JP6692066B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting device including a lamp part and an arm part.

  A conventional lighting fixture, for example, a lighting fixture for a spotlight, includes a power supply box having a power supply circuit inside, an arm portion having one end attached to the power supply box, and the other end portion of the arm portion, and And a lamp unit having a light source (for example, Patent Document 1).

  In the luminaire disclosed in Patent Document 1, the connection part between the lamp part and the arm part and the connection part between the power supply box and the arm part are each adjustable in angle, and the irradiation direction of light from the lamp part is adjusted. It can be changed freely.

  The end portion of the arm portion on the side of the lamp portion has a cylindrical mounting shaft protruding in mutually opposite directions, and has a T-shape. On the other hand, a bearing portion into which the mounting shaft is fitted is formed in the lamp portion. The bearing portion has a cylindrical recess. The mounting shaft of the arm portion is fitted into the bearing portion. Then, a C-shaped leaf spring is attached so as to cover the attachment shaft from above. The mounting shaft is pressed against the bearing portion by the elastic force of the leaf spring. The leaf spring is provided with a screw for adjusting the elastic force of the leaf spring. The tightening degree of this screw is adjusted by a contractor or the like when the lighting fixture is installed. This adjusts the torque required to adjust the angle of the lamp part with respect to the arm part. As described above, in the lighting device disclosed in Patent Document 1, it is possible to realize a configuration in which the angle of the lamp part with respect to the arm can be adjusted and the angle can be maintained by rotating the mounting shaft with respect to the bearing part. I am trying.

JP, 2014-146503, A

  However, in the luminaire disclosed in Patent Document 1, wear of the contact portion between the mounting shaft and the bearing portion and the contact portion between the mounting shaft and the leaf spring is increased by repeating the adjustment of the angle of the lamp portion with respect to the arm portion. Occurs. If, for example, the diameter of the mounting shaft is reduced due to wear, the elastic force that presses the mounting shaft with the leaf spring is reduced as compared with the time of construction. Therefore, the frictional force between the mounting shaft and the bearing portion and the leaf spring is reduced. When the frictional force is reduced, the lamp unit may hang down from the arm due to gravity (so-called “neck sagging” state), that is, the lamp unit cannot be maintained at a desired angle with respect to the arm.

  Therefore, the present invention provides a lighting device including a lamp part and an arm part, which can suppress the occurrence of a state in which the lamp part cannot be maintained at a desired angle with respect to the arm part.

  In order to solve the above problems, one aspect of a lighting fixture according to the present invention has a holding base portion, a first end portion and a second end portion, and in the first end portion, a direction intersecting the longitudinal direction. Has a mounting shaft projecting to, an arm portion held by the holding base portion, a light source portion having a light emitting element, and an opening at the second end portion, and the light source portion is provided in the opening portion. A lamp part that is arranged and has a bearing part on which the mounting shaft is arranged, a retainer that presses the mounting shaft toward the bearing part, and is disposed between the mounting shaft and the bearing part or the retainer. And an abrasion resistant member.

  According to the present invention, it is possible to provide a lighting fixture including a lamp part and an arm part, which can suppress occurrence of a state in which the lamp part cannot be maintained at a desired angle with respect to the arm part.

FIG. 1 is a perspective view showing an appearance of a lighting fixture according to an embodiment. FIG. 2 is a perspective sectional view of a part of the lighting fixture according to the embodiment. FIG. 3 is an exploded perspective view of the main body of the lighting fixture, the arm, and the retainer according to the embodiment. FIG. 4 is a perspective view showing appearances of a main body, an arm, and a presser of the lighting fixture according to the embodiment. FIG. 5 is a cross-sectional view showing the configuration near the mounting axis of the lighting fixture according to the embodiment. FIG. 6 is a cross-sectional view showing a configuration near a mounting axis of a lighting fixture according to a comparative example. FIG. 7 is a perspective view showing the appearance of the wear resistant member according to the first modification of the embodiment. FIG. 8 is a perspective view showing a configuration in the vicinity of a mounting shaft of a lighting fixture including the wear resistant member according to the first modification of the embodiment. FIG. 9 is a perspective view showing the appearance of the wear resistant member according to the second modification of the embodiment. FIG. 10 is a perspective view showing a configuration in the vicinity of a mounting shaft of a lighting fixture including a wear resistant member according to Modification 2 of the embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that each of the embodiments described below shows a specific example of the present invention. Therefore, numerical values, shapes, materials, constituent elements, arrangement positions of constituent elements, connection forms, and the like shown in the following embodiments are merely examples and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, the constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as arbitrary constituent elements.

  It should be noted that each drawing is a schematic diagram and is not necessarily strictly illustrated. In addition, in each drawing, the same reference numerals are given to substantially the same configurations, and overlapping description will be omitted or simplified.

(Embodiment)
[1. overall structure]
First, the configuration of the lighting fixture according to the embodiment will be described with reference to the drawings.

  FIG. 1 is a perspective view showing the appearance of a lighting fixture 1 according to this embodiment.

  FIG. 2 is a perspective sectional view of the lamp part 5 and the arm part 70 of the lighting fixture 1 according to the present embodiment. FIG. 2 shows a perspective sectional view of the lighting fixture 1 in a cross section that passes through the optical axis J of the lighting fixture and is parallel to the yz plane.

  FIG. 3 is an exploded perspective view of the main body 20, the arm 70, and the retainer 80 of the lighting fixture 1 according to the present embodiment.

  FIG. 4 is a perspective view showing the outer appearance of the main body 20, the arm 70, and the retainer 80 of the lighting fixture 1 according to the present embodiment. 3 and 4 show the state in which the arm 70 is tilted in the optical axis J direction.

  In each drawing, a direction parallel to the optical axis J of the lighting fixture 1 is a z-axis direction, and two directions perpendicular to the optical axis J and orthogonal to each other are an x-axis direction and a y-axis direction. In the present embodiment, the y-axis direction is the vertical direction. In the present embodiment, the positive side in the z-axis direction is the front and the negative side in the z-axis direction is the rear.

  As shown in FIG. 1, the lighting fixture 1 is a spotlight and includes an arm portion 70, a lamp portion 5, and a holding base portion 90. Further, as shown in FIG. 2, the lighting device 1 further includes a light source unit 30 and a retainer 80. Further, as shown in FIGS. 3 and 4, the lighting device 1 further includes wear resistant members 25a and 25b.

  As shown in FIG. 2, the lamp unit 5 is a device that has an opening 120 and the light source unit 30 is arranged in the opening 120. As shown in FIG. 2, the lamp unit 5 includes a shade 10, a main body 20, a reflection member 40, an optical member 50, and a light control member 60. As shown in FIG. 3, the main body 20 of the lamp part 5 has bearing parts 242a and 242b on which the mounting shafts 78a and 78b of the arm part 70 are arranged, respectively.

  Hereinafter, each component of the lighting fixture 1 will be described.

[1-1. Arm]
The arm portion 70 has a first end portion 73 and a second end portion 74, and at the first end portion 73, mounting shafts 78 a and 78 b protruding in a direction intersecting the longitudinal direction, and a second end portion 74. In the above, it is a member held by the holding base 90. In the present embodiment, as shown in FIG. 3, the arm portion 70 has an arm portion main body 72 in addition to the first end portion 73 and the second end portion 74. In the present embodiment, the arm portion 70 includes, at the first end portion 73, columnar mounting shafts 78a and 78b extending in a direction substantially perpendicular to the optical axis J and the longitudinal direction of the arm portion 70. The mounting shafts 78a and 78b of the arm portion 70 are sandwiched between the retainer 80 and the bearing portions 242a and 242b of the main body 20, respectively, so that the arm portion 70 is rotatably attached to the main body 20.

  The second end 74 of the arm 70 is rotatably held by the holding base 90 with the longitudinal direction of the arm 70 as the axis of rotation. The axis of rotation is not limited to the longitudinal direction of the arm 70.

  As shown in FIG. 2, an insertion hole 76 is formed inside the arm portion 70 in the longitudinal direction of the arm portion 70. A lead wire 92 is inserted into the insertion hole 76, and electric power is supplied from the holding base 90 to the light source section 30 by the lead wire 92. In this way, since the lead wire 92 is not exposed to the outside, damage to the lead wire 92 is suppressed. Further, since the lead wire 92 cannot be seen from the outside of the lighting fixture 1, it is preferable in terms of design.

  The material forming the arm 70 is not particularly limited, but is formed of, for example, a metal material such as an aluminum alloy. In the present embodiment, the arm portion 70 is formed through, for example, an aluminum die casting process.

[1-2. Sed]
The shade 10 is a cylindrical member in which the light source unit 30 is arranged and which emits the light from the light source unit 30 to the outside. The shade 10 includes a side opening 130, as shown in FIG. The side opening 130 is a slit-shaped opening provided on the side surface of the shade 10, and the arm 70 is arranged therein.

  As shown in FIG. 2, in addition to the light source unit 30, the main body 20, the reflection member 40, the optical member 50, the light control member 60, and the like are arranged inside the shade 10.

  The material forming the shade 10 is not particularly limited, but is formed of, for example, a metal material such as an aluminum alloy. In the present embodiment, the shade 10 is formed using an aluminum alloy through an aluminum die casting process.

[1-3. Body]
As shown in FIG. 2, the main body 20 is a member arranged inside the shade 10 and to which the light source unit 30 and the arm unit 70 are attached. The main body 20 also functions as a heat sink that radiates the heat generated from the light source unit 30.

  As shown in FIG. 2, the main body 20 includes a mounting portion 210, an insertion hole 212, and a flange portion 230 on the front side (the positive side in the z-axis direction). The mounting part 210 is a part to which the light source part 30 is mounted. The mounting part 210 includes a flat surface for mounting the light source part 30. Thereby, the heat generated from the light source unit 30 is efficiently conducted to the main body 20. The lead wire 92 for supplying electric power to the light source unit 30 is inserted into the insertion hole 212. The inner diameter of the insertion hole 212 is substantially the same as the outer diameter of the lead wire 92. This suppresses light from leaking from the insertion hole 212 to the rear of the main body 20 (the negative side in the z-axis direction).

  The collar portion 230 is a portion for attaching the main body 20 to the shade 10. As shown in FIG. 3, the collar portion 230 is provided with a recess 232. The main body 20 is attached to the shade 10 by screwing a screw (not shown) into a screw hole (not shown) provided on the inner surface of the shade 10 via the recess 232.

  As shown in FIG. 3, the main body 20 includes a heat dissipation portion 240 on the rear side. The heat dissipation part 240 is a part for dissipating the heat generated from the light source part 30. The heat dissipation part 240 includes bearing parts 242a and 242b, trapezoidal parts 256a and 256b, and screw holes 252, 254a and 254b. The bearing portions 242a and 242b are portions that support the mounting shafts 78a and 78b of the arm portion 70, respectively. In this embodiment, the bearings 242a and 242b have a semi-cylindrical cross-section, which corresponds to the shape of the mounting shafts 78a and 78b of the arm 70.

  Further, as shown in FIG. 2, the main body 20 includes an insertion passage 246. The insertion passage 246 is a portion which penetrates the main body 20 and into which the lead wire 92 is inserted. In the present embodiment, the insertion passage 246 is a through hole formed in a direction (y-axis direction in the drawing) substantially perpendicular to the optical axis J of the light source unit 30 when viewed from the bearing portions 242a and 242b. The insertion passage 246 extends from the bearing portions 242a and 242b in a direction substantially perpendicular to the optical axis J, and the inner diameter of the insertion passage 246 is gradually increased in the optical axis J direction on the y axis direction negative side of the main body 20. There is. The opening 244 of the insertion path 246 on the arm 70 side is arranged at a position facing the first end 73 of the arm 70.

  The material forming the main body 20 is not particularly limited, but is formed of, for example, a metal material such as an aluminum alloy. In the present embodiment, main body 20 is formed using an aluminum alloy through an aluminum die casting process.

[1-4. Light source]
The light source unit 30 is a light source unit that has a light emitting element and emits light to be emitted from the lighting fixture 1. In the present embodiment, the light source unit 30 is a light emitting module having an LED (Light Emitting Diode) as a light emitting element, and is an LED light source that radially emits predetermined light. The light source unit 30 is configured to emit white light, for example. The light source unit 30 is composed of COB (Chip On Board) type LEDs, and includes a base, a plurality of LEDs that are bare chips (LED chips) mounted on the base, and seals the LEDs to form a phosphor. And a sealing member including.

  The light source section 30 is attached to the attachment section 210 of the main body 20. In the lighting fixture 1 shown in each drawing, the optical axis J of the light source unit 30 is the z-axis direction in each drawing.

  The base that constitutes the light source unit 30 is a mounting substrate for mounting a plurality of LEDs, and is, for example, a ceramic substrate, a resin substrate, or an insulating-coated metal base substrate. In addition, the base is, for example, a plate shape having a flat surface that is rectangular in plan view, and the bottom surface (negative side in the z-axis direction) of the base is attached and fixed to the attachment portion 210 of the main body 20. Although not shown, the base is formed with a pair of electrode terminals (a positive electrode terminal and a negative electrode terminal) for receiving DC power from the outside for causing the LED to emit light.

[1-5. Reflective member]
The reflection member 40 is a member that controls the light distribution of the light from the light source unit 30. In the present embodiment, the reflection member 40 reflects the light from the light source unit 30 toward the optical member 50. The reflecting member 40 has a tubular shape having an opening through which the optical axis J passes.

  As shown in FIG. 2, the inner diameter of the reflecting member 40 extends from the end on the side where the light from the light source unit 30 is incident (the negative side in the z-axis direction) to the end on the side where the light is emitted. It is configured to gradually increase. The light from the light source unit 30 is reflected on the inner surface of the reflecting member 40.

  The reflecting member 40 can be formed using a hard white resin material such as polybutylene terephthalate (PBT). A metal film such as aluminum may be provided on the inner surface of the reflecting member 40.

[1-6. Optical member]
The optical member 50 is a translucent member having a light incident surface on which the light from the reflecting member 40 is incident and a light emitting surface on which the light incident on the light incident surface is emitted. The optical member 50 may have a function of controlling and outputting the light distribution of the light incident from the reflecting member 40. In the present embodiment, the optical member 50 is a Fresnel lens. Accordingly, the lighting fixture 1 can collect the emitted light and form a spot-shaped illumination area.

  The optical member 50 is formed of a translucent material, and can be formed of a transparent resin material such as acrylic or polycarbonate (PC), or a transparent material such as a glass material.

[1-7. Light control member]
As shown in FIG. 2, the light control member 60 is a tubular member that is arranged inside the shade 10 and on the light emitting surface side of the optical member 50.

  The light control member 60 is arranged around the optical axis J. Further, as shown in FIG. 2, the outer diameter of the light control member 60 is substantially equal to the inner diameter of the shade 10 on the opening 120 side. As a result, it is possible to prevent the light control member 60 from reducing the outgoing light passage region of the opening 120 of the shade 10. In addition, it is possible to suppress the leakage of emitted light from between the shade 10 and the light control member 60.

  The light control member 60 covers a part of the inner surface of the shade 10 from the vicinity of the light emitting surface of the optical member 50 to the vicinity of the z-axis direction positive side end portion of the shade 10. Here, the inner surface (the surface on the optical axis J side) of the light control member 60 is a black glare suppressing surface. As described above, the vicinity of the z-axis direction positive side end of the opening 120 of the shade 10 is covered with the inner surface of the light control member 60, which is a black glare suppressing surface. As a result, glare in the vicinity of the positive end of the opening of the shade 10 is suppressed.

  The inner surface of the light control member 60 is not particularly limited as long as it is a black glare suppressing surface. The black glare suppressing surface can be realized, for example, by applying a matte treatment to the black-painted surface. Further, the black glare suppressing surface can also be realized by subjecting the surface painted in black or the surface made of a black member to embossing. Furthermore, in order to further suppress glare on the inner surface of the light control member 60, a stepped portion may be provided on the inner surface of the light control member 60.

  The light control member 60 can be formed using, for example, a resin material such as PBT or PC.

[1-8. Presser foot]
The retainer 80 is a member that retains the mounting shafts 78a and 78b of the arm 70 toward the bearings 242a and 242b of the main body 20, respectively. In the present embodiment, the retainer 80 is an elastic member for rotatably attaching the attachment shafts 78a and 78b to the bearing portions 242a and 242b, respectively. The retainer 80 is a leaf spring having a substantially C-shaped shape as shown in FIG. 3, and together with the bearing portions 242a and 242b, the attachment shafts 78a and 78b of the arm portion 70 are sandwiched therebetween, and the screw 86a, It is fixed to the main body 20 by 86b and 88. Thereby, the arm 70 is attached to the main body 20. More specifically, the screws 86a, 86b and 88 are screwed into the screw holes 254a, 254b and 252 of the main body 20 via the through holes 84a, 84b and 82 of the presser 80, respectively. A spring washer may be arranged between the screw 88 and the retainer 80. This prevents the screw 88 from loosening.

  Since the mounting shafts 78a and 78b of the arm portion 70 are sandwiched between the presser 80 and the main body 20, the arm portion 70 is rotatable with respect to the main body 20 about the mounting shafts 78a and 78b.

  Further, as described above, when the retainer 80 is an elastic member and is fixed to the lamp part 5 with the screws 86a, 86b and 88, the torque required to rotate the lamp part 5 with respect to the arm 70 is: It can be adjusted by adjusting the screwing amount of the screw 88. In the present embodiment, as will be described later, the phenomenon that the lamp part 5 cannot be maintained at a desired angle with respect to the arm part 70 is suppressed, so that if the screwing amount of the screw 88 is appropriately adjusted during construction. The need to readjust the screw-in amount of the screw 88 after construction is reduced. Therefore, the screw 88 does not have to be arranged in a position that can be adjusted by a driver from the side opening 130 of the shade 10 in the assembled state of the lighting device 1. Thereby, the degree of freedom in the shape of the side opening 130 of the shade 10 is improved.

  The material forming presser foot 80 is not particularly limited. In the present embodiment, the retainer 80 is made of stainless steel.

[1-9. Wear-resistant member]
The wear resistant members 25a and 25b are arranged between the mounting shafts 78a and 78b and the bearing portions 242a and 242b or the retainer 80, and are attached to the mounting shafts 78a and 78b, the bearing portions 242a and 242b, and the retainer 80. It is a member that suppresses wear of at least one of the members. In the present embodiment, the wear resistant members 25a and 25b are sheet-shaped members having a cylindrical shape. With this configuration, the wear resistant members 25a and 25b having a desired thickness can be easily manufactured. That is, it is easy to control the thickness of the wear resistant members 25a and 25b.

  The inner diameters of the wear resistant members 25a and 25b are substantially equal to the outer diameters of the mounting shafts 78a and 78b, respectively, and the wear resistant members 25a and 25b are mounted on the outer circumferences of the mounting shafts 78a and 78b, respectively. That is, the mounting shafts 78a and 78b are inserted into the wear resistant members 25a and 25b, respectively. As shown in FIG. 4, the mounting shafts 78a and 78b are arranged in the bearing portions 242a and 242b with the wear-resistant members 25a and 25b attached, respectively, and are attached to the bearing portions 242a and 242b by the retainer 80. It is held down. That is, the mounting shafts 78a and 78b are sandwiched between the bearing portions 242a and 242b and the retainer 80 with the wear resistant members 25a and 25b attached thereto.

  As a result, wear of at least one of the mounting shafts 78a and 78b, the bearing portions 242a and 242b, and the holding member 80 is suppressed. Therefore, since the elastic force that presses the mounting shafts 78a and 78b is suppressed by the pressing member 80, it is possible to suppress the decrease in the frictional force between the mounting shafts 78a and 78b and the bearing portions 242a and 242b and the pressing member 80.

  The material forming the wear resistant members 25a and 25b is not particularly limited as long as it is a material that can suppress the wear of at least one of the mounting shafts 78a and 78b, the bearing portions 242a and 242b, and the pressing member 80 member. As a material forming the wear resistant members 25a and 25b, for example, a material having a small friction coefficient between the mounting shafts 78a and 78b, the bearing portions 242a and 242b, and at least one of the pressing member 80 members can be used. .. When the mounting shafts 78a and 78b, the bearings 242a and 242b, and the retainer 80 are all made of a metal material, a crystalline resin such as nylon is used as a material for forming the wear resistant members 25a and 25b. be able to. As a result, it is possible to reliably suppress wear of at least one of the mounting shafts 78a and 78b, the bearing portions 242a and 242b, and the pressing member 80 member.

[1-10. Holding table]
The holding base 90 is a member that holds the arm 70. In the present embodiment, the holding base 90 holds the arm 70 rotatably. Further, in the present embodiment, the holding base section 90 includes a power supply section (not shown) that supplies electric power to the light source section 30. Thereby, the lamp part 5, the arm part 70, and the power supply part can be integrated. The power supply unit built in the holding base 90 converts AC power supplied from outside the holding base 90 into DC power, and supplies the DC power to the light source unit 30 via the lead wire 92.

  The outer wall portion of the holding base 90 is formed of a metal material, a resin material, or the like. In the present embodiment, for example, the outer wall portion is made of aluminum.

[2. Wear suppression configuration]
Next, a configuration that suppresses wear of the mounting shafts 78a and 78b, the bearing portions 242a and 242b, and the holding member 80 in the lighting fixture 1 according to the present embodiment will be described in detail with reference to the drawings.

  FIG. 5 is a cross-sectional view showing the configuration near the mounting shaft 78a of the lighting fixture 1 according to the present embodiment. In FIG. 5, a part of the VV cross section shown in FIG. 4 is shown.

  As shown in FIG. 5, in the luminaire 1 according to the present embodiment, the wear resistant member 25a is arranged between the mounting shaft 78a and the retainer 80 and the bearing portion 242a. As a result, direct contact between the mounting shaft 78a and the retainer 80 or the bearing portion 242a is suppressed. The wear caused by the friction between the mounting shaft 78a and the wear resistant member 25a is sufficiently smaller than the wear caused by the friction between the mounting shaft 78a and the bearing portion 242a. Similarly, the wear caused by the bearing portion 242a and the presser 80 and the wear resistant member 25a rubbing against each other is sufficiently small. Therefore, in the lighting fixture 1, it is possible to suppress the wear of the mounting shaft 78a, the retainer 80, and the bearing portion 242a that accompany repeated adjustment of the angle of the lamp portion 5 with respect to the arm portion 70. Although the mounting shaft 78a and the bearing portion 242a have been described above, the same applies to the mounting shaft 78b and the bearing portion 242b.

  Here, in order to describe the effect of the lighting fixture 1 according to the present embodiment, a lighting fixture according to a comparative example will be described with reference to the drawings. The lighting fixture according to the comparative example is different from the lighting fixture 1 in that it is not provided with the wear resistant members 25a and 25b, and is the same as the lighting fixture 1 in other points.

  FIG. 6 is a cross-sectional view showing the configuration near the mounting shaft 78a of the lighting fixture 102 according to the comparative example. In FIG. 6, a part of the cross section of the lighting fixture 102 similar to FIG. 5 is shown.

  As shown in FIG. 6, in the lighting fixture 102 according to the comparative example, the mounting shaft 78a, the bearing portion 242a, and the retainer 80 are in direct contact with each other. Therefore, by repeating the adjustment of the angle of the lamp part 5 with respect to the arm part 70, at least one of the mounting shaft 78a, the bearing part 242a, and the retainer 80 is worn. Due to the wear, for example, the diameter of the mounting shaft 78a is reduced, so that the elastic force of pressing the mounting shaft 78a by the retainer 80 is reduced as compared with that at the time of construction. Therefore, the frictional force between the mounting shaft 78a and the bearing portion 242a and the retainer 80 is reduced. When the frictional force is reduced, the lamp unit may hang down from the arm due to gravity, that is, the lamp unit may not be maintained at a desired angle with respect to the arm.

  Further, when the mounting shaft 78a and the bearing portion 242a are formed of the same material (aluminum alloy) as in the luminaire 1 according to the present embodiment (that is, in the case of a so-called "togane" combination), The wear caused by the rubbing of these due to the action of the atomic force is particularly large. Therefore, like the lighting device 1 according to the present embodiment, the effect of suppressing wear achieved by disposing the wear resistant member 25a becomes particularly remarkable.

  Further, in the present embodiment, the presser foot 80 is made of a material different from that of the mounting shafts 78a and 78b. Specifically, the retainer 80 is made of stainless steel, and the mounting shafts 78a and 78b are made of an aluminum alloy. In this case, since it is not a combination of the above "toggle", even when the retainer 80 and the mounting shafts 78a and 78b rub against each other, the wear can be relatively suppressed.

[3. Summary]
As described above, the lighting fixture 1 according to the present embodiment has the holding base 90, the first end 73 and the second end 74, and the first end 73 has a direction intersecting the longitudinal direction. It has mounting shafts 78a and 78b projecting to the second end, and at the second end portion 74, an arm portion 70 held by a holding base portion 90. The lighting fixture 1 has a light source section 30 having a light emitting element, an opening 120, the light source section 30 is arranged in the opening 120, and bearing sections 242a and 242b in which mounting shafts 78a and 78b are arranged, respectively. The lighting unit 5 is further provided. The luminaire 1 includes a retainer 80 that retains the attachment shafts 78a and 78b toward the bearings 242a and 242b, and a resistance member that is disposed between the attachment shafts 78a and 78b and the bearings 242a and 242b or the retainer 80. Wearing members 25a and 25b are further provided.

  As a result, direct contact between the attachment shafts 78a and 78b and the retainer 80 is suppressed. Further, direct contact between the mounting shafts 78a and 78b and the bearing portions 242a and 242b is suppressed. Further, the wear caused by the friction between the mounting shafts 78a and 78b and the wear resistant members 25a and 25b is sufficiently smaller than the wear caused by the friction between the mounting shafts 78a and 78b and the bearing portions 242a and 242b. Similarly, the wear caused by the friction between the bearing portions 242a and 242b and the retainer 80 and the wear resistant members 25a and 25b is sufficiently small. Therefore, in the lighting fixture 1, it is possible to suppress the wear of the mounting shafts 78a and 78b, the retainer 80, and the bearing portions 242a and 242b due to the repeated angle adjustment of the lamp portion 5 with respect to the arm portion 70. Therefore, it is possible to suppress the occurrence of the phenomenon that the lamp part 5 cannot be maintained at a desired angle with respect to the arm part 70. Therefore, the necessity of adjusting the torque for rotating the lamp unit 5 with respect to the arm 70 and the screw 88 for adjusting after the installation is reduced. Therefore, the screw 88 need not be configured to be adjustable from outside the lighting fixture 1. This improves the degree of freedom in the shape of the side opening 130 of the shade 10 of the lighting fixture 1.

  Further, in the lighting device 1 according to the present embodiment, the mounting shafts 78a and 78b and the bearing portions 242a and 242b may be made of the same material.

  In this case, since the mounting shafts 78a and 78b and the bearing portions 242a and 242b respectively form a so-called "toggle" combination, the wear suppressing effect due to the wear resistant members 25a and 25b becomes particularly remarkable.

  Further, in the lighting device 1 according to the present embodiment, the wear resistant members 25a and 25b may be sheet-shaped members.

  With this configuration, the wear resistant members 25a and 25b having a desired thickness can be easily manufactured. That is, it is easy to control the thickness of the wear resistant members 25a and 25b.

  In addition, in lighting device 1 according to the present embodiment, wear-resistant members 25a and 25b may be crystalline resin.

  As a result, it is possible to reliably suppress wear of at least one of the mounting shafts 78a and 78b, the bearing portions 242a and 242b, and the pressing member 80 member.

  Further, in the lighting device 1 according to the present embodiment, the presser tool 80 may be made of a material different from that of the mounting shafts 78a and 78b.

  In this case, since the presser tool 80 and the mounting shafts 78a and 78b do not form a so-called "toggle" combination, even when the presser tool 80 and the mounting shafts 78a and 78b rub against each other, wear can be relatively suppressed.

  Further, in the lighting device 1 according to the present embodiment, the holding fixture 80 is an elastic member, and may be fixed to the lamp portion 5 with the screw 88.

  Accordingly, the torque required to rotate the lamp unit 5 with respect to the arm 70 can be adjusted by adjusting the screwing amount of the screw 88.

  In addition, the lighting fixture 1 according to the present embodiment may further include a power supply unit 60 that supplies electric power to the light source unit 50, inside the holding base 90.

  Thereby, the lamp part 5, the arm part 70, and the power supply part can be integrated.

(Modifications, etc.)
Although the luminaire 1 according to the present invention has been described above based on the embodiments, the present invention is not limited to these embodiments.

  For example, the shape of the wear resistant member is not limited to the cylindrical shape. Hereinafter, modified examples of the shape of the wear resistant member will be described with reference to the drawings.

  First, a wear-resistant member according to the first modification of the embodiment and a lighting fixture including the same will be described.

  FIG. 7 is a perspective view showing the appearance of the wear resistant member 25c according to the present modification.

  FIG. 8 is a perspective view showing a configuration near a mounting shaft 78a of a lighting fixture 1a including a wear resistant member 25c according to the present modification. Note that, in FIG. 8, in order to clearly show the arrangement of the wear resistant member 25c, the external appearance of the lighting fixture 1a with the shade 10 and the retainer 80 removed is shown. The lighting fixture 1a according to the present modification example is different from the lighting fixture 1 in that it has a wear resistant member 25c in place of the wear resistant members 25a and 25b of the lighting fixture 1 according to the embodiment, and is the same in other respects. To do.

  As shown in FIG. 7, the wear resistant member 25c according to the present modification includes a semi-cylindrical semi-cylindrical portion 125 and a flat plate-shaped flat plate portion 126 arranged at an end of the semi-cylindrical portion 125. As shown in FIG. 8, the wear resistant member 25c according to the present modification is arranged between the mounting shaft 78a and the bearing portion 242a, and is not arranged between the mounting shaft 78a and the pressing member 80. Even in such a configuration, in the lighting fixture 1a, it is possible to suppress the wear of the mounting shaft 78a and the bearing portion 242a that accompanies repeated adjustment of the angle of the lamp portion 5 with respect to the arm portion 70. Therefore, it is possible to suppress the occurrence of the phenomenon that the lamp part 5 cannot be maintained at a desired angle with respect to the arm part 70.

  Further, in the present modification, the flat plate portion 126 of the wear resistant member 25c is sandwiched between the trapezoidal portion 256a and the holding tool 80 (not shown in FIG. 8). Thereby, when adjusting the angle of the lamp part 5 with respect to the arm part 70, it is possible to suppress the movement of the position of the wear resistant member 25c. Therefore, the wear resistant member 25c can reliably suppress wear of the mounting shaft 78a and the bearing portion 242a.

  Although the mounting shaft 78a and the bearing portion 242a have been described above, the same applies to the mounting shaft 78b and the bearing portion 242b.

  Next, a wear resistant member according to the second modification of the embodiment and a lighting fixture including the same will be described.

  FIG. 9 is a perspective view showing the outer appearance of the wear resistant member 25d according to the present modification.

  FIG. 10 is a perspective view showing a configuration near a mounting shaft 78a of a lighting fixture 1b including a wear resistant member 25d according to the present modification. Note that, in FIG. 10, as in FIG. 8, the external appearance of the lighting fixture 1b in a state in which the shade 10 and the retainer 80 are removed is shown. The lighting fixture 1b according to the present modification example is different from the lighting fixture 1 in that a wear-resistant member 25d is provided instead of the wear-resistant members 25a and 25b of the lighting fixture 1 according to the embodiment, and is the same in other respects. To do.

  As shown in FIG. 9, the wear resistant member 25d according to the present modification includes a C-shaped portion 127 having a substantially C-shaped cross section, and a flat plate-shaped flat portion 128 arranged in the center of the C-shaped portion 127. Equipped with. Further, the flat plate portion 128 is formed with a through hole 129 into which the screw 86a is inserted. As shown in FIG. 10, the wear-resistant member 25d according to the present modified example has a space between the mounting shaft 78a and the bearing portion 242a, and a space between the mounting shaft 78a and the pressing member 80 (not shown in FIG. 10). Will be placed. With such a configuration, in the lighting fixture 1b, it is possible to suppress wear of the mounting shaft 78a, the bearing portion 242a, and the retainer 80 due to repeated adjustment of the angle of the lamp portion 5 with respect to the arm portion 70. Therefore, it is possible to prevent the phenomenon in which the lamp unit 5 cannot be maintained at a desired angle with respect to the arm 70.

  Further, in the present modification, the flat plate portion 128 of the wear resistant member 25c is sandwiched between the trapezoidal portion 256a and the holding tool 80. Further, the screw 86a is fixed while penetrating the through hole 129 of the wear resistant member 25d. Thereby, when adjusting the angle of the lamp part 5 with respect to the arm part 70, it is possible to reliably suppress the movement of the position of the wear resistant member 25d. Therefore, wear of the mounting shaft 78a, the bearing portion 242a, and the retainer 80 can be reliably suppressed by the wear resistant member 25d.

  Although the mounting shaft 78a and the bearing portion 242a have been described above, the same applies to the mounting shaft 78b and the bearing portion 242b.

  In the above, the wear-resistant member has been described as having a sheet-like shape. However, the wear-resistant member covers at least one surface of the mounting shafts 78a and 78b, the bearing portions 242a and 242b, and the holding member 80. May be covered.

  In this configuration, for example, the wear resistant member can be easily formed by applying a wear resistant resin or the like.

  Further, in the above-described embodiment and each modified example, an example in which the mounting shafts 78a and 78b and the bearing portions 242a and 242b are formed of an aluminum alloy and the pressing tool 80 is formed of stainless steel has been shown. The material is not particularly limited. The material forming the wear resistant members 25a and 25b can be appropriately selected according to the material forming each of the mounting shafts 78a and 78b, the bearing portions 242a and 242b, and the retainer 80.

  Further, in the above-described embodiment and each modified example, the pressing tool 80 is fixed by the screws 86a, 86b and 88, but the pressing tool 80 may be fixed by a member other than the screw. Since the need for readjustment (that is, retightening of the screw 88) of the presser foot 80 after construction is reduced with the use of the wear resistant member, for example, the presser foot 80 can be made of a member other than the screw such as a rivet. You may fix it.

  Further, in the above embodiment, the optical member 50 is the Fresnel lens, but the optical member 50 is not limited to this. The optical member 50 may be, for example, a hybrid lens or a dome lens.

  Further, in the above embodiment, the COB type LED is used in the light source unit 30, but other light emitting elements may be used. For example, an SMD (Surface Mount Device) type LED may be used. Moreover, you may use other solid light emitting elements, such as an organic EL (Electro Luminescence) element, or a light source other than a solid light emitting element.

  In addition, it is realized by making various modifications to those skilled in the art by those skilled in the art, or by arbitrarily combining the components and functions in each embodiment without departing from the spirit of the present invention. The present invention also includes the forms.

1, 1a, 1b Lighting fixture 5 Lamp part 25a, 25b, 25c, 25d Abrasion resistant member 30 Light source part 70 Arm part 73 First end part 74 Second end part 78a, 78b Mounting shaft 80 Presser foot 86a, 86b, 88 Screw 90 holding base 120 opening 242a, 242b bearing

Claims (7)

A holding table part,
It has a first end portion and a second end portion, and has a mounting shaft projecting in a direction intersecting the longitudinal direction at the first end portion, and is held by the holding base portion at the second end portion. Arm part,
A light source section having a light emitting element,
A lamp section having an opening, the light source section being arranged in the opening, and a bearing section having the mounting shaft arranged therein,
A retainer for pressing the mounting shaft toward the bearing portion,
A wear-resistant member disposed between the mounting shaft and the bearing portion or the retainer ,
The wear-resistant member includes a C-shaped portion having a C-shaped cross section, and a flat-plate-shaped flat plate portion arranged in the center of the C-shaped portion
A luminaire in which a through hole is formed in the flat plate portion . The lighting device according to claim 1, wherein the mounting shaft and the bearing portion are formed of the same material. The lighting device according to claim 1, wherein the wear-resistant member is a sheet-shaped member. The wear-resistant member, the lighting device according to any one of claim 1 3 which is a crystalline resin. The retainer is, light fixture according to any one of claims 1 to 4 and the mounting shaft is a different material. The retainer is resilient member, the lighting device according to any one of claim 1 5 which is fixed by screws to the lamp unit. Wherein the holder portion, the lighting device according to any one of claim 1 6, further comprising a power supply unit for supplying electric power to the light source unit.

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