JPWO2018003907A1 - Lighting device - Google Patents

Abstract

The lighting device (1) is a long base member (4) fixed to the ceiling surface (6)
And an elongated frame member (2) having a light source unit (5), wherein the light source unit (5)
Frame member (2) mounted on the base member (4) with the
And. A plate spring (23) on the back side of the light source part (5) of the frame member (2)
Is provided along the longitudinal direction of the frame member (2), and the base member (4)
A leaf spring holder (4) having an opening (431) through which the leaf spring (23) can be inserted
3) are provided, and the plate spring (23) is inserted into the opening (4) of the plate spring holder (43).
The frame member (2) is urged toward the base member (4) by being inserted through 31), whereby the frame member (2) is attached to the base member (4).

Description

  The present invention relates to a lighting device installed on a ceiling surface.

  In recent years, lighting devices using light emitting elements such as light emitting diodes (LEDs) as light sources have become widespread. As such a lighting device, for example, a long light source mounting substrate on which light emitting elements such as a plurality of LEDs are linearly mounted is attached to a frame member, and AC (AC) is used to drive the LEDs by DC (direct current) voltage ) A switching power supply for converting the voltage into a DC voltage for power supply is housed inside the frame member, and a cover member that functions as a diffusion unit that covers the light source mounting substrate and also diffuses the irradiation light is attached. Also, a lighting device generally called a base light is known.

  In the conventional base light, a member made of aluminum or aluminum alloy is used for the frame member because of its processing superiority and light weight, and a resin excellent in light diffusion is used for the cover member. When using such an illuminating device, as it describes, for example in patent document 1, the thermal expansion phenomenon in which a flame | frame member and a cover member expand | swell by the heat which generate | occur | produces from a light source part (LED board) has occurred. Then, when a plurality of lighting devices are closely arranged and arranged in tandem, the influence of the thermal expansion is added as many as the number of the arranged lighting devices, which may lead to the deformation and breakage of the frame member and the cover member.

  In order to solve the problem of thermal expansion, the inventor used a frame member, which was conventionally a single member made of a single material, to be two members having different coefficients of thermal expansion, ie, a frame member made of a metal (for example, aluminum) It was conceived that the structure was made of a base member made of metal (for example, stainless steel) having a thermal expansion coefficient lower than that of the frame member. As described above, by using a combination of the frame member and the metal base member having a thermal expansion coefficient lower than that of the frame member instead of one frame member made of a single material, a plurality of lighting devices are closely attached. Even when they are arranged in tandem, the heat generated from the light source hardly thermally expands the base member, and the entire length of the lighting device is substantially maintained even in use.

Japanese Patent Application Publication No. 2015-146263

  When installing the lighting apparatus as described above on the ceiling surface, first fix the base member to the anchor bolt etc. provided on the ceiling surface, and then base the frame member to which the light source mounting substrate and the cover member are attached It fixes to a base member via the torsion spring attached to the member. However, considering that such a lighting device (base light) is long (for example, body length: 2400 mm) and it is necessary to lift the torsion spring with a finger when fixing the frame member to the base member, At least two workers are required for the installation work, and there is a problem that the work efficiency is poor.

  This invention is made in view of such a point, and even if it is a elongate illumination device which has a frame member and a base member, the illumination device which a worker can install by one person is possible. Intended to be provided.

  In order to achieve the above object, the present invention is an elongated frame member having an elongated base member fixed to a ceiling surface and a light source portion, wherein the light source portion faces a floor surface. A frame member attached to the base member, and a plate spring is provided along the longitudinal direction of the frame member on the back side of the light source portion of the frame member, and the plate spring is attached to the base member There is provided a plate spring receiver having an opening through which the frame member is urged toward the base member by inserting the plate spring into the opening of the plate spring holder, thereby the frame member. The present invention provides a lighting device characterized in that is attached to the base member (Invention 1).

  According to the above invention (Invention 1), as a means for attaching the frame member to the base member, a plate spring provided along the longitudinal direction of the frame member, and a plate spring receptacle having an opening through which it is inserted The frame member can be attached to the base member simply by inserting the plate spring through the opening of the plate spring receiver even if there is only one worker, and the lighting device can be easily installed.

  In the said invention (invention 1), it is preferable that the said leaf | plate spring is provided in the longitudinal direction both-ends vicinity of the said frame member (invention 2).

  According to the above invention (Invention 2), by providing the plate springs in the vicinity of both ends of the frame member, the elongated frame member can be stably attached to the base member.

  In the above invention (Invention 1), the leaf spring may be movably provided along the longitudinal direction of the frame member (Invention 3).

  According to the said invention (invention 3), according to the position etc. of the leaf | plate spring receptacle by the side of a base member, a leaf | plate spring can be arrange | positioned in an appropriate position and fine adjustment can be performed.

  In the above inventions (inventions 1 to 3), the plate spring is a flat portion fixed to the frame member, extends from the flat portion toward the longitudinal direction end, and is directed to the ceiling surface. It is preferable to have the arch part formed in convex arc shape (invention 4).

  According to the above invention (Invention 4), since the arch portion of the leaf spring is extended from the flat portion toward the longitudinal end (i.e., the outer side of the frame member), one worker is the end of the frame member By holding the portion, the tip end of the leaf spring provided on the opposite end side can be easily inserted through the opening of the leaf spring receiver provided on the base member.

  In the said invention (invention 4), it is preferable that the front-end | tip part of the said arch part is formed so that latching to the peripheral part of the said opening is possible (invention 5).

  According to the above invention (Invention 5), the frame member can be supported by the base member in a temporarily fixed state by locking the tip of the arch of the plate spring to the peripheral edge of the opening of the plate spring holder. Therefore, even if there is only one worker, wiring work can be easily performed.

  In the above inventions (inventions 1 to 5), the base member has a bowl shape having a bottom wall portion located on the ceiling surface side, and both side wall portions extended from the bottom wall portion to the floor surface side. And having a bent portion formed by bending the open end sides of the both side wall portions toward the other side wall portion, and the plate spring receiver includes one bent portion and the other bent portion. Preferably, the base member is provided so as to pass between the first and second bent portions (invention 6).

  According to the above invention (Invention 6), even when the plate spring receiver is detached from the base member for some reason, the light spring unit including the frame member falls as it is because the plate spring receiver is caught on the bending portion Workers can safely perform the installation work because there is no

  In the said invention (invention 1-6), it is preferable that the said base member is comprised using the field material (invention 7). Noble wood manufactured as a general ceiling base material can be procured at a very low cost because it is manufactured in common and in large quantities.

  According to the said invention (invention 7), the manufacturing cost of an illuminating device can be reduced significantly, by using a waste material as a constituent material of a base member.

  In the above inventions (inventions 1 to 7), a resin base end member is provided at the end of the base member, and a part of the base end member can be bent toward the inside of the base member Preferably, it is formed (invention 8).

  According to the invention (invention 8), a part of the base end member which is formed to be bendable is bent to provide an opening through which a wire passes, or the opening which has been provided once is returned by returning the bent part. Can be

  In the above inventions (inventions 1 to 8), the partition member is provided on the base member so as to surround a space where the leaf spring is located in the base member in a state where the frame member is attached to the base member. It may be provided (invention 9).

  According to the said invention (invention 9), the space for passing a cable in a base member can be ensured, without interfering with a leaf | plate spring.

  Although the illumination device of the present invention is a long illumination device having a frame member and a base member, it can be installed by a single worker.

It is a perspective view showing the structure of the lighting installation concerning this embodiment. It is a perspective view which shows the structure of the same illuminating device in a disassembled state. It is sectional drawing which shows the structure of the same illuminating device in a disassembled state. It is explanatory drawing which shows the cross-sectional shape of the flame | frame main body of the illuminating device. It is an explanatory view showing the structure of the frame end member of the lighting installation. It is explanatory drawing which shows the structure of the leaf | plate spring of the same illuminating device. It is an explanatory view showing the structure of the base end member of the lighting installation. It is an explanatory view showing the structure of the leaf spring receptacle of the lighting device. It is a schematic diagram which shows the state of each member before and behind the thermal expansion of the illuminating device. It is a schematic diagram which shows the flow which attaches the same illuminating device to a ceiling surface. It is an explanatory view showing modification 1. FIG. 10 is an explanatory view showing a modification 2; FIG. 18 is an explanatory view showing a modification 3; FIG. 18 is an explanatory view showing a modification 4;

  Hereinafter, embodiments of the present invention will be described in detail based on the drawings. First, the structure of the illumination device 1 according to the present embodiment will be described with reference to FIGS. The lighting device 1 is attached to the indoor ceiling surface 6 by being fixed to an anchor bolt 7 extending vertically downward from a building frame (not shown).

  The illumination device 1 is accommodated in the elongated frame member 2, the elongated cover member 3 attached to the frame member 2 so as to cover the lower surface side of the frame member 2, and the frame member 2. And the elongated base member 4 attached to the frame member 2 so as to face the cover member 3 with the frame member 2 in between, and the elongated light source portion attached to the outer side of the bottom surface of the frame member 2 It comprises a certain LED mounting substrate 5 and a switching power supply (not shown) housed in the inside of the frame member 2 to supply drive power to the LEDs. The elongated base member 4 of the lighting device 1 is fixed to the ceiling surface 6 by being attached to the anchor bolt 7, and the elongated frame member 2 having the LED mounting substrate 5 which is a light source portion is the LED mounting substrate 5. Is attached to the base member 4 so that it faces the floor surface.

  The frame member 2 has a trapezoidal shape having a rectangular shape in plan view and an inverted Fuji-yama shape in a longitudinal sectional view, the side (upper side in FIGS. 2 and 3) attached to the ceiling surface being open and the lower side being substantially flat. The two frame end members 22 are attached to both ends of the frame body 21 by a fixing means such as screwing. Inside the bottom surface 211 of the frame main body 21, a plate spring 23 is provided in the vicinity of both ends. Further, on the outer side of the bottom surface 211 of the frame main body 21, a substrate mounting slot 212 is formed in which the LED mounting substrate 5 can be inserted by sliding. Further, mounting groove portions 213 for mounting the cover member 3 to the frame member 2 are formed at both end portions of the bottom surface 211 of the frame main body 21. The substrate mounting slot 212 and the mounting groove portion 213 are integrally formed with the frame body 21.

  Since the frame body 21 is made of aluminum alloy, it functions as a heat sink for radiating the self-generated heat of the LEDs of the LED mounting substrate 5 mounted in the substrate mounting slot 212. While the conventional heat sink is a relatively small member disposed in the portion receiving the LED mounting substrate 5, in the frame member 2 of the present embodiment, the entire frame body 21 is a heat sink, and the structure with extremely high heat dissipation effect Thus, it is possible to prevent the deterioration of the electronic circuit inside the LED due to heat and extend the life of the LED.

The frame main body 21 of the frame member 2 of the present embodiment is manufactured by extrusion molding of an aluminum alloy, and the substrate mounting slot 212 and the mounting groove portion 213 are integrally molded. The metal used as the raw material of the frame body 21 is not necessarily limited to the aluminum alloy, but for example, a metal having a thermal expansion coefficient in the range of 20 to 28 (× 10 ⁻⁶ / ° C.) should preferably be used it can. Moreover, the manufacturing method of the frame main body 21 can also be suitably selected according to the characteristic of the metal used as a raw material.

  In the present embodiment, as shown in FIG. 4, the angle θ between two legs 214 located on both sides of the bottom surface 211 of the frame body 21 is approximately 90 degrees in a longitudinal sectional view of the frame body 21. It has become. With such a shape, the rigidity is increased even when the frame main body 21 is made of the above-mentioned material, for example, when the end of the elongated frame member 2 having a main body length of 2400 mm is held. In addition, the entire frame member 2 is not bent.

  As shown in FIG. 5, the frame end member 22 is provided on the end of the frame main body 21 with a side wall portion 221 located outside when attached to the end of the frame main body 21 and functioning as a side wall of the frame member 2. When attached, it is located inside and fitted to the end of the frame main body 21 and is fitted into the inside of the end of the cover member 3 described later to overlap.

  The side wall portion 221 has a shape in which an elliptical side wall oval portion 221 b is joined to an upper portion of the trapezoidal side wall trapezoidal portion 221 a. The inclined surfaces on both sides of the side wall trapezoidal portion 221 a have an inclination angle corresponding to the inclined surfaces extended from the mounting groove portions 213 at both ends of the upper surface of the frame main body 21. The oval shape of the side wall oval portion 221 b is a shape corresponding to the oval shape of the cover member 3.

  The fitting portion 222 has a shape in which an elliptical fitting oval portion 222b slightly smaller than the side wall elliptical portion 221b is coupled to an upper portion of a trapezoidal shaped trapezoidal portion 222a slightly smaller than the side wall trapezoidal portion 221a. The inclined surfaces on both sides of the fitting trapezoidal portion 222 a have an inclination angle corresponding to the inclined surfaces extended from the mounting grooves 213 at both end portions of the lower surface of the frame main body 21. A part of the inclined surface extending from the groove 213 abuts on the inclined surface of the fitting trapezoidal portion 222a. Further, the oval shape of the fitting oval portion 222b is a shape corresponding to the oval shape of the cover member 3, so that the end of the cover member 3 covers a part of the fitting oval portion 222b. Can be attached to the frame member 2.

  The frame end member 22 is manufactured, for example, by injection molding of a resin such as ABS or polycarbonate. By making the frame end member 22 of resin, even when the lighting device 1 is configured by combining the respective members, the sense of unity on the appearance is not lost.

  As shown in FIG. 6, on the inner side of the bottom surface 211 of the frame main body 21, plate springs 23 are provided in the vicinity of both end portions thereof. The flat spring 23 is a flat portion 231 fixed to the frame body 21 of the frame member 2 by fixing means such as screws, extends from the flat portion 231 toward the longitudinal direction end, and faces the ceiling surface 6 The tip end portion 233 of the arch portion 232 is folded back toward the flat portion 231 to form a bowl shape.

  As shown in FIGS. 2 and 3, the cover member 3 is an elongated member made of resin that covers the LED mounting substrate 5 and also functions as a diffusion member that diffuses the irradiation light of the LED. The cover member 3 is mounted on the frame member 2 by fitting the attachment claws 31 formed on the upper end sides of the cover member 3 to the attachment grooves 213 formed on both ends of the lower surface of the frame main body 21 of the frame member 2. It is attached. The cover member 3 has a C-shaped cross-sectional view in which the upper portion (the side attached to the frame member 2) of the tube having an oval cross-section is opened, and can be made of, for example, milky white polycarbonate.

  As shown in FIGS. 2 and 3, the base member 4 is opened on the side opposite to the side attached to the ceiling surface 6 (the lower side in FIGS. 2 and 3) and is located on the ceiling surface 6 side Screws are provided at both ends of a bowl-shaped elongated base body 41 having a rectangular shape in a plan view and a C-shape in a longitudinal cross-sectional view, having side wall portions 412 extended from the bottom wall portion 411 to the floor side. Two base end members 42 are attached by fixing means such as stoppers. The open end side of the side wall portion 412 is bent toward the other side wall portion 412 to form a bent portion 413. A plate spring receiver 43 is provided in the vicinity of the inner both end portions of the base main body 41 so as to correspond to the plate springs 23 provided in the vicinity of the inner both end portions of the frame main body 21 of the frame member 2. The frame member 2 can be fixed to the base member 4 by inserting it through the opening 431 of the leaf spring receiver 43.

The base main body 41 of the base member 4 of the present embodiment is made of iron, and is manufactured by bending of a steel plate or roll forming of a rolled steel plate. The metal used as the raw material of the base body 41 is not necessarily limited to iron, and for example, a metal having a thermal expansion coefficient smaller than that of the metal used for the frame body 21 of the frame member 2 can be suitably used. Further, for example, a metal having a thermal expansion coefficient in a range of 10 to 12 (× 10 ⁻⁶ / ° C.) can be suitably used, and the method of manufacturing the base main body 41 can be appropriately selected according to the characteristics of the metal used as a raw material. can do.

  In particular, as the base main body 41 of the base member 4, a stainless steel plate or a steel material made of a hot-dip galvanized steel plate can be used. Since a large amount of nodock material manufactured as a general ceiling base material is manufactured at a common size and can be procured at a very low cost, by using the nod space material as the base main body 41 The manufacturing cost of the lighting apparatus 1 can be significantly reduced.

  As shown in FIG. 7, the base end member 42 is attached to an end portion of the base main body 41, and a side wall portion 421 located outside when attached to the end portion of the base main body 41 and functioning as a side wall of the base member 4. When this is done, it is positioned inside and fitted to the end of the base body 41, and the fitting portion 422 is embedded inside the end of the frame body 21 of the frame member 2 to overlap.

  Side wall portion 421 has a height lower than that of plate portion 421a in plate shape 421a in a side view Fuji shape, and the inclined surfaces on both sides are continuous from the inclined surfaces on both sides of plate portion 421a and have the same inclination angle It has the shape where the block part 421b of Fuji mountain shape was bonded together. The fitting portion 422 has the same height as that of the block portion 421b of the side wall portion 421, but has a sloped side surface on both sides starting from a slightly centering position than the block portion 421b. The plate portion 421a and the block portion 421b of the side wall portion 421 and the inclined surfaces on both sides of the fitting portion 422 have inclination angles corresponding to the inclined surfaces extended from the mounting groove portions 213 on the upper surface both ends of the frame main body 21. In the state where the base member 4 is attached to the frame member 2, a part of the inclined surface extended from the attachment groove portion 213 at the upper end of the frame main body 21 is in contact with the inclined surface of the fitting portion 422. Contact.

  The base end member 42 is manufactured, for example, by injection molding of a resin such as ABS or polycarbonate. By making the base end member 42 of resin, even when the lighting device 1 is configured by combining the respective members, the sense of unity on the appearance is not lost. Further, a slit 421c is inserted in a substantially rectangular shape in the side wall portion 421 of the base end member 42, and an opening can be provided in the side wall portion 421 by pushing a portion surrounded by the slit 421c. As described above, when the base end member 42 is made of resin, when arranging the plurality of lighting devices 1 in tandem, the side wall surface of the base end member 42 to be in contact with another adjacent lighting device is easily opened. The openings can be used to pass wires between adjacent lighting devices.

  In particular, in the present embodiment, the slit 421c inserted in the side wall portion 421 of the base end member 42 is intermittently formed only on one side of the substantially rectangular shape (the side located on the upper side in FIG. 7). When the enclosed portion is pushed in, the portion is devised so as to remain connected without being separated from the side wall portion 421. As described above, by forming a part of the side wall part 421 so as to be bendable toward the inside of the base member 4, the part is bent to provide an opening through which the wiring passes, or the bent part is returned if necessary. Thus, the opening once provided can be restored.

  As shown in FIG. 8, the plate spring receiver 43 has a rectangular plate-like support portion 432 in which an opening 431 for inserting the plate spring 23 is formed, and the plate spring receiver 43 is screwed to the base main body 41. A fixing portion 433 fixed by fixing means, and two hooking portions 434 provided on both sides of the support portion 432 so as to be orthogonal to the support portion 432 are included. The leaf spring receiver 43 is fixed to the base main body 41 so that the two engaging portions 434 fit in the space 414 formed by the bottom wall 411, the side wall 412 and the bending portion 413 of the base main body 41. There is. Before attaching the base end member 42 to the base main body 41, the leaf spring receiver 43 is inserted so as to slide from the end of the base main body 41, and fixed at a predetermined position by fixing means such as screws. . Thus, the leaf spring receiver 43 is detached from the base body 41 for some reason by providing the leaf spring receiver 43 on the base member 4 so as to pass between the two bent portions 413 of the base body 41. Even in the case where the failure occurs, since the light emitting unit including the frame member 2 does not fall as it is because the plate spring receiving tool 43 is hooked on the bent portion 413, the worker can safely perform the mounting operation.

  The LED mounting substrate 5 is formed by arranging a plurality of LEDs at predetermined intervals on a long LED substrate, and is slide-inserted into a substrate mounting slot 212 formed on the lower surface outside of the frame main body 21 of the frame member 2 To be worn. The LED mounting substrate 5 is only detachably inserted into the substrate mounting slot 212, and has a structure that can be easily replaced as needed.

  A switching power supply (not shown) converts an AC (alternating current) voltage supplied via a power supply cable (not shown) extending from the inside of the ceiling into a DC voltage in order to drive the LED with a DC (direct current) voltage It is for transmitting power to the mounting substrate 5 and is accommodated and fixed inside the frame member 2. Alternatively, the switching power supply (not shown) may be accommodated inside the base member 4 and fixed so as to abut on the frame member 2 in a state where the base member 4 is attached to the frame member 2.

In the present embodiment, the frame member 2 is formed to be longer than the cover member 3, and the end of the cover member 3 covers a part of the fitting oval portion 222 b of the frame end member 22 of the frame member 2. Although the cover member 3 is attached to the frame member 2, as shown in FIG. 1, when the cover member 3 is attached to the frame member 2, it is between the end of the cover member 3 and the side wall 221 of the frame end member 22. still have room, which serves as a first space S ₁ that allows the deformation due to thermal expansion of the cover member 3.

Here, the end of the cover member 3 overlaps with part of the frame end member 22 provided at the same end of the frame member 2, and by making the frame member 2 longer than the cover member 3 the first space S ₁ that is provided will be provided on the end frame members 22. Therefore, even if the frame member 2 is longer than the cover member 3, there is no gap between the cover member 3 and the frame member 2 that exposes the inside of the lighting device 1, and the appearance of the lighting device 1 There is no deterioration in lighting performance or deterioration in lighting performance.

Further, in the present embodiment, the base member 4 is formed to be longer than the frame member 2, and the end of the frame member 2 covers a part of the fitting portion 422 of the base end member 42 of the base member 4. The frame member 2 is attached to the base member 4, but as shown in FIG. 1, when the frame member 2 is attached to the base member 4, between the end of the frame member 2 and the side wall portion 421 of the base end member 42 still have room, which serves as a second space S ₂ to permit deformation due to thermal expansion of the frame member 2 and the cover member 3 in.

Here, the end of the frame member 2 overlaps with a part of the base end member 42 provided at the same end of the base member 4, thereby making the base member 4 longer than the frame member 2. the second space S ₂ which is provided will be provided on the base end member 42. Therefore, even if the base member 4 is longer than the frame member 2, there is no gap between the frame member 2 and the base member 4 that exposes the inside of the lighting device 1, and the appearance of the lighting device 1 is improved. There is no deterioration in lighting performance or deterioration in lighting performance.

It will be specifically described with reference to FIG. 9 that the lighting device 1 according to the present embodiment is not influenced by thermal expansion even when the lighting devices 1 are closely arranged and arranged in tandem. FIG. 9A shows a state before thermal expansion of the cover member 3 and the frame member 2 occurs due to heat generated from the light source portion, and as described above, the end of the cover member 3 and the frame end member 22 frame members 2 and between the first space S ₁ is, the side wall portion 421 of the end portion and the base end member 42 of the frame member 2 that allows the deformation due to thermal expansion of the cover member 3 is provided between the side wall portion 221 the second space S ₂ to permit deformation due to thermal expansion of the cover member 3 is in the state respectively provided.

Then, since the frame member 2 is longer than the cover member 3 and the first space S ₁ is provided at the end of the frame member 2 to allow deformation of the cover member 3 due to thermal expansion, the LED when using the lighting device 1 be expanded in the longitudinal direction the cover member 3 by heat generated from the mounting substrate 5, the first space S ₁ is to absorb the expansion amount. Specifically, as shown in FIG. 9 (b), even if the cover member 3 is expanded in the length direction by the heat generated from the LED mounting substrate 5, the end of the cover member 3 is the frame end member 22. The thermal expansion is allowed until the first space S ₁ is filled in contact with the side wall portion 221 of the

Furthermore the base member 4 is longer than the frame member 2, the second space S ₂ to permit deformation due to thermal expansion of the cover member 3 and the frame member 2 to the end of the base member 4 is provided separately, the lighting device 1 by heat generated from the LED mounting substrate 5 in use up to the frame member 2 not only the cover member 3 is also expanded in the longitudinal direction, the second space S ₂ to absorb the expansion amount. Specifically, as shown in FIG. 9C, even if the frame member 2 is expanded in the length direction by the heat generated from the LED mounting substrate 5, the end of the frame member 2 is the base end member 42. the side wall portion 421 to contact with the second space S ₂ is filled thermal expansion is allowed. If thus an illumination device 1 of this embodiment, the permit deformation due to thermal expansion of the first space S ₁ and the cover member 3 and the frame member 2 that allows the deformation due to thermal expansion of the cover member 3 at both ends for 2 space S ₂ is provided, there is no influence due to thermal expansion even when arranged in tandem by a plurality closely.

In particular, when the cover member 3 is made of resin and the frame member 2 is made of metal, the degree of expansion due to thermal expansion of the two is different, and the amount of expansion of the cover member 3 is larger than that of the frame member 2 Even if the cover member 3 thermally expands _first and fills the first space S1, and the cover member 3 further thermally expands and pushes the frame member 2 out, the expansion of the frame member 2 becomes the second space. Since the structure is such that S ₂ absorbs separately, it is not necessary to provide the cover member 3 with a particularly wide expansion and absorption space. At this time, since the base member 4 is made of iron whose thermal expansion coefficient is smaller than that of the frame member 2, the heat generated from the LED mounting substrate 5 hardly causes the thermal expansion of the base member 4. Is almost maintained even in use.

  A procedure of installing the lighting apparatus 1 having the structure described above on the ceiling surface 6 will be described. The following procedure is basically performed by one worker.

  First, as shown in FIG. 10 (a), the base member 4 is attached to two anchor bolts 7 extending vertically downward from a building frame (not shown). The base member 4 is installed such that the outside surface of the bottom wall 411 of the base body 41 is on the ceiling surface 6 side.

  Subsequently, the worker attaches the frame member 2 to which the LED mounting substrate 5 and the cover member 3 have already been attached to the base member 4. First, as shown in FIG. The tip end 233 of the leaf spring 23 on one end side (the leaf spring 23 on the left side in the figure) is inserted into the opening 431 of the leaf spring receiver 43 of the base member 4 Do. At this time, rigidity is enhanced by the frame main body 21 having a shape such that an angle θ between two legs 214 located on both sides of the bottom surface 211 in a longitudinal cross-sectional view is approximately 90 degrees. Therefore, even if it is a long frame member, there is no hindrance that one worker can cantilever and proceed with the mounting operation.

  Next, as shown in FIG. 10C, the tip end portion 233 of the plate spring 23 on the opposite end side (the plate spring 23 on the right side in the figure) is inserted into the opening 431 of the plate spring receiver 43 of the base member 4 It locks on the peripheral edge of the opening 431. In a state where the frame member 2 is temporarily fixed to the base member 4 in this manner, a worker carries out the wiring work by one person.

  Finally, by pushing up the frame member 2 to the base member 4 side, the two plate springs 23 are respectively inserted into the openings 431 of the plate spring holder 43 to the back, and as shown in FIG. The frame member 2 is attached to the base member 4 by the biasing force of

Modification 1

  By manufacturing the frame body 21 by extrusion of an aluminum alloy, the plate spring 23 is not directly attached to the back side of the substrate mounting slot 212 (that is, the side on which the plate spring 23 is provided) by fixing means such as screwing. The leaf spring 23 may be movably attached along the longitudinal direction of the frame member 2. For example, as shown in FIG. 11, two plate springs that attach the plate spring 23 to the plate spring mounting bracket 24 and sandwich both sides of the plate spring mounting bracket 24 on the back side of the board mounting slot 212 of the frame body 21. If the mounting rail 214 is provided, the leaf spring 23 can be fixed at any position in the longitudinal direction of the frame member 2.

Modification 2

  By making the base end member 42 of resin, the base main body 41 can be attached and fixed so as to be inserted into the base end member 42 without using fixing means such as screws. For example, as shown in FIG. 12, an inner wall 423 matching the shape of the base body 41 is appropriately provided inside the base end member 42, and an opening 4111 is formed in the bottom wall 411 of the base body 41. When the claw portion 424 is provided on the inner surface and the base main body 41 is inserted into the space surrounded by the inner wall portion 423 of the base end member 42 and integrated, the plugging portion 424 is fitted to the opening 4111 to obtain the base end member. 42 can be fixed to the base body 41.

Modification 3

  Although various cables are wired in the lighting device 1 (base member 4), a very hard coating film such as a VVF cable is also included therein. Since such a cable may interfere with the plate spring 23 when it is arranged in the lighting device 1, the space S1 in which the plate spring 23 is accommodated and the space S2 for passing the cable are divided. It can also be a base member 4 structure provided. For example, as shown in FIG. 13, with the frame member 2 attached to the base member 4, the partition member 44 is screwed to the base member 4 so as to surround the space S1 in the base member 4 where the leaf spring 23 is located. It is fixed by the fixing means of. Thereby, space S2 for passing a cable can be ensured, without interfering with leaf spring 23.

Modification 4

  When using a roof material manufactured as a general ceiling base material as the base main body 41 of the base member 4, such a roof material is an open end side of the side wall portion 412 over the entire length in the longitudinal direction in the initial state. A bent portion 413 is formed on the side. Since the bent portion 413 protrudes toward the inside of the base main body 41, the space in the width direction of the base main body 41 is limited, and it may be difficult to arrange a switching power supply, the aforementioned VVF cable, etc. . For example, as shown in FIG. 14, the base main body 41 made of wood material is squeezed in the direction of the side wall portion 412 in the portion where the power supply is disposed, and the other portion is bent as it is. By leaving 413, the side wall portion 412 can have a structure including both the portion where the bent portion 413 is formed and the portion where the bent portion 413 is not formed. With such a structure, the power supply, the VVF cable, etc. can be disposed from above (from the open surface side toward the bottom wall 411) in the portion where the bending portion 413 is not formed, and the bending In the portion where the portion 413 is formed, the bent portion 413 functions as a guide of the VVF cable, so that the wiring in the lighting device 1 can be stably routed.

  As mentioned above, although the illuminating device which concerns on this invention was demonstrated based on drawing, this invention is not limited to the said embodiment, A various change implementation is possible.

  For example, in the present embodiment, the flat spring 231 is fixed to the frame main body 21 by fixing means such as screws, and the arch portion 232 is formed in an arc shape convex toward the ceiling surface 6 , And the tip end portion 233 of the arch portion 232 has a wedge shape, but it is not limited thereto, as long as the frame member 2 can be pressed to the base member 4 side with at least an urging force, A leaf spring having another structure may be employed. In addition, a rectangular plate-shaped support portion 432 having an opening 431 for inserting the leaf spring 23 through the leaf spring receiver 43, a fixing portion 433 for fixing to the base main body 41, and both sides of the support portion However, the present invention is not limited to this, and at least a leaf spring having another structure as long as it has an opening 431 through which the leaf spring 23 is inserted. A receiver may be adopted.

  Further, the configuration of the lighting device 1, the shapes of the frame member 2, the cover member 3, the base member 4 and the like, the arrangement of the LEDs on the LED mounting substrate 5, and the like can be freely changed.

DESCRIPTION OF SYMBOLS 1 lighting apparatus 2 frame member 21 frame main body 211 bottom 212 board mounting slot 213 mounting groove 22 frame end member 221 side wall 221a side wall trapezoidal portion 221b side wall oval portion 222 fitting portion 222a fitting trapezoidal portion 222b fitting oval portion 23 plate spring 231 flat portion 232 arch portion 233 tip portion 3 cover member 31 attachment claw portion 4 base member 41 base main body 411 bottom wall portion 412 side wall portion 413 bent portion 42 base end member 421 side wall portion 421 a plate portion 421 b block portion 421 c slit 422 fitting Joint portion 43 Flat spring holder 431 Opening 432 Support portion 433 Fixing portion 434 Hooking portion 5 LED mounting board 6 Ceiling surface 7 Anchor bolt

Claims (9)

An elongated base member fixed to the ceiling surface;
An elongated frame member having a light source unit, the frame member attached to the base member such that the light source unit faces a floor surface;
A leaf spring is provided along the longitudinal direction of the frame member on the back side of the light source unit of the frame member,
The base member is provided with a plate spring receiver having an opening through which the plate spring can be inserted,
An illumination device characterized in that the frame member is biased toward the base member by inserting the plate spring into the opening of the plate spring holder, whereby the frame member is attached to the base member.   The lighting device according to claim 1, wherein the leaf spring is provided in the vicinity of both longitudinal end portions of the frame member.   The lighting device according to claim 1, wherein the leaf spring is movably provided along the longitudinal direction of the frame member.   A flat portion fixed to the frame member, and an arch portion extending from the flat portion toward the longitudinal direction end and having an arc shape protruding toward the ceiling surface; The lighting device according to any one of claims 1 to 3, characterized in that   The lighting device according to claim 4, wherein a distal end portion of the arch portion is formed to be lockable at a peripheral edge portion of the opening. The base member is in a bowl shape having a bottom wall located on the ceiling surface side and both side walls extending from the bottom wall to the floor surface, and the open end of the both side walls It has a bent portion formed by bending one side to the other side wall,
The plate spring receiver according to any one of claims 1 to 5, wherein the leaf spring receiver is provided on the base member so as to pass between the one bent portion and the other bent portion. A lighting device according to item 5. The lighting device according to any one of claims 1 to 6, wherein the base member is configured using a wood material. A resin base end member is provided at an end of the base member,
The lighting device according to any one of claims 1 to 7, wherein a part of the base end member is formed so as to be bendable toward the inside of the base member.   The base member is provided with a partition member so as to surround a space where the leaf spring is located in the base member in a state where the frame member is attached to the base member. The lighting device according to any one of Items 1 to 8.

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