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retrofit lamp

A technology for retrofitting lamps and rectifiers, which is applied to the layout of lamp circuits, the use of semiconductor lamps, and electrical components. It can solve problems such as ballast failure and ballast damage, and achieve reliable operation.

Active Publication Date: 2018-03-06
LEDVANCE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the case to date, when such known retrofit lamps were operated, damage sometimes occurred on different ballasts, and even the ballasts failed

Method used

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Examples

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Embodiment Construction

[0022] figure 1 It is a schematic illustration of an exemplary embodiment of a retrofit lamp 10 according to the invention, which is coupled to a conventional ballast 12 of a lighting device. The retrofit lamp 10 preferably has a T5 or T8 housing. The ballast 12 has a first input interface E V1 and the second input interface E V2 The input terminal, which is used to communicate with the grid voltage U N connect. Grid voltage U N is usually between 100V and 240V and has a 50H Z and 60H Z frequency between. The KVG choke coil L1 is set in the traditional ballast 12 to limit the current, and the choke coil is connected to the input interface E V1 and the first connecting pole A1. compensation capacitor C C Connected to the input interface E V1 and E V2 In between, this compensating capacitor is used to compensate the inductive element introduced into this system by the KVG choke coil L1 and thus to compensate the reactive power of the inductance. A short-circuit devi...

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Abstract

A retrofit lamp with at least one series circuit of a plurality of LEDs, comprising a circuit arrangement having a first connection with a first and a second connection pole; a second connection with a third and a fourth connection pole; an input A rectifier whose terminal is connected to the first interface, the output end of the rectifier includes first and second rectifier output interfaces; at least one series circuit of a plurality of LEDs is connected between the first and second rectifier output interfaces; wherein the breakdown device is connected to Between the third and fourth connecting poles, the breakdown means have the following properties: the breakdown means does not conduct until reaching a first predeterminable threshold value of the voltage dropped by the breakdown means during operation; turning on the breakdown device at a threshold; keeping the breakdown device on as long as the current supplied to the breakdown device exceeds a predeterminable second threshold; and not conducting the breakdown device when the current is below a predeterminable second threshold; and In the conductive state, the breakdown device has a flow voltage below a predeterminable third threshold value.

Description

technical field [0001] The invention relates to a retrofit lamp having at least one series circuit comprising a plurality of LEDs, said retrofit lamp comprising a circuit arrangement having: A first interface; a second interface with third and fourth connection poles; a rectifier, the input end of the rectifier is connected to the first interface, and the output end of the rectifier includes the first and second rectifier output interfaces; wherein there is at least one series connection Circuitry is coupled between the first and second rectifier output interfaces. Background technique [0002] A so-called retrofit lamp is known as an LED replacement for fluorescent lamps, especially in the form of rods, for example "T5" or "T8", with a length of 59, 120 or 150 cm. Standards for retrofit lamps screwed into sockets from both sides as an alternative to fluorescent lamps are included in the IEC 62776 standard. Very high requirements are specified here especially with regard t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02H05B44/00
CPCY02B20/30H05B45/3578
Inventor 路德维希·赖泽尔
Owner LEDVANCE GMBH
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