JPH1131409A - Lower mounting adapter for ceiling surface-mounted luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lower mounting adapter that allows the thickness from the mounting surface for a luminaire body to the lower surface of a lower adapter base to be decreased as compared with a structure where both an upper and lower locking claws of a sliding member are contained in a lower adapter base. SOLUTION: An fitting hole 21, into which an upper adapter 4 is inserted, is formed in a lower adapter base 20; installed each on both inside surfaces of the fitting hole 21 are sliding members 25 facing to each other, each equipped with an upper locking claw 27 and a lower locking claw 28 in a form of an upper and lower steps, that are detachably engaged with an locking step 15 of the upper adapter 4; in addition, the upper locking claw 27 and the lower locking claw 28, which face to each other, are installed movably toward and away from the inside surface of the fitting hole 21. The upper locking claw 27 is placed protrusively higher than the upper surface of the lower adapter base 20 that is used as the mounting surface for a luminaire body 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device directly mounted on a ceiling for removably fitting and locking an apparatus body to an upper adapter mounted on a hooking ceiling fixed to a ceiling surface. The present invention relates to a lower adapter for mounting.

[0002]

2. Description of the Related Art Conventionally, there has been known a lighting fixture mounting device which has an upper adapter to be hooked on a hooking ceiling and detachably locks a lower adapter attached to a fixture body to the upper adapter.

For example, in the lighting fixture mounting apparatus described in Japanese Patent Application Laid-Open No. 8-111111, the upper adapter has a substantially disk shape, and has a pair of blades hooked on a hook ceiling on the upper surface of the upper adapter. The upper surface of the flange formed substantially all around the outer periphery of the upper adapter is a locking step.

Further, the lower adapter detachably fitted to and engaged with the upper adapter has a fitting hole for fitting the upper adapter into a lower adapter base attached to the instrument main body. Sliding members having upper and lower two-step upper and lower engaging claws removably engaged with the engaging step of the upper adapter are provided on the side surfaces, respectively, and are opposed to each other. Biasing springs are provided so that the upper locking claw and the lower locking claw that can be protruded and retracted with respect to the inner surface of the fitting hole, and bias the two locking claws to protrude from both inner surfaces of the fitting hole, respectively. A release knob is provided on each sliding member for retracting both locking claws from the inner surface of the fitting hole into a recessed state against the urging of the urging spring, and is provided on the lower surface of the lower adapter base. Exposed.

In this device, the lighting fixture is attached to the hooking ceiling by first attaching the upper adapter to the hooking ceiling attached to the ceiling surface, and then attaching the lower adapter attached to the fixture body to the upper adapter. .

For example, when the lower adapter is attached to the upper adapter mounted on the recessed ceiling which does not protrude much from the ceiling surface, the upper adapter is aligned with the fitting cylinder of the lower adapter, the instrument body is pushed up, and the fitting body is inserted into the fitting hole. After retreating the pair of upper locking claws facing each other, the lower surface of the upper locking claw of the lower adapter is supported by the locking step on the upper surface of the flange portion of the upper adapter.

[0007] The lower adapter is attached to the upper adapter mounted on the exposed type ceiling which protrudes greatly from the ceiling surface, as described above, by first attaching the lower adapter to the locking step on the upper surface of the flange portion of the upper adapter. With the lower surface of the upper locking claw supported, the instrument body side is further pushed up,
After retreating the pair of lower locking claws again, the lower surface of the lower locking claw of the lower adapter is supported by the locking step on the upper surface of the flange portion of the upper adapter.

In this apparatus, whether the hooking ceiling is of the embedded type or of the exposed type, the locking support portion of the lower adapter with respect to the locking step of the upper adapter is changed in the vertical direction. The device main body can be attached to the hooking ceiling.

However, since this structure has a structure in which both the upper locking claw and the lower locking claw of the sliding member are built in the lower adapter base, the upper locking claw and the lower locking claw are provided on the upper surface of the lower adapter base which is a mounting surface with the instrument body. The height from the provided mounting plate to the lower surface of the lower adapter base (the thickness of the lower adapter) increases, and depending on the type of lighting equipment, for example, there is a case where mounting is not possible with a straight tube type lighting equipment. .

[0010]

SUMMARY OF THE INVENTION It is an object of the present invention to mount the device to the instrument body in comparison with a structure in which both upper and lower locking claws of a sliding member are built in a lower adapter base. An object of the present invention is to provide a lower adapter for mounting a lighting device directly mounted on a ceiling, which makes it possible to reduce a thickness between a surface and a lower surface of a lower adapter base.

[0011]

According to the first aspect of the present invention, there is provided a lower adapter for mounting a lighting device directly mounted on a ceiling, wherein a fitting hole for fitting the upper adapter is provided in a lower adapter base provided on a device body side. A sliding member having upper and lower two-step upper and lower locking claws, which are detachably engaged with the locking step portions of the upper adapter, opposing each other on both inner side surfaces of the fitting hole, respectively. The upper and lower locking claws facing each other are provided so as to be able to protrude and retract from the inner surface of the fitting hole, and both locking claws are projected from the inner surface of the fitting hole. A biasing spring is provided to bias each of the locking claws, and the release knobs for retracting the locking claws from the inner surface of the fitting hole into a state of being retracted from the inner surface of the fitting hole against the biasing of the biasing spring are provided in the respective sliding positions. And provided on the lower surface of the lower adapter base and provided on the member. To solve the problem, is characterized in that a said upper anchor claws than the lower adapter base of the upper surface of the mounting surface of the fixture body to protrude upward.

A lower adapter for mounting a ceiling-mounted lighting device according to claim 2 is the same as in claim 1, wherein the lower adapter base is provided on the upper surface of the lower adapter base and on both sides of the upper surface in the moving direction of each sliding member. On the other hand, a retaining plate for retaining is arranged, and small projections which are in sliding contact with the retaining plate are provided on both side edges of the upper surface of the sliding member.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a ceiling-mounted lighting fixture mounting apparatus 1 to which a lower adapter according to the present invention is applied. The mounting device 1 is generally composed of a pair of blades 3 and 3 hooked on a hooking ceiling 2 fixed to a ceiling surface 7.
Is formed on the upper adapter 4 having an upper surface and a lower adapter 5 which is detachably attached to the upper adapter 4. The lower adapter 5 is attached to the appliance main body 6, and the appliance main body 6 is attached to the upper adapter 4 by locking the lower adapter 5 with respect to the upper adapter 4 attached to the hooking ceiling 2. .

The hooking ceiling 2 is of a conventionally known type. A pair of arcuate blade insertion holes 9 are provided on the lower surface of a rectangular parallelepiped sealing base 8 around the center thereof. , 9 are wide portions 1 at the start end in the clockwise rotation direction when the hooking ceiling 2 is viewed from below.
0, 10 are formed, and narrow portions 11, 11 are formed continuously from the start end to the end. Further, a blade receiving portion (not shown) is provided on the inner back surface of the narrow portion 11, 11 of each blade insertion port 9, 9, and connected to the indoor wiring at the blade receiving portion. Conductive connection terminal plate (not shown)
Are arranged.

The upper adapter 4 is disclosed in, for example,
The upper adapter 4 is formed in a substantially cylindrical shape, and has a key-shaped tip inserted into the blade insertion port 9 of the hooking ceiling 2 on the upper surface thereof. A pair of blades 3 and 3 are protruded, and the blade 3
3 is formed integrally with a terminal plate (not shown) disposed inside the upper adapter 4. And this plug blade 3
, The wide portion 10 of the blade insertion port 9, 9 of the hooking ceiling 2,
When the upper adapter 4 is rotated after being inserted into the blade 10, the blades 3, 3 move along the narrow portions 11, 11 of the blade insertion holes 9, 9, and the connection terminals of the hooking ceiling 2 and the upper adapter 4 are moved. Are electrically and mechanically connected to each other, and the upper adapter 4 is attached to the hooking ceiling 2.

A cord 12 connected to the terminal plate 3 extends from the lower surface of the upper adapter 4 and, as shown in FIG.
3 are attached.

Further, a circular flange portion 14 is formed at the lower portion of the outer peripheral surface of the upper adapter 4 and the circular flange portion 1 is formed.
A flat locking step 15 is formed on the upper surface of the outer peripheral surface 4 over the entire length in the circumferential direction, and a lock release button 16 for releasing the lock between the connection terminal of the hooking ceiling 2 and the terminal plate 3 on a part of the outer peripheral surface. When the lock release button 16 is depressed and the upper adapter 4 is rotated, the pair of blades 3, 3 reach the wide portions 10, 10 of the blade insertion holes 9, 9, and the upper adapter 4 is hooked to the ceiling 2 It can be removed from.

The instrument body 6 is provided with a light source (not shown). As shown in FIG. 1, the instrument body 6 is provided with a cord 17 connected to the light source. A connection connector 18 detachably engaged with the connector 13 is provided. Further, a through hole (not shown) for inserting the upper adapter 4 is formed in the center of the top plate 19 of the instrument body 6, and the lower adapter 5 is attached so as to match the through hole. I have.

As shown in FIG. 1, the lower adapter 5 has a lower adapter base 20 mounted on the lower surface of the top plate 19 of the instrument body 6.
A circular cylindrical fitting hole 21 corresponding to the through hole formed in the center of the top plate 19 is provided.

FIG. 2 is a plan view of the lower adapter 5, and FIG.
4 is a bottom view of the lower adapter 5, FIG. 4 is a cross-sectional view of a main part of the lower adapter 5 showing a mounting state with respect to the instrument body 6, and FIG. 5 is an enlarged cross-sectional view of a main part of FIG. .

As shown in FIG. 2 to FIG. 4, the lower adapter base 20 has projecting portions 22, 22 extending to the left and right sides to face each other with the fitting hole 21 of the lower adapter 5 interposed therebetween. As shown in FIG. 4, hollow storage portions 23, 23 formed inside the overhang portions 22, 22 are provided inside the overhang portions 22, 22, respectively, as shown in FIG. 4. On the inner side surface of the fitting hole 21 in the left-right direction, there are provided claw entrances 24, 24 which are open to communicate with the left and right storage portions 23, 23.

The storage portion 2 inside the left and right overhanging portions 22, 22
Sliding members 25, 25 are disposed on the members 3, 23, respectively.
The left and right sliding members 25, 25 are provided at the front part facing the fitting hole 21 with upper and lower two-stage upper locking claws 27 and a lower engaging member which are detachably engaged with the locking step 15 of the upper adapter 4. A stop claw 28 is provided, and upper and lower locking claws 27 and 27 and lower locking claws 28 and 28 facing each other are provided to be able to protrude and retract from the inner side surface of the fitting hole 21. A release knob 29 is integrally provided on the lower surface of the sliding member 25 so as to protrude therefrom. The sliding member 25 is provided in the storage section 23 via an inner plate 50 for reinforcement described later. In FIG. 5, only one of the sliding members 25 is shown.

As shown in FIG. 5, the left and right storage sections 23, 2
Spring storage recesses 31 are provided inside the outer walls 30 forming the outer edge of the spring storage recess 3, respectively.
Left and right upper locking pawls 3 are respectively provided between left and right pawl entrances 24, 24 provided on the inner side surface of the center fitting hole 21 of the lower adapter base 20, between the first and third sliding members 25 and the rear end of the sliding member 25.
8 and urging springs 32 for urging the lower locking claws 39 in a protruding state are provided, respectively. Further, rectangular guide holes 33, 33 for communicating the storage portions 23, 23 with the outside are provided on the lower surfaces of the left and right storage portions 23, 23, respectively.

FIG. 6 is an exploded perspective view of the sliding member 25. The sliding member 25 includes a locking claw main body 26 and a lower reinforcing plate 34.
And an upper reinforcing member 35. The locking claw main body 26 of the sliding member 25 is provided with a lower locking claw 28 having an arcuate concave shape in a plan view at a front portion of a base portion 36 thereof, and a base portion 36 is provided substantially at the center of a front portion of an upper surface of the base portion 36. Are formed integrally with each other, and an upper locking claw 27 having a circular arc shape in a plan view is provided at a front portion of the projection 37 above the lower locking claw 28. The width of the stop claw 27 is formed smaller than the width of the lower locking claw 28.

A rectangular insertion hole 38 having a width slightly smaller than the width of the upper locking claw 27 is provided between the upper locking claw 27 and the lower locking claw 28 in the front-rear direction. On both side edges of the upper surface, small small protrusions 39,
Are provided respectively. Also, the release knob 29
Is protruded downward substantially at the center of the lower surface of the base portion 36.

The upper locking claw 27 has a tapered portion 40 formed on the upper surface and a locking portion 41 formed flat on the lower surface. Similarly, the lower locking claw 28 has a tapered portion 42 on the upper surface and a locking portion 43 formed flat on the lower surface.

The lower reinforcing plate 34 is a metal plate having the same shape as the lower surface of the base 36 of the locking claw main body 26, and has a through hole 44 at a position corresponding to the release knob 29. The release knob 44 of the locking claw body 26 is passed through the through hole 44 of the lower reinforcing plate 34, and the lower reinforcing plate 34 is closely arranged on the lower surface of the base portion 36. Reinforce the lower side.

The upper reinforcing member 35 is formed by bending a metal plate-like body, and bending the lower end of the substantially central vertical portion 45 rearward to form a mounting plate portion 46. An insertion plate portion 47 is formed by bending the upper end toward the front, and a mounting hole 48 is provided substantially at the center of the mounting plate portion 46, and a front edge of the insertion plate portion 47 has an upper locking claw. It is cut into an arcuate concave shape in plan view so as to match the shape of 27.

The insertion plate portion 47 of the upper reinforcing member 35 is inserted into the insertion hole 38 of the locking claw main body 26 from the rear side, and is closely arranged below the flat locking portion 41 of the upper locking claw 27, The lower side of the flat locking portion 41 of the upper locking claw 27 is reinforced. The upper reinforcing member 35 is provided with a tapping screw 49 from above in the mounting hole 4.
8 and screwed to the rear of the upper surface of the base 36 of the locking claw body 26.

FIG. 7 is an exploded perspective view for explaining the assembly of the sliding member 25 to the lower adapter base 20. In FIG. 7, an inner plate 50 for reinforcement is disposed in the storage portion 23 of the lower adapter base 20 (not shown). The inner plate 50 is formed by bending a metal plate-like body, and bending both side ends of a base plate portion 51 disposed on the bottom surface of the storage portion 23 upward, respectively, to form left and right side plate portions 52, 52 are formed, and left and right side plate portions 52, 52 are formed.
The left and right support plates 53 are formed by bending each upper edge of the lower adapter base outwardly in the left-right direction.
A rectangular through hole 54 is provided so as to correspond to the guide hole 33 provided in communication with the lower surface of the left and right support plates 53, 53.
Support holes 55 are provided, respectively. Although not shown, the inner plate 50 is supported by the lower adapter base 20 via the support holes 55 of the left and right support plate portions 53, 53, and the through hole 54 is
3 and is arranged in the storage section 23 of the lower adapter base 20.

The sliding member 25 passes through the release knob 29 through the through hole 54 of the inner plate 50 and the guide hole 33 of the lower adapter base 20 from above to expose the distal end of the release knob 20 to the lower surface of the lower adapter 5. The two side surfaces of the sliding member 25 are guided and arranged on both side plate portions 52, 52 of the inner plate 50, and the moving direction of each sliding member 25, 25 is placed on the upper surface of the lower adapter base 20, as shown in FIG. A retaining plate 56 disposed on both sides of the upper surface of the cover prevents it from coming off.

As shown in FIG. 7, the holding plate 56 is a metal plate, and has a rectangular notch 57 having a width slightly larger than the width of the upper locking claw 27 at the center front. On the left and right sides of the notch 57, holding plate mounting holes 58, 58 are provided, respectively. A mounting hole 59 for the lower adapter 5 is provided near the left edge of the holding plate 56 in FIG.

As shown in FIG. 2, the holding plate 56 has base portions of the left and right sliding members 25, 25 arranged in the rectangular notch 57 so as to sandwich the center fitting hole 21 of the lower adapter 5. A projecting portion 37 projecting from the upper surface of the holding plate 36 is disposed, and the tapping screws 60, 60 are pressed from above into the holding plate mounting holes 5.
8 and 58, screws are attached to the left and right sides of the upper surface of the lower adapter base 20, respectively.

As shown in FIG. 2, each of the mounting holes 5 of the left and right holding plates 56, 56 exposed on the upper surface of the lower adapter 5.
Reference numerals 9 and 59 are used when attaching the lower adapter 5 to the device main body 6 when screws are screwed from the upper surface side of the top plate 19 of the device main body 6 to the upper surface side of the lower adapter 5.

As shown in FIG. 5, the sliding members 25, 25
Is a lower adapter base 20 which is a mounting surface with the instrument body 6.
The upper locking claws 27, 27 are arranged so as to protrude upward from the upper surface of the. As a result, compared to the conventional sliding member in which both the upper locking claw and the lower locking claw are built in the lower adapter base, the mounting surface with the instrument body 6 and the lower surface of the lower adapter base 20 are smaller. Can be reduced, and can be attached to, for example, a straight tube lighting fixture.

Further, retaining plates 56, 56 attached to the upper surface of the lower adapter base 20 for retaining are provided on each sliding member 2.
Small projections 39, 39 arranged on both sides of the upper surface of the base 36 of the sliding members 25, 25 are provided on the both sides of the upper surface in the moving direction of the sliding members 25, 25, and the notches 57, 57 of the holding plates 56, 56.
Contact the back surface of the left and right inner parts facing both sides of the.

The left and right sliding members 25, 25
2, 32, the lower adapter base 20 is urged toward the center fitting hole 21, and the release knobs 29, 29 provided integrally on the lower surfaces of the sliding members 25, 25 have the base ends of the left and right. The guide holes 33 are restricted by being brought into contact with the respective inner edges thereof.
7 and the lower locking claws 28, 28 are projected from the left and right claw entrances 24, 24 toward the fitting hole 21 in the horizontal direction.

Further, the left and right sliding members 25, 25 are moved to the left and right sides by releasing the release knobs 29, 29, respectively, so that the left and right upper locking claws 38 and the lower locking claws 3 are moved.
9 slides outwardly against the urging forces of the urging springs 47, 47. As a result, the upper locking claws 27, 27 and the lower locking claws 28, 28 move the left and right claw entrances 24 in the horizontal direction. ,
Retreat outside of 24.

As shown in FIG. 3, two mounting holes 61 are provided on the lower surface of the lower adapter base 20. The mounting holes 61 are provided in the lower adapter 5.
This is used when attaching to the apparatus main body 6 by using a screw from the lower side of the lower adapter 5 and screwing it to the lower side of the top plate 19 of the apparatus main body 6.

Next, attachment and detachment of the instrument body 6 with respect to the upper adapter 4 attached to the hooking ceiling 2 will be described. The attachment of the instrument main body 6
The lower adapter 5 attached to the upper adapter 4 is locked to the upper adapter 4.

The circular flange portion 14 of the upper adapter 4 is aligned with the circular fitting hole 21 at the center of the lower adapter 5, and the instrument body 6 is pushed up. When the upper adapter 4 is fitted into the fitting hole 21 of the lower adapter 5, a tapered portion formed on the upper surfaces of the upper locking claws 38, 38 protruding facing the fitting hole 21 of the lower adapter 5. The upper and lower adapters 40 and 40 are guided in contact with the peripheral edge of the circular flange portion 14 of the upper adapter 4, and the sliding member 25 is moved in the horizontal direction of the lower adapter 5 via the tapered portion 40 of the upper locking claw 27. Press outward. As a result, the sliding member 25 retreats in the storage portion 23 against the bias of the biasing spring 32 which biases the rear end of the sliding member 25 of the lower adapter 5 toward the fitting hole 21. The upper locking claw 38 and the lower locking claw 39 projecting from the fitting hole 21 of the lower adapter 5 are simultaneously retracted from the fitting hole 21.

When the upper locking claws 27 of the sliding members 25 of the lower adapter 5 are positioned above the circular flange portion 14 of the upper adapter 4 by pushing up the instrument body 6, the urging springs 32, 32 are moved. The sliding members 25, 25 are pushed out into the front fitting holes 21 by the restoring force, and the upper locking claws 2 are inserted into the locking step portions 15 on the peripheral upper surface of the circular flange portion 14 of the upper adapter 4.
The tool main body 6 integrated with the lower adapter 5 is attached to the upper adapter 4 by supporting the locking portions 41, 41 on the lower surfaces of 7, 27 (see FIG. 8).

The base portions 36 of the sliding members 25, 25
The small projections 39, 39 provided on both side edges of the upper surface
The sliding members 25, 25 can be smoothly moved because they come into sliding contact with the back surfaces of the left and right inner portions facing both sides of the cutout portions 57, 57 (see FIG. 5).

When the instrument body 6 is attached to the upper adapter 4, the lower adapter 5 is rotatable with respect to the periphery of the circular flange portion 14 of the upper adapter 4. It can be arbitrarily rotated and arranged at a desired rotation position. Further, the connection connector 13 of the upper adapter 4 and the connection connector 18 of the instrument body 6 shown in FIG.
Is connected, the appliance body 6 is electrically connected.

In the example shown in FIG. 8, the mounting of the appliance body 6 to the upper adapter 4 mounted on the hooking ceiling 2 when the hanging ceiling 2 is a recessed rosette which does not relatively protrude from the ceiling surface 7 has been described. In this case, the upper locking claws 27 of the lower adapter 5 are supported by the locking step 15 of the upper adapter 4.

In the case of an exposed rosette in which the hooking ceiling 2 projects greatly from the ceiling surface 7, first, in the same manner as described above, the locking step portion on the upper peripheral edge of the circular flange portion 14 of the upper adapter 4. The state shown in FIG. 8 in which the upper engaging claws 27 of the lower adapter 6 are supported by the lower adapter 15 is shown in FIG. 8, and the instrument body 6 is further pushed up from this state.

When the instrument main body 6 is pushed up, the lower locking claws 28,
The upper tapered portion 42 of the lower adapter 5 is guided and pressed, and the sliding members 25, 25 are biased against the biasing springs 32, 32 that bias the opposing sliding members 25, 25 of the lower adapter 5, respectively. 25 retreats in the storage sections 23 on both sides, respectively, and the upper locking claw 27 and the lower locking claw 28 of the sliding members 25, 25 of the lower adapter 5 simultaneously retreat from the fitting hole 21, and the lower adapter 5 Lower locking claw 2 of the sliding members 25, 25
When the upper and lower flanges 8 and 28 are positioned above the circular flange portion 14 of the upper adapter 4, the sliding members 25 and 25 are pushed out into the front fitting holes 21 by the return force of the biasing springs 32 and 32, and the upper adapter 4 is circular. Locking step 15 on the upper surface of the periphery of flange 14
The locking portions 43 on the lower surfaces of the lower locking claws 28 are supported, and the instrument body 6 integrated with the lower adapter 5 is attached to the upper adapter 4 (see FIG. 9).

To remove the instrument body 6 from the upper adapter 4, the release knobs 29, 29 provided on the lower surface of the lower adapter base 20, which are exposed on the left and right, are moved toward the left and right outward.

When the release knobs 29, 29 are moved to the left and right outwards, the sliding members 25, 25
The upper locking claws 27, 27 and the lower locking claws 28, 28, which are retracted into the storage portions 23, 23 against the urging of the lower adapter 5 and protrude from the fitting hole 21 of the lower adapter 5, are moved. Each is retracted from the fitting hole 21.

As a result, the respective engagement states of the upper locking claws 27, 27 or the lower locking claws 28, 28 of the lower adapter 5 facing the locking step 15 of the circular flange portion 14 of the upper adapter 4 are released. Then, the instrument body 6 can be removed from the upper adapter 4 by moving the instrument body 6 downward.

The lower adapter 5 is attached to the instrument body 6 by pressing screws 56, 5 disposed on the upper adapter 5 from the upper surface of the top plate 19 of the instrument body 6 through screws.
6 can be screwed into the mounting holes 59 provided on the lower surface of the top plate 19 of the instrument body 6 through screws from the mounting holes 61 provided on the lower surface of the lower adapter base 20. Since screws can be used, mounting can be performed from the upper and lower surfaces of the top plate 19 of the instrument main body 6, and the lower adapter 5 does not require a special mounting plate specially for mounting.
Can be reduced in weight.

[0052]

According to the first aspect of the present invention, the upper locking claw is disposed so as to protrude upward from the upper surface of the lower adapter base, which is a mounting surface for the device main body. Compared to the structure in which the locking claw and the lower locking claw are both built in the lower adapter base, the thickness between the mounting surface with the instrument body and the lower surface of the lower adapter base can be reduced, and as a result,
Regardless of the type of lighting equipment, it can be attached to, for example, a straight tube lighting equipment.

According to the second aspect of the present invention, the retaining plate is provided on the upper surface of the lower adapter base on both sides of the upper surface of the sliding member in the moving direction. Since the small projection is provided on the edge to be in sliding contact with the holding plate, when the instrument body is attached to the upper adapter, the sliding member provided with the upper locking claw and the lower locking claw withdraws and moves into and out of the fitting hole. Movement can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a mounting device for a ceiling-mounted lighting fixture to which a lower adapter according to the present invention is applied.

FIG. 2 is a plan view of a lower adapter.

FIG. 3 is a bottom view of the lower adapter.

FIG. 4 is a cross-sectional view of a main part of the lower adapter showing a mounting state with respect to the instrument body.

FIG. 5 is an enlarged sectional view showing a main part of FIG. 4;

FIG. 6 is an exploded perspective view of a sliding member.

FIG. 7 is an exploded perspective view for explaining the assembling of the sliding member to the lower adapter base.

FIG. 8 is a partially broken cross-sectional view showing a mounting state of the device main body with respect to a hooking ceiling of an embedded type rosette.

FIG. 9 is a partially broken cross-sectional view showing a state in which the instrument body is attached to a hooking ceiling of an exposed rosette.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Attachment device 2 Hook sealing 3 Plug blade 4 Upper adapter 5 Lower adapter 6 Instrument main body 7 Ceiling surface 8 Sealing base 9 Plug blade insertion opening 10 Wide part 11 Narrow part 12 Cord 13 Connector 14 Circular flange part 15 Locking step Part 16 Lock release button 17 Code 18 Connector 19 Connector 20 Top plate 20 Lower adapter base 21 Fitting hole 22 Projection part 23 Storage part 24 Claw doorway 25 Sliding member 26 Locking claw main body 27 Upper locking claw 28 Lower locking Claw 29 Release knob portion 30 Outer wall 31 Spring storing recess 32 Energizing spring 33 Guide hole 34 Lower reinforcing plate 35 Upper reinforcing member 36 Base portion 37 Projecting portion 38 Insertion hole 39 Small projecting portion 40 Taper portion 41 Locking portion 42 Taper portion 43 Locking part 44 Through hole 45 Vertical part 46 Mounting plate part 47 Insertion plate part 48 Mounting hole 49 Tapping screw 5 Inner plates 51 base plate portion 52 side plate portion 53 the support plate 54 through hole 55 bearing hole 56 holding plate 57 notch 58 presser plate mounting hole 59 mounting hole 60 Tapping screw 61 mounting hole

Claims (2)

[Claims] 1. A fitting step for fitting an upper adapter into a lower adapter base provided on a device main body side, wherein both inner side surfaces of the fitting hole face each other, and a locking step of the upper adapter is provided. A sliding member having two upper and lower upper locking claws and a lower locking claw detachably engaging with each other, and the upper locking claw and the lower locking claw opposed to each other are fitted with each other. Biasing springs provided so as to be able to protrude and retract with respect to the inner surface of the hole, and biasing the locking claws to project from the inner surface of the fitting hole, respectively; A release knob is provided on each of the sliding members for retracting from the inner surface of the fitting hole in a state of being immersed against the urging force of the fitting hole, and for mounting a ceiling-mounted lighting fixture exposed on the lower surface of the lower adapter base. In the lower adapter, the lower adapter serving as a mounting surface with the appliance body Over scan of headlining mounted under adapter for lighting apparatus characterized by being arranged to protrude the upper anchor claws above the upper surface. 2. A holding plate for retaining the upper and lower sides of the lower adapter base on both sides in the moving direction of each of the sliding members, and the holding plate is provided on both side edges of the upper surface of the sliding member. The lower adapter for mounting a ceiling-mounted lighting fixture according to claim 1, wherein a small projection is provided for sliding contact.