JPH0733294Y2 - Vehicle lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The vehicle lighting device of the present invention will be described in detail according to the following items.

A. Industrial fields of use B. Overview of the device C. Prior art [Figs. 9 and 10] D. Problems to be solved by the device [Figs. 9 and 10] E. To solve the problems Means F. Embodiment [Figs. 1 to 8] a. Overview b. Lens body c. Cover body d. Light source body e. Mounting on spoiler G. Effect of device (A. Industrial application field) The present invention relates to a new vehicular lamp. Specifically, in a vehicle lamp in which a printed circuit board that is long in the left-right direction is arranged in the lamp chamber, and a large number of light emitting diodes are supported on the printed circuit board as a light source, the components necessary for supporting the printed circuit board in the lamp chamber are The present invention aims to provide a new vehicular lamp by reducing the number of parts, and reducing the number of parts and the number of assembling steps to reduce the cost.

(B. Outline of the Invention) In a vehicle lighting device of the present invention, a boss seat is erected at both ends of a member that defines a lamp chamber, and the boss seats are axially arranged on opposite surfaces of the boss seat. A fitting groove having an opening extending to the projecting end and having an opening at the projecting end, the both ends of the printed circuit board supporting the light emitting diode are fitted in the mating groove, and the above fitting of the printed circuit board is performed by a screw screwed to the projecting end of the boss seat. By preventing the mating groove from slipping out, the member that was conventionally interposed between both ends of the printed circuit board and the boss seat is unnecessary, thereby reducing the number of parts and the number of assembly steps. It can contribute to cost reduction.

(C. Prior Art) [FIGS. 9 and 10] A vehicle lamp having a large number of light emitting diodes arranged on a printed circuit board as a light source is used.

9 and 10 show an example a of such a vehicular lamp.

Reference numeral b denotes a lens body formed of a transparent synthetic resin, which has a recess c that is long in the left-right direction and is open upward, and the upper surface opening of the recess c is closed by a cover body d to form a lamp chamber e. Has been formed.

Reference numeral f denotes a light source body, and a large number of light emitting diodes h, h, ...
Is supported.

i, i are brackets made of synthetic resin, and the fitting grooves j, j
Main parts k, k having the above-mentioned main parts k, and non-fitting grooves j of the main parts k, k and mounting pieces m, m protruding from the upper end portion on the j side and having mounting holes 1, 1 are integrally formed. Become.

Reference numerals n and n denote boss seats provided upright from both end portions of the lens body b, and screw holes o, o are formed in the upper end surface of the boss seats.

Then, the left and right edges of the printed circuit board g are fitted in the fitting grooves j, j of the brackets i, i, and the printed circuit board g and the brackets i, i are bonded. Then, the mounting pieces m, m of the brackets i, i are stacked on the upper end surfaces of the boss seats n, n, and the mounting screws p, p inserted through the mounting holes 1,
Is screwed into the screw holes of the boss seats n and n with o, so that the left and right ends of the printed circuit board g are attached to the brackets i and i.
It is fixed to the boss seats n, n through.

As described above, the light source body f is arranged in the lamp chamber e.

(D. Problems to be Solved by the Invention) [FIGS. 9 and 10] By the way, in the vehicle lamp a described above, the light source body f is used.
For arranging the brackets in the lamp chamber e, dedicated parts called brackets i, i are required, and a large number of parts are required correspondingly, and a step of adhering the brackets i, i to the printed circuit board g is required. It is necessary, and these things inevitably increase costs.

(E. Means for Solving the Problems) In order to solve the above problems, the vehicle lighting device of the present invention is
Boss seats are provided upright on both ends of one of the members that define the lamp chamber, and mating grooves that extend in the axial direction of the boss seats and open at the projecting ends are formed on the surfaces of the boss seats that face each other. Fit both ends of the printed circuit board supporting the light emitting diode into the fitting groove,
A screw screwed to the protruding end of the boss seat prevents the printed board from coming off the fitting groove.

Therefore, in the vehicular lamp of the present invention, the member that is interposed between the both ends of the printed circuit board and the boss seat for mounting the printed circuit board is not necessary, which reduces the number of parts and assembles them. The number of man-hours is also reduced, which can greatly contribute to cost reduction.

(F. Embodiment) [Figs. 1 to 8] The details of the vehicular lamp of the present invention will be described below with reference to the illustrated embodiment. In the illustrated embodiment, the present invention is applied to a stop lamp 1 attached to a rear spoiler of an automobile.

(A. Outline) Reference numeral 2 in the figure denotes a rear spoiler of an automobile, which is formed with a rear end lower surface, a rearward and downward opening, and a notch 3 that is long in the left-right direction, and a stop light that complements the notch 3. 1 is attached.

(B. Lens Body) 4 is a lens body, which is formed of a transparent thermoplastic synthetic resin by molding. Since the lamp 1 is a stop lamp, the lens body 4 is colored and transparent in the functional color red.

The bottom plate 5 of the lens body 4 is curved so as to gradually move upward from the rear end (the front-rear direction of the lamp 1 is the front of the car and the front of the car is rear). The curve gradually deepens and rises upward from about one third position.
Then, the rising portion 6 becomes an emission surface portion from which light is emitted.

Reference numeral 7 denotes a rear wall that is erected from a position approximately one-third forward from the rear end of the bottom plate 5. The left and right end portions 8, 8 of the rear wall 7 are bent into a substantially L shape when viewed from above, and end edges 8a,
8a is located in front of the remaining portion of the rear wall 7.

9, 9 are both side edges 8a, 8a of the rear wall 7 among the both side edges of the bottom plate 5.
From the front end to the front end, the upper ends of the side walls 9 and 9, the upper end of the rear wall 7 and the upper end of the emission surface portion 6 are formed to be substantially in the same plane to form an upper opening edge. The concave portion 10 is formed in the portion surrounded by these.

A shallow fitting notch 11 is formed inside the upper opening edge of the lens body 4 described above.

A plurality of protrusions are provided on the inner surface of the bottom plate 5 near the rear wall 7.
12, 12, ... Are arranged side by side in the left-right direction and are formed at appropriate intervals. And each protrusion 12, 12, ...
The engaging grooves 13, 13, ...

The boss seats 14 and 14 in the shape of a substantially column are integrally erected from the bottom plate 5 on the outer sides of the protrusions 12, 12, ... Protrusions 15 extending in the up-down direction on the projections 12 at both ends and the portions facing the projections 12,
15 are integrally formed, and fitting grooves 15a, 15a extending in the up-down direction and reaching the upper end surface are formed on the surfaces of the ridges 15, 15 facing each other. The fitting grooves 15a, 15a are located on the line of arrangement of the engaging grooves 13, 13, ... Of the protrusions 12, 12 ,. Further, the boss seats 14 and 14 are formed with screw holes 16 and 16 opened at the upper end surfaces thereof.

17 and 17 are the bottom plates 5 along the outer sides of both end portions 8 and 8 of the rear wall 7.
It is a boss portion that has been raised from the top, and has projecting portions 17a, 17a, which are slightly smaller, at its upper end, and insertion holes 18, 18 are formed. Inside the boss portions 17, 17, holes 19 and 19 having a diameter larger than that of the insertion holes 18 and 18 and opened at the lower end are formed.

Reference numeral 20 is an extraction hole formed at a position near the center of the rear wall 7 in the left-right direction.

(C. Cover Body) 21 is a cover body having a substantially strip-like shape that is long in the left-right direction, and is made of synthetic resin of the same system as the material synthetic resin of the lens body 4.

The cover body 21 is shaped to fit into the fitting notch 11 formed at the upper opening edge of the lens body 4, and has a thickness slightly larger than the height of the fitting notch 11, for example, about 0.2 mm. Have

Then, the cover body 21 is fitted into the fitting notch 11 formed at the opening edge of the lens body 4, and in that state, the entire circumference thereof is fixed to the upper opening edge of the lens body 4 by ultrasonic fusion. It
As described above, since the thickness of the cover body 21 is made slightly larger than the height of the fitting notch 11, the ultrasonic vibration horn of the cover body 21 is attached to the cover body 21 even if a slight manufacturing dimensional error occurs on both sides. It can be reliably brought into contact with the peripheral portion, and reliable ultrasonic fusion can be performed.

(D. Light Source Body) 22 is a light source body, which is composed of a printed circuit board and a light emitting diode supported by the printed circuit board.

Reference numeral 23 denotes a printed circuit board, which has a strip-like shape with a small vertical width and a long horizontal direction.

The light emitting diodes 24, 24, ... Are attached to the front surface of the printed board 23 in a line in the left-right direction.

25 is a power supply cord connected to the printed conductor on the printed circuit board 23, whereby the light emitting diodes 24, 24 ,.
・ ・ Power is supplied to.

Before the cover body 21 is attached to the lens body 4, the printed board 23 engages with the engaging grooves 13, 13, ... Formed on the inner surface of the bottom plate 5 of the lens body 4 at its lower edge portion. Further, both edge portions thereof are fitted into the fitting grooves 15a, 15a of the boss seats 14, 14 provided upright on the lens body 21. As a result, the printed circuit board 23 is positioned with respect to the lens body 4.

Then, washers 26, 26 are placed on the upper end surfaces of the boss seats 14, 14, the mounting screws 27, 27 are inserted into the washers 26, 26 and screwed into the screw holes 16, 16, and the washers 26, 26 are The upper ends of the fitting grooves 15a, 15a are closed to prevent the printed circuit board 23 from coming off the fitting grooves 15a, 15a. If the heads of the mounting screws 27, 27 are large enough to close the upper ends of the fitting grooves 15a, 15a, the use of washers 26, 26 can be omitted.

In this way, the light source body 22 is arranged in the lamp chamber (recess) 10.

Reference numeral 28 is a rubber grommet attached to a drawing hole 20 formed in the rear wall 7 of the lens body 4, reference numeral 29 is a connector attached to the rear edge upper surface of the bottom plate 5 of the lens body 4, twenty five
Is drawn out of the recess 10 through the grommet 28 and connected to the connector 29.

(E. Attachment to Spoiler) Then, the stop light 1 described above is attached to the inside of the notch 3 of the spoiler 2 as follows.

That is, the mounting screws 30, 30 are bosses formed on the lens body 4.
Inserted from below into holes 19 and 19 of 17 and 17, and insert hole 1
After being inserted into the spoiler 2, the nuts 31, 31 are embedded in the ceiling surface of the notch 3 of the spoiler 2 and are screwed into the ceiling surface of the notch 3 of the spoiler 2. Be worn.

(G. Effect of the Invention) As is clear from the above description, the vehicle lighting device of the present invention has a long printed circuit board arranged in the left-right direction in the lamp chamber, and supports a large number of light emitting diodes on the printed circuit board. A vehicular lamp used as a light source, in which a boss seat is erected at both ends of a member defining a lamp chamber, and projecting ends extending in the axial direction of the boss seat on mutually opposing surfaces of the boss seat. Form a fitting groove that is open at the end, fit both ends of the printed board into the fitting groove of the boss seat, and use the screw threaded to the protruding end of the boss seat to remove the printed board from the fitting groove. It is characterized by having been prevented.

Therefore, in the vehicular lamp of the present invention, the member that is interposed between the both ends of the printed circuit board and the boss seat for mounting the printed circuit board is not necessary, which reduces the number of parts and assembles them. The number of man-hours is also reduced, which can greatly contribute to cost reduction.

The specific structure in the above-mentioned embodiment is merely an example of the embodiment of the present invention, and the technical scope of the present invention is not limitedly interpreted by these.
It goes without saying that various modifications can be made without departing from the spirit of the present invention.

[Brief description of drawings]

1 to 7 show an example of an embodiment of a vehicular lamp according to the present invention, in which FIG. 1 is a plan view showing a part of the lamp, and FIG. 2 is a front view showing a part of the lamp. The figure shows III-II in Figure 1.
An enlarged sectional view taken along line I, FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG. 1, FIG. 5 is an enlarged sectional view taken along line VV of FIG. 1, and FIG. FIG. 7, FIG. 7 is an enlarged perspective view showing exploded main parts, FIG. 8 is a perspective view showing an example of use, and FIGS. 9 and 10 show an example of a conventional vehicular lamp. 9th
The drawing is a cross-sectional view, and FIG. 10 is a perspective view of a main part. Explanation of symbols 1 ... Vehicle lamp, 4 ... One of the members defining the lamp chamber, 10 ... lamp chamber, 14 ... boss seat, 15a ... fitting groove, 23 ...
… Printed circuit board, 24 …… Light emitting diode, 27 …… Screw

Claims (1)

[Scope of utility model registration request] 1. A vehicular lamp in which a printed circuit board, which is long in the left-right direction, is arranged in a lamp chamber, and a large number of light-emitting diodes are supported on the printed circuit board to serve as a light source, the member defining the lamp chamber. A boss seat is erected at both ends of the boss seat, and a fitting groove extending in the axial direction of the boss seat and opening at a projecting end is formed on the surfaces of the boss seat facing each other. A vehicular lamp characterized in that both ends of the board are fitted together, and a screw threaded on the projecting end of the boss seat prevents the printed board from coming off from the fitting groove.