JP2000269554A - Light emitting diode lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lamp which can stably stand alone, without being inclined to any of backward, forward direction, right, or left direction orthogonally crossing the direction with respect to a substrate on which this LED lamps is loaded. SOLUTION: An LED chip is housed inside a light transmitting resin mold part 2, and electrically connected with lead terminals 3 and 4. The lead terminal 3 is provided with stoppers 3p and 3q, and the lead terminal 4 is provided with stoppers 4p and 4q. The lead terminals 3 and 4 are inserted into insertion ports 6 and 7 formed at a printed circuit board 5, and an LED lamp 1 can be loaded on a printed circuit board 5. The LED lamp 1 is supported at two points by the lead terminals 3 and 4 with respect to the inclination in the arrow X-direction, and supported at two points by the stoppers of each lead terminal with respect to the inclination in the arrow Y-direction. Thus, a suppressing force acts with respect to inclination in any direction, and the LED lamp 1 can stably stand alone on the printed circuit board.

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 lamp having a structure capable of stably standing independently of a board on which it is mounted, without tilting in any of a front-rear direction and a right-left direction perpendicular thereto.

[0002]

2. Description of the Related Art It is known to form a variety of display devices by mounting a light emitting diode lamp (hereinafter abbreviated as an LED lamp) independently on a printed circuit board without using a fixture. When the display device is formed by independently mounting the LED lamp on the printed circuit board as described above, an inclination preventing means is provided to prevent the display from being disturbed and to make the display easy to see. Must not be mounted on

FIG. 9 is a schematic perspective view showing an example in which a stopper is provided on a lead terminal in order to make an LED lamp stand upright on a printed circuit board and become independent. In FIG. 9, a translucent resin mold section 2 seals an LED chip, and the LED chip is electrically connected to lead terminals 3 and 4. The tip of the transparent resin mold part 2 is
A lens is formed to protrude in the form of a lens, and the output light of the LED chip is condensed and emitted forward.

[0004] Reference numeral 2a denotes a light-transmissive resin mold portion which is formed in a disk shape in connection with the translucent resin mold portion 2.
The pair of lead terminals 3 and 4 are formed of an opaque resin mold portion 2.
a, and is linearly suspended from the printed circuit board 5 on which the LED lamp 20 is mounted.

[0005] The lead terminal 3 is provided with stoppers 3a and 3b which protrude to the left and right sides from the hanging linear portion. Similarly, stoppers 4a, 4b
Is provided. Stoppers 3a, 3b and stopper 4
a and 4b are the same height as the lead terminals 3 and 4,
When viewed in the direction, they are provided so as to be aligned. That is, as viewed from the direction in which the pair of hanging lead terminals 3 and 4 are arranged in parallel with each other, each stopper is formed to protrude from the left and right sides of the pair of lead terminals 3 and 4.

When viewed in the direction of arrow B in which the pair of lead terminals 3 and 4 are arranged so as to overlap with each other, the stoppers 3a and 3b and the stoppers 4a and 4b are provided such that their end faces overlap. Have been. That is, the LED lamp 2
When 0 is viewed from one direction, the protruding portions of the stoppers of the lead terminals 3 and 4 are linearly arranged. When the LED lamp 20 is viewed from a direction orthogonal to this, each of the lead terminals 3 and 4 The end faces of the projecting portions of the formed stoppers are arranged so as to overlap.

Such a stopper is prepared by preparing a frame having a structure in which a large number of lead terminals are connected by tie bars at the time of manufacturing an LED lamp, and connecting the tie bars to a predetermined length from the lead terminals. Can be formed by using the uncut portion of the tie bar after cutting at the position shown in FIG. In the printed circuit board 5, insertion openings 6, 7 for lead terminals 3, 4 are formed in a rectangular shape.

FIG. 10 is a front view of the state where the LED lamp 20 is mounted on the printed circuit board 5 as viewed from the direction of arrow A in FIG. As for the size of the rectangular insertion ports 6 and 7, the short side is
Are slightly longer than the width of the stopper terminal, and the longer sides are shorter than the width of the stopper. Therefore, the LED lamp 2
0 is mounted on the printed circuit board 5, the lead terminals 3,
The LED lamp 20 is allowed to stand on the printed circuit board 5 at the position of the stopper by passing the tip of the LED 4 through the insertion ports 6 and 7.

The leading ends of the lead terminals 3 and 4 that have passed through the insertion ports 6 and 7 of the printed circuit board 5 form retaining portions 3c and 4c, respectively, and are made of conductive material such as copper foil provided on the back surface of the printed circuit board 5. Part and soldered. The left and right stoppers 3a, 3b provided on the lead terminal 3 are in contact with the surface of the printed circuit board 5, and the left and right stoppers 4 provided on the lead terminal 4.
a, 4b contact the surface of the printed circuit board 5 and
The lamp 20 is made independent on the printed circuit board 5.

As shown in FIG. 10, each of the lead terminals 3, 4
The distal ends of the stoppers formed at the outer sides of the long sides of the rectangular insertion ports 6 and 7 are arranged. That is, the lead terminals 3 and 4 are connected to the stoppers 3a, 3a, respectively.
b and the stoppers 4a and 4b are supported on both sides of the insertion ports 6 and 7 formed in the printed circuit board 5. Therefore, the lead terminals 3, 4 are not provided with the stoppers 3a, 4a or the stoppers 3b,
4b, two-point support is used, so that a deterrent acts, and the LED lamp 20 can be stably self-supported on the printed circuit board 5.

FIG. 11 is a side view showing a state in which the LED lamp 20 is mounted on the printed circuit board 5 as viewed in the direction of arrow B in FIG. 9, ie, the direction in which the pair of lead terminals 3 and 4 are arranged so as to overlap each other. FIG. When the lead terminal 3 and the lead terminal 4 are inserted into the insertion openings 6 and 7 of the printed circuit board 5 when viewed from the direction of arrow B in FIG. 9, the stopper of each lead terminal is linear. Are arranged to overlap. For this reason, the stopper provided at each lead terminal is viewed from the arrow Y in FIG.
Since the deterrent does not act on the inclination in the direction, the LED lamp 20 may be mounted on the printed circuit board 5 with an inclination. The dashed line in FIG. 11 virtually shows a state where the LED lamp 20 is normally mounted on the printed circuit board 5.

[0012]

As described above, the conventional LED lamp with a stopper as shown in FIG. 9 is stable and independent on the printed circuit board when viewed in the front-rear direction. When viewed in the left-right direction perpendicular to the direction, there were cases where the device was mounted in an inclined state. Thus, L
If the ED lamp is mounted on a printed circuit board in a tilted state, display unevenness will occur on a display device using the LED lamp. There was a problem of increasing.

In view of the above problems, the present invention provides a light emitting diode lamp having a configuration in which it can be stably self-supported without tilting in any of the front-rear direction and the right-left direction perpendicular to the mounted substrate. The purpose is to provide.

[0014]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a light-emitting diode lamp, a light-transmitting resin mold portion for sealing a light-emitting diode (LED) chip, and an electric connection with the LED chip. A pair of lead terminals which are connected and drawn out of the translucent resin mold portion in parallel, and provided with a stopper on the tip end side, and wherein the pair of lead terminals are inserted into an insertion opening formed in the substrate. Is inserted to the position of the stopper, and in the LED lamp mounted independently on the substrate, as viewed from the direction in which the pair of lead terminals are arranged so as to overlap each other,
This is attained by a configuration in which the stopper protrudes from the left and right sides of the lead terminal.

According to the above-mentioned feature of the present invention, the stopper provided on the pair of lead terminals of the LED lamp is provided on the left and right sides of the lead terminals when viewed from the direction in which the pair of lead terminals are arranged to overlap each other. It is formed to protrude on both sides.
For this reason, when mounting the LED lamp on the printed circuit board, the deterrent acts on the tilt from both the front-back direction and the left-right direction perpendicular to the direction, and the LED lamp is stably self-supported on the printed circuit board. Can be done.
Therefore, the work of correcting the inclined LED lamp so as to stand upright becomes unnecessary, and the work load is reduced.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view of an LED lamp according to an embodiment of the present invention, FIG. 2 is a front view as viewed from a direction A in FIG. 1, and FIG. 3 is a side view as viewed from a direction B in FIG. FIG. Parts that are the same as or correspond to those in FIG. 9 are denoted by the same reference numerals. In the example of FIG.
In a pair of lead terminals provided on the ED lamp 1,
One of the lead terminals 3 is provided with stoppers 3p and 3q which protrude from the straight portion in a direction parallel to the direction of arrow A.

Also, the other lead terminal 4 is provided with stoppers 4p and 4q projecting in a direction parallel to the direction of arrow A. Thus, in the LED 1 of the present invention, the leakage
Stoppers 3p and 3q provided on the lead terminal 3 and a lead terminal 4
The end faces of the stoppers 4p and 4q are arranged in two rows in parallel when viewed in the direction of arrow A. When viewed in the direction of arrow B in which the lead terminals 3 and 4 are arranged so as to overlap with each other, the stopper provided on the lead terminal 3 and the stopper provided on the lead terminal 4 are different. , Protruding from the straight portion to the left and right sides.

The printed circuit board 5 has insertion ports 6 and 7 for inserting the lead terminals 3 and 4. This insertion slot 6, 7
Is formed in a rectangular shape such that the direction in which the stoppers provided on the lead terminals 3 and 4 protrude is a long side. For this reason, as shown in FIG. 3, the stopper formed on the lead terminal 4 is placed on the printed circuit board 5 along the long side of the rectangular insertion opening 7 when viewed from the direction of arrow B as shown in FIG. Will be placed. Similarly, in the state viewed from the arrow B direction,
The stopper formed on the lead terminal 3 is arranged on the printed circuit board 5 along the long side of the rectangular insertion opening 6.

That is, when the lead terminals 3 and 4 are inserted into the insertion ports 6 and 7 of the printed circuit board 5, the stoppers 3p and 3q and the tip positions of the stoppers 4p and 4q become
The LED lamp 1 is supported by being arranged on both sides of the outer periphery of the long side of the insertion ports 6 and 7. Therefore, the lead terminals 3 and 4 are configured to support the stoppers 3p and 4p or the stoppers 3q and 4q at two points with respect to the inclination in the arrow Y direction (front-back direction) in FIG. A deterrent acts on the inclination of the LED lamp 1 so that the LED lamp 1 can be stably mounted on the printed circuit board 5 by itself.

As shown in FIG. 2, when viewed from the direction of arrow A, the LED lamp 1 is supported on the printed board 5 at two places by the lead terminals 3 and 4. Therefore, the LED lamp 1 has a configuration in which the lead terminals 3 and 4 are supported at two points with respect to the inclination in the X direction (left and right directions) perpendicular to the Y direction in FIG. The deterrent to the inclination acts, and the LED lamp 1 can be stably mounted independently on the printed circuit board 5.

As described above, in the example of FIG. 1, a stopper is formed by a portion of the pair of lead terminals 3, 4 projecting to the left and right sides from the linear portion.
The stopper provided on the lead terminal 4 is arranged such that, when the LED lamp 1 is viewed from one direction, portions projecting to the left and right sides from the linear portion of the lead terminal overlap each other. Further, when the LED lamp 1 is viewed from a direction orthogonal to this, the end faces of the protruding portions of the stoppers formed on the respective lead terminals 3 and 4 are arranged in parallel so that the end faces are two rows.

That is, when viewed from the direction of arrow B (the direction in which the pair of lead terminals 3 and 4 are arranged so as to overlap),
Since the stoppers are provided so as to protrude on both right and left sides of the lead terminal, when mounting the LED lamp 1 on the printed circuit board 5, the LED lamp 1 can be tilted in either the front-rear direction or the left-right direction perpendicular to the same. Even deterrence works.
Therefore, the LED lamp 1 can be stably mounted on the printed circuit board 5 independently.

FIG. 4 is a schematic perspective view showing an LED lamp according to another embodiment of the present invention, and FIG.
FIG. 6 is a schematic front view showing an example of manufacturing the ED lamp, FIG. 6 is a front view seen from the direction of arrow A in FIG. 4, and FIG. 7 is a side view seen from the direction of arrow B in FIG. In the example of FIG. 4, the lead terminals 3 and 4 hang down from the LED lamp 10 in a straight line in parallel.
Lead terminals 3 are provided with stoppers 3 curved to the left and right sides.
u, 3v are provided. The lead terminal 4 is provided with stoppers 4u and 4v which are curved on both left and right sides. In this case, the long sides of the rectangular insertion ports 6 and 7 formed in the printed circuit board 5 may be set in any direction of arrows A and B.

Also in the example of FIG. 4, when viewed from the direction of arrow A, as shown in FIG. 6, the end faces of the protruding portions of the stoppers formed on the lead terminals 3 and 4 are arranged in two rows. They are arranged in parallel. When viewed in the direction of arrow B perpendicular to the direction of arrow A (the direction in which the pair of lead terminals 3 and 4 are arranged so as to overlap), a stopper is formed from the linear portion of each of the lead terminals 3 and 4. It protrudes on both sides. For this reason, LE
When the D lamp 20 is mounted on the printed circuit board 5, a deterrent acts on the tilt from any of the front-rear direction and the left-right direction orthogonal to the direction, and the LED lamp 1 is stably mounted on the printed circuit board 5. It can be mounted independently.

FIG. 5 is a perspective view of a conventional LED lamp stopper described with reference to FIG. 8, which is formed by processing the stopper of the conventional LED lamp and bending the lead terminals 3, 4 as shown in FIG. This is for explaining an example of forming.

In FIG. 5, a torsional force is applied to the stopper 3a in the counterclockwise direction (X direction as viewed from the arrow) about the straight portion of the lead terminal 3. Further, with the straight portion of the lead terminal 3 as a center, the stopper 3b is rotated counterclockwise (in the direction of arrow X).
Direction). Similarly, a torsional force is applied to the stoppers 4a and 4b in the counterclockwise direction (X direction as viewed from the arrow) about the straight portion of the lead terminal 4.

Since the lead terminals 3 and 4 are formed of a flexible conductive material, it is possible to deform the shape by applying a torsional force. In this way, the stopper formed at the portion protruding from the straight portion to the left and right sides as shown in FIG. 8 can be bent to form the stopper as shown in FIG.

As described above, the improved LED lamp as shown in FIG. 4 can be formed by using the existing LED lamp with the stopper, so that the existing LED lamp is not inclined with respect to the printed circuit board. Stable mounting is possible, and effective use of existing LED lamps with stoppers can be achieved.

The LED lamp having a curved stopper as described with reference to FIG. 4 is formed by forming the above-described frame using an appropriate mold and cutting the frame at a predetermined position. Can be manufactured. The printed circuit board 5 has a rectangular insertion opening having a short side and a long side for inserting a lead terminal. The shape of the insertion opening is the tip of the lead terminal. May be square if it is large enough to pass through.

FIG. 8 is a schematic perspective view showing an LED lamp according to still another embodiment of the present invention. In this example, of the pair of lead terminals 3 and 4 provided on the LED lamp 1, one of the lead terminals 3 has a stopper 3r projecting from a straight line portion in one direction parallel to the direction of arrow A. Provided. The other lead terminal 4 is provided with a stopper 4s projecting in the opposite direction parallel to the arrow A direction.

In the example of FIG. 8 as well, a stopper 3r provided on the lead terminal 3 and a stopper 4s provided on the lead terminal 4
Means that the end faces of the stoppers are arranged in two rows in parallel when viewed in the direction of arrow A. When viewed in the direction of arrow B in which the lead terminals 3 and 4 are arranged so as to overlap with each other, a stopper 3r provided on the lead terminal 3 and a stopper 4s provided on the lead terminal 4 are provided. Is formed so as to protrude from the straight portion of the lead terminal to both left and right sides.

As described above, in the present invention, the LED lamp is provided with a pair of lead terminals, and a stopper protruding from one of the lead terminals in one direction and an opposite direction from the other lead terminal. Even with the protruding stopper, a configuration can be achieved in which the board can be stably self-supported without tilting in any of the front-rear direction and the left-right direction perpendicular to the mounted board.

The present invention is applied to an LED lamp such as a dot matrix display which performs a multi-color display by mounting a large number of LED lamps on a printed circuit board.

[0034]

As described above, according to the present invention, the stopper provided at the pair of lead terminals of the LED lamp is provided with the stopper of the lead terminals when viewed from the direction in which the pair of lead terminals are arranged to overlap. It is formed so as to protrude on both left and right sides. For this reason, when mounting the LED lamp on a printed circuit board,
The restraining force acts on the tilt from any of the front-rear direction and the left-right direction perpendicular to the direction, and the LED lamp can be stably self-supported on the printed circuit board. Therefore, the work of correcting the inclined LED lamp so as to stand upright becomes unnecessary, and the work load is reduced.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an LED lamp according to an embodiment of the present invention.

FIG. 2 is a front view as seen from the direction of arrow A in FIG. 1;

FIG. 3 is a side view as seen from the direction of arrow B in FIG. 1;

FIG. 4 is a schematic perspective view of an LED lamp according to another embodiment of the present invention.

FIG. 5 is a schematic perspective view illustrating an example of forming the LED lamp of FIG. 4;

FIG. 6 is a front view as seen from the direction of arrow A in FIG. 4;

FIG. 7 is a side view as seen from the direction of arrow B in FIG. 4;

FIG. 8 is a schematic perspective view of an LED lamp according to another embodiment of the present invention.

FIG. 9 is a schematic perspective view of a conventional LED lamp.

FIG. 10 is a front view as seen from the direction of arrow A in FIG. 8;

FIG. 11 is a side view as seen from the direction of arrow B in FIG. 8;

[Explanation of symbols]

 1, 10, 20 Light-emitting diode (LED) lamp 2 Translucent resin molded part 3 Lead terminal 3p, 3q, 3r Stopper 4 Lead terminal 4p, 4q, 4s Stopper 5 Printed circuit board 6, 7 Insertion slot

Claims (1)

[Claims] 1. A light-transmitting resin mold portion for sealing a light emitting diode (LED) chip, and electrically connected to the LED chip and drawn out of the light-transmitting resin mold portion in parallel. A pair of lead terminals provided with a stopper on the distal end side, and the pair of lead terminals is inserted into an insertion opening formed in the substrate to the position of the stopper, and is mounted on the substrate by itself. A light-emitting diode lamp, wherein the stopper is formed to protrude from both sides of the lead terminal when viewed from a direction in which the pair of lead terminals are arranged so as to overlap with each other.