COLUMN-TYPE STRUCTURE

Abstract

The invention proposes a columnar structure that allows the fabrication step to proceed smoothly while maintaining the original shape and dimensions even when stresses are generated during fabrication or similar processes. The columnar structure has a long shape comprising: a long side surface; several grooves formed along at least one part of the side surface in the longitudinal direction and spaced apart; and a conductive part formed on at least one part of the groove surface of at least one of the several grooves, the conductive part formed in the longitudinal direction of the groove.

Description

columnar structure

[0001] The present invention relates to a pillar structure.

[0002] 2. Description of the Related Art Structures having patterned circuits formed on their surfaces are known.

[0003] Japanese Patent Application Laid-Open No. 2014-146447

[0004] During manufacturing processes such as molding insulating materials such as resins and ceramics into structures or forming conductors on the surfaces of structures, stress may be applied to the structures due to heat or other factors. The application of stress may result in the structure being finished in a shape that is deviated from the originally intended shape. When a structure has a deviated shape, it can be difficult to appropriately determine the position to be processed in subsequent processes. For example, it can be difficult to attach components to desired positions. This problem is particularly noticeable in columnar structures, which are prone to becoming deviated due to stress.

[0005] The present invention has been made in view of the above points, and an object of the present invention is to provide a columnar structure that can maintain its original shape and allow the manufacturing process to proceed smoothly even when stress is generated during the manufacturing process.

[0006] A feature of the columnar structure according to the present invention is that it is a columnar structure having an elongated shape, comprising: an elongated side portion; a plurality of groove portions formed along at least a portion of the longitudinal direction of the side portion and spaced apart from each other; and a conductor formed on at least a portion of the groove surface of at least one of the plurality of groove portions, the conductor being formed along the longitudinal direction of the groove portion.

[0007] By forming a plurality of grooves, the original shape can be maintained, and the manufacturing process can proceed smoothly.

[0008] 1A is a perspective view (a) seen from the front and a perspective view (b) seen from the back showing the structure of a elongated structure 10 according to a first embodiment. FIG. 1B is a front view (a), a rear view (b), and a side view (c) showing the structure of a elongated structure 10 according to the first embodiment. FIG. 1C is a plan view showing the structure of a elongated structure 10 according to the first embodiment. FIG. 1D is a perspective view (a) seen from the front and a perspective view (b) seen from the back showing the structure of a elongated structure 20 according to a second embodiment. FIG. 1E is a front view (a) and a rear view (b) showing the structure of a elongated structure 20 according to a second embodiment. FIG. 1F is a plan view showing the structure of a elongated structure 20 according to the second embodiment. FIG. 1G is a perspective view (a) seen from the front and a perspective view (b) seen from the back showing the structure of a elongated structure 30 according to a third embodiment. FIG. 1H is a front view (a) and a rear view (b) ... plan view showing the structure of a elongated structure 30 according to a third embodiment. 10A and 10B are a front perspective view and a rear perspective view, respectively, showing the structure of a long structure 40 according to a fourth embodiment; a front view showing the structure of a long structure 40 according to a fourth embodiment; a plan view showing the structure of a long structure 40 according to a fourth embodiment; and a perspective view showing the structure of a long structure 50 according to a fifth embodiment.

[0009] <<<<<<Outline of the Present Embodiment>>>>>> <<First Feature>> According to the first feature, a columnar structure having an elongated shape (for example, elongated structures 10, 20, 30, 40, 50, etc., described later) includes: elongated side portions (for example, side portions 110a, 110b, 210a, 210b, 310a, 310b, 410a, 410b, 510a, 510b, etc., described later); a plurality of grooves (for example, first groove 112a and second groove 112b, etc., described later) formed along at least a part of the longitudinal direction of the side portion and spaced apart from each other; a conductor formed on at least a part of a groove surface (for example, inclined surfaces 114a and 114b, etc., described later) of at least one of the plurality of grooves, the conductor being formed along the longitudinal direction of the groove (for example, first conductor 132a and second conductor 132b, etc., described later); A pillar structure comprising:

[0010] The columnar structure has an elongated shape and includes a side surface, a plurality of grooves, and a conductor.

[0011] The side surface portion has an elongated shape. The plurality of grooves extend along at least a portion of the longitudinal direction of the side surface portion. The plurality of grooves extend while being spaced apart from one another.

[0012] The conductor is formed on at least a portion of the groove surface of at least one of the plurality of grooves. The groove in which the conductor is formed may be only one of the plurality of grooves. It is sufficient that the conductor is formed on at least a portion of the groove surface. The conductor may be formed over the entire groove surface. The groove may include at least one region in which the conductor is formed and at least one region in which the conductor is not formed.

[0013] Forming multiple grooves along the longitudinal direction of the columnar structure increases its rigidity. For example, even if stress is applied during the manufacturing process, the presence of multiple grooves can disperse the stress. The multiple grooves prevent warping due to stress applied during the manufacturing process, making it easier for the columnar structure to maintain its original shape. Maintaining the shape allows conductors to be accurately formed even in the recesses of the grooves, preventing contact with other components and preventing wear and damage to the conductor. Forming the grooves increases the area in which conductors can be formed, making it easier for the conductors to remain even if part of the conductor is worn or damaged due to contact with other components, maintaining the electrical connection of the conductor and stabilizing the circuit. Furthermore, forming the grooves increases the area of ​​the conductor, increasing the contact area with air and thereby improving heat dissipation efficiency.

[0014] <<Second Feature>> The second feature is that, in the first feature, the electrical connector further includes a first end (for example, first end 102, 302, 402, 502, etc., which will be described later), and a second end (for example, second end 104, 204, 304, 404, 504, etc., which will be described later) which is spaced apart from the first end along the longitudinal direction and which is located between the first end and the second end along the longitudinal direction, with the groove portion sandwiched between the first end and the second end, and the electrical conductor is formed by extending along the longitudinal direction from the first end to any position between the first end and the second end.

[0015] Conductors need only be provided in desired and necessary locations, and the amount of conductive material can be reduced.

[0016] <<Third Feature>> The third feature is the second feature, wherein the first end portion has an end face extending in a direction different from the longitudinal direction and on which an electronic component can be mounted (for example, end faces 120, 320, 420, 520 described later), and the end face has a connection terminal portion (for example, first connection terminal portions 134a and 134b described later) that is electrically connected to the conductor and enables electrical connection with the electronic component.

[0017] By providing electronic components on the end faces, the end faces can be effectively utilized. In addition, by incorporating a columnar structure with electronic components, it is possible to provide a device that makes it easier to point or approach the electronic components to an object, etc.

[0018] <<Fourth Feature>> The fourth feature is that, in the first to third features, the plurality of grooves are formed on the side surface portion in pairs of two different grooves (for example, first groove 112a and second groove 112b described below) facing each other.

[0019] By forming two grooves as a pair, the stress generated on one groove side and the stress generated on the other groove side can be canceled out, and by balancing them, deformation can be made less likely to occur.

[0020] <<Fifth Feature>> The fifth feature is the first to fourth features, wherein the conductor has a connection terminal portion (e.g., second connection terminal portions 136a and 136b described later) on at least a part of the side surface portion, which enables electrical connection with an electronic component.

[0021] Electronic components for forming an electronic circuit can be provided in the region from the first end to the second end (at least a part of the side surface), making effective use of unused regions. Furthermore, electronic components can be placed close to each other, reducing the effects of noise and the like.

[0022] <<<<<<Details of the Present Embodiment>>>>>> The present embodiment will be described below with reference to the drawings.

[0023] <<<<<Directions, etc.>>>> Directions will be defined. The following definitions have been assigned for the sake of convenience in explaining this embodiment and do not limit this embodiment. <Longitudinal direction (axial direction, up-down direction)> The longitudinal direction (axial direction, up-down direction) indicates the direction in which the elongated structures 10, 20, 30, 40, 50 extend. The elongated structures 10, 20, 30, 40, 50 have shapes that are elongated in the longitudinal direction. For example, the longitudinal direction refers to the direction along the central axis O (described below) of the elongated structures 10, 20, 30, 40, 50. Of the two directions along the central axis O, one may be designated as the upward direction and the opposite direction may be designated as the downward direction, or vice versa.

[0024] <Front-rear direction> The front-rear direction is a direction perpendicular to the longitudinal direction and perpendicular to the grooves formed in the elongated structures 10, 20, 30, 40, and 50. Specifically, the front-rear direction may be defined as the direction away from the central axis O along an imaginary line connecting the valley bottoms of the grooves and the central axis O. One of the two directions along the imaginary line may be defined as the front direction and the opposite direction as the rear direction, or vice versa.

[0025] In particular, when the elongated structures 10, 20, 30, 40, and 50 have paired grooves, the front-rear direction can be a direction that virtually connects the valley bottoms of the paired grooves. The valley bottoms are the deepest parts of the grooves. Note that, when the valley bottoms have a flat, planar shape, the front-rear direction can be a direction that virtually connects the centers of the valley bottoms in a direction perpendicular to the longitudinal direction.

[0026] The front-rear direction may be a direction perpendicular to the surface having the conductor 130 formed on the elongated structure 10, 20, 30, 40, 50. The front-rear direction may be a direction away from the central axis O along an imaginary line connecting the center line of the width (length perpendicular to the longitudinal direction) of the formed conductor 130 and the central axis O.

[0027] <Lateral direction> This refers to a direction perpendicular to the longitudinal direction and perpendicular to the front-to-rear direction. The lateral direction is a direction perpendicular to a side portion where no grooves are formed or a side portion where the conductor 130 or the like is not formed. The lateral direction may be defined as a direction away from the central axis O along an imaginary line connecting the center line of the width (length in the direction perpendicular to the longitudinal direction) of the side portion where no grooves are formed or the side portion where the conductor 130 or the like is not formed to the central axis O.

[0028] In particular, the direction may be a direction connecting opposing side portions where no grooves are formed, or opposing side portions where no conductors 130 or the like are formed.

[0029] <<<<<First embodiment>>>> Figure 1 is a perspective view (a) seen from the front and a perspective view (b) seen from the back showing the structure of a long structure 10 according to a first embodiment. Figure 2 is a front view (a), a back view (b), and a side view (c) showing the structure of the long structure 10 according to the first embodiment. Figure 3 is a plan view showing the structure of the long structure 10 according to the first embodiment.

[0030] The elongated structure 10 according to the first embodiment mainly includes a columnar body 100 and a conductor 130. Various electronic components such as electronic components EP1 and EP2 can be provided in the elongated structure 10. The elongated structure 10 can be provided as a component equipped with the electronic components EP1 and EP2. An electronic circuit is formed in the elongated structure 10 by the conductor 130 and the electronic components EP1 and EP2.

[0031] <<<Columnar Body 100>>> The columnar body 100 has a columnar shape (see FIGS. 1 and 2). The columnar body 100 has an elongated shape. The columnar body 100 extends linearly along the longitudinal direction. The columnar body 100 may be cylindrical, rectangular, flat, or a combination of multiple shapes, as long as it has an elongated columnar shape overall. The columnar body 100 may not have a flat surface, but may have an uneven surface, as long as it has a shape that can be recognized as a column overall.

[0032] <Length of columnar body 100> The columnar body 100 has a desired length. The length of the columnar body 100 may be determined appropriately depending on the type of component to which the elongated structure 10 is attached, the desired strength, the environment in which it is used, the size and type of electronic components to be mounted, and the like.

[0033] <Cutting the elongated structure 10> The length of the elongated structure 10 can be changed as needed by cutting the elongated structure 10. In particular, it is preferable that the user can fold and tear it off by hand or the like to obtain the desired length. The length of the elongated structure 10 can be adjusted as needed depending on the shape of the device to which the elongated structure 10 is attached, etc.

[0034] <Thickness of the columnar body 100> The columnar body 100 has a desired thickness. The thickness of the columnar body 100 may be determined appropriately depending on the desired strength, the environment in which it will be used, the size and type of electronic components to be mounted, etc. The thickness of the columnar body 100 may be constant or may vary along the longitudinal direction.

[0035] <Aspect Ratio> The ratio of the length to the thickness (aspect ratio) of the columnar body 100 may be greater than 1.0, and may be 5.0 or greater. A large aspect ratio of the columnar body 100 facilitates joining with a holding member in a deep, narrow space. In addition, by increasing the aspect ratio, the long columnar body 100 itself can be used as a guide member, making it easier to guide and position it to the desired position. Furthermore, having a long columnar body 100 makes it easier to fine-tune the position relative to the desired position. Furthermore, the contact area with the holding member can be increased, allowing for stable holding.

[0036] As described above, the elongated structure 10 can be cut to a desired length. When the pillar 100 is manufactured to be compatible with a specific device, the aspect ratio of the pillar 100 may be reduced depending on the structure of the specific device. On the other hand, when the pillar 100 is manufactured to be versatile and compatible with various devices, it is preferable to increase the aspect ratio of the pillar 100 so that it can be cut to a desired length. The aspect ratio of the pillar 100 may be determined appropriately depending on the structure and purpose of the device in which the elongated structure 10 is used. By increasing the aspect ratio of the pillar 100, even if stress is applied during the manufacturing process, the pillar 100 can be finished into a desired shape without deviating from the originally intended shape by providing the first groove 112a and the second groove 112b (described below).

[0037] <Central Axis O> The pillar 100 has a central axis O. The central axis O is an imaginary axis that extends linearly along the longitudinal direction (axial direction) of the pillar 100. The central axis O is formed by connecting the centers of the pillars 100 on a plane (cross section of the pillar 100) perpendicular to the longitudinal direction (axial direction) of the pillar 100. Even if the surface of the pillar 100 has irregularities, the center of the pillar 100 may be substantially the average center of the cross section of the pillar 100. Note that the central axis O does not need to pass through the center of the pillar 100, as long as it is a line that can indicate the direction in which the pillar 100 extends.

[0038] <<First End 102 and Second End 104>> The columnar body 100 has two ends in the longitudinal direction, that is, a first end 102 and a second end 104 (see FIGS. 1 and 2).

[0039] <First end portion 102> The first end portion 102 is mainly an end portion on the side of the end face 120 on which the electronic component EP1 is provided. The first end portion 102 is on the tip side of the elongated structure 10 when the elongated structure 10 is in use.

[0040] <Second End 104> The second end 104 is primarily an end for holding the elongated structure 10 on a holding member (not shown) or the like. By holding the elongated structure 10 on the holding member, the first conductor 132a and the second conductor 132b (described later) can be electrically connected to electrodes (not shown) of the holding member. The electrical connection with the first conductor 132a and the second conductor 132b allows power to be supplied from a power source PS (not shown) or the like to the electronic component EP1 or the like. Note that the electrical connection may be used not only for power supply but also for inputting and outputting control signals and the like.

[0041] <<Side Surface 110>> The pillar 100 has a side surface 110. The side surface 110 extends along the central axis O. The side surface 110 has an elongated shape. The side surface 110 surrounds the central axis O to define the side surface of the pillar 100.

[0042] <Side surfaces 110a, 110b, 110c, 110d> The side surface 110 has four side surfaces: a first side surface 110a, a second side surface 110b, a third side surface 110c, and a fourth side surface 110d. When it is not necessary to distinguish between the side surfaces 110a to 110d or when they cannot be distinguished, they are simply referred to as side surfaces 110. Each of the side surfaces 110a to 110d has an elongated shape. Various components and members, such as an electronic component EP2, can be provided on the side surfaces 110a to 110d. The various components and members may be fixedly provided on the side surfaces 110a to 110d or detachably provided on the side surfaces 110a to 110d. The various components and members may be provided on at least one of the side surfaces 110a to 110d as needed. They may be provided on any of the side surfaces 110a to 110d as appropriate depending on the size, shape, number and function of the various parts and members.

[0043] <First Side Surface 110a and Second Side Surface 110b> The first side surface 110a and the second side surface 110b extend opposite to each other across the central axis O. The first side surface 110a and the second side surface 110b have an elongated shape. Grooves 112 (described later) and conductors 130 (described later) are formed on the first side surface 110a and the second side surface 110b.

[0044] <Third Side Surface 110c and Fourth Side Surface 110d> The third side surface 110c and the fourth side surface 110d extend opposite to each other across the central axis O. The third side surface 110c and the fourth side surface 110d have an elongated shape. The conductor 130 is not formed on the third side surface 110c and the fourth side surface 110d. The third side surface 110c and the fourth side surface 110d have a shape of a part of the side surface of a cylinder excluding the flat portion 122. The third side surface 110c and the fourth side surface 110d have a shape that is curved around the central axis O and bulges in a direction away from the central axis O. By making the shape bulge in a direction away from the central axis O, the columnar body 100 can be made thicker, thereby increasing the strength of the columnar body 100.

[0045] The third side surface 110c and the fourth side surface 110d do not have to have the shape of a cylindrical side surface. The third side surface 110c and the fourth side surface 110d may have the shape of a rectangular tube side surface (flat surface). The third side surface 110c and the fourth side surface 110d may have a groove portion 112 or a conductor 130 formed in them.

[0046] <<Groove 112, valley bottom 113, inclined surface 114, and peak 115>> The side surface 110 has a groove 112. The groove 112 is formed to extend along the longitudinal direction of the side surface 110. The groove 112 has a V-shaped cross-sectional shape along the cross section of the pillar 100 (see FIG. 3 ). The cross section of the pillar 100 is a plane perpendicular to the longitudinal direction (axial direction) of the pillar 100.

[0047] The groove 112 has a valley bottom 113 and two inclined surfaces 114 that sandwich the valley bottom 113. The valley bottom 113 is the deepest part of the groove 112. In other words, the valley bottom 113 is the part that is closest to the central axis O. The valley bottom 113 and the two inclined surfaces 114 extend along the longitudinal direction of the groove 112.

[0048] The angle formed by the two inclined surfaces 114 sandwiching the valley bottom 113 may be appropriately determined depending on the desired strength of the columnar body 100, etc. In particular, the angle Θ (see FIG. 3 ) formed by the two inclined surfaces 114 sandwiching the valley bottom 113 is preferably 60 degrees or greater. The first conductor 132a and the second conductor 132b (described below) can be accurately formed not only on the two inclined surfaces 114 but also up to the valley bottom 113. The entire first conductor 132a and the second conductor 132b formed on the two inclined surfaces 114 can be maintained electrically connected and function as a conductive region. The first conductor 132a and the second conductor 132b only need to be formed on at least a portion of the two inclined surfaces 114.

[0049] The groove 112 has an apex 115 (see FIG. 3 ). The apex 115 extends as a peak of the groove 112 at the portion of the groove 112 farthest from the valley bottom 113 (the portion farthest from the central axis O). The apex 115 extends along the longitudinal direction of the groove 112.

[0050] The cross-sectional shape of the groove 112 may be U-shaped. Even when the cross-sectional shape of the groove 112 is U-shaped, the valley bottom 113 can be the deepest part of the groove 112. The cross-sectional shape of the groove 112 may be a shape consisting of a flat bottom surface and two wall surfaces that face each other parallel to each other and extend perpendicularly from the bottom surface, sandwiching the bottom surface. When the cross-sectional shape of the groove 112 is a shape consisting of a flat bottom surface and two wall surfaces sandwiching the bottom surface, the valley bottom 113 may be the center part of the bottom surface extending in the longitudinal direction. The cross-section of the groove 112 may have any shape as long as it is recessed toward the central axis O.

[0051] <First Groove 112a and Second Groove 112b> The first side surface 110a has a first groove 112a (see FIGS. 1, 2, and 3). The first groove 112a extends linearly along the longitudinal direction of the first side surface 110a from the first end 102 to the second end 104, excluding the flat portion 116. That is, the first groove 112a extends along the longitudinal direction of the first side surface 110a, sandwiching the flat portion 116 therebetween. The first groove 112a extends into two regions that are spaced apart from each other: a region from the first end 102 to the flat portion 116, and a region from the flat portion 116 to the second end 104. The flat portion 116 is formed between the region from the first end 102 to the second end 104.

[0052] The second side surface 110b has a second groove 112b that extends continuously and linearly along the longitudinal direction of the second side surface 110b from the first end 102 to the second end 104.

[0053] The first groove 112a and the second groove 112b extend opposite to each other across the central axis O (see FIG. 3). The first groove 112a and the second groove 112b have the same cross-sectional shape. The first groove 112a and the second groove 112b are formed to extend along the longitudinal direction of the first side surface 110a and the second side surface 110b, respectively. The first groove 112a and the second groove 112b have a V-shaped cross-sectional shape along the cross section of the columnar body 100.

[0054] The first groove 112a has a valley bottom 113a. The second groove 112b has a valley bottom 113b. The valley bottom 113a of the first groove 112a and the valley bottom 113b of the second groove 112b face each other across the central axis O (see FIG. 3).

[0055] <Groove Pair Comprising First Groove 112a and Second Groove 112b> The first groove 112a extends from the first end 102 to the second end 104, excluding the flat portion 116. On the other hand, the second groove 112b extends from the first end 102 to the second end 104. The first groove 112a and the second groove 112b face each other to form a groove pair, excluding the flat portion 116. In this way, the first groove 112a and the second groove 112b do not need to face each other over the entire distance from the first end 102 to the second end 104, as long as they face each other at least partially to form a groove pair.

[0056] The first groove 112a and the second groove 112b may have the same cross-sectional shape or different cross-sectional shapes. The depth and width of the first groove 112a and the second groove 112b may be determined appropriately depending on the environment in which they are used, the type of electronic components to be mounted, and the like. The depth and width of the first groove 112a and the second groove 112b may be the same or different along the longitudinal direction. When there is no need to distinguish between the first groove 112a and the second groove 112b or when they cannot be distinguished, they are simply referred to as groove 112.

[0057] <Flat portion 116> The first side surface 110a has one flat portion 116 (see FIGS. 1A and 2A). An electronic component EP2 is provided on the flat portion 116. The flat portion 116 has a flat, planar shape. By making the flat portion 116 have a flat, planar shape, it becomes easier to attach the connection terminals (not shown) of the electronic component EP2 to the flat portion 116, thereby improving the efficiency of the installation work of the electronic component EP2. Furthermore, by making the flat portion 116 have a flat, planar shape, it becomes easier to form an electrical connection with the connection terminals of the electronic component EP2, and the electrical connection state can be maintained stably.

[0058] In this embodiment, the electrical connection state refers to a state in which, when an electronic component (described later) is mounted on a structure, power is supplied to the electronic component and the electronic component can operate as an electronic component. For example, whether or not an electrical connection has been established can be confirmed by measuring voltage values, waveforms, etc. using various measuring devices such as a commercially available tester or oscilloscope.

[0059] The flat portion 116 is formed on a portion of the first side surface 110a. The flat portion 116 is provided between the first end portion 102 and the second end portion 104. The flat portion 116 is provided closer to the first end portion 102 than the second end portion 104. By providing the flat portion 116 closer to the first end portion 102 than the second end portion 104, the distance between the electronic components EP1 and EP2 can be shortened. By shortening the distance between the electronic components EP1 and EP2, the influence of noise and the like can be reduced, allowing a stable power supply to the electronic component EP1. The number of flat portions 116 is not limited to one and may be determined appropriately depending on the type and function of the electronic component EP1 to be mounted on the elongated structure 10. Furthermore, the flat portion 116 may be provided not only on the first side surface 110a but also on the second side surface 110b depending on the type and function of the electronic component EP1 to be mounted on the elongated structure 10.

[0060] The length of the flat portion 116 along the longitudinal direction may be determined appropriately according to the size, shape, etc. of the electronic component EP2.

[0061] It is also possible to eliminate the need for the flat portion 116. Whether or not to form the flat portion 116 may be determined appropriately depending on the shape of the connection terminals of the electronic component EP2, the shape of the electronic component EP2, and the like.

[0062] <Transition Portion 118> The first side surface 110a has a transition portion 118 (Figs. 1(a), 2(a), and 2(c)). The transition portion 118 extends between the first groove portion 112a and the flat portion 116. The transition portion 118 is continuous with the first groove portion 112a and the flat portion 116. The transition portion 118 has a shape in which two approximately triangular transition portions 118a and 118b are arranged in parallel (Figs. 1(a) and 2(a)). One triangular transition portion 118a corresponds to one of the two inclined surfaces 114 of the first groove portion 112a, and the other triangular transition portion 118b corresponds to the other of the two inclined surfaces 114 of the first groove portion 112a. The base portions of the two triangular transition portions 118a and 118b correspond to the valley bottom 113. The vertices of the triangular transitions 118 a and 118 b correspond to the apex 115 .

[0063] The first side surface 110a has two transition portions 118 sandwiching a flat portion 116 ( FIGS. 2( a ) and 2 ( c )). One transition portion 118 is located on the first end portion 102 side, and the other transition portion 118 is located on the second end portion 104 side. The inclined surface 114a of the first groove portion 112a continues to the flat portion 116 via the transition portion 118. The longitudinal extension line of the valley bottom 113a of the first groove portion 112a extends on the plane of the flat portion 116. The valley bottom 113a of the first groove portion 112a continues directly to the flat portion 116 without the transition portion 118. The step between the first groove portion 112a and the flat portion 116 can be reduced, and the first groove portion 112a can be led to the flat portion 116 via the transition portion 118.

[0064] The angle θ ( FIG. 2( c) ) formed between the flat portion 116 and the transition portion 118 is an obtuse angle. By making the angle θ an obtuse angle, the first conductor 132 a (described below) formed in the transition portion 118 and the second connection terminal portion 136 formed in the flat portion 116 can be formed to be accurately continuous even at the boundary between the transition portion 118 and the flat portion 116. The first conductor 132 a and the second connection terminal portion 136 can be formed to be electrically connected at the boundary between the transition portion 118 and the flat portion 116, so that a stable circuit can be formed in the elongated structure 10.

[0065] <Flat portions 122> The pillar 100 has flat portions 122 (see FIGS. 1 and 2). The flat portions 122 are used to hold the pillar 100 during the processing of the pillar 100. The size, shape, and number of the flat portions 122 may be determined appropriately depending on the processing step of the pillar 100. The presence or absence of flat portions 122 may be determined depending on the processing step of the pillar 100. Each of the side surfaces 110c and 110d has three flat portions 122. The flat portions 122 face each other across the central axis O.

[0066] <<End Face 120>> The columnar body 100 has an end face 120 (see FIGS. 1, 2, and 3). The end face 120 is a flat surface extending in a direction perpendicular to the longitudinal direction (central axis O) at the tip end on the first end portion 102 side. The end face 120 has a substantially circular outline except for the first groove portion 112a and the second groove portion 112b (see FIG. 3). On the end face 120, the valley bottom 113a of the first groove portion 112a and the valley bottom 113b of the second groove portion 112b face each other across the central axis O. Two first connection terminal portions 134a and 134b are formed along the end face 120 at a distance from each other. Connection terminals (not shown) of the electronic component EP1 are electrically connected to the first connection terminal portions 134a and 134b. The electronic component EP1 is supplied with power by the first connection terminals 134a and 134b. When the elongated structure 10 is in use, the end surface 120 functions as a leading end surface facing an object (not shown) on which the electronic component EP1 functions.

[0067] <<Conductor 130>> The elongated structure 10 has a conductor 130. The conductor 130 is formed on the surface of the columnar body 100. The conductor 130 has a first conductor 132a, a second conductor 132b, a first connection terminal 134, and a second connection terminal 136 (see FIGS. 1, 2, and 3).

[0068] <First conductor 132a> The first conductor 132a is a conductor formed in the first groove 112a. The first conductor 132a is a conductor having a small thickness formed along the surface of the first groove 112a. The first conductor 132a is formed continuously in both the first groove 112a in the region from the first end 102 to the flat portion 116 (the first conductor 132a on the first end 102 side) and the first groove 112a in the region from the flat portion 116 to the second end 104 (the first conductor 132a on the second end 104 side).

[0069] <Second conductor 132b> The second conductor 132b is a conductor formed in the second groove 112b. The second conductor 132b is a thin conductor formed along the surface of the second groove 112b. The second conductor 132b is formed continuously from the first end 102 to the second end 104.

[0070] The first conductor 132a and the second conductor 132b only need to be formed extending in the longitudinal direction from the first end 102 to at least a position between the first end 102 and the second end 104. The first conductor 132a and the second conductor 132b do not need to be formed over the entire length from the first end 102 to the second end 104. The lengths of the first conductor 132a and the second conductor 132b may be adjusted depending on the contact structure with a connection terminal (not shown) of the support member or the like.

[0071] <First Connection Terminal 134> The first connection terminal 134 is a conductor formed along the end surface 120 (see FIG. 3). The first connection terminal 134 has two first connection terminals 134a and 134b. The two first connection terminals 134a and 134b are formed on the end surface 120. The first connection terminal 134a is formed to be electrically connected to the first conductor 132a. The first connection terminal 134b is formed to be electrically connected to the second conductor 132b. Connection terminals (not shown) of the electronic component EP1 are electrically connected to both the first connection terminals 134a and 134b. The electrical connection between the first connection terminals 134a and 134b and the electronic component EP1 allows power to be supplied to the electronic component EP1 and the like.

[0072] The two first connection terminal portions 134a and 134b have a bulged shape (see FIG. 3) so that at least a portion of the outline thereof approaches the arc-shaped outline of the end face 120. This allows the areas of the first connection terminal portions 134a and 134b to be increased, thereby ensuring an accurate connection state with the connection terminals of the electronic component EP1.

[0073] <Second Connection Terminal Portion 136> The second connection terminal portion 136 is a conductor formed along the flat portion 116 (see FIGS. 1 and 2). The second connection terminal portion 136 has two second connection terminal portions 136a and 136b. The second connection terminal portions 136a and 136b are terminals for electrically connecting the electronic component EP2 on the flat portion 116. The second connection terminal portions 136a and 136b are formed on the flat portion 116 and spaced apart from each other.

[0074] The first side surface 110a has two second connection terminals 136a and 136b. The second connection terminals 136a and 136b are formed spaced apart from each other along the longitudinal direction of the first side surface 110a. The second connection terminal 136a is electrically connected to the first conductor 132a on the first end portion 102 side. The second connection terminal 136b is electrically connected to the first conductor 132a on the second end portion 104 side. Connection terminals (not shown) of the electronic component EP2 are electrically connected to both the second connection terminals 136a and 136b. The electrical connection between the second connection terminals 136a and 136b and the electronic component EP2 allows power to be supplied to the electronic component EP1, etc., via the electronic component EP2.

[0075] The lengths of the second connection terminals 136a and 136b along the longitudinal direction may be determined appropriately depending on the size of the electronic component EP2, etc. Note that by previously making the lengths of the flat portion 116 along the longitudinal direction and the second connection terminals 136a and 136b along the longitudinal direction longer, they can be made to correspond to various electronic components EP2. Different types of electronic components EP2 can be attached to the second connection terminals 136a and 136b without changing the design of the columnar body 100.

[0076] <<Electronic Component EP1>> The electronic component EP1 is primarily an electronic component such as an LED (light-emitting diode) or a sensor. The electronic component EP1 is not limited to these, and may also be a component that can emit waves such as light or sound. The electronic component EP1 may be a component that acts on an object when the elongated structure 10 is directed toward or brought close to the object, or a component that detects the state of the object.

[0077] <<Electronic Component EP2>> The electronic component EP2 is an auxiliary component for operating the electronic component EP1. The electronic component EP2 is an electronic component such as a resistor or capacitor that supports the main electronic component EP1. Note that when there is no need to distinguish between the electronic components EP1 and EP2 or when they cannot be distinguished, they are simply referred to as the electronic component EP. Furthermore, the electronic component EP2 may be the main electronic component together with the electronic component EP1.

[0078] <<<<Materials of the Columnar Body 100, etc.>>> The elongated structure 10 is manufactured by forming the columnar body 100 three-dimensionally, and then forming a pre-processed region and a conductor 130 on the surface of the columnar body 100 by laser irradiation processing and plating processing, and then forming a solder resist by resist coating processing and heat processing as necessary. Examples of materials for forming the columnar body 100 include inorganic materials such as ceramics and organic materials using resins, etc.

[0079] Suitable inorganic materials include silica, Neuburg silica, aluminum hydroxide, magnesium hydroxide, talc, clay, magnesium carbonate, calcium carbonate, natural mica, synthetic mica, barium sulfate, barium titanate, iron oxide, titanium oxide, aluminum oxide, glass powder, non-fibrous glass, glass fiber, carbon, carbon fiber, hydrotalcite, mineral wool, aluminum silicate, calcium silicate, zinc oxide, silicon nitride, sialon, silicon carbide aluminum nitride, etc. Suitable organic materials include thermosetting resins, photocurable resins, thermoplastic resins, etc.

[0080] The columnar body 100 is preferably made of a resin molded product, and a circuit is formed in the resin molded product. It is desirable to use a thermoplastic resin or a thermosetting resin, which is lightweight and easy to mold, for the columnar body 100. While known and commonly used resins can be used, in particular, since the columnar body 100 electrically connects the electronic component EP using solder or the like, engineering plastics with excellent heat resistance, such as fluororesin, polycarbonate polyacetal, polyamide, polyphenylene ether, amorphous polyarylate, polysulfone, polyethersulfone, polyphenylene sulfide, polyetheretherketone, polyimide, polyetherimide, and liquid crystal polymer, and thermosetting resins, such as phenolic resin, epoxy resin, melamine resin, urea resin, unsaturated polyester, and silicone resin, are preferred.

[0081] The method for forming the conductor 130 on the surface of the columnar body 100 can be any known method, and can be selected appropriately depending on the purpose. In particular, in the elongated structure 10, a non-conductive metal compound is dispersed in a molding resin, which is the material for the columnar body 100, and the columnar body 100 is molded using this molding resin. After that, laser light is irradiated according to the shape of the conductor 130 to generate metal nuclei from the non-conductive metal compound, forming a pre-processed region, and then plating is performed to form the conductor 130. According to this method, the metal nuclei generated by the laser light irradiation serve as a catalyst for plating, so that the conductor 130 can be selectively formed on the pre-processed region.

[0082] Examples of such non-conductive metal compounds include the non-conductive metal compounds disclosed in Japanese Patent No. 6265308 and the like, and may include, for example, one or more selected from the group consisting of spinel-type metal oxides, metal oxides selected from Groups 3 to 12 of the periodic table and having two or more transition metal elements adjacent to said groups (hereinafter simply referred to as metal oxides having transition metal elements), and tin-containing oxides.

[0083] Spinel type is a compound oxide, AB ２ O ４ This refers to the crystal structure found in compounds of this type (A and B are metal elements). Metal atoms that make up spinel-type metal oxides include, for example, copper and chromium.

[0084] The metal oxide containing the transition metal element can be expressed as a metal oxide containing a metal of Group n and a metal of Group n+1 of the periodic table. Examples of metals belonging to Group n of the periodic table include Group 3 (scandium, yttrium), Group 4 (titanium, zirconium, etc.), Group 5 (vanadium, niobium, etc.), Group 6 (chromium, molybdenum, etc.), Group 7 (manganese, etc.), Group 8 (iron, ruthenium, etc.), Group 9 (cobalt, rhodium, iridium, etc.), Group 10 (nickel, palladium, platinum), Group 11 (copper, silver, gold, etc.), Group 12 (zinc, cadmium, etc.), and Group 13 (aluminum, gallium, indium, etc.). Examples of metals in Group n+1 of the periodic table include Group 4 (titanium, zirconium, etc.), Group 5 (vanadium, niobium, etc.), Group 6 (chromium, molybdenum, etc.), Group 7 (manganese, etc.), Group 8 (iron, ruthenium, etc.), Group 9 (cobalt, rhodium, iridium, etc.), Group 10 (nickel, palladium, platinum), Group 11 (copper, silver, gold, etc.), Group 12 (zinc, cadmium, etc.), and Group 13 (aluminum, gallium, indium, etc.).

[0085] The tin-containing oxide is a metal oxide containing at least tin. The metal element constituting the tin-containing oxide may be antimony in addition to tin.

[0086] Among these, spinel-type metal oxides can be preferably used, and copper chromite (CuCr ２ O ４ ) can be suitably used.

[0087] The amount of the non-conductive metal compound to be blended is, for example, 2 to 25% by mass, and preferably 4 to 20% by mass, based on the total solid content of the molding resin.

[0088] A conductor 130 is formed integrally with the column 100 on the surface of the column 100. By forming the conductor 130 integrally with the surface of the column 100, the column 100 functions as a three-dimensionally molded substrate.

[0089] The columnar body 100 is produced by molding, cutting, or 3D printing using a 3D printer.

[0090] <<<<Manufacturing and Processing Processes of the Elongated Structure 10 >>> The manufacturing process of the elongated structure 10 mainly comprises a laser irradiation process and a plating process. The processing process of the elongated structure mainly comprises a resist coating process and a process for attaching electronic components.

[0091] <<Laser Irradiation Treatment>> Laser irradiation is a treatment in which a laser irradiation device is used to irradiate the surface of the columnar body 100 with laser light to form a pre-treated region. The pre-treated region is a region in which metal nuclei are generated in a region in which the conductor 130 will be formed. The conductor 130 is formed in the region in which the metal nuclei are generated by performing a plating treatment, which will be described later.

[0092] During the laser irradiation process, the pillar 100 is placed at a fixed position on a jig (not shown) used for the laser irradiation. This allows the pillar 100 to be held at a fixed position relative to the jig. In this state, data indicating the position, shape, size, etc. of the conductor 130 is read from the storage device of the laser irradiation device, and a laser is irradiated toward the surface of the pillar 100 at the position indicated by the data.

[0093] There are no particular limitations on the laser light, as long as it can emit a metal when irradiated onto a non-conductive metal complex. The wavelength of the laser light can be, for example, 248 nm, 308 nm, 355 nm, 532 nm, 1064 nm, or 10600 nm.

[0094] <<Plating Process>> Plating process is a process of generating a conductive portion in a pre-processed region to form the conductor 130. Specifically, plating processes include electroless plating (Cu, Ni, Au), etc. In plating process, the metal nuclei generated in the laser irradiation process described above act as catalysts to generate plating. Therefore, since plating is selectively generated on the pre-processed region, it is possible to form a conductor 130 having substantially the same shape as the pre-processed region.

[0095] During the plating process, the columnar body 100 is hung on a jig (not shown) used for the plating process. In this way, the columnar body 100 can be suspended from the jig. In this state, the columnar body 100 is immersed in a plating tank for a predetermined time. By the plating process, a conductor 130 is formed in the pre-processed region of the columnar body 100, and the elongated structure 10 can be manufactured.

[0096] <<Resist Coating Process and Heat Treatment>> The resist coating process is a step of forming a protective body, preferably a protective film, that covers and protects the formed conductor 130. Specifically, the resist coating process involves applying the resist to the entire surface using a spray.

[0097] During the resist coating process, the columnar body 100 is hung on a jig (not shown) used for the resist coating process. In this way, the columnar body 100 can be suspended from the jig. In this state, resist is coated on the entire surface of the columnar body 100. The coated resist is then heated to dry and harden, forming resist on the entire surface of the part supply body. The method of heat treatment is not particularly limited, but examples include an inert gas oven, a hot plate, a blower dryer, a vacuum oven, and a heat press. Heat treatment conditions include, for example, drying at 50 to 100°C for 10 to 60 minutes, and hardening at 120 to 180°C for 15 to 60 minutes.

[0098] Furthermore, the pillar 100 is provided at a fixed position on a jig (not shown) used for the resist stripping process. This allows the pillar 100 to be held at a fixed position relative to the jig. In this state, data indicating the position, shape, size, etc. of the conductor 130 is read from the storage device of the laser irradiation device, and a laser is irradiated toward the surface of the pillar 100 at the position of the electrode portion where the resist is to be stripped. This allows the resist to be removed from the electrode portion for soldering, etc.

[0099] In the above example, the process of applying resist to the entire surface of the columnar body 100 has been described, but the resist may be applied only to the region where the conductor 130 is formed. In this way, the amount of resist consumed can be reduced.

[0100] <<Attachment Process of Electronic Component EP>> An electronic component EP can be attached to the conductor 130 in the resist peeled region. The electronic component EP can be attached to the conductor 130 by forming an electrical connection between the electronic component EP and the conductor 130 by soldering or the like. In this way, the electronic component EP can be attached to the columnar body 100 while the columnar body 100 is held.

[0101] In the above example, the process of attaching the electronic component EP to the columnar body 100 while the columnar body 100 is held has been described, but the columnar body 100 may be removed and then the electronic component EP may be attached to the columnar body 100. Depending on the size, shape, and attachment position of the columnar body 100, as well as the size and shape of the electronic component EP, it may be determined as appropriate whether to attach the electronic component EP to the columnar body 100 while the columnar body 100 is held, or to attach the electronic component EP to the columnar body 100 after removing the columnar body 100.

[0102] The columnar body 100 can maintain its original shape even when stress is generated during the manufacturing process, etc., and therefore manufacturing processes requiring high positional accuracy, such as the above-mentioned laser irradiation process, can be smoothly performed. This allows the conductor to be formed in the exact position of the columnar body 100, and it is possible to obtain a long structure 10 that maintains its original shape. Furthermore, the long structure 10 can have the columnar body 100 in which the conductor is formed in the exact position and that maintains its original shape. This allows processing processes requiring high positional accuracy, such as resist stripping and electronic component mounting, to be smoothly performed.

[0103] <<<<<Second embodiment>>>> Figure 4 is a perspective view (a) seen from the front and a perspective view (b) seen from the back showing the structure of the elongated structure 20 according to the second embodiment. Figure 5 is a front view (a) and a back view (b) showing the structure of the elongated structure 20 according to the second embodiment. Figure 6 is a plan view showing the structure of the elongated structure 20 according to the second embodiment. In Figures 4 to 6, the same components as those of the elongated structure 10 according to the first embodiment are denoted by the same reference numerals.

[0104] <<Configuration common to the elongated structure 10 according to the first embodiment>> <First groove 112a and second groove 112b, and first conductor 132a and second conductor 132b> In the elongated structure 20 according to the second embodiment, the first groove 112a and the second groove 112b extend only from the first end 102 to a transition portion 218 (described later). The first conductor 132a is formed in the first groove 112a, and the second conductor 132b is formed in the second groove 112b. The first groove 112a and the second groove 112b and the first conductor 132a and the second conductor 132b have the same configuration and function as those of the elongated structure 10 according to the first embodiment.

[0105] <End surface 120> The elongated structure 20 according to the second embodiment has an end surface 120. The end surface 120 has a first connection terminal portion 134a and a first connection terminal portion 134b. An electronic component EP1 can be provided on the end surface 120. Connection terminals (not shown) of the electronic component EP1 are electrically connected to the first connection terminal portion 134a and the first connection terminal portion 134b. The end surface 120 also has a configuration similar to that of the elongated structure 10 according to the first embodiment and functions similarly.

[0106] <<<Configurations Different from the Elongated Structure 10 According to the First Embodiment>>> Below, configurations different from the elongated structure 10 according to the first embodiment will be described.

[0107] <<Columnar body 200>> The elongated structure 20 according to the second embodiment (see FIGS. 4, 5, and 6) mainly includes a columnar body 200 and a conductor 130. The conductor 130 includes a first conductor 132a and a second conductor 132b. The columnar body 200 has a columnar shape. The columnar body 200 has an elongated shape and includes two longitudinal ends, a first end 102 and a second end 204.

[0108] <Flat Portion 216> The columnar body 200 has a flat portion 216. The flat portion 216 has a first flat portion 216a, a second flat portion 216b, a third flat portion 216c, and a fourth flat portion 216d (see FIGS. 4 and 5). The first flat portion 216a, the second flat portion 216b, the third flat portion 216c, and the fourth flat portion 216d have a flat shape and do not have a groove portion such as the first groove portion 112a and the second groove portion 112b. The first flat portion 216a, the second flat portion 216b, the third flat portion 216c, and the fourth flat portion 216d extend from the transition portion 218 to the second end 204. The columnar body 200 has a generally rectangular columnar shape in the region from the transition portion 218 to the second end portion 204, due to the first flat portion 216a, second flat portion 216b, third flat portion 216c, and fourth flat portion 216d. An electronic component EP2 is provided on the first flat portion 216a (see FIGS. 4(a) and 4(b)). The second flat portion 216b has a conductor 138. The conductor 138 is electrically connected to the second conductor 132b formed in the second groove portion 112b and is formed along the longitudinal direction of the second flat portion 216b.

[0109] Various components and members such as electronic components EP2 may be provided not only on the first flat portion 216 a but also on the second flat portion 216 b. Depending on the number and types of electronic components EP2, they may be provided on the first flat portion 216 a or the second flat portion 216 b as appropriate.

[0110] <Second End 204> Similar to the second end 104 of the first embodiment, the second end 204 is primarily used to hold the elongated structure 20 on a holding member (not shown) or the like. Unlike the columnar body 100 of the first embodiment, the second end 204 has a substantially rectangular prism shape composed of a first flat portion 216a, a second flat portion 216b, a third flat portion 216c, and a fourth flat portion 216d. Therefore, the substantially rectangular prism shape of the second end 204 allows the elongated structure 20 to be stably held on a holding member (not shown) or the like, thereby stabilizing electrical contact with the holding member. The second connection terminal 136b formed on the first flat portion 216a and the conductor 138 formed on the second flat portion 216b can be electrically connected to an electrode (not shown) of the holding member. Power can be supplied to the electronic component EP1 and the like from a power source PS (not shown) or the like through the electrical connection between the second connection terminal portion 136b and the conductor 138. Note that the electrical connection between the second connection terminal portion 136b and the conductor 138 may be used not only for power supply but also for inputting and outputting control signals and the like.

[0111] <Side Surfaces 210> The pillar 200 has side surfaces 210. The pillar 200 has a first side surface 210a, a second side surface 210b, a third side surface 210c, and a fourth side surface 210d. Each of the first side surface 210a, the second side surface 210b, the third side surface 210c, and the fourth side surface 210d has an elongated shape. When it is not necessary to distinguish between the four side surfaces 210a to 210d or when they cannot be distinguished, they will be simply referred to as side surfaces 210.

[0112] <Transition Portion 218> The side surface 210 has a transition portion 218. The transition portion 218 has a first transition portion 218a, a second transition portion 218b, a third transition portion 218c, and a fourth transition portion 218d. The first side surface 210a has the first transition portion 218a, the second side surface 210b has the second transition portion 218b, the third side surface 210c has the third transition portion 218c, and the fourth side surface 210d has the fourth transition portion 218d. The first transition portion 218a of the first side surface 210a has the same configuration as the transition portion 118 of the first embodiment and functions in the same way. The second transition portion 218b of the second side surface 210b also has the same configuration as the transition portion 218a and functions in the same way. The provision of the first transition portion 218a allows the first conductor 132a and the second connection terminal portion 136a to be connected at the boundary between the first transition portion 218a and the first flat portion 216a, thereby enabling a stable electrical connection to be formed. The provision of the second transition portion 218b allows the second conductor 132b and the conductor 138 to be continuous at the boundary between the second transition portion 218b and the second flat portion 216b, thereby enabling a stable electrical connection to be formed.

[0113] The third transition portion 218c and the fourth transition portion 218d have the same configuration and function as the first transition portion 218a and the second transition portion 218b, except that they do not have a triangular transition portion but have a semicircular transition portion instead. In particular, when a conductor is provided on the third side surface 110c, the provision of the third transition portion 218c allows a conductor portion to be formed so as to be continuous at the boundary between the third transition portion 218c and the third flat portion 216c. Similarly, when a conductor is provided on the fourth side surface 110d, the provision of the fourth transition portion 218d allows a conductor portion to be formed so as to be continuous at the boundary between the fourth transition portion 218d and the fourth flat portion 216d.

[0114] <First Side 210a> The first side 210a has a first groove 112a, a first flat portion 216a, and a first transition portion 218a. The first groove 112a extends from the first end 102 to the first transition portion 218a. The first groove 112a has a structure and functions similar to that of the pillar 100 according to the first embodiment. The first transition portion 218a extends between the first groove 112a and the first flat portion 216a. A first conductor 132a is formed in the first groove 112a and the first transition portion 218a. Second connection terminals 136a and 136b are formed on the first flat portion 216a. Unlike the first embodiment, the second connection terminal 136b extends to the second end 204.

[0115] <Second Side Surface 210b> The second side surface 210b has a second groove portion 112b, a second flat portion 216b, and a second transition portion 218b. The second groove portion 112b extends from the first end portion 102 to the second transition portion 218b. The second groove portion 112b has a structure and functions similarly to the columnar body 100 according to the first embodiment. The second transition portion 218b extends between the second groove portion 112b and the second flat portion 216b. A second conductor 132b is formed in the second groove portion 112b and the second transition portion 218b, and a conductor 138 is formed on the second flat portion 216b. The second conductor 132b and the conductor 138 are continuously formed from the first end portion 102 to the second end portion 204.

[0116] <Third Side 210c> The third side 210c has a third side 110c, a third flat portion 216c, and a third transition portion 218c. The third side 110c extends from the first end 102 to the third transition portion 218c. The third side 110c has a structure and functions similar to that of the pillar 100 according to the first embodiment. The third transition portion 218c extends between the third side 110c and the third flat portion 216c.

[0117] <Fourth Side 210d> The fourth side 210d has a fourth side 110d, a fourth flat portion 216d, and a fourth transition portion 218d. The fourth side 110d extends from the first end 102 to the fourth transition portion 218d. The fourth side 110d has a structure and functions similar to that of the column 100 according to the first embodiment. The fourth transition portion 218d extends between the fourth side 110d and the third flat portion 216c.

[0118] <First Side Surface 210a and Second Side Surface 210b> The first side surface 210a and the second side surface 210b extend opposite to each other with the central axis O in between.

[0119] <Third Side Surface 210c and Fourth Side Surface 210d> The third side surface 210c and the fourth side surface 210d extend opposite to each other across the central axis O. The third side surface 210c and the fourth side surface 210d are not provided with conductors such as the first conductor 132a, the second conductor 132b, the second connection terminal portions 136a and 136b, and the conductor 138. Note that conductors and grooves may also be provided on the third side surface 210c and the fourth side surface 210d.

[0120] <Groove Pair Composed of First Groove 112a and Second Groove 112b> The pillar 200 has a first groove 112a and a second groove 112b in the region from the first end 102 to the transition portion 218. The first groove 112a and the second groove 112b face each other to form a groove pair in the region from the first end 102 to the transition portion 218. In this way, the first groove 112a and the second groove 112b do not need to face each other over the entire length from the first end 102 to the second end 204, but only need to face each other over at least a portion to form a groove pair.

[0121] <<<<<Third embodiment>>>> Figure 7 is a perspective view (a) seen from the front and a perspective view (b) seen from the back showing the structure of a elongated structure 30 according to a third embodiment. Figure 8 is a front view (a) and a back view (b) showing the structure of a elongated structure 30 according to the third embodiment. Figure 9 is a plan view showing the structure of a elongated structure 30 according to the third embodiment. In Figures 7 to 9, the same reference numerals are used to denote the same components as those of the elongated structure 10 according to the first embodiment and the elongated structure 20 according to the second embodiment.

[0122] <<Main Features of the Elongated Structure 30 According to the Third Embodiment>> The columnar body 100 according to the first embodiment and the columnar body 200 according to the second embodiment have only one pair (one set) of grooves, i.e., a first groove 112a and a second groove 112b facing each other. The end surface 120 of the columnar body 100 or 200 has a first connection terminal 134a and a second connection terminal 134b corresponding to each of the pair (one set) of grooves. The connection terminals of one electronic component EP1 are electrically connected to the first connection terminal 134a and the second connection terminal 134b. One electronic component EP1 is provided on the end surface 120 of the columnar body 100 or 200. In contrast, the elongated structure 30 according to the third embodiment has two or more pairs (two or more sets) of grooves, such as a first groove 112a(1) and a second groove 112b(1), and a first groove 112a(2) and a second groove 112b(2), facing each other. Each pair (each set) of grooves has a corresponding first connection terminal 134a(1) and a first connection terminal 134b(1). A connection terminal of one electronic component EP1(1) is electrically connected to each of the first connection terminal 134a(1) and the first connection terminal 134b(1). A plurality of electronic components EP1 are provided on an end surface 320 of the columnar body 300.

[0123] <<Elongated structure 30 according to third embodiment>> The elongated structure 30 according to the third embodiment mainly includes a pillar 300 and a conductor 132. The pillar 300 has a first side surface 310a and a second side surface 310b facing each other.

[0124] <First Grooves 112a(1) to 112a(5) and Second Grooves 112b(1) to 112b(5)> The pillar 300 according to the third embodiment has five pairs of grooves. The pillar 300 has five pairs of first grooves 112a(1) to 112a(5) and five pairs of second grooves 112b(1) to 112b(5) (see FIGS. 7, 8, and 9). The first side surface 310a has the first grooves 112a(1) to 112a(5). The second side surface 310b has the second grooves 112b(1) to 112b(5). When there is no need to distinguish between the first groove portions 112a(1) to 112a(5) and the second groove portions 112b(1) to 112b(5) or when they cannot be distinguished, they will simply be referred to as the first groove portion 112a, the second groove portion 112b, the groove portion 112, etc.

[0125] The first groove 112a(1) and the second groove 112b(1) face each other to form a first pair. The first groove 112a(2) and the second groove 112b(2) face each other to form a second pair. The first groove 112a(3) and the second groove 112b(3) face each other to form a third pair. The first groove 112a(4) and the second groove 112b(4) face each other to form a fourth pair. The first groove 112a(5) and the second groove 112b(5) face each other to form a fifth pair. The first to fifth pairs of grooves are arranged in parallel along the lateral direction. Each of the first grooves 112a(1) to 112a(5) and each of the second grooves 112b(1) to 112b(5) have the same configuration as the elongated structure 10 according to the first embodiment and function in the same manner.

[0126] <Second end 304 and flat portion 316> The pillar 300 has an elongated shape and has two longitudinal ends, a first end 302 and a second end 304. The pillar 300 has a flat portion 316 at the second end 304. The flat portion 316 has five first flat portions 316a(1) to 316a(5) and five second flat portions 316b(1) to 316b(5).

[0127] When there is no need to distinguish between the first flat portions 316a(1) to 316a(5) and the second flat portions 316b(1) to 316b(5) or when they cannot be distinguished, they will simply be referred to as the first flat portion 316a, the second flat portion 316b, the flat portion 316, etc.

[0128] The first grooves 112a(1) to 112a(5) extend parallel to one another from the first end 302 until they reach the first flat portions 316a(1) to 316a(5). The second grooves 112b(1) to 112b(5) extend parallel to one another from the first end 302 until they reach the second flat portions 316b(1) to 316b(5). A first conductor 132a(1) is formed in the first groove 112a(1). A conductive portion 138a(1) is formed in the first flat portion 316a(1). A first conductor 132a(2) is formed in the first groove 112a(2). A conductor 138a(2) is formed in the first flat portion 316a(2). A first conductor 132a(3) is formed in the first groove portion 112a(3). A conductor 138a(3) is formed in the first flat portion 316a(3). A first conductor 132a(4) is formed in the first groove portion 112a(4). A conductor 138a(4) is formed in the first flat portion 316a(4). A first conductor 132a(5) is formed in the first groove portion 112a(5). A conductor 138a(5) is formed in the first flat portion 316a(5). The second conductors 132b(1) to 132b(5) and conductors 138b(1) to 138b(5) are formed in the same manner.

[0129] When there is no need to distinguish between the first conductors 132a(1) to 132a(5) and the second conductors 132b(1) to 132b(5) or when they cannot be distinguished, they will be simply referred to as the first conductor 132a, the second conductor 132b, the conductor 132, etc. Similarly, when there is no need to distinguish between the conductors 138a(1) to 138a(5) and the conductors 138b(1) to 138b(5) or when they cannot be distinguished, they will be simply referred to as the conductors 138a, 138b, 138, etc.

[0130] Each of the first conductors 132a(1) to 132a(5) and each of the second conductors 132b(1) to 132b(5) has the same configuration as the elongated structure 10 according to the first embodiment and functions in the same manner.

[0131] The second end 304 has a generally plate-like shape. The generally plate-like second end 304 allows the elongated structure 30 to be stably held by a holding member (not shown) or the like, and stabilizes electrical contact with the holding member. The conductors 138a(1) to 138a(5) formed on the first flat portions 316a(1) to 316a(5) and the conductors 138b(1) to 138b(5) formed on the second flat portions 316b(1) to 316b(5) can be electrically connected to electrodes (not shown) of the holding member.

[0132] <Transition portion 318> A first transition portion 318a(1) extends between the first groove portion 112a(1) and the first flat portion 316a(1). A first transition portion 318a(2) extends between the first groove portion 112a(2) and the first flat portion 316a(2). A first transition portion 318a(3) extends between the first groove portion 112a(3) and the first flat portion 316a(3). A first transition portion 318a(4) extends between the first groove portion 112a(4) and the first flat portion 316a(4). A first transition portion 318a(5) extends between the first groove portion 112a(5) and the first flat portion 316a(5). Second transitions 318b(1)-318b(5) extend in a similar manner.

[0133] When it is not necessary to distinguish between the first transition portions 318a(1) to 318a(5) and the second transition portions 318b(1) to 318b(5) or when it is not possible to distinguish between them, they will simply be referred to as the first transition portion 318a, the second transition portion 318b, the transition portion 318, etc.

[0134] The first transition portions 318a(1) to 318a(5) and the second transition portions 318b(1) to 318b(5) have the same configuration and function as the transition portion 118 of the first embodiment. By providing the first transition portion 318a, the first conductor 132a and the conductor 138a are connected at the boundary between the first transition portion 318a and the first flat portion 316a, thereby enabling a stable electrical connection. By providing the second transition portion 318b, the second conductor 132b and the conductor 138b are connected at the boundary between the second transition portion 318b and the second flat portion 316b, thereby enabling a stable electrical connection.

[0135] <End surface 320, first connection terminals 134a, 134b> The columnar body 300 has an end surface 320 on the first end 302 side (see FIGS. 7, 8, and 9). The end surface 320 has a substantially oval shape (see FIG. 9). The first connection terminals 134a(1) to 134a(5) and the first connection terminals 134b(1) to 134b(5) are formed on the end surface 320. Each of the first connection terminals 134a(1) to 134a(5) and each of the first connection terminals 134b(1) to 134b(5) has the same configuration as the elongated structure 10 according to the first embodiment and functions in the same manner.

[0136] The first connection terminal portion 134a(1) and the first connection terminal portion 134b(1) face each other, the first connection terminal portion 134a(2) and the first connection terminal portion 134b(2) face each other, the first connection terminal portion 134a(3) and the first connection terminal portion 134b(3) face each other, the first connection terminal portion 134a(4) and the first connection terminal portion 134b(4) face each other, and the first connection terminal portion 134a(5) and the first connection terminal portion 134b(5) face each other, and are formed on the end surface 320.

[0137] The first connection terminal 134a(1) is formed and electrically connected to the first conductor 132a(1). The first connection terminal 134a(2) is formed and electrically connected to the first conductor 132a(2). The first connection terminal 134a(3) is formed and electrically connected to the first conductor 132a(3). The first connection terminal 134a(4) is formed and electrically connected to the first conductor 132a(4). The first connection terminal 134a(5) is formed and electrically connected to the first conductor 132a(5). Similarly, the first connection terminals 134b(1) to 134b(5) are electrically connected to the second conductors 132b(1) to 132b(5).

[0138] <Connection of the First Electronic Component EP1(1) to the Fifth Electronic Component EP1(5)> The connection terminals (not shown) of the first electronic component EP1(1) are electrically connected to the first connection terminal portion 134a(1) and the first connection terminal portion 134b(1) at the end surface 320. The connection terminals (not shown) of the second electronic component EP1(2) are electrically connected to the first connection terminal portion 134a(2) and the first connection terminal portion 134b(2) at the end surface 320. Similarly, the third electronic component EP1(3) to the fifth electronic component EP1(5) can be electrically connected to the first connection terminal portions 134a(3) to 134a(5) and the first connection terminal portions 134b(3) to 134b(5), respectively, at the end surface 320. In this manner, multiple electronic components EP1 can be electrically connected at the end surface 320.

[0139] It is not necessary to electrically connect electronic components EP1 to all pairs of first connection terminals 134a and 134b, but it is sufficient to connect a desired number of electronic components EP1. Furthermore, it is not necessary to use connection terminals 134 in pairs, and three or more of the multiple connection terminals 134, such as a positive electrode, a ground electrode, and a negative electrode, may be used for one electronic component.

[0140] The number of first grooves 112a and second grooves 112b in the columnar body 300 is not limited to five and may be any other number. The number of first grooves 112a and second grooves 112b may be determined appropriately depending on the number of electronic components EP1 to be attached, etc.

[0141] <<<<<Fourth embodiment>>>> Figure 10 is a perspective view (a) seen from the front and a perspective view (b) seen from the back showing the structure of a elongated structure 40 according to a fourth embodiment. Figure 11 is a front view showing the structure of the elongated structure 40 according to the fourth embodiment. Figure 12 is a plan view showing the structure of the elongated structure 40 according to the fourth embodiment. In Figures 10 to 12, the same reference numerals are used to denote the same components as those in the elongated structure 10 according to the first embodiment, the elongated structure 20 according to the second embodiment, and the elongated structure 30 according to the third embodiment.

[0142] <<Major Features of the Elongated Structure 40 According to the Fourth Embodiment>> In the elongated structure 30 according to the third embodiment, the first electronic component EP1(1) to the fifth electronic component EP1(5), each having two connection terminals, are separately electrically connected to each of the five pairs of connection terminals 134, each consisting of the first connection terminal portions 134a(1) to 134a(5) and the first connection terminal portions 134b(1) to 134b(5).

[0143] In contrast, the elongated structure 40 according to the fourth embodiment electrically connects an electronic component EP1 having three or more connection terminals at an end surface 420 (described later). For example, a DIP (Dual In-line Package) type integrated circuit having three or more connection terminals can be electrically connected at the end surface 420.

[0144] <<Elongated structure 40 according to the fourth embodiment>> The elongated structure 40 according to the fourth embodiment mainly includes a pillar 400 and a conductor 132. The pillar 400 has a first side surface 410a and a second side surface 410b facing each other.

[0145] <First Grooves 112a(1) to 112a(3) and Second Grooves 112b(1) to 112b(3)> The pillar 400 according to the fourth embodiment has three pairs of grooves. The pillar 400 has first grooves 112a(1) to 112a(3) and second grooves 112b(1) to 112b(3) (see FIGS. 10 and 11). The first side surface 410a has the first grooves 112a(1) to 112a(3). The second side surface 410b has the second grooves 112b(1) to 112b(3).

[0146] When there is no need to distinguish between the first groove portions 112a(1) to 112a(3) and the second groove portions 112b(1) to 112b(3) or when they cannot be distinguished, they will simply be referred to as the first groove portion 112a, the second groove portion 112b, the groove portion 112, etc.

[0147] The first groove 112a(1) and the second groove 112b(1) face each other to form a first pair. The first groove 112a(2) and the second groove 112b(2) face each other to form a second pair. The first groove 112a(3) and the second groove 112b(3) face each other to form a third pair. The first to third pairs of grooves 112 are arranged in parallel along the lateral direction.

[0148] Each of the first grooves 112a(1) to 112a(3) and each of the second grooves 112b(1) to 112b(3) have the same configuration as the elongated structure 10 according to the first embodiment and function in the same manner.

[0149] <Second end 404 and flat portion 416> The pillar 400 has an elongated shape and has two longitudinal ends, a first end 402 and a second end 404. The pillar 400 has a flat portion 416 at the second end 404. The flat portion 416 has first flat portions 416a(1) to 416a(3) and second flat portions 416b(1) to 416b(3).

[0150] When there is no need to distinguish between the first flat portions 416a(1) to 416a(3) and the second flat portions 416b(1) to 416b(3) or when they cannot be distinguished, they will simply be referred to as the first flat portion 416a, the second flat portion 416b, the flat portion 416, etc.

[0151] The first grooves 112a(1)-112a(3) extend parallel to one another from the first end 402 until they reach the first flats 416a(1)-416a(3). The second grooves 112b(1)-112b(3) extend parallel to one another from the first end 402 until they reach the second flats 416b(1)-416b(3).

[0152] A first conductor 132a(1) is formed in the first groove portion 112a(1). A conductor 138a(1) is formed in the first flat portion 416a(1). A first conductor 132a(2) is formed in the first groove portion 112a(2). A conductor 138a(2) is formed in the first flat portion 416a(2). A first conductor 132a(3) is formed in the first groove portion 112a(3). A conductor 138a(3) is formed in the first flat portion 416a(3). The second conductors 132b(1) to 132b(3) and the conductors 138b(1) to 138b(3) are formed in the same manner.

[0153] Each of the first conductors 132a(1) to 132a(3) and each of the second conductors 132b(1) to 132b(3) have the same configuration as the elongated structure 10 according to the first embodiment and function in the same manner.

[0154] When there is no need to distinguish between the first conductors 132a(1) to 132a(3) and the second conductors 132b(1) to 132b(3) or when they cannot be distinguished, they will be simply referred to as the first conductor 132a, the second conductor 132b, the conductor 132, etc. Similarly, when there is no need to distinguish between the conductors 138a(1) to 138a(3) and the conductors 138b(1) to 138b(3) or when they cannot be distinguished, they will be simply referred to as the conductor 138a, the conductor 138b, the conductor 138, etc.

[0155] The second end 404 has a substantially rectangular prism shape. The substantially rectangular prism shape of the second end 404 allows the elongated structure 40 to be stably held by a holding member (not shown) or the like, and allows for stable electrical contact with the holding member. The conductors 138a(1) to 138a(3) formed on the first flat portions 416a(1) to 416a(3) and the conductors 138b(1) to 138b(3) formed on the second flat portions 416b(1) to 416b(3) can be electrically connected to electrodes (not shown) of the holding member.

[0156] <Transition portion 418> A first transition portion 418a(1) extends between the first groove portion 112a(1) and the first flat portion 416a(1). A first transition portion 418a(2) extends between the first groove portion 112a(2) and the first flat portion 416a(2). A first transition portion 418a(3) extends between the first groove portion 112a(3) and the first flat portion 416a(3). Second transition portions 418b(1)-418b(3) extend similarly.

[0157] When it is not necessary to distinguish between the first transition portions 418a(1) to 418a(3) and the second transition portions 418b(1) to 418b(3) or when it is not possible to distinguish between them, they will simply be referred to as the first transition portion 418a, the second transition portion 418b, the transition portion 418, etc.

[0158] The first transition portions 418a(1) to 418a(3) and the second transition portions 418b(1) to 418b(3) have the same configuration and function as the transition portion 118 of the first embodiment. By providing the first transition portion 418a, the first conductor 132a and the conductor 138a are connected at the boundary between the first transition portion 418a and the first flat portion 416a, thereby enabling a stable electrical connection. By providing the second transition portion 418b, the second conductor 132b and the conductor 138b are connected at the boundary between the second transition portion 418b and the second flat portion 416b, thereby enabling a stable electrical connection.

[0159] <End surface 420, first connection terminals 134a, 134b> The columnar body 400 has an end surface 420 on the first end 402 side (see FIGS. 10, 11, and 12). The end surface 420 has a substantially rectangular shape (see FIG. 12). The first connection terminals 134a(1) to 134a(3) and the first connection terminals 134b(1) to 134b(3) are formed on the end surface 420. Each of the first connection terminals 134a(1) to 134a(3) and each of the first connection terminals 134b(1) to 134b(3) has the same configuration as the elongated structure 10 according to the first embodiment and functions in the same manner.

[0160] The first connection terminal portion 134a(1) and the first connection terminal portion 134b(1) face each other, the first connection terminal portion 134a(2) and the first connection terminal portion 134b(2) face each other, and the first connection terminal portion 134a(3) and the first connection terminal portion 134b(3) face each other, and are formed on the end surface 420.

[0161] The first connection terminal 134a(1) is formed and electrically connected to the first conductor 132a(1). The first connection terminal 134a(2) is formed and electrically connected to the first conductor 132a(2). The first connection terminal 134a(3) is formed and electrically connected to the first conductor 132a(3). The first connection terminals 134b(1) to 134b(3) are similarly electrically connected to the second conductors 132b(1) to 132b(3).

[0162] <Connection of Electronic Component EP1> One electronic component EP1 is electrically connected to six connection terminal portions 134, namely, first connection terminal portions 134a(1) to 134a(3) and first connection terminal portions 134b(1) to 134b(3), at the end surface 420. In this example, the electronic component EP1 has six connection terminals (not shown).

[0163] In this way, electronic components EP1 having three or more connection terminals can be electrically connected. Various signals can be input to and output from the electronic component EP1 via each of the connection terminal portions 134. The elongated structure 40 according to the fourth embodiment can also be used for electronic components EP1 that require various control signals or generate various output signals.

[0164] Not only one electronic component EP1 but also multiple electronic components EP1 can be provided on the end surface 420. The arrangement and number of the grooves 112, the conductors 132, and the connection terminal portions 134 can be determined appropriately according to the desired electronic component EP1 and the arrangement and number of the connection terminals of the electronic component EP1.

[0165] <<<<<Fifth embodiment>>>> Figure 13 is a perspective view showing the structure of a elongated structure 50 according to a fifth embodiment. In Figure 13, the same reference numerals are used to designate the same components as those in the elongated structure 10 according to the first embodiment, the elongated structure 20 according to the second embodiment, the elongated structure 30 according to the third embodiment, and the elongated structure 40 according to the fourth embodiment.

[0166] <<Main Features of the Elongated Structure 50 According to the Fifth Embodiment>> The columnar body 400 of the elongated structure 40 according to the fourth embodiment has two longitudinal ends, a first end 402 and a second end 404. The columnar body 400 extends linearly from the first end 402 to the second end 404. The columnar body 400 has a substantially flat plate-like shape. Furthermore, the columnar body 400 has an end face 420. An electronic component EP1 such as a DIP-type integrated circuit having three or more connection terminals can be electrically connected to the end face 420. Alternatively, the elongated structure 50 may have a bent shape.

[0167] The elongated structure 50 according to the fifth embodiment mainly includes a pillar 500 and a conductor 132. The pillar 500 has a first side surface 510a and a second side surface 510b facing each other. The pillar 500 has a shape that is bent in a substantially L-shape. The pillar 500 has an elongated shape. The pillar 500 has a first end 502 and a second end 504 in the longitudinal direction. The pillar 500 has a portion that is bent in a substantially L-shape between the first end 502 and the second end 504.

[0168] <First Grooves 112a(1) to 112a(3) and Second Grooves 112b(1) to 112b(3)> The pillar 500 according to the fifth embodiment has three pairs of grooves that have the same configuration and function as the pillar 400 according to the fourth embodiment. It may also have grooves that have the same configuration and function as the grooves of the pillars 100 to 300 according to the first to third embodiments.

[0169] <End Face 520, First Connection Terminals 134a, 134b> The pillar 500 has an end face 520 on the side of the first end 502. The end face 520 has the same configuration and functions as the end face 420 of the pillar 400 according to the fourth embodiment. The pillar 500 may have an end face that has the same configuration and functions as the end faces of the pillars 100 to 300 according to the first to third embodiments.

[0170] Furthermore, first connection terminal portions 134a(1) to 134a(3) and first connection terminal portions 134b(1) to 134b(3) are formed on end surface 520, similar to the first connection terminal portions of columnar body 400 according to the fourth embodiment. Each of first connection terminal portions 134a(1) to 134a(3) and each of first connection terminal portions 134b(1) to 134b(3) has the same configuration as elongated structure 10 according to the first embodiment and functions in the same manner.

[0171] Although an example has been shown in which the pillar 500 has an L-shaped bent shape, the angle of bending is not limited to a right angle. The pillar 500 may also have a curved shape. Furthermore, the pillar 500 may have a shape that is bent or curved at multiple locations along the extension direction of the pillar 500. The shape of the pillar 500 may be determined appropriately depending on the shape and structure of a holding member to which the elongated structure 50 is attached, the function of the elongated structure 50, etc.

[0172] Furthermore, the elongated structure 50 according to the fifth embodiment may be provided with the flat portion 416 and the transition portion 418 of the elongated structure 40 according to the fourth embodiment in the columnar body 500. By providing the flat portion 416 in the columnar body 500, the shape of the second end portion 504 can be made into a substantially square prism shape. The second end portion 504 having a substantially square prism shape allows the elongated structure 50 to be stably held by a holding member (not shown) or the like.

[0173] <<<<<Scope of the Embodiments>>>> As described above, the first to fifth embodiments have been described. However, the descriptions and drawings that form part of this disclosure should not be understood as limiting. Various embodiments not described herein are also included.

[0174] The long structure can be used as an electronic device or a component for an electronic device by connecting various desired electronic components to the conductors formed on the surface. CROSS-REFERENCE TO RELATED APPLICATIONS

[0175] This application claims priority based on Japanese Patent Application No. 2023-194990, filed with the Japan Patent Office on November 16, 2023, the entire disclosure of which is incorporated herein by reference in its entirety.

[0176] 10, 20, 30, 40, 50 Long structure 100, 200, 300, 400, 500 Pillar 112a First groove 112b Second groove 132a First conductor 132b Second conductor

Claims

1. A columnar structure having an elongated shape, comprising: a long side portion; a plurality of grooves formed along at least a portion of the longitudinal direction of the side portion and spaced apart from one another; and a conductor formed on at least a portion of a groove surface of at least one of the plurality of grooves, the conductor being formed along the longitudinal direction of the groove.

2. A columnar structure as described in claim 1, further comprising: a first end; and a second end spaced apart from the first end along the longitudinal direction and positioned between the first end and the second end along the longitudinal direction, with the groove portion sandwiched therebetween; and the conductor is formed extending along the longitudinal direction from the first end to any position between the first end and the second end.

3. A columnar structure as described in claim 2, wherein the first end has an end face extending in a direction different from the longitudinal direction, the end face having an end face on which an electronic component can be mounted, the end face being electrically connected to the conductor and having a connection terminal portion that enables electrical connection with the electronic component.

4. The columnar structure according to claim 1, wherein the plurality of grooves are formed in the side surface portion in pairs of two different grooves facing each other.

5. The columnar structure according to claim 1, wherein the conductor has a connection terminal portion on at least a part of the side surface, which enables electrical connection with an electronic component.

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