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Dimming device

A technology of a dimming device and a switch part, which is applied to lighting devices, light sources, electric light sources, etc., can solve problems such as difficult control

Active Publication Date: 2016-11-09
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to control the first lighting load to exhibit the same variation in light output as incandescent lamps

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0026] The dimming device 10 of this embodiment will be described in detail below with reference to the drawings.

[0027] The dimming device 10 is, for example, a dimmer. The dimmer is configured to be mounted to a mounting bracket for an embedded wiring device.

[0028] Such as figure 1 As shown, the dimming device 10 includes: a pair of terminals 1 and 2; a switch part 3 connected between the pair of terminals 1 and 2; and a driving part 4 configured to drive the switch part 3 to turn on and off . The dimming device 10 further includes: a control circuit 5 configured to control the driving section 4; a rectifying section 6 configured to full-wave rectify the AC voltage (supplied from the external AC power supply 20); and a power supply section 7 , which is configured to supply power to the driving section 4 and the control circuit 5 .

[0029] The rectifying section 6 is electrically connected between the pair of terminals 1 and 2 . A series circuit of an AC power sour...

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PUM

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Abstract

Provided is a dimming device capable of changing the light output from an LED lighting device equipped with a capacitor, similarly to when changing the light output from an incandescent light bulb. A determination unit (9) determines if a lighting load (21) is from either of an LED lighting device and an incandescent light bulb, based on the voltage from a rectification unit (6) during an interval (T1) from when an alternating current voltage is applied to the rectification unit (6) until a predetermined time period elapses. A control circuit (5) controls a drive unit (4) in such a manner that, for a first direct current voltage (V1) value other than the minimum value and maximum value set by a setting unit (8), the conduction angle in a switching unit (3) when the lighting load (21) is determined to be the LED lighting device by the determination unit (9) is smaller compared to the conduction angle when the lighting load (21) is determined to be the incandescent light bulb by the determination unit (9).

Description

technical field [0001] The invention relates to a dimming device configured to adjust the light output of a lighting load. Background technique [0002] Conventionally, there is known a lighting system including a lighting device (lighting load) and a dimming device for adjusting the light output of the lighting load (for example, see Japanese Patent Application Laid-Open No. 2010-80238, hereinafter referred to as "Document 1") . [0003] The dimming device in the lighting system 1 described in Document 1 includes a field effect transistor (FET) and a dimming level setting section for setting an ON period of the FET. The dimming device further includes: a zero-crossing detection section for detecting a zero-crossing of an AC voltage of an AC (alternating current) power supply; a current detection section for detecting an output current to a lighting load; and a control section for controlling the FET. The control unit includes a waveform measurement unit for measuring a wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02H05B44/00
CPCH05B45/37Y02B20/30H05B45/10H05B39/041
Inventor 末广善文林雅则后藤洁
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD