JP5999328B2 - Contactless power supply system for lighting - Google Patents

Contactless power supply system for lighting Download PDF

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JP5999328B2
JP5999328B2 JP2012156657A JP2012156657A JP5999328B2 JP 5999328 B2 JP5999328 B2 JP 5999328B2 JP 2012156657 A JP2012156657 A JP 2012156657A JP 2012156657 A JP2012156657 A JP 2012156657A JP 5999328 B2 JP5999328 B2 JP 5999328B2
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power
coil
non
power transmission
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JP2014023179A (en
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明 中城
明 中城
城戸 大志
大志 城戸
ナッダー チャワーラーラット
ナッダー チャワーラーラット
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パナソニックIpマネジメント株式会社
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Description

  The present invention relates to a non-contact power feeding system for illumination.

  In recent years, the thing regarding the non-contact electric power feeding system for illumination has been proposed (for example, patent documents 1). Patent Document 1 describes an LED lighting device that performs non-contact power transmission to a plurality of light emitting devices. In Patent Document 1, an LED lighting device includes a disk-shaped base, a power supply device provided in the base, a disk-shaped pedestal fixed to the upper surface of the base, and a concave surface on the surface of the pedestal. It describes that it has a plurality of fitting recesses provided and a plurality of light emitting devices that are detachably fitted and fixed to the plurality of fitting recesses. Patent Document 1 describes that the power feeding device supplies alternating power to the primary coil disposed on the base. Patent Document 1 describes that each light-emitting device includes a secondary coil, a capacitor, a circuit unit, and a light-emitting diode.

  Conventionally, a power supply system that can supply power to a plurality of electronic devices wirelessly has been proposed (for example, Patent Document 2). In Patent Document 2, as shown in FIG. 7, by arranging a plurality of electronic devices 71 to 73 on the power supply surface 70 a of one power supply support structure 70, power is supplied to the plurality of electronic devices 71 to 73. It is described that can be supplied.

JP 2011-50163 A Special table 2010-520741 gazette

  By the way, in the LED lighting device disclosed in Patent Document 1, when power is transmitted to a plurality of light emitting devices (power receiving devices) in a non-contact manner, the plurality of light emitting devices are provided with a plurality of fittings recessed in the surface of the base. It is necessary to fit and fix in the recess.

  In the power supply system disclosed in Patent Document 2, when power is supplied wirelessly to a plurality of electronic devices 71 to 73 (power receiving devices), the plurality of electronic devices 71 to 73 are connected to the power supply support structure 70 ( What is necessary is just to arrange | position on the electric power supply surface 70a of a power transmission apparatus.

  However, in the above-described power supply system, when power is wirelessly supplied to the plurality of electronic devices 71 to 73, the plurality of electronic devices 71 to 73 are disposed on the power supply surface 70a of the power supply support structure 70, respectively. There is a need. Therefore, in the above-described power supply system, it is necessary to enlarge the power supply surface 70a, and it is difficult to save the space of the power supply support structure 70.

  The present invention has been made in view of the above-described reason, and the object thereof is a non-contact power feeding system for illumination that can save space in a power transmitting device even when power is supplied to a plurality of power receiving devices. Is to provide.

A non-contact power feeding system for illumination according to the present invention receives power from a first unit that is a power transmission device having a first power transmission coil and contactlessly from the first power transmission coil by electromagnetic induction caused by a magnetic field generated in the first power transmission coil. A second unit having a first power receiving coil and a second power transmitting coil capable of inputting an output of the first power receiving coil; and non-magnetic from the second power transmitting coil by electromagnetic induction by a magnetic field generated by the second power transmitting coil. A third unit having a second power receiving coil capable of receiving power by contact, wherein the second unit can light the first light source unit and the first light source unit based on the output of the first power receiving coil. A lighting apparatus including a first lighting device, wherein a power feeding unit in which the second power transmission coil is disposed is provided in a part of the second unit, and the third unit feeds the third unit to the power feeding. Part By placing a possible feed in a non-contact from the second transmission coil, the second unit has a first battery which can be charged by the output of the first power receiving coil, said second power transmitting coil At least one of the first lighting device is supplied with power from the first battery when not supplied with power from the first power receiving coil, and the second unit has a first power supply path connected to the first power receiving coil, and A second power feeding path branched from the first power feeding path, and the second unit transmits the voltage generated in the first power receiving coil through the first power feeding path without frequency conversion. And a voltage generated by the first power receiving coil is applied to the first battery and the first lighting device via the second power feeding path .

  In this non-contact power supply system for illumination, it is preferable that the third unit can be arranged so as to be shifted from the power supply unit within a range in which power can be supplied in a non-contact manner from the second power transmission coil.

  In this non-contact power supply system for illumination, the second unit has an inverter circuit unit capable of inputting at least one of a voltage obtained by rectifying and smoothing the output of the first power receiving coil and an output voltage of the first battery. The inverter circuit unit preferably feeds power to the second power transmission coil.

  In this non-contact power supply system for illumination, it is preferable that the second unit includes a plurality of the second power transmission coils, and the power transmission unit includes the second power transmission coils arranged in an array.

  In this illumination non-contact power feeding system, it is preferable that the second power transmission coil moves to a position where power can be fed to the second power receiving coil when the third unit is placed on the power feeding unit.

  In the illumination non-contact power supply system, the third unit includes a second lighting device capable of lighting the second light source unit based on outputs of the second light source unit and the second power receiving coil, and the second power receiving coil. It is preferable to have at least one of the 2nd battery which can be charged with the said output.

  In this non-contact power supply system for illumination, it is preferable that at least one of the first light source unit and the second light source unit has an LED element or an organic electroluminescence element.

  In this non-contact power supply system for illumination, the second unit includes an umbrella-shaped lamp unit provided with a flat surface on which the first light source unit can be placed and on which the third unit can be placed, and one end of the lamp unit. And a box-like base that holds the other end of the arm, and the first power receiving coil is on the opposite side of the base from the lamp part. It is preferable that the second power transmission coil is disposed on at least one of the lamp part side of the base part and the side opposite to the base part side of the lamp part.

  In the non-contact power feeding system for illumination according to the present invention, even when power is supplied to a plurality of power receiving devices, it is possible to save the space of the power transmitting device.

It is a schematic block diagram of the non-contact electric power feeding system for illumination of Embodiment 1. It is a schematic perspective view of the non-contact electric power feeding system for illumination same as the above. It is a schematic circuit diagram of the non-contact electric power feeding system for illumination same as the above. The schematic block diagram of the non-contact electric power feeding system for illumination of Embodiment 2 is shown, (a) is a top view, (b) is a front view, (c) is a left view. It is a schematic circuit diagram of the non-contact electric power feeding system for illumination same as the above. It is a schematic perspective view of the non-contact electric power feeding system for illumination of Embodiment 3. It is explanatory drawing which shows the state by which various kinds of electronic devices were mounted in the power supply system of a prior art example.

(Embodiment 1)
Hereinafter, the non-contact power supply system for illumination according to the present embodiment will be described with reference to FIGS.

  The non-contact power feeding system 1 for illumination according to the present embodiment includes a first unit 6 that is a power transmission device having a first power transmission coil 5. In addition, the non-contact power feeding system 1 for illumination includes outputs of the first power receiving coil 7 and the first power receiving coil 7 that can receive power from the first power transmitting coil 5 in a non-contact manner by electromagnetic induction caused by a magnetic field generated in the first power transmitting coil 5. Is provided with a second unit 9 having a second power transmission coil 8. Further, the illumination non-contact power feeding system 1 includes a third unit 11 having a second power receiving coil 10 that can receive power from the second power transmitting coil 8 in a non-contact manner by electromagnetic induction caused by a magnetic field generated by the second power transmitting coil 8. ing. In the present embodiment, the second unit 9 includes a plurality of second power transmission coils 8 (in the present embodiment, n: n ≧ 2).

  The first unit 6 includes the first power transmission coil 5 described above and a high frequency power supply unit 4 (see FIG. 3) that applies a high frequency voltage (hereinafter referred to as a first high frequency voltage) to the first power transmission coil 5. The first unit 6 also generates a DC voltage from the first rectification unit 2 (see FIG. 3) that rectifies an AC voltage from the commercial power supply AC (see FIG. 3) and the voltage rectified by the first rectification unit 2. DC power supply unit 3 (see FIG. 3). Here, the high frequency power supply unit 4 generates a first high frequency voltage from the DC voltage generated by the DC power supply unit 3. In the present embodiment, the commercial power source AC is not included as a configuration requirement. In FIG. 1, the high frequency power supply unit 4, the first rectification unit 2, and the DC power supply unit 3 are illustrated as one power supply circuit unit 16.

  The first unit 6 includes a first main body 18 that can accommodate the first power transmission coil 5 and the power supply circuit unit 16.

  The 1st main-body part 18 is formed in the flat box shape. The planar view shape of the first main body 18 is circular. As a material of the first main body 18, for example, a resin material can be employed. Inside the first main body portion 18, the first power transmission coil 5 and the power supply circuit portion 16 are arranged. In addition, in this embodiment, although the planar view shape of the 1st main-body part 18 is made into circular shape, this shape is not specifically limited.

  As the 1st power transmission coil 5, the coil etc. which were formed in the spiral shape are employable, for example. In this embodiment, although the shape of the 1st power transmission coil 5 is made into the spiral shape, it is not restricted to this, For example, a spiral shape etc. may be sufficient.

  The 1st power transmission coil 5 is arrange | positioned in the center part of the one surface side (FIG. 1 upper surface side) of the 1st main-body part 18. As shown in FIG. In the present embodiment, the number of turns of the first power transmission coil 5 is not particularly limited.

  The power supply circuit unit 16 is electrically connected to the first power transmission coil 5 via the first connection line 51. The power supply circuit unit 16 is electrically connected to the power cord 36. The power cord 36 is led out from the other surface side (the lower surface side in FIG. 1) of the first main body 18. A power plug 37 is connected to the power cord 36. Further, the power cord 36 is provided with a first switch SW1 for turning on / off the power supply to the power circuit section 16. In other words, the power cord 36 is provided with a first switch SW1 for turning on / off the power supply to the first unit 6. In the present embodiment, the power cord 36 is led out from the other surface side of the first main body 18, but this is not particularly limited.

  Here, in the present embodiment, the first unit 6 is embedded in the top plate 38 a of the desk 38. In the present embodiment, a part of the power cord 36 is embedded in the top plate 38a. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, since it is not necessary to install the 1st unit 6 on the top plate 38a of the desk 38, it can utilize effectively the work area | region on the top plate 38a. It becomes possible. In the present embodiment, for example, an area where the first unit 6 is arranged on the top plate 38a is arranged so that a person can visually recognize the position of the first unit 6 embedded in the top plate 38a of the desk 38. Surrounding lines may be drawn. In the present embodiment, the first unit 6 is embedded in the top plate 38a of the desk 38, but the place to be embedded is not limited to this place.

The second unit 9 is a lighting fixture (for example, a desk lamp). The second unit 9 is based on the output of the first power receiving coil 7, the first light source unit 19 having a plurality of (four in the present embodiment) LED elements 20, and the first power receiving coil 7. The 1st lighting device 17 (refer FIG. 3) which can light the 1st light source part 19 is provided. The second unit 9 includes the plurality of second power transmission coils 8 described above. Hereinafter, in the present embodiment, for convenience of explanation, the plurality of second power transmission coils 8 may be described as a plurality of second power transmission coils 8 1 to 8 n . In FIG. 1, two of the four LED elements 20 are visible. In FIG. 1, the first lighting device 17 is illustrated as a power supply circuit unit 30.

  The second unit 9 includes a lamp unit 31 having the first light source unit 19, an arm unit 32 having one end (upper end in FIG. 1) connected to the lamp unit 31, and the other end of the arm unit 32. And a base 33 that holds the lower end (in FIG. 1).

  The lamp unit 31 is formed in an umbrella shape, for example. The lamp unit 31 is provided with a flat surface 31a (see FIG. 2) on which the third unit 11 can be placed. As a material of the lamp unit 31, for example, a resin material can be used. In the present embodiment, for example, ASA (Acrylonitrile Styrene Acrylate) resin is used as the material of the lamp unit 31.

  A plate-like (in this embodiment, disc-like) panel 34 is disposed in the opening of the lamp unit 31.

  The panel 34 is formed of a translucent material (for example, milky white acrylic resin, glass, or the like). On the one surface side of the panel 34 (the upper surface side in FIG. 1), the first light source unit 19 described above is arranged. In the present embodiment, one LED element 20 is electrically connected to one mounting substrate 35 that mounts the LED element 20 on one surface side (the lower surface side in FIG. 1). That is, in the present embodiment, the first light source unit 19 has four mounting boards 35.

  As the mounting substrate 35, for example, a printed wiring board formed of an insulating base material made of glass epoxy resin or the like can be employed. In the present embodiment, a printed wiring board is used as the mounting board 35. However, the present invention is not limited to this. For example, a ceramic board, a metal-based printed wiring board, or the like may be used.

  Each of the mounting boards 35 is arranged at an equal interval from the panel 34. In addition, the above-described power supply circuit unit 30 is disposed on the side opposite to the one surface side of each mounting substrate 35 (the upper surface side in FIG. 1).

  The power supply circuit unit 30 is electrically connected to each mounting substrate 35 via the second connection line 52. In the present embodiment, the connection relationship of each LED element 20 is a series connection (see FIG. 3), but is not limited thereto, and may be a parallel connection, for example, or a combination of a series connection and a parallel connection. It may be a connection.

  Here, in the present embodiment, one LED element 20 is mounted on one mounting board 35, but the present invention is not limited to this. For example, four LED elements 20 are mounted on one mounting board 35. May be. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, as the 1st light source part 19, for example, the some LED element 20 and the one mounting board | substrate with which these some LED element 20 was mounted, An LED unit having can be used.

  In the present embodiment, as the first light source unit 19, for example, a surface emitting light by combining a plurality of LED elements 20 and a light guide plate that guides light emitted from the plurality of LED elements 20 is used. A light emitting unit or the like may be used. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to achieve thickness reduction of the lamp part 31. FIG.

  The arm part 32 is formed, for example, in a cylindrical shape (in this embodiment, a cylindrical shape). As a material of the arm part 32, for example, a resin material or the like can be employed.

  The one end of the arm portion 32 is connected to the central portion of the panel 34. A central portion of the panel 34 is provided with a first through hole (not shown) for communicating the interior of the lamp portion 31 and the interior of the arm portion 32. The one end portion of the arm portion 32 is connected to the center portion of the panel 34 so as to cover the first through hole of the panel 34.

  In addition, in this embodiment, although the shape of the arm part 32 is made into cylindrical shape, it is not restricted to this, For example, square tube shape etc. may be sufficient.

  The base portion 33 is formed in a flat box shape. The planar view shape of the base portion 33 is a circular shape. As a material of the base portion 33, for example, a resin material or the like can be adopted. In the present embodiment, the planar size of the base portion 33 is set smaller than the planar size of the first main body portion 18 of the first unit 6, but is set to the same size as the planar size of the first main body portion 18. May be. In addition, in this embodiment, although the planar view shape of the base part 33 is made into circular shape, this shape is not specifically limited.

  The other end portion of the arm portion 32 is connected to a central portion on one surface side (the lamp portion 31 side) of the base portion 33. Further, a second through hole (not shown) for communicating the inside of the arm portion 32 and the inside of the base portion 33 is provided in the central portion of the base portion 33 on the lamp portion 31 side. The other end portion of the arm portion 32 is connected to the central portion of the base portion 33 on the lamp portion 31 side so as to cover the second through hole of the base portion 33.

  The first power receiving coil 7 is disposed inside the base portion 33. In the present embodiment, the first power receiving coil 7 is disposed at the center of the base portion 33 on the opposite side (the lower surface side in FIG. 1) from the lamp portion 31 side. In short, the first power receiving coil 7 is disposed on the opposite side of the base portion 33.

  As the 1st receiving coil 7, the coil etc. which were formed in the spiral shape are employable, for example. In the present embodiment, the shape of the first power receiving coil 7 is a spiral shape, but is not limited thereto, and may be a spiral shape, for example.

  The first power receiving coil 7 is electrically connected to the power supply circuit unit 30 via the third connection line 53. In the present embodiment, the third connection line 53 is disposed inside the arm portion 32. In the present embodiment, the number of turns of the first power receiving coil 7 is not particularly limited.

  As the 2nd power transmission coil 8, the coil etc. which were formed in the spiral shape are employable, for example. In this embodiment, although the shape of the 2nd power transmission coil 8 is made into the spiral shape, it is not restricted to this, For example, a spiral shape etc. may be sufficient. In the present embodiment, the number of turns of each second power transmission coil 8 is not particularly limited.

  By the way, in the non-contact electric power feeding system 1 for illumination of this embodiment, a plurality (six in this embodiment) of the second power transmission coils 8 are connected to the lamp unit 31 side (in FIG. 1, the upper surface side). ). More specifically, the six second power transmission coils 8 are formed on the base portion 33 around the central axis B1 (see FIG. 1) of the base portion 33 around the lamp portion 31 side. 33 are arranged at equal intervals in the circumferential direction. Each of the second power transmission coils 8 is electrically connected to the power supply circuit unit 30 via a fourth connection line (not shown). In FIG. 1, two of the six second power transmission coils 8 are visible. Moreover, in this embodiment, although the number of the 2nd power transmission coils 8 arrange | positioned at the peripheral part by the side of the lamp | ramp part 31 of the base part 33 is set to six pieces, this number is not limited.

  Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, a plurality (seven in this embodiment) of the second power transmission coils 8 are on the side opposite to the base portion 33 side of the lamp portion 31 (FIG. 1). Then, it is arranged on the upper side. The plurality of second power transmission coils 8 are arranged in an array. Each of the second power transmission coils 8 is electrically connected to the power supply circuit unit 30 via the fourth connection line 55. In FIG. 1, three second power transmission coils 8 out of the seven second power transmission coils 8 are visible. Moreover, in this embodiment, although the number of the 2nd power transmission coils 8 arrange | positioned on the said opposite side of the lamp part 31 is seven, this number is not specifically limited.

  Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, the electric power feeding in which a plurality of (six in this embodiment) second power transmission coils 8 are arranged on the peripheral portion of the base portion 33 on the lamp unit 31 side. A portion 39 is provided. Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, the electric power feeding part 39 which has arrange | positioned the 2nd power transmission coil 8 of multiple (seven in this embodiment) on the said opposite side of the lamp part 31 is provided. ing. In short, in the present embodiment, a power feeding unit 39 in which the second power transmission coil 8 is arranged is provided in a part of the second unit 9. Hereinafter, in the present embodiment, for convenience of explanation, the power feeding part 39 provided on the peripheral part of the base part 33 on the lamp part 31 side is referred to as the first power feeding part 39 a and the power feeding part provided on the opposite side of the lamp part 31. 39 may be referred to as a second power feeding unit 39b.

  In the non-contact power feeding system 1 for illumination according to the present embodiment, the plurality of second power transmission coils 8 are arranged in the first power feeding unit 39 a of the base unit 33. If it is on 1 power supply part 39a, even if it mounts in arbitrary places, it will become possible to supply electric power and it will become possible to raise the freedom degree of the mounting place of the 3rd unit 11. Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, since the several 2nd power transmission coil 8 is arrange | positioned at the 2nd electric power feeding part 39b of the lamp part 31 in the array form, the 3rd unit 11 is made into a lamp part. If it is on the 2nd electric power feeding part 39b of 31 (flat surface 31a), even if it mounts in arbitrary places, it will become possible to supply electric power, and it will become possible to raise the freedom degree of the mounting place of the 3rd unit 11.

  Here, in the present embodiment, the plurality of second power transmission coils 8 are arranged in both the first power feeding part 39a of the base part 33 and the second power feeding part 39b of the lamp part 31, Not limited to this, it may be arranged at least one of the first power supply unit 39 a of the base unit 33 and the second power supply unit 39 b of the lamp unit 31. In short, the plurality of second power transmission coils 8 may be arranged on at least one of the lamp unit 31 side of the base unit 33 and the opposite side of the lamp unit 31.

  In the present embodiment, a plurality of second power transmission coils 8 are arranged in an array on the opposite side of the lamp unit 31, but the present invention is not limited to this, and one second power transmission coil 8 is disposed on the opposite side of the lamp unit 31. 2 When the second power transmission coil 8 is arranged and the third power transmission coil 8 is placed on the second power supply unit 39b of the second unit 9, the second power transmission coil 8 is placed at a position where power can be supplied to the second power reception coil 10. It may be moved. In other words, in the present embodiment, a so-called coil array system is adopted as a method of magnetically coupling the second power transmission coil 8 and the second power reception coil 10, but not limited to this, a moving coil system is employed. May be. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to suppress the relative position shift of the 2nd power transmission coil 8 and the 2nd power receiving coil 10, and the transmission efficiency of electric power falls. Can be suppressed. In the present embodiment, when the moving coil method is employed as a method of magnetically coupling the second power transmission coil 8 and the second power reception coil 10, for example, the configuration disclosed in JP 2010-263663 A In addition, a position detection controller (not shown) for detecting the position of the induction coil (second power receiving coil 10) and the position of the power coil (second power transmission coil 8) are the positions of the induction coil (second power receiving coil 10). A configuration having a moving mechanism (not shown) for moving to a position may be adopted.

  Moreover, in this embodiment, although the several 2nd power transmission coil 8 is arrange | positioned at the lamp part 31 side of the base part 33, the one 2nd power transmission coil 8 is arrange | positioned, and this 2nd power transmission coil A moving coil method may be adopted as a method of magnetically coupling the power receiving 8 and the second power receiving coil 10. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to suppress the relative position shift of the 2nd power transmission coil 8 and the 2nd power receiving coil 10, and the transmission efficiency of electric power falls. Can be suppressed.

  In this embodiment, as a method of magnetically coupling the first power receiving coil 7 of the second unit 9 and the first power transmitting coil 5 of the first unit 6, a coil array method may be adopted, or a moving coil method May be adopted. Thereby, in the non-contact electric power feeding system 1 for illumination according to the present embodiment, electric power can be supplied even if the second unit 9 is placed on an arbitrary place as long as it is on the one surface side of the first main body portion 18 of the first unit 6. The degree of freedom of the place where the second unit 9 is placed can be increased.

  The third unit 11 is, for example, another lighting fixture different from the second unit 9. The third unit 11 includes a second light source unit based on the output of the second power receiving coil 10 and the second light source unit 26 (see FIG. 3) having the above-described second power receiving coil 10 and one LED element 20. And a second lighting device 27 (see FIG. 3) capable of lighting 26. In the present embodiment, the number of the LED elements 20 of the second light source unit 26 is one, but a plurality of LED elements 20 may be used.

  The third unit 11 includes a second main body 40 that can accommodate the second power receiving coil 10, the second light source unit 26, and the second lighting device 27. The 2nd main-body part 40 is formed in box shape (in this embodiment, rectangular box shape), for example. As a material of the second main body portion 40, for example, a translucent material or the like can be used. As the translucent material, for example, milky white acrylic resin or glass may be employed. In FIG. 1, illustration of the second light source unit 26 and the second lighting device 27 is omitted.

  As the 2nd receiving coil 10, the coil etc. which were formed in the spiral shape are employable, for example. In the present embodiment, the shape of the second power receiving coil 10 is a spiral shape, but is not limited thereto, and may be a spiral shape, for example. In the present embodiment, the number of turns of the second power receiving coil 10 is not particularly limited.

  The second power receiving coil 10 is disposed on one surface side (the lower surface side in FIG. 1) of the second main body portion 40. The second power receiving coil 10 is electrically connected to the second lighting device 27 via a fifth connection line (not shown).

  By the way, the 2nd main-body part 40 should just be the structure which has the light extraction surface which takes out the light from the 2nd light source part 26 in surfaces other than the said one surface of this 2nd main-body part 40. If an example is given, the 2nd main-body part 40 should just be the structure which has the said light extraction surface in the other surface (upper surface in FIG. 1) on the opposite side to the said one surface of this 2nd main-body part 40. FIG. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, the 3rd unit 11 is mounted in the 2nd electric power feeding part 39b of the 2nd unit 9, and the light from the 2nd light source part 26 is 2nd. It can be taken out to the side opposite to the unit 9 side (upper side in FIG. 1).

  Hereinafter, each structure of the non-contact electric power feeding system 1 for illumination of this embodiment is demonstrated in detail based on FIG.

  The first unit 6 includes the first power transmission coil 5 described above, the high-frequency power supply unit 4 described above, the first rectification unit 2 described above, and the DC power supply unit 3 described above. In the present embodiment, as described above, the commercial power source AC is not included as a configuration requirement.

  As the high frequency power supply unit 4, for example, a full bridge type inverter circuit or the like can be employed. A first power transmission coil 5 is connected between the pair of output terminals of the high-frequency power supply unit 4. In the present embodiment, a full bridge type inverter circuit is employed as the high frequency power supply unit 4. However, the present invention is not limited to this. For example, a flyback type inverter circuit, a half bridge type inverter circuit, a forward type An inverter circuit, a push-pull type inverter circuit, or the like may be employed.

  As the first rectification unit 2, for example, a diode bridge constituted by four diodes can be employed. A commercial power supply AC is connected between the pair of input terminals of the first rectification unit 2. A pair of input terminals of the DC power supply unit 3 are connected to a pair of output terminals of the first rectifying unit 2. In the present embodiment, the above-described first switch SW1 for turning on / off the power supply to the first unit 6 in the power supply path between one of the pair of input ends of the first rectification unit 2 and the commercial power supply AC. Is provided.

  As the DC power supply unit 3, for example, a DC / DC converter circuit that converts the voltage rectified by the first rectification unit 2 into a predetermined DC voltage can be employed. A pair of input terminals of the high frequency power supply unit 4 are connected to a pair of output terminals of the DC power supply unit 3. In the present embodiment, a DC / DC converter circuit is employed as the DC power supply unit 3. However, the present invention is not limited to this, and for example, a smoothing capacitor that smoothes the voltage rectified by the first rectification unit 2. May be adopted.

The second unit 9 includes the first power receiving coil 7 described above, a plurality (in the present embodiment, n: n ≧ 2) of the second power transmitting coils 8 1 to 8 n described above, and a plurality (the present embodiment). Then, n + 1 elements: n ≧ 2) switching elements Q 0 to Q n are provided. The second unit 9 includes a first rectifying / smoothing unit 12 that rectifies and smoothes the voltage (high-frequency voltage) generated in the first power receiving coil 7. In the present embodiment, for example, power MOSFETs are employed as the switching elements Q 0 to Q n . In FIG. 1, the first rectifying / smoothing unit 12 is illustrated as a power supply circuit unit 30.

One end of the first receiving coil 7, through a series circuit of a switching element Q 0 and the switching element Q 1, is connected to the second transmitting coil 81 at one end. More specifically, one end of the first receiving coil 7 is connected to the drain terminal of the switching element Q 0. The source terminal of the switching element Q 0 is connected to the drain terminal of the switching element Q 1. The source terminal of the switching element Q 1 is connected to the second transmitting coil 81 at one end. 1 of the other end second transmitting coil 8 is connected to the other end of the first receiving coil 7.

The source terminal of the switching element Q 0, via the switching element Q n, is connected to one end of the second transmission coil 8 n. More specifically, the source terminal of the switching element Q 0 is connected to the drain terminal of the switching element Q n. The source terminal of the switching element Q n is connected to one end of the second transmission coil 8 n. The other end of the second power transmission coil 8 n is connected to the other end of the first power receiving coil 7.

  The first rectifying / smoothing unit 12 smoothes the voltage rectified by the second rectifying unit 12a and the second rectifying unit 12a that rectifies the high-frequency voltage (hereinafter referred to as second high-frequency voltage) generated in the first power receiving coil 7. And a capacitor C1.

  As the second rectification unit 12a, for example, a diode bridge constituted by four diodes can be employed. In the present embodiment, one of the pair of input ends in the second rectifying unit 12 a is connected to one end of the first power receiving coil 7, and the other is connected to the other end of the first power receiving coil 7. A smoothing capacitor C1 is connected between the pair of output terminals of the second rectifying unit 12a.

  The second unit 9 includes a first battery 14 that can be charged by the output of the first power receiving coil 7, a first charge / discharge circuit unit 13 that can charge and discharge the first battery 14, and an output of the first battery 14. And an inverter circuit unit 15 capable of inputting a voltage. In FIG. 1, the first battery 14, the first charge / discharge circuit unit 13, and the inverter circuit unit 15 are illustrated as a power supply circuit unit 30.

  As the 1st battery 14, a lithium ion battery, a lead acid battery, etc. are employable, for example. The first battery 14 is electrically connected to the first charge / discharge circuit unit 13.

  One of the pair of input terminals in the first charge / discharge circuit unit 13 is connected to the high potential side of the smoothing capacitor C1. The other of the pair of input terminals in the first charge / discharge circuit unit 13 is connected to the low potential side of the smoothing capacitor C1. As a result, the first charge / discharge circuit unit 13 can charge the first battery 14 based on the output of the first rectifying and smoothing unit 12. That is, the first battery 14 can be charged by the output of the first power receiving coil 7.

As the inverter circuit unit 15, for example, a full bridge type inverter circuit or the like can be employed. A pair of input terminals of the inverter circuit unit 15 is connected to a pair of output terminals of the first charge / discharge circuit unit 13. One of the pair of output terminals in the inverter circuit section 15 is connected to the connection point P1 of the source terminal of the switching element Q 0 and the drain terminal of the switching elements Q 1 to Q n. The other of the pair of output ends in the inverter circuit unit 15 is connected to a connection point P2 between the other end of the first power receiving coil 7 and the other end of each of the second power transmitting coils 8 1 to 8 n . Thereby, the inverter circuit unit 15 can apply a high-frequency voltage (hereinafter, a third high-frequency voltage) to each of the second power transmission coils 8 1 to 8 n . Therefore, when the second high frequency voltage generated in the first power receiving coil 7 is not applied to each of the second power transmission coils 8 1 to 8 n , the third high frequency voltage from the inverter circuit unit 15 can be applied. In short, the second power transmission coils 8 1 to 8 n can be fed from the first battery 14 when not fed from the first power receiving coil 7.

  Here, in this embodiment, the effective value of the third high-frequency voltage from the inverter circuit unit 15 is set to the same value as the effective value of the second high-frequency voltage generated in the first power receiving coil 7, but different values are set. May be set. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to supply desired electric power from the 2nd unit 9 to the 3rd unit 11. FIG.

  The effective value of the third high-frequency voltage from the inverter circuit unit 15 may be set smaller than the effective value of the second high-frequency voltage generated in the first power receiving coil 7. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to reduce the power consumption of the 1st battery 14. FIG.

  In the present embodiment, the frequency of the third high-frequency voltage from the inverter circuit unit 15 is set to the same frequency as the frequency of the second high-frequency voltage generated in the first power receiving coil 7, but is set to a different frequency. May be. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to disperse | distribute a frequency and to reduce a noise peak value.

  In the present embodiment, a full-bridge type inverter circuit is employed as the inverter circuit unit 15. However, the present invention is not limited to this. For example, a flyback type inverter circuit, a half-bridge type inverter circuit, a forward type An inverter circuit, a push-pull type inverter circuit, or the like may be employed.

The second unit 9 controls the first light source unit 19, the first lighting device 17, the switching elements Q 0 to Q n , the inverter circuit unit 15, and the first lighting device 17. And a control unit 21. In addition, in this embodiment, although the number of the LED elements 20 of the 1st light source part 19 is made into two or more, one may be sufficient. Moreover, in this embodiment, although the LED element 20 is used for the 1st light source part 19, it is not restricted to this, For example, you may use an organic electroluminescent element, an inorganic electroluminescent element, etc. In FIG. 1, the first control unit 21 is illustrated as a power supply circuit unit 30.

  As the 1st lighting device 17, the stabilized power supply (not shown) which stabilizes the output of the 1st charging / discharging circuit part 13 and outputs it to the 1st light source part 19 is employable, for example.

  The stabilized power source has a constant voltage circuit (not shown) that converts the output voltage (DC voltage) of the first charging / discharging circuit unit 13 to a predetermined DC voltage and outputs the voltage to the first light source unit 19. Yes.

  The pair of input ends of the first lighting device 17 is connected to the pair of output ends of the first charge / discharge circuit unit 13. A first light source unit 19 is connected between the pair of output ends of the first lighting device 17. Accordingly, the first lighting device 17 can light the first light source unit 19 based on the output of the first charge / discharge circuit unit 13. That is, the first lighting device 17 can light the first light source unit 19 with a voltage (DC voltage) obtained by rectifying and smoothing the output of the first power receiving coil 7 or an output voltage (DC voltage) of the first battery 14. It has become. Therefore, the first lighting device 17 can supply power from the first battery 14 when power is not supplied from the first power receiving coil 7.

  Here, in the present embodiment, the voltage value of the output voltage (DC voltage) from the first battery 14 is set to the same value as the voltage value of the output voltage (DC voltage) of the first rectifying and smoothing unit 12. Different values may be set. For example, the voltage value of the DC voltage from the first battery 14 may be set smaller than the voltage value of the DC voltage of the first rectifying and smoothing unit 12. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to reduce the power consumption of the 1st battery 14. FIG.

  Incidentally, it is known that the light output of the LED element 20 is generally proportional to the current flowing through the LED element 20. Further, it is known that the LED element 20 generally has a sharp change in current-voltage characteristics in a normal operation region. Therefore, for example, when the output voltage of the first lighting device 17 fluctuates due to fluctuations in the input voltage of the first lighting device 17, the LED element 20 changes the light output of the LED element 20 or the LED element 20. There is a concern that dielectric breakdown may occur.

  On the other hand, in the non-contact electric power feeding system 1 for illumination of this embodiment, since the said stabilized power supply is employ | adopted as the 1st lighting device 17, there was a fluctuation | variation of the input voltage of the 1st lighting device 17. However, since a predetermined DC voltage can be applied to the first light source unit 19, the light output of each LED element 20 (the light output of the first light source unit 19) can be stabilized. That is, in the illumination non-contact power feeding system 1 of the present embodiment, it is possible to obtain a desired light output from the first light source unit 19.

  In the present embodiment, the stabilized power source includes the constant voltage circuit. However, the present invention is not limited to this, and for example, the output current (DC current) of the first charge / discharge circuit unit 13 is set to a predetermined DC current. May be provided with a constant current circuit that outputs a constant current to the first light source unit 19 or outputs the first charging / discharging circuit unit 13 to a predetermined DC power. You may have the constant power circuit output to the light source part 19. FIG.

The first control unit 21 controls the switching element Q 0 , the inverter circuit unit 15, the first charging / discharging circuit unit 13, and the first lighting device 17, and the switching elements Q 1 to Q n . A second control circuit 21b.

  A power supply terminal (not shown) of the first control circuit 21 a is connected to one of a pair of output ends in the first charge / discharge circuit unit 13. A grounding terminal (not shown) of the first control circuit 21 a is connected to the other of the pair of output ends in the first charge / discharge circuit unit 13. That is, the first control circuit 21 a is operable by the output of the first charge / discharge circuit unit 13.

The first control circuit 21a is electrically connected to the gate terminal of the switching element Q 0. The first control circuit 21 a is electrically connected to the inverter circuit unit 15. Further, the first control circuit 21 a is electrically connected to the first charge / discharge circuit unit 13. The first control circuit 21 a is electrically connected to the first lighting device 17.

  By the way, the 1st control circuit 21a is provided with the 1st detection part (not shown) which detects the output of the 1st receiving coil 7. FIG. The first detection unit is electrically connected to the first charge / discharge circuit unit 13. As a result, the first detection unit can detect the output of the first rectifying / smoothing unit 12 input to the first charge / discharge circuit unit 13. That is, the first detection unit can detect the output of the first power receiving coil 7. Here, in the present embodiment, a first specified value for detecting a decrease in the output of the first power receiving coil 7 is preset in the first control circuit 21a. In the present embodiment, the first detection unit is connected to the first charge / discharge circuit unit 13, but is not limited thereto, and is connected to the high potential side of the smoothing capacitor C <b> 1 in the first rectification smoothing unit 12. May be.

The first control circuit 21a pre-charges the first battery 14 via the first charge / discharge circuit unit 13 when the output of the first power receiving coil 7 detected by the first detection unit is equal to or less than the first specified value. The discharged electric charge is discharged (the first battery 14 outputs a precharged DC voltage). Accordingly, each of the second power transmission coils 8 1 to 8 n and the first lighting device 17 can be fed from the first battery 14 when not fed from the first power receiving coil 7.

  A second switch SW2 for turning on the first light source unit 19 is electrically connected to the first control circuit 21a.

  The first control circuit 21a lights the first light source unit 19 via the first lighting device 17 when the second switch SW2 is in the on state. The first control circuit 21a turns off the first light source unit 19 via the first lighting device 17 when the second switch SW2 is in the OFF state.

  Here, the first control circuit 21a includes the first battery when the output of the first power receiving coil 7 detected by the first detection unit is equal to or lower than the first specified value and the second switch SW2 is in the ON state. The first lighting device 17 is controlled to turn on the first light source unit 19 with the output voltage of 14. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to light the 1st light source part 19 also at the time of emergency, such as the time of the power failure of commercial power supply AC, for example. Therefore, in the non-contact electric power feeding system 1 for illumination of this embodiment, since the 1st light source part 19 can be lighted at the time of emergency, such as at the time of a power failure of commercial power supply AC, for example, it becomes possible to brighten surrounding environment. Become. And in this non-contact electric power feeding system 1 for illumination, since the 3rd unit 11 is a lighting fixture, by mounting the 3rd unit 11 in the electric power feeding part 39 of the 2nd unit 9, the 2nd of the 3rd unit 11 is carried out. The light source unit 26 can be turned on, and the surrounding environment can be further brightened.

  In the non-contact power feeding system 1 for illumination according to the present embodiment, when the first light source unit 19 is turned on by the output voltage of the first battery 14, a person manually turns off the second switch SW2, thereby The one light source unit 19 can be turned off. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to reduce the power consumption of the 1st battery 14. FIG.

  The first control circuit 21a is electrically connected to a third switch SW3 for turning on / off the power supply from the second unit 9 to the third unit 11.

  The first control circuit 21a stops the inverter circuit unit 15 when the output of the first power receiving coil 7 detected by the first detection unit is larger than the first specified value.

The first control circuit 21a is configured to switch the switching element Q when the output of the first power receiving coil 7 detected by the first detection unit is larger than the first specified value and the third switch SW3 is in the OFF state. Turn off 0 . The first control circuit 21a is configured to switch the switching element Q when the output of the first power receiving coil 7 detected by the first detection unit is larger than the first specified value and the third switch SW3 is in the ON state. Turn on 0 .

The first control circuit 21a, the output of the first receiving coil 7, which is detected by the first detection unit when: the first predetermined value, turns off the switching element Q 0.

Further, the first control circuit 21a is configured such that when the output of the first power receiving coil 7 detected by the first detection unit is equal to or lower than the first specified value and the third switch SW3 is in an OFF state, the inverter circuit unit 15 Stop. Further, the first control circuit 21a is configured such that when the output of the first power receiving coil 7 detected by the first detection unit is equal to or lower than the first specified value and the third switch SW3 is in the ON state, the inverter circuit unit 15 Drive. Thereby, the inverter circuit unit 15 can supply power to each of the second power transmission coils 8 1 to 8 n . Therefore, in the non-contact electric power feeding system 1 for illumination of this embodiment, electric power feeding from the 2nd unit 9 to the 3rd unit 11 is attained also at the time of emergency, such as at the time of the power failure of commercial power supply AC, for example.

  In the contactless power supply system 1 for illumination according to the present embodiment, when the power is supplied from the second unit 9 to the third unit 11 by the output voltage of the first battery 14, a person manually turns off the third switch SW3. As a result, the power supply from the second unit 9 to the third unit 11 can be turned off. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to reduce the power consumption of the 1st battery 14. FIG. Here, each of the second switch SW2 and the third switch SW3 is exposed on the other surface side (the lower surface side in FIG. 1) of the panel 34, as shown in FIG.

  The first control circuit 21a is electrically connected to the second control circuit 21b.

The second control circuit 21b is electrically connected to the respective gate terminals of the switching elements Q 1 to Q n. The second control circuit 21b controls each of the switching elements Q 1 to Q n separately when the third switch SW3 is in the on state.

  In the present embodiment, the first control unit 21 includes the first control circuit 21a and the second control circuit 21b. However, the function of the first control circuit 21a and the function of the second control circuit 21b are as follows. You may comprise with one control circuit which has.

  The third unit 11 includes the second power receiving coil 10 described above, the second light source unit 26 described above, and the second lighting device 27 described above. In addition, in this embodiment, although the LED element 20 is used for the 2nd light source part 26, not only this but an organic electroluminescent element, an inorganic electroluminescent element, etc. may be used, for example.

  The second lighting device 27 stabilizes the output of the second rectifying / smoothing unit (not shown) that rectifies and smoothes the voltage (high-frequency voltage) generated in the second power receiving coil 10 and the second rectifying / smoothing unit. And a stabilizing device (not shown) for outputting to the second light source unit 26.

  The second rectifying / smoothing unit includes, for example, a third rectifying unit (not shown) that rectifies a high-frequency voltage generated in the second power receiving coil 10 and a smoothing unit that smoothes the voltage rectified by the third rectifying unit. It can be comprised with a capacitor | condenser (not shown). As the third rectification unit, for example, a diode bridge constituted by four diodes may be employed.

  The stabilizing device has a constant voltage circuit (not shown) that converts the output voltage (DC voltage) of the second rectifying / smoothing unit to a predetermined DC voltage and outputs the voltage to the second light source unit 26. . Thereby, even if the input voltage of the 2nd lighting device 27 is fluctuate | varied, the 3rd unit 11 can apply a predetermined DC voltage to the 2nd light source part 26, Therefore The light of LED element 20 The output (light output of the second light source unit 26) can be stabilized. That is, in the non-contact power feeding system 1 for illumination according to the present embodiment, a desired light output can be obtained from the second light source unit 26. In this embodiment, the stabilization device includes the constant voltage circuit. However, the present invention is not limited to this, and for example, the output current (DC current) of the second rectifying and smoothing unit is changed to a predetermined DC current. It may have a constant current circuit that outputs a constant current to the second light source unit 26, or the output power (DC power) of the second rectifying / smoothing unit is converted to a predetermined DC power and the second light source unit. 26 may have a constant power circuit for outputting to H.26.

  In the non-contact power feeding system 1 for illumination according to the present embodiment, when the third switch 11 is placed on the power feeding unit 39 of the second unit 9 when the third switch SW3 is on, The second power transmission coil 8 can supply power in a non-contact manner (that is, the second light source unit 26 can be turned on). In addition, when turning on 3rd switch SW3, it may be before mounting the 3rd unit 11 in the electric power feeding part 39 of the 2nd unit 9, and may be after mounting.

  Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, when supplying electric power to each of the second unit 9 and the third unit 11, the first unit 6 placed on the one surface side of the first main body 18 in the first unit 6. Since the third unit 11 is placed on the power supply unit 39 of the two units 9 (the third unit 11 is stacked), the power transmission device (first unit) is compared with the conventional power supply system having the configuration shown in FIG. 6), the power supply surface A1 (see FIG. 2) for supplying power to the power receiving devices (second unit 9 and third unit 11) can be reduced, and a plurality of power receiving devices (second unit 9 and third unit 9) can be reduced. Even when power is supplied to the unit 11), it is possible to save the space of the power transmission device (first unit 6).

  Here, the third unit 11 is preferably displaceable from the power supply unit 39 of the second unit 9 within a range in which power can be supplied in a non-contact manner from the second power transmission coil 8 of the second unit 9. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, even if it is a case where the 3rd unit 11 is shifted and arrange | positioned from the electric power feeding part 39 of the 2nd unit 9, the 3rd unit 11 can be electrically fed. .

  By the way, in the non-contact electric power feeding system 1 for illumination of this embodiment, the 2nd lighting device 27 is provided with the 2nd detection part (not shown) which detects the output of the 2nd receiving coil 10. FIG. The second detector outputs a detection signal when the output of the second power receiving coil 10 is equal to or greater than a preset second specified value.

  The third unit 11 includes a transmission antenna 24 for transmitting the detection signal output from the second detection unit, and a transmission circuit unit for transmitting the detection signal to the second unit 9 by the transmission antenna 24. 25. In the present embodiment, the transmission antenna 24 is electrically connected to the transmission circuit unit 25. In the present embodiment, the transmission circuit unit 25 is electrically connected to the second lighting device 27.

  The second unit 9 includes a receiving antenna 23 for receiving the detection signal transmitted from the third unit 11 and a receiving circuit unit 22 for receiving the detection signal by the receiving antenna 23. . In the present embodiment, the receiving antenna 23 is electrically connected to the receiving circuit unit 22. In the present embodiment, the receiving circuit unit 22 is electrically connected to the second control circuit 21b.

  When the reception circuit unit 22 receives the detection signal by the reception antenna 23, the reception circuit unit 22 outputs the detection signal to the second control circuit 21b.

  Hereinafter, an example of a power feeding method from the second unit 9 to the third unit 11 will be described with respect to the illumination non-contact power feeding system 1 of the present embodiment. In addition, the 3rd unit 11 demonstrates as what is beforehand mounted in the electric power feeding part 39 of the 2nd unit 9. FIG.

When the third switch SW3 is in the on state, the second control circuit 21b selects each of the switching elements Q 1 to Q n in order to specify the second power transmission coil 8 facing the third unit 11. For a predetermined time (predetermined detection time). Incidentally, FIG. 3, the switching element Q 2 is an example of a case of ON state, all but the switching element Q 2 among the plurality of switching elements Q 1 to Q n is in the OFF state.

In the present embodiment, as shown in FIG. 3, the third unit 11, when the second transmission coil 8 2 at the feed portion 39 of the second unit 9 is placed on the placement area, the switching element Q 2 is turned on In the state, power can be supplied from the second unit 9 to the third unit 11 (that is, the second light source unit 26 can be turned on).

In the present embodiment, when power can be supplied from the second unit 9 to the third unit 11, the detection unit of the third unit 11 outputs the detection signal to the transmission circuit unit 25. The transmission circuit unit 25 transmits the detection signal to the second unit 9 by the transmission antenna 24. When the reception circuit unit 22 of the second unit 9 receives the detection signal by the reception antenna 23, the reception circuit unit 22 outputs the detection signal to the second control circuit 21b. The second control circuit 21b, when the detection signal from the reception circuit unit 22 is input, to maintain the on-state switching element Q 2. Thus, in the illumination for a non-contact power supply system 1 of this embodiment, as compared with the case where the second control circuit 21b is all the switching elements Q 1 to Q n on, reducing the power consumption of the second unit 9 It becomes possible to do. In the present embodiment, when there is no need to worry about the power consumption of the second unit 9, the second control circuit 21b is, it may be all of the switching elements Q 1 to Q n to the ON state. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, when the 3rd unit 11 is mounted in the electric power feeding part 39 of the 2nd unit 9, it will become possible to light the 2nd light source part 26 immediately.

In the non-contact power feeding system 1 for illumination according to the present embodiment, the second unit 9 includes the first battery 14, but may be configured not to include the first battery 14. In this case, the switching element Q 0 , the first charge / discharge circuit unit 13, and the inverter circuit unit 15 may not be provided in the second unit 9. Thereby, the non-contact electric power feeding system 1 for illumination can achieve size reduction of the 2nd unit 9. FIG. Furthermore, the non-contact power feeding system 1 for illumination can further reduce the power feeding surface A1 of the first unit 6 and further reduce the space of the first unit 6.

  In the present embodiment, the case where the third unit 11 is supplied with power from the second unit 9 is illustrated, but the present invention is not limited thereto, and the third unit 11 may be supplied with power directly from the first unit 6. Moreover, although the case where the 3rd unit 11 is a lighting fixture is illustrated in this embodiment, it is not restricted to this, For example, the electronic device (for example, mobile phone, music) which has the above-mentioned 2nd receiving coil 10 at least, for example A regenerator, a game machine, a rechargeable AA battery or a charger capable of charging an AA battery, and other portable devices).

  The non-contact power feeding system 1 for illumination according to the present embodiment described above includes the first unit 6 that is a power transmission device having the first power transmission coil 5. Moreover, the non-contact electric power feeding system 1 for illumination of this embodiment has the 1st power receiving coil 7 and the 1st power receiving which can be received non-contactedly from the 1st power transmission coil 5 by the electromagnetic induction by the magnetic field which generate | occur | produces in the 1st power transmission coil 5. A second unit 9 having a second power transmission coil 8 capable of inputting the output of the coil 7 is provided. Further, the non-contact power feeding system 1 for illumination according to the present embodiment includes a second power receiving coil 10 that can receive power from the second power transmitting coil 8 in a non-contact manner by electromagnetic induction caused by a magnetic field generated by the second power transmitting coil 8. A unit 11 is provided. Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, the 2nd unit 9 can light the 1st light source part 19 based on the said 1st light source part 19 and the said output of the 1st receiving coil 7. The lighting fixture includes the lighting device 17. Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, the 2nd power transmission coil 8 is arrange | positioned in a part (The lamp part 31 side of the base part 33, and the said opposite side of the lamp part 31) of the 2nd unit 9. The power feeding unit 39 is provided. And in the non-contact electric power feeding system 1 for illumination of this embodiment, the 3rd unit 11 carries out non-contact from the 2nd power transmission coil 8 by mounting this 3rd unit 11 in the electric power feeding part 39 of the 2nd unit 9. Since power is supplied, the power transmission device (second unit 9 and third unit 11) can be supplied even when power is supplied to a plurality of power reception devices (second unit 9 and third unit 11) as compared with the conventional power supply system having the configuration shown in FIG. One unit 6) can be saved in space.

  Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, the 2nd unit 9 converts the alternating voltage into a direct current voltage in the electric power feeding path between the 1st receiving coil 7 and the 2nd power transmission coil 8, and direct current | flow. Since the inverter device for converting the voltage into the AC voltage is not provided, it is possible to reduce the size of the second unit 9 as compared with the case where the converter device and the inverter device are provided. And in the non-contact electric power feeding system 1 for illumination of this embodiment, since the 2nd unit 9 applies the voltage which generate | occur | produces in the 1st receiving coil 7 to the 2nd power transmission coil 8 without frequency-converting, the 1st receiving coil It becomes possible to reduce the power loss in the feed path between the power transmission coil 7 and the second power transmission coil 8.

(Embodiment 2)
The non-contact power feeding system 1 for illumination according to the present embodiment has substantially the same basic configuration as that of the first embodiment, and the configuration of the second unit 9 is different from that of the first embodiment as shown in FIGS. 4 and 5. In addition, the same code | symbol is attached | subjected to the component similar to Embodiment 1, and description is abbreviate | omitted suitably. In FIG. 5, the commercial power source AC, the first rectifying unit 2 and the DC power source unit 3 are not shown. Also in this embodiment, the commercial power supply AC is not included as a constituent requirement.

  The power supply circuit unit 16 of the first unit 6 is electrically connected to the power cord 42. The power cord 42 is led out from one side of the first main body 18 (on the left side in FIGS. 4A and 4B). A power plug 43 is connected to the power cord 42. In the present embodiment, the power cord 42 may be provided with a first switch for turning on / off the power supply to the power circuit unit 16. In the present embodiment, as in the first embodiment, the first main body 18 may be embedded in, for example, a desk.

  The second unit 9 includes a first power receiving coil 7, a first rectifying / smoothing unit 12, a first battery 14, a first charging / discharging circuit unit 13, a first lighting device 17, a first light source unit 19, inverter circuit units 15 and 1. The second power transmission coils 8 are provided. In the present embodiment, the stabilized power source that is the first lighting device 17 converts the output current (DC current) of the first charge / discharge circuit unit 13 to a predetermined DC current and outputs the constant current to the first light source unit 19. It has a constant current circuit. Here, in this embodiment, the stabilized power supply includes the constant current circuit. However, the present invention is not limited to this. For example, the output voltage (DC voltage) of the first charge / discharge circuit unit 13 is set to a predetermined DC voltage. It may have a constant voltage circuit that makes the voltage constant and outputs it to the first light source unit 19, or the output power (DC power) of the first charging / discharging circuit unit 13 is made constant power to a predetermined DC power. You may have the constant power circuit which outputs to the 1 light source part 19. FIG. 4A and 4B, the first rectifying / smoothing unit 12, the first battery 14, the first charge / discharge circuit unit 13, the first lighting device 17, and the inverter circuit unit 15 are connected to the power supply circuit unit. It is shown as 30. In FIG. 4A, the first power receiving coil 7 is not shown.

  As shown in FIG. 5, the first power receiving coil 7 is connected between the pair of input ends of the first rectifying and smoothing unit 12. The pair of output ends of the first rectifying / smoothing unit 12 is connected to the pair of input ends of the first charge / discharge circuit unit 13.

  A pair of input terminals of the first lighting device 17 are connected to a pair of output terminals of the first charge / discharge circuit unit 13. The pair of output terminals of the first charge / discharge circuit unit 13 is connected to the pair of input terminals of the inverter circuit unit 15. That is, the inverter circuit unit 15 can input a voltage (DC voltage) obtained by rectifying and smoothing the output of the first power receiving coil 7. Here, in this embodiment, an inverter circuit that can input a voltage obtained by rectifying and smoothing the output of the first power receiving coil 7 and an inverter circuit that can input the output voltage of the first battery 14 are combined into one inverter circuit unit. 15. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to achieve size reduction of the 2nd unit 9. FIG.

  Between the pair of output terminals of the inverter circuit unit 15, the second power transmission coil 8 is connected.

  The second unit 9 includes a second control unit (not shown) that controls the first charge / discharge circuit unit 13, the first lighting device 17, and the inverter circuit unit 15. In FIG. 4, the second control unit is illustrated as a power supply circuit unit 30.

  The second control unit can be configured, for example, by mounting an appropriate program on a microcomputer. A second switch (not shown) for lighting the first light source unit 19 is electrically connected to the second control unit. The second controller is electrically connected to a third switch (not shown) for turning on / off the power supply from the second unit 9 to the third unit 11. Moreover, the said 2nd control part is provided with the said 1st detection part which detects the output of the 1st receiving coil 7 similarly to the 1st control part 21 in the non-contact electric power feeding system 1 for illumination of Embodiment 1. Yes.

  The second control unit precharges the first battery 14 via the first charge / discharge circuit unit 13 when the output of the first power receiving coil 7 detected by the first detection unit is equal to or lower than the first specified value. The generated DC voltage is output.

  The second control unit lights the first light source unit 19 via the first lighting device 17 when the second switch is on. The second control unit turns off the first light source unit 19 via the first lighting device 17 when the second switch is in an OFF state. Here, the second control unit is configured to output the first battery when the output of the first power receiving coil 7 detected by the first detection unit is equal to or less than the first specified value and the second switch is on. The first lighting device 17 is controlled to turn on the first light source unit 19 with the output voltage of 14. Thereby, also in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to light the 1st light source part 19 at the time of emergency, such as the time of the power failure of commercial power supply AC, for example.

  The second control unit drives the inverter circuit unit 15 when the third switch is on. The second control unit stops the inverter circuit unit 15 when the third switch is in an OFF state. Here, the second control unit is configured such that when the output of the first power receiving coil 7 detected by the first detection unit is equal to or lower than the first specified value and the third switch is in an ON state, the first battery The inverter circuit unit 15 is driven to supply power from the second unit 9 to the third unit 11 with the output voltage of 14. Thereby, also in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to supply electric power from the 2nd unit 9 to the 3rd unit 11 at the time of emergency, for example at the time of the power failure of commercial power supply AC.

  The second unit 9 includes a third main body 41 that can accommodate the first power receiving coil 7, the power supply circuit unit 30, the first light source unit 19, and the second power transmission coil 8.

  The third main body 41 is formed, for example, in a box shape (in this embodiment, a rectangular box shape). As a material of the third main body portion 41, for example, a translucent material or the like can be used. As the translucent material, for example, milky white acrylic resin or glass may be employed. In the present embodiment, the planar size of the third main body portion 41 is set slightly larger than the planar size of the first main body portion 18 of the first unit 6. That is, in the present embodiment, the planar size of the second unit 9 is set slightly larger than the planar size of the first unit 6. In the present embodiment, the planar size of the second unit 9 is set slightly larger than the planar size of the first unit 6, but is not limited to this, and is, for example, the same size as the planar size of the first unit 6. You may set it.

  The first power receiving coil 7 is disposed at the center of one surface side (the lower surface side in FIG. 4B) of the third main body portion 41. Further, the second power transmission coil 8 is disposed on the other surface side (the upper surface side in FIG. 4B) of the third main body portion 41. That is, in this embodiment, the power feeding unit 39 in which one second power transmission coil 8 is arranged is provided on the other surface side of the third main body 41. In the present embodiment, the second power transmission coil 8 is wound around, for example, a core 46 made of a magnetic material, but this is not particularly limited.

  In the non-contact electric power feeding system 1 for illumination of this embodiment, what is called a moving coil system is employ | adopted as a method of magnetically coupling the 2nd power transmission coil 8 and the 2nd power receiving coil 10. FIG. As a result, in the non-contact power feeding system 1 for illumination according to the present embodiment, power can be fed even if the third unit 11 is placed on the power feeding unit 39 of the second unit 9 at any place. It is possible to increase the degree of freedom of the mounting place. Furthermore, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to suppress the relative position shift of the 2nd power transmission coil 8 and the 2nd power receiving coil 10, and that the transmission efficiency of electric power falls. It becomes possible to suppress.

  In addition, a plurality of (four in the present embodiment) mounting boards 35 on which one LED element 20 is mounted are arranged inside the third main body portion 41. In the present embodiment, of the four mounting boards 35, two mounting boards 35 are disposed on one side surface (lower side in FIG. 4A) of the third main body 41, and the remaining two mounting boards 35 are mounted. The substrate 35 is disposed on the other side surface (the upper side in FIG. 4A) opposite to the one side surface of the third main body portion 41. Hereinafter, in the present embodiment, for convenience of explanation, the mounting substrate 35 disposed on the one side surface of the third main body portion 41 is referred to as a first mounting substrate 35a, and the mounting disposed on the other side surface of the third main body portion 41. The substrate 35 may be referred to as a second mounting substrate 35b.

  Each of the first mounting boards 35a is arranged so that each LED element 20 faces the one side surface. In addition, each of the first mounting substrates 35a is arranged next to each other. In the present embodiment, light emitted from each LED element 20 mounted on each first mounting substrate 35a is emitted from the one side surface.

  Each of the second mounting boards 35b is arranged so that each LED element 20 faces the other side surface. In addition, each of the second mounting boards 35b is arranged next to each other. In this embodiment, the light radiated | emitted from each LED element 20 mounted in each 2nd mounting board | substrate 35b radiate | emits from the said other side surface.

  The third unit 11 includes a second power receiving coil 10, a second battery 29 that can be charged by the output of the second power receiving coil 10, and a second charge / discharge circuit unit 28 that can charge and discharge the second battery 29. ing. In FIG. 4, the second battery 29 and the second charge / discharge circuit unit 28 are not shown.

  As the 2nd battery 29, a lithium ion battery, a lead acid battery, etc. are employable, for example. The second battery 29 is electrically connected to the second charge / discharge circuit unit 28. The second power receiving coil 10 is connected between the pair of input ends of the second charge / discharge circuit unit 28.

  The third unit 11 includes a fourth main body 44 that can store the second power receiving coil 10, the second battery 29, and the second charge / discharge circuit unit 28.

  The 4th main-body part 44 is formed in box shape (this embodiment rectangular shape), for example. As a material of the fourth main body 44, for example, a resin material or the like can be employed.

  The second power receiving coil 10 is disposed on one surface side (the lower surface side in FIG. 4B) of the fourth main body portion 44. Moreover, the 2nd receiving coil 10 is electrically connected to the 2nd charging / discharging circuit part 28 via the 6th connection line which is not shown in figure.

  The third unit 11 in the non-contact power feeding system 1 for illumination according to the present embodiment includes at least the second power receiving coil 10 described above, the second battery 29 described above, and the second charge / discharge circuit unit 28 described above. It is. Examples of this type of electronic device include a mobile phone, a music player, a game machine, a charger capable of charging a rechargeable AA battery or AAA battery, and other portable devices.

  In the non-contact power feeding system 1 for illumination according to the present embodiment, when the third unit 11 is a mobile phone, for example, the mobile phone is charged by placing the mobile phone on the power feeding unit 39 of the second unit 9. It becomes possible. Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, since the 1st light source part 19 of the 2nd unit 9 can be lighted at the time of emergency, such as at the time of the power failure of commercial power supply AC, for example, the 1st light source part The position of the third unit 11 (for example, a mobile phone) becomes easy to understand by the light from 19. Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, when feeding the third unit 11, the third unit 11 is placed on the other surface side of the third main body 41 of the second unit 9. Compared with the non-contact power feeding system 1 for illumination according to the first embodiment, the second unit 9 can be downsized, the power feeding surface A1 of the first unit 6 can be further reduced, and the space of the first unit 6 can be saved. Can be further improved.

  The illumination non-contact power supply system 1 according to the present embodiment described above includes the first unit 6 that is a power transmission device having the first power transmission coil 5, similarly to the illumination non-contact power supply system 1 according to the first embodiment. Moreover, the non-contact electric power feeding system 1 for illumination of this embodiment has the 1st power receiving coil 7 and the 1st power receiving which can be received non-contactedly from the 1st power transmission coil 5 by the electromagnetic induction by the magnetic field which generate | occur | produces in the 1st power transmission coil 5. A second unit 9 having a second power transmission coil 8 capable of inputting the output of the coil 7 is provided. Further, the non-contact power feeding system 1 for illumination according to the present embodiment includes a second power receiving coil 10 that can receive power from the second power transmitting coil 8 in a non-contact manner by electromagnetic induction caused by a magnetic field generated by the second power transmitting coil 8. A unit 11 is provided. Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, the 2nd unit 9 can light the 1st light source part 19 based on the said 1st light source part 19 and the said output of the 1st receiving coil 7. The lighting fixture includes the lighting device 17. Moreover, in the non-contact electric power feeding system 1 for illumination of this embodiment, the electric power feeding part 39 which has arrange | positioned the 2nd power transmission coil 8 is provided in a part of said 2nd unit 9 (the said other surface side of the 3rd main-body part 41). ing. And in the non-contact electric power feeding system 1 for illumination of this embodiment, the 3rd unit 11 carries out non-contact from the 2nd power transmission coil 8 by mounting this 3rd unit 11 in the electric power feeding part 39 of the 2nd unit 9. Since power is supplied, the power transmission device (second unit 9 and third unit 11) can be supplied even when power is supplied to a plurality of power reception devices (second unit 9 and third unit 11) as compared with the conventional power supply system having the configuration shown in FIG. One unit 6) can be saved in space.

(Embodiment 3)
The non-contact electric power feeding system 1 for illumination of this embodiment differs from Embodiment 2 in that the basic configuration is substantially the same as that of Embodiment 2 and the third unit 11 is a lighting fixture. In addition, the same code | symbol is attached | subjected to the component similar to Embodiment 2, and description is abbreviate | omitted suitably.

  The first light source unit 19 of the second unit 9 uses an organic electroluminescence element instead of using each LED element 20. That is, in the present embodiment, the first light source unit 19 has a plurality (four in the present embodiment) of organic electroluminescence elements. In addition, the connection relationship of each organic electroluminescent element may be a serial connection or a parallel connection, or may be a connection in which a series connection and a parallel connection are combined.

  Four organic electroluminescence elements are arranged inside the third main body 41 of the second unit 9. In the present embodiment, one organic electroluminescence element is disposed on each side surface of the third main body 41. In the present embodiment, the planar size of each organic electroluminescence element is set slightly smaller than the size of each side surface of the third main body 41. Thereby, in the non-contact electric power feeding system 1 for illumination of this embodiment, it becomes possible to radiate | emit the light surface-emitted from each organic electroluminescent element from each side surface of the 2nd unit 9, and obtain uniform light. Is possible.

  As shown in FIG. 6, the third unit 11 includes a fifth main body 45 formed in, for example, a box shape (in the present embodiment, a rectangular box shape). As a material of the fifth main body 45, for example, a translucent material or the like can be used. As the translucent material, for example, milky white acrylic resin or glass may be employed.

  In the contactless power supply system 1 for illumination according to the present embodiment, the first power receiving coil 7, the first rectifying and smoothing unit 12, the first battery 14, and the first charge / discharge circuit described in the second embodiment are provided in the fifth main body 45. The part 13, the 1st lighting device 17, the 1st light source part 19, the inverter circuit part 15, the 2nd power transmission coil 8, and the said 2nd control part are accommodated. Here, in the present embodiment, the configuration of the third unit 11 is the same as the configuration of the second unit 9. That is, in this embodiment, the power feeding unit 39 in which one second power transmission coil 8 is arranged is provided on one surface side (the upper surface side in FIG. 6) of the fifth main body 45. In the present embodiment, the plane size of the fifth main body 45 is set to the same size as the plane size of the third main body 41 of the second unit 9. In the present embodiment, the third unit 11 includes the first battery 14. However, the third unit 11 may not include the first battery 14.

  By the way, the non-contact electric power feeding system 1 for illumination of this embodiment is provided with the 4th unit 50 which is a lighting fixture which has the structure similar to the 3rd unit 11. FIG.

  In the illumination non-contact power supply system 1 of the present embodiment, the fourth unit 50 can be supplied with power by placing the fourth unit 50 on the power supply unit 39 of the third unit 11 (that is, the first light source unit). 19 can be turned on).

  In the illumination non-contact power feeding system 1 of the present embodiment, the number of power receiving devices (second unit 9, third unit 11, and fourth unit 50) is three, but this number is not particularly limited. For example, it may be four or more.

  In the non-contact electric power feeding system 1 for illumination according to the present embodiment described above, the second unit 9, the third unit 11, and the fourth unit 50 can be stacked to supply power to all of them. Therefore, in the non-contact electric power feeding system 1 for illumination of this embodiment, since a several lighting fixture can be piled up and all these can be electrically fed, it becomes possible to change a desired light quantity and light distribution freely.

DESCRIPTION OF SYMBOLS 1 Non-contact electric power feeding system for illumination 5 1st power transmission coil 6 1st unit 7 1st power receiving coil 8 2nd power transmission coil 9 2nd unit 10 2nd power receiving coil 11 3rd unit 14 1st battery 15 Inverter circuit part 17 1st Lighting device 19 First light source unit 20 LED element 26 Second light source unit 27 Second lighting device 29 Second battery 31 Lamp unit 31a Flat surface 32 Arm unit 33 Base unit 39 Power feeding unit

Claims (8)

  1. A first unit that is a power transmission device having a first power transmission coil, a first power reception coil that can receive power from the first power transmission coil in a non-contact manner by electromagnetic induction by a magnetic field generated in the first power transmission coil, and the first power reception A second unit having a second power transmission coil capable of inputting the output of the coil, and a second power reception coil capable of receiving power from the second power transmission coil in a non-contact manner by electromagnetic induction by a magnetic field generated by the second power transmission coil A lighting unit including a first light source unit and a first lighting device capable of lighting the first light source unit based on the output of the first power receiving coil. A power feeding unit in which the second power transmission coil is arranged is provided in a part of the second unit, and the third unit places the second power transmission by placing the third unit on the power feeding unit. Koi From a possible power supply without contact,
    The second unit includes a first battery that can be charged by the output of the first power reception coil, and at least one of the second power transmission coil and the first lighting device is not supplied with power from the first power reception coil. When the first battery is powered,
    The second unit has a first power supply path connected to the first power receiving coil, and a second power supply path branched from the first power supply path,
    The second unit applies a voltage generated in the first power receiving coil to the second power transmitting coil through the first power feeding path without frequency conversion, and generates a voltage generated in the first power receiving coil. A non-contact power feeding system for illumination, wherein the power is applied to the first battery and the first lighting device through two power feeding paths .
  2.   The non-contact power feeding system for illumination according to claim 1, wherein the third unit can be arranged so as to be shifted from the power feeding unit within a range in which power can be fed in a non-contact manner from the second power transmission coil.
  3. An inverter circuit unit capable of inputting at least one of a voltage obtained by rectifying and smoothing the output of the first power receiving coil and an output voltage of the first battery; and the inverter circuit unit supplies power to the second power transmission coil The non-contact electric power feeding system for illumination according to claim 1 or 2, characterized by performing.
  4. 4. The device according to claim 1, wherein the second unit includes a plurality of the second power transmission coils, and each of the second power transmission coils is arranged in an array in the power feeding unit. 5. The non-contact electric power feeding system for illumination as described in the item.
  5. The said 2nd power transmission coil moves to the position which can be electrically fed to a said 2nd power receiving coil, when the said 3rd unit is mounted in the said electric power feeding part. The non-contact electric power feeding system for illumination of Claim 1.
  6. The third unit includes a second lighting device capable of lighting the second light source unit based on the outputs of the second light source unit and the second power receiving coil, and a second chargeable device based on the output of the second power receiving coil. 6. The non-contact power feeding system for illumination according to claim 1, comprising at least one of a battery and a battery.
  7. The contactless power supply system for illumination according to claim 6, wherein at least one of the first light source unit and the second light source unit includes an LED element or an organic electroluminescence element.
  8. The second unit has the first light source unit and an umbrella-shaped lamp unit provided with a flat surface on which the third unit can be placed; an arm unit having one end connected to the lamp unit; A box-shaped base part that holds the other end of the arm part, the first power receiving coil is disposed on the side of the base part opposite to the lamp part side, and the second power transmission coil is 8. The lamp according to claim 1, wherein the lamp is disposed on at least one of the lamp part side of the base part and the side of the lamp part opposite to the base part side. The non-contact electric power feeding system for illumination as described in the item.
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JP2005073350A (en) * 2003-08-22 2005-03-17 Matsushita Electric Works Ltd Power tool
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