Lighting fixture

Abstract

To provide a lighting fixture capable of improving designability.SOLUTION: A lighting fixture 100 includes: a light source 10; a socket 20 on which the light source 10 is mounted; a fixture body 30 where the socket 20 is stored; an arm 40 having a rotary shaft 42 for supporting the fixture body 30 so as to rotate; and a base 50 supporting the arm 40, and fixed to a ceiling surface. The fixture body 30 includes: a plate spring 32 for pressing the rotary shaft 42 of the arm 40; and an adjustment screw 33 for fastening the fixture body 30 and the plate spring 32, and for adjusting a pressing force of the plate spring 32 by a fastening force. The adjustment screw 33 is fastened / loosened from the side where the light source 10 is stored.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to lighting fixtures.

Background Art

[0002] In lighting fixtures, spotlights that irradiate light at a predetermined point are known. By changing the direction or angle of the light, a spotlight can illuminate a desired location more brightly (for example, see Patent Document 1).

[0003] A spotlight has, for example, a light source, an instrument body that houses the light source, an arm that supports the instrument body, and a base that is provided on a ceiling surface or the like and supports the arm. The arm has, for example, a rotation axis that rotatably supports the instrument body. Further, the instrument body has, for example, a leaf spring that presses the rotation axis and an adjustment screw that fastens the instrument body and the leaf spring.

[0004] With the above configuration, by tightening and loosening the adjustment screw, the fastening force between the instrument body and the leaf spring is adjusted, the pressing force of the leaf spring against the rotation axis is adjusted, the frictional force between the leaf spring and the rotation axis is adjusted, and the instrument body and the light source are made to be stationary at a predetermined position with respect to the arm.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] By the way, the above-described adjustment screw is often arranged to be tightened and loosened from the outside of the instrument body. However, when the head of the adjustment screw is exposed on the outer contour of the instrument body, the design property of the lighting fixture is impaired.

[0007] In addition, when the instrument body rotates with respect to the arm, a buffer material may be disposed at a portion where the instrument body contacts the arm. However, when the buffer material is disposed on the outer contour of the instrument body, the design property of the lighting fixture is impaired. Therefore, when the instrument body rotates with respect to the arm, a configuration that can restrict the amount of rotation of the instrument body so as not to contact the arm is desired.

[0008] Therefore, an object of the present disclosure is to provide a lighting fixture capable of improving the design property.

Means for Solving the Problems

[0009] The lighting fixture according to the present disclosure includes a light source, a socket to which the light source is attached, an instrument body that houses the socket, an arm having a rotation shaft that rotatably supports the instrument body, a base that supports the arm and is fixed to the surface to be attached, and the instrument body has a pressing member that presses the rotation shaft of the arm, and an adjustment screw that fastens the instrument body and the pressing member and adjusts the pressing force of the pressing member by the fastening force, and the adjustment screw is tightened and loosened from the side where the light source is housed.

[0010] The lighting fixture according to the present disclosure includes a light source, a socket to which the light source is attached, an instrument body that houses the light source and the socket, an arm having a rotation shaft that rotatably supports the instrument body, a base that supports the arm and is fixed to the surface to be attached, and the instrument body has a pressing member that presses the rotation shaft of the arm, and the pressing member is provided with a convex portion that protrudes toward the rotation shaft, and the rotation shaft is formed with a groove portion that engages with the convex portion, and the groove portion is formed by a predetermined angle along the rotation direction.

Effects of the Invention

[0011] According to the lighting fixture of the present disclosure, the design property can be improved.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0013] Hereinafter, a lighting fixture 100 which is an example of an embodiment will be described with reference to the drawings. Note that each of the embodiments described below shows an example of the present disclosure. Therefore, the numerical values, components, arrangements and connection forms, etc. shown in the following embodiments are examples and are not intended to limit the present disclosure. Thus, among the components in the following embodiments, components not described in the independent claims indicating the highest concept of the present disclosure are described as optional components.

[0014] Each figure is a schematic diagram and is not necessarily drawn precisely. In each figure, the same reference numerals are given to substantially the same configurations, and duplicate explanations may be omitted or simplified. Also, in this specification, the terms "upper" and "lower" do not necessarily refer to the upward direction (vertically upward) and the downward direction (vertically downward) in an absolute spatial recognition.

[0015] Hereinafter, for the sake of easy understanding, the light source 10, the socket 20, and the fixture body 30 may be described using the irradiation direction of the light source 10 (hereinafter referred to as the light irradiation direction). Also, there may be a case where the upstream side of the light irradiation direction is described as the upper side (ceiling surface side), and the downstream side of the light irradiation direction is described as the lower side (bottom surface side).

[0016] [Overall Configuration of Lighting Fixture] The overall configuration of the lighting fixture 100 will be described with reference to FIGS. 1 and 2.

[0017] The lighting fixture 100 is, for example, a spotlight that irradiates light at a predetermined point. The lighting fixture 100 is, for example, disposed on the ceiling surface of a building or the like. However, the lighting fixture of the present disclosure may be disposed other than the ceiling surface, and may be disposed, for example, on a duct rail fixed to the ceiling surface. Also, the present disclosure may be applied to lighting fixtures other than spotlights.

[0018] The lighting fixture 100 includes a light source 10, a socket 20 in which the light source 10 is mounted, a fixture body 30 in which the socket 20 is housed, an arm 40 that rotatably supports the fixture body 30, and a base 50 that rotatably supports the arm 40 and is fixed to the ceiling surface as the mounting surface.

[0019] [Light Source Unit] The light source 10 will be described with reference to FIGS. 2 and 3.

[0020] The light source 10 is, for example, an LED (Light Emitting Diode) light source. The light source 10 includes a housing 11, a light emitting portion 12 supported by the housing 11, a lens 13 disposed below the light emitting portion 12, two power supply pins 14 that receive power for causing the light emitting portion 12 to emit light, and a drive circuit 15 for driving the light emitting portion 12.

[0021] The housing 11 is a member that forms the outer shell of the light source 10. The housing 11 is made of resin or metal and is formed in a substantially cylindrical shape. The housing 11 holds the light emitting portion 12 and the lens 13. Also, a drive circuit 15 is housed inside the housing 11. On the top surface of the housing 11, a convex portion 11A that protrudes upward is formed. The convex portion 11A is formed in a substantially cylindrical shape. A capacitor 16, which is a part of the drive circuit 15, is housed in the convex portion 11A. By adopting such a configuration, the capacitor 16, which is a high-temperature component compared to other components of the drive circuit 15, can be efficiently cooled.

[0022] A reduced-diameter portion 11B is formed at the upper end of the housing 11. When the light source 10 is mounted on a socket 20 housed in the fixture body 30, the cylindrical lower end of the housing 31 of the fixture body 30 fits into the reduced-diameter portion 11B. By adopting such a configuration, the shape of the housing 11 of the light source 10 in a cross-sectional view perpendicular to the light irradiation direction and the shape of the housing 31 of the fixture body 30 in a cross-sectional view perpendicular to the light irradiation direction can be made to fit. As a result, the light source 10 and the fixture body 30 have a shape without a step in the light irradiation direction, and the design of the lighting fixture 100 can be improved.

[0023] The light emitting portion 12 emits light by the power supplied from the drive circuit 15. The light emitting portion 12 emits, for example, white light. The light emitting portion 12 is constituted by, for example, LEDs. The light emitting portion 12 has a substrate and one or more LED elements mounted on the substrate. The LED element may be a surface-mount type LED package or an LED chip.

[0024] The lens 13 is an optical member having translucency and transmits the light emitted from the light emitting portion 12. Also, the lens 13 is a condenser lens that condenses the light emitted from the light emitting portion 12 and is, for example, a Fresnel lens. The lens 13 is made of a translucent material having translucency and is constituted by, for example, a transparent resin material such as acrylic or polycarbonate, or a glass material.

[0025] The power supply pin 14 is a conductive pin that receives power from outside the light source 10 to cause the light emitting part 12 to emit light. The power supply pin 14 and the drive circuit 15 are electrically connected by an electric wire (not shown) housed in the housing 11. The power supply pin 14 is a pin having a T-shaped cross section with a disk-shaped large-diameter part at the tip. Also, the distance between two power supply pins 14 is the same as the distance P between terminal parts 25B which are pin mounting parts to be described later in detail.

[0026] Also, the power supply pin 14 is a connection pin for connecting the light source 10 to the socket 20. The power supply pin 14 is electrically connected to the socket 20. Although details will be described later, the power supply pin 14 is locked to the terminal part 25B which is a pin mounting part of the connection terminal 25 provided on the socket 20, and is electrically and mechanically connected to the terminal part 25B. Also, when the power supply pin 14 is connected to the terminal part 25B, the light source 10 is held by the socket 20.

[0027] The drive circuit 15 is a power supply circuit for causing the light emitting part 12 to emit light, and supplies predetermined power to the light emitting part 12. The drive circuit 15 has a capacitor 16 which is a high-temperature component compared to other components of the drive circuit 15. The drive circuit 15, for example, converts the AC power received by the power supply pin 14 (for example, commercial AC power of AC100V) into DC power, and supplies the DC power to the light emitting part 12.

[0028] [Socket] The socket 20 will be described with reference to FIGS. 2 to 5.

[0029] As shown in FIGS. 2 to 5, the socket 20 is a member to which the light source 10 is attached as described above. Also, the socket 20 is a member that supplies power to the light source 10. The socket 20 is housed in the appliance main body 30. The socket 20 has a housing 21 and two connection terminals 25, details of which will be described later.

[0030] As shown in FIGS. 3 to 5, the housing 21 is a member that forms the outer contour of the socket 20. The housing 21 is made of, for example, resin and is formed in a ring shape having a top surface. The housing 21 has an upper cover 21A that covers the upper side of the housing 21 and a lower cover 21B that covers the lower side of the housing 21. Two long holes 22, a recess 23, and an adjustment screw viewing hole 24, the details of which will be described later, are formed in the lower cover 21B. The long holes 22 are formed in a substantially arc shape on the bottom surface of the housing 21. The long holes 22 each have a pin insertion hole 22A, a pin mounting hole 22B, and a pin guide hole 22C, the details of which will be described later.

[0031] As shown in FIG. 4, the pin insertion hole 22A is formed with an enlarged diameter at one end of the long hole 22. The pin mounting hole 22B is formed at the other end of the long hole 22 and is formed at a position where the terminal portion 25B as the pin mounting portion of the connection terminal 25 described later can be seen. The pin guide hole 22C communicates the pin insertion hole 22A and the pin mounting hole 22B and is formed in an arc shape along the pin guide portion 25C of the connection terminal 25 described later.

[0032] Here, when the light source 10 is mounted on the socket 20, the light source 10 is inserted into the socket 20, and the light source 10 is rotated with respect to the socket 20, whereby the light source 10 is mounted on the socket 20. When the light source 10 is inserted into the socket 20, the power supply pin 14 is inserted into the pin insertion hole 22A of the long hole 22. When the light source 10 is rotated with respect to the socket 20, the power supply pin 14 is guided by the pin guide hole 22C of the long hole 22, and after the light source 10 is rotated with respect to the socket 20, the power supply pin 14 reaches the pin mounting hole 22B.

[0033] The recess 23 is formed at a substantially central portion of the socket 20. The recess 23 is formed in a circular shape in plan view. When the light source 10 is mounted on the socket 20, the convex portion 11A of the housing 11 of the light source 10 is fitted into the recess 23. Thereby, the capacitor 16, which is a component of the drive circuit 15 of the light source 10, can be accommodated at a substantially central portion of the socket 20, and the space occupied by the light source 10 and the socket 20 can be reduced.

[0034] The adjustment screw viewing hole 24 penetrates through the housing 21 of the socket 20 along the light irradiation direction. The adjustment screw viewing hole 24 is formed at a position corresponding to an adjustment screw 33, which will be described in detail later, in a cross-sectional view perpendicular to the light irradiation direction. According to the adjustment screw viewing hole 24, the adjustment screw 33 can be tightened and loosened with the light source 10 removed from the socket 20 of the instrument main body 30.

[0035] As shown in FIGS. 4 and 5, the connection terminal 25 is a terminal that supplies the power supplied from an internal power line (not shown) to the power supply pin 14. The connection terminal 25 is a member made of a conductive metal. The connection terminal 25 is housed in the upper cover 21A. The connection terminal 25 is housed at a position corresponding to the long hole 22 in the housing 21. The connection terminal 25 has a pin introduction portion 25A, a terminal portion 25B as a pin mounting portion, and a pin guiding portion 25C, which will be described in detail later.

[0036] The pin introduction portion 25A is disposed on the way of the pin guiding hole 22C of the long hole 22 and is a portion where the power supply pin 14 is introduced while the light source 10 is being inserted into the socket 20 and rotated.

[0037] The terminal portion 25B as a pin mounting portion is disposed at a position corresponding to the pin mounting hole 22B of the long hole 22 as described above and is a portion where the power supply pin 14 is locked after the light source 10 is rotated with respect to the socket 20. The terminal portion 25B holds the power supply pin 14 and is electrically connected to the power supply pin 14. Further, the terminal portion 25B is electrically connected to the internal power line, and the internal power line and the power supply pin 14 are electrically connected via the terminal portion 25B. Further, when the power supply pin 14 is locked to the terminal portion 25B, the light source 10 is held by the socket 20.

[0038] Here, the terminal portions 25B as pin mounting portions are arranged such that the interval P between the terminal portions 25B is 25 to 40 mm, and preferably the interval P between the terminal portions 25B is 25 to 30 mm. Thereby, when the light source 10 is mounted on the socket 20, the fixing stability of the light source 10 with respect to the socket 20 can be improved.

[0039] Further, the terminal portion 25B as the pin mounting portion is arranged such that when a JIS standard test finger contacts the pin mounting hole 22B of the long hole 22, the test finger does not contact the terminal portion 25B. Thereby, accidents such as electric shock when removing the light source 10 from the socket 20 or attaching (mounting) the light source 10 to the socket 20 can be prevented.

[0040] The pin guide portion 25C is arranged at a position corresponding to the pin guide hole 22C of the long hole 22 as described above, and is a portion where the power supply pin 14 is guided when the light source 10 is rotated with respect to the socket 20.

[0041] [Appliance main body] Again, with reference to FIGS. 1, 2, 6 to 9, the appliance main body 30 will be described.

[0042] As shown in FIGS. 1 and 2, the appliance main body 30 is a member that houses the socket 20 as described above. Further, the appliance main body 30 is a member that houses the upper part of the reduced diameter portion 11B of the housing 11 of the light source 10. Furthermore, the appliance main body 30 is rotatably supported about a horizontal axis by an arm 40. The appliance main body 30 has a housing 31, a leaf spring 32 as a pressing member, an adjustment screw 33, and a fixing screw 34, the details of which will be described later.

[0043] As shown in FIG. 7, the housing 31 is a member that forms the outer shell of the appliance main body 30. The housing 31 is made of, for example, resin and is formed in a cylindrical shape having a top surface portion. Inside the top surface portion of the housing 31, an engaging portion 31A with which the rotation shaft 42 of the arm 40 described later engages, an adjustment screw hole 31B for tightening and loosening the adjustment screw 33 described later, and a fixing screw hole 31C for fastening the fixing screw 34 described later are formed.

[0044] ​As shown in FIGS. 8 and 9, the leaf spring 32 as a pressing member is a member that presses the rotation shaft 42 of the arm 40. The leaf spring 32 is made of, for example, metal and is formed in a gate shape when viewed from the light irradiation direction. The leaf spring 32 has a pressing portion 32A, an adjusting portion 32B, and a fixing portion 32C, the details of which will be described later.

[0045] The pressing portion 32A is a portion that presses the rotation shaft 42. Two pressing portions 32A are formed in the leaf spring 32. The pressing portion 32A is formed in an arc shape along the rotation shaft 42. A convex portion 32D, the details of which will be described later, is formed on one of the pressing portions 32A.

[0046] The adjusting portion 32B is formed so as to connect the two pressing portions 32A on one side in the direction orthogonal to the rotation shaft 42, and a hole through which the adjusting screw 33 passes is formed. The fixing portion 32C is formed to extend from the two pressing portions 32A on the other side in the direction orthogonal to the rotation shaft 42, and a hole through which the fixing screw 34 (see FIG. 6) passes is formed.

[0047] The convex portion 32D is a member that regulates the rotation angle of the rotation shaft 42 by engaging with the groove portion 43 (see FIG. 7) of the rotation shaft 42 of the arm 40. Although the details will be described later, the groove portion 43 is formed at a predetermined angle along the rotation direction of the rotation shaft 42. With such a configuration, since the convex portion 32D can only move within the groove portion 43, the rotation shaft 42 can only rotate by a predetermined angle in which the groove portion 43 is formed. Thereby, the rotation angle of the instrument main body 30 with respect to the arm 40 is regulated.

[0048] Conventionally, when the instrument main body rotates with respect to the arm, a cushioning material is arranged at the portion where the instrument main body contacts the arm so as not to damage the appearance. According to the lighting fixture 100 of the present embodiment, as described above, since the rotation angle of the instrument main body 30 with respect to the arm 40 is regulated, there is no need to arrange a cushioning material at the portion where the instrument main body contacts the arm. Thereby, the design property of the lighting fixture can be improved.

[0049] The adjustment screw 33 is a member for adjusting the pressing force of the leaf spring 32 against the rotation shaft 42. By tightening the adjustment screw 33, the leaf spring 32 is pressed against the rotation shaft 42, the frictional force between the leaf spring 32 and the rotation shaft 42 increases, and it becomes difficult for the instrument body 30 to rotate with respect to the arm 40. On the other hand, by loosening the adjustment screw 33, the pressing force of the leaf spring 32 against the rotation shaft 42 decreases, the frictional force between the leaf spring 32 and the rotation shaft 42 decreases, and it becomes easier for the instrument body 30 to rotate with respect to the arm 40.

[0050] The adjustment screw 33 is tightened and loosened using a tool through the adjustment screw viewing hole 24 that penetrates the socket 20 with the light source 10 removed from the socket 20. With such a configuration, the adjustment screw 33 is not exposed on the outer contour of the instrument body 30. Thereby, for example, the design property of the lighting fixture 100 can be improved as compared with the case where the adjustment screw is disposed on the outer contour of the housing 21 of the instrument body 30.

[0051] [Arm] Once again, the arm 40 will be described with reference to FIGS. 1, 2, 6, and 7.

[0052] As shown in FIGS. 1, 2, 6, and 7, the arm 40 is a member that rotatably supports the instrument body 30 around a horizontal axis as described above. Further, the arm 40 is rotatably supported around a vertical axis by a base 50. The arm 40 has a main body 41 and a rotation shaft 42, the details of which will be described later. The main body 41 is formed in a substantially L shape, the tip side of the long portion is rotatably supported around a vertical axis by the base 50, and a rotation shaft 42 is provided at the tip side of the short portion. The inside of the rotation shaft 42 is formed in a hollow shape, and an internal power line may be arranged therein.

[0053] The rotation shaft 42 is a member that serves as an axis when the instrument body 30 rotates around a horizontal axis. The rotation shaft 42 is formed in a substantially cylindrical shape. The rotation shaft 42 engages with the engaging portion 31A of the housing 31 of the instrument body 30 described above and is pressed and fixed by a leaf spring 32.

[0054] As shown in FIG. 7, as described above, a groove portion 43 with which the convex portion 32D of the leaf spring 32 engages is formed on the rotation shaft 42. The groove portion 43 is formed for a predetermined angle along the rotation direction of the rotation shaft 42. With such a configuration, as described above, the rotation shaft 42 can rotate only by the predetermined angle where the groove portion 43 is formed, and the rotation angle of the instrument body 30 with respect to the arm 40 is restricted.

[0055] [Base] Once again, the base 50 will be described with reference to FIGS. 1 and 2.

[0056] The base 50 is a member that rotatably supports the arm 40 and is fixed to the ceiling surface as the mounting surface. The base 50 is made of, for example, resin or metal and is formed in a disk shape. The base 50 has a main body 51 that is fixed to the ceiling surface by a fixture such as a screw, and a cover 52 that covers the lower part of the main body 51 and rotatably supports the arm 40 around the vertical axis.

[0057] Note that an internal power supply line for supplying power to the socket 20 and a terminal block (not shown) to which an external power supply line (not shown) for supplying power from the outside is connected may be accommodated inside the base 50.

[0058] [Summary] The present disclosure will be further described by the following embodiments. Configuration 1: A light source, A socket to which the light source is attached, An instrument body that houses the socket, An arm having a rotation shaft that rotatably supports the instrument body, A base that supports the arm and is fixed to the mounting surface, Comprising: The instrument body A pressing member that presses the rotation shaft of the arm, An adjustment screw that fastens the instrument body and the pressing member and adjusts the pressing force of the pressing member by the fastening force, Having: The adjustment screw is tightened or loosened from the side where the light source is accommodated. Lighting fixture. Configuration 2: The lighting fixture according to Configuration 1, wherein the adjustment screw is loosened from an adjustment screw viewing hole that removes the light source from the socket and penetrates the socket. Lighting fixture. Configuration 3: A light source, A socket to which the light source is attached, An appliance body that houses the light source and the socket, An arm having a rotation axis that rotatably supports the appliance body, A base that supports the arm and is fixed to the surface to be attached, and the appliance body has a pressing member that presses the rotation axis of the arm, the pressing member is provided with a convex portion that protrudes toward the rotation axis, a groove portion that engages with the convex portion is formed on the rotation axis, the groove portion is formed by a predetermined angle along the rotation direction. Lighting fixture. Configuration 4: The lighting fixture according to any one of Configurations 1 to 3, wherein a cross-sectional view perpendicular to the irradiation direction of the light source and a cross-sectional view perpendicular to the irradiation direction of the appliance body are of a shape that can be fitted. Lighting fixture. Configuration 5: The lighting fixture according to any one of Configurations 1 to 4, wherein the light source has two power supply pins, the socket has two pin mounting portions to which the two power supply pins are respectively mounted, and the distance between the pin mounting portions is 25 to 40 mm. Lighting fixture. Configuration 6: The lighting fixture according to Configuration 5, wherein the distance between the pin mounting portions is 25 to 30 mm. Lighting fixture.

[0059] As described above, the present disclosure has been explained based on the embodiments. However, the present disclosure is not limited to the above embodiments. In addition, forms obtained by applying various modifications conceivable by those skilled in the art to each embodiment, and forms realized by arbitrarily combining the components and functions in each embodiment without departing from the gist of the present disclosure are also included in the present disclosure.

Explanation of Reference Numerals

[0060] 10 Light source, 11 Housing, 11A Convex portion, 11B Reduced-diameter portion, 12 Light-emitting portion, 13 Lens, 14 Power supply pin, 15 Drive circuit, 16 Capacitor, 20 Socket, 21 Housing, 21A Upper cover, 21B Lower cover, 22 Long hole, 22A Pin insertion hole, 22B Pin mounting hole, 22C Pin guiding hole, 23 Concave portion, 24 Adjusting screw viewing hole, 25 Connecting terminal, 25A Pin introduction portion, 25B Terminal portion (pin mounting portion), 25C Pin guiding portion, 30 Appliance main body, 31 Housing, 31A Engaging portion, 31B Adjusting screw hole, 31C Screw hole, 32 Leaf spring (pressing member), 32A Pressing portion, 32B Adjusting portion, 32C Fixing portion, 32D Convex portion, 33 Adjusting screw, 34 Fixing screw, 40 Arm, 41 Main body, 42 Rotating shaft, 43 Groove portion, 50 Base, 51 Main body, 52 Cover, 100 Lighting fixture

Claims

1. A light source, a socket to which the light source is attached, an appliance body that houses the socket, an arm having a rotation axis that rotatably supports the appliance body, a base that supports the arm and is fixed to a mounting surface, comprising: The appliance body has a pressing member that presses the rotation axis of the arm, and an adjustment screw that fastens the appliance body and the pressing member and adjusts the pressing force of the pressing member by the fastening force, having: The adjustment screw is tightened and loosened from the side where the light source is housed. A lighting fixture.

2. The lighting fixture according to Claim 1, wherein the adjustment screw is loosened from an adjustment screw viewing hole that removes the light source from the socket and penetrates the socket. A lighting fixture.

3. A light source, a socket to which the light source is attached, an appliance body that houses the light source and the socket, an arm having a rotation axis that rotatably supports the appliance body, a base that supports the arm and is fixed to a mounting surface, comprising: The appliance body has a pressing member that presses the rotation axis of the arm, the pressing member is provided with a convex portion that protrudes toward the rotation axis, the rotation axis is formed with a groove portion that engages with the convex portion, the groove portion is formed for a predetermined angle along the rotation direction. A lighting fixture.

4. The lighting fixture according to any one of Claims 1 to 3, wherein a cross-sectional view perpendicular to the irradiation direction of the light source and a cross-sectional view perpendicular to the irradiation direction of the appliance body are of a shape that can be fitted together. A lighting fixture.

5. The lighting fixture according to any one of Claims 1 to 3, wherein the light source has two power supply pins, the socket has two pin mounting portions to which the two power supply pins are respectively mounted, and the distance between the pin mounting portions is 25 to 40 mm. A lighting fixture.

6. The lighting fixture according to Claim 5, wherein the distance between the pin mounting portions is 25 to 30 mm. A lighting fixture.

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