JP4971950B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture.

  Conventionally, as shown in FIG. 8, there has been proposed a lighting fixture 1 ″ in which a straight tube fluorescent lamp 5 ″ is mounted on a long fixture body 2 ″ having a U-shaped cross section suspended from a ceiling. (See Patent Document 1).

As another luminaire, it has been proposed a structure shown in FIG. The lighting fixture 1 ′ having the configuration shown in FIG. 9 includes a long fixture body 2 ′ having a U-shaped cross section orthogonal to the longitudinal direction, and is spaced apart in the longitudinal direction of the fixture body 2 ′ on both side walls of the fixture body 2 ′. Each pair of support arm portions 3 'and 3' protrudes, and lamp sockets 8 'and 8' are provided on opposite surfaces of the support arm portions 3 'and 3' spaced apart in the longitudinal direction. A fluorescent lamp 5 ′ is mounted between the lamp sockets 8 ′ and 8 ′. Further, a shade 4 ′ is installed between two support arm portions 3 ′ and 3 ′ spaced apart in the longitudinal direction of the instrument body 2 ′. Here, the instrument body 2 ′ has an opening surface along the longitudinal direction, and the lid 22 ′ is covered so as to substantially cover the opening surface.

In this luminaire 1 ′, in order to suppress the interval between the side walls 21b ′ and 21b ′ of the luminaire body 2 ′ from expanding at the central portion in the longitudinal direction as compared with both ends in the longitudinal direction, FIG. As shown in the figure, in the central portion of the instrument body 2 ′ in the longitudinal direction, the side pieces 212e ′ and 212e ′ are moved downward in the direction perpendicular to the main piece 211e ′ from both side edges of the main piece 211e ′ inside the instrument body 2 ′. A fixing jig 21e 'having a U-shaped cross section formed along both side walls 21b' and 21b 'is disposed, and on the inside of both side walls 21b' and 21b ', along both side walls 21b' and 21b '. Provided with flat plate-like flange portions 212c ′ and 212c ′ that are formed by bending the tip portions of the main pieces 211c ′ and 211c ′ formed so as to protrude toward each other in the direction orthogonal to the main piece 211c ′; Fixing bracket 21e 'and both flange portions 212c', 212c ' Are fixed by fixing screws 21d 'and 21d'.
JP 2004-55305 A

However, in the luminaire 1 ′ having the configuration shown in FIG. 9, in order to suppress the distance between the side walls 21 b ′ and 21 b ′ of the fixture body 2 ′ from being widened in the central portion in the longitudinal direction as compared with both longitudinal ends. In addition to the fixture body 2 ′ and the lid 22 ′, separate members such as the fixture 21e ′ and the fixture screw 21d ′ are required, and the number of parts of the lighting fixture 1 ′ has to be increased.

  Further, by fixing the instrument body 2 ′ and the lid body 22 ′ by screw tightening, the distance between the side walls 21b ′ and 21b ′ of the instrument body 2 ′ is greater in the longitudinal center than in the longitudinal ends. In order to suppress the spread, it is necessary to fix at least three portions of the instrument body 2 ′ in the longitudinal direction and the center portion by screw tightening, and workability when opening the lid 22 ′ for maintenance or the like is deteriorated. There was something to do.

  The present invention has been made in view of the above reasons, and its purpose is to increase the distance between both side walls along the longitudinal direction of the instrument body without increasing the number of parts and the number of tightening points by screws. It is in providing the lighting fixture which can suppress spreading compared with the both ends of a longitudinal direction in a part.

According to the first aspect of the present invention, a long instrument body having a U-shaped cross-section perpendicular to the longitudinal direction and an instrument body covering the opening surface along the longitudinal direction of the instrument body are orthogonal to the longitudinal direction. The lid has a U-shaped cross section, and inside the side walls of the instrument body, hook-shaped support parts that support the both side pieces of the lid body are continuous with the side walls along the longitudinal direction of the instrument body. provided, respectively on both sides piece of the lid is biased to the trough is inserted into the support portion side walls approach each other orientations of the instrument body by pressing to both trough support portion approach each other orientation, each trough The shape-shaped support part is composed of a main piece formed at one end side along the side wall and a bent piece formed by folding back the other end side of the main piece. The wall thickness is smaller than the width between the main piece and the tip of the bent piece in the bowl-shaped support part, and both side pieces of the lid Convex portions are provided to protrude inward in the central portion in the longitudinal direction, the convex portion is characterized by comprising elastic contact with bent piece of trough support.

  According to the present invention, the both side pieces of the lid are inserted into the hook-shaped support portions, and the both side walls of the instrument body are biased in the direction of approaching each other by pressing the hook-shaped support portions toward each other. Since the distance between the side walls along the longitudinal direction of the instrument body is suppressed from expanding in the longitudinal center compared to both ends in the longitudinal direction, the instrument can be used without increasing the number of parts and the number of tightening points with screws. The distance between both side walls along the longitudinal direction of the main body can be prevented from expanding in the central portion in the longitudinal direction as compared to both ends in the longitudinal direction, and the number of parts of the lighting fixture increases and the cost increases. Can be prevented.

Further, according to this invention, the convex portion is provided to protrude inward of the lid in a central portion in the longitudinal direction of the two side pieces of the lid, when the lid is Kutsugaechaku to the instrument body Since the convex part is in elastic contact with the inner side surface of the hook-shaped support part and presses the hook-shaped support parts provided on the inner side surfaces of the both side walls of the instrument body in the direction approaching each other, the both side walls of the instrument body Are biased in a direction approaching each other, and it is possible to prevent the distance between the side walls along the longitudinal direction of the instrument main body from expanding at the central portion in the longitudinal direction as compared with both end portions in the longitudinal direction.

  According to the first aspect of the present invention, the interval between the side walls along the longitudinal direction of the instrument body is wider at the center portion in the longitudinal direction than at both ends in the longitudinal direction without increasing the number of parts and the number of fastening points by screws. There is an effect that an increase in cost due to an increase in the number of parts of the lighting fixture can be prevented.

  Hereinafter, the lighting fixture 1 of this embodiment is demonstrated based on FIG. 1 thru | or FIG.

  As shown in FIG. 2, the luminaire 1 includes a long instrument body 2 having a U-shaped cross section perpendicular to the longitudinal direction, and is spaced apart in the longitudinal direction of the instrument body 2 on both side walls 21 b and 21 b of the instrument body 2. Then, each pair of support arm portions 3 and 3 protrudes, and lamp sockets 8 and 8 are provided on opposite surfaces of the support arm portions 3 and 3 which are spaced apart in the longitudinal direction. A fluorescent lamp 5 is mounted between the eight. Further, a shade 4 that covers the support arm portions 3 and 3 and the fluorescent lamp 5 is provided between the two support arm portions 3 and 3 that are spaced apart in the longitudinal direction of the instrument body 2 from below. Here, the instrument main body 2 has an opening surface along the longitudinal direction, and has a structure in which the lid 22 is covered so as to substantially cover the opening surface.

The instrument main body 2 is formed in a U shape whose cross section orthogonal to the longitudinal direction is open upward, and a lid 22 having a U-shaped cross section is covered on the opening surface of the instrument main body 2. End members 7 and 7 are covered at the open ends of both ends of the. The end member 7 has an extending portion 7b formed to extend from the upper end edge to the inside of the instrument main body 2 (see FIG. 3B), and a through hole 7c is provided in the extending portion 7b. ing. Further, connecting metal fittings 23 and 23 for suspending and supporting the instrument main body 2 from the ceiling are disposed inside the end members 7 and 7. Here, the cross-sectional shape orthogonal to the longitudinal direction of the instrument main body 2 is U-shaped, and the connection fitting 23 protrudes downward from both sides of the flat central piece 23a and the central piece 23a. Leg pieces 23b, 23b arranged along the side walls 21b, 21b, and inner flange pieces 23c, 23c are extended inwardly from the tip edges of the leg pieces 23b, 23b. Further, as shown in FIG. 5 ( b), screw holes 23e and 23f are formed at both ends of the central piece 23a, and the leg pieces 23b and 23b have attachment holes 23g and 23g having a rectangular shape in plan view. Are formed, and hemispherical convex portions 23d and 23d projecting in directions away from each other are provided. Here, the supporting arms 3, 3, the mounting hole 23g, is inserted from 23 g (see Figure 3) inside the connecting fitting 23, it is inserted into pierced by through holes in the distal end portion (not shown) The fastening screws 51 are fastened to each other by being fastened, and are held by the connection fitting 23. Further, the end member 7 is arranged so that the extending portion 7b overlaps the central piece 23a of the coupling metal 23, and a screw (not shown) inserted into the through hole 7c of the extending portion 7b is a screw hole. It is screwed into 23 f and fixed to the connecting metal fitting 23. Further, as shown in FIG. 1, the instrument body 2 has rectangular cutout portions 21d and 21d provided at both ends of the side walls 21b and 21b, which are hooked on the support arm portions 3 and 3, and one end edge of the side wall 21b. The other end edge of the main piece 211c (described later) formed continuously is hooked on the convex portion 23d projecting from the leg piece 23b of the connection fitting 23 and is held by the connection fitting 23.

  In addition, two linear supports 24, 24 suspended from the ceiling are connected to the central piece 23a of the connection fitting 23. That is, the two connection fittings 23 and 23 disposed on both ends of the instrument body 2 are supported by the two support tools 24, respectively, and the instrument body 2 is supported by the two connection fittings 23 and 23. Yes. A portion of the opening surface of the instrument main body 2 that is not covered by the connection fittings 23 and 23 is covered by the lid body 22. In addition, as shown in FIGS. 2 and 5 (b), the fixture body 2 is connected with a ballast 30 for stably lighting each fluorescent lamp 5 and wiring from a commercial power source (not shown). Two terminal blocks 31, 31 are arranged.

  In addition, an electric wire (not shown) that electrically connects the ballast 31 and the lamp socket 8 disposed on the support arm 3 is accommodated in the support arm 3.

  The shade 4 has a rectangular plate-shaped main portion 4a and a main portion 4a extending from both side edges along the longitudinal direction of the main portion 4a by bending both ends in the short width direction of the substantially rectangular sheet metal in plan view. Side portions 41b and 42b projecting in a substantially orthogonal direction (upper direction in FIG. 2) are integrally provided, and the projecting amount of the side portion 41b is larger than the projecting amount of the side portion 42b. Further, the side portions 41b and 42b are arranged so that the side portion 41b is closer to the instrument body 2 than the side portion 42b in a state where the shade 4 is installed between the support arm portions 3 and 3. The main portion 4a of the shade 4 is provided with a light distribution control unit 4b (see FIG. 4) including a louver that controls light distribution from the fluorescent lamps 5 and 5.

  Further, a reflecting plate 6 that covers the side of the fluorescent lamp 5 is installed between the pair of support arm portions 3 and 3 that are separated from each other in the longitudinal direction of the instrument body 2.

By the way, as shown in FIG. 1, the instrument body 2 is formed by bending a sheet metal, and includes an elongated rectangular plate-shaped main portion 21 a and main portions 21 a from both side edges along the longitudinal direction of the main portion 21 a. Side walls 21b, 21b projecting in a substantially orthogonal direction (upward in FIG. 1) are integrally provided. That is, the instrument main body 2 is formed in a substantially U-shaped cross section in which both ends in the longitudinal direction are opened. And the side wall 21b of the instrument main body 2 and 21b are provided with the hook-shaped support part 21c along the longitudinal direction of the side wall 21b, as shown in FIG. Here, the bowl-shaped support portion 21c includes a main piece 211c having one end continuous with the side wall 21b and formed along the side wall 21b, and a bent piece 212c formed by folding the other end of the main piece 211c. The bent piece 212c is inclined in a direction away from the side wall 21b of the instrument body 2 as it approaches the edge of the side wall 21b of the instrument body 2. On the other hand, as shown in FIG. 1, the lid body 22 is formed by bending a sheet metal in the same manner as the instrument body 2, and is mainly formed from a rectangular plate-shaped main portion 22a and both side edges along the longitudinal direction of the main portion 22a. Side pieces 22b and 22b projecting in a direction substantially perpendicular to the portion 22a (downward in FIG. 1) are integrally provided. And the hemispherical convex parts 22c and 22c which protrude in the direction which mutually approaches are projectingly provided by the inner surface of the approximate center part of the longitudinal direction of the both-side pieces 22b and 22b of the cover body 22. FIG. Here, the thickness of the side piece 22b of the lid body 22 is formed to be smaller than the width C between the main piece 211c of the bowl-shaped support portion 21c and the tip end portion of the bent piece 212c (see FIG. 6 (a) see). In addition, through holes 22d and 22d are provided in the vicinity of both ends in the longitudinal direction of the main portion 22a of the lid body 22. When the lid body 22 is covered on the instrument main body 2, the upper surface of the coupling metal 23 is provided. When the lid 22 is arranged so as to overlap, the position of the through hole 22d and the positions of the screw holes 23c and 23c drilled in the connecting fitting 23 are substantially the same. Here, the fastening screw 22e inserted through the through hole 22d is screwed into the screw hole 23c drilled in the connection fitting 23, and the lid body 22 is fixed to the connection fitting 23.

  When the lid body 22 is covered on the opening surface of the instrument body 2, as shown in FIG. 7, both side pieces 22b, 22b of the lid body 22 are provided on the flange-shaped support portions 21c, 21c provided on the side walls 21b, 21b. Is inserted, and the convex portion 22c formed on the side piece 22b of the lid 22 abuts on the bent piece 212c of the bowl-shaped support portion 21c.

  Thus, the tip of the convex portion 22c formed on the side piece 22b of the lid 22 abuts on the bent pieces 212c provided on the both side walls 21b, 21b of the instrument body 2, and both the hook-shaped support portions 21c, 21c is pressed in a direction approaching each other, so that both side walls 21b, 21b of the instrument body 2 are urged in a direction approaching each other, and the interval between both side walls 21b, 21b is compared with both ends in the longitudinal direction at the center in the longitudinal direction. Can be suppressed. Further, since a separate member such as a fixture is not required as in the conventional example, it is not necessary to increase the number of parts, and the cost can be prevented from rising.

  By the way, in order to suppress that the space | interval between the both-side walls 21b and 21b of the instrument main body 2 spreads in the center part of a longitudinal direction compared with the both ends of a longitudinal direction, the instrument main body 2 and the cover body 22 are fixed with a screw. There is also a method, but in this case, it is necessary to fix at least three places in the longitudinal direction of the fixture body 2 by screw tightening, and workability when opening the lid 22 for maintenance of the lighting fixture 1 or the like is improved. It sometimes worsened.

  On the other hand, in the lighting fixture 1 of this embodiment, since it is not necessary to fasten and fix the fixture main body 2 and the lid body 22 with screws, the lid body 22 is opened for maintenance of the lighting fixture 1 as described above. It is possible to prevent deterioration of workability at the time.

It is a disassembled perspective view which shows the fixture main body of the lighting fixture of this embodiment. It is the perspective view seen from diagonally upward of the same lighting fixture. It is a principal part disassembled perspective view of the lighting fixture same as the above. It is the perspective view seen from diagonally downward of the lighting fixture same as the above. The lighting fixture same as the above is shown, (a) is a top view, and (b) is a top view with the lid removed. The state which decomposed | disassembled the fixture main body of the lighting fixture same as the above is shown, (a) is a sectional side view, (b) is a cross-sectional perspective view. It is principal part sectional drawing of a lighting fixture same as the above. It is a perspective view of the lighting fixture of a prior art example. Another prior art example is shown, (a) is a perspective view, (b) is a sectional view of the main part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Appliance main body 3 Support arm part 4 Sed 5 Fluorescent lamp 6 Reflector 21b Side wall 21c Gutter-like support part 22 Lid 22b Side piece 22c Convex part 211c Main piece 212c Bending piece

Claims (1)

A long instrument body having a U-shaped cross section orthogonal to the longitudinal direction, and a lid having a U-shaped cross section that is covered by the instrument body so as to cover the opening surface along the longitudinal direction of the instrument body. And a hook-like support portion for supporting each side piece of the lid body is provided continuously and integrally with each side wall along the longitudinal direction of the instrument body. each sides piece is biased to the trough is inserted into the support portion side walls approach each other orientations of the instrument body by both the gutter-like support portion for pressing the direction approaching each other, each trough-like support part, one end side Consists of a main piece formed along the side wall continuous with the leading edge of the side wall and a bent piece formed by folding back the other end side of the main piece, and the thickness of both side pieces of the lid is a bowl-shaped support portion The center portion of the lid in the longitudinal direction is smaller than the width between the main piece and the tip of the bent piece Luminaire protrusion protruding inwardly are provided, the convex portion is characterized by comprising elastic contact with bent piece of trough support.

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