JP2020138712A - Lamp mounting structure of vehicular back door and vehicular back door - Google Patents

Abstract

To provide a lamp mounting structure of a vehicular back door capable of mounting a lamp unit including a light source and a light diffusion part, in an accommodation space between an inner panel and an outer panel, and capable of replacing the lamp unit when it is at an end of life or the like.SOLUTION: In a lamp mounting structure A of a vehicular back door, a lamp unit 40 is disposed in an accommodation space 18 between an outer panel 20 and an inner panel 10, a light transmission part 25 is provided in a portion where a light of the lamp unit 40 of the outer panel 20 is to be transmitted, and the light of the lamp unit 40 is transmitted from the light transmission part 25. The inner panel 10 is provided with: a partition wall 16 vertically mounted with respect to the outer panel 20, and partitioning between the accommodation space 18 and a cabin space at a vehicular central side; and an insertion hole 19 penetrating the partition wall 16 to the accommodation space 18. The lamp unit 40 is provided with: a fixing part 41 fixed to the partition wall 16; an insertion part 42 inserted into the accommodation space 18 via the insertion hole 19; a light emission part 44a emitting the light from the insertion part 42; and a light diffusion part 45 for diffusing the light emitted from the light emission part 44a.SELECTED DRAWING: Figure 3

Description

The present invention relates to a lamp installation structure for a vehicle back door and a vehicle back door.

Conventionally, a lamp unit, particularly a rear lamp, is provided inside a vehicle back door, and a vehicle back door has been proposed that realizes an integrated design of the lamp unit and the vehicle back door.

FIG. 6 shows a lamp structure of a vehicle back door that has been conventionally implemented. In this vehicle back door, the LED lamp unit 104 is arranged in the gap 103 between the inner panel 101 and the outer panel 102. The LED lamp unit 104 is provided on the inner surface of the outer panel 102. The portion of the outer panel 102 corresponding to the LED lamp unit 104 is the translucent portion 105, and the light opaque film 106 is formed except for the translucent portion 105. A light diffusing unit 107 is provided on the inner surface of the light transmitting unit 105, and the light of the light source is emitted to the rear outside the vehicle via the light diffusing unit 107 to recognize the lighting of the light transmitting unit 105.

Further, as another example, a vehicle back door of Patent Document 1 is known. To outline this back door, the lamp installation structure disclosed in FIG. 8 has inner pillars on both sides of the window opening 15 of the inner panel 7 (the reference numerals are the reference numerals in the drawings of the literature; the same applies hereinafter). It is arranged in the accommodation space S having a trapezoidal cross section of the portion 27. This lamp installation structure has a conical trapezoidal lamp convex portion 87 that is recessed into the accommodation space S from the bottom surface portion 27c of the inner pillar portion 27, and the lamp convex portion 87 is moved up and down so as to face the lamp convex portion 87. A reflector 91 having an inverted shape is provided by a light opaque film 77 formed on the inner surface of the outer panel. Insertion holes 89 and 93 are formed in the convex portion 87 for the lamp and the reflector 91, and the light source (halogen lamp) 85 is inserted therethrough. The portion of the outer panel corresponding to the light source 85 is a translucent portion 63 in which the light opaque film 77 is not formed, and the frontage of the convex portion 87 for the lamp is closed by the cover member 95.

Further, the lamp installation structure disclosed in FIG. 9 of the vehicle back door of Patent Document 1 has a structure similar to that of FIG. 8, and is the same as that of FIG. 8, the lamp convex portion 87, the LED lamp 67, and FIG. It has a light diffusing portion 83 having substantially the same shape as the reflector 91, a translucent portion 63 having the same shape as that of FIG. 8, and a cover member 95.

JP-A-2016-175565, FIGS. 8, 9

The conventional lamp installation structure of the vehicle back door shown in FIG. 6 has a configuration in which the LED lamp unit 104 is attached to the outer panel 102 before the inner panel 101 and the outer panel 102 are bonded to each other. Therefore, in order to replace a part or all of the LED lamp unit 104 due to the life of the lamp or the dirt on the light emitting surface, it is necessary to remove the adhesive between the inner panel 101 and the outer panel 102. Therefore, there is a problem that this structure requires a large-scale work.

In the lamp installation structure disclosed in FIGS. 8 and 9 of the vehicle back door of Patent Document 1, even if the cover member 95 can be removed and the light sources 85 and 67 in the lamp convex portion 87 can be replaced. , There is a problem that the reflector 91 or the light diffusing unit 83 cannot be replaced. In this way, there is no proposal to install a lamp unit that combines a light source and a light diffusing member in the gap between the inner panel and the outer panel after the inner panel and the outer panel are bonded to form a vehicle back door.

Therefore, in the technique of Patent Document 1, if the light diffusing portion 83 and the like can be exchanged together with the light sources 85 and 67, it is necessary to provide a hole significantly larger than these and perform the mounting or removing work. , The effect on strength etc. was large.

The present invention has been made to solve such a problem, and a lamp unit combining a light source and a light diffusing unit can be installed in a storage space between an inner panel and an outer panel, and the lamp unit can be installed. It is an object of the present invention to provide a lamp installation structure for a vehicle back door and a vehicle back door that can be replaced.

In the lamp installation structure of the vehicle back door according to the present invention, in order to achieve the above object, the lamp unit is arranged in the accommodation space between the outer panel and the inner panel, and the light of the lamp unit of the outer panel is desired to be transmitted. In the lamp installation structure of the back door for vehicles, which is provided with a translucent portion and allows the light of the lamp unit to be transmitted from the translucent portion.
The inner panel is provided with a partition wall that stands up against the outer panel and separates the accommodation space from the space inside the vehicle interior on the center side of the vehicle, and an insertion hole formed through the partition wall to the accommodation space. The lamp unit diffuses the fixed portion fixed to the partition wall, the insertion portion inserted into the accommodation space through the insertion hole, the light emitting portion that emits light from the insertion portion, and the light emitted from the light emitting portion. It is characterized by having a light diffusing unit.

Further, in order to achieve the above object, the vehicle back door according to the present invention is arranged on the vehicle interior side of the outer panel made of a transparent plate and the inner panel which forms a storage space for a lamp unit between the outer panel. The inner panel is provided with the above-mentioned lamp installation structure.

According to the present invention, a lamp unit that combines a light source and a light diffusing unit can be easily installed in the accommodation space between the inner panel and the outer panel, and the lamp unit can be replaced. Structural and vehicle backdoors can be provided.

It is a schematic perspective view of the back door for a vehicle which concerns on 1st Embodiment of this invention. FIG. 2 is a sectional view taken along line II-II in FIG. It is an enlarged view of the lamp installation structure of the part III surrounded by a circle in FIG. It is an enlarged view of the lamp installation structure of the same place as FIG. 3 relating to the vehicle back door of the 2nd Embodiment of this invention. It is sectional drawing of the main part of the back door for a vehicle of the 3rd Embodiment of this invention. It is a schematic cross-sectional view which looked at the horizontal cross section at the height where the lamp unit is attached, which concerns on the lamp installation structure of the back door for a vehicle of the conventional example.

Hereinafter, embodiments of the vehicle back door according to the present invention will be described with reference to the drawings. The configuration of the lamp installation structure will be described through the description of the configuration of the vehicle back door.

[First Embodiment]
FIG. 1 shows an overall perspective view of the vehicle back door 1 according to the first embodiment as viewed from the rear side. FIG. 2 is a sectional view taken along line II-II in FIG.
The vehicle back door 1 shown in FIG. 1 is provided with a translucent window portion 4, and rear lamps 5 are arranged on both left and right side portions of the window portion 4.

As shown in FIG. 2, the vehicle back door 1 includes an inner panel 10 having a window opening 14 formed on the upper side of the vehicle, and an outer panel 20 attached to the inner panel 10 on the rear side of the vehicle. The outer panel 20 is assembled with an outer upper panel 21, a window panel portion 22, and an outer lower panel 23.

The window panel portion 22 is made of a transparent plate made of transparent glass or transparent plastic, and constitutes the window portion 4 by closing the window opening 14. As shown in FIG. 2, the window panel portion 22 is provided with a light-impermeable film 26 in a portion other than the window portion 4 and the translucent portion 25 described later. Since the rear lamps 5 are arranged at both sides of the window portion 4 (the portion corresponding to the window opening 14) of the window panel portion 22, the positions on both sides of the window portion 4 are the portions where the light of the lamp unit 40 is desired to be transmitted. , The light-transmitting portion 25 in which the light-impermeable film 26 is not formed.

FIG. 3 is an enlarged view showing an example of the lamp installation structure. The lamp installation structure A shown in FIG. 3 is provided on both sides of the window opening 14 in an inner pillar portion B formed in a shape in which inner panels 10 project from the window panel portion 22 toward the vehicle interior.

The inner panel 10 extends outward from the panel main body 11 that covers the passenger compartment side of the outer panel 20, the panel peripheral rib 12 that stands on the outer panel 20 side from the panel main body 11, and the tip of the panel peripheral rib 12. The panel peripheral flange 13, the window opening 14 opened at a predetermined position, the window opening forming rib 15 erected from the peripheral edge of the window opening 14 with respect to the outer panel 20, and the window opening forming rib. It has a window opening peripheral edge flange 17 extending from the tip of the 15 to the window opening 14 side. As shown in FIG. 3, the panel peripheral flange 13 and the window opening peripheral flange 17 are adhered to the outer panel 20 by the adhesive 27.

As shown in FIGS. 1 to 3, the inner pillar portion B is opened on the outer panel 20 side including the panel main body portions 11 on both sides of the window opening 14, the panel peripheral rib 12, and the window opening forming rib 15. It is a vertical groove structure and is closed by an outer panel 20.
The lamp installation structure A is provided in the inner pillar portions B on both sides, and the accommodation space 18 of the lamp unit 40 is provided by the panel main body portion 11, the panel peripheral rib 12, the window opening forming rib 15, and the outer panel 20. Is provided. Here, the window opening rib 15 erected with respect to the outer panel 20 serves as a partition wall 16 that partitions the accommodation space 18 and the space inside the vehicle interior on the vehicle center side in the vehicle width direction.

The lamp installation structure A shown in FIG. 3 is a structure in which the lamp unit 40 is inserted into the insertion hole 19 provided in the partition wall 16 and installed.
The lamp unit 40 includes a flange portion 41 as a fixing portion fixed to the partition wall 16, a housing 43 that is cantilevered and supported by the flange portion 41, and a light emitting portion 48 for radiating light from the lamp unit 40. It is provided with a light diffusing member 45 made of a lens or the like provided close to the light emitting surface 44a of the light emitting unit 48 in order to diffuse the light emitted from the light emitting unit 48.

The light emitting portion 48 has a light guide plate 44 having one surface closely supported by the housing 43 and a light emitting surface 44a provided on the other surface on the opposite side, and a light receiving end penetrating the flange portion 41, and a flange. A light source 46, which is arranged in the unit 41 and causes light to be introduced into the light input end of the light guide plate 44, is provided.
The housing 43, the light guide plate 44, and the light diffusing portion 45 form an insertion portion 42 that is inserted into the accommodation space 18 through the insertion hole 19. The light guide plate 44 is provided with a dot pattern so that, for example, one side of a highly transparent acrylic plate emits light on the surface. The dot pattern may be imparted by any of processing laser, silk printing, V-groove cutting, and molding. An LED can be used as the light source 46.

In order to mount the lamp unit 40 on such a lamp installation structure A, first, the lamp unit 40 is positioned at a window opening 14 as a work space partitioned by a partition wall 16 from the accommodation space 18 to the center side in the vehicle width direction. Then, the tip of the insertion portion 42 of the lamp unit 40 is inserted so as to face the insertion hole 19. By fixing the flange portion 41 to the edge portion of the insertion hole 19 of the partition wall 16, the insertion portion 42 can be installed and mounted in a state of projecting into the accommodation space 18.

The lamp unit 40 is provided with a light source 46 and a flange portion 41 on one end side, and the insertion portion 42 extends in a substantially linear shape or a curved shape toward the other end side. Therefore, the projected shape in the insertion direction is much smaller than the projected shape in the radiation direction of light orthogonal to the insertion direction. Therefore, the lamp unit 40 can be attached to and detached from the accommodation space 18 by the insertion hole 19 which is much smaller than the projected shape of the light of the lamp unit 40 in the radiation direction.

In order to light the rear lamp 5 by the lamp installation structure A, the light of the light source 46 is incident on the incoming light end of the light guide plate 44, and is repeatedly reflected inside the light guide plate 44 to be provided on the light emitting surface 44a. It emits light from a fine light projecting part. The radiated light is transmitted through the light diffusing portion 45 in a light diffusing state, and is radiated to the outside of the vehicle from the translucent portion 25 provided in the window panel portion 22, so that the rear lamp 5 can be turned on. By designing the light radiation area of the light radiation surface 44a of the light guide plate 44 and the shape of the light opaque film 26, the light seen from the light transmission portion 25 of the outer panel 20 seems to be designed. become.

As described above, according to the lamp installation structure A, after the inner panel 10 and the outer panel 20 are adhered with the adhesive 27, the lamp unit 40 in which the light source 46 and the light diffusing portion 45 are combined is attached to the inner panel 10 and the outer panel. It can be installed in the accommodation space between 20 and the lamp unit 40 can be replaced. That is, the flange portion 41 is detachably fixed to the edge portion of the insertion hole 19 of the partition wall 16. Therefore, the lamp unit 40 can be removed to replace the light source 46, clean the light guide plate 44, and replace or clean the light diffusing portion 45. Further, by removing the support member 47 from the flange portion 41, only the light source 46 can be replaced.

[Second Embodiment]
FIG. 4 is an enlarged view of a lamp installation structure at the same location as that of FIG. 3, relating to the vehicle back door of the second embodiment of the present invention. In the lamp installation structure of this embodiment, since the lamp unit 40 is installed close to the outer panel 20, the distance between the light diffusing portion 45 and the translucent portion 25 is smaller than that of the lamp installation structure of FIG. ing. Further, in the lamp installation structure of this embodiment, in order to accommodate the lamp unit 40 in the accommodation space 18, a large opening is provided in the partition wall 16, and the lamp unit 40 is inserted into the accommodation space 18 from this opening and mounted. There is.

The lamp unit 40 is fixed to the insertion hole 19 in the same manner as in FIG. 3, and the flange portion 41 is detachably fixed to the partition wall 16. Further, the lamp unit 40 is fixed in position with the insertion tip of the housing 43 abutting against the stepped portion 12a of the outer panel 20. Further, in the lamp unit 40, the edges of the housing 43 and the flange portion 41 continuously face the outer panel 20, and the seal member 50 abuts between them in a sealed state. Therefore, the light from the lamp unit 40 does not leak from between the housing 43 and the outer panel 20, and it is possible to prevent insects and the like from invading. In addition, the members of FIG. 4 that are the same as those of FIG. 3 are designated by the same reference numerals.

[Third Embodiment]
FIG. 5 is a schematic cross-sectional view of a main part of a vehicle back door according to a third embodiment of the present invention. In the lamp installation structure of this embodiment, a partition wall 16 that vertically separates the accommodation space 18 and the space inside the vehicle interior on the vehicle center side is erected with respect to the outer panel 20, and the lamp unit 40 is separated from the partition wall 16. It is configured to be installed by inserting it downward into the insertion hole 19.

As shown in FIG. 5, the upper surface of the partition wall 16 of the inner panel 10 has an upward slope with a gentle slope toward the outer panel 20, and the lamp unit 40 is attached to the insertion hole 19 provided in the upper surface. ing. The light of the light source (LED) 46 travels inside the light guide plate 44 hanging down in the accommodation space 18, diffuses and transmits through the light diffusing portion 45, and radiates from the translucent portion 25 of the outer panel 20 to the rear of the vehicle.

Even with such a configuration, the same effect as that of the first embodiment can be obtained, the lamp unit 40 can be removed from the upper surface portion 14 of the inner panel 10, and the lamp unit 40 can be attached / detached and light diffused when it is replaced. Cleaning of the part 45 can be easily performed. In addition, the members of FIG. 4 that are the same as those of FIG. 3 are designated by the same reference numerals.

According to the present invention, the lamp unit including the light source and the light diffusing part can be easily installed in the accommodation space between the inner panel and the outer panel, and the lamp unit can be freely replaced at the end of its life. It is useful for a vehicle back door in which the lamp unit is provided inside the vehicle back door and the integrated design of the lamp unit and the vehicle back door is realized.

1 Vehicle back door 10 Inner panel 14 Window opening 16 Partition wall 18 Storage space 19 Insertion hole 20 Outer panel 22 Window panel part 25 Translucent part 26 Light opaque film 30 Light source storage recess 40 Lamp unit 41 Flange part 42 Insertion part 44 Light guide plate 44a Light emitting surface 45 Light diffuser 46 Light source 47 Support member 48 Light emitting part A Lamp installation structure B Inner pillar part

Claims (3)

A lamp unit is arranged in the accommodation space between the outer panel and the inner panel, a light transmitting portion is provided at a portion of the outer panel where the light of the lamp unit is desired to be transmitted, and the light of the lamp unit is transmitted from the light transmitting portion. In the lamp installation structure of the back door for vehicles
The inner panel includes a partition wall that is erected with respect to the outer panel and separates the accommodation space from the space inside the vehicle interior on the center side of the vehicle, and an insertion hole provided in the partition wall so as to penetrate to the accommodation space. , Is provided,
The lamp unit includes a fixing portion fixed to the partition wall, an insertion portion inserted into the accommodation space through the insertion hole, a light emitting portion that emits light from the insertion portion, and a light emitting portion that emits light. A lamp installation structure for a vehicle back door, characterized in that it has a light diffusing portion that diffuses the light. The lamp unit according to claim 1, further comprising a light guide plate fixed to the insertion portion and a light source detachably provided for the insertion portion to introduce light into the light guide plate. Lamp installation structure for vehicle back doors. An outer panel made of a transparent plate and
An inner panel, which is arranged on the passenger compartment side of the outer panel and forms a storage space for a lamp unit with the outer panel, is provided.
A vehicle back door, characterized in that the inner panel is provided with the lamp installation structure according to claim 1 or 2.