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A kind of led light tube

A technology of LED lamps and lamps, which is applied to the layout of electric lamp circuits, the use of semiconductor lamps, lighting and heating equipment, etc. It can solve the problem that the drive circuit cannot be used with ballasts, and achieve the effect of avoiding interference

Active Publication Date: 2017-06-06
CHENHUI GUANGBAO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a LED lamp tube power drive circuit to solve the problem that the existing drive circuit compatible with commercial power and ballasts cannot be applied to all types of ballasts

Method used

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  • A kind of led light tube
  • A kind of led light tube
  • A kind of led light tube

Examples

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Embodiment Construction

[0032] like figure 1 As shown, an LED drive circuit includes a high-frequency power drive module, a low-frequency power drive module and a switch circuit for switching them. Products for sale, such as NXP's SSL2109, the switching circuit can be composed of ordinary switching components. When the power supply is used, the high-frequency power supply is used to drive the module, and the drive module is connected to the corresponding power supply mainly through switching circuits.

[0033] like image 3 As shown, an LED lamp tube containing the LED drive circuit includes a PC tube 10, a glass tube 11, a light bar 1 inside the tube, and lamp caps at both ends of the tube, 6, 7, including a card slot inside the PC tube 10, The LED light bar 1 is installed in the PC tube through the slot.

[0034] The lamp caps at both ends are respectively equipped with a low-frequency power drive module 2 and a high-frequency power drive module 3, and the two lamp pins 4 on the right end are re...

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Abstract

The invention discloses an LED lamp tube, which comprises an LED lamp tube power drive circuit. The LED lamp tube power drive circuit includes a high-frequency power drive module, a low-frequency power drive module and a switch circuit for switching the two. The invention utilizes a switch circuit to switch the low-frequency power drive module and the high-frequency power drive module, so that the high-frequency power drive module can be applied to all electronic ballasts, and the interference of other circuits on the drive circuit can be avoided.

Description

technical field [0001] The invention relates to a power drive circuit, in particular to an LED lamp tube power drive circuit. Background technique [0002] Fluorescent lamps are the most commonly used lighting tools in offices and residences. Traditional fluorescent lamps generally use fluorescent tubes. Due to the advantages of LED energy saving and environmental protection, as LED technology continues to mature, fluorescent tubes are gradually replaced by LED tubes. Since existing fluorescent lamps are often equipped with ballasts, the output current of which is AC, while LEDs need to be driven by DC, so it is necessary to modify the circuit of the existing lamps to realize the replacement. [0003] CN 203596948 U discloses an LED drive circuit compatible with electronic ballasts, including: a step-down and current-limiting circuit for stepping down and limiting the output of the electronic ballast to output alternating current; a high-frequency rectifier circuit for for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02F21K9/278F21V23/04F21Y115/10H05B44/00
CPCF21Y2103/10F21Y2115/10F21K9/272F21K9/278H05B45/40Y02B20/30H05B45/3725
Inventor 赵国松
Owner CHENHUI GUANGBAO TECH CO LTD
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