JPH05120906A - Luminaire - Google Patents

Abstract

PURPOSE:To improve the assembling workability, and make a thickness of each member thin by combining multiple frame members in the predetermined state. CONSTITUTION:A hook projecting part 12 enters into a hook hole 21 and the hook end surface of the projecting part 12 is hooked on a hole edge of the insertion hole 21 with the overlap of bent pieces 7, 10 and a vertical piece 15 in the horizontal direction. Each end of frame materials 2, 3 are connected to each other, and simultaneously, both ends of both the frame materials are overlapped with each other in the vertical direction, and a standing piece 18 is fitted in the end of a horizontal piece 4 to pinch the end of the horizontal piece 4 from the upper and the lower between the horizontal piece 4 and the standing piece 18, and the distortion of a fitting frame is restricted. Hook projecting parts 22, 13 enter hook holes 30, 33 with the overlap of a vertical piece 5 with an intermediate bent piece 33 of a socket fitting fixture 25 and the overlap of a vertical piece 15 with an end bent piece 28 of the socket fitting fixture 25 in the horizontal direction, and the hook surface of each projecting part is hooked on a hole edge thereof. The fitting fixture 25 is thereby connected to the fitting frame. Simultaneously, a horizontal piece 27 of the fitting fixture 25 is overlapped with the lower surface of the ends of the horizontal pieces 4, 14 overlapped in the vertical direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture which is mounted by being embedded in a ceiling.

[0002]

2. Description of the Related Art Conventionally, a quadrangular mounting frame is formed by framing a metal frame member having an inverted L-shaped cross section, and in this mounting frame,
A built-in lighting fixture that has a built-in reflective frame that covers the top opening of this frame and has a lamp is
No. 9-26968.

The mounting frame of the luminaire described in this publication is
It is formed of a pair of first frame members and a pair of second frame members. These frameworks are performed by inserting the crimping claw pieces provided at both ends of the second frame member into the slits provided at both ends of the first frame member, and then bending the claw pieces. The end portions of the first frame member and the second frame member of this mounting frame are vertically overlapped with each other, and a suspension bolt from the ceiling is passed through a mounting hole provided in this portion, and the mounting frame is suspended by this bolt. Is to be placed on the ceiling. Further, a reinforcing frame is built in the upper opening of the mounting frame.
The end portion of the reinforcing frame is screwed to the central portion of the horizontal mounting portion formed on each of the frame members so as to face the upper surface opening.

[0004]

As described above, in the luminaire described in the above publication, since the first member and the second member are connected by the troublesome caulking work, the workability of assembling the mounting frame is good. There is a problem that there is no. Also, the portion through which the suspension bolt that suspends the mounting frame is inserted has a double wall, but when the plate thickness of each frame material is made thin, the portion where the nut screwed to the suspension bolt hits The strength is reduced, and there is a fear that sufficient strength cannot be secured against the tightening force of the nut. Therefore, there is a problem that it is difficult to reduce the plate thickness of each frame material forming the mounting frame.

An object of the present invention is to provide a lighting fixture which can improve the assembling workability and can reduce the plate thickness of the first member and the second member forming the mounting frame, and therefore can be manufactured at low cost.

[0006]

In order to achieve the above object, the lighting apparatus of the present invention comprises a pair of first horizontal pieces and a first vertical piece bent downward from one side edge thereof.
A frame member, and bent pieces that are respectively bent at both ends of the first horizontal piece and the first vertical piece toward the inner surface side of the first frame material,

[0007] A second horizontal piece is provided by overlapping both ends on the end of the first horizontal piece from above and below, and one end of the second horizontal piece is bent downward and both ends are folded. A pair of second frame members that have a second vertical piece that is superposed on the bending piece in the horizontal direction and that forms a rectangular mounting frame with the first frame member;

The end of the first horizontal piece is cut and raised at the end of the second horizontal piece so that the other end edge of the end of the first horizontal piece is sandwiched between the end of the first horizontal piece and the second horizontal piece. At least one first hook that is formed to have a hook end surface on one of the cut-and-raised piece engaged with the other end edge, the bent piece and the second vertical piece that overlap in the horizontal direction. A stop projection, and a first hook hole provided on the other of the bent piece and the second vertical piece, into which the first hook projection is inserted and whose hook end surface is engaged.

The third horizontal piece is superposed on the lower surface of the end portion of the first horizontal piece or the second horizontal piece, and is bent downward from one end of the third horizontal piece to be horizontal to the inner surface of the second vertical piece. A pair of socket mounting brackets each having both end portions having end bent pieces that are overlapped from each other, and these end portions are integrally connected by a socket mounting portion; The mounting holes for hanging, which are respectively provided at the end of the horizontal piece and the third horizontal piece and communicate with each other, and the one of the second vertical piece and the end bent piece that overlap in the horizontal direction, are hooked. At least one second hooking protrusion that has an end face and is formed to project, and the second hooking protrusion that is provided on the other side of the second vertical piece and the end bending piece enters the hook. Second hook hole with which the toe surface engages, and the socket An intermediate bent piece that is bent from the attaching portion and overlaps the inner surface of the first vertical piece in the horizontal direction, and one of the first vertical piece and the intermediate bent piece that are overlapped in the horizontal direction have a hooking end surface. At least one third hooking protrusion that is formed to overhang, and the third hooking protrusion that is provided on the other of the first vertical piece and the intermediate bending piece, and the hooking end surface of the third hooking protrusion enters. A third hooking hole to be engaged, a reflector plate that covers the opening of the upper surface of the mounting frame and is mounted over the pair of socket mounting brackets, and a reflector plate that is respectively mounted on the socket mounting portion and is located below the reflector plate. And a lamp socket that supports a lamp that is disposed as a lamp.

[0010]

In the above structure, as the bent piece and the second vertical piece overlap with each other in the horizontal direction, the first hooking protrusion provided on one side of the bent piece and the second hooked piece on the other side of the second vertical piece. The hooking end surface of the first hooking protrusion is caught in the hole by the hole edge of the first hooking hole. By this engagement, the ends of the first frame member and the second frame member that form the mounting frame can be connected to each other without using a fixture such as a screw. Simultaneously with this connection, the end portions of both frame members overlap each other in the vertical direction, and the cut-and-raised piece is engaged with the end portion of the first horizontal piece at the same time, and the cut-raised piece is placed between the end portion of the second horizontal piece and 1 The end of the horizontal piece is sandwiched from above and below, thereby suppressing the distortion of the mounting frame. Along with the overlapping of the first vertical piece and the second vertical piece with the end bending piece and the intermediate bending piece of the socket fitting from the horizontal direction, the second and third hooks provided on one of them. The stop projections respectively enter the second and third hooking holes provided on the other side, and the hooking end surfaces of the second and third hooking projections are formed at the hole edges of these second and third hooking holes. Each one is hooked. By this engagement, the socket mounting bracket can be connected to the mounting frame forming the mounting frame without using a fixture such as a screw. Simultaneously with this connection, the third horizontal piece of the socket fitting is superposed on the lower surfaces of the end portions of the first and second horizontal pieces which are vertically stacked, and together with these first and second horizontal pieces, a triple wall is formed. Forming 4, the suspension bolt for suspending the mounting frame is inserted there. In addition, the socket mounting bracket supports the reflector provided in the main body of the fixture and also supports the lamp socket.

[0011]

Embodiments of the present invention will be described below with reference to FIGS.

In FIG. 1 and FIG. 2, reference numeral 1 designates a mounting frame made of sheet metal and having a quadrangular frame, and a pair of first frame members 2 arranged to face each other and a pair of second frame members arranged to face each other. It is formed with the frame member 3.

As shown in FIG. 3 and the like, the first frame member 2 includes a first horizontal piece 4, a first vertical piece 5 bent downward from one side edge of the first horizontal piece 4, and a first horizontal piece 4. The horizontal piece 4 has a first inner edge piece 6 bent downward from the other side edge. The lengthwise ends of the first horizontal piece 4 are formed at both ends in the lengthwise direction of the first horizontal piece 4 and are formed with bent pieces 7 protruding toward the inner surface of the first frame member 2 and bent at right angles. A first mounting hole 8 is formed in each of both ends 4a in the direction.

The first vertical piece 5 has the same length as the first horizontal piece 4, and a lower end bent portion 9 is formed at the lower end edge thereof so as to project to the outer surface side of the first frame member 2 and bent at a right angle. ing. First
Bending pieces 10 that are bent at a right angle and project toward the inner surface of the first frame member 2 are also formed at both ends in the length direction of the vertical piece 5.

The height of the first inner edge piece 6 is considerably smaller than the height of the first vertical piece 5, and the length thereof is also shorter than the length of the first horizontal piece 4 and the first vertical piece 5. The first inner edge piece 6 is provided with both ends thereof separated from the bending piece 7, and is also formed of a vertical portion 6a and a horizontal portion 6b, and both ends of the horizontal portion 6b are provided with the bending piece 7b. The engaging tongue 11 is slightly projected in the direction.

At least one first hooking projection 12 is provided on each of the bending pieces 7 and 10. These retaining projections 12 are formed by, for example, a semi-conical stamping die, and have a retaining end surface 12a extending in a direction perpendicular to the bending pieces 7 and 10 as shown in FIG. For example, it is projected toward the inner surface side of the first frame member 2. These first
The hooking protrusion 12 has its hooking end surface 12a opposed to the first vertical piece 5 and has the tapered tip 12b of the first vertical piece 5.
It is provided in the direction away from.

At the same height position of the first vertical piece 5, a plurality of third hooking protrusions 13 are provided by overhang molding. These latching protrusions 13 have the same structure as the first latching protrusions 12 and are in the shape of a semi-cone having a latching end surface. And the 3rd latching protrusion 13 makes the latching end surface 1st.
It is provided so as to face the horizontal piece 4 and has a tapered tip portion directed downward.

The second frame member 3 includes a second horizontal piece 14 and a second horizontal piece 14 which is bent downward from one side edge of the second horizontal piece 14.
It has a vertical piece 15 and a second inner edge piece 16 bent downward from the other side edge of the second horizontal piece 14. Second horizontal piece 1
The end portion 14a of No. 4 is disposed so as to overlap the lower surface of the end portion 4a of the first horizontal piece 4 through the bent piece 7 and the first inner edge piece 16, and the first mounting portion 14a is attached to the end portion 14a. Hole 8
A second mounting hole 17 that communicates with is formed.

A cut-and-raised piece 18 is formed on the end portion 14a of the second horizontal piece 14. This cut-and-raised piece 18 is approximately L
It has a letter shape and is cut and raised on the outer surface side of the second frame member 3.
The cut-and-raised piece 18 has a first portion between it and the end portion 14a.
The other end of the end 4a of the horizontal piece 4 is engaged with the other end so as to sandwich it from above and below.

The second vertical piece 15 has the same length as that of the second horizontal piece 14, and a lower end bent portion 19 which is bent at a right angle so as to project to the outer surface side of the second frame member 2 is formed at the lower end edge thereof. ing. A plurality of first engaging holes 21 that engage with the first hooking protrusions 12 are formed at both ends of the second vertical piece 15 in the length direction. These engagement holes 21 are formed of square holes, for example.

At both ends in the lengthwise direction of the second vertical piece 15, one second piece is provided at a position apart from the bending piece 7 overlapping the outer surface thereof.
The latching protrusions 22 are formed respectively. The second hooking protrusion 22 has the same structure as the first hooking protrusion 12, and has a semi-conical shape having a hooking end surface. The second hooking protrusion 22 has its hooking end face directed toward one end in the lengthwise direction of the second vertical piece 15 and has the tapered tip end portion of the second vertical piece 15.
Is provided toward one end in the length direction.

The second inner edge piece 16 has the same length as the second horizontal piece 14 and the second vertical piece 15, and the inner edge piece 16 is formed from a vertical portion 16a and a horizontal portion 16b in an L-shaped cross section. .. As shown in FIG. 3, the height A of the second inner edge piece 16 is formed to be equal to the height B of the vertical portion 6a of the first inner edge piece 6, so that the end portion of the second inner edge piece 16 has the first portion. It is designed to be sandwiched between the end 4a of the horizontal piece 4 and the engaging tongue piece 11.

The first and second frame bodies 2 and 3 having the above-described structure are connected at their ends to form the mounting frame 1. In this connection, the end portion of the second frame body 3 is inserted between the bent piece 7 of the first horizontal piece 4 and the first inner edge piece 6 and is inserted inside the end portion of the first frame body 2. Then, the first and second horizontal pieces 4, 1
The end portions 4a and 14a of 4 are vertically overlapped with each other, and the first mounting hole 8 and the second mounting hole 17 are overlapped and communicate with each other. At the same time, the bent pieces 7 and 10 overlap the outer surface of the end portion of the second vertical piece 15, and the first hooking protrusion 12 thereof has the first
The hooking hole 21 enters the hooking hole 21, and the hooking end face 12a is hooked and engaged with the edge of the first hooking hole 21 (see FIG. 7). Moreover, the end portion of the second inner edge piece 16 of the second frame body 3 passes between the end portion 4a of the first horizontal piece 4 and the engaging lower piece 11 of the first inner edge piece 6, and is vertically moved to them. And the cut-and-raised piece 18 overlaps with the upper surface of the end portion 4a.
a is sandwiched between the cut-and-raised piece 18 and the end portion 14a of the second horizontal piece 14 from above and below.

As described above, it is possible to simply insert the end portion of the second frame body 3 into the inner end portion of the first frame body 2 without requiring troublesome work such as screwing and caulking. The mounting frame 1 can be assembled.

The first hooking projection 12 and the first hooking hole 21
In engagement with the first hooking projection 12, the bending pieces 7 and 10 are elastically deformed so that the bending pieces 7 and 10 spread outward with the bent portion as a fulcrum.
The insertion of the frame body 3 is not hindered by the first hooking protrusions 12, and the second frame body 3 can be easily inserted.
And the first hooking protrusion 12 can be engaged with each other.

In this mounting frame 1, each frame member 2,
The movement of 3 in the longitudinal direction of the first frame member 2 means that the bending piece 7,
This is prevented by the overlap between 10 and the second vertical piece 15. The movement of the frame members 2 and 3 in the longitudinal direction of the second frame member 3 is prevented by the engagement of the first hooking protrusion 12 and the first hooking hole 21. The vertical movement of the frame members 2 and 3 means that the cut-and-raised piece 18 and the end portion 14a with respect to the end portion 4a are formed.
Is prevented by the engagement from above and below, and the engagement of the end portion 4a and the engaging tongue piece 11 with respect to the second inner edge piece 16 from above and below.

Since the frame members 1 and 2 are provided by bending the vertical pieces 5 and 15 and the inner edge pieces 6 and 16 on both side edges, respectively, the horizontal pieces 4 and 14 are less distorted. Since the end portions 4a, 14a of the horizontal pieces 4, 14 are superposed on each other and are pressed from above by the cut-and-raised pieces 18, the distortion of the mounting frame 1 can be reduced. In addition, the cut-and-raised piece 18 and the end portion 14a for the end portion 4a
By the engagement from above and below, the first and second inner edge pieces 6 and 16 having an L-shaped cross section and having a large strength are continuously engaged so that the strength of the corner portion of the mounting frame 1 is enhanced. Furthermore, it is possible to further reduce the occurrence of distortion of the mounting frame 1.

In the first frame body 2 of the mounting frame 1, socket mounting brackets 25 are respectively built. The pair of socket attachment fittings 25 are formed by integrally connecting both end portions 25a arranged corresponding to the end portion 4a with a socket attachment portion 26. The end portion 25a is the third horizontal piece 27.
The end bent portion 28 and the relay bent portion 29 form a substantially U-shape.

The third horizontal piece 26 is superposed on the lower surface of the end portion 4a, and a third mounting hole 24 is formed in the center thereof so as to communicate with the first and second mounting holes 8 and 17 so as to communicate therewith. Has been done. The end bending piece 28 is bent downward at a right angle from one end of the third horizontal piece 26, and the second vertical piece 15 is formed.
It is designed to overlap the inner surface of the end of the from the horizontal direction. The end bent piece 28 is provided with a second hook hole 30 into which the second hook projection 22 is inserted and engaged.
The hook hole 30 is formed as a square hole.

The relay bent portion 29 is a portion which is bent downward at a right angle from the other end of the third horizontal piece 27 and is integrally connected to the socket mounting portion 26. This relay bending part 2
9 is formed with a pair of fourth hooking protrusions 31 which are engaged with the horizontal portion 16b of the second inner edge piece 16. The hooking protrusion 31 has the same structure as the first hooking protrusion 12 and has a semi-conical shape having a hooking end surface. Then, the fourth hooking protrusion 31 has its hooking end face directed downward,
The tapered tip portion is provided so as to face upward.

The socket mounting portion 26 extends in the lengthwise direction of the first frame member 2, and at one side edge thereof, an intermediate bending piece 32 which vertically overlaps the inner surface of the first vertical piece 5 is bent vertically. Has been. The bent piece 32 is provided with a plurality of third hook holes 33 into which the third hook projections 13 are inserted and engaged. These hook holes 33 are formed as square holes. Reference numeral 34 is a reinforcing bending piece that is bent to the other end edge of the socket mounting portion 26 so as to face the intermediate bending piece 32.

The socket fitting 25 has its intermediate bent piece 32 attached to the inner surface of the first vertical piece 5 and the end bent piece 28 along the inner surface of the end of the second vertical piece 15 while 1 By being inserted in the frame member 2, it is mounted in the mounting frame 1.

Then, the third horizontal piece 27 overlaps the lower surface of the end 4a of the first horizontal piece 4, and the second mounting hole 2 thereof is formed.
4 overlaps with the first mounting hole 8 and is communicated. At the same time, the second hooking protrusion 22 enters into the second hooking hole 30, and its hooking end face is hooked on the hole edge of the second hooking hole 30, and
The third hooking protrusion 13 enters the third hooking hole 33, and the hooking end surface is hooked on the hole edge of the third hooking hole 30. Moreover, the fourth hooking protrusion 31 is provided on the horizontal portion 16b of the second inner edge portion 16.
It gets over and catches on this horizontal part 16b.

In this manner, the troublesome work such as screwing and caulking is not required, and the metal fitting 25 can be simply inserted into the metal fitting 25.
Can be easily attached to the attachment frame 1. And
When the attached socket fitting 25 falls off, the third hook projection 13 and the third hook hole 33 are caught,
Also, the fourth latching protrusion 31 and the second inner edge piece 16 are prevented from being caught, and the movement of the socket fitting 25 in the width direction is prevented from moving in the second latching protrusion 22 and the second latch hole 30.
And the first vertical piece 5 and the intermediate bent piece 32.
It is prevented by the engagement with.

A plurality of lamp sockets 41 are attached downward to the socket attachment portion 26 of each socket attachment fitting 25, and a plurality of screw holes (not shown) are provided in the attachment portion 26.

A reflecting plate 42 is built in the mounting frame 1 over each socket mounting portion 26, and the reflecting plate 42 is fixed via a decorative screw 43 detachably screwed into the screw hole. ing. The reflection plate 42 thus mounted from the lower surface opening side of the mounting frame 1 closes the upper surface opening of the mounting frame 1. A rod-shaped fluorescent lamp 44 is disposed below the reflection plate 42, and both ends thereof are supported by the lamp socket 41.

In FIG. 1, reference numeral 45 indicates a lighting device such as a ballast, which is housed and arranged inside the second frame 3. Further, reference numeral 46 is a cover frame which covers the lower end of the mounting frame 1 and is detachably supported in the lower end opening of the mounting frame 1, and reference numeral 47 is a cover 47 which is a semi-translucent cover. Are supported at the center of the cover frame 46.

The mounting frame 1 of the ceiling-embedded luminaire having the above-described structure is suspended by the suspension bolts 48 protruding from the ceiling slab as shown in FIG. That is, the suspension bolt 48
Lower end portions of the first to third mounting holes 8 and 1 which are communicated with each other.
7 and 24, and a nut (not shown) is screwed into the lower end portion of the mounting frame 1, and the nut is tightened until the lower end bent portions 9 and 19 of the mounting frame 1 come into contact with the edge of the ceiling mounting hole 49. As a result, the mounting frame 1 is embedded and fixed in the ceiling as shown in FIG.

In this installation, the nut contact portion is the first and second horizontal pieces 4, 1 which are vertically stacked.
4 of the end portions 4a, 14a and the third of the socket fitting 25
Since the triple wall is formed with the horizontal piece 27, the strength of the corner portion of the mounting frame 1 through which the suspension bolt 48 passes is extremely high.
Sufficient strength can be secured against the tightening force of the nut.

Therefore, the first frame member 2 and the second frame member 3
Can be made thinner. Even in that case, since sufficient strength against the tightening force of the nut can be guaranteed in the corner portion of the mounting frame 1, an inexpensive lighting fixture can be obtained.

In this lighting apparatus, the mounting frame 1 can be assembled by simple insertion work without using screws or troublesome caulking work as described above, and in the same manner. Since the socket mounting bracket 25 can be mounted on the mounting frame 1, the assembling workability can be improved.

In combination with this, since the mounting frame 1 can be firmly framed as described above, no reinforcing material is required, the number of parts can be reduced, and in addition, the first and thin plates can be formed. Since the second frame members 2 and 3 can be used, they can be manufactured at low cost.

Incidentally, in the present invention, the respective hooking projections 12, 1
3,22 and the respective locking holes 21,30,3 engaged with these
Since the relationship of 2 is relative, for example, the first hooking protrusion 12 is provided on the second vertical piece 15, and the first hooking hole 21 is provided with the bent piece 7. May be provided so as to be related to.

The end 14a of the second horizontal piece 14 of the second frame member 3 may be superposed on the upper surface of the end 4a of the first horizontal piece 4. In this case, the first inner edge piece 6 has the same length as the first horizontal piece 4, both end portions of the second inner edge piece 16 are cut out according to the width of the first horizontal piece 4, and the engaging tongue is attached to the end portion. It suffices if an engaging tongue corresponding to the piece 11 is provided, and the cut-and-raised piece 18 and the third horizontal piece 27 are used.
Is provided so as to overlap with the lower surface of the end of the first horizontal piece 4. Further, in the present invention, the inner edge pieces 6 and 16 of the frame members 2 and 3 and the fourth hooking protrusion 31 of the socket fitting 25 may be omitted.

[0045]

As described in detail above, according to the lighting apparatus of the present invention, a pair of first frame members and a pair of second frame members are used without using a fixture such as a screw or performing a troublesome caulking operation. The mounting frame can be assembled by connecting the end portion with the frame member by the engagement of the first hooking projection and the first hooking hole, and
By engaging the second and third hooking protrusions with the second and third hooking holes, without using a fixing tool or troublesome caulking work,
Since the socket mounting bracket can be connected to this mounting frame,
Assembly workability can be improved. Then, the third horizontal piece of the socket fitting and the first and second horizontal pieces of the first and second frame members form a triple wall, and the hanging bolt for hanging the mounting frame is inserted therethrough. The strength of the hanging portion can be improved, and as a result, the plate thickness of the first member and the second member can be reduced, and an inexpensive lighting fixture can be provided.

[Brief description of drawings]

FIG. 1 shows a lighting device according to an embodiment of the present invention, which is denoted by Z- in FIG.
Sectional drawing shown along the Z line.

FIG. 2 is a perspective view showing a lighting fixture according to the embodiment.

FIG. 3 is an exploded perspective view of first and second frame bodies and a socket mounting bracket provided in the lighting fixture according to the embodiment.

FIG. 4 is a perspective view showing a state in which the first and second frame bodies and the socket fitting of the lighting fixture according to the embodiment are assembled.

FIG. 5 is a perspective view showing a corner portion of the lighting fixture according to the embodiment.

FIG. 6 is an exploded perspective view showing a latching projection and a latching hole of the lighting apparatus according to the embodiment.

FIG. 7 is a cross-sectional view showing a state in which a latching projection and a latching hole of the lighting apparatus according to the embodiment are engaged with each other.

[Explanation of symbols]

1 ... Attachment frame, 2 ... 1st frame material, 3 ... 2nd frame material, 4 ... 1st
Horizontal piece, 5 ... First vertical piece, 7, 10 ... Bending piece, 8 ... First mounting hole, 12 ... First latching projection, 12a ... Latching end face,
13 ... 3rd latching protrusion, 14 ... 2nd horizontal piece, 15 ... 2nd vertical piece, 17 ... 2nd mounting hole, 18 ... Cut-and-raised piece, 21 ...
1st latching hole, 22 ... 2nd latching projection part, 24 ... 3rd mounting hole, 25 ... Socket mounting metal fitting, 26 ... Socket mounting part, 27 ... 3rd horizontal piece, 28 ... End bending piece, 30 ... second retaining hole 33, intermediate bending piece 33, third retaining hole 4,
1 ... Lamp socket, 42 ... Reflector, 44 ... Lamp.

Claims (1)

[Claims] 1. A pair of first frame members having a first horizontal piece and a first vertical piece bent downward from one side edge thereof, and the first horizontal piece and the first vertical piece having the first frame on both ends thereof. 1 Bending pieces bent toward the inner surface side of the frame member, a second horizontal piece provided with both end portions of the first horizontal piece overlapped with each other from above and below, and the second horizontal piece A pair of first and second frame members each of which has a second vertical piece that is bent downward from one side edge and has both end portions that are superposed on the bent piece in the horizontal direction, and that forms a rectangular mounting frame with the first frame member. An end of the first horizontal piece such that two frame members are cut and raised at the end of the second horizontal piece and the other end edge of the end of the first horizontal piece is sandwiched between the second frame and the second horizontal piece. A cut-and-raised piece that engages with the other end edge of the portion, the bent piece and the second vertical piece that are overlapped in the horizontal direction On the other hand, at least one first hooking protrusion that has a hooking end surface and is formed to project, and the first hooking protrusion that is provided on the other of the bending piece and the second vertical piece enters. The first engaging end surface of which engages
A hook hole, a third horizontal piece that is superposed on the lower surface of the end portion of the first horizontal piece or the second horizontal piece, and an inner surface of the second vertical piece that is bent downward from one end of the third horizontal piece. And a pair of socket mounting brackets each having both end portions having end bending pieces that are superposed from the horizontal direction, and these end portions are integrally connected by a socket mounting portion, and the first and second vertical mounting portions. An attachment hole for hanging, which is provided in each of the end portion of the second horizontal piece and the third horizontal piece and communicates with each other, and one of the second vertical piece and the end bent piece that overlap in the horizontal direction, At least one second hooking protrusion that has a hooking end surface and is formed to project, and the second hooking protrusion that is provided on the other of the second vertical piece and the end bending piece is inserted. A second hook hole with which the hook end surface is engaged, and the socket. An intermediate bending piece that is bent from the mounting portion and overlaps the inner surface of the first vertical piece in the horizontal direction, and one of the first vertical piece and the intermediate bending piece that overlap in the horizontal direction has a hooking end surface. And at least one third hooking protrusion that is formed to overhang, and the third hooking protrusion that is provided on the other of the first vertical piece and the intermediate bending piece, and the hooking end surface of the third hooking protrusion enters. A third hooking hole to be engaged, a reflector plate that covers the upper opening of the mounting frame and is mounted over the pair of socket mounting brackets, and a reflector plate that is respectively mounted on the socket mounting portion and is located below the reflector plate. And a lamp socket that supports a lamp that is installed as a lighting fixture.