JP2012089452A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of accurately positioning by restraining rotation in a horizontal direction.SOLUTION: When a lamp 40 of the lighting fixture is stored in a body section 20 by pulling up the lamp with an elevating device 30, cone-shaped guide sections 45 arranged on the lamp 40 and projected in a body section 20 direction can be accurately positioned by restraining rotation in the horizontal direction since they are fitted to receiving sections 25 arranged on the body section 20.

Description

  The present invention relates to a lighting fixture in which a lamp is raised and lowered by a lifting device and can be accommodated and removed from a main body.

  Traditionally, in gymnasiums and factories with high ceilings, commercial facilities, etc., it is possible to move the lighting fixtures up and down in order to safely perform lamp replacement and maintenance inspections near the floor. An elevating lighting fixture is used (see, for example, Patent Document 1).

  As shown in FIG. 5, the luminaire 100 described in Patent Document 1 is moved up and down by an embedded main body 101 that is embedded in a ceiling and an elevating device 102 disposed in the embedded main body 101. A lamp 103 having a rectangular shape, and the lamp 103 stops the ascending operation in the embedded main body 101.

A plurality of guide rollers 105 are provided on the outer peripheral surface of the lamp 103, and the lamp 103 that has entered the interior of the embedded body 101 is positioned while the guide roller 105 is in contact with the inner surface of the embedded body 101.
Further, a buffer member 104 is attached to the upper surface 103A of the lamp 103 in an upward state, and the buffer member 104 has an upper surface 103A of the lamp 103 that has stopped moving up, and an inner back surface 101A of the embedded main body 101. Between the two.

Japanese Patent Laying-Open No. 2005-11682 (FIG. 1)

  However, in the lighting apparatus 100 described in Patent Document 1 described above, since there is a gap of about 1 mm to 2 mm between the guide roller 105 provided in the lamp 103 and the inner surface of the embedded main body 101, the lamp 103 is There is a problem that the gap is rotated in the horizontal direction and accurate positioning cannot be performed.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a luminaire that can perform accurate positioning while suppressing horizontal rotation.

  The lighting fixture of the present invention includes a main body portion having an elevating device and a lamp that moves up and down by the elevating device, and a cone-shaped guide portion protruding in the direction of the main body portion on the upper surface of the lamp. The main body is provided with a receiving part into which the guide part is fitted.

  Moreover, the lighting fixture of this invention is provided with two or more said guide parts, and is arrange | positioned symmetrically centering on a longitudinal direction center.

  Moreover, when the said guide part fits into the said receiving part, the said receiving part is movable to the upward direction in the lighting fixture of this invention.

  Furthermore, the lighting fixture of the present invention is such that when the guide portion is fitted into the receiving portion, the guide portion is movable downward.

  In the present invention, when the lamp is lifted by the lifting device and accommodated in the main body, the cone-shaped guide provided on the lamp and protruding toward the main body fits into the receiving portion provided on the main body. Therefore, it is possible to provide a luminaire having an effect that accurate positioning can be performed while suppressing horizontal rotation.

(A) is a partially broken front view of the lighting fixture of embodiment concerning this invention, (B) is sectional drawing. Perspective view of the lighting fixture with the lamp lowered (A) is a perspective view of the guide part of a quadrangular pyramid, (B) is a perspective view of the guide part of a cone. Enlarged view of the guide section Perspective view of a conventional hanging lighting fixture

Hereinafter, the lighting fixture of embodiment which concerns on this invention is demonstrated using drawing.
As shown in FIG. 1, the lighting fixture 10 of embodiment which concerns on this invention can be used by being embedded in to-be-attached parts, such as the ceiling surface 11 of a high place.
As illustrated in FIG. 2, the lighting fixture 10 includes an embedded main body 20 that is a main body embedded in the ceiling surface 11 and the like, and a lamp 40 that is moved up and down by an elevating device 30 provided in the embedded main body 20.

The lamp 40 has a bottomed box-shaped lamp body 41 that opens downward, and a frame that contacts the lower surface of the embedded body 20 when the lamp 40 is raised to the upper limit at the lower end of the lamp body 41. 42 is attached to project outward.
Further, inside the lamp body 41, for example, a downlight, a spotlight or the like that can adjust the irradiation angle of the illumination light is provided as the light source 43.

  A cable mounting base 44 for attaching a lift cable 31 described later is attached to the central portion of the top plate 411 of the lamp body 41. Further, a conical guide portion 45 protruding in the direction of the embedded body 20 (that is, upward) is attached to the top surface of the top plate 411. A plurality of (for example, two) guide portions 45 are provided, and are arranged at symmetrical positions with the center in the longitudinal direction as an axis, that is, at symmetrical positions with the cable mount 44 interposed therebetween.

A triangular pyramid shape can be adopted as the conical guide portion 45. In addition, a quadrangular pyramid as shown in FIG. 3 (A) and a conical shape as shown in FIG. 3 (B) can be adopted, but not limited to this, other conical shapes can be adopted. .
Here, a case of a triangular pyramid will be described.

The guide portion 45 is movable downward when fitted to a receiving portion 25 described later. That is, as shown in FIG. 4, a bearing 461 is attached to the top plate 411 of the lamp body 41, and a shaft 462 extending upward is supported by this bearing 461 with its lower end supported.
A sliding portion 463 is provided on the upper portion of the shaft 462 so as to be slidable in the vertical direction along the shaft 462, and a spring 464 is provided between the sliding portion 463 and the bearing 461. The moving part 463 is constantly biased upward. Since the guide portion 45 is attached to the upper end of the sliding portion 463, the guide portion 45 is movable in the vertical direction.

  As shown in FIG. 2, the embedded main body 20 includes a frame-shaped edge plate 211 that is exposed on the lower surface of the ceiling surface 11 in a mounted state, and a rectangular shape that stands up along the inner edge of the edge plate 211. The frame member 21 includes a frame 212. The above-described frame 42 of the lamp 40 abuts against the frame member 21 when the lamp 40 is raised, thereby restricting the rise of the lamp 40.

Four plate-like support members 22 are attached upward on the outer side surface 212A in the width direction in the vicinity of the corner of the rectangular frame 212, and the attachment plate 23 is horizontally attached to the upper end of the support member 22. It is attached. An elevating device 30 is attached on the attachment plate 23. The lifting device 30 has two lifting cables 31 that pass through the mounting plate 23 and wind up and down.
In addition, since the raising / lowering apparatus 30 can use a conventional raising / lowering apparatus conventionally, detailed description is abbreviate | omitted.

A slit 221 is provided along the vertical direction at the center in the width direction of each support member 22, and the receiving portion support member 24 is movable up and down along the slit 221 between the support members 22 facing each other. Is provided. A receiving portion 25 into which the guide portion 45 of the lamp 40 described above is fitted is attached to the center of the receiving portion support member 24 so as not to rotate. At this time, the triangular direction of the triangular pyramid of the receiving portion 25 and the direction of the triangular pyramid of the guide portion 45 are set to coincide with each other with high accuracy.
Therefore, the receiving part 25 is attached to be movable up and down.

  The inner surface shape of the receiving portion 25 is similar to the outer surface shape of the guide portion 45. That is, here, since the guide portion 45 has a triangular pyramid shape, it has a triangular pyramid shape. Further, the inner surface shape of the receiving portion 25 is larger than the outer surface shape of the guide portion 45, and when the guide portion 45 is fitted to the receiving portion 25, the entire guide portion 45 is fitted.

Next, the raising / lowering operation | movement of a lamp is demonstrated.
The lamp 40 is disposed below the embedded body 20 attached to the ceiling surface 11 or the like at a high place, and the lifting cable 31 is wound up by the lifting device 30 of the embedded body 20.
When the lamp 40 reaches the embedded main body 20, the guide portion 45 of the lamp 40 rises while being fitted to the receiving portion 25 of the embedded main body 20. At this time, when the guide portion 45 is fitted into the receiving portion 25, the lamp 40 is raised while rotating so that the position and orientation of the lamp 40 with respect to the embedded body 20 coincide.
In this state, the frame 42 of the lamp 40 is not yet in contact with the frame member 21 of the embedded main body 20, so that the rising of the lamp 40 is not restricted.

When the elevating cable 31 is further wound up with the guide portion 45 fitted to the receiving portion 25, the guide portion 45 moves downward against the spring 464 and the receiving portion support member 24 to which the receiving portion 25 is attached. Moves upward along the slit 221.
When the frame 42 of the lamp 40 comes into contact with the frame member 21 of the embedded main body 20, the rising of the lamp 40 is restricted and the attachment is completed.

Next, when lowering the lamp 40, the lifting / lowering cable 30 is extended by the lifting device 30 to lower the lamp 40. At this time, the guide portion 45 is lifted by the urging force of the spring 464 and returns to the original position. Moreover, the receiving part 25 falls by gravity and returns to a lower end position.
If the receiving portion 25 is held in the raised position, the height position of the receiving portion 25 at the time of attachment is determined, so that when the lamp 40 is raised next, the receiving portion 25 is raised. The guide portion 45 can be fitted.

  As described above, according to the lighting fixture 10 of the embodiment according to the present invention described above, when the lamp 40 is pulled up by the lifting device 30 and accommodated in the embedded body 20, the lamp 40 is provided and protrudes toward the embedded body 20. Since the cone-shaped guide portion 45 thus fitted fits into the receiving portion 25 provided in the embedded main body 20, the lamp 40 can be accurately positioned while suppressing the rotation in the horizontal direction.

  In addition, since a plurality of guide portions 45 are provided and are arranged symmetrically with respect to the center in the longitudinal direction, accurate positioning can be performed while suppressing horizontal rotation.

  Further, since the receiving portion 25 is movable upward when the guide portion 45 is fitted to the receiving portion 25, it is not necessary to adjust the position in the vertical direction, and the position adjustment of the guide portion 45 and the receiving portion 25 can be easily performed. . Moreover, the impact at the time of fitting can be relieved.

  Further, when the guide portion 45 is fitted to the receiving portion 25, the guide portion 45 is movable downward, so that the vertical position adjustment is not necessary, and the position adjustment of the guide portion 45 and the receiving portion 25 can be easily performed. . Moreover, the impact at the time of fitting can be relieved.

In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, in the above-described embodiment, the guide portion 45 and the receiving portion 25 are illustrated as having a triangular pyramid shape. However, in addition, a conical shape or a polygonal pyramid shape may be used.
When a conical shape is applied to the guide portion 45, the receiving portion 25 may have a pyramid shape that is not similar to a cone.

In the above-described embodiment, the case where a plurality (two) of the guide portions 45 and the receiving portions 25 are used at the symmetrical positions has been illustrated. By providing it in the center of the bayonet 20 and the lamp 40, it is possible to perform directionality and positioning with one guide portion 45 and the receiving portion 25.
In this case, it is necessary to attach the guide part 45 and the receiving part 25 so that the directions of the guide part 45 and the receiving part 25 do not rotate even when moving up and down.

  Further, a guide roller 47 (see FIG. 1) may be provided on the outer surface of the lamp 40.

10 lighting fixtures 20 embedded body (main body)
25 Receiving part 30 Lifting device 40 Lamp 411 Top plate 45 Guide part

Claims (4)

A main body having a lifting device;
A lamp that moves up and down by the lifting device,
On the upper surface of the lamp, a cone-shaped guide portion that protrudes toward the main body portion is provided,
A lighting fixture in which the main body is provided with a receiving portion into which the guide is fitted. The lighting fixture according to claim 1,
A plurality of the guide portions are provided, and the lighting fixtures are arranged symmetrically about the center in the longitudinal direction. The lighting fixture according to claim 1 or 2,
A lighting fixture in which the receiving portion is movable upward when the guide portion is fitted into the receiving portion. In the lighting fixture of any one of Claims 1 thru | or 3,
A lighting fixture in which the guide portion is movable downward when the guide portion is fitted to the receiving portion.

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