JP2007203911A - Interior illumination light for vehicle and fixing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain high assembling workability of an interior illumination light for vehicle and easy maintenance. <P>SOLUTION: This interior illumination light 11 is constituted of a function portion 12 and a decorative portion 13. A locking claw 51 is formed on a side surface of a base housing 41 of the decorative portion 13. A housing 21 of the function portion 12 is formed with an elastically deformable operation panel 33 having a locking portion 34 which permits locking of the locking claw 51 of the decorative portion 13 to be fitted. The operation panel 33 is pressed against from the inside of a bulb housing 44 for elastic deformation, thus releasing the locking state of the locking portion 34 with the locking claw 51. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle interior illumination lamp that is attached to a ceiling of a vehicle and a fixing method thereof.

  In general, a vehicle is provided with an indoor lamp on its ceiling. As this indoor lighting, as shown in FIG. 11, a functional unit 104 having a light source bulb 101, a switch 102, a wire harness connecting portion 103, etc. on the non-cabinet side, which is the back side of the ceiling plate 100 that forms the ceiling of the vehicle. The design portion 105 that projects the light from the light source bulb 101 to the indoor side is fitted into the functional portion 104 from the indoor side through the opening 100a of the ceiling plate 100, and the ceiling is formed by the design portion 105 and the functional portion 104. There is a structure in which assembling workability is improved by sandwiching the plate 100. In addition, this indoor illumination lamp has an engaging claw 107 formed on the side surface of the design portion 105 for the purpose of facilitating the maintenance work, and the engaging claw 107 of the design portion 105 is formed on the functional portion 104. An elastically deformable operation plate 109 having an engageable engagement groove 108 is provided, and the operation plate 109 is elastically deformed and engaged by pressing from the inside of the valve chamber of the design portion 105 with the lens cover 110 removed. The engagement state of the groove 108 with the engagement claw 107 is released (see, for example, Patent Document 1).

JP 2005-319923 A

  By the way, on the ceiling side of a vehicle, for example, for the purpose of making a difference in product value depending on the grade of the vehicle, a base grade vehicle uses a ceiling plate made of a resin member panel as it is, while a high grade specification vehicle. Uses a ceiling board in which the surface of the resin member panel is covered with a composite material such as molded flocking or chemical fiber (fabric trim). Since the functional part and design part of the indoor lighting described above are assembled while flattening the ceiling plate, if different ceiling plates are used depending on the specifications as described above, there will be a difference in the clamping allowance. It becomes difficult to ensure a proper clamping state.

  In addition, by using a coupling with an existing taper screw or the like, there are some that can allow variation in the thickness direction by screw tightening allowance, but the assembling workability is inferior to the indoor illumination lamp having the above structure. End up.

  Furthermore, if a structure that can be locked in multiple stages, such as a binding band, is adopted, the difference in the thickness of the ceiling plate can be allowed to some extent, but if such a structure is used in a ceiling plate with a soft surface, The moderation feeling at the time of assembling tends to be unclear, resulting in variations in the tightening allowance, resulting in rattling at the time of running, which is not suitable.

  For the reasons described above, when a structure is adopted in which the ceiling panel is sandwiched between the design part and the functional part in consideration of assembly workability, it differs depending on the specifications in order to securely attach this to the ceiling panel without rattling. Since it is necessary to set a functional part for each of the ceiling boards having a plurality of sandwiched thicknesses, the cost of parts increases, so there is room for further improvement.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicular interior lighting lamp and a fixing method thereof that can reduce the cost of components while improving the assembling workability.

In order to achieve the above object, the vehicle interior illumination lamp according to the present invention is characterized by the following (1), (2) and (3).
(1) It has a functional part having a light source and a design part provided on the indoor side, and the design part is fitted into the functional part so as to be assembled to each other via the ceiling board and sandwich the ceiling board A vehicle interior lighting to be mounted,
The functional unit includes a sandwiching holder that is fitted with the design portion and sandwiches the ceiling plate with the design portion, and a lamp unit that has the light source and is attached to the sandwiching holder.
(2) The sandwich holder of the vehicular interior illumination lamp according to (1) is provided with a reflector portion that is disposed above the light source and reflects the light of the light source.
(3) The sandwich holder of the vehicle interior illumination lamp of (1) or (2) has a foldable spacer hinged to a contact portion with the ceiling plate.
The vehicle interior illumination lamp fixing method according to the present invention is characterized by the following (4).
(4) It has a functional part having a light source and a design part provided on the indoor side, and the design part is fitted into the functional part so as to be assembled to each other via the ceiling board and sandwich the ceiling board A method for fixing a vehicle interior lighting to be attached,
The functional part is divided into a sandwiching holder in which the design part is fitted and the ceiling part is sandwiched with the design part, and a lamp unit having the light source and attached to the sandwiching holder,
The design portion and the lamp unit are made common to the difference in the sandwiching thickness of the ceiling plate, and this is dealt with by replacing the sandwiching holder.

According to the vehicle interior illumination lamp of (1) above, the functional part and the design part are assembled to each other via the ceiling plate so as to sandwich the ceiling plate by fitting the design part into the functional part via the ceiling plate. Since it is attached in the state which carried out, the assembly workability | operativity of these function parts and design parts can be improved significantly.
In addition, the functional unit includes a sandwiching holder in which the design unit is fitted and the ceiling plate is sandwiched between the design unit and a lamp unit that has a light source and is attached to the sandwiching holder. Even if there is a difference in the clamping allowance when using the ceiling plate, prepare a plurality of things that match the clamping allowance only for the clamping holder without changing the basic specifications of the lamp unit with the light source. An appropriate clamping state can be ensured by changing the clamping thickness. Therefore, component costs can be suppressed.
According to the vehicle interior illumination lamp of (2) above, the sandwiching holder is provided with the highly reflective reflector portion that is disposed above the light source and reflects the light from the light source. Can improve the illuminance. In other words, it is necessary to cover the periphery of the light source with parts as much as possible in order to suppress light leakage to the back of the ceiling, but if it is a conventional one that sandwiches the ceiling plate with the functional part having the light source, it is related to the color inside the car The light source needs to be covered with a design part with no degree of freedom to determine the color, so it could not be said that the illuminance increase was sufficient, but the functional part is a sandwiching holder in which the design part is fitted and the ceiling plate is sandwiched between the design part And a lamp unit that has a light source and is attached to the sandwich holder, the flexibility of the shape and color of the sandwich holder is increased, and the sandwich holder that has a high degree of freedom of shape and color. A reflector part can be provided, the light reflectance around the light source is improved, and the illuminance can be increased.
According to the vehicular interior lighting of the above (3), since the sandwiching holder has a foldable spacer hinged to the contact portion to the ceiling plate, the use of the spacer depends on the sandwiching thickness of the ceiling plate. By selecting non-use, an appropriate clamping state can be secured for a plurality of types of ceiling boards. Therefore, the number of parts management points of the sandwiching holder can be halved, and the part cost can be further suppressed.
According to the fixing method of the vehicle interior illumination lamp of (4) above, the functional part and the design part are assembled to each other via the ceiling board by fitting the design part into the functional part via the ceiling board. Since it is attached in the state which pinched the board, the assembly workability | operativity of these function parts and a design part can be improved significantly.
In addition, the functional part includes a sandwiching holder in which the design part is fitted and the ceiling part is sandwiched between the design part and a lamp unit that has a light source and is attached to the sandwiching holder. For the difference in design, the design part and the lamp unit are the same, and it corresponds by replacing the sandwich holder, so even if there are differences in the clamping allowance when using different ceiling boards, depending on the specifications etc. Without changing the basic specifications of the lamp unit that has the light source and the wire harness that supplies power to the lamp unit, prepare only multiple holding holders according to the clamping allowance, and replace them according to the clamping thickness of the ceiling plate. By doing so, an appropriate clamping state can be ensured. Therefore, component costs can be suppressed and the wire length types of wire harnesses can be integrated.

  According to the present invention, a lamp unit can be securely assembled to a ceiling plate having a plurality of sandwiching thicknesses by simply replacing the sandwiching holder, and the basic design of the component parts of the lamp unit and the wire harness connected to the lamp can be achieved. Can be shared. Furthermore, since it is replaced with the specification of the sandwiching holder adapted to the ceiling plate to be mounted, the change of the specification of the component can be kept to the minimum for the diversification of the specification of the lamp unit, and the component cost can be suppressed.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to FIGS.

  FIG. 1 is an exploded perspective view showing a structure of a vehicular interior illuminating lamp according to an embodiment of the present invention as seen from obliquely below, and FIG. 2 is an exploded perspective view showing the structure of the interior illuminating lamp of FIG. 3 is a cross-sectional view showing the main part of the room illuminating lamp in FIG. 1, FIG. 4 is a bottom view showing the main part of the room illuminating lamp in FIG. 1, and FIG. 5 shows the assembled structure of the room illuminating lamp in FIG. FIG. 6 is a perspective view seen obliquely from above, and FIG. 7A is an example of a sandwich holder having a foldable spacer. 7B is a perspective view of the sandwich holder shown in FIG. 7A viewed obliquely from above, and FIG. 8A is a sandwich of the spacer folded at the hinge portion. FIG. 8B is a perspective view of the holder shown in FIG. 8A viewed from diagonally above, and FIG. 9 is a perspective view of FIG. 8A and FIG. 8B. Side view of a nip holder shown, and FIG. 10 is a sectional view showing an essential part of the interior lamp pinch holder is incorporated in FIG.

  As shown in FIGS. 1 to 3, the vehicle interior illumination lamp 11 includes a functional unit 12 and a design unit 13.

  The functional unit 12 is provided on the back side of the ceiling plate 14 that forms the ceiling of the vehicle, that is, on the vehicle body outer plate roof side (not shown), and is disposed at a position facing the substantially rectangular opening 15 formed in the ceiling plate 14. Is done. Moreover, the design part 13 is attached in the state fitted in the opening part 15 of the ceiling board 14.

  The functional unit 12 further includes a lamp unit 16 and a sandwiching holder 17. The lamp unit 16 includes a unit housing 21 composed of a plurality of synthetic resin parts. The unit housing 21 includes an incandescent bulb (hereinafter simply referred to as “bulb”) 22 as a light source and a push type. A switch 23 is provided. The valve 22 protrudes obliquely downward from one end side of the unit housing 21 in the longitudinal direction, and the switch 23 protrudes substantially vertically downward from the other end side of the unit housing 21 in the length direction. A chamfered portion 24 is formed at a lower portion on one end side in the longitudinal direction of the unit housing 21 so as to be orthogonal to the protruding direction of the valve 22.

  Further, the unit housing 21 has a wire harness connecting portion 25 at the upper part of the middle portion in the longitudinal direction, and the wire harness 26 is substantially orthogonal to the unit housing 21 in the wire harness connecting portion 25. Is held in. And in this wire harness connection part 25, the electric wire of the wire harness 26 is press-fitted and connected to the contact of the bus bar (not shown) to which the valve 22 and the switch 23 are connected.

  Further, the unit housing 21 is formed with elastically deformable support plate portions 28 extending upward from the lower portion at two locations on the both side surfaces along the longitudinal direction and spaced apart in the length direction. Engaging claws 29 are formed on the outer sides of the support plate portions 28.

  The sandwiching holder 17 is an integrally molded product of synthetic resin, and an accommodation recess 31 that is recessed downward is formed on the upper side thereof. The housing recess 31 is a portion to which the lamp unit 16 is attached, and a valve insertion opening 32 through which the bulb 22 of the lamp unit 16 is inserted at the bottom and a switch 23 of the lamp unit 16 is inserted at the bottom of the housing recess 31. A switch insertion opening 33 is formed. Further, a plurality of engaging grooves 34 for engaging the engaging claws 29 of the lamp unit 16 with the end portions of the lamp unit 16 at the time of attachment are formed on both sides of the housing recess 31 so as to be pulled out downward.

  The sandwiching holder 17 includes a sandwiching portion 36 on both sides thereof. These clamping portions 36 are formed with clamping plate portions 37 extending in the longitudinal direction, and the front end surfaces of these clamping plate portions 37 can come into contact with the ceiling plate 14.

  Further, the sandwiching holder 17 includes an operation plate 38 on the inner side of the sandwiching portion 36. The upper ends of these operation plates 38 are connected to the upper part of the sandwiching holder 17. The operation plate 38 can be elastically deformed when a lateral force is applied to the lower end side thereof.

  Further, a partition plate portion 40 whose upper surface is the bottom surface of the housing recess 31 described above is disposed between the operation plates 38, and the bulb 22 of the lamp unit 16 is formed in the partition plate portion 40. It protrudes downward from the valve insertion opening 32. Here, the partition plate portion 40 is formed with an inclined plate portion 41 which is inclined so as to be orthogonal to the bulb 22 in accordance with the chamfered portion 24 of the lamp unit 16 on one side, and a substantially horizontal main plate portion 42 is formed on the opposite side. In addition, a wall plate portion 43 extending downward is formed at an end edge portion of the main plate portion 42 opposite to the inclined plate portion 41.

  A valve disposition space 44 in which the valve 22 is disposed is located below the partition plate portion 40 of the sandwiching holder 17, between both the sandwiching portions 36 and between both the operation plates 38.

  Each of the operation plates 38 has an engaging groove 46 that extends upward, and an engaging claw 45 (to be described later) of the design portion 13 is engaged with the lower end portion of each engaging groove 46. ing. Further, the operation plate 38 is formed with an operation projection 47 protruding inward at the lower end thereof.

  The sandwiching holder 17 is formed of a white resin having a high reflectance as a whole, and as a result, the ceiling surface of the valve disposition space 44 that is the lower surface of the partition plate portion 40 is disposed above the valve 22. Thus, a reflector portion 48 having a high reflectivity for reflecting the light of the bulb 22 to the indoor side is configured. Of course, not only the reflector portion 48 but also the inner surfaces of the two operation plates 38 and the inner surface of the wall plate portion 43 facing the bulb arrangement space 44 reflect the light of the bulb 22 indoors with high reflectivity.

  The design portion 13 includes a synthetic resin base housing 51 and a synthetic resin lens cover 52 that can be attached to and detached from the lower surface side of the base housing 51.

  A valve housing chamber 54 penetrating vertically is formed in the base housing 51, and the valve 22 and the reflector portion 48 provided in the functional unit 12 are inserted into the valve housing chamber 54 from above, and these are the upper portions. Is blocked. A transparent or translucent light projecting portion 53 of the lens cover 52 is disposed in the lower range of the valve storage chamber 54. A switch housing chamber 55 penetrating vertically is formed in the base housing 51, and the switch 23 provided in the functional unit 12 is housed in the switch housing chamber 55. The hatched area shown in FIG. 4 is the existence range of the reflector portion 48 in the valve storage chamber 54 in the functional portion 12 attached to the base housing 51, and the lens cover 52 is projected to the reflector portion 48. The light part 53 opposes.

  The lens cover 52 is provided with an operation button 57 exposed from a hole portion 56 formed adjacent to the light projecting portion 53, and the operation button 57 corresponds to the switch 23 housed in the switch housing chamber 55. Touched. As a result, the switch 23 is switched ON / OFF or the like by operating the operation button 57.

  The base housing 51 is formed with a plurality of engaging claws 45 projecting laterally on both sides thereof, and these engaging claws 45 are formed on the operation plate 38 of the function unit 13. The groove 46 can be engaged.

  In addition, on both side portions of the base housing 51, window portions 59 communicating with the valve storage chamber 54 are formed, and the operation convex portions 47 formed on the operation plate 38 of the function portion 13 are formed in these window portions 59. Can be arranged.

  The upper surface side around the base housing 51 is a contact portion 51 a, and when the base housing 51 is fitted into the opening 15 of the ceiling plate 14, the contact portion 51 a is the opening of the ceiling plate 14. 15 is brought into contact with the lower surface of the edge portion. Further, around the base housing 51, a plurality of fitting projections 61 that are divided into two so as to protrude outwardly from the inside of the contact portion 51 a are formed, and the base housing 51 is attached to the ceiling plate 14. When fitted into the opening 15, these fitting convex portions 61 are fitted into fitting concave portions 62 described later of the ceiling plate 14.

  The base housing 51 has an engaging portion 64 at one end and an engaging claw 65 that can be elastically deformed at the other end, and the base housing 51 is fitted into the opening 15 of the ceiling plate 14. At this time, in a state where the engaging portion 64 is first engaged with the upper surface of the ceiling plate 14, the engaging claw 65 is engaged with the upper surface of the ceiling plate 14 while being elastically deformed. The engaging claw 65 sandwiches the edge of the opening 15 of the ceiling plate 14 with the contact portion 51 a, and the base housing 51 is attached to the ceiling plate 14.

  In addition, the edge part of the opening part 15 is made into the protrusion part 15a by which the edge part of the opening part 15 was bent upwards over the circumferential direction, and protruded. A plurality of fitting recesses 62 for fitting the fitting protrusions 61 of the base housing 51 described above are formed in the protrusion 15a.

  Next, the case where the vehicle interior illumination lamp 11 having the above structure is assembled to the ceiling plate 14 will be described. The vehicular interior illumination lamp 11 can be attached to a vehicle having a plurality of specifications with different clamping thicknesses of the ceiling plate 14, and is provided below the clamping plate portion 37 according to the clamping thickness of the ceiling plate 14. Plural types of sandwiching holders 17 having different protrusion amounts are prepared, and the design portion 13 and the lamp unit 16 are made common to the difference in sandwiching thickness of the ceiling plate 14, and only the sandwiching holder 17 is replaced. Correspond with. For example, a base grade car sandwich holder 17 whose ceiling plate 14 is made of a molded resin material, and a high grade with a thick, soft material on the ceiling surface, which is decorated with fabric sheets, flocking, etc. A pinch holder 17 to be assembled to the specification vehicle is prepared. At this time, when the ceiling plate 14 is, for example, a composite plate of a hard material and a soft material, the sandwiching holder 17 corresponding to the sandwiching thickness considering the flat portion of the soft material is used.

  First, as described above, the one set according to the sandwiching thickness of the ceiling board 14 is selected from a plurality of kinds of sandwiching holders 17 having different downward projection amounts of the sandwiching plate part 37, and this sandwiching is performed. The lamp unit 16 that is made common regardless of the sandwiching thickness of the ceiling plate 14 is attached to the housing recess 31 of the holder 17. That is, all the engaging claws 29 correspond to the accommodating recess 31 of the clamping holder 17 while the bulb 22 is inserted into the bulb insertion opening 32 and the switch 23 is inserted into the switch insertion opening 33. Until it engages with the end of the engaging groove 34. Then, the lamp unit 16 comes into contact with the partition plate portion 40 in which the unit housing 21 constitutes the bottom of the housing recess 31, and is integrally attached to the sandwiching holder 17 so that the functional unit 12 is connected to the sandwiching holder 17. Will be configured.

  On the other hand, the design portion 13 is engaged in a state where the engaging portion 64 is engaged with the opening portion 15 while the fitting convex portion 61 is fitted in the fitting concave portion 62 of the opening portion 15 of the ceiling plate 14. When the claw 65 is elastically deformed and fitted into the opening 15, the engaging portion 64 and the engaging claw 65 are engaged with the edge of the opening 15 of the ceiling plate 14, and the design portion 13 is attached to the ceiling plate 14. Installed.

  Then, the functional part 12 is put on the fitted design part 13 from above. If it does in this way, while the operation board 38 of the function part 12 will be arrange | positioned on the both sides | surfaces of the design part 13, the valve | bulb 22 and the reflector part 48 will enter in the valve storage chamber 54. FIG.

  In this state, if the function portion 12 is further pushed down to the design portion 13 side, the operation plate 38 rides on the engaging claw 45, whereby the operation plate 38 is elastically deformed outward. The claw 45 enters the engagement groove 46 of the operation plate 38 and engages the end thereof, and the clamping plate portion 37 formed on the clamping portion 36 of the functional unit 12 contacts the upper surface of the ceiling plate 14. The protruding portion 15 a formed on the edge portion of the opening portion 15 of the ceiling plate 14 is sandwiched together with the contact portion 51 a of the design portion 13. In this state, the lower surface of the stepped portion 67 on the inner side of the clamping plate portion 37 of the clamping portion 36 abuts on the upper surfaces of all the fitting convex portions 61 of the design portion 13.

  As a result, the functional unit 12 and the design unit 13 are engaged and integrated with each other, the valve 22 and the reflector unit 48 are stored in the valve storage chamber 54, and the switch 23 is stored in the switch storage chamber 55. Thus, the vehicular lamp 11 is assembled to the ceiling board 14 (see FIGS. 5 and 6).

  For each vehicle having a different thickness of the ceiling plate 14, the above-described operation is performed using the common lamp unit 16 and design unit 12 and the clamping holder 17 according to the thickness of the ceiling plate 14. Will be done. In the vehicle lamp 11 attached to the ceiling board 14 as described above, when the operation button 57 of the design portion 12 is operated, the switch 23 is pressed, and when the bulb 22 is turned on, the light is transmitted to the lens cover. The light is irradiated into the lower room through the light projecting portion 53 of 52. At this time, the light irradiated upward from the bulb 22 is also well reflected by the reflector portion 48 of the sandwiching holder 17 and is irradiated into the lower chamber through the light projecting portion 53 of the lens cover 52.

  Next, the operation | work at the time of the maintenance of the vehicle interior illumination light 11 of the said structure is demonstrated.

  In order to disassemble the vehicle interior illumination lamp 11 for maintenance, first, the lens cover 52 of the design portion 13 is removed. Subsequently, the operation convex part 47 which protrudes in the valve storage chamber 54 of the base housing 51 is pressed from the inside. If it does in this way, the operation board 38 will be elastically deformed outside, the engagement groove | channel 46 will remove | deviate from the engagement nail | claw 45, and the engagement state of the design part 13 and the function part 12 will be cancelled | released.

  In this state, when the functional unit 12 and the design unit 13 are separated from each other, the functional unit 12 is separated from the design unit 13, and the valve 22 and the switch 23 are pulled out from the valve storage chamber 54 and the switch storage chamber 55, respectively. The part 12 is separated from the design part 13.

  And the maintenance of the function part 12 and the design part 13 can be performed by separating the function part 12 and the design part 13 in this way.

  Furthermore, the lamp unit 16 is separated from the sandwiching holder 17 in the removed functional unit 12 as necessary. At this time, when a tool or the like is inserted into the engagement groove 34 that is pulled out below the clamping holder 17 and the engagement claw 29 of the lamp unit 16 is pushed to elastically deform the support plate portion 28, the engagement claw 29 is engaged. The engagement state with the groove 34 is released.

  In this state, when the lamp unit 16 and the sandwiching holder 17 are separated from each other, the lamp unit 16 is pulled away from the sandwiching holder 17 and the bulb 22 and the switch 23 of the lamp unit 16 are completely exposed.

  After the maintenance is completed, the lamp unit 16 is assembled to the sandwiching holder 17 if necessary, and then the base housing 51 of the design section 13 is fitted to the sandwiching holder 17 of the functional section 12 so as to sandwich the ceiling plate 14 as in the case of assembly. Will be included.

  Thus, the functional unit 12 and the design unit 13 are engaged and integrated with each other, the valve 22 is stored in the valve storage chamber 54, and the switch 23 is stored in the switch storage chamber 55. The lamp 11 is assembled again.

  As described above, according to the vehicle interior illumination lamp 11 according to the above-described embodiment, by fitting the design part 13 into the function part 12 via the ceiling plate 14, the function part 12 and the design part 13 are Since they are assembled to each other via the ceiling plate 14 and attached to the ceiling plate 14, the assembling workability of the functional unit 12 and the design unit 13 can be greatly improved. Thereby, the normal assembly workability | operativity in a production line can be aimed at, and productivity can be improved.

  The functional unit 12 includes a sandwiching holder 17 that is fitted with the design portion 13 and sandwiches the ceiling plate 14 with the design portion 13, a valve 22, a switch 23, and a wire harness connecting portion 25. The lamp unit 16 includes the bulb 22, the switch 23, and the wire harness connecting portion 25 even if a difference in the clamping allowance occurs when a plurality of different ceiling panels 14 are used depending on the specifications. Without changing the basic specifications of 16, only the holding holder 17 is prepared in accordance with the holding allowance, and is changed depending on the holding thickness of the ceiling plate 14, thereby ensuring an appropriate holding state. be able to. Therefore, component costs can be suppressed.

  Furthermore, since the sandwiching holder 17 is provided with a white and high-reflectance reflector 48 that is disposed on the upper side of the bulb 22 and reflects the light from the bulb 22, Reflectance is improved and illuminance can be increased. That is, it is necessary to cover the periphery of the bulb 22 with parts as much as possible to suppress light leakage to the back of the ceiling, but if it is a conventional one that sandwiches the ceiling plate with a functional portion having a bulb, Although it is necessary to cover the bulb with a design part having no degree of freedom in which the color is determined depending on the relationship, the illuminance cannot be said to be sufficient, but the functional part 12 is fitted with the design part 13 and the ceiling part 14 with the design part 13. Are sandwiched between a lamp holder 16 having a bulb 22, a switch 23, and a wire harness connection portion 25 and attached to the clamp holder 17. The degree of freedom of color is increased, and the reflector portion 48 can be provided in the sandwiching holder 17 having a high degree of freedom of shape and color, so that the reflectance of light around the bulb 22 is improved and the illuminance is increased. That.

  In addition to forming the reflector portion 48 in white, it is possible to further increase the illuminance by performing a process for increasing the reflectivity such as glossing, aluminum vapor deposition plating, mirror finish, etc., or combining them appropriately. Become. Further, it is possible to reflect light diffusely by providing irregularities on the surface of the reflector 48 or roughening the surface by applying texture. Furthermore, since the light projection state into the vehicle interior can be adjusted by changing the sandwiching holder 17 in this way, the light projection state can be changed in accordance with the specifications of the ceiling board 14, and the vehicle grade can be improved. Combined lighting effects can be selected.

  In contrast to the above, as shown in FIGS. 7A and 7B, the sandwiching plate portion 37 that also serves as a contact portion of the sandwiching holder 17A to the ceiling plate 14 is integrally formed with the hinge portion 35. In addition, adjustment may be performed according to the sandwiching thickness by using a spacer 39 that is connected to the sandwiching plate portion 37 by a hinge portion 35 so as to be folded back. As shown in FIGS. 8 (a), 8 (b) and 9, the spacer 39 is folded back at the hinge portion 35 and engaged with the locking receiving portion 39a and the locking projection 37a. The folded state is maintained, and as shown in FIG. 10 (with the plate thickness t of the spacer 39 added), it comes into contact with the contact portion on the upper surface of the protrusion 15a of the ceiling plate 14. Therefore, the sandwiching holder 17A may be assembled without bending the spacer 39 on a ceiling plate having a sandwich thickness different from the ceiling plate 14 that does not require the plate thickness t of the spacer 39. In this way, by selecting use / non-use of the spacer 39, even if there are a plurality of types of clamping thicknesses of the ceiling plate 14, it is possible to cope with each clamping margin and to ensure an appropriate clamping state. it can. Therefore, the number of management points of the sandwiching holder 17A is halved, and the part cost can be further suppressed. As shown in FIG. 7B, when each spacer 39 is not used, the sandwiching holder 17A is mounted on the ceiling plate in a state where the hinge portion 35 is cut along the dotted line XX ′ and the spacer 39 is cut off. 14 may be assembled to the ceiling plate 14 with the spacers 39 not being cut out and connected to the sandwiching holder 17A.

  In the above description, the push-type switch 23 has been described as an example. However, even if the clamping allowance changes, if the assembly position of the clamping holder 17 can be adjusted and the positions of the design portion and the operation portion can be made constant, the slide It is also possible to apply a switch or a seesaw switch.

It is the disassembled perspective view seen from diagonally downward which shows the structure of the vehicle interior illumination lamp which is embodiment of this invention. It is the disassembled perspective view seen from diagonally upward which shows the structure of the room illumination lamp of FIG. It is sectional drawing which shows the principal part of the room lamp of FIG. It is a bottom view which shows the principal part of the room illumination lamp of FIG. It is the perspective view seen from diagonally below which shows the structure of the room lamp of FIG. It is the perspective view seen from diagonally upward which shows the structure of the room lamp of FIG. (A) is the perspective view which looked at an example of the clamping holder which has a foldable spacer from diagonally downward, (b) is the perspective view which looked at the clamping holder of Fig.7 (a) from diagonally upward. (A) is the perspective view which looked at the clamping holder by which the spacer was turned in the hinge part from diagonally downward, (b) is the perspective view which looked at the clamping holder of Fig.8 (a) from diagonally upward. . It is a side view of the clamping holder shown by Drawing 8 (a) and (b). It is sectional drawing which shows the principal part of the room illumination lamp in which the clamping holder of FIG. 9 was integrated. It is the disassembled perspective view seen from diagonally downward which shows the structure of the vehicle interior lighting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Vehicle interior lighting lamp 12 Function part 13 Design part 14 Ceiling board 16 Lamp unit 17 Clamping holder 22 Incandescent bulb (light source)
48 Reflector

Claims (4)

A vehicle having a functional part having a light source and a design part provided on the indoor side, and being assembled to each other via a ceiling board by fitting the design part into the functional part and sandwiching the ceiling board Indoor lighting,
The functional unit includes: a sandwich holder that is fitted with the design portion and sandwiches the ceiling plate with the design portion; and a lamp unit that has the light source and is attached to the sandwich holder. Vehicle interior lighting.   2. The vehicular interior illumination lamp according to claim 1, wherein the sandwiching holder is provided with a reflector portion having a high reflectance that is disposed above the light source and reflects light from the light source.   The vehicle interior illumination lamp according to claim 1 or 2, wherein the sandwiching holder includes a foldable spacer hinged to a contact portion with the ceiling plate. A vehicle having a functional part having a light source and a design part provided on the indoor side, and being assembled to each other via a ceiling board by fitting the design part into the functional part and sandwiching the ceiling board A method for fixing an interior lighting for a vehicle,
The functional part is divided into a sandwiching holder in which the design part is fitted and the ceiling part is sandwiched with the design part, and a lamp unit having the light source and attached to the sandwiching holder,
The vehicle interior illumination lamp fixing method according to claim 1, wherein the design portion and the lamp unit are made common to the difference in the sandwiching thickness of the ceiling plate, and the sandwiching holder is replaced.

Images