JP2016197499A - LED lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting device having a structure in which noise generated by an electronic component is less likely to be transmitted to a wiring cable.SOLUTION: An LED lighting device includes: a floodlight which houses LEDs as a light source; a power supply case which houses a power circuit 19 for controlling lighting of the LEDs in an elongated case; and a wiring cable 103 electrically connecting the power circuit 19 with the floodlight. The case includes a metal cylindrical part (11) including an interior part divided into at least two parts by a metal plate 65 extending in a longitudinal direction. The power circuit 19 is disposed in one 66 of the spaces in the metal cylindrical part (11). The wiring cable 103 is disposed in the other space 64 in the metal cylindrical part (11).SELECTED DRAWING: Figure 3

Description

  The present invention relates to an LED illumination device using LEDs as a light source, and more particularly to an LED illumination device used by being attached to a wiring duct rail disposed on a ceiling surface.

As an LED lighting device that is used by being attached to a wiring duct rail, for example, there is a spotlight that effectively illuminates exhibits, exhibition products, and the like in a commercial facility or store by highlighting these shadows (for example, Patent Document 1). .
The lighting fixture disclosed in Patent Document 1 includes a power supply case provided with a power supply circuit in a rectangular parallelepiped case long in the extending direction of the wiring duct rail, an illumination lamp including a light source unit, and one end side in the longitudinal direction of the power supply case. And an arm for attaching an illuminating lamp. The power circuit is composed of a circuit board and a plurality of electronic components. The circuit board has a rectangular shape that matches the shape of the case.

JP 2012-14980 A

In the lighting fixture of the said structure, the wiring cable which connects a power supply circuit and an illumination lamp is accommodated in the case. For this reason, the problem that the noise which generate | occur | produced from the electronic component will be conducted to a wiring cable arose.
The problem to be solved by the present invention is to provide an LED lighting device having a structure in which noise generated from an electronic component is not easily transmitted to a wiring cable connecting a power circuit and an illumination lamp.

  In order to solve the above problems, an LED lighting device according to the present invention is an illumination lamp that houses an LED as a light source, a power supply case that houses a power supply circuit that controls lighting of the LED in an elongated case, and the power supply circuit And a wiring cable that electrically connects the illuminating lamp, and the case has a metal cylinder part at least divided into two by a metal plate extending in a longitudinal direction, and one of the insides of the metal cylinder part The power supply circuit is disposed in the space, and the wiring cable is disposed in the other space inside the metal cylinder portion.

  According to the present invention, the power supply circuit and the wiring cable are accommodated in separate spaces. For this reason, it can suppress that the noise which generate | occur | produced from the electronic component is shielded with a metal plate, and gets on a wiring cable.

It is a perspective view of the LED lighting apparatus which concerns on embodiment. It is a perspective view which partially decomposes and shows the LED lighting apparatus which concerns on embodiment. It is the figure which looked at the state which removed the 2nd lid of the power supply case concerning an embodiment from back. It is a perspective view of the power circuit concerning an embodiment. It is a disassembled perspective view of the illuminating lamp which concerns on embodiment. It is the figure which looked at the state which removed the 2nd lid of the power supply case concerning a modification from the back. It is a figure which shows the metal plate which concerns on a modification.

An LED illumination device according to an aspect of the present invention includes an illumination lamp that houses an LED as a light source, a power supply case that houses a power supply circuit that controls lighting of the LED in an elongated case, the power supply circuit, and the illumination lamp. And the case has a metal cylinder part at least divided into two parts by a metal plate extending in the longitudinal direction, and the case is provided in one space inside the metal cylinder part. A power supply circuit is arranged, and the wiring cable is arranged in the other space inside the metal cylinder portion.
In the LED lighting device according to another aspect, the illuminating lamp is attached to one end side in the longitudinal direction of the power supply case, and the power supply circuit has a plurality of electronic components mounted on a circuit board long in the longitudinal direction, The other end portion in the longitudinal direction of the power supply case on the circuit board is connected to the wiring cable. Thereby, the power circuit can be reduced in size.
In the LED lighting device according to another aspect, the metal cylinder portion is constituted by a metal cylinder, and the metal plate is separate from the metal cylinder. Thereby, the structure of a metal cylinder part can be simplified.
In the LED lighting device according to another aspect, the circuit board is fixed to the metal plate via an insulating thin plate. Thereby, the insulation of a power supply board and a metal plate is securable.

<Embodiment>
1. Overall Configuration FIG. 1 is a perspective view of an LED lighting apparatus according to an embodiment as viewed from an illuminating lamp side.
The illuminating device 1 has a power supply case 3 attached to a wiring duct rail (not shown) and an illuminating lamp 5 having an LED 71 as a light source. The illuminating device 1 of this embodiment also has an arm 7 for attaching the illuminating lamp 5 to the power supply case 3.
Here, let the longitudinal direction of the power supply case 3 be the front-back direction, and let the side where the illumination lamp 5 exists be the front side. The front-rear direction matches the extending direction of the wiring duct rail (not shown). Further, a direction parallel to the installation surface of the wiring duct rail and orthogonal to the front-rear direction is defined as the left-right direction, and the left-right direction is based on a state where the illumination lamp 5 is viewed from the rear side in the front-rear direction. The front-rear direction and the direction orthogonal to the left-right direction are the up-down direction, and the installation surface side is the upper side. The vertical direction is a direction orthogonal to the installation surface, and the horizontal direction is also a direction orthogonal to the vertical direction and the front-rear direction.

2. Power Supply Case The power supply case 3 includes a metal cylinder 11 that is long in the front-rear direction, a first lid 13 that closes the front end (one end) of the metal cylinder 11, and a second that closes the rear end (other end) of the metal cylinder 11. And a lid 15. A case 17 is configured by the metal cylinder 11 and the first and second lid bodies 13 and 15. A power circuit 19 described later is accommodated in the case 17.

(1) Metal cylinder A description will be given mainly with reference to FIGS. 1 and 2.
The cross-sectional shape of the metal cylinder 11 is a square shape close to a square shape. The metal cylinder 11 has a bottom wall 21, a right wall 23, a left wall 25, and a top wall 27.
A support plug 31 is provided on the top wall 27. The support plug 31 is an example of attachment means for attaching the case 17 to the wiring duct rail. The support plug 31 is attached to the case 17 so as to be movable in the front-rear direction with respect to the wiring duct rail and to be rotatable around a rotation axis orthogonal to the installation surface.

For example, an extruded product made of metal (for example, aluminum) is used for the metal cylinder 11. The first and second lids 13 and 15 are attached to the corners of the bottom wall 21 of the metal cylinder 11 which are located at the left and right corners and the corners of the top wall 27 near the left and right corners. Mounting means are provided.
Specifically, the corner portions located between the bottom wall 21 and the left and right walls 23, 25 in the metal cylinder 11 are thick portions 33, 35. The portions near the top wall 27 of the left and right walls 23 and 25 in the metal cylinder 11 are thick portions 37 and 39. Screw holes 40 are provided in the thick portions 33, 35, 37, and 39. The thick portions 33, 35, 37, 39 and the screw hole 40 correspond to an example of the mounting means.
The inside of the metal cylinder 11 is divided into two by a metal plate 65 extending in the longitudinal direction. That is, the inside of the metal cylinder 11 has two spaces 64 and 66 in the longitudinal direction. The metal cylinder 11 corresponds to an example of a metal cylinder part of the present invention.

(2) 1st cover body It demonstrates using FIG.1 and FIG.2 mainly.
The first lid 13 has a function of closing the front end opening of the metal cylinder 11. The first lid 13 may have, for example, a function of attaching the illuminating lamp 5 (arm 7) to the power supply case 3 and a function of receiving power from a commercial power source.
The first lid 13 has a box-shaped support body 41 whose one surface (rear surface) is open. A power plug 43 is provided on the top wall of the support body 41. The power plug 43 contacts the electrode bar of the wiring duct rail and receives commercial power. The power plug 43 is connected to the power circuit 19 inside the support body 41 by a wiring cable (not shown).

The support body 41 has a through hole for receiving the upper portion of the arm 7 in the bottom wall. The cross-sectional shape of the upper part of the arm 7 is circular, and the through hole is also circular. As a result, the arm 7 can rotate about an axis extending in the vertical direction. For example, the arm 7 is rotatably supported by the support body 41 by fitting a snap ring into a circumferential groove formed in the upper portion of the arm 7 in the support body 41.
The support body 41 has an outer flange portion 45 projecting from the rear ends of the left and right walls to the left and right sides. The outer flange portion 45 has a through hole at a position corresponding to the screw hole 40 of the metal cylinder 11. The support body 41 (first lid body 13) is attached to the metal cylinder 11 by a screw body 47 that is inserted through the through hole of the outer flange portion 45.

(3) 2nd cover body It demonstrates using FIG.1 and FIG.2 mainly.
The second lid 15 has a function of closing the rear end opening of the metal cylinder 11. The second lid 15 may have a function of operating the brightness adjustment of the illumination lamp 5.
The second lid 15 has a lid body 51 having an inclined end wall 53. The lid body 51 has a top wall 52, an end wall 53, a right wall 54 and a left wall 55. The lid body 51 has through holes 57 at four corners when viewed from the rear. The through hole 57 is provided corresponding to the screw hole 40 of the metal cylinder 11. The lid body 51 (second lid body 15) is attached to the metal cylinder 11 by a screw body (not shown) that passes through the through hole 57.
The end wall 53 is provided with a rotation (volume) type adjustment tool 59. The adjuster 59 is an example of an operation means for adjusting brightness. The brightness of the illuminating lamp 5 is adjusted by rotating the adjusting tool 59. The adjusting tool 59 is connected to the power supply circuit 19 via the wiring cable 111 on the back side of the end wall 53.

(4) Power supply circuit Description will be made mainly with reference to FIGS.
The power supply circuit 19 includes a circuit board 61 and a plurality of electronic components 63. Needless to say, the electronic component 63 is mounted on the circuit board 61. The power supply circuit 19 has a circuit for lighting the illumination lamp 5. The power supply circuit 19 may have a circuit with another function. For example, the power supply circuit may include a circuit for dimming function or toning function.
Here, the power supply circuit 19 has a dimming function. Specifically, the power supply circuit 19 includes a rectifier circuit, a smoothing circuit, a voltage conversion circuit, and the like. The luminance of the illumination lamp 5 can be adjusted (dimmed) by voltage conversion. The wiring of the power supply circuit 19 will be described in detail later.

The circuit board 61 has a rectangular shape that is long in the longitudinal direction of the metal cylinder 11. The length of the circuit board 61 in the longitudinal direction is substantially equal to the length of the metal cylinder 11 in the longitudinal direction.
The power supply circuit 19 is disposed in the metal cylinder 11 with the circuit board 61 fixed to the metal plate 65. The power supply circuit 19 is arranged in the metal cylinder 11 in a state surrounded by an insulating thin plate 67. In the embodiment, the power supply circuit 19 is attached to the metal plate 65 in a state surrounded by the insulating thin plate 67 and disposed in the metal cylinder 11.
The metal plate 65 is preferably larger than the circuit board 61. In particular, the metal plate 65 is preferably longer than the length of the circuit board 61 in the longitudinal direction. This is because the noise shielding performance is improved.

The circuit board 61 is fixed to the metal plate 65 by a screw body 68, for example. The circuit board 61 is fixed to the metal plate 65 through an insulating ring 69. The fixing points of the screw body 68 are two corners located on one diagonal line of the circuit board 61.
The thin plate 67 may be disposed between the insulating ring 69 and the metal plate 65, or may be disposed between the insulating ring 69 and the circuit board 61. Considering the case where the lead wire of the electronic component 63 is soldered on the back surface of the circuit board 61, the thin plate 67 is preferably disposed between the insulating ring 69 and the metal plate 65.

3. Illumination lamp The description will be made mainly with reference to FIGS.
The illuminating lamp 5 includes a plurality of LEDs 71 that are light sources, a mounting board 73 on which the plurality of LEDs 71 are mounted, and a holding member that holds the mounting board 73. The illumination lamp 5 may include an optical member 75 that collects or diffuses the light emitted from the LED 71. Furthermore, the illuminating lamp 5 may include a heat sink 77 for releasing heat generated during light emission of the LED 71. Here, the heat sink 77 also functions as a holding member.
In addition to the above configuration, the illuminating lamp 5 may include a reflector 79 that reflects light that has passed through the optical member 75 forward, and a heat sheet 81 that efficiently conducts heat generated from the LED 71 to the heat sink 77. . The mounting board 73 is connected to the wiring cable 103 shown in FIG. 3, and the illuminating lamp 5 receives power from the power supply circuit 19.

4). The arm will be described mainly with reference to FIGS.
The arm 7 is attached to the power supply case 3 that is long in the front-rear direction. Specifically, the arm 7 is attached to the front end portion of the power supply case 3. To be precise, the arm 7 is attached to the first lid 13. The arm 7 is attached to the power supply case 3 so that the direction of the illumination lamp 5 can be adjusted. The orientation is adjusted by rotating around the axis extending in the left-right direction and rotating around the axis extending in the up-down direction.
The arm 7 includes two members, a power supply side arm 83 provided on the power supply case 3 side and an illumination side arm 85 provided on the illumination lamp 5 side. The illumination side arm 85 may be a component of the illumination lamp 5.

The power supply side arm 83 includes a cylindrical portion having a circular cross section, a rectangular tube portion 87 having a rectangular cross section, and an attachment portion 89. As described above, the cylindrical portion is supported inside the support body 41 so as to be rotatable about a vertical axis. An operating means 84 for operating (restricting) the rotation of the cylindrical portion is provided at the lower end of the cylindrical portion. In the rotation operation, when the operation button 86 is pressed, the engagement protrusion engaged with the recess formed in the bottom wall of the support body 41 is immersed, and the power supply side arm 83 can be rotated. A plurality of recesses are provided at intervals in the circumferential direction.
The illumination side arm 85 includes a fixing portion 91 fixed to the illumination lamp 5 and an attachment portion 93 attached to the attachment portion 89 of the power source side arm 83 so as to be rotatable around an axis extending in the left-right direction. Yes. The attachment portion 93 is fixed so as to be rotatable around the screw shaft by a screw body 95 inserted from the left-right direction.

5. Power Supply Circuit (1) Wiring in Power Supply Case Wiring will be described with reference to FIGS.
A wiring cable 101 connected to the commercial power supply side is connected to the front end of the rectangular circuit board 61 in the longitudinal direction. A wiring cable 103 connected to the illuminating lamp 5 is connected to the rear end of the circuit board 61 in the longitudinal direction. The connection is performed by attaching connectors 104 and 105 provided at ends of the wiring cables 101 and 103 to terminals 107 and 109 provided on the circuit board 61.
A terminal 115 is provided at the rear end of the circuit board 61 in the longitudinal direction. A connector 115 of a wiring cable 111 connected to an adjustment tool 59 for adjusting luminance is attached to the terminal 115.

(2) Fixation As shown in FIGS. 3 and 4, the power supply circuit 19 is housed in the metal cylinder 11 in a state of being fixed to the metal plate 65.
The metal plate 65 has the same shape as the circuit board 61 and is larger than the circuit board 61. The dimension in the short direction of the metal plate 65 is equal to the distance between the right wall 23 and the left wall 25 of the metal cylinder 11. The metal plate 65 is inserted into grooves 121 and 123 formed in the right wall 23 and the left wall 25 of the metal cylinder 11.
The groove 121 is formed between the convex part 125 of the right wall 23 and the thick part 33 at the corner. The groove 123 is formed between the convex portion 127 of the left wall 25 and the thick portion 35 at the corner. The grooves 121 and 123 correspond to the thickness of the metal plate 65. Thereby, it is possible to prevent the power supply circuit 19 from moving in the vertical and horizontal directions inside the metal cylinder 11.
The length of the metal plate 65 corresponds to the distance between the first and second lids 13 and 15 that block both ends of the metal cylinder 11. Thereby, it is possible to prevent the power supply circuit 19 from moving in the front-rear direction inside the metal cylinder 11.

(3) Insulation As shown in FIGS. 3 and 4, the power supply circuit 19 is fixed to the metal plate 65 in a state surrounded by the insulating thin plate 67 and accommodated in the metal cylinder 11. Thereby, the insulation of the power supply circuit 19 is securable.
As shown in FIG. 3, the thin plate 67 has a cross-sectional shape having a right wall 67a, a bottom wall 67b, a left wall 67c, and a top wall 67d that is close to a square shape. Here, the quadrilateral is shaped so that there is no corner portion formed by connecting the top wall 67d and the right wall 67a.
The thin plate 67 is made of a resin material. The thin plate 67 is formed in a square tube shape by bending a single plate. Although the thin plate 67 can maintain its shape by itself, it tends to spread more than 90 [°] at the corners. For this reason, there is no possibility that the thin plate 67 approaches the electronic component 63 side, and the electronic component 63 is not damaged.

  The thin plate 67 is formed in a square tube shape by bending a single plate. For this reason, the left wall 67 c and the top wall 67 d of the thin plate 67 tend to spread on the side opposite to the power supply circuit 19. However, the thin plate 67 is bent so that the top wall 67d of the thin plate 67 having a square cylindrical shape comes into contact with the rib 129 of the top wall 27 of the metal cylinder 11. For this reason, it is possible to prevent the left wall 67c and the top wall 67d from spreading outward.

(4) Noise At the corner of the metal cylinder 11, there are thick portions 33 and 35 in which screw holes 40 are formed. For this reason, a space 64 is formed between the metal plate 65 and the bottom wall 21, and a space 66 is formed between the metal plate 65, the left and right walls 23, 25, and the top wall 27. Arranged. The wiring cable 103 that connects the power supply circuit 19 and the illumination lamp 5 is led out of the power supply case 3 through the space 64.
Thereby, noise generated in the power supply circuit 19 is shielded by the metal plate 65. Accordingly, it is possible to reduce the risk of noise on the wiring cable 103 arranged in the space 64.

<Modification>
The lighting device according to the embodiment has been described above. However, the present invention is not limited to this embodiment. For example, the following modification may be used. Further, the embodiment may be a combination of the modified example and the modified examples.
In addition, examples that are not described in the embodiments and modifications and design changes that do not depart from the gist are also included in the present invention.

1. Illumination Device (1) Overall The illumination device 1 may include a power supply case 3 and an illumination lamp 5. That is, the illuminating device may include the illuminating lamp 5 via the arm 7 or may include the illuminating lamp directly on the power supply case.

(2) Power supply case Although the power supply case 3 has the function of attaching the arm 7 to the first lid 13, it may be provided to a metal cylinder. The power supply case 3 has the power receiving means (power plug 43) in the first lid 13, but it may have a metal cylinder or a second lid.
Although the power supply case 3 has the support plug 31 on the top wall 27 of the metal cylinder 11, the power supply case 3 may have one of the left and right walls of the metal cylinder.
The power supply circuit 19 has a light control circuit (light control circuit), and the power supply case 3 has an adjustment tool 59 for adjusting light control. However, the power supply circuit does not have to have a dimmer circuit. In addition, the power supply circuit 19 does not include a circuit for color adjustment (color adjustment circuit), but may include a color adjustment circuit, and the power supply case may include an adjustment tool for adjusting the color adjustment. Further, the power supply circuit may include a dimming circuit and a toning circuit, and the power supply case may include these adjusting tools.

The case 17 has a structure having a metal cylinder 11 that is open at both ends in the longitudinal direction, and first and second lid bodies 13 and 15 that block the opening of the metal cylinder 11. That is, the metal cylinder part is constituted by the metal cylinder 11.
However, the metal cylinder part should just have the cylindrical structure which can accommodate separately a power supply circuit and a wiring cable inside, and is not limited to the structure of embodiment. For example, the metal cylinder portion may have a cylindrical structure having a long and narrow metal box body in which a portion corresponding to the top wall is opened, and a lid body that closes the opening of the metal box body. Moreover, the cylindrical structure formed by combining two metal cylinders may be sufficient as a metal cylinder part. In other words, the metal tube portion only needs to have a space in which the power supply circuit and the wiring cable can be separately accommodated, and the structure and shape are not particularly limited.

Moreover, the metal cylinder part may have three or more spaces inside. A power supply circuit is accommodated in one space, a wiring cable for connecting the power supply circuit and the illuminating lamp is accommodated in the other space, and a power supply circuit and a commercial power supply (power plug) are provided in the remaining one space. A wiring cable for connecting the terminals may be accommodated.
Further, one space of the metal cylinder portion may accommodate a wiring cable for connecting the power circuit and the commercial power source (power plug) in addition to the wiring cable for connecting the power circuit and the illuminating lamp.

(3) Metal cylinder The metal cylinder 11 includes the metal plate 65 as a separate body, but may include a metal plate integrally.
FIG. 6 is a rear view of the power supply case according to the modification with the second lid removed.
The metal cylinder 201 has a power circuit housing space 203 and a wiring cable placement space 205. A partition wall (corresponding to an example of the metal plate of the present invention) 207 exists between the power circuit housing space 203 and the wiring cable arrangement space 205. For example, an extruded product can be used as the metal cylinder 201.
The power supply circuit 19 is fixed to the metal cylinder 201 by inserting both ends in the short direction of the circuit board 211 into the groove 215 of the right wall 213 and the groove 219 of the left wall 217 of the metal cylinder 201.
The partition wall 207 is provided on the side (bottom wall side) opposite to the side on which the electronic component is mounted on the circuit board 211, but may be provided on the left wall, right wall, and top wall side, for example. .

(4) Lid The material of the first and second lids 13 and 15 of the embodiment may be metal or resin. When the lid has a function of holding the arm, it is preferably made of metal. Note that if the first and second lids are made of a metal material, noise leakage can be suppressed.

2. Metal plate The metal plate 65 has a rectangular shape, but may have a shape having a notch on the short side, for example. The notch can be used to introduce the wiring cable (103) to the back side of the metal plate.
FIG. 7 is a view showing a metal plate according to a modification.
The metal plate 251 has rectangular cutouts 253 on both sides in the longitudinal direction as shown in FIG. The notch 253 is provided at a portion corresponding to one diagonal corner of the metal plate 251.

The metal plate 261 has a semicircular cutout 263 on the short side as shown in FIG. The notch 263 is provided in the central part of the short side, but may be another part.
The metal plate 271 has triangular cutouts 273 on both sides in the longitudinal direction as shown in FIG. The notch 273 is provided at a portion corresponding to the corner on the same side of the metal plate 251 in the short direction.

DESCRIPTION OF SYMBOLS 1 Illuminating device 3 Power supply case 5 Illuminating lamp 7 Arm 11 Metal cylinder 19 Power supply circuit 61 Circuit board 63 Electronic component 64 Space 65 Metal plate 66 Space 67 Thin plate 103 Wiring cable

Claims (4)

An illumination lamp that houses an LED as a light source;
A power supply case that houses a power supply circuit that controls lighting of the LED in an elongated case;
A wiring cable for electrically connecting the power circuit and the illuminating lamp,
The case has a metal cylinder part whose inside is divided at least by a metal plate extending in the longitudinal direction,
The LED lighting device, wherein the power supply circuit is arranged in one space inside the metal cylinder part, and the wiring cable is arranged in the other space inside the metal cylinder part. The illumination lamp is attached to one end side in the longitudinal direction of the power supply case,
The power supply circuit has a plurality of electronic components mounted on a circuit board that is long in the longitudinal direction.
The LED lighting device according to claim 1, wherein the other end portion in the longitudinal direction of the power supply case in the circuit board is connected to the wiring cable. The metal cylinder part is composed of a metal cylinder,
The LED lighting device according to claim 2, wherein the metal plate is separate from the metal cylinder. The LED lighting device according to claim 3, wherein the circuit board is fixed to the metal plate via an insulating thin plate.

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