JP2018055837A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device capable of suppressing occurrence of noise with an inexpensive configuration.SOLUTION: The lighting device according to an embodiment comprises a light-emitting part, a body part, and a power source box. The light-emitting part includes a plurality of light-emitting elements. The body part has a rectangular parallelepiped shape in which the light-emitting part is provided on the front side. The power source box has a rectangular parallelepiped shape provided on the back side of the body part. Further, the power source box includes control boards, a through hole, and regulation members. The control boards are provided on the inner walls of the opposing side surfaces, and control the light-emitting elements. The through hole is provided in the central part of the back surface and passes through wirings respectively connected to the control boards. The regulation members detour the wirings passing through the through hole to the side surface sides where the control boards are not provided.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a lighting device.

  In recent years, lighting devices using a semiconductor element such as an LED (Light Emitting Diode) as a light source have become widespread. In such an illuminating device, noise may be generated from a control board that controls the semiconductor element.

JP 2013-84610 A

  The problem to be solved by the present invention is to provide an illumination device that can suppress the generation of noise with an inexpensive configuration.

  The lighting device according to the embodiment includes a light emitting unit, a main body unit, and a power supply box. The light emitting unit includes a plurality of light emitting elements. The main body has a rectangular parallelepiped shape in which the light emitting part is provided on the front side. The power supply box has a rectangular parallelepiped shape provided on the back side of the main body. The power supply box includes a control board, a through hole, and a regulating member. Control boards are respectively provided on the inner walls of the opposing side surfaces and control the light emitting elements. The through hole is provided in the central portion of the back surface, and allows the wires connected to the control board to pass therethrough. The restricting member bypasses the wiring that has passed through the through hole to the side surface side on which the control board is not provided.

FIG. 1 is a diagram illustrating an outline of an illumination device according to an embodiment. FIG. 2 is a block diagram illustrating a configuration of a control board according to the embodiment. FIG. 3 is a diagram illustrating a regulating member according to the embodiment. FIG. 4 is a diagram illustrating an arrangement of terminal blocks according to the embodiment. FIG. 5 is a diagram illustrating a modification of the restricting member according to the embodiment.

  The lighting device 1 according to the embodiment described below includes a light emitting unit 60, a main body unit 40, and a power supply box 20. The light emitting unit 60 includes a plurality of light emitting elements 61. The main body 40 has a rectangular parallelepiped shape in which the light emitting unit 60 is provided on the front side. The power supply box 20 has a rectangular parallelepiped shape provided on the back side of the main body 40. In addition, the power supply box 20 includes a control board 25, a through hole 28, and regulating members 21 and 22. The control board 25 is provided on the inner walls of the opposing side surfaces 20b and 20c, respectively, and controls the light emitting element 61. The through hole 28 is provided at the center of the back surface 20 a and allows the wirings 26 connected to the control board 25 to pass therethrough. The regulating members 21 and 22 bypass the wiring 26 that has passed through the through hole 28 to the side surface where the control board 25 is not provided.

  In addition, the regulating members 21 and 22 according to the embodiments described below are provided on the back side near the side surface in the direction from the through hole 28 toward the side surfaces 20d and 20e where the control board 25 is not provided. It is a fixing member fixed to the back surface 20a.

  In addition, the two sets of the control board 25 and the regulating members 21 and 22 according to the embodiment described below are arranged so as to be point-symmetric with respect to the through hole 28 when viewed from the back side.

  Hereinafter, a lighting device 1 according to an embodiment will be described with reference to the drawings. In the embodiment, the same parts are denoted by the same reference numerals, and redundant description is omitted. Moreover, in the following description, the case where the illuminating device 1 is what is called a hanging type downlight is demonstrated.

(Embodiment)
First, the outline | summary of the illuminating device 1 which concerns on embodiment is demonstrated using FIG. FIG. 1 is a perspective view showing an outline of the lighting device 1. In addition, FIG. 1 is the figure which looked at the illuminating device 1 from diagonally downward.

  Further, in FIG. 1, for easy understanding, three-dimensional orthogonal coordinates including the Z axis with the vertical direction upward as the positive direction are shown. Such an orthogonal coordinate system may be shown in other drawings used in the following description.

  As shown in FIG. 1, the lighting device 1 includes a support unit 10, a power supply box 20, a terminal block cover 30, a main body unit 40, a heat radiating unit 50, a light emitting unit 60, and a translucent cover 70. It has.

  The support part 10 suspends and supports the illuminating device 1 so as to be swingable by sandwiching opposing side surfaces of the main body part 40. Further, the support portion 10 has, for example, a semi-arc-shaped adjustment hole on the side surface side of the main body portion 40. For example, the mounting angle of the main body 40 can be adjusted by fixing the main body 40 to the main body 40 with a fastening member such as a bolt through the adjustment hole.

  Moreover, the support part 10 has an attachment hole in a top plate, and is fixed to a ceiling with fixing tools, such as a screw and a bolt, through this attachment hole. In addition, the shape of the support part 10 will not be ask | required if the illuminating device 1 can be fixed to a ceiling etc.

  The power supply box 20 accommodates a control board 25 (described later in FIG. 2) that controls the light emitting unit 60. The power supply box 20 is a rectangular parallelepiped housing disposed on the back side (Z-axis positive direction side) of the main body 40. Here, in the illuminating device 1 which concerns on embodiment, it has the structure which suppresses the noise which generate | occur | produces inside the power supply box 20. FIG. Details of this point will be described later with reference to FIG. 3 together with the internal structure of the power supply box 20.

  The terminal block cover 30 is a housing that is provided on the back surface of the power supply box 20 and incorporates the terminal block 31. The terminal block cover 30 has a wiring hole on the side surface, and the external wiring 35 is connected to the terminal block 31 from the outside through the wiring hole. For example, the terminal block cover 30 is attached by an enforcer after the lighting device 1 is attached. The terminal block cover 30 may be omitted.

  The terminal block 31 includes a power supply terminal block 31a to which the power supply line 35a of the external wiring 35 is connected, and a signal terminal block 31b to which the signal line 35b is connected. Moreover, although the following description demonstrates the case where the number of the terminal blocks 31 is two, the number of the terminal blocks 31 may be one, or may be three or more.

  The main body 40 is provided with a light emitting unit 60 on the front side (Z-axis negative direction side) and the power supply box 20 on the back side (Z-axis positive direction side). The heat radiating part 50 is provided on the back side of the light emitting part 60, and a plurality of heat radiating fins 51 are arranged at intervals. The heat radiating unit 50 releases heat generated by the light emitting element 61 of the light emitting unit 60 to emit light.

  In the light emitting unit 60, a plurality of light emitting elements 61 are arranged on the light emitting surface on the front side. The light emitting element 61 is, for example, an LED (Light Emitting Diode) chip. The light emitting element 61 emits light according to a control signal from the control board 25 built in the power supply box 20.

  The translucent cover 70 is provided on the front side of the light emitting unit 60 and protects the light emitting unit 60. The translucent cover 70 is a transmissive glass or resin that does not block the light emitted by the light emitting unit 60.

  Next, the configuration of the control board 25 will be described with reference to FIG. FIG. 2 is a block diagram illustrating a configuration of the control board 25 according to the embodiment. FIG. 2 shows only the configuration for controlling the power supply among the configurations of the control board 25.

  As shown in FIG. 2, the control board 25 includes a filter circuit 25a, a rectifier circuit 25b, a smoothing circuit 25c, and a transformer circuit 25d. The filter circuit 25a is, for example, a band-pass filter, and removes noise components from the alternating current supplied from the terminal block 31 through the power supply wiring 26a (see FIG. 3) and outputs it to the rectifier circuit 25b.

  The rectifier circuit 25b is, for example, a diode, rectifies the alternating current from which the noise component input from the filter circuit 25a is removed, and outputs a rectified voltage to the smoothing circuit 25c.

  The smoothing circuit 25c is, for example, a smoothing capacitor, smoothes the rectified voltage input from the rectifying circuit 25b, converts it into a DC voltage, and outputs it to the transformer circuit 25d.

  The transformer circuit 25d steps down the DC voltage input from the smoothing circuit 25c to a predetermined voltage and outputs the voltage to the light emitting unit 60. Thus, in the control board 25, the noise of the alternating voltage input from the wiring 26 is removed by the filter circuit 25a and then input to the transformer circuit 25d.

  Here, when the transformer circuit 25d and the terminal block 31 and the power supply wiring 26a shown in FIG. 1 are close to each other, a magnetic field is generated, and noise is generated by the magnetic field. For this reason, measures such as attaching a ferrite core to the power supply wiring 26a are generally taken as measures against noise.

  However, taking the above-described noise countermeasures is not preferable because the manufacturing cost of the lighting device 1 increases. Therefore, in the lighting device 1 according to the embodiment, the generation of noise is suppressed with an inexpensive configuration.

  Next, the internal configuration of the power supply box 20 according to the embodiment will be described with reference to FIG. FIG. 3 is a schematic diagram illustrating an internal configuration of the power supply box 20 according to the embodiment. 3 is a view of the inside of the power supply box 20 shown in FIG. 1 as viewed from the lower side (Z-axis negative direction side).

  As shown in FIG. 3, the power supply box 20 includes a control board 25, a through hole 28, and a regulating member 21. The control board 25 is provided on each of the inner walls of the opposing side surfaces 20b and 20c of the power supply box 20, and controls the light emitting element 61 shown in FIG.

  The through hole 28 is provided at the center of the back surface 20a of the power supply box 20, and allows the power supply wiring 26a and the signal wiring 26b connected to the control board 25 to pass therethrough. Thus, by providing the through hole 28 at the center of the back surface 20a, the power supply wiring 26a and the signal wiring 26b can pass from the two control boards 25 to the inside of the power supply box 20 with a predetermined distance. .

  The through hole 28 does not need to be provided at the exact center of the back surface 20a, and may be provided with an arbitrary width from the center. Moreover, although the case where the through hole 28 has a substantially perfect circle shape is illustrated in FIG. 3, the through hole 28 may have another shape such as an elliptical shape, a square shape, or a triangular shape. A plurality of through holes 28 may be provided for each control board 25.

  The power supply wiring 26 a is a wiring that passes through the through hole 28 from the power supply terminal block 31 a provided outside the back surface 20 a of the power supply box 20 and is connected to the control board 25 to supply an AC voltage to the control board 25.

  The signal wiring 26 b is a wiring that passes through the through hole 28 from the signal terminal block 31 b provided outside the back surface 20 a of the power supply box 20, is connected to the control board 25, and supplies a dimming signal to the control board 25. Hereinafter, the power supply wiring 26a and the signal wiring 26b are collectively referred to as the wiring 26.

  The control board 25 is connected to the power supply wiring 26 a and the signal wiring 26 b that have passed through the through hole 28. On the control board 25, a transformer circuit 25d is provided. In FIG. 3, the description of the filter circuit 25a and the like shown in FIG. 2 is omitted. 3 shows a case where the transformer circuit 25d is installed in a point-symmetric manner with respect to the through hole 28.

  By arranging the transformer circuit 25d in this way, the distance between the transformer circuits 25d can be sufficiently separated. For this reason, it can suppress that noise generate | occur | produces between the transformer circuits 25d. Note that the installation position of the transformer circuit 25d can be changed, for example, by arranging the transformer circuit 25d substantially parallel to the direction along the Y axis.

  Here, for example, when the wiring 26 and the transformer circuit 25d are close to each other, noise is generated as described above. Therefore, in the lighting device 1 according to the embodiment, the regulating member 21 that regulates the wiring 26 so as not to approach the transformer circuit 25d is provided.

  As shown in FIG. 3, the restricting member 21 bypasses the wiring 26 that has passed through the through hole 28 from the outside to the side surfaces 20 d and 20 e where the control board 25 is not provided. That is, the regulating member 21 regulates the wiring 26 so that the wiring 26 does not approach the transformer circuit 25d.

  Here, the regulating member 21 is an inexpensive fixing member such as a binding band, for example. The regulating member 21 is provided on the back surface 20a near the side surfaces 20e and 20d in the direction from the through hole 28 toward the side surfaces 20e and 20d. For example, the regulating member 21 fixes the wiring 26 to the back surface 20a through a hole (not shown) provided in the back surface 20a of the power supply box 20.

  Thereby, the restricting member 21 can be fixed so that the wiring 26 is not closer to the transformer circuit 25d than the distance at which noise is generated. In the lighting device 1, as described above, an inexpensive fixing member can be used as the regulating member 21. Therefore, according to the illuminating device 1 which concerns on embodiment, generation | occurrence | production of noise can be suppressed with an inexpensive structure.

  Further, for example, the wiring 26 is connected to the control board 25 along the back surface 20 a of the power supply box 20. That is, the regulating member 21 can fix the wiring 26 from the through hole 28 to the control board 25 along the back surface 20a.

  Thus, since the connection location of the wiring 26 to the control board 25 is on the back surface 20a side, the wiring 26 does not need to be unnecessarily lengthened, and thus the manufacturing cost can be suppressed. The regulating member 21 may fix the wiring 26 with a predetermined gap from the back surface 20a of the power supply box 20.

  Further, as shown in FIG. 3, it is preferable that the regulating member 21 is provided so that at least a part of the regulating member 21 fits within the width of the through hole 28 opened in the Y-axis direction. By doing in this way, it is possible to fix the wiring 26 to the two transformer circuits 25d apart from the distance where noise is generated.

  Note that the regulating member 21 may be arranged with a width larger than the opening width of the through hole 28 in the Y-axis direction. In such a case, it is preferable to dispose the regulating member 21 near the control board 25 to which the wiring 26 that fixes the regulating member 21 is connected. In this way, the wiring 26 can be sufficiently separated from the control substrate 25 on the opposite side. Further, the regulating member 21 may be provided on the side surfaces 20 d and 20 e of the power supply box 20.

  Further, a plurality of regulating members 21 may be provided for each wiring such as for the power supply wiring 26 a and the signal wiring 26 b, or a plurality of regulating members 21 may be provided for one wiring 26. Good. Further, the regulating member 21 is not limited to a fixing member such as a binding band. This will be described later with reference to FIG.

  Further, when the control board 25 to which the wiring 26 is connected and the restriction member 21 that fixes the wiring 26 are combined into one set, the set of the control board 25 and the restriction member 21 is point-symmetric with respect to the through hole 28. Be placed. The point symmetry means that it is not necessary to strictly satisfy point symmetry.

  By arranging in this way, the distance between the transformer circuits 25d in the control board 25 can be sufficiently separated. Further, the distance between the wirings 26 connected to the different control boards 25 can be sufficiently separated. Therefore, generation of noise can be suppressed.

  It should be noted that the above-described set of the control board 25 and the regulating member 21 may be arranged symmetrically with respect to the through-hole 28, or arranged so as not to have symmetry. Also good. For example, when arranged in a line symmetrical manner, the wiring 26 can be fixed by one regulating member 21, so that the cost can be reduced.

  Next, the positional relationship between the terminal block 31 and the through hole 28 and the control board 25 will be described with reference to FIG. FIG. 4 is a diagram illustrating an arrangement example of the terminal block 31 according to the embodiment. FIG. 4 shows the power supply box 20 as viewed from the back side. In FIG. 4, the description of the support portion 10, the main body portion 40, the external wiring 35, and the like is omitted to simplify the description.

  As shown in FIG. 4, the power supply terminal block 31a and the signal terminal block 31b are provided with a predetermined interval therebetween. The power terminal block 31a, the signal terminal block 31b, and the two control boards 25 are arranged in line symmetry along a line parallel to the Y axis that passes through the through hole 28.

  By arrange | positioning in this way, each distance of the control board 25, the power supply terminal block 31a, and the signal terminal block 31b can fully be separated. Therefore, it can suppress that noise generate | occur | produces among the control board 25, the power supply terminal block 31a, and the signal terminal block 31b.

  In addition, arrangement | positioning of the power supply terminal block 31a and the signal terminal block 31b shown in FIG. 4 is an example, For example, you may decide to arrange | position the through-hole 28 between the power supply terminal block 31a and the signal terminal block 31b. In such a case, the creepage distance between the power terminal block 31a and the signal terminal block 31b can be sufficiently ensured as compared with the spatial distance, so that the generation of noise between the power terminal block 31a and the signal terminal block 31b is suppressed. be able to.

(Modification)
Next, a modified example of the regulating member 21 according to the embodiment will be described with reference to FIG. FIG. 5 is a diagram illustrating a modified example of the regulating member 21 according to the embodiment. As shown in FIG. 5, the restricting member 22 according to the modification is, for example, a rod-shaped member, and includes a pole 22a and a pole 22b.

  The pole 22a and the pole 22b are fixed to the back surface 20a of the power supply box 20, for example. And the position where the power supply wiring 26a and the signal wiring 26b pass is regulated so that the power supply wiring 26a and the signal wiring 26b are sandwiched between the pole 22a and the pole 22b.

  Thus, since the regulating member 22 can suppress the power supply wiring 26a and the signal wiring 26b from approaching the transformer circuit 25d, the generation of noise can be suppressed.

  Note that the restriction member 22 may be only the pole 22b located on the control board 25 side to which the power supply wiring 26a and the signal wiring 26b are connected. Moreover, you may decide to attach the pole 22a and the pole 22b to the back surface (surface in which the power supply box 20 is provided) of the main-body part 40, for example.

  Further, the regulating member 21 or the regulating member 22 is a hook-like member fixed to the back surface 20a and the side surfaces 20d and 20e of the power supply box 20, and the position through which the power supply wiring 26a and the signal wiring 26b pass is regulated by such a member. It may be.

  Alternatively, the regulating member 21 or the regulating member 22 may be an adhesive tape-like member, and the power supply wiring 26a and the signal wiring 26b may be fixed to the back surface 20a or the side surfaces 20d and 20e with such a member.

  In the above-described embodiment, the lighting device 1 includes the power supply box 20 and the main body 40 one by one. However, the present invention is not limited to this. That is, the lighting device 1 may include one power supply box 20 and a plurality of main body sections 40, or may include a plurality of power supply boxes 20 and one main body section 40. In addition, a plurality of light emitting units 60 may be arranged side by side on the main body 40.

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Illuminating device 10 Support part 20 Power supply box 20a Back surface 20b-20e Side surface 21, 22 Restriction member 25 Control board 26 Wiring 26a Power supply wiring 26b Signal wiring 28 Through-hole 31 Terminal block 31a Power supply terminal block 31b Signal terminal block 35 External wiring 35a Power supply Wire 35b Signal line 40 Body 50 Heat radiating part 51 Heat radiating fin 60 Light emitting part 61 Light emitting element 70 Translucent cover

Claims (3)

A light emitting part including a plurality of light emitting elements;
A rectangular parallelepiped body provided with the light emitting part on the front side;
A rectangular parallelepiped power supply box provided on the back side of the main body;
Comprising
The power box is
A control board provided on each of the inner walls of the opposing side surfaces for controlling the light emitting element;
A through hole provided in the center of the back surface and passing through the wiring connected to the control board;
A regulating member for bypassing the wiring that has passed through the through hole to the side surface side on which the control board is not provided;
An illumination device comprising: The regulating member is
The fixing member that is provided on the back side near the side surface in a direction from the through hole toward the side surface where the control board is not provided, and fixes the wiring to the back surface. The lighting device described. Two sets of the control board and the regulating member are:
The lighting device according to claim 1, wherein the lighting device is arranged so as to be point-symmetric with respect to the through hole when viewed from the back side.

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