JP2008097931A - Illumination fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to reduce the number of parts even if an illumination fixture is made to have a structure where the illumination direction can be changed by rotating an illumination fixture main body (5) coaxially with a connection plug (P) in the illumination fixture formed by mounting a synthetic resin-made support pipe (50) protruding from the illumination fixture main body (5) side on the connection plug (P). <P>SOLUTION: The connection plug (P) is equipped with a pair of a synthetic resin-made front case (1) and rear case (2) overlapped with each other so as to wrap and hold the tip of the support pipe (50) from the diameter direction. In the vicinity of the tip of the support pipe (50), the pair of outer peripheral flanges overhanging in parallel with each other with the existence of a spacing in the axial direction is formed integrally with the support pipe (50), while at the inner periphery of the front case (1) and the rear case (2), first and second erected plates are protruded and installed which are separately crimped to mutually-opposing surfaces of the pair of the outer peripheral flanges in an overlapped state, and the first and second erected plates are arranged in the arrangement direction of the pair of the outer peripheral flanges with the existence of the spacing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a luminaire connected to a duct rail disposed on a ceiling or a wall surface.

  Duct rails are widely used for slidably attaching small luminaires, and are used, for example, when slidably moving small luminaires according to the arrangement of furniture at home and lifestyle. In addition, it is also used when a small lighting device is slidably mounted in order to illuminate exhibits and displays in a spot for the purpose of enhancing the display effect in a showroom or an exhibition hall.

On the other hand, a connecting plug having a structure as shown in FIGS. 7 and 8 is connected to the lighting fixture so as to be detachably attached to the duct rail.
As shown in FIG. 8, a slide lock (6) that can be moved up and down is disposed in front of the connection plug (P), and a duct rail (3) (see FIG. 7) described later is provided at the upper end. A hook shaft (A1) for insertion connection is projected. Also, from the hook shaft (A1), a pair of engagement pieces (A11) (A11) and terminal metal fittings (4) (4) above it have a radius for engaging the duct rail (3) in a retaining state. Projects outward in the direction.

FIG. 7 is an exploded perspective view illustrating a connecting portion between the connection plug (P) and the illuminator body (5).
The connecting plug (P) is composed of a semi-elliptical cylindrical front case (1) and a rear case (2) combined in an elliptical cylindrical shape. Each has a lower flange (10) and an upper flange (11) disposed with a gap (S).

A rectangular suspension plate (51) is fitted on the upper end of the support pipe (50) protruding upward from the illuminator body (5), and the suspension plate (51) 50) and is fixed by a fixing nut (52) and a spring washer (53) which are screwed together. The outer periphery of the suspension plate (51) is inserted into the gap (S) between the upper and lower flanges (10) and (11).
In this case, the spring washer (53) is externally fitted to the upper end of the support pipe (50) in the state shown in FIG. 7 in which the suspension plate (51) is externally fitted to the upper end of the support pipe (50). When the nut (52) is screwed together, the suspension plate (51) is fixed to the support pipe (50).

  When connecting the connection plug (P) and the support pipe (50), first connect the annular terminals (45) (45) at the upper ends of the wires (54) (54) drawn from the support pipe (50). The screws (b) and (b) are joined to the wiring fixing pieces (40) and (40) bent from the lower ends of the terminal fittings (4) and (4) attached to the plug (P). Next, the front and rear cases are inserted so that the outer periphery of the suspension plate (51) is inserted into the gap (S) between the upper and lower flanges (10) and (11) projecting to the inner periphery of the lower ends of the front and rear cases (1) and (2). (1) Superimpose (2) in an elliptical cylinder and fix them with a coupling screw (c). Then, the rectangular suspension plate (51) is in a state of being tightly fitted between the upper and lower flanges (10) (11) on the inner periphery of the elliptical connection plug (P), thereby the suspension plate ( 51) is coupled to the connection plug (P) in a non-rotatable state in the plane, and the connection plug (P) is attached to the upper end of the support pipe (50) as shown in FIG.

  When the illuminator body (5) is attached to the duct rail (3), the hook pieces (A1 and A11) appearing in FIG. 8 are in parallel with the longitudinal direction of the duct rail (3). ) Is inserted into the slide groove (31) of the duct rail (3), and then the connection plug (P) is rotated about its axis. Then, the engagement pieces (A11) (A11) protruding from the outer periphery of the hook shaft (A1) are engaged with the engagement bars (32) (32) in the slide groove (31) from above, and the terminal fitting ( 4) and (4) contact the electrode bars (33) and (33) in the slide groove (31), whereby the connection plug (P) is slidably coupled to the duct rail (3).

In this case, the connection plug (P) can slide freely along the slide groove (31) of the duct rail (3), so that it can be used for lighting in order to arrange furniture in the home and display effects in the showroom. The container body (5) can be slid to an appropriate position.
Japanese Utility Model Publication No. 55-45181

  However, in the above-mentioned conventional one, as a part for connecting the illuminator body (5) to the connection plug (P) in a suspended state, a suspension plate (51) that is externally fitted to the upper end of the support pipe (50), There is a problem that many parts are required, such as a spring washer (53) for holding this, and a fixing nut (52) screwed to the upper end of the support pipe (50).

  Further, in the above-described conventional one, as described above, the suspension plate (51) is coupled to the connection plug (P) in a non-rotatable state within the plane, so that the obliquely lower portion is illuminated in a spot manner. There is also a problem that the lighting direction cannot be changed in the lighting fixture, and it cannot be applied to this type of lighting fixture.

  The present invention has been made in view of such points, and even if the illumination body (5) is rotated coaxially with the connection plug (P) to change the illumination direction, the number of parts can be reduced. The task is to do.

[Invention of Claim 1]
The solution means of the invention according to claim 1 for solving the above-mentioned problem is as follows:
`` In the lighting fixture in which the synthetic resin support pipe (50) protruding from the illuminator body (5) side is attached to the connection plug (P),
The connection plug (P) includes a pair of a front case (1) and a rear case (2) made of synthetic resin that are overlapped so as to hold the tip of the support pipe (50) from the radial direction,
A pair of parallel outer peripheral flanges extending in the axial direction in the vicinity of the tip of the support pipe (50) is formed integrally with the support pipe (50),
On the inner periphery of the front case (1) and the rear case (2), a first and a second upright plate are provided in a projecting manner so as to be pressed against the opposing surfaces of the pair of outer peripheral flanges. ,
The first and second upright plates are disposed with an interval in the arrangement direction of the pair of outer peripheral flanges.
According to the solution, the first and second upright plates protruding from the inner periphery of the front case (1) and the rear case (2) constituting the connection plug (P) are arranged on the illuminator body (5) side. Are pressed against the opposing surfaces of the pair of outer peripheral flanges in the vicinity of the tip of the support pipe (50) projecting from each other. In addition, the first and second upright plates are disposed with a gap in the arrangement direction of the pair of outer peripheral flanges. Therefore, when the first and second upright plates of the front and rear cases (1) and (2) are in pressure contact with the opposed surfaces of the pair of outer peripheral flanges on the support pipe (50) side, Each of the first and second upright plates is slightly elastically deformed in the pressure contact direction. That is, not only the elastic deformation of the pair of outer peripheral flanges, but also the elastic force of the first upright plate and the second upright plate inserted between the two is ensured.

  In this state, the support pipe (50) on the illuminator body (5) side and the connection plug (P) can rotate relatively around the axis. Therefore, the illumination direction by the illuminator body (5) can be changed even when the connection plug (P) is connected to the socket portion such as the duct rail described above.

  Further, according to the above solution, the connection plug (P) and the connection plug (P) are formed using a pair of outer peripheral flanges integrally formed on the synthetic resin support pipe (50) protruding from the illuminator body (5) side. The support pipe (50) is coupled in a rotatable state. Therefore, as described above, the suspension plate (51) fitted around the upper end of the support pipe (50), the spring washer (53) that holds the suspension plate, and the upper end of the support pipe (50) are screwed together. The number of necessary parts can be reduced as compared with the one that requires a fixing nut (52) or the like.

[Invention of Claim 2]
In the invention according to claim 1,
“While the first upright plate is in pressure contact with the outer peripheral flange in the entire circumferential direction,
In the case where the second upright plate presses against the other outer peripheral flange in part in the circumferential direction, the second upright plate presses against the other outer peripheral flange in part. Compared with the case where both of the two upright plates are pressed against the outer peripheral flange in the entire circumferential direction, the connection plug (P) and the support pipe (50) can be relatively rotated with a small force.

[Invention of Claim 3]
In the invention according to claim 1 or claim 2,
In `` the front case (1) and the rear case (2) and the support pipe (50) are provided with a stopper for restricting the range in which the support pipe (50) rotates about its axis '' The plug (P) and the support pipe (50) do not rotate relative to each other indefinitely. Therefore, even if the illuminator body (5) and the connection plug (P) are connected by electrical wiring, the electrical wiring is not easily twisted.

[Invention of Claim 4]
As a means for solving the above problems,
`` In the lighting fixture in which the synthetic resin support pipe (50) protruding from the illuminator body (5) side is attached to the connection plug (P),
The connection plug (P) includes a pair of a front case (1) and a rear case (2) made of synthetic resin that are overlapped so as to hold the tip of the support pipe (50) from the radial direction,
A pair of parallel outer peripheral flanges extending in the axial direction in the vicinity of the tip of the support pipe (50) is formed integrally with the support pipe (50),
In the inner periphery of the front case (1) and the rear case (2), there is an engagement solid body that is press-fitted between the pair of outer peripheral flanges in the superimposed state. Engagement solids projecting from the inner periphery of the front case (1) and the rear case are press-fitted in a pair of parallel outer peripheral flanges projecting in the vicinity of the tip of the pipe (50). Thereby, like the invention which concerns on Claim 1, the support pipe (50) and connection plug (P) by the side of an illuminator main body (5) can rotate relatively around an axis | shaft.
In the invention according to claim 4, since the support pipe (50) has the same configuration as that of the invention according to claim 1, the number of necessary parts can be reduced as in the invention according to claim 1.

The present invention has the following specific effects.
In the invention according to claim 1, the connection plug (P) and the above-described flange are formed using a pair of outer peripheral flanges integrally formed on the synthetic resin support pipe (50) protruding from the illuminator body (5) side. The support pipe (50) can be coupled in a rotatable state. In addition, as described above, the suspension plate (51) that is externally fitted to the upper end of the support pipe (50), the spring washer (53) that holds the suspension plate, and the upper end of the support pipe (50) are screwed together. The number of necessary parts can be reduced as compared with the one that requires a fixing nut (52) or the like.
Therefore, the number of parts can be reduced even if the illuminator body (5) is rotated coaxially with the connection plug (P) to change the illumination direction.

  Unlike the invention according to claim 1, a single upright plate having a thickness that is press-fitted between a pair of outer peripheral flanges provided on the outer periphery of the support pipe (5) is used as a front case (1) or a rear case (2 ), The pressure contact force between the upright plate and the outer peripheral flange is ensured only by elastic deformation of the pair of outer peripheral flanges. On the other hand, in the invention according to claim 1, not only the elastic deformation of the pair of outer peripheral flanges provided in the support pipe (50), but also the first and second upright plates inserted between them. The pressure contact force is also secured by the elastic deformation of. Therefore, since many elastic bodies (the outer peripheral flange and the first and second upright plates) contribute to the pressure contact force, there is little inconvenience that the pressure contact force decreases with time.

  Further, since the front case (1) and the rear case (2) provided with the first and second upright plates protruding at an interval are used, it is the same as the above-described conventional example shown in FIGS. The front case (1) and the rear case (2) having the structure described above can be used as they are.

  According to the second aspect of the present invention, as described above, the connection plug (P) and the support are both compared to the case where both the first and second upright plates are pressed against the outer peripheral flange in the entire circumferential direction. The pipe (50) can be relatively rotated with a small force.

In the invention according to claim 3, as described above, even if the illuminator body (5) and the connection plug (P) are connected by the electric wiring, the electric wiring is not easily twisted.
In the invention according to claim 4, as described above, the number of necessary parts can be reduced.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
"overall structure"
As shown in FIG. 1, the lighting fixture according to the present embodiment has a structure in which a support pipe (50) protruding from the illuminator body (5) side is attached to the connection plug (P).
The connection plug (P) is a pair of a front case (1) and a rear case that are overlapped so as to hold the plug main body (A) in the front and back direction and the tip of the support pipe (50) from the radial direction. (2) is provided. Details of each part will be described below.

* Plug main body (A)
As shown in FIG. 1, the plug main body (A) is a hook shaft (A1) slidably inserted into a slide groove (31) of a duct rail (3) (attached to a wall surface of an indoor ceiling or the like). ) And a pair of engaging pieces (A11) (A11) and terminal fittings (4) and (4) thereabove project outward in the radial direction from the hook shaft (A1).

  On the wire fixing piece (40) bent from the lower end of each terminal fitting (4), the upper ends of the wires (54) and (54) connected from the support pipe (50) to the illuminator body (5) are screws (b). It is fixed. Accordingly, each terminal fitting (4) and the illuminator body (5) are electrically connected via the wiring (54). A ground terminal (42) protrudes from the upper end of the hook shaft (A1).

* Case body (B), etc. As shown in FIGS. 1 and 2, the case body (B) covering the plug main body (A) and the upper end of the support pipe (50) is a semi-cylindrical front and rear case made of synthetic resin. (1) It is divided into two, and a pair of upper and lower flanges (24), (25) parallel to each other are provided near the lower end of the rear case (2). These upper and lower flanges (24) and (25) are press-fitted into outer peripheral flanges (55) and (56) protruding from the vicinity of the upper end of the support pipe (50) on the illuminator body (5) side. As shown in FIGS. 2 and 3, a rib (240) that is long in the radial direction is raised on the upper surface of the center in the circumferential direction of the upper flange (24), and the upper flange (24) following the rib (240) is raised. An anti-rotation protrusion (241) that protrudes toward the center in the radial direction of the upper flange (24) is provided on the inner peripheral portion.

In addition, a screw holding cylinder (26) for inserting the coupling screw (c) projects from the peripheral side wall of the rear case (2) above the upper and lower flanges (24) and (25). .
Positioning protrusions (27) and (27) that engage with engaging recesses (76) and (76) formed on both sides of the plug main body (A) are opposed to the inner walls at both ends in the circumferential direction of the rear case (2). In addition, a rectangular cutout (280) is formed in the upper end wall (28) of the rear case (2) so as to be fitted over the upper portion of the plug main body (A).

  As shown in FIGS. 1 and 2, the front case (1) is formed in a semi-cylindrical shape facing the rear case (2), and a slide lock (6) is slidable up and down on the outer peripheral surface. A vertically long recess (12) for loading is formed. As shown in FIG. 2, the slide lock (6) is urged upward by a coil spring (65), and the front case (1) is connected to a coupling screw (from the rear case (2) side). A nut (16) for screwing c) is provided.

  Near the lower end of the front case (1), a pair of parallel upper and lower flanges (14) are press-fitted into the outer flanges (55) and (56) protruding from the vicinity of the upper end of the support pipe (50) of the illuminator body (5). ) (15) are provided, and these upper and lower flanges (14) and (15) and the upper and lower flanges (24) and (25) on the rear case (2) side are the invention-specific matters of claim 1 described above. This corresponds to the “first and second upright plates” and the “engagement raising solid” as the invention specific matter of claim 4. Further, as shown in FIG. 2, the upper flange (14) has a radially long rib (140) on the upper surface at the center in the circumferential direction, like the corresponding upper flange (24) on the rear case (2) side. ) Is raised, and an anti-rotation projection (141) is provided on the inner peripheral portion of the upper flange (14) following the rib (140) to project toward the center side in the radial direction of the upper flange (14). ing.

  The upper flange (14) on the upper end wall of the front case (1) has a rectangular notch (180) that fits over the top of the plug main body (A), and at both ends in the circumferential direction of the front case (1). On the inner wall, positioning protrusions (17) and (17) that engage with engaging recesses (86) and (86) formed on both sides of the plug main body (A) are provided so as to face each other.

  The width of the upper end (60) of the slide lock (6) is set so that it fits exactly into the groove entrance of the slide groove (31) of the duct rail (3), and this connects to the duct rail (3). The connected plug (P) is prevented from rotating accidentally and falling off.

* Illuminator body (5) and support pipe (50)
A parallel pipe mounting plate (57) (58) erected on the upper surface of the illuminator body (5) having the illumination lamp (70) is penetrated by a support shaft (59), and the support shaft ( 59) rotatably penetrates the lower end portion of the support pipe (50) inserted between the pipe mounting plates (57) and (58). Also, fixing nuts (71) and (72) are screwed into the protruding portions on both ends of the support shaft (59) protruding outward from the pipe mounting plates (57) and (58), and the fixing nuts (71) and (72) By tightening, the support pipe (50) can be fixed to the pipe mounting plates (57) and (58) in a non-rotating state.

  The support pipe (50) is integrally formed of synthetic resin as a whole, and a pair of parallel outer peripheral flanges are provided on the outer periphery in the vicinity of the upper end of the support pipe (50) with an interval in the axial direction of the support pipe (50). (55) (56) overhangs.

  As shown in FIG. 1 and FIG. 2, on the lower surface of the upper outer peripheral flange (55), the detent protrusion (141) protruding from the upper flanges (14) and (24) of the front and rear cases (1) and (2) described above. An anti-rotation projection (550) that engages with (241) is provided. As a result, when the support pipe (50) is rotated around the axis with respect to the connection plug (P), the front and rear cases (1) in which the anti-rotation protrusion (550) on the support pipe (50) side constitutes the connection plug (P) ) (2) Side rotation protrusions (141) and (241) are contacted alternatively from the rotation direction (see FIG. 5), and the illuminator body (5) rotates horizontally with respect to the connection plug (P). The range is restricted to 180 degrees. Therefore, in the present embodiment, the above-described rotation preventing projections (141), (241), and (550) correspond to stoppers that are the above-mentioned specific matters of the invention.

《Assembly work》
Next, an operation for assembling the lighting apparatus according to the present embodiment will be described.
First, as shown in FIG. 1, the front and rear cases (1) and (2) are made to face each other with the plug main body (A) interposed therebetween. In this state, positioning protrusions (17) (17) (27) (27) provided on the inner walls of the rear case (2) and the front case (1) are formed on the side of the plug main body (A). The front and rear cases (1) and (2) are externally fitted to the plug main body (A) so as to be engaged with the engaging recesses (76), (76), (86) and (86).

  Also, at the time of this external fitting, the lower ends of the front and rear cases (1) and (2) are placed between the outer peripheral flanges (55) and (56) protruding from the vicinity of the upper end of the support pipe (50) extending from the illuminator body (5). Press-fit the upper and lower flanges (14) (15) (24) (25) on the inner circumference. Then, as shown in FIG. 4, the outer peripheral flange (55) at the upper end of the support pipe (50) has a rib (140) raised on the upper surfaces of the upper flanges (14) and (24) of the front and rear cases (1) and (2). (240). As a result, the upper flanges (14) and (24) of the front and rear cases (1) and (2) are in pressure contact with the outer peripheral flange (55) at the ribs (140) and (240). That is, the upper flanges (14) and (24) of the front and rear cases (1) and (2) are in pressure contact with the outer peripheral flange (55) in a part of the circumferential direction at the ribs (140) and (240). become.

The other outer peripheral flange (56) corresponding to the outer peripheral flange (55) is in pressure contact with the parallel flanges (15) and (25) of the front and rear cases (1) and (2) in the entire region in the circumferential direction.
Therefore, in the present embodiment, the upper flanges (14) and (24) of the front and rear cases (1) and (2) correspond to the second upright plate which is the above-mentioned specific matter of the invention. Further, the lower flanges (15) and (25) of the front and rear cases (1) and (2) correspond to the first upright plate which is the above-mentioned specific matter of the invention.

Next, the nut (16) of the front case (1) from the screw holding cylinder (26) protruding from the inner surface of the peripheral side wall of the rear case (2) through the through hole (A2) of the plug main body (A) When the coupling screw (c) is screwed into and tightened, the connection plug (P) is attached to the upper end of the support pipe (50) as shown in FIGS.
In this case, the illuminator body (5) can be rotatably attached to the connection plug (P) by the outer peripheral flanges (55) and (56) integrally formed with the support pipe (50). Unlike a thing, many parts, such as a hanging plate (51), a fixing nut (52), and a spring washer (53), are not required, and there exists an advantage that a number of parts decreases.

  Further, since the outer peripheral flange (55) is pressed against the ribs (140) and (240) in a part of the circumferential direction, the outer peripheral flange (55) is in contact with the ribs (140) and (240) in the entire circumferential direction. The rotational resistance of the support pipe (50) is smaller with respect to the connection plug (P) than in the case of pressure contact, and the illuminator body (5) can be smoothly rotated in the horizontal direction.

  When the illuminator body (5) is attached to the duct rail (3), the engaging pieces (A11) (A11) (FIG. 6) exposed above the connection plug (P), as in the conventional case described above. The hook shaft (A1) is inserted into the slide groove (31) of the duct rail (3) with the slide lock (6) lowered while the reference shaft is parallel to the longitudinal direction of the duct rail (3). Thereafter, the connection plug (P) is rotated around the axis. Then, the engagement pieces (A11) (A11) protruding from the outer periphery of the hook shaft (A1) are engaged with the engagement bars (32) (32) in the slide groove (31) from above, and the terminal fitting ( 4) The upper end bent pieces (41) and (41) of (4) contact the electrode bars (33) and (33) in the slide groove (31), so that the connection plug (P) is connected to the duct rail (3). Connect slidably. Thereby, the attachment operation | work of a lighting fixture is completed.

  In the above embodiment, the upper and lower flanges (14), (15) and the upper and lower flanges (24), (25) projecting with a gap on the inner periphery of the lower ends of the front and rear cases (1), (2). The support pipe (50) is configured to be press-fitted into the outer peripheral flanges (55) and (56). On the other hand, a flange body having a thickness slightly larger than the interval between the outer peripheral flanges (55) and (56) is projected from the inner periphery of the front and rear cases (1) and (2), and the flange body is connected to the outer peripheral flanges (55) and (56). ). In this case, the “flange body” corresponds to an “engagement raising solid” which is the invention specific matter of the invention of claim 4.

The exploded perspective view of the lighting fixture which concerns on embodiment of this invention Exploded sectional view of the connection plug (P) mounting part Rear view of rear case (2) Cross section of the assembled state Cross-sectional view explaining the rotation of the support pipe (50) The perspective view which shows the state in which the connection plug (P) was attached to the upper end of a support pipe (50) Illustration of conventional example Illustration of conventional example

Explanation of symbols

(1) ・ ・ ・ Front case
(2) ・ ・ ・ Rear case
(5) ・ ・ ・ Lighting equipment
(50) ... Support pipe
(P) ・ ・ ・ Plug

Claims (4)

In the lighting fixture in which the synthetic resin support pipe (50) protruding from the illuminator body (5) side is attached to the connection plug (P),
The connection plug (P) includes a pair of a front case (1) and a rear case (2) made of synthetic resin that are overlapped so as to hold the tip of the support pipe (50) from the radial direction,
A pair of parallel outer peripheral flanges extending in the axial direction in the vicinity of the tip of the support pipe (50) is formed integrally with the support pipe (50),
On the inner periphery of the front case (1) and the rear case (2), a first and a second upright plate are provided in a projecting manner so as to be pressed against the opposing surfaces of the pair of outer peripheral flanges. ,
The said 1st, 2nd standing board is a lighting fixture arrange | positioned at intervals in the arrangement | positioning direction of a pair of said outer periphery flange. In the lighting fixture of Claim 1,
The first upright plate is in pressure contact with the entire outer circumferential flange with respect to the one outer peripheral flange,
The said 2nd standing board is a lighting fixture which press-contacts to a part of circumferential direction with respect to the other outer peripheral flange. In the lighting fixture according to claim 1 or claim 2,
The front case (1), the rear case (2), and the support pipe (50) are provided with a stopper for restricting a range in which the support pipe (50) rotates about an axis. In the lighting fixture in which the synthetic resin support pipe (50) protruding from the illuminator body (5) side is attached to the connection plug (P),
The connection plug (P) includes a pair of a front case (1) and a rear case (2) made of synthetic resin that are overlapped so as to hold the tip of the support pipe (50) from the radial direction,
A pair of parallel outer peripheral flanges extending in the axial direction in the vicinity of the tip of the support pipe (50) is formed integrally with the support pipe (50),
An illuminating device in which an engagement raising body that is press-fitted between the pair of outer peripheral flanges in a superposed state is provided on the inner periphery of the front case (1) and the rear case (2).

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