Lighting device and method

Abstract

To provide a lighting device which enables reduction of a workload during attachment.SOLUTION: A lighting device 100 includes: a light source; a power supply circuit which generates electric power to be supplied to the light source; a terminal block 15 to which an electric power line at the outside may be connected and which is electrically connected to the input side of the power supply circuit; a first connector 16 electrically connected to the input side of the power supply circuit; and a second connector 17 which is electrically connected to the input side of the power supply circuit and makes a pair with the first connector 16. The light source is electrically connected to the output side of the power supply circuit.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a lighting device and method. [Background technology]

[0002] Patent Document 1 describes a lighting fixture that can be connected to another lighting fixture. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-176104 A Summary of the Invention [Problem to be solved by the invention]

[0004] In general, with regard to lighting fixtures, it is required that the workload of a worker when attaching the fixture to a mounting portion (typically a ceiling) be small.

[0005] An object of the present invention is to provide a lighting fixture that can reduce the workload involved in installation. [Means for solving the problem]

[0006] The lighting fixture disclosed in the present application includes a light source, a power supply circuit, a terminal block, a first connector, and a second connector. The power supply circuit generates power to be supplied to the light source. The terminal block is capable of connecting an external power wire and is electrically connected to an input side of the power supply circuit. The first connector is electrically connected to the input side of the power supply circuit. The second connector is electrically connected to the input side of the power supply circuit and pairs with the first connector. The light source is further electrically connected to an output side of the power supply circuit.

[0007] The first connector is preferably located farther from the power supply circuit than the terminal block.

[0008] The first connector is preferably electrically connected to the input side of the power supply circuit through a terminal block.

[0009] The method disclosed in the present application is a method for connecting a plurality of lighting fixtures. Each of the plurality of lighting fixtures includes a light source, a power supply circuit, a terminal block, a first connector, and a second connector. The power supply circuit generates power to be supplied to the light source. The terminal block is capable of connecting an external power wire and is electrically connected to an input side of the power supply circuit. The first connector is electrically connected to the input side of the power supply circuit. The second connector is electrically connected to the input side of the power supply circuit and pairs with the first connector. Each of the light sources is electrically connected to an output side of the power supply circuit. The method includes the steps of connecting a power wire to a terminal block included in one of the plurality of lighting fixtures, and connecting the second connector included in one of the plurality of lighting fixtures to the first connector included in the remaining plurality of lighting fixtures.

[0010] The first connector included in one of the plurality of lighting fixtures and each of the terminal blocks included in the remaining plurality of lighting fixtures are unused. Effect of the Invention

[0011] The lighting fixture and method according to the present invention can reduce the workload involved in installation. [Brief description of the drawings]

[0012] [Figure 1] 1 is a perspective view of a lighting device 100 according to an embodiment of the present invention. [Diagram 2] 1 is an exploded perspective view of a lighting device 100 as viewed from a first position. [Diagram 3] 2 is an exploded perspective view of the lighting device 100 as viewed from a second position. FIG. [Figure 4] 4 is a cross-sectional view of the lighting fixture 100 taken along line IV-IV shown in FIG. [Diagram 5] 2 is a block diagram of the lighting device 100 shown in FIG. 1. [Figure 6] 6 is a flowchart showing the steps of a method for connecting a plurality of lighting fixtures 100 shown in FIGS. 1 to 5. FIG. [Figure 7] FIG. 7 is a schematic diagram showing a wire connection step S101 shown in FIG. [Figure 8] FIG. 7 is a schematic diagram showing a connecting step S102 shown in FIG. [Figure 9] 7 is a diagram showing an attachment step S105 and an attachment step S106 shown in FIG. 6. FIG. [Figure 10] FIG. 11 is a perspective view showing a housing 11 of a lighting device 100 according to a modified example of the embodiment. [Figure 11] FIG. 11 is a perspective view showing a protective component 3 of a lighting device 100 according to a modified example. [Figure 12] 12 is a cross-sectional view showing a state in which the protection component 3 shown in FIG. 11 is attached to a through-hole 111C. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] [Embodiment] Hereinafter, a lighting device and a method according to an embodiment of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiment, and can be implemented in various aspects without departing from the gist of the present invention. Note that explanations of duplicated parts may be omitted as appropriate. In addition, the same reference symbols are used for the same or equivalent parts in the drawings, and explanations are omitted or simplified.

[0014] In the following, in order to facilitate understanding of the present invention, the description may be made with reference to the mutually orthogonal X, Y, and Z directions. For example, the X and Y directions are parallel to the horizontal direction, and the Z direction is parallel to the vertical direction. One Z direction is a vertically upward direction, and the other Z direction is a vertically downward direction. However, the X and Y directions may be parallel to a direction other than the horizontal direction, and the Z direction may be parallel to a direction other than the vertical direction.

[0015] In the following, the terms "X dimension", "Y dimension" and "Z dimension" refer to dimensions in the X direction, Y direction and Z direction, respectively. For convenience, the X dimension, Y dimension and Z dimension are not shown in each drawing.

[0016] [Configuration of lighting fixture 100] Fig. 1 is a perspective view of a lighting fixture 100 according to an embodiment of the present invention. Fig. 1 shows the lighting fixture 100 in an assembled state. In the following, unless otherwise specified, the term "lighting fixture 100" means "lighting fixture 100 in an assembled state."

[0017] 2 and 3 are exploded perspective views of the lighting fixture 100 as viewed from a first position and a second position. The first position and the second position are different from each other. Specifically, the first position is a position away from the lighting fixture 100 on one side in the Z direction, one side in the X direction, and one side in the Y direction. The second position is a position away from the lighting fixture 100 on the other side in the Z direction, one side in the X direction, and one side in the Y direction.

[0018] Fig. 4 is a cross-sectional view of the lighting device 100 taken along line IV-IV shown in Fig. 1. Fig. 5 is a block diagram of the lighting device 100 shown in Fig. 1.

[0019] 1 to 4, the lighting fixture 100 has a substantially rectangular parallelepiped shape. The X dimension, Y dimension, and Z dimension of the lighting fixture 100 are x01, y01, and z01. x01 is much larger than each of y01 and z01. z01 is larger than y01.

[0020] Illumination device 100 includes a main body device 1. Main body device 1 has a housing 11. The X dimension, Y dimension, and Z dimension of housing 11 are defined as x02, y02, and z02. x02 is approximately the same as x01, and is far larger than each of y02 and z02.

[0021] The housing 11 is made of a metal plate having high heat dissipation performance. A typical example of this type of metal is aluminum.

[0022] The housing 11 has a shape like an upside-down alphabet "U" when viewed from above in the X direction (see FIGS. 2 and 3).

[0023] The wall 111 has a substantially rectangular shape in a plan view from the Z direction (see FIGS. 1 and 2). The wall 111 is long in the X direction, thin in the Z direction, and has a plate shape extending in the X and Y directions.

[0024] The wall 112 extends from the entire area of ​​an end 111A of the wall 111 on one side in the Y direction to the other side in the Z direction. The wall 113 extends from the entire area of ​​an end 111B of the wall 111 on the other side in the Y direction to the other side in the Z direction. Each of the walls 112, 113 has a substantially rectangular shape in a plan view from the Y direction. Each of the walls 112, 113 is long in the X direction, thin in the Y direction, and has a plate shape extending in the X direction and the Z direction. It is preferable that the walls 112, 113 have a substantially symmetrical shape in the Y direction.

[0025] The wall 111 has a through hole 111C (see FIGS. 1 and 2). The through hole 111C is formed in a position of the wall 111 closer to an end 111D on one side in the X direction than to an end 111E on the other side in the X direction. The through hole 111C penetrates the wall 111 in the Z direction. The through hole 111C has a generally oval shape when viewed from the Z direction. The planar shape of the through hole 111C may be a shape other than an oval, such as a circle.

[0026] As shown in FIG. 3 and FIG. 4, the wall 113 has a protrusion 113B on an inner surface 113A of the wall 113. The inner surface 113A is a surface of the wall 113 facing one side in the Y direction. The protrusion 113B is formed at a position away from an end 113C on the other side of the Z direction of the inner surface 113A in one direction in the Z direction. The protrusion 113B is formed at a position closer to the end 113C than the end 113D on one side of the Z direction of the inner surface 113A, for example. The protrusion 113B may be formed at a position farther from the end 113C than the end 113D on one side of the Z direction of the inner surface 113A, for example. The protrusion 113B extends linearly in the X direction between both ends 113E and 113F in the X direction of the inner surface 113A. If the Y dimension and Z dimension of the protrusion 113B are y03 and z03, y03 and z03 are much smaller than the above-mentioned y02 and z02.

[0027] 4, the wall 112 has a protrusion 112B on an inner surface 112A of the wall 112. The protrusion 112B has a shape that is approximately symmetrical to the protrusion 113B in the Y direction.

[0028] 2 to 4, the main device 1 further includes a base 12, an LED module 13 (see FIG. 3), a power supply device 14, a terminal block 15, a first connector 16, and a second connector 17. That is, the lighting fixture 100 includes the LED module 13, the power supply device 14, the terminal block 15, the first connector 16, and the second connector 17.

[0029] The base 12 has a substantially rectangular shape in plan view from the Z direction. The base 12 is long in the X direction, expands in the X and Y directions, and is thin in the Z direction. In detail, the X dimension, Y dimension, and Z dimension of the base 12 are x04, y04, and z04. x04 is slightly smaller than the above-mentioned x02. y04 is slightly smaller than the above-mentioned y02. The base 12 is preferably made of the same metal material as the housing 11. This makes it possible to reduce the manufacturing costs of the lighting device 100.

[0030] The base 12 has a first surface 121 and a second surface 122. The first surface 121 and the second surface 122 each extend in both the X direction and the Y direction. The first surface 121 faces the other side in the Z direction. The second surface 122 faces one side in the Z direction. A plurality of LED modules 13 are attached to the first surface 121 (see FIGS. 3 and 4). The power supply device 14, the terminal block 15, the first connector 16, and the second connector 17 are attached to the second surface 122 (see FIGS. 2 and 4).

[0031] 3 and 4, each LED module 13 is an example of a "light source" of the present invention. Each LED module 13 emits illumination light. Each LED module 13 has a substrate 131 and a plurality of light-emitting elements 132. For convenience of illustration, in FIG. 3, only one light-emitting element per LED module 13 is given the reference symbol "132."

[0032] The substrate 131 is made of a dielectric material, is long in the X direction, expands in the X and Y directions, and is a plate-like shape that is thin in the Z direction. In detail, the X dimension, Y dimension, and Z dimension of the substrate 131 are x05, y05, and z05. x05 is smaller than the above-mentioned x04. y05 is slightly smaller than the above-mentioned y04.

[0033] A plurality of light emitting elements 132 are mounted in an array at intervals on a first surface of the substrate 131. An electronic circuit for causing the plurality of light emitting elements 132 to emit light is formed on the substrate 131 by printing, electronic components, etc.

[0034] Each LED module 13 is fixedly attached to the first surface 121 of the base 12 with the first surface of the substrate 131 facing the other side in the Z direction. The LED modules 13 are arranged along the X direction on the first surface 121 between both ends 121A, 121B in the X direction (see FIG. 3). The multiple LED modules 13 are electrically connected in series.

[0035] The LED modules 13 are electrically connected between a pair of output terminals T2 (see FIG. 5) of the power supply circuit 143. The pair of output terminals T2 is an example of the "output side of the power supply circuit" of the present invention.

[0036] As shown in FIGS. 2 to 5, the power supply device 14 includes a housing 141, a board 142, and a power supply circuit 143.

[0037] Housing 141 has a generally rectangular parallelepiped shape that is long in the X direction (see FIGS. 2 and 3). The X dimension, Y dimension, and Z dimension of housing 141 are x06, y06, and z06. x06 is much smaller than the above-mentioned x04. y06 is slightly smaller than the above-mentioned y04. z06 is smaller than the above-mentioned z02.

[0038] The housing 141 is fixed by screws or the like at a position on the second surface 122 of the base 12 closer to the end 12A on one side in the X direction of the base 12 than to the end 12B on the other side in the X direction of the base 12 (see FIG. 2).

[0039] 5, the substrate 142 is a circuit board. A power supply circuit 143 is mounted on the substrate 142. The power supply circuit 143 generates power supplied to the plurality of LED modules 13. In detail, the power supply circuit 143 has an input terminal pair T1, a rectifier circuit 1431, a smoothing circuit 1432, and a DC-DC converter 1433 in addition to the output terminal pair T2 described above.

[0040] An AC voltage is applied to the input terminal pair T1 through the terminal block 15 or the first connector 16. The rectifier circuit 1431 rectifies the AC voltage applied to the input terminal pair T1 to generate a pulsating voltage. The smoothing circuit 1432 includes a capacitor, and smoothes the output voltage (i.e., the pulsating voltage) of the rectifier circuit 1431 to generate a DC voltage. The DC-DC converter 1433 generates a DC voltage suitable for the LED module 13 from the output voltage of the smoothing circuit 1432. The DC voltage is output from the output terminal pair T2.

[0041] The terminal block 15 is a component for relaying in forming an electric path from the external power electric wire 5 to the lighting fixture 100. The power electric wire 5 is an electric wire used for power transmission. An example of this type of power electric wire 5 is a VVF cable (Vinyl Insulated Vinyl Sheathed Flat-type Cable). The power electric wire 5 extends from a mounting portion (e.g., a ceiling) of the lighting fixture 100. In detail, the power electric wire 5 has a live wire 51, a neutral wire 52, and a ground wire 53.

[0042] In detail, the terminal block 15 has a main body 151, an input terminal group 152, and an output terminal group 153. The input terminal group 152 and the output terminal group 153 are provided on the main body 151.

[0043] The input terminal group 152 includes at least two sets of an L terminal, an N terminal, and a G terminal. In the input terminal group 152, a live line 51, a neutral line 52, and a ground line 53 can be connected to the L terminal, the N terminal, and the G terminal, respectively. That is, the terminal block 15 can be connected to an external power cable 5.

[0044] Output terminal group 153 includes at least one pair of an L terminal and an N terminal. Each L terminal of input terminal group 152 is electrically connected to an L terminal of output terminal group 153 by wiring (not shown) in main body 151. Each N terminal of input terminal group 152 is electrically connected to an N terminal of output terminal group 153 by wiring (not shown) in main body 151. Each G terminal of input terminal group 152 is grounded to base 12 used as a ground for lighting fixture 100 through wiring (not shown) in main body 151.

[0045] In addition, in the output terminal group 153, the L terminal is electrically connected to one of the input terminal pair T1. In addition, in the output terminal group 153, the N terminal is electrically connected to the other of the input terminal pair T1. That is, the terminal block 15 is electrically connected to the input side of the power supply circuit 143 (specifically, the input terminal pair T1).

[0046] 2, the terminal block 15 is fixed by screws or the like to a position on the second surface 122 of the base 12 closer to the end 12A on one side in the X direction of the base 12 than the housing 141 of the power supply device 14. That is, the terminal block 15 is located closer to the end 12A than the power supply circuit 143. In detail, in the terminal block 15, the input terminal group 152 is located closer to the end 12A than the output terminal group 153. In other words, the output terminal group 153 is located closer to the power supply device 14 than the input terminal group 152. With this arrangement, when an operator connects the power electric wires 5 to the terminal block 15, the power supply device 14 does not get in the way of the connection work.

[0047] The first connector 16 has a main body 161, an input terminal group 162, and an output terminal group 163. The input terminal group 162 and the output terminal group 163 each include at least one pair of an L terminal and an N terminal. In the first connector 16, the L terminals are electrically connected to each other by wiring (not shown) in the main body 161. In the first connector 16, the N terminals are electrically connected to each other by wiring (not shown) in the main body 161.

[0048] In the output terminal group 163, the L terminal is electrically connected to one of the input terminal pair T1. In addition, in the output terminal group 163, the N terminal is electrically connected to the other of the input terminal pair T1. That is, the first connector 16 is electrically connected to the input side of the power supply circuit 143 (specifically, the input terminal pair T1). Therefore, according to the lighting fixture 100, it is possible to supply power to the input terminal pair T1 of the power supply circuit 143 from both the power supplied from another lighting fixture 100 and the power supplied through the external power electric wire 5. This reduces the workload when connecting multiple lighting fixtures 100 and attaching the mounting parts.

[0049] In the output terminal group 163, the L terminal and the N terminal do not have to be directly connected to the input terminal pair T1. Specifically, the L terminal and the N terminal only need to be electrically connected to positions that are equipotential with one and the other of the input terminal pair T1.

[0050] Specifically, in output terminal group 163, the L terminal and the N terminal are electrically connected to the other L terminal and N terminal in input terminal group 152 of terminal block 15 by power wires 6. That is, first connector 16 is electrically connected to the input side of power circuit 143 through terminal block 15. Therefore, the wiring does not become congested inside lighting device 100. Specifically, the length of power wires 6 is shorter than when first connector 16 is not connected to power circuit 143 through terminal block 15. Therefore, the wiring does not become congested inside lighting device 100.

[0051] The first connector 16 is located on the second surface 122 of the base 12 closer to the end 12A on one side in the X direction of the base 12 than the terminal block 15 (see FIG. 2). That is, the first connector 16 is located farther from the power supply circuit 143 than the terminal block 15. This arrangement of the first connector 16 makes it easy to connect the second connector 17 of one lighting fixture 100 to the first connector 16 of the other lighting fixture 100 when connecting two lighting fixtures 100 vertically side by side (see FIGS. 6 to 9). In detail, the power supply device 14 and the terminal block 15 do not get in the way of the connection work of connecting the first connector 16 and the second connector 17.

[0052] In first connector 16, input terminal group 162 is located closer to end 12A than output terminal group 163. Therefore, when two lighting fixtures 100 are connected vertically side by side (see FIGS. 6 to 9), second connector 17 can be easily connected to first connector 16.

[0053] Moreover, first connector 16 is connected to terminal block 15 via power wire 6. Unlike terminal block 15 and the like, first connector 16 and power wire 6 are not fixed to base 12 with screws or the like. Therefore, first connector 16 swings around terminal block 15 as a fulcrum. As a result, when two lighting fixtures 100 are connected vertically side by side (see Figs. 6 to 9), second connector 17 can be easily connected to first connector 16.

[0054] 5, the second connector 17 is paired with the first connector 16. That is, the second connector 17 is connectable to the first connector 16. In particular, one of the first connector 16 and the second connector 17 is a plug, and the other is a receptacle.

[0055] The second connector 17 has a main body 171, an input terminal group 172, and an output terminal group 173. The input terminal group 172 and the output terminal group 173 each include at least one pair of an L terminal and an N terminal. In the second connector 17, the L terminals are electrically connected to each other by wiring (not shown) in the main body 171. In the second connector 17, the N terminals are electrically connected to each other by wiring (not shown) in the main body 171.

[0056] In the input terminal group 172, the L terminal is electrically connected to one of the input terminal pair T1. In the input terminal group 172, the N terminal is electrically connected to the other of the input terminal pair T1. That is, the second connector 17 is electrically connected to the input side of the power supply circuit 143 (specifically, the input terminal pair T1). In the output terminal group 163, the L terminal and the N terminal may be electrically connected to positions that are equipotential with one and the other of the input terminal pair T1, similar to the first connector 16.

[0057] In the input terminal group 172, the L terminal and the N terminal are electrically connected to the input terminal pair T1 by the power wire 7. The power wire 7 is electrically connected to the input terminal pair T1 side of the power supply circuit 143 at an end on one side in the X direction of the power wire 7. The power wire 7 extends from the input terminal pair T1 side to the other side in the X direction inside the housing 11. The power wire 7 extends beyond the ends 111E and 112E to the other side in the X direction of the housing 11, and reaches the end 7A of the power wire 7 on the other side in the X direction (see FIG. 1). The power wire 7 is electrically connected to the input terminal group 172 (see FIG. 5) at the end 7A. Since the power wire 7 is long as described above, when an operator connects multiple lighting fixtures 100, the second connector 17 can be easily connected to the first connector 16.

[0058] Unlike terminal block 15 and the like, second connector 17 and power wire 7 are not fixed to base 12 with screws or the like. As a result, when two lighting fixtures 100 are connected vertically side by side (see Figs. 6 to 9), second connector 17 can be easily connected to first connector 16.

[0059] 1 to 3 again. The lighting fixture 100 further includes a cover 2. The X dimension, the Y dimension, and the Z dimension of the cover 2 are x06, y06, and z06 (not shown). x06 is approximately the same as x02 and is much larger than each of y06 and z06. y06 is approximately the same as y02.

[0060] The cover 2 is made of a light-transmitting resin or glass.

[0061] The cover 2 has a shape like the capital letter "U" in a plan view from the X direction.

[0062] The wall 21 has a substantially rectangular shape in plan view from the Z direction. The wall 21 is long in the X direction, thin in the Z direction, and plate-like in shape extending in the X and Y directions. The wall 22 extends in one direction in the Z direction from the entire area of ​​an end 21A of the wall 21 on one side in the Y direction. The wall 23 extends in the other direction in the Z direction from the entire area of ​​an end 21B of the wall 21 on the other side in the Y direction. Each of the walls 22, 23 has a substantially rectangular shape that is long in the X direction in plan view from the Y direction. Each of the walls 22, 23 is thin in the Y direction and plate-like in shape extending in the X and Z directions. It is preferable that the walls 22, 23 have a substantially symmetrical shape in the Y direction.

[0063] [How to connect the lighting fixtures 100] Next, a method for connecting a plurality of lighting fixtures 100 vertically will be described with reference to Figs. 6 to 9.

[0064] Fig. 6 is a flow diagram showing the steps of a method for connecting a plurality of lighting fixtures 100 shown in Fig. 1 to Fig. 5. As shown in Fig. 6, the method includes at least a wiring step S101 and a connection step S102.

[0065] Fig. 7 is a schematic diagram showing the wire connection step S101 shown in Fig. 6. As shown in Fig. 7, the wire connection step S101 is a step of connecting a power electric wire 5 to a terminal block 15 included in a lighting fixture 100A, which is one of the lighting fixtures 100.

[0066] Fig. 8 is a schematic diagram showing the connecting step S102 shown in Fig. 6. As shown in Fig. 8, the connecting step S102 is a step of connecting the second connector 17 of the lighting fixture 100A to the first connector 16 of the remaining lighting fixture 100B of the plurality of lighting fixtures 100.

[0067] In the method shown in FIG. 6, first connector 16 of lighting fixture 100A and terminal block 15 of lighting fixture 100B are each unused.

[0068] The method will be described in more detail below with reference to FIGS. 6 to 9. As shown in FIG. 6, the method further includes an attachment step S103 of the housing 11 included in the lighting device 100A. The attachment step S103 is performed by an operator before the wiring step S101. In the attachment step S103, as shown in FIG. 7, the housing 11 is attached to an attachment portion 71 such as a ceiling with a plurality of screws 72. An end cap 114 is attached to one end of the housing 11 in the X direction. A connecting member 115 is attached to the other end of the housing 11 in the X direction. The screws 72, the end cap 114, and the connecting member 115 are publicly known techniques, and therefore will not be described here. In the attachment step S103, the power electric wire 5 extending from the attachment portion 71 is further inserted into the through hole 111C (see FIG. 2) and introduced from the outside to the inside of the housing 11.

[0069] After the mounting step S103, the above-mentioned wiring step S101 is performed by the worker.

[0070] Following the wiring step S101, an operator performs an attachment step S104 of the base 12 of the lighting device 100A. In the attachment step S104, the base 12 to which the cover 2 is attached is attached to the housing 11 as shown in Fig. 7. As a result, the assembly of the lighting device 100A is completed. Note that, in order to attach the base 12 to the housing 11, a known attachment member 116 is used for the base 12. In this embodiment, three attachment members 116 are fixed to the base 12 with screws or the like at intervals in the X direction.

[0071] After the mounting step S104, a mounting step S105 of the housing 11 of the lighting fixture 100B is carried out. Fig. 9 is a diagram showing the mounting steps S105 and S106 shown in Fig. 6. As shown in Fig. 9, in the mounting step S105, one end in the X direction of the housing 11 of the lighting fixture 100B is mounted to a connecting member 115 (see Fig. 8) attached to the housing 11 of the lighting fixture 100A. The housing 11 of the lighting fixture 100B is mounted to a mounting portion 71 such as a ceiling with a plurality of screws 72 (see Fig. 8). An end cap 114 is attached to the other end in the X direction of the housing 11 of the lighting fixture 100B.

[0072] After the mounting step S105, the above-mentioned connecting step S102 is performed by the worker.

[0073] Following the connecting step S102, an installation step S106 of the base 12 of the lighting fixture 100B is performed by an operator. In the installation step S106, as shown in Fig. 9, the base 12 to which the cover 2 is attached is attached to the housing 11 of the lighting fixture 100B. As a result, the assembly of the lighting fixture 100B is completed.

[0074] [Variations] Fig. 10 is a perspective view showing housing 11 of lighting device 100 according to a modified embodiment. As shown in Fig. 10, through hole 111C has a rounded rectangular shape in plan view from the Z direction.

[0075] Fig. 11 is a perspective view showing a protective component 3 of a lighting device 100 according to a modified example. Fig. 12 is a cross-sectional view showing a state in which the protective component 3 shown in Fig. 11 is attached to a through-hole 111C.

[0076] 11 and 12, the lighting device 100 further includes a protective component 3. The protective component 3 is an integrally molded product made of resin. The protective component 3 has a main body 31 and engagement portions 32A and 32B.

[0077] The main body 31 has substantially the same shape as the through hole 111C in a plan view from the Z direction. The main body 31 is a plate-like shape that is thin in the Z direction. The main body 31 has a through hole 311. The through hole 311 penetrates the main body 31 in the Z direction. The through hole 311 is approximately circular in a plan view from the Z direction. The planar shape of the through hole 311 may be elliptical.

[0078] The engaging portion 32A is connected to an end 31A on one side in the Y direction of the main body 31. The engaging portion 32A extends from the end 31A in a specific direction. The specific direction is the other side of the Z direction and one side of the Y direction, and is diagonally downward to the right in Fig. 11. As shown in Fig. 12, the dimension of the engaging portion 32A in the specific direction is approximately the same as the distance from the end of the through hole 111C on one side in the Y direction to the protrusion 112B.

[0079] The engaging portion 32B is connected to an end 31B on the other side in the Y direction of the main body 31. The engaging portion 32B has a shape symmetrical to the engaging portion 32A in the Y direction.

[0080] Next, a method for attaching the protective component 3 will be described.

[0081] As shown in FIG. 12, the worker brings the protection component 3 closer to the through hole 111C from a position farther away in the other Z direction than the through hole 111C. At this time, the main body 31 is brought closer to the through hole 111C before the engagement parts 32A and 32B. After that, the worker fits the main body 31 into the through hole 111C. In this process, the tip of the engagement part 32A slides on the inner surface 112A in one direction in the Z direction, and then climbs over the protrusion 112B and is positioned on the inner surface 112A on one side in the Z direction than the protrusion 112B. Similarly, the engagement part 32B is positioned on the inner surface 113A on one side in the Z direction than the protrusion 113B. That is, the engagement parts 32A and 32B engage with the protrusions 112B and 113B. This prevents the protection component 3 from falling off the housing 11. Furthermore, the protection component 3 prevents the power electric wire 5 from contacting the edge of the metal through hole 111C. This protects the power cables 5.

[0082] The above configuration allows the protective component 3 to be easily attached to the housing 11. In detail, it is also possible to move the protective component along the inner surface of the wall 111 from one side in the X direction of the housing 11 and attach it to the through hole 111C of the housing 11. However, since the terminal block 15 and the first connector 16 are arranged in the lighting device 100, it is considered that the protective component may interfere with these. On the other hand, the protective component 3 as in the modified example is attached to the through hole 111C without interfering with the terminal block 15 and the first connector 16.

[0083] The embodiments of the present invention have been described above with reference to the drawings. The present invention is not limited to the above embodiments, and can be implemented in various aspects without departing from the spirit of the present invention. In addition, the components disclosed in the above embodiments can be modified as appropriate. For example, a certain component among all the components shown in one embodiment may be added to a component of another embodiment, or some components among all the components shown in one embodiment may be deleted from the embodiment.

[0084] The drawings are mainly schematic illustrations of each component to facilitate understanding of the invention, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, the configurations of each component shown in the above embodiment are merely examples and are not particularly limited, and it goes without saying that various modifications are possible within a range that does not substantially deviate from the effects of the present invention.

[0085] In the embodiment, the lighting fixture 100 includes the LED module 13 as an example of a light source. However, the light source is not limited to this, and the lighting fixture 100 may include a fluorescent lamp as a light source. [Industrial Applicability]

[0086] INDUSTRIAL APPLICABILITY The present invention provides a lighting device and a lighting method, and has industrial applicability. [Explanation of symbols]

[0087] 5: Power cables 13: LED module (light source) 14:Power supply 15:Terminal block 16: First connector 17: Second connector 100: Lighting equipment 143: Power supply circuit T1: Input terminal pair (input side) T2: Output terminal pair (output side)

Claims

1. A light source; a power supply circuit that generates power to be supplied to the light source; a terminal block capable of connecting an external power cable and electrically connected to an input side of the power supply circuit; a first connector electrically connected to an input side of the power supply circuit; a second connector electrically connected to the input side of the power supply circuit and paired with the first connector; Equipped with The light source is electrically connected to the output side of the power supply circuit.

2. The lighting fixture according to claim 1 , wherein the first connector is located farther from the power supply circuit than the terminal block is.

3. The lighting fixture according to claim 1 , wherein the first connector is electrically connected to an input side of the power supply circuit through the terminal block.

4. A method for connecting a plurality of lighting fixtures, comprising the steps of: Each of the plurality of lighting fixtures is A light source; a power supply circuit that generates power to be supplied to the light source; a terminal block capable of connecting an external power cable and electrically connected to an input side of the power supply circuit; a first connector electrically connected to an input side of the power supply circuit; a second connector electrically connected to the input side of the power supply circuit and paired with the first connector; Equipped with Each of the light sources is electrically connected to an output side of the power supply circuit; The method comprises: connecting the power wire to the terminal block of one of the plurality of lighting fixtures; connecting a second connector of one of the plurality of lighting fixtures to the first connectors of the remaining lighting fixtures; A method comprising:

5. The method of claim 4 , wherein the first connector of one of the plurality of lighting fixtures and each of the terminal blocks of the remaining plurality of lighting fixtures are unused.

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