WO2020230386A1

WO2020230386A1 - Lighting device

Info

Publication number: WO2020230386A1
Application number: PCT/JP2020/005409
Authority: WO
Inventors: 奥村　明彦
Original assignee: アイリスオーヤマ株式会社
Priority date: 2019-05-10
Filing date: 2020-02-12
Publication date: 2020-11-19
Also published as: JP2020187848A

Abstract

The present invention provides a lighting device with which attachment can be facilitated even when there is no attachment tool on an installation surface.　This lighting device (X) is provided with an attachment unit (6) to be attached to the installation surface, and a fixture body (1) that is removably mounted to the attachment unit (6). The attachment unit (6) is provided with an attachment plate (7) to be attached to the installation surface, and a locking piece (8) that has a small diameter section and a large diameter section in order from the installation surface side, and is provided on the installation plate (6). The fixture body (1) has an attached section (32) which has a hole section (324) formed by adjoining a large hole section that allows the passage of the large diameter section and a small hole section that only allows the passage of the small diameter section. The large diameter section of the locking piece (8) is inserted from the large hole section of the hole section (324) of the attached section (32) and is locked to the periphery of the small hole section, whereby the fixture body (1) is mounted to the attachment unit (6).

Description

Lighting device

The present invention relates to a lighting device that is attached to an installation surface via a mounting plate.

As a lighting device installed on the ceiling or the like, which is the installation surface, there is one that uses a hook ceiling and an adapter provided in advance on the installation surface (for example, Patent Document 1).

Japanese Patent No. 5790923

The above-mentioned lighting device has a problem that it cannot be installed if a fixture such as a hook ceiling is not provided on the installation surface. A lighting device with a built-in adapter has also been proposed, and even in this case, it cannot be installed if a hook ceiling is not provided.
An object of the present invention is to provide a lighting device that can be easily attached when there is no attachment on the installation surface.

The lighting device according to the present invention includes a mounting unit mounted on the installation surface and an instrument body detachably mounted on the mounting unit, and the mounting unit includes a mounting plate mounted on the mounting surface and the installation. A large hole portion that has a small diameter portion and a large diameter portion from the surface side in this order and is provided with a locking tool provided on the mounting plate, and the instrument main body has a large hole portion that allows the passage of the large diameter portion and the above. It has an attached tool having a hole portion continuous with a small hole portion that allows passage of only the small diameter portion, and the large diameter portion of the locking tool is the large hole of the hole portion of the attached tool. The instrument body is mounted on the mounting unit by inserting it from the portion and locking it around the small hole portion.

According to the above configuration, it can be installed even if there is no fixture on the installation surface.

It is a perspective view which looked at the lighting device from the back side. It is a perspective view which shows the state which the instrument main body was removed from the mounting unit, (a) is the view which was seen from the front side, and (b) is the figure which was seen from the back side. It is sectional drawing of the instrument body. It is a perspective view which shows the state which the outer cover was removed from the instrument main body, (a) is the view which was seen from the front side, and (b) is the figure which was seen from the back side. It is a perspective view which looked at the state which separated the inner cover and the power-source cover from a base from the front side. It is a perspective view which looked at the state which separated the inner cover and the power-source cover from a base from the back side. It is a perspective view which looked at the state which separated the light source unit and the power-source board from a base, and looked at from the front side. It is a perspective view which looked at the state which separated the light source unit and the power-source board from a base from the back side. It is a perspective view which shows the disassembled state of the outer cover, (a) is the view which was seen from the front side, and (b) is the figure which was seen from the back side. It is a perspective view which looked at the disassembled state of a mounting unit from the front side. It is a perspective view which looked at the disassembled state of a mounting unit from the back side.

<Overview>
The lighting device according to one aspect of the embodiment includes a mounting unit mounted on the installation surface and an instrument body detachably mounted on the mounting unit, and the mounting unit includes a mounting plate mounted on the mounting surface. A large hole portion that has a small diameter portion and a large diameter portion in this order from the installation surface side and is provided with a locking tool provided on the mounting plate, and the instrument main body allows the passage of the large diameter portion. And the attached tool having a hole portion in which the small hole portion that allows the passage of only the small diameter portion is continuous, and the large diameter portion of the locking tool is the hole portion of the attached tool. The instrument body is mounted on the mounting unit by inserting it through the large hole and locking it around the small hole.

In the lighting device according to another aspect of the embodiment, the locking tool is composed of a male screw having at least a head and a threaded portion and a female screw screwed into the threaded portion, and the small diameter portion is the said male screw. It is composed of a threaded portion located between the head and the female screw, and the large diameter portion is composed of the female screw. As a result, the locking tool can be easily provided.
In the lighting device according to another aspect of the embodiment, the locking tool and the mounting plate are made of a metal material, and the mounting plate is inserted with the screw portion and accommodates the head between the mounting surface and the mounting surface. The head is housed in a state where it does not come into contact with the mounting plate via an insulating member. As a result, the insulating property between the locking tool and the mounting plate can be improved.
In the lighting device according to another aspect of the embodiment, the mounting unit has an insulating sheet that covers the mounting surface side of the mounting plate. As a result, the insulation between the installation surface and the locking tool can be improved.

In the lighting device according to another aspect of the embodiment, the mounting plate and the insulating sheet have through holes for inserting a power supply cable to the fixture body, and the mounted tool is attached to the mounting plate. It has a protruding portion that protrudes toward the through hole in a non-contact state and has a through hole through which the power supply cable is inserted. As a result, it is possible to prevent the power supply cable from coming into contact with the mounting plate.

<First Embodiment>
1. 1. Outline As shown in FIGS. 1 and 2, the lighting device X has an instrument main body 1 having a light source unit (2) and an attachment unit 6 for attaching the instrument main body 1 to an installation surface such as a ceiling or a wall. That is, as shown in FIG. 2, the lighting device X includes a mounting unit 6 fixed to the installation surface and an instrument main body 1 detachably mounted on the mounting unit 6.
The illuminating device X here has a circular shape when viewed from the light emitting direction, that is, from the irradiated surface side. The light emission direction is the front side, and the installation surface side is the back side.
Hereinafter, the instrument main body 1 will be described, and then the mounting unit 6 will be described.

2. Instrument body The instrument body 1 has at least a light source unit 2 having a plurality of LED elements 21 (see FIG. 7) as a light source and a base 3 on which the light source unit 2 is mounted, as shown in FIG. 7 or 8. The base 3 is provided with a mounted portion 32 for mounting the instrument body 1 side to the mounting unit 6.
The base 3 having the attached portion 32 corresponds to an example of the "attached tool" of the present invention.
In addition to the light source unit 2 and the base 3, the appliance main body 1 here includes a power supply unit 4 (see FIG. 4B) and a cover body 5 shown in FIG. As shown in FIG. 4A, the cover body 5 has an inner cover 51 that covers the light source unit 2 side, and an outer cover 53 that covers the light source unit 2 together with the inner cover 51.
As shown in FIG. 4, the light source unit 2, the base 3, the power supply unit 4, and the inner cover 51 are integrally assembled, and the integrated one is the device main body 10.
Each part will be described below.

(1) Light Source Unit This will be described mainly with reference to FIGS. 7 and 8.
The light source unit 2 includes a plurality of (for example, 3) light source boards 23 for mounting the plurality of LED elements 21, and has a connector 25 (see FIG. 7) for electrically connecting to the power supply unit 4 as the light source board. It has in 23. There are a plurality of types of the plurality of LED elements 21 having different light colors in order to enable color matching.
The light source substrate 23 has an arc shape, an "V" shape, and an "L" shape so as to form an annular shape (for example, a ring) as a whole. The two light source substrates 23 adjacent to each other in the circumferential direction are electrically connected by a jumper wire 27 (see FIG. 7). The jumper wire 27 is provided so as to connect two adjacent end portions 23a of the light source substrates 23 in the circumferential direction and to be curved in an arch shape on the front side.

(2) Base This will be described mainly with reference to FIGS. 7 and 8.
The base 3 has a plate shape, and has an annular portion 31 on which the light source unit 2 and the power supply unit 4 are mounted, an attached portion 32 provided inside the annular portion 31, and an outer peripheral portion provided outside the annular portion 31. It has 33 and. The annular portion 31 and the outer peripheral portion 33 are made of a metal material, and the attached portion 32 is made of a resin material. Here, the annular portion 31, the outer peripheral portion 33, and the attached portion 32 are integrally molded by, for example, insert molding. The annular portion 31 and the outer peripheral portion 33 may be referred to as a base main body 30.

(2-1) Circular portion The annular portion 31 has a flat shape, and here, the light source unit 2 is mounted on the front surface and the power supply unit 4 is mounted on the back surface. The annular portion 31 has a plurality of (for example, 3) recessed portions 34 recessed in the back side at a portion corresponding to the opposite ends of the two light source substrates 23 adjacent to each other in the circumferential direction of the light source unit 2. .. The recessed portion 34 also has a reinforcing function.
The recessed portion 34 has an oval shape that is long in the radial direction. The radial direction coincides with the direction in which the circumferential ends of the two adjacent light source substrates 23 face each other. The ground wire 44B of the power supply unit 4 is connected to one of the recessed portions 34. The recessed portion 34 is set so that the creepage distance between the jumper wire 27 connecting the two adjacent light source substrates 23 and the bottom portion of the recessed portion 34 is 2.5 mm or more.
The connection of the ground wire 44B is easily and surely performed by screwing the screw 101 connected to the ground wire 44B into the shrimp nut (blind nut) 36 of the annular portion 31. The screw 101 inserts a crimp terminal 103 connected to the ground wire 44B. Here, the creepage distance between the jumper wire 27 and the shrimp nut 36 in the recessed portion 34 is set to be 2.5 mm or more.

(2-2) Attached portion The attached portion 32 has a lid-shaped tubular shape on the back side from the inner peripheral edge of the annular portion 31, and has a lid portion 321 and a tubular portion 322 and an outer flange portion 323 (see FIG. 7). , The outer flange portion 323 is attached to the inner peripheral edge portion of the annular portion 31. The mounted portion 32 is made of a highly transparent resin material in order to facilitate mounting with the mounting unit 6.

As shown in FIG. 8, the attached portion 32 has one or a plurality (for example, two) holes 324 in the lid portion 321. The hole portion 324 has only a large hole portion 324a that allows the female screw (large diameter portion) 83 (see FIG. 10) of the locking tool 8 of the mounting unit 6 to pass through and a screw portion (small diameter portion) 813 of the locking tool 8. It has a shape in which the small hole portion 324b that allows the passage of the small hole portion 324b is continuous. The female screw (large diameter portion) 83 of the locking tool 8 is inserted from the large hole portion 324a of the hole portion 324 of the attached portion 32 and locked around the small hole portion 324b (the lid portion). By tightening the female screw 83, the instrument body 1 is attached to the attachment unit 6.
The large hole portion 324a has a shape (for example, a circular shape) corresponding to the female screw (large diameter portion) 83 of the locking tool 8, and the small hole portion 324b is in the virtual line segment connecting the centers of the two large hole portions 324a. It has a shape that extends in the direction of rotation when the instrument body 1 is rotated with respect to the mounting plate 7 with the point as the rotation axis.
The length of the small hole portion 324b in the rotation direction is substantially equal to or greater than the diameter of the female screw (large diameter portion) 83 of the locking tool 8. As a result, the instrument body 1 can be securely attached to the attachment unit 6. The rotation axis passes through the center of the instrument main body 1 (base 3) here.

The attached portion 32 has a protruding portion 325 protruding to the back side in the lid portion 321. The axis of rotation located between the centers of the two foramen magnums 324a is located inside the protruding portion 325. The inside of the protruding portion 325 is a space for passing a power supply cable (not shown) for supplying power to the power supply unit 4. The power supply cable is connected to the commercial power supply side.
The protruding portion 325 projects in a tubular shape toward the through hole 711 of the mounting plate 7 without contacting the mounting plate 7. As a result, the insulation between the power supply cable and the base 3 can be improved. The protruding portion 325 may protrude in the shape of a covered cylinder, and the lid portion may have a through hole for a cable.

The attached portion 32 has an oval shape or a shape similar to an oval shape when viewed from the back side. The attached portion 32 has a stepped portion 326 that fits with the opening 480 of the power supply cover 48 described later at the connecting portion between the lid portion 321 and the tubular portion 322 corresponding to the arc-shaped portion when viewed from the back side. doing. As a result, the power supply cover 48 is restricted from rotating with respect to the base 3.
The attached portion 32 has a through hole 327 (see FIG. 8) for a connection cable 44A that electrically connects the power supply unit 4 and the light source unit 2 so as to straddle the cylinder portion 322 and the lid portion 321. The through hole 327 may be provided in the tubular portion.
The mounted portion 32 has a mounting mechanism for mounting the power supply cover 48. Here, the power supply cover 48 has a locking hole 328 (see FIG. 8) to which the locking piece 485 (see FIG. 6) locks.
The attached portion 32 has a fixing mechanism for fixing the connection terminal block 43 for connecting the power supply cable to the attached portion 32. For fixing here, a screw is used, and a screw hole 329 (see FIG. 7) is provided in the lid portion 321 of the attached portion 32.

(2-3) Outer peripheral portion The outer peripheral portion 33 has a rotating body shape having a cross-sectional shape protruding to the back side in a "U" shape (see FIG. 3), and the inner peripheral edge is connected to the outer peripheral edge of the annular portion 31. There is. A groove portion 331 is formed on the outer peripheral portion 33 by the "U" shape (see FIG. 7), and the outer cover mounting portion 515 of the inner cover 51 is fitted into the groove portion 331 from the front side.

(3) Power Supply Unit This will be described mainly with reference to FIGS. 5 to 8.
The power supply unit 4 receives power from a commercial power source and generates lighting power for lighting the light source unit 2. As shown in FIG. 8, the power supply unit 4 includes a plurality of electronic components 41 (in FIG. 8, only some electronic components are shown) constituting a circuit for generating lighting power, and a plurality of electronic components. It has at least a power supply board 42 on which the electronic component 41 is mounted in a predetermined connection form, and is fixed to the back surface of the annular portion 31 of the base 3. The power supply board 42 here has a shape that matches the shape of the annular portion 31, for example, an “L” shape.

As shown in FIG. 8, the power supply unit 4 includes a connector 45 on the power supply board 42 for connecting to a connection terminal block 43 provided on the front side of the mounted portion 32 of the base 3. The connection is made via the connection cable 44A.
As shown in FIG. 8, the power supply unit 4 has a connector 46 on the power supply board 42 for connecting to the connector 25 (see FIG. 7) of the light source unit 2. The

connectors

45 and 46 are, for example, female connectors, and are connected via lead wires 92 to which male connectors are connected to both ends. The lead wire 92 is led out to the front side through the through hole 315 (see FIG. 7) of the base 3.
The power supply unit 4 includes an insulating sheet 47 for ensuring insulation between the power supply board 42 and the back surface of the metal annular portion 31 of the base 3. The insulating sheet 47 has one or a plurality of through holes 471 and notches for fixing tools for fixing the power supply board 42 to the base 3 side.

As shown in FIGS. 5 and 6, the power supply unit 4 includes a power supply cover 48 that covers the power supply board 42 on which the electronic components 41 and the like are mounted from the back side.
The power supply cover 48 has a facing portion 481 facing the power supply substrate 42 and the annular portion 31 of the base 3 and having an opening 480 in the center, and an outer extending portion 482 extending from the outer peripheral edge of the facing portion 481 to the front side.

The central opening 480 of the facing portion 481 fits into the stepped portion 326 (see FIG. 8) of the attached portion 32 of the base 3. That is, the opening 480 matches the shape of the lid portion 321 of the attached portion 32 when viewed from the back side. Here, it has an oval shape.
The periphery of the opening 480 of the facing portion 481 is a recessed portion 483 that is recessed to the front side of the surface 481b located on the outer peripheral side of the facing portion 481.
The recessed portion 483 has a shape close to a circle larger than the circular portion 713 (see FIG. 10 or FIG. 11) of the mounting plate 7. Specifically, the portion of the pair of arc portions forming the oval-shaped opening 480 that is located outside the opening edge has an arc shape with a first radius that is larger than the circular portion 713 of the mounting plate 7, and is a parallel portion. The portion located outside the opening edge of is formed in an arc shape having a second radius larger than the first radius.
In the recessed portion 483, the region between the arc of the first radius and the opening 480 is the

first region

483a, 483b, and the region between the arc of the second radius and the opening 480 is the

second region

483c, 483d. And. The

first regions

483a and 483b and the

second regions

483c and 483d exist alternately in the circumferential direction.

The facing portion 481 has an

upright portion

484a, 484b, 484c, 484d standing on the back side in the recessed portion 483 as shown in FIG. The

erection portions

484a and 484b are located at the circumferential ends of one second region 483d, and the

erection portions

484c and 484d are located at both ends of the other second region 483c in the circumferential direction.
The

vertical portions

484a, 484b, 484c, and 484d are radially connected to the circular side portion 731 (see FIG. 11) of the rib portion 73 of the mounting plate 7 of the mounting unit 6 when the instrument body 1 is mounted on the mounting unit 6. Contact or approach from the outside. That is, the

upright portions

484a, 484b, 484c, and 484d function as guide portions when mounting the instrument main body 1 on the mounting unit 6.
The

erection portions

484a, 484b, 484c, and 484d are provided at intervals in the circumferential direction. An extended portion 715,717 of the mounting plate 7 is located between the standing portion 484a and the standing portion 484b, and between the standing portion 484c and the standing portion 484d. The angle between the upright portion 484a and the upright portion 484b and the angle between the upright portion 484c and the upright portion 484d are from the rotation angle of the instrument body 1 when the instrument body 1 is mounted on the mounting unit 6. It is set slightly larger. As a result, the instrument body 1 can be smoothly attached to the attachment unit 6.
As shown in FIG. 1, the back side ends of the standing

portions

484a, 484b, 484c, and 484d are flush with the back side of the mounting plate 7. As a result, the standing

portions

484a, 484b, 484c, and 484d do not interfere with the installation surface.

The outer extending portion 482 has an arc portion 482a extending along the arc portion 481a of the facing portion 481. The arc portion 482a is stretched in a “V” shape on the front side, and the stretched tip portion abuts on the back surface of the outer peripheral portion 33 of the base 3.

The power supply cover 48 has a plurality of through holes 486 that communicate the inside and outside of the power supply cover 48 in order to dissipate heat from the electronic component 41, the power supply board 42, and the like in or around the connecting portion between the facing portion 481 and the outer extension portion 482. Have.
The power supply cover 48 has a fixed portion to the base 3. Specifically, as shown in FIG. 5, the power supply cover 48 extends from the recessed portion 483 to the front side and engages with the locking hole 328 of the attached portion 32 from the locking piece 485 and the facing portion 481. It has a through hole 487b formed at the bottom of a boss 487a extending in a bottomed tubular shape on the front side. A screw (not shown) screwed into the screw hole of the base 3 is inserted into the through hole 487b.

(4) Cover body The cover body 5 covers the light source unit 2 from the front side and is mounted on the base 3 as shown in FIG. 5, and the base 3 is covered from the front side and the inner cover as shown in FIG. It has an outer cover 53 attached to 51.
Hereinafter, each cover will be described.

(4-1) Inner cover The inner cover 51 is made of a translucent resin material, and is attached to the outer peripheral portion 33 of the base 3 with screws (not shown).
As shown in FIG. 5, the inner cover 51 has an annular bulging portion 511 that is annular and bulges to the front side when viewed from the front side, and an inner back extending from the inner peripheral edge of the annular bulging portion 511 to the back side. It has a collar portion 512 and an outer collar portion 513 extending from the outer peripheral edge of the annular bulging portion 511.
The inner cover 51 is composed of two members having the same configuration, has end-side back extending portions 514 extending from both ends in the circumferential direction of the annular bulging portion 511 to the back side, and two ends adjacent to each other in the circumferential direction. The side back extending portions 514 are attached to the base 3 in a state of being in contact with each other. The end-side back extension portion 514 is in close proximity to or in contact with the light source substrate 23 of the light source unit 2 to support the light source unit 2 from the front side.
When the inner cover 51 is attached to the base 3, as shown in FIG. 3, the inner back flange portion 512 comes into contact with the inner peripheral edge portion of the annular portion 31 of the base 3, and becomes the outer peripheral portion 511a of the annular bulging portion 511. The outer flange portion 513 is located in the groove portion 331 of the outer peripheral portion 313 of the base 3. In this state, the back end of the outer flange portion 513 approaches or abuts on the bottom of the groove portion 331.

The inner cover 51 has a plurality (for example, four) outer cover mounting portions 515 for the outer cover 53. Here, by rotating the outer cover 53 in one direction around an axis (also referred to as a central axis) passing through the center of the base 3, the outer cover mounting portion 515 and the outer cover 53 inner cover mounting portion 553 (FIG. 9). See) engages.
As shown in FIGS. 5 and 6, the outer cover mounting portion 515 has an overhanging portion 516 protruding outward in the radial direction from the outer peripheral edge of the annular bulging portion 511 and a circumferential overhanging portion 516. It has an upright portion 517 that is erected on the back side and is connected to the outer flange portion 513 at an end portion in one direction. As a result, the rotation of the outer cover 53 when attached to the inner cover 51 is restricted in one direction.

(4-2) Outer cover This will be described mainly with reference to FIG.
The outer cover 53 is made of a translucent resin material, and has a back cover 55 attached to the inner cover 51 (see FIG. 4) and a front cover 57 attached to the back cover 55. The back cover 55 and the front cover 57 are so-called milky white covers containing diffusion particles and the like.

The back cover 55 includes a back cover main body 551 that expands on the front side (here, an annular shape), an inner cover mounting portion 553 provided around an opening inside the back cover main body 551, and a back cover main body 551. It has a front cover mounting portion 555 which is provided at the front end portion of the above and engages with the back cover mounting portion 573 of the front cover 57.
The inner cover mounting portion 553 uses an engaging structure for mounting with the inner cover 51. For example, due to the relative rotation of the outer cover 53, the inner cover mounting portion 553 and the inner cover 51 mounting portion 515 for the outer cover Engage with. It should be noted that there are a plurality (for example, four) of the inner cover mounting portions 553 at intervals in the circumferential direction.
The front cover mounting portion 555 uses an engaging structure for mounting with the front cover 57. For example, by pressing the front cover 57 against the back cover 55 in the proximity direction, the back cover mounting portion of the front cover 57 is mounted. The 573 and the front cover mounting portion 555 of the back cover 55 engage with each other. There are a plurality (for example, eight) of front cover mounting portions 555 at intervals in the circumferential direction.

The front cover 57 has a dome portion 571 that is circular and has a dome shape as a whole when viewed from the front side, a tubular portion 572 provided on the opening side of the dome portion 571, and a back cover provided on the tubular portion 572. It has a mounting portion 573.
There are a plurality (for example, eight) of the back cover mounting portions 573 at intervals in the circumferential direction, and they engage with the front cover mounting portion 555 of the back cover 55 as described above.

3. 3. The mounting unit will be described mainly with reference to FIGS. 10 and 11.
The mounting unit 6 has a mounting plate 7 mounted on the installation surface, a small diameter portion (81) and a large diameter portion (83) from the installation surface side in this order, and a locking tool 8 provided on the mounting plate 7. To be equipped with.
The large diameter portion (83) of the locking tool 8 is inserted from the large hole portion 324a of the hole portion 324 of the attachment portion 32 of the instrument body 1 and locked around the small hole portion 324b (see FIG. 8). As a result, the instrument body 1 is attached to the attachment unit 6.
The locking tool 8 here includes a male screw 81 having at least a head portion 811 and a screw portion 813, and a female screw 83 screwed into the screw portion 813. The small diameter portion is composed of a screw portion (813) located between the head 811 of the male screw 81 and the female screw 83, and the large diameter portion is composed of the female screw 83.
The male screw 81 here is housed in the mounting plate 7 via the insulating member 85. The mounting unit 6 may include an insulating sheet 9 for ensuring the insulating property between the mounting surface and the mounting plate 7.
Each part will be described below.

(1) Mounting plate The mounting plate 7 is made of, for example, a metal plate, and has a flat plate portion 71 and a rib portion 73. Thereby, sufficient structural strength characteristics can be obtained.
The mounting plate 7 has an accommodating portion 75 through which the threaded portion 813 of the male screw 81 is inserted and the head 811 is accommodated between the mounting surface and the mounting surface.

(1-1) Flat plate portion The flat plate portion 71 has a circular portion 713 having a through hole 711 in the center, and a plurality of stretched

portions

715 and 717 extending in the radial direction from the circular portion 713 to the circular portion 713. The circular portion 713 can be said to be an annular portion including the through hole 711.
As shown in FIGS. 1 and 2, the protruding portion 325 of the instrument main body 1 (attached portion 32) is fitted into the through hole 711 of the circular portion 713. As a result, the instrument body 1 is positioned with respect to the mounting unit 6. In addition, in FIG. 1 and FIG. 2 (b), the circular portion 713 does not appear because of the insulating sheet 9.
As shown in FIGS. 10 and 11, the circular portion 713 has a recessed portion on the front side at a position sandwiching the through hole 711. The recessed portion constitutes the above-mentioned accommodating portion 75. There are two recessed parts here. The two recessed portions are located at a portion that passes through the center of the circular portion 713 and is orthogonal to the stretching direction of the two extending

portions

715 and 717. The recessed portion is recessed in a bottomed tubular shape and has a through hole 751b in the bottom portion 751a. The recessed portion (accommodating portion 75) has a so-called tapered shape in which the opening area becomes smaller as it moves toward the front side. That is, the tubular portion 751c of the recessed portion is an inclined surface.
The circular portion 713 has elongated

holes

751d and 751e between the stretched

portions

715 and 717 and the through holes 711. The elongated hole 751d on the stretched portion 715 side is stretched in the radial direction. The elongated hole 751e on the stretched portion 717 side is stretched in a direction orthogonal to the radial direction. As a result, the degree of freedom of mounting the mounting plate 7 on the mounting surface can be increased.

There are two stretched

portions

715 and 717 here with the center of the circular portion 713 in between. In other words, the two extending

portions

715 and 717 are located on a virtual line segment that passes through the center of the circular portion 713 and is orthogonal to the virtual line segment connecting the centers of the two through holes 751b. The lengths of the two stretched

portions

715 and 717 from the center of the through holes 711 are the same.
One stretched portion 715 has one or more first elongated holes 715a that are long in a direction orthogonal to the stretching direction. Here, two are held in parallel. The other stretched portion 717 has one or more second elongated holes 717a that are long in a direction parallel to the stretching direction. I have one here. As a result, the degree of freedom of mounting on the mounting surface of the mounting plate 7 can be increased. The first elongated hole 715a of the stretched portion 715 is formed in a direction orthogonal to the elongated hole 751d of the circular portion 713. The second elongated hole 717a of the stretched portion 717 is formed in a direction orthogonal to the elongated hole 751e of the circular portion 751. As a result, even when the mounting plate 7 is attached to the installation surface with screws or the like using the

elongated holes

751d, 751e, the first elongated holes 715a, and the second elongated holes 717a, the degree of freedom in the position where the screws are provided is high, and there are various types. It can be installed corresponding to the installation surface of.
The stretched portion 715 has one or more through holes 715b in addition to the first elongated hole 715a. The stretched portion 717 has one or more through holes 717b in addition to the second elongated hole 717a. As a result, the mounting plate 7 can be firmly mounted on the mounting surface.

(1-2) Rib portion The rib portion 73 bends from the peripheral edge of the flat plate portion 71, excluding the edges of the stretched

portions

715 and 717 in the stretching direction, to the side opposite to the installation surface. As a result, the flat plate portion 71 can be structurally reinforced.
The rib portion 73 has a circular side portion 731 provided on the peripheral edge of the circular portion 713, and

stretch side portions

733 and 735 provided on the edge parallel to the stretching direction of the stretched

portions

715 and 717. The amount of stretching of the stretched

side portions

733 and 735 to the front side is smaller than the amount of stretching of the circular side portion 731 to the front side.

(2) Locking tool The locking tool 8 is composed of a male screw 81 and a female screw 83 as described above.
The shape of the head 811 of the male screw 81 is hexagonal.
The female screw 83 is a type that can be rotated by a human hand while holding the outer peripheral surface, and the instrument main body 1 can be easily attached to the mounting plate 7 without the need for a tool. The female screw 83 has a groove on the front end surface for fitting with a screwdriver. As a result, the locking tool 8 can be operated by a general tool such as a screwdriver, and the device main body 1 can be easily attached to the mounting plate 7 without the need for a special tool or the like. As the female screw 83, for example, a nut with a slit can be used.
In the male screw 81, the screw portion 813 inserts the through hole 751b of the flat plate portion 71, and the head portion 811 is accommodated in the accommodating portion 75. The male screw 81 is housed via the insulating member 85 so as not to come into contact with the mounting plate 7.

(3) Insulating Member The insulating member 85 has a head portion 851 and a body portion 853, and is provided with a through hole 855 that linearly penetrates the head portion 851 and the body portion 853.
The appearance of the head 851 has a truncated cone shape that extends on the back side, and has a recessed portion 851a into which the head 811 of the male screw 81 fits, as shown in FIG. When viewed from the back side, the recessed portion 851a has a hexagonal shape that is the same shape as the head 811 of the male screw 81. As a result, the male screw 81 is restricted from rotating with respect to the insulating member 85.
The body portion 853 inserts the through hole 751b of the accommodating portion 75. The cross-sectional shape of the body portion 853 corresponds to the shape of the through hole 751b of the accommodating portion 75, and here, it is configured to be non-circular. As a result, the insulating member 85 is restricted from rotating with respect to the accommodating portion 75. The non-circular shape here has a shape similar to an oval in both the body portion 853 and the through hole 751b.
The body portion 853 is configured such that its front end extends from the through hole 751b in a state of being accommodated in the accommodating portion 75. As a result, the threaded portion 813 of the male screw 81 that is inserted into the insulating member 85 does not come into contact with the through hole 751b of the mounting plate 7, and the insulating property can be ensured even if the male screw 81 is made of a metal material.

(4) Insulation sheet The insulation sheet 9 is arranged between the mounting plate 7 and the installation surface. As a result, even if the mounting plate 7 is made of a metal material, the insulation property with the installation surface side can be improved.
The insulating sheet 9 is made of a resin material. The insulating sheet 9 is composed of a sheet body 91, and the sheet body 91 is provided with a plurality of through holes. The insulating sheet 9 has a size that covers the mounting plate 7 from the back side. The insulating sheet 9 has the same or substantially the same shape as the mounting plate 7 viewed from the back side. Specifically, the seat body 91 integrally has a circular portion 911 corresponding to the circular portion 713 of the mounting plate 7 and an

elongated portion

913, 915 corresponding to the stretched

portions

715 and 717.
The insulating sheet 9 has a through hole 93 for inserting a power supply cable to the instrument main body 1 so as to correspond to the through hole 711 of the mounting plate 7. That is, the insulating sheet 9 has a through hole 93 at the center of the circular portion 911. The through hole 93 is smaller than the through hole 711 of the mounting plate 7. This makes it difficult for the power supply cable to come into contact with the through hole 711 of the mounting plate 7.

The insulating sheet 9 has one or more through holes for inserting screws or the like when mounting the mounting plate 7 on the installation surface, corresponding to the through holes of the mounting plate 7.
In the circular portion 911, an elongated hole 911d is provided corresponding to the elongated hole 751d of the circular portion 713 of the mounting plate 7, and an elongated hole 911e is provided corresponding to the elongated hole 751e.
The stretched portion 913 is provided with a first elongated hole 913a corresponding to the first elongated hole 715a of the stretched portion 715 of the mounting plate 7, and a through hole 913b corresponding to the through hole 715b.
In the stretched portion 915, a second elongated hole 915a is provided corresponding to the second elongated hole 717a of the stretched portion 717 of the mounting plate 7, and a through hole 915b is provided corresponding to the through hole 717b.
The insulating sheet 9 does not have a through hole in the portion of the locking tool 8 housed in the mounting plate 7 corresponding to the male screw 81, and the insulating sheet 9 covers the head 811 of the male screw 81 from the back side. (See FIG. 1). As a result, even if the male screw 81 is made of a metal material, the insulating property can be ensured. From the viewpoint of enhancing the heat insulating property with the male screw 81, an insulating sheet or a member corresponding to the insulating sheet may be provided so as to cover the male screw 81. That is, the insulating sheet may have a size that covers at least the male screw 81.

4. Mounting the instrument body to the mounting unit (1) Mounting the mounting plate on the mounting surface (1-1) Attaching the locking tool 8 to the mounting plate 7. Specifically, the insulating member 85 is housed in the accommodating portion 75 of the mounting plate 7, and the threaded portion 813 of the male screw 81 of the locking tool 8 is inserted through the through hole 855 of the insulating member 85 and the through hole 751b of the accommodating portion 75. The head 811 is accommodated in the accommodating portion 75 (the recessed portion 851a of the insulating member 85). After that, the female screw 83 is screwed into the screw portion 813.
(1-2) The insulating sheet 9 is provided on the back surface of the mounting plate 7. For example, the insulating sheet 9 is attached to the mounting plate 7 using double-sided tape. At the time of pasting, the through hole of the mounting plate 7 and the through hole of the insulating sheet 9 are made to correspond (align).
(1-3) The mounting plate 7 with the insulating sheet 9 is fixed to the installation surface with screws or the like. At this time, the power supply cable is led out to the front side from the through hole 93 of the insulating sheet 9 and the through hole 711 of the mounting plate 7.
When fixing with screws or the like, the first elongated hole 913a and the second elongated hole 915a of the insulating sheet 9 and the first elongated hole 715a and the second elongated hole 717a of the mounting plate 7 can be used, so that the insulating sheet 9 can be attached to the installation surface. There is a degree of freedom and the installation work becomes easy.

(2) Mounting the Instrument Body to the Mounting Unit The female screw (large diameter portion) 83 of the locking tool 8 of the mounting unit 6 is inserted from the large hole portion 324a of the mounted portion 32 of the base 3 of the device body 1. At this time, since the attached portion 32 of the instrument body 1 is made of a highly transparent resin material, the position of the locking tool 8 of the attachment unit 6 can be confirmed from the front side of the instrument body 1, and the insertion work is easy. It becomes.
Next, in the inserted state, the instrument body 1 is rotated around the central axis of the base 3 in the first direction. As a result, the female screw (large diameter portion) 83 engages around the small hole portion 324b, and the instrument main body 1 is mounted on the mounting unit 6.
At this time, since the front end of the rib portion 73 of the mounting unit 6 comes into contact with the recessed portion 483 in the power supply case 48, the dimensions of the mounting portion of the instrument body 1 to the mounting unit 6 in the front and back directions are set by hooking the sealing and the adapter. It can be smaller than the size of the mounting part with.

(3) Fixing the instrument body In the state where the instrument body 1 is mounted on the mounting unit 6, that is, the female screw (large diameter portion) 83 of the locking tool 8 is locked in the small hole portion 324b of the mounted portion 32. , The female screw 83 is rotated in the tightening direction. As a result, the peripheral portion (lid portion) of the small hole portion 324b of the attached portion 32 is sandwiched between the insulating member 85 and the female screw 83, and the instrument main body 1 is fixed.

5. Insulation of Lighting Device (1) In the fixture body 1, the members that come into contact with or are in close proximity to the mounting plate 7 are the mounted portion 32 of the base 3 and the power supply cover 48. Since the mounted portion 32 and the power supply cover 48 are made of a resin material, the insulating property can be improved even when the mounting plate 7 is made of a metal material.

(2) The male screw 81 and the female screw 83 constituting the locking tool 8 for locking the instrument main body 1 are attached to the accommodating portion 75 of the mounting plate 7 in a state where the male screw 81 does not come into contact with the mounting plate 7 via the insulating member 85. Be housed. Therefore, even when the mounting plate 7, the male screw 81 and the female screw 83 are made of a metal material, the insulating property can be improved.
Further, since the male screw 81 is covered with the insulating sheet 9, the male screw 81 does not come into contact with the installation surface, and the insulation property can be improved even when the conductive member is present on the installation surface.

(3) The power supply cable connected to the commercial power supply passes through the through hole 93 of the insulating sheet 9 through the inside of the protruding portion 325 of the mounted portion 32 of the instrument main body 1, and the connection terminal block on the front side of the mounted portion 32. Connected to 43. The protruding portion 325 of the mounted portion 32 made of a resin material is located inside the through hole 711 of the mounting plate 7 and is configured so as not to come into contact with the peripheral edge of the through hole 711. Therefore, the power supply cable does not come into contact with the mounting plate 7, and the insulation property with the power supply cable can be improved.

(4) The power supply cable is connected to a connection terminal block 43 provided on the front side of the resin-made attachment portion 32. Therefore, the power supply cable does not come into contact with the mounting plate 7 or the base body 30, and the insulating property can be improved.

Although the embodiment has been described above, the embodiment is not limited to this embodiment, and for example, the following modification may be used. Further, the embodiment, the modified example, and the modified example may be combined.
Further, even if there is an example not described in the embodiment or the modified example, or a design change within a range not deviating from the gist, the present invention is included.

<Modification example>
1. 1. Mounting the instrument body on the mounting unit In the embodiment, the device body 1 is mounted on the mounting unit 6 by rotating the device body 1 with respect to the mounting unit 6. That is, the small hole portion 324b extends from the large hole portion 324a along the rotation direction.
However, it suffices if the large diameter portion can be locked around the small hole portion by sliding the instrument body with the large diameter portion inserted through the large hole portion, and the large diameter portion is slid (rotated) in the circumferential direction as in the embodiment. It may be slid in a straight line direction. When sliding in a linear direction, it can be carried out by extending the small hole portion linearly from the large hole portion.

2. Instrument body (1) Overall The instrument body 1 has a circular shape when viewed from the front side, but may be square, rectangular, or elliptical, for example.
The fixture body 1 includes a light source unit 2, a base 3, a power supply unit 4, and a cover body 5. However, when the mounting structure of the fixture body 1 and the mounting unit 6 is invented, the fixture body is at least covered. A member corresponding to a fixture may be provided, and the configuration of the instrument body described in the embodiment may be different.
Further, when inventing an insulating structure between the appliance main body 1 and the mounting unit 6 and the power supply cable, the appliance main body includes at least a member corresponding to the attached tool and a power supply unit (particularly a connection terminal block). It may be different from the configuration of the instrument main body described in the embodiment.

(2) Light Source Unit In the embodiment, three light source boards 23 are connected by jumper wires 27, but for example, one light source board may be used. In this case, it may be formed in an annular shape or in a polygonal ring shape such as a quadrangular ring shape.
Further, instead of the jumper wire 27, for example, a connector may be provided on the power supply board and connected by a lead wire having connectors at both ends.
In the embodiment, the power supply unit is connected via a connector. For example, a pin-type male connector is provided on one of the power supply board or the light source board, and a female connector is provided on the other side of the power supply board or the light source board. It may be provided and directly connected with the base sandwiched between them.

(3) Base In the embodiment, the metal base main body 30 and the resin attached portion (attached tool) 32 are integrally formed by integral molding. For example, the base main body 30 and the attached tool are integrated. May be integrated by assembling after preparing separately. Further, although the attached tool uses a base, for example, an attached portion may be provided on the power supply cover to serve as a power supply cover.

(4) Power Supply Unit In the embodiment, the power supply unit 4 is provided on the back surface of the base 3, but it may be provided on the front surface or on both sides of the base 3. When both sides are provided, for example, a conversion circuit for converting AC to DC may be arranged on the back side, and a dimming circuit or a toning circuit may be arranged on the front side.
In the embodiment, the power supply unit is provided, but for example, when the lighting power is directly supplied (for example, the power supply circuit is arranged behind the installation surface), it is not necessary to provide the power supply unit. Even if the power supply unit 4 is not provided, it can be mounted on the mounting unit 6 because the mounted portion 32 of the base 3 exists.
Although the ground wire 44b is connected to the base 3 via the shrimp nut 36, it may be directly connected by using a blind fastener, or may be connected by solder or the like.
Further, the mounting plate 7 may be subjected to burring processing to connect the ground wire 44b to the mounting plate 7.

The power supply cover 48 of the embodiment has a recessed portion 483 at a portion that comes into contact with the front end of the rib portion 73 of the mounting unit 6, but it does not have to be recessed. However, if it is recessed, the size of the mounting portion of the instrument body 1 to the mounting unit 6 in the front-back direction can be reduced. The member that comes into contact with the front end of the rib portion 73 of the mounting unit 6 may be a power supply cover or a member other than the power supply cover. In the case of a lighting device that does not have the power supply unit 4 or has the power supply unit on the front side of the base, the member that comes into contact with the front end of the rib portion 73 of the mounting unit 6 may be the base, in which case it is the mounted portion. It may be an annular portion or it may be an annular portion.

(5) Cover Body In the embodiment, the inner cover 51 and the outer cover 53 are provided, and the inner cover 51 is fixed to the base 3. However, the structure may be such that the outer cover is fixed to the base and the inner cover 51 is not provided. To fix the outer cover to the base, for example, the outer cover is shaped like the front cover 57 and has a ring shape so that the front side portion of the attached portion 32 is open, and the back side end is fixed to the base. It should be.

3. 3. Mounting unit (1) Mounting plate In the embodiment, the mounting plate 7 has two stretched

portions

715 and 717, but may have three or more stretched portions. When having three or more stretched portions, it is preferable to have them at equal intervals in the circumferential direction.
The two stretched

portions

715 and 717 have the same length from the center of the through hole 711, but may not be the same.
Although the mounting plate 7 is made of a metal material, for example, an insulating layer may be provided on the front and back surfaces of the metal plate, or the entire surface of the metal plate may be covered with a resin material.
The number of accommodating portions (locking tools 8) 75 of the mounting plate 7 was two, but it may be three or more. In the case of three or more, it is preferable to have them at equal intervals in the circumferential direction.

(2) Locking Tool / Insulating Sheet The locking tool 8 utilizes a male screw 81 and a female screw 83, and the male screw 81 is housed in the mounting plate. For example, the female screw may be housed in the mounting plate. In this case, the head of the male screw functions as a large diameter portion.
In the embodiment, the insulating sheet has a sheet shape, but may have a rigid plate shape.

X Lighting device 1 Instrument body 2 Light source unit 3 Base (attached device)
4 Power supply unit 5 Cover body 6 Mounting unit 7 Mounting plate 8 Locking tool 9 Insulation sheet 32 Mounting part 83 Large diameter part (female screw)
324 Hole 324a Large Hole 324b Small Hole 813 Small Diameter (Screw)

Claims

A mounting unit that can be mounted on the mounting surface
It is equipped with an instrument body that can be detachably attached to the mounting unit.
The mounting unit is
A mounting plate mounted on the installation surface and
It has a small diameter portion and a large diameter portion in this order from the installation surface side, and is provided with a locking tool provided on the mounting plate.
The instrument body has a mounting tool having a large hole portion that allows the passage of the large diameter portion and a small hole portion that allows the passage of only the small diameter portion to be continuous.
The large-diameter portion of the locking tool is inserted from the large hole portion of the hole portion of the mounting tool and locked around the small hole portion, whereby the instrument body is mounted on the mounting unit. Lighting equipment.
The locking tool is composed of a male screw having at least a head and a threaded portion and a female screw screwed into the threaded portion.
The small diameter portion is composed of a threaded portion located between the head of the male screw and the female screw.
The lighting device according to claim 1, wherein the large diameter portion is composed of the female screw.
The locking tool and the mounting plate are made of a metal material.
The mounting plate has a housing portion through which the screw portion is inserted and the head portion is accommodated between the mounting surface and the mounting surface.
The lighting device according to claim 2, wherein the head is housed in a state of not contacting the mounting plate via an insulating member.
The lighting device according to any one of claims 1 to 3, wherein the mounting unit has an insulating sheet that covers the mounting surface side of the mounting plate.
The mounting plate and the insulating sheet have through holes for inserting a power supply cable to the instrument body.
The lighting device according to claim 4, wherein the attached tool has a protruding portion that protrudes toward the through hole without contacting the mounting plate and has a through hole through which the power supply cable is inserted.