JPH04118516U - light emitting diode indicator light - Google Patents

Abstract

(57) [Summary] [Purpose] The object is to provide a bifocal LED indicator light 10 that allows the irradiation light of an LED to be viewed from both near and far distances. [Structure] In an LED indicator light 10, a plurality of LEDs 14 are electrically connected to a printed circuit board 13 provided in a casing 11, and a cover 12 is attached to the casing so as to cover the upper part of the LEDs. 12a
A lens cut 15 such as a fisheye lens for diffusing the irradiated light from the LED is provided on the peripheral portion 12b excluding the LED.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a light emitting diode indicator light used for information indicator lights, transportation railway signals, etc. In particular, regarding light emitting diode indicator lights with improved cover lens cut structure. It is something that

0002

[Conventional technology]

Conventionally, such light emitting diode (hereinafter referred to as LED) indicator lights have There are two types: one for distance viewing and one for long-distance viewing.

0003 These LED indicator lights are, for example, printed bases installed inside a cylindrical casing. A plurality of LEDs are electrically connected and provided on the board, and above the LEDs are placed on the casing. A cover is attached to cover the

0004 5 and 6 show the LED indicator light for short-distance viewing. As shown, it is installed on the casing 2 of the LED indicator light 1 for short-distance visibility. A lens cut 4 is made on the entire surface of the attached cover 3. This lens cut 4 converts the irradiation light of an LED (not shown) with strong directional characteristics into a diffused light. It can be adjusted to widen the viewing angle. Therefore, it can be seen at close range. Since the amount of light is large, it is used at relatively short distances.

[0005] Moreover, FIGS. 7 and 8 show the above-mentioned LED indicator light for long-distance viewing. As shown in the figure, it is attached to the casing 2 of the LED indicator light 5 for long-distance visibility. The attached cover 6 is not provided with the lens cut 4 as described above. That is, even if the irradiated light from the LED passes through the cover 6, the directivity of the LED remains unchanged. This shows the light distribution characteristics of . Therefore, although this LED indicator light 5 has a narrow viewing angle, it Since it can be seen by anyone, it is used at relatively long distances.

[0006]

[Problem that the idea aims to solve]

By the way, in the conventional LED indicator lights 1 and 5, it is possible to Since it was configured to be visible at any distance, an LED table for close-range visibility was used. The indicator light 1 is difficult to see at a long distance, and on the other hand, the LED indicator light 5 for long-distance visibility is difficult to see at a short distance. There was a problem that it was difficult to see.

[0007] In view of the above points, the present invention allows LED irradiation light to be visually recognized at both short and long distances. The purpose of the present invention is to provide a bifocal LED indicator light that can be used both near and far.

[0008]

[Means to solve the problem]

According to the LED indicator light of the present invention, the above purpose is achieved by using a substrate provided inside the casing. A plurality of light emitting diodes are provided on the casing, and the light emitting diodes are covered on the casing. For a light emitting diode indicator light with a cover attached as shown, the center part of the cover Form a lens cut to diffuse the irradiation light of the above LED in the surrounding area except for This is achieved by:

[0009]

[Effect]

According to the above configuration, a lens cut is not formed in the center part of the cover. Therefore, the irradiated light of the LED in this part travels straight with the narrow directivity of the LED. do. Therefore, the LED irradiation light passing through the center of the cover cannot be seen from a distance. It will be done.

0010 In addition, a lens for diffusing the irradiation light of the LED is provided around the cover. Since a cut is formed, the irradiation light of the above LED in this part is diffused. Therefore, the viewing angle is widened and it can be seen even at relatively short distances. Therefore, in the LED indicator light of the present invention, the LED passing through the center of the cover The irradiation light of the LED and the LED irradiation light passing through the surrounding area combine to It will be visible on both sides.

[0011]

【Example】

Hereinafter, one embodiment of the LED indicator light according to the present invention will be explained in detail based on the attached drawings. do. As shown in FIGS. 1 and 2, the LED indicator light 10 of this embodiment has a cylindrical shape. It has an appearance in which a curved convex circular cover 12 is attached on top of a casing 11. are doing.

0012 As shown in FIG. 3, inside the casing 11 is a printed circuit board. 13 is provided, and a plurality of LEDs 14 are electrically connected to the printed circuit board 13. It is set up in a continuous manner. Specifically, the printed circuit board 13 has a circular shape, On the printed circuit board 13, they are arranged concentrically or vertically and horizontally. Above cover 12 is attached to cover above these LEDs 14. That is, the LED indicator light 10 of this embodiment has an internal structure similar to that of a conventional LED indicator light. However, the structure of the cover 12 is unique.

[0013] Further, the cover 12 has a different structure between the central part 12a and the peripheral part 12b. ing. That is, the LE is attached to the peripheral portion 12b of the cover 12 excluding the central portion 12a. A lens cut 15 is formed to diffuse the irradiation light of D14. This card As shown in FIG. 1, the bar 12 has a central portion 12a shaped like a disk when viewed from above. The peripheral portion 12b excluding the central portion 12a has a ring shape. The central portion 12a is made of a curved convex circular light transmitting body with a substantially uniform thickness. There is. Further, the peripheral portion 12b is a curved convex ring-shaped light transmitting body with a fisheye lens. This lens is provided with a lens cut 15 that diffuses light such as lenses. The cover 12 is made of a light-transmitting material such as glass or synthetic resin, and has a central portion 12a and a peripheral portion. The surrounding portion 12b may be molded separately and assembled, or may be molded integrally.

[0014] Next, the operation of the above embodiment will be described. As described above, the cover 12 has an overall curved convex circular shape, The disk-shaped central portion 12a and the ring-shaped peripheral portion 12b are different when viewed from a plane. It exhibits a structure. The center portion 12a of the cover 12 is a curved convex circular light transmitting body with a substantially uniform thickness. The lens cut 15 is not formed. Therefore, as shown in Figure 4 As shown in FIG. The beam S becomes a substantially straight beam S with its directivity unchanged, and can be visually recognized from a distance.

[0015] Further, the peripheral portion 12b of the cover 12 is a curved convex ring-shaped light transmitting body. It has a lens cut 15 that diffuses light, such as a fisheye lens. Therefore, The irradiation light of the LED 14 passing through the peripheral portion 12b is as shown in FIG. Then, the lens cut 15 formed on the fisheye lens etc. becomes diffused light W, which changes the viewing angle. Because it spreads out, it can be seen even at relatively short distances.

[0016] In this way, in the LED indicator light 10 of this embodiment, the central part 12 of the cover 12 The irradiation light of the LED 14 passing through a and the irradiation light of the LED 14 passing through the surrounding area are combined. Now, the straight light S and the diffused light W are mixed and can be seen at both short and long distances. It is possible to provide bifocal LED indicator lights at low cost. be.

[0017]

[Effect of the idea]

As explained above, according to the LED indicator light of the present invention, both short and long distance It is said that it is possible to achieve bifocals that can visually recognize the LED irradiation light. It has excellent effects.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of an LED indicator light according to the present invention.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a side sectional view showing the inside of the LED indicator light.

FIG. 4 is a schematic diagram showing the illumination state of the LED indicator light according to the present invention.

FIG. 5 is a plan view showing a conventional short-distance LED indicator light.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a plan view showing a conventional long-distance LED indicator light.

FIG. 8 is a side view of FIG. 7;

[Explanation of symbols]

10 LED indicator light 11 Casing 12 Cover 12a Center part of cover 12b Surroundings of cover 13 Printed circuit board 14 LED 15 Lens cut

Claims (1)

[Scope of utility model registration request] Claim 1: A light emitting diode indicator light comprising a plurality of light emitting diodes provided on a substrate provided in a casing, and a cover attached to the casing so as to cover the light emitting diodes, wherein a peripheral portion of the cover other than a central portion thereof is provided. A light-emitting diode indicator light, characterized in that a lens cut is formed in the surface of the light-emitting diode for diffusing the light emitted from the light-emitting diode.