JPH11161198A - Light emitting diode reflection plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light emitting diode(LED) reflection plate capable of improving the visibility of lighting state of alight emitting diode(LED) mounted on the surface of a printed board from a side surface side and being easily manufactured. SOLUTION: Partition sections 1b are formed into plural plate forms and adjacent partition sections 1b are arranged so that the section 1b are opposing to each other. A reflection section 1a is formed in the inner surface of the connection section which connects the adjacent partition sections 1b. Then, an LED reflection plate 1 is fixed to the surface of the board 3 so that an LED 2 is located between the adjacent partition sections 1b. Thus, the light beams from the LED 2 are reflected by the section 1a toward the side surface of the LED 2.

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 reflector, and more particularly, to a light-emitting diode reflector mounted on a printed circuit board for lighting.

[0002]

2. Description of the Related Art Light emitting diodes are usually formed so that irradiation light is projected on the front side thereof, so that visibility from the side is not always good. The following measures have been adopted.

For example, Japanese Utility Model Laid-Open Publication No. 56-58877 discloses that a light reflecting object having an effective reflecting surface directed to the side surface is integrally buried in a mold resin, so that a lighting state from the side surface is achieved. A technique for improving visibility is disclosed.

[0004]

However, at present, in order to mount components on a printed circuit board at a high density, surface mount type components are often used. However, light is reflected on a small surface mount type light emitting diode. Enclosing the structure is difficult in manufacturing.

[0005] Further, even when a reflector for improving visibility from the side of the light emitting diode is sealed,
Since the parts themselves are small, it is not easy to check the light emission. In particular, when the light emitting diodes are mounted close to each other, or when the front plate is installed in the package, there is a possibility that misrecognition may occur due to the crossing of light.

In view of the above, the present invention has been made in view of the above-mentioned conventional problems, and has an improved visibility of a lighting state from a side surface of a light emitting diode mounted on a surface of a printed circuit board, and can also be manufactured. An object of the present invention is to provide an easy-to-use light emitting diode reflector.

[0007]

According to the first aspect of the present invention,
A plurality of plate-shaped partitions are provided, adjacent partitions of the plurality of partitions are arranged so as to face each other, and a reflecting portion formed on an inner surface of a connecting portion connecting the adjacent partitions is provided. A light-emitting diode reflector provided, wherein the light-emitting diode mounted on the surface of the printed circuit board is located between the adjacent partitions, by fixing the light-emitting diode reflector to the surface of the printed circuit board, The light from the light emitting diode is reflected to the side surface of the light emitting diode by the reflector.

The invention according to claim 2 is characterized in that the partition part extends to a front plate located in front of the light emitting diode.

According to a third aspect of the present invention, the reflecting section has an appropriate angle for reflecting light from the light source section in parallel to the side face from the light source section of the light emitting diode, and has a plurality of cross sections. It is characterized by being formed in a triangular wave shape.

According to the first aspect of the present invention, the light emitting diode reflector is fixed to the surface of the printed circuit board so that the light emitting diode mounted on the surface of the printed circuit board is located between adjacent partitions. Since the light from the light emitting diode is reflected by the reflecting portion to the side surface of the light emitting diode, the state of light emission from the side surface of the existing light emitting diode mounted on the surface of the printed circuit board with a simple configuration. Can be improved, and when a plurality of light emitting diodes are successively mounted, the light from each light source of the light emitting diodes does not intersect, thereby preventing erroneous recognition.

According to the second aspect of the present invention, since the partition portion extends to the front plate located in front of the light emitting diode, it is possible to completely eliminate the light crossing between adjacent light emitting diodes. It is possible to easily check the lighting state from the side of each light emitting diode,
Erroneous recognition can be prevented more reliably.

According to the third aspect of the present invention, the reflecting portion is
2. The light emitting diode according to claim 1, wherein the light emitting diode has an appropriate angle for reflecting light from the light source in parallel to the side surface from the light source, and has a cross-section formed into a plurality of triangular waves, so that the light emitting diode has a simple configuration. Alternatively, the second effect can be obtained.

[0013]

Next, a specific example of an embodiment of a light-emitting diode reflector according to the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a first embodiment of a light emitting diode reflector according to the present invention. The light-emitting diode reflector 1 is manufactured by plating a resin-molded product, or is manufactured by aluminum molding. In order to improve the reflection of light from the light-emitting diode to the side surface, a glossy plating is used. Reflective portion 1a and a partition portion 1b functioning so that light from each light emitting diode does not cross.
And a fixing lead wire 1c for soldering the light emitting diode reflector 1 to a printed circuit board.

As shown in FIG. 4, the reflecting section 1a has a plurality of triangular wave cross sections having an angle necessary to reflect light from the light source section of the light emitting diode 2 to the side surface in parallel. You.

As shown in FIG. 1, the partition 1b is
Several light-emitting diodes are provided at predetermined intervals in one direction, and light-emitting diodes are arranged between adjacent and opposed partitioning portions 1b as described later.

A plurality of fixing lead wires 1c are provided at the lowermost portion of the wall surface opposite to the reflecting portion 1a, and are provided for fixing the light emitting diode reflecting plate 1 on a printed circuit board.
Instead of using the fixing lead wire 1c, for example, a structure in which the entire light emitting diode reflector 1 is fixed on the bottom surface side of the printed board via a through hole provided in the printed board may be employed.

Next, a method of attaching the light-emitting diode reflector 1 having the above structure to a printed circuit board will be described.
As shown in FIGS. 2 and 3, a plurality of light emitting diodes 2 are fixed on the surface of the printed circuit board 3 at predetermined intervals in one direction.

The light-emitting diode reflector 1 is placed on the printed circuit board 3 so that the partition 1b of the light-emitting diode reflector 1 is located in the gap between the adjacent light-emitting diodes 2, and the fixing lead wire 1c is mounted. To the printed circuit board 3 to fix the entire light emitting diode reflector 1.

As described above, by positioning the light-emitting diode reflector 1 on the printed circuit board 3 in consideration of the position of the light-emitting diode 2, light from the light-emitting diode 2 has a cross section as shown in FIG. Since the light is reflected in parallel to the side surface of the light emitting diode 2 by the plurality of reflecting portions 1a formed in a triangular wave shape, the visibility of the lighting state from the side surface of the light emitting diode 2 is improved.

FIG. 5 is a perspective view showing a second embodiment of the light emitting diode reflector according to the present invention. The light-emitting diode reflector 11 in this embodiment is manufactured by aluminum molding or the like, like the light-emitting diode reflector 1, and includes a reflector 11a, a partition 11b, and a fixing lead 11c. The light-emitting diode reflector 11 has the same basic structure as the light-emitting diode reflector 1 of the first embodiment, but as shown in FIGS. 6 and 8, a partition 11b (first embodiment). (Corresponding to the partition portion 1b in the example) reaches the front surface 4a of the front plate 4 of the printed circuit board 3.

As shown in FIGS. 7 and 8, the front plate 4 is provided with a notch 4b for confirming a lighting state of the light emitting diode 2, and a front end 11d of a partition 11b of the light emitting diode reflecting plate 11. Are accommodated and fixed in the notch 4b.

In this embodiment, as described above, the partition 11
Since the front end 11d of b is formed so as to reach the front surface 4a of the front plate 4, the crossing of light between the adjacent light emitting diodes 2 can be completely eliminated. More easily.

In the above embodiment, the reflecting portions 1a, 1a
11a is parallel to the side of the light source of the light emitting diode 2 and has an appropriate angle for reflecting the light from the light source and has a cross section of a plurality of triangular waves. Is not limited to this shape, and may be any structure that can reflect light from the light source unit in parallel to the side surface.

[0025]

According to the first aspect of the present invention, the visibility of the light emitting state from the side of the existing light emitting diode mounted on the surface of the printed circuit board can be improved with a simple structure. It is possible to provide a light-emitting diode reflector that can prevent erroneous recognition when a plurality of light-emitting diodes are continuously mounted.

According to the second aspect of the present invention, light crossing between adjacent light emitting diodes can be completely eliminated, so that it is easier to check the lighting state from the side of each light emitting diode. Thus, it is possible to provide a light-emitting diode reflector that can more reliably prevent erroneous recognition.

According to the third aspect of the present invention, it is possible to provide a light-emitting diode reflector having the advantages of the first and second aspects with a simple structure.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a light emitting diode reflector according to the present invention.

FIG. 2 is a top view showing a state in which the light emitting diode reflector shown in FIG. 1 is mounted on a printed circuit board.

FIG. 3 is a side view of the light emitting diode reflector shown in FIG. 2 and a printed circuit board including the light emitting diodes.

FIG. 4 is a sectional view taken along line II of FIG. 2;

FIG. 5 is a perspective view showing a second embodiment of the light emitting diode reflector according to the present invention.

FIG. 6 is a top view showing a state where the light emitting diode reflector shown in FIG. 1 is mounted on a printed circuit board.

FIG. 7 is a side view of the light emitting diode reflector shown in FIG. 2 and a printed circuit board including the light emitting diodes.

8 is a sectional view taken along line II-II of FIG.

[Explanation of symbols]

 1, 11 Light-emitting diode reflector 1a, 11a Reflector 1b, 11b Partition 1c, 11c Fixing lead wire 11d Tip 2 Light-emitting diode 3 Printed circuit board 4 Front plate 4a Front 4b Notch

Claims (3)

[Claims] 1. It comprises a plurality of plate-shaped partitions,
A light-emitting diode reflector comprising a reflector arranged on an inner surface of a connecting portion for connecting adjacent partitions of the plurality of partitions so as to face each other, the surface of a printed circuit board. By fixing the light-emitting diode reflector to the surface of the printed circuit board so that the light-emitting diode mounted on the light-emitting diode is located between the adjacent partitions, light from the light-emitting diode is emitted by the reflector. A light-emitting diode reflector, which reflects light to the side surface of the diode. 2. The light-emitting diode reflector according to claim 1, wherein the partition extends to a front plate located in front of the light-emitting diode. 3. The reflecting portion has an appropriate angle for reflecting light from the light source in parallel to a side surface from the light source of the light emitting diode, and has a cross section of a plurality of triangular waves. The light-emitting diode reflector according to claim 1 or 2, wherein: