JP2001307543A - Ballast mounting structure for luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ballast mounting structure for a luminaire whose electronic ballast can be easily removed from a base plate with such a simple tool as pliers or the like. SOLUTION: Semicircular notched holes 12a are formed in a case for an electronic ballast 12, while projecting pieces 11a are formed at corresponding positions in a base plate 11. An outside interval A2 between a pair of the notched holes 12a and an outside interval A1 between the bases of a pair of the projecting pieces 11a corresponding to the holes 12a are set so as to satisfy a relation A1>A2. A pair of the projecting pieces 11a is inserted through a pair of the notched holes 12a and then is bent outwards, so that the case for the electronic ballast 12 is fixed to the base plate 11. Because of the relation A1>A2, a pair of the projecting pieces 11a inserted through a pair of the notched holes 12a expands the outside interval A2 of a pair of the notched holes 12a and rolls in the outside edges thereof, so that the case for the electronic ballast 12 is fixed to the base plate 11 without bending the projecting pieces 11a by full 180 deg..

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 in which an electronic ballast is mounted on a base plate of a lighting fixture having an electronic ballast for lighting a fluorescent lamp.

[0002]

2. Description of the Related Art FIG. 1 shows an exploded view of a lighting apparatus of this kind. This lighting device includes two fluorescent lamps 101, a reflector 102, and a base plate 103. The receptacle 104 of the fluorescent lamp 101 and the electronic ballast 105 are attached to the base plate 103. The electronic ballast 105 is a so-called inverter type in which a printed circuit board unit for illuminating the fluorescent lamp 101 at a high frequency is housed in a metal case, and is considerably lighter than a ballast consisting of an old type coil and core.

FIG. 2 shows a conventional ballast mounting structure for mounting an electronic ballast 105 on a base plate 103. FIG. 2 (a) is a plan view, and FIG. 2 (b) is a side view. A cutout hole 105 a is formed in the case of the electronic ballast 105, and a cut-and-raised piece 103 a is formed at a corresponding position of the base plate 103. And the cut and raised piece 103a
The electronic ballast 105 is fixed to the base plate 103 by inserting it into the notch hole 105a and bending it approximately 180 degrees.

[0004]

When the electronic ballast 105 of a lighting fixture as described above breaks down, the electronic ballast 1
If it is attempted to remove the electronic ballast 105 from the base plate 103 with the conventional ballast mounting structure, it is difficult to remove the electronic ballast 105 from the base plate 103 by replacing it with a new one. That is, since the cut and raised piece 103a of the base plate 103 is bent substantially 180 degrees and is in close contact with the case of the electronic ballast 105, the cut and raised piece 103a is
Cannot be gripped with pliers or the like,
In order to undo the bending of a, it was necessary to use a special tool such as an electric drill. For this reason, there is a problem that the preparation and transportation of tools such as an electric drill are required, and that the time required for the replacement of the electronic ballast becomes long.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a ballast mounting structure for a lighting fixture in which an electronic ballast can be easily removed from a base plate by using a simple tool such as pliers. With the goal.

[0006]

SUMMARY OF THE INVENTION A ballast mounting structure for a lighting fixture according to the present invention is a ballast mounting for a lighting fixture in which an electronic ballast is mounted on a base plate of a lighting fixture incorporating an electronic ballast for lighting a fluorescent lamp. In the structure, a cut-and-raised piece formed on one of the case of the electronic ballast and the base plate is inserted into a cutout hole formed on the other side and then bent, and the bending is stopped at an angle smaller than 180 degrees. Thus, the case of the electronic ballast is detachably engaged with the base plate.

[0007] More specifically, the gap between the tip of the cut-and-raised piece and the case of the base plate or the electronic ballast is 2 mm.
Preferably, a gap of about 5 mm is formed. Thus, the electronic ballast can be easily removed from the base plate using a simple tool such as pliers.

A second configuration of the ballast mounting structure for a lighting fixture according to the present invention is characterized in that a cut-and-raised piece formed on one of the case and the base plate of the electronic ballast is inserted into a cutout hole formed on the other. The case of the electronic ballast is detachably engaged with the base plate by being turned approximately 45 degrees after the insertion.

In a third configuration of the ballast mounting structure for a lighting fixture according to the present invention, a first cut-and-raised piece is formed in one of the case of the electronic ballast and the base plate, and a cutout hole is formed in the other. And a second cut-and-raised piece is formed on one side of the cut-out hole. The electronic ballast case is removably engaged with the base plate by being bent at a right angle.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIGS. 3 (a) to 3 (c) and FIGS. 4 (a) and 4 (b) show a ballast mounting structure for a lighting fixture according to a first embodiment of the present invention. . 3A is a plan view, FIG. 3B is a side view, and FIG. 3C is a partially enlarged view. FIG. 4A is a plan view of a mounting portion of the electronic ballast, and FIG. 4B is a side view of a base plate of the lighting fixture.

As shown in FIGS. 4 (a) and 4 (b), a semicircular cutout 12a is formed in the case of the electronic ballast 12, and a cut-out piece 11 is formed at a corresponding position on the base plate 11.
a is formed. Outer interval A between a pair of notches 12a
2 and the outer interval A of the base of the corresponding pair of cut and raised pieces 11a
The relationship with 1 is set so that A1> A2.

As shown in FIGS. 3 (a) to 3 (c), the case of the electronic ballast 12 is attached to the base plate 11 by inserting a pair of cut-and-raised pieces 11a into a pair of cutout holes 12a and then bending outward. It is fixed. At this time, A
According to the relationship of 1> A2, the pair of cut-and-raised pieces 11a rolls the outer side of the cutout hole 12a so as to push out the outer space A2 between the pair of cutout holes 12a. Thereby, the cut and raised piece 1
The case of the electronic ballast 12 is fixed to the base plate 11 without completely bending 1 a by 180 degrees.

Finally, the bending of the cut and raised piece 11a is stopped in a state where a gap d between the tip of the cut and raised piece 11a and the case of the electronic ballast 12 is 2 to 5 mm. In this way, when removing the electronic ballast 12, the tip of the cut-and-raised piece 11a can be easily sandwiched between general-purpose tools such as pliers,
The bent state of the cut and raised piece 11a can be substantially returned to the initial state shown in FIG.

(Embodiment 2) FIGS. 5 (a) and 5 (b)
9 shows a ballast mounting structure for a lighting fixture according to a second embodiment. FIG. 5A is a plan view, and FIG. 5B is a side view. In this embodiment, contrary to the first embodiment, a pair of semicircular notches 21a are formed in the base plate 21.
Are formed, and a pair of cut-and-raised pieces 22 a are formed at corresponding positions on the case of the electronic ballast 22. The relationship between the outer space B2 between the pair of cutout holes 21a and the outer space B1 at the base of the corresponding pair of cut-and-raised pieces 22a is B1> B2.
It is set to be.

A pair of cut-up pieces 22a are inserted into a pair of notches 21a.
After that, the case of the electronic ballast 22 is fixed to the base plate 21 by bending it outward. At this time, due to the relationship of B1> B2 described above, the pair of cut-and-raised pieces 22a rolls the outer side of the cutout hole 21a so as to push out the outer space B2 between the pair of cutout holes 21a.
Thereby, the case of the electronic ballast 22 is fixed to the base plate 21 without completely bending the cut-and-raised piece 22a by 180 degrees.

Finally, the bending of the cut and raised piece 22a is stopped in a state where a gap d between the tip of the cut and raised piece 22a and the base plate 21 is 2 to 5 mm. Thus, when the electronic ballast 22 is removed, the cut-and-raised piece 22a
Can be easily sandwiched between general-purpose tools such as pliers, and the cut-and-raised piece 22a can be substantially returned to the state before bending.

(Embodiment 3) FIGS. 6 (a) and 6 (b)
9 shows a ballast mounting structure for a lighting fixture according to a third embodiment. FIG. 6A is a plan view, and FIG. 6B is a side view. In this embodiment, as in the first embodiment, a pair of semicircular cutout holes 32a are formed in the case of the electronic ballast 32, and a pair of cut-and-raised pieces 31a are formed at corresponding positions on the base plate 31. Is formed. However, the pair of cut-and-raised pieces 31a is formed so as to be bent inward instead of being bent outward. In accordance with this, the pair of semicircular cutout holes 32a are formed so that the outside is a circumference and the inside is a straight side. The relationship between the inner space C2 between the pair of cutout holes 32a and the inner space C1 at the base of the corresponding pair of cut-and-raised pieces 31a is set so as to satisfy C1 <C2.

A pair of cut-up pieces 31a are inserted into a pair of cutout holes 32a.
Then, the case of the electronic ballast 32 is fixed to the base plate 31 by being bent inward after being inserted. At this time, due to the above-described relationship of C1 <C2, the pair of cut-and-raised pieces 31a rolls the inner side of the cutout hole 32a so as to press and shrink the inner space C2 between the pair of cutout holes 32a.
Thus, the case of the electronic ballast 32 is fixed to the base plate 31 without completely bending the cut-and-raised piece 31a by 180 degrees.

Finally, the bending of the cut and raised piece 31a is stopped in a state where a gap d between the tip of the cut and raised piece 31a and the case of the electronic ballast 32 is 2 to 5 mm. By so doing, when removing the electronic ballast 32, the tip of the cut-and-raised piece 31a is easily pinched with a general-purpose tool such as pliers,
The cut-and-raised piece 31a can be almost returned to the state before bending.

(Embodiment 4) FIGS. 7 (a) and 7 (b)
9 shows a ballast mounting structure for a lighting fixture according to a fourth embodiment. FIG. 7A is a plan view, and FIG. 7B is a side view. In this embodiment, contrary to the third embodiment, a pair of semicircular notches 41a are formed in the base plate 41.
Are formed, and a pair of cut-and-raised pieces 42 a is formed at corresponding positions on the case of the electronic ballast 42. The relationship between the inner distance D2 between the pair of cutout holes 41a and the inner distance D1 at the base of the corresponding pair of cut-and-raised pieces 42a is set so that D1 <D2.

A pair of cut-up pieces 42a is formed by a pair of cut-out holes 41a.
After that, the case of the electronic ballast 42 is fixed to the base plate 41 by bending it inward. At this time, due to the relationship of D1 <D2 described above, the pair of cut-and-raised pieces 42a rolls the inner side of the cutout hole 41a so as to compress the inner space D2 between the pair of cutout holes 41a.
Thereby, the case of the electronic ballast 42 is fixed to the base plate 41 without completely bending the cut-and-raised piece 42a by 180 degrees.

Finally, the bending of the cut and raised piece 42a is stopped in a state where a gap d between the tip of the cut and raised piece 42a and the base plate 41 is 2 to 5 mm. By doing so, when the electronic ballast 42 is removed, the cut and raised piece 42a
Can easily be sandwiched between general-purpose tools such as pliers, and the cut-and-raised piece 42a can be substantially returned to a state before bending.

(Embodiment 5) FIGS. 8A and 8B show
14 shows a ballast mounting structure for a lighting fixture according to a fifth embodiment. FIG. 8A is a plan view, and FIG. 8B is a side view. This embodiment is similar to the first embodiment, except that a pair of cut and raised pieces 5 formed on a base plate 51 are provided.
After inserting 1a into a pair of rectangular cutouts 52a formed in the case of the electronic ballast 52, the cut-and-raised piece 51a is rotated (twisted) by approximately 45 degrees instead of bending, so that the case of the electronic ballast 52 is formed. Is fixed to the base plate 51.

In this case, since the case of the electronic ballast 52 is fixed to the base plate 51 while the cut and raised piece 51a stands substantially perpendicular to the base plate 51, the cut and raised piece 51a is fixed by a general-purpose tool such as pliers. The electronic ballast 52 can be easily removed from the base plate 51 by being easily sandwiched and substantially returned to a state before rotation (twist).

(Embodiment 6) FIGS. 9A and 9B show
14 shows a ballast mounting structure for a lighting fixture according to a sixth embodiment. FIG. 9A is a plan view, and FIG. 9B is a side view. In this embodiment, contrary to the fifth embodiment, a pair of rectangular cutout holes 61a are formed in the base plate 61, and a pair of cut and raised pieces 62a are formed at corresponding positions of the case of the electronic ballast 62. ing. After the cut-and-raised piece 62a is inserted into the cutout hole 61a, the cut-and-raised piece 62a is rotated (twisted) by approximately 45 degrees to thereby obtain the electronic ballast 62.
Is fixed to the base plate 61.

Also in this case, the electronic ballast 62 is held while the cut-and-raised piece 62a stands substantially perpendicular to the base plate 61.
Is fixed to the base plate 61,
The electronic ballast 62 can be removed from the base plate 61 by easily sandwiching the cut-and-raised piece 62 a with a general-purpose tool such as pliers, and substantially returning the state before rotation (twisting).

(Embodiment 7) FIGS. 10A and 10B
Shows a ballast mounting structure for a lighting fixture according to the seventh embodiment. FIG. 10A is a plan view, and FIG.
(B) is a side view. In this embodiment, a pair of cut-and-raised pieces (first cut-and-raised pieces) 71a are formed in the base plate 71, and a pair of rectangular cutout holes 72a are formed at corresponding positions on the case of the electronic ballast 72. With the notch 7
A cut and raised piece (second cut and raised piece) 72b is formed on one side outside 2a. Then, the first cut-and-raised piece 71a is
After passing through 2a, the case of the electronic ballast 72 is fixed to the base plate 71 by bending outwardly at a substantially right angle with the tip of the second cut and raised piece 72b as a fulcrum.

In this case, since the first cut-and-raised piece 71a is bent substantially 90 degrees from the state of standing substantially perpendicular to the base plate 71, the tip is sandwiched by a general-purpose tool such as pliers. The electronic ballast 72 can be easily removed from the base plate 71 by simply returning to the state before bending.

(Embodiment 8) FIGS. 11A and 11B
Shows a ballast mounting structure for a lighting fixture according to an eighth embodiment. FIG. 11A is a plan view, and FIG.
(B) is a side view. In this embodiment, contrary to the seventh embodiment, a pair of cut-and-raised pieces (first cut-and-raised pieces) 82 a is formed in the case of the electronic ballast 82, and a pair of cut-and-raised pieces are formed at corresponding positions on the base plate 81. A rectangular cutout 81a is formed, and a cutout piece (second cutout piece) 81b is formed on one side outside the cutout hole 81a. Then, after inserting the first cut-and-raised piece 82a into the notch hole 81a, the case of the electronic ballast 82 is bent outward at a substantially right angle with the tip of the second cut-and-raised piece 81b as a fulcrum. It is fixed to.

In this case as well, the first cut-and-raised piece 82a is bent substantially 90 degrees from the state of standing substantially perpendicular to the base plate 81. Therefore, the tip is bent with a general-purpose tool such as pliers. The electronic ballast 82 can be easily detached from the base plate 81 by sandwiching and easily returning to a state before the bending.

(Embodiment 9) FIGS. 12A and 12B
Shows a ballast mounting structure for a lighting fixture according to the ninth embodiment. FIG. 12A is a plan view, and FIG.
(B) is a side view. In this embodiment, a pair of opposing side surfaces of the case of the electronic ballast 92 (the base plate 9 extends along the outer surface of the rising portion 92a for reinforcement).
A pair of cut-and-raised pieces 91a is formed on one. The case of the electronic ballast 92 is fixed to the base plate 91 by bending the tip of the cut-and-raised piece 91a inward at a substantially right angle with the tip of the rising portion 92a as a fulcrum.

In this case, the cut-and-raised piece 91a stands substantially vertically with respect to the base plate 91, and only the distal end portion has approximately 9
Since it is bent at 0 degrees, the electronic ballast 92 can be detached from the base plate 91 by easily returning the front end of the electronic ballast 92 to the state before bending by sandwiching the tip with a general-purpose tool such as pliers.

(Embodiment 10) FIGS. 13A and 13B
Shows a ballast mounting structure for a lighting fixture according to the tenth embodiment. FIG. 13A is a plan view, and FIG.
(B) is a side view. In this embodiment, a pair of cutout holes 94a are formed in the case of the electronic ballast 94, and a pair of cutout pieces 93a are formed at corresponding positions on the base plate 93.
Are formed. As shown in FIG.
As can be seen from (a), the inner wide part and the outer narrow part are connected. Correspondingly, the pair of cut-and-raised pieces 93a is formed such that the root portion is narrow and the distal end portion is wide. Then, the pair of cut and raised pieces 93a are slightly raised (about 10 to 30 degrees) and the
After being inserted into a, by being bent outward,
As shown in FIGS. 13A and 13B, the base plate 93 is raised substantially perpendicular to the base plate 93. At this time, the base portion (narrow portion) of the cut-and-raised piece 93a engages with the narrow portion outside the cutout hole 94a, so that the electronic ballast 94 is formed.
Is fixed so as not to fall off from the base plate 93.

In this case, since the case of the electronic ballast 94 is fixed to the base plate 93 while the cut-and-raised piece 93a stands substantially perpendicular to the base plate 93, the cut-and-raised piece 93a is fixed with a general-purpose tool such as pliers. The electronic ballast 94 can be easily removed from the base plate 93 by being easily sandwiched and almost returned to a state before being raised.

The ballast mounting structure of the present invention has been described with reference to various embodiments. In any of the embodiments, by utilizing the fact that the electronic ballast is lightweight and does not require much mounting strength, it can be easily returned to the original state by sandwiching the cut and raised piece with a general-purpose tool such as pliers. The use of a simple mounting method facilitates replacement of the electronic ballast. Note that the present invention is not limited to the above embodiment, and may be implemented in other forms.

[0037]

As described above, according to the ballast mounting structure for a lighting fixture of the present invention, the electronic ballast can be easily removed from the base plate using a simple tool such as pliers.

[0038]

[Brief description of the drawings]

FIG. 1 is an exploded view of a lighting device to which the present invention is applied.

FIG. 2 is a diagram showing a ballast mounting structure for a conventional lighting fixture.

FIG. 3 is a view showing a ballast mounting structure for a lighting fixture according to the first embodiment of the present invention.

FIG. 4 is a view showing a mounting portion of an electronic ballast and a base plate of a lighting device according to the first embodiment of the present invention.

FIG. 5 is a view showing a ballast mounting structure for a lighting fixture according to a second embodiment of the present invention.

FIG. 6 is a view showing a ballast mounting structure for a lighting fixture according to a third embodiment of the present invention.

FIG. 7 is a view showing a ballast mounting structure for a lighting fixture according to a fourth embodiment of the present invention.

FIG. 8 is a diagram showing a ballast mounting structure for a lighting fixture according to a fifth embodiment of the present invention.

FIG. 9 is a view showing a ballast mounting structure for a lighting fixture according to a sixth embodiment of the present invention.

FIG. 10 is a view showing a ballast mounting structure for a lighting fixture according to a seventh embodiment of the present invention.

FIG. 11 is a view showing a ballast mounting structure for a lighting fixture according to an eighth embodiment of the present invention.

FIG. 12 is a view showing a ballast mounting structure for a lighting fixture according to a ninth embodiment of the present invention.

FIG. 13 is a view showing a ballast mounting structure for a lighting fixture according to a tenth embodiment of the present invention.

[Explanation of symbols]

11, 21, 31, 41, 51, 61, 71, 81, 9
1,93 Base plate 12,22,32,42,52,62,72,82,9
2,94 Electronic ballasts 11a, 22a, 31a, 42a, 51a, 62a, 7
1a, 82a, 91a, 93a Cut and raised pieces 12a, 21a, 32a, 41a, 52a, 61a, 7
2a, 81a, 94a notched holes

Claims (4)

[Claims] An electronic ballast mounting structure for mounting an electronic ballast on a base plate of a lighting device having an electronic ballast for lighting a fluorescent lamp, wherein the electronic ballast is mounted on one of a case of the electronic ballast and the base plate. The cut-and-raised piece is inserted into the cutout hole formed on the other side, and then bent. At this time, the bending is stopped at an angle smaller than 180 degrees, whereby the case of the electronic ballast is removed from the base plate. A ballast mounting structure for a lighting fixture, wherein the ballast mounting structure is engaged with the ballast. 2. The lighting fixture according to claim 1, wherein a gap of 2 to 5 mm is formed between the tip of the cut and raised piece and the base plate or the case of the electronic ballast. Ballast mounting structure. 3. A ballast mounting structure for a lighting fixture in which an electronic ballast is mounted on a base plate of a lighting fixture incorporating an electronic ballast for lighting a fluorescent lamp, wherein one of the case of the electronic ballast and the base plate is provided. The case of the electronic ballast is detachably engaged with the base plate by inserting the formed cut-and-raised piece into the cutout hole formed on the other side and then twisting the cut-out piece by approximately 45 degrees. Lighting fixture mounting structure. 4. A ballast mounting structure for a lighting fixture in which an electronic ballast is mounted on a base plate of a lighting fixture having a built-in electronic ballast for lighting a fluorescent lamp, wherein one of the case of the electronic ballast and the base plate is provided. A first cut-and-raised piece is formed, a notch-hole is formed on the other side, and a second cut-and-raised piece is formed on one side of the notch-hole. After the first cut-and-raised piece is inserted into the notch-hole, The case of the electronic ballast is removably engaged with the base plate by being bent at a substantially right angle with the tip of the second cut and raised piece as a fulcrum. Ballast mounting structure.