JP2008155751A - Light emitting diode lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED lighting device capable of realizing a various range of lighting while reducing a cost through a common setting of component parts and further capable of setting an optical axis in a slant manner. <P>SOLUTION: This light emitting diode lighting device has a flexible printed substrate 30 having LED 35, a case 10 storing the substrate and having a through-pass hole 13 at a wall part oppositely facing against LED on the substrate so as to irradiate an external side with light generated by LED, and a cylindrical connector housing 21 arranged at the wall of the case and constituting a connector 20 by position setting and fixing one end of the substrate in an opening part. The case is provided with substrate fixing protrusions 17A to 17C for selectively position setting and fixing the substrate stored in the case to one of a plurality of positions. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an LED lighting device useful as an automotive interior lighting device.

  Recently, LED-type lighting devices have been used for interior lighting of automobiles. Patent Document 1 discloses an LED lamp device that is useful as an automotive interior lighting device.

This lamp device includes a bullet-type LED, a circuit portion, and a case portion. The case part has an LED seat for holding the LED, the circuit part has a metal plate embedded in the case part, the metal plate has an LED connection part exposed from the case part, and the LED connection The portion is electrically coupled to the LED lead.
JP 2003-258314 A

  By the way, the conventional LED lamp device controls the irradiation range with a lens of a bullet-type LED, so that it is used as a common indoor lighting device such as indoor door handle lighting, front / rear foot lighting, glove box lighting, etc. In this case, there is a problem in that the parts cannot be shared because the irradiation range varies depending on each use location.

  In addition, since a metal plate is used for the circuit part, there is a problem that the number of parts in the wiring part increases.

  Further, since the bullet-type LED is received by a cylindrical LED seat provided in the case portion, a special seat shape must be adopted when the optical axis of the LED is set obliquely. However, it was impossible to make the case part common with the case where the optical axis was vertical.

  In consideration of the above circumstances, an object of the present invention is to provide an LED lighting device that can realize various irradiation ranges and can set an optical axis obliquely while reducing costs by using common parts. .

  The invention according to claim 1 has a substrate on which the LED is mounted, and a through-hole for irradiating the light emitted from the LED to the outside on the wall portion facing the LED on the accommodated substrate while accommodating the substrate inside. A case, and a cylindrical connector housing portion that constitutes a connector by positioning and fixing one end of the substrate in the opening, and the case includes the case. Substrate fixing means for selectively positioning and fixing the accommodated substrate at one of a plurality of positions is provided.

  A second aspect of the present invention is the LED lighting device according to the first aspect, wherein a detachable lens is provided in the through hole.

  The invention of claim 3 is the LED lighting device according to claim 1 or 2, wherein a flexible substrate is used as the substrate, a card edge connector is provided at one end of the flexible substrate, and the card edge connector is The connector is configured by being positioned and fixed in the opening of the connector housing portion.

  A fourth aspect of the present invention is the LED lighting device according to the third aspect, wherein the case has a rectangular front wall having the through hole in a central portion, and a rectangular rear wall facing the front wall with a space therebetween. A rectangular box-shaped case main body having a wall, three side walls connecting the front wall and the rear wall, and one side opening, and a cover that closes the opening by being attached to the case main body. The board fixing means is provided on a side wall facing the opening, and the connector housing portion is provided on a side wall adjacent to the side wall provided with the board fixing means.

  According to invention of Claim 1, the position of LED with respect to a through-hole can be variously changed by changing the fixing position of the board | substrate in a case. Therefore, the irradiation range can be selected and set from a plurality of types determined in advance, and can be used for a plurality of usage points (indoor door handle lighting, front / rear foot lighting, glove box lighting, etc.) with different irradiation ranges. The lighting device can be used in common, and the cost can be reduced by sharing the device. In addition, if the substrate is fixed to the case in advance so that the LED is illuminated obliquely with respect to the through-hole, the vehicle can be equipped with the illumination device even in a positional relationship where the through-hole is inclined with respect to the target irradiation range. Satisfactory illumination is possible even when there are layout restrictions. Further, since the connector can be configured only by positioning one end of the board within the opening of the connector housing portion, an extra wiring member is unnecessary, and the cost can be reduced by reducing the number of parts.

  According to the invention of claim 2, by attaching a lens to the through hole, the irradiation range can be freely changed by the lens.

  According to the invention of claim 3, since the flexible substrate is used for the substrate on which the LED is mounted, the flexibility of the substrate is used to change the fixing position of the substrate and to care about the handling of the substrate with respect to the connector housing portion. It can be done freely without losing.

  According to the invention of claim 4, the substrate is accommodated in the inside of the case body from the opening provided on one side of the case body, and the substrate is fixed to an appropriate substrate fixing means provided on the side wall facing the opening. The position of the LED on the substrate relative to the through hole can be determined. Further, the card edge connector provided at one end of the board is positioned in the opening of the connector housing portion to constitute the connector, and the LED lighting device can be completed by closing the opening of the case body with the cover in this state. . Therefore, it is possible to easily assemble through an opening provided on one side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 is an exploded perspective view of the LED lighting device of the first embodiment, FIG. 2 is an external perspective view of the assembled product, FIG. 3 is an external perspective view of the assembled product when no lens is used, and FIG. FIG. 5 is a perspective view showing the internal structure of the case body of the apparatus, FIG. 6 is an internal structure of the apparatus when the LED and the through hole are set at a close distance. FIG. 7A is a perspective view, FIG. 7B is a principle diagram showing irradiation conditions, and FIG. 7 is a diagram showing an internal configuration of the apparatus when the LED and the through hole are set at a distant distance. Is a perspective view, (b) is a principle diagram showing irradiation conditions, FIG. 8 is a diagram showing an internal configuration of the apparatus when the LED and the through-hole are set in an oblique positional relationship, (a) is a perspective view, b) is a principle diagram showing irradiation conditions.

  As shown in FIG. 1, the LED lighting device according to the embodiment accommodates a flexible printed circuit board 30 on which an SMD (surface mount) type LED 35 is mounted by soldering or the like, and accommodates the flexible printed circuit board 30 inside. A case 10 having a through hole 13 for irradiating light emitted from the LED 35 to the outside on a wall portion (front wall 11 a) facing the LED 35 on the flexible printed circuit board 30, and a lens 40 that is detachably attached to the through hole 13. And is composed of.

  The case 10 includes a case main body 11 and a cover 12. The case main body 10 includes a rectangular front wall 11a having a through-hole 13 in the center, and a rectangular rear wall 11b facing the front wall 11a with a space therebetween. The front wall 11a and the rear wall 11b have three side walls 11c, 11d, and 11e, and have a rectangular box shape in which one side surface without the side walls is opened. The cover 12 is configured to close the opening on one side surface of the case main body 11 by being attached to the case main body 11, and the case main body 11 and the cover 12 have inlay portions 11i and 12i that are fitted to each other. Is provided.

  The through hole 13 has a semicircular cutout 13A at the back end of the groove portion 14 provided in the front wall 11a of the case body 11 and a semicircular cutout at the tip of the projecting piece 15 provided in the cover 12 so as to fit into the groove portion 14. By combining with 13B, a circular hole is formed.

  The lens 40 is provided with two flanges 41 with a gap in the optical axis direction around the central lens portion 45, and an annular groove 42 between the two flanges 41 is fitted into the peripheral edge of the through-hole 13. It is designed to be detachably attached to the through hole 13.

  The flexible printed circuit board 30 is provided at the center of a rectangular base portion 31 with an LED 35 mounted at the center, a bendable strip-shaped surplus portion 32 formed slightly narrower than the base portion 31, and the end of the surplus length portion 32. Card edge connector 33. In addition to the LED 35, components (such as a resistor and a diode) that make the LED 35 shine are also mounted.

  Further, the card edge connector 33 provided at one end of the flexible printed circuit board 30 is positioned and fixed in the opening 21a on the wall portion (side wall 11c) of the case 10, so that a rectangular cylindrical connector housing constituting the connector 20 is formed. A portion 21 is provided.

  Further, as shown in FIG. 5, the flexible printed circuit board 30 accommodated in the case main body 11 is placed on a plurality of (three in this example) positions (on the front wall 11a) on the side wall 11d facing the opening of the case main body 11. Front-side U-shaped substrate fixing protrusions (substrate fixing means) 17A to 17C for selectively positioning and fixing at one of a near position, a far position, and an oblique position) are provided. These board fixing protrusions 17A to 17C are paired on the left and right, respectively, and by inserting the corners of both ends of the base portion 31 of the flexible printed circuit board 30 into the grooves 17m of the left and right board fixing protrusions 17A to 17C, flexible The printed circuit board 30 can be held. Note that a similar substrate fixing protrusion (not shown) is also provided on the inner surface of the cover 12 so as to correspond to the substrate fixing protrusions 17A to 17C on the case body 11 side. The corners on both side edges of 31 can be securely held and fixed.

  The connector housing portion 21 described above is provided on the side wall 11c adjacent to the side wall 11d provided with the board fixing protrusions 17A to 17C of the case body 11. As shown in FIG. 4, a through lock portion 18 is provided on the outer surface of the rear wall 11 b of the case body 11 for fixing to a member on the vehicle side when the vehicle is mounted on a vehicle, for example. In addition, a long hole 16 into which the card edge connector 33 of the flexible printed circuit board 30 is inserted is provided on the inner surface of the side wall 11 c provided with the connector housing portion 21.

  Next, the case where the LED lighting apparatus of embodiment is assembled is demonstrated.

  First, the flexible printed circuit board 30 is accommodated in the inside of the case body 11 from the opening provided on one side of the case body 11, and the bases of the flexible printed circuit board 30 are formed on the substrate fixing protrusions 17A to 17C provided on the side wall 11d facing the opening. Side edge corners are inserted into the respective groove portions 17m of the portion 31. Further, the card edge connector 33 is inserted into the long hole 16 while the surplus length portion 32 is bent, and is positioned and fixed at a predetermined position of the opening 21 a of the connector housing portion 21. Thereby, the connector 20 for connecting to an external power supply wire harness is configured.

  Next, if necessary, the lens 40 is attached to the through-hole 13 and the opening of the case body 11 is closed with the cover 12. Further, when the lens 40 is unnecessary, the opening of the case body 11 is closed with the cover 12 without attaching the lens 40. Thereby, the LED illumination device as shown in FIGS. 2 and 3 is completed.

  At the time of this assembly, as shown in FIG. 6, when the flexible printed board 30 is fixed to the board fixing protrusion 17A located near the front wall 11a, the distance between the LED 35 and the through hole 13 is set small. Therefore, the irradiation range S1 outside the case 10 can be set large.

  Further, as shown in FIG. 7, when the flexible printed board 30 is fixed to the board fixing protrusion 17B located far from the front wall 11a, the distance between the LED 35 and the through hole 13 can be set large. The irradiation range S2 outside the case 10 can be set small.

  Further, as shown in FIG. 8, when the flexible printed board 30 is fixed to the board fixing protrusion 17C in an oblique posture with respect to the front wall 11a, the relationship between the optical axis of the LED 35 and the through-hole 13 is set diagonally. Therefore, the irradiation range S3 outside the case 10 can be set to a size corresponding to oblique illumination.

  As described above, by changing the fixing position of the flexible printed board 30 in the case 10, the position of the LED 35 with respect to the through hole 13 can be changed variously. Therefore, the irradiation range can be selected and set from a plurality of predetermined types, and a plurality of use places having different irradiation ranges (for example, indoor door handle lighting, front / rear foot lighting, glove box lighting, etc.) ) Can be used in common, and the cost can be reduced by making the devices common.

  In addition, when the flexible printed circuit board 35 is fixed to the case 10 so that the LED 35 is illuminated obliquely with respect to the through hole 13 in advance, the lighting device is mounted on the vehicle even in a positional relationship in which the through hole 13 is inclined with respect to the target irradiation range. Therefore, even if there are layout restrictions, satisfactory illumination is possible.

  In addition, since the connector 20 can be configured simply by positioning the card edge connector 33 at one end of the flexible printed circuit board 30 in the opening 21a of the connector housing portion 21, an extra wiring member is unnecessary, and the number of components is reduced. Can reduce costs.

  Further, as shown in FIG. 2, by attaching a lens 40 to the through hole 13, the irradiation range can be freely changed by the lens 40.

  Further, since the flexible printed circuit board 30 is used as a board on which the LED 35 is mounted, a mounting part (base part 31), a wiring part (extra length part 32), and a connector part (card edge connector 33) for components such as the LED 35 are provided. Since a single flexible printed circuit board 30 can be integrated, the number of parts can be reduced. Further, by utilizing the flexibility of the extra length portion 32 of the flexible printed circuit board 30, the fixing position of the base portion 31 can be freely changed without worrying about the handling of the card edge connector 33 with respect to the connector housing portion 21. it can.

  Further, the flexible printed circuit board 30 is accommodated in the case body 11 from the opening provided on one side of the case body 11, and the flexible printed circuit board 30 is placed on appropriate substrate fixing protrusions 17 </ b> A to 17 </ b> C provided on the side wall 11 d facing the opening. By fixing the base portion 31, the position of the LED 35 with respect to the through hole 13 can be determined. Further, the card edge connector 33 provided at one end of the flexible printed circuit board 30 is positioned in the opening 21a of the connector housing portion 21 to constitute the connector 20, and in this state, the opening of the case body 11 is closed with the cover 12, An LED lighting device can be completed. Therefore, it is possible to easily assemble through the opening provided on one side surface, and the productivity can be improved.

  When mounting, for example, when applied to lighting for an automobile door handle, the through lock 18 provided on the rear surface of the case 10 is fitted into the T-shaped groove 61 provided in the door trim 60 as shown in FIG. In this case, the LED lighting device can be easily fixed to the door trim 60. In addition, when applied to illumination for a glove box, the through lock 18 may be similarly fitted into a T-shaped groove provided in the constituent material of the glove box. In addition, it can also be applied to front / rear foot lighting, ceiling indirect lighting, cup holder lighting, and trunk lighting.

  Moreover, in the said 1st Embodiment, although the case where the board | substrate fixed protrusion 17A-17C was provided in case 10 and the flexible printed circuit board 30 was fixed was described, like 2nd Embodiment of FIG. Two protrusions 39 are provided on both side edges of the base portion 31, and board fixing insertion holes (substrate fixing means) 19 into which the protrusions 39 can be inserted are respectively formed in the side wall 11 d of the case body 11 and the cover 12. The base portion 31 of the flexible printed circuit board 30 may be fixed to the case 10 by providing and inserting each protrusion 39 into the board fixing insertion hole 19.

It is a disassembled perspective view of the LED lighting apparatus of 1st Embodiment of this invention. It is an external appearance perspective view of the assembly completion product of the LED lighting device. It is an external appearance perspective view of the assembly completion product when not using a lens. It is a perspective view which shows the structure of the back surface side of the assembly completion product. It is a perspective view which shows the internal structure of the case main body of the LED lighting apparatus. It is a figure which shows the internal structure of the apparatus at the time of setting LED and a through-hole to a near distance, (a) is a perspective view, (b) is a principle figure which shows irradiation conditions. It is a figure which shows the internal structure of the apparatus at the time of setting LED and a through-hole to a distant distance, (a) is a perspective view, (b) is a principle figure which shows irradiation conditions. It is a figure which shows the internal structure of the apparatus at the time of setting LED and a through-hole to the diagonal positional relationship, (a) is a perspective view, (b) is a principle figure which shows irradiation conditions. It is a disassembled perspective view of the LED lighting apparatus of 1st Embodiment of this invention. It is explanatory drawing of the attachment structure with respect to the door trim of the LED lighting apparatus of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Case 11 Case main body 11a Front wall 11b Rear wall 11c-11e Side wall 12 Cover 13 Through-hole 17A-17C Board | substrate fixing protrusion (board | substrate fixing means)
19 Substrate fixing insertion hole (Substrate fixing means)
20 Connector 21 Connector Housing 21a Opening 30 Flexible Printed Circuit Board 33 Card Edge Connector 35 LED
40 lenses

Claims (4)

A board on which an LED is mounted;
A case having a through-hole that irradiates the light emitted by the LED to the outside in the wall portion facing the LED on the accommodated substrate while accommodating the substrate inside.
A cylindrical connector housing portion that is provided on the wall portion of the case, and that constitutes a connector by positioning and fixing one end of the substrate in the opening;
An LED lighting device, wherein the case is provided with substrate fixing means for selectively positioning and fixing the substrate accommodated in the case at one of a plurality of positions. The LED lighting device according to claim 1,
An LED lighting device, wherein a lens that can be attached to and detached from the through hole is provided. The LED lighting device according to claim 1 or 2,
A flexible board is used as the board, a card edge connector is provided at one end of the flexible board, and the card edge connector is positioned and fixed in the opening of the connector housing portion to constitute a connector. LED lighting device. The LED lighting device according to claim 3,
The case is
A rectangular front wall having the through hole in the center, a rectangular rear wall facing the front wall with a space therebetween, and three side walls connecting the front wall and the rear wall, and one side surface is open A rectangular box-shaped case body;
A cover that closes the opening by being attached to the case body, and
The substrate fixing means is provided on a side wall facing the opening,
The LED lighting device, wherein the connector housing portion is provided on a side wall adjacent to the side wall provided with the substrate fixing means.

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