JP2000182423A - Louver of luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a louver of a luminaire, such that no clearance forms between baffle plates and a reflector and the productivity of assembly operations is satisfactory. SOLUTION: Baffle plates 2 are inserted and held in a plurality of linear slots 3, formed on both sides of a reflector 1 of a V-shaped cross section from the top of the reflector 1. The plate thickness of each baffle plate 2 is set to be about equal to the width of each slot 3, and a groove 6 is formed in each baffle plate 2 along the direction of insertion of the baffle plate 2 into the reflector 1, the groove 6 located near the part of the baffle plate 2 passing over the top of the reflector 1 when the baffle plate 2 is inserted into the slot 3. Therefore, dimensions can be set so that the part of the reflector 1 near the top where the slots 3 are narrower is inserted into the groove 6, while at other parts, no clearance is formed between the slots 3 and the baffle plates 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a louver for a lighting fixture which is disposed in the lighting space side of the lamp in proximity to a lamp provided in the lighting fixture.

[0002]

2. Description of the Related Art Conventionally, as a luminaire using a plurality of straight tube lamps arranged side by side, a reflector 1 having a V-shaped cross section is arranged between the lamps as shown in FIG. There is a type using a louver formed by attaching a plurality of baffle plates 2 (only one baffle plate 2 is shown in the figure) to the reflector 1 that is substantially orthogonal to the longitudinal direction. This type of louver is formed by forming linear cut grooves 3 extending from the top to the middle of both sides at a plurality of locations in the longitudinal direction of the reflector 1 and inserting a part of the baffle plate 2 into each cut groove 3. Have been.

By the way, in order to manufacture the reflector 1 of the above-described embodiment, as shown in FIG.
In general, after forming a plurality of rectangular holes 3a, a bending process is performed to bend the sheet metal 4 along a bending curve L passing through the center of each hole 3a. When such processing is performed, as shown in FIG. 14, the width d2 of each kerf 3 near the top of the reflector 1 is changed to the width d of the other portion of the kerf 3
It becomes smaller than 1. Here, the relationship between the two widths d1 and d2 differs depending on the plate thickness and the bending angle, but generally the width d2 is smaller by 20 to 30% than the width d1 (0.7d1 ≦ d2 ≦ 0.8d1). . That is, the reflection plate 1
If the width d2 near the top of the baffle plate 2 is not designed to be substantially equal to the thickness of the baffle plate 2, the baffle plate 2 cannot be inserted into the cut groove 3, so that the width size of other portions of the cut groove 3 d1 is 2 to the thickness of the baffle plate 2
It will be set about 30% larger. In other words,
The width of the hole 3a is designed to be 20 to 30% larger than the thickness of the baffle plate 2.

[0004]

As described above, in the louvers conventionally provided, the kerf 3 formed in the reflector 1 has a portion having a width larger than the thickness of the baffle plate 2 so that the baffle is not provided. There is a problem that a gap is formed between the plate 2 and the reflection plate 1 to impair the appearance. Further, since the position of the baffle plate 2 is not fixed with respect to the reflection plate 1, the interval between each pair of adjacent baffle plates 2 may be different from place to place, which also impairs the appearance.

On the other hand, as shown in FIG. 15, a tapered portion 5 is formed in a portion of the baffle plate 2 on the side opposite to the illumination space so that the thickness becomes smaller toward the tip and formed on the reflector 1. It is conceivable that the baffle plate 2 can be introduced into a narrow portion of the kerf 3 near the top of the reflector 1 by introducing the baffle 2 from a portion having a small thickness dimension when the baffle 3 is inserted into the kerf 3.

However, even if such a configuration is adopted, when the baffle plate 2 is inserted into the cut groove 3 to some extent, the thickness of the baffle plate 2 becomes larger than the width near the top of the cut groove 3. , Reflector plate 1 and baffle plate 2
This requires a large force to insert the wire, and the workability of the assembling work cannot be said to be good. Further, since the width dimension of the cut groove 3 is smaller than the thickness of the baffle plate 2 near the top of the reflector 1, the baffle plate 2 is
If it is forcibly pushed, the reflection plate 1 may be deformed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a louver for a lighting fixture in which a gap is not formed between a baffle plate and a reflecting plate and which has good workability in assembling work. To provide.

[0008]

According to a first aspect of the present invention, there is provided a reflector having a V-shaped cross section and a plurality of reflectors which are inserted into a plurality of linear cut grooves formed from the top of the reflector to the middle of both sides. A plurality of baffle plates arranged so as to intersect in a longitudinal direction of the lighting device, and a louver for a lighting device arranged in a lighting space side with respect to the lamp in proximity to a lamp provided in the lighting device, wherein the baffle The thickness of the plate is set to be substantially equal to the width of the cut groove, and the baffle plate is placed on at least one surface in the thickness direction of the baffle plate and in the vicinity of a portion passing through the top of the reflector when inserted into the cut groove. The grooves are formed along the direction of insertion into the reflector. That is, as shown in FIG. 1, a plurality of cut grooves 3 formed linearly from the top to the middle of both sides are provided on a reflector 1 having a V-shaped cross section, and a baffle partially inserted into each cut groove 3. Board 2
When the baffle plate 2 is inserted into the kerf 3,
2 is formed in a portion passing near the top of the kerf 3 as shown in FIG. 2, and the width dimension of the kerf 3 is smaller near the top of the reflector 1 than in other portions of the kerf 3. Since the part which is present can be passed through the concave groove 6, the part other than the concave groove 6 in the baffle plate 2 can be made to substantially match the width dimension of the cut groove 3. As a result, no gap is formed between the reflection plate 1 and the baffle plate 2, and the interval between each pair of adjacent baffle plates 2 is substantially constant, so that a good-looking appearance can be obtained. Further, since a portion of the cut groove 3 whose width is smaller than that of the other portions is inserted into the concave groove 6, the thickness dimension of any portion of the baffle plate 2 inserted into the cut groove 3 is the same as that of the cut groove 3. The width is almost equal to the width, so that a large insertion force is not required at the time of assembling, and the reflector 1 is not deformed.

According to a second aspect of the present invention, in the first aspect of the present invention, the thickness of the baffle plate in the portion where the concave groove is formed is 0.7 to 0.7 times the thickness of the other portion of the baffle plate.
It is 0.8 times. In the vicinity of the top of the reflector 1, the width of the cut groove 3 becomes 0.7 to 0.8 times that of the other parts. Therefore, the part where the concave groove 6 is formed in the baffle plate 2 is set to the above condition. By doing so, the purpose can be reliably achieved. That is, the baffle plate 2 shown in FIG.
The relationship between the thickness c2 of the portion corresponding to the concave groove 6 and the thickness c1 of the other portion of the baffle plate 2 is 0.7c.
That is, 1 ≦ c2 ≦ 0.8c1 is set.

According to a third aspect of the present invention, in the first or second aspect, the width of the concave groove is set to be two to four times the radius of curvature of the outer surface at the top of the reflector. is there. In the vicinity of the top of the reflector 1 where the width of the kerf 3 is narrower than other portions, the dimension in the direction perpendicular to the longitudinal direction of the reflector is smaller than the radius of curvature of the outer surface of the top of the reflector. Therefore, if the width b of the concave groove 6 shown in FIG. 2 is set to the above condition, the width of the cut groove 3 becomes narrower than other portions. Can be reliably introduced into the concave groove 6.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The basic structure is as described above, but will be described more specifically below. In the present embodiment, as shown in FIG. 3, a louver used for a lighting fixture having two straight tube lamps is exemplified. This louver includes a reflector 1 having a V-shaped cross section disposed between both lamps, and a plurality of baffle plates 2 are attached to the reflector 1 in a form perpendicular to the longitudinal direction of the reflector 1. The reflector 1 is formed with a plurality of linear cut grooves 3 (see FIG. 5) extending from the top (lower end in FIG. 4) of the reflector 1 to the middle of both sides at equal intervals in the longitudinal direction. The baffle plate 2 is attached to the reflection plate 1 such that the central portion in the longitudinal direction meshes with the cut groove 3.

As shown in FIG. 6, arc-shaped notches 7 are respectively formed on the upper edges of both sides of the baffle plate 2 along the lower surface of the lamp. An assembly groove 8 is formed closer to the end than 7. An auxiliary beam 9 engages with the mounting groove 8, and the baffle plate 2 is
And the two auxiliary bars 9. A recess 10 is formed in the upper edge of the central portion in the longitudinal direction of the baffle plate 2, and a pair of mounting claws 11 protrude above the inner edge of the recess 10. As shown in FIG. 4, the reflector 1 has mounting holes 12 formed above the cut grooves 3. When the baffle plate 2 is inserted into the cut grooves 3, the mounting claws 11 are connected to the mounting holes 1.
2, the baffle plate 2 can be fixed to the reflection plate 1.

FIG. 7 shows both surfaces in the thickness direction of the baffle plate 2.
As shown in FIG. 8, a vertical groove 6 is formed, and the upper end of the groove 6 is opened to the lower edge of a recess 10 formed at the upper edge of the central portion of the baffle plate 2. At the portion where the concave groove 6 is formed, the thickness of the baffle plate 2 is 0.7 to 0.7 of the thickness of the other portions.
0.8 times. In other words, the dimensions c1 and c1 shown in FIGS.
The relationship of c2 is 0.7c1 ≦ c2 ≦ 0.8c1.
By forming such a concave groove 6, the width dimension of the cut groove 3 near the top of the reflective plate 1 becomes narrower than other portions due to the manufacturing of the reflective plate 1, It is possible to pass the concave groove 6 through a portion having a small dimension, and it is possible to make the thickness dimension of the baffle plate 2 substantially equal to the width dimension of the cut groove 3 in other portions. That is, the baffle plate 2 can be attached to the reflection plate 1 without forming a gap. Accordingly, the interval between the baffle plates 2 adjacent to the reflector 1 in the longitudinal direction matches the interval between the cut grooves 3, and it is possible to prevent the appearance from being deteriorated due to the variation in the interval between the baffle plates 2.

The width b of the groove 6 is set to be two to four times the radius of curvature of the outer surface of the top of the reflector 1. This corresponds to the size of the portion where the width of the cut groove 3 is narrower at the top of the reflector 1 than at other portions.
Further, as shown in FIG. 9, the vertical dimension of the groove 6 is set such that the lower end of the groove 6 is not exposed to the outside from the lower end of the reflector 1 when the baffle plate 2 is mounted on the cut groove 3. You. Desirably, it is set so that the lower end of the concave groove 6 is positioned at about the middle of the thickness of the reflector 1.

An example of the design in the above dimensional relationship is shown below. The thickness of the baffle plate 2 is 0.8 mm, the width of the cut groove 3 is 0.9 mm, and the radius of curvature of the outer surface at the top of the reflector 1 is shown. Is set to 1.5 mm, it is possible to set the thickness of the baffle plate 2 at a portion corresponding to the groove 6 to 0.6 mm, the width of the groove 6 to 3 mm, or the like.

In the above example, the groove 6 is formed as shown in FIG.
Although it is formed on both surfaces in the thickness direction of the baffle plate 2 as shown in FIG. 10, it may be formed on one surface in the thickness direction of the baffle plate 2 as shown in FIG. In addition, in the above example, the cross-sectional shape of the concave groove 6 is a U-shaped cross section as shown in FIG. 11A, but it may be formed in an arc-shaped cross section as shown in FIG. 11B.

[0017]

According to a first aspect of the present invention, there is provided a reflector having a V-shaped cross section and a plurality of linear cut grooves formed from a top portion of the reflector to a halfway on both sides thereof. With a plurality of baffle boards arranged in a crossing manner,
In a louver for a lighting device arranged on the lighting space side with respect to the lamp in the vicinity of the lamp provided in the lighting device, the thickness of the baffle plate is set substantially equal to the width of the cut groove,
A groove is formed on at least one surface in the thickness direction of the baffle plate and in the vicinity of a portion passing through the top of the reflector at the time of insertion into the cut groove, along the direction in which the baffle plate is inserted into the reflector. A plurality of cut grooves formed linearly from the top to the middle of both sides on the reflector having a V-shaped cross section;
In the baffle plate partly inserted into each cut groove, a concave groove is formed in a portion passing near the top of the reflector when inserting the baffle plate into the cut groove, and near the top of the reflector Since the part where the width of the kerf is smaller than the other part of the kerf can be passed through the groove, the part other than the groove on the baffle plate can be made to substantially match the width of the kerf. it can. As a result, there is an advantage that no gap is formed between the reflection plate and the baffle plate, and the interval between each pair of adjacent baffle plates is substantially constant, so that a good-looking appearance can be obtained. In addition, since the portion of the cut groove having a smaller width dimension than the other portions is inserted into the concave groove, the thickness dimension of the portion inserted into the cut groove in the baffle plate is substantially equal to the width dimension of the cut groove. Therefore, there is an advantage that a large insertion force is not required at the time of assembling, and the reflector is not deformed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a basic configuration of the present invention.

FIG. 2 is a perspective view of a main part showing a baffle plate used in the same.

FIG. 3 is a perspective view showing an embodiment of the present invention.

FIG. 4 is an exploded perspective view of a main part of the above.

FIG. 5 is a perspective view of an essential part showing a reflector used in the same.

FIG. 6 is a front view showing a baffle plate used in the above.

FIG. 7 is a perspective view of a main part showing a baffle plate used in the above.

FIG. 8 is a plan view showing a baffle plate used in the above.

FIG. 9 is a front view of an essential part showing a baffle plate used in the above.

FIGS. 10 (a) and 10 (b) are main part plan views showing a baffle plate used in the above.

FIGS. 11 (a) and 11 (b) are main part plan views showing a baffle plate used in the above.

FIG. 12 is a perspective view of a main part showing a conventional example.

FIG. 13 is a plan view showing a manufacturing process of the reflector used in the above.

FIG. 14 is a bottom view of a main part of the reflector used in the above.

FIG. 15 is an exploded side view showing a main part of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reflector plate 2 Baffle plate 3 Cut groove 6 Groove

Claims (3)

[Claims] 1. A reflector having a V-shaped cross section and a plurality of linear cut grooves formed from the top of the reflector to the middle on both sides and arranged in such a manner as to intersect in the longitudinal direction of the reflector. In a louver for a lighting device, comprising a plurality of baffle plates, and arranged in the lighting space side with respect to the lamp in the vicinity of the lamp provided in the lighting device, the plate thickness of the baffle plate corresponds to the width dimension of the cut groove. A groove is formed along the direction in which the baffle plate is inserted into the reflector near at least one surface in the thickness direction of the baffle plate that passes through the top of the reflector when inserted into the cut groove. A louver for a lighting fixture, wherein the louver is formed. 2. The thickness of the baffle plate at the portion where the concave groove is formed is 0.7 to 0.8 times the thickness of the other portion of the baffle plate. Lighting fixture louver. 3. The louver according to claim 1, wherein the width of the concave groove is 2 to 4 times the radius of curvature of the outer surface at the top of the reflector. .