JP2001256821A - Hook ceiling body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hook ceiling for allowing a stable mounting of a lighting fixture as well as less use of relatively expensive heat-resistant resin for a material cost reduction. SOLUTION: A hook ceiling body 41 is composed of an upper ceiling body 43 mounted on a surface 42 for mounting a lighting fixture for ceiling use and a lower ceiling body 44 mounted so that it is partially fit into the bottom of the upper body. The lower ceiling body 44 has a small diameter cylindrical part 48 at an upper part thereof. The weight of the lighting apparatus is therefore supported by the cylindrical part held in between with a metal hook on the lighting fixture side not shown. An outer circumference 45 of the upper ceiling body 43 has a larger diameter than that of the cylindrical part 48 and the metal hook is regulated to move upward. In addition, a n outer- circumferential claw 46 projecting toward the cylindrical part 48 beginning at the upper ceiling body 43 blocks the rotation of the metal hook. The above allows the stable mounting of the lighting fixture. No other part than the lower ceiling body 44 requires the use of the expensive heat-resistant resin, thus allowing a reduction in the material cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanging ceiling body for supporting a lighting fixture on a lighting fixture mounting surface such as a ceiling.

[0002]

2. Description of the Related Art When a lighting fixture is mounted on a ceiling portion of a house, a hanging ceiling body for fixing the lighting fixture to a ceiling body fixed to the ceiling via a hooking cap is often used.

FIG. 7 shows the structure of a hooking ceiling disclosed in Japanese Utility Model Publication No. 1-10812. A hanging ceiling cap receiving base (body) 12 is fixed to a lighting fixture mounting surface 11 such as a ceiling so as to protrude downward. A ceiling cap 13 is attached to the hanging ceiling cap receiving base 12 together with the lighting fixture body 14 from below. The lighting fixture body 14 includes a fluorescent lamp 15
Are supplied, and power is supplied through a cord portion 16 pulled out from the sealing cap 13.
The lighting fixture cover 17 is attached so as to be hooked on an upper part of the lighting fixture main body 14.

[0004] By the way, lighting fixtures with higher illuminance have been demanded, and lighting fixtures have been increasing in size. Increasing the size of the luminaire means that the distance to the luminaire above the head becomes shorter, which gives the occupant a sense of oppression. Therefore, a device has been devised to eliminate such a feeling of oppression by mounting the lighting fixture closer to the ceiling. The upper part of the lighting fixture body 14 is further moved upward for mounting the lighting fixture main body 14 than the conventional structure shown in FIG.

[0005] By the way, in the structure of the conventional hanging ceiling, as shown in FIG.
The weight of the entire lighting fixture including the lighting fixture body 14 and the lighting fixture cover 17 is added to the ceiling cap 13 attached to the lighting fixture. When the size of the lighting fixture is increased, not only does the weight increase, but also when the upper end of the lighting fixture is pressed against the lighting fixture mounting surface 11, that is, the ceiling portion, the repulsive force from the lighting fixture mounting surface 11 side also reduces the sealing cap 13. Will join. Therefore, a downward force is applied to the ceiling cap 13 so as to greatly exceed the weight of the entire lighting fixture. Therefore, in the combination of the conventionally used hanging sealing cap support 12 and the sealing cap 13, an L-shaped hook (not shown) for hooking the sealing cap 13 to the hanging sealing cap support 12.
However, there was a problem that the strength was insufficient and there was a risk of deformation. The L-shaped hook also has a role of electrically connecting to the electric wire on the hook sealing cap receiving base 12 side and transmitting electricity to the lighting fixture side. Therefore, when the L-shaped hook is deformed due to excessive load,
There has also been a problem that electricity is not stably supplied to the lighting equipment side.

On the other hand, as the size and capacity of the lighting equipment increase, the heat emitted from the lighting equipment also increases, and when the lighting equipment body 14 is brought into close contact with the lighting equipment mounting surface 11 such as a ceiling, the heat is radiated. Also gets worse. For this reason, there is a possibility that the sealing cap support (body) 12 cannot withstand high heat.

FIG. 8 shows an appearance of a hooking ceiling proposed under such a technical background. The proposed hooking sealing body 21 is made of a heat-resistant resin having an integral structure in which a flange 23 having a diameter slightly larger than that of the cylindrical body 22 is attached to the bottom of the cylindrical main body 22.
Although not shown, a cable fixing portion for fixing an electric wire drawn from the ceiling to the upper surface side of the flange portion 23 and an electric contact piece with an L blade (not shown) of the hooking sealing cap are attached thereto.

FIG. 9 shows a main part of a state where the lighting fixture is hooked on the hooking ceiling. A hanging ceiling body 21 is fixed to the lighting fixture mounting surface 11 similar to that shown in FIG. Hook ceiling body 2
A pair of hooks 26 and 27 that can move forward and backward in the direction of arrow 25 (horizontal direction) are provided on the side of the cylindrical body 22.
, And moves further upward than the position shown in the figure to pinch the side surface of the cylindrical main body 22.
The flange 23 projects from the lower end of the cylindrical body 22 in a flange shape. For this reason, a pair of hooks 2
The tip portions of the lighting fixtures 6 and 27 are hooked, and support the entire weight of the lighting fixture 28. A hook sealing cap 32 having an L-shaped hook metal fitting 31 is attached to the flange 23, and a power supply cord 3 is provided from here.
3 is drawn out. This hanging ceiling cap 32 is different from the conventional one in that the fluorescent lamp 3
There is no need to support the entire weight of the lighting fixture 28 containing the ballast 4 and the ballast 35 and the like. Therefore, it can be made thinner in the height direction, which contributes to shortening the length of the lighting fixture 28 in the height direction.

[0009]

However, the hooking sealing body 21 shown in FIGS. 8 and 9 has some new problems. One of them is cost increase. As described above, the portion of the hook ceiling that comes into contact with the lighting fixture or its fixture becomes hot. The hooking sealing body 21 shown in FIGS. 8 and 9 uses a heat-resistant resin in which a cylindrical main body 22 and a flange 23 are integrally formed. The heat-resistant resin is generally expensive, and its use is increased by integral molding. Therefore, the cost of the hooking sealing body 21 increases due to its material.

In addition, there is a problem that the hooking sealing body 21 often lacks stability in mounting the lighting equipment 28. The lighting fixture mounting surface 11 such as a ceiling has various aspects on its surface. Further, the lighting fixture mounting surface 11 does not necessarily form a plane completely parallel to the upper surface of the lighting fixture 28. Therefore, when this hooking sealing body 21 is used, a small elastic body such as a sponge is inserted between the upper end portion 28A of the lighting fixture 28 and the lighting fixture mounting surface 11, and a delicate positional error between them is inserted. Had to be adjusted. For this reason, an operation of appropriately cutting and attaching an elastic material such as a sponge into small pieces at the installation site is required, which is complicated. Further, if this operation is omitted, there is a problem that the lighting fixture 28 is slightly tilted or the lighting fixture 28 itself is gradually rotated around the cylindrical body 22 as a rotation axis.

Accordingly, a first object of the present invention is to provide a hooking sealing body capable of reducing material costs by reducing the use of a relatively expensive heat-resistant resin.

A second object of the present invention is to provide a hanging ceiling body to which a lighting fixture can be stably mounted irrespective of a state of a lighting fixture mounting surface such as a ceiling.

[0013]

According to the first aspect of the present invention, there are provided (a) a cylindrical ceiling body upper body fixed to a lighting fixture mounting surface such as a ceiling, and (b) a bottom portion of the ceiling body upper body. The upper end is made freely connectable, and in the connected state, the leading end portion is predetermined in the axial direction more than the diameter of the lower end portion of the upper body of the sealing body upper portion so that a step portion having a diameter smaller than that of the surrounding portion is formed in the connected portion. A hooking ceiling is provided with a sealing body lower body made of a heat-resistant material having a small diameter over a long period.

That is, according to the first aspect of the present invention, the upper body of the sealing body is combined with the lower body of the sealing body whose tip portion has a smaller diameter in the axial direction by a predetermined length than the diameter of the lower end portion of the upper body of the sealing body. did. For this reason, only the lower body of the sealing body may be made of a heat-resistant material, and for example, it is not necessary to use an expensive thermosetting resin. Therefore, not only can the cost be reduced, but also if the upper body of the sealing body is formed of a normal thermoplastic resin, a large number of such components can be taken and the production can be simplified.

According to the second aspect of the present invention, (a) a cylindrical ceiling body upper body which is fixed to a lighting fixture mounting surface such as a ceiling and whose lower part has a small diameter over a predetermined length in the axial direction; The upper part of the ceiling body is connected freely to the bottom of the main body, and the outer diameter of the tip portion is made smaller than the diameter of the step part so that the connected part forms a step part smaller in diameter than the surroundings in the connected state. And a sealing body lower body made of a heat-resistant material having a large diameter.

That is, according to the second aspect of the present invention, a cylindrical sealing body upper main body whose lower part has a small diameter over a predetermined length in the axial direction, and the upper part thereof can be freely connected to the bottom of the sealing body upper main body, A lower body of a sealing body made of a heat-resistant material in which the outer diameter of the tip portion is larger than the diameter forming the step portion so that the connecting portion forms a step portion smaller in diameter than the surrounding portion in the connected state. And decided to combine. For this reason, only the lower body of the sealing body may be made of a heat-resistant material, and for example, it is not necessary to use an expensive thermosetting resin. Therefore, not only can the cost be reduced, but also if the upper body of the sealing body is formed of a normal thermoplastic resin, a large number of such components can be taken and the production can be simplified.

According to a third aspect of the present invention, in the hooking ceiling according to the first or second aspect, the step portion is provided with a plurality of spaces spaced apart in a predetermined rotational direction about a center axis of the cylindrical sealing body upper body. It is characterized in that claws are arranged.

That is, according to the third aspect of the present invention, since the plurality of claws are arranged on the step, the luminaire cannot freely rotate the step, and the mounting becomes stable.

According to a fourth aspect of the present invention, the hook can be cut off by the hooking sealing according to the first or second aspect.

That is, according to the fourth aspect of the present invention, the nail can be cut off so that it can be adapted to various mounting modes.

According to the fifth aspect of the present invention, in the hanging ceiling according to the first or second aspect, the inside of the lower body of the ceiling body is hooked to the electric wire drawn out from the lighting fixture mounting surface side such as a ceiling and the step. A metal piece for electrically connecting to the lighting fixture is arranged, and the bottom surface of the ceiling body upper body also serves as a lid for covering the upper space of the metal piece.

In other words, according to the fifth aspect of the present invention, the hooking ceiling is made into two parts, the upper body of the sealing body and the lower body of the sealing body, so that parts required for the hooking ceiling proposed in FIG. 8 can be omitted. You can do it.

According to a sixth aspect of the present invention, the hooking ceiling according to the first or second aspect has a ceiling body upper body and a ceiling body lower body which are screwed from the ceiling body lower body side to a lighting fixture mounting surface such as a ceiling. Screw holes for fixing are provided. Of these, the screw holes on the upper body side of the sealing body engage with the tips of screws inserted from the lower body side of the sealing body, and this falls down by gravity. This is characterized in that a temporary fixing member for preventing the screw hole from being formed integrally with the resin around the screw hole.

That is, in the invention according to claim 6, since it is not necessary to manufacture the sealing body upper main body of the hooking ceiling with a heat-resistant material, for example, it is not necessary to use a thermosetting resin, and it is possible to use a thermoplastic resin. When used, a temporary fixing member for preventing the screw from dropping can be formed integrally with the resin around the screw hole. Therefore, it is not necessary to insert the component formed of the thermoplastic resin into the screw hole formed of the thermosetting resin, and in this sense, the number of components can be reduced.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments.

FIG. 1 shows a state in which a hooking sealing body according to an embodiment of the present invention is mounted on a ceiling or the like. The hooking ceiling body 41 includes a ceiling body upper body 43 attached to a lighting fixture mounting surface 42 such as a ceiling, and a ceiling body lower body 44 incorporated into the ceiling body upper body 43 from below. Outer peripheral portion 45 of upper body 43 of the sealing body
Four outer peripheral claws 46 (two of which are hidden and not shown in the figure) protrude at intervals. The sealing body lower body 44 includes an outer peripheral claw 46 of the sealing body upper body 43, a small-diameter cylindrical portion 48 sandwiched between upper claws described later, and a cap portion disposed to cover the lower surface of the cylindrical portion 48. 49. The outer diameter of the cap portion 49 is the same as the outer diameter 45 of the upper body of the sealing body. Each part of the sealing body upper main body 43 is integrally molded with a normal resin, and the sealing body lower main body 44 is integrally molded with a heat-resistant resin. Screw holes 51, 51 for inserting screws (not shown) for fixing the ceiling body lower body 44 to the lighting fixture mounting surface 42 via the ceiling body upper body 43, and the ceiling body lower body Mounting holes 52 </ b> A and 52 </ b> B for mounting a hooking sealing cap (not shown) are formed in a mounting bracket (not shown) arranged inside 44.

FIG. 2 shows the upper body of the sealing body viewed obliquely from above. The upper body 43 of the sealing body has a structure in which a cylindrical wall 62 having a predetermined height is formed around a circular bottom plate portion 61, and two portions just inside the wall 62 are described with reference to FIG. Screw-passing cylindrical portions 63A and 63B for passing screws through their central portions are arranged. In addition, electric wire insertion holes 65A and 65B for inserting electric wires (not shown) drawn from the lighting fixture mounting surface 42 such as the ceiling shown in FIG. These wire insertion holes 65A, 65B
The pressing portion 66 having a spring property disposed between the lower portion 44 and the lower portion 44 of the sealing body
It is used to push down a spring (not shown) located on the side to release the fixing operation of the distal end portion of the electric wire inserted from the electric wire insertion holes 65A and 65B.

FIG. 3 is an oblique view of the lower body of the sealing body from above. Ceiling body lower body 4
4 includes screw passage cylindrical portions 71, 71 connected to the screw passage cylindrical portions 63A, 63B shown in FIG. Further, the portions corresponding to the pressing pieces 66 in FIG. 2 are in contact with the inserted electric wires and have the mounting holes 52A, 52 shown in FIG.
Metal piece 7 for making electrical contact with an L-shaped hook of a hooking cap (not shown) inserted from side B
3A and 73B are arranged. Cylindrical part 7 for screw passage
At a location right next to 1, 71, a lower claw 48A having a shape slightly protruding from the inner surface of the cylindrical portion 48 is disposed, although only one of them is visible in the figure.

FIG. 4 shows how the lower and upper claws are engaged. A lower claw 48A protruding from the inner surface of the cylindrical portion 48 of the lower body 44 of the sealing body shown in FIG.
Are engaged with upper claws 78 provided on the center side of the outer peripheral claws 46 of the sealing body upper main body 43 shown in FIG. 1 at a total of two positions.

The upper body 4 of the sealing body shown in FIG.
3 is made of a normal thermoplastic resin different from thermosetting. Therefore, not only is it inexpensive, but also, in the holes of the screw passing cylindrical portions 63A, 63B, the locking portions for temporarily fixing the tip portions of the screws inserted from the screw passing cylindrical portions 71, 71 shown in FIG. The pieces can be formed integrally. In the case of the hooking sealing body 21 shown in FIG. 8, even if a similar locking piece for temporarily fixing a screw from the screw hole is to be formed inside the hole, such an integral piece is formed of a thermosetting resin. It is difficult to mold. Therefore, it is necessary to separately create a part instead of the part and insert it into the hole, which is a factor of increasing the number of parts. In the case of the hooking ceiling of the present embodiment, the number of parts can be reduced by two at this point.

Moreover, in the case of this embodiment, the hooking sealing body 41 shown in FIG. 1 is separated into two parts vertically like a sealing body upper body 43 and a sealing body lower body 44 as shown in FIGS. It is configured in the form. Therefore, the metal pieces 73A, 73B shown in FIG.
A member corresponding to a “cover” or a “presser” that covers the portion from above to prevent falling off can also be used as the bottom plate 61 of the sealing body upper main body 43. That is, in the case of the conventional hooking sealing body 21 shown in FIG. 8, a member corresponding to the “lid” or “presser”
Although a fixing means such as two screws for detachably fixing this is required, these parts can be shared by the upper body 43 of the sealing body. As described above, in the hooking sealing body 41 of this embodiment, even if only the above-mentioned examination points are used, when the fixing means is two screws, a total of four parts are required.
Can be reduced. Further, since the sealing body upper main body 43 is made of a thermoplastic resin, the pressing piece 66 can also be formed integrally with the surrounding resin part, and in this sense, the number of parts can be reduced.

Further, the hooking sealing body 41 of the present embodiment.
8 is larger than the hooking sealing body 21 shown in FIG. One is the stability in the rotational direction of preventing and stabilizing the rotation of the lighting fixture, and the other is the stability of the mounting of the lighting fixture in the vertical direction.
The first point is ensured by the presence of the outer claw 46 shown in FIGS. The latter point is ensured by the combination of the groove-shaped cylindrical portion 48 having a smaller diameter than the periphery shown in FIG. 1 and the upper claw 78 and the lower claw 48A. The engagement between the upper claws 78 and the lower claws 48A has been described with reference to FIG. 4, and other points will be described next.

FIG. 5 shows a mounting state of a lighting fixture which can be attached using the hooking ceiling of the present embodiment so that the appearance is almost the same as that of a directly mounted fixture. The hanging ceiling body 41 is mounted on the lighting fixture mounting surface 42. The grooved cylindrical portion 48 having a smaller diameter than the periphery of the hooking sealing body 41 has an arrow 8
A pair of hooks 82, 83 which are arranged so as to be able to advance and retreat in one direction, that is, in a direction parallel to the ceiling surface, are attached so as to sandwich the cylindrical portion 48. That is, the pair of hooks 82, 83
When a button (not shown) of the lighting device main body 84 with the attached 83 is pushed in, the distance between the two expands against the action of a spring (not shown), and passes through the cap portion 49 so that the upper surface of the lighting device main body 84 is almost flush with the lighting device mounting surface 42. Can be lifted to the point of contact. When the button is released from this button in this state, the pair of hooks 82 and 83 sandwich the groove-shaped cylindrical portion 48 having a smaller diameter than the surroundings as shown in FIG. 5 by the action of the spring.

FIG. 6 shows the relationship between the hooking ceiling and a pair of hooks in a state where the lighting fixture is mounted, by cutting the hooks along a horizontal plane. A pair of hooks 82 and 83 are sandwiched from the left and right directions in the figure around the outer periphery of the cylindrical portion 48 of the hook sealing body 41. Thus, the entire weight of the lighting fixture body 84 is received by the protruding portion of the large-diameter cap portion 49 shown in FIG. Therefore, it is possible to use a relatively thin hook sealing cap 87 having the L-shaped hook metal fitting 86. The upward movement of the pair of hooks 82 and 83 is restricted by the sealing body upper body 43 having a diameter larger than that of the hooks 82 and 83. Therefore, the position can be stably held in the up-down direction at a position close to the lighting fixture mounting surface 42 so as to keep almost the contact state, and the upper end of the lighting fixture main body as in the conventional product shown in FIG. There is no need to insert a small cut elastic body such as a sponge between the portion 28A and the lighting fixture mounting surface 11 to adjust a delicate positional error between them.

Furthermore, the hooking sealing body 41 of the present embodiment.
The four outer claws 46 project from the outer peripheral portion 45 of the sealing body upper main body 43 at an interval from the outer peripheral portion of the groove-shaped cylindrical portion 48. Therefore, if the interval between the outer peripheral claws 46 is set according to the width of the hooks 82, 83, the outer peripheral claws 46 can be arranged so as to sandwich the hooks 82, 83 as shown in FIG. it can. Thereby, rotation of the lighting fixture main body 84 attached to the hanging ceiling body 41 can be prevented.

The outer peripheral claw 46 of this embodiment can be easily cut off by folding or the like during construction. For this reason, it is also possible to remove only a part or all of the hook fittings 82 and 83 according to the width. Therefore, it is not necessary to arrange four outer peripheral claws 46 as in this embodiment, and in some cases, five or more outer claws 46 may be arranged to remove a part or all of these depending on the state of the hooks 82, 83. Can also.

In the above-described embodiment, the small-diameter groove-shaped cylindrical portion 48 is formed on the sealing body lower main body 44 side. The part may be arranged on the ceiling body upper body 43 side. Also,
The outer peripheral claw 46 is unnecessary depending on the hooking ceiling. In the embodiment, the outer peripheral claw 46 is connected to the lower body 4 of the sealing body.
Although mounted on the side of the sealing body, it is obvious that it may be mounted on the side of the ceiling body upper body 43.

[0039]

As described above, according to the first aspect of the present invention, the sealing body has the upper body and the distal end thereof made smaller in diameter in the axial direction than the diameter of the lower end of the upper body by a predetermined length. Since the lower body is combined with the lower body, only the lower body of the sealing body may be made of a heat-resistant material. For example, it is not necessary to use an expensive thermosetting resin. Therefore, not only can the cost be reduced, but also if the upper body of the sealing body is formed of a normal thermoplastic resin, it is possible to obtain a large number of such components and simplify the production.

According to the second aspect of the present invention, a cylindrical sealing body upper body whose lower part has a small diameter over a predetermined length in the axial direction, and the upper part can be freely connected to the bottom of the sealing body upper body. A sealing body made of a heat-resistant material having an outer diameter of a tip portion larger than a diameter forming the step portion so that the connected portion forms a step portion having a smaller diameter than the surrounding portion in a connected state. Since the lower body is combined with the lower body, only the lower body of the sealing body may be made of a heat-resistant material, and for example, it is not necessary to use an expensive thermosetting resin. Therefore, not only can costs be reduced,
If the upper body of the sealing body is formed of a normal thermoplastic resin, it is possible to obtain a large number of such components, which has the effect of simplifying the production.

According to a third aspect of the present invention, the stepped portion of the hooking ceiling according to the first or second aspect is spaced apart from the center axis of the cylindrical sealing body upper body in a predetermined rotational direction. Since the plurality of claws are arranged, the lighting fixture cannot rotate freely on this step, and the mounting becomes stable.

According to the fourth aspect of the present invention, since the nail can be cut off, it is possible to cope with various mounting modes.

Further, according to the fifth aspect of the present invention, the hanging ceiling is formed into two parts, the upper body of the sealing body and the lower body of the sealing body, so that the parts required for the hanging ceiling proposed in FIG. 8 are omitted. You can do it.

According to the sixth aspect of the present invention, it is not necessary to form the upper body of the sealing body of the hooking ceiling with a heat-resistant material. Therefore, for example, it is not necessary to use a thermosetting resin, and it is not necessary to use a thermoplastic resin. When resin is used, a temporary fixing member for preventing the screw from dropping can be formed integrally with the resin around the screw hole. Therefore, it is not necessary to insert a component formed of a thermoplastic resin into a screw hole formed of a thermosetting resin, and in this sense, the number of components can be reduced, contributing to cost reduction. Become.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a hooking ceiling according to an embodiment of the present invention is attached to a ceiling or the like.

FIG. 2 is a perspective view of a ceiling body upper main body constituting the hooking ceiling of the present embodiment, as viewed from obliquely above.

FIG. 3 is a perspective view of a lower part of a sealing body constituting the hooking ceiling of the present embodiment, as viewed obliquely from above.

FIG. 4 is a cross-sectional view of a main part of the sealing body, showing a state of engagement between a lower pawl and an upper pawl in the embodiment.

FIG. 5 is a cross-sectional view illustrating a state in which a lighting fixture is attached using the hooking ceiling of the present embodiment.

FIG. 6 is a cross-sectional view illustrating a relationship between a hooking ceiling and a pair of hooks in a state where the lighting fixture of the present embodiment is mounted, by cutting the hooks along a horizontal plane.

FIG. 7 is a cross-sectional view illustrating a structure of a conventional hanging ceiling.

8 is a perspective view showing the appearance of a hooking ceiling proposed to solve the problem shown in FIG. 7;

FIG. 9 is a cross-sectional view illustrating a main part of a state where the lighting fixture is hooked on the hooking ceiling shown in FIG.

[Explanation of symbols]

 41 Hook Ceiling Body 42 Lighting Fixture Mounting Surface such as Ceiling 43 Ceiling Body Upper Body 44 Ceiling Body Lower Body 46 Outer Claw 48 Cylindrical Part 49 Cap Part 61 Bottom Plate 63, 71 Screw Passing Cylindrical Part 65 Wire Insertion Hole 66 Push Piece Parts 82, 83 Hook

Claims (6)

[Claims] 1. A cylindrical ceiling body upper body fixed to a lighting fixture mounting surface such as a ceiling, and an upper part thereof is freely connected to a bottom of the ceiling body upper body, and is connected to the connection part in a connected state. A sealing body lower body made of a heat-resistant material whose tip portion is made smaller in diameter in the axial direction by a predetermined length than the diameter of the lower end portion of the sealing body upper body so that a step portion with a smaller diameter is formed. A hooking sealing body characterized by doing. 2. A cylindrical ceiling body upper body fixed to a lighting fixture mounting surface such as a ceiling and having a lower portion having a small diameter over a predetermined length in an axial direction, and an upper portion connected to the bottom of the ceiling body upper body. It is made of a heat-resistant material in which the outer diameter of the tip portion is larger than the diameter forming the step portion so that the connected portion forms a step portion having a smaller diameter than the periphery in the connected state. A hooking sealing body comprising a sealing body lower body. 3. The stepped portion has a plurality of claws arranged at predetermined intervals in a rotation direction about a center axis of the cylindrical sealing body upper body. Or the hooking sealing body according to 2. 4. The hooking sealing body according to claim 3, wherein said claw is releasable. 5. A metal piece for electrically connecting an electric wire drawn from a lighting fixture mounting surface such as a ceiling and a lighting fixture to be hooked on the step portion is arranged inside the lower part of the ceiling body. 3. The hanging sealing body according to claim 1, wherein the bottom surface of the upper body of the sealing body also serves as a lid for covering an upper space of the metal piece. 6. The ceiling body upper body and the ceiling body lower body are provided with screw holes for screwing from the ceiling body lower body side to the lighting fixture mounting surface such as the ceiling. A temporary fixing member around the screw hole is provided inside the screw hole on the body upper body side so as to engage with a tip end of a screw inserted from the sealing body lower body side and prevent the screw from falling downward due to gravity. 3. The hooking sealing body according to claim 1, wherein the hooking sealing body is formed integrally with a resin.