Luminaire

Abstract

To provide a luminaire that is usable in engagement with a duct rail, and made thinner than before.SOLUTION: A luminaire is fitted to a duct rail, and comprises a light source unit and an instrument body to which the light source unit is attached, the instrument body comprises a housing part and a plug part 32 attached to the housing part, and the plug part 32 comprises a power reception part 320 which engages the duct rail to be supplied with external electric power, and a base part 325 which comprises a lever part 328 for rotating the power reception part 320, and to which the power reception part 320 is attached rotatably. The part, positioned in the plug part 32, of wiring 3266 electrically connecting with the power reception part 320 and electrically connecting with the light source unit is all located above a top surface 311 of the housing part.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a lighting fixture to be attached to a duct rail. [Background technology]

[0002] In recent years, emphasis has been placed on the design of lighting fixtures that are attached to duct rails. Patent Document 1 discloses a lighting fixture that reduces the thickness of the lighting fixture by arranging the plug part, which is a component for attaching it to a duct rail, and the power supply part so that they do not overlap in the vertical direction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2021-174778 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned lighting fixture, the plug part has a connecting part that engages with the duct rail to receive power, and a conductive part that is connected to this and transmits power to the power supply part, and the conductive part is stored within the storage part, which is the main body of the lighting fixture, so there is a problem that the thickness of the conductive part increases the thickness of the lighting fixture.

[0005] The present invention has been made in view of the above problems, and has an object to provide a lighting fixture that can be used by engaging with a duct rail and is thinner than conventional lighting fixtures. [Means for solving the problem]

[0006] In order to solve the above problems, the lighting fixture of the present invention is a lighting fixture that is attached to a duct rail and comprises a light source unit and a fixture body to which the light source unit is attached, the fixture body comprises a housing portion and a plug portion attached to the housing portion, the plug portion comprises a power receiving portion that engages with the duct rail to receive external power supply, a lever portion that rotates the power receiving portion, and a base portion to which the power receiving portion is rotatably attached, and in the wiring for electrically connecting to the power receiving portion and electrically connecting to the light source unit, the portion located within the plug portion is all located above the top surface of the housing portion. [Effects of the Invention]

[0007] With the above-described configuration, the lighting fixture according to the present invention can be used by engaging with a duct rail, and since no wiring needs to be passed through the housing, a lighting fixture that is thinner than conventional lighting fixtures can be provided. [Brief explanation of the drawings]

[0008] [Figure 1] 1A is a bottom perspective view of a lighting fixture and a duct rail according to one embodiment of the present invention, and FIG. 1B is a bottom perspective view showing the lighting fixture attached to the duct rail. [Figure 2] 2(a) is a top view showing the fixture body of the lighting fixture, (b) is a cross-sectional schematic view showing the AA cross section of FIG. 2(a), and (c) is an upper perspective view showing the housing of the fixture body. [Figure 3] 2(a) is a side view showing a light source unit in the lighting fixture, and FIG. 2(b) is a schematic cross-sectional view of the lighting fixture attached to a duct rail, including the BB cross-section of FIG. 2(b). [Figure 4] (a) An upper perspective view of the plug part of the lighting fixture when it is fixed to the duct rail, (b) an upper perspective view of the plug part when it is released from the duct rail, and (c) a schematic side cross-sectional view for explaining the positional relationship of the internal electrodes arranged in the plug part. [Figure 5]1A is an exploded view showing the configuration of a base portion provided in the plug portion, FIG. 1B is a side view of an internal electrode provided in the plug portion, and FIG. 1B is a top view of the same. [Figure 6] FIG. 2 is a top perspective view illustrating the configuration of a power receiving section provided in the plug section. [Figure 7] (a) A schematic diagram showing the state in which the power receiving unit and the base unit are separated, (b) A schematic diagram showing the state in which the power receiving unit and the base unit are in a conducting state in the fixed state, (c) A schematic diagram for explaining the movement of the electrode unit 322 and the electrode unit 323 of the plug unit, and (d) A schematic diagram showing the state in which the power receiving unit and the base unit are de-energized in the open state. [Figure 8] (a) A diagram showing a schematic diagram of the arrangement of the wiring part connected to the plug part in the lighting fixture, (b) a side view showing the cover part that covers the electric wire part, (c) a front view of the same, and (d) a perspective view showing the appearance of the wiring part. DETAILED DESCRIPTION OF THE INVENTION

[0009] <1. First embodiment> <1.1. Overview> A lighting fixture 1 according to one embodiment of the present invention will now be described with reference to the drawings.

[0010] FIG. 1(a) is a bottom perspective view of a lighting fixture 1 and a duct rail 9 according to one embodiment of the present invention, and FIG. 1(b) is a bottom perspective view showing the lighting fixture 1 attached to the duct rail 9.

[0011] Here, the duct rail 9 is assumed to be attached to the ceiling as an example of an installation location. In the following explanation, the direction toward the floor when viewed from the ceiling is referred to as "down" and the direction toward the ceiling when viewed from the floor is referred to as "up." Also, in each drawing, the proportions of the lighting fixture are appropriately changed for convenience of expression, such as making the short side longer and the long side shorter so as not to crush the lines.

[0012] As shown in Figures 1(a) and 1(b), the lighting fixture 1 is a lighting fixture that is attached to a duct rail 9 for use. The lighting fixture 1 has, as an example, an elongated, approximately rectangular parallelepiped shape with a short side length of about 32 mm and a long side length of about 600 mm.

[0013] The lighting fixture 1 comprises a fixture body 3 and a light source unit 5, which are configured to be separable from the fixture body 3. The fixture body 3 comprises a housing 31, and plug portions 32 and 33 that engage with the duct rail 9. In particular, the wiring portion that connects to the plug portion 32 is configured to pass through the top surface of the housing 31, thereby realizing a slim lighting fixture 1.

[0014] <1.2.Configuration> First, the duct rail 9 to which the lighting fixture 1 is attached will be described, and then the light source unit 5 and fixture body 3 that constitute the lighting fixture 1 will be described in detail with reference to the drawings.

[0015] <1.2.1. Duct rail 9> The duct rail 9 is installed on a ceiling surface or the like, and is configured as an elongated molding having a substantially rectangular cross-sectional shape as shown in Figures 1(a) and 3(b). The duct rail 9 includes a main body 91, power supply units 94 and 95, and support units 96 and 97.

[0016] The main body 91 has a generally rectangular cross section with an opening at the center of the lower side. Hereinafter, as shown in Figure 1(a), this opening will be referred to as an opening 99, and the portions located on either side of the rectangular cylindrical lower opening 99 will be referred to as locking portions 92 and 93.

[0017] The locking portions 92 and 93 are portions at which the plug portions 32 and 33 are locked, as shown in FIG. 3(b).

[0018] The power supplying portion 94 and the power supplying portion 95 are electrodes for supplying power to the lighting fixture 1, and transmit power supplied from outside the duct rail 9 to the lighting fixture 1 through the plug portion 32.

[0019] Supporting portion 96 and supporting portion 97 have the function of supporting power feeding portion 94 and power feeding portion 95, respectively.

[0020] <1.2.2. Light Source Unit 5> Fig. 3(a) is a side view showing the light source unit 5. Fig. 3(b) is a schematic cross-sectional view of the lighting fixture 1 attached to the duct rail, including the BB cross-section of Fig. 2(b).

[0021] As shown in Figures 3(a) and 3(b), the light source unit 5 includes a support body 51, a cover portion 52, a light source board 53 on which a light source 54 is arranged, an attachment spring 55, an attachment spring 56, a wiring portion 57, a feed wiring 59, and a power supply portion 61.

[0022] The support body 51 is a long, plate-like member made of metal, and functions as a heat sink that dissipates heat generated by the light source 54. The support body 51 has a light source substrate 53 disposed on the lower surface side thereof, and mounting springs 55, 56, wiring section 57, feed wiring 59, and power supply section 61 disposed on the upper surface side thereof.

[0023] As shown in FIG. 3(b), the light source 54 is, for example, a plurality of LEDs (Light Emitting Diodes) arranged on the light source substrate 53.

[0024] The light source board 53 is an elongated circuit board on which a plurality of light sources 54 are arranged along the longitudinal direction, and is disposed on the lower surface side of the support body 51.

[0025] The cover portion 52 has the function of diffusing light emitted by the light source 54. The cover portion 52 is made of a light-transmitting resin material such as polycarbonate or acrylic to which a light diffusing material has been added. The cover portion 52 is disposed on the underside of the support body 51 so as to cover the light source 54. The cover portion 52 has an elongated U-shaped cross section, and is fixed to the support body 51 so as to be slidable relative to the support body 51 by engaging an engaging portion on the upper end side of the cover portion 52 with the support body 51.

[0026] The mounting springs 55 and 56 are members for mounting the light source unit 5 to the fixture body 3. The mounting springs 55 and 56 have elastic force and are spring members that engage with the spring receivers 37 and 38, respectively.

[0027] The wiring section 57 is a wire for transmitting power supplied from the duct rail 9 via the fixture body 3 to the power supply section 61. As shown in FIG. 3(a), the wiring section 57 has a connector section 58 at its tip.

[0028] The feeder wiring 59 is a feeder wiring for supplying power to other lighting fixtures when the lighting fixture 1 is used in conjunction with other lighting fixtures of the same type.

[0029] The power supply unit 61 has the function of converting power supplied from outside the lighting fixture 1 into a voltage and current suitable for the light source 54 and supplying it to the light source 54. The power supply unit 61 has a socket into which a wireless module (not shown) is inserted. The wireless module is an independent, small device that is attached to the power supply unit 61 and has wireless communication functions and a power control function that controls the operation of the power supply unit 61. The wireless module receives a lighting control signal that indicates lighting control commands issued by a user using a tablet terminal or the like. The power supply unit 61 performs dimming control, color adjustment control, and the like by supplying power to the light source 54 in accordance with the lighting control signal received from the wireless module via the socket.

[0030] <1.2.3. Instrument body 3> The fixture body 3 constitutes part of the exterior of the lighting fixture 1 and is the main body of the lighting fixture that houses at least a part of the light source unit 5.

[0031] 2(a) is a top view showing the device body 3, FIG. 2(b) is a cross-sectional schematic view showing the AA cross section of FIG. 2(a), and FIG. 2(c) is an upper perspective view showing the housing 31 of the device body 3.

[0032] As shown in Figures 1(a) to (b) and 2(a) to (c), the device body 3 includes a housing 31, a plug portion 32, a plug portion 33, a wiring cover portion 34, a cable portion 35, a spring receiver 37, and a spring receiver 38.

[0033] <1.2.3.1. Housing 31, spring retainer 37, and spring retainer 38> The housing 31 forms the outer shell of the device main body 3, and has a long, narrow, U-shaped cross section with an open bottom, and is made up of an upper plate 311 and side plate 312 and side plate 313. The housing 31 is formed by extruding a metal such as aluminum or by extruding a resin, and has holes drilled on its top surface.

[0034] As shown in Figures 1(a) and 1(b), end covers 41 are attached to both longitudinal ends of the housing 31. This gives the fixture body 3 the appearance of a long, narrow box that is open at the bottom, and at least a part of the light source unit 5 is housed in the internal space. Hereinafter, this internal space will be referred to as the "housing section 39."

[0035] As shown in FIG. 2(c), an upper plate portion 311 on the upper surface of the housing 31 is provided with an opening 314, an opening 315, an opening 316, and a hole portion 317 consisting of a plurality of holes.

[0036] The opening 314 is an opening for inserting the cable portion 35 from the upper plate portion 311 into the housing portion 39. The openings 315 and 315 are portions to which the plug portion 32 and the plug portion 33 are attached, respectively. The hole portion 317 is provided to engage with claw portions 3421, 3423, etc. (see FIGS. 8(b) and 8(c)) provided on the wiring cover portion 34, thereby detachably fixing the wiring cover portion 34 to the housing 31.

[0037] As shown in Figure 2(b), spring receivers 37 and 38 are arranged within storage section 39, and are components that engage mounting springs 55 and 56, respectively, when engaging light source unit 5 with fixture body 3.

[0038] <1.2.3.2. Plug section 32> The plug portion 32 is a portion that engages with the duct rail 9 and receives power from the duct rail 9. As shown in FIGS. 2(a) to 2(c), the plug portion 32 is fitted into an opening 315 of the housing 31 and fixed with screws or the like.

[0039] Hereinafter, the state in which plug portion 32 and plug portion 33, and thus lighting fixture 1, are fixed to duct rail 9 and duct rail 9 and lighting fixture 1 are electrically connected will be referred to as the "fixed state," and the state in which lighting fixture 1 and duct rail 9 are released from their fixed state and duct rail 9 and lighting fixture 1 are not electrically connected will be referred to as the "open state."

[0040] FIG. 4(a) is a top perspective view showing the plug portion 32 in a fixed state, FIG. 4(b) is a top perspective view showing the plug portion 32 in an open state, and FIG. 4(c) is a side cross-sectional schematic view for explaining the positional relationship of the internal electrodes arranged in the plug portion.

[0041] As shown in FIGS. 4(a) and 4(b), the plug portion 32 includes a power receiving portion 320 and a base portion 325.

[0042] <1.2.3.2.1. Base 325> Base section 325 is a base on which power receiving section 320 is attached so as to be rotatable at a predetermined angle (for example, 90 degrees).

[0043] FIG. 5( a ) is an exploded view showing the configuration of the base part 325 .

[0044] As shown in FIG. 5(a), the base part 325 is configured by fixing an upper base part 326 on a lower base part 327 with a lever part 328 sandwiched therebetween.

[0045] Lever portion 328 is a member for a user to grip and rotate about a rotation axis (rotation axis X in FIGS. 4(a) and 4(b)), thereby rotating power receiving portion 320. Lever portion 328 is formed of resin, for example. As shown in FIG. 5(a), lever portion 328 is substantially flat, and includes a base end portion 3281, an arm portion 3282, a grip portion 3283, a cylindrical shaft portion 3284, and a locking protrusion 3285.

[0046] The base end portion 3281 is a substantially circular plate-shaped portion, and has a cylindrical shaft portion 3284 provided near the center. The cylindrical shaft portion 3284 is a portion into which the shaft leg portion 3213 (see FIG. 6) of the power receiving unit 320 is inserted, and by being inserted, the lever portion 328 and the power receiving unit 320 are fixed together. The center of the cylindrical shaft portion 3284 coincides with the rotation axis X.

[0047] Arm portion 3282 is a flat plate-shaped portion, and its thickness is sufficient to maintain strength to prevent breaking or bending when a user rotates lever portion 328. As an example, the thickness of arm portion 3282 in the vertical direction is 2 mm. Arm portion 3282 continues from base end portion 3281 and has grip portion 3283 at its tip.

[0048] The grip portion 3283 is a portion that the user grips and operates with their fingers to operate the lever portion 328. The grip portion 3283 is formed so that its vertical thickness is greater than that of the arm portion 3282. The thickness of the grip portion 3283 is sufficient as long as it allows the user to grip and rotate it, and is 6 mm as an example. However, it may be thinner or thicker than 6 mm, or may be about the same thickness as the arm portion 3282. When the thickness of the grip portion 3283 is about the same as that of the arm portion 3282, a sleek impression is given in terms of design. A thinner grip portion 3283 is desirable because it is less noticeable in terms of design, but this is a trade-off with ease of operation by the user.

[0049] The locking protrusion 3285 is a portion that engages with the base lower part 327, more specifically, the locking protrusion 3274, to prevent the lever part 328 from rotating uncontrollably. As shown in FIG. 5(a), the locking protrusion 3285 is provided at the tip of the arm part 3282, on the inner side (closer to the storage part 329) than the grip part 3283.

[0050] 5(a), lower base portion 327 is the bottom portion of base portion 325, and lever portion 328 is rotatably attached thereon. Lower base portion 327 includes bottom plate portion 3271, raised portion 3272, cylindrical shaft portion 3273, and locking protrusion 3274.

[0051] The bottom plate portion 3271 is a plate-shaped portion. The raised portion 3272 is a raised portion on the upper surface of the bottom plate portion 3271 that matches the shape of the lever portion 328.

[0052] The cylindrical shaft portion 3273 is a portion into which the hole of the tubular shaft portion 3284 of the lever portion 328 is fitted. This allows the lever portion 328 to rotate by a predetermined angle relative to the bottom plate portion 3271. The central axis of the cylindrical shaft portion 3273 coincides with the rotation axis X.

[0053] The locking protrusion 3274 is configured to engage with the locking protrusion 3285 so as to prevent the lever part 328 from rotating spontaneously in the fixed state shown in FIG. 4(a).

[0054] When the user rotates lever portion 328 in the direction of arrow MR from the state shown in Figure 4(b) to the state shown in Figure 4(a), locking protrusion 3285 first moves until it comes into contact with locking protrusion 3274, then moves beyond this point and enters the inside of base lower portion 327 further than locking protrusion 3274, thereby engaging with locking protrusion 3274, and locks lever portion 328 so that it does not rotate naturally.

[0055] The upper base portion 326 corresponds to the upper cover of the base portion 325, and as shown in Figures 4(a) to (c) and 5(a), it includes a bottom plate portion 3261, a positioning portion 3262, an electrode exposure portion 3263, an internal electrode 3266, an internal electrode 3267, and an opening 3268.

[0056] The positioning portion 3262 is a U-shaped section that is open downward and is provided on the bottom plate portion 3261. The width of the positioning portion 3262 in the short side direction (width W2 in FIG. 5(a)) is slightly narrower than the width W1 in the short side direction of the opening 99 of the duct rail 9 shown in FIG. 3(b) (hereinafter referred to as "opening width").

[0057] When the lighting fixture 1 is attached to the duct rail 9, the positioning portion 3262 fits into the opening 99 of the duct rail 9, thereby fixing the plug portion 32 and the lighting fixture 1 in position relative to the duct rail 9 in the width direction.

[0058] The electrode exposed portion 3263 is continuous with the positioning portion 3262, has the same width W2 as the positioning portion 3262, and is taller than the positioning portion 3262, and has an exposure opening through which the internal electrodes 3266 and 3267 are exposed.

[0059] As shown in FIGS. 4(a) to 4(c), an internal electrode 3266 and an internal electrode 3267 are disposed inside the positioning portion 3262 and the electrode exposed portion 3263.

[0060] FIG. 5(b) is a side view of the internal electrode 3266, and FIG. 5(c) is a top view of the internal electrode 3266.

[0061] 5(b) and 5(c), the internal electrode 3266 is a plate-shaped electrode plate and includes a long, plate-shaped plate portion 3266a, a plate portion 3266b that is continuous with the plate portion 3266a and bent at a predetermined angle, and a hook-shaped plate portion 3266c that is continuous with the plate portion 3266b. The internal electrode 3267 has a configuration similar to that of the internal electrode 3266, but the portion corresponding to the plate portion 3266b bends in the opposite direction to that of the internal electrode 3266.

[0062] Hereinafter, base upper part 326 and base lower part 327 are collectively referred to as storage part 329. Storage part 329 has a portion that stores arm part 3282 of lever part 328 in the fixed state.

[0063] <1.2.3.2.2. Power receiving unit 320> FIG. 6 is a top perspective view showing the configuration of power receiving unit 320. As shown in FIG.

[0064] The power receiving portion 320 is a member that engages with the duct rail 9 and receives power supply from the duct rail 9. The power receiving portion 320 includes a shaft portion 321, an electrode portion 322, an electrode portion 323, and a locking portion 324, as shown in FIG.

[0065] The shaft portion 321 is a generally columnar member that serves as the rotation center of the power receiving portion 320, and includes a shaft head portion 3211, a shaft body portion 3212, and a shaft leg portion 3213, as shown in FIG. 6. The shaft head portion 3211 is a portion that has a hole on the upper surface side into which a nut 3292 (see FIG. 7(c)) fits. The shaft body portion 3212 is a rectangular cylindrical portion that is continuous with the shaft head portion 3211, and fits with the locking portion 324.

[0066] The shaft leg portion 3213 is a cylindrical portion that is continuous with the shaft body portion 3212, and is fitted and fixed to the cylindrical shaft portion 3284 of the lever portion 328. As a result, as shown in Figures 4(a) and 4(b), when the lever portion 328 is rotated by the user, the power receiving portion 320 also rotates by the same amount.

[0067] As shown in FIG. 6, the electrode section 322 is a flat electrode member bent at approximately 90 degrees, and includes a contact section 3221, a body section 3222, and legs 3223.

[0068] The contact portions 3221 and 3231 are electrodes that come into contact with one of the power supply portions 94 and 95 of the duct rail 9 and receive power when the lighting fixture 1 is locked to the duct rail 9. The body portions 3222 and 3232 are portions that fit into the hole portions 3247 provided in the locking portion 324. The leg portions 3223 and 3233 are portions that can come into contact with one of the internal electrodes 3266 and 3267 provided in the base portion 325, respectively.

[0069] FIG. 7(a) is a diagram schematically illustrating a state in which the power receiving unit 320 and the base unit 325 are separated.

[0070] 3(b), the locking portion 324 is placed on the locking portions 92 and 93 of the duct rail 9 in the fixed state, and is a portion that contributes to the engagement between the lighting fixture 1 and the duct rail 9. The locking portion 324 has a hole 3247 in the center.

[0071] As shown in FIGS. 6 and 7(a), the locking portion 324 includes an upper body portion 3241, a support plate portion 3242, and a lower body portion 3243.

[0072] The upper body portion 3241 and the lower body portion 3243 are cylindrical portions whose outer diameter is approximately the same as the outer diameter of the shaft head portion 3211 of the shaft portion 321 .

[0073] The support plate portion 3242 is a flat portion having a hole in the center that forms the hole portion 3247, and its width in the short direction is slightly narrower than the opening width W1 of the duct rail 9. Hereinafter, the portion on one end side of the support plate portion 3242 in the longitudinal direction will be referred to as the "support portion 3246," and the portion on the other end side will be referred to as the "support portion 3245."

[0074] When the support plate portion 3242 is fixed, the support portion 3245 is placed on the locking portion 93 of the duct rail 9, and the support portion 3246 is placed on the locking portion 92, as shown in Figure 3(b).

[0075] <1.2.3.2.3. Fixing the power receiving unit 320 and the base unit 325> 7(c), the above-described power receiving unit 320 and base unit 325 are fixed together by inserting bolt 3291 from below the central portion of base unit 325 and fitting bolt 3291 into nut 3292 that fits onto shaft head 3211 of shaft unit 321. This fixes lever unit 328 and power receiving unit 320, and power receiving unit 320 is rotatably fixed to base unit 325 (more specifically, upper base part 326 and lower base part 327) so that power receiving unit 320 also rotates when lever unit 328 is rotated.

[0076] <1.2.3.3. Plug portion 33, cable portion 35, and wiring cover portion 34> The plug portion 33 is a member that engages with the duct rail 9 to fix the lighting fixture 1 to the duct rail 9. Unlike the plug portion 32, the plug portion 33 does not receive power from the duct rail 9. As shown in FIGS. 2(a) to 2(c), the plug portion 33 is fitted into the opening 316 of the housing 31 and fixed with screws or the like.

[0077] The configuration of plug portion 33 is roughly the same as plug portion 32, but does not include members corresponding to electrode portion 322, electrode portion 323, internal electrode 3266, and internal electrode 3267, which are necessary for receiving a supply of power.

[0078] Furthermore, the electrode exposed portion 3263 in the plug portion 32 has an exposed opening that exposes the internal electrodes 3266 and 3267 to the outside, but the plug portion 33 does not have an exposed opening at the portion corresponding to the electrode exposed portion 3263 and has a flat wall portion.

[0079] FIG. 8(d) is a perspective view showing the external configuration of the cable portion 35.

[0080] The cable portion 35 is a wire for electrically connecting the plug portion 32 and the light source unit 5.

[0081] 8(d), the cable portion 35 includes a connector portion 351, an electric wire portion 352, a connector portion 353, and a connector portion 354. The connector portion 353 and the connector portion 354 are electrically connected to the internal electrodes 3266 and 3267, respectively, which are exposed from the electrode exposure portion 3263 of the base portion 325. Hereinafter, the internal electrodes 3266, 3267, and the cable portion 35 will be collectively referred to as the "wiring portion."

[0082] The connector portion 351 is electrically connected to a connector portion 58 provided in the wiring portion 57 of the light source unit 5, thereby enabling the light source unit 5 to receive power supply from the duct rail 9 via the plug portion 32. The connector portion 353 and the connector portion 354 are connectors for electrically connecting to the internal electrode 3266 and the internal electrode 3267, respectively.

[0083] The wiring cover portion 34 is a cover that covers the cable portion 35, and has the function of physically protecting the cable portion 35 and also protecting it from contact with the power supply portions 94 and 95 of the duct rail 9. The wiring cover portion 34 has the same width W2 as the positioning portion 3262 and the electrode exposed portion 3263, and like the positioning portion 3262 and the electrode exposed portion 3263, by fitting into the opening 99 of the duct rail 9, has the function of preventing movement of the plug portion 32 and the lighting fixture 1 so that their positions in the width direction do not shift.

[0084] FIG. 8(b) is a side view showing the wire cover part 34, and FIG. 8(c) is a front view showing the wire cover part 34.

[0085] As shown in Fig. 8(c), the wiring cover 34 is a long, narrow member that has a U-shaped cross section and is open downward. As shown in Fig. 8(b), the side wall 342 of the wiring cover 34 has claws 3421 and 3423 that are processed to be sandwiched between the notches and have elasticity. The side wall 343 has two claws similar to those of the side wall 342. The tips of the four claws (tips 3422, 3424, 3432, etc.) fit into and engage with the four holes of the hole 317 of the housing 31, respectively, whereby the wiring cover 34 is detachably fixed to the housing 31.

[0086] <1.3. Operation> <1.3.1. Rotational Movement of Plug Portion 32> The rotational movement of the plug portion 32 will now be described.

[0087] The plug portion 32 can be placed in two states, a fixed state and an open state, and in a transition state between the two states, by the user rotating the lever portion 328.

[0088] As shown in Figure 4(b), the plug portion 32 is in an open state when the arm portion 3282 and the grip portion 3283 of the lever portion 328 extend from the base portion 325 and are not stored, and the arm portion 3282 is extended along the short side direction of the lighting fixture 1.

[0089] In the open state, as shown in FIG. 4(b), when the user grips grip portion 3283 and rotates lever portion 328 in the direction of arrow MR, power receiving portion 320 also rotates in the direction of arrow RR.

[0090] Then, as shown in FIG. 4(a), the arm portion 3282 is aligned along the longitudinal direction of the lighting fixture 1, the arm portion 3282 of the lever portion 328 is stored in the base portion 325, only the grip portion 3283 protrudes from the base portion 325, and the arm portion 3282 is extended along the short side direction of the lighting fixture 1, thereby achieving a fixed state.

[0091] 4(a), when the user grips grip portion 3283 and rotates lever portion 328 in the direction of arrow MF, power receiving portion 320 also rotates in the direction of arrow RF. Continuing to rotate lever portion 328 then brings the device into the open state.

[0092] The locked state and the released state will be described in more detail below.

[0093] <1.3.1.1. Fixed State> FIG. 7(b) is a schematic diagram showing a state in which electricity is conducted between the power receiving unit and the base unit in the fixed state.

[0094] In the fixed state, the plug portion 32, and therefore the lighting fixture 1, is fixed to the duct rail 9, and the lighting fixture 1 is able to receive power from the duct rail 9.

[0095] In the fixed state, as shown in Figures 2(a) and 4(a), the contact portion 3221 of the electrode portion 322 and the contact portion 3231 of the electrode portion 323 of the plug portion 32 are aligned along the short side of the lighting fixture 1, and the short side of the lighting fixture 1 and the longitudinal direction of the locking portion 324 are aligned.

[0096] In addition, in the fixed state, when the lighting fixture 1 is fixed to the duct rail 9, as shown in Figure 3(b), the support portion 3246 of the locking portion 324 is placed on the locking portion 92 of the duct rail 9, and the support portion 3246 of the locking portion 324 is placed on the locking portion 93 of the duct rail 9.

[0097] In the fixed state, the contact portion 3221 of the electrode portion 322 contacts the power supply portion 94 of the duct rail 9, and the contact portion 3231 of the electrode portion 323 contacts the power supply portion 95 of the duct rail 9, thereby electrically connecting the duct rail 9 and the lighting fixture 1, and enabling power to be supplied from the duct rail 9 to the lighting fixture 1.

[0098] In addition, in the fixed state, as shown in FIG. 7(b), the leg portion 3223 contacts the internal electrode 3266 of the base portion 325, and the leg portion 3233 contacts the internal electrode 3267 of the base portion 325, resulting in an electrical connection.

[0099] As a result, power supplied from the power supply portions 94 and 95 of the duct rail 9 is transmitted to the power supply portion 61 via the electrode portion 322 , the electrode portion 323 , the internal electrode 3266 , the internal electrode 3267 , the cable portion 35 , and the wiring portion 57 .

[0100] <1.3.1.2. Open state> FIG. 7(d) is a schematic diagram showing a state in which the power receiving unit and the base unit are de-energized in the open state.

[0101] In the open state, the plug portion 32, and therefore the lighting fixture 1 and the duct rail 9 are released from their fixed positions, and the lighting fixture 1 cannot receive power from the duct rail 9.

[0102] In the open state, as shown in Figure 4(b), the plug portion 32 is rotated 90 degrees from the fixed state, and the contact portion 3221 of the electrode portion 322 and the contact portion 3231 of the electrode portion 323 are aligned along the longitudinal direction of the lighting fixture 1, and the longitudinal direction of the lighting fixture 1 and the longitudinal direction of the locking portion 324 are aligned.

[0103] In addition, in the open state, the support portion 3246 of the locking portion 324 is not placed on the locking portion 92 of the duct rail 9, and the support portion 3246 of the locking portion 324 is not placed on the locking portion 93 of the duct rail 9, making it possible to remove the plug portion 32, and therefore the lighting fixture 1, from the duct rail 9.

[0104] In addition, in the open state, as shown in Figure 7(d), the leg 3223 does not contact the internal electrode 3266 of the base 325, and the leg 3233 does not contact the internal electrode 3267 of the base 325, so that the duct rail 9 and the lighting fixture 1 are electrically disconnected.

[0105] <1.3.2. Movement of the electrode portion 322 and the electrode portion 323 of the plug portion 32> FIG. 7(c) is a schematic diagram for explaining the movement of the electrode portion 322 and the electrode portion 323. As shown in FIG.

[0106] 6, electrode portion 322 is inserted into hole 3247 of locking portion 324 and is sandwiched between the inner wall of hole 3247 of locking portion 324 and shaft body portion 3212 of shaft portion 321. Here, electrode portion 322 is not fixed so as to not move, but is loosely fitted so as to be movable.

[0107] More specifically, as shown in Fig. 7(c), the inclined surface 3215 of the shaft body 3212 is not a straight surface in the vertical direction in a cross-sectional view, but is inclined relative to the vertical direction. The electrode portion 322 can be in a state where the body 3222 and the leg portions 3223 shown as the electrode portion 322 in Fig. 7(c) are aligned along the vertical direction, or a state where the body 3222 and the leg portions 3223 shown as the electrode portion 322s are inclined from the vertical direction along the inclined surface 3215.

[0108] Here, if the electrode portion 322 is not loosely fitted but is fixed without moving, when attempting to change from the open state shown in FIG. 4(b) to the fixed state shown in FIG. 4(a), the contact portion 3221 of the electrode portion 322 will be pressed against the power supply portion 94, the leg portion 3223 will be pressed against the internal electrode 3266, and the body portion 3222 will be pressed against the shaft body portion 3212. However, if this is too stiff, the user may not be able to fully rotate the lever portion 328, and a strong force may be required to achieve the fixed state, which may result in damage to the lever portion 328, etc.

[0109] However, because electrode portion 322 is loosely fitted to allow movement, as shown in Fig. 7(c), when the user attempts to fix it, it tilts, deforms, slides, etc. to an appropriate degree, releasing and absorbing some of the pressure from contact portion 3221 and internal electrode 3266, and settles into a position where contact portion 3221 can be maintained in contact with power supply portion 94 and leg portion 3223 can be maintained in contact with internal electrode 3266, allowing it to be fixed without the user having to apply a strong force. Electrode portion 323 moves in the same way as electrode portion 322.

[0110] <1.4. Features of Lighting Fixture 1> The features of the lighting fixture 1 configured as above will be described.

[0111] FIG. 8(a) is a diagram showing a cross section of the cable portion 35 in the lighting fixture 1. FIG.

[0112] As shown in Figures 8(a) and 2(c), the cable portion 35 passes above the upper surface of the upper plate portion 311 of the housing 31, inside the wiring cover portion 34, and through the opening 314 of the housing 31, and the connector portion 351 is located within the storage portion 39 of the device main body 3.

[0113] 4(c), in the lighting fixture 1, of the wiring connecting the plug portion 32 to the power supply portion 61, the internal electrodes 3266 and 3267 are located above the upper plate portion 311 of the housing 31. As shown in FIG.

[0114] In other words, most of the wiring for connecting the plug portion 32 to the power supply portion 61, particularly the cable portion 35, the internal electrode 3266 and the internal electrode 3267 which are wiring provided in the device body 3, are not located within the accommodating portion 39, except for the connector portion 351 and a portion in its vicinity, and therefore the volume occupied by the wiring etc. in the accommodating portion 39 can be reduced accordingly.

[0115] Therefore, the fixture body 3, and therefore the lighting fixture 1, can be made thinner and more compact.

[0116] Furthermore, in the lighting fixture 1, the plug portion 32 is attached to the housing 31 with screws as shown in FIG. 2(a), but since no wiring is arranged inside the housing 31, there is no need to arrange electrodes for connecting the wiring at a position inside the housing 31 of the plug portion 32.

[0117] Therefore, as shown in Figure 2(b), within the storage section 39, the plug section 32 has a vertical thickness that is the sum of the thickness of the bottom plate section 3261 of the upper base section 326 and the thickness of the lower base section 327, which is extremely thin compared to the conventional case in which electrodes and wires are arranged within the storage section, and is configured to occupy a smaller volume, so that the storage section 39 can be made smaller than conventional cases, which contributes to making the lighting device 1 thinner and more compact.

[0118] In addition, with respect to the lever portion 328, the arm portion 3282, which is the portion that is stored in the storage portion 329 (upper base portion 326 and lower base portion 327) of the base portion 325 in the fixed state, has a vertical thickness that is very thin compared to the grip portion 3283 that the user holds with their fingers, as shown in FIG. 5(a), and only the grip portion 3283, which requires a vertical thickness, is configured to protrude outside the storage portion 329 of the base portion 325.

[0119] From the above, the fixture body 3, and therefore the lighting fixture 1, can be made thinner and more compact.

[0120] Furthermore, in the lighting fixture 1, the lever portion 328 is arranged below the storage portion 329 of the base portion 325, i.e., the upper surface of the upper plate portion 311 of the housing 31, so the upper surface of the upper plate portion 311 of the fixture body 3 can be brought very close to the lower surface of the duct rail 9 without being hindered by the presence of the lever portion 328. When the lighting fixture 1 is attached by engaging with the duct rail 9 and fixed, the configuration is such that the gap between the lighting fixture 1 and the duct rail 9 can be almost eliminated.

[0121] <2. Modifications> Although the embodiments of the lighting fixture according to the present invention have been described above, the description of the above embodiments should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined not by the above-described embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications that are equivalent to the meaning and scope of the claims. The lighting fixtures exemplified can also be modified as follows, and it goes without saying that the present invention is not limited to the lighting fixtures shown in the above-described embodiments.

[0122] (1) In the above-described embodiment, two plug parts, plug part 32 and plug part 33, are provided as the plug part, but this is not limiting, and three or more plug parts may be provided. In this case, at least one of the multiple plug parts, like plug part 32, is electrically connected to the duct rail 9 and has the function of receiving power from the duct rail 9.

[0123] (2) In the above embodiment, the internal electrodes 3266 and 3267, which are plate-shaped electrodes, are used as the wiring within the plug portion 32. However, this is not limiting and any member capable of transmitting power will suffice. For example, the internal electrodes 3266 and 3267 may be formed of electric wires or may be formed of a printed circuit board or the like.

[0124] (3) In the above embodiment, lever portion 328 is configured such that grip portion 3283 is provided at the tip of flat arm portion 3282. However, this is not limiting and any configuration that allows the user to rotate lever portion 328 will suffice. For example, in lever portion 328, grip portion 3283 may be made approximately the same thickness as arm portion 3282 to make it less noticeable.

[0125] (4) In the above embodiment, in the fixed state, the lever portion 328 is configured so that the arm portion 3282 is stored in the storage portion 329 and the grip portion 3283 is not stored, but this is not limiting and it is sufficient if the user can rotate the lever portion 328. For example, the grip portion 3283 may not be provided and the tip portion of the arm portion 3282 may be extended so that the extended portion of the arm portion 3282 is not stored in the storage portion 329 in the fixed state.

[0126] When the user rotates lever portion 328 from the fixed state, the user rotates lever portion 328 by coming into contact with the extended portion of arm portion 3282 that is not stored in storage portion 329. This makes it possible to reduce the portion of lever portion 328 that is likely to be noticed by the user.

[0127] (5) In the above-described embodiment, the connection between the connector portion 351 of the wiring connected from the plug portion 32 and the connector portion 58 of the wiring connected from the power supply portion 61 is performed inside the housing 31, as shown in FIG. 8(a) as an example. However, this is not limited to this, and it is sufficient if the connector portion 351 and the connector portion 58 can be electrically connected, and the connection may be performed, for example, on the upper plate portion 311 of the housing 31.

[0128] (6) In the above-described embodiment, two sets of spring holders and mounting springs are provided, but this is not limited to this. It is sufficient if the fixture body 3 and the light source unit 5 can be fixed. For example, in a lighting fixture that is longer in the longitudinal direction, three or more sets of mounting members may be provided, and in a small lighting fixture, one set of mounting members may be provided.

[0129] (7) In the above-described embodiment, an LED is used as the light source, but this is not limiting and other light sources may be used, such as organic electroluminescence (EL) or organic light-emitting diode (LED), field emission display, etc.

[0130] (8) The above-described embodiments and modifications may be partially combined.

[0131] <3. Extraction of inventions> The configuration of a lighting fixture as one embodiment of the present invention, as well as modifications and effects thereof, will be further described below.

[0132] (1) A lighting fixture according to one embodiment of the present invention is a lighting fixture that is attached to a duct rail and comprises a light source unit and a fixture body to which the light source unit is attached, the fixture body comprising a housing portion and a plug portion attached to the housing portion, the plug portion comprising a power receiving portion that engages with the duct rail to receive external power, a lever portion that rotates the power receiving portion, and a base portion to which the power receiving portion is rotatably attached, and the portion of the wiring that electrically connects to the power receiving portion and electrically connects to the light source unit and that is located within the plug portion is all located above the top surface of the housing portion.

[0133] According to this configuration, the lighting fixture can be used by engaging with a duct rail, and wiring does not need to be passed through the housing, so that a lighting fixture that is thinner than conventional lighting fixtures can be provided.

[0134] (2) The device body may include a wiring cover portion that covers at least a portion of the wiring, and the wiring cover portion may be detachably attached to the upper surface of the housing portion.

[0135] This configuration makes it possible to easily perform maintenance on the wiring inside the wiring cover.

[0136] (3) The wiring cover portion may be configured to fit into an opening in the duct rail so that the position of the lighting fixture relative to the duct rail in the short direction is not shifted when the lighting fixture is attached so as to be electrically connected to the duct rail.

[0137] With this configuration, it is possible to avoid misalignment of the positional relationship between the duct rail and the lighting fixture in the short-side direction, and to easily achieve the desired positional relationship between the duct rail and the lighting fixture.

[0138] (4) The lever portion may include a flat arm portion and a grip portion disposed at the tip of the arm portion, and the vertical thickness of the grip portion may be greater than the thickness of the arm portion.

[0139] According to this configuration, the grip portion that the user holds with his / her fingers is thicker than the arm portion, so that a lighting fixture that is easy for the user to rotate can be provided.

[0140] (5) The base portion may include a storage portion having a portion for storing the lever portion, and when the lighting fixture is attached so as to be electrically connected to the duct rail, the arm portion may be stored in the storage portion, and the underside of the duct rail and the upper surface of the housing portion may be close to each other.

[0141] With this configuration, since the arm portion is not provided on the power receiving portion, the duct rail and the lighting fixture can be placed closer together, and a lighting fixture that looks good when attached to the duct rail can be provided.

[0142] (6) The base portion may be provided with a positioning portion that fits into an opening in the duct rail so that the position of the lighting fixture in the short direction relative to the duct rail does not shift when the lighting fixture is attached so as to be electrically connected to the duct rail.

[0143] With this configuration, it is possible to avoid misalignment of the positional relationship between the duct rail and the lighting fixture in the short-side direction, and to easily achieve the desired positional relationship between the duct rail and the lighting fixture. [Explanation of symbols]

[0144] 1. Lighting equipment 3. Instrument body 5 Light source unit 9 Duct rail 31 Case 32, 33 Plug section 34 Wiring cover 35 Cable section 39 Storage section 51 Support 52 Cover part 53 Light source board 54 Light source 55, 56 Mounting spring 57 Wiring section 58, 351, 353, 354 Connector part 59 Feed wiring 61 Power supply section 91 Main body 92, 93, 324 Locking part 94, 95 Power supply unit 96, 97 Support part 99, 314, 315, 316, 3268 openings 311 Upper plate 312, 313 Side plate part 317, 3247 Hole 320 Power receiving unit 321 Shaft 322, 322o, 323 electrode part 325 Base 326 Upper base 327 Lower base 328 Lever part 329 Storage Unit 342, 343 Side wall 352 Electrical Wire Section 3211 Shaft head 3212 Shaft body 3213 Axis leg 3215 Slope 3221, 3231 contact part 3222, 3232 Torso 3223, 3233 Legs 3241 Upper body 3242 Support plate part 3243 Lower body 3245, 3246 Support part 3261, 3271 Bottom plate part 3262 Positioning part 3263 Exposed electrode part 3266, 3267 internal electrode 3266a, 3266b, 3266c plate part 3272 Ridge 3273 Cylindrical shaft 3274, 3285 Locking protrusion 3281 Proximal end 3282 Arm 3283 Gripping part 3284 Cylinder shaft part 3291 Volts 3292 Nut 3421, 3423 Claws 3422, 3432 Tip

Claims

1. A lighting fixture that can be attached to a duct rail, A light source unit and a fixture body to which the light source unit is attached, The device body includes a housing portion and a plug portion attached to the housing portion, The plug portion is a power receiving section that engages with the duct rail and receives external power; a lever portion that rotates the power receiving unit, and a base portion to which the power receiving unit is rotatably attached, In the wiring for electrically connecting to the power receiving unit and electrically connecting to the light source unit, the portion located inside the plug portion is located above the top surface of the housing portion. Lighting fixtures.

2. The fixture body includes a wiring cover portion that covers at least a portion of the wiring, The wiring cover is detachably attached to the top surface of the housing.

2. The lighting fixture of claim 1.

3. The wiring cover portion is inserted into the opening of the duct rail so as to prevent the position of the lighting fixture relative to the duct rail in the short side direction from shifting when the lighting fixture is attached so as to be electrically connected to the duct rail.

3. The lighting fixture according to claim 2.

4. The lever portion includes a flat arm portion and a grip portion disposed at a tip of the arm portion, The thickness of the gripping portion in the vertical direction is greater than the thickness of the arm portion.

2. The lighting fixture of claim 1.

5. the base portion includes a storage portion having a portion for storing the lever portion, When the lighting fixture is attached so as to be electrically connected to the duct rail, the arm portion is stored in the storage portion, The lower surface of the duct rail and the upper surface of the housing are close to each other.

5. The lighting fixture according to claim 4.

6. The base portion includes a positioning portion that fits into an opening of the duct rail so that the position of the lighting fixture in the short side direction relative to the duct rail does not shift when the lighting fixture is attached so as to be electrically connected to the duct rail.

2. The lighting fixture of claim 1.

Images