JP7147179B2 - power supply - Google Patents

Description

Embodiments of the present invention relate to power supplies.

2. Description of the Related Art Conventionally, proposals have been made regarding internal wiring of electrical equipment having a case body and a cover attached to the case body.

Specifically, for example, in Patent Document 1, a wiring board provided inside the case main body and the housing are described in relation to a case constituted by a case main body and a lid attached to the case main body. and is connected by a ground lead wire.

JP 2009-70887 A

Embodiments provide a power supply device capable of suppressing noise while ensuring workability in attaching and detaching a lid to and from a case body.

A power supply device of an embodiment includes: a housing having a case body having an opening; and a lid attached to cover the opening of the case body; a circuit board provided with a circuit element; one end connected to the inner surface side of the lid, and the other end fixed to a predetermined position on the inner surface of the case body, and the lid is attached to the case body a wiring member configured to have a wiring length that does not come into contact with the circuit element when attached to the circuit element.

According to the power supply device of the embodiment, it is possible to suppress noise while ensuring workability in the work related to attaching and detaching the cover to and from the case body.

1A and 1B are diagrams for explaining an example of a configuration of a lighting device having a power supply device according to an embodiment; FIG. The figure which shows an example of the external appearance of the power supply device which concerns on embodiment. FIG. 2B is a view of the power supply device according to the embodiment when viewed from the direction indicated by the arrow AR in FIG. 2A; FIG. 4 is a diagram for explaining the configuration of the inner surface side of the lid in the power supply device according to the embodiment; FIG. 4 is a sectional view taken along line IV-IV of FIG. 3; FIG. 4 is a diagram for explaining the internal configuration of the case body in the power supply device according to the embodiment; FIG. 4 is a diagram for explaining the internal configuration of the case body in the power supply device according to the embodiment; FIG. 4 is a cross-sectional view of the power supply device according to the embodiment when a cross section in the longitudinal direction of the case main body is viewed from the width direction with the cover attached to the case main body. FIG. 6 is a diagram showing an example when a wiring prohibited area corresponding to the configuration of FIG. 5 is set; FIG. 4 is a diagram showing a state in which the edge of the cover body is arranged so as to substantially match the edge of the opening of the case main body and the ground wire is connected in the power supply device according to the embodiment; FIG. 4 is a diagram showing a state in which the edge of the lid body is shifted to the inner side of the opening of the case body and a ground wire is connected in the power supply device according to the embodiment; FIG. 4 is a diagram showing a state in which a ground wire is connected by arranging the lid and the case main body so that the line segment connecting the ground wire attachment members is orthogonal to the longitudinal direction of the housing in the power supply device according to the embodiment; FIG. 6 is a diagram showing an example in which a ground wire attachment member is installed at a position different from that in FIG. 5 in the power supply device according to the embodiment; FIG. 4 is a diagram for explaining an example in which a device that provides an additional function is provided to the power supply device according to the embodiment; FIG. 4 is a diagram for explaining an example in which a device that provides an additional function is provided to the power supply device according to the embodiment; FIG. 4 is a diagram for explaining an example in which a device that provides an additional function is provided to the power supply device according to the embodiment; FIG. 4 is a diagram for explaining an example in which a device that provides an additional function is provided to the power supply device according to the embodiment; FIG. 4 is a diagram for explaining an example in which a device that provides an additional function is provided to the power supply device according to the embodiment;

Embodiments will be described below with reference to the drawings.

The illumination device 1 includes a light source unit 11 and a power supply device 12, as shown in FIG. FIG. 1 is a diagram for explaining an example of a configuration of a lighting device having a power supply device according to an embodiment.

The light source unit 11 includes, for example, an LED. Further, the light source unit 11 is configured to be lit by driving power supplied from the power supply device 12 .

The power supply device 12 is supplied with power from an external power supply 101 such as a commercial power supply, and converts the supplied power into power necessary for lighting the light source unit 11 . The power supply device 12 may receive a dimming signal via a dimming line (not shown) and convert the received dimming signal into drive power to be supplied to the light source unit 11 based on the received dimming signal. Moreover, the power supply device 12 is configured to have a metal housing 21 as shown in FIGS. 2A and 2B. FIG. 2A is a diagram illustrating an example of the appearance of the power supply device according to the embodiment; FIG. 2B is a diagram of the power supply device according to the embodiment when viewed from the direction indicated by the arrow AR in FIG. 2A.

The housing 21 is formed in a box shape having a lid body 21A and a case body 21B having a concave cross-section and having an upper opening. Further, as shown in FIGS. 2A and 2B, a wiring opening is provided at one longitudinal end of the case body 21B, and a case lid 21C is attached so as to block the wiring opening. The case lid 21C is provided with an introduction portion 22 through which an input line for inputting electric power supplied from the external power source 101 and an output line for supplying driving electric power to the light source unit 11 are inserted. It is The lead-in portion 22 is configured so as to close the gap between the input line and the output line by tightening the lead-in portion 22 so as to close the gap between the input line and the output line, and to be waterproof. The case lid 21C is also attached so as to have a waterproof structure with respect to the case main body 21B.

The lid 21A is configured separately from the case body 21B, and is detachably attached to the case body 21B so as to cover the opening of the case body 21B. Further, the lid 21A is fixed to the opening of the case main body 21B with a fixing member such as a screw. Furthermore, a packing (not shown) is arranged between the lid 21A and the case main body 21B. Therefore, it is possible to prevent water from entering the housing 21 from between the lid 21A and the case body 21B.

FIG. 3 is a diagram for explaining the configuration of the inner surface side of the lid in the power supply device according to the embodiment. As shown in FIG. 3, a ground wire attachment member 31 and an extension slot 32 are provided on the inner surface side of the lid 21A.

The ground wire attachment member 31 is configured as an attachment member for attaching one end of a ground wire 62 (described later) to the inner surface side of the lid 21A. The ground wire attachment member 31 is provided with a fixing member such as a screw, for example, and is installed at a predetermined position on the inner surface side of the lid body 21A that satisfies the conditions described later, and is grounded at the predetermined position. It is configured so that one end of the wire 62 can be fixed.

Expansion slot 32 is attached to lid 21A, for example, as shown in FIGS. 4 is a cross-sectional view taken along line IV-IV of FIG. 3. FIG.

As shown in FIGS. 5 and 6, three circuit boards 33A, 33B, and 33C are arranged along the longitudinal direction of the case body 21B (corresponding to the left-right direction in FIG. 5) on the inner bottom of the case body 21B. It is installed in the In this embodiment, for convenience of illustration and explanation, the three circuit boards 33A, 33B, and 33C may be collectively referred to as the circuit board 33 in some cases. Inside the case main body 21B, as shown in FIG. 5, a terminal portion 23 connected to an input line and an output line inserted through the introduction portion 22 is arranged. The terminal section 23 is configured to have an input terminal 23A and an output terminal 23B. The input terminals 23A are connected to the input sides of the circuit boards 33A, 33B and 33C by input side wiring members 42, respectively. The output terminals 23B are connected to the output sides of the circuit boards 33A, 33B, and 33C by output-side wiring members 52, respectively. 5 and 6 are diagrams for explaining the internal configuration of the case main body 21B in the power supply device according to the embodiment.

As shown in FIGS. 5 and 6, the input sides of the circuit boards 33A, 33B and 33C are provided with one or more circuit elements 41A for removing noise and the like. In addition, the circuit element 41A is provided on one end side of the longitudinal direction of the circuit board 33, which is a direction parallel to the width direction of the case body 21B (corresponding to the vertical direction in FIG. 5 and the horizontal direction in FIG. 6). there is 6, the circuit element 41A is constructed by using parts whose maximum height from the surface of the circuit board 33 is LHA.

As shown in FIGS. 5 and 6, one or more circuit elements 51A for generating drive power are provided on the output sides of the circuit boards 33A, 33B and 33C. Further, the circuit element 51A is provided on the other end side of the circuit board 33 in the longitudinal direction. As shown in FIG. 6, the circuit element 51A is configured using components such that the maximum height from the surface of the circuit board 33 is LHB, which is greater than LHA.

That is, according to the configuration described above, the circuit board 33 is configured by providing one or more circuit elements on its surface. Further, according to the configuration as described above, the circuit element 41A and the circuit element 51A are arranged on the surface of the circuit board 33 at positions separated from each other along the direction parallel to the width direction of the case main body 21B. is provided.

As shown in FIGS. 5 and 7, a ground wire attachment member 61 is provided inside the case body 21B. FIG. 7 is a diagram illustrating an example of a state in which the cover is attached to the case body in the power supply device according to the embodiment;

The ground wire attachment member 61 is configured as an attachment member for attaching the other end of the ground wire 62 to the inner bottom portion of the case main body 21B. The ground wire attachment member 61 may be directly fixed to the inner bottom of the case body 21B, or may be configured as part of an attachment plate (not shown) for attaching the terminal portion 23, for example. The ground wire mounting member 61 has a fixing member such as a screw, and is installed at a predetermined position on the inner bottom of the case body 21B, and the other end of the ground wire 62 is fixed at the predetermined position. It is configured so that it can be

The ground wire 62 is configured such that one end is connected to the ground wire mounting member 31 and the other end is fixed to the ground wire mounting member 61 . Specifically, the ground wire 62 has, for example, a crimp terminal that can be screwed in the ground wire mounting member 31 at one end, and a crimp terminal that can be screwed in the ground wire mounting member 61 at the other end. It is configured to be set in By fixing both ends of the ground wire 62 to the ground wire mounting member 31 and the ground wire mounting member 61 in this way, the continuity of the ground between the lid 21A and the case body 21B can be ensured. In particular, even when the lid body 21A and the case body 21B are configured separately and an insulating member such as packing is interposed between the lid body 21A and the case body 21B for the purpose of waterproofing or the like, the lid The continuity of the ground can be ensured by electrically connecting the body 21A and the case body 21B.

Here, in the power supply device 12 according to the present embodiment, as shown in FIGS. 7 and 8, in a state where the lid 21A is attached to the case body 21B, the ground wire 62 is located outside the wiring prohibited area WPA. Arranged so as not to enter inside. FIG. 7 is a cross-sectional view of the case main body 21B with the cover 21A attached thereto, as viewed from the width direction along the longitudinal direction of the case main body 21B. A region surrounded by a dashed line in FIG. 7 is set as a wiring prohibited region WPA corresponding to the circuit element 51A. FIG. 8 is a diagram showing an example in which a wiring prohibited area corresponding to the configuration of FIG. 5 is set. In this embodiment, the wiring length is set such that the ground wire 62 connecting the ground wire mounting member 31 and the ground wire mounting member 61 does not enter the wiring prohibited area WPA set around the circuit elements 41A and 51A. configured with In other words, the total length of the ground wire 62 is a predetermined length with respect to the linear distance EK connecting the ground wire attachment member 31 and the ground wire attachment member 61 in the state where the lid 21A is attached to the case body 21B. It is configured to have a length with an extra length of less than If the ground wire 62 is excessively long, at least part of the ground wire 62 may be positioned close to either the circuit element 41A or the circuit element 51A when the lid 21A is attached to the case body 21B. Therefore, noise emitted from the circuit element may easily enter the ground line 62 .

Therefore, in the present embodiment, an area where the noise intensity is greater than a predetermined intensity when the circuit elements 41A and 51A and the ground wire come into contact with each other or are arranged close to each other is set as the wiring prohibited area WPA. In addition, when the lid 21A is attached to the case main body 21B, the extra length of the ground wire 62 and the ground wire mounting members 31 and 61 are arranged so that the ground wire 62 does not enter the wiring prohibited area WPA. The installation position of each is specified.

The wiring prohibited area WPA is an area set to surround each of the circuit elements 41A and 51A. Therefore, when the circuit elements 41A and 51A are provided at positions such as those illustrated in FIG. The extra length of the ground wire 62 and the installation position of the ground wire mounting member 31 may be defined so that the ground wire 62 passes through.

In addition, in the power supply device 12 according to the present embodiment, the circuit elements 41A and 51A are arranged in the width direction of the circuit board 33, respectively, and the ground wire 62 is arranged in the central region in the width direction of the case main body 21B. The ground wire mounting members 31 and 61 are arranged so as to do so. Therefore, in the power supply device 12 according to the present embodiment, the ground wire 62 can have extra length, and as a result, workability when connecting the ground wire 62 to the lid 21A can be improved.

Next, a construction method when the extra length of the ground wire 62 is specified will be described with reference to FIGS. 9A, 9B and 9C. 9A, 9B and 9C show the space between the ground wire mounting member 31 of the lid body 21A facing upward and the ground wire mounting member 61 of the case main body 21B having the opening facing upward. It shows a state of connection with a ground wire 62 . In addition, in FIGS. 9A, 9B and 9C, for the sake of simplification of illustration, the description of each part other than the part related to the explanation of the construction method described below is omitted.

The operation of connecting both ends of the ground wire 62 to the ground wire attachment member 31 and the ground wire attachment member 61 is performed before attaching the cover 21A to the case main body 21B. Therefore, if the ground wire 62 does not have sufficient extra length, it becomes difficult to connect both ends of the ground wire 62 to the ground wire mounting members 31 and 61 . FIG. 9A shows a state in which the edge of the cover 21A is arranged so as to substantially match the edge of the opening of the case main body 21B and the ground wire 62 is connected. In the state shown in FIG. 9A, the workability can be improved by providing the ground wire 62 with an extra length with respect to the distance between the ground wire mounting member 31 and the ground wire mounting member 61 . On the other hand, when the cover 22A is attached so as to close the opening of the case body 22B in the state shown in FIG. The possibility arises of being inside the area WPA.

Therefore, in this embodiment, for example, as shown in FIG. I am trying to connect. In FIG. 9B, the ground wire attachment member 61 is arranged in the center of the width direction of the case body 22B, and the ground wire attachment member 31 is arranged on the side edge side of the width direction center of the lid body 22A. indicates if there is When the lid 22A is attached so as to block the opening of the case body 22B from the state shown in FIG. It is possible to prevent the ground wire 62 having the full length from entering the wiring prohibited area WPA. In such a case, the total length (wiring length) of the ground wire 62 is the height direction ( 6), plus the shortest distance from the edge of the lid 22A to the ground wire mounting member 31 as an extra length. That is, in the present embodiment, the total length (wiring length) of the ground wire 62 is set to at least the length EL of the portion indicated by the dashed line in FIG. 7 plus an extra length. Thus, the total length of the ground wire 62 is set longer than the length EL regardless of the position of the ground wire mounting member 31 . FIG. 9B shows a case where the overall length of the ground wire 62 is set to be the shortest and the surplus length of the ground wire 62 is set to be as small as possible.

Further, in this embodiment, for example, as shown in FIG. 9C, the edge of the opening of the case body 22B and the edge of the lid 22A are aligned, and the lid 22A and the case body 22B are longitudinally aligned with each other. The ground wire 62 may be connected in a shifted state. 9C shows a state in which the lid 22A and the case main body 22B are arranged so that the line connecting the ground wire attachment member 31 and the ground wire attachment member 61 is perpendicular to the longitudinal direction of the housing 22. FIG. The total length of the ground wire 62 in the state shown in FIG. 9C is at least the length that allows connection between the ground wire mounting member 31 and the ground wire mounting member 61, that is, longer than the straight line distance EK, and the lid body 22A. is set to a length such that it does not enter the wiring prohibited area WPA when attached to the case body 22B. In addition, FIG. 9C shows a case where the ground wire attachment member 31 and the ground wire attachment member 61 are arranged in the center of the width direction of the lid 22A and the case main body 22B, respectively. In such a case, by attaching the cover 22A to the case main body 22B, the ground wire attachment member 31 and the ground wire attachment member 61 are arranged so as to be displaced in the longitudinal direction. Here, as shown in FIG. 9C, the edge of the opening of the case body 22B and the edge of the lid body 22A are aligned with each other, and the lid body 22A and the case body 22B are shifted in the longitudinal direction. The member 31 is arranged on the edge side of the lid body 22A on the side of the ground wire mounting member 61, and the entire length of the ground wire 62 is set to the shortest distance connecting the ground wire mounting member 31 and the ground wire mounting member 61. Therefore, the surplus length of the ground wire 62 can be shortened. Further, when the ground wire mounting member 31 is disposed on the edge of the lid 22A opposite to the ground wire mounting member 61, the surplus length of the ground wire 62 can be set long.

10A and 10B are diagrams showing an example in which the ground wire attachment member is installed at a position different from that in FIG. 5 in the power supply device according to the embodiment. In the power supply device 12 according to the present embodiment, the maximum height LHA of the circuit element 41A is smaller than the maximum height LHB of the circuit element 51A (see FIG. 6). WPA can be set to a relatively small area compared to the wiring prohibited area WPA corresponding to the circuit element 51A. Therefore, in the power supply device 12 according to the present embodiment, for example, as shown in FIG. 61 (predetermined position on the inner bottom of the case body 21B) to the circuit element 41A side (the area where the wiring prohibition area WPA is small). good. Further, according to the configuration illustrated in FIG. 10, the extra length of the ground wire 62 can be increased as compared with the configuration illustrated in FIG.

As described above, according to the power supply device 12 of the present embodiment, the movable range of the lid 21A and the movement of the circuit board 33 in the state where both ends of the ground wire 62 are connected to the ground wire mounting members 31 and 61 The extra length of the ground wire 62 and the installation position of the ground wire mounting member 31 are defined while taking into consideration the intensity of noise emitted from each circuit element provided on the surface. Therefore, according to the power supply device 12 of the present embodiment, it is possible to suppress noise while ensuring workability in the work related to attaching and detaching the cover to and from the case body.

In the present embodiment, the extra length of the ground wire 62 and the installation position of the ground wire mounting member 31 are defined by the excess length of the wiring member connected to the device provided in the expansion slot 32. , and the installation position of the expansion slot 32 may be applied as a defining method.

Specifically, for example, as shown in FIG. 11, when a surge protection device 71, which is a device having a function to protect the power supply device 12 from surges, is provided in the expansion slot 32, the input side wiring member 42 and one end of a ground wire 62A separate from the ground wire 62 are connected to a surge protection device 71. FIG. Therefore, when the surge protection device 71 is provided in the expansion slot 32, the above-described method for defining the extra length of the ground wire 62 and the installation position of the ground wire mounting member 31 is applied to the input terminal 23A of the terminal portion 23. , the extra length of the ground wire 62A, the other end of which is fixed to the ground wire mounting member 61, and the installation position of the expansion slot 32. It can be applied as a regulation method for the case. FIG. 11 is a diagram for explaining an example in which a device that provides an additional function to the power supply device according to the embodiment is provided;

Further, for example, as shown in FIG. 12, when a noise reduction device 72, which is a device having a function of reducing noise contained in the power supplied from the external power supply 101, is provided in the expansion slot 32, One end of the input side wiring member 42 and one end of the ground wire 62A are connected to the noise reduction device 72 . Therefore, when the noise reduction device 72 is provided in the expansion slot 32, the above-described method of defining the excess length of the ground wire 62 and the installation position of the ground wire mounting member 31 is applied to the input terminal 23A of the terminal section 23. , the extra length of the ground wire 62A, the other end of which is fixed to the ground wire mounting member 61, and the installation position of the expansion slot 32. It can be applied as a regulation method for the case. FIG. 12 is a diagram for explaining an example in which a device that provides an additional function to the power supply device according to the embodiment is provided;

Further, for example, as shown in FIG. 13, when a transformation device 73, which is a device having a function of transforming the voltage of the power supplied from the external power supply 101, is provided in the expansion slot 32, the input side wiring One end of the member 42 and one end of the ground wire 62A are connected to the transformer 73 . Therefore, in the case where the transformer device 73 is provided in the expansion slot 32, the method for defining the extra length of the ground wire 62 and the installation position of the ground wire mounting member 31 as described above is applied to the input terminal 23A of the terminal section 23. When specifying the extra length of the input side wiring member 42 to which the other end is fixed, the extra length of the ground wire 62A to which the other end is fixed to the ground wire mounting member 61, and the installation position of the expansion slot 32 It can be applied as a method of specifying FIG. 13 is a diagram for explaining an example in which a device that provides an additional function is provided to the power supply device according to the embodiment;

Further, for example, as shown in FIG. 14, a device having a function of converting the duty ratio of a pulsed dimming signal supplied from the outside of the power supply device 12 for adjusting the amount of light when the light source unit 11 is lit. In the case where the dimming signal conversion device 74 is provided in the expansion slot 32, one end of the dimming line 81, which is a wiring member for transmitting the dimming signal input from the terminal portion 23 to the circuit board 33, is It is connected to a dimming signal converter 74 . Therefore, when the dimming signal conversion device 74 is provided in the expansion slot 32, the extra length of the ground wire 62 and the installation position of the ground wire mounting member 31 as described above can be determined by the terminal portion 23. It can be applied as a regulation method for defining the extra length of the adjustment line 81 whose end is fixed and the installation position of the expansion slot 32 . FIG. 14 is a diagram for explaining an example in which a device that provides an additional function is provided to the power supply device according to the embodiment;

Further, for example, as shown in FIG. One end of an input-side wiring member 42A separate from the connected input-side wiring member 42 and one end of an output-side wiring member 52A separate from the output-side wiring member 52 connected to the output circuit section 51. , are connected to the electrical circuit device 75 . Therefore, when the electric circuit device 75 is provided in the expansion slot 32, the extra length of the ground wire 62 and the installation position of the ground wire mounting member 31 as described above are defined by the input terminal 23A of the terminal portion 23. The extra length of the input side wiring member 42A whose other end is fixed to the terminal portion 23, the extra length of the output side wiring member 52A whose other end is fixed to the output terminal 23B of the terminal portion 23, and the installation position of the expansion slot 32 , can be applied as a stipulation method when stipulating. FIG. 15 is a diagram for explaining an example in which a device that provides an additional function is provided to the power supply device according to the embodiment; It should be noted that the expansion slots 32 may be formed using any shape and/or material. Further, in this embodiment, the expansion slot 32 may not be provided, and the surge protective device 71 or the like may be attached to the lid 21A directly or via another member.

While several embodiments of the invention have been described, these embodiments have been illustrated by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

1 lighting device 11 light source unit 12 power supply device 21 housing 21A lid 21B case main bodies 31, 61 ground wire mounting members 33A, 33B, 33C circuit board 42 input side wiring member 52 output side wiring member 62 ground wire

Claims (3)

A housing having a case body having an opening and a lid attached to cover the opening of the case body;
a circuit board provided inside the case body and provided with one or more circuit elements;
One end is connected to the inner surface of the lid, the other end is fixed at a predetermined position on the inner surface of the case body, and the circuit is mounted in the case body with the lid attached to the case body. a wiring member configured to have a wiring length that does not contact the element;
A power supply device comprising: A first circuit element is arranged on one end of the circuit board, and a second circuit element having a height higher than that of the first circuit element is arranged on the other end of the circuit board,
The lid is arranged such that one end of the wiring member in a state where the lid is attached to the case body is arranged closer to the first circuit element than the second circuit element when viewed from above. attached to the body
The power supply device according to claim 1, characterized in that: 3. The power supply device according to claim 1, wherein one end of said wiring member is attached to the inner surface side of said lid via a predetermined structure.

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