CN205883624U - LED railway signal light source - Google Patents

Abstract

The utility model provides a LED railway signal light source adopts LED lamp pearl as the luminous point light source, including two light sources of major -minor, the input power is 10V~dual -purpose power of 15V friendship / direct current, and drive circuit includes identical main drive circuit and vice drive circuit, corresponds two light source LED lamp pearls of drive major -minor, main drive circuit and vice drive circuit connect back and two tunnel AC/DC 12V rated input voltage connection including the rectifier circuit, filter circuit and the constant current source chip that connect gradually, main drive circuit with vice drive circuit input, is its life -span improved more than 10 times than the incandescent lamp, and the energy consumption is the fifth of incandescent lamp, and illumination intensity satisfies TB2081 with chromaticity coordinates completely 89 " railway light signal colour ", TBT1917 2008 " railway signal bulb technical conditions " and TBT 3242 2010 the requirement of " LED railway signal mechanism general technical specifications ".

Description

A kind of LED railway signal light source

[technical field]

This utility model relates to the device of a kind of railway signal light source, specifically arranges a kind of LED railway signal light source.

[background technology]

Railway signal lamp is railway safe driving and the instruction properly functioning visual plant of locomotive.For a long time, this equipment The light source used is electric filament lamp, and it is low that it exists the life-span, the shortcoming that energy consumption is big so that railway signal lamp maintenance is relatively big, and spare part is deposited Reserves are big.Therefore, railway signal management and maintenance mechanism in the urgent need to upgrading a kind of safe and reliable, last a long time, energy consumption less Light source replace traditional incandescent lamp bulb.

[utility model content]

For solving the problems referred to above, this utility model provides that a kind of life-span is long, and energy consumption is low, and intensity of illumination and chromaticity coordinate Fully meet and use the LED railway signal light source required.

The purpose of this utility model is achieved through the following technical solutions:

A kind of LED railway signal light source, uses LED lamp bead as luminous point light source, and including two light sources of major-minor, input is electric Source is 10V～15V AC/DC double-purpose electric source, and drive circuit includes identical main drive circuit and secondary drive circuit, corresponding Drive two light source led lamp bead of major-minor；

Described main drive circuit and secondary drive circuit include rectification circuit, filter circuit and the constant current source core being sequentially connected with Sheet, main drive circuit and secondary drive circuit input are connected with two-way AC/DC 12V nominal input voltage after connecting.

Further, described constant-current source chip uses TPS92512 integrated circuit.

Further, described rectification circuit uses bridge filter circuit.

Further, described filter circuit uses the electric capacity connected between the inputs to constitute.

Further, described main drive circuit and secondary drive circuit outfan be also associated with by inductance and diode form defeated Go out electric current afterflow, filter circuit.

Further, said two LED lamp bead uses aluminium base PCB independent wiring and welded and installed.

Further, described drive circuit individually uses common PCB to install.

Further, whole device is arranged in an aluminum alloy casing, and LED lamp bead passes through cover plate lamp hole to emission light Line.

LED light source of the present utility model, uses LED lamp bead as luminous point light source, and including two light sources of major-minor, input is electric Source is 10V～15V AC/DC double-purpose electric source, and drive circuit includes identical main drive circuit and secondary drive circuit, corresponding Driving two light source led lamp bead of major-minor, its life-span relatively electric filament lamp improves more than 10 times, and energy consumption is 1/5th of electric filament lamp, and Intensity of illumination and chromaticity coordinate fully meet TB2081-89 " Railway light signals color ", TB/T1917-2008 " railway signal Bulb technologies condition " and the requirement of TB/T 3242-2010 " LED railway signaling mechanism general technical specifications ".

Application of the present utility model is significant, for railway signal lamp from now on for transforming traditional railway signal lamp The ting model of mechanism, intellectuality are laid a solid foundation, and by selecting high life, highly reliable LED lamp bead, reliable design, reasonably drive Galvanic electricity road, is guaranteed in less energy time-consuming (less than 10W), and light efficiency (luminous flux and chromaticity), higher than the light efficiency of conventional incandescent, ensures Safeguard that changing the lamp cycle has brought up to for two years the half a year of principle.Compatible existing railway signal incandescent light bulb socket so that this reality Incandescent lamp bulb can be directly replaced on existing railway signal lamp device with novel product.

[accompanying drawing explanation]

Fig. 1 is electrical schematic diagram of the present utility model；

Fig. 2 is LED outline dimensional drawing；

Fig. 2 a is front view；Fig. 2 b is side view；Fig. 2 c is that A is to sectional view.

[detailed description of the invention]

With specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings, but not as to this practicality Novel restriction.

Shown in Figure 1, this utility model LED railway signal light source, use full spectrum, the paster LED lamp bead of 9W power As luminous point light source, input power is 10V～15V AC/DC double-purpose electric source, can use existing railway signal lighting unit Device controls.Drive circuit includes identical main drive circuit and secondary drive circuit, corresponding driving two light source leds of major-minor Lamp bead；Overall dimensions meets GB/T 25119-2010 standard.

Drive circuit uses the 1A constant-current source of designed, designed to carry out.A whole set of circuit is two-way Redundancy Design, compatible railway letter Signal lamp major-minor silk (lamp) drive circuit.Described main drive circuit and secondary drive circuit include rectification circuit, the filtering being sequentially connected with With 10V～15V AC/DC double-purpose electric source after circuit and constant-current source chip, main drive circuit and secondary drive circuit input connection Connect.

Electrical schematic diagram divides upper and lower two parts, and symmetrical driving major-minor lamp LED, principle is identical.

Two-way AC/DC 12V nominal input voltage, whole by diode V1～V4 and electric capacity C2 in main drive circuit Stream, filtering.1A electric current is exported to LED lamp bead D1～D2 with the constant-current drive circuit crossing U1 composition.Resistance R1 and resistance in circuit R4 composition starts voltage-setting circuitry, sets minimum and starts voltage.Resistance R6 and R2 is current sampling resistor, sets output constant current The size of current value.Inductance L1 and diode V5 composition output electric current afterflow, filter circuit.Resistance R3, electric capacity C5 composition is slow to be opened Galvanic electricity road.Electric capacity C6 is that electric current adjusts compensation electric capacity.Resistance R5 is that frequency of oscillation sets resistance.

Described secondary drive circuit is completely the same with main drive circuit, pair drive circuit include V6～V10 and electric capacity C3, C4, C7、C8.The constant-current drive circuit of U2 composition exports 1A electric current to LED lamp bead D3～D4, also includes resistance R7-R11 in circuit, if Determine the size of output constant current current value.Inductance L2 and diode V6 composition output electric current afterflow, filter circuit.

As in figure 2 it is shown, during specific design, 2 LED lamp bead use aluminium base PCB independent wiring and welded and installed.Drive electricity Road individually uses common PCB to install.Whole device is arranged in an aluminum alloy casing, and LED lamp bead is outside by cover plate lamp hole Launch light.

Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to Assert that detailed description of the invention of the present utility model is only limitted to this, for this utility model person of an ordinary skill in the technical field For, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should be considered as Belong to this utility model and determined scope of patent protection by the claims submitted to.

Claims (8)

1. a LED railway signal light source, it is characterised in that: employing LED lamp bead is as luminous point light source, including two light of major-minor Source, input power is 10V～15V AC/DC double-purpose electric source, and drive circuit includes identical main drive circuit and secondary driving Circuit, corresponding driving two light source led lamp bead of major-minor；

Described main drive circuit and secondary drive circuit include rectification circuit, filter circuit and the constant-current source chip being sequentially connected with, main Drive circuit and secondary drive circuit input are connected with 10V～15V AC/DC double-purpose electric source after connecting.

2. LED railway signal light source as claimed in claim 1, it is characterised in that: described constant-current source chip uses TPS92512 Integrated circuit.

3. LED railway signal light source as claimed in claim 1, it is characterised in that: described rectification circuit uses bridge-type filtered electrical Road.

4. LED railway signal light source as claimed in claim 1, it is characterised in that: described filter circuit uses and is connected to input Electric capacity between end is constituted.

5. LED railway signal light source as claimed in claim 1, it is characterised in that: described main drive circuit and secondary drive circuit Outfan is also associated with output electric current afterflow, the filter circuit being made up of inductance and diode.

6. the LED railway signal light source as described in claim 1-5 any one, it is characterised in that: said two LED lamp bead is adopted By aluminium base PCB independent wiring and welded and installed.

7. the LED railway signal light source as described in claim 1-5 any one, it is characterised in that: described drive circuit is independent Common PCB is used to install.

8. the LED railway signal light source as described in claim 1-5 any one, it is characterised in that: whole device is arranged on one In individual aluminum alloy casing, LED lamp bead passes through cover plate lamp hole to emission light.