JP2014146533A - Led lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting device which can be installed in a smaller space.SOLUTION: An LED lighting device 101 has: an LED light source part 200 which has an LED chip and emits light in a z direction; a power supply part 300 which supplies electric power to light the LED chip and is placed apart from the LED light source part 200 in an x direction; and a joint member 400 which has a light source side connection part 410 connected to the LED light source part 200, a power supply side connection part 420 connected to the power supply part 300, a bending part 430 that positions the power supply side connection part 420 above the light source side connection part 410 in the z direction, and which can be in a bent state.

Description

  The present invention relates to an LED lighting apparatus.

  Various types of LED lighting fixtures using LED chips as light sources have been proposed. Patent Document 1 discloses an LED lighting device configured as a so-called downlight intended to illuminate an indoor floor surface or wall surface by being attached to a ceiling provided with an opening. This LED lighting fixture has an LED light source part and a power supply part. The LED light source unit has a plurality of LED chips and a reflector surrounding the LED chips. The power supply unit receives, for example, commercial AC 100 power, and outputs DC power suitable for lighting the LED light source unit. In a state where the LED lighting fixture is attached to the ceiling, the power supply unit is mounted above the LED light source unit.

  In general, the ceiling has various internal structural materials for supporting the exterior plate in addition to the exterior plate facing the floor surface. The internal structural material is disposed along the exterior plate (lower layer structural material), or is disposed above the exterior plate with a predetermined gap from the exterior plate (intermediate layer structural material) )and so on. For example, when mounting a plurality of the LED lighting fixtures in one room, it is preferable to arrange the plurality of LED lighting fixtures at an equal pitch in order to ensure uniform illumination. However, it is possible that the mounting position of any of the LED lighting fixtures coincides with the intermediate layer structure material. Since this middle layer structural material supports the lower layer structural material and the exterior plate, it is difficult to cut partially. For this reason, it will be forced to shift the attachment position of the said LED lighting fixture.

JP 2009-170126 A

  The present invention has been conceived under the circumstances described above, and an object thereof is to provide an LED lighting apparatus that can be installed in a smaller space.

  An LED lighting apparatus provided by the present invention has an LED chip, and supplies an LED light source unit that emits light in a first direction and power for lighting the LED chip, and the LED light source unit On the other hand, there are a power supply unit that is spaced apart in a second direction perpendicular to the first direction, a light source side connection unit connected to the LED light source unit, and a power supply side connection unit connected to the power supply unit. And a connecting member capable of taking a bent state having a bent portion that positions the power source side connecting portion on the opposite side in the emission direction in the first direction with respect to the light source side connecting portion. .

  In a preferred embodiment of the present invention, the connecting member always takes the bent state.

  In a preferred embodiment of the present invention, the connecting member is made of an elastically deformable material.

  In a preferred embodiment of the present invention, the connecting member is made of a metal plate.

  In a preferred embodiment of the present invention, the connecting member takes a straight state without the bent portion when an external force is not applied, and takes the bent state when an external force is applied.

  In preferable embodiment of this invention, when the said LED light source part is attached to the opening provided in the ceiling, and the said power supply part is arrange | positioned inside a ceiling, the said connection member is more than the said bending state. A strongly bent state in which the distance between the power supply side connection portion and the light source side connection portion in the first direction is large is taken.

  In preferable embodiment of this invention, when the said LED light source part is attached to the opening provided in the ceiling, and the said power supply part is arrange | positioned inside a ceiling, the said connection member is more than the said bending state. A weakly bent state in which the distance between the power supply side connection portion and the light source side connection portion in the first direction is small is taken.

  In preferable embodiment of this invention, the said connection member has a cable holding part for hold | maintaining the relay cable which connects the said LED light source part and the said power supply part.

  In a preferred embodiment of the present invention, the connecting member has a groove portion that is perpendicular to the second direction.

  In preferable embodiment of this invention, the said power supply part has a part located in the output direction side in the said 1st direction rather than the said power supply side connection part.

  In a preferred embodiment of the present invention, all of the power supply units are located closer to the emission direction side in the first direction than the power supply side connection unit.

  In preferable embodiment of this invention, the said power supply side connection part is connected to the site | part near the said LED light source part in the said 2nd direction among the said power supply parts.

  In a preferred embodiment of the present invention, the power supply unit is located on the side opposite to the LED light source unit in the second direction and opposite to the emission direction in the first direction. In FIG. 2, an inclined surface is formed so as to be separated from the LED light source portion as it goes in the emission direction.

  In a preferred embodiment of the present invention, the power supply unit has a connection terminal to which a power supply power cable is connected from the side opposite to the LED light source unit in the second direction.

  In a preferred embodiment of the present invention, the LED light source unit includes a reflector that surrounds the LED chip in the first direction and has a cross-sectional dimension that increases in the first direction toward the emission direction.

  In a preferred embodiment of the present invention, the reflector is made of resin.

  In a preferred embodiment of the present invention, the LED light source unit has a heat radiating member that is located on the opposite side to the emitting direction in the first direction with respect to the reflector and that radiates heat from the LED chip.

  In a preferred embodiment of the present invention, the heat radiating member is made of metal.

  In a preferred embodiment of the present invention, the LED chip is mounted on the heat dissipation member via an LED substrate.

  In preferable embodiment of this invention, the said reflector has a part located in the output direction side in the said 1st direction rather than the said light source side connection part of the said connection member.

  In preferable embodiment of this invention, the said heat radiating member has a part located in the opposite side to the output direction in the said 1st direction rather than the said light source side connection part of the said connection member.

  In preferable embodiment of this invention, the said heat radiating member has a some convex part which protrudes on the opposite side to the output direction in the said 1st direction.

  According to such a structure, when attaching the said LED lighting fixture to a ceiling, the said LED light source part can be located in the output direction side in the said 1st direction with respect to the said power supply part. Thus, the LED lighting apparatus does not need to be tilted so much with respect to the ceiling in a state where the power supply unit is inserted into the space above the ceiling and most of the LED light source units are located below the ceiling. For this reason, it is possible to avoid the said power supply part interfering with a middle-layer structure material, for example, and the said LED lighting fixture can be installed in a smaller space.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a perspective view which shows the LED lighting fixture accompanying 1st Embodiment of this invention. It is a top view which shows the LED lighting fixture of FIG. It is sectional drawing which follows the III-III line of FIG. It is sectional drawing which follows the IV-IV line of FIG. It is a top view which shows an example of the LED light emission part of the LED lighting fixture of FIG. It is a principal part expanded sectional view in alignment with the VI-VI line of FIG. It is a top view which shows the other example of the LED light emission part of the LED lighting fixture of FIG. It is principal part sectional drawing which follows the VIII-VIII line of FIG. It is a top view which shows an example of the connection member of the LED lighting fixture of FIG. It is sectional drawing which follows the XX line of FIG. It is a top view which shows the other example of the connection member of the LED lighting fixture of FIG. It is principal part sectional drawing which follows the XII-XII line | wire of FIG. It is sectional drawing which shows the process of attaching the LED lighting fixture of FIG. 1 to a ceiling. It is sectional drawing which shows the process of attaching the LED lighting fixture of FIG. 1 to a ceiling. It is sectional drawing which shows the process of attaching the LED lighting fixture of FIG. 1 to a ceiling. It is sectional drawing which shows the LED lighting fixture accompanying 2nd Embodiment of this invention. It is sectional drawing which shows the state which attached the LED lighting fixture of FIG. 16 to the ceiling. It is sectional drawing which shows the LED lighting fixture accompanying 3rd Embodiment of this invention. It is sectional drawing which shows the state which attached the LED lighting fixture of FIG. 18 to the ceiling. It is sectional drawing which shows the LED lighting fixture concerning 4th Embodiment of this invention. It is a perspective view which shows the LED lighting fixture accompanying 5th Embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  1 to 4 show an LED lighting apparatus according to a first embodiment of the present invention. The LED lighting apparatus 101 of this embodiment includes an LED light source unit 200, a power supply unit 300, and a connecting member 400. The z direction in the figure is the first direction referred to in the present invention, and the direction indicated by the arrow is the emission direction. The x direction is the second direction referred to in the present invention. FIG. 1 is a perspective view of the LED lighting apparatus 101, and FIG. 2 is a plan view of the LED lighting apparatus 101. 3 is a cross-sectional view in the zx plane along III-III in FIG. 2, and FIG. 4 is a cross-sectional view in the yz plane along line IV-IV in FIG.

  The LED light source unit 200 includes a frame 210, a heat dissipation member 220, and an LED light emitting unit 230. In addition, the structure of this embodiment is an example of the LED light source part said by this invention. For example, the frame 210 and the heat dissipation member 220 may be integrally formed. Further, each of the frame body 210 and the heat radiating member 220 may be formed of a plurality of components.

  The frame 210 is made of resin, for example, and is a component that constitutes most of the appearance from the floor side in a state where the LED lighting apparatus 101 is attached to the ceiling 810. The frame body 210 includes a reflector 211, a flange portion 212, and an engaging portion 213. Further, as shown in FIG. 4, two holding brackets 243 are attached to the frame 210 at both ends in the y direction. The holding bracket 243 is a component obtained by bending a metal plate such as spring steel, for example, and fulfills a function of holding the LED lighting apparatus 101 on the ceiling 810 by being pressed against the ceiling 810.

  The reflector 211 has a shape in which a cross-sectional dimension (a diameter in the present embodiment) increases toward the emission direction in the z direction, and surrounds the LED light emitting unit 230 when viewed in the z direction. As an example of the dimensions of the reflector 211, the outer diameter is about 93 mm, the inner diameter is about 60 mm, and the height in the z direction is about 17 mm.

  The collar portion 212 is a ring-shaped portion extending in the xy direction from the lower end edge in the z direction of the reflector 211. When attaching the LED lighting fixture 101 to the ceiling 810, the collar portion 212 functions to fix the z-direction position of the LED lighting fixture 101 by contacting the lower surface of the ceiling 810 in the z direction. If an example of the dimension of the collar part 212 is given, an outer diameter will be about 110 mm.

  The engaging portion 213 is a part that defines the position of the heat dissipation member 220 with respect to the frame body 210, and engages with the heat dissipation member 220. In the present embodiment, the engaging portion 213 is a very shallow circular recess.

  The heat dissipating member 220 is a component that dissipates heat from the LED light emitting unit 230 to the outside. In the present embodiment, the heat dissipating member 220 includes an installation surface 221, a cone-shaped portion 222, and a plurality of convex portions 223. The heat dissipation member 220 is made of a metal such as aluminum. The position of the heat radiating member 220 with respect to the frame body 210 is defined by engaging with the engaging portion 213 of the frame body 210. In the present embodiment, bolts are used to ensure the fixing of the heat radiating member 220 to the frame body 210.

  The installation surface 221 is a circular plane that faces the z-direction emission direction, and is a surface on which the LED light emitting unit 230 is installed. An example of the dimension of the installation surface 221 is about 40 mm in diameter.

  The cone-shaped portion 222 surrounds the installation surface 221 when viewed in the z direction, and has a shape in which the cross-sectional dimension (in this embodiment, the diameter) increases toward the z-direction emission direction. As an example of the dimensions of the cone-shaped portion 222, the outer diameter is about 56 mm, the inner diameter is about 40 mm, and the height in the z direction is about 8 mm.

  The plurality of convex portions 223 protrudes upward in the z direction from the upper side in the z direction (the side opposite to the emission direction) which is the back side of the installation surface 221. In the present embodiment, the plurality of convex portions 223 are configured as a plurality of fins arranged in parallel to each other. The convex portion referred to in the present invention is not limited to the fin, and may be, for example, a prismatic shape or a cylindrical shape. As an example of the dimensions of the convex portion 223, the height in the z direction is about 5 mm, and the width in the y direction is about 4 mm.

  In the present embodiment, a translucent cover 241 is provided between the frame body 210 and the heat dissipation member 220. The translucent cover 241 is a circular plate made of a transparent material such as glass or acrylic resin. The translucent cover 241 functions to transmit light from the LED light emitting unit 230 and protect the LED light emitting unit 230. In the present embodiment, a spacer 242 is provided between the translucent cover 241 and the frame body 210. The spacer 242 has a ring shape, and allows the translucent cover 241 to be more securely sandwiched between the frame body 210 and the heat dissipation member 220.

  The LED light emitting unit 230 is a component that emits light when DC power is supplied, for example, and is installed on the installation surface 221 of the heat dissipation member 220 in the present embodiment.

  5 and 6 show an example of the LED light emitting unit 230. FIG. 5 is a plan view showing the LED light emitting unit 230, and FIG. 6 is an enlarged cross-sectional view of a main part in the yz plane along the line VI-VI in FIG. The LED light emitting unit 230 of this example includes an LED substrate 231 and a plurality of LED modules 232. LED substrate 231 has a base material made of, for example, ceramics or glass epoxy resin, and a wiring pattern formed on the base material.

  The plurality of LED modules 232 are mounted on the wiring pattern of the LED substrate 231 via, for example, solder. Each LED module 232 includes an LED chip 233, leads 234, a case 235, and a sealing resin 236. The LED chip 233 is made of, for example, a GaN-based semiconductor and emits blue light, for example. The lead 234 is made of a metal such as Cu, for example, and the LED chip 233 is mounted on a part thereof. Further, the LED chip 233 is electrically connected to the lead 234 through a wire. The case 235 is made of, for example, a white resin, covers a part of the lead 234, and surrounds the LED chip 233. The sealing resin 236 covers the LED chip 233 and is made of a material in which a fluorescent material is mixed in a transparent resin such as an epoxy resin or a silicone resin. This fluorescent material emits yellow light when excited by blue light from the LED chip 233, for example. Thereby, the LED module 232 emits white light.

  7 and 8 show another example of the LED light emitting unit 230. FIG. 7 is a plan view showing the LED light emitting unit 230, and FIG. 8 is an enlarged cross-sectional view of the main part in the zx plane along the line VIII-VIII in FIG. The LED light emitting unit 230 of this example includes an LED substrate 231, a plurality of LED chips 233, a sealing resin 236, and a dam portion 237. The LED substrate 231 has the same configuration as described with reference to FIGS. 5 and 6. In this example, a plurality of LED chips 233 are directly mounted on the LED substrate 231 and are arranged in a matrix, for example. The dam portion 237 is made of, for example, white silicone resin, and has a rectangular frame shape surrounding the plurality of LED chips 233 when viewed in the z direction. The sealing resin 236 fills a region surrounded by the dam portion 237 and covers the plurality of LED chips 233. The sealing resin 236 has the same configuration as described with reference to FIGS. 5 and 6. The LED light emitting unit 230 having such a configuration emits white light.

  The power supply unit 300 receives, for example, commercial AC 100V power and outputs DC power suitable for lighting the LED light source unit 200. As shown in FIGS. 1 to 3, the power supply unit 300 includes a case 310, a power supply board 320, a plurality of power supply components 330, and connection terminals 340. The power supply unit 300 is disposed away from the LED light source unit 200 in the x direction. As an example of the dimensions of the power supply unit 300, the x-direction dimension is about 55 mm, the y-direction dimension is about 70 mm, and the z-direction dimension is about 30 mm.

  The case 310 accommodates the power supply substrate 320, the plurality of power supply components 330, and the connection terminals 340, and has a substantially rectangular parallelepiped shape as a whole in the present embodiment. Case 310 is formed, for example, by bending a metal plate. The case 310 is formed with an inclined surface 311. The inclined surface 311 is a portion of the case 310 that is opposite to the LED light source unit 200 in the x direction, and is provided on the upper portion in the z direction (the portion opposite to the emission direction). As shown in FIG. 3, the inclined surface 311 is inclined so as to be separated from the LED light source unit 200 in the x direction toward the emission direction side in the z direction. It has become.

  The power supply substrate 320 is installed near the bottom of the case 310, and a plurality of power supply components 330 are mounted thereon. In the present embodiment, a plurality of spacers 321 are provided between the bottom of the case 310 and the power supply substrate 320. The spacer 321 is for securing a distance between the power supply substrate 320 and the case 310. As a result of such a configuration, the power supply substrate 320 is provided at a position where the ceiling 810 is separated by a predetermined distance or more.

  The plurality of power supply components 330 perform an AC / DC conversion function of converting commercial AC 100V power into DC power suitable for lighting the LED light source unit 200, for example, coils, capacitors, resistors, etc. Such as a vessel. Further, when the power supply unit 300 dimmes the plurality of LED chips 233 of the LED light source unit 200 by a control method such as PWM control, the plurality of power supply components 330 include driver ICs and the like. In the present embodiment, as shown in FIG. 3, a power supply component 330 having a relatively high z-direction height, such as a coil or a capacitor, is disposed in the left region in the x direction that is separated from the inclined surface 311.

  The connection terminal 340 is a component to which a power cable 830 disposed, for example, in a space above the ceiling 810 is connected outside the LED lighting apparatus 101. The connection terminal 340 is accommodated in the right end space of the case 310 in the figure, and can be connected by inserting, for example, a connector (not shown) of the power cable 830 from the right side of the figure.

  The LED light source unit 200 and the power source unit 300 are connected by a relay cable 510. The relay cable 510 transmits DC power from the power supply unit 300 to the LED light emitting unit 230 of the LED light source unit 200.

  The connecting member 400 connects the LED light source unit 200 and the power supply unit 300. In the present embodiment, the connecting member 400 is made of a metal plate that is an example of an elastic material, and in particular, spring steel or stainless steel is employed. The connecting member 400 has a light source side connection portion 410, a power source side connection portion 420, and a bent portion 430.

  The light source side connection portion 410 is a portion near the left end in the x direction in the figure connected to the LED light source portion 200 in the connecting member 400. In the present embodiment, the light source side connection part 410 is connected to the frame 210 of the LED light source part 200 by bolts. Further, the light source side connection portion 410 is connected to a portion corresponding to the upper end in the z direction of the frame body 210 and is located above the frame body 210 in the z direction. Further, the light source side connection portion 410 is located below the z direction from most portions of the heat dissipation member 220. In particular, the plurality of convex portions 223, the installation surface 221, and the LED light emitting unit 230 are located above the light source side connecting portion 410 in the z direction.

  The power supply side connection portion 420 is a portion near the right end in the x direction in the drawing connected to the power supply portion 300 in the connecting member 400. In the present embodiment, the power supply side connection part 420 is connected to the case 310 by bolts. In particular, in this embodiment, the power supply side connection portion 420 is connected to the upper end surface of the case 310 in the z direction, and most of the power supply portion 300 is below the power supply side connection portion 420 in the z direction.

  The bent portion 430 is formed by bending the two portions separated in the longitudinal direction of the connecting member 400. By providing the bent portion 430, the light source side connection portion 410 and the power source side connection portion 420 are located at different positions by the distance H in the z direction, and the light source side connection portion 410 is z more than the power source side connection portion 420. It is located in the lower direction (outgoing direction side in the z direction). This state is referred to as a bent state in the present invention. The connecting member 400 of the present embodiment is bent so as to have the bent portion 430 in a state where no external force is applied, and is always in the bent state.

  9 and 10 show an example of the connecting member 400. FIG. FIG. 9 is a plan view showing the connecting member 400, and FIG. 10 is a cross-sectional view in the yz plane along the line XX in FIG. A plurality of cable holding portions 440 are formed on the connecting member 400. The cable holding portion 440 has a U-shaped cut formed in a part of the connecting member 400, and a portion surrounded by the cut is raised in an L shape. The cable holding portion 440 holds a part of the relay cable 510 so as to sandwich it. In addition, a plurality of openings 441 are formed in the connecting member 400 by providing the cable holding portion 440. A portion where the opening 441 is formed in the connecting member 400 is more likely to cause stress concentration than portions other than this portion, and can be bent relatively easily. For this reason, the structure where the opening 441 is located in the vicinity of the part which performs the bending process for forming the bending part 430 is preferable.

    FIG. 11 and FIG. 12 show another example of the connecting member 400. 11 is a plan view showing the connecting member 400, and FIG. 12 is an enlarged cross-sectional view of a main part in the zx plane along the line XII-XII in FIG. In this example, two groove portions 450 are formed in the connecting member 400. The two groove portions 450 are spaced apart in the x direction. Each groove 450 crosses the connecting member 400 in the y direction. The cross-sectional shape of the groove 450 is, for example, a triangular shape, but is not limited thereto. By providing the two groove portions 450, the connecting member 400 can be more easily bent, and the bent portion 430 can be appropriately formed.

  As an example of the dimensions of the connecting member 400, the dimension in the x direction is about 80 mm, the dimension in the y direction is about 15 mm, the thickness is about 0.5 mm, and the distance H is about 15 mm.

  Next, the process of attaching the LED lighting apparatus 101 to the ceiling 810 will be described below with reference to FIGS.

  First, as shown in FIG. 13, the LED lighting apparatus 101 is disposed in the vicinity of a position directly below the ceiling 810. Then, the end of the power cable 830 is pulled out from the opening 811 provided in the ceiling 810. The opening 811 is circular and has a diameter of, for example, about 100 mm. Then, a connector (not shown) of the power cable 830 is connected to the connection terminal 340 of the power supply unit 300. In addition, when attaching the some LED lighting fixture 101 to the ceiling 810, the power cable 830 is made into the wiring form which can connect the some LED lighting fixture 101 in parallel, The diameter is comparatively thick and strong. Moreover, the part to which the code | symbol of the ceiling 810 was attached | subjected corresponds to what is called an exterior board and a lower-layer structure material depending on the case. In addition, a middle layer structural member 820 is disposed above the ceiling 810 with a predetermined distance therebetween. The middle layer structural member 820 holds the ceiling 810 via a rod (not shown) or the like.

  Next, as shown in FIG. 14, the power supply unit 300 is inserted into the opening 811 of the ceiling 810 from the right end portion in the drawing. At this time, the power cable 830 once drawn from the opening 811 is pushed into the space above the ceiling 810 by the power supply unit 300. In this operation, the LED lighting apparatus 101 is tilted so that the power supply unit 300 is positioned obliquely upward to the right and the LED light source unit 200 is positioned obliquely downward to the left. In FIGS. 13 to 15, arrow symbols indicating the x direction and the z direction are described for convenience according to the inclination of the LED lighting apparatus 101.

  Next, the LED lighting apparatus 101 is further inserted into the space above the ceiling 810. Then, as shown in FIG. 15, the inclined surface 311 of the case 310 of the power supply unit 300 is in a state of being close to the intermediate layer structural member 820. At this time, the LED light source unit 200 has not yet almost entered the opening 811 of the ceiling 810, and the connecting member 400 in the bent state is provided between the LED light source unit 200 and the power source unit 300 by providing the bent portion 430. Appropriately consolidated. Then, the LED lighting device 101 is rotated in the direction of the arrow in the drawing so that the left end of the LED light source unit 200 is lifted. As a result, most of the LED light source unit 200 enters the opening 811 and enters the state shown in FIGS. 3 and 4. The flange 212 of the LED light source unit 200 has an outer diameter larger than the diameter of the opening 811. For this reason, the position with respect to the ceiling of the LED light source part 200 is prescribed | regulated by the collar part 212 contacting the ceiling 810. FIG. Further, the two holding brackets 243 are sandwiched between the frame body 210 and the ceiling 810. Thereby, the holding bracket 243 is compressed, and the elastic force generated thereby becomes a holding force for holding the LED light source unit 200 on the ceiling 810. Through the above steps, the attachment of the LED lighting apparatus 101 to the ceiling 810 is completed.

  Next, the operation of the LED lighting apparatus 101 will be described.

  According to the present embodiment, as shown in FIG. 15, when the LED lighting apparatus 101 is attached to the ceiling 810, the LED light source unit 200 can be positioned on the z-direction emission direction side with respect to the power supply unit 300. Thereby, the power supply unit 300 is inserted into the space above the ceiling 810, and the LED lighting device 101 does not need to be inclined so much with respect to the ceiling 810 in a state where most of the LED light source units 200 are located below the ceiling 810. For this reason, it is possible to avoid that the power supply part 300 interferes with the intermediate | middle layer structural material 820, and the LED lighting fixture 101 can be installed in a smaller space.

  By forming the connecting member 400 from a metal plate, the shape of the bent portion 430 can be finished more accurately. Further, when the power cable 830 that is relatively strong is pushed into the space above the ceiling 810, the connecting member 400 can be prevented from being buckled unduly.

  By providing the cable holding portion 440 in the connecting member 400, the relay cable 510 can be appropriately held. In addition, the opening 441 formed by providing the cable holding portion 440 is advantageous for forming the bent portion 430 in the connecting member 400.

  By disposing the power supply unit 300 below the power supply side connection unit 420 of the connecting member 400 in the z direction, the angle at which the LED lighting apparatus 101 is inclined with respect to the ceiling 810 can be reduced, and interference can be avoided. Suitable for

  Providing the inclined surface 311 in the power supply unit 300 is suitable for avoiding interference between the power supply unit 300 and the intermediate layer structural member 820.

  By disposing the plurality of convex portions 223 of the heat dissipation member 220 above the light source side connection portion 410 of the connecting member 400 in the z direction, the power source unit 300 is unreasonably positioned above the LED light source unit 200 in the z direction. Can be suppressed. Further, the plurality of convex portions 223 contributes to promotion of heat radiation from the LED light emitting unit 230.

  By positioning the frame body 210 below the light source side connection portion 410 of the connecting member 400 in the z direction, the lower end of the frame body 210 is positioned below the ceiling 810 in the z direction when the LED lighting apparatus 101 is attached to the ceiling 810. It can be exposed properly.

  16 to 21 show another embodiment of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment.

  16 and 17 show an LED lighting apparatus according to the second embodiment of the present invention. The LED lighting fixture 102 of this embodiment differs in the structure of the connection member 400 from the LED lighting fixture 101 mentioned above. FIG. 16 shows a state where the LED lighting apparatus 102 is not yet attached to the ceiling 810 and no external force is applied. In this case, the connecting member 400 extends linearly in the x direction and does not have the bent portion 430. This state is called a linear state in the present invention. Further, the connecting member 400 is appropriately provided with the plurality of openings 441 and the grooves 450 described above. Alternatively, a so-called fold is given to a predetermined position of the connecting member 400 by performing a plurality of bending processes in advance. With these configurations, when an external force is applied to the connecting member 400, the above-described bent portion 430 appears and takes a bent state.

  When the LED lighting apparatus 102 is attached to the ceiling 810, the steps shown in FIGS. In these steps, the connecting member 400 is in a bent state by applying an external force to the LED lighting apparatus 102. For this reason, the attachment of the LED lighting fixture 102 to the ceiling 810 avoids interference with the middle layer structural member 820 as in the case of the LED lighting fixture 101.

  FIG. 17 shows a state where the LED lighting apparatus 102 has been attached to the ceiling 810. In the present embodiment, the z-direction thickness of the ceiling 810 is thicker than that shown in FIG. For this reason, the power source unit 300 is pushed upward in the z direction with respect to the LED light source unit 200. That is, the distance H is larger than the distance H in FIG. 3 and FIGS. This state is called a strongly bent state in the present invention.

  18 and 19 show an LED lighting apparatus according to a third embodiment of the present invention. The LED lighting fixture 103 of this embodiment differs in the structure of the connection member 400 from the LED lighting fixture 101 mentioned above. FIG. 18 shows a state where the LED lighting apparatus 103 is not yet attached to the ceiling 810 and no external force is applied. In this case, similarly to the case of the LED lighting apparatus 102, the connecting member 400 extends linearly in the x direction, does not have the bent portion 430, and takes a linear state. Further, the connecting member 400 is appropriately provided with the plurality of openings 441 and the grooves 450 described above. Alternatively, a so-called fold is given to a predetermined position of the connecting member 400 by performing a plurality of bending processes in advance. With these configurations, when an external force is applied to the connecting member 400, the above-described bent portion 430 appears and takes a bent state. Moreover, in the LED lighting fixture 103, the z direction height of the power supply part 300 is smaller than the power supply part 300 of LED lighting fixture 101,102.

  FIG. 19 shows a state where the attachment of the LED lighting apparatus 103 to the ceiling 810 is completed. In the present embodiment, since the height in the z direction of the power supply unit 300 is relatively low, the power supply unit 300 is positioned further downward in the z direction with respect to the LED light source unit 200 as compared with the configuration illustrated in FIGS. ing. That is, the distance H is smaller than the distance H in FIG. 3 and FIGS. This state is called a weakly bent state in the present invention.

  Also according to these embodiments, the LED lighting fixtures 102 and 103 can be installed in a smaller space. Since the connecting member 400 is made of an elastically deformable material typified by a metal plate such as spring steel or stainless steel, when the LED lighting fixtures 102 and 103 are attached to the ceiling 810, the connecting member 400 can be easily bent. It can be surely taken.

  In addition, when the LED lighting fixtures 102 and 103 are attached to the ceiling 810, the connecting member 400 has the above-described strong bending state or weak bending state depending on the thickness of the ceiling 810, the height in the z direction of the power supply unit 300, or the like. Can be taken. Thereby, the power supply part 300 can be installed more stably. In addition to the configurations of the LED lighting fixtures 102 and 103, the LED lighting fixtures 102 and 103 are in a linear state in a state where no external force is applied, and in a configuration in which the bending state referred to in the present invention is taken after the mounting process to the ceiling 810 or after the mounting is completed. Also good.

  FIG. 20 shows an LED lighting apparatus according to the fourth embodiment of the present invention. In the LED lighting apparatus 104 of the present embodiment, the connection terminal 340 protrudes from the case 310 of the power supply unit 300. Also according to these embodiments, the LED lighting apparatus 104 can be installed in a smaller space as compared with a configuration without the bent portion 430.

  FIG. 21 shows an LED lighting apparatus according to the fifth embodiment of the present invention. In the LED lighting apparatus 105 of this embodiment, the convex part 223 is not provided in the heat radiating member 220 of the LED light source part 200. Also according to these embodiments, the LED lighting apparatus 105 can be installed in a smaller space.

  The LED lighting apparatus according to the present invention is not limited to the embodiment described above. The specific configuration of each part of the LED lighting apparatus according to the present invention can be varied in design in various ways.

101-105 LED lighting fixture 210 Frame 211 Reflector 212 Gutter part 213 Engagement part 220 Heat radiation member 221 Installation surface 222 Cone-shaped part 223 Convex part 230 LED light emitting part 231 LED substrate 232 LED module 233 LED chip 234 Lead 235 Case 236 Sealing Resin 237 Dam 241 Translucent cover 242 Spacer 243 Holding bracket 300 Power supply 310 Case 311 Inclined surface 320 Power supply substrate 321 Spacer 330 Power supply component 340 Connection terminal 400 Connection member 410 Light source side connection 420 Power supply side connection 430 Bending 440 Cable holding part 441 Opening 450 Groove part 510 Relay cable 810 Ceiling 811 Opening 820 Middle layer structural material 830 Power cable

Claims (22)

An LED light source unit that has an LED chip and emits light in the first direction;
A power supply unit that supplies power for lighting the LED chip and is spaced apart in a second direction perpendicular to the first direction with respect to the LED light source unit;
The light source side connecting portion connected to the LED light source portion and the power source side connecting portion connected to the power source portion, and the power source side connecting portion is opposite to the light source side connecting portion in the emission direction in the first direction. A connecting member capable of taking a bent state having a bent portion positioned on the side;
An LED lighting apparatus comprising:   The LED lighting apparatus according to claim 1, wherein the connecting member always takes the bent state.   The LED lighting apparatus according to claim 1, wherein the connecting member is made of an elastically deformable material.   The LED lighting apparatus according to claim 3, wherein the connecting member is made of a metal plate.   5. The LED lighting apparatus according to claim 3, wherein the connecting member takes a straight state without the bent portion when an external force is not applied, and takes the bent state when the external force is applied.   When the LED light source unit is attached to an opening provided in the ceiling and the power source unit is arranged inside the ceiling, the connecting member is connected to the power source side connecting unit in the first direction rather than the bent state. The LED lighting apparatus according to claim 5, wherein the LED lighting apparatus is in a strongly bent state in which a distance from the light source side connection portion is large.   When the LED light source unit is attached to an opening provided in the ceiling and the power source unit is arranged inside the ceiling, the connecting member is connected to the power source side connecting unit in the first direction rather than the bent state. The LED lighting apparatus according to claim 5, wherein the LED lighting apparatus is in a weakly bent state in which a distance from the light source side connection portion is small.   8. The LED lighting apparatus according to claim 1, wherein the connecting member has a cable holding part for holding a relay cable that connects the LED light source part and the power supply part. 9.   The LED lighting apparatus according to claim 1, wherein the connecting member has a groove portion that is perpendicular to the second direction.   The LED lighting apparatus according to any one of claims 1 to 9, wherein the power supply unit has a portion located on the emission direction side in the first direction with respect to the power supply side connection unit.   11. The LED lighting apparatus according to claim 10, wherein all of the power supply units are located closer to the emission direction side in the first direction than the power supply side connection unit.   The LED lighting apparatus according to claim 10 or 11, wherein the power supply side connection portion is connected to a portion of the power supply portion near the LED light source portion in the second direction.   The power source unit is located on a side opposite to the LED light source unit in the second direction and opposite to the emission direction in the first direction, and toward the emission direction in the first direction. The LED lighting apparatus according to claim 1, wherein an inclined surface inclined so as to be separated from the portion is formed.   14. The LED lighting apparatus according to claim 1, wherein the power supply unit has a connection terminal to which a power supply power supply cable is connected from the side opposite to the LED light source unit in the second direction.   The LED light source unit according to any one of claims 1 to 14, further comprising a reflector that surrounds the LED chip in the first direction view and has a cross-sectional dimension that increases in the first direction toward the emission direction. LED lighting fixtures.   The LED lighting apparatus according to claim 15, wherein the reflector is made of a resin.   17. The LED illumination according to claim 15, wherein the LED light source unit has a heat radiating member that is located on a side opposite to the emitting direction in the first direction with respect to the reflector and that radiates heat from the LED chip. Instruments.   18. The LED lighting apparatus according to claim 17, wherein the heat dissipation member is made of metal.   The LED lighting fixture according to claim 17 or 18, wherein the LED chip is mounted on the heat dissipation member via an LED substrate.   20. The LED lighting apparatus according to claim 15, wherein the reflector has a portion located on an emission direction side in the first direction with respect to the light source side connection portion of the coupling member.   19. The LED lighting apparatus according to claim 17, wherein the heat dissipating member has a portion located on a side opposite to the light emitting direction in the first direction with respect to the light source side connecting portion of the connecting member.   The LED heat fixture according to claim 21, wherein the heat dissipation member has a plurality of protrusions protruding to the opposite side to the emission direction in the first direction.

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