JP2008052919A - Vehicular lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that a manufacturing cost increases and energy consumption increases if a connection terminal fixed to a wiring heater is arranged in an inconspicuous part of the front lens in consideration of appearance in a conventional vehicular lighting fixture in which a lamp lens has a snow melting structure. <P>SOLUTION: A power supply part 6 to supply a current to a line heater 5 is constituted of a film 24 extended and installed from a base film 17 of the line heater 5, a conductive paste 25 which is formed in a line pattern on one face of the film 24 and of which one end is electrically connected to the conductive paste 19 of the line heater 5, and a connector 26 which is electrically connected to the other end of the conductive paste 25 and which is fixed to the lamp lens 4 together with the tip of the film 24. As a result, the problems of appearance, the manufacturing cost, and energy consumption can be solved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicular lamp in which a lamp lens has a snow melting (ice melting, anti-fogging) structure.

  This type of vehicular lamp is conventionally known (for example, Patent Document 1). Hereinafter, a conventional vehicle lamp will be described. Conventional vehicle lamps are fixed to the front lens, the wiring board heater (conductive foil pattern printed on the base film) bonded and integrated to the front lens with an adhesive, and the wiring board heater. A connecting terminal.

  Hereinafter, the operation of the conventional vehicle lamp will be described. When the connection terminal on the power supply side is connected to the connection terminal and power is supplied to the conductive foil pattern of the wiring board heater, the conductive foil pattern generates heat, and the heat melts snow, ice and cloudiness adhering to the front lens. Or removed. As a result, loss of light irradiated from the front lens to the outside can be prevented. In particular, in a vehicular lamp using a light source having a low temperature of light emitted from a front lens as a light source, for example, a semiconductor light source such as an LED or a discharge lamp such as an HID, as compared with a halogen bulb or an incandescent bulb. Is effective.

  However, the conventional vehicular lamp has the following problems because the connection terminal is fixed to the wiring board heater and a part of the wiring board heater and the connection terminal are provided at the same position. That is, the wiring board heater need only be provided at least in a portion of the front lens that is irradiated with light. However, in this case, since the connection terminal is located in a portion of the front lens that is irradiated with light, that is, a conspicuous portion, this connection terminal is visible through the front lens, and there is a problem in appearance. Therefore, in consideration of appearance, the connection terminal is arranged in an inconspicuous portion of the front lens. Then, in this case, the wiring board heater has a wide range from the portion of the front lens that is irradiated with light to a portion that is not conspicuous (that is, a portion that is not irradiated with light and does not require the wiring board heater). It is necessary to provide across. For this reason, since a useless wiring board heater is required, there are problems such as an increase in manufacturing cost and power consumption.

Japanese Patent Laid-Open No. 10-109587

  The problem to be solved by the present invention is that the conventional vehicular lamp has a problem in appearance or a problem in manufacturing cost and power consumption.

  The present invention (invention according to claim 1) includes a lamp housing and a lamp lens that define a lamp chamber, a light irradiation unit that is disposed in the lamp chamber and irradiates light through the lamp lens, and the lamp lens. A line heater provided by transfer, and a power supply unit that supplies current to the line heater, the power supply unit extending from the base film of the line heater, and a line pattern on one surface of the film A conductive member for feeding that is formed on the one end and electrically connected to the conductive member for heater of the wire heater, and a film that is electrically connected to the other end of the conductive member for feeding and And a connector fixed to the lamp lens together with the tip of the lens.

  Moreover, this invention (invention concerning Claim 2) is comprised from the terminal and the crimping tool which fixes the terminal to a film, and electrically connects to the electrically-conductive member for electric power feeding. It is characterized by that.

  Further, the present invention (invention according to claim 3) is a surface mount type connector in which the connector is fixed to the film and electrically connected to the power supply conductive member by the conductive adhesive and the sealing agent. It is characterized by that.

  Furthermore, the present invention (invention according to claim 4) is a connector for a flexible flat cable, wherein the connector is fixed to the film by insertion and is electrically connected to the conductive member for power feeding. And

  Furthermore, the present invention (the invention according to claim 5) is a spring pressure type connector in which the connector is fixed to the film by a double-sided adhesive tape and is electrically connected to the power supply conductive member. Features.

  Furthermore, according to the present invention (the invention according to claim 6), the wire heater and the power feeding portion are provided on the lamp chamber side of the lamp lens, and the heater-side harness is electrically connected to the connector. The side harness is drawn out of the lamp chamber from the lamp chamber.

  The vehicular lamp according to the present invention (the invention according to claim 1) is configured such that the lamp lens is separated from the line heater and the connector of the power feeding unit while the electrical connection is maintained by the film of the power feeding unit and the conductive member for power feeding. Can be provided at different positions. As a result, in the vehicular lamp of the present invention (the invention according to claim 1), the line heater is provided in the portion of the lamp lens where the light is irradiated, and the connector of the power feeding unit is the inconspicuous portion of the lamp lens (that is, It can be provided on a portion that is not irradiated with light and does not require a line heater, for example, a side wall attached to the lamp housing. As a result, the vehicular lamp according to the present invention (the invention according to claim 1) can solve the appearance problem because it is not necessary to provide the connector of the power feeding portion in a conspicuous portion of the lamp lens. Since it is not necessary to provide the heater up to the inconspicuous portion of the lamp lens, it is possible to solve problems in manufacturing cost and power consumption.

  In addition, the vehicular lamp according to the present invention (the invention according to claim 1) is lighter in comparison with the harness in the film of the power feeding unit and the conductive member for power feeding connecting the wire heater and the connector of the power feeding unit. Since it is thin, the load on the line heater transferred to the lamp lens is small.

  In addition, in the vehicular lamp according to the present invention (the invention according to claim 1), the film of the power feeding portion extends from the base film of the wire heater, and the tip of the film of the power feeding portion and the connector are the lamp lens. It is fixed to. For this purpose, the vehicular lamp of the present invention (the invention according to claim 1) is fixed to the lamp lens via a wire heater in which one of the power feeding parts is transferred to the lamp lens, The other is fixed to the lamp lens via a film tip and a connector. As a result, the vehicular lamp according to the present invention (the invention according to claim 1) does not need to fix the power feeding part to the lamp lens over the whole, so that the power feeding part can be easily and reliably fixed to the lamp lens. Can do.

  In particular, the lamp lens is a lamp lens in which a corner is formed between a portion where the wire heater is transferred and a portion where the connector of the power feeding portion is fixed. In this case, after the wire heater is transferred to the lamp lens, when the film of the power feeding unit is bent along the corner of the lamp lens and the tip of the film of the power feeding unit and the connector are fixed to the lamp lens, the power feeding unit Due to the elastic restoring force of the film, the power feeding portion can be reliably fixed in a state along the corner of the lamp lens.

  In addition, the vehicular lamp according to the present invention (the invention according to claim 1) does not need to fix the power feeding portion to the lamp lens over the whole, and therefore, after the wire heater is transferred to the lamp lens, the leading end of the film of the power feeding portion. And the connector can be fixed to the lamp lens. For this reason, in the vehicular lamp according to the present invention (the invention according to claim 1), when transferring the line heater to the lamp lens, a feeding portion having a film width wider than the base film width of the line heater is simultaneously applied to the lamp lens. Since it is not necessary to fix, the film-like line heater can be reliably and easily transferred to the lamp lens.

  Further, the vehicle lamp of the present invention (the invention according to claim 2) is such that the terminal is fixed to the film by the caulking tool and electrically connected to the power supply conductive member, so that the terminal is securely attached to the film. And can be reliably electrically connected to the conductive member for power feeding. As a result, the vehicular lamp according to the present invention (the invention according to claim 2) can reliably supply current to the wire heater via the power feeding portion by the connector including the terminal and the crimping tool.

  Moreover, in the vehicle lamp of the present invention (the invention according to claim 2), since the connector is composed of a crimping tool and a terminal, a surface mount type connector, a flexible flat cable connector, and a spring pressure type are used. Compared to other connectors and other connectors, the number of parts is small, and the manufacturing cost is low accordingly.

  Furthermore, the vehicular lamp according to the present invention (the invention according to claim 3) can reliably supply current to the line heater via the power feeding portion by the surface mount type connector. In addition, since the vehicular lamp of the present invention (the invention according to claim 3) can provide the surface mount type connector at a position away from the line heater, the surface mount type connector is sealed by the heat of the line heater. It is possible to prevent gas from being generated from the agent and fogging of the lamp lens.

  Furthermore, the vehicular lamp according to the present invention (the invention according to claim 4) can reliably supply current to the wire heater via the power feeding section by the flexible flat cable connector. In addition, the vehicular lamp of the present invention (the invention according to claim 4) is one in which the flexible flat cable connector is inserted into the film of the power feeding portion and fixed after the wire heater is transferred to the lamp lens. For this reason, in the vehicular lamp of the present invention (the invention according to claim 4), the flexible flat cable connector is not fixed to the base film of the wire heater and the film of the power feeding portion when the wire heater is transferred. Therefore, the lamp lens is not damaged by the connector and the base film and the film are not twisted due to the weight of the connector, and workability is improved.

  Furthermore, the vehicular lamp according to the present invention (the invention according to claim 5) can reliably supply a current to the wire heater via the power feeding portion by the spring pressure type connector. In addition, the vehicular lamp according to the present invention (the invention according to claim 5) transfers the wire heater to the lamp lens, and then fixes the leading end of the film of the power feeding portion to the lamp lens, and then uses the spring pressure type. The connector is fixed to the film of the power feeding unit with a double-sided adhesive tape. For this reason, the vehicular lamp of the present invention (the invention according to claim 5) has a spring pressure applied to the base film of the wire heater and the film of the power feeding unit during transfer of the wire heater and when the film of the power feeding unit is fixed. Since the connector of the type is not fixed, it is difficult for the lamp lens to be damaged by the connector and the base film or the film to be twisted due to the weight of the connector, thereby improving workability.

  Furthermore, the vehicular lamp according to the present invention (the invention according to claim 6) attaches the lamp housing and the lamp lens because the heater-side harness connected to the connector of the power feeding section is pulled out of the lamp chamber. After that, the heater side harness and the power source side harness can be connected and wired outside the lamp chamber. As a result, the vehicular lamp of the present invention (the invention according to claim 6) is simpler than the step of attaching the lamp housing and the lamp lens after connecting and wiring the heater-side harness and the power-side harness. Moreover, it is simpler than the process of connecting and wiring the heater side harness and the power source side harness in the lamp chamber. Moreover, the vehicular lamp according to the present invention (the invention according to claim 6) can be effectively and optimally set for a vehicle having a cold district specification, for example, by simplifying the assembling process.

  Hereinafter, four examples of embodiments 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.

  FIGS. 1-15 shows Example 1 of the vehicle lamp concerning this invention. Hereinafter, the configuration of the vehicular lamp according to the first embodiment will be described. The vehicular lamp according to the first embodiment is a headlamp 1L, 1R for an automobile that irradiates a predetermined light distribution pattern, for example, a light distribution pattern for passing. The headlamps 1L and 1R are respectively provided on the left and right sides of the front portion of the automobile C as shown in FIG. Hereinafter, the left headlamp 1L will be described. The right headlamp 1R is substantially opposite to the left and right headlamp 1L.

  As shown in FIGS. 2 and 4, the headlamp 1 </ b> L includes five lamp units 2, a lamp housing 3, a lamp lens 4, a line heater 5, and a power feeding unit 6. A lamp chamber 7 is defined by the lamp housing 3 and the lamp lens 4. In the lamp chamber 7, the five lamp units 2 are arranged in two upper and lower stages (in this example, three in the upper stage and two in the lower stage).

  The lamp unit 2 constitutes a light irradiation unit that irradiates light to the outside through the lamp lens 4. The lamp unit 2 irradiates (radiates and emits) a predetermined light distribution pattern, in this example, a light distribution pattern for passing. As shown in FIG. 3, the lamp unit 2 is a projector type and has a unit structure. The lamp unit 2 includes an upper reflector 8 and a lower reflector 9, a reflecting surface 10 and a shade 11, a semiconductor light source 12, a projection lens (convex lens, condenser lens) 13, and a heat sink member 14. ing.

  As shown in FIG. 2, the lamp unit 2 is attached to the lamp housing 3 via a holder member 15. The lamp housing 3 is provided with a heat sink member 16. The heat sink member 16 on the lamp housing 3 side and the heat sink member 14 on the lamp unit 2 side are connected via the holder member 15 and the lamp housing 3.

  As the semiconductor-type light source 12, for example, a self-luminous semiconductor-type light source (LED in this embodiment 1) such as LED and EL (organic EL) is used. For this reason, although heat is generated in the semiconductor light source 12 itself, almost no heat is generated in the light from the semiconductor light source 12. As a result, snow, ice, or cloudiness tends to adhere to the lamp lens 4.

  The lamp lens 4 is a substantially transparent lens, and is a so-called outer cover (outer lens). In this example, the lamp lens 4 is molded from a synthetic resin such as PC (polycarbonate). Further, as shown in FIG. 2, the lamp lens 4 is slanted (inclined) from the rear to the front in the longitudinal section (vertical section) from the top to the bottom. Further, the lamp lens 4 has a concave cross section, and is integrated with a front part (or front part) 33 through which light emitted from the lamp unit 2 passes, and from the entire periphery from the front part 33 to the rear. And a side wall portion 34 extending to the wall. A corner portion is formed between the front portion 33 and the side wall portion 34. When the material of the lamp lens 4 is PC, the heat resistant temperature of the lamp lens 4 is about 130 ° C.

  The line heater 5 is a transfer type line heater, and is provided on the inner surface of the front portion 33 of the lamp lens 4 by transfer. As shown in FIGS. 5, 6, and 14, the line heater 5 provided by transfer on the inner surface of the front portion 33 of the lamp lens 4 includes a base film 17, an adhesive 18, and a heater conductive material. The conductive paste 19 as a conductive member and a resist 20 are included. The line heater 5 is preferably light transmissive.

  The base film 17 is made of a transparent synthetic resin film such as PET (polyethylene terephthalate). The adhesive 18 is provided on one surface of the base film 17.

  On the other surface of the base film 17, the conductive paste 19 is formed in a line pattern. In this example, the line pattern of the conductive paste 19 includes four horizontal lines that are substantially parallel to each other, two vertical lines on the left side, and one vertical line on the right side, as shown in FIG. The line pattern is zigzag continuous from side to side. Two vertical lines from the right side of the top two horizontal lines are continuously formed as terminal portions. The conductive paste 19 is a conductive ink, and in this example, is made of a metal paste such as a silver paste, a gold paste, a copper paste, or an aluminum paste. The conductive paste 19 generates heat due to the electric resistance of the conductive paste when a current is supplied. When the electric resistance value is high, the generated heat amount is low, and when the electric resistance value is low, the generated heat amount is low. high.

  The resist 20 is provided on the other surface of the base film 17 so as to cover the conductive paste 19. The resist 20 electrically insulates the conductive paste 19 and protects it from external impacts. That is, the resist 20 is a surface protective coat of the conductive paste 19. In this example, the resist 20 is made of urethane or acrylic adhesive.

  At least one of the base film 17 and the resist 20 is colored. That is, a colored layer is provided on one side or the other side of the base film 17. Alternatively, the base film 17 itself or the resist 20 itself is colored.

  The base film 17 (including the adhesive 18 in this example) is cut into a pattern following the line pattern of the conductive paste 19. The width W of the cut base film 17 is about 0.5 mm in this example, and is substantially the same as the width of the resist 20. Then, as shown in FIG. 14, after the base film 17 is cut, the separator 18 disposed on the resist 20 side is used to apply the adhesive 18 to the inner surface of the front portion 33 of the lamp lens 4. Then, the conductive paste 19 having a line pattern is transferred onto the inner surface of the front portion 33 of the lamp lens 4. Thereby, the line heater 5 is provided on the inner surface of the front portion 33 of the lamp lens 4 by transfer.

  As shown in FIG. 14, the separator 21 is peeled off from the resist 20 side after the conductive paste 19 having a line pattern is transferred to the inner surface of the front portion 33 of the lamp lens 4. The separator 21 can be mounted with the line heater 5 having a pattern shape following the line pattern of the conductive paste 19, and can be transferred to the inner surface of the front portion 33 of the lamp lens 4. The sheet has a size and shape as much as possible. The separator 21 uses a flexible material, in this example, a rubber-based material such as urethane so that it can follow the curved surface of the inner surface of the front portion 33 of the lamp lens 4.

  As shown in FIGS. 4, 8, and 9, the wire heater 5 is provided with the power feeding unit 6. The power feeding unit 6 supplies current to the wire heater 5. Similarly to the wire heater 5, the power feeding unit 6 is provided on the inner surface (the lamp chamber 7 side) of the front surface portion 33 and the side wall portion 34 of the lamp lens 4. In addition, the power feeding unit 6 is provided at a place where the influence on the design of the lamp lens 4 is small, that is, in the vicinity of a corner between the front portion 33 and the side wall portion 34 of the lamp lens 4. The power feeding unit 6 includes a film 24, a conductive paste 25 as a power feeding conductive member, and a connector 26.

  The film 24 extends from the base film 17 of the line heater 5. Similar to the base film 17, the film 24 is made of a transparent synthetic resin film such as PET (polyethylene terephthalate). The width W1 of the film 24 is about 10 mm in this example with respect to the width W (about 0.5 mm) of the base film 17. Further, the length of the film 24 is such a length as to reach the side wall portion 34 of the lamp lens 4 from the line heater 5. 4, 8, and 9, the left end portion of the film 24 is illustrated on the left side of the line heater 5. The line heater 5 is located substantially on the same line.

  The conductive paste 25 for feeding is formed in a line pattern on one surface of the film 24 and one end thereof is electrically connected to a terminal portion of the conductive paste 19 for heater. The conductive paste 25 for power feeding is a conductive ink, similar to the conductive paste 19 for heaters. In this example, the conductive paste 25 is made of a metal paste such as a silver paste, a gold paste, a copper paste, or an aluminum paste. . The power supply conductive paste 25 is thicker (thicker and wider) than the heater conductive paste 19, and has a smaller electrical resistance than the heater conductive paste 19. At the front end of the film 24, the other end of the conductive paste 25 for power feeding is integrally provided with a wide portion 49 for electrodes or power feeding.

  A resist (not shown) may be provided on one surface of the film 24 so as to cover the conductive paste 25 for power feeding. The resist, like the resist 20, electrically insulates the conductive paste 25 for power supply and protects it from external impacts, that is, the surface of the conductive paste 25 for power supply. It is a protective coat. Like the resist 20, the resist is made of a urethane-based or acrylic adhesive in this example.

  Further, at least one of the film 24 and the resist is colored. That is, a colored layer is provided on one side or the other side of the film 24. Alternatively, the film 24 itself or the resist itself is colored.

  The connector 26 is electrically connected to the wide portion 49 at the other end of the conductive paste 25 for power feeding and is fixed to the tip of the film 24. As shown in FIGS. 10 to 13, the connector 26 includes one base 27 made of an insulating member such as a resin, two male terminals 28 made of a conductive member such as a metal, and 2 as a crimping tool. It is composed of a piece of eyelet 29.

  The base 27 has, for example, a square shape. Ribs 30 are integrally provided on three sides of one surface of the base 27. The male terminal 28 includes a fixed portion, a connecting portion, and a male portion. The eyelet 29 includes a base portion and two caulking portions.

  Hereinafter, a method of assembling the film 24 and the conductive paste 25 of the power feeding unit 6 and the connector 26 will be described. First, the tip of the film 24 is set so that the three sides of the base 27 are surrounded by the ribs 30 so that the conductive paste 25 does not face the base 27. Next, the two fixed portions of the male terminal 28 are set in the wide portions 49 of the two conductive pastes 25. Then, the two crimped portions of the two eyelets 29 are passed through the fixing portions of the base 27, the film 24, the two conductive pastes 25, and the two male terminals 28, and The two crimping portions of the eyelet 29 are crimped. As a result, the two widened portions 49 of the film 24 and the two conductive pastes 25 are crimped between the base 27 and the fixed portions of the two male terminals 28 by the two eyelets 29. Thereby, the connector 26 is fixed to the film 24 of the power feeding unit 6, and the male terminal 28 of the connector 26 is electrically connected to the wide portion 49 of the conductive paste 25 of the power feeding unit 6. Connected.

  A sealant 31 made of silicon, for example, is provided in a range surrounded by the ribs 30 on the three sides of the base 27. The sealing agent 31 covers two fixing portions of the two conductive pastes 25 and the two male terminals 28 and two crimping portions of the two eyelets 29, which are electrical connection portions. Insulates and protects from external impacts. In the case where a resist is provided on one surface of the film 24, a resist is applied to a portion where the fixing portions of the two male terminals 28 are set out of the two conductive pastes 25 which are electrical connection portions. Do not provide.

  The other surface of the base 27 is bonded and fixed to the inner surface of the side wall portion 34 of the lamp lens 4 with an adhesive 32 such as a double-sided tape (double-sided adhesive tape) having sufficient durability. As a result, in the power feeding unit 6, the connector 26 is fixed to the inner surface of the side wall 34 of the lamp lens 4 together with the tip of the film 24. As a result, the power feeding unit 6 is provided on the inner surface of the front surface portion 33 and the side wall portion 34 of the lamp lens 4.

  At this time, as shown in FIGS. 7 and 12, both ends of the film 24 of the power feeding unit 6 are connected to the inner surface of the front part 33 of the lamp lens 4 and the inner surface of the lamp lens 4 via the wire heater 5 and the connector 26. Each of the side walls 34 is fixed to the inner surface. Further, an intermediate portion of the film 24 of the power feeding unit 6 is bent along a corner portion between the front portion 33 and the side wall portion 34 of the lamp lens 4. As a result, the film 24 of the power feeding unit 6 is securely fixed in a state along the corner of the lamp lens 4 by an elastic restoring force (see a solid line arrow A in FIG. 7). As a result, the power feeding unit 6 is securely fixed to the inner surfaces of the front surface part 33 and the side wall part 34 of the lamp lens 4.

  Two heater-side harnesses 35 are electrically connected to the connector 26. That is, two female terminals 36 made of a conductive member, for example, metal, are respectively attached to and electrically connected to one end of the two heater-side harnesses 35. The two female terminals 36 are detachably coupled to the two male terminals 28 of the connector 26, respectively. As a result, the connector 26 and the heater-side harness 35 are electrically connected. 4 and 7, the two male terminals 28 and the two female terminals 36 of the connector 26 are schematically shown.

  A heater-side connector 37 is attached and electrically connected to the other end of the two heater-side harnesses 35. As shown in FIG. 7, the two heater-side harnesses 35 are provided with a waterproof structure provided in the side wall portion 34 of the lamp lens 4, in this example, via a rubber waterproof grommet 38, for example. The lamp chamber 7 is drawn out of the lamp chamber 7. Further, as shown in FIG. 15, the two heater-side harnesses 35 are provided with a waterproof structure provided in the lamp housing 3, in this example, via a rubber waterproof grommet 38, for example, the lamp chamber 7. It may be drawn out of the lamp chamber 7 from the inside.

  In FIG. 7, reference numeral “39” denotes two power supply side harnesses whose one ends are electrically connected to the power supply. A power supply side connector 40 is attached to and electrically connected to the other ends of the two power supply side harnesses 39. The heater side connector 37 is detachably coupled to the power source side connector 40. As a result, the line heater 5 is electrically connected to a power source via the power feeding unit 6.

  The power supply side connector 40 is fixed outside the lamp chamber 7 of the lamp housing 3. As a result, a part of the heater side harness 35, the heater side connector 37, the power source side connector 40, and the power source side harness 39 are located outside the lamp chamber 7 of the lamp housing 3.

  Other vehicle parts (for example, other vehicle lamps, bumpers, decorative parts, etc.) 41 are provided adjacent to the outside of the headlamp 1L of the vehicle lamp according to the first embodiment. A part of the heater-side harness 35 located outside the lamp chamber 7 of the lamp housing 3, the heater-side connector 37, the power-side connector 40, and the power-side harness 39 are the same as those of the vehicular lamp according to the first embodiment. Since it is located between the headlamp 1L and the other vehicle parts 41, it cannot be seen from the outside, and there is no problem in appearance.

  The line heater 5 is connected to a manual switch (not shown) or an automatic switch (not shown) via the power supply unit 6. The manual switch manually turns on / off the current supply to the line heater 5. The automatic switch automatically turns on / off the current supply to the line heater 5.

  The automatic switch includes a control unit such as an ECU and a detection unit such as a temperature sensor or an optical sensor. The detection unit detects the ambient environment of the vehicle C, for example, the temperature outside the vehicle C, the light emitted from the lamp lens 4, and outputs the detection signal to the control unit. The control unit determines whether or not snow, ice, or cloudiness is attached to the lamp lens 4 based on a detection signal from the detection unit, or snow, ice, or cloudy is attached to the lamp lens 4. Judge whether the temperature is about. When the controller determines that the lamp lens 4 has snow, ice, cloudy, or the like, or the temperature of the lamp lens 4 has snow, ice, cloudy, or the like, A current is supplied to the wire heater 5 through the power feeding unit 6. On the other hand, when the control unit determines that the lamp lens 4 is not covered with snow, ice, or cloudy or the temperature is not such that snow, ice, or cloudy is attached to the lamp lens 4, the power supply is performed. The current supply to the wire heater 5 is cut off via the section 6.

  One terminal portion of the wire heater 5 is provided with a temperature control unit (not shown). The temperature control unit controls the heat generation temperature of the conductive paste 19. For example, a PTC thermistor is used as the temperature control unit. This PTC thermistor has a characteristic that its resistance value increases as the temperature rises, and current does not flow when it reaches a predetermined resistance value. For example, when the material of the lamp lens 4 is PC, the heat-resistant temperature of the lamp lens 4 is about 130 ° C. Therefore, when the heat generation temperature of the conductive paste 19 reaches about 60 ° C., the current flows. A PTC thermistor having a resistance characteristic that does not flow is used as the temperature controller.

  Hereinafter, the manufacturing process of the line heater 5 (the power feeding unit 6) to be transferred to the lamp lens 4 of the headlamps 1L and 1R of the vehicle lamp according to the first embodiment, and the line heater 5 to the lamp lens 4 are performed. A transfer process for transferring will be described with reference to FIG. First, the adhesive (adhesive layer) 18 is provided on one surface of the film corresponding to the base film 17, and a release sheet 22 such as a release film or release paper is attached to the adhesive 18 so as to be peeled off. The sheet member 23 is manufactured (see FIG. 14A). The sheet member 23 has such a size that the line heater 5 having a pattern shape following the line pattern of the conductive paste 19 can be formed. Further, the adhesive 18 is not provided on the other surface (lower surface) of the film 24 that extends from the base film 17 in the film 24.

  Next, on the other surface (upper surface) of the base film 17 of the sheet member 23 and one surface (upper surface) of the film 24 extended from the base film 17, the conductive paste 19 for heater and the power supply are provided. The conductive paste 25 is printed by a method such as screen printing or hot stamp printing to form a line pattern (see FIG. 14B).

  Subsequently, the resist (insulating layer / protective film) 20 is printed on the other surface (upper surface) of the base film 17 of the sheet member 23 by a method such as screen printing or hot stamp printing. It is provided so as to cover the paste 19 (see FIG. 14C). At this time, the resist (insulating layer / protective film) is simultaneously printed on one surface (upper surface) of the film 24 by a method such as screen printing or hot stamp printing, so that the conductive paste 25 for feeding is supplied. You may provide so that it may be covered.

  Then, the base film 17 and the adhesive 18 of the sheet member 23 are cut into a pattern following the line pattern of the conductive paste 19 by, for example, punching (see FIG. 14D). That is, a cutter (not shown) is pushed into the base film 17 and the adhesive 18 from the resist 20 side and stopped at the boundary between the adhesive 18 and the release sheet 22, and the base film 17 and the adhesive 18. To cut. In FIG. 14C, a cut line of the base film 17 and the adhesive 18 is indicated by a solid line CL. The cutter is separated from the sheet member 23 and, of the cut base film 17 and the adhesive 18, an excess portion other than a pattern portion following the line pattern of the conductive paste 19 is removed from the release sheet 22. Excluded from. At this time, the film 24 is simultaneously cut into a predetermined width W1 and a predetermined length.

  Thereby, as shown in FIG. 14 (D), the release sheet 22 of the sheet member 23 that has not been cut, the base film 17 that has been cut in a pattern that follows the line pattern of the conductive paste 19, and the The adhesive 18, the conductive paste 19 having a line pattern, and the resist 20 provided in a pattern following the line pattern of the conductive paste 19 are left. In this example, the cut width W of the base film 17 and the adhesive 18 is substantially the same as the width of the resist 20, and the width at which the resist 20 can cover the conductive paste 19, that is, the The resist 20 has a width capable of sealing and electrically insulating the conductive paste 19 and protecting it from external impacts. The cut width of the base film 17 is not limited to the cut width W.

  Then, after the base film 17 and the adhesive 18 of the sheet member 23 are cut in a pattern following the line pattern of the conductive paste 19, the separator 21 is disposed on the resist 20 side (FIG. 14E )reference). As a result, the release sheet 22 of the sheet member 23 that has not been cut, the base film 17 and the adhesive 18 that have been cut in a pattern that follows the line pattern of the conductive paste 19, and the conductive pattern of the line pattern. The conductive paste 19 and the resist 20 provided in a pattern following the line pattern of the conductive paste 19 are placed on the separator 21 with the resist 20 side down. As a result, the line heater 5 (the power feeding unit 6) of the unit is manufactured. The unit includes the line heater 5 composed of the base film 17, the adhesive 18, the conductive paste 19, and the resist 20, and the release sheet 22 of the separator 21 and the sheet member 23. It will be.

  Next, the release sheet 22 of the unit manufactured as described above is peeled off (see FIG. 14F). Then, using the separator 21 disposed on the resist 20 side, the adhesive 18 is adhered to the inner surface of the lamp lens 4, and the conductive paste 19 having a line pattern is applied to the front portion 33 of the lamp lens 4. (See FIG. 14G). Then, the separator 21 is peeled off from the resist 20. As a result, the line heater 5 is transferred onto the inner surface of the front portion 33 of the lamp lens 4 as shown in FIGS.

  The vehicular lamp according to the first embodiment is configured as described above, and the operation thereof will be described below.

  The semiconductor light sources 12 of the five lamp units 2 are turned on. Then, the light from the semiconductor-type light sources 12 of the five lamp units 2 is reflected by the reflecting surface 10 of the upper reflector 8, and a part of the reflected light is cut off by the shade 11 of the lower reflector 9, and the remaining reflections Light passes through the projection lens 13 and the front portion 33 of the lamp lens 4 and is irradiated with a predetermined light distribution pattern having a cut-off line outside, that is, a light distribution pattern for passing. The cut-off line of the light distribution pattern for passing is formed by the edge of the shade 11. In addition, by providing the shade 11 with the reflection surface, it is possible to use the reflection light reflected from the reflection surface 10 and reflected by the reflection surface of the shade 11.

  Here, since the line heater 5 provided for transfer on the front portion 33 of the lamp lens 4 has a linear pattern, when light passes through the front portion 33 of the lamp lens 4, the loss or distribution of light is reduced. The influence of light can be minimized. Moreover, since the lamp unit 2 using the semiconductor-type light source 12 as a light source is used, the width of light emitted from the lamp unit 2 is small. For this reason, the light loss, the influence of light distribution, etc. can be further prevented by passing light having a small width between the linear patterns of the line heater 5.

  And since almost no heat is generated in the light from the semiconductor-type light source 12, snow, ice, or cloudiness tends to adhere to the lamp lens 4. In this case, a current is supplied to the line heater 5 provided by transfer on the front portion 33 of the lamp lens 4 by a manual switch or an automatic switch.

  When a current is supplied to the line heater 5, the line heater 5 generates heat due to the electric resistance of the line heater 5. The heat generated by the wire heater 5 warms the lamp lens 4 and prevents the snow, ice and cloudiness from adhering to the lamp lens 4, or the snow, ice and cloudiness adhering to the lamp lens 4 are melted. Is removed or removed. As a result, loss of light irradiated from the front portion 33 of the lamp lens 4 can be prevented.

  At this time, by melting the snow and ice at the portion corresponding to the conductive paste 19 in the front portion 33 of the lamp lens 4, the melted snow and ice slide on the surface of the front portion 33 of the lamp lens 4. Thus, due to a so-called avalanche phenomenon, the snow and ice adhering to the portion not corresponding to the conductive paste 19 in the front portion 33 of the lamp lens 4 are peeled off from the surface of the front portion 33 of the lamp lens 4 and dropped. As a result, snow, ice and cloudiness adhering to the lamp lens 4 can be reliably removed.

  When the heat generation temperature of the line heater 5 reaches a predetermined temperature during the heat generation action of the line heater 5, the current control to the line heater 5 is controlled by the temperature control action of the temperature control unit, and the heat generation temperature of the line heater 5 is reduced. It is kept near a predetermined temperature. As a result, the resin lamp lens 4 having a relatively low heat-resistant temperature can be protected from overheating.

  It is possible to prevent the snow, ice and cloudiness from adhering to the lamp lens 4, and when the snow, ice and cloudiness adhering to the lamp lens 4 are melted or removed, a manual switch and / or an automatic switch can be used. The current supply to the line heater 5 provided in the lens 4 is cut off.

  The vehicular lamp according to the first embodiment is configured and operated as described above, and the effects thereof will be described below.

  Since the vehicular lamp according to the first embodiment is configured and operated as described above, the lamp lens 4 is separated at a separate position in a state where the line heater 5 and the connector 26 of the power feeding unit 6 are separated from each other. Can be provided respectively. That is, in the vehicular lamp according to the first embodiment, the electrical connection between the wire heater 5 and the connector 26 of the power supply unit 6 is maintained by the film 24 of the power supply unit 6 and the conductive paste 25 as the conductive member for power supply. However, the lamp lenses 4 can be provided at separate positions. As a result, in the vehicular lamp according to the first embodiment, the line heater 5 is provided in the portion of the lamp lens 4 where the light is irradiated, that is, the front portion 33, and the connector 26 of the power feeding unit 6 is inconspicuous in the lamp lens 4. A portion (that is, a portion that is not irradiated with light and does not require the line heater 5), that is, the side wall portion 34 can be provided. As a result, the vehicular lamp according to the first embodiment does not need to be provided with the connector 26 of the power feeding portion 6 on the conspicuous front portion 33 of the lamp lens 4, so that there is no problem in appearance, and the wire heater 5 is replaced with the lamp lens. Since there is no need to provide the inconspicuous side wall portion 4 among the four, there is no problem in terms of manufacturing cost and power consumption.

  Moreover, in the vehicular lamp according to the first embodiment, the film 24 and the conductive paste 25 of the power feeding unit 6 that connect between the wire heater 5 and the connector 26 of the power feeding unit 6 are lighter and thinner than the harness. Therefore, the load on the line heater 5 transferred to the lamp lens 4 is small.

  In addition, in the vehicular lamp according to the first embodiment, the film 24 of the power feeding unit 6 extends from the base film 17 of the wire heater 5, and the tip of the film 24 of the power feeding unit 6 and the connector 26 are connected. It is fixed to the side wall 34 of the lamp lens 4. For this purpose, the vehicular lamp according to the first embodiment is fixed to the front portion 33 of the lamp lens 4 via a line heater 5 in which one of the power feeding portions 6 is transferred to the front portion 33 of the lamp lens 4. In addition, the other end of the power feeding unit 6 is fixed to the side wall 34 of the lamp lens 4 via the tip of the film 24 and the connector 26. As a result, in the vehicular lamp according to the first embodiment, it is not necessary to fix the power feeding unit 6 to the front portion 33 and the side wall 34 of the lamp lens 4 as a whole. And can be fixed securely.

  In particular, the lamp lens 4 is a lamp lens 4 in which a corner is formed between the front surface portion 33 for transferring the line heater 5 and the side wall portion 34 for fixing the connector 26 of the power feeding portion 6. In this case, after the wire heater 5 is transferred to the front portion 33 of the lamp lens 4, the film 24 of the power feeding unit 6 is bent along the corners of the lamp lens 4 and the leading end of the film 24 of the power feeding unit 6. When the connector 26 is fixed to the side wall portion 34 of the lamp lens 4, the power supply portion 6 can be securely fixed along the corner portion of the lamp lens 4 by the elastic restoring force of the film 24 of the power supply portion 6.

  Moreover, in the vehicular lamp according to the first embodiment, since it is not necessary to fix the power feeding unit 6 to the lamp lens 4 throughout, the power feeding unit 6 is transferred after the wire heater 5 is transferred to the front part 33 of the lamp lens 4. The tip of the film 24 and the connector 26 can be fixed to the side wall 34 of the lamp lens 4. For this reason, in the vehicular lamp according to the first embodiment, when the line heater 5 is transferred to the front portion 33 of the lamp lens 4, the film 24 width W1 is wider than the base film 17 width W of the line heater 5. Since it is not necessary to fix the portion 6 to the lamp lens 4 at the same time, the film-like line heater 5 can be reliably and easily transferred to the front portion 33 of the lamp lens 4.

  Further, the vehicular lamp according to the first embodiment fixes the male terminal 28 to the film 24 and electrically connects to the conductive paste 25 by the eyelet 29 as a caulking tool. It can be reliably fixed to the film 24 and can be reliably electrically connected to the conductive paste 25. As a result, the vehicular lamp according to the first embodiment can reliably supply current to the wire heater 5 through the power feeding unit 6 by the connector 26 including the male terminal 28, the eyelet 29 (and the base 27). it can.

  Further, in the vehicular lamp according to the first embodiment, since the connector 26 can be provided at a position away from the wire heater 5, gas is generated from the sealant 31 of the connector 26 by the heat of the line heater 5, and the lamp The lens can be prevented from fogging.

  Moreover, in the vehicular lamp according to the first embodiment, since the connector 26 is composed of the eyelet 29, the male terminal 28, and the (base 27), the surface mount type connector, the connector for the flexible flat cable, the spring pressure, etc. Compared to the type connector and other connectors, the number of parts is small, and the manufacturing cost is low accordingly.

  Furthermore, the vehicular lamp according to the first embodiment draws out the heater-side harness 35 connected to the connector 26 of the power feeding unit 6 from the inside of the lamp chamber 7 to the outside of the lamp chamber 7, and thus the lamp housing 3 and the lamp lens 4. And the heater side harness 35 and the power source side harness 39 can be connected and wired outside the lamp chamber 7. As a result, the vehicular lamp according to the first embodiment is simpler than the process of attaching the lamp housing and the lamp lens 4 after connecting and wiring the heater side harness and the power source side harness. This is simpler than the process of connecting and wiring the side harness and the power source side harness. Moreover, the vehicular lamp according to the first embodiment can be effectively and optimally set for a vehicle having a cold district specification, for example, by simplifying the assembly process.

  FIG. 16 shows Example 2 of a vehicular lamp according to the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 15 denote the same components. Hereinafter, the vehicular lamp according to the second embodiment will be described.

  As shown in FIG. 16, the vehicular lamp according to the second embodiment uses a surface mount type connector 42 as a connector. The surface mount type connector 42 is fixed to one surface of the front end of the film 24 of the power feeding unit 6 and electrically connected to the wide portion 49 of the conductive paste 25 by the conductive adhesive 43 and the sealing agent 44. Yes. After transferring the wire heater 5 to the front portion 33 of the lamp lens 4, the other surface of the film 24 to which the surface mount type connector 42 is fixed is attached to a double-sided tape (double-sided adhesive tape) having sufficient durability. The adhesive 32 is adhered and fixed to the inner surface of the side wall 34 of the lamp lens 4. As a result, the surface mount type connector 42 is bonded and fixed to the inner surface of the side wall 34 of the lamp lens 4.

  Since the vehicular lamp according to the second embodiment is configured as described above, it is possible to achieve substantially the same operational effects as the vehicular lamp according to the first embodiment. In particular, the vehicular lamp according to the second embodiment can reliably supply a current to the wire heater 5 through the power feeding unit 6 by the surface mount type connector 42. In addition, since the vehicular lamp according to the second embodiment can provide the surface mount type connector 42 at a position away from the wire heater 5, the sealant for the surface mount type connector 42 is generated by the heat of the line heater 5. It is possible to prevent gas from being generated from 44 and fogging of the lamp lens.

  FIG. 17 shows a third embodiment of the vehicular lamp according to the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 16 denote the same components. Hereinafter, the vehicular lamp according to the third embodiment will be described.

  The vehicular lamp according to the third embodiment uses a flexible flat cable (FFC) connector 45 as a connector, as shown in FIG. The flexible flat cable connector 45 transfers the wire heater 5 to the front portion 33 of the lamp lens 4, and then inserts it into the leading end of the film 24 of the power feeding unit 6 and the wide portion 49 of the conductive paste 25. And electrically connected to the conductive paste 25. Thereafter, the flexible flat cable connector 45 is bonded and fixed to the inner surface of the side wall 34 of the lamp lens 4 together with the tip of the film 24 by an adhesive 32 such as a double-sided tape (double-sided adhesive tape) having sufficient durability. To do.

  Since the vehicular lamp according to the third embodiment is configured as described above, it is possible to achieve substantially the same operational effects as the vehicular lamp according to the first and second embodiments. In particular, the vehicular lamp according to the third embodiment can reliably supply current to the wire heater 5 through the power feeding unit 6 by the flexible flat cable connector 45. Moreover, in the vehicular lamp according to the third embodiment, after the wire heater 5 is transferred to the front portion 33 of the lamp lens 4, the flexible flat cable connector 45 is attached to the tip of the film 24 of the power feeding portion 6 and the conductive paste 25. Insert and fix. Therefore, in the vehicular lamp according to the third embodiment, when the wire heater 5 is transferred, the flexible flat cable connector 45 is fixed to the base film 17 of the wire heater 5 and the film 24 of the power feeding unit 6. Therefore, the damage to the lamp lens 4 by the connector 45 and the twist of the base film 17 and the film 24 due to the weight of the connector 45 are less likely to occur, and workability is improved.

  FIG. 18 shows Embodiment 4 of a vehicle lamp according to the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 17 denote the same components. Hereinafter, the vehicular lamp according to the fourth embodiment will be described.

  The vehicular lamp according to the fourth embodiment uses a spring pressure type connector 46 as a connector as shown in FIG. A spring 47 is provided on one surface of the spring pressure type connector 46. The spring pressure type connector 46 transfers the wire heater 5 to the front portion 33 of the lamp lens 4, and then a double-sided tape (double-sided adhesive tape) having sufficient durability on one surface of the film 24 of the power feeding unit 6. After the film is bonded and fixed to the inner surface of the side wall portion 34 of the lamp lens 4 with an adhesive 32 such as an adhesive member or the like, the double-sided adhesive tape 48 is used to make the spring 47 elastically contact the other surface of the film 24. It is fixed to the other surface of the tip of 24 and is electrically connected to the wide portion 49 of the conductive paste 25. As a result, the spring pressure type connector 46 is bonded and fixed to the inner surface of the side wall portion 34 of the lamp lens 4.

  Since the vehicular lamp according to the fourth embodiment is configured as described above, it is possible to achieve substantially the same operational effects as the vehicular lamp according to the first, second, and third embodiments. In particular, the vehicular lamp according to the fourth embodiment can reliably supply a current to the wire heater 5 through the power feeding portion 6 by the spring pressure type connector 46. Moreover, the vehicular lamp according to the fourth embodiment transfers the wire heater 5 to the front portion 33 of the lamp lens 4, and then fixes the tip of the film 24 of the power feeding unit 6 to the side wall portion 34 of the lamp lens 4. After that, the spring pressure type connector 46 is fixed to the film 24 of the power feeding unit 6 by the double-sided adhesive tape 48. For this reason, the vehicular lamp according to the fourth embodiment has the base film 17 of the wire heater 5 and the film 24 of the power supply unit 6 on the transfer of the line heater 5 and the fixing of the film 24 of the power supply unit 6. Since the spring pressure type connector 46 is not fixed, the lamp 46 is not easily damaged by the connector 46 and the base film 17 and the film 24 are not twisted due to the weight of the connector 46, and workability is improved.

  Hereinafter, examples other than Examples 1 to 4 will be described. In the first to fourth embodiments, the line heater 5 is provided on the inner surface of the front portion 33 of the lamp lens 4. However, in the present invention, the line heater 5 may be provided on the outer surface or both the inner and outer surfaces of the lamp lens 4.

  In the first to fourth embodiments, the line heater 5 is provided on the inner surface of the front portion 33 of the lamp lens 4. However, in the present invention, at least two heat generating portions, that is, a high temperature heat generating portion and a low temperature heat generating portion may be formed in the wire heater.

  Further, Examples 1 to 4 described above are examples used for the lamp lens 4 of the headlamps 1L and 1R of the automobile C. However, in the present invention, it is used for vehicle lamps other than the headlamps 1L and 1R of the automobile C, for example, lamp lights such as signal lamps such as stop lamps, illumination lamps such as curve lamps, front combination lamps, and rear combination lamps. May be.

  Furthermore, in the first to fourth embodiments, the projector type lamp unit 2 using the semiconductor light source 12 as a light source will be described as a light irradiating unit that irradiates light to the outside through the front portion 33 of the lamp lens 4. Is. However, in the present invention, as the light irradiator, a light irradiator other than the lamp unit 2 described above, for example, a light source is a discharge lamp such as a semiconductor light source or HID, a halogen bulb, or an incandescent bulb, The lamp unit may be a type or direct-light type, or in a projector-type, reflection-type or direct-light type vehicle lamp, a semiconductor-type light source, a discharge lamp such as an HID, a light source of a halogen bulb or an incandescent bulb, and A combination of the light source and the reflecting surface may be used.

BRIEF DESCRIPTION OF THE DRAWINGS It is Example 1 of the vehicle lamp concerning this invention, and is explanatory drawing of the state currently used for the headlamp of a motor vehicle. Similarly, it is a vertical sectional view (longitudinal sectional view) of the headlamp. Similarly, it is a vertical sectional view (longitudinal sectional view) of a lamp unit used in a headlamp. It is a perspective view which similarly shows the lamp lens currently used for the headlamp. Similarly, it is an enlarged view of the V section in FIG. Similarly, it is the VI-VI sectional view taken on the line in FIG. Similarly, it is a horizontal sectional view (transverse sectional view) showing a wiring state between a part of the headlamps, in particular, the power supply unit and the power supply side. Similarly, it is a top view which shows a wire heater and an electric power feeding part. Similarly, it is a top view which shows a wire heater, an electric power feeding part, and a connector. Similarly, it is the XX sectional view taken on the line in FIG. Similarly, it is the XI-XI sectional view taken on the line in FIG. Similarly, it is a horizontal sectional view (transverse sectional view) showing a part of the lamp lens, in particular, a power feeding portion. Similarly, it is a XIII arrow line view in FIG. Similarly, it is explanatory drawing which shows the manufacturing process of the line heater transferred to a lamp lens, and the transfer process of transferring a line heater to a lamp lens. Similarly, it is a horizontal sectional view (transverse sectional view) showing a modification of the wiring state of a part of the headlamp, in particular, the power supply unit and the power supply side. It is explanatory drawing which shows the electric power feeding part which shows Example 2 of the vehicle lamp concerning this invention, and a surface mount type connector. It is explanatory drawing which shows the electric power feeding part which shows Example 3 of the vehicle lamp concerning this invention, and the connector for flexible flat cables. It is explanatory drawing which shows the electric power feeding part which shows Example 4 of the vehicle lamp concerning this invention, and a spring pressure type connector.

Explanation of symbols

C Automobile CL Cut location W Base film width W1 Film width 1L, 1R Headlamp (vehicle lamp)
DESCRIPTION OF SYMBOLS 2 Lamp unit 3 Lamp housing 4 Lamp lens 5 Wire heater 6 Feeding part 7 Lamp chamber 8 Upper reflector 9 Lower reflector 10 Reflecting surface 11 Shade 12 Semiconductor type light source (LED)
13 Projection lens 14 Heat sink member 15 Holder member 16 Heat sink member 17 Base film 18 Adhesive 19 Conductive paste (conductive member for heater)
20 Resist 21 Separator 22 Release Sheet 23 Sheet Member 24 Film 25 Conductive Paste (Power Supply Conductive Member)
26 Connector 27 Base 28 Male terminal 29 Eyelet (Casting tool)
30 Rib 31 Sealant 32 Adhesive 33 Front Part 34 Side Wall 35 Heater Side Harness 36 Female Terminal 37 Heater Side Connector 38 Waterproof Grommet 39 Power Supply Side Harness 40 Power Supply Side Connector 41 Vehicle Parts 42 Surface Mount Type Connector 43 Conductivity Adhesive 44 Sealant 45 Flexible flat cable connector 46 Spring pressure type connector 47 Spring 48 Double-sided adhesive tape 49 Wide part

Claims (6)

In a vehicular lamp where the lamp lens has a snow melting structure,
A lamp housing defining the lamp chamber and the lamp lens;
A light irradiating unit disposed in the lamp chamber and irradiating light to the outside through the lamp lens;
A wire heater provided by transfer to the lamp lens;
A power feeding section for supplying a current to the wire heater;
With
The wire heater has a base film, an adhesive provided on one surface of the base film, and a conductive film for a heater that is formed in a line pattern on the other surface of the base film and generates heat when supplied with current. And a resist provided to cover the heater conductive member on the other surface of the base film, and at least the base film follows the line pattern of the heater conductive member A transfer type line heater that is cut into a pattern, and that adheres the adhesive to the lamp lens and transfers the heater conductive member of the line pattern to the lamp lens;
The power supply section includes a film extending from the base film, and a conductive film for power supply which is formed in a line pattern on one surface of the film and one end of which is electrically connected to the conductive member for heater. A member, and a connector that is electrically connected to the other end of the power supply conductive member and is fixed to the lamp lens together with the tip of the film.
A vehicular lamp characterized by the above.   The said connector is comprised from the terminal and the crimping tool which fixes the said terminal to the said film, and is electrically connected to the said electroconductive member for electric power feeding, The Claim 1 characterized by the above-mentioned. Vehicle lamp.   The connector is a surface mount type connector that is fixed to the film and electrically connected to the conductive member for power feeding by a conductive adhesive and a sealing agent. The vehicle lamp as described.   The vehicular lamp according to claim 1, wherein the connector is a flexible flat cable connector fixed to the film and electrically connected to the power supply conductive member by insertion.   2. The vehicular lamp according to claim 1, wherein the connector is a spring pressure type connector fixed to the film and electrically connected to the power supply conductive member by a double-sided adhesive tape. . The line heater and the power feeding unit are provided on the lamp chamber side of the lamp lens,
A harness on the heater side is electrically connected to the connector,
The heater-side harness is drawn out of the lamp chamber from the lamp chamber,
The vehicular lamp according to any one of claims 1 to 5, wherein the vehicular lamp is provided.

Images