Lighting devices and lighting fixtures

Abstract

To provide lighting devices and the like that allow the length of the power cord to be adjusted without compromising the aesthetic design. [Solution] A lighting device 1 suspended from building materials, comprising: a mounting member 10 attached to a power supply unit installed on the building material; a power cord 20 extending from the mounting member 10; a socket 40 receiving power from the power cord 20; a lamp 3 detachably attached to the socket 40; a cord fixing member 60 to which a part of the power cord 20 is fixed; a shade 30 covering the socket 40, the lamp 3 and the cord fixing member 60; and a cord storage member 50 arranged inside the shade 30 to store the power cord 20, wherein the cord fixing member 60 is provided on the mounting member 10 side of the cord storage member 50.

Description

Technical Field

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

Background Art

[0002] Conventionally, a hanging type lighting device suspended from a building material such as a ceiling has been known. For example, Patent Document 1 discloses a pendant light suspended from a ceiling by a power cord as a hanging type lighting device. This type of hanging type lighting device includes a mounting member attached to the ceiling, a power cord extending from the mounting member, a socket that receives power from the power cord and to which a lamp is attached, and a shade that covers the lamp.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a lighting device suspended from a ceiling by a power cord, a cord winding mechanism may be provided to adjust the length of the power cord.

[0005] However, in conventional lighting devices, since the cord winding mechanism is provided inside the mounting member attached to the ceiling, there is a problem that the mounting member becomes large and the design of the lighting device deteriorates. In addition, it is also conceivable to separately provide a dedicated member having a cord winding mechanism at the central portion of the power cord, but in this case as well, the design of the entire lighting device deteriorates.

[0006] The present invention has been made to solve such problems, and an object thereof is to provide a lighting device and a lighting fixture capable of adjusting the length of a power cord without deteriorating the design. [Means for solving the problem]

[0007] To achieve the above objective, one embodiment of the lighting device according to the present invention is a lighting device suspended from a building material, comprising: a mounting member attached to a power supply unit installed on the building material; a power cord extending from the mounting member; a socket that receives power from the power cord; a lamp detachably attached to the socket; a cord fixing member to which a part of the power cord is fixed; a shade that houses the socket, the lamp, and the cord fixing member; and a cord storage member disposed within the shade for storing the power cord, wherein the cord fixing member is provided on the mounting member side of the cord storage member.

[0008] Furthermore, one embodiment of the lighting fixture according to the present invention is a lighting fixture suspended from a building material, comprising: a mounting member attached to the building material; a power cord extending from the mounting member; a socket powered by the power cord and into which a lamp is detachably mounted; a cord fixing member to which a part of the power cord is fixed; a shade covering the socket, the lamp and the cord fixing member; and a cord storage member disposed within the shade for storing the power cord, wherein the cord fixing member is provided on the mounting member side of the cord storage member. [Effects of the Invention]

[0009] The length of the power cord can be adjusted without compromising the aesthetic design. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a perspective view of the lighting device according to Embodiment 1, viewed from below. [Figure 2] Figure 2 is a perspective view of the lighting device according to Embodiment 1, viewed from above. [Figure 3] Figure 3 is an exploded perspective view of the lighting device according to Embodiment 1, viewed from above. [Figure 4] Figure 4 is an exploded perspective view of the lighting device according to Embodiment 1, viewed from below. [Figure 5] Figure 5 is a cross-sectional view of the lighting device according to Embodiment 1. [Figure 6] Figure 6 shows the power cord in the state where it is wrapped around the cord storage member in the lighting device according to Embodiment 1. [Figure 7] Figure 7 shows the process of separating the shade and the lid when adjusting the length of the power cord between the lid and the mounting member using the lighting device according to Embodiment 1. [Figure 8] Figure 8 shows the process of separating the cord fixing member and the cord storage member when adjusting the length of the power cord between the lid and the mounting member using the lighting device according to Embodiment 1. [Figure 9] Figure 9 is a cross-sectional view of the lighting device according to Embodiment 2. [Figure 10] Figure 10 is a perspective view of the spacer in the lighting device according to Embodiment 2. [Figure 11] Figure 11 is a perspective view of the optional component according to Modification 1, seen from one side. [Figure 12] Figure 12 is a perspective view of the optional member according to Modification 1, as seen from the other side. [Figure 13] Figure 13 shows the configuration of the optional component according to Modification 1. [Figure 14] Figure 14 is a perspective view of the optional component according to Modification Example 2, seen from one side. [Figure 15] Figure 15 is a perspective view of the optional member according to Modification 2, as seen from the other side. [Figure 16] Figure 16 is a cross-sectional view of the optional member according to modified example 2. [Figure 17] Figure 17 shows the configuration of the optional component according to Modification Example 2. [Figure 18] Figure 18 is a perspective view of the optional component according to Modification Example 3. [Figure 19]FIG. 19 is a cross-sectional view of the option member according to Modification 3. [Figure 20] FIG. 20 is a perspective view of the option member according to Modification 4 as viewed from one side. [Figure 21] FIG. 21 is a perspective view of the option member according to Modification 4 as viewed from the other side.

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, components not described in the independent claims indicating the most general concept of the present invention are described as optional components.

[0012] In addition, 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 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 1) The configuration of the lighting device 1 according to Embodiment 1 will be explained using Figures 1 to 6. Figure 1 is a perspective view of the lighting device 1 according to Embodiment 1 from below. Figure 2 is a perspective view of the lighting device 1 according to Embodiment 1 from above. Figure 3 is an exploded perspective view of the lighting device 1 according to Embodiment 1 from above. Figure 4 is an exploded perspective view of the lighting device 1 according to Embodiment 1 from below. Figure 5 is a cross-sectional view of the lighting device 1 according to Embodiment 1. Figure 6 is a diagram showing the power cord 20 wrapped around the cord storage member 50 in the lighting device 1 according to Embodiment 1.

[0014] Lighting device 1 is a suspended type of lighting device called a cylinder pendant, which is suspended from building materials in a house, shop, or other building.

[0015] In this embodiment, the lighting device 1 is attached to a duct rail (wiring duct) installed on a building material such as a ceiling or beam. The duct rail is an example of a power supply unit that supplies power to the lighting device 1. Specifically, the duct rail is supplied with commercial AC power (grid power) from an external power source, and the duct rail supplies AC power to the lighting device 1. By attaching the mounting member 10 of the lighting device 1 to the duct rail, the lighting device 1 and the duct rail can be electrically and mechanically connected. The duct rail may be of the type that is embedded in the ceiling, of the type that is directly attached to the ceiling, or of the type that is suspended from the ceiling.

[0016] As shown in Figures 1 to 5, the lighting device 1 comprises a lighting fixture 2 and a lamp 3 attached to the lighting fixture 2. The lamp 3 is detachably attached to the lighting fixture 2. In other words, the lamp 3 is replaceable.

[0017] The lighting fixture 2 comprises a mounting member 10, a power cord 20, a shade 30, a socket 40, a cord storage member 50, a cord fixing member 60, a cover 70, and an optional member 80.

[0018] The mounting member 10 is attached to a power supply unit installed on a building material. In this embodiment, the mounting member 10 is a plug that is electrically and mechanically connected to the duct rail, which is the power supply unit. Specifically, as shown in Figures 2 and 4, the mounting member 10 has a mounting bracket 11 and a housing 12 that holds the mounting bracket 11. By engaging the mounting bracket 11 with a groove in the duct rail and rotating the housing 12, the mounting member 10 and the duct rail can be electrically connected and the mounting member 10 can be fixed to the duct rail.

[0019] As shown in Figures 1 to 4, the mounting member 10 is connected to the first end 21, which is one end of the power cord 20. Specifically, within the housing 12 of the mounting member 10, the mounting bracket 11 of the mounting member 10 is electrically connected to the first end 21 of the power cord 20.

[0020] The power cord 20 is a cord extending from the mounting member 10. The first end 21 of the power cord 20 is fixed to the mounting member 10. Specifically, the first end 21 of the power cord 20 is inserted through a through hole provided in the housing 12 of the mounting member 10 and fixed to the housing 12. The power cord 20, which is mechanically and electrically connected to the mounting member 10, is drawn out from the mounting member 10.

[0021] The power cord 20 is a power supply line that supplies power to the lamp 3. As described above, the first end 21 of the power cord 20 is electrically connected to the mounting member 10. Therefore, commercial AC power is supplied to the power cord 20 via the mounting member 10. The other end of the power cord 20, the second end 22, is electrically connected to the socket 40. As a result, the commercial AC power supplied to the power cord 20 is supplied to the lamp 3 via the socket 40.

[0022] The power cord 20 is a power cable and, for example, has at least two or more power supply wires and an outer cover (sheath) that covers the multiple power supply wires. Each of the multiple power supply wires is composed of a core wire such as a copper wire and an insulating film that covers the core wire. The outer cover is an insulating protective member. The outer cover may be a cylindrical rubber tube that houses the multiple power supply wires, a rubber member into which the multiple power supply wires are embedded, or a fibrous member provided to cover the multiple power supply wires.

[0023] Furthermore, the power cord 20 also functions as a support cord for the lighting device 1. Specifically, the lighting device 1 is suspended from the ceiling by the power cord 20. The power cord 20 is flexible, but when the lighting device 1 is installed, it is kept straight due to the weight of the lighting device 1. The flexible power cord 20 can be coiled and bent. In other words, the power cord 20 can freely change its shape.

[0024] The shade 30 is the fixture body in the lighting device 1 and lighting fixture 2. As shown in Figure 5, the shade 30 is a housing that covers the lamp 3. Therefore, the lamp 3 is housed in the shade 30. In this embodiment, the shade 30 houses not only the lamp 3, but also the socket 40, the cord storage member 50, the cord fixing member 60, and the cover 70. In other words, the socket 40, the cord storage member 50, the cord fixing member 60, and the cover 70 are arranged inside the shade 30.

[0025] As shown in Figures 1 to 5, the shade 30 is a long, cylindrical body and has a first opening 31 located at one end in the longitudinal direction of the shade 30 and a second opening 32 located at the other end in the longitudinal direction of the shade 30. The first opening 31 is located at the end of the shade 30 on the mounting member 10 side in the longitudinal direction, and the second opening 32 is located at the end of the shade 30 opposite to the mounting member 10 side in the longitudinal direction.

[0026] When the lighting device 1 is suspended from the ceiling, the shade 30 extends vertically. That is, the longitudinal direction of the shade 30 is vertical. In this case, the first opening 31 opens toward the ceiling, and the second opening 32 opens toward the floor. That is, the first opening 31 is an opening on the ceiling side (upper side), and the second opening 32 is an opening on the floor side (lower side).

[0027] In this embodiment, the shade 30 is a slender, cylindrical body with a constant outer diameter. In this case, if the outer diameter of the shade 30 is a and the length of the shade 30 in the longitudinal direction is b, then, as an example, 2 ≤ b / a ≤ 20. The shade 30 may be even more slender, and 3 ≤ b / a may also be the case. In this embodiment, the shade 30 is a long cylindrical member with a = 50 mm and b = 200 mm (b / a = 4).

[0028] The shade 30 is an outer cover that constitutes the outer casing of the lighting device 1. The shade 30 may or may not be light-transmitting. In this embodiment, the shade 30 is not light-transmitting and is made of an opaque material. Therefore, the illumination light emitted from the lamp 3 housed in the shade 30 does not emanate from the outer surface of the shade 30, but only from the second opening 32 of the shade 30.

[0029] The shade 30 is made of a metal or resin material. In this embodiment, the shade 30 is made of a metal material. Specifically, the shade 30 is made of aluminum. As an example, the shade 30 is formed into a cylindrical shape by extrusion molding using aluminum.

[0030] The socket 40 shown in Figure 5 receives power from the power cord 20. Specifically, the socket 40 receives AC power from the power cord 20. The socket 40 also has the function of holding the lamp 3 and is electrically and mechanically connected to the lamp 3. The socket 40 supplies the AC power received from the power cord 20 to the lamp 3.

[0031] The socket 40 includes, for example, a pair of conductive connectors that are electrically and mechanically connected to the lamp 3, and an insulating housing that houses the pair of connectors. The pair of connectors are connected to each of a pair of lead wires 73 that are connected to the terminal block 72. In other words, AC power is supplied to the pair of connectors. For example, the pair of connectors are made of a metal material, and the housing is made of an insulating resin material.

[0032] The socket 40 has a socket function that corresponds to the base of the lamp 3. Specifically, as shown in Figure 4, the housing of the socket 40 has a pair of elongated holes 41 formed therein as receiving holes for the pair of power supply pins 3d (see Figure 3) of the lamp 3. By inserting the pair of power supply pins 3d of the lamp 3 into the pair of elongated holes 41 and rotating the lamp 3, the pair of power supply pins 3d can be connected to the connection terminals of the socket 40. This connects the socket 40 and the lamp 3 electrically and mechanically.

[0033] The cord storage member 50 is a member for storing the power cord 20. As shown in Figure 5, the cord storage member 50 is located inside the shade 30. Therefore, the shade 30 has a cord storage space 30S as the spatial area in which the cord storage member 50 is located. In other words, the cord storage space 30S is the spatial area in which the power cord 20 is stored.

[0034] As shown in Figure 5, the cord storage member 50 located in the cord storage space 30S has a support column 51 that holds the power cord 20. The power cord 20 is wound around the support column 51. As shown in Figures 5 and 6, the power cord 20 is wound spirally around the support column 51. By winding the power cord 20 around the support column 51, the cord storage member 50 stores the power cord 20. The cord storage member 50 is a cord winding mechanism that winds up the power cord 20. In this embodiment, the cord storage member 50 has a plurality of support columns 51. The power cord 20 is wound around a plurality of support columns 51 together.

[0035] As shown in Figures 3 to 6, the cord storage member 50 has a socket holding portion 52 that holds the socket 40. In other words, the socket holding portion 52 is provided at the lamp 3 side (lower side) end of the support column 51. The socket holding portion 52 has a structure into which the socket 40 is fitted. The socket 40 and the socket holding portion 52 are fixed together by screws. A through hole 52a is provided in the center of the socket holding portion 52 through which the power cord 20 is inserted.

[0036] As shown in Figure 5, the cord storage member 50 and the cord fixing member 60 are positioned inside the shade 30 in contact with each other. As shown in Figures 3 to 5, the cord storage member 50 has a contact portion 53 that abuts against the cord fixing member 60. As shown in Figure 5, the contact portion 53 of the cord storage member 50 is fitted into the recess 63 of the cord fixing member 60 and abuts against the recess 63. In this case, by pulling up the cord storage member 50, through which the power cord 20 is inserted into the through hole 52a of the socket holding portion 52, the contact portion 53 of the cord storage member 50 is fitted into the recess 63 of the cord fixing member 60. As a result, the cord fixing member 60 and the cord storage member 50 come into contact, and the relative positional relationship between the cord fixing member 60 and the cord storage member 50 is determined. Note that although the cord storage member 50 and the cord fixing member 60 are in contact, they are not fixed together. In other words, the cord storage member 50 and the cord fixing member 60 are merely in contact with each other and are not fixed with screws or the like. If no force is applied to pull up the cord storage member 50, the cord fixing member 60 and the cord storage member 50 will separate.

[0037] The contact portion 53 of the cord storage member 50 is provided with a gap 53a through which the power cord 20 is inserted. Furthermore, the contact portion 53 is provided with a notch hole 53b. As shown in Figure 6, the power cord 20 pulled out from the gap 53a can be hooked into the notch hole 53b and pushed in, thereby holding the power cord 20 in place by light press-fitting. In other words, the notch hole 53b has a cord holding function for holding the power cord 20. The power cord 20 can be easily removed from the notch hole 53b by pulling the power cord 20 along the open portion of the notch hole 53b.

[0038] In the cord storage member 50, the support column 51, the socket holding portion 52, and the contact portion 53 are integrally formed. Specifically, the support column 51, the socket holding portion 52, and the contact portion 53 are integrally formed from an insulating resin material. In other words, the cord storage member 50 is a single resin molded product.

[0039] As shown in Figures 5 and 6, the power cord 20, whose second end 22 is connected to the socket 40, is inserted through the through hole 52a of the socket holding part 52, pulled out from between the multiple support columns 51, and wrapped around the multiple support columns 51. The power cord 20 is further inserted through the gap 53a of the contact part 53, bent in the notch hole 53b, and lightly press-fitted into the notch hole 53b, thereby being held by the contact part 53.

[0040] As shown in Figure 5, the cord fixing member 60, which the cord storage member 50 abuts against, is provided on the mounting member 10 side of the cord storage member 50. The cord fixing member 60 is a member that fixes the power cord 20. Specifically, a part of the power cord 20 is fixed to the cord fixing member 60. The cord fixing member 60 is made of, for example, an insulating resin material.

[0041] The cord fixing member 60 has a through-hole 61 in its center through which the power cord 20 is inserted. As shown in Figures 4 and 5, the cord fixing member 60 also has a cord holding part 62 for holding the power cord 20. The cord holding part 62 is composed of one or more elastically deformable claws and is provided inside the through-hole 61. As a result, when the power cord 20 is inserted through the through-hole 61, the cord holding part 62 elastically deforms, and the power cord 20 can be held in the cord holding part 62 by light press-fitting. This allows the power cord 20 to be fixed to the cord fixing member 60. The power cord 20 fixed to the cord fixing member 60 can be moved within the through-hole 61 while being held in the cord holding part 62.

[0042] Furthermore, as shown in Figures 4 and 5, a recess 63 is provided on the lamp 3 side (lower side) of the cord fixing member 60. The contact portion 53 of the cord storage member 50 is fitted into the recess 63. The recess 63 is composed of, for example, an annular partition wall.

[0043] As shown in Figure 5, the cord fixing member 60 is fixed to the lid 70. The cord fixing member 60 and the lid 70 are fixed together by screws.

[0044] The cover portion 70 is attached to the shade 30. Specifically, the cover portion 70 is positioned to cover the first opening 31 of the shade 30. In this embodiment, a screw groove (threaded portion) is formed on the inner circumferential surface of the end of the shade 30 on the side of the first opening 31. A screw groove (threaded portion) is also formed on the outer circumferential side surface of the cover portion 70. Therefore, the cover portion 70 can be fixed to the shade 30 by rotating the cover portion 70 or the shade 30 and screwing the cover portion 70 into the first opening 31 of the shade 30. The cover portion 70 can be removed from the shade 30 by rotating it in the opposite direction.

[0045] As shown in Figures 3 to 5, a through-hole 71 is provided in the center of the lid 70 through which the power cord 20 is inserted. The power cord 20, inserted through the through-hole 61 of the cord fixing member 60, is pulled out from the through-hole 71 of the lid 70. As a result, the power cord 20 is pulled out to the outside of the shade 30.

[0046] The lid portion 70 is made of a metal or resin material. In this embodiment, the lid portion 70 is made of a metal material. For example, the lid portion 70 is made of aluminum. Since the lid portion 70 is made of a metal material, it is preferable that there be a gap between the through hole 71 of the lid portion 70 and the power cord 20 so that the power cord 20 does not come into contact with the lid portion 70. This can prevent the power cord 20 from breaking.

[0047] As shown in Figures 1, 2, and 5, an optional member 80 is attached to the shade 30. The optional member 80 is positioned to close the second opening 32 of the shade 30. The optional member 80 is fixed to the shade 30. Specifically, a screw groove (threaded portion) is formed on the inner circumferential surface of the end of the shade 30 on the side facing the second opening 32. A screw groove (threaded portion) is also formed on the outer circumferential side surface of the optional member 80. Therefore, the optional member 80 can be fixed to the shade 30 by rotating it and screwing it into the second opening 32 of the shade 30. The optional member 80 can be removed from the shade 30 by rotating it in the opposite direction.

[0048] The optional member 80 is positioned opposite the lens 3c of the lamp 3. The optional member 80 is an optical member that controls the light distribution of the light emitted from the lamp 3. For example, the optional member 80 is a translucent, milky white diffuser. As a result, the light emitted from the lamp 3 and incident on the optional member 80 is diffused (scattered) by the optional member 80 and then transmitted through the optional member 80. In this embodiment, the optional member 80 is a solid cylindrical diffuser.

[0049] Furthermore, as shown in Figure 5, an annular elastic ring 90 may be inserted between the outer peripheral surface of the optional member 80 and the inner peripheral surface of the end of the shade 30 on the side of the second opening 32. This prevents water, dust, etc. from entering the shade 30 through the second opening 32. The elastic ring 90 is made of an elastic material that deforms elastically. The elastic ring 90 is made of, for example, an elastomer. Specifically, silicone rubber or urethane rubber can be used as the material for the elastic ring 90.

[0050] A lamp 3 is attached to the lighting fixture 2 configured in this way. The lamp 3 is detachably attached to the socket 40.

[0051] Lamp 3 is the light source of the lighting device 1. Lamp 3 is an LED lamp using an LED (Light Emitting Diode). In this embodiment, Lamp 3 is a compact LED lamp with an overall elongated shape. As an example, the external dimensions of Lamp 3 are such that the diameter φ is 50 mm or less. In this embodiment, the external dimensions of Lamp 3 are such that the diameter φ is 45 mm.

[0052] Furthermore, although Lamp 3 is a compact type, it emits illumination light with a high luminous flux equivalent to or greater than a 60-watt (60W) incandescent bulb. Specifically, Lamp 3 can emit illumination light equivalent to a 100-watt incandescent bulb.

[0053] As shown in Figures 3 to 5, the lamp 3 comprises a housing 3a, a light-emitting part 3b held in the housing 3a, a lens 3c positioned opposite the light-emitting part 3b, a pair of power supply pins 3d that receive power to make the light-emitting part 3b emit light, and a drive circuit 3e for driving the light-emitting part 3b.

[0054] The housing 3a is an outer enclosure member that constitutes the outer casing of the lamp 3. The housing 3a is cylindrical in shape. The housing 3a holds the light-emitting part 3b and the lens 3c. The drive circuit 3e is also housed inside the housing 3a. The housing 3a is made of resin or metal material.

[0055] The light-emitting unit 3b emits light of a predetermined color. In this embodiment, the light-emitting unit 3b emits white light. The light emitted by the light-emitting unit 3b becomes the illumination light of the lamp 3. The light-emitting unit 3b is an LED module composed of LEDs, and has a substrate and one or more LED elements mounted on the substrate. In this embodiment, the light-emitting unit 3b is a COB (Chip On Board) type LED module, and has a substrate, a plurality of LED chips directly mounted on the substrate as LED elements, and a sealing member that seals the plurality of LED chips. In this case, when a blue LED chip that emits blue light is used as the LED chip, the sealing member is made of a resin material containing a yellow phosphor. As a result, white light is emitted from the light-emitting unit 3b. The light emitted from the light-emitting unit 3b is incident on the lens 3c.

[0056] The light-emitting unit 3b was a COB type LED module, but is not limited to this. For example, the light-emitting unit 3b may be an SMD (Surface Mount Device) type LED module. When the light-emitting unit 3b is an SMD type LED module, the light-emitting unit 3b has a substrate and one or more SMD type light-emitting elements mounted on the substrate as LED elements. An SMD type light-emitting element has, for example, a resin package (container), an LED chip (e.g., a blue LED chip) mounted in a recess of the package, and a sealing member (e.g., the phosphor-containing resin mentioned above) enclosed in the recess of the package.

[0057] The lens 3c is a light-transmitting optical component. The lens 3c transmits light emitted from the light-emitting part 3b. In this embodiment, the lens 3c is a focusing lens that concentrates the light emitted from the light-emitting part 3b. The lens 3c is made of a light-transmitting material. Specifically, the lens 3c is made of a transparent resin material such as acrylic or polycarbonate, or a glass material.

[0058] Alternatively, a light-transmitting cover may be provided instead of the lens 3c. In this case, the light-transmitting cover may be a transparent cover that does not diffuse light, or a diffuse cover that does diffuse light.

[0059] The pair of power supply pins 3d (electrode pins) shown in Figure 3 are conductive pins that receive power from outside the lamp 3 to illuminate the light-emitting part 3b. For example, the pair of power supply pins 3d receive AC power from the socket 40. The pair of power supply pins 3d and the drive circuit 3e are electrically connected by lead wires or the like. The pair of power supply pins 3d are also connection pins for connecting the lamp 3 to the socket 40. Each power supply pin 3d is electrically and mechanically connected to the socket 40. The lamp 3 is held in the socket 40 by the connection of the power supply pins 3d to the socket 40. Each power supply pin 3d is a T-shaped pin with a disc-shaped large diameter portion at its tip.

[0060] In this embodiment, lamp 3 has a base similar to the GX53 type base. Therefore, the distance between the pair of power supply pins 3d is set to a predetermined length. However, in this embodiment, the pair of power supply pins 3d do not correspond to the GX53 type base (where the distance between the pair of power supply pins is 53 mm), and the distance between the pair of power supply pins 3d is 27 mm.

[0061] The drive circuit 3e is a power supply circuit for causing the light-emitting unit 3b to emit light, and supplies a predetermined amount of power to the light-emitting unit 3b. The drive circuit 3e converts the AC power (for example, AC100V commercial AC power) received from the socket 40 via a pair of power supply pins 3d into DC power and supplies the DC power to the light-emitting unit 3b. As a result, the light-emitting unit 3b emits light.

[0062] As shown in Figure 5, the lamp 3 is mounted in the socket 40 of the lighting fixture 2. For example, if the lighting device 1 is installed on the ceiling, the lamp 3 is mounted in the socket 40 so that the lens 3c faces the floor (i.e., the pair of power supply pins 3d face the ceiling).

[0063] Lamp 3 is detachably attached to socket 40. That is, lamp 3 can be attached to and removed from socket 40. In this embodiment, since lamp 3 has a base conforming to the GX53 type base, lamp 3 can be attached to socket 40 by rotating lamp 3 horizontally in a plane parallel to the ceiling surface. Specifically, lamp 3 can be attached to socket 40 by grasping the protrusion on the surface of the lens 3c of lamp 3 with your hand, inserting the power supply pin 3d of lamp 3 into the elongated hole 41 of socket 40, and rotating lamp 3 clockwise. On the other hand, lamp 3 can be removed from socket 40 by rotating lamp 3 counterclockwise after it has been attached to socket 40.

[0064] When attaching the lamp 3 to the socket 40, the optional component 80 should be removed from the shade 30. This allows the lamp 3 to be attached to the socket 40 by inserting it through the second opening 32 of the shade 30. Similarly, when removing the lamp 3 from the socket 40, the optional component 80 should be removed from the shade 30. This allows the lamp 3 to be removed from the socket 40 and taken out through the second opening 32 of the shade 30. Thus, when attaching or removing the lamp 3 from the socket 40, it is not necessary to remove the cover portion 70 from the shade 30.

[0065] On the other hand, when adjusting the length of the power cord 20 between the lid 70 and the mounting member 10 (i.e., the length of the power cord 20 pulled out from the lid 70), the lid 70 is removed from the shade 30.

[0066] Here, a method for adjusting the length of the power cord 20 between the lid 70 and the mounting member 10 will be explained using Figures 7 and 8. Figures 7 and 8 are diagrams illustrating a method for adjusting the length of the power cord 20 between the lid 70 and the mounting member 10 using the lighting device 1 according to Embodiment 1. Figure 7 shows the state when the shade 30 and the lid 70 are separated, and Figure 8 shows the state when the cord fixing member 60 and the cord storage member 50 are separated.

[0067] To adjust the length of the power cord 20 between the lid 70 and the mounting member 10, first, separate the shade 30 and the lid 70 as shown in Figure 7. Specifically, remove the shade 30 from the lid 70 by rotating the shade 30.

[0068] In this case, the cord storage member 50 and the cord fixing member 60 are only in contact and not fixed together, and the power cord 20 held by the cord holding part 62 can be easily released. Therefore, the position of the cord fixing member 60 to which the lid 70 is fixed can be shifted up and down along the power cord 20. This makes it possible to change the positions of the lid 70 and the cord fixing member 60 on the power cord 20.

[0069] For example, to shorten the length of the power cord 20 between the lid 70 and the mounting member 10, as shown in Figure 8, the position of the cord fixing member 60 to which the lid 70 is fixed is shifted upward (i.e., towards the mounting member 10). This shortens the length of the power cord 20 between the lid 70 and the mounting member 10 (the length of the power cord 20 outside the lid 70), while lengthening the portion of the power cord 20 between the cord fixing member 60 and the contact portion 53 of the cord storage member 50 (the length of the power cord 20 inside the lid 70). Then, this lengthened portion of the power cord 20 (the power cord 20 inside the lid 70) is wrapped around the support column 51 of the cord storage member 50. This allows the lengthened portion of the power cord 20 to be stored in the cord storage member 50.

[0070] On the other hand, although not shown in the diagram, if the length of the power cord 20 between the lid 70 and the mounting member 10 is to be increased, the power cord 20 can be released from the power cord holding part 62, and then part or all of the power cord 20 wrapped around the support column 51 of the cord storage member 50 can be unwound to detach the power cord 20 from the support column 51.

[0071] In this way, by changing the number of times the power cord 20 is wrapped around the support column 51, the length of the power cord 20 between the lid 70 and the mounting member 10 can be adjusted.

[0072] After adjusting the length of the power cord 20, the power cord 20 is held in the cord holding portion 62 of the cord fixing member 60, and the power cord 20 is pulled up to bring the cord storage member 50 and the cord fixing member 60 into contact. Then, the cover portion 70 is attached to the first opening 31 of the shade 30. Specifically, the shade 30 and the cover portion 70 are fixed together by rotating the shade 30 and screwing the cover portion 70 into the first opening 31 of the shade 30.

[0073] In this embodiment, the shade 30 was removed from the cover 70 when adjusting the length of the power cord 20, but this is not limited to this. For example, when attaching or removing the lamp 3 from the socket 40, the shade 30 may be removed from the cover 70 as shown in Figure 7. For example, when replacing the lamp 3, the shade 30 may be removed from the cover 70 instead of removing the optional component 80 from the shade 30. This exposes the entire lamp 3, making it easy to replace the lamp 3.

[0074] In particular, in this embodiment, the lamp 3 is a compact LED lamp with an overall elongated shape, and the shade 30 is also an elongated cylindrical shape. As shown in Figure 5, the lamp 3 is housed in a cramped state within the shade 30. That is, the maximum diameter of the lamp 3 and the inner diameter of the shade 30 are approximately the same, resulting in a narrow space between the lamp 3 and the shade 30. In this embodiment, the width of the gap between the lamp 3 and the shade 30 is 5 mm or less. Specifically, the gap between the outermost part of the lamp 3 and the inner surface of the shade 30 is 5 mm or less, a gap that prevents a person's finger from entering. Therefore, when replacing the lamp 3, the user cannot grasp the side of the lamp 3 and store it inside the shade 30. Thus, as described above, the lamp 3 can be easily replaced by removing the shade 30 from the lid 70 and exposing the entire lamp 3.

[0075] As described above, the lighting device 1 according to this embodiment comprises a mounting member 10, a power cord 20 extending from the mounting member 10, a socket 40 that receives power from the power cord 20, a lamp 3 that is detachably attached to the socket 40, a cord fixing member 60 to which a part of the power cord 20 is fixed, a shade 30 that houses the socket 40, the lamp 3 and the cord fixing member 60, and a cord storage member 50 arranged inside the shade 30 to store the power cord 20.

[0076] This configuration allows the power cord 20 to be stored inside the shade 30. In other words, the power cord winding mechanism can be built into the shade 30. This makes it possible to adjust the length of the power cord 20 without compromising the aesthetics.

[0077] Furthermore, in the lighting device 1 according to this embodiment, a cover portion 70 is attached to the shade 30 so as to close the first opening 31.

[0078] This configuration allows the length of the power cord 20 to be adjusted by removing the cover 70 from the shade 30.

[0079] Furthermore, in the lighting device 1 according to this embodiment, the cord fixing member 60 is fixed to the cover portion 70.

[0080] With this configuration, by removing the lid 70 from the shade 30, the cord fixing member 60 fixed to the lid 70 can also be removed from the shade 30. This makes it easy to adjust the length of the power cord 20.

[0081] Furthermore, in the lighting device 1 according to this embodiment, the cord storage member 50 has a support column 51 that holds the power cord 20.

[0082] This configuration allows the power cord 20 to be stored compactly and easily by wrapping it around the support column 51. Furthermore, by wrapping the power cord 20 around the support column 51, the length of the power cord 20 can be easily adjusted by changing the number of times the power cord 20 is wrapped around the support column 51.

[0083] Furthermore, in the lighting device 1 according to this embodiment, the cord fixing member 60 and the cord storage member 50 are arranged in contact with each other.

[0084] With this configuration, the cord fixing member 60 and the cord storage member 50 are not fixed together with screws or the like, so they can be easily separated. This allows the user to easily change the length of the power cord 20.

[0085] Furthermore, in the lighting device 1 according to this embodiment, an optional member 80 for controlling the light distribution of the light emitted from the lamp 3 is attached to the shade 30.

[0086] With this configuration, the atmosphere of the illumination light emitted from the lighting device 1 can be changed simply by attaching the optional component 80 to the shade 30.

[0087] (Embodiment 2) Next, the lighting device 1A according to Embodiment 2 will be described with reference to Figures 9 and 10. Figure 9 is a cross-sectional view of the lighting device 1A according to Embodiment 2. Figure 10 is a perspective view of the spacer 100 in the lighting device 1A according to Embodiment 2.

[0088] The lighting device 1A according to this embodiment has a longer shade 30 compared to the lighting device 1 in Embodiment 1. Specifically, in the lighting device 1 in Embodiment 1, the length of the shade 30 was 200 mm, but in the lighting device 1A according to this embodiment, the length of the shade 30 is 600 mm.

[0089] Therefore, as shown in Figure 9, the lighting device 1A according to this embodiment is further equipped with a spacer 100 located inside the shade 30, compared to the lighting device 1 according to the first embodiment. The spacer 100 is located between the cord storage member 50 and the cord fixing member 60.

[0090] As shown in Figures 9 and 10, the spacer 100 has a plurality of support columns 110, a connecting portion 120, and a contact portion 130. The connecting portion 120 is provided at the end of the support column 110 on the cord storage member 50 side. The connecting portion 120 fits into and contacts the recess of the contact portion 53 of the cord storage member 50. In this case, as the cord storage member 50 is pulled up by the power cord 20, the connecting portion 120 fits into the recess of the contact portion 53 of the cord storage member 50. On the other hand, the contact portion 130 is provided at the end of the support column 110 on the cord fixing member 60 side. The contact portion 130 fits into and contacts the recess 63 of the cord fixing member 60. In this case, as the cord storage member 50 is pulled up by the power cord 20, the contact portion 130 of the spacer 100 fits into the recess 63 of the cord fixing member 60. Furthermore, the spacer 100 and the cord fixing member 60 are in contact with each other, but are not fixed together, similar to the cord storage member 50 and the cord fixing member 60 in the first embodiment described above.

[0091] The connecting portion 120 and the contact portion 130 are provided with notches through which the power cord 20 is inserted and which hold the power cord 20 by light press-fitting. This allows the power cord 20 to be held in place by light press-fitting by hooking it into the notch and pushing it in.

[0092] As described above, the lighting device 1A according to this embodiment, like the lighting device 1 according to Embodiment 1, includes a mounting member 10, a power cord 20 extending from the mounting member 10, a socket 40 that receives power from the power cord 20, a lamp 3 that is detachably attached to the socket 40, a cord fixing member 60 to which a part of the power cord 20 is fixed, a shade 30 that houses the socket 40, the lamp 3 and the cord fixing member 60, and a cord storage member 50 arranged inside the shade 30 to store the power cord 20.

[0093] This configuration allows the power cord 20 to be stored inside the shade 30, making it possible to adjust the length of the power cord 20 without compromising the aesthetics.

[0094] Furthermore, since the lighting device 1A according to this embodiment has a spacer 100, the power cord 20 can be easily stored inside the shade 30 even if the length of the shade 30 is increased.

[0095] In addition, the external dimensions of the shade 30 are the same in the lighting device 1A according to this embodiment and the lighting device 1 in the above-described embodiment 1, but this is not limited to this. Furthermore, the length of the shade 30 may be 300 mm, 400 mm, etc., instead of 600 mm, or it may be longer than 600 mm.

[0096] (modified version) Although the lighting device according to the present invention has been described above based on Embodiments 1 and 2, the present invention is not limited to Embodiments 1 and 2.

[0097] For example, in embodiments 1 and 2 described above, the optional member 80 attached to the shade 30 was a solid cylindrical diffusion member, but it is not limited to this.

[0098] Specifically, as shown in Figures 11, 12, and 13, the optional member 80A attached to the shade 30 may be a baffle to prevent glare. Figures 11 and 12 are perspective views of the optional member 80A according to Modification 1. Figure 13 is a diagram showing the configuration of the optional member 80A according to Modification 1. In Figure 13, (a) is a plan view of the optional member 80A, (b) is a front view of the optional member 80A, and (c) is a bottom view of the optional member 80A. As shown in Figures 11, 12, and 13, the optional member 80A in this modification has a first cylindrical portion 81 and a second cylindrical portion 82 located inside the first cylindrical portion 81. The first cylindrical portion 81 and the second cylindrical portion 82 are connected by three connecting bridges. The optional member 80A is made of, for example, a black resin material. Although not shown, a screw groove is formed on the outer peripheral side of the optional member 80A for screwing it into the first opening 31 of the shade 30. Note that the left side view, right side view, and rear view of optional component 80A are all the same as those in Figure 13(b).

[0099] Furthermore, as shown in Figures 14, 15, 16, and 17, the optional member 80B attached to the shade 30 may be a lens that can produce a sparkling effect. Figures 14 and 15 are perspective views of the optional member 80B according to Modification 2. Figure 16 is a cross-sectional view of the optional member 80B according to Modification 2. Figure 17 is a diagram showing the configuration of the optional member 80B according to Modification 2. In Figure 17, (a) is a plan view of the optional member 80B, (b) is a front view of the optional member 80B, and (c) is a bottom view of the optional member 80B. As shown in Figures 14, 15, 16, and 17, the optional member 80B in this modification is a cylindrical transparent member with a recess 80a formed on the light-emitting side. The optional member 80B can be made of, for example, transparent acrylic resin. The left side view, right side view, and rear view of the optional member 80B are all the same as (b) in Figure 17.

[0100] Furthermore, as shown in Figures 18 and 19, the optional member 80C attached to the shade 30 may be a lens that can produce a greater sparkling effect. Figure 18 is a perspective view of the optional member 80C according to Modification 3. Figure 19 is a cross-sectional view of the optional member 80C according to Modification 3. As shown in Figures 18 and 19, the optional member 80C in this modification is a cylindrical foam rod having multiple foam-like pores (air layers) inside. The optional member 80C can be made of, for example, transparent acrylic resin.

[0101] Furthermore, in embodiments 1 and 2 described above, the optional member 80 was attached to the shade 30, but this is not limited to that. For example, the optional member 80D shown in Figures 20 and 21 is attached to the lamp 3, not the shade 30. Figures 20 and 21 are perspective views of the optional member 80D according to modified example 4. The optional member 80D is fixed to the lamp 3 by inserting its insertion wall 80b into the gap between the housing 3a and the lens 3c in the lamp 3. For this reason, the optional member 80D does not have screw threads. Also, the optional member 80D shown in Figures 20 and 21 is a baffle that prevents glare. The optional member 80D is made of, for example, a black resin material.

[0102] Furthermore, although an optional member 80 was attached to the shade 30 in the above embodiments 1 and 2, the lampshade 30 is not limited to this. In other words, the optional member 80 may not be attached to the shade 30, and the second opening 32 of the shade 30 may be open. In this case, the light emitted from the lamp 3 is directly irradiated through the second opening 32 of the shade 30.

[0103] Furthermore, in embodiments 1 and 2 described above, the lighting device 1 is mounted on a duct rail, but is not limited to this. For example, the lighting device 1 may be mounted on a ceiling hook. The ceiling hook is a power supply unit that supplies power to the lighting device 1, and is electrically connected to an external power source via wires, etc., on the back side of the ceiling. Commercial AC power is supplied to the ceiling hook. In this case, the mounting member of the lighting device 1 has a metal terminal (blade) that locks onto the ceiling hook, and by inserting the metal terminal into the hole (blade receiver) of the ceiling hook and rotating the mounting member, the lighting device 1 and the ceiling hook can be electrically and mechanically connected. As a result, the lighting device 1 can receive AC power from the ceiling hook. Note that the power supply unit that supplies power to the lighting device 1 is not limited to a duct rail and a ceiling hook, but may be a semi-recessed unit in the ceiling, etc.

[0104] Furthermore, although the shade 30 did not have light-transmitting properties in the above embodiments 1 and 2, the shade 30 may have light-transmitting properties. By having light-transmitting properties, the shade 30 can transmit light from the lamp 3. The light-transmitting shade 30 may be a transparent member that does not have diffusivity, or it may be a diffusive member that is both light-transmitting and diffusive. For example, the light-transmitting and diffusive shade 30 may be a milky white cylindrical diffusive member.

[0105] Furthermore, in embodiments 1 and 2 described above, the base of the lamp 3 was not a GX53 type base, but a base similar to a GX53 type base, but it is not limited to this. The base of the lamp 3 may be a GX53 type base. In this case, the external dimensions of the shade 30 will be larger. The base of the lamp 3 may also be an Edison-type E-type base (E-base). In this case, the socket 40 will have a socket function that is compatible with an E-type base.

[0106] Furthermore, in embodiments 1 and 2 described above, lamp 3 was an LED lamp using LEDs, but it is not limited to this. For example, lamp 3 may use a semiconductor laser or organic EL (Electro Luminescence), or it may be a fluorescent lamp or an incandescent light bulb.

[0107] Furthermore, the present invention also includes forms obtained by applying various modifications to each of the above embodiments that a person skilled in the art could conceive, and forms realized by arbitrarily combining the components and functions of each of the above embodiments without departing from the spirit of the present invention. In addition, the present invention also includes arbitrary combinations of one or more components in each of the multiple claims described in the claims at the time of filing the present application. Furthermore, when the cited claims described in the claims at the time of filing the present application are made into a multi-claim or multi-multi-claim that cites any multiple claims (for example, when each claim is made into a multi-claim or multi-multi-claim that cites all of the higher-level claims), all forms obtained by combinations of all claims included in that multi-claim or multi-multi-claim are also included in the present invention. [Explanation of symbols]

[0108] 1. 1A Lighting device 2 Lighting fixtures 3 lamps 10 Mounting components 20 Power cord 30 Shades 31 First opening 32 Second opening 40 sockets 50 Code storage member 51 Post 60 Cord fixing member 70 Lid 80, 80A, 80B, 80C, 80D Optional parts 100 Spacer

Claims

1. A lighting device that is suspended from building materials, A mounting member attached to the power supply unit installed on the aforementioned building material, A power cord extending from the aforementioned mounting member, A socket that receives power from the aforementioned power cord, A lamp that is detachably attached to the aforementioned socket, A cord fixing member to which a portion of the power cord is fixed, The socket, the lamp and the cord fixing member are housed in a shade, The shade includes a cord storage member that is arranged within the shade and stores the power cord, The aforementioned cord fixing member is provided on the mounting member side of the cord storage member. Lighting device.

2. The aforementioned shade is a long, cylindrical body, The shade has a first opening located at the end of the shade on the mounting member side in the longitudinal direction of the shade, and a second opening located at the end of the shade on the opposite side from the mounting member side in the longitudinal direction of the shade. The shade is fitted with a cover portion so as to close the first opening. The lighting device according to claim 1.

3. The aforementioned cord fixing member is fixed to the lid portion. The lighting device according to claim 2.

4. An optional member for controlling the light distribution of the light emitted from the lamp is attached to the second opening of the shade. The lighting device according to claim 2.

5. The cord storage member has a support column for holding the power cord. A lighting device according to any one of claims 1 to 4.

6. The power cord is wrapped around the support column. The lighting device according to claim 5.

7. The cord fixing member and the cord storage member are arranged in contact with each other. A lighting device according to any one of claims 1 to 4.

8. Furthermore, it includes a spacer positioned between the cord storage member and the cord fixing member. A lighting device according to any one of claims 1 to 4.

9. Lighting fixtures that are suspended from building materials, A mounting member to be attached to the aforementioned building material, A power cord extending from the aforementioned mounting member, A socket into which a lamp is detachably mounted and which is powered by the aforementioned power cord, A cord fixing member to which a portion of the power cord is fixed, The socket, the lamp and the shade covering the cord fixing member, The shade includes a cord storage member that is arranged within the shade and stores the power cord, The aforementioned cord fixing member is provided on the mounting member side of the cord storage member. Lighting fixtures.

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