A drive circuit for arrow-shaped traffic lights

A technology of traffic signal lights and drive circuits, which is applied to the layout of electric light circuits, electric light sources, lighting devices, etc., can solve the problems of 4 LEDs not lighting up, and achieve the effects of avoiding traffic jams, avoiding shocks, and prolonging service life

Active Publication Date: 2016-05-04
WUXI CITY CHONGAN DISTRICT TECH ENTREPRENEURSHIP SERVICE CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: to provide a driving circuit for arrow-shaped traffic lights, by changing the circuit connection mode of the display unit, it is solved that when one LED is damaged, the four LEDs connected in series will not light up. The problem

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  • A drive circuit for arrow-shaped traffic lights

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, structure and working process of the present invention will be further described.

[0020] Such as figure 1 As shown, a drive circuit for an arrow-shaped traffic signal lamp includes a power supply unit, a rectification unit, a filter unit, a voltage stabilization unit, and a display unit connected in sequence, the power supply unit includes a transformer T1, and the rectification unit includes diodes D1 and D2 , D3, D4 composed of a rectifier bridge, the filter unit includes a Π-shaped filter circuit, the Π-shaped filter circuit includes capacitors C1, C4, inductor L1, resistors R1, R5, and the voltage stabilizing circuit includes polar capacitors C2, A voltage stabilizing circuit composed of C3 and non-polar capacitor C5 connected in parallel, the display unit includes at least one light emitting unit, each light emitting unit includes first to ninth light emitting branches and a voltage stabilizing branch, the voltage s...

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Abstract

The invention discloses a driving circuit of arrow-head-shaped traffic lights. The driving circuit of the arrow-head-shaped traffic lights comprises a power supply unit, a rectification unit, a filtering unit, a voltage stabilizing unit and a displaying unit, wherein the power supply unit, the rectification unit, the filtering unit, the voltage stabilizing unit and the displaying unit are connected in sequence. By changing the circuit connecting method of the displaying unit, when one LED lamp is damaged, the work of other LED lamps on branches connected in series will not be affected, the problems of traffic jam caused by failures in the use process of the traffic lights, and the like are avoided, and meanwhile repairing cost is saved. The voltage stabilizing unit is of a structure with various capacitors connected in parallel, the power supply voltage of the displaying unit is more stable, the impact to the LED lamps caused by unstable voltage is avoided, and the service life of the LED lamps is prolonged.

Description

technical field [0001] The invention belongs to the technical field of application of traffic lights, and in particular relates to a driving circuit of an arrow-shaped traffic signal light. Background technique [0002] LED traffic lights are composed of multiple LED illuminants, so the design of the pattern can be adjusted by adjusting the layout of the LEDs to form a variety of patterns, and various colors can be made into one, so that The same light body space can give more traffic information, configure more traffic schemes, and can also form dynamic pattern signals through the switching of LEDs in different parts of the pattern, so that the rigid traffic signals become humanized and vivid. It is difficult to achieve with traditional light sources. [0003] When designing the LED drive circuit, we must first consider the following points: [0004] 1. The drive power supply should be rectified and filtered with 220V AC voltage, and energy should be saved as much as poss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 顾肖红丁演
Owner WUXI CITY CHONGAN DISTRICT TECH ENTREPRENEURSHIP SERVICE CENT
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