JP4339239B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture in which a lamp is suspended by a cord, and more particularly to a lighting fixture including an embedded main body embedded in a ceiling and a mounting plate attached to the embedded main body.

  In recent years, lighting fixtures have been developed that include an embedded main body embedded in a ceiling and a lamp suspended by a cord drawn from the embedded main body (see, for example, Patent Document 1). In the lighting fixture as described above, the height of the lamp is adjusted by adjusting the length of the cord from the ceiling to the lamp.

  As a means to adjust the length of the cord from the ceiling to the lamp, a mounting plate that opens and closes the opening is attached to the opening of the embedded body, and a hole for locking the cord is provided in the mounting plate. There is one that adjusts the length of the cord by changing the position in the length direction of the cord to be stopped.

  FIG. 9 is a bottom view showing a configuration of a mounting plate of a conventional lighting fixture. The mounting plate 1 of this lighting fixture is provided with a hole 3 consisting of a hole 3a of a size that allows the head of the screw 2 to pass through and a hole 3b that communicates with the hole 3a and cannot pass through the head of the screw 2. It is provided at two locations facing each other across the center of the plate 1. In addition, screws are respectively screwed into positions corresponding to the holes 3 in the opening of the embedded main body (not shown). Then, a screw is passed through the hole 3a and the mounting plate 1 is rotated with respect to the embedded body, whereby the hole 3b is engaged with the screw 2 and the mounting plate 1 is attached to the embedded body. When adjusting the height of the lamp, the mounting plate 1 is rotated in the opposite direction to the mounting direction with respect to the embedded body, and the engagement between the screw 2 and the hole 3 is released, so that the mounting plate 1 is moved to the embedded body. Completely removed from.

FIG. 10 is a perspective view showing a partial configuration of another conventional lighting fixture. In this lighting fixture, the mounting plate 5 is temporarily suspended from the embedded body 6 by the temporary suspension member 7 when the height of the lamp is adjusted, that is, when the length of the cord 4 is adjusted.
JP 2001-307539 A

  However, like the luminaire shown in FIG. 9, when the mounting plate 1 is completely removed from the embedded body at the time of adjusting the lamp height, it is necessary to always hold the mounting plate 1 with one hand. The length adjustment work must be performed only with the other hand, and the workability is not good. Further, there is a case where the mounting plate 1 is dropped due to slipping of the hand, which is highly dangerous.

  Further, as in the case of the luminaire shown in FIG. 10, when the mounting plate 5 is temporarily suspended from the embedded main body 6 when the lamp height is adjusted, the temporary suspension member 7 is required and the number of parts increases. However, there are problems that the manufacturing cost increases and the number of assembly processes increases. Further, when adjusting the height of the lamp, the mounting plate 5 easily rotates, and the workability of adjusting the length of the cord decreases. In addition, when attaching the mounting plate 5 to the embedded body 6, it is necessary to work with care so that the temporary suspension member 7 is not sandwiched between the mounting plate 5 and the embedded body 6. Is not good.

  An object of the present invention is to provide a lighting device that has good workability when adjusting the height of the lamp and high safety.

  The lighting fixture of this invention is comprised as follows in order to solve the above-mentioned subject.

  (1) A cylindrical body having an opening at at least one end and embedded in the ceiling and housing a part of a cord in which a lamp is suspended; and a mounting plate attached to the opening so as to be openable and closable. The embedded body is provided with a shaft portion provided in a direction perpendicular to the edge portion of the opening portion and a lower end of the shaft portion provided with a gap between the edge portion and expanded with respect to the shaft portion. First locking means comprising a head having a diameter, and second locking means provided at a position that is a part of the opening and is spaced apart from the first locking means, The mounting plate is provided in the vicinity of the outer edge, the first hole through which the head can pass, and the first hole extending from the first hole toward the outer edge so that the head cannot pass. And a second hole through which the shaft portion can pass, and an engaging means for engaging with the second locking means. .

  In this configuration, a part of the cord in which the lamp is suspended at one end is stored in the embedded main body embedded in the ceiling. The length of the cord from which the lamp is suspended is adjusted by pulling out the cord stored in the embedded body or further storing the cord in the embedded body. Thereby, the height of the lamp is adjusted.

  A mounting plate is attached to the opening of the embedded body. The mounting plate opens the opening when the lamp height is adjusted, and closes the opening after the height adjustment is completed. A first locking means is provided at the edge of the opening of the embedded body, and a first hole and a second hole are provided near the outer edge of the mounting plate. The first locking means is configured such that, after the head portion is passed through the first hole, the shaft portion is slid toward the second hole side, so that the head portion of the first locking means and the second hole are And the mounting plate is locked to the embedded body. Since a gap is provided between the head of the first locking means and the edge of the opening of the embedded main body, the mounting plate is suspended in an open state with respect to the opening.

  Further, the second locking means of the embedded main body and the engaging means of the mounting plate are engaged, so that the mounting plate is attached to the embedded main body with the opening closed.

  (2) A bent portion formed by bending the vicinity of the outer edge of the mounting plate in a direction away from the edge portion includes the second hole.

  In this configuration, when the head of the first locking means is engaged with the second hole and the mounting plate is suspended from the embedded body, the head of the first locking means is bent. Since the bent portion is bent in a direction away from the edge of the opening, the mounting plate is suspended from the embedded body in a state of being largely opened with respect to the opening.

  (3) The mounting plate has a plurality of third holes for passing the cord and locking the cord to the mounting plate.

  In this configuration, a cord with a lamp suspended from one end is passed through the plurality of third holes and locked to the mounting plate. Then, in the state where the mounting plate is opened with respect to the opening and is locked to the embedded body, the position in the length direction of the cord locked to the mounting plate is changed. The length of the cord in between is adjusted.

  According to the present invention, the following effects can be obtained.

  (1) Since the mounting plate is locked to the embedded body when adjusting the lamp height, there is no need to hold the mounting plate with one hand, and the length of the cord can be changed using both hands freely. Can be adjusted. In addition, unlike the case where a temporary suspension member is provided, the mounting plate does not rotate, and it is also necessary to work with care so that the temporary suspension member is not pinched between the mounting plate and the embedded body. Absent. Therefore, the workability of adjusting the lamp height can be improved. Further, since the mounting plate is not dropped due to slipping of the hand, safety can be improved.

  (2) When adjusting the height of the lamp, the mounting plate can be suspended from the embedded main body with the mounting plate largely open, so that the workability of adjusting the height of the lamp can be further improved.

  (3) Since the position in the length direction of the cord locked to the mounting plate is changed in a state where the mounting plate is locked to the embedded main body, the work can be performed using both hands freely, and the workability is good. . Moreover, since the position in the length direction of the cord locked to the mounting plate can be changed with good workability, the length of the cord between the mounting plate and the lamp can be easily adjusted, and the height of the lamp can be adjusted. It can be adjusted easily.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a use state of a lighting fixture 10 according to an embodiment of the present invention. The lighting fixture 10 according to this embodiment includes an embedded body 11, a mounting plate 12, a cover 13, a lamp 14, and a cord 15.

  The lamp 14 includes a lamp 16, a lamp fixture 17 and a shade 18. The lamp 16 and the shade 18 are each attached to a lamp mounting device 17. One end of a cord 15 is fixed to the lamp fixture 17, and the lamp fixture 17 is suspended by the cord 15. The other end of the cord 15 is connected to a power source, and the cord 15 supplies power to the lamp 16.

  The embedded body 11 is formed in a cylindrical shape having an opening 19 (see FIG. 4) at the lower end. The embedded body 11 is embedded in the ceiling, and the opening 19 is opened in the ceiling surface 20. A part of the cord 15 in which the lamp 14 is suspended is accommodated in the embedded body 11. By pulling out the cord 15 in the embedded main body 11, the position of the lamp 14 is lowered, and by storing the cord 15 in the embedded main body 11, the position of the lamp 14 is increased.

  FIG. 2 is a perspective view showing the configuration of the mounting plate 12 and the cover 13. The attachment plate 12 is formed in a substantially disc shape, and is attached to the opening 19 of the embedded body 11 so as to be openable and detachable. The configuration for attaching the mounting plate 12 to the opening 19 is a characteristic part of the present invention, and details will be described later. The cover 13 is formed in a circular shape that is substantially the same size as the mounting plate 12, and has two projections 23 and 24 at positions corresponding to the two cover holes 21 and 22 of the mounting plate 12. The cover 13 is attached to the attachment plate 12 by engaging the cover holes 21 and 22 with the protrusions 23 and 24, respectively. The appearance of the ceiling surface 20 is improved by attaching the cover 13 to the mounting plate 12 in a state where the mounting plate 12 is mounted on the embedded main body 11.

  FIG. 3 is a bottom view showing the configuration of the mounting plate 12. FIG. 4 is a perspective view showing the embedded main body 11 and the mounting plate 12 in an opened state, and FIG. 5 is a front view thereof. The first edge 25a of the opening 19 of the embedded body 11 and a part of the opening 19 that is provided at a position facing the first edge 25a across the axis of the embedded body 11 A first screw 26 and a second screw 27 are screwed into the second edge portion 25b from below in the vertical direction.

  The first screw 26 and the second screw 27 have shaft portions 26a and 27a, and head portions 26b and 27b having diameters larger than the shaft portions 26a and 27a, respectively. The first screw 26 and the second screw 27 are not completely screwed into the first edge 25a and the second edge 25b, respectively, and the heads 26b and 27b, the first edge 25a and the second edge 25b, respectively. A gap is provided between each of the edges 25b. The first edge 25a corresponds to the edge of the present invention. The first screw 26 corresponds to the first locking means of the present invention, and the second screw 27 corresponds to the second locking means of the present invention.

  The mounting plate 12 has a locking hole 28, an engagement hole 29, and three cord holes 30 in addition to the cover holes 21 and 22. The cords 15 are inserted into the three cord holes 30 in a predetermined order, and the cords 15 are locked to the mounting plate 12. The height of the lamp 14 is adjusted by changing the position in the length direction of the cord 15 locked to the mounting plate 12. The cord hole 30 corresponds to a third hole of the present invention. The engagement hole 29 corresponds to the engagement means of the present invention.

  The engagement hole 29 includes a large-diameter portion 31, a small-diameter portion 32 communicating with the large-diameter portion 31, and two protrusions 33 provided at the boundary between the large-diameter portion 31 and the small-diameter portion 32. The large diameter portion 31 is formed larger than the diameter of the head portion 27 b of the second screw 27. The small diameter portion 32 is formed smaller than the diameter of the head portion 27b of the second screw 27 and larger than the diameter of the shaft portion 27a. The distance between the two protrusions 33 is set to be smaller than the diameter of the head portion 27b of the second screw 27 and larger than the diameter of the shaft portion 27a.

  The head 27b of the second screw 27 is passed through the large-diameter portion 31 and the mounting plate 12 is rotated, so that the head 27b passes over the two protrusions 33 and slides to the small-diameter portion 32, and the head 27b becomes the small-diameter portion. 32 is engaged. As a result, the mounting plate 12 is held in a state in which the opening 19 is closed. When the mounting plate 12 closes the opening 19 of the embedded body 11, the lamp 14 is suspended from one end of the cord 15, so that the mounting plate 12 receives a load downward. Accordingly, the head portion 27b cannot get over the protrusion 33 and is locked to the protrusion 33 and does not slide easily toward the large diameter portion 31, so that the mounting plate 12 is prevented from opening against the user's will.

  As shown in FIG. 6, the locking hole 28 is provided in the vicinity of the outer edge of the mounting plate 12. The locking hole 28 includes a round hole 34 and a long hole 35 communicating with the round hole 34 and extending from the round hole 34 toward the outer edge of the mounting plate 12. The round hole 34 corresponds to the first hole of the present invention. The long hole 35 corresponds to the second hole of the present invention. The inner diameter of the round hole 34 is formed larger than the diameter of the head 26 b of the first screw 26. The long hole 35 includes a narrow part 36 close to the round hole 34 and a wide part 37 far from the round hole 34 and close to the outer edge. The width W2 of the wide portion 37 is formed wider than the width W1 of the narrow portion 36. The width W1 and the width W2 are formed to be smaller than the diameter of the head portion 26b of the first screw 26 and larger than the diameter of the shaft portion 26a.

  A first bent portion 38 and a second bent portion 39 are formed in the vicinity of the outer edge of the mounting plate 12. The first bent portion 38 is bent in the direction in which the vicinity of the outer edge of the mounting plate 12 is separated from the first edge 25 a of the opening 19 of the embedded body 11. The first bent portion 38 includes a long hole 35. The first bent portion 38 corresponds to the bent portion of the present invention. As for the 2nd bending part 39, the edge part of the outer edge side of the 1st bending part 38 is further bend | folded in the reverse direction with the 1st bending part 38, and the outer edge of the mounting plate 12 is substantially horizontal Z shape. Is formed.

  As shown in FIG. 7 (a), the outer edge of the mounting plate 12 is bent in two places to form a horizontal Z-shape, so that the height T1 of the mounting plate 12 is one place as shown in FIG. 7 (b). It is made lower than the height T2 of the mounting plate in the case where it is bent at.

  Further, in the long hole 35 of the locking hole 28, the width W 2 of the wide portion 37 far from the round hole 34 is formed larger than the width W 1 of the narrow portion 36 close to the round hole 34. For this reason, when the mounting plate 12 is opened, as shown in FIG. 8, the portion of the head 26b of the first screw 26 that overlaps the elongated hole 35 becomes larger. Therefore, as shown in FIG. 8 (a), the distance between the first bent portion 38 and the second bent portion 39 is reduced, and the height T3 of the mounting plate 12 is shown in FIG. 8 (b). If the wide portion 37 is not formed, the height T4 of the mounting plate 12 can be lowered.

  In the lighting fixture 10 configured as described above, first, the first screw 26 and the long hole 35 of the locking hole 28 are engaged, and then the second screw 27 and the small diameter portion of the engagement hole 29 are engaged. The attachment plate 12 is attached to the embedded main body 11 by engaging with the opening 32, and the opening 19 is closed by the attachment plate 12.

  On the other hand, the mounting plate 12 is slightly rotated with respect to the embedded body 11, the head portion 27 b of the second screw 27 is positioned at the large diameter portion 31 of the engagement hole 29, and the second screw 27 and the engagement hole 29 are positioned. The attachment plate 12 opens the opening 19 by releasing the engagement. At this time, the first screw 26 and the elongated hole 35 of the locking hole 28 are engaged, and the mounting plate 12 is suspended from the first edge 25 a of the embedded body 11.

  Further, from the state in which the mounting plate 12 closes the opening 19, the mounting plate 12 is slightly rotated with respect to the embedded main body 11 to release the engagement between the second screw 27 and the engagement hole 29, Then, the mounting plate 12 is slightly slid with respect to the embedded body 11 so that the first screw 26 is positioned in the round hole 34 of the locking hole 28, and the first screw 26 and the locking hole 28 are engaged. Is released. As a result, the mounting plate 12 is removed from the embedded body 11.

  According to the luminaire 10, the mounting plate 12 can be opened and the opening 19 can be opened in a state where the mounting plate 12 is suspended from the embedded main body 11 without completely removing the mounting plate 12 from the embedded main body 11. There is no need to hold the mounting plate 12 by hand, and the position where the cord 15 is engaged with the mounting plate 12 can be changed using both hands freely. Further, as in the case where the temporary suspension member is provided, the mounting plate 12 is not rotated, and the temporary suspension member is not operated between the mounting plate 12 and the embedded body 11 so as to work. There is no need to do. Therefore, the workability of adjusting the height of the lamp 14 is good, and the height of the lamp 14 can be easily adjusted. Further, since the mounting plate 12 is suspended from the embedded main body 11, the mounting plate 12 is not dropped due to slipping of the hand or the like, so that safety can be improved.

  The cord holes 30 are not limited to three, but are preferably provided with an odd number of three or more. When one or an even number of cord holes 30 are provided, a member for locking the cord 15 to the mounting plate 12 is provided separately. For example, a single cord hole and a cord locking member that sandwiches or winds the cord are provided. After the cord is locked by the cord locking member, the cord is pulled out from the cord hole, and a lamp is suspended from one end of the cord. Lower.

  Moreover, the edge part of the opening part 19 is not limited to being provided in two places which oppose on both sides of the axis center of the embedding main body 11, as mentioned above, and may be provided in three places of the opening part 19. FIG. In this case, a screw is provided at each edge, and a hole that engages with the screw is provided in a portion of the mounting plate 12 corresponding to each edge. However, it goes without saying that one of these holes is the locking hole 28.

It is a front view which shows the use condition of the lighting fixture which concerns on embodiment of this invention. It is a perspective view which shows the structure of a mounting plate and a cover. It is a bottom view which shows the structure of the opening part of a mounting plate and an embedding main body. It is a perspective view which shows an embedding main body and the attachment plate of an open state. It is a front view which shows an embedding main body and the attachment plate of an open state. It is a bottom view which shows the detailed structure of a mounting plate. It is explanatory drawing explaining the structure of the bending part of a mounting plate, (a) shows the structure of this invention, (b) shows the structure of a comparative example. It is explanatory drawing explaining the structure of the bending part of a mounting plate, (a) shows the structure of this invention, (b) shows the structure of a comparative example. It is a bottom view which shows the structure of the mounting plate of the conventional lighting fixture. It is a perspective view which shows the structure of a part of other conventional lighting fixture.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Embedded body 12 Mounting plate 14 Lamp 15 Code 16 Lamp 19 Opening part 20 Ceiling surface 25a 1st edge part (edge part)
26 First screw (first locking means)
26a Shaft portion 26b Head portion 27 Second screw (second locking means)
28 Locking hole 29 Engaging hole (engaging means)
30 cord hole (third hole)
34 Round hole (first hole)
35 Long hole (second hole)
38 1st bending part (folding part)

Claims (1)

An embedded main body that accommodates a part of a cord that is embedded in the ceiling in a cylindrical shape having an opening at at least one end and suspends a lamp;
A mounting plate attached to the opening so as to be freely opened and closed,
The embedded body is provided with a shaft portion provided in a direction perpendicular to the edge portion of the opening portion and a lower end of the shaft portion with a gap between the edge portion and the diameter thereof is increased with respect to the shaft portion. A first locking means comprising a head; and a second locking means that is a part of the opening and is provided at a position separated from the first locking means,
The mounting plate has a first hole through which the head can pass in the vicinity of the outer edge, and extends from the first hole toward the outer edge in communication with the first hole, so that the head cannot pass through. And a second hole through which the shaft portion can pass, and an engagement means that engages with the second locking means,
A bent portion formed by bending the vicinity of the outer edge of the mounting plate in a direction away from the edge portion includes the second hole,
The mounting plate includes a plurality of third holes that pass through the cord and lock the cord to the mounting plate .

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