JPH11154410A - Recessed type ceiling luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recessed type ceiling luminaire with a terminal block mounting bracket which is safe and easy to be mounted. SOLUTION: A terminal block mounting bracket 40 is equipped with a main part 41 of the terminal block mounting bracket comprising a bent part 43 formed connectively on a terminal block mounting surface 42 to mount the terminal block 20, a hooking piece 44 at one end of the main part of the terminal block mounting bracket and an engagement piece 45 with a projecting engagement part 45a at a tip of another end, and while a slit hole 50 for the hooking piece of the terminal block mounting bracket to hook from the inside is provided on a side 11 of a ballast storage box and on a rear side of the side 11 an adjacent to the side, the first cut and raised part 51 with an engagement hole 52 formed to hook the projecting engagement part 45a of the engagement piece 45 is cut out and raised, the second cut and raised part 55 to lock the engagement piece 45 in the neighborhood of the first cut and raised part 51 is provided by cutting and raising it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted lighting device, such as a lighting device for a system ceiling.

[0002]

2. Description of the Related Art A ceiling-mounted luminaire according to the prior art will be described with reference to FIGS.

[0003] A box-shaped ballast storage box 10 which is opened downward is mounted on the upper part of the ceiling-mounted lighting fixture, and a ballast (not shown) is mounted in the ballast storage box 10. I have.

A substantially rectangular power line through hole 13 is formed at the end of the side surface 11 of the ballast storage box, and a mounting hole to which a screw is mounted is provided on the right side of the power line through hole 13. 16 are drilled.

A substantially rectangular parallelepiped terminal block 20 having a power line insertion surface 21 disposed opposite to the power line through hole 13 is provided inside the power line through hole 13. The terminal block mounting bracket 2 is attached to the base mounting bracket 25.
At both ends, a mounting piece A27 and a mounting piece B28, which are bent outward at right angles, respectively, are formed. On the mounting surface B28, a female screw is formed on the inner surface to which the screw is screwed. A hole 29 is drilled.

A bottom surface 26 as a terminal block mounting surface of the terminal block mounting bracket 25 has a flat shape.
A plurality of mounting holes 15 for screwing the terminal block 20 with screws are formed.

A method of assembling the terminal block mounting bracket to the ballast storage box will be described.

First, after the terminal block 20 having the power supply insertion surface 21 on the front side is brought into contact with the bottom surface 26 of the terminal block mounting bracket 25, a screw 31 is inserted into the mounting hole 15 formed in the bottom surface 26. Then, the terminal block 20 is fixed to the terminal block mounting bracket 25 by screwing into a screw hole (not shown) formed on the back surface of the terminal block 20.

Next, the mounting piece A27 of the terminal block mounting bracket to which the terminal block is fixed is hooked from the inside of the stabilizer housing box 10 to the side edge portion 14 of the power supply line passage hole 13, and the terminal block mounting bracket is further mounted. 25 is rotated clockwise around the side edge portion 14 as a fulcrum, and the mounting piece B2 of the terminal block mounting bracket is rotated.
8 is brought into contact with the back surface of the side surface portion 11.

In this state, the mounting holes 16 provided in the side portions are provided.
And the screw hole 29 of the terminal block mounting bracket are located coaxially, so that the screw 32 is inserted into the mounting hole 16 from the front side and screwed into the screw hole 29 of the terminal block mounting bracket, thereby mounting the terminal block. Fitting 25 to side 1 of ballast storage box 10
Fix to 1.

The power supply insertion surface 21 of the terminal block fixed to the terminal block mounting bracket 25 is disposed in contact with or close to the lower surface of the lower end of the power supply line through-hole 13. Can be fixed to the ballast storage box 10 without play, and the power line insertion surface 21 of the terminal block is
It is located on substantially the same plane as the power line passage hole 13 of the ballast storage box.

However, when the power supply line (not shown) inserted into the power supply insertion hole (not shown) provided in the power supply insertion surface 21 of the terminal block 20 is removed from the power supply insertion surface 21 of the terminal block, Since an external force acts on the side, the upper portion of the terminal block 20 protrudes outward.

In order to prevent this, a terminal block mounting bracket 25 is provided.
A screw hole 18 is formed in the top surface 17 of the ballast storage box facing the upper corner portion 26a of the ball screw.
Is screwed to prevent the terminal block mounting bracket 25 from moving forward.

[0014]

As described above, in the conventional ceiling-mounted luminaire, when the terminal block mounting bracket 25 to which the terminal block is fixed is fixed to the ballast storage box 10, the terminal block mounting bracket 25 is not used. The mounting piece A27 formed at one end is attached to the side edge 14 of the power line through hole 13 formed in the side surface 11 of the ballast box.
And the mounting piece B formed on the other side
28 was in contact with the back surface of the side portion 11, and the side portion of the ballast box and the terminal block mounting bracket were fastened together with the screw 32.

For this reason, the terminal block mounting bracket 25 is
It moves forward with 2 as a fulcrum. To prevent this,
The rear surface of the power line insertion hole 13 formed in the ballast storage box and the power line insertion surface 21 of the terminal block are substantially flush with each other, and the power line insertion surface is in contact with the lower surface of the lower end of the power line insertion hole. I have to.

Furthermore, when the power supply line is removed from the power supply insertion surface 21, an external force acts on the near side, so that the upper portion of the terminal block 20 protrudes outward. In order to prevent this, a screw 33 is screwed and fixed to the upper corner portion 26a of the terminal block mounting bracket 25 to prevent the terminal block mounting bracket 25 from moving forward.

The first problem is that the power line insertion surface 21 of the terminal block is arranged facing the power line through hole 13 formed in the side surface of the ballast box. Is likely to come into contact with the power supply line insertion surface of the terminal block, and the power supply lines inserted into the power supply insertion holes (not shown) formed in the power supply line insertion surface become conductive. In the worst case, a ballast etc. There was a problem that there was a risk of burning.

As a second problem, since many screws are used to mount the terminal block mounting bracket to the ballast storage box, there has been a problem that the mounting workability is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a ceiling-mounted luminaire having a terminal block mounting bracket that is safe and has good mounting properties.

[0020]

In order to achieve the above object, according to the present invention, there is provided a ceiling-mounted luminaire according to the present invention, comprising a terminal block mounted on an adjacent support bar and having a power insertion surface. A ceiling-mounted luminaire having a ballast storage box having a side portion formed with a power supply line through hole opposed to the power supply insertion surface portion while mounting a terminal block mounting bracket to which the power supply insertion surface portion is mounted. The terminal block mounting bracket is a substantially L-shaped terminal block mounting bracket main portion including a terminal block mounting surface portion to which the terminal block is mounted and a bent piece formed by bending one end of the terminal block mounting surface portion. And a hook piece formed at one end of the terminal block mounting bracket main portion and an engaging piece having an engaging convex portion at the tip formed at the other end,
On the side surface portion where the power supply wire through hole is formed, a slit hole is provided in which a hook piece of the terminal block mounting bracket is hooked from the inside, and on the back surface side of the other side surface portion adjacent to the side surface portion, A first cut-and-raised portion having an engaging hole into which the engaging convex portion of the engaging piece is inserted and engaged is cut and provided, and the engaging piece is provided near the first cut-and-raised portion. Is provided by cutting and raising a second cut-and-raised portion which is locked with the first cut-and-raised portion.

According to a second aspect of the present invention, there is provided the ceiling-mounted lighting device according to the present invention, wherein the terminal block mounting bracket is provided with a substantially inverted U-shaped notch in which a cut surface through which a wiring cord is inserted is curled. It is characterized by the following.

In the above construction, the terminal block is mounted on the terminal block mounting surface of the terminal block mounting bracket with a screw, and a hook piece is attached to one end of the terminal block mounting bracket and the other end thereof. It is provided with an engagement piece having an engagement convex portion, and a side portion of the ballast storage box, in which a power supply line through hole is formed,
A first hole in which a hook piece of the terminal block mounting bracket is hooked from the inside is provided, and an engaging piece of the terminal block mounting bracket is hooked and engaged on a side surface portion adjacent to the side surface portion.
And the second cut-and-raised part are provided, so that the terminal block mounting bracket can be easily and securely mounted on the ballast storage box without using a large number of screws and without backlash as in the prior art. If the height H1 of the terminal block mounting bracket is larger than the height H2 of the terminal block, the power line insertion surface of the terminal block can be arranged at a position where dust on the underside of the ceiling is less likely to spread. I can do it.

According to the second aspect of the present invention, the cut surface through which the wiring cord is inserted into the terminal block mounting surface of the terminal block mounting bracket is curled, and has a substantially inverted U-shape having a width slightly smaller than the outer diameter of the wiring cord. Since the notch is provided, the wiring cord can be inserted into the terminal block mounting bracket without damaging the wiring cord only by inserting the wiring cord into the notch.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Note that the same components as in the prior art will be described with the same reference numerals.

FIGS. 4 and 5 show a ceiling-mounted lighting fixture to which the ballast storage box according to the present invention is attached. The ceiling-mounted lighting fixture is provided on a mounting surface such as a ceiling 1. A pair of support bars 3, 3 are respectively installed on the back side of the ceiling along both sides in the longitudinal direction of the formed rectangular opening 2, and a ceiling-mounted lighting fixture is mounted on these support bars 3, 3. It is attached.

Below the ceiling-mounted luminaire, a trapezoidal reflector 4 having a downward opening is placed along the peripheral edge of the opening 2, and the reflector 4 has a longitudinal direction. The lamp sockets 6 and 6 are mounted in parallel to face each other, and a lamp 5 is detachably mounted between the lamp sockets 6 and 6.

As shown in FIG. 4, a ballast storage box 10 containing a ballast 7 for stably lighting a lamp is mounted on the ceiling-mounted lighting fixture by a method (not shown).

FIGS. 1 to 3 show a ballast storage box, a terminal block disposed in the ballast storage box, and a terminal block mounting bracket to which the terminal block is mounted.
Has a box shape with an opening that opens downward.

At the corner of the ballast box 10, a terminal block mounting bracket 40 to which the terminal block 20 is mounted is mounted.
The terminal block mounting bracket 40 is formed by bending a terminal block mounting surface portion 42 in which a plurality of mounting holes 15 for mounting the terminal block 20 with screws 31 are formed, and a right angle from an end of the terminal block mounting surface portion 42. The terminal block mounting bracket main portion 41 having a substantially L-shape including the bent piece portion 43, and the terminal block mounting bracket main portion is bent outward at a right angle from an end of the bent piece portion 43 of the main portion. A hook piece 44 and an engaging piece 45 which is bent at a right angle from the end of the terminal block mounting surface portion 42 of the main part of the terminal block mounting bracket toward the near side and has an engaging convex portion 45a at the tip end are provided.

Further, a substantially semi-circular cut surface through which the wiring cord 60 is inserted is formed into a substantially inverted U-shape having a width slightly smaller than the outer diameter of the curled wiring cord at the lower end of the terminal block mounting surface portion 42. Is formed. The notch 46 is open at the bottom.

At the end of the side surface portion 11 of the ballast storage box 10, a substantially rectangular power supply line through hole 13 is formed, as in the prior art.
In addition, on the left side of the power supply line through hole 13, a hook piece 44 of a terminal block mounting bracket is provided with a slit hole 5 formed in a slit shape in a height direction to be hooked from the inside.
0 is drilled.

Further, an engaging hole 52 into which the engaging convex portion 45a of the engaging piece 45 of the terminal block mounting bracket is inserted penetrates in the longitudinal direction on the back surface of the side surface portion 11a adjacent to the side surface portion 11. The first cut-and-raised portion 51 is cut and raised, and the engaging piece 45 inserted into the engaging hole of the first cut-and-raised portion is provided on the right side of the first cut-and-raised portion 51. A second cut-and-raised portion 55 locked between the cut-and-raised portion 51 is cut and raised.

Terminal block 20 mounted on terminal block mounting bracket
Has a substantially rectangular parallelepiped shape, and is the same as the prior art, and has a power line insertion surface 21 provided opposite to the power line through hole 13 formed in the ballast box, and a back surface of the power line insertion surface 21. A plurality of screw holes (not shown) into which the screws 31 are screwed are provided on the side.

The procedure for assembling the terminal block mounting bracket into the ballast storage box will be described with reference to FIGS. Note that FIG.
FIG. 3 and FIG. 3 show a state in which a terminal block mounting bracket to which a terminal block is fixed is attached to a ballast storage box.

Before attaching the terminal block mounting bracket 40 to the ballast box 10 beforehand, the terminal block 20 is brought into contact with the terminal block mounting surface 42 of the terminal block mounting bracket with the power supply insertion surface 21 facing up. The screw 31 is inserted into the mounting hole 15 on the terminal block mounting surface, and screwed into a screw hole (not shown) formed on the back side of the terminal block 20 to fix the terminal block to the terminal block mounting bracket.

First, as shown in FIG. 1, the hook 44 of the terminal block mounting bracket is inserted from the inside into the slit hole 50 of the ballast storage box, and the terminal block mounting bracket is attached to the hook block 44. Rotate clockwise as a fulcrum.

Then, the side portion 11 of the ballast storage box 10
a, while inserting the engagement protrusion 45a of the terminal block mounting bracket into the engagement hole 52 of the first cut-and-raised portion 51 cut and raised by the engagement piece 45.
Over the second cut-and-raised portion 55, the engagement piece 45 of the terminal block mounting bracket abuts and locks the first cut-and-raised portion 51 and the second cut-and-raised portion 55. .

By setting the height H2 of the terminal block to be lower than the height H1 of the bent piece 43 of the terminal block mounting bracket,
The power supply insertion surface 21 of the terminal block can be arranged on the back side of the power supply wire passage hole 13.

The operation of the above embodiment will be described.

The hook 44 of the terminal block mounting bracket is inserted into the slit hole 50 of the ballast box from the inside, and the terminal block mounting bracket is rotated clockwise about the hook block as a fulcrum. Then, while inserting the engaging protrusion of the terminal block mounting bracket into the engaging hole of the first cut-and-raised portion cut and raised on the side surface of the ballast storage box and rotating it clockwise, the engaging piece becomes Second
The engaging piece is locked between the first cut-and-raised portion and the second cut-and-raised portion so as to stabilize the terminal block mounting bracket easily without play. Can be attached to the container box.

Further, when the power supply line 58 inserted into the power supply insertion hole formed in the terminal block is detached from the power supply insertion surface 21 of the terminal block, an external force acts on the near side, but the engagement piece of the terminal block mounting bracket is used. The engagement protrusion of the first engagement with the engagement hole of the first cut-and-raised portion formed along the direction of removing the power line,
The engagement piece is locked between the first cut-and-raised portion and the second cut-and-raised portion.

From this, the terminal block mounted on the terminal block mounting bracket hardly moves to the near side with the engaging piece as a fulcrum, and the height H1 of the bent piece portion of the terminal block mounting bracket is set to the terminal height. By mounting the terminal block mounting bracket on the ballast storage box with the height being higher than the height H2 of the base, the power supply insertion surface 21 of the terminal block is arranged on the back side of the power supply line through hole 13 as shown in FIG. can do.

For this reason, the power supply line insertion surface of the terminal block can be arranged at a position where the dust behind the ceiling does not easily come into contact with the power supply line. There is no danger that the will become conductive.

As described above, the terminal block mounting bracket can be easily mounted on the ballast storage box without using a large number of screws as in the prior art. A good terminal block mounting bracket can be provided.

Further, the wiring cord can be inserted into the terminal block mounting bracket only by inserting the wiring cord into the notch.

[0046]

As described above in detail, according to the first aspect of the present invention, the power line insertion surface of the terminal block can be recessed at an arbitrary position from the power line through hole of the ballast storage box. ,
Dust from behind the ceiling is unlikely to directly hit the power line insertion surface of the terminal block, and there is no risk of the terminal block being burned. Further, the terminal block mounting bracket is fitted into the ballast storage box, so that the mounting workability is good.

According to the second aspect of the present invention, since the cut surface through which the power cord is inserted is provided with a substantially U-shaped notch in the terminal block mounting surface of the terminal block mounting bracket, the wiring code is also cut. Simply by inserting it into the notch, it is possible to insert it into the terminal block mounting bracket without damaging the wiring cord.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a ballast storage box according to a first embodiment of the present invention and a terminal block mounting bracket to which a ballast mounted on the ballast storage box is mounted.

FIG. 2 is a perspective view showing a state where a terminal block mounting bracket is mounted on the ballast storage box in the first embodiment.

FIG. 3 is a top view showing a state where the terminal block mounting bracket is mounted on the ballast storage box in the first embodiment.

FIG. 4 is a perspective view showing a ceiling-mounted lighting device having a general ballast storage box.

FIG. 5 is a side view showing a ceiling-mounted lighting fixture having a general ballast storage box.

FIG. 6 is an exploded perspective view showing a ballast accommodating box according to the related art and a terminal block mounting bracket to which a ballast attached to the ballast accommodating box is attached.

FIG. 7 is a perspective view showing a state where a terminal block mounting bracket is mounted on a ballast storage box according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 ... Support bar, 10 ... Ballast storage box, 11 ... Side wall part, 11a ... Side wall part, 13 ... Power line through hole of ballast storage box, 20 ... Terminal block, 40 ... Terminal block mounting bracket, 41 ... Terminal block Main part of mounting bracket, 42: Terminal block mounting surface part, 43: Bending piece part, 44: Hook piece of terminal block mounting metal main part, 45: Engagement piece of terminal block mounting metal, 45a: Engagement of engagement piece Projecting portion, 46: Notch, 50: Slit hole, 51: First cut and raised portion, 52: Engagement hole, 55: Second cut and raised portion, 60: Wiring cord.

Claims (2)

[Claims] A terminal block mounting bracket mounted on an adjacent support bar and having a terminal block having a power supply insertion surface mounted thereon is mounted therein, and a power supply line through hole is formed facing the power supply insertion surface. In a ceiling-mounted lighting device provided with a ballast storage box having a side surface portion, the terminal block mounting bracket is bent from a terminal block mounting surface portion to which the terminal block is mounted and one end of the terminal block mounting surface portion. A main part of a substantially L-shaped terminal block mounting bracket composed of a bent piece part to be formed, a hook piece formed at one end of the main part of the terminal block mounting bracket, and a tip formed at the other end. The power supply line through-hole is formed on the side surface portion formed with an engagement piece having a mating convex portion, and a slit hole is formed on the side surface portion where the hooking piece of the terminal block mounting bracket is hooked from the inside. On the back side of the other adjacent side surface, A first cut-and-raised portion having an engaging hole into which the engaging projection of the engaging piece is inserted and engaged is cut and provided, and the engaging piece is provided near the first cut-and-raised portion. Wherein the second cut-and-raised portion for locking the first cut-and-raised portion with the first cut-and-raised portion is provided. 2. The lighting fixture according to claim 1, wherein the terminal block mounting bracket is provided with a substantially inverted U-shaped notch in which a cut surface through which a wiring cord is inserted is curled.