Luminaire

Abstract

To provide a luminaire capable of easily adjusting the tilting of the luminaire while improving designability without greatly increasing the number of components.SOLUTION: A hanging type luminaire 1 is hung from a building material and includes: a socket 20 on which a light source 10 is mounted; a socket cover 30 having a cylindrical cylinder part 31 for covering at least part of the socket 20; an outer shell cover 40 for covering at least part of the socket cover 30; and a ring-like ring member 50. The socket cover 30 also includes a flange part 33 provided at an end part on the light source 10 side of the cylinder part 31. The outer shell cover 40 includes a first cover part 41 for covering at least part of the cylinder part 31, and a second cover part 42 for covering the light source 10, and the second cover part 42 is supported by the flange part 33 via the ring member 50.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a lighting device.

Background Art

[0002] Conventionally, a suspended lighting device suspended from a building material such as a ceiling has been known (for example, Patent Document 1). The suspended lighting device includes a socket to which a light source such as a lamp is attached, a socket cover that covers the socket, and an outer cover that is a shade and covers the socket cover.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional suspended lighting device, the outer cover (shade) is supported at a position above the socket cover. For this reason, when trying to secure a space area above the socket cover in order to improve the design of the lighting device, there is a problem that the number of parts increases significantly. Further, in the conventional suspended lighting device, there is also a problem that it is difficult to adjust the inclination of the lighting device.

[0005] The present invention has been made to solve such problems, and an object thereof is to provide a lighting device that can easily adjust the inclination of the lighting device while improving the design without significantly increasing the number of parts.

Means for Solving the Problems

[0006] In order to achieve the above object, one aspect of the lighting device according to the present invention is a suspended lighting device suspended from a building material, including a socket to which a light source is attached, a socket cover having a cylindrical tube portion that covers at least a part of the socket, an outer cover that covers at least a part of the socket cover, and a ring-shaped ring member. The socket cover further has a flange portion provided at an end portion of the tube portion on the light source side. The outer cover has a first cover portion that covers at least a part of the tube portion and a second cover portion that covers the light source. The second cover portion is supported by the flange portion via the ring member.

Advantages of the Invention

[0007] It is possible to easily adjust the inclination of the lighting device while improving the design without significantly increasing the number of parts.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below are all specific examples of the present invention. Therefore, numerical values, shapes, materials, components, arrangement positions of components, connection forms, etc. shown in the following embodiments are merely examples and are not intended to limit the present invention. Thus, among the components in the following embodiments, components not described in the independent claims indicating the highest-level concept of the present invention are described as arbitrary components.

[0010] Note that each figure is a schematic diagram and is not necessarily drawn precisely. Also, in each figure, the same reference numerals are given to substantially the same configurations, and duplicate explanations are omitted or simplified. Further, in this specification, the terms "upper" and "lower" do not necessarily refer to the upward direction (vertically upward) and downward direction (vertically downward) in an absolute spatial perception. In this specification, the ceiling side is regarded as the upper side and the floor side is regarded as the lower side. That is, the direction of the ceiling side is the upward direction and the direction of the floor side is the downward direction.

[0011] (Embodiment) The configuration of the lighting device 1 according to the embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a view showing a state in which the lighting device 1 according to the embodiment is installed on the ceiling 2. FIG. 2 is an external perspective view of the lighting device 1 according to the embodiment. FIG. 3 is an exploded perspective view of the lighting device 1 according to the embodiment. FIG. 4 is a cross-sectional view of the lighting device 1 according to the embodiment. FIG. 5 is an enlarged cross-sectional view of the region VI surrounded by the dashed line in FIG. 4.

[0012] The lighting device 1 is a pendant light, a type of suspended lighting fixture, and is suspended from the building fixtures in buildings such as houses or stores. For example, as shown in FIG. 1, the lighting device 1 is installed on the ceiling 2 and suspended from the ceiling 2. In this case, the lighting device 1 is installed on the ceiling 2 by being attached to the hanging ceiling 2a provided on the ceiling 2. The hanging ceiling 2a is a power supply unit for supplying power to the lighting device 1, and is electrically connected to a commercial power supply (system power supply) via an electric wire or the like, for example, on the back side of the ceiling 2. The lighting device 1 can receive AC power from the commercial power supply by being attached to the hanging ceiling 2a.

[0013] Note that the lighting device 1 may be installed on a duct rail installed on the ceiling 2 or the like instead of the hanging ceiling 2a. In this case, the duct rail may be of a type embedded in the ceiling 2, a type directly attached to the ceiling 2, or a type suspended from the ceiling 2. Also, the installation location where the lighting device 1 is installed is not limited to the hanging ceiling 2a and the duct rail.

[0014] As shown in FIGS. 1 to 4, the lighting device 1 includes a light source 10, a socket 20 to which the light source 10 is attached, a socket cover 30 that covers at least a part of the socket 20, an outer cover 40 that covers at least a part of the socket cover 30, a ring-shaped ring member 50, and a cord 60. The lighting device 1 is suspended from the ceiling 2 by the cord 60.

[0015] As shown in FIGS. 1 and 2, the light source 10 is covered by the outer cover 40. The light source 10 emits light of a predetermined color. The light source 10 emits, for example, white light. The light emitted by the light source 10 becomes the illumination light of the lighting device 1.

[0016] In this embodiment, the light source 10 includes an LED module composed of an LED (Light Emitting Diode). As an example, the LED module of the light source 10 is a COB (Chip On Board) type or an SMD (Surface Mount Device) type LED module. The light source 10 having the LED module is, for example, an LED lamp having a base. As an example, the light source 10 is an LED bulb having an E26 base. The LED lamp incorporates a power supply circuit. Commercial AC power is supplied to the power supply circuit via the socket 20. Note that the light source 10 may be a lamp having another type of base such as a GX53 base instead of a lamp having an E-type base.

[0017] As shown in FIGS. 2 and 4, the light source 10 is attached to the socket 20. In this embodiment, the light source 10 is detachably attached to the socket 20. That is, the light source 10 can be attached to or detached from the socket 20. For example, when the light source 10 is an LED bulb, the light source 10 can be attached to the socket 20 by screwing the base of the light source 10 into the socket 20. Also, the light source 10 can be detached from the socket 20 by rotating the light source 10 attached to the socket 20 in the reverse direction. By attaching or detaching the light source 10 to or from the socket 20, the light source 10 can be replaced.

[0018] The socket 20 has a socket function of holding the light source 10 and supplying power to the light source 10. Therefore, the socket 20 is electrically and mechanically connected to the light source 10. The socket 20 has, for example, a conductive connection portion that is electrically and mechanically connected to the light source 10 and an insulating cylindrical portion that houses the connection portion. As an example, the connection portion of the socket 20 is made of a metal material, and the cylindrical portion of the socket 20 is made of an insulating resin material. When the light source 10 is a lamp having an E-type base, the connection portion of the socket 20 has a screwing portion into which the base of the light source 10 is screwed.

[0019] As shown in FIG. 4, the socket 20 is attached to the socket cover 30 via a socket base 21 which is a support base. In the present embodiment, the socket base 21 fixed to the socket 20 is fixed to the socket cover 30. The socket base 21 is constituted by, for example, a metal plate.

[0020] As shown in FIG. 1, the socket 20 and the socket cover 30 are suspended from the ceiling 2 by a cord 60. Commercial AC power is supplied to the socket 20 by the cord 60. Thereby, commercial AC power is supplied to the light source 10 attached to the socket 20, and the light source 10 becomes in a lighting - enabled state. In this case, for example, by operating a wall switch or a remote control, the lighting and extinguishing of the light source 10 can be switched.

[0021] As shown in FIG. 4, the socket cover 30 has a cylindrical tube portion 31 that covers at least a part of the socket 20. In the present embodiment, the tube portion 31 covers the entire socket 20. That is, the socket 20 which is a charging part is housed in the tube portion 31 so that the side surface portion of the socket 20 is not exposed. Thereby, it is possible to prevent a user from touching the socket 20 which is a charging part and getting an electric shock.

[0022] Further, the tube portion 31 covers not only the socket 20 but also the socket base 21, and both the socket 20 and the socket base 21 are housed in the tube portion 31. Therefore, the entire side surface portions of the socket 20 and the socket base 21 are surrounded by the tube portion 31. In the present embodiment, the shape of the tube portion 31 is cylindrical, but it is not limited to this. The tube portion 31 may be square - cylindrical or the like.

[0023] The light - source 10 side (lower side) of the tube portion 31 is open. In the present embodiment, the edge of the tube portion 31 on the light - source 10 side is located below the edge of the socket 20 on the light - source 10 side, and the socket 20 is present at a position slightly deeper than the opening surface of the tube portion 31.

[0024] On one side, the ceiling 2 side (upper side) of the cylindrical portion 31 is closed. Specifically, the socket cover 30 has a lid portion 32 that closes the opening on the ceiling 2 side of the cylindrical portion 31. The lid portion 32 is disc-shaped, and the combined shape of the cylindrical portion 31 and the lid portion 32 is a bottomed cylindrical shape. As shown in FIG. 4, the cord 60 attached to the socket 20 is inserted through a through hole provided in the central portion of the lid portion 32 of the socket cover 30 and drawn out to the ceiling 2 side.

[0025] The cord 60 is a support cord that supports the socket 20 and is also a power cord that supplies power to the socket 20. As shown in FIG. 4, one end of the cord 60 is electrically connected to the socket 20 via the socket base 21. Also, as shown in FIG. 1, the other end of the cord 60 is electrically connected to the hook seal 2a. For example, the cord 60 and the hook seal 2a can be electrically connected by connecting a connecting fitting (such as a metal blade) of a connecting member 60a attached to the other end of the cord 60 to the hook seal 2a. Note that the connecting fitting may be covered with an insulating flange cover (not shown).

[0026] In the present embodiment, the cord 60 has flexibility. Specifically, the cord 60 can freely change its form by being wound or bent, etc., but in the state where the lighting device 1 is suspended from the ceiling 2, the cord 60 is in a straight tensioned state.

[0027] As shown in FIG. 4, the socket cover 30 further has a flange portion 33 provided at the end portion on the light source 10 side (lower side) of the cylindrical portion 31. In the present embodiment, the flange portion 33 protrudes outward from the side surface of the opening end (lower end) on the light source 10 side of the cylindrical portion 31. Specifically, the flange portion 33 is formed in a flange shape over the entire circumference of the side surface of the lower end of the cylindrical portion 31. Further, the flange portion 33 is formed in a plate shape. Specifically, the flange portion 33 is formed in an annular ring shape with a constant width and a plate shape with a constant thickness. Therefore, as shown in FIG. 5, the flange portion 33 has a first flat surface portion 33a on the ceiling 2 side (upper side) and a second flat surface portion 33b on the floor side (lower side). The main surfaces of the first flat surface portion 33a and the second flat surface portion 33b in the flange portion 33 are flat surfaces.

[0028] The cylindrical portion 31, the lid portion 32, and the flange portion 33 are integrally formed using the same material. That is, the socket cover 30 is an integrally molded product. In this case, the material constituting the socket cover 30 may be either a resin material or a metal material. When the socket cover 30 is made of a resin material, for example, a socket cover 30 having a predetermined shape can be formed by injection molding using an insulating resin material. Thus, by configuring the socket cover 30 with an insulating resin material, the socket 20, which is the charging portion, can be insulated and protected. When the socket cover 30 is made of a metal material, for example, a socket cover 30 having a predetermined shape can be formed by subjecting a metal plate such as a hot-dip galvanized steel sheet (CGCC) to press working such as deep drawing. Thus, by configuring the socket cover 30 with a metal material, the outer cover 40 can be stably supported by the socket cover 30.

[0029] As shown in FIG. 4, the socket cover 30 is covered with the outer cover 40. Specifically, the outer cover 40 covers the entire socket cover 30. The outer cover 40 constitutes the outer member of the lighting device 1. Therefore, when the user views the lighting device 1 installed on the building material, the user will see the outer cover 40. That is, the outer cover 40 constitutes the external design (appearance) of the lighting device 1.

[0030] The outer cover 40 has a first cover portion 41 and a second cover portion 42. In the present embodiment, the outer cover 40 is composed only of the first cover portion 41 and the second cover portion 42, but it is not limited thereto.

[0031] The first cover portion 41 is a cylindrical cover portion that covers at least a part of the cylindrical portion 31 of the socket cover 30. In the present embodiment, the first cover portion 41 covers more than half of the cylindrical portion 31 in the axial direction of the cylindrical portion 31. Specifically, substantially the entire cylindrical portion 31 is located within the first cover portion 41, but a part of the lower portion of the cylindrical portion 31 is located within the second cover portion 42. Therefore, the flange portion 33 provided at the lower end of the cylindrical portion 31 is also located within the second cover portion 42. The outer diameter of the flange portion 33 located inside the second cover portion 42 is larger than the inner diameter of the cylindrical first cover portion 41. For this reason, the position of the tip of the flange portion 33 is located outside the inner surface of the first cover portion 41.

[0032] The first cover portion 41 is cylindrical. Specifically, the first cover portion 41 is cylindrical, similar to the cylindrical portion 31 of the socket cover 30. The first cover portion 41 surrounds the cylindrical portion 31 with a gap. That is, the inner diameter of the first cover portion 41 is larger than the inner diameter of the cylindrical portion 31, and there is a gap between the inner peripheral surface of the first cover portion 41 and the outer peripheral surface of the cylindrical portion 31. The axis of the cylindrical first cover portion 41 is coaxial with the axis of the cylindrical cylindrical portion 31, and the interval of the gap between the first cover portion 41 and the cylindrical portion 31 is constant over the entire circumference of the first cover portion 41.

[0033] The length of the first cover portion 41 in the axial direction is longer than the length of the cylindrical portion 31 in the axial direction. Also, the edge of the first cover portion 41 on the ceiling 2 side is located on the ceiling 2 side of the edge of the cylindrical portion 31 on the ceiling 2 side (that is, the upper surface of the lid portion 32). Therefore, as shown in FIGS. 1 and 4, in the upper part of the first cover portion 41, a space region SP exists in the portion on the ceiling 2 side of the end face of the cylindrical portion 31 on the ceiling 2 side (that is, the portion on the ceiling 2 side of the lid portion 32).

[0034] Both sides of the first cover part 41 in the cylinder axis direction are open. Specifically, the ceiling 2 side (upper side) of the first cover part 41 is open so as to be uncovered. Therefore, the upper space region of the first cover part 41 communicates with the external region of the lighting device 1. The cord 60 is drawn out from the lighting device 1 through the space region above the first cover part 41. Also, the first cover part 41 is connected to the upper part of the second cover part 42, and the opening on the floor side (lower side) of the first cover part 41 communicates with the opening provided in the upper part of the second cover part 42.

[0035] The second cover part 42 is a light source cover part that covers the light source 10. In the present embodiment, the second cover part 42 covers the entire light source 10, and the second cover part 42 surrounds the entire light source 10. That is, the light source 10 is housed in the second cover part 42.

[0036] In the present embodiment, the second cover part 42 is substantially spherical. Substantially spherical does not mean only the case where the whole is spherical, but also includes a shape in which a part of the sphere is missing (that is, a part of the sphere) like the second cover part 42 shown in FIGS. 1 to 4. For example, a hemisphere is also substantially spherical. Also, the sphere constituting the substantially spherical shape is not limited to a perfect sphere, and may be slightly deformed from a perfect sphere as long as it looks spherical as a whole. For example, an ellipsoid is a sphere constituting the substantially spherical shape.

[0037] Note that the shape of the second cover part 42 is not limited to substantially spherical. For example, the shape of the second cover part 42 may be other shapes such as a bowl shape, a square tube shape, a cylindrical shape, a frustum of a cone shape, a frustum of a triangular pyramid shape, or a frustum of a quadrangular pyramid shape.

[0038] The first cover part 41 and the second cover part 42 are integrally formed of the same material. That is, the outer cover 40 is an integrally molded product. The outer cover 40 is made of, for example, an organic material such as a resin material, an inorganic material such as a glass material, or a metal material.

[0039] The outer cover 40 may or may not have translucency. In the present embodiment, the outer cover 40 has translucency. That is, both the first cover portion 41 and the second cover portion 42 have translucency. Since the outer cover 40 has translucency, the outer cover 40 can transmit the light from the light source 10. The translucent outer cover 40 is made of a translucent material such as a translucent resin material like acrylic or polycarbonate, a glass material, or a translucent ceramic material.

[0040] Specifically, the outer cover 40 in the present embodiment is a transparent cover. That is, both the first cover portion 41 and the second cover portion 42 are transparent. In this case, the outer cover 40 is preferably a skeleton cover with a high transmittance such that internal components such as the light source 10 and the socket cover 30 can be seen through. Thereby, the design property of the lighting device 1 can be improved. The transparent outer cover 40 can be formed using a transparent resin material such as acrylic or polycarbonate, a transparent glass material, or a transparent ceramic material. In the present embodiment, the transparent outer cover 40 is a glass bulb made of a glass material. By making the outer cover 40 transparent, the light emitted from the light source 10 during lighting directly passes through the second cover portion 42 of the outer cover 40 and is irradiated outside the lighting device 1 as the illumination light of the lighting device 1. Also, since the internal components can be seen through the transparent outer cover 40, it is preferable to match the appearance colors (tints) or use analogous colors for the internal components such as the light source 10 and the socket cover 30. Thereby, the design property of the lighting device 1 can be further improved.

[0041] Alternatively, the outer cover 40 may be a translucent diffusing cover that has light transmissivity and diffusivity instead of a transparent cover. That is, each of the first cover portion 41 and the second cover portion 42 may have light transmissivity and diffusivity. In this case, the outer cover 40 becomes milky white, and the internal components (such as the light source 10 and the socket cover 30) covered by the outer cover 40 become invisible from the outside of the outer cover 40. The outer cover 40, which is a diffusing cover, can be formed using a light-transmissive resin material such as acrylic or polycarbonate, or a glass material. For example, the outer cover 40 can be a milky white diffusing cover in which light diffusing materials such as silica particles are dispersed inside a light-transmissive resin material. By making the outer cover 40 a diffusing cover, the light emitted from the light source 10 during lighting diffuses (scatters) in the second cover portion 42 of the outer cover 40 and then passes through the second cover portion 42, and is irradiated outside the lighting device 1 as the illumination light of the lighting device 1. That is, when the light of the light source 10 is incident, the second cover portion 42 appears to emit light, and the user feels as if the second cover portion 42 is emitting light. Also, by giving the outer cover 40 diffusivity, a part of the light of the light source 10 incident on the second cover portion 42 is guided from the second cover portion 42 to the first cover portion 41, and light is also irradiated outside from the first cover portion 41. That is, light can be irradiated outside from the entire outer cover 40.

[0042] Note that the outer cover 40 having light transmissivity and diffusivity may be configured by forming a milky white light diffusing film containing a light diffusing material or the like on the surface (inner surface or outer surface) of a transparent member, instead of dispersing a light diffusing material inside, or may be configured to have light diffusivity by subjecting a transparent resin cover or a transparent glass cover to a diffusion process without using a light diffusing material. For example, by performing a surface treatment such as embossing or printing a dot pattern on the surface of a transparent resin cover or a transparent glass cover, it may be used as the outer cover 40 having light transmissivity and diffusivity.

[0043] In addition, the outer cover 40 may not have translucency. In this case, the outer cover 40 can be a shade having light-shielding properties. As the outer cover 40 having light-shielding properties, a reflective cover having a high reflectance on the inner surface can be used. The outer cover 40 having light-reflecting properties may be entirely composed of a white resin material or a ceramic material, or may be composed of a metal material, or may be a cover formed by molding a resin material, a metal material, or the like into a predetermined shape and having a light-reflecting film formed on the inner surface thereof.

[0044] Thus, since the outer cover 40 has transparency, diffusibility, or reflectivity, the light from the light source 10 can be refracted, diffused, or reflected, so that the light distribution of the light emitted from the outer cover 40 can be controlled. That is, the light distribution of the illumination light of the lighting device 1 can be controlled.

[0045] As shown in FIGS. 4 and 5, the outer cover 40 is supported by the socket cover 30. Specifically, the outer cover 40 is supported by the socket cover 30 by the second cover portion 42 of the outer cover 40 being supported by the flange portion 33 of the socket cover 30 via the ring member 50. That is, the ring member 50 is located between the second cover portion 42 and the flange portion 33. More specifically, the second cover portion 42 of the outer cover 40 is supported by the ring member 50 supported by the flange portion 33 of the socket cover 30. In the present embodiment, the ring member 50 is sandwiched between the second cover portion 42 and the flange portion 33. Specifically, in a state where the lighting device 1 is suspended from the ceiling 2, the ring member 50 is pressed against the flange portion 33 by the weight of the outer cover 40. Therefore, the ring member 50 is sandwiched between the second cover portion 42 and the flange portion 33 by receiving the pressing force from both the flange portion 33 of the socket cover 30 suspended by the cord 60 and the second cover portion 42.

[0046] Also, in the present embodiment, although the ring member 50 is in contact with both the outer cover 40 and the socket cover 30, it is not fixed to either the outer cover 40 or the socket cover 30. That is, the outer cover 40 and the socket cover 30 are not fixed by fixing members such as screws or adhesives and are in a state where they can be moved by applying an external force. Therefore, the socket cover 30 freely supports the outer cover 40.

[0047] The ring member 50 is a holding member for holding the outer cover 40. Also, the ring member 50 is a solid ring used for fixing the position of the outer cover 40.

[0048] As shown in FIG. 6, the ring member 50 includes a ring-shaped elastic member 51 and a ring-shaped rigid member 52 having higher rigidity than the elastic member 51. Specifically, both the elastic member 51 and the rigid member 52 are annular. FIG. 6 is an exploded perspective view of the ring member 50.

[0049] The elastic member 51 is a member having an elastic force. For example, when an external force is applied to the elastic member 51, it elastically deforms, and when this external force is released, it has the property of returning to its original state by the elastic restoring force. As the elastic member 51, for example, an elastomer can be used. Specifically, as the material of the elastic member 51, silicon rubber or urethane rubber can be used. Note that the elastic member 51 is not limited to a solid molded product and may be a foamed molded product such as CR sponge.

[0050] The rigid member 52 can be made of a metal material or a hard resin material. In the present embodiment, the rigid member 52 is annular and is composed of a metal plate with a constant thickness. Therefore, as shown in FIG. 5, the rigid member 52 has a first flat surface portion 52a on the ceiling 2 side (upper side) and a second flat surface portion 52b on the floor side (lower side). The main surfaces of the first flat surface portion 52a and the second flat surface portion 52b of the rigid member 52 are flat surfaces. As the metal plate constituting the rigid member 52, for example, a steel plate such as a hot-dip galvanized steel sheet (CGCC), or an aluminum plate made of an aluminum alloy can be used.

[0051] As shown in FIGS. 4 and 5, the elastic member 51 is provided outside the rigid member 52. Therefore, with respect to the ring member 50, the elastic member 51 is in contact with the second cover portion 42. As a result, when the ring member 50 is sandwiched between the flange portion 33 and the second cover portion 42, the elastic member 51 elastically deforms. Thus, even if the ring member 50 presses against the second cover portion 42, it is possible to prevent the inner surface of the second cover portion 42 from being damaged by the ring member 50. In this way, the elastic member 51 functions as a cushioning material and has a crushing allowance that is crushed when the ring member 50 presses against the second cover portion 42.

[0052] Also, the elastic member 51 holds the rigid member 52. Specifically, as shown in FIG. 5, the elastic member 51 has a U-shaped cross-sectional shape and has a concave portion 51a. The concave portion 51a is recessed toward the outer side in the radial direction of the ring-shaped elastic member 51. The rigid member 52, which is an annular metal plate, is held by the elastic member 51 when the outer peripheral portion of the rigid member 52 is inserted into the concave portion 51a of the elastic member 51.

[0053] The ring member 50 configured as described above is in surface contact with the flange portion 33 of the socket cover 30. Specifically, as shown in FIG. 5, the first flat portion 52a of the rigid member 52 and the second flat portion 33b of the flange portion 33 are in surface contact without being fixed. Therefore, the socket cover 30 can slide horizontally along the first flat portion 52a (or the second flat portion 33b of the flange portion 33) of the rigid member 52. That is, the second flat portion 33b of the flange portion 33 slides along the first flat portion 52a of the rigid member 52.

[0054] Also, at this time, as shown in FIG. 5, since the elastic member 51 of the ring member 50 has a stepped portion 51b, when the socket cover 30 slides greatly, the flange portion 33 of the socket cover 30 comes into contact with the end face of the stepped portion 51b. Thereby, the amount of movement of the socket cover 30 can be restricted. Thus, the elastic member 51 has the stepped portion 51b as a stopper portion for restricting the movement of the flange portion 33. Note that the stepped portion 51 has a step with respect to the second flat portion 52b of the rigid member 52.

[0055] As described above, in the lighting device 1 according to the present embodiment, as shown in FIG. 4, the socket cover 30 has a cylindrical portion 31 that covers at least a part of the socket 20, and a flange portion 33 provided at the end of the cylindrical portion 31 on the light source 10 side. Further, an outer cover 40 that covers at least a part of the socket cover 30 has a first cover portion 41 that covers at least a part of the cylindrical portion 31 and a second cover portion 42 that covers the light source 10. And the second cover portion 42 of the outer cover 40 is supported by the flange portion 33 of the socket cover 30 via the ring member 50.

[0056] Regarding the lighting device 1 configured as described above, the support position of the outer cover 40 (shade) is different from that of a conventional hanging-type lighting device. Specifically, in a conventional hanging-type lighting device, the outer cover was supported at a position above the socket cover, whereas in the lighting device 1 of the present embodiment, the second cover portion 42 is supported by the flange portion 33 at the end (lower end) on the light source 10 side of the socket cover 30, and the outer cover 40 is supported at a position below the socket cover 30. With this configuration, a space region SP can be secured at the position on the ceiling 2 side of the cylindrical portion 31 within the first cover portion 41 of the outer cover 40 without increasing the number of parts. Therefore, the design property of the lighting device 1 when it is turned off can be improved without increasing the number of parts.

[0057] Moreover, in the lighting device 1 of the present embodiment, since the second cover portion 42 of the outer cover 40 is supported by the flange portion 33 of the socket cover 30, even if the outer cover 40 is tilted, the tilt of the outer cover 40 can be easily adjusted. That is, the tilt of the lighting device 1 can be easily adjusted. In particular, in the lighting device 1 of the present embodiment, the second cover portion 42 is supported by the flange portion 33 via the ring member 50, and the socket cover 30 is not in direct contact with the outer cover 40. Thereby, the tilt of the outer cover 40 can be adjusted without damaging the outer cover 40 (second cover portion 42).

[0058] As described above, according to the lighting device 1 of the present embodiment, although one ring member 50 is added as a new part, the design property can be improved without significantly increasing the number of parts, and the tilt of the lighting device 1 can be easily adjusted. In other words, just by adding one ring member 50, it is possible to easily achieve both an improvement in design property and adjustment of the tilt of the lighting device 1.

[0059] Moreover, since the second cover portion 42 is structured to be supported by the flange portion 33 via the ring member 50, the outer cover 40 can be supported by the socket cover 30 without particularly providing a support structure for the second cover portion 42.

[0060] With this configuration, the degree of freedom in the shape of the second cover portion 42 that covers the light source 10 can be improved. For example, even if the shape of the second cover portion 42 is made substantially spherical as in the present embodiment, the second cover portion 42 can be easily supported by the collar portion 33 by the supporting ring member 50. In this way, by simply interposing the ring member 50 between the second cover portion 42 and the collar portion 33, the restrictions on the shape of the second cover portion 42 can be eliminated. Therefore, the design property of the lighting device 1 can be easily improved.

[0061] Further, in the lighting device 1 according to the present embodiment, the flat surface portion of the ring member 50 and the flat surface portion of the collar portion 33 are in surface contact without being fixed. Specifically, as shown in FIG. 5, the second flat surface portion 52b of the rigid member 52 in the ring member 50 and the first flat surface portion 33a of the collar portion 33 are in surface contact.

[0062] In this way, in the present embodiment, the flat surface portion of the ring member 50 (the second flat surface portion 52b of the rigid member 52) and the flat surface portion of the collar portion 33 (the first flat surface portion 33a) are in surface contact, so that the second cover portion 42 is supported by the collar portion 33 via the ring member 50. With this configuration, the second cover portion 42 can be stably supported.

[0063] Moreover, the flat surface portion of the ring member 50 (the second flat surface portion 52b of the rigid member 52) and the flat surface portion of the collar portion 33 (the first flat surface portion 33a) are not fixed. With this configuration, the second cover portion 42 can be slid horizontally along the flat surface portion of the collar portion 33 together with the ring member 50. Thereby, the inclination of the second cover portion 42 can be easily adjusted.

[0064] Further, in the lighting device 1 according to the present embodiment, the ring member 50 includes a ring-shaped elastic member 51 and a ring-shaped rigid member 52 having higher rigidity than the elastic member 51, and the elastic member 51 is provided outside the rigid member 52.

[0065] With this configuration, when the second cover portion 42 of the outer cover 40 is supported by the flange portion 33 of the socket cover 30 via the ring member 50, the elastic member 51 of the ring member 50 abuts against the second cover portion 42 and elastically deforms. Therefore, even if the ring member 50 is interposed between the second cover portion 42 and the flange portion 33, it is possible to prevent the ring member 50 from scratching the inner surface of the second cover portion 42. That is, the ring member 50 stably supports the second cover portion 42 by the hard rigid member 52 without damaging the second cover portion 42 by the elastic member 51.

[0066] Moreover, the ring member 50 has a second flat portion 52b as a flat portion that is in surface contact with the flat portion of the flange portion 33 as the rigid member 52.

[0067] In this way, by providing a flat portion that is in surface contact with the flat portion of the flange portion 33 on the rigid member 52 having high rigidity, the flange portion 33 can support the second cover portion 42 more stably via the ring member 50.

[0068] Also, in the lighting device 1 according to the present embodiment, the elastic member 51 of the ring member 50 has a stopper portion that restricts the movement of the flange portion 33.

[0069] With this configuration, when adjusting the inclination of the lighting device 1, when the outer cover 40 is moved together with the ring member 50 or the socket cover 30 is moved, and when the socket cover 30 moves greatly with respect to the ring member 50, the stopper portion of the ring member 50 can restrict the movement of the socket cover 30. Thereby, the inclination of the lighting device 1 can be easily adjusted.

[0070] Also, in the lighting device 1 according to the present embodiment, the ring member 50 is not fixed to either the outer cover 40 or the socket cover 30.

[0071] With this configuration, the ring member 50 can be held by being sandwiched between the second cover portion 42 and the flange portion 33. Thereby, the cost for fixing the ring member 50 can be suppressed.

[0072] Also, in the lighting device 1 according to the present embodiment, the first cover portion 41 and the second cover portion 42 are transparent. Specifically, the entire outer cover 40 is transparent.

[0073] With this configuration, since the internal components such as the light source 10 and the socket cover 30 arranged inside the outer cover 40 can be seen through, the lighting device 1 can be made conspicuous. That is, it is possible to realize a lighting device 1 with excellent design having a presence as a skeleton type lighting.

[0074] Note that the first cover portion 41 and the second cover portion 42 may not be transparent but may have translucency and diffusibility. With this configuration, the internal components such as the light source 10 and the socket cover 30 arranged inside the outer cover 40 can be hidden so as not to be seen from the outside of the outer cover 40. Thereby, since the presence of the lighting device 1 as a lighting fixture in the lighting space can be reduced, the design of the entire lighting space can be improved.

[0075] Also, in the lighting device 1 according to the present embodiment, the first cover portion 41 and the second cover portion 42 are integrally formed of the same material. Specifically, the entire outer cover 40 is integrally formed of the same material.

[0076] With this configuration, not only can the manufacturing cost of the outer cover 40 be suppressed, but also by making the first cover portion 41 and the second cover portion 42 having different shapes into an integral body, the design of the outer cover 40 which is the outer housing of the lighting device 1 can be improved. Thereby, a lighting device 1 with excellent design can be realized.

[0077] (Modification example) As described above, the lighting device according to the present invention has been described based on the embodiments, but the present invention is not limited to the above embodiments.

[0078] For example, in the above embodiment, the lighting device 1 includes the light source 10, but it is not limited thereto. Specifically, the lighting device 1 may not include the light source 10.

[0079] Also, in the above embodiment, the ring member 50 is not fixed to either the outer cover 40 or the socket cover 30, but it is not limited thereto. For example, the ring member 50 may be fixed to the inner surface of the second cover portion 42 of the outer cover 40. However, also in this case, the ring member 50 is not fixed to the socket cover 30. Thereby, the ring member 50 is integrated with the outer cover 40, but the socket cover 30 can freely support the outer cover 40 via the ring member 50. In this way, by fixing the ring member 50 to the second cover portion 42, the inclination of the lighting device 1 can be easily adjusted. When fixing the ring member 50 and the second cover portion 42, the elastic member 51 of the ring member 50 and the second cover portion 42 can be fixed with an adhesive or the like.

[0080] Also, in the above embodiment, the light source 10 uses an LED, but it is not limited thereto. For example, the light source 10 may be a lamp using a semiconductor laser or organic EL (Electro Luminescence), or may be a fluorescent lamp or an incandescent bulb. Note that the light source 10 may not be replaceable or may not be able to be replaced.

[0081] In addition, forms obtained by applying various modifications that can be conceived by those skilled in the art to each of the above embodiments, and forms realized by arbitrarily combining the components and functions in each of the above embodiments without departing from the spirit of the present invention are also included in the present invention. Also, combinations of one or more components in each of the plurality of claims described in the claims of the present application at the time of filing are also included in the present invention. Further, when the dependent claims described in the claims of the present application at the time of filing are made into multi-claims or multi-multi-claims so as to cite any plurality of claims (for example, when made into multi-claims or multi-multi-claims so as to cite all the upper claims for each claim), all forms obtained by combinations of all the claims included in the multi-claims or multi-multi-claims are also included in the present invention.

Explanation of Reference Numerals

[0082] 1 Lighting device 10 Light source 20 Socket 30 Socket cover 33 Flange portion 33a First flat portion 33b Second flat portion 40 Outer cover 41 First cover portion 42 Second cover portion 50 Ring member 51 Elastic member 51b Step portion (stopper portion) 52 Rigid member 52a First flat portion 52b Second flat portion

Claims

1. A suspended lighting device suspended from a building material, comprising: a socket to which a light source is attached; a socket cover having a cylindrical portion that covers at least a part of the socket; an outer cover that covers at least a part of the socket cover; a ring-shaped ring member; The socket cover further has a flange portion provided at an end portion of the cylindrical portion on the light source side; The outer cover has a first cover portion that covers at least a part of the cylindrical portion and a second cover portion that covers the light source; The second cover portion is supported by the flange portion via the ring member; A lighting device.

2. The ring member has a flat portion; The flange portion has a flat portion; The flat portion of the ring member and the flat portion of the flange portion are in surface contact without being fixed; The lighting device according to claim 1.

3. The ring member has a ring-shaped elastic member and a ring-shaped rigid member having higher rigidity than the elastic member; The elastic member is provided outside the rigid member; The rigid member has the flat portion of the ring member; The lighting device according to claim 2.

4. The elastic member has a stopper portion that restricts the movement of the flange portion; The lighting device according to claim 3.

5. The ring member is not fixed to either the outer cover or the socket cover; The lighting device according to any one of claims 1 to 4.

6. The ring member is fixed to the inner surface of the second cover portion; The lighting device according to any one of claims 1 to 4.

7. The first cover portion and the second cover portion are transparent; The lighting device according to any one of claims 1 to 4.

8. The first cover portion and the second cover portion have translucency and diffusibility; The lighting device according to any one of claims 1 to 4.

9. The second cover portion is substantially spherical; The lighting device according to any one of claims 1 to 4.

10. The first cover portion and the second cover portion are integrally formed of the same material; The lighting device according to any one of claims 1 to 4.

11. A light source is attached to the socket; The lighting device according to any one of claims 1 to 4.

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