Lighting apparatus

Abstract

To provide a small-sized lighting fixture in which a lamp body can be rotated around a parallel axis and an orthogonal axis with respect to a fixture body.SOLUTION: The lighting fixture 1 includes a lighting fixture body 10 including a light source part 11, a fixture body 20, and a support member 40 rotatably supporting the lighting fixture body 10 around a parallel axis and an orthogonal axis with respect to the fixture body 20, the fixture body 20 includes a frame body 21 having an opening 23 for irradiating light from the light source part 11, the frame body 21 includes a rotation guide part 24, and the support member 40 includes a notch part 44, and the notch part 44 is fitted to the rotation guide part 24 to rotatably support the lighting fixture body 10 around the orthogonal axis with respect to the fixture body 20.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to lighting fixture technology. [Background technology]

[0002] Conventionally, lighting fixtures have been known that include a lighting fixture body with a light source unit and a fixture body in which the lighting fixture body is housed, and in which the lighting fixture body is configured to be rotatable relative to the fixture body around parallel and orthogonal axes.

[0003] Patent document 1 also describes a lighting fixture that includes a cylindrical housing with a bottom (fixture body), an arm member having an arm body attached to the bottom of the housing around a vertical rotation axis and a pair of arm portions extending from both ends of the arm body toward the opening of the housing, and a lamp body (lamp body) that is pivotally supported between the tips of the pair of arm portions and has a horizontal rotation axis (see Patent document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-174785 Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, there has been a demand for compact lighting fixtures, and similarly, for lighting fixtures in which the lamp body is rotatable relative to the fixture body around parallel and perpendicular axes. However, in the lighting fixture described in Patent Document 1, the mechanism (arm member) for rotatable relative to the fixture body around parallel and perpendicular axes, the arm body is attached to the bottom of the housing around a vertical rotation axis, and a pair of arms extend from both ends of the arm body toward the opening of the housing, surrounding the upper and lateral sides of the lamp body. The arm body must have a sufficient length, especially in the vertical direction, to prevent contact between the lamp body and the housing when the lamp body rotates around the horizontal axis. In addition, a rotation mechanism for rotating the arm body around the vertical rotation axis must be provided on the bottom of the housing, which requires the height of the housing to be increased. The configuration described in Patent Document 1 may make it difficult to compact the lighting fixture.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and its object is to provide a lighting fixture that can be configured to be compact, even if the lighting fixture body is configured to be rotatable relative to the fixture body around parallel axes and orthogonal axes. [Means for solving the problem]

[0007] The problem to be solved by the present invention is as described above, and the means for solving this problem will now be described.

[0008] In other words, the lighting fixture disclosed in the present application is a lighting fixture to be attached to a mounting surface, and comprises a lighting fixture body having a light source unit, a fixture body in which the light source unit is housed, and a support member that supports the lighting fixture body rotatably relative to the fixture body around a parallel axis parallel to the mounting surface and an orthogonal axis perpendicular to the mounting surface, the fixture body having a frame body with an opening through which light from the light source unit is irradiated, the frame body having a rotation guide unit, and the support member having a cutout portion that is engaged with the rotation guide portion, thereby supporting the lighting fixture body rotatably relative to the fixture body around the orthogonal axis.

[0009] The lighting fixture disclosed in the present application can have the following configurations based on the above configuration. In the lighting fixture disclosed in the present application, it is preferable that the support member is provided with a rotating support shaft that supports the lamp body so that it can rotate relative to the fixture body around a parallel axis, and that when the lamp body rotates relative to the fixture body around an orthogonal axis, the rotating support shaft rotates together with the lamp body.

[0010] In the lighting fixture disclosed in the present application, the support member is preferably configured in a flat plate shape.

[0011] In the lighting fixture disclosed in the present application, the fixture body preferably includes a rotation restricting portion that restricts the movement of the support member that rotates relative to the fixture body about an orthogonal axis.

[0012] In the lighting fixture disclosed in the present application, it is preferable that the support member is provided with an abutment portion that protrudes so that the rotation regulating portion is positioned on the rotation trajectory of the abutment portion when the lighting fixture body rotates relative to the fixture body around the orthogonal axis, and that the rotation regulating portion regulates the movement of the support member rotating relative to the fixture body around the orthogonal axis by abutting the abutment portion.

[0013] In the lighting fixture disclosed in the present application, it is preferable that at least two of the support members are provided, and that the at least two support members are configured to have the same shape. [Effects of the Invention]

[0014] The present invention has the following advantages: That is, according to the present invention, even if the lighting fixture body is provided with a mechanism that allows it to rotate relative to the fixture body around a parallel axis and an orthogonal axis, it can be configured to be compact. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a plan view showing the overall configuration of a lighting fixture according to an embodiment of the present invention; [Figure 2] 2 is a cross-sectional view of the lighting fixture taken along line AA in FIG. 1, and is a side view showing the lighting fixture attached to the mounting surface. FIG. [Figure 3] FIG. 4 is a side view showing the lighting fixture body, the fixture body frame, the mounting spring, and the support member of the lighting fixture. [Figure 4] FIG. [Figure 5] FIG. 2 is a cross-sectional view of the lighting fixture taken along line BB in FIG. [Figure 6] FIG. [Figure 7] FIG. 2 is a bottom view showing the lamps and lamp arrangement portion of the lamp body of the lighting fixture. [Figure 8] Similarly, in a lighting fixture, (A) is a schematic bottom view showing the state in which the lamp body rotates relative to the fixture body around an orthogonal axis, (B) is a schematic bottom view and side view showing the state in which the abutting portion abuts against the rotation restriction portion, (C) is a schematic bottom view showing the state in which the lamp body rotates relative to the fixture body around an orthogonal axis, and (D) is a schematic bottom view and side view showing the state in which the abutting portion abuts against the rotation restriction portion. DETAILED DESCRIPTION OF THE INVENTION

[0016] A lighting fixture 1 according to one embodiment of the present invention will be described with reference to FIGS. 1 to 8. As shown in FIG. 2, the lighting fixture 1 according to this embodiment is mounted by being embedded in a recessed hole H formed in a mounting surface C, such as a ceiling surface (including an inclined surface). In the following description, the side of the lighting fixture 1 that emits light is referred to as the illumination surface side of the lighting fixture 1, and the side that is inserted into the recessed hole H formed in the mounting surface C is referred to as the mounting surface side (opposite to the illumination surface side) of the lighting fixture 1. The mounting surface side of the lighting fixture 1 is the rear side (back side) of the lighting fixture 1. When the lighting fixture 1 is mounted on a mounting surface such as a ceiling surface, if the direction perpendicular to the mounting surface is defined as the up-down direction of the lighting fixture 1, the mounting surface side of the lighting fixture 1 will be referred to as the upside, and the direction toward the illumination surface side of the lighting fixture 1 will be referred to as the downside. The direction perpendicular to the up-down direction of the lighting fixture 1 will be referred to as the side of the lighting fixture 1. In the following description, the lighting fixture 1 viewed from above will be referred to as a plan view, and the lighting fixture 1 viewed from below will be referred to as a bottom view. A side view is a view of the lighting fixture 1, etc., viewed from a direction perpendicular to the vertical direction. A cross-sectional view is a view of the cross-sectional shape of the lighting fixture 1. Line α in Fig. 4 or 5 indicates a parallel axis parallel to the mounting surface, and is an imaginary line passing through the center of the rotation support shaft 41 of the support member 40 of the lighting fixture 1. Line β in Fig. 4 or 5 indicates an orthogonal axis perpendicular to the mounting surface, and is an imaginary line passing through the center of the lighting fixture 1.

[0017] The following describes the lighting fixture 1 shown in Figures 1 to 7. The lighting fixture 1 has an approximately cylindrical outer shape. Note that the outer shape of the lighting fixture 1 is not limited to that of the present embodiment, and other than an approximately cylindrical shape, it can also be, for example, an elliptical, square, rectangular, polygonal, or sector shape in plan view, or a combination of these shapes.

[0018] As shown in Figures 1 to 5, the lighting fixture 1 comprises a lighting fixture body 10, a fixture body 20, multiple (two in this embodiment) mounting springs 30, a power supply unit 35, and multiple (two in this embodiment) support members 40.

[0019] The lighting fixture body 10 includes a light source section 11 , a light source mounting section 12 , a heat dissipation section 13 , an electric wire 14 , and a plate member 15 .

[0020] The light source unit 11 of the lamp body 10 is configured, for example, as a light-emitting module in which LED elements are arranged on one surface of a substrate, and the lower side of the lamp body 10 is configured as the light irradiation surface side. In this embodiment, the light source unit 11 is configured using COB (chip on board) LED elements. The light source arrangement unit 12 is configured to be approximately hemispherical. A approximately cylindrical recess is formed on the lower side of the light source arrangement unit 12. The light source unit 11 is arranged at the bottom of the recess of the light source arrangement unit 12. The bottom of the recess of the light source arrangement unit 12 is formed as a flat surface to ensure a sufficient contact area with the substrate of the light source unit 11. Light emitted from the light source unit 11 is irradiated toward the reflector 25 (described later) through the opening of the recess. The heat dissipation unit 13 is arranged above the light source arrangement unit 12 and is configured integrally with the light source arrangement unit 12 in this embodiment. The heat dissipation unit 13 dissipates heat generated when the light source unit 11 emits light. Specifically, a portion of the heat generated from the light source unit 11 is transferred to the light source mounting unit 12. A portion of the heat transferred to the light source mounting unit 12 is transferred to the heat dissipation unit 13. When the ambient air temperature is lower than the surface temperatures of the light source mounting unit 12 and the heat dissipation unit 13, the heat transferred to the light source mounting unit 12 and the heat dissipation unit 13 is dissipated into the ambient air. The heat dissipation unit 13 of this embodiment is configured with multiple fins to increase the surface area and improve the heat dissipation effect. The light source mounting unit 12 and the heat dissipation unit 13 may be colored in a color that has high heat dissipation properties (for example, black). Such a configuration makes it easier to dissipate the heat generated by the light source unit 11.

[0021] One end of the electric wire 14 of the lighting fixture main body 10 is connected to the light source unit 11, and the other end of the electric wire 14 is connected to the power supply unit 35. The electric wire 14 is configured to be able to supply power from the power supply unit 35 to the light source unit 11. The electric wire 14 extends upward from the light source unit 11 and is inserted into the through-hole of the lighting fixture mounting unit 12 and the through-hole of the heat dissipation unit 13, and is drawn out from the center of the upper surface of the heat dissipation unit 13. The plate member 15 is made of a metal material. The plate member 15 is formed into a generally V-shape in side view by bending a flat metal member. The plate member 15 of this embodiment is made using a galvanized steel plate. The plate member 15 is not limited to a galvanized steel plate, and can be made by appropriately selecting a material having the desired thermal conductivity and durability. Plate member 15 is disposed so as to abut against heat dissipation section 13 and cover part of heat dissipation section 13 (the upper surface and part of the inclined surface described below), and dissipates heat generated by irradiating light from light source section 11. By disposing plate member 15 in this manner, a configuration is achieved that can dissipate heat in addition to the heat dissipation effect of heat dissipation section 13, thereby improving the heat dissipation effect. The shape, size, and number of plate members 15 are not limited to those in this embodiment and can be adjusted as appropriate. Furthermore, plate members 15 are not necessarily required as a component of lighting device 1, and can be used as needed.

[0022] The fixture body 20 includes a frame body 21 and a lid body 22, and is configured to house the lighting fixture body 10 inside.

[0023] The frame 21 of the fixture main body 20 is configured in a generally cylindrical shape with openings at the top and bottom. The frame 21 includes an opening 23 and a rotation guide portion 24. In the frame 21 of this embodiment, a reflector 25 can be detachably attached below the light source portion 12.

[0024] An opening at the lower end of the frame 21 of the fixture body 20 is configured as an opening 23 through which light from the light source unit 11 of the lighting fixture body 10 is irradiated. The frame 21 has an annular flat plate that protrudes from the upper end of the frame 21 toward the center. The annular flat plate portion of the frame 21 is configured as a rotation guide portion 24. In this embodiment, when the lighting fixture 1 is attached to the attachment surface C, the rotation guide portion 24 is formed so as to be parallel to the attachment surface C. The reflector 25 is configured in a substantially truncated cone shape that is open at the top and bottom. The reflector 25 is configured so that its diameter decreases as it goes upward. The reflector 25 is arranged inside the frame 21 so that the vertical positions of the lower end of the reflector 25 and the lower end of the frame 21 are approximately aligned.

[0025] The lid 22 of the fixture body 20 is configured in a generally cylindrical shape with a bottom at the top. The lid 22 is provided to cover the top of the frame 21 and is configured as one unit with the frame 21. The interior of the frame 21 and the lid 22 is configured as a hollow space in which the lamp body 10 is disposed. The frame 21 and the lid 22 are configured to surround the lamp body 10. The light source section 11 of the lamp body 10 is disposed above the reflector 25 inside the frame 21 and the lid 22 of the fixture body 20, and is located midway between the top and bottom of the frame 21. Furthermore, a part (top) of the light source arrangement section 12 of the lamp body 10 and the heat dissipation section 13 are located above the upper opening of the frame 21 and the rotation guide section 24 inside the frame 21 and the lid 22 of the fixture body 20.

[0026] The mounting spring 30 uses its restoring force to keep the lighting fixture 1 embedded in an embedding hole formed in the mounting surface. The mounting spring 30 is fixed to the frame body 21 with fixing members such as screws. The mounting spring 30 is configured to extend laterally from the frame body 21. It is to be noted that a configuration in which three or more mounting springs 30 are provided may also be used.

[0027] The power supply unit 35 is a power supply device that supplies power to the light source unit 11 via the electric wire 14 of the lamp body 10 to light the light source unit 11. The power supply unit 35 converts AC current supplied from an external commercial power source into a predetermined DC current and supplies the converted current to the light source unit 11. The power supply unit 35 is disposed on the upper surface of the mounting surface C.

[0028] As shown in FIG. 2, the support member 40 supports the lighting fixture body 10 rotatably relative to the fixture body 20 around a parallel axis parallel to the mounting surface C and an orthogonal axis perpendicular to the mounting surface C. In this embodiment, the parallel axis parallel to the mounting surface C is, for example, line α shown in FIG. 2. The orthogonal axis perpendicular to the mounting surface C is, for example, line β shown in FIG. 2. The two support members 40 are arranged facing each other with line β at the center. The support member 40 is made of a flat metal plate-shaped member. The support member 40 is configured to have a generally rectangular shape in side view with its short side extending up and down. As shown in FIG. 3, 5, or 6, the support member 40 includes a rotation support shaft 41 and a pair of cutouts 42.

[0029] The support member 40 has a through hole at the horizontal center and slightly above the vertical center. A fixing member such as a screw is inserted into the through hole 44 of the support member 40, and the fixing member is threadedly engaged with a threaded hole on the outer surface of the lamp mounting portion 12 of the lamp body 10. The support member 40 is configured to be rotatable relative to the light source mounting portion 12 of the lamp body 10 around the fixing member when the fixing member inserted into the through hole is fastened to the light source mounting portion 12 of the lamp body 10. The fixing member inserted into the through hole of the support member 40 and fastened to the light source mounting portion 12 of the lamp body 10 is configured as a rotation support shaft 41. In this embodiment, the screw axis of the rotation support shaft 41, which is the fixing member, is arranged along line α in FIG. 2. This allows the lamp body 10 to be rotatable around line α. In the lighting fixture 1 of this embodiment, as shown in FIG. 5, the lamp body 10 can be tilted left and right from line β around the rotation support shaft 41 within a range of approximately 30°.

[0030] A pair of cutout portions 42 of the support member 40 are formed on each edge portion on the shorter side of the support member 40. The pair of cutout portions 42 are formed by linearly cutting out, and are configured to be arranged on the same straight line. The cutout portions 42 are located below the rotation support shaft 41. The rotation guide portion 24 of the instrument body 20 is engaged with the cutout portions 42. The support member 40 of this embodiment is configured to be rotatable along the rotation guide portion 24 as shown in FIG. 8 when the rotation guide portion 24 of the instrument body 20 and the cutout portions 42 are engaged. The support member 40 is configured to be rotatable relative to the frame body 21 of the instrument body 20 around an orthogonal axis (line β).

[0031] With this configuration, the support member 40 supports the lighting fixture body 10 rotatably around the parallel axis (line α) within the fixture body 20. Furthermore, when the lighting fixture body 10 rotates relative to the fixture body 20 around the orthogonal axis (line β), the support member 40 rotates together with the lighting fixture body 10. Furthermore, the support member 40 supports the lighting fixture body 10 rotatably relative to the fixture body 20 around the orthogonal axis by fitting the cutout portion 42 into the rotation guide portion 24 of the fixture body 20.

[0032] As described above, the support member 40 supports the lighting fixture body 10 rotatably relative to the fixture body 20 around the orthogonal axis by fitting the cutout portion 42 into the rotation guide portion 24 of the fixture body 20. With this configuration, the support member 40 does not surround the outside of the lighting fixture body 10, but supports the lighting fixture body 10 rotatably relative to the fixture body 20 around the orthogonal axis. Because no rotation mechanism for supporting the lighting fixture body 10 rotatably about the orthogonal axis is provided above the lighting fixture body 10, the height of the fixture body 20 can be reduced. Therefore, even if the lighting fixture body 10 is configured to be rotatable relative to the fixture body 20 around the parallel axis and the orthogonal axis, the lighting fixture 1 can be configured to be compact. This configuration also improves the ease of installation of the lighting fixture 1. For example, even if the installation space above the ceiling is narrow because a heat insulating material is placed above the ceiling, the lighting fixture 1 can be installed more easily by reducing its height (reducing its size in the height direction). Furthermore, this configuration allows the lamp body 10 to be made larger without changing the size of the fixture body 20. In particular, when realizing a high-output lighting fixture 1, the heat dissipation section 13 may be made larger to improve the heat dissipation of the lamp body 10. If a rotation mechanism for the lamp body 10 is provided on the upper part of the fixture body 20, as in the lighting fixture of Patent Document 1, the rotation mechanism on the upper part of the fixture body 20 restricts the size of the heat dissipation section 13 in the vertical direction of the fixture body 20. By configuring the lighting fixture 1 of this embodiment, the upper part of the fixture body 20 is not restricted by the rotation mechanism of the lamp body 10, so the heat dissipation section 13 can be made larger in the vertical direction. This allows a small lighting fixture 1 to achieve high output.

[0033] As described above, the rotation support shaft 41 of the support member 40 supports the lamp body 10 rotatably relative to the fixture body 20 around the parallel axis. The rotation support shaft 41 of the support member 40 rotates together with the lamp body 10 when the lamp body 10 rotates relative to the fixture body 20 around the orthogonal axis. By configuring in this manner, the support member 40 can support the lamp body 10 rotatably relative to the fixture body 20 around the parallel axis and the orthogonal axis without surrounding the outside of the lamp body 10. Therefore, even if the lamp body 10 is configured to be rotatable relative to the fixture body 20 around the parallel axis and the orthogonal axis, the lighting fixture 1 can be configured to be compact.

[0034] As described above, the support member 40 is configured in a flat plate shape. By configuring it in this manner, the support member 40 can support the lighting fixture body 10 rotatably relative to the fixture body 20 about parallel and perpendicular axes, without being configured so that it surrounds the outside of the lighting fixture body 10. By configuring the support member 40 to be small and simple, the rotation mechanism of the lighting fixture body 10 of the lighting fixture 1 can be made smaller and simpler. Therefore, even if the lighting fixture body 10 is configured to be rotatable relative to the fixture body 20 about parallel and perpendicular axes, the lighting fixture 1 can be configured to be small.

[0035] Furthermore, the tool body 20 includes a rotation restricting portion 26 , and the support member 40 includes a contact portion 43 .

[0036] The frame 21 of the fixture main body 20 has a through hole near the rotation guide portion 24. A female thread is formed on the inner peripheral surface of the through hole of the frame 21, and a fixing member such as a screw is screwed into the through hole. A part of the threaded portion of the fixing member protrudes into the inside of the frame 21. The part of the fixing member protruding into the inside of the frame 21 is configured as a rotation restricting portion 26 (see Figure 4 or Figure 8). The rotation restricting portion 26 restricts the movement of the lighting fixture main body 10 and the support member 40, which rotate relative to the fixture main body 20 around an orthogonal axis.

[0037] As shown in Figures 3, 5, and 6, the abutment portion 43 of the support member 40 protrudes downward from the lower edge of the support member 40. The abutment portion 43 protrudes so that the rotation restricting portion 26 of the fixture body 20 is positioned on the rotation trajectory of the abutment portion 43 when the lamp body 10 rotates relative to the fixture body 20 about the orthogonal axis. When the lamp body 10 and the support member 40 rotate a predetermined angle relative to the fixture body 20 about the orthogonal axis, the abutment portion 43 of the support member 40 abuts against the rotation restricting portion 26 of the fixture body 20. In this way, the abutment portion 43 of the support member 40 abuts against the rotation restricting portion 26 of the fixture body 20, thereby restricting the movement of the lamp body 10 and the support member 40 rotating relative to the fixture body 20 about the orthogonal axis.

[0038] For example, when the lamp body 10 and the support member 40 are rotated counterclockwise in plan view around the orthogonal axis relative to the fixture body 20, the abutment portion 43 of one of the two support members 40 abuts against the rotation restricting portion 26 of the fixture body 20 (see FIGS. 8(A) and 8(B)). Furthermore, when the lamp body 10 and the support member 40 are rotated clockwise in plan view around the orthogonal axis from the state in which the abutment portion 43 of one of the two support members 40 abuts against the rotation restricting portion 26 of the fixture body 20, the abutment portion 43 of the other of the two support members 40 abuts against the rotation restricting portion 26 of the fixture body 20 (see FIGS. 8(C) and 8(D)). In this way, the rotation restricting portion 26 of the fixture body 20 restricts the operation of the lamp body 10 and the support member 40 rotating relative to the fixture body 20 around the orthogonal axis.

[0039] As described above, the rotation restricting portion 26 of the fixture body 20 restricts the movement of the lamp body 10 and the support member 40 which rotate about the orthogonal axis relative to the fixture body 20. Therefore, it is possible to configure the lamp body 10 to be supported by the support member 40 so that it is rotatable about the orthogonal axis relative to the fixture body 20, while restricting the movement of the lamp body 10 and the support member 40 which rotate about the orthogonal axis relative to the fixture body 20. It is also possible to prevent excessive load from being applied to the electric wire 14 when the lamp body 10 and the support member 40 rotate about the orthogonal axis relative to the fixture body 20.

[0040] As described above, the rotation restricting portion 26 of the fixture body 20 restricts the movement of the lamp body 10 and the support member 40 rotating about the orthogonal axis relative to the fixture body 20 by the abutment portion 43 of the support member 40 abutting against it. Therefore, with a simple configuration in which the abutment portion 43 is integrally provided so as to protrude downward from the lower edge of the support member 40, it is possible to restrict the movement of the lamp body 10 and the support member 40 rotating about the orthogonal axis relative to the fixture body 20.

[0041] The two support members 40 are arranged to face each other about an orthogonal axis. The abutment portion 43 of one of the two support members 40 is arranged on one side in the longitudinal direction of the support member 40 (the right side in side view in Figures 5, 6, and 8(B)). The abutment portion 43 of the other of the two support members 40 is arranged on the other side in the longitudinal direction of the support member 40 (the left side in side view in Figure 8(D)). The longitudinal length of the support member 40 at the abutment portion 43 is configured to be half or less of the longitudinal length of the support member 40. When the longitudinal central edge of the support member 40 at the abutment portion 43 abuts against the rotation restriction portion 26 of the instrument body 20, the rotation restriction portion 26 of the instrument body 20 and the rotation support shaft 41 of the support member 40 are configured to approximately coincide in the up-down direction. By configuring it in this manner, the range in which the lighting fixture body 10 and the support member 40 rotate relative to the fixture body 20 around the orthogonal axis is approximately 180°, and the range in which the lighting fixture body 10 and the support member 40 rotate relative to the fixture body 20 around the orthogonal axis can be made relatively wide.

[0042] The two support members 40 are configured to have the same shape. By standardizing the multiple support members 40 in this way, it is possible to reduce manufacturing costs.

[0043] As shown in Fig. 5, the heat dissipation section 13 of the lamp body 10 is configured in a generally truncated cone shape from the vertical midpoint to the upper end, with the diameter tapering upward. The inclined surfaces constituting the generally truncated cone shape of the heat dissipation section 13 are configured to be inclined at approximately 30° with respect to the line β. When the lamp body 10 rotates relative to the fixture body 20 around the parallel axis, the inclined surfaces constituting the generally truncated cone shape of the heat dissipation section 13 come into contact with the inner surface of the cover 22 of the fixture body 20, thereby restricting the rotation of the lamp body 10. The angle through which the lamp body 10 can rotate relative to the fixture body 20 around the parallel axis is set to a range of approximately 60°.

[0044] In this way, the diameter of the heat dissipation section 13 of the lighting fixture body 10 decreases from the vertical midpoint to the upper end as it goes upward, so that the range in which the lighting fixture body 10 can rotate about the parallel axis relative to the fixture body 20 can be configured relatively wide while maintaining the heat dissipation effect of the heat dissipation section 13. Note that the inclination angle of the inclined surface that configures the approximately truncated cone shape of the heat dissipation section 13 is not limited to this configuration and can be set appropriately according to specifications.

[0045] As shown in Figures 3 and 5, the plate member 15 of the lighting fixture body 10 has an insertion portion 15a. The insertion portion 15a is configured so that the electric wire 14 protruding from the center of the upper surface of the heat dissipation portion 13 can be inserted through the insertion portion 15a. The insertion portion 15a is configured as an elongated hole whose longitudinal direction is perpendicular to the line α in a plan view. The width of the insertion portion 15a in the short direction is configured to be slightly larger than the thickness of the electric wire 14.

[0046] In this way, the insertion portion 15a of the plate member 15 of the lighting fixture body 10 is configured as an elongated hole with its longitudinal direction perpendicular to the line α in a plan view, so that when the lighting fixture body 10 rotates relative to the fixture body 20 about the parallel axis, the position of the electric wire 14 moves within the insertion portion 15a of the member 15. The plate member 15 has a heat dissipation effect, and the lighting fixture body 10 can smoothly rotate about the parallel axis relative to the fixture body 20. Note that the insertion portion 15a is not limited to an elongated hole, and may be configured as a notch cut out from the edge of the plate member 15, a hole larger than the thickness of the electric wire 14, or the like.

[0047] As shown in FIG. 5, the cover 22 of the instrument body 20 includes a step portion 27, an enlarged diameter portion 28, and a reduced diameter portion 29.

[0048] The step portion 27 of the cover 22 of the fixture body 20 is formed midway between the top and bottom of the cover 22. The cover 22 is configured so that the diameter of the portion above the step portion 27 is larger than the diameter of the portion below the step portion 27. The portion above the step portion 27 is configured as an expanded diameter portion 28. The portion of the heat dissipation portion 13 of the lighting fixture body 10 that is configured to be approximately frustum shaped is disposed within the expanded diameter portion 28.

[0049] In this way, the substantially truncated cone-shaped portion of the heat dissipation section 13 of the lamp body 10 is disposed within the expanded diameter section 28 of the lid body 22 of the fixture body 20, and therefore the range over which the lamp body 10 can rotate relative to the fixture body 20 around the parallel axis can be configured to be relatively wide. Furthermore, by providing the expanded diameter section 28 in the upper part of the lid body 22 in this way, the area of ​​the space in the upper part of the lid body 22 can be made larger than that of the lower part, and therefore the volume of air within the lid body 22 can be increased. In a configuration in which the lamp body 10 is housed inside the lid body 22, as in the lighting fixture 1 of this embodiment, a larger space within the lid body 22 makes it easier for air convection to occur within the lid body 22, thereby improving heat dissipation.

[0050] The portion of the cover 22 of the fixture body 20 below the step 27 is configured as a reduced diameter section 29. The lamp mounting section 12 of the lamp body 10 is disposed within the reduced diameter section 29. A predetermined space is formed outside the reduced diameter section 29 of the cover 22 and below the step 27. The predetermined space is configured so that the free end of the mounting spring 30 can be disposed therein when the mounting spring 30 is deformed so as to rotate upward.

[0051] With this configuration, when the lighting fixture 1 is inserted into a recessed hole formed in the mounting surface, the free end of the mounting spring 30 is positioned in the predetermined space in the lid 22, thereby preventing the mounting spring 30 from interfering with the recessed hole. This makes it possible to provide a larger space above the fixture body 20 without increasing the radial size of the lighting fixture 1, even if the lighting fixture body 10 is configured to be rotatable relative to the fixture body 20 about parallel and perpendicular axes within the fixture body 20. Note that instead of a configuration in which the lid 22 has a reduced diameter portion 29 and the mounting spring 30 is positioned in the predetermined space, the lid 22 may have a recess or a through-hole or the like in which the mounting spring 30 can be positioned.

[0052] The step portion 27 of the cover 22 of the device body 20 is configured in an annular shape, and the reduced diameter portion 29 is configured in a cylindrical shape. With this configuration, the predetermined space is formed around the entire circumference of the cover 22, and the mounting position of the mounting spring 30 in the circumferential direction of the frame 21 can be set without any restrictions.

[0053] As shown in FIG. 7 , the lighting fixture body 10 has two protrusions 17 on the bottom below the light source arrangement section 12. The protrusions 17 are configured as parts on which an operator hooks a finger or nail to rotate the lighting fixture body 10 relative to the fixture body 20. The protrusions 17 protrude downward from the irradiation surface side of the light source section 11 in the light source arrangement section 12. The protrusions 17 are configured in the form of straight stripes when viewed from the bottom. The protrusions 17 are arranged on the side of the opening that irradiates light from the light source section 11 and below the light source section 11. The protrusions 17 are exposed on the irradiation surface side of the light source section 11 in the light source arrangement section 12. The two protrusions 17 are arranged to face each other with the line β (light source section 11) as the center. One of the two protrusions 17 is arranged near one of the two support members 40 and aligned with the support member 40. The other of the two protrusions 17 is disposed adjacent to the other of the two support members 40 so as to be aligned with the support member 40. The protrusion 17 is disposed so as to overlap with the line α in a bottom view.

[0054] As described above, the convex portion 17 of the lighting fixture body 10 is a portion that rotates the lighting fixture body 10 relative to the fixture body 20, and protrudes downward from the illumination surface side of the light source unit 11 in the light source arrangement section 12. This makes it easy to rotate the lighting fixture body 10 relative to the fixture body 20.

[0055] As described above, the multiple (two in this embodiment) protrusions 17 of the lighting fixture body 10 are arranged around the light source unit 11. Therefore, even if the protrusions 17 are not visible to the worker, for example, by touching the lower end side of the light source arrangement unit 12 (particularly near the irradiation opening), the worker's finger can touch one of the multiple protrusions 17, making it easy to recognize the location of the protrusion 17. This allows the worker to easily rotate the lighting fixture body 10 relative to the fixture body 20.

[0056] As described above, the convex portion 17 of the lighting fixture body 10 is arranged in the vicinity of the support member 40 so as to be aligned with the support member 40. Therefore, even when the lighting fixture body 10 is tilted relative to the fixture body 20 about the orthogonal axis, it is possible to prevent the convex portion 17 from casting a shadow on the light emitted from the light source unit 11 of the lighting fixture body 10.

[0057] The lamp body 10 may be configured to have one or three or more protrusions 17. The position of the protrusions 17 is not limited to the above positions and can be set to other positions as needed. The protrusions 17 may be configured to have an arc shape when viewed from the bottom, or may be configured to have a cylindrical or hemispherical shape, etc. Furthermore, the rigidity of the protrusions 17 can be increased by configuring the shape of the protrusions 17 to be a shape that follows the circumferential direction of the light source arrangement section 12, for example, a linear stripe as seen in bottom view as in this embodiment, or an arc-like shape that extends downward as seen in bottom view. With this configuration, when rotating the lighting fixture body 10 about the perpendicular axis, the worker places their finger on the side portion of the protrusions 17 and presses it in the direction of the desired rotation. Because the side portion of the protrusions 17 is more rigid than the flat portion, deformation of the protrusions 17 is suppressed when the lighting fixture body 10 is rotated about the perpendicular axis.

[0058] The lighting body 10 has two recesses 18 on the bottom below the light source arrangement section 12. The recesses 18 are configured as portions into which an operator hooks a finger, nail, or the like to rotate the lighting body 10 relative to the fixture body 20. The recesses 18 are configured by cutting out a portion of the light source arrangement section 12 on the side of the light source section 11 that faces the irradiation surface. The recesses 18 are arranged on the outer lateral side of the protrusions 17. The recesses 18 are exposed on the light source arrangement section 12 on the side of the light source section 11 that faces the irradiation surface. The two recesses 18 are arranged to face each other with a line β (light source section 11) as the center. One of the two recesses 18 is arranged adjacent to one of the two protrusions 17 so as to be aligned with the protrusion 17. The other of the two recesses 18 is arranged adjacent to the other of the two protrusions 17 so as to be aligned with the protrusion 17. The recesses 18 are arranged on the line α in a bottom view.

[0059] As described above, the recess 18 of the lighting fixture body 10 is arranged adjacent to the protrusion 17 so as to be aligned with the protrusion 17. By providing the recess 18 in the light source arrangement section 12, unevenness is formed on the irradiation surface side of the lighting fixture body 10. Therefore, even if the protrusion 17 or the recess 18 cannot be seen, for example, the location of the protrusion 17 or the recess 18 can be more easily recognized by touching the lower end side of the light source arrangement section 12, and the worker can easily rotate the lighting fixture body 10 relative to the fixture body 20. Furthermore, by arranging the recess 18 adjacent to the protrusion 17, the downward protrusion length of the protrusion 17 can be configured to be relatively short, and the protrusion 17 can be prevented from casting a shadow on the light emitted from the light source section 11 of the lighting fixture body 10. [Explanation of symbols]

[0060] 1. Lighting equipment 10 Light fixture body 11 Light source section 12 Light source arrangement section 13 Heat radiation part 14 Electric wire 15 Plate members 17 Convex part 18 Recess 20. Instrument body 21 Frame 22 Lid 23 Aperture 24 Rotation guide part 25 Reflector 26 Rotation control part 27 Stepped section 28 Expanded diameter part 29 Reduced diameter part 30 Mounting spring 40 Support member 41 Rotating support shaft 42 Notch 43 Contact part

Claims

1. A lighting fixture that is attached to an attachment surface, a lighting fixture body including a light source unit; a fixture body in which the light source unit is housed; a support member that supports the lighting fixture body rotatably relative to the fixture body around a parallel axis parallel to the mounting surface and an orthogonal axis orthogonal to the mounting surface, The fixture body includes a frame body having an opening through which light from the light source unit is irradiated, The frame body includes a rotation guide portion, The support member has a notch portion, and the notch portion is engaged with the rotation guide portion to support the lighting fixture body rotatably relative to the fixture body around an orthogonal axis. Lighting fixtures.

2. The support member is a rotation support shaft that supports the lighting fixture body so as to be rotatable relative to the fixture body about a parallel axis; When the lamp body rotates relative to the fixture body around the orthogonal axis, the rotation support shaft rotates together with the lamp body.

10. The lighting fixture of claim 1.

3. The support member is configured in a flat plate shape.

3. A lighting fixture according to claim 2.

4. The instrument body includes a rotation restricting portion that restricts the movement of the support member that rotates relative to the instrument body around an orthogonal axis.

4. A lighting fixture according to claim 3.

5. the support member includes an abutment portion, the abutment portion protrudes so that the rotation restriction portion is positioned on a rotation trajectory of the abutment portion when the lighting fixture body rotates relative to the fixture body around the orthogonal axis, The rotation restricting portion restricts the movement of the support member rotating relative to the instrument main body around the orthogonal axis by the abutment portion abutting against the rotation restricting portion.

5. A lighting fixture according to claim 4.

6. At least two of the support members are provided, At least two of the support members are configured to have the same shape.

6. A lighting fixture according to any one of claims 1 to 5.

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