CN2071295U - Light emitting diode array traffic signal lights - Google Patents

Abstract

The utility model relates to a traffic light, which comprises a light source, a housing, a transparent shell, a power supply and control devices. The utility model is characterized in that the light source is an array area light source which is formed by that light emitting diodes (LEDs) are uniformly welded on a printed circuit; a power supply control device is a drive switch control device which is composed of an integrated circuit and transistors; a switch control device is a waveform generator set by a contactless switch which is composed of transistors, etc., a light-control switch or other devices. The utility model is widely used in various traffic signal lamps, such as highways, railways, fairways, motor vehicles, and non-motor vehicle.

Description

Light emitting diode array traffic signal lights

The utility model relates to the making of traffic lights.

Existing traffic lights of all kinds all are light source with the incandescent lamp, constitute the traffic lights of color such as red, green, yellow with different optical filtering shell, and its luminous efficiency is low, and the energy consumption height has higher requirements to power supply; The service life of incandescent lamp is short, can only reach thousands of hours, and the maintain and replace workload is big; Also owing to incandescent lamp signal lamp volume weighs greatly, it is many to consume material, and existing light emitting diode (LED) is used for traffic lights as indicator lamp but yet there are no.

The purpose of this utility model is that a kind of low energy consumption is provided, long service life, simple in structure, cost is low, and with traffic lights simple, the reliable source of power control device.

Technical solution of the present utility model is: the light emitting diode made from materials such as gallium arsenide phosphide, gallium phosphides evenly is welded on composition array surface light source on the printed circuit board (PCB), be encapsulated in and promptly become traffic lights in the optical filtering shell, the power control of traffic lights is that the routine that integrated circuit and transistor constitute drives and switch controlling device, can add common contact switch again and do emergent control.This power control comprises the noncontacting switch that the transistor amplification driving circuit constitutes, and the control device of drive circuit is a light-operated switch, and the waveform signal generator of logic switch or other setting, LED also can be that the end adds packaged die.Consider and use LED of all kinds, therefore making the traffic lights light source with LED just needn't adopt color optical filtering shell, only needs to use the normal transparent material, red eye can be used red LED, green light available green LED, the amber light yellow led, also available red LED and green LED light mix.Therefore, the LED that arranges 2～3 kinds of colors between red, yellow, green coston light can replace promptly evenly by signal lamp forms the polychrome traffic lights.Utilize led array to form the practical technique scheme that various character shape also are the LED traffic lights, as constituting the direction directional arrow with 4 triangular arraies, 1 above rectangular array constitutes the arrow dactylostyle.Can also constitute polyhedron body light sources with 2 above area source led boards, also planar printed circuit board can be made protruding, concave arc shape plate and the constituting body light source.

Control circuit and supply unit are made of elements such as integrated circuit and transistors, its effect is to require the control signal lamp according to traffic rules, for example turn colors, dodge and to go out etc., produce waveform control signal to trigger amplification driving circuit by integrated circuit or single-chip microcomputer etc., utilize this kind control device to have reliability height, simple in structure, control function increase, as light-operated switch is set, when the same day, the sky bias light was very strong, light-operated switch provides signal and improves supply voltage, signal lamp brightness improves, otherwise night, bias light weakened then; Also can be when daytime, light-operated switch provides signal work signal lamp, work at night, and the former can be used for intersection traffic lights or automobile tail light above-mentioned light-operated switch, and the latter can be used for navigation light.Power supply can be used battery, photocell, and civil power when using mains-supplied, can charge a battery simultaneously.Protecting sheathing is similar to existing signal lamp shell, but its volume weight is all less than existing signal lamp.

LED luminous efficiency height, photoelectric efficiency reaches 50%, and with about 150 LED power consumption 10W, its luminous intensity is equivalent to the 60W incandescent lamp, and energy consumption is little, the efficient height.The LED driving voltage is low, and alternating current-direct current all can be powered, power consumption is little, but also low-voltage power supply of signal lamp when electric main has a power failure, is powered by standby battery.The LED reaction speed is fast, and driving voltage is low, so the control circuit of its signal lamp is can more existing control circuit simple in structure, function is many, have the relay control mode that incandescent lamp adopts now and save, the cost of control device reduces, and reach more than 30,000 hours the service life of LED, and crash rate reaches 10 ^-7, its life-span is tens times of incandescent lamp, has significantly reduced maintenance load.In addition, when closing the control power source drive device,, improved the service life and the reliability of switch greatly because the operating current of external control switch is very little by outer control.Can be widely used in various traffic lights, as highway, railway, navigation channel and even motor vehicle, bicycle.

The utility model is described in further detail below in conjunction with accompanying drawing with by embodiment.

Fig. 1 is the structural representation of traffic lights, and Fig. 2,3 is the array structure schematic diagram of traffic lights, and Fig. 4 is a Signal on Highway Cross control circuit block diagram, and Fig. 5 is Fig. 4 oscillogram, and Fig. 6 is the supply unit block diagram.Fig. 7 is control circuit figure.6 is the supply unit block diagram.

Shown in Figure 1 can be the embodiment of Signal on Highway Cross, railway, navigation channel signal lamp and light for vehicle; equal tabula rasa 1 employing transparent material such as glass, plastics, lucite etc.; inboard sanding or carry out astigmatism processing and make the LED printing opacity evenly soft; containment vessel 2 is with metal skin or plastics forming; LED3 is welded on the printed circuit board (PCB), and control electric wire 5 is connected to control assembly.Exploitations etc. directly control assembly should be installed on operating desk or the console.As adopt the LED tube core, then should adopt two-sided hole shape circuit board, tube core spot welding.

Fig. 2,3 has provided the array structure of traffic lights, and LED can be homochromy even solid matter, can also be the even solid matter of dual-colored LED, and as red LED 6 and 77 rows of green LED, red LED is connected on one group of power supply control and does, and is green same.Arranged in series again after preferably per two the LED parallel connections of above-mentioned arrangement architecture.To with the 12V power supply, the 5 groups of gallium arsenide phosphide LED that go here and there are a group greatly.With different supply voltages, the LED number of the LED of different materials serial connection is different, should calculate the series connection number of elements according to the LED material, and then connect on the row power supply.The monochrome signal lamp is used for general traffic indication, as being used as navigation channel, signal lamps such as runway.For vehicle, especially the direction taillight of motor vehicles also can be used the direction arrow of nine sections arrangement architectures compositions of Fig. 3 as the auxiliary indicator of intersection, separate with light-proof material between each section, when the aeog section was bright, expression was advanced, when dfoH is bright, expression is turned right, and represents when cgoe is bright to retreat, and represents when dHof is bright to turn left, when bright the or cehgf of O is bright, expression is brought to a halt or is stopped, and its duty determines that according to the motor vehicles traffic rules each bright section combination is controlled with the logic toggle switch.The whole taillight system that just may replace the current mobility car.Also available small size array constitutes the credit lamp and replaces present motor vehicle or bicycle taillight.

Fig. 6 is the power supply architecture block diagram.When using mains supply, after the step-down one group through voltage-controlled rear drive LED, another group is to storage battery charging, power supply guarantees the signal lamp operate as normal to storage battery to LED during the bright electricity of civil power.

Fig. 4 is a signal lamp control circuit block diagram, and it is made up of distributor and driver, and Fig. 5 is intersection traffic lights converter control circuit and distributes waveform, flashes several before extinguishing according to the traffic rules green light, and amber light is lighted then, and amber light extinguishes the back red light and lights.Red light extinguishes, and green light is lighted immediately, so goes round and begins again.T1, t2, t3, t4 be respectively red light, green light, flash and time of the bright lamp of amber light, and its length can be adjusted according to traffic rules and crossing traffic situation.The distributor waveform is sent into driver A, B, controls the power supply of LEDA and LEDB array after amplifying respectively.All control with noncontacting switch.Control circuit is by CMOS gate circuit IC1, and IC2 and trigger IC3 constitute, and generation drive waveforms A, B, K1, K2 are the external control switch.Fig. 7 provides control circuit embodiment.

Distributor synchronous signal output can be delivered to the language alarm system, and the language alarm system is made of the language integrated package, and during hot, green light conversion, the language alarm system can spell out the signal conversion, reminds Pedestrians and vehicles to note, to help to safeguard traffic order.Control circuit has the external control switch, so that conversion traffic lights in case of emergency.

For the signal lamp of arrow indication, can by the external control switch, control driver, the conversion direction indication without distributor.

When an external control switch light-operated switch arranged side by side, by photodiode, amplifying circuit constitutes, and automatic control function is then arranged, as when being used for vehicle taillight: strong illumination can be lighted taillight automatically after driving at night was subjected to car, reminded the driving vehicle behind the car.When being used for navigation light, the structure of light-operated switch and last similar, but state of a control is opposite.

Claims (5)

1, a kind of traffic lights, comprise light source, shell, printing opacity shell, power supply and control device, it is characterized in that light source is that light emitting diode (LED) evenly is welded on composition array surface light source on the printed circuit board (PCB), power control is the driving switch control device that integrated circuit and transistor constitute, its switch controlling device is the noncontacting switch that transistor etc. constitutes, the waveform generator of light-operated switch or other setting.

2, by the described traffic lights of claim 1, it is characterized in that described area source is that 4 triangular arraies constitute direction arrow, 1 above rectangular array constitutes the arrow dactylostyle.

3, by the described traffic lights of claim 1, it is characterized in that light source can constitute polyhedron body light source with the multi-disc area source, also planar printed circuit board can be made protruding, concave arc is planar.

4, by the described traffic lights of claim 1, it is characterized in that described area source be 2 to 3 kinds of colors LED evenly between row constitute.

5,, it is characterized in that described LED homogeneous texture takes behind two parallel connection LEDs the structure of arranged in series again by the described traffic lights of claim 1.

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