JP2020059505A - Lamp unit - Google Patents

Abstract

To provide a lamp unit preventing the rattling of a light emitting element.SOLUTION: A lamp unit 4 has a holder member 9 configured to be attached to an attached object 3; a substrate 6 equipped with a light emitting element 5 on a main surface thereof; a holding member 8 which engages with the holder member to hold the substrate at a predetermined position on the holder member, and clips the substrate with respect to the holder member; and a cover member 9 which at least partially has light transmissivity, cooperates with the holder member, and is attached to the holder member so as to define a storage chamber 90 for storing the substrate and the holding member. The holder member is equipped with a storage recessed portion 17 for storing the substrate and the holding member. On a wall defining the storage recessed portion, an engaging portion 37 for locking the holding member is provided, and on the substrate, a notch portion 204 is provided at a position corresponding to the engaging portion.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a lamp unit including a light emitting element.

  There is known a lamp unit that emits light when a vehicle door is opened to illuminate the feet of an occupant (for example, Patent Document 1). The lamp unit of Patent Document 1 has a light emitting element. The light emitting element is connected to a bus bar, which is a metal plate provided in the functional section. The functional part is fitted to the design part attached to the assembly target part of the vehicle door.

JP 2012-166635 A

  Since the light emitting element is connected to the bus bar, the light emitting element has a problem of rattling with respect to the holder member.

  Therefore, in view of the above background, an object of the present invention is to provide a lamp unit in which rattling of a light emitting element is prevented.

  In order to solve the above problems, a lamp unit (4) according to an aspect of the present invention includes a holder member (9) configured to be attached to an attachment target (3) and a light emitting element (5) on its main surface. And a holding member for engaging the holder member to hold the substrate at a predetermined position on the holder member and to sandwich the substrate with respect to the holder member (6). 8) and a cover that is at least partially translucent and is attached to the holder member to cooperate with the holder member to define a receiving chamber (90) for receiving the substrate and the holding member. A holder (9), the holder member having a housing recess (17) for housing the substrate and the holding member, and a wall defining the housing recess for engaging the holding member. A part (37) is provided on the substrate. Wherein the notch at a position corresponding to the engaging portion (204) is provided.

  According to this aspect, since the light emitting element is coupled to the main surface of the substrate and the substrate is sandwiched by the holder member and the holding member, rattling of the light emitting element with respect to the holder member is prevented. Further, since the holding member and the substrate are housed in the housing recess, it is possible to prevent the holding member and the substrate from being damaged. Since the notch is provided at a position corresponding to the engaging portion, the board is less likely to interfere with the engaging portion during assembly, and the board is easily assembled to the holder member.

  Further, according to one aspect of the present invention, the accommodating recess is defined by a bottom wall (18) and a side wall (19) provided along an outer edge of the bottom wall, and the engaging portion is formed on the side wall. It is preferable that the cutout portion is provided on the outer peripheral edge of the substrate.

  According to this aspect, since the notch is provided on the outer peripheral edge of the substrate, the substrate can be easily moved to the position where the notch and the engaging portion correspond to each other, and the substrate holder member can be moved. Will be easier to assemble.

Further, according to one aspect of the present invention, the substrate is disposed between the bottom wall and the holding member,
It is preferable that the engaging portion projects from the side wall and is in contact with the surface of the holding member.

  According to this aspect, the assembling of the holding member becomes easy.

  Further, according to one aspect of the present invention, it is preferable that the substrate has a substantially rectangular shape, and the cutout portion is provided at a substantially central portion on one side of an outer peripheral edge of the substrate.

  According to this aspect, the load is less likely to be unevenly applied to the substrate and the substrate is less likely to be deformed, as compared with the case where the cutout portion is provided on the end portion side of the outer peripheral edge of the substrate.

  Further, according to an aspect of the present invention, a plurality of the engaging portions may be provided on the side wall, and the cutout portion may have a width that allows at least two of the engaging portions to pass through.

  According to this aspect, the number of notches provided in the substrate can be reduced, and thus the notches can be easily formed in the substrate.

  Further, according to an aspect of the present invention, the engagement portion may be provided only on one side (203) of an outer peripheral edge of the substrate.

  According to this aspect, the rigidity of the substrate is less likely to decrease as compared with the case where the substrate is provided on a plurality of sides of the outer peripheral edge.

  Further, according to one aspect of the present invention, the holding member forms an outer edge and includes a substantially rectangular outer frame (35), and the notch is provided between the outer frame and the bottom wall. Good.

  According to this aspect, since the substrate is located between the holding member and the bottom wall even in the cutout portion, it is difficult for an object to collide with the cutout portion. As a result, the deformation of the substrate can be further prevented.

  According to the above aspect, since the light emitting element is coupled to the main surface of the substrate and the substrate is sandwiched by the holder member and the holding member, it is possible to provide a lamp unit in which the light emitting element is prevented from rattling. Is possible. Further, since the notch is provided at a position corresponding to the engaging portion of the substrate, the substrate is less likely to interfere with the engaging portion during assembly, and the substrate is easily assembled to the holder member.

  Further, according to the aspect in which the cutout portion is provided on the outer peripheral edge of the substrate, it is possible to easily move the substrate so that the cutout portion and the engaging portion correspond to each other, and the substrate is attached to the holder member. Assembly is easier.

  Further, according to a mode in which the substrate has a substantially rectangular shape and the cutout portion is provided at a substantially central portion on one side of the outer peripheral edge of the substrate, in the case where the cutout portion is provided biased toward the end portion side of the outer peripheral edge of the substrate. Compared with, the load is less likely to be unevenly applied to the substrate and the substrate is less likely to be deformed.

  Further, according to the aspect in which the accommodating recess has a bottom wall and a side wall provided along the outer peripheral edge of the bottom wall, and the engaging part projects from the side wall and abuts on the surface of the holding member. Assembly becomes easy.

  Further, according to the aspect in which the plurality of engaging portions are provided on the side wall and the notches have a width that allows at least two of the engaging portions to pass, the number of notches provided on the substrate can be reduced. The notch can be easily formed in the substrate.

  Further, according to the aspect in which the engaging portion is provided only on one side of the outer peripheral edge of the substrate, the rigidity of the substrate is less likely to be reduced as compared with the case where it is provided on a plurality of sides of the outer peripheral edge.

  Further, according to the aspect in which the holding member includes the frame portion forming the outer edge and the cutout portion is provided between the frame portion and the bottom wall, it is difficult for an object to collide with the cutout portion. As a result, the deformation of the substrate can be further prevented.

The side view of the vehicle door to which the lamp unit according to the embodiment is attached. Perspective view of the lamp unit from the right rear Perspective view of the lamp unit as seen from the upper left Perspective view of connector connected to lamp unit Perspective view of cover member Side view of the lamp unit with the cover member removed Side view of the lamp unit when the cover member and the holding member are removed Side view of holder member Perspective view of holding member XX sectional view of FIG. XI-XI sectional view of FIG.

  Hereinafter, an example in which the lamp unit of the present invention is applied to a courtesy lamp provided on a vehicle door for a driver's seat will be described with reference to the drawings.

<< First Embodiment >>
As shown in FIG. 1, a vehicle door 1 for a driver's seat includes a door panel 2 serving as a skeleton, and a door trim 3 attached to the inside of the door panel 2 as an interior member. The courtesy lamp 4 is attached to the lower end of the door trim 3.

  As shown in FIGS. 2, 3, and 6, the courtesy lamp 4 includes a substrate 6 on which the light emitting element 5 is provided, a holder member 7 for supporting the substrate 6, and the substrate 6 fixed to the holder member 7. The holding member 8 and the cover member 9 that covers the substrate 6 and the holding member 8 are provided.

  The board 6 is a flat printed board on the surface of which electronic parts such as resistors and diodes (not shown) including the light emitting element 5 are soldered. As shown in FIG. 7, the substrate 6 has a plate-shaped base portion 202 having a substantially rectangular shape in a plan view, and the base portion 202 within the center portion of one short side (hereinafter, first short side 203) on one side of the base portion. One notch portion 204 formed by notching toward one side. The notch portion 204 is formed only on the first short side 203, and is not formed on the other short side of the base portion 202 (hereinafter, the second short side 209). The cutout portion 204 is defined by a first edge wall 205 and a second edge wall 206 extending substantially parallel to the long side of the base 202, and a third edge wall 207 formed substantially parallel to the short side of the base 202. . The light emitting element 5 is a surface-mounted LED element that emits white light, but is not limited to this and may be an organic EL element, a light bulb, or the like. In this embodiment, the light emitting elements 5 are arranged in a grid pattern of two rows in the lateral direction and four columns in the longitudinal direction.

  A substantially square rectangular through hole 11 is formed in the substrate 6 so as to penetrate substantially in the center thereof and extend along the longitudinal direction of the substrate 6. The substrate 6 is further provided with four connection holes 12 which are substantially circular through holes on the longitudinal side of the substrate 6 with respect to the rectangular through holes 11. A land 13 for soldering is provided on the surface of the substrate 6 at the peripheral edge of the opening of the connection hole 12.

  As shown in FIGS. 2 and 11, the holder member 7 is a resin member having a housing portion 15 and a connector portion 16 protruding from the housing portion 15 in the X direction which is a predetermined direction. An accommodation recess 17 that is recessed in the X direction is formed on the accommodation portion 15 on the side opposite to the surface to which the connector portion 16 is coupled. The accommodation recess 17 is defined by an accommodation recess bottom wall 18 perpendicular to the X direction and an accommodation recess side wall 19 provided around the accommodation recess bottom wall 18.

  As shown in FIG. 8, the housing recess bottom wall 18 has a substantially rectangular shape. Hereinafter, the direction along the long side of the housing recess bottom wall 18 will be referred to as the Y direction, and the direction along the short side will be referred to as the Z direction. The housing recess side wall 19 of the holder member 7 includes a housing recess side wall 20 connected to each of the short sides of the housing recess bottom wall 18, and a housing recess vertical wall 107 connected to each of the long sides of the housing recess bottom wall 18. Is included. The housing recess lateral wall 20 faces the Y direction and faces each other, and includes a first lateral wall 20A and a second lateral wall 20B that are substantially parallel to each other. The housing recess vertical wall 107 includes two vertical walls that face each other in the Z direction and face each other, and are substantially parallel to each other.

  As shown in FIG. 11, the connector portion 16 is formed with an insertion recess 22 that is recessed in the Y direction. The housing recess bottom wall 18 is formed with a locking recess 23 recessed in the X direction. The locking recess 23 and the insertion recess 22 partially overlap each other in the X and Y directions when viewed from the Z direction. An opening 24 is formed in a portion where the locking recess 23 and the insertion recess 22 overlap. The locking recess 23 and the insertion recess 22 are connected to each other through an opening 24. The locking recess bottom wall 25, which is the bottom wall of the locking recess 23, is located substantially at the center of the insertion recess 22 in the X direction. The insertion recess bottom wall 26, which is the bottom wall of the insertion recess 22, is located substantially at the center of the locking recess 23 in the Y direction. The locking recess bottom wall 25 and the insertion recess bottom wall 26 are connected to each other.

  The side wall defining the insertion recess 22 includes a first insertion recess lateral wall 27 and a second insertion recess lateral wall 28 facing each other, and a pair of insertion recess vertical walls 29 facing each other. The first insertion recess side wall 27 and the second insertion recess side wall 28 face the X direction. The first insertion recess side wall 27 is located closer to the locking recess 23 side than the second insertion recess side wall 28. As shown in FIG. 10, each of the insertion recess vertical walls 29 faces the Z direction.

  As shown in FIG. 11, the side wall defining the locking recess 23 includes a locking recess vertical wall 30 that is orthogonal to the Y direction and faces the opening side of the insertion recess 22.

  As shown in FIG. 7, the substrate 6 is housed in the housing recess 17 so that the main surface faces the X direction. The substrate 6 is arranged on the accommodation recess bottom wall 18 such that the first short side 203 is along the first lateral wall 20A, and abuts on the rear surface of the accommodation recess bottom wall 18.

  A holding member 8 is arranged on the front side of the substrate 6. The holding member 8 is a flexible resin member. As shown in FIG. 9, the holding member 8 has a substantially rectangular outer frame 35 that forms an outer edge of the holding member 8 and a plurality of vertical beams 36 provided between the outer frames 35. The outer frame 35 is formed in substantially the same shape as the edge portion of the substrate 6.

  In the holding member 8, a portion (long side) extending in the longitudinal direction of the outer frame 35 is a long side of the substrate 6, and a portion (short side) extending in a direction orthogonal to the longitudinal direction of the outer frame 35 is a short side of the substrate 6. It is arranged along. The vertical beam 36 extends in a direction orthogonal to the longitudinal direction of the outer frame 35. Each of the vertical beams 36 connects the portions of the outer frame 35 extending in the longitudinal direction. In this embodiment, the holding member 8 is provided with three vertical beams 36. The holding member 8 is in contact with the substrate 6 on the surface (back surface) of the outer frame 35 and the vertical beam 36 that faces the substrate 6.

  A locking protrusion 37 is provided on each of the storage recess lateral walls 20. As shown in FIG. 6, the first lateral wall 20A is provided with two locking projections 37, a first locking projection 37A and a second locking projection 37B. The first locking protrusions 37A and the second locking protrusions 37B respectively project inside the accommodation recess 17 along the Y direction. The first locking protrusion 37A is located on one side in the Z direction with respect to the second locking protrusion 37B, and is arranged so as to be parallel to the housing recess bottom wall 18. Further, the second lateral wall 20B is provided with two locking projections 37, which are a third locking projection 37C and a fourth locking projection 37D, which are arranged in parallel with the housing recess bottom wall 18. The third locking protrusion 37C and the fourth locking protrusion 37D project inside the housing recess 17 along the Y direction. The first locking protrusion 37A and the third locking protrusion 37C face each other in the Y direction, and the second locking protrusion 37B and the fourth locking protrusion 37D face each other in the Y direction.

  The first locking projection 37A to the fourth locking projection 37D are in contact with the surface of the outer frame 35, respectively. This restricts the movement of the holding member 8 in the direction away from the accommodation recess bottom wall 18. Further, as described above, the substrate 6 contacts the housing recess bottom wall 18 on the back surface and contacts the back surface of the holding member 8 on the front surface, so that the holding member 8 holds the first locking projections 37A to the fourth locking The substrate 6 is locked by the protrusion 37D and is sandwiched between the holding member 8 and the housing recess bottom wall 18.

  The cutout portion 204 faces the first locking projection 37A and the second locking projection 37B in the Y direction when viewed in the X direction, and the cutout portion 204 corresponds to the first locking projection 37A and the second locking projection 37B. It is in a position to The cutout portion 204 is located between the outer frame 35 of the holding member 8 and the housing recess bottom wall 18 in the X direction.

  Further, the distance between the end of the first locking protrusion 37A on the one side in the Z direction and the end of the second locking protrusion 37B on the other side in the Z direction is greater than the distance between the first edge wall 205 and the second edge wall 206. Is also small. As a result, the first locking protrusion 37A and the second locking protrusion 37B are set to be able to pass through the cutout portion 204 at the same time. The tip of the first locking projection 37A and the tip of the third locking projection 37C, and the tip of the second locking projection 37B and the tip of the fourth locking projection 37D are respectively the third edge wall 207 and the second short side. The distance is more than 209. Therefore, at the time of assembly, a portion between the third edge wall 207 and the second short side 209 is provided between the projecting ends of the first locking projection 37A and the third locking projection 37C, and the second locking projection 37B. It is possible to easily move the substrate 6 toward the accommodation recess bottom wall 18 by moving the substrate 6 so as to pass between the protruding end of the second locking protrusion 37D and the protruding end of the fourth locking protrusion 37D.

  The holding member 8 includes a horizontal beam 38 that connects substantially vertical centers of the plurality of vertical beams 36. In this embodiment, the horizontal beam 38 connects all three vertical beams 36. The vertical beam 36 and the horizontal beam 38 pass between the adjacent light emitting elements 5. The holding member 8 is formed with a light passing hole 39 penetrating in the X direction at a position corresponding to the light emitting element 5 by the outer frame 35, the vertical beam 36, and the horizontal beam 38. As shown in FIG. 11, the lateral beam 38 is provided with a locking projection 40 that projects from the back surface in the X direction.

  The locking protrusion 40 passes through the rectangular through hole 11 and projects into the locking recess 23 to be fitted therein. Since the locking projection 40 passes through the rectangular through hole 11, the movement of the locking projection 40 with respect to the holding member 8 of the substrate 6 in the direction perpendicular to the protruding direction is restricted. Since the locking projection 40 is fitted in the locking recess 23, the movement of the holding member with respect to the holder member 7 in the direction along the housing recess bottom wall 18 (X direction and Y direction) is restricted.

  The locking convex portion 40 is defined by a locking convex portion protruding end wall 41 facing the X direction and a locking convex portion side wall 42 connected to the periphery of the locking convex portion protruding end wall 41. The locking projection protruding end wall 41 is formed in different steps and has a first protruding end surface 43 and a second protruding end surface 44 that are oriented substantially in the X direction, and a connecting surface 45 that connects the first protruding end surface 43 and the second protruding end surface 44. Is provided. The first projecting end surface 43 is located closer to the base end side of the locking projection 40 than the second projecting end surface 44. The first projecting end surface 43 forms a surface facing the locking recess bottom wall 25, and the second projecting end surface 44 is provided at a position facing the second insertion recess side wall 28 via the opening 24. The connection surface 45 faces the opening side of the insertion recess 22 in the Y direction and is continuous with the wall surface of the insertion recess bottom wall 26. The locking projection 40 is in contact with the locking recess bottom wall 25 at the first projecting end face 43. The locking projection side wall 42 includes a locking projection vertical wall 46 that faces the locking recess vertical wall 30.

  A plurality of metal connection terminals 47 formed in a leaf spring shape are coupled to the substrate 6. As shown in FIGS. 6 and 7, in this embodiment, two connection terminals 47 are coupled to the substrate 6. The connection terminal 47 is coupled to the substrate 6 on the base end side.

  As shown in FIGS. 7 and 11, the connection terminal 47 includes a base end portion 47A, an intermediate portion 47B, and a protruding end portion 47C in order from the base end side. The base end portion 47A has two branches on the base end side, is inserted into the connection hole 12 and is soldered to the land 13. The base end portion 47A extends from the connection hole 12 toward the rectangular through hole 11. The base end portion 47A is bent in the X direction on the projecting end side, extends inside the rectangular through hole 11, and is connected to the intermediate portion 47B. The intermediate portion 47B reaches the back side of the substrate 6 along the rectangular through hole 11, passes between the locking convex vertical wall 46 and the locking concave vertical wall 30, and reaches the locking concave bottom wall 25. There is. The intermediate portion 47B is bent at the locking recess bottom wall 25 and is connected to the protruding end portion 47C. The protrusion 47C extends in the Y direction along the locking recess bottom wall 25 (see FIG. 10). The locking recess bottom wall 25 is formed with a plurality of grooves 48 extending from the locking recess vertical wall 30 toward the opening of the insertion recess 22 (Y direction). In this embodiment, two grooves 48 are formed in the locking recess bottom wall 25. The projecting end portions 47C are received in the grooves 48 on the intermediate portion 47B side, respectively, and as shown in FIGS. 10 and 11, the projecting end portions 47C are located on the intermediate portion 47B side and the engaging recess bottom wall 25 and the first projecting end surface 43 are formed. It is sandwiched between and.

  As shown in FIG. 8, a narrowed portion 49 having a width narrowed in the Z direction is formed substantially in the middle of the groove 48 in the Y direction. The width of the projecting end portion 47C in the Z direction is narrowed at a position corresponding to the narrowed portion 49. When the connection terminal 47 moves along the Y direction, the projecting end portion 47C contacts the wall surface defining the narrowed portion 49. The narrowed portion 49 restricts the movement of the connection terminal 47 in the Y direction.

  As shown in FIG. 11, the projection 47C extends in the Y direction through the groove 48 and projects toward the opening of the insertion recess 22. The projecting end portion 47C projects substantially perpendicularly to the insertion recess bottom wall 26 and reaches between the second projecting end surface 44 and the second insertion recess lateral wall 28. Since the second projecting end surface 44 is located closer to the base end side than the first projecting end surface 43, the second projecting end surface 44 is separated from the locking recess bottom wall 25 in the X direction. Therefore, a gap is formed between the second projecting end surface 44 and the connection terminal 47, and the projecting end of the projecting end portion 47C projects from between the continuous connecting surface 45 and the wall surface of the insertion recess bottom wall 26. The second projecting end surface 44 is inclined toward the opening of the insertion recess 22 and away from the second insertion recess lateral wall 28.

  A protrusion 51 extending in the Y direction and a locking hole 53 penetrating in the X direction are formed in the second insertion recess lateral wall 28.

  As shown in FIG. 3, a bottom wall rear surface 54 that is substantially perpendicular to the X direction is formed on the surface of the housing recess bottom wall 18 on the protruding direction side of the connector portion 16. The connector portion 16 projects from the bottom wall back surface 54 in the X direction, and the opening of the insertion recess 22 is located on the projecting direction side of the connector portion 16 with respect to the bottom wall back surface 54. As shown in FIG. 11, the opening edge of the insertion recess 22 is connected to the bottom wall back surface 54 via an inclined surface 55 that is inclined toward the protruding direction of the connector portion 16 toward the opening of the insertion recess 22.

  As shown in FIG. 4, a terminal receiving hole 61 into which the connection terminal 47 is inserted is formed at the insertion end of the connector 60, and a cable 62 extends outward from the rear surface in the insertion direction of the connector 60. The cable 62 extends to the vehicle body along the door panel 2 and is connected to a control unit (not shown) provided on the vehicle body. A guide groove 63 extending along the extending direction is formed on each side surface of the connector 60. The connector 60 is provided with a locking wall 65 protruding from the side surface. The locking wall 65 is provided with a locking claw 67 that engages with the locking hole 53.

  The connector insertion hole 80 is defined by the second projecting end surface 44, the connection surface 45, and the insertion recess 22. When the connector 60 is inserted into the connector insertion hole 80, the front end of the connector 60 contacts the inclined surface 55, moves along the inclined surface 55, and is guided to the insertion recess 22. When the connector 60 is further inserted, the front end of the connector 60 contacts the second projecting end face 44 and moves along the second projecting end face 44. As a result, the connector 60 is guided to the proper position where the connection terminal 47 is inserted into the terminal receiving hole 61. The ridge 51 engages with the guide groove 63, and the connector 60 is guided to the proper position. The connector 60 is coupled to the courtesy lamp 4 by engaging the locking claw 67 with the locking hole 53. At this time, as shown in FIG. 10, the connector 60 is sandwiched between the second projecting end face 44 and the second insertion recess lateral wall 28. Further, the connector 60 is connected to the substrate 6 via the connection terminal 47.

  As shown in FIGS. 2 and 3, a plurality of locking claws 70 are provided on the outer surface of the housing portion 15 along the opening edge of the housing recess 17. As shown in FIG. 4, the cover member 9 has a plate shape made of a translucent resin. An engagement hole 71 is formed at the edge of the cover member 9. When the locking claw 70 is engaged with the engagement hole 71, the cover member 9 is coupled to the opening of the accommodation recess 17. As shown in FIG. 2, by closing the opening of the accommodating recess 17 by the cover member 9, the holder member 7 and the cover member 9 cooperate to form the accommodating chamber 90 for accommodating the substrate 6 and the holding member 8. To be done.

  As shown in FIGS. 6, 7, and 8, a plurality of protrusions 73 protruding in the opening direction are provided on the opening edge of the accommodation recess 17. As shown in FIG. 3, the cover member 9 contacts the protrusion 73, and a gap is formed between the cover member 9 and the opening edge of the housing recess 17. The heat generated from the light emitting element 5 can be released to the outside of the accommodation recess 17 through the gap.

  The cover member 9 is formed of a translucent resin, and has a cover side wall 74 and a cover lower wall 75 that is connected to the cover side wall 74 substantially vertically, as shown in FIGS. 2 and 5. The cover side wall 74 is colorless and transparent and has a substantially rectangular shape. A red transparent coloring portion 76 is provided on the outer surface of the cover side wall 74. As shown in FIG. 1, when the courtesy lamp 4 is attached to the door trim 3, the outer surface of the colored portion 76 is continuous with the side surface of the door trim 3. The cover lower wall 75 is colorless and transparent and has a substantially rectangular shape. When the courtesy lamp 4 is attached to the door trim 3, the outer surface of the cover lower wall 75 is continuous with the lower surface of the door trim 3. In the present embodiment, the cover member 9 is formed of a translucent resin, but the cover member 9 may partially have a translucent property.

  The courtesy lamp 4 is fixed to the door trim 3 to be attached by using a predetermined member such as a screw. A connector 60 is connected to the courtesy lamp 4. The door trim 3 is fixed to the door panel 2 with a predetermined bolt. When the vehicle door 1 is closed, the X direction is a direction directed obliquely upward toward the vehicle outer side, and the Y direction is a front-back direction with respect to the vehicle body.

  When the vehicle door 1 is opened, power is supplied to the light emitting element 5 via the cable 62, and the light emitting element 5 emits light. The cover side wall 74 of the courtesy lamp 4 is illuminated in red by the light emission of the light emitting element 5. As a result, the courtesy lamp 4 functions as a warning light for the following vehicle. At the same time, the cover lower wall 75 of the courtesy lamp 4 lights up in white, and the courtesy lamp 4 functions as an illumination for illuminating the feet of the occupant moving up and down.

  Next, the effect of the courtesy lamp 4 thus configured will be described. The light emitting element 5 is coupled to the substrate 6, and the substrate 6 is sandwiched between the holding member 8 and the housing recess bottom wall 18. Therefore, rattling of the light emitting element 5 is prevented.

  The holding member 8 and the substrate 6 are covered with the cover member 9. Further, the holding member 8 and the substrate 6 are housed in the housing recess 17. The cover member 9 closes the opening of the accommodation recess 17. By these, even when a load is applied to the courtesy lamp 4, the load is not directly applied to the holding member 8 and the substrate 6, and damage to the holding member 8 and the substrate 6 can be prevented.

  At the time of assembly, the substrate 6 is obliquely inserted into the accommodation recess 17, and the second short side 209 is arranged so as to face the second lateral wall 20B, and then the substrate 6 is rotated to place the first short side 203 in the accommodation recess 17. The substrate 6 may be moved toward the bottom so as to be in contact with the housing recess bottom wall 18. At this time, since the first locking protrusion 37A and the second locking protrusion 37B simultaneously pass through the cutout portion 204, the substrate 6 does not interfere with the first locking protrusion 37A and the second locking protrusion 37B, and the substrate 6 is not moved. It can be easily arranged. Further, since the cutout portion 204 is provided only in the first short side 203, the rigidity of the substrate 6 is higher than that in the case where the cutout portion 204 is provided in the first short side 203 and the second short side 209. Further, since the cutout portion 204 is provided only on the first short side 203, the substrate 6 can be easily formed.

  Further, since the cutout portion 204 allows the first locking projection 37A and the second locking projection 37B to pass through at the same time, the substrate 6 has positions corresponding to the first locking projection 37A and the second locking projection 37B, respectively. It is not necessary to form the notch portion 204 in the. Therefore, the shape of the substrate 6 is simplified and the substrate 6 can be easily formed.

  Since the cutout portion 204 is provided at the outer peripheral edge of the substrate 6, the substrate 6 can be easily arranged so as to avoid interfering with the first locking protrusion 37A and the second locking protrusion 37B. Further, since the cutout portion 204 is provided in the substantially central portion of the first short side 203, when the load is applied to the first short side 203, the load does not concentrate on one of both ends of the first short side 203. It is difficult for the load to be unevenly applied to the substrate 6. Therefore, the substrate 6 is less likely to be deformed.

  The cutout portion 204 is located between the outer frame 35 and the housing recess bottom wall 18. Therefore, an object is unlikely to collide with the cutout portion 204 and the substrate 6 is unlikely to be deformed. Since the cutout portion 204 is sandwiched between the outer frame 35 and the housing recess bottom wall 18, the first short side 203 can be more firmly held between the outer frame 35 and the housing recess bottom wall 18. . Accordingly, the holding member 8 can be stably held between the locking projection 37 and the housing recess bottom wall 18.

  Since the substrate 6 is sandwiched between the holding member 8 and the holder member 7, the attachment does not require a screw or the like, and the attachment is easy. Further, since the substrate 6 is arranged along the accommodation recess bottom wall 18, a load that breaks the substrate 6 is less likely to be applied, and damage or movement of the substrate 6 can be prevented.

  Light from the light emitting element 5 reaches the opening of the housing recess 17 without being blocked by the holding member 8 by the light passing hole 39. In addition, since the holding member 8 is formed with the light passing hole 39, the holding member 8 is lighter in weight than the plate-shaped holding member 8. Further, since the horizontal beam 38 connects the vertical beams 36 and is not connected to the outer frame 35, the outer frame 35 is easily bent in the Y direction, and the holding member 8 can be easily assembled.

  Since the connection terminal 47 is sandwiched between the locking recess bottom wall 25 and the first projecting end surface 43, movement of the connection terminal 47 with respect to the holder member 7 can be prevented. It is not necessary to fix the connection terminal 47 to the holder member 7 by adhesion or the like, and the assembly is easy.

  The projecting portion 47C projects from the connecting surface 45 and the insertion recess bottom wall 26. Therefore, the connection terminal 47 projects from the approximate center of the bottom wall of the connector insertion hole 80. Therefore, the connection terminal 47 can be fitted into the terminal receiving hole 61 of the connector 60.

  Although the description of the specific embodiment is finished above, the present invention is not limited to the above-described embodiment and can be widely modified and implemented. Although two locking projections 37 are provided on each of the first lateral wall 20A and the second lateral wall 20B, three or more locking projections 37 may be provided. At this time, it is preferable that at least two of the locking projections 37 can pass through one notch 204 at the same time.

  In the present embodiment, the lamp unit is applied to the courtesy lamp 4, but the present invention is not limited to this. For example, the lamp unit may be applied to various lights for vehicles such as headlights, winkers, fog lights, tail lights, brake lights, backlights, number lights, and room lights. Further, the lamp unit may be applied to a bicycle light, a flashlight, or the like.

3: Door trim (attachment target)
4: Courtesy lamp (lamp unit)
5: Light emitting element 6: Substrate 7: Holder member 8: Holding member 9: Cover member 17: Housing recess 18: Housing recess bottom wall (bottom wall)
19: Side wall of accommodation recess (side wall)
35: Outer frame 37: Locking protrusion (engaging part)
90: accommodation chamber 203: first short side 204: notch

Claims (7)

A holder member configured to be attached to an attachment target,
A substrate having a light emitting element on its main surface,
In order to hold the substrate at a predetermined position on the holder member, a holding member that engages with the holder member and holds the substrate with respect to the holder member,
At least partially translucent, and having a cover member attached to the holder member to cooperate with the holder member to define an accommodation chamber for accommodating the substrate and the holding member,
The holder member includes an accommodation recess that accommodates the substrate and the holding member,
An engagement portion for locking the holding member is provided on a wall defining the accommodation recess,
The lamp unit, wherein a cutout portion is provided at a position corresponding to the engaging portion on the substrate. The accommodation recess is defined by a bottom wall and a side wall provided along an outer edge of the bottom wall,
The engaging portion is provided on the side wall,
The lamp unit according to claim 1, wherein the cutout portion is provided on an outer peripheral edge of the substrate. The substrate is disposed between the bottom wall and the holding member,
The lamp unit according to claim 2, wherein the engaging portion projects from the side wall and is in contact with a surface of the holding member. The substrate has a substantially rectangular shape,
The lamp unit according to claim 3, wherein the cutout portion is provided at a substantially central portion on one side of an outer peripheral edge of the substrate. A plurality of the engaging portions are provided on the side wall,
The lamp unit according to claim 4, wherein the cutout portion has a width that allows at least two of the engagement portions to pass therethrough.   The lamp unit according to claim 5, wherein the engaging portion is provided only on one side of an outer peripheral edge of the substrate. The holding member forms an outer edge and includes a substantially rectangular outer frame,
The lamp unit according to any one of claims 2 to 6, wherein the cutout portion is provided between the outer frame and the bottom wall.

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