JPH05129661A - Light emitting diode lamp - Google Patents

Abstract

(57) [Summary] [Object] To provide a light emitting diode lamp capable of improving workability in a manufacturing process and a mounting process. [Configuration] The light emitting diode lamp is a light emitting diode 1
0, and a substrate 30 on the surface of which light emitting diodes 10 are arranged
And a pin 40 for external connection, and a lamp case 50 accommodating the light emitting diode 10 and the substrate 30. The pin 40 is attached to the substrate 30 before the light emitting diode 10 is mounted on the substrate 30, and is drawn out into a cylindrical portion 52 formed on the back surface of the lamp case 50. The shape / arrangement of the pins 40 matches the shape / arrangement of the pin holes of the connector, and moreover, the cylindrical portion 52 on the rear surface of the lamp case 50.
Are formed so that the connector can be fitted thereto.

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 mainly used as a light source for a dial or the like provided outdoors.

[0002]

2. Description of the Related Art FIG. 9 is a schematic sectional view of a conventional light emitting diode lamp. The light emitting diode lamp shown in FIG.
It has a reflection type light emitting diode 110, a substrate 120, a connection line 130 for external connection, a lamp case 140, and a black resin 150.

The light emitting diode 110 is mounted by soldering or the like on a substrate 120 having a circuit pattern formed on its surface. From the back surface of the substrate 120, a long connecting line 130 for external connection, which will be connected to a control circuit later, is drawn out.
The lamp case 140 accommodates the substrate 120 to which the light emitting diode 110 is attached. A screw (not shown) is cut on the outer circumference of a cylindrical portion 142 formed on the back surface of the lamp case 140, and the lamp case 140 can be attached to a light emitting diode lamp mounting board (not shown) by tightening and tightening a nut. it can. In addition, a groove 144 into which a waterproof O-ring is fitted is formed on the back surface of the lamp case 140. The light emitting diode 110 and the substrate 120 have a radiation surface of the light emitting diode 110 in order to improve rust prevention and waterproofness in the light emitting diode lamp and to improve the contrast between when the light emitting diode lamp is turned on and when it is turned off. It is sealed with a black resin 150 so as not to be buried.

[0004]

However, since the connecting line 130 for external connection is connected to the substrate 120 at the initial stage of the manufacturing process of the light emitting diode lamp, various processes are required in the process of manufacturing the light emitting diode lamp. Work difficulty occurs.

Specifically, first, the light emitting diode 110
When pulling out the connection line 130 for external connection from the substrate 120 on which the board is mounted, the connection line 130 for external connection is connected to the substrate 1
Although it is soldered to 20, it is necessary to solder in the gaps of the light emitting diodes 110 that are densely mounted, which causes a problem that it takes time. Further, when the aging check is performed after the light emitting diode 110 and the connection line 130 for external connection are attached to the substrate 120, it is necessary to connect the connection line 130 for external connection to each power supply terminal for aging check. This makes the work complicated. When attaching the substrate 120 to the lamp case 140, the lamp case 1
A long connecting wire 1 for external connection to the cylindrical portion 142 on the back surface of the 40.
It is necessary to pass through 30, which is troublesome. In addition, when the resin is injected, the connection line 130 for external connection becomes an obstacle, and when the resin is cured, the connection line 130 for external connection is exposed, so that an extra space is required. The number of light-emitting diode lamps that can be put in the furnace at one time is reduced, which deteriorates mass productivity. When fitting the O-ring into the groove 144, the O-ring must be fitted into the back surface of the lamp case 140 after passing through the connecting wire 130 for external connection, which is troublesome. When the light emitting diode lamps are densely arranged on the light emitting diode lamp mounting board, the connection line 130 for external connection of the light emitting diode lamps is provided.
There is a problem that the wiring work becomes complicated because they are entangled with each other. Further, when the light emitting diode lamp is mounted on the light emitting diode lamp mounting board, there is a problem that the nut tightening work is complicated because of the long connecting wire 130 for external connection.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a light emitting diode lamp capable of improving workability in the manufacturing process and the mounting process.

[0007]

SUMMARY OF THE INVENTION To achieve the above object, the present invention is a light emitting diode lamp in which a substrate having a plurality of light emitting diodes arranged on the front surface is housed in a lamp case, and is externally connected to the back surface of the substrate. It is characterized in that a pin for use is provided.

Further, it is desirable that the shape and arrangement of the pins are matched with the shape and arrangement of the pin holes of the connector, and that the rear surface of the lamp case is provided with a connecting means into which the connector can be fitted.

Further, it is desirable to provide a supporting means for supporting the pins at a predetermined interval.

[0010]

According to the present invention, by providing the pins for external connection on the back surface of the substrate with the above-described structure, the connection lines for external connection and the pins are connected to each other by mounting the light emitting diode lamp on the light emitting diode mounting board. It can be done later. Therefore, in the manufacturing process of the light emitting diode lamp and the mounting process thereof, the connection line for external connection does not get in the way as in the conventional case, so that workability can be improved.

Further, the shape and arrangement of the pins are matched with the shape and arrangement of the pin holes of the connector, and the rear surface of the lamp case is provided with connecting means to which the connector can be fitted.
By simply fitting the connector, the connection line for external connection and the pin can be easily connected.

Further, by providing a supporting means for supporting the pins at a predetermined interval, the displacement of the pins can be prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view of a light emitting diode lamp which is an embodiment of the present invention, and FIG. 2 is a schematic sectional view of a light emitting diode used in the light emitting diode lamp. The light emitting diode lamp shown in FIG. 1 includes a light emitting diode 10, a substrate 30, pins 40, and a lamp case 50.
And a black resin 60.

A large number of holes for mounting the light emitting diodes 10 are formed on the substrate 30, and a circuit pattern is printed on the surface. The lamp case 50 accommodates the substrate 30 to which the light emitting diode 10 is attached. A screw (not shown) is cut on the outer circumference of a cylindrical portion 52 formed on the back surface of the lamp case 50, and the lamp case 50 can be attached to a light emitting diode lamp mounting board described later by fitting and tightening a nut. Further, on the back surface of the lamp case 50, a groove 54 into which a waterproof O-ring is fitted is formed.

The pin 40 serves as an external terminal connected to a connection line for external connection, and is mounted on the substrate 30 by soldering or the like before mounting the light emitting diode 10 on the substrate 30. There is. Pin 40 is substrate 30
It is provided on the back surface of and is extended to the inside of the cylindrical portion 52. In the present embodiment, since the connecting wire for external connection and the pin 40 are connected via the connector, the shape and arrangement of the pin 40 are matched with the shape and arrangement of the pin holes of the ready-made connector, and the lamp is The shape of the cylindrical portion 52 on the back surface of the case 50 is formed so that the connector can be fitted thereto.

As shown in FIG. 2, the light emitting diode 10 includes a light emitting element 12, leads 14a and 14b, a wire 16, a light transmissive material 18, a concave reflection surface 22, and a radiation surface 24. It is a waste. The light emitting element 12 is mounted on one of the leads 14a, and is electrically connected to the other lead 14b by a wire 16. In addition, the light emitting element 12, the tips of the leads 14a and 14b, and the wire 1
6 is integrally sealed by a light transmissive material 18.
The concave reflecting surface 22 is provided on the side facing the light emitting surface of the light emitting element 12.
Is formed, and the flat emission surface 2 is formed on the back side of the light emitting element 12.
4 are formed. The concave reflection surface 22 is obtained by performing mirror finishing on one surface of the light transmissive material 18 by plating, metal deposition, or the like, and the two leads 14 are used for mirror finishing.
In order to prevent a short circuit between a and 14b, leads 14a and 1
4b is insulated.

The light emitting diode 1 constructed as described above.
At 0, when power is supplied to the light emitting element 12, the light emitting element 12 emits light, and the light emitted by the light emitting element 12 is reflected by the concave reflecting surface 22 and emitted from the emitting surface 24 to the outside. In this way, the light emitted from the light emitting element is once reflected by the concave reflecting surface and then emitted to the outside, whereby substantially the entire luminous flux of the light emitted from the light emitting element can be emitted forward.

In order to form a light emitting diode lamp using the light emitting diode 10, first, the leads 14a, 1 are formed.
By bending 4b and inserting it into the hole formed in the substrate 30, the light emitting diodes 10 are arranged at predetermined positions on the substrate 30, for example, three vertically and horizontally. Next, lead 1
After connecting 4a and 14b to the circuit pattern formed on the substrate 30 by soldering or the like, the substrate 30 is housed in the lamp case 50. Then, in order to improve rust prevention and waterproofness inside the light emitting diode lamp, the light emitting diode 10 and the substrate 30 are sealed with a black resin (for example, epoxy resin) 60 so that the radiation surface 24 of the light emitting diode 10 is not filled. .. By using the black resin 60, it is possible to improve the contrast between when the light emitting diode lamp is turned on and when it is turned off.

Incidentally, here, as shown in FIG.
In order to prevent the positional deviation of the support tool 42a, holes 42 are formed at predetermined pin arrangement intervals, and the support tool 42a may be inserted and fixed in the cylindrical portion 52 by passing the pin 40 through the holes. .. Further, as shown in FIG. 4, a support tool 42b having a tapered hole may be used. Thereby, even if the pin position is slightly deviated, the pin position can be easily corrected simply by inserting the support tool 42b.

In order to mount the light emitting diode lamp thus constructed on the light emitting diode lamp mounting board, as shown in FIG. 5, first, the groove 5 of the lamp case 50 is mounted.
After fitting the O-ring 56 in 4, the light emitting diode lamp is inserted into the hole formed in the light emitting diode lamp mounting board 90, and the cylindrical portion 52 is inserted. Then, the nut 80 is attached to the cylindrical portion 52 and tightened to attach the lamp case 50 to the light emitting diode lamp attachment board 90. After that, the pin 40 and the connection line 72 for external connection are connected via the connector 70a, and the connection line 72 is connected to a control circuit (not shown).

In the light emitting diode lamp of this embodiment, instead of directly connecting the connecting line for external connection to the substrate, the pin for external terminal is provided on the substrate, so that the light emitting diode lamp can be mounted on the light emitting diode lamp. After mounting on the board, the light emitting diode lamp and the connecting wire for external connection can be connected via a connector, for example. Therefore, the manufacturing process of the light emitting diode lamp and the process of mounting the light emitting diode lamp on the light emitting diode lamp mounting board are simplified, and the workability is improved.

That is, in the manufacturing process of the light emitting diode lamp, the work of soldering the connecting wire for external connection to the gap of the light emitting diodes densely mounted and the external side on the back side of the lamp case when the substrate is attached to the lamp case. There is no need to carry out the work of passing the connecting wire for connection. Moreover, since the connecting wire for external connection is not directly connected to the substrate, the work of resin injection is easy, and when curing the resin, the space is effectively used because there is no connecting wire for external connection. Since the number of light emitting diode lamps that can be put in the resin curing furnace at one time can be increased, mass productivity is improved.

In the process of mounting the light emitting diode lamp on the light emitting diode lamp mounting board,
Since it is not necessary to pass a connecting wire for external connection into the O-ring, the O-ring can be easily fitted into the groove on the back surface of the lamp case, and in the past, the LED lamp was used as a board for mounting the LED lamp. In the case where they are densely arranged, the connecting wires for external connection of the light emitting diode lamps are entangled with each other, which makes the wiring work complicated, but according to the present embodiment, such inconvenience does not occur. Furthermore, in the mounting process of the light emitting diode lamp, the connecting wire for external connection is not yet connected, so the nut can be tightened on the cylindrical part of the lamp case using an electric nut tightening tool, so the light emitting diode lamp Can be easily attached to a light emitting diode lamp mounting board.

Further, after mounting the light emitting diode on the substrate by soldering or the like, it is possible to easily connect to another device by using the pin protruding from the substrate, so that aging check and the like can be easily performed. be able to.
In particular, by using a plurality of continuous substrates 30A in which a plurality of substrates are connected as shown in FIG. 6, the aging check can be more easily performed. The multiple substrates 30A have Vs vertically and horizontally.
The cut groove 32 is formed, and can be easily bent along the groove 32 to be separated into a plurality of substrates 30. By mounting the light-emitting diode on the plurality of boards 30A and attaching the plurality of boards 30A at a predetermined position, the aging check of a plurality of boards can be performed at a time, so that the work amount of the aging check can be significantly reduced.

Further, when the light emitting diode lamp and the control circuit are connected after the light emitting diode lamp is mounted on the light emitting diode lamp mounting board, an external connection having a length corresponding to the distance between the light emitting diode lamp and the control circuit is provided. Therefore, it is possible to use a connecting wire for use, and therefore, it is possible to reduce the amount of connecting wire used, reduce the cost, and reduce the weight of the display plate.

In the above embodiment, the case where the connector 70a used is one which is completely fitted and mounted in the cylindrical portion 52 of the lamp case 50 has been described.
The present invention is not limited to this, and in order to improve the connection strength of the connector, for example, a connector 70b provided with a screw cap as shown in FIG. 7 or FIG.
You may use the connector 70c which has a hook part as shown in FIG.

Further, in the above embodiment, the case where the back surface of the light emitting diode lamp corresponds to the connector and the electrical connection between the connecting line for external connection and the pin is established through the connector has been described. However, it is not necessary to make the back surface of the light emitting diode lamp compatible with the connector, and the connection line for external connection and the pin may be soldered, crimped, or lapped to form a connection line for external connection. It may be electrically connected to the pin.

[0028]

As described above, according to the present invention, since the pins for external connection are provided on the back surface of the substrate, the connection work between the connection lines for external connection and the pins is completed. Since it can be performed later, the connection line for external connection does not get in the way in the manufacturing process and the mounting process, and thus the work such as wiring and resin sealing becomes easy,
It is possible to provide a light emitting diode lamp with improved workability and mass productivity.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a light emitting diode lamp that is an embodiment of the present invention.

FIG. 2 is a schematic sectional view of a light emitting diode used in the light emitting diode lamp.

FIG. 3 is a view for explaining a support tool that supports a pin.

FIG. 4 is a view for explaining a support tool that supports a pin.

FIG. 5 is a schematic cross-sectional view showing a state in which a light emitting diode lamp is mounted on a light emitting diode lamp mounting board.

FIG. 6 is a diagram for explaining a plurality of continuous boards.

FIG. 7 is a diagram for explaining another example of a connector connected to a pin.

FIG. 8 is a diagram for explaining another example of a connector connected to a pin.

FIG. 9 is a schematic sectional view of a conventional light emitting diode lamp.

[Explanation of symbols]

 10 Light emitting diode 12 Light emitting element 14a, 14b Lead 16 Wire 18 Light transmissive material 22 Concave reflective surface 24 Radiating surface 30 Substrate 30A Multiple continuous substrate 32 V cut groove 40 pin 42a, 42b Support 50 Lamp case 52 Cylindrical part 54 Groove 56 O-ring 60 Black resin 70a, 70b, 70c Connector 72 Connection wire 80 Nut 90 Light emitting diode lamp mounting board

Claims (4)

[Claims] 1. A light emitting diode lamp in which a substrate having a plurality of light emitting diodes arranged on the front surface is housed in a lamp case, wherein a pin for external connection is provided on the back surface of the substrate. 2. The light emitting diode according to claim 1, wherein the shape and arrangement of the pins match the shape and arrangement of the pin holes of the connector, and the rear surface of the lamp case is provided with connecting means into which the connector can be fitted. lamp. 3. The light emitting diode lamp according to claim 1, further comprising support means for supporting the pins at predetermined intervals. 4. The light emitting diode includes a light emitting element, a lead portion for supplying electric power to the light emitting element, a concave reflecting surface provided to face a light emitting surface of the light emitting element, and a light emitting element emitting light. 2. A radiation surface that radiates the light reflected by the concave reflection surface to the outside, and a light transmissive material that fills the space between the concave reflection surface and the radiation surface.
2. The light emitting diode lamp according to 2 or 3.