JP7283247B2 - Lighting devices and luminaires - Google Patents

Description

The present invention relates to a lighting device and a lighting fixture.

Patent Literature 1 discloses a circuit board having wiring and a cylindrical magnetic core supported by the wiring inserted inside. The wiring is arranged so as to stand on the surface of the substrate and has rigidity. The magnetic core is supported in a hollow position so as to overlap and be separated from the surface area of the substrate.

Japanese Patent No. 6176501

In Patent Literature 1, it is possible to eliminate the installation space for the magnetic core on the mounting surface of the substrate, and to realize miniaturization of the product. However, in a lighting fixture having a plurality of built-in lighting devices, if a fixing member for a magnetic core is installed in each lighting device, the assembly process may become complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a lighting device and a lighting fixture in which a magnetic core can be easily installed.

A lighting device according to a first disclosure comprises a first power supply device for lighting a light source, a second power supply device for lighting the light source, a magnetic core, and the first power supply device via the magnetic core. A first wire that connects to the outside and is wound around the magnetic core, and a second wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core. and, wherein the magnetic core is provided between the first power supply device and the second power supply device .
A lighting device according to a second disclosure includes a first power supply device for lighting a light source, a second power supply device for lighting the light source, a magnetic core, and the first power supply device via the magnetic core. A first wire that connects to the outside and is wound around the magnetic core, and a second wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core. and a signal input section to which a signal is input from the outside, the first wire includes a wire connecting the first power supply device and the signal input section, and the second wire is connected to the second power supply device. A wire connecting the power supply and the signal input is included.
A lighting device according to a third disclosure includes a first power supply device for lighting a light source, a second power supply device for lighting the light source, a magnetic core, and the first power supply device via the magnetic core. A first wire that connects to the outside and is wound around the magnetic core, and a second wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core. and, the first electric wire pulled out from the first power supply detours away from the center of the first power supply or the second power supply to reach the magnetic core.
A lighting device according to a fourth disclosure includes a first power supply device for lighting a light source, a second power supply device for lighting the light source, a magnetic core, and the first power supply device via the magnetic core. A first wire that connects to the outside and is wound around the magnetic core, and a second wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core. and, the first electric wire pulled out from the magnetic core detours away from the center of the first power supply device or the second power supply device and is connected to the outside.
A lighting device according to a fifth disclosure includes a first power supply device for lighting a light source, a second power supply device for lighting the light source, a magnetic core, and the first power supply device via the magnetic core. A first wire that connects to the outside and is wound around the magnetic core, and a second wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core. , a support that holds the light source, and a fixing member that holds the magnetic core apart from the support.
A lighting device according to a sixth disclosure includes a first power supply device for lighting a light source, a second power supply device for lighting the light source, a magnetic core, and the first power supply device via the magnetic core. A first wire that connects to the outside and is wound around the magnetic core, and a second wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core. and, wherein the magnetic core is separated from the light source, the first power supply and the second power supply.

In the lighting device according to the present invention, the first electric wire from the first power supply device and the second electric wire from the second power supply device are wound around one magnetic core. Therefore, there is no need to provide a magnetic core for each power supply device, and complication of the assembly process can be suppressed. Therefore, the magnetic core can be easily installed.

1 is a perspective view of a lighting fixture according to Embodiment 1; FIG. 1 is a plan view of a lighting fixture according to Embodiment 1; FIG. 1 is a front view of a lighting fixture according to Embodiment 1; FIG. FIG. 4 is a plan view of a lighting fixture according to a first modification of Embodiment 1; FIG. 8 is a plan view of a lighting fixture according to a second modification of the first embodiment; FIG. 10 is a diagram illustrating an example of a result of noise measurement of interference wave power; FIG. 10 is a plan view of a lighting fixture according to Embodiment 2; FIG. 11 is a plan view of a lighting fixture according to Embodiment 3;

A lighting device and a lighting fixture according to embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same or corresponding components, and repetition of description may be omitted.

Embodiment 1.
FIG. 1 is a perspective view of a lighting fixture 1 according to Embodiment 1. FIG. A lighting fixture 1 includes a light source 2 , a power supply device 4 , and heat radiation fins 3 . The light source 2 has a light emitting element such as an LED. The light source 2 includes a first light source 2a and a second light source 2b.

The power supply device 4 is a lighting device that lights the light source 2 . The power supply device 4 controls power supplied to the light source 2 .

The radiation fin 3 has a first surface 3a provided with the light source 2 and a second surface 3b opposite to the first surface 3a. The radiation fins 3 correspond to supports that hold the light source 2 . The radiation fins 3 radiate heat generated by the light source 2 . Moreover, the heat radiation fins 3 may radiate the heat generated by the power supply device 4 . The radiation fins 3 are made of metal, for example.

FIG. 2 is a plan view of the lighting fixture 1 according to Embodiment 1. FIG. The power supply 4 includes a first power supply 6 and a second power supply 7 . The first power supply device 6 turns on the first light source 2a. The second power supply device 7 turns on the second light source 2b. Note that, as shown in FIG. 1, the first power supply device 6, the second power supply device 7, and a magnetic core 12, which will be described later, are housed in a case 4a. The case 4a is made of metal, for example. For convenience, the case 4a is omitted in FIG.

A first power supply device 6 , a second power supply device 7 and an input section 5 are provided on the second surface 3 b of the heat radiation fin 3 . The first power supply device 6 and the second power supply device 7 are arranged in the longitudinal direction of the first surface 3a. The input unit 5 is provided adjacent to the second power supply device 7 . Power is input to the input unit 5 from an external power source. The external power supply is, for example, a commercial AC power supply.

In the first power supply device 6, the first input terminal 6a, the first output terminal 6b, the first lighting circuit, the first control section, etc. are formed on the first substrate 6c. A pair of first input wirings 8 connects the first input terminal 6 a and the input section 5 . The first lighting circuit receives power from an external power supply via a first input terminal 6a and generates power for lighting the first light source 2a. The first lighting circuit converts the input voltage supplied from the input unit 5 into target power and supplies the target power to the first light source 2a. The first controller controls the first lighting circuit. The first lighting circuit is, for example, a switching power supply circuit. The switching power supply circuit includes a boost chopper circuit, a buck converter circuit, and the like. The output power of the first lighting circuit is output from the first output terminal 6b. The first output terminal 6b is connected to the first light source 2a by a first output wiring 10. As shown in FIG. Thereby, the 1st light source 2a lights.

In the second power supply device 7, the second input terminal 7a, the second output terminal 7b, the second lighting circuit, the second control section, etc. are formed on the second substrate 7c. A pair of second input wirings 9 connects the second input terminal 7 a and the input section 5 . The second lighting circuit receives power from an external power supply via the second input terminal 7a and generates power for lighting the second light source 2b. The second lighting circuit converts the input voltage supplied from the input unit 5 into target power and supplies the target power to the second light source 2b. The second control section controls the second lighting circuit. The second lighting circuit is, for example, a switching power supply circuit. The output power of the second lighting circuit is output from the second output terminal 7b. The second output terminal 7b is connected by a second output wiring 11 to the second light source 2b. Thereby, the second light source 2b is lit.

The lighting fixture 1 is provided with a space in which a magnetic core 12 for suppressing noise is installed. The magnetic core 12 is provided between the first power supply 6 and the second power supply 7 . The first input wiring 8 and the second input wiring 9 are wound around one magnetic core 12 in the same direction. The first input wiring 8 and the second input wiring 9 are each wound around the magnetic core 12 multiple times. The first input wiring 8 corresponds to a first electric wire that connects the first power supply device 6 and the outside via the magnetic core 12 . The second input wiring 9 corresponds to a second electric wire that connects the second power supply device 7 and the outside via the magnetic core 12 .

Generally, noise from electronic equipment is regulated. For this reason, noise filters are sometimes incorporated in lighting fixtures as a countermeasure against EMC (Electromagnetic Compatibility). The magnetic core 12 is provided as such a noise filter.

The magnetic core 12 is annular. The magnetic core 12 is made of ferrite, for example. The magnetic core 12 is also called a ferrite ring or ferrite core. The material and shape of the magnetic core 12 are not limited to these. By winding an electric wire around the magnetic core 12, the electric wire and the magnetic core 12 form a coil. This coil functions as a filter that attenuates high frequency noise. Also, part of the noise current flowing through the wire loses energy as magnetic loss. This further improves the effect of noise removal.

In the present embodiment, by winding the first input wiring 8 and the second input wiring 9 around the magnetic core 12, noise entering from the external power supply can be suppressed. By winding the first input wiring 8 and the second input wiring 9 around the magnetic core 12 in the same direction, it is possible to prevent the noise suppression effects from canceling each other out.

FIG. 3 is a front view of the lighting fixture 1 according to Embodiment 1. FIG. A fixing member 13 is provided on the second surface 3 b of the radiation fin 3 . The fixing member 13 is also called a fixing base. The fixing member 13 is L-shaped. The fixing member 13 has a first portion 13a and a second portion 13b. The first portion 13a extends from the second surface 3b in a direction away from the first surface 3a. The first portion 13a extends perpendicular to the second surface 3b. Not limited to this, the first portion 13a may be inclined with respect to the second surface 3b.

The first portion 13a extends from the second portion 13b. The second portion 13b extends along the second surface 3b. The first power supply device 6 is provided on the second portion 13b. The fixing member 13 is sandwiched between the first power supply device 6 and the heat radiation fins 3 . The fixing member 13 is fixed to the radiation fins 3 or the first power supply device 6 with screws or the like.

The magnetic core 12 is fixed to the first portion 13a. As shown in FIG. 2 , a connecting portion 20 extends from the magnetic core 12 . The connecting portion 20 and the first portion 13a are fixed to each other by a fixture 21. As shown in FIG. The fixture 21 is, for example, a screw. The magnetic core 12 is fixed to the end of the first portion 13a opposite to the second portion 13b. Thus, the fixing member 13 holds the magnetic core 12 apart from the heat radiation fins 3 .

The heat generated by the first power supply device 6 and the first light source 2a is transmitted to the radiation fins 3. As shown in FIG. Here, in this embodiment, the magnetic core 12 does not come into contact with the radiation fins 3 . Therefore, it is possible to suppress the heat transfer from the radiation fins 3 to the magnetic core 12 . Therefore, the temperature rise of the magnetic core 12 can be suppressed. As a result, the noise reduction effect of the magnetic core 12 can be effectively exhibited.

Also, the magnetic core 12 is provided apart from the first power supply device 6 , the second power supply device 7 and the light source 2 . Therefore, the heat from the first power supply device 6 , the second power supply device 7 and the light source 2 can be suppressed from being transferred to the magnetic core 12 . Therefore, the temperature rise of the magnetic core 12 can be further suppressed.

Further, the first power supply device 6 is provided on the side opposite to the magnetic core 12 with respect to the first portion 13a. That is, the first power supply device 6 and the magnetic core 12 are separated by the first portion 13a. Therefore, the heat from the first power supply device 6 can be suppressed from being transferred to the magnetic core 12, and the temperature rise of the magnetic core 12 can be further suppressed.

Also, the fixing member 13 has a lower thermal conductivity than the heat radiation fins 3 . The radiation fins 3 are made of aluminum, for example. On the other hand, the fixing member 13 is made of iron, for example. As a result, the heat from the radiation fins 3 is less likely to be transmitted to the fixed member 13, so that the temperature rise of the magnetic core 12 can be further suppressed.

Further, according to the present embodiment, it is possible to suppress the temperature rise of the magnetic core 12 by the fixing member 13 having a small and simple structure. Therefore, since the temperature rise of the magnetic core 12 is suppressed, it is possible to suppress the increase in size of the lighting fixture 1 . In addition, it is possible to prevent the assembling process of the lighting device 1 from becoming complicated. Therefore, it is possible to obtain the lighting fixture 1 that is compact and easy to assemble while maintaining the noise reduction effect.

Further, in this embodiment, it is not necessary to provide an air guide path for cooling the magnetic core 12 . Therefore, even if the first power supply device 6, the second power supply device 7, and the magnetic core 12 are accommodated in the case 4a, the temperature rise of the magnetic core 12 can be suppressed.

Further, the magnetic core 12 is provided at a position lower than the upper end of the first power supply device 6 or the upper end of the second power supply device 7 . Therefore, it is possible to prevent the lighting device 1 from becoming large in the height direction due to the provision of the magnetic core 12 . Therefore, when installing the lighting fixture 1 on the ceiling, it is possible to prevent the installation space in the height direction from being insufficient.

The shape of the fixing member 13 is not limited to that shown in FIG. The fixing member 13 is sufficient as long as it can hold the magnetic core 12 away from the radiation fins 3 . For example, the fixing member 13 may be sandwiched between the second power supply device 7 and the heat dissipation fins 3 . Moreover, the fixing member 13 may be sandwiched between both the first power supply device 6 and the heat dissipation fins 3 and between the second power supply device 7 and the heat dissipation fins 3 . In this case, the fixing member 13 is, for example, T-shaped. Alternatively, the fixing member 13 may hold the magnetic core 12 away from the light source 2, other electronic components, or heating elements. Also, a plurality of magnetic cores 12 may be fixed to one fixing member 13 .

Further, in the present embodiment, the magnetic core 12 is held by the fixing member 13 so as to face the second surface 3b. That is, the magnetic core 12 is held such that the axis of the magnetic core 12 is perpendicular to the second surface 3b. Alternatively, the magnetic core 12 may be held such that the axis of the magnetic core 12 is parallel to the second surface 3b. Further, the magnetic core 12 may be held tilted with respect to the second surface 3b.

Moreover, in the present embodiment, the first input wiring 8 and the second input wiring 9 are wound around one magnetic core 12 . Therefore, the number of magnetic cores 12 can be reduced compared to the case where the first input wiring 8 and the second input wiring 9 are wound around separate magnetic cores. By winding the first input wiring 8 and the second input wiring 9 around the magnetic core 12 in the same direction, the same noise as when the first input wiring 8 and the second input wiring 9 are wound around different magnetic cores can be suppressed. An inhibitory effect is obtained.

The number of turns on the magnetic core 12 can be freely set according to the output power of the power supply device 4 . The number of turns on the magnetic core 12 may be set larger, for example, as the output power or output current of the power supply device 4 is higher.

Also, the lighting fixture 1 of the present embodiment is provided with two light sources and two power supply devices. Not limited to this, the lighting fixture 1 may be provided with one or more light sources and one or more power supply devices.

FIG. 4 is a plan view of lighting fixture 201 according to a first modification of Embodiment 1. FIG. In the lighting fixture 201 , the first output wiring 10 that connects the first power supply device 6 and the first light source 2 a is wound around the magnetic core 12 . A second output wiring 11 that connects the second power supply device 7 and the second light source 2 b is wound around the magnetic core 12 . The first output wiring 10 and the second output wiring 11 are wound around the magnetic core 12 in the same direction. According to this configuration, it is possible to suppress noise that enters the wiring to the light source 2 . The first modification is particularly effective when the noise entering the wiring to the light source 2 is large.

FIG. 5 is a plan view of a lighting fixture 301 according to a second modification of the first embodiment. A lighting fixture 301 includes a plurality of magnetic cores 12a and 12b. A plurality of magnetic cores 12 a and 12 b are fixed to the fixing member 13 . Alternatively, the fixing member 13 may be provided separately for each of the plurality of magnetic cores 12a and 12b.

The first input wiring 8 and the second input wiring 9 are wound in the same direction around the magnetic core 12a. The first output wiring 10 and the second output wiring 11 are wound in the same direction around the magnetic core 12b. With such a configuration, the noise reduction effect can be improved more than that of the lighting fixtures 1 and 201 .

FIG. 6 is a diagram for explaining an example of the result of noise measurement of interference wave power. Noise was measured in accordance with the international standard CISPR (Comite International Special des Perturbations Radioelectrics) 15 "Permissible values and measurement methods for radio interference characteristics of electric lighting and similar equipment". The graph of the comparative example in FIG. 6 shows the result of noise measurement in a lighting fixture in which one wiring is wound around one magnetic core 12 . That is, in the comparative example, the first input wiring 8 , the second input wiring 9 , the first output wiring 10 and the second output wiring 11 are wound around separate magnetic cores 12 . In the graph of the comparative example, solid line 81 indicates the peak value of the measurement results, and solid line 82 indicates the limit value of noise. The limit is the quasi-peak value (QP value).

On the other hand, in the second modification, the first input wiring 8 and the second input wiring 9 are wound around one magnetic core 12a. Also, the first output wiring 10 and the second output wiring 11 are wound around one magnetic core 12b. In the graph of the second variant, the solid line 83 indicates the peak value of the measurement result, and the solid line 84 indicates the quasi-peak value of the noise limit. The peak values and quasi-peak values were re-measured at frequencies where the peak values of the measurement results indicated by solid lines 81 and 83 exceeded the noise quasi-peak values indicated by solid lines 82 and 84 . Re-measurements confirmed that the measured quasi-peaks were less than or equal to the noise quasi-peaks shown in solid lines 82,84.

The noise level is the same between the comparative example and the second modified example. Therefore, even if wires from a plurality of power supply devices are wound around one magnetic core 12, the same effect as in the comparative example can be obtained. As described above, according to the present embodiment, in the lighting fixture 1 having a plurality of power supply devices, the lighting fixture 1 can be made smaller by reducing the number of magnetic cores while maintaining the noise suppression effect.

In general, a lighting fixture that consumes a large amount of power may have a plurality of built-in power supply devices. Such luminaires are used, for example, in high ceilings. In this case, providing a noise filter for each of the plurality of power supply devices may increase costs, complicate the assembly process, and increase the size of lighting fixtures. In particular, the ferrite ring requires a space for winding wiring, so it occupies a large installation area compared to other electronic components. For this reason, if a plurality of magnetic cores 12 are provided, there is a risk that miniaturization of the electronic device will be hindered. Moreover, in lighting fixtures provided with a plurality of power supply devices, a method for efficiently reducing noise has not generally been assumed.

On the other hand, in this embodiment, wires from a plurality of power supply units are wound around one magnetic core 12 . Therefore, since the number of magnetic cores 12 can be reduced, noise can be efficiently suppressed in a small space. Also, since the number of magnetic cores 12 can be reduced, the manufacturing cost can be reduced. Furthermore, the assembly of the lighting fixture 1 can be implemented easily. Therefore, the magnetic core 12 can be easily installed.

These modifications can be appropriately applied to lighting devices and lighting fixtures according to the following embodiments. Note that the lighting device and the lighting fixture according to the following embodiment have many points in common with the first embodiment, so the explanation will focus on the points of difference from the first embodiment.

Embodiment 2.
FIG. 7 is a plan view of a lighting fixture 401 according to Embodiment 2. FIG. The luminaire 401 differs from the luminaire 301 in that a plurality of poles 14 are provided on the outer peripheral portions of the first power supply device 6 and the second power supply device 7 . The pole 14 corresponds to a wire support member that supports the first wire and the second wire. The pole 14 is, for example, a rod-shaped member. A plurality of poles 14 are erected and attached to the first power supply device 6 and the second power supply device 7 . The pole 14 may be provided on the radiation fins 3 .

A portion of the pole 14 is provided outside the first substrate 6 c in the first power supply device 6 . A part of the pole 14 is provided outside the first input terminal 6 a and the first output terminal 6 b in the first power supply device 6 . Similarly, part of the pole 14 is provided outside the second substrate 7c in the second power supply device 7 . A part of the pole 14 is provided outside the second input terminal 7a and the second output terminal 7b in the second power supply device 7 .

The first input wiring 8 extends from the input section 5 through the outside of the pole 14 and reaches the magnetic core 12a. Also, the first input wiring 8 extends from the magnetic core 12a through the outside of the pole 14 to reach the first input terminal 6a. Similarly, the second input wiring 9 extends from the input section 5 through the outside of the pole 14 to reach the magnetic core 12a. Also, the second input wiring 9 extends from the magnetic core 12a through the outside of the pole 14 to reach the second input terminal 7a.

The first output wiring 10 extends from the magnetic core 12b through the outside of the pole 14 to reach the first light source 2a. The second output wiring 11 extends from the second output terminal 7b through the outside of the pole 14 to reach the magnetic core 12b. Also, the second output wiring 11 extends from the magnetic core 12 through the outside of the pole 14 to reach the second light source 2b.

Thus, the first input wiring 8 drawn out from the first power supply device 6 detours away from the center of the first power supply device 6 and reaches the magnetic core 12a. The pole 14 supports the first input wiring 8 and makes a detour away from the center of the first power supply device 6 . Depending on the position of the magnetic core 12, the first input wiring 8 may detour away from the center of the second power supply 7 and reach the magnetic core 12a. Similarly, the second input wiring 9 drawn out from the second power supply device 7 is supported by the pole 14, detours away from the center of the second power supply device 7, and reaches the magnetic core 12a.

Further, the second output wiring 11 drawn out from the second power supply device 7 is supported by the pole 14, detours away from the center of the second power supply device 7, and reaches the magnetic core 12b. Similarly, the first output wiring 10 drawn out from the first power supply device 6 may be supported by the pole 14 and detour away from the center of the first power supply device 6 to reach the magnetic core 12b.

Also, the first input wiring 8 drawn out from the magnetic core 12 a is supported by the pole 14 , detours away from the center of the second power supply device 7 , and reaches the input section 5 . Depending on the position of the input section 5 , the first input wiring 8 may be supported by the pole 14 and routed away from the center of the first power supply device 6 to reach the input section 5 . Similarly, the second input wiring 9 pulled out from the magnetic core 12 a is supported by the pole 14 and detours away from the center of the second power supply 7 to reach the input section 5 .

Further, the first output wiring 10 led out from the magnetic core 12b is supported by the pole 14, detours away from the center of the first power supply device 6, and reaches the first light source 2a. Similarly, the second output wiring 11 drawn out from the magnetic core 12b is supported by the pole 14, detours away from the center of the second power supply device 7, and reaches the second light source 2b.

Noise may be radiated from the first power supply device 6 and the second power supply device 7 and transmitted to wiring. On the other hand, in the present embodiment, poles 14 are used to connect wiring via the outer peripheral portion of power supply device 4 . In this embodiment, the wiring runs through a position farther from the center of the substrate than the lighting device 301 . In other words, the wiring can be separated from the noise source as compared with the lighting fixture 301 . Moreover, in this embodiment, the length of the portion of the wiring that passes directly above the substrate can be shortened compared to the case where the wiring is connected in a straight line. Therefore, radiation noise transmitted from the first power supply device 6 and the second power supply device 7 to the wiring can be suppressed. This embodiment can be expected to be effective particularly when the frequency of the power supply device 4 is high.

The number and installation location of the poles 14 can be freely set according to the shape of the lighting fixture 401 or the power supply device 4 . Moreover, the shape of the pole 14 does not matter. The pole 14 only needs to support wiring so as to pass through the outer peripheral portion of the first power supply device 6 or the second power supply device 7 .

Embodiment 3.
FIG. 8 is a plan view of a lighting device 501 according to Embodiment 3. FIG. The luminaire 501 has a signal input section 15 . A signal is input to the signal input unit 15 from the outside. The power supply device 4 can communicate with the outside via the signal input unit 15 .

A first signal input terminal 6d is provided on the first substrate 6c. The first signal line 16 connects the first signal input terminal 6 d and the signal input section 15 . The first control section of the first power supply device 6 controls the first lighting circuit according to the signal input from the first signal input terminal 6d.

A second signal input terminal 7d is provided on the second substrate 7c. The second signal line 17 connects the second signal input terminal 7 d and the signal input section 15 . The second control section of the second power supply 7 controls the second lighting circuit according to the signal input from the second signal input terminal 7d.

The first signal line 16 and the second signal line 17 are wound around the magnetic core 12 in the same direction.

Noise may also be superimposed on the signal line. On the other hand, in the present embodiment, noise propagating through the signal line can be suppressed. This embodiment is particularly effective when the power supply device 4 communicates at high speed.

As a modified example of this embodiment, the lighting device 501 may be provided with the pole 14 of the second embodiment. In this case, the first signal line 16 and the second signal line 17 are supported by the pole 14 and reach the signal input section 15 via the outer periphery of the first power supply device 6 or the second power supply device 7 . Thereby, noise transmitted from the first power supply device 6 and the second power supply device 7 to the first signal line 16 and the second signal line 17 can be suppressed.

Moreover, the technical features described in each embodiment may be used in combination as appropriate.

REFERENCE SIGNS LIST 1 luminaire 2 light source 2a first light source 2b second light source 3 radiation fin 3a first surface 3b second surface 4 power supply device 4a case 5 input section 6 first power supply device 6a second 1 input terminal 6b first output terminal 6c first substrate 6d first signal input terminal 7 second power supply device 7a second input terminal 7b second output terminal 7c second substrate 7d second signal input terminal, 8 first input wiring, 9 second input wiring, 10 first output wiring, 11 second output wiring, 12, 12a, 12b magnetic core, 13 fixing member, 13a first portion, 13b second portion, 14 Pole 15 Signal input section 16 First signal line 17 Second signal line 20 Connection section 21 Fixture 201, 301, 401, 501 Lighting fixture

Claims (12)

a first power supply device for lighting a light source;
a second power supply device for lighting the light source;
a magnetic core;
a first electric wire that connects the first power supply device and the outside via the magnetic core and is wound around the magnetic core;
a second electric wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core;
with
The lighting device , wherein the magnetic core is provided between the first power supply device and the second power supply device . The lighting device according to claim 1 , wherein the first electric wire and the second electric wire are wound around the magnetic core in the same direction. 3. The lighting device according to claim 1, wherein each of the first electric wire and the second electric wire is wound around the magnetic core multiple times. Equipped with an input section that receives power from an external power supply,
The first wire includes a wire connecting the first power supply device and the input unit,
The lighting device according to any one of claims 1 to 3 , wherein the second electric wire includes an electric wire that connects the second power supply device and the input section. The first wire includes a wire connecting the first power supply device and the light source,
The lighting device according to any one of claims 1 to 4 , wherein the second electric wire includes an electric wire that connects the second power supply device and the light source. a first power supply device for lighting a light source;
a second power supply device for lighting the light source;
a magnetic core;
a first electric wire that connects the first power supply device and the outside via the magnetic core and is wound around the magnetic core;
a second electric wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core;
a signal input section to which a signal is input from the outside;
with
The first wire includes a wire connecting the first power supply device and the signal input unit,
The lighting device, wherein the second electric wire includes an electric wire that connects the second power supply device and the signal input section. a first power supply device for lighting a light source;
a second power supply device for lighting the light source;
a magnetic core;
a first electric wire that connects the first power supply device and the outside via the magnetic core and is wound around the magnetic core;
a second electric wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core;
with
The lighting , wherein the first electric wire pulled out from the first power supply detours away from the center of the first power supply or the second power supply and reaches the magnetic core. Device. a first power supply device for lighting a light source;
a second power supply device for lighting the light source;
a magnetic core;
a first electric wire that connects the first power supply device and the outside via the magnetic core and is wound around the magnetic core;
a second electric wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core;
with
The lighting device, wherein the first electric wire pulled out from the magnetic core detours away from the center of the first power supply device or the second power supply device and is connected to the outside. . 9. The lighting device according to claim 7 , further comprising an electric wire support member that supports the first electric wire and makes a detour away from the central portion. a first power supply device for lighting a light source;
a second power supply device for lighting the light source;
a magnetic core;
a first electric wire that connects the first power supply device and the outside via the magnetic core and is wound around the magnetic core;
a second electric wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core;
a support holding the light source;
a fixing member that holds the magnetic core apart from the support;
A lighting device comprising: a first power supply device for lighting a light source;
a second power supply device for lighting the light source;
a magnetic core;
a first electric wire that connects the first power supply device and the outside via the magnetic core and is wound around the magnetic core;
a second electric wire that connects the second power supply device to the outside via the magnetic core and is wound around the magnetic core;
with
The lighting device, wherein the magnetic core is separated from the light source, the first power supply device, and the second power supply device. a lighting device according to any one of claims 1 to 11 ;
the light source;
A lighting fixture comprising:

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