Light-emitting diode (LED) unit and constant-current unit voltage-stabilizing light-emitting diode (LED) traffic signal lamp

A technology of traffic lights and voltage stabilization, applied in traffic control systems, traffic control systems of road vehicles, road lights, etc., can solve problems such as easy failures, wrong judgments of controller detection circuits, etc., and achieve convenient maintenance and simple installation Effect

Active Publication Date: 2011-09-28
张志军 +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The present invention provides an LED unit and a constant-current unit voltage-stabilized LED traffic signal lamp comprising a plurality of LED units, which solves the error judgment of the controller detection circuit caused by the exces

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  • Light-emitting diode (LED) unit and constant-current unit voltage-stabilizing light-emitting diode (LED) traffic signal lamp
  • Light-emitting diode (LED) unit and constant-current unit voltage-stabilizing light-emitting diode (LED) traffic signal lamp
  • Light-emitting diode (LED) unit and constant-current unit voltage-stabilizing light-emitting diode (LED) traffic signal lamp

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Embodiment Construction

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0037] Such as figure 1 , figure 2 In the LED unit circuit shown, an LED light-emitting diode is used as a working unit, and its working voltage is stabilized by a voltage stabilizing circuit at its two ends. The voltage stabilized by the voltage stabilizing circuit is close to the working voltage of the light-emitting diode. The so-called proximity can be slightly Greater than, equal to or slightly less than, subject to the normal operation of the LED.

[0038] As an embodiment, a current-limiting resistor is connected in series in the LED light-emitting diode circuit, and the current-limiting resistor acts as a voltage divider. Or slightly less than) its operating voltage, the unit circuit constituted as figur...

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Abstract

The invention provides a light-emitting diode (LED) unit. In the LED unit, the light-emitting diode is connected in parallel with at least one diode of which the forward voltage drop is close to the working voltage of the light-emitting diode; and based on the principle of stabilizing the voltage with the forward voltage drop of the positive-negative (PN) junction of the diode, the working voltage of the light-emitting diode is stabilized. The invention also provides a constant-current unit voltage-stabilizing light-emitting diode (LED) traffic signal lamp. The traffic signal lamp comprises a current-rectifying bridge and at least one branch circuit which is formed by connecting the serially-connected LED unit and a constant-current control module in series. The voltage drop is realized by a constant-current unit voltage-stabilizing circuit and the voltage reducing power of the unit is very small, so that the whole control system does not use any power assembly and any heating element and the circuit can work stably and reliably.

Description

technical field [0001] The invention relates to an LED unit and a constant-current unit voltage-stabilized LED traffic signal lamp comprising a plurality of LED units. Background technique [0002] The abbreviation of light-emitting diode is LED, which is the abbreviation of English Light Emitting Diode. It is a diode made of compounds of gallium (Ga), arsenic (AS), and phosphorus (P), that is, on the PN junction, between holes and electrons. When jumping, most of the energy is emitted in the form of light. The color of the light depends on the manufacturing material of the light-emitting diode, and there are many colors such as red, yellow, and green. [0003] With the development of my country's transportation industry, various types of traffic signal LED display devices have been used in large quantities. It has replaced the traditional incandescent traffic signal lights and achieved the green goals of energy saving and environmental protection. At the same time, low co...

Claims

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Application Information

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IPC IPC(8): H05B37/00G08G1/095F21V23/00F21W111/02F21Y101/02F21Y115/10
Inventor 张志军周永准白舸
Owner 张志军
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