JP2012171457A - Mounting substrate of lighting bulb - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting substrate of a lighting bulb that can reduce the number of parts and supporting the lighting bulb stably.SOLUTION: The mounting substrate 10 of the lighting bulb includes a substrate body 11, a pair of lands 12a, 12b formed on a vertical surface 11A of the substrate body 11, and a support terminal structure 13 fixed to the vertical surface 11A of the substrate body 11. The support terminal structure 13 provides a function of supporting a base part 82 of the lighting bulb 80. The support terminal structure 13 includes a pair of support terminals 14a, 14b to electrically connect one bulb terminal 83 and land 12a as well as the other bulb terminal 83 and land 12b respectively.

Description

  The present invention relates to a mounting board for an illumination bulb, for example, a mounting board for an illumination bulb applicable to an in-vehicle lighting device.

  As an in-vehicle illumination device, an illumination device installed on the ceiling part in the vehicle can be exemplified. Also, a lighting device may be installed in a trunk room or the like. Some of these in-vehicle lighting devices include a substrate on which a lighting bulb is mounted. As the illumination bulb, an illumination bulb 80 having the form illustrated in FIG. 21 is widely used.

  As shown in FIG. 21, the lighting bulb 80 includes a main body portion 81 in which a filament is enclosed, and a base portion 82 that has a flat shape and has a smaller outer shape than the main body portion 81. The base part 82 has a shape extending along the longitudinal direction of 80. A pair of valve terminals 83 connected to the filament are drawn out on a main surface 84 which is a surface along the width direction of the base portion 82. The main body 81 has a substantially cylindrical outer shape with the longitudinal direction of the illumination bulb 80 as the axial direction, and the other end has a hemispherical shape. Such an illumination bulb is generally called a wedge base type.

  The base portion 82 of the illumination bulb 80 is provided with a cylindrical portion 85 at the center in the width direction. The columnar portion 85 is provided coaxially with the main body portion 81, and the center portions in the width direction of the two main surfaces 84 are raised along the vertical direction. Further, a concave portion 86 extending along the width direction is formed in a portion excluding the columnar portion 85 at the central portion in the vertical direction of each main surface 84. Each valve terminal 83 is arranged on the main surface 84 located on the opposite side, avoiding the circular arc surface of the cylindrical portion 85, and located on the opposite side in the width direction of the base portion 82. The illumination bulb 80 is rotationally symmetrical twice with respect to the axis of the main body portion 81 and the axis of the cylindrical portion 85 (the same shape is obtained when rotated by 180 °).

  Here, the “vertical direction” of the base portion 82 means a direction along the longitudinal direction of the illumination bulb 80. The “width direction” of the base portion 82 is a direction in which the base portion 82 extends in a direction orthogonal to the longitudinal direction, and the direction perpendicular to the longitudinal direction and the width direction of the base portion 82 is the “thickness direction”. is there. The width of the base portion 82 is substantially equal to the radial length of the main body portion 81, but the thickness of the base portion 82 is significantly smaller than the radial length of the main body portion 81.

  As shown in FIG. 22, according to the conventional technique, the socket 90 is mounted on the base portion 82 of the lighting bulb 80 and mounted on the substrate. The socket 90 supports the base portion 82 and is fitted into a socket fitting portion provided on the board. The socket 90 includes a socket terminal that contacts the pair of valve terminals 83. Further, the socket 90 includes a housing that supports the columnar portion 85 and the main surface 84 in the vicinity thereof in order to prevent the lighting bulb 80 from rattling. For example, a circular arc surface corresponding to the shape of the cylindrical portion 85 is formed in the housing. In this way, the illumination bulb 80 is stably supported with respect to the substrate.

  An in-vehicle illumination device including a substrate on which an illumination bulb is mounted is also disclosed in a plurality of patent documents. For example, Patent Documents 1 and 2 disclose a form in which an illumination bulb is mounted on a substrate via a socket.

JP 2009-255709 A JP 2010-143455 A

  By the way, in-vehicle lighting devices are required to reduce costs by reducing the number of parts. For example, if the number of sockets can be reduced, the cost can be significantly reduced, but without the socket, there is a problem that the lighting bulb cannot be stably supported on the substrate.

  Accordingly, an object of the present invention is to provide a mounting board for an illumination bulb that can reduce the number of components and can stably support the illumination bulb.

  An illumination bulb mounting substrate according to the present invention includes a main body portion that encloses a filament and a base portion having an outer shape smaller than the main body portion, and a pair of bulb terminals connected to the filament are drawn out on the base portion. A plurality of supports including a substrate body, a pair of lands formed on the substrate body, and a plurality of supports that are fixed on the substrate body and support the base portion of the lighting bulb. Has a support terminal structure including a pair of support terminals that electrically connect a pair of valve terminals and a pair of lands, respectively.

  According to the said structure, the base part of an illumination bulb can be stably supported by the some support body fixed on the board | substrate body. The plurality of supports include a support terminal structure including a pair of support terminals that electrically connect the pair of valve terminals and the pair of lands, respectively. That is, since the support has a socket function, a conventional socket is not necessary.

  In the lighting bulb mounting substrate according to the present invention, the lighting bulb has a form in which the base portion has a flat shape and a pair of bulb terminals are drawn out on the main surface along the width direction of the base portion, The pair of support terminals is composed of a metal plate that is at least partially erected on the substrate body, and the support terminal structure has the base portion from both sides in the thickness direction with the illumination bulb erected on the substrate body. It is preferable to have a clamping gap that can be clamped. According to this configuration, the flat shape base portion can be sandwiched from both sides in the thickness direction by the support terminal structure including a pair of support terminals erected on the substrate body, so that the lighting bulb is erected on the substrate body. Stable support in the installed state.

  The support terminal structure includes a first support terminal that is in contact with one valve terminal on one side in the width direction of the base portion and that can press each main surface to sandwich the base portion from both sides in the thickness direction. And a second support terminal that is in contact with the other valve terminal on the other side in the width direction of the base portion and presses each main surface to clamp the base portion from both sides in the thickness direction. It can be set as the structure each provided in each support terminal.

  Further, each bulb terminal is a substrate for mounting the illumination bulb drawn on the main surface located on the opposite side, and the holding gap of the support terminal structure is made smaller than the thickness of the base portion. By arranging the support terminals so as to face each other, at least one of the support terminals can be elastically deformed in a direction away from each other in the holding gap. According to the said structure, a base part can be clamped from the both sides of the thickness direction by a pair of support terminal arrange | positioned facing. Further, since at least one of the support terminals is elastically bent, the base portion can be easily inserted into the holding gap. On the other hand, after the base part is inserted, the base part is strongly held by the elastic force of the support terminal, so that the illumination bulb is difficult to come off.

  Also, each support terminal is arranged to face each other different main surface, a base fixed on the substrate body, and extended from one end of the base, bent to stand on the substrate body, A terminal part that abuts the valve terminal and presses one side of the main surface in the width direction, and extends from one end of the base part separately from the terminal part, and is bent so as to stand up on the substrate body. And a support portion that presses the other side in the direction. According to the said structure, since the terminal part and support part of each support terminal can press the width direction both sides of a main surface from the both sides of the thickness direction of a base part, the rattling of an illumination bulb can further be suppressed. On the other hand, the main surface may be pressed only with the wide terminal portion. However, when the width of the pressed portion is increased, for example, a gap is assumed to be generated at the end portion in the width direction due to distortion or misalignment. Therefore, according to the support terminal in which the pressing portion is divided into two, it becomes easy to press both sides of the main surface in the width direction evenly.

  In addition, the existing wedge-type illumination bulb is provided with a columnar portion, and the central portion in the width direction of the main surface of the base portion is raised to form an arc surface on the main surface. And each valve terminal is arrange | positioned at the width direction one side of each main surface avoiding the said circular arc surface. According to the support terminal in which the portion in contact with the main surface is divided into two, the both sides in the width direction of the main surface can be pressed while avoiding the arc surface. Alternatively, the cylindrical portion can be sandwiched between the terminal portion and the support portion that are divided into two forks to prevent rattling.

  Moreover, it is preferable that at least a part of the base portion has a flat plate shape that can come into contact with the standing surface of the substrate body on which the support terminal stands. According to the said structure, it becomes easy to mount a support terminal on a board | substrate body. For example, the area of the flat plate-shaped part is preferably a size that can be automatically mounted by a mounting machine such as a chip mounter.

  The substrate body is formed with an illumination bulb insertion hole through which at least the base portion can be inserted, and each support terminal is provided at the periphery of the illumination bulb insertion hole so that the base portion protruding from the illumination bulb insertion hole can be clamped. Preferably they are arranged. According to the said structure, since a base part can be clamped in the state which inserted the illumination bulb in the illumination bulb penetration hole, the thickness of the mounting form of an illumination bulb can be made thin. Further, if the illumination bulb is held using the illumination bulb insertion hole, the illumination bulb can be further prevented from rattling.

  Moreover, it is preferable that at least one of each support terminal includes the width direction pressing part which presses the width direction one side or both sides of a base part. Moreover, it is preferable that at least one of each support terminal includes an upward pressing portion that presses the upper surface of the base portion protruding from the through hole. According to the said structure, the movement of a base part can be restrict | limited or it can prevent that a base part moves. For example, when the base portion moves in the width direction and comes into contact with the width direction pressing portion, further movement can be stopped by the width direction pressing portion.

  In addition, the support terminal structure can be formed by fixing the integrated terminal into the support terminals after being fixed on the substrate body in the form of an integrated terminal in which the support terminals are integrated. According to the said structure, the mounting process of a support terminal can be simplified, for example.

  In addition, the support terminal can be soldered to the substrate body in which the land is formed on the standing surface by the reflow method. In addition, with respect to the substrate body formed on the back surface opposite to the standing surface, a part of the substrate body protrudes from the insertion hole formed in the substrate body to the vicinity of the land, and the protrusion is made by a flow method. The part and the land can also be soldered.

  According to the substrate for mounting an illumination bulb according to the present invention, the number of components can be reduced and the illumination bulb can be stably supported. The mounting board for the lighting bulb according to the present invention is suitable, for example, as a mounting board for an in-vehicle lighting device, and the cost of the in-vehicle lighting device can be reduced.

It is the perspective view which looked at the board | substrate for mounting of the illumination bulb which is 1st Embodiment of this invention from the standing surface side. It is a side view which shows the board | substrate for mounting which is 1st Embodiment. It is a bottom view which shows the board | substrate for mounting which is 1st Embodiment. It is a figure which shows the single-piece | unit of a board | substrate body in the mounting board | substrate which is 1st Embodiment. It is a figure which shows the single-piece | unit of a support terminal in the mounting board | substrate which is 1st Embodiment. In FIG. 1, it is a figure which shows a mode that the illumination valve | bulb was mounted. In FIG. 2, it is a figure which shows a mode that the illumination valve | bulb was mounted. In 1st Embodiment, it is a figure which shows the modification of a board | substrate body. It is the perspective view which looked at the board | substrate for mounting of the illumination bulb which is 2nd Embodiment of this invention from the standing surface side. It is a side view which shows the board | substrate for mounting which is 2nd Embodiment. It is a bottom view which shows the board | substrate for mounting which is 2nd Embodiment. In FIG. 9, it is a figure which shows a mode that the illumination valve | bulb was mounted. In FIG. 10, it is a figure which shows a mode that the illumination valve | bulb was mounted. It is the perspective view which looked at the board | substrate for mounting of the illumination valve which is 3rd Embodiment of this invention from the standing surface side. It is a bottom view which shows the board | substrate for mounting which is 3rd Embodiment. In the mounting substrate which is 3rd Embodiment, it is the figure which abbreviate | omitted one support terminal and looked at the other support terminal from the omitted support terminal side. It is a figure which shows the semi-finished product of the mounting board | substrate which is 3rd Embodiment. It is a figure which shows the 1st modification in embodiment of this invention. It is a figure which shows the 2nd modification in embodiment of this invention. It is a figure which shows the 3rd modification in embodiment of this invention. It is a perspective view which shows an illumination bulb. It is a perspective view which shows the illumination bulb with which the socket was mounted | worn.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.

  In the embodiment, an existing illumination valve 80 (see FIG. 21) is exemplified as the illumination bulb, but the present invention can be applied to, for example, a configuration in which the shape of the illumination bulb 80 is partially changed. As a modification of the lighting bulb 80 to which the present invention can be applied, a form in which each bulb terminal 83 is drawn out on the main surface 84 on the same side, a form without the cylindrical part 85, and a cylindrical part 85 are provided. A configuration in which the concave portion 86 is formed over the entire width of the main surface 84 can be exemplified.

  Further, in the embodiment, for convenience of explanation, an embodiment is shown in which one support terminal structure is fixed to the central portion of the substrate body and one illumination bulb 80 is mounted, but the present invention is not limited to the illustrated embodiment. . For example, a plurality of illumination bulbs 80 can be mounted on the substrate body with a plurality of support terminal structures fixed thereto. In addition to the illumination bulb 80, various electronic components such as switches, transistors, capacitors, and connectors can be mounted on the substrate body.

  In the embodiment, for convenience of explanation, terms indicating directions such as “up and down”, “front and rear”, and “left and right” are used. Hereinafter, the surface of the substrate body on which the support terminal structure is erected is referred to as “standing surface”, the surface opposite to the erected surface is referred to as “back surface”, and the direction perpendicular to the erected surface of the substrate body is referred to as “up and down”. Direction. Further, the illumination bulb 80 has the base portion 82 side “up”. In the first and second embodiments, in a pair of support terminals arranged to face each other, a side closer to the opposite support terminal is referred to as “front”, and a side far from the support terminal is referred to as “rear”. In the pair of support terminals, a direction perpendicular to the vertical direction and the front-rear direction is referred to as “left-right direction”, the terminal portion side is “right”, and the support portion side is “left”.

<First Embodiment>
The illumination valve mounting substrate 10 (hereinafter referred to as the mounting substrate 10) according to the first embodiment of the present invention will be described in detail with reference to FIGS. In the following description, among the support terminals 14a and 14b, components related to the support terminal 14a are denoted by “a”, and components related to the support terminal 14b are denoted by “b”.

  First, the configuration of the mounting substrate 10 will be described in detail with reference to FIGS.

  FIG. 1 is a perspective view of the mounting substrate 10 as viewed from the standing surface 11A side, and FIG. 2 is a side view of the mounting substrate 10. FIG. As shown in FIGS. 1 and 2, the mounting substrate 10 includes a substrate body 11, a pair of lands 12 a and 12 b formed on the standing surface 11 </ b> A of the substrate body 11, and the standing surface 11 </ b> A of the substrate body 11. And a support terminal structure 13 fixed thereon. The support terminal structure 13 has a function of supporting the base portion 82 of the lighting bulb 80. The support terminal structure 13 includes a pair of support terminals 14a and 14b that electrically connect the one valve terminal 83 and the land 12a and the other valve terminal 83 and the land 12b, respectively.

  The substrate body 11 is a plate-like member on which the lands 12a and 12b and the wiring 25 are formed on the standing surface 11A and to which the support terminal structure 13 is fixed. It does not specifically limit as a form of the board | substrate body 11, For example, a rectangular flat resin plate can be illustrated. 1 shows the linear wiring 25 formed on the standing surface 11A, the formation position and pattern of the wiring 25 are not particularly limited, and the wiring 25 is formed inside the substrate body 11. May be. For example, the wiring 25 connects the lands 12a and 12b to various electronic components mounted on the board body 11 and lead wires drawn to the outside. The substrate body 11 is formed with an illumination bulb insertion hole 23 and leg portion insertion holes 24a and 24b, which will be described in detail later.

  As described above, the support terminal structure 13 is composed of a pair of support terminals 14a and 14b. The support terminals 14 a and 14 b are made of a metal plate that is at least partially erected on the substrate body 11. The support terminal structure 13 has a clamping gap 15 in which the base portion 82 of the lighting bulb 80 can be clamped from both sides in the thickness direction in a state where the lighting bulb 80 is erected vertically to the substrate body 11.

  Here, as a metal plate which comprises the support terminals 14a and 14b, what has high electroconductivity and can be bent and soldered is suitable. Furthermore, the metal plate is preferably elastically deformable, and needs to have mechanical strength capable of sandwiching the illumination bulb 80. The thickness of the metal plate is preferably about 0.3 mm.

  The holding gap 15 of the support terminal structure 13 is provided by arranging the support terminals 14a and 14b so as to be in contact with the main surface 84 of the base portion 82 located on the opposite side. That is, the clamping gap 15 is provided between the support terminals 14a and 14b. The clamping gap 15 is preferably provided with the gap between the support terminals 14 a and 14 b set to be narrower than the thickness of the base portion 82 of the illumination bulb 80. In the clamping gap 15, at least one of the support terminals 14 a and 14 b can be elastically deformed in a direction away from each other, that is, elastic bending can be performed. Since the support terminals 14a and 14b are elastically bent, the base part 82 can be inserted into a gap narrower than the thickness of the base part 82. After the insertion, the base part 82 is strongly held by the elastic force of the support terminals 14a and 14b. it can.

  The support terminals 14a and 14b include base portions 16a and 16b fixed on the standing surface 11A of the substrate body 11, terminal portions 17a and 17b extending from the front ends of the base portions 16a and 16b, and front ends of the base portions 16a and 16b. Terminal portions 17a and 17b and support portions 18a and 18b extending separately are included. That is, the support terminals 14a and 14b have a shape in which the front portion is divided into two. The terminal portions 17 a and 17 b and the support portions 18 a and 18 b are bent so as to stand on the substrate body 11, and when the base portion 82 of the lighting bulb 80 is inserted into the clamping gap 15, the main portions of the base portion 82. It is a part which contacts the surface 84, respectively. Further, the terminal portions 17a and 17b are in contact with the valve terminals 83 on the main surfaces 84, respectively.

  The support terminals 14a and 14b have the same shape. In the support terminal structure 13, the terminal portion 17a of the support terminal 14a and the support portion 18b of the support terminal 14b face each other, and the support portion 18a of the support terminal 14a and the terminal portion 17b of the support terminal 14b face each other. Has the form. Hereinafter, the contents common to the support terminals 14a and 14b will be described for the support terminal 14a for clarity of explanation.

  The support terminal 14a is composed of a single metal plate, and has a shape in which the terminal portion 17a extends from the front right side of the base portion 16a and the support portion 18a extends from the front left side of the base portion 16a. The terminal portion 17a and the support portion 18a are separated by forming a cut (hereinafter referred to as a slit) between them, and are largely curved upward from the vicinity of the base. In the support terminal 14a, the terminal portion 17a extends longer than the support portion 18a and has an asymmetric shape.

  In the support terminal 14a, the length (hereinafter referred to as the width) of the base portion 16a in the left-right direction is equal to the width from the right end of the terminal portion 17a to the left end of the support portion 18a. That is, the width of the support terminal 14a is the same along the front-rear direction. For example, the width of the support terminal 14 a is preferably set substantially equal to the width of the base portion 82 of the lighting bulb 80. That is, when the base portion 82 of the illumination bulb 80 is inserted into the clamping gap 15, the terminal portion 17 a presses one side in the width direction of the main surface 84, and the support portion 18 a is the other side in the width direction of the main surface 84. It is suitable that it is configured to press.

  Note that the width of the terminal portion 17a and the support portion 18a can be appropriately changed by changing the slit formation position, but the slit is formed so that the width of each portion is substantially equal at the center in the left-right direction of the support terminal 14a. It is preferable. In addition, the slit is preferably formed so that the terminal portion 17 a and the support portion 18 a do not contact the circular arc surface of the cylindrical portion 85.

  The base portion 16a is a portion connected to the land 12a formed on the standing surface 11A, and is preferably directly fixed to the land 12a using solder. That is, it is preferable that the support terminal 14 a is directly soldered on the substrate body 11. The base portion 16a has a flat plate shape that is in contact with the standing surface 11A. The base portion 16a is slightly curved on the front side and is provided with a leg portion 22a on the rear side, most of which has a flat plate shape. Since the base portion 16a has a flat plate shape, for example, the support terminals 14a can be placed on the substrate body 11 using a chip mounter, and automatic mounting of the support terminals 14a is facilitated.

On both left and right sides of the base portion 16a, leg portions 22a that extend perpendicularly to the base portion 16a and project from the leg insertion holes 24a toward the back surface 11B are provided. The leg portion 22a is used for electrical connection with the land 12a in, for example, the board body 11 _X (see FIG. 8 described later) that supports soldering by a flow method. That is, the support terminal 14 a has a form that can be applied regardless of the type of the substrate body 11. The leg 22a can also exhibit functions such as positioning and temporary fixing of the support terminal 14a in the substrate body 11 corresponding to the reflow method.

  The terminal portion 17a and the support portion 18a are bent backward so as to be substantially perpendicular to the base portion 16a, and are erected on the substrate body 11 substantially perpendicularly. And the terminal part 17a and the support part 18a have a function which clamps the base part 82 of the lighting bulb 80 from the both sides of the thickness direction with the support part 18b and the terminal part 17b which are each opposingly arranged. In addition, the terminal part 17a and the support part 18a have the convex part 19a which forms the clamping gap 15, respectively. Further, the terminal portion 17a abuts on the valve terminal 83 and functions as a portion that forms an electrical connection with the land 12a. Moreover, the terminal part 17a has the width direction pressing part 20a and the upper direction pressing part 21a in the part extended longer than the support part 18a.

  The convex portion 19a is a portion in which a part of the terminal portion 17a and the support portion 18a bulges toward the front, that is, toward the support terminal 14b that is disposed to be opposed. The convex portion 19a is formed by bending the terminal portion 17a and the support portion 18a bent rearward so as to be substantially perpendicular to the base portion 16a to be bent backward at a height exceeding substantially vertical. The convex portions 19 a can be formed at the same height, and are preferably formed at a height that fits into the concave portions 86 formed on the main surface 84. A sandwiching gap 15 is provided between the support terminals 14a and 14b by the convex portion 19a of the support terminal 14a and the convex portion 19b of the support terminal 14b. More specifically, the holding gap 15 is provided by arranging the support terminals 14a and 14b so that the distance between the convex portion 19a and the convex portion 19b is smaller than the thickness of the base portion 82 of the lighting bulb 80. It is done.

  The width direction pressing portion 20a is provided above the terminal portion 17a. The width direction pressing portion 20a presses one of the surfaces (hereinafter referred to as side surfaces) along the thickness direction of the base portion 82 of the lighting bulb 80, and the width direction pressing portion 20b of the support terminal 14b presses the other side surface. It has a function of limiting the movement of the base portion 82 in the width direction together with the width direction pressing portion 20b. The width direction pressing portion 20a has a shape extending forward from the upper right end of the terminal portion 17a so as to follow the side surface of the base portion 82 held in the holding gap 15. The length along the front-rear direction of the width direction pressing portion 20a can be determined as appropriate as long as it does not contact the opposing support portion 18b. On the other hand, it is preferable that the distance between the width direction pressing portion 20a and the width direction pressing portion 20b is close to the width of the base portion 82 as long as the mounting of the illumination bulb 80 is not affected.

  The upward pressing portion 21a is provided at the upper end of the terminal portion 17a. The upper pressing portion 21a presses the upper surface on one side in the width direction of the base portion 82 protruding from the illumination bulb insertion hole 23, and the upper pressing portion 21b presses the upper surface on the other side in the width direction of the base portion 82 to move upward. It has a function of restricting upward movement of the base portion 82 together with the presser portion 21b. The upper pressing portion 21 a has a shape in which the upper end of the terminal portion 17 a is bent forward and extends forward along the upper surface of the base portion 82 protruding from the illumination bulb insertion hole 23. The extension length of the upward pressing portion 21a can be set to a length that covers approximately half of the upper surface of the base portion 82, for example.

  In the support terminal 14a, the width direction pressing portion 20a and the upper direction pressing portion 21a are provided in the terminal portion 17a. However, the width direction pressing portion 20a and the upper direction pressing portion 21a may be provided in the support portion 18a. Moreover, the width direction pressing part 20a and the upper direction pressing part 21a may be provided separately in the terminal part 17a and the support part 18a.

  Reference is now further made to FIGS.

  FIG. 3 is a bottom view of the mounting substrate 10, and FIG. 4 is a plan view showing a single body of the substrate body 11. As shown in FIGS. 1 to 4, an illumination valve insertion hole 23 is formed between the support terminals 14 a and 14 b so as to penetrate the substrate body 11 perpendicularly to the standing surface 11 </ b> A and the back surface 11 </ b> B. In other words, the support terminals 14a and 14b are disposed to face each other with the illumination bulb insertion hole 23 interposed therebetween. The illumination bulb insertion hole 23 has a circular opening shape, and its diameter is set to be slightly larger than the radial length of the main body portion 81. That is, the illumination bulb insertion hole 23 is a through-hole through which the illumination bulb 80 can be inserted along the longitudinal direction.

  The support terminals 14a and 14b are arranged so that the terminal portions 17a and 17b and the support portions 18a and 18b protrude over the illumination bulb insertion hole 23 so as to cover the illumination bulb insertion hole 23. That is, as shown in FIGS. 6 and 7 to be described later, in the mounting form of the illumination bulb 80, the illumination bulb 80 is inserted into the illumination bulb insertion hole 23 from the back surface 11B side, and the base portion 82 projects to the standing surface 11A side. However, the support terminals 14a and 14b are disposed on the periphery of the illumination bulb insertion hole 23 so that the base portion 82 protruding from the illumination bulb insertion hole 23 can be clamped.

  A pair of lands 12a and 12b are formed on the standing surface 11A of the substrate body 11 at positions facing each other with the illumination bulb insertion hole 23 therebetween. The lands 12a and 12b are formed at positions away from the edge of the illumination bulb insertion hole 23 in consideration of the longitudinal length of the support terminals 14a and 14b, the gap between the support terminals 14a and 14b, and the like. The formation patterns of the lands 12a and 12b can be formed in the same pattern as illustrated in FIG. FIG. 4 illustrates a form in which the land 12a is divided into three regions, but the formation pattern is not particularly limited.

  Further, leg insertion holes 24a and 24b, which are through holes through which the leg portions 22a and 22b can be inserted, are formed in the substrate body 11, respectively. FIG. 3 illustrates a form in which a total of four leg insertion holes 24a and 24b are formed so as to surround the illumination bulb insertion hole 23. However, the number of formations, the formation position, the opening shape, and the like are shown in FIG. It can be appropriately changed according to the number, shape, etc. of 22a, 22b.

  Here, with reference to FIG. 5 showing a single support terminal 14a, the configuration thereof will be supplementarily described.

  As shown in FIG. 5, the support terminal 14 a has a curved shape so that the terminal portion 17 a and the support portion 18 a extending in a bifurcated manner from the front of the base portion 16 a are largely warped backward. The terminal portion 17a has the same shape as the support portion 18a in the same length as the support portion 18a, and has a convex portion 19a that bulges forward at the same height.

  The terminal portion 17a has a shape in which the upper end of the support portion 18a further extends substantially perpendicular to the base portion 16a. The terminal portion 17a is provided with a width direction pressing portion 20a and an upper direction pressing portion 21a that are substantially orthogonal to each other at a portion extending longer than the support portion 18a. For example, the upward pressing portion 21a is formed by bending the upper end of the terminal portion 17a forward so as to be substantially parallel to the base portion 16a. On the other hand, the width direction pressing portion 20a is formed by forming a small piece portion extending from the right end in the vicinity of the upper end of the terminal portion 17a and bending the small piece portion forward so as to be substantially parallel to the front-rear direction. it can.

  Further, on both the left and right sides of the base portion 16a, leg portions 22a extending substantially perpendicular to the base portion 16a are provided in the opposite direction to the terminal portion 17a and the support portion 18a. Although FIG. 5 illustrates a form in which two rectangular leg portions 22a are provided, the number and shape of the leg portions 22a are not particularly limited.

  The support terminal 14a having the above configuration is preferably fixed on the standing surface 11A of the substrate body 11 by soldering. The support terminal 14a can be soldered to the land 12a by a reflow method, for example. The soldering by the reflow method is performed by the following procedure, for example. First, a solder paste called claim solder is applied onto the lands 12a formed on the standing surface 11A of the substrate body 11 using, for example, a printing machine. Next, the support terminals 14a are placed on the lands 12a coated with the solder paste using, for example, a chip mounter. Thereafter, the support body 14a is soldered onto the land 12a by heating the substrate body 11 and melting the solder.

  Next, with reference to FIG.6 and FIG.7, the mounting form of the illumination bulb 80 is demonstrated. In addition, the function and effect of the mounting substrate 10 will be described.

  FIG. 6 is a diagram illustrating a state in which the illumination bulb 80 is mounted in FIG. 1, and FIG. 7 is a diagram illustrating a state in which the illumination bulb 80 is mounted in FIG. In FIGS. 6 and 7, some symbols are omitted for the sake of clarity. As shown in FIGS. 6 and 7, the illumination bulb 80 is inserted into the illumination bulb insertion hole 23 from the back surface 11B side of the substrate body 11, and the support terminal structure body with the base portion 82 protruding from the standing surface 11A side. 13. The base portion 82 is held in the holding gap 15 of the support terminal structure 13, and the illumination bulb 80 is erected vertically on the substrate body 11. As described above, the holding gap 15 is arranged so that the support terminals 14a and 14b constituting the support terminal structure 13 are opposed so that the interval between the convex portions 19a and 19b is narrower than the thickness of the base portion 82. It is formed by that.

  When the base portion 82 of the lighting bulb 80 is to be inserted into the clamping gap 15, the terminal portion 17a, the terminal portion 17b, and the support portions 18a and 18b are pushed upward and bend. Then, the terminal part 17a and the support part 18b facing each other, and the support part 18a and the terminal part 17b facing each other are elastically deformed so as to widen the mutual distance, that is, in a direction away from each other, whereby the base part 82 can be inserted. Become. After the base part 82 is inserted, the base part 82 is strongly held by the elastic force that the terminal parts 17a, 17b and the support parts 18a, 18b return to their original shapes.

  In the mounting form of the illumination bulb 80 on the mounting substrate 10, in the clamping gap 15, the terminal portion 17 a and the support portion 18 a of the support terminal 14 a are on one main surface 84, and the terminal portion 17 b and the support portion 18 b of the support terminal 14 b are on the other side. The main surfaces 84 are respectively pressed. That is, the support terminals 14 a and 14 b press both sides in the width direction of the main surface 84 from both sides in the thickness direction of the base portion 82. Further, since the support terminals 14a and 14b are formed with slits for separating the terminal portions 17a and 17b and the support portions 18a and 18b at positions corresponding to the columnar portion 85, the main surface is avoided by avoiding the columnar portion 85. 84 can be pressed. Specifically, the terminal portion 17 a contacts the right side of the cylindrical portion 85 toward one main surface 84, and the support portion 18 a contacts the left side of the cylindrical portion 85. Similarly, the terminal portion 17b contacts the right side of the cylindrical portion 85 toward the other main surface 84, and the support portion 18b contacts the left side of the cylindrical portion 85 toward the other main surface 84.

  Thus, since the support terminals 14a and 14b can press and hold both sides in the width direction of the main surface 84 from both sides in the thickness direction of the base portion 82, the backlash of the lighting bulb 80 can be sufficiently suppressed, and the substrate body 11 can be suppressed. In contrast, the illumination bulb 80 can be stably supported. Further, the convex portions 19 a and 19 b constituting the sandwiching gap 15 are fitted into the concave portions 86 of the main surfaces 84. For this reason, the rattling of the illumination bulb 80 is further suppressed.

  In the mounting substrate 10, the illumination bulb 80 is supported in a state of being inserted into the illumination bulb insertion hole 23. Therefore, for example, the thickness of the packaging form is reduced by the length protruding from the standing surface 11 </ b> A side. it can. For example, when the mounting board 10 is applied to an in-vehicle lighting device, a design panel is installed on the back surface 11B side. However, in the mounting form of the mounting board 10, compared to the form without the illumination valve insertion hole 23, The length of the main body 81 protruding from the back surface 11B side is short. That is, the design panel can be arranged close to the substrate body 11 and can contribute to the reduction in thickness of the in-vehicle lighting device. The main body 81 of the illumination bulb 80 is held to some extent at the inner edge of the illumination bulb insertion hole 23. That is, the illumination bulb insertion hole 23 contributes to the backlash of the illumination bulb 80.

  The terminal portion 17a of the support terminal 14a abuts the one bulb terminal 83 while sandwiching the base portion 82 of the illumination bulb 80 together with the opposing support portion 18b to form an electrical connection with the land 12a. . Although not shown, the terminal portion 17b of the support terminal 14b is also in contact with the other valve terminal 83 while holding the base portion 82 together with the opposing support portion 18a in the same manner as the terminal portion 17a. Form an electrical connection. That is, the pair of valve terminals 83 is continuous with the contacted terminal portions 17a and 17b and the terminal portions 17a and 17b, and via the base portions 16a and 16b soldered to the pair of lands 12a and 12b, respectively. Are electrically connected to the pair of lands 12a and 12b.

  Further, one side surface of the base portion 82 is pressed by the width direction pressing portion 20a of the terminal portion 17a, and the other side surface of the base portion 82 is pressed by the width direction pressing portion 20b of the terminal portion 17b. That is, the movement in the width direction of the base portion 82 is restricted by the width direction pressing portions 20a and 20b, and the play in the width direction of the base portion 82 is further suppressed. Note that the width direction pressing portions 20 a and 20 b may contact the side surface of the base portion 82. As long as the mounting of the base portion 82 is not affected, it is preferable that the gap between the width direction pressing portions 20a and 20b and each side surface of the base portion 82 is small. As the gap is reduced, the range in which the base portion 82 moves can be narrowed, and the backlash prevention effect increases.

  Further, the upper surface of one side in the width direction of the base portion 82 is pressed by the upper pressing portion 21a of the terminal portion 17a, and the upper surface of the other side in the width direction of the base portion 82 is pressed by the upper pressing portion 21b of the terminal portion 17b. It has been. That is, the upward pressing portions 21a and 21b restrict the upward movement of the base portion 82, and further suppress the backlash of the base portion 82 with respect to the upward direction. The upward pressing portions 21 a and 21 b may contact the upper surface of the base portion 82. It is preferable that the gap between the upward pressing portions 21a and 21b and the upper surface of the base portion 82 is small as long as the mounting of the base portion 82 is not affected. As the gap is reduced, the range in which the base portion 82 moves can be narrowed, and the backlash prevention effect increases.

  As described above, according to the mounting substrate 10, the base portion 82 of the illumination bulb 80 is sandwiched by the support terminal structure 13 including the pair of support terminals 14 a and 14 b, and the pair of bulb terminals 83 and the pair of bulb terminals 83 are paired. Electrical connection with the lands 12a and 12b is formed. That is, since the support terminal structure 13 functions as a socket, the illumination bulb 80 can be stably supported with respect to the substrate body 11 without using the conventional socket 90 (see FIG. 22). For example, the mounting board 10 is suitable as a mounting board for an in-vehicle lighting device, and the cost of the in-vehicle lighting device can be reduced.

In the first embodiment, the lands 12a and 12b are formed on the standing surface 11A of the substrate body 11 and the support terminals 14a and 14b are soldered by the reflow method. As shown, it may be a substrate body 11 _X in which a pair of lands 12a _X and 12b _X are formed on the back surface 11B. In the form illustrated in FIG. 8, lands 12 a _X and 12 b _X are formed on the periphery of the leg insertion holes 24 a and 24 b on the back surface 11 B of the substrate body 11 _X. Further, the wiring 25 _X connected to the lands 12 a _X and 12 b _X is formed inside the substrate body 11 _X.

The leg portions 22a and 22b of the support terminals 14a and 14b are inserted into the leg portion insertion holes 24a and 24b, respectively, and protrude to the back surface 11B side, as in the first embodiment. In the form illustrated in FIG. 8, it is preferable to solder the support terminals 14a and 14b by a flow method using the leg portions 22a and 22b protruding to the back surface 11B side. Soldering flow method, for example, in a solder bath filled with molten solder is carried out by immersing the substrate body 11 _X of the back surface 11B. When the back surface 11B of the substrate body 11 _X is immersed in the solder bath, the molten solder adheres to the lands 12a _X and 12b _X formed at the peripheral edges of the leg portions 22a and 22b and the leg insertion holes 24a and 24b protruding from the back surface 11B. To do. The deposited molten solder by cooling and solidifying, the pair of leg portions 22a, and 22b, a pair of lands 12a _X, and the 12b _X are respectively connected.

Second Embodiment
The illumination valve mounting substrate 30 (hereinafter referred to as the mounting substrate 30) according to the second embodiment of the present invention will be described in detail with reference to FIGS. In the following description, among the support terminals 34a and 34b, components related to the support terminal 34a are marked with “a”, and components related to the support terminal 34b are marked with “b”. Further, in the following, the description overlapping with that of the first embodiment is omitted, and points different from the first embodiment will be described in detail.

  First, the configuration of the mounting substrate 30 will be described in detail with reference to FIGS. 9 to 11.

  9 to 11 are a perspective view, a side view, and a bottom view of the mounting substrate 30, respectively. As shown in FIGS. 9 to 11, the mounting board 30 is formed on the board body 31, a pair of lands 32 a and 32 b formed on the back surface 31 </ b> B of the board body 31, and the standing surface 31 </ b> A of the board body 31. The support terminal structure 33 is fixed. Similar to the support terminal structure 13, the support terminal structure 33 sandwiches the base portion 82 of the lighting bulb 80 from both sides in the thickness direction, and electrically connects the pair of bulb terminals 83 and the pair of lands 32 a and 32 b. To do.

  In the substrate body 31, a pair of lands 32a and 32b are formed on the back surface 31B, and a wiring 45 is formed therein. Further, similarly to the substrate body 11, the substrate body 31 is formed with the illumination valve insertion hole 43 and the leg portion insertion holes 44a and 44b, respectively, but the shapes thereof are different. The illumination bulb insertion hole 43 has a rectangular opening shape. The opening width is set such that the long side is slightly larger than the width of the base portion 82 of the lighting bulb 80 and the short side is smaller than the radial length of the main body portion 81. That is, the illumination bulb insertion hole 43 is a through hole into which the base portion 82 of the illumination bulb 80 can be inserted and the main body portion 81 cannot be inserted. The leg insertion holes 44a and 44b are formed in the same pattern. The leg insertion hole 44a includes a wide through-hole into which the two leg portions 42a are inserted, and a through-hole into which the land 32a is formed at the periphery and into which the one leg portion 42a is inserted.

  The support terminal structure 33 is configured by opposingly arranging a pair of support terminals 34a and 34b having the same shape. Similarly to the support terminal 14a, the support terminal 34a includes a base portion 36a, a terminal portion 37a, and a support portion 38a. The terminal portion 37a and the support portion 38a each have a convex portion 39a that forms the holding gap 35. . The terminal portion 37a is provided with an upward pressing portion 41a, and the base portion 36a is provided with a leg portion 42a.

  On the other hand, the terminal portion 37a differs from the terminal portion 17a in that it does not have the width direction pressing portion 20a. Further, the base portion 36a is different from the base portion 16a in that the width is different between the front side and the rear side and the three leg portions 42a are provided. Similarly to the base portion 16a, the base portion 36a has a flat plate shape that abuts along the standing surface 31A. However, about 2/3 of the rear side, both the left and right sides are cut, and the terminal portion 37a, the support portion 38a, It has a shape reduced to a substantially equivalent width. Further, two leg portions 42a are formed on both the left and right sides of the reduced width portion, and one leg portion 42a is formed by bending the rear end of the base portion 36a.

  The leg portions 42a formed on the left and right sides of the base portion 36a do not protrude from the back surface 31B of the substrate body 31 and are engaged with the inner edges of the wide leg insertion holes 44a. That is, the leg portion 42 a has a function of fixing the support terminal 34 a to the substrate body 31. On the other hand, the leg part 42a formed at the rear end of the base part 36a protrudes toward the back surface 31B through the leg part insertion hole 44a. And the leg part 42a which protruded from the back surface 31B is soldered to the land 32a formed in the periphery of the leg part insertion hole 44a by a flow system.

  Next, with reference to FIG.12 and FIG.13, the mounting form of the illumination valve | bulb 80 is demonstrated. In addition, the function and effect of the mounting substrate 30 will be described.

  FIG. 12 is a diagram illustrating a state in which the illumination bulb 80 is mounted in FIG. 9, and FIG. 13 is a diagram illustrating a state in which the illumination bulb 80 is mounted in FIG. As shown in FIGS. 12 and 13, the mounting form of the lighting bulb 80 on the mounting board 30 is the same as that of the mounting board 10, and the support terminal structure 33 is perpendicular to the board body 31. In this state, the base portion 82 protruding from the standing surface 31A side of the illumination bulb insertion hole 43 is sandwiched from both sides in the thickness direction.

  That is, in the mounting substrate 30, the pair of support terminals 34 a and 34 b arranged to face each other are sandwiched by pressing both sides in the width direction of the main surface 84 from both sides in the thickness direction of the base portion 82 of the lighting bulb 80. The illumination bulb 80 is stably supported with respect to the substrate body 31. On the other hand, since the main body 81 cannot be inserted into the illumination bulb insertion hole 43, the mounting form of the mounting board 30 is different from the mounting form of the mounting board 10 in that the length of the main body 81 protruding from the back surface 31B side is long. Different.

  In the mounting substrate 30, the opening shape of the illumination valve insertion hole 43 is rectangular, and the opening width is reduced to such an extent that the main body portion 81 cannot be inserted, thereby improving the retention of the base portion 82 by the illumination valve insertion hole 43. Yes. That is, the lighting bulb 80 is rattled using the lighting bulb insertion hole 43. Specifically, the inner edge of the illumination bulb insertion hole 43 presses both sides in the width direction of the base portion 82 to restrict the movement in the width direction.

  The inner edge of the illumination bulb insertion hole 43 may contact the side surface of the base portion 82 or may contact the main surface 84. The gap between the inner edge of the illumination bulb insertion hole 43 and the base portion 82 is preferably small as long as the mounting of the base portion 82 is not affected. As the gap is reduced, the range in which the base portion 82 moves can be narrowed, and the backlash prevention effect increases.

<Third Embodiment>
With reference to FIGS. 14 to 17, a mounting board 50 (hereinafter, referred to as a mounting board 50) of an illumination bulb that is a third embodiment of the present invention will be described in detail. Hereinafter, of the support terminals 54a and 54b, “a” is attached to the component related to the support terminal 54a, and “b” is attached to the component related to the support terminal 54b. Further, in the following, description overlapping with the first and second embodiments will be omitted, and differences from the first and second embodiments will be described in detail.

  First, the configuration of the mounting substrate 50 will be described in detail with reference to FIGS. In addition, the mounting form of the illumination bulb 80 and the operational effects of the mounting substrate 50 will be described as appropriate.

  14 and 15 are a perspective view and a bottom view, respectively, of the mounting substrate 50, and FIG. 16 is a view of the support terminal 54a viewed from the support terminal 54b side (the support terminal 54b is omitted, and the substrate body 51 is shown). (Shown by a one-dot chain line). As shown in FIGS. 14 to 16, the mounting substrate 50 is erected on the substrate body 51, a pair of lands 52 a and 52 b formed on the standing surface 51 </ b> A of the substrate body 51, and the substrate body 51. A support terminal structure 53. Similar to the support terminal structure 13, the support terminal structure 53 sandwiches the base portion 82 of the lighting bulb 80 from both sides in the thickness direction, and electrically connects the pair of bulb terminals 83 and the pair of lands 52 a and 52 b. To do.

  Similar to the substrate body 11, a pair of lands 52 a and 52 b and a plurality of wirings 65 are formed on the substrate body 51 on the standing surface 51 </ b> A. The pair of lands 52a and 52b are formed in two each in the same pattern. The substrate body 51 is formed with an illumination bulb insertion hole 63 and leg portion insertion holes 64a and 64b, respectively. The illumination bulb insertion hole 63 has a rectangular opening shape, similar to the illumination bulb insertion hole 43, but the opening width is set larger than the radial length of the main body portion 81.

  The leg insertion holes 64a and 64b are formed in two each in the same pattern. The two leg portion insertion holes 64a are formed so as to face each other with the illumination bulb insertion hole 63 interposed therebetween. And the land 52a is formed in the periphery of the leg part penetration hole 64a, respectively. In other words, the lands 52a are arranged to face each other with the illumination bulb insertion hole 63 interposed therebetween.

  The support terminal structure 53 is configured by opposingly arranging a pair of support terminals 54a and 54b having the same shape as in the above embodiments. However, in the support terminal structure 53, when the lighting bulb 80 is mounted, the support terminal 54a is located on one side in the width direction of the base portion 82, and the support terminal 54b is located on the other side in the width direction of the base portion 82. Thus, it has the form arranged facing each other.

  That is, the support terminal 54a has a configuration in which the base portion 82 can be clamped from both sides by abutting the one valve terminal 83 on one side in the width direction of the base portion 82 and pressing each main surface 84. Similarly, the support terminal 54b has a configuration in which, on the other side in the width direction of the base portion 82, the base portion 82 can be clamped from both sides by abutting against the other valve terminal 83 and pressing each main surface 84. Thus, in the support terminal structure 53, unlike each of the above embodiments, each of the support terminals 54a and 54b sandwiches the base portion 82 of the lighting bulb 80 from both sides in the thickness direction.

  Specifically, the support terminal 54 a includes two base portions 56 a that are fixed to the substrate body 51 and two terminal portions 57 a that are erected on the substrate body 51. Each base portion 56 a is provided with a leg portion 62 a, and each leg portion 62 a is soldered to a land 52 a that is opposed to the illumination bulb insertion hole 63. The terminal portions 57a are arranged to face each other so as to come into contact with different main surfaces 84. For example, the convex gaps 59a formed corresponding to the concave portions 86 form a sandwiching gap 55 between the terminal portions 57a. Provided. And each terminal part 57a is connected by the width direction pressing part 60a. The width direction pressing portion 60a has a shape extending to the standing surface 51A along the vertical direction, connects and integrates the terminal portions 57a, and restricts the movement of the base portion 82 in the width direction.

  One terminal portion 57 a abuts on one valve terminal 83. The valve terminal 83 is electrically connected to one land 52a through one terminal portion 57a and one base portion 56a. Moreover, since the one terminal part 57a is connected with the other terminal part 57a by the width direction pressing part 60a, the valve terminal 83 is also electrically connected to the other land 52a. In the form illustrated in FIG. 14, the linear wiring 65 is connected to any land 52 a. In this embodiment, for example, with respect to the support terminals 54a and 54b, lead wires or the like drawn to the outside can be connected to the wiring 65 on the same side.

  Here, the configuration of the support terminal 54a will be supplementarily described.

  As shown in FIG. 16, the support terminal 54 a has a configuration in which the terminal portions 57 a connected by the width direction pressing portion 60 a are arranged to face each other, and a holding gap 55 is formed between the terminal portions 57 a. The base portion 56a has a flat plate-shaped portion that abuts along the back surface 51B, and a leg portion 62a extending vertically upward is provided at one end of the flat plate-shaped portion. The leg 62a protrudes toward the standing surface 51A through the leg insertion hole 64a and is soldered to a land 52a formed on the standing surface 51A. From the other end of the flat plate-shaped portion, a terminal portion 57a extends vertically upward along the inner edge of the illumination bulb insertion hole 63. The terminal portion 57a is bent in the direction of the opposing terminal portion 57a in the vicinity of the standing surface 51A, extends obliquely upward, is folded back at a predetermined height (for example, a height corresponding to the concave portion 86), and is a convex portion. 59a is formed.

  From the upper end of the width direction pressing portion 60a, an upper pressing portion 61a extending in the direction of the support terminal 54b is provided substantially parallel to the standing surface 51A. The upper surface of the part 82 is pressed to restrict the upward movement of the base part 82. Note that the tip of the upward pressing portion 61a has a shape that warps upward. This warping is formed in a division process described later.

  Next, a part of manufacturing process of the mounting substrate 50 will be described with reference to FIG.

  FIG. 17 is a view showing a semi-finished product 50P of the mounting substrate 50. As shown in FIG. As shown in FIG. 17, the integrated terminal 53 </ b> P before the support terminals 54 a and 54 b are divided is fixed to the substrate body 51. The integrated terminal 53P has a connecting portion 61P that connects the support terminals 54a and 54b. The integrated terminal 53P is fixed to the board body 51 by, for example, soldering the leg portions 62a and 62b and the lands 52a and 52b, respectively.

  The connecting portion 61P is a flat plate that connects the upper end of the width direction pressing portion 60a of the support terminal 54a and the upper end of the width direction pressing portion 60b of the support terminal 54b, and forms the upper surface of the integrated terminal 53P. The connecting portion 61P is cut at an intermediate position between the support terminals 54a and 54b after the integrated terminal 53P is soldered to the board body 51. Then, the integrated terminal 53P is divided into the support terminals 54a and 54b, and the support terminal structure 53 is formed.

  That is, the support terminal structure 53 is soldered to the board body 51 in the form of an integrated terminal 53P in which the support terminals 54a and 54b are integrated, and then the connecting portion 61P is cut to support the integrated terminal 53P. It is formed by dividing into terminals 54a and 54b. And the cut | disconnected connection part 61P turns into upper direction press part 61a, 61b. According to such a manufacturing process, the number of components to be placed on the substrate main body 51 is reduced. Therefore, particularly when the number of components to be mounted is small, it greatly contributes to shortening the placement time.

  The mounting form of the lighting bulb 80 on the mounting board 50 is the same as in each of the embodiments described above, in which the lighting terminal 80 is vertically installed on the board body 51 and the support terminal structure 53 is inserted into the lighting bulb. In this configuration, the base portion 82 protruding from the side of the standing surface 51A of the hole 63 is sandwiched from both sides in the thickness direction.

  The design of the above embodiment can be changed as appropriate without departing from the object of the present invention.

  Hereinafter, an example of the design change (modified example) will be described with reference to FIGS. 18 and 19 are schematic views of the mounting form of the illumination bulb 80 as viewed from above, and show only a part of the base portion 82 and the support terminal structure (support). FIG. 20 is a side view of the mounting form of the illumination bulb 80. FIG.

  For example, in the above embodiment, the pair of support terminals constituting the support terminal structure has been described as having the same shape. However, as shown in FIG. 18, the support terminal structure has a pair of support having different shapes. You may comprise from terminal 70a, 70b. In the form illustrated in FIG. 18, the support terminal 70a includes a terminal portion 71a that contacts the valve terminal 83 and a support portion 72a, and a width direction pressing portion 73a is provided in each of the terminal portion 71a and the support portion 72a. ing. On the other hand, the support terminal 70b includes a terminal portion 71b and a support portion 72b that do not have the width direction pressing portion 73a.

  In the above-described embodiment, the base portion 82 of the lighting bulb 80 has been described as being supported only by the support terminal structure. However, as shown in FIG. 19, the support terminal configured by a pair of support terminals 74a and 74b. In addition to the structure, a support body 75 may be provided. In FIG. 19, a pair of valve terminals 83 are drawn out on one main surface 84 of the base portion 82, and the pair of support terminals 74 a and 74 b are in contact with the one main surface 84, respectively. Yes. The support body 75 is in contact with the other main surface 84. That is, there is a mounting form in which the base portion 82 is sandwiched from both sides in the thickness direction by arranging the respective members so that the pair of support terminals 74a and 74b and the support body 75 are in contact with different main surfaces 84, respectively. can get. In addition, the support body 75 is not limited to a metal plate, For example, you may be comprised from the resin plate with high heat resistance.

  Moreover, although the said embodiment demonstrated as what the illumination valve insertion hole was formed in a board | substrate body, as shown in FIG. 20, you may use the board | substrate body 76 which does not have an illumination valve penetration hole. In FIG. 20, the illumination bulb 80 has a form in which the cylindrical portion 85 is not provided and the concave portion 86 is formed over the entire width of the main surface 84, and the pair of support terminals 77 a and 77 b includes the concave portions. The mounting form fitted to 86 is shown. The pair of support terminals 77a and 77b are made of, for example, a wide metal plate that can contact the entire width of the main surface 84.

  Moreover, although the said embodiment demonstrated as what the leg part was provided in the base, when soldering by a reflow system, a form which does not have a leg part may be sufficient as a support terminal. The support terminals are preferably soldered to the substrate body by a reflow method or a flow method, but may be fixed using an adhesive such as a conductive adhesive.

  10, 30, 50 Lighting bulb mounting substrate, 11, 31, 51 Substrate body, 11A, 31A, 51A Standing surface, 11B, 31B, 51B Back surface, 12a, 12b, 32a, 32b, 52a, 52b Land, 13 , 33, 53 Support terminal structure, 14a, 14b, 34a, 34b, 54a, 54b Support terminal, 15, 35, 55 Holding gap, 16a, 16b, 36a, 36b, 56a, 56b Base, 17a, 17b, 37a, 37b, 57a, 57b Terminal part, 18a, 18b, 38a, 38b Support part, 19a, 19b, 39a, 39b, 59a, 59b Convex part, 20a, 20b, 60a, 60b Width direction pressing part, 21a, 21b, 41a , 41b, 61a, 61b Upward pressing part, 22a, 22b, 42a, 42b, 62a, 62b Leg part, 3, 43, 63 Lighting valve insertion hole, 24a, 24b, 44a, 44b, 64a, 64b Leg insertion hole, 25, 45, 65 Wiring, 50P Semi-finished product, 53P integrated terminal, 61P connection part, 80 Lighting bulb, 81 body part, 82 base part, 83 valve terminal, 84 main surface, 85 columnar part, 86 concave part, 90 socket.

Claims (12)

A substrate for mounting an illumination bulb including a body portion enclosing a filament and a base portion having an outer shape smaller than the body portion, and a pair of bulb terminals connected to the filament drawn on the base portion,
A substrate body;
A pair of lands formed on the substrate body;
A plurality of supports fixed on the substrate body and supporting the base portion of the lighting bulb;
With
The plurality of supports are mounting boards for an illumination bulb having a support terminal structure including a pair of support terminals that electrically connect a pair of bulb terminals and a pair of lands, respectively. The mounting substrate according to claim 1,
The lighting bulb has a form in which the base portion has a flat shape and a pair of bulb terminals are drawn on the main surface along the width direction of the base portion,
The pair of support terminals is composed of a metal plate standing at least partially on the substrate body,
The support terminal structure is a lighting bulb mounting substrate having a clamping gap in which the base portion can be clamped from both sides in the thickness direction with the lighting bulb standing on the substrate body. The mounting board according to claim 2,
Support terminal structure
A first support terminal that is in contact with one valve terminal on one side in the width direction of the base portion and presses each main surface to sandwich the base portion from both sides in the thickness direction;
On the other side in the width direction of the base portion, a second support terminal that abuts the other valve terminal and presses each main surface to clamp the base portion from both sides in the thickness direction;
A mounting board for an illumination bulb that is configured by the above, and a holding gap is provided in each support terminal. The mounting board according to claim 2,
Each bulb terminal of the lighting bulb is pulled out on the main surface located on the opposite side,
The sandwiching gap between the support terminal structures is provided between the support terminals by arranging the support terminals to face each other with the gap between the support parts narrower than the thickness of the base portion.
At least one of the support terminals is an illumination bulb mounting substrate that is elastically deformable in a direction away from each other in the holding gap. The mounting substrate according to claim 2 or 4,
Each support terminal is opposed to be in contact with a different main surface,
A base fixed on the substrate body;
A terminal portion that extends from one end of the base, is bent so as to stand on the substrate body, contacts the valve terminal, and presses one side in the width direction of the main surface;
A support part that extends separately from the terminal part from one end of the base part, is bent so as to stand on the substrate body, and presses the other side in the width direction of the main surface;
Each lighting bulb mounting board. The mounting substrate according to claim 5,
At least a part of the base part is a mounting board for an illumination bulb that has a flat plate shape that can be brought into contact with a standing surface of a substrate body on which a support terminal stands. A mounting substrate according to any one of claims 2 to 6,
At least one of the support terminals is a lighting bulb mounting substrate including a width direction pressing portion that holds one side or both sides of the base portion in the width direction. The mounting substrate according to any one of claims 2 to 7,
The substrate body is formed with an illumination bulb insertion hole through which at least the base portion can be inserted,
Each support terminal is a lighting bulb mounting substrate disposed on the periphery of the lighting bulb insertion hole so that the base portion protruding from the lighting bulb insertion hole can be sandwiched from both sides in the thickness direction. The mounting substrate according to claim 8,
At least one of the support terminals is a lighting bulb mounting substrate including an upward pressing portion that presses the upper surface of the base portion protruding from the through hole. A mounting substrate according to any one of claims 2 to 9,
The support terminal structure is a lighting bulb mounting substrate formed by fixing the support terminals on the substrate body in the form of integrated terminals in which the support terminals are integrated, and then dividing the integrated terminal into the support terminals. It is a mounting substrate of any one of Claims 2-10,
Each land is formed on the standing surface of the substrate body on which each support terminal stands,
Each support terminal is a lighting bulb mounting board that is soldered to the corresponding land by a reflow method. It is a mounting substrate of any one of Claims 2-10,
Each land is formed on the back surface opposite to the standing surface of the substrate body on which each support terminal stands,
Each support terminal is a substrate for mounting an illumination bulb in which a part of the support terminal protrudes from the insertion hole formed in the substrate body to the back side, and the protruding portion is soldered to the corresponding land by a flow method.

Images