JP2000030523A - Device for fitting ceiling surface mounted luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire fitting device capable of easily removing a luminaire body by use of both thumbs, with the luminaire body held by both hands. SOLUTION: Extension parts 30a and 30b are formed at the rear parts of right and left engagement members 12a and 12b in such a state as extended backward from each one side of the members 12a and 12b, with the rear ends bulged toward a center, and disengagement projection pieces 15a and 15b are respectively formed on the extension parts 30a and 30b for moving each of engagement pawls 13a, 14a, 13b and 14b to such a state as sunk from both sides of an adapter 4 against the forces of energizing springs 35a and 35b. In this case, the disengagement projection piece 15a of the left engagement member 12a is positioned on the right side of the center of the adapter 4, while the disengagement projection piece 15b on the left side of the center of the adapter 4. In addition, the disengagement projection pieces 15a and 15b are respectively exposed to the lower surface of the adapter 4, so as to be opposite to the slide directions of the right and left engagement members 12a and 12b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a state in which left and right locking members provided slidably in a radial direction and locking claws of the left and right locking members are projected from both sides of an adapter base. The present invention relates to a ceiling-mounted lighting fixture mounting device including an adapter having a biasing biasing spring and a lighting fixture main body having a locking receiving portion with which each locking claw of the adapter is detachably engaged.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 9-92020 discloses a left and right locking member having a plug blade to be hooked on a hooking ceiling on an upper surface of an adapter base and provided slidably in a radial direction of the adapter base. An adapter having biasing springs for biasing the locking claws of the left and right locking members so as to protrude from both sides of the adapter base, and locking in which the locking claws of the adapter are detachably engaged; A ceiling-mounted lighting fixture mounting apparatus including a spacer having a receiving portion is described.

In this device, a locking member having a locking claw removably engaged with a locking receiving portion of a spacer engaged with the adapter is slidable to the right and left in the radial direction of the adapter base. And the left and right locking claws are provided so as to be able to protrude and retract from both sides of the adapter base, respectively, and are biased so that the locking claws protrude from the side of the adapter base against the rear portions of the left and right locking members. Release projections that slide the respective left and right locking claws in a state of being immersed from the peripheral surface of the adapter base against the bias of the biasing springs. And exposed at the lower surface of the adapter.

In this lighting fixture mounting apparatus, the left and right locking claws are slid toward the inside in the radial direction (toward the center) in a state where the lock lever is in the unlocked position, so that the left and right locking claws are slid. It can be immersed from the peripheral surface of the adapter base, and the spacer fixed to the instrument body can be engaged with and disengaged from the adapter, so that the instrument body can be attached and detached.

[0005] However, since the sliding operation direction of the left and right release projections exposed on the lower surface of the adapter is radially inward when removing the instrument body, the left and right release projections are used with one hand. As a result of holding the left and right locking claws immersed from the peripheral surface of the adapter base by sliding the piece inward in the radial direction, the instrument body must be supported only with the other hand, and the instrument is held with one hand. There was a feeling of instability receiving the body.

[0006]

SUMMARY OF THE INVENTION A first object of the present invention is to release the left and right locking claws while supporting the lighting fixture body with both hands when removing the lighting fixture body from the adapter. It is an object of the present invention to provide a ceiling-mounted lighting fixture mounting device that can be easily used with both thumbs.

A second object of the present invention is to provide a ceiling-mounted lighting fixture mounting apparatus which can prevent the lighting fixture main body from falling.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a ceiling-mounted lighting fixture mounting apparatus according to the present invention has a plug blade hooked on a hooking ceiling on an upper surface of an adapter base.
Left and right locking members slidably provided in the radial direction of the adapter base, and biasing springs for biasing the locking claws of the left and right locking members so as to protrude from both sides of the adapter base. And a lighting fixture main body having a locking receiving portion with which each locking claw of the adapter is detachably engaged. A locking claw is formed, and an extension portion is formed at a rear portion of the left and right locking members, which extends rearward from one side and further extends toward the center at a rear end, and extends each of the locking members. A release projection for moving each of the locking claws from both sides of the adapter base to a state of being immersed against the bias of the biasing spring, and releasing the left locking member. The projecting piece is on the right side of the center of the adapter, and the release projecting piece of the right locking member The adapter is disposed on the left side of the center of the adapter, and is disposed so as to oppose each other in the sliding direction of the left and right locking members, and the release protrusions of the left and right locking members are exposed on the lower surface of the adapter. It is characterized by the following.

[0009] According to a second aspect of the present invention, there is provided a lighting fixture mounting apparatus according to the first aspect, wherein a hook is provided on a lower surface of the adapter, and the hook is provided on the lighting fixture body. And a hook part for preventing the fall which engages with the hook is provided.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of a ceiling-mounted lighting fixture mounting apparatus (hereinafter, referred to as a lighting fixture mounting apparatus) of the present invention. Lighting fixture 1
Is an adapter 4 having a pair of blades 3 and 3 (only one of which is shown) hooked on the hooking ceiling 2 on the upper surface.
And a lighting fixture main body 5 which is detachably fitted and locked to the adapter 4.

The hooking ceiling 2 is a conventionally known one which is attached to the ceiling surface 6, and is provided on a lower surface of a sealing base 7 with a pair of arc-shaped plug blade insertion openings 8 around the center.
Each of the blade insertion openings 8 has a wide portion 9 formed at a start end in a counterclockwise rotation direction, and a narrow portion 10 is formed continuously with the wide portion 9 to an end. Further, a blade receiving portion (not shown) is provided on the inner back surface of the narrow portion 10, 10 of each blade insertion slot 8, 8, and the blade receiving portion is connected to the indoor wiring. A conductive connection terminal plate (not shown) is provided.

FIG. 2 is an enlarged perspective view showing a part of the adapter 4 and a part of the lighting fixture main body 5. As shown in FIG. 2, the adapter 4 has a substantially cylindrical shape, and a pair of blades 3, 3 (only one is shown) are arranged on the upper surface of the adapter 4 so as to face each other on the same circumference. A lock claw (not shown) for preventing rotation of the adapter 4 in the removing direction (counterclockwise rotation) is provided so as to be freely protrudable and retractable on the same circumference as the blades 3 and 3. It is arranged on the upstream side of one of the blades 3 and 3 in the removing and rotating direction. The structure and operation for allowing the lock claw to protrude and retract from the upper surface of the adapter 4 are described in, for example, JP-A-9-9.
Since it is publicly known as disclosed in No. 2021, detailed description is omitted.

The peripheral surface of the side of the adapter 4 has an adapter 4
Upper and lower two-stage locking claws 13a, 14 detachably engaged with a locking receiving portion (not shown) of the lighting fixture body 5 which engages with the locking claw 13a, 14
a and 13b, 14b are respectively disposed so as to be able to protrude and retract in the left and right directions in the radial direction (the locking claws 13a are not shown).
A lock release button 50 is provided at a position substantially 90 degrees between the lock claws 13a and 14b and the lock claws 13b and 14b. The left and right locking claws 13a, 14a and the locking claws 13b, 14b are connected to left and right locking members 12a, 1 described later.
2b are integrally formed in the front part.

On the lower surface of the adapter 4 are left upper locking claws 13a and lower locking claws 14a and right upper locking claws 13a.
Release protrusions 15a and 15b which are respectively slid outwardly in the radial direction in order to immerse the b and the lower locking claw 14b into the peripheral surface of the adapter 4 are provided to face each other. The left and right release projections 15a, 15b are integrally formed on the lower surfaces of left and right locking members 12a, 12b, respectively, which will be described later.

As shown in FIG. 2, the adapter 4 has an adapter base 16 and a closing plate 17 mounted on the lower surface of the adapter base 16. The adapter base 16 is
A circular upper wall 18 forming the upper surface of the adapter 4 (FIG. 4)
And a peripheral wall 19 that forms the side peripheral surface of the adapter 4 along the peripheral edge of the upper wall 18.

FIG. 3 is a bottom view of the adapter 4 with the closing plate 17 removed, and FIG. 4 is a sectional view of the adapter 4. As shown in FIG. 3 and FIG.
The left and right locking members 14a,
Storage portions 20a, 20 each formed of a concave groove for storing 14b.
0b are provided in the radial direction, and storage portions 20, 2 are provided on the left and right sides of the peripheral wall 19 of the adapter base 16.
Claw doorway 2 cut into rectangular shape communicating with 0
1 and 21 are provided respectively.

On the rear surface of the adapter base 16, a closing plate 1 for closing the lower side of the adapter base 17 at a plurality of locations near the periphery.
7 for attaching columnar projections 22, 22, 22, 22
Are provided, and screw holes 23 are provided on the end faces of the respective columnar projections 22.

As shown in FIG. 3, a left locking member 12a is provided in the storage portions 20a and 20b on the rear surface of the adapter base 16.
The right and left locking members 12b are disposed with their upper locking claws 13 and lower locking claws 14 facing outward, respectively, and both sides of the left and right locking members 12a and 12
The adapter 4 is guided by the side walls 24, 24, 24, 24, respectively, and is slidably provided on the right and left in the radial direction of the adapter 4.

FIG. 5 is a perspective view of the left and right locking members.
The left locking member 12a has upper and lower 2
The upper locking claw 13a and the lower locking claw 14a of the step are formed respectively, and the right locking member 12b is similarly formed on the front part of the upper locking claw 13b and the lower locking of the upper and lower two steps of an arc convex shape in plan view. Claws 14b are formed respectively. Each of the upper locking claws 13a and 13b of the left and right locking members 12a and 12b is formed in an arc convex shape in plan view, and has a tapered portion 25 provided on the lower surface as shown in FIG. Is provided with a flat locking step 26. Similarly, the lower locking claws 14a, 14b of the left and right locking members 12a, 12b also
In a plan view, it is formed in an arc convex shape, a tapered portion 27 is provided on a lower surface, and a flat locking step portion 28 is provided on an upper surface.

As shown in FIGS. 3 to 5, the lower surface of the main body 120a of the left locking member 12a disposed in the left storage portion 20a and the right locking member 1 disposed in the right storage portion 20b.
Extension members 30a and 30b are attached to the lower surface of the main body 120b of the 2b by screws 29, respectively.

As shown in FIG. 5, each extension member 30a, 3
0b is a main body rear portion 12 of the left and right locking members 12a, 12b.
0a, 120b have extensions 31a, 31b extending rearward from one side and extending rearward toward the center, respectively, and the tips of the extensions 31a, 31b are bent downward. The protrusions 32a and 32b are formed. The release knobs 33a and 33b are fitted into the protrusions 32a and 32b, respectively.
a and 15b are configured.

As shown in FIG. 4 and FIG. 5, spring insertion grooves 34a, 34b, which communicate with the rear ends of the main bodies 120a, 120b, respectively, are provided at the center of the upper surfaces of the main bodies 120a, 120b of the left and right locking members 12a, 12b. 34b is provided,
The biasing springs 35a and 35b made of coil springs are inserted into the spring insertion grooves 34a and 34b, respectively.

One end of each of the biasing springs 35a and 35b is in contact with the end walls 36a and 36b of the spring insertion grooves 34a and 34b, and the other ends of the biasing springs 35a and 35b are connected to the left and right storage sections 20a and 20b. Positioning dowels 38a, protruding from the inner walls 37a, 37b on the center side of the adapter 4 constituting
38b are extrapolated and positioned (FIG. 4).
reference).

As shown in FIG. 3, the left locking member 12a is disposed in the left storage portion 20a and the right locking member 12b
Is disposed in the right storage section 20b, the left locking member 12a
The extension portion 31a of the extension member 30a provided on the right side and the extension portion 31b of the extension member 30b provided on the right engagement member 12b are alternately arranged in the front-rear direction orthogonal to the left-right direction. The protruding piece 15a is disposed on the right side of the center of the adapter 4 and the release protruding piece 15b of the right locking member 12b is disposed on the left side of the center of the adapter 4, and the sliding direction of the left and right locking members 12a, 12b. Are arranged facing each other.

As shown in FIG. 3, a power supply connector 39 is provided near the periphery of the rear surface of the adapter base 16. The power supply connector 39 is electrically connected to the pair of blades 3 and 3 provided on the upper surface of the adapter 4, and is connected to the connection connector 40 of the lighting fixture body 5 shown in FIG.
Connection and disconnection are possible.

The closing plate 1 for closing the lower side of the adapter base 16
Reference numeral 7 denotes a metal circular plate having substantially the same diameter as the adapter base 16 and is screwed so as to close the lower side of the adapter base 16. As shown in FIG. 2, the left and right locking members 12a, 12b are located at positions substantially corresponding to the release projections 15a, 15b provided on the left and right locking members 12a, 12b, respectively. The substantially rectangular through holes 41a and 41b for restricting the radial sliding range of the 12b are provided to face each other. Near the periphery of the closing plate 17, an arched earring is provided at a position substantially lateral to one of the through holes. Hanging part 42 by processing
The connector through-hole 43 is provided at a position substantially 90 degrees from the center with respect to the left and right rectangular through-holes 41a and 41b.

The left and right locking members 12a and 12b are
The lower surface is supported by the closing plate 17 and housed in the housing portions 20a and 20b of the adapter base 16, respectively, and the release protruding pieces 15a and 15b provided on the left and right locking members 12a and 12b have left and right rectangular shapes. Through holes 41a, 41
b and protrudes from the lower surface of the adapter 4 through the lower surface of the adapter 4 and is urged toward both outer sides in the radial direction of the adapter 4 by urging springs 35a and 35b. Release projection piece 15 provided
a, 15b are left and right rectangular through holes 41a and 4
It is regulated by contacting each inner edge of 1b.

As a result, in the normal state, the left locking member 12
a and the locking claws 13b, 14b of the right locking member 12b are connected to the peripheral wall 19 of the adapter base 16.
Are provided so as to protrude from the left and right claw entrances 21a and 21b provided on the left side, respectively, and the release protrusion 15a provided on the left locking member 12a is provided on the right side of the center of the adapter 4 and on the right locking member 12b. The release projection 15b is the adapter 4
Are disposed on the left side of the center of the adapter 4, and are disposed facing the sliding direction (left-right direction), and are exposed on the lower surface of the adapter 4 (see FIGS. 2 to 4).

The left and right locking members 12a and 12b are
Each of the storage portions 20 is opposed to the urging of the urging springs 35a and 35b.
The inside of 20b is slidable to the outside in the radial direction of the adapter 4, and the base end of the right release projection 15a contacts the outer edge of the rectangular through hole 41a provided in the closing plate 17, and
In the position where the base end of the left release projection 15b abuts and is regulated by the outer edge of the rectangular through hole 41b provided in the closing plate 17, the respective locking members 12a, 12b are locked. Nail 1
3a, 14a, 13b, and 14b are respectively immersed in the left and right nail entrances 21a and 21b provided on the peripheral wall 19 of the adapter base 16 (see FIG. 6).

FIG. 7 is a sectional view of a main part of the lighting fixture body. The luminaire main body 5 is provided with a light source (not shown), and as shown in FIG.
The power supply via 4 is supplied to the light source.

As shown in FIG. 1, a circular through hole 46 slightly larger than the diameter of the adapter base 17 for inserting the adapter 4 is formed in the center of the top plate 45 of the lighting fixture body 5. As shown in FIG. 7, a curling portion 47 is formed on the upper surface of the top plate 45 around the entire periphery of the through hole 46. The locking receiving portion of the lighting fixture body 5 that engages with the adapter 4 is formed by the entire periphery of the circular through hole 46 on the lower surface of the top plate 45.

Further, one end of a string 48 is attached to the lower surface of the top plate 45 of the lighting apparatus main body 5 by screwing to the side of the through hole 46, and a hook part 4 for drop prevention is attached to the tip of the string 48.
9 are provided. In addition, the hook part 49 is the adapter 4
It is intended to prevent the lighting fixture main body 5 from dropping by being hooked on a hook portion 42 provided on the lower surface of the lighting device.

The luminaire is mounted as follows. The attachment and detachment of the adapter 4 to and from the hooking ceiling 2 are described in, for example, JP-A-8-111111 and
Since it is the same as the lighting fixture mounting device disclosed in No. 92020, description thereof will be omitted. By attaching the adapter 4 to the hooking ceiling 2, it is also electrically connected to the power connector 39 through the blades 3.

The attachment of the lighting fixture body 5 to the adapter 4 is performed as follows. FIG. 8 is a cross-sectional view of a main part showing a mounting state of the lighting fixture main body 5 in the case of an embedded ceiling, and FIG. 9 is a cross-sectional view of a main part showing a mounting state of the lighting fixture main body 5 in a case of an exposed ceiling. is there. As shown in FIG. 1, the adapter 4 is aligned with the circular through hole 46 provided in the top plate 45 of the lighting fixture main body 5, and the lighting fixture main body 5 is pushed up.

When the adapter 4 is inserted into the circular through hole 46 of the luminaire body 5, the tapered portions 27, 27 formed on the lower surfaces of the left and right lower locking claws 14a, 14b of the adapter 4.
Is guided in contact with the periphery of the through hole 46 of the lighting fixture body 5, and as the lighting fixture body 5 is pushed up, the tapered portion 2
The right and left locking members 12a and 12b are pushed inward of the adapter 4 against the urging of the urging springs 35a and 35b of the adapter 4 shown in FIG. The upper and lower locking claws 13a and 14a of the left locking member 12a slide and retract into the storage portions 20a and 20b, respectively.
And the upper locking claw 13b and the lower locking claw 14b of the right locking member 12b enter the claw entrances 21a and 21b, respectively.
The adapter 4 is inserted into the through hole 46 of the lighting fixture body 5.

The lighting fixture body 5 is provided with the lower locking claws 14a, 1
At the same time as it is pushed up to the position beyond the tip of 4b
The left and right locking members 12a and 12b of the adapter 4 are pushed radially outward by the return forces of the biasing springs 35a and 35b, respectively, and the upper locking claw 13a and the lower locking claw 14a of the left locking member 12a and the right locking claw 14a Upper locking claw 13 of locking member 12b
b and the lower locking claw 14b are projected from the left and right claw entrances 21a, 21b of the adapter 4, respectively, and the flat locking step portions 28, 28 of the lower locking claw 14a, 14b of the left and right locking members 12a, 12b. The circular through hole 4 of the lighting fixture body 5
6 is supported, and the lighting fixture body 5 is supported and attached to the adapter 4 (see FIG. 8).

Since the curling portion 47 is formed on the peripheral edge of the circular through hole 46 of the instrument main body 5, FIG.
At the same time, a rounded portion is formed at the edge of the through hole 46, and when the lighting fixture body 5 is pushed up, the rounded portion comes into contact with the tapered portions 28, 28 of the lower locking claws 14a, 14b, so that the mounting is smooth. Can be done.

After the lighting fixture body 5 is attached to the adapter 4, the power supply is connected to the connection connector 40 of the lighting fixture body 5.
Is exposed to the lower surface of the adapter 4 through the connector through hole 43 provided in the closing plate 17.
And connect.

Further, the hook 49 of the luminaire main body 5 is hooked and latched on the hook 42 provided on the lower surface of the adapter 4. Thereby, it is possible to prevent the lighting fixture main body 5 from being accidentally detached from the adapter 4 and falling.

When removing the lighting fixture body 5 from the adapter 4, first, the hook portion 49 is removed from the hook portion 42.
Next, the connection connector 40 of the lighting fixture body 5 is pulled out from the power supply connector 39. Next, with the lighting fixture main body 5 being supported by both hands, using the thumbs of both hands, the left and right release projecting pieces 15a,
15b is slid radially outward along the rectangular through-holes 41a and 41b, respectively.
12b presses and contracts the biasing springs 35a and 35b, respectively, and retreats into the left and right storage sections 20a and 20b, respectively.
Upper locking claw 13a and lower locking claw 1 of left locking member 12a
4a enters the claw entrance 21a, and the upper engagement claw 13b and the lower engagement claw 14b of the right engagement member 12b enter the claw entrance 21b. Left and right lower hooks 1
4a and 14b are disengaged and the instrument body 5 is
Get off. The above is the case where the hooking ceiling 2 is of an embedded type.

When the hooking ceiling 2 is an exposed type, as described above, the lighting fixture body 5 is connected to the upper and lower locking claws 14a and 14b of the adapter 4 as shown in FIG. The circular through holes 46 of the lighting fixture body 5 are provided in the portions 28, 28.
The lighting device main body 5 is further pushed up to raise the lighting device main body 5 from this state, and the left and right upper locking claws 13 of the adapter 4 are set.
a, 13b are pressed by the peripheral edge of the through hole 46, and the upper locking claw 13a and the lower locking claw 14a of the left Keishi member 12a and the upper locking claw 13 of the right locking member 12b are again pressed.
b and the lower locking claw 14b are connected to the left and right claw entrances 21a, 2a.
1b, the lighting fixture main body 5 is pushed up to a position beyond the tips of the left and right upper locking claws 13a, 13b, and the flat locking steps on the upper surfaces of the left and right upper locking claws 13a, 13b of the adapter 4 are raised. The peripheral edge of the circular through hole 46 of the appliance main body 5 is supported on the portions 26, 26 (see FIG. 9).

The locking steps 26, 26 of the upper locking claws 13a, 13b of the left and right locking members 12a, 12b and the locking steps 28, 28 of the lower locking claws 14a, 14b are both flat. Since the lighting device main body 5 can be slid in the circumferential direction of the adapter 4 in the engaged state since the lighting device main body 5 is engaged, the lighting device main body 5 can be rotated even after the lighting device main body 5 is attached, and can be fitted to the ceiling. The position of the lighting fixture can be arbitrarily determined.

As described above, when the lighting fixture body 5 is detached from the adapter 4 while the lighting fixture body 5 is supported by both hands, the left and right release projections 15a, 15b are used with the thumbs of both hands. The upper and lower locking claws 13a and 13b and the lower locking claw 1
Since the engagement state can be released by immersing the side surfaces of the adapters 4a and 14b, the release operation for removal can be easily performed using the thumbs of both hands. Since the lighting fixture main body 5 can be removed while supporting the lighting fixture main body 5 with both hands, it can be safely performed.

Further, the extension members 30a, 30b provided on the respective locking members 12a, 12b are arranged so as to be alternately arranged in front and rear of the sliding direction.
Since a storage portion required when the 2a and 12b slide can be secured, the size of the adapter 4 can be reduced.

[0045]

According to the lighting equipment mounting apparatus for directly mounting on a ceiling according to the present invention, an extending portion extending rearward from one side and extending rearward toward the center is provided at the rear portion of the left and right locking members. Formed on the extension of each locking member, forming a release projection for moving each locking claw from both sides of the adapter base into a state of being immersed against the bias of the biasing spring, The release projection of the left locking member is located on the right side of the center of the adapter, and the release projection of the right locking member is located on the left side of the center of the adapter, and oppose each other in the sliding direction of the left and right locking members. Since the release projections of the left and right locking members were exposed on the lower surface of the adapter, when removing the lighting fixture body from the adapter, hold the fixture body with both hands while holding the thumb with both hands. Using left and right release projections 15a, 1
By simply sliding the 5b outward in the radial direction, the left and right upper locking claws and lower locking claws can be immersed in the side of the adapter to release the engaged state. It can be removed easily while supporting the lighting fixture body with both hands, so it can be safely removed.

In addition, since the hook portion is provided on the lower surface of the adapter and the hook portion for preventing the fall which engages with the hook portion is provided on the lighting fixture body, the hook portion of the lighting fixture body is attached to the adapter. By hooking and locking the provided hooking portion, it is possible to prevent the lighting fixture main body from accidentally coming off the adapter and falling.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a ceiling-mounted lighting fixture mounting apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the adapter viewed from below.

FIG. 3 is a bottom view of the adapter with the blocking plate removed.

FIG. 4 is a sectional view of an adapter.

FIG. 5 is a perspective view of left and right locking members.

FIG. 6 is a bottom view of the adapter with the blocking plate removed (when the locking claw is immersed).

FIG. 7 is a sectional view of a main part of the lighting fixture main body.

FIG. 8 is a sectional view of an essential part showing a mounting state of a lighting fixture main body when the ceiling is an embedded type ceiling;

FIG. 9 is a cross-sectional view of a main part showing a mounting state of a lighting fixture main body in the case of an exposed ceiling.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lighting fixture mounting device 2 Hook ceiling 3 Plug blade 4 Adapter 5 Lighting fixture main body 6 Ceiling surface 7 Sealing base 8 Plug blade insertion opening 9 Wide part 10 Narrow part 11 Lock release button 12a Left locking member 12b Right locking member 13 Upper locking claw 14 Lower locking claw 15 Release projection 16 Adapter base 17 Closure plate 18 Upper wall 19 Peripheral wall 20 Storage section 21 Claw entrance 22 Column projection 23 Screw hole 24 Side wall 25 Tapered section 26 Locking step 27 Taper section 28 Locking stepped part 29 Screw 30 Extension member 31 Extension part 32 Projection piece 33 Knob member 34 Spring insertion groove 35 Energizing spring 36 End wall 37 Inner wall 38 Positioning dowel 39 Power supply connector 40 Connection connector 41 Through hole 42 Hook Part 43 Connector through hole 44 Connection cord 45 Top plate 46 Through hole 47 Curling part 48 String 49 Hook part 50 Lock release button

Claims (2)

[Claims] 1. A left and right locking member having a plug blade to be hooked on a hooking ceiling on an upper surface of an adapter base and slidably provided in a radial direction of the adapter base, and a locking claw of the left and right locking members. An illumination device body comprising: an adapter having an urging spring for urging the adapter base so as to protrude from both side portions of the adapter base, and a locking receiving portion in which each locking claw of the adapter is detachably engaged. The locking claws are formed in two steps vertically at the front of the left and right locking members, and extended rearward from one side to the rear of the left and right locking members, with the rear end at the center. An extending portion is formed to project toward each other, and each of the locking claws is immersed in the extending portion of each of the locking members from both side portions of the adapter base against the urging of the urging spring. Forming release projections for movement, the left locking member The release protrusion is disposed on the right side of the center of the adapter, and the release protrusion of the right locking member is disposed on the left side of the center of the adapter, and faces each other in the sliding direction of the left and right locking members. The lighting fixture mounting device directly mounted on the ceiling, wherein the release projections of the left and right locking members are respectively exposed on the lower surface of the adapter. 2. The lighting device body according to claim 1, wherein a hook is provided on a lower surface of the adapter, and a hook for preventing the hook from engaging with the hook is provided on the lighting fixture body. Ceiling-mounted lighting fixture mounting device.