JP2019153451A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a luminaire capable of improving the degree of freedom in mounting a control unit with respect to the luminaire. SOLUTION: The lighting equipment according to the present invention has a light source, a power transmission coil for generating an AC magnetic field, a lighting device for lighting the light source, a housing for accommodating the lighting device, and an AC magnetic field. It has a power receiving coil for generating a voltage, and includes a control unit that operates by the voltage generated in the power receiving coil, and the control unit is attached to the housing. [Selection diagram] Fig. 2

Description

  The present invention relates to a lighting fixture.

  Patent Document 1 discloses a lighting device that allows a user to selectively add functions by connecting a function adding device to an LED unit.

JP, 2014-220162, A

  In patent document 1, the 1st connection part which is a connector is provided in an LED unit. In addition, the function addition device is provided with a second connection portion which is a connector. The second connection part is connected to the first connection part. At this time, since the connectors are directly connected or connected by a cable, the arrangement of the function addition device or the structure of the lighting device may be restricted. Further, when the connectors are connected by a cable, it may take time to attach the function adding device and connect the cable.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a lighting fixture that can improve the degree of freedom in mounting a control unit.

  A luminaire according to the present invention includes a light source, a power transmission coil that generates an alternating magnetic field, a lighting device that lights the light source, a housing that houses the lighting device, and generates a voltage according to the alternating magnetic field. And a control unit that operates by a voltage generated in the power receiving coil, and the control unit is attached to the housing.

  In the lighting fixture according to the present invention, power is supplied from the lighting device to the control unit attached to the housing in a non-contact manner. For this reason, it is not necessary to connect a lighting device and a control unit directly or via wiring. Therefore, the degree of freedom in mounting the control unit can be improved.

1 is a perspective view of a lighting fixture according to Embodiment 1. FIG. 6 is a diagram illustrating a state where a control unit is removed from the housing according to Embodiment 1. FIG. 6 is a diagram illustrating a state where a light source unit is removed from the housing according to Embodiment 1. FIG. 2 is a cross-sectional view of the lighting fixture according to Embodiment 1. FIG. 2 is a cross-sectional view of the light source unit according to Embodiment 1. FIG. 4 is a diagram illustrating a state where a light-transmitting cover is removed from the light source unit according to Embodiment 1. FIG. 2 is a circuit block diagram of the lighting fixture according to Embodiment 1. FIG. 2 is a circuit block diagram of a control unit according to Embodiment 1. FIG. FIG. 12 is a perspective view of a lighting fixture according to a modification of the first embodiment.

  A lighting apparatus according to an embodiment of the present invention will be described with reference to the drawings. The same or corresponding components are denoted by the same reference numerals, and repeated description may be omitted.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a lighting fixture 1 according to Embodiment 1. FIG. Drawing 1 is a perspective view which looked at lighting fixture 1 from the bottom, when lighting fixture 1 is installed in to-be-attached parts, such as a ceiling. The lighting fixture 1 includes a light source unit 10, a housing 5, and a control unit 3.

  The light source unit 10 includes a light source. The housing | casing 5 is an instrument main body attached to a to-be-attached part. A light source unit 10 is attached to the housing 5. The housing 5 houses a lighting device that turns on the light source. The control unit 3 is attached to the housing 5. The control unit 3 is supplied with power from the light source unit 10.

  The housing 5 has a main portion 5a that extends from the portion where the light source unit 10 is attached to both sides in the short direction of the lighting fixture 1. The main part 5a is formed from a metal plate, for example. The housing 5 is formed, for example, by bending a metal plate. The housing 5 may be formed from a single metal plate, or may be formed by combining a plurality of metal plates. End portions 5b are provided at both ends in the longitudinal direction of the main portion 5a.

  FIG. 2 is a diagram illustrating a state where the control unit 3 is removed from the housing 5 according to the first embodiment. The housing 5 has a recess 5d. The concave portion 5d is provided in the main portion 5a. The concave portion 5d is an attachment portion where the control unit 3 is disposed. The control unit 3 is attached to the recess 5d. A fixing portion (not shown) for fixing the control unit 3 is provided in the concave portion 5d. The control unit 3 is exposed from the housing 5 in a state of being attached to the concave portion 5d of the housing 5.

  The recess 5 d has an opening that opens toward the light emission direction of the light source unit 10. The control unit 3 is attached to the recess 5d from the opening as shown by the arrow in FIG. The control unit 3 may be attached to the recess 5d from below or may be inserted in the recess 5d in the horizontal direction.

  FIG. 3 is a diagram illustrating a state where the light source unit 10 is removed from the housing 5 according to the first embodiment. The light source unit 10 includes a translucent cover 14 and a lighting device 2. The light source is covered with a translucent cover 14. Moreover, the housing | casing 5 has the accommodating part 5c. The accommodating part 5c is formed from a metal plate.

  FIG. 4 is a cross-sectional view of the lighting fixture 1 according to the first embodiment. FIG. 4 is a cross-sectional view of the luminaire 1 in the short direction. The light source unit 10 is attached to the storage portion 5c. With the light source unit 10 attached to the housing 5, the storage unit 5 c stores the lighting device 2. The lighting device 2 is covered with a housing 5.

  The main part 5a is provided on both sides of the storage part 5c. The main part 5a has a slope inclined toward the attached part. The casing 5 becomes thinner as the distance from the light source unit 10 increases.

  In the housing 5, the concave portion 5d is adjacent to the storage portion 5c. The space for storing the control unit 3 formed by the recess 5d and the space for storing the lighting device 2 formed by the storage 5c are separated by the side wall 4 of the housing 5 forming the recess 5d. The lighting device 2 is provided at a position adjacent to the side wall 4. The control unit 3 is provided at a position adjacent to the side wall 4. The control unit 3 is adjacent to the lighting device 2 with the side wall 4 interposed therebetween.

  The lighting device 2 has a power transmission coil that generates an alternating magnetic field. The power transmission coil is provided adjacent to the side wall 4. The power transmission coil is a power transmission coil in non-contact power feeding. The control unit 3 has a power receiving coil that generates a voltage according to an alternating magnetic field generated by the power transmitting coil. The power receiving coil is provided adjacent to the side wall 4. The power receiving coil is a power receiving coil in non-contact power feeding. The control unit 3 operates by a voltage generated in the power receiving coil. The power transmission coil and the power reception coil are adjacent to each other with the side wall 4 interposed therebetween.

  The sidewall 4 is formed from a non-conductive material. The non-conductive material is, for example, resin or glass. In the present embodiment, housing 5 has a main portion 5a formed from a metal plate, and a portion formed between non-conductive materials sandwiched between lighting device 2 and control unit 3. Thereby, non-contact electric power feeding using magnetism can be performed to the control unit 3 outside the housing 5 from the lighting device 2 inside the housing 5 formed of a metal plate.

  The outer shell of the lighting device 2 located between the power transmission coil and the side wall 4 is preferably formed from a non-conductive material such as resin. Moreover, it is preferable that the outer shell of the control unit 3 positioned between the power receiving coil and the side wall 4 is made of a non-conductive material such as resin. In the present embodiment, the power receiving coil and the power transmitting coil are adjacent to each other with the non-conductive material interposed therebetween. As described above, the member provided between the power transmitting coil and the power receiving coil is formed of a non-conductive material, so that non-contact power feeding and communication using magnetism can be efficiently performed.

  FIG. 5 is a cross-sectional view of the light source unit 10 according to the first embodiment. FIG. 5 is a longitudinal sectional view of the light source unit 10. FIG. 6 is a diagram illustrating a state in which the translucent cover 14 is removed from the light source unit 10 according to the first embodiment. The light source unit 10 includes a base 12, a lighting device 2, a substrate 13, a light source 11, and a translucent cover 14. The lighting device 2 is attached to one surface of the base 12. A substrate 13 is attached to the other surface of the base 12. A plurality of light sources 11 are mounted on the surface of the substrate 13 opposite to the base 12. The translucent translucent cover 14 is attached to the base 12 so as to cover the substrate 13 and the plurality of light sources 11.

  The light source 11 is a semiconductor light source such as an LED element. The light source 11 may be an organic EL (Electro-Luminescence). The light source unit 10 only needs to have one or more light sources 11. Further, the plurality of light sources 11 may be connected in series, parallel, or series-parallel.

  5 and 6, the position of the power transmission coil 6 is indicated by a dotted line. The power transmission coil 6 is provided in the edge part adjacent to the side wall 4 among the lighting devices 2, for example. The power transmission coil 6 may be disposed in the vicinity of the outline of the control unit 3.

  FIG. 7 is a circuit block diagram of the lighting fixture 1 according to the first embodiment. In FIG. 7, the control unit 3 is omitted. The lighting device 2 includes a first power supply unit 21, a second power supply unit 22, a first control unit 23, and the power transmission coil 6. The first power supply unit 21 is supplied with power from the external power supply AC and turns on the light source 11. The external power source AC is, for example, a commercial power source, and supplies an AC voltage to the lighting device 2. Note that the external power supply AC may be a DC power supply.

  The second power supply unit 22 is supplied with power from, for example, the first power supply unit 21 and generates an AC voltage. The power transmission coil 6 is applied with an AC voltage generated by the second power supply unit 22 and generates an AC magnetic field.

  The first control unit 23 controls the first power supply unit 21 and the second power supply unit 22. For example, the first control unit 23 adjusts the output power of the first power supply unit 21 and the second power supply unit 22 by controlling on and off of the switching elements included in the first power supply unit 21 and the second power supply unit 22. The first control unit 23 has a communication terminal IN connected to the power transmission coil 6 via the second power supply unit 22.

  The lighting device 2 is not limited to this, and may have a function of turning on at least the light source 11 and supplying power from the power transmission coil 6 to an external device such as the control unit 3. For example, the first power supply unit 21 and the second power supply unit 22 may be integrated.

  FIG. 8 is a circuit block diagram of the control unit 3 according to the first embodiment. The control unit 3 is, for example, a wireless communication device. The control unit 3 includes a power receiving coil 31, a third power supply unit 32, a second control unit 33, and a wireless communication unit 34. The power receiving coil 31 is provided at an end of the control unit 3 adjacent to the side wall 4, for example. The power receiving coil 31 may be disposed in the vicinity of the outline of the control unit 3.

  When an AC voltage is applied to the power transmission coil 6, a voltage is generated in the power reception coil 31 by electromagnetic induction. The power receiving coil 31 converts an alternating magnetic field generated by the power transmitting coil 6 into a voltage. The third power supply unit 32 is supplied with the voltage generated in the power receiving coil 31 and operates the second control unit 33. The third power supply unit 32 may voltage-convert, rectify, or smooth the voltage generated in the power receiving coil 31 and supply the voltage to the second control unit 33. The second control unit 33 is operated by a voltage generated in the power receiving coil 31. The second control unit 33 is connected to the wireless communication unit 34. Thus, in the present embodiment, the control unit 3 is contactlessly powered from the lighting device 2.

  The wireless communication unit 34 receives signals from the outside wirelessly. The signal received by the wireless communication unit 34 is, for example, a dimming signal that determines the lighting state of the light source 11. The wireless communication unit 34 transmits a communication signal corresponding to the received signal to the second control unit 33. The second control unit 33 transmits a communication signal from the power reception coil 31 to the power transmission coil 6 via the third power supply unit 32. For example, the second control unit 33 controls the third power supply unit 32 to adjust the impedance of the power receiving coil 31 or the AC magnetic field generated in the power receiving coil 31 to transmit a communication signal.

  As described above, the control unit 3 transmits a communication signal from the power receiving coil 31 to the power transmitting coil 6. As shown in FIG. 7, the lighting device 2 has a communication terminal IN that receives a communication signal from the control unit 3. The communication signal is received by the power transmission coil 6 and input from the communication terminal IN to the first control unit 23 via the second power supply unit 22. In response to the communication signal, the first control unit 23 brightens or darkens the light source 11. Further, the lighting device 2 may turn on or off the light source 11 according to the communication signal.

  In the present embodiment, power is supplied from the lighting device 2 to the control unit 3 in a non-contact manner. Moreover, the lighting device 2 and the control unit 3 communicate in a non-contact manner. For this reason, the power supply line and communication line between the lighting device 2 and the control unit 3 can be reduced. In the present embodiment, since it is not necessary to connect the lighting device 2 and the control unit 3 directly or via a wiring, the degree of freedom in mounting the control unit 3 can be improved.

  Moreover, since the structure which lets the wiring between the lighting device 2 and the control unit 3 pass is unnecessary, the structure of the lighting fixture 1 can be simplified. Furthermore, since it is not necessary to connect a cable when attaching the control unit 3, the control unit 3 can be easily attached.

  Further, since the side wall 4 is formed of a non-conductive material, the control unit 3 can be disposed outside the housing 5. In this Embodiment, the control unit 3 can be arrange | positioned inside and outside the housing | casing 5, and the freedom degree of attachment of the control unit 3 can further be improved.

  In the present embodiment, the control unit 3 can be attached from the outside of the housing 5. For this reason, for example, when the control unit 3 is added after the lighting fixture 1 is attached to the ceiling or the like, it is not necessary to remove the light source unit 10 from the housing 5 and attach the control unit 3 inside the housing 5. Therefore, the function of the lighting fixture 1 can be easily expanded.

  In the present embodiment, the control unit 3 is exposed from the housing 5. For this reason, the sensitivity of wireless communication can be improved. Further, the control unit 3 is provided on the light source 11 side with respect to the attached portion such as a ceiling. For this reason, it can prevent that radio | wireless communication is prevented by the to-be-attached part.

  As a modification of the present embodiment, the control unit 3 is not limited to a wireless communication device, and may be any device that operates with a voltage generated in the power receiving coil 31. The control unit 3 may be a human sensor, for example. In this case, the control unit 3 includes a sensor element. Further, the control unit 3 and the lighting device 2 may communicate with each other through a route different from the non-contact power feeding. Further, a signal may be transmitted from the lighting device 2 to the control unit 3. Further, the control unit 3 may not communicate with the lighting device 2.

  Moreover, although the lighting fixture 1 of this Embodiment is elongate, the shape of the lighting fixture 1 is not restricted to this. For example, the luminaire 1 may be a square, a polygon, a circle, an ellipse, or the like in plan view. Further, the surface of the main part 5a may not be inclined and may extend in parallel with the attached part. As the structure of the lighting fixture 1, any structure in which the control unit 3 is attached to the housing 5 that houses the lighting device 2 can be employed. For example, the housing 5 may be cylindrical.

  Moreover, in this Embodiment, the opening part of the side wall 4 and the recessed part 5d is a rectangle. As a modification, the shape of the opening of the side wall 4 and the recess 5d may be an ellipse, a polygon, or a combination of a plurality of ellipses and a plurality of polygons. An ellipse includes a circle. The polygon includes a triangle and a quadrangle. Moreover, the recessed part 5d does not need to be provided in the main part 5a, for example, may be provided in the edge part 5b. Any structure in which the control unit 3 can be attached from the outside of the housing 5 can be adopted as the structure of the recess 5d.

  In the present embodiment, the opening of the recess 5 d faces the direction inclined with respect to the optical axis of the light source 11. The optical axis of the light source 11 is a direction perpendicular to the attached portion. Not only this but the opening part of the recessed part 5d may face the direction parallel to the optical axis of the light source 11, and may face the direction perpendicular | vertical to the optical axis of the light source 11.

  In addition, the portion of the housing 5 to which the control unit 3 is attached may not be the recess 5d. The control unit 3 may be attached to the side surface of the housing 5, for example.

  In the present embodiment, the control unit 3 is a rectangular parallelepiped. The control unit 3 may have a shape other than a rectangular parallelepiped as long as the power receiving coil 31 can be disposed adjacent to the side wall 4.

  The lighting device 2 and the control unit 3 may not be adjacent to each other as long as non-contact power feeding is possible. Further, the side wall 4 may not be formed of a non-conductive material as long as non-contact power supply from the lighting device 2 to the control unit 3 is possible.

  Moreover, in this Embodiment, parts other than the side wall 4 among the housing | casing 5 are formed with a metal plate. Not only this but a part or all of parts other than the side wall 4 in the housing | casing 5 may be formed from members other than a metal plate.

  FIG. 9 is a perspective view of a lighting fixture 201 according to a modification of the first embodiment. In the lighting fixture 201, the recessed portion 5d is provided with a fixing portion 5e. The fixing part 5e is a rail. The fixing portion 5e is provided on the side surface adjacent to the side wall 4 in the recess 5d. Further, a groove 203e is provided on a side surface of the control unit 203 that faces the fixed portion 5e. The control unit 203 is slid toward the side wall 4. As a result, the fixing portion 5e, which is a rail, enters the groove 203e, and the control unit 203 is attached to the recess 5d.

  In the lighting fixture 201, the fixing portion 5e is provided in a portion other than the side wall 4 in the recess 5d. For this reason, the control unit 203 can be brought close to the side wall 4. Therefore, the efficiency of contactless power feeding and communication between the control unit 203 and the lighting device 2 can be improved.

  The method for attaching the control unit 203 to the housing 5 is not limited to this. For example, a rail may be provided in the control unit 203, and a groove may be provided in the recess 5d. Further, a hooking claw may be provided on each of the housing 5 or the side wall 4 and the control unit 203, and the hooking claws may be engaged with each other. Further, the control unit 203 may be provided with a magnet on the outer shell, and may be attached to a metal part provided on a part of the housing 5 or the side wall 4 by the magnetic force of the magnet. For example, the control unit 203 may be provided with magnets at both ends, and may be attached to the side surfaces on both sides of the side wall 4 of the recess 5d by the magnetic force of the magnet.

  Further, an opening or a groove may be provided in the housing 5 or the side wall 4 and a hooking claw of the control unit 203 may be hung on the opening or the groove. Alternatively, an opening or groove may be provided in the control unit 203, and a hooking claw provided on the housing 5 or the side wall 4 may be hung on the opening or groove. The control unit 203 may be attached to the housing 5 without being limited to these examples.

  Note that the technical features described in this embodiment may be used in appropriate combination.

  1,201 lighting fixture, 2 lighting device, 3,203 control unit, 203e groove, 4 side wall, 5 housing, 5a main part, 5b end, 5c storage part, 5d recess, 5e fixing part, 6 power transmission coil, 10 Light source unit, 11 Light source, 12 Base, 13 Substrate, 14 Translucent cover, 21 First power supply unit, 22 Second power supply unit, 23 First control unit, 31 Power receiving coil, 32 Third power supply unit, 33 Second control , 34 Wireless communication unit

Claims (12)

A light source;
A lighting device having a power transmission coil for generating an alternating magnetic field and lighting the light source;
A housing for housing the lighting device;
A control unit having a power receiving coil for generating a voltage in response to the AC magnetic field, and operated by a voltage generated in the power receiving coil;
With
The lighting apparatus, wherein the control unit is attached to the housing. The housing has a recess;
The lighting apparatus according to claim 1, wherein the control unit is attached to the recess and is adjacent to the lighting device with a side wall of the housing forming the recess interposed therebetween. The housing is
A storage unit that stores the lighting device and to which the light source is attached;
A main part provided on both sides of the storage part;
Have
The lighting apparatus according to claim 2, wherein the concave portion is provided in the main portion.   The lighting apparatus according to claim 2, wherein the side wall is made of a non-conductive material.   The lighting apparatus according to claim 4, wherein the non-conductive material is resin or glass.   The shape of the opening of the side wall and the recess is an ellipse, a polygon, or a combination of a plurality of ellipses and a plurality of polygons. The lighting fixture as described in a term. The concave portion is provided with a fixing portion for fixing the control unit,
The lighting fixture according to any one of claims 2 to 6, wherein the fixing portion is provided in a portion of the recess other than the side wall.   The lighting apparatus according to any one of claims 1 to 7, wherein the power receiving coil and the power transmitting coil are adjacent to each other with a non-conductive material interposed therebetween.   The lighting device according to any one of claims 1 to 8, wherein the control unit is exposed from the housing in a state of being attached to the housing. The housing is
A main part formed from a metal plate;
The lighting apparatus according to claim 1, further comprising: a portion sandwiched between the lighting device and the control unit and formed of a non-conductive material.   The lighting device according to any one of claims 1 to 10, wherein the control unit transmits a communication signal from the power receiving coil to the power transmitting coil.   The lighting device according to any one of claims 1 to 11, wherein the lighting device includes a communication terminal that receives a communication signal from the control unit.

Images