JPH0423336Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is an LED lamp used for outdoor decorative lamps, indicator lamps for general signboards, indicator lamps for information equipment, lamps for traffic equipment, road indicator lamps, etc. It is related to.

[Prior art] Generally, this type of LED lamp is
The structures shown in the figures and FIG. 14 are known. In this known LED lamp, 1 is a cylindrical lamp body, a base 2 is attached to one end of the lamp body, and a front lens 3 is attached to the other end. Inside the lamp body 1, a plurality of single LEDs 5a that emit red light and an LED 5b that emit yellow light are attached to a printed circuit board 4, and the printed circuit board 4 has a plurality of single LEDs 5a and 5b that emit yellow light.
The configuration is such that power is supplied from the terminal via a wiring 6 and a series resistor 7.

In the LED lamp having such a configuration, the LEDs attached to the printed circuit board 4 are arranged such that, for example, red LEDs 5a and yellow LEDs 5b are arranged alternately to obtain a mixed color.
The lead frame must be inserted and soldered one by one, and when the number of LEDs increases, this work becomes extremely troublesome and there is a problem in that it is easy to make mistakes in the arrangement to create mixed colors.
Also, since each single LED is installed individually,
Another problem is that adjusting the optical axis of each individual LED is troublesome.

[Problems to be solved by the invention] The present invention solves the problem of the arrangement errors and troublesome soldering work during the assembly work and the troublesome soldering work in the conventional example.
The aim is to solve problems such as optical axis adjustment of LEDs all at once.

[Means for Solving the Problems] The present invention is a specific means for solving the above problems, in which a plurality of LEDs are housed side by side in a suitably shaped capsule and fixed with a transparent or colored compound to form a unit. , an LED lamp characterized in that a plurality of the units are attached to a printed circuit board disposed within the lamp body, wherein a plurality of individual LEDs are assembled in advance into a capsule in a desired combination and the unit is assembled into a capsule. Since the desired number of units are simply attached to the printed circuit board, the attachment work is extremely easy and there is no possibility of erroneous arrangement.

[Examples] Next, the present invention will be explained in more detail with reference to illustrated examples. In order to facilitate understanding, the same parts as in the conventional example will be described with the same reference numerals. In FIG. 1, 1 is a cylindrical lamp body, a base 2 is attached to one end of the lamp body, and a front lens 3 is attached to the other end. A printed circuit board 4 is disposed within the lamp body 1, and the configuration in which a wiring 6 and a series resistor 7 for supplying power to the printed circuit board 4 are connected is the same as in the conventional example.

The feature of this invention is that instead of a single LED being attached to the printed circuit board 4,
The point is that a unit 8 in which a plurality of LEDs are combined in advance is attached. That is, the unit 8 can be formed into various shapes, but for example, as shown in FIGS. 3 and 4, it is formed into a substantially fan shape when viewed from the front.
Arrange multiple LEDs to form one unit.
In this case, a fan-shaped capsule 9 is formed, and a combination of, for example, a red LED 5a, a yellow LED 5b, a green LED 5c, and an orange LED 5d are housed in the capsule.
The frame 10 of the LED extends through the bottom 11 of the capsule 9. Each LED is housed so as to protrude by a predetermined length A from the upper edge of the capsule 9 so as not to impair the straightness of the emitted light color, and the inside of the capsule is made of transparent material such as epoxy resin or colored with an appropriate color. Each LED filled with compound 12 and attached is fixed to form one unit 8. By combining a plurality of LEDs into one unit in advance in this manner, it is possible to avoid mistakes in the arrangement when mounting the LEDs on the printed circuit board 4.

5 to 10 are modified examples of the unit 8 viewed from the front, and FIG. 5 uses a rectangular capsule 9a, in which LEDs 5a, 5b, 5c, and 5d emitting light of different colors are used. A unit 8 is formed by appropriately combining them. In other examples, a long capsule 9b, a triangular capsule 9c, and a circular capsule 9d are shown, and the interior contains appropriate parts.
LEDs are installed in combination.

Another example of the unit 8a shown in FIG. 11 is an example in which a suitably shaped capsule 9x and a printed circuit board 14 are combined, and a plurality of LEDs 5 with suitably emitted light colors are provided.
A to 5d are attached to a printed circuit board 14, then housed in a capsule 9x and fixed with a transparent or colored compound 12 to form a unit. In this case, since the printed circuit board 14 is used, the plurality of attached LEDs 5a to 5d are connected in series as shown in FIG. 12, and only two lead frames 10 are taken out from the printed circuit board 14. This simplifies the soldering work when attaching the unit 8a to the printed circuit board 4 disposed inside the lamp body 1.

In this way, multiple LEDs 5a with different emitting colors
~5d in one capsule and integrated with the compound 12, the light emitted from each adjacent LED in the horizontal direction via the compound is mixed with each other and taken out, and the entire unit 8 is As a result, light can now be emitted from the ground, increasing the utilization of light.

[Effects of the invention] As explained above, the LED lamp according to the invention consists of a plurality of LEDs housed side by side in an appropriately shaped capsule and fixed with transparent or colored compound to form a unit. Since the configuration is such that only the required number of LEDs can be attached to the printed circuit board installed inside, single LEDs can be used to create mixed colors.
This has an excellent effect in that assembly and wiring work can be performed extremely easily without the need for arranging the LEDs incorrectly or adjusting the optical axis of a single LED.

In addition, since multiple LEDs are assembled into units in advance, they not only have superior vibration resistance compared to those that are installed individually, but also have superior properties such as the ability for adjacent LEDs to have an even color mixture for each unit. be effective.

Furthermore, since the shape of the unit can be changed arbitrarily, it is possible to quickly adapt to the required mounting position and condition, which is an excellent effect.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view showing an embodiment of the LED lamp according to the present invention, Fig. 2 is a front view of the embodiment, and Fig. 3 is a front view of a unit used in the embodiment. Figure 4 is a sectional view taken along the - line in Figure 3;
5 to 10 are schematic front views showing modified examples of the unit, FIG. 11 is a sectional view similar to FIG. 4 showing another embodiment of the LED lamp according to the present invention, and FIG. 12 is a schematic front view showing modifications of the unit. A wiring diagram showing the connection state of each LED in the same embodiment, FIG. 13 is a sectional view of a conventional LED lamp, and FIG. 14 is a front view of the same LED lamp. 1...Lamp body, 2...Base, 3...Front lens, 4, 14...Printed circuit board, 5a, 5b,
5c, 5d...LED, 6...Wiring, 7...Series resistance, 8, 8a...Unit, 9, 9a, 9b,
9c, 9d, 9x...capsule, 10...lead wire, 11...bottom, 12...compound.

Claims (1)

[Scope of utility model registration request] The lamp is characterized in that a plurality of LEDs are arranged side by side in a suitably shaped capsule and fixed with a transparent or colored compound to form a unit, and a plurality of the units are attached to a printed circuit board arranged inside the lamp body. LED lamp.