JP5252594B2 - Anti-rotation member for direct lighting equipment and direct lighting equipment - Google Patents

Description

  The present invention relates to a rotation preventing member for a direct lighting fixture for preventing unexpected rotation of the direct lighting fixture installed on the wall surface, and a direct lighting fixture equipped with the rotation preventing member.

  Direct lighting equipment is a type of lighting equipment that is installed in a rosette fixedly installed on a wall surface such as a ceiling surface via an adapter, and is named because it has an appearance that is attached directly to the wall surface. It is a thing. Below, it abbreviates as a lighting fixture.

  FIG. 5 is a view showing an example of a lighting fixture equipped with a rotation preventing member according to the prior art, in which (a) is a plan view and (b) is a side view of the lighting fixture in a state of being attached to a wall surface. Fig.5 (a) is the top view seen from the EF side shown in FIG.5 (b). In FIG. 5, the luminaire 1 includes a luminaire main body 2 equipped with a lamp and its lighting circuit, and a glass or the like that is attached to the lower surface of the luminaire main body 2 to cover the lamp and the like equipped on the luminaire main body 2. It consists of a globe 3 made of optical material, an adapter 4 used for installing the lighting fixture 1 on the wall surface, and an anti-rotation member 6 fixedly installed on the upper surface 5 of the lighting fixture body 2.

  As shown in FIG. 5 (b), the lighting fixture 1 is attached to the wall surface 7 by being attached to a rosette (not shown) fixedly installed on the wall surface 7 (for example, the ceiling surface) via an adapter 4. Fixed installation. The outline of installation is as follows. The adapter 4 has two locking projections (not shown) for locking to the rosette. The locking projection is inserted into a hole (not shown) in the rosette and rotates in a predetermined direction. Thereby, the rosette and the adapter 4 are fixed. Thereafter, the luminaire main body 2 is fixed to the wall surface 7 by fixing the luminaire main body 2 to the adapter 4. Next, the globe 3 is attached to the luminaire body 2 by rotating it. When replacing the lamp mounted in the luminaire main body 2, the glove 3 is removed by rotating in the reverse direction of the mounting, and after the replacement, the glove 3 is mounted on the luminaire main body 2 again.

  Thus, a rotational load is applied to the luminaire main body 2 by the rotation operation when the globe 3 is attached and detached, and this load is transmitted to the adapter 4 installed in the luminaire main body 2. When the load direction is opposite to the direction in which the adapter 4 is rotated in order to be locked to the rosette, the adapter 4 may be detached from the rosette and the luminaire 1 may fall from the wall surface 7. The rotation preventing member 6 has a function of preventing rotation in the direction opposite to that when the lighting fixture body 2 is attached to the wall surface 7. The rotation preventing member 6 prevents rotation of the lighting fixture body 2 with respect to the wall surface 7 in the reverse direction, thereby preventing the lighting fixture 1 from dropping.

  Patent Document 1 describes an example in which an elastic member is used as the rotation preventing member 6. In this example, an anti-rotation mechanism having an elastic member as the anti-rotation member 6 is provided on the upper surface (chassis) of the lighting fixture, and the elastic member is pressed against the ceiling surface with a predetermined load.

JP-A-6-251610

  FIG. 6 is a diagram for explaining a rotation preventing member according to the prior art, FIG. 6 (a) is a view showing the structure of the rotation preventing member, and FIG. 6 (b) is a view showing a state of the rotation preventing member when the lighting fixture is attached. FIG.6 (c) is a figure which shows the state of a rotation prevention member when a rotational load is added to the lighting fixture main body.

  In Fig.6 (a), the rotation prevention member 6 is shown with a top view and GH sectional drawing. The rotation preventing member 6 shown in FIG. 6B shows a state when the lighting fixture 1 to which the rotation preventing member 6 is attached is attached to the wall surface 7. In a state where the lighting fixture 1 is attached to the wall surface 7, the rotation preventing member 6 is pressed against the wall surface 7 with a predetermined load (load direction a), and the thickness T of the rotation preventing member 6 is reduced by ΔT due to this load. .

  FIG. 6C shows a state in which a rotational load is applied to the luminaire body 2. The direction of this rotational load is shown as the load direction b. The rotation in the load direction b is prevented by the frictional force between the rotation preventing member 6 and the wall surface 7. The frictional force is determined by the force applied to the contact surface between the rotation preventing member 6 and the wall surface 7. Therefore, in order to obtain a necessary and sufficient frictional force to resist rotation against the rotational load, it is necessary to press the rotation preventing member 6 against the wall surface 7 with a predetermined load in the load direction 1.

  However, this pressing force is not preferable because it is applied to the wall surface 7, the rosette and the adapter 4 as a load.

  In view of such a situation, the present invention provides a rotation preventing member for a direct-mounted lighting fixture that can suppress the load applied to the wall surface, the rosette, and the adapter in a state where the lighting fixture is installed on the wall surface, and can prevent the rotation of the lighting fixture body. And it aims at providing a direct attachment lighting fixture.

An anti-rotation member for a direct lighting apparatus according to the present invention is:
A rotation preventing member directly install them for direct mounting luminaires to the wall via a rosette fixed to the wall,
The base,
A plurality of plate-like elastic bodies arranged at predetermined intervals, each having a predetermined inclination angle with respect to a plane orthogonal to the lower surface of the base, and fixed to the base;
Equipped with a,
The surface of the plate-like elastic body on the side opposite to the base portion is in a direction in which the plate-like elastic body is inclined with respect to the surface perpendicular to the bottom surface of the base portion, and is parallel to the surface parallel to the bottom surface of the base portion. Is inclined .

Direct lighting fixture according to the present invention,
A direct-attached lighting fixture that is directly attached to the wall surface via a rosette fixed to the wall surface,
An adapter that has a locking projection, inserts the locking projection into the rosette, and rotates by a predetermined angle to lock the rosette;
A lighting fixture body fixed to the adapter;
A translucent glove that rotates and locks to the luminaire body to cover the half of the luminaire body;
A rotation prevention member mounted on opposite sides on the walls of the luminaire body,
With
The rotation preventing member is
The base,
A plurality of plate-like elastic bodies disposed at predetermined intervals in the rotation direction of the locking projections and having a predetermined inclination angle with respect to a surface orthogonal to the lower surface of the base portion, and fixed to the base portion;
Equipped with a,
The surface of the plate-like elastic body on the side opposite to the base portion is in a direction in which the plate-like elastic body is inclined with respect to the surface perpendicular to the bottom surface of the base portion, and is parallel to the surface parallel to the bottom surface of the base portion. And in contact with the wall surface at at least a part of each surface on the side opposite to the base in the state where the direct lighting fixture is attached to the wall surface .

  According to the rotation preventing member for a direct lighting apparatus according to the present invention, it is possible to suppress a load applied to the wall surface, the rosette, and the adapter while the direct lighting apparatus is installed on the wall surface, and to prevent the rotation of the lighting apparatus main body. By providing this rotation preventing member, it is possible to provide a direct-attached lighting fixture that can prevent the rotation of the lighting fixture body.

It is a figure explaining the example of the rotation prevention member which concerns on embodiment of this invention, (a) The figure which shows the structure of a rotation prevention member, (b) The figure which shows the state of the rotation prevention member at the time of lighting fixture installation, (c) It is a figure which shows the state of a rotation prevention member when a rotation load is added to the lighting fixture main body. It is a top view which shows the example of the direct attachment lighting fixture equipped with the rotation prevention member which concerns on embodiment. It is a figure which shows the example of the rotation prevention member which concerns on the modification of embodiment of this invention. It is a top view which shows the example of the lighting fixture equipped with the rotation prevention member which concerns on the modification of embodiment. It is a figure which shows the example of the lighting fixture equipped with the rotation prevention member which concerns on a prior art, (a) Top view, (b) The side view of the lighting fixture in the state attached to the wall surface. It is a figure explaining the rotation prevention member which concerns on a prior art, (a) The figure which shows the structure of a rotation prevention member, (b) The figure which shows the state of the rotation prevention member at the time of lighting fixture attachment, (c) It rotates to the lighting fixture main body It is a figure which shows the state of the rotation prevention member when a load is added.

(Embodiment)
FIG. 1 is a view for explaining an example of a rotation preventing member according to an embodiment of the present invention. FIG. 1 (a) is a view showing the structure of the rotation preventing member, and FIG. 1 (b) is a rotation preventing member when a lighting fixture is attached. FIG. 1C is a diagram illustrating a state of the rotation preventing member when a rotational load is applied to the luminaire main body. The structure and function of the rotation preventing member of this embodiment will be described with reference to FIG.

  In Fig.1 (a), the rotation prevention member 6 which concerns on this embodiment is shown with a top view and AB sectional drawing. The anti-rotation member 6 has a predetermined inclination angle θ with respect to a surface orthogonal to the base 61 and the lower surface of the base 61 (a mounting surface 64 described later), as shown in the A-B cross-sectional view. There are provided a plurality of plate-like elastic bodies 62 which are arranged at a predetermined interval and fixed to the base 61 or integrated with the base 61 (referred to as “fixed together”). The contact surface 63 is a portion indicated by a white portion extending radially in the plan view of FIG. 1A, and is a surface located on the side opposite to the base portion 61 of each plate-like elastic body 62. The attachment surface 64 is a lower surface of the base 61 and is attached to the rotation preventing member 6 on the upper surface 5 of the luminaire body 2 as shown in FIG. Therefore, in the state attached to the lighting fixture main body 2, the rotation preventing member 6 contacts the wall surface 7 at the contact surface 63. The contact surface 63 is inclined by an angle φ with respect to a surface (assuming the wall surface 7) parallel to the mounting surface 64. φ may have the same value as θ. In the example shown in the plan view of FIG. 1A, each plate-like elastic body 62 extends radially and is annularly arranged at predetermined angular intervals along the illustrated circumferential direction of the sector. The hatched portion in the plan view of FIG. 1A shows a part of the side surface of the plate-like elastic body 62. T shown in the figure is the thickness of the rotation preventing member 6. The elastic body of the plate-like elastic body 62 used for the rotation preventing member 6 may be a cushioning material, and hereinafter, the plate-like elastic body 6 is a term including a plate-like cushioning material.

  An anti-rotation member 6 shown in FIG. 1B shows a state of the anti-rotation member 6 when the lighting fixture 1 to which the anti-rotation member 6 is attached is attached to the wall surface 7 as shown in FIG. The rotation prevention member 6 contacts the wall surface 7 at the contact surface 63 and is pressed with a predetermined load in the direction of the wall surface 7 (load direction a). Since the contact surface 63 is inclined with respect to the wall surface 7, a part of the contact surface 63 is in contact with the wall surface 7, and the contacted portion is crushed by the load. It acts as a spring and the inclination angle of the plate-like elastic body 62 becomes θ ′ larger than θ. As a result, the thickness T of the rotation preventing member 6 decreases by ΔT and becomes T−ΔT.

  The anti-rotation member 6 shown in FIG. 1 (c) is attached to the upper surface 5 of the luminaire main body 2 as shown in FIG. 5 when a force is applied to the base 61 in the illustrated load direction b. Indicates the state. At this time, the contact surface 63 of the plate-like elastic body 62 is difficult to move due to friction with the wall surface 7, so the inclination angle θ ′ of the plate-like elastic body 62 becomes a smaller angle. When the inclination angle is reduced, the angle φ between the contact surface 63 and the wall surface 7 is also reduced, and the contact area is increased accordingly. FIG. 1C shows a state when the entire contact surface 63 comes into contact with the wall surface 7. The inclination angle near the base 61 of the plate-like elastic body 62 at this time is θ ″. Since the plate-like elastic body 62 acts as a leaf spring, the inclination angle changes depending on the distance from the base 61. In the state 1 (c), the inclination angle of the plate-like elastic body 62 in the vicinity of the wall surface 7 is approximately 0 degrees.

  The rotation preventing function of the rotation preventing member 6 will be described. Since the contact surface 63 is inclined with respect to the wall surface 7 as shown in FIG. 1B, the contact between the contact surface 63 and the wall surface 7 starts from the protruding edge portion of the contact surface 63. Therefore, even if the load is small, the thickness of the rotation preventing member 6 can be reduced as much as the conventional rotation preventing member 6. Further, the rotation preventing member 6 also functions as a leaf spring because the plate-like elastic body 62 is inclined and arranged at a predetermined interval. In addition to this effect, the anti-rotation member 6 is formed of an integral elastic body as in the conventional example, and the anti-rotation member 6 can be made with less force than when the anti-rotation member 6 is in contact with the wall surface 7 on the entire surface facing the wall surface. The thickness can be reduced to the same level as the conventional example.

  In this way, the overall thickness T of the rotation preventing member 6 decreases by ΔT. The interval between the wall surface 7 and the luminaire body 2 is fixed at T-ΔT. At this time, ΔT determines the load applied to the wall surface 7, the rosette, and the adapter 4, but the load is smaller than that when the conventional anti-rotation member 6 is used as described above.

  Next, when a load is applied to the lighting fixture main body 2 shown in FIG. 5 in a direction in which rotation is desired to be prevented, the rotation preventing member 6 is in the state shown in FIG. The rotation preventing member 6 is installed such that the direction of inclination of the plate-like elastic body 62 is the same as the load direction b.

  In the anti-rotation member 6 in the state of FIG. 1C, the plate-like elastic body 62 that was initially inclined rises, so the length in the thickness direction of the plate-like elastic body 62 is compressed. Therefore, a larger load is applied to the wall surface 7 than in the case of FIG. At this time, the load applied from the plate-like elastic body 62 to the wall surface 7 and the like is a case where the force generated by the reduction in the thickness of the plate-like elastic body 62 in the raised state and the inclination of the plate-like elastic body 62 remain. Due to the inclination, the force generated as a leaf spring is combined. This load obviously increases as compared with the load applied to the wall surface 7 in the normal installation state where the force in the load direction b is not working.

  Since the frictional force is proportional to the stress from the contact surface 63 applied to the wall surface 7 multiplied by the contact area, the frictional force is eventually proportional to the load applied to the wall surface 7 via the contact surface 63. Therefore, the frictional force is significantly larger than the frictional force calculated from the load on the wall surface 7 or the like in the installed state, and rotation of the lighting fixture body 2 in an undesirable direction can be prevented.

  As described above, when the rotation preventing member 6 according to the present embodiment is used in the lighting fixture 1, the load of the installation state applied to each of the wall surface 7, the rosette, and the adapter 4 is reduced, and rotation occurs in an unfavorable direction. Only the load applied to the wall surface 7 can be automatically increased. As a result, the frictional force between the wall surface 7 and the rotation preventing member 6 can be increased, and undesirable rotation of the lighting fixture body 2 can be prevented.

  FIG. 2 shows an example in which four rotation preventing members 6 shown in FIG. 1A are attached to the upper surface 5 of the luminaire main body 2 by the respective attachment surfaces 64 in a rotationally symmetrical manner in the circumferential direction. The rotation preventing member 6 has the mounting direction 64 of the base 61 on the cross-sectional view taken along the line A-B in FIG. The plate-like elastic body 62 is arranged so that the inclination direction of the plate-like elastic body 62 with respect to the plane perpendicular to the direction is substantially the same as the direction of rotation of the lighting fixture main body 2 to be prevented. The positional relationship between the luminaire 1 equipped with the rotation preventing member 6 and the wall surface 7 is the same as the example shown in FIG.

  By arranging the rotation preventing member 6 in this way, the rotation direction of the lighting fixture body 2 to be prevented is almost the same as the load direction b in FIG. Nevertheless, it has a sufficient anti-rotation function.

  Although FIG. 2 shows an example in which four rotation preventing members 6 are arranged rotationally symmetrically on the circumference, the present invention is not limited to this example. The arrangement may not be rotationally symmetric, only one may be provided, or an annular one may be provided.

  In FIG. 3, the rotation prevention member 6 which concerns on the modification of this embodiment is shown. The anti-rotation member 6 has a plurality of plate-like elastic bodies 62 arranged in parallel with each other at a predetermined interval. The contact surface 63 also has a rectangular shape instead of a sector shape. Except for this point, it is the same as the case shown in FIG. 1, and has the same anti-rotation function.

  FIG. 4 is a plan view showing an example of a lighting fixture equipped with a rotation preventing member according to a modification of the embodiment. In the figure, a plurality of anti-rotation members 6 according to this modification are arranged on the circumference of the upper surface 5 of the luminaire body 2. Each rotation preventing member 6 is arranged such that the arrangement direction of the plurality of plate-like elastic bodies 62 constituting each rotation substantially coincides with the rotation direction of the lighting fixture body 2.

  Even when the anti-rotation member 6 shown in FIG. 3 is attached to the lighting fixture 1 as shown in FIG. 4, the anti-rotation member 6 is attached to the lighting fixture main body 2 in spite of a small pressing load on the wall surface 7 or the like. It has a sufficient anti-rotation function.

  The rotation preventing member 6 shown in FIGS. 1 and 3 is formed by integrally forming the base 61 and the columnar elastic body 62. The base 61 and the columnar elastic body 62 are separately manufactured, and both are assembled and fixed. You can make it. The integral molding is easier to manufacture, but if it is not integral molding, the material of the base 61 and the columnar elastic body 62 can be separated. Therefore, it is possible to freely select a material suitable for the columnar elastic body 62 that comes into contact with the wall surface 7 and forms a frictional force, and a material suitable for the base 61 that supports and fixes the columnar elastic body 2. There are advantages.

  Although the above description has illustrated the ceiling surface as the wall surface 7 to which the lighting fixture 1 is attached, the wall surface 7 to be attached need not be limited to the ceiling surface. For example, also when attaching the lighting fixture 1 to the side surface of a room, the effect similar to the effect demonstrated so far can be show | played by using the rotation prevention member 6 of this embodiment.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Additional remark 1) The rotation prevention member for direct attachment lighting fixtures which prevent the rotation of the direct attachment lighting fixture directly attached to the said wall surface via the rosette fixed to the wall surface with respect to the said wall surface,
The base,
A plurality of plate-like elastic bodies arranged at predetermined intervals, each having a predetermined inclination angle with respect to a plane orthogonal to the lower surface of the base, and fixed to the base;
An anti-rotation member for a direct-mounted lighting fixture, comprising:

(Appendix 2) The base and the plurality of plate-like elastic bodies are integrally molded.
The anti-rotation member for a direct-mounted luminaire according to Supplementary Note 1, wherein

(Appendix 3) The base and the plurality of plate-like elastic bodies are molded from different materials and integrated with each other.
The anti-rotation member for a direct-mounted luminaire according to Supplementary Note 1, wherein

(Supplementary Note 4) The surface of the plate-like elastic body on the side opposite to the base portion is parallel to the bottom surface of the base portion in a direction in which the plate-like elastic body is inclined with respect to a surface orthogonal to the bottom surface of the base portion. Inclined to the surface,
The rotation preventing member for a direct-mounted lighting device according to any one of appendices 1 to 3, wherein

(Additional remark 5) It is the direct attachment lighting fixture attached directly to the said wall surface through the rosette fixed to the wall surface,
An adapter that has a locking projection, inserts the locking projection into the rosette, and rotates by a predetermined angle to lock the rosette;
A lighting fixture body fixed to the adapter;
A translucent glove that rotates and locks to the luminaire body to cover the half of the luminaire body;
An anti-rotation member mounted on a surface of the luminaire main body that faces the wall surface, and prevents rotation of the luminaire main body.
The rotation preventing member is
The base,
The locking projection is disposed at a predetermined interval in the rotation direction, and is fixed to the base portion with a predetermined inclination angle with respect to a surface orthogonal to the lower surface of the base portion. A plurality of plate-like elastic bodies that are in contact with the wall surface at a part of each surface on the side opposite to the base,
A direct-mounted luminaire characterized by comprising:

(Appendix 6) The plate-like elastic body is inclined with respect to a surface orthogonal to the lower surface of the base portion in a rotation direction of the locking protrusion when the adapter is locked to the rosette.
The direct-attached lighting device according to appendix 5, wherein

(Appendix 7) The surface of the plate-like elastic body on the side opposite to the base portion is parallel to the bottom surface of the base portion in a direction in which the plate-like elastic body is inclined with respect to a surface orthogonal to the bottom surface of the base portion. Inclined to the surface,
The direct-attached lighting device according to appendix 5 or 6, characterized in that.

(Appendix 8) The plurality of plate-like elastic bodies and the base are molded integrally.
The direct lighting device according to any one of appendices 5 to 7, characterized in that:

(Appendix 9) The plurality of plate-like elastic bodies and the base are molded from different materials, and these are integrated.
The direct lighting device according to any one of appendices 5 to 7, characterized in that:

(Additional remark 10) The said rotation prevention member is cyclically | annularly arrange | positioned in the circumferential direction of rotation of the said direct attachment lighting fixture main body,
The direct-attached lighting device according to any one of appendices 5 to 9, characterized in that:

(Supplementary Note 11) A plurality of the rotation preventing members are arranged in the circumferential direction of the rotation of the direct lighting fixture body.
The direct-attached lighting device according to any one of appendices 5 to 9, characterized in that:

1 Direct lighting equipment (abbreviated as lighting equipment)
DESCRIPTION OF SYMBOLS 2 Lighting fixture main body 3 Globe 4 Adapter 5 Upper surface of lighting fixture main body 6 Anti-rotation member 7 Wall surface 61 Base 62 Plate-like elastic body 63 Contact surface 64 Mounting surface

Claims (5)

A rotation preventing member directly install them for direct mounting luminaires to the wall via a rosette fixed to the wall,
The base,
A plurality of plate-like elastic bodies arranged at predetermined intervals, each having a predetermined inclination angle with respect to a plane orthogonal to the lower surface of the base, and fixed to the base;
Equipped with a,
The surface of the plate-like elastic body on the side opposite to the base portion is in a direction in which the plate-like elastic body is inclined with respect to the surface perpendicular to the bottom surface of the base portion, and is parallel to the surface parallel to the bottom surface of the base portion. Tilted,
An anti-rotation member for a direct-mounted luminaire characterized by the above. A direct-attached lighting fixture that is directly attached to the wall surface via a rosette fixed to the wall surface,
An adapter that has a locking projection, inserts the locking projection into the rosette, and rotates by a predetermined angle to lock the rosette;
A lighting fixture body fixed to the adapter;
A translucent glove that rotates and locks to the luminaire body to cover the half of the luminaire body;
A rotation prevention member mounted on opposite sides on the walls of the luminaire body,
With
The rotation preventing member is
The base,
A plurality of plate-like elastic bodies disposed at predetermined intervals in the rotation direction of the locking projections and having a predetermined inclination angle with respect to a surface orthogonal to the lower surface of the base portion, and fixed to the base portion;
Equipped with a,
The surface of the plate-like elastic body on the side opposite to the base portion is in a direction in which the plate-like elastic body is inclined with respect to the surface perpendicular to the bottom surface of the base portion, and is parallel to the surface parallel to the bottom surface of the base portion. In contact with the wall surface in at least a part of each surface on the side opposite to the base in the state of attachment to the wall surface of the direct lighting fixture,
Direct lighting equipment characterized by that. The plate-like elastic body is inclined with respect to a surface orthogonal to the lower surface of the base portion in the rotation direction of the locking protrusion when the adapter is locked to the rosette.
The direct lighting apparatus according to claim 2 , wherein: The rotation preventing member is annularly arranged in the circumferential direction of the rotation of the direct-attached lighting fixture body,
The direct lighting apparatus according to claim 2 or 3 , wherein A plurality of the rotation preventing members are arranged in the circumferential direction of the rotation of the direct-attached lighting fixture main body,
The direct lighting apparatus according to claim 2 or 3 , wherein

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