JPH07362Y2 - 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 [Fig. 8] D. Problems to be solved by the device [Fig. 8] E. Means for solving the problem F. Example [Fig. 1 to 7] a. Overview b. Lens body c. Cover body d. Printed circuit board e. Mounting on spoiler G. Effect of device (A. Industrial application field) The present invention is a novel vehicle lamp With regard to the above, in detail, an engaging step portion necessary for alignment with a spoiler which is a supporting member is formed in a portion that does not affect the light distribution.

(B. Outline of the Invention) The vehicular lamp of the present invention has a lens body which is formed of a transparent synthetic resin and has a concave portion which is opened in a surface adjacent to a light emitting surface. The opening of the lens body was covered with the cover body by fitting the peripheral portion of the cover body into the shallow fitting notch formed inside the upper opening edge of
A vehicular lamp attached to the lower side of a spoiler, in which a thick portion protruding from the opening surface of the lens body to the side opposite to the lens body is formed and engaged at the end portion of the cover body located on the emission surface side. When attaching the vehicular lamp to the spoiler as a stepped portion, the engaging stepped portion of the cover body is engaged with the engaging ridge formed on the lower surface side of the spoiler to be positioned. It is possible to prevent the deformation due to the change in the wall thickness from occurring in the portion where the light distribution is affected, such as the emission surface of the lens body.

(C. Prior art) [Fig. 8] There is a signal lamp for an automobile, in which a notch that opens forward and downward or upward is formed at an edge portion of a spoiler of an automobile, and the notch is complemented to be attached.

FIG. 8 shows an example of such an automobile signal light a.

Reference numeral b is a lens body formed of transparent synthetic resin, and has a concave portion c opened upward. A notch e for fitting the cover body d is formed on the inner edge of the upper opening, and
A front surface portion, that is, a front edge of an upper end portion of an emission surface portion f through which light is emitted is cut out and an engagement step portion g is formed therein.

Then, the peripheral edge of the cover body d is fitted into the notch e, and in this state, the cover body d is fixed to the lens body b by adhesion, welding, or the like.

Reference numeral h denotes a light source body arranged in a space formed by the lens body b and the cover body d, and includes a printed circuit board i and a large number of light emitting diodes j, j supported by the printed circuit board i.
... (only one of them is shown in the drawing).

Reference numeral k denotes an inner lens arranged between the light source body h and the emission surface portion f.

Reference numeral 1 denotes a spoiler, which has a notch m opened at the tip and the lower surface thereof, and the vehicle signal light a is fitted in the notch m in a fitted manner. At this time, the engaging protrusion n protruding from the top edge of the ceiling surface of the notch m is engaged with the engaging step portion g formed on the lens body b, whereby the vehicle signal light a for the spoiler l. Is positioned.

(D. Problem to be Solved by the Invention) [FIG. 8] However, in the vehicle lamp a described above, the engagement step portion g and the notch e are provided at the upper end portion of the emission surface portion f of the lens body b. Since it has to be arranged in the thickness direction, the thickness of the upper end portion of the emission surface portion f is inevitably increased.

By the way, if the thickness of the synthetic resin molded product increases,
There is a significant difference in the cooling rate between the surface and the middle, which causes uneven shrinkage during cooling and deformation of the surface. Then, such a deformation spreads to the emission surface portion f, which causes a disadvantage that the light distribution is disturbed.

In addition, since the material resin of the lens body b is relatively expensive, if a thick portion is formed on the lens body b, a large amount of molding material is required, and there is an inconvenience such as an increase in cost.

(E. Means for Solving the Problems) In order to solve the above problems, the vehicle lighting device of the present invention is
A shallow fitting notch formed inside the upper opening edge of the lens body in which the light source body is arranged A vehicle lamp which is attached to the lower side of a spoiler, in which an opening of a lens body is covered with the cover body by fitting a peripheral portion of the cover body to The engaging step portion of the cover body is attached to the spoiler by forming a thick portion protruding from the opening surface of the lens body to the side opposite to the lens body as an engaging step portion. The engaging projections formed on the lower surface side are engaged and positioned.

Therefore, in the vehicular lamp of the present invention, since the cover body in which the thick portion is formed to form the fitting step portion for positioning is a member that does not affect the light distribution, Even if the surface is slightly deformed due to the formation, the light distribution is not likely to be disturbed. Further, since the cover body not related to the light distribution can be formed of a relatively inexpensive material, even if a part of the cover body is made thick, the cost is hardly affected.

(F. Embodiment) [FIGS. 1 to 7] 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 has a notch 3 that is open rearward and downward and is long in the left-right direction on the lower surface of the rear end, and that the notch 3 complements the stop light. 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 curved in 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 engagement grooves 13, 13, ... Are protrusions 12, 12, ...
The opening is open not only on the upper surface but also on the left and right side surfaces, but only the engaging grooves 13a, 13a formed at the ends are closed at the ends.

Reference numerals 14, 14, ... Are engagement protrusions for positioning, which are formed at appropriate places among the portions between the protrusions 12, 12 ,.

15 and 15 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 rises from the top of the boss portion, and projecting portions 15a, 15a, which are slightly smaller, are formed at the upper end of the boss portion, and insertion holes 16, 16 are formed. In addition, inside the boss portions 15 and 15, holes 17 and 17 having a larger diameter than the insertion holes 16 and 16 and opening at the lower end are formed.

Reference numeral 18 is an extraction hole formed at a position closer to the center of the rear wall 7 in the left-right direction.

(C. Cover Body) 19 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 19 has a shape to be fitted in a 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

Further, a protrusion 20 is formed on the front edge of the upper surface of the cover body 19. That is, the front edge portion of the cover body 19 is thick due to the protrusion 20.

Then, the cover body 19 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 19 is made slightly larger than the height of the fitting notch 11, the ultrasonic vibration horn of the cover body 19 is attached to the cover body 19 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.

Then, the protrusion 20 of the cover body 19 projects upward from the upper opening surface of the lens body 4, and the front surface 20a thereof serves as an engagement step portion.

(D. Printed Circuit Board) 21 is a light source, which is composed of a printed circuit board and a light emitting diode supported by the printed circuit board.

Reference numerals 22 and 22 denote printed circuit boards, which are strip-shaped with a small vertical width and long in the left-right direction. The front surface is green.

Engaging notches 23, 23, ... For positioning are formed at the lower edges of the printed boards 22, 22 at appropriate intervals.

The light emitting diodes 24, 24, ... Are attached to the front surfaces of the printed circuit boards 22, 22 in a line in the left-right direction.

Reference numerals 25 and 25 are jumper cords connecting between the printed circuit boards 22 and 22, and the coating thereof is green.

Reference numeral 26 is a power supply cord connected to the printed conductors on the printed circuit boards 22 and 22.
Power is supplied to 4, ...

In such printed circuit boards 22, 22, the cover body 19 is the lens body 4
Before being attached to the lower edge, the lower edge is engaged with the engaging grooves 13a, 13a and 13, 13, ... Formed on the inner surface of the bottom plate 5 of the lens body 4, and the lower edge is engaged. The notches 23, 23, ... Are engaged with the engaging protrusions 14, 14, ... Formed on the bottom plate 5 of the lens body 4 to position the lens body 4 in the left-right direction.

27 is an elastic body made of an elastic material such as sponge or rubber, and is compressed between the upper edge of the printed circuit boards 22 and 22 and the lower surface of the cover body 19.

As described above, the printed boards 22, 22 are held in a sandwiched state by the lens body 4 and the cover body 19.

In addition, the front surface of the printed circuit boards 22, 22 and the jumper cord 25,
Since the coating of 25 is made green, it looks black when seen through the red lens body 4, and is inconspicuous.

Numeral 28 is a rubber grommet attached to the drawing hole 18 formed in the rear wall 7 of the lens body 4, 29 is a connector attached to the rear end upper surface of the bottom plate 5 of the lens body 4, 26
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.

Reference numeral 30 denotes a positioning engagement ridge projectingly provided on the tip edge of the ceiling surface of the notch 3 of the spoiler 2.

Then, the stop lamp 1 is engaged with the engagement step portion 20a formed at the tip of the upper surface thereof from the inside of the engagement protrusion 30 of the spoiler 2, whereby the stop lamp 1 is positioned with respect to the spoiler 2. It

Therefore, the mounting screws 31 and 31 are inserted into the holes 17 and 17 of the boss portions 15 and 15 formed in the lens body 4 from below, and further, the insertion holes
After being inserted into the spoiler 16, the nuts 32, 32 attached to the ceiling surface of the notch 3 of the spoiler 2 in a recessed manner are screwed together, whereby the stop lamp 1 is mounted in the notch 3 of the spoiler 2. Be worn.

(G. Effect of the Invention) As is apparent from the above description, the vehicle lighting device of the present invention has a lens body formed of a transparent synthetic resin and having a concave portion opened on the surface adjacent to the light emission surface. The light source body is arranged in the concave portion, and the opening of the lens body is covered with the cover body by fitting the peripheral edge portion of the cover body into the shallow fitting notch formed inside the upper opening edge of the lens body. A vehicular lamp attached to the lower side, wherein an engagement step portion is formed by forming a thick portion protruding from the opening surface of the lens body to the side opposite to the lens body at an edge portion located on the emission surface side of the cover body. When attaching the vehicular lamp to the spoiler, the engagement step portion of the cover body is engaged with the engagement protrusion formed on the lower surface side of the spoiler to be positioned. .

Therefore, in the vehicular lamp of the present invention, since the cover body in which the thick portion is formed to form the engaging step portion for positioning is a member that does not affect the light distribution, Even if the surface is slightly deformed due to the formation, the light distribution is not likely to be disturbed. Further, since the cover body not related to the light distribution can be formed of a relatively inexpensive material, even if a part of the cover body is made thick, the cost is hardly affected.

In the above embodiment, the light source body has a large number of light emitting diodes supported on the printed circuit board, but the present invention is not limited to this.

Besides, the specific structures in the above-described embodiments are merely examples 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 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. Figure is III-I in Figure 1.
An enlarged sectional view taken along line II, FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 1, FIG. 5 is an enlarged sectional view taken along line VV in FIG. 1, and FIG. FIG. 7 is an enlarged perspective view showing a disassembled state, FIG. 7 is a perspective view showing an example of use, and FIG. 8 is a sectional view showing an example of a conventional vehicle lamp. Explanation of reference numerals 1 ... Vehicle lamp, 2 ... Spoiler, 4 ... Lens body, 6 ... Exit surface, 10 ... Recess, 11 ... Mating notch, 19 ...
… Cover body, 20 …… Thick part, 20a …… Engagement step, 21 ……
Light source body, 30 ... Spliner engagement protrusion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Yoshiaki Ishida 500 Kitawaki, Shimizu City, Shizuoka Prefecture Koito Manufacturing Co., Ltd. Shizuoka Plant (56) Bibliography Sho 62-129702 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A light source body is disposed in a concave portion of a lens body which is made of a transparent synthetic resin and has an opening on a surface adjacent to a light emission surface, and the light source body is formed inside an upper opening edge of the lens body. A light fixture for a vehicle, which is attached to a lower side of a spoiler, in which an opening of a lens body is covered with the cover body by fitting a peripheral edge portion of the cover body into a shallow fitting notch, and the emission surface side of the cover body. At the edge located at, the thick part protruding from the opening surface of the lens body to the side opposite to the lens body is formed as an engagement step, and when the vehicular lamp is attached to the spoiler, the cover body is engaged. The vehicular lamp characterized in that the step portion is positioned by engaging with an engaging protrusion formed on the lower surface side of the spoiler.