JPH1027509A - Direct attachment type luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a direct attachment type luminaire which can be installed on the luminaire installing surface with an enhanced reliability by engaging pawls certainly with a hitch ceiling of the luminaire installing surface. SOLUTION: In this luminaire, a hitch ceiling receptacle 2 provided with a mounting hole 3 and a pair of pawls 4 energized in the direction of protruding into the hole and capable of being inserted into and taken out of the hole 3 is installed in the center of a flat plate chassis 1 made from sheet metal, and the pawls 4 are detained with a pawl receptacle 44 furnished on a hitch ceiling 42 installed on the apparatus installing surface to be inserted into the mounting hole 3, and thus direct attachment to the apparatus installing surface is generated. A pair of reinforcing plates 5 extending across the whole width of the chassis 1 with the receptacle 2 interposed are installed on the inner surface of chassis 1 in its central part. Each reinforcing plate 5 has a fixed piece 6 to the inner surface of the chassis 1 and a protruding piece 7 folded approx. at a right angle from the side edge of the fixed piece 6. Twist of the chassis central part is suppressed by the reinforcing plates 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct mounting type lighting apparatus such as a multi-lamp direct mounting type ceiling lighting apparatus which is directly installed on an installation surface such as a ceiling surface or another wall surface.

[0002]

2. Description of the Related Art FIG. 11 is an exploded perspective view showing the structure of a conventional multi-lamp type ceiling-mounted lighting fixture, which will be described below. In FIG. 11, reference numeral 71 denotes a sheet metal chassis, which has a rectangular flat plate shape, and its peripheral edge is bent downward. The lower surface (inner surface) of the chassis 71 is covered with a reflecting plate 72 made of sheet metal. A substantially U-shaped rising side wall 72a is formed by bending each side of the reflecting plate 72, and a side edge of the chassis 71 is overlapped on an upper flat portion of the side side 72a. Therefore, a gap 73 is formed between the chassis 71 and the reflection plate 72.

A pull switch 7 is provided on the lower surface of the chassis 71.
4. Various electric components such as a plurality of discharge lamp stabilizers 75 and a plurality of glow lamp sockets 76 are attached, and a glow lamp 77 is detachably attached to each glow lamp socket 76. The various electric components are provided in the gap 73.
It is to be accommodated in.

An end cover 78 for closing the end of the gap 73 is fitted to both ends of the reflection plate 72, and the cover 78 is fixed to the upper part of the rising wall 72 a of the reflection plate 72 by mounting screws 79. Have been.

[0005] End covers 78 are provided at both ends of the reflection plate 72.
The socket mounting brackets 80 are respectively provided at the insides of the sockets. A plurality of lamp sockets 81 are mounted on these socket mounting brackets 80. The lamp sockets 81 protrude below the reflecting plate 72 through socket through holes 82 formed at both ends of the reflecting plate 7 in the same number corresponding to the respective lamp sockets 81, and the straight tube type fluorescent lamp 101 is provided.
Is detachably supported.

The socket mounting bracket 80 includes a mounting screw 8
3 and is fixed to an end of the reflection plate 72 via a mounting screw 84. Therefore, the chassis 71 and the reflection plate 72 are mutually connected via the socket mounting bracket 80. On the lower surface of the end cover 78, a socket cover 85 that covers one side of the lamp socket is detachable by engaging a locking claw 86 formed on the cover 85 with a hook hole 87 formed on the end cover 78. Mounted on

At the center of the chassis 71, a hanging ceiling receiver 88 is mounted. This receiver 88
Has a mounting hole 89 exposed on the upper surface of the chassis 71 and a pair of hooking claws 90 protruding into the hole 89. The hook 90 is attached to the mounting hole 89 by a spring (not shown).
The catching claw 90 is urged in a direction to protrude inward, is provided so as to be able to be inserted into and removed from the mounting hole 89, and is manually operated from the lower surface side of a catch (not shown) integrated with the catching claw 90. Are moved to the outside of the mounting hole 89.

In the center of the reflecting plate 72, a working hole 91 for enabling the above-mentioned knob operation or the like is opened. Is closed. In FIG. 11, reference numeral 93 denotes a glow lamp through-hole provided in the reflection plate 72, and reference numeral 94 denotes a pull switch string. The glow lamp 77 is attached to and detached from below the reflection plate 72 through the glow lamp through hole 93. I have.

Further, reference numeral 95 in FIG. 11 denotes a hanging ceiling installed on a ceiling surface (an equipment installation surface). The sealing 95 fits into the mounting hole 89,
A claw receiving portion 96 is provided at a lower portion thereof, and a power plug 99 is provided through a cord pulled out from a lower surface of the claw receiving portion 96. The hook 90 is detachably hooked on the hook receiving portion 96, and the power plug 99 is detachably connected to a power connector 100 to which a cord is connected from a pull switch 74.

[0010] The lighting fixture having the above-described configuration includes a socket cover 8.
5. With the blocking cover 92 and the fluorescent lamp 101 removed, it is installed directly on the ceiling. This mounting operation is performed by pressing the entire device against the ceiling surface so that the mounting hole 89 can receive the ceiling 95.

[0011] Then, the claw receiving portion 96 of the hooking ceiling 95 hits the upper surface of the inclined tip portion of the pair of hooking claws 90, and pushes the claws 90 in the lateral direction to move out of the mounting hole 89 and pass therethrough. Immediately thereafter, the pair of hooking claws 90 enter the hooking grooves 95a of the hooking ceiling 95, and are thus hooked on the nail receiving portions 96 with a sense of moderation. Thereby, the lighting fixture is directly attached to the ceiling surface. Thereafter, the power supply plug 99 is connected to the power supply connector 100 in the instrument by inserting a hand into the working hole 91, and then the closing cover 92, the fluorescent lamp 101,
The mounting work is completed by mounting the socket cover 85 and the socket cover 85 in this order. The lighting fixture thus set is turned on by pulling the pull switch string 94 to turn on the pull switch 74, whereby the fluorescent lamp 10 is turned on.
1 is turned on, and the light emitted from the lamp 101 can illuminate the lower side.

When the lighting fixture is to be removed from the ceiling surface, the procedure described above may be performed in reverse order. Can be performed by moving the hooking claw 90 out of the mounting hole by the hand inserted into the instrument through the knob.

[0013]

However, as described above, in a lighting fixture using a large number of fluorescent lamps 101, the rectangular flat chassis 71 becomes large with a large area accordingly. However, in the related art, since the chassis 71 is merely bent at its peripheral edge, a twist is easily generated in the sheet metal chassis 71 due to an imbalance in arrangement of various electric components attached to the inner surface.

When such a twist occurs, the influence is exerted on the hooking ceiling receiving member 88, and the hooking claw 90 pushed by the claw receiving portion 96 of the hooking ceiling 95 in mounting the lighting fixture on the fixture installation surface is normal. In some cases, it may not be possible to obtain a sense of moderation, and it may be difficult to check whether or not the pair of hooks 90 are correctly hooked on the hooking ceiling 95. There is a problem that the reliability of mounting the device may be lacking.

Therefore, a first problem to be solved by the present invention is that the hook can be securely engaged with the hooking ceiling of the instrument installation surface, and the reliability of attachment to the instrument installation surface can be improved. It is an object of the present invention to obtain a directly-mounted lighting device that can improve the lighting efficiency.

Further, in the conventional lighting apparatus, when the reflecting plate 72 is twisted by the chassis 71 as described above, the reflecting plate 72 is also deformed and the working hole 91 is distorted. The reliability of the claw engagement of the closing cover 92 with the edge may be impaired, and the cover 92 may be accidentally detached. Moreover, in the above-mentioned conventional lighting equipment, the reflection plate 7
2 is not supported at all except the four corners,
In particular, the central portion of the reflection plate 72 is easily sticky.

Further, in the above-mentioned conventional lighting equipment, the reflector 72 naturally becomes larger in accordance with the shape of the chassis 71, but the lower surface of the reflector 72 is flat and thin as shown in FIG. It has been difficult to form the reflecting plate 72 with a large curvature.

More specifically, in order to make the large reflecting plate 72 curved, it is conceivable to press-mold the reflecting plate 72 to make it curved. However, since the reflector 72 is large, the curvature is inevitably large, and it is necessary to press-mold using a thick sheet metal that is plastically deformed so that such a curvature can maintain a large curvature. In addition, there is a problem that the cost increases. On the other hand, a thin sheet metal reflector 7
In the case of No. 2, since there is no strength for keeping the shape, the shape cannot be maintained even if a curve is formed by press molding. When the reflecting plate 72 is thin, it is difficult to give it a curved shape, and the lower surface shape of the reflecting plate 72 is restricted to a planar shape as shown in FIG.

Therefore, a second problem to be solved by the present invention is to prevent the central portion of the reflector from sticking, and to be able to provide the reflector at a low cost by bending the reflector as required. An object of the present invention is to obtain a direct mounting type lighting fixture.

Further, when connecting to and disconnecting from the power supply in the above-mentioned conventional configuration, the power supply plug 99 and the power supply connector 100 are connected or disconnected. It is necessary to work with both hands in the interior space, and in the interior space of the appliance, there is a high possibility that a part of the wiring in the appliance extending between various electric components may obstruct the connection or separation operation. Therefore, there is a problem that workability when connecting to and disconnecting from the power supply is poor. In addition, when positioning so that a part of the wiring in the instrument does not disturb the work, it is necessary to provide such a positioning member on the inner surface of the chassis 71.

Therefore, a third problem to be solved by the present invention is a direct mounting type lighting device which can easily connect to and disconnect from a power supply without requiring a special member for positioning the wiring in the device. To get the equipment.

[0022]

SUMMARY OF THE INVENTION The present invention provides a hanging ceiling receiver having a mounting hole and a plurality of hooking claws which are urged in a direction protruding into the hole and which can be inserted into and removed from the mounting hole. The tool is mounted on the inner surface of the central portion of a sheet metal plate-shaped chassis on which various electric components are mounted on the inner surface. It is assumed that the lighting fixture is a direct-attached lighting fixture that is attached to the fixture installation surface by engaging a hook.

According to a first aspect of the present invention, there is provided a pair of reinforcing plates extending substantially over the entire width of the chassis with the hanging sealing receiver interposed therebetween. Attached to the inner surface of the central portion of the chassis, these reinforcing plates are fixed pieces to the inner surface of the chassis, and a protruding piece bent at a substantially right angle from a side edge of the fixed piece,
It is characterized by having.

According to the first aspect of the present invention, since the reinforcing plate has the fixing piece and the projecting piece and is bent in an L-shape, the strength of the reinforcing plate itself is high. The plate is fixed to the inner surface of the sheet metal chassis to reinforce the chassis, particularly at the center, to prevent twisting of the chassis which is likely to occur due to the flat shape. Thereby, the influence of the twist of the chassis on the hooking sealing receiver can be suppressed.

According to a second aspect of the present invention, there is provided a sheet metal reflecting plate which is connected to a side edge of the chassis and is provided so as to cover an inner surface of the chassis. The tip edge of the protruding piece portion is brought into contact with the inner surface of the projection, and the reflector is supported by the reinforcing plate along the shape of the tip edge.

According to the second aspect of the present invention, the leading edges of the protruding pieces of the pair of reinforcing plates disposed on both sides of the hanging sealing receiver abut against the inner surface of the reflecting plate to prevent twist deformation of the reflecting plate. In addition, since the inner surface of the central portion of the reflector is supported from the inside, sticking of the central portion of the reflector is also prevented. And since the reinforcing plate supports the reflector from the inside along the shape of the tip edge of the protruding piece portion, when the tip edge is curved in the width direction of the chassis, it has a large curvature following the curvature. A reflector can be provided. In this case, the shape of the reflector can be regulated by using the free deformation of the reflector and aligning the inner surface of the reflector along the leading edge, so that the reflector can be formed of a thin sheet metal and the reflector can be made thicker. It is not necessary to apply a pressing process to keep the curved shape in advance by using the method, and therefore, the reflection plate can be obtained by an inexpensive process such as a roll forming process.

In order to solve the third problem, the invention according to claim 3 is characterized in that the projecting piece has a communication groove formed in the leading edge thereof and the various electric components are formed in the communication groove. And a power supply connector to which a power plug connected to the hooking ceiling is detachable is attached to the projecting piece.

According to the third aspect of the present invention, since the wiring inside the device is held in the communication groove provided in the projecting piece of the reinforcing plate, the projecting piece can also be used as a positioning member for the wiring inside the tool. The internal wiring is not complicated and does not hinder the connection between the power plug and the power connector in the appliance. In addition, since the power connector is attached to the protruding piece, the protruding piece can also be used as a member for supporting the power connector, and when the power plug is attached to or detached from the power connector fixed to the protruding piece, the power connector is used. The power plug can be attached to and detached from the power connector with one hand operation.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the figure, reference numeral 1
Is a thin sheet metal chassis, which has a substantially flat plate shape, for example, a rectangular shape in plan view. In the present invention, the chassis 1 is not limited to a rectangular shape in a plan view, but may be a square shape in a plan view, an elliptical shape in which both longitudinal ends are rounded in a plan view, and the like. Is a spacer protruding from the upper surface of the.

The reference numeral 1a designates a step formed in the center of the chassis 1 in the width direction and formed over the entire length of the chassis 1. This step is provided to increase the strength of the chassis 1, but is omitted. You may. In addition, such a step part 1a
In the case where is provided in the present invention, it may be formed by a protrusion projecting toward the upper surface (outer surface) of the chassis 1. A through hole 1b is formed at the center of the step 1a.

On the lower surface (inner surface) of the central portion of the chassis 1, that is, on the lower surface of the central portion in the longitudinal direction of the step portion 1a, a rectangular hanging sealing receiver 2 is screwed. The receiving device 2 has a mounting hole 3 in the center as shown in FIGS. 4 and 6 and the like, and has a pair of hooking claws 4 which can be put in and out of the hole 3. Mounting hole 3
The through-hole 1b is located right above.

The pair of hooking claws 4 are provided so as to face each other in the radial direction of the mounting hole 3, and the top surfaces of their tip portions are formed as inclined surfaces (see FIG. 10) which gradually decrease toward the tip. I have. These hooks 4 are knobs 4
a (see FIG. 4), and the tip having an inclined surface is urged by a spring (not shown) so as to protrude into the mounting hole 3. The knob 4a is exposed on the lower surface of the hanging ceiling receiver 2 and can be manually operated from below. By pushing the hook 4 against the spring via the knob 4a, the hook 4 can be moved so that the tip of the hook 4 is located outside the mounting hole 3.

A pair of reinforcing plates 5 are attached to the lower surface of the central portion of the chassis 1 with the hanging sealing receiver 2 interposed therebetween. These reinforcing plates 5 are made of a metal plate, and include a fixing piece 6 fixed to the lower surface of the chassis 1 as shown in FIG. 9 and the like, and a protruding piece bent at a right angle downward from the fixing piece 6. 7 and a cover support piece 8 bent at a right angle from the tip of the protruding piece 7. Reinforcement plate 5
Is equal to substantially the entire width of the chassis 1 in the width direction.
A concave portion 9 is formed at the center in the longitudinal direction of the upper end portion including the fixing piece portion 6 as a fitting portion fitted to the step portion 1a. When the step portion 1a is formed of a convex portion, a fitting portion formed of a convex portion may be formed instead of the concave portion.

The reinforcing plates 5 are attached to the chassis 1 so as to extend in the width direction of the chassis 1 by screwing the fixing pieces 6 overlapping the lower surface of the chassis 1 to the chassis 1. In the first embodiment, the reinforcing plate 5 is mounted on the chassis 1.
Are mounted along a direction intersecting at right angles to the longitudinal direction of the chassis 1, but they may be provided obliquely intersecting the longitudinal direction so as to extend over the entire width direction of the chassis 1. Further, the reinforcing plates 5 arranged on both sides of the hanging sealing receiver 2 as described above are attached in such a manner that the cover support pieces 8 face each other. In addition,
In these mountings, since the reinforcing plate 5 can be positioned in the width direction of the chassis 1 by fitting the concave portion 9 and the step portion 1a, the work of screwing the reinforcing plate 5 to the chassis 1 can be easily performed. it can.

The lower end edge (tip edge) 5a of the protruding piece portion 7 of the pair of reinforcing plates 5 has a linear shape, a curved shape, or the like according to the shape of a reflective plate 21 described later based on the design requirements of the lighting fixture. This first plate is used as a reflector shape regulating edge.
In the embodiment, the front end edge 5a is curved with a large curvature. Furthermore, these protruding pieces 7 include
A communication groove 10 that opens to the lower end edge 5a is formed.

A pair of communication grooves 10 are provided symmetrically with respect to one reinforcing plate 5. Thereby, the pair of reinforcing plates 5 can be formed in the same configuration, and these reinforcing plates 5 can be provided in a point-symmetrical arrangement around the hooking and sealing receiver 2, resulting in an incorrect arrangement in mounting the pair of reinforcing plates 5 to the chassis 1. The fear of is reduced.

A socket-type power connector 11 is attached to the projecting piece 7 of at least one reinforcing plate 5 with its plug insertion port facing the projecting piece 7 of the other reinforcing plate 5.

On the lower surface of the chassis 1, various electric parts, that is, the same number of discharge lamp stabilizers 12 and glow sockets 13 as the number of fluorescent lamps described later, are provided with a pair of reinforcing plates 5 interposed therebetween. Each of them is screwed, and one pull switch 14 is screwed. FIG.
In FIG. 6, reference numeral 14a denotes a pull switch string of the pull switch 14, which is pulled out to the upper surface of the chassis 1 and hangs downward through a string guide 15 so as to be operable to be pulled. A night light 16 is detachably attached to the pull switch 14. Further, a glow lamp 17 is detachably attached to each glow socket 13.

The lower surface side of the chassis 1 is covered with a thin sheet metal reflecting plate 21 having an outer surface as a reflecting surface. Reflector 21
On the upper surface of the substantially U-shaped side edge 21a provided on both sides thereof, both side edges 1c of the chassis 1 are respectively overlapped, and these side edges 1c, 21a are screwed to the side edge 21a through the side edge 1c. Are connected by a screw. Therefore, a gap is formed between the chassis 1 and the reflection plate 21, and the electric components and the like are accommodated in the gap. The side edge 1c of the chassis 1 may be overlapped with the inside of the side edge 21a of the reflector 21. In this case, the side edge 21c of the chassis 1 is not exposed to the outside and is covered by the side edge 21a of the reflector 21. Because it will be hidden
The appearance is good, and it is possible to prevent the worker from touching the side edge 1c and being damaged in handling the instrument body.

The reflecting plate 21 is curved in the width direction of the chassis 1 with its inner surfaces in contact with the lower end edges 5a of the pair of reinforcing plates 5. This bending is performed by utilizing the characteristic that the reflecting plate 21 is easily deformed because of its thin thickness, and the reflecting plate 21 is attached to the lower edge 5.
This is realized by following the curvature of a, and the holding of the curved state is performed by the projecting action of the lower end edge 5a against the reflection plate 21 and the screwing of the side edges 1c, 21a.

A plurality of socket mounting holes 22 (see FIGS. 6 and 8) are formed at both ends in the longitudinal direction of the reflection plate 21, and a plurality of claw engaging members formed of square holes are provided near these holes. Each of the holes 23 is opened. In each of the socket mounting holes 22, a lamp socket 24 which is inserted from the inner surface side of the reflection plate 21 and protrudes from the lower surface side of the reflection plate 21 is mounted. These sockets 24 have locking claws (not shown), and the claws are hooked on the hole edges of the socket mounting holes 22 to be prevented from being detached from the reflection plate 21.

A part of the in-apparatus wiring 31 provided by electrically connecting the lamp sockets 24 and the various electric parts 11 to 14 is passed through the communication groove 10 and thus connected to the communication groove 10. Wiring 31 within the instrument held at 10
Are wired without crossing a work hole 27 described later. Further, a straight tube type fluorescent lamp 32 is detachably attached to each of the lamp sockets 24 protruding from the reflection plate 21. Therefore, these lamps 32 are provided to be exposed to the outside.

The reflector 21 has a nightlight mounting hole 25,
A plurality of glow lamp mounting holes 26 are provided.
The nightlight 16 is detachably screwed into the nightlight socket of the pull switch 14 through the nightlight mounting hole 25, and the mounted nightlight 16 protrudes from the lower surface of the reflector 21. The glow lamp 17 is detachably screwed into the glow socket 13 through each glow lamp mounting hole 26, and the mounted glow lamp 17 is provided to protrude from the lower surface of the reflection plate 21.

An elliptical working hole 27 located between the pair of reinforcing plates 5 is formed in the center of the lower surface of the reflecting plate 21. The working hole 27 is large enough to allow a hand to be inserted into the gap, and the hooking sealing receiver 2 faces upward. Further, a plurality of claw engagement holes 8a are formed in the cover support piece 8 disposed so as to protrude into the working hole 27, and a plurality of claw engagement holes 8a are detachably engaged with these engagement holes 8a. The working hole 27 is closed by a closing cover 29 made of a synthetic resin having claws 28.

In the first embodiment in which the portion for holding the mounting state of the closing cover 29 is provided on the reinforcing plate 5 as described above, the pawl 28 is engaged with the edge of the working hole 27 and the closing cover 29 is engaged. Since the reinforcing plate 5 that is less likely to be deformed is used as compared with the mounting structure, the closing cover 29 can be easily attached, and even if the reflecting plate 21 is twisted, the influence of the claw engaging portion is received. Because there is little
Can be more stably mounted.

At both ends of the chassis 1 and the reflection plate 21 connected to each other, end covers 30 made of synthetic resin for closing the ends of the gaps are fitted and screwed. In this attached state, the fitting is performed so as not to cover the claw engaging hole 23. These chassis 1,
The reflection plate 21 and the end cover 30 constitute a device main body. The end cover 30 has a cap shape with one side opened, and has a recess 30a on the upper surface corresponding to the step portion 1a.

On the lower surface of both ends of the reflection plate 21, socket covers 33 made of synthetic resin are detachably mounted. The cover 33 has a plurality of engagement claws 34, and is attached to the reflection plate 21 by engaging these claws 34 with the claw engagement holes 23.

The lighting fixture having the above-described structure is assembled in the following procedure. First, the chassis 1 on which the hanging sealing receiver 2, the pair of reinforcing plates 5, the various electric components 12 to 14, and the like are mounted in advance and the reflector 21 are combined. After each of the lamp sockets 24 is inserted into these, the chassis 1 and the reflection plate 21 are screwed. Next, an end body 30 is put on both ends of the chassis 1 and the reflection plate 21 and screwed to form an instrument body, and then the cover cover piece 8 of the reinforcing plate 5 is claw-engaged to close the cover 29. To close the working hole 27 of the reflection plate 21. Finally, the nightlight 16 and the glow lamp 17 are respectively screwed and attached, and then the fluorescent lamp 32 is attached between the lamp sockets 24. Then, the socket covers 33 are attached to both ends of the reflection plate 21 by nail engagement. The assembling work is completed by the above procedure, and can be disassembled by the reverse procedure as necessary.

A hanging ceiling 42 is provided on an installation surface 41 such as a ceiling to which the lighting equipment is directly attached. As shown in FIG. 10, the sealing 42 has an annular hooking groove 43 and a claw receiving portion 44 for partitioning the same.
And a power plug 46 connected via a cord 45. The cord 45 is pulled out from the center of the lower surface of the claw receiving portion 44, and is connected to an F cable (not shown) that is drawn from behind the ceiling in the hanging ceiling 42. The power plug 46 is detachably connected to the power connector 11.

The lighting fixture is placed on the fixture installation surface 4 by the following procedure.
It is directly attached to 1. First, the closing cover 29 is removed from the assembled device main body, and at least the plurality of fluorescent lamps 32 and the socket cover 33 which hinder the removal of the closing cover 29 are also removed. In this state, the tool main body is pushed up so that the through hole 1b of the tool main body is hooked to the ceiling 42 and hits the tool installation surface 41.

Then, the hanging ceiling 4 is inserted into the mounting hole 3 of the hanging sealing receiver 2 communicating with the through hole 1b.
With the insertion of the hook 2, the claw receiving portion 44, which is the distal end of the sealing 42, comes into contact with the inclined surfaces of the pair of hooking claws 4 and pushes them. Is pushed out of the mounting hole 3 against a spring (not shown) biasing the spring, and the claw receiving portion 44 passes over the pair of hooking claws 4 downward. Therefore, immediately after passing, the pair of hooking claws 4 rapidly project into the mounting hole 3 by the spring force and enter the hooking groove 43, and are hooked on the claw receiving portion 44 with a sense of moderation. Therefore, the device main body is hooked on the hooking ceiling 42 and is directly attached to the device installation surface 41 and supported.

Next, a hand is inserted between the pair of reinforcing plates 5 through the working holes 27, and the power plug 46 inserted between the pair of reinforcing plates 5 by the above mounting is connected to the power connector facing the reinforcing plates 5. 11 and connect the power supply.

Finally, after closing the working hole 27 of the reflector 21 with the closing cover 29, all the fluorescent lamps 32
After mounting, the socket cover 33 is mounted.

The lighting fixture can be attached to the fixture installation surface 41 by the above procedure, and the lighting fixture can be removed from the fixture installation surface 41 by the reverse procedure. However, in order to remove the pair of hooking claws 4 from the claw receiving portion 44, the knob 4a of the hooking claw 4 is operated with the hand inserted into the work hole 27, and the hooking claw 4 urges it. It may be performed by horizontally moving the mounting hole 3 against the spring (not shown).

Incidentally, the chassis 1 of the appliance body having the above-described configuration has a large flat plate structure, and is twisted due to an imbalance in arrangement of the various electric components 12 to 14 attached to the lower surface thereof. Although it is easy, the chassis 1 is secured by a pair of reinforcing plates 5 fixed to the lower surface thereof.
, In particular, the central portion can be reinforced to prevent the chassis 1 from being twisted. In addition, the reinforcing plate 5 includes the fixing piece 6 and the protruding piece 7.
And is bent in an L-shape, and therefore has high strength of itself. In particular, in the first embodiment, the chassis 1 has the step portion 1a, the reinforcing plate 5 has the concave portion 9, and these are fitted and combined. large.

Therefore, the hanging ceiling receiver 42
The effect of the torsion of the chassis 1 on the device 1 is suppressed, and the ceiling 4
Since the hook 4 depressed by the second hook receiver 44 can be reliably and normally returned, it is possible to easily know a sense of moderation when the hook 4 is hooked on the hook receiver 44 in mounting the device. it can. Thereby, it is possible to easily confirm whether or not the pair of hooks 4 are hooked correctly on the hooking ceiling 42, so that the mounting reliability of the device on the device mounting surface 41 can be improved.

In the luminaire having the above-described structure, the leading edge 5a of the projecting piece 7 of the pair of reinforcing plates 5 arranged on both sides of the hanging ceiling receiver 2 is attached to the inner surface of the central portion of the reflecting plate 21 from inside. Since the reflector 21 is supported in contact with the reflector 21, twisting deformation of the reflector 21 can be prevented, and the reflector 2 can be prevented.
1 can also prevent sticking at the center.

Further, the leading edge 5 of the projecting piece 7 of the reinforcing plate 5
Since the shape of the reflecting plate 21 can be defined by the shape of a, when the tip edge 5a is curved in the width direction of the chassis 21 as in the first embodiment, the reflection is performed with a large curvature following the curvature. A plate 21 can be provided.

Moreover, in this case, the shape of the reflecting plate 21 is regulated by using the free deformation of the reflecting plate 21 and making the inner surface thereof conform to the front edge 5a.
Can be formed by a thin sheet metal, and it is not necessary to increase the thickness of the reflection plate 21 and apply a pressing process to maintain a curved shape in advance. Therefore, the reflection plate 21 can be obtained by inexpensive processing such as roll forming. Therefore, the cost of the lighting fixture can be reduced.

In the luminaire having the above-described structure, the through-grooves 10 are provided in the protruding pieces 7 of the pair of reinforcing plates 5 that define the reinforcement of the chassis 1 and the shape of the reflecting plate 21 as described above. Since the internal wiring 31 is passed therethrough, the reinforcing plate 5 can be used as a positioning member for the internal wiring 31. For this reason, it is possible to arrange the in-appliance wiring 31 neatly in the apparatus main body without specially requiring a positioning member for the in-appliance wiring 31 so that the in-appliance wiring 31 does not disturb the manual operation in the apparatus main body.

In addition, since the power supply connector 11 is fixed to the protruding piece 7 of the reinforcing plate 5, it is necessary to grasp the power supply connector 11 by hand when connecting and disconnecting the power supply in the instrument body. Since the power plug 46 is not provided, the power plug 46 can be attached to and detached from the power connector 11 by one-handed operation, and the workability can be improved.

Therefore, the connection to the power source and the disconnection thereof can be easily performed without requiring a special member for positioning the in-apparatus wiring 31.

Further, in the lighting fixture according to the first embodiment, since the work space between the pair of reinforcement plates 5 and the space inside the fixture outside the work space are separated by the reinforcement plates 5, the outer fixtures are separated. This eliminates the risk of the hand accidentally touching the electric components housed in the inner space, and ensures operational safety.

[0064]

The present invention is embodied in the form described above and has the following effects.

According to the first aspect of the present invention, the plate-shaped sheet metal chassis is reinforced by the strong reinforcing plate having the fixing piece and the protruding piece, particularly at the central portion. Therefore, twisting of the chassis, which is likely to occur, is prevented, and the influence of the twisting of the chassis on the hanging sealing receiver attached to the central portion is suppressed. The hooking claws can be reliably engaged, and the reliability of attachment to the instrument installation surface can be improved.

According to the second aspect of the present invention, the front end edges of the projecting pieces of the pair of reinforcing plates are brought into contact with the inner surface of the reflector to prevent the reflector from being twisted and deformed, thereby preventing the inner surface of the reflector from being twisted. Since it is supported from the inside, it is possible to prevent sticking at the center of the reflector. In addition, when the leading edge of the protruding piece is curved in the width direction of the chassis, the reflector can be provided with a large curvature following the curvature, and the reflector can be roll-formed using a thin sheet metal. And can be provided at low cost.

According to the third aspect of the present invention, the projecting piece of the reinforcing plate can be used also as a positioning member for the wiring in the instrument, and the power supply connector is fixed to the projecting piece so that it is not necessary to grip the connector by hand. Since the power plug can be attached to and detached from the power connector by one-handed operation, connection to and disconnection from the power source can be easily performed without the need for a special member for positioning the wiring in the instrument.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entire configuration of a multi-lamp direct-mounted ceiling lighting device according to a first embodiment of the present invention, as viewed from below.

FIG. 2 is a perspective view showing the configuration of the entire lighting fixture according to the first embodiment as viewed from above.

FIG. 3 is a perspective view showing the entire configuration of the lighting apparatus according to the first embodiment, viewed from below, with a closing cover and some fluorescent lamps separated;

FIG. 4 is an enlarged perspective view showing a Z part in FIG. 3;

FIG. 5A is a plan view showing the configuration of the entire lighting fixture according to the first embodiment. FIG. 2B is a front view illustrating the configuration of the entire lighting fixture according to the first embodiment. FIG. 2C is a side view showing the configuration of the entire lighting fixture according to the first embodiment.

FIG. 6 is an exemplary exploded perspective view showing the configuration of the entire lighting fixture according to the first embodiment;

FIG. 7 is a sectional view taken along line YY in FIG.

FIG. 8 is a sectional view taken along line XX in FIG.

FIG. 9 is an exemplary perspective view showing a configuration of a hanging ceiling receiver and a pair of reinforcing plates provided in the lighting apparatus according to the first embodiment;

FIG. 10 is a view schematically showing a state in which a hanging ceiling receiver provided in the lighting apparatus according to the first embodiment is hooked on a hanging ceiling of a ceiling.

FIG. 11 is an exploded perspective view showing the entire configuration of a conventional multi-lamp direct-mounted ceiling lighting fixture.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Chassis, 1c ... Chassis side edge, 2 ... Hook sealing receiver, 3 ... Mounting hole, 4 ... Hook claw, 5 ... Reinforcement plate, 5a ... Lower end edge (tip edge) of reinforcement plate, 6 ... Fixed 1 part, 7 projecting piece part, 10 communication line groove, 11 power connector, 12 discharge lamp stabilizer (electric part), 13 glow socket (electric part), 14 pull switch (electric part), 21 ... Reflector, 21a ... Side edge of reflector, 31 ... Wiring inside the instrument, 41 ... Installation surface, 42 ... Hook sealing, 43 ... Hook groove, 44 ... Claw receiving part, 45 ... Cord, 46 ... Power plug .

Claims (3)

[Claims] 1. A hanging ceiling receiver having a mounting hole and a plurality of hooking claws which are urged in a direction protruding into the hole and which can be inserted into and removed from the mounting hole. Attaching the hooking claw to a hook receiving portion provided with a hooking ceiling provided on a mounting surface of the sheet metal plate-shaped chassis to which parts are attached and fitted into the mounting hole installed on the instrument installation surface, In a direct-attached lighting fixture attached to the fixture installation surface, a pair of reinforcing plates extending over substantially the entire width direction of the chassis with the hooked ceiling receiver interposed therebetween are attached to an inner surface of a central portion of the chassis. Wherein the reinforcing plate has a fixed piece to the inner surface of the chassis and a protruding piece bent at a substantially right angle from a side edge of the fixed piece. . 2. A reflector made of sheet metal connected to a side edge of the chassis and provided so as to cover an inner surface of the chassis, wherein a tip edge of the protruding piece portion is brought into contact with the inner surface of the reflector, and The lighting device according to claim 1, wherein the reflector is supported by the reinforcing plate along the edge shape. 3. A protruding piece portion having a communication groove formed at an end edge thereof, wherein a wiring in an instrument connected to the various electric components is passed through the communication groove, and the protruding piece portion is provided with a wire. The direct-attached lighting device according to claim 1 or 2, wherein a power plug connected to the hooking ceiling has a detachable power connector.