JP2009123494A - Illuminating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illuminating device with appearance improved by preventing steps generated at a coupling site of a fixture body. <P>SOLUTION: A coupling cover 21 is formed in a watershoot shape so as a cross section crossing a longitudinal direction on an outside face to be of the same shape, arranged so as to fill a gap between itself and a body cover 3, and its relative position with the body cover 3 is fixed. A guide plate 22 is protruded from a face of the coupling cover 21 opposite to the body cover 3 along an inner side face of the body cover 3. On an underside of the guide plate 22 opposed to the inner side face of the body cover 3, a deformation preventing protrusion 32 is set in protrusion for preventing deformation of a site of the body cover 3 opposed to the guide plate 22 by having a tip part in contact with the inner side face of the body cover 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an illuminating device in which a plurality of fixture main bodies arranged in parallel along the longitudinal direction are connected by a connecting device in a state where both ends in the longitudinal direction are supported.

  2. Description of the Related Art Conventionally, for example, a lighting device in which a plurality of fixture bodies are connected, such as a lighting device that enables a wide range of illumination by connecting a plurality of fixture bodies in the longitudinal direction (for example, patents). Reference 1).

In Patent Document 1, a plurality of hanging lighting fixtures used in a state in which both ends in the longitudinal direction are supported so as to be hung from the ceiling, are connected using a connecting device (connecting tool). It is described to do. In patent document 1, the instrument main bodies are connected by fastening the plate-shaped member straddling between the edge parts of an adjacent instrument main body with each instrument main body with a screw.
JP 2003-297113 A

  By the way, in patent document 1, as a technique which supports an instrument main body, the structure which suspends each edge part of the longitudinal direction of each instrument main body with a support tool, respectively, and by suspending a connection device with a support tool, Although the structure supporting both ends in the longitudinal direction is described, in the former structure, even if the height position of the adjacent instrument body is slightly deviated, there may be a step in the connection part. In the configuration, each instrument body may bend due to its own weight, and a step may be generated at the connection site. That is, the outer surfaces of the adjacent instrument bodies are not flush with each other at the connection site between the instrument bodies, and the seam between the instrument bodies may be conspicuous, which may impair the beauty.

  This invention is made | formed in view of the said reason, Comprising: It aims at providing the illuminating device which can prevent that a level | step difference arises in the connection part of an instrument main body, and can improve appearance.

  The invention of claim 1 is provided with a hook-shaped main body cover, and the end faces of the main body cover are abutted with a predetermined gap therebetween so that both end portions in the longitudinal direction are supported along the longitudinal direction. Are connected in parallel, and a plurality of fixture bodies to which lamps are respectively attached are connected by a connecting device, and the connecting device has a cross section orthogonal to the longitudinal direction on the outer surface and the same shape as the main body cover. A connecting cover that is formed in a bowl shape and is arranged so as to fill the gap between the main body covers and is fixed in a relative position to the main body cover in a plane orthogonal to the longitudinal direction, and a main body in the connecting cover A guide plate that protrudes from the surface facing the cover along the inner surface of the main body cover. The front end of the guide plate faces the inner surface of the main body cover. Wherein the deformation preventing protrusion to prevent deformation of the portion of the guide plate facing the body cover by abutting the inner surface of the chromatography are projected.

  According to this configuration, in the guide plate that protrudes along the inner side surface of the main body cover from the surface facing the main body cover in the connection cover, the deformation preventing projection is protruded on the one surface facing the inner side surface of the main body cover. Therefore, even if the instrument body is bent due to its own weight, for example, the tip of the deformation prevention protrusion is brought into contact with the inner surface of the body cover to prevent deformation of the part of the body cover that faces the guide plate. can do. That is, the outer surface of the main body cover and the outer surface of the connection cover can be maintained flush with each other at the joint between the main body cover and the connection cover. Therefore, it is possible to prevent a step from being generated between the main body cover and the connection cover, and there is an advantage that the joint between the main body cover and the connection cover is less noticeable and looks better.

  According to a second aspect of the present invention, in the first aspect of the invention, the deformation preventing projection is formed in a straight line extending along the longitudinal direction.

  According to this configuration, since the deformation prevention protrusion is formed in a straight line extending along the direction in which the connection cover and the main body cover are arranged, the deformation prevention protrusion serves as a guide when the guide plate is inserted into the instrument body. The guide plate can be easily inserted into the instrument body.

  According to a third aspect of the present invention, in the second aspect of the present invention, at least a pair of the deformation preventing projections are provided at positions symmetrical with respect to a center line along the longitudinal direction of the one surface of the guide plate. It is characterized by that.

  According to this configuration, since at least one pair of the deformation preventing protrusions is provided at positions symmetrical with respect to the center line along the longitudinal direction of the guide plate, the deformation preventing protrusions are in contact with the inner surface of the main body cover on both sides of the center line. By touching, it is possible to prevent deformation that narrows the width dimension of the opening surface at the end face that is abutted with the connecting cover of the main body cover.

  The invention of claim 4 is the invention according to any one of claims 1 to 3, wherein the main body cover includes a main body main plate parallel to the guide plate, and both end edges of the main body main plate in a direction perpendicular to the longitudinal direction. A pair of main body side plates projecting upward are formed, and auxiliary projections inserted into the connection covers are respectively provided on the inner side surfaces of the main body side plates, and the connection covers are connected in parallel to the guide plates. It is formed by a main plate and a pair of connecting side plates protruding upward from both end edges of the connecting main plate in a direction orthogonal to the longitudinal direction, and an inner side surface of the connecting side plate is brought into contact with the auxiliary projection.

  According to this configuration, the connecting cover abuts the inner side surface of the connecting side plate against the auxiliary projection, so that it is possible to prevent the distance between the tips of the pair of main body side plates from increasing, and the connecting cover is abutted against the connecting cover of the main body cover. It is possible to prevent deformation that increases the width of the opening surface at the end surface.

  In the present invention, since the tip portion of the deformation prevention protrusion is brought into contact with the inner side surface of the main body cover, deformation of the portion of the main body cover facing the guide plate can be prevented, and therefore a step is generated between the main body cover and the connecting cover. This has the effect of preventing this and improving the appearance.

(Embodiment 1)
As shown in FIG. 2, the lighting device exemplified in the present embodiment is arranged in parallel along the longitudinal direction of the fixture body 1 of the lighting fixture in which both ends in the longitudinal direction are supported so as to be suspended from the ceiling. And each instrument main body 1 is comprised by connecting with the connection apparatus 2. FIG. In the following, the vertical direction (the vertical direction in FIG. 2A) when the lighting device is suspended from the ceiling is the vertical direction, the longitudinal direction of the instrument body 1 is the longitudinal direction, and the width direction of the instrument body 1 is the horizontal direction. This will be described as a direction.

  The instrument main body 1 includes a bowl-shaped main body cover 3 opened upward and a main body cover plate 4 covered on the upper surface of the main body cover 3, and is surrounded by the main body cover 3 and the main body cover plate 4. A main unit 5 that houses a lighting device (not shown), a terminal block (not shown), etc. in the space, and is arranged side by side horizontally below the main unit 5 as shown in FIG. And a pair of lamp units 7 each having a socket (not shown) for holding a lamp 6 made of a straight tube fluorescent lamp. The pair of lamp units 7 are separated from each other in the lateral direction, and as shown in FIG. 2 (b), via the arms 8 projecting from both lateral sides in the longitudinal direction at each longitudinal end of the main unit 5. Each is connected to the main unit 5. A pair of arms 8 projecting on both sides in the lateral direction are coupled to each other inside the main unit 5. 2B, the illustration of the arm 8 is omitted with respect to the instrument body 1 at the left end and the center.

  As shown in FIG. 1 (a), the main unit 5 has a U-shaped frame 9 at a position on the inner side of the main body cover 3 at each end in the vertical direction and having a vertical cross section opened downward. The base (not shown) on which the lighting device and the terminal block are mounted is installed between the frames 9, and the body cover 3 and the body cover plate 4 are installed between the frames 9. Consists of. Here, the lower end portions of the side plates of the frame 9 are bent so as to approach each other to form the pressing plate 10. The main body cover 3 has a rectangular main body plate 11 that is elongated in the vertical direction, and a pair of main body side plates 12 that protrude upward from the lateral end edges of the main body plate 11 over the entire length of the main body plate 11. And the cross section orthogonal to the vertical direction is formed in a U-shape. Here, arm holes 13 (see FIG. 2 (b)) through which the arms 8 are respectively inserted are provided in the thickness direction at both ends of each main body side plate 12 in the vertical direction.

  On the other hand, the lamp unit 7 has a lamp cover 14 that is formed in a U-shaped cross section with a cross section perpendicular to the vertical direction opened upward, and is arranged so as to cover the lamp 6 and the socket from the lower surface side. The light from the lamp 6 is extracted downward through a rectangular window hole 15 opened in the bottom. On the lamp cover 14, a louver 16 that controls the light distribution of the irradiation light extracted from the window hole 15 and prevents the lamp 6 from being directly viewed from below through the window hole 15 is disposed. A reflecting plate 17 extending in the direction from the outer end of the lamp cover 14 toward the main unit 5 is disposed.

  The instrument main body 1 having the above-described configuration is arranged in a plurality of lines along the vertical direction so that the end faces in the vertical direction of the main body covers 3 face each other with a predetermined gap therebetween. The ends in the vertical direction are integrated by being connected to each other by the connecting device 2. At this time, the lamp units 7 of the adjacent appliance main bodies 1 are juxtaposed without gaps by overlapping the end portions in the lamp cover 14 in the vertical direction. As a result, as shown in FIG. 2, each pair of lamp units 7 in each instrument main body 1 is arranged in two rows along the vertical direction, so that a wider range of illumination is possible than when only one instrument main body 1 is used. It becomes possible.

  Here, in this embodiment, the function for supporting the instrument main body 1 in the air is given to the connecting device 2. That is, the connecting device 2 is coupled with the tip portions (lower end portions) of the pair of wires 18 suspended from the ceiling, and thereby the coupling device 2 itself is suspended from the ceiling. Therefore, in the instrument main body 1, each end in the vertical direction is suspended from the ceiling by the wire 18 via the connecting member 2 and supported in the air. In addition, in the instrument main body 1 positioned at both ends of the plurality of instrument main bodies 1 arranged in the vertical direction, end caps (not shown) are attached to end portions on the opposite side to the connecting device 2 in the vertical direction. The tip end of the wire 18 is coupled to the cap, so that the cap is suspended from the ceiling.

  By the way, the connection apparatus 2 used for the illuminating device having the above-described configuration is formed by attaching a connection member 20 that mechanically connects the instrument main bodies 1 to each other and a connection member 20 formed in a bowl shape as shown in FIG. A connecting cover 21 disposed so as to fill a gap between adjacent main body covers 3, a guide plate 22 projecting along an inner surface of the main body cover 3 from a surface of the connecting cover 21 facing the main body cover 3, and a connecting member 20 is provided with a connecting lid plate 23 which is covered on the upper surface side. As shown in FIG. 1 (b), the connecting cover 21 has a cross section perpendicular to the vertical direction on the outer surface formed in the same shape as the main body cover 3, and is attached to the connecting member 20 so as to be relative to the main body cover 3. The fixed position is fixed.

  Hereinafter, the configuration of the coupling device 2 will be described in more detail.

  As shown in FIG. 3, the connection cover 21 includes a rectangular connection main plate 24 parallel to the guide plate 22, and a pair of connections protruding upward from the lateral end edges of the connection main plate 24 over the entire length of the connection main plate 24. The side plate 25 is continuously and integrally formed, and a cross section perpendicular to the vertical direction is formed in a U shape. The vertical dimension of the connecting cover 21 is set smaller than that of the connecting member 20. The upper end portions of the pair of connecting side plates 25 are folded back inward, and a tongue piece 26 protruding in a direction approaching each other is formed at the tip of the folded portion as shown in FIG. A mounting hole 27 is formed in the center of the tongue piece 26.

  In the present embodiment, as shown in FIG. 4, the guide member 28 having the guide plate 22 and the connecting cover 21 are separate members. The longitudinal dimension of the guide plate 22 is set larger than the connection cover 21 and smaller than the connection member 20. The guide member 28 has a pair of guide side plates 29 projecting upward from both lateral edges of the guide plate 22 in an integrated manner with the guide plate 22, and the vertical dimension of the guide side plate 29 is determined by the guide side plate 29. The lower part of the guide side plate 25 is slightly smaller than the connecting side plate 25, and the upper part of the guide side plate 29 is set to be approximately the same as the guide plate 22. Further, a hook piece 30 is formed at the front end of the guide side plate 29 so as to protrude toward each other. A screw hole 31 for the mounting screw 38 is formed in the central portion of the collar piece 30.

  Further, in the present embodiment, two deformation preventing projections 32 extending in a straight line are provided on the lower surface of the guide plate 22 over substantially the entire length in the vertical direction. The function of the deformation preventing projection 32 will be described in detail later.

  The connecting member 20 has a rectangular tube shape that is long in the vertical direction, and is formed in a shape in which a slit 33 is opened over the entire length in the vertical direction at the central portion in the horizontal direction of the lower wall. Furthermore, a screw hole 35 for each pair of connecting screws 34 is formed at each longitudinal end portion of the upper wall of the connecting member 20. As shown in FIG. 5, the connecting member 20 has its upper end abutted against the lower surface of the frame 9 and passed through the frame 9 with each end in the vertical direction inserted into the frame 9 of the instrument body 1. The coupling screw 34 is mechanically coupled to the instrument body 1 by screwing the coupling screw 34 into the screw hole 35.

  Here, an insertion port 36 into which the tongue piece 26 of the main body cover 3 is inserted is opened at the lower end of the center in the vertical direction on both side walls of the connecting member 20 in the horizontal direction. The connecting cover 21 is attached to the connecting member 20 by inserting the tongue piece 26 into the insertion port 36. Here, the guide member 28 has a cross-sectional shape perpendicular to the vertical direction so as to fit in a space surrounded by the connection main plate 24, the connection side plate 25, and the lower wall of the connection member 20 of the connection cover 21. The upper surface of the piece 30 is brought into contact with the lower surface of the connecting member 20, and the distal end portion of the deformation preventing projection 32 projecting from the lower surface of the guide plate 22 is brought into contact with the upper surface of the connecting main plate 24 in the space. Can be stored. Thus, by screwing the mounting screw 38 through the mounting hole 27 of the connecting cover 21 and the hole (not shown) provided in the lower wall of the connecting member 20 into the screw hole 31 of the guide member 28, The connecting cover 21 and the guide member 28 are fixed to the connecting member 20 in the state shown in FIG.

  Although not described in detail, the tip of the wire 18 described above is coupled to the central portion of the connecting member 20 in the vertical direction. Therefore, the connecting lid plate 23 is divided into two in the vertical direction so that the wire 18 can be passed between the connecting lid plates 23.

  According to the configuration described above, when connecting the adjacent instrument bodies 1 using the connecting device 2, the connecting cover 21 and the guide member 28 are attached to the connecting member 20 as shown in FIG. In this state, as shown in FIG. 1 (b), one end of the connecting member 20 in the vertical direction is inserted into the main body unit 5 of one instrument main body 1. At this time, the connecting member 20 is inserted to a position where the longitudinal end surface of the connecting cover 21 contacts the end surface of the main body cover 3, and the connecting cover 21 among the guide plate 22, the guide side plate 29, and the collar piece 30 of the guide member 28. A portion protruding in the vertical direction is inserted into the main body cover 3. Here, the guide plate 22 is separated from the lower surface of the pressing plate 10 of the frame 9 and the upper surface of the main body 11 of the main body cover 3 in the main unit 5 by the thickness of the guide plate 22 and the protrusion height of the deformation preventing projection 32. The guide plate 22 is inserted between the lower surface of the pressing plate 10 and the upper surface of the main body main plate 11.

  In the present embodiment, auxiliary projections 37 inserted into the connection cover 21 are provided on the inner side surfaces of the main body side plates 12 in the main body cover 3, and the inner side surfaces of the connection side plates 25 in the connection cover 21 are provided as auxiliary projections 37. It is made to contact | abut. The function of the auxiliary protrusion 37 will be described later.

  Then, the connection device 20 and the one instrument body 1 are mechanically coupled by fastening the connection member 20 and the one instrument body 1 with a connection screw 34. Further, at the other end in the longitudinal direction of the connecting member 20, the connecting device 2 and the other tool main body 1 are connected to each other by inserting into the main unit 5 of the other tool main body 1 and fastening with the connecting screw 34. As a result, the instrument bodies 1 are connected to each other via the connecting device 2.

  By the way, in the coupling device 2 of this embodiment, as described above, the deformation preventing protrusion 32 is provided on the lower surface of the guide plate 22, and the tip of the deformation preventing protrusion 32 is brought into contact with the inner surface of the main body cover 3. By doing so, deformation of the portion of the main body cover 3 facing the guide plate 22 is prevented, and the outer surface of the main body cover 3 and the outer surface of the connection cover 21 are flush with each other at the joint between the main body cover 3 and the connection cover 21. It can be maintained.

  That is, in the guide plate 22, the deformation preventing projection 32 provided on one surface (lower surface) facing the inner surface of the main body cover 3 has a front end portion of the main body main plate of the main body cover 3 as shown in FIG. 11, the upper portion of the main body cover 3 is prevented from being displaced upward in contact with the tip of the deformation preventing projection 32. Here, the deformation prevention protrusions 32 are provided at both ends in the lateral direction on the lower surface of the guide plate 22 so as to be symmetrical with respect to the center line along the longitudinal direction of the guide plate 22. Since the upward displacement of both end portions in the lateral direction is prevented, the opening of the end face that is abutted against the connecting cover 21 of the main body cover 3 as shown by a two-dot chain line in FIGS. 6 (a) and 6 (b). It is possible to prevent a deformation that narrows the width dimension of the surface (upper end portion) (that is, a deformation in which the positions of both end portions in the horizontal direction of the main body main plate 11 are relatively higher than the central portion in the horizontal direction). it can.

  As a result, even if the instrument body 1 bends due to its own weight, as shown in FIG. 6B, it is possible to prevent deformation of the part of the body cover 3 that faces the guide plate 22, At the joint between the main body cover 3 and the connection cover 21, the outer surface of the main body cover 3 and the outer surface of the connection cover 21 can be maintained flush with each other. Therefore, it is possible to prevent a step between the main body cover 3 and the connection cover 21, and there is an advantage that the joint between the main body cover 3 and the connection cover 21 is not noticeable and looks good.

  In addition, in the present embodiment, a portion corresponding to the deformation preventing protrusion 32 on the upper surface of the guide plate 22 is brought into contact with the lower surface of the pressing plate 10 in the main body unit 5. The force pushed from the side can be received by the pressing plate 10, and the guide plate 22 itself can be prevented from being deformed to reliably prevent the main body cover 3 from being deformed as described above.

  Further, as described above, the inner side surface of the connecting side plate 25 in the connecting cover 21 is brought into contact with the auxiliary protrusion 37 protruding from the inner side surface of each main body side plate 12 in the main body cover 3. It is possible to prevent the distance between the tips from being widened, and it is also possible to prevent deformation that increases the width of the opening surface (upper end portion) at the end face that is abutted with the connecting cover 21 of the main body cover 3.

  Furthermore, here, the deformation preventing projection 32 is formed in a straight line along the vertical direction, so that the deformation preventing projection 32 is inserted when the guide plate 22 is inserted between the pressing plate 10 and the main body main plate 11 in the instrument body 1. It can be used as a guide, and there is an advantage that the guide plate 22 can be easily inserted into the instrument body 1. However, the deformation prevention protrusion 32 is not limited to a linear shape extending along the vertical direction, and the main body cover as described above even in an arbitrary shape such as a curved shape, a circle, or a square. The effect of preventing the deformation of 3 can be expected.

  By the way, in this embodiment, although the example which uses the guide member 28 which has the guide plate 22 and the connection cover 21 as a separate member was shown in the connection apparatus 2, the guide plate 22 may be formed integrally with the connection cover 21. Good. In this case, a dimension obtained by adding the thickness dimension of the main body cover 3 to the height dimension of the deformation preventing projection 32 from the lower surface of the guide plate 22 so that the outer surface of the connecting cover 21 and the outer surface of the main body cover 3 are flush with each other. However, it is desirable to set the height dimension of the deformation preventing projection 32 so as to coincide with the height dimension from the lower surface of the guide plate 22 to the outer surface of the connecting cover 21.

(Embodiment 2)
As shown in FIG. 7, the coupling device 2 according to the present embodiment is different from the coupling device 2 according to the first embodiment in that the number of the deformation preventing protrusions 32 provided on the lower surface of the guide plate 22 is three.

  That is, in the present embodiment, a total of three deformation prevention protrusions 32 are formed, one at each lateral end on the lower surface of the guide plate 22 and one at the lateral central portion. As a result, the deformation preventing projection 32 makes the tip end abut against the both lateral ends and the central portion of the main body main plate 11 as shown in FIG. In addition, the upward displacement of the central portion in the lateral direction can be prevented. Therefore, as shown by a two-dot chain line in FIG. 8, a deformation that increases the width dimension of the opening surface (upper end portion) at the end face that abuts the connecting cover 21 of the main body cover 3 (that is, the horizontal center of the main body main plate 11). (Deformation in which the position of the portion is relatively higher than both end portions in the lateral direction) can also be prevented.

  Here, the BB cross section of FIG. 8 is the same as that shown in FIG. 6B. Therefore, even if the instrument body 1 is bent due to its own weight, FIG. As shown, the deformation of the portion of the main body cover 3 facing the guide plate 22 can be prevented, and the outer surface of the main body cover 3 and the outer surface of the connection cover 21 are connected at the joint between the main body cover 3 and the connection cover 21. Can be kept flush.

  Other configurations and functions are the same as those in the first embodiment.

  By the way, the deformation preventing projection 32 may be appropriately provided at a position that prevents the deformation of the portion of the main body cover 3 facing the guide plate 22 by bringing the tip portion into contact with the inner surface of the main body cover 3. Also, the number is not limited to the above two or three.

  Moreover, not only the instrument main body 1 suspended from the ceiling as illustrated in the above embodiments, but also in the instrument main body 1 in which both ends in the vertical direction are supported by a part being supported by, for example, a column. A useful effect can be expected by using the coupling device 2 of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The structure of Embodiment 1 of this invention is shown, (a) is a perspective view of the state before couple | bonding a connection apparatus with an instrument main body, (b) is a perspective view of the state which couple | bonded the connection apparatus with the instrument main body. The lighting apparatus same as the above is shown, (a) is a perspective view seen from below, and (b) is a perspective view seen from above. It is a perspective view of a connection device same as the above. It is a disassembled perspective view of a connection apparatus same as the above. It is a perspective view of the state which showed the structure same as the above and removed the connection cover and the guide member. The principal part same as the above is shown, (a) is the schematic plan view which looked at the main body cover from the one end side of the vertical direction, (b) is the schematic diagram of the AA cross section of (a). It is a perspective view of the connecting device of Embodiment 2 of the present invention. It is the schematic plan view which showed the principal part same as the above and which looked at the main body cover from the one end side of the vertical direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Connection apparatus 3 Main body cover 11 Main body main plate 12 Main body side plate 21 Connection cover 22 Guide plate 24 Connection main plate 25 Connection side plate 32 Deformation prevention protrusion 37 Auxiliary protrusion

Claims (4)

  Each of the lamps has a bowl-shaped main body cover, and the end faces of the main body cover are faced to each other with a predetermined gap therebetween. Is a lighting device formed by connecting a plurality of instrument main bodies to each other by a connecting device, and the connecting device is formed in a bowl shape in which a cross section perpendicular to the longitudinal direction on the outer surface is the same shape as the main body cover. A connecting cover that is arranged so as to fill the gap between the main body covers and is fixed in a relative position to the main body cover in a plane orthogonal to the longitudinal direction, and a main body from a surface of the connecting cover facing the main body cover. A guide plate that protrudes along the inner surface of the cover, and the tip of the guide plate that faces the inner surface of the main body cover contacts the inner surface of the main body cover. Lighting device characterized by deformation preventing protrusion to prevent deformation of the portion of the guide plate facing the body cover are projected by causing.   The lighting device according to claim 1, wherein the deformation preventing protrusion is formed in a linear shape extending along the longitudinal direction.   The lighting device according to claim 2, wherein at least one pair of the deformation preventing protrusions is provided at a position symmetrical to a center line along the longitudinal direction of the one surface of the guide plate.   The main body cover is formed by a main body main plate parallel to the guide plate, and a pair of main body side plates protruding in the same direction from both end edges of the main body main plate in a direction perpendicular to the longitudinal direction. Auxiliary protrusions inserted into the connecting cover are respectively provided so that the connecting cover is in the same direction from the connecting main plate parallel to the guide plate and both ends of the connecting main plate in the direction perpendicular to the longitudinal direction. The lighting device according to any one of claims 1 to 3, wherein the lighting device is formed by a pair of protruding connecting side plates, and an inner side surface of the connecting side plate is brought into contact with the auxiliary protrusion.

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