JP3896743B2 - Vehicle marker lamp device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicular marker lamp apparatus using an LED element.
[0002]
[Prior art]
2. Description of the Related Art Some marker lamp devices installed in vehicles such as automobiles and motorcycles use LED elements as their light emission sources. As an example, there is a marker lamp device described in Utility Model Registration Publication No. 25476656. In this marker lamp apparatus, a flexible printed circuit board having LED elements mounted on its surface is fitted into a recess formed in a lamp body made of a flexible material such as rubber, and a transparent and flexible lens is further fitted into the recess. It is. The flexible printed circuit board is held in a space defined between the lamp body (concave portion) and the lens.
[0003]
[Problems to be solved by the invention]
However, since the flexible printed circuit board is not fixed to the lamp body in the above structure, the flexible printed circuit board moves within the lamp body, causing unevenness in the luminous intensity of the LED element at the time of lighting, or making the flexible printed circuit board unreasonable. There is a possibility that a problem may be caused in durability due to a large force. In addition, since the lens is fixed to the lamp body by bonding or welding, it requires man-hours to assemble it and is skilled in fixing the lens in a liquid-tight manner to protect the flexible printed circuit board from rainwater. Is difficult to manufacture.
[0004]
The present invention has been made to solve the above-described problems, and provides a vehicular marker lamp device that can prevent unevenness in light intensity during lighting, has excellent durability, and is easy to manufacture. For the purpose.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a vehicle marker lamp device according to the present invention is applied to a flexible printed circuit board having LED elements mounted on the surface thereof and the surface side of the flexible printed circuit board as described in claim 1. A flexible and translucent front side member, a back side member that 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, at least the above The flexible printed board, the front surface side member, and the back surface side member are molded so as to expose the surface of the front surface side member to the outside, and are provided with a flexible housing member.
[0006]
According to a second aspect of the present invention, there is provided a vehicular marker lamp device according to the second aspect, wherein the LED element on the flexible printed circuit board and the other electronic component are arranged on the back side of the front side member. A housing recess for housing the was formed.
[0007]
Further, according to a third aspect of the present invention, the vehicle marker lamp apparatus according to the first aspect has a convex engagement portion on one of the front side member and the rear side member and a concave portion on the other. While providing a joint part, forming a penetration part through which the convex engagement part penetrates the flexible printed circuit board, and passing the convex engagement part through the penetration part to engage with the concave engagement part, Relative positioning of the flexible printed circuit board, the front surface side member, and the back surface side member was performed.
[0008]
In addition, the vehicular marker lamp apparatus according to the present invention, as described in claim 4, is provided with an enormous portion in the base portion of the lead wire extending from the flexible printed circuit board in the configuration of claim 1. Embedded in the housing member.
[0009]
Further, in the vehicle marker lamp device according to the present invention, as described in claim 5, in the configuration of claim 1, the marker lamp device is formed in an elongated shape, and attachment portions to the vehicle body are provided at both ends thereof. In such a case, a bending restricting means is provided for restricting the intermediate portion of the marker lamp device from being displaced in a direction perpendicular to the longitudinal direction and in the surface direction of the vehicle body mounting surface.
[0010]
According to a sixth aspect of the present invention, there is provided a vehicular marker lamp device according to the sixth aspect of the present invention, wherein the bending restricting means is applied to the back side of the marker lamp device and the both sides of the marker lamp device are arranged. A guide plate having a substantially “U” -shaped cross section for holding the side was used.
[0011]
According to the vehicle marker lamp device of the present invention, as described in claim 7, in the configuration of claim 5, the bending regulating means is formed on the vehicle body mounting surface to hold both sides of the marker lamp device. A guide recess having a substantially “U” cross section is formed.
[0012]
[Action]
According to the configuration of the first aspect, the flexible printed circuit board is sandwiched between the front surface side member and the back surface side member, and the housing member is molded around these three members. So that the flexible printed circuit board does not move inside the vehicular marker lamp device. Therefore, unevenness in light intensity at the time of lighting is less likely to occur, and even if the marker lamp device is curved, an excessive force is unlikely to act on the flexible printed circuit board, resulting in excellent durability. In addition, since it is not necessary to fix the members together by bonding or welding, the number of assembling steps is small, and the skill required for assembling is not required, so that the marker lamp device can be easily manufactured.
[0013]
Moreover, according to the structure of Claim 2, since a surface side member does not contact a LED element and other electronic components on a flexible printed circuit board directly, excessive force does not act on each electronic component, and durability of a marker lamp apparatus The fear of decline is dispelled.
[0014]
Furthermore, according to the structure of Claim 3, relative positioning of the flexible printed circuit board with respect to the surface side member and the back surface side member is made by the engagement of the convex engaging portion, the concave engaging portion, and the penetrating portion, thereby preventing displacement. Therefore, the occurrence of uneven brightness and deterioration of durability are prevented, and the alignment of the flexible printed circuit board, the front surface side member, and the back surface side member is facilitated, and the manufacture of the marker lamp device is further facilitated.
[0015]
Further, according to the configuration of claim 4, even if the lead wire is pulled from the outside, the enormous portion of the lead wire serves as a stopper to prevent the lead wire from being disconnected, thereby further improving the durability of the marker lamp device.
[0016]
And if comprised like Claims 5-7, since the curvature to the surface direction of a flexible printed circuit board is prevented, failures, such as a disconnection, are avoided and durability of a marker lamp apparatus further improves.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a left side view showing an off-road motorcycle to which an example of a marker lamp device according to the present invention is applied, and FIG. 2 is a rear view.
[0018]
In the motorcycle 1, a front fork 4 that supports a front wheel 3 is supported on a front head of a body frame 2 together with a handle bar 5, a front fender 6, a lighting device 7, and the like so as to be rotatable left and right. A swing arm 11 that supports the rear wheel 9 is pivotally supported on a pivot shaft 8 that is installed in the center lower portion of the vehicle body frame 2 in the vehicle width direction so as to be rotatable up and down. The swing arm 11 is buffered by a rear shock absorber 12 provided in the vicinity of its base and a link mechanism (not shown) to absorb a shock during vertical swinging and to be restored in position.
[0019]
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 wheel 9 by a chain 16 disposed on the left side of the vehicle body. Further, a fuel tank 17 is installed on the engine 13, a seating seat 18 is placed behind the fuel tank 17, and a rear fender 19 is connected to the rear thereof.
[0020]
A separate tail fender 21 is provided near the rear end of the rear fender 19, and a marker lamp device 22 according to the present invention is provided as a tail lamp on the rear surface thereof. 3 is a left side view of the marker lamp device 22 in which the portion III in FIG. 1 is enlarged, FIG. 4 is a rear view of the marker lamp device 22 as viewed in the direction of arrow IV in FIG. 3, and FIG. 6 and FIG. 7 are longitudinal sectional views of the marker lamp device 22 taken along lines VI-VI and VII-VII in FIG. 4, respectively.
[0021]
The marker lamp device 22 is formed in a horizontally long shape extending in the vehicle width direction, and includes a flexible printed circuit board 23, a surface side member 24 applied to the surface (rear surface) side of the flexible printed circuit board 23, and the flexible printed circuit board 23. A back surface side member 25 applied to the back surface (front surface) side and a housing member 26 molded around the three members 23, 24, 25 are configured.
[0022]
As shown also in FIG. 8, on the surface of the flexible printed circuit board 23, for example, eight LED elements 28 serving as light emission sources of the marker lamp device 22 are mounted, and a diode 29 and a resistor are interposed between the LED elements 28. Electronic components such as 30 are arranged. Note that the light emission color of the LED element 28 is, for example, red.
[0023]
Further, the front side member 24 is formed of, for example, a colorless and transparent polyester elastomer so as to have flexibility and translucency, and the back side member 25 has the same flexibility as the front side member 24. Thus, for example, it is formed of a colored polyester elastomer.
[0024]
As shown in FIG. 6, a recessed 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 surface side member 25, and the flexible printed circuit board 23 is fitted into the recessed groove 33. Further, the vertical width of the surface side member 24 is the same as the vertical width of the flexible printed circuit board 23 and the recessed groove 33, and the surface side member 24 is fitted in the recessed groove 33 together with the flexible printed circuit board 23.
[0025]
Therefore, the front surface side member 24 and the back surface side member 25 are in close contact with the front and back surfaces of the flexible printed circuit board 23, respectively, and the flexible printed circuit board 23 is sandwiched between the front surface side member 24 and the back surface side member 25. . The three members 23, 24, and 25 do not need to be fixed to each other by bonding, welding, or the like, and may be simply connected by fitting.
[0026]
As shown in FIG. 8, for example, a plurality of convex engaging portions 34 extending to the back surface side member 25 side are formed on the front surface side member 24 side, and a plurality of convex engaging portions 34 aligned on the back surface side member 25 side are formed. Are formed, and the flexible printed circuit board 23 is formed with a plurality of through portions 36 through which the convex engaging portions 34 penetrate.
[0027]
When the three members 23, 24, 25 are fitted, the convex engaging portion 34 of the front surface side member 24 penetrates the through portion 36 of the flexible printed circuit board 23 and is engaged with the concave engaging portion 35 of the back surface side member 25. The relative positioning of the flexible printed circuit board 23 with respect to the front side member 24 and the back side member 25 is accurately performed. The through portion 36 may be a hole or a notch.
[0028]
As shown in FIGS. 5 to 8, a plurality of receiving recesses 38, 39, 40 are formed on the back surface 24 b side of the front surface side member 24, and a flexible printed circuit board is formed in these receiving recesses 38, 39, 40. The LED element 28 and the other electronic components 29 and 30 on 23 are accommodated. The housing recess 38 corresponding to the LED element 28 is formed in a dome shape and provided with a lens action, but each housing recess 38, 39, 40 may be formed in a continuous groove shape.
[0029]
On the other hand, the housing member 26 is formed flexibly by a polyester elastomer or the like, similar to the front surface side member 24 and the back surface side member 25, and the flexible printed circuit board 23 and the housing member 26 are arranged so that at least the surface 24a of the front surface side member 24 is exposed to the outside. Molding is performed around the front surface side member 24 and the back surface side member 25. In this embodiment, the back surface 25a of the back surface side member 25 is also exposed to the outside. Further, attachment portions 42 to the vehicle body side (tail fender 21) are provided at both ends of the housing member 26, and lead wire extending portions 43 are formed on the right side of the upper side of the housing member 26.
[0030]
As described above, the housing member 26 is formed by a front-side member 24 and a rear-side member 25 that are integrally assembled with the flexible printed board 23 interposed therebetween, and a pair of left and right metal pipes 44 that constitute the mounting portion 42. Are placed at fixed positions in the molding die, and the molten material is injected into the die to mold the housing member 26 around the front surface side member 24 and the back surface member 25.
[0031]
As shown in FIG. 7, when the housing member 26 is molded, the lead wire 46 extending from the flexible printed board 23 is embedded in the lead wire extending portion 43 of the housing member 26. At this time, the enormous portion 47 provided at the base portion of the lead wire 46 is positioned in the lead wire extending portion 43. The enormous portion 47 may be, for example, a metal clip member that is crimped to the lead wire 46, etc., and needs to be prevented from moving in the axial direction of the lead wire 46.
[0032]
By molding the housing member 26, the front-side member 24, the back-side member 25, and the flexible printed board 23 that are simply fitted together are completely integrated, and the front-side member 24 and the back-side member 25 is sealed in a liquid-tight manner, and the flexible printed circuit board 23 is waterproofed. Moreover, since the surface 24a of the surface side member 24 is exposed to the outside and the surface side member 24 has translucency, the light emission of the LED element 28 of the flexible printed circuit board 23 can be visually recognized from the outside.
[0033]
As shown in FIGS. 3 and 9, the flexible printed board 23, the front surface side member 24, the back surface side member 25, and the housing member 26 that are integrated in this way are brought into close contact with the rear surface 21 a of the tail fender 21, and the housing member The screws 48 inserted from the rear into the attachment portions 42 (metal pipes 44) at both the left and right ends of 26 penetrate the rear surface 21a of the tail fender 21, and the nut 49 is fastened from the front, whereby the rear surface 21a of the tail fender 21 is secured. Fixed. Since each member 23, 24, 25, 26 has flexibility, it can be reasonably curved along the curved shape of the rear surface 21 a of the tail fender 21. Since the length of the metal pipe 44 of the mounting portion 42 is equal to the sum of the thickness of the housing member 26 and the thickness of the tail fender 21, the fastening force by the screw 48 and the nut 49 is applied to the housing member 26 and the tail fender 21. There is no concern about crushing.
[0034]
By the way, the flexible printed circuit board 23 can cope with bending in a direction orthogonal to the plate surface, but is very weak with respect to bending in a direction along the plate surface, and the circuit is easily disconnected. In particular, the above-mentioned concern is increased in the case where the sign lamp device 22 is formed in an elongated shape. In view of this, there is provided a bending restricting means for restricting the intermediate portion of the marker lamp device 22 from shifting in the direction perpendicular to the longitudinal direction and in the surface direction of the vehicle body mounting surface (the rear surface 21a of the tail fender 21).
[0035]
For example, as shown in FIG. 10, a guide plate 51 having a substantially “U” cross section is applied to the back side of the marker lamp device 22 as shown in FIG. 10, or the rear surface of the tail fender 21 as shown in FIG. A guide recess 52 having a substantially “U” -shaped cross section is formed in 21 a to hold the both sides 22 a and 22 b of the marker lamp device 22 by, for example, fitting the marker lamp device 22. It may be possible to regulate the shift to By providing such a bending restricting means, it is possible to prevent the flexible printed circuit board 23 from being damaged by restricting the bending in the surface direction, which is a weak point of the flexible printed circuit board 23.
[0036]
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 does not move relative to the front surface side member 24 and the back surface side member 25. For this reason, unevenness in the luminous intensity of the LED elements 28 during lighting hardly occurs. Moreover, even if the marker lamp device 22 is curved, it is difficult to apply an excessive force to 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 provided on the back surface side of the surface side member 24. Since the housing recesses 38, 39, 40 are formed, the surface side member 24 is not in direct contact with each electronic component 28, 29, 30, thereby preventing a failure such as disconnection of the flexible printed circuit board 23. It can be prevented in advance.
[0037]
In addition, the marker lamp device 22 simply engages the convex engagement portion 34 formed on the front surface side member 24 with the concave engagement portion 35 of the back surface side member 25 through the penetration portion 36 of the flexible printed circuit board 23. Since the three members 23, 24, 25 can be accurately positioned relative to each other, and it is not necessary to fix these members 23, 24, 25 and the housing member 26 by adhesion, welding, etc., the entire assembly man-hour is very large. The manufacturing is extremely easy because there is little skill required for assembly.
[0038]
Furthermore, since the enormous portion 47 provided at the base portion of the lead wire 46 extending from the flexible printed board 23 is embedded in the lead wire extension portion 43 of the housing member 26, the lead wire 46 is pulled from the outside. However, the enormous portion 47 serves as a stopper to prevent disconnection of the lead wire 46, and higher durability can be obtained.
[0039]
In the above embodiment, the front side member 24, the back side member 25, and the housing member 26 are formed of polyester elastomer, but may be formed of other resin materials as long as they have flexibility. In the above embodiment, the marker lamp device 22 is structured to be attached to the tail fender 21 by the two screws 48 and the nut 49. However, the screw 48 and the nut 49 are replaced with a resin clip or the like, or a double-sided tape. The indicator lamp device 22 may be attached by, for example.
[0040]
Furthermore, the vehicular marker lamp apparatus according to the present invention is not limited to motorcycles but can be widely applied to automobiles and other vehicles.
[0041]
【The invention's effect】
As described above, the vehicle marker lamp device according to the present invention has a flexible printed circuit board having an LED element mounted on the surface thereof, and is flexible and translucent by being applied to the surface side of the flexible printed circuit board. The front side member, the back side member that 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 the surface of the front side member is exposed to the outside. As described above, the flexible printed circuit board, the front surface side member, and the back surface side member are molded so as to include a flexible housing member. If the flexible printed circuit board moves or the beacon lamp is bent, excessive force is applied to the flexible printed circuit board. To prevent that, which prevents the generation and durability deterioration of the light intensity unevenness at the time of lighting, it is possible to facilitate the manufacture by reducing the number of assembly steps and skill.
[Brief description of the drawings]
FIG. 1 is a left side view showing a motorcycle for off-road driving to which an example of a vehicular marker lamp 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 marker lamp device in which a portion III in FIG. 1 is enlarged.
4 is a rear view of the marker lamp device as viewed in the direction of arrow IV in FIG. 3;
FIG. 5 is a view showing an embodiment of the present invention by a cross section of the marker lamp apparatus along the line VV in FIG. 4;
6 is a longitudinal sectional view of the marker lamp device taken along line VI-VI in FIG.
7 is a longitudinal sectional view of the marker lamp device taken along line VII-VII in FIG.
FIG. 8 is an exploded view of the flexible printed board, the front surface side member, and the back surface side member.
FIG. 9 is a plan view showing a state in which a marker lamp 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 unit.
FIG. 11 is a longitudinal sectional view showing an example of a bending restricting unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Motorcycle 21 Tail fender 21a Car body mounting surface 22 Marking lamp apparatus 22a, 22b Both sides 23 of a marking lamp apparatus Flexible printed circuit board 24 Surface side member 24a Surface side member surface 24b Surface side member back surface 25 Back surface side member 26 Housing member 28 LED element 29 Diode 30 as another electronic component Resistor 34 as another electronic component Convex engaging part 35 Concave engaging part 36 Passing part 38, 39, 40 Accommodating concave part 42 Mounting part 46 Lead wire 47 Enormous part 51 Curved Guide plate 52 as restricting means Guide recess as bend restricting means

Claims (7)

A flexible printed circuit board 23 having an LED element 28 mounted on the surface; a surface-side member 24 which is applied to the surface side of the flexible printed circuit board 23 and has flexibility and translucency; and a back surface side of the flexible printed circuit board 23 The flexible printed circuit board 23 is exposed to the outside so that at least the front surface 24a of the front surface side member 24 is exposed to the outside, and the back surface side member 25 sandwiching the flexible printed circuit board 23 together with the front surface side member 24. The vehicle sign lamp device is characterized by comprising a housing member 26 which is molded around the front side member 24 and the back side member 25 and has flexibility. 2. The vehicle sign according to claim 1, wherein housing recesses 38, 39, 40 for housing the LED elements 28 on the flexible printed circuit board 23 and other electronic components 29, 30 are formed on the back surface 24 b side of the front surface side member 24. Lamp device. A convex engaging portion 34 is provided on one of the front surface side member 24 and the back surface side member 25, and a concave engaging portion 35 is provided on the other, and a through portion 36 through which the convex engaging portion 34 penetrates the flexible printed circuit board 23. And the relative positioning of the flexible printed circuit board 23, the front surface side member 24 and the back surface side member 25 is performed by passing the convex engaging portion 34 through the through portion 36 and engaging with the concave engaging portion 35. The vehicular marker lamp device according to claim 1. The vehicular marker lamp device according to claim 1, wherein a huge portion 47 is provided at a base portion of a lead wire 46 extending from the flexible printed circuit board 23, and the huge portion 47 is embedded in the housing member 26. When the marker lamp device is formed in an elongated shape and the attachment portions 42 to the vehicle body are provided at both ends thereof, the intermediate portion of the marker lamp device is perpendicular to the longitudinal direction and in the surface direction of the vehicle body attachment surface 21a. The vehicular marker lamp device according to claim 1, further comprising a bending regulating means for regulating deviation. 6. The vehicle marker lamp according to claim 5, wherein the bending restricting means is a guide plate 51 having a substantially "U" cross section that is applied to the back side of the marker lamp device and holds both sides 22a and 22b of the marker lamp device. apparatus. 6. The vehicle marker lamp device according to claim 5, wherein the bending restricting means is a guide recess 52 having a substantially "U" cross section that is formed on the vehicle body mounting surface 21a and holds both sides 22a and 22b of the marker lamp device.

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