JP2002025329A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a lighting device which enables mounting a socket mounting metal fitting to chassis easily and correctly. SOLUTION: A socket mounting metal fitting 4 is hooked inside a chassis 1 by inserting a plurality of hooking nails 23 formed so as to protrude outward at the side plate part 21 of socket mounting metal fitting 4 to a plurality of locking holes 13 perforated on both side wall parts 12 of chassis 1 respectively. The lighting device which fixes the metal fitting 4 to the chassis 1 by inserting a side plate part 21 between plurality of folded tongue-shaped pieces 15 folded from a base wall part 11 of chassis 1 and the side wall part 12, is premised. By fringing folded tongue-shaped piece 15 with a pair of base side fringes 15a parallel with the side wall part 12, a pair of top end tapered fringes 15b ranging with oblique angle against the base side fringes, and top end side fringes 15c connecting between those tapered fringes, the shape of the tongue-shaped piece 15 at its top end is made tapered polygon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an inverted Fuji type 1
The present invention relates to lighting fixtures such as lighting fixtures.

[0002]

2. Description of the Related Art In an inverted Fuji-type one-lamp lighting device using a straight tube fluorescent lamp as a light source, socket mounting brackets arranged at both longitudinal ends of a metal chassis are mounted as follows. .

First, a socket fitting is fitted inside a chassis having a substantially U-shaped cross section. At the time of this fitting, a plurality of hooks protruding outwardly from the side plate portion of the socket mounting bracket are inserted into a plurality of locking holes respectively opened on both side wall portions of the chassis. As a result, the socket mounting bracket is hooked inside the chassis. Next, a plurality of folding tongues provided on the base wall portion integrally connecting the side wall portions of the chassis to the side wall portions are folded inside the chassis. Thereby,
The side plate of the socket mounting bracket is sandwiched between the folding tongue and the side wall of the chassis, and the inward deformation of the side plate is suppressed by the stopper action of each folding tongue. The hook is prevented from coming off the hook.

[0004] Conventionally, the folding tongue piece is provided inside the hole by forming a substantially horseshoe-shaped punched hole at a predetermined portion of the base wall portion, and a pair of base side edges parallel to each other are provided. And a U-shaped leading edge connecting these root side edges.

[0005] The mounting of the socket mounting bracket as described above is excellent in that the socket mounting bracket can be fixed to both ends in the longitudinal direction of the chassis with a simple configuration without requiring any fixing parts.

When the folding tongue is folded into the inside of the chassis, the U-shaped front edge of the folding tongue due to the variation in the position in the width direction of the socket mounting fitting already fitted inside the chassis. May hit the end face of the side plate portion of the socket mounting bracket. In this case, the folding tongues must be folded while pushing the side plate toward the side wall.

However, since the width of the folded tongue is small and the curvature of the U-shaped front side edge is small in accordance with the width, the edge near the top of the U-shaped front side edge is formed on the end face of the side plate portion. Upon contact, the displacement is performed. In other words, the pushing is performed in a state where the intersection angle between the U-shaped front side edge and the side plate portion is large.

[0008] Therefore, a force directed toward the side wall cannot be sufficiently applied to the side plate portion with the folding of the folding tongue piece, and the side plate portion may not be pushed and retreated smoothly.
In some cases, there is a possibility that the side plate portion of the socket mounting bracket acts as a stopper, resulting in poor folding of the folding tongue, and the socket mounting bracket may not be properly mounted on the chassis.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lighting fixture which can easily and properly mount a socket fitting on a chassis.

[0010]

In order to solve the above-mentioned problems, a first aspect of the present invention is to provide a socket mounting bracket provided with a plurality of hooks which protrude outward on each of opposite side plate portions, Side walls arranged on both side edges of the base wall so as to overlap the outer surface of the side plate are bent to form a substantially U-shaped cross section, and each of the side walls is engaged with the hook. A plurality of holes, and a pair of root side edges substantially parallel to the side wall portion, a tip side tapered edge formed by forming an obtuse angle with at least the root side edge near the side wall portion among these root side edges, and The tip side shape is formed by forming a tapered polygonal shape by being bordered by the tip side edge connecting the tapered edge and the other base side edge, and sandwiching the side plate portion of the socket mounting bracket between the side wall portion and the tapered edge. Multiple folded tongues to be folded, It is characterized in that it comprises a and a respective metal chassis having both longitudinal ends of the serial base wall portion.

According to the first aspect of the present invention, the folding tongue pieces provided at both longitudinal end portions of the base wall portion of the chassis include a pair of root side edges substantially parallel to the side wall portion of the chassis. At least the tip side tapered edge formed by forming an obtuse angle with respect to the root side edge near the side wall portion, and the tip side edge connecting this tapered edge and the other root side edge are bordered by a tapered polygon. It is formed in a shape. For this reason, when the folded tongue is folded inside the chassis, when the end of the side plate portion of the socket mounting bracket intersects with the tapered edge on the distal end side of the folded tongue, the intersection angle can be reduced. By reducing the crossing angle in this manner, the force directed toward the side wall of the chassis can be sufficiently applied to the side plate portion of the socket mounting bracket as the folding tongue is folded, so that the side plate portion is smoothly pushed back and folded. Poor folding of the tongue piece can be prevented.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An inverted Fuji single-light lighting device according to a first embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the lighting fixture includes a long metal chassis 1, a lighting device 2, a terminal block 3, a pair of socket mounting brackets 4, a reflector mounting bracket 5, a pair of lamp sockets 6, It is provided with a reflection plate 7, a screw receiving fitting 8, and the like.

As shown in FIG. 2 and the like, the chassis 1 is formed in a substantially U-shaped cross-section by bending the side walls 12 on both side edges of the base wall 11 downward. This chassis 1
Socket mounting brackets 4 are mounted at both ends of the chassis 1 in the longitudinal direction as described later, and a reflector mounting bracket 5 is positioned at the center of the chassis 1 in the longitudinal direction. The lighting device 2 and the terminal block 3 are mounted between the metal fitting 5 and one socket mounting metal 4.

As shown in FIG. 2B, a pair of locking holes 13 are formed at both longitudinal ends of the opposed side walls 12 of the chassis 1. These locking holes 13 have a slit shape and extend in the width direction of the side wall 12.

As shown in FIG. 2B, four folding tongue pieces 15 are provided at both ends in the longitudinal direction of the base wall portion 11 of the chassis 1 in the vicinity of the side wall portion 12. . As shown representatively in FIG.
Is provided inside the substantially horseshoe-shaped punched hole 16,
A pair of root side edges 15a, a pair of tip side tapered edges 15b,
It is configured such that it is bordered by a single tip side edge 15c and the tip side shape is a tapered polygonal shape.

More specifically, the pair of root side edges 15a is provided to extend substantially parallel to the side wall 12 at a position close to the locking hole 13. The pair of distal tapered edges 15b is formed at an obtuse angle with the root edge 15a, thereby gradually reducing the width of the distal end portion of the folding tongue piece 15 toward the distal end. The obtuse angle is, for example, approximately 135
°, preferably a slightly larger angle.
The distal edge 15c is provided to connect between the pair of distal tapered edges 15b. The tip side edge 15c may be formed by an arc surface instead of a straight line.

The configuration in which the folding tongue pieces 15 are individually symmetrical as described above is excellent in that the configuration of the press die for punching them can be made the same and the die cost is reduced.

As shown in FIGS. 2A and 2B, the socket mounting bracket 4 has side plates 21 opposed to each other, and a socket mounting hole 22 is provided in a portion between these side plates 21. Have been. The lamp socket 6 has a portion 22 having a narrow hole width in the socket mounting hole 22.
By being inserted into the socket a, it is mounted on the socket mounting bracket 4. The metal fitting 4 has a width capable of fitting inside the chassis 1, and a pair of hooking claws 23 protruding outward are provided on both side plate portions 21. Each of the hooking claws 23 is inserted into the locking hole 13 and is provided, for example, by cutting and raising.

The procedure for attaching the socket fittings 4 to both longitudinal ends of the chassis 1 will be described.

First, while elastically deforming the socket fitting 4 slightly, the two side plates 21 are fitted into the inside of both longitudinal ends of the chassis 1, respectively. 23 are inserted into the corresponding locking holes 13 respectively. Thereby, the socket mounting member 4 is temporarily fixed to a predetermined mounting position of the chassis 1.

Next, with the end of the chassis 1 set on a jig or the like (not shown), each folding tongue piece 15 is folded into the inner surface side of the chassis 1 at the base thereof by an automatic pressing tool or the like. The folding angle of the folding tongue piece 15 caused by this folding is about 45 ° to 60 °.

Each folded tongue piece 15 folded in this way
4 is raised along the inner surface of the side plate portion 21 of the socket mounting member 4 as shown in FIG. 4, and the root side edge of one of the folded tongue pieces 15 is formed on the inner surface. 15a is engaged, or can be engaged by approaching a close distance. As a result, the folding tongue 15 serves as a stopper and prevents the side plate portion 21 from being deformed inward, so that the hooking claw 23 can be caught in the locking hole 13 after all, and the socket can be attached. The metal fitting 4 can be prevented from being accidentally detached from the chassis 1.
FIG. 2A shows a state in which the socket fitting 4 is attached to the longitudinal end of the chassis 1.

Each of the pair of socket mounting brackets 4 and the reflector mounting bracket 5 has a mounting hole 25 as shown in FIGS. 2 and 5, and the screw receiving bracket 8 is provided in the hole 25. Installed. Each screw receiving bracket 8
Is formed by bending a screw receiving piece 8b having spring properties on both sides of the screw insertion hole 8a so that the tips thereof abut each other. A screw shaft portion of a reflection plate mounting screw 26 (shown as one representative in the figure) such as a decorative screw is passed through the screw insertion hole 8a of the screw receiving bracket 8, and this screw shaft portion further has a double screw receiving portion. It passes between the pieces 8b and is hooked on the leading edges of the screw receiving pieces 8b.

As shown in FIG. 1, the reflection plate 7 for covering the chassis 1 is formed in an inverted Fuji shape by a metal plate or the like, and has socket through holes 31 at both ends in the longitudinal direction. At the same time, screw through holes 32 are formed in the vicinity and at the center in the longitudinal direction, respectively. The reflector 7 covers the chassis 1 fixed to the ceiling of the building, and covers the chassis 1 by inserting the reflector mounting screws 26 passed through the screw holes 32 into the respective screw receiving brackets 8.
It can be mounted with the upper edge in contact with the ceiling. In this mounting state, a straight tube fluorescent lamp 9 is removably mounted between the lamp sockets 6 inserted into both socket through holes 31.

The socket mounting bracket 4 of the luminaire having the above-described configuration is mounted on the chassis 1 in the above-described procedure. At this time, the socket mounting bracket 4 already fitted inside the longitudinal ends of the chassis 1 is used. Of the folding tongue piece 15 folded inside the chassis 1 may hit the end face of the side plate portion 21 of the socket fitting 4 (see FIG. 3).

In this case, the tip side of the folding tongue piece 15 has a tapered polygonal shape, and the tip side tapered edge 15 b contacts the end face of the side plate portion 21. For this reason, although the width of the folding tongue piece 15 is narrow, the intersection angle θ (see FIG. 3) between the end surface of the side plate portion 21 and the tapered edge 15b on the distal end side becomes small, so that the folding tongue piece 15 is folded inside. Accordingly, a component force toward the side wall portion 12 of the chassis 1 can be sufficiently applied to the side plate portion 21. Therefore, the side plate 21 of the socket fitting 4 can be smoothly and reliably pushed away toward the side wall 12 with the folding of the folding tongue,
Poor folding of the folding tongue piece 15 can be prevented.

As described above, the folding tongue piece 15 having the above-described structure is used.
By attaching the socket mounting bracket 4 to the chassis 1 with the above, the socket mounting bracket 4 can be easily and properly mounted. In a state where the folding tongue piece 15 is properly folded, as shown in FIG.
Since the base side edge 15a closer to or near the side plate 21 approaches or comes into contact with the side plate portion 21, the side plate portion 21 is prevented from being deformed inward by using the folded tongue piece 15 as a stopper, and the hooking claw 23 is thereby caused. It can be prevented from falling out of the locking hole 13.

The reflecting plate mounting member 5 is formed by bending a sheet metal into a substantially Z-shape in side view, and as shown in FIG. 5A, a base portion 5a screwed to the chassis 1. In addition to the above, a power supply line through hole 35 is opened, and the screw receiving bracket 8 is attached to a flat plate 5b at the end substantially parallel to the base portion 5a. Further, the base portion 5a
And a flat plate 5b, a slanted wall 5c is provided with a screw relief portion 36 facing the screw receiving bracket 8 and the power line through-hole 35, respectively.
Is provided. The screw escape portion 36 is provided to escape the insertion end portion of the reflection plate mounting screw 26 that is passed through the screw receiving bracket 8, and the back end thereof is shown in FIG.
Is closed by the closing wall 36a as shown in FIG. That is, the screw relief portion 36 is formed as a recess having a closing wall 36 a facing the power supply line through hole 35.

By forming the screw relief portion 36 in this manner, the screw escape portion 36 passes through the electric wire lead-in hole 1a (see FIG. 1) opened in the chassis 1 and the power supply line through hole 35 communicating therewith into the inside of the chassis. Power supply line (not shown)
However, it can be prevented from entering the screw escape portion 36 by the closing wall 36a. Therefore, the power supply line does not get caught on the reflector mounting bracket 5, and workability when the power supply line is drawn into the chassis 1 can be improved. FIG. 5B shows the movement of the power supply line drawn by the arrow.

FIG. 6 shows a conventional example of a reflector mounting bracket. In this example, a screw escape portion 36 'for escaping the insertion end of the reflector mounting screw is formed by a through hole. With such a screw relief portion 36 ', the tip of the power supply line drawn into the chassis often enters the screw relief portion 36' formed of a through-hole, and in each case, enters the screw relief portion 36 '. Since work for pulling out the power supply line is required, workability in drawing the power supply line into the chassis is not good. However, such a problem can be solved by using the screw relief portion 36 having the closing wall 36a as described above.

FIG. 7 shows a second embodiment of the present invention. Since the second embodiment is basically the same as the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. I will explain only. The second embodiment is different from the first embodiment in that each of the tongue pieces 15 is provided with a tapered edge 15b on one end only.

That is, the folded tongue piece 15 having a tapered polygonal shape on the tip side is formed with respect to a pair of root side edges 15a substantially parallel to the side wall portion 12 of the chassis 1 and a root side edge 15a near the side wall portion 12. It is bordered by one tip side tapered edge 15b formed only at an obtuse angle and a tip side edge 15c 'connecting the tapered edge 15b and the other root side edge 15a. The tip side edge 15c 'is connected to the other root side edge 1
An edge portion extending straight from the edge portion 5a and an edge portion bent from this edge portion and extending to the tapered edge 15b on the distal end side are formed. Configurations other than those described above are the same as those of the first embodiment, including a configuration not shown in FIG.

Also in the second embodiment, since the bent tongue piece 15 has the tapered edge 15b on the tip side and has a tapered polygonal shape, the same operation as that of the first embodiment is obtained, and The problem can be solved.

[0035]

According to the first aspect of the present invention, with the folding of the folding tongue piece having a tapered edge on the distal end side and a tapered polygonal shape on the distal end side, the side plate portion of the socket mounting bracket is folded. Since a sufficient force is applied to the side wall of the chassis to smoothly push the side plate away and prevent the folding tongue from being poorly folded, it is possible to provide a lighting fixture that can easily and properly mount the socket mounting bracket to the chassis. .

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a lighting fixture according to a first embodiment of the present invention.

FIG. 2A is a perspective view showing a state in which a socket fitting is attached to a chassis of the lighting fixture of FIG. 1; FIG. 2B is a perspective view showing the lighting fixture of FIG. 1 in a state where a chassis and a socket mounting bracket are separated.

FIG. 3 is a sectional view showing a folding tongue piece included in the chassis of the lighting fixture of FIG. 1;

FIG. 4 is a sectional view showing a mounting portion of a socket mounting bracket to a chassis of the lighting fixture of FIG. 1;

FIG. 5A is a perspective view showing a reflector mounting bracket provided in the lighting apparatus of FIG. 1 together with a screw receiving bracket. (B) is FIG.
FIG. 3A is a cross-sectional view showing a portion around a screw escape portion of the reflector mounting bracket of FIG.

FIG. 6A is a perspective view showing a reflector mounting bracket provided in a conventional lighting fixture. FIG. 7B is a cross-sectional view showing the area around the screw relief portion of the reflector mounting bracket of FIG.

FIG. 7 is a cross-sectional view showing one end of a chassis of a lighting fixture according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Chassis 4 ... Socket mounting bracket 11 ... Base wall part 12 ... Side wall part 13 ... Locking hole 15 ... Folding tongue piece 15a ... Root side edge 15b ... Tip side taper edge 15c, 15c '... Tip side edge 16 ... Punching hole 21: Side plate 23: Hook claw

Claims (1)

[Claims] 1. A socket mounting bracket provided with a plurality of hooks protruding outward on each of opposing side plate portions, and arranged on both side edges of a base wall portion so as to overlap an outer surface of the side plate portion. Each of the side wall portions is bent to form a substantially U-shaped cross section, and each of the side wall portions has a plurality of locking holes through which the hooking claws are inserted, and a pair of root sides substantially parallel to the side wall portion. Edge, a tip side tapered edge formed by forming an obtuse angle with at least the root side edge close to the side wall portion, and a tip side edge connecting the tapered edge and the other root side edge. A plurality of folding tongue pieces, each of which has a tip side shape formed into a tapered polygonal shape and is folded so as to sandwich the side plate portion of the socket mounting bracket between the side wall portion, are provided at both ends in the longitudinal direction of the base wall portion. Metal chassis each had Luminaire, characterized by comprising.