emitting diode and radiating to the outside. The ends 92 on both sides in the longitudinal direction of the cover 9 are respectively fixed to the side covers 10 on both sides. Edges 82 are provided at the edges on both sides in the longitudinal direction of the diffusing panel 8, and the diffusing panel 8 has an integral structure. One end of the center cover 9 in the longitudinal direction is provided with a fixing member 9 a that can be fixed to the side cover 10 by sliding the one end into the side cover 10. Furthermore, a power supply unit 6 for supplying power to the LED 3 and a connection terminal block 7 for connecting a power line from a commercial power supply are provided.

  FIG. 3 is a perspective view of the lighting device 1 of FIG. 1 with the center cover 9 and the two diffusion panels 8 removed. A long base frame 2 as a frame for mounting the LED 3 therein, and two LEDs mounted with a plurality of LEDs 3 which are so-called surface mount type pseudo white LEDs in which a blue LED element is sealed with a resin containing a yellow phosphor A reflection sheet (not shown) that reflects light from the substrate 4 and the LEDs 3 is provided along the longitudinal direction of the base frame 2. The base frame 2 is formed with two attachment holes 24 for attaching the base frame 2 to an installation place such as a ceiling or a wall. The attachment by the two attachment holes 24 is an example, and is not limited to this. Any structure that can attach the base frame 2 to a desired location may be used. The base frame 2 is also formed with two wiring holes 25 for wiring a power supply line or the like at an appropriate location.

  Furthermore, between the two standing portions 22 of the base frame 2, two handles 32 separated by an appropriate length are perpendicular to the two standing portions 22, and the two standing portions 22 are connected to each other. It is provided to connect. The worker who performs the attachment work can easily attach the lighting device 1 simply by holding the two handles 32 and attaching the base frame 2 to an installation place such as a ceiling or a wall. Moreover, since the bending rigidity of the width direction of the base frame 2 increases by these two handles 32, the bending of the illuminating device 1 can be suppressed.

  FIG. 4 is a schematic diagram when two lighting devices 1 are brought close to each other and fed by electromagnetic induction. It is the figure which showed typically that electromagnetic induction is performed from the left side illuminating device to the right side illuminating device. Specifically, the secondary side lighting device on the power receiving side from the primary side induction coil inside the right side cover 10 of the lighting device 1X which is the primary side lighting device (supplied as the first lighting device) on the power supply side. By generating a magnetic field in the secondary side induction coil inside the left side cover 10 of the lighting device 1Y (which is a second lighting device), the AC power is transmitted by using the electromagnetic induction phenomenon. Turn on the side lighting device. When the primary side lighting device is turned on with a wall-embedded switch or the like, AC power is received by the secondary side lighting device. As an example, electromagnetic induction is performed from the power transmission side coil 11 of the lighting device 1X to the power reception side coil 12 of the lighting device 1Y. The magnetic flux Φ generated at this time penetrates from the power transmission side coil 11 into the power reception side coil 12. Occurs in the direction.

  FIG. 5 is a block diagram illustrating a circuit configuration in the lighting device 1. FIG. 5A is a block diagram of the first lighting device, where the lighting device fed from a commercial power source is the first lighting device. The receiver lighting device when the coil inside the side cover 10 of the adjacent lighting device is fed by electromagnetic induction from the coil inside the side cover 10 of the first lighting device is defined as the second lighting device (FIG. 5B). ). Further, the second lighting device (second lighting device) is used as the receiver lighting device (second lighting device) when the coil inside the side cover 10 of the second lighting device is supplied with power to the coil inside the side cover 10 of the neighboring lighting device by electromagnetic induction. In order to distinguish it from the device, it is assumed that the lighting device is 2a, and this block diagram is FIG. 5 (b) as with the second lighting device. In this manner, a system in which a plurality of lighting devices that sequentially repeat power feeding and power reception in the first lighting device, the second lighting device, the 2a lighting device, the 2b lighting device, and the like is referred to as a lighting system. The 2a lighting device, the 2b lighting device, and the like have the same component configuration as the second lighting device, but English letters a and b are added for the sake of explanation.

First, FIG. 5A which is a circuit block configuration of the first lighting device will be described.
Power supply wiring is performed from the commercial power source to the connection terminal block 7. In this case, switching to the power receiving side coil 12 side on the left side of the figure is performed at the connection terminal block 7, and when a commercial power supply is inserted, the power receiving side coil 12 is opened and no current flows. In addition, although the method of not opening the wiring to the power receiving side coil 12 is possible, in this case, an induced current is generated in the power receiving side coil 12 and power consumption occurs.

  A rectifier circuit 51 using a bridge diode that rectifies an AC voltage of a commercial power source and converts it into a DC voltage, and then an inverter circuit 52 that divides the DC voltage into two and rectifies the DC voltage into an AC voltage. And then enters the power transmission side coil 11 which is the primary side induction coil. The other enters the constant current circuit 53 that converts the DC voltage output from the rectifier circuit 51 into a required DC voltage, enters the LED board 4, and turns on / off the LED 3.

  Next, FIG.5 (b) is the case of the 2nd illuminating device, and is feeding using the electromagnetic induction of the coil from the 1st illuminating device. That is, electromagnetic induction is performed from the power transmission side coil 11 of the first lighting device to the power reception side coil 12 of the second lighting device, and is divided into the rectifier circuit 51 and then to the two through the terminal block 7, One enters an inverter circuit 52 that rectifies a DC voltage and converts it into an AC voltage, and then enters a power transmission coil 11 that is a primary induction coil. The other enters the LED board 4 and the constant current circuit 53 that converts the DC voltage output from the rectifier circuit 51 into a required DC voltage, and the LED 3 is turned on / off.

  Next, FIG.5 (c) is a modification in the case of the 2nd illuminating device. The difference from FIG. 5B is that the power transmission side coil 12 enters the power transmission circuit 54 and then the power transmission side coil 11 that is the primary side induction coil. The power transmission circuit 54 is a circuit for performing impedance conversion, amplification, and the like when entering the power transmission side coil 11 from the power reception side coil 12. On the other hand, the circuit from the rectifier circuit 51 to the LED substrate 4 via the constant current circuit 53 is the same as FIG. In addition, you may provide the terminal block 7 between the circuits of the power transmission side coil 11 and the rectifier circuit 51 similarly to FIG.5 (b).

  As an example, the arrangement of the first illumination device, the second illumination device, and the 2a illumination device is, as an example, the left illumination device 1X in FIG. When the lighting device 1Y is added to the second lighting device and further to the right side of the second lighting device, the lighting device 1Y is the second lighting device.

  When the first lighting device is turned on (or turned off) by a wall-embedded switch or the like, the second lighting device or the 2a lighting device fed by electromagnetic induction is turned on (or turned off) at the same time. Note that at least one of the first lighting device, the second lighting device, and the second-a lighting device may be provided so that each lighting device can be individually turned on / off by the remote controller.

  Note that the lighting device 1 that has received the last power of the plurality of lighting devices 1 that sequentially repeats power feeding and power receiving does not have the next lighting device, and therefore does not require a power feeding circuit. The inverter circuit 52 and the power transmission side The coil 11 is not necessary, and the wiring to the inverter circuit 52 or the wiring to the power transmission side coil 11 is cut at the time of installation without dividing the current, so that no current flows through the power transmission side coil 11. Accordingly, a current flows only on the other constant current circuit 53 side branched. In addition, although the method which does not cut | disconnect the wiring to the inverter circuit 52 and the power transmission side coil 11 is also possible, in this case, an induction current will generate | occur | produce in the power transmission side coil 11, and electric power consumption will generate | occur | produce. About the above, since it is the method for making the lighting device into the lighting device of the structure using the 1st lighting device, the 2nd lighting device, the 2a lighting device, etc. using a common part, it does not make a part common. If present, a structure in which components such as the inverter circuit and the power transmission side coil 11 are omitted may be employed.

  Although a voltage of about 100 V is applied to the wiring of the commercial power source, driving the LED 3 does not require a very high voltage, and a rectifier circuit 51 that is an AC-DC converter that is a power supply unit inside the lighting device 1. Therefore, it is only necessary to supply power sufficient to be converted into appropriate DC power.

  FIG. 6A is a perspective view in which a power transmission side coil 11 for electromagnetic induction is placed inside the side cover 10 of the present application. FIG. 6B is a perspective view in which a power receiving coil 12 for electromagnetic induction is placed inside the side cover 10 of the present application. The power receiving side coil 12 and the power transmitting side coil 11 are provided in the center of the arc-shaped end face of the side cover 10 made of an insulating resin material, and are arranged so that the circular end face of the laminated coil is in contact with the end face. As an example, the laminated coil is inserted and fixed to an opening (not shown) formed in a cylindrical shape at the inner center of the end surface of the side cover 10 according to the outer shape of the laminated coil wound in a cylindrical shape. . A coil matched to the inner diameter of the opening is inserted in the center of the side cover 10 in such a manner that wires are laminated in a coil shape so that electromagnetic induction occurs.

  As an example, a cylindrical coil of a cylindrical laminated coil has an outer diameter of about 40 mm, a winding number of 100 to 200 turns, and a copper wire coated with enamel having a wire diameter of about 0.5 mm. The diameter, number of turns, wire diameter, material, etc. of the coil are not limited to this, and may be changed as appropriate. The shape of the laminated coil is not circular, but may be a square or the like.

  FIG. 7 is a layout diagram when two lighting devices 1 are brought close to each other and fed by electromagnetic induction. In FIG. 7A, the lighting device 1 using the side cover 10 provided with a coil is arranged close to each other, and electromagnetic induction is performed by the coil from the left lighting device 1 to the right lighting device 1 in the drawing. FIG. In this case, a laminated coil is provided inside the right side cover 10 of the left illuminating device 1 as shown in the drawing, and a laminated coil is provided inside the left side cover 10 of the right illuminating device 1 as shown in the drawing. Although not shown, in the case of proximity, it is preferable to suppress the attenuation of electromagnetic induction by bringing the side surfaces of the side covers 10 closer to each other within 5 mm as an example. In addition, contact | abutting makes the side surfaces of the side covers 10 contact about 0 mm. In the present application, contact is also included in the vicinity. FIG. 7B is a diagram in which three units of the left side lighting device 1, the center lighting device 1, and the right side lighting device 1 are brought close to each other as viewed in the figure. As an example, the left side lighting device 1, the center lighting device 1, and the right side lighting device 1 are arranged as a first lighting device, a second lighting device, and a 2a lighting device, respectively, and electromagnetic induction by a coil is performed. Repeats feeding and receiving.

  FIG. 8 shows a second embodiment of the present application. As an example, the AC power supply device 100 has a rectangular outer shape, and the lighting device 1 is brought into contact with each of the four sides of the square. The alternating current power supply apparatus 100 includes a power transmission side coil 11 that is a power transmission side coil inside each end of four sides of a square casing, and this is a first lighting device. The lighting device 1 having a rectangular housing in a cross shape is brought close to this, and this is used as a second lighting device. The lighting device 1 is provided with a power receiving side coil 12 that is a power receiving side coil at an end inside the side cover 10 of the lighting device 1 that is close to the AC power supply device 100. The AC power supply device 100 may include only the power transmission side coil 11 without providing the lighting device, and may be limited to AC power supply. Furthermore, it is good also as a 1st illuminating device provided with the illumination of LED3 or having the structure of Fig.5 (a). A system that supplies power and receives power from the AC power supply apparatus 100 to the second lighting apparatus may be used as the lighting system. Further, a second lighting device, a second lighting device, and the like may be provided by placing the next lighting device close to the second lighting device and repeating power feeding and power reception by electromagnetic induction by a coil.

  The casing is not only the quadrangular shape of FIG. 8 but also a polygonal shape, and a power feeding device provided with a power transmission side coil at each end of each polygon is provided. One or more LED illumination devices provided in the side cover 10 may be provided and arranged radially.

  In FIG. 5, when a core wire of a power line from a commercial power source (for example, a VVF cable for indoor wiring) is connected to the connection terminal block 7, a current flows in the unused power receiving side coil 12. It is also possible to perform automatic switching so that no current flows in the power receiving coil 12 by replacing the core wire so that there is no current or by connecting the core wire of the power supply line.

  The coil may be arranged so that the second illumination device and the second illumination device are placed on both sides with the first illumination device at the center. In addition, although arrangement | positioning of the coil was provided in the internal center of the end surface of the side covers 10 and 10, it is not limited to the internal center of an end surface. In addition, although the surface mount type LED illumination was used for the illuminating device, a bullet type LED, a straight tube type LED, or the like may be used. In this invention, although LED was used for the illuminating device 1, it is not limited to this.

  In the above-described embodiment, the lighting device 1 having a rectangular housing has been described. However, the shape of the housing of the lighting device 1 is not limited to a rectangle, but a so-called square or circular shape. It may be.

  In addition, although an Example is an example for indoor use, it is good also as a structure which provided the waterproof means, and can also be installed outdoors.

  In addition, in order to raise the efficiency of a laminated coil, you may penetrate the inner side of the power transmission side coil 11 and the power receiving side coil 12 with the iron core on a cylinder, and may suppress attenuation | damping of electromagnetic induction. Specifically, when the side surfaces of the side covers 10 are brought close to each other, the iron core passes through the centers of both the primary side induction coil that is the power receiving side coil 12 and the secondary side induction coil that is the power transmission side coil 11. The length is such that it extends to the outside of the laminated coil. The outer diameter of the iron core is made smaller than the inner diameter of the laminated coil. As an example, the side cover 10 is provided with an opening slightly larger than the outer diameter of the iron core and a lid for closing the opening. Furthermore, a cylindrical protrusion is vertically provided on the surface around the opening inside the side cover 10 at a height of about 15 mm, and is elongated in the longitudinal direction of the iron core. When the iron core is inserted, the iron core is stabilized and temporarily fixed. To be able to. After the installation, an insulating adhesive is applied to the gap between the side cover 10 of the first lighting device and the iron core of the side cover 10 of the second lighting device and the surrounding area to fix and waterproof the iron core. When an iron core is not used, a cylindrical lid is pressed into the opening to cover it, and a cover is provided so that the outside of the lid is flush with the outer surface of the side cover 10.

According to the above, it is possible to easily connect and add lighting devices having a rectangular shape or the like.
In addition, since the distance between the electrical appliance and the lighting device is increased by using it for ceiling mounting equipment or wall mounting equipment, the electrical equipment is not easily affected by electromagnetic induction interference, and there is also a danger to human touch. Few.

  Note that in FIG. 7, the case where two illuminating devices having a rectangular housing shape are close to each other in the longitudinal direction, but the two illuminating devices may be L-shaped, T-shaped, or the like. Alternatively, in FIG. 7, two illuminating devices having a rectangular housing shape are close to each other in the longitudinal direction, but two illuminating devices may be close to each other in the short direction. In this case, the shape of the induction coil is set to a circular shape or a shape other than a circular shape, and is placed inside the housing of each lighting device, and the power reception side coil 12 and the power transmission side coil 11 are brought close to each other and fed by electromagnetic induction.

  In FIG. 3, the LED substrates 4 have a long and narrow linear shape and are arranged in one row, but may be arranged in a plurality of rows. Or you may make the LED board 4 into shapes, such as a square and a circle.

  On the other hand, LED illumination has a very long life compared to a fluorescent lamp using a fluorescent tube or the like because the LED has a life of about 40,000 hours. Furthermore, in the case of the LED lighting device of the present invention, there is a permissible width of lighting in a predetermined range of fluctuation of the commercial voltage.

  Embodiment described above is an example in implementing this invention to the last, and this invention is not limited to them. Aspects obtained by appropriately combining known technical techniques with the technical means disclosed in the above-described embodiments are also included in the technical scope of the present invention.

1,1X, 1Y Lighting device 2 Base frame 3 LED
DESCRIPTION OF SYMBOLS 4 LED board 5 Case 8 Diffusion panel 9 Center cover 10 Side cover 11 Power transmission side coil 12 Power receiving side coil 51 Rectifier circuit 52 Inverter circuit 53 Constant current circuit 54 Power transmission circuit 100 AC power supply device

Claims (4)

An illumination device using LEDs,
The lighting device supplies a direct current converted by a rectifier circuit, a rectifier circuit that converts commercial power to direct current, an inverter circuit that returns direct current to alternating current, a power transmission coil provided inside the housing end, and the rectifier circuit. A lighting device comprising a constant current circuit that is stabilized in order to achieve the above. An illumination device using LEDs,
The lighting device includes a power receiving side coil provided inside the housing end, a rectifier circuit that converts alternating current received by the power receiving side coil into direct current, an inverter circuit that returns direct current to alternating current, and a housing end. An illuminating device comprising: a provided power transmission side coil; and a constant current circuit for stabilizing a current to supply a direct current converted by a rectifier circuit to an LED. An illumination device using LEDs,
The lighting device is received by the power receiving side coil provided inside the housing end, the power transmitting side coil provided inside the housing end for passing alternating current received by the power receiving side coil, and the power receiving coil. An illuminating device comprising: a rectifier circuit that converts alternating current into direct current; and a constant current circuit that stabilizes current in order to supply the direct current converted by the rectifier circuit to an LED. An illumination system using LEDs having a first illumination device and a second illumination device,
The first lighting device has a power transmission side coil provided at an end of the housing,
The second illuminating device supplies a power receiving side coil provided at an end of the housing, a rectifier circuit that converts alternating current received by the power receiving side coil into direct current, and direct current converted by the rectifier circuit to the LED. Has a constant current circuit to stabilize the current,
An illumination system, wherein power is supplied from the power transmission side coil to the power reception side coil by electromagnetic induction.