JP2004022442A - Recessed ceiling light fixture - Google Patents

Abstract

A ceiling-mounted lighting device capable of efficiently performing maintenance work such as lamp replacement is provided.
A locking member for stably maintaining a maintenance work state is provided. For this reason, even in the case of an unexpected operation during the operation, the user does not stay at the position in the normal state. Therefore, the worker can concentrate and efficiently perform the maintenance work.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a ceiling-mounted lighting fixture that is provided in a space above a ceiling and enables maintenance from the space above the ceiling.
[0002]
[Prior art]
Usually, maintenance work such as replacing lamps of lighting equipment used in a room with a high ceiling, a clean room, or the like is performed at a high place because the ceiling is high. In addition, since the work is performed above various types of manufacturing equipment that is installed in a clean room and requires cleanliness, it is necessary to perform the work using an auto lifter or the like in order to avoid such equipment. In addition, there is a problem that a clean environment in a clean room is spoiled due to dust falling due to lamp replacement work.
[0003]
Therefore, a lighting fixture in consideration of the above circumstances and a maintenance method thereof are disclosed in JP-A-2002-106196.
This lighting fixture is a ceiling-mounted lighting fixture that is provided in a space above the ceiling and enables maintenance from the space above the ceiling.
The movable side main body movably provided to perform maintenance of this lighting fixture can open and close one end to a fixed side main body connected to a hanging member which suspends this lighting fixture. It is attached so as to be rotatable by a hinge which is a one-sided connecting means. For this reason, the movable side main body is held in a horizontal state with the lamp facing downward in a normal state (during use), but at the time of maintenance, the movable side main body is rotated to a horizontal posture. Can be
[0004]
As described above, since the lighting device is housed in the space above the ceiling of the clean room, maintenance such as lamp replacement work can be performed in the space above the ceiling using the work scaffold provided in the space. . Therefore, it is no longer work at height. At that time, the movable side main body can be turned sideways, so that maintenance can be performed relatively easily even in a narrow space behind the ceiling.
[0005]
[Problems to be solved by the invention]
However, in this conventional lighting fixture, the movable side main body can be set to the upright posture when performing maintenance work, but the movable side main body is held by the balance of the center of gravity position. It had been in the state. Therefore, the operator may need to pay attention so that the movable body does not fall down even during the maintenance, because there is a possibility that the operator may fall into the position of the normal state (at the time of use) depending on an unexpected operation during the operation.
[0006]
[Means for Solving the Problems]
The present invention has been made to solve the above problems.
That is, in a ceiling-mounted lighting device that is provided in an under-the-ceiling space and enables maintenance from the under-the-ceiling space, maintenance is performed on the fixed-side main body suspended by the hanging member and the ceiling-mounted lighting device. A movable-side main body movably provided with respect to the fixed-side main body, wherein the movable-side main body can be opened and closed in a single-sided manner with respect to the fixed-side main body. A locking member connected to the fixed-side main body, and for holding a position where the movable-side main body is switched from a normal state to a working state during the maintenance, the locking member includes: It is characterized in that the movable side main body can be held by being locked to a suspension member.
[0007]
According to the present invention, the state of the maintenance work can be stably maintained by the locking member, so that the movable side main body is not held only by the balance of the position of the center of gravity, so that the work is unexpectedly performed. Even if you perform a simple operation, you will not be able to fall into the normal position.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a ceiling-mounted lighting device 1 according to an embodiment of the present invention, and FIG. 2 is a plan view of the ceiling-mounted lighting device 1 as viewed from a ceiling structural material 106 side (upper side). 3 is a partially detailed view of FIG. 2, FIG. 4 is an explanatory view for explaining the operation of the ceiling-mounted lighting fixture 1, FIG. 5 is a partially detailed view of FIG. 4, FIG. FIG. 7 is an explanatory diagram of an installation state of the ceiling-mounted lighting fixture 1.
[0009]
First, the ceiling-mounted lighting fixture 1 is provided in a space 103 above the ceiling of a clean room 101 as shown in FIG. Usually, a plurality of ceiling-mounted lighting fixtures 1 are provided in the clean room 101.
As shown in FIGS. 1 and 2, the ceiling-mounted lighting device 1 includes a fixed-side main body 2 and a movable-side main body 3.
[0010]
The fixed-side main body 2 is formed by processing a sheet metal and is formed in a box shape in which upper and lower surfaces of a rectangular parallelepiped are opened. In addition, the outer periphery is formed in a frame shape on the upper side of the opening surface so that the movable side body 3 described later can be mounted thereon. A lower portion of the opening surface is formed with a flange portion 33 having a U-shaped cross section facing outward.
The four corners of the fixed body 2 are supported by suspension bolts 9 suspended from the ceiling structural member 106. The lower ends of the suspension bolts 9 are directly connected to the mounting holes at the four corners of the fixed body 2 via the suspension bolt connection reinforcing plate 8 using the connection nuts 10. A frame 29 is connected to the lower opening surface of the fixed side main body 2 by using a mounting spring 7. The tempered glass 5 for transmitting the illumination light into the clean room 101 is inserted into the frame 29 via the packing 6.
A packing 32 is fitted on the outer periphery of the frame 29, and the upper surface of the packing 32 is in contact with the ceiling surface 102. Further, a packing 34 is fitted on the upper surface of the U-shaped portion of the lower flange portion 33 on the fixed side main body 2. With this configuration, when the connection nut 10 of the fixed-side main body 2 is tightened, the whole of the fixed-side main body 2 moves in a direction approaching the structural member 106 above the ceiling. At this time, the packings 32 and 34 are pressed against the ceiling surface 102. In addition, since the frame 29 is supported by the spring action of the mounting spring 7, the tempered glass 5 does not receive an unnecessarily large load, and a sealing structure with the packings 32 and 34 for the ceiling surface is realized.
[0011]
On the other hand, a lighting fixture 11 is provided inside the movable side main body 3. Since the lighting fixture 11 has a known structure, only its outline will be briefly described. As the lamp 16, for example, a fluorescent lamp is used. Two lamps 16 are provided, and both ends are connected to each socket 12. The socket 12 is of a rotary type, and a pair of sockets with and without a spring is used. The socket 12 is fixed to the inside of the movable body 3 via a socket base 13. The socket base 13 is connected to the electronic ballast 14, the power supply terminal 15, and the like, and is wired by electric wiring (not shown).
[0012]
The movable side main body 3 is formed by processing a sheet metal and is formed in a box shape in which a lower surface of a rectangular parallelepiped is opened. The size projected on the plane is slightly smaller than the fixed side main body 2 and is arranged so as to cover the upper opening of the fixed side main body 2.
One side in the longitudinal direction of the movable-side main body 3 is attached to the fixed-side main body 2 by a hinge 4. The hinge 4 is a one-way connecting means for opening and closing the hinge. A handle 17 used for this opening / closing operation is provided on the upper surface of the movable body 3. The handle 17 is formed by bending a metal round bar into an inverted U shape so that it can be grasped by hand. Male threads are machined at both ends of the handle 17, and each of the both ends is attached to the upper surface of the movable body 3 from the back side by a nut 18 via a reinforcing plate 19.
[0013]
In addition, the movable body 3 is provided with a flange 31 formed by being turned outward on the side facing the hinge 4. The fixed-side main body 2 is fixed to the movable-side main body 3 by using a flange 31 as follows. As shown in an enlarged view in FIG. 6, first, the fixing bolt 22 is passed through the mounting hole of the collar portion 31 from inside the fixed side main body 3. Next, the upper surface of the collar portion 31 is fastened by the fixing wing nut 20. The fixing bolt 22 is fixed in advance from the inside of the fixed side main body 2 with an adhesive. The fixing wing nut 20 is provided with a connecting string mounting hole 21. One of the connecting strings 30 is connected to the connecting string mounting hole 21, and the other is connected to the handle 17. That is, the fixing bolt 22 is connected to the fixed-side main body 2 of the ceiling-mounted lighting device 1, and the fixing wing nut 20 is connected to the movable-side main body 3. In this embodiment, the fixing means is provided at three locations in the longitudinal direction.
[0014]
A stopper bar 23 made of a substantially rectangular sheet metal is provided at both ends in the longitudinal direction of the upper surface of the movable body 3. The stopper bar 23 is a locking member for stably maintaining a maintenance work state.
The stopper bar 23 is assembled as follows using a stopper bar mounting bolt 24. First, a stopper bar mounting bolt 24 is passed through a mounting hole formed at one end of the stopper bar 23 from above, and is fixed from above by a stopper bar mounting nut 25 above.
[0015]
Next, the disc spring washer 26 and the washer 27 are passed through the stopper bar mounting bolt 24, and the tip of the stopper bar mounting bolt 24 in this state is inserted into the mounting hole opened in the movable side main body 3, and the upper surface of the movable side main body 3 Insert from the side.
Finally, the entirety of the movable-side main body 3 is fixed from the back side with the stopper bar mounting nut lower part 28 (see FIG. 5). However, the tightening force at this time is adjusted to such an extent that the elastic action of the disc spring washer 26 works. By assembling in this manner, since the stopper bar 23 is interposed via the disc spring washer 26 which is an elastic member in the middle, the position does not move when no external force is applied, but when the operator operates by hand, , Can be rotated about the stopper bar mounting bolt 24 as an axis.
[0016]
Next, a maintenance operation of the ceiling-mounted lighting device 1 will be described with reference to FIGS.
For example, the replacement work (maintenance work) of the lamp 16 is performed according to the following procedure.
The worker 40 works, for example, from the right side of the lighting device body 1 as shown in FIG.
[0017]
First, the fixing wing nuts 20 (three places) fixing the movable side main body 3 are removed. At this time, since the fixing wing nut 20 is connected to the handle 17 by the connecting string 30, there is no fear of dropping or losing even if it is removed. Next, holding the handle 17 by hand, the movable body 3 is pulled up about the hinge 4 (see FIG. 4). Here, since there are two handles 17, even a heavy lighting fixture can be easily operated. Next, the end portion 3 a of the connecting surface between the movable body 3 and the hinge 4 is rotated to a position where it comes into contact with the upper surface of the fixed body 2. The state in which the end 3a is in contact with the upper surface of the fixed body 2 is the working state.
[0018]
Next, this working state is held using the stopper bar 23. That is, as shown in FIG. 3, the stopper bar 23 is manually rotated from the open / close position 23a to the locking position 23b. At this time, the length of the stopper bar 23 is a necessary and sufficient length for engaging with the suspension bolt 9. Therefore, the stopper bar 23 locks the suspension bolt 9 from the back side (the side opposite to the worker), and can hold the movable-side main body 3 (see FIG. 5). With the above operations, the maintenance operation state is maintained. The position where the stopper bar 23 is locked by the action of the disc spring washer 26 is stable. Therefore, the worker can perform maintenance work such as replacement work of the lamp 16 with ease. Moreover, since the suspension bolt 9 normally used is used as the member to be locked, there is no need to provide any special parts other than the stopper bar 23, so that there is an advantage that the cost can be reduced.
[0019]
Then, after the maintenance work is completed, the state is returned to the normal state (used state) again, but the operation is performed in the reverse procedure of the above-described work.
Note that the present invention is not limited to the above-described embodiment. For example, a fluorescent lamp is used for illumination, but other lamps such as a mercury lamp, a metal halide lamp, and a halogen bulb may be used.
[0020]
Further, the handle 17 used for opening and closing the movable side main body 3 may be a sheet metal, or may be capable of being gripped by hanging a band or the like. In the embodiment, two positions are provided, but the present invention is not limited to this.
As the means for fixing the movable side main body 3 to the fixed side main body 2, a wing nut 20 for fixing and a bolt 22 for fixing are used, but a crescent lock or the like can also be used. In the embodiment, three positions are provided, but the present invention is not limited to this. Further, the fixing wing nut 20 is connected to the movable side main body 3 by the connecting string 30, but the device for preventing loss is not limited to the configuration using the connecting string. If the price of the nut can be made extremely low as compared with the cost for preventing loss of the connecting string or the like, the device itself for preventing loss may be omitted.
[0021]
In addition, although the stopper member of the present invention uses the stopper bar 23, it is sufficient if the stopper member 23 can be engaged with the suspension bolt 9, which is a member to be locked, for example, using a hook-shaped wire. May be.
[0022]
【The invention's effect】
As described above, according to the ceiling-mounted lighting device of the present invention, since the locking member for stably maintaining the maintenance work state is provided, the positional relationship with the movable-side main body is determined only by the position of the center of gravity. Since it is not in the state of being held, even if an unexpected operation is performed during operation, it is not possible to fall to the position of the normal state. Therefore, the worker can concentrate and efficiently perform the maintenance work. Moreover, since the suspension bolt is used as the locked member, there is an advantage that the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a front view of a ceiling-mounted lighting device 1 according to an embodiment of the present invention.
FIG. 2 is a plan view of the ceiling-mounted lighting fixture 1;
FIG. 3 is a partial detailed view of FIG. 2;
FIG. 4 is an explanatory diagram illustrating an operation of the ceiling-mounted lighting fixture 1.
FIG. 5 is a partial detailed view of FIG. 4;
FIG. 6 is an explanatory view in which a portion of a fixing means of the ceiling-mounted lighting device 1 is enlarged.
FIG. 7 is an explanatory view of an installation state of the ceiling-mounted lighting fixture 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Ceiling recessed lighting fixture 2 ... Fixed side main body 3 ... Movable side main body 4 ... Hinge (single-opening connection means)
5 Tempered glass 6 Packing 7 Mounting spring 8 Hanging bolt connection reinforcing plate 9 Hanging bolt 11 Lighting fixture 16 Lamp 20・ Wing nut for fixing 23 ・ ・ ・ Stopper bar (locking member)
101 ... clean room 102 ... ceiling surface 103 ... ceiling space 106 ... ceiling structure material

Claims (1)

In ceiling-mounted lighting fixtures that are deployed in the ceiling space and enable maintenance from the ceiling space,
A fixed-side main body suspended by a hanging member, and a movable-side main body movably provided with respect to the fixed-side main body for performing maintenance of the ceiling-mounted lighting device,
The movable-side main body is connected to the fixed-side main body by one-sided connecting means for allowing the movable body to be opened and closed in a single-sided manner with respect to the fixed-side main body, and the movable-side main body is in a normal state during the maintenance. With a locking member to hold the position switched from to the working state,
The ceiling-embedded lighting fixture, wherein the locking member is capable of holding the movable-side main body by locking to the hanging member.

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