Marker light device for locomotive

A technology for marking lights and locomotives, applied in signal devices, vehicle parts, transportation and packaging, etc., can solve the problems of short life and low efficiency of locomotive marking lights, and achieve the effect of long life and high efficiency

Inactive Publication Date: 2010-11-03
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a locomotive marker light device with high efficiency and long life using LED as the light source

Method used

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  • Marker light device for locomotive
  • Marker light device for locomotive
  • Marker light device for locomotive

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Experimental program
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Embodiment Construction

[0019] The present invention adopts LED to replace the traditional locomotive sign light source, and at the same time, under the premise of the power supply of the locomotive, the constant current control circuit 200 is used to provide the LED with a relatively low constant current required so that the locomotive sign light has high luminous efficiency, long life, And safe, stable and reliable.

[0020] see figure 1 and figure 2 , figure 1 It is a functional block diagram of the locomotive marking lamp device of the present invention. The locomotive sign light device provided by the present invention mainly includes a locomotive power supply unit 100 for supplying power to the locomotive sign light, an LED load 300 used as a light source for the sign light, and an LED load connected between the locomotive power supply unit 100 and the LED load 300. 300 provides a constant current control circuit 200 for constant current. The constant current control circuit 200 includes a ...

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PUM

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Abstract

The invention relates to a marker light device for a locomotive, comprising a locomotive power supply unit, an LED load and a constant current control circuit, wherein the LED load is used as light source of the marker light, the constant current control circuit which is connected between the locomotive power supply unit and the LED load is used for providing the LED load with constant current, the constant current control circuit comprises a constant current unit and an energy storage follow current circuit, wherein the energy storage follow current circuit which is connected with the constant current unit is used for providing the LED load with constant and stable current. The invention adopts the constant current control circuit and LED load to enable the marker light to have the advantages of high efficiency, long service life, stable and fast start-up and overcurrent protection.

Description

technical field [0001] The invention relates to a lamp, in particular to a locomotive marking lamp device which adopts a constant current to drive LEDs. Background technique [0002] The locomotive sign light is a combination of the indicator lights at the head and tail of the locomotive or EMU, which mainly displays the running route and direction of the locomotive through red light. Nowadays, the speed of locomotives is getting faster and faster, and the requirements of locomotives for marking lights showing the running route and direction are getting higher and higher. National economic lifeline and personal safety issues, so the locomotive marker lights are particularly important. [0003] Locomotive sign lights require high brightness, high efficiency, stable and rapid start-up, and long life. However, the current locomotive sign lights usually use ordinary tungsten-halogen light source lamps, and the signs are indicated through a red transparent cover. The luminous e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q1/26
Inventor 周明杰孙占民
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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