JP2001158290A - Marker lamp device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a marker lamp device for a vehicle capable of preventing the unevenness in luminous intensity in lighting, and easily manufacturable and having superior durability. SOLUTION: This marker lamp device comprises a flexible printed board having an LED element 28 on its surface, a soft and light transmitting surface side member 24 placed on a surface side of the flexible printed board 23, a soft reverse side member placed at a reverse side of the flexible printed board 23 for holding the flexible printed board 23 with the surface side member 24, and a soft housing member 26 molded around the flexible printed board 23, the surface side member 24 and the reverse side member 25 in a state that at least a surface 24a of the surface side member 24 is exposed to the external.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular marker lamp device using an LED element.

[0002]

2. Description of the Related Art Some marker lamp devices installed in vehicles such as automobiles and motorcycles use LED elements as light emission sources. As an example, there is a marker light device described in Utility Model Registration Publication No. 2547656. This marker lamp device is a device in which a flexible printed circuit board having an LED element mounted on its surface is fitted into a concave portion formed in a lamp body made of a flexible material such as rubber, and a transparent and flexible lens is further fitted into the concave portion. It is. The flexible printed circuit board is held in a space defined between the lamp body (recess) and the lens.

[0003]

However, in the above structure, since the flexible printed circuit board is not fixed to the lamp body, the flexible printed circuit board moves within the lamp body, and the luminous intensity of the LED element at the time of lighting is uneven. Otherwise, there is a possibility that durability may be deteriorated due to excessive force acting on the flexible printed circuit board. In addition, since the lens has a structure that is fixed to the lamp body by bonding or welding, it takes a lot of time to assemble the lens. In addition, the lens is liquid-tight to secure the lens to protect the flexible printed circuit board from rainwater. And manufacturing is difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and can prevent unevenness in luminous intensity at the time of lighting, and has excellent durability and is easy to manufacture. The purpose is to provide.

[0005]

According to a first aspect of the present invention, there is provided a vehicle marker light device comprising: a flexible printed circuit board having an LED element mounted on a surface thereof; A front side member having flexibility and translucency applied to the front side of the flexible printed board, and a flexible printed board together with the front side member having flexibility applied to the back side of the flexible printed board. A backside member to be sandwiched, and a flexible housing member molded around the flexible printed circuit board and the frontside member and the backside member so that at least the surface of the frontside member is exposed to the outside, and a flexible housing member. It is characterized by comprising.

[0006] Further, a vehicular marker lamp device according to the present invention includes:
As described in claim 2, in the configuration of claim 1,
A housing recess for housing the LED element and other electronic components on the flexible printed circuit board was formed on the back side of the front side member.

Further, in the vehicle marker light device according to the present invention, as described in claim 3, in the structure of claim 1, a convex engagement portion is provided on one of the front side member and the rear side member.
A concave engaging portion is provided on the other side, and a penetrating portion through which the convex engaging portion penetrates is formed on the flexible printed circuit board, and the convex engaging portion is engaged with the concave engaging portion through the penetrating portion. By doing so, the relative positioning of the flexible printed board, the front side member, and the rear side member is performed.

[0008] The vehicle marker light device according to the present invention includes:
As described in claim 4, in the configuration of claim 1,
An enlarged portion was provided at the base of a lead wire extending from the flexible printed board, and the enlarged portion was embedded in the housing member.

Further, according to a fifth aspect of the present invention, in the vehicle sign light device according to the first aspect, the sign light device is formed in an elongated shape, and attached to the vehicle body at both ends thereof. When a portion is provided, a bending restricting means is provided for restricting a middle portion of the marker lamp device from being displaced in a direction perpendicular to the longitudinal direction and in a plane direction of the vehicle body mounting surface.

[0010] The vehicle marker light device according to the present invention includes:
As described in claim 6, in the configuration of claim 5,
The bending restricting means is a guide plate having a substantially U-shaped cross section which is applied to the back side of the marker light device and holds both sides of the marker light device.

According to a seventh aspect of the present invention, there is provided a vehicle marker light device according to the fifth aspect, wherein the curving restricting means is formed on the vehicle body mounting surface. A guide recess having a substantially "U" -shaped cross section for holding the sides was formed.

[0012]

According to the structure of the first aspect, the flexible printed circuit board is sandwiched between the front side member and the back side member, and the housing member is molded around the three members. The members are completely integrated, and the flexible printed circuit board does not move inside the vehicle marker light device. Therefore, unevenness in luminous intensity at the time of lighting is less likely to occur, and in addition, even if the marker lamp device is curved, an excessive force hardly acts on the flexible printed circuit board, so that the durability is excellent. In addition, since there is no need to fix each member by bonding or welding, the number of assembling steps is small, and the skill involved in assembling is not required, so that the manufacture of the marker lamp device is facilitated.

According to the second aspect of the present invention, the front side member does not directly contact the LED elements and other electronic components on the flexible printed circuit board, so that an excessive force does not act on each electronic component and the marker lamp device. The concern of the decrease in durability is eliminated.

Further, according to the third aspect of the present invention, the relative positioning of the flexible printed board with respect to the front side member and the back side member is performed by the engagement of the convex engaging portion, the concave engaging portion, and the through portion. Since deviation is prevented, unevenness of luminous intensity and deterioration of durability are prevented, and the alignment of the flexible printed circuit board, the front side member and the back side member is facilitated, and the manufacture of the marker lamp device is further facilitated. Become.

Further, according to the fourth aspect of the present invention, even if the lead wire is pulled from the outside, the expanded portion of the lead wire serves as a stopper to prevent the break of the lead wire, thereby further improving the durability of the marker lamp device. I do.

According to the present invention, since the flexible printed circuit board is prevented from bending in the plane direction, troubles such as disconnection are avoided, and the durability of the marker lamp device is further improved. .

[0017]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a left side view showing an off-road motorcycle to which an example of a marker light device according to the present invention is applied, and FIG. 2 is a rear view.

The motorcycle 1 has a body frame 2
Front fork 4 supporting the front wheel 3
The handlebar 5, the front fender 6, the lighting device 7, and the like are supported so as to be rotatable left and right.
The pivot shaft 8 erected in the vehicle width direction at the center lower part of
A swing arm 11 supporting the rear wheel 9 is pivotally supported so as to be vertically rotatable. The swing arm 11 is buffered by a rear shock absorber 12 provided in the vicinity of the base thereof and a link mechanism (not shown) to absorb shock at the time of vertical swing, and is restored in position.

An engine 13 is mounted on the front half of the body frame 2, and a carburetor 14, an air cleaner 15 and the like are installed behind the engine 13. The power of the engine 13 is transmitted to the rear wheels 9 by a chain 16 arranged on the left side of the vehicle body. Further, the fuel tank 1 is placed on the engine 13.
7 and a seat 18 behind the fuel tank 17.
Is mounted, and a rear fender 19 is provided behind it.

A separate tail fender 21 is provided near the rear end of the rear fender 19, and a marker light device 22 according to the present invention is provided as a tail lamp on the rear surface. FIG. 3 is a left side view of the marker light device 22 obtained by enlarging the part III in FIG. 1, FIG. 4 is a rear view of the marker light device 22 as viewed from an arrow IV in FIG. 3, and FIG. 5 is a line V-V in FIG. 6 and FIG. 7 are longitudinal sectional views of the marker light device 22 taken along lines VI-VI and VII-VII in FIG. 4, respectively.

The marker light device 22 is formed in a horizontally long shape extending in the vehicle width direction, and has a flexible printed circuit board 23.
And the surface (rear surface) of the flexible printed circuit board 23
A front-side member 24 applied to the side, a back-side member 25 applied to the back (front) side of the flexible printed circuit board 23, and a housing member 26 molded around the three members 23, 24, 25. It is provided with.

As shown in FIG. 8, on the surface of the flexible printed circuit board 23, there are mounted, for example, eight LED elements 28 serving as light emission sources of the marker lamp device 22, and a diode is provided between each LED element 28. Electronic components such as 29 and resistor 30 are arranged. Note that the emission color of the LED element 28 is, for example, red.

The front side member 24 is made of, for example, a colorless and transparent polyester elastomer so as to have flexibility and translucency.
5 has the same flexibility as the surface side member 24,
For example, it is formed of a colored polyester elastomer.

As shown in FIG. 6, a concave groove 33 having the same width as the vertical width of the flexible printed circuit board 23 is formed on the rear surface of the back side member 25, and the flexible printed circuit board 23 is fitted in the concave groove 33. You. The vertical width of the front side member 24 is also the same as the vertical width of the flexible printed board 23 and the concave groove 33, and the front side member 24 is fitted into the concave groove 33 together with the flexible printed board 23.

Therefore, the flexible printed circuit board 2
The front-side member 24 and the back-side member 25 are in close contact with the front and back surfaces of No. 3, respectively, so that the flexible printed circuit board 23 is sandwiched between the front-side member 24 and the back-side member 25. The three members 23, 24, and 25 need not be fixed to each other by adhesion, welding, or the like, but may be simply connected by fitting.

As shown in FIG. 8, for example, the front side member 24
A plurality of convex engagement portions 34 extending toward the back surface member 25 are formed on the side, and a plurality of concave engagement portions 35 matching the protrusion engagement portions 34 are provided on the back surface member 25 side. A plurality of penetrating portions 36 through which the convex engaging portions 34 penetrate are formed on the substrate 23.

When the three members 23, 24, 25 are fitted, the convex engaging portion 34 of the front side member 24 penetrates the penetrating portion 36 of the flexible printed circuit board 23 and engages with the concave engaging portion 35 of the rear side member 25. Therefore, the front side member 24 and the back side member 2
5, relative positioning of the flexible printed circuit board 23 is accurately performed. In addition, the penetration part 36 may be a hole shape or a notch shape.

As shown in FIGS. 5 to 8, a plurality of recesses 38, 39,
40 are formed, and these accommodation recesses 38, 39,
LED element 2 on flexible printed circuit board 23
8 and other electronic components 29 and 30 are accommodated. Note that LE
The accommodation recesses 38 corresponding to the D elements 28 are formed in a dome shape and provided with a lens function.
39, 40 may be formed in a continuous groove shape or the like.

On the other hand, like the front side member 24 and the back side member 25, the housing member 26 is made of a flexible material such as polyester elastomer or the like.
4 is molded around the flexible printed circuit board 23, the front side member 24, and the back side member 25 so that the front surface 24 a is exposed to the outside. In this embodiment, the back surface 25a of the back member 25 is also exposed to the outside. At both ends of the housing member 26, mounting portions 42 are provided on the vehicle body side (tail fender 21).
A lead wire extending portion 43 is formed in a portion of the housing member 26 on the upper right side.

The procedure for forming the housing member 26 is as follows. The front side member 24 and the back side member 25 integrally assembled with the flexible printed circuit board 23 interposed therebetween as described above.
And a pair of left and right metal pipes 4 forming the mounting portion 42.
4 is set at a fixed position in a molding die, and the molten material is injected into the die to mold the housing member 26 around the front side member 24 and the back side member 25.

As shown in FIG. 7, at the time of molding the housing member 26, a lead wire 46 extending from the flexible printed circuit board 23 is embedded in the lead wire extension 43 of the housing member 26. At this time, the enlarged portion 47 provided at the base of the lead wire 46 is located in the lead wire extension portion 43. The enlarged portion 47 may be, for example, a metal clip member caulked to the lead wire 46, and it is necessary to prevent the lead portion 46 from moving in the axial direction.

By molding the housing member 26, the front-side member 24 in a state where it is merely fitted is provided.
The back side member 25 and the flexible printed board 23 are completely integrated, and the space between the front side member 24 and the back side member 25 is sealed in a liquid-tight manner, so that the flexible printed board 23 is waterproof. Also, the surface 2 of the front side member 24
4a is exposed to the outside, and the front side member 24 has translucency, so that the light emission of the LED element 28 of the flexible printed circuit board 23 can be visually recognized from the outside.

The integrated flexible printed circuit board 23, the front side member 24, the back side member 25, and the housing member 26 are brought into close contact with the rear surface 21a of the tail fender 21, as shown in FIGS. , Mounting portions 42 on both left and right ends of the housing member 26 (the metal pipe 4
4) A screw 48 inserted from the rear penetrates the rear surface 21a of the tail fender 21 and a nut 49 is inserted from the front.
Are fixed to the rear surface 21 a of the tail fender 21. Since each of the members 23, 24, 25, and 26 has flexibility, the members 23, 24, 25, and 26 can be smoothly bent along the curved shape of the rear surface 21a of the tail fender 21. The length of the metal pipe 44 of the mounting part 42 is
Since the thickness of the housing member 26 and the thickness of the tail fender 21 are equal to each other, there is no concern that the fastening force of the screw 48 and the nut 49 will crush the housing member 26 and the tail fender 21.

Incidentally, the flexible printed circuit board 23
Can be bent in the direction perpendicular to the plate surface,
It is very weak against bending in the direction along the plate surface, and the circuit is easily broken. In particular, in the case of the sign light device 22 formed in an elongated shape as in the case of the sign light device 22, the above-mentioned concern is increased. Therefore,
The intermediate portion of the marker light device 22 is perpendicular to the longitudinal direction,
And body mounting surface (rear surface 21a of tail fender 21)
Is provided with a curvature restricting means for restricting displacement in the surface direction.

As the bending restricting means, for example, FIG.
As shown in FIG. 1, a guide plate 51 having a substantially U-shaped cross section is applied to the back side of the marker light device 22, or FIG.
As shown in FIG. 1, a guide recess 52 having a substantially U-shaped cross section is formed in the rear surface 21a of the tail fender 21 and the marker lamp device 22 is fitted into the guide recess 52, for example.
It is conceivable to hold 22b and restrict the middle part of the marker light device 22 from shifting in the plane direction. By providing such a bending restricting means, it is possible to restrict the bending in the surface direction, which is a weak point of the flexible printed board 23, and to prevent the flexible printed board 23 from being damaged.

The flexible printed circuit board 23 is accurately positioned inside the marker lamp device 22 configured as described above, and the flexible printed circuit board 23 moves relative to the front side member 24 and the back side member 25. Therefore, the luminous intensity of the LED element 28 during lighting is less likely to be uneven. In addition, even if the marker lamp device 22 is curved, an excessive force is unlikely to act on the flexible printed circuit board 23, so that the durability is excellent. In particular, the LED element 28 and other electronic components 29, 30 Are formed, the front side member 24 does not directly contact each of the electronic components 28, 29, 30.
Failures such as disconnection of 3 can be prevented beforehand.

Further, in the marker lamp device 22, the convex engaging portion 34 formed on the front side member 24 is passed through the penetrating portion 36 of the flexible printed circuit board 23 to engage with the concave engaging portion 35 of the rear side member 25. The three members 23, 24, 25 can be accurately positioned relative to each other only by
Since there is no need to fix the members 4 and 25 and the housing member 26 by bonding, welding, or the like, the number of man-hours for assembling is extremely small, and the skill involved in assembling is not required at all.

Further, an enlarged portion 47 provided at the base of the lead wire 46 extending from the flexible printed circuit board 23.
Is embedded in the lead wire extending portion 43 of the housing member 26. Therefore, even if the lead wire 46 is pulled from the outside, the enlarged portion 47 serves as a stopper, preventing the lead wire 46 from being disconnected, and is even higher. Durability can be obtained.

In the above embodiment, the front side member 24
The back member 25 and the housing member 26 are formed of polyester elastomer, but may be formed of another resin material as long as the material has flexibility. In the above-described embodiment, the marker light device 22 includes two screws 48.
And the nut 49 are attached to the tail fender 21.
May be replaced with a clip made of resin or the like, or the marker lamp device 22 may be attached with a double-sided tape or the like.

Further, the marker light device for a vehicle according to the present invention can be widely applied not only to motorcycles but also to automobiles and other vehicles.

[0041]

As described above, the vehicle marker light device according to the present invention has a flexible printed circuit board having an LED element mounted on the surface thereof, and a flexible printed circuit board applied to the front surface side of the flexible printed circuit board. A front-side member having a light-transmitting property, a back-side member which is applied to the back side of the flexible printed board and has flexibility and sandwiches the flexible printed board together with the front-side member, and at least a surface of the front-side member Is molded around the flexible printed circuit board and the front-side member and the back-side member so as to be exposed to the outside, and is configured to include a flexible housing member,
According to this configuration, it is possible to prevent the flexible printed circuit board from moving inside the marker light device or to apply an unreasonable force to the flexible printed circuit board when the marker lamp device is bent, thereby generating uneven luminous intensity at the time of lighting and preventing endurance. In addition to preventing deterioration of performance, it is possible to reduce the number of assembling steps and skill, thereby facilitating the production.

[Brief description of the drawings]

FIG. 1 is a left side view showing an off-road motorcycle to which an example of a vehicle marker light device according to the present invention is applied.

FIG. 2 is a rear view of the motorcycle shown in FIG.

FIG. 3 is a left side view of the sign light device in which a portion III in FIG. 1 is enlarged.

FIG. 4 is a rear view of the marker light device as viewed from an arrow IV in FIG. 3;

FIG. 5 is a diagram showing an embodiment of the present invention by a cross section of the marker light device along the line VV in FIG. 4;

FIG. 6 is a vertical sectional view of the marker light device taken along the line VI-VI in FIG. 4;

FIG. 7 is a longitudinal sectional view of the marker light device taken along the line VII-VII in FIG.

FIG. 8 is an exploded view of the flexible printed circuit board, the front side member, and the back side member.

FIG. 9 is a plan view showing a state where the marker light device is attached to the rear surface of the tail fender.

FIG. 10 is a longitudinal sectional view showing an example of a bending restricting means.

FIG. 11 is a longitudinal sectional view showing an example of a bending restricting means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motorcycle 21 Tail fender 21a Body mounting surface 22 Sign light device 22a, 22b Both sides of sign light device 23 Flexible printed circuit board 24 Front member 24a Front member 24b Front member 25 Back member 26 Housing member 28 LED element 29 Diode as another electronic component 30 Resistance as another electronic component 34 Convex engagement portion 35 Recess engagement portion 36 Penetration portion 38, 39, 40 Housing recess 42 Mounting portion 46 Lead wire 47 Enlarged portion 51 Curved Guide plate 52 as restriction means Guide concave part as curvature restriction means

Claims (7)

[Claims] 1. A flexible printed circuit board 23 having an LED element 28 mounted on a surface thereof, a flexible and light-transmitting surface member 24 applied to the surface side of the flexible printed circuit board 23, and the flexible printed circuit board. A back surface member 25 which is applied to the back surface of the substrate 23 and has flexibility and sandwiches the flexible printed circuit board 23 together with the front surface member 24, and at least a surface 24a of the front surface member 24 is exposed to the outside. A sign light device for a vehicle, comprising: a flexible housing member (26) molded around the flexible printed circuit board (23), the front member (24), and the back member (25). 2. An accommodation recess 38 for accommodating the LED element 28 and other electronic components 29, 30 on the flexible printed circuit board 23 on the back surface 24b side of the front side member 24.
The vehicular marker lamp device according to claim 1, wherein 39 and 40 are formed. 3. A convex engaging portion 34 is provided on one of the front side member 24 and the rear side member 25, and a concave engaging portion 35 is provided on the other, and the convex engaging portion 34 is provided on the flexible printed circuit board 23. The flexible printed circuit board 23, the front side member 24, and the back side member 25 are formed by forming a penetrating portion 36 that penetrates and engaging the convex engaging portion 34 with the concave engaging portion 35 through the penetrating portion 36. The vehicle marker light device according to claim 1, wherein relative positioning of the vehicle is performed. 4. The vehicle marker light device according to claim 1, wherein an enlarged portion 47 is provided at a base of a lead wire 46 extending from the flexible printed circuit board 23, and the enlarged portion 47 is embedded in the housing member 26. 5. When the marker light device is formed in an elongated shape, and mounting portions 42 are provided at both ends of the marker light device, an intermediate portion of the marker light device is perpendicular to the longitudinal direction.
The vehicle sign light device according to claim 1, further comprising a curve restricting means for restricting displacement in a plane direction of the vehicle body mounting surface 21a. 6. The guide plate 51 according to claim 5, wherein the bending restricting means is applied to the back side of the marker light device and holds a substantially U-shaped cross section for holding both sides 22a, 22b of the marker light device. Vehicle sign light device. 7. The vehicle body mounting surface 21 according to claim 7, wherein
6. The vehicular marker lamp device according to claim 5, wherein the guide lamp member 52 is formed in a guide recess 52 having a substantially "U" -shaped cross section for holding both sides 22a, 22b of the marker lamp device.