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LED light fixtures for replacing fluorescent lamps

A technology of LED lamp device and circuit configuration, which is applied in the use of semiconductor lamps and electrical components, etc., and can solve the problems of visible light flickering of lamps and user troubles, etc.

Active Publication Date: 2022-06-28
SILICON HILL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] On some commercially available electronic ballasts, the output voltage of the retrofit lamp's ballast peaks in a pulsed pattern within seconds after the lamp is turned off, causing the lamp to produce visible light flicker
These flickering lights are a nuisance to the user

Method used

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  • LED light fixtures for replacing fluorescent lamps
  • LED light fixtures for replacing fluorescent lamps

Examples

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Embodiment Construction

[0030] figure 1 An embodiment of an LED lamp arrangement 1 according to the invention is shown. The LED lamp device 1 is configured to replace a fluorescent lamp such as a fluorescent tube.

[0031] The LED light device 1 may comprise an LED circuit 8 comprising a plurality of LED groups 9, 10, 11, 12, 13 that emit light when current flows through the LEDs. In the embodiment shown, the LED circuit 8 comprises five groups of LEDs 9 , 10 , 11 , 12 , 13 via connecting diodes. The number of groups may be other than five, eg the LED light device 1 may comprise two, three or other numbers of LED groups, as described in WO 2016 / 151125 A9, which is incorporated herein by reference. Each LED group may include multiple LEDs connected in series or in parallel or a combination of both, and may also have one or more groups comprising a single LED. In one embodiment, the LED string includes a plurality (eg, 10-20) of LEDs connected in series.

[0032] The LED lamp device 1 may include r...

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Abstract

An LED lamp device (1) adapted to be powered by a magnetic ballast or an electronic ballast for replacing a fluorescent lamp. The LED lamp device has a rectifier circuit (4, 5) and an LED circuit (8) having a plurality of LED groups (9, 10, 11 switchable between at least a first circuit configuration and a second circuit configuration) , 12, 13). The LED light device also has an auxiliary circuit (31) defining a conductive path connected in parallel with the plurality of LED groups in the second circuit configuration. The LED light device (1) is configured to bypass the LED group and charge the capacitor (39) in the conductive path when the LED light device 1 receives a series of pulse trains, and during the time interval between the series of pulse trains The capacitor (39) is discharged.

Description

technical field [0001] The present invention relates to an LED lamp device (eg, retrofit LED lamp) suitable for replacing fluorescent lamps, powered by a ballast, which may be a magnetic ballast or an electronic ballast. Background technique [0002] Fluorescent lamps have been around for many years. This form of lighting was originally an efficient alternative to incandescent bulbs, but fluorescent lamps have recently been replaced by LED lighting in terms of efficiency and power consumption, among others listed below. [0003] Fluorescent lamps typically consist of a tube filled with an inert gas and a small amount of mercury, closed at both ends with double-pin end caps. The end cap contains a glow wire that preheats the gas in the tube and vaporizes the mercury to aid in the ignition of the fluorescent lamp. After the user turns on the main switch (such as a wall switch or a rope switch in the ceiling), the fluorescent light is ignited, and the heat generated by the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/3578H05B45/44
CPCH05B45/44
Inventor S·罗伊G·N·纳哈
Owner SILICON HILL