JP2008044431A - Vehicle interior lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance production efficiency and the reduction of an assembling error of a part by simplifying work when a constitution part of a lighting system is assembled to a base member. <P>SOLUTION: The vehicle interior lighting system is provided with the base member 22 of the lighting system 20; a printed board 24 having a light source (bulb 24a) for illumination and switches and assembled to the inside of the base member 22; a mounting member (bezel 26) for fixing the board to the base member 22; and a lens 28 for illumination fixed to a surface side in a state that the lens covers the inside of the base member. The printed board, the mounting member and the lens are assembled to the base member, respectively, so as to be superposed from either of front and back sides. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an in-vehicle illumination device represented by a map lamp of an overhead console installed on a ceiling above a driver's seat in an automobile.

In this type of lighting device, when various components are assembled to the base member, a printed circuit board having a light source and switches for illumination is assembled from the back side of the base member, and a plurality of pieces are attached to the base member. It is fixed with screws. On the other hand, the lens for illumination is assembled | attached from the front side (design surface) of the base member. That is, each component of the lighting device is assembled from both the front and back sides of the base member.
In addition, about the general illuminating device provided in the ceiling side in a vehicle, the technique disclosed by patent document 1, for example is well-known.
JP-A-8-230561

  In an illumination device such as a map lamp in an overhead console, when the components are assembled to the base member, at least the printed circuit board and the lens require extra labor to reverse the front and back of the base member. This leads to a decrease in production efficiency, particularly in repetitive work on the assembly line, and also tends to cause defective products due to component assembly mistakes.

  The present invention is intended to solve such problems. The purpose of the present invention is to simplify the work when assembling the components of the lighting device to the base member, thereby improving the production efficiency and assembling the components incorrectly. And so on.

The present invention is for achieving the above object, and is configured as follows.
A first aspect of the present invention is an in-vehicle lighting device, which includes a base member of the lighting device, a light source for lighting and switches, and a printed circuit board that is incorporated inside the base member, and the substrate is fixed to the base member. And an illumination lens that is fixed to the surface of the base member while covering the inside of the base member. These printed circuit boards, mounting members, and lenses are assembled to the base member so as to be stacked from either one of the front and back sides.

  According to this configuration, when assembling the printed circuit board, the mounting member, and the lens with respect to the base member, it is not necessary to reverse the front and back of the base member, and the work can be simplified. As a result, the production efficiency can be improved, and the occurrence of defective products due to wrong assembly of parts can be reduced by simplifying the assembly work.

  According to a second invention, in the first invention, the printed circuit board, the mounting member, and the lens are assembled to the base member in this order from the front side of the base member. The printed circuit board has a push switch for turning on and off the light source, and the lens also functions as an operation member of the push switch.

  As a result, the direction of the force for operating the lens when switching the push switch is the same as the assembly direction of the printed circuit board with respect to the base member. For this reason, the operating force received by the push switch is received by the base member, which eliminates the need for screw tightening for fixing the base member and the printed circuit board, improving workability and reducing costs.

  According to a third invention, in the second invention, the printed circuit board has a slide switch for adjusting the illuminance of the light source, and the mounting member faces the front side through the opening of the lens, and slides relative to the mounting member. A knob for operating the switch is assembled so as to be slidable from the rear of the lens.

  In this case, it is possible to assemble the base member including the knob for operating the slide switch from the front side, and the assembling work is further simplified.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of an automobile overhead console as viewed from the front side (design side). The configuration of the overhead console shown in this drawing is roughly divided into a console box 10 and a lighting device 20. The console box 10 is for storing eyeglasses and other small items therein, and includes a lid 12 that can be opened and closed from the front side. The illumination device 20 is a map lamp, for example, and can be operated to turn on / off illumination and adjust illuminance from the front side.

  FIG. 2 is an external perspective view showing the components of the lighting device 20 in an exploded manner. FIG. 3 is a cross-sectional view in the direction of arrows AA in FIG. As is clear from these drawings, the base member 22 of the lighting device 20 is resin-molded integrally with the main body portion of the console box 10. And the base member 22 has the box-shaped space part 22a open | released by the front side. The same number of through-holes 22b into which four locking claws 26a of a bezel 26 (to be described later) can be individually inserted are formed in the bottom plate portion constituting the space 22a (FIG. 2).

  The printed circuit board 24 (subassembly) incorporated in the space 22a of the base member 22 has two bulbs 24a, one slide switch 24b, and two push switches 24c, which are light sources of the lighting device 20. The slide switch 24b is located approximately at the center of the printed circuit board 24, and two valves 24a and two push switches 24c are located on both sides thereof. Both push switches 24c can turn on and off the energization of both valves 24a, and the slide switch 24b can adjust the illuminance of both valves 24a.

  The printed circuit board 24 is provided with four through holes 24d into which the respective concave portions 26b of the bezel 26 described below can be individually inserted (FIG. 2). In a state where the printed circuit board 24 is incorporated in the space 22 a of the base member 22, each through hole 22 b of the base member 22 and each through hole 24 d of the printed circuit board 24 are set to coincide with each other.

  The resin bezel 26 incorporated in the space 22a of the base member 22 includes four locking claws 26a on the back side thereof (FIG. 2). These locking claws 26a can be inserted into the through holes 24d of the printed circuit board 24 and the through holes 22b of the base member 22 as described above. Then, the respective locking claws 26a inserted into the respective through holes 22b of the base member 22 are locked (snap fit) to the base member 22 (the bottom plate portion of the space portion 22a) so as to be prevented from coming off.

  On the front side of the bezel 26, a recess 26b for incorporating the slide switch knob 30 is provided. Further, the bezel 26 is hollow, and an insertion hole 26c leading to the hollow is formed at the bottom of the recess 26b (FIG. 3). The back side of the bezel 26 is open except for the portions where the respective locking claws 26a are formed, and the slide switch 24b of the printed circuit board 24 is accommodated in the hollow.

  The illumination lens 28 is assembled to the surface side of the base member 22 in a state of covering the space 22 a of the base member 22. The front side of the bezel 26 is fitted into an opening 28a opened at the center of the lens 28 (FIG. 3). Both sides of the opening 28a in the lens 28 are bent by the elasticity of the material, and serve as an operation surface 28b for turning on and off the push switches 24c of the printed circuit board 24. On the other hand, the slide switch knob 30 includes a coupling portion 30 a coupled to the slide switch 24 b of the printed circuit board 24 through the insertion hole 26 c of the bezel 26.

Next, a procedure for assembling each component of the lighting device 20 will be described.
First, the printed circuit board 24 is set in the space 22a of the base member 22, and then the bezel 26 is assembled. As for the assembly of the bezel 26, as already described, each locking claw 26a of the bezel 26 is inserted into each through hole 24d of the printed circuit board 24 and each through hole 22b of the base member 22, so that each locking claw 26a is Locks to the base member 22. Therefore, the printed circuit board 24 is firmly fixed to the base member 22 while being sandwiched between the base member 22 and the bezel 26. The bezel 26 corresponds to an “attachment member” for fixing the printed circuit board to the base member in the present invention.

  In the state where the printed circuit board 24 is fixed to the base member 22 by the bezel 26, the slide switch 24b of the printed circuit board 24 is contained in the hollow of the bezel 26 as described above (FIG. 3). Therefore, after the lens 28 is assembled to the base member 22 while covering the space 22a, the slide switch knob 30 is assembled from the opening 28a of the lens 28 to the recess 26b of the bezel 26. At this time, the coupling portion 30a of the knob 30 is coupled to the slide switch 24b through the insertion hole 26c of the bezel 26 (FIG. 3). Both operation surfaces 28b of the lens 28 are opposed to both push switches 24c of the printed circuit board 24, respectively.

  In a state where the respective components of the lighting device 20 are assembled in this way, pressing one of the operation surfaces 28b of the lens 28 alternately turns on / off the corresponding push switch 24c, thereby turning on / off the valve 24a. Can be switched. On the other hand, the illuminance of both valves 24a can be adjusted by sliding the knob 30 located in the recess 26b of the bezel 26 and operating the slide switch 24b.

  As is clear from the above description, the printed circuit board 24, the bezel 26, the lens 28, and the knob 30 that are components of the lighting device 20 are assembled to the base member 22 so as to be stacked from the front side. There is no need to invert the front and back of the base member 22 inside. In the assembly line of the lighting device 20 and the like, the labor efficiency is considerably reduced and the production efficiency is improved, and the simplification of the assembly work reduces the incidence of defective products due to wrong assembly of parts.

  Further, according to this assembly structure, the direction in which the operation surface 28b of the lens 28 is pushed to switch both push switches 24c of the printed circuit board 24 is the same as the direction in which the printed circuit board 24 is assembled to the base member 22. Therefore, the operating force received by the slide switch 24b of the printed circuit board 24 can be received by the base member 22, and screw tightening for fixing the printed circuit board 24 becomes unnecessary.

Although the best mode for carrying out the present invention has been described above with reference to the drawings, this embodiment can be easily changed or modified without departing from the spirit of the present invention.
For example, the lighting device 20 of the present invention is not limited to an overhead console map lamp or the like, and can be applied to various in-vehicle lighting. Further, as a switching means of the push switch 24 c, a configuration in which a dedicated operation member is assembled on the surface side of the lens 28 instead of the operation surface 28 b of the lens 28 may be adopted. However, even in this case, the same function as described above can be obtained by making the direction in which the dedicated operation member is pressed and the direction in which the printed circuit board 24 is assembled.

External perspective view of overhead console Disassembled perspective view of the components of the lighting device Sectional view in the direction of arrow AA in FIG.

Explanation of symbols

20 Illumination device 22 Base member 24 Printed circuit board 24a Bulb (light source)
24b Slide switch 24c Push switch 26 Bezel (Mounting member)
28 lenses

Claims (3)

  A base member of a lighting device, a printed circuit board that has a light source and switches for illumination, and is incorporated in the base member, a mounting member for fixing the substrate to the base member, and an inner part of the base member In the vehicle, the printed circuit board, the mounting member, and the lens are assembled to the base member so as to be stacked from either one of the front and back sides. Lighting equipment. An in-vehicle lighting device according to claim 1,
A printed circuit board, a mounting member, and a lens are assembled to the base member in this order from the front side of the base member, and the printed circuit board has a push switch for turning on and off the light source, and the lens is a push switch. An in-vehicle illumination device that also functions as an operation member. An in-vehicle lighting device according to claim 2,
The printed circuit board has a slide switch for adjusting the illuminance of the light source, and the mounting member faces the front side through the opening of the lens. An in-vehicle lighting device that can be slid.

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