JP2023096638A - Lighting device - Google Patents

Abstract

To provide a lighting device which can simplify a wiring structure.SOLUTION: A lighting device comprises a metallic equipment body 20, a power supply uni arranged at the equipment main body 20, a light source unit attachable and detachable to/from the equipment main body 20, an attachment mechanism 23, and a ground cable 38. The attachment mechanism 23 has a metallic body attachment part 24 electrically connected and attached to the equipment main body 20, and a light source attachment part attached to the light source unit, where the light source unit is detachably attached to the equipment main body 20 by the main body attachment part 24 and the light source attachment part. The ground cable 38 is electrically connected and attached to the body attachment part 24, and is electrically connected to the light source unit.SELECTED DRAWING: Figure 4

Description

Embodiments of the present invention relate to lighting devices.

2. Description of the Related Art Conventionally, there is a lighting device that includes a fixture body in which a power supply section is arranged, and a light source unit that can be attached to and detached from the fixture body. In order to prevent electric shock in the event of an electric leakage, this lighting device uses a ground wire that connects the fixture body and the light source unit to ensure continuity of the ground (functional ground) between the fixture body and the light source unit. is used. The ground wire is electrically connected to the device main body by being fixed with a nut to a bolt that attaches the power supply section to the device main body.

However, the wiring structure from the power source is complicated because the output line for supplying lighting power from the power source to the light source unit and the ground wire are wired inside the fixture body. If the wiring structure from the power supply becomes complicated in this way, if there is an installation structure for installing the main body of the fixture in the wiring direction from the power supply, it may interfere with the installation work or pinch the ground wire during installation. etc. may occur.

JP 2019-169455 A

A problem to be solved by the present invention is to provide a lighting device capable of simplifying a wiring structure from a power supply section.

A lighting device according to an embodiment includes a metal fixture body, a power supply section arranged in the fixture body, a light source unit detachable from the fixture body, an attachment mechanism, and a ground wire. The mounting mechanism has a metal main body mounting portion that is electrically connected to and mounted on the fixture body, and a light source mounting section that is mounted to the light source unit. Attach detachably to the The ground wire is electrically connected and attached to the main body attachment portion, and is electrically connected to the light source unit.

According to the lighting device of the embodiment, the wiring structure from the power supply section can be simplified.

1 is a perspective view of a lighting device showing a first embodiment; FIG. It is a perspective view of a lighting device same as the above. It is a bottom view of the main unit of the lighting device same as the above. It is a perspective view before connecting a ground wire to the main body attachment part of the lighting device same as the above. It is the perspective view which connected the ground wire to the main-body attachment part of the lighting device same as the above. It is a perspective view before connecting a ground wire to the main body mounting portion of the lighting device showing the second embodiment. It is the perspective view which connected the ground wire to the main-body attachment part of the lighting device same as the above.

A first embodiment will be described below with reference to FIGS. 1 to 5. FIG.

A lighting device 10 is shown in FIGS. The illumination device 10 shown in FIGS. 1 and 2 is an example of a direct-mounted illumination device installed on an installation surface such as a ceiling surface. The illumination device 10 is provided in a long shape, and is a base light in which a light-emitting region continues linearly along the longitudinal direction.

The lighting device 10 includes a body unit 11 and a light source unit (light source bar) 12 detachably attached to the body unit 11 .

As shown in FIGS. 1 and 3, the main unit 11 includes an elongated instrument body 20, a terminal block 21 and a power supply section 22 arranged in the central region of the instrument body 20 in the longitudinal direction, and an instrument holder. and a pair of main body attachment portions 24 of an attachment mechanism 23 arranged near both ends of the body 20 in the longitudinal direction.

The instrument main body 20 is made of metal and formed in an elongated shape. The instrument main body 20 has a long top plate portion 26 on the upper surface side, side plate portions 27 on both sides in the width direction that intersects the longitudinal direction, and end plate portions 28 on both ends in the longitudinal direction. , an opening 29 is formed on the lower surface side. The top plate portion 26 and the side plate portions 27 on both sides are integrally formed, and the end plate portions 28 are attached to both longitudinal ends of the top plate portion 26 and the side plate portions 27 on both sides.

The top plate portion 26 of the fixture body 20 is provided with a wiring hole 30 at substantially the center in the longitudinal direction for drawing in the power cable to be wired in the ceiling space into the fixture body. For the power cable, for example, a three-wire type cable in which a pair of power wires and one ground wire are put together can be used.

Mounting holes 31 for hanging bolts protruding from the ceiling surface and screws for mounting to the ceiling surface are provided in the top plate portion 26 of the apparatus main body 20 near both ends in the longitudinal direction. Mounting holes 32 are provided for. The mounting holes 31 and 32 are arranged at the center of the top plate portion 26 in the width direction. The mounting holes 31 for hanging bolts are arranged in pairs at different pitches in the longitudinal direction of the device body 20 . A plurality of mounting holes 32 for screwing are arranged in the longitudinal direction of the device body 20 in a round shape.

Also, the terminal block 21 is attached to a position near the wiring hole 30 . The terminal block 21 is arranged between the wiring hole 30 and the mounting holes 31 and 32 on the one end side of the device body 20 with respect to the wiring hole 30 . The terminal block 21 has a plurality of terminals into which a power cable drawn into the instrument body 20 from the wiring hole 30 is inserted and connected. The terminals include a pair of power terminals to which the pair of power wires of the power cable are connected and a ground terminal to which the ground wire of the power cable is connected.

A ground terminal of the terminal block 21 is electrically connected to the instrument body 20 . For example, when the terminal block 21 is attached to the device body 20 with screws, the screws are electrically connected to the ground terminal, and the ground terminal is electrically connected to the device body 20 through the screws.

The power supply unit 22 is attached between the wiring hole 30 and the mounting holes 31 and 32 on the other end side of the instrument body 20 with respect to the wiring hole 30 on the side opposite to the terminal block 21 . The power supply unit 22 is provided in an elongated shape and arranged along the longitudinal direction of the instrument main body 20 .

The power supply unit 22 is, for example, an AD-DC converter, converts AC power, which is external power supplied through a power cable, into DC power, which is predetermined lighting power, and supplies the DC power to the light source unit 12 .

An input section 34, which is a primary input section for inputting external power, is provided at one end of the power supply section 22, and an output section 35, which is a secondary output section for outputting lighting power, is provided at the other end. The input section 34 and the output section 35 can be configured by connectors, for example. The input section 34 of the power supply section 22 is electrically connected to internal wiring that is wired between the terminal block 21 and the input section 34 . One end side of a plurality of output lines 37 of a main body wiring unit 36 for connecting to the light source unit 12 is electrically connected to the output portion 35 of the power supply portion 22 .

The body wiring unit 36 has a plurality of output lines 37 , one ground line 38 and a connector 39 . One end side of the plurality of output lines 37 is electrically and mechanically connected to the output section 35 of the power supply section 22, and one end side of the ground line 38 is the body attachment section on the other end side facing the output section 35 of the power supply section 22. 24 , and the other ends of the plurality of output lines 37 and ground lines 38 are electrically and mechanically connected to a connector 39 . The length of the ground wire 38 is set shorter than the length of the output line 37 by a length corresponding to the distance between the power supply section 22 and the main body mounting section 24 . A ground wire terminal, for example, a Faston terminal 40 is attached to one end of the ground wire 38 . The Faston terminal 40 is crimped and fixed to the ground wire 38 at its proximal end, and is formed with an insertion groove 41 for inserting a tab opening toward the distal end side by bending both edges on the distal end side.

The output line 37 and the ground wire 38 of the main body wiring unit 36 are wired from the power supply section 22 and the main body attachment section 24 toward the other end side of the instrument main body 20, and to one side of the instrument main body 20 in the width direction. It is wired along the side plate portion 27 on one side. The ground wire 38 extends from the body attachment portion 24 toward the opposite side of the power supply portion 22 . Furthermore, the output line 37 and the ground wire 38 of the main body wiring unit 36 are held in the device body 20 by a holder such as a wire retainer or a band at the intermediate portion, and the other end side is pulled out from the opening 29 of the device body 20. A connector 39 can be connected to the light source unit 12 .

In some cases, a plurality of lighting devices 10 are arranged continuously in the longitudinal direction, and a power cable from the ceiling surface is connected to a terminal block 21 from one lighting device 20 to an adjacent lighting device 10 to supply power through wiring. be. In this case, it is preferable that the feed wiring be wired on the other side in the width direction opposite to the one side in the width direction inside the device main body 20 to which the main wiring unit 36 is wired.

Also, the mounting mechanism 23 detachably mounts the light source unit 12 to the fixture body 20 . The attachment mechanism 23 includes a pair of body attachment portions 24 attached to the instrument body 20 . The pair of main body attachment portions 24 are attached near both longitudinal ends of the top plate portion 26 of the instrument body 20, at least closer to the ends of the instrument body 20 than the attachment holes 31 for hanging bolts. The body attachment portion 24 on the other end side facing the output portion 35 of the power supply portion 22 is arranged at a position where at least the attachment hole 31 for the hanging bolt is arranged between the output portion 35 of the power supply portion 22 and the body attachment portion 24 . .

The body mounting portion 24 has a metal spring bracket 43 . The spring bracket 43 includes a mounting plate portion 44 attached along the inner surface of the top plate portion 26 of the instrument main body 20 and a support plate portion 45 disposed substantially perpendicular to the top plate portion 26 from the mounting plate portion 44. and has. The widthwise dimension of the attachment plate portion 44 corresponding to the widthwise direction of the instrument main body 20 is wider than the support plate portion 45 , and both sides of the attachment plate portion 44 in the width direction protrude beyond the support plate portion 45 . An engagement opening 46 is formed in the support plate portion 45 , and a hook portion 47 protrudes from the center of the lower edge of the engagement opening 46 .

The mounting plate portion 44 of the spring bracket 43 is fixed and electrically connected to the instrument body 20 by a plurality of screws 48 such as tapping screws screwed through the top plate portion 26 of the instrument body 20. there is

A mounting plate portion 44 of the spring bracket 43 is provided with a tab terminal portion 49 as a ground wire connection portion to which the ground wire 38 is connected. The tab terminal portion 49 is on one side of the mounting plate portion 44 in the width direction, and is one side of the support plate portion 45 in the width direction. is provided. The tab terminal portion 49 is formed in a substantially L shape that rises from the mounting plate portion 44 and protrudes toward the other end side of the device body 20 . A gap is formed between the tab terminal portion 49 and the top plate portion 26 of the instrument body 20 . The Faston terminal 40 of the ground wire 38 is connected to the tab terminal portion 49 . The insertion groove 41 of the Faston terminal 40 is relatively inserted into the tab terminal portion 49, and in a state in which the Faston terminal 40 elastically holds the tab terminal portion 49, the tab terminal portion 49 and the Faston terminal 40 are electrically connected. Connected. A ground wire 38 connected to the tab terminal portion 49 is wired along the inner surface of the top plate portion 26 so as to extend from the spring bracket 43 toward the other end side of the device main body 20 .

Next, as shown in FIGS. 1 and 2, the light source unit 12 is elongated and formed to have substantially the same length as the fixture body 20 . The light source unit 12 includes an elongated chassis 60, a light source 61 attached to the bottom side of the chassis 60, a cover 62 attached to the chassis 60 covering the light source 61, and a longitudinal direction on the top side of the chassis 60. and a pair of light source mounting portions 63 of the mounting mechanism 23 mounted near both ends.

The chassis 60 is made of metal and has an elongated shape. The light source 61 is composed of a light source module having a long substrate and a plurality of light emitting elements mounted along the longitudinal direction of this substrate. An LED, an organic EL, or the like can be used as the light emitting element. The cover 62 has translucency and light diffusion properties, and allows light from the light source 61 to pass therethrough.

A light source wiring unit 65 electrically connected to the main body wiring unit 36 of the main body unit 11 is electrically connected to the light source unit 12 . The light source wiring unit 65 includes multiple input lines, one ground line, and a connector 66 . One end side of the plurality of input lines is electrically connected to the light source module, the ground line is electrically connected to the chassis 60 , and the other end sides of the plurality of input lines and the ground line are connected to the connector 66 . The light source wiring unit 65 is pulled out from the other end side of the upper surface of the chassis 60 corresponding to the main body wiring unit 36 being pulled out from the other end side of the fixture main body 20, and the connector 66 is connected to the main body wiring unit 36 connector. 39 is detachably connected. By connecting the connector 39 of the main body wiring unit 36 and the connector 66 of the light source wiring unit 65, each output line 37 and ground line 38 of the main body wiring unit 36 and each input line and ground line of the light source wiring unit 65 are electrically connected. connected

Moreover, the attachment mechanism 23 attaches the light source unit 12 to the instrument main body 20 so that attachment or detachment is possible. The attachment mechanism 23 includes a pair of light source attachment portions 63 attached to the light source unit 12 . The pair of light source attachment portions 63 are detachably attached to the pair of body attachment portions 24 attached to the fixture body 20 .

The pair of light source mounting portions 63 includes spring mounting brackets 68 attached to the chassis 60 and mounting springs 69 attached to the spring mounting brackets 68 .

The mounting spring 69 is formed by bending a single elastic wire. The mounting spring 69 includes a pair of coil portions 70 wound in a coil shape, an arm portion 71 extending from one end side of the coil portions 70 and bent in a substantially U shape, and each coil portion 70. and a pair of ends each extending from one end and attached to a spring fitting 68 . The mounting spring 69 is arranged so that the arm portion 71 is directed toward the opposite end side with respect to the center of the chassis 60, and a downward spring force is applied so that the arm portion 71 approaches the upper surface of the chassis 60. ing.

The mounting spring 69 is mounted in a state in which the distal end side of the arm portion 71 which is obliquely raised from the chassis 60 against the spring force is inserted into the engagement opening 46 of the spring receiving metal fitting 43 from the longitudinal center side of the instrument main body 20 . , the light source unit 12 is pulled up and attached to the instrument main body 20 while the arm portion 71 moves to the longitudinal end side of the instrument main body 20 with respect to the spring receiving metal fitting 43 by the spring force.

In order to install the lighting device 10, the power cable from the ceiling surface is drawn into the fixture body 20 through the wiring hole 30, and the fixture body 20 is attached to the ceiling face using the mounting hole 31 or the mounting hole 32.

When attaching the fixture body 20 to a pair of hanger bolts protruding from the ceiling surface, the pair of hanger bolts are passed through a pair of mounting holes 31 having a pitch corresponding to the pitch of the pair of hanger bolts. A nut is screwed to the suspension bolt, and the instrument body 20 is tightened up with the nut and attached to the ceiling surface. When attaching the device body 20 to the ceiling surface with screws, the screws are screwed into the ceiling surface through two mounting holes 32 at both ends of the device body 20, and the device body 20 is tightened with the screws to be attached to the ceiling surface. .

At this time, between the output section 35 of the power supply section 22 and the spring bracket 43 on the other end side facing the output section 35, only the output line 37 of the main body wiring unit 36 is wired, and the ground line 38 is wired. The wiring structure is simplified by not having

In a general structure in which the ground wire 38 is attached to the bolt that attaches the power supply unit 22 to the device main body 20, the ground wire 38 is arranged at the center of the device main body 20 in the width direction. Since the ground wire 38 extends in the direction of the mounting holes 31 and 32, the ground wire 38 interferes with the operation of the nut on the suspension bolt passed through the mounting hole 31 or the operation of the screw through the mounting hole 32. may be entrapped.

On the other hand, in the configuration of the present embodiment, the ground wire 38 is attached to the main body mounting portion 24 and extends from the main body mounting portion 24 toward the opposite side of the power source portion 22 to connect to the output portion 35 of the power source portion 22. Since the wiring structure between the spring receiving metal fitting 43 on the other end side is simplified, the attachment hole 31 or the mounting hole 32 between the output portion 35 of the power supply section 22 and the spring receiving metal fitting 43 on the other end side The ground wire 38 does not interfere with the operation of the nut on the suspension bolt passed through the mounting hole 31 or the operation of the screw through the mounting hole 32, and the ground wire 38 is sandwiched by the nut or screw. Nor.

Also, after installing the instrument main body 20 , the power cable is connected to the terminal block 21 .

While lifting the pair of mounting springs 69 of the light source unit 12 from the chassis 60 against the spring force, the tip side of the arm portion 71 of the mounting spring 69 is moved from the central side of the instrument main body 20 to the engagement opening 46 of the spring bracket 43 . The light source unit 12 is suspended from the fixture main body 20 by inserting it and hooking it on the hook part 47 . The connector 39 of the body wiring unit 36 pulled out from the other end side of the fixture body 20 and the connector 66 of the light source wiring unit 65 pulled out from the other end side of the light source unit 12 are connected.

By pushing up the light source unit 12 toward the instrument main body 20, the spring force of the mounting spring 69 causes the arm portion 71 of the mounting spring 69 to move to the outer end side in the longitudinal direction of the instrument main body 20 with respect to the spring bracket 43. While doing so, the light source unit 12 is pulled up and attached to the fixture main body 20, and the installation is completed.

When external power is supplied to the power supply unit 22 of the lighting device 10 , the power supply unit 22 converts the external power into predetermined lighting power, which is passed through the main body wiring unit 36 and the light source wiring unit 65 to the light source unit 12 . is supplied to the light source 61, and the light source 61 lights up.

The fixture main body 20 and the light source unit 12 are electrically connected through the ground wire 38 of the main body wiring unit 36 and the ground wire of the light source wiring unit 65, and ground continuity (functional ground) is established between the fixture main body 20 and the light source unit 12. Secured.

Also, the mounting structure of the ground wire 38 to the main body mounting portion 24 may be the mounting structure shown in the second embodiment in FIGS.

The mounting plate portion 44 of the spring bracket 43 which is the main body mounting portion 24 is provided with a burring portion 80 which is a ground wire connection portion to which the ground wire 38 is connected. The burring portion 80 is located on one side of the mounting plate portion 44 in the width direction, and is cylindrically protruded from the upper surface of the mounting plate portion 44 by burring on one side in the width direction of the support plate portion 45 .

A ring-shaped crimp terminal 81 is used as a ground wire terminal for the ground wire 38 .

Then, the crimp terminal 81 of the ground wire 38 is fitted around the burring portion 80 of the main body mounting portion 24, and the tip side of the burring portion 80 is crimped so that the tip side of the burring portion 80 widens to the outer diameter side. is crimped onto the crimp terminal 81 to electrically connect the crimp terminal 81 to the body mounting portion 24 and mechanically fix it.

The ground wire 38 may be attached to the body attachment portion 24 before the body attachment portion 24 is attached to the device body 20, or the ground wire 38 may be attached after the body attachment portion 24 is attached to the device body 20. may be installed.

As described above, according to the lighting device 10, the ground wire 38 is electrically connected to and attached to the body attachment portion 24 instead of the power source portion 22, and only the output line 37 is wired from the power source portion 22. The wiring structure from the power supply section 22 can be simplified.

Therefore, when mounting using the mounting hole 31 or the mounting hole 32 between the output section 35 of the power supply section 22 and the spring receiving metal fitting 43 on the other end side facing the output section 35, the suspension that is passed through the mounting hole 31 is used. The ground wire 38 does not interfere with the operation of the nut on the bolt or the operation of the screw through the mounting hole 32, and the ground wire 38 is not pinched by the nut or screw.

Moreover, the length of the ground wire 38 can be made shorter than the length of the output wire 37 by the length corresponding to the distance between the power supply section 22 and the main body mounting section 24, so that the configuration can be simplified and inexpensive. , the output line 37 and the ground line 38 can be easily distinguished from each other by the length, and wiring errors can be prevented.

In addition, since the ground wire 38 extends from the main body mounting portion 24 toward the opposite side of the power source portion 22, the device main body using the mounting holes 31 and 32 between the power source portion 22 and the main body mounting portion 24 can be connected. It is possible not to interfere with the mounting work of 20.

Further, since the ground wire 38 is attached to the mounting plate portion 44 of the main body mounting portion 24 that is attached along the inner surface of the instrument body 20, the ground wire 38 can be routed along the inner surface of the instrument body 20. The wire 38 can be prevented from interfering with the attachment work of the instrument body 20.例文帳に追加

Further, when the Faston terminal 40 is used to attach the ground wire 38 to the main body mounting portion 24, the Faston terminal 40 can be easily attached to the tab terminal portion 49 of the main body mounting portion 24, and can be automated.

Further, by using a burring structure to attach the ground wire 38 to the main body mounting portion 24, the ground wire 38 can be firmly fixed to the main body mounting portion 24, and electrical connection can be reliably maintained.

Further, by using the Faston terminal 40 or using a burring structure to attach the ground wire 38 to the main body attachment portion 24, nuts and screws can be omitted, and the number of parts can be reduced.

Moreover, since the ground connection portion (the tab terminal portion 49 and the burring portion 80) for connecting the ground wire 38 can be formed integrally with the body mounting portion 24, the number of parts can be reduced in this respect as well.

The structure of the main body mounting portion and the structure of the light source mounting portion of the mounting mechanism 23 may be reversed.

Further, the mounting mechanism 23 may use the mounting spring 69 for the main body mounting portion 24 and the spring bracket 43 for the light source mounting portion 63 . Furthermore, the mounting mechanism 23 may use a mounting structure other than the spring bracket 43 and the mounting spring 69 .

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

REFERENCE SIGNS LIST 10 lighting device 12 light source unit 20 fixture main body 22 power supply section 23 mounting mechanism 24 main body mounting section 31, 32 mounting hole 38 ground wire 44 mounting plate section 63 light source mounting section

Claims (4)

a metallic instrument body;
a power supply unit disposed in the instrument body;
a light source unit detachable from the fixture body;
and a light source mounting portion mounted to the light source unit. an attachment mechanism that is detachably attached to the instrument body;
a ground wire electrically connected to and attached to the main body attachment portion and electrically connected to the light source unit;
A lighting device comprising: 2. The lighting device according to claim 1, wherein the ground wire extends from the main body attachment portion toward the opposite side of the power source portion. 3. The lighting device according to claim 2, wherein the fixture body has a mounting hole for installing the fixture body between a position where the power supply section is arranged and a position where the body mounting section is mounted. . The main body mounting portion has a mounting plate portion mounted along the inner surface of the instrument body,
The lighting device according to any one of claims 1 to 3, wherein the ground wire is attached to the mounting plate portion.

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