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Led lighting circuit, led illuminating device, and socket for led illuminating unit

A LED drive and circuit technology, applied in lighting devices, lamp circuit layout, circuits, etc., can solve the problems of unstable output of electronic transformers, LED lighting off or repeated flickering, etc.

Inactive Publication Date: 2013-07-03
CITIZEN WATCH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When connecting an LED lighting device to this electronic transformer (for example, connecting an LED lighting device to Figure 8 When the secondary side n2) of the medium-high frequency step-down transformer 12 is used, the output of the electronic transformer becomes unstable due to insufficient load, and malfunctions such as LED lighting off or repeated flickering occur.

Method used

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  • Led lighting circuit, led illuminating device, and socket for led illuminating unit
  • Led lighting circuit, led illuminating device, and socket for led illuminating unit
  • Led lighting circuit, led illuminating device, and socket for led illuminating unit

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Embodiment Construction

[0043] The LED lighting circuit, the LED lighting device, and the socket for the LED lighting part will be described with reference to the following drawings. However, it should be noted that the technical scope of the present invention is not limited to these embodiments, but also extends to inventions described in the scope of claims and equivalent inventions thereof. In addition, in the description of the drawings, the same reference numerals are attached to the same or corresponding elements, and overlapping descriptions are omitted.

[0044] figure 1 It is a block schematic configuration diagram of the LED lighting circuit 100 .

[0045] The LED lighting circuit 100 is composed of a rectifier circuit 101, a terminal voltage control unit 102, a reverse current prevention unit 103, an LED drive unit 104, and the like. in addition, figure 1 In , three LEDs 105 are shown together with the LED lighting circuit 100 . The rectifier circuit 101 has terminals 101 a and 101 b...

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PUM

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Abstract

The purpose of the present invention is to provide an LED lighting circuit, which can normally light an LED even if an alternating current power supply is an electronic transformer, an LED illuminating device, and a socket for an LED illuminating unit. Disclosed is an LED lighting circuit that has: a rectifying circuit, which has alternating current output inputted thereto from an alternating current power supply; an LED drive unit, which drives the LED by having rectifying output inputted thereto from the rectifying circuit; a reverse current preventing unit, which is provided between the rectifying circuit and the LED drive unit; and a terminal voltage control unit, which reduces the output terminal voltage of the rectifying circuit in the case where the alternating current output from the alternating current power supply is unstable or stopped. Also provided are an LED illuminating device, and a socket for an LED illuminating unit.

Description

technical field [0001] The present invention relates to an LED lighting circuit capable of normally lighting LEDs even with power obtained from an inverter circuit, an LED lighting device, and a socket for an LED lighting unit. Background technique [0002] Halogen lamps that light up at a rated voltage of 12V are gaining popularity. The power supply for the halogen lamp is often produced by stepping down a commercial power supply voltage. Due to the large size of the step-down transformer, there is a device that uses an inverter circuit to convert commercial AC power to high frequency and steps down the voltage with a high frequency transformer (this device is called an electronic transformer below). The inverter circuit of the electronic transformer has a self-excited oscillation mode and an externally excited oscillation mode (for example, the patent document 1 Figure 6 ). [0003] Figure 12 It is a diagram showing a lighting device including a self-oscillating inver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/00H05B37/02H05B44/00
CPCF21K9/23F21Y2115/10H02M7/06H02M1/32H02M7/5383H05B45/37Y02B20/30
Inventor 深泽尚秋山贵
Owner CITIZEN WATCH CO LTD
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