Socket devices and lighting fixtures

Abstract

To provide a socket device which enables improvement of costs and workability and inhibits increase in a height of a lighting device while reducing the size of the lighting device on a projection surface, and to provide the lighting device.SOLUTION: A socket device 3 includes a first socket part 10 which is attached with a light source 2 having two power supply pins 2d. The first socket part 10 has: a socket body part 11 arranged with power supply pin connection terminals 21 with which the power supply pins 2d are electrically and mechanically connected; and a terminal board part 12 arranged with power line connection terminals 22 each of which is electrically connected to the power supply pin connection terminal 21 and with each of which a power line 6 for supplying electric power to the light source 2 is connected. The socket body part 11 and the terminal board part 12 are integrally formed and located at levels different in a direction that the light source 2 is attached.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a socket device and a lighting fixture, and more particularly to a socket device in which a lamp is attached as a light source, and a lighting fixture including this socket device. [Background technology]

[0002] Conventionally, lighting fixtures such as downlights to which a lamp having a GX53 type base is attached have been known (for example, Patent Document 1). As a lighting fixture of this type, lighting fixture 1X shown in Figs. 25 and 26 is known.

[0003] 25 and 26, a conventional lighting fixture 1X includes a socket 3X to which a light source 2X having a power supply pin is attached, a fixture body 4X to which the socket 3X is attached, and a terminal block 5X disposed outside the fixture body 4X. A power line (not shown) for supplying power to the lighting fixture 1X is connected to the terminal block 5X. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-199491 Summary of the Invention [Problem to be solved by the invention]

[0005] In a conventional lighting fixture 1X, the socket 3X and the terminal block 5X are located separately, and therefore the socket 3X and the terminal block 5X are connected by a lead wire (not shown). This requires the cost of the lead wire and the work required to connect the socket 3X and the terminal block 5X with the lead wire. For this reason, the conventional lighting fixture 1X has problems of being high in cost and poor in installation.

[0006] Furthermore, in the conventional lighting fixture 1X, the fixture body 4X that holds the socket 3X and the terminal block 5X are separated from each other, which also poses a problem of increasing the size of the lighting fixture 1X on a projection surface when viewed vertically.

[0007] One idea to address this issue is to mount the terminal block on top of the fixture body, thereby eliminating the need for lead wires and reducing the size of the lighting fixture on the projection surface. However, mounting the terminal block on top of the fixture body increases the height of the lighting fixture, which creates the problem of the lighting fixture becoming larger.

[0008] The present invention has been made to solve such problems, and aims to provide a socket device and a lighting fixture that can improve costs and ease of installation, reduce the size of the lighting fixture on the projection surface, and prevent the lighting fixture from becoming too tall. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, one aspect of the socket device according to the present invention is a socket device comprising a first socket portion to which a light source having two power feed pins is attached, the first socket portion having a socket body portion on which a power feed pin connection terminal is disposed to which the power feed pin is electrically and mechanically connected, and a terminal block portion on which a power line connection terminal is disposed that is electrically connected to the power feed pin connection terminal and to which a power line for supplying power to the light source is connected, the socket body portion and the terminal block portion being integrally constructed and positioned at different heights relative to the attachment direction of the light source.

[0010] Furthermore, one aspect of the lighting fixture according to the present invention comprises the above-described socket device and a fixture body to which the socket device is attached, wherein the second socket portion of the socket device and the fixture body are engaged by a locking member, and the second cover portion of the second socket portion protrudes from an opening hole provided in the fixture body. [Effects of the Invention]

[0011] This improves costs and ease of installation, reduces the size of the lighting fixture on the projection surface, and prevents the lighting fixture from becoming too tall. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of the lighting fixture according to the first embodiment as viewed from the floor side. [Figure 2] FIG. 2 is a perspective view of the lighting fixture according to the first embodiment as viewed from the side opposite to the floor side. [Figure 3] FIG. 3 is an exploded perspective view of the lighting fixture according to the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the lighting fixture according to the first embodiment. [Figure 5] FIG. 5 is a diagram showing an example in which a plurality of lighting fixtures are installed. [Figure 6] FIG. 6 is an enlarged cross-sectional view of the lighting fixture taken along line VI-VI in FIG. [Figure 7] FIG. 7 is a perspective view of the socket device according to the first embodiment when viewed from the side opposite to the floor side. [Figure 8] FIG. 8 is a perspective view of the socket device according to the first embodiment as viewed from the floor side. [Figure 9] FIG. 9 is a diagram illustrating a configuration of a socket device according to the first embodiment. [Figure 10] FIG. 10 is a perspective view of a socket device to which a power line is connected. [Figure 11] FIG. 11 is an exploded perspective view of the socket device to which the power line is connected, as viewed from the side opposite to the floor side. [Figure 12] FIG. 12 is an exploded perspective view of the socket device to which the power line is connected, as viewed from the floor side. [Figure 13] FIG. 13 is a cross-sectional perspective view of a socket device to which a power line passing through a rubber cover is connected. [Figure 14] FIG. 14 is a cross-sectional perspective view of a socket device to which a power line passing through a rubber cover is connected. [Figure 15]FIG. 15 is a top view showing a state in which the cover of the socket device to which the power line is connected is removed. [Figure 16] FIG. 16 is a perspective view of a lighting fixture according to the second embodiment. [Figure 17] FIG. 17 is an exploded perspective view of the lighting fixture according to the second embodiment. [Figure 18] FIG. 18 is a cross-sectional view of the lighting fixture according to the second embodiment. [Figure 19] FIG. 19 is a perspective view of a socket device and a rubber cover according to the second embodiment. [Figure 20] FIG. 20 is an exploded perspective view of a socket device according to the second embodiment. [Figure 21] FIG. 21 is a perspective view of the socket device according to the second embodiment as viewed from the floor side. [Figure 22] FIG. 22 is a perspective view of a rubber cover used in the lighting fixture according to the second embodiment. [Figure 23] FIG. 23 is a perspective view of the rubber cover used in the lighting fixture according to the second embodiment, as viewed from the back side. [Figure 24] FIG. 24 is a perspective view showing a modified example of the rubber cover. [Figure 25] FIG. 25 is a perspective view of a conventional lighting fixture. [Figure 26] FIG. 26 is a cross-sectional view of a conventional lighting fixture. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a specific example of the present invention. Therefore, the numerical values, components, the arrangement and connection of the components, steps, and the order of steps 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 that are not described in the independent claims that represent the highest concept of the present invention will be described as optional components.

[0014] Note that each figure is a schematic diagram and is not necessarily an exact illustration. Furthermore, in each figure, substantially the same components are assigned the same reference numerals, and redundant explanations are omitted or simplified. Furthermore, in each figure, the X-axis, Y-axis, and Z-axis represent the three axes of a three-dimensional Cartesian coordinate system. In this embodiment, the Z-axis direction is the vertical direction, and the direction perpendicular to the Z-axis (the direction parallel to the XY plane) is the horizontal direction. The X-axis and Y-axis are axes that are mutually orthogonal and are both orthogonal to the Z-axis. In this embodiment, the Z-axis direction is the vertical direction. Note that in this specification, the terms "up" and "down" do not necessarily refer to the upward direction (vertically upward) and downward direction (vertically downward) in absolute spatial recognition.

[0015] (Embodiment 1) First, the configuration of lighting fixture 1 according to the first embodiment will be described with reference to FIGS.

[0016] 1 and 2 are perspective views of a lighting fixture 1 according to embodiment 1. FIG. 1 is a view seen from the floor side, and FIG. 2 is a view seen from the opposite side from the floor side. FIG. 3 is an exploded perspective view of the lighting fixture 1, and FIG. 4 is a cross-sectional view of the lighting fixture 1. Note that FIG. 1 shows a state in which the light source 2 is not attached to the socket device 3. Also, FIG. 4 shows only the portion that appears in the cross section.

[0017] As shown in Figures 1 to 4, lighting fixture 1 includes a light source 2, a socket device 3 to which light source 2 is attached, a fixture body 4 to which socket device 3 is attached, and a top plate 5 that covers fixture body 4. Lighting fixture 1 is a recessed lighting fixture such as a downlight that is embedded in a construction material such as a ceiling of a building, and irradiates illumination light downward (toward a floor, wall, etc.). In this embodiment, lighting fixture 1 irradiates white light emitted from light source 2 as illumination light.

[0018] As shown in Fig. 4, the light source 2 has a housing 2a, a light-emitting unit 2b supported by the housing 2a, a light-transmitting cover 2c that covers the light-emitting unit 2b, and two power supply pins 2d that receive power for causing the light-emitting unit 2b to emit light. As shown in Fig. 3, the light source 2 is a lamp with a flat, thin structure that has an overall disk-like or flat shape. The light source 2 is also a lamp that has a base 2e. In this embodiment, the base 2e is part of the housing 2a.

[0019] The housing 2a supports the light-emitting unit 2b. The housing 2a may be made of either resin or metal. The housing 2a also contains a drive circuit 2f for driving the light-emitting unit 2b. The drive circuit 2f is a power supply circuit for causing the light-emitting unit 2b to emit light, and supplies a predetermined amount of power to the light-emitting unit 2b. For example, the drive circuit 2f converts AC power (e.g., commercial AC power of 100V) received via the power feed pin 2d into DC power and supplies the DC power to the light-emitting unit 2b.

[0020] The light emitting unit 2b emits light by power supplied from the drive circuit 2f. The light emitting unit 2b emits, for example, white light. In this case, the light source 2 irradiates white light as illumination light.

[0021] In this embodiment, the light-emitting unit 2b is composed of an LED. Therefore, the light source 2 is an LED lamp. As an example, the light-emitting unit 2b has a substrate and one or more LED elements mounted on the substrate. The LED elements may be surface-mounted LED packages or LED chips. If the LED elements are LED chips, the LED chips are covered with a sealing member. In this case, if a blue LED chip that emits blue light is used as the LED chip, the blue LED chip is sealed with a sealing member made of a resin material containing a yellow phosphor. This allows white light to be emitted from the sealing member. In this embodiment, the optical axis of the light source 2 when attached to the socket device 3 is in the Z-axis direction.

[0022] The light-transmitting cover 2c is a light-transmitting member having light-transmitting properties. Therefore, light incident on the inner surface of the light-transmitting cover 2c passes through the light-transmitting cover 2c and is extracted to the outside of the light-transmitting cover 2c. The light-transmitting cover 2c is attached to the housing 2a so as to cover the light-emitting unit 2b. Specifically, the light-transmitting cover 2c is attached to the opening edge of the opening of the housing 2a.

[0023] The light-transmitting cover 2c can be made of a light-transmitting resin material such as acrylic or polycarbonate, or a light-transmitting material such as glass. The light-transmitting cover 2c is a diffusion cover having light diffusibility, but may also be a transparent cover that does not have light diffusibility.

[0024] The power feed pins 2d shown in Fig. 3 are conductive pins that receive power from outside the light source 2 to cause the light-emitting unit 2b to emit light. For example, two power feed pins 2d receive AC power from the socket device 3. The two power feed pins 2d and the drive circuit are electrically connected by lead wires (not shown) housed in the housing 2a, and the AC power received by the two power feed pins 2d is supplied to the drive circuit via the lead wires. Each power feed pin 2d is a pin with a T-shaped cross section and a disc-shaped enlarged diameter portion at its tip.

[0025] The two power feed pins 2d are connection pins for connecting the light source 2 to the socket device 3. Each power feed pin 2d is electrically and mechanically connected to the socket device 3. As will be described in detail later, each power feed pin 2d is engaged with a pin receiving hole 11a (see FIG. 1) formed in a socket 10 of the socket device 3, and is electrically and mechanically connected to a terminal board 20 (not shown in FIGS. 1 to 4) arranged on the socket 10. Furthermore, by connecting the power feed pins 2d to the socket device 3, the light source 2 is held in the socket device 3.

[0026] The two power feed pins 2d may be part of the base 2e. The base 2e is, for example, a GX53 type base. Therefore, as shown in FIGS. 3 and 4, the base 2e has a cylindrical protrusion 2g with a bottom. The protrusion 2g is provided on the surface of the housing 2a opposite to the light-transmitting cover 2c. The drive circuit 2f is housed in the protrusion 2g. Furthermore, the protrusion 2g forms a step on the surface of the housing 2a opposite to the light-transmitting cover 2c.

[0027] As shown in Fig. 3, the two feed pins 2d are provided on a stepped surface one step below the stepped portion. That is, the two feed pins 2d are provided on either side of the protruding portion 2g. Specifically, the two feed pins 2d are arranged around the protruding portion 2g at 180-degree intervals. That is, the two feed pins 2d are arranged in opposing positions across the protruding portion 2g.

[0028] The light source 2 configured as above is attached to the socket device 3 as shown in Fig. 4. For example, when the lighting fixture 1 is installed on the ceiling, the light source 2 is attached to the socket device 3 so that the translucent cover 2c faces the floor (i.e., so that the two power supply pins 2d face the ceiling). Therefore, the attachment direction of the light source 2, which is the direction in which the light source 2 is attached to the socket device 3, is the vertical direction (Z-axis direction).

[0029] In this embodiment, the light source 2 is detachably attached to the socket device 3. That is, the light source 2 can be attached to and detached from the socket device 3. Specifically, the light source 2 can be attached to the socket device 3 by rotating the light source 2 about the XY plane as the plane of rotation. For example, the light source 2 can be attached to the socket device 3 by gripping the light-transmitting cover 2c of the light source 2 with one hand, inserting the power supply pin 2d of the light source 2 into the pin receiving hole 11a of the first socket portion 10, and rotating the light source 2 clockwise. On the other hand, when removing the light source 2 from the socket device 3, the light source 2 can be removed from the socket device 3 by rotating the light source 2 counterclockwise.

[0030] As shown in FIGS. 3 and 4 , the socket device 3 has a socket function of holding the light source 2 and supplying power to the light source 2. Specifically, the socket device 3 has a socket function compatible with a GX53-type base. In this embodiment, the socket device 3 not only has a socket function, but also functions as a terminal block to which a power line 6 for supplying power from a power source is connected. Specifically, the power line 6 supplies AC power to the socket device 3 as the power source. As an example, the power line 6 is a VVF cable, but is not limited to this.

[0031] In this embodiment, the socket device 3 is configured to allow two power lines 6 to be connected. Specifically, two power lines 6, a first power line 6a and a second power line 6b, are connected to the socket device 3. The first power line 6a is a power line that receives AC power supplied to the lighting fixture 1 from outside the lighting fixture 1. Meanwhile, the second power line 6b is a power line that transmits AC power from the lighting fixture 1 to outside the lighting fixture 1. The first power line 6a is connected to, for example, a commercial AC power source. Therefore, the lighting fixture 1 receives commercial AC power (e.g., AC 100V) via the first power line 6a. Each of the first power line 6a and the second power line 6b is configured by a pair of conductive wires. The pair of conductive wires is covered with a protective tube.

[0032] Furthermore, as shown in FIG. 5, when multiple lighting fixtures 1 are installed on a ceiling 100, the second power line 6b serves as a feeder wiring for supplying AC power from one of two adjacent lighting fixtures 1 to the other. For example, in FIG. 5, the first power line 6a of one of the two adjacent lighting fixtures 1, a first lighting fixture 1a, is connected to a commercial AC power supply (system power supply). Furthermore, the second power line 6b of the first lighting fixture 1a serves as a feeder wiring. That is, the second power line 6b connected to the first lighting fixture 1a is connected to the second lighting fixture 1b adjacent to the first lighting fixture 1a. That is, in the two adjacent lighting fixtures, the first lighting fixture 1a and the second lighting fixture 1b, the AC power received by the first lighting fixture 1a is supplied to the second lighting fixture 1b via the second power line 6b. In this way, when multiple lighting fixtures 1 are installed, AC power from the commercial AC power supply can be supplied sequentially to adjacent lighting fixtures 1 via the second power line 6b, which serves as a feeder wiring.

[0033] The first power line 6a and the second power line 6b are both connected to the socket device 3 of the lighting fixture 1. The specific configuration of the socket device 3 will be described later.

[0034] As shown in Fig. 4, the socket device 3 is fixed to the fixture body 4. Specifically, as shown in Fig. 6, the socket device 3 is fixed to the fixture body 4 by a locking member 7. Fig. 6 is an enlarged cross-sectional view of the lighting fixture 1 taken along line VI-VI in Fig. 2. Note that Fig. 6 is a cross-sectional view taken along a plane passing through the locking member 7 in Fig. 2.

[0035] 3 and 6, in this embodiment, the locking member 7 is a screw. However, the locking member 7 is not limited to a screw and may be a caulking pin or the like, or may be a fitting structure with recesses and protrusions provided on the socket device 3 and the instrument body 4 themselves. In other words, the locking member 7 may be anything that can lock and fix the socket device 3 and the instrument body 4 together.

[0036] As shown in FIGS. 1 to 3, the fixture body 4 is a cylindrical frame member through which light emitted from the light source 2 passes. The light emitted from the light source 2 passes through the inside of the fixture body 4 and is emitted to the outside of the fixture body 4. The fixture body 4 may also function as a reflective member that reflects the light emitted from the light source 2. In this case, the inner surface of the fixture body 4 is a light-reflecting surface.

[0037] As shown in FIG. 3, the appliance main body 4 is a cylindrical frame with a bottom and an opening 4a formed in the bottom. The opening 4a is, for example, circular. As shown in FIG. 4, a part of the socket device 3 protrudes from the opening 4a of the appliance main body 4. In this embodiment, the second cover portion 32 of the second socket portion 30 of the socket device 3 protrudes from the opening 4a of the appliance main body 4. In other words, the second cover portion 32 is exposed from the opening 4a of the appliance main body 4. In this embodiment, the diameter of the opening 4a and the outer diameter of the second cover portion 32 are approximately the same. Therefore, the second cover portion 32 is configured to fit into the opening 4a of the appliance main body 4.

[0038] The appliance body 4 is made of a metal material such as aluminum or iron, etc. The appliance body 4 is not limited to a metal material and may be made of a resin material such as polybutylene terephthalate (PBT).

[0039] As shown in FIGS. 2 to 4 , the fixture body 4 is covered with a top plate 5. Specifically, the top plate 5 covers a portion of the outer circumferential surface of the fixture body 4 and the bottom of the fixture body 4. The top plate 5 also covers the portion of the socket device 3 that protrudes from the opening 4a of the fixture body 4 (in this embodiment, the second cover portion 32 of the second socket portion 30 of the socket device 3). In other words, the top plate 5 covers the fixture body 4 and the socket device 3. The top plate 5 is made of metal and is configured from a metal material. For example, the top plate 5 is formed into a predetermined shape by subjecting a metal plate such as a steel plate to press working, bending working, and the like. In this way, covering the fixture body 4 and the socket device 3 with the metal top plate 5 can ensure quasi-fire resistance. In other words, providing the metal top plate 5 can suppress the spread of fire in the event of a fire.

[0040] 2 and 3, in this embodiment, the top plate 5 has a first top plate portion 5a that covers the socket device 3 and the bottom of the fixture body 4, and a pair of second top plate portions 5b that cover the outer peripheral surface of the fixture body 4. In this way, by covering the outer peripheral surface of the fixture body 4 with the top plate 5, it is possible to further improve the quasi-fire resistance.

[0041] The first top plate portion 5a covers at least a portion of the second cover portion 32 of the socket device 3 that protrudes from the opening 4a of the fixture body 4. In this embodiment, the first top plate portion 5a covers the entire second cover portion 32. Specifically, it covers the entire portion of the socket device 3 that protrudes from the opening 4a of the fixture body 4. Therefore, the socket device 3 is covered by the first top plate portion 5a and is not exposed from the first top plate portion 5a. In this embodiment, the first top plate portion 5a has an overall hat shape. In other words, the first top plate portion 5a has a bottomed cylindrical shape with a flange portion at the edge of the opening. The first top plate portion 5a can be formed, for example, by drawing.

[0042] The pair of second top plate portions 5b are connected to the flange portion of the first top plate portion 5a. The pair of second top plate portions 5b extend from the first top plate portion 5a toward the floor along the outer circumferential surface of the appliance body 4. In other words, the pair of second top plate portions 5b are formed to serve as legs of the table top 5. The pair of second top plate portions 5b are formed opposite each other so as to sandwich the appliance body 4 therebetween.

[0043] As shown in FIG. 2, a mounting spring 8 is fixed to the top plate 5. Specifically, the mounting spring 8 is fixed to a pair of second top plate portions 5b of the top plate 5. In the present embodiment, a mounting spring 8 is fixed to each of the pair of second top plate portions 5b. Thus, a pair of mounting springs 8 are fixed to the top plate 5. The mounting spring 8 is an elastic member for attaching the lighting fixture 1 to a mounting portion such as a ceiling, and has, for example, a plate spring structure. The mounting spring 8 is formed, for example, from a long metal plate.

[0044] The mounting spring 8 is a mounting member for mounting the lighting fixture 1 to a mounting portion such as a ceiling. As an example, the mounting spring 8 is an elastic member, such as a leaf spring made of a long metal plate. For example, when placing the lighting fixture 1 in an opening in the ceiling, the flange portion of the fixture body 4 is engaged with the ceiling surface, and the mounting spring 8 is elastically deformed between the side surface of the fixture body 4 and the inner surface of the opening in the ceiling, thereby fixing the lighting fixture 1 to the opening in the ceiling. In other words, the spring restoring force of the mounting spring 8 can be used to fix the lighting fixture 1 to the ceiling.

[0045] An opening 5c ​​is provided on the side of the top plate 5 at a portion that covers the second cover portion 32 of the socket device 3. Specifically, the opening 5c ​​is provided on the side of the cylindrical portion of the first top plate portion 5a of the top plate 5. A power line 6 is inserted through the opening 5c. Therefore, the opening 5c ​​communicates with an insertion hole 32a (see FIG. 3) provided on the side of the second cover portion 32. The socket device 3 in this embodiment is configured to allow two power lines 6 to be connected, and therefore two openings 5c are provided on the top plate 5 corresponding to the two power lines 6. Note that, as shown in FIG. 3, the openings 5c are formed by cutting out the side of the cylindrical portion of the first top plate portion 5a, but this is not limiting. For example, the openings 5c may be through holes that are not cut out.

[0046] A rubber cover 9 (rubber packing) is attached to the second socket portion 30 of the socket device 3. Specifically, the rubber cover 9 is attached to the second cover portion 32 of the second socket portion 30 in the socket device 3. In this embodiment, the rubber cover 9 is attached to the side surface of the second cover portion 32.

[0047] 2, the rubber cover 9 is fitted into an opening 5c ​​provided in the top plate 5 and is held by the top plate 5. A part of the rubber cover 9 is covered by the first top plate portion 5a of the top plate 5, but another part of the rubber cover 9 protrudes outward from the opening 5c ​​of the top plate 5.

[0048] The rubber cover 9 is a protective cover that protects the power line 6. For example, the rubber cover 9 is a bush that covers the power line 6. The rubber cover 9 is an insulating cover made of an insulating resin material. For example, the rubber cover 9 has rubber elasticity and is made of an elastomer such as silicone rubber or urethane rubber. However, the material of the rubber cover 9 is not limited to these materials.

[0049] The socket device 3 in this embodiment is configured to be able to connect two power lines 6. Therefore, rubber covers 9 are provided at two locations on the second cover portion 32 of the socket device 3, one for each of the two power lines 6. In other words, two rubber covers 9 are provided corresponding to the two openings 5c of the top plate 5.

[0050] Each rubber cover 9 has a cylindrical shape with a bottom and includes a cylindrical portion 91 and a bottom portion 92. The cylindrical portion 91 is a cylindrical peripheral wall portion that surrounds the entire circumference of the power line 6 and is a cylindrical body with an approximately rectangular opening. Note that the cylindrical portion 91 may have a circular cylindrical opening or the like. One opening of the cylindrical portion 91 is a wire insertion port into which the power line 6 is inserted. The other opening of the cylindrical portion 91 is closed by a bottom portion 92. The bottom portion 92 is a covering portion that covers the side surface of the second cover portion 32 of the socket device 3. Specifically, the bottom portion 92 is in surface contact with a flat portion that is formed by cutting out a portion of the outer periphery of the second cover portion 32. The bottom portion 92 also has a bulge portion that bulges outward from the end of the cylindrical portion 91 and serves as a portion that engages with the peripheral portion of the opening 5c ​​of the top plate 5.

[0051] 3, the rubber cover 9 has a power line insertion portion 9a through which the power line 6 connected to the socket device 3 is inserted, and a power line release portion 9b into which a release jig is inserted when removing the power line 6 from the socket device 3. In this embodiment, the power line insertion portion 9a and the power line release portion 9b are each part of the bottom portion 92 of the rubber cover 9.

[0052] The power line insertion portion 9a of the rubber cover 9 faces an insertion hole 32a provided on a side surface of the second cover portion 32 of the socket device 3. When connecting the power line 6 to the socket device 3, the power line 6 is inserted into the insertion hole 32a of the socket device 3 by penetrating the bottom portion 92 of the rubber cover 9. Specifically, the tips of the pair of conductive wires of the power line 6 are pierced into the bottom portion 92 of the rubber cover 9, and the power line 6 breaks the power line insertion portion 9a of the bottom portion 92, so that the pair of conductive wires of the power line 6 are inserted into the insertion hole 32a of the socket device 3. By penetrating the pair of conductive wires of the power line 6 through the bottom portion 92 in this way, the power line insertion portion 9a of the bottom portion 92 becomes an insertion hole (power line insertion hole) through which the power line 6 is inserted. Specifically, the power line insertion portion 9a of the rubber cover 9 becomes two insertion holes corresponding to the pair of conductive wires.

[0053] The power line release portion 9b of the rubber cover 9 faces the power line release hole 32b provided on the side surface of the second cover portion 32 of the socket device 3. When removing the power line 6 from the socket device 3, a release jig such as a flathead screwdriver is inserted into the cylindrical portion 91 of the rubber cover 9 and penetrates the bottom portion 92 of the rubber cover 9, so that the release jig is inserted into the power line release hole 32b of the socket device 3. Specifically, the release jig is thrust into the bottom portion 92 of the rubber cover 9 and breaks the bottom portion 92 with the release jig, so that the release jig is inserted into the power line release hole 32b of the socket device 3. By penetrating the release jig through the bottom portion 92 in this way, the power line insertion portion 9a of the bottom portion 92 becomes an insertion hole (release jig insertion hole) through which the release jig is inserted.

[0054] In this manner, in the present embodiment, by breaking through the bottom portion 92 of the rubber cover 9, a power line insertion hole through which the power line 6 is inserted and a release jig insertion hole through which the release jig is inserted are formed in the rubber cover 9. Therefore, the thickness of the bottom portion 92 is preferably thin so that the power line 6 or the release jig can easily break through the bottom portion 92; for example, the thickness of the bottom portion 92 is preferably equal to or less than the thickness of the tubular portion 91.

[0055] The rubber cover 9 does not have to have the bottom 92. For example, the rubber cover 9 may have only the cylindrical portion 91 of the cylindrical portion 91 and the bottom 92. In this case, since there is no need to pierce the bottom 92 of the rubber cover 9 with the power line 6 or the release jig, the power line insertion portion 9a and the power line release portion 9b in the rubber cover 9 are openings (insertion holes) in the cylindrical portion 91. In this case, the power line insertion portion 9a and the power line release portion 9b are a single common insertion hole formed in the rubber cover 9 from the beginning. However, since the rubber cover 9 has the bottom 92, insertion holes can be formed in the bottom 92 where and when necessary, which effectively prevents foreign matter such as dust from entering the socket device 3.

[0056] The top plate 5 configured as described above is fixed to the fixture body 4. As shown in FIGS. 1 and 6, in this embodiment, the top plate 5 is also fixed to the fixture body 4 by a locking member 7 that secures the socket device 3 and the fixture body 4. That is, as shown in FIG. 6, the socket device 3, the fixture body 4, and the top plate 5 are fastened together and fixed by the locking member 7. In this case, the locking member 7 is inserted through the through hole 31a of the first cover portion 31 of the socket device 3, the through hole 4b provided in the flange portion of the fixture body 4, and the through hole 5d provided in the flange portion of the first top plate portion 5a of the top plate 5. Therefore, the through hole 31a of the socket device 3, the through hole 4b of the fixture body 4, and the through hole 5d of the top plate 5 are communicated with each other. As shown in FIGS. 3 and 6, the through hole 4b of the fixture body 4 and the through hole 5d of the top plate 5 are circular screw holes through which the locking member 7, which is a screw, is inserted.

[0057] Next, a specific configuration of the socket device 3 will be described with reference to FIGS. 1 to 4 and FIGS. 7 to 15. FIG. 7 is a perspective view of the socket device 3 according to the first embodiment, as viewed from the side opposite the floor. FIG. 8 is a perspective view of the socket device 3 as viewed from the floor. FIG. 9 is a diagram illustrating the configuration of the socket device 3. In FIG. 9, (a) is a top view, (b) is a bottom view, (c) is a cross-sectional view taken along line IXc-IXc in (b), and (d) is a cross-sectional view taken along line IXd-IXd in (a). FIG. 10 is a perspective view of the socket device 3 to which a power line 6 is connected, and FIGS. 11 and 12 are exploded perspective views of the socket device 3 to which the power line 6 is connected. FIG. 11 is a view viewed from the side opposite the floor, and FIG. 12 is a view viewed from the floor. FIGS. 13 and 14 are cross-sectional perspective views of the socket device 3 to which the power line 6 passing through a rubber cover 9 is connected. Fig. 13 shows a state cut along the XZ cross section, and Fig. 14 shows a state cut along the YZ cross section. Note that the second socket portion 30 is omitted in Fig. 14. Fig. 15 is a top view showing the state in which the second socket portion 30 of the socket device 3 connected to the power line 6 has been removed.

[0058] The socket device 3 functions as a socket into which the light source 2 is attached. Specifically, as shown in Figures 7 to 15, the socket device 3 includes a first socket portion 10 into which the light source 2 is attached, a terminal board 20 to which the power line 6 is connected, and a second socket portion 30 that covers the first socket portion 10.

[0059] The first socket unit 10 is a lower cover that serves as the first housing of the socket device 3. The second socket unit 20 is an upper cover that serves as the second housing of the socket device 3. In this embodiment, the first socket unit 10 and the second socket unit 20 form the entire housing of the socket device 3. The first socket unit 10 and the second socket unit 20 are outer components of the socket device 3.

[0060] As shown in FIGS. 9 and 11, the first socket portion 10 includes a socket body portion 11, a terminal block portion 12, and a connection portion 13 that connects the socket body portion 11 and the terminal block portion 12 together.

[0061] The socket body 11 and the terminal block 12 are integrally formed. Specifically, the socket body 11 and the terminal block 12 are integrally formed from an insulating resin material. In this embodiment, the socket body 11, the terminal block 12, and the connection portion 13 are integrally formed. That is, the socket body 11, the terminal block 12, and the connection portion 13 are integrally formed from a resin material. Therefore, the first socket 10 is a single resin molded product made from a resin material. In this case, since the light source 2 is attached to the first socket 10, it is preferable that the first socket 10 be made from a resin material that emphasizes strength. For this reason, in this embodiment, the first socket 10 is made from polycarbonate (PC).

[0062] The first socket portion 10 has a hat shape as a whole. Specifically, the first socket portion 10 has a cylindrical shape with a bottom and a flange portion at the opening.

[0063] The socket body 11 is a portion corresponding to the flange portion of the first socket portion 10, and is plate-shaped and frame-shaped. In this embodiment, the socket body 11 is plate-shaped and annular.

[0064] 4 and 9, the socket body 11 is provided with two pin receiving holes 11a into which the two power feed pins 2d of the light source 2 are engaged. The two pin receiving holes 11a correspond one-to-one to the two power feed pins 2d of the light source 2. As shown in (b) of FIG. 9, the two pin receiving holes 11a are provided at 180-degree intervals along the circumferential direction of the socket body 11. Specifically, the two pin receiving holes 11a are provided at positions facing each other with the terminal block 12 in between.

[0065] Each pin receiving hole 11a is composed of a large-diameter circular hole and an elongated hole continuing from the circular hole. The elongated hole of the pin receiving hole 11a extends in the direction of rotation when the light source 2 is rotated to attach it to the socket device 3. For example, when attaching the light source 2 to the socket device 3, the large-diameter portion of the power feed pin 2d of the light source 2 is inserted into the circular hole of the pin receiving hole 11a, and then the light source 2 is rotated to move the power feed pin 2d deeper into the pin receiving hole 11a along the elongated hole. As a result, the power feed pin 2d is engaged with the pin receiving hole 11a and electrically connected to the terminal board 20.

[0066] Furthermore, the socket body 11 is provided with through holes 11b through which the locking members 7, which are screws, are inserted. In this embodiment, the socket body 11 is provided with four through holes 11b.

[0067] 9 and 11, the terminal block 12 is a plate-like portion that corresponds to the bottom of the first socket 10. In this embodiment, the terminal block 12 is in the form of a circular flat plate.

[0068] When the socket device 3 is viewed from the mounting direction of the light source 2 (the Z-axis direction in this embodiment), the socket body 11 is located outside the terminal block 12, and the terminal block 12 is located inside the socket body 11. In this embodiment, the annular socket body 11 surrounds the terminal block 12. In other words, the socket body 11 is located on the outer periphery of the first socket portion 10.

[0069] Connection portion 13 is a portion corresponding to the side wall portion of first socket portion 10 and is cylindrical. In this embodiment, connection portion 13 is cylindrical. Note that connection portion 13 may be a part of socket body 11 or a part of terminal block 12.

[0070] 9(c) and 11, the connection portion 13 is located between the socket main body 11 and the terminal block 12 in the mounting direction of the light source 2 (the Z-axis direction in this embodiment). Therefore, the socket main body 11 and the terminal block 12 are located at different heights in the mounting direction of the light source 2 (the Z-axis direction in this embodiment). In other words, the connection portion 13, the socket main body 11, and the terminal block 12 form the first socket portion 10 in a stepped shape.

[0071] In this embodiment, the socket main body 11 is located closer to the light source 2 than the terminal block 12. In other words, the terminal block 12 is located on the opposite side of the socket main body 11 from the light source 2. As a result, as shown in Figures 8, 9 and 12, a recess 10a is formed in the first socket 10, where the portion of the terminal block 12 is recessed on the side opposite to the light source 2.

[0072] As shown in FIG. 4, a portion of the light source 2 is housed in the recess 10a of the first socket portion 10. Specifically, the protrusion 2g of the light source 2 is housed in the recess 10a of the first socket portion 10. In this case, at least the portion of the housing 2a of the light source 2 that constitutes the protrusion 2g is preferably made of an insulating resin material. In addition, the first socket portion 10 that surrounds the protrusion 2g of the light source 2 is preferably made of resin. This allows for improved insulation around the light source 2.

[0073] As shown in FIGS. 11 , 14 , and 15 , a terminal board 20 is disposed in the first socket portion 10. The terminal board 20 is a conductive board made of a conductive material such as metal. For example, the terminal board 20 is made of a metal plate such as a copper alloy. The terminal board 20 is made of one or more metal plates. In this embodiment, the terminal board 20 is made of a plurality of metal plates. Each of the plurality of metal plates constituting the terminal board 20 is formed into a predetermined shape by bending or the like and is connected to one another. For example, the plurality of metal plates constituting the terminal board 20 are connected to one another by a sandwiching structure. The plurality of metal plates constituting the terminal board 20 may be made of the same metal material or different metal materials.

[0074] The terminal board 20 has a function of supplying power received via the power line 6 to the power feed pin 2d of the light source 2. Specifically, the terminal board 20 has a power feed pin connection terminal 21 to which the power feed pin 2d of the light source 2 is electrically and mechanically connected, and a power line connection terminal 22 to which the power line 6 for supplying power to the light source 2 is connected.

[0075] In this embodiment, power feed pin connection terminal 21 is a part (power feed pin connection terminal portion) of terminal board 20. Similarly, power supply line connection terminal 22 is also a part (power supply line connection terminal portion) of terminal board 20. Therefore, power feed pin connection terminal 21 and power supply line connection terminal 22 are electrically connected as parts of the same terminal board 20.

[0076] Power feed pin connection terminals 21 are arranged in socket body 11. Meanwhile, power line connection terminals 22 are arranged in terminal block 12. Because socket body 11 and terminal block 12 are arranged at different heights, power feed pin connection terminals 21 and power line connection terminals 22 are also arranged at different heights. Therefore, terminal board 20 is arranged so as to straddle connection portion 13 in first socket 10.

[0077] The power feed pin connection terminals 21 located in the socket body 11 are located near the two pin receiving holes 11a formed in the socket body 11. Therefore, the terminal board 20 has two power feed pin connection terminals 21. In other words, the two power feed pin connection terminals 21 and the two power feed pins 2d of the light source 2 correspond one-to-one.

[0078] Additionally, metal springs 23 are provided near each of the two power feed pin connection terminals 21. Metal springs 23 elastically hold the power feed pin 2d of the light source 2 inserted into the pin receiving hole 11a. Specifically, when attaching the light source 2 to the socket device 3, metal springs 23 use their elasticity to hold the large diameter portion of the power feed pin 2d that has been inserted into the pin receiving hole 11a and moved to the back of the elongated hole of the pin receiving hole 11a.

[0079] This allows the user to feel a click (a sense of engagement) when attaching the light source 2 to the socket device 3, letting them know that the power feed pin 2d is held in the pin receiving hole 11a. In other words, the user knows that the light source 2 is attached to the socket device 3. Furthermore, because the power feed pin 2d is held by the metal spring 23, the power feed pin 2d can remain connected to the power feed pin connection terminal 21 without falling out of the pin receiving hole 11a. The metal spring 23 is formed into a predetermined shape by bending a metal plate or the like. As an example, the metal spring 23 has a bent portion that is bent in a V shape so as to be convex toward the pin receiving hole 11a.

[0080] The power line 6 to be inserted into the socket device 3 is placed in the power line connection terminals 22 located on the terminal block portion 12. The power line connection terminals 22 correspond to a pair of conductive wires that make up the power line 6. In other words, the terminal board 20 has two power line connection terminals 22 for one power line 6. These two power line connection terminals 22 are arranged adjacent to each other as a pair.

[0081] The power line 6 inserted into the socket device 3 through an insertion hole 32a formed in the side surface of the socket device 3 is connected to the power line connection terminal 22. As shown in FIGS. 11 and 14, the socket device 3 has a power line release member 24 (release button) for releasing the connection between the power line 6 and the power line connection terminal 22 when removing the power line 6 from the socket device 3. The power line release member 24 is made of, for example, an insulating resin material. The space between the plate portion 22a of the power line connection terminal 22 and the power line release member 24 is a power line insertion port 25 (power line inlet) into which the power line 6 is inserted. In other words, the terminal block portion 12 is provided with the power line insertion port 25.

[0082] The power line 6 inserted into the socket device 3 is connected to the power line connection terminal 22 through the power line insertion port 25. In this embodiment, the power line connection terminal 22 has a quick-connect terminal structure 22b, and the power line 6 is connected to the quick-connect terminal structure 22b. The quick-connect terminal structure 22b is a part of the metal plate that constitutes the terminal board 20 formed into a leaf spring shape, and holds the power line 6 inserted into the socket device 3. Specifically, the power line 6 is elastically held in the power line connection terminal 22 by the spring elastic force of the quick-connect terminal structure 22b. The quick-connect terminal structure 22b can be formed by bending, folding, cutting, or other processes on a part of the metal plate that constitutes the terminal board 20.

[0083] When it is desired to remove the power line 6 held by the quick-connect terminal structure 22b from the socket device 3, the power line release member 24 is moved by the release jig. For example, when removing the power line 6 held by the quick-connect terminal structure 22b from the socket device 3, the release jig is used to break through the power line release portion 9b (see FIG. 3) of the bottom 92 of the rubber cover 9, and the release jig is inserted into the power line release hole 32b of the socket device 3 and pressed against the power line release member 24. This pushes in the power line release member 24, reducing the force with which the quick-connect terminal structure 22b holds the power line 6, and the power line 6 is released from the quick-connect terminal structure 22b. This allows the power line 6 to be removed from the socket device 3, and the connection between the power line 6 and the terminal board 20 (power line connection terminal 22) is released. 10 and 13, a portion of the power line releasing member 24 is inserted into and fitted into the power line releasing hole 32b of the socket device 3, but this is not limited to this. For example, the power line releasing member 24 may be positioned at a position set back inward from the power line releasing member 24 as long as it is within the reach of the releasing jig.

[0084] 15, when the socket device 3 is viewed from the mounting direction of the light source 2, the insertion direction of the power line 6 into the power line insertion port 25 is perpendicular to the line L1 connecting the two power feed pin connection terminals 21. Since each of the two power feed pin connection terminals 21 has a pin receiving hole 11a, the insertion direction of the power line 6 is perpendicular to the line L1 connecting the two pin receiving holes 11a.

[0085] In this embodiment, one power line releasing member 24 covers a pair of conductive wires that make up the power line 6. Therefore, one power line releasing member 24 and a pair of power line connecting terminals 22 form two power line insertion openings 25.

[0086] Furthermore, a pair of power line connection terminals 22 are arranged at two locations on the terminal block portion 12 so that two power lines 6 can be connected to the socket device 3. That is, in this embodiment, the terminal board 20 has four power line connection terminals 22. The power line 6 connected to at least one of the pair of power line connection terminals 22 arranged at two locations is a feeder wiring for feeding power from the socket device 3 to another socket device 3. Specifically, a second power line 6b, which is a feeder wiring, is connected to one of the pair of power line connection terminals 22 arranged at two locations, and a first power line 6a, which is connected to a commercial AC power source, is connected to the other of the pair of power line connection terminals 22 arranged at two locations.

[0087] Line L2 connecting the two power line connection terminals 22 is perpendicular to line L1 connecting the two power feed pin connection terminals 21. In this embodiment, a power line disconnecting member 24 is provided for each of the pair of power line connection terminals 22. Therefore, two power line disconnecting members 24 are provided. In this case, the line connecting the two power line disconnecting members 24 is perpendicular to line L1 connecting the two power feed pin connection terminals 21. Furthermore, since each of the two power feed pin connection terminals 21 has a pin receiving hole 11a, line L2 connecting the two power line connection terminals 22 (the line connecting the two power line disconnecting members 24) is perpendicular to line L1 connecting the two pin receiving holes 11a. In this embodiment, line L2 connecting the two power line connection terminals 22 is parallel to the insertion direction of the power line 6 into the power line insertion port 25.

[0088] 7 to 12, the second socket portion 30 that covers the first socket portion 10 has a first cover portion 31 (socket body portion cover portion) that covers the socket body portion 11, and a second cover portion 32 (terminal block portion cover portion) that covers the terminal block portion 12. In addition, the second socket portion 30 also covers the terminal board 20 arranged in the first socket portion 10.

[0089] The first cover portion 31 and the second cover portion 32 are integrally formed. Specifically, the first cover portion 31 and the second cover portion 32 are integrally formed from an insulating resin material. Therefore, the second socket portion 30 is a single resin-molded product formed from a resin material. The resin material of the second socket portion 30 may be the same as or different from the resin material of the first socket portion 10. In this case, since the second socket portion 30 does not require as much strength as the first socket portion 10, the resin material of the second socket portion 30 should be selected with an emphasis on suppressing the occurrence of a tracking phenomenon caused by a large current flowing through the terminal board 20. In this embodiment, the resin material of the second socket portion 30 is selected from this perspective. Specifically, the resin material of the second socket portion 30 is formed from polypropylene (PP).

[0090] 11, the second socket portion 30 has a hat shape overall, similar to the first socket portion 10. Specifically, the second socket portion 30 has a cylindrical shape with a bottom and a flange portion at the opening.

[0091] The first cover part 31 is a part that corresponds to the flange part of the second socket part 30 and is a flat frame body. In this embodiment, the first cover part 31 is annular. The second cover part 32 is a part that corresponds to the bottomed cylindrical part of the second socket part 30.

[0092] When the socket device 3 is viewed from the mounting direction of the light source 2 (the Z-axis direction in this embodiment), the first cover part 31 is located outside the second cover part 32, and the second cover part 32 is located inside the first cover part 31. In this embodiment, the annular first cover part 31 surrounds the second cover part 32. In other words, the first cover part 31 is located on the outer periphery side of the second cover part 32.

[0093] The first cover part 31 and the second cover part 32 are located at different heights in the mounting direction (the Z-axis direction in this embodiment) of the light source 2. In this embodiment, the first cover part 31 is located closer to the light source 2 than the second cover part 32.

[0094] The first cover part 31 is provided with through holes 31a through which the locking members 7, which are screws, are inserted. In the present embodiment, four through holes 31a are provided in the first cover part 31. When viewed from above, each of the four through holes 31a in the first cover part 31 is provided at the same position as each of the four through holes 11b in the socket main body 11 of the first socket part 10.

[0095] As described above, the socket device 3 and the instrument body 4 are fixed by the locking member 7. Specifically, the first socket portion 10 and the second socket portion 30 of the second socket portion 30 in the socket device 3 are engaged with and fixed to the instrument body 4 by the locking member 7. In this embodiment, the locking member 7 is a screw, and therefore the first socket portion 10 and the second socket portion 30 are fixed to the instrument body 4 by screw fastening.

[0096] As shown in FIG. 6 , by fixing the first socket 10 and the second socket 30 to the appliance body 4 with the locking member 7, the first cover 31 of the second socket 30 is pressed against the appliance body 4. At this time, the outer surface (upper surface) of the first cover 31 of the second socket 30 abuts against the inner surface (lower surface) of the bottom of the appliance body 4. Therefore, the outer surface of the first cover 31 is the surface that abuts against the bottom of the appliance body 4. In this embodiment, the outer surface of the first cover 31 and the inner surface of the bottom of the appliance body 4 are flat. This allows the first cover 31 and the bottom of the appliance body 4 to be in contact with each other without any gaps, thereby ensuring airtightness between the appliance body 4 and the second socket 30.

[0097] 6, in this embodiment, through-hole 11b of socket body 11 of first socket 10 is provided in protrusion 11c provided on socket body 11. Protrusion 11c protrudes toward first cover 31 and is inserted into through-hole 31a of first cover 31. Specifically, a step formed on the outer surface of protrusion 11c engages with a step formed on the inner surface of through-hole 31a of first cover 31. In other words, a portion of protrusion 11c of socket body 11 is fitted into through-hole 31a of first cover 31.

[0098] In this case, if the distance between the outer surface (top surface) of the first cover part 31 and the step surface of the step portion on the outer surface of the protrusion 11c of the socket body 11 (the step surface of the step portion on the inner surface of the through hole 31a of the first cover part 31) is d1, and the distance between the outer surface of the protrusion 11c of the socket body 11 and the step surface of the step portion on the outer surface of the protrusion 11c of the socket body 11 (the step surface of the step portion on the inner surface of the through hole 31a of the first cover part 31) is d2, it is preferable that d1 > d2. This prevents the upper surface of the protrusion 11c of the socket body 11 inserted into the through hole 31a of the first cover part 31 from protruding from the upper surface of the first cover part 31. Therefore, the first cover part 31 can be tightly attached to the bottom of the appliance body 4, thereby ensuring tight attachment between the appliance body 4 and the second socket part 30.

[0099] 4, as described above, the second cover part 32 protrudes from the opening 4a provided in the device body 4. Specifically, the entire second cover part 32 protrudes to the outside from the opening 4a of the device body 4.

[0100] 7, insertion holes 32a through which the power line 6 is inserted are provided on the side surface of the second cover part 32. Specifically, a pair of insertion holes 32a corresponding to a pair of conductive wires constituting the power line 6 are provided on the side surface of the second cover part 32.

[0101] In addition, in this embodiment, since two power lines 6 are inserted into the socket device 3, pairs of insertion holes 32a are provided in two locations on the side surface of the second cover part 32. In other words, four insertion holes 32a are provided in the second cover part 32. In this embodiment, the pair of insertion holes 32a are provided at positions facing each other with the second cover part 32 in between. Therefore, the two power lines 6 inserted into the socket device 3 are arranged in a straight line.

[0102] Furthermore, a power line release hole 32b is provided on the side surface of the second cover portion 32, into which a release jig is inserted that is used when removing the power line 6 from the socket device 3. By inserting the release jig into the power line release hole 32b, the release jig can be pressed against the power line release member 24. The power line release hole 32b is provided near the insertion hole 32a through which the power line 6 is inserted.

[0103] In this embodiment, two power lines 6 are inserted into the socket device 3, and therefore the power line disconnecting holes 32b are provided in two locations on the side surface of the second cover part 32. Specifically, the power line disconnecting holes 32b are provided in opposing positions, similar to the two power lines 6.

[0104] As described above, according to the socket device 3 of this embodiment, the first socket portion 10 to which the light source 2 is attached is integrally formed with the socket main body portion 11 on which the power supply pin connection terminals 21 of the terminal board 20 are arranged and the terminal block portion 12 on which the power line connection terminals 22 of the terminal board 20 are arranged. Specifically, the socket main body portion 11 and the terminal block portion 12 are integrally formed from a resin material.

[0105] In this way, the socket device 3 of this embodiment not only has the socket function to which the light source 2 is attached and the function of a terminal block to which the power line 6 is connected, but also has a socket main body 11 having the socket function and a terminal block portion 12 that functions as a terminal block, which are integrally configured.

[0106] This configuration eliminates the need for lead wires connecting the socket 3X and the terminal block 5X as in the conventional lighting fixture 1X shown in Figures 25 and 26. This eliminates the cost of lead wires and the work required to connect the socket 3X and the terminal block 5X with lead wires. This reduces the cost of the lighting fixture 1 and improves the ease of installation of the lighting fixture 1.

[0107] Furthermore, by providing the socket device 3 with the function of a terminal block, it is no longer necessary to install the terminal block at a location distant from the fixture body 4. As a result, by using the socket device 3 of this embodiment, the size of the lighting fixture 1 on the projection surface (XY plane) when viewed vertically can be reduced, and the width size (radial size) of the lighting fixture 1 can be easily reduced. For example, the lighting fixture 1 can be reduced in size while maintaining the specifications of the ceiling recess depth and shading angle.

[0108] Moreover, in the socket device 3 of this embodiment, the socket body 11 and the terminal block 12 of the first socket portion 10 are located at different heights relative to the mounting direction of the light source 2. With this configuration, even when a lamp with a base such as GX53 type is used as the light source 2, the protrusion 2g (circuit portion) of the base 2e of the light source 2 can be housed in the space formed by the different height structure of the socket body 11 and the terminal block 12. This makes it possible to prevent the height of the lighting fixture 1 from becoming too high, even if the socket device 3 has a function as a terminal block.

[0109] In this way, the socket device 3 and lighting fixture 1 of this embodiment can improve costs and ease of installation, and can reduce the size of the lighting fixture 1 on the projection surface while preventing the height of the lighting fixture 1 from increasing.

[0110] In the socket device 3 according to this embodiment, the terminal block portion 12 is located on the opposite side of the socket body portion 11 from the light source 2 side.

[0111] With this configuration, first socket portion 10 has recess 10a formed in it, where terminal block portion 12 is recessed on the side opposite to light source 2, so that protrusion 2g of light source 2 can be housed in recess 10a of first socket portion 10. Therefore, the height of lighting fixture 1 can be effectively prevented from increasing.

[0112] In this embodiment, when the socket device 3 is viewed from the mounting direction of the light source 2, the socket body 11 is located outside the terminal block 12. Specifically, the socket body 11 is annular and surrounds the terminal block 12.

[0113] With this configuration, the inner portion of the first socket portion 10 becomes the terminal block portion 12, and therefore the recess 10a of the first socket portion 10 can be formed in the inner portion of the first socket portion 10. As a result, the protrusion 2g formed in the inner portion of the light source 2 can be efficiently housed in the recess 10a formed in the inner portion of the first socket portion 10. In other words, the protrusion 2g of the light source 2 can be housed without increasing the radial size of the socket device 3. Therefore, it is possible to reduce the radial size of the socket device 3, and the width size (radial size) of the lighting fixture 1 can be further reduced.

[0114] Furthermore, in the socket device 3 of this embodiment, the socket main body 11 is provided with two pin receiving holes 11a into which the two power supply pins 2d are engaged, and as shown in Figure 15, when the socket device 3 is viewed from the mounting direction of the light source 2, the direction in which the power line 6 is inserted into the power line insertion port 25 is perpendicular to the line L1 connecting the two power supply pin connection terminals 21 together.

[0115] With this configuration, even if the socket device 3 has the function of a terminal block to which the power line 6 is connected, the distance between the power feed pin 2d of the light source 2 and the power line 6 can be made as long as possible, making it easy to ensure an insulation distance between the power feed pin 2d of the light source 2 and the power line 6. Furthermore, by configuring the insertion direction of the power line 6 into the power line insertion port 25 to be perpendicular to the line L1 connecting the two power feed pin connection terminals 21, the assembly of the lighting fixture 1 equipped with the socket device 3 can be made easier.

[0116] Furthermore, in the socket device 3 of this embodiment, power line connection terminals 22 are arranged in two locations on the terminal block portion 12 of the first socket portion 10 so that two power lines 6 can be connected to the socket device 3. The line L2 connecting the power line connection terminals 22 arranged in the two locations is perpendicular to the line L1 connecting the two power feed pin connection terminals 21.

[0117] With this configuration, even when the socket device 3 has a structure in which two power lines 6 are connected as in this embodiment, it is possible to maximize the distance between the power feed pin 2d of the light source 2 and each of the two power lines 6. This makes it possible to easily ensure the insulation distance between the power feed pin 2d of the light source 2 and each of the two power lines 6.

[0118] In this embodiment, the power line 6 connected to at least one of a pair of power line connection terminals 22 arranged in two locations is a transmission wiring for transmitting power from the socket device 3 to another socket device 3.

[0119] The socket device 3 in this embodiment also includes a second socket portion 30 that covers the first socket portion 10 in which the terminal board 20 is arranged. The second socket portion 30 has a first cover portion 31 that covers the socket body portion 11 of the first socket portion 10, and a second cover portion 32 that covers the terminal block portion 12 of the first socket portion 10.

[0120] With this configuration, not only can the second socket portion 30 protect the power supply pin connection terminal 21 of the terminal board 20 arranged in the socket main body portion 11 having the socket function, but the second socket portion 30 can also protect the power line connection terminal 22 of the terminal board 20 arranged in the terminal block portion 12 which functions as a terminal block.

[0121] In addition, in the socket device 3 of this embodiment, the first cover part 31 and the second cover part 32 in the second socket part 30 are located at different heights relative to the mounting direction of the light source 2, and the first cover part 31 is located closer to the light source 2 than the second cover part 32.

[0122] With this configuration, the first cover part 31 covering the socket main body 11 of the first socket part 10 is located one step lower than the second cover part 32 covering the terminal block part 12 of the first socket part 10. As a result, even if the shape of the first socket part 10 is such that the socket main body 11 is located closer to the light source 2 than the terminal block part 12, as in this embodiment, spaces for arranging the terminal board 20 can be easily secured between the first cover part 31 and the socket main body 11 and between the second cover part 32 and the terminal block part 12.

[0123] In the socket device 3 of this embodiment, an insertion hole 32a through which the power line 6 is inserted is provided on the side surface of the second cover portion 32 of the second socket portion 30.

[0124] With this configuration, when connecting the power line 6 to the socket device 3, the power line 6 can be inserted into the insertion hole 32a of the second cover part 32 of the second socket part 30, and the power line 6 can be connected to the power line connection terminal 22.

[0125] Furthermore, lighting fixture 1 in this embodiment includes socket device 3 and fixture body 4 to which socket device 3 is attached. Second socket portion 30 of socket device 3 and fixture body 4 are engaged with locking member 7, and second cover portion 32 of second socket portion 30 protrudes from opening 4a provided in fixture body 4.

[0126] With this configuration, the second cover portion 32 that covers the power line connection terminal 22 to which the power line 6 is connected is exposed from the fixture body 4. This makes it possible to easily connect the power line 6 to the socket device 3 even when the socket device 3 is covered by the fixture body 4. Therefore, it is possible to realize a lighting fixture 1 that is easy to install.

[0127] Furthermore, when the second socket portion 30 of the socket device 3 and the appliance body 4 are engaged by the locking member 7 in this manner, it is preferable that the outer surface of the first cover portion 31 of the second socket portion 30 is a surface that abuts against the bottom of the appliance body 4. It is also preferable that the outer surface of the first cover portion 31 of the second socket portion 30 is flat.

[0128] This configuration can improve the adhesion between the device body 4 and the first cover part 31. In this case, it is preferable that the first cover part 31 is pressed against the device body 4. This can further improve the adhesion between the device body 4 and the first cover part 31. Therefore, it is possible to ensure the airtightness between the device body 4 and the second socket part 30.

[0129] Furthermore, lighting fixture 1 in this embodiment is provided with rubber cover 9 attached to the side surface of second cover portion 32 of second socket portion 30, and rubber cover 9 has power line insertion portion 9a through which power line 6 is inserted. This power line insertion portion 9a faces insertion hole 32a provided in the side surface of second cover portion 32.

[0130] With this configuration, even when connecting the power line 6 to the socket device 3 via the rubber cover 9, the power line 6 can be easily connected to the socket device 3. Therefore, the ease of installation when connecting the power line 6 to the lighting fixture 1 can be improved.

[0131] Furthermore, lighting fixture 1 in this embodiment includes metal top plate 5 that covers at least a portion of second cover portion 32 protruding from opening 4a of fixture body 4. An opening 5c ​​is provided on the side surface of the portion of top plate 5 that covers second cover portion 32.

[0132] By covering the second cover portion 32 with the top plate 5 in this manner, it is possible to ensure the quasi-fire resistance of the socket device 3. Moreover, by providing the opening 5c ​​on the side surface of the portion of the top plate 5 that covers the second cover portion 32, even if the second cover portion 32 protruding from the opening 4a of the fixture body 4 is covered with the top plate 5, the power line 6 can be inserted from the opening 5c ​​in the top plate 5 and through the insertion hole 32a in the second cover portion 32, and the power line 6 can be easily connected to the power line connection terminal 22. In other words, it is possible to realize a lighting fixture 1 that is easy to install while ensuring quasi-fire resistance.

[0133] In addition, in the lighting fixture 1 according to the present embodiment, the mounting spring 8 is fixed to the top plate 5. In this way, by fixing the mounting spring 8 to the top plate 5 that covers the socket device 3 and integrating the top plate 5 and the mounting spring 8 into a single component, it is possible to improve the semi-fire resistance of the socket device 3 while reducing the cost of the lighting fixture 1. In particular, since the top plate 5 covers the second cover part 32 (protruding part) that covers the terminal block part 12 in the socket device 3, it is possible to effectively improve the semi-fire resistance of the socket device 3.

[0134] Moreover, the top plate 5 in this embodiment functions as a mounting member to which the socket device 3 is attached with screws. In this way, the top plate 5 in this embodiment has the function of covering the terminal block portion 12 of the socket device 3, the function of fixing the mounting spring 8, and the function of mounting the socket device 3, so that the single top plate 5 serves three purposes. As a result, the top plate 5 and the mounting spring 8 are made into a single component, which improves assembly efficiency, and the fixture body 4 can be made into a simple shape, eliminating the need for complex processing, thereby reducing costs.

[0135] (Embodiment 2) Next, a lighting fixture 1A according to embodiment 2 will be described with reference to Figs. 16 to 21. Fig. 16 is a perspective view of lighting fixture 1A according to embodiment 2. Fig. 17 is an exploded perspective view of lighting fixture 1A. Fig. 18 is a cross-sectional view of lighting fixture 1A. Note that Fig. 18 shows only the portion that appears in the cross section. Fig. 19 is a perspective view of socket device 3A and rubber cover 9A according to embodiment 2. Fig. 20 is an exploded perspective view of socket device 3A according to embodiment 2. Fig. 21 is a perspective view of socket device 3A as viewed from the floor side.

[0136] 16 to 21, lighting fixture 1A according to the present embodiment includes, similarly to embodiment 1, a light source 2, a socket device 3A, a fixture body 4A, a top plate 5A, a locking member 7, a mounting spring 8, and a rubber cover 9A. A power line 6 is connected to lighting fixture 1A. Specifically, power line 6 is connected to socket device 3A, which functions as both a socket and a terminal block.

[0137] Furthermore, lighting fixture 1A in this embodiment is configured so that two power lines 6 can be connected to socket device 3A, similarly to embodiment 1. Therefore, also in this embodiment, rubber covers 9A (rubber packings) are provided at two locations on second cover portion 32 of socket device 3A, one for each of the two power lines 6.

[0138] The lighting fixture 1A according to the present embodiment differs from the lighting fixture 1 according to the first embodiment in the configurations of the fixture body 4A, the top plate 5A, and the rubber cover 9A. In particular, the lighting fixture 1A according to the present embodiment is characterized by the structure of the rubber cover 9A. Note that, to match the structure of this rubber cover 9A, the shapes of the fixture body 4A and the top plate 5A have also been partially changed compared to the first embodiment.

[0139] Similar to the rubber cover 9 in the first embodiment, the rubber cover 9A in the present embodiment is attached to the side surface of the second cover portion 32 of the second socket portion 30A in the socket device 3A, but has a different shape from the rubber cover 9 in the first embodiment. The specific shape of the rubber cover 9A in the present embodiment will be described below using Figs. 22 and 23 with reference to Figs. 16 to 21. Figs. 22 and 23 are perspective views of the rubber cover 9A used in the lighting fixture 1A in the second embodiment. Note that Fig. 23 is a perspective view of the rubber cover 9A as viewed from the back side.

[0140] 22 and 23, the rubber cover 9A according to this embodiment has a cover main body 93, a first fixing sheet 94, and a second fixing sheet 95. The cover main body 93, the first fixing sheet 94, and the second fixing sheet 95 are integrally formed from an insulating resin material. The resin material constituting the rubber cover 9A can be the same as that of the rubber cover 9 in the first embodiment. Therefore, the rubber cover 9A has rubber elasticity.

[0141] 17 and 18, the cover main body 93 is a covering part that covers the side surface of the second cover part 32 of the socket device 3A. The cover main body 93 is in surface contact with a flat portion of the outer periphery of the second cover part 32 that is cut out in a flat shape.

[0142] As shown in FIGS. 17 and 18 , the first fixing sheet portion 94 is a sheet-like flat portion extending outward from the lower end of the cover main body portion 93 in a direction parallel to the XY plane. As shown in FIG. 18 , the first fixing sheet portion 94 is placed on the bottom of the instrument body 4A. The first fixing sheet portion 94 placed on the bottom of the instrument body 4A is pressed down by a pressing piece 5e provided on the top plate 5A. In other words, the first fixing sheet portion 94 is sandwiched between the bottom of the instrument body 4A and the pressing piece 5e of the top plate 5A. As described above, the top plate 5A of this embodiment differs from the top plate 5 of the first embodiment in that it has a pressing piece 5e that presses the first fixing sheet portion 94 against the instrument body 4A. Two pressing pieces 5e are provided to press down both side ends of the first fixing sheet portion 94.

[0143] The second fixing sheet portion 95 is a sheet-like flat portion extending inward from the upper end of the cover main body portion 93 in a direction parallel to the XY plane. The second fixing sheet portion 95 is placed on the upper part of the second cover portion 32 of the second socket portion 30A in the socket device 3A. The second fixing sheet portion 95 placed on the upper part of the second cover portion 32 is pressed down by the first top plate portion 5a of the top plate 5A. In other words, the second fixing sheet portion 95 is sandwiched between the second cover portion 32 of the second socket portion 30A and the top plate 5. Specifically, the second fixing sheet portion 95 is sandwiched between the upper part of the second cover portion 32 and the first top plate portion 5a of the top plate 5A.

[0144] As described above, in this embodiment, a portion of the rubber cover 9A is extended to provide the rubber cover 9A with the first fixing sheet portion 94 and the second fixing sheet portion 95. This allows the first fixing sheet portion 94 and the second fixing sheet portion 95 to be firmly clamped between the top plate 5A, the appliance body 4A, and the socket device 3A by the axial force of the locking member 7 (in this embodiment, the tightening force of the screw) for fixing the top plate 5A to the appliance body 4A. This allows the rubber cover 9A to be attached in tight contact with the socket device 3A.

[0145] 22 and 23, in this embodiment, a first protrusion 94a (boss) is provided on the back surface of the first fixing sheet portion 94, and a second protrusion 95a (boss) is provided on the back surface of the second fixing sheet portion 95. When attaching the rubber cover 9A to the socket device 3A, the first protrusion 94a of the first fixing sheet portion 94 is fitted into a first recess 4c (see FIG. 17) provided in the bottom of the appliance main body 4A, and the second protrusion 95a of the second fixing sheet portion 95 is fitted into a second recess 32c (see FIG. 19) provided in the second cover portion 32 of the second socket portion 30A of the socket device 3A.

[0146] As described above, the instrument body 4A in this embodiment differs from the instrument body 4 in the first embodiment in that it has a first recess 4c. Furthermore, the socket device 3A in this embodiment differs from the socket device 3 in the first embodiment in that it has a second recess 32c. Although the first recess 4c of the instrument body 4A is a through-hole, it may also be a hole having a bottom. Furthermore, although the second recess 32c of the socket device 3A is a hole having a bottom, it may also be a through-hole.

[0147] As in the present embodiment, by fitting the first convex portion 94a and the second convex portion 95a of the rubber cover 9A into the first recess 4c and the second recess 32c, it is possible to prevent the rubber cover 9A from shifting out of position. In particular, when inserting or removing the power line 6 and the release jig into or from the rubber cover 9A, the rubber cover 9A may be pulled, causing the rubber cover 9A to shift out of position. However, by fitting the first convex portion 94a and the second convex portion 95a into the first recess 4c and the second recess 32c, it is possible to prevent the rubber cover 9A from shifting out of position even if the rubber cover 9A is pulled.

[0148] Moreover, in this embodiment, the first protrusion 94a and the second protrusion 95a are provided so as to protrude in a direction (e.g., the Z-axis direction) perpendicular to the direction in which the rubber cover 9A is pulled (e.g., a direction parallel to the XY plane), thereby effectively preventing the rubber cover 9A from shifting position even when the rubber cover 9A is pulled.

[0149] There are two first protrusions 94a and two second protrusions 95a, which not only prevent the rubber cover 9A from rotating and becoming misaligned when the rubber cover 9A is pulled, but also prevent the rubber cover 9A from moving horizontally and becoming misaligned.

[0150] 22 and 23, the rubber cover 9A in this embodiment, like the rubber cover 9 in the first embodiment, has a power line insertion portion 9a through which the power line 6 is inserted, and a power line release portion 9b into which a release jig is inserted when removing the power line 6 from the socket device 3A. In this embodiment, the power line insertion portion 9a and the power line release portion 9b are each part of the cover main body 93.

[0151] In this embodiment as well, the power line insertion portion 9a of the rubber cover 9A faces the insertion hole 32a provided on the side surface of the second cover portion 32 of the socket device 3A. When connecting the power line 6 to the socket device 3A, the power line insertion portion 9a becomes an insertion hole (power line insertion hole) through which the power line 6 passes by breaking through the cover main body portion 93 with the power line 6. This makes it possible to easily connect the power line 6 to the socket device 3A when connecting the power line 6 to the socket device 3A via the rubber cover 9A.

[0152] The power line releasing portion 9b of the rubber cover 9A faces the power line releasing hole 32b provided on the side surface of the second cover portion 32 of the socket device 3A. When removing the power line 6 from the socket device 3A, the power line releasing portion 9b becomes an insertion hole (release jig insertion hole) through which the release jig passes by piercing the cover main body portion 93 with a release jig inserted into the power line releasing hole 32b of the socket device 3A.

[0153] As described above, in the present embodiment, as in the first embodiment, a power line insertion hole through which the power line 6 is inserted and a release jig insertion hole through which the release jig is inserted are formed in the rubber cover 9A by breaking through a part of the rubber cover 9A. Note that the rubber cover 9A may be configured so that the power line 6 or the release jig can be inserted without breaking through a part of the rubber cover 9A. In other words, the power line insertion portion 9a and the power line release portion 9b may be insertion holes that are formed in the rubber cover 9A from the beginning.

[0154] As shown in FIG. 22, the rubber cover 9A has a first guide tube 93a that guides the power line 6 when the power line 6 is inserted into the socket device 3A. The first guide tube 93a is a tube portion that guides the power line 6 toward the power line insertion portion 9a. One opening of the tube portion of the first guide tube 93a is a wire insertion port into which the power line 6 is inserted. The other opening of the tube portion of the first guide tube 93a is closed. The power line insertion portion 9a of the rubber cover 9A is the closed portion (bottom) of the tube portion of the first guide tube 93a. In other words, the power line insertion portion 9a is a part of the first guide tube 93a. In this embodiment, the first guide tube 93a has a cylindrical shape with a circular opening, but this is not limited to this.

[0155] The first guide tubes 93a are provided on the cover main body 93. Two first guide tubes 93a are provided corresponding to the pair of conductive wires of the power line 6. In other words, a pair of power line insertion portions 9a are provided on the cover main body 93. Like the power line insertion portions 9a, the first guide tubes 93a face the insertion holes 32a provided on the side surface of the second cover portion 32 of the socket device 3A.

[0156] By providing the rubber cover 9A with the first guide tube 93a connected to the power line insertion portion 9a in this way, the power line 6 insertion port (opening of the first guide tube 93a) in the lighting fixture 1A can be extended to a position where it is easily visible from outside the lighting fixture 1A, and the power line 6 inserted into the first guide tube 93a can be guided toward the power line insertion portion 9a by the tube portion of the first guide tube 93a. This allows the user to easily insert the power line 6 into the power line insertion portion 9a of the rubber cover 9A. Therefore, even if the socket device 3A has the function of a terminal block, the power line 6 can be easily connected to the socket device 3A.

[0157] The rubber cover 9A also has a second guide tube 93b, which is a tube that guides a release jig, such as a flathead screwdriver, toward the power line release portion 9b when the release jig is used to remove the power line 6 from the socket device 3A. One opening on the tube of the second guide tube 93b is a release jig insertion port into which the release jig is inserted. The other opening on the tube of the second guide tube 93b is closed. The power line release portion 9b of the rubber cover 9A is the closed portion (bottom) of the tube of the second guide tube 93b. In other words, the power line release portion 9b is a part of the second guide tube 93b. In this embodiment, the opening shape of the second guide tube 93b is a rectangular tube that is horizontally elongated, but this is not limited to this.

[0158] The second guide tube 93b is provided on the cover main body 93. One second guide tube 93b is provided in the region between the pair of first guide tubes 93a. Like the power line releasing portion 9b, the second guide tube 93b faces the power line releasing hole 32b provided on the side surface of the second cover portion 32 of the socket device 3A.

[0159] By providing the rubber cover 9A with the second guide tube 93b connected to the power line releasing portion 9b in this way, the insertion port for the release jig in the lighting fixture 1A (the opening of the second guide tube 93b) becomes easily visible from the exterior of the lighting fixture 1A, and the tube portion of the second guide tube 93b can guide the release jig inserted into the second guide tube 93b toward the power line releasing portion 9b. This allows the user to easily insert the release jig into the power line releasing portion 9b of the rubber cover 9A. Therefore, the release jig can be easily inserted into the socket device 3A and pressed against the power line releasing member 24, making it easy to remove the power line 6 from the socket device 3A.

[0160] The rubber cover 9A further has a wall portion 93c formed to surround the first guide tube 93a. The wall portion 93c is provided on the cover main body 93 in the form of a rib so as to protrude outward. The wall portion 93c protrudes beyond the open end of the first guide tube 93a. This allows the wall portion 93c to protect the first guide tube 93a. In particular, the wall portion 93c covers the upper and outer portions of the first guide tube 93a. This allows the wall portion 93c to function as an edge protection wall that protects the edge portion of the rubber cover 9A, so the wall portion 93c can effectively protect the first guide tube 93a.

[0161] On the other hand, the wall portion 93c does not surround the second guide tube 93b. In other words, the portion of the wall portion 93c above the second guide tube 93b is a notch formed by cutting out the wall portion 93c. This improves the visibility of the second guide tube 93b from the upper side (the side opposite the light-emitting side) of the rubber cover 9A. Therefore, when removing the power line 6 from the socket device 3A, the user can easily find the second guide tube 93b into which the release jig is inserted.

[0162] Furthermore, the socket device 3A of this embodiment and the socket device 3 of the first embodiment are also partially different in configuration of the first socket portion 10A, the terminal board 20A, and the second socket portion 30A.

[0163] Specifically, in the first socket 10A of the present embodiment, as shown in Fig. 20, a power line holding portion 12a having an insertion hole through which the power line 6 is inserted is formed in the terminal block portion 12 of the first socket 10A. The opening of the power line holding portion 12a is a power line insertion port 25 into which the power line 6 is inserted. That is, in the first embodiment, the power line insertion port 25 was the space between the plate portion 22a of the power line connection terminal 22 and the power line releasing member 24, but in the present embodiment, the power line insertion port 25 is part of the terminal block portion 12 of the first socket 10A.

[0164] Two power line holding portions 12a are provided corresponding to a pair of conductive wires of the power line 6. In this embodiment, two power lines 6 can also be connected to the socket device 3A, so four power line holding portions 12a are provided on the terminal block portion 12.

[0165] A pair of conductive wires of the power line 6 connected to the socket device 3A through an insertion hole 32a formed on the side of the socket device 3A are connected to the power line connection terminals 22A of the terminal board 20A arranged in the terminal block portion 12 via a pair of power line holding portions 12a.

[0166] Furthermore, with respect to the second socket portion 30A in this embodiment, in comparison with the second socket portion 30 in the first embodiment, in addition to the second recess 32c being formed in the upper part of the second cover portion 32 as described above, a portion of the through hole 31a provided in the first cover portion 31 is cut out.

[0167] In addition, the first socket portion 10A and the second socket portion 30A are partially different in shape from the first socket portion 10 and the second socket portion 30 in the first embodiment.

[0168] Furthermore, terminal board 20A in the present embodiment has a different shape of power line connection terminal 22A than terminal board 20 in above-described embodiment 1. Furthermore, in above-described embodiment 1, the multiple metal plates constituting terminal board 20 are connected by a sandwiching structure, but in the present embodiment, the multiple metal plates constituting terminal board 20 are connected by a crimping structure.

[0169] Other than these, the socket device 3A in this embodiment basically has the same configuration as the socket device 3 in the above embodiment.

[0170] Therefore, the socket device 3A of the present embodiment and the lighting fixture 1A including the socket device 3A have the same effects as the socket device 3 and the lighting fixture 1 of the first embodiment.

[0171] For example, in the socket device 3A of this embodiment, similar to the socket device 3 in the above-mentioned embodiment 1, the first socket portion 10A to which the light source 2 is attached is integrally constructed with a socket main body portion 11 on which the power supply pin connection terminal 21 of the terminal board 20A is arranged and a terminal base portion 12 on which the power line connection terminal 22A of the terminal board 20A is arranged, and the socket main body portion 11 and the terminal base portion 12 in the first socket portion 10A are located at different heights relative to the attachment direction of the light source 2.

[0172] With this configuration, the socket device 3A and lighting fixture 1A in this embodiment can also improve costs and ease of installation, and can reduce the size of the lighting fixture 1A on the projection surface while preventing the height of the lighting fixture 1A from increasing.

[0173] Also in the socket device 3A according to this embodiment, the terminal block portion 12 is located on the opposite side of the socket body portion 11 from the light source 2 side.

[0174] 21, this configuration also forms recess 10a in first socket portion 10A, where terminal block portion 12 is recessed on the side opposite to light source 2. This allows protrusion 2g of light source 2 to be housed in recess 10a of first socket portion 10A. This effectively prevents the height of lighting fixture 1A from increasing.

[0175] Furthermore, lighting fixture 1A in this embodiment uses rubber cover 9A having first guide tube 93a and second guide tube 93b, which makes it easier to insert and remove power cord 6 than lighting fixture 1 in the first embodiment, further improving workability. This point will be described below.

[0176] In the lighting fixture 1 of the first embodiment, the rubber cover 9 has a cylindrical portion 91, which may make it difficult to find the outlet for the power line 6 when connecting the power line 6 to the lighting fixture 1, or the outlet for the release jig when using the release jig to remove the power line 6 from the lighting fixture 1. In other words, in the lighting fixture 1 of the first embodiment, the power line insertion portion 9a and the power line release portion 9b of the rubber cover 9 are located in a recessed position in the rubber cover 9 (specifically, the bottom 92), which may make it difficult to insert or remove the power line 6.

[0177] In contrast, in the lighting fixture 1A of the present embodiment, a first guide tube 93a and a second guide tube 93b are provided on the rubber cover 9A. As a result, when connecting the power line 6 to the lighting fixture 1A, the power line 6 can be inserted into the rubber cover 9A and connected to the socket device 3A while checking the position of the first guide tube 93a, which has an insertion port for inserting the power line 6. Furthermore, when removing the power line 6 from the lighting fixture 1A using a release jig, the release jig can be inserted into the rubber cover 9A while checking the position of the second guide tube 93b, which has an insertion port for inserting the release jig, and the power line release member 24 of the socket device 3A can be moved. Therefore, according to the lighting fixture 1A of the present embodiment, the power line 6 can be inserted and removed more easily than in the lighting fixture 1 of the first embodiment, further improving installation workability.

[0178] In the present embodiment, the rubber covers 9A are provided at two locations on the second cover portion 32 of the socket device 3 corresponding to the two power lines 6, but this is not limiting. For example, the two rubber covers 9A shown in Figures 18 and 19 may be integrated into one.

[0179] Specifically, as shown in Fig. 24, a rubber cover 9B may be used that includes two cover main bodies 93, each having a first guide tube 93a and a second guide tube 93b, two first fixing sheet portions 94 corresponding to the two cover main bodies 93, and one second fixing sheet portion 95B. The rubber cover 9B shown in Fig. 24 is configured such that two rubber covers 9A (Figs. 18 and 19) are provided in two locations, and the second fixing sheet portion 95 of one rubber cover 9A is connected to the second fixing sheet portion 95 of the other rubber cover 9A. In the rubber cover 9B configured in this manner, the second fixing sheet portion 95B is formed to cover the entire second cover portion 32 of the second socket portion 30A of the socket device 3A.

[0180] In this way, by using the rubber cover 9B that integrates the two rubber covers 9A, one second fixing sheet portion 95B can be firmly sandwiched between the top plate 5 and the second cover portion 30 of the socket device 3A. This prevents the rubber cover 9B from shifting or coming off even if it is pulled when inserting or removing the power line 6. Furthermore, by using one rubber cover 9B, the ease of assembly of the lighting fixture 1 can be improved compared to when two rubber covers 9A are used.

[0181] (Variation) Although the present invention has been described above based on the first and second embodiments, the present invention is not limited to the first and second embodiments.

[0182] For example, in the first embodiment, the second cover portion 32 of the socket device 3 is separate from the top plate 5 and the fixture body 4, but this is not limited to this. For example, the second cover portion 32 of the socket device 3 may be integrated with the top plate 5 or the fixture body 4. This allows the function of the second cover portion 32 to be imparted to the top plate 5 or the fixture body 4, eliminating the need to provide the second cover portion 32 separately. This further reduces the cost of the lighting fixture 1. The same applies to the second embodiment. In other words, in the second embodiment, the second cover portion 32 of the socket device 3A may be integrated with the top plate 5A or the fixture body 4A.

[0183] Furthermore, in the first and second embodiments, the light source 2 is an LED lamp made up of an LED, but this is not limiting. For example, the light source 2 may be a fluorescent lamp.

[0184] In the first and second embodiments, the light source 2 is a flat lamp with a GX53 base, but this is not limiting. For example, the light source 2 may be a lamp with a GH76p or GH69h base, or may be a lamp other than a flat lamp. Any light source 2 having two power supply pins can be used.

[0185] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art would think of, and forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the present invention. [Explanation of symbols]

[0186] 1. 1A lighting fixture 2 light source 2d Power pin 3. 3A socket device 4, 4A fixture body 4a Opening hole 4b Through hole 5, 5A Top plate 5c aperture 6 Power line 7 Locking member 9a Power line insertion part 9b Power line release part 10, 10A 1st socket 11 Socket body 11a Pin receiving hole 12 Terminal block section 20, 20A terminal block 21 Power supply pin connection terminal 22, 22A power line connection terminal 25 Power line insertion port 30, 30A second socket 31 First cover part 32 Second cover part 93a First guide tube 93b Second guide tube 93c wall 94 First fixing sheet part 95, 95B Second fixing seat part

Claims

1. A socket device including a first socket portion to which a light source having two power supply pins is attached, The first socket portion is a socket body in which a power feed pin connection terminal is disposed to which the power feed pin is electrically and mechanically connected; a terminal block portion on which a power line connection terminal is disposed, the power line connection terminal being electrically connected to the power feed pin connection terminal and to which a power line for supplying power to the light source is connected; a connection portion located between the socket body portion and the terminal block portion, the socket body and the terminal block are integrally formed and are located at different heights relative to the mounting direction of the light source, the first socket portion is formed in a stepped shape by the socket body portion, the terminal block portion, and the connection portion; Socket device.

2. The terminal block is located on the opposite side of the socket body from the light source. The socket device according to claim 1 .

3. When the socket device is viewed from the mounting direction of the light source, the socket body is located outside the terminal block.

3. The socket device according to claim 1 or 2.

4. The socket body is annular. The socket device according to claim 3 .

5. the terminal block portion is provided with a power line insertion port into which the power line is inserted, the socket body is provided with two pin receiving holes into which the two power supply pins are engaged, the power supply pin connection terminals are located near the two pin receiving holes, When the socket device is viewed from the mounting direction of the light source, the insertion direction of the power line into the power line insertion port is perpendicular to a line connecting the two power feed pin connection terminals. The socket device according to any one of claims 1 to 4.

6. the power supply line connection terminals are arranged at two locations on the terminal block portion so that two of the power supply lines can be connected to the socket device; a line connecting the two power supply line connection terminals is perpendicular to a line connecting the two power supply pin connection terminals; The socket device according to any one of claims 1 to 5.

7. The power line connected to at least one of the two power line connection terminals is a transmission wiring for transmitting power from the socket device to another socket device.

7. The socket device according to claim 6.

8. Further, a second socket portion covering the first socket portion is provided, The second socket portion has a first cover portion that covers the socket body portion and a second cover portion that covers the terminal block portion. The socket device according to any one of claims 1 to 7.

9. The first cover portion and the second cover portion are positioned at different heights with respect to the mounting direction of the light source, The first cover portion is located closer to the light source than the second cover portion.

9. The socket device according to claim 8.

10. A socket device having a first socket portion to which a light source having two power supply pins is attached, The first socket portion is a socket body in which a power feed pin connection terminal is disposed to which the power feed pin is electrically and mechanically connected; a terminal block portion on which a power line connection terminal is disposed, the power line connection terminal being electrically connected to the power supply pin connection terminal and to which a power line for supplying power to the light source is connected; the socket body and the terminal block are integrally formed and are located at different heights relative to the mounting direction of the light source, Further, a second socket portion covering the first socket portion is provided, the second socket portion has a first cover portion that covers the socket body portion and a second cover portion that covers the terminal block portion, The outer surface of the first cover portion is flat. Socket device.

11. The outer surface of the first cover portion is a surface that abuts against a bottom of a fixture body of a lighting fixture equipped with the socket device. The socket device according to claim 10.

12. A socket device comprising a first socket portion to which a light source having two power supply pins is attached, The first socket portion is a socket body in which a power feed pin connection terminal is disposed to which the power feed pin is electrically and mechanically connected; a terminal block portion on which a power line connection terminal is disposed, the power line connection terminal being electrically connected to the power supply pin connection terminal and to which a power line for supplying power to the light source is connected; the socket body and the terminal block are integrally formed and are located at different heights relative to the mounting direction of the light source, Further, a second socket portion covering the first socket portion is provided, the second socket portion has a first cover portion that covers the socket body portion and a second cover portion that covers the terminal block portion, An insertion hole through which the power line is inserted is provided on a side surface of the second cover portion. Socket device.

13. The socket body and the terminal block are integrally formed from a resin material. The socket device according to any one of claims 1 to 12.

14. A socket device; an appliance body to which the socket device is attached, the socket device includes a first socket portion to which a light source having two power supply pins is attached, and a second socket portion that covers the first socket portion; The first socket portion is a socket body in which a power feed pin connection terminal is disposed to which the power feed pin is electrically and mechanically connected; a terminal block portion on which a power line connection terminal is disposed, the power line connection terminal being electrically connected to the power supply pin connection terminal and to which a power line for supplying power to the light source is connected; the socket body and the terminal block are integrally formed and are located at different heights relative to the mounting direction of the light source, the second socket portion has a first cover portion that covers the socket body portion and a second cover portion that covers the terminal block portion, the second socket portion of the socket device and the instrument body are engaged with each other by a locking member, The second cover portion of the second socket portion protrudes from an opening hole provided in the appliance body. Lighting fixtures.

15. The first cover portion is pressed against the appliance body.

15. A lighting fixture according to claim 14.

16. a rubber cover attached to a side surface of the second cover portion; the rubber cover has a power line insertion portion through which the power line is inserted, The power line insertion portion of the rubber cover faces an insertion hole provided in a side surface of the second cover portion.

16. A lighting device according to claim 14 or 15.

17. the rubber cover has a first guide tube formed of a tube portion that guides the power line toward the power line insertion portion; 17. A lighting fixture according to claim 16.

18. the rubber cover has a wall portion formed to surround the first guide tube, The wall portion protrudes beyond the open end of the first guide tube.

18. A lighting fixture according to claim 17.

19. the socket device has a power line disconnecting member for disconnecting the power line from the power line connection terminal, The rubber cover has a power line releasing portion into which a release jig is inserted that is pressed against the power line releasing member when the power line is removed from the socket device, and a second guide tube that is a tube portion that guides the release jig toward the power line releasing portion.

19. A lighting fixture according to claim 18.

20. The wall portion does not surround the second guide tube.

20. A lighting fixture according to claim 19.

21. a metal top plate that covers at least a portion of the second cover portion that protrudes from the opening hole; 、 the rubber cover has a first fixing sheet portion, The top plate has a pressing piece that presses the first fixing sheet portion against the instrument body. A lighting fixture according to any one of claims 16 to 20.

22. an opening is provided on a side surface of a portion of the top plate that covers the second cover portion, The opening communicates with an insertion hole provided in a side surface of the second cover portion.

22. A lighting fixture according to claim 21.

23. the rubber cover has a second fixing sheet portion sandwiched between the second cover portion and the top plate; 23. A lighting device according to claim 21 or 22.

24. the socket device is configured to allow two of the power lines to be connected; the rubber covers are provided at two locations on the second cover portion corresponding to the two power supply lines, In the rubber covers provided at two locations, the second fixing sheet portion of the rubber cover at one location is connected to the second fixing sheet portion of the rubber cover at the other location.

24. A lighting fixture according to claim 23.

25. The second cover portion is integrated with a metal top plate that covers the socket device. A lighting fixture according to any one of claims 14 to 20.

26. A mounting spring is fixed to the top plate. A lighting fixture according to any one of claims 21 to 25.

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