KR101503055B1

KR101503055B1 - Traffic signal lamp

Info

Publication number: KR101503055B1
Application number: KR1020130056215A
Authority: KR
Inventors: 오승호
Original assignee: 유한회사 아이엘에스
Priority date: 2013-05-20
Filing date: 2013-05-20
Publication date: 2015-03-13
Also published as: KR20140136134A

Abstract

A traffic light is started. A traffic signal light of the present invention includes a case having an inner space and forming an outer appearance; A cylindrical fixing pipe provided at a plurality of positions so as to be spaced apart from the inside of the case; A plurality of light emitting diodes spaced from each other along a circumferential direction of the inner circumferential surface of the fixing tube; And a diffusion plate provided at an end of the fixing tube for diffusing light emitted from the plurality of light emitting diodes. According to the present invention, even when any one of the light emitting diodes is damaged and can not emit light, it is possible to minimize the reduction of the cosmetic effect by emitting uniform light as a whole.

Description

TRAFFIC SIGNAL LAMP}

The present invention relates to a traffic signal lamp, and more particularly, to a traffic signal lamp which minimizes reduction of aesthetic effect by emitting uniform light even when one or more light emitting diodes are damaged and can not emit light, To a traffic light to be easily identified.

Generally, a traffic light is installed at an intersection or a crosswalk, and is composed of a combination of red, green, yellow, and arrows. The traffic light is controlled by repeating lighting and lighting sequentially according to the set time or traffic volume.

The conventional traffic signal lamp includes a case for forming an outer appearance, a fixed pipe arranged to be spaced apart from the inner side of the case, and a light emitting diode portion provided at an end of the fixed pipe.

Here, the light emitting diode section comprises a printed circuit board having a substantially disc-shaped shape and a plurality of light emitting diodes provided on one surface of the printed circuit board.

However, in such a conventional light emitting diode unit structure, when several light emitting diodes can not be lighted due to factors such as a contact failure among a plurality of light emitting diodes and a current application fault, an external vehicle driver and a pedestrian check a traffic light There arises a problem that the region where the light can not be diverted can be clearly identified.

In other words, since the area where the light is not diffused is visually distinguished, the vehicle driver and the pedestrian visually confirm the failure of the traffic light visually, and the light emitting diodes which are not lighted reduce the total light emission amount, It is inconvenient to check the lighting of the traffic lights more easily.

It is an object of the present invention to provide a light emitting diode (LED) that can minimize the reduction of aesthetic effect by emitting even light even when one of the light emitting diodes is damaged and can not emit light, .

The solution to the problem of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

The above object can be achieved by a casing having an inner space and forming an outer appearance; A cylindrical fixing pipe provided at a plurality of positions so as to be spaced apart from the inside of the case; A plurality of light emitting diodes spaced from each other along a circumferential direction of the inner circumferential surface of the fixing tube; And a diffusion plate provided at an end of the fixing pipe for diffusing light emitted from the plurality of light emitting diodes.

And a reflection plate for reflecting the light emitted from the plurality of light emitting diodes to the diffusion plate side may be provided inside the fixing pipe.

The plurality of light emitting diodes may be provided on at least one flexible circuit board attached to the inner surface of the fixing pipe.

The opening of the case may be provided with a polarizing film portion to cover the fixing tube and the diffusion plate.

The traffic signal lamp according to the embodiment of the present invention has the following effects.

First, even when one of the light emitting diodes is damaged and can not emit light, it is possible to minimize the reduction of the cosmetic effect by emitting uniform light as a whole.

Secondly, since the light emitting diode is provided inside the fixing pipe, it is possible to prevent the heat of low temperature in winter and the heat, moisture, dust and the like of high temperature in summer from being transmitted to the light emitting diode as much as possible. Therefore, the durability of the light emitting diode is prevented .

Third, it is possible to minimize the visual discomfort of the traffic driver and the sidewalk driver by allowing the light diffused through the diffusion plate (all light including diffuse reflection) to be transmitted to the outside in a state of having a constant wavelength, .

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a perspective view showing a traffic light according to an embodiment of the present invention.
FIG. 2 is a partially exploded perspective view of FIG. 1. FIG.
Fig. 3 is a partial sectional view of Fig. 1. Fig.
4 is a cross-sectional view showing another example of Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Wherein like reference numerals refer to like elements throughout.

FIG. 1 is a perspective view showing a traffic light according to an embodiment of the present invention, FIG. 2 is a partially exploded perspective view of FIG. 1, FIG. 3 is a partial cross-sectional view of FIG. 1 and FIG. 4 is a cross- .

The traffic signal lamp according to the preferred embodiment of the present invention prevents a portion where light can not be apparent from being apparent when the at least one of the plurality of light emitting diodes is damaged and can not emit light, It is to make the light appear to be emitted as a whole.

1 to 3, a traffic signal light according to an embodiment of the present invention includes a case 100 having an inner space and forming an outer appearance, a cylindrical shape having a plurality of spaces provided inside the case 100, A plurality of light emitting diodes 300 spaced from each other along a circumferential direction of the inner circumferential surface of the fixing tube 200 and a plurality of light emitting diodes 300 provided at ends of the fixing tube 200, And a diffusion plate 400 for diffusing the light.

The case 100 has a rectangular tubular structure with one side opened, and is connectable to a support rod or the like on the road.

A plurality of fixing pipes 200 are provided in the inner space of the case 100 so as to be spaced apart from each other and one end of the fixing pipe 200 is not protruded toward one end of the case 100, .

In this embodiment, as shown in FIG. 2, the light emitting diodes 300 are spaced apart from each other along the inner peripheral surface of the fixing pipe 200. Specifically, the plurality of light emitting diodes 300 may be provided on the flexible circuit board 310 attached to the inner surface of the fixing pipe 200.

In other words, the flexible circuit board 310 has a flexibility higher than a certain level so that the flexible circuit board 310 can bend, and at least one of the flexible circuit boards 310 can be fixed along the inner circumferential surface of the fixing pipe 200.

However, the present invention is not limited to this, and a printed circuit board which is generally not flexible according to the curvature or the like at a specific portion of the fixing tube 200 may be provided.

In this embodiment, a plurality of light emitting diodes 300 are provided on at least one flexible circuit board 310, so that the spacing between light emitting diodes 300 can be uniformly maintained.

4, after the plurality of through holes 210 are formed along the circumferential direction of the fixing tube 200, the head of the light emitting diode 300 is inserted into the through hole 210 and fixed to the through hole 210 , So that the light is emitted to the inside of the fixing pipe 200.

Also, in this embodiment, a diffusion plate 400 is provided at the end of the fixing pipe 200 to diffuse the light emitted from the plurality of light emitting diodes 300. A reflection plate 110 for reflecting the light emitted from the plurality of light emitting diodes 300 toward the diffusion plate 400 is provided inside the fixing pipe 200.

First, the reflection plate 110 emits light from the light emitting diode 300 provided along the inner circumferential surface of the fixing pipe 200 and is not transmitted to the diffusion plate 400, (400). Therefore, the reflection plate 110 prevents light loss from occurring as much as possible, so that the intensity of light is prevented from decreasing, thereby maintaining the light emission efficiency constant.

Next, the diffusion plate 400 is used to obtain a uniform brightness according to the viewing angle, and PET or PC (poly carbonate) resin is used as the material.

The diffusion plate 400 diffuses light directly transmitted from the plurality of light emitting diodes 300 or refracted in the process of passing light reflected and transmitted by the reflection plate 110, To be transmitted to the periphery. For this diffusion, the diffusion plate 400 is provided with a fine convex lens structure.

That is, in this embodiment, a plurality of light emitting diodes 300 are disposed along the inner circumferential surface of the fixing pipe 200, and the diffusion plate 400 diffuses the light emitted from the light emitting diode 300 and transmits the light to the outside For example, even if one or more of the light emitting diodes 300 are damaged and can not emit light, it is possible not only to emit uniform light as a whole, but also to distinguish regions where light does not radiate from the outside due to refraction of light It is also possible to prevent a decrease in the cosmetic effect due to the difficulty. In addition, it is possible to easily detect the signal light even at a long distance by reducing the decrease in the amount of light emission.

In this embodiment, the light emitting diode 300 is provided inside the fixing pipe 200, so that it is possible to prevent the heat of low temperature in winter and the heat, moisture, dust and the like of high temperature in summer from being transmitted to the side of the light emitting diode 300 It is possible to prevent the durability of the light emitting diode 300 from being reduced as much as possible.

As shown in FIGS. 1 and 3, a polarizing film unit 500 is provided at an opening of the case 100 so as to cover the fixing pipe 200 and the diffusion plate 400.

The polarizing film unit 500 is provided to transmit the light diffused through the diffusion plate 400 (light including diffused reflection) to the outside in a state of having a certain wavelength, The inconvenience is minimized so that the light of the traffic light can be more easily recognized. Here, the polarizing film portion 500 may be composed of two polarizing films, and the principle of such a polarizing film is a known fact, so a detailed description thereof will be omitted.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit of the following claims.

100: Case 110: Reflector
200: fixed tube 300: light emitting diode
310: Flexible circuit board 400: Diffusion plate
500: polarizing film part

Claims

A case 100 having an inner space and forming an outer appearance;
The case 100 is provided with a plurality of spaced apart inner portions of the case 100 and the other end of the case 100 protrudes toward the rear of the case 100 by a predetermined amount or more, A fixing pipe 200;
A plurality of flexible circuit boards 310 disposed at predetermined intervals along the inner circumferential surface of the fixing pipe 200;
A plurality of light emitting diodes (300) coupled to the plurality of flexible printed circuit boards (310) in a protruding manner on the inner surface of the plurality of flexible circuit boards (310);
A diffusion plate 400 provided at one end of the fixing pipe 200 for diffusing light emitted from the plurality of light emitting diodes 300; And
The light emitting diode 300 is disposed inside the fixing tube 200 so as to face the diffusion plate 400 with respect to the light emitting diode 300 and is spaced apart from the light emitting diode 300 in a state of being recessed toward one end of the fixing tube 200 And a reflection plate (110) for reflecting the light emitted from the plurality of light emitting diodes (300) toward the diffusion plate (400).
The method according to claim 1,
And a reflection plate (110) for reflecting the light emitted from the plurality of light emitting diodes to the diffusion plate side is provided inside the fixing pipe.
delete
The method according to claim 1,
Wherein a polarizing film unit (500) is provided at an opening of the case (100) so as to cover the fixing pipe and the diffusion plate.