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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: 2014-10-29
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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Effect test

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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PUM

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Abstract

A retrofit lamp includes at least one series circuit having a multiplicity of LEDs having a circuit arrangement. The at least one series circuit including is coupled between a first rectifier output connection and a second rectifier output connection. A breakdown apparatus is coupled between a third connection terminal and a fourth connection terminal The breakdown apparatus may have the following properties: up to a first threshold value of the voltage drop across said breakdown apparatus during operation, the breakdown apparatus is nonconducting. If the first threshold value is exceeded, the breakdown apparatus becomes conducting. The breakdown apparatus remains conducting as long as current is supplied to it which is above a second threshold value. As soon as the current falls below the second threshold value, the breakdown apparatus becomes nonconducting again. In the conducting state, the breakdown apparatus has a forward voltage which is below a third threshold value.

Description

technical field [0001] The invention relates to 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; with a third and a fourth A second interface for connecting poles; a rectifier, the input of which is connected to the first interface, and the output of the rectifier includes first and second rectifier output interfaces; wherein a series circuit with at least one plurality of LEDs is connected between the first and the second Between the output interfaces of the two rectifiers. 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. As a substitute for fluorescent lamps, the standard for retrofit lamps screwed into the lamp socket from both sides is recorded in the standard of IEC62776. Very high requireme...

Claims

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Application Information

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IPC IPC(8): H05B37/02H05B44/00
CPCH05B33/0884Y02B20/383H05B33/0803Y02B20/30H05B45/3578
Inventor 路德维希·赖泽尔
Owner LEDVANCE GMBH
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