Substrate system, power supply device, lighting device, and replacement method

Abstract

To easily achieve replacement of service life-limited components.SOLUTION: A substrate system 1 includes a plurality of electronic components B1, a printed wiring board 2, and a connection part 3. The plurality of electronic components B1 includes a service life-limited component 4. The plurality of electronic components B1 constitutes a power supply circuit. At least some of the plurality of electronic components B1 are mounted on the printed wiring board 2. The connection part 3 is provided on the printed wiring board 2 and performs both mechanical and electrical connections between the printed wiring board 2 and a connected terminal 5 on a service life-limited component 4 side. The connection part 3 has an opening 31 into which the connected terminal 5 is inserted, and a regulation mechanism with a rolled-up structure. The regulation mechanism contacts with the connected terminal 5 inserted into the opening 31 in a bite-like manner and regulates the movement of the connected terminal 5 to a side opposite to the insertion direction into the opening 31.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure generally relates to a substrate system, a power supply device, a lighting device, and a replacement method. More specifically, the present disclosure relates to a substrate system including a finite-life part, a power supply device including the substrate system, a lighting device including the power supply device, and a replacement method for the finite-life part. [Background technology]

[0002] Patent Document 1 discloses a power supply device. This power supply device has a capacitor module with an electrolytic capacitor built in, and a capacitor fixing part that fixes the capacitor module in a detachable manner. The capacitor module has a male-threaded load terminal. The capacitor fixing part has a female-threaded negative electrode connection terminal that screws into the load terminal of the capacitor module. With this power supply device, the electrolytic capacitor can be easily replaced by replacing the capacitor module, and the life of the power supply device can be extended. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-99578 A Summary of the Invention [Problem to be solved by the invention]

[0004] The configuration of the screw-structured capacitor module including the electrolytic capacitor (a part with a finite life) described in Patent Document 1 may be difficult to realize easily.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and aims to provide a board system, a power supply device, a lighting device, and a replacement method that can make it easier to replace parts with a limited lifespan. [Means for solving the problem]

[0006] A substrate system according to one aspect of the present disclosure includes a plurality of electronic components, a printed wiring board, and a connection portion. The plurality of electronic components include finite-life components. The plurality of electronic components constitute a power supply circuit. At least a portion of the plurality of electronic components are mounted on the printed wiring board. The connection portion is provided on the printed wiring board and performs both mechanical and electrical connection between the printed wiring board and a connected terminal on the finite-life component side. The connection portion has an opening into which the connected terminal is inserted, and a regulating mechanism having a barb structure. The regulating mechanism contacts the connected terminal inserted into the opening in a bite-in manner, and regulates movement of the connected terminal in a direction opposite to the insertion direction into the opening.

[0007] A power supply device according to an aspect of the present disclosure includes the above-described board system and a case. The case houses the board system.

[0008] A lighting device according to an aspect of the present disclosure includes the above-described power supply device and a light source. The light source is turned on by power supplied from the power supply device.

[0009] A replacement method according to one aspect of the present disclosure is a method for replacing the finite-life part in the board system. The connected terminal is a lead terminal of the finite-life part. The replacement method includes a cutting step, a removing step, and a connecting step. In the cutting step, the lead terminal is cut between the opening and the main body of the finite-life part. In the removing step, the piece of the lead terminal separated from the main body in the cutting step is pulled out in the insertion direction and removed. In the connecting step, another finite-life part is connected to the printed wiring board via the connection portion. Effect of the Invention

[0010] The present disclosure has the advantage of making it easier to replace parts with a limited lifespan. [Brief description of the drawings]

[0011] [Figure 1]FIG. 1 is an exploded perspective view of a main part of a substrate system according to an embodiment. [Diagram 2] 2A and 2B are cross-sectional views of a connection portion in the above-mentioned substrate system. [Diagram 3] FIG. 3 is a schematic diagram of a power supply device and a lighting device including the above-mentioned board system. [Figure 4] FIG. 4 is an exploded perspective view of a main part of the first modified example of the substrate system. [Diagram 5] FIG. 5 is a cross-sectional view of a connection portion in the first modified example of the above embodiment. [Figure 6] FIG. 6 is a schematic perspective view of an external appearance of a release jig applied in the above-mentioned modified example 1. FIG. [Figure 7] Fig. 7A is a top view of a main part of the substrate system according to Modification 2. Fig. 7B is a cross-sectional view of the main part taken along line AA in Fig. 7A. [Figure 8] FIG. 8 is a cross-sectional view of a main part of a third modified example of the substrate system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, a board system, a power supply device, and a lighting device according to an embodiment will be described with reference to the drawings. The drawings referred to in the following embodiments are schematic drawings, and the sizes and thicknesses of the components in the drawings do not necessarily reflect the actual dimensions, and the size ratios and thickness ratios between the components do not necessarily reflect the actual dimensional ratios.

[0013] (Embodiment) (1) Overview First, an overview of a substrate system 1, a power supply device 10, and a lighting device 100 according to an embodiment will be described with reference to FIGS. 1 to 3. FIG.

[0014] A board system 1 (circuit board system) according to an embodiment includes a plurality of electronic components B1, a printed wiring board 2, and a connection portion 3. The plurality of electronic components B1 includes a finite-life component 4. The plurality of electronic components B1 configure a power supply circuit 17.

[0015] On the printed wiring board 2, at least some (for example, all) of the multiple electronic components B1 are mounted.

[0016] The connection portion 3 is provided on the printed wiring board 2, and performs both mechanical and electrical connection between the printed wiring board 2 and a connected terminal 5 on the side of the finite-life part 4. The "connected terminal 5 on the side of the finite-life part 4" referred to here is, as an example, a male terminal 61 of the fixed portion 6 (described later) which is a separate member from the finite-life part 4. However, the "connected terminal 5 on the side of the finite-life part 4" does not have to be a separate member from the finite-life part 4, and may be a lead terminal 41 of the finite-life part 4.

[0017] The connection portion 3 has an opening 31 into which the connected terminal 5 is inserted, and a restricting mechanism 32 having a return structure X1. The restricting mechanism 32 comes into contact with the connected terminal 5 inserted into the opening 31 in a biting manner, and restricts movement of the connected terminal 5 in the opposite direction to the insertion direction A1 (see FIG. 2A ) into the opening 31.

[0018] In the board system 1 according to the embodiment, movement in the opposite direction to the insertion direction A1 is restricted by biting into the connected terminals 5, so that it is more likely that the finite-life component 4 can be replaced more easily than in the case where the finite-life component 4 is directly soldered to the printed wiring board 2. Also, compared to the configuration of Patent Document 1, restriction of movement (in the opposite direction to the insertion direction A1) can be achieved with a simpler configuration. As a result, the board system 1 according to the embodiment has the advantage that it makes it easier to replace the finite-life component 4.

[0019] Moreover, the power supply device 10 according to the embodiment includes a board system 1 and a case 10A (see FIG. 3) that houses the board system 1. Furthermore, the lighting device 100 according to the embodiment includes the power supply device 10 and a light source 20. The light source 20 is turned on by power supplied from the power supply device 10. The power supply device 10 and the lighting device 100 according to the embodiment include the board system 1 according to the embodiment, and therefore can easily replace the limited-life parts 4.

[0020] (2) Details Next, the configurations of the board system 1, the power supply device 10, and the lighting device 100 according to the embodiment will be described in detail with reference to FIG. 1 to FIG. 3. In the following, the directions will be defined based on the (unembodied) up-down, left-right, and front-rear arrows shown in FIG. 1, FIG. 2A, and FIG. 2B. That is, the direction perpendicular to the printed wiring board 2 is defined as the up-down direction, and for example, the surface 2A of the printed wiring board 2 shown in FIG. 1 is the upper surface. The direction along the insertion direction A1 shown in FIG. 2A corresponds to the front-rear direction, and the insertion direction A1 corresponds to the front direction. In addition, the longitudinal direction (see FIG. 1) of the main body 60 of the fixing part 6 (described later) is defined as the left-right direction. However, the definition of these directions is merely for the purpose of making the description easier to understand, and is not intended to limit the direction in which the board system 1 is used.

[0021] The lighting device 100 according to the embodiment includes a power supply device 10 and a light source 20, as shown in FIG.

[0022] (2.1) Power supply device The power supply device 10 is a device for supplying lighting power to the light source 20. As shown in Fig. 3, the power supply device 10 includes a case 10A, a power supply circuit 17, a pair of power supply terminals T11, T12, and a pair of output terminals T21, T22.

[0023] The case 10A is a housing made of, for example, a steel plate (such as a hot-dip galvanized steel plate). The case 10A houses a power supply circuit 17 and holds a pair of power supply terminals T11, T12 and a pair of output terminals T21, T22 in a manner that they are exposed to the outside, for example. The power supply circuit 17 has a transformer 11, a rectifier circuit 12, a limited-life part 4 (one of the electronic parts B1), a conversion circuit 14, and a control circuit 15.

[0024] The power supply circuit 17 is configured by a plurality of electronic components B1 of the board system 1. That is, the plurality of electronic components B1 of the board system 1 include, in addition to the finite-life parts 4, one or more electronic components B1 that configure each of the transformer 11, the rectifier circuit 12, the conversion circuit 14, and the control circuit 15. The number of finite-life parts 4 is not particularly limited, but is assumed to be one here as an example.

[0025] In short, the power supply device 10 includes a board system 1 and a case 10A, and the board system 1 is housed in the case 10A. The board system 1 includes, in addition to a plurality of electronic components B1 that constitute a power supply circuit 17, a printed wiring board 2 (see FIG. 1) on which at least some of the plurality of electronic components B1 are mounted, and a connection portion 3 (see FIGS. 1, 2A, and 2B). The board system 1 further includes a fixing portion 6.

[0026] (2.1.1) Power terminal The pair of power supply terminals T11, T12 are terminals for inputting AC power supplied from the AC power supply 30 to the power supply device 10. One of the power supply terminals T11 is electrically connected to a first end of the AC power supply 30. The other power supply terminal T12 is electrically connected to a second end of the AC power supply 30.

[0027] (2.1.2) Output terminal The pair of output terminals T21, T22 are terminals for outputting DC power generated by the power supply device 10 to the light source 20. One output terminal T21 is electrically connected to a first terminal of the light source 20. The other output terminal T22 is electrically connected to a second terminal of the light source 20.

[0028] (2.1.3) Transformer The transformer 11 has a primary winding 111 and a secondary winding 112. The turns ratio between the primary winding 111 and the secondary winding 112 is, for example, 1:1. Therefore, the magnitude of the voltage applied to the primary winding 111 and the magnitude of the voltage applied to the secondary winding 112 are the same.

[0029] A first end of the primary winding 111 is electrically connected to one power supply terminal T11, and a second end of the primary winding 111 is electrically connected to the other power supply terminal T12.

[0030] A first end of the secondary winding 112 is electrically connected to one of a pair of AC input terminals of the rectifier circuit 12 described below. A second end of the secondary winding 112 is electrically connected to the other of the pair of AC input terminals.

[0031] (2.1.4) Rectifier circuit The rectifier circuit 12 is, for example, a diode bridge circuit in which four diodes are connected in a bridge shape. The rectifier circuit 12 has a pair of AC input terminals and a pair of pulsating current output terminals. As described above, one of the pair of AC input terminals is electrically connected to a first end of the secondary winding 112 of the transformer 11. As described above, the other of the pair of AC input terminals is electrically connected to a second end of the secondary winding 112 of the transformer 11.

[0032] One of the pair of pulsating current output terminals is electrically connected to the high potential side input terminal of the conversion circuit 14. The other of the pair of pulsating current output terminals is electrically connected to the low potential side input terminal of the conversion circuit 14.

[0033] (2.1.5) Limited life parts The finite-life part 4 is, for example, a capacitor C1, as shown in Fig. 1 and Fig. 3. The capacitor C1 is, for example, an aluminum electrolytic capacitor (hereinafter, also referred to as "aluminum electrolytic capacitor C1"). In this embodiment, the capacitor C1 is, as shown in Fig. 1, a lead part (DIP part) having a substantially cylindrical body 40 and a pair of lead terminals 41, 41.

[0034] It should be noted that a "limited-life part" is a part that has a lifespan, and in the case where the limited-life part 4 is an aluminum electrolytic capacitor C1, the lifespan of the limited-life part 4 is, for example, 100,000 hours.

[0035] (2.1.6) Fixed part The fixing part 6 has a main body 60 and one or more (here, five) male terminals 61. The fixing part 6 fixes the lead terminal 41 of the finite-life part 4 so that the lead terminal 41 is electrically connected to the male terminal 61.

[0036] The main body 60 is made of, for example, resin. The main body 60 is formed in the shape of a rectangular plate that is long in the left-right direction. The main body 60 has a plurality of holes 62 (here, five) aligned in the left-right direction on its rear surface. The pair of lead terminals 41, 41 are inserted into any two of the plurality of holes 62 and fixed to corresponding two of the five male terminals 61 by, for example, solder bonding. The main body 60 may have a plurality of grooves that engage the lead terminals 41 in a hooked manner, instead of the plurality of holes 62.

[0037] The five male terminals 61 are pin-shaped terminals. The five male terminals 61 protrude forward from the front surface of the main body 60. The five male terminals 61 are arranged in a line in the left-right direction on the front surface of the main body 60. The five male terminals 61 are held in the main body 60 so as to correspond one-to-one with the five holes 62. Note that the number of holes 62 and male terminals 61 is not limited to five each, and may be, for example, two each, which is the same as the number of lead terminals 41.

[0038] In the example of FIG. 1, one limited-life part 4 (capacitor C1) is fixed to the fixed portion 6, but two or more limited-life parts 4 may be fixed thereto.

[0039] In the example of FIG. 1, in order to adjust the position and height of the body 40 of the finite life part 4 relative to the printed wiring board 2, the finite life part 4 is fixed to the fixing part 6 with a pair of lead terminals 41, 41 bent. In particular, five terminals D2 of a socket D1, which will be described later, are bent into an L shape so that the body 40 of the finite life part 4 is arranged in a fallen manner along the board surface (surface 2A of the printed wiring board 2). In other words, the body 40 is arranged so that its axial direction is parallel to the surface 2A of the printed wiring board 2. The body 40 is adhesively fixed to the surface 2A of the printed wiring board 2, for example. By fixing the body 40 to the printed wiring board 2, vibration of the body 40 can be prevented.

[0040] (2.1.7) Connections The connection part 3 is provided on the printed wiring board 2. The connection part 3 is mounted on the printed wiring board 2 by soldering. The connection part 3 performs both mechanical and electrical connection between the printed wiring board 2 and a connected terminal 5 on the side of the finite-life part 4. Here, the connected terminal 5 is the male terminal 61 of the fixing part 6 described above.

[0041] The connection portion 3 is configured as, for example, a socket D1 to which the fixing portion 6 can be detached. The socket D1 is soldered to the printed wiring board 2. The socket D1 has, for example, a resin body formed into a rectangular box shape. The socket D1 has, on its front surface, one or more (here, five) L-shaped terminals D2 (lead terminals: see FIG. 1) that protrude forward and are bent downward. The five terminals D2 are arranged in a line in the left-right direction on the front surface of the socket D1. The five terminals D2 are held in the socket D1 so as to correspond one-to-one to five openings 31 described later.

[0042] 1, the socket D1 can be disposed on the front surface 2A (upper surface) side of the printed wiring board 2. That is, five terminals D2 are inserted from the front surface 2A (upper surface) side of the printed wiring board 2 into five predetermined through holes in the printed wiring board 2, respectively, and solder-joined on the rear surface (lower surface) side of the printed wiring board 2.

[0043] The connection portion 3 also has one or more (here, five) openings 31 into which the connection terminals 5 are inserted, and a restriction mechanism 32 (see FIGS. 2A and 2B) having a return structure X1.

[0044] The five openings 31 are arranged side by side in the left-right direction on the rear surface of the socket D1. The five male terminals 61 of the fixed portion 6 can be inserted into the five openings 31 in a one-to-one relationship.

[0045] The socket D1 has one or more (here, five) accommodation spaces SP1 (see FIG. 2A and FIG. 2B) that accommodate one or more (here, five) regulating mechanisms 32, respectively. Each opening 31 communicates with a corresponding accommodation space SP1 among the five accommodation spaces SP1 arranged in the socket D1. In short, five accommodation spaces SP1 are provided in the socket D1 so as to correspond one-to-one with the five openings 31, and each accommodation space SP1 accommodates one regulating mechanism 32. Note that FIG. 2A and FIG. 2B show one of the five accommodation spaces SP1 as an example. The numbers of the openings 31, the regulating mechanisms 32, and the accommodation spaces SP1 are not limited to five, and may be, for example, two, which is the same as the number of the lead terminals 41. The numbers of the openings 31, the regulating mechanisms 32, and the accommodation spaces SP1 are not limited to being the same as each other, and for example, a plurality of regulating mechanisms 32 may be accommodated in one accommodation space SP1.

[0046] Each regulating mechanism 32 comes into contact with the connection terminal 5 inserted into the opening 31 in a bite-wise manner, and regulates the movement of the connection terminal 5 in the opposite direction (rearward movement) to the insertion direction A1 (forward direction) into the opening 31.

[0047] Specifically, the restriction mechanism 32 has a locking spring 320 (see FIGS. 2A and 2B) the tip of which bites into the connected terminal 5. The restriction mechanism 32 also has a fixed terminal 321 (see FIGS. 2A and 2B) having a substantially L-shaped cross section.

[0048] The locking spring 320 is a leaf spring, and is accommodated in the accommodation space SP1 in a state in which it is bent into a substantially U-shape. The fixed terminals 321 are accommodated in the accommodation space SP1 so as to face the locking spring 320. Each fixed terminal 321 is electrically connected to a corresponding one of the five terminals D2. The fixed terminals 321 may be the same member as the terminals D2.

[0049] In particular, the locking spring 320 extends in the front-rear direction from its first end 3201 to a central portion 3203, bends forward from the central portion 3203, and its tip (second end 3202) extends toward the fixed terminal 321. As a result, the locking spring 320 as a whole has a burr structure X1 that bends back toward the insertion direction A1 from the central portion 3203 to the second end 3202.

[0050] As shown in Figs. 2A and 2B, when the male terminal 61 (connected terminal 5) is inserted from the opening 31 along the insertion direction A1, it comes into contact with the vicinity of the second end 3202 of the locking spring 320. When the male terminal 61 is further pushed forward against the stress from the locking spring 320, the locking spring 320 is elastically deformed with the central portion 3203 as a fulcrum, and the portion from the central portion 3203 to the second end 3202 is displaced forward, allowing the male terminal 61 to enter. As a result, the tip of the male terminal 61 hits the bottom (fixed terminal 321) of the accommodation space SP1. The male terminal 61 is pressed against the fixed terminal 321 by the elastic return force from the second end 3202 of the locking spring 320, and a stable electrical connection between the male terminal 61 and the fixed terminal 321 is achieved.

[0051] Here, since the locking spring 320 has the return structure X1, the second end 3202 is configured to bite into the male terminal 61, and the backward movement of the male terminal 61 is restricted. Therefore, the connection between the male terminal 61 and the fixed terminal 321 is prevented from being unintentionally released. As a result, electrical reliability is improved.

[0052] In this manner, the two lead terminals 41 of the capacitor C1 are electrically connected to the two fixed terminals 321 of the connection portion 3 via the two male terminals 61 of the fixed portion 6. As a result, the two lead terminals 41 are electrically connected to the wiring pattern (conductor pattern) formed on the printed wiring board 2 via the two terminals D2 of the connection portion 3.

[0053] 3, the connection portion 3 and the fixing portion 6 are omitted, but one of the two terminals D2 of the connection portion 3 may correspond to the first terminal 411 in FIG. 3, and the other may correspond to the second terminal 412 in FIG. 3. The first terminal 411 is electrically connected to the first portion 171 of the power supply circuit 17. The second terminal 412 is electrically connected to the second portion 172 of the power supply circuit 17.

[0054] 3, the first portion 171 of the power supply circuit 17 is a connection point with a first terminal 411 in an electric path R1 that connects one pulsating current output terminal of the rectifier circuit 12 and one input terminal of the conversion circuit 14. The second portion 172 of the power supply circuit 17 is a connection point with a second terminal 412 in an electric path R2 that connects the other pulsating current output terminal of the rectifier circuit 12 and the other input terminal of the conversion circuit 14.

[0055] In this embodiment, the connection part 3 has a release hole 33 into which the release pin P1 can be inserted, as shown in Fig. 2B. When the locking spring 320 of the connection part 3 is pressed by the release pin P1, the bite of the connection part 3 is alleviated, and the connected terminal 5 can be pulled out.

[0056] Specifically, the socket D1 has one or more (here, five) release holes 33 on its rear surface. The five release holes 33 are arranged in the left-right direction on the rear surface of the socket D1, in front of the five openings 31, so as to correspond one-to-one with the five openings 31. Each release hole 33 communicates with a corresponding one of the five storage spaces SP1 arranged in the socket D1.

[0057] The release pin P1 may be a part of a release jig. The release jig preferably includes five release pins P1 arranged in a row so as to simultaneously release the restriction mechanisms 32 at five locations. The release jig is preferably configured so that the five release pins P1 are simultaneously inserted into the five release holes 33 in a one-to-one relationship.

[0058] When replacing the limited-life part 4, the worker inserts the release pin P1 through the release hole 33. Then, the tip of the release pin P1 comes into contact with a portion between the center portion 3203 and the second end 3202 of the locking spring 320 housed in the corresponding housing space SP1. When the worker further pushes the release pin P1 forward against the stress from the locking spring 320, the locking spring 320 is elastically deformed with the center portion 3203 as a fulcrum, and the portion from the center portion 3203 to the second end 3202 is displaced forward. As a result, the second end 3202 is released from biting into the male terminal 61, that is, the restriction on the movement of the male terminal 61 in the backward direction is released. With this restriction on movement released, the worker can remove the fixed part 6 (and the capacitor C1) from the connection part 3 by pulling out the male terminal 61 in the backward direction.

[0059] In other words, the method for replacing a limited-life part 4 in the board system 1 includes a release step, a pull-out step, and a connection step. In the release step, the release pin P1 is inserted through the release hole 33 to release the connection terminal 5 from its bite. In the pull-out step, the connection terminal 5 is pulled out in the direction opposite to the insertion direction A1. In the connection step, the fixing part 6 to which another limited-life part 4 is fixed is connected to the printed wiring board 2 via the connection part 3.

[0060] The above replacement work (replacement method) may be performed not only by a person (operator) but also by automation using, for example, a robot arm.

[0061] In short, it can be said that the connection portion 3 has a so-called quick-connect terminal (screwless terminal) structure as the return structure X1.

[0062] (2.1.8) Conversion circuit The conversion circuit 14 has a switching converter circuit such as a flyback converter circuit. The conversion circuit 14 is electrically connected in parallel with a capacitor C1 to a pair of pulsating output terminals of the rectifier circuit 12, and converts the pulsating voltage full-wave rectified by the rectifier circuit 12 into a DC voltage. The conversion circuit 14 applies a DC voltage to the light source 20 via a pair of output terminals T21, T22, and causes a current (forward current) to flow through the light source 20 to light up the light source 20. The conversion circuit 14 may be a switching converter circuit other than a flyback converter circuit.

[0063] (2.1.9) Control circuit The control circuit 15 controls the switching of a semiconductor switching element included in the conversion circuit 14 (switching converter circuit). The control circuit 15 controls the semiconductor switching element by PWM (Pulse Width Modulation), for example, to make the output current of the conversion circuit 14 (the forward current flowing through the light source 20) coincide with a target value.

[0064] (2.2) Light source The light source 20 is turned on by power supplied from the power supply device 10. The light source 20 has a plurality of light-emitting elements. Each of the plurality of light-emitting elements is, for example, a light-emitting diode (LED). The plurality of light-emitting elements may be connected in series, in parallel, or in series-parallel. Note that the plurality of light-emitting elements are not limited to light-emitting diodes, and may be, for example, organic electroluminescence elements.

[0065] (2.3) Circuit Board The board system 1 (circuit board system) includes, for example, one printed wiring board 2 (circuit board). Here, as an example, one or more electronic components B1 constituting each of the transformer 11, the rectifier circuit 12, the conversion circuit 14, and the control circuit 15 are mounted on the single printed wiring board 2. The above-mentioned connection portion 3 is also mounted on the single printed wiring board 2, and the finite-life components 4 are mounted via the connection portion 3. In short, all of the multiple electronic components B1 including the finite-life components 4 are mounted on the single printed wiring board 2. However, the number of printed wiring boards 2 is not limited to one, and may be two or more. The multiple electronic components B1 may be distributed and mounted on two or more printed wiring boards 2.

[0066] (3) Effects In the board system 1 according to the above embodiment, movement in the opposite direction to the insertion direction A1 is restricted by biting into the connected terminals 5. Therefore, it is more likely that the finite-life parts 4 can be replaced more easily than when the finite-life parts 4 are directly soldered to the printed wiring board 2. Also, compared to the configuration of Patent Document 1, restriction of movement of the connected terminals 5 can be achieved with a simpler configuration. As a result, the board system 1 has the advantage of making it easier to replace the finite-life parts 4.

[0067] Moreover, in the board system 1 according to the embodiment, the finite-life part 4 is an aluminum electrolytic capacitor C1. When the aluminum electrolytic capacitor C1 included in the power supply circuit 17 is used for a long period of time, the electrolyte evaporates to the outside through the sealing part, causing deterioration over time such as a decrease in capacitance. From the viewpoint of a circular economy that eliminates waste and circulates resources, it may be possible to continue using the power supply circuit 17 for a longer period of time by replacing only the finite-life part 4 (for example, periodically). In contrast, in the board system 1 according to the embodiment, it is possible to easily realize the replacement of the aluminum electrolytic capacitor C1 (finite-life part 4).

[0068] In particular, in the board system 1 according to the above embodiment, it becomes easier to realize periodic replacement of only the aluminum electrolytic capacitor C1. Note that electronic components B1 other than the aluminum electrolytic capacitor C1 may be replaced as necessary.

[0069] In the board system 1 according to the embodiment, the connected terminals 5 are the male terminals 61 of the fixed portion 6. Therefore, movement can be restricted more stably than when, for example, the lead terminals 41 of the aluminum electrolytic capacitor C1 are directly bitten into by the restricting mechanism 32.

[0070] Moreover, in the board system 1 according to the above embodiment, the connection portion 3 is configured as a detachable socket D1 with the fixing portion 6, and is soldered to the printed wiring board 2. This improves the electrical reliability of the connection portion 3 with respect to the printed wiring board 2, and also enables more stable replacement of the limited-life parts 4.

[0071] Since the power supply device 10 and the lighting device 100 according to the above embodiment include the above-mentioned board system 1, replacement of the finite-life parts 4 can be easily realized.

[0072] (4) Variations The above-described embodiment is merely one of various embodiments of the present disclosure. The above-described embodiment can be modified in various ways depending on the design and the like as long as the object of the present disclosure can be achieved. Below, modifications of the above-described embodiment are listed. The modifications described below can be applied in appropriate combination.

[0073] (4.1) Variation 1 Hereinafter, the substrate system 1 according to this modified example (modified example 1) will be described with reference to Figs. 4 to 6. In the following, regarding the substrate system 1 according to modified example 1, the same reference numerals are used for the configurations that are substantially the same as those of the substrate system 1 according to the above-mentioned embodiment, and the description thereof may be omitted as appropriate. In the following, the directions are defined based on the (non-physical) up / down, left / right, front / rear arrows shown in Figs. 4 to 6. However, the definition of these directions is merely for the purpose of making the description easier to understand, and is not intended to limit the direction in which the substrate system 1 is used.

[0074] In the board system 1 according to the first modification, the fixing part 6 is a second printed wiring board 22 having a male terminal 61, which is separate from the first printed wiring board 21 that is the printed wiring board 2 in the above embodiment. That is, the board system 1 according to the first modification includes (at least) two printed wiring boards (21, 22). The male terminal 61 is a pin-shaped terminal.

[0075] Specifically, one or more (six in this example) male terminals 61 are provided protruding downward on the lower surface (rear surface) of second printed wiring board 22. Three of the six male terminals 61 are arranged in a row near the right edge of the lower surface of second printed wiring board 22, and the remaining three are arranged in a row near the left edge of the lower surface of second printed wiring board 22. The six male terminals 61 are electrically connected to a wiring pattern (conductor pattern) formed on second printed wiring board 22.

[0076] In the example of FIG. 4, second printed wiring board 22 has a smaller mounting area than first printed wiring board 21.

[0077] 4, the aluminum electrolytic capacitor C1 (limited-life component 4) shown in FIG 1 is directly mounted by soldering to the second printed wiring board 22. In addition to the aluminum electrolytic capacitor C1, one or more electronic components B1 are also mounted on the second printed wiring board 22 as the limited-life component 4.

[0078] The multiple electronic components B1 constituting the power supply circuit 17 may include, in addition to the aluminum electrolytic capacitor C1, electronic components that are prone to aging and electronic components that may suddenly fail when used in a special environment (for example, electronic components that may be damaged when a surge voltage is applied). In the first modification, such electronic components B1 are also treated as limited-life components 4, like the aluminum electrolytic capacitor C1, and are mounted on the second printed wiring board 22 so that they can be periodically replaced together with the aluminum electrolytic capacitor C1.

[0079] In short, of the multiple electronic components B1 (constituting the power supply circuit 17), multiple limited-life components 4 including the limited-life component 4 (aluminum electrolytic capacitor C1) are mounted on the second printed wiring board 22.

[0080] Among the multiple electronic components B1 constituting the power supply circuit 17, the remaining electronic components B1 other than the multiple finite-life components 4 including the aluminum electrolytic capacitor C1 are mounted on the first printed wiring board 21.

[0081] In the substrate system 1 according to the first modification, the connection unit 3 is configured as a connection block E1 to which the second printed wiring board 22 can be detached. The connection block E1 is soldered to the first printed wiring board 21.

[0082] The connection block E1 is formed in a rectangular block shape. The connection block E1 has one or more (six in this case) openings 31 on its upper surface. The six openings 31 are arranged so that the six male terminals 61 of the second printed wiring board 22 are inserted one-to-one into each of them. The connection block E1 also has one or more (six in this case) release holes 33 (see FIG. 4) on its upper surface, similar to the socket D1 of the board system 1 according to the above-mentioned embodiment. The six release holes 33 may be provided in two left and right rows, three on each side, outside the two left and right rows of openings 31. Hereinafter, the openings 31 in the left row may be referred to as openings 31A, and the openings 31 in the right row may be referred to as openings 31B. The release holes 33 in the left row may be referred to as release holes 33A, and the release holes 33 in the right row may be referred to as release holes 33B.

[0083] The connection block E1 has six accommodation spaces SP1 (see FIG. 5) therein, facing the six openings 31, respectively. Fig. 5 is a cross-sectional view of the main parts (with some parts not shown) of the connection block E1 and the second printed wiring board 22, showing the front openings 31A, 31B and the release holes 33A, 33B in Fig. 4. A restriction mechanism 32 (see FIG. 5) having a burr structure X1 is accommodated in each accommodation space SP1.

[0084] 5, the left opening 31A and release hole 33A and the right opening 31B and release hole 33B are arranged symmetrically to each other. Accordingly, the left locking spring 320 and fixed terminal 321 and the right locking spring 320 and fixed terminal 321 are accommodated in the accommodation space SP1 so as to be symmetrical to each other.

[0085] Six terminals are provided on the rear surface of the connection block E1, and the fixed terminals 321 (see FIG. 5) of the six restriction mechanisms 32 are electrically connected to the six terminals, respectively.

[0086] Six terminals on the back surface of the connection block E1 are inserted into six predetermined through holes from the front surface 2A (upper surface) side of the first printed wiring board 21 and soldered to the back surface side of the first printed wiring board 21.

[0087] By connecting such second printed wiring board 22 to connection block E1, a plurality of finite-life parts 4 including aluminum electrolytic capacitor C1 mounted on second printed wiring board 22 are electrically connected to first printed wiring board 21. As a result, power supply circuit 17 is configured by the plurality of finite-life parts 4 including aluminum electrolytic capacitor C1 mounted on second printed wiring board 22 and the remaining electronic components B1 mounted on first printed wiring board 21.

[0088] FIG. 6 shows a release jig 8 applied to the board system 1 according to the first modification. As shown in FIG. 6, the jig 8 includes a rectangular plate-like main body P0 and a plurality of (six in this case) release pins P1 held by the main body P0. That is, the jig 8 includes two rows of three release pins P1 each (six in total) so that the six restriction mechanisms 32 can be released simultaneously. The jig 8 is configured so that the six release pins P1 are inserted one-to-one into the six release holes at the same time. Hereinafter, the release pins P1 in the left row may be referred to as release pins P11, and the release pins P1 in the right row may be referred to as release pins P12.

[0089] The replacement work of the second printed wiring board 22 will be described. The worker brings the jig 8 close to the connection block E1 so as to cover the second printed wiring board 22 from above with the jig 8. Then, the worker inserts the six release pins P1 into the six release holes 33 at approximately the same time. That is, the release pins P11 in the left row are inserted into the release holes 33A in the left row, and at the same time, the release pins P12 in the right row are inserted into the release holes 33B in the right row. Then, the worker can remove the second printed wiring board 22 from the connection block E1 by lifting the second printed wiring board 22 together with the jig 8 up. The worker connects the second printed wiring board 22 on which the new limited-life part 4 is mounted to the connection block E1, thereby completing the replacement work.

[0090] The above replacement work may be performed not only by a person (operator) but also by automation using, for example, a robot arm.

[0091] The board system 1 according to the first modification also makes it easy to replace the finite-life parts 4. In particular, by replacing the second printed wiring board 22, it becomes possible to replace a plurality of finite-life parts 4 collectively, for example, periodically.

[0092] (4.2) Variation 2 Hereinafter, the board system 1 according to this modification (modification 2) will be described with reference to Figures 7A and 7B. In the following, regarding the board system 1 according to modification 2, the configurations that are substantially the same as those of the board system 1 according to the above-mentioned embodiment will be given the same reference symbols, and the description thereof may be omitted as appropriate. Note that, in the following description, the direction perpendicular to the printed wiring board 2 (surface 2A) is defined as the up-down direction.

[0093] In the board system 1 according to the second modification, the restriction mechanism 32 of the connection portion 3 has a metal plate 7 in which a through hole H1 is provided as the opening 31. In the second modification, the metal plate 7 (restriction mechanism 32) is not housed in a case or the like like the socket D1 of the above embodiment, but is provided directly on the printed wiring board 2 in an exposed state.

[0094] In addition, in the board system 1 according to the second modification, the connected terminals 5 are lead terminals 41 of the finite-life part 4 (again, the capacitor C1 is used as an example here). That is, the finite-life part 4 is physically and electrically connected directly to the connection part 3 without going through the fixing part 6 of the above-described embodiment.

[0095] The connection part 3 has one or more metal plates 7 (restriction mechanisms 32). Here, the connection part 3 has two metal plates 7 (restriction mechanisms 32) to match the number of lead terminals 41. For convenience, Fig. 7A shows a top view of only one of the two metal plates 7. Fig. 7B is a cross-sectional view of line AA in Fig. 7A.

[0096] Each metal plate 7 is formed in a rectangular plate shape. Metal plate 7 is soldered to printed wiring board 2. Metal plate 7 is mounted on front surface 2A of printed wiring board 2, and is electrically connected to a wiring pattern (conductor pattern) formed on printed wiring board 2.

[0097] The metal plate 7 has a plurality of (six in this example) metal protrusions 71 arranged along the circumferential direction of the through hole H1 so as to protrude toward the through hole H1 (opening 31).

[0098] In the example of FIG. 7A, six holes 73 are formed in the metal plate 7 so as to correspond to the six vertices of the regular hexagonal region. Each hole 73 opens in a substantially circular shape. Six slit-shaped holes 72 are formed extending from the six holes 73 toward the center of the regular hexagonal region. The through hole H1 (opening 31) is disposed in the center of the regular hexagonal region. In other words, the through hole H1 (opening 31) and the six holes 73 communicate with each other through the six holes 72. In other words, the through hole H1 (opening 31) and the six slit-shaped holes 72 are formed, and thus six metal protrusions 71 protruding toward the through hole H1 (opening 31) are provided. Each metal protrusion 71 is formed, for example, in a triangular plate shape in front view as shown in FIG. 7A. As a result, the through hole H1 (opening 31) is surrounded by the tips (vertices) of the six metal protrusions 71.

[0099] The multiple (six) metal protrusions 71 come into contact with the lead terminal 41 (of the limited-life component 4) inserted into the through hole H1 in such a manner that their tips bite into it. Here, the opening area of ​​the through hole H1 is designed to be slightly smaller than the diameter of the lead terminal 41 when viewed in a direction (up-down direction) perpendicular to the printed wiring board 2. Therefore, in order to insert the lead terminal 41 into the through hole H1, the tips of the six metal protrusions 71 are elastically deformed by the tip of the lead terminal 41 to push them downward, thereby widening the opening area of ​​the through hole H1.

[0100] Here, the regular hexagonal region of the metal plate 7 is arranged so as to overlap with a hole 2C (see FIG. 7B) provided in the printed wiring board 2 when viewed in the vertical direction. The hole 2C may be one of many through holes provided in the printed wiring board 2, or may be a through hole provided separately from the through holes. When viewed in the vertical direction, the opening area of ​​the hole 2C is, for example, larger than the opening area of ​​the through hole H1 and smaller than the regular hexagonal region. The lead terminal 41 inserted into the through hole H1 from the front surface 2A side of the printed wiring board 2 also passes through the hole 2C of the printed wiring board 2 and protrudes to the back surface 2B side of the printed wiring board 2 (see FIG. 7B).

[0101] In this modification, each metal projection 71 has a burr structure X1 that curves back near its tip toward the insertion direction A1.

[0102] 7B, when the lead terminal 41 is inserted from the through hole H1 (opening 31) in the insertion direction A1, it comes into contact with the tips of the six metal protrusions 71. When the lead terminal 41 is further pushed downward against the stress from the six metal protrusions 71, the six metal protrusions 71 are elastically deformed and their tips are displaced downward, allowing the lead terminal 41 to enter. As a result, the lead terminal 41 comes into contact with the six metal protrusions 71 while being pressed by the elastic restoring force, and a physical and electrical connection between the lead terminal 41 and the metal plate 7 is achieved.

[0103] Here, since each metal protrusion 71 has the burr structure X1, each metal protrusion 71 is configured to bite into the surface 410 (outer peripheral surface) of the lead terminal 41, and movement of the lead terminal 41 in the direction opposite to the insertion direction A1 (upward movement) is restricted. This prevents the connection between the lead terminal 41 and the metal plate 7 from being unintentionally released. As a result, electrical reliability is improved.

[0104] In this way, the two lead terminals 41 of the capacitor C1 are electrically connected to the two metal plates 7 via the multiple metal protrusions 71, and are electrically connected to the wiring pattern (conductor pattern) formed on the printed wiring board 2 via the two metal plates 7. In terms of Fig. 3, one of the two metal plates 7 may correspond to the first terminal 411 in Fig. 3, and the other may correspond to the second terminal 412 in Fig. 3.

[0105] Next, a description will be given of a method for replacing the limited-life part 4 in the board system 1 according to the modified example 2. The replacement method includes a cutting step, a removing step, and a connecting step.

[0106] In the cutting step, the lead terminal 41 is cut between the opening 31 (through hole H1) and the body 40 (see FIG. 1) of the finite-life part 4. Specifically, when replacing the finite-life part 4 connected to the metal plate 7, the worker cuts the lead terminal 41 at the position indicated by the dashed dotted line G1 in FIG. 7B with a tool such as a cutter or nippers.

[0107] In the removing step, the end of the lead terminal 41 separated from the main body 40 in the cutting step is removed by pulling it out in the insertion direction A1. For example, the worker pinches the tip of the end of the lead terminal 41 below the position indicated by the dashed dotted line G1 in Fig. 7B, which protrudes toward the back surface 2B of the printed wiring board 2, with his / her fingertips or a tool such as needle-nose pliers, and pulls it out along the insertion direction A1. The separated main body 40 is removed from the front surface 2A side of the printed wiring board 2.

[0108] In the connecting step, another finite-life part 4 is connected to the printed wiring board 2 via the connecting portion 3. The worker connects the lead terminals 41 of the new, different finite-life part 4 to the metal plate 7 again.

[0109] The above replacement work (replacement method) may be performed not only by a person (operator) but also by automation using, for example, a robot arm.

[0110] In this way, the substrate system 1 and replacement method according to Modification 2 also facilitate replacement of the finite-life parts 4. In particular, the replacement method according to Modification 2 makes it possible to easily remove the finite-life parts 4 that are no longer needed from the connection parts 3 by destroying (cutting) them.

[0111] Furthermore, in the substrate system 1 of variant example 2, the connected terminal 5 is the lead terminal 41 of the finite-life part 4, so that the increase in the number of parts can be suppressed compared to, for example, the case where the fixed part 6 in the above embodiment is provided.

[0112] Furthermore, in the substrate system 1 relating to variant example 2, the multiple metal protrusions 71 come into contact with the lead terminal 41 inserted into the through hole H1 in a manner in which their tips bite into the lead terminal 41, thereby achieving a more stable bite of the regulating mechanism 32 into the lead terminal 41.

[0113] (4.3) Variation 3 Hereinafter, the board system 1 according to this modified example (modified example 3) will be described with reference to Fig. 8. In the following, regarding the board system 1 according to modified example 3, the configurations that are substantially the same as those of the board system 1 according to modified example 2 described above will be denoted by the same reference symbols, and the description thereof may be omitted as appropriate.

[0114] Modification 3 is another example of modification 2. In the substrate system 1 according to modification 3, a conductive protective layer F1 (see FIG. 8) is provided on the surface 410 of the lead terminal 41. As an example, the protective layer F1 is a solder layer. That is, the lead terminal 41 of the finite-life part 4 is reinforced in strength by providing the protective layer F1.

[0115] The substrate system 1 according to the third modification can reduce the possibility that the surface 410 of the lead terminal 41 is damaged by the bite of the metal protrusions 71 (the restriction mechanism 32). Also, the possibility that the lead terminal 41 is deformed due to the stress of the "burr structure X1" can be reduced. As a result, electrical reliability is improved.

[0116] (4.4) Other Modifications In the above embodiment, the finite life part 4 is the aluminum electrolytic capacitor C1, but the finite life part 4 may be any part that has a life and is included in the plurality of electronic components B1 that constitute the power supply circuit 17. In other words, the finite life part 4 is not limited to the aluminum electrolytic capacitor C1, and may be, for example, a film capacitor or a coil that constitutes the power supply circuit 17.

[0117] In the above embodiment, the aluminum electrolytic capacitor C1, which is the finite life component 4, is a lead component (DIP component), but the finite life component 4 is not limited to a lead component and may be a chip component. In this case, the fixing portion 6 may be configured to fix the finite life component 4, which is a chip component.

[0118] In the above-described embodiment, the fixing portion 6 is not essential, and for example, the lead terminal 41 (connected terminal 5) of the limited-life part 4 may be inserted from the opening 31 of the socket D1 (connecting portion 3) and bitten into the locking spring 320. In this case, it is preferable to provide the protective layer F1 of the third modification on the surface 410 of the lead terminal 41.

[0119] In the above-mentioned modified example 2, the lead terminal 41 of the finite-life part 4 may be fixed to the fixed portion 6, and the male terminal 61 (connected terminal 5) of the fixed portion 6 may be inserted from the through-hole H1 (opening 31) of the metal plate 7 and bitten into the multiple metal protrusions 71. In this case, however, when the finite-life part 4 is replaced, the male terminal 61 may need to be cut.

[0120] (Aspect) The above-described embodiments and the like disclose the following aspects.

[0121] The board system (1) according to the first aspect includes a plurality of electronic components (B1), a printed wiring board (2), and a connection section (3). The plurality of electronic components (B1) includes a finite-life component (4). The plurality of electronic components (B1) constitute a power supply circuit (17). At least a portion of the plurality of electronic components (B1) is mounted on the printed wiring board (2). The connection section (3) is provided on the printed wiring board (2) and performs both mechanical and electrical connection between the printed wiring board (2) and a connected terminal (5) on the finite-life component (4) side. The connection section (3) has an opening (31) into which the connected terminal (5) is inserted, and a regulating mechanism (32) having a return structure (X1). The regulating mechanism (32) comes into contact with the connected terminal (5) inserted into the opening (31) in a bite-in manner, and regulates the movement of the connected terminal (5) in a direction opposite to the insertion direction (A1) into the opening (31).

[0122] According to the above embodiment, because movement in the opposite direction to the insertion direction (A1) is restricted by biting into the connected terminal (5), it is more likely that the finite-life part (4) can be replaced more easily than when the finite-life part (4) is directly soldered to the printed wiring board (2), for example. Also, compared to the configuration of Patent Document 1, the restriction of movement can be achieved with a simpler configuration. As a result, the board system (1) has the advantage that it is easier to replace the finite-life part (4).

[0123] Regarding the substrate system (1) according to the second embodiment, in the first embodiment, the finite-life part (4) is an aluminum electrolytic capacitor (C1), a film capacitor, or a coil.

[0124] According to the above embodiment, it is possible to easily realize replacement of the aluminum electrolytic capacitor (C1), the film capacitor, or the coil.

[0125] The substrate system (1) according to the third aspect is the substrate system (1) according to the first or second aspect, and further includes a fixing part (6). The fixing part (6) has a male terminal (61). The fixing part (6) fixes the lead terminal (41) of the finite-life part (4) so ​​that the lead terminal (41) is electrically connected to the male terminal (61). The connected terminal (5) is the male terminal (61).

[0126] According to the above embodiment, movement of the lead terminal (41) can be restricted more stably than when the lead terminal (41) is directly pinched by the restricting mechanism (32).

[0127] Regarding the board system (1) according to the fourth aspect, in the third aspect, the connection part (3) is configured as a socket (D1) to which the fixing part (6) is detachable. The socket (D1) is soldered to the printed wiring board (2).

[0128] According to the above embodiment, the electrical reliability of the connection portion (3) to the printed wiring board (2) is improved, and more stable replacement of the finite-life part (4) can be achieved.

[0129] In the third aspect of the fifth aspect of the substrate system (1), the fixing part (6) is a second printed wiring board (22) having a male terminal (61) separate from the first printed wiring board (21) which is the printed wiring board (2). A plurality of finite-life parts (4) including a finite-life part (4) among the plurality of electronic components (B1) are mounted on the second printed wiring board (22).

[0130] According to the above embodiment, by replacing the second printed wiring board (22), it becomes possible to replace a plurality of finite-life parts (4) collectively.

[0131] In the fifth embodiment of the circuit board system (1) according to the sixth embodiment, the connection portion (3) is configured as a connection block (E1) to which the second printed wiring board (22) is detachably attached. The connection block (E1) is soldered to the first printed wiring board (21).

[0132] According to the above embodiment, the electrical reliability of the connection portion (3) to the first printed wiring board (21) is improved, and more stable replacement of the multiple limited-life parts (4) can be achieved.

[0133] Regarding the board system (1) according to the seventh aspect, in any one of the first to sixth aspects, the connection part (3) has a release hole (33) into which the release pin (P1) can be inserted. The restriction mechanism (32) has a locking spring (320) that bites into the connected terminal (5) at its tip. When the locking spring (320) is pressed by the release pin (P1), the bite of the connection part (3) is alleviated, making it possible to pull out the connected terminal (5).

[0134] According to the above embodiment, it is highly possible that the finite-life part (4) can be replaced more easily.

[0135] Regarding the board system (1) according to the eighth aspect, in the first or second aspect, the connected terminal (5) is a lead terminal (41) of the finite-life part (4).

[0136] According to the above aspect, for example, compared to a case in which the fixing portion (6) is provided, an increase in the number of parts can be suppressed.

[0137] Regarding the substrate system (1) according to the ninth aspect, in the eighth aspect, a conductive protective layer (F1) is provided on the surface (410) of the lead terminal (41).

[0138] According to the above embodiment, the possibility that the surface (410) of the lead terminal (41) will be damaged due to biting by the restricting mechanism (32) can be reduced.

[0139] Regarding the board system (1) according to the tenth aspect, in the eighth or ninth aspect, the restriction mechanism (32) has a metal plate (7) having a through hole (H1) formed as the opening (31). The metal plate (7) is soldered to the printed wiring board (2). The metal plate (7) has a plurality of metal protrusions (71) arranged along the circumferential direction of the through hole (H1) so as to protrude toward the through hole (H1). The plurality of metal protrusions (71) contact the lead terminal (41) inserted into the through hole (H1) in such a manner that their tips bite into the lead terminal (41).

[0140] According to the above embodiment, the restriction mechanism (32) can be more stably engaged with the lead terminal (41).

[0141] A power supply device (10) according to an eleventh aspect includes the substrate system (1) according to any one of the first to tenth aspects and a case (10A). The case (10A) houses the substrate system (1).

[0142] According to the above aspect, it is possible to provide a power supply device (10) in which replacement of the finite-life part (4) can be easily realized.

[0143] A lighting device (100) according to a twelfth aspect includes the power supply device (10) according to the eleventh aspect and a light source (20). The light source (20) is turned on by power supplied from the power supply device (10).

[0144] According to the above aspect, it is possible to provide a lighting device (100) in which replacement of the finite-life part (4) can be easily realized.

[0145] A replacement method according to a thirteenth aspect is a method for replacing a finite-life part (4) in a board system (1) in any one of the eighth to tenth aspects. The replacement method includes a cutting step, a removing step, and a connecting step. In the cutting step, the lead terminal (41) is cut between the opening (31) and the body (40) of the finite-life part (4). In the removing step, the cut end of the lead terminal (41) separated from the body (40) in the cutting step is pulled out in the insertion direction (A1) and removed. In the connecting step, another finite-life part (4) is connected to the printed wiring board (2) via the connecting portion (3).

[0146] According to the above aspect, it is possible to provide a method for easily replacing the finite-life part (4). [Explanation of symbols]

[0147] 1 Board System 2. Printed Wiring Board 20 light source 21 First printed wiring board 22 Second printed wiring board 3 Connection 31 Aperture 32 Regulatory Mechanisms 320 Locking spring 33 Release hole 4 Limited life parts 40 Main unit 41 Lead terminal 410 Surface 5 Connected terminal 6 Fixed part 61 Male terminal 7 metal plate 71 Metal protrusion 10 Power supply 10A Case 17 Power circuit 100 Lighting Equipment A1 Insertion direction B1 Electronic Components C1 Aluminum electrolytic capacitor D1 Socket E1 Connection Block F1 protective layer H1 through hole P1 Release pin X1 Burr structure

Claims

1. A plurality of electronic components including a finite-life component and constituting a power supply circuit; a printed wiring board on which at least some of the electronic components are mounted; a connection portion provided on the printed wiring board for performing both mechanical and electrical connection between the printed wiring board and the connected terminal of the limited-life component; Equipped with The connection portion is an opening into which the connection terminal is inserted; A regulating mechanism having a return structure, the restricting mechanism comes into contact with the connection terminal inserted into the opening in a bite-wise manner to restrict movement of the connection terminal in a direction opposite to an insertion direction into the opening. Substrate system.

2. The finite-life part is an aluminum electrolytic capacitor, a film capacitor, or a coil. The substrate system of claim 1 .

3. a fixing portion having a male terminal and fixing the lead terminal so that the lead terminal of the finite-life part is electrically connected to the male terminal; The connected terminal is the male terminal. The substrate system of claim 1 .

4. The connection portion is configured as a socket to which the fixing portion can be detached, The socket is soldered to the printed wiring board. The substrate system according to claim 3 .

5. the fixing portion is a second printed wiring board having the male terminal and separate from the first printed wiring board, a plurality of finite-life parts including the finite-life part among the plurality of electronic components are mounted on the second printed wiring board; The substrate system according to claim 3 .

6. the connection portion is configured as a connection block to which the second printed wiring board can be detached, the connection block is soldered to the first printed wiring board; The substrate system according to claim 5 .

7. The connection portion has a release hole into which a release pin can be inserted, The restriction mechanism has a locking spring that bites into the connection terminal at a tip end, When the locking spring is pressed by the release pin, the bite of the connection portion is alleviated, making it possible to pull out the connected terminal. The substrate system of claim 1 .

8. The connected terminal is a lead terminal of the part with a limited life. The substrate system of claim 1 .

9. A conductive protective layer is provided on the surface of the lead terminal. The substrate system according to claim 8 .

10. the restriction mechanism includes a metal plate having a through hole formed as the opening, the metal plate is soldered to the printed wiring board and has a plurality of metal projections arranged along a circumferential direction of the through hole so as to protrude toward the through hole; the plurality of metal projections are in contact with the lead terminals inserted into the through holes in such a manner that their tips bite into the lead terminals. The substrate system according to claim 8 .

11. A substrate system according to any one of claims 1 to 10; a case for housing the substrate system; Equipped with power supply.

12. A power supply device according to claim 11; a light source that is turned on by power supplied from the power supply device; Equipped with Lighting equipment.

13. A method for replacing a limited-life part in a substrate system according to any one of claims 8 to 10, comprising the steps of: a cutting step of cutting the lead terminal between the opening and the main body of the life-limited part; a removing step of removing the cut end of the lead terminal separated from the main body in the cutting step by pulling it out in the insertion direction; a connecting step of connecting another of the limited-life parts to the printed wiring board via the connecting portion; Including, Exchange method.

Images