Lighting fixture mounting device

Abstract

To provide a lighting fixture mounting device that can be used for various types of lighting fixtures by enabling the lighting fixture to be directly attached to and detached from a ceiling rosette without using an adapter, and can stabilize the lighting fixture attached to the ceiling rosette with respect to the ceiling. [Solution] The lighting fixture mounting device 100 comprises a mounting device main body 10 having a mounting surface 25, a pair of connecting blades 60 provided on the mounting surface 25, and a plurality of adjusters 70 arranged on the mounting surface 25 closer to the outer edge than the pair of connecting blades 60 and capable of adjusting the amount of protrusion so that the device abuts against the ceiling S when attached to a ceiling rosette SR, and an engaged portion 50 that engages with an engaging portion 220 provided on the lighting fixture main body 210 is provided on the side of the mounting device main body 10 so as to be detachably connected to the lighting fixture main body 210 of the lighting fixture 200.

Description

[Technical Field]

[0001] The present invention relates to a lighting fixture mounting device for mounting a lighting fixture to a ceiling rosette located on a ceiling. [Background technology]

[0002] BACKGROUND ART Conventionally, a lighting fixture mounting device for mounting a lighting fixture to a ceiling rosette arranged on a ceiling is known, for example, as the type disclosed in Patent Document 1.

[0003] This type of lighting fixture mounting device consists of an adapter body attached to the lighting fixture body and a hook plug that is circular in plan view and engages with the underside of the ceiling rosette. When attaching a lighting fixture to the ceiling rosette, the user operates the bottom of the hook plug to engage the adapter body with the hook plug. When removing the lighting fixture from the ceiling rosette, the user operates the bottom of the hook plug to disengage the adapter body from the hook plug. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2021-307537 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the above-mentioned type of lighting fixture mounting device, the lower part of the hook plug needs to be operated when attaching or detaching the lighting fixture to or from the ceiling rosette, so the lower part of the hook plug needs to be left open, which makes it difficult to place the power supply unit, control unit, etc. required for the lighting fixture below the hook plug.

[0006] For example, a lighting fixture with a ceiling fan function requires a drive motor to be located in the center of the lighting fixture. However, with the above-mentioned type of lighting fixture mounting device, it is not possible to place the drive motor below the hook plug. This has resulted in a problem in that the above-mentioned type of lighting fixture mounting device is limited in the types of lighting fixtures that can be used.

[0007] The purpose of this invention is to solve the above problems, and to provide a lighting fixture mounting device that can be used with various types of lighting fixtures by allowing lighting fixtures to be attached and detached directly to a ceiling rosette without using an adapter, and that can stabilize a lighting fixture attached to a ceiling rosette relative to the ceiling. [Means for solving the problem]

[0008] The lighting fixture mounting device of the present invention is a lighting fixture mounting device for mounting a lighting fixture to a ceiling rosette located on a ceiling, An attachment device body having an attachment surface that becomes an upper surface when attached to the ceiling rosette; a pair of connecting blades provided on the mounting surface; a plurality of adjusters disposed on the mounting surface closer to the outer edge than the pair of connecting blades, the adjusters being capable of adjusting the amount of protrusion so as to abut against the ceiling when the ceiling rosette is attached; Equipped with An engaged portion that engages with an engaging portion provided on the lighting fixture body is provided on a side portion of the mounting device body so that the mounting device body can be detachably connected to the lighting fixture body of the lighting fixture. [Effects of the Invention]

[0009] The lighting fixture mounting device of this invention allows lighting fixtures to be attached and detached directly to the ceiling rosette without the need for an adapter, making it possible to use it with various types of lighting fixtures and stabilizing the lighting fixture attached to the ceiling rosette relative to the ceiling. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1a is a plan view of the lighting fixture mounting device according to the first embodiment, and FIG. 1b is a side view of the lighting fixture mounting device. [Figure 2] FIG. 2 is a side view showing a state in which a lighting fixture to which the lighting fixture mounting device according to the first embodiment is applied is mounted to a ceiling rosette. [Figure 3] FIG. 3 is a cross-sectional view of the lighting fixture mounting device and the lighting fixture body taken along line AA in FIG. 1a. [Figure 4] FIG. 4 is a side view showing the lighting fixture attached to the ceiling rosette. DETAILED DESCRIPTION OF THE INVENTION

[0011] The lighting fixture mounting device according to one embodiment of the present invention is a lighting fixture mounting device for mounting a lighting fixture to a ceiling rosette arranged on a ceiling, An attachment device body having an attachment surface that becomes an upper surface when attached to the ceiling rosette; a pair of connecting blades provided on the mounting surface; a plurality of adjusters disposed on the mounting surface closer to the outer edge than the pair of connecting blades, the adjusters being capable of adjusting the amount of protrusion so as to abut against the ceiling when the ceiling rosette is attached; Equipped with An engaged portion that engages with an engaging portion provided on the lighting fixture body is provided on a side of the mounting device body so as to be detachably connected to the lighting fixture body of the lighting fixture (first configuration).

[0012] According to the above configuration, by connecting the lighting fixture body to the lighting fixture mounting device, the lighting fixture can be directly mounted to a ceiling rosette arranged on the ceiling. Furthermore, when the lighting fixture mounting device is attached to the ceiling rosette, the lighting fixture mounting device can be stabilized relative to the ceiling and ceiling rosette by adjusting the protrusion amount of the adjuster so that it abuts against the ceiling. This allows the lighting fixture to be stably attached to the ceiling.

[0013] In the first configuration, The lighting fixture body has a lighting fixture side opening formed at an upper portion thereof, The light source may be connected to close the lighting fixture opening, thereby forming a storage space inside the lighting fixture body (second configuration).

[0014] According to the above configuration, a storage space enclosed by the lighting fixture mounting device can be formed inside the lighting fixture body, so that components such as the lighting fixture's power supply unit can be stored inside.

[0015] In the second configuration, The mounting device body is an outer member having an outer wall that is arranged to be flush with a side surface of the lighting fixture body when connected to the lighting fixture body, and an outer top surface portion that is provided on an upper portion of the outer wall and forms the mounting surface; an inner member including an inner wall disposed inside the outer wall and on which the engaged portion is provided, and an inner top surface portion provided on an upper portion of the inner wall and disposed at a distance from the outer top surface portion; (third configuration).

[0016] According to the above configuration, when the lighting fixture mounting device and the lighting fixture body are connected, the outer surfaces are flush with each other, so that the lighting fixture mounting device and the lighting fixture body can be made to have a sense of unity. Furthermore, the lighting fixture mounting device and the lighting fixture body can be detachably connected to each other without exposing to the outside the engaging portion and the engaged portion for connecting the lighting fixture mounting device and the lighting fixture body.

[0017] In the third configuration, The adjuster is a contact portion that contacts the ceiling; a support shaft on an upper end of which the abutment portion is disposed and which adjusts the amount of protrusion of the abutment portion relative to the mounting device main body, The support shaft may be screwed into the mounting device main body, and a lower end side thereof may pass through the outer member and the inner member and protrude into the housing space (fourth configuration).

[0018] According to the above configuration, the support shaft of the adjuster can be made longer, thereby widening the adjustment range of the adjuster. Furthermore, since the lower end side of the support shaft is housed in the housing space, the lower end of the adjuster can be prevented from being exposed to the outside.

[0019] In the fourth configuration, a pair of terminals disposed on the underside of the outer top surface portion, electrically connected to the pair of connecting blades, and adapted to supply power to the lighting fixture body; an inner top surface opening formed in the inner top surface portion, The inner top surface opening is The opening may be configured to allow wires to be inserted through the opening, and also to serve as an access opening for connecting the wires to the pair of terminals (fifth configuration).

[0020] According to the above configuration, wiring can be connected to the terminals through the inner top surface opening. Furthermore, since the terminals are disposed between the outer top surface portion and the inner top surface portion, the terminals can be disposed isolated from the housing space.

[0021] In the fifth configuration, a locking mechanism is disposed between the outer top surface portion and the inner top surface portion, The operating portion of the locking mechanism may be provided so as to protrude outward beyond the outer wall (sixth configuration).

[0022] According to the above configuration, the locking mechanism is disposed between the outer top surface portion and the inner top surface portion, so that the locking mechanism can be disposed isolated from the accommodation space.

[0023] [Embodiment 1] Hereinafter, a lighting fixture mounting device 100 according to an embodiment of the present invention will be described in detail with reference to the drawings. In the following drawings, an arrow U indicates the upward direction of the lighting fixture mounting device 100, and an arrow D indicates the downward direction.

[0024] In the following drawings, the same or corresponding parts are designated by the same reference numerals, and their description will not be repeated. For ease of understanding, the drawings referred to below show simplified or schematic configurations, and some components are omitted. Furthermore, the dimensional ratios between components shown in each drawing do not necessarily represent the actual dimensional ratios.

[0025] [Overall configuration] Fig. 1a is a plan view of a lighting fixture mounting device 100 according to embodiment 1, and Fig. 1b is a side view of the lighting fixture mounting device 100. Fig. 2 is a side view showing a state in which a lighting fixture 200 to which the lighting fixture mounting device 100 according to embodiment 1 is applied is mounted in a ceiling rosette SR. Fig. 3 is a cross-sectional view of the lighting fixture mounting device 100 and the lighting fixture main body 210 taken along line AA in Fig. 1a. Fig. 4 is a side view showing a state in which the lighting fixture 200 has been mounted in a ceiling rosette SR.

[0026] As shown in Figures 1 to 4, the lighting fixture mounting device 100 is a device for mounting a lighting fixture 200 to a ceiling rosette SR arranged on a ceiling S. The lighting fixture mounting device 100 is connectable to a lighting fixture body 210 of the lighting fixture 200.

[0027] A ceiling rosette SR is a wiring device installed in a ceiling S. There are several types of wiring devices installed in a ceiling S, such as a round hook ceiling, a square hook ceiling, a round full hook ceiling, and a recessed rosette. The ceiling rosette SR can be any of these, and the type is not limited.

[0028] As shown in Fig. 1, the lighting fixture mounting device 100 has a mounting device main body 10. The mounting device main body 10 is composed of an outer member 20 and an inner member 40 (see Fig. 3). Both the outer member 20 and the inner member 40 are substantially cylindrical members that are open at the bottom and closed at the top.

[0029] The mounting device main body 10 has a mounting surface 25 that becomes the upper surface when mounted to the ceiling rosette SR. The mounting surface 25 is circular in plan view. The mounting surface 25 is provided with a pair of connecting blades 60, a plurality of adjusters 70, and a locking mechanism 80 (locking claw 81).

[0030] The pair of connecting blades 60 are provided in the center of the mounting surface 25. The pair of connecting blades 60 are inserted into the hook grooves of the ceiling rosette SR, and when rotated in a predetermined direction, they are electrically connected to the terminals inside the ceiling rosette SR and are supported by the ceiling rosette SR. When rotated in the opposite direction from the supported state, they are released from the connection with the ceiling rosette SR.

[0031] The multiple adjusters 70 are arranged on the mounting surface 25 closer to the outer edge than the pair of connecting blades 60. In this embodiment, three adjusters 70 are arranged concentrically at equal intervals. The amount of protrusion of each adjuster 70 from the mounting surface 25 is adjustable. When attaching the lighting fixture mounting device 100 to a ceiling rosette SR, the amount of protrusion of each adjuster 70 is reduced in advance, and with the lighting fixture mounting device 100 attached to the ceiling rosette SR, the amount of protrusion of each adjuster 70 is increased so that the lighting fixture mounting device 100 abuts against the ceiling S. This allows the lighting fixture mounting device 100 to be stably attached to the ceiling S and the ceiling rosette SR.

[0032] The locking mechanism 80 has a locking claw 81 and an operating unit 82. The locking claw 81 engages with the ceiling rosette SR when the lighting fixture mounting device 100 is attached to the ceiling rosette SR, preventing the lighting fixture mounting device 100 from being accidentally removed from the ceiling rosette SR. The locking claw 81 is biased in a direction that causes it to protrude relative to the mounting surface 25, and is configured to sink into the mounting surface 25 by pushing the operating unit 82. To remove the lighting fixture mounting device 100 from the ceiling rosette SR, the lighting fixture mounting device 100 is rotated while pushing the operating unit 82. This releases the engagement between the ceiling rosette SR and the locking claw 81, making it possible to remove the lighting fixture mounting device 100.

[0033] A plurality of engaged portions 50 are provided on the side of the mounting device main body 10. The engaged portions 50 engage with engaging portions 220 provided on the lighting fixture main body 210 of the lighting fixture 200, thereby detachably connecting the lighting fixture mounting device 100 and the lighting fixture main body 210 (see FIG. 3). In this embodiment, the engaged portions 50 are provided at three locations at equal intervals in the circumferential direction of the inner member 40.

[0034] [Lighting fixtures] As shown in Fig. 2, lighting fixture 200 according to this embodiment is a lighting device equipped with the function of a ceiling fan. Lighting fixture 200 is an example for explaining the lighting fixture mounting device according to the present invention. A lighting fixture to which the lighting fixture mounting device of the present invention can be applied is only required to have the function of a lighting fixture. There is no restriction on whether or not the lighting fixture has a ceiling fan function or other functions added in addition to its function as a lighting fixture.

[0035] The lighting fixture 200 has a lighting fixture body 210, a lighting unit 230, and a blower unit 240. Figure 2 shows a state in which the lighting fixture mounting device 100 is connected to the upper part of the lighting fixture body 210, and the lighting fixture 200 is attached to a ceiling rosette SR arranged on a ceiling S.

[0036] The lighting fixture body 210 is a part that forms the base of the lighting fixture 200. The lighting fixture body 210 has a side portion 211 and a bottom portion 212. The side portion 211 has a substantially cylindrical shape (see FIG. 3). The overall shape of the lighting fixture body 210 is a substantially cylindrical shape with a bottom. Inside the lighting fixture body 210, a drive unit (drive motor) 241 of the blower unit 240, a power supply unit 250 of the lighting unit 230, etc. are housed (see FIG. 3).

[0037] Illumination unit 230 has ring unit 231 and arm 232. Ring unit 231 is disposed below lighting fixture body 210 so as to surround blower unit 240. Ring unit 231 is provided with an LED light source, a light-transmitting unit, etc. (not shown).

[0038] The arms 232 are members that connect the lighting fixture body 210 and the ring portion 231. Three arms 232 are provided, and extend radially from the side portion 211 of the lighting fixture body 210 at equal intervals.

[0039] Blower 240 has a drive unit 241 and blades 243 (see FIG. 3). Drive unit 241 has a drive shaft 242 that protrudes downward from bottom 212 of lighting fixture body 210. Blades 243 are disposed inside ring-shaped ring portion 231 and are connected to drive shaft 242 of drive unit 241. Blades 243 rotate in the forward or reverse direction by the driving force of drive unit 241, thereby blowing air upward or downward.

[0040] [Internal structure] As shown in Fig. 3, the lighting fixture body 210 has a lighting fixture-side opening 215 formed at the top. The lighting fixture mounting device 100 is connected to close the lighting fixture-side opening 215. This forms an accommodation space AR inside the lighting fixture body 210. The accommodation space AR accommodates the drive unit 241 of the blower unit 240, the power supply unit 250 of the lighting unit 230, etc.

[0041] A plurality of engaging portions 220 are provided on the inside of the side portion 211 of the lighting fixture body 210. The plurality of engaging portions 220 are provided in three locations so as to correspond to the positions of the engaged portions 50 of the lighting fixture mounting device 100.

[0042] In this embodiment, the engaging portion 220 of the lighting fixture body 210 is a claw-shaped protrusion. The engaged portion 50 of the lighting fixture mounting device 100 has a step portion so that the engaging portion 220 can engage with it. The engaged portion 50 of the lighting fixture mounting device 100 has a groove portion 51 formed therein to guide the engaging portion 220 (see FIG. 1b).

[0043] When connecting the lighting fixture body 210 and the lighting fixture mounting device 100, the lower part of the lighting fixture mounting device 100 is inserted into the lighting fixture-side opening 215 while aligning the engaging part 220 of the lighting fixture body 210 with the groove part 51 of the lighting fixture mounting device 100. With the lower part of the lighting fixture mounting device 100 inserted into the lighting fixture-side opening 215, the lighting fixture mounting device 100 is rotated in a predetermined direction relative to the lighting fixture body 210, whereby the engaging part 220 and the engaged part 50 engage with each other, and the lighting fixture body 210 and the lighting fixture mounting device 100 are connected together.

[0044] The upper surface of the engaged part 50 is formed with wavy projections and recesses (see FIG. 1b), and similar projections and recesses are formed on the lower surface of the engaging part 220. This ensures that the engaging part 220 and the engaged part 50 are securely engaged with each other, preventing the connection between the lighting fixture body 210 and the lighting fixture mounting device 100 from being accidentally released.

[0045] When separating the lighting fixture main body 210 and the lighting fixture mounting device 100, the lighting fixture main body 210 and the lighting fixture mounting device 100 can be separated by rotating them in the opposite direction to when connecting them, thereby releasing the engagement between the engaging portion 220 and the engaged portion 50.

[0046] The outer member 20 and the inner member 40 that constitute the mounting device main body 10 are structured so that the inner member 40 is fixed below the outer member 20.

[0047] The outer member 20 has an outer wall 21 and an outer top surface portion 22. The outer wall 21 is a substantially cylindrical portion. The outer wall 21 is formed so as to be flush with the side surface of the lighting fixture body 210 (the outer surface of the side portion 211) when the lighting fixture mounting device 100 is connected to the lighting fixture body 210.

[0048] The outer top surface portion 22 is provided on the upper part of the outer wall 21. The outer top surface portion 22 is circular in a plan view and forms a mounting surface 25.

[0049] The inner member 40 has an inner wall 41 and an inner top surface portion 42. The inner wall 41 is a substantially cylindrical portion located inside the outer wall 21. The inner top surface portion 42 is provided on an upper portion of the inner wall 41. The inner top surface portion 42 is located at an interval between the inner top surface portion 42 and the outer top surface portion 22. Engagement portions 50 are provided at three locations along the circumferential direction on the side portion of the inner wall 41. In addition, a locking mechanism 80 (not shown) is located between the outer top surface portion 22 and the inner top surface portion 42. An operating portion 82 of the locking mechanism 80 is provided so as to protrude outward from the outer wall 21 (see FIG. 1).

[0050] The pair of connecting blades 60 are provided so as to penetrate the outer top surface portion 22, and are fixed from the underside of the outer top surface portion 22 by mounting screws 61. Terminals 62 electrically connected to each connecting blade 60 are provided on the underside of the outer top surface portion 22. Terminal screws 63 are provided on the terminals 62. Wiring that supplies power to the drive unit 241 of the air blower unit 240, the power supply device 250 of the lighting unit 230, etc. is electrically connected to the terminals 62 by the terminal screws 63. Note that a connector or the like may be used to electrically connect each terminal 62 to the wiring.

[0051] An inner top surface opening 43 is formed in the inner top surface portion 42. Wiring to be connected to the pair of terminals 62 is passed through the inner top surface opening 43. The inner top surface opening 43 also serves as an opening for connecting the wiring to the pair of terminals 62.

[0052] Each of the multiple adjusters 70 has an abutment portion 71 and a support shaft 72. The abutment portion 71 is a portion that abuts against the ceiling S when the lighting fixture mounting device 100 is attached to the ceiling rosette SR. The abutment portion 71 is located at the upper end of the support shaft 72. A male thread is formed on the support shaft 72. A nut 73 is sandwiched and fixed between the outer top surface portion 22 and the inner top surface portion 42. The support shaft 72 is threadedly engaged with this nut 73. The lower end of the support shaft 72 penetrates the inner top surface portion 42 and protrudes into the accommodation space AR. The multiple adjusters 70 can adjust the amount of protrusion of the abutment portion 71 from the mounting device main body 10 by rotating each support shaft 72 forward or backward.

[0053] 2 and 4, when attaching the lighting fixture 200 to the ceiling rosette SR arranged on the ceiling S, the lighting fixture mounting device 100 is connected in advance to the lighting fixture body 210 of the lighting fixture 200. In addition, the protrusion amount of each adjuster 70 is reduced in advance.

[0054] The pair of connecting blades 60 are inserted into the hook grooves of the ceiling rosette SR and rotated in a predetermined direction, thereby electrically connecting the ceiling rosette SR and the lighting fixture 200 and supporting the lighting fixture 200 on the ceiling rosette SR.

[0055] With lighting fixture 200 attached to ceiling rosette SR, the protrusion amount of each adjuster 70 is increased so that it abuts against ceiling S. This allows lighting fixture 200 to be stably attached to ceiling S and ceiling rosette SR.

[0056] To remove lighting fixture 200 from ceiling rosette SR, first reduce the amount of protrusion of each adjuster 70. Next, while pushing in operating part 82 of locking mechanism 80, rotate lighting fixture 200 in the opposite direction to that used when it was attached. This releases the connection with ceiling rosette SR, allowing lighting fixture 200 to be removed.

[0057] [Effects of the embodiment] According to the lighting fixture mounting device 100 of this embodiment described above, by connecting the lighting fixture body 210 to the lighting fixture mounting device 100, the lighting fixture 200 can be directly mounted to the ceiling rosette SR arranged on the ceiling S.

[0058] Furthermore, with the lighting fixture mounting device 100 attached to the ceiling rosette SR, the lighting fixture mounting device 100 can be stabilized relative to the ceiling S and the ceiling rosette SR by adjusting the protrusion amount of the adjuster 70 and bringing it into contact with the ceiling S. This allows the lighting fixture 200 to be stably attached to the ceiling S.

[0059] [Variations] The lighting fixture mounting device according to the present invention described above is not limited to the present embodiment.

[0060] For example, the shapes of the various parts of the lighting fixture mounting device are not limited to those of the present embodiment. For example, in the present embodiment, the engaging portion 220 of the lighting fixture body 210 is a protrusion and the engaged portion 50 of the lighting fixture mounting device 100 is a step that engages with the protrusion, but the mechanism for connecting the lighting fixture body 210 and the lighting fixture mounting device 100 is not limited to this. For example, the engaged portion 50 of the lighting fixture mounting device 100 may be a protrusion and the engaging portion 220 of the lighting fixture body 210 may be a step that engages with the protrusion. Furthermore, the lighting fixture body 210 and the lighting fixture mounting device 100 may be detachably connected by other configurations.

[0061] Blower 240 may be provided with a swing mechanism that changes the orientation of blades 243 so that the blowing direction can be changed. In this case, lighting fixture 200 is more likely to swing, but adjuster 70 allows lighting fixture 200 to be stably attached to ceiling S.

[0062] Although the embodiments of the present invention have been described above, the above-described embodiments are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above-described embodiments, and can be carried out by appropriately modifying the above-described embodiments within the scope of the present invention. [Explanation of symbols]

[0063] 100 Lighting fixture mounting device 200 lighting fixtures 10 Mounting device body 20 Outer member 21 Outer wall 22 Outer top section 25 Mounting surface 40 Inner member 41 Inner wall 42 Inner top section 43 Inner top opening 50 engaged portion 51 Groove 60 connecting blade 61 Mounting screws 62 terminals 63 Terminal screw 70 adjuster 71 Contact part 72 Support shaft 73 Nut 80 Locking mechanism 81 Locking Claw 82 Control section 210 Lighting fixture body 211 Side 212 Bottom 215 Lighting fixture side opening 220 Engagement part 230 Lighting Department 231 Ring Section 232 Arm 240 Blower 241 Drive unit 242 Drive shaft 243 Wing 250 Power supply AR Containment Space S ceiling SR ceiling rosette

Claims

1. A lighting fixture mounting device for mounting a lighting fixture to a ceiling rosette arranged on a ceiling, An attachment device body having an attachment surface that becomes an upper surface when attached to the ceiling rosette; a pair of connecting blades provided on the mounting surface; a plurality of adjusters disposed on the mounting surface closer to the outer edge than the pair of connecting blades, the adjusters being capable of adjusting the amount of protrusion so as to abut against the ceiling when the ceiling rosette is attached; Equipped with an engaging portion that engages with an engaging portion provided on the lighting fixture body is provided on a side portion of the mounting device body so as to be detachably connected to the lighting fixture body of the lighting fixture; Lighting fixture mounting device.

2. The lighting fixture body has a lighting fixture side opening formed at an upper portion thereof, By connecting the light source unit to close the lighting fixture side opening, a storage space is formed inside the lighting fixture body. The lighting fixture mounting device of claim 1 .

3. The mounting device body is an outer member having an outer wall that is arranged to be flush with a side surface of the lighting fixture body when connected to the lighting fixture body, and an outer top surface portion that is provided on an upper portion of the outer wall and forms the mounting surface; an inner member including an inner wall disposed inside the outer wall and on which the engaged portion is provided, and an inner top surface portion provided on an upper portion of the inner wall and disposed at a distance from the outer top surface portion; The lighting fixture mounting device according to claim 2 , further comprising:

4. The adjuster is a contact portion that contacts the ceiling; a support shaft on an upper end of which the abutment portion is disposed and which adjusts the amount of protrusion of the abutment portion relative to the mounting device main body, The support shaft is screwed into the mounting device body, and a lower end side thereof passes through the outer member and the inner member and protrudes into the accommodation space. The lighting fixture mounting device according to claim 3 .

5. a pair of terminals disposed on the underside of the outer top surface portion, electrically connected to the pair of connecting blades, and adapted to supply power to the lighting fixture body; an inner top surface opening formed in the inner top surface portion, The inner top surface opening is a work opening through which wiring to be connected to the pair of terminals is inserted and through which the wiring is connected to the pair of terminals; The lighting fixture mounting device according to claim 4.

6. a locking mechanism is disposed between the outer top surface portion and the inner top surface portion, The operating portion of the locking mechanism is provided so as to protrude outward from the outer wall. The lighting fixture mounting device according to claim 5.

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