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External Aircraft Lighting Units and Methods for Disabling Light Output from External Aircraft Lighting Units

A technology for aircraft and light output, which is applied in the field of external aircraft lighting and external aircraft lighting units, and can solve the problems of LED aging, LED light intensity, insufficient output light intensity of external aircraft lighting units, and deterioration of output light intensity.

Active Publication Date: 2021-01-22
古德里奇照明系统有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although LEDs are efficient and long-lasting light sources, their output light intensity degrades over time, also known as LED aging
This degradation of LED light intensity results in insufficient output light intensity of the considered exterior aircraft light units

Method used

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  • External Aircraft Lighting Units and Methods for Disabling Light Output from External Aircraft Lighting Units
  • External Aircraft Lighting Units and Methods for Disabling Light Output from External Aircraft Lighting Units
  • External Aircraft Lighting Units and Methods for Disabling Light Output from External Aircraft Lighting Units

Examples

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Embodiment Construction

[0039] figure 1 An aircraft 100 according to an exemplary embodiment of the present invention is shown in top view. figure 1 The aircraft 100 is a large commercial aircraft, such as a passenger or cargo aircraft. Aircraft 100 has an aircraft onboard power source 40 . Onboard power source 40 is an electrical power supply network that provides electrical power to various devices in aircraft 100 . For purposes of illustration, aircraft onboard power source 40 is depicted as a set of power lines running along the fuselage of aircraft 100 and along the wings of aircraft 100 . exist figure 1 In the exemplary embodiment of the aircraft onboard power source 40 is a 115 V / 400 Hz power distribution network.

[0040] Aircraft 100 has a plurality of exterior aircraft light units according to an exemplary embodiment of the present invention. For illustrative purposes, figure 1 Five exterior aircraft light units are depicted in . Specifically, the aircraft 100 has an upper beacon lig...

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PUM

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Abstract

An external aircraft light unit (2) comprising: a power input terminal (4), which can be coupled to an aircraft onboard power supply (40); at least one LED (12), the at least one LED (12) coupled to said power input for receiving power from said aircraft on-board power source and configured to emit a light output; an optical sensor (16) arranged to sense an intensity detection portion (28) for measuring the light output and configured to output a detection signal indicative of an intensity level of the light output; an end-of-life detector (30) coupled to the the optical sensor for receiving the detection signal and configured to determine an end-of-life condition; and a fuse circuit (18) coupled to the end-of-life detector; wherein the At least one LED and said fuse circuit are arranged on an LED circuit board (10), and wherein said fuse circuit is configured to communicate said end-of-life condition to said fuse circuit when said end-of-life detector communicates said end-of-life condition to said fuse circuit Irreversibly disables the LED circuit board.

Description

[0001] field of invention [0002] The invention belongs to the field of exterior aircraft lighting. In particular, the invention is in the field of exterior aircraft lighting units relying on LEDs as light sources and monitoring the aging behavior of these LEDs. [0003] technical background [0004] Almost all aircraft are equipped with external light units. In particular, exterior aircraft light units are provided for various purposes. In one aspect, external aircraft light units are provided for passive visibility, such as navigation light units, white flashing anti-collision light units, red flashing beacon light units, and the like. On the other hand, external aircraft light units are provided for active visibility, such as aircraft landing, takeoff, taxi and runway corner light units or helicopter search light units. In addition, various other lighting functions may be implemented. Other light units include engine and / or wing scan light units, cargo light units, mark...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/58H05B44/00
CPCH05B45/58B64D47/02F21V5/08B64D2203/00F21W2107/30B64D47/06H05B47/28H05B45/14
Inventor F.克莱因A.黑斯林-冯海门达尔R.特林舍克
Owner 古德里奇照明系统有限责任公司
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