JPH0731927B2 - lighting equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a lighting fixture that is installed on a ceiling together with a ceiling panel.

(Prior Art) In offices of middle- and high-rise buildings, rail members having a T-shaped cross section and a H-shaped cross section are installed side by side on the ceiling side to lay a ceiling panel.

In such a ceiling panel, a lighting fixture embedded in a part of the ceiling panel is used. This luminaire typically
Conventionally, as shown in FIG. 9, a rectangular instrument mounting space b is formed between a pair of rail members a and a having a T-shaped cross section (only one is shown). Then, a rectangular chassis c in which an electric box (a lighting device such as a ballast is incorporated) and a lamp socket are mounted is carried in through the opening of the equipment mounting space b, and is integrated into both sides of the chassis c. The engaging portions e at the tips of the plates d (supporting legs) protruding from the rails are engaged with the heads of the rail members a and a, respectively. Then, a socket cover f, a reflector g, a fluorescent lamp (not shown), etc. are attached to the chassis c thus placed between the rail members a, a (mounting space b) to assemble the instrument body. .

By the way, in recent years, in offices and the like, due to the introduction of OA equipment having a CRT, OA has been adopted, various lighting fixtures have been adopted according to the purpose. Specifically, as shown in FIG. 10 and FIG. 11, various accessory parts h such as louvers and baffles are attached to the lower surface opening of the reflector g to prevent reflection on the OA equipment and to prevent office reflection. For example, the brightness and illuminance of lighting fixtures located according to the layout are appropriately changed.

By the way, the accessory parts h have different thicknesses and the like depending on their applications.

However, the plate d of the conventional lighting fixture is
When such an accessory part h is added from the situation shown in FIG. 9, for example, the accessory part h is installed between the ceiling surface and the fluorescent lamp. As shown in FIGS. 10 and 11, it is inevitable to replace the chassis c with a plate d having a height suitable for it, and a change corresponding to the purpose of the chassis height H leads to an increase in equipment cost. It was

Therefore, recently, as shown in FIG. 12, a supporting leg j slidable in the vertical direction is provided on the side portion of the chassis c.
The structure is such that two points, that is, the lowest position and the highest position of the support leg j are fixed by using the screw member k, and the chassis height H is adjusted to each position of the state shown by the solid line and the state shown by the chain double-dashed line. Something that can be done is proposed.

(Problems to be solved by the invention) However, a lighting fixture having such a height adjusting structure has two problems.
It was only possible to change the chassis height in steps.

The present invention has been made in view of such a problem, and an object thereof is to provide a lighting fixture capable of easily changing a number of chassis heights with a single component.

(Means and Actions for Solving Problems) This luminaire is a supporting leg composed of a polygonal plate on which side portions of a chassis are provided with locking pieces that can be locked with rail portions on at least three sides. Is provided, and the pivot point of the support leg is set at a position at a different distance from each locking piece, and one of the convex portion and the fitting portion that is concave-convex fitted to this is provided on the outer surface of the support leg. Positioning means is provided corresponding to each side of the rectangular plate and the other side is provided on the side of the chassis, and the desired locking piece is selected by turning the support leg The height of the chassis can be adjusted a lot by a simple operation such as positioning the locking piece at a predetermined position and mounting the selected locking piece on the rail portion that constitutes the equipment mounting space.

(Embodiment) The present invention will be described below based on an embodiment shown in FIGS. 1 to 8. FIG. 3 shows a system ceiling lighting fixture, and 1 is a rectangular fixture mounting space configured by arranging a pair of T-shaped rail members 2, 2 on the ceiling side of a building together with a ceiling panel (not shown). .

Reference numeral 3 is a chassis of the lighting equipment. Chassis 3
In advance, two flat frames having a substantially U-shaped cross section corresponding to the rail width are arranged inwardly facing each other, and the front and rear ends of these frames are open downwards. It has a structure in which the connection plates 5 and 6 having a shape are connected. For details, connect the connecting plates 5,6 to the front and rear ends of the frames 4,4.
It is done to cover and attach. The tip ends of the left and right walls of the connecting plates 5 and 6 project downward from the lower surface of the frame 4. And each of these connecting plates 5, 6
The lamp sockets 7 and 8 are attached to the lower surface of the plate exposed between the frames 4 and 4 so as to face each other, and a fluorescent lamp (not shown) is provided between each pair of lamp sockets 7 and 7 and 8. It has a structure that can be installed.

In the space adjacent to the end of the connecting plate 6 on the wide side of the chassis 3, an electric box 9 having a lighting device 9a such as a ballast is mounted, and the lamp sockets 7, 8 are arranged in parallel.
In addition to installing a substantially trapezoidal socket cover 10 on the front surface of each of the above, by installing a reflector 11 having a substantially U-shaped cross-section across the frames 4 and 4, the structure of the instrument body 12 is configured. . The set structure of the socket cover 10 is shown in FIG. 4, and the mounting structure of the electric box 9 is shown in FIG.

Here, the set structure of the socket cover 10 will be described. In this, a J-shaped hook portion 13 is formed at the tip on the lower surface portion of the connecting plates 7 and 8 on both sides of the lamp sockets 7 and 8. The hook plates 14 are provided so as to project. The tip of the hook plate 14 is positioned at a position protruding from the front surface of the lamp socket 7, 8 to the front surface side. The socket cover 1 corresponds to the position of each of these hooks 13, 13.
A structure is used in which rectangular protrusions 16 each having a slit hole 15 are integrally provided at the upper end of 0, and the slits 15 are inserted into the hook portions 13 of the hook plate 14 to hook the protrusions 16 respectively. Thus, the plate surface of the socket cover 10 can be arranged on the front surfaces of the lamp sockets 7 and 8. In other words, after arranging the chassis 3 on the rail members 2 and 2, by hooking the projecting piece 16 on the hook portion 13, the socket cover 10 can be properly arranged between the rail members 12 and 2. ing. After the socket cover 10 is temporarily fixed, the front and rear ends of the reflection plate 11 are fixed to the stepped mounting seats 21 provided on the connection plates 5 and 6 with fixing screws 21a. Is fixed. Incidentally, 10a is an installation seat for the socket cover 10.

The mounting structure of the electric box 9 will be described. Reference numeral 17 is a box main body having an opening on the lower surface which houses the lighting device 9a. The box body 17 has, for example, a length 1 in the left-right direction in the frame 4,
What is allowed between the inner and outer dimensions of 4 is used. Then, a flange portion 18 protruding outward in the horizontal direction is provided at the tip of the side wall 17a corresponding to the inside of the chassis of the box main body 17, and cut grooves are provided in the upper wall portions of the frames 4, 4 in which the side wall 17a is arranged. 19 is provided, and the franzi section 18
Can be freely inserted into the cut grooves 19, 19. That is, by inserting the flange portion 18 into the cut groove 19, and then rotating the box body 17 toward the chassis end side with the base end (corner) of the flange portion 18 as a fulcrum, the entire box body is placed on the chassis 3. It has a structure that can be placed.

An extension 20 extending downward is formed at the tip of the side wall 17b of the box body 17 outside the chassis, and a U-shaped protrusion 22 is integrally formed on the outer surface of the extension 20. By pushing the convex portion 22 into the notch 23 provided in the mounting seat 21 and locking the tip end to the notch end of the notch 23, the upper portion of the chassis 3 placed by the insertion and rotation is inserted. It has a structure that can fix the box body 17 of. For more details,
22 is a box body with a part of the distal end of the extension portion (the central portion in this embodiment)
A notch is formed up to a point corresponding to the opening end (another side wall end) of 17, and a flange portion 22a having an arcuate cross-section protruding outward is integrally provided at the opening end, and the collar portion 22a is formed by pushing.
By locking the upper end of the lamp to the end face of the connecting plate 5, the opening side of the electric box 9 and the lamp sockets 7, 8 of the connecting plate 5
The electrical box 9 is fixed on the chassis 3 while communicating with the part to which the electric box is attached through the notch 23.
In other words, it has a structure in which wiring can be performed in the shortest path that passes through the cutout portion 23. Reference numeral 24 is a cap screw for pressing the flange portion 18 against the chassis 3 in order to firmly fix the electric box 9.

Then, at four points on the front and rear ends of the chassis 3 to which such components are attached, there are provided support legs 25 capable of height adjustment, which are essential parts of the present invention. The supporting legs 25 are rotatably provided in parallel with the plates 5 and 6 on the respective projecting portions 5a and 6a of the connecting plates 5 and 6 which project downward from the lower surface of the frame 4. This structure is shown in FIGS.
As shown in the figure. However, in both figures, the connection plate 5 side is shown, but the structure is the same.

Explaining the support leg structure, the support leg 25 has a structure using, for example, a rectangular plate member 26 (corresponding to a polygonal plate of the present invention). Specifically, the support leg 25 is a plate member 26 3
Locking pieces 28a to 28c having an L-shaped cross section which are respectively engageable with the upper portion of the rail member 2 are provided integrally on the sides in the same direction. Then, on the plate surface of the plate member 27, a hole portion 29 serving as a turning point is provided at a point where the distance from each of the locking pieces 28a to 28c is different. Specifically, in this embodiment, for example, in the support leg 25 shown in FIG. 2, the distance from the upper locking piece 18a is "A" and the distance from the left locking piece 18b is "B". And the distance from the lower locking piece 18c is "C", the hole 29 is set in the plate surface portion of the plate member 26 that establishes the relationship "A>B>C". .

Further, a slit 30 is provided from the tip toward the frame 4 on the protruding portion 5a of the connecting plate 5 on which the support leg 25 is arranged. A set screw 31 is inserted from the inside through the base of the slit 30 so as to be able to move back and forth. And, the tip of the set screw 31 that passes through this slit 30,
For example, it is rotatably connected to the hole 29 of the support leg 25 from the convex side, and the locking piece 28a to 28c of the support leg 25 is rotated to a desired locking piece by rotating the set screw 31 on the fixed side or the loose side. Can be selected and placed at a lower position. Then, the height H of the chassis can be adjusted to three levels. That is, the highest chassis height H can be achieved by arranging the locking piece 28a downward, the lowest chassis height H can be achieved by arranging the locking piece 28c downward, and the middle chassis height H can be obtained by arranging the locking piece 28b downward. The height H of the chassis can be adjusted.

In addition to the above, the support leg structure has each chassis height H on the outer surface (a surface on the side facing the frame 4) around the hole 29 so that the chassis can be surely positioned and fixed with a feeling of moderation. The three convex portions 32a to 32c showing the locking piece positions are
In addition to being provided in 90 ° phases on the locus centered on the hole 29, corresponding to these, a small fitting part that can be fitted in convex and concave with the convex parts 32a to 32c around the slit base end as a center. Hole 33a
There is provided a positioning structure provided with ~ 33c.

Then, when installing such a system ceiling lighting fixture, first, the height of the support leg 25 is selected according to various accessory parts 35 such as a louver and a baffle. For this, for example, a set screw 31 to which the support leg 25 is rotatably connected in advance is fitted to the base end of the slit 30, and then the first screw
This is performed by sliding the support legs 25 along the circumferential direction as indicated by the arrows in the figure.

More specifically, for example, if there is no accessory part 35 as shown in FIG.
In the case of rotating the set screw 31 as a fulcrum so that 28c is in the lower position and installing an accessory component 35 having a thin thickness as shown in FIG. If 28b is pivoted so that the accessory pieces 35 having a large thickness are installed as shown in FIG. 8, the four support legs 25 are set so that the locking pieces 28a are inferior. Rotate. And concave-convex fitting (convex part
32a to 32c and small holes 33a to 33c) are formed, and the locking pieces 28a to 28c are correctly set at that position without tilting. Then, by rotating the set screw 31 to the fixed side and fixing the support leg 25, the required chassis height H is obtained.

After that, when the height adjustment of the support legs 25 is completed, the chassis 3 having the electric box 9 mounted thereon is carried into the ceiling from between the rail members 2 and 2, and the tips of the selected support legs 25 are attached to the equipment mounting space 1
Place them on top of the rails that make up the opening edge. As a result, the chassis 3 is set in the equipment mounting space 1.

Next, the projecting pieces 16, 16 of the socket covers 10, 10 are hooked on the hook portions 13, 13 at the front and rear ends of the chassis, respectively, and placed on the rail members 2, 2 so as to straddle the rail portions. As a result, the socket covers 10 and 10 are arranged in front of the lamp sockets 7 and 8, respectively.

After the socket cover 10 is set, the reflector 11 is put inside the chassis 3 along the inside, and the front and rear ends of the reflector 11 are screwed and fixed to the mounting seat 21 of the chassis 3. As a result, the reflector 11 is attached, and at the same time, the socket covers 10 and 10 are held and fixed in the lamp sockets 7 and 8, respectively.

Then, set the fluorescent lamp. Here, if the accessory parts 35 are to be provided, if they are installed below a fluorescent lamp such as a louver or baffle as shown in FIGS. 6 and 7, a lighting fixture having a chassis height H according to various purposes can be obtained. It will be installed.

However, in the structure in which the chassis height H is adjusted by using the polygonal plate-shaped support legs 25 having the pivot points at the eccentric positions, it is understood that the number of sides increases the adjustment height as it is. . Specifically, in the rectangular shape of this embodiment, as described above, the adjustment of three steps becomes a polygon of more than that, and therefore, the adjustment of three steps or more can be performed.

Therefore, the chassis height H can be changed in large numbers with one component. Moreover, since the supporting legs 25 can be set with the locking pieces 28a to 28c having different heights only by rotating, the adjustment work such as a system change is easy. Moreover, in the structure for positioning the height to be adjusted by the concave-convex fitting, the position to be adjusted can be easily determined, so that the height can always be set to the correct height. Further, since the supporting leg 25 is positioned and fixed in a predetermined direction by the fitting of the concavities and convexities, the chassis 3 can be placed on the rail members 2, 2 so as to maintain a stable state.

In addition, although the piece having the L-shaped cross section is adopted as the locking piece in the embodiment, the locking piece having other structure or shape may be used.

[Effects of the Invention] As described above, according to the present invention, the chassis height can be changed in a large number with one component.

Moreover, since the supporting legs can be set with locking pieces having different heights only by rotating the supporting legs, the height can be adjusted by a simple operation.

Moreover, the chassis can be placed on the rail member so as to maintain a stable state by the structure in which the support leg is positioned and fixed in a predetermined direction by the concave and convex fitting of the convex portion and the fitting portion.

[Brief description of drawings]

1 to 8 show an embodiment of the present invention.
The figure shows a partial perspective view showing the structure around the supporting legs, which is the main part, together with the state in which the height changes, FIG. 2 is an exploded perspective view of the structure around the supporting legs, and FIG. 3 shows the supporting legs. FIG. 4 is an exploded perspective view showing the applied lighting fixture, FIG. 4 is an exploded perspective view showing the structure around the socket cover, FIG. 5 is an exploded perspective view showing the mounting structure of the electric box, and FIGS. Sectional views showing luminaires installed at different chassis heights, FIGS. 9 to 11 are cross-sectional views showing conventional luminaires installed at different chassis heights, and FIG. 12 is different conventional luminaires. 3 is a cross-sectional view showing the leg structure of FIG. 1 ... Device mounting space, 2 ... Rail member, 3 ... Chassis, 25 ... Support legs, 26 ... Plate member (polygonal plate), 28
a to 28c …… Locking piece, 29 …… Hole, 30 …… Slit, 31…
… Set screws, 32a to 32c… Convex part, 33a to 33c… Small hole (fitting part), 35 …… Accessory parts.

Claims (1)

[Claims] 1. A chassis having an outer shape corresponding to the equipment mounting space, which is placed on a rail portion forming an opening edge of the equipment mounting space, and a side portion corresponding to the rail portion of the chassis. Provided on at least three sides of the polygonal plate are locking pieces that can be locked in parallel with each other so that the height of the chassis can be adjusted by mounting different side portions on the rail portions so as to be rotatable in parallel. At the same time, it has a supporting leg having pivot points defined at different distances from the respective locking pieces on the plate surface, and a convex portion and a fitting portion that fits into the convex portion. Is provided on the outer surface of the supporting leg on the locus around the pivot point of the supporting leg, facing the side of the chassis, corresponding to each side of the polygonal plate, and the other is Correspondingly, it is provided on the side part of the chassis and Luminaires and positioning means position the orientation of the support legs in position in accordance with the recess-projection fitting between the engaging portion, that provided with the features.