JP2003243721A - Light emitting diode fixing structure - Google Patents

Abstract

(57) [Problem] To provide a light emitting diode fixing structure capable of improving work efficiency. SOLUTION: Since a lower end portion 5 of a lead leg 6 of each light emitting diode 2 can be pressed down by using a metal plate wiring 10, a special operation such as conventional soldering is not required, and the light emitting diode 2 can be used. The fixing work efficiency can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting diode fixing structure, and more particularly to a light emitting diode fixing structure suitable for a vehicle lamp device.

[0002]

2. Description of the Related Art As a light emitting diode used in a vehicle lamp or the like, generally, a lead leg formed from the lower surface of the body of the light emitting diode is soldered to a metal plate wiring previously attached to the lamp housing. It is fixed by attachment. Then, by fixing a plurality of light emitting diodes along the arrangement direction, the light emitting diodes are arranged in a plane and are configured to be lit as a lamp.

[0003]

However, in such a conventional technique, the lead legs of a plurality of light emitting diodes are attached to the metal plate wiring of the housing by soldering at one place at a time. The work is troublesome and is disadvantageous in terms of work efficiency.

The present invention has been made in view of such a conventional technique, and provides a fixing structure of a light emitting diode capable of improving working efficiency.

[0005]

The invention according to claim 1 is
A plurality of light emitting diodes are arranged along the arrangement direction with the lower ends of the lead legs formed on the lower surface of the body of the light emitting diode bent in directions away from each other and the lower end placed on a resin housing. Then, the metal plate wiring extending along the arrangement direction of the light emitting diodes was attached to the housing from above the lower end portion of the lead leg, and the lower end portion of the lead leg was sandwiched between the housing and the metal plate wiring.

According to the first aspect of the present invention, the lower end portion of the lead leg of each light emitting diode can be pressed down by using the metal plate wiring that must be originally attached to the housing. Unlike the soldering work, the work of specially attaching the lead leg to the metal plate is unnecessary, and the work efficiency of fixing the light emitting diode can be improved.

According to the second aspect of the invention, the metal plate wiring is formed with the spring portion elastically contacting the lower end portion of the lead leg.

According to the second aspect of the present invention, since the spring portion elastically contacting the lower end portion of the lead leg is formed in the metal plate wiring, the lead leg can be pressed by a predetermined elastic force and the electrical connection with the lead leg can be achieved. Connection is also secure.

According to a third aspect of the present invention, the spring portion is formed by partially cutting and raising the metal plate wiring.

According to the third aspect of the invention, the spring portion can be easily formed by cutting and raising a part of the metal plate wiring.

According to a fourth aspect of the present invention, a recess is formed in the housing to accommodate the lower end of the lead leg.

According to the fourth aspect of the present invention, since the recess for accommodating the lower end of the lead leg is formed in the housing, the positional deviation of the light emitting diode can be prevented more reliably.

According to the fifth aspect of the present invention, the groove portion for accommodating the metal plate wiring is formed in the housing.

According to the fifth aspect of the present invention, since the groove for accommodating the metal plate wiring is formed in the housing, the displacement of the metal plate wiring can be prevented.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to FIGS. In this embodiment,
The case of a stop lamp of an automobile will be described as an example. Reference numeral 1 in FIG. 1 indicates a resin housing provided inside the lens of the stop lamp. Although FIG. 1 shows only a portion where one light emitting diode 2 is fixed in an enlarged manner, in reality, a large number of light emitting diodes 2 are arranged in a plane. A large number of light emitting diodes 2 are arranged in a plane while being arranged in a line in a certain arrangement direction S.

The light emitting diode 2 used in this embodiment has a dome type light emitting portion 4 on the upper surface of a flat box type main body 3, and the lower end portions 5 are separated from each other from the lower surface of the main body 3. A pair of bent L-shaped lead legs 6 are formed. The lower end portion 5 of the lead leg 6 has a large triangular shape in order to enhance heat dissipation.

On the upper surface of the housing 1, two groove portions 7 having a width corresponding to the lower end portion 5 of the lead leg 6 are formed in parallel along the arrangement direction S of the light emitting diodes 2. And
At a position corresponding to one light emitting diode 2, a rectangular recess 8 for accommodating the lower end portion 5 of the lead leg 6 is formed in the groove portion 7. Inner walls of four sides of the recess 8 are in contact with the lower end portion 5 to prevent the lower end portion 5 from being displaced in the horizontal direction.
Further, pins 9 are integrally formed at both sides of each recess 8 in the arrangement direction S so as to project.

On the upper side of the housing 1, a recess 8 is formed.
With the lower end 5 of the lead leg 6 accommodated therein, the metal plate wiring 10 is attached from above the lower end 5. In this metal plate wiring 10, a spring portion 11 is formed in a portion corresponding to the lower end portion 5 of the lead leg 6, and holes 12 corresponding to the pins 9 are formed on both sides thereof.

The spring portion 11 is formed by cutting and raising parts of the metal plate wirings 10 facing each other in a strip shape, leaving one end side in the arrangement direction S, and having a shape repeatedly bent in the arrangement direction S. is doing. Therefore, the spring portion 11
The lower end of the is the metal plate wiring 1 before installation.
It is located below the general part of 0 and can be elastically deformed up and down by using the left end as a hinge.

The metal plate wiring 10 is attached by pressing the metal plate wiring 10 into the groove portion 7 and crushing the pins 9 protruding from the holes 12 with heat. By fixing the pin 9 by crushing it with heat and fitting it into the groove portion 7, the displacement of the metal plate wiring 10 can be surely prevented. By mounting the metal plate wiring 10 in this manner, the lower end portion 5 of the lead leg 6 is fixed while being sandwiched between the metal plate wiring 10 and the housing 1.

That is, the lower end portion 5 of the lead leg 6 housed in the recess 8 is firmly restrained by the portion other than the spring portion 11 of the metal plate wiring 10 to prevent the light emitting diode 2 from floating and to prevent the spring. By elastically contacting the portion 11 with a predetermined elastic force, the reliability of the electrical connection between the lead leg 6 and the metal plate wiring 10 can be ensured.

As described above, since the lower end portion 5 of the lead leg 6 of the light emitting diode 2 can be pressed down by the metal plate wiring 10 originally attached to the housing 1, the work of fixing the light emitting diode 2 is facilitated. Become.

In the above embodiment, the pin 9 on the housing 1 side and the hole 12 on the metal plate wiring 10 side are caulked and attached by heat. However, the present invention is not limited to this. Alternatively, the diameter of the hole 12 may be slightly reduced, and the hole 12 may be press-fitted into the pin 9. Also,
The mounting method by the pin 9 and the hole 12 is not limited, and hook means that engages the metal plate wiring 10 by simply pressing the metal plate wiring 10 is provided on the housing 1 side, or the metal plate wiring 10 is a separate clip. The structure may be such that it is attached to the housing 1 by inserting means.

In addition, the spring portion 11 formed on the metal plate wiring 10 is not limited to that of the embodiment, and any method may be used as long as it can contact the lower end portion 5 of the lead leg 6 with a predetermined elastic force. Any shape may be adopted.

[0025]

According to the present invention, the lower end portion of the lead leg of each light emitting diode can be pressed down by utilizing the metal plate wiring which is originally required to be attached to the housing. There is no need to specially attach the lead leg to the metal plate as in the attaching work, and the work efficiency of fixing the light emitting diode can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a fixing structure of a light emitting diode according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a light emitting diode is fixed.

FIG. 3 is a cross-sectional view taken along the line SA-SA shown in FIG.

[Explanation of symbols]

1 housing 2 Light emitting diode 3 body 4 Light emitting part 5 Lower end 6 lead legs 7 groove 8 recess 9 pin 10 Metal plate wiring 11 Spring part 12 holes S array direction

Claims (5)

[Claims] 1. A plurality of light emitting diodes are arranged with the lower ends of lead legs formed on the lower surface of the body of the light emitting diode bent in directions away from each other and the lower end placed on a resin housing. Install the metal plate wiring that is arranged along the direction and extends along the arrangement direction of the light emitting diodes from above the lower end of the lead leg to the housing, and place the lower end of the lead leg between the housing and the metal plate wiring. A structure for fixing a light emitting diode characterized by being sandwiched. 2. The light emitting diode fixing structure according to claim 1, wherein the metal plate wiring is provided with a spring portion elastically contacting a lower end portion of the lead leg. 3. The light emitting diode fixing structure according to claim 2, wherein the spring portion is formed by partially cutting and raising the metal plate wiring. 4. The light emitting diode fixing structure according to claim 1, wherein the housing is provided with a recess for accommodating a lower end portion of the lead leg. Construction. 5. The light emitting diode fixing structure according to claim 1, wherein a groove for accommodating the metal plate wiring is formed in the housing.