JP2009096388A - Vehicular cabin luminaire and its structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular cabin luminaire and its structure capable of securing space for arranging wire harness irrespective of the configuration of a ceiling material and a housing or the like. <P>SOLUTION: The vehicular cabin luminaire 1 comprises a light guide bar 10, light sources mounted on both sides of the light guide bar, a housing 9 for housing at least the light guide bar and a wire harness 11 connected to the light sources. The housing includes a top wall part 12, side wall part 13 having translucency and bottom wall part 14 having shading nature, and the wire harness is arranged at the inner side of the bottom wall part. Also, this vehicular cabin lighting system comprises a vehicular ceiling material 3 and the vehicular cabin luminaire 1 mounted on the ceiling material, and the vehicular cabin luminaire is mounted on the ceiling material by providing a mounting hole 17 in the ceiling material, forming a boss 16 in the outside surface of the top wall part 12 and inserting the boss into the mounting hole. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle interior lighting fixture that is used by being attached to a ceiling material in a vehicle interior of a vehicle, and a vehicle interior lighting structure in which the vehicle interior lighting fixture is attached to a vehicle ceiling material. More specifically, the present invention relates to a vehicle interior lighting device that can easily secure a space for arranging a harness regardless of the shape of the ceiling material, the housing, and the like, and the vehicle interior lighting device is a ceiling. The present invention relates to a vehicle interior lighting structure attached to a material.

  Conventionally, in a vehicle such as a passenger car, an indoor lighting device is generally installed on the ceiling for the purpose of nighttime indoor lighting or the like. Further, in recent years, indoor lighting devices that are not merely intended for illumination in the passenger compartment but have a higher design and a more luxurious atmosphere in the passenger compartment are becoming widespread. As such an indoor lighting device, a relatively large area is obtained by combining a small number of relatively power-saving point light sources and a luminous body made of light-scattering light guiding resin, and using a relatively large area luminous body. An illumination module has been proposed in which an excellent design is provided by a luminous body that can illuminate evenly and shines in a light illumination state (see, for example, Patent Document 1).

  As shown in FIG. 7, the indoor lighting device 100 described in Patent Document 1 includes a housing 101 and a light source 102 accommodated in the housing, and the housing 101 is fixed in a form embedded in a ceiling trim 103. It is attached. Moreover, since this room lighting device 100 is a long body extending from the front side to the center of the ceiling of the vehicle, a plurality of harnesses and the like for connecting a plurality of light sources arranged in the front-rear direction of the vehicle. These harnesses are required, but these harnesses are disposed on the outer surface side of the upper part of the housing and are fixed by clips or the like.

JP 2005-186884 A

  However, in the above-described conventional indoor lighting device 100, since the harness is disposed and fixed on the outer surface side or the like of the upper portion of the housing 101, for example, when the space on the back surface side of the ceiling material is small, the housing Depending on the shape and the mounting structure to the roof panel, a space for arranging and fixing the harness may not be sufficiently secured.

  The present invention has been made in view of the above-described conventional situation, and it is possible to easily secure a space for arranging a harness regardless of the shape of a ceiling material, a housing, and the like. And an interior lighting structure for a vehicle including the same.

The present invention is as follows.
1. In a vehicle interior lighting device comprising: a light guide rod; a light source attached to at least one end of the light guide rod; a housing that houses at least the light guide rod; and a harness connected to the light source. The housing includes an upper wall portion, a light-transmitting side wall portion, and a light-shielding bottom wall portion, and the harness is disposed on the inner surface side of the bottom wall portion. Vehicle interior lighting equipment.
2. A harness clip is erected on the inner surface of the bottom wall portion, and the harness is disposed in the harness clip. The vehicle interior lighting device described in 1.
3. A light guide rod support portion is erected on the inner surface of the upper wall portion, and the light guide rod is supported by the light guide rod support portion. Or 2. The vehicle interior lighting device described in 1.
4). 2. The light guide rod support portion is translucent. The vehicle interior lighting device described in 1.
5). The upper wall portion and the side wall portion are integrally formed members, and the bottom wall portion is a separate member formed separately from the upper wall portion and the side wall portions. To 4. The vehicle interior lighting device according to claim 1.
6). The above-mentioned 1. The cross section of the housing has an axisymmetric shape. To 5. The vehicle interior lighting fixture of any one of these.
7). The vehicle interior lighting fixture according to any one of claims 1 to 6 attached to the ceiling material of the vehicle and the ceiling material, wherein the ceiling material is provided with an attachment hole, A vehicle interior lighting structure, wherein a boss is formed on an outer surface of a wall portion, the boss is inserted into the mounting hole, and the vehicle interior lighting fixture is attached to the ceiling member.

In the vehicle interior lighting device according to the present invention, since the harness is disposed on the inner surface side of the bottom wall portion, the shape of the ceiling material, the housing, and the like is compared with the case where the harness is attached to the outside of the housing as in the past. Regardless, the space for attaching the harness can be easily secured. Further, since the bottom wall portion is light-shielding, the harness is not visible from the passenger compartment, and the appearance of the lighting fixture is not impaired. Furthermore, there is no need for a separate housing for attaching the vehicle interior lighting fixture to the ceiling material, so that the weight can be reduced. In addition, since the light from the light source is indirect illumination that is irradiated from the translucent side wall portion into the vehicle interior, it becomes light and uniform irradiation light, can improve the design, and improve the interior of the vehicle interior You can also.
In addition, when a harness clip is erected on the inner surface of the bottom wall and the harness is arranged in the harness clip, a space for arranging the harness is secured, and the harness can be easily placed in the harness clip. Can be fixed.
Furthermore, when the light guide bar support is erected on the inner surface of the upper wall, and the light guide bar is supported by the light guide bar support, the light guide bar does not move due to vehicle shake or the like. The irradiation light from the light guide rod is stabilized, and the atmosphere in the passenger compartment is not impaired.
In addition, when the light guide bar support part has translucency, irradiation light from the light guide bar is not blocked by the light guide bar support part, and a sufficient amount of light efficiently enters the vehicle interior. Irradiated.
Further, when the upper wall portion and the side wall portion are integrally formed, and the bottom wall portion is a separate member formed separately from the upper wall portion and the side wall portion, the strength is higher. Since it can be set as a housing and the bottom wall part is a separate body, only this bottom wall part can be easily used as a light-shielding member.
In addition, when the cross section of the housing has a line-symmetric shape, the light from the light guide rod can be easily and more evenly radiated on both sides in the vehicle width direction, and the interior of the vehicle can be more evenly brightened. It can be.

  In the vehicle interior lighting structure of the present invention, a mounting hole is provided in the ceiling material, a boss is formed on the outer surface of the upper wall portion, and the boss is inserted into the mounting hole so that the vehicle interior lighting fixture is attached to the ceiling material. ing. Therefore, compared with the case where a large hole for accommodating the entire housing is formed in the ceiling material, it is possible to prevent the back side of the ceiling from being seen through the upper wall portion from the side wall portion, and to improve the aesthetic appearance. be able to.

Hereinafter, the present invention will be described in detail with reference to FIGS.
A vehicle interior lighting device of the present invention includes a light guide rod, a light source attached to at least one end of the light guide rod, a housing that houses at least the light guide rod, and a harness connected to the light source. The housing includes an upper wall portion, a light-transmitting side wall portion, and a light-shielding bottom wall portion, and a harness is disposed on the inner surface side of the bottom wall portion.

  The “light guide rod” is not particularly limited as long as the light from the light source can be efficiently propagated in the length direction, and the material and the cross-sectional shape thereof are not particularly limited. Examples of the material include highly transparent glass and resin. The light guide rod made of glass has better propagation than the light guide rod made of resin, and can sufficiently propagate light even with a long light guide rod. On the other hand, the light guide rod made of resin is lightweight, easy to process, excellent in handleability, withstands bending, and can also be bent. Examples of this resin include acrylic resin, polycarbonate resin, and polystyrene resin having excellent transparency.

  The “light source” is attached to at least one end of the light guide bar. The light source is not particularly limited, and examples thereof include a light emitting diode (hereinafter abbreviated as “LED”), a super luminescence diode, and the like, which are directional light sources. When the light guide bar is short, this light source may be attached only to one end thereof, but with a light guide bar or the like disposed between the overhead console attached to the ceiling of the vehicle and the dome lamp, It is preferable that it is attached to both ends. Thereby, it can be set as the light guide bar of more uniform illumination intensity over the full length of the light guide bar.

  The “housing” includes an upper wall portion, a side wall portion, and a bottom wall portion, and a light guide rod and a harness are accommodated in a space formed by these. The “upper wall portion” is a member whose outer surface is in contact with or close to the ceiling material when the vehicle interior lighting device is attached to the ceiling material of the vehicle. Good. The material of this upper wall part is not specifically limited, It can form with various synthetic resins.

  Moreover, it is preferable that the light guide rod support portion for supporting the light guide rod is erected on the inner surface of the upper wall portion. By disposing and supporting the light guide bar in the light guide bar support part, it is possible to suppress the movement of the light guide bar due to vehicle shaking or the like. Furthermore, it is preferable that the light guide rod support portion has translucency. Thereby, the irradiation light from the light guide bar is not shielded by the light guide bar support part, and the light can be efficiently irradiated in the vehicle interior. The light guide rod support portion may be formed integrally with the upper wall portion, and a molded body formed as a separate body is joined by using an adhesive, heat-sealed, screwed, or the like. Although it may be erected, it is preferably an integral member formed integrally with the upper wall portion. Furthermore, the light guide rod support portion may be provided over the entire length of the upper wall portion, or may be provided at intervals in the length direction (see FIGS. 4 and 5, at least the upper wall). The light guide rod support part is not erected on the end face part of the part.)

  The “side wall portion” is a member that transmits light from the light guide rod and is irradiated into the vehicle interior, and has translucency. Although the material of this side wall part is not specifically limited, For example, it can form with highly transparent synthetic resins, such as an acrylic resin, a polycarbonate resin, and a polystyrene resin. The light transmitted through the side wall is irradiated obliquely upward, laterally, and obliquely downward in the vehicle interior, but the vehicle interior may not be sufficiently bright depending on the amount of light irradiated from the light guide rod. In that case, it is preferable to form a light reflecting recess in the ceiling material and reflect the light downward from the concave surface of the light reflecting recess. Thereby, even with the same light guide rod, the interior of the vehicle can be brightened.

  The upper wall portion and the side wall portion may be an integral member integrally molded, or may be separate members molded separately from each other, but are preferably an integral member integrally molded. If it is an integral member, the number of parts is small, the number of processes can be reduced, and the strength of the housing can be increased. Further, when the upper wall portion and the side wall portion are integral members, the light guide rod support portion having the same translucency as the side wall portion can be obtained by forming the light guide rod support portion integrally. In addition, when the upper wall portion and the side wall portion are separate members, the method of integrating them is not particularly limited, and examples thereof include a method of bonding using an adhesive, heat sealing, and screwing. .

  The “bottom wall portion” has a light shielding property, and the light irradiated from the light guide bar toward the lower side of the vehicle interior is shielded. The material of the bottom wall portion is not particularly limited, and can be formed of various synthetic resins. When the bottom wall portion is a separate member formed separately from the side wall portion or the upper wall portion and the side wall portion, the bottom wall portion having a light shielding property can be obtained by using a resin having low translucency. On the other hand, when a highly transparent resin such as an acrylic resin is used, it is preferable to use a raw material resin containing a pigment or the like in order to obtain a bottom wall portion having sufficient light shielding properties. Furthermore, even if it is resin with low translucency, a pigment etc. can be mix | blended and it can also be set as the bottom wall part which has more sufficient light-shielding property. When using a raw material resin in which pigments and the like are blended in this way, it is preferable to set the type of pigment and the blending amount in consideration of the light shielding property and design property of the bottom wall portion.

  In addition, when the bottom wall part is an integral member formed integrally with the side wall part or the upper wall part and the side wall part, the bottom wall part has translucency similarly to the side wall part. Processing to do is necessary. The method for making the bottom wall portion light-shielding is not particularly limited, and examples thereof include methods such as attaching a light-shielding film and applying a light-shielding paint.

  As described above, the bottom wall portion may be an integral member formed integrally with the side wall portion or the upper wall portion and the side wall portion, or may be a separate member formed as a separate member, but is a separate member formed as a separate member. It is preferable. If it is a separate member, it can be easily made into a bottom wall portion having a light-shielding property by molding using a raw material resin blended with a pigment or the like as described above, and a separate process for light-shielding is performed. There is no need to do. When the bottom wall portion is a separate body, the method for fixing the bottom wall portion integrally with the side wall portion is not particularly limited. However, in consideration of maintenance management, the bottom wall portion is preferably fixed by a detachable method. As this detachable fixing method, a method of fitting recesses and flange portions provided at both end portions in the width direction of the side wall portion and the bottom wall portion (see FIGS. 3 to 5), and a screwing method Etc.

  The housing having the upper wall portion, the side wall portion, and the bottom wall portion preferably has a transversely symmetric shape in cross section. In particular, when the light guide bar has a line-symmetric shape such as a circle, and the light-guide rod is disposed at the center in the width direction of the housing, the cross-section of the housing has a line-symmetric shape. preferable. In this case, it is more preferable that the light guide rod support portion erected on the upper wall portion is also provided so that the cross section of the housing has a line-symmetric shape. With such a housing, the irradiation of light from the side wall portion is even on the right side and the left side, and the right side and the left side in the width direction of the passenger compartment can be evenly lit. .

  As described above, it is preferable that the cross section of the housing has a line-symmetric shape, but it does not necessarily have to have a line-symmetric shape. For example, when the cross-section of the light guide bar is asymmetric and / or even if the cross-section of the light guide bar is axisymmetric, the light guide bar is arranged biased to one side in the width direction of the housing In consideration of these, it is preferable that the housing has a uniform brightness on the right side and the left side in the width direction of the passenger compartment.

  The “harness” is disposed on the inner surface side of the bottom wall portion. The bottom wall portion is light-shielding, but at the same time, it is preferable that this harness is not visible from the passenger compartment, and it is preferable to consider this visibility when forming the bottom wall portion and processing for light shielding. . Furthermore, it is preferable that a harness clip is erected on the inner surface of the bottom wall portion, and the harness is disposed in the harness clip. As a result, it is possible to suppress harness sway, movement, and the like due to vehicle sway. The harness clip may be formed integrally with the bottom wall portion, and the formed body formed as a separate body is erected by a method such as bonding using an adhesive, heat-sealing, or screwing. Although it may be made, it is preferred that it is an integral member integrally formed with the bottom wall portion. Further, the harness clip may be provided over the entire length of the bottom wall portion or may be provided at intervals in the length direction (see FIG. 5, over the entire length of the bottom wall portion). A harness clip is erected.)

  The vehicle interior lighting structure of the present invention comprises a vehicle ceiling material and the vehicle interior lighting fixture of the present invention attached to the ceiling material, the ceiling material is provided with an attachment hole, and is provided outside the upper wall portion. A boss is formed on the surface, the boss is inserted into an attachment hole, and the vehicle interior lighting device is attached to a ceiling material.

  In this vehicle interior lighting structure, the ceiling material is only provided with an attachment hole for inserting the boss, and this attachment hole is also blocked by inserting the boss. Therefore, it is possible to suppress a decrease in ceiling rigidity due to the setting of the mounting opening of the vehicle interior lighting device, and when the ceiling surface is viewed from the vehicle interior, the back surface side of the ceiling material is not visible at all, and the back surface of the ceiling material Since various members arranged on the side cannot be seen, it is preferable in terms of design and the like.

Hereinafter, the present invention will be specifically described with reference to FIGS.
(1) Overview of interior lighting device for vehicle The interior lighting device 1 for a vehicle according to this embodiment is a long vehicle attached from the front side to the center of a ceiling material 3 of a passenger car as shown in FIG. This is a part of the indoor lighting device 2 (see FIG. 2).

(2) Configuration of interior lighting device for vehicle and attachment to ceiling material In the interior lighting device for vehicle 1 of this embodiment, a boss 16 is formed on the outer surface and light is guided to the inner surface as shown in FIG. The upper wall portion 12 on which the rod support portion 18 is erected, the side wall portion 13 formed integrally with the upper wall portion 12, and the upper wall portion 12 and the side wall portion 13 are formed as separate bodies, and are formed on the inner surface. The harness clip 15 is erected, and includes a bottom wall portion 14 in which flange portions provided at both end portions in the width direction of the side wall portion 13 are fitted and fixed to recesses provided at both end portions in the width direction. A housing 9, a light guide rod 10 supported by the light guide rod support portion 18, and a harness 11 disposed in the harness clip 15 are provided (see FIGS. 3 to 5).

  The vehicle interior lighting device 1 having the above-described configuration is provided between an overhead console 4 attached to the front side of a ceiling material 3 of a passenger car and a dome lamp 5 attached to a central portion (see FIGS. 1 and 2). ), A light guide rod 10 (see FIGS. 2 and 6) having LEDs 7 and 8 disposed at one end and the other end, one end and the other end of each of the housing 9 and the light guide rod 10, and the LED 7, 8 is fitted into a recess provided at the end of the overhead console 4 and a recess provided at the end of the dome lamp 5 (see FIG. 2), and the upper wall of the housing 9 The bosses 16 formed on the outer surface 12 can be inserted into the mounting holes 17 provided in the ceiling material 3 and attached to the ceiling material 3 (see FIG. 3). In this way, the vehicle interior lighting structure can be formed.

(3) Operation of the vehicle interior lighting device When the LEDs 7 and 8 are energized to emit light, the light propagates through the light guide rod 10 and is irradiated from the light guide rod 10. This irradiation light passes through the side wall 13 of the housing 9 and is irradiated as indirect light into the vehicle interior. Furthermore, the light irradiated obliquely upward from the light guide rod 10 is reflected as indicated by the arrow in FIG. 3 by the light reflecting recess 6 formed in the ceiling member 3, and this reflected light is also irradiated into the vehicle interior. The light reflecting recess 6 is made of a curved surface formed by bending the synthetic resin ceiling member 3 in the width direction over the entire length of the periphery of the mounting portion of the vehicle interior lighting device 1.

(4) Effects of Example According to the vehicle interior lighting device 1 of this example, the harness 11 is disposed in the harness clip 15 erected on the inner surface of the bottom wall portion 14 of the housing 9 as described above. Has been. Therefore, the harness 11 can be arranged without difficulty, and the harness 11 is not shaken or moved due to a vehicle shake or the like. Moreover, since the bottom wall part 14 is light-shielding, the harness 11 is not visible from the passenger compartment, and the design is not impaired. Furthermore, since a separate housing for attaching the vehicle interior lighting device 1 to the ceiling material 3 is not required, the number of parts can be reduced, the weight can be reduced, and the attachment to the ceiling material 3 is easy.

  The light from the light guide rod 10 passes through the side wall portion 13 and is irradiated obliquely upward, laterally, and obliquely downward, and the light irradiated obliquely upward is a light reflecting recess 6 formed in the ceiling material 3. The reflected light is irradiated obliquely downward. Therefore, the vehicle interior is irradiated only by indirect illumination with the transmitted light from the side wall portion 13 and the reflected light from the ceiling material 3, and the interior of the vehicle interior can be made a high-class atmosphere.

  In addition, in this invention, it can be set as the Example variously changed within the range of this invention according to the objective, a use, etc., without being restricted to said Example. For example, in the above-described embodiment, the light of the LEDs 7 and 8 is propagated from both ends of the light guide rod 10 and light is evenly irradiated over the entire length of the light guide rod 10. It can also be arranged. For example, only the LED 7 disposed at the end of the light guide bar 10 on the overhead console 4 side can be used. In this way, the front side (front seat side) of the vehicle interior is relatively bright and the rear The side (rear seat side) can be relatively dark.

  Further, in the above embodiment, the light guide rod 10 has a shape in which a part of a circular shape is cut when viewed in a cross section, so that the right side and the left side in the width direction of the passenger compartment have uniform brightness. As shown, the light guide rod support 18 is provided so as to be biased to one side in the width direction of the upper wall portion 12 of the housing 9, and the notched side of the light guide rod 10 is arranged to face the other side. However, the present invention is not limited to this, and a circular light guide rod 10 is used in a cross-sectional view, and the light guide rod 10 is installed in the center of the upper wall portion 12 of the housing 9 in the width direction. You may make it support by the rod support part 18. FIG.

  The present invention can be used as an interior lighting device for a vehicle such as a passenger car. In particular, since the harness is disposed and fixed on the inner surface side of the bottom wall portion of the housing, the harness can be easily disposed and fixed regardless of the shape of the housing. Moreover, since the light irradiated downward from the light guide bar is shielded and becomes indirect illumination, it is useful as a vehicle interior lighting device that has a high design and can provide a high-class atmosphere. In addition, the vehicle interior lighting fixture can be used as a vehicle interior lighting structure that is attached to a ceiling material of a vehicle that requires a high-class atmosphere, has a high design, and creates a high-class atmosphere.

It is a typical perspective view of the vehicle interior of the vehicle to which the vehicle interior lighting fixture is attached. It is a typical top view of the vehicle interior lighting device provided with the vehicle interior lighting fixture of an Example, an overhead console, and a dome lamp. It is a schematic diagram of the cross section of the vehicle interior lighting fixture of an Example. It is typical explanatory drawing of the cross section of a light guide rod and a housing, and the shape when a housing is seen from diagonally upward. It is a typical perspective view when the upper wall part and side wall part which are the integral members shape | molded integrally, and the bottom wall part shape | molded as a different body are decomposed | disassembled and it sees from upper direction. When disassembling the top wall and side walls, which are integrally molded parts, the light guide bar with light sources attached to both ends, the bottom wall formed separately, the overhead console, and the dome lamp, when viewed from above It is a typical perspective view of. It is a schematic diagram of the cross section of the conventional room lighting apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1; Vehicle interior lighting fixture, 11; Harness, 12; Upper wall part, 13; Side wall part, 14: Bottom wall part, 15; Harness clip, 16; Boss, 17: Mounting hole, 18; DESCRIPTION OF SYMBOLS 2; Vehicle interior lighting device, 3; Ceiling material, 4; Overhead console, 5; Dome lamp, 6; Light reflection recessed part, 7: Front side light source, 8; Rear side light source, 9; Light stick.

Claims (7)

In a vehicle interior lighting device comprising: a light guide rod; a light source attached to at least one end of the light guide rod; a housing that houses at least the light guide rod; and a harness connected to the light source.
The housing includes an upper wall portion, a light-transmitting side wall portion, and a light-shielding bottom wall portion, and the harness is disposed on the inner surface side of the bottom wall portion. Vehicle interior lighting equipment.   The vehicle interior lighting device according to claim 1, wherein a harness clip is erected on an inner surface of the bottom wall portion, and the harness is disposed in the harness clip.   The vehicle interior lighting device according to claim 1, wherein a light guide rod support portion is provided upright on an inner surface of the upper wall portion, and the light guide rod is supported by the light guide rod support portion.   The vehicle interior lighting device according to claim 3, wherein the light guide rod support portion has translucency.   The upper wall portion and the side wall portion are integrally formed members, and the bottom wall portion is a separate member formed separately from the upper wall portion and the side wall portions. The vehicle interior lighting device according to any one of 4.   The vehicle interior lighting device according to any one of claims 1 to 5, wherein a cross section of the housing has a line-symmetric shape. A vehicle ceiling material, and the vehicle interior lighting device according to any one of claims 1 to 6 attached to the ceiling material,
An attachment hole is provided in the ceiling material, a boss is formed on the outer surface of the upper wall portion, the boss is inserted into the attachment hole, and the vehicle interior lighting device is attached to the ceiling material. A vehicle interior lighting structure.

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