JP2010049833A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture 1 enabled to set a distance between an inner frame part 4 and an outer frame part 5 without being affected by their diameters, and capable of rotating a lamp tool 2 smoothly. <P>SOLUTION: The lighting fixture is provided with a movable stopper 100, an inner frame part 4 on which a lamp tool 2 is mounted, an outer frame part 5 mounting the inner frame part 4 in free rotation in a peripheral frame direction inside nearly a cylindrical shape, a fixed stopper 14 arranged at the inner frame part 4 or an upper side of the outer frame part 5 for regulating rotation of the inner frame part 4, a movable stopper 100 in sliding contact with the fixed stopper 14 by rotation of the inner frame part 4, and a movable stopper mounting part 200 mounting the movable stopper 100 for determining a stroke volume of sliding of the movable stopper 100. Thus, a space interval between the inner frame part 4 and the outer frame part 5 can be set without being affected by diameters of the same, and the lamp tool 2 can be smoothly rotated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique for rotating a lamp of a lighting fixture.

  In the illumination direction variable type lighting fixture, it is necessary to limit the rotation angle with a stopper for the purpose of protecting the electric wires coming out of the lamps in the horizontal direction. Normally, a method of limiting by the interference of the projections provided on both the support column fixed to the ceiling and the movable lamp unit is general, but in this case, the rotation angle becomes 360 ° or less due to the thickness of the projection. There was a problem that blind spots occurred in the irradiation range.

  As a technique for solving this problem, there is a technique for preventing the rattling of the lamp and moving the stopper so that the rotation angle of the lamp becomes 360 °. (For example, refer to Patent Document 1.)

JP 2000-348528 A (paragraph “0012”, FIGS. 4 and 5)

  However, since the movable stopper protrudes inward when the diameter of the frame is reduced, it is required to reduce the diameter of the lamp, and there is a possibility that the light of the lamp cannot be efficiently emitted from the lamp to the irradiation area. .

  In addition, since the sides of both ends of the substantially flat surface of the movable stopper are in contact with the curved surface of the frame, the movable stopper can be moved by the catch (friction force) when the movable stopper contacts the frame. There was a fear that it would be difficult.

  Also, when the stopper fixed to the projecting part of the movable stopper comes into contact, the movable stopper may be deformed along the curved surface of the frame, and when the movable stopper is greatly deformed, the stopper There was a risk that the lamp would rotate over the road.

  The present invention enables, for example, the spatial distance between the inner frame portion and the outer frame portion to be set without being affected by the diameters of the inner frame portion and the outer frame portion, and allows the lamp to rotate smoothly. The purpose is to obtain a luminaire.

  The lighting fixture according to the present invention has a movable stopper, a substantially cylindrical shape, an inner frame portion to which a lamp is attached, a substantially cylindrical shape, and the inner frame portion in the direction of the peripheral frame portion inside the substantially cylindrical shape. An outer frame portion that is rotatably attached, a fixed stopper that is disposed on the inner frame portion or on the upper side of the outer frame portion, and that controls the rotation of the inner frame portion. A movable stopper that contacts and slides, and a movable stopper mounting portion that determines the amount of stroke that the movable stopper slides while the movable stopper is mounted.

  According to the present invention, the spatial distance between the inner frame portion and the outer frame portion can be set without being affected by the diameters of the inner frame portion and the outer frame portion, and the lamp can be smoothly rotated.

Embodiment 1 FIG.
The structure of the lighting fixture of this Embodiment is demonstrated using FIG. 1, FIG.

  FIG. 1 is a perspective view showing the lighting fixture of the present embodiment, and FIG. 2 is an exploded perspective view of the lighting fixture of FIG.

  The luminaire 1 includes a lamp 2, an inner frame part 4 to which the lamp 2 is attached via an arm part 3, an outer frame part 5 to which the inner frame part 4 is attached, and an outer periphery of the outer frame part 5. A mounting spring 6 to be mounted, a dust guard 7, and support columns 8 a and 8 b that connect the dust guard 7 and the inner frame 4 are provided.

  The lamp 2 includes a lamp socket to which the lamp 9 is attached and a reflecting plate 10 that reflects light emitted from the lamp 9.

  The inner frame portion 4 has a substantially cylindrical shape, and an arm support portion 11b that fixes an arm shaft portion 11a disposed near the tip portion of the arm portion 3 with a screw or the like, and a groove-shaped rotation support that is connected to the outer periphery once. The receiving portion 12, a movable stopper mounting portion 200 to which the movable stopper 100 is mounted on the outer peripheral side of the substantially cylindrical shape and in the vicinity of the upper portion, and a column mounting portion 13 on the outer peripheral side on the opposite side of the movable stopper mounting portion 200 and in the vicinity of the upper portion. .

  The outer frame portion 5 has a substantially cylindrical shape, and a fixing stopper 14 that protrudes in a convex shape from the upper portion of the substantially cylindrical shape, a mounting spring mounting portion 15 to which the mounting spring 6 is mounted, and a screw or the like in the rotation support mounting hole. A rotation support portion 16 formed by insertion and a brim-shaped brim portion 17 projecting outward from the circumference from a substantially cylindrical lower portion are provided.

  The rotation support receiving portion 12 has a rotation support portion 16 such as a screw inserted from the outside of the outer frame portion 5 inserted therein, and the inner frame portion 4 can be rotated in the circumferential direction so as to be inside the outer frame portion 5. Attached to.

  The column portion 8 a includes a dust prevention mounting portion 18 attached to the dust prevention portion 7 and a movable stopper fixing portion 19 attached to the movable stopper attachment portion 200 of the inner frame portion 4. The dust prevention part 7 and the dust prevention attachment part 18 are attached by screws or welding, and the movable stopper attachment part 200 and the movable stopper fixing part 19 are attached by attachment screws 20.

  Next, the structure of the main part of the lighting fixture of this Embodiment is demonstrated using FIGS.

  The support column portion 8 b includes a dust prevention attachment portion 18 attached to the dust prevention portion 7 and an inner frame attachment portion 21 attached to the support attachment portion 13 of the inner frame portion 4. The dust prevention part 7 and the dust prevention attachment part 18 are attached by screws, welding, or the like, and the column attachment part 13 and the inner frame attachment part 21 are attached by screws or the like.

  3 is a partially enlarged view of a part of the luminaire shown in FIG. 1, FIG. 4 is a sectional view showing the AA cross section of the partially enlarged view shown in FIG. 3, and FIG. It is a disassembled perspective view of the elements on larger scale shown in FIG.

  The movable stopper 100 is formed in a flat plate shape, is attached to the movable stopper attaching portion 200 and slides, and a slide long hole portion 102 is formed in a long hole shape so that a screw is inserted into the slide portion 101. And a stopper piece 103 that protrudes in a substantially vertical direction with respect to the sliding direction at a substantially central position in the longitudinal direction of the slide portion 101.

  The movable stopper mounting portion 200 is formed by placing the slide portion 101 of the movable stopper 100 and forming a slide surface 201 having a plane substantially parallel to the direction in which the lamp rotates, and rising substantially vertically from the slide surface 201. When sliding the stopper 100, the slide portion contact portion 202 that contacts the longitudinal end of the slide portion 101 (the short portion of the slide portion), the slide direction guide portion 203 that guides the movable stopper to slide, and mounting A screw fixing portion 204 for fixing the screw 20 is provided.

  When the movable stopper 100 comes into contact with the slide portion contact portion 202, the stroke of the movable stopper 100 sliding is limited.

  The movable stopper fixing portion 19 includes two claw-like claw portions 22 and a screw insertion hole 23 into which a screw is inserted. The movable stopper fixing portion 19 is accommodated so that the stopper piece 103 of the movable stopper 100 protrudes between the two claw portions 22, and the mounting screw 20 connects the screw insertion hole 23 and the screw insertion hole 23 of the movable stopper 100. It penetrates and is fixed to the screw fixing portion 204 of the movable stopper mounting portion 200, and the movable stopper 100 is movably fixed to the movable stopper mounting portion 200.

  The movable stopper fixing portion 19 is formed by processing a metal plate or the like so as to be integrated with the column portion 8a.

  The sliding direction guide unit 203 guides the sliding direction of the movable stopper 100 so that the movable stopper 100 can slide smoothly when the movable stopper 100 slides.

  Next, the operation of the movable stopper will be described.

  First, a state in which the movable stopper 100 is brought into contact with one of the fixed stoppers 14 is a state before the lamp 2 is rotated (hereinafter referred to as a rotation angle 0 ° state), and this rotation angle 0 ° state is illustrated in FIG. This will be described with reference to FIG.

  FIG. 6 is a perspective view showing a state before the lamp according to the present embodiment is rotated, and FIG. 7 is a partially enlarged view of a part of FIG.

  When the rotation angle is 0 °, one side surface of the stopper piece 103 is in contact with the fixed stopper 14, and the slide portion 101 of the movable stopper 100 is in contact with one slide portion contact portion 202.

  At this time, the rotation direction of the lamp 2 (inner frame portion 4) is restricted to one direction because the slide portion 101 is in contact with the slide portion contact portion 202.

  The irradiation angle of the lamp 2 can be arbitrarily changed by the user with the arm support portion 11a and the arm shaft portion 11b as fulcrums, and the irradiation area irradiated by the lamp 9 is changed within a range in which the irradiation angle of the lamp 2 can be changed. It is in a state that can be done.

  When the user rotates the lamp 2 (inner frame part 4) while maintaining the irradiation angle of the lamp 2, the lamp 2 (inner frame part 4) is rotated in one direction, and the irradiation angle with respect to the floor surface direction is maintained. Thus, the irradiation area irradiated by the lamp 9 can be changed.

  Next, a state when the lamp 2 (inner frame portion 4) is rotated 360 ° (hereinafter referred to as a rotation angle 360 ° state) will be described with reference to FIGS.

  When the user rotates the lamp 2 (inner frame portion 4) from the state where the rotation angle is 0 °, it rotates while maintaining the irradiation angle with respect to the floor surface direction. When the lamp 2 (inner frame portion 4) is rotating, the stopper piece 103 is not in contact with the fixed stopper 14, so that the movable stopper 100 is not slid and is in contact with one slide portion contact portion 202. To maintain.

  At this time, the irradiation area of the lamp 9 irradiates a different irradiation area by the rotation angle of rotating the lamp 2 from the rotation angle 0 ° state, but the irradiation angle with respect to the floor surface direction is maintained.

  Further, when the lamp 2 (inner frame portion 4) is rotated, the irradiation area of the lamp 2 reaches a position almost close to the rotation angle 0 ° before the lamp 2 is rotated, and the other side surface of the stopper piece 103 is reached. The side comes into contact with the fixed stopper 14, and the stopper piece 103 is pushed by the fixed stopper 14 and begins to slide in the direction B shown in FIG. 8B, and the slide portion 101 gradually moves away from one slide portion contact portion 202. To go.

  As shown in FIG. 8C, the slide part 101 that has slid comes into contact with the other slide part contact part 202 and the slide part 101 stops sliding, and the lamp 2 (inner frame part 4) further rotates. become unable.

  At this time, since the lamp 2 (inner frame portion 4) rotates 360 °, the irradiation area of the lamp 9 is equal to the irradiation area when the rotation angle is 0 °.

  When the stroke amount that the slide part 101 slides is the sum of the width of the fixed stopper 14 and the width of the stopper piece 103, the rotation angle of the lamp 2 (inner frame part 4) may be set to 0 ° to 360 °. it can.

  Moreover, since the range in which the lamp 2 (inner frame portion 4) can be rotated is limited, the twist applied to the electric wire connected to the lamp 2 can be suppressed within a certain range, and the disconnection of the electric wire can be prevented.

  Further, since the lamp 2 (inner frame portion 4) can be rotated 360 °, a blind spot can be eliminated in the irradiation area of the lamp 9, and the user can select an arbitrary irradiation area.

  Further, since the slide portion 101 is attached to the slide surface 201 that is parallel to the rotation direction and substantially horizontal, the edge portion of the slide portion 101 is not caught on the slide surface 201, and therefore the frictional force can be reduced. The movable stopper 100 can be smoothly slid.

  In addition, when the user rotates the lamp 2 (inner frame part 4), a force acts on the lamp 2 and the inner frame part 4 in the direction perpendicular to the rotation direction. Since it is restrained by the portion 15, the movable stopper 100 is not affected.

  Therefore, when the user rotates the lamp 2 (inner frame portion 4), the frictional force generated when the movable stopper 100 slides does not change, and the movable stopper 100 can be smoothly slid.

  Thus, since the frictional force applied to the movable stopper 100 and the movable stopper mounting portion 200 does not change when the lamp 2 is rotated, the movable stopper 100 can be moved smoothly.

  Although the case where the lamp 2 is rotated 360 ° has been described in the present embodiment, the lamp 2 can be rotated to a rotation angle exceeding 360 ° by changing the stroke amount of the movable stopper 100. The rotation angle of 2 may be less than 360 °, and the stroke amount of the movable stopper 100 may be appropriately set depending on the intended use.

  Further, since the fixed stopper 14 is pushed from the side surface direction of the movable stopper 100 (stopper piece 103), the movable stopper 100 and the stopper piece 103 are hardly bent in the thickness direction.

  Therefore, the fixed stopper 14 does not get over the stopper piece 103 due to the bending of the movable stopper 100 and the stopper piece 103, and the contact force between the fixed stopper 14 and the stopper piece 103 can be increased. .

  The movable stopper 100 is housed in the movable stopper mounting portion 200 of the inner frame portion 4 and is fixed by the mounting screw 20 through the movable stopper fixing portion 19, but this screw penetrates the slide long hole portion 102. The movable stopper 100 can slide substantially linearly.

  In this embodiment, in order to suppress the number of parts, the case where the column portion 8a and the movable stopper fixing portion 19 are integrated has been described. However, the movable stopper fixing portion 19 is not necessarily integrated with the column portion 8a. In addition, the material is not limited to the metal plate, and may be formed of resin or the like.

  Further, in the present embodiment, a case has been described in which the stroke amount that the movable stopper 100 slides is regulated by the slide portion contact portion 202, but the claw portion 21 and the stopper piece 103 are not provided with the slide portion contact portion 202. The amount of stroke by which the movable stopper 100 slides may be regulated by bringing the claw portion 21 and the slide portion contact portion 202 into contact with the stopper piece 7 and the slide portion 101, respectively. You may regulate the stroke amount which 100 slides.

  In the present embodiment, the case where the inner frame portion 4 includes the movable stopper mounting portion 200 has been described. However, the outer frame portion 5 may include the movable stopper mounting portion 200 as shown in the cross-sectional view of FIG. Good.

  Further, since the movable stopper 100 and the fixed stopper 14 abut at a position above the inner frame part 4 or the outer frame part 5, the inner frame part is not affected by the diameters of the inner frame part 4 and the outer frame part 5. The spatial distance between 4 and the outer frame 5 can be set.

  Further, in the present embodiment, the case where the stopper piece 103 protrudes from the substantially central portion in the longitudinal direction of the slide portion 101 has been described. However, the position where the stopper piece 103 protrudes is substantially the central portion in the longitudinal direction of the slide portion 101. For example, as illustrated in FIG. 12A, the stopper piece 103 a may protrude from one end portion in the longitudinal direction of the slide portion 101.

  Further, if the direction in which the stopper piece 103 protrudes is substantially perpendicular to the direction in which the movable stopper 100 slides, the shape of the movable stopper 100 may not be substantially flat. For example, FIG. As shown in FIG. 4, the side surface shape of the stopper piece 103b may be substantially stepped.

  Further, in the present embodiment, the case where the shape of the stopper piece 103 of the movable stopper 100 is substantially rectangular has been described. However, as shown in FIG. In this case, the movable stopper 100 can move more smoothly after the stopper piece 103c comes into contact with the fixed stopper 14 by the rotation of the lamp 2 (inner frame portion 4).

  Further, in the present embodiment, a detailed description of the dust guard 7 is omitted, but a lighting device for lighting the lamp 9 or a power terminal block may be attached to the dust guard 7. The dust guard 7 may be provided separately without attaching a lighting device for lighting the lamp 9 or the like.

  Moreover, in this Embodiment, when fixing the lighting fixture 1 to the ceiling embedding hole of a ceiling, the attachment spring 6 and the collar part 16 pinch | interpose the ceiling ceiling material, and fix the lighting fixture 1 to a ceiling embedding hole. However, it may be fixed with an attachment structure similar to that of other prior art.

FIG. 3 is a perspective view showing the lighting apparatus in the first embodiment. 3 is an exploded perspective view showing the lighting apparatus in Embodiment 1. FIG. FIG. 3 is an enlarged perspective view in which a part of the lighting fixture in the first embodiment is enlarged. It is AA sectional drawing to which a part of lighting fixture in Embodiment 1 was expanded. FIG. 3 is an exploded perspective view in which a part of the lighting fixture according to Embodiment 1 is enlarged. It is a perspective view which shows the state before rotating the lamp of the lighting fixture in Embodiment 1. FIG. FIG. 6 is an enlarged perspective view showing a state before rotating the lamp of the lighting apparatus in the first embodiment. 6 is a side view showing the operation of the movable stopper of the lighting apparatus in Embodiment 1. FIG. It is a perspective view which shows the state after rotating the lamp of the lighting fixture in Embodiment 1. FIG. It is an expansion perspective view which shows the state after rotating the lamp of the lighting fixture in Embodiment 1. FIG. FIG. 5 is a cross-sectional view showing another inner frame portion and an outer frame portion in the first embodiment. FIG. 6 is a perspective view showing another movable stopper in the first embodiment. FIG. 5 is a top view showing another movable stopper in the first embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Lighting fixture, 2 lamp, 3 arm part, 4 inner frame part, 5 outer frame part, 6 attachment spring, 7 dust prevention part, 8a, 8b, 8c support | pillar part, 9 lamp, 10 reflector, 11a arm support part 11b Arm shaft portion, 12 Rotation support receiving portion, 13 Post attachment portion, 14 Fixed stopper, 15 Mounting spring attachment portion, 16 Rotation support portion, 17 Hook portion, 18 Dust prevention attachment portion, 19 Movable stopper fixing portion, 20 Mounting screw, 21 Inner frame mounting portion, 22 Claw portion, 23 Mounting screw insertion hole, 24 Prop mounting screw, 100 Movable stopper, 101 Slide portion, 102 Slide long hole portion, 103, 103a to 103c Stopper piece, 200 Movable stopper mounting Part, 201 slide surface, 202 slide part contact part, 203 slide direction guide part, 204 screw fixing part.

Claims (6)

A movable stopper,
An approximately cylindrical shape, an inner frame part to which a lamp is attached,
An outer frame portion that has a substantially cylindrical shape and is attached to the inner side of the substantially cylindrical shape so as to be rotatable in the direction of the peripheral frame portion;
A fixed stopper that is disposed on an upper side of the inner frame part or the outer frame part and restricts rotation of the inner frame part;
A movable stopper that slides in contact with the fixed stopper by rotation of the inner frame portion;
The movable stopper is attached, and a movable stopper mounting portion that determines a stroke amount that the movable stopper slides;
A lighting apparatus comprising:   The lighting device according to claim 1, wherein the movable stopper includes a stopper piece that contacts the fixed stopper, and a slide portion that is slidably attached to the movable stopper attachment portion.   The lighting device according to claim 1, wherein the movable stopper mounting portion has a slide surface that is substantially parallel to a rotation direction of the lamp.   The lighting device according to any one of claims 1 to 3, wherein the movable stopper mounting portion includes a sliding direction guide portion that guides a sliding direction of the movable stopper. The stroke amount that the movable stopper slides is
The length of the width dimension of the stopper piece in the rotation direction when the inner frame rotates,
The length of the width dimension of the fixed stopper in the rotation direction when the inner frame rotates,
The lighting fixture according to any one of claims 2 to 4, characterized in that the length is substantially the same as the length obtained by adding. A dust guard,
The dust prevention part and the inner frame part are connected, and the part connected to the inner frame part is a support part that is attached to the movable stopper mounting part so that the movable stopper part can slide,
The lighting fixture according to any one of claims 1 to 5, further comprising:

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