CN2456989Y

CN2456989Y - Luminous diode signal lamp for railway

Info

Publication number: CN2456989Y
Application number: CN 00245109
Authority: CN
Inventors: 唐德渝; 吴刚; 王国忠; 刘昌全
Original assignee: CHONGQING LONGSTAR OPTO-ELECTRONICS MANUFACTURE Co Ltd
Current assignee: CHONGQING LONGSTAR OPTO-ELECTRONICS MANUFACTURE Co Ltd
Priority date: 2000-11-15
Filing date: 2000-11-15
Publication date: 2001-10-31
Anticipated expiration: 2010-11-15

Abstract

The utility model relates to a luminous diode signal lamp for railways. Single luminous diode lamps are arrayed and arranged on a printed circuit board; a cylindric optical plastic convex lens is covered on each single luminous diode lamp; multi-way series and parallel modes are used in the circuit. The signal lamp is designed with the secondary light-collecting structure, and has high light utilization efficiency; the caution distance is increased. The luminous diode signal lamp takes luminous diodes as a light source, and has the advantages of enhanced service life and small energy consumption. The circuit design is convenient to maintain and is safe.

Description

The railway LED signal lamp

The utility model belongs to the lighting apparatus technical field, is specifically related to a kind of raising light output, strengthens the railway LED signal lamp in service life.

Traditional railway signal lamp is to adopt two osram lamps (filament lamp), and adopting two tungsten filaments is in order to guarantee the reliability of signal lamp.However, its life-span still can only reach hundreds of hour, and the maintain and replace work capacity is very big.LED is as lighting source, its significant advantage is to use the life-span long, at present, use it for the existing relevant bibliographical information of traffic and transport field, referring to Chinese patent 90223829 " locomotive light bar led signal lamp ", it adopts digital light-emitting diode to be contained on the wiring board, constitutes the light bar led tube core, again it is loaded in the reflection cavity, with lamp holder, the integrally formed signal lamp of lamp socket.This technology has adopted light-emitting diode as basic luminous units, overcome the shortcoming of conventional incandescent, but because it does not do further processing to luminescence unit, the spotlight effect of light-emitting diode is not enough, the scatter loss that light produces part luminous energy, therefore can't use down by outdoor high light line environment along the railway.

At the deficiency that prior art exists, the utility model provides a kind of light-emitting diode that utilizes to do light source, and changes structure to improve the railway LED signal lamp of its light output.

The present technique implementation is as follows:

The light-emitting diode list lamp of this signal lamp be adopt red, green, yellow, blue, different colours semiconductor LED material is made in vain, with these single lamps according to rational circuit theory and layout arrangement on a printed circuit board (PCB).And covering optical plastic convex lens cylindraceous on each light-emitting diode, and by the emission light secondary condensation of these convex lens, form parallel rays to the dead ahead with light-emitting diode, its dead ahead light intensity is increased, thereby improve its optical efficiency.And make dead ahead light more even.

Adopt above structure, bring following advantage to present technique:

1. designed the secondary condensation structure, light utilization ratio height has increased the caution distance.

2. adopt light-emitting diode to do light source, strengthen service life, and under nominal service condition, its life-span is that tens times of original filament lamp arrive hundred times;

3. energy consumption is low, and a caution its consumption of current of LED railway signal lamp apart from 1000 meters has only the 1/15-1/30 of filament lamp formula signal lamp;

4. owing to adopt the multipath series-parallel mode on the circuit, when the single lamp of part lost efficacy therein, its semiotic function was still effective.But working current reduces, and can make the control board in time detect the single lamp of part and lose efficacy, and is convenient to timely replacing.Thereby guaranteed the safe reliability of signal lamp.

Below in conjunction with drawings and Examples present technique is described further:

Fig. 1 is railway LED signal lamp cross section structure figure;

Fig. 2 is railway LED signal lamp plane structure chart;

Fig. 3 is railway LED signal lamp circuit diagram.

Embodiment: referring to Fig. 1 and 2, this railway is made up of circuit card 2, light-emitting diode list lamp 1 and drum type brake optical plastic convex lens 3 with LED signal lamp, red, green, yellow, blue, white different colours is arranged, light-emitting diode list lamp 1 by certain apart from alignment placement on printed circuit board (PCB) 2, and circuit links to each other.Be covered with drum type brake optical plastic convex lens 3 on every light-emitting diode list lamp 1, realize secondary condensation.Circuit adopts the multipath series-parallel mode referring to Fig. 3, and five of red, yellow every strings four are gone here and there totally, three of blue, white, green every strings, totally four strings.

Claims

1. railway LED signal lamp, it is arranged on light-emitting diode list lamp bank row on the printed circuit board (PCB), and links to each other by circuit, it is characterized in that being covered with optical plastic convex lens on every light-emitting diode list lamp.

2. railway LED signal lamp according to claim 1 is characterized in that the optical plastic convex lens are cylindric.

3. railway LED signal lamp according to claim 1 and 2 is characterized in that adopting on the circuit multipath series-parallel mode.