JP5407025B2 - Light source unit of semiconductor light source for vehicle lamp, vehicle lamp - Google Patents

Description

  The present invention relates to a light source unit of a semiconductor-type light source for a vehicle lamp. The present invention also relates to a vehicular lamp using a semiconductor-type light source as a light source.

  This type of light source unit is conventionally known (for example, Patent Document 1). Hereinafter, a conventional light source unit will be described. A conventional light source unit includes an LED bare chip mounted on a lead frame, and a pair of terminals are pulled out from the lead frame to form a light emitting unit, and the light emitting unit is assembled into a holder, a base, and a base. .

  In such a light source unit, it is important to reliably connect a pair of terminals for supplying power to the LED bare chip and the lead frame.

JP-A-2-205080

  The problem to be solved by the present invention is that, in the light source unit, it is important to reliably electrically and mechanically connect a pair of terminals for supplying power to the LED bare chip and the lead frame. .

  The present invention (invention according to claim 1) includes a light source unit, a socket unit to which the light source unit is attached, and a connection member that electrically connects the light source unit and the socket unit, and the light source unit includes: A board, a light emitting chip of a semiconductor light source mounted on the board, and a wiring element that is provided on the board and feeds power to the light emitting chip, and the socket part is provided with an attachment part for attaching to the vehicle lamp An insulating member, a heat radiating member that radiates heat generated in the light source unit to the outside, and a power feeding member that feeds power to the light source unit, and the heat radiating member and the power feeding member are incorporated into the insulating member in an insulated state. A light source connection portion electrically and mechanically connected to the wiring element of the light source portion, and a socket connection portion electrically and mechanically connected to the power supply member of the socket portion. And that To.

  In the present invention (the invention according to claim 2), the socket connecting portion is provided with an insertion hole into which the power feeding member is inserted and a guide for guiding the power feeding member into the insertion hole. It is characterized by that.

  Further, according to the present invention (the invention according to claim 3), the electrical and mechanical connection between the socket connecting portion and the power feeding member is composed of at least one connecting means of caulking, elastic contact, and welding. It is characterized by.

  Furthermore, the present invention (the invention according to claim 4) is characterized in that the light source connection portion and the substrate are provided with a fitting protrusion and a fitting hole which are positioned and fitted to each other. To do.

  Furthermore, this invention (invention according to claim 5) is characterized in that the electrical and mechanical connection between the light source connecting portion and the wiring element is made of a conductive adhesive.

  Furthermore, in the present invention (the invention according to claim 6), a heat conductive medium is applied between the substrate and the heat radiating member, and the heat conductive medium electrically connects the socket connecting portion and the power supply member. When the substrate is mechanically and mechanically connected, the substrate is attached and fixed under pressure to pressurize the substrate toward the heat radiating member.

  Furthermore, in the present invention (the invention according to claim 7), the board is provided with an insertion hole through which the power feeding member is inserted, and the inner circumferential surface of the insertion hole of the board and the outer circumferential surface of the insertion end portion of the power feeding member. Are each provided with an inclined surface which is inclined with respect to the insertion direction.

  Furthermore, the present invention (the invention according to claim 8) is a vehicle according to any one of claims 1 to 7, which is disposed in the lamp chamber, and a lamp housing and a lamp lens that define the lamp chamber. And a light source unit of a semiconductor-type light source for a lamp.

  In the light source unit of the semiconductor light source of the vehicle lamp of the present invention (the invention according to claim 1), the light source connection portion of the connection member is electrically and mechanically connected to the wiring element of the light source portion, and The socket connection part of the connection member is electrically and mechanically connected to the power supply member of the socket part. As a result, the light source unit of the semiconductor-type light source of the vehicular lamp according to the present invention (the invention according to claim 1) has the wiring element of the light source section and the power supply member of the socket section via the light source connection section and the socket connection section of the connection member. Can be reliably connected electrically and mechanically.

  In the light source unit of the semiconductor light source of the vehicle lamp according to the present invention (the invention according to claim 2), the power supply member can be reliably inserted into the insertion hole of the socket connecting portion by the guide of the socket connecting portion. . As a result, the light source unit of the semiconductor-type light source for the vehicular lamp according to the present invention (the invention according to claim 2) is configured such that even if the insertion position of the insertion hole of the socket connection portion and the feeding member are slightly displaced, the displacement is socketed. It can be absorbed by the guide of the connecting part. Thereby, since the light source unit of the semiconductor type light source of the vehicular lamp according to the present invention (the invention according to claim 2) can securely insert the power supply member into the insertion hole of the socket connection portion, the socket connection of the connection member And the power supply member of the socket part can be more reliably electrically and mechanically connected.

  Furthermore, in the light source unit of the semiconductor type light source of the vehicular lamp according to the present invention (invention according to claim 3), the socket connecting portion and the power supply member are at least one connecting means of caulking, elastic contact, and welding. Are electrically and mechanically connected. As a result, the light source unit of the semiconductor-type light source for the vehicular lamp according to the present invention (the invention according to claim 3) further reliably and electrically and mechanically connects the socket connection portion of the connection member and the power supply member of the socket portion. Can be connected.

  Furthermore, the light source unit of the semiconductor light source of the vehicle lamp according to the present invention (the invention according to claim 4) positions the light source connecting portion and the substrate relative to each other by fitting the fitting protrusion into the fitting hole. can do. As a result, the light source unit of the semiconductor-type light source for the vehicular lamp according to the present invention (the invention according to claim 4) more reliably electrically and mechanically connects the light source connection portion of the connection member and the substrate of the light source portion. can do.

  Moreover, the light source unit of the semiconductor-type light source of the vehicle lamp according to the present invention (the invention according to claim 4) is configured such that the fitting protrusion is fitted into the fitting hole, whereby the light source connecting portion of the connecting member and the substrate of the light source portion. In addition, the fitting protrusion is fitted into the fitting hole and then bent and applied to the edge of the fitting hole, so that the light source connecting portion of the connecting member and the light source portion The substrate can be mechanically and reliably connected.

  Furthermore, in the light source unit of the semiconductor type light source of the vehicular lamp according to the present invention (the invention according to claim 5), the light source connection portion and the wiring element are electrically and mechanically connected by a conductive adhesive. Yes. As a result, the light source unit of the semiconductor-type light source of the vehicular lamp according to the present invention (the invention according to claim 5) more reliably electrically and mechanically connects the light source connection portion of the connection member and the substrate of the light source portion. can do.

  Furthermore, in the light source unit of the semiconductor type light source for the vehicular lamp according to the present invention (invention according to claim 6), the heat conductive medium applied between the substrate and the heat radiating member includes the socket connecting portion and the power supply member. Are connected and fixed under pressure to pressurize the substrate toward the heat dissipating member. As a result, the light source unit of the semiconductor-type light source of the vehicular lamp according to the present invention (the invention according to claim 6) reduces the film thickness of the heat conductive medium applied between the substrate and the heat radiating member. And variations in the thickness of the thermally conductive medium applied between the substrate and the heat dissipation member can be absorbed. Thereby, the light source unit of the semiconductor type light source of the vehicle lamp according to the present invention (the invention according to claim 6) reliably connects the substrate and the heat radiating member through the heat conductive medium (in the case of the heat conductive adhesive). Since the light source unit and the socket unit can be firmly fixed to each other, the wiring element of the light source unit and the socket unit can be connected to each other through the light source connection unit and the socket connection unit of the connection member. The power supply member can be more reliably electrically and mechanically connected.

  In addition, the light source unit of the semiconductor type light source for the vehicular lamp according to the present invention (the invention according to claim 6) can securely attach and fix the substrate and the heat radiating member via the heat conductive medium. Can be efficiently radiated to the outside through the substrate, the heat conductive medium, and the heat dissipation member.

  Furthermore, the light source unit of the semiconductor-type light source for the vehicular lamp according to the present invention (the invention according to claim 7) includes an inclined surface of the inner peripheral surface of the insertion hole of the substrate and an inclined surface of the outer peripheral surface of the insertion end portion of the power feeding member. Thus, the insertion end portion of the power feeding member can be smoothly inserted into the insertion hole of the substrate. As a result, the light source unit of the semiconductor-type light source of the vehicular lamp according to the present invention (the invention according to claim 7) is shifted even if the insertion position between the insertion hole of the substrate and the insertion end of the power feeding member is slightly shifted. Can be absorbed by the inclined surface of the inner peripheral surface of the insertion hole of the substrate and the inclined surface of the outer peripheral surface of the insertion end portion of the power supply member. Thereby, the light source unit of the semiconductor-type light source of the vehicle lamp of the present invention (the invention according to claim 7) can determine the relative position between the substrate and the power supply member. As a result, the light source connection portion of the connection member and The wiring element of the light source unit and the power supply member of the socket unit can be more reliably electrically and mechanically connected via the socket connection unit.

  Furthermore, the vehicular lamp according to the present invention (the invention according to claim 8) is a semiconductor for a vehicular lamp according to any one of claims 1 to 7, by means for solving the above problems. The same effect as the light source unit of the mold light source can be achieved.

FIG. 1 shows a first embodiment of a light source unit of a semiconductor-type light source for a vehicle lamp according to the present invention, and is a plan view showing a state in which a light source part, a socket part, and a connecting member are assembled. FIG. 2 is also a longitudinal sectional view (vertical sectional view) showing a state in which the light source unit is assembled to the vehicle lamp, that is, a longitudinal sectional view (vertical sectional view) showing Embodiment 1 of the vehicle lamp according to the present invention. It is. FIG. 3 is also an exploded perspective view of the light source unit of the light source unit, the insulating member, the heat radiating member, and the power supply member of the socket unit. FIG. 4 is an exploded perspective view of the light source unit and the socket part. FIG. 5 is a partially enlarged plan view showing a state where the light source unit, the socket unit, and the connection member are assembled together. 6 is also a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is also an explanatory view showing a connection member. FIG. 8 is also a partial vertical cross-sectional view (vertical cross-sectional view) showing a state before the connection member is assembled to the light source unit. FIG. 9 is also a partial longitudinal sectional view (vertical sectional view) showing a state in which the connecting member is assembled to the light source section. FIG. 10 is a partial longitudinal sectional view (vertical sectional view) showing a state before the light source section and the connection member are assembled to the socket section. FIG. 11 is also a partial vertical cross-sectional view (vertical cross-sectional view) showing a state in which the socket connection portion of the connection member is crimped to the power supply member of the socket portion. FIG. 12 shows a second embodiment of the light source unit of the semiconductor-type light source of the vehicular lamp according to the present invention, and is a partial longitudinal sectional view (vertical sectional view) in a state where the light source part and the connecting member are assembled to the socket part. .

  Hereinafter, two examples of a light source unit of a semiconductor-type light source of a vehicular lamp according to the present invention and an example of a vehicular lamp according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

  1 to 11 show a first embodiment of a light source unit of a semiconductor-type light source of a vehicle lamp according to the present invention and an embodiment of a vehicle lamp according to the present invention. In addition, in the exploded view in FIG. 3 and FIG. 4, illustration of the connection member is omitted.

  Hereinafter, the structure of the light source unit of the semiconductor light source of the vehicular lamp according to the first embodiment and the vehicular lamp according to the present embodiment will be described. In FIG. 2, reference numeral 100 denotes a vehicular lamp in this embodiment.

(Description of vehicle lamp 100)
The vehicle lamp 100 is a one-lamp tail / stop lamp in this example. That is, the vehicular lamp 100 uses a tail lamp function and a stop lamp function together with one lamp (one lamp, one lamp). The vehicle lamps 100 are respectively provided on the left and right of the rear part of a vehicle (not shown). The vehicle lamp 100 may be combined with another lamp function (for example, a backup lamp function) (not shown) to form a rear combination lamp.

  As shown in FIG. 2, the vehicular lamp 100 includes a lamp housing 101, a lamp lens 102, a reflector 103, and a light source unit having a semiconductor light source as a light source, that is, a semiconductor light source of the vehicular lamp according to the first embodiment. The light source unit 1 and a driving circuit (not shown) for the semiconductor light source of the light source unit 1 are provided.

  The lamp housing 101 is made of, for example, a light impermeable member (for example, a resin member). The lamp housing 101 has a hollow shape in which one side is open and the other side is closed. A through hole 104 is provided in the closed portion of the lamp housing 101.

  The lamp lens 102 is made of, for example, a light transmissive member (for example, a transparent resin member or a glass member). The lamp lens 102 has a hollow shape in which one side is open and the other side is closed. The periphery of the opening of the lamp lens 102 and the periphery of the opening of the lamp housing 101 are fixed in a watertight manner. A lamp chamber 105 is defined by the lamp housing 101 and the lamp lens 102.

  The reflector 103 is a light distribution control unit that controls light distribution of the light emitted from the light source unit 1, and has a focal point F. The reflector 103 is disposed in the lamp chamber 105 and is fixed to the lamp housing 101 or the like. The reflector 103 is composed of, for example, a light impermeable member (for example, a resin member or a metal member). The reflector 103 has a hollow shape in which one side is open and the other side is closed. A through hole 106 is provided in the closed portion of the reflector 103 so as to communicate with the through hole 104 of the lamp housing 101. A reflective surface 107 is provided on the inner surface of the reflector 103. The reflector 103 is made of a separate member from the lamp housing 101, but may be a reflector integrated with the lamp housing. In this case, a reflecting surface is provided on a part of the lamp housing to provide a reflector function. The through hole 104 of the lamp housing 101 has a circular shape. A plurality of concave portions (not shown) and a plurality of stopper portions (not shown) are provided at substantially equal intervals on the edge of the through hole 104.

(Description of the light source unit 1)
As shown in FIGS. 1 to 11, the light source unit 1 includes a light source unit 10, a socket unit 11, a cover unit 12, and a connection member 17. The light source unit 10 and the cover unit 12 are attached to one end (upper end) of the socket unit 11. The light source unit 10 is covered by the cover unit 12.

  The light source unit 1 is mounted on the vehicular lamp 100 as shown in FIG. That is, the socket part 11 is detachably attached to the lamp housing 101 via a packing (O-ring) 108. The light source unit 10 and the cover unit 12 are arranged in the lamp chamber 105 through the through hole 104 of the lamp housing 101 and the through hole 106 of the reflector 103 and on the reflecting surface 107 side of the reflector 103. Has been.

(Description of the light source unit 10)
As shown in FIGS. 1, 3 to 6, and 8 to 11, the light source unit 10 includes a substrate 3 and a plurality of light emitting chips 41, 42, 43, and a plurality of semiconductor type light sources in this example. 44, a resistor (not shown) and a diode (not shown) as control elements, and a wiring 6 as a wiring element.

  In this example, the substrate 3 is made of ceramic. As shown in FIGS. 1, 3 to 6, and 8 to 11, the substrate 3 has a substantially octagonal plate shape when viewed from the plane (top). Insertion holes 31, 32, and 33 through which the power supply members 91, 92, and 93 of the socket portion 11 are inserted are provided at substantially the center of the three sides (right side, left side, and lower side) of the substrate 3. A flat mounting surface 34 is provided on one surface (upper surface) of the substrate 3. A flat contact surface 35 is provided on the other surface (lower surface) of the substrate 3. The mounting surface 34 of the substrate 3 is provided with a highly reflective surface 30 such as highly reflective paint or highly reflective vapor deposition. Two fitting holes 37 are provided on both sides of the insertion holes 31 to 33 of the substrate 3. The insertion holes 31 to 33 may be notches. In this case, the two fitting holes 37 are provided on both sides of the notch.

  The four light emitting chips 41 to 44, the resistor, the diode, the wiring 6, and the connection member 17 are attached to the attachment surface 34 of the substrate 3 (that is, mounting, printing, firing, vapor deposition). Etc.). In order to simplify the drawing, the resistor and the diode are not shown, and the wiring 6 is not shown in FIGS. 1 and 3 to 5. Further, in FIGS. The connection member 17 is not shown.

  The semiconductor-type light source composed of the four light-emitting chips 41 to 44 uses a self-luminous semiconductor-type light source (LED in this embodiment 1) such as LED and EL (organic EL). As shown in FIGS. 1, 3, and 4, the light emitting chips 41 to 44 are formed of a semiconductor chip (light source chip) having a small rectangular (square or rectangular) shape when viewed from above (in the top view). It consists of a bare chip. As shown in FIG. 1, the four light emitting chips 41 to 44 are arranged near the focal point F of the reflector 103 of the optical system and the center (mounting rotation center) O of the socket portion 11 of the light source unit 1. The light source bulb (bulb) filaments or the discharge bulbs (HID lamps) are arranged in rows so as to be substantially the same as the light emission by arc discharge. The four light emitting chips 41 to 44 are connected in series in the forward direction.

  The four light emitting chips 41 to 44 are a part of light emitting chips 43 and 44 having a tail lamp function (two in this example), and all light emitting chips 41 to 44 having a stop lamp function (four in this example). , Grouped into Of the four light emitting chips 41 to 44 arranged in one row, two light emitting chips 43 and 44 are used for the tail lamp function and the stop lamp function. Of the four light emitting chips 41 to 44 arranged in one row, the two light emitting chips 41 and 42 at both ends (both outside) are used only for the stop lamp function. The two light emitting chips 43 and 44 of the tail lamp function (hereinafter simply referred to as “tail lamp function”) also used as the stop lamp function are arranged between the two light emitting chips 41 and 42 having only the stop lamp function. Has been.

  The resistance is made of, for example, a thin film resistor or a thick film resistor. The resistor is an adjustment resistor for obtaining a predetermined drive current value. That is, due to the variation in Vf (forward voltage characteristics) of the light emitting chips 41 to 44, the value of the drive current supplied to the light emitting chips 41 to 44 changes, and the brightness (light flux) of the light emitting chips 41 to 44 changes. Variation occurs in brightness and illuminance. For this purpose, by adjusting (trimming) the value of the resistor and setting the value of the drive current supplied to the light-emitting chips 41 to 44 to a predetermined value, the value of the light-emitting chips 41 to 44 is substantially constant. Variations in brightness (light flux, luminous intensity, illuminance) can be adjusted (absorbed). In the trimming, for example, a part of the resistor is cut out with a laser to adjust the resistance value. Note that the resistance value increases by trimming.

  The resistor connected in series to the two light emitting chips 43 and 44 having the tail lamp function and the resistor connected in series to the four light emitting chips 41 to 44 having the stop lamp function are, for example, Although one each is arranged, a plurality may be arranged depending on the capacitance of the resistor and the variable width of the resistor to be adjusted. For example, there may be two, or three resistors for the tail lamp function and four resistors for the stop lamp function.

  The diode is composed of, for example, a bare chip diode or an SMD diode. The two light emitting chips 43 and 44 having the tail lamp function and a diode connected in series with the resistor, and the four light emitting chips 41 to 44 having the stop lamp function and the resistor are connected in series. The diode is a diode having a reverse connection prevention function and a pulse noise protection function from the reverse direction.

  The wiring 6 is made of, for example, a thin film wiring or thick film wiring of a conductive member or a wire (gold wire). The wiring 6 supplies power to the light emitting chips 41 to 44 through the resistor and the diode.

(Description of socket part 11)
As shown in FIGS. 1 to 6 and 8 to 11, the socket portion 11 includes an insulating member 7, a heat radiating member 8, and three power feeding members 91, 92, and 93. The heat radiating member 8 having thermal conductivity and conductivity and the power feeding members 91 to 93 having conductivity are integrally incorporated in the insulating member 7 having insulation properties in an insulated state.

  The socket portion 11 has an integral structure of the insulating member 7, the heat radiating member 8, and the power feeding members 91 to 93. For example, a structure in which the insulating member 7, the heat radiating member 8, and the power feeding members 91 to 93 are integrally formed by insert molding (integrated molding). Alternatively, the insulating member 7 and the power feeding members 91 to 93 are integrally formed by insert molding (integral molding), and the heat dissipation member 8 is integrally attached to the insulating member 7 and the power feeding members 91 to 93. Construction. Alternatively, the power supply members 91 to 93 are integrally assembled to the insulating member 7, and the heat dissipation member 8 is integrally attached to the insulating member 7 and the power supply members 91 to 93.

(Description of insulating member 7)
The insulating member 7 is provided with an attachment portion for attaching the light source unit 1 to the vehicular lamp 100 detachably or fixedly. The insulating member 7 is made of, for example, an insulating resin member. The insulating member 7 has a substantially cylindrical shape whose outer diameter is slightly smaller than the inner diameter of the through hole 104 of the lamp housing 101. A flange 71 is integrally provided at one end (upper end) of the insulating member 7. At one end (upper end) of the insulating member 7, a plurality of, in this example, four mounting portions 70 are integrally provided so as to correspond to the concave portion of the lamp housing 101. Note that only three attachment portions 70 are shown in FIGS. 3 and 4.

  The mounting portion 70 is used to equip the vehicle lamp 100 with the light source unit 1. That is, a part of the socket portion 11 on the cover 12 side and the mounting portion 70 are inserted into the through hole 104 and the concave portion of the lamp housing 101. In this state, the socket portion 11 is rotated around the center O axis, and the mounting portion 70 is brought into contact with the stopper portion of the lamp housing 101. At this time, the mounting portion 70 and the flange portion 71 sandwich the edge portion of the through hole 104 of the lamp housing 101 from above and below via the packing 108 (see FIG. 2).

  As a result, the socket portion 11 of the light source unit 1 is detachably attached to the lamp housing 101 of the vehicle lamp 100 via the packing 108 as shown in FIG. At this time, as shown in FIG. 2, the portion of the socket portion 11 that protrudes outward from the lamp housing 101 (the portion below the lamp housing 101 in FIG. 2) is the lamp chamber 105 of the socket portion 11. It is larger than the portion housed inside (the portion above the lamp housing 101 in FIG. 2).

  A light source side connector portion 13 is integrally provided at the other end portion (lower end portion) of the insulating member 7. A connector 14 on the power supply side is attached to the connector portion 13 so as to be mechanically detachable and electrically connectable.

(Description of heat dissipation member 8)
The heat radiating member 8 radiates heat generated by the light source unit 10 to the outside. The heat radiating member 8 is made of, for example, an aluminum die casting or a resin member having thermal conductivity (also having conductivity). The heat radiating member 8 has one end portion (upper end portion) having a flat plate shape and a fin shape from the intermediate portion to the other end portion (lower end portion). A contact surface 80 is provided on the upper surface of one end of the heat radiating member 8. The contact surface 80 of the heat radiating member 8 is bonded to the contact surface 80 of the substrate 3 by a heat conductive medium 36 in a state where the contact surfaces 35 of the substrate 3 are in contact with each other. As a result, the light emitting chips 41 to 44 are positioned corresponding to locations where the vicinity of the center O of the heat radiating member 8 (the center O of the socket portion 11) is located via the substrate 3.

  The heat conductive medium 36 is, for example, a heat conductive adhesive, and is made of an epoxy resin adhesive, a silicon resin adhesive, an acrylic resin adhesive, or the like as a material. In the form of a tape or tape. The thermally conductive medium 36 may be a thermally conductive grease in addition to the thermally conductive adhesive.

  Notches 81, 82, and 83 are provided in the center of the three sides (right side, left side, and lower side) of the heat radiating member 8 so as to correspond to the insertion holes 31 to 33 of the substrate 3, respectively. The three power supply members 91 to 93 are arranged in the notches 81 to 83 of the heat radiating member 8 and the insertion holes 31 to 33 of the substrate 3, respectively. The insulating member 7 is interposed between the heat radiating member 8 and the power feeding members 91 to 93. The heat radiating member 8 is in close contact with the insulating member 7. The power supply members 91 to 93 are in close contact with the insulating member 7.

(Description of power supply members 91-93)
The power supply members 91 to 93 supply power to the light source unit 10. The power feeding members 91 to 93 are made of, for example, a conductive metal member. One end portions (upper end portions) of the power supply members 91 to 93 have a divergent shape, and are respectively located in the notches 81 to 83 of the heat dissipation member 8 and the insertion holes 31 to 33 of the substrate 3. One end portions of the power supply members 91 to 93 are electrically connected to the wiring 6 of the light source unit 10 through the connection member 17.

  That is, as shown in FIG. 4, in one end surface (upper end surface) of the insulating member 7, the portions corresponding to the insertion holes 31 to 33 of the substrate 3 and the notches 81 to 83 of the heat radiating member 8 are Protrusions 72 projecting into the insertion holes 31 to 33 and 81 to 83 are integrally provided. One end portions of the power supply members 91 to 93 protrude from the convex portion 72, are electrically and mechanically connected to the connection member 17, and are electrically connected to the wiring 6 of the substrate 3. . In this way, the light source unit 10 is attached to one end portion (one end opening portion) of the cylindrical socket portion 11.

  The other end portions (lower end portions) of the power supply members 91 to 93 have a narrowed shape and are disposed in the connector portion 13. The other end portions of the power supply members 91 to 93 constitute male terminals (male terminals) 910, 920, and 930.

(Description of connector portion 13 and connector 14)
The connector 14 is provided with a female terminal (female terminal) (not shown) that is electrically connected to the male terminals 910 to 930 of the connector portion 13. By attaching the connector 14 to the connector portion 13, the female terminal is electrically connected to the male terminals 910 to 930. Further, by removing the connector 14 from the connector portion 13, electrical connection between the female terminal and the male terminals 910 to 930 is interrupted.

  As shown in FIG. 2, the first female terminal and the second female terminal of the connector 14 are connected to a power source (DC power supply battery) (not shown) via harnesses 144 and 145 and a switch (not shown). It is connected to the. The third female terminal of the connector 14 is grounded (grounded) via a harness 146. The connector portion 13 and the connector 14 are 3-pin (the three power feeding members 91 to 93, the three male terminals 910 to 930, and the three female terminals) type connector portions and connectors.

(Description of switch SW)
The switch is a three-position changeover switch including a movable contact, a first fixed contact, a second fixed contact, a third fixed contact, and a common fixed contact. When the movable contact is switched to the position of the first fixed contact, a current (driving current) is supplied to the two light emitting chips 43 and 44 having the tail lamp function through the diode and the resistor having the tail lamp function. It is.

  When the movable contact is switched to the position of the second fixed contact, a current (drive current) is supplied to the four light emitting chips 41 to 44 having the stop lamp function via the diode and the resistor having the stop lamp function. It is in a state.

  When the movable contact is switched to the position of the third fixed contact, the current supply to the four light emitting chips 41 to 44 is interrupted.

(Description of cover part 12)
The cover portion 12 is made of a light transmissive member. The cover unit 12 is provided with an optical control unit (not shown) such as a prism that optically controls and emits light from the four light emitting chips 41 to 44.

  As shown in FIG. 2, the cover portion 12 is attached to one end portion (one end opening portion) of the cylindrical socket portion 11 so as to cover the light source portion 10. The cover portion 12 prevents the four light emitting chips 41 to 44 from being influenced from the outside, for example, contact with other components or adhesion of dust. That is, the cover 12 protects the four light emitting chips 41 to 44 from disturbance.

  The cover 12 may be provided with a vent (not shown). In this case, a sealing member (not shown) is provided on the mounting surface 34 of the substrate 3 so as to cover at least the light emitting chips 41 to 44, the resistor, the diode, and the wiring 6. Yes.

(Description of connecting member 17)
Hereinafter, the connecting member 17 will be described with reference to FIG. FIG. 7A is a plan view of the connection member 17. FIG. 7B is a view taken in the direction of arrow B in FIG. FIG. 7C is a cross-sectional view taken along the line CC in FIG. FIG. 7D is a view taken in the direction of arrow D in FIG. FIG. 7E is a cross-sectional view taken along line EE in FIG.

  The connecting member 17 is composed of a member having conductivity, elasticity, and malleability (ductility, plasticity), for example, a member such as phosphor bronze. The connecting member 17 electrically connects the light source unit 10 and the socket unit 11. As shown in FIG. 7, the connecting member 17 includes a rectangular plate-shaped main body 170, a pin-shaped (small rectangular plate-shaped) light source connecting portion 171, and a Mt. Fuji shape (C-shaped, 8-shaped). Shape) socket connection portion 172.

  The light source connection portion 171 is electrically and mechanically connected to the wiring 6 of the light source portion 10. The light source connection portion 171 is formed by bending a small rectangular plate portion integrally provided at substantially the center of the two short sides of the main body portion 170 in one direction (downward) at a substantially right angle.

  The socket connection portion 172 is electrically and mechanically connected to the power supply members 91 to 93 of the socket portion 11. The light source connection portion 172 extends two pieces surrounded by an H-shaped (D-shaped) groove provided in the main body portion 170 from the main body portion 170 in the other direction (upward), and is Mt. Fuji shape. It is formed. Between one end (upper end) of the two light source connection portions 172, a gap 173 is provided as an insertion hole into which one end portion of the power supply members 91 to 93 is inserted. On the inner surfaces of the two light source connection portions 172 facing each other, a guide 174 having a surface that curves and narrows in one direction from the main body portion 170 is provided. The guide 174 guides insertion of one end of the power supply members 91 to 93 into the gap 173.

(Explanation of electrical connection between light source part and socket part by connecting member)
Of the insulating member 7 of the socket portion 11, on both sides of the power supply members 91 to 93, at locations where the light source connection portion 171 of the connection member 17 is located, the light source connection portion 171 is allowed to escape. A recess 73 is provided. On the other hand, on both sides of the insertion holes 31 to 33 of the substrate 3 of the light source unit 10, the fitting holes 37 are provided corresponding to the light source connection units 171 of the connection member 17. Further, a conductive adhesive 38 (for example, solder or conductive paste) is provided around the engagement hole 37 in the mounting surface 34 of the substrate 3.

  First, as indicated by solid line arrows in FIG. 8, the two light source connection portions 172 of the connection member 17 are respectively fitted into the two fitting holes 37 of the substrate 3 of the light source unit 10. When fitting the light source connection portion 172 into the fitting hole 37, as shown in FIG. 9, the light source connection portion 172 is moved outward by a receiving jig (not shown) arranged on the substrate 3 side. It is bent and applied to the contact surface 35 of the substrate 3 and the edge of the fitting hole 37. Then, heat is applied to the conductive adhesive 38. Thereby, the light source connection part 172 of the connection member 17 is electrically and mechanically connected to the wiring 6 of the substrate 3 of the light source part 10, and the light source part 10 The substrate 3 and the connection member 17 are temporarily fixed (sub-assembly).

  Next, the thermal conductive medium 36 is applied on the contact surface 80 of the heat radiating member 8 of the socket portion 11. Then, as shown by solid line arrows in FIG. 10, one end portions of the power supply members 91 to 93 are first inserted into the insertion holes 31 to 33 of the substrate 3, and then the connection member 17. It is inserted into the gap 173 between the socket connecting portions 172 while being guided by the guide 174 of the connecting portion 17. At the same time, the light source connecting portion 172 of the connecting member 17 is positioned in the concave portion 73 of the insulating member 7.

  Subsequently, as shown in FIG. 11, the contact surface 35 of the substrate 3 of the light source unit 10 is placed on the thermally conductive medium 36 of the socket unit 11. At this time, the two socket connection portions 172 of the connection member 17 are in elastic contact with both sides of one end portion of the power supply members 91 to 93. Alternatively, the two socket connection portions 172 of the connection member 17 and both sides of one end portion of the power supply members 91 to 93 are not in contact with each other.

  Then, as indicated by solid line arrows in FIG. 11, the two socket connection portions 172 of the connection member 17 are crimped to both sides of one end portion of the power supply members 91 to 93. Then, as shown in FIGS. 5 and 6, the two socket connection portions 172 of the crimped connection member 17 and both sides of one end portion of the power supply members 91 to 93 are welded by laser welding or the like. In addition, the code | symbol "175" and the thick continuous line part in FIG. 6 show a welding part. Thereby, the socket connection portion 172 of the connection member 17 is electrically and mechanically connected to the power supply members 91 to 93 of the socket portion 11.

  During the caulking process and the welding process, the substrate 3 is pressurized toward the heat radiating member 8. The heat conductive medium 36 is attached and fixed under the pressure. Thereby, the light source unit 10 and the socket unit 11 are electrically connected by the connection member 17. In FIGS. 5, 6, and 8 to 11, only one power supply member 91 among the three power supply members 91 to 93 is illustrated. The remaining two power supply members 92 and 93 are electrically and mechanically connected to the socket connection portion 172 of the connection member 17 in the same manner as the one power supply member 91.

  The light source unit 1 of the semiconductor-type light source of the vehicle lamp according to the first embodiment and the vehicle lamp 100 according to the present embodiment (hereinafter referred to as “the light source unit 1 and the vehicle lamp 100 according to the first embodiment”) are as described above. Hereinafter, the operation will be described.

  First, the movable contact of the switch is switched to the first fixed contact. Then, the current (drive current) is supplied to the two light emitting chips 43 and 44 having the tail lamp function through the diode and the resistor having the tail lamp function. As a result, the two light emitting chips 43 and 44 having the tail lamp function emit light.

  Light emitted from the two light emitting chips 43 and 44 having the tail lamp function is transmitted through the cover portion 12 of the light source unit 1 and light distribution is controlled. A part of the light emitted from the light emitting chips 43 and 44 is reflected by the highly reflective surface 30 of the substrate 3 toward the cover unit 12. The light subjected to the light distribution control is transmitted through the lamp lens 102 of the vehicular lamp 100, is again subjected to the light distribution control, and is irradiated to the outside. Thereby, the vehicular lamp 100 irradiates the light distribution of the tail lamp function to the outside.

  Next, the movable contact of the switch is switched to the second fixed contact. Then, the current (drive current) is supplied to the four light emitting chips 41 to 44 having the stop lamp function via the diode and the resistor having the stop lamp function. As a result, the four light emitting chips 41 to 44 having the stop lamp function emit light. That is, in contrast to the two light emitting chips 43 and 44 having the tail lamp function that have been emitting light until now, the two light emitting chips 41 and 42 having the stop lamp function that have been extinguished until now are tail lamp functions that have been emitted until now. The two light emitting chips 43 and 44 emit new light.

  Light emitted from the four light emitting chips 41 to 44 having the stop lamp function is transmitted through the cover portion 12 of the light source unit 1 and light distribution is controlled. A part of the light emitted from the light emitting chips 41 to 44 is reflected by the highly reflective surface 30 of the substrate 3 to the cover unit 12 side. The light subjected to the light distribution control is transmitted through the lamp lens 102 of the vehicular lamp 100, is again subjected to the light distribution control, and is irradiated to the outside. Thereby, the vehicular lamp 100 irradiates the light distribution of the stop lamp function to the outside. The light distribution of the stop lamp function is brighter (the luminous flux, luminous intensity, and illuminance are large) compared to the light distribution of the tail lamp function.

  Then, the movable contact of the switch is switched to the third fixed contact. Then, the current (drive current) is interrupted. As a result, the four light emitting chips 41 to 44 or the two light emitting chips 43 and 44 are extinguished. Thereby, the vehicular lamp 100 is turned off.

  The heat generated in the light emitting chips 41 to 44 and the resistors, diodes, and wiring 6 of the light source unit 10 is transmitted to the heat radiating member 8 through the substrate 3 and the heat conductive medium 36 and radiated from the heat radiating member 8 to the outside. Is done.

  The light source unit 1 and the vehicular lamp 100 according to the first embodiment are configured and operated as described above, and the effects thereof will be described below.

  In the light source unit 1 and the vehicular lamp 100 according to the first embodiment, the light source connection portion 171 of the connection member 17 is electrically and mechanically connected to the wiring 6 as the wiring element of the light source portion 10 and connected. The socket connection portion 172 of the member 17 is electrically and mechanically connected to the power feeding members 91 to 93 of the socket portion 11. As a result, the light source unit 1 and the vehicle lamp 100 according to the first embodiment are connected to the wiring 6 of the light source unit 10 and the power supply members 91 to 93 of the socket unit 11 via the light source connection unit 171 and the socket connection unit 172 of the connection member 17. Can be reliably connected electrically and mechanically.

  Further, in the light source unit 1 and the vehicle lamp 100 in the first embodiment, the power supply member 91 is inserted into the gap 173 as the insertion hole of the socket connection portion 172 of the connection member 17 by the guide 174 of the socket portion connection portion 172 of the connection member 17. -93 can be inserted reliably. As a result, the light source unit 1 and the vehicular lamp 100 according to the first embodiment connect the shift even if the insertion positions of the gap 173 of the socket connection portion 172 of the connection member 17 and the power feeding members 91 to 93 are slightly shifted. It can be absorbed by the guide 174 of the socket connection 172 of the member 17. Thereby, since the light source unit 1 and the vehicle lamp 100 according to the first embodiment can reliably insert the power feeding members 91 to 93 into the gap 173 of the socket connection portion 172 of the connection member 17, the socket of the connection member 17. The connection part 172 and the power supply members 91 to 93 of the socket part 11 can be further electrically and mechanically connected.

  Furthermore, in the light source unit 1 and the vehicle lamp 100 according to the first embodiment, the socket connection portion 172 of the connection member 17 and the power supply members 91 to 93 are electrically connected by elastic contact, crimping, and welding connection means. And mechanically connected. As a result, the light source unit 1 and the vehicular lamp 100 according to the first embodiment more reliably electrically and mechanically connect the socket connection portion 172 of the connection member 17 and the power supply members 91 to 93 of the socket portion 11. be able to.

  Furthermore, the light source unit 1 and the vehicular lamp 100 according to the first embodiment are configured such that the light source connection portion 171 as the fitting protrusion of the connecting member 17 is fitted into the fitting hole 37 of the substrate 3, thereby The light source connection part 171 and the board | substrate 3 can be positioned mutually. As a result, the light source unit 1 and the vehicular lamp 100 according to the first embodiment can more reliably electrically and mechanically connect the light source connecting portion 171 of the connecting member 17 and the substrate 3 of the light source portion 10. .

  In addition, the light source unit 1 and the vehicular lamp 100 according to the first embodiment are configured so that the light source connection portion 171 as the fitting protrusion of the connection member 17 is fitted into the fitting hole 37 of the substrate 3, whereby the light source of the connection member 17. The connection portion 171 and the substrate 3 of the light source unit 10 can be mechanically connected. In addition, the light source connection portion 171 of the connection member 17 is fitted in the fitting hole 37 of the substrate 3 and then bent and fitted. By hitting the edge of the hole 37, the light source connection part 171 of the connection member 17 and the substrate 3 of the light source part 10 can be mechanically reliably connected.

  Furthermore, in the light source unit 1 and the vehicle lamp 100 according to the first embodiment, the light source connection portion 171 of the connection member 17 and the wiring 6 as the wiring element of the substrate 3 are electrically and mechanically connected by the conductive adhesive 38. Connected. As a result, the light source unit 1 and the vehicular lamp 100 according to the first embodiment can more reliably electrically and mechanically connect the light source connecting portion 171 of the connecting member 17 and the substrate 3 of the light source portion 10. .

  Furthermore, in the light source unit 1 and the vehicle lamp 100 according to the first embodiment, the heat conductive medium 36 applied between the substrate 3 and the heat radiating member 8 is connected to the socket connecting portion 172 and the socket portion of the connecting member 17. 11 when the power supply members 91 to 93 are electrically and mechanically connected to each other by means of elastic contact, crimping and welding, and the substrate 3 is attached and fixed under pressure to pressurize the heat radiation member 8 side. It is. As a result, the light source unit 1 and the vehicular lamp 100 according to the first embodiment can reduce the film thickness of the heat conductive medium 36 applied between the substrate 3 and the heat dissipation member 8, and Variations in the film thickness of the thermal conductive medium 36 applied between the substrate 3 and the heat dissipation member 8 can be absorbed. Thereby, the light source unit 1 and the vehicle lamp 100 according to the first embodiment can reliably bond the substrate 3 and the heat radiating member 8 via the heat conductive medium 36 (in the case of a heat conductive adhesive). Therefore, the light source unit 10 and the socket unit 11 can be firmly fixed to each other. As a result, the wiring as the wiring element of the light source unit 10 is provided via the light source connection unit 171 and the socket connection unit 172 of the connection member 17. 6 and the power supply members 91 to 93 of the socket portion 11 can be more reliably electrically and mechanically connected.

  In addition, the light source unit 1 and the vehicle lamp 100 according to the first embodiment can reliably attach and fix (adhere) the substrate 3 and the heat dissipation member 8 via the heat conductive medium 36. The generated heat can be efficiently radiated to the outside through the substrate 3, the heat conductive medium 36 and the heat radiating member 8. In the case where the substrate 3 and the socket portion 11 are mechanically fixed by the connecting member 17 and the power supply members 91 to 93 as in the first embodiment, the heat conductive adhesive 36 is used as the heat conductive medium 36. In addition, a heat conductive grease may be used.

  FIG. 12 shows Example 2 of the light source unit of the semiconductor type light source of the vehicular lamp according to the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 11 denote the same elements.

  In the light source unit of the semiconductor type light source of the vehicle lamp in the second embodiment, the light source connection portion 171 of the connection member 17 is electrically and mechanically connected to the wiring 6 of the substrate 3 without being bent. To do. Further, the light source unit of the semiconductor-type light source of the vehicular lamp according to the second embodiment has the power supply member 91 in a state where the socket connection portion 172 of the connection member 17 that elastically contacts the power supply members 91 to 93 is not tightened. To 93 (see welded portion 175).

  Since the light source unit of the semiconductor type light source of the vehicular lamp according to the second embodiment is configured as described above, it achieves substantially the same function and effect as the light source unit of the semiconductor type light source of the vehicular lamp according to the first embodiment. be able to.

(Description of examples other than Examples 1 and 2)
In the first and second embodiments, the inner peripheral surface of the insertion holes 31 to 33 as the insertion holes of the substrate 3 and the outer peripheral surface of one end as the insertion end portions of the power feeding members 91 to 93 are flat (vertical). Surface). However, in the present invention, as shown by the dotted lines in FIG. 10, the inner peripheral surface of the insertion holes 31 to 33 as the insertion holes of the substrate 3 and the outer peripheral surface of one end as the insertion end portions of the power supply members 91 to 93. Moreover, you may provide the inclined surfaces 39 and 911 which incline toward the end from the top to the bottom with respect to the insertion direction (the upward solid arrow direction in FIG. 10).

  The insertion of the substrate 3 is performed by the inclined surface 39 of the inner peripheral surface of the insertion holes 31 to 33 as the insertion holes of the substrate 3 and the inclined surface 911 of the outer peripheral surface of one end as the insertion end portions of the power feeding members 91 to 93. One end portions of the power supply members 91 to 93 can be smoothly inserted into the holes 31 to 33. As a result, even if the insertion positions of the insertion holes 31 to 33 of the board 3 and the one end portions of the power feeding members 91 to 93 are slightly deviated, the deviation is caused by the inclined surface 39 of the inner peripheral surface of the insertion holes 31 to 33 of the board 3. And the inclined surface 911 on the outer peripheral surface of one end as the insertion end of the power feeding members 91 to 93 can be absorbed. Thereby, the relative position of the board | substrate 3 and the electric power feeding members 91-93 can be determined, As a result, the wiring 6 and socket part of the light source part 10 are connected via the light source connection part 171 and the socket connection part 172 of the connection member 17. Eleven power supply members 91 to 93 can be more reliably electrically and mechanically connected.

  In the first and second embodiments, the four light emitting chips 41 to 44 are used. However, in the present invention, the number of light emitting chips may be two, three, five or more. The number and layout of the light emitting chips used as the tail lamp function and the number and layout of the light emitting chips used as the stop lamp function are not particularly limited.

  Furthermore, in the said Example 1, 2, it uses for a tail stop lamp. However, in the present invention, it can be used for a combination lamp other than the tail / stop lamp or a single-function lamp. Single function lamps include turn signal lamp, backup lamp, stop lamp, tail lamp, headlamp low beam lamp (passing headlamp), headlamp high beam lamp (running headlamp), fog lamp, clearance lamp, cornering lamp There is a detime running lamp.

  Furthermore, in the said Example 1, 2, it uses for switching of two lamps, a tail lamp and a stop lamp. However, in the present invention, it can be used for switching between three or more lamps.

  Furthermore, in the said Example 1, 2, the four light emitting chips 41-44 are arrange | positioned in 1 row. However, in the present invention, the light emitting chips may be arranged in a circular shape on a square corner in a plurality of rows. For example, it may be arranged at four corners of a rectangle or at three corners of a triangle.

  Furthermore, in the first and second embodiments, the light distribution is controlled by the cover portion 12 and the lamp lens 102. However, in the present invention, the light distribution may be controlled by at least one of the cover portion 12 and the lamp lens 102.

  In the first and second embodiments, all of the four light emitting chips 41 to 44 are used for the stop lamp function, and the two light emitting chips 43 and 44 are used for the tail lamp function. It is. However, in the present invention, all of the four light emitting chips 41 to 44 may be used for the stop lamp function, and the other two light emitting chips 41 and 42 may be used for the tail lamp function.

  Furthermore, in the first and second embodiments, the connector portion 13 is provided integrally with the socket portion 11. However, in the present invention, the connector portion 13 may not be provided integrally with the socket portion 11. In this case, a light source side connector is provided separately from the socket portion 11, and the light source side connector is electrically connected to the power supply member of the light source unit 1 (see the power supply members 91 to 93 of the first embodiment) via a harness. To connect. By attaching the power source side connector 14 to the light source side connector, electricity is supplied to the light source unit 10, and by removing the power source side connector 14 from the light source side connector, electricity supply to the light source unit 10 is achieved. Blocked.

DESCRIPTION OF SYMBOLS 1 Light source unit 10 Light source part 11 Socket part 12 Cover part 13 Connector part 14 Connector 144, 145, 146 Harness 17 Connection member 170 Main-body part 171 Light source connection part (fitting protrusion)
172 Socket connection part 173 Clearance (insertion hole)
174 Guide 175 Welded portion 100 Vehicle lamp 101 Lamp housing 102 Lamp lens 103 Reflector 104 Through hole 105 Lamp chamber 106 Through hole 107 Reflecting surface 108 Packing 3 Substrate 30 High reflecting surface 31, 32, 33 Insertion hole 34 Mounting surface 35 Contact Surface 36 Thermally conductive medium 37 Fitting hole 38 Conductive adhesive 39 Inclined surface 41, 42, 43, 44 Light emitting chip 6 Wiring (wiring element)
7 Insulating member 70 Mounting portion 71 Gutter portion 72 Convex portion 73 Concave portion 8 Heat radiation member 80 Abutting surface 81, 82, 83 Notch 91, 92, 93 Feed member 911 Inclined surface F Focus O Center

Claims (8)

In a light source unit of a semiconductor-type light source for a vehicle lamp,
A light source part, a socket part to which the light source part is attached, and a connection member that electrically connects the light source part and the socket part,
The light source unit includes a substrate, a light emitting chip of a semiconductor light source mounted on the substrate, and a wiring element that is provided on the substrate and supplies power to the light emitting chip.
The socket portion includes an insulating member provided with an attachment portion for attachment to the vehicular lamp, a heat radiating member that radiates heat generated in the light source portion to the outside, a power supply member that supplies power to the light source portion, The heat dissipation member and the power supply member are incorporated in the insulating member in an insulated state,
The connection member includes a light source connection portion that is electrically and mechanically connected to the wiring element of the light source portion, and a socket connection that is electrically and mechanically connected to the power supply member of the socket portion. And comprising
A light source unit for a semiconductor light source of a vehicular lamp. The socket connection portion is provided with an insertion hole into which the power feeding member is inserted and a guide for guiding the power feeding member into the insertion hole, respectively.
The light source unit of the semiconductor type light source of the vehicular lamp according to claim 1. The electrical and mechanical connection between the socket connection portion and the power supply member is composed of at least one connection means among caulking, elastic contact, and welding.
The light source unit of the semiconductor type light source of the vehicular lamp according to claim 1 or 2. The light source connection portion and the substrate are provided with fitting protrusions and fitting holes that are positioned and fitted to each other.
The light source unit of the semiconductor type light source of the vehicle lamp of any one of Claims 1-3 characterized by the above-mentioned. The electrical and mechanical connection between the light source connection portion and the wiring element is made of a conductive adhesive.
The light source unit of the semiconductor type light source of the vehicle lamp of any one of Claims 1-4 characterized by the above-mentioned. A heat conductive medium is applied between the substrate and the heat dissipation member, and the heat conductive medium is electrically and mechanically connected between the socket connection portion and the power supply member. , Mounting and fixing the substrate under pressure to pressurize the heat radiating member.
The light source unit of the semiconductor type light source of the vehicle lamp of any one of Claims 1-5 characterized by the above-mentioned. The board is provided with an insertion hole through which the power supply member is inserted,
The inner peripheral surface of the insertion hole of the substrate and the outer peripheral surface of the insertion end portion of the power supply member are provided with inclined surfaces that are inclined with respect to the insertion direction, respectively.
The light source unit of the semiconductor type light source of the vehicle lamp of any one of Claims 1-6 characterized by the above-mentioned. In a vehicular lamp using a semiconductor-type light source as a light source,
A lamp housing and a lamp lens that partition the lamp chamber;
The light source unit of the semiconductor-type light source of the vehicular lamp according to any one of claims 1 to 7, which is disposed in the lamp chamber;
A vehicular lamp characterized by comprising:

Images