Lighting tool, illumination device, and wiring method of illumination device

Abstract

To provide a lighting tool, an illumination device, and a wiring method for the illumination device in which electromagnetic compatibility is achieved.SOLUTION: A lighting tool includes: a light source part; a long support body in which the light source part is disposed on one surface side; a primary-side wire serving as a path for supplying a primary-side power to a power source for generating a secondary-side power supplied to the light source part; and a secondary-side wire as a path for supplying the secondary-side power from the power source part to the light source part. Each of the primary-side wire and the secondary-side wire is disposed along a longitudinal direction of the support body on the other surface side of the support body. In a cross section vertical with the longitudinal direction of the support body, the secondary-side wire is disposed on one end side in a short direction of the support body from a center part in the short direction of the support body. In the cross section, the primary-side wire is disposed on the other end side in the short direction of the support body from the center part.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a lighting fixture, a lighting device, and a wiring method for a lighting device. [Background technology]

[0002] Patent Document 1 describes a light-emitting diode lamp tube. This light-emitting diode lamp tube has a case. The internal space of the case is divided into a drive area in which a power supply drive module is attached and a lighting area in which a light-emitting diode module is attached. Both ends of the power supply drive module are connected to electrodes on both sides of the case by AC wires. The power supply drive module converts AC power into DC power. The DC power is connected to the light-emitting diode module in the lighting area by DC wires. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3164418 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned LED lamp, since both the DC and AC wires are connected to the power supply drive module, it is difficult to prevent the DC and AC wires from being close to each other near the power supply drive module, which causes a problem that high frequency signals flowing through the DC wire are easily transmitted to the AC wire, resulting in a decrease in electromagnetic compatibility.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a lighting fixture, a lighting device, and a wiring method for a lighting device that can improve electromagnetic compatibility. [Means for solving the problem]

[0006] The lighting fixture according to the present disclosure comprises a light source unit, a long support body on one side of which the light source unit is arranged, a primary electric wire which is a path for supplying primary power to a power supply unit which generates secondary power to be supplied to the light source unit, and a secondary electric wire which is a path for supplying the secondary power from the power supply unit to the light source unit, wherein each of the primary electric wire and the secondary electric wire is arranged along the longitudinal direction of the support body on the other side of the support body, and in a cross section perpendicular to the longitudinal direction of the support body, the secondary electric wire is arranged closer to one end of the support body in the lateral direction than the center of the support body in the lateral direction, and in the cross section, the primary electric wire is arranged closer to the other end of the support body in the lateral direction than the center of the support body.

[0007] The lighting device according to the present disclosure comprises a light source unit, a long support body having the light source unit arranged on one side thereof, a power supply unit that generates secondary power to be supplied to the light source unit, and a secondary electric wire that is a path for supplying the secondary power from the power supply unit to the light source unit, an appliance that is installed on an attachment portion and has a lamp housing portion to which the lamp is attached, and a primary electric wire that is a path for supplying primary power to another lighting device that is arranged adjacently, wherein the other side of the support body faces the lamp housing portion, the secondary electric wire is arranged along the longitudinal direction of the support body on the other side, and the primary electric wire is arranged along the longitudinal direction of the support body in the lamp housing portion, and in a cross section perpendicular to the longitudinal direction of the support body, the secondary electric wire is arranged closer to one end side in the lateral direction of the support body than a center part in the lateral direction of the support body, and in the cross section, the primary electric wire is arranged closer to the other end side in the lateral direction of the support body than the center part.

[0008] A wiring method for a lighting device according to the present disclosure is a wiring method for a lighting device having a lamp including a light source unit, a long support body on one side of which the light source unit is arranged, a primary electric wire which is a path for supplying primary power to a power supply unit which generates secondary power to be supplied to the light source unit, and a secondary electric wire which is a path for supplying the secondary power from the power supply unit to the light source unit, wherein, on the other side of the support body, the secondary electric wire is arranged along the longitudinal direction of the support body, closer to one end in the lateral direction of the support body than the center in the lateral direction of the support body, and the primary electric wire is arranged along the longitudinal direction of the support body, closer to the other end in the lateral direction of the support body than the center in the lateral direction of the support body, on the other side of the support body [Effects of the Invention]

[0009] According to the present disclosure, electromagnetic compatibility can be improved. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view of an illumination device according to a first embodiment. [Figure 2] 1 is an exploded perspective view of a lighting device according to a first embodiment. [Figure 3] 1 is a perspective view of a lighting fixture according to a first embodiment. [Figure 4] 1 is a perspective view showing a configuration of a main part of a lighting fixture according to a first embodiment. [Figure 5] 1 is a top view showing the configuration of a main part of a lighting fixture according to a first embodiment. [Figure 6] 1 is a cross-sectional view of a lighting fixture according to a first embodiment. [Figure 7] FIG. 7 is an enlarged cross-sectional view showing a main part of FIG. 6. [Figure 8] 1 is a block diagram of a lighting device according to a first embodiment. [Figure 9] 4 is a flowchart showing the flow of a wiring method for the lighting device according to the first embodiment. [Figure 10] FIG. 10 is a block diagram of a lighting device according to Modification 1-1 of Embodiment 1. [Figure 11]FIG. 10 is a perspective view showing the configuration of a main part of a fixture of an illumination device according to a second embodiment. [Figure 12] FIG. 10 is a block diagram of a lighting device according to a second embodiment. [Figure 13] 10 is a flowchart showing the flow of a wiring method for an illumination device according to a second embodiment. [Figure 14] 10 is a bottom view showing the configuration of a fixture of an illumination device according to Modification 2-1 of Embodiment 2. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Embodiments of the present disclosure will be described below with reference to the drawings. The present disclosure is not limited to the following embodiments and can be modified in various ways without departing from the spirit and scope of the present disclosure. Furthermore, the present disclosure includes all possible combinations of the configurations shown in the following embodiments. In particular, the combinations of components are not limited to those in each embodiment; components described in one embodiment can be applied to another embodiment. In the following description, directional terms (e.g., "up," "down," "right," "left," "front," "rear," etc.) are used as appropriate to facilitate understanding, but these are for explanatory purposes and do not limit the present disclosure. In each drawing, components designated with the same reference numerals are identical or equivalent, and this applies throughout the entire specification. Note that the relative dimensional relationships or shapes of each component in each drawing may differ from those in reality.

[0012] Embodiment 1 A lamp, a lighting device, and a wiring method for a lighting device according to embodiment 1 will be described. Fig. 1 is a perspective view of the lighting device according to this embodiment. Fig. 2 is an exploded perspective view of the lighting device according to this embodiment. Figs. 1 and 2 show the configuration of the lighting device as viewed from below.

[0013] As shown in Figs. 1 and 2, the lighting device 10 includes a lighting fixture 20 and an appliance 40. The lighting fixture 20 is a light source unit having a light source section 21 for illuminating an illumination space. The appliance 40 is used to install the lighting fixture 20 on a ceiling or the like. The lighting device 10, the lighting fixture 20, and the appliance 40 are all formed in an elongated shape that is long in one direction.

[0014] The fixture 40 is attached to a mounting surface such as a ceiling using a hanging bolt 102. The fixture 40 has a main body 41 and a pair of end plate portions 42 installed at both ends of the main body 41 in the longitudinal direction. The main body 41 is formed with a lamp housing portion 41a that houses the lamp 20. The lamp housing portion 41a extends along the longitudinal direction of the fixture 40. The lamp housing portion 41a is formed in a concave shape in a cross section perpendicular to the longitudinal direction of the fixture 40.

[0015] The lamp housing 41a has a main surface 41a1 and a pair of side walls 41a2, 41a3. The main surface 41a1 is disposed facing the mounting portion. A through hole 41b is formed in the main surface 41a1. Each of the side walls 41a2, 41a3 extends from a side end of the main surface 41a1 toward the lighting space. The side wall 41a2 is formed at one end of the lamp housing 41a in the short-side direction of the fixture 40. The side wall 41a3 is formed at the other end of the lamp housing 41a in the short-side direction of the fixture 40. The main body 41 has a pair of reflectors 41c extending laterally from the lower end of each of the side walls 41a2, 41a3 toward the mounting portion.

[0016] A power line 101, which is wired in the ceiling or the like, is drawn into the lamp housing 41a via the through hole 41b. The power line 101 is commonly referred to as an F cable. A terminal block 43 is arranged on the main surface 41a1 as a power connector. The power line 101 drawn into the lamp housing 41a is connected to the terminal block 43. The terminal block 43 relays the power supply to the lamp 20. In general, the through hole 41b and the terminal block 43 are often arranged near the center of the lamp 40 in the longitudinal direction.

[0017] The terminal block 43 and the power supply unit of the lighting fixture 20 are connected via a fixture-side electric wire 44, a fixture-side connector 44a, a lighting fixture-side connector 29a, and a lighting fixture-side electric wire 29. The fixture-side electric wire 44 and the lighting fixture-side electric wire 29 are each part of a primary electric wire. In other words, the fixture-side electric wire 44 is the primary electric wire on the fixture 40 side, and the lighting fixture-side electric wire 29 is the primary electric wire on the lighting fixture 20 side. In this embodiment, on both the fixture 40 side and the lighting fixture 20 side, two primary electric wires are bundled together with one earth wire.

[0018] A connecting spring 45 for attaching the lamp 20 to the fixture 40 is disposed in the lamp housing 41a. The lamp 20 is provided with a connecting fitting 35. The lamp 20 is connected to the fixture 40 by engaging the connecting spring 45 with the connecting fitting 35. The connecting fitting may be provided in the lamp housing 41a, and the connecting spring may be provided in the lamp. The lamp 20 is disposed in the fixture 40 so as to cover the lamp housing 41a.

[0019] Fig. 3 is a perspective view of a lamp according to this embodiment. Fig. 4 is a perspective view showing the main configuration of the lamp according to this embodiment. Fig. 5 is a top view showing the main configuration of the lamp according to this embodiment. Fig. 6 is a cross-sectional view of the lamp according to this embodiment. Fig. 7 is a cross-sectional view showing an enlarged view of the main part of Fig. 6. Figs. 6 and 7 show cross sections perpendicular to the longitudinal direction of the lamp 20 and the support body 24. The left-right direction in Figs. 6 and 7 represents the short-side direction of the lamp 20 and the support body 24.

[0020] 3 to 7, the light source unit 21 has a light emitting element (LED) 22 and a light source substrate 23. In the present embodiment, a solid-state light emitting element such as an LED package is used in the light source unit 21. The light source unit 21 may also use a laser light source, an organic EL light source, or other advanced light source.

[0021] The material of the light source substrate 23 can be a general-purpose substrate that combines a base material such as paper, glass, ceramic, or metal with a resin such as phenol, epoxy, polyimide, or fluorine. Furthermore, flame-retardant materials such as FR-1 to FR-5, CEM-1, CEM-3, or GPY may be used as needed. Furthermore, the shape of the light source substrate 23 can be any suitable shape, such as a rectangle, polygon, or circle including an ellipse, depending on the product specifications of the light source unit 21. The number of light source substrates 23 may be any number equal to or greater than one.

[0022] The support 24 is formed in an elongated shape. The support 24 is formed by roll forming, pressing, or the like on a plate material such as a steel plate, or by extrusion using a metal material such as aluminum or magnesium, or a resin material. The support 24 may be formed by three-dimensional molding (3D printing). The support 24 may be painted or surface-treated to improve the insulating properties of the support 24. The cross-sectional shape of the support 24 may be a square, U-shape, L-shape, M-shape, arc-shape, circle, or the like, or may be elongated.

[0023] The light source unit 21 is disposed on one surface 24a of the support 24, i.e., the underside of the support 24 in FIG. 6 . In this embodiment, the light source substrate 23 is adhesively fixed to the one surface 24a of the support 24 using an adhesive. In this case, it is preferable to select an adhesive with good thermal conductivity. This allows heat generated from the light source unit 21 to be efficiently transferred to the support 24, improving the heat dissipation of the light source unit 21 and thereby extending the life of the light source unit 21 and the lighting device 10. The light source substrate 23 may also be fixed to the support 24 using double-sided tape. Alternatively, the support 24 may be processed and the light source substrate 23 may be mechanically fixed to the support 24 using support pieces provided on the support 24. Furthermore, the light source substrate 23 may also be fixed to the support 24 using fixing members such as screws or rivets.

[0024] The above-described method for fixing the light source substrate 23 to the support 24 can also be applied when fixing the power supply unit to the support 24. By properly fixing the power supply unit to the support 24, heat generated from the power supply can be efficiently transferred to the support 24, which ultimately extends the life of the power supply unit and the lighting device 10.

[0025] A light-transmitting cover 25 is disposed so as to cover the light source unit 21 disposed on one surface 24a of the support body 24. Side wall portions 24c1 and 24c2 are provided on both ends in the short direction, i.e., the width direction, of the support body 24 so as to protrude toward the other surface 24b of the support body 24. The cover 25 is fitted into the support body 24 so as to be engaged with the side wall portions 24c1 and 24c2.

[0026] The cover 25 is arranged to prevent the worker or user from accidentally touching the light source unit 21 directly or to prevent foreign objects from coming into contact with the light source unit 21. The cover 25 is also arranged to diffuse the light so that the user does not feel uncomfortable dazzled by looking directly at the light emitted from the light source unit 21. In other words, the provision of the cover 25 protects the light source unit 21, the worker, and the user, and adjusts the characteristics of the emitted light.

[0027] A certain distance is provided between the light source unit 21 and the cover 25. If the cover 25 has diffusibility, the degree of light diffusion varies depending on this distance, thereby reducing the graininess of the light source unit 21 felt by the user. The cover 25 may be made of a resin material such as polycarbonate (PC) or acrylic (PMMA), or a glass material. Other materials may also be used for the cover 25 as long as they are translucent. The cover 25 may also be made diffusible by adding a diffusing material. The cover 25 is formed into a desired shape using a molding method such as extrusion molding, injection molding, or three-dimensional modeling.

[0028] On the other surface 24b of the support body 24, there are arranged a power supply unit 26 for supplying a predetermined power to the light source board 23, a lamp-side electric wire 29 for supplying AC power to the power supply unit 26, and a secondary-side electric wire 27 for supplying DC power output from the power supply unit 26 to the light source board 23. For example, if the light source unit 21 is of a monochromatic specification, that is, a fixed color temperature specification that does not have a color temperature adjustment function, two secondary-side electric wires 27 (one set, one system) for a positive side and a negative side of DC are arranged. Each secondary-side electric wire 27 connects the power supply unit 26 and the light source board 23 via one end of the support body 24 in the longitudinal direction.

[0029] On the other hand, if the light source unit 21 is a variable color temperature light source, i.e., one with a color temperature adjustment function, the variable color temperature specification is realized by supplying two independent systems of direct current to each of the LED package groups of two different emission colors. Examples of the two emission colors include a color temperature of 6500K and a color temperature of 2700K. In this case, the power supply unit 26 and the light source board 23 require not only two secondary-side electric wires 27 passing through one longitudinal end of the support 24, but also two additional secondary-side electric wires 27 passing through the other longitudinal end of the support 24. For example, in the case of two emission colors of 6500K and 2700K, two secondary-side electric wires 27 (positive and negative) for 6500K and two secondary-side electric wires 27 (positive and negative) for 2700K are required. Therefore, the total number of secondary-side electric wires 27 is four (two sets, two systems). In this embodiment, each of the two sets of secondary side electric wires 27 connecting the power supply unit 26 and the light source board 23 via both longitudinal ends of the support body 24 is held at each of the longitudinal ends of the support body 24 using an end electric wire holder 31.

[0030] When the secondary side electric wires 27 for connecting the power supply unit 26 and the light source board 23 are wired not only through one end of the support body 24 but also through both end portions, it is necessary to wire the lamp side electric wires 29 and the secondary side electric wires 27 in parallel in a part of the other surface 24b of the support body 24.

[0031] At least a portion of the lighting fixture-side electric wires 29 is arranged on the other surface 24b of the support body 24 from one end of the power supply unit 26 in the longitudinal direction of the support body 24 to the point where it is connected to the terminal block 43 of the fixture 40. The secondary-side electric wires 27 are arranged on the other surface 24b of the support body 24 from the other end of the power supply unit 26 in the longitudinal direction of the support body 24 to both ends of the support body 24. Therefore, on the other surface 24b of the support body 24, the lighting fixture-side electric wires 29 and one of the two sets of secondary-side electric wires 27 are parallel to each other.

[0032] If the length of the lamp-side electric wire 29 between one end of the power supply unit 26 and the terminal block 43 of the fixture 40 is L1, the length L2 of the portion where the lamp-side electric wire 29 and the secondary-side electric wire 27 are parallel to each other is equal to or less than L1. In this embodiment, the length L1 of the lamp-side electric wire 29 is approximately 500 mm. Therefore, in this embodiment, the length L2 of the portion where the lamp-side electric wire 29 and the secondary-side electric wire 27 are parallel to each other is equal to or less than 500 mm.

[0033] To prevent the lamp-side electric wire 29 from being pulled and coming off during installation of the lighting device 10, the lamp-side electric wire 29 is mechanically fixed to the other surface 24b of the support body 24 to provide tension relief. The lamp-side electric wire 29 is tension-retained by a wire fastener 28 provided on the other surface 24b. The wire fastener 28 is provided on the wiring path of the lamp-side electric wire 29. The wire fastener 28 is fixed to the support body 24 using a screw. The wire fastener 28 is provided in the center of the support body 24 in the longitudinal direction to prevent the lamp-side electric wire 29 from being pinched between the lamp fixture 40 and the lamp 20 when the lamp 20 is attached to the lamp fixture 40. The lamp-side electric wire 29 is fixed by being wound around the wire fastener 28.

[0034] When the lighting fixture 20 is attached to the fixture 40, the portion of the lighting fixture-side wire 29 that is closer to the lighting fixture-side connector 29a than the portion fixed to the wire fastener 28 is pulled toward the main surface 41a1 on which the terminal block 43 is arranged. Therefore, when the lighting fixture 20 is attached to the fixture 40, the portion of the lighting fixture-side wire 29 that is closer to the lighting fixture-side connector 29a than the portion fixed to the wire fastener 28 is separated from the secondary-side wire 27.

[0035] The portion of the lamp-side electric wire 29 extending from the power supply unit 26 to the portion fixed to the wire fastener 28 is arranged on the other surface 24b of the support body 24, similar to the secondary-side electric wire 27. The lamp-side electric wire 29 and the secondary-side electric wire 27 are arranged so as to maintain as wide a distance as possible between them. That is, on the other surface 24b of the support body 24, the lamp-side electric wire 29 is arranged in an area opposite to the secondary-side electric wire 27, with the central portion of the support body 24 in the lateral direction sandwiched therebetween. The lamp-side electric wire 29 is arranged on one side wall 24c1 of the support body 24 and along the side wall 24c1. The secondary-side electric wire 27 is arranged on the other side wall 24c2 of the support body 24 and along the side wall 24c2.

[0036] For example, when the distance between the side wall portion 24c1 and the side wall portion 24c2 is D1, it is preferable that the distance D2 between the lamp side wire 29 and the secondary side wire 27 is equal to or greater than half of the distance D1 (D2≧0.5×D1). In this embodiment, the position where the distance between the lamp side wire 29 and the secondary side wire 27 is smallest is the portion where the lamp side wire 29 is fixed by the wire fixing device 28. The minimum distance D2min between the lamp side wire 29 and the secondary side wire 27 is approximately 28 mm.

[0037] If the primary and secondary electric wires are arranged parallel to each other or cross each other while in contact or close proximity, they will affect the EMC noise level and interfere with each other. Therefore, it is preferable that the lamp-side electric wires 29 and the secondary-side electric wires 27 be arranged apart from each other in areas on different sidewalls 24c1 and 24c2, with respect to the center of the support body 24 in the lateral direction. In this embodiment, the lamp-side electric wires 29 are arranged closer to the sidewall 24c1 than the center of the support body 24 in the lateral direction. The secondary-side electric wires 27 are arranged closer to the sidewall 24c2 than the center of the support body 24 in the lateral direction.

[0038] The lamp-side electric wires 29 and the secondary-side electric wires 27 may be arranged so as to contact the side wall portions of the support body 24, or may be arranged at a distance from the side wall portions. The lamp-side electric wires 29 and the secondary-side electric wires 27 may be arranged at a distance from each other across the center portion in the lateral direction of the support body 24 (0 <D2<D1)。

[0039] For example, the distance D1 between the side wall portion 24c1 and the side wall portion 24c2 on the other surface 24b of the support body 24 is set to 56 mm. The wire diameter of the lamp side electric wire 29 including the coating is set to φ1. The wire diameter of the secondary side electric wire 27 including the coating is set to φ2. The lamp side electric wire 29 and the secondary side electric wire 27 are arranged inside the lamp housing portion 41a formed by the other surface 24b, the side wall portion 24c1 and the side wall portion 24c2. The distance D3 between the lamp side electric wire 29 and the inner surface of one of the side wall portions, and the distance D4 between the secondary side electric wire 27 and the inner surface of the other side wall portion are each set to 1 mm. In this case, the distance D2 between the lamp side electric wire 29 and the secondary side electric wire 27 is set to D2=D1(56mm)-D3(1mm)-D4(1mm)-2×φ1-2×φ2 If D3 and D4 are both set to 0 mm, the distance D2 between the lamp-side electric wire 29 and the secondary-side electric wire 27 becomes the maximum distance D2max.

[0040] The distance D1 between the side wall portions 24c1 and 24c2 does not necessarily have to be 56 mm. As long as the lighting fixture 20 can be attached to the fixture 40, the distance D1 may be 80 mm, for example. Here, it is desirable that the primary electric wires and the secondary electric wires are arranged in a position on the other surface 24b of the support body 24 from the longitudinal end toward the longitudinal center. This makes it possible to prevent the primary electric wires or the secondary electric wires from being pinched between the fixture 40 and the lighting fixture 20 when attaching the lighting fixture 20 to the fixture 40.

[0041] By arranging the lamp side electric wire 29 and the secondary side electric wire 27 as described above, the primary side electric wire and the secondary side electric wire do not interfere with each other, and EMC noise caused by the interference between the two can be suppressed.

[0042] The distance between the lamp side electric wire 29 and the secondary side electric wire 27 may be 1 mm as long as the lamp side electric wire 29 and the secondary side electric wire 27 do not come into contact with each other. It is desirable to adjust the distance between the lamp side electric wire 29 and the secondary side electric wire 27 so that EMC noise does not fall below the allowable value.

[0043] One known method for evaluating radiated interference generated by lighting equipment is to measure magnetic field noise using a large loop antenna. This method is specified by the International Special Committee on Radio Interference (CISPR) as an alternative method for measuring radiated interference in the frequency range of 30 MHz to 300 MHz generated by lighting equipment.

[0044] The inventors of the present application compared the noise level when the primary and secondary wires are arranged so that they are in contact over a distance of approximately 10 mm with the noise level when the primary and secondary wires are arranged in parallel with a distance of 10 mm or more, and confirmed that the noise level of the latter is approximately -8 dB better than the noise level of the former.

[0045] Noise tolerances are managed to comply with official regulations, which vary depending on product specifications. For example, when measured using the above method, the magnetic field noise level in the frequency range of 30 MHz to 100 MHz should preferably be approximately 64 dB to 54 dB or less.

[0046] Conducted interference generated by lighting equipment can be measured using, for example, a Coupling and Decoupling Network for Emission (CDNE). This method is specified by CISPR as an alternative method for measuring radiated interference generated by lighting equipment in the frequency range of 30 MHz to 300 MHz.

[0047] The inventors of the present application compared the noise level when the primary and secondary wires were placed in contact with each other over a distance of about 10 mm, as in the above case, with the noise level when the primary and secondary wires were placed in parallel with a distance of 10 mm or more, and confirmed that the noise level of the latter was improved by about -8 dB compared to the former.

[0048] Noise tolerances are managed to comply with official regulations that vary depending on product specifications. For example, when measured using the CDNE specified by CISPR, the noise level in the frequency range of 30 MHz to 100 MHz should be approximately 64 dB to 54 dB or less.

[0049] A method using an artificial network or an impedance stabilization network is known as a method for evaluating the noise terminal voltage, i.e., conducted emissions, transmitted via the power cable or communication cable of a lighting device. This method is specified by CISPR as a method for measuring the noise terminal voltage in the frequency range of 9 kHz to 30 MHz generated by lighting devices.

[0050] The inventors of the present application compared the quasi-peak value (QP value) and average value (AV value) when the primary and secondary wires were arranged so that they were in contact with each other over a distance of approximately 10 mm, and when the primary and secondary wires were arranged in parallel over a distance of 10 mm or more with a separation between them. As a result, it was confirmed that the quasi-peak value (QP value) of the latter was improved by approximately -4 dB compared to the quasi-peak value (QP value) of the former. It was also confirmed that the average value (AV value) of the latter was improved by approximately -4 dB compared to the average value (AV value) of the former.

[0051] The allowable values for the quasi-peak value (QP value) and average value (AV value) are managed to comply with official regulations, which vary depending on the product specifications. For example, when measured using the above method, the quasi-peak value (QP value) in the frequency range of 9 kHz to 30 MHz should preferably be below approximately 110 dB to 56 dB, and the average value (AV value) should preferably be below approximately 68 dB to 46 dB.

[0052] Fig. 8 is a block diagram of a lighting device according to this embodiment. As shown in Fig. 8, the lamp-side electric wire 29 is connected to a commercial AC power supply 103 via the fixture-side electric wire 44 and the power supply wire 101. In general, the primary-side electric wire serves as a supply path for commercial AC current from the commercial AC power supply 103. The voltage of the commercial AC power supply 103 is AC 100 V to AC 242 V, and the frequency of the commercial AC power supply 103 is 50 Hz or 60 Hz.

[0053] When an AC current is supplied to the conductor of the primary wire, an induced magnetic field due to electromagnetic induction is generated in the conductor of the primary wire. This induced magnetic field may generate current in the surrounding conductors. Furthermore, the commercial AC power supply 103 is located in an external environment. Therefore, disturbance noise entering the commercial AC power supply 103 from the external environment may affect the circuits connected to the power supply unit 26 and the secondary wire 27 directly through the primary wire or indirectly through electromagnetic induction. This may cause malfunction of the circuit or damage to circuit components.

[0054] In this embodiment, the secondary wires 27 supply the DC current generated by the power supply unit 26 to the light source unit 21. Normally, there is no voltage fluctuation in DC, but as described above, when an AC component is superimposed from the primary wires, for example, the light emitting element 22 may blink, or a flicker phenomenon may occur in which the brightness or hue of the light emitting element 22 when lit becomes unstable. Furthermore, when disturbance noise enters the secondary wires 27 from the external environment via the primary wires, the light emitting element 22 may unintentionally light up or be damaged.

[0055] To prevent such external influences, one method is to provide a shield on the secondary wire to prevent the intrusion of external disturbances, but this method has the problem of increasing material costs.

[0056] Generally, when DC and AC wires are wired close to each other, the magnetic field generated by the AC wires can act as a noise source and propagate to the DC wires, potentially causing malfunctions of lighting devices.

[0057] In the configuration described in Patent Document 1, the primary and secondary electric wires arranged on one side of the frame are wired parallel to each other in some places. If the primary and secondary electric wires are close to or in contact with each other, there is a risk that the electromagnetic compatibility of the light source unit and the lighting device will deteriorate. For example, there is a risk that the operation of the lighting device will become unstable due to the influence of noise entering from outside the lighting device, or that the noise emitted by the lighting device during operation will affect the operation of surrounding devices.

[0058] In this embodiment, the lamp side wire 29, which is the primary side wire, is arranged closer to the side wall 24c1 than the center in the short direction of the support body 24. The secondary side wire 27 is arranged closer to the side wall 24c2 than the center in the short direction of the support body 24. This allows the primary side wire and the secondary side wire to be arranged with a gap between them, thereby improving the electromagnetic compatibility of the lamp 20 and the lighting device 10 without increasing material costs.

[0059] Furthermore, by providing a gap between the primary electric wires and the secondary electric wires, it is possible to prevent the primary electric wires and the secondary electric wires from becoming entangled when manufacturing the lighting fixture 20 or when installing the lighting device 10. This improves the assembly (assembly ease) of the lighting fixture 20, improving workability, shortening the assembly time and leading to reduced manufacturing costs. Furthermore, the lighting device 10 improves the installability, shortening the installation time and leading to reduced installation costs.

[0060] If the lamp-side electric wires 29 and the secondary-side electric wires 27 arranged on the other surface 24b of the support body 24 are left as they are, they may become misaligned due to external factors during transportation or installation, and may overlap or cross. For this reason, it is desirable that the lamp-side electric wires 29 and the secondary-side electric wires 27 be held or fixed to the support body 24. In this embodiment, the lamp-side electric wires 29 and the secondary-side electric wires 27 are each held to the support body 24 using a wire-arranging member such as a wire holder 30. The wire holder 30 has a wire holding portion provided at either one end or both ends of the support body 24 in the short direction to hold the lamp-side electric wires 29 or the secondary-side electric wires 27.

[0061] In this embodiment, an electric wire holder 30 is used that includes two electric wire holding portions 30a, 30b and a connection portion 30c. The electric wire holder 30 is fixed to the other surface 24b of the support body 24. One electric wire holding portion 30a is arranged closer to the side wall portion 24c1 than the center portion in the short direction of the support body 24. A lamp side electric wire 29 is held by the electric wire holding portion 30a. The other electric wire holding portion 30b is arranged closer to the side wall portion 24c2 than the center portion in the short direction of the support body 24. A secondary side electric wire 27 is held by the electric wire holding portion 30b.

[0062] The connecting portion 30c connects the electric wire holding portion 30a and the electric wire holding portion 30b. The connecting portion 30c extends along the short direction of the support body 24. The electric wire holder 30 is fixed to the other surface 24b of the support body 24. For example, if the support body 24 is formed by extrusion processing using an aluminum material, the connecting portion 30c is fixed to the other surface 24b by, for example, a tap screw.

[0063] The lamp side electric wires 29 and the secondary side electric wires 27 may be fixed to the support body 24 using adhesive tape or the like. Alternatively, the lamp side electric wires 29 and the secondary side electric wires 27 may be fixed using resin parts at locations that have been processed in advance on the support body 24. The lamp side electric wires 29 and the secondary side electric wires 27 may be fixed by cutting and raising the support body 24 and bending the raised pieces. The lamp side electric wires 29 and the secondary side electric wires 27 may be fixed to the support body 24 by entangling them with a member for a different purpose that is fixed to the support body 24.

[0064] 9 is a flowchart showing the flow of a wiring method for a lighting device according to this embodiment. This wiring method is used in the installation work of the lighting device 10, including the assembly process of the lighting fixture 20. First, in step S1 of FIG. 9, one end of the secondary-side electric wire 27 is connected to the input terminal of the light source unit 21.

[0065] Next, in step S2, the secondary wires 27 are routed through the end portions of the support body 24 in the longitudinal direction, and are held at the end portions of the support body 24 in the longitudinal direction using the end wire holders 31.

[0066] Next, in step S3, the secondary wire 27 is placed on the other surface 24b side of the support body 24 at one end in the lateral direction of the support body 24 using the wire holding portion 30b.

[0067] Next, in step S4, the other end of the secondary wire 27 is connected to the output terminal of the power supply unit .

[0068] Next, in step S5, the excess length of the secondary side electric wire 27 is brought to the side of the power supply unit 26 and fixed so as not to slacken.

[0069] Next, in step S6, one end of the lamp-side electric wire 29, which is the primary-side electric wire, is connected to the input terminal of the power supply unit .

[0070] Next, in step S7, the lamp-side electric wire 29 is attached to the electric wire fastener 28. At this time, the lamp-side electric wire 29 is wound around the electric wire fastener 28 and thereby tensioned.

[0071] Next, in step S8, the wire fastener 28 is fixed to the support body 24 using a fastener such as a fixing screw. As a result, the lamp side wires 29 are arranged on the other surface 24b side of the support body 24, at the other end in the short direction of the support body 24. If necessary, the lamp side wires 29 are held using the wire holding portion 30a.

[0072] Next, in step S9, the other end of the lamp-side electric wire 29 is pulled in a direction away from the power supply unit 26 so that the lamp-side electric wire 29 does not become loose.

[0073] Through the above steps, the lamp-side electric wire 29 and the secondary-side electric wire 27 are wired to the lamp 20 of the lighting device 10.

[0074] (Variation 1-1) Fig. 10 is a block diagram of an illumination device according to Modification 1-1 of this embodiment. As shown in Fig. 10, this embodiment can also be applied to a lighting fixture 20 that is not color temperature variable but is monochromatic, i.e., has a fixed color temperature. In this case, two light source boards 23 are used in the light source unit 21. The power supply unit 26 and one of the light source boards 23 are connected by a secondary electric wire 27 that passes through one longitudinal end of the support body 24. The power supply unit 26 and the other light source board 23 are connected by a secondary electric wire 27 that passes through the other longitudinal end of the support body 24.

[0075] As described above, the lighting fixture 20 according to this embodiment includes the light source unit 21, the long support body 24, the lighting fixture electric wire 29, and the secondary side electric wire 27. The light source unit 21 is disposed on one surface 24a of the support body 24. The lighting fixture electric wire 29 is a path for supplying primary side power to the power supply unit 26. The power supply unit 26 generates secondary side power to be supplied to the light source unit 21. The secondary side electric wire 27 is a path for supplying secondary side power from the power supply unit 26 to the light source unit 21. Here, the lighting fixture electric wire 29 is an example of a primary side electric wire.

[0076] The lamp-side electric wires 29 and the secondary-side electric wires 27 are each arranged along the longitudinal direction of the support body 24 on the other surface 24b side of the support body 24. In a cross section perpendicular to the longitudinal direction of the support body 24, the secondary-side electric wires 27 are arranged closer to one end side in the lateral direction of the support body 24 than the center part in the lateral direction of the support body 24. In the above cross section, the lamp-side electric wires 29 are arranged closer to the other end side in the lateral direction of the support body 24 than the center part.

[0077] According to this configuration, the lamp-side electric wires 29 and the secondary-side electric wires 27 are arranged with a gap between them, which makes it possible to suppress EMC noise caused by mutual interference between the lamp-side electric wires 29 and the secondary-side electric wires 27. Therefore, it is possible to improve the electromagnetic compatibility of the lamp 20 and the lighting device 10.

[0078] Furthermore, with this configuration, the lighting fixture-side wires 29 and the secondary-side wires 27 are arranged with a gap between them, which prevents the lighting fixture-side wires 29 and the secondary-side wires 27 from becoming entangled when manufacturing the lighting fixture 20 or when installing the lighting device 10. Therefore, the lighting fixture 20 has improved assembly and workability, and the assembly time is shortened, which allows for reduced manufacturing costs. Furthermore, the lighting device 10 has improved installation ease and shortened installation time, which allows for reduced installation costs.

[0079] In the lighting fixture 20 according to this embodiment, the lighting fixture-side electric wire 29 is fixed to the support body 24 using an electric wire fastener 28 attached to the other surface 24b. This configuration can prevent the lighting fixture-side electric wire 29 from being pulled and coming off the power supply unit 26 when, for example, installing the lighting device 10.

[0080] In the lighting fixture 20 according to this embodiment, the secondary electric wire 27 is held by the support body 24 using the electric wire holding portion 30b attached to the other surface 24b. This configuration can prevent the secondary electric wire 27 from shifting in position, and therefore the distance between the lighting fixture electric wire 29 and the secondary electric wire 27 can be secured.

[0081] In the lighting fixture 20 according to this embodiment, the wire holding portion 30b may be disposed at either one end or the other end in the short direction of the support body 24. According to this configuration, the number of wire holding portions 30b provided on the support body 24 can be reduced, thereby reducing manufacturing costs.

[0082] In the lighting fixture 20 according to this embodiment, the wire holding portions 30a, 30b may be disposed at either one end or the other end in the short direction of the support body 24. This configuration increases the options for the arrangement position of the secondary wire 27.

[0083] The lighting device 10 according to this embodiment includes a lighting fixture 20 and an appliance 40. The appliance 40 is installed on a mounting portion such as a ceiling. The lighting fixture 20 is attached to the appliance 40. With this configuration, the lighting device 10 can achieve the same effects as those described above.

[0084] In the wiring method for the lighting device according to this embodiment, the secondary-side electric wires 27 are arranged along the longitudinal direction of the support body 24 on the other surface 24b side of the support body 24, closer to one end in the lateral direction of the support body 24 than the center in the lateral direction of the support body 24. Then, the lamp-side electric wires 29 are arranged along the longitudinal direction of the support body 24 on the other surface 24b side, closer to the other end in the lateral direction of the support body 24 than the center in the lateral direction of the support body 24.

[0085] According to this configuration, the lamp-side electric wires 29 and the secondary-side electric wires 27 are arranged with a gap between them, which makes it possible to suppress EMC noise caused by mutual interference between the lamp-side electric wires 29 and the secondary-side electric wires 27. Therefore, it is possible to improve the electromagnetic compatibility of the lamp 20 and the lighting device 10.

[0086] Embodiment 2 An illumination device and a wiring method for an illumination device according to embodiment 2 will be described. Fig. 11 is a perspective view showing the configuration of the main parts of a fixture of an illumination device according to this embodiment. Fig. 11 shows the configuration of fixture 40 as viewed from below. Note that secondary wire 27 and wire holder 30 in this embodiment are components of lighting fixture 20, not component of fixture 40, but are shown in Fig. 11 to clearly show their positional relationship. Fig. 12 is a block diagram of an illumination device according to this embodiment.

[0087] In this embodiment, two or more lighting devices 10 are installed adjacent to each other in the longitudinal direction. In this case, a power line 104 is routed from one lighting device 10 to another adjacent lighting device 10 through an opening 42a formed in an end plate 42 located at the longitudinal end of the fixture 40. The power line 104 is part of the primary electric wire. A knockout portion 42b is formed in the end plate 42. Therefore, for example, before installation work, an operator can apply an impact to the knockout portion 42b, thereby removing the metal plate of the knockout portion 42b from the end plate 42. This makes it easy to provide the opening 42a in the end plate 42.

[0088] With this configuration, the power line 104 additionally connected to the terminal block 43 can be passed through the opening 42a as a passing power line 104 to the adjacent lighting device 10. The power line 104 serves as a path for supplying AC power to the adjacent lighting device 10.

[0089] The power supply wire 104 is disposed in the lighting fixture housing portion 41a of the fixture 40. The power supply wire 104 hangs down toward the support body 24 due to the action of its own weight, and there is a risk that the power supply wire 104 may come close to or come into contact with the secondary wire 27 of the lighting fixture 20.

[0090] For this reason, a power line fixing device 46 is provided inside the lamp housing portion 41a for the purpose of fixing the position of the power line 104 and restricting movement of the power line 104. The power line fixing device 46 is, for example, a clip. Fixing the power line 104 with the power line fixing device 46 makes it possible to prevent the power line 104 from coming close to or coming into contact with the secondary wire 27 of the lamp 20.

[0091] In a cross section perpendicular to the longitudinal direction of the lighting device 10, the power line fixture 46 is desirably arranged so that the power line 104 is fixed at a position as far as possible from the secondary wire 27. For example, in a cross section perpendicular to the longitudinal direction of the lighting device 10, if the power line fixture 46 is provided along one side wall 41a2 of the lamp housing 41a, the secondary wire 27 is desirably arranged in an area on the side corresponding to the other side wall 41a3 of the lamp housing 41a.

[0092] This configuration prevents the handover power line 104 and the secondary wire 27 from coming close to or contacting each other, thereby suppressing an increase in EMC noise. In addition, the power line fixing device 46 restricts the movement of the power line 104, which has the effect of preventing the primary wire from being pinched between the lighting fixture 20 and the fixture 40 when the lighting fixture 20 is attached to the fixture 40.

[0093] The power line fixture 46 may be disposed on any of the main surface 41a1 and each of the side wall portions 41a2, 41a3 of the lamp housing 41a. The power line fixture 46 may be formed by cutting and raising the metal plate that forms the lamp housing 41a, or may be configured as a component separate from the fixture 40 that is attached to the lamp housing 41a. In this case, the power line fixture 46 is attached to the fixture 40 using an adhesive or other adhesive member, a fixing member such as a screw, a snap-fit structure, or the like.

[0094] When the power supply unit is installed on the fixture 40 side, such as in the lamp housing 41a, a power line fastener 46 may be used to fix the position of the secondary wires between the power supply unit and the light source unit 21 and restrict movement of the secondary wires. The secondary wires connect the power supply unit and the light source unit 21 via one longitudinal end of the support 24. If the distance between the power supply unit and the end of the support 24 is long, the secondary wires in the lamp housing 41a may droop toward the support 24 due to their own weight. Fixing the position of the secondary wires with the power line fastener 46 prevents the secondary wires from being pinched between the lamp 20 and the fixture 40 when the lamp 20 is attached to the fixture 40.

[0095] Fig. 13 is a flowchart showing the flow of a wiring method for a lighting device according to this embodiment. This wiring method is used in the installation work of lighting device 10, which includes the step of attaching lighting fixture 20 to fixture 40. First, in step S11 of Fig. 13, knockout portion 42b on the end of fixture 40 is opened.

[0096] Next, in step S12, the power line 104, which is a primary electric wire, is pulled into the interior of the fixture 40 from the adjacently arranged lighting device 10 via the opened knockout portion 42b.

[0097] Next, in step S13, the power line 104 is placed between one side wall of the fixture 40 and the power line fixture 46 (primary side electric wire holder) provided on the fixture 40.

[0098] Next, in step S14, the lighting fixture 20 is attached to the fixture 40 so that the secondary wire 27 is arranged on the other side wall portion of the fixture 40.

[0099] Through the above steps, the power supply line 104 and the secondary wire 27 are wired to the lighting device 10.

[0100] (Variation 2-1) Fig. 14 is a bottom view showing the configuration of a fixture of a lighting device according to Modification 2-1 of the present embodiment. Note that secondary wire 27 in the present embodiment is a component of lighting fixture 20, not of fixture 40, but is shown in Fig. 14 to clarify the positional relationship. Also, power supply unit 26 may be provided in fixture 40 or lighting fixture 20.

[0101] As shown in Fig. 14, this modified example differs from the configuration shown in Fig. 11 in the location of the power line fixture 46 in the lamp housing 41a. The power line fixture 46 is provided only on one side wall of the lamp housing 41a, closer to one end than the center in the longitudinal direction of the fixture 40. Specifically, three power line fixtures 46 are provided on the side wall 41a3 or on the main surface 41a1 near the side wall 41a3, closer to the left end than the center in the longitudinal direction of the fixture 40.

[0102] On the other hand, power line fixtures 46 are provided only on the other side wall of the lighting fixture housing 41a on the other end side of the center in the longitudinal direction of the fixture 40. Specifically, three power line fixtures 46 are provided on the side wall 41a2 or on the main surface 41a1 closer to the side wall 41a2 on the right end side of the center in the longitudinal direction of the fixture 40. In other words, the multiple power line fixtures 46 are arranged point-symmetrically with respect to the center of the main surface 41a1.

[0103] Two sets (two systems) of secondary electric wires 27 are provided on the other surface 24b of the support body 24. One set of secondary electric wires 27 is connected to the light source board 23 from the center of the support body 24 via one end of the support body 24 in the longitudinal direction. The secondary electric wires 27 are arranged along one end of the support body 24 in the lateral direction, from the center of the support body 24 to the one end of the support body 24 in the longitudinal direction. The other set of secondary electric wires 27 is connected to the light source board 23 from the center of the support body 24 via the other end of the support body 24 in the longitudinal direction. The secondary electric wires 27 are arranged along the other end of the support body 24 in the lateral direction, from the center of the support body 24 to the other end of the support body 24 in the longitudinal direction.

[0104] The arrangement of the power line fixture 46 in this modified example is based on this assumption. It is desirable that the power line 104 for passing to an adjacent lighting device 10 avoids proximity to or contact with the secondary electric wires 27. In other words, it is desirable that the power line 104 be arranged in parallel with the secondary electric wires 27 so as not to overlap them in the plan view shown in Fig. 14. For this reason, the power line fixture 46 in this modified example is arranged in a position so as not to overlap the secondary electric wires 27 in the plan view.

[0105] (Variation 2-2) This modified example differs from the configuration shown in Fig. 11 in the location of the power line fixture 46 in the lamp housing 41a. In the modified example 2-1, the power line fixture 46 is provided only on one side wall of the lamp housing 41a, closer to one end than the center in the longitudinal direction of the fixture 40. In the modified example 1, the power line fixture 46 is provided only on the other side wall of the lamp housing 41a, closer to the other end than the center in the longitudinal direction of the fixture 40. In contrast, in this modified example, one or more power line fixtures 46 are provided on both side wall sides of the lamp housing 41a, both on the one end side and the other end side than the center in the longitudinal direction of the fixture 40.

[0106] This modification increases the options for the position of the handover power wire 104. That is, the power wire 104 can be placed on either side of the side wall of the lamp housing 41a depending on the placement of the secondary wire 27 in the lamp 20. Therefore, this modification improves ease of installation and flexibility of installation.

[0107] As described above, the lighting device 10 according to this embodiment includes the lighting fixture 20, the fixture 40, and the power line 104. Here, the power line 104 is an example of a primary electric wire. The lighting fixture 20 includes the light source unit 21, the elongated support body 24 on one surface 24a of which the light source unit 21 is arranged, the power supply unit 26 that generates secondary electric power to be supplied to the light source unit 21, and the secondary electric wire 27 that is a path for supplying the secondary electric power from the power supply unit 26 to the light source unit 21. The fixture 40 is installed on a mounting portion. The fixture 40 has a lighting fixture housing portion 41a in which the lighting fixture 20 is mounted. The power line 104 is a path for supplying primary electric power to another lighting device that is arranged adjacently.

[0108] The other surface 24b of the support body 24 faces the lamp housing portion 41a. The secondary wire 27 is arranged on the other surface 24b side along the longitudinal direction of the support body 24. The power supply wire 104 is arranged in the lamp housing portion 41a along the longitudinal direction of the support body 24. In a cross section perpendicular to the longitudinal direction of the support body 24, the secondary wire 27 is arranged closer to one end of the support body 24 in the lateral direction than the center of the support body 24 in the lateral direction. In the above cross section, the power supply wire 104 is arranged closer to the other end of the support body 24 in the lateral direction than the center of the support body 24 in the lateral direction.

[0109] According to this configuration, the delivery power line 104 and the secondary electric wire 27 are arranged with a gap between them, which makes it possible to suppress EMC noise caused by interference between the power line 104 and the secondary electric wire 27. Therefore, it is possible to improve the electromagnetic compatibility of the lighting device 10.

[0110] In the lighting device 10 according to the present embodiment, the power line 104 is fixed to the fixture 40 using a power line fixture 46 attached to the lamp housing 41a. This configuration can prevent the power line 104 from shifting in position, thereby ensuring the spacing between the lamp-side electric wire 29 and the secondary-side electric wire 27.

[0111] In the lighting device 10 according to the present embodiment, the power line fixing device 46 may be disposed at either one of the two ends of the lamp housing 41a in the short direction of the fixture 40. With this configuration, the number of power line fixing devices 46 provided in the lamp housing 41a can be reduced, thereby reducing manufacturing costs.

[0112] In the lighting device 10 according to the present embodiment, the power line fixing device 46 may be disposed at either end of the lamp housing portion 41a in the short direction of the fixture 40. This configuration increases the options for the placement position of the power line 104.

[0113] In lighting device 10 according to the present embodiment, power line 104 is arranged between lamp housing 41a and the lamp housing of the other lighting device through opening 42a formed at an end in the longitudinal direction of fixture 40. With this configuration, primary power can be supplied to the other lighting device arranged adjacently.

[0114] In the lighting device 10 according to the present embodiment, the secondary wire 27 is held by the support body 24 using a wire holding portion 30b attached to the other surface 24b. This configuration can prevent the secondary wire 27 from shifting in position, thereby ensuring the distance between the lamp-side wire 29 and the secondary wire 27.

[0115] In the lighting device 10 according to the present embodiment, the electric wire holding portion 30b may be disposed at either one end or the other end in the short direction of the support body 24. According to this configuration, the number of electric wire holding portions 30b provided on the support body 24 can be reduced, thereby reducing manufacturing costs.

[0116] In the lighting device 10 according to this embodiment, the wire holding portions 30a and 30b may be disposed at either one end or the other end in the short direction of the support body 24. This configuration increases the options for the arrangement position of the secondary wires 27.

[0117] In the wiring method for the lighting device according to this embodiment, the secondary wires 27 are arranged along the longitudinal direction of the support body 24 on the other surface 24b side of the support body 24, closer to one end in the lateral direction of the support body 24 than the center in the lateral direction of the support body 24. Then, in the lamp housing 41a, the power line 104 is arranged along the longitudinal direction of the support body 24, closer to the other end in the lateral direction of the support body 24 than the center in the lateral direction of the support body 24.

[0118] According to this configuration, the power line 104 and the secondary wire 27 are arranged with a gap between them, which makes it possible to suppress EMC noise caused by interference between the power line 104 and the secondary wire 27. Therefore, it is possible to improve the electromagnetic compatibility of the lighting device 10.

[0119] Various aspects of the present disclosure are described below.

[0120] (Appendix 1) a light source unit; a long support body on one side of which the light source unit is arranged; a primary wire that is a path for supplying primary power to a power supply unit that generates secondary power to be supplied to the light source unit; a secondary electric wire that is a path for supplying the secondary electric power from the power supply unit to the light source unit; Equipped with the primary electric wire and the secondary electric wire are each arranged on the other surface side of the support body along the longitudinal direction of the support body, In a cross section perpendicular to a longitudinal direction of the support body, the secondary electric wire is disposed closer to one end portion in the lateral direction of the support body than to a central portion in the lateral direction of the support body, In the cross section, the primary wire is disposed closer to the other end of the support body in the short direction than the central portion. (Appendix 2) 2. The lighting fixture according to claim 1, wherein the primary wire is fixed to the support using a wire fixing device attached to the other surface. (Appendix 3) The lighting fixture according to claim 1 or 2, wherein the secondary wire is held by the support using a wire holder attached to the other surface. (Appendix 4) the wire holder includes a wire holding portion for holding the primary wire or the secondary wire, 4. The lighting fixture according to claim 3, wherein the wire holding portion is disposed at either one of the one end and the other end of the support body. (Appendix 5) the wire holder includes a wire holding portion for holding the primary wire or the secondary wire, 4. The lighting fixture according to claim 3, wherein the electric wire holding portion is disposed at both the one end and the other end of the support body. (Appendix 6) A lamp according to any one of appendices 1 to 5; a fixture that is installed on a mounting portion and to which the lighting fixture is attached; A lighting device comprising: (Appendix 7) a lighting fixture including a light source unit, a long support body having the light source unit disposed on one side thereof, a power supply unit that generates secondary power to be supplied to the light source unit, and a secondary wire that is a path for supplying the secondary power from the power supply unit to the light source unit; a fixture that is installed on the mounting portion and has a lamp holder in which the lamp is mounted; a primary wire that is a path for supplying primary power to another lighting device disposed adjacent to the primary wire; Equipped with The other surface of the support body faces the lamp housing portion, the secondary wire is disposed on the other surface side along the longitudinal direction of the support body, The primary wire is arranged in the lamp housing along the longitudinal direction of the support body, In a cross section perpendicular to a longitudinal direction of the support body, the secondary electric wire is disposed closer to one end portion in the lateral direction of the support body than to a central portion in the lateral direction of the support body, In the cross section, the primary wire is disposed closer to the other end of the support body in the short direction than the central portion. (Appendix 8) a light source unit; a long support body on one side of which the light source unit is arranged; a primary wire that is a path for supplying primary power to a power supply unit that generates secondary power to be supplied to the light source unit; a secondary electric wire that is a path for supplying the secondary electric power from the power supply unit to the light source unit; A wiring method for a lighting device having a lighting fixture comprising: the secondary electric wire is arranged along a longitudinal direction of the support body on the other surface side of the support body, closer to one end portion in the lateral direction of the support body than to a center portion in the lateral direction of the support body; a wiring method for a lighting device, the primary side electric wire being arranged on the other surface side, closer to the other end in the short direction of the support than the central portion, along the longitudinal direction of the support; (Appendix 9) a lighting fixture including a light source unit, a long support body having the light source unit disposed on one side thereof, a power supply unit that generates secondary power to be supplied to the light source unit, and a secondary wire that is a path for supplying the secondary power from the power supply unit to the light source unit; a fixture that is installed on the mounting portion and has a lamp holder in which the lamp is mounted; a primary wire that is a path for supplying primary power to another lighting device disposed adjacent to the primary wire; A wiring method for a lighting device comprising: the secondary electric wire is arranged along a longitudinal direction of the support body on the other surface side of the support body, closer to one end portion in the lateral direction of the support body than to a center portion in the lateral direction of the support body; A wiring method for a lighting device, in which the primary wire is arranged in the lighting fixture housing portion, closer to the other end portion in the short direction of the support body than the central portion, along the longitudinal direction of the support body. [Explanation of symbols]

[0121] 10 lighting device, 20 lighting fixture, 21 light source section, 22 light-emitting element, 23 light source board, 24 support, 24a one surface, 24b other surface, 24c1, 24c2 side wall section, 25 cover, 26 power supply section, 27 secondary side wire, 28 wire fixing device, 29 lighting fixture side wire, 29a lighting fixture side connector, 30 wire holder, 30a, 30b wire holding section, 30c connection section, 31 end wire holder, 35 connecting metal fitting, 40 fixture, 41 main body section, 41a lighting fixture housing section, 41a1 main surface section, 41a2, 41a3 side wall section, 41b through hole, 41c reflecting section, 42 end plate section, 42a opening section, 42b knockout section, 43 terminal block, 44 fixture side wire, 44a Appliance side connector, 45 connecting spring, 46 power line fixing device, 101 power line, 102 hanging bolt, 103 commercial AC power supply, 104 power line.

Claims

1. A light source unit; a long support body on one side of which the light source unit is arranged; a primary wire that is a path for supplying primary power to a power supply unit that generates secondary power to be supplied to the light source unit; a secondary electric wire that is a path for supplying the secondary electric power from the power supply unit to the light source unit; Equipped with the primary electric wire and the secondary electric wire are each arranged on the other surface side of the support body along the longitudinal direction of the support body, In a cross section perpendicular to a longitudinal direction of the support body, the secondary electric wire is disposed closer to one end portion in the lateral direction of the support body than to a central portion in the lateral direction of the support body, In the cross section, the primary wire is disposed closer to the other end of the support body in the short direction than the central portion.

2. The lamp according to claim 1 , wherein the primary wire is fixed to the support body using a wire fixing tool attached to the other surface.

3. The lamp according to claim 1 , wherein the secondary wire is held by the support body using a wire holder attached to the other surface.

4. the wire holder includes a wire holding portion for holding the primary wire or the secondary wire, The lamp according to claim 3 , wherein the electric wire holding portion is disposed at either the one end or the other end of the support body.

5. the wire holder includes a wire holding portion for holding the primary wire or the secondary wire, The lamp according to claim 3 , wherein the electric wire holding portion is disposed at both the one end and the other end of the support body.

6. A lamp according to any one of claims 1 to 5; a fixture that is installed on a mounting portion and to which the lighting fixture is attached; A lighting device comprising:

7. a lighting fixture including a light source unit, a long support body having the light source unit disposed on one side thereof, a power supply unit that generates secondary power to be supplied to the light source unit, and a secondary wire that is a path for supplying the secondary power from the power supply unit to the light source unit; a fixture that is installed on the mounting portion and has a lamp holder in which the lamp is mounted; a primary wire that is a path for supplying primary power to another lighting device disposed adjacent to the primary wire; Equipped with The other surface of the support body faces the lamp housing portion, the secondary wire is disposed on the other surface side along the longitudinal direction of the support body, The primary wire is arranged in the lamp housing along the longitudinal direction of the support body, In a cross section perpendicular to a longitudinal direction of the support body, the secondary electric wire is disposed closer to one end portion in the lateral direction of the support body than to a central portion in the lateral direction of the support body, In the cross section, the primary wire is disposed closer to the other end of the support body in the short direction than the central portion.

8. A light source unit; a long support body on one side of which the light source unit is arranged; a primary wire that is a path for supplying primary power to a power supply unit that generates secondary power to be supplied to the light source unit; a secondary electric wire that is a path for supplying the secondary electric power from the power supply unit to the light source unit; A wiring method for a lighting device having a lighting fixture comprising: the secondary electric wire is arranged along a longitudinal direction of the support body on the other surface side of the support body, closer to one end portion in the lateral direction of the support body than a center portion in the lateral direction of the support body; A wiring method for a lighting device, comprising: arranging the primary wire on the other surface side, closer to the other end in the short direction of the support than the central portion, along the longitudinal direction of the support.

9. a lighting fixture including a light source unit, a long support body having the light source unit disposed on one side thereof, a power supply unit that generates secondary power to be supplied to the light source unit, and a secondary wire that is a path for supplying the secondary power from the power supply unit to the light source unit; a fixture that is installed on the mounting portion and has a lamp holder in which the lamp is mounted; a primary wire that is a path for supplying primary power to another lighting device disposed adjacent to the primary wire; A wiring method for a lighting device comprising: the secondary electric wire is arranged along a longitudinal direction of the support body on the other surface side of the support body, closer to one end portion in the lateral direction of the support body than a center portion in the lateral direction of the support body; A wiring method for a lighting device, in which the primary wire is arranged in the lighting fixture housing portion along the longitudinal direction of the support body, closer to the other end portion in the lateral direction of the support body than the central portion.

Images