Lighting device

Abstract

To provide a lighting device capable of suppressing occurrence of a shadow on a reflector by a receiving tool, even when using the receiving tool for supporting a shade.SOLUTION: A lighting device 1 comprises a socket 20 to which a light source 10 is attached, a shade 30 that covers the light source 10, a reflector 70 that is located above the socket 20 and reflects light from the light source 10, and a receiving tool 80 fixed to the reflector 70. The shade 30 has a second opening 30b through which light from the light source 10 passes. The receiving tool 80 has a shade support part 81 that covers at least a part of a second opening part 30b and supports the shade 30. The shade support part 81 is translucent.SELECTED DRAWING: Figure 1

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, and a shade that covers the light source.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] As one of the suspended lighting devices, an upward reflection type lighting device has been proposed, which has a structure in which a shade provided with an opening on the ceiling side is supported by a receiver and a reflector (reflector) is arranged on the ceiling side of the shade. In this lighting device, the receiver is composed of a metal plate, and has a ring-shaped support portion that supports the end portion of the opening on the ceiling side of the shade, a ring-shaped attachment portion that is attached to the reflector, and a plurality of connecting portions that connect the support portion and the attachment portion so as to bridge between the support portion and the attachment portion.

[0005] However, in the upward reflection type lighting device using a receiver having such a shape, since the connecting portion of the receiver is provided so as to straddle the opening on the ceiling side of the shade, a part of the light emitted from the light source and directed toward the reflector is blocked by the connecting portion of the receiving portion when passing through the opening on the ceiling side of the shade. As a result, a shadow due to the connecting portion of the receiving portion appears on the reflecting surface of the reflector, and the design property of the lighting device during lighting is deteriorated.

[0006] In particular, when the lighting device is made smaller in diameter for miniaturization, the support portion of the socket and the reflecting surface of the reflector come closer to each other, so that the shadow caused by the connecting portion of the socket appears dark on the reflecting surface of the reflector. As a result, the design quality of the lighting device is further reduced.

[0007] The present invention has been made to solve such problems, and an object thereof is to provide a lighting device capable of suppressing the occurrence of a shadow on the reflector by the socket even when a socket for supporting a shade is used.

Means for Solving the Problems

[0008] To achieve the above object, one aspect of a lighting device according to the present invention includes a socket to which a light source is attached, a shade that covers the light source, a reflector that is located above the socket and reflects light from the light source, and a socket holder fixed to the reflector. The shade has an opening through which light from the light source passes, the socket holder has a shade support portion that covers at least a part of the opening and supports the shade, and the shade support portion has translucency.

Effects of the Invention

[0009] Even when a socket holder for supporting a shade is used, it is possible to suppress the occurrence of a shadow on the reflector by the socket holder.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each of the embodiments described below shows a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions of the components, connection forms, etc. shown in the following embodiments are merely examples and are not intended to limit the present invention. Therefore, among the components in the following embodiments, the components not described in the independent claims indicating the highest concept of the present invention are described as optional components.

[0012] 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 overlapping 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 the downward direction (vertically downward) in an absolute spatial recognition. 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.

[0013] (Embodiment) The configuration of the lighting device 1 according to the embodiment will be described with reference to FIGS. 1 to 6. FIG. 1 is a cross-sectional view showing a state where 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 as viewed from the ceiling 2 side. FIG. 3 is an external perspective view of the lighting device 1 according to the embodiment as viewed from the floor side. FIG. 4 is an exploded perspective view of the lighting device 1 according to the embodiment. FIGS. 5 and 6 are perspective views of the receiver 80 used in the lighting device 1 according to the embodiment. FIG. 5 is a perspective view of the receiver 80 as viewed from above, and FIG. 6 is a perspective view of the receiver 80 as viewed from below.

[0014] The lighting device 1 is a pendant-type lighting fixture called a pendant light, and is suspended from a building material in a building such as a house or a store. For example, as shown in FIG. 1, the lighting device 1 is suspended from the ceiling 2 which is a building material. 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.

[0015] Note that the lighting device 1 may be installed on a duct rail installed on the ceiling or the like instead of the hanging ceiling 2a. In this case, the duct rail may be of a type embedded in the ceiling, a type directly attached to the ceiling, or a type suspended from the ceiling. Further, the installation location where the lighting device 1 is installed is not limited to the hanging ceiling 2a and the duct rail.

[0016] As shown in FIGS. 1 to 4, the pendant-type lighting device 1 includes a light source 10, a socket 20 to which the light source 10 is attached, a shade 30 that covers the light source 10, a support plate 40 that supports the socket 20, a socket cover 50 that covers the socket 20, and a cord 60. The lighting device 1 is suspended from the ceiling 2 by the cord 60.

[0017] The lighting device 1 in this embodiment is an upward reflection type lighting fixture, and further includes a reflector 70 that is located above the socket 20 and reflects the light from the light source 10, and a receiver 80 that supports the shade 30. The receiver 80 is fixed to the reflector 70.

[0018] As shown in FIGS. 1 and 3, the light source 10 is covered by the shade 30. The light source 10 irradiates light of a predetermined color. The light source 10 irradiates, for example, white light. The light irradiated by the light source 10 becomes the illumination light of the lighting device 1.

[0019] In this embodiment, the light source 10 has 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 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 lamp having a GX53 base.

[0020] Specifically, the light source 10 is a lamp having a flat and thin structure with an overall disk-like or flat shape. As shown in FIG. 1, it has a housing 10a, a light emitting portion 10b supported by the housing 10a, a light transmissive cover 10c that covers the light emitting portion 10b, a pair of power supply pins 10d that receive power for causing the light emitting portion 10b to emit light, and a base 10e. In this embodiment, the base 10e is a part of the housing 10a.

[0021] A power supply circuit (not shown) for driving the light emitting portion 10b is housed in the housing 10a. The power supply circuit converts the AC power (for example, commercial AC power of AC100V) received by the pair of power supply pins 10d from the socket 20 into DC power, and supplies the DC power to the light emitting portion 10b.

[0022] The light emitting part 10b emits, for example, white light. In this case, the light source 10 irradiates white light as illumination light. The light emitting part 10b is composed of LEDs. As an example, the light emitting part 10b has a substrate and one or more LED elements mounted on the substrate.

[0023] The light transmissive cover 10c is a light transmissive member having light transmissivity. Therefore, the light of the light emitting part 10b incident on the inner surface of the light transmissive cover 10c passes through the light transmissive cover 10c and is taken out to the outside of the light transmissive cover 10c. As the material of the light transmissive cover 10c, a light transmissive resin material such as acrylic or polycarbonate, or a light transmissive material such as a glass material can be used. Note that the light transmissive cover 10c is a diffusing cover having light diffusing properties, but may be a transparent cover having no light diffusing properties.

[0024] The pair of power supply pins 10d are conductive pins, and receive power for causing the light emitting part 10b to emit light from outside the light source 10. For example, the pair of power supply pins 10d receive AC power from the socket 20. The pair of power supply pins 10d and the drive circuit are electrically connected by a lead wire or the like. Also, the pair of power supply pins 10d are connection pins for connecting the light source 10 to the socket 20. Each power supply pin 10d is electrically and mechanically connected to the socket 20. Also, when the power supply pin 10d is connected to the socket 20, the light source 10 is held by the socket 20. Note that the pair of power supply pins 10d may be a part of the base 10e.

[0025] The base 10e is, for example, a GX53 type base. Therefore, the base 10e has a bottomed cylindrical protruding part 10f. The protruding part 10f is provided on the surface of the housing 10a opposite to the light transmissive cover 10c. The protruding part 10f constitutes a part of the base 10e.

[0026] As shown in FIG. 1, the light source 10 is attached to the socket 20. For example, when the lighting device 1 is installed on the ceiling 2, the light source 10 is attached to the socket 20 such that the light transmissive cover 10c faces the floor side (that is, the pair of power supply pins 10d face the ceiling 2 side).

[0027] 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 removed from the socket 20. For example, when the light source 10 is an LED lamp having a GX53 base, the light source 10 can be attached to the socket 20 by horizontally rotating the light source 10 within a plane parallel to the ceiling surface. Specifically, by gripping the light-transmitting cover 10c of the light source 10 by hand and inserting the power supply pin 10d of the light source 10 into the pin receiving hole 21a of the socket 20, and rotating the light source 10 clockwise, the light source 10 can be attached to the socket 20. On the other hand, when removing the light source 10 from the socket 20, the light source 10 can be removed from the socket 20 by rotating the light source 10 mounted on the socket 20 counterclockwise. By attaching or removing the light source 10 to or from the socket 20, the light source 10 can be replaced.

[0028] 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. Specifically, the socket 20 has a socket function corresponding to a GX53 type base. Commercial AC power is supplied to the socket 20 by the cord 60. Thereby, commercial AC power is supplied to the light source 10 mounted on the socket 20, and the light source 10 is in a lit 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.

[0029] The socket 20 has a socket body portion 21 made of an insulating resin material and a pair of connection terminals (not shown) housed in the socket body portion 21. As shown in FIG. 1, the socket body portion 21 is provided with a pair of pin receiving holes 21a into which a pair of power supply pins 10d of the light source 10 are locked. The pair of pin receiving holes 21a corresponds one-to-one with the pair of power supply pins 10d of the light source 10. The pair of connection terminals housed in the socket body portion 21 are electrically connected to the cord 60. Also, the pair of connection terminals housed in the socket body portion 21 are connected to the power supply pins 10d of the light source 10 inserted into the pin receiving holes 21a.

[0030] As shown in FIGS. 1 and 3, the light source 10 and the socket 20 are covered by a shade 30. The shade 30 is an outer cover that constitutes an outer member of the lighting device 1. Therefore, when a user views the lighting device 1 installed on the ceiling 2, the user will see the shade 30. That is, the shade 30 constitutes the external design (design) of the lighting device 1.

[0031] The shade 30 has two openings, a first opening 30a and a second opening 30b, as openings through which light from the light source 10 passes. The first opening 30a is provided in the lower portion of the shade 30 and opens toward the floor side. The second opening 30b is provided in the upper portion of the shade 30 and opens toward the ceiling 2 side. In the present embodiment, the first opening 30a is provided at the lower end of the shade 30, and the second opening 30b is provided at the upper end of the shade 30.

[0032] The shade 30 has a cylindrical shade body 31 and a receiver contact portion 32 that contacts the receiver 80. The first opening 30a is an opening on the lower side (floor side) of the shade body 31. The second opening 30b is provided in the receiver contact portion 32. The first opening 30a and the second opening 30b are circular openings. In the present embodiment, the opening diameter of the first opening 30a is larger than the opening diameter of the second opening 30b.

[0033] The save body 31 is cylindrical. In the present embodiment, the save body 31 is formed such that the inner diameter and the outer diameter gradually increase from the ceiling 2 side toward the floor side. That is, the outer shape of the save body 31 is frustum-shaped. Note that the shape of the save body 31 is not limited to a cylindrical shape. For example, the shape of the save body 31 may be rectangular tube-shaped, or may be a substantially spherical shape such as a bowl shape.

[0034] The receiver contact portion 32 is provided at the upper (ceiling 2 side) end of the save body 31. The receiver contact portion 32 is a projecting portion that projects inward from the opening end of the save body 31. That is, the receiver contact portion 32 is formed so as to reduce the opening diameter of the upper opening of the save body 31. In the present embodiment, the receiver contact portion 32 is an annular plate portion having a constant thickness and width. The save body 31 and the receiver contact portion 32 are formed such that the cross-sectional shape is L-shaped. Note that the thicknesses of the save body 31 and the receiver contact portion 32 are the same, but are not limited thereto.

[0035] The save 30 has light reflectivity. Specifically, the save 30 is a reflective cover having a high reflectivity inner surface. The save 30 having light reflectivity may be made of a metal material, or the entire save 30 may be made of a white resin material or a ceramic material, or may be one in which a light reflection film is formed on the inner surface of a cover molded into a predetermined shape using a resin material, a metal material, or the like. Note that the save body 31 and the receiver contact portion 32 are integrally formed of the same material. That is, the save 30 is an integrally molded product. For example, when the save 30 is made of a metal material, the save 30 having the save body 31 and the receiver contact portion 32 can be formed by pressing a metal plate.

[0036] The save 30 covers not only the light source 10 and the socket 20, but also the support plate 40 and the socket cover 50.

[0037] The support plate 40 is a socket base that supports the socket 20. The socket 20 and the support plate 40 are fixed. The support plate 40 is constituted by, for example, a metal plate. The support plate 40 is located above the socket 20.

[0038] The support plate 40 is fixed to the socket cover 50. Therefore, the socket 20 is attached to the socket cover 50 via the support plate 40. The support plate 40 has a support plate main body 41 and an attachment portion 42 attached to the socket cover 50. The support plate main body 41 faces the base 10e of the light source 10. An insertion hole through which the cord 60 is inserted is provided in the support plate main body 41. The attachment portion 42 is formed in a flange shape so as to protrude outward from the end of the support plate main body 41.

[0039] The socket cover 50 covers the socket 20 and the support plate 40. The socket cover 50 has a cylindrical cover main body 51 that covers the side portions of the socket 20 and the support plate 40. In the present embodiment, the cover main body 51 covers the entire socket 20 and the entire support plate 40. That is, the socket 20 is housed in the cover main body 51 so that the side surface portion of the socket 20 is not exposed. Thereby, it is possible to prevent the charging portion in the socket 20 and the cord 60 from being exposed and the user from touching the charging portion and getting an electric shock. In the present embodiment, the shape of the cover main body 51 is cylindrical, but it is not limited thereto. The shape of the cover main body 51 may be a rectangular tubular shape or the like.

[0040] The light source 10 side (lower side) of the cover main body 51 is open. In the present embodiment, the edge of the cover main body 51 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 cover main body 51.

[0041] On one hand, the ceiling 2 side (upper side) of the cover body 51 is closed. Specifically, the socket cover 50 has a lid portion 52 that closes the opening on the ceiling 2 side of the cover body 51. The lid portion 52 is disc-shaped, and the combined shape of the cover body 51 and the lid portion 52 is a bottomed cylindrical shape. As shown in FIG. 1, the cord 60 is inserted through a through-hole provided in the central portion of the lid portion 52 of the socket cover 50.

[0042] The cover body 51 and the lid portion 52 are integrally formed using the same material. That is, the socket cover 50 is an integrally molded product. In this case, the material constituting the socket cover 50 may be either a resin material or a metal material. When the socket cover 50 is made of a resin material, for example, a socket cover 50 having a predetermined shape can be formed by injection molding using an insulating resin material. Thus, by configuring the socket cover 50 with an insulating resin material, the socket 20, which is the charging part, can be insulated and protected. Also, when the socket cover 50 is made of a metal material, for example, a socket cover 50 having a predetermined shape can be formed by subjecting a metal plate to press working such as deep drawing. Thus, by configuring the socket cover 50 with a metal material, the socket cover 50 can stably support the receiver 80, the reflector 70, etc.

[0043] Note that in this embodiment, the socket cover 50 is made of an insulating resin material. Specifically, the socket cover 50 is formed using ASA (acrylonitrile styrene acrylate) resin.

[0044] A cord 60 is fixed to the socket cover 50. The socket cover 50 is supported by the cord 60. That is, the socket cover 50 is suspended from the ceiling 2 by the cord 60. Thus, the cord 60 is a support cord that supports the socket cover 50. Note that a support plate 40, a reflector 70, and a receiver 80 are fixed to the socket cover 50. Therefore, the support plate 40, the reflector 70, and the receiver 80 are also suspended from the ceiling 2 by the cord 60 via the socket cover 50.

[0045] Also, the cord 60 has flexibility. Specifically, the cord 60 can be freely deformed 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 and taut state.

[0046] Also, the cord 60 not only functions as a support cord but also functions as a power cord that supplies power to the socket 20. One end of the cord 60 is electrically connected to the socket 20, and the other end of the cord 60 is electrically connected to the hook sealing 2a. For example, the cord 60 and the hook sealing 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 sealing 2a. Thereby, the light source 10 mounted on the socket 20 and the cord 60 are electrically connected, and an AC power supply is supplied to the light source 10 via the cord 60. Note that the connecting fitting may be covered with an insulating flange cover (not shown).

[0047] The reflector 70 is a reflecting member having a reflecting surface that reflects the light irradiated from the light source 10. As shown in FIG. 1, the reflector 70 is disposed above the socket 20. In the present embodiment, since the socket 20 is covered with the socket cover 50, the reflector 70 is disposed above the socket cover 50. Further, in the present embodiment, since the receiver 80 is disposed on the socket cover 50, a part of the reflector 70 is disposed on the receiver 80. Also, as shown in FIGS. 1 and 2, a part of the reflector 70 is located above the second opening 30b of the shade 30. Note that the reflector 70 is located closest to the ceiling 2 side among the components constituting the lighting device 1. The reflector 70 constitutes an outer member of the lighting device 1. Therefore, the user will see not only the shade 30 but also the reflector 70.

[0048] Also, a part of the reflector 70 is located above the second opening 30b of the shade 30. Specifically, the reflector 70 has a reflecting portion 71 that reflects the light irradiated from the light source 10 and is located above the second opening 30b of the shade 30.

[0049] The reflecting portion 71 has a reflecting surface that reflects the light irradiated from the light source 10. In the present embodiment, the reflecting surface of the reflecting portion 71 is the outer surface of the reflecting portion 71. The reflecting surface of the reflecting portion 71 is formed so as to direct the light irradiated from the light source 10 in a desired direction. The reflecting surface of the reflecting portion 71 is, for example, a curved surface. Specifically, the shape of the reflecting portion 71 is cylindrical with an outer surface that is a curved surface. In the present embodiment, the outer surface shape of the reflecting portion 71 is formed such that the outer diameter gradually increases toward the ceiling 2 side. Note that the reflecting surface of the reflecting portion 71 is not limited to a curved surface. For example, the reflecting surface of the reflecting portion 71 may be a plane inclined with respect to the ceiling 2. In this case, the outer surface shape of the reflecting portion 71 is frustum-shaped.

[0050] The reflector 70 further has a fixing portion 72 that is fixed to the receiver 80. The fixing portion 72 is placed on the intervening portion 82 of the receiver 80 and fixed to the intervening portion 82. The fixing portion 72 is plate-shaped. Specifically, the fixing portion 72 is in the shape of a disk with a constant thickness. The fixing portion 72 is formed to cover the opening on the floor side of the reflecting portion 71. That is, the reflecting portion 71 is formed such that the outer diameter gradually increases toward the ceiling 2 side from the outer peripheral end of the fixing portion 72. Note that the opening on the ceiling 2 side of the reflecting portion 71 is open. Therefore, the overall shape of the reflector 70 is a cup shape that spreads outward toward the ceiling 2 side. Further, the fixing portion 72 is provided with an insertion hole through which the cord 60 is inserted.

[0051] The reflector 70 is a plate-shaped reflecting plate. In the present embodiment, the overall thickness of the reflector 70 is constant. The reflector 70 can be formed of, for example, a resin material or a metal material. Specifically, the reflector 70 may be a white resin molded product made of a resin material such as PBT (polybutylene terephthalate), or may be one in which a metal film such as aluminum is formed on the inner surface of the resin molded product, or may be formed of a metal plate made of a metal material such as aluminum. In the present embodiment, the reflector 70 is formed by pressing a metal plate made of aluminum.

[0052] The receiver 80 is a support member that supports the seat 30. As shown in FIG. 1, the receiver 80 has a seat support portion 81 that supports the seat 30 and an intervening portion 82 that intervenes between the fixing portion 72 of the reflector 70 and the lid portion 52 of the socket cover 50.

[0053] As shown in FIGS. 5 and 6, the seat support portion 81 and the intervening portion 82 are plate-shaped. Specifically, the intervening portion 82 is disc-shaped. Also, as shown in FIG. 1, the seat support portion 81 is provided so as to project outward from the intervening portion 82. In the present embodiment, the seat support portion 81 is an annular shape having a certain width. Further, the seat support portion 81 is inclined with respect to the intervening portion 82 so as to incline upward from the intervening portion 82. Specifically, the outer surface shape and the inner surface shape of the seat support portion 81 are frustum-shaped. Note that the shape of the seat support portion 81 is not limited to this.

[0054] The seat support portion 81 supports the seat 30 by coming into contact with the receiver contact portion 32 of the seat 30. Specifically, the outer peripheral end portion of the seat support portion 81 is in contact with the lower surface of the receiver contact portion 32 of the seat 30, and the seat support portion 81 supports the receiver contact portion 32 from below the receiver contact portion 32.

[0055] The seat support portion 81 projecting from the intervening portion 82 covers at least a part of the second opening 30b of the seat 30. In the present embodiment, the seat support portion 81 is formed so as to block all of the second opening 30b.

[0056] Although the receiver 80 and the seat 30 are in contact with each other, they are not fixed to each other. Specifically, the seat support portion 81 of the receiver 80 and the receiver contact portion 32 of the seat 30 are in contact with each other but are not fixed. That is, the seat support portion 81 and the receiver contact portion 32 are not fixed by a fixing member such as a screw or an adhesive, and the seat 30 is in a state where it can be moved by applying an external force. The seat support portion 81 freely supports the seat 30, and the seat 30 is in a state of being placed on the receiver 80. Thereby, since the seat 30 can be moved, the position of the seat 30 can be adjusted to adjust the inclination of the seat 30.

[0057] The intervening portion 82 of the receptacle 80 is sandwiched between the fixing portion 72 of the reflector 70 and the lid portion 52 of the socket cover 50. The intervening portion 82 is provided with an insertion hole through which the cord 60 is inserted. The reflector 70, the receptacle 80, the socket cover 50, and the support plate 40 are fastened together and fixed to each other by screws 90. Specifically, the fixing portion 72 of the reflector 70, the intervening portion 82 of the receptacle 80, the lid portion 52 of the socket cover 50, and the mounting portion 42 of the support plate 40 are screwed together by screws 90.

[0058] In the receptacle 80, at least the shade support portion 81 has translucency. In the present embodiment, not only the shade support portion 81 has translucency, but also the intervening portion 82 has translucency. That is, the entire receptacle 80 has translucency.

[0059] The shade support portion 81 and the intervening portion 82 are integrally formed of the same material, and the receptacle 80 is an integrally molded product. The receptacle 80 is made of a translucent material. The translucent receptacle 80 is made of a translucent material such as a translucent resin material such as acrylic or polycarbonate, a glass material, or a translucent ceramic material.

[0060] In the present embodiment, the receptacle 80 is transparent. That is, both the shade support portion 81 and the intervening portion 82 are transparent. In this case, the receptacle 80 preferably has a high light transmittance such that the opposite side can be seen through. As an example, the light transmittance of the receptacle 80 is 90% or more, more preferably 95% or more, and even more preferably 98% or more. The transparent receptacle 80 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 receptacle 80 is made of acrylic resin.

[0061] Next, the optical action of the lighting device 1 configured as described above will be described in comparison with the lighting device 1X of the comparative example. FIG. 7 is an external perspective view of the lighting device of the comparative example, and FIG. 8 is a cross-sectional view of the lighting device 1X of the comparative example. FIG. 9 is a perspective view of the socket 80X used in the lighting device 1X of the comparative example. FIG. 10 is a view showing the state when the lighting device 1 according to the embodiment is lit. In FIGS. 8 and 10, the solid arrows indicate the light emitted from the light source 10 and directed downward, and the broken arrows indicate the light emitted from the light source 10 and directed upward.

[0062] As shown in FIGS. 7 and 8, the lighting device 1X of the comparative example is a hanging-type lighting fixture of the upward reflection type, and includes a light source 10, a socket 20X to which the light source 10 is attached, a shade 30X that covers the light source 10, a support plate 40X that supports the socket 20X, a reflector 70X disposed above the socket 20X, and a socket 80X that supports the shade 30X.

[0063] The shade 30X has a first opening 30a that is an opening on the floor side, a second opening 30b that is an opening on the ceiling side, a cylindrical shade body 31X, and a socket contact portion 32X that contacts the socket 80X. The reflector 70X has a curved reflecting portion 71X, a disk-shaped bottom plate 72X, and a cylindrical side plate 73X. The socket 20X and the support plate 40X are housed inside the reflector 70X.

[0064] The socket 80X is composed of a metal plate, and as shown in FIG. 9, has a ring-shaped attachment portion 81X attached to the reflector 70X, a ring-shaped support portion 82X that supports the socket contact portion 32X of the shade 30X, and three connecting portions 83X that connect the attachment portion 81X and the support portion 82X.

[0065] In the lighting device 1X of the comparative example having the receiver 80X with such a structure, as shown in FIGS. 7 and 8, the connecting portion 83X of the receiver 80X is provided so as to straddle the second opening 30b of the shade 30X. For this reason, as shown in FIG. 8, a part of the light emitted from the light source 10 and heading toward the reflecting portion 71X of the reflector 70X is blocked by the connecting portion 83X of the metal receiver 80X when passing through the second opening 30b of the shade 30X. As a result, a shadow of the connecting portion 83X of the receiver 80X appears on the reflecting surface of the reflecting portion 71X, causing light unevenness. As a result, the lighting device 1X of the comparative example has a problem in the design property during lighting.

[0066] Also, in the lighting device 1X of the comparative example, if the diameter is reduced in order to reduce the size, the support portion 82X of the receiver 80X and the reflecting portion 71X of the reflector 70X will approach each other, so that the shadow caused by the connecting portion 83X of the receiver 80X will appear darkly on the reflecting portion 71X. As a result, the design property of the lighting device 1X is further reduced. Thus, in the lighting device 1X of the comparative example including the receiver 80X, it was difficult to reduce the size of the lighting device 1X.

[0067] On the other hand, in the lighting device 1 according to the present embodiment, the shade support portion 81 of the receiver 80 has translucency. That is, although the shade support portion 81 covers the second opening 30b of the shade 30, it can transmit light.

[0068] With this configuration, as shown in FIG. 10, all of the light emitted from the light source 10 and heading toward the reflecting portion 71 of the reflector 70 will pass through the shade support portion 81 when passing through the second opening 30b of the shade 30. As a result, all of the light emitted from the light source 10 and heading toward the reflecting portion 71 of the reflector 70 will enter and be reflected by the reflecting portion 71 of the reflector 70. Therefore, it is possible to suppress the occurrence of a shadow on the reflecting surface of the reflecting portion 71 due to the receiver 80, and it is possible to suppress the occurrence of light unevenness.

[0069] Thus, according to the lighting device 1 according to the present embodiment, it is possible to suppress the occurrence of a shadow on the reflector 70 by the receiver 80 that supports the shade 30. Thereby, the design property during lighting can be improved.

[0070] Further, since the occurrence of a shadow by the receiver 80 can be suppressed, in the lighting device 1 in the present embodiment, the reflector 70 can be reduced in diameter and the lighting device 1 can be easily miniaturized. That is, as described above, in the lighting device 1X of the comparative example, when the diameter of the reflector 70X is reduced, the receiver 80X and the reflector 70X approach each other, and the light is blocked by the connecting portion 83X straddling the second opening 30b of the shade 30X, and the shadow of the connecting portion 83X appears dark on the reflector 70X. However, in the lighting device 1 according to the present embodiment, even if the shade support portion 81 covers the second opening 30b of the shade 30, since the shade support portion 81 has translucency, even if the reflector 70 is reduced in diameter and the receiver 80 and the reflector 70 approach each other, it is possible to suppress the occurrence of a shadow on the reflector 70 by the receiver 80. Therefore, in the lighting device 1 according to the present embodiment, the lighting device 1 can be easily miniaturized.

[0071] Further, in the lighting device 1X of the comparative example, the socket 20X and the support plate 40X could be housed inside the reflector 70X. However, in the lighting device 1 according to the present embodiment, since the reflector 70 is reduced in diameter, the socket 20 and the support plate 40 cannot be housed inside the reflector 70. Specifically, the socket 20 and the support plate 40 are disposed below the reflector 70. That is, the socket 20 and the support plate 40 are disposed outside the reflector 70.

[0072] Therefore, in the lighting device 1 according to the present embodiment, a socket cover 50 that covers the socket 20 is separately disposed.

[0073] With this configuration, the charging parts in the socket 20 and the cord 60 are not exposed. Therefore, when replacing the light source 10 or the like, it is possible to prevent the user from touching the charging part of the socket 20 or the like and getting an electric shock. Thus, according to the lighting device 1 according to the present embodiment, by adopting the socket cover 50 and the receiver 80 that are less likely to cause light unevenness, it is possible to improve the design of the lighting device 1 and realize a compact lighting device 1 while ensuring safety.

[0074] Further, in the lighting device 1 according to the present embodiment, the minimum diameter of the reflector 70 is substantially the same as the outermost diameter of the socket 20, but it is not limited to this. Specifically, the minimum diameter of the reflector 70 may be smaller than the outermost diameter of the socket 20. Also, the minimum diameter of the reflector 70 may be smaller than the outermost diameter of the socket cover 50.

[0075] With this configuration, the diameter of the reflector 70 can be further reduced, so that the lighting device 1 can be further downsized. In the present embodiment, the minimum diameter of the reflector 70 is the outer diameter of the lower end portion of the reflecting portion 71 (= the outer diameter of the fixing portion 72). Also, the minimum diameter of the reflector 70 may be larger than the outermost diameter of the socket 20, but it is better that the minimum diameter of the reflector 70 does not become too large. For example, if the minimum diameter of the reflector 70 is φ1 and the outermost diameter of the socket 20 is φ2, it is preferable that φ1≦1.5×φ2. Also, φ1≦1.2×φ2, φ1≦1.3×φ2, φ1≦1.8×φ2 may be acceptable.

[0076] Further, in the lighting device 1 according to the present embodiment, the reflector 70 has a reflecting portion 71 that reflects the light emitted from the light source and is located above the second opening 30b of the shade 30, and a fixing portion 72 that is fixed to the receiver 80. The socket cover 50 has a cylindrical cover body 51 that covers the side portion of the socket 20, and a lid portion 52 that covers the opening of the cover body 51. The receiver 80 has an intervening portion 82 that intervenes between the fixing portion 72 of the reflector 70 and the lid portion 52 of the socket cover 50.

[0077] Thus, by providing the receiver 80 with the intervening portion 82 interposed between the fixing portion 72 of the reflector 70 and the lid portion 52 of the socket cover 50, the receiver 80 can be stably held. Thereby, the shade 30 placed on the receiver 80 can be stably supported.

[0078] Further, in the lighting device 1 according to the present embodiment, the shade support portion 81 of the receiver 80 is provided so as to project outward from the intervening portion 82.

[0079] With this configuration, in the second opening 30b of the shade 30, the portion (opening gap) not covered by the intervening portion 82 of the receiver 80, the fixing portion 72 of the reflector 70, and the lid portion 52 of the socket cover 50 can be easily closed by the shade support portion 81.

[0080] Specifically, in the present embodiment, the shade support portion 81 of the receiver 80 is formed so as to cover all of the second opening 30b of the shade 30.

[0081] With this configuration, it is possible to suppress the light of the light source 10 irradiated on the reflecting portion 71 of the reflector 70 from becoming a mottled pattern, and it is possible to obtain uniform projection light over the entire circumference of the reflecting portion 71. Thereby, the design property during lighting can be further improved.

[0082] Further, the lighting device 1 according to the present embodiment includes a support plate 40 located above the socket 20, and the socket cover 50, the receiver 80, the reflector 70, and the support plate 40 are arranged and clamped in this order.

[0083] With this configuration, the assemblability of the socket cover 50, the receiver 80, the reflector 70, and the support plate 40 can be improved, and the socket cover 50, the receiver 80, the reflector 70, and the support plate 40 can be firmly fixed.

[0084] (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.

[0085] For example, in the above embodiment, the receiving member 80 having translucency was transparent, but it is not limited to this. Specifically, the receiving member 80 having translucency may be translucent having translucency and diffusibility. That is, each of the shade support portion 81 and the intervening portion 82 may have translucency and diffusibility. In this case, the receiving member 80 becomes milky white. The translucent receiving member 80 can be formed using a translucent resin material such as acrylic or polycarbonate, or a glass material. For example, the translucent receiving member 80 can be formed by dispersing a light diffusing material such as silica particles in a translucent resin material.

[0086] Note that the receiving member 80 having translucency and diffusibility 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. Alternatively, it may be configured to have light diffusibility 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, the receiving member 80 having translucency and diffusibility can be formed.

[0087] In this way, the receiving member 80 may not be transparent but translucent, but it is better to be transparent. By making the receiving member 80 transparent, more light emitted from the light source 10 can be irradiated onto the reflector 70 than in the case of the translucent receiving member 80.

[0088] Also, in the above-described embodiment, the shade support portion 81 of the receiver 80 was formed so as to completely close the second opening 30b of the shade 30, but it is not limited to this. Specifically, the shade support portion 81 may have one or more through holes that transmit light from the light source 10. When a plurality of through holes are provided in the shade support portion 81, they may be provided at equal intervals along the circumferential direction of the shade support portion 81. By providing through holes in the shade support portion 81 in this way, light of a predetermined pattern such as a mottled pattern can be projected onto the reflecting portion 71 of the reflector 70. As a result, patterned light can be projected when the light is on, so that the lighting device 1 with excellent design can be realized. Although there is also a gap in the receiver 80X of the lighting device 1X of the comparative example, this receiver 80X is made of metal and has light-shielding properties. Therefore, in the lighting device 1X of the comparative example, the contrast between light and dark of the light projected onto the reflecting portion 71X of the reflector 70X is large, and the design is not excellent. On the other hand, in the lighting device 1 of this modification, even if through holes are provided in the shade support portion 81, since the shade support portion 81 has translucency, the contrast between light and dark of the light projected onto the reflecting portion 71 of the reflector 70 is small, and the way the shadow appears is soft. Therefore, the lighting device 1 of this modification is superior in design to the lighting device 1X of the comparative example. Moreover, by providing through holes in the shade support portion 81, the structure is such that the second opening 30b of the shade 30 is not completely closed, so that the hot air in the shade 30 can be discharged from the second opening 30b. Thereby, compared with the lighting device 1 in the above-described embodiment, the heat dissipation can be improved.

[0089] Also, in the above-described embodiment, the light source 10 was an LED lamp having a GX53 base, but it is not limited to this. Specifically, the light source 10 may be an LED lamp having an E-type base such as an E26 base or another type of base.

[0090] In addition, in the above-described embodiment, the light source 10 was an LED lamp using 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.

[0091] In addition, in the above-described embodiment, the lighting device 1 included the light source 10, but it is not limited thereto. Specifically, the lighting device 1 may not include the light source 10. That is, a lighting device 1 that does not include the light source 10 may be sold as a product.

[0092] Furthermore, forms obtained by applying various modifications that can be conceived by those skilled in the art to the above-described embodiments, and forms realized by arbitrarily combining the components and functions in the above-described 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 at the time of filing of the present application are also included in the present invention. Further, when the dependent claims described in the claims at the time of filing of the present application 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.

Description of Reference Numerals

[0093] 1 Lighting device 10 Light source 20 Socket 30 Shade 30a First opening 30b Second opening 31 Shade body 40 Support plate 50 Socket cover 51 Cover body 52 Lid portion 70 Reflector 71 Reflecting part 72 Fixing part 80 Receiver 81 Save support part 82 Intermediate part 90 Screw

Claims

1. A socket to which a light source is attached, A shade that covers the light source, A reflector located above the socket that reflects light from the light source, A receiver fixed to the reflector, comprising: The shade has an opening through which light from the light source passes, The receiver has a shade support portion that covers at least a part of the opening and supports the shade, The shade support portion has translucency, A lighting device.

2. Furthermore, it includes a socket cover that covers the socket, The minimum diameter of the reflector is smaller than the outermost diameter of the socket cover, The lighting device according to Claim 1.

3. The reflector has a reflecting portion that reflects light irradiated from the light source and is located above the opening, and a fixing portion fixed to the receiver, The socket cover has a cylindrical cover body that covers the side portion of the socket, and a lid portion that covers the opening of the cover body, The receiver has an intervening portion intervening between the fixing portion and the lid portion, The lighting device according to Claim 2.

4. The shade support portion is provided so as to project outward from the intervening portion, The lighting device according to Claim 3.

5. Furthermore, it includes a support plate located above the socket, The socket cover, the receiver, the reflector, and the support plate are fastened together, The lighting device according to Claim 3.

6. The shade support portion is formed so as to block all of the opening, The lighting device according to any one of Claims 1 to 5.

7. The shade support portion has a through hole through which light from the light source passes, The lighting device according to any one of Claims 1 to 5.

8. The shade support portion is transparent, The lighting device according to any one of Claims 1 to 5.

9. The lighting device is a suspended lighting device suspended from a building material, The lighting device according to any one of Claims 1 to 5.

10. A light source is attached to the socket, The lighting device according to any one of Claims 1 to 5.

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