JP2001035209A - Led fixing structure to lighting fixture for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED fixing structure to a lighting fixture for a vehicle, facilitating mounting of LEDs without using solder, enabling faulty LEDs to be replaced individually and easily, and enabling LEDs to be disposed along a curved surface shape. SOLUTION: Two bendable wiring plates 15 are disposed parallel to each other, a plurality of LEDs 11 are disposed on the wiring plates 15 in the longitudinal direction thereof, and one and the other of a pair of leads 12 of each LED 11 are connected to one and the other, respectively, of the two wiring plates 15 via metallic connection parts 20 housed in each holder 30, thus forming a ladder-like assembly. Each metallic connection part 20 has lead fit parts 23, to which the leads 12 of the LED are insertingly connected and a rib fit part 22 to which a rib 16 formed upright on the wiring plate is connected insertingly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED fixing structure for a vehicle lamp using an LED (light emitting diode) as a light source.

[0002]

2. Description of the Related Art Recently, LEDs have been used as light sources for tail lamps and stop lamps of vehicles. When an LED is used as a light source of such a vehicle lamp, as shown in FIG. 3, each lead 2 of a large number of LEDs 1 is soldered on a printed circuit board 5 (a soldering portion is indicated by reference numeral 3). L on the housing via the printed circuit board 5
At present, ED1 is attached.

[0003]

However, the structure in which the LED 1 is soldered on the printed circuit board 5 has the following problems.

(A) Due to soldering, LED mounting workability is poor.

(B) Heat at the time of soldering may cause LED failure.

(C) Since the solder contains harmful substances,
A problem during recycling.

(D) It is difficult to replace only the failed LED individually.

(E) Since the printed circuit board is flat, it is difficult to correspond to the curved surface of the lamp.

The present invention has been made in consideration of the above circumstances, and can easily mount an LED without using solder.
It is an object of the present invention to provide an LED fixing structure for a vehicular lamp in which replacement of individual LEDs can be easily performed and LEDs can be arranged along a curved surface.

[0010]

According to the first aspect of the present invention, two bendable wiring members are arranged in parallel with each other, a plurality of LEDs are arranged in the longitudinal direction of the wiring member, and
One and the other of the pair of leads are respectively connected to one and the other of the two wiring members via a detachable fitting means, thereby forming a ladder-like assembly. I do.

In this structure, the leads of the LED are connected to the wiring member via the fitting means which can be inserted and removed, so that only the failed LED can be individually replaced. In addition, since the wiring of the LED is performed by a bendable wiring member instead of the wiring by the conductor on the printed circuit board, the LED is arranged along the curved shape by appropriately bending the wiring member. Can be.

According to a second aspect of the present invention, there is provided an LED fixing structure for a vehicle lamp according to the first aspect, wherein the wiring member includes:
The present invention is characterized in that two strip-shaped wiring plates are arranged in parallel with each other with their wide faces facing in the same direction.

In this structure, since a strip-shaped wiring plate is used as the wiring member, the wiring plate can be freely bent in a direction perpendicular to the surface of the wiring plate, but is parallel to the surface of the wiring plate. The deformation in the direction can be suppressed.

According to a third aspect of the present invention, there is provided an LED fixing structure for a vehicle lighting device according to the second aspect, wherein connection fittings are respectively arranged between the respective wiring plates and the leads of the LEDs to be connected thereto. L is used as the fitting means for each connection fitting.
A lead fitting portion for inserting and connecting a lead of the ED and a rib fitting portion for inserting and connecting a rib formed upright on the wiring plate are formed.

In this structure, instead of directly connecting the wiring plate and the lead of the LED, a connection fitting as a separate component is interposed between them, and the lead fitting portion and the rib fitting portion of the connection fitting are provided at the lead fitting portion and the rib fitting portion. By inserting the leads of the LED and the ribs of the wiring plate respectively, the LED and the wiring plate are electrically and mechanically coupled. Therefore, it is possible to collectively provide the connecting and fitting means for inserting and removing the lead and the rib.

According to a fourth aspect of the present invention, there is provided an LED fixing structure for a vehicle lighting device according to the third aspect, wherein a set of connecting fittings arranged for each of the wiring plates for one LED is provided in one holder. And the holder is held by ribs formed on the two wiring plates.

In this structure, a set of connection fittings arranged for each wiring plate for one LED is accommodated in one holder, so that one set in which the connection fitting and the LED are set in the holder is one. Can be attached to and detached from the wiring plate.

According to a fifth aspect of the present invention, there is provided an LED fixing structure for a vehicle lamp according to the third or fourth aspect, wherein the LED is a four-legged type having two pairs of leads, and Is provided with two lead fitting portions for fitting two leads.

In this structure, two pairs of LEDs, a total of four leads, of each pair, a total of two leads are fitted into the two lead fitting portions of one connection fitting, and On the other hand, 2
The four leads are electrically connected to the wiring plate by fitting the two leads to the two lead fitting portions of the other connecting metal and connecting each connecting metal to the rib of the respective wiring plate. it can.

According to a sixth aspect of the present invention, there is provided an LED fixing structure for a vehicle lamp according to any one of the third to fifth aspects, wherein the ribs are arranged in the same direction in a state where the wiring plate is curved. Thus, the directional directions of the LEDs are made uniform.

In this structure, the directional directions of the LEDs are aligned in a state where the wiring plate is curved.
ED light can be emitted.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of the LED fixing structure of the embodiment, and FIG. 2 is a perspective view of an assembled state. In the figure, reference numeral 11 denotes a four-legged LED, and two pairs, a total of four leads 12, 12,...

As a wiring member of the LED 11, two parallel wiring plates 15 in the form of a thin strip are prepared. As a component for attaching the LED 11 to the wiring plates 15, 15, for one LED 11, one pair of connection fittings 20, 20 and one resin-made housing that accommodates the pair of connection fittings 20, 20. A holder 30 is provided.

The pair of connection fittings 20 and 20
Is a connecting part for mechanically and electrically removably connecting one and the other of the pair of leads 12 to one and the other of the two wiring plates 15 respectively.

The strip-shaped wiring plates 15 and 15 are arranged in parallel with each other with their thick surfaces facing each other and with their wide surfaces facing in the same direction (vertical direction in the figure). Although it can be freely bent, it cannot be easily bent in the left-right direction orthogonal to it. Each wiring plate 15 is provided with ribs 16 projecting at equal intervals in the longitudinal direction. The rib 16 is connected to each wiring plate 1.
5, it bends into an L shape and protrudes upward from the inner edge.

The pair of connecting fittings 20, 20 have the same shape and are arranged in opposite directions. The connection fitting 20
One metal plate is formed by press molding, and a T-shaped substrate portion 21 as viewed from above, one rib fitting portion 22 for inserting and connecting the rib 16 formed upright on the wiring plate 15, and L
The ED 11 has two lead fitting portions 23 for inserting and connecting the two leads 12. The rib fitting portion 22 and the lead fitting portion 23 are arranged on the side of the substrate portion 21 with the insertion direction of the rib 16 and the lead 12 facing up and down. It has a spring function to hold it in pressure contact.

The holder 30 has two connecting fittings 2
In order to be able to accommodate 0 and 20, two sets of holes including one rib fitting portion receiving hole 32 and two lead fitting portion receiving holes 33 are provided. In this case, at least the rib fitting portion accommodation hole 32 penetrates vertically.

Next, the assembly procedure will be described.

First, two connection fittings 20 are attached to the holder 30.
Set 20. That is, the lead fitting part 23 of the connection fitting 20 is inserted into the lead fitting part hole 33 of the holder 30 from above, and the rib fitting part 22 of the connection fitting 20 is inserted into the holder 30.
Into the hole 32 for the rib fitting portion.

Next, the holder 30 is set between the two wiring plates 15, 15 arranged in parallel, and the two wiring plates 15, 15 are set on the upward ribs 16, 16.
Two connection fittings 20 set on the holder 30 from above,
The respective 20 rib fitting portions 22, 22 are fitted. By doing so, the holder 30 is held by the two wiring plates 15, 15 by the ribs 16. Since the rib 16 is formed in an L shape having a bent portion, the insertion length of the rib 16 into the holder 30 is limited by the bent portion.

Next, the LED 11 is inserted into the lead fitting portions 23 of the connection fittings 20 and 20 set in the holder 30, respectively.
, Two pairs of four leads 12, 12, ... are inserted. In this case, considering the polarity, the two leads 12 on one pole side,
12 is connected to two lead fitting portions 23 of one connection fitting 20.
To the other two poles 12 and 12 on the other pole side.
The other connection fitting 20 is inserted into the two lead fitting portions 23. Thereby, the LED 11 is mechanically coupled to the connection fittings 20, 20, and is electrically connected to the wiring plates 15, 15 via the connection fittings 20, 20.

By repeating the above operation for each LED 11, the wiring plates 15, 15 as shown in FIG.
LEDs 11 arranged at intervals in the longitudinal direction
Are connected to the two wiring plates 15, 15 via the connection fittings 20, 20 and the holder 30, and the ladder-like assembly 10
Is configured.

In this structure, the connection fittings 20, 20 are fitted to the ribs 16 of the wiring plates 15, 15, and
By fitting the leads 12 of the LED 11 to 0 and 20,
Since the wiring plates 15 and 15 and the LED 11 are connected, soldering is unnecessary, and all the problems when soldering can be solved.

For example, the mounting method does not apply heat to the LED 11, so that the reliability of the LED 11 can be improved, and since no solder is used, there is no harmful substance.
Recycling becomes easier. In particular, since the wiring plate 15, the holder 30, the connection fitting 20, and the LED 11 can be disassembled into individual parts, recycling is easy.

Further, since the LED 11 is merely fitted in the lead fitting portion 23 of the connection fitting 20, when it fails, only the failed LED 11 can be easily replaced. The LED 11 can be replaced together with the holder 30.

Further, the holder 30, the connection fitting 20, the LED
11 is assembled from the same direction (upper direction), so that the insertion / removal work can be easily performed, and the assembling and replacement can be facilitated.

Since the strip-shaped wiring plate 15 is used as a wiring member, the wiring plate 15 can be freely bent in a direction perpendicular to the surface of the wiring plate 15. As a result, the LEDs 11 can be easily arranged along the curved shape of the lamp. At this time, by aligning the projecting directions of the ribs 16 in accordance with the shape after the wiring plate 15 is curved, as shown in FIG.
The direction of the ED 11 can be made uniform and LE
The light of D11 can be irradiated in a certain direction.

In the above embodiment, the strip-shaped wiring plate 15 is used as the wiring member, but a wiring member having a form other than the strip-shaped wiring plate may be used.

The lead fitting portions are formed directly on the wiring plates 15 and 15 arranged in parallel without using the holder 30 or the connection fitting 20, and the LEDs 1 are provided on the lead fitting portions.
It is also possible to detachably connect one lead.

[0041]

As described above, according to the first aspect of the present invention, the LED lead is connected to the wiring member through the releasable fitting means.
Only failed LEDs can be individually replaced. As a result, replacement costs can be significantly reduced as compared to replacing the entire assembly to which a large number of LEDs are attached. Further, since no solder is used for connecting the LED lead and the wiring member, all the problems when using solder can be solved.

Further, since the wiring of the LED is performed by a bendable wiring member instead of the wiring by the conductor on the printed board, the LED is arranged along the curved shape by appropriately bending the wiring member. This increases the degree of freedom of layout when arranging the LEDs.

According to the second aspect of the present invention, since the strip-shaped wiring plate is used as the wiring member, the wiring plate can be freely bent in a direction perpendicular to the surface of the wiring plate. Can be suppressed in a direction parallel to the plane. Therefore, it is possible to determine the direction in which the wiring plate is curved, and it becomes easy to arrange the LEDs along the curved shape of the vehicle body or the lamp. Further, since the wiring plates extend at regular intervals like parallel lines, the LED can be easily assembled. Further, since it is a plate, it can be easily processed by a press or the like, and a rib or the like can be easily provided as a connecting means with the LED.

According to the third aspect of the present invention, since the connection fitting is disposed between the lead of the LED and the wiring plate, the connection fitting is provided with the fitting portion of the rib projecting from the wiring plate and the LED.
The LED and the wiring plate can be detachably connected only by forming the lead fitting portion. Therefore, the processing can be centralized in the connection fitting, and it is sufficient only to protrude the rib on the wiring plate.

That is, the LED can be connected to the wiring plate by directly forming the fitting means for removably fitting the lead of the LED on the wiring plate. The shape of a commonly used wiring plate is complicated by the large number of fitting means. On the other hand, when the connecting fitting as an intermediate part is used as in the invention of claim 3, all the complicated fitting means including the spring portion can be collectively provided in the connecting fitting, so that they are common parts. The wiring plate can be simply processed by a simple process such as protruding ribs.
In this case, since the same connection fitting can be mass-processed as a single component, the cost can be reduced as compared with the case where a large number of fitting means are integrally formed on the wiring plate.

According to the fourth aspect of the present invention, since the LED can be replaced in units of the holder, it can be easily attached to and detached from the wiring plate, and can be easily handled.

According to the invention of claim 5, a four-legged LED
Can be easily and reliably connected to the wiring plate using two connection fittings.

According to the sixth aspect of the present invention, since the directional directions of the LEDs in the state where the wiring plate is curved are aligned,
Light from the ED can be irradiated in a certain direction.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view showing an assembled state of the embodiment of the present invention.

3A and 3B are views showing a conventional LED fixing structure, in which FIG. 3A is an overall view and FIG. 3B is an enlarged view of a main part thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Ladder-shaped assembly 11 LED 12 Lead 15 Wiring plate 16 Rib 20 Connection fitting 22 Rib fitting part 23 Lead fitting part 30 Holder

Continued on the front page (72) Inventor Katsuhiro Murahashi 80 Itado, Isehara-shi, Kanagawa F-term in Isehara Industrial Co., Ltd. Isehara Works (reference) 3K080 AA01 AB16 AB17 BA04 BA07 BE05 BE11 CA08 CC06 CC12

Claims (6)

[Claims] 1. A method according to claim 1, further comprising: arranging two bendable wiring members in parallel with each other; arranging a plurality of LEDs in a longitudinal direction of the wiring member; LE of a vehicle lamp characterized in that it is coupled to one and the other of two wiring members via a detachable fitting means, thereby forming a ladder-like assembly.
D fixed structure. 2. The LED fixing structure for a vehicle lamp according to claim 1, wherein two strip-shaped wiring plates arranged in parallel to each other with a wide surface facing in the same direction are used as said wiring members. An LED fixing structure for a vehicular lamp. 3. The LED fixing structure for a vehicle lighting device according to claim 2, wherein connection fittings are respectively arranged between each of said wiring plates and a lead of an LED to be coupled thereto, and said connection fitting is provided on each of said connection fittings. An LED fixing structure for a vehicle lighting device, wherein a lead fitting portion for inserting and connecting an LED lead and a rib fitting portion for inserting and connecting a rib formed upright on the wiring plate are formed as fitting means. . 4. The LED fixing structure for a vehicle lamp according to claim 3, wherein a set of connection fittings arranged for each of said wiring plates for one LED is accommodated in one holder, and said holder is provided. Characterized by being held by ribs provided on the two wiring plates. 5. The vehicle lighting device according to claim 3 or 4, wherein
An ED fixing structure, wherein the LED is a four-leg type having two pairs of leads, and each of the connection fittings is provided with two lead fitting portions for fitting two leads. An LED fixing structure for a vehicular lamp. 6. The LED fixing structure for a vehicle lamp according to claim 3, wherein the direction of the LED is adjusted by aligning the protruding directions of the ribs in a state where the wiring plate is curved. An LED fixing structure for a vehicular lamp, wherein the directions are uniformly arranged.