JP2005166782A - Connection structure of electronic component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To fix an electronic component to the surface of a flexible wiring material. <P>SOLUTION: On the surface of an FFC 10 where conductors 11A and 11B wired in parallel are coated with a resin film 12, an electronic component such an LED lamp 20 is mounted. The input terminal 22 and the output terminal 23 of the electronic component 20 are bent into L-shape to form joints 22a and 23a in parallel with the conductors 11A and 11B. The joint 22a of the input terminal 22 and the joint 23a of the output terminal 23 are connected, respectively, with the conductor 11A constituting the input circuit of the FFC 10 and the conductor 11B constituting the output circuit thereof through piercing terminals 30A and 30B. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electronic component connection structure, and more particularly to a structure in which an electronic component including an LED lamp and a resistor is mounted on a surface of a flexible flat circuit body (FFC).

  2. Description of the Related Art LED lamps used for various types of lighting such as automobile interior lighting, indirect lighting, stop lamps, tail lamps, turn lamps, and other signal lights are used. In the circuit connection of this LED lamp, conventionally, the input terminals and output terminals of both side legs protruding from the lower part of the main body of the LED lamp are connected to the bus bar by press caulking or welding.

  However, the above-mentioned bus bar has a problem in that it is expensive because it requires a dedicated die, and there is a limit to the reduction of the wiring space and the degree of design freedom. The printed circuit board also has a problem in that it is expensive. Therefore, in order to solve these problems, it has been proposed to attach and connect the electronic component to a flexible wiring material formed by joining a flexible insulating coating material on both the front and back surfaces of a conductor.

  For example, in Japanese Patent Laid-Open No. 2002-270044 (Patent Document 1), as shown in FIG. 17, a conductor exposed portion 4 in which a flat conductor 3 is exposed by peeling off an insulating coating material 2 at a required portion of a flexible wiring material 1. A plurality of locations are provided, and the long and short input terminals 5a and output terminals 5b of the electronic component 5 are connected by soldering from the side edge of the conductor exposed portion 4, and the electronic component 5 is attached and connected to the flexible wiring member 1. Yes.

  However, since the soldering operation is performed for each connection location, there is a problem that a lot of labor is required and the workability is poor, and a connection failure is likely to occur when receiving some external interference. Moreover, it cannot be applied to the structure in which the electronic component 5 is mounted on the surface of the flexible wiring member 1 instead of the side edge, and there is a limit to the degree of freedom in design.

  On the other hand, as an example of the connection structure of the flexible wiring material, JP 2002-160591 (Patent Document 2) and JP 2003-77567 (Patent Document 3) disclose a connection structure using the piercing terminals 6A and 6B. Yes. That is, in Japanese Patent Laid-Open No. 2002-160591 (Patent Document 2), as shown in FIG. 18, the conductor 7a of the flexible wiring member 7 and the conductor 8a of another flexible wiring member 8 are connected to each other by the piercing terminal 6A. In Japanese Patent Application Laid-Open No. 2003-77567 (Patent Document 3), as shown in FIG. 19, a piercing terminal 6B is pierced and connected to the conductor 9a of the flexible wiring member 9, and a not-shown counterpart piercing terminal is fitted into the piercing terminal 6B. The structure to connect is shown.

  However, each of the connection structures using the piercing terminals 6A and 6B is a structure in which the conductor of the flexible wiring material is connected to another conductor or terminal adjacent on the same plane, and the surface of the flexible wiring material (upper and lower surfaces). It does not indicate the connection structure with conductors and terminals to be mounted.

JP 2002-270044 A JP 2002-160591 A JP 2003-77567 A

  The present invention has been made in view of the above problems, and has an electronic component connection structure for easily and reliably connecting an electronic component such as an LED lamp mounted on the surface of a flexible wiring material to a conductor of the flexible wiring material. Offering is an issue.

  In order to solve the above-mentioned problem, the present invention mounts an electronic component including an LED lamp and a resistor on the surface of an FFC (flexible flat circuit) in which conductors wired in parallel are covered with a resin film, The input terminal and the output terminal of the electronic component are bent into an L shape protruding in a direction away from each other to form a connection portion that is placed on the conductor of the FFC, and the connection portion of the input terminal and the output terminal A connection structure for an electronic component is proposed in which the connection portion is connected to the conductor constituting the input circuit of the FFC and the conductor constituting the output circuit via a piercing terminal.

  In this way, by bending the input terminal and output terminal of an electronic component such as an LED lamp and forming a connection portion protruding in the direction away from each other at the tip, the electronic component is mounted on the surface of the flexible wiring material. Even in this case, the terminal can be positioned on the upper surface of the conductor that is wired with a gap, and the input terminal and output terminal of the electronic component can be connected to the conductor of the flexible wiring member using the piercing terminal. Therefore, it is low-cost and space-saving compared to mounting and connecting electronic components to bus bars and printed circuit boards, and it has better workability than connecting by soldering. The degree of freedom in design is improved by attaching to the surface.

  The piercing terminal is formed by bending a conductive metal plate, spring contact pieces are provided inside the box part, and the pierced part protrudes from the side edges of the plate piece part protruding from the left and right ends of the box part. In addition, a terminal insertion slot and a terminal guide groove continuous to the terminal insertion slot are provided on two side surfaces adjacent to each other of the box part, and the piercing part of the piercing terminal is stabbed into the FFC to contact the conductor, and the terminal insertion is performed. The connection part of the electronic component may be inserted from the mouth along the terminal guide groove, and may be pressed and electrically connected to the spring contact piece. This structure is suitable for an electronic component mounting structure in which the input terminal and the output terminal have a flat plate shape in order to increase the contact area with the spring contact piece.

  Further, the piercing terminal is formed into a U shape by bending a conductive metal plate, and a plurality of the piercing portions are provided at the ends of both sides bent from the central flat plate portion, and the central flat plate portion of the piercing terminal is The electronic component may be covered with the connecting portion and pressed against the surface of the FFC, and the pierced portion may be pierced into the FFC and connected to the conductor. This structure is suitable for an electronic component mounting structure in which the input terminal and the output terminal have a flat plate shape in order to increase the contact area with the central flat plate portion.

  Alternatively, the piercing terminal is bent into a U shape by bending a conductive metal plate, and a plurality of piercing portions are provided at the ends of both sides bent from the central flat plate portion, and the piercing portion of the piercing terminal is connected to the FFC. It stabs from the back side to contact the conductor, and the pierced part projected to the front side of the FFC is bent to cover the connecting part of the electronic component and fix the electronic component to the FFC and to make electrical connection You may let them. In order to increase the contact area with the curved piercing portion, this structure is suitable for an electronic component mounting structure in which the input terminal and output terminal constitute a lead portion having a round cross section.

Further, the present invention provides a structure in which an LED lamp or a resistor terminal mounted on the FFC is electrically connected to the FFC conductor by laser welding or resistance welding instead of the piercing terminal.
Specifically, first, an electronic component including an LED lamp and a resistor is mounted on the surface of an FFC (flexible flat circuit) in which conductors wired in parallel are covered with a resin film. The input terminal and the output terminal of the FFC are bent in an L shape protruding in a direction away from each other and placed on the conductor of the FFC, while the resin film on which the input terminal and the output terminal are placed is peeled off. Thus, a connection structure is provided in which the conductor is exposed and the conductor and the input terminal and the output terminal are directly electrically connected by laser welding or resistance welding, respectively.

  Second, electronic components including LED lamps and resistors are mounted on the surface of an FFC (flexible flat circuit) in which conductors wired in parallel are covered with a resin film. While the terminal is bent into an L shape protruding in a direction away from each other, a pair of welding terminals for fitting and connecting the input terminal and the output terminal are provided, and the welding terminal is peeled off from the resin film. Provided is a connection structure in which a conductor is brought into contact with an exposed portion and electrically connected by laser welding or resistance welding.

  When connected by laser welding or resistance welding as described above, a piercing terminal as a separate member can be dispensed with.

  As described above, according to the electronic component connection structure of the present invention, it is possible to mount and connect an electronic component such as an LED lamp on the surface of the FFC. It is possible to respond to requests to reduce the search space. In addition, the connection structure is less expensive than the case where electronic components are attached and connected to a bus bar or a printed circuit board, and the workability and connection reliability are improved as compared to the connection by soldering.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a connection structure of electronic components according to the first embodiment of the present invention. In this embodiment, an LED lamp 20 is attached and connected to the surface of the FFC 10 using a piercing terminal 30.

As shown in FIG. 1, the FFC 10 is formed by arranging parallel conductors 11A, 11B,... In parallel with a gap, and bonding and covering both front and back surfaces with a resin film 12 made of polyethylene.
The LED lamp 20 includes a translucent resin portion 21 in which a lead frame, an LED chip and the like are cast, an input terminal 22 and an output terminal 23 (leg portion) extending downward from the bottom of the resin portion 21. The input terminal 22 and the output terminal 23 are bent in an L shape in a direction away from each other to form horizontal plate-like connection portions 22a and 23a at the tips. The connecting portion 22a is placed on the upper surface of the FFC flat-angle conductor 11A constituting the input circuit, and the connecting portion 23a is placed on the upper surface of the flat-angle conductor 11B constituting the output circuit.

The piercing terminal 30 (30A, 30B) is formed by bending a conductive metal plate. As shown in FIGS. 2A and 2B, the box portion 31 into which the terminal is inserted, and the box A plate spring-like spring contact piece 32 provided inside the portion 31 and a pair of left and right plate piece portions 33 projecting from both left and right ends of the box portion 31 are provided. On both side ends of each plate piece portion 33, two piercing portions 34 are provided on one side end and one piercing portion 34 is provided on the other side end. The piercing portion 34 has a lower end. It has an inverted triangular shape with a pointed end.
The spring contact piece 32 is curved and projected from the bottom surface 31c of the box portion 31, and the projecting direction is the same as the projecting direction of the left and right plate piece portions 33, and the spring action is the vertical direction. It is said. Further, in the box portion 31, a terminal insertion port 35 is formed on the side surface 31a on the mounting end 32a side of the spring contact piece 32, and a horizontal terminal guide groove 36 continuous from the terminal insertion port 35 over the adjacent side surface 31b. Is forming. The piercing terminal 30A and the piercing terminal 30B are formed in a symmetrical shape so that the terminal insertion port 35 faces the same direction and the terminal guide grooves 36 face each other.

A method of mounting and connecting the LED lamp 20 on the surface of the FFC 10 using the piercing terminals 30A and 30B will be described.
First, as shown in FIG. 3A, the piercing terminal 30 </ b> A and the piercing terminal 30 </ b> B are located at positions adjacent to each other on the surface of the conductor 11 </ b> A of the input circuit and the surface of the conductor 11 </ b> B of the output circuit. The pierced portion 34 is pierced from the top of the resin film 12, and the pierced portion 34 protruding from the back surface 10b of the FFC 10 in FIG. At this time, the piercing terminal 30A and the piercing terminal 30B are pierced and fixed so that the terminal insertion opening 35 faces the same direction and the terminal guide grooves 36 face each other.
Next, as shown in FIG. 3C, the connection portion 22a of the input terminal 22 of the LED lamp 20 is connected to the connection portion 23a of the output terminal 23 of the LED lamp 20 from the terminal insertion port 35 of the piercing terminal 30A. Are simultaneously inserted horizontally along the terminal guide groove 36 between the spring contact piece 32 and the box portion upper surface 31d from the terminal insertion port 35 of the piercing terminal 30B.

  As a result, as shown in FIGS. 1 and 4, the piercing terminals 30A, 30B and the conductors 11A, 11B of the FFC 10 are electrically connected by the piercing portions 34 coming into contact with the conductors 11A, 11B, respectively. The LED lamp 20 and the piercing terminals 30A and 30B are electrically connected by connecting the connecting portions 22a and 23a of the input terminal 22 and the output terminal 23 of the LED lamp 20 to the spring contact pieces 32 of the piercing terminals 30A and 30B. Therefore, the LED lamp 20 can be connected to the conductors 11A and 11B of the FFC 10 via the piercing terminals 30A and 30B, and at the same time, the LED lamp 20 can be mounted and fixed on the surface 10a of the FFC 10. In addition, troublesome work such as resin film peeling work and soldering is not required, and workability is high. By mounting and connecting the LED lamp 20 to the surface 10a of the FFC 10, the degree of freedom in design is increased and the layout space is increased. Can be saved, and the cost can be reduced as compared with the case where it is mounted on a bus bar or a printed circuit board. Furthermore, according to the above configuration, the LED lamp 20 can be attached to and detached from the FFC 10, so that repair and replacement are facilitated.

  5 to 8 show a second embodiment of the present invention, in which the shape of the piercing terminal 40 is different from that of the first embodiment, and accordingly, the procedure for attaching and connecting the LED lamp is also different from that of the first embodiment. However, since the other structure is the same as that of said 1st embodiment, it attaches | subjects the same code | symbol and abbreviate | omits description.

  The piercing terminal 40 is formed in a U shape by bending a conductive metal plate, and as shown in FIG. 6, a central flat plate portion 41 and both side portions 42 bent downward from the central flat plate portion 41, , And three piercing portions 43 projecting downward at the tips of the side portions 42. The piercing portion 43 has an inverted triangular shape having a pointed portion at the lower end.

  The method of mounting and connecting the LED lamp 20 to the surface 10a of the FFC 10 using the piercing terminal 40 is as follows. First, as shown in FIG. 7A, the conductor 11A of the input circuit on the surface 10a of the FFC 10 is connected. The connection part 22a of the input terminal 22 of the LED lamp 20 is placed on the surface, and the connection part 23a of the output terminal 23 of the LED lamp 20 is placed on the surface of the conductor 11B of the output circuit, respectively. Next, the piercing portion 43 is pierced into the FFC 10 so that the central flat plate portion 41 of the two piercing terminals 40 is placed on the connection portions 22a and 23a of the LED lamp 20, respectively. At this time, as shown in FIG. 5, the both sides of the connecting portions 22 a and 23 a are sandwiched between the both side portions 42 of the piercing terminal 40, and the piercing portion 43 is moved from the top of the resin film 12 to the central flat plate portion. After 41 penetrates deeply until it contacts the upper surfaces of the connecting parts 22a and 23a and penetrates the conductors 11A and 11B, as shown in FIG. 7B, the tip of the pierced part 43 protruding to the back surface 10b of the FFC 10 is inserted. Bend inside.

  Thereby, as shown in FIG. 5 and FIG. 8, the piercing terminal 40 and the conductors 11A and 11B of the FFC 10 are electrically connected by the piercing portions 43 penetrating and contacting the conductors 11A and 11B, respectively. The LED lamp 20 and the piercing terminal 40 are electrically connected by connecting the connecting portions 22a and 23a of the input terminal 22 and the output terminal 23 of the LED lamp 20 with the central flat plate portion 41 of the piercing terminal 40. The LED lamp 20 can be connected to the conductors 11A and 11B of the FFC 10 via the piercing terminal 40, and at the same time, the LED lamp 20 can be mounted and fixed on the surface 10a of the FFC 10.

  9 to 12 show an electronic component connection structure according to the third embodiment of the present invention. The shape of the LED lamp 20 ′ and the shape of the piercing terminal 50 are different from those of the second embodiment. Since it is the same as that of 2nd embodiment in a point, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The LED lamp 20 ′ includes a translucent resin portion 21 ′ in which a lead frame, an LED chip and the like are cast, and an input terminal 22 ′ and an output terminal 23 ′ (lower than the bottom portion of the resin portion 21 ′). Leg). Both the input terminal 22 ′ and the output terminal 23 ′ are made of a round conductor, and are bent in an L shape in a direction away from each other to form connecting portions 22 a ′ and 23 a ′ extending horizontally.

  The piercing terminal 50 is formed in a U shape by bending a conductive metal plate. As shown in FIG. 10, the piercing terminal 50 is bent upward from both sides of the central flat plate portion 51 and the central flat plate portion 51. It consists of a protruding piercing portion 52. The piercing portion 52 has a substantially triangular shape with a sharpened tip. Two piercing portions 52 on one side edge of the central flat plate portion 51 and one on the opposite other side edge from a position where the three piercing portions 52 do not face each other. It is protruding.

  The method of mounting and connecting the LED lamp 20 ′ to the surface 10a of the FFC 10 using the piercing terminal 50 is as follows. First, the input terminal of the LED lamp 20 ′ is connected to the surface of the conductor 11A of the input circuit among the surface 10a of the FFC 10. The connecting portion 22a ′ of 22 ′ is placed on the surface of the conductor 11B of the output circuit, and the connecting portion 23a ′ of the output terminal 23 ′ of the LED lamp 20 ′ is placed on the resin film 12, respectively. Next, as shown in FIG. 11A, the piercing portions 52 of the two piercing terminals 50 are placed on the back surface 10b side of the FFC 10 at positions corresponding to the connecting portions 22a ′ and 23a ′, and the central flat plate portion 51 It pierces deeply until it contacts the back surface 10b of the FFC 10, penetrates through the conductors 11A and 11B, and protrudes toward the front surface 10a of the FFC 10 as shown in FIG. Finally, as shown in FIG. 9, the piercing portions 52 protruding from the surface 10a are bent and bent inward, and are put on and contacted with the connecting portions 22a 'and 23a' of the LED lamp 20 '.

As a result, as shown in FIGS. 9 and 12, the piercing terminal 50 and the conductors 11A and 11B of the FFC 10 are electrically connected by the piercing portions 52 penetrating and contacting the conductors 11A and 11B, respectively. The LED lamp 20 ′ and the piercing terminal 50 are electrically connected to each other when the connection portions 22 a ′ and 23 a ′ of the input terminal 22 ′ and the output terminal 23 ′ of the LED lamp 20 ′ are in contact with the piercing portion 52 of the piercing terminal 50. For connection, the LED lamp 20 ′ can be connected to the conductors 11A and 11B of the FFC 10 via the piercing terminal 50, and at the same time, the LED lamp 20 ′ can be mounted and fixed on the surface 10a of the FFC 10.
Further, the connecting portions 22a ′ and 23a ′ of the LED lamp 20 ′ are round conductors, but the piercing portion 52 is bent to be bent along the outer periphery of the connecting portions 22a ′ and 23a ′ as much as possible. A large contact area between the portion 52 and the connecting portions 22a ′ and 23a ′ can be secured, and the fixing force of the LED lamp 20 ′ to the FFC 10 can be increased.

  FIG. 13 shows a fourth embodiment, in which a resistor 60 is mounted on the FFC 10 instead of an LED lamp, and an input terminal 62 and an output terminal 63 made of lead wires protruding from both sides of the body 61 of the resistor 60 The piercing terminal 50 used in the third embodiment is electrically connected to the conductors 11A and 11B of the FFC 10.

  In the fifth embodiment of FIG. 14 to the seventh embodiment of FIG. 16, the conductors 11A and 11B of the FFC 10 are connected to the LED lamp 20 or the resistor 60 by laser welding or resistance welding instead of using the piercing terminal 50.

  In the fifth embodiment of FIG. 14, the conductors 11A and 11B in which the connection portions 22a and 23a of the input terminal 22 and the output terminal 23 bent into an L shape of the LED lamp are exposed by peeling the upper surface side insulating film 12 of the FFC 10. The laser welding 100 is performed in this state. The terminal of the LED lamp and the FFC conductor are electrically connected by the welding.

In the sixth embodiment of FIG. 15, a welding terminal 70 having a shape in which the piercing portion 34 is removed from the piercing terminal 20 used in the first embodiment is provided, and the welding terminal 70 is connected to the upper surface side insulating film 12 of the FFC 10. Is placed in contact with the exposed conductors 11A and 11B, and laser welding 100 is performed in this state. The terminal of the LED lamp and the conductor of the FFC are electrically connected by the welding.
Specifically, the welding terminal 70 (70A, 70B) protrudes from a box part 71 into which the terminal is inserted, a leaf spring-like spring contact piece 72 provided inside the box part 31, and left and right ends of the box part 71. And a pair of left and right plate pieces 73 provided. A terminal insertion opening 75 is formed on the side surface of the box portion 71.
A pair of welding terminals 70 are placed on the conductors 11A and 11B from which the upper surface insulating film of the FFC 10 is peeled off and laser-welded, and the input terminal 22 and the output terminal 23 of the LED 20 are fitted and connected to the welding terminals 70. doing.

  In the seventh embodiment of FIG. 16, both side terminals 61 and 62 of the resistor 60 are placed on the conductors 11A and 11B from which the upper surface insulating film of the FFC 10 has been peeled off, resistance-welded, and electrically connected.

  In the present invention, an electronic component such as an LED lamp or a resistor is directly mounted on the FFC, the terminal is placed on the conductor of the FFC, and connected to the conductor using a piercing terminal, or laser welding or resistance welding is performed. Therefore, it is possible to easily connect the electronic components by arranging them at arbitrary positions. As a result, the degree of freedom in design can be increased and the connection work can be easily performed. Therefore, it becomes a suitable connection form of various LED lamps and resistors mounted on the automobile.

It is a perspective view which shows the connection structure of the electronic component which concerns on 1st Embodiment of this invention. The piercing terminal shown in FIG. 1 is shown, (A) is a perspective view, and (B) is a sectional view taken along line BB. (A) (B) (C) is a perspective view which shows the procedure which mounts and connects an LED lamp to FFC shown in FIG. It is the IV-IV sectional view taken on the line of FIG. It is a perspective view which shows the connection structure of the electronic component which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the piercing terminal shown in FIG. (A) (B) is a perspective view which shows the procedure which mounts and connects an LED lamp to FFC shown in FIG. It is the VIII-VIII sectional view taken on the line of FIG. It is a perspective view which shows the connection structure of the electronic component which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the piercing terminal shown in FIG. (A) (B) is a perspective view which shows the procedure which mounts and connects an LED lamp to FFC shown in FIG. FIG. 10 is a line sectional view of FIG. 9. It is a perspective view which shows the connection structure of the electronic component of 4th Embodiment of this invention. It is a perspective view which shows the connection structure of the electronic component of 5th Embodiment of this invention. It is a perspective view which shows the connection structure of the electronic component of 6th Embodiment of this invention. It is a perspective view which shows the connection structure of the electronic component of 7th Embodiment of this invention. It is a figure of a prior art example. It is a figure of another prior art example. It is a figure of another prior art example.

Explanation of symbols

10 FFC
11A, 11B Conductors 20, 20 ′ LED lamps 22, 22 ′ Input terminals 23, 23 ′ Output terminals 22a, 22a ′, 23a, 23a ′ Connection portions 30 (30A, 30B), 40, 50 Piercing terminals 34, 43, 52 Puncture part 60 resistor

Claims (6)

  Electronic components including LED lamps and resistors are mounted on the surface of an FFC (flexible flat circuit) in which conductors wired in parallel are covered with a resin film, and the input terminals and output terminals of the electronic components are connected to each other. A connection portion that is bent into an L shape protruding in a separating direction and is placed on the conductor of the FFC is formed, and the connection portion of the input terminal and the connection portion of the output terminal constitute the input circuit of the FFC. An electronic component connection structure, wherein the conductor and the conductor constituting the output circuit are connected to each other through a piercing terminal. The piercing terminal is formed by bending a conductive metal plate, spring contact pieces are provided inside the box part, and the pierced part protrudes from the side edges of the plate piece part protruding from the left and right ends of the box part. And provided with a terminal insertion slot and a terminal guide groove continuous to the terminal insertion slot on two side surfaces adjacent to each other of the box part,
The piercing portion of the piercing terminal is pierced into the FFC and brought into contact with the conductor, and the connection portion of the electronic component is inserted along the terminal guide groove from the terminal insertion port to be pressed against the spring contact piece for electrical connection. The electronic component connection structure according to claim 1, wherein The piercing terminal is formed into a U shape by bending a conductive metal plate, and a plurality of piercing portions are provided at the ends of both side portions bent from the central flat plate portion,
The center flat plate portion of the piercing terminal is placed on the connecting portion of the electronic component so as to press and contact the surface of the FFC, and the piercing portion is pierced into the FFC and connected to the conductor. Connection structure of the electronic component described. The piercing terminal is formed by bending a conductive metal plate into a U shape, and provided with a plurality of piercing portions at the ends of both side portions bent from the central flat plate portion,
The piercing portion of the piercing terminal is pierced from the back surface side of the FFC and brought into contact with the conductor, and the piercing portion protruded from the front surface side of the FFC is bent and covered with the connection portion of the electronic component. The electronic component connection structure according to claim 1, wherein the electronic component is fixed to the FFC and electrically connected.   Electronic components including LED lamps and resistors are mounted on the surface of an FFC (flexible flat circuit) in which conductors wired in parallel are covered with a resin film, and the input terminals and output terminals of the electronic components are connected to each other. Bending into an L shape protruding in a separating direction and placing on the conductor of the FFC, while peeling the resin film on which the input terminal and output terminal are placed to expose the conductor, A connection structure for an electronic component, wherein the input terminal and the output terminal are electrically connected by laser welding or resistance welding, respectively. Electronic components including LED lamps and resistors are mounted on the surface of an FFC (flexible flat circuit) in which conductors wired in parallel are covered with a resin film, and the input terminals and output terminals of the electronic components are connected to each other. While bending to the L shape protruding in the direction of separating,
A pair of welding terminals for fitting and connecting the input terminal and the output terminal are provided, and these welding terminals are brought into contact with a portion where the resin film is peeled and the conductor is exposed, and laser welding or resistance welding is performed. Electronic component connection structure characterized by electrical connection.

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