JP2009123568A - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device for vehicle, in which the number of components is reduced and installation work is simplified, as well as downsizing is achieved. <P>SOLUTION: The lighting equipment 1 is provided with a bolt head portion 10 which is formed of a transparent synthetic resin and has a space inside, a substrate unit 50 which is housed in the space of the bolt head portion 10 and is mounted with an LED 40, a washer 30 which is fixed to the lower end part of the bolt head portion 10 and has an opening 32, a spring 20 which is fixed to the lower side of the washer 30, a through-hole 22 which is formed along the axial line of the spring 20 and of which one end is communicated with the opening 32 and the other end is made open, and a power supply wire 70 of which one end is connected to the substrate unit 50 and the other end is led outside through the opening 32 and the through-hole 22 and supplies power to the LED 40. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technology of a lighting device used by being mounted on an automobile.

Conventionally, light-emitting diodes (hereinafter referred to as “LEDs”) have been used as lighting devices used inside and outside automobiles.
For example, Patent Document 1 discloses an illumination unit in which a wiring board on which an LED is mounted is incorporated in a box-shaped base body and a translucent cover that covers the wiring board is attached. This lighting unit is fixed to a vehicle and used by a plurality of bolts and nuts.

Japanese Patent Laid-Open No. 2001-151013, FIG. 1, FIG.

However, since the conventional lighting device disclosed in Patent Document 1 uses a plurality of bolts, fixing brackets, and the like to be attached to the vehicle body, the number of parts increases and the installation work on the vehicle body also takes time. It was troublesome.
Moreover, since the board | substrate which mounted LED was integrated in the box-shaped base body, the illuminating device of patent document 1 required the space for installing in a vehicle body, and size reduction was desired.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and aims to reduce the number of parts in a vehicle lighting device, simplify the installation work, and realize downsizing of the lighting device. It is.

  A lighting device according to the present invention for solving the above-described problems includes a bolt head formed of a transparent synthetic resin and having a space portion therein, and a screw portion formed at a lower end portion of the bolt head. A board unit on which an LED is mounted is accommodated in the space of the bolt head.

As described above, according to the present invention, the bolt head is formed of a transparent synthetic resin, and the board unit on which the LED is mounted is incorporated in the bolt head.
With this configuration, when power is supplied to the LED to emit light, the light from the LED passes through the bolt head, and light is emitted from the bolt head. That is, according to the present invention, the bolts generally used as fixing parts are configured to have the function of the lighting equipment, thereby reducing the number of parts of the lighting equipment for vehicles.

In addition, when attaching the lighting device of the present invention to the vehicle body, a screw hole to be screwed with the screw portion of the lighting device is provided in the vehicle body without the need for a dedicated mounting bracket or a plurality of bolts, and the screw portion is screwed into the screw hole. By doing so, the lighting device is attached to the vehicle body.
In other words, according to the present invention, since it is attached by screwing the screw portion of the lighting device into the screw hole of the vehicle body, it is not necessary to screw a plurality of places as in the conventional lighting unit for vehicles. Work time is reduced.
Furthermore, unlike the conventional lighting unit, the lighting device of the present invention does not require a box-like base body for housing the LEDs, and only needs to secure a space for fixing the bolts.
Therefore, space saving can be realized. Moreover, since there is no need for a plurality of attachment members, fixing brackets, etc., it is possible to reduce the weight and cost of the lighting equipment.

A lighting device according to the present invention for solving the above-mentioned problems is mounted with a bolt head formed of a transparent synthetic resin and having a space inside, and an LED housed in the space of the bolt head. Formed along the axis of the threaded portion, a disk-shaped washer having an opening, fixed to the lower end portion of the bolt head, a screw portion fixed to the lower surface of the washer, and The one end portion is in communication with the opening, the other end portion is open, the one end is connected to the substrate unit, and the other end is led out to the outside through the opening and the through hole, And a power supply line for supplying power to the LED.
As described above, in the present invention, the power supply line for supplying power to the LED has one end connected to the board unit and the other end led out to the outside through the opening of the washer and the through hole of the screw portion. With this configuration, in the lighting device of the present invention, it is possible to supply power to the LED housed in the bolt head by simply connecting the power line led out from the through hole of the screw part to the power source on the vehicle body side. .

Further, it is desirable that a lens cut for diffusing light from the LED is formed on the upper surface of the bolt head.
By comprising in this way, a bolt head can be functioned as a diffusion lens. Thereby, LED with a narrow irradiation angle (strong directivity) can be utilized as a light source which irradiates a wide range.

In addition, the screw part and the washer are formed of metal, and one end is connected to the substrate unit, and the other end is connected to the washer. One terminal of the LED is the ground wire, It is desirable to be grounded through a washer and a screw part.
With the above configuration, when the lighting device according to the present invention is attached to the vehicle body (when the screw portion of the lighting device is screwed into the screw hole formed in the vehicle body), the lighting device has the screw portion fixed to the washer. Thus, one terminal of the LED can be grounded to the vehicle body.
That is, according to the present invention, the electrical connection work is completed by screwing the screw portion of the lighting device to the vehicle body and connecting the power supply line to the positive power supply, thereby reducing the burden of the connection work. Can do.

  As described above, according to the present invention, in a lighting device for a vehicle, the number of components can be reduced to simplify the mounting work, and the lighting device can be downsized.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the lighting device of the present embodiment will be described with reference to FIGS. 1 to 3.
FIG. 1: has shown the figure which looked at the lighting equipment of embodiment of this invention from the side. Moreover, FIG. 2 has shown the figure which looked at the illuminating device of embodiment of this invention from the upper surface. Moreover, FIG. 3 has shown the schematic perspective view of the illuminating device of embodiment of this invention.

  As shown in the drawing, a lighting device 1 includes a board unit 50 on which a bolt head 10 formed of a transparent synthetic resin, a screw portion 20 formed of metal, a washer 30 formed of metal, and an LED 40 are mounted. A ground line 60 for supplying a negative power source, a power line 70 for supplying a positive power source, a shield member 80, and an O-ring 90.

The bolt head 10 has an upper surface portion 11 formed at an upper end portion (upper end portion shown in FIG. 1), a lower surface portion 12 formed at a lower end portion (lower end portion shown in FIG. 1), and a space portion formed therein. Has been. A concave portion 11a that engages with a hexagon wrench is formed at the center of the upper surface portion 11 (see FIGS. 2 and 3). A hole 13 is opened at the center of the bottom surface portion 12. Further, a substrate support portion 12 a extending in the axial direction (Y direction shown in FIG. 1) is formed at the inner peripheral end of the bottom surface portion 12 of the bolt head portion 10.
In addition, in FIG. 1 thru | or FIG. 3, although the volt | bolt head 10 has shown the hex | bolt bolt formed in hexagon shape, this is an illustration to the last.

  In addition, a board unit 50 on which the LED 40 is mounted is attached to the board support portion 12 a formed at the inner peripheral end of the bottom surface portion 12 of the bolt head portion 10. When the substrate unit 50 is attached to the substrate support portion 12a, the irradiation direction of the LED 40 is directed to the upper surface portion 11 of the bolt head 10.

The washer 30 is formed in a disc shape having an opening 32. A plurality of pawls 31 formed substantially in parallel with the axial direction (Y direction shown in FIG. 1) are provided on the upper surface (upper surface shown in FIG. 1) of the washer 30.
The bolt head 10 and the washer 30 are fixed by fixing the claw 31 to the inner peripheral side end of the bottom surface 12 of the bolt head 10 by a method such as laser welding.
In the present embodiment, the claw portion 31 of the washer 30 and the bottom surface portion 12 of the bolt head portion 10 are fixed by laser welding, but the present invention is particularly limited to this. It is not a thing. For example, the claw portion 31 of the washer 30 may be fixed by being locked to the bottom surface portion 12 of the bolt head portion 10.

The screw portion 20 is formed in a hollow cylindrical shape having a through hole 22 open at both ends, and an upper end portion thereof is fixed to the lower surface of the washer 30 coaxially with the washer 30.
That is, the screw portion 20 and the washer 30 are fixed in a state where the through hole 22 of the screw portion 20 and the opening 32 of the washer 30 communicate with each other. The screw portion 20 and the washer 30 are fixed by welding, bonding, or the like.

  Further, when the washer 30 and the bolt head 10 are fixed, an O-ring 90 is sandwiched between the washer 30 and the bottom surface portion 12 formed at the lower end of the bolt head 10. Thereby, it is possible to prevent water and dust from entering the bolt head 10 and reduce the possibility that the lighting device 1 breaks down.

Further, a shield member 80 made of rubber or the like is attached to one side (the lower side shown in FIG. 1) of the washer 30 (attached with an adhesive or the like).
The shield member 80 can prevent water and dust from adhering to the substrate unit 50 on which the LED 40 is mounted, and can reduce the possibility that the lighting device 1 will fail.
Although not shown, a shield part for waterproofing and dustproofing may be provided at the other end part (lower end part shown in FIG. 1) of the screw part 20.

The power supply to the board unit 50 is performed by the ground line 60 and the power line 70.
Specifically, the power supply line 70 for supplying positive power is connected to the substrate 50 at one end, and the other end from the inside of the bolt head 10 to the opening 32 of the washer 30 and the through hole 22 of the screw portion 20. Is derived to the outside. A connector 75 for receiving the supply of positive power is provided at the other end of the power line 70.
The ground wire 60 for supplying a negative power source has one end connected to the substrate unit 50 and the other end connected to the washer 30 (or the cylindrical inner surface of the screw portion 20) by soldering or the like.

With the above configuration, the positive power is supplied to the LED 40 on the board unit 50 by connecting the connector 75 provided at the other end of the power line 70 to the power source in the vehicle.
Further, with the above configuration, the screw portion 20 of the lighting device 1 is screwed into the screw hole formed in the vehicle body (the screw hole screwed with the screw portion 20), so that the LED 40 on the board unit 50 has a negative power source. Is supplied (can be grounded to the vehicle body via the screw portion 20 in contact with the washer 30).

Furthermore, in this embodiment, a lens cut that diffuses light from the LED 40 is formed on the upper surface portion 11 of the bolt head portion 10.
By comprising in this way, the upper surface part 11 of the bolt head 10 can be functioned as a diffuser lens. With this lens cut, the LED 4 having a narrow irradiation angle (strong directivity) can be used as a light source for irradiating a wide range.
In FIG. 1, the concave portion 11a of the upper surface portion 11 of the bolt head portion 10 is lens cut on the outer side, and the outer peripheral portion 11b of the upper surface portion 11 is lens cut on the inner side. Is not particularly limited to this.

Then, the application example of the illuminating device 1 of this embodiment is shown in FIG.
As illustrated, the lighting device 1 of the present embodiment can be attached to the license garnish 100 of the vehicle body V and used as illumination for the license plate 110. Moreover, as shown in the drawing, the lighting device 1 according to the present embodiment can be used as foot illumination built in the door mirror 200 by being attached to the door mirror 200 of the vehicle body V.

And in the illuminating device 1 of this embodiment, the lens cut which diffuses the light from LED40 is given to the upper surface part 11 of the volt | bolt head 10 as mentioned above.
Therefore, although the LED 4 having a narrow irradiation angle (strong directivity) is used as a light source, the license pilate 110 can be illuminated as a whole.
Further, by attaching to the door mirror 200, the foot can be illuminated over a relatively wide range.

Moreover, the illuminating device 1 of this embodiment is comprised so that the volt | bolt itself which is an attachment component may irradiate light. Therefore, there is no need for attachment members such as fixing brackets and a plurality of bolts for attachment to the vehicle, as in conventional lighting equipment for vehicles.
Specifically, if the screw garnish 100 of the vehicle body V or the door mirror 200 is provided with screw holes 102, 104, 202 that are screwed into the screw grooves 21 formed in the screw portion 20 of the lighting device 1, the screw holes The lighting device 1 can be attached to the vehicle body simply by screwing the threaded portion 20 of the lighting device 1 into 102, 104, and 202. As described above, according to the present invention, it is not necessary to screw a plurality of places as in the case of a conventional lighting device for a vehicle.

Note that the screw holes 102, 104, and 202 allow the screw portion 20 to contact the metal portion of the vehicle body V when the screw portion 20 of the lighting device 1 is screwed together. With this configuration, since grounding can be performed from the vehicle body V (grounding to the vehicle body), the connection to the lighting device 1 is a connector of the power supply line 70 that receives the supply of plus power to the power source provided in the vehicle body V. It is only necessary to connect 75.
Thus, according to this embodiment, when attaching the illuminating device 1 to the vehicle body V, it is only necessary to perform the connecting work of the plus power source, and therefore the connecting operation of the illuminating device 1 can be simplified.

Further, in this embodiment, since the bolt head 10 of the lighting device is formed of a transparent synthetic resin, the degree of freedom in designing the shape of the bolt head 10 is increased.
Therefore, according to this embodiment, the illuminating device 1 with the bolt head 10 of various designs can be made.
Here, the thing of FIG. 1 thru | or 3 mentioned above, and the example of the illuminating device which changed the shape of the bolt head 10 are shown in FIG. Note that the illustrated illumination devices 2 and 3 have the same configuration except that the illumination device 1 and the bolt head shape described above are different.
As shown to Fig.5 (a), the illuminating device 2 has the cross bit 16 formed in the hexagonal bolt head 15. FIG. Moreover, as shown in FIG.5 (b), as for the illuminating device 3, the recessed part 18 engaged with the hexagonal wrench is formed in the round-shaped head 17. FIG.

Thus, according to the present embodiment, it is only necessary to provide the vehicle body V with a screw hole to be screwed with the screw portion of the bolt and screw the screw portion into the screw hole. That is, according to the present embodiment, it is not necessary to screw a plurality of places as in the conventional lighting unit for a vehicle, so that the labor of attachment work is reduced.
In addition, the lighting device of the present embodiment does not require a box-like base body or the like unlike a conventional lighting device for a vehicle. The lighting device according to the present embodiment only needs to secure a space for fixing the bolts, and thus can save space. Moreover, since a plurality of attachment members are not required, the lighting device can be reduced in weight.

In addition, this invention is not limited to embodiment mentioned above, A various deformation | transformation is possible within the range of the summary of this invention.
For example, you may make it change the shape of the washer 30, the board | substrate 50 demonstrated in the said embodiment, and the bottom face part 12 of the bolt head 10 to the shape shown in FIG. Hereinafter, a first modification of the present embodiment will be described with reference to FIG. In the description of this modification, only the configuration changed from the above-described embodiment will be described.

Specifically, a fitting portion 310 having a rectangular tube shape (shown in FIG. 6 as an example of a hexagonal tube shape) that is substantially parallel to a direction orthogonal to the upper surface is formed on the upper surface of the washer 30. Has been. Further, a cutout portion 310 a for attaching the substrate 50 is formed at the upper end of the fitting portion 310.
The board 50 on which the LED 40 is mounted is formed in a U-shape in which both ends of the plate are bent at substantially right angles, and is formed in the fitting portion 310 of the washer 30 at both ends of the U-shape. A tongue 52 to be fitted with the notch 310a is formed. Then, the substrate 50 is attached to the washer 30 by fitting the tongue portion 52 of the substrate 50 into the notch 310 a of the fitting portion 310 formed on the upper surface of the washer 30.
Further, the bolt head 10 is formed in a square shape (in FIG. 6, an example in which it is formed in a hexagonal shape), and a corner having a shape that fits with the fitting portion 310 of the washer 30 on the bottom surface portion 12. A hole 130 (in FIG. 6, an example formed in a hexagonal shape) is opened. The bolt head 10 and the washer 30 are fixed by inserting and fitting the rectangular tube fitting portion 310 of the washer 30 into the square hole 130.
Also in this modification, an O-ring 90 (not shown in FIG. 6) is sandwiched between the bolt head 10 and the washer 30 as in the above embodiment, but an adhesive is attached to the O-ring 90. The bolt head 10 and the washer 30 may be fixed together.

  Thus, in this modification, the bolt head 10 and the washer 30 are inserted by fitting the fitting portion 310 of the washer 30 into the square hole 130 opened in the bottom surface portion 12 of the bolt head 10. And are fixed. For this reason, according to this modification, it is not necessary to weld the bolt head 10 and the washer 30 as in the above-described embodiment. That is, according to this modification, the assembly process of the lighting device can be simplified as compared with the above-described embodiment, and thus the production cost can be reduced.

  Moreover, although the example which fixed the bolt head 10 to the washer 30 was shown in the said embodiment, it is not specifically limited to this. For example, the screw part 20, the substrate 50, and the bottom face part 12 of the bolt head 10 may be changed to the shape shown in FIG. 7 and the bolt head 10 may be directly fixed to the screw part 20. Hereinafter, a second modification of the present embodiment will be described with reference to FIG. In the description of this modification, only the configuration changed from the above-described embodiment will be described.

As shown in the drawing, a flange 25 is formed at the upper end of the screw portion 20, and the upper surface of the flange 25 has a rectangular tube shape (in FIG. 7, a hexagonal tube shape) substantially parallel to the direction orthogonal to the upper surface. The fitting part 26 is formed). Further, a cutout portion 26 a for attaching the substrate 50 is formed at the upper end of the fitting portion 26.
Moreover, the board | substrate 50 which mounted LED40 is formed similarly to FIG. 6 mentioned above. That is, the substrate 50 is formed in a U shape in which both ends of the plate shape are bent at substantially right angles, and the notch portion 26a formed in the fitting portion 25 of the screw portion 20 at both ends of the U shape. The tongue 52 to be fitted is formed. Then, the substrate 50 is attached to the screw portion 20 by fitting the tongue portion 52 of the substrate 50 into the notch 26 a of the fitting portion 26 formed on the upper surface of the screw portion 20.

The bolt head 10 is formed in the same manner as in FIG. That is, the bolt head portion 10 is formed in a square shape (in FIG. 7, an example of a hexagonal shape is shown), and the fitting portion 26 formed on the flange portion 25 of the screw portion 20 is formed on the bottom surface portion 12. A square hole 130 (in FIG. 7, an example formed in a hexagonal shape) is formed. The bolt head 10 and the screw part 20 are fixed by inserting and fitting the fitting part 26 formed on the flange 25 of the screw part 20 into the square hole 130.
In this modification, the ground wire 60 (not shown in FIG. 7) for supplying a negative power source has one end connected to the substrate unit 50 and the other end connected to the flange 25 (or the cylindrical inner portion of the screw portion 20). To the side) by soldering or the like.

  As described above, according to this modification, by inserting the fitting portion 26 formed on the flange 25 of the screw portion 20 into the square hole 130 of the bottom surface portion 12 of the bolt head portion 10, The screw part 20 is directly fixed. Therefore, according to the present modification, the washer 30 used in the above embodiment is not necessary, and the component cost can be reduced. Moreover, in this modification, since it is not necessary to weld the bolt head 10 and the screw part 20 similarly to the 1st modification mentioned above, production cost can also be reduced.

It is a side view of an embodiment concerning the present invention. It is a top view of an embodiment concerning the present invention. It is a schematic perspective view of the illuminating device of embodiment of this invention. It is a figure which shows the example of application of the illuminating device of embodiment of this embodiment. It is the figure which showed the example which changed the shape of the volt | bolt head of embodiment of this invention. It is a schematic perspective view of the washer, board | substrate, and volt | bolt head of the 1st modification of embodiment of this invention. It is a schematic perspective view of the screw part of the 2nd modification of an embodiment of the present invention, a substrate, and a bolt head.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 ... Car body 1, 2, 3 ... Lighting equipment 10, 15, 17 ... Bolt head 11 ... Upper surface part 12 ... Bottom surface part 12a ... Board | substrate support part 13 ... Hole 16 ... Cross bit 18 ... Recessed part 20 ... Screw part 21 ... Screw Groove 22 ... Through hole 25 ... Flange 26 ... Fitting part 26a ... Notch part 30 ... Washer 31 ... Claw part 32 ... Opening 40 ... LED
DESCRIPTION OF SYMBOLS 50 ... Board | substrate 52 ... Tongue part 60 ... Power supply line 70 ... Power supply line 75 ... Connector 80 ... Shield member 90 ... O-ring 100 ... License garnish 102, 104 ... Screw hole 110 ... License plate 130 ... Square hole 200 ... Door mirror 202 ... Screw Hole 310 ... Fitting part 310a ... Notch

Claims (4)

A bolt head formed of a transparent synthetic resin and having a space inside,
A screw portion formed at the lower end of the bolt head,
A lighting device characterized in that a board unit on which an LED is mounted is accommodated in the space of the bolt head. A bolt head formed of a transparent synthetic resin and having a space inside,
A board unit mounted with LEDs housed in the space of the bolt head;
A disc-shaped washer having an opening, fixed to the lower end of the bolt head;
A screw portion fixed to the lower surface of the washer;
A through hole formed along the axis of the threaded portion, with one end communicating with the opening and the other end opened;
An illumination apparatus comprising: a power supply line for supplying power to the LED, one end of which is connected to the substrate unit and the other end is led out to the outside through the opening and the through hole.   The lighting device according to claim 1, wherein a lens cut for diffusing light from the LED is formed on an upper surface portion of the bolt head. The screw portion and the washer are formed of metal,
The circuit board unit includes a ground wire having one end connected to the substrate unit and the other end connected to the washer, and one terminal of the LED is grounded via the ground wire, washer, and screw portion. The lighting device according to claim 2 or claim 3.

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