JP2016076618A - Circuit board and electrical equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circuit board, etc. that can reduce a load imposed on the connection portion between a board and an electrical wire with a little space.SOLUTION: A circuit board 16 has a substrate 16a having an opening on which a circuit component 25 is mounted, and an electrical wire 21a which passes through the opening and through which an end portion 23a is connected to the substrate 16a. The electrical wire 21a is provided with a large-diameter portion 22a having a larger diameter than the opening in an area from the end portion 23a to the opening.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a circuit board and an electric device using the circuit board.

  In order to supply electric power from the outside to a circuit board provided inside the electric device, a configuration in which a lead wire connected to the circuit board is drawn out of the electric device is known. In such a configuration, a tension stopper structure has been proposed that relieves the load on the connection portion between the substrate and the lead wire when tension is applied to the lead wire (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 2-2787

  In the tension stop structure described in Patent Document 1, it is necessary to insert one lead wire (electric wire) into an S-shape through a plurality of through holes, and there is a problem that the space required for the tension stop structure is large. It is.

  The present invention provides a circuit board or the like that can reduce a load on a connection portion between a board and an electric wire in a small space.

  A circuit board according to an aspect of the present invention includes a board on which circuit components are mounted and an opening is provided, and an electric wire that passes through the opening and has an end connected to the board. A large-diameter portion having a diameter larger than that of the opening is provided between the end portion and the opening.

  The circuit board according to one embodiment of the present invention can reduce a load on a connection portion between the board and the electric wire in a small space.

FIG. 1 is an external perspective view of an illumination light source including the circuit board according to the first embodiment as viewed from above. FIG. 2 is an external perspective view of the illumination light source including the circuit board according to Embodiment 1 as viewed from below. FIG. 3 is an exploded perspective view of an illumination light source including the circuit board according to the first embodiment. FIG. 4 is an external perspective view of the circuit board according to the first embodiment. FIG. 5 is an external perspective view of the circuit board according to Embodiment 1 with the electric wires removed. FIG. 6 is a cross-sectional view of the vicinity of the opening of the circuit board according to the first embodiment. FIG. 7 is an external perspective view of the housing. FIG. 8 is a cross-sectional view for explaining an example in which one large diameter portion is provided across two electric wires. FIG. 9 is a cross-sectional view for explaining an example in which two large diameter portions are provided in one electric wire. FIG. 10 is a perspective view of the lighting apparatus according to Embodiment 2. FIG. FIG. 11 is a perspective view of another illumination device according to Embodiment 2. FIG.

  Hereinafter, embodiments will be specifically described with reference to the drawings. It should be noted that each of the embodiments described below shows a comprehensive or specific example. The numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of the constituent elements, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements.

  Each figure is a schematic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected to the substantially same structure, and the overlapping description may be abbreviate | omitted or simplified.

(Embodiment 1)
[Constitution]
Hereinafter, the configuration of the circuit board according to the first embodiment and the illumination light source including the circuit board will be described with reference to FIGS. FIG. 1 is an external perspective view of an illumination light source including the circuit board according to the first embodiment as viewed from above. FIG. 2 is an external perspective view of the illumination light source including the circuit board according to Embodiment 1 as viewed from below. FIG. 3 is an exploded perspective view of an illumination light source including the circuit board according to the first embodiment. In addition, in FIG. 3, illustration is abbreviate | omitted about fixing members, such as a screw which fixes members.

  As illustrated in FIGS. 1 to 3, the illumination light source 10 is an illumination light source used in an illumination device such as a downlight or a spotlight, and is an example of an electrical apparatus. The illumination light source 10 includes a translucent panel 11, a housing 12, a base 13, a reflection member 14, a seal member 15, a circuit board 16, a light emitting module 17, a test seal member 18a, An electric wire sealing member 18b, a sealing member 19, and electric wires 21a and 21b are provided.

  The translucent panel 11 is an optical member made of a translucent material to extract light emitted from the light emitting module 17 to the outside. Specifically, the translucent panel 11 is a cap-shaped (lid-shaped) optical member, and a planar view shape (a shape viewed from the Z axis + side) is a circle partially cut away from the outer peripheral side. Shape (substantially circular shape).

  The translucent panel 11 may have specific optical characteristics such as functioning as a Fresnel lens. Further, the translucent panel 11 may be provided with dimples for suppressing unevenness of light emitted from the translucent panel 11. In this case, the dimples are provided, for example, on the light emission side surface (light emission surface) of the translucent panel 11.

  Three screw holes 11b through which fixing screws (not shown) for fixing the translucent panel 11, the housing 12, and the base 13 are collectively inserted are provided at the peripheral portion of the light emitting surface of the translucent panel 11. Provided. Further, three groove portions 11 d are provided on the side surface (side portion) of the translucent panel 11. The groove part 11d forms a groove extending in the Z-axis direction together with a groove part 12f described later. The formed groove is a groove for connecting the illumination light source 10 to the illumination device by a connection screw (not shown).

  The translucent panel 11 is arrange | positioned at the light-projection side of the housing | casing 12 so that the output port of the reflection member 14 may be block | closed. Moreover, the translucent panel 11 is arrange | positioned in the direction in which the light emitting module 17 emits light, and the translucent panel 11 and the light emission part 17b oppose. The translucent panel 11 is formed of a resin material such as acrylic (PMMA) or polycarbonate (PC).

  The translucent panel 11 may have a transparent structure without light diffusibility or a diffusion structure with light diffusibility. For example, a translucent panel having a light diffusing function by forming a milky white light diffusing film by applying a resin or white pigment containing a light diffusing material such as silica or calcium carbonate to the inner surface of the translucent panel 11 11 can be configured. Further, by forming minute irregularities on the translucent panel 11, the translucent panel 11 having a light diffusion function can be configured.

  The housing 12 is a substantially cylindrical member that houses the light emitting module 17 and the circuit board 16. The housing 12 has a first opening formed on the light emitting side and a second opening formed on the side opposite to the light emitting side. The entrance portion of the reflecting member 14 is disposed in the first opening, and the base 13 is disposed in the second opening.

  Three fixing portions 12 a (bosses) having screw holes 12 b are provided on the inner surface of the housing 12. A fixing screw is inserted into the screw hole 12b. The outer surface of the housing 12 is provided with three groove portions 12f that form grooves together with the above-described groove portion 11d.

  Three positioning notches 12h into which the fixing portion 13a of the base 13 is fitted are provided at the end of the side of the housing 12 on the Z-axis side. The notch 12 h is a positioning structure of the base 13 with respect to the housing 12 provided in the housing 12. The end is also provided with a notch 12i for passing the electric wires 21a and 21b that electrically connect the circuit board 16 and the external power source.

  The casing 12 is made of an insulating resin material such as PBT (polybutylene terephthalate). The housing 12 may be made of metal instead of resin.

  In addition, the external shape when each of the reflecting member 14, the sealing member 15, and the circuit board 16 (the board 16a) described below is viewed in plan is a shape that is cut out according to the fixing part 12a and the groove part 12f. .

  The base 13 has a column 13d protruding to the Z axis + side, and the column 13d supports the light emitting module 17 from the rear when the light emitting module 17 emits light forward. Thereby, the base 13 is a member that also functions as a heat sink that dissipates heat generated in the light emitting module 17, and is a substantially circular plate-like member except for the fixing portion 13 a and the support column 13 d.

  Three fixing portions 13 a having screw holes 13 b are provided on the peripheral portion of the main surface on the Z axis + side of the base 13. The inner peripheral surface of the screw hole 13b is threaded corresponding to the fixing screw. The fixed portion 13a is a convex portion that protrudes to the Z axis + side from the main surface on the Z axis + side, and is fitted into the notch 12h.

  Three connection holes 13c through which connection screws for connecting the illumination light source 10 to the illumination device are inserted are provided in the peripheral portion of the base 13. In addition, a notch 13e for passing the electric wires 21a and 21b for electrically connecting the circuit board 16 and an external power source is provided at the end of the base 13.

  Specifically, the base 13 is made of a metal material such as aluminum or a resin material having high thermal conductivity.

  The reflection member 14 is a member having a reflection function, and includes an incident port that is an opening through which light from the light emitting module 17 is incident and an output port that is an opening through which light incident from the incident port is emitted. The reflecting member 14 is a cylindrical member configured such that the inner diameter gradually increases from the entrance to the exit.

  The entrance portion of the reflecting member 14 is configured to surround the light emitting portion 17 b of the light emitting module 17. In addition, the shape of the emission port is a shape corresponding to the shape of the light emission surface (surface on the Z axis + side) of the translucent panel 11.

  The inner surface of the reflecting member 14 is a reflecting surface that reflects light emitted from the light emitting module 17. The reflecting surface is configured to reflect light incident from the incident port and output from the output port. That is, the light emitted from the light emitting module 17 by the reflecting member 14 is guided to the translucent panel 11. The reflection member 14 is attached to the housing 12.

  The reflecting member 14 is made of, for example, a hard white resin material having insulating properties. In order to improve the appearance of the reflecting surface or to control the light distribution of the illumination light source 10, the inner surface of the resin-made reflecting member 14 is a metal vapor-deposited film (metal reflecting film) made of a metal material such as silver or aluminum. ). Moreover, the reflecting member 14 may be formed using a metal material having a higher reflectance than a resin material such as aluminum.

  The seal member 15 is a deformed ring-shaped resin member (rubber, elastomer, etc.) having elasticity. The seal member 15 is sandwiched between the translucent panel 11 and the housing 12. Specifically, the sealing member 15 is configured such that the fixing screw is tightened to fix the translucent panel 11 and the housing 12, so that the end surface of the translucent panel 11 and the first opening of the housing 12 are fixed. It is sandwiched between the side end faces. That is, the sealing member 15 seals between the end surface of the translucent panel 11 and the end surface of the housing 12 on the first opening side.

  Further, the seal member 15 surrounds the reflection member 14 from the outside, and the inner peripheral surface abuts on the outer surface of the reflection member 14. The reflection member 14 functions as a guide (positioning structure) for disposing the seal member 15 between the end surface of the translucent panel 11 and the end surface of the housing 12 on the first opening side.

  The circuit board 16 includes a board 16a, a circuit component 25 mounted on the board 16a, and electric wires 21a and 21b.

  The board | substrate 16a is an annular | circular shaped (doughnut shape) board | substrate partly notched from the outer peripheral side. The substrate 16 a is fixed to the inside of the housing 12 by a locking claw (not shown) provided on the housing 12. The substrate 16 a is disposed inside the housing 12 and outside the reflecting member 14.

  The substrate 16a is a so-called printed substrate on which metal wiring is patterned, and a ceramic substrate, a resin substrate, a metal base substrate, or the like is used as the substrate 16a.

  A circuit component 25 constituting a drive circuit for causing the light emitting module 17 (light emitting unit 17b) to emit light is provided on the substrate 16a. Note that the power supplied to the drive circuit (circuit board 16) may be DC power or AC power. When AC power is supplied to the drive circuit, the drive circuit includes a power supply circuit that converts AC power supplied from an external power source into DC power.

  The circuit component 25 is, for example, a capacitance element such as an electrolytic capacitor or a ceramic capacitor, a resistance element, a coil element, a choke coil (choke transformer), a semiconductor element such as a noise filter, a diode, or an integrated circuit element.

  The electric wires 21a and 21b are so-called lead wires, and are power supply wires for supplying electric power from the outside of the illumination light source 10 to the drive circuit (circuit board 16). The electric wires 21a and 21b are inserted through the electric wire sealing member 18b, and then drawn out from the opening formed by the notches 12i and 13e.

  The circuit board 16 is characterized in that the electric wire 21a is provided with a large diameter portion 22a and the electric wire 21b is provided with a large diameter portion 22b. Details of the characteristics of the circuit board 16 will be described later.

  The light emitting module 17 is a light emitting device that emits light of a predetermined color (wavelength) such as white by electric power supplied from a drive circuit mounted on the substrate 16a. The light emitted from the light emitting module 17 passes through the translucent panel 11 and is emitted to the outside of the illumination light source 10. The circuit board 16 and the light emitting module 17 are electrically connected by a cable having a connector at an end.

  The holder 17a is a resin member that holds the light emitting portion 17b. The light emitting module 17 is attached to the base 13 by screwing the holder 17a to the support 13d.

  The light emitting part 17b is a light emitting part having a COB (Chip On Board) structure in which an LED (light emitting element) is directly mounted on a substrate and the LED is sealed by a sealing member. Although not shown, the lower surface of the substrate of the light emitting unit 17b is exposed from the holder 17a and comes into contact with the column 13d of the base 13.

  The inspection seal member 18 a is a seal member that closes an airtight inspection opening provided on the bottom surface of the illumination light source 10. The inspection seal member 18a is formed of an elastic resin member (rubber, elastomer, etc.).

  The electric wire sealing member 18b is a sealing member into which the electric wires 21a and 21b are inserted. The wire sealing member 18b seals between the wire sealing member 18b and the wires 21a and 21b and between the wire sealing member 18b and the housing 12. The wire sealing member 18b is formed of an elastic resin member (rubber, elastomer, etc.).

  The seal member 19 is a so-called O-ring, and is sandwiched between the base 13 and the housing 12, and the housing 12 and the base 13 are fixed by fixing screws, so that the housing 12 and the base 13 is sealed. The seal member 19 is formed of an elastic resin member (rubber, elastomer, etc.).

[Feature structure]
The circuit board 16, which is a characteristic configuration of the illumination light source 10 as described above, will be described in detail. 4 and 5 are external perspective views of the circuit board 16. FIG. 5 illustrates the circuit board 16 with the electric wires 21a and 21b removed.

  As shown in FIGS. 4 and 5, the circuit component 25 is mounted on the substrate 16a, and openings 26a and 26b are provided. The opening 26a is an example of a first opening, and the opening 26b provided along with the opening 26a is an example of a second opening. The opening 26a and the opening 26b may be openings (notches) formed by cutting the substrate 16a.

  The electric wire 21a passes through the opening 26a, and the end 23a is connected to the connecting portion 24a (opening portion for soldering) on the substrate 16a. Similarly, the electric wire 21b passes through the opening 26b, and the end 23b is connected to the connecting portion 24b on the substrate 16a. At this time, the electric wire 21a is not connected (fixed) to the substrate 16a at a portion other than the end portion 23a, and the electric wire 21b is not connected to the substrate 16a at a portion other than the end portion 23b.

  The electric wire 21a is provided with a large-diameter portion 22a having a larger diameter than the opening 26a between the end portion 23a and the opening 26a. Similarly, the electric wire 21b is provided with a large-diameter portion 22b having a diameter larger than that of the opening 26b between the end portion 23b and the opening 26b. The large diameter portions 22a and 22b are an example of a first large diameter portion.

  The length L1 from the end 23a of the electric wire 21a to the large diameter portion 22a is longer than the linear distance L2 from the connecting portion 24a to the opening 26a on the substrate 16a. In addition, the “length to the large diameter portion 22a” more specifically means the length to the end of the large diameter portion 22a that contacts the substrate 16a when the electric wire 21a is pulled. Similarly, the length from the end 23b of the electric wire 21b to the opening 26b is longer than the linear distance from the connecting portion 24b to the opening 26b on the substrate 16a. That is, the electric wires 21a and 21b are bent (bent) on the upper surface side (the main surface side on the Z axis + side) of the substrate 16a.

  When the electric wires 21a and 21b are connected to an external power source, the electric wires 21a and 21b may be pulled from the inside to the outside of the illumination light source 10 in some cases. In the circuit board 16, even if the electric wires 21a and 21b are pulled, the large-diameter portion 22a is caught by the hook of the opening 26a, and the large-diameter portion 22b is hooked by the hook of the opening 26b. Therefore, even if the electric wires 21a and 21b are pulled, the force applied to the connecting portion between the substrate 16a and the electric wire 21a and the connecting portion between the substrate 16a and the electric wire 21b is small.

  As shown in FIG. 6, in more detail, the electric wire 21a includes an electrically conductive core wire 28 and an insulating covering member 29 that covers the core wire 28. In the end 23a, The core wire 28 is exposed. In the connection portion between the substrate 16a and the electric wire 21a, the core wire 28 is inserted into the connection portion 24a from the upper surface side of the substrate 16a, and the inserted core wire 28 is fixed by the solder 30 on the lower surface side of the substrate 16a. Although not shown, the same applies to the electric wire 21b.

  Thus, according to the large diameter parts 22a and 22b, the load to the connection part of the board | substrate 16a and the electric wire 21a and the connection part of the board | substrate 16a and the electric wire 21b can be reduced.

  In addition, since one opening 26a only needs to be provided for one electric wire 21a, the load on the connection portion between the substrate 16a and the electric wire 21a can be reduced with less space than the tension stopper structure described in Patent Document 1 described above. Can be reduced.

  Moreover, since the tension stop structure described in Patent Document 1 needs to bend the electric wire into an S shape, it may be difficult to apply to a thick electric wire such as a power line. However, with a configuration like the circuit board 16, it is possible to reduce the load on the connection portion between the board 16a and the electric wire 21a only by inserting the electric wire 21a through the opening 26a. There is an advantage that can be easily applied to.

  In the first embodiment, the large-diameter portion 22a is formed by winding a heat-shrinkable tube around the electric wire 21a and causing heat shrinkage. In other words, the large diameter portion 22a is formed by a heat-shrinkable tube wound around the electric wire 21a and thermally contracted. However, the formation method of the large diameter portion 22a and the material of the large diameter portion 22a are not particularly limited. For example, the large diameter portion 22a may be formed by caulking a metal member around the electric wire 21a, or may be formed by winding a resin member such as a binding band around the electric wire 21a. The same applies to the large diameter portion 22b.

  In this way, in the structure in which the large diameter portion 22a is hooked on the flange of the opening 26a, a force is easily applied to the vicinity of the opening 26a on the substrate 16a when the electric wire 21a is pulled. Therefore, in the illumination light source 10, the support portion provided in the housing 12 supports the circuit board 16 in the vicinity of the opening 26a. Hereinafter, the structure of the support part provided in the housing | casing 12 is demonstrated using FIG. 6 and FIG. FIG. 6 is a cross-sectional view of the vicinity of the openings 26a and 26b. FIG. 7 is an external perspective view of the housing 12.

  As shown in FIGS. 6 and 7, in the illumination light source 10, the housing 12 is provided with a support portion 12c, and the housing 12 supports the substrate 16a (circuit board 16) at the support portion 12c. The housing 12 is an example of a support member.

  Here, the support portion 12c supports the circuit board 16 in the vicinity of the openings 26a and 26b. More specifically, the support portion 12c supports a portion of the circuit board 16 between the opening 26a and the opening 26b.

  Thereby, when the electric wires 21a and 21b are pulled, the load applied to the substrate 16a can be effectively reduced, and an effect that deformation such as bending is hardly generated in the substrate 16a is obtained.

[Modification 1]
In the first embodiment, the large diameter portion 22a is provided on the electric wire 21a, and the large diameter portion 22b is provided on the electric wire 21b. However, one large diameter portion may be provided across the two electric wires 21a and 21b. FIG. 8 is a cross-sectional view for explaining an example in which one large-diameter portion is provided across two electric wires 21a and 21b.

  The large diameter portion 32 shown in FIG. 8 is provided across the electric wires 21a and 21b. For example, when the large diameter portion 32 is formed of a heat shrinkable tube, the heat shrinkable tube bundles the electric wire 21a and the electric wire 21b. Even with such a configuration, it is possible to reduce the load on the connection portion between the substrate 16a and the electric wire 21a in a small space.

  Further, when it is necessary to separately provide a member for bundling the electric wires 21a and 21b, it is possible to realize both a function of forming a large diameter portion and a function of bundling the electric wires 21a and 21b with one heat shrinkable tube. it can.

[Modification 2]
In the said Embodiment 1, the large diameter part 22a was provided in the part located in the one main surface (Z-axis + main surface) side of the board | substrate 16a of the electric wire 21a. Here, a large-diameter portion having a diameter larger than that of the opening 26a may be further provided in a portion of the electric wire 21a located on the other main surface (Z-axis-side main surface) side of the substrate 16a. That is, in one electric wire 21a, two large diameter portions may be provided so as to sandwich the substrate 16a. FIG. 9 is a cross-sectional view for explaining an example in which two large diameter portions are provided in one electric wire 21a.

  As shown in FIG. 9, the electric wire 21a may be provided with a large-diameter portion 27a in addition to the large-diameter portion 22a. Similarly, the electric wire 21a may be provided with a large-diameter portion 27b in addition to the large-diameter portion 22b. The large diameter portions 27a and 27b are an example of a second large diameter portion.

  When the electric wires 21a and 21b are connected to an external power source, it is assumed that the electric wires 21a and 21b are pushed in from the outside to the inside of the illumination light source 10. In the circuit board 16, even if the electric wires 21a and 21b are pushed in, the large-diameter portion 27a is caught by the hook on the lower surface side of the opening 26a, and the large-diameter portion 27b is caught by the hook of the opening 26b. Therefore, even if the electric wires 21a and 21b are pushed in, the force applied to the connecting portion between the substrate 16a and the electric wire 21a and the connecting portion between the substrate 16a and the electric wire 21b is small.

  As described above, according to the large diameter portions 27a and 27b, the load on the connection portion between the board 16a and the electric wire 21a, which is generated when the electric wires 21a and 21b are pushed toward the inside of the illumination light source 10, and the board The load on the connection portion between 16a and the electric wire 21b can be reduced.

(Embodiment 2)
In the first embodiment, the illumination light source 10 has been described as an example of an electrical device including the circuit board 16. However, this invention may be implement | achieved as an illuminating device provided with the light source 10 for illumination (circuit board 16), for example. Hereinafter, an illumination device including the illumination light source 10 will be described. FIG. 10 is a perspective view of the lighting apparatus according to Embodiment 2. FIG.

  As shown in FIG. 10, the illumination device 100 is a so-called downlight, and is an embedded illumination device that illuminates light downward (eg, a hallway or a wall) by being embedded in a ceiling of a house, for example. It is. The illumination light source 10 is accommodated in the fixture main body 110 of the illumination device 100. At this time, the Z axis + side in the first embodiment is the main light emitting direction of the illumination device 100. Note that the connection hole and the connection screw described in the first embodiment are used to attach the illumination light source 10 to the fixture body 110.

  The instrument main body 110 is a mounting base to which the illumination light source 10 is attached and a heat sink that dissipates heat generated by the illumination light source. The instrument main body 110 is made of, for example, aluminum die casting. A plurality of heat radiating fins are provided on the upper portion (ceiling side portion) of the instrument main body 110.

  The terminal block 160 is attached to a mounting plate 170 provided separately from the instrument main body 110. The attachment plate 170 is a rectangular plate member made of a metal material, and the terminal block 160 is attached to the lower surface. The attachment plate 170 is connected to the top plate 180 attached to the upper part of the instrument main body 110.

  Thus, although the illumination light source 10 can be applied to a downlight, it may be applied to other illumination devices. FIG. 11 is a perspective view of another illumination device according to Embodiment 2. FIG.

  As illustrated in FIG. 11, the lighting device 200 is a so-called spotlight, and includes a cover 210, a lamp 220, and an arm 230.

  The illumination light source 10 is housed inside the lamp 220, and the light emitted from the illumination light source 10 passes through the cover 210 and is emitted to the outside of the illumination device 200. The lamp 220 and the arm 230 are fixed by a fixing member such as a screw.

  Thus, the illumination light source 10 can be applied to a spotlight. The illumination light source 10 can also be applied to illumination devices other than downlights and spotlights. Since the illumination light source 10 includes the sealing member as described above, the illumination light source 10 is particularly useful as a light source for outdoor illumination such as illumination attached to a low pole or underground illumination.

(Other embodiments)
As described above, the circuit board and the electric apparatus (the illumination light source 10, the illumination device 100, and the illumination device 200) according to the embodiment have been described. However, the present invention is not limited to such an embodiment. .

  For example, in the above-described embodiment, the support portion 12 c that supports the circuit board 16 is provided in the housing 12, but may be provided in other members such as the base 13. That is, the member (support member) that supports the circuit board 16 is not particularly limited.

  Moreover, in the said embodiment, although the electric wires 21a and 21b are power supply lines, the electric wires 21a and 21b may be signal lines. That is, the use of the electric wires 21a and 21b is not particularly limited.

  In the above-described embodiment, an example in which the circuit board of the present invention is applied to an electrical device for lighting use has been described. However, the circuit board of the present invention can be widely used not only for lighting purposes but also for various electrical devices. .

  Moreover, in the said embodiment, although the light emitting module was a light emitting module of the COB structure, it may be a SMD (Surface Mount Device) type.

  In the above embodiment, the light emitting module uses an LED as a light emitting element. However, a semiconductor light emitting element such as a semiconductor laser, or a solid light emitting element such as an organic EL (Electro Luminescence) or an inorganic EL may be used. Good.

  As mentioned above, although the circuit board and the electric equipment which concern on one or some aspect were demonstrated based on embodiment, this invention is not limited to this embodiment. Unless it deviates from the gist of the present invention, various modifications conceived by those skilled in the art have been made in this embodiment, and forms constructed by combining components in different embodiments are also within the scope of one or more aspects. May be included.

10 Light source for illumination (electrical equipment)
12 Housing (supporting member)
DESCRIPTION OF SYMBOLS 16 Circuit board 16a Board | substrate 21a, 21b Electric wire 22a, 22b, 27a, 27b, 32 Large diameter part 23a, 23b End part 24a, 24b Connection part 25 Circuit component 26a, 26b Opening 28 Core wire 29 Cover member 100, 200 Illuminating device (electricity machine)

Claims (10)

A circuit board on which circuit components are mounted and an opening is provided;
An electric wire passing through the opening and having an end connected to the substrate;
The circuit board is provided with a large-diameter portion having a diameter larger than that of the opening between the end portion and the opening. The end is connected to a connection portion of the substrate,
The circuit board of Claim 1. The length from the said edge part of the said electric wire to the said large diameter part is longer than the distance from the said connection part on the said board | substrate to the said opening. The first large-diameter portion that is the large-diameter portion is provided in a portion located on one main surface side of the substrate of the electric wire,
The circuit board according to claim 1, wherein a portion of the electric wire located on the other main surface side of the board is further provided with a second large diameter part having a diameter larger than that of the opening. The circuit board according to claim 1, wherein the large diameter portion is formed by a heat shrinkable tube. The circuit board according to claim 4, wherein the large diameter portion is provided across the electric wire and another electric wire. The circuit board according to claim 1, wherein the electric wire is a power supply line for supplying electric power to the circuit board from outside. The wire is
A conductive core wire;
The circuit board of any one of Claims 1-6 provided with the coating | coated member which has the insulation which coat | covers the said core wire. The circuit board according to any one of claims 1 to 7,
An electric device comprising: a support member that supports the substrate in the vicinity of the opening. The substrate is provided with a second opening through which the electric wire is inserted, along with the first opening which is the opening.
The electric device according to claim 8, wherein the support member supports a portion of the substrate between the first opening and the second opening. The electrical device according to claim 8 or 9, wherein the electrical device is a light source for illumination or a lighting device.

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