JPH0528806A - Louver for lighting fixture - Google Patents

Abstract

PURPOSE:To provide a louver for lighting fixture, which can be assembled easily and with which louver pieces be coupled certainly. CONSTITUTION:A louver for lighting fixture comprises a No.1 louver piece 1 and a plurality of No.2 louver pieces 2. The No.1 louver piece 1 is embodied with approx. V-section and has stepped seats 4 to enlarge the spacing of an angle part 5 with the apex opened and situated above between a V-part 3 at the bottom and the angle part 5 situated at the top, wherein a plurality of slits 6 are formed at each seat 4. No.2 louver pieces 2 have at the upper edge a projecting piece 10 for folding to be inserted through the slits 6 and intersect the No.1 louver piece 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a louver for lighting equipment.

[0002]

2. Description of the Related Art FIGS. 6 and 7 show a conventional example. That is, in this louver for a lighting fixture, a crossing slit 51 is formed at the bottom of a first louver piece 50 having a substantially V-shaped cross section in which the cross section of each piece draws an approximate arc, and the louver for locking each piece. The slit hole 52 is formed. The cross section of the second louver piece 53 is also approximately V
A notch 54 for intersection is formed at the upper end of the character shape, an engaging piece 55 that engages with the slit hole 52 is formed at the inner edge of the notch 54, and the bottom portion 56 of the notch 54 can be engaged with the slit 51. ing. This is done by narrowing the width of the second louver piece 53 as shown by an arrow A in FIG. 6 and inserting it into the slit 51 of the first louver piece 50 as shown by an arrow B so that the bottom portion 56 is engaged with the slit 51 and engaged. It is assembled by engaging the joint piece 55 with the slit hole 52, and the coupled state is held by friction locking.

[0003]

However, in the louver for a lighting device, when the second louver piece 53 is pulled in the direction opposite to the arrow B, the second louver piece 53 may come off from the first louver piece 50. was there. On the other hand, as shown in FIG. 8, slit holes 5 are formed above and below each piece of the V-shaped first louver piece 57.
8 and 59 are formed, and the engaging pieces 60 and 61 that engage with the slit holes 58 and 59 are provided in the notch 6 of the second louver piece 62.
It was conceivable that the engaging pieces 60 and 61 are formed on the inner edges of the groove 3, and the engaging pieces 60 and 61 are fitted into the slit holes 58 and 59 and then bent.

However, it is difficult to fold the engaging piece 61 because the distance between the bottoms of the first louver pieces 57 is small. Therefore, an object of the present invention is to provide a louver for a lighting fixture which can surely couple the louver pieces and is easy to assemble.

[0005]

A louver for a lighting fixture according to the present invention has a substantially V-shaped cross section, and has a reverse V-shaped portion between the V-shaped portion on the bottom side and the inverted C-shaped portion on the upper end side. The first louver piece having a stepped portion for increasing the distance between the square-shaped portions and having a plurality of slit holes formed in the stepped portion, and a bending projection piece penetrating the slit hole The first on the edge side
And a plurality of second louver pieces intersecting the louver piece of No.

[0006]

According to the structure of the present invention, the projection piece of the second louver piece is fitted in the slit hole of the stepped portion of the first louver piece,
The second louver piece is attached to the first louver piece by bending the protrusion piece. In this case, since the stepped portion inside the first louver piece can be formed relatively wide, the projection piece can be easily bent, and the caulking treatment can be performed along the longitudinal direction of the first louver piece. All the protruding pieces can be bent at a time by moving the tool, which facilitates assembly. Further, the second louver piece is surely coupled to the first louver piece by bending the protrusion piece.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, the louver for a lighting fixture has a first louver piece 1 and a plurality of second louver pieces 2. The first louver piece 1 has a substantially V-shaped cross section, and the interval between the inverted C-shaped portions 5 is increased between the V-shaped portion 3 on the bottom side and the inverted C-shaped portion 5 on the upper end side. Having the step portion 4
A plurality of slit holes 6 are formed in each. In the embodiment, the first louver piece 1 is a central reflecting mirror, and the V-shaped portion 3
The cross-sectional shape of the inverted C-shaped portion 5 is a parabola whose center is the cross-sectional center of the straight tube fluorescent lamp 7. Further, side reflecting mirrors 8 facing the central reflecting mirror are arranged in parallel on both sides of the first louver piece 1, and the sectional shape of this side reflecting mirror 8 is also a parabola whose focal point is the sectional center of the straight tube fluorescent lamp 7. ing.

The slit hole 6 of the stepped portion 4 is provided at the intersection of the second louver piece 2, and the slit 9 having a height of about half is formed in the V-shaped portion 3 corresponding to each slit hole 6. ing. The plurality of second louver pieces 2 intersect with the first louver piece 1 with a bending projection piece 10 penetrating the slit hole 6 on the upper edge side. In the embodiment, the V-shaped portion 3 is provided on the upper edge side of the rectangular plate.
To form a V-shaped notch 11 of about half height that fits in
Protrusion piece 10 that fits into the slit hole 6 near the opening edge
And the engaging pieces 13 that engage with the slit holes 12 of the side reflecting mirror 8 are formed on both sides. As shown in FIG. 2, the notch 11 is engaged with the slit 9 of the V-shaped portion 3 to assemble the projection piece 1 as shown in FIG.
0 is fitted into the slit hole 6, and the caulking jig 1 is attached as shown in FIG.
By moving 4 in the longitudinal direction C along the stepped portion 4, all the protruding pieces 10 are bent in the same direction at a time. The engaging piece 13 that engages with the side reflecting mirror 8 is also bent in the same manner.

According to this embodiment, the projection piece 1 of the second louver piece 2 is inserted into the slit hole 6 of the stepped portion 4 of the first louver piece 1.
The second louver piece 2 is attached to the first louver piece 1 by fitting 0 and bending the projection piece 10. In this case, since the step portion 4 inside the first louver piece 1 can be formed relatively wide, the protrusion piece 10 can be easily bent, and moreover, along the longitudinal direction of the first louver piece 1. By moving the caulking jig 14, all the protruding pieces 1 at a time
Since 0 can be bent, it is easy to assemble. Moreover, the second louver piece 2 is reliably coupled to the first louver piece 1 by bending the projection piece 10.

Since the second louver piece 2 does not have to be narrowed and fitted as in the conventional case, the dimensional accuracy can be improved. Although the engaging piece 13 that engages with the side reflecting mirror 8 is provided, the second louver piece 2 may not be held only by the first louver piece 1. The second embodiment of the present invention is shown in FIG. That is, in this louver for a lighting fixture, the second louver piece 2 has a substantially V-shaped cross section, and has a notch 11 and a projection piece 10 at the same position of each piece. Corresponding to this, the slit 9 of the first louver piece 1
And a pair of slit holes 6 of the step portion 4 are formed for each second louver piece 2.

As for assembly, the bottom of the notch 11 of the second louver piece 2 is engaged with the slit 9 in the same manner as in the first embodiment, and the projection piece 1 is formed.
0 is fitted in the slit hole 6 and bent by the caulking jig 14. A third embodiment of the present invention is shown in FIG. That is, this louver for a lighting fixture is the same as that of the second embodiment,
Extending pieces 17 are formed along the inverted C-shaped portion 5 and the side reflecting mirror (not shown) of the first louver piece 1, and the slit hole 17 is formed in the inverted C-shaped portion 5 and the slit is formed. The extension piece 15 is formed with an engagement piece 18 that engages with the hole 17. The engagement piece 18 is also formed by the caulking jig 14 by the projection piece 1.
It is folded at the same time as the 0 turn.

At the intersection of the first louver piece 1 and the second louver piece 2, in the above embodiment, the slit 9 is formed in the first louver piece 1 and the notch 11 is formed in the second louver piece 2. However, it may be formed on only one of them.

[0013]

The louver for a lighting fixture of the present invention has a substantially V-shaped cross section, and the inverted C-shaped portion is formed between the V-shaped portion on the bottom side and the inverted C-shaped portion on the upper end side. It has a first louver piece having a stepped portion for increasing the interval and forming a plurality of slit holes in the stepped portion, and a bending projection piece penetrating the slit hole on the upper edge side. Since a plurality of second louver pieces intersecting the first louver piece are provided, the stepped portion inside the first louver piece can be formed relatively wide, so that the protruding piece can be easily bent. Moreover, since all the protruding pieces can be bent at once by moving the caulking jig along the longitudinal direction of the first louver piece, the assembly is easy. Further, there is an effect that the second louver piece is surely coupled to the first louver piece by bending the protrusion piece.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating attachment of a second louver piece.

FIG. 3 is a perspective view illustrating a step of bending a protrusion piece with a caulking jig.

FIG. 4 is a partially exploded perspective view of the second embodiment.

FIG. 5 is a partially exploded perspective view of a third embodiment.

FIG. 6 is an exploded perspective view of a conventional example.

FIG. 7 is a schematic sectional view of the conventional example.

FIG. 8 is a cross-sectional view of another conventional example.

[Explanation of symbols]

 1 1st louver piece 2 2nd louver piece 3 V-shape part 4 Step seat part 5 Reverse C-shape part 6 Slit hole 10 Protrusion piece

Claims (1)

Claims: 1. A V-shaped section has a substantially V-shaped cross section and a V-shaped section on the bottom side thereof.
A first louver in which a plurality of slit holes are formed in each of the stepped seats, the stepped seats having a large space between the inverted crossed hoops between the double-sided up part and the upper inverted side of the upside down c-shape. A louver for a lighting fixture, comprising: a piece; and a plurality of second louver pieces that intersect the first louver piece and have a bending projection piece that penetrates through the slit hole on the upper edge side.