JP5052323B2 - Manufacturing method of vehicular lamp - Google Patents

Description

  According to the present invention, a vehicular lamp housing is formed of a resin material, and the first concave portion, the convex portion, and the second concave portion are formed adjacent to each other in the left-right direction on the front side surface of the vehicle lamp housing. The present invention relates to a method for manufacturing a vehicular lamp in which a flexible substrate is bent and temporarily fixed along a portion and a second recess.

  In particular, the present invention provides a vehicular lamp that can be temporarily fixed by bending a flexible substrate along the first concave portion, the convex portion, and the second concave portion of the front side surface of the vehicular lamp housing without using a double-sided tape. It relates to a manufacturing method.

  Conventionally, a vehicular lamp using a flexible substrate is known. As an example of this kind of vehicle lamp, there exists what was described in Unexamined-Japanese-Patent No. 2004-103993, for example. In the vehicular lamp described in FIG. 2 of Japanese Patent Application Laid-Open No. 2004-103993, the flexible substrate is bent and fixed to the convex portion of the vehicle body. On the other hand, Japanese Patent Application Laid-Open No. 2004-103993 does not describe details of a method for fixing a flexible substrate.

  Japanese Patent Laid-Open No. 2005-26561 describes a method for temporarily fixing a flexible substrate. Specifically, in the invention described in Japanese Patent Laid-Open No. 2005-26561, the flexible substrate is temporarily fixed with a double-sided tape. Furthermore, in the invention described in Japanese Patent Application Laid-Open No. 2005-26561, the lead formed on the flexible substrate and the electrode formed on the electronic device are soldered in a state where the flexible substrate is temporarily fixed by the double-sided tape. Joined by.

JP 2004-103993 A JP 2005-26561 A

  The present invention is a method for manufacturing a vehicular lamp that can be temporarily fixed by bending a flexible substrate along the first concave portion, the convex portion, and the second concave portion on the front side surface of the vehicular lamp housing without using a double-sided tape. The purpose is to provide.

According to the first aspect of the present invention, the vehicular lamp housing is formed of a resin material, and the first concave portion, the convex portion, and the second concave portion are formed adjacent to each other in the left-right direction and formed on the front side surface of the vehicle lamp housing. In the method for manufacturing a vehicular lamp, the flexible substrate is bent along the first concave portion, the convex portion, and the second concave portion, and the wall portion for abutting the left end portion of the flexible substrate is provided on the surface of the first concave portion. A first hole is formed in the flexible board, and a first boss part to be fitted to the first hole is formed to extend from the surface of the first recess to the left front side. as parts and the distance between the first hole of the left edge of the flexible substrate is longer than the linear distance between the left edge of the wall portion and the first boss portion of the vehicular lamp housing, flexible Substrate and vehicle lamp housing The flexible board is fitted with the first hole of the flexible board and the first boss part of the vehicle lamp housing, while the left end of the flexible board is abutted against the wall part of the vehicle lamp housing. The left side portion is temporarily fixed to the first concave portion on the front side surface of the vehicle lamp housing, the second hole is formed in the flexible substrate, and the second boss portion for fitting with the second hole is provided on the vehicle lamp housing. It is formed extending from the surface of the convex part on the front side to the front side, and once the second hole of the flexible board and the second boss part of the vehicle lamp housing are fitted together, the curved flexible board is flattened. Due to the spring property of the flexible board to be returned, the right edge of the second hole of the flexible board and the right edge of the second boss of the vehicle lamp housing are engaged. The flexible board and the vehicle lamp housing are formed so that the two holes are not separated from the second boss part of the vehicle lamp housing, and the second hole of the flexible board and the second boss part of the vehicle lamp housing are fitted. As a result, the central portion of the flexible board is temporarily fixed to the convex portion on the front side surface of the vehicle lamp housing, and the engaging portion located on the front side of the second concave portion on the front side surface of the vehicle lamp housing faces upward. By extending the lower end portion of the flexible substrate between the engagement portion and the surface of the second recess on the front side surface of the vehicle lamp housing, the right side portion of the flexible substrate is inserted into the front side surface of the vehicle lamp housing. Are temporarily fixed to the second recess, terminals are formed on each of the flexible substrate and the vehicle lamp housing, and the first boss and the second boss are heat staked. Both provide a method of manufacturing a vehicular lamp characterized by soldering a terminal of a flexible board and a terminal of a vehicular lamp housing.

According to the second aspect of the present invention, the vehicle lamp housing is formed of a resin material, and the first concave portion, the convex portion, and the second concave portion are formed adjacent to each other in the left-right direction and formed on the front side surface of the vehicle lamp housing. In the method for manufacturing a vehicular lamp, the flexible substrate is bent along the first concave portion, the convex portion, and the second concave portion, and the wall portion for abutting the left end portion of the flexible substrate is provided on the surface of the first concave portion. A first hole is formed in the flexible board, and a first boss part to be fitted to the first hole is formed to extend from the surface of the first recess to the left front side. as parts and the distance between the first hole of the left edge of the flexible substrate is longer than the linear distance between the left edge of the wall portion and the first boss portion of the vehicular lamp housing, flexible Substrate and vehicle lamp housing The flexible board is fitted with the first hole of the flexible board and the first boss part of the vehicle lamp housing, while the left end of the flexible board is abutted against the wall part of the vehicle lamp housing. The left side portion is temporarily fixed to the first concave portion on the front side surface of the vehicle lamp housing, the second hole is formed in the flexible substrate, and the second boss portion for fitting with the second hole is provided on the vehicle lamp housing. It is formed extending from the surface of the convex part on the front side to the front side, and once the second hole of the flexible board and the second boss part of the vehicle lamp housing are fitted together, the curved flexible board is flattened. Due to the spring property of the flexible board to be returned, the right edge of the second hole of the flexible board and the right edge of the second boss of the vehicle lamp housing are engaged. The flexible board and the vehicle lamp housing are formed so that the two holes are not separated from the second boss part of the vehicle lamp housing, and the second hole of the flexible board and the second boss part of the vehicle lamp housing are fitted. As a result, the central portion of the flexible substrate is temporarily fixed to the convex portion on the front side surface of the vehicle lamp housing, and the engaging portion located on the front side of the second concave portion on the front side surface of the vehicle lamp housing faces downward. The right side portion of the flexible board is inserted into the front side of the vehicle lamp housing by inserting the upper end of the flexible board between the engagement portion and the surface of the second recess on the front side of the vehicle lamp housing. Are temporarily fixed to the second recess, terminals are formed on each of the flexible substrate and the vehicle lamp housing, and the first boss and the second boss are heat staked. Both provide a method of manufacturing a vehicular lamp characterized by soldering a terminal of a flexible board and a terminal of a vehicular lamp housing.

According to the invention described in claim 3, the vehicle lamp housing is formed of a resin material, and the first concave portion, the convex portion, and the second concave portion are formed adjacent to each other in the left-right direction and formed on the front side surface of the vehicle lamp housing. In the manufacturing method of a vehicular lamp that is temporarily fixed by bending the flexible substrate along the first concave portion, the convex portion, and the second concave portion, a wall portion for abutting the right end portion of the flexible substrate is provided on the surface of the first concave portion. A first hole is formed in the flexible board, a first boss part for fitting with the first hole is formed to extend from the surface of the first recess to the right front side, and the right end of the flexible board is formed. as distance between the parts and the first hole of the right edge of the flexible substrate is longer than the linear distance between the right edge of the wall portion and the first boss portion of the vehicular lamp housing, flexible Substrate and vehicle lamp housing The right end portion of the flexible substrate is abutted against the wall portion of the vehicle lamp housing, and the first hole of the flexible substrate and the first boss portion of the vehicle lamp housing are fitted to each other. The right side portion is temporarily fixed to the first concave portion on the front side surface of the vehicle lamp housing, the second hole is formed in the flexible substrate, and the second boss portion for fitting with the second hole is provided on the vehicle lamp housing. It is formed extending from the surface of the convex part on the front side to the front side, and once the second hole of the flexible board and the second boss part of the vehicle lamp housing are fitted together, the curved flexible board is flattened. Due to the spring property of the flexible board to be returned, the left edge of the second hole of the flexible board and the left edge of the second boss of the vehicle lamp housing are engaged, The flexible board and the vehicle lamp housing are formed so that the two holes are not separated from the second boss part of the vehicle lamp housing, and the second hole of the flexible board and the second boss part of the vehicle lamp housing are fitted. As a result, the central portion of the flexible board is temporarily fixed to the convex portion on the front side surface of the vehicle lamp housing, and the engaging portion located on the front side of the second concave portion on the front side surface of the vehicle lamp housing faces upward. The left side portion of the flexible substrate is inserted into the front side surface of the vehicle lamp housing by inserting the lower end portion of the flexible substrate between the surface of the second recess on the front side surface of the vehicle lamp housing and the engaging portion. Are temporarily fixed to the second recess, terminals are formed on each of the flexible substrate and the vehicle lamp housing, and the first boss and the second boss are heat staked. Both provide a method of manufacturing a vehicular lamp characterized by soldering a terminal of a flexible board and a terminal of a vehicular lamp housing.

According to the fourth aspect of the present invention, the vehicle lamp housing is formed of a resin material, and the first concave portion, the convex portion, and the second concave portion are formed adjacent to each other in the left-right direction and formed on the front side surface of the vehicle lamp housing. In the manufacturing method of a vehicular lamp that is temporarily fixed by bending the flexible substrate along the first concave portion, the convex portion, and the second concave portion, a wall portion for abutting the right end portion of the flexible substrate is provided on the surface of the first concave portion. A first hole is formed in the flexible board, a first boss part for fitting with the first hole is formed to extend from the surface of the first recess to the right front side, and the right end of the flexible board is formed. as distance between the parts and the first hole of the right edge of the flexible substrate is longer than the linear distance between the right edge of the wall portion and the first boss portion of the vehicular lamp housing, flexible Substrate and vehicle lamp housing The right end portion of the flexible substrate is abutted against the wall portion of the vehicle lamp housing, and the first hole of the flexible substrate and the first boss portion of the vehicle lamp housing are fitted to each other. The right side portion is temporarily fixed to the first concave portion on the front side surface of the vehicle lamp housing, the second hole is formed in the flexible substrate, and the second boss portion for fitting with the second hole is provided on the vehicle lamp housing. It is formed extending from the surface of the convex part on the front side to the front side, and once the second hole of the flexible board and the second boss part of the vehicle lamp housing are fitted together, the curved flexible board is flattened. Due to the spring property of the flexible board to be returned, the left edge of the second hole of the flexible board and the left edge of the second boss of the vehicle lamp housing are engaged, The flexible board and the vehicle lamp housing are formed so that the two holes are not separated from the second boss part of the vehicle lamp housing, and the second hole of the flexible board and the second boss part of the vehicle lamp housing are fitted. As a result, the central portion of the flexible substrate is temporarily fixed to the convex portion on the front side surface of the vehicle lamp housing, and the engaging portion located on the front side of the second concave portion on the front side surface of the vehicle lamp housing faces downward. The left side portion of the flexible substrate is inserted into the front side surface of the vehicle lamp housing by inserting the upper end portion of the flexible substrate between the engaging portion and the surface of the second recess on the front side surface of the vehicle lamp housing. Are temporarily fixed to the second recess, terminals are formed on each of the flexible substrate and the vehicle lamp housing, and the first boss and the second boss are heat staked. Both provide a method of manufacturing a vehicular lamp characterized by soldering a terminal of a flexible board and a terminal of a vehicular lamp housing.

  In the vehicle lamp manufacturing method according to the first aspect, the vehicle lamp housing is formed of a resin material. Specifically, the first concave portion, the convex portion, and the second concave portion are formed on the front side surface of the vehicle lamp housing adjacent to each other in the left-right direction.

  Further, in the vehicle lamp manufacturing method according to the first aspect, the wall portion for abutting the left end portion of the flexible substrate extends from the surface of the first recess to the front side. A first hole is formed in the flexible substrate. Furthermore, the 1st boss | hub part for fitting with a 1st hole is formed extending from the surface of a 1st recessed part to the left front side.

In particular, in the manufacturing method of the vehicle lamp according to claim 1, distance between the first hole of the left edge of the left end portion and the flexible substrate of the flexible substrate, and the wall portion of the vehicle lamp housing The flexible board and the vehicle lamp housing are formed so as to be longer than the linear distance from the left edge portion of the first boss portion.

  Therefore, in the vehicle lamp manufacturing method according to the first aspect, the left end portion of the flexible board is abutted against the wall of the vehicle lamp housing, and the first hole of the flexible board and the first boss of the vehicle lamp housing. When the portion is fitted, the flexible substrate that is bent is caused to return to a flat shape by the spring property of the flexible substrate, so that the left side portion of the flexible substrate is against the first recess on the front side of the vehicle lamp housing. Temporarily fixed.

  In other words, according to the method for manufacturing a vehicular lamp according to claim 1, there is no need to use a double-sided tape as in the method for temporarily fixing a flexible substrate described in, for example, Japanese Patent Application Laid-Open No. 2005-26561. The portion can be temporarily fixed to the first concave portion on the front side surface of the vehicle lamp housing.

  Furthermore, in the vehicle lamp manufacturing method according to the first aspect, the second hole is formed in the flexible substrate. Moreover, the 2nd boss | hub part for fitting with a 2nd hole is extended and formed in the front side from the surface of the convex part of the front side surface of a vehicle lamp housing.

  Specifically, in the method for manufacturing a vehicular lamp according to claim 1, once the second hole of the flexible board and the second boss portion of the vehicular lamp housing are fitted together, the curved flexible board is formed. The right edge of the second hole of the flexible board and the right edge of the second boss part of the vehicle lamp housing are engaged by the spring property of the flexible board trying to return to the flat shape, and the second hole of the flexible board The flexible substrate and the vehicle lamp housing are formed so that the second boss portion of the vehicle lamp housing is not separated.

  Therefore, in the vehicle lamp manufacturing method according to claim 1, the central portion of the flexible board is made to be a vehicle lamp by fitting the second hole of the flexible board and the second boss part of the vehicle lamp housing. Temporarily fixed to the convex portion on the front side surface of the housing.

  In other words, according to the method for manufacturing a vehicular lamp according to claim 1, there is no need to use a double-sided tape as in the temporary fixing method of the flexible substrate described in, for example, Japanese Patent Application Laid-Open No. 2005-26561. The portion can be temporarily fixed to the convex portion on the front side surface of the vehicle lamp housing.

  Furthermore, in the method for manufacturing the vehicular lamp according to the first aspect, the engaging portion located on the front side of the second concave portion on the front side surface of the vehicular lamp housing is formed to extend upward.

  Therefore, in the vehicle lamp manufacturing method according to claim 1, the flexible substrate is inserted by inserting the lower end portion of the flexible substrate between the surface of the second recess on the front side surface of the vehicle lamp housing and the engaging portion. Is temporarily fixed to the second concave portion on the front side surface of the vehicle lamp housing.

  In other words, according to the method for manufacturing a vehicular lamp according to claim 1, there is no need to use a double-sided tape as in the method for temporarily fixing a flexible substrate described in, for example, Japanese Patent Application Laid-Open No. 2005-26561. The portion can be temporarily fixed to the second concave portion on the front side surface of the vehicle lamp housing.

  That is, according to the method for manufacturing a vehicular lamp according to claim 1, the flexible substrate is curved along the first concave portion, the convex portion, and the second concave portion on the front side surface of the vehicular lamp housing without using a double-sided tape. Can be temporarily fixed.

  Furthermore, in the method for manufacturing the vehicular lamp according to the first aspect, the terminal is formed on each of the flexible substrate and the vehicular lamp housing. In addition, the first and second bosses are caulked with heat, and the terminals of the flexible board and the terminals of the vehicle lamp housing are soldered, so that the flexible board is completely attached to the front side of the vehicle lamp housing. Fixed to.

  Specifically, in the vehicle lamp manufacturing method according to claim 1, the flexible substrate is temporarily fixed along the first concave portion, the convex portion, and the second concave portion on the front side surface of the vehicle lamp housing. It is not necessary to fix the flexible substrate by the flexible substrate fixing jig when the first boss portion and the second boss portion are heat caulked and when the terminal of the flexible substrate and the terminal of the vehicle lamp housing are soldered.

  Furthermore, in the vehicle lamp manufacturing method according to claim 1, preferably, the direction in which the vehicle lamp housing is removed from the molding die for forming the vehicle lamp housing is in the front-rear direction of the vehicle lamp housing. Is set. That is, in the vehicle lamp manufacturing method according to the first aspect, the first boss portion and the engaging portion constitute an undercut.

  In other words, according to the method for manufacturing the vehicular lamp according to the first aspect, the front side surface of the vehicular lamp housing is suppressed while the portions constituting the undercut are limited to only the first boss portion and the engaging portion. The left portion, the central portion, and the right portion of the flexible substrate can be temporarily fixed to the three portions of the first concave portion, the convex portion, and the second concave portion.

  In the vehicle lamp manufacturing method according to the second aspect, the vehicle lamp housing is formed of a resin material. Specifically, the first concave portion, the convex portion, and the second concave portion are formed on the front side surface of the vehicle lamp housing adjacent to each other in the left-right direction.

  Furthermore, in the vehicle lamp manufacturing method according to the second aspect, the wall portion for abutting the left end portion of the flexible substrate is formed to extend from the surface of the first recess to the front side. A first hole is formed in the flexible substrate. Furthermore, the 1st boss | hub part for fitting with a 1st hole is formed extending from the surface of a 1st recessed part to the left front side.

In particular, in the manufacturing method of the vehicle lamp according to claim 2, distance between the first hole of the left edge of the left end portion and the flexible substrate of the flexible substrate, and the wall portion of the vehicle lamp housing The flexible board and the vehicle lamp housing are formed so as to be longer than the linear distance from the left edge portion of the first boss portion.

  Therefore, in the vehicle lamp manufacturing method according to claim 2, the left end portion of the flexible substrate is abutted against the wall portion of the vehicle lamp housing, and the first hole of the flexible substrate and the first boss of the vehicle lamp housing. When the portion is fitted, the flexible substrate that is bent is caused to return to a flat shape by the spring property of the flexible substrate, so that the left side portion of the flexible substrate is against the first recess on the front side of the vehicle lamp housing. Temporarily fixed.

  In other words, according to the method for manufacturing a vehicular lamp according to claim 2, there is no need to use a double-sided tape as in the method for temporarily fixing a flexible substrate described in, for example, Japanese Patent Laid-Open No. 2005-26561. The portion can be temporarily fixed to the first concave portion on the front side surface of the vehicle lamp housing.

  Furthermore, in the vehicle lamp manufacturing method according to claim 2, the second hole is formed in the flexible substrate. Moreover, the 2nd boss | hub part for fitting with a 2nd hole is extended and formed in the front side from the surface of the convex part of the front side surface of a vehicle lamp housing.

  Specifically, in the method for manufacturing a vehicular lamp according to claim 2, once the second hole of the flexible board and the second boss portion of the vehicular lamp housing are fitted together, the curved flexible board is formed. The right edge of the second hole of the flexible board and the right edge of the second boss part of the vehicle lamp housing are engaged by the spring property of the flexible board trying to return to the flat shape, and the second hole of the flexible board The flexible substrate and the vehicle lamp housing are formed so that the second boss portion of the vehicle lamp housing is not separated.

  Therefore, in the vehicle lamp manufacturing method according to claim 2, the central portion of the flexible board is configured so that the second hole of the flexible board and the second boss part of the vehicle lamp housing are fitted to each other. Temporarily fixed to the convex portion on the front side surface of the housing.

  That is, according to the method for manufacturing a vehicular lamp according to claim 2, there is no need to use a double-sided tape as in the temporary fixing method of the flexible substrate described in, for example, Japanese Patent Application Laid-Open No. 2005-26561. The portion can be temporarily fixed to the convex portion on the front side surface of the vehicle lamp housing.

  Further, in the vehicle lamp manufacturing method according to the second aspect, the engaging portion located on the front side of the second concave portion on the front side surface of the vehicle lamp housing is formed to extend downward.

  Therefore, in the vehicle lamp manufacturing method according to claim 2, the flexible substrate is inserted by inserting the upper end portion of the flexible substrate between the surface of the second recess on the front side surface of the vehicle lamp housing and the engaging portion. Is temporarily fixed to the second concave portion on the front side surface of the vehicle lamp housing.

  That is, according to the method for manufacturing a vehicular lamp according to claim 2, there is no need to use a double-sided tape as in the temporary fixing method of the flexible substrate described in, for example, Japanese Patent Application Laid-Open No. 2005-26561. The portion can be temporarily fixed to the second concave portion on the front side surface of the vehicle lamp housing.

  That is, according to the method for manufacturing a vehicular lamp according to claim 2, the flexible substrate is curved along the first concave portion, the convex portion, and the second concave portion on the front side surface of the vehicular lamp housing without using a double-sided tape. Can be temporarily fixed.

  Further, in the vehicle lamp manufacturing method according to the second aspect, terminals are formed on each of the flexible substrate and the vehicle lamp housing. In addition, the first and second bosses are caulked with heat, and the terminals of the flexible board and the terminals of the vehicle lamp housing are soldered, so that the flexible board is completely attached to the front side of the vehicle lamp housing. Fixed to.

  Specifically, in the vehicle lamp manufacturing method according to claim 2, the flexible substrate is temporarily fixed along the first concave portion, the convex portion, and the second concave portion of the front side surface of the vehicle lamp housing. It is not necessary to fix the flexible substrate by the flexible substrate fixing jig when the first boss portion and the second boss portion are heat caulked and when the terminal of the flexible substrate and the terminal of the vehicle lamp housing are soldered.

  Furthermore, in the vehicle lamp manufacturing method according to claim 2, preferably, the removal direction of the vehicle lamp housing with respect to the molding die for forming the vehicle lamp housing is in the longitudinal direction of the vehicle lamp housing. Is set. That is, in the method for manufacturing a vehicular lamp according to claim 2, the first boss portion and the engaging portion constitute an undercut.

  In other words, according to the method for manufacturing a vehicular lamp according to claim 2, the front side surface of the vehicular lamp housing is controlled while suppressing the portion constituting the undercut to only two places, the first boss portion and the engaging portion. The left portion, the central portion, and the right portion of the flexible substrate can be temporarily fixed to the three portions of the first concave portion, the convex portion, and the second concave portion.

  In the vehicle lamp manufacturing method according to the third aspect, the vehicle lamp housing is formed of a resin material. Specifically, the first concave portion, the convex portion, and the second concave portion are formed on the front side surface of the vehicle lamp housing adjacent to each other in the left-right direction.

  Furthermore, in the method for manufacturing the vehicular lamp according to the third aspect, the wall portion for abutting the right end portion of the flexible substrate is formed to extend from the surface of the first recess to the front side. A first hole is formed in the flexible substrate. Furthermore, the 1st boss | hub part for fitting with a 1st hole is formed extending from the surface of a 1st recessed part to the front right side.

In particular, in the manufacturing method of the vehicle lamp according to claim 3, distance between the right edge of the first hole of the right end portion and the flexible substrate of the flexible substrate, and the wall portion of the vehicle lamp housing The flexible substrate and the vehicle lamp housing are formed so as to be longer than the linear distance between the right edge portion of the first boss portion.

  Therefore, in the vehicle lamp manufacturing method according to claim 3, the right end portion of the flexible board is abutted against the wall portion of the vehicle lamp housing, and the first hole of the flexible board and the first boss of the vehicle lamp housing. When the portion is fitted, the flexible substrate that is bent is caused to return to a flat shape by the spring property of the flexible substrate, so that the right side portion of the flexible substrate is against the first recess on the front side of the vehicle lamp housing. Temporarily fixed.

  That is, according to the method for manufacturing a vehicular lamp according to the third aspect, there is no need to use a double-sided tape as in the method for temporarily fixing the flexible substrate described in JP 2005-26561 A, for example. The portion can be temporarily fixed to the first concave portion on the front side surface of the vehicle lamp housing.

  Furthermore, in the vehicle lamp manufacturing method according to claim 3, the second hole is formed in the flexible substrate. Moreover, the 2nd boss | hub part for fitting with a 2nd hole is extended and formed in the front side from the surface of the convex part of the front side surface of a vehicle lamp housing.

  Specifically, in the method for manufacturing a vehicular lamp according to claim 3, once the second hole of the flexible board and the second boss portion of the vehicular lamp housing are fitted together, the curved flexible board is formed. Due to the spring property of the flexible board to return to the flat shape, the left edge portion of the second hole of the flexible board and the left edge portion of the second boss part of the vehicle lamp housing are engaged with each other. The flexible substrate and the vehicle lamp housing are formed so that the second boss portion of the vehicle lamp housing is not separated.

  Therefore, in the method for manufacturing the vehicular lamp according to claim 3, the central portion of the flexible board is made to fit the second hole of the flexible board and the second boss portion of the vehicular lamp housing. Temporarily fixed to the convex portion on the front side surface of the housing.

  That is, according to the method for manufacturing a vehicular lamp according to claim 3, there is no need to use a double-sided tape as in the method for temporarily fixing a flexible substrate described in, for example, Japanese Patent Application Laid-Open No. 2005-26561. The portion can be temporarily fixed to the convex portion on the front side surface of the vehicle lamp housing.

  Furthermore, in the method for manufacturing the vehicular lamp according to the third aspect, the engaging portion located on the front side of the second concave portion on the front side surface of the vehicular lamp housing is formed to extend upward.

  Therefore, in the vehicle lamp manufacturing method according to claim 3, the flexible substrate is inserted by inserting the lower end portion of the flexible substrate between the surface of the second recess on the front side surface of the vehicle lamp housing and the engaging portion. Is temporarily fixed to the second concave portion on the front side surface of the vehicle lamp housing.

  In other words, according to the method for manufacturing a vehicular lamp according to claim 3, it is not necessary to use a double-sided tape as in the temporary fixing method of the flexible substrate described in, for example, Japanese Patent Application Laid-Open No. 2005-26561. The portion can be temporarily fixed to the second concave portion on the front side surface of the vehicle lamp housing.

  That is, according to the method for manufacturing a vehicular lamp according to claim 3, the flexible substrate is curved along the first concave portion, the convex portion, and the second concave portion on the front side surface of the vehicular lamp housing without using a double-sided tape. Can be temporarily fixed.

  Furthermore, in the method for manufacturing the vehicular lamp according to the third aspect, the terminal is formed on each of the flexible board and the vehicular lamp housing. In addition, the first and second bosses are caulked with heat, and the terminals of the flexible board and the terminals of the vehicle lamp housing are soldered, so that the flexible board is completely attached to the front side of the vehicle lamp housing. Fixed to.

  Specifically, in the vehicle lamp manufacturing method according to claim 3, the flexible substrate is temporarily fixed along the first concave portion, the convex portion, and the second concave portion of the front side surface of the vehicle lamp housing. It is not necessary to fix the flexible substrate by the flexible substrate fixing jig when the first boss portion and the second boss portion are heat caulked and when the terminal of the flexible substrate and the terminal of the vehicle lamp housing are soldered.

  Furthermore, in the vehicle lamp manufacturing method according to the third aspect, preferably, the direction in which the vehicle lamp housing is removed from the molding die for molding the vehicle lamp housing is in the front-rear direction of the vehicle lamp housing. Is set. That is, in the vehicle lamp manufacturing method according to the third aspect, the first boss portion and the engaging portion constitute an undercut.

  In other words, according to the method for manufacturing a vehicular lamp according to the third aspect, the front side surface of the vehicular lamp housing is suppressed while the portions constituting the undercut are limited to only the first boss portion and the engaging portion. The right portion, the center portion, and the left portion of the flexible substrate can be temporarily fixed to the three portions of the first concave portion, the convex portion, and the second concave portion.

  In the vehicle lamp manufacturing method according to the fourth aspect, the vehicle lamp housing is formed of a resin material. Specifically, the first concave portion, the convex portion, and the second concave portion are formed on the front side surface of the vehicle lamp housing adjacent to each other in the left-right direction.

  Further, in the vehicle lamp manufacturing method according to the fourth aspect, the wall portion for abutting the right end portion of the flexible substrate is formed to extend from the surface of the first recess to the front side. A first hole is formed in the flexible substrate. Furthermore, the 1st boss | hub part for fitting with a 1st hole is formed extending from the surface of a 1st recessed part to the front right side.

In particular, in the vehicle lamp manufacturing method according to claim 4, distance between the right edge of the first hole of the right end portion and the flexible substrate of the flexible substrate, and the wall portion of the vehicle lamp housing The flexible substrate and the vehicle lamp housing are formed so as to be longer than the linear distance between the right edge portion of the first boss portion.

  Therefore, in the vehicle lamp manufacturing method according to claim 4, the right end portion of the flexible board is abutted against the wall portion of the vehicle lamp housing, and the first hole of the flexible board and the first boss of the vehicle lamp housing. When the portion is fitted, the flexible substrate that is bent is caused to return to a flat shape by the spring property of the flexible substrate, so that the right side portion of the flexible substrate is against the first recess on the front side of the vehicle lamp housing. Temporarily fixed.

  That is, according to the method for manufacturing a vehicular lamp described in claim 4, there is no need to use a double-sided tape as in the flexible substrate temporary fixing method described in Japanese Patent Laid-Open No. 2005-26561, for example. The portion can be temporarily fixed to the first concave portion on the front side surface of the vehicle lamp housing.

  Furthermore, in the vehicle lamp manufacturing method according to the fourth aspect, the second hole is formed in the flexible substrate. Moreover, the 2nd boss | hub part for fitting with a 2nd hole is extended and formed in the front side from the surface of the convex part of the front side surface of a vehicle lamp housing.

  Specifically, in the method for manufacturing a vehicular lamp according to claim 4, once the second hole of the flexible board and the second boss portion of the vehicular lamp housing are fitted together, the curved flexible board is formed. Due to the spring property of the flexible board to return to the flat shape, the left edge portion of the second hole of the flexible board and the left edge portion of the second boss part of the vehicle lamp housing are engaged with each other. The flexible substrate and the vehicle lamp housing are formed so that the second boss portion of the vehicle lamp housing is not separated.

  Therefore, in the vehicle lamp manufacturing method according to claim 4, the central portion of the flexible board is made to be the vehicle lamp by fitting the second hole of the flexible board and the second boss part of the vehicle lamp housing. Temporarily fixed to the convex portion on the front side surface of the housing.

  That is, according to the method for manufacturing a vehicular lamp according to claim 4, there is no need to use a double-sided tape as in the temporary fixing method of the flexible substrate described in, for example, Japanese Patent Application Laid-Open No. 2005-26561. The portion can be temporarily fixed to the convex portion on the front side surface of the vehicle lamp housing.

  Furthermore, in the method for manufacturing the vehicular lamp according to the fourth aspect, the engaging portion located on the front side of the second concave portion on the front side surface of the vehicular lamp housing is formed to extend downward.

  Therefore, in the vehicle lamp manufacturing method according to claim 4, the flexible substrate is inserted by inserting the upper end portion of the flexible substrate between the surface of the second recess on the front side surface of the vehicle lamp housing and the engaging portion. Is temporarily fixed to the second concave portion on the front side surface of the vehicle lamp housing.

  That is, according to the method for manufacturing a vehicular lamp according to the fourth aspect, there is no need to use a double-sided tape as in the temporary fixing method of the flexible substrate described in, for example, Japanese Patent Application Laid-Open No. 2005-26561. The portion can be temporarily fixed to the second concave portion on the front side surface of the vehicle lamp housing.

  That is, according to the vehicle lamp manufacturing method of the fourth aspect, the flexible substrate is curved along the first concave portion, the convex portion, and the second concave portion on the front side surface of the vehicle lamp housing without using a double-sided tape. Can be temporarily fixed.

  Furthermore, in the method for manufacturing the vehicular lamp according to the fourth aspect, terminals are formed on each of the flexible substrate and the vehicular lamp housing. In addition, the first and second bosses are caulked with heat, and the terminals of the flexible board and the terminals of the vehicle lamp housing are soldered, so that the flexible board is completely attached to the front side of the vehicle lamp housing. Fixed to.

  Specifically, in the vehicle lamp manufacturing method according to claim 4, the flexible substrate is temporarily fixed along the first concave portion, the convex portion, and the second concave portion on the front side surface of the vehicle lamp housing. It is not necessary to fix the flexible substrate by the flexible substrate fixing jig when the first boss portion and the second boss portion are heat caulked and when the terminal of the flexible substrate and the terminal of the vehicle lamp housing are soldered.

  Furthermore, in the vehicle lamp manufacturing method according to claim 4, preferably, the direction in which the vehicle lamp housing is removed from the molding die for molding the vehicle lamp housing is in the front-rear direction of the vehicle lamp housing. Is set. In other words, in the vehicle lamp manufacturing method according to the fourth aspect, the first boss portion and the engaging portion constitute an undercut.

  In other words, according to the method for manufacturing a vehicular lamp according to claim 4, the front side surface of the vehicular lamp housing is suppressed while the portions constituting the undercut are limited to only the first boss portion and the engaging portion. The right portion, the center portion, and the left portion of the flexible substrate can be temporarily fixed to the three portions of the first concave portion, the convex portion, and the second concave portion.

  Hereinafter, a first embodiment of a method for manufacturing a vehicular lamp according to the present invention will be described. FIG. 1 is a view showing a state in which a flexible substrate 2 is temporarily fixed to a front side surface 1a of a vehicle lamp housing 1 in the method for manufacturing a vehicle lamp according to the first embodiment. Specifically, FIG. 1A is a front view of the vehicular lamp according to the first embodiment in a state where the flexible substrate 2 is temporarily fixed to the front side surface 1a of the vehicular lamp housing 1, and FIG. FIG. 2 is a cross-sectional view taken along the line AA in FIG.

  In the vehicular lamp of the first embodiment, the vehicular lamp housing 1 is formed of a resin material. Specifically, as shown in FIG. 1B, a recess 1a1, a protrusion 1a2, and a recess 1a3 are formed on the front side surface 1a of the vehicle lamp housing 1 adjacent to each other in the left-right direction.

  In FIG. 1, 2 a indicates the left end portion of the flexible substrate 2, 2 b indicates the left side portion of the flexible substrate 2, 2 c indicates the central portion of the flexible substrate 2, and 2 d indicates the right side of the flexible substrate 2. Shows the part. Reference numerals 2b1, 2b2, 2b3, 2c1, 2c2, 2c3, 2c4, 2c5, 2c6, 2d1, 2d2, 2d3, 2d4, 2d5, 2d6 denote holes formed in the flexible substrate 2. 2e indicates the lower end of the flexible substrate 2, and 2f indicates terminals formed on the flexible substrate 2.

  In FIG. 1, reference numeral 1a1a denotes a wall portion formed to extend from the surface of the recess 1a1 of the front side surface 1a of the vehicular lamp housing 1 to abut against the left end portion 2a of the flexible substrate 2. Reference numerals 1a1b, 1a1c, and 1a1d denote bosses that are formed to extend from the surface of the recess 1a1 of the front side surface 1a of the vehicle lamp housing 1 to the left front side so as to be fitted into the holes 2b1, 2b2, and 2b3 of the flexible substrate 2. Yes. 1a2a, 1a2b, 1a2c, 1a2d, 1a2e, 1a2f are formed from the surface of the convex portion 1a2 of the front side surface 1a of the vehicular lamp housing 1 so as to be fitted to the holes 2c1, 2c2, 2c3, 2c4, 2c5, 2c6 of the flexible substrate 2. The boss | hub part extended and formed in the front side is shown.

  Further, in FIG. 1, 1a3a, 1a3b, 1a3c, 1a3d, 1a3e, and 1a3f are formed on the front side surface 1a of the vehicular lamp housing 1 so as to be fitted with the holes 2d1, 2d2, 2d3, 2d4, 2d5, and 2d6 of the flexible substrate 2. The boss part formed extending from the surface of the recess 1a3 to the front side is shown. Reference numeral 1b denotes an engaging portion formed to extend upward at a position on the front side of the concave portion 1a3 of the front side surface 1a of the vehicle lamp housing 1. Reference numeral 1 c denotes a terminal formed on the vehicle lamp housing 1.

  FIG. 2 is an enlarged cross-sectional view of the concave portion 1a1 of the front side surface 1a of the vehicle lamp housing 1 and the left end portion 2a and the left side portion 2b of the flexible substrate 2 as viewed from below. Specifically, FIG. 2A shows the relationship between the wall portion 1a1a and the boss portion 1a1b of the concave portion 1a1 of the front side surface 1a of the vehicle lamp housing 1, and the hole 2b1 of the left end portion 2a and the left side portion 2b of the flexible substrate 2. 2B shows the relationship between the wall 1a1a and the boss 1a1c of the recess 1a1 of the front side surface 1a of the vehicle lamp housing 1, and the hole 2b2 of the left end 2a and the left side 2b of the flexible substrate 2. FIG.

  In the vehicular lamp of the first embodiment, when the flexible board 2 is temporarily fixed to the front side surface 1a of the vehicular lamp housing 1, first, as shown in FIGS. Left end 2a of the vehicle lamp housing 1 is abutted against the wall portion 1a1a of the vehicle lamp housing 1, and the holes 2b1, 2b2, 2b3 of the left side portion 2b of the flexible substrate 2 and the boss portions 1a1b, 1a1c of the recess 1a1 of the vehicle lamp housing 1 1a1d is fitted.

In particular, in the vehicle lighting device of the first embodiment, as shown in FIG. 2 (A), distance between the left edge 2b1a of the hole 2b1 left end 2a and the flexible substrate 2 of the flexible substrate 2 The flexible substrate 2 and the vehicle lamp housing 1 are formed so that L1 is longer than the linear distance L2 between the wall 1a1a of the vehicle lamp housing 1 and the left edge 1a1b1 of the boss 1a1b.

Further, in the vehicle lighting device of the first embodiment, as shown in FIG. 2 (B), distance L1 between the left edge 2b2a of the hole 2b2 left end 2a and the flexible substrate 2 of the flexible substrate 2 The flexible board 2 and the vehicle lamp housing 1 are formed so as to be longer than the linear distance L2 between the wall 1a1a of the vehicle lamp housing 1 and the left edge 1a1c1 of the boss 1a1c.

  Therefore, in the vehicular lamp of the first embodiment, as shown in FIGS. 2A and 2B, the left end portion 2 a of the flexible substrate 2 is abutted against the wall portion 1 a 1 a of the vehicular lamp housing 1. At the same time, when the hole 2b1 of the flexible board 2 and the boss 1a1b of the vehicle lamp housing 1 are fitted together, and the hole 2b2 of the flexible board 2 and the boss 1a1c of the vehicle lamp housing 1 are fitted together, it is curved. The left edge 2b1a of the hole 2b1 of the flexible board 2 is pressed against the left edge 1a1b1 of the boss 1a1b of the vehicular lamp housing 1 by the springiness of the flexible board 2 in which the crimped flexible board 2 tries to return to a flat shape. In addition, the left edge portion 2b2a of the hole 2b2 of the flexible substrate 2 is the left edge portion 1a1c of the boss portion 1a1c of the vehicle lamp housing 1. Is pressed in, as a result, the left side portion 2b of the flexible substrate 2 is temporarily fixed relative to the recess 1a1 of the front side surface 1a of the vehicle lamp housing 1.

  FIG. 3 is an enlarged cross-sectional view of the convex portion 1a2 of the front side surface 1a of the vehicle lamp housing 1 and the central portion 2c of the flexible substrate 2 as seen from below. Specifically, FIG. 3A is a diagram showing the relationship between the boss 1a2c of the convex portion 1a2 of the front side surface 1a of the vehicle lamp housing 1 and the hole 2c3 of the central portion 2c of the flexible substrate 2. FIG. B) is a view showing the relationship between the boss 1a2d of the convex portion 1a2 of the front side surface 1a of the vehicle lamp housing 1 and the hole 2c4 of the central portion 2c of the flexible substrate 2. FIG.

  In the vehicular lamp according to the first embodiment, when the flexible board 2 is temporarily fixed to the front side surface 1a of the vehicular lamp housing 1, then, as shown in FIGS. The holes 2c1, 2c2, 2c3, 2c4, 2c5, 2c6 of the portion 2b and the bosses 1a2a, 1a2b, 1a2c, 1a2d, 1a2e, 1a2f of the convex portion 1a2 of the vehicular lamp housing 1 are fitted.

  Specifically, in the vehicular lamp according to the first embodiment, as shown in FIG. 3A, once the hole 2c3 of the flexible board 2 and the boss 1a2c of the vehicular lamp housing 1 are fitted together, As shown by the broken line in FIG. 3A, the curved flexible substrate 2 is returned to a flat shape, and the right edge 2c3a of the hole 2c3 of the flexible substrate 2 and the vehicle lamp housing 1 The flexible board 2 and the vehicular lamp housing 1 are formed so that the right edge 1a2c1 of the boss 1a2c is engaged and the hole 2c3 of the flexible board 2 and the boss 1a2c of the vehicular lamp housing 1 are not separated. Has been.

  In the vehicular lamp of the first embodiment, as shown in FIG. 3B, once the hole 2c4 of the flexible board 2 and the boss 1a2d of the vehicular lamp housing 1 are fitted together, the vehicular lamp is bent. 3B, the right edge 2c4a of the hole 2c4 of the flexible board 2 and the boss of the vehicular lamp housing 1 are caused by the springiness of the flexible board 2 that is about to return to a flat shape as indicated by a broken line in FIG. The flexible substrate 2 and the vehicle lamp housing 1 are formed so that the right edge portion 1a2d1 of the portion 1a2d is engaged and the hole 2c4 of the flexible substrate 2 and the boss portion 1a2d of the vehicle lamp housing 1 are not separated. Yes.

  Therefore, in the vehicular lamp of the first embodiment, as shown in FIGS. 3A and 3B, the hole 2c3 of the flexible board 2 and the boss 1a2c of the vehicular lamp housing 1 are fitted together. In addition, when the hole 2c4 of the flexible board 2 and the boss 1a2d of the vehicle lamp housing 1 are fitted together, the flexible board 2 that is bent is flexible due to the spring property of the flexible board 2 that tries to return to a flat shape. The right edge 2c3a of the hole 2c3 of the board 2 and the right edge 1a2c1 of the boss 1a2c of the vehicular lamp housing 1 are engaged, and the right edge 2c4a of the hole 2c4 of the flexible board 2 and the vehicular lamp housing 1 The right edge portion 1a2d1 of the boss portion 1a2d is engaged, and as a result, the central portion 2c of the flexible board 2 is in front of the vehicle lamp housing 1. It is temporarily fixed relative to the convex portion 1a2 of the surface 1a.

  Furthermore, in the vehicular lamp according to the first embodiment, when the flexible board 2 is temporarily fixed to the front side surface 1a of the vehicular lamp housing 1, then, as shown in FIG. The 2d holes 2d1, 2d2, 2d3, 2d4 and the bosses 1a3a, 1a3b, 1a3c, 1a3d of the recess 1a3 of the vehicular lamp housing 1 are fitted. Next, the lower end 2e of the flexible substrate 2 is inserted between the surface of the recess 1a3 on the front side surface 1a of the vehicle lamp housing 1 and the engaging portion 1b, and the right side portion 2d of the flexible substrate 2 has a hole 2d5. 2d6 and the bosses 1a3e and 1a3f of the recess 1a3 of the vehicular lamp housing 1 are fitted, and the terminal 2f of the flexible board 2 and the terminal 1c of the vehicular lamp housing 1 are fitted.

  That is, in the vehicular lamp of the first embodiment, as shown in FIG. 1, the lower end 2e of the flexible board 2 is between the surface of the recess 1a3 on the front side 1a of the vehicular lamp housing 1 and the engaging portion 1b. , The curved flexible substrate 2 cannot return to a flat shape, and as a result, the right side portion 2d of the flexible substrate 2 is in the recess 1a3 of the front side surface 1a of the vehicular lamp housing 1. Is temporarily stopped.

  Thus, the temporary fixing of the left portion 2b, the central portion 2c, and the right portion 2d of the flexible substrate 2 with respect to the concave portion 1a1, the convex portion 1a2, and the concave portion 1a3 of the front side surface 1a of the vehicle lamp housing 1 is completed.

  At the time of manufacturing the vehicular lamp according to the first embodiment, the boss portions 1a1b, 1a1c, 1a1d, 1a2a, 1a2b, 1a2c, 1a2d, 1a2e, 1a2f, 1a3a, 1a3b, 1a3c, 1a3d, 1a3e, 1a3f are then caulked. In addition, the terminal 2 f of the flexible board 2 and the terminal 1 c of the vehicle lamp housing 1 are soldered, and the flexible board 2 is completely fixed to the front side surface 1 a of the vehicle lamp housing 1.

  Specifically, in the vehicular lamp of the first embodiment, as shown in FIG. 1, the flexible substrate 2 is temporarily fixed along the concave portion 1 a 1, the convex portion 1 a 2, and the concave portion 1 a 3 of the front side surface 1 a of the vehicular lamp housing 1. Therefore, the bosses 1a1b, 1a1c, 1a1d, 1a2a, 1a2b, 1a2c, 1a2d, 1a2e, 1a2f, 1a3a, 1a3b, 1a3c, 1a3d, 1a3e, 1a3f and the terminal 2f of the flexible substrate 2 are used. When soldering to the terminal 1c of the vehicular lamp housing 1, it is not necessary to fix the flexible substrate 2 with a flexible substrate fixing jig (not shown).

  Furthermore, in the vehicle lamp manufacturing method according to the first embodiment, the direction in which the vehicle lamp housing 1 is pulled with respect to a molding die (not shown) for molding the vehicle lamp housing 1 is determined by the vehicle lamp housing. 1 in the front-rear direction (vertical direction in FIG. 1B). Therefore, in the method for manufacturing the vehicular lamp of the first embodiment, as shown in FIG. 1, the boss portions 1a2a, 1a2b, 1a2c, 1a2d, 1a2e, 1a2f, 1a3a, 1a3b, 1a3c, 1a3d, 1a3e, 1a3f The boss portions 1a1b, 1a1c, 1a1d and the engaging portion 1b constitute an undercut, whereas the cut is not constituted.

  In other words, according to the method for manufacturing the vehicular lamp of the first embodiment, the vehicular lamp is restricted to the two parts of the boss portions 1a1b, 1a1c, 1a1d and the engaging portion 1b while forming the portion constituting the undercut. The left portion 2b, the central portion 2c, and the right portion 2d of the flexible substrate 2 can be temporarily fixed to the three portions of the concave portion 1a1, the convex portion 1a2, and the concave portion 1a3 on the front side surface 1a of the housing 1.

  Specifically, in the vehicular lamp according to the first embodiment, for example, light emitted from a light emitting element (not shown) such as an LED mounted on the flexible substrate 2 is irradiated on the front side of the flexible substrate 2 (see FIG. 1 (B)) is diffused by a lens cut portion of an outer lens (not shown) and is irradiated in the irradiation direction of the vehicle lamp (upper side in FIG. 1 (B)).

  Hereinafter, a second embodiment of the method for manufacturing a vehicular lamp of the present invention will be described. The vehicular lamp of the second embodiment is configured in substantially the same manner as the vehicular lamp of the first embodiment described above, except for the points described below. Therefore, according to the vehicular lamp of the second embodiment, substantially the same effects as those of the vehicular lamp of the first embodiment described above can be obtained except for the points described below.

  FIG. 4 is a view showing a state in which the flexible substrate 2 is temporarily fixed to the front side surface 1a of the vehicular lamp housing 1 in the vehicular lamp manufacturing method of the second embodiment. Specifically, FIG. 4A is a front view of the vehicular lamp according to the second embodiment in a state where the flexible substrate 2 is temporarily fixed to the front side surface 1a of the vehicular lamp housing 1, and FIG. FIG. 5 is a cross-sectional view taken along line AA in FIG.

  In the vehicular lamp according to the first embodiment, as shown in FIG. 1, an engagement portion 1 b located on the front side of the recess 1 a 3 of the front side surface 1 a of the vehicular lamp housing 1 is formed to extend upward, By inserting the lower end portion 2e of the flexible substrate 2 between the surface of the recess 1a3 on the front side surface 1a of the housing 1 and the engaging portion 1b, the right side portion 2d of the flexible substrate 2 becomes the front side surface 1a of the vehicular lamp housing 1. In the vehicular lamp of the second embodiment, as shown in FIG. 4, the engaging portion is located on the front side of the recess 1 a 3 of the front side surface 1 a of the vehicular lamp housing 1. 1b 'is formed to extend downward, and an upper end portion 2e' of the flexible substrate 2 is inserted between the surface of the recess 1a3 on the front side surface 1a of the vehicle lamp housing 1 and the engaging portion 1b '. Right portion 2d Le substrate 2 is temporarily fixed relative to the recess 1a3 of the front side surface 1a of the vehicle lamp housing 1.

  Hereinafter, a third embodiment of the method for manufacturing the vehicular lamp of the present invention will be described. FIG. 5 is a view showing a state in which the flexible substrate 4 is temporarily fixed to the front side surface 3a of the vehicle lamp housing 3 in the method for manufacturing the vehicle lamp of the third embodiment. Specifically, FIG. 5A is a front view of the vehicular lamp of the third embodiment in a state where the flexible substrate 4 is temporarily fixed to the front side surface 3a of the vehicular lamp housing 3, and FIG. FIG. 6 is a cross-sectional view taken along line AA in FIG.

  In the vehicular lamp of the third embodiment, the vehicular lamp housing 3 is formed of a resin material. Specifically, as shown in FIG. 5B, the recess 3a1, the protrusion 3a2, and the recess 3a3 are formed on the front side surface 3a of the vehicular lamp housing 3 so as to be adjacent to each other in the left-right direction.

  In FIG. 5, 4 a indicates the right end portion of the flexible substrate 4, 4 b indicates the right side portion of the flexible substrate 4, 4 c indicates the center portion of the flexible substrate 4, and 4 d indicates the left side of the flexible substrate 4. Shows the part. Reference numerals 4 b 1, 4 b 2, 4 b 3, 4 c 1, 4 c 2, 4 c 3, 4 c 4, 4 c 5, 4 c 6, 4 d 1, 4 d 2, 4 d 3, 4 d 4, 4 d 5, 4 d 6 denote holes formed in the flexible substrate 4. 4e indicates the lower end of the flexible substrate 4, and 4f indicates a terminal formed on the flexible substrate 4.

  In FIG. 5, 3a1a indicates a wall portion formed to extend from the surface of the recess 3a1 of the front side surface 3a of the vehicle lamp housing 3 to the front side in order to abut the right end portion 4a of the flexible substrate 4. Reference numerals 3a1b, 3a1c, 3a1d denote bosses formed to extend from the surface of the recess 3a1 of the front side surface 3a of the vehicle lamp housing 3 to the right front side so as to be fitted into the holes 4b1, 4b2, 4b3 of the flexible substrate 4. Yes. 3a2a, 3a2b, 3a2c, 3a2d, 3a2e, and 3a2f are fitted from the surface of the convex portion 3a2 of the front side surface 3a of the vehicle lamp housing 3 in order to fit into the holes 4c1, 4c2, 4c3, 4c4, 4c5, and 4c6 of the flexible substrate 4. The boss | hub part extended and formed in the front side is shown.

  Further, in FIG. 5, 3a3a, 3a3b, 3a3c, 3a3d, 3a3e, and 3a3f are formed on the front side surface 3a of the vehicular lamp housing 3 for fitting with the holes 4d1, 4d2, 4d3, 4d4, 4d5, and 4d6 of the flexible substrate 4. The boss part formed extending from the surface of the recess 3a3 to the front side is shown. Reference numeral 3b denotes an engaging portion formed to extend upward to a position on the front side of the recess 3a3 of the front side surface 3a of the vehicle lamp housing 3. Reference numeral 3 c denotes a terminal formed on the vehicle lamp housing 3.

  FIG. 6 is an enlarged cross-sectional view of the concave portion 3a1 of the front side surface 3a of the vehicle lamp housing 3 and the right end portion 4a and the right side portion 4b of the flexible substrate 4 as viewed from below. Specifically, FIG. 6A shows the relationship between the wall 3a1a and the boss 3a1b of the recess 3a1 of the front side surface 3a of the vehicle lamp housing 3, and the hole 4b1 of the right end 4a and the right side 4b of the flexible substrate 4. 6B shows the relationship between the wall 3a1a and the boss 3a1c of the recess 3a1 of the front side surface 3a of the vehicle lamp housing 3 and the holes 4b2 of the right end 4a and the right side 4b of the flexible substrate 4. FIG. FIG.

  In the vehicular lamp of the third embodiment, when the flexible board 4 is temporarily fixed to the front side surface 3a of the vehicular lamp housing 3, first, as shown in FIG. 5 and FIG. The right end portion 4a of the vehicle lamp housing 3 is abutted against the wall portion 3a1a of the vehicle lamp housing 3, and the holes 4b1, 4b2, 4b3 of the right side portion 4b of the flexible substrate 4 and the boss portions 3a1b, 3a1c of the recess 3a1 of the vehicle lamp housing 3 are provided. 3a1d is fitted.

In particular, in the third vehicle lamp embodiment, as shown in FIG. 6 (A), distance between the right edge 4b1a of the hole 4b1 of the right end portion 4a and the flexible substrate 4 of the flexible substrate 4 The flexible substrate 4 and the vehicle lamp housing 3 are formed such that L3 is longer than the linear distance L4 between the wall 3a1a of the vehicle lamp housing 3 and the right edge 3a1b1 of the boss 3a1b.

In the third vehicle lamp embodiment, as shown in FIG. 6 (B), the distance L3 between the right edge 4b2a of the hole 4b2 of the right end portion 4a and the flexible substrate 4 of the flexible substrate 4 The flexible board 4 and the vehicle lamp housing 3 are formed so as to be longer than the linear distance L4 between the wall 3a1a of the vehicle lamp housing 3 and the right edge 3a1c1 of the boss 3a1c.

  Therefore, in the vehicular lamp of the third embodiment, the right end 4a of the flexible substrate 4 is abutted against the wall 3a1a of the vehicular lamp housing 3 as shown in FIGS. 6 (A) and 6 (B). When the hole 4b1 of the flexible board 4 and the boss 3a1b of the vehicle lamp housing 3 are fitted together, and the hole 4b2 of the flexible board 4 and the boss 3a1c of the vehicle lamp housing 3 are fitted together, the curved The right edge 4b1a of the hole 4b1 of the flexible board 4 is pressed against the right edge 3a1b1 of the boss 3a1b of the vehicular lamp housing 3 by the spring property of the flexible board 4 that the crimped flexible board 4 tries to return to a flat shape. In addition, the right edge 4b2a of the hole 4b2 of the flexible substrate 4 is the right edge 3a1c of the boss 3a1c of the vehicle lamp housing 3. Is pressed in, as a result, the right side portion 4b of the flexible substrate 4 is temporarily fixed relative to the recess 3a1 of the front surface 3a of the vehicular lamp housing 3.

  FIG. 7 is an enlarged cross-sectional view of the convex portion 3a2 of the front side surface 3a of the vehicle lamp housing 3 and the central portion 4c of the flexible substrate 4 as viewed from below. Specifically, FIG. 7A is a diagram showing the relationship between the boss 3a2c of the convex portion 3a2 of the front side surface 3a of the vehicle lamp housing 3 and the hole 4c3 of the central portion 4c of the flexible substrate 4. FIG. B) is a view showing the relationship between the boss 3a2d of the convex portion 3a2 of the front side surface 3a of the vehicle lamp housing 3 and the hole 4c4 of the central portion 4c of the flexible substrate 4. FIG.

  In the vehicular lamp according to the third embodiment, when the flexible board 4 is temporarily fixed to the front side surface 3a of the vehicular lamp housing 3, then, as shown in FIGS. The holes 4c1, 4c2, 4c3, 4c4, 4c5, 4c6 of the portion 4b are fitted into the boss portions 3a2a, 3a2b, 3a2c, 3a2d, 3a2e, 3a2f of the convex portion 3a2 of the vehicular lamp housing 3.

  Specifically, in the vehicular lamp of the third embodiment, as shown in FIG. 7A, once the hole 4c3 of the flexible board 4 and the boss 3a2c of the vehicular lamp housing 3 are fitted together, Due to the springiness of the flexible substrate 4 where the curved flexible substrate 4 returns to a flat shape as indicated by a broken line in FIG. 7A, the left edge 4c3a of the hole 4c3 of the flexible substrate 4 and the vehicle lamp housing 3 The flexible board 4 and the vehicle lamp housing 3 are formed so that the left edge part 3a2c1 of the boss part 3a2c is engaged with the hole 4c3 of the flexible board 4 and the boss part 3a2c of the vehicle lamp housing 3 is not separated. Has been.

  Further, in the vehicle lamp of the third embodiment, as shown in FIG. 7B, once the hole 4c4 of the flexible board 4 and the boss portion 3a2d of the vehicle lamp housing 3 are fitted together, the vehicle lamp is bent. 7B, the left edge 4c4a of the hole 4c4 of the flexible substrate 4 and the boss of the vehicular lamp housing 3 are caused by the spring property of the flexible substrate 4 to return to a flat shape as indicated by a broken line in FIG. The flexible substrate 4 and the vehicle lamp housing 3 are formed so that the left edge 3a2d1 of the portion 3a2d is engaged and the hole 4c4 of the flexible substrate 4 and the boss 3a2d of the vehicle lamp housing 3 are not separated. Yes.

  Therefore, in the vehicular lamp of the third embodiment, as shown in FIGS. 7A and 7B, the hole 4c3 of the flexible board 4 and the boss 3a2c of the vehicular lamp housing 3 are fitted together. When the hole 4c4 of the flexible board 4 and the boss 3a2d of the vehicular lamp housing 3 are fitted together, the flexible board 4 that is bent is flexible due to the spring property of the flexible board 4 that tries to return to a flat shape. The left edge portion 4c3a of the hole 4c3 of the substrate 4 and the left edge portion 3a2c1 of the boss portion 3a2c of the vehicle lamp housing 3 engage with each other, and the left edge portion 4c4a of the hole 4c4 of the flexible substrate 4 and the vehicle lamp housing 3 The left edge 3a2d1 of the boss 3a2d is engaged, and as a result, the central portion 4c of the flexible board 4 is in front of the vehicle lamp housing 3. It is temporarily fixed relative to the convex portion 3a2 of the surface 3a.

  Furthermore, in the vehicular lamp of the third embodiment, when the flexible board 4 is temporarily fixed to the front side surface 3a of the vehicular lamp housing 3, as shown in FIG. The holes 4d1, 4d2, 4d3, 4d4 of 4d and the bosses 3a3a, 3a3b, 3a3c, 3a3d of the recess 3a3 of the vehicle lamp housing 3 are fitted. Next, the lower end 4e of the flexible substrate 4 is inserted between the surface of the recess 3a3 on the front side surface 3a of the vehicle lamp housing 3 and the engaging portion 3b, and the holes 4d5 of the left side portion 4d of the flexible substrate 4 are inserted. 4d6 and the bosses 3a3e and 3a3f of the recess 3a3 of the vehicle lamp housing 3 are fitted together, and the terminal 4f of the flexible substrate 4 and the terminal 3c of the vehicle lamp housing 3 are fitted together.

  That is, in the vehicular lamp of the third embodiment, as shown in FIG. 5, the lower end portion 4e of the flexible substrate 4 is located between the surface of the recess 3a3 on the front side surface 3a of the vehicular lamp housing 3 and the engaging portion 3b. , The curved flexible substrate 4 cannot return to a flat shape, and as a result, the left side portion 4d of the flexible substrate 4 is in the recess 3a3 of the front side surface 3a of the vehicular lamp housing 3. Is temporarily stopped.

  Thus, the temporary fixing of the right portion 4b, the central portion 4c, and the left portion 4d of the flexible substrate 4 with respect to the concave portion 3a1, the convex portion 3a2, and the concave portion 3a3 of the front side surface 3a of the vehicle lamp housing 3 is completed.

  At the time of manufacturing the vehicular lamp according to the third embodiment, the boss portions 3a1b, 3a1c, 3a1d, 3a2a, 3a2b, 3a2c, 3a2d, 3a2e, 3a2f, 3a3a, 3a3b, 3a3c, 3a3d, 3a3e, 3a3f are then caulked. At the same time, the terminal 4 f of the flexible board 4 and the terminal 3 c of the vehicle lamp housing 3 are soldered, and the flexible board 4 is completely fixed to the front side surface 3 a of the vehicle lamp housing 3.

  Specifically, in the vehicular lamp of the third embodiment, as shown in FIG. 5, the flexible substrate 4 is temporarily fixed along the recesses 3 a 1, the protrusions 3 a 2, and the recesses 3 a 3 on the front side surface 3 a of the vehicular lamp housing 3. Therefore, when the bosses 3a1b, 3a1c, 3a1d, 3a2a, 3a2b, 3a2c, 3a2d, 3a2e, 3a2f, 3a3a, 3a3b, 3a3c, 3a3d, 3a3e, 3a3f and the terminal 4f of the flexible substrate 4 are used. When soldering the terminal 3c of the vehicle lamp housing 3, it is not necessary to fix the flexible substrate 4 with a flexible substrate fixing jig (not shown).

  Furthermore, in the vehicle lamp manufacturing method of the third embodiment, the direction in which the vehicle lamp housing 3 is pulled out with respect to a molding die (not shown) for molding the vehicle lamp housing 3 is determined by the vehicle lamp housing. 3 in the front-rear direction (vertical direction in FIG. 5B). Therefore, in the vehicle lamp manufacturing method of the third embodiment, as shown in FIG. 5, the boss portions 3a2a, 3a2b, 3a2c, 3a2d, 3a2e, 3a2f, 3a3a, 3a3b, 3a3c, 3a3d, 3a3e, 3a3f The boss portions 3a1b, 3a1c, 3a1d, and the engaging portion 3b constitute an undercut, whereas the cut is not constituted.

  In other words, according to the method for manufacturing the vehicular lamp of the third embodiment, the vehicular lamp is suppressed while the portions constituting the undercut are limited to only two locations of the boss portions 3a1b, 3a1c, 3a1d and the engaging portion 3b. The right portion 4b, the central portion 4c, and the left portion 4d of the flexible substrate 4 can be temporarily fixed to the three portions of the concave portion 3a1, the convex portion 3a2, and the concave portion 3a3 of the front side surface 3a of the housing 3.

  Specifically, in the vehicular lamp of the third embodiment, for example, light emitted from a light emitting element (not shown) such as an LED mounted on the flexible substrate 4 is front side of the flexible substrate 4 (see FIG. It is diffused by a lens cut portion of an outer lens (not shown) arranged on the upper side of 5 (B) and irradiated in the irradiation direction of the vehicular lamp (upper side of FIG. 5B).

  Hereinafter, a fourth embodiment of the method for manufacturing a vehicular lamp of the present invention will be described. The vehicular lamp of the fourth embodiment is configured in substantially the same manner as the vehicular lamp of the third embodiment described above, except for the points described below. Therefore, according to the vehicle lamp of the fourth embodiment, substantially the same effects as those of the vehicle lamp of the third embodiment described above can be obtained except for the points described below.

  FIG. 8 is a view showing a state in which the flexible substrate 4 is temporarily fixed to the front side surface 3a of the vehicle lamp housing 3 in the vehicle lamp manufacturing method of the fourth embodiment. Specifically, FIG. 8A is a front view of the vehicle lamp of the fourth embodiment in a state where the flexible substrate 4 is temporarily fixed to the front side surface 3a of the vehicle lamp housing 3, and FIG. FIG. 9 is a cross-sectional view taken along line AA in FIG.

  In the vehicular lamp of the third embodiment, as shown in FIG. 5, the engaging portion 3 b located on the front side of the recess 3 a 3 of the front side surface 3 a of the vehicular lamp housing 3 is formed to extend upward, and the vehicular lamp By inserting the lower end portion 4e of the flexible substrate 4 between the surface of the recess 3a3 on the front side surface 3a of the housing 3 and the engaging portion 3b, the left side portion 4d of the flexible substrate 4 is moved to the front side surface 3a of the vehicle lamp housing 3. In the vehicular lamp of the fourth embodiment, as shown in FIG. 8, the engaging portion is located on the front side of the recess 3 a 3 of the front side surface 3 a of the vehicular lamp housing 3. 3b 'is formed to extend downward, and the upper end 4e' of the flexible substrate 4 is inserted between the surface of the recess 3a3 on the front side surface 3a of the vehicular lamp housing 3 and the engaging portion 3b '. Left portion 4d Le substrate 4 is temporarily fixed relative to the recess 3a3 of the front surface 3a of the vehicular lamp housing 3.

  In the fifth embodiment, the above-described first to fourth embodiments can be appropriately combined.

  The method for manufacturing a vehicular lamp of the present invention is applicable to a method for manufacturing a vehicular signal lamp such as a door mirror turn lamp.

It is the figure which showed the state by which the flexible substrate 2 was temporarily fixed with respect to the front side 1a of the vehicle lamp housing 1 in the manufacturing method of the vehicle lamp of 1st Embodiment. FIG. 3 is an enlarged cross-sectional view of the concave portion 1a1 of the front side surface 1a of the vehicle lamp housing 1 and the left end portion 2a and the left side portion 2b of the flexible substrate 2 as viewed from below. It is the expanded sectional view which looked at the convex part 1a2 of the front side 1a of the vehicle lamp housing 1, and the center part 2c of the flexible substrate 2 from the lower side. It is the figure which showed the state by which the flexible substrate 2 was temporarily fixed with respect to the front side surface 1a of the vehicle lamp housing 1 in the manufacturing method of the vehicle lamp of 2nd Embodiment. It is the figure which showed the state by which the flexible substrate 4 was temporarily fixed with respect to the front side surface 3a of the vehicle lamp housing 3 in the manufacturing method of the vehicle lamp of 3rd Embodiment. FIG. 4 is an enlarged cross-sectional view of the concave portion 3a1 of the front side surface 3a of the vehicle lamp housing 3 and the right end portion 4a and the right side portion 4b of the flexible substrate 4 as viewed from below. FIG. 4 is an enlarged cross-sectional view of a convex portion 3a2 of a front side surface 3a of a vehicle lamp housing 3 and a central portion 4c of a flexible substrate 4 as viewed from below. It is the figure which showed the state by which the flexible substrate 4 was temporarily fixed with respect to the front side surface 3a of the vehicle lamp housing 3 in the manufacturing method of the vehicle lamp of 4th Embodiment.

Explanation of symbols

1 Vehicle lamp housing 1a Front side 1a1 Recess 1a1a Wall 1a1b, 1a1c, 1a1d Boss 1a2 Protrusion 1a2a, 1a2b, 1a2c, 1a2d, 1a2e, 1a2f Boss 1a3a, 1a3b, 1a3c Part 1b Engagement part 1c Terminal 2 Flexible substrate 2a Left end part 2b Left part 2b1, 2b2, 2b3 Hole 2c Center part 2c1, 2c2, 2c3, 2c4, 2c5, 2c6 Hole 2d Right part 2d1, 2d2, 2d3, 2d4, 2d5 2d6 hole 2e lower end 2f terminal

Claims (4)

The vehicle lamp housing is molded from a resin material,
Forming the first concave portion, the convex portion, and the second concave portion adjacent to each other in the left-right direction on the front side surface of the vehicle lamp housing;
In the manufacturing method of the vehicular lamp that temporarily fixes the flexible substrate along the first concave portion, the convex portion, and the second concave portion,
Forming a wall portion for abutting the left end of the flexible substrate from the surface of the first recess to the front side;
Forming a first hole in the flexible substrate,
Forming a first boss for fitting with the first hole from the surface of the first recess to the left front side;
Distance between the left end and the first hole of the left edge of the flexible substrate of the flexible substrate is longer than the linear distance between the left edge of the wall portion and the first boss portion of the vehicle lamp housing Forming a flexible substrate and a vehicle lamp housing,
The left end portion of the flexible substrate is abutted against the wall portion of the vehicle lamp housing, and the first hole of the flexible substrate and the first boss portion of the vehicle lamp housing are fitted to each other so that the left portion of the flexible substrate is used for the vehicle. Temporarily fix against the first recess on the front side of the lamp housing,
Forming a second hole in the flexible substrate,
A second boss portion for fitting with the second hole is formed to extend from the surface of the convex portion on the front side surface of the vehicle lamp housing to the front side;
Once the second hole of the flexible board and the second boss portion of the vehicle lamp housing are fitted together, the second flexible board is caused by the springiness of the flexible board to return the curved flexible board to a flat shape. Flexible so that the right edge of the hole engages with the right edge of the second boss of the vehicle lamp housing, and the second hole of the flexible board and the second boss of the vehicle lamp housing are not separated. Forming a substrate and a vehicle lamp housing;
By fitting the second hole of the flexible board and the second boss part of the vehicle lamp housing, the central portion of the flexible board is temporarily fixed to the convex part of the front side surface of the vehicle lamp housing,
An engagement portion located on the front side of the second recess on the front side surface of the vehicle lamp housing is formed by extending upward,
By inserting the lower end of the flexible board between the surface of the second recess on the front side of the vehicle lamp housing and the engaging part, the right side portion of the flexible board becomes the second recess on the front side of the vehicle lamp housing. Against it temporarily,
Form terminals on each of the flexible board and the vehicle lamp housing,
A method for manufacturing a vehicular lamp, wherein the first boss portion and the second boss portion are heat caulked, and a terminal of the flexible board and a terminal of the vehicular lamp housing are soldered. The vehicle lamp housing is molded from a resin material,
Forming the first concave portion, the convex portion, and the second concave portion adjacent to each other in the left-right direction on the front side surface of the vehicle lamp housing;
In the manufacturing method of the vehicular lamp that temporarily fixes the flexible substrate along the first concave portion, the convex portion, and the second concave portion,
Forming a wall portion for abutting the left end of the flexible substrate from the surface of the first recess to the front side;
Forming a first hole in the flexible substrate,
Forming a first boss for fitting with the first hole from the surface of the first recess to the left front side;
Distance between the left end and the first hole of the left edge of the flexible substrate of the flexible substrate is longer than the linear distance between the left edge of the wall portion and the first boss portion of the vehicle lamp housing Forming a flexible substrate and a vehicle lamp housing,
The left end portion of the flexible substrate is abutted against the wall portion of the vehicle lamp housing, and the first hole of the flexible substrate and the first boss portion of the vehicle lamp housing are fitted to each other so that the left portion of the flexible substrate is used for the vehicle. Temporarily fix against the first recess on the front side of the lamp housing,
Forming a second hole in the flexible substrate,
A second boss portion for fitting with the second hole is formed to extend from the surface of the convex portion on the front side surface of the vehicle lamp housing to the front side;
Once the second hole of the flexible board and the second boss portion of the vehicle lamp housing are fitted together, the second flexible board is caused by the springiness of the flexible board to return the curved flexible board to a flat shape. Flexible so that the right edge of the hole engages with the right edge of the second boss of the vehicle lamp housing, and the second hole of the flexible board and the second boss of the vehicle lamp housing are not separated. Forming a substrate and a vehicle lamp housing;
By fitting the second hole of the flexible board and the second boss part of the vehicle lamp housing, the central portion of the flexible board is temporarily fixed to the convex part of the front side surface of the vehicle lamp housing,
An engagement portion located on the front side of the second recess on the front side surface of the vehicle lamp housing is formed by extending downward,
By inserting the upper end portion of the flexible substrate between the surface of the second recess on the front side of the vehicle lamp housing and the engaging portion, the right side portion of the flexible substrate becomes the second recess on the front side of the vehicle lamp housing. Against it temporarily,
Form terminals on each of the flexible board and the vehicle lamp housing,
A method for manufacturing a vehicular lamp, wherein the first boss portion and the second boss portion are heat caulked, and a terminal of the flexible board and a terminal of the vehicular lamp housing are soldered. The vehicle lamp housing is molded from a resin material,
Forming the first concave portion, the convex portion, and the second concave portion adjacent to each other in the left-right direction on the front side surface of the vehicle lamp housing;
In the manufacturing method of the vehicular lamp that temporarily fixes the flexible substrate along the first concave portion, the convex portion, and the second concave portion,
Forming a wall portion for abutting the right end of the flexible substrate from the surface of the first recess to the front side;
Forming a first hole in the flexible substrate,
Forming a first boss portion for fitting with the first hole from the surface of the first recess to the right front side;
Distance between the right end portion and the first hole of the right edge of the flexible substrate of the flexible substrate is longer than the linear distance between the right edge of the wall portion and the first boss portion of the vehicle lamp housing Forming a flexible substrate and a vehicle lamp housing,
The right end portion of the flexible substrate is abutted against the wall portion of the vehicle lamp housing, and the right hole of the flexible substrate is fitted to the vehicle by fitting the first hole of the flexible substrate and the first boss portion of the vehicle lamp housing. Temporarily fix against the first recess on the front side of the lamp housing,
Forming a second hole in the flexible substrate,
A second boss portion for fitting with the second hole is formed to extend from the surface of the convex portion on the front side surface of the vehicle lamp housing to the front side;
Once the second hole of the flexible board and the second boss portion of the vehicle lamp housing are fitted together, the second flexible board is caused by the springiness of the flexible board to return the curved flexible board to a flat shape. Flexible so that the left edge of the hole engages with the left edge of the second boss of the vehicle lamp housing and the second hole of the flexible board and the second boss of the vehicle lamp housing are not separated. Forming a substrate and a vehicle lamp housing;
By fitting the second hole of the flexible board and the second boss part of the vehicle lamp housing, the central portion of the flexible board is temporarily fixed to the convex part of the front side surface of the vehicle lamp housing,
An engagement portion located on the front side of the second recess on the front side surface of the vehicle lamp housing is formed by extending upward,
By inserting the lower end portion of the flexible board between the surface of the second recess on the front side of the vehicle lamp housing and the engaging portion, the left side portion of the flexible board becomes the second recess on the front side of the vehicle lamp housing. Against it temporarily,
Form terminals on each of the flexible board and the vehicle lamp housing,
A method for manufacturing a vehicular lamp, wherein the first boss portion and the second boss portion are heat caulked, and a terminal of the flexible board and a terminal of the vehicular lamp housing are soldered. The vehicle lamp housing is molded from a resin material,
Forming the first concave portion, the convex portion, and the second concave portion adjacent to each other in the left-right direction on the front side surface of the vehicle lamp housing;
In the manufacturing method of the vehicular lamp that temporarily fixes the flexible substrate along the first concave portion, the convex portion, and the second concave portion,
Forming a wall portion for abutting the right end of the flexible substrate from the surface of the first recess to the front side;
Forming a first hole in the flexible substrate,
Forming a first boss portion for fitting with the first hole from the surface of the first recess to the right front side;
Distance between the right end portion and the first hole of the right edge of the flexible substrate of the flexible substrate is longer than the linear distance between the right edge of the wall portion and the first boss portion of the vehicle lamp housing Forming a flexible substrate and a vehicle lamp housing,
The right end portion of the flexible substrate is abutted against the wall portion of the vehicle lamp housing, and the right hole of the flexible substrate is fitted to the vehicle by fitting the first hole of the flexible substrate and the first boss portion of the vehicle lamp housing. Temporarily fix against the first recess on the front side of the lamp housing,
Forming a second hole in the flexible substrate,
A second boss portion for fitting with the second hole is formed to extend from the surface of the convex portion on the front side surface of the vehicle lamp housing to the front side;
Once the second hole of the flexible board and the second boss portion of the vehicle lamp housing are fitted together, the second flexible board is caused by the springiness of the flexible board to return the curved flexible board to a flat shape. Flexible so that the left edge of the hole engages with the left edge of the second boss of the vehicle lamp housing and the second hole of the flexible board and the second boss of the vehicle lamp housing are not separated. Forming a substrate and a vehicle lamp housing;
By fitting the second hole of the flexible board and the second boss part of the vehicle lamp housing, the central portion of the flexible board is temporarily fixed to the convex part of the front side surface of the vehicle lamp housing,
An engagement portion located on the front side of the second recess on the front side surface of the vehicle lamp housing is formed by extending downward,
By inserting the upper end portion of the flexible substrate between the surface of the second recess on the front side of the vehicle lamp housing and the engaging portion, the left side portion of the flexible substrate becomes the second recess on the front side of the vehicle lamp housing. Against it temporarily,
Form terminals on each of the flexible board and the vehicle lamp housing,
A method for manufacturing a vehicular lamp, wherein the first boss portion and the second boss portion are heat caulked, and a terminal of the flexible board and a terminal of the vehicular lamp housing are soldered.

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