JP5635881B2 - Automotive headlamp lighting device - Google Patents

Description

  The present invention relates to an on-vehicle headlamp lighting device.

  2. Description of the Related Art Conventionally, a terminal provided in an in-vehicle headlamp lighting device that lights a vehicle headlamp includes two input terminals to which a positive electrode and a negative electrode of a battery are connected, and a headlamp (lamp) that is a load. And an output terminal connected to the. In addition, an in-vehicle headlamp lighting device that includes an input terminal and an output terminal separately, and includes an input coupler that includes the input terminal and an output coupler that includes the output terminal is also provided (for example, Patent Document 1).

  FIG. 12A shows an exploded perspective view of a conventional in-vehicle headlamp lighting device 100. The in-vehicle headlamp lighting device 100 is configured by housing a lighting circuit unit 103 in a metal case body 101.

  The case body 101 is formed in a rectangular box shape with one surface opened, and an input coupler 102 is provided so as to close the hole 101a opened in the side wall.

  The lighting circuit unit 103 includes a circuit component 103a that constitutes a lighting circuit for a headlamp, an output coupler 103b, and a mounting board 103c on which the circuit component 103a and the output coupler 103b are mounted. As shown in FIG. 12B, the input coupler 102 is provided with a pair of input terminals 102a, and the mounting substrate 103c is provided with a pair of through holes 103d through which the input terminals 102a are inserted. In the case body 101, the input terminals 102a of the input couplers 102 are respectively soldered in the through holes 103d so as to be electrically connected.

  Then, the lighting circuit unit 103 converts the DC power supplied from the battery via the input coupler 102 to generate lamp power, and supplies the lamp power to the headlamp via the output coupler 103b.

  The in-vehicle headlamp lighting device 100 is provided with a cation-coated flange 104 that covers the opening of the case body 101, and can be attached to the lamp body of the headlamp using the flange 104.

  A frame-shaped waterproof sealing material 105 is provided between the case body 101 and the flange 104. The waterproof sealing material 105 is formed of an elastic body, and the airtightness / waterproofness can be improved by closing the gap between the case body 101 and the flange 104.

  In the process of assembling such an in-vehicle headlamp lighting device 100, an automatic soldering robot is used when soldering the input terminal 102a of the input coupler 102 and the mounting board 103c.

  A schematic operation of the automatic soldering robot will be described with reference to FIGS.

  This automatic soldering robot performs soldering using a pair of soldering irons 201. The soldering iron 201 is formed to have an approximately V shape with the tip ends of the soldering irons 201 joined to each other, and the tip ends of the soldering irons 201 are configured to be openable and closable.

  First, the soldering iron 201 is heated (FIG. 13A).

Next, the tip of the soldering iron 201 is opened, and the soldering iron 201 is brought close to the mounting substrate 103c (FIG. 13B). Then, the thread solder 202a is brought close to the soldering iron 201 from above the soldering iron 201 (FIG. 13C).

  Again, the tip of the soldering iron 201 is closed, the tip of the thread solder 202a is sandwiched and melted, and the molten solder 202b is generated above the joint of the soldering iron 201 (FIG. 13 (d)).

  In this state, the tip of the soldering iron 201 is opened, and the molten solder 202b descends along the contact surface between the soldering irons 201 (FIG. 13 (e)).

  With the molten solder 202b arriving at the substrate 202, the tip of the soldering iron 201 is closed and the molten solder 202b is attached to the substrate 202 (FIG. 13 (f)).

  Then, by raising the soldering iron 201, the molten solder 202b on the substrate 202 is cooled, and the cooled solder 202c is generated, and the soldering to the substrate 202 is completed (FIG. 13 (g)).

  As shown in FIG. 14, when an abnormality occurs in the headlamp lighting device 301 mounted on the vehicle 300, an abnormality notification signal S101 is output to an external device (not shown) to notify the user of the abnormality. There is a headlamp lighting device 301 having a function.

  The headlamp lighting device 301 is connected to a battery power source 302 and an ignition power source 303 (IGN power source). The headlamp lighting device 301 generates lamp power and supplies it to the passing headlamp 304, thereby passing the passing headlamp. 304 is turned on. Further, when the headlamp lighting device 301 detects a load abnormality of the passing headlamp 304, the headlamp lighting device 301 notifies the user of the abnormality by outputting an abnormality notification signal S101 to an external device.

  In recent years, as a headlamp used in a vehicle, an LED lamp 402 is used instead of a halogen lamp or an HID lamp, as shown in FIG. The in-vehicle headlamp lighting device 401 is attached to the lower surface portion of the lamp 403.

  The input / output coupler 401a provided in the in-vehicle headlamp lighting device 401 includes three input terminals to which a low beam switch power source, an ignition power source, and a power ground are connected to be supplied with power. Moreover, since it is necessary to output the abnormality notification signal generated by the vehicle headlamp lighting device 401 to the outside of the lamp 403, the input / output coupler 401a of the vehicle headlamp lighting device 401 is connected to an external device, One output terminal for outputting an abnormality notification signal is provided. In other words, the input / output coupler 401a includes four terminals 401b including three input terminals and one output terminal.

  The headlamp shown in FIG. 15 includes three LED lamps 402. The LED lamp 402 is provided with an LED unit 402b on a heat radiating plate 402a, and the LED unit 402b is connected to an in-vehicle headlamp lighting device 401 via an output coupler 401c. The LED lamp 402 includes an optical unit 402e including a reflector 402c and a lens 402d, and irradiates light emitted from the LED unit 402b toward the front of the vehicle using the optical unit 402e.

JP 2009-43671 A

  When soldering to the mounting board 103c using the automatic soldering robot shown in FIGS. 13A to 13G, it is necessary to bring the soldering iron 201 close to the mounting board 103c. Therefore, a dead space in which circuit components and input / output coupler terminals cannot be provided around the soldering area on the mounting substrate 103c is necessary. Note that the automatic soldering robot shown in FIG. 13 requires a dead space of about 5 mm. In addition, the in-vehicle headlamp lighting device is required to be small and light, and it is necessary to reduce the mounting space for the terminals of the input / output coupler.

As shown in FIG. 12, when the input coupler 102 including the two input terminals 102a is mounted on the mounting substrate 103c, it is easy to ensure a dead space between the input terminals 102a. However, when the number of terminals increases, it becomes difficult to secure a dead space, and it becomes difficult to mount the terminals.

  For example, as shown in FIG. 15, since the input / output coupler 401a includes four terminals 401b, it is difficult to secure a dead space between the terminals 401b and to reduce the mounting space of the terminals 401b. Met. When the automatic soldering robot shown in FIG. 13 is used, since the distance between the terminals 401b needs to be 5 mm or more, the mounting space for the terminal 401b is at least 15 mm, and the mounting space occupied by the terminal 401b is required. Will increase.

  The present invention has been made in view of the above reasons, and an object of the present invention is to reduce the mounting space of the input / output coupler with a terminal configuration in which the input / output coupler can be easily soldered using an automatic soldering robot. The object is to provide a vehicle headlamp lighting device.

The on-vehicle headlamp lighting device of the present invention is used for connection of at least an external power source, an input / output coupler having at least four terminals arranged in parallel, an output coupler used for connection of the headlamp, The input / output coupler is mounted, and power supplied from the external power source is converted through the input / output coupler to generate lamp power, and the lamp power is supplied to the headlamp through the output coupler. A mounting board constituting a lighting circuit portion, the mounting board has a through hole through which one end of the terminal is inserted, and the one end of the terminal is directed from one side of the mounting board to the other side. Inserted through the through-hole and soldered on the other surface side of the mounting substrate, the through-hole along the outer peripheral edge of the mounting substrate and the outer through-hole close to the outer peripheral edge of the mounting substrate; The Formed a farther inside the through hole from an outer peripheral edge of the mounting substrate as compared with Horu so that staggered alternately repeated, the external power source, a first DC power source and said first DC power supply from the power supply capacity The four or more terminals include a first power supply terminal to which a high-voltage side of the first DC power supply is connected, and the first DC power supply. A ground terminal to which a low-voltage side of a power source is connected, the first power terminal and the ground terminal are inserted through the inner through hole, and the mounting board is housed in a metal case, A metal material for electrically connecting the frame ground of the mounting board and the case is further provided .

The on-vehicle headlamp lighting device of the present invention is used for connection of at least an external power source, an input / output coupler having at least four terminals arranged in parallel, an output coupler used for connection of the headlamp, The input / output coupler is mounted, and power supplied from the external power source is converted through the input / output coupler to generate lamp power, and the lamp power is supplied to the headlamp through the output coupler. A mounting board constituting a lighting circuit portion, the mounting board has a through hole through which one end of the terminal is inserted, and the one end of the terminal is directed from one side of the mounting board to the other side. Inserted through the through-hole and soldered on the other surface side of the mounting substrate, the through-hole along the outer peripheral edge of the mounting substrate and the outer through-hole close to the outer peripheral edge of the mounting substrate; The Formed a farther inside the through hole from an outer peripheral edge of the mounting substrate as compared with Horu so that staggered alternately repeated, the external power source, a first DC power source and said first DC power supply from the power supply capacity The four or more terminals are connected to a first power supply terminal to which a high voltage side of the first DC power supply is connected and one or more of the one or more second DC power supplies. A second power supply terminal to which each high-voltage side of the second DC power supply is connected, a ground terminal to which the first power supply terminal and the low-voltage side of the second power supply terminal are connected, and a signal to an external device The second power supply terminal is inserted into the outer through hole, and the signal output terminal is inserted into the outer through hole located at one end of the terminals in the parallel arrangement direction. It is characterized by doing.

The on-vehicle headlamp lighting device of the present invention is used for connection of at least an external power source, an input / output coupler having at least four terminals arranged in parallel, an output coupler used for connection of the headlamp, The input / output coupler is mounted, and power supplied from the external power source is converted through the input / output coupler to generate lamp power, and the lamp power is supplied to the headlamp through the output coupler. A mounting board constituting a lighting circuit portion, the mounting board has a through hole through which one end of the terminal is inserted, and the one end of the terminal is directed from one side of the mounting board to the other side. Inserted through the through-hole and soldered on the other surface side of the mounting substrate, the through-hole along the outer peripheral edge of the mounting substrate and the outer through-hole close to the outer peripheral edge of the mounting substrate; The Formed a farther inside the through hole from an outer peripheral edge of the mounting substrate as compared with Horu so that staggered alternately repeated, the external power source, a first DC power source and said first DC power supply from the power supply capacity The four or more terminals are connected to a first power supply terminal to which a high voltage side of the first DC power supply is connected and one or more of the one or more second DC power supplies. A second power supply terminal to which each high voltage side of the second DC power supply is connected; a ground terminal to which the low voltage side of the first DC power supply is connected; and another terminal. Through-holes through which the respective terminals are inserted are formed in the order of the first power supply terminal, the second power supply terminal, the ground terminal, and the other terminals, and the second power supply terminal is inserted therethrough. Near the through-hole Wherein the land terminal and electrically connected to the ground pattern is formed.

  As described above, the present invention has an effect of reducing the mounting space of the input / output coupler with the terminal configuration in which the input / output coupler can be easily soldered using the automatic soldering robot.

It is a disassembled perspective view of the lighting device of Embodiment 1 of the present invention. It is a block block diagram of the lighting circuit part same as the above. It is a block block diagram of the lighting circuit part same as the above. (A)-(c) It is an external view of the input / output coupler same as the above. It is a top view of the same mounting substrate and input / output coupler. (A)-(d) It is the schematic which shows the position structure of the through hole of the mounting board | substrate same as the above. It is a wave form diagram which shows an example of a surge. (A)-(d) It is a wave form diagram which shows an example of a surge. FIG. 6 is a schematic view of a mounting substrate 3 of Embodiment 2. FIG. 10 is a diagram illustrating wiring near a through hole according to a third embodiment. FIG. 6 is a diagram illustrating wiring near a through hole according to a fourth embodiment. (A) It is a disassembled perspective view of the conventional lighting device. (B) It is a perspective view of the conventional input coupler. (A)-(g) It is the schematic which shows the soldering operation | movement of an automatic soldering robot. It is a block block diagram of the conventional lighting device. It is a schematic block diagram of a headlamp.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
The schematic block diagram of the vehicle-mounted headlamp lighting device 1 (hereinafter abbreviated as the lighting device 1) of the present embodiment is shown in FIG. The lighting device 1 includes a case body 11, an input / output coupler 2, a mounting substrate 3, a flange 12, and a waterproof seal material 13, and is provided in a headlamp.

  The lighting device 1 of the present embodiment is supplied with power from a battery mounted on the vehicle. In this embodiment, there are two routes: a path for supplying power from the battery to the lighting device 1 via the battery fuse, and a route for supplying power to the lighting device 1 from the battery via the ignition fuse and the switch linked to the ignition key. There is a route. In the present invention, for convenience, the power supplied via the battery fuse is referred to as battery power supply E1 (first power supply), and the power supplied via the ignition fuse and switch is referred to as ignition power supply E2 (second power supply). The capacity of the battery fuse is larger than the capacity of the ignition fuse. This configuration corresponds to the power capacity of the present invention, and the battery power supply E1 has a power capacity larger than that of the ignition power supply E2.

  The ignition power source E2 is turned on when the ignition key is operated and the engine is started, and power is supplied from the battery to the lighting device 1.

  The case body 11 is open on one side, is cation-coated, is formed in a rectangular box shape made of metal such as aluminum die casting, and includes a mounting substrate 3 constituting the lighting circuit portion 33 inside. The mounting substrate 3 is accommodated by covering the opening of the case body 11 with a flange 12 coated with a cation. The flange 12 is formed with an opening 121 through which the output coupler 35 mounted on the mounting substrate 3 is inserted. When the lighting device 1 is provided in the lamp, the output coupler 35 and the light source 4 ( (See FIG. 2). Further, a frame-shaped waterproof sealing material 13 is provided between the case body 11 and the flange 12. The waterproof sealing material 13 is formed of an elastic body and can improve airtightness and waterproofness by closing a gap between the case body 11 and the flange 12.

Further, when the lighting device 1 is provided on the lamp, the input / output coupler 2 is inserted into the side wall of the case body 11 in order to connect the mounting board 3 to the battery power supply E1, the ignition power supply E2, and the external device outside the lamp. A substantially rectangular opening 111 is provided. The opening 111 is closed by inserting one end of the input / output coupler 2 and fixing the input / output coupler 2 to the case body 11 with two screws 112.

  As shown in FIGS. 4A to 4C, the input / output coupler 2 has four terminals 21 arranged in parallel. When the four terminals 21 are individually identified, they are referred to as terminals 21a, 21b, 21c, and 21d. In the present embodiment, the terminals 21a to 21d are connected as follows. The terminal 21a is connected to the positive electrode (high voltage side) of the battery power supply E1. The terminal 21b is connected to the positive electrode (high voltage side) of the ignition power supply E2. The terminal 21c is connected to the negative electrode (low voltage side) of the battery power supply E1 and the ignition power supply E2. And the power supply is supplied to the lighting circuit part 33 via the terminals 21a-21c. Further, the terminal 21d is connected to an external device, and when an abnormality occurs in the lighting circuit unit 33 or the load, an abnormality notification signal S1 is output from the lighting circuit unit 33 to the external device. In the present embodiment, the terminal 21a corresponds to the first power supply terminal, the terminal 21b corresponds to the second power supply terminal, the terminal 21c corresponds to the ground terminal, and the terminal 21d corresponds to the signal output terminal.

  FIG. 2 shows a block configuration diagram of the lighting circuit unit 33.

  The lighting circuit unit 33 includes a control circuit 331, a control power supply circuit 332, an input filter unit 333, a DC / DC converter 334, and an output filter unit 335.

  The DC / DC converter 334 includes a power conversion unit 334a, a voltage detection unit 334b, and a current detection unit 335b. The power conversion unit 334a includes a transformer, a switching element, a diode, and the like (not shown). The power conversion unit 334a converts the battery voltage V1 supplied from the battery power supply E1 through the input filter unit 333 to generate the lamp voltage V2. . The power conversion unit 334a supplies the lamp voltage V2 to the light source 4 (headlight) via the output filter unit 335, so that the light source 4 is turned on.

  The light source 4 of the present embodiment is configured by an LED unit, and is configured by connecting a plurality of LED elements 41 in series.

  The control circuit 331 controls the operation of the DC / DC converter 334. The control circuit 331 performs feedback control of the power converter 334a using detection results of the voltage detector 334b that detects the lamp voltage V2 and the current detector 334c that detects the output current of the power converter 334a. .

  The control power supply circuit 332 generates the control voltage V3 when the battery voltage V1 is supplied from the ignition power supply E2, and supplies the control voltage V3 to the control circuit 331, whereby the control circuit 331 operates.

  Further, when an abnormality occurs in the lighting circuit unit 33 or the light source 4 that is a load, the control circuit 331 outputs an abnormality notification signal S1 to an external device via the terminal 21d.

  Moreover, as shown in FIG. 3, you may be comprised by 33 A of lighting circuit parts which light the HID lamp 43 instead of an LED unit.

  The lighting circuit unit 33A includes a control circuit 331A, a control power supply circuit 332A, an input filter unit 333A, a DC / DC converter 334A, an output filter unit 335A, and a DC / AC converter 336A.

  At startup, the DC / DC converter 334A converts the battery voltage V1 supplied via the input filter unit 333A to generate a DC voltage V4 of approximately 400V. Then, the DC / DC converter 334A outputs to the igniter unit 42 built in the light source 4A via the resistors R1 to R3, the output coupler 35, and the output harness unit 350.

  The igniter unit 42 generates a high voltage pulse of approximately 30 kV from the DC voltage V4 and applies it to the HID lamp 43, whereby the HID lamp 43 is started.

  When the lighting of the HID lamp 43 starts, the DC / DC converter 334A converts the battery voltage V1, generates a DC voltage V5, and supplies it to the DC / AC converter 336A. The DC / AC converter 336A generates a low frequency voltage V6 of several tens Hz to several hundreds Hz from the DC voltage V5 and supplies the low frequency voltage V6 to the HID lamp 43 via the output filter unit 335A, the output coupler 35, and the output harness unit 350. Thus, the lighting of the HID lamp 43 is maintained.

  The control circuit 331A controls the operation of the DC / DC converter 334A and the DC / AC converter 336A. Further, the control power supply circuit 332A generates the control voltage V3 by being supplied with the battery voltage V1 from the ignition power supply E2, and the control circuit 331A is operated by supplying the control voltage V3 to the control circuit 331A.

  And the circuit element which comprises the lighting circuit part 33 shown in FIG. 2 or the lighting circuit part 33A shown in FIG. 3 is mounted on the surface of the mounting substrate 3. The mounting substrate 3 is formed with four through holes 34 into which one ends of the four terminals 21 of the input / output coupler 2 are inserted in a state where the input / output coupler 2 is attached to the case body 11. When the four through holes 34 are individually identified, they are referred to as through holes 34a, 34b, 34c, and 34d.

  As shown in FIGS. 4A to 4C, the input / output coupler 2 includes a substantially elliptical cylindrical portion 22, four terminals 21 inserted through the cylindrical portion 22, and a peripheral portion of the cylindrical portion 22. It is comprised with the formed collar part 23. FIG.

  The four terminals 21 are arranged in the order of the terminals 21a, 21b, 21c, and 21d in the major axis direction of the cylindrical portion 22 (the Y direction in FIG. 4A).

  One end side of the cylindrical portion 22 is inserted through the opening 111 of the case body 11 and is positioned by one surface of the flange portion 23 coming into contact with the case body 11.

  The flange portion 23 is formed with a pair of insertion holes 231 through which screws 112 are inserted at both ends in the major axis direction. Then, the input / output coupler 2 is fixed to the case body 11 by inserting the screw 112 into the insertion hole 231 from the other surface side of the flange 23 and screwing it into the screw hole 113 formed in the case body 11.

In the input / output coupler 2, the other end side of the cylindrical portion 22 is fitted to an input / output connector (not shown), so that the terminals 21 a to 21 d are connected to the battery power source E 1, the ignition power source E 2, and an external device. A pair of guides 221 protrudes from both ends in the major axis direction of the cylindrical portion 22, and when the guides 221 are fitted into guide grooves formed in the input / output connectors when fitted to the input / output connectors. Positioning each other. Further, the cylindrical portion 22, the engaging claw 222 is formed, by the locking claw 222 is engaged with the engaging hole formed to the input and output connectors, the input-output coupler 2 O connector Are locked together.

  The terminal 21 includes a first shaft portion 211 that is inserted from one end of the cylindrical portion 22 to the other end, and second to fourth shaft portions 212 to 214. The second to fourth shaft portions 212 to 214 are formed in a substantially U shape, the second shaft portion 212 and the fourth shaft portion 214 are formed substantially in parallel, and the third shaft portion 213 is The end portions of the second shaft portion 212 and the fourth shaft portion 214 are connected to each other. The second shaft portion 212 is formed in a substantially right angle direction from one end of the first shaft portion 211, and the third shaft portion 213 is formed in a substantially right angle direction from one end of the second shaft portion 212. The shaft portion 214 is formed in a substantially right angle direction from one end of the third shaft portion 213. Then, the tip end of the fourth shaft portion 214 is inserted into the through hole 34 from the back surface side (one surface side) of the mounting substrate 3, and on the front surface side (other surface side) of the mounting substrate 3 using an automatic soldering robot. Soldering is performed (see FIG. 13). Thereby, the terminal 21 is mounted on the mounting substrate 3 and is electrically connected. Hereinafter, the tip of the fourth shaft portion 214 is referred to as the tip of the terminal 21.

  For example, when this automatic soldering robot performs soldering, it is assumed that a dead space of 5 mm is necessary in the opening / closing direction of the soldering iron 201 around the portion to be soldered. When the soldering iron 201 opens and closes in the Y direction when the terminals 21 are mounted, if the positions of the through holes 34a to 34d are formed in a single row as in the prior art, the distance between the through holes 34 is 5 mm or more. There is a need to. That is, the mounting length of the terminal 21 of the input / output coupler 2 (distance from the through hole 34a to the through hole 34d) is required to be at least 15 mm, and the occupied area increases. Therefore, in the present embodiment, the terminal 21 and the through hole 34 are formed as follows.

  The four terminals 21 of this embodiment are arranged side by side in the order of the terminals 21a, 21b, 21c, 21d in the Y direction, and the third shaft portion 213 of the terminals 21a, 21c is the terminals 21b, 21d. The third shaft portion 213 is longer than the third shaft portion 213. Therefore, the position of the tip of the terminal 21 is formed to be staggered along the Y direction.

  In addition, the through holes 34a to 34d of the present embodiment include an outer through hole near the outer peripheral edge of the mounting substrate 3 along the outer peripheral edge of the mounting substrate 3, and an inner side farther from the outer peripheral edge of the mounting substrate 3 than the outer through hole. It is formed in a zigzag pattern that repeats through holes alternately. As shown in FIGS. 5 and 6A, the through holes 34a and 34c constitute inner through holes, and the through holes 34b and 34d constitute outer through holes.

  Thus, the positions of the tips of the terminals 21a to 21d and the through holes 34a to 34d are formed in a staggered manner, and the tips of the terminals 21a to 21d are inserted into the through holes 34a to 34d.

  By arranging the through holes 34 in a staggered manner, the distance L2 in the Y direction between the inner through holes 34a and 34c adjacent to each other in the Y direction and the distance between the outer through holes 34b and 34d is made twice the distance L1 between the terminals 21. can do. Therefore, when the dead space in the Y direction necessary for soldering using the automatic soldering robot is 5 mm, the distance L2 may be 5 mm. That is, since the distance L1 (= 1 / L2) between the terminals 21 can be 2.5 mm, the mounting length of the terminals 21 in the Y direction can be 7.5 mm. Therefore, the mounting length of the terminal 21 in the Y direction can be halved and the mounting space of the input / output coupler 2 can be reduced as compared with the conventional case where the through holes 34 are arranged in a line. Therefore, the mounting substrate 3 can be reduced, and the lighting device 1 can be reduced in size.

  In addition, by forming the through holes 34 in a staggered manner, the occurrence of solder bridges can be suppressed.

  In the present embodiment, as shown in FIG. 6A, the through holes 34a and 34c constitute an inner through hole, and the through holes 34b and 34d constitute an outer through hole. However, the present invention is not limited to the above. For example, as shown in FIG. 6B, four through holes 34A to 34D are arranged in a staggered manner in the Y direction, the through holes 34B and 34D constitute the inner through holes, and the through holes 34A and 34C are the outer through holes. The same effect as described above can be obtained by forming a hole.

  Further, the number of the terminals 21 and the through holes 34 of the input / output coupler 2 is not limited to four, and may be five or more according to the configuration of the lighting circuit unit 33. For example, as shown in FIG. 6C, six through holes 34a to 34f are formed in a staggered pattern in the Y direction, the through holes 34a, 34c, and 34e constitute inner through holes, and the through holes 34b, 34d, 34f may constitute an outer through hole. Further, as shown in FIG. 6 (d), six through holes 34A to 34F are formed in a staggered pattern in the Y direction, and the through holes 34B, 34D, and 34F constitute inner through holes, and the through holes 34A, 34C, 34E may constitute an outer through hole.

  When the terminal 21 of the input / output coupler 2 is connected to the through hole 34 shown in FIGS. 6B to 6D, the input / output coupler 2 having a terminal configuration corresponding to the position configuration of each through hole 34 is provided. It is necessary to use it. That is, the input / output coupler 2 formed so that the length of the third shaft portion 213 of the terminal 21 inserted through the inner through hole 34 is longer than the length of the third shaft portion 213 of the terminal 21 inserted through the outer through hole 34. Use.

(Embodiment 2)
The position configuration of the through hole 34 of the mounting board 3 of the lighting device 1 of the present embodiment is arranged as shown in FIG. 6A, and the lighting circuit unit 33 shown in FIG. ing. The present embodiment is characterized in that the positive and negative electrodes of the battery power supply E1 are connected to the terminals 21a and 21c inserted into the inner through holes 34a and 34c. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and description is abbreviate | omitted.

  The lighting device 1 of this embodiment is used for a vehicle such as an automobile. Since various surges and noises occur in devices mounted on vehicles, it is necessary to make them less susceptible to the effects of surges and noises.

  The positive high-voltage pulse generated in the vehicle as a surge is a sum of a high-frequency pulse (ignition noise) and a giant pulse (positive surge), and the giant pulse is generated when the load on the alternator is suddenly reduced.

  For example, as shown in FIG. 7, a peak voltage Vp (= 70 V) is applied to the input power supply terminal in the A-1 surge of JASO standard (Japan Automobile Manufacturers Association standard). Further, as shown in FIGS. 8A to 8D, pulses such as a transient voltage generated by disconnecting the power source from the inductive load and a transient voltage generated from the switching process are also applied.

  Further, noise includes common mode interference noise induced in the harness, and there is a BCI (= Bulk Current Injection) test as a strength test against the noise. In this BCI test, common mode noise is applied from an input power supply to confirm that the device does not malfunction. Even in this test, there are various specifications by each manufacturer. For example, the frequency of noise to be applied is as wide as 1 to 2000 MHz, and the noise current is 200 mA. There is also a test for irradiating an electromagnetic field, and there is also a test for confirming that a malfunction does not occur with a strong magnetic field of 200 V / m.

  The strength against such surge and noise is affected by the terminal arrangement of the input / output coupler 2, and if the terminal arrangement is inappropriate, noise may be applied to the signal output terminal and malfunction may occur. In addition, since the terminal connected to the battery power source E1 is greatly affected by radiation and conduction noise, it is necessary to consider the influence on other terminals.

  Therefore, the terminal configuration of the input / output coupler 2 of this embodiment will be described.

  In the present embodiment, the terminal 21a is connected to the negative electrode of the battery power supply E1 and the ignition power supply E2, the terminal 21b is connected to the positive electrode of the ignition power supply E2, the terminal 21c is connected to the positive electrode of the battery power supply E1, and the terminal 21d is connected to an external device. Therefore, in the present embodiment, the terminal 21a corresponds to the ground terminal, the terminal 21b corresponds to the second power supply terminal, the terminal 21c corresponds to the first power supply terminal, and the terminal 21d corresponds to the signal output terminal.

  Connected to the inner through holes 34a and 34c are terminals 21a and 21c to which a battery power supply E1 connected to a DC / DC converter 334, which has a larger power capacity than the ignition power supply E2 and generates large noise, is connected. Therefore, as shown in FIG. 9, the wiring length between the terminals 21a and 21c (through holes 34a and 34c) and the DC / DC converter 334 can be shortened, and the influence of radiation noise and injection noise can be reduced. . FIG. 9 shows a switching element Q1, a transformer T1, a capacitor C1, and a diode D1, which are main components of the DC / DC converter 334. 9 shows a smoothing capacitor C2 that is a main component of the input filter section 333 and a smoothing capacitor C3 that is a main component of the input filter of the ignition power supply E2.

  Furthermore, since the terminals 21a and 21c are connected to the inner through-holes 34a and 34c, the ceramic capacitors constituting the input filter portion 333 can be easily disposed near the terminals 21a and 21c, and the noise cut effect is improved.

  Moreover, if the battery power supply E1 is connected to the terminals 21a and 21c inserted into the inner through holes 34a and 34c, the above-described effect can be obtained. Therefore, the positive electrode of the battery power supply E1 may be connected to the terminal 21a, and the battery power supply E1 and the ignition power supply E2 may be connected to the terminal 21c.

  In addition, when the four through holes 34A to 34D are arranged as shown in FIG. 6B, the above effect can be obtained by connecting the terminals connected to the battery power supply E1 to the inner through holes 34B and 34D. Can be obtained.

  Further, as shown in FIG. 6C, when six through holes 34a to 34f are arranged, a terminal connected to the battery power supply E1 is connected to any one of the inner through holes 34a, 34c, and 34e. Thus, the above effect can be obtained. Similarly, as shown in FIG. 6D, when six through holes 34A to 34F are formed, a terminal connected to the battery power supply E1 is connected to any one of the inner through holes 34B, 34D, and 34F. By doing so, the above effect can be obtained.

  As shown in FIG. 5, an insertion hole 36 is formed in the vicinity of the terminal 21 of the input / output coupler 2 in the mounting substrate 3, and a frame GND 37 is formed at the periphery of the insertion hole 36. Then, a screw (not shown) made of a metal material is fixed to the case body 11 made of metal through the insertion hole 36. As a result, the screw head and the frame GND 37 come into contact with each other, the frame GND 37 of the mounting substrate 3 and the case body 11 are electrically connected via the screw, and noise can be further reduced. Note that the method of electrically connecting the frame GND 37 and the case body 11 is not limited to the above, and a spring or the like formed of a metal material may be used.

(Embodiment 3)
The position configuration of the through hole 34 of the mounting substrate 3 of the lighting device 1 of the present embodiment is arranged as shown in FIG. The present embodiment is characterized in that the positive electrode of the ignition power supply E2 is connected to the terminal 21b inserted into the outer through hole 34b, and an external device is connected to the terminal 21d inserted into the outer through hole 34d. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and description is abbreviate | omitted.

  In the present embodiment, the terminal 21a is connected to the negative electrode of the battery power supply E1 and the ignition power supply E2, the terminal 21b is connected to the positive electrode of the ignition power supply E2, the terminal 21c is connected to the positive electrode of the battery power supply E1, and the terminal 21d is connected to an external device. Therefore, in the present embodiment, the terminal 21a corresponds to the ground terminal, the terminal 21b corresponds to the second power supply terminal, the terminal 21c corresponds to the first power supply terminal, and the terminal 21d corresponds to the signal output terminal.

  In the present embodiment, an external device is connected to a terminal 21d that is inserted into the outer through hole 4d that is disposed on one end side in the Y direction of the through holes 34a to 34d. The positive electrode of the ignition power source E2 is connected to a terminal 21b that is inserted into the outer through hole 34b disposed between the inner through holes 34a and 34c.

  In the present embodiment as well, as in the second embodiment, the battery power source E1 is connected to the inner through holes 34a and 34c, so that the effects of the second embodiment can be obtained.

  Furthermore, in this embodiment, the terminal 21b to which the positive electrode of the ignition power supply E2 is connected and the terminal 21d to be connected to an external device are connected to the outer through holes 34b and 34d. The terminals 21a and 21c to which the battery power supply E1 is connected are connected to the inner through holes 34a and 34c. That is, by connecting the terminals 21a and 21c where large noise is generated to the inner through holes 34a and 34c, the terminals 21b and 21d connected to the outer through holes 34b and 34d are noises as shown in FIGS. And can be made less susceptible to surges.

  In addition, by connecting the terminal 21d that outputs the abnormality notification signal S1 that is easily affected by noise or the like to the outer through hole 34d formed on one end side in the Y direction, the influence of noise or the like by the other terminals 21a to 21c. Can be further suppressed.

  Also, as shown in FIG. 12, the power supply pattern 38 to which the inner through-hole 34c is connected on the mounting substrate 3 is moved away from the vicinity of the outer through-hole 34d, so that the terminal 21d to which an external device is connected further has noise or the like Can be less affected by

  The terminal connected to the external device may be connected to an outer through hole arranged on the other end side in the Y direction. For example, when four through holes 34A to 34D are formed as shown in FIG. 6B, the terminals (first power source) to which the positive and negative electrodes of the battery power source E1 are connected to the inner through holes 34B and 34D. Terminal / ground terminal). Then, a terminal (signal output terminal) to which an external device is connected is connected to the outer through hole 34A disposed on the other end side in the Y direction. In addition, a terminal (second power supply terminal) connected to the positive electrode of the ignition power supply E2 is connected to the outer through hole 34C disposed between the inner through holes 34B and 34D.

  Further, as shown in FIG. 6C, when the six through holes 34a to 34f are formed, the positive electrode / negative electrode of the battery power supply E1 is connected to one of the inner through holes 34a, 34c, 34e. Connect terminals (first power supply terminal / ground terminal). Then, a terminal (signal output terminal) to which an external device is connected is connected to the outer through hole 34f disposed on one end side in the Y direction. Further, a terminal (second power supply terminal) connected to the positive electrode of the ignition power supply E2 is connected to one of the outer through holes 34b and 34d. Thereby, the same effect as described above can be obtained.

  Similarly, as shown in FIG. 6D, when the six through holes 34A to 34F are formed, the positive electrode / negative electrode of the battery power supply E1 is connected to one of the inner through holes 34B, 34D, and 34F. Terminal (first power supply terminal / ground terminal). Then, a terminal (signal output terminal) to which an external device is connected is connected to the outer through hole 34A disposed on the other end side in the Y direction. Further, a terminal (second power supply terminal) connected to the positive electrode of the ignition power supply E2 is connected to one of the outer through holes 34C and 34E. Thereby, the same effect as described above can be obtained.

(Embodiment 4)
The position configuration of the through hole 34 of the mounting substrate 3 of the lighting device 1 of the present embodiment is arranged as shown in FIG. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and description is abbreviate | omitted.

  In the present embodiment, a positive electrode of the battery power supply E1 is connected to the terminal 21a, a positive electrode of the ignition power supply E2 is connected to the terminal 21b, a negative electrode of the battery power supply E1 and the ignition power supply E2 is connected to the terminal 21c, and an external device is connected to the terminal 21d. Therefore, in this embodiment, the terminal 21a corresponds to the first power supply terminal, the terminal 21b corresponds to the second power supply terminal, the terminal 21c corresponds to the ground terminal, and the terminal 21d corresponds to the other terminal (signal output terminal). ).

  In the present embodiment as well, as in the second embodiment, since the battery power supply E1 is connected to the inner through holes 34a and 34c, the same effect as in the second embodiment can be obtained. Similarly to the third embodiment, the external device is connected to the outer through hole 34d disposed at one end in the Y direction, and the positive electrode of the ignition power supply E2 is connected to the outer through hole 34b. The effect of can be obtained.

  In the input / output coupler 2 of the present embodiment, a terminal 21a to which the positive electrode of the battery power supply E1 is connected, a terminal 21b to which the positive electrode of the ignition power supply E2 is connected, and the negative electrodes of the battery power supply E1 and the ignition power supply E2 are connected in the Y direction. Terminals 21c are provided in this order. That is, the positive electrode of the ignition power supply E2 is connected to the terminal 21b provided between the terminals 21a and 21c to which the battery power supply E1 is connected.

  Further, as shown in FIG. 11, a GND pattern 39 connected to the through hole 34c on the mounting substrate 3 is formed in the vicinity of the through hole 34b. The GND pattern 39 includes an arc-shaped pattern (wiring) surrounding a part of the through hole 34b. Note that the mounting substrate 3 may be formed of a laminated substrate, and the GND pattern 39 may be formed on the entire periphery of the through hole 34b.

Thus, the through hole 34c to which the negative electrode of the battery power supply E1 is connected and the through hole 34b to which the positive electrode of the ignition power supply E2 is connected are disposed adjacent to each other, and the GND pattern 39 is formed in the vicinity of the through hole 34b. Thereby, the terminal 21b connected to the through hole 34b can be made less susceptible to noise and the like.

  Further, a through hole 34d through which other terminals (terminal 21d in the present embodiment) excluding the terminals 21a to 21c are disposed is disposed at one end side in the Y direction of the through hole 34c. Therefore, since the through hole 34d is moved away from the through hole 34a to which the positive electrode of the battery power supply E1 is connected and close to the through hole 34c to which the negative electrode of the battery power supply E1 is connected, the terminal 21d is affected by noise. Can be difficult.

  Further, as shown in FIG. 5, the through-hole 34c is connected to the frame GND 37 of the mounting board 3, and the GND potential is stabilized by electrically connecting the frame GND 37, the case body 11, and a metal screw or the like. In addition, the influence of noise can be suppressed.

  Further, it is only necessary to form a through hole 34 that is connected in order of the positive electrode of the battery power supply E1, the positive electrode of the ignition power supply E2, the negative electrode of the battery power supply E1 and the ignition power supply E2, and the external device. For example, when four through holes 34A to 34D are formed as shown in FIG. A terminal (first power supply terminal) to which the positive electrode of the battery power supply E1 is connected is connected to the inner through hole 34D. A terminal (second power supply terminal) to which the positive electrode of the ignition power supply E2 is connected is connected to the outer through hole 34C. A terminal (ground terminal) connected to the negative electrodes of the battery power supply E1 and the ignition power supply E2 is connected to the inner through hole 34B. A terminal (other terminal) to which an external device is connected is connected to the outer through hole 34A. Thereby, the same effect as described above can be obtained.

  Further, as shown in FIG. 6C, when six through holes 34a to 34f are formed, the following configuration is provided. A terminal (first power supply terminal) to which the positive electrode of the battery power supply E1 is connected is connected to the inner through hole 34a. A terminal (second power supply terminal) to which the positive electrode of the ignition power supply E2 is connected is connected to the outer through hole 34b. A terminal (ground terminal) connected to the negative electrodes of the battery power supply E1 and the ignition power supply E2 is connected to the inner through hole 34c. A terminal (signal output terminal) to which an external device is connected is connected to the outer through hole 34f. Further, other terminals to which a power source, a signal line and the like having a smaller power source capacity than the battery power source E1 are connected are connected to the outer through hole 34d and the inner through hole 34e. Thereby, a terminal connected to the positive electrode of the ignition power supply E2, a terminal connected to an external device, and other terminals can be made less susceptible to noise.

  Or as shown in FIG.6 (c), when the six through holes 34a-34f are formed, you may comprise as follows. A terminal (first power supply terminal) to which the positive electrode of the battery power supply E1 is connected is connected to the inner through hole 34e. A terminal (second power supply terminal) to which the positive electrode of the ignition power supply E2 is connected is connected to the outer through hole 34d. A terminal (ground terminal) connected to the negative electrodes of the battery power supply E1 and the ignition power supply E2 is connected to the inner through hole 34c. A terminal (signal output terminal) to which an external device is connected is connected to the outer through hole 34f. In addition, other terminals to which a power source, a signal line and the like having a power source capacity smaller than that of the battery power source E1 are connected are connected to the inner through hole 34a and the outer through hole 34b. Thereby, the terminal connected to the positive electrode of the ignition power supply E2 and other terminals can be made less susceptible to noise.

  Similarly, as shown in FIG. 6D, when the six through holes 34A to 34F are formed, the following configuration is made. A terminal (first power supply terminal) to which the positive electrode of the battery power supply E1 is connected is connected to the inner through hole 34F. A terminal (second power supply terminal) to which the positive electrode of the ignition power supply E2 is connected is connected to the outer through hole 34E. A terminal (ground terminal) connected to the negative electrodes of the battery power supply E1 and the ignition power supply E2 is connected to the inner through hole 34D. A terminal (signal output terminal) to which an external device is connected is connected to the outer through hole 34A. In addition, other terminals to which a power source, a signal line and the like having a power source capacity smaller than that of the battery power source E1 are connected are connected to the inner through hole 34B and the outer through hole 34C. Thereby, a terminal connected to the positive electrode of the ignition power supply E2, a terminal connected to an external device, and other terminals can be made less susceptible to noise.

  Or as shown in FIG.6 (d), when the six through holes 34A-34F are formed, you may comprise as follows. A terminal (first power supply terminal) to which the positive electrode of the battery power supply E1 is connected is connected to the inner through hole 34D. A terminal (second power supply terminal) to which the positive electrode of the ignition power supply E2 is connected is connected to the outer through hole 34C. A terminal (ground terminal) connected to the negative electrodes of the battery power supply E1 and the ignition power supply E2 is connected to the inner through hole 34B. A terminal (signal output terminal) to which an external device is connected is connected to the outer through hole 34A. In addition, other terminals to which a power source, a signal line and the like having a power source capacity smaller than the battery power source E1 are connected are connected to the outer through hole 34E and the inner through hole 34F. Thereby, the terminal connected to the positive electrode of the ignition power supply E2 and other terminals can be made less susceptible to noise.

DESCRIPTION OF SYMBOLS 1 Lighting device 2 Input / output coupler 3 Mounting board 11 Case body 12 Flange 13 Waterproof sealing material 21a-21d Terminal 33 Lighting circuit part 34a-34d Through-hole 35 Output coupler

Claims (3)

An input / output coupler which is used for connection of at least an external power supply and which has at least four terminals arranged in parallel;
An output coupler used to connect to the headlamp;
The input / output coupler is mounted, and power supplied from the external power source is converted through the input / output coupler to generate lamp power, and the lamp power is supplied to the headlamp through the output coupler. A mounting substrate that constitutes the lighting circuit section,
The mounting board has a through hole through which one end of the terminal is inserted,
One end of the terminal is inserted through the through-hole from one side of the mounting board toward the other side and soldered on the other side of the mounting board.
The through-hole alternately alternates between an outer through hole close to the outer peripheral edge of the mounting substrate and an inner through hole farther from the outer peripheral edge of the mounting substrate than the outer through hole along the outer peripheral edge of the mounting substrate. It is formed to be a staggered pattern that repeats ,
The external power source includes a first DC power source and one or more second DC power sources having a power source capacity smaller than that of the first DC power source,
The four or more terminals include a first power supply terminal to which the high voltage side of the first DC power supply is connected, and a ground terminal to which the low voltage side of the first DC power supply is connected,
The first power supply terminal and the ground terminal are inserted through the inner through hole,
The mounting board is housed in a metal case,
A metal material for electrically connecting the frame ground of the mounting substrate and the case;
An in-vehicle headlamp lighting device characterized by the above.   An input / output coupler which is used for connection of at least an external power supply and which has at least four terminals arranged in parallel;
  An output coupler used to connect to the headlamp;
  The input / output coupler is mounted, and power supplied from the external power source is converted through the input / output coupler to generate lamp power, and the lamp power is supplied to the headlamp through the output coupler. A mounting substrate that constitutes the lighting circuit section,
  The mounting board has a through hole through which one end of the terminal is inserted,
  One end of the terminal is inserted through the through-hole from one side of the mounting board toward the other side and soldered on the other side of the mounting board.
  The through-hole alternately alternates between an outer through hole close to the outer peripheral edge of the mounting substrate and an inner through hole farther from the outer peripheral edge of the mounting substrate than the outer through hole along the outer peripheral edge of the mounting substrate. It is formed to be a staggered pattern that repeats,
  The external power source includes a first DC power source and one or more second DC power sources having a power source capacity smaller than that of the first DC power source,
  The four or more terminals are connected to a first power supply terminal to which a high voltage side of the first DC power supply is connected, and to a second power supply to which a high voltage side of each of the one or more second DC power supplies is connected. A power terminal, a ground terminal to which a low voltage side of the first power terminal and the second power terminal is connected, and a signal output terminal for outputting a signal to an external device,
  The second power supply terminal is inserted through the outer through hole,
  The signal output terminal is inserted through an outer through hole located at one end of the terminals in the juxtaposition direction.
  An in-vehicle headlamp lighting device characterized by the above.   An input / output coupler which is used for connection of at least an external power supply and which has at least four terminals arranged in parallel;
  An output coupler used to connect to the headlamp;
  The input / output coupler is mounted, and power supplied from the external power source is converted through the input / output coupler to generate lamp power, and the lamp power is supplied to the headlamp through the output coupler. A mounting substrate that constitutes the lighting circuit section,
  The mounting board has a through hole through which one end of the terminal is inserted,
  One end of the terminal is inserted through the through-hole from one side of the mounting board toward the other side and soldered on the other side of the mounting board.
  The through-hole alternately alternates between an outer through hole close to the outer peripheral edge of the mounting substrate and an inner through hole farther from the outer peripheral edge of the mounting substrate than the outer through hole along the outer peripheral edge of the mounting substrate. It is formed to be a staggered pattern that repeats,
  The external power source includes a first DC power source and one or more second DC power sources having a power source capacity smaller than that of the first DC power source,
  The four or more terminals are connected to a first power supply terminal to which a high voltage side of the first DC power supply is connected, and to a second power supply to which a high voltage side of each of the one or more second DC power supplies is connected. Power supply terminals, a ground terminal to which the low-voltage side of the first DC power supply is connected, and other terminals,
  In the juxtaposed direction of the terminals, through holes through which the respective terminals are inserted are formed in the order of the first power supply terminal, the second power supply terminal, the ground terminal, and the other terminals,
  A ground pattern electrically connected to the ground terminal is formed in the vicinity of the through hole through which the second power supply terminal is inserted.
  An in-vehicle headlamp lighting device characterized by the above.

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