JPH11339549A - Ballast mounting structure of luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ballast mounting structure of a luminaire, not using plate spring nuts for fixing mounting screws on a luminaire body. SOLUTION: This structure is equipped with fixing holes opened in a luminaire body, mounting members uprightly mounted in the fixing holes from above, and a ballast mounted on and fixed to the mounting members, and the mounting members 50 are characterized by each comprising a fixing screw part 52 engaging with and fixed by the fixing hole 48 in the luminaire body, a shaft part 51 inserted into a mounting part 11 in the ballast, and mounting screw part 53 to be mounted with a fixing member 30, 29 for fixing the ballast.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ballast mounting structure for a lighting fixture.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, a mounting screw and a nut have been widely used for mounting a ballast to a lighting fixture.

The ballast 1 extends horizontally with respect to the longitudinal direction of the bottom plate 2 of the ballast, and bushings 10, 10 made of a rubber material or the like are fitted into the overhang portions 2a, 2a, and the axial center of the bushing is A mounting hole 1 as a mounting part as a ballast through which the mounting screw is inserted vertically
1 is provided.

[0004] The ballast 1 to which the bushing 10 is attached is:
It is fixed by a mounting screw 25 as a mounting member mounted from above the back portion 21 of the instrument body 20 and nuts 29 and 30 as fixing members.

A fixing hole 22 having a rectangular shape having the same pitch as the pitch of the mounting holes 11 of the bushings mounted on both ends of the ballast 1 is formed in the back portion 21 of the appliance body.
22 are provided in pairs.

The mounting screw 2 attached to the fixing hole 22
Reference numeral 5 denotes a head 31 having a cruciform engagement recess, for example, in which the tip of a driver is engaged, and a mounting screw 34 erected from the head and provided on the distal end side. A shaft portion 33 having a diameter larger than the mountain diameter, and a fixing shaft portion 32 having a square shape engaging with a square fixing hole 22 formed in the instrument body 20 at the root portion on the head side. Make up.

[0007] A method of attaching the ballast to the instrument body will be described.

As a first step, a mounting screw 25 as a mounting member is inserted into a pair of fixing holes 22, 22 formed in the back surface portion 21 of the appliance body from above the appliance body, and the head side of the mounting screw 25. The fixing shaft portion 32 provided at the base portion is inserted in accordance with the fixing hole 22.

In this state, the shape of the fixing shaft portion 32 provided at the root portion of the mounting screw 25 on the head side and the shape of the fixing hole 22 formed in the back portion of the instrument body are both formed. Since it has a quadrangular shape, the mounting screw 25 is mounted in the fixing hole 22 of the instrument body without rotating.

In a second step, a spring leaf nut 40 made of an elastic plate material is attached to the mounting screw in order to fix the mounting screw 25 mounted on the main body 20 to the main body.

The spring plate nut 40 has a rectangular outer shape and an engagement recess 42 having a triangular tip at the center.
Are provided to face each other.

In order to fit the spring leaf nut 40 into the mounting screw, the spring leaf nut is inserted upward from the tip of the mounting screw, and a pair of tongue pieces 41, 41 provided on the spring leaf nut become The engagement recesses 42, 42 are respectively inserted downward while being pressed against the shaft portion 33 while bending downward.
By inserting the spring plate nut until it comes into contact with the lower surface of the rear surface of the instrument body, the mounting screw 25 is clamped and fixed to the appliance body rear portion 21 by the head 31 of the mounting screw and the spring plate nut 40. .

As a third step, a fixing hole 2 of the instrument body is provided.
The mounting holes 11, 11 of a pair of bushings mounted on both ends of the ballast 1 are inserted from the lower ends of the pair of mounting screws 25, 25, which are hung down from 2 and fixed by spring leaf nuts 40, respectively.

As a fourth step, the flange nut 29 is fastened and fixed to the mounting screw portion 34 of the one mounting screw. Furthermore, after first inserting the earth washer 45 into the mounting screw on the other side, by tightening the nut 30, the ends of both ends of the earth washer bite into the instrument body 20, and the electricity generated in the ballast is grounded. Grounded through the washer to the instrument body.

It is desirable that the mounting screw 25 be fixed to the instrument body in consideration of the workability when replacing the ballast 1 due to the life of the ballast and the like.

Therefore, the fixing hole 22 of the appliance main body is formed in a quadrangular shape, and the mounting screw 25 attached to this fixing hole has a square shape smaller than the fixing hole 22 of the appliance main body at the head and at the root on the head side. A fixing shaft portion 32 as an engaging portion,
It comprises a shaft portion 33 corresponding to the height of the bushing 10 of the ballast and to which the spring plate nut 40 is mounted, and a mounting screw portion 34 which engages with the nut.

[0017]

As described above, the conventional ballast mounting structure for a lighting fixture utilizes a mounting hole of a bushing fitted into an end of the ballast in a mounting screw fixed to the fixture body. And tighten the nut.

Further, in consideration of the workability when replacing the ballast, the spring plate nut is used to fix the mounting screw to the instrument body, so that the number of parts is large and the assembly in the factory is troublesome. There was a problem of cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a ballast mounting structure for a lighting fixture in which a mounting screw is fixed to a fixture body without using a spring plate nut.

[0020]

According to a first aspect of the present invention, there is provided a ballast mounting structure for a lighting fixture according to the first aspect of the present invention. A mounting member mounted upright and a stabilizer mounted and fixed to the mounting member, wherein the mounting member engages with a fixing hole of the instrument body and is fixed; It is characterized by comprising a shaft portion into which the mounting portion of the ballast is inserted, and a mounting screw portion to which a fixing member for fixing the ballast is mounted.

According to a second aspect of the present invention, there is provided a ballast mounting structure for a lighting fixture according to the present invention, wherein the shaft has a polygonal cross section.

According to a third aspect of the present invention, there is provided a ballast mounting structure for a lighting fixture according to the present invention, wherein a fixing hole opened in the fixture main body, the fixing hole is inserted into the fixing hole from above, and is fixed to the fixing hole. A mounting member having a head standing on the lower surface side, and a stabilizer mounted and fixed to the mounting member, wherein the mounting member is provided at a root of the head side with a fixing hole of the instrument body. A fixing screw part to be fixed and fixed, a shaft part into which the mounting part of the ballast is inserted, and a mounting screw part to which a fixing member for fixing the ballast is mounted. is there.

According to a fourth aspect of the present invention, there is provided a ballast mounting structure for a lighting device according to the present invention, wherein the fixing screw portion is a reverse screw.

According to a fifth aspect of the present invention, there is provided a ballast mounting structure for a lighting device according to the present invention, wherein the fixing hole is burred.

According to a sixth aspect of the present invention, in the ballast mounting structure for a lighting device according to the present invention, the fixing screw portion is a self-tapping screw.

In the above configuration, a fixing hole is formed on the back surface of the instrument body, and the fixing screw portion of the mounting screw is engaged with the fixing hole and fixed.

Further, the ballast is tightened with a mounting screw fixed to the instrument body using a mounting hole of the ballast.

Therefore, the fixing screw portion of the mounting screw is engaged and fixed to the fixing hole of the fixture body, so that the spring plate nut used in the ballast mounting structure of the lighting equipment according to the prior art can be used. The mounting screw can be fixed to the instrument body.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a ballast mounting structure for a lighting fixture according to an embodiment of the present invention will be described with reference to FIGS.

Regarding the lighting fixture to which the ballast is attached,
A description will be given with reference to the recessed lighting fixture shown in FIGS.

The lighting fixture is a fixture body 20 having an open bottom.
Lamp socket mounting plates 15 and 15 mounted on both ends of the fixture body in a manner not shown, lamp sockets 16 and 16 detachably mounted on opposite sides of these lamp socket mounting plates, A reflector 18 protrudes downward, abuts against the lower surface of the lamp socket attachment plate, and is attached along the longitudinal direction in the fixture body.
Lamp sockets 16 projecting downward from both ends of
Straight fluorescent lamp 17 removably mounted between 16
(Hereinafter referred to as “lamp”), and decorative screw 1 for screwing and fixing reflector 18 to lamp socket mounting plate 15 from below.
9.

Further, a terminal block 36 to which a power supply line and the like are attached and a ballast 1 for stably lighting the lamp shown in FIG.

As shown in FIG. 5, the ballast 1 includes a bottom plate 2, a PC plate (not shown) on which electronic components and a terminal block mounted on the bottom plate are mounted, and a bottom plate 2 covering the PC plate. And a cover 3 attached to the cover 3.
Furthermore, a part of the terminal block 4 attached to both ends of the PC board projects outside the end plate of the cover body 3.

A bushing 10 made of a rubber material or the like is fitted into a groove 5 having an open end at both ends of the bottom plate 2.
At the center of the bushing 10 in the axial direction, a mounting hole 1 as a mounting portion of a ballast through which the mounting screw is inserted penetrating vertically.
1 is provided. The reason why the bushing 10 is made of a rubber material is to prevent vibrations generated from the ballast from being transmitted to the instrument body. The ballast 1 is provided with mounting screws in mounting holes (not shown) as mounting portions for ballasts (not shown) formed directly at both ends of the bottom plate of the ballast without mounting the ballast 1 to the instrument body by mounting screws. The structure which inserts and attaches to an apparatus main body may be sufficient.

Next, a ballast mounting structure for a lighting fixture will be described with reference to FIGS. FIG. 1 shows a first embodiment, and FIG. 2 shows a second embodiment.

First, the ballast mounting structure for a lighting fixture according to the first embodiment will be described with reference to FIG.

The back part 2 of the instrument body to which the ballast 1 is attached
A pair of fixing holes 48, which are burring round holes burred upward, are provided at both ends of 1.

An attachment screw 50 as an attachment member attached to these fixing holes 48 has a shaft portion 51 corresponding to the height of the bushing 10 of the ballast and having an outer shape of a hexagonal nut, and a shaft center of the shaft portion 51. A fixing screw portion 52 that is engaged with and fixed to the fixing hole 48 of the instrument main body is provided at an upper portion along the mounting portion. The fixing screw 52 is a self-tapping screw. Note that the shaft portion 51 is not limited to a hexagonal nut shape but may be a round shape.

The fixing screw portion 52 may be a normal screw instead of a self-tapping screw. Further, when the fixing screw portion 52 of the mounting screw is a self-tapping screw, the fixing hole 48 formed in the instrument main body cuts the fixing hole when the self-tapping screw is attached. It is formed in a fixing hole large enough to be attached.

When the fixing screw portion of the mounting screw is 52, which is a normal screw, the shape of the fixing hole 48 formed in the instrument body is such that the fixing screw portion of the mounting screw is fitted. Even if the female screw is formed in a certain size, the female screw to which the fixing screw portion of the mounting screw is screwed may be formed in the fixing hole of the instrument body. In other words, any structure may be used as long as the fixing screw portion of the mounting screw is engaged with and fixed to the fixing hole of the instrument body.

The reason why the fixing hole 48 of the instrument main body is formed by burring is that the instrument main body is made of a thin metal plate, so that the allowance for the engagement with the fixing screw portion of the mounting screw or the thread allowance for the thread can be reduced. By earning, it is to attach securely and firmly.

Further, the reason why the shaft portion 51 of the mounting screw is formed in a hexagonal nut shape is that a box driver can be used to screw the mounting screw into the fixing hole.

A method for fixing the ballast to the instrument body will be described.

As a first step, the fixing screw portion 52 of the mounting screw is fitted or screwed into the fixing hole 48 from the inside of the rear portion 21 of the instrument body and fixed, and these mounting screws are lowered from the lower surface of the rear portion of the instrument body. And fix it vertically.

As a second step, the bottom plate 2 of the ballast is placed on the upper surface side of a pair of mounting screws 50, 50 vertically mounted from the lower surface of the back of the appliance body, and the ballast is moved upward. Mounting holes 1 of the bushings which are fitted and fixed to both ends of the ballast at the ends of the mounting screws 50, 50
1 and 11 are inserted respectively.

As a third step, the flange nut 29 is fastened and fixed to the mounting screw portion 53 of the mounting screw on one side. First, the earth washer 45 is inserted into the mounting screw portion 53 of the other mounting screw, and then the nut 30 is tightened. The generated electricity is grounded to the instrument body through a ground washer.

It is desirable that the mounting screw be fixed to the instrument body 20 in consideration of the workability when replacing the ballast due to the life of the ballast and the like.

Therefore, as a ballast mounting structure for a lighting fixture according to the first embodiment, a fixing hole is provided above a mounting screw from below a rear part of a fixture body without using a spring plate nut used in the prior art. A fixing screw portion 52 that is fitted or screwed into the device for fixing is provided.

Next, a ballast mounting structure for a lighting fixture according to a second embodiment will be described with reference to FIG.

A pair of fixing holes 23, 23, which are burring round holes which are burred downward, are provided at both ends of the back of the instrument body to which the ballast is attached.

The mounting screw 55 attached to the fixing hole 23 has, for example, a head 31 having a cross-shaped engaging concave portion to which the tip of the driver is engaged, a nut 31 standing upright from the head and a nut on the tip side. , A shaft portion 33 corresponding to the height of the bushing 10 of the ballast and having a diameter larger than the diameter of the mounting screw portion, and a base portion at the head side of the mounting portion 34 pierced in the instrument body. And a fixing screw portion 56 which is engaged or screwed and fixed in the fixing hole 23 thus formed.
Has a self-tapping reverse screw (left-hand screw). The fixing screw portion may be a normal reverse screw instead of a self-tapping reverse screw.

The reason why the fixing hole of the instrument body is formed by burring is that the instrument body is made of a thin sheet metal, so that it is engaged with the fixing screw portion of the mounting screw or fixed by screwing.
This is to increase the engagement allowance or to increase the thread allowance.

A method for fixing the ballast to the instrument body will be described.

As a first step, a mounting screw 55 is inserted into the fixing hole 23 from above the rear part of the instrument body, and a fixing screw portion 56 formed at the root of the mounting screw on the head side is engaged with the fixing hole 23. The mounting screws are vertically fixed from the back of the instrument body.

As a second step, the bottom plate 2 of the ballast is placed on a pair of mounting screws 55, 55 vertically mounted from the back of the instrument body, and the ballast is moved upward, so that a pair of the ballasts is mounted. Screws 55, 55 are inserted into the mounting holes 11, 11 of the bushing, which are fitted and fixed to both ends of the ballast, respectively.

As a third step, one of the mounting screws 5
The flange nut 29 is tightened and fixed to the mounting screw part 34 of No. 5. First, after inserting the earth washer 45 into the mounting screw on the other side, the nut 30 is tightened, so that both ends of the earth washer bite into the instrument body,
Electricity generated in the ballast is grounded to the instrument body through a grounding washer.

It is desirable that the mounting screw be fixed to the instrument body in consideration of the workability when replacing the ballast, due to the life of the ballast and the like.

Therefore, as a ballast mounting structure for a lighting fixture according to the second embodiment, a fixing screw portion is provided at a root portion on the head side of the mounting screw without using the spring plate nut used in the prior art. This fixing screw is engaged with the fixing hole from above the rear part of the instrument body and is fixed to the instrument body.

Next, the operation of the above embodiment will be described.

In actual mounting, the mounting screw is fixed to the instrument body by engaging and fixing the fixing screw portion of the mounting screw from above or inside the instrument body to the fixing hole of the instrument body.
Then, the ballast is nut-fastened to a mounting screw fixed to the instrument body using a mounting hole as a mounting portion of the ballast.

[0061]

As described in detail above, claims 1 to 6 are provided.
According to the present invention described, since the mounting screw is fixed to the instrument main body without using a spring plate nut, the fixing screw is provided with the fixing screw portion for engaging and fixing the fixing hole of the instrument main body. The number of parts can be reduced, and the labor for assembling at the factory can be reduced. Thus, an inexpensive lighting fixture can be provided.

According to the second aspect of the present invention, by forming the cross section of the shaft portion into a multi-shape, a box driver can be used to screw the mounting screw of the first aspect into the fixing hole.

According to the present invention described in claim 4, according to claim 3,
By setting the fixing screw part of the mounting screw described to be reverse screw, when mounting the ballast, the fixing screw part of the mounting screw does not loosen with respect to the fixing hole of the instrument body when tightening the nut. To do that.

According to the fifth aspect of the present invention, since the fixing hole provided in the instrument main body is burred, when the mounting screw and the fixing hole are engaged or screwed, the screw thread is caught by the thread. Earn money and prevent damage to the fixing hole threads.

According to the sixth aspect of the present invention, since the fixing screw portion of the mounting screw is a self-tapping screw, it can be easily screwed into the fixing hole formed in the instrument body.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a ballast mounting structure for a lighting fixture according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a ballast mounting structure for a lighting fixture according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing a general recessed lighting device to which a ballast is attached.

FIG. 4 shows the recessed lighting device according to the above.
(A) is a top view. (B) is a side sectional view.

FIG. 5 is a plan view showing the structure of a ballast attached to the instrument body.

FIG. 6 is a perspective view showing a ballast mounting structure for a lighting fixture according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Ballast, 11 ... Mounting hole (ballast mounting part), 20 ... Instrument main body, 23 ... Fixing hole, 29 ... Flange nut (fixing member), 30 ... Nut (fixing member), 31 ... Head, 48 ... fixing holes, 50 ... mounting screws (mounting members), 51 ... shaft portions, 52 ... fixing screw portions, 53 ... mounting screw portions, 55 ... mounting screws (mounting members), 56 ... fixing screw portions.

Claims (6)

[Claims] 1. A fixing hole which is opened in an instrument main body, a mounting member which is mounted upright on the fixing hole from the inside, and a stabilizer which is mounted and fixed to the mounting member, wherein the mounting member comprises: A fixing screw portion engaged with and fixed to the fixing hole of the instrument body, a shaft portion into which the mounting portion of the ballast is inserted, and a mounting screw portion to which a fixing member for fixing the ballast is mounted. A ballast mounting structure for a lighting fixture. 2. The ballast mounting structure for a lighting fixture according to claim 1, wherein said shaft section has a polygonal cross section. 3. A fixing member having a fixing hole opened in the instrument body, a fixing member inserted through the fixing hole from above, fixed to the fixing hole, and having a head standing on a lower surface side of the instrument body. A ballast attached to and fixed to a member, wherein the mounting member is provided at a root portion on the head side and is engaged with and fixed to a fixing hole of the instrument main body; A ballast mounting structure for a lighting fixture, comprising: a shaft portion into which a portion is inserted; and a mounting screw portion to which a fixing member for fixing the ballast is mounted. 4. The ballast mounting structure for a lighting fixture according to claim 3, wherein said fixing screw portion is a reverse screw. 5. The ballast mounting structure for a lighting fixture according to claim 1, wherein said fixing hole is burred. 6. The ballast mounting structure for a lighting fixture according to claim 1, wherein said fixing screw portion is a self-tapping screw.